Efficient cooling device of double-screw extruder

Abstract

The utility model belongs to the technical field of double-screw extruders, particularly relates to an efficient cooling device of a double-screw extruder, and aims to solve the problems of low cooling efficiency and wet material skin in the background technology, and adopts the following scheme that the efficient cooling device comprises a water cooling pool, and a cooling mechanism is arranged on the outer wall of the bottom of the water cooling pool; the cooling mechanism comprises a cooling coil fixedly connected to the outer wall of the bottom of the water cooling pool. Under the mutual cooperation of the heat dissipation plate and the fan, one part of heat in the cooling coil can be absorbed by the heat dissipation plate, the other part of heat in the cooling coil can directly achieve air cooling through the fan, due to the fact that the heat dissipation area is large, the water temperature can be rapidly reduced, it is guaranteed that the water temperature in the water cooling pool is always in a low state, the material cooling efficiency is improved, and the service life of the water cooling pool is prolonged. Under the action of the air blower, air can be conveyed into the spray head, and water on the surface of a material can be quickly dried by spraying air from the spray head, so that the dryness of the surface of the material is ensured, and the subsequent granulation quality of the material is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-screw extruders, in particular to a high-efficiency cooling device for a twin-screw extruder. Background Art

[0002] The twin-screw extruder is developed on the basis of the single-screw extruder. Due to its good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability and other characteristics, it has been widely used in the molding processing of extruded products.

[0003] The temperature of the material extruded by the twin-screw extruder is very high and needs to be immersed in the water cooling pool for cooling in time. However, as the heat exchange between the material and the water body occurs, the temperature of the cold water in the water cooling pool rises, resulting in low cooling efficiency. In addition, the surface of the material is relatively moist after coming out of the water cooling pool, which is not conducive to subsequent granulation. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a high-efficiency cooling device for a twin-screw extruder, which overcomes the deficiencies of the prior art and effectively solves the problems of low cooling efficiency and wet material surface.

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

[0006] A high-efficiency cooling device for a twin-screw extruder, comprising a water cooling pool, wherein the outer wall at the bottom of the water cooling pool is provided with a cooling mechanism, and the cooling mechanism comprises a cooling coil fixedly connected to the outer wall at the bottom of the water cooling pool, a heat sink welded to the outer wall of the cooling coil, a heat sink welded to the outer wall at the bottom of the heat sink, a symmetrically distributed fan fixedly connected to the outer wall at the bottom of the heat sink, a water pump installed on the outer wall at one end of the cooling coil, and a solenoid valve installed on the outer wall at the other end of the cooling coil;

[0007] A dewatering mechanism is provided at one end of the outer wall of the top of the water cooling pool, and the dewatering mechanism includes a dewatering frame fixedly connected to the outer wall of the top of the water cooling pool, a nozzle fixedly connected to the inner wall of one side of the dewatering frame, an air inlet pipe connected to the outer wall of one end of the nozzle, and a blower installed on the outer wall of the air inlet pipe.

[0008] Preferably, the other end of the top outer wall of the water cooling pool is rotatably connected to a first positioning roller, and one end of the top outer wall of the water cooling pool is rotatably connected to a second positioning roller, and the bottom of the inner wall of the water cooling pool is rotatably connected to a bottom roller.

[0009] Preferably, the inner wall at the top of the water cooling pool is slidably connected with symmetrically distributed slide plates, and the outer walls of the two slide plates are rotatably connected with a first guide roller and a second guide roller respectively.

[0010] Preferably, a temperature display is fixedly connected to the outer wall of one side of the water cooling pool.

[0011] Preferably, a PLC controller is installed on one end of the outer wall of one side of the water cooling pool, and the PLC controller is connected to the fan, water pump, solenoid valve and blower through signal lines.

[0012] Preferably, a water level line is provided on the inner wall on the other side of the water cooling pool.

[0013] Preferably, a threading hole is provided on an outer wall of one side of the water removal frame.

[0014] The beneficial effects of the utility model are:

[0015] 1. The high-efficiency cooling device of the twin-screw extruder designed in this invention, when the solenoid valve is open, the water in the water cooling pool will be immersed in the cooling coil. With the cooperation of the heat sink and the fan, part of the heat in the cooling coil will be absorbed by the heat sink, and part of it will be directly cooled by the fan. Due to the large heat dissipation area, the water temperature can be quickly reduced, ensuring that the water temperature in the water cooling pool is always in a low state, thereby improving the cooling efficiency of the material;

[0016] 2. The twin-screw extruder of this design has an efficient cooling device. When the material is away from the water cooling pool, it will pass through the water removal frame. Under the action of the blower, the air will be transported to the nozzle. The jet of the nozzle can quickly dry the moisture on the surface of the material, ensuring the dryness of the material surface and improving the quality of the subsequent granulation of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a high-efficiency cooling device for a twin-screw extruder proposed by the utility model;

[0018] Figure 2 A schematic diagram of a cooling mechanism of a high-efficiency cooling device for a twin-screw extruder proposed by the utility model;

[0019] Figure 3 The utility model provides a schematic diagram of a water removal mechanism of a high-efficiency cooling device for a twin-screw extruder.

[0020] In the figure: 1. water cooling pool; 2. cooling mechanism; 21. cooling coil; 22. heat sink; 23. heat sink; 24. fan; 25. water pump; 26. solenoid valve; 3. water removal mechanism; 31. water removal frame; 32. nozzle; 33. air intake pipe; 34. blower; 4. first positioning roller; 5. second positioning roller; 6. bottom roller; 7. slide plate; 8. first guide roller; 9. second guide roller; 10. temperature display; 11. PLC controller; 12. water level line; 13. threading hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Embodiment 1, refer to Figures 1 to 2 , an efficient cooling device for a twin-screw extruder, comprising a water cooling pool 1, a cooling mechanism 2 is arranged on the outer wall of the bottom of the water cooling pool 1, and the cooling mechanism 2 comprises the following components:

[0023] The cooling mechanism 2 includes a cooling coil 21 fixedly connected to the outer wall of the bottom of the water cooling pool 1, a heat sink 22 welded to the outer wall of the cooling coil 21, a heat sink 23 welded to the outer wall of the bottom of the heat sink 22, a symmetrically distributed fan 24 fixedly connected to the outer wall of the bottom of the heat sink 22, a water pump 25 installed on the outer wall of one end of the cooling coil 21, and a solenoid valve 26 installed on the outer wall of the other end of the cooling coil 21.

[0024] In this embodiment, when the solenoid valve 26 is open, the water in the water cooling pool 1 will penetrate into the cooling coil 21. With the cooperation of the heat sink 22 and the fan 24, part of the heat in the cooling coil 21 will be absorbed by the heat sink 22, and part of it will be directly cooled by the fan 24. Due to the large heat dissipation area, the water temperature can be quickly lowered, ensuring that the water temperature in the water cooling pool 1 is always in a low state, thereby improving the cooling efficiency of the material.

[0025] Example 2, refer to Figures 1 to 3 , a high-efficiency cooling device for a twin-screw extruder, a water removal mechanism 3 is provided at one end of the top outer wall of a water cooling pool 1, and the water removal mechanism 3 includes the following components:

[0026] The water removal mechanism 3 includes a water removal frame 31 fixedly connected to the outer wall of the top of the water cooling pool 1, a nozzle 32 fixedly connected to the inner wall of one side of the water removal frame 31, an air inlet pipe 33 connected to the outer wall of one end of the nozzle 32, and a blower 34 installed on the outer wall of the air inlet pipe 33.

[0027] In this embodiment, when the material is away from the water cooling pool 1, it will pass through the water removal frame 31. Under the action of the blower 34, the air will be transported to the nozzle 32. The jet of the nozzle 32 can quickly dry the moisture on the surface of the material, thereby ensuring the dryness of the material surface and improving the quality of the subsequent granulation of the material.

[0028] Reference Figure 1 The other end of the top outer wall of the water cooling pool 1 is rotatably connected to a first positioning roller 4, and one end of the top outer wall of the water cooling pool 1 is rotatably connected to a second positioning roller 5, and the bottom of the inner wall of the water cooling pool 1 is rotatably connected to a bottom roller 6.

[0029] Reference Figure 1The top inner wall of the water cooling pool 1 is slidably connected with a symmetrically distributed slide plate 7, and the outer walls of the two slide plates 7 are rotatably connected with a first guide roller 8 and a second guide roller 9 respectively.

[0030] Reference Figure 1 A temperature display 10 is fixedly connected to the outer wall of one side of the water cooling pool 1.

[0031] Reference Figures 1 to 3 A PLC controller 11 is installed at one end of the outer wall of one side of the water cooling pool 1, and the PLC controller 11 is connected to the fan 24, the water pump 25, the solenoid valve 26 and the blower 34 through signal lines.

[0032] Reference Figure 1 A water level line 12 is arranged on the inner wall of the other side of the water cooling pool 1 .

[0033] Reference Figure 3 , except that a threading hole 13 is provided on the outer wall of one side of the water frame 31.

[0034] Working principle: the material extruded by the twin-screw extruder will be immersed in the water cooling pool 1 along the first positioning roller 4 and the bottom roller 6 for cooling, and then will be away from the water cooling pool 1 along the first guide roller 8, the second guide roller 9 and the second positioning roller 5. When the material is away from the water cooling pool 1, it will pass through the water removal frame 31. Under the action of the blower 34, the air will be transported to the nozzle 32. The jet of the nozzle 32 can quickly dry the moisture on the surface of the material;

[0035] During the process of cooling the material, the water in the water cooling pool 1 will penetrate into the cooling coil 21. With the cooperation of the heat sink 22 and the fan 24, part of the heat in the cooling coil 21 will be absorbed by the heat sink 22, and part of it will be directly cooled by the fan 24 to quickly reduce the water temperature.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An efficient cooling device for a twin-screw extruder, comprising a water cooling pool (1), characterized in that: The bottom outer wall of the water cooling pool (1) is provided with a cooling mechanism (2), and the cooling mechanism (2) comprises a cooling coil (21) fixedly connected to the bottom outer wall of the water cooling pool (1), a heat sink (22) welded to the outer wall of the cooling coil (21), a heat sink (23) welded to the bottom outer wall of the heat sink (22), a symmetrically distributed fan (24) fixedly connected to the bottom outer wall of the heat sink (22), a water pump (25) installed on the outer wall of one end of the cooling coil (21), and a solenoid valve (26) installed on the outer wall of the other end of the cooling coil (21); A dewatering mechanism (3) is provided at one end of the top outer wall of the water cooling pool (1), and the dewatering mechanism (3) comprises a dewatering frame (31) fixedly connected to the top outer wall of the water cooling pool (1), a nozzle (32) fixedly connected to the inner wall of one side of the dewatering frame (31), an air inlet pipe (33) connected to the outer wall of one end of the nozzle (32), and a blower (34) installed on the outer wall of the air inlet pipe (33).

2. The high-efficiency cooling device for a twin-screw extruder according to claim 1, characterized in that: The other end of the top outer wall of the water cooling pool (1) is rotatably connected to a first positioning roller (4), and one end of the top outer wall of the water cooling pool (1) is rotatably connected to a second positioning roller (5), and the bottom of the inner wall of the water cooling pool (1) is rotatably connected to a bottom roller (6).

3. The high-efficiency cooling device for a twin-screw extruder according to claim 1, characterized in that: The inner wall at the top of the water cooling pool (1) is slidably connected to symmetrically distributed slide plates (7), and the outer walls of the two slide plates (7) are rotatably connected to a first guide roller (8) and a second guide roller (9) respectively.

4. The high-efficiency cooling device for a twin-screw extruder according to claim 1, characterized in that: A temperature display (10) is fixedly connected to an outer wall of one side of the water cooling pool (1).

5. The high-efficiency cooling device for a twin-screw extruder according to claim 1, characterized in that: A PLC controller (11) is installed at one end of an outer wall of one side of the water cooling pool (1), and the PLC controller (11) is connected to the fan (24), the water pump (25), the solenoid valve (26) and the blower (34) via signal lines.

6. The high-efficiency cooling device for a twin-screw extruder according to claim 1, characterized in that: A water level line (12) is provided on the inner wall of the other side of the water cooling pool (1).

7. The high-efficiency cooling device for a twin-screw extruder according to claim 1, characterized in that: A threading hole (13) is provided on the outer wall of one side of the water removal frame (31).

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