Waste rubber treatment device and method

By mixing rubber powder and resin powder in the waste rubber treatment device and rolling and grinding in the roller grinder, the problem of poor grinding effect caused by rubber powder viscosity is solved, and efficient fine powder production is achieved.

CN120503349APending Publication Date: 2025-08-19LUHE ZHONGYI ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Application Number
CN202510855231.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-25
Publication Date
2025-08-19

AI Technical Summary

Technical Problem

During the process of waste rubber treatment, the rubber oil produced by the thermal decomposition of the rubber leads to poor grinding effect, and the rubber powder is prone to sticking into a ball, making it difficult to effectively grind into fine powder.

Method used

Using a waste rubber treatment device, including a first loading assembly, a second loading assembly, a mixing tank and a rolling mill, a completely covered composite is formed by mixing rubber powder and resin powder in the mixing tank and rolling grinding in the rolling mill.

Benefits of technology

It effectively solves the viscosity problem of rubber powder, improves grinding efficiency, and can better grind the rubber powder into small-grained rubber powder.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a waste rubber treatment device and method.The waste rubber treatment device comprises a first feeding assembly, a second feeding assembly, a stirring tank and a double-roller grinding machine; the first feeding assembly is connected with the stirring tank, the second feeding assembly is connected with the stirring tank, and the stirring tank is connected with the double-roller grinding machine through the first spiral conveyor. A first roller and a second roller are arranged in the roller grinding machine, and a first roller shaft and a second roller shaft are oppositely arranged. The waste rubber treatment method comprises the following steps that rubber powder is conveyed into the stirring tank through the first feeding assembly; resin powder is conveyed into the stirring tank through the second feeding assembly; fully stirring the rubber powder and the resin powder in the stirring tank; the stirred mixture of the rubber powder and the resin powder is conveyed into the double-roller grinding machine through the first spiral conveyor; and the rubber powder and resin powder mixture is ground into a rubber powder compound with smaller particle size in the double-roller grinder.
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Description

Technical Field

[0001] The present invention relates to the technical field of waste rubber processing, and in particular to a waste rubber processing device and method. Background Art

[0002] As people's living standards gradually improve, more and more rubber products are used in daily life, which will generate a lot of waste rubber. Therefore, the treatment of waste rubber becomes particularly important.

[0003] In the waste rubber processing process, the waste rubber blocks are usually crushed into coarse rubber powder, which is then further ground into fine rubber powder of different particle sizes. However, when the coarse rubber powder is ground in a grinder, the rubber will decompose into rubber oil during thermal decomposition. The rubber oil has a certain viscosity, which causes the rubber powder to easily stick together. In other words, the rubber powder easily clumps together, resulting in poor grinding effect. Summary of the Invention

[0004] Based on this, it is necessary to provide a waste rubber processing device and method.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a waste rubber processing device, comprising: a first feeding assembly, a second feeding assembly, a stirring tank and a double-roller grinder; the first feeding assembly is connected to the stirring tank, the second feeding assembly is connected to the stirring tank, and the stirring tank is connected to the double-roller grinder through a first screw conveyor; a first roller and a second roller are also provided in the double-roller grinder, and the first roller shaft and the second roller shaft are arranged opposite to each other.

[0006] In one embodiment, the diameter of the first roller in the roller grinding mill is larger than the diameter of the second roller.

[0007] In one embodiment, the distance between the first roller and the second roller is in the range of 1-10 mm.

[0008] In one embodiment, grooves are formed on the surface of the first roller.

[0009] In one embodiment, the surface of the second roller is protruded with a plurality of grinding knives.

[0010] In one embodiment, a material checking port is provided at one end of the first screw conveyor close to the stirring tank, and a cover is provided on the side wall of the material checking port, and the cover movably seals the material checking port.

[0011] In one embodiment, the first feeding assembly includes a first storage bin and a second screw conveyor, and the first storage bin is connected to the top tank opening of the mixing tank through the second screw conveyor.

[0012] In one embodiment, the second feeding assembly includes a second storage bin and a third screw conveyor, and the second storage bin is connected to the top tank opening of the mixing tank through the third screw conveyor.

[0013] In one embodiment, the stirring tank has a tank body and a bottom, the tank body of the stirring tank is cylindrical, the bottom of the stirring tank is in an inverted cone shape, the inlet of the stirring tank is opened at the end of the tank body of the stirring tank away from the bottom, the outlet of the stirring tank is opened at the conical tip of the bottom of the stirring tank, and the side wall of the outlet of the stirring tank is connected to the first screw conveyor.

[0014] A method for processing waste rubber, using the waste rubber processing device described in any one of the above embodiments to complete the following method steps, including:

[0015] Using the first feeding assembly to transport the rubber powder into the mixing tank;

[0016] Using the second feeding assembly to transport the resin powder into the mixing tank;

[0017] Fully stirring the rubber powder and the resin powder in the stirring tank;

[0018] transporting the stirred rubber powder and resin powder mixture to the roller grinder via the first screw conveyor;

[0019] In the double-roller grinder, the mixture of rubber powder and resin powder is ground by rolling to form a rubber powder composite in which the rubber powder is completely covered with the resin powder.

[0020] The present invention provides a waste rubber processing device and method comprising a first feeding assembly, a second feeding assembly, and a mixing tank. The first and second feeding assemblies are respectively used to transport rubber powder and resin powder into the mixing tank, where the rubber powder and resin powder are then thoroughly mixed and transported to a double-roller grinder. The rubber powder and resin powder mixture is then compacted and ground in the double-roller grinder. The addition of resin powder increases friction between the rubber powder and the first and second rollers. Furthermore, the rubber oil produced during the grinding of the rubber powder adsorbs the resin powder onto the rubber powder, forming a completely coated composite, thereby resolving the rubber's stickiness problem and enabling the rubber powder to be ground into smaller particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic structural diagram of a waste rubber processing device according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic structural diagram of a first roller and a second roller according to an embodiment of the present invention;

[0024] Figure 3 A schematic flow chart of a method for treating waste rubber according to an embodiment of the present invention.

[0025] In the accompanying drawings, 100 is a waste rubber processing device; 110 is a first feeding component; 111 is a first storage bin; 112 is a second screw conveyor; 120 is a second feeding component; 121 is a second storage bin; 122 is a third screw conveyor; 130 is a mixing tank; 140 is a double-roller grinder; 141 is a first roller; 142 is a second roller; 143 is a groove; 144 is a grinding knife; 150 is a first screw conveyor; 151 is a material inspection port. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] In one embodiment, Figure 1 As shown, a waste rubber processing device 100 includes: a first feeding component 110, a second feeding component 120, a stirring tank 130 and a roller grinder 140; the first feeding component 110 is connected to the stirring tank 130, the second feeding component 120 is connected to the stirring tank 130, and the stirring tank 130 is connected to the roller grinder 140 through a first screw conveyor 150; a first roller 141 and a second roller 142 are also provided in the roller grinder 140, and the first roller shaft and the second roller shaft are arranged opposite to each other.

[0030] Specifically, the first feeding assembly 110, the second feeding assembly 120, and the mixing tank 130 are provided. The first feeding assembly 110 and the second feeding assembly 120 are respectively used to transport rubber powder and resin powder into the mixing tank 130. The rubber powder and resin powder are then thoroughly mixed in the mixing tank 130 and transported to the roller grinder 140. The rubber powder and resin powder mixture is rolled and ground in the roller grinder 140. The addition of resin powder increases the friction between the rubber powder and the first roller 141 and the second roller 142. At the same time, the rubber oil produced during the grinding of the rubber powder absorbs the resin powder onto the rubber powder, forming a completely coated compound, which solves the problem of rubber stickiness and enables the rubber powder to be better ground into small particles.

[0031] In order to grind the rubber powder more fully, in one embodiment, as Figure 2 As shown, the diameter of the first roller 141 in the roller grinder 140 is larger than the diameter of the second roller 142. Specifically, by setting the diameter of the first roller 141 larger than the diameter of the second roller 142, the area of the rubber powder contacting the first roller 141 is increased. At the same time, the rotation speed of the first roller 141 is adjusted to be slower than the rotation speed of the second roller 142, thereby grinding the rubber powder more thoroughly.

[0032] In one embodiment, the diameter of the first roller 141 is 560 mm, and the diameter of the second roller 142 is 510 mm. At this time, the rotational speed ratio of the first roller 141 to the second roller 142 is 1:1.28.

[0033] To produce rubber powder of varying particle sizes, in one embodiment, the distance between the first roller 141 and the second roller 142 is set to a range of 1-10 mm. Specifically, the distance between the first roller 141 and the second roller 142 is adjustable within a range of 1-10 mm. By adjusting the distance between the first roller 141 and the second roller 142, rubber powder of varying particle sizes can be produced as desired.

[0034] In order to fully grind the rubber powder, in one embodiment, as Figure 2 As shown, the surface of the first roller 141 is provided with grooves 143. Specifically, the grooves 143 on the surface of the first roller 141 increase the contact area between the first roller 141 and the rubber powder, thereby increasing friction. Furthermore, the grooves 143 on the first roller 141 primarily enhance the grinding efficiency, processing quality, and operational stability of the equipment by strengthening material gripping, improving grinding effects, enhancing heat dissipation, reducing material adhesion, optimizing material flow, and increasing the strength of the first roller 141.

[0035] In order to fully grind the rubber powder, in one embodiment, as Figure 2 As shown, the second roller 142 is provided with a plurality of grinding blades 144 protruding from its surface. Specifically, the plurality of grinding blades 144 protruding from the surface of the second roller 142 are evenly distributed on the surface of the second roller 142. This arrangement enhances grinding capacity, improves processing efficiency, and optimizes grinding results.

[0036] In order to check whether the rubber powder and the resin powder are mixed evenly, in one embodiment, Figure 1 As shown, a material inspection port 151 is provided at one end of the first screw conveyor 150 near the mixing tank 130. A cover is provided on the sidewall of the material inspection port 151, and the cover is movable to seal the material inspection port 151. Specifically, by providing the material inspection port 151 on the first screw conveyor 150, after the rubber powder and resin powder are mixed in the mixing tank 130, the cover can be opened to allow the mixed rubber powder and resin powder to partially flow out of the material inspection port 151, thereby facilitating inspection of whether the rubber powder and resin powder are evenly mixed.

[0037] To better transport the rubber powder into the mixing tank 130, in one embodiment, the first loading assembly 110 includes a first storage bin 111 and a second screw conveyor 112. The first storage bin 111 is connected to the top opening of the mixing tank 130 via the second screw conveyor 112. Specifically, the first storage bin 111 is used to store the rubber powder, and the second screw conveyor 112 is used to transport the rubber powder in the first storage bin 111 into the mixing tank 130. By adjusting the motor of the second screw conveyor 112 to a uniform and appropriate speed, the amount of rubber powder transported into the mixing tank 130 can be controlled.

[0038] To better transport the resin powder into the mixing tank 130, in one embodiment, the second loading assembly 120 includes a second storage bin 121 and a third screw conveyor 122. The second storage bin 121 is connected to the top opening of the mixing tank 130 via the third screw conveyor 122. Specifically, the second storage bin 121 is used to store the resin powder, and the third screw conveyor 122 can be used to transport the resin powder in the second storage bin 121 into the mixing tank 130. By adjusting the motor of the third screw conveyor 122 to a uniform and appropriate speed, the amount of resin powder transported into the mixing tank 130 can be controlled.

[0039] In order to mix the rubber powder and the resin powder more evenly, in one embodiment, Figure 1 As shown, the mixing tank 130 has a tank body and a bottom. The tank body of the mixing tank 130 is cylindrical, and the bottom of the mixing tank 130 is in the shape of an inverted cone. The inlet of the mixing tank 130 is located at the end of the tank body away from the bottom of the mixing tank 130, and the outlet of the mixing tank 130 is located at the tip of the cone at the bottom of the mixing tank 130. The side wall of the outlet of the mixing tank 130 is connected to the first screw conveyor 150. Specifically, a stirring rod is provided in the mixing tank 130, and the stirring rod is used to stir the rubber powder and resin powder in the mixing tank 130. By configuring the bottom of the mixing tank 130 into an inverted cone and configuring the outlet of the mixing tank 130 at the tip of the cone at the bottom of the mixing tank 130, the discharge speed can be controlled, so that the rubber powder and resin powder in the mixing tank 130 are fully stirred before being transported out of the mixing tank 130.

[0040] In one embodiment, Figure 3 As shown, a method for processing waste rubber is performed using the waste rubber processing device described in any of the above embodiments to complete the following method steps, including:

[0041] Step 210: using the first feeding assembly to transport the rubber powder into the mixing tank;

[0042] Step 220: using the second feeding assembly to transport the resin powder into the mixing tank;

[0043] Step 230, fully stirring the rubber powder and the resin powder in the stirring tank;

[0044] Step 240 , conveying the stirred rubber powder and resin powder mixture to the roller grinder via the first screw conveyor;

[0045] Step 250 : Grind the rubber powder and resin powder mixture in the roller grinder by rolling to form a rubber powder composite in which the rubber powder is completely coated with the resin powder.

[0046] Specifically, grinding the rubber powder by the above method can increase the friction between the rubber powder and the first roller and the second roller, while reducing the viscosity between the rubber powders, thereby better grinding the rubber powder into rubber powder with small particle size.

[0047] Compared with the prior art, the present invention has at least the following advantages: by rolling and grinding the mixture of rubber powder and resin powder in a double-roll grinder, the friction between the rubber powder and the first roller and the second roller is increased due to the addition of resin powder, while the viscosity between the rubber powder is reduced, thereby better grinding the rubber powder into rubber powder with smaller particle size.

[0048] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-described embodiments merely represent several embodiments of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A waste rubber processing device, characterized in that: include: a first feeding assembly, a second feeding assembly, a mixing tank and a roller grinder; The first feeding assembly is connected to the stirring tank, the second feeding assembly is connected to the stirring tank, and the stirring tank is connected to the roller grinder via a first screw conveyor; The roller grinding machine is further provided with a first roller and a second roller, and the first roller shaft and the second roller shaft are arranged opposite to each other.

2. The waste rubber processing device according to claim 1, characterized in that: The diameter of the first roller in the roller grinding mill is larger than the diameter of the second roller.

3. The waste rubber processing device according to claim 1, characterized in that: The distance between the first roller and the second roller is in the range of 1-10 mm.

4. The waste rubber processing device according to claim 1, characterized in that: The surface of the first roller is provided with grooves.

5. The waste rubber processing device according to claim 1, characterized in that: The surface of the second roller is convexly provided with a plurality of grinding knives.

6. The waste rubber processing device according to claim 1, characterized in that: A material checking port is provided at one end of the first screw conveyor close to the stirring tank, and a cover is provided on the side wall of the material checking port, and the cover movably seals the material checking port.

7. The waste rubber processing device according to claim 1, characterized in that: The first feeding assembly includes a first storage bin and a second screw conveyor, and the first storage bin is connected to the top barrel opening of the mixing tank through the second screw conveyor.

8. The waste rubber processing device according to claim 1, characterized in that: The second feeding assembly includes a second storage bin and a third screw conveyor, and the second storage bin is connected to the top tank opening of the mixing tank through the third screw conveyor.

9. The waste rubber processing device according to claim 1, characterized in that: The stirring tank has a tank body and a bottom, the tank body of the stirring tank is cylindrical, the bottom of the stirring tank is in an inverted cone shape, the inlet of the stirring tank is opened at the end of the tank body away from the bottom of the stirring tank, the outlet of the stirring tank is opened at the conical tip of the bottom of the stirring tank, and the side wall of the outlet of the stirring tank is connected to the first screw conveyor.

10. A method for processing waste rubber, characterized in that: The waste rubber processing device according to any one of claims 1 to 9 is used to complete the following method steps, including: Using the first feeding assembly to transport the rubber powder into the mixing tank; Using the second feeding assembly to transport the resin powder into the mixing tank; Fully stirring the rubber powder and the resin powder in the stirring tank; transporting the stirred rubber powder and resin powder mixture to the roller grinder via the first screw conveyor; In the double-roller grinder, the mixture of rubber powder and resin powder is ground by rolling to form a rubber powder composite in which the rubber powder is completely covered with the resin powder.