An oil mist collection tank for a vacuum pump

Abstract

This utility model relates to the field of vacuum pump oil mist collection technology, and discloses an oil mist collection tank for a vacuum pump, including a tank body and an oil mist collection mechanism. The top of the tank body is provided with a removable sealing cover, an air inlet pipe is provided on one side of the tank body, and an exhaust pipe and a drain port are provided at the bottom of the tank body. Gas passes sequentially through the air inlet pipe, the oil mist collection mechanism, and the exhaust pipe. The oil mist collection mechanism is provided with a screw and a ventilation pipe, which are connected to the exhaust pipe. One end of the exhaust pipe inside the tank body is provided with a connector and a support plate. The connector is connected to the inner wall of the exhaust pipe. One end of the screw is screwed to the connector, and the other end is connected to the oil mist collection mechanism. The connector is provided with a hollow part for connecting the air inlet pipe and the exhaust pipe. The support plate is connected to the outer peripheral wall of the exhaust pipe. When the oil mist collection mechanism is fixed to the exhaust pipe by the screw, the bottom of the oil mist collection mechanism overlaps with the support plate. This utility model allows for easy disassembly of the oil mist collection mechanism.

Description

Technical Field

[0001] This utility model relates to the field of oil mist collection technology for vacuum pumps, specifically to an oil mist collection tank for vacuum pumps. Background Technology

[0002] Oil-sealed vacuum pumps and oil-lubricated Roots pumps rely on lubricating oil to seal, cool, and lubricate moving parts during operation. Therefore, these pumps inevitably generate oil mist during operation. If no measures are taken to treat the oil mist, it can lead to problems such as environmental pollution, high energy consumption due to oil mist condensation on the inner wall of the pipeline, and pump overheating and shutdown due to oil carbonization clogging the exhaust valve. Therefore, it is necessary to add an oil mist collector at the exhaust end of the pump to capture the oil mist in the gas, thereby preventing the above problems.

[0003] In the prior art, Chinese patent CN118304712A discloses a vacuum trap. Gas containing oil vapor molecules enters through the inlet of the inlet pipe. The gas molecules bypass two baffles, pass through the mist eliminator, and are discharged from the exhaust pipe. After entering through the inlet pipe, the oil vapor molecules move upward with the gas. Some of the oil vapor molecules condense or reflect on the baffles. When the weight of the accumulated droplets exceeds the upward force of the gas, the droplets separate from the baffles and fall. The oil vapor molecules that are not separated continue to move upward. When passing through the second baffle, some of the oil vapor molecules are separated. This vacuum trap can separate most of the oil mist particles through the baffles, but it is not convenient to disassemble and maintain.

[0004] Therefore, the technical problem to be solved in this case is: how to facilitate the disassembly and maintenance of the oil mist collector. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an oil mist collection tank for a vacuum pump. The oil mist collection tank can be easily installed or removed from the tank body by screwing together a screw and connecting piece, which facilitates the maintenance or replacement of the oil mist collection mechanism by the staff. The oil mist collection mechanism can block the oil mist in the gas on the outer peripheral wall of the ventilation pipe. On the other hand, the hollow part connects the exhaust pipe and the ventilation pipe, so that the gas passing through the oil mist collection mechanism can be discharged to the outside from the exhaust pipe, thereby preventing oil mist from polluting the working environment.

[0006] The technical solution of this utility model is:

[0007] An oil mist collection tank for a vacuum pump includes a tank body and an oil mist collection mechanism. The top of the tank body is provided with a removable sealing cover, an air inlet pipe is provided on one side of the tank body, and an exhaust pipe and a drain port are provided at the bottom of the tank body. Gas passes through the air inlet pipe, the oil mist collection mechanism and the exhaust pipe in sequence. The oil mist collection mechanism is provided with a screw and a ventilation pipe, and the ventilation pipe and the exhaust pipe are connected.

[0008] The exhaust pipe is located inside the tank and has a connector and a support plate at one end. The connector is connected to the inner wall of the exhaust pipe. One end of the screw is screwed to the connector and the other end is connected to the oil mist collection mechanism. The connector has a hollow part for connecting the intake pipe and the exhaust pipe.

[0009] The support plate is connected to the outer peripheral wall of the exhaust pipe. When the oil mist collection mechanism is fixed to the exhaust pipe by a screw, the bottom of the oil mist collection mechanism overlaps with the support plate.

[0010] Preferably, the inlet end of the exhaust pipe protrudes from the top of the support plate.

[0011] Preferably, the connector is a connecting plate with a cross-shaped structure. The connector has a screw hole in the middle, the axis of which coincides with the axis of the exhaust pipe, and the screw is screwed into the screw hole.

[0012] Preferably, the oil mist collection mechanism includes an oil mist collector, an air duct located inside the oil mist collector, a connection hole at the top of the oil mist collector, a threaded hole inside the connection hole, the axis of the connection hole coinciding with the axis of the air duct, a screw screwed into the connection hole, and the bottom of the oil mist collector resting on a support plate, the outer diameter of the support plate being larger than the outer diameter of the oil mist collector.

[0013] Preferably, the oil mist collection mechanism further includes an air filter, with the oil mist collector fixedly connected inside the air filter, and the bottom of the air filter and the bottom of the oil mist collector both overlapping the support plate.

[0014] Preferably, the support plate is provided with a placement groove, and a sealing ring is provided in the placement groove. When the screw is connected to the oil mist collection mechanism and the connector, the oil mist collection mechanism presses the sealing ring.

[0015] Preferably, an observation window is provided on one side of the tank.

[0016] Preferably, a drain valve is provided at the drain outlet.

[0017] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0018] This invention allows for easy installation or removal of the oil mist collection mechanism from the tank via screws and connectors, facilitating maintenance or replacement by staff. The oil mist collection mechanism blocks oil mist from the gas on the outer wall of the ventilation pipe. Furthermore, the perforated portion connects the exhaust pipe and the ventilation pipe, allowing the gas passing through the oil mist collection mechanism to be discharged from the exhaust pipe, thus preventing oil mist from polluting the working environment. Attached Figure Description

[0019] Figure 1 This is a perspective view of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a front view of Embodiment 1 of the present invention;

[0021] Figure 3 This is a cross-sectional view A of Embodiment 1 of the present invention;

[0022] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0023] Figure 5 This is a cross-sectional view B of Embodiment 1 of the present invention;

[0024] Figure 6 This is a cross-sectional view of Embodiment 2 of the present invention;

[0025] Figure 7 for Figure 6 A magnified view of a portion of the image.

[0026] The reference numerals for each of the attached figures are as follows: 1. Tank body; 2. Oil mist collection mechanism; 3. Sealing cover; 11. Air inlet pipe; 12. Exhaust pipe; 13. Drain outlet; 14. Observation window; 21. Screw; 22. Ventilation pipe; 23. Oil mist collector; 24. Air filter; 121. Connector; 122. Support plate; 123. Placement slot; 124. Sealing ring; 1211. Connection hole. Detailed Implementation

[0027] 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.

[0028] Example 1

[0029] It should be noted that the vacuum pump referred to in this embodiment is a vacuum pump that requires the use of oil, such as an oil-sealed vacuum pump, an oil-lubricated Roots pump, or other vacuum pumps that need to treat exhaust oil mist. It should also be noted that the oil mist collection mechanism in this application requires regular maintenance.

[0030] Please see Figure 1-5An oil mist collection tank for a vacuum pump includes a tank body 1 and an oil mist collection mechanism 2. The top of the tank body 1 is equipped with a removable sealing cap 3. An air inlet pipe 11 is located on one side of the tank body 1, and an exhaust pipe 12 and a drain port 13 are located at the bottom of the tank body 1. Gas passes sequentially through the air inlet pipe 11, the oil mist collection mechanism 2, and the exhaust pipe 12. The oil mist collection mechanism 2 is equipped with a screw 21 and a ventilation pipe 22, which are connected to the exhaust pipe 12. One end of the exhaust pipe 12 located inside the tank body 1 is... It has a connector 121 and a support plate 122. The connector 121 is connected to the inner wall of the exhaust pipe 12. One end of the screw 21 is screwed to the connector 121, and the other end is connected to the oil mist collection mechanism 2. The connector 121 has a hollow part for connecting the intake pipe 11 and the exhaust pipe 12. The support plate 122 is connected to the outer peripheral wall of the exhaust pipe 12. When the oil mist collection mechanism 2 is fixed to the exhaust pipe 12 by the screw 21, the bottom of the oil mist collection mechanism 2 overlaps with the support plate 122.

[0031] In practical applications, the oil mist collection mechanism 2 is installed on the connector 121 via the screw 21 and attached to the support plate 122. The air inlet pipe 11 is connected to the exhaust end of an external vacuum pump. When the vacuum pump is working, gas is drawn into the tank 1 from the air inlet pipe 11. The gas then passes through the oil mist collection mechanism 2, where the oil mist contained in the gas is blocked and located on the outer peripheral wall of the ventilation pipe 22. The gas then enters the exhaust pipe 12 through the ventilation pipe 22 and is discharged outward from the exhaust pipe 12, thus completing the oil mist collection work and preventing oil mist pollution of the environment. Oil mist condensation on the inner wall of the pipeline leads to high energy consumption, and oil carbonization blocks the exhaust valve, causing the pump to overheat and shut down. Specifically, in this embodiment, the connection between the screw 21 and the oil mist collection mechanism 2 can be a fixed connection or a screw connection. The screw connection requires a bolt connection, while the fixed connection can be a welding connection. On the other hand, when the screw 21 and the connector 121 are connected, the hollow part allows gas to flow, which is conducive to the exhaust of gas. Moreover, the support plate 122 can provide support for the oil mist collection mechanism 2, so that the oil mist collection mechanism 2 can perform oil mist collection work more stably.

[0032] Preferably, the inlet end of the exhaust pipe 12 protrudes from the top of the support plate 122.

[0033] With the above design, since the oil mist collection mechanism 2 is attached to the top of the support plate 122, the input end of the exhaust pipe 12 protrudes from the top of the support plate 122, which makes the input end of the exhaust pipe 12 located inside the ventilation pipe 22, ensuring that the gas in the ventilation pipe 22 can completely enter the exhaust pipe 12 and be discharged outward.

[0034] Preferably, the connector 121 is a connecting plate with a cross-shaped structure. The connector 121 has a screw hole in the middle, the axis of which coincides with the axis of the exhaust pipe 12, and the screw 21 is screwed into the screw hole.

[0035] In this embodiment, the connector 121 is a cross-shaped connecting plate, and the axis of the screw hole coincides with the axis of the exhaust pipe 12. This makes the oil mist collection mechanism 2 more stable when it is installed in the tank 1 by the screw 21. As a preferred solution of this embodiment, the connector 121 can be a connecting plate of other shapes, such as a cross-shaped connecting plate. It is only necessary to form a hollow part so that the ventilation pipe 22 and the exhaust pipe 12 can be connected.

[0036] Preferably, the oil mist collection mechanism 2 includes an oil mist collector 23, an air duct 22 located inside the oil mist collector 23, a connecting hole 1211 at the top of the oil mist collector 23, a thread in the connecting hole 1211, the axis of the connecting hole 1211 coinciding with the axis of the air duct, a screw 21 screwed into the connecting hole 1211, and the bottom of the oil mist collector 23 resting on a support plate 122, the outer diameter of the support plate 122 being larger than the outer diameter of the oil mist collector 23.

[0037] In the above design, the screw 21 and the oil mist collector 23 are connected by screws. The upper and lower sides of the screw 21 and the connecting hole 1211 are locked with nuts to prevent the oil mist collector 23 from being displaced when the screw 21 rotates, which would cause installation or disassembly failure. In addition, the outer diameter of the support plate 122 is larger than the outer diameter of the oil mist collector 23 to ensure that the oil mist collector 23 can be attached to the support plate 122. In addition to screw connection, the screw 21 and the oil mist collector 23 can also be fixedly connected.

[0038] Preferably, the support plate 122 is provided with a placement groove 123, and a sealing ring 124 is provided in the placement groove 123. When the screw 21 is connected to the oil mist collection mechanism 2 and the connector 121, the oil mist collection mechanism 2 presses the sealing ring 124.

[0039] With the above design, when the oil mist collection mechanism 2 is installed on the exhaust pipe 12 via the screw 21, the sealing ring 124 can prevent gas from entering the oil mist collector 23 from the bottom of the oil mist collection mechanism 2, that is, from entering the ventilation pipe 22, causing the oil mist to be discharged outward through the exhaust pipe 12 without being collected by the oil mist collection mechanism 2. Therefore, the sealing ring 124 can ensure that all gas passes through the oil mist collection mechanism 2 to collect the oil mist. In this embodiment, the bottom of the oil mist collector 23 is pressed against the sealing ring 124, thereby preventing gas from entering the ventilation pipe 22 between the bottom of the oil mist collector 23 and the top of the support plate 122, thus preventing the oil mist from being collected.

[0040] Preferably, an observation window 14 is provided on one side of the tank body 1.

[0041] In this embodiment, the observation window 14 allows staff to easily observe the inside of the tank 1.

[0042] Preferably, a drain valve is provided at the drain outlet 13.

[0043] In this embodiment, the operator can control the opening and closing of the drain valve to control the opening and closing of the drain outlet 13, so as to facilitate the discharge of waste and impurities from the drain outlet 13. It can also be collected by an external collection device. It should be noted that the drain valve is a control valve well known to those skilled in the art, and is not shown in the figure.

[0044] Example 2

[0045] Please refer to Figure 6-7 Preferably, the oil mist collection mechanism 2 further includes an air filter 24, and the oil mist collector 23 is fixedly connected inside the air filter 24. The bottom of the air filter 24 and the bottom of the oil mist collector 23 are both attached to the support plate 122.

[0046] It should be noted that the air filter 24 and the oil mist collector 23 are fixedly connected in a manner known to those skilled in the art, and will not be described in detail here. In this embodiment, the oil mist collector 23 is located inside the air filter 24, which allows the gas to undergo preliminary filtration by passing through the air filter 24 before passing through the oil mist collector 23.

[0047] It should be noted that in this embodiment, the oil mist collection mechanism 2 and the sealing ring 124 are connected by pressing the bottom of the air filter 24 against the sealing ring 124, so as to ensure that the gas can be initially filtered by the air filter 24 before being collected by the oil mist collector 23.

[0048] It should be noted that both the air filter 24 and the oil mist collection mechanism 2 in this embodiment require regular maintenance.

[0049] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An oil mist collection tank for a vacuum pump, comprising a tank body and an oil mist collection mechanism, wherein the top of the tank body is provided with a removable sealing cover, one side of the tank body is provided with an air inlet pipe, and the bottom of the tank body is provided with an exhaust pipe and a drain port, wherein gas passes sequentially through the air inlet pipe, the oil mist collection mechanism, and the exhaust pipe, characterized in that, The oil mist collection mechanism is equipped with a screw and a ventilation pipe, and the ventilation pipe and the exhaust pipe are connected. The exhaust pipe is provided with a connector and a support plate at one end inside the tank. The connector is connected to the inner wall of the exhaust pipe. One end of the screw is screwed to the connector, and the other end is connected to the oil mist collection mechanism. The connector is provided with a hollow part for connecting the air intake pipe and the exhaust pipe. The support plate is connected to the outer peripheral wall of the exhaust pipe. When the oil mist collection mechanism is fixed to the exhaust pipe by the screw, the bottom of the oil mist collection mechanism overlaps with the support plate.

2. The oil mist separating drum of a vacuum pump according to claim 1, characterized in that The inlet end of the exhaust pipe protrudes from the top of the support plate.

3. The oil mist separator of the vacuum pump according to claim 1, characterized in that, The connector is a connecting plate with a cross-shaped structure. A screw hole is provided in the middle of the connector, and the axis of the screw hole coincides with the axis of the exhaust pipe. The screw is screwed into the screw hole.

4. The oil mist separating drum of a vacuum pump according to claim 1, characterized in that The oil mist collection mechanism includes an oil mist collector, an air intake pipe located inside the oil mist collector, a connecting hole at the top of the oil mist collector, a threaded hole inside the connecting hole, the axis of the connecting hole coinciding with the axis of the air intake pipe, a screw screwed into the connecting hole, and the bottom of the oil mist collector resting on a support plate, the outer diameter of the support plate being larger than the outer diameter of the oil mist collector.

5. The oil mist separator of a vacuum pump according to claim 4, characterized in that The oil mist collection mechanism also includes an air filter, and the oil mist collector is fixedly connected inside the air filter. The bottom of the air filter and the bottom of the oil mist collector both overlap the support plate.

6. The oil mist separator of the vacuum pump according to claim 1, characterized in that, The support plate is provided with a placement groove, and a sealing ring is provided in the placement groove. When the screw is connected to the oil mist collection mechanism and the connector, the oil mist collection mechanism presses the sealing ring.

7. The oil mist separator of the vacuum pump according to claim 1, characterized in that, An observation window is provided on one side of the tank.

8. The oil mist separator of the vacuum pump according to claim 1, characterized in that, A drain valve is installed at the drain outlet.

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