Vacuum pipeline protection device

Abstract

The utility model relates to a vacuum pipeline protection device which comprises a first four-way pipe and a second four-way pipe, a second connecting pipeline is in threaded connection between the first four-way pipe and the second four-way pipe, and the other three connecting ports of the first four-way pipe are in threaded connection with a third connecting pipeline, a fourth connecting pipeline and a fifth connecting pipeline respectively. One end of the third connecting pipeline is provided with a blind plug quick connector dismounting mechanism, one end of the fourth connecting pipeline is in threaded connection with an external vacuum pump body, and one end of the fifth connecting pipeline is in threaded connection with a dredging cover. The utility model aims to solve the problems that when the twin-screw extruder is used for granulating, small molecules generated by material heating are separated out, sucked out by the suction force of a vacuum pump and attached to a vacuum pipeline for a long time, the pipeline is blocked and needs to be disassembled and cleaned, the vacuum pump is burnt out without being cleaned in time, and the cleaning of the pipeline wastes time and influences the yield and quality; therefore, certain limitation is caused to use of the vacuum pipeline, and actual use is not facilitated.

Description

Technical Field

[0001] This utility model relates to the field of twin-screw extruder technology, and in particular to a vacuum pipeline protection device. Background Technology

[0002] Twin-screw extruders are commonly used equipment in plastics processing. Their background technologies mainly include the following aspects: extrusion process, twin-screw extruder, vacuum piping and control system. Among them, vacuum piping is used to remove gas and moisture generated during the extrusion process to ensure the quality of the extruded products. The background technologies of vacuum piping include the selection and control of vacuum pumps, the design and layout of piping structures, etc.

[0003] During granulation in a twin-screw extruder, the material is heated to produce small molecules that precipitate out. These molecules are then drawn out by the vacuum pump and adhere to the vacuum pipes. Over time, the pipes become clogged, requiring disassembly and cleaning. Failure to clean them promptly will cause the vacuum pump to burn out. Furthermore, cleaning the pipes is time-consuming and affects both output and quality. This imposes certain limitations on the use of vacuum pipes, making them unsuitable for practical applications. Utility Model Content

[0004] In view of the above-mentioned problems existing in the prior art, the main objective of this utility model is to provide a vacuum pipeline protection device.

[0005] The technical solution of this utility model is as follows: a vacuum pipeline protection device includes a first four-way pipe and a second four-way pipe. A second connecting pipe is threadedly connected between the first four-way pipe and the second four-way pipe. The other three connecting ports of the first four-way pipe are respectively threadedly connected to a third connecting pipe, a fourth connecting pipe and a fifth connecting pipe. One end of the third connecting pipe is provided with a blind plug quick-release joint mechanism. One end of the fourth connecting pipe is threadedly connected to an external vacuum pump body. One end of the fifth connecting pipe is threadedly connected to a drain cover. The bottom connecting port of the second four-way pipe is threadedly connected to a first connecting pipe.

[0006] In a preferred embodiment, the blind plug quick-release connector mechanism includes a tee pipe, which is threaded to one end of a third connecting pipe, and the other two connecting ports of the tee pipe are respectively threaded to a second threaded blind plug and a quick connector.

[0007] In a preferred embodiment, the second four-way pipe is threaded with a first threaded blind plug at each of the two connection ports corresponding to the first connecting pipe and the second connecting pipe.

[0008] In a preferred embodiment, all of the above-mentioned threaded connections are filled with sealing strips.

[0009] In a preferred embodiment, the first connecting pipe, the second connecting pipe, the third connecting pipe, the fourth connecting pipe, and the fifth connecting pipe are all vacuum pipes.

[0010] Compared with existing technologies, the advantages of this invention are as follows: This protective device adds a vertical pipe to the original long, straight pipe, with a blind plug quick-release connector at the upper end and an easy-to-unscrew knob cap at the lower end. During production, after the vacuum pump draws out small molecules, gravity causes the drawn-out material to flow into the lower half of the vertical pipe, preventing it from flowing back to the vacuum pump. Furthermore, cleaning the vertical pipe is more convenient. When cleaning, there is no need to disassemble the pipe; simply remove the blind plug quick-release connector and the knob cap, and use a steel pipe to pour the contents from top to bottom, thus completing the cleaning of the vacuum pipe. Attached Figure Description

[0011] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a vacuum pipeline protection device;

[0012] Figure 2 This utility model provides a vacuum pipeline protection device. Figure 1 Enlarged view of point A in the middle;

[0013] Figure 3 This utility model provides a vacuum pipeline protection device. Figure 1 Enlarged view of point B in the middle;

[0014] Figure 4 This utility model provides a vacuum pipeline protection device. Figure 1 Enlarged view of point C in the middle.

[0015] Legend: 1. First four-way pipe; 2. First connecting pipe; 3. Second connecting pipe; 4. Third connecting pipe; 5. Fourth connecting pipe; 6. Fifth connecting pipe; 7. Sealing strip; 8. Second four-way pipe; 9. First threaded blind plug; 10. T-shaped pipe; 11. Quick connector; 12. Drain cover; 13. Second threaded blind plug. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] Example 1

[0018] like Figures 1-4As shown, this utility model provides a technical solution: a vacuum pipeline protection device, including a first four-way pipe 1 and a second four-way pipe 8, characterized in that: a second connecting pipe 3 is threadedly connected between the first four-way pipe 1 and the second four-way pipe 8, and the other three connecting ports of the first four-way pipe 1 are respectively threadedly connected to a third connecting pipe 4, a fourth connecting pipe 5 and a fifth connecting pipe 6, one end of the third connecting pipe 4 is provided with a blind plug joint mechanism, one end of the fourth connecting pipe 5 is threadedly connected to an external vacuum pump body, one end of the fifth connecting pipe 6 is threadedly connected to a drain cover 12, and the bottom connecting port of the second four-way pipe 8 is threadedly connected to a first connecting pipe 2, wherein the first connecting pipe 2, the second connecting pipe 3, the third connecting pipe 4, the fourth connecting pipe 5 and the fifth connecting pipe 6 are all vacuum pipelines.

[0019] Through the above embodiments, when cleaning the vacuum pipeline, the blind plug joint mechanism is removed by the staff, and then the unblocking cover 12 at the bottom of the fifth connecting pipe 6 is turned. Then, an external cleaning steel pipe is used to clean the dirt attached to the inner wall of the vacuum pipeline from top to bottom, which facilitates the removal of dirt attached to the inner wall of the vacuum pipeline. This method of cleaning the dirt on the inner wall of the vacuum pipeline can protect the vacuum pipeline and further increase the service life and efficiency of the vacuum pipeline.

[0020] Example 2

[0021] like Figures 1-4 As shown, the quick-release connector mechanism for blind plugs includes a tee pipe 10, which is threaded to one end of a third connecting pipe 4. The other two connecting ports of the tee pipe 10 are respectively threaded to a second threaded blind plug 13 and a quick connector 11. By removing the second threaded blind plug 13 from the top of the tee pipe 10, the unblocking of the vacuum pipeline is further facilitated.

[0022] The second four-way pipe 8 has a first threaded blind plug 9 threadedly connected to each of the two connection ports of the first connecting pipe 2 and the second connecting pipe 3. When cleaning the second connecting pipe 3 and the first connecting pipe 2, the inner wall of the vacuum pipe can be cleaned by turning the two first threaded blind plugs 9 with a cleaning steel pipe.

[0023] All of the aforementioned threaded connections are filled with sealing strips 7. By filling the connections with sealing strips 7, the sealing effect at each vacuum pipe connection is enhanced, further facilitating the use of the vacuum pipes.

[0024] Working principle: When cleaning the vacuum pipeline, the worker removes the second threaded blind plug 13 at the top of the tee pipe 10, then unscrews the drain cover 12 at the bottom of the fifth connecting pipe 6. Next, an external cleaning steel pipe is used to remove dirt adhering to the inner wall of the vacuum pipeline from top to bottom. The scraped dirt is discharged from the vacuum pipeline through the bottom of the fifth connecting pipe 6. When cleaning and protecting the second connecting pipe 3 and the first connecting pipe 2, the two first threaded blind plugs 9 are screwed on, and the cleaning steel pipe is inserted from the opening of the second four-way pipe 8 to further clean the inner wall of the vacuum pipeline.

Claims

1. A vacuum pipeline protection device, comprising a first four-way pipe (1) and a second four-way pipe (8), characterized in that: A second connecting pipe (3) is threaded between the first four-way pipe (1) and the second four-way pipe (8). The other three connecting ports of the first four-way pipe (1) are respectively threaded with a third connecting pipe (4), a fourth connecting pipe (5) and a fifth connecting pipe (6). One end of the third connecting pipe (4) is provided with a blind plug joint mechanism. One end of the fourth connecting pipe (5) is threaded with an external vacuum pump body. One end of the fifth connecting pipe (6) is threaded with a drain cover (12). The bottom connecting port of the second four-way pipe (8) is threaded with a first connecting pipe (2).

2. The vacuum pipeline protection device according to claim 1, characterized in that: The blind plug joint mechanism includes a three-way pipe (10), which is threaded to one end of a third connecting pipe (4). The other two connecting ports of the three-way pipe (10) are respectively threaded to a second threaded blind plug (13) and a quick connector (11).

3. The vacuum pipeline protection device according to claim 1, characterized in that: The second four-way pipe (8) has a first threaded blind plug (9) threadedly connected to both the first connecting pipe (2) and the second connecting pipe (3).

4. A vacuum pipeline protection device according to any one of claims 1-3, characterized in that: All of the above threaded connections are filled with sealing strips (7).

5. A vacuum pipeline protection device according to any one of claims 1-3, characterized in that: The first connecting pipe (2), the second connecting pipe (3), the third connecting pipe (4), the fourth connecting pipe (5) and the fifth connecting pipe (6) are all vacuum pipes.

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