CN218376796U

CN218376796U - Oil mist exhaust device for vacuum pump

Info

Publication number: CN218376796U
Application number: CN202222436834.XU
Authority: CN
Inventors: 王横; 王纵; 王德胜
Original assignee: Jinhua Weike Industrial & Trading Co ltd
Current assignee: Jinhua Weike Industrial & Trading Co ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-01-24
Anticipated expiration: 2032-09-14

Abstract

The utility model relates to the field of vacuum pumps, in particular to an oil mist exhaust device for a vacuum pump, which is used for connecting a pump body oil chamber to be assembled and comprises an oil mist chamber and an oil storage chamber, wherein the bottom of the oil storage chamber is provided with a flow guide part which is positioned at the inlet end of the oil mist chamber; the flow guide part is provided with a first flow guide hole and a second flow guide channel, an outlet of the second flow guide channel is provided with an oil outlet and is positioned in the first flow guide hole, the oil outlet is provided with a plug, the plug comprises a plug part and a limiting claw, the flow guide part is provided with a boss, and the limiting claw is buckled on the boss and is movably connected with the boss; when the vacuum pump works, gas enters the first flow guide hole and pushes the plug to plug the oil outlet, the gas enters the oil mist chamber through the first flow guide hole, and the gas enters the oil storage chamber after being filtered by the filter cartridge and is discharged; when the vacuum pump stops working, the plug descends and opens the oil outlet under the action of gravity, and the liquefied oil in the oil storage chamber flows back to the pump body oil chamber through the second diversion channel.

Description

Oil mist exhaust device for vacuum pump

Technical Field

The utility model relates to a vacuum pump field refers in particular to an oil mist exhaust apparatus for vacuum pump.

Background

In the actual use process of the existing vacuum pump, oil in equipment can be vaporized due to the rise of the temperature of the machine, and in order to avoid pollution, an exhaust device is usually installed at an exhaust port to filter oil mist.

The utility model discloses a utility model patent with publication number CN210152853U, the name is a vacuum pump exhaust cover, it discloses including enclosing cover, inner tube, be equipped with exhaust passage between the inside wall of the lateral wall of inner tube and enclosing cover, the inner tube bottom is equipped with the through-hole, the inner tube inner chamber is equipped with strains a section of thick bamboo, strain and be equipped with the stock solution chamber between the section of thick bamboo and the inner tube, strain a section of thick bamboo front end and be equipped with the protecgulum, strain the tail end of a section of thick bamboo and be equipped with the tail cover, fixedly connected with connecting portion on the protecgulum, the lateral wall and the through-hole inner wall sealing connection of this connecting portion, the outer end of this connecting portion is equipped with the first connecting hole that communicates with straining an inner chamber bottom, the second connecting hole that communicates with stock solution chamber bottom, is equipped with the ball plug in the second connecting hole; when the liquid storage device works, the gas rushes into the second connecting hole to jack the blocking ball upwards to block the second connecting hole communicated with the bottom of the liquid storage cavity; when the engine is stopped, the blocking ball falls down, and oil in the liquid storage cavity enters the exhaust port and flows into the pump body.

However, in the existing structure, the blocking ball is arranged in the second connecting hole, the second connecting hole is smaller, and the second connecting hole is used for discharging oil and is not used for air intake, so that in the working process, the gas rushing into the second connecting hole is not much, the betting ball is difficult to jack upwards, and the oil mist filtering effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the defects of the background art are overcome, and the oil mist exhaust device for the vacuum pump, which has a better oil mist filtering effect, is provided.

The technical scheme of the utility model is that:

an oil mist exhaust device for a vacuum pump is used for being connected with an oil chamber of a pump body to be assembled and comprises an oil mist chamber and an oil storage chamber, wherein the bottom of the oil storage chamber is provided with a flow guide component, and the flow guide component is positioned at the inlet end of the oil mist chamber; the flow guide part is provided with a first flow guide hole and a second flow guide channel, and an oil return port of the second flow guide channel is provided with a boss and is positioned in the first flow guide hole; the guide component is provided with a boss, and the limiting claw is buckled on the boss and is movably connected with the boss; when the vacuum pump works, gas enters the first flow guide hole and pushes the plug to block the oil return port, the gas enters the oil mist cavity through the first flow guide hole, and the gas enters the oil storage cavity after being filtered by the filter cartridge and is discharged; when the vacuum pump stops working, the plug descends and opens the oil return port under the action of gravity, and the liquefied oil in the oil storage cavity flows back to the pump body oil chamber through the second diversion channel.

According to one embodiment of the present invention, the flow guide member is provided with a transverse duct portion and a longitudinal duct portion, and the transverse duct portion is communicated with the longitudinal duct portion; the oil return port is arranged at the lower port of the longitudinal pipeline part, the longitudinal pipeline part is arranged at the center of the first flow guide hole, and the boss is arranged at the lower end of the longitudinal pipeline part.

According to an embodiment of the utility model, the second flow guide channel comprises a horizontal section channel, a longitudinal section channel, an oil inlet and an oil return port, the oil inlet is arranged on the side wall of the oil storage cavity and respectively positioned at two ends of the horizontal section channel, and the oil return port is positioned at the bottom of the longitudinal section channel; the horizontal section channel is partially positioned in the transverse pipeline part, and the longitudinal section channel is positioned in the longitudinal pipeline part.

In an embodiment of the present invention, the plug portion is a sphere.

In an embodiment of the present invention, the plug portion is a circular truncated cone.

An embodiment of the utility model, the bottom of end cap is equipped with a balancing weight, the bottom of end cap is equipped with a tongs, and this balancing weight is located in this tongs.

According to an embodiment of the present invention, the outer side wall of the longitudinal pipe portion is provided with a longitudinal groove, and the end of the limiting claw can move longitudinally in the longitudinal groove.

An embodiment of the fundamental utility model, still include dustcoat and inner tube, the exhaust lid supports and leans on the upper end of inner tube, is equipped with in the inner tube and strains a section of thick bamboo, and sealed pot head is established in the upper end of straining a section of thick bamboo, and sealed lid is connected with a section of thick bamboo fastening, and sealed lid is connected with the exhaust lid fastening, and the lower pot head of straining a section of thick bamboo is equipped with the water conservancy diversion part, and the lower extreme and the water conservancy diversion part sealing connection of inner tube, the water conservancy diversion part, strain a section of thick bamboo and sealed lid formation the oil mist cavity, the water conservancy diversion part, strain a section of thick bamboo, inner tube and exhaust lid and form the oil storage cavity, the exhaust lid is flexible material.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. contrast prior art, the utility model discloses an oil mist exhaust apparatus for vacuum pump, including oil mist cavity and oil storage cavity, oil mist cavity's entrance point is equipped with water conservancy diversion part and end cap, and the water conservancy diversion part is equipped with first water conservancy diversion hole and second water conservancy diversion passageway, and the oil return opening of second water conservancy diversion passageway is located first water conservancy diversion downthehole, and the end cap passes through spacing claw swing joint on the boss of water conservancy diversion part, and in operation, this kind sets up the end cap and locates the downthehole mode of first water conservancy diversion, and the oil return opening is plugged up with the upwards jack-up of head of playing more easily when gaseous through first water conservancy diversion hole.

2. Furthermore, the transverse pipeline part and the longitudinal pipeline part are arranged in the first flow guide hole, the oil return port is arranged at the lower port of the longitudinal pipeline part, and the longitudinal pipeline part is arranged at the central position of the first flow guide hole (320), so that the plug is arranged at the central position in the first flow guide hole, and the oil mist and the gas are more concentrated and smooth when ascending, so that the oil mist is more easily pushed against the plug to ascend when ascending, and the oil return port of the second flow guide channel is blocked.

3. Furthermore, the oil inlet is arranged at the bottom of the oil storage cavity and is respectively positioned at two ends of the horizontal section channel, and when the oil storage cavity does not work, oil liquid is easier to flow into the second flow guide channel to enter the oil pumping chamber.

4. Furthermore, the plug part is a ball, and when the plug head rises, the plug part and the outlet of the second flow guide channel are more tightly sealed.

5. Furthermore, the plug part is a circular truncated cone, when the plug head rises, the circular truncated cone-shaped plug part extends into the second flow guide channel, and the sealing effect is better.

6. Furthermore, the bottom of end cap is equipped with a balancing weight, and the end cap can be inhaled to the oiliness in the second water conservancy diversion passageway, and when out of work, it can't descend to avoid the end cap, avoids fluid to block up all the time in the second water conservancy diversion passageway.

Drawings

Fig. 1 is a schematic structural diagram of a vacuum pump according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of fig. 1.

Fig. 3 is an exploded view of an oil mist exhauster for a vacuum pump according to an embodiment of the present invention.

Fig. 4 is an exploded view of an oil mist exhauster for a vacuum pump according to an embodiment of the present invention.

Fig. 5 is a sectional view of an oil mist exhaust device for a vacuum pump according to an embodiment of the present invention.

Fig. 6 is a cross-sectional view of the flow guide member and the plug in an embodiment of the invention.

Fig. 7 is a schematic view of a plug according to an embodiment of the present invention.

Fig. 8 is a schematic view of a flow guide member according to an embodiment of the present invention.

Fig. 9 is a partial cross-sectional view of an oil mist exhaust apparatus for a vacuum pump according to an embodiment of the present invention.

Fig. 10 is a schematic view of another plug according to an embodiment of the present invention.

Fig. 11 is a partial cross-sectional view of an oil mist exhaust device for a vacuum pump according to an embodiment of the present invention.

Fig. 12 is a cross-sectional view of a flow guide member in an embodiment of the invention.

Description of the symbols:

an oil mist exhaust device-1; a pump oil chamber-2; an oil mist chamber-1000; oil storage chamber-2000; inner cylinder-100; plug-200; a flow guide member-300; a filter cartridge-400; sealing cover-500; an exhaust cover-600; a housing-700; a plug portion-210; and a spacing claw-220; a counterweight-230; a gripper-240; a convex ring-310; a first flow guide hole-320; a second flow guide passage-330; horizontal segment channel-331; longitudinal segment channel-332; an oil inlet-333; oil return port-334; a transverse conduit portion-341; and a longitudinal conduit portion-432; a boss-343; longitudinal grooves-344.

Detailed Description

The foregoing and other technical contents, features and effects of the present invention will be apparent from the following detailed description of preferred embodiments and examples of the present invention, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front, rear, inner or outer, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.

The invention will be further described in the following with reference to the accompanying drawings in which:

Fig. 2 is a cross-sectional view of fig. 1.

Fig. 5 is a sectional view of an oil mist exhaust apparatus for a vacuum pump according to an embodiment of the present invention.

It should be noted that the term "fixed" in the present invention means that the relative position between two objects is not changed when the device is used; but not to say, the two can not be disassembled when not in use.

Referring to fig. 1 and 2, a large amount of oil is arranged in the pump body oil chamber 2, the pump body 4 is arranged in the pump body oil chamber 2, when the pump body 4 works, the oil in the equipment can be vaporized due to the rise of the temperature in the pump body oil chamber 2, and in order to avoid pollution, the oil mist exhaust device 1 is arranged at the upper port of the pump body oil chamber 2 and used for exhausting expanded gas and filtering oil mist, so that the pollution waste is avoided.

Example 1

Referring to fig. 3 to 5, the oil mist exhaust apparatus for a vacuum pump according to the present embodiment includes an oil mist chamber 1000, an oil storage chamber 2000, an inner cylinder 100, a plug 200, a flow guide member 300, a filter cartridge 400, a sealing cover 500, an exhaust cover 600, and an outer cover 700; the exhaust cover 600 abuts against the upper end of the inner cylinder 100, the filter cylinder 400 is arranged in the inner cylinder, the sealing cover 500 is sleeved at the upper end of the filter cylinder 400, the sealing cover 500 is tightly connected with the exhaust cover 600, the lower end of the filter cylinder 400 is sleeved with the flow guide part 300, the lower end of the inner cylinder 100 is tightly connected with the flow guide part 300, the filter cylinder 400 and the sealing cover 500 form an oil mist chamber 1000, and the flow guide part 300, the filter cylinder 400, the inner cylinder 100 and the exhaust cover 600 form an oil storage chamber 2000; the exhaust cover 600 is a flexible material.

The inlet end of the oil mist chamber 1000 is provided with a flow guide component 300, the lower port of the flow guide component 300 is provided with a convex ring 310, and the convex ring 310 is provided with external threads and is used for connecting a pump body oil chamber 2 to be assembled; the flow guide member 300 is provided with a first flow guide hole 320 and a second flow guide passage 330, and oil mist enters the oil mist chamber 1000 through the first flow guide hole 320; the oil mist enters the oil storage chamber 2000 after being filtered, and the liquefied oil in the oil storage chamber 2000 returns to the lower port through the second flow guide channel 330; the outlet of the second flow guide channel 330 is externally provided with a plug 200, the plug 200 comprises a plug portion 210 and a limiting claw 220, the flow guide component 300 is provided with a boss 343, and the limiting claw 320 is buckled on the boss 343 and movably connected with the boss 343.

The exhaust cover 600 is a soft deformable member, such as rubber.

Referring to fig. 1 to 12, when the vacuum pump operates, gas enters the first flow guide hole 320 and pushes the plug 200 to block the oil return port 334, the gas enters the oil mist chamber 1000 through the first flow guide hole 320, and the gas enters the oil storage chamber 2000 after being filtered by the filter cartridge 400 and is discharged; when the vacuum pump stops working, under the action of gravity, the plug 200 descends and opens the oil return port 334, and the liquefied oil in the oil storage chamber 2000 flows back to the pump body oil chamber 2 through the second diversion channel 330; when the air pressure in the oil storage chamber 2000 is too high, the outer edge of the exhaust cover 600 may be deformed to be raised, so that the air may overflow.

Referring to fig. 6 and 8, the flow guide member 300 is provided with a transverse conduit portion 341 and a longitudinal conduit portion 432, and the transverse conduit portion 341 and the longitudinal conduit portion 432 are connected; the second diversion channel 330 is communicated with the transverse pipeline part 341 and the longitudinal pipeline part 432, the transverse pipeline part 341 and the longitudinal pipeline part 432 are arranged in the first diversion hole 320 and are positioned at the center of the first diversion hole 320, the boss 343 is arranged at the outer side of the transverse pipeline part 341, that is, the outlet of the second diversion channel 330 is positioned in the first diversion hole 320, the plug 200 is arranged in the first diversion hole 320 and is movably clamped on the boss 343; during exhausting, the gas containing oil mist flows through the first guiding hole 320 intensively, and the gas pushes the plug to move, and the gas rises against the plug to block the outlet of the second guiding channel 330, so that normal oil mist filtering is performed.

After the exhaust is stopped, the plug moves downwards under the action of gravity, the plug part can be separated from the oil return opening, and the liquefied oil can flow back into the pump body oil chamber 2 through the second flow guide channel 330.

Fig. 9 is a partial cross-sectional view of an oil mist exhaust device for a vacuum pump according to an embodiment of the present invention.

Fig. 12 is a cross-sectional view of a flow directing feature in an embodiment of the invention.

Referring to fig. 9 and 12, the second flow guiding passage 330 includes a horizontal passage 331, a longitudinal passage 332, an oil inlet 333 and an oil return port 334, the oil inlet 333 is disposed at the bottom of the oil storage cavity 2000 and is respectively located at two ends of the horizontal passage 331, and the oil return port 334 is located at the bottom of the longitudinal passage 334; the horizontal passage 331 is partially located in the horizontal pipe 341, and the longitudinal passage 332 is located in the longitudinal pipe 432, so that when the device does not work, oil is collected at the bottom of the oil storage chamber 2000, and the oil can more easily flow into the second diversion passage and enter the oil pumping chamber.

Referring to fig. 6 and 7, the plug portion 210 of the plug 200 is a sphere made of a metal material, the two limiting claws 220 are symmetrically arranged, the plug portion 210 of the sphere is arranged between the two limiting claws 220, a platform is arranged between the limiting claws 220, and the plug portion 210 of the sphere is embedded in the platform and partially protrudes out of the platform; the limiting claws 220 and the platform are integrally formed. Further, the platform is a circular platform. The present invention is only illustrated by way of example, and not by way of limitation.

Example 2

Different from embodiment 1, referring to fig. 9 to 11, the plug portion 210 is a circular truncated cone, the upper end is small, the lower end is large, the circular truncated cone is plugged into the second flow guiding channel at any time, and when the plug rises, the thick portion of the circular truncated cone seals the oil return opening 334, so that the sealing effect is better.

Further, a weight 230 is disposed at the bottom of the plug 200, a grip 240 is disposed at the bottom of the plug 200, and the weight 230 is disposed in the grip 240. Because oil has great viscidity, the end cap can be held to the interior oil of second water conservancy diversion passageway, when out of work, avoids the unable accuracy decline of end cap, avoids fluid to block up in the second water conservancy diversion passageway all the time.

The outer side wall of the longitudinal pipe section 432 is provided with a longitudinal groove 344, and the end of the limiting claw 220 can move longitudinally in the longitudinal groove 344.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical implementation of the present invention in any way, and the scope of the present invention is not limited thereby, and any person skilled in the art can make some changes or modifications without departing from the scope of the technical means disclosed in the present invention, and still should be regarded as the same technical or embodiment as the present invention, so that: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. An oil mist exhaust device for a vacuum pump, which is used for connecting a pump body oil chamber (2) to be assembled and comprises an oil mist chamber (1000) and an oil storage chamber (2000), is characterized in that a flow guide component (300) is arranged at the bottom of the oil storage chamber (2000), and the flow guide component (300) is positioned at the inlet end of the oil mist chamber (1000); the flow guide part (300) is provided with a first flow guide hole (320) and a second flow guide channel (330),

a boss (343) is arranged on an oil return opening (334) of the second flow guide channel (330), and is positioned in the first flow guide hole (320);

the plug (200) is movably mounted on the boss (343), the plug (200) comprises a plug part (210) and a limiting claw (220), and the limiting claw (220) is buckled on the boss (343) and is movably connected with the boss (343);

when the vacuum pump works, gas enters the first flow guide hole (320) and pushes the plug (200) to block the oil return port (334), the gas enters the oil mist chamber (1000) through the first flow guide hole (320), and the gas enters the oil storage chamber (2000) after being filtered by the filter cartridge (400) and is discharged;

when the vacuum pump stops working, under the action of gravity, the plug (200) descends and opens the oil return opening (334), and the liquefied oil in the oil storage chamber (2000) flows back to the pump body oil chamber (2) through the second flow guide channel (330).

2. The oil mist discharge device for the vacuum pump as claimed in claim 1, wherein the flow guide member (300) is provided with a transverse conduit portion (341) and a longitudinal conduit portion (432), the transverse conduit portion (341) and the longitudinal conduit portion (432) being communicated; the oil return port (334) is arranged at a lower port of the longitudinal pipeline part (432), the longitudinal pipeline part (432) is arranged at the center of the first flow guide hole (320), and the boss (343) is arranged at the lower end of the longitudinal pipeline part (432).

3. The oil mist exhaust device for the vacuum pump according to claim 2, wherein the second flow guiding passage (330) comprises a horizontal passage (331), a longitudinal passage (332) and an oil inlet (333), the oil inlet (333) is provided on a side wall of the oil storage chamber (2000) and located at two ends of the horizontal passage (331), respectively, and the oil return (334) is located at a bottom of the longitudinal passage (332); the horizontal segment passage (331) is partially located in the transverse conduit portion (341) and the longitudinal segment passage (332) is located in the longitudinal conduit portion (432).

4. The oil mist discharge device for a vacuum pump as claimed in claim 1, wherein the plug portion (210) is a ball.

5. The oil mist discharge device for a vacuum pump as claimed in claim 1, wherein said plug portion (210) is a circular truncated cone.

6. The oil mist exhaust device for the vacuum pump according to claim 5, wherein a weight block (230) is disposed at a bottom of the plug (200), a grip (240) is disposed at a bottom of the plug (200), and the weight block (230) is disposed in the grip (240).

7. The oil mist discharge device for the vacuum pump as claimed in claim 2, wherein the longitudinal pipe portion (432) is provided with a longitudinal groove (344) on an outer side wall thereof, and a distal end of the restricting claw (220) is longitudinally movable in the longitudinal groove (344).

8. The oil mist exhaust device for the vacuum pump according to claim 1, further comprising an outer cover (700) and an inner cylinder (100), wherein the exhaust cover (600) abuts against the upper end of the inner cylinder (100), the filter cartridge (400) is arranged in the inner cylinder, the sealing cover (500) is sleeved on the upper end of the filter cartridge (400), the sealing cover (500) is tightly connected with the exhaust cover (600), the flow guide component (300) is sleeved at the lower end of the filter cartridge (400), the lower end of the inner cylinder (100) is tightly connected with the flow guide component (300), the filter cartridge (400) and the sealing cover (500) form the oil mist chamber (1000), the flow guide component (300), the filter cartridge (400), the inner cylinder (100) and the exhaust cover (600) form the oil storage chamber (2000), and the exhaust cover (600) is made of a flexible material.