Low-temperature fluororubber masterbatch vacuum mixing and processing equipment

Abstract

The present invention relates to the technical field of fluororubber vacuum mixing, and specifically relates to a vacuum mixing processing device for low-temperature fluororubber mixing rubber. Its technical solution is as follows: It includes a flipping bracket, and a cooling sleeve is rotatably installed on the flipping bracket. Mixing sleeves are inserted and installed at the upper and lower ends of the cooling sleeve. A mixing turntable is rotatably installed on the inner wall of the mixing sleeve. An extrusion and mixing mechanism is installed in the rectangular opening of the mixing turntable. A dividing mechanism is slidably installed on the inner wall of the cooling sleeve. The beneficial effect of the present invention is that by starting the extrusion and mixing mechanism in the mixing sleeve at the upper end of the cooling sleeve, the fluororubber body and various materials are flattened and mixed. Then, the flattened colloid is divided into thin strips by the dividing mechanism. Then, the mixing turntables in the mixing sleeves at the upper and lower ends of the cooling sleeve are rotated in the reverse direction, driving the extrusion and mixing mechanism to twist the thin strip colloid so that it is twisted into one strand and mixed, so as to achieve the effect of fully stretching and plasticizing the colloid with poor fluidity in a low-temperature environment.

Description

Technical Field

[0001] The present invention relates to the technical field of fluororubber vacuum mixing, and particularly to a vacuum mixing processing device for low-temperature fluororubber mixing rubber. Background Art

[0002] Vacuum mixing processing of low-temperature fluororubber mixing rubber is a processing technology that uses a vacuum environment for fluororubber mixing. This technology uses a vacuum environment to avoid the generation of bubbles during the mixing process, remove moisture and air in the raw materials, thereby improving the uniformity and physical properties of the mixing rubber, and is particularly suitable for applications in fields with extremely high requirements for sealing, chemical resistance, and high-temperature performance, such as the aviation, automotive, and electronics industries; vacuum mixing helps to remove bubbles in the rubber compound and improve product quality, while low-temperature mixing helps to avoid the influence of high temperature on fluororubber and maintain its good physical properties;

[0003] Traditional vacuum mixers usually adopt mixing methods such as screws, stirring paddles, or rollers. During the mixing process, raw material aggregation is likely to occur, and uneven mixing may exist. Especially when dealing with high-viscosity materials such as fluororubber, it is difficult to fully stretch and plasticize the raw materials, the contact area between the colloidal materials is limited, which is not conducive to the uniform dispersion of additives, resulting in an extended time for uniform mixing and greatly affecting the mixing efficiency of fluororubber;

[0004] And because fluororubber will degrade in a high-temperature environment, during the entire mixing process, the temperature of the fluororubber mixing rubber needs to be maintained in a relatively low temperature range. However, at low temperatures, the fluidity of fluororubber becomes poor, and the stirring methods in traditional equipment usually rely on the fluidity of the materials, which makes traditional equipment likely to face the risk of insufficient mixing, which may directly lead to insufficient mixing of fluororubber, and it may be difficult for fillers, plasticizers, etc. to be evenly dispersed, thus possibly affecting the uniformity and performance of the final product;

[0005] Therefore, it is very necessary to invent a vacuum mixing processing device for low-temperature fluororubber mixing rubber. Summary of the Invention

[0006] To achieve the above object, the present invention provides the following technical solution: a vacuum mixing processing device for low-temperature fluororubber mixing rubber, including a flipping bracket, on which a cooling chamber is installed. The cooling chamber includes a cooling sleeve, which is rotatably installed on the flipping bracket. The upper and lower ends of the cooling sleeve are inserted and installed with mixing sleeves. One end of the mixing sleeve away from the cooling sleeve is rotatably installed with a sealing flap, and the other end of the mixing sleeve away from the cooling sleeve is fixedly installed with a bottom cover. A vacuum pump is fixedly installed on the outer wall of the mixing sleeve where the sealing flap is rotatably installed. A mixing turntable is rotatably installed on the inner wall of the mixing sleeve. On the upper and lower sides of the mixing turntable, a first mixing plate and a second mixing plate are respectively fixedly installed. Rectangular openings are provided in the middle of the first mixing plate, the second mixing plate, and the mixing turntable. An extrusion mixing mechanism is installed in the rectangular opening of the mixing turntable. A dividing mechanism is slidably installed on the inner wall of the cooling sleeve, and the dividing mechanism is used to divide the colloid flattened by the extrusion mixing mechanism into thin strips.

[0007] Preferably, the first mixing plate is fixedly installed on the side of the mixing turntable away from the cooling sleeve, the second mixing plate is fixedly installed on the side of the mixing turntable close to the cooling sleeve, and the sides of the first mixing plate and the second mixing plate away from the mixing turntable are set as concave curved surfaces.

[0008] Preferably, the extrusion mixing mechanism includes mixing rollers. Two mixing rollers are rotatably installed in the rectangular opening of the mixing turntable. Sealing rubber rings are fixedly bonded to the inner wall of the mixing turntable opening near both ends of the mixing rollers. Driving gear discs are fixedly installed at both ends of the mixing rollers. The driving gear discs penetrate through the inner wall of the mixing turntable and are rotatably connected to the mixing turntable. Tooth grooves are provided on the surface of the driving gear discs.

[0009] Preferably, the extrusion mixing mechanism includes a third motor, which is fixedly installed on the first mixing plate. The output end of the third motor extends to the middle of both sides of the mixing turntable where the driving gear discs are located. A fourth gear is fixedly installed at the output end of the third motor. Two groups of second gears and third gears are rotatably installed on both sides of the mixing turntable where the driving gear discs are located. The fourth gear is meshed with two groups of third gears. The second gear and the third gear in the same group are meshed with each other. Two groups of second gears are respectively meshed with the driving gear discs of the two mixing rollers.

[0010] Preferably, a sleeve convex groove is provided in the middle of the mixing sleeve. A toothed ring is fixedly installed on the inner wall of the sleeve convex groove. The mixing turntable has a rounded rectangular structure. Arc-shaped side plates are fixedly installed on the four sides of the mixing turntable. The arc-shaped side plates and the four corners of the mixing turntable are rotatably installed inside the toothed ring.

[0011] Preferably, second motors are fixedly installed at the four corners of the top surface of the mixing turntable. The output end of the lower part of the second motor penetrates through the mixing turntable and fixedly installs a first gear. The first gear penetrates through the side walls at the four corners of the mixing turntable, and the first gear is meshed and connected with the inner side of the toothed ring.

[0012] Preferably, the dividing mechanism includes a sliding ring. The sliding ring is slidably installed on the inner wall of the cooling sleeve. Circular protrusions are fixedly installed on both sides of the inner wall of the sliding ring. Magnetic swing arms are rotatably installed on the circular protrusions. A dividing rack is fixedly installed between the magnetic swing arms on both sides. A number of cutter teeth are arranged on the dividing rack. The dividing rack can be attached to the gap between the two mixing rollers.

[0013] Preferably, the dividing mechanism includes electromagnets. The electromagnets are embedded on both sides of the concave curved surface of the second mixing disc. The electromagnets can be magnetically adsorbed with the magnetic swing arms. A control terminal is fixedly installed on one side of the electromagnet close to the inner wall of the second mixing disc.

[0014] Preferably, rotating protrusions are arranged on the outer walls on both sides of the cooling sleeve. The rotating protrusions are rotatably installed on the flipping bracket. One of the rotating protrusions is fixedly connected to the first motor, and a water inlet and a water outlet are arranged on the other rotating protrusion.

[0015] Preferably, a number of cooling inner cavities are arranged inside the cooling sleeve. The water inlet penetrates through the cooling sleeve and communicates with one of the cooling inner cavities. The water outlet also penetrates through the cooling sleeve and communicates with one of the cooling inner cavities. Communication holes are arranged between the cooling inner cavities. No communication holes are arranged between the cooling inner cavities connected to the water outlet and the water inlet respectively.

[0016] The beneficial effects of the present invention are as follows: Add fluororubber raw materials and various mixing materials into the equipment. Start the extrusion and mixing mechanism in the mixing sleeve at the upper end of the cooling sleeve to flatten and mix the fluororubber body and various materials. Then, divide the flattened colloid into thin strips through the dividing mechanism. Subsequently, start the extrusion and mixing mechanism in the mixing sleeve at the lower end of the cooling sleeve to press the ends of the thin strip colloid. Then, rotate the mixing turntables in the mixing sleeves at the upper and lower ends of the cooling sleeve in the reverse direction to drive the extrusion and mixing mechanism to twist the thin strip colloid so that it is twisted into one strand and mixed. Continue to start the extrusion and mixing mechanism in the lower mixing sleeve to flatten and mix the twisted colloid. Then, flip the cooling sleeve to drive the mixing sleeves at both ends to flip. Repeat the above operations until the fluororubber raw materials and various mixing materials are completely mixed, so as to achieve the effect of fully stretching and plasticizing the colloid with poor fluidity in a low-temperature environment. The reaction contact area between the colloid materials after being divided into thin strips is greatly increased, which is beneficial to evenly disperse the additives, greatly shortens the mixing time, and effectively improves the mixing efficiency of fluororubber. Description of the Drawings

[0017] Figure 1A side view provided for the present invention;

[0018] Figure 2 The other side view provided for the present invention;

[0019] Figure 3 A sectional view of the cooling sleeve and the kneading sleeve provided for the present invention;

[0020] Figure 4 A schematic diagram of the internal structure of the kneading sleeve provided for the present invention;

[0021] Figure 5 A schematic diagram of the structure of the extrusion and kneading mechanism provided for the present invention;

[0022] Figure 6 A sectional view of the second kneading disc provided for the present invention;

[0023] Figure 7 A schematic diagram of the rotational connection of the kneading roller provided for the present invention;

[0024] Figure 8 An exploded view of the first and second kneading discs provided for the present invention;

[0025] Figure 9 An exploded view of the extrusion and kneading mechanism provided for the present invention;

[0026] Figure 10 A side view of the extrusion and kneading mechanism provided for the present invention;

[0027] Figure 11 A schematic diagram of the position of the splitting mechanism provided for the present invention;

[0028] Figure 12 A schematic diagram of the structure of the splitting mechanism provided for the present invention;

[0029] Figure 13 A schematic diagram of the flipping of the splitting mechanism provided for the present invention;

[0030] Figure 14 A cross-sectional view of the cooling chamber provided for the present invention.

[0031] In the figure: vacuum pump 10, cooling sleeve 111, water inlet 112, water outlet 113, cooling cavity 114, communication hole 115, rotating protrusion 116, kneading sleeve 12, sleeve groove 13, sealing flap 14, bottom cover 15, flipping bracket 16, first motor 17, toothed ring 18, first kneading disk 19, second kneading disk 20, kneading turntable 21, kneading roller 22, sealing rubber ring 23, second motor 24, first gear 25, driving toothed disk 261, second gear 262, third gear 263, fourth gear 264, third motor 265, arc-shaped side plate 27, sliding ring 281, circular protrusion 282, magnetic swing arm 283, dividing rack 284, electromagnet 285, control terminal 286. Detailed implementation manners

[0032] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0033] Embodiment 1, as Figure 1 - Figure 4 shown, the low-temperature fluororubber kneaded rubber vacuum kneading processing equipment in the first aspect embodiment of the present invention includes a flipping bracket 16, a cooling chamber is installed on the flipping bracket 16, the cooling chamber includes a cooling sleeve 111, the cooling sleeve 111 is rotatably installed on the flipping bracket 16, the upper and lower ends of the cooling sleeve 111 are inserted and installed with a kneading sleeve 12, one end of the kneading sleeve 12 away from the cooling sleeve 111 is rotatably installed with a sealing flap 14, the other end of the kneading sleeve 12 away from the cooling sleeve 111 is fixedly installed with a bottom cover 15, a vacuum pump 10 is fixedly installed on the outer wall of the kneading sleeve 12 where the sealing flap 14 is rotatably installed, a kneading turntable 21 is rotatably installed on the inner wall of the kneading sleeve 12, a first kneading disk 19 and a second kneading disk 20 are respectively fixedly installed on the upper and lower sides of the kneading turntable 21, rectangular openings are provided in the middle of the first kneading disk 19, the second kneading disk 20 and the kneading turntable 21, an extrusion kneading mechanism is installed in the rectangular opening of the kneading turntable 21, and a dividing mechanism is slidably installed on the inner wall of the cooling sleeve 111, and the dividing mechanism is used to divide the colloid flattened by the extrusion kneading mechanism into thin strips.

[0034] In the above embodiment, it should be noted that in the initial state, the kneading sleeve 12 connected to the sealing flap 14 faces upward, the dividing mechanism sliding on the inner wall of the cooling sleeve 111 is located in the upper part of the cooling sleeve 111, and the vacuum pump 10 has the function of pumping out the air in the kneading sleeve 12, which is the prior art well known in the art;

[0035] The staff rotates and opens the sealed flip cover 14, adds the fluororubber raw material and each mixing material into the mixing sleeve 12 at the upper end of the cooling sleeve 111. Then, the cooling chamber is started to reduce the internal temperature of the cooling sleeve 111. At the same time, the vacuum pump 10 is started to evacuate the air in the cooling sleeve 111 and the mixing sleeve 12 to form a vacuum. By starting the extrusion and mixing mechanism in the mixing sleeve 12 at the upper end of the cooling sleeve 111, the fluororubber body and each material are flattened and mixed. Then, the flattened colloid is divided into thin strips by the dividing mechanism. Subsequently, the extrusion and mixing mechanism in the mixing sleeve 12 at the lower end of the cooling sleeve 111 is started to press the end of the thin strip colloid. Then, the mixing turntables 21 in the mixing sleeves 12 at the upper and lower ends of the cooling sleeve 111 rotate in the opposite direction, and the mixing turntables 21 drive the extrusion and mixing mechanism to twist the thin strip colloid so that it is twisted into one strand and mixed. The extrusion and mixing mechanism in the lower mixing sleeve 12 is continuously started to flatten and mix the twisted colloid. The flattened and mixed rubber strips are stacked in the bottom cover 15. The dividing mechanism is slid to the lower part of the cooling sleeve 111. Then, the cooling chamber on the flipping bracket 16 is flipped, so that the cooling sleeve 111 drives the mixing sleeves 12 at both ends to flip. Then, the above operations are continuously repeated until the fluororubber raw material and each mixing material are completely mixed, so as to achieve the effect of fully stretching and plasticizing the colloid with poor fluidity in a low-temperature environment. The reaction contact area between the colloid materials after being divided into thin strips is greatly increased, which is beneficial to the uniform dispersion of the additive, greatly shortens the mixing time, and effectively improves the mixing efficiency of the fluororubber.

[0036] Example 2, as Figure 4 - Figure 10As shown, the vacuum mixing processing equipment for low-temperature fluororubber mixing rubber includes Embodiment 1. In addition, the first mixing disk 19 is fixedly installed on the side of the mixing turntable 21 away from the cooling sleeve 111, and the second mixing disk 20 is fixedly installed on the side of the mixing turntable 21 close to the cooling sleeve 111. The sides of the first mixing disk 19 and the second mixing disk 20 away from the mixing turntable 21 are set as concave curved surfaces. The extrusion and mixing mechanism includes mixing rollers 22. Two mixing rollers 22 are rotatably installed in the rectangular opening of the mixing turntable 21. Sealing rubber rings 23 are fixedly bonded to the inner wall of the opening of the mixing turntable 21 near both ends of the mixing rollers 22. Driving gear disks 261 are fixedly installed at both ends of the mixing rollers 22. The driving gear disks 261 penetrate through the inner wall of the mixing turntable 21 and are rotatably connected to the mixing turntable 21. Tooth grooves are arranged on the surface of the driving gear disks 261. The extrusion and mixing mechanism includes a third motor 265. The third motor 265 is fixedly installed on the first mixing disk 19. The output end of the third motor 265 extends to the middle parts of both sides of the mixing turntable 21 where the driving gear disks 261 are located. A fourth gear 264 is fixedly installed at the output end of the third motor 265. Two groups of second gears 262 and third gears 263 are rotatably installed on both sides of the mixing turntable 21 where the driving gear disks 261 are located. The fourth gear 264 is meshed and connected with the two groups of third gears 263. The second gears 262 and the third gears 263 in the same group are meshed and connected. The two groups of second gears 262 are respectively meshed and connected with the driving gear disks 261 of the two mixing rollers 22.

[0037] In the above embodiment, it should be noted that the concave curved surfaces of the first mixing disk 19 and the second mixing disk 20 have the function of guiding the fluororubber raw material and each mixing material to slide between the two mixing rollers 22; the third motor 265 is externally connected to a power supply and a control system. By starting the third motor 265 to drive the fourth gear 264 to rotate, the fourth gear 264 simultaneously drives the third gears 263 on the upper and lower sides to rotate in opposite directions. The third gears 263 in the same group drive the second gears 262 to mesh and rotate, and the second gears 262 then drive the driving gear disks 261 to rotate, so as to achieve the effect of driving the two mixing rollers 22 to rotate in opposite directions to extrude and mix the fluororubber raw material and each mixing material.

[0038] Embodiment 3, as Figure 4 - Figure 7 As shown, the vacuum mixing processing equipment for low-temperature fluororubber mixing rubber includes Embodiment 1. In addition, a sleeve convex groove 13 is arranged in the middle of the mixing sleeve 12. A toothed ring 18 is fixedly installed on the inner wall of the sleeve convex groove 13. The mixing turntable 21 has a rounded rectangular structure. Arc-shaped side plates 27 are fixedly installed on the four sides of the mixing turntable 21. The arc-shaped side plates 27 and the four corners of the mixing turntable 21 are rotatably installed inside the toothed ring 18. Second motors 24 are fixedly installed at the four corners of the top surface of the mixing turntable 21. The output ends of the second motors 24 at the lower ends penetrate through the mixing turntable 21 and a first gear 25 is fixedly installed. The first gear 25 penetrates through the side walls of the four corners of the mixing turntable 21. The first gear 25 is meshed and connected with the inner side of the toothed ring 18.

[0039] In the above embodiments, it should be noted that the arc-shaped side plate 27 functions to have a gap between the kneading turntable 21 and the toothed ring 18. The arc-shaped side plate 27 supplements the kneading turntable 21 into a disc structure, which not only protects the internal gear structure but also enables the kneading turntable 21 to rotate more smoothly. The second motor 24 is externally connected to a power source and a control system. By starting the second motor 24, the first gear 25 is driven to rotate. The first gear 25 is meshed and connected to the toothed ring 18 to achieve the effect of driving the kneading turntable 21 to rotate along the sleeve groove 13 in the middle of the kneading sleeve 12.

[0040] Embodiment 4, as Figure 11 - Figure 13 shown, a low-temperature fluororubber masterbatch vacuum kneading processing device includes Embodiment 2. In addition, the dividing mechanism includes a sliding ring 281 which is slidably installed on the inner wall of the cooling sleeve 111. Circular protrusions 282 are fixedly installed on both sides of the inner wall of the sliding ring 281. A magnetic swing arm 283 is rotatably installed on the circular protrusions 282. A dividing rack 284 is fixedly installed between the magnetic swing arms 283 on both sides. A number of cutter teeth are arranged on the dividing rack 284. The dividing rack 284 can be attached to the gap between the two kneading rollers 22. The dividing mechanism includes an electromagnet 285 which is embedded on both sides of the concave curved surface of the second kneading disc 20. The electromagnet 285 can be magnetically adsorbed to the magnetic swing arm 283. A control terminal 286 is fixedly installed on the side of the electromagnet 285 close to the inner wall of the second kneading disc 20.

[0041] In the above embodiments, it should be noted that the dividing rack 284 is composed of a number of sharp cutter teeth. The control terminal 286 is externally connected to a power source and is used to control the energization and de-energization of the electromagnet 285. In the initial state, the control terminal 286 on the second mixing disk 20 in the mixing sleeve 12 at the upper end of the cooling sleeve 111 controls the electromagnet 285 to be energized. The electromagnet 285 adsorbs the magnetic swing arm 283, so that the dividing rack 284 is fixed at the bottom gap between the two mixing rollers 22 in the mixing sleeve 12 at the upper end of the cooling sleeve 111; when the fluororubber raw material and each mixing material pass through the extrusion of the two mixing rollers 22, they will pass through the dividing rack 284 and be divided into thin strips; before the cooling sleeve 111 and the mixing sleeve 12 are turned over, the control terminal 286 controls the electromagnet 285 in the upper mixing sleeve 12 to be de-energized. The sliding ring 281 freely falls along the inner wall of the cooling sleeve 111 to the top of the lower mixing sleeve 12 under the influence of gravity. Subsequently, the magnetic swing arm 283 deflects downward by 180°, driving the dividing rack 284 to rotate to the top gap between the two mixing rollers 22 in the mixing sleeve 12 at the lower end of the cooling sleeve 111. Then, the control terminal 286 on the second mixing disk 20 in the lower mixing sleeve 12 is started to control the electromagnet 285 to be energized, and the lower electromagnet 285 adsorbs the magnetic swing arm 283 to achieve the effect of fixing the dividing rack 284. As the cooling sleeve 111 and the mixing sleeve 12 are turned over, the dividing rack 284 is turned over to the upper part again to repeat the cutting work.

[0042] Embodiment 5, as Figure 1 、 Figure 2 and Figure 14 shown, the low-temperature fluororubber masterbatch vacuum mixing and processing equipment includes Embodiment 1. In addition, rotating protrusions 116 are provided on the outer walls on both sides of the cooling sleeve 111. The rotating protrusions 116 are rotatably installed on the turning bracket 16. One of the rotating protrusions 116 is fixedly connected to the first motor 17. An inlet 112 and an outlet 113 are provided on the other rotating protrusion 116. A number of cooling cavities 114 are arranged inside the cooling sleeve 111. The inlet 112 penetrates through the cooling sleeve 111 and communicates with one of the cooling cavities 114. The outlet 113 also penetrates through the cooling sleeve 111 and communicates with one of the cooling cavities 114. Communication holes 115 are provided between the respective cooling cavities 114. No communication hole 115 is provided between the cooling cavities 114 connected to the outlet 113 and the inlet 112 respectively.

[0043] In the above embodiments, it should be noted that the first motor 17 is externally connected to a power supply and a control system, and the first motor 17 is started to drive the cooling sleeve 111 to rotate; the water inlet 112 and the water outlet 113 are externally connected to a circulating condenser, and the circulating condenser belongs to the prior art. The circulating condenser continuously injects condensed water into the cooling cavity 114 through the water inlet 112, and the condensed water flows through each cooling cavity 114 through the communication hole 115 and finally returns to the circulating condenser from the water outlet 113, so as to achieve the effect of circulating cooling the cooling sleeve 111 and keeping the inside of the cooling sleeve 111 at a low temperature.

[0044] The usage process of the present invention is as follows: Those skilled in the art rotate to open the sealing flap 14, add fluororubber raw materials and various mixing materials into the mixing sleeve 12 at the upper end of the cooling sleeve 111, close the sealing flap 14, start the vacuum pump 10 to evacuate the air in the cooling sleeve 111 and the mixing sleeve 12 to form a vacuum, and at the same time start the circulating condenser to continuously inject condensed water into the cooling cavity 114 through the water inlet 112. The condensed water flows through each cooling cavity 114 through the connecting hole 115 and finally returns to the circulating condenser from the water outlet 113 to circulate and cool the cooling sleeve 111, so that the inside of the cooling sleeve 111 remains at a low temperature; start the third motor 265 in the upper mixing sleeve 12 to drive the fourth gear 264 to rotate. The fourth gear 264 simultaneously drives the third gears 263 on the upper and lower sides to rotate in the opposite direction. The third gears 263 in the same group drive the second gears 262 to rotate meshingly. The second gears 262 drive the driving gear disc 261 to rotate, so that the two mixing rollers 22 in the upper mixing sleeve 12 rotate to extrude and mix the fluororubber raw materials and various mixing materials. After being extruded by the two mixing rollers 22, the fluororubber raw materials and various mixing materials will pass through the dividing rack 284 and be divided into thin strips. Then start the two mixing rollers 22 in the lower mixing sleeve 12 to rotate and clamp the ends of the thin strips. Then start the second motor 24 in the upper and lower mixing sleeves 12 to drive the first gear 25 to rotate. The first gear 25 is meshed and connected with the tooth ring 18, driving the upper and lower groups of mixing turntables 21 to rotate in the opposite direction along the sleeve groove 13 in the middle of the mixing sleeve 12. The mixing turntables 21 drive the mixing rollers 22 to twist the thin strip colloid so that it is twisted into one strand and mixed. Continue to start the third motor 265 in the lower mixing sleeve 12 to drive the fourth gear 264 to rotate. The fourth gear 264 simultaneously drives the third gears 263 on the upper and lower sides to rotate in the opposite direction. The third gears 263 in the same group drive the second gears 262 to rotate meshingly. The second gears 262 drive the driving gear disc 261 to rotate, so that the two mixing rollers 22 in the lower mixing sleeve 12 continue to flatten and mix the twisted colloid. The flattened and mixed rubber strips are stacked in the bottom cover 15; control the electromagnet 285 in the upper mixing sleeve 12 to be powered off through the control terminal 286. The sliding ring 281 freely falls along the inner wall of the cooling sleeve 111 to the top of the lower mixing sleeve 12 under the influence of gravity. Subsequently, the magnetic swing arm 283 deflects downward by 180°, driving the dividing rack 284 to rotate to the gap between the tops of the two mixing rollers 22 in the mixing sleeve 12 at the lower end of the cooling sleeve 111. Then start the control terminal 286 on the second mixing disc 20 in the lower mixing sleeve 12 to control the electromagnet 285 to be powered on. The lower electromagnet 285 adsorbs and fixes the magnetic swing arm 283. Then start the first motor 17 to drive the cooling sleeve 111 and the mixing sleeve 12 to turn up and down. Continue to repeat the above operations until the fluororubber raw materials and various mixing materials are completely mixed.

[0045] The above are only the preferred embodiments of the present invention. Any person skilled in the art may modify the present invention by using the technical solutions described above or modify it into equivalent technical solutions. Therefore, any simple modification or equivalent replacement made according to the technical solutions of the present invention shall fall within the scope of protection of the present invention.

Claims

1. Low-temperature fluororubber masterbatch vacuum mixing and processing equipment, including a flipping bracket (16), characterized in that: A cooling chamber is installed on the flipping bracket (16). The cooling chamber includes a cooling sleeve (111). The cooling sleeve (111) is rotatably installed on the flipping bracket (16). The upper and lower ends of the cooling sleeve (111) are inserted and installed with kneading sleeves (12). A sealing flap (14) is rotatably installed at one end of the kneading sleeve (12) away from the cooling sleeve (111), and a bottom cover (15) is fixedly installed at the other end of the kneading sleeve (12) away from the cooling sleeve (111). A vacuum pump (10) is fixedly installed on the outer wall of the kneading sleeve (12) where the sealing flap (14) is rotatably installed. A kneading turntable (21) is rotatably installed on the inner wall of the kneading sleeve (12). First kneading plates (19) and second kneading plates (20) are respectively fixedly installed on the upper and lower sides of the kneading turntable (21). Rectangular openings are provided in the middle of the first kneading plate (19), the second kneading plate (20) and the kneading turntable (21). An extrusion and kneading mechanism is installed in the rectangular opening of the kneading turntable (21). A dividing mechanism is slidably installed on the inner wall of the cooling sleeve (111). The dividing mechanism is used to divide the colloid flattened by the extrusion and kneading mechanism into thin strips.

2. The vacuum mixing processing equipment for low-temperature fluororubber masterbatch according to claim 1, wherein: The first kneading plate (19) is fixedly installed on the side of the kneading turntable (21) away from the cooling sleeve (111), and the second kneading plate (20) is fixedly installed on the side of the kneading turntable (21) close to the cooling sleeve (111). The sides of the first kneading plate (19) and the second kneading plate (20) away from the kneading turntable (21) are set as concave curved surfaces.

3. The vacuum mixing and processing equipment for low-temperature fluororubber masterbatch according to claim 2, characterized in that: The extrusion and kneading mechanism includes kneading rollers (22). The two kneading rollers (22) are rotatably installed in the rectangular opening of the kneading turntable (21). Sealing rubber rings (23) are fixedly bonded to the inner wall of the opening of the kneading turntable (21) near both ends of the kneading rollers (22). Driving gear discs (261) are fixedly installed at both ends of the kneading rollers (22). The driving gear discs (261) penetrate through the inner wall of the kneading turntable (21) and are rotatably connected to the kneading turntable (21). Tooth grooves are provided on the surface of the driving gear discs (261).

4. The vacuum mixing and processing equipment for low-temperature fluororubber masterbatch according to claim 3, characterized in that: The extrusion and kneading mechanism includes a third motor (265). The third motor (265) is fixedly installed on the first kneading plate (19). The output end of the third motor (265) extends to the middle of both sides of the kneading turntable (21) where the driving gear discs (261) are provided. A fourth gear (264) is fixedly installed at the output end of the third motor (265). Two groups of second gears (262) and third gears (263) are rotatably installed on both sides of the kneading turntable (21) where the driving gear discs (261) are provided. The fourth gear (264) is meshed and connected with the two groups of third gears (263). The second gears (262) and the third gears (263) in the same group are meshed and connected. The two groups of second gears (262) are respectively meshed and connected with the driving gear discs (261) of the two kneading rollers (22).

5. The vacuum mixing and processing equipment for low-temperature fluororubber masterbatch according to claim 1, characterized in that: A sleeve groove (13) is provided in the middle of the kneading sleeve (12). A toothed ring (18) is fixedly installed on the inner wall of the sleeve groove (13). The kneading turntable (21) has a rounded rectangular structure. Arc-shaped side plates (27) are fixedly installed on the four sides of the kneading turntable (21). The arc-shaped side plates (27) and the four corners of the kneading turntable (21) are rotatably installed inside the toothed ring (18).

6. The vacuum mixing and processing equipment for low-temperature fluororubber masterbatch according to claim 5, characterized in that: Second motors (24) are fixedly installed at the four corners of the top surface of the kneading turntable (21). The lower output ends of the second motors (24) penetrate through the kneading turntable (21) and fixedly install first gears (25). The first gears (25) penetrate through the side walls at the four corners of the kneading turntable (21). The first gears (25) are meshed and connected to the inner side of the toothed ring (18).

7. The vacuum mixing and processing equipment for low-temperature fluororubber masterbatch according to claim 3, characterized in that: The dividing mechanism includes a sliding ring (281). The sliding ring (281) is slidably installed on the inner wall of the cooling sleeve (111). Circular protrusions (282) are fixedly installed on both sides of the inner wall of the sliding ring (281). Magnetic swing arms (283) are rotatably installed on the circular protrusions (282). A dividing rack (284) is fixedly installed between the magnetic swing arms (283) on both sides. A number of cutter teeth are arranged on the dividing rack (284). The dividing rack (284) can be attached to the gap between the two kneading rollers (22).

8. The vacuum mixing and processing equipment for low-temperature fluororubber masterbatch according to claim 7, characterized in that: The dividing mechanism includes an electromagnet (285). The electromagnet (285) is embedded on both sides of the concave curved surface of the second kneading disk (20). The electromagnet (285) can be magnetically adsorbed to the magnetic swing arm (283). A control terminal (286) is fixedly installed on the side of the electromagnet (285) close to the inner wall of the second kneading disk (20).

9. The vacuum mixing and processing equipment for low-temperature fluororubber masterbatch according to claim 1, characterized in that: Rotating protrusions (116) are provided on the outer walls on both sides of the cooling sleeve (111). The rotating protrusions (116) are rotatably installed on the turning bracket (16). One of the rotating protrusions (116) is fixedly connected to the first motor (17). A water inlet (112) and a water outlet (113) are provided on the other rotating protrusion (116).

10. The vacuum mixing and processing equipment for low-temperature fluororubber masterbatch according to claim 9, characterized in that: A number of cooling cavities (114) are arranged inside the cooling sleeve (111). The water inlet (112) penetrates through the cooling sleeve (111) and communicates with one of the cooling cavities (114). The water outlet (113) also penetrates through the cooling sleeve (111) and communicates with one of the cooling cavities (114). Communication holes (115) are provided between the cooling cavities (114). No communication hole (115) is provided between the cooling cavities (114) connected to the water outlet (113) and the water inlet (112) respectively.

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