Comprehensive utilization device for heat energy of plastic extruding machine

Abstract

The utility model relates to the field of heat energy recovery and utilization, in particular to a comprehensive utilization device for heat energy of a plastic extruding machine, which comprises a plastic extruding machine body, a mold, an air cooling machine, a cold air pipe, an air pressure machine, a connecting pipe, a flow guide pipe and a raw material bin, an air cooling structure is arranged on an existing plastic extruding machine, the inner wall of a PE pipe is cooled in an air cooling heat dissipation mode, meanwhile, extracted hot air is used for drying PE raw materials, the inner wall of the PE pipe can be cooled in time, the cooling effect is better, and the purposes of energy conservation and environment protection can be achieved; and cold air is guided into the mold through the cold air pipe to cool the inner wall of the PE pipe, so that the inner wall of the PE pipe can be cooled in time, heat energy of the plastic extruding machine is pumped out through the air pressure machine and then input into the PVC raw material bin, raw materials can be dried, cyclic utilization of hot air is achieved, and energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The utility model relates to the field of heat energy recovery and utilization, in particular to a device for comprehensive utilization of heat energy of an extruder. Background Art

[0002] PE pipes, namely polyethylene pipes, are plastic pipes widely used in various fields. The production process of PE pipes mainly includes steps such as raw material preparation, melting extrusion, extrusion molding, cooling and solidification, cutting and inspection, and packaging and storage. Generally, PE pipes are extruded and formed by pushing molten polyethylene through the propeller and barrel of an extruder into a mold.

[0003] When the existing extruder usually produces PE pipes, it uses the water-cooling method to extrude the PE pipes out of the mold and the negative pressure cooling box. When preparing large-diameter PE pipes, due to the inner wall of the extruded PE pipes not being cooled in time, internal deformation is likely to occur.

[0004] Therefore, aiming at the problem that when the above-mentioned extruder uses the water-cooling method to extrude the PE pipes out of the mold and the negative pressure cooling box, and when preparing large-diameter PE pipes, the inner wall of the extruded PE pipes is not cooled in time and internal deformation is likely to occur, by using the air-cooling and heat dissipation method to cool the inner wall of the PE pipes, the inner wall of the PE pipes can be cooled in time, making the cooling effect better. At the same time, the extracted hot air can be used for drying PE raw materials, which can achieve the purpose of energy conservation and environmental protection. Summary of the Utility Model

[0005] In order to overcome the problem that when the existing extruder usually produces PE pipes, it uses the water-cooling method to extrude the PE pipes out of the mold and the negative pressure cooling box, and when preparing large-diameter PE pipes, the inner wall of the extruded PE pipes is not cooled in time and internal deformation is likely to occur.

[0006] The technical solution of the utility model is: a device for comprehensive utilization of heat energy of an extruder, which includes an extruder body, a mold, an air-cooling machine, a cold air pipe, a wind press, a connecting pipe, a diversion pipe and a raw material bin. A mold for forming PE pipes is fixedly installed at the left end of the extruder body. An air-cooling machine is fixedly installed below between the mold and the extruder body. The air-cooling machine is communicated with one end of the mold close to the extruder body through a cold air pipe. A wind press is arranged between the mold and the raw material bin. The right end of the wind press is communicated with the mold through a connecting pipe. The left end of the wind press is communicated with the raw material bin through a diversion pipe.

[0007] Preferably, by setting an air-cooling structure on the existing extruder and using the air-cooling method to cool the inner wall of the PE pipe, and at the same time using the extracted hot air for drying the PE raw material, it is possible to cool the inner wall of the PE pipe in a timely manner, making the cooling effect better, and also achieving the purpose of energy conservation and environmental protection. By setting a cold air blower, cold air can be generated and introduced into the mold through a cold air pipe to cool and lower the temperature of the inner wall of the PE pipe, so that the inner wall of the PE pipe can be cooled in a timely manner. After the heat energy of the extruder is extracted by a wind press and input into the PVC raw material bin, the raw material can be dried, thus realizing the recycling of hot air, which is relatively energy-saving and environmentally friendly. By setting a temperature control device on the raw material bin and the heat energy conveying pipe, the temperature of the hot air at the diversion pipe can be monitored in real time, so as to facilitate controlling the inflow and outflow of hot air into the raw material bin according to the actual drying situation, so as to avoid the decline of the raw material performance caused by over-drying.

[0008] Preferably, a control valve is provided on the outer side of the connection between the diversion pipe and the wind press, and a temperature controller is provided on the outer side of the control valve. By setting a temperature control device on the raw material bin and the heat energy conveying pipe, the temperature of the hot air at the diversion pipe can be detected in real time.

[0009] Preferably, the air-cooling machine generates cold air and introduces the cold air into the mold through a cold air pipe. The wind press sucks the hot air in the mold through a connecting pipe and introduces it into the raw material bin through a diversion pipe to dry the raw material. After the heat energy of the extruder is extracted by a wind press and input into the PVC raw material bin, the raw material can be dried, thus realizing the recycling of hot air, which is relatively energy-saving and environmentally friendly.

[0010] Preferably, a feed hopper is fixedly connected to the upper right part of the extruder body, and a conveying module is fixedly installed on the right end of the extruder body.

[0011] Preferably, the raw material bin is used to hold the PE raw material. A discharge hopper is fixedly connected to the lower end of the raw material bin, and a control valve is provided on the outer side of the discharge hopper. By setting the control valve, it is convenient to control the inflow and outflow of the raw material according to actual needs, and the operation is simple and fast.

[0012] Preferably, the lower ends of the extruder body and the mold are fixedly connected with first support columns in a left-right symmetrical manner, and the lower ends of the first support columns are fixedly connected with first support seats. By setting the first support seats at the lower ends of the first support columns, the contact area with the ground can be increased, thereby further increasing the stability of the extruder body and the mold.

[0013] Preferably, the lower end of the wind press is fixedly connected with a second support seat, and three groups of second support columns are fixedly connected around the lower end of the raw material bin. By setting the second support columns and the second support seats to support the raw material bin and the wind press respectively, the stability during the working process can be maintained.

[0014] The beneficial effects of the present utility model:

[0015] 1. By setting an air cooling structure on the existing extruder, the inner wall of the PE pipe is cooled by air cooling and heat dissipation, and the extracted hot air is used for drying the PE raw materials, which can not only cool the inner wall of the PE pipe in time, so that the cooling effect is better, but also achieve the purpose of energy saving and environmental protection. By setting a cold air machine, cold air can be produced, and the cold air is introduced into the mold through the cold air pipe to cool the inner wall of the PE pipe, so that the inner wall of the PE pipe can be cooled in time. The heat energy of the extruder is extracted by the air compressor and input into the PVC raw material warehouse, which can dry the raw materials, thereby realizing the recycling of hot air, which is more energy-saving and environmentally friendly;

[0016] 2. By installing temperature control devices on the raw material bin and the heat energy delivery pipe, the hot air temperature at the guide pipe can be monitored in real time, so as to control the hot air in and out of the raw material bin according to the actual drying conditions, so as to avoid excessive drying and resulting in a decrease in raw material performance;

[0017] 3. The first support column and the second support column are respectively used to support the extruder body, the mold and the raw material bin, so as to ensure their stability during the working process. The second support seat is set at the lower end of the air press to increase the contact area with the ground, thereby increasing the stability of the air press. The first support seat is set at the lower end of the first support column to increase the contact area with the ground, thereby further increasing the stability of the extruder body and the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 What is shown is the overall three-dimensional structure schematic diagram of the novel extruder heat energy comprehensive utilization device of the utility model;

[0019] Figure 2 Shown is a three-dimensional structural schematic diagram of the new extruder heat energy comprehensive utilization device of the utility model from another angle;

[0020] Figure 3 What is shown is a three-dimensional structural schematic diagram of an air cooler of a new extruder heat energy comprehensive utilization device of the utility model;

[0021] Figure 4 What is shown is a three-dimensional structural schematic diagram of the wind compressor of the new extruder heat energy comprehensive utilization device of the utility model.

[0022] Explanation of the accompanying drawings: 1. Extruder body; 2. Conveying module; 3. Feed hopper; 4. Mold; 5. Air cooler; 6. Cold air duct; 7. Air compressor; 8. Connecting pipe; 9. Flow guide pipe; 10. Temperature controller; 11. Raw material bin; 12. Discharge hopper; 13. First support column; 14. First support seat; 15. Second support seat; 16. Second support column. DETAILED DESCRIPTION

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Please refer to Figure 1 - Figure 2 , the present utility model provides an embodiment: a comprehensive heat energy utilization device for an extruder, including an extruder body 1, a mold 4, an air cooler 5, a cold air duct 6, a wind press 7, a connecting pipe 8, a diversion pipe 9, and a raw material bin 11. A mold 4 is fixedly installed at the left end of the extruder body 1. An air cooler 5 is provided below between the mold 4 and the extruder body 1. One end of the air cooler 5 close to the extruder body 1 is communicated with the mold 4 through a cold air duct 6. A wind press 7 is fixedly installed between the mold 4 and the raw material bin 11. The right end of the wind press 7 is communicated with the mold 4 through a connecting pipe 8, and the left end of the wind press 7 is communicated with the raw material bin 11 through a diversion pipe 9.

[0025] Please refer to Figure 3 , in this embodiment, a feed hopper 3 is fixedly connected to the upper right part of the extruder body 1. A transfer module 2 is fixedly installed at the right end of the extruder body 1. The lower ends of both the extruder body 1 and the mold 4 are fixedly connected with first support columns 13 in a left-right symmetrical manner. The lower ends of the first support columns 13 are fixedly connected with first support seats 14. By providing the first support seats 14 at the lower ends of the first support columns 13, the contact area with the ground can be increased, thereby further increasing the stability of the extruder body 1 and the mold 4.

[0026] Please refer to Figure 4 , in this embodiment, the raw material bin 11 is used to store PE raw materials. A discharge hopper 12 is fixedly connected to the lower end of the raw material bin 11. A control valve is provided outside the discharge hopper 12. By providing the control valve, it is convenient to control the entry and exit of raw materials according to actual needs, and the operation is simple and fast. The lower end of the wind press 7 is fixedly connected with a second support seat 15. Three groups of second support columns 16 are fixedly connected around the lower end of the raw material bin 11. By providing the second support columns 16 and the second support seat 15 to support the raw material bin 11 and the wind press 7 respectively, the stability during the working process can be maintained.

[0027] When working, first place the device on a stable ground to keep the device stable, and then turn on the switches of each relevant structure;

[0028] Then, the extrusion raw materials are introduced into the extruder body 1 through the feed hopper 3, and the extrusion raw materials are conveyed and extruded into a formed shape through the transfer module 2;

[0029] After that, the extruded pipe enters the mold 4 for further forming. At the same time, the air cooler 5 is used to generate cold air, and the cold air is introduced into the mold 4 through the cold air duct 6;

[0030] Then, the cold air introduced into the mold 4 continuously cools the inner wall of the internal PE pipe forward;

[0031] Meanwhile, the hot air in the mold 4 is sucked into the air press 7 through the connecting pipe 8 by the air press 7, and then continues to be introduced into the raw material bin 11 through the diversion pipe 9 to dry the raw materials in the raw material bin 11 with the hot air;

[0032] While drying the raw materials in the raw material bin 11, the temperature change at the diversion pipe 9 is detected by the temperature controller 10, and the hot air inlet and outlet are appropriately controlled according to the actual drying situation;

[0033] Finally, after the work is completed, the cooled PE pipe in the mold 4 is exported, and the control valve at the lower end of the raw material bin 11 is opened to export the dried raw materials for standby.

[0034] Through the above steps, by setting an air-cooling structure on the existing extruder and using the air-cooling and heat dissipation method to cool the inner wall of the PE pipe, and at the same time using the extracted hot air for drying the PE raw materials, the inner wall of the PE pipe can be cooled in time, resulting in better cooling effect, and the purpose of energy conservation and environmental protection can also be achieved. By setting a cold air blower, cold air can be generated, and the cold air is introduced into the mold 4 through the cold air pipe 6 to cool and lower the temperature of the inner wall of the PE pipe, so that the inner wall of the PE pipe can be cooled in time. After the heat energy of the extruder is extracted by the air press 7 and input into the PVC raw material bin 11, the raw materials can be dried, thus realizing the recycling of hot air, which is relatively energy-saving and environmentally friendly. This is to solve the problem that when the existing extruder usually produces PE pipes, the PE pipes are extruded from the mold 4 and the negative pressure cooling box by using the water-cooling method. When preparing large-diameter PE pipes, the inner wall of the extruded PE pipe is not cooled in time and is prone to internal deformation.

Claims

1. An integrated thermal energy utilization device for an extrusion machine, comprising an extrusion machine body (1); characterized in that: It further includes a mold (4), an air-cooling machine (5), a cold air duct (6), a pneumatic press (7), a connecting pipe (8), a diversion pipe (9) and a raw material bin (11). The mold (4) is fixedly installed at the left end of the extruder body (1). The air-cooling machine (5) is fixedly installed below between the mold (4) and the extruder body (1). The air-cooling machine (5) is communicated with one end of the mold (4) close to the extruder body (1) through the cold air duct (6). A pneumatic press (7) is provided between the mold (4) and the raw material bin (11). The right end of the pneumatic press (7) is communicated with the mold (4) through the connecting pipe (8). The left end of the pneumatic press (7) is communicated with the raw material bin (11) through the diversion pipe (9).

2. The comprehensive heat energy utilization device of an extrusion machine according to claim 1, characterized in that: A control valve is provided outside the connection part of the diversion pipe (9) and the pneumatic press (7), and a temperature controller (10) is provided outside the control valve.

3. The comprehensive heat energy utilization device for an extrusion machine according to claim 1, wherein: The air-cooling machine (5) manufactures cold air and introduces the cold air into the mold (4) through the cold air duct (6). The pneumatic press (7) sucks the hot air in the mold (4) through the connecting pipe (8) and introduces it into the raw material bin (11) through the diversion pipe (9).

4. The thermal energy comprehensive utilization device of an extrusion machine according to claim 1, characterized in that: The right part of the upper end of the extruder body (1) is fixedly connected with a feed hopper (3), and the right end of the extruder body (1) is fixedly installed with a conveying module (2).

5. The thermal energy comprehensive utilization device of an extrusion machine according to claim 1, characterized in that: The lower end of the raw material bin (11) is fixedly connected with a discharge hopper (12), and a control valve is provided outside the discharge hopper (12).

6. The thermal energy comprehensive utilization device of an extrusion machine according to claim 1, wherein: The lower ends of the extruder body (1) and the mold (4) are both fixedly connected with first support columns (13) in left-right symmetry, and the lower ends of the first support columns (13) are fixedly connected with first support seats (14).

7. The thermal energy comprehensive utilization device of an extrusion machine according to claim 1, characterized in that: The lower end of the pneumatic press (7) is fixedly connected with a second support seat (15), and three groups of second support columns (16) are fixedly connected around the lower end of the raw material bin (11).

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