A conveyor belt structure to prevent paste sticking
By adopting a modularly designed conveyor belt structure in the gypsum production process, and through the combination of limit blocks and inserts, the problem of traditional conveyor belt sticking is solved, enabling rapid replacement of locally worn belts, reducing maintenance costs, and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAISHAN GYPSUM (GUANGXI) CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-07-10
AI Technical Summary
Traditional conveyor belts are prone to sticking during gypsum slurry production due to the viscosity, high humidity, and crystallization characteristics of the slurry, resulting in reduced equipment efficiency and increased maintenance costs. Furthermore, existing technology cannot quickly repair localized wear areas, requiring complete replacement, which leads to high costs and long downtime.
The conveyor belt structure adopts a modular design, including limit blocks and detachable inserts. The inserts are composed of a low surface energy anti-stick coating, an adhesive reinforcement layer, and a thermally stable flexible support layer. Partial replacement can be achieved through the cooperation of the limit blocks and silicone strips, avoiding complete disassembly.
It enables rapid replacement of locally worn areas, reduces maintenance costs and downtime, ensures effective shearing of high-viscosity slurries under vibration and high temperature, and avoids slurry adhesion residue.
Smart Images
Figure CN224477441U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of gypsum board production equipment, specifically to a conveyor belt structure that prevents slurry from sticking together. Background Technology
[0002] During the production and transportation of gypsum slurry, the surface of the conveyor belt is prone to adhesion due to the viscosity, high humidity, and crystallization characteristics of the slurry, leading to material residue, reduced equipment efficiency, and increased maintenance costs. Traditional conveyor belts often use polytetrafluoroethylene (PTFE) coatings to reduce adhesion. Although PTFE coatings have low surface energy, they are prone to localized peeling under long-term impact from slurry and equipment vibration, resulting in a sharp decline in anti-adhesion performance. In existing technologies, the composite coating repair process is complex and cannot quickly repair localized worn areas. Therefore, conveyor belts with failed anti-adhesion functions need to be replaced entirely. However, the replacement materials are expensive and the disassembly and assembly are time-consuming, making it difficult to adapt to the needs of continuous industrial production.
[0003] Therefore, there is an urgent need for a modular, partially replaceable anti-sticking structure to ensure that gypsum slurry does not adhere to residues during the operation of the conveyor belt, while reducing maintenance costs and downtime to meet the industrial continuous production needs of high-viscosity gypsum slurry. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a conveyor belt structure that prevents slurry from sticking together, so as to solve the problem that the traditional conveyor belt needs to be replaced as a whole when the anti-sticking function fails, which leads to increased maintenance time and cost.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A conveyor belt structure for preventing slurry adhesion includes a conveyor belt body, wherein a plurality of limiting blocks are provided on the outer surface of the conveyor belt body along the circumferential direction, and an insert can be detachably inserted between every two limiting blocks; the insert includes a low surface energy anti-stick coating, an adhesive reinforcement layer and a thermally stable flexible support layer stacked from top to bottom.
[0007] As a further improvement of this utility model, the conveyor belt body is inclined.
[0008] As a further improvement of this utility model, the limiting block is T-shaped, with its vertical side fixedly connected to the conveyor belt body, and its horizontal side having a textured surface.
[0009] As a further improvement of this utility model, each of the limiting blocks is provided with a high-temperature resistant silicone strip at the two included corners, and the two sides of the insert are respectively detachably inserted between the two limiting blocks through the interference fit of the high-temperature resistant silicone strip with the limiting block.
[0010] As a further improvement of this utility model, the low surface energy anti-stick coating is polytetrafluoroethylene.
[0011] As a further improvement of this utility model, the thermally stable flexible support layer is a high-temperature resistant rubber substrate.
[0012] As a further embodiment of this invention, the adhesive reinforcement layer is polyamide-imide.
[0013] By adopting the above technical solution, this utility model will have the following beneficial effects:
[0014] This utility model provides a conveyor belt structure that prevents slurry adhesion. By detachably inserting inserts between every two limit blocks, the modular design of the inserts is achieved. This allows for independent replacement of locally worn areas, avoiding the cumbersome operation of disassembling the entire conveyor belt when the anti-adhesion layer fails. This significantly shortens downtime for maintenance, and replacing only the local inserts reduces material waste. Compared with the traditional overall replacement solution, this significantly reduces maintenance costs.
[0015] Furthermore, the insert's multi-layered structure (low surface energy anti-stick coating, adhesive reinforcement layer, and thermally stable flexible support layer) ensures effective separation of high-viscosity slurries during transport. The low surface energy anti-stick coating prevents slurry adhesion and residue; the adhesive reinforcement layer strengthens the interlayer bond between the low surface energy anti-stick coating and the thermally stable flexible support layer, preventing PTFE failure due to localized peeling; and the thermally stable flexible support layer maintains elasticity at high temperatures, providing mechanical support for the low surface energy anti-stick coating and adhesive reinforcement layer. The synergistic effect of each layer on the insert balances anti-sticking, wear resistance, and structural stability, ensuring effective separation of high-viscosity slurries during vibration and high-temperature transport. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the conveyor belt structure for preventing slurry adhesion as described in an embodiment of the present invention;
[0018] Figure 2 for Figure 1 Sectional view at point A in the middle.
[0019] The correspondence between the labels and component names in the attached figures is as follows:
[0020] 1. Conveyor belt body; 2. Limiting block; 21. Embossed texture; 3. Insert plate; 31. Low surface energy anti-stick coating; 32. Adhesive reinforcement layer; 33. Thermally stable flexible support layer; 4. High temperature resistant silicone strip. Detailed Implementation
[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the following description is to be considered exemplary in nature and not restrictive.
[0022] Please refer to Figure 1 and Figure 2 In one embodiment of the conveyor belt structure for preventing slurry adhesion provided by this utility model, the conveyor belt structure for preventing slurry adhesion includes a conveyor belt body 1, which adopts the existing conveyor belt structure design and is used to transport gypsum slurry; a plurality of limiting blocks 2 are evenly arranged circumferentially on the outer surface of the conveyor belt body 1, and all limiting blocks 2 extend along the width direction of the conveyor belt body 1, and an insert 3 can be detachably inserted between every two limiting blocks 2; the insert 3 is rectangular and includes a low surface energy anti-adhesion coating 31, an adhesive reinforcement layer 32 and a thermally stable flexible support layer 33 stacked sequentially from top to bottom.
[0023] The low surface energy anti-stick coating 31 is made of polytetrafluoroethylene (PTFE). PTFE has excellent non-stick properties, high temperature resistance, and chemical corrosion resistance, and can work continuously at 240~260℃, making it suitable for the high-temperature conveying environment of gypsum slurry. It allows the slurry to be quickly and smoothly detached from the surface of the insert 3, avoiding adhesion residue. The adhesive reinforcement layer 32 is made of polyamide-imide (PAI). PAI has a tensile strength exceeding 172MPa (23℃) and a flexural strength of 157MPa (23℃). Even at a high temperature of 260℃, it can still maintain a tensile strength of 59MPa and a flexural strength of 96MPa. Its high rigidity can buffer the stress difference between rubber and PTFE, reduce the risk of interfacial shear failure, and prevent PTFE from failing due to local peeling. The heat-stabilized flexible support layer 33 is a high-temperature resistant rubber substrate that can maintain elasticity at high temperatures of -60~250℃. It provides mechanical support for the low surface energy anti-stick coating 31 and the adhesive reinforcement layer 32, and can bend with the rotation of the conveyor belt.
[0024] In this embodiment, when the low surface energy anti-stick coating 31 is subjected to long-term impact from slurry and equipment vibration, resulting in local peeling, the insert 3 corresponding to the locally worn area can be replaced, thereby reducing maintenance costs and downtime, and adapting to the industrial continuous production needs of high viscosity gypsum slurry.
[0025] As a preferred embodiment, the conveyor belt body 1 can be inclined. Although the low surface energy anti-stick coating 31 (PTFE) has excellent non-stick properties, which helps prevent slurry from sticking, if the conveyor belt is designed to be completely horizontal or the inclination angle is insufficient, the low friction of PTFE may prevent the slurry from moving forward effectively. Based on this, by increasing the inclination angle of the conveyor belt body 1 (typically ≥5°), the lack of low friction of PTF can be compensated by using gravity to assist the slurry sliding.
[0026] As a preferred embodiment, the limiting block 2 is T-shaped, with its vertical side fixedly bonded to the conveyor belt body 1, and its horizontal side upper surface is provided with a textured surface 21. Specifically, the textured surface 21 is formed by laser etching, sandblasting and other processes to form a micron-level textured surface (such as grooves or honeycomb textures). This textured surface structure can reduce the contact area between the slurry and the coating by 30%-50%. This structure is similar to the "lotus leaf effect", which uses air retention to form a physical barrier, reducing slurry wetting and adhesion, and preventing slurry from sticking to the upper surface of the limiting block 2.
[0027] As a preferred embodiment, a high-temperature resistant silicone strip 4 (temperature resistance range -60℃~300℃) is fixedly bonded to both sides of the included angle of each limiting block 2. The high-temperature resistant silicone strip 4 is designed with an L-shaped cross-section. The two sides of the insert 3 are respectively inserted into the limiting block 2 through an interference fit between the two limiting blocks 2 via the high-temperature resistant silicone strip 4. The design of the high-temperature resistant silicone strip 4 is to use its elastic deformation to fill the gap between the insert 3 and the limiting block 2, preventing slurry from seeping in.
[0028] The method of use or working principle of this utility model is as follows:
[0029] When the low surface energy anti-stick coating 31 of the conveyor belt body 1 is partially peeled off due to the impact of the slurry and the vibration of the equipment while conveying gypsum slurry for a long time, the insert 3 with peeled coating is first removed, and then a new insert 3 is inserted. The two sides of the insert 3 are respectively connected to the limit block 2 by interference fit between the two limit blocks 2 through the high temperature resistant silicone strip 4. In other words, through the modular design of the insert 3, the local wear area can be replaced independently, avoiding the cumbersome operation and material waste of traditional conveyor belts that need to be completely disassembled due to the failure of the anti-stick layer.
[0030] During the conveyor belt body 1's transport of gypsum slurry, the low surface energy anti-stick coating 31 of the insert 3 allows the slurry to quickly and smoothly detach from the surface of the insert 3, preventing adhesion residue. The adhesive reinforcement layer 32 connects the low surface energy anti-stick coating 31 and the thermally stable flexible support layer 33, enhancing interlayer bonding, reducing the risk of interface shear failure, and preventing PTFE failure due to localized peeling. The thermally stable flexible support layer 33 maintains elasticity at high temperatures, providing mechanical support for the low surface energy anti-stick coating 31 and the adhesive reinforcement layer 32. The synergistic effect of the layers of the insert 3 balances anti-sticking, wear resistance, and structural stability, ensuring effective peeling of high-viscosity gypsum slurry during vibration and high-temperature transport, preventing slurry adhesion residue.
[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A conveyor belt structure for preventing slurry adhesion, comprising a conveyor belt body (1), characterized in that, The outer surface of the conveyor belt body (1) is provided with a plurality of limiting blocks (2) along the circumferential direction, and a insert (3) can be detachably inserted between each two limiting blocks (2); the insert (3) includes a low surface energy anti-stick coating (31), an adhesive reinforcement layer (32) and a thermally stable flexible support layer (33) stacked sequentially from top to bottom.
2. The conveyor belt structure for preventing slurry adhesion according to claim 1, characterized in that, The conveyor belt body (1) is set at an angle.
3. The conveyor belt structure for preventing slurry adhesion according to claim 1, characterized in that, The limiting block (2) is T-shaped, with its vertical side fixedly connected to the conveyor belt body (1), and its horizontal side has a textured surface (21).
4. The conveyor belt structure for preventing slurry adhesion according to claim 2, characterized in that, Each of the limiting blocks (2) has a high-temperature resistant silicone strip (4) at the two corners. The two sides of the insert (3) are respectively connected to the limiting blocks (2) through the high-temperature resistant silicone strip (4) to achieve detachable insertion between the two limiting blocks (2).
5. The conveyor belt structure for preventing slurry adhesion according to claim 1, characterized in that, The low surface energy anti-stick coating (31) is polytetrafluoroethylene.
6. The conveyor belt structure for preventing slurry adhesion according to claim 1, characterized in that, The thermally stable flexible support layer (33) is a high-temperature resistant rubber substrate.
7. The conveyor belt structure for preventing slurry adhesion according to claim 1, characterized in that, The adhesive reinforcement layer (32) is polyamide-imide.