A high vacuum pump set for hazardous gases

Abstract

This utility model discloses a high-vacuum pump unit for hazardous gases, relating to the field of vacuum pump unit technology. The utility model includes: a support plate, on one side of which a vacuum pump unit body is mounted; a water storage tank containing neutralizing liquid, a drain pipe on the bottom front side of the water storage tank, an mounting cylinder connected to the upper part of the water storage tank near the vacuum pump unit body, and a guide pipe connecting the bottom of the mounting cylinder away from the water storage tank to the vacuum pump unit body. This utility model, through the coordinated operation of the water storage tank, water-cooling components, and mounting cylinder, provides one-stop pretreatment of hazardous gases. By neutralizing high-temperature acidic gases, it avoids corrosion of the internal metal materials of the vacuum pump unit. Simultaneously, the cooling function lowers the gas temperature, preventing high temperatures from reducing the viscosity of the lubricating oil inside the pump unit, improving lubrication, and reducing wear on mechanical parts.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump assembly technology, specifically to a high vacuum pump assembly for hazardous gases. Background Technology

[0002] High-vacuum pump sets are key equipment for handling hazardous gases in many fields such as chemical production, environmental monitoring, and scientific research. With the expansion of industrial production scale and the increasing requirements for environmental safety, the demand for handling complex hazardous gases such as high-temperature and acidic gases is growing.

[0003] However, traditional high-vacuum pump sets generally lack effective pretreatment devices for hazardous gases. In practical applications, high-temperature acidic gases enter the vacuum pump set directly without any treatment. High temperatures cause the viscosity of the lubricating oil inside the pump set to decrease, resulting in poor lubrication and accelerated wear of mechanical parts; acidic gases will also react chemically with the pump body's metal materials, causing severe corrosion, especially for critical components such as pump bodies, impellers, and seals made of ordinary metal materials. Furthermore, the combined effects of high temperature and acidic environment significantly shorten the service life of the vacuum pump set and substantially increase equipment maintenance costs. Therefore, we propose a high-vacuum pump set for hazardous gases to address these problems. Utility Model Content

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A high-vacuum pump assembly for hazardous gases includes:

[0006] A support plate, on one side of which a vacuum pump assembly body is mounted;

[0007] A water storage tank is provided with a neutralizing liquid inside. A drain pipe is provided on the bottom side of the front of the water storage tank. An installation cylinder is connected to the upper part of the side of the water storage tank near the vacuum pump unit body. A guide pipe is connected between the bottom of the side of the installation cylinder away from the water storage tank and the vacuum pump unit body.

[0008] A feed pipe is located at the top center of the water storage tank, and a pipe cap is threaded to the upper end of the feed pipe;

[0009] An air inlet pipe is fixedly inserted into the middle of the side wall of the water storage tank. One end of the air inlet pipe inside the water storage tank is connected to an annular pipe, and the surface of the annular pipe is connected to an air outlet pipe at equal intervals.

[0010] Water-cooled components are used to cool the neutralizing liquid.

[0011] Furthermore, the water-cooling assembly includes a water inlet pipe fixedly embedded in the top of the water storage tank, the water inlet pipe being connected to a cold water delivery device, one end of the water inlet pipe located inside the water storage tank being connected to a heat exchange pipe, a drain pipe being fixedly embedded in the bottom side of the water storage tank wall, and the end of the heat exchange pipe away from the water inlet pipe being connected to the drain pipe.

[0012] Furthermore, the heat exchange tube is spiral-shaped.

[0013] Furthermore, a one-way valve is installed on the body of the air intake pipe, and the air outlet pipe has its opening facing downwards.

[0014] Furthermore, an activated carbon rod is slidably inserted inside the mounting cylinder, and a cylinder cap is threadedly connected to the end of the mounting cylinder away from the water storage cylinder.

[0015] Furthermore, the feed pipe is rotatably connected to the top of the water storage tank via a bearing, and stirring blades are fixed at equal intervals on the bottom side of the feed pipe. A driving component is provided on the top side of the water storage tank, and the driving component is used to drive the feed pipe to rotate.

[0016] Furthermore, the driving component includes a drive motor installed on the top side of the water storage tank, the output shaft of the drive motor is connected to a driving bevel gear, and a driven bevel gear is fixedly sleeved on the wall of the feed pipe, with the driving bevel gear meshing with the driven bevel gear.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention integrates multiple pretreatment functions such as neutralization, cooling, and drying into one unit, changing the traditional high-vacuum pump set's lack of effective pretreatment. Through the coordinated work of structures such as the water storage tank, water-cooling components, and mounting cylinder, it performs one-stop pretreatment of hazardous gases. By neutralizing high-temperature acidic gases, it avoids corrosion of key components such as the pump body, impeller, and seals inside the vacuum pump set. At the same time, the cooling function reduces the gas temperature, preventing the high temperature from reducing the viscosity of the lubricating oil inside the pump set, improving the lubrication effect, and reducing the wear of mechanical parts. Under the combined effect, it greatly extends the service life of the vacuum pump set and reduces the frequency of equipment replacement and maintenance. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is another three-dimensional structural schematic diagram of this utility model;

[0021] Figure 3 This is a top view of the present invention;

[0022] Figure 4 This is a utility model Figure 3 Schematic diagram of cross-section along the AA direction.

[0023] Reference numerals in the attached drawings: 1. Support plate; 2. Vacuum pump unit body; 201. Guide pipe; 3. Water storage tank; 4. Sewage pipe; 5. Mounting cylinder; 501. Cylinder cover; 6. Feed pipe; 601. Pipe cover; 7. Annular pipe; 8. Air outlet pipe; 9. Water cooling assembly; 901. Water inlet pipe; 902. Heat exchange pipe; 903. Drain pipe; 10. Air inlet pipe; 11. Stirring blades; 12. Drive component; 1201. Drive motor; 1202. Driving bevel gear; 1203. Driven bevel gear; 13. Activated carbon rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0025] This application provides a high-vacuum pump unit for hazardous gases, mainly to solve the problem of the lack of effective pretreatment devices for hazardous gases in the prior art, and provides the following technical solution, which will be combined with... Figures 1-4 Please provide a detailed explanation:

[0026] A high-vacuum pump assembly for hazardous gases includes:

[0027] Support plate 1, and vacuum pump assembly body 2 is installed on one side of support plate 1;

[0028] The water storage tank 3 is filled with neutralizing liquid. A drain pipe 4 is provided on the bottom side of the front of the water storage tank 3. An installation cylinder 5 is connected to the upper side of the side of the water storage tank 3 closest to the vacuum pump unit body 2. An activated carbon rod is slidably inserted inside the installation cylinder 5. A cylinder cover 501 is threaded to the end of the installation cylinder 5 away from the water storage tank 3. A guide pipe 201 is connected between the bottom side of the installation cylinder 5 away from the water storage tank 3 and the vacuum pump unit body 2.

[0029] The feed pipe 6 is located at the top center of the water storage tank 3, and the upper end of the feed pipe 6 is threadedly connected to the pipe cap 601;

[0030] An air inlet pipe 10 is fixedly inserted in the middle of the side wall of the water storage tank 3. One end of the air inlet pipe 10 located inside the water storage tank 3 is connected to an annular pipe 7. An air outlet pipe 8 is connected at equal intervals on the surface of the annular pipe 7.

[0031] The water-cooling assembly 9 is used to cool the neutralizing liquid. The water-cooling assembly 9 includes a water inlet pipe 901 fixedly embedded in the top of the water storage tank 3. The water inlet pipe 901 is connected to a cold water delivery device. One end of the water inlet pipe 901 located inside the water storage tank 3 is connected to a heat exchange pipe 902. A drain pipe 903 is fixedly embedded in the bottom side of the tank wall of the water storage tank 3. The end of the heat exchange pipe 902 away from the water inlet pipe 901 is connected to the drain pipe 903.

[0032] Workflow Description

[0033] Step 1, gas introduction:

[0034] Hazardous gases, such as high-temperature acidic gases, enter the equipment through the inlet pipe 10. After entering the inlet pipe 10, the gas flows into the annular pipe 7 located inside the water storage tank 3, and then is evenly discharged into the neutralization liquid inside the water storage tank 3 through the outlet pipes 8 that are evenly spaced on the surface of the annular pipe 7.

[0035] The second step, neutralization and cooling:

[0036] The high-temperature acidic gas discharged into the neutralizing liquid undergoes a neutralization reaction with the neutralizing liquid. The neutralizing liquid can neutralize the acidic components in the acidic gas and reduce the acidity of the gas. At the same time, the water cooling component 9 starts to work. The inlet pipe 901 of the external cold water delivery device introduces cold water. The cold water flows in the water storage tank 3 through the heat exchange pipe 902. After absorbing the heat of the neutralizing liquid in the heat exchange pipe 902, the cold water is discharged through the drain pipe 903, thereby achieving continuous cooling of the neutralizing liquid and thus reducing the temperature of the high-temperature gas.

[0037] Step 3, gas drying:

[0038] After neutralization and cooling, the gas flows to the mounting cylinder 5, which is connected to the water storage cylinder 3. Activated carbon rods are slidably inserted inside the mounting cylinder 5. The activated carbon rods have strong adsorption properties and can adsorb moisture in the gas, thus drying the gas and ensuring that the gas entering the vacuum pump unit 2 is relatively dry, reducing the impact of moisture on the internal components of the vacuum pump unit.

[0039] The fourth step is to deliver the gas to the vacuum pump unit:

[0040] The dried gas enters the vacuum pump unit 2 smoothly through the guide pipe 201 between the mounting cylinder 5 and the vacuum pump unit 2. The vacuum pump unit 2 then performs subsequent pumping, compression and other processing on the gas.

[0041] Step 5: Adding neutralizing solution and cleaning up:

[0042] When the neutralizing liquid needs to be replaced or cleaned, the drain pipe 4 on the bottom front of the water tank 3 can be opened to discharge the used neutralizing liquid. In addition, new neutralizing liquid can be added to the water tank 3 through the feed pipe 6. The upper end of the feed pipe 6 is threaded with a pipe cap 601 to prevent foreign matter from entering when no neutralizing liquid is added.

[0043] This device innovatively integrates multiple pretreatment functions such as neutralization, cooling, and drying into one unit, changing the traditional high-vacuum pump set's lack of effective pretreatment. Through the coordinated work of structures such as the water storage tank 3, water cooling component 9, and mounting cylinder 5, it performs one-stop pretreatment of hazardous gases. By neutralizing high-temperature acidic gases, it avoids corrosion of key components such as the pump body, impeller, and seals inside the vacuum pump set. At the same time, the cooling function reduces the gas temperature, preventing the high temperature from reducing the viscosity of the lubricating oil inside the pump set, improving the lubrication effect, and reducing the wear of mechanical parts. Under the combined effect, it greatly extends the service life of the vacuum pump set and reduces the frequency of equipment replacement and maintenance.

[0044] like Figure 4 As shown, in some embodiments, the heat exchange tube 902 is spiral-shaped. More specifically, the biggest advantage of the spiral heat exchange tube 902 compared to the traditional straight tube is that it greatly expands the heat exchange area. When the traditional straight tube is arranged in the water storage tank 3, the contact surface area with the neutralizing liquid is limited. However, the spiral heat exchange tube 902 is like a three-dimensional coil of a straight tube. In the same space, its contact surface area with the neutralizing liquid is significantly increased. In addition, the spiral structure makes the flow path of cold water in the heat exchange tube 902 longer. When cold water flows into the heat exchange tube 902 from the inlet pipe 901, due to the existence of the spiral path, its residence time in the water storage tank 3 is greatly increased. Compared with the case where cold water flows quickly in the straight tube, the cold water in the spiral heat exchange tube 902 can maintain a longer contact with the neutralizing liquid. In this process, the heat in the neutralizing liquid can be more fully transferred to the cold water, achieving more efficient heat exchange.

[0045] like Figure 4As shown, in some embodiments, a one-way valve is installed on the body of the inlet pipe 10, and the outlet pipe 8 is set downwards. More specifically, the core function of the one-way valve is to realize the one-way flow of gas. When the equipment is in normal operation, the dangerous gas can smoothly push open the one-way valve under the action of external pressure and enter the annular pipe 7 and subsequent processing stages through the inlet pipe 10. When the equipment stops running, or when the pressure in the system fluctuates abnormally, causing the gas to be unable to flow normally, the one-way valve will automatically close, forming a reliable barrier to prevent the neutralizing liquid in the water tank 3 from flowing back up along the inlet pipe 10. Without the one-way valve, if the neutralizing liquid flows into the inlet pipe 10 when the equipment stops or the negative pressure is insufficient, it will not only block the pipe but also affect the gas delivery when the equipment is started up. Furthermore, the contact between the neutralizing liquid and the external connecting parts of the inlet pipe 10 may cause corrosion and other problems, seriously threatening the safe and stable operation of the entire equipment system. The downward-facing opening of the outlet pipe 8 ensures that the high-temperature acidic gas, after being discharged from the annular pipe 7, must first sink to the bottom of the neutralizing liquid and then slowly rise to the surface. Compared to the horizontal or upward-facing design of the outlet pipe 8, this method greatly extends the flow path and residence time of the gas in the neutralizing liquid. During the longer residence time, the gas has more time to fully contact the neutralizing liquid, thus allowing the acid-base neutralization reaction to proceed more fully. For example, under other opening designs, the gas may only briefly contact the neutralizing liquid before being discharged, and some acidic components may not have time to react; however, with the downward-facing opening, the gas's "immersion" time in the neutralizing liquid increases, allowing more acidic substances in the acidic gas to react with the alkaline components in the neutralizing liquid, significantly improving the neutralization effect and effectively reducing the acidity of the gas.

[0046] like Figure 2As shown, in some embodiments, the feed pipe 6 is rotatably connected to the top of the water storage tank 3 via bearings. Stirring blades 11 are fixedly mounted at equal intervals on the bottom side of the feed pipe 6. A driving component 12 is provided on the top side of the water storage tank 3. The driving component 12 is used to drive the feed pipe 6 to rotate. The driving component 12 includes a drive motor 1201 mounted on the top side of the water storage tank 3. The output shaft of the drive motor 1201 is connected to a driving bevel gear 1202. A driven bevel gear 1203 is fixedly sleeved on the wall of the feed pipe 6. The driving bevel gear 1202 and... The driven bevel gear 1203 meshes with the feed pipe 6. More specifically, stirring blades 11 are fixed at equal intervals on the bottom side of the feed pipe 6. These stirring blades 11 are like "paddles in water". Their equal spacing can form a uniform and comprehensive agitation of the neutralized liquid in the water storage tank 3 when the feed pipe 6 rotates. The stirring blades 11 at different positions work together to ensure that all areas of the neutralized liquid are agitated, avoiding insufficient mixing in some areas. This creates good conditions for the neutralized liquid to fully react with the hazardous gas. The driving component 12 is driven by the drive unit. The system consists of a drive motor 1201, a drive bevel gear 1202, and a driven bevel gear 1203. When the drive motor 1201 is working, its output shaft drives the drive bevel gear 1202 to rotate. Since the drive bevel gear 1202 meshes with the driven bevel gear 1203, the rotational motion of the drive bevel gear 1202 is transmitted to the driven bevel gear 1203, which in turn drives the feed pipe 6, which is fixedly sleeved on the driven bevel gear 1203, to rotate. As the feed pipe 6 rotates, the stirring blades 11 at its bottom also begin to rotate synchronously, thus affecting the water storage tank. When adding new neutralizing liquid, the newly added neutralizing liquid can be quickly and evenly mixed with the original neutralizing liquid under the action of the stirring blade 11. During the use of the neutralizing liquid, the stirring blade 11 continuously stirs, which can keep the neutralizing liquid in a uniform state and ensure that it fully contacts the dangerous gas entering the water storage tank 3 and undergoes a neutralization reaction. When stirring is not required, the drive motor 1201 is turned off, the active bevel gear 1202 stops rotating, and the feed pipe 6 and the stirring blade 11 also stop moving.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high vacuum pump set for hazardous gases, characterized in that, include: A support plate (1) is provided, and a vacuum pump assembly body (2) is installed on one side of the support plate (1). A water storage tank (3) is filled with neutralizing liquid. A drain pipe (4) is provided on the bottom side of the front of the water storage tank (3). An installation cylinder (5) is connected to the upper side of the water storage tank (3) near the vacuum pump group body (2). A guide pipe (201) is connected between the bottom side of the installation cylinder (5) away from the water storage tank (3) and the vacuum pump group body (2). The feed pipe (6) is located in the middle of the top of the water storage tank (3), and the upper end of the feed pipe (6) is threaded with a pipe cap (601). An air inlet pipe (10) is fixedly inserted in the middle of the side wall of the water storage tank (3). One end of the air inlet pipe (10) inside the water storage tank (3) is connected to an annular pipe (7). An air outlet pipe (8) is connected to the surface of the annular pipe (7) at equal intervals. Water-cooled assembly (9) is used to cool the neutralizing liquid.

2. A high vacuum pump set for hazardous gases according to claim 1, characterized in that, The water-cooling assembly (9) includes an inlet pipe (901) fixedly embedded in the top of the water storage tank (3). The inlet pipe (901) is connected to a cold water delivery device. One end of the inlet pipe (901) located inside the water storage tank (3) is connected to a heat exchange pipe (902). A drain pipe (903) is fixedly embedded on the bottom side of the tank wall of the water storage tank (3). The end of the heat exchange pipe (902) away from the inlet pipe (901) is connected to the drain pipe (903).

3. A high vacuum pump set for hazardous gases according to claim 2, characterized in that, The heat exchange tube (902) is spiral-shaped.

4. A high vacuum pump set for hazardous gases according to claim 1, characterized in that, A one-way valve is installed on the body of the air inlet pipe (10), and the air outlet pipe (8) is set with its opening facing downward.

5. A high vacuum pump set for hazardous gases according to claim 1, characterized in that, An activated carbon rod (13) is slidably inserted inside the mounting cylinder (5), and a cylinder cover (501) is threadedly connected to the end of the mounting cylinder (5) away from the water storage cylinder (3).

6. A high vacuum pump set for hazardous gases according to claim 1, characterized in that, The feed pipe (6) is rotatably connected to the top of the water storage tank (3) via a bearing. Stirring blades (11) are fixed at equal intervals on the bottom side of the feed pipe (6). A driving component (12) is provided on the top side of the water storage tank (3). The driving component (12) is used to drive the feed pipe (6) to rotate.

7. A high vacuum pump set for hazardous gases according to claim 6, characterized in that The drive unit (12) includes a drive motor (1201) installed on the top side of the water storage tank (3). The output shaft of the drive motor (1201) is connected to a drive bevel gear (1202). The wall of the feed pipe (6) is fixedly fitted with a driven bevel gear (1203). The drive bevel gear (1202) meshes with the driven bevel gear (1203).

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