CN208885523U - A kind of oil-gas recovery vacuum pump backflow preventing structure - Google Patents
A kind of oil-gas recovery vacuum pump backflow preventing structure Download PDFInfo
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- CN208885523U CN208885523U CN201820356534.1U CN201820356534U CN208885523U CN 208885523 U CN208885523 U CN 208885523U CN 201820356534 U CN201820356534 U CN 201820356534U CN 208885523 U CN208885523 U CN 208885523U
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- vacuum pump
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Abstract
The utility model relates to oil-gas recovery vacuum pump technical field, in particular to a kind of oil-gas recovery vacuum pump backflow preventing structure.Its structure includes tie-plate, it is driveed on tie-plate there are two gas outlet, is provided with rubber pad and washer at the gas outlet of the tie-plate, the rubber pad and washer are bolted on tie-plate, and there are gaps between tie-plate and rubber pad, can form a narrow air outlet passage.A kind of oil-gas recovery vacuum pump backflow preventing structure of the utility model, it can be by being arranged check valve, prevent oil-gas recovery vacuum pump in the case where motor wiring error, gas backstreaming damaged blade and the equipment being connected with oil-gas recovery vacuum pump, and most of impurity generated by blade wear can be stopped to be discharged through gas outlet, reduce the solid particulate matter of gas outlet.
Description
Technical field
The utility model relates to oil-gas recovery vacuum pump technical field, in particular to a kind of oil-gas recovery vacuum pump counterflow-preventing
Structure.
Background technique
Oil-gas recovery vacuum pump under the prior art is usually that gas enters above the pump housing into air outlet structure, via
The pumping of internal lobe slice structure is pumped, by being vented below the pump housing, and not set check valve will lead to gas when motor wiring error
The equipment for flowing backwards damaged blade and being connected with oil-gas recovery vacuum pump, in addition, in leaf structure operation process, unavoidably
Meeting generate blade wear after solid particle, significantly increase the impurity content of outlet gas.
Utility model content
In order to solve problems in the prior art, the utility model provides a kind of oil-gas recovery vacuum pump backflow preventing structure,
It can prevent oil-gas recovery vacuum pump in the case where motor wiring error, gas backstreaming damages leaf by the way that check valve is arranged
Piece and the equipment being connected with oil-gas recovery vacuum pump, and most of impurity generated by blade wear can be stopped through outlet
Mouth discharge, reduces the solid particulate matter of gas outlet.
Technical solution used by the utility model is as follows:
A kind of oil-gas recovery vacuum pump backflow preventing structure, including tie-plate, drive that there are two gas outlets on tie-plate, described
It connecing and is provided with rubber pad and washer at the gas outlet of disk, the rubber pad and washer are bolted on tie-plate, and
There are gaps between tie-plate and rubber pad, can form a narrow air outlet passage.
Rubber pad divides upper layer and lower layer, connect and is bolted on tie-plate with washer.
When gas is flowed through by design, gas push rubber pad is opened to the direction far from tie-plate, and gas is suitable
For benefit by gas outlet, when gas reflux, gas push rubber pad is close to tie-plate, is closed gas outlet.
It, can be a large amount of through the port on tie-plate under the promotion of gas when the impurity that blade wear generates passes through check valve
It is covered on rubber pad.
Technical solution provided by the utility model has the benefit that
1, structure is simple, easily fabricated and installation.All parts are standard component in addition to tie-plate, and tie-plate blank is pressure
Casting only need to process plane and drilling, and compared to the oil-gas recovery vacuum pump of not check valve, work efficiency is than with the obvious advantage.
2, reliable performance is hardly damaged.The service life of this check valve depends entirely on the degree of aging of rubber material, belongs to
In the device not needed to change in oil-gas recovery vacuum pump service life.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of oil-gas recovery vacuum pump backflow preventing structure of the utility model；
Fig. 2 is a kind of working principle diagram of oil-gas recovery vacuum pump backflow preventing structure of the utility model.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
Embodiment one
A kind of oil-gas recovery vacuum pump backflow preventing structure, including tie-plate 1, drive that there are two gas outlet 2, institutes on tie-plate 1
It states and is provided with rubber pad 3 and washer 4 at the gas outlet 2 of tie-plate 1, the rubber pad 3 and washer 4 are fixed on by bolt 5
On tie-plate 1, and there are gaps between tie-plate 1 and rubber pad 3, can form a narrow air outlet passage 6.
Rubber pad 3 divides upper layer and lower layer, connect with washer 4 and is fixed on tie-plate 1 by bolt 5.
As shown in Fig. 2, when oil-gas recovery vacuum pump works normally, disengaging gas by the right side to left, gas in A chamber due to
Under the action of pressure, B chamber is entered by the gas outlet 2 on tie-plate 1,2 face rubber pad 3 of gas outlet makes impurity be covered on rubber
On pad 3.When oil-gas recovery vacuum pump blowback, pass in and out gas by left-to-right, gas in B chamber due to pressure under the action of, by rubber
Rubber mat 3 pushes tie-plate 1 to, so that gas outlet 2 and B chamber completely cut off, to avoid blow-back.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (2)
1. a kind of oil-gas recovery vacuum pump backflow preventing structure, including tie-plate, which is characterized in that be provided with two on the tie-plate
A gas outlet, rubber pad and washer are provided at the gas outlet of the tie-plate, and the rubber pad and washer are solid by bolt
It is scheduled on tie-plate, and there are gaps between tie-plate and rubber pad, can form a narrow air outlet passage.
2. a kind of oil-gas recovery vacuum pump backflow preventing structure according to claim 1, which is characterized in that the rubber pad point
Upper layer and lower layer connect with washer and are bolted on tie-plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820356534.1U CN208885523U (en) | 2018-03-16 | 2018-03-16 | A kind of oil-gas recovery vacuum pump backflow preventing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820356534.1U CN208885523U (en) | 2018-03-16 | 2018-03-16 | A kind of oil-gas recovery vacuum pump backflow preventing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208885523U true CN208885523U (en) | 2019-05-21 |
Family
ID=66492042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820356534.1U Active CN208885523U (en) | 2018-03-16 | 2018-03-16 | A kind of oil-gas recovery vacuum pump backflow preventing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208885523U (en) |
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2018
- 2018-03-16 CN CN201820356534.1U patent/CN208885523U/en active Active
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