Waste rubber powder desulfurization plasticizing device

Abstract

The invention belongs to the technical field of waste rubber treatment and processing equipment, and discloses a waste rubber powder desulfurization and plasticization device which comprises a pretreatment device for screening and pretreating rubber powder, a dynamic desulfurization device for desulfurizing the rubber powder, a cooling device for cooling the desulfurized high-temperature rubber powder and two oil storage tanks, the oil storage tank is divided into a hot oil tank for hot oil circulation and a cold oil tank for cold oil circulation. Waste rubber powder is screened, smashed, screened, cleaned and dried, it is ensured that rubber powder particles entering follow-up treatment are uniform in size, the desulfurization efficiency can be improved, the rubber powder is cooled after desulfurization, the heat dissipation temperature of a semiconductor chilling plate is reasonably utilized to be converted into the rubber powder drying link, and the heat dissipation efficiency of the semiconductor chilling plate is improved. The overall energy consumption can be effectively reduced, and higher energy utilization efficiency is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste rubber processing equipment, and particularly relates to a waste rubber powder desulfurization and plasticization device. Background Art

[0002] A large number of waste rubber products not only occupy a large area and pollute the environment, but also are extremely prone to causing fires, resulting in huge waste of resources. The raw materials for synthetic rubber used to manufacture rubber products such as tires are scarce resources, and the output of natural rubber is difficult to meet the growing demand of the rubber product industry. Therefore, the recycling of waste rubber products has become a very urgent environmental and social issue.

[0003] Currently, the recycling of waste rubber products mostly adopts pyrolysis. For example, in Chinese Patent, the application publication number is CN221876930U, which discloses a waste rubber powder desulfurization and plasticization device. The first feeding pipeline is connected to the hopper. At one end of the hopper in the first feeding pipeline, a first conveying motor is installed. Inside the first feeding pipeline, a first feeding screw is provided. The first feeding screw is connected to the first conveying motor. Inside the first feeding pipeline, between the first feeding screw and the outlet of the first feeding pipeline, a first internal heating pipe is installed. A first heating channel is formed between the first internal heating pipe and the first feeding pipeline. The outside of the first feeding pipeline is installed with a first external heating pipe. After the rubber powder enters the first feeding pipeline from the hopper, it is conveyed by the first feeding screw to the first heating channel. The rubber powder is thinned by the extrusion of the outside of the first internal heating pipe and the inside of the first feeding pipeline in the first heating channel, so that the heat quickly reaches the middle of the rubber powder to achieve uniform heating. The first external heating pipe and the first internal heating pipe heat the rubber powder from the inside and outside, improving the plasticization and desulfurization efficiency of the waste rubber powder.

[0004] However, it does not perform pretreatment work such as screening on the rubber powder before desulfurization. The particle size of the rubber powder is inconsistent, resulting in uneven desulfurization during desulfurization and excessive energy consumption. Summary of the Invention

[0005] In view of the above technical deficiencies, the purpose of the present invention is to provide a waste rubber powder desulfurization and plasticization device, which screens, crushes, sieves, cleans, and dries the waste rubber powder to ensure that the particle size of the rubber powder entering the subsequent treatment is uniform, which is beneficial to improving the desulfurization efficiency and cooling the rubber powder after desulfurization, and reasonably utilizes the temperature of the semiconductor refrigeration sheet for heat dissipation and transfers it to the above-mentioned rubber powder drying link, effectively reducing the overall energy consumption and achieving higher energy utilization efficiency.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a waste rubber powder desulfurization and plasticization device, including:

[0007] Pretreatment device, which screens and pre-treats rubber powder, pulverizes, screens, cleans and dries it;

[0008] Dynamic desulfurization device, which desulfurizes rubber powder, heats, stirs and adds desulfurizing agent;

[0009] Cooling device, which cools down the high-temperature rubber powder after desulfurization, cools it to room temperature to prevent high-temperature oxidation;

[0010] Oil storage tanks, two of which are arranged. One is a hot oil tank for hot oil circulation, and the other is a cold oil tank for cold oil circulation;

[0011] Among them, the hot oil tank is connected to the dynamic desulfurization device to form a circulating oil path, and an electric heating device for heating oil is arranged at the oil outlet end of the hot oil tank;

[0012] The cold oil tank is connected to the cooling device to form a circulating oil path, and a semiconductor refrigeration sheet for reducing the oil temperature is arranged at the oil outlet end of the cold oil tank.

[0013] Preferably, the pretreatment device includes:

[0014] Pulverizing box;

[0015] Cleaning box, arranged below the pulverizing box;

[0016] Among them, two pulverizing rollers are arranged in the pulverizing box, a plurality of spray heads are arranged at the discharge port of the pulverizing box where the cleaning box is located, and a liquid discharge channel for draining water is arranged at the bottom of the cleaning box.

[0017] Preferably, a drying box is also arranged on one side of the cleaning box, and the cleaning box and the drying box are connected through a conveying device;

[0018] The conveying device is a lifting conveyor belt.

[0019] Preferably, several drying devices are arranged in the drying box, and an auxiliary drying mechanism connected to the semiconductor refrigeration sheet is also arranged on the drying box.

[0020] Preferably, the drying device includes:

[0021] Several drying lamps, and all the drying lamps are arranged on the inner wall of the drying box.

[0022] Preferably, the auxiliary drying mechanism includes:

[0023] Air duct;

[0024] Fan, arranged in the air duct;

[0025] Among them, the air inlet end of the air duct is connected to the hot end of the semiconductor refrigeration sheet, and the air outlet end of the air duct is arranged on the drying box.

[0026] Preferably, the dynamic desulfurization device includes:

[0027] A first housing;

[0028] A first conveying roller disposed at the center of the first housing;

[0029] Wherein, a spiral heating wall one is arranged on the inner wall of the first housing, and a spiral heating wall two is arranged on the surface of the first conveying roller.

[0030] Preferably, a spiral rubber powder conveying cavity is formed between the heating wall one and the heating wall two;

[0031] Thermal oil pipes connected to a thermal oil tank and forming a circulation pipeline are arranged in both the heating wall one and the heating wall two.

[0032] Preferably, the cooling device includes:

[0033] A second housing;

[0034] A second conveying roller disposed at the center of the second housing;

[0035] Wherein, cold oil pipes connected to a cold oil tank and forming a circulation pipeline are arranged in both the second housing and the second conveying roller.

[0036] Preferably, a chemical dosing port 8 for adding desulfurizing agent is further arranged at the feeding end of the dynamic desulfurization device.

[0037] The beneficial effects of the present invention are as follows:

[0038] In the present invention, the waste rubber powder is screened, crushed, sieved, cleaned and dried by a pretreatment device, which ensures that the rubber powder particles entering the subsequent treatment have uniform particle size and is beneficial to improving the desulfurization efficiency.

[0039] In the present invention, thermal oil pipes connected to a thermal oil tank and forming a circulation pipeline are arranged in both the heating wall one and the heating wall two, avoiding local overheating or underheating. Through the hot oil circulation system, precise temperature control of the heating wall can be achieved, further improving the desulfurization effect.

[0040] In the present invention, cold oil pipes are arranged in both the second housing and the second conveying roller at the same time, greatly increasing the cooling area and improving the cooling efficiency. At the same time, the rotation of the second conveying roller can promote the turning of the rubber powder, further improving the cooling effect.

[0041] In the present invention, by transferring the temperature dissipated by the semiconductor refrigeration sheet to the rubber powder drying link, the overall energy consumption can be effectively reduced, achieving higher energy utilization efficiency. Description of the Drawings

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0043] Figure 1 This is a schematic structural diagram of a desulfurization and plasticization device for waste rubber powder provided by an embodiment of the present invention.

[0044] Figure 2 This is a schematic structural diagram of a dynamic desulfurization device of a desulfurization and plasticization device for waste rubber powder provided by an embodiment of the present invention.

[0045] Figure 3 This is a schematic structural diagram of a cooling device of a desulfurization and plasticization device for waste rubber powder provided by an embodiment of the present invention.

[0046] Explanation of reference numerals:

[0047] 1. Hot oil tank; 2. Cold oil tank; 3. Electric heating device; 4. Semiconductor refrigeration sheet; 5. Crushing box; 6. Cleaning box; 7. Drainage channel; 8. Chemical addition port; 9. Lifting conveyor belt; 10. Drying box; 11. Crushing roller; 12. Drying lamp; 13. Air duct; 14. Fan; 15. First housing; 16. First conveying roller; 17. First heating wall; 18. Second heating wall; 19. Conveying cavity; 20. Hot oil pipe; 21. Second housing; 22. Second conveying roller; 23. Cold oil pipe;

[0048] a. Sprinkler head. Detailed implementation manners

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0050] Embodiment 1:

[0051] As Figures 1 to 3 shown, the present invention provides a desulfurization and plasticization device for waste rubber powder, including a pretreatment device for screening and preprocessing rubber powder, a dynamic desulfurization device for desulfurizing rubber powder, a cooling device for cooling and reducing the temperature of the high-temperature rubber powder after desulfurization, and two storage oil tanks. The storage oil tanks are divided into a hot oil tank 1 for hot oil circulation and a cold oil tank 2 for cold oil circulation;

[0052] Among them, a chemical dosing port 8 for adding desulfurizing agent is also arranged at the feeding end of the dynamic desulfurization device. The desulfurizing agent is added through the chemical dosing port 8. The arrangement of the chemical dosing port 8 can more precisely control the addition amount of the desulfurizing agent, thereby improving the desulfurization effect and efficiency.

[0053] Among them, the hot oil tank 1 is connected to the dynamic desulfurization device to form a circulating oil path, and an electric heating device 3 for heating oil is arranged at the oil outlet end of the hot oil tank 1.

[0054] The cold oil tank 2 is connected to the cooling device to form a circulating oil path, and a semiconductor refrigerating sheet 4 for reducing the oil temperature is arranged at the oil outlet end of the cold oil tank 2.

[0055] Among them, the pretreatment device refers to the equipment for preliminarily treating the rubber powder, and specifically, procedures such as screening, crushing, sieving, cleaning, and drying can be adopted to achieve it.

[0056] Among them, the dynamic desulfurization device refers to the equipment for desulfurizing the rubber powder by heating and stirring and adding desulfurizing agent, and specifically, a spiral conveying structure and a heating wall can be adopted to achieve it.

[0057] Among them, the cooling device refers to the equipment for cooling the high-temperature rubber powder after desulfurization to room temperature, and specifically, a cold oil circulation system can be adopted to achieve it.

[0058] Among them, the oil storage tank refers to the container for storing and circulating hot oil or cold oil, and specifically, two independent tanks, namely the hot oil tank 1 and the cold oil tank 2, can be adopted to achieve it.

[0059] The core innovation point of this application is to propose a complete desulfurization and plasticization device for waste rubber powder, which includes four main links: pretreatment, dynamic desulfurization, cooling, and oil storage circulation. Through pretreatment, the rubber powder particles are ensured to be uniform. Dynamic desulfurization improves the desulfurization efficiency. Cooling prevents high-temperature oxidation. The double oil storage tank system realizes the efficient utilization and precise control of heat energy. This design effectively solves the problems of uneven desulfurization and excessive energy consumption in the existing technology.

[0060] Working principle:

[0061] First of all, the waste rubber powder is screened, crushed, sieved, cleaned, and dried through the pretreatment device. This step ensures that the rubber powder particles entering the subsequent treatment have uniform particle sizes, which is beneficial to improving the desulfurization efficiency. The pretreated rubber powder enters the dynamic desulfurization device, where it is heated and stirred and desulfurizing agent is added. The dynamic desulfurization device obtains heat through the circulating oil path formed with the hot oil tank 1, and the electric heating device 3 precisely controls the oil temperature to ensure the temperature requirement during the desulfurization process. After desulfurization is completed, the high-temperature rubber powder enters the cooling device, forms a circulating oil path with the cold oil tank 2, and is quickly cooled to room temperature to prevent high-temperature oxidation. The semiconductor refrigerating sheet 4 at the oil outlet end of the cold oil tank 2 further reduces the oil temperature and improves the cooling efficiency.

[0062] In the whole system, the hot oil tank 1 and the cold oil tank 2 respectively form independent circulating oil circuits with the dynamic desulfurization device and the cooling device, achieving efficient utilization of thermal energy. The setting of the electric heating device 3 and the semiconductor refrigeration sheet 4 enables the system to accurately control the oil temperature, which not only meets the temperature requirements of the desulfurization process but also realizes rapid cooling, reducing energy waste. This design not only improves the desulfurization efficiency but also reduces the overall energy consumption.

[0063] Embodiment 2:

[0064] Based on Embodiment 1, there is a problem that the desulfurization is uneven due to the inconsistent particle size of the rubber powder.

[0065] In response to this, the present application further proposes that the pretreatment device includes a crushing box 5 and a cleaning box 6 arranged below the crushing box 5. This arrangement can utilize the gravity effect to make the crushed rubber particles naturally fall into the cleaning box 6. Two crushing rollers 11 are arranged in the crushing box 5. A plurality of spray nozzles a are arranged at the discharge port of the crushing box 5 where the cleaning box 6 is located. These spray nozzles a can be evenly distributed to ensure comprehensive cleaning of the falling rubber particles. A liquid discharge channel 7 for draining water is arranged at the bottom of the cleaning box 6. This design can timely discharge the wastewater generated during the cleaning process to prevent the accumulation of wastewater from affecting the cleaning effect. The liquid discharge channel 7 can be designed as an inclined structure to facilitate the rapid discharge of wastewater. In addition, a filtering device can be installed on the liquid discharge channel 7 to prevent the rubber particles from flowing away with the wastewater.

[0066] The design of this pretreatment device can effectively solve the problem of inconsistent particle size of the rubber powder and remove the dirt and impurities on the surface. This not only improves the efficiency of the subsequent desulfurization process but also can reduce the usage amount of the desulfurizing agent and lower the production cost. At the same time, the cleaning process can also remove the oil stains and other organic matters on the rubber surface, which helps to improve the quality of the final product.

[0067] Furthermore, to avoid the problem of high water content in the rubber powder particles after cleaning, a drying box 10 is also arranged on one side of the cleaning box 6. The cleaning box 6 and the drying box 10 are connected through a conveying device. Among them, the conveying device is a lifting conveyor belt 9, which can convey the cleaned rubber powder particles from the cleaning box 6 to the drying box 10 for drying treatment.

[0068] Specifically, a number of drying devices are arranged in the drying box 10, and an auxiliary drying mechanism connected to the semiconductor refrigeration sheet 4 is also arranged on the drying box 10.

[0069] Among them, the drying device includes a number of drying lamps 12, and all the drying lamps 12 are arranged on the inner wall of the drying box 10.

[0070] Among them, the auxiliary drying mechanism includes an air duct 13 and a fan 14 arranged in the air duct 13;

[0071] Among them, the air inlet end of the air duct 13 is connected to the hot end of the semiconductor refrigeration chip 4, and the air outlet end of the air duct is arranged on the drying oven 10, which can forcibly suck hot air from the air inlet end of the air duct 13 and blow it to the drying oven 10 through the air outlet end. Thus, hot air is introduced into the drying oven 10 to accelerate the drying process of the rubber powder. The rotation speed of the fan 14 can be adjusted according to the drying demand, for example, multiple gears of speed or stepless speed regulation can be set. The air outlet end of the air duct 13 can be designed as multiple small holes or slits, evenly distributed on the top or side of the drying oven 10 to ensure that the hot air can be evenly blown onto the rubber powder. The attached drawing is at.

[0072] After being crushed and cleaned, the rubber powder particles can be directly transported to the drying oven 10 for drying treatment without manual intervention, improving the production efficiency. At the same time, this design also facilitates the layout optimization of the entire pretreatment system, and the relative positions of the cleaning tank 6 and the drying oven 10 can be flexibly adjusted according to the actual production requirements.

[0073] The waste rubber powder desulfurization and plasticization device of the present application can achieve efficient drying in the pretreatment stage, providing rubber powder raw materials with higher dryness for the subsequent desulfurization process. Compared with the traditional single drying method, the dual drying mechanism of the present application can further reduce the moisture content of the rubber powder, significantly improving the efficiency of the subsequent desulfurization process. At the same time, due to the full utilization of the heat dissipation of the semiconductor refrigeration chip 4, the overall energy consumption can be effectively reduced, achieving higher energy utilization efficiency.

[0074] Embodiment Three:

[0075] Based on Embodiment Two, in order to improve the desulfurization effect.

[0076] The present application further proposes that the dynamic desulfurization device includes a housing one 15 and a conveying roller one 16 arranged at the center of the housing one 15. A spiral heating wall one 17 is arranged on the inner wall of the housing one 15, and a spiral heating wall two 18 is arranged on the surface of the conveying roller one 16. A spiral rubber powder conveying cavity 19 is formed between the heating wall one 17 and the heating wall two 18. This structural design can significantly improve the efficiency and uniformity of the desulfurization process;

[0077] Hot oil pipes 20 connected to the hot oil tank 1 and forming a circulation pipeline are arranged in both the heating wall one 17 and the heating wall two 18. The spiral conveying cavity 19 can extend the residence time of the rubber powder in the device, enabling it to fully contact the heat source.

[0078] At the same time, the setting of the hot oil pipes 20 can ensure the uniform temperature of the heating wall, avoiding local overheating or underheating phenomena. Through the hot oil circulation system, precise temperature control of the heating wall can be achieved, further improving the desulfurization effect.

[0079] Furthermore, in order to avoid high-temperature oxidation of rubber powder after desulfurization, the present application further proposes a cooling device with a structure similar to that of a dynamic desulfurization device, and the specific cooling device includes a shell 21 and a conveying roller 22. The shell 21 and the conveying roller 22 are both provided with a cold oil pipe 23 connected to the cold oil tank 2 and forming a circulation pipeline. The cold oil pipe 23 is arranged in the shell 21 and the conveying roller 22, and forms a circulation pipeline with the cold oil tank 2, which can effectively improve the cooling efficiency. The cold oil circulates in the cold oil pipe 23, which can quickly take away the heat of the rubber powder and achieve rapid and uniform cooling.

[0080] By arranging the cooling oil pipe 23 in the shell 21 and the conveying roller 22 at the same time, the cooling area is greatly increased and the cooling efficiency is improved. Referring to the structure of the dynamic desulfurization device, in the cooling device, the rubber powder conveying cavity 19 is arranged between the shell 21 and the conveying roller 22.

[0081] Secondly, the design of the conveying roller 22 not only plays a conveying role, but also promotes the turning of the rubber powder to make the cooling more uniform.

[0082] Again, the design of the cold oil circulation system makes the cooling process more controllable, and the cold oil temperature and flow rate can be adjusted according to actual needs.

[0083] Finally, this design has a simple structure, is easy to maintain, and is suitable for long-term continuous operation.

[0084] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A waste rubber powder desulfurization and plasticization device, characterized in that, Including: A pretreatment device for screening and pretreating rubber powder, crushing, screening, cleaning and drying it; A dynamic desulfurization device for desulfurizing rubber powder, heating, stirring and adding a desulfurizing agent; A cooling device for cooling and lowering the temperature of the high-temperature rubber powder after desulfurization, cooling it to room temperature to prevent high-temperature oxidation; An oil storage tank, with two oil storage tanks arranged, one being a hot oil tank (1) for hot oil circulation and the other being a cold oil tank (2) for cold oil circulation; Among them, the hot oil tank (1) is connected to the dynamic desulfurization device to form a circulating oil path, and an electric heating device (3) for heating oil is arranged at the oil outlet end of the hot oil tank (1); The cold oil tank (2) is connected to the cooling device to form a circulating oil path, and a semiconductor refrigerating sheet (4) for lowering the oil temperature is arranged at the oil outlet end of the cold oil tank (2).

2. The waste rubber powder desulfurization and plasticization device according to claim 1, characterized in that, The pretreatment device includes: A crushing box (5); A cleaning box (6) arranged below the crushing box (5); Among them, two crushing rollers (11) are arranged in the crushing box (5), a plurality of spray heads are arranged at the discharge port of the crushing box (5) where the cleaning box (6) is located, and a liquid discharge channel (7) for draining water is arranged at the bottom of the cleaning box (6).

3. The waste rubber powder desulfurization and plasticization device according to claim 2, wherein, A drying box (10) is also arranged on one side of the cleaning box (6), and the cleaning box (6) and the drying box (10) are connected through a conveying device; The conveying device is a lifting conveyor belt (9).

4. The desulfurization and plasticization device for waste rubber powder as described in claim 3, wherein, A number of drying devices are arranged in the drying box (10), and an auxiliary drying mechanism connected to the semiconductor refrigerating sheet (4) is also arranged on the drying box (10).

5. The desulfurization and plasticization device for waste rubber powder as described in claim 4, characterized in that, The drying device includes: A number of drying lamps (12), and all the drying lamps (12) are arranged on the inner wall of the drying box (10).

6. The desulfurization and plasticization device for waste rubber powder as described in claim 5, characterized in that, The auxiliary drying mechanism includes: An air duct (13); A blower (14) arranged in the air duct (13); Among them, the air inlet end of the air duct (13) is connected to the hot end of the semiconductor refrigerating sheet (4), and the air outlet end of the air duct is arranged on the drying box (10).

7. The desulfurization and plasticization device for waste rubber powder as described in claim 1, characterized in that, The dynamic desulfurization device includes: A housing one (15); A conveying roller one (16) arranged at the center of the housing one (15); Among them, a spiral heating wall one (17) is arranged on the inner wall of the housing one (15), and a spiral heating wall two (18) is arranged on the surface of the conveying roller one (16).

8. The desulfurization and plasticization device for waste rubber powder according to claim 7, characterized in that, A spiral rubber powder conveying cavity (19) is formed between the heating wall one (17) and the heating wall two (18); Hot oil pipes (20) connected to the hot oil tank (1) to form a circulating pipeline are arranged in both the heating wall one (17) and the heating wall two (18).

9. The desulfurization and plasticization device for waste rubber powder as described in claim 1, characterized in that, The cooling device includes: A housing two (21); A conveying roller two (22) arranged at the center of the housing two (21); Among them, cold oil pipes (23) connected to the cold oil tank (2) to form a circulating pipeline are arranged in both the housing two (21) and the conveying roller two (22).

10. A waste rubber powder desulfurization and plasticization device according to claim 1, characterized in that, A medicine adding port (8) for adding a desulfurizing agent is also arranged at the feeding end of the dynamic desulfurization device.

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