Extrusion channel cooling mechanism of double-screw extruder

Abstract

The utility model discloses an extrusion channel cooling mechanism of a double-screw extruder, which belongs to the field of double-screw extruders and comprises a double-screw extruder body and an extrusion channel bottom plate fixedly mounted on the double-screw extruder body and filled with cooling water. The industrial water chilling unit is arranged on one side of the double-screw extruder body and used for conducting temperature control adjustment on the extrusion channel bottom plate, cooling pipelines are fixedly installed on the liquid outlet connector and the liquid return connector which are adjacently arranged, and the cooling pipelines penetrate through the bottom of the extrusion channel bottom plate and extend into the extrusion channel bottom plate. And the cooling pipeline is arranged in the extrusion channel bottom plate in an S shape. According to the cooling mechanism, cooling water absorbing heat in the extrusion channel bottom plate is subjected to constant cooling regulation and control through the evenly-arranged cooling pipelines, it is ensured that cooling of all positions of the cooling water is consistent, compared with fan cooling, heat dissipation is more uniform and reliable, the situation that the discharging quality is reduced due to excessive temperature difference is avoided, and the cooling mechanism is more stable and reliable.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of double-screw extruders, and particularly relates to an extrusion channel cooling mechanism of a double-screw extruder. BACKGROUND

[0002] The double-screw extruder is a device commonly used in plastic processing and extrusion processes, which is used for melting and extruding plastic under high temperature and high pressure, including the steps of feeding, heating, mixing, extruding and cooling, so as to achieve higher production efficiency, product quality and equipment performance.

[0003] The utility model with the publication number CN220742068U discloses a conical double-screw extruder, which is cooled by setting a fan on the extrusion channel composed of a protective cover, so as to achieve the effect of stabilizing the internal processing environment of the device. However, the main cooling means is still the fan, and the fan is arranged at intervals on the cooling channel, and the cooling points are concentrated near the air outlet of the fan, which may cause the problem of uneven heat dissipation in the cooling channel, and there is a certain deficiency.

[0004] Therefore, the application provides an extrusion channel cooling mechanism of a double-screw extruder to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The application provides an extrusion channel cooling mechanism of a double-screw extruder, which aims to solve the problems in the background art that the main cooling means of the existing double-screw extruder is still the fan, the fan is arranged at intervals on the cooling channel, the cooling points are concentrated near the air outlet of the fan, which may cause the problem of uneven heat dissipation in the cooling channel, and there is a certain deficiency.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: an extrusion channel cooling mechanism of a double-screw extruder, comprising a double-screw extruder body, an extrusion channel bottom plate internally containing cooling water and fixedly installed on the double-screw extruder body, and an industrial water chiller for temperature control and adjustment of the extrusion channel bottom plate arranged on one side of the double-screw extruder body:

[0007] The output end of the industrial water chiller is fixedly installed with a liquid outlet pipe, the input end of the industrial water chiller is fixedly installed with a liquid return pipe, the liquid outlet pipe is fixedly installed with a liquid outlet distribution pipe at the end away from the industrial water chiller, the liquid return pipe is fixedly installed with a liquid return distribution pipe at the end away from the industrial water chiller, the liquid outlet distribution pipe is fixedly installed with a plurality of liquid outlet joints arranged in a linear array, the liquid return distribution pipe is fixedly installed with a plurality of liquid return joints arranged in a linear array and symmetrically arranged with the liquid outlet joints, and the liquid outlet joints and the liquid return joints arranged adjacent to each other are fixedly installed with cooling pipes, the cooling pipes penetrate through the bottom of the extrusion channel bottom plate and extend in the extrusion channel bottom plate, and the cooling pipes are arranged in an S shape in the extrusion channel bottom plate. In use, cooling water is injected into the extrusion channel bottom plate to cool the extrusion channel of the double-screw extruder body, at the same time, the industrial water chiller inputs the cooling water into the liquid outlet distribution pipe through the liquid outlet pipe, inputs the cooling water into the cooling pipes through the liquid outlet joints, and then outputs the cooling water back to the industrial water chiller through the liquid return joints and the liquid return distribution pipe. The uniformly arranged cooling pipes constantly regulate and control the cooling water in the extrusion channel bottom plate to ensure uniform cooling of the cooling water everywhere. Compared with fan cooling, the heat dissipation is more uniform and reliable, avoiding excessive temperature difference leading to decreased material quality, and being more stable and reliable.

[0008] Preferably, in order to monitor the temperature, the bottom of the extrusion channel bottom plate is fixedly installed with a temperature sensor module with a detection end extending into the extrusion channel bottom plate. Stabilize the processing environment in the equipment.

[0009] Preferably, in order to replace the water flow, the bottom of the extrusion channel bottom plate is fixedly installed with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are fixedly installed with valves, and the bottom of the extrusion channel bottom plate is fixedly installed with a water level sensor module with a detection end extending into the extrusion channel bottom plate. The water level sensor module monitors the water level in real time and replenishes or replaces it in time, which is convenient and fast.

[0010] Preferably, in order to support the cooling pipes, a base is fixedly installed at the bottom of the cooling pipes in the extrusion channel bottom plate, the base is provided with a clamping groove matched with the cooling pipes, and the cooling pipes are clamped in the clamping groove. Ensure the stability of the cooling pipes and avoid deformation.

[0011] Preferably, in order to facilitate cleaning, an ultrasonic generator is fixedly installed on the double-screw extruder body, and a plurality of ultrasonic transducers evenly arranged and electrically connected with the ultrasonic generator are fixedly installed on the bottom of the double-screw extruder body. Remove dirt in the cooling pipes and the extrusion channel bottom plate to ensure the cooling effect.

[0012] The cooling mechanism injects cooling water into the extrusion channel bottom plate to cool the extrusion channel of the double screw extruder body. Meanwhile, the industrial water chiller unit inputs cooling water into the liquid outlet distribution pipe through the liquid outlet pipe, and then through the cooling pipe to the cooling pipe. Subsequently, the cooling water is output through the liquid return joint and the liquid return distribution pipe and flows back to the industrial water chiller unit. The uniformly distributed cooling pipe uniformly controls the constant cooling of the cooling water in the extrusion channel bottom plate, ensuring uniform cooling of the cooling water everywhere. Compared with the fan cooling, the heat dissipation is more uniform and reliable, avoiding excessive temperature difference leading to decreased discharge quality, and being more stable and reliable.

[0013] The cooling mechanism starts the ultrasonic generator and vibrates the cooling water in the extrusion channel bottom plate through the ultrasonic vibrator to remove dirt in the cooling pipe and the extrusion channel bottom plate, and then discharges through the water outlet pipe to ensure the cooling effect. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an appearance structure diagram of the extrusion channel cooling mechanism of the double screw extruder.

[0015] Figure 2 It is a side structure diagram of the extrusion channel cooling mechanism of the double screw extruder.

[0016] Figure 3 It is a side structure diagram of the extrusion channel cooling mechanism of the double screw extruder.

[0017] Figure 4 It is a top structure diagram of the extrusion channel bottom plate of the extrusion channel cooling mechanism of the double screw extruder.

[0018] Figure 5 It is a bottom structure diagram of the extrusion channel bottom plate of the extrusion channel cooling mechanism of the double screw extruder.

[0019] In the figure:

[0020] 1, double screw extruder body; 11, extrusion channel bottom plate; 2, industrial water chiller unit; 21, liquid outlet pipe; 22, liquid return pipe; 23, liquid outlet distribution pipe; 24, liquid return distribution pipe; 25, liquid outlet joint; 26, liquid return joint; 27, cooling pipe; 28, temperature sensor module; 29, water inlet pipe; 210, water outlet pipe; 211, valve; 212, water level sensor module; 213, base; 214, clamping groove; 3, ultrasonic generator; 31, ultrasonic vibrator. DETAILED DESCRIPTION

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Example 1

[0023] This embodiment provides a cooling mechanism for the extrusion channel of a twin-screw extruder, such as... Figures 1-5 As shown, the cooling mechanism includes a twin-screw extruder body 1, an extrusion channel bottom plate 11 containing cooling water and fixedly installed on the twin-screw extruder body 1, and an industrial chiller unit 2 located on one side of the twin-screw extruder body 1 for temperature control and regulation of the extrusion channel bottom plate 11.

[0024] An outlet pipe 21 is fixedly installed on the output end of the industrial chiller unit 2, and a return pipe 22 is fixedly installed on the input end of the industrial chiller unit 2. An outlet distribution pipe 23 is fixedly installed on the end of the outlet pipe 21 away from the industrial chiller unit 2, and a return distribution pipe 24 is fixedly installed on the end of the return pipe 22 away from the industrial chiller unit 2. Several outlet connectors 25 arranged in a linear array are fixedly installed on the outlet distribution pipe 23, and several return connectors 26 arranged in a linear array and symmetrically arranged with respect to the outlet connectors 25 are fixedly installed on the return distribution pipe 24. Cooling pipes 27 are fixedly installed on each group of adjacent outlet connectors 25 and return connectors 26. The cooling pipes 27 penetrate the bottom of the extrusion channel bottom plate 11 and extend into the extrusion channel bottom plate 11. The cooling pipes 27 are arranged in an S-shape within the extrusion channel bottom plate 11.

[0025] During use, cooling water is injected into the bottom plate 11 of the extrusion channel to cool the extrusion channel of the twin-screw extruder body 1. At the same time, the industrial chiller unit 2 inputs chilled water into the liquid distribution pipe 23 through the liquid outlet pipe 21, and into the cooling pipe 27 through the liquid outlet connector 25. Then, the water flows back into the industrial chiller unit 2 through the other end of the cooling pipe 27, the liquid return connector 26, and the liquid return distribution pipe 24. The evenly distributed cooling pipes 27 provide constant cooling control for the cooling water that absorbs heat in the bottom plate 11 of the extrusion channel, ensuring that the cooling water cools at the same temperature throughout. Compared with fan cooling, the heat dissipation is more uniform and reliable, avoiding excessive temperature difference that could lead to a decrease in output quality, and is more stable and reliable.

[0026] Specifically, the temperature sensor module 28 is fixedly installed at the bottom of the extrusion channel bottom plate 11, and the detection end of the temperature sensor module 28 extends into the extrusion channel bottom plate 11. In use, the water temperature in the extrusion channel bottom plate 11 is monitored in real time by the temperature sensor module 28, so as to adjust the cooling power in real time by the industrial water chiller 2, and ensure that the water temperature in the extrusion channel bottom plate 11 is kept constant, and the processing environment in the equipment is stable.

[0027] More specifically, the water inlet pipe 29 and the water outlet pipe 210 are fixedly installed at the bottom of the extrusion channel bottom plate 11, and the valve 211 is fixedly installed on the water inlet pipe 29 and the water outlet pipe 210. The water level sensor module 212 is fixedly installed at the bottom of the extrusion channel bottom plate 11, and the detection end of the water level sensor module 212 extends into the extrusion channel bottom plate 11. In use, when it is necessary to replace the cooling water in the extrusion channel bottom plate 11, the valve 211 is opened, the water in the extrusion channel bottom plate 11 is discharged through the water outlet pipe 210, and then water is injected through the water inlet pipe 29. The water level sensor module 212 monitors the water level in real time, and timely supplements or replaces the water, which is convenient and fast.

[0028] Further, the base 213 is fixedly installed in the extrusion channel bottom plate 11 at the bottom of the cooling pipeline 27, the clamping groove 214 is formed in the base 213 and matched with the cooling pipeline 27, and the cooling pipeline 27 is clamped in the clamping groove 214. In use, the cooling pipeline 27 is installed and clamped on the clamping groove 214 of the base 213 to support the cooling pipeline 27, so as to ensure the stability of the cooling pipeline 27 and avoid deformation.

[0029] Embodiment 2

[0030] Different from embodiment 1, long-term cold and hot changes can cause the cooling water in the extrusion channel bottom plate 11 to scale in the cooling pipeline 27 and the extrusion channel bottom plate 11, which affects the heat dissipation effect. Therefore, the ultrasonic generator 3 is fixedly installed on the double-screw extruder body 1, and the ultrasonic vibrator 31 is fixedly installed at the bottom of the double-screw extruder body 1 and electrically connected with the ultrasonic generator 3. In use, the ultrasonic generator 3 is started, the cooling water in the extrusion channel bottom plate 11 is vibrated by the ultrasonic vibrator 31, the dirt in the cooling pipeline 27 and the extrusion channel bottom plate 11 is removed, and then discharged through the water outlet pipe 210, so as to ensure the cooling effect.

[0031] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical solution and concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An extrusion channel cooling mechanism of a double screw extruder, comprising a double screw extruder body (1), an extrusion channel bottom plate (11) containing cooling water and fixedly installed on the double screw extruder body (1), and an industrial water chiller (2) for temperature control and adjustment of the extrusion channel bottom plate (11) and arranged on one side of the double screw extruder body (1), characterized in that: an outlet pipe (21) is fixedly installed on the output end of the industrial water chiller (2), a return pipe (22) is fixedly installed on the input end of the industrial water chiller (2), an outlet distribution pipe (23) is fixedly installed on the end of the outlet pipe (21) away from the industrial water chiller (2), a return distribution pipe (24) is fixedly installed on the end of the return pipe (22) away from the industrial water chiller (2), a plurality of outlet connectors (25) are fixedly installed on the outlet distribution pipe (23) in linear array, a plurality of return connectors (26) are fixedly installed on the return distribution pipe (24) in linear array and symmetrically arranged with the outlet connectors (25), a cooling pipe (27) is fixedly installed on each group of adjacent outlet connectors (25) and return connectors (26), the cooling pipe (27) penetrates through the bottom of the extrusion channel bottom plate (11) and extends into the extrusion channel bottom plate (11), and the cooling pipe (27) is arranged in an S shape in the extrusion channel bottom plate (11).

2. The temperature reduction mechanism for the extrusion channel of a twin screw extruder according to claim 1, characterized in that: A temperature sensor module (28) is fixedly installed on the bottom of the extrusion channel bottom plate (11) and extends into the extrusion channel bottom plate (11).

3. The temperature reduction mechanism for the extrusion channel of a twin screw extruder according to claim 1, characterized in that: An inlet pipe (29) and an outlet pipe (210) are fixedly installed on the bottom of the extrusion channel bottom plate (11), a valve (211) is fixedly installed on each of the inlet pipe (29) and the outlet pipe (210), and a water level sensor module (212) is fixedly installed on the bottom of the extrusion channel bottom plate (11) and extends into the extrusion channel bottom plate (11).

4. The temperature reduction mechanism for the extrusion channel of a twin screw extruder according to claim 1, characterized in that: A base (213) is fixedly installed on the bottom of the cooling pipe (27) in the extrusion channel bottom plate (11), a clamping groove (214) is formed in the base (213) and matched with the cooling pipe (27), and the cooling pipe (27) is clamped in the clamping groove (214).

5. The temperature reduction mechanism for the extrusion channel of a twin screw extruder according to claim 1, characterized in that: An ultrasonic generator (3) is fixedly installed on the double screw extruder body (1), and a plurality of ultrasonic transducers (31) are fixedly installed on the bottom of the double screw extruder body (1) in uniform distribution and electrically connected with the ultrasonic generator (3).

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