Liquid heat dissipation device for water cooling box of extruder

Abstract

The utility model relates to the technical field of plastic extruders, in particular to a liquid radiating device for a water cooling box of an extruder, which comprises the water cooling box, a plurality of support rollers are mounted in the water cooling box, a liquid collecting pipe is mounted at the bottom of the water cooling box in a communicated manner, and water leakage holes are uniformly distributed at the bottom of the liquid collecting pipe. A flow collecting pool capable of receiving liquid dripping from the water leakage holes is arranged below the liquid collecting pipe and sequentially communicated with a cooling-water machine and a water pump, and the liquid discharging end of the water pump is communicated with a water inlet of the water cooling box. According to the device, liquid is cooled for the first time in a rain curtain mode, and then enters the cooling-water machine to be cooled for the second time, so that the burden of cooling high-temperature liquid by the cooling-water machine can be reduced, and the energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic extruders, in particular to a liquid heat dissipation device for a water cooling box of an extruder. Background Art

[0002] At present, in the production process of granules (such as plastic granules), most of them need to go through extrusion molding, strip drawing, cooling and pelletizing, and finally packaging to obtain the finished granules. Among them, extrusion molding is to use the pressure and shear force generated by the rotation of the screw of the extruder to fully plasticize and evenly mix the powder, and extrude it into strips through the die.

[0003] In the cooling process of the extruded plastic strip, the prior art uses a long water cooling box filled with cooling water for cooling. The length of the cooling water cooling box is generally about 3-5 meters. In order to avoid the excessive temperature of the liquid in the water cooling box affecting the cooling of the plastic strip, the liquid in the water cooling box is generally circulated by a water pump. During the circulation process, the liquid in the water cooling box is cooled by a chiller. For reference, the relevant technical disclosure (announcement) number: CN208084932U extruder strip water cooling device;

[0004] In the prior art, the high-temperature liquid in the water cooling box directly enters the chiller for cooling, which increases the operating burden of the chiller. Utility Model Content

[0005] The utility model aims to solve the problem that the high-temperature liquid in the water cooling box directly enters the chiller for cooling in the prior art, which increases the operating burden of the chiller, and proposes a liquid heat dissipation device for the water cooling box of an extruder.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A liquid heat dissipation device for an extruder water-cooling box comprises a water-cooling box, a plurality of supporting rollers are installed in the water-cooling box, a collecting pipe is connected and installed at the bottom of the water-cooling box, evenly distributed water leakage holes are opened at the bottom of the collecting pipe, a collecting pool capable of receiving liquid dripping from the water leakage holes is arranged below the collecting pipe, the collecting pool is connected to a chiller and a water pump in sequence, and the discharge end of the water pump is connected to the water inlet of the water-cooling box.

[0008] A blowing device is provided between the liquid collecting pipe and the flow collecting tank, and the blowing device can blow air toward the dripping liquid.

[0009] The blowing device comprises a conical cover and a fan, wherein the fan air outlet is connected to a side of the conical cover with a small opening, and a side of the conical cover with a large opening points to the dripping liquid.

[0010] It includes several connecting pipes. The bottom of the water cooling box is provided with liquid outlets corresponding to the number of connecting pipes at intervals. The top of the liquid collecting pipe is provided with liquid inlets corresponding to the number of connecting pipes at intervals. The connecting pipes are fixed between the water cooling box and the liquid collecting pipe, and one end of each connecting pipe communicates with the liquid outlet and the other end communicates with the liquid inlet.

[0011] The collecting pool has a conical cavity. The collecting pool is provided with a water pumping port at the bottom of the cavity. The water pumping port is communicated with the liquid inlet end of the chiller through a pipeline, and the liquid outlet end of the chiller is communicated with the water pump.

[0012] The water inlet is located on the side of the water cooling box away from the extruder die head.

[0013] A liquid cooling device for an extruder water cooling box proposed by the present utility model has the beneficial effect that: in this device, the liquid is cooled once through the rain curtain method, and then enters the chiller for secondary cooling after the first cooling, which can reduce the burden on the chiller for cooling high-temperature liquid and reduce energy consumption. Description of the Drawings

[0014] Figure 1 It is the main view sectional structure schematic diagram of the present utility model;

[0015] Figure 2 It is the left view partial sectional structure schematic diagram of the present utility model.

[0016] In the figure: water cooling box 1, liquid outlet 2, connecting pipe 3, liquid inlet 4, liquid collecting pipe 5, water leakage hole 6, blowing device 7, collecting pool 8, water pumping port 9, chiller 10, water pump 11, water inlet 12, conical cover 71, fan 72. Detailed Embodiment

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0018] Referring to Figure 1-2 , a liquid cooling device for an extruder water cooling box includes a water cooling box 1. A number of support rollers are installed in the water cooling box 1. The bottom of the water cooling box 1 is connected and installed with a liquid collecting pipe 5. The bottom of the liquid collecting pipe 5 is provided with uniformly distributed water leakage holes 6. A collecting pool 8 capable of receiving the liquid dripping from the water leakage holes 6 is provided below the liquid collecting pipe 5. The collecting pool 8 is successively communicated with a chiller 10 and a water pump 11. The liquid discharge end of the water pump 11 is communicated with the water inlet 12 of the water cooling box 1.

[0019] The liquid in the water cooling box 1 of the device drips downward through the leakage hole 6 at the bottom of the collecting pipe 5 to form a "rain curtain". The rain curtain can perform preliminary heat dissipation when dripping in the air. The liquid after the preliminary heat dissipation enters the collecting pool 8, and then under the action of the water pump, the liquid that has undergone preliminary heat dissipation enters the chiller 10, and is finally discharged into the water cooling box 1 to complete the liquid cooling. The device cools the liquid once by means of a rain curtain, and then enters the chiller for secondary cooling after the first cooling. This can reduce the burden of the chiller on cooling high-temperature liquid and reduce energy consumption.

[0020] In order to further improve the cooling efficiency of the primary cooling, a blowing device 7 is provided between the liquid collecting pipe 5 and the collecting pool 8. The blowing device 7 can blow air toward the dripping liquid, thereby increasing the speed of heat dissipation of the rain curtain.

[0021] As an embodiment, the blowing device 7 includes a conical cover 71 and a fan 72. The air outlet of the fan 72 is connected to the side with a small opening of the conical cover 71, and the side with a large opening of the conical cover 71 is directed to the dripping liquid. Air is blown toward the conical cover 71 by the fan 72, and the airflow is blown toward the rain curtain through the conical cover 71. Of course, some guide flow channels can be set in the conical cover in combination with the existing airflow cooling structure to improve the heat dissipation effect. Of course, in order to reduce costs, air can be blown directly toward the rain curtain by the fan.

[0022] In order to facilitate the transformation of the existing water cooling box, the device includes a plurality of connecting pipes 3. The bottom of the water cooling box 1 is provided with liquid outlets 2 corresponding to the number of connecting pipes 3, and the top of the collecting pipe 5 is provided with liquid inlets 4 corresponding to the number of connecting pipes 3. The connecting pipe 3 is fixed between the water cooling box 1 and the collecting pipe 5, and one end of the connecting pipe 3 is connected to the liquid outlet 2 and the other end is connected to the liquid inlet 4. The liquid outlet 2 can be opened in the existing water cooling box, and then the collecting pipe 5 is connected through the connecting pipe 3, and the transformation cost is low.

[0023] The collecting pool 8 has a conical groove cavity, and a water pumping port 9 is opened at the bottom of the collecting pool 8. The water pumping port 9 is connected to the liquid inlet end of the chiller 10 through a pipeline, and the liquid outlet end of the chiller 10 is connected to the water pump 11. The dripping rain curtain is collected through the conical groove cavity of the collecting pool 8 and then connected to the chiller 10 and the water pump 11.

[0024] The water inlet 12 is located on the side of the water cooling box 1 away from the extruder die head, so that cold water enters from the end of the water cooling box 1, which can better cool the extruded plastic strips.

[0025] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technical solution, concept, and design obtained by equivalent replacement or change based on the technical solution and utility model concept of the utility model by any technician familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model.

Claims

1. A liquid heat dissipation device for an extruder water cooling box, comprising a water cooling box (1), wherein a plurality of support rollers are installed in the water cooling box (1), characterized in that: The bottom of the water cooling box (1) is connected to a collecting pipe (5), the bottom of the collecting pipe (5) is provided with evenly distributed water leakage holes (6), a collecting pool (8) capable of receiving liquid dripping from the water leakage holes (6) is provided below the collecting pipe (5), the collecting pool (8) is connected to a water chiller (10) and a water pump (11) in sequence, and the discharge end of the water pump (11) is connected to a water inlet (12) of the water cooling box (1).

2. The liquid heat dissipation device of the extruder water cooling box according to claim 1, characterized in that: A blowing device (7) is provided between the liquid collecting pipe (5) and the flow collecting tank (8), and the blowing device (7) is capable of blowing air toward the dripping liquid.

3. The liquid heat dissipation device of the extruder water cooling box according to claim 2, characterized in that: The blowing device (7) comprises a conical cover (71) and a fan (72), wherein an air outlet of the fan (72) is connected to a side with a smaller opening of the conical cover (71), and a side with a larger opening of the conical cover (71) is directed toward the dripping liquid.

4. The liquid heat dissipation device of the extruder water cooling box according to any one of claims 1 to 3, characterized in that: The invention comprises a plurality of connecting pipes (3), wherein the bottom of the water cooling box (1) is provided with liquid outlets (2) corresponding to the number of the connecting pipes (3), and the top of the liquid collecting pipe (5) is provided with liquid inlets (4) corresponding to the number of the connecting pipes (3). The connecting pipe (3) is fixed between the water cooling box (1) and the liquid collecting pipe (5), and one end of the connecting pipe (3) is connected to the liquid outlet (2) and the other end is connected to the liquid inlet (4).

5. The liquid heat dissipation device of the extruder water cooling box according to claim 4, characterized in that: The collecting tank (8) has a conical groove cavity, and a water pumping port (9) is provided at the bottom of the groove cavity of the collecting tank (8). The water pumping port (9) is connected to the liquid inlet end of the chiller (10) through a pipeline, and the liquid outlet end of the chiller (10) is connected to a water pump (11).

6. The liquid heat dissipation device of the extruder water cooling box according to claim 4, characterized in that: The water inlet (12) is located on a side of the water cooling box (1) away from the extruder die head.

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