Device for vulcanizing rubber

Abstract

The utility model relates to the technical field of oxygen exhaust of vulcanizing tanks, in particular to a device for vulcanizing rubber, which comprises a base, a tank body is fixedly mounted at the upper end of the base, an inner container is fixedly mounted in the tank body through a support, and a gap is reserved between the outer ring wall of the inner container and the inner ring wall of the tank body. According to the scheme, through the inner container, the tube base and the tube sleeve which are made of ceramic materials, heat loss of the electric heating tubes is effectively reduced, the heating efficiency is improved, the electric heating tubes are distributed at equal intervals along the 180-degree cambered surface, it is ensured that heat evenly covers rubber objects on the object placing table, local overheating or insufficient heating is avoided, meanwhile, the temperature detector is linked with the electric heating tubes, constant-temperature heating is achieved, and the service life of the electric heating tubes is prolonged. The temperature stability in the vulcanization process is guaranteed, so that the rubber vulcanization quality and efficiency are improved, rapid vacuumizing and oxygen residue reduction can be achieved through the air pump and the exhaust pipe, nitrogen is injected through the nitrogen conveying connector, an inert environment is formed, and the oxidation reaction in the rubber vulcanization process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of oxygen venting technology for vulcanizing tanks, and in particular to a device for vulcanizing rubber. Background Technology

[0002] Vulcanization is a key chemical reaction process in rubber processing. Through heating and pressurization, rubber molecules cross-link, thereby improving the physical and chemical properties of the rubber. Vulcanizing tanks are one of the main pieces of equipment for this process and are widely used in the production of various rubber products such as tires, hoses, and belts.

[0003] The presence of oxygen during vulcanization may adversely affect the properties of rubber.

[0004] Limitations of traditional vulcanization processes:

[0005] During conventional vulcanization, contact between rubber products and oxygen can lead to surface oxidation, forming an oxide film (such as the "blooming" phenomenon), which affects crosslinking efficiency and reduces physical properties (such as tear resistance and elasticity). Especially in thick-walled or complex structured products, residual oxygen can easily cause uneven vulcanization. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by providing a device for the vulcanization treatment of rubber.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] Design an apparatus for rubber vulcanization treatment, including a base, a tank body fixedly installed on the upper end of the base, an inner liner fixedly installed inside the tank body by a bracket, a gap being provided between the outer ring wall of the inner liner and the inner ring wall of the tank body, and a number of tube seats fixedly installed on one end of the inner wall of the inner sleeve by a bracket, the number of tube seats being equidistantly distributed along the arc surface.

[0009] An electric heating tube is inserted inside the tube seat. A sealing plate is fixedly installed at one end of the tank. A tube sleeve is fixedly inserted through the inside of the sealing plate. The inner liner, tube seat, and tube sleeve are all made of ceramic material. The surface of the electric heating tube is slidably fitted with the inside of the tube sleeve. The wiring end of the electric heating tube extends outward through the inside of the tube sleeve.

[0010] The tank is equipped with a shelf inside, which extends through the inner liner. The shelf is rectangular in structure, and the lower end of the shelf is supported by legs at the four corners of the tank.

[0011] An air pump is fixedly installed on one side of the upper end of the tank by a bracket. The air pump's air inlet flange is connected to an air extraction pipe, and the end of the air extraction pipe away from the air pump is fixed inside the tank.

[0012] In detail, a nitrogen delivery interface is fixedly installed at the upper end of the tank away from the gas pump. A valve is provided on the surface of the nitrogen delivery interface, and the valve core of the valve is embedded inside the nitrogen delivery interface.

[0013] In detail, an air circulation interface is fixed through the center of the sealing plate, and a second valve is provided on the surface of the air circulation interface, with the valve core of the second valve embedded inside the air circulation interface.

[0014] In detail, the air circulation interface has a transition interface connected to the flange at the end away from the sealing plate, and a channel is welded and fixed at the other end of the transition interface. The interior of the channel is connected to the interior of the transition interface.

[0015] In detail, several sets of fins are fixedly installed on the inner wall of the channel, and bent pipes are fixedly installed through the interior of several sets of fins. The two ends of the bent pipes are respectively a cold water inlet and a cold water outlet, and both the cold water inlet and the cold water outlet extend outward through the lower end of the channel.

[0016] In detail, the opening of the can is covered by a cover plate, and a handle is fixed to the end of the cover plate away from the can.

[0017] In detail, a temperature detector, a pressure detector, and an oxygen concentration detector are sequentially installed through the surface of the cover plate.

[0018] In detail, threaded columns are fixedly installed on both sides of the tank body by brackets, and inner sleeves are fixed through the edges of both sides of the cover plate. The threaded columns and inner sleeves are slidably sleeved together, and the ends of the threaded columns are threadedly connected to threaded caps. The end face of the threaded caps is tightly fitted to the end face of the inner sleeves.

[0019] The design scheme proposed in this utility model has the following beneficial effects in application:

[0020] 1. This solution effectively reduces heat loss from the heating element and improves heating efficiency by using an inner liner, tube base, and tube sleeve made of ceramic material. The heating element is evenly distributed along a 180-degree arc surface to ensure that the heat evenly covers the rubber objects on the platform, avoiding local overheating or underheating. At the same time, the temperature detector is linked with the heating element to achieve constant temperature heating, ensuring the temperature stability of the vulcanization process, thereby improving the quality and efficiency of rubber vulcanization.

[0021] 2. As described in 1, a vacuum can be quickly created using an air pump and an air extraction pipe to reduce residual oxygen. Nitrogen is then injected through a nitrogen delivery interface to create an inert environment, preventing oxidation reactions during the rubber vulcanization process. Oxygen concentration detectors and pressure detectors monitor the tank's internal status in real time to ensure safety. After vulcanization, the air circulation interface works in conjunction with the cold water circulation system (fins and bends) to accelerate cooling and improve efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall side structure of this utility model;

[0024] Figure 3 This is a top view of the overall structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of this utility model;

[0026] Figure 5 This is an enlarged schematic diagram of point A of this utility model.

[0027] In the diagram: 1. Base; 11. Tank body; 12. Inner liner; 13. Pipe seat; 14. Heating element; 15. Sealing plate; 16. Pipe sleeve; 17. Storage platform; 18. Air pump; 19. Suction pipe; 2. Nitrogen delivery interface; 21. Valve one; 3. Air circulation interface; 32. Valve two; 33. Channel; 34. Bend; 35. Fin; 4. Cover plate; 41. Handle; 42. Temperature detector; 43. Pressure detector; 44. Oxygen concentration detector; 4001. Threaded post; 4002. Internal sleeve; 4003. Threaded cap. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Reference Figures 1-5 An apparatus for vulcanizing rubber includes a base 1, a tank 11 fixedly installed on the upper end of the base 1, an inner liner 12 fixedly installed inside the tank 11 by a bracket, a gap being provided between the outer wall of the inner liner 12 and the inner wall of the tank 11, and a plurality of tube seats 13 fixedly installed on one end of the inner wall of the inner liner 12 by a bracket, the plurality of tube seats 13 being equidistantly distributed along a 180-degree arc surface, the tube seats 13 being distributed above the inner liner 12, which can ensure that when the electric heating tube 14 is heating, it can ensure stable heat coverage when heating and vulcanizing the rubber object placed on the platform 17;

[0030] An electric heating tube 14 is inserted into the tube seat 13. A sealing plate 15 is fixedly installed at one end of the tank body 11. A tube sleeve 16 is fixedly inserted through the inside of the sealing plate 15. The inner liner 12, tube seat 13 and tube sleeve 16 are all made of ceramic material. The surface of the electric heating tube 14 is slidably fitted with the inside of the tube sleeve 16. The wiring end of the electric heating tube 14 extends outward through the inside of the tube sleeve 16. The ceramic material has a good heat insulation effect, which can reduce the heat loss of the electric heating tube 14 when it is heating.

[0031] The tank body 11 is provided with a platform 17 inside. The platform 17 is installed through the inner liner 12. The platform 17 is a rectangular platform structure. The lower end of the platform 17 is supported and installed on the inner wall of the tank body 11 by the support legs at the four corners. Rubber objects can be placed on the platform 17 for vulcanization processing.

[0032] An air pump 18 is fixedly installed on one side of the upper end of the tank 11 by a bracket. The air pump 18 has an air inlet flange connected to an air extraction pipe 19. The end of the air extraction pipe 19 away from the air pump 18 is fixed inside the tank 11. The air pump 18, together with the air extraction pipe 19, can evacuate the inside of the tank 11 before vulcanization. At the same time, after nitrogen is injected, air can be circulated when it is necessary to balance the air pressure, and after vulcanization, air can be circulated when it is necessary to ventilate and cool the inside of the tank 11.

[0033] It should be further noted that a nitrogen delivery port 2 is fixedly installed at the upper end of the tank 11 away from the air pump 18. A valve 21 is provided on the surface of the nitrogen delivery port 2. The valve core of the valve 21 is embedded inside the nitrogen delivery port 2. The nitrogen delivery port 2 can deliver nitrogen into the tank 11 after a vacuum is drawn inside the tank 11.

[0034] It should be further explained that an air circulation interface 3 is fixed through the center of the sealing plate 15. A valve 2 31 is provided on the surface of the air circulation interface 3. The valve core of the valve 2 31 is embedded inside the air circulation interface 3. The valve 2 31 can seal the air circulation interface 3 during vacuuming and nitrogen transportation, and can ventilate and dissipate heat when cooling inside the tank 11.

[0035] It should be further noted that the flange of the air circulation interface 3 away from the sealing plate 15 is connected to a transition interface 32, and the other end of the transition interface 32 is welded and fixed with a channel 33. The interior of the channel 33 is connected to the interior of the transition interface 32, and the channel 33 can cooperate to introduce air during air circulation.

[0036] It should be further explained that several sets of fins 35 are fixedly installed on the inner wall of the channel 33, and a bent pipe 34 is fixedly installed through the inside of the several sets of fins 35. The two ends of the bent pipe 34 are respectively a cold water inlet and a cold water outlet. Both the cold water inlet and the cold water outlet extend outward through the lower end of the channel 33. By passing low-temperature water through the bent pipe 34, combined with the heat conduction effect of the fins 35, the air can be cooled when it enters the tank 11 through the fins 35 and the bent pipe 34, thereby improving the cooling efficiency of the tank 11.

[0037] It should be further noted that the opening of the tank 11 is covered by a cover plate 4, and a handle 41 is fixed to the end of the cover plate 4 away from the tank 11. The cover plate 4 can close the material inlet and outlet of the tank 11, and the handle 41 can better operate the cover plate 4 to close or close.

[0038] It should be further explained that a temperature detector 42, a pressure detector 43, and an oxygen concentration detector 44 are sequentially installed on the surface of the cover plate 4. The temperature detector 42 can detect the internal temperature of the electric heating tube 14 during vulcanization. The electric heating tube 14 itself can be connected to a temperature controller via wires for constant temperature heating. The pressure detector 43 can detect the internal pressure during nitrogen supply to prevent excessive pressure from causing deformation of the tank 11. The oxygen concentration detector 44 can detect the oxygen in the tank 11 during nitrogen supply and during pressure balancing after nitrogen supply to see if the set value for vulcanization processing has been reached.

[0039] It should be further explained that threaded posts 4001 are fixedly installed on both sides of the tank body 11 by brackets, and inner sleeves 4002 are fixed through the edges of both sides of the cover plate 4. The threaded posts 4001 and the inner sleeves 4002 are slidably sleeved together. The end of the threaded post 4001 is threadedly connected to a threaded cap 4003. The end face of the threaded cap 4003 is tightly fitted to the end face of the inner sleeve 4002. When the cover plate 4 needs to be installed with the tank body 11, the end face of the cover plate 4 is first fitted with the end face of the tank body 11. At this time, the threaded posts 4001 and the inner sleeves 4002 are internally connected. By threading the end of the threaded cap 4003 with the end of the threaded post 4001, the cover plate 4 and the tank body 11 can be locked after being closed.

[0040] Working method: This solution uses electric heating tubes 14 to heat and vulcanize the rubber objects inside the inner liner 12. The electric heating tubes 14 are evenly distributed on the tube seat 13 and are equidistantly arranged along the 180-degree arc surface to ensure that the heat can stably cover the rubber products on the platform 17. Since the inner liner 12, tube seat 13 and tube sleeve 16 are all made of ceramic materials, their excellent heat insulation performance can effectively reduce heat loss and improve heating efficiency. At the same time, the temperature detector 42 monitors the internal temperature of the tank 11 in real time and adjusts the power of the electric heating tubes 14 through the temperature controller to achieve constant temperature vulcanization. During the vulcanization process, the rubber products are placed on the platform 17. The heat generated by the electric heating tubes 14 is transferred to the rubber surface through radiation and convection, which promotes the cross-linking reaction and forms a stable three-dimensional network structure. Since there is a gap between the inner liner 12 and the tank 11, the interference of the external environment on the vulcanization temperature can be reduced, ensuring that the vulcanization process is stable. In addition, the sealing design of the cover plate 4 further reduces heat loss and improves vulcanization efficiency.

[0041] Before vulcanization, the device uses air pump 18 and suction pipe 19 to evacuate the inside of tank 11 to remove oxygen and other impurities that may affect the vulcanization reaction. After evacuation, nitrogen is injected into tank 11 through nitrogen delivery port 2 to form an inert gas environment and prevent the rubber from oxidizing and deteriorating at high temperature. Valve 21 is used to control the flow of nitrogen, while pressure detector 43 monitors the pressure inside the tank in real time to avoid deformation of tank 11 due to excessive pressure. Oxygen concentration detector 44 ensures that the oxygen content inside the tank is reduced to a safe level that meets the requirements of the vulcanization process. If the air pressure needs to be adjusted during vulcanization, it can be finely adjusted through air circulation port 3 and valve 31. Maintaining the nitrogen environment not only improves the vulcanization quality but also reduces the performance degradation of rubber products caused by oxidation. In addition, after vulcanization, ventilation can be carried out through air pump 18 and suction pipe 19 to accelerate the cooling of the inside of tank 11.

[0042] After vulcanization, the device introduces external air through air circulation interface 3 and channel 33 for rapid cooling. Channel 33 is equipped with fins 35 and bends 34. Cold water flows in from the inlet of bend 34 and flows out from the outlet. The thermal conductivity of fins 35 is used to reduce the temperature of the air flowing through it. The cooled air enters tank 11, accelerating the cooling process of rubber products and improving production efficiency. Valve 2 31 controls the opening and closing of air circulation interface 3 to ensure that it remains sealed during the vulcanization stage, while allowing air circulation during the cooling stage. Temperature detector 42 continuously monitors the temperature inside the tank to ensure that the cooling process is safe and controllable. In addition, the design of threaded column 4001 and threaded cap 4003 allows the cover plate 4 to be opened or closed quickly, making it convenient for operators to pick up and put down rubber products. The entire cooling system effectively shortens the production cycle and avoids deformation or cracking of rubber products caused by sudden cooling.

[0043] 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. An apparatus for vulcanizing rubber, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly installed with a tank (11), and the inside of the tank (11) is fixedly installed with an inner liner (12) by a bracket. The outer wall of the inner liner (12) and the inner wall of the tank (11) are provided with a gap. One end of the inner wall of the inner sleeve (12) is fixedly installed with a number of tube seats (13) by a bracket. The number of tube seats (13) are equidistantly distributed along the 180-degree arc surface. An electric heating tube (14) is inserted inside the tube seat (13). A sealing plate (15) is fixedly installed at one end of the tank (11). A tube sleeve (16) is fixedly inserted through the inside of the sealing plate (15). The inner liner (12), tube seat (13) and tube sleeve (16) are all made of ceramic material. The surface of the electric heating tube (14) is slidably sleeved with the inside of the tube sleeve (16). The wiring end of the electric heating tube (14) extends outward through the inside of the tube sleeve (16). The tank (11) is provided with a platform (17) inside. The platform (17) passes through the inner liner (12). The platform (17) is a rectangular platform structure. The lower end of the platform (17) is supported by legs at the four corners and mounted on the inner wall of the tank (11). An air pump (18) is fixedly installed on one side of the upper end of the tank (11) by a bracket. The air pump (18) has an air inlet flange connected to an air extraction pipe (19). The end of the air extraction pipe (19) away from the air pump (18) is fixed inside the tank (11).

2. The apparatus for vulcanizing rubber according to claim 1, characterized in that: The upper end of the tank (11) away from the gas pump (18) is fixed with a nitrogen delivery interface (2). A valve (21) is provided on the surface of the nitrogen delivery interface (2), and the valve core of the valve (21) is embedded inside the nitrogen delivery interface (2).

3. The apparatus for vulcanizing rubber according to claim 1, characterized in that: An air circulation port (3) is fixed through the center of the sealing plate (15). A valve (31) is provided on the surface of the air circulation port (3), and the valve core of the valve (31) is embedded inside the air circulation port (3).

4. The apparatus for rubber vulcanization treatment according to claim 3, characterized in that: The air circulation interface (3) has a flange connected to a transition interface (32) at one end away from the sealing plate (15). The other end of the transition interface (32) is welded and fixed with a channel (33). The interior of the channel (33) is connected to the interior of the transition interface (32).

5. The apparatus for vulcanizing rubber according to claim 4, characterized in that: Several sets of fins (35) are fixedly installed on the inner wall of the channel (33), and a bent pipe (34) is fixedly installed through the inside of the several sets of fins (35). The two ends of the bent pipe (34) are respectively a cold water inlet and a cold water outlet. Both the cold water inlet and the cold water outlet extend outward through the lower end of the channel (33).

6. The apparatus for vulcanizing rubber according to claim 1, characterized in that: The opening of the tank (11) is covered by a cover plate (4), and a handle (41) is fixed to the end of the cover plate (4) away from the tank (11).

7. The apparatus for vulcanizing rubber according to claim 6, characterized in that: A temperature detector (42), a pressure detector (43), and an oxygen concentration detector (44) are sequentially installed through the surface of the cover plate (4).

8. The apparatus for vulcanizing rubber according to claim 7, characterized in that: Both sides of the tank (11) are fixedly installed with threaded columns (4001) by brackets. Both sides of the cover plate (4) are fixed with inner sleeves (4002). The threaded columns (4001) and the inner sleeves (4002) are slidably sleeved together. The end of the threaded column (4001) is threadedly connected with a threaded cap (4003). The end face of the threaded cap (4003) is tightly attached to the end face of the inner sleeve (4002).

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