Cooling device for discharging section pipeline of single-screw extruder

Abstract

The utility model relates to the technical field of single-screw extruders, discloses a pipeline cooling device for a blanking section of a single-screw extruder, and solves the problem that the inner wall of the cooling device is easy to accumulate scale, so that the cooling effect is influenced. Through the water pump, the spiral water pipe, the heat exchanger, the filter screen plate and the fan, the spiral water pipe surrounds the outer surface of the machine barrel, cooling water in the water tank is circulated through the water pump, heat generated by the machine barrel is absorbed through the cooling water in the spiral water pipe, and then the heat is transmitted to recovery equipment through the heat exchanger, so that the cooling effect is achieved; and meanwhile, the filter screen plate and the fan are combined to facilitate air circulation, so that the cooling efficiency is further improved, the temperature of the machine barrel can be effectively reduced, scale can be prevented from being formed on the inner wall of the shell, and the operation efficiency and stability of the equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of single-screw extruders, in particular to a pipeline cooling device for a feeding section of a single-screw extruder. Background Art

[0002] The single screw extruder is a common plastic processing equipment used to melt and plasticize solid plastic particles into continuous profiles or products. The cooling device of the feeding section of the single screw extruder is mainly used to control the temperature of the material before entering the heating zone of the extruder to prevent the material from softening or melting prematurely, thereby affecting the subsequent melting and plasticizing process.

[0003] The utility model with Chinese patent announcement number CN204604870U discloses a PE pipe feeding cooling extrusion device, including a vacuum feeder, a reducer, a water circulation cooling device, a propulsion screw and a screw heating device. The multiple screw heating devices are evenly arranged side by side on the outer shell of the propulsion screw. The reducer, the propulsion screw, the screw heating device and the outer shell constitute a screw propulsion device. The water circulation cooling device includes an outer shell, a spiral partition, a cooling device shell, a water inlet and a water outlet, wherein the outer shell and the cooling device shell constitute a water jacket sandwich structure, the spiral partition is arranged around the water jacket sandwich structure to form a spiral cooling water channel, and the water inlet and the water outlet are arranged below the cooling device shell and communicate with the spiral cooling water channel from beginning to end.

[0004] The above patented PE pipe feeding cooling extrusion device solves the problem that the cooling of the spiral feed port of the extruder is uneven, which directly affects the speed and efficiency of the blanking, thereby seriously affecting the production quality of the PE pipe. However, after long-term use, scale is very likely to form inside the outer shell of the above cooling device, and since the cooling water channel is spiral, the difficulty of cleaning is further increased, thereby blocking the cooling water channel, affecting the normal circulation of the cooling water, and resulting in reduced cooling effect. Utility Model Content

[0005] The utility model aims to provide a single-screw extruder feed section pipeline cooling device. The device is used to work, thereby solving the problem that scale is easily accumulated on the inner wall of the existing cooling device, thereby affecting the cooling effect.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cooling device for a feeding section pipeline of a single-screw extruder, comprising a workbench, a barrel arranged on the upper surface of the workbench, a feeding pipe arranged on the outer surface of the barrel, and a feeding hopper arranged at the upper end of the feeding pipe, a shell is arranged on the upper surface of the workbench, and a cooling component for reducing the generation of scale is arranged inside the shell;

[0007] The cooling component includes a spiral water pipe wound around the outer surface of the barrel, and a water pump arranged at one end of the spiral water pipe, the water pump is located inside the workbench, a water tank is arranged at one end of the water pump, the water tank is located on one side of the workbench, a heat exchanger is arranged at the other end of the spiral water pipe, one end of the heat exchanger is connected with a recovery device, the recovery device is located on one side of the water tank, and the water tank is connected with the recovery device, a square groove is opened on the upper surface of the shell, a filter screen is arranged on the inner wall of the square groove, a box body is arranged on the upper surface of the shell, and the box body is located above the filter screen, a fan is arranged inside the box body, and an anti-corrosion layer is arranged on the inner wall of the shell.

[0008] Furthermore, the anti-corrosion layer is a component made of polytetrafluoroethylene.

[0009] Furthermore, a mounting block is provided on the inner wall of the shell, a threaded hole is provided on the upper surface of the mounting block, and the filter screen plate is threadedly connected to the threaded hole by a bolt.

[0010] Furthermore, one end of the feed pipe passes through the interior of the box body and the filter screen plate, and sealing rings are provided at the connection between the box body and the filter screen plate and the feed pipe.

[0011] Furthermore, a motor and a screw rod are arranged at an output end of the motor on one side of the barrel, a support is arranged on the outer surface of the barrel, and the bottom of the support is fixedly connected to the upper surface of the workbench.

[0012] Furthermore, a temperature sensor is arranged inside the shell, a control panel is arranged on the outer surface of the workbench, and the temperature sensor, water pump, fan and motor are all connected to the control panel through signals.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model proposes a cooling device for the discharge section pipeline of a single-screw extruder. In the prior art, scale is easily accumulated on the inner wall of the cooling device, thereby affecting the cooling effect. The utility model uses a water pump, a spiral water pipe, a heat exchanger, a filter screen plate and a fan. The spiral water pipe surrounds the outer surface of the barrel, and the cooling water in the water tank is circulated by the water pump. The heat generated by the barrel is first absorbed by the cooling water in the spiral water pipe, and then the heat is transferred to the recovery equipment through the heat exchanger to achieve the cooling effect. At the same time, the combination of the filter screen plate and the fan helps air circulation, further improving the cooling efficiency. It can not only effectively reduce the temperature of the barrel, but also avoid the formation of scale on the inner wall of the shell, thereby improving the operating efficiency and stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2It is a schematic diagram of the structure of the shell and the internal part of the box body of the utility model;

[0017] Figure 3 It is a cross-sectional view of the overall structure of the utility model;

[0018] Figure 4 For the utility model Figure 3 Enlarged detail of point A in the middle.

[0019] In the figure: 1. workbench; 2. barrel; 21. motor; 22. screw rod; 23. support; 3. discharge pipe; 4. discharge hopper; 5. shell; 6. cooling component; 61. spiral water pipe; 62. water pump; 63. water tank; 64. heat exchanger; 65. recovery equipment; 66. filter screen; 67. box body; 68. fan; 69. anti-corrosion layer; 7. mounting block; 8. sealing ring; 9. temperature sensor; 91. control panel. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0022] Combination Figure 1 A single-screw extruder discharge section pipeline cooling device includes a workbench 1, a barrel 2 arranged on the upper surface of the workbench 1, a discharge pipe 3 arranged on the outer surface of the barrel 2, and a discharge hopper 4 arranged at the upper end of the discharge pipe 3. A shell 5 is arranged on the upper surface of the workbench 1, and a cooling component 6 for reducing scale generation is arranged inside the shell 5.

[0023] The utility model is further described below in conjunction with embodiments.

[0024] Embodiment 1:

[0025] See also Figure 1-Figure 4The cooling assembly 6 includes a spiral water pipe 61 wound around the outer surface of the barrel 2, and a water pump 62 arranged at one end of the spiral water pipe 61, the water pump 62 is located inside the workbench 1, and a water tank 63 is arranged at one end of the water pump 62, and the water tank 63 is located on one side of the workbench 1. A heat exchanger 64 is arranged at the other end of the spiral water pipe 61, and one end of the heat exchanger 64 is connected to a recovery device 65, and the recovery device 65 is located on one side of the water tank 63, and the water tank 63 is connected to the recovery device 65. A square groove is opened on the upper surface of the shell 5, and a filter screen plate 66 is arranged on the inner wall of the square groove. A box body 67 is arranged on the upper surface of the shell 5, and the box body 67 is located at Above the filter screen plate 66, a fan 68 is arranged inside the box body 67, and an anti-corrosion layer 69 is arranged on the inner wall of the shell 5. The outer surface of the barrel 2 is surrounded by a spiral water pipe 61, and the cooling water in the water tank 63 is circulated by a water pump 62. The heat generated by the barrel 2 is first absorbed by the cooling water in the spiral water pipe 61, and then the heat is transferred to the recovery equipment 65 through the heat exchanger 64 to achieve a cooling effect. At the same time, the combination of the filter screen plate 66 and the fan 68 facilitates air circulation and further improves the cooling efficiency. It can not only effectively reduce the temperature of the barrel 2, but also avoid the formation of scale on the inner wall of the shell 5, thereby improving the operating efficiency and stability of the equipment.

[0026] The anti-corrosion layer 69 is a component made of polytetrafluoroethylene, which makes the inner wall of the shell 5 have good corrosion resistance and prolongs the service life.

[0027] The inner wall of the housing 5 is provided with a mounting block 7, the upper surface of the mounting block 7 is provided with a threaded hole, the filter screen plate 66 is threadedly connected to the threaded hole by bolts, and the filter screen plate 66 is connected to the mounting block 7 by bolts, which is easy to disassemble and clean.

[0028] One end of the feed pipe 3 passes through the interior of the box body 67 and the filter screen plate 66 , and a sealing ring 8 is provided at the connection between the box body 67 and the filter screen plate 66 and the feed pipe 3 to increase the sealing between the feed pipe 3 and the box body 67 and the filter screen plate 66 .

[0029] A motor 21 and a screw rod 22 are arranged at the output end of the motor 21 on one side of the barrel 2. A support 23 is arranged on the outer surface of the barrel 2. The bottom of the support 23 is fixedly connected to the upper surface of the workbench 1. The motor 21 drives the screw rod 22 to rotate and push the material forward, and the support 23 provides support.

[0030] A temperature sensor 9 is provided inside the shell 5, and a control panel 91 is provided on the outer surface of the workbench 1. The temperature sensor 9, the water pump 62, the fan 68 and the motor 21 are all connected to the control panel 91 through signals. The temperature sensor 9 monitors temperature changes and then transmits data to the control panel 91. The control panel 91 adjusts the working status of the water pump 62, the fan 68 and the motor 21 according to the settings.

[0031] Specifically, the material enters the interior of the barrel 2 through the discharge hopper 4 and the discharge pipe 3, and then the motor 21 drives the screw rod 22 to rotate and push the material forward. In order to avoid premature softening or melting of the material during discharge, a shell 5 is set in the discharge section, and cooling is performed through a cooling component 6 set in the shell 5. The water pump 62 is started to send the cooling water in the water tank 63 into the spiral water pipe 61. Since the spiral water pipe 61 is tightly wound around the outer surface of the barrel 2, it can take away the heat of the barrel 2. Since the other end of the spiral water pipe 61 is connected to the heat exchanger 64, the heat of the hot cooling water flowing out of the spiral water pipe 61 can be removed to reduce the water temperature. Then the recovery device 65 is responsible for receiving the cooling water coming out of the heat exchanger 64, and sending it back to the water tank 63 after processing, forming a closed cooling circulation system. At the same time, the fan 68 generates airflow inside the box body 67, and filters out dust in the external air through the filter screen 66. The clean air is then blown into the shell 5. The inner wall of the shell 5 is coated with an anti-corrosion material made of polytetrafluoroethylene to prevent moisture corrosion, which can not only effectively reduce the temperature of the barrel 2, but also avoid the formation of scale on the inner wall of the shell 5, thereby improving the operation efficiency and stability of the equipment. In addition, the filter screen plate 66 in the above structure is connected to the mounting block 7 by bolts, which is convenient for disassembly and cleaning, and the box body 67 and the filter screen plate 66 are both provided with a sealing ring 8 at the connection with the discharge pipe 3, thereby increasing the sealing between them. Because a temperature sensor 9 is provided inside the shell 5, a control panel 91 is provided on the outer surface of the workbench 1, and the temperature sensor 9, the water pump 62, the fan 68 and the motor 21 are all connected to the control panel 91 through signals, so that the temperature change is monitored by the temperature sensor 9, and the data is then transmitted to the control panel 91, and the control panel 91 adjusts the working state of the water pump 62, the fan 68 and the motor 21 according to the setting.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling device for a feeding section pipeline of a single screw extruder, comprising a workbench (1), a barrel (2) arranged on the upper surface of the workbench (1), a feeding pipe (3) arranged on the outer surface of the barrel (2), and a feeding hopper (4) arranged at the upper end of the feeding pipe (3), characterized in that: The upper surface of the workbench (1) is provided with a shell (5), and the interior of the shell (5) is provided with a cooling component (6) for reducing the generation of scale; The cooling assembly (6) comprises a spiral water pipe (61) wound around the outer surface of the barrel (2), and a water pump (62) arranged at one end of the spiral water pipe (61), the water pump (62) is located inside the workbench (1), a water tank (63) is arranged at one end of the water pump (62), the water tank (63) is located on one side of the workbench (1), a heat exchanger (64) is arranged at the other end of the spiral water pipe (61), and one end of the heat exchanger (64) is connected to the recovery device (65). The water tank (63) and the water tank (63) are connected to each other, the recovery device (65) is located on one side of the water tank (63), and the water tank (63) is connected to the recovery device (65), a square groove is provided on the upper surface of the shell (5), a filter screen plate (66) is provided on the inner wall of the square groove, a box body (67) is provided on the upper surface of the shell (5), and the box body (67) is located above the filter screen plate (66), a fan (68) is provided inside the box body (67), and an anti-corrosion layer (69) is provided on the inner wall of the shell (5).

2. A single screw extruder feed section pipeline cooling device according to claim 1, characterized in that: The anti-corrosion layer (69) is a component made of polytetrafluoroethylene.

3. A single screw extruder feed section pipeline cooling device according to claim 1, characterized in that: The inner wall of the housing (5) is provided with a mounting block (7), the upper surface of the mounting block (7) is provided with a threaded hole, and the filter screen plate (66) is threadedly connected to the threaded hole via a bolt.

4. A single screw extruder feed section pipeline cooling device according to claim 1, characterized in that: One end of the feed pipe (3) passes through the interior of the box body (67) and the filter screen plate (66), and a sealing ring (8) is provided at the connection between the box body (67) and the filter screen plate (66) and the feed pipe (3).

5. A single screw extruder feed section pipeline cooling device according to claim 1, characterized in that: A motor (21) and a screw rod (22) are arranged at the output end of the motor (21) on one side of the barrel (2); a support (23) is arranged on the outer surface of the barrel (2); and the bottom of the support (23) is fixedly connected to the upper surface of the workbench (1).

6. A single screw extruder feed section pipeline cooling device according to claim 1, characterized in that: A temperature sensor (9) is arranged inside the housing (5), a control panel (91) is arranged on the outer surface of the workbench (1), and the temperature sensor (9), the water pump (62), the fan (68) and the motor (21) are all connected to the control panel (91) via signals.

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