CN221562203U

CN221562203U - Cooling device of extruder

Info

Publication number: CN221562203U
Application number: CN202323021793.9U
Authority: CN
Inventors: 何海潮; 王春雷
Original assignee: Suzhou Jwell Machinery Co Ltd
Current assignee: Suzhou Jwell Machinery Co Ltd
Priority date: 2023-11-09
Filing date: 2023-11-09
Publication date: 2024-08-20
Anticipated expiration: 2033-11-09

Abstract

The application discloses a cooling device of an extruder, the extruder comprises a machine barrel extending along the front-back direction, the cooling device comprises: the cooling water jackets are sequentially sleeved on the machine barrel from front to back, a water inlet path communicated with inlets of the cooling water jackets, a water outlet path communicated with outlets of the cooling water jackets, and a flow control unit and a pressure control unit which are arranged in the water inlet path, wherein each cooling water jacket is internally provided with a cooling flow path encircling the machine barrel; the water inlet path is used for distributing cooling media to the cooling flow paths of the cooling water jackets in sequence; the flow control unit is used for controlling the flow of the cooling medium conveyed to each cooling water jacket; the pressure control unit is configured to control the pressure in a cooling loop formed by sequentially communicating a water inlet path, a cooling flow path and a water outlet path; the cooling device is arranged below the extruder barrel in a concentrated manner, so that energy loss is reduced, energy is saved, the operation is stable, the barrel is precisely temperature-controlled, and low-temperature extrusion is realized.

Description

Cooling device of extruder

Technical Field

The application relates to the technical field of plastic extrusion equipment, in particular to a cooling device of an extruder.

Background

Because most of the extruders of EVA adhesive films in the market are used for producing low-temperature materials, water is required to be introduced into and cooled by water, the water is directly introduced into and discharged from a metal hose in the market, and the water inlet and outlet are controlled by a ball valve to realize temperature control, so that the water is not easy to leak due to insufficient control precision, the water temperature rises quickly, the quality of the produced product is low, and energy is wasted.

Disclosure of Invention

The application aims to solve the problems of low temperature control precision and energy waste in the prior art and provides a cooling device of an extruder.

In order to achieve the above purpose, the application adopts the following technical scheme: a cooling device for an extruder, said extruder comprising a barrel extending in a front-to-rear direction, said cooling device comprising:

The cooling water jackets are sequentially sleeved on the machine barrel from front to back, and each cooling water jacket is internally provided with a cooling flow path encircling the machine barrel;

The water inlet path is communicated with inlets of the plurality of cooling water jackets and is used for distributing cooling mediums to cooling flow paths of the plurality of cooling water jackets in sequence;

A flow rate control unit disposed in the water inlet path, the flow rate control unit being configured to adjust a flow rate of the cooling medium supplied to each of the cooling water jackets;

The water outlet path is communicated with the outlets of the cooling water jackets; and

And the pressure control unit is arranged in the water inlet path and is configured to control the pressure in a cooling loop formed by sequentially communicating the water inlet path, the cooling flow path and the water outlet path.

In the above technical solution, it is further preferable that the flow control unit includes a plurality of temperature detection modules, a plurality of electromagnetic valves, and a controller in signal connection with the plurality of electromagnetic valves and the temperature detection modules, each of the cooling water jackets is configured with one of the electromagnetic valves and one of the temperature detection modules, each of the temperature detection modules is configured to detect a temperature of a cylinder covered by the corresponding cooling water jacket, and the controller is configured to control operation of the corresponding electromagnetic valve based on feedback of the temperature detection module.

In the above technical scheme, it is further preferable that the water inlet path includes a water inlet pipe fixed on a frame of the extruder, the water inlet pipe has a water inlet end, a water outlet end, and a plurality of delivery ends disposed between the water inlet end and the water outlet end, the water inlet end and the water outlet end are both communicated with a cooling source for providing the cooling medium, the plurality of delivery ends are consistent with the plurality of electromagnetic valves, and each of the delivery ends is communicated with a water inlet of a corresponding electromagnetic valve.

In the above technical solution, it is further preferable that the pressure control unit includes a pressure detecting member disposed at the inlet end to detect the pressure in the cooling circuit, and a pressure adjusting member disposed at the outlet end to adjust the pressure in the cooling circuit.

In the above technical solution, it is further preferable that the pressure adjusting member is a ball valve, and the pressure detecting member is a pressure gauge.

In the above technical solution, it is further preferable that the water outlet path includes a water return pipe, and the water return pipe and the water inlet pipe are both stainless steel pipes.

In the above aspect, it is further preferable that the cooling device further includes at least one pipe clamp configured to clamp the water inlet pipe and the water return pipe at the same time.

In the above technical solution, it is further preferred that the cooling device is disposed below the barrel.

Compared with the prior art, the application has the following beneficial effects:

The cooling device is arranged below the machine barrel of the extruder in a concentrated manner, so that energy loss is reduced, energy is saved, the machine barrel is precisely temperature-controlled by the cooling device through the flow control unit, the cooling efficiency is improved, the plasticizing effect of materials in the machine barrel is improved, low-temperature extrusion is realized, and the cooling device is particularly suitable for material production of EVA adhesive films; the pressure control unit of the cooling device controls the fluid pressure in the cooling circuit so that the cooling device operates stably.

Drawings

FIG. 1 is a schematic view of a cooling device according to an embodiment of the present application disposed on an extruder;

FIG. 2 is a top view of the extruder of FIG. 1;

fig. 3 is a schematic view of the cooling apparatus (excluding the cooling water jacket) in fig. 1.

Wherein: 100. an extruder; 10. a cooling device; 1. a cooling water jacket; 2. a water inlet pipe; 21. a water inlet end; 22. a water outlet end; 23. a delivery end; 3. a small water inlet pipe; 4. an electromagnetic valve; 5. a pressure gauge; 6. a ball valve; 7. a water return pipe; 8. a backwater small pipe; 9. a pipe clamp; 20. a barrel.

Detailed Description

In order to describe the technical content, constructional features, objects and effects of the application in detail, the technical solutions of the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments of the present application. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a detailed description of various exemplary embodiments or implementations of the application. However, various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. Furthermore, the various exemplary embodiments may be different, but are not necessarily exclusive. For example, the specific shapes, configurations, and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

Hereinafter, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

The terms "front", "back", "upper", "lower" as used herein refer to the front, back, upper and lower as shown in fig. 1.

In the present application, unless explicitly specified and limited otherwise, the term "connected" is to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium.

The embodiment of the application provides a cooling device of an extruder, which is used for controlling the temperature of a machine barrel of the extruder in the production process of EVA adhesive films, so that the extruder extrudes low-temperature EVA adhesive film production materials; as shown in fig. 1 and 2, the cooling device 10 is mounted on a machine barrel 20 of the extruder 100, and is used for reducing the temperature at the machine barrel 20, so as to avoid the problem that the plasticizing effect of materials is influenced due to the fact that the temperature in the machine barrel 20 is too high during the production process of the extruder 100. The cooling device 10 is arranged below the machine barrel 20 and is close to the machine barrel 20, so that energy loss in the process of conveying cooling medium is reduced, and cooling efficiency is improved.

As shown in fig. 1 and 3, the cooling device 10 includes a plurality of cooling jackets 1, a water inlet path, a flow control unit, a water outlet path, and a pressure control unit, and the water inlet path, the plurality of cooling jackets 1, and the water outlet path are sequentially in fluid communication to form a cooling circuit for reducing the temperature of the cylinder 20.

As shown in fig. 1 and 2, a plurality of cooling water jackets 1 are sequentially sleeved on a machine barrel 20 from front to back, each cooling water jacket 1 is provided with a cooling flow path encircling the machine barrel 20, the cooling flow path is provided with an inlet for cooling medium input and an outlet for cooling medium output, the cooling medium enters the cooling flow path from the inlet and exchanges heat with the machine barrel 20 in a corresponding area, and the heat of the machine barrel in the area is taken away from the outlet by the cooling medium after heat exchange, so that the purpose of cooling the machine barrel 20 is realized.

The water intake path is in fluid communication between a cooling source that supplies a cooling medium and inlets of the plurality of cooling water jackets 1 for distributing the cooling medium supplied by the cooling source into the cooling flow paths of the respective cooling water jackets 1 in turn. The water inlet path comprises a water inlet pipe 2 and a plurality of water inlet small pipes 3, the number of the water inlet small pipes 3 is consistent with that of the cooling water jackets 1, and an inlet of each cooling water jacket 1 is connected with one water inlet small pipe 3. The water inlet pipe 2 has a water inlet end 21, a water outlet end 22 and a plurality of delivery ends 23 arranged between the water inlet end 21 and the water outlet end 22, both the water inlet end 21 and the water outlet end 22 are in fluid communication with the cooling water jacket 1, the number of delivery ends 23 is consistent with the number of cooling water jackets 1, each delivery end 23 is in fluid communication with one water inlet small pipe 3, so that the cooling medium in the water inlet pipe 2 can be delivered into each cooling water jacket 1.

As shown in fig. 1 and 3, a flow control unit for controlling the flow rate of the cooling medium fed from the water inlet pipe 2 to each cooling water jacket 1 is disposed in the water inlet path in fluid communication with the water inlet pipe 2 and the plurality of water inlet small pipes 3, respectively. The flow control unit comprises a plurality of electromagnetic valves 4 and a controller (not shown in the figure) in signal connection with the plurality of electromagnetic valves 4, the number of the electromagnetic valves 4 is consistent with that of the cooling water jackets 1, each electromagnetic valve 4 is connected between one conveying end 23 and one water inlet small pipe 3, and the flow of the cooling medium conveyed into the corresponding cooling water jackets 1 is controlled by the opening degree of the internal valve core. A temperature detection module (not shown in the figure) is arranged on the machine barrel of the corresponding area of each cooling water jacket 1, the temperature detection module is used for testing the temperature of the machine barrel of the area, the temperature detection module is connected with a controller in a signal manner, and the controller is configured to control the opening degree of the valve core of the corresponding electromagnetic valve 4 according to the feedback of each temperature detection module; when the temperature detection module detects that the temperature of the corresponding barrel area is higher, the controller controls the valve core of the electromagnetic valve 4 to be opened greatly, so that the flow rate of the cooling medium conveyed to the corresponding cooling water jacket 1 is large, the temperature of the barrel of the area can be quickly reduced, when the temperature of the barrel of the area is reduced to a proper range, the corresponding electromagnetic valve 4 is closed, and the electromagnetic valve 4 stops conveying the cooling medium to the cooling water jacket 1. The flow control unit accurately controls the temperature of the machine barrel through each electromagnetic valve 4 and a corresponding temperature detection module on the machine barrel, improves the cooling efficiency, and realizes low-temperature extrusion after the materials are fully plasticized.

The water inlet end 21 of the water inlet pipe 2 is provided with a pressure detection part of a pressure control unit, the water outlet end 22 is provided with a pressure regulation part of the pressure control unit, in the embodiment of the application, the pressure detection part is a pressure gauge 5, the pressure regulation part is a ball valve 6, and the pressure gauge 5 is used for detecting the pressure in the cooling circuit and displaying the pressure in the current cooling circuit through a visual dial plate; the ball valve 6 is arranged between the water outlet 22 and the cooling source for controlling the on-off between the water outlet 22 and the cooling source, thereby regulating the pressure in the cooling circuit. Since the cooling device is provided below the cylinder 20, the water intake pipe 2 is filled with the cooling medium, and when the electromagnetic valve 4 is opened, the pressure of the cooling medium delivered to the cooling water jacket 1 is given. When the machine barrel 20 needs to be cooled, the ball valve 6 is closed, the water inlet pipe 2 is filled with cooling medium, the electromagnetic valves 4 are opened under the control of the controller, the cooling medium is conveyed into the corresponding cooling water jacket 1 by each electromagnetic valve 4, an operator observes the pressure gauge 5 to adjust the opening and closing of the ball valve 6, when the pressure gauge 5 displays high pressure, the ball valve 6 is opened to enable the pressure in the cooling circuit to be reduced to a proper range, and when the pressure gauge 5 displays low pressure, the ball valve 6 is closed to enable the pressure in the cooling circuit to be increased to a proper range. The operator controls the fluid pressure in the cooling circuit by means of a pressure control unit arranged in the water inlet path, so that the cooling device 10 pressure-steadily delivers the cooling medium.

The water outlet path is connected between the outlets of the cooling water jackets 1 and the external cooling pool, and conveys the cooling medium which is output by the cooling water jackets 1 and carries the heat of the machine barrel into the cooling pool, and the cooling medium is conveyed to the cooling source for recycling after the heat in the cooling medium to be output is released. The water outlet path comprises a water return pipe 7 and a plurality of water return small pipes 8, the water return pipe 7 is connected with an external cooling pool, the water return small pipes 8 are respectively communicated with the cooling water jackets 1, the water return small pipes 8 are respectively in fluid communication with the corresponding outlets of the cooling water jackets 1 and the water return pipe 7, and the water return pipe 7 uniformly receives cooling media output by the cooling water jackets 1. The water return pipe 7 and the water inlet pipe 2 are stainless steel pipes, the water inlet small pipe 3 and the water return small pipe 8 adopt copper pipes, each water inlet small pipe 3 is connected between the corresponding cooling water jacket 1 and the corresponding electromagnetic valve 4, and the water inlet pipe 2 uniformly provides cooling medium for the plurality of electromagnetic valves 4; the backwater tubules 8 convey the cooling medium output by the plurality of cooling water jackets 1 to the backwater pipe 7, and the backwater pipe 7 uniformly receives and conveys the cooling medium carrying heat, so that the cooling loop of the whole cooling device 10 has simple structure, attractive and orderly arrangement and reduces the probability of water leakage.

The cooling device 10 further comprises a pipe clamp 9 for clamping the water inlet pipe 2 and the water return pipe 7, wherein the pipe clamp 9 can clamp the water return pipe 7 and the water inlet pipe 2 simultaneously, the water return pipe 7 and the water inlet pipe 2 are fixed on a frame of the extruder, the vibration of a pipeline during conveying of a cooling medium is avoided, the running stability of the cooling device 10 is improved, and noise is reduced.

The cooling device 10 is arranged below the extruder barrel in a concentrated manner, so that energy loss is reduced, energy is saved, the cooling device is used for precisely controlling the temperature of the barrel through the flow control unit, cooling efficiency is improved, plasticizing effect of materials in the barrel is improved, low-temperature extrusion is realized, and the cooling device is particularly suitable for material production of EVA adhesive films; the pressure control unit of the cooling device controls the fluid pressure in the cooling circuit so that the cooling device operates stably.

The foregoing has shown and described the basic principles, principal features and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the application, and various changes and modifications may be made therein without departing from the spirit and scope of the application, the scope of which is defined in the appended claims, specification and their equivalents.

Claims

1. A cooling device for an extruder, said extruder comprising a barrel extending in a front-to-rear direction, said cooling device comprising:

The water inlet path is communicated with inlets of the plurality of cooling water jackets and is used for distributing cooling mediums to cooling flow paths of the plurality of cooling water jackets in sequence; the water inlet path comprises a water inlet pipe fixed on a frame of the extruder, the water inlet pipe is provided with a water inlet end, a water outlet end and a plurality of conveying ends arranged between the water inlet end and the water outlet end, and the water inlet end and the water outlet end are communicated with a cooling source for providing the cooling medium;

A pressure control unit arranged in the water inlet path, the pressure control unit being configured to control the pressure in a cooling circuit formed by sequentially communicating the water inlet path, the cooling flow path and the water outlet path; the pressure control unit comprises a pressure detection part and a pressure regulating part, wherein the pressure detection part is arranged at the water inlet end to detect the pressure in the cooling circuit, and the pressure regulating part is arranged at the water outlet end to regulate the pressure in the cooling circuit.

2. The cooling apparatus of claim 1, wherein the flow control unit comprises a plurality of temperature detection modules, a plurality of solenoid valves, and a controller in signal communication with the plurality of solenoid valves and the temperature detection modules, each of the cooling jacket is configured with one of the solenoid valves and one of the temperature detection modules, each of the temperature detection modules is configured to detect a temperature of a barrel covered by the corresponding cooling jacket, and the controller is configured to control operation of the corresponding solenoid valve based on feedback from the temperature detection modules.

3. The cooling device of claim 2, wherein said plurality of delivery ends are in common with said plurality of solenoid valves, and each of said delivery ends is in communication with a water inlet of a respective said solenoid valve.

4. The cooling device of claim 1, wherein the pressure adjusting member is a ball valve and the pressure detecting member is a pressure gauge.

5. The cooling device of claim 1, wherein the water outlet path comprises a water return pipe, and the water return pipe and the water inlet pipe are stainless steel pipes.

6. The cooling device of claim 5, further comprising at least one tube clamp configured to clamp the inlet tube and the return tube simultaneously.

7. The cooling device of claim 1, wherein said cooling device is disposed below said barrel.