Conveyor Belt » cold resistant conveyor belt

Hot and cold conveyor belt curing adhesive joint head comparison of

admin — Thu, 04 Mar 2010 01:14:45 +0000

Hot and cold conveyor belts curing adhesive joint head comparison of
Conveyor environmental requirements: hot glued to the weather conditions not ask for much, if not the rain you can work around the clock. Humidity less than zero or greater than 80% can not be cold-stick operation. Thermal bonding site should be 380V (220V) power supply, cold-stick can do without.
Conveyor belt of raw materials: hot glue supply-side access is provided by the use of mortar and film, because a better understanding of their characters, easy to guarantee the quality of bonding. Neoprene adhesive used in commercially available cold syrup, its more stringent storage conditions, storage, failure will seriously affect the quality of bonding.
Bonding Quality: Thermal bonding of the Cold Resistant Conveyor Belt interface completely closed, less susceptible to water, wet, cold adhesive on the contrary, the cold wet sticky rubber conveyor belt does not apply and the material temperature requirements. Hot-bonding process is relatively complex and demanding for personnel; cold bonding process can be simple and short-term training posts

. Adhesive joints (hot and cold) Power up to 80-90%; mechanical joint strength only up to 60-65%.
Heat curing machine conveyor belt use: structure: electric heating plate 2, pressure plate 1, I-beam two, large bolts 2, water tanks 1, the voltage of 380V (220V) a set of auxiliary devices.Flame Resistant Conveyor Belt

Screw conveyor

admin — Wed, 03 Mar 2010 01:29:21 +0000

Screw conveyor
belt system features are: simple structure, cross-sectional size is small, good sealing, reliable manufacturing and low cost, easy to intermediate loading and unloading, belt conveyor direction is reverse, but also in both directions at the same time conveying the opposite . Transport process can be carried out on the material

Stirring, mixing, heating and cooling operations. Gate can be adjusted through the loading and unloading material flow. But not transport perishable, Viscous, easy caking and chunks of material. Easily broken during transportation of materials, spiral, and Trough easy to wear and tear. A larger unit power. Use

To maintain the trough of the seal and the screw with the proper gap between the trough. Sidewall Conveyor Belt
Vertical screw conveyor for short-distance vertical transportation. Flexible screw conveyor by a flexible shaft and the spiral blade composed of synthetic rubber, easy to bend, spot or process requirements in accordance with any arrangement, for space transportation. Conveyor blades are now pull and pull the whole loss,

Are pull-type thickness and specifications can be made into any size, not the entire pull-type production of non-standard screw.
Displacement angle of the direction of transportation of materials division is divided into horizontal screw conveyor screw conveyor and the two types of vertical screw conveyor is mainly used for a variety of powder, granular and small-block level and other loose materials transport and vertical lifting of the screw conveyor is not Cold Resistant Conveyor Belt

Suitable for transport perishable, Viscous, easy caking or high temperature, for fear pressure, have more specific corrosive material.
Screw conveyor generally conveyor body, mouth and drive out of material composed of three main parts; the helical screw conveyor blades have a physical spiral surface, belt conveyors screw spiral surface and leaf surface in three forms, of which the leaves spiral Surface application of relatively small, the main

Viscosity to be used for transmission of larger and compressibility of materials, such spiral hanging face, the completion of the extraction operation process, and completed both the mixing of materials, mixing and other functions.

Durable ore conveyor belt

admin — Tue, 23 Feb 2010 01:28:32 +0000

Durable ore conveyor belt
Liu Jinwen
(Design Institute of Rubber Industry, Qingdao Rubber Machinery experimental plant, Changle, Shandong Changle 262.4 thousand)
Abstract: The flat-type conveyor for general improvements, development and durable ore conveyor belt. Flat conveyor belt in the general coverage of glue added to pretreated polyester
Short fibers in the body is covered with a flat base layer to set a reasonable distance of the V-shaped rubber non-slip edges, which can effectively improve the life of conveyor belt when the conveyor ore. The system to do
Durable ore conveyor belt system do not need to re-plate vulcanizing machine hot plate, just the next hot-plate to install template vulcanization transition can be realized once the whole conveyor belt vulcanization.
Keywords: conveyor belt; non-slip edges; polyester staple fiber; vulcanization transition template; life
Key words: TQ336.2 Document: B Article ID :1000-890X (2005) 02-0092-03
Common conveyer belt used to transport materials in general, the normal situation
Service life of up to 8000 ~ 10000h; used for conveying ore
When, in the maintenance of good cases, only 5000 ~ 7000h.
Conveyor belt life is short and inefficient transportation constraints Enterprise Economy
Efficiency improvement of important factors. Common conveyer belt used to transport ore
When the main factors affecting their life is the ore of the wear and
Their own system for quality.
This is achieved through the ordinary flat-type conveyor belt structure, equipped with rubber
Side and production process improvements, development and durable ore conveyor belt.
1 Structure
Improve the conveyor belt structure is aimed at alleviating transport material on the conveyor
With the wear and improve transportation efficiency. Practical measures for improving
In the body is covered with a flat base layer to set a reasonable distance between V-shaped
Rubber non-slip edge, non-slip edge shape as shown in Figure 1, the relevant dimensions such as the
Shown in Table 1.
With a body structure improvements, through the use of evidence carried by conveyor belt
Materials are not sliding, thereby reducing the carriage of the wear material on the belt body, with body
Extend the service life of 10% ~ 15%. In addition, as V-shaped rubber Nylon Conveyor Belt
The existence of non-slip rubber edges, make the largest conveyor belt conveyor angle up to
35o, thereby enhancing the delivery height, reduced equipment footprint.
2 formula
2.1 The flat body is covered with a plastic base
Improve the body is covered with a flat base adhesive formulations focused on enhancing the adhesive
B / mmα / (o) R / mm e / mm r / mm t / mm h / mm φ / (o)
500.40601 million ~ 206,225 ~ 40 12 ~ 20 6 ~ 7
650.40801 million ~ 208,125 ~ 40 12 ~ 20 6 ~ 7
8003010010 ~ 2010025 ~ 40 12 ~ 20 6 ~ 7
Material tensile strength and wear resistance. Proven, in the rubber
By adding appropriate amount of the increased infiltration of polyester staple fiber can be pre -
Significantly increased the tensile strength of rubber and wear resistance. After several test
Testing to determine body is covered with a flat base formula for the plastic: SBR 50, BR
30, NR 20, active agent 8, plasticizers 25, reinforcing agent
40, polyester staple fiber 30, antioxidant 2, paraffin 1, sulfur
2.5, Accelerator NOBS 1.5. Vulcanizate performance (curing conditions
To 150 ℃ × 20min) is as follows: Shore A hardness of 61 degrees,
Tensile strength of 21MPa, pull off 600% elongation, Akron
WEAR 0.40cm3.
2.2 The non-slip rubber edge
An appropriate increase in non-slip rubber edges of the hardness, tensile strength and resistance to
Conveyor belt grinding performance in improving service life are very favorable. In rubber
By adding appropriate amount of the increased infiltration pretreatment of polyester staple fiber
The effect of rubber material to improve the performance significantly. After repeated testing to determine if anti -
Prism slip rubber formula for: SBR 70, NR 30, a high styrene tree
Fat 5, active agent 8, plasticizers 15, super-abrasion furnace black
30, filler 20, polyester staple fiber 36, Antioxidant BLE /
RD 2, sulfur 2, Accelerator DM / CZ 1.6. Vulcanizate
Performance (curing condition of 150 ℃ × 20min) is as follows: Shore A
Hardness of 76 degrees, the tensile strength of 23MPa, elongation at break in
500%, Akron WEAR 0.25cm3.
3 Production Process
The multi-project analysis and comparison to finalize the system do not re-ping
Plate vulcanizing machine hot plate, using the flat vulcanizing machine before installing sulfide
Watanabe template (shown in Figure 2) means to achieve the flat body and rubber base-band
Vulcanized non-slip edge the whole time, not only improve the production efficiency, but also large
Reduce the cost of major equipment modification. Curing the transition templates installed on the flat
Under the hot-plate curing press, and with the next hot-plate fixed. Curing the transition mode
The material should be flat plate vulcanizing machine the same as under the hot plate to avoid heat
The thermal expansion causes the connection to different levels of damage to various parts of the template size of
Should work with non-slip edges of peace consistent with the baseband body.
Durable ore conveyor belt production process shown in Figure 3.
In the durable ore conveyor belt manufacturing process, to ensure that the rubber
Anti-slip edges with solid body with flat base-band using the following operation methods:
(1) a good non-slip edges to suppress the transition into curing molding groove template
Inside; (2) coated with special adhesive anti-slip edges; (3) Paste and anti -
Slip edge shape, a special film of the same size; (4) in the film coating
Follow-up special adhesive; (5) Subject to the flat base-band after the body of the pre-done non-slip edges
Fit from top to bottom hot plate closure vulcanization. Non-slip edges and the use of this technology
Flat base with the body adhesive strength to reach 8kN · m-1. Cold Resistant Conveyor Belt

Introduction of conveyor belt

admin — Thu, 28 Jan 2010 02:35:57 +0000

Introduction of conveyor belt conveyor belt conveyor used to carry materials and deliver traction components. The main parameter is the width of the conveyor belt. Conveyor belt is divided into ordinary and special conveyor belt two. Common type conveyor belt such as belt conveyor belt fabric core, using an ordinary rubber as cover material, the surface smooth and flat (Figure 1. With a core is a cotton, nylon, Polyester Conveyor Belt or other fibers woven into the vinylon hierarchical or the whole fabric. Cotton fiber is applied with the first core material, easily bonded with rubber, slightly higher strength when wet, but the breaking strength and low 〔mostly in the 56 cattle / (mm layer) around〕, poor corrosion mildew the use of dwindling. 50 late 20th century began with a core made of nylon fabric material, and has become the biggest kind of quantity. nylon fiber strength of up to 700 cattle / (mm layer), water-resistant, anti-corrosion, resistance to bending fatigue ; but elongation of greater flexibility. polyester fibers performance and nylon fibers similar to, but when using flexible nylon fiber elongation is only half, is a promising material. vinylon fiber strength up to 200 cattle / (mm * layer), flexible nylon fiber elongation than the small, easy and rubber adhesive, heat resistance is good, but when the strength of wet to reduce 10 ~ 25%, only in China, Japan and a few other countries use. In the core, when Braid can be only one fiber, two kinds of fibers can also be blended or interwoven. There are special Steel Cord Conveyor Belt , high-inclination zone, heat zone, cold zone, flame retardant belt, wire mesh belt and steel and so on. ① steel cord belt: using multiple roots good and high strength flexible steel wire rope instead of a special fabric with a core of the conveyor belt (Figure 2). 60 years, the steel core with a large number of applications, its breaking strength of up to 7000 cattle / mm, elastic elongation of very small, lateral rigidity is small, good impact resistance. Most of the use of such long-distance belt conveyor belt, and in some belt feeder also has used. ② high-inclination belt: including short pattern with high pattern belt, diaphragm-type band and several types of wall-type band (Figure 3). Dwarf pattern with the face covered with a gel height of 10 mm below the rubber bumps of various shapes or convex section in order to stop the transfer layer of material used to transport bulk powder materials and small particles. Pattern with a high surface bumps with a height of between 10 ~ 25 mm in order to prevent rolling of materials used to transport medium and large size of the bulk materials. The two inclined belt conveyor can raise about 10 °. Diaphragm-type of the face covered with sticky rubber on the high more than 100 millimeters of partitions, partitions are divided into pairs of fin-shaped shape, multi-fin-shaped, high-Article V-shape or a shape can be used to achieve up to 53 ° inclination of the upward transport. Ribs or a plate-type belt with corrugated wall of the diaphragm, rib height of 40 ~ 300 mm, this can be achieved with a vertical lifting. ③ Heat tape: Use special rubber as cover material conveyor belt, transmission temperature materials up to 800 ℃. ④ Cold Resistant Conveyor Belt : also used as covering materials, special rubber conveyor belt, can be used in -55 ℃ environment. ⑤ Flame Resistant Conveyor Belt : PVC or special rubber conveyor belt for covering materials, mainly for coal mine. It produced a strong drum or other mechanical friction difficult to produce flame and cause an explosion. ⑥ wire mesh belt: from woven wire, there is no cover, -55 ~ 1200 ℃ for the transfer of materials or in the transportation of materials to complete the dehydration operation. ⑦ strip: from 0.2 ~ 4 mm thick cold-rolled steel plates, mostly used in the drying furnace conveyor. ⑧ rope traction belt. Conveyor belt joint approach the quality of the joints have a great impact on the use of belt conveyors. Fabric core conveyor belt, the joint method of mechanical method, curing and cold viscosity law. Mechanical method will take both ends with special clamp connections, this method is simple and easy removal, but the joint strength decrease at more, only on a short belt conveyor. Sulfide method is to bring the two ends of a certain size in accordance with core layer Generative ladder-shaped, and bonded with each other before putting the raw rubber to vulcanization. Reduce the intensity of their joints at relatively small joints long life, but the operation time-consuming and require special curing equipment. Cold-curing adhesive method similar to the operation of law, only to use a special adhesive that will take both ends and not for vulcanization bonding. This approach has the advantage of fewer joints at lower intensity, easy to operate, time-saving, does not require special equipment. Steel cord belt connector with curing method, curing before the first rubber band at both ends of strip, will rope cross-lap, and then Rubbing raw rubber vulcanization. Strip joints using welding or riveting.

Talk about the roller conveyor to develop in China

admin — Thu, 14 Jan 2010 12:39:06 +0000

Talk about the roller conveyor to develop in China
Roller Conveyor with transfer a large amount of simple structure, easy maintenance, parts standardization, etc., are widely used in mining, metallurgical and coal industries, is used to transport loose materials or into items, according to transportation process requirements can be a single transmission, can also be more than one composition or the composition of other transport equipment, horizontal or inclined transportation system to meet different types of operating line layout of the need for transport packing density of less than 1.67 / t / cubic meter, easy to dig a powder, granular , small block of low-abrasive materials and bags of materials, such as coal, gravel, sand, cement, fertilizer, and grain. Sent material temperature is less than 60 ℃. The form of their captain and assembly can be determined according to user requirements, transmission can be electric drum can also be used with a drive rack drive. Oil Resistant Conveyor Belt.
Roller conveyor belt structure, in various forms, there are groove drum machine, flat-type roller machine, climbing drum machine, roll drum machine, turning drum machines and other forms.
Commonly used belt conveyor can be divided into: general canvas core conveyor belt, steel cord belt transmission aircraft high-strength, all under the transport belt conveyor explosion-proof, flame-type belt conveyer, double-speed dual-Yun belt conveyor, reversible Mobile belt conveyor, belt conveyor, and so cold.
Roller Conveyor mainly by the rack, conveyor rollers, roller roller, tensioning devices, drives etc..
In the roller conveyor to run into, you must do the following:
1. All will always be the power switch, inspection equipment into the power supply is normal and the power indicator is light. To normal the next step.
2. All the power switch on each loop, check whether it is normal. The normal state as follows: equipment is not action, roller conveyors running light does not shine, inverter and other equipment of the power indicator light, inverter display panel shows the normal (no fault code display).
3. In accordance with the order process to start all electrical equipment, electrical equipment to start on a normal (electrical or other device has reached the normal speed, normal state) and then the next one electrical device startup.
In the roller conveyor operations, Cold Resistant Conveyor Belt are transported goods must comply with the provisions of items designed to comply with the designed capacity of roller conveyors. Second, the conveyor belt manufacturer warned that they should note that officers shall not touch on all kinds of roller conveyor moving parts, non-professionals are not free to contact with electrical components and control buttons and so on. Finally, in the roller conveyor operation can not be right after the level converter circuit, such as the identification of maintenance needs, you must stop the case of inverter operation can be carried out, or inverter may be damaged.
Roller conveyor run stop, press the stop button until the system can only cut off after the cessation of all the total power supply. conveyor system
As the world’s rapid economic development and scientific and technological progress, the market for enterprise automation high efficiency and fast response capability has put forward higher requirements. Any one link in the supply chain will be related to the normal operation of enterprises. If your idea into the material handling control flow of material out of the valve. From this perspective, you will realize high-yielding and efficient loading and unloading equipment, intense competition has become an essential component. As an important component of modern logistics, roller conveyors to safety and transport efficiency of production to a new level. Roller Conveyor and effectiveness of the advanced nature have been recognized by more and more users get more and more users of all ages.

The safe operation of belt conveyor

admin — Thu, 14 Jan 2010 08:32:56 +0000

The safe operation of belt conveyor
The safe operation of belt conveyor
Belt has become the production chain is one of the important equipment. Advanced structure, strong adaptability and resistance, long life, easy maintenance, protection device is a belt conveyor complete remarkable features.

In the belt conveyor is running, we should first confirm conveyor equipment, personnel, goods are transported in a safe are in good working condition; second part of the normal non-examination of the movements of foreign body, check all electrical wiring is normal, normal to the belt conveyor operational. Finally, check the power supply voltage and the device does not exceed rated voltage difference between ± 5%. conveyor system;

In the belt conveyor to run into, you must do the following:

1. All will always be the power switch, inspection equipment into the power supply is normal and the power indicator is light. To normal the next step.

2. All the power switch on each loop, check whether it is normal. The normal state as follows: equipment is not action, belt conveyor running light does not shine, inverter and other equipment of the power indicator light, inverter display panel shows the normal (no fault code display).

3. In accordance with the order process to start all electrical equipment, electrical equipment to start on a normal (electrical or other device has reached the normal speed, normal state) and then the next one electrical device startup. Flame Resistant Conveyor Belt.

In the belt conveyor is running, you must comply with the design of goods are transported goods provided the ability to comply with the design of belt conveyors. Second, pay attention to all categories of personnel shall not touch belt conveyor moving parts, non-professionals are not free to contact with electrical components and control buttons and so on. Finally, in the belt conveyor operation can not be right after the level converter circuit, such as the identification of maintenance needs, you must stop the case of inverter operation can be carried out, or inverter may be damaged. Cold Resistant Conveyor Belt;

Belt conveyor running stop, press the stop button until the system can only cut off after the cessation of all the total power supply.

The national industry standard for conveyor belt

admin — Thu, 14 Jan 2010 08:30:25 +0000

The national industry standard for conveyor belt

Standard Number Standard Name Release date of the state sector
BB / T 0022-2004 corrugated board conveyor belt of the State Development and Reform Commission 2004-06-01 existing
GB / T 10822-2003 general-purpose flame-retardant fabric core conveyor belt of Quality Supervision, Inspection and Quarantine. 2004-02-01 existing
GB / T 12736-1991 conveyor mechanical joint strength of the static test method of determination of the current Bureau of Technical Supervision 1992-02-01
GB / T 15902-1995 fabric conveyor belt elastic modulus of the current test method Bureau of Technical Supervision 1996-08-01
GB / T 17044-1997 steel cord conveyor belt cover layer and core layer adhesive strength test method of the present Bureau of Technical Supervision 1998-04-01
GB / T 20021-2005 canvas core heat-resistant conveyor belt of Quality Supervision, Inspection and Quarantine. 2006-05-01 existing
GB 21352-2008 mine use flame-retardant conveyor belt steel cord of Quality Supervision, Inspection and Quarantine. 2008-07-01 existing
GB / T 3690-1994 fabric conveyor belt tensile strength and elongation of the current determination of Bureau of Technical Supervision 1994-10-01
GB / T 4490-1994 conveyor size Bureau of Technical Supervision 1995-10-01 existing
GB / T 5752-2002 conveyor symbol of Quality Supervision, Inspection and Quarantine. 2002-12-01 existing
GB / T 5753-2008 the total thickness of steel cord conveyor belt and cover layer thickness determination of China Petroleum and Chemical Industry Association. 2008-09-01 existing
GB / T 5754.2-2005 longitudinal tensile steel cord conveyor belt Part 2: Determination of tensile strength of Quality Supervision, Inspection and Quarantine. 2006-05-01 existing
GB / T 5755-2000 bonding strength of steel cord conveyor belt rope Determination of Quality Supervision, Inspection and Quarantine. 2001-03-01 existing
GB / T 5756-1986 terms conveyor belt with the existing National Bureau of Standards 1986-10-01
GB / T 6759-2002 fabric conveyor belt interlayer adhesive strength test method of Quality Supervision, Inspection and Quarantine. 2003-04-01 existing
GB / T 7983-2005 horizontal conveyor belt into the groove of flexibility and Test Methods of Quality Supervision, Inspection and Quarantine. 2006-05-01 existing
GB / T 7984-2001 conveyer belt covered with rubber or plastic layer of general-purpose fabric conveyor belt of Quality Supervision, Inspection and Quarantine. 2001-10-01 existing
GB / T 7985-2005 conveyor belt fabric conveyor belt tear test method of the expansion of Quality Supervision, Inspection and Quarantine. 2006-05-01 existing
GB / T 7986-1997 friction roller conveyor Bureau of Technical Supervision 1998-04-01 existing test methods
GB / T 9770-2001 general-purpose steel cord conveyor belt State Administration of Quality Supervision, Inspection and quarantine. 2001-10-01 existing
HG 2014-2005 rope traction flame-retardant chemical industrial belt conveyor belt technology standardization. 2006-01-01 existing
HG / T 2194-2006 multi-layer conveyor belt structure, the existing requirements 2007-03-01
HG 2297-1992 heat-resistant conveyor belt and chemical industries 1993-10-01 existing
HG / T 2410-2006 sample 2007-03-01 existing conveyor
HG 2539-1993 steel cord conveyor belt 1990-10-01 Current Flame
HG / T 2648-1994 conveyor roller friction tester current technical condition 1995-03-01
HG 2805-1996 coal mine conveyor belt with the flame-retardant fabric 1993-05-01 existing core
HG / T 2818-1996 light duty conveyor belt 1993-05-01 existing
HG / T 2820-1996 conveyor belt nylon and polyester and nylon dipped canvas 1993-05-01 existing
HG / T 3046-1999 fabric conveyor belt appearance quality of existing provision 2000-12-01
HG / T 3056-2006 conveyor belt 2007-03-01 General storage and handling of existing
HG / T 3646-1999 general-purpose anti-tear the existing steel cord conveyor belt 1999-06-04
HG / T 3647-1999 Cold Resistant Conveyor Belt1999-06-04 existing
HG / T 3714-2003 Oil Resistant Conveyor Belt of the State Development and Reform Commission 2004-05-01 existing
HG / T 3782-2005 acid and alkali chemical industry belt conveyor technology standardization. 2006-01-01 existing
HG / T 3973-2007 general-purpose steel cord conveyor belt 2008-04-01 existing flame-retardant
HG / T 4062-2008 Sidewall Conveyor Belt 2008-10-01 Current Waveform
MT / T 1018-2006 Mine Classification and specifications for the conveyor belt State Production Safety Supervision Administration. 2006-12-01 existing
MT 212-1990 Mine conveyor belt into the groove of the existing Department of Energy 1990-12-01
MT 317-2002 Coal Mine conveyor belt as a whole with the existing core Economy and Trade Committee 2002-09-01
MT 318.1-1997 coal mine conveyor belt mechanical joint technical conditions of existing coal industry 1998-04-01
MT / T 319-2006 coal conveyor belt buckle mechanical joints with the National Development and Reform Commission 2006-08-01 existing
MT 449-1995 Coal Mine flame-retardant anti-static wire rope traction belt test methods and determine the rules of the existing coal industry 1996-03-01
MT 450-1995 Steel Cord Conveyor Belt for coal mine fire-retardant anti-static test method and determine the rules of the existing coal industry 1996-03-01
MT 668-1997 Mine flame-retardant steel cord conveyor belt technical conditions for the current coal industry 1998-04-01
MT 669-1997 Mine flame-retardant wire rope traction belt and technical conditions of existing coal industry 1998-04-01
MT 830-1999 Mine flame-retardant fabrics laminated conveyor belt of existing State Bureau of Coal Industry 2000-03-15
MT 914-2002 Mine flame-retardant fabric core conveyor belt the whole Economy and Trade Committee 2002-09-01 existing

Decided to roller service life of three major factors that

admin — Thu, 14 Jan 2010 08:25:24 +0000

Decided to roller service life of three major factors that

   Prop roll is an important component of belt conveyor components, the main shoulder load transport material role in the transportation belt machine
To withstand more than 70% in the resistance, is the largest amount of belt machine replacement parts most frequently, so the service life of roller
In the whole belt drive is very important.
Performance impact roller idler is mainly due to the internal structure Pipe Conveyor Belt.
    Good sealing effect:
    Roller sealing the internal use of axial non-contact labyrinth seals, which is characterized by inner and outer seal formed between the small song
Folding space to achieve sealing, dustproof result is better, but the water less effective, while the underground conveyor dust production situation is large,
At the same time water dust, the roller must be used for better dust sealing, waterproofing effect. If the rollers inside the water would erode the shaft
Cheng, into the dust will damage bearings, ultimately affect the life of rollers.
    Idler shaft coaxial Difference: Cold Resistant Conveyor Belt.
    Idler shaft for hard-drawn optical axis, which is characterized by its surface roughness and dimensional accuracy can be achieved without a blueprint processing requirements, with up
Convenient, labor-saving effort. However, due to production of cold-drawn optical axis due to factors such as tire wear and tear caused by a dimensional accuracy unstable, often have
Exceeding phenomenon, coupled with the transport process could easily lead to bending, so that roller shaft coaxial Difference, installed at both ends of roller shaft bearing clearance
Can not be guaranteed, thereby increasing the resistance roller spin, impact idler life.
    Bearing coaxial Difference:
    Roller bearing is used for stamping, and tube skin with the Department, without processing, welding in the cylinder bearing directly on the skin. When stamping bearing
Do not round or barrel skin of the face with the Department of inequality problems are easy to cause skin tube after welding at both ends of the different shaft bearing, leading to bearing
Clearance decreases, the resistance increases rotation, rotation are not agile.

Adhesive tape industry, the domestic situation and problems of

admin — Tue, 12 Jan 2010 14:22:24 +0000

Although the adhesive tape industry in China has been greater development, but in quality as compared with the advanced countries there are still large gaps, and the uneven development among the various enterprises, mainly in the following six aspects. conveyor belt

1. conveyor belts Varieties of small, incomplete series of specifications. My tape less product variety, size series of incomplete, tape the lack of high-tech is particularly prominent. For a variety of special conveyor belt, the domestic development and the current Although a small amount of production, but standard varieties are few. For the transmission belt, the domestic automotive V belt type of wrapper is currently still mainly trimming proportion of type V belt is also less. XH, XXH other large pitch, 3000mm or larger length of the belt, little can produce.

2. Shorter service life. Domestic standard conveyor transport life of 50 million tons, while developed countries have more than 2 million tons. The design life of the tape outside the general fabric core conveyor belt in five years or more, steel cord conveyor belt for 15 years. Germany, the service life of steel cord conveyor belt has been the record of 20 years, and our life of theSidewall Conveyor Beltproduct is only 8-10 years. Produced by developed countries combine with the V belt life over 1000h, combine with the domestic agricultural V belt life compared with foreign advanced products are also large disparities. Domestic standard automotive V belt life of 30000km, made the timing conveyor system belt and the V-ribbed belts, only some of the products meet OEM matching requirements. Rubber Conveyor Belt

3. A lower grade. Compared with developed countries, domestic-grade tape is also relatively low. On the skeleton of the fabric core conveyor belt material, developed countries have already eliminated the cotton fiber in place of nylon, polyester and aramid, while the output of China’s cotton canvas belt still a considerable proportion. In the fabric structure, the developed countries have gradually from high strength, high-performance straight through the core instead of plain cloth fabric cord fabric core and core, while the domestic straight through the fabric core conveyor belt is just at the exploratory research stage. As the rope conveyor belt with a high strength, elongation is small, into a good groove, dynamic performance, high reliability connectors, suitable for long-distance, large capacity, high efficiency modern transport needs. Developed countries, steel cord conveyor belt production accounts for about 25%, while China accounted for only about 10%. In the V belt products, developed countries have realized the rope structure and the skeleton material of polyester-based, now part of the adoption of a more excellent performance of aramid cord, while the structure of domestic V belt is still the main cord, polyester V Belt V belt cord only about 15% of production. The main body of plastic material on the tape, the use of high-strength plastic materials can extend the coverage of the life of conveyor belt is generally believed that cover the gel strength from 18MPa to 21.6MPa, life can be increased by 20%, while the national standard common type to 14MPa, heavy as 18MPa. Light conveyor belt is a conveyor belt of high precision products, developed countries such as Japan, accounting for conveyor belt conveyor belt light output 15%, since the 80’s row with more than 10% annual growth rate, light conveyor belt has been extensively used thermoplastic elastomer, the United States, light conveyor belt, using thermoplastic elastomer accounts for 90%. V-belt in developed countries has achieved the chloroprene rubber-based, some use of thermoplastic elastomer, domestic V natural rubber and styrene-butadiene rubber band is still dominated. Developed countries, automobile V belt, timing belt, are now using hydrogenated nitrile rubber and other new species.

4. Product standards lag. While the tape product standards in China to actively adopt international standards and foreign advanced standards, but that is only after we have implemented the developed countries to enact, amend, and the domestic system, the revised standards are due to the development of testing methods can not keep up, generally go through two -3 years to implement. Some of product standards, which also some of the technical indicators, national standards lower than the foreign advanced standards.

Five. Exports less. At present, Steel Cord Conveyor Belt production capacity has reached conveyor belt for more than 100 million square meters, but domestic demand is only 6,000 square meters or so, supply exceeds demand. The annual export volume conveyor only about 3% of annual output. V belt and timing belt and other tape products even smaller proportion of exports, export mainly to developing countries in the region. This situation with our tape-producing countries are not proportionate. Tape’s low export volumes reflects from one side of the status quo of China’s product quality tape, which shows that our tape products in the international market, the lack of competitiveness. According to the Australian market to reflect, among the Australian market made it difficult conveyor belt, the reason First, the current China’s high-strength conveyor belt in the heat resistance, difficult to meet the requirements in terms of water seepage, Pipe Conveyor Belt and second, product quality is unstable.

6. Quality checks low passing rate. Fabric core conveyor belt through the ordinary, ordinary V belt, steel cord conveyor belt, automotive V belt, flame-retardant conveyor belt, heat-resistant conveyor belt, timing belt and other tape products of national supervision inspection four times, the National Product Quality Inspection Commission 1, Industry testing seven times, the overall pass rate of 78.4% sample.

Sample involved a total of 194 samples of conveyor type, sampling a pass rate of 77.8%. Conveyor belt products are the main problem is. Adhesion strength between layers, covered by plastic tensile strength and elongation at break, abrasion resistance of rubber covers, etc. 9 technical specifications do not meet standards. Transmission belt products are the main problems is the product of the size of deviation, the middle layer of adhesive strength (or the cord out of the intensity), fatigue life, and several technical indicators do not meet standards. Cold Resistant Conveyor Belt

Basic knowledge of conveyor belt

admin — Wed, 06 Jan 2010 03:17:23 +0000

Conveyor belt known as the transport belt is a belt conveyor for carrying and transportation of materials to play the role of rubber and fiber, metal composite products, or plastics and composite fabrics products. Belt conveyor in the agricultural, industrial and mining enterprises and transportation are widely used for transmission of a variety of solid lumps and powder-like material or into the items can be continuous, high efficiency, large angle transport, safe operation, ease of use, easier to maintain , freight costs are low, and can shorten the transport distance, reducing construction costs, save manpower and resources.
Many types of conveyor belt, according to use classification are: general purpose conveyor belt, flame-retardant anti-static conveyor belt, general retardant conveyor belt, heat resistant conveyor belt, heat resistant conveyor belt, acid and alkali conveyor belt, oil resistant conveyor belt, cold resistant conveyor belt and so on.
In accordance with structural material classifications are: Ordinary cotton canvas belt, nylon conveyor belt, polyester belt, steel cord conveyor belt, PVC solid woven conveyor belt, PVG solid woven conveyor belt, steel cable conveyor belt and so on.
According to product mix classifications are: layered belt, the whole core conveyor belt, steel cord conveyor belt, steel cable conveyor belt, pipe conveyor, pattern conveyor belt, rib belt, reducing floor conveyor belt and so on.
For convenience, we generally use a unified representation to represent a variety of conveyor belt, conveyor belt, said a variety of categories as follows:
1, stratified, said conveyor belt used Method: NN200 1000 * 6 * (6 +3), for example, NN200, said that the nylon 200, 1000, said the width of the conveyor belt, 6, said nylon layers, (6 +3 ) that cover the rubber conveyor belt up and down the 6 mm and 3 mm thick.
2, said steel cord conveyor belt commonly used methods:
To ST1000H1000? 4.0-6.0-6.0 as an example:
ST1000, said that the strength of specifications, in order to 1000N/mm
H said that the performance level of cover compound
1000 represents the width of the product, unit mm
? 4.0 represents the diameter of the rope, unit mm
6.0-6.0 indicated that the thickness of the upper and lower plastic covers, unit mm
3, the whole conveyor belt of the representation
General Mine flame-retardant PVC and PVG conveyor belt with the intensity of the entire core-level and to represent the width of the conveyor belt. Level crossing generally divided into: 4, 5, 6, 7, 8, 9, 10, 11, and up to 16 conveyor belt, corresponding to the intensity of 680S, 800S, 1000S, 1250S, 1400S, 1600S, 1800S, 2000S, 2240S, 2500S, 2800S, 3100S and 3400S. Is generally the width of conveyor belt: 500mm, 650mm, 800mm, 1000mm, 1200mm, 1400mm, 1600mm, 1800mm and so on.
All the conveyor belt into the ring must be received before actual use, so belt connector is very critical. Joints will have a direct impact on the life of conveyor and transmission lines that the smooth running smoothly. The following describes several conveyor belt joint approach:
1, the joint approach:
Conveyor belt joint methods are: mechanical joints, cold twist connectors, heat curing joint and several other commonly used methods.