Abrasion-resistant top-coated sandblasting special triangular belt and its application

Abstract

The application discloses a special sand-blasting triangular belt with wear-resistant top glue, which comprises a strong layer, a stretching layer, a compression layer, a cloth layer and wear-resistant top glue; the strong layer is polyester steel wire; the stretching layer and the compression layer are adhered to the upper and lower sides of the strong layer; the cloth layer is wrapped outside the strong layer, the stretching layer and the compression layer to form a basic triangular belt; and the basic triangular belt is provided with a layer of wear-resistant top glue on the top. The triangular belt is provided with a layer of wear-resistant top glue on the top, which improves the wear resistance of the top surface; the triangular belts are arranged side by side to form a sand-blasting production line conveying line, which can complete the conveying task, effectively avoid the accumulation of the sprayed material, improve the sand-blasting effect and reduce the energy consumption of the conveying line; and the wear-resistant top glue can withstand the impact of the sprayed material and is not easy to wear, so that the service life of the triangular belt in the sand-blasting production line is long.

Description

Technical Field

[0001] This invention relates to rubber belts, and more specifically to a sandblasting-specific V-belt with a wear-resistant top adhesive and its application. Background Technology

[0002] A V-belt is a trapezoidal cross-section ring-shaped transmission belt suitable for power transmission with large transmission ratios. V-belts have high transmission friction, allowing them to transmit significant power. They are also easy to install and maintain, offer high transmission efficiency, and produce low noise, making them widely used in the power transmission of various mechanical equipment. Existing V-belts consist of a reinforcing layer, a tension layer, a compression layer, and a fabric covering layer. During operation, they achieve transmission through friction between their sides and the pulley.

[0003] Sandblasting is a surface treatment process that uses compressed air to propel abrasive materials (such as copper ore sand, quartz sand, corundum, and iron sand) at high speed onto the surface of the workpiece. This alters the surface properties of the workpiece, improving its mechanical performance. However, in existing sandblasting machines, abrasive material tends to accumulate on the conveyor belt during operation, making cleaning difficult, reducing the conveyor belt's lifespan, and negatively impacting the sandblasting effect.

[0004] Conveyor belts are used to transport materials, while drive belts are used to transmit power. They are two different types of rubber belts, and traditionally, the two were clearly distinct. However, with technological advancements, in recent years, some V-belts have emerged for specific working conditions, undertaking both transmission and conveying functions. Summary of the Invention

[0005] This invention provides a sandblasting-specific V-belt with a wear-resistant top adhesive, and its application in a sandblasting production line. The V-belt has a layer of wear-resistant top adhesive on its top surface, improving its wear resistance. When arranged side-by-side to form a sandblasting production line conveyor, it can complete the conveying task while effectively preventing the accumulation of abrasive material, thereby improving the sandblasting effect and reducing the energy consumption of the conveyor line. Furthermore, the wear-resistant top adhesive can withstand the impact of the abrasive material and is not easily worn, resulting in a longer service life of the V-belt in the sandblasting production line.

[0006] For V-belts, the present invention provides the following technical solution:

[0007] A sandblasting-specific V-belt with a wear-resistant top adhesive, comprising a reinforcing layer, a tension layer, a compression layer, a fabric covering layer, and a wear-resistant top adhesive; the reinforcing layer is made of polyester tempered hemp fibers; the tension layer and the compression layer are bonded to the upper and lower sides of the reinforcing layer; the fabric covering layer wraps around the outside of the reinforcing layer, the tension layer, and the compression layer to form a base V-belt; and a layer of wear-resistant top adhesive is provided on the top of the base V-belt.

[0008] The tensile layer raw material components, by weight, include: 80-90 parts chloroprene rubber, 10-20 parts natural rubber, 2-5 parts zinc oxide, 1-2 parts stearic acid, 3-5 parts magnesium oxide, 4-6 parts silicon dioxide, 4-6 parts methyl methacrylate, 2-4 parts coumarone resin, 20-25 parts carbon black N330, 6-8 parts aromatic oil, 0.3-0.5 parts accelerator DM, 2-5 parts antioxidant RD, and 3-5 parts sulfur;

[0009] The raw material components of the compression layer, by weight, include: 80-90 parts of chloroprene rubber, 10-20 parts of natural rubber, 2-5 parts of zinc oxide, 1-2 parts of stearic acid, 3-5 parts of magnesium oxide, 30-35 parts of carbon black N774, 2-4 parts of plasticizer DBP, 1-3 parts of calcium carbonate, 2-4 parts of coumarone resin, 5-7 parts of heavy oil, 0.4-0.6 parts of accelerator CZ, 2-5 parts of antioxidant RD, and 3-5 parts of sulfur.

[0010] Furthermore, as an optimized solution, in the aforementioned sandblasting-specific V-belt with wear-resistant top adhesive, the tensile layer raw material components, by weight, include: 85 parts chloroprene rubber, 15 parts natural rubber, 3 parts zinc oxide, 1 part stearic acid, 4 parts magnesium oxide, 5 parts silica, 5 parts methyl methacrylate, 3 parts coumarone resin, 23 parts carbon black N330, 7 parts aromatic oil, 0.4 parts accelerator DM, 3 parts antioxidant RD, and 4 parts sulfur.

[0011] Furthermore, as an optimized solution, in the aforementioned sandblasting-specific V-belt with wear-resistant top adhesive, the raw material components of the compression layer, by weight, include: 85 parts of chloroprene rubber, 15 parts of natural rubber, 3 parts of zinc oxide, 1 part of stearic acid, 4 parts of magnesium oxide, 32 parts of carbon black N774, 3 parts of plasticizer DBP, 2 parts of calcium carbonate, 3 parts of coumarone resin, 6 parts of heavy oil, 0.5 parts of accelerator CZ, 4 parts of antioxidant RD, and 4 parts of sulfur.

[0012] Furthermore, as an optimized solution, in the aforementioned sandblasting-specific V-belt with wear-resistant top adhesive, the wear-resistant top adhesive raw material components, by weight, include: 60-70 parts natural rubber, 30-40 parts chloroprene rubber, 3-5 parts zinc oxide, 2-5 parts stearic acid, 5-7 parts silica, 1-2 parts heat-resistant antioxidant RF, 12-14 parts silica, 15-20 parts carbon black N220, 2-4 parts aramid short fiber, 3-5 parts paraffin oil, 0.6-0.8 parts accelerator DM, 4-6 parts adhesive RC, 1-3 parts antioxidant MB, and 1-3 parts sulfur.

[0013] Furthermore, as an optimized solution, in the aforementioned sandblasting-specific V-belt with wear-resistant top adhesive, the wear-resistant top adhesive raw material components, by weight, include: 65 parts natural rubber, 35 parts chloroprene rubber, 4 parts zinc oxide, 3 parts stearic acid, 6 parts silica, 1 part heat-oxidizing agent RF, 13 parts silica, 17 parts carbon black N220, 3 parts aramid short fiber, 4 parts paraffin oil, 0.7 parts accelerator DM, 5 parts adhesive RC, 2 parts antioxidant MB, and 2 parts sulfur.

[0014] Furthermore, as an optimized solution, the aforementioned preparation process of the sandblasting-specific V-belt with wear-resistant top adhesive includes the following steps:

[0015] S1. Add chloroprene rubber and natural rubber to a mixer and plasticize for 100-120 seconds. Then add zinc oxide, stearic acid, magnesium oxide, silicon dioxide, methyl methacrylate, coumarone resin, carbon black N330, and aromatic oil. Mix under pressure for 120-150 seconds. Then add accelerator DM, antioxidant RD, and sulfur. Mix for 110-130 seconds. Control the discharge temperature at 110-120℃ and the sheet thickness at 5.0±0.1mm. Cool the sheet for 8-10 hours to obtain compound A for later use.

[0016] S2, add chloroprene rubber and natural rubber to a mixer and plasticize for 100-120 seconds, then add zinc oxide, stearic acid, magnesium oxide, carbon black N774, plasticizer DBP, calcium carbonate, coumarone resin and heavy oil, mix for 100-120 seconds, then add accelerator CZ, antioxidant RD and sulfur, mix for 90-100 seconds, discharge the rubber, control the sheet thickness to 6.0±0.1mm, cool the sheet for 8-10 hours to obtain compound B, for later use;

[0017] S3, take the compound A prepared in step S1 and extrude it through a cold-feed rubber extruder to form an extension layer for later use; take the compound B prepared in step S2 and extrude it through a cold-feed rubber extruder to form a compression layer for later use.

[0018] S4. Take the compound rubber A prepared in step S1 and mix it with gasoline at a ratio of 1:1-1.2. After slurrying, put the canvas into it for impregnation, then take it out and dry it to obtain impregnated canvas for later use.

[0019] S5, add natural rubber and neoprene rubber to a mixer, masticate for 100-120 seconds, discharge the rubber, and cool for 6-8 hours to obtain masticated rubber;

[0020] S6, add plasticized rubber, zinc oxide, stearic acid, silica, heat-resistant antioxidant RF, fumed silica, carbon black N220, aramid staple fiber, and paraffin oil into a mixer, pressurize and heat to 80-90℃, mix for 150-160 seconds, then add accelerator DM, binder RC, antioxidant MB, and sulfur, mix for 120-140 seconds, control the temperature at 100-120℃, discharge the rubber, and obtain compound C;

[0021] S7. Cut the compound rubber C into rubber, roll it, and roll it into a triangular shape 4-5 times. Adjust the roller gap and control the thickness of the rubber sheet to 4.0±0.2mm. After the sheet is produced, cool it for 8-12 hours or more to obtain the wear-resistant top rubber for later use.

[0022] S8, on the coating machine, the stretch layer, compression layer and strength layer are bonded together, then transferred to the forming and wrapping machine to wrap the dipped canvas, and then the wear-resistant top adhesive is pressed onto the dipped canvas to make a strip blank;

[0023] S9 involves mounting the blank onto the mold and vulcanizing it to obtain the product.

[0024] Furthermore, as an optimization, in the aforementioned sandblasting-specific V-belt with wear-resistant top adhesive, the thickness of the wear-resistant top adhesive after vulcanization and bonding is 3.0±0.1mm.

[0025] Furthermore, as an optimization, in the aforementioned sandblasting-specific V-belt with wear-resistant top adhesive, the upper surface of the wear-resistant top adhesive has a pattern, which is one of the following: I-shaped, herringbone, or grid-shaped.

[0026] Furthermore, as an optimization, in the aforementioned sandblasting-specific V-belt with wear-resistant top adhesive, in step S9, the vulcanization temperature is 130-150℃ and the vulcanization time is 20-30 minutes.

[0027] For applications, the present invention provides the following technical solutions:

[0028] The conveyor line of the sandblasting production line consists of a set of V-belts arranged side by side; the V-belts are the sandblasting-specific V-belts with wear-resistant top adhesive of the present invention.

[0029] Compared with the prior art, the above-mentioned technical solution of the present invention has achieved the following beneficial technical effects:

[0030] (1) This invention uses natural rubber and neoprene rubber as raw materials, and adds specific additives such as silica, heat-resistant oxygen agent, white carbon black, carbon black, and aramid short fiber to make wear-resistant top adhesive. The wear-resistant top adhesive is evenly bonded to the top of the fabric layer, which increases the working contact area of ​​the V-belt, improves the wear resistance, and enables the V-belt to withstand the impact of the sprayed material, making it less prone to wear and with a long service life.

[0031] (2) The triangular belts of the present invention are arranged side by side to form a sandblasting production line conveyor line. There is a gap between each triangular belt, which allows the abrasive material to be discharged from the conveyor line during the sandblasting process, reducing the accumulation of abrasive material, thereby improving the sandblasting effect and reducing the energy consumption of the conveyor line.

[0032] (3) The upper surface of the wear-resistant top rubber of the V-belt of the present invention has a pattern. The pattern increases the friction between the V-belt and the material, making the material conveying more stable and less prone to slippage, thereby effectively improving the reliability of the conveyor line. Attached Figure Description

[0033] Figure 1 This is a cross-sectional view of the sandblasting-specific V-belt with wear-resistant top adhesive of the present invention;

[0034] Explanation of reference numerals in the attached diagram: 1-Abrasion-resistant top adhesive; 2-Cloth layer; 3-Tension layer; 4-Strength layer; 5-Compression layer. Detailed Implementation

[0035] The technical solution of the present invention will be further described in detail below through specific embodiments. In the present invention, unless otherwise specified, the raw materials and equipment used can be purchased from the market or are commonly used in the art. Unless otherwise specified, the methods and equipment in the following embodiments are conventional methods and equipment in the art.

[0036] Example 1

[0037] In this embodiment, a sandblasting-specific V-belt with a wear-resistant top adhesive is provided. The sandblasting-specific V-belt includes a reinforcing layer 4, a tension layer 3, a compression layer 5, a fabric covering layer 2, and a wear-resistant top adhesive 1. The reinforcing layer 4 is made of polyester tempered brown yarn. The tension layer 3 and the compression layer 5 are bonded to the upper and lower sides of the reinforcing layer 4. The fabric covering layer 2 wraps around the outside of the reinforcing layer 4, the tension layer 3, and the compression layer 5 to form a basic V-belt. A layer of wear-resistant top adhesive 1 is provided on the top of the basic V-belt.

[0038] The tensile layer raw material components, by weight, include: 85 parts chloroprene rubber, 15 parts natural rubber, 3 parts zinc oxide, 1 part stearic acid, 4 parts magnesium oxide, 5 parts silicon dioxide, 5 parts methyl methacrylate, 3 parts coumarone resin, 23 parts carbon black N330, 7 parts aromatic oil, 0.4 parts accelerator DM, 3 parts antioxidant RD, and 4 parts sulfur.

[0039] The raw material components of the compression layer, by weight, include: 85 parts chloroprene rubber, 15 parts natural rubber, 3 parts zinc oxide, 1 part stearic acid, 4 parts magnesium oxide, 32 parts carbon black N774, 3 parts plasticizer DBP, 2 parts calcium carbonate, 3 parts coumarone resin, 6 parts heavy oil, 0.5 parts accelerator CZ, 4 parts antioxidant RD, and 4 parts sulfur.

[0040] In this embodiment, the wear-resistant top adhesive raw material components include, by weight: 65 parts natural rubber, 35 parts chloroprene rubber, 4 parts zinc oxide, 3 parts stearic acid, 6 parts silica, 1 part heat-oxidizing agent RF, 13 parts silica, 17 parts carbon black N220, 3 parts aramid staple fiber, 4 parts paraffin oil, 0.7 parts accelerator DM, 5 parts adhesive RC, 2 parts antioxidant MB, and 2 parts sulfur.

[0041] In this embodiment, the preparation process of the sandblasting-specific V-belt with wear-resistant top adhesive includes the following steps:

[0042] S1. Add chloroprene rubber and natural rubber to a mixer and plasticize for 120 seconds. Then add zinc oxide, stearic acid, magnesium oxide, silicon dioxide, methyl methacrylate, coumarone resin, carbon black N330, and aromatic oil. Mix under pressure for 130 seconds. Then add accelerator DM, antioxidant RD, and sulfur. Mix for 120 seconds. Control the discharge temperature at 110℃ and the sheet thickness at 5.0mm. Cool the sheet for 10 hours to obtain compound A for later use.

[0043] S2, add chloroprene rubber and natural rubber to a mixer and plasticize for 120 seconds, then add zinc oxide, stearic acid, magnesium oxide, carbon black N774, plasticizer DBP, calcium carbonate, coumarone resin and heavy oil, mix for 100 seconds, then add accelerator CZ, antioxidant RD and sulfur, mix for 90 seconds, discharge the rubber, control the sheet thickness to 6.0 mm, and cool the sheet for 10 hours to obtain compound B, for later use;

[0044] S3, take the compound A prepared in step S1 and extrude it through a cold-feed rubber extruder to form an extension layer for later use; take the compound B prepared in step S2 and extrude it through a cold-feed rubber extruder to form a compression layer for later use.

[0045] S4. Take the compound rubber A prepared in step S1 and mix it with gasoline at a ratio of 1:1. After slurrying, put the canvas into it for impregnation, then take it out and dry it to obtain impregnated canvas for later use.

[0046] S5, add natural rubber and neoprene rubber to a mixer, masticate for 110 seconds, discharge the rubber, cool for 8 hours to obtain masticated rubber;

[0047] S6, add plasticized rubber, zinc oxide, stearic acid, silica, heat-resistant antioxidant RF, fumed silica, carbon black N220, aramid staple fiber, and paraffin oil into a mixer, pressurize and heat to 85°C, mix for 160 seconds, then add accelerator DM, binder RC, antioxidant MB, and sulfur, mix for 120 seconds, control the temperature at 110°C, discharge the rubber, and obtain compound C;

[0048] S7. Cut the compound rubber C into rubber, roll it, and wrap it in a triangular shape 4 times. Adjust the roller gap and control the thickness of the rubber sheet to 4.0 mm. After the sheet is produced, cool it for more than 12 hours to obtain the wear-resistant top rubber for later use.

[0049] S8, on the coating machine, the stretch layer, compression layer and strength layer are bonded together, then transferred to the forming and wrapping machine to wrap the dipped canvas, and then the wear-resistant top adhesive is pressed onto the dipped canvas to make a strip blank;

[0050] S9 involves mounting the blank onto the mold and vulcanizing it to obtain the product.

[0051] In this embodiment, the thickness of the wear-resistant top adhesive after vulcanization and bonding is 3.0 mm.

[0052] In this embodiment, the upper surface of the wear-resistant top adhesive has a herringbone pattern.

[0053] In this embodiment, in the aforementioned step S9, the vulcanization temperature is 140°C and the vulcanization time is 30 minutes.

[0054] Example 2

[0055] Unlike Example 1, in this example:

[0056] The tensile layer raw material components, by weight, include: 80 parts chloroprene rubber, 20 parts natural rubber, 2 parts zinc oxide, 1 part stearic acid, 3 parts magnesium oxide, 4 parts silicon dioxide, 4 parts methyl methacrylate, 2 parts coumarone resin, 20 parts carbon black N330, 6 parts aromatic oil, 0.3 parts accelerator DM, 2 parts antioxidant RD, and 3 parts sulfur.

[0057] The raw material components of the compression layer, by weight, include: 80 parts chloroprene rubber, 20 parts natural rubber, 2 parts zinc oxide, 1 part stearic acid, 3 parts magnesium oxide, 30 parts carbon black N774, 2 parts plasticizer DBP, 1 part calcium carbonate, 2 parts coumarone resin, 5 parts heavy oil, 0.4 parts accelerator CZ, 2 parts antioxidant RD, and 3 parts sulfur.

[0058] The wear-resistant top adhesive raw material components, by weight, include: 60 parts natural rubber, 40 parts chloroprene rubber, 3 parts zinc oxide, 2 parts stearic acid, 5 parts silica, 1 part heat-oxidizing agent RF, 12 parts silica, 15 parts carbon black N220, 2 parts aramid staple fiber, 3 parts paraffin oil, 0.6 parts accelerator DM, 4 parts adhesive RC, 1 part antioxidant MB, and 1 part sulfur.

[0059] Example 3

[0060] Unlike Example 1, in this example:

[0061] The tensile layer raw material components, by weight, include: 90 parts chloroprene rubber, 10 parts natural rubber, 5 parts zinc oxide, 2 parts stearic acid, 5 parts magnesium oxide, 6 parts silicon dioxide, 6 parts methyl methacrylate, 4 parts coumarone resin, 25 parts carbon black N330, 8 parts aromatic oil, 0.5 parts accelerator DM, 5 parts antioxidant RD, and 5 parts sulfur.

[0062] The raw material components of the compression layer, by weight, include: 90 parts chloroprene rubber, 10 parts natural rubber, 5 parts zinc oxide, 2 parts stearic acid, 5 parts magnesium oxide, 35 parts carbon black N774, 4 parts plasticizer DBP, 3 parts calcium carbonate, 4 parts coumarone resin, 7 parts heavy oil, 0.6 parts accelerator CZ, 5 parts antioxidant RD, and 5 parts sulfur.

[0063] The wear-resistant top adhesive raw material components, by weight, include: 70 parts natural rubber, 30 parts chloroprene rubber, 5 parts zinc oxide, 5 parts stearic acid, 7 parts silica, 2 parts heat and oxidation resistant agent RF, 14 parts silica, 20 parts carbon black N220, 4 parts aramid staple fiber, 5 parts paraffin oil, 0.8 parts accelerator DM, 6 parts adhesive RC, 3 parts antioxidant MB, and 3 parts sulfur.

[0064] Experiments show that the sandblasting V-belts with wear-resistant top rubber prepared in Examples 1-3 can all achieve the purpose of this invention. Relatively speaking, Example 1 is the optimal example, and the sandblasting V-belt with wear-resistant top rubber prepared in Example 1 has the best wear resistance, thereby extending the service life of the conveyor belt. The specific performance indicators of the V-belts and wear-resistant top rubber of Examples 1-3 are shown in the table below.

[0065] The elongation at break and tensile strength of the V-belt were tested according to GB / T 1171-2017; the fatigue life of the V-belt was tested according to GB / T 15328-2019; and the wear was tested according to GB / T9867-2013.

[0066] Performance test results:

[0067]

[0068] The foregoing general description of the invention and its specific embodiments should not be construed as limiting the technical solution of the invention. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or embodiments without departing from the constituent elements of the invention, to form other technical solutions within the scope of protection of this application.

Claims

1. A conveyor line for a sandblasting production line, characterized in that: It is made of a set of three V-belts arranged side by side; the V-belt is a sand blasting special V-belt with wear-resistant top glue; the sand blasting special V-belt comprises a strong layer (4), a stretching layer (3), a compression layer (5), a cloth layer (2) and a wear-resistant top glue (1); the strong layer (4) is polyester steel wire; the stretching layer (3) and the compression layer (5) are bonded on the upper and lower sides of the strong layer (4); the cloth layer (2) is wrapped outside the strong layer (4), the stretching layer (3) and the compression layer (5) to form a basic V-belt; a layer of wear-resistant top glue (1) is arranged on the top of the basic V-belt; The stretching layer raw material components include, by weight: chloroprene rubber 80-90 parts, natural rubber 10-20 parts, zinc oxide 2-5 parts, stearic acid 1-2 parts, magnesium oxide 3-5 parts, silicon dioxide 4-6 parts, methyl methacrylate 4-6 parts, coumarone resin 2-4 parts, carbon black N330 20-25 parts, aromatic oil 6-8 parts, accelerator DM 0.3-0.5 parts, antioxidant RD 2-5 parts, and sulfur 3-5 parts. The compression layer raw material components include, by weight: chloroprene rubber 80-90 parts, natural rubber 10-20 parts, zinc oxide 2-5 parts, stearic acid 1-2 parts, magnesium oxide 3-5 parts, carbon black N774 30-35 parts, plasticizer DBP 2-4 parts, calcium carbonate 1-3 parts, coumarone resin 2-4 parts, heavy oil 5-7 parts, accelerator CZ 0.4-0.6 parts, antioxidant RD 2-5 parts, and sulfur 3-5 parts. The wear-resistant top glue raw material components include, by weight: natural rubber 60-70 parts, chloroprene rubber 30-40 parts, zinc oxide 3-5 parts, stearic acid 2-5 parts, silicon dioxide 5-7 parts, heat-resistant antioxidant RF 1-2 parts, white carbon black 12-14 parts, carbon black N220 15-20 parts, aramid short fiber 2-4 parts, paraffin oil 3-5 parts, accelerator DM 0.6-0.8 parts, adhesive RC 4-6 parts, antioxidant MB 1-3 parts, and sulfur 1-3 parts.

2. The conveyor line of a sandblasting line according to claim 1, characterized in that, The stretching layer raw material components include, by weight: chloroprene rubber 85 parts, natural rubber 15 parts, zinc oxide 3 parts, stearic acid 1 part, magnesium oxide 4 parts, silicon dioxide 5 parts, methyl methacrylate 5 parts, coumarone resin 3 parts, carbon black N330 23 parts, aromatic oil 7 parts, accelerator DM 0.4 parts, antioxidant RD 3 parts, and sulfur 4 parts.

3. The conveyor line of a sandblasting line according to claim 1, characterized in that, The compression layer raw material components include, by weight: chloroprene rubber 85 parts, natural rubber 15 parts, zinc oxide 3 parts, stearic acid 1 part, magnesium oxide 4 parts, carbon black N774 32 parts, plasticizer DBP 3 parts, calcium carbonate 2 parts, coumarone resin 3 parts, heavy oil 6 parts, accelerator CZ 0.5 parts, antioxidant RD 4 parts, and sulfur 4 parts.

4. The conveyor line of a sandblasting line according to claim 1, characterized in that, The wear-resistant top glue raw material component comprises, by weight parts: natural rubber 65 parts, chlorobutyl rubber 35 parts, zinc oxide 4 parts, stearic acid 3 parts, silicon dioxide 6 parts, heat-resistant antioxidant RF 1 part, white carbon black 13 parts, carbon black N220 17 parts, aramid short fiber 3 parts, paraffin oil 4 parts, accelerator DM 0.7 parts, adhesive RC 5 parts, antioxidant MB 2 parts, sulfur 2 parts.

5. A conveyor line for a sandblasting line according to any of claims 1-4, characterized in that, The preparation process of the V-belt comprises the following steps: S1, add chlorobutyl rubber and natural rubber into the internal mixer and plasticize for 100-120 seconds, then add zinc oxide, stearic acid, magnesium oxide, silicon dioxide, methyl methacrylate, coumarone resin, carbon black N330 and aromatic oil, and pressurize and mix for 120-150 seconds, then add accelerator DM, antioxidant RD and sulfur, and mix for 110-130 seconds, control the discharge temperature at 110-120 DEG C, control the thickness of the discharged sheet at 5.0±0.1 mm, and cool the discharged sheet for 8-10 hours to obtain the mixed rubber A for standby; S2, add chlorobutyl rubber and natural rubber into the internal mixer and plasticize for 100-120 seconds, then add zinc oxide, stearic acid, magnesium oxide, carbon black N774, plasticizer DBP, calcium carbonate, coumarone resin and heavy oil, and mix for 100-120 seconds, then add accelerator CZ, antioxidant RD and sulfur, and mix for 90-100 seconds, discharge, control the thickness of the discharged sheet at 6.0±0.1 mm, and cool the discharged sheet for 8-10 hours to obtain the mixed rubber B for standby; S3, take the mixed rubber A prepared in step S1 and extrude into a stretch layer through a cold feeding rubber extruder, and take the mixed rubber B prepared in step S2 and extrude into a compression layer through a cold feeding rubber extruder; S4, take the mixed rubber A prepared in step S1 and gasoline in a 1:1-1.2 ratio, and after the mixture is slurry, dip canvas into the mixture, then take out and dry to obtain dipped canvas for standby; S5, add natural rubber and chlorobutyl rubber into the internal mixer, plasticize for 100-120 seconds, discharge and cool for 6-8 hours to obtain plasticized rubber; S6, add the plasticized rubber, zinc oxide, stearic acid, silicon dioxide, heat-resistant antioxidant RF, white carbon black, carbon black N220, aramid short fiber and paraffin oil into the internal mixer, pressurize and heat to 80-90 DEG C, and mix for 150-160 seconds, then add accelerator DM, adhesive RC, antioxidant MB and sulfur, and mix for 120-140 seconds, control the temperature at 100-120 DEG C, and discharge to obtain mixed rubber C; S7, cut the mixed rubber C, roll and adjust the roll gap to control the thickness of the rubber sheet at 4.0±0.2 mm, and cool the discharged sheet for more than 8-12 hours to obtain wear-resistant top glue for standby; S8, on the rubber coating machine, composite and bond the stretch layer, the compression layer and the strength layer, then transfer to the forming cloth machine, coat the dipped canvas, and then press the wear-resistant top glue on the dipped canvas to obtain a belt blank; S9, install the belt blank on the mold, vulcanize and obtain the product.

6. The conveyor line of a sandblasting line according to claim 5, characterized in that: The thickness of the wear-resistant top glue after vulcanization and bonding is 3.0±0.1 mm.

7. The conveyor line of a sandblasting line according to claim 6, characterized in that: The upper surface of the wear-resistant top glue has a pattern, and the pattern is one of an I-shaped pattern, a chevron-shaped pattern and a cross-shaped pattern.

8. The conveyor line of a sandblasting line according to claim 5, characterized in that: In the step S9, the vulcanization temperature is 130-150 DEG C, and the vulcanization time is 20-30 minutes.

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