Corrosion-resistant gas treatment device for vacuum pumps

Abstract

The utility model discloses a kind of anticorrosive gas treatment devices for vacuum pump, including the air inlet pipe of being set to one end of vacuum pump, pretreatment mechanism is connected on the air inlet pipe, the pretreatment mechanism includes suction pipe, suction pipe terminal is connected with pretreater, the pretreater includes the cylinder and cylinder cover connected by flange, neutralizing container is detachably arranged in the cylinder, the top of neutralizing container is connected with cover plate, and neutralizing container and cover plate are densely covered with air hole with diameter less than reactant substance.The utility model in the present application, by setting cylinder, cylinder cover, neutralizing container, cover plate and flange, compared with prior art, not only facilitate opening pretreater, but also facilitate taking out neutralizing container, facilitate user to quickly replenish the substance in neutralizing container, ensure the effectiveness of long-term use, use more convenient.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump technology, and in particular to a corrosion-resistant gas treatment device for vacuum pumps. Background Technology

[0002] Acid mist is commonly found above pickling tanks in electroplating and battery factories. This mist, including nitric and sulfuric acid, can reach concentrations of 50-200 mg / m³, necessitating a vacuum pump-driven waste gas collection system to ensure production safety. An existing patent (publication number: CN212731571U) discloses a vacuum pump with good corrosion resistance. This invention uses a waste gas purification mechanism, where the gas passes sequentially through a catalytic pad, an acid neutralization pad, and an alkaline neutralization pad, filtering out acid and alkali elements and preventing corrosion of the vacuum pump over long-term use, thus extending its service life. However, in practical applications, since the acid and alkaline neutralization pads are fixed to the purification shell, they suffer significant wear and tear with continuous use, affecting the treatment effect on acidic and alkaline gases. Furthermore, the acid and alkaline neutralization pads are difficult to separate from the purification shell, hindering practical application. Therefore, we propose a corrosion-resistant gas treatment device for a vacuum pump. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a corrosion-resistant gas treatment device for vacuum pumps.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A corrosion-resistant gas treatment device for a vacuum pump is designed, including an inlet pipe disposed at one end of the vacuum pump, a pretreatment mechanism connected to the inlet pipe, the pretreatment mechanism including an extraction pipe, a preprocessor connected to the end of the extraction pipe, the preprocessor including a cylinder and a cylinder cover connected by a flange, a neutralization container detachably disposed inside the cylinder, a cover plate connected to the top of the neutralization container, and both the neutralization container and the cover plate being densely covered with pores with a diameter smaller than that of the reactants.

[0005] In the above scheme, a pH sensor is installed on the suction pipe, two preprocessors are provided, the cylinder cover is connected to the suction pipe through a diversion pipe, and a solenoid valve is installed on each diversion pipe.

[0006] In the above scheme, the end of the suction pipe is connected to a two-way pipe, the two ends of the two-way pipe are connected to the diverter pipe through transition pipes, the air inlet pipe is connected to a three-way pipe, and the bottom of the cylinder is connected to the end of the three-way pipe.

[0007] In the above scheme, a threaded cylinder is connected to the top of the suction pipe, a filter screen is magnetically connected to the bottom of the threaded cylinder, and an annular plate is fixed on the threaded cylinder.

[0008] In the above scheme, a rotating shaft is provided below the filter screen and is movably installed on the inner wall of the air extraction pipe, and blades are evenly installed on the rotating shaft.

[0009] In the above scheme, the neutralization container is provided with at least two connecting blocks fixed on both sides, and a series rod that moves through the connecting blocks is vertically fixed inside the cylinder, with a limit cap threaded to the top of the series rod.

[0010] In the above scheme, a separator rod is fixed on the top of the connecting block, and an insertion hole is opened on the connecting block to cooperate with the series rod.

[0011] The advantages and beneficial effects of this utility model are as follows: By setting up a pre-processor and a suction pipe, the suction force of the vacuum pump, in conjunction with the suction pipe, draws acidic or alkaline gases into the suction pipe, and then delivers them into the cylinder. They then pass sequentially through a neutralization container, allowing the acidic and alkaline gases to fully react with substances of opposite acidity or alkalinity, thus neutralizing the acidic and alkaline gases separately. This prevents corrosion of the internal structure of the vacuum pump. By setting up a cylinder, cylinder cover, neutralization container, cover plate, and flange, the cylinder and cylinder cover can be separated by disassembling the fasteners used to connect the flange. Then, by taking... The neutralization container can be replenished by simply removing and replacing it. Compared to existing technologies, this method not only makes it easier to open the preprocessor but also to remove the neutralization container, allowing users to quickly replenish the contents and ensuring long-term effectiveness. It is more convenient to use. By setting up a pH sensor, solenoid valve, diverter tube, and transition tube, the pH sensor detects the acidity or alkalinity of the gas entering through the extraction tube. By activating and deactivating different solenoid valves, the diverter tube can be freely switched between unobstructed and blocked states, thereby separating acidic and alkaline gases for separate processing. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of a corrosion-resistant gas treatment device for a vacuum pump proposed in this utility model; Figure 2 This is a schematic diagram of the pretreatment mechanism of a corrosion-resistant gas treatment device for a vacuum pump proposed in this utility model; Figure 3This is a partial structural schematic diagram of the preprocessor of a corrosion-resistant gas treatment device for a vacuum pump proposed in this utility model; Figure 4 This is a top sectional view of the neutralization container of a corrosion-resistant gas treatment device for a vacuum pump proposed in this utility model; Figure 5 This is a partial cross-sectional view of the extraction pipe of a corrosion-resistant gas treatment device for a vacuum pump proposed in this utility model.

[0014] In the diagram: 1. Vacuum pump; 2. Inlet pipe; 3. T-connector; 4. Pre-processor; 401. Cylinder body; 402. Cylinder cover; 403. Flange; 404. Neutralization container; 405. Connecting block; 406. Connecting rod; 407. Limit cap; 408. Separator; 409. Insertion hole; 410. Cover plate; 5. Output pipe; 6. T-connector; 7. Diverter pipe; 8. Solenoid valve; 9. Transition pipe; 10. Extraction pipe; 11. pH sensor; 12. Threaded cylinder; 13. Filter screen; 14. Annular plate; 15. Rotating shaft; 16. Blade. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0016] Please see Figure 1-5 The present invention provides a technical solution: a corrosion-resistant gas treatment device for a vacuum pump, including an inlet pipe 2 disposed at one end of a vacuum pump 1, and a pretreatment mechanism connected to the inlet pipe 2, the pretreatment mechanism including an extraction pipe 10. Furthermore, the top end of the suction pipe 10 is connected to a threaded cylinder 12. The top end of the inner wall of the suction pipe 10 is provided with a threaded groove that fits with the threaded cylinder 12. The bottom of the threaded cylinder 12 is magnetically connected to a filter screen 13. The filter screen 13 is used to filter dust and impurities in the air. The bottom end of the threaded cylinder 12 is open, and the bottom end of the inner wall of the threaded cylinder 12 is provided with a magnetic block. The filter screen 13 is made of magnetic metal. An annular plate 14 is coaxially fixed on the threaded cylinder 12. By rotating the annular plate 14, the threaded cylinder 12 is locked to the suction pipe 10, which also facilitates disassembly so that the filter screen 13 can be cleaned and replaced. Furthermore, a rotating shaft 15 is provided below the filter screen 13 and is movably installed on the inner wall of the suction pipe 10. Blades 16 are evenly installed on the rotating shaft 15. The suction force of the vacuum pump 1 causes the blades 16 and the rotating shaft 15 to move under the force, thereby accelerating the gas flow rate. In addition, when acidic and alkaline gases enter the suction pipe 10 at the same time, the blades 16 are used to make the two fully mixed and then directly neutralized, avoiding the consumption of the substances in the neutralization container 404.

[0017] The pre-processor 4 is connected to the end of the extraction pipe 10; Specifically, by setting up a preprocessor 4 and a suction pipe 10, the suction force of the vacuum pump 1, in conjunction with the suction pipe 10, draws acidic or alkaline gases into the suction pipe 10, and then delivers them into the cylinder 401. They then pass through the neutralization container 404 in sequence, allowing the acidic and alkaline gases to fully react with substances having opposite acidity or alkalinity, thereby neutralizing the acidic and alkaline gases respectively and preventing corrosion of the internal structure of the vacuum pump 1.

[0018] The preprocessor 4 includes a cylinder 401 and a cylinder cover 402 connected by flanges 403, with adjacent flanges 403 connected by fasteners; Furthermore, a pH sensor 11 is installed on the extraction pipe 10, and two preprocessors 4 are provided. The cylinder cover 402 is connected to the extraction pipe 10 through a diversion pipe 7. Each diversion pipe 7 is equipped with a solenoid valve 8. When only one of acidic and alkaline gases exists in the production environment, if the pH sensor 11 detects acidity, one of the solenoid valves 8 is opened to make the corresponding diversion pipe 7 unobstructed, thereby allowing the acidic gas to enter the neutralization container 404 for neutralization reaction. If the pH sensor 11 detects alkalinity, the other solenoid valve 8 is opened to make the corresponding diversion pipe 7 unobstructed, thereby allowing the alkaline gas to enter the neutralization container 404 for neutralization reaction. Furthermore, a three-way pipe 2 6 is inserted and connected to the end of the exhaust pipe 10. The two ends of the three-way pipe 2 6 are connected to the diverter pipe 7 through the transition pipe 9. The two ends of the transition pipe 9 are threaded to the three-way pipe 2 6 and the diverter pipe 7 respectively. A three-way pipe 1 3 is connected to the intake pipe 2 through a welded flange. An output pipe 5 is connected between the bottom of the cylinder 401 and the end of the three-way pipe 1 3. The diverter pipe 7 has a certain degree of elasticity and can be bent. Specifically, by setting up a pH sensor 11, a solenoid valve 8, a diverter pipe 7, and a transition pipe 9, the pH sensor 11 is used to detect the acidity or alkalinity of the gas entering through the extraction pipe 10. By starting and stopping different solenoid valves 8, the diverter pipe 7 can be freely switched between unobstructed and blocked states, thereby separating and processing acidic and alkaline gases.

[0019] A neutralization container 404 is detachably provided inside the cylinder 401; Furthermore, the neutralization container 404 is provided with at least two connecting blocks 405 fixed on both sides. A series rod 406 that moves through the connecting blocks 405 is vertically fixed inside the cylinder 401. The top of the series rod 406 is threaded with a limit cap 407. The limit cap 407 is used to prevent the neutralization container 404 from moving up and down along the series rod 406, thereby improving stability. Specifically, the upper neutralization container 404 contains a catalyst for catalytic oxidation of acidic and alkaline gases, and at least one lower neutralization container 404 contains an alkaline or acidic substance to ensure that the acidic and alkaline gases undergo a complete neutralization reaction through the neutralization container 404.

[0020] Furthermore, a separator rod 408 is fixed to the top of the connecting block 405. The separator rod 408 is used to increase the distance between adjacent neutralizing containers 404. The connecting block 405 is provided with an insertion hole 409 that mates with the series rod 406. The series rod 406 is fixed with a support plate near the bottom end to support the neutralizing container 404 located at the bottom. The neutralization container 404 contains a substance and is connected to a cover plate 410 on top. Both the neutralization container 404 and the cover plate 410 are densely covered with pores with a diameter smaller than that of the reactant to prevent the catalyst or reactant from leaving the neutralization container 404 through the pores. Specifically, by setting up a cylinder 401, a cylinder cover 402, a neutralization container 404, a cover plate 410, and a flange 403, the cylinder 401 and the cylinder cover 402 can be separated by disassembling the fasteners used to connect the flange 403. Then, by removing and replacing the neutralization container 404, the depleted substances in the neutralization container 404 can be replenished. Compared with the existing technology, it is not only easier to open the pre-processor 4, but also easier to remove the neutralization container 404, making it convenient for users to quickly replenish the substances contained in the neutralization container 404, ensuring the effectiveness of long-term use, and making it more convenient to use.

[0021] Specifically, the intake pipe 2, tee pipe 1 3, cylinder 401, cylinder cover 402, neutralization container 404, connecting block 405, series rod 406, limit cap 407, separator rod 408, cover plate 410, output pipe 5, tee pipe 2 6, diverter pipe 7, solenoid valve 8, transition pipe 9, extraction pipe 10, pH sensor 11, threaded cylinder 12, filter screen 13, rotating shaft 15 and blade 16 are all made of corrosion-resistant material.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A corrosion-resistant gas treatment device for a vacuum pump, comprising an inlet pipe (2) disposed at one end of a vacuum pump (1), characterized in that, The air inlet pipe (2) is connected to a pretreatment mechanism, which includes an air extraction pipe (10). The end of the air extraction pipe (10) is connected to a preprocessor (4). The preprocessor (4) includes a cylinder (401) and a cylinder cover (402) connected by a flange (403). A neutralization container (404) is detachably provided inside the cylinder (401). A cover plate (410) is connected to the top of the neutralization container (404). Both the neutralization container (404) and the cover plate (410) are densely covered with pores with a diameter smaller than that of the reactants.

2. The anti-corrosion gas treatment device for a vacuum pump according to claim 1, characterized in that, A pH sensor (11) is installed on the suction pipe (10). There are two preprocessors (4). The cylinder cover (402) is connected to the suction pipe (10) through a diversion pipe (7). A solenoid valve (8) is installed on each diversion pipe (7).

3. The anti-corrosion gas treatment device for a vacuum pump according to claim 2, characterized in that, The end of the suction pipe (10) is connected to a three-way pipe two (6), and the two ends of the three-way pipe two (6) are connected to the diversion pipe (7) through the transition pipe (9). The air inlet pipe (2) is connected to a three-way pipe one (3), and the bottom of the cylinder (401) is connected to the end of the three-way pipe one (3) with an output pipe (5).

4. The anti-corrosion gas treatment device for a vacuum pump according to claim 1, characterized in that, The top end of the suction pipe (10) is connected to a threaded cylinder (12), the bottom of the threaded cylinder (12) is magnetically connected to a filter screen (13), and an annular plate (14) is fixed on the threaded cylinder (12).

5. The anti-corrosion gas treatment device for a vacuum pump according to claim 4, characterized in that, Below the filter screen (13) is a rotating shaft (15) that is movably installed on the inner wall of the suction pipe (10), and blades (16) are evenly installed on the rotating shaft (15).

6. The anti-corrosion gas treatment device for a vacuum pump according to claim 1, characterized in that, The neutralization container (404) is provided with at least two connecting blocks (405) fixed on both sides. A series rod (406) that moves through the connecting block (405) is vertically fixed inside the cylinder (401). A limit cap (407) is threadedly connected to the top of the series rod (406).

7. The anti-corrosion gas treatment device for a vacuum pump according to claim 6, characterized in that, The top of the connecting block (405) is fixed with a partition rod (408), and the connecting block (405) is provided with a socket (409) that cooperates with the serial rod (406).

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