Dry vacuum pump cleaning device

Abstract

The utility model discloses a dry type vacuum pump cleaning device, which relates to the technical field of chemical industry and comprises a first base, a dimethyl sulfoxide vacuum pump is arranged on the first base, a filter and a second base are further arranged outside the first base, a gas-liquid separator is arranged at the outlet end of the dimethyl sulfoxide vacuum pump, and a gas-liquid separator is arranged at the outlet end of the second base. The two sides of the gas-liquid separator are fixedly connected with a feeding pipe and a discharging pipe respectively, the feeding pipe is connected with the outlet end of the dimethyl sulfoxide vacuum pump in an inserted mode, the discharging pipe is fixedly connected with a liquid inlet, the liquid inlet is formed in a filter, and the end, away from the liquid inlet, of the filter is fixedly connected with a connecting pipe. According to the online cleaning device for the devolatilization vacuum pump, the devolatilization vacuum pump is continuously cleaned on line by utilizing the recycled dimethyl sulfoxide, so that the long-term stable operation of the vacuum pump is ensured, the vacuum pump is not stuck, the pollution is reduced, and the cost is saved.

Description

Technical Field

[0001] This utility model relates to the technical field of the chemical industry, specifically to a dry vacuum pump cleaning device. Background Technology

[0002] With the continuous development of industrial production, enterprises have increasingly higher requirements for production efficiency. As a key piece of equipment in many production processes, the stability and continuity of dry vacuum pumps are crucial to the efficiency of the entire production process. Modern industrial production increasingly emphasizes efficiency and automation. The stability and reliability of dry vacuum pumps, as key equipment on the production line, have a significant impact on production efficiency.

[0003] In the production process of carbon fiber polymerization spinning dope, two essential steps are dimethyl sulfoxide (DMSO) recovery and devolatilization. During devolatilization, a large amount of acrylonitrile gas is condensed and recovered for reuse, while a small amount enters the vacuum pump. Due to the high temperature inside the vacuum pump, the acrylonitrile gas continuously forms polymers within the pump, gradually reducing the initially small gap between the pump rotor and the inner wall of the chamber, eventually causing it to jam and cease operation. Similarly, during the DMSO recovery and distillation process, a small amount of DMSO cannot be cooled and enters the vacuum pump, exiting as either a liquid or gas.

[0004] To address these issues, we designed a dry vacuum pump cleaning device. Utility Model Content

[0005] The purpose of this invention is to provide a dry vacuum pump cleaning device to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides a dry vacuum pump cleaning device, including a first base, on which a dimethyl sulfoxide vacuum pump is installed. A filter and a second base are also installed outside the first base. The first base is set on the ground. A gas-liquid separator is installed at the outlet end of the dimethyl sulfoxide vacuum pump. An inlet pipe and an outlet pipe are fixedly connected to both sides of the gas-liquid separator, respectively. The inlet pipe is inserted into the outlet end of the dimethyl sulfoxide vacuum pump. The outlet pipe is fixedly connected to a liquid inlet, which is installed on the filter. A connecting pipe is fixedly connected to one end of the filter away from the liquid inlet. A devolatilization vacuum pump is welded to the other end of the connecting pipe. The devolatilization vacuum pump is installed on the second base.

[0007] Furthermore, a bracket is fixedly connected to the first base, and the bottom surface of the dimethyl sulfoxide vacuum pump is fixedly connected to the bracket.

[0008] Furthermore, a connecting plate is fixedly connected to the top surface of the second base, and the top surface of the connecting plate is fixedly connected to the bottom surface of the devolatilization vacuum pump.

[0009] Furthermore, a separation pipe is fixedly connected to one end of the feed pipe, the separation pipe is installed inside the gas-liquid separator, the other end of the separation pipe is fixedly connected to the discharge pipe, an air hole is opened at the top of the separation pipe, and an incinerator is fixedly connected to the top of the gas-liquid separator, the incinerator is located above the air hole.

[0010] Furthermore, the gas-liquid separator is fixedly connected to a support leg, and the number of the support legs is multiple, with the multiple support legs set on the ground.

[0011] Furthermore, a filter pipe is fixedly connected to one end of the liquid inlet, and a liquid outlet is fixedly connected to the other end of the filter pipe. A filter device is installed inside the filter, and the filter pipe is installed inside the filter.

[0012] Furthermore, the filtration device includes a filter screen, the outer wall of which is installed at the inlet end of the liquid inlet. A filter element is slidably connected inside the filtration pipe. The filter element is positioned close to the liquid inlet. A connecting rope is fixedly connected to the outer wall of the filter element. The filter screen and the filter element are connected by the connecting rope.

[0013] Furthermore, there are two filter screens, with a gap between them. One of the filter screens is fixedly connected to a connecting post, and the two filter screens are connected by the connecting post. Both filter screens are located near the inlet end of the liquid inlet.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: the gas and liquid discharged from the dimethyl sulfoxide vacuum pump enter the gas-liquid separator through the feed pipe. The gas and liquid are separated by the separation pipe in the gas-liquid separator. The separated liquid is transported into the liquid inlet through the discharge pipe, and then enters the filter pipe through the liquid inlet. Since the filter pipe is equipped with a filter screen and filter element, impurities in the liquid are filtered out. The filtered liquid enters the devolatilization vacuum pump through the liquid outlet to clean the pipeline. In this way, the devolatilization vacuum pump is continuously cleaned online using the recovered dimethyl sulfoxide, which ensures the long-term stable operation of the vacuum pump without jamming, while reducing pollution and saving costs.

[0015] Compared with existing technologies, the beneficial effects of this invention are as follows: When separating gas and liquid, under the influence of gravity, the liquid, due to its higher density, will gradually settle to the bottom of the separator. The gas, however, will rise and exit through the outlet at the top of the separator, entering the incinerator as exhaust gas. After incineration, the combustible components and harmful substances in the exhaust gas will be burned at high temperatures, transforming them into relatively harmless substances before being released, thereby reducing environmental pollution, improving environmental impact, and reducing the emission of harmful gases. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the gas-liquid separator in this utility model;

[0018] Figure 3 This is a schematic diagram of the filter structure in this utility model.

[0019] In the diagram: 1. First base; 2. Dimethyl sulfoxide vacuum pump; 3. Gas-liquid separator; 301. Feed pipe; 302. Discharge pipe; 303. Support leg; 304. Separation pipe; 305. Vent; 306. Incinerator; 4. Filter; 401. Liquid inlet; 402. Liquid outlet; 403. Filter screen; 404. Filter element; 405. Filter pipe; 5. Second base; 6. Deviation vacuum pump. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 This utility model provides a technical solution: a dry vacuum pump cleaning device, including a first base 1, a dimethyl sulfoxide vacuum pump 2 mounted on the first base 1, a filter 4 and a second base 5 mounted outside the first base 1, the first base 1 being mounted on the ground, a gas-liquid separator 3 mounted at the outlet end of the dimethyl sulfoxide vacuum pump 2, an inlet pipe 301 and an outlet pipe 302 fixedly connected to both sides of the gas-liquid separator 3 respectively, the inlet pipe 301 being inserted into the outlet end of the dimethyl sulfoxide vacuum pump 2, the outlet pipe 302 being fixedly connected to a liquid inlet 401, the liquid inlet 401 being mounted on the filter 4, a connecting pipe being fixedly connected to one end of the filter 4 away from the liquid inlet 401, the other end of the connecting pipe being welded to a devolatilization vacuum pump 6, the devolatilization vacuum pump 6 being mounted on the second base 5, a bracket being fixedly connected to the first base 1, the bottom surface of the dimethyl sulfoxide vacuum pump 2 being fixedly connected to the bracket, a connecting plate being fixedly connected to the top surface of the second base 5, the top surface of the connecting plate being fixedly connected to the bottom surface of the devolatilization vacuum pump 6.

[0022] In practical implementation, a gas-liquid separator 3 is installed at the outlet end of the dimethyl sulfoxide vacuum pump 2, playing a crucial separation role in the entire device. An inlet pipe 301 and an outlet pipe 302 are fixedly connected to its two sides, respectively. One end of the inlet pipe 301 is connected to the gas-liquid separator 3, and the other end is inserted into the outlet end of the dimethyl sulfoxide vacuum pump 2. This connection method ensures that the material discharged from the dimethyl sulfoxide vacuum pump 2 can smoothly enter the gas-liquid separator 3. When the dimethyl sulfoxide vacuum pump 2 is working, the gas-liquid mixture discharged from its outlet end enters the gas-liquid separator 3 through the inlet pipe 301. Inside the gas-liquid separator 3, the gas and liquid are separated by utilizing the difference in physical properties between the gas and liquid phases. The separated liquid is discharged through the outlet pipe 302, and the other end of the outlet pipe 302 is fixedly connected to a liquid inlet 401. The liquid inlet 401 is installed on the filter 4, and a connecting pipe is fixedly connected to the end of the filter 4 furthest from the liquid inlet 401, serving as a channel for liquid transmission. The other end of the connecting pipe is welded with a devolatilization vacuum pump 6, which is set on the second base 5. Through this connection method, the liquid filtered by the filter 4 can enter the devolatilization vacuum pump 6. In this way, the recovered dimethyl sulfoxide is used to continuously clean the devolatilization vacuum pump 6 online, ensuring long-term stable operation of the vacuum pump without jamming, while reducing pollution and saving costs.

[0023] See Figure 2 As shown, one end of the feed pipe 301 is fixedly connected to a separation pipe 304, which is installed inside the gas-liquid separator 3. The other end of the separation pipe 304 is fixedly connected to the discharge pipe 302. A vent 305 is provided at the top of the separation pipe 304. A burner 306 is fixedly connected to the top of the gas-liquid separator 3 and is located above the vent 305. Support legs 303 are fixedly connected to the outer wall of the gas-liquid separator 3. There are multiple support legs 303, which are set on the ground.

[0024] In specific implementation, the feed pipe 301 serves as the channel for the gas-liquid mixture to enter the gas-liquid separator 3. One end of the feed pipe 301 is not only connected to the outlet end of the dimethyl sulfoxide vacuum pump 2, thus realizing the connection with the vacuum pump to receive the gas-liquid mixture, but also has a separation pipe 304 fixedly connected to this end of the feed pipe 301 inside the gas-liquid separator 3.

[0025] The separation tube 304 is integrally disposed within the internal space of the gas-liquid separator 3, and it performs the crucial separation function. The other end of the separation tube 304 is fixedly connected to the discharge pipe 302, thus forming a complete liquid flow channel. When the gas-liquid mixture enters the separation tube 304 through the feed pipe 301, it begins to separate within the internal environment of the gas-liquid separator 3 due to the difference in physical properties between the gas and liquid.

[0026] The top of the separator 304 is specially provided with a vent 305. During the separation process, due to its lighter weight, the gas gradually rises. When the gas rises to near the top of the separator 304, it can escape through the vent 305. A burner 306 is fixedly connected to the top of the gas-liquid separator 3, and the burner 306 is positioned directly above the vent 305. In this way, the gas escaping from the vent 305 directly enters the burner 306. The function of the burner 306 is to incinerate these escaping gases. Through incineration, harmful substances in the gas can be decomposed or transformed to meet environmental emission requirements, or combustible gases can be burned and utilized, while also avoiding the pollution and safety hazards that may result from the direct emission of these gases into the atmosphere.

[0027] Multiple support legs 303 are directly mounted on the ground. When the gas-liquid separator 3 is installed at the work site, each support leg 303 is in close contact with the ground. In this way, the support legs 303 evenly distribute the weight of the gas-liquid separator 3 onto the ground, effectively preventing the gas-liquid separator 3 from tilting, swaying, or shifting due to its own weight or various forces acting on it during operation.

[0028] See Figure 3 One end of the inlet 401 is fixedly connected to a filter pipe 405, and the other end of the filter pipe 405 is fixedly connected to an outlet 402. A filter device is installed inside the filter 4. The filter pipe 405 is installed inside the filter 4. The filter device includes a filter screen 403. The outer wall of the filter screen 403 is installed at the inlet end of the inlet 401. A filter element 404 is slidably connected inside the filter pipe 405. The filter element 404 is located close to the inlet 401. A connecting rope is fixedly connected to the outer wall of the filter element 404. The filter screen 403 and the filter element 404 are connected by the connecting rope.

[0029] In practice, within the structure of filter 4, a liquid flow path is established between the inlet 401 and the outlet 402 via a filter pipe 405. One end of the inlet 401 is securely connected to the filter pipe 405, providing a channel for the liquid to be filtered to enter the interior of filter 4. The other end of the filter pipe 405 is also securely connected to the outlet 402, allowing the filtered liquid to flow smoothly out of filter 4.

[0030] The filter pipe 405 is entirely housed within the internal space of the filter 4, and a filtration device is carefully installed inside the filter pipe 405 to achieve effective filtration of the liquid. The filtration device mainly consists of a filter screen 403 and a filter element 404;

[0031] Filter screen 403 plays a preliminary filtration role in the filtration process. Its outer wall is tightly fixed to the inner wall of filter pipe 405. When liquid enters filter pipe 405 from inlet 401, it first flows through filter screen 403. Filter screen 403 can intercept larger particles of impurities, suspended solids, and other substances in the liquid, performing preliminary screening and purification of the liquid.

[0032] Following the filter screen 403, a filter element 404 is fixedly connected to the inner wall of the filter pipe 405 along the direction of liquid flow. The filter element 404 is typically made of a material with higher filtration precision. It is positioned between the filter screen 403 and the liquid outlet 402. After initial filtration by the filter screen 403, the liquid continues to flow to the filter element 404. The filter element 404 further removes smaller particles, microorganisms, and other fine impurities from the liquid, thereby achieving a higher purity level for the filtered liquid. This combined filtration method of the filter screen 403 and the filter element 404 effectively improves the filtration performance of the filter 4.

[0033] See Figure 3 There are two filter screens 403, with a gap between them. One of the filter screens 403 is fixedly connected to a connecting post. The two filter screens 403 are connected through the connecting post, and both filter screens 403 are located close to the liquid inlet end of the liquid inlet 401.

[0034] In specific implementation, the arrangement of filter screens 403 within the filter pipe 405 of filter 4 has a specific design. There are two filter screens 403, which are not tightly connected within the filter pipe 405, but rather spaced apart. This spacing allows the liquid, after initial filtration through the first filter screen 403, sufficient space to flow and buffer before passing through the second filter screen 403 for further filtration.

[0035] Furthermore, both filter screens 403 are positioned close to the liquid inlet 401. When liquid enters the filter pipe 405 from the liquid inlet 401, it will first encounter these two filter screens 403. The advantage of positioning them close to the liquid inlet 401 is that they can quickly intercept larger particles of impurities as soon as the liquid enters the filter pipe 405. Since liquid usually has a large impact force and velocity in the initial stage of entry, the sequential arrangement of the two filter screens 403 can more effectively capture and block impurities. The first filter screen 403 can intercept some larger particles of impurities. After passing through the interval area, the flow state of the liquid may change to a certain extent, allowing the second filter screen 403 to further filter any impurities that may have been missed or larger particles that have been resuspended during the flow. This design improves the filtration efficiency and effect for larger particles of impurities, reduces the burden on the subsequent filter element 404 for finer filtration, and thus improves the overall filtration performance and stability of the filter 4.

[0036] Working principle: Gas and liquid discharged from the dimethyl sulfoxide vacuum pump 2 enter the gas-liquid separator 3 through the feed pipe 301. The gas and liquid are separated by the separation pipe 304 in the gas-liquid separator 3. Under the action of gravity, the liquid, due to its higher density, will gradually settle to the bottom of the separator. The gas rises and exits through the outlet at the top of the separator, entering the incinerator 306 as exhaust gas for combustion. After combustion, the combustible components and harmful substances in the exhaust gas are burned at high temperatures and converted into relatively harmless substances before being released, thereby reducing environmental pollution. The separated liquid is transported through the discharge pipe 302 into the inlet 401, and then enters the filter pipe 405. Since the filter pipe 405 is equipped with a filter screen 403 and a filter element 404, impurities in the liquid are filtered out. The filtered liquid enters the devolatilization vacuum pump 6 through the outlet 402 to clean the pipeline. In this way, the recovered dimethyl sulfoxide is used to continuously clean the devolatilization vacuum pump 6 online, ensuring long-term stable operation of the vacuum pump without jamming, while reducing pollution and saving costs.

Claims

1. Dry vacuum pump cleaning device comprising a first base (1), characterized in that, The first base (1) is provided with a dimethyl sulfoxide vacuum pump (2), and the first base (1) is further provided with a filter (4) and a second base (5); the first base (1) is arranged on the ground; the outlet end of the dimethyl sulfoxide vacuum pump (2) is provided with a gas-liquid separator (3); the gas-liquid separator (3) is fixedly connected with an inlet pipe (301) and an outlet pipe (302) on both sides; the inlet pipe (301) is inserted into the outlet end of the dimethyl sulfoxide vacuum pump (2); the outlet pipe (302) is fixedly connected with a liquid inlet (401); the liquid inlet (401) is arranged on the filter (4); the end, away from the liquid inlet (401), of the filter (4) is fixedly connected with a connecting pipe; the other end of the connecting pipe is welded with a devolatilization vacuum pump (6); and the devolatilization vacuum pump (6) is arranged on the second base (5).

2. The dry vacuum pump cleaning device of claim 1, wherein: The first base (1) is fixedly connected with a support; and the bottom surface of the dimethyl sulfoxide vacuum pump (2) is fixedly connected with the support.

3. A dry vacuum pump cleaning device according to claim 2, characterized in that: The top surface of the second base (5) is fixedly connected with a connecting plate; and the top surface of the connecting plate is fixedly connected with the bottom surface of the devolatilization vacuum pump (6).

4. A dry vacuum pump cleaning device according to claim 3, characterized in that: One end of the inlet pipe (301) is fixedly connected with a separation pipe (304); the separation pipe (304) is arranged in the gas-liquid separator (3); the other end of the separation pipe (304) is fixedly connected with the outlet pipe (302); and the top of the separation pipe (304) is provided with a gas hole (305); the top of the gas-liquid separator (3) is fixedly connected with a burner (306); and the burner (306) is arranged above the gas hole (305).

5. A dry vacuum pump cleaning device according to claim 4, characterized in that: A plurality of supporting legs (303) are fixedly connected with the outer wall of the gas-liquid separator (3); and the supporting legs (303) are arranged on the ground.

6. A dry vacuum pump cleaning device according to claim 5, characterized in that: One end of the liquid inlet (401) is fixedly connected with a filter pipe (405); the other end of the filter pipe (405) is fixedly connected with a liquid outlet (402); a filter device is arranged in the filter (4); and the filter pipe (405) is arranged in the filter (4).

7. A dry vacuum pump cleaning device according to claim 6, characterized in that: The filter device comprises filter screens (403); the outer wall of the filter screens (403) is mounted on the liquid inlet end of the liquid inlet (401); a filter core (404) is slidably connected in the filter pipe (405); the filter core (404) is arranged close to the liquid inlet (401); a connecting rope is fixedly connected with the outer wall of the filter core (404); and the filter screens (403) and the filter core (404) are connected through the connecting rope.

8. A dry vacuum pump cleaning device according to claim 7, characterized in that: The number of the filter screens (403) is two; a spacing is arranged between the two filter screens (403); one of the filter screens (403) is fixedly connected with a connecting column; the two filter screens (403) are connected through the connecting column; and the two filter screens (403) are both arranged close to the liquid inlet end of the liquid inlet (401).

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