CN209084080U - Check-valves for vacuum pump - Google Patents
Check-valves for vacuum pump Download PDFInfo
- Publication number
- CN209084080U CN209084080U CN201821917438.6U CN201821917438U CN209084080U CN 209084080 U CN209084080 U CN 209084080U CN 201821917438 U CN201821917438 U CN 201821917438U CN 209084080 U CN209084080 U CN 209084080U
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- CN
- China
- Prior art keywords
- valve body
- check
- return valve
- hole
- counterbore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Details Of Valves (AREA)
- Check Valves (AREA)
Abstract
The utility model discloses the check-valves for vacuum pump, are related to field of check valves.The utility model includes non-return valve body and flexible gasket；A round through hole is offered at check-valves ontology axle center；Check-valves body upper surface, which is opened up, is distributed counterbore there are two symmetrical；Filter screen is provided in counterbore；A valve deck is hinged with above counterbore；Round through hole corresponding non-return valve body two sides offer lumen；One end of lumen is connected to counterbore；Several not perforative bolts hole and multiple spiro keyhole positions are equipped on the inside of non-return valve body on the same concentric circles；A double threaded screw consistent in length is fixed on multiple bolts hole；Several circular holes to match with double threaded screw are offered on flexible gasket edge.Flexible gasket is movably connected on double threaded screw by fixing more double threaded screws on non-return valve body by the utility model, makes to form confined space in check-valves, so that vacuum valve reflux be avoided to flow backward, improves the service life of vacuum pump, easy to repair.
Description
Technical field
The utility model belongs to field of check valves, more particularly to the check-valves for vacuum pump.
Background technique
Vacuum pump or compressor are a kind of gas transportation facilities, and the gas of discharge is with certain positive pressure, and water ring is true
Sky pump must be sealed by water or liquid, it plays the role of transmitting energy simultaneously.
We are known that according to vacuum pump working principle: what vacuum pump was discharged is the mixture of water (or liquid) and gas,
And according to design, production line is usually to run for 24 hours, it is therefore desirable to be arranged two equipment one in use, another
As stand-by equipment, appendage vacuum pump is in starting state at any time (by chain, automatic control).
The general outlet of vacuum pump is with certain row pressure, and if it is vacuum compressor or compressor, row pressure is just bigger, though
Right vacuum pump mating air water (liquid) separator is provided with (liquid) plate that blocks water, and can efficiently separate air water (liquid), but be centainly discharged
Under pressure (compressor is just bigger), it is outer that a large amount of water (or liquid) will take pump out of, if liquid is toxic or corrodes, it will right
Human body and equipment are damaged or are damaged；A large amount of leaked liquids simultaneously, it will make vacuum pump level fluctuation, vacuum pump operation is unstable
It is fixed, while moisturizing (or liquid) device ceaselessly opens the service life for also influencing equipment.
Due to vacuum pump use one spare working method of an operation, when two vacuum pumps switch when, Jiu Huizao
It is communicated at system with outside atmosphere, causes vacuum to flow backward, reduce rapidly system vacuum, to jeopardize the operational safety of equipment.
Effectively to carry out gas and water separation, pressure difference working principle is generally utilized at present, by exhaust ports design at one long
The height of exhaust pipe, discharge line determines according to row pressure size, for prevent vacuum pump when stopping transport outside sundries enter it is true
Sky pump, is generally configured to U-shaped structure, although it can return to liquid in gas and water separator, under the effect of gravity, liquid
Body will generate huge impact force when returning and cause liquid fluctuating, drain vacuum pump high liquid level drainage arrangement ceaselessly, from
And influence the performance of vacuum pump；Simultaneously in the moment of vacuum pump switching, it may appear that vacuum is flowed backward, to jeopardize equipment operation peace
Entirely.
Utility model content
The purpose of this utility model is to provide the check-valves for vacuum pump, by opening in non-return valve body two sides
If lumen, lumen is connected to the counterbore of the upper surface of non-return valve body, is hinged with a valve deck above counterbore, then pass through flexible gasket
It is slided up and down in double threaded screw, avoids generating vacuum reverse irrigation, solved existing vacuum pump and be easy to appear reverse irrigation, influence equipment fortune
The problem of row safety.
In order to solve the above technical problems, the utility model is achieved through the following technical solutions:
The utility model is the check-valves for vacuum pump, including non-return valve body and flexible gasket；The check-valves sheet
Body is a circular slab；A round through hole is offered at check-valves ontology axle center；The circle through hole and vacuum pump
It is corresponding to cover valve opening；The check-valves body upper surface, which is opened up, is distributed counterbore there are two symmetrical；The two counterbore positions
In round through hole two sides；Filter screen is provided in the counterbore；A valve deck is hinged with above the counterbore；Bonnet lower surface is set
It is equipped with round gasket；The circle through hole corresponding non-return valve body two sides offer lumen；The lumen
One end is connected to counterbore；Several not perforative bolts hole and multiple spiro keyhole positions are equipped on the inside of the non-return valve body in same
On concentric circles；A double threaded screw consistent in length is fixed on multiple bolts hole；The flexible gasket is circle；It is described
Several circular holes to match with double threaded screw are offered on flexible gasket edge；The flexible gasket lower surface is provided with rubber
Plug；The rubber stopper is overlapped with flexible gasket axle center；The rubber stopper diameter is less than flexible gasket diameter and rubber stopper and circle
Through hole cooperates；The rubber stopper height is identical as check-valves body height.
Further, the gasket diameter is equal to or more than the diameter of valve deck.
Further, the double threaded screw is tightened far from one end of bolt hole by nut, and the double threaded screw assembles
Afterwards, in-between position is smooth and intermediate span access location length is greater than rubber stopper thickness.
The utility model has the following beneficial effects:
Flexible gasket is movably connected in double end by fixing more double threaded screws on non-return valve body by the utility model
On screw rod, when vacuum pump operation, flexible gasket is jacked up when gas is discharged in vacuum pump, gas is arranged from counterbore by lumen
Out, when vacuum pump is out of service, hinged valve deck is closed flexible gasket simultaneously and is fallen above counterbore, makes to be formed in check-valves close
Space is closed, so that vacuum valve reflux be avoided to flow backward, improves the service life of vacuum pump, check valve structure is simple, easy to repair.
Certainly, any product for implementing the utility model does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is the check valve structure schematic diagram under vacuum pump working condition；
Fig. 2 is the check valve structure schematic diagram under vacuum pump halted state
In attached drawing, parts list represented by the reference numerals are as follows:
1- non-return valve body, 2- flexible gasket, 3- valve deck, 4- double threaded screw, 101- circle through hole, 102- counterbore,
103- filter screen, 104- lumen, 201- rubber stopper, 301- gasket.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
All other embodiment obtained, fall within the protection scope of the utility model.
It please refers to shown in Fig. 1-2, the utility model is the check-valves for vacuum pump, including non-return valve body 1 and flexibility
Gasket 2；
Non-return valve body 1 is a circular slab；A round through hole 101 is offered at 1 axle center of non-return valve body；Circle is passed through
Through-hole 101 is corresponding with the covering valve of vacuum pump opening；1 upper surface of non-return valve body, which is opened up, is distributed counterbore there are two symmetrical
102；Two counterbores 102 are located at 101 two sides of round through hole；Filter screen 103 is provided in counterbore 102, ash can be isolated in strainer 103
Trifle in the world matter, it is ensured that vacuum pump internal environment is not contaminated；A valve deck 3 is hinged with above counterbore 102；3 lower surface of valve deck is provided with
Round gasket 301；The corresponding 1 inside two sides of non-return valve body of round through hole 101 offer lumen 104；Lumen 104
One end be connected to counterbore 102；It is set on the inside of non-return valve body 1 there are three not perforative bolt hole and three spiro keyhole positions is in same
On a concentric circles；A double threaded screw 4 consistent in length is fixed on three bolts hole；
Flexible gasket 2 is circle；The circular hole to match there are three being opened up on 2 edge of flexible gasket with double threaded screw 4；It is flexible
2 lower surface of gasket is provided with rubber stopper 201；Rubber stopper 201 is overlapped with 2 axle center of flexible gasket；201 diameter of rubber stopper is less than soft
Property 2 diameter of gasket and rubber stopper 201 and round through hole 101 cooperate；201 height of rubber stopper and 1 height of non-return valve body
It is identical.
Wherein, 301 diameter of gasket is equal to or more than the diameter of valve deck 3, improves the leakproofness of valve deck.
Wherein, double threaded screw 4 is tightened far from one end of bolt hole by nut, after double threaded screw 4 assembles, intermediate portion
Position is smooth and intermediate span access location length is greater than 201 thickness of rubber stopper, and when jacking up rubber stopper 201 by gas, air-flow can be from lumen
The valve deck 3 of 102 top of counterbore is jacked up after 104 inflow counterbores, gas is discharged from counterbore 102.
One concrete application of the present embodiment are as follows:
When vacuum pump operation, the gas in vacuum pump needs to be discharged, and the pressure of the gas of vacuum discharge at this time is greater than the external world
Atmospheric pressure, when the pressure of air discharge gas is greater than the sum of flexible gasket self gravity and external atmosphere pressure surely, flexible gasket
It is moved up along double threaded screw, so that gas is discharged from counterbore again after lumen entrance；
When vacuum pump is out of service, the pressure that gas is discharged in vacuum is less than flexible gasket self gravity and external atmosphere pressure
The sum of when, flexible gasket is moved down along double threaded screw, lumen is blocked, while valve deck above counterbore is closed, and is improved
The leakproofness of vacuum pump, it is ensured that liquid flows backward from check-valves.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory
The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this
Utility model.The utility model is limited only by the claims and their full scope and equivalents.
Claims (3)
1. being used for the check-valves of vacuum pump, including non-return valve body (1) and flexible gasket (2), it is characterised in that:
The non-return valve body (1) is a circular slab；A round through hole is offered at non-return valve body (1) axle center
(101)；The circle through hole (101) is corresponding with the covering valve of vacuum pump opening；It opens non-return valve body (1) upper surface
If there are two symmetrically distributions counterbore (102)；Two counterbores (102) are located at round through hole (101) two sides；The counterbore
(102) filter screen (103) are provided in；A valve deck (3) are hinged with above the counterbore (102)；Valve deck (3) lower surface is provided with
Round gasket (301)；Circle through hole (101) corresponding non-return valve body (1) inside two sides offer lumen
(104)；One end of the lumen (104) is connected to counterbore (102)；Do not run through on the inside of the non-return valve body (1) equipped with several
Bolt hole and multiple spiro keyhole positions on the same concentric circles；One consistent in length pair is fixed on multiple bolts hole
Head screw rod (4)；
The flexible gasket (2) is circle；It offers and several matches on flexible gasket (2) edge with double threaded screw (4)
Circular hole；Flexible gasket (2) lower surface is provided with rubber stopper (201)；The rubber stopper (201) and flexible gasket (2) axis
The heart is overlapped；Rubber stopper (201) diameter is less than flexible gasket (2) diameter and rubber stopper (201) and round through hole (101) phase
Mutually cooperation；The rubber stopper (201) is highly identical as non-return valve body (1) height.
2. the check-valves according to claim 1 for vacuum pump, which is characterized in that described gasket (301) diameter etc.
In or be greater than valve deck (3) diameter.
3. the check-valves according to claim 1 for vacuum pump, which is characterized in that the double threaded screw (4) is far from spiral shell
One end of keyhole is tightened by nut, and after the double threaded screw (4) assembles, in-between position is smooth and intermediate span access location length is big
In rubber stopper (201) thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821917438.6U CN209084080U (en) | 2018-11-21 | 2018-11-21 | Check-valves for vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821917438.6U CN209084080U (en) | 2018-11-21 | 2018-11-21 | Check-valves for vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209084080U true CN209084080U (en) | 2019-07-09 |
Family
ID=67124870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821917438.6U Expired - Fee Related CN209084080U (en) | 2018-11-21 | 2018-11-21 | Check-valves for vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209084080U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828367A (en) * | 2020-07-22 | 2020-10-27 | 中国空气动力研究与发展中心超高速空气动力研究所 | Anti-surge protection device and method for high-speed centrifugal vacuum pump |
-
2018
- 2018-11-21 CN CN201821917438.6U patent/CN209084080U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828367A (en) * | 2020-07-22 | 2020-10-27 | 中国空气动力研究与发展中心超高速空气动力研究所 | Anti-surge protection device and method for high-speed centrifugal vacuum pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190709 Termination date: 20211121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |