Cooling device for plastic extruders

Abstract

The utility model discloses a kind of cooling device for plastic extruder, belong to cooling device technical field.This kind of cooling device for plastic extruder, including main body and cooling mechanism, the main body includes box, the inside of the box is sequentially provided with precooling groove, water cooling groove and air drying groove along material conveying direction, the upper end side of precooling groove and air drying groove is equipped with first guide roller, the upper end both sides of water cooling groove is equipped with second guide roller, the inside bottom end of water cooling groove is equipped with several third guide rollers, the inside bottom end of water cooling groove is inserted with evaporator;The cooling mechanism includes base, the top of the base is connected with the bottom end of box, the bottom end of evaporator extends to inside by passing through base, one side of the base is fixedly installed with cooling box, one side of the cooling box is inserted with condenser, the utility model can effectively improve the practicality of cooling device for plastic extruder, with higher practical value.

Description

Technical Field

[0001] This utility model relates to the field of cooling device technology, specifically a cooling device for a plastic extruder. Background Technology

[0002] A plastic extruder is an important piece of plastic processing equipment that melts and continuously extrudes plastic raw materials through heating and pressurization. During the plastic extrusion molding process, the plastic products that are just extruded from the extruder die are at a high temperature and need to be cooled and shaped; otherwise, the dimensional accuracy and performance of the products will be affected.

[0003] Based on the above, the inventors have discovered the following problems: Currently, most commonly used plastic extruder cooling devices are cooled by air cooling. Air cooling usually involves blowing cold air onto the plastic product by a fan, but its cooling efficiency is low and the cooling is uneven, which can easily lead to defects such as product warping.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a cooling device for a plastic extruder in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of this utility model is to provide a cooling device for a plastic extruder, so as to solve the problem that most of the commonly used plastic extruder cooling devices mentioned in the background art rely on air cooling for cooling. Air cooling usually involves blowing cold air to the plastic product through a fan, but its cooling efficiency is low and the cooling is uneven.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] A cooling device for a plastic extruder includes a main body and a cooling mechanism. The main body includes a housing, inside which a pre-cooling tank, a water-cooling tank, and an air-drying tank are arranged sequentially along the material conveying direction. A first guide roller is installed on one side of the upper end of both the pre-cooling tank and the air-drying tank. Second guide rollers are installed on both sides of the upper end of the water-cooling tank. Several third guide rollers are installed at the bottom of the water-cooling tank. An evaporator is inserted into the bottom of the water-cooling tank. The cooling mechanism includes a base, the top of which is connected to the bottom of the housing. The bottom of the evaporator extends through the base into the interior. A cooling box is fixedly installed on one side of the base, and a condenser is inserted into one side of the cooling box.

[0008] Furthermore, a pair of electric telescopic rods are fixedly installed on both sides of the precooling tank and the drying tank, and a mounting bracket is fixedly installed between the output ends of each pair of electric telescopic rods.

[0009] The beneficial effect of adopting the above-mentioned further solution is that the electric telescopic rods on both sides of the precooling tank and the drying tank can drive the mounting frame to move up and down, flexibly adjust the distance with the materials, and avoid the brushless fan being too close to the product.

[0010] Furthermore, several brushless fans are fixedly installed at the bottom of each mounting bracket, and the brushless fans are distributed at equal intervals.

[0011] The beneficial effects of adopting the above-mentioned further solution are that the brushless fans at the bottom of the mounting frame are evenly distributed, which can quickly remove the heat from the surface of the extrudate during pre-cooling, preparing for subsequent water cooling; during air drying, they can efficiently blow away residual moisture on the surface, avoiding water stains from affecting the product appearance; the brushless fans operate stably and the airflow is uniform, improving cooling and drying efficiency.

[0012] Furthermore, a compressor is fixedly installed on one side of the bottom of the cooling box, and a dryer filter is fixedly installed on the other side of the bottom of the cooling box.

[0013] The beneficial effects of adopting the above-mentioned further solutions are that the compressor in the cooling box provides power for the refrigeration cycle, compressing the refrigerant to a high temperature and high pressure state; the dryer filter removes moisture and impurities from the refrigerant, prevents pipe blockage or component corrosion, ensures stable operation of the refrigeration system, and extends the service life of the equipment.

[0014] Furthermore, the input end of the compressor is connected to the output end of the evaporator via a pipe, and the output end of the compressor is connected to the input end of the condenser via a pipe.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the compressor, evaporator and condenser are connected by pipes to form a refrigerant circulation path. The high-temperature and high-pressure refrigerant output by the compressor is liquefied by the condenser and then processed by subsequent components before entering the evaporator to absorb heat and vaporize, continuously cooling the water-cooled tank and ensuring stable cooling effect.

[0016] Furthermore, the input end of the dryer filter is connected to the output end of the condenser via a pipe, and an expansion valve is fitted onto the output end of the dryer filter. One end of the expansion valve is connected to the input end of the evaporator via a pipe.

[0017] The beneficial effects of adopting the above-mentioned further solution are that the dryer filter, expansion valve, condenser, and evaporator are connected in sequence. The dryer filter purifies the refrigerant, and the expansion valve throttles and reduces the pressure of the high-pressure liquid refrigerant into a low-pressure mist, which facilitates the evaporator to fully absorb heat, improves the refrigeration efficiency, and ensures the temperature stability of the water-cooled bath.

[0018] Furthermore, both the housing and the base are made of stainless steel, and drain pipes are installed on the bottom sides of both the water-cooling tank and the air-drying tank.

[0019] The advantages of adopting the above-mentioned further solutions are that the stainless steel box and base are corrosion-resistant, have high strength, and are suitable for humid cooling environments; the drain pipes on the bottom of the water-cooling tank and the air-drying tank facilitate the replacement of the medium inside the water-cooling tank and the removal of residual moisture inside the air-drying tank.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: The cooling device for the plastic extruder has a pre-cooling tank, a water-cooling tank, and an air-drying tank arranged sequentially in the main body of the box, forming a stepped cooling path. The first guide roller, the second guide roller, and the third guide roller guide the material to be transported smoothly. The pre-cooling tank provides initial cooling, the water-cooling tank enhances cooling through evaporator cooling, and the air-drying tank removes surface moisture. The cooling box of the cooling mechanism works with the condenser and evaporator to form a refrigeration cycle, providing a continuous cold source for the water-cooling tank. The whole system achieves efficient and segmented cooling of the plastic extrusion, avoiding deformation caused by uneven cooling and improving product quality. The compressor, evaporator, and condenser are connected by pipes to form a refrigerant circulation path. The high-temperature and high-pressure refrigerant output by the compressor is liquefied by the condenser and then processed by subsequent components before entering the evaporator to absorb heat and vaporize, continuously cooling the water-cooling tank and ensuring stable cooling effect. The stainless steel box and base are corrosion-resistant, high-strength, and adaptable to humid cooling environments. The drain pipes on the bottom of the water-cooling tank and the air-drying tank facilitate the replacement of the medium inside the water-cooling tank and the removal of residual moisture inside the air-drying tank. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the cooling device for a plastic extruder disclosed in an embodiment of the present invention. Figure 1 ;

[0022] Figure 2 This is a three-dimensional structural diagram of the cooling device for a plastic extruder disclosed in an embodiment of the present invention. Figure 2 ;

[0023] Figure 3 This is a three-dimensional structural diagram of the cooling device for a plastic extruder disclosed in an embodiment of the present invention. Figure 3 ;

[0024] Figure 4 This is a schematic diagram of the internal three-dimensional structure of the cooling box and base of the cooling device for a plastic extruder disclosed in an embodiment of the present invention. Figure 1 ;

[0025] Figure 5 This is a schematic diagram of the internal three-dimensional structure of the cooling box and base of the cooling device for a plastic extruder disclosed in an embodiment of the present invention. Figure 2 .

[0026] In the diagram: 1. Main body; 101. Box body; 102. Precooling tank; 103. Water cooling tank; 104. Air drying tank; 105. Electric telescopic rod; 106. Mounting frame; 107. Brushless fan; 108. First guide roller; 109. Second guide roller; 110. Third guide roller; 111. Evaporator; 2. Cooling mechanism; 201. Base; 202. Cooling box; 203. Condenser; 204. Compressor; 205. Expansion valve; 206. Dryer filter. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a cooling device for a plastic extruder, comprising a main body 1 and a cooling mechanism 2. The main body 1 includes a housing 101. Inside the housing 101, along the material conveying direction, a pre-cooling tank 102, a water-cooling tank 103, and an air-drying tank 104 are arranged sequentially. A first guide roller 108 is installed on one side of the upper end of the pre-cooling tank 102 and the air-drying tank 104. A second guide roller 109 is installed on both sides of the upper end of the water-cooling tank 103. Several third guide rollers 110 are installed at the bottom of the interior of the water-cooling tank 103. An evaporator 111 is inserted into the bottom of the interior of the water-cooling tank 103. The cooling mechanism 2 includes a base 201. The top end of the base 201 is connected to the bottom end of the housing 101. The bottom end of the evaporator 111 extends through the base 201 into the interior. A cooling box 202 is fixedly installed on one side of the base 201. A condenser 203 is inserted into one side of the cooling box 202.

[0029] As an embodiment of this utility model, a pair of electric telescopic rods 105 are fixedly installed on both sides of the precooling tank 102 and the drying tank 104. A mounting bracket 106 is fixedly installed between the output ends of each pair of electric telescopic rods 105. The electric telescopic rods 105 on both sides of the precooling tank 102 and the drying tank 104 can drive the mounting bracket 106 to move up and down, flexibly adjust the distance with the material, and avoid the brushless fan 107 being too close to affect the product.

[0030] As an embodiment of this utility model, furthermore, a plurality of brushless fans 107 are fixedly installed at the bottom of the mounting bracket 106. The plurality of brushless fans 107 are evenly distributed at the bottom of the mounting bracket 106. During pre-cooling, they can quickly remove the surface heat of the extrudate, preparing for subsequent water cooling; during air drying, they can efficiently blow away residual moisture on the surface, avoiding water stains from affecting the product appearance. The brushless fans 107 operate stably and have uniform airflow, improving cooling and drying efficiency.

[0031] As one embodiment of this utility model, a compressor 204 is fixedly installed on one side of the bottom of the cooling box 202, and a dryer filter 206 is fixedly installed on the other side of the bottom of the cooling box 202. The compressor 204 in the cooling box 202 provides power for the refrigeration cycle and compresses the refrigerant to a high temperature and high pressure state; the dryer filter 206 removes moisture and impurities from the refrigerant, prevents pipe blockage or component corrosion, ensures stable operation of the refrigeration system, and extends the service life of the equipment.

[0032] As an embodiment of this utility model, the input end of the compressor 204 is connected to the output end of the evaporator 111 through a pipe, and the output end of the compressor 204 is connected to the input end of the condenser 203 through a pipe. The compressor 204, the evaporator 111 and the condenser 203 are connected through pipes to form a refrigerant circulation path. The high-temperature and high-pressure refrigerant output by the compressor 204 is liquefied by heat dissipation in the condenser 203, and after being processed by subsequent components, it enters the evaporator 111 to absorb heat and vaporize, continuously cooling the water-cooled tank 103 and ensuring a stable cooling effect.

[0033] As an embodiment of this utility model, the input end of the dryer filter 206 is connected to the output end of the condenser 203 through a pipe, and an expansion valve 205 is sleeved on the output end of the dryer filter 206. One end of the expansion valve 205 is connected to the input end of the evaporator 111 through a pipe. The dryer filter 206, the expansion valve 205, the condenser 203, and the evaporator 111 are connected in sequence. The dryer filter 206 purifies the refrigerant, and the expansion valve 205 throttles and reduces the pressure of the high-pressure liquid refrigerant to a low-pressure mist, which facilitates the evaporator 111 to fully absorb heat, improves the refrigeration efficiency, and ensures the temperature stability of the water-cooled bath 103.

[0034] As an embodiment of this utility model, the housing 101 and the base 201 are both made of stainless steel. Drain pipes are installed on the bottom sides of the water cooling tank 103 and the air drying tank 104. The stainless steel housing 101 and the base 201 are corrosion resistant, have high strength, and are suitable for humid cooling environments. The drain pipes on the bottom sides of the water cooling tank 103 and the air drying tank 104 facilitate the replacement of the internal medium of the water cooling tank 103 and the removal of residual moisture inside the air drying tank 104.

[0035] Specifically, the working principle of this cooling device for a plastic extruder is as follows: During use, the plastic extrudate enters the pre-cooling tank 102 via the first guide roller 108. The electric telescopic rods 105 on both sides of the pre-cooling tank 102 drive the mounting frame 106 and the brushless fan 107 to move to a suitable height, where the brushless fans 107, which are evenly distributed, blow air to initially cool the material. Subsequently, the material enters the water cooling tank 103 via the second guide roller 109 and is immersed in water under the guidance of several third guide rollers 110. The compressor 204 of the cooling mechanism 2 compresses the refrigerant output from the evaporator 111 into a high-temperature and high-pressure state, which is then condensed. After the material in the heat exchanger 203 is liquefied, it is purified by the dryer filter 206, and then throttled and depressurized by the expansion valve 205 into a low-pressure mist before entering the evaporator 111. The evaporator 111 absorbs the heat from the water in the water-cooling tank 103 to achieve cooling and continuously lower the water temperature. The cooled material enters the drying tank 104 through another second guide roller 109. The surface moisture is blown off by the brushless fan 107 in the drying tank 104, and finally output through the first guide roller 108. The stainless steel housing 101 and the base 201 ensure stable operation of the device in a humid environment. The whole device works together to complete the step-like cooling of the plastic extrusion.

[0036] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

Claims

1. A cooling device for a plastic extruder, characterized in that, The system includes a main body (1) and a cooling mechanism (2). The main body (1) includes a box (101). Inside the box (101), along the material conveying direction, there are sequentially arranged a pre-cooling tank (102), a water-cooling tank (103), and an air-drying tank (104). A first guide roller (108) is installed on one side of the upper end of the pre-cooling tank (102) and the air-drying tank (104). A second guide roller (109) is installed on both sides of the upper end of the water-cooling tank (103). The bottom of the water-cooling tank (103) is... A number of third guide rollers (110) are installed, and an evaporator (111) is inserted into the bottom of the water cooling tank (103); the cooling mechanism (2) includes a base (201), the top of the base (201) is connected to the bottom of the box (101), the bottom of the evaporator (111) extends through the base (201) into the interior, a cooling box (202) is fixedly installed on one side of the base (201), and a condenser (203) is inserted into one side of the cooling box (202).

2. The cooling device for a plastic extruder according to claim 1, characterized in that, A pair of electric telescopic rods (105) are fixedly installed on both sides of the precooling tank (102) and the air drying tank (104), and a mounting bracket (106) is fixedly installed between the output ends of each pair of electric telescopic rods (105).

3. A cooling device for a plastic extruder according to claim 2, characterized in that, Each mounting bracket (106) has several brushless fans (107) fixedly mounted at its bottom end, and the brushless fans (107) are distributed at equal intervals.

4. A cooling device for a plastic extruder according to claim 1, characterized in that, A compressor (204) is fixedly installed on one side of the bottom of the cooling box (202), and a dryer filter (206) is fixedly installed on the other side of the bottom of the cooling box (202).

5. A cooling device for a plastic extruder according to claim 4, characterized in that, The input end of the compressor (204) is connected to the output end of the evaporator (111) through a pipe, and the output end of the compressor (204) is connected to the input end of the condenser (203) through a pipe.

6. A cooling device for a plastic extruder according to claim 5, characterized in that, The input end of the dryer filter (206) is connected to the output end of the condenser (203) through a pipe. An expansion valve (205) is fitted onto the output end of the dryer filter (206). One end of the expansion valve (205) is connected to the input end of the evaporator (111) through a pipe.

7. A cooling device for a plastic extruder according to claim 1, characterized in that, The box body (101) and the base (201) are both made of stainless steel, and the bottom sides of the water cooling tank (103) and the air drying tank (104) are equipped with drain pipes.

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