Mixing equipment for rubber tube processing

Abstract

The invention relates to the technical field of mixing equipment, and discloses rubber tube processing mixing equipment which comprises a bottom frame, and a rack is arranged on one side of the top of the bottom frame; a front roller and a rear roller which are used for rubber open milling are sequentially arranged at the middle upper part of the inner side of the rack, the front roller and the rear roller generate relative rotation motion through a synchronous gear, and the front roller generates heat during rubber open milling and mixing processing to process a rubber material. By adding and arranging the raw rubber preheating mechanism, when fluororubber is used as a raw material for processing a rubber pipe, the mechanism combines sectional temperature control with mechanical stirring, so that on one hand, gradient softening of fluororubber raw rubber is realized, shear force concentration during direct processing is avoided, and stable operation of equipment is guaranteed; on the other hand, through automatic feeding and uniform heating, uniform plasticization of the raw rubber is ensured, a good foundation is laid for a subsequent open milling procedure, meanwhile, early crosslinking of the raw rubber due to high temperature can be prevented through segmented temperature control, and processability and material stability are both considered.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mixing equipment, in particular to a rubber pipe processing mixing equipment. BACKGROUND

[0002] In the field of rubber pipe processing, the choice of material system directly determines the product performance and application scenario. In conventional processing, general rubbers such as natural rubber, styrene-butadiene rubber, and cis-butadiene rubber are widely used in ordinary water pipes, low-pressure hoses and other mass products due to their good processing performance and cost advantage; the compounding system mainly uses conventional additives such as carbon black, sulfur, and accelerators, and stable production can be achieved through mature mixing process. However, with the upgrading of performance requirements of rubber pipes in high-end fields such as automobiles, chemicals, and aviation, such as resistance to extreme temperatures of -40℃ to 200℃, resistance to fuel / oil and strong corrosive medium, and resistance to high pressure pulse, general rubbers have been difficult to meet the demand, and special rubbers and functional materials have gradually become the core solution.

[0003] At present, special rubbers such as fluorine rubber, silicone rubber, and hydrogenated nitrile rubber exhibit excellent performance due to their unique molecular structure: fluorine rubber has strong polar C-F bonds in the main chain, has outstanding oil resistance, chemical corrosion resistance, and temperature resistance, and is a key material for automobile fuel pipes and chemical conveying pipes; silicone rubber has a Si-O bond as the main chain and has a wide temperature resistance of -60℃ to 260℃, and is often used in high-temperature steam pipes and food-grade hoses; hydrogenated nitrile rubber is treated by saturation, which retains the oil resistance of nitrile rubber while improving the temperature resistance to above 150℃, and is widely used in automobile gearbox oil pipes. The introduction of these special rubbers has broken through the performance boundaries of general rubbers, but has also brought significant challenges to the processing link.

[0004] Among them, the processing problem of fluorine rubber is particularly prominent. The raw rubber has a significantly greater intermolecular force than general rubbers due to the strong polarity of C-F bonds in the molecular chain, and has high hardness and low flowability at room temperature, which requires the use of open mill equipment to achieve plasticization and mixing of the compounding agent through shearing action. However, there is a significant contradiction between the process parameters of conventional open mill and the characteristics of fluorine rubber: in order to improve efficiency, the temperature is usually controlled at 120-150℃ during the mixing of general rubbers, while the vulcanization system of fluorine rubber is extremely sensitive to temperature, and when the processing temperature exceeds 120℃, the vulcanizing agent will initiate crosslinking reaction in advance, causing the rubber to appear "scorching" - local hardening and loss of elasticity, ultimately causing cracks and delamination in the finished rubber pipe. Therefore, the present application provides a rubber pipe processing mixing equipment to solve the above technical problems. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a rubber pipe processing mixing equipment, which solves the problem of scorching caused by high temperature during the processing of fluorine rubber.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rubber hose processing and mixing device, comprising... The base frame has a rack mounted on one side of its top. The upper inner side of the frame is equipped with a front roller and a rear roller for rubber mixing. The front roller and the rear roller rotate relative to each other through a synchronous gear. The front roller generates heat during rubber mixing and compounding to process the rubber material. The spacing adjustment handwheel is located on the upper middle part of both sides of the front end of the frame. The spacing adjustment handwheel adjusts the spacing between the front roller and the rear roller. An electrical control box is installed on one side of the top center of the base frame. The electrical control box controls the operating status of the overall electrical equipment. The raw rubber preheating mechanism, located at the top of the frame, is used to preheat the raw fluororubber granules before open milling. The open mill cooling mechanism is located on the upper middle part of one side of the frame and is used for the open milling of fluororubber granule raw materials after preheating and multiple cooling processes during the open milling process. The mixing and stripping mechanism is located in the middle and front part inside the frame and is used to assist in the stripping of the gel-like rubber raw material during the open milling process. The uniform mixing mechanism, located on the top inner side of the frame, is used to mix the rubber raw materials after open milling with powdered compounding agents.

[0007] Preferably, the raw rubber preheating mechanism includes an upper processing seat, which is installed at the top center of the frame. A granule hopper is provided on one side of the top of the upper processing seat, and the interior of the granule hopper is connected to the interior of the upper processing seat. A heat-conducting oil chamber is provided inside the upper processing seat. The interior of the upper processing seat is divided into two stages, a softening section and a plasticizing section, from the end near the granule hopper. Heaters are provided on both sides of the middle of the front end of the upper processing seat to heat the heat-conducting oil in the heat-conducting oil chamber. An oil temperature controller for controlling the temperature of the heat-conducting oil in the heat-conducting oil chamber is provided at the middle of the rear end of the upper processing seat.

[0008] Preferably, the raw rubber preheating mechanism further includes a mounting rod. The mounting rod is rotatably connected to the inner center of the upper processing seat. The outer wall of the mounting rod is provided with a spiral conveyor seat and an agitator for driving the fluororubber raw rubber particles to tumble and move. A drive motor is provided in the middle of one side of the upper processing seat, and the output end of the drive motor passes through the upper processing seat and is connected to the middle of one end of the mounting rod. A discharge seat is provided on the bottom side of the upper processing seat away from the particle hopper. The discharge seat discharges the fluororubber raw rubber particles that have been processed in the plasticizing section into the space between the front roller and the rear roller for subsequent open mill processing.

[0009] Preferably, the open mill cooling mechanism includes a main motor, which is located on one side of the top of the base frame, and a reducer is located at the middle and rear of one side of the electrical control box. The output end of the main motor is connected to the power input end of the reducer, and the power input end of the reducer is connected to the middle of one end of the rear roller.

[0010] Preferably, the open mill cooling mechanism further includes a liquid storage tank. The liquid storage tank is located on the top of the side of the frame away from the main motor. The inner middle of the liquid storage tank is divided into two independent chambers, a cooling inlet chamber and a heating outlet chamber, by a partition. A cooling circulation pump is located in the middle of one side of the liquid storage tank. The cooling circulation pump connects the two chambers, the cooling inlet chamber and the heating outlet chamber, through a connecting pipe. A spiral flow channel is provided inside the front roller, and a temperature sensor is provided at the end of the spiral flow channel.

[0011] Preferably, the open mill cooling mechanism further includes an air collection box, which is located at the rear center of the liquid storage tank. A variable frequency fan is located at the bottom center of the liquid storage tank. The exhaust end of the variable frequency fan is connected to the interior of the air collection box via a connecting pipe. Multiple strip-shaped air ducts are equidistantly arranged inside the liquid storage tank, and the interior of each strip-shaped air duct is connected to the interior of the air collection box. A PLC controller is located on one side of the upper middle part of the liquid storage tank. The PLC controller adjusts the operating power of the cooling circulation pump and the variable frequency fan in real time based on the data from the temperature sensor.

[0012] Preferably, the mixing and stripping mechanism includes an open mounting base. The open mounting base is fixedly connected to the front inner side of the frame. A slot is opened at the rear inner side of the bottom of the open mounting base. An inclined scraper is fixedly connected to the rear inner side of the slot. A high-pressure jet exhaust is provided at the rear bottom of the open mounting base. A micro air pump is provided at the middle rear end of the open mounting base. The exhaust end of the micro air pump is connected to the air inlet of the high-pressure jet exhaust through a connecting pipe.

[0013] Preferably, the mixing and stripping mechanism further includes a friction synchronous wheel. The friction synchronous wheel is rotatably connected to one side of the bottom center of the open-type mounting base, and a drive synchronous wheel is rotatably connected to one side of the inside of the open-type mounting base. The outer wall surface of the friction synchronous wheel is in contact with the outer wall surface of the drive synchronous wheel. A U-shaped support seat is provided on the side of the inside of the open-type mounting base away from the drive synchronous wheel. A guide plate is provided on one side of the bottom of the inside of the open-type mounting base. A hexagonal winding post is provided inside the open-type mounting base, and the hexagonal end of the hexagonal winding post is inserted into the inside of the drive synchronous wheel, while the cylindrical end extends into the inside of the U-shaped support seat. A scraper ring seat is slidably connected to the hexagonal winding post.

[0014] Preferably, the uniform mixing mechanism includes a lower processing seat, which is fixedly connected to the middle of the inner top of the frame. A centrifugal processing chamber is opened in the middle of the inner side of the lower processing seat. A stirring seat is rotatably connected inside the centrifugal processing chamber. A second drive motor is provided in the middle of one end of the lower processing seat, and the output end of the second drive motor is connected to the middle of one end of the stirring seat. A feed box is provided in the upper middle of the front side of the lower processing seat. An electrically controlled closed seat for controlling the flow of powdered compounding agent is provided in the middle of the centrifugal processing chamber. A multi-stage sieve plate with decreasing aperture is provided in the lower middle of the centrifugal processing chamber. An ultrasonic generator is provided in the middle of the rear side of the lower processing seat.

[0015] Preferably, the uniform mixing mechanism further includes a guide discharge box. The guide discharge box is provided at the bottom center of the lower processing seat. Multiple guide cavities are equidistantly opened inside the guide discharge box. A discharge control plate for controlling the closed state of the guide cavities is provided in the lower inner part of the guide discharge box. A strip vacuum generator is provided in the rear center of the guide discharge box, and the vacuum end of the strip vacuum generator is connected to the interior of each guide cavity. A collection tray is slidably connected to the lower inner part of the frame.

[0016] Working Principle: When processing rubber hoses using fluororubber as the base raw material, the raw rubber preheating mechanism is first activated. Workers add fluororubber raw granules through the granule hopper into the upper processing seat. When the fluororubber raw granules enter the upper processing seat, the drive motor on the upper processing seat starts. Since the fluororubber raw granules are solid at room temperature, directly feeding them into the open mill can easily cause concentrated shear force and excessive roller load. Therefore, the shaft of the drive motor drives the mounting rod inside the upper processing seat to rotate synchronously while starting. Simultaneously, the mounting rod drives the spiral conveyor seat and agitator plate on it to rotate synchronously, thus conveying and agitating the fluororubber raw granules in the upper processing seat to ensure uniform heating during the conveying process. While conveying the fluororubber raw granules, the two heaters on the upper processing seat start synchronously, heating the heat transfer oil in the heat transfer oil chamber inside the upper processing seat, thereby increasing the temperature of the upper processing seat. The processing unit consists of two heating stages: a softening stage and a plasticizing stage. Simultaneously, an oil temperature controller on the upper processing unit controls the temperature of the heat-conducting oil in both stages. When the fluororubber raw granules enter the softening stage at 80-90 degrees Celsius, the high temperature rapidly breaks down some of the intermolecular forces within the raw granules, transforming them from a hard solid to a semi-soft state. After processing in the softening stage, the raw granules are then transported to the plasticizing stage in the upper processing unit via the rotation of the mounting rod and the assistance of the spiral conveyor and agitator. In the plasticizing stage, the raw granules maintain their plasticity at a lower temperature of 60-70 degrees Celsius, preventing premature cross-linking due to high temperatures. After the plasticizing stage, the raw granules are guided by the discharge seat into the front and rear rollers within the frame, thus completing the preheating treatment of the fluororubber granules before processing.Then, the open mill cooling mechanism is activated. When the fluororubber raw granules, after being processed by the raw rubber preheating mechanism, enter between the front and rear rollers, the main motor on the base frame starts. The main motor inputs power to the reducer, and the torque is converted by the reducer to drive the rear roller within the frame. Simultaneously, the rear roller rotates, driving the front roller at different speeds via a synchronous gear. This creates a shearing force through the speed difference between the front and rear rollers, and simultaneously, the high temperature on the front roller performs open milling on the fluororubber granules between them. While the front and rear rollers are performing open milling on the preheated fluororubber granules, the ethylene glycol cooling solution in the cooling inlet chamber of the storage tank enters the spiral flow channel within the front roller. The spiral structure of the spiral flow channel extends the residence time of the cooling solution within the front roller, allowing heat exchange between the cooling solution and the roller surface, removing heat from the roller surface. Simultaneously, as the cooling solution in the spiral flow channel is discharged into the heating outlet chamber within the storage tank, the temperature is monitored by a temperature sensor. To regulate the temperature of the cooling solution, when the temperature of the cooling solution is detected to be above 90 degrees Celsius, the PLC controller on the storage tank will automatically control the cooling circulation pump to increase the injection flow rate and circulation speed of the coolant. At the same time, the variable frequency fan at the bottom of the storage tank will be started. The variable frequency fan will inject gas into the air collection box through the connecting pipe. The gas entering the air collection box will then be discharged into the external environment through the various strip air channels in the storage tank. While the gas in the air collection box is being discharged through the strip air channels, the gas in the strip air channels will absorb the heat generated by the cooling solution as it flows, and then discharge it into the external environment. This method of accelerating the air flow in the strip air channels will assist in the cooling of the cooling solution in the two chambers of the strip air channels. When the temperature sensor in the spiral flow channel detects that the temperature is below 80 degrees Celsius, the PLC controller will control the cooling circulation pump to reduce the circulation flow rate and simultaneously shut down the variable frequency fan to avoid excessive cooling and hardening of the rubber material. This completes the cooling treatment of the fluororubber raw material.Simultaneously, the mixing and stripping mechanism is activated. Due to the high polarity and viscosity of fluororubber, it tends to adhere tightly to the roller surface during the mixing stage after open milling. Manual stripping is inefficient and prone to causing burns, and uneven force can also lead to deformation of the rubber compound. Therefore, during the mixing process of the fluororubber compound, the rubber compound adhering to the surface of the front roller is scraped off by the inclined scraper at the bottom of the open-type mounting seat as it passes through the bottom. The scraped rubber compound then enters the open-type mounting seat through the slot at the bottom. At the same time, while the inclined scraper is scraping the rubber compound on the front roller surface, the micro air pump on the open-type mounting seat is activated. Simultaneously, the micro air pump injects high-pressure gas into the high-pressure jet exhaust at the bottom of the open-type mounting seat through a connecting pipe. The high-pressure gas then enters the gap between the bottom of the inclined scraper and the roller surface, thereby assisting in the stripping of the rubber compound from the roller surface through the bottom of the open-type mounting seat. The rubber material entering the grooved part is guided by the bottom guide plate to the position of the hexagonal take-up column. At the same time, as the front roller rotates, the friction drives the friction synchronous wheel at the bottom of the open-type mounting base to rotate. The friction synchronous wheel rotates, and the friction drives the drive synchronous wheel in the open-type mounting base to rotate synchronously. The drive synchronous wheel rotates, and the hexagonal take-up column rotates synchronously. As the hexagonal take-up column is driven to rotate, the rubber material on its surface is wrapped around the guide plate by its edges and corners. After the rubber material on the surface of the front roller is scraped off, the worker takes out the hexagonal take-up column from the open-type mounting base and then uses the scraper ring seat on it to push the rubber material on the surface of the hexagonal take-up column back between the front roller and the rear roller for re-mixing. After that, the worker puts the hexagonal take-up column back into the open-type mounting base for subsequent peeling operations. This cycle is repeated to complete the auxiliary peeling treatment of the roller surface during the mixing process.Afterwards, the uniform mixing mechanism is activated. Due to the strong polarity of fluororubber, conventional powder formulations are prone to agglomeration due to electrostatic adsorption. Direct addition would lead to uneven dispersion. Therefore, after the fluororubber compound undergoes multiple mixing processes by the mixing and stripping mechanism, the operator adds the required powder additives into the centrifugal processing chamber within the lower processing unit via a plug-in feeding box. Then, the second drive motor on the lower processing unit is activated. The rotating shaft of the second drive motor drives the stirring seat within the centrifugal processing chamber to rotate. The centrifugal force generated by the rotating stirring seat initially breaks up the agglomerates formed by electrostatic adsorption. Then, the operator controls the electrically controlled sealing seat within the centrifugal processing chamber through the control equipment, allowing the powder additives, after being dispersed, to flow into the centrifugal processing chamber. At the lower part, the ultrasonic generator on the lower processing seat is activated. Simultaneously, the ultrasonic generator uses high-frequency vibration and multi-stage sieve plates to break down micron-sized agglomerates in the powder compounding agent. This dispersed powder compounding agent then enters the guide cavity in the guide discharge box, completing a secondary dispersion process. Simultaneously, the strip vacuum generator on the guide discharge box is activated, creating a slight negative pressure inside the guide cavity. The operator then pulls and separates the discharge control plate on the guide discharge box, opening the bottom of the box. The negative pressure created by the strip vacuum generator in the guide cavity evenly draws in the powder and disperses it onto the rubber compound being mixed between the front and rear rollers, thus completing the uniform mixing of the rubber compound and the powder compounding agent.

[0017] This invention provides a rubber hose processing mixing device. It has the following beneficial effects: 1. By adding and setting a raw rubber preheating mechanism, when using fluororubber as raw material for rubber tube processing, this invention achieves gradient softening of fluororubber raw rubber by combining segmented temperature control with mechanical stirring. This avoids concentrated shear force during direct processing and ensures stable equipment operation. On the other hand, automated feeding and uniform heating reduce manual intervention and ensure uniform plasticization of the raw rubber, laying a good foundation for subsequent open mixing processes. At the same time, segmented temperature control can prevent the raw rubber from premature cross-linking due to high temperature, taking into account both processability and material stability.

[0018] 2. By adding and setting an open mill cooling mechanism, this invention not only precisely controls the roller temperature through a spiral flow channel and dual-medium circulation when using fluororubber raw materials for open mill processing, thus preventing fluororubber from scorching due to overheating and ensuring stable rubber performance, but also dynamically adjusts the cooling efficiency through intelligent temperature control to prevent hardening of the rubber due to excessive cooling and improve processing continuity. In addition, the uniform roller surface temperature distribution reduces the difference in rubber performance, providing a guarantee for high-quality mixing.

[0019] 3. By adding and setting a mixing and stripping mechanism, when using fluororubber raw materials for mixing and processing, this invention first automatically completes the removal of the rubber material from the roller through a combination of mechanical stripping and airflow assistance, reducing the safety risks of manual contact with high-temperature rubber material. Secondly, the silicone scraper and synchronous winding structure prevent the rubber material from tearing or deforming, ensuring the integrity of the rubber material. At the same time, the flexible contact with the roller surface reduces equipment wear, extends the service life of components, and improves processing efficiency.

[0020] 4. By adding and setting a uniform mixing mechanism, this invention not only solves the agglomeration problem of powdered compounding agents by combining pre-dispersion and negative pressure adsorption when using fluororubber raw materials for compounding, ensuring uniform mixing with fluororubber, but also reduces powder flying by negative pressure conveying, improves the working environment and avoids material waste. At the same time, the combination of graded processing and precise feeding can also adapt to the mixing requirements of different compounding agents and improve the versatility of the equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2 This is a schematic diagram of the rear structure of the present invention; Figure 3 This is a partial structural diagram of the upper processing seat of the present invention; Figure 4 This is a cross-sectional schematic diagram of the internal structure of the upper processing seat of the present invention; Figure 5 This is a cross-sectional schematic diagram of the internal structure of the liquid storage tank of the present invention; Figure 6 This is a cross-sectional schematic diagram of the internal structure of the front roller of the present invention; Figure 7 This is a schematic diagram of the bottom structure of the open-type mounting base of the present invention; Figure 8 This is a schematic diagram of the internal structure of the open-type mounting base of the present invention; Figure 9 This is a partial structural diagram of the hexagonal coiled column of the present invention; Figure 10 This is a partial structural diagram of the front side of the lower processing seat of the present invention; Figure 11 This is a partial structural diagram of the rear side of the lower processing seat of the present invention; Figure 12 This is a cross-sectional schematic diagram of the internal structure of the lower processing seat and the guide discharge box of the present invention.

[0022] The components include: 1. Base frame; 2. Electrical control box; 3. Main motor; 4. Reducer; 5. Drive motor 1; 6. Pellet hopper; 7. Lower processing seat; 8. Upper processing seat; 9. Open mounting seat; 10. Liquid storage tank; 11. Strip air duct; 12. Spacing adjustment handwheel; 13. Front roller; 14. Collection tray; 15. Frame; 16. Rear roller; 17. Strip vacuum generator; 18. Air collection box; 19. Cooling circulation pump; 20. PLC controller; 21. Ultrasonic generator; 22. Heater; 23. Oil temperature controller; 24. Mounting rod; 25. Screw conveyor seat. 26. Agitator flap; 27. Heat transfer oil chamber; 28. Variable frequency fan; 29. ​​Spiral flow channel; 30. Inclined scraper; 31. Grooving; 32. High-pressure jet exhaust; 33. Friction synchronous wheel; 34. Drive synchronous wheel; 35. Scraper ring seat; 36. Guide plate; 37. Hexagonal winding column; 38. Miniature air pump; 39. U-shaped support seat; 40. Drive motor II; 41. Plug-in feeding box; 42. Guide discharge box; 43. Discharge control board; 44. Agitator seat; 45. Centrifugal treatment chamber; 46. Electrically controlled enclosed seat; 47. Multi-stage sieve plate; 48. Guide chamber; 49. Discharge seat. Detailed Implementation

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see the appendix Figure 1 - Appendix Figure 2 This invention provides a rubber tube processing and mixing equipment, including a base frame 1, with a frame 15 disposed on one side of the top of the base frame 1; a front roller 13 and a rear roller 16 for rubber refining are sequentially disposed on the upper inner side of the frame 15, and the front roller 13 and the rear roller 16 generate relative rotational motion between them through a synchronous gear; the front roller 13 generates heat during rubber refining and mixing to process the rubber material. The spacing adjustment handwheel 12 is located on the upper middle part of both sides of the front end of the frame 15. The spacing adjustment handwheel 12 adjusts the spacing between the front roller 13 and the rear roller 16. An electrical control box 2 is installed on one side of the middle part of the top of the base frame 1. The electrical control box 2 controls the operating status of the overall electrical equipment. Please see the appendix Figure 3 - Appendix Figure 4 A raw rubber preheating mechanism, which is located on the top of the frame 15, is used to preheat the raw fluororubber granules before open milling. The raw rubber preheating mechanism includes an upper processing seat 8, which is installed at the top center of the frame 15. A granule hopper 6 is provided on one side of the top of the upper processing seat 8, and the interior of the granule hopper 6 is connected to the interior of the upper processing seat 8. A heat-conducting oil chamber 27 is provided inside the upper processing seat 8. The interior of the upper processing seat 8 is divided into two stages from the end near the granule hopper 6: a softening section and a plasticizing section. Heaters 22 are provided on both sides of the middle of the front end of the upper processing seat 8. The heaters 22 heat the heat-conducting oil in the heat-conducting oil chamber 27. An oil temperature controller 23 is provided at the middle of the rear end of the upper processing seat 8 to control the temperature of the heat-conducting oil in the heat-conducting oil chamber 27.

[0025] When the raw rubber preheating mechanism is started, the operator adds the fluororubber raw rubber granules through the granule hopper 6 into the upper processing seat 8. When the fluororubber raw rubber granules enter the upper processing seat 8, the drive motor 5 on the upper processing seat 8 is started. Since the fluororubber raw rubber granules are solid at room temperature, directly feeding them into the open mill can easily cause shear force concentration and excessive roller load. Therefore, the shaft of the drive motor 5 drives the mounting rod 24 inside the upper processing seat 8 to rotate synchronously at the same time as it starts. At the same time as the mounting rod 24 rotates, it drives the spiral conveyor seat 25 and the stirring flap 26 on it to rotate synchronously. This conveys and turns the fluororubber raw rubber granules in the upper processing seat 8 to ensure uniform heating during the conveying process.

[0026] The raw rubber preheating mechanism also includes a mounting rod 24. The mounting rod 24 is rotatably connected to the inner middle of the upper processing seat 8. The outer wall of the mounting rod 24 is provided with a spiral conveyor seat 25 and an agitator 26 for driving the fluororubber raw rubber granules to flip and move. A drive motor 5 is provided in the middle of one side of the upper processing seat 8, and the output end of the drive motor 5 passes through the upper processing seat 8 and is connected to the middle of one end of the mounting rod 24. A discharge seat 49 is provided on the bottom side of the upper processing seat 8 away from the granule hopper 6. The discharge seat 49 discharges the fluororubber raw rubber granules that have been processed in the plasticizing section into the space between the front roller 13 and the rear roller 16 for subsequent open mill processing.

[0027] While the fluororubber raw granules are being conveyed, the two heaters 22 on the upper processing seat 8 are started synchronously. The heaters 22 heat the heat transfer oil in the heat transfer oil chamber 27 inside the upper processing seat 8, thereby forming two heating stages inside the upper processing seat 8: a softening stage and a plasticizing stage. At the same time, the oil temperature controller 23 on the upper processing seat 8 controls the oil temperature of the heat transfer oil in the two stages inside the upper processing seat 8. When the fluororubber raw granules enter the softening stage at 80 to 90 degrees Celsius, the softening stage uses high temperature to quickly break some of the intermolecular forces in the raw granules, causing the raw granules to change from a hard solid state to a semi-soft state.

[0028] After being processed in the softening section, the raw rubber granules are then transported to the plasticizing section in the upper processing seat 8 by the rotation of the mounting rod 24 and the auxiliary cooperation of the spiral conveyor seat 25 and the stirring flap 26. In the plasticizing section, the raw rubber granules are kept plastic at a relatively low temperature of 60 to 70 degrees Celsius, while avoiding premature cross-linking due to high temperature. After being processed in the plasticizing section, the raw rubber granules are guided by the discharge seat 49 into the front roller 13 and the rear roller 16 in the frame 15, thus completing the preheating treatment of the fluororubber granules before processing.

[0029] Please see the appendix Figure 5 - Appendix Figure 6 The open mill cooling mechanism is located on the upper middle part of one side of the frame 15. It is used for the open milling of the fluororubber granule raw material after preheating and for multiple cooling treatments during the open milling process. The open mill cooling mechanism includes a main motor 3. The main motor 3 is installed on one side of the top of the base frame 1, and a reducer 4 is installed in the middle and rear part of one side of the electrical control box 2. The output end of the main motor 3 is connected to the power input end of the reducer 4, and the power input end of the reducer 4 is connected to the middle of one end of the rear roller 16.

[0030] When the open mill cooling mechanism is started, after the fluororubber raw rubber granules have been processed by the raw rubber preheating mechanism and enter between the front roller 13 and the rear roller 16, the main motor 3 on the base frame 1 is started. The main motor 3 inputs power to the reducer 4, and after the torque is converted by the reducer 4, it drives the rear roller 16 in the frame 15. While the rear roller 16 is rotating, it drives the front roller 13 to rotate at different speeds through the synchronous gear. Thus, the difference in rotational speed between the front roller 13 and the rear roller 16 forms a shearing force, and at the same time, the high temperature on the front roller 13 performs open milling treatment on the fluororubber granules between the two.

[0031] The open mill cooling mechanism also includes a liquid storage tank 10. The liquid storage tank 10 is located on the top of the side of the frame 15 away from the main motor 3. The inner middle of the liquid storage tank 10 is divided into two independent chambers, a cooling inlet chamber and a heating outlet chamber, by a partition. A cooling circulation pump 19 is located in the middle of one side of the liquid storage tank 10. The cooling circulation pump 19 connects the two chambers, the cooling inlet chamber and the heating outlet chamber, through a connecting pipe. A spiral flow channel 29 is provided inside the front roller 13. A temperature sensor is provided at the end of the spiral flow channel 29.

[0032] When the preheated fluororubber granules are processed by the front roller 13 and the rear roller 16, the ethylene glycol cooling solution in the cooling inlet chamber of the storage tank 10 enters the spiral flow channel 29 in the front roller 13. Due to the spiral structure of the spiral flow channel 29, the residence time of the cooling solution in the front roller 13 is extended. The cooling solution exchanges heat with the roller and removes the heat from the roller surface. At the same time, when the cooling solution in the spiral flow channel 29 is discharged into the heating outlet chamber in the storage tank 10, the temperature of the cooling solution is monitored by a temperature sensor.

[0033] The cooling mechanism for open mills also includes an air collection box 18. The air collection box 18 is located in the middle of the rear side of the liquid storage tank 10. A variable frequency fan 28 is located in the middle of the bottom end of the liquid storage tank 10. The exhaust end of the variable frequency fan 28 is connected to the interior of the air collection box 18 through a connecting pipe. Multiple strip-shaped air ducts 11 are equidistantly opened inside the liquid storage tank 10, and the interior of each strip-shaped air duct 11 is connected to the interior of the air collection box 18. A PLC controller 20 is located on one side of the upper middle part of the liquid storage tank 10. The PLC controller 20 adjusts the operating power of the cooling circulation pump 19 and the variable frequency fan 28 in real time according to the data from the temperature sensor.

[0034] When the temperature of the cooling water solution is detected to be greater than 90 degrees Celsius, the PLC controller 20 on the storage tank 10 will automatically control the cooling circulation pump 19 to increase the injection flow rate and circulation speed of the coolant. At the same time, the variable frequency fan 28 at the bottom of the storage tank 10 will be started. The variable frequency fan 28 injects gas into the air collection box 18 through the connecting pipe. The gas entering the air collection box 18 is discharged into the external environment through the various strip air ducts 11 in the storage tank 10. While the gas in the air collection box 18 is discharged through the strip air ducts 11, the gas in the strip air ducts 11 absorbs the heat generated by the cooling water solution as it flows, and then discharges it into the external environment. This method of accelerating the air flow in the strip air ducts 11 helps to cool the cooling water solution in the two chambers of the strip air ducts 11.

[0035] When the temperature sensor in the spiral flow channel 29 detects that the temperature is below 80 degrees Celsius, the PLC controller 20 controls the reduction of the circulation flow of the cooling circulation pump 19 and simultaneously shuts down the variable frequency fan 28 to avoid excessive cooling and hardening of the rubber material, thereby completing the open mixing and cooling treatment of the fluororubber raw material.

[0036] Due to the compartmentalized design of the liquid storage tank 10, after the front roller 13 rotates once or several times, the cooled aqueous solution heated in the spiral flow channel 29 inside the front roller 13 is injected into the heated discharge chamber. The cooled aqueous solution in the cooling inlet chamber re-enters the spiral flow channel 29 for cooling. If cooling is not required, the spiral flow channel 29 inside the front roller 13 is not connected to the cooling inlet chamber and the heated discharge chamber in the liquid storage tank 10, and the aqueous solution in the spiral flow channel 29 is not flowing. Conversely, when cooling is required, the above operation can be performed.

[0037] Please see the appendix Figure 7 - Appendix Figure 9 The mixing and stripping mechanism is located in the middle and front part inside the frame 15 and is used to assist in the stripping of the gel-like rubber raw material during the open milling process. The mixing and stripping mechanism includes an open mounting base 9. The open mounting base 9 is fixedly connected to the front and middle part of the inner side of the frame 15. A slot 31 is opened at the rear and middle part of the bottom of the open mounting base 9. An inclined scraper 30 is fixedly connected to the rear end of the inner side of the slot 31. A high-pressure jet exhaust 32 is provided at the rear end of the bottom of the open mounting base 9. A micro air pump 38 is provided at the middle of the rear end of the open mounting base 9. The exhaust end of the micro air pump 38 is connected to the air inlet of the high-pressure jet exhaust 32 through a connecting pipe.

[0038] When the mixing and stripping mechanism is started, due to the high polarity and high viscosity of fluororubber, it tends to stick tightly to the roller surface during the mixing stage after the initial milling. Manual stripping is inefficient and can easily cause burns. Furthermore, uneven force can also lead to deformation of the rubber compound. Therefore, during the mixing and processing of fluororubber compounds, manual stripping is not recommended.

[0039] When the adhesive material adhering to the surface of the front roller 13 passes the bottom of the open-type mounting base 9, the inclined scraper 30 at the bottom of the open-type mounting base 9 scrapes off the adhesive material on its surface. The scraped adhesive material then enters the open-type mounting base 9 through the slot 31 at the bottom of the open-type mounting base 9. At the same time, while the inclined scraper 30 scrapes the adhesive material on the roller surface of the front roller 13, the micro air pump 38 on the open-type mounting base 9 is started. At the same time as the micro air pump 38 is started, high-pressure gas is injected into the high-pressure air jet outlet 32 ​​at the bottom of the open-type mounting base 9 through the connecting pipe. The high-pressure gas entering the high-pressure air jet outlet 32 ​​is then discharged into the gap between the bottom of the inclined scraper 30 and the roller surface, thereby assisting in peeling off the adhesive material on the roller surface.

[0040] The mixing and stripping mechanism also includes a friction synchronous wheel 33. The friction synchronous wheel 33 is rotatably connected to one side of the bottom center of the open mounting base 9. The drive synchronous wheel 34 is rotatably connected to one side of the inside of the open mounting base 9. The outer wall surface of the friction synchronous wheel 33 is in contact with the outer wall surface of the drive synchronous wheel 34. A U-shaped support seat 39 is provided on the side of the inside of the open mounting base 9 away from the drive synchronous wheel 34. A guide plate 36 is provided on one side of the bottom of the inside of the open mounting base 9. A hexagonal winding post 37 is provided inside the open mounting base 9. The hexagonal end of the hexagonal winding post 37 is inserted into the inside of the drive synchronous wheel 34, and the cylindrical end extends into the inside of the U-shaped support seat 39. A scraper ring seat 35 is slidably connected to the hexagonal winding post 37.

[0041] The adhesive material entering the open mounting base 9 through the bottom slot 31 is guided by the bottom guide plate 36 to the position of the hexagonal take-up column 37. At the same time, as the front roller 13 rotates, the friction synchronous wheel 33 at the bottom of the open mounting base 9 is driven to rotate. As the friction synchronous wheel 33 rotates, it drives the drive synchronous wheel 34 inside the open mounting base 9 to rotate synchronously. As the drive synchronous wheel 34 rotates, it drives the hexagonal take-up column 37 to rotate synchronously. As the hexagonal take-up column 37 is driven to rotate, the adhesive material on its surface is wrapped around the guide plate 36 by its edges and corners.

[0042] After the rubber material on the surface of the front roller 13 is scraped off, the worker takes out the hexagonal take-up column 37 from the open mounting seat 9, and then moves the scraper ring seat 35 on it to push the rubber material on the surface of the hexagonal take-up column 37 back between the front roller 13 and the rear roller 16 for re-mixing. After that, the worker puts the hexagonal take-up column 37 back into the open mounting seat 9 for subsequent peeling operations. This process is repeated to complete the auxiliary peeling treatment of the roller surface during the mixing process.

[0043] Please see the appendix Figure 10 - Appendix Figure 12 The uniform mixing mechanism is located on the inner top of the frame 15 and is used to mix the rubber raw materials and powdered compounding agents after open milling.

[0044] The uniform mixing mechanism includes a lower processing seat 7. The lower processing seat 7 is fixedly connected to the middle of the top inner side of the frame 15. A centrifugal processing chamber 45 is opened in the middle of the inner side of the lower processing seat 7. A stirring seat 44 is rotatably connected inside the centrifugal processing chamber 45. A second drive motor 40 is set in the middle of one end of the lower processing seat 7, and the output end of the second drive motor 40 is connected to the middle of one end of the stirring seat 44. A plug-in feeding box 41 is set in the upper middle of the front side of the lower processing seat 7. An electrically controlled sealing seat 46 for controlling the flow of powder compounding agent is set in the middle of the centrifugal processing chamber 45. A multi-stage sieve plate 47 with decreasing aperture is set in the lower middle of the centrifugal processing chamber 45. An ultrasonic generator 21 is set in the middle of the rear side of the lower processing seat 7.

[0045] When the uniform mixing mechanism is started, due to the strong polarity of fluororubber, conventional powder formulations are prone to agglomeration due to electrostatic adsorption. Direct addition will lead to uneven dispersion. Therefore, after the fluororubber compound has undergone multiple mixing processes by the mixing and stripping mechanism, the operator adds the required powder additive into the centrifugal processing chamber 45 in the lower processing seat 7 through the plug-in feeding box 41. Then, the drive motor 40 on the lower processing seat 7 is started. While the shaft of the drive motor 40 is rotating, it drives the stirring seat 44 in the centrifugal processing chamber 45 to rotate. While the stirring seat 44 is rotating, the centrifugal force generated by it initially disperses the agglomerates of powder formed by electrostatics.

[0046] The uniform mixing mechanism also includes a guide discharge box 42. The guide discharge box 42 is located at the bottom center of the lower processing seat 7. Multiple guide cavities 48 are equidistantly arranged inside the guide discharge box 42. A discharge control plate 43 for controlling the closed state of the guide cavities 48 is located in the lower inner part of the guide discharge box 42. A strip vacuum generator 17 is located in the middle rear part of the guide discharge box 42, and the vacuum end of the strip vacuum generator 17 is connected to the interior of each guide cavity 48. A collection tray 14 is slidably connected to the lower inner part of the frame 15.

[0047] Then, the operator controls the electrically controlled sealed seat 46 inside the centrifugal processing chamber 45 via the control equipment, causing the powdered compounding agent, after being dispersed in the upper part of the centrifugal processing chamber 45, to flow to the lower part of the centrifugal processing chamber 45. At the same time, the ultrasonic generator 21 on the lower processing seat 7 is activated. As the ultrasonic generator 21 is activated, it breaks down the micron-sized agglomerates in the powdered compounding agent through high-frequency vibration and the cooperation of the multi-stage sieve plate 47. Then, the dispersed powdered compounding agent enters the guide cavity 48 in the guide discharge box 42, thus completing the secondary dispersion treatment of the powdered compounding agent. Simultaneously, the strip vacuum generator 17 on the guide discharge box 42 is started. When the strip vacuum generator 17 is started, a small negative pressure is formed inside the guide cavity 48. Then, the operator pulls and separates the discharge control plate 43 on the guide discharge box 42, so that the bottom of the guide discharge box 42 is opened. Through the negative pressure formed by the strip vacuum generator 17 in the guide cavity 48, the powder is evenly sucked in and dispersed onto the rubber compound being mixed between the front roller 13 and the rear roller 16, thereby completing the uniform mixing process of the rubber compound and the powder compounding agent.

[0048] Finally, the rubber material generated after the mixing process is completed can be temporarily stored in the collection tray 14. After a certain amount is collected, it can be used for subsequent rubber tube extrusion processing. At the same time, the collection tray 14 can also collect the residual material that falls between the front roller 13 and the rear roller 16 or on the surface, so as to reuse it and reduce the waste of raw materials.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rubber hose processing mixing device, characterized in that, include A base frame (1) is provided on one side of the top of the base frame (1). The upper inner side of the frame (15) is provided with a front roller (13) and a rear roller (16) for rubber refining. The front roller (13) and the rear roller (16) generate relative rotational motion through synchronous gears. The front roller (13) generates heat to process the rubber material during rubber refining and mixing. The spacing adjustment handwheel (12) is located on the upper middle part of both sides of the front end of the frame (15). The spacing adjustment handwheel (12) adjusts the spacing between the front roller (13) and the rear roller (16). An electrical control box (2) is installed on one side of the top center of the base frame (1). The electrical control box (2) controls the operating status of the overall electrical equipment. A raw rubber preheating mechanism, which is located on the top of the frame (15), is used to preheat the raw fluororubber granules before open milling. The open mill cooling mechanism is located on the upper middle part of one side of the frame (15) and is used for the open milling of fluororubber granule raw materials after preheating and multiple cooling treatments during the open milling process. The mixing and stripping mechanism is located in the middle front part inside the frame (15) and is used to assist in the stripping of the rubber raw material during the open milling process. The uniform mixing mechanism is located on the inner top of the frame (15) and is used to mix the rubber raw materials and powdered compounding agents after open milling.

2. The rubber hose processing mixing equipment according to claim 1, characterized in that, The raw rubber preheating mechanism includes an upper processing seat (8). The upper processing seat (8) is installed at the top center of the frame (15). A granule hopper (6) is provided on one side of the top of the upper processing seat (8), and the interior of the granule hopper (6) is connected to the interior of the upper processing seat (8). A heat-conducting oil chamber (27) is provided inside the upper processing seat (8). The interior of the upper processing seat (8) is divided into two stages from the end near the granule hopper (6): a softening section and a plasticizing section. Heaters (22) are provided on both sides of the middle of the front end of the upper processing seat (8). The heaters (22) heat the heat-conducting oil in the heat-conducting oil chamber (27). An oil temperature controller (23) for controlling the temperature of the heat-conducting oil in the heat-conducting oil chamber (27) is provided at the middle of the rear end of the upper processing seat (8).

3. The rubber hose processing mixing equipment according to claim 2, characterized in that, The raw rubber preheating mechanism also includes an installation rod (24). The installation rod (24) is rotatably connected to the inner middle of the upper processing seat (8). The outer wall of the installation rod (24) is provided with a spiral conveyor seat (25) and an agitator (26) for driving the fluororubber raw rubber particles to flip and move. A drive motor (5) is provided in the middle of one side of the upper processing seat (8), and the output end of the drive motor (5) passes through the upper processing seat (8) and is connected to the middle of one end of the installation rod (24). A discharge seat (49) is provided on the bottom side of the upper processing seat (8) away from the particle hopper (6). The discharge seat (49) discharges the fluororubber raw rubber particles that have been processed by the plasticizing section into the space between the front roller (13) and the rear roller (16) for subsequent open mill processing.

4. The rubber hose processing mixing equipment according to claim 1, characterized in that, The open mill cooling mechanism includes a main motor (3), the main motor (3) is provided on one side of the top of the base frame (1), the reducer (4) is provided in the middle and rear part of one side of the electrical control box (2), and the output end of the main motor (3) is connected to the power input end of the reducer (4), and the power input end of the reducer (4) is connected to the middle part of one end of the rear roller (16).

5. The rubber hose processing mixing equipment according to claim 4, characterized in that, The open mill cooling mechanism also includes a liquid storage tank (10). The liquid storage tank (10) is located on the top of the side of the frame (15) away from the main motor (3). The inner middle of the liquid storage tank (10) is divided into two independent chambers, a cooling inlet chamber and a heating outlet chamber, by a partition. A cooling circulation pump (19) is located on the middle of one side of the liquid storage tank (10). The cooling circulation pump (19) connects the two chambers, the cooling inlet chamber and the heating outlet chamber, through a connecting pipe. A spiral flow channel (29) is provided inside the front roller (13). A temperature sensor is provided at the end of the spiral flow channel (29).

6. The rubber hose processing mixing equipment according to claim 5, characterized in that, The open-mill cooling mechanism also includes an air collection box (18). The air collection box (18) is located in the middle of the rear side of the liquid storage tank (10). A variable frequency fan (28) is located in the middle of the bottom end of the liquid storage tank (10). The exhaust end of the variable frequency fan (28) is connected to the interior of the air collection box (18) through a connecting pipe. Multiple strip-shaped air ducts (11) are equidistantly opened inside the liquid storage tank (10), and the interior of each strip-shaped air duct (11) is connected to the interior of the air collection box (18). A PLC controller (20) is located on one side of the upper middle part of the liquid storage tank (10). The PLC controller (20) adjusts the operating power of the cooling circulation pump (19) and the variable frequency fan (28) in real time according to the data of the temperature sensor.

7. The rubber hose processing mixing equipment according to claim 1, characterized in that, The mixing and stripping mechanism includes an open mounting base (9). The open mounting base (9) is fixedly connected to the front and middle part of the inner side of the frame (15). A slot (31) is opened at the rear and middle part of the bottom end of the open mounting base (9). An inclined scraper (30) is fixedly connected to the rear end of the inner side of the slot (31). A high-pressure jet exhaust (32) is provided at the rear end of the bottom end of the open mounting base (9). A micro air pump (38) is provided at the middle of the rear end of the open mounting base (9). The exhaust end of the micro air pump (38) is connected to the air inlet of the high-pressure jet exhaust (32) through a connecting pipe.

8. The rubber hose processing mixing equipment according to claim 7, characterized in that, The mixing and stripping mechanism also includes a friction synchronous wheel (33). The friction synchronous wheel (33) is rotatably connected to one side of the bottom middle of the open mounting base (9). The drive synchronous wheel (34) is rotatably connected to one side of the inside of the open mounting base (9). The outer wall surface of the friction synchronous wheel (33) is in contact with the outer wall surface of the drive synchronous wheel (34). A U-shaped support seat (39) is provided on the side of the inside of the open mounting base (9) away from the drive synchronous wheel (34). A guide plate (36) is provided on one side of the bottom of the inside of the open mounting base (9). A hexagonal winding column (37) is provided inside the open mounting base (9). The hexagonal end of the hexagonal winding column (37) is inserted into the inside of the drive synchronous wheel (34), and the cylindrical end extends into the inside of the U-shaped support seat (39). A scraper ring seat (35) is slidably connected to the hexagonal winding column (37).

9. A rubber hose processing mixing device according to claim 1, characterized in that, The uniform mixing mechanism includes a lower processing seat (7), which is fixedly connected to the middle of the top inner side of the frame (15). A centrifugal processing chamber (45) is opened in the middle inner side of the lower processing seat (7). A stirring seat (44) is rotatably connected inside the centrifugal processing chamber (45). A second drive motor (40) is provided in the middle of one end of the lower processing seat (7), and the output end of the second drive motor (40) is connected to the middle of one end of the stirring seat (44). A plug-in feeding box (41) is provided in the upper middle front side of the lower processing seat (7). An electrically controlled sealing seat (46) for controlling the flow of powder compounding agent is provided in the middle of the centrifugal processing chamber (45). A multi-stage sieve plate (47) with decreasing aperture is provided in the lower middle middle of the centrifugal processing chamber (45). An ultrasonic generator (21) is provided in the middle rear side of the lower processing seat (7).

10. A rubber hose processing mixing device according to claim 9, characterized in that, The uniform mixing mechanism also includes a guide discharge box (42). The guide discharge box (42) is provided at the bottom center of the lower processing seat (7). Multiple guide cavities (48) are equidistantly opened inside the guide discharge box (42). A discharge control plate (43) for controlling the closed state of the guide cavities (48) is provided in the lower inner side of the guide discharge box (42). A strip vacuum generator (17) is provided in the middle rear side of the guide discharge box (42). The vacuum end of the strip vacuum generator (17) is connected to the interior of each guide cavity (48). A collection tray (14) is slidably connected to the lower inner side of the frame (15).

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