CN214764008U

CN214764008U - Oil mist filter

Info

Publication number: CN214764008U
Application number: CN202120861576.2U
Authority: CN
Inventors: 陈鹏
Original assignee: Zhejiang Remarkbl Vacuum Technology Co ltd
Current assignee: Zhejiang Remarkbl Vacuum Technology Co ltd
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2021-11-19
Anticipated expiration: 2031-04-25

Abstract

The utility model provides an oil mist filter belongs to vacuum pump oil mist and filters technical field. It has solved the structure setting of current oil mist filter comparatively complicated, and production assembly cost is higher, the relatively poor problem of structural stability. This oil mist filter sets up back oil pipe including the shell that has venthole, oil outlet between the oil outlet of shell and the oil tank of the vacuum pump body, is provided with the filter core in the shell, and filter core and shell interval cooperation form the oil-gas separation cavity, are provided with the filtration passageway with the oil gas hole intercommunication of the vacuum pump body in the filter core, are provided with the automatic cleaning device who carries out self-cleaning to filtering the passageway inner wall in the filtration passageway of filter core. The utility model has the advantages of reasonable design, simply, carry out automatic clearance to the adsorbed dirt of filtration passageway's inner wall, structural stability is high, long service life dismantles, easy maintenance.

Description

Oil mist filter

Technical Field

The utility model belongs to the technical field of vacuum pump oil mist filters, a oil mist filter is related to.

Background

An oil mist filter is an industrial environment-friendly device. The traditional oil mist filter is lack of a cleaning structure inside, so that after long-term use, a large amount of dirt is adsorbed on the surface of a filter screen inside the oil mist filter, and the purification effect of the oil mist filter is influenced; traditional oil mist filter's filter screen shell sets up with organism integrated into one piece, when needing to change or overhaul the inside filter screen of oil mist filter body, needs to carry out whole dismantlements to oil mist filter body, and the process is comparatively loaded down with trivial details.

In view of the above circumstances, an oil mist filter has been developed, and for example, chinese patent literature discloses a self-cleaning mechanical oil mist filter [ application No.: 202021428601. X; authorization notice number: CN212818732U ], which comprises an oil mist filter main body and a cleaning bottle, wherein an air inlet and an air outlet are respectively fixedly arranged at two ends of the oil mist filter main body, the air inlet and the air outlet are communicated with the internal homogeneous phase of the oil mist filter main body, a filter plate is fixedly arranged on the inner wall surface of the oil mist filter main body, a motor frame is fixedly arranged in the oil mist filter main body, a motor is fixedly arranged on the motor frame through bolts, a motor shaft of the motor is fixedly connected with a rotating shaft through a coupler, an eccentric part is welded on the side surface of the rotating shaft, a scraper is welded at one end of the eccentric part far away from the rotating shaft, a sponge block is fixedly connected on the side surface of the scraper, a liquid inlet is arranged in the top of the oil mist filter main body, a mounting pipe is fixedly arranged on the top of the cleaning bottle, the cleaning bottle and the bottle mouth are in an integrated structure, the bottle mouth is connected in the mounting pipe, and a first liquid storage tank and a second liquid storage tank are arranged in the bottom of the oil mist filter main body, the top parts of the first liquid storage tank and the second liquid storage tank are both provided with a liquid discharge pipe, and the bottom part of the oil mist filter main body is fixedly provided with a supporting seat.

Foretell automatically cleaning formula machinery oil mist filter rotates through pivot, eccentric block, scraper blade and sponge piece synchronization, and the sponge piece washs the filter to set up the fluid-discharge tube and be used for discharge fluid and waste water, its structure sets up comparatively complicatedly, and production assembly cost is higher, and structural stability is relatively poor, and life is shorter.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, can carry out self-cleaning, convenient assembling, long service life's an oil mist filter to the filtration passageway of filter core.

The purpose of the utility model can be realized by the following technical proposal: an oil mist filter can be detachably and fixedly connected to an oil gas hole of a vacuum pump body, the oil mist filter comprises a shell with an air outlet and an oil outlet, an oil return pipe is arranged between the oil outlet of the shell and an oil tank of the vacuum pump body, a filter element is arranged in the shell, the filter element and the shell are matched at intervals to form an oil-gas separation cavity, an oil-gas mixture in the vacuum pump body enters the oil mist filter through the oil-gas hole, the oil-gas mixture is filtered into the oil-gas separation cavity through the filter element arranged in the shell, gas is discharged through the air outlet, oil molecules are intercepted to flow into the oil outlet and flow back into the oil tank of the vacuum pump body through the oil return pipe, the oil mist filter is characterized in that a filter channel communicated with the oil-gas hole of the vacuum pump body is arranged in the filter element, and an automatic cleaning device for automatically cleaning the inner wall of the filter channel is arranged in the filter channel of the filter element, automatic cleaning device including clean piston, clean piston and filter core between set up in elastic component, when the vacuum pump body during operation, this clean piston is under oil gas mixture's pressure effect, elastic component is in the withdrawal state, when the vacuum pump body stop work, this clean piston loses oil gas mixture's pressure effect, this clean piston can slide the clearance to the inner wall of the filtration passageway of filter core through elastic component's elastic action.

This oil mist filter mainly sets up clean piston in the filtration passageway of filter core, and the vacuum pump body during stop work, clean piston can carry out the automatic sliding clearance to the inner wall of the filtration passageway of filter core through elastic component's elastic action, and convenient to use ensures that filtration passageway's intranet face is clean and tidy, improves the life of filter core, and oil-gas mixture's oil, gas separation's effect is better, simple structure, and the clearance is convenient.

In the above oil mist filter, the elastic assembly includes a guide post and a compression spring, the guide post is coaxially and fixedly disposed in the filtering channel, the compression spring and the cleaning piston are coaxially and slidably sleeved on the guide post, the compression spring elastically acts on the cleaning piston, an outer wall of the cleaning piston is in sliding contact with an inner wall of the filtering channel of the filter element, and an inner wall of the cleaning piston is in sliding contact with an outer wall of the guide post. The purpose that sets up like this is the vertical clearance that slides of inner wall of ensureing clean piston along the filtration passageway of filter core, stable in structure, and it is clean convenient.

In foretell oil mist filter, the filter core strain seat, filter assembly and strain the seat down including last, last strain seat, filter assembly and strain the seat down and be vertical support and lean on and set up in the shell, filtration passageway set up in filter assembly, the guide post be in vertical filter assembly and the upper end of guide post is fixed on last strain the seat, strain the seat down and set up through the mouth, should filter the passageway through mouthful and oil gas hole intercommunication. The purpose that sets up like this is that convenient upper filter seat, filter element and lower filter seat dismantle the assembly, make things convenient for filter element to change, maintain.

In the oil mist filter, the filtering component comprises double-layer filter screen plate sleeves, a placing frame is arranged between the double-layer filter screen plate sleeves, and the placing frame is supported between an upper filtering seat and a lower filtering seat. The purpose that sets up like this can effectively improve filtering component's oil gas filter effect, stable in structure.

In foretell oil mist filter, the bottom of shell can dismantle and be connected with the base, the relative intercommunication in oil gas hole of the base and the vacuum pump body, the base on have and found the enclosure and form the assembly position, lower filter seat screens assemble in the assembly position of the enclosure portion that found of base, the shell in have the assembly spring that is vertical setting, assembly spring elastic action at last filter between seat, the shell. The purpose that sets up like this makes things convenient for filtering component to assemble in the shell, supports by the assembly spring elasticity and leans on in filtering component, prevents the vertical drunkenness of filtering component.

In the oil mist filter, the upper end of the housing is provided with a vertically arranged air outlet cylinder, the air outlet cylinder is internally provided with the air outlet hole, the orifice at the inner end of the air outlet hole is provided with a spring seat, the upper end of the upper filter seat is provided with a convex seat, the upper end of the assembling spring elastically acts on the spring seat of the air outlet hole of the air outlet cylinder, and the lower end of the assembling spring elastically acts on the convex seat of the upper filter seat. This is intended to provide a stable assembly of the assembly spring in the housing, preventing radial displacement of the assembly spring in the housing.

In the oil mist filter, the bottom of the housing is provided with an upper outward turning edge, the base is provided with a lower outward turning edge, and the upper outward turning edge and the lower outward turning edge are detachably and fixedly connected through a hoop. The purpose of setting up like this is convenient shell, base relatively demountable assembly, conveniently dismantles, changes, maintains.

In the oil mist filter, a sealing ring is arranged between the upper everting edge and the lower everting edge, and the upper everting edge and the lower everting edge are relatively sealed by the sealing ring. The purpose of setting up like this can guarantee the sealed validity of both edges of turning up and turning up down when the assembly, and sealed effect is better.

Compared with the prior art, this oil mist filter's advantage does: the structure is reasonable and simple in design, dirt adsorbed on the inner wall of the filtering channel of the filter element is automatically cleaned through the cleaning piston, so that the inner mesh surface of the filtering channel of the filter screen plate sleeve of the inner layer is clean and tidy, and the service life of the filter screen plate sleeve is prolonged; the shell and the base are detachably connected, so that the replacement and the maintenance of parts in the shell are facilitated; high structural stability and long service life.

Drawings

Fig. 1 is a schematic perspective view of a partial cross-sectional view of the oil mist filter according to the present invention.

Fig. 2 is a schematic sectional view of the oil mist filter of the present invention.

In the figure, 1, a vacuum pump body; 2. an air outlet; 3. an oil outlet hole; 4. a housing; 5. an oil return pipe; 6. a filter element; 7. an oil-gas separation chamber; 8. a filtration channel; 9. cleaning the piston; 10. a guide post; 11. a compression spring; 12. an upper filter base; 13. a filter assembly; 14. a lower filter base; 15. a filter screen plate sleeve; 16. placing a rack; 17. a base; 18. a vertical surrounding part; 19. assembling a spring; 20. an air outlet cylinder; 21. turning up and turning out edges; 22. turning down and turning up edges; 23. a hoop; 24. and (4) a sealing ring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figures 1 and 2, the oil mist filter is detachably and fixedly connected on an oil gas hole of a vacuum pump body 1, the oil mist filter mainly comprises a shell 4 with an air outlet 2 and an oil outlet 3, wherein an oil return pipe 5 is arranged between the oil outlet 3 of the shell 4 and an oil tank of a vacuum pump body 1, a filter element 6 is arranged in the shell 4, the filter element 6 and the shell 4 are matched at intervals to form an oil-gas separation chamber 7, an oil-gas mixture in the vacuum pump body 1 enters the oil mist filter through the oil-gas hole, the oil-gas mixture is filtered into the oil-gas separation chamber 7 through the filter element 6 arranged in the shell 4, gas is discharged through the air outlet 2, oil molecules are intercepted and flow to the oil outlet 3, and flow back into the oil tank of the vacuum pump body 1 through the oil return pipe 5, a filter channel 8 communicated with the oil-gas hole of the vacuum pump body 1 is arranged in the filter element 6, and an automatic cleaning device for self-cleaning the inner wall of the filter channel 8 is arranged in the filter channel 8 of the filter element 6; in actual manufacturing, the specific implementation mode of the automatic cleaning device is as follows: the cleaning device mainly comprises a cleaning piston 9, and an elastic component is arranged between the cleaning piston 9 and the filter element 6; when the vacuum pump body 1 during operation, this clean piston 9 is in the state of retracting under the pressure effect of oil-gas mixture, and when the vacuum pump body 1 stop work, this clean piston 9 loses the pressure effect of oil-gas mixture, and this clean piston 9 can slide the clearance to the inner wall of the filtration passageway 8 of filter core 6 through elastic component's elastic action.

In practical manufacturing, the elastic component is embodied in the following manner: mainly constitute by guide post 10 and compression spring 11, guide post 10 sets firmly in filtering passageway 8 with the axial, and compression spring 11 and clean piston 9 all locate guide post 10 with axial sliding sleeve, and this compression spring 11 elastic action is on clean piston 9, and the outer wall of clean piston 9 and the inner wall sliding contact of filtering passageway 8 of filter core 6, the inner wall of clean piston 9 and the outer wall sliding contact of guide post 10.

In actual manufacturing, the specific implementation structure of the filter element 6 is as follows: the oil gas filter mainly comprises an upper filter base 12, a filter assembly 13 and a lower filter base 14, wherein the upper filter base 12, the filter assembly 13 and the lower filter base 14 are vertically abutted and arranged in a shell 4, a filter passage 8 is formed in the filter assembly 13, a guide column 10 is in the vertical filter assembly 13, the upper end of the guide column 10 is fixed on the upper filter base 12, a through hole is formed in the lower filter base 14, and the filter passage 8 is communicated with an oil gas hole through the through hole; specifically, the method comprises the following steps: the filtering component 13 mainly comprises double-layer filter screen plate sleeves 15, a placing frame 16 is arranged between the double-layer filter screen plate sleeves 15, and the placing frame 16 is supported between an upper filtering seat 12 and a lower filtering seat 14.

During actual manufacturing, the bottom of the shell 4 is detachably connected with a base 17, the base 17 is relatively communicated with an oil gas hole of the vacuum pump body 1, a standing and surrounding part 18 is arranged on the base 17 to form an assembly position, the lower filter base 14 is clamped and assembled in the assembly position of the standing and surrounding part 18 of the base 17, an assembly spring 19 which is vertically arranged is arranged in the shell 4, and the assembly spring 19 elastically acts between the upper filter base 12 and the shell 4; the specific assembly structure of the assembly spring 19 is as follows: the upper end tip of shell 4 has the play chimney 20 that is vertical setting, forms in the play chimney 20 venthole 2, the drill way department in the inner of venthole 2 has the spring holder, and the upper end of straining seat 12 on has a convex base, and the upper end elasticity of assembly spring 19 acts on the spring holder of the venthole 2 of play chimney 20, and the lower extreme elasticity of assembly spring 19 acts on the convex base of straining seat 12.

In actual manufacturing, the bottom of the shell 4 is provided with an upper outwards-turned edge 21, the base 17 is provided with a lower outwards-turned edge 22, and the upper outwards-turned edge 21 and the lower outwards-turned edge 22 are detachably and fixedly connected through a hoop 23; a sealing ring 24 is arranged between the upper everting edge 21 and the lower everting edge 22, and the upper everting edge 21 and the lower everting edge 22 are relatively sealed by the sealing ring 24.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an oil mist filter, can dismantle and link firmly on the oil gas hole of the vacuum pump body (1), this oil mist filter is including shell (4) that has venthole (2), oil outlet (3), the oil tank of the oil outlet (3) of shell (4) and vacuum pump body (1) between set up oil return pipe (5), shell (4) in be provided with filter core (6), filter core (6) and shell (4) interval cooperation form oil-gas separation cavity (7), in the oil-gas mixture in the vacuum pump body (1) passes through the oil gas hole and gets into the oil mist filter, filters to oil-gas separation cavity (7) through filter core (6) that sets up in shell (4), gaseous discharges through venthole (2), oil molecules are held back to flow direction oil outlet (3), flow back to the oil tank of the vacuum pump body (1) through oil return pipe (5), its characterized in that, filter core (6) in be provided with filtration passageway (8) with the oil gas hole intercommunication of vacuum pump body (1), filtration passageway (8) of filter core (6) in be provided with the automatic cleaning device who carries out self-cleaning to filtration passageway (8) inner wall, automatic cleaning device including clean piston (9), clean piston (9) and filter core (6) between set up in elastic component, when vacuum pump body (1) during operation, this clean piston (9) are under oil gas mixture's pressure effect, elastic component is in the withdrawal state, when vacuum pump body (1) stop work, this clean piston (9) lose oil gas mixture's pressure effect, this clean piston (9) can slide the clearance to the inner wall of filtration passageway (8) of filter core (6) through elastic component's elastic effect.

2. The oil mist filter according to claim 1, characterized in that the elastic assembly comprises a guide post (10) and a compression spring (11), the guide post (10) is coaxially and fixedly arranged in the filter passage (8), the compression spring (11) and the cleaning piston (9) are coaxially and slidably sleeved on the guide post (10), the compression spring (11) elastically acts on the cleaning piston (9), the outer wall of the cleaning piston (9) is in sliding contact with the inner wall of the filter passage (8) of the filter element (6), and the inner wall of the cleaning piston (9) is in sliding contact with the outer wall of the guide post (10).

3. The oil mist filter according to claim 2, characterized in that the filter element (6) comprises an upper filter base (12), a filter assembly (13) and a lower filter base (14), the upper filter base (12), the filter assembly (13) and the lower filter base (14) are vertically abutted against and arranged in the housing (4), the filter passage (8) is arranged in the filter assembly (13), the guide post (10) is arranged in the vertical filter assembly (13) and the upper end of the guide post (10) is fixed on the upper filter base (12), the lower filter base (14) is provided with a through hole, and the filter passage (8) is communicated with the oil gas hole through the through hole.

4. The oil mist filter according to claim 3, characterized in that the filter assembly (13) comprises double-layer filter screen plate sleeves (15), a placing frame (16) is arranged between the double-layer filter screen plate sleeves (15), and the placing frame (16) is supported between the upper filter base (12) and the lower filter base (14).

5. The oil mist filter according to claim 4, characterized in that the bottom of the housing (4) is detachably connected with a base (17), the base (17) is communicated with the oil-gas hole of the vacuum pump body (1) relatively, the base (17) is provided with a standing surrounding part (18) to form an assembly position, the lower filter base (14) is clamped and assembled in the assembly position of the standing surrounding part (18) of the base (17), the housing (4) is internally provided with an assembly spring (19) which is vertically arranged, and the assembly spring (19) elastically acts between the upper filter base (12) and the housing (4).

6. The oil mist filter according to claim 5, wherein the upper end of the housing (4) is provided with a vertically arranged air outlet cylinder (20), the air outlet cylinder (20) is internally provided with the air outlet hole (2), a spring seat is arranged at the opening of the inner end of the air outlet hole (2), the upper end of the upper filter seat (12) is provided with a convex seat, the upper end of the assembling spring (19) elastically acts on the spring seat of the air outlet hole (2) of the air outlet cylinder (20), and the lower end of the assembling spring (19) elastically acts on the convex seat of the upper filter seat (12).

7. The oil mist filter according to claim 6, characterized in that the bottom of the housing (4) is provided with an upper outwardly turned edge (21), the base (17) is provided with a lower outwardly turned edge (22), and the upper outwardly turned edge (21) and the lower outwardly turned edge (22) are detachably and fixedly connected through a hoop (23).

8. An oil mist filter according to claim 7, characterized in that a sealing ring (24) is arranged between the upper outwardly turned rim (21) and the lower outwardly turned rim (22), and the upper outwardly turned rim (21) and the lower outwardly turned rim (22) are relatively sealed by the sealing ring (24).