Reclaimed rubber screw extruder with multi-stage discharge cooling device

Abstract

The utility model discloses a reclaimed rubber screw extruder with a multi-stage discharge cooling device, which comprises a bottom plate, a screw extruder main body, a first cooling mechanism, a second cooling mechanism and a third cooling mechanism, and the screw extruder main body, the first cooling mechanism, the second cooling mechanism and the third cooling mechanism are sequentially arranged on the upper side of the bottom plate from left to right. The second cooling mechanism comprises a cooling water tank, fixing frames, fixing plates, supporting plates and threaded rollers, the number of the fixing frames, the number of the fixing plates and the number of the supporting plates are all two, the cooling water tank is arranged on the upper side of the bottom plate, the two fixing frames are arranged on the two sides of the cooling water tank respectively, and the two fixing plates are arranged on the upper sides of the two fixing frames respectively. Through the arrangement of the first cooling mechanism, the second cooling mechanism and the third cooling mechanism, reclaimed rubber can be gradually and repeatedly cooled, so that the reclaimed rubber can be fully cooled, and the situation that the reclaimed rubber is insufficiently cooled and the quality of the reclaimed rubber is influenced is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of screw extruders, in particular to a reclaimed rubber screw extruder with a multi-stage discharge cooling device. Background Art

[0002] Recycled rubber is made of discarded rubber products or vulcanized scraps of rubber products as raw materials and processed into rubber with a certain plasticity that can be reused. Desulfurization is one of the key processes in the processing of recycled rubber. It is a process of regenerating the rubber by desulfurizing the waste rubber with a large network structure of the elastomer into a small network structure and a small amount of linear structure plastic body that can be reused. In the prior art, the desulfurization equipment is mainly based on a set of normal pressure continuous desulfurization equipment. By placing the material in a sealed screw device pipeline flow field, the rotation of the screw drives the waste material to roll and squeeze forward in the pipeline. From preheating, heating to desulfurization reaction, a thermal cracking rolling field is formed to desulfurize the waste material. Since the desulfurization device needs to be equipped with a heating device, the temperature of the recycled rubber particles at the time of discharge is relatively high, which is easy to cause the problem of discharge adhesion. Therefore, a cooling device will be provided at the time of discharge.

[0003] The cooling device of the existing screw extruder usually uses a single cooler for cooling, and the cooling equipment used is mostly cooling by water circulation, but this cooling effect is limited, resulting in insufficient cooling of the reclaimed rubber, which affects the quality of the reclaimed rubber. Therefore, it is urgent to design a reclaimed rubber screw extruder with a multi-stage discharge cooling device to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a reclaimed rubber screw extruder with a multi-stage discharge cooling device to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A reclaimed rubber screw extruder with a multi-stage discharge cooling device comprises a bottom plate, a screw extruder body, a first cooling mechanism, a second cooling mechanism and a third cooling mechanism, wherein the screw extruder body, the first cooling mechanism, the second cooling mechanism and the third cooling mechanism are sequentially arranged on the upper side of the bottom plate from left to right, the second cooling mechanism comprises a cooling water trough, a fixed frame, a fixed plate, a support plate and a threaded roller, the number of the fixed frame, the fixed plate and the support plate are all two, the cooling water trough is arranged on the upper side of the bottom plate, the two fixed frames are respectively arranged on both sides of the cooling water trough, the two fixed plates are respectively arranged on the upper sides of the two fixed frames, the upper sides of the two fixed frames are both provided with notches, the two fixed plates are respectively located on the upper sides of the two notches, the support plate is fixedly installed on the lower side of the fixed plate, the support plate is located in the notch and the cooling water trough, and the threaded roller is rotatably installed between the two support plates.

[0007] A first motor is fixedly mounted on the upper side of the two fixing frames, and pulleys are arranged at one end of the two first motors and at both ends of the threaded roller, and a synchronous belt is sleeved between the two corresponding pulleys.

[0008] The first cooling mechanism includes a support frame, a cooling roller, a coolant tank, a water pump, a delivery pipe and a return pipe. The support frame is arranged on the upper side of the bottom plate. There are two cooling rollers, and the two cooling rollers are rotatably installed between the support frames. The coolant tank and the water pump are arranged on the upper side of the support frame. The input end of the water pump is fixedly connected to the output end of the coolant tank through a pipeline. One end of the delivery pipe is fixedly installed on the output end of the water pump, and the other end of the delivery pipe is movably connected to one end of the two cooling rollers respectively. One end of the return pipe is movably connected to the other end of the two cooling rollers respectively, and the other end of the return pipe is fixedly connected to the input end of the coolant tank. A plurality of limit grooves are opened on the circumference of the cooling roller, and the upper and lower limit grooves correspond to each other.

[0009] The third cooling mechanism includes a shell, ventilation slots, a mounting frame, a second motor, fan blades and a conveyor belt structure, the shell is arranged on the upper side of the base plate, the ventilation slots are opened on the upper side of the shell, the mounting frame is fixedly installed in the ventilation slots, the second motor is fixedly installed on the upper side of the mounting frame, the fan blades are fixedly installed at the output end of the second motor, the fan blades are located on the lower side of the mounting frame, and the conveyor belt structure is arranged at the bottom of the inner wall of the shell.

[0010] The screw extruder main body includes a base, a drive motor, a barrel, a heater, a feed hopper and a screw. The base is arranged on the upper side of the bottom plate, the drive motor and the barrel are both arranged on the upper side of the base, there are three heaters, and the three heaters are all arranged on the periphery of the barrel. The feed hopper is arranged on the upper side of the barrel, the feed hopper is connected to the barrel, the screw is rotatably installed in the barrel, and one end of the screw is fixedly connected to the output end of the drive motor.

[0011] A connecting flange is arranged at one end of the barrel, and an extrusion die is mounted on one side of the connecting flange through bolts.

[0012] In the above technical scheme, the utility model provides a reclaimed rubber screw extruder with a multi-stage discharge cooling device, which has the following beneficial effects:

[0013] (1) By setting up the first cooling mechanism, the second cooling mechanism and the third cooling mechanism, the regenerated rubber can be cooled step by step for multiple times, so that the regenerated rubber can be fully cooled, thereby avoiding the situation where the regenerated rubber is not sufficiently cooled, which affects the quality of the regenerated rubber.

[0014] (2) By setting up a threaded roller, the extruded strip-shaped reclaimed rubber is wound around the threaded roller so that the strip-shaped reclaimed rubber needs to be threadedly transported around the threaded roller. This process can prolong the contact time between the reclaimed rubber and the cooling water in the cooling water tank, thereby improving the cooling effect on the reclaimed rubber, shortening the cooling operation time, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 The utility model provides a schematic diagram of the overall installation structure of a reclaimed rubber screw extruder with a multi-stage discharge cooling device.

[0017] Figure 2 The utility model provides a schematic cross-sectional structure diagram of a screw extruder main body according to an embodiment of a reclaimed rubber screw extruder with a multi-stage discharge cooling device.

[0018] Figure 3 A detailed structural schematic diagram of the first cooling mechanism provided for an embodiment of a reclaimed rubber screw extruder with a multi-stage discharge cooling device according to the utility model.

[0019] Figure 4The utility model provides a schematic cross-sectional structure diagram of a second cooling mechanism of a reclaimed rubber screw extruder with a multi-stage discharge cooling device.

[0020] Figure 5 The utility model is a schematic diagram of the cross-sectional structure of the third cooling mechanism provided in an embodiment of a reclaimed rubber screw extruder with a multi-stage discharge cooling device.

[0021] 1. Bottom plate; 2. Screw extruder body; 3. First cooling mechanism; 4. Second cooling mechanism; 5. Third cooling mechanism; 6. Driving motor; 7. Barrel; 8. Heater; 9. Feed hopper; 10. Extrusion die; 11. Connecting flange; 12. Base; 13. Screw; 14. Support frame; 15. Cooling roller; 16. Limiting groove; 17. Coolant tank; 18. Water pump; 19. Conveying pipe; 20. Reflux pipe; 21. Fixed frame; 22. Cooling water trough; 23. Fixed plate; 25. Notch; 26. First motor; 27. Synchronous belt; 28. Support plate; 29. ​​Pulley; 30. Threaded roller; 31. Shell; 32. Ventilation groove; 33. Mounting frame; 34. Second motor; 35. Fan blade; 36. Conveyor belt structure. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1-5As shown, a reclaimed rubber screw extruder with a multi-stage discharge cooling device provided by an embodiment of the utility model comprises a bottom plate 1, a screw extruder body 2, a first cooling mechanism 3, a second cooling mechanism 4 and a third cooling mechanism 5. The screw extruder body 2, the first cooling mechanism 3, the second cooling mechanism 4 and the third cooling mechanism 5 are arranged on the upper side of the bottom plate 1 from left to right in sequence. The second cooling mechanism 4 comprises a cooling water trough 22, a fixing frame 21, a fixing plate 23, a support plate 28 and a threaded roller 30. The number of the fixing frame 21, the fixing plate 23 and the support plate 28 are all two. The cooling water trough 22 is arranged on the upper side of the bottom plate 1. The two fixing frames 21 are respectively arranged on both sides of the cooling water trough 22. The two fixing plates 23 are respectively arranged on the upper sides of the two fixing frames 21. The upper sides of the two fixing frames 21 are both provided with notches 25. The two fixing plates 23 are respectively located on the upper sides of the two notches 25. The support plate 28 is fixedly installed on the lower side of the fixing plate 23. The support plate 2 8 is located in the notch 25 and the cooling water tank 22, the threaded roller 30 is rotatably installed between the two support plates 28, the first motors 26 are fixedly installed on the upper sides of the two fixed frames 21, and pulleys 29 are provided at one end of the two first motors 26 and at both ends of the threaded roller 30, and a synchronous belt 27 is sleeved between the two corresponding pulleys 29 above and below. The screw extruder body 2 includes a base 12, a drive motor 6, a barrel 7, a heater 8, a feed hopper 9 and a screw 13. The base 12 is arranged on the upper side of the bottom plate 1, the drive motor 6 and the barrel 7 are both arranged on the upper side of the base 12, the number of heaters 8 is three, and the three heaters 8 are all arranged on the peripheral side of the barrel 7, the feed hopper 9 is arranged on the upper side of the barrel 7, and the feed hopper 9 is connected to the barrel 7. The screw 13 is rotatably installed in the barrel 7, and one end of the screw 13 is fixedly connected to the output end of the drive motor 6. A connecting flange 11 is provided at one end of the barrel 7, and an extrusion mold 10 is installed on one side of the connecting flange 11 by bolts.

[0024] Specifically, in this embodiment, when the screw extruder body 2 is used, the reclaimed rubber particles to be desulfurized are poured into the barrel 7 through the feed hopper 9, and then the drive motor 6 is started to drive the screw 13 to rotate, and the heater 8 is started to heat the barrel 7. Then, the screw 13 is rotated to drive the waste rubber to move to the heating section, and a strong radial shearing effect is generated by the rotation of the screw 13. At this time, the rubber temperature continues to rise, and at the same time, the extrusion sections with different functions on the screw 13 fully desulfurize the rubber. Then, the desulfurized reclaimed rubber is extruded through the extrusion die 10 to form a continuous rubber. The strip of regenerated rubber is then passed through the first cooling mechanism 3 for preliminary cooling, and then the strip of regenerated rubber is passed into the cooling water tank 22, and the strip of regenerated rubber is wound around the side of the threaded roller 30, and then the first motor 26 is started to drive the threaded roller 30 to rotate through the synchronous belt 27 and the pulley 29. The rotation of the threaded roller 30 causes the strip of regenerated rubber to be threadedly transported around the threaded roller 30. By threading the strip of regenerated rubber around the threaded roller 30, the contact time between the regenerated rubber and the cooling water in the cooling water tank 22 can be extended, thereby improving the cooling effect on the regenerated rubber.

[0025] The utility model provides a reclaimed rubber screw extruder with a multi-stage discharging cooling device, wherein a first cooling mechanism 3 comprises a support frame 14, a cooling roller 15, a coolant tank 17, a water pump 18, a delivery pipe 19 and a return pipe 20, wherein the support frame 14 is arranged on the upper side of a bottom plate 1, and the number of cooling rollers 15 is two, and both cooling rollers 15 are rotatably mounted between the support frames 14, the coolant tank 17 and the water pump 18 are both arranged on the upper side of the support frame 14, the input end of the water pump 18 is fixedly connected to the output end of the coolant tank 17 through a pipeline, one end of the delivery pipe 19 is fixedly mounted on the output end of the water pump 18, and the other end of the delivery pipe 19 is movably connected to one end of the two cooling rollers 15, one end of the return pipe 20 is movably connected to the other end of the two cooling rollers 15, and the other end of the return pipe 20 is fixedly connected to the input end of the coolant tank 17, and a plurality of limit grooves 16 are provided on the periphery of the cooling roller 15, and the upper and lower limit grooves 16 correspond to each other.

[0026] In another embodiment provided by the utility model, when the regenerated rubber is initially cooled, the strip-shaped regenerated rubber is passed through two corresponding upper and lower limit grooves 16, so that the limit grooves 16 limit and guide the strip-shaped regenerated rubber, and then the water pump 18 is started to transport the coolant in the coolant tank 17 to the cooling roller 15 through the delivery pipe 19. The cooling roller 15 contacts the strip-shaped regenerated rubber, and the coolant can absorb the heat of the strip-shaped regenerated rubber, thereby cooling the regenerated rubber. After the heat exchange, the coolant will flow back to the coolant tank 17 through the reflux pipe 20, wherein a condensation plate is arranged inside the coolant tank 17, which can keep the coolant at a certain temperature. At the same time, the thrust generated when the regenerated rubber is extruded by the screw extruder body and the traction force generated when the threaded roller 30 rotates to transport the regenerated rubber can drive the cooling roller 15 to rotate when the regenerated rubber moves, thereby improving the cooling effect on the regenerated rubber.

[0027] The utility model provides a reclaimed rubber screw extruder with a multi-stage discharge cooling device, wherein the third cooling mechanism 5 includes a shell 31, a ventilation slot 32, a mounting frame 33, a second motor 34, a fan blade 35 and a conveyor belt structure 36, the shell 31 is arranged on the upper side of the bottom plate 1, the ventilation slot 32 is opened on the upper side of the shell 31, the mounting frame 33 is fixedly installed in the ventilation slot 32, the second motor 34 is fixedly installed on the upper side of the mounting frame 33, the fan blade 35 is fixedly installed at the output end of the second motor 34, the fan blade 35 is located on the lower side of the mounting frame 33, and the conveyor belt structure 36 is arranged at the bottom of the inner wall of the shell 31.

[0028] In another embodiment provided by the utility model, when the regenerated rubber is finally cooled, the regenerated rubber is placed on the conveyor belt structure 36 by passing the regenerated rubber through the shell 31. At the same time, the fan blades 35 are driven to rotate by starting the second motor 34. The rotation of the fan blades 35 can air-cool the regenerated rubber and, at the same time, air-dry the regenerated rubber.

[0029] Working principle: The reclaimed rubber particles to be desulfurized are placed into the screw extruder body 2, and the screw extruder body 2 performs mechanical shearing and high-temperature oxidation on the reclaimed rubber particles to complete the desulfurization process of the reclaimed rubber, and the reclaimed rubber is extruded through the extrusion die 10 to form continuous strip-shaped reclaimed rubber, and then the reclaimed rubber is passed through the first cooling mechanism 3, the second cooling mechanism 4 and the third cooling mechanism 5 respectively, so that the reclaimed rubber can be gradually cooled multiple times, thereby improving the cooling effect of the reclaimed rubber and avoiding the situation where the reclaimed rubber is not cooled sufficiently, which affects the quality of the reclaimed rubber.

[0030] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A reclaimed rubber screw extruder with a multi-stage discharge cooling device, comprising a bottom plate (1), a screw extruder body (2), a first cooling mechanism (3), a second cooling mechanism (4) and a third cooling mechanism (5), characterized in that: The screw extruder body (2), the first cooling mechanism (3), the second cooling mechanism (4) and the third cooling mechanism (5) are arranged in sequence from left to right on the upper side of the bottom plate (1); the second cooling mechanism (4) comprises a cooling water trough (22), a fixing frame (21), a fixing plate (23), a support plate (28) and a threaded roller (30); the number of the fixing frame (21), the fixing plate (23) and the support plate (28) are two; the cooling water trough (22) is arranged on the upper side of the bottom plate (1); the two fixing frames (21) and the fixing plate (23) are arranged on the upper side of the bottom plate (1); (21) are respectively arranged on both sides of the cooling water trough (22), the two fixing plates (23) are respectively arranged on the upper sides of the two fixing frames (21), the upper sides of the two fixing frames (21) are both provided with slots (25), the two fixing plates (23) are respectively located on the upper sides of the two slots (25), the support plate (28) is fixedly installed on the lower side of the fixing plate (23), the support plate (28) is located in the slot (25) and the cooling water trough (22), and the threaded roller (30) is rotatably installed between the two support plates (28); The first cooling mechanism (3) comprises a support frame (14), a cooling roller (15), a coolant tank (17), a water pump (18), a delivery pipe (19) and a return pipe (20), wherein the support frame (14) is arranged on the upper side of the base plate (1), the number of the cooling rollers (15) is two, and the two cooling rollers (15) are rotatably mounted between the support frame (14), the coolant tank (17) and the water pump (18) are arranged on the upper side of the support frame (14), and the input end of the water pump (18) is connected to the coolant tank (17). 7) The output end is fixedly connected through a pipeline, one end of the delivery pipe (19) is fixedly installed on the output end of the water pump (18), the other end of the delivery pipe (19) is movably connected to one end of the two cooling rollers (15), one end of the return pipe (20) is movably connected to the other end of the two cooling rollers (15), the other end of the return pipe (20) is fixedly connected to the input end of the coolant tank (17), and a plurality of limit grooves (16) are opened on the circumference of the cooling roller (15), and the upper and lower limit grooves (16) correspond to each other.

2. The reclaimed rubber screw extruder with a multi-stage discharge cooling device according to claim 1, characterized in that: A first motor (26) is fixedly mounted on the upper side of the two fixing frames (21), pulleys (29) are provided at one end of the two first motors (26) and at both ends of the threaded roller (30), and a synchronous belt (27) is sleeved between the two corresponding pulleys (29) at the upper and lower ends.

3. The reclaimed rubber screw extruder with a multi-stage discharge cooling device according to claim 1, characterized in that: The third cooling mechanism (5) comprises a shell (31), a ventilation slot (32), a mounting frame (33), a second motor (34), a fan blade (35) and a conveyor belt structure (36); the shell (31) is arranged on the upper side of the bottom plate (1); the ventilation slot (32) is opened on the upper side of the shell (31); the mounting frame (33) is fixedly mounted in the ventilation slot (32); the second motor (34) is fixedly mounted on the upper side of the mounting frame (33); the fan blade (35) is fixedly mounted on the output end of the second motor (34); the fan blade (35) is located on the lower side of the mounting frame (33); and the conveyor belt structure (36) is arranged at the bottom of the inner wall of the shell (31).

4. The reclaimed rubber screw extruder with a multi-stage discharge cooling device according to claim 1, characterized in that: The screw extruder body (2) comprises a base (12), a drive motor (6), a barrel (7), a heater (8), a feed hopper (9) and a screw (13); the base (12) is arranged on the upper side of the bottom plate (1); the drive motor (6) and the barrel (7) are both arranged on the upper side of the base (12); there are three heaters (8), and the three heaters (8) are all arranged on the periphery of the barrel (7); the feed hopper (9) is arranged on the upper side of the barrel (7); the feed hopper (9) is connected to the barrel (7); the screw (13) is rotatably installed in the barrel (7); one end of the screw (13) is fixedly connected to the output end of the drive motor (6).

5. The reclaimed rubber screw extruder with a multi-stage discharge cooling device according to claim 4, characterized in that: A connecting flange (11) is provided at one end of the barrel (7), and an extrusion die (10) is mounted on one side of the connecting flange (11) via bolts.

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