CN220261606U

CN220261606U - Cooling equipment for PVC plastic raw material mixing production

Info

Publication number: CN220261606U
Application number: CN202321858226.6U
Authority: CN
Inventors: 崔学新
Original assignee: Foshan Hengshengxin Machinery Equipment Co ltd
Current assignee: Foshan Hengshengxin Machinery Equipment Co ltd
Priority date: 2023-07-14
Filing date: 2023-07-14
Publication date: 2023-12-29
Anticipated expiration: 2033-07-14

Abstract

A cooling device for PVC plastic raw material mixing production comprises a damping base, a supporting plate, an extrusion roller set and a cooling device; a support plate mounting plate; driven roller of squeeze roller group; the driven roller is provided with a cooling cavity and a driven sleeve, and the driven sleeve is communicated with the cooling cavity; the driven roller is rotatably arranged on the mounting plate; the cooling device comprises a refrigeration water tank, a jet pipe, a water inlet pipe, a water return pipe and a water outlet pipe; the water inlet pipe is communicated with the refrigeration water tank, and the water return pipe is communicated with the refrigeration water tank; the injection pipe is communicated with the water inlet pipe through a rotary joint, penetrates through the driven sleeve and extends to the cooling cavity; the injection pipe is provided with an injection hole; the right end of the water outlet pipe is sleeved in the driven sleeve, and the water outlet pipe is communicated with the water return pipe through a rotary joint. After cooling water enters the cooling cavity, the heat of the driven roller can be absorbed, so that the temperature of the outer surface of the driven roller is reduced, the extruded sizing material is cooled indirectly, the temperature rise of the sizing material in the extrusion process is avoided, and the quality of the sizing material product after mixing is ensured.

Description

Cooling equipment for PVC plastic raw material mixing production

Technical Field

The utility model relates to the technical field of machining, in particular to cooling equipment for PVC plastic raw material mixing production.

Background

PVC plastic products are generally colloidal synthetic materials formed by mixing PVC chemical raw materials and compounding agents of other chemical raw materials through a mixer, and the mixer is generally divided into an open mixer (an open mixer for short) and an internal mixer (an internal mixer for short).

At present, in the mixing process, in the process of mixing rubber by using a roller, the roller can extrude rubber, so that the temperature of the rubber can be increased. However, the existing open mill generally does not have a cooling mechanism, the roller cannot be cooled rapidly, and the heat dissipation effect of the sizing material is poor, so that the temperature of the sizing material can continuously rise in the repeated extrusion process, even the surface of the sizing material can be burnt, and the product quality is affected.

Disclosure of Invention

Aiming at the problems of the background technology, the utility model aims to provide cooling equipment for PVC plastic raw material mixing production, which solves the problems of low quality of sizing materials caused by the fact that the temperature of sizing materials is increased due to the fact that the existing mixing machine is not provided with a cooling device.

To achieve the purpose, the utility model adopts the following technical scheme:

a cooling device for PVC plastic raw material mixing production comprises a damping base, a supporting plate, an extrusion roller set and a cooling device; the supporting plate is arranged at the top of the damping base, and mounting plates which are bilaterally symmetrical are arranged at the top of the supporting plate; the mounting plates on the left side and the right side are respectively provided with fixed bearings which are spaced front and back; the extrusion roller set comprises a rotary driving subassembly, a driving roller and a driven roller; the two ends of the driving roller are respectively provided with a driving sleeve, and the driving roller is connected with the fixed bearing through the driving sleeve, so that the driving roller is rotatably arranged between the two mounting plates; a hollow cooling cavity is formed in the driven roller, driven sleeves are respectively arranged at two ends of the driven roller, and the driven sleeves are communicated with the cooling cavity; the driven roller is connected with the fixed bearing through the driven sleeve, so that the driven roller is rotatably arranged between the two mounting plates; the rotary driving subassembly is used for driving the driving roller and the driven roller to reversely rotate between the two mounting plates; the cooling device comprises a refrigeration water tank, a jet pipe, a water inlet pipe, a water return pipe and a water outlet pipe; the refrigerating water tank is arranged at the top of the supporting plate; the water inlet pipe is communicated with the water outlet of the refrigeration water tank, and the water return pipe is communicated with the water return port of the refrigeration water tank; the right end of the injection pipe is communicated with the water inlet pipe through a rotary joint, and the left end of the injection pipe penetrates through the driven sleeve at the right end of the driven roller and extends to the cooling cavity; the left end of the injection pipe is provided with a plurality of injection holes; the right end of the water outlet pipe is sleeved in the driven sleeve at the left end of the driven roller, and the left end of the water outlet pipe is communicated with the water return pipe through the rotary joint.

More preferably, a material pressing channel is arranged between the driving roller and the driven roller; the cooling device is also provided with a cooling air box which is arranged at the top of the mounting plates at the left side and the right side in a left-right manner; the bottom of the cooling bellows is provided with a plurality of air outlets, and the air outlets are opposite to the material pressing channel.

More preferably, the cooling device further comprises a heat dissipation seat, a swinging assembly, a temperature sensor and a material separation net; the heat dissipation seat is arranged right below the material pressing channel, a plurality of fans are arranged in the heat dissipation seat, and an air outlet window is arranged at the top of the heat dissipation seat; the material separating net cover is arranged on the air outlet window; the swinging component is connected with the heat dissipation seat, so that the swinging component can drive the heat dissipation seat to swing in the vertical direction; the temperature sensor is arranged at the mounting plate at the left end or the right end of the material pressing channel, and the temperature sensor is electrically connected with the swinging assembly.

Further, rotating shafts are arranged on the left side and the right side of the radiating seat, and the radiating seat is rotatably arranged between the two mounting plates through the rotating shafts; the swing assembly comprises a driving motor, a first driving gear and a first driven gear; the driving motor is arranged on one of the mounting plates, and the first driving gear is sleeved on the driving end of the driving motor; the driving motor is electrically connected with the temperature sensor; the first driven gear is sleeved on the rotating shaft, and is meshed with the first driving gear.

Preferably, the water outlet of the refrigeration water tank is provided with a water pump, and the water inlet pipe is communicated with the water outlet of the refrigeration water tank through the water pump.

Preferably, the cooling device further comprises a water seal, the water seal is clamped at the left end of the injection pipe, and the water seal is used for sealing the communication part between the right end of the cooling cavity and the driven sleeve.

Specifically, the rotary drive subassembly includes a rotary drive, a second drive gear, a second driven gear, a drive pulley, a driven pulley, and a drive belt; the second driving gear is sleeved on the driving end of the rotation driving piece; the second driven gear is sleeved outside the driving sleeve, and is meshed with the second driving gear; the driving belt pulley is sleeved on the driving sleeve, the driven belt pulley is sleeved on the driven sleeve, and the driving belt pulley and the driven belt pulley are in transmission connection through the transmission belt.

More preferably, the four top corners of the supporting plate are respectively provided with a connecting hole, the bottom of the supporting plate is provided with a first spring, and the first spring and the connecting holes are concentric; the damping base is provided with a damping cavity, and the damping cavity is provided with a threaded hole matched with the connecting hole; the bottom of the bolt sequentially passes through the connecting hole and the inside of the first spring and is in threaded connection with the threaded hole.

Further, an inverted U-shaped rod, a fixed block, a sliding block and a second spring are arranged in the damping cavity; the fixed block is fixedly arranged at the top of the inverted U-shaped rod; the sliding blocks are symmetrically arranged at the top of the inverted U-shaped rod left and right by taking the fixed block as an axis, and the sliding blocks at the left side and the right side are respectively connected with the fixed block through the second springs; the bottom of backup pad is equipped with bilateral symmetry's connecting block, the connecting block passes through the connecting rod with the homonymy the slider is connected.

Compared with the prior art, one of the technical schemes has the following beneficial effects:

after cooling water enters the cooling cavity, the heat of the driven roller can be absorbed, so that the temperature of the outer surface of the driven roller is reduced, extruded sizing materials are cooled indirectly, the temperature rise of the sizing materials in the extrusion process is avoided, and the quality of the sizing material products after mixing is ensured.

Drawings

FIG. 1 is a schematic view showing the structure of a kneading machine according to an embodiment of the present utility model;

FIG. 2 is a schematic illustration of the connection of a support plate to a squeeze roll set in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic view showing the connection of a squeeze roll set to a cooling apparatus according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of the connection between the driven roller and the jet stack in accordance with one embodiment of the present utility model;

FIG. 5 is a schematic view of the connection between cooling air and a squeeze roll set in accordance with an embodiment of the present utility model;

FIG. 6 is a schematic diagram illustrating a connection between a material pressing channel and a heat sink according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram illustrating the connection of a swing assembly to a heat sink according to an embodiment of the present utility model;

FIG. 8 is a schematic illustration of the connection of a rotary drive subassembly to a drive roller in accordance with one embodiment of the present utility model;

FIG. 9 is a schematic view of a shock absorbing chamber according to one embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include one or more such feature.

In a preferred embodiment of the present application, as shown in fig. 1 to 9, a cooling device for mixing and producing PVC plastic materials comprises a damping base 1, a supporting plate 2, a squeeze roller set 3 and a cooling device 4; the supporting plate 2 is arranged at the top of the shock absorption base 1, and the top of the supporting plate 2 is provided with a mounting plate 21 which is bilaterally symmetrical; the mounting plates 21 on the left and right sides are respectively provided with fixed bearings 211 which are spaced front and back; the squeeze roller set 3 comprises a rotary driving subassembly 33, a driving roller 31 and a driven roller 32; two ends of the driving roller 31 are respectively provided with a driving sleeve 311, and the driving roller 31 is connected with the fixed bearing 211 through the driving sleeve 311, so that the driving roller 31 is rotatably arranged between the two mounting plates 21; a hollow cooling cavity 320 is formed in the driven roller 32, driven sleeves 321 are respectively arranged at two ends of the driven roller 32, and the driven sleeves 321 are communicated with the cooling cavity 320; the driven roller 32 is connected with the fixed bearing 211 through the driven sleeve 321, so that the driven roller 32 is rotatably arranged between the two mounting plates 21; the rotary driving subassembly 33 is used for driving the driving roller 31 and the driven roller 32 to reversely rotate between the two mounting plates 21; the cooling device 4 comprises a refrigeration water tank 41, a jet pipe 42, a water inlet pipe 43, a water return pipe 44 and a water outlet pipe 45; the refrigerating water tank 41 is installed at the top of the support plate 2; the water inlet pipe 43 is communicated with the water outlet of the refrigeration water tank 41, and the water return pipe 44 is communicated with the water return port of the refrigeration water tank 41; the right end of the injection pipe 42 is communicated with the water inlet pipe 43 through a rotary joint 46, and the left end of the injection pipe 42 passes through the inside of the driven sleeve 321 at the right end of the driven roller 32 and extends to the cooling cavity 320; the left end of the injection pipe 42 is provided with a plurality of injection holes 420; the right end of the water outlet pipe 45 is sleeved in the driven sleeve 321 at the left end of the driven roller 32, and the left end of the water outlet pipe 45 is communicated with the water return pipe 44 through the rotary joint 46.

In this embodiment, the squeeze roll set 3 and the cooling device 4 are mounted on the vibration damping mount 1 through the support plates 2, respectively, so that the vibration damping mount 1 can reduce vibration of the squeeze roll set 3 when kneading. Further, the squeeze roller set 3 includes two mounting plates 21, a driving roller 31 and a driven roller 32, which are symmetrical left and right, and each mounting plate 21 is provided with a fixed bearing 211 which is spaced from the front to the back; the driving roller 31 and the driven roller 32 are respectively provided with a driving sleeve 311 and a driven sleeve 321 at the left and right ends thereof, and are connected with fixed bearings 211 of the mounting handles at the left and right sides through the driving sleeve 311 and the driven sleeve 321, so that the driving roller 31 and the driven roller 32 are rotatably mounted between the two mounting plates 21. Further, the interior of the driven roller 32 is hollow, so that the interior of the driven roller 32 forms a cooling chamber 320. The left and right ends of the cooling chamber 320 are respectively connected to the driven socket 321. The water outlet of the refrigeration water tank 41 is communicated with the water inlet pipe 43 through a water pump 47, one end of the water inlet pipe 43 away from the water outlet of the refrigeration water tank 41 is provided with an injection pipe 42, the left end of the injection pipe 42 penetrates through the driven sleeve 321 at the right end of the driven roller 32 and extends into the cooling cavity 320, so that cooling water of the refrigeration water tank 41 can sequentially pass through the water inlet pipe 43, the injection pipe 42 and the driven sleeve 321 and enter the cooling cavity 320. After cooling water enters the cooling cavity 320, the heat of the driven roller 32 can be absorbed, so that the temperature of the outer surface of the driven roller 32 is reduced, the extruded sizing material is indirectly cooled, the temperature rise of the sizing material in the extrusion process is avoided, and the quality of the sizing material product after mixing is ensured. Preferably, the right end of the injection pipe 42 communicates with the water inlet pipe 43 through a rotary joint 46 so that the injection pipe 42 can rotate following the driven roller 32 and also can deliver cooling water into the cooling chamber 320. The injection pipe 42 is disposed on the left end of the cooling cavity 320 in a penetrating manner, and is further provided with a plurality of injection holes 420, so that cooling water can uniformly enter the cooling cavity 320 through the plurality of injection holes 420, and uniform heat dissipation of the driven roller 32 is ensured. It should be noted that, the cooling water tank 41 is a functional component purchased in the market, and the right end of the cooling cavity 320 is provided with a water seal 48, and the water seal 48 is sleeved on the injection pipe 42, so as to seal the connection between the cooling cavity 320 and the driven sleeve 321 at the right end of the driven roller 32, and prevent the water in the cooling cavity 320 from flowing out of the driven roller 32 from the driven sleeve 321 at the right end of the driven roller 32. Further, the driven sleeve 321 at the left end of the driven roller 32 is sleeved with the water outlet pipe 45, the left end of the water outlet pipe 45 is communicated with the water return pipe 44 connected with the water return port of the refrigeration water tank 41 through the rotary joint 46, so that water absorbing heat in the cooling cavity 320 can flow from the driven sleeve 321 at the left end of the driven roller 32 to the water return pipe 44, and then flows back to the refrigeration water tank 41 through the water return pipe 44, the effect of water circulation is achieved, and the waste of water resources is avoided.

More preferably, a pressing channel 300 is arranged between the driving roller 31 and the driven roller 32; the cooling device 4 is also provided with a cooling air box 49, and the cooling air box 49 is arranged at the top of the mounting plate 21 at the left side and the right side in a left-right manner; the bottom of the cooling bellows 49 is provided with a plurality of air outlets, and a plurality of air outlets are opposite to the material pressing channel 300.

When the sizing material passes through the material pressing channel 300, the sizing material can be extruded and kneaded by the driven roller 32 and the driving roller 31, then the sizing material can be wound on the driven roller 32 connected with the refrigerating water tank 41, a large amount of heat can be generated after the sizing material is extruded, and part of the heat of the sizing material can be transferred to the driven roller 32 wound by the sizing material. Therefore, the cooling water tank 41 delivers cooling water into the cooling chamber 320, so that the outer surface of the driven roller 32 is cooled, thereby cooling the rubber compound. Further, a cooling air box 49 is further arranged right above the material pressing channel 300, and a plurality of air outlets at the bottom of the cooling air box 49 are opposite to the material pressing channel 300, so that cooling air of the cooling air box 49 can blow towards the material pressing channel 300, the temperature of the rubber material extruded and kneaded in the material pressing channel 300 is reduced, the temperature of the rubber material is prevented from rising, and the quality of the rubber material product after mixing is ensured.

More preferably, the cooling device 4 further comprises a heat dissipation seat 401, a swinging assembly 402, a temperature sensor 403 and a material separation net 404; the heat dissipation seat 401 is arranged right below the material pressing channel 300, a plurality of fans 4011 are arranged in the heat dissipation seat 401, and an air outlet window is arranged at the top of the heat dissipation seat 401; the material separation net 404 is covered on the air outlet window; the swinging component 402 is connected with the heat dissipation seat 401, so that the swinging component 402 can drive the heat dissipation seat 401 to swing in the vertical direction; the temperature sensor 403 is disposed on the mounting plate 21 at the left end or the right end of the pressing channel 300, and the temperature sensor 403 is electrically connected to the swing assembly 402.

Further, rotation shafts are provided on the left and right sides of the heat dissipation seat 401, and the heat dissipation seat 401 is rotatably mounted between the two mounting plates 21 through the rotation shafts; the swing assembly 402 includes a drive motor 4021, a first drive gear 4022 and a first driven gear 4023; the driving motor 4021 is mounted on one of the mounting plates 21, and the first driving gear 4022 is sleeved on the driving end of the driving motor 4021; the driving motor 4021 is electrically connected with the temperature sensor 403; the first driven gear 4023 is sleeved on the rotating shaft, and the first driven gear 4023 is meshed with the first driving gear 4022.

A heat dissipation seat 401 is arranged right below the material pressing channel 300, a plurality of fans 4011 are arranged in the heat dissipation seat 401, and an air outlet window which is right opposite to the material pressing channel 300 is arranged at the top of the heat dissipation seat 401, so that the heat dissipation seat 401 can blow air to the material pressing channel 300 through the plurality of fans 4011, the temperature of the rubber material extruded and kneaded in the material pressing channel 300 is reduced, the temperature of the rubber material is prevented from rising, and the quality of the rubber material product after the rubber material is mixed is ensured. In order to prevent the glue from falling into the inner cavity of the heat dissipation seat 401 through the air outlet window, the air outlet window is further covered with a material separation net 404, so that when the glue falls from the material pressing channel 300, the glue can be prevented from falling into the heat dissipation seat 401, and normal blowing of the fan 4011 is ensured.

More preferably, a temperature sensor 403 is provided on the right mounting plate 21, said temperature sensor 403 being used for detecting the temperature of the glue in the glue channel 300. When the temperature sensor 403 detects that the temperature of the glue in the pressing channel 300 is too low, the temperature sensor 403 will feedback the detected data to the driving motor 4021, the driving motor 4021 will drive the first driving gear 4022 to rotate, so that the first driving gear 4022 drives the first driven gear 4023 to rotate, and the heat sink 401 swings back and forth, so that the fan 4011 can blow air to the pressing channel 300 at an angle, and the air area of the glue is enlarged, so as to prolong the cooling time of the glue. When the temperature sensor 403 detects that the temperature of the glue in the pressing channel 300 is too high or low, the temperature sensor 403 transmits the detected data to the driving motor 4021, the driving motor 4021 drives the first driving gear 4022 to rotate, so that the first driving gear 4022 drives the first driven gear 4023 to rotate, and the air outlet window swings to the square of the pressing channel 300, so that the air outlet of the heat sink 401 can be intensively blown to the pressing channel 300, and the glue in the pressing channel 300 can be rapidly dissipated in a targeted manner.

Preferably, the water outlet of the refrigeration water tank 41 is provided with a water pump 47, and the water inlet pipe 43 is communicated with the water outlet of the refrigeration water tank 41 through the water pump 47.

Preferably, the cooling device 4 further includes a water seal 48, where the water seal 48 is clamped at the left end of the injection pipe 42, and the water seal 48 is used to seal a communication position between the right end of the cooling cavity 320 and the driven sleeve 321.

Specifically, the rotary drive subassembly 33 includes a rotary drive 331, a second drive gear 332, a second driven gear 333, a drive pulley 334, a driven pulley 335, and a drive belt 336; the rotation driving part 331 is mounted on one of the mounting plates 21, and the second driving gear 332 is sleeved on the driving end of the rotation driving part 331; the second driven gear 333 is sleeved outside the driving sleeve 311, and the second driven gear 333 is meshed with the second driving gear 332; the driving pulley 334 is sleeved on the driving sleeve 311, the driven pulley 335 is sleeved on the driven sleeve 321, and the driving pulley 334 and the driven pulley 335 are in transmission connection through the transmission belt 336.

The rotation driving member 331 is a driving motor 4021 in this embodiment. The rotation driving member 331 rotates through the driven second driving gear 332, so that the second driving gear 332 drives the second driven gear 333 sleeved on the driving sleeve 311 to rotate, and the second driven gear 333 drives the driving roller 31 to rotate. Further, a driving pulley 334 is sleeved on the driving sleeve 311, and the driving pulley 334 is in driving connection with a driven pulley 335 sleeved on the driven sleeve 321 through the driving belt 336. Therefore, the rotation of the driving roller 31 drives the driving pulley 334 to rotate, and the rotation of the driving pulley 334 drives the driven pulley 335 to rotate through the driving belt 336, so that the driven roller 32 rotates.

More preferably, the four top corners of the supporting plate 2 are respectively provided with a connecting hole, the bottom of the supporting plate 2 is provided with a first spring 22, and the first spring 22 and the connecting holes are concentric; the damping base 1 is provided with a damping cavity 100, and the damping cavity 100 is provided with a threaded hole matched with the connecting hole; the bottom of the bolt sequentially passes through the connecting hole and the inside of the first spring 22, and is in threaded connection with the threaded hole. Four apex angles of backup pad 2 pass through in proper order through the bolt connecting hole and screw hole, make backup pad 2 set up in the top of shock attenuation chamber 100. Further, a first spring 22 is provided at the bottom of the support plate 2, and when the support plate 2 is disposed at the top of the shock absorbing cavity 100, the top of the first spring 22 is fixedly connected with the support plate 2, and the bottom of the first spring 22 contacts with the cavity surface of the shock absorbing cavity 100. The purpose of this arrangement is that the mixing piece is vibrated when extruding and kneading, and the first spring 22 can reduce the driving force of the supporting plate 2 to the damping seat, thereby reducing the vibration of the whole mixing machine and ensuring that the mixing piece can be mixed stably.

Further, an inverted U-shaped rod 101, a fixed block 102, a sliding block 103 and a second spring 104 are arranged in the shock absorption cavity 100; the fixed block 102 is fixedly arranged at the top of the inverted U-shaped rod 101; the sliding blocks 103 are symmetrically arranged on the top of the inverted U-shaped rod 101 left and right by taking the fixed block 102 as an axis, and the sliding blocks 103 on the left side and the right side are respectively connected with the fixed block 102 through the second springs 104; the bottom of the supporting plate 2 is provided with a connecting block 23 which is bilaterally symmetrical, and the connecting block 23 is connected with the slide block 103 on the same side through a connecting rod 105.

In order to better reduce vibration of the rubber during mixing, an inverted U-shaped rod 101 is arranged in the damping cavity 100, a fixed block 102 is arranged in the center of the top horizontal portion of the inverted U-shaped rod 101, sliding blocks 103 are respectively arranged at the left end and the right end of the top horizontal portion, and the sliding blocks 103 are symmetrically arranged with the fixed block 102. The sliding block 103 is elastically connected with the fixed block 102 through a second spring 104, and the top of the sliding block 103 is also connected with the connecting block 23 at the bottom of the supporting plate 2 through a connecting rod 105. Therefore, the support plate 2 can transmit vibration to the slider 103 through the connection block 23 when the rubber is mixed, and the slider 103 is damped by the second spring 104, thereby reducing vibration of the rubber when the rubber is mixed.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims

1. The cooling equipment for PVC plastic raw material mixing production is characterized by comprising a damping base, a supporting plate, an extrusion roller set and a cooling device;

the supporting plate is arranged at the top of the damping base, and mounting plates which are bilaterally symmetrical are arranged at the top of the supporting plate; the mounting plates on the left side and the right side are respectively provided with fixed bearings which are spaced front and back;

the extrusion roller set comprises a rotary driving subassembly, a driving roller and a driven roller;

the two ends of the driving roller are respectively provided with a driving sleeve, and the driving roller is connected with the fixed bearing through the driving sleeve, so that the driving roller is rotatably arranged between the two mounting plates;

a hollow cooling cavity is formed in the driven roller, driven sleeves are respectively arranged at two ends of the driven roller, and the driven sleeves are communicated with the cooling cavity; the driven roller is connected with the fixed bearing through the driven sleeve, so that the driven roller is rotatably arranged between the two mounting plates;

the rotary driving subassembly is used for driving the driving roller and the driven roller to reversely rotate between the two mounting plates;

the cooling device comprises a refrigeration water tank, a jet pipe, a water inlet pipe, a water return pipe and a water outlet pipe;

the refrigerating water tank is arranged at the top of the supporting plate; the water inlet pipe is communicated with the water outlet of the refrigeration water tank, and the water return pipe is communicated with the water return port of the refrigeration water tank;

the right end of the injection pipe is communicated with the water inlet pipe through a rotary joint, and the left end of the injection pipe penetrates through the driven sleeve at the right end of the driven roller and extends to the cooling cavity; the left end of the injection pipe is provided with a plurality of injection holes;

the right end of the water outlet pipe is sleeved in the driven sleeve at the left end of the driven roller, and the left end of the water outlet pipe is communicated with the water return pipe through the rotary joint.

2. The cooling device for PVC plastic raw material mixing production according to claim 1, wherein a material pressing channel is arranged between the driving roller and the driven roller;

the cooling device is also provided with a cooling air box which is arranged at the top of the mounting plates at the left side and the right side in a left-right manner; the bottom of the cooling bellows is provided with a plurality of air outlets, and the air outlets are opposite to the material pressing channel.

3. The cooling device for PVC plastic raw material mixing production according to claim 2, wherein the cooling device further comprises a heat dissipation seat, a swinging assembly, a temperature sensor and a material separation net;

the heat dissipation seat is arranged right below the material pressing channel, a plurality of fans are arranged in the heat dissipation seat, and an air outlet window is arranged at the top of the heat dissipation seat;

the material separating net cover is arranged on the air outlet window;

the swinging component is connected with the heat dissipation seat, so that the swinging component can drive the heat dissipation seat to swing in the vertical direction;

the temperature sensor is arranged at the mounting plate at the left end or the right end of the material pressing channel, and the temperature sensor is electrically connected with the swinging assembly.

4. A cooling device for mixing production of PVC plastic raw materials according to claim 3, wherein the left and right sides of the heat sink are provided with rotation shafts, and the heat sink is rotatably mounted between the two mounting plates through the rotation shafts;

the swing assembly comprises a driving motor, a first driving gear and a first driven gear;

the driving motor is arranged on one of the mounting plates, and the first driving gear is sleeved on the driving end of the driving motor; the driving motor is electrically connected with the temperature sensor;

the first driven gear is sleeved on the rotating shaft, and is meshed with the first driving gear.

5. The cooling device for PVC plastic raw material mixing production according to claim 1, wherein a water pump is arranged at a water outlet of the refrigeration water tank, and the water inlet pipe is communicated with the water outlet of the refrigeration water tank through the water pump.

6. The cooling device for PVC plastic raw material mixing production according to claim 1, wherein the cooling device further comprises a water seal, the water seal is clamped at the left end of the injection pipe, and the water seal is used for sealing the communication part between the right end of the cooling cavity and the driven sleeve.

7. The cooling device for mixing production of PVC plastic raw materials according to claim 1, wherein the rotary driving subassembly comprises a rotary driving piece, a second driving gear, a second driven gear, a driving belt pulley, a driven belt pulley and a transmission belt;

the second driving gear is sleeved on the driving end of the rotation driving piece; the second driven gear is sleeved outside the driving sleeve, and is meshed with the second driving gear;

the driving belt pulley is sleeved on the driving sleeve, the driven belt pulley is sleeved on the driven sleeve, and the driving belt pulley and the driven belt pulley are in transmission connection through the transmission belt.

8. The cooling device for PVC plastic raw material mixing production according to claim 1, wherein four vertex angles of the supporting plate are respectively provided with a connecting hole, the bottom of the supporting plate is provided with a first spring, and the first spring and the connecting holes are concentric;

the damping base is provided with a damping cavity, and the damping cavity is provided with a threaded hole matched with the connecting hole; the bottom of the bolt sequentially passes through the connecting hole and the inside of the first spring and is in threaded connection with the threaded hole.

9. The cooling device for PVC plastic raw material mixing production according to claim 8, wherein the damping cavity is internally provided with an inverted U-shaped rod, a fixed block, a sliding block and a second spring;

the fixed block is fixedly arranged at the top of the inverted U-shaped rod;

the sliding blocks are symmetrically arranged at the top of the inverted U-shaped rod left and right by taking the fixed block as an axis, and the sliding blocks at the left side and the right side are respectively connected with the fixed block through the second springs;

the bottom of backup pad is equipped with bilateral symmetry's connecting block, the connecting block passes through the connecting rod with the homonymy the slider is connected.