CN207229846U - A kind of low pressure double containment gas-liquid separation check valve - Google Patents
A kind of low pressure double containment gas-liquid separation check valve Download PDFInfo
- Publication number
- CN207229846U CN207229846U CN201720979403.4U CN201720979403U CN207229846U CN 207229846 U CN207229846 U CN 207229846U CN 201720979403 U CN201720979403 U CN 201720979403U CN 207229846 U CN207229846 U CN 207229846U
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- valve
- valve body
- housing
- away
- spool
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Abstract
The utility model discloses a kind of low pressure double containment gas-liquid separation check valve, including the second valve body, spool, the first valve body and valve ball, one end of first valve body is provided with the second valve body, and second the one end of one end and the first valve body away from the second valve body of valve body away from the first valve body be mounted on cutting ferrule, be mounted on attaching nut on the outside of the cutting ferrule.The utility model is by being provided with valve plate, and valve plate and the first spring are connected, so that the inlet of the check valve can be sealed, device is by being provided with valve ball, and valve ball is connected by the first housing with second spring so that can seal the liquid outlet of the check valve, the check valve is by using above-mentioned double sealing structure, so that gas and liquid can be isolated at the check valve, liquid is added equipment normal operation, ensure that liquid additive amount is accurate.
Description
Technical field
Valve technology field is the utility model is related to, is specially a kind of low pressure double containment gas-liquid separation check valve.
Background technology
With the continuous development of society, the continuous development of the industry such as construction industry, machinery manufacturing industry and progress so that valve is answered
With more and more extensive, while the effect of valve is also more and more important, and check valve is that fluid can only be flowed along water inlet, and water outlet is situated between
The valve that matter can not but flow back, check valve are also known as check-valves or non-return valve, for preventing oil stream reverse flow in hydraulic system, or
Person is used to prevent compressed air reverse flow in pneumatic system, at present, in the industries such as combustion gas, oil, chemical industry, new energy, needs
Chemical liquid is added in low-pressure gas pipeline, general per minute of the medicine machine of above-mentioned industry works 1-10 times, and defeated
Output is small, if one-way sealing is bad, gas can push up back equipment storage tank, make addition the liquid got when equipment does not work
The equipment of liquid cannot be worked normally, while existing inner elements of check valve is mostly single layer structure, with the increasing of usage time
The adhesion of the deposition, dirt of dirt can be produced on long valve seat so that spool can not be in close contact with valve base chamber and cause to close not
Sternly, anti-return effect is influenced, meanwhile, fixed contact surface, single-point abrasion increase spool for a long time with valve seat, reduction of service life.
Utility model content
The purpose of this utility model is to provide a kind of low pressure double containment gas-liquid separation check valve, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the utility model provides following technical solution：A kind of low pressure double containment gas-liquid separation is unidirectional
Valve, including the second valve body, spool, the first valve body and valve ball, one end of first valve body are provided with the second valve body, and second
The one end of one end and the first valve body away from the second valve body of valve body away from the first valve body is mounted on cutting ferrule, the outside of the cutting ferrule
Attaching nut is mounted on, the side of the inside of the first valve body away from the second valve body is provided with the first cavity, and first is empty
Chamber is provided with valve ball close to the side of the second valve body, and side of the valve ball away from the second valve body is provided with the first housing,
And first the one end of housing away from valve ball the second housing is installed, first housing is equal close to the both sides of the second shell one end
Sliding block is installed, the both sides of second enclosure interior are both provided with sliding slot, and sliding slot is connected with sliding block, second housing
Inside is provided with second spring, and second spring is connected close to one end of the first housing with the first housing, first housing and
Through hole is all evenly arranged with the lateral wall of second housing, the inside of first valve body is provided with close to the side of the second valve body
Second cavity, and the side of the second cavity is connected with the inside of the second valve body, the opposite side of the second cavity and the first cavity phase
Connection, the inside of second cavity are provided with spool overcoat, and the inside of spool overcoat is provided with spool, the spool it is interior
Portion is provided with limiting slot, and the spool overcoat is provided with fixed plate close to one end of the second valve body, and fixed plate away from spool outside
The side of set is provided with the first spring, and the described one end of first spring away from spool overcoat is provided with valve plate, and valve plate is away from
The side of one spring is provided with decontamination plate, and the decontamination plate is provided with valve rod close to the side of the first spring, and valve rod is away from removing
One end of dirty plate is connected through valve plate and fixed plate with limiting slot.
Preferably, it is evenly arranged with inlet on side wall of the spool overcoat away from the second valve body side.
Preferably, the internal diameter of the outside diameter and the second housing of first housing is equal in magnitude.
Preferably, the cutting ferrule and the junction of the second valve body and the first valve body are respectively and fixedly provided with sealing rubber ring.
Preferably, external screw thread is provided with the lateral wall of the valve rod, and is provided with the madial wall of limiting slot and outer spiral shell
The internal thread that line cooperates.
Compared with prior art, the beneficial effects of the utility model are：The low pressure double containment gas-liquid separation check valve passes through
Valve plate is installed, and valve plate and the first spring are connected so that the inlet of the check valve can be sealed, device is by being provided with
Valve ball, and valve ball is connected by the first housing with second spring so that the liquid outlet of the check valve can be sealed, this is unidirectional
Valve is by using above-mentioned double sealing structure so that gas and liquid can be isolated at the check valve, liquid is added equipment
Can normal operation, ensure that liquid additive amount is accurate, device is by being provided with valve rod, and valve rod and limiting slot combine, and device is pacified
Equipped with the first housing, the first housing and the second housing combine so that can protect second spring and the first spring, strengthen spring works
Stability, avoid check valve long-time service so that spring fracture damages, cause gas or liquid reverse circulated, device passes through peace
Equipped with decontamination plate so that dirt that can be at automated cleaning the second valve body inlet, avoids valve plate by dirty stuck in fully open position,
Gas leakage or liquid leakage, and valve rod can drive valve plate and decontamination plate rotation, the inlet of valve plate and the second valve body is produced phase
To rotation, it is ensured that valve plate and the second valve body inlet will not long-term single-contact, reduce fixed position abrasion, it is ensured that check valve
Leakproofness, extends check valve service life.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the spool combining structure schematic diagram of the utility model；
Fig. 3 is the valve ball combining structure schematic diagram of the utility model；
In figure：1- attaching nut；The second valve bodies of 2-；The first springs of 3-；4- spool overcoats；5- spools；The first valve bodies of 6-；7-
First housing；8- sliding slots；The second housings of 9-；10- second springs；11- sliding blocks；The first cavitys of 12-；13- valve balls；14- second
Cavity；15- limiting slots；16- fixed plates；17- valve plates；18- cutting ferrules；19- decontaminates plate；20- valve rods；21- through holes.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
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 embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, a kind of embodiment provided by the utility model：A kind of low pressure double containment gas-liquid separation check valve,
Including the second valve body 2, spool 5, the first valve body 6 and valve ball 13, one end of the first valve body 6 is provided with the second valve body 2, the second valve
The one end of one end and the first valve body 6 away from the second valve body 2 of body 2 away from the first valve body 6 is mounted on cutting ferrule 18, cutting ferrule 18 and
The junction of two valve bodies 2 and the first valve body 6 is respectively and fixedly provided with sealing rubber ring, strengthens leakproofness, the outside of cutting ferrule 18 is respectively mounted
There is attaching nut 1, side of the inside of the first valve body 6 away from the second valve body 2 is provided with the first cavity 12, and the first cavity 12 is close
The side of second valve body 2 is provided with valve ball 13, and side of the valve ball 13 away from the second valve body 2 is provided with the first housing 7, and first
The one end of housing 7 away from valve ball 13 is provided with the second housing 9, the internal diameter size phase of the outside diameter of the first housing 7 and the second housing 9
Deng easy to connect and slide, the first housing 7 is mounted on sliding block 11 close to the both sides of 9 one end of the second housing, in the second housing 9
The both sides in portion are both provided with sliding slot 8, and sliding slot 8 and sliding block 11 connect, and the inside of the second housing 9 is provided with second spring 10, and second
Spring 10 is connected close to one end of the first housing 7 and the first housing 7, all uniform on the lateral wall of the first housing 7 and the second housing 9
Through hole 21 is provided with, the inside of the first valve body 6 is provided with the second cavity 14 close to the side of the second valve body 2, the second cavity 14
Side is connected with the inside of the second valve body 2, and the opposite side of the second cavity 14 and the first cavity 12 are connected, the second cavity 14
Inside is provided with spool overcoat 4, and spool overcoat 4 is evenly arranged with inlet on the side wall away from 2 side of the second valve body, easy to medicine
Liquid enters in the first cavity 12, and the inside of spool overcoat 4 is provided with spool 5, and spool 5 is internally provided with limiting slot 15, spool
Overcoat 4 is provided with fixed plate 16 close to one end of the second valve body 2, and side of the fixed plate 16 away from spool overcoat 4 is provided with first
Spring 3, first one end of spring 3 away from spool overcoat 4 are provided with valve plate 17, side installation of the valve plate 17 away from the first spring 3
There is decontamination plate 19, decontamination plate 19 is provided with valve rod 20 close to the side of the first spring 3, outer spiral shell is provided with the lateral wall of valve rod 20
Line, the internal thread to cooperate with external screw thread is provided with the madial wall of limiting slot 15, easy to connect, while may be such that decontamination plate
19 rotations, the one end of valve rod 20 away from decontamination plate 19 are connected through valve plate 17 and fixed plate 16 with limiting slot 15.
Operation principle：The low pressure double containment gas-liquid separation check valve is installed on by chemical dosing equipment by attaching nut 1
Low pressure line in, the input terminal of the second valve body 2 is connected to the output terminal pumped on medicine machine, the output terminal of the first valve body 6
Be connected to the input terminal of gas pipeline, when the pump housing of equipment does not work, pump that pressure in the pipeline of one end is relatively low and gas pipeline
In pressure be larger, the pressure of gas pipeline makes a concerted effort to be added in the second valve body is enclosed on valve plate 17 plus the first spring 3
2, the pressure of gas pipeline makes a concerted effort to be added in the first valve body 6 is enclosed in valve ball 13 plus second spring 10, when the pump of equipment
During body running, pump can export liquid, and the pressure for exporting liquid is more than conjunction of the pressure plus the first spring 3 of gas pipeline
Power, valve plate 17 are moved into the first valve body 6 so that liquid enters in the second cavity 14 of the first valve body 6, while it is empty to enter second
The pressure of liquid in chamber 14 is more than making a concerted effort for gas pipeline and second spring 10 so that and valve ball 13 is moved to the second housing 9,
Finally so that chemical liquid enters gas pipeline, the dosing process of a frequency is completed, after one frequency of pump work, this is low
The pressure inside double containment gas-liquid separation check valve the first valve body 6 and the second valve body 2 is pressed to be balanced quickly with gas pipeline, at this time valve
Plate 17 and valve ball 13 are respectively under the action of the first spring 3 and second spring 10, the end motion to pump so that the first valve body
6 and second valve body 2 be closed, cut off the contact channel of combustion gas in side low pressure pipeline herb liquid and the gas pipeline of pump, it is real
Gas-liquid separation is showed, with a task of pump, liquid is admitted to again and again gas pipeline, low pressure double containment gas-liquid separation list
Cut off the contact of gas-liquid again and again to valve, ensure that the unidirectional normal reality of the function of dosing into gas pipeline of medicine machine
It is existing.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of the spirit or essential attributes without departing substantially from the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The scope of type is indicated by the appended claims rather than the foregoing description, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
Claims (5)
1. a kind of low pressure double containment gas-liquid separation check valve, including the second valve body (2), spool (5), the first valve body (6) and spool
Ball (13), it is characterised in that：One end of first valve body (6) is provided with the second valve body (2), and the second valve body (2) is away from the
The one end of one end of one valve body (6) and the first valve body (6) away from the second valve body (2) is mounted on cutting ferrule (18), the cutting ferrule
(18) attaching nut (1) is mounted on the outside of, side of the inside away from the second valve body (2) of first valve body (6) is set
There is the first cavity (12), and the first cavity (12) is provided with valve ball (13), the valve ball close to the side of the second valve body (2)
(13) side away from the second valve body (2) is provided with the first housing (7), and the one end of the first housing (7) away from valve ball (13)
Second housing (9) is installed, first housing (7) is mounted on sliding block (11), institute close to the both sides of the second housing (9) one end
State the internal both sides of the second housing (9) and be both provided with sliding slot (8), and sliding slot (8) and sliding block (11) connection, second housing
(9) inside is provided with second spring (10), and second spring (10) is close to one end of the first housing (7) and the first housing (7)
Through hole (21), first valve body are all evenly arranged with the lateral wall of connection, first housing (7) and the second housing (9)
(6) inside is provided with the second cavity (14), and the side of the second cavity (14) and the second valve close to the side of the second valve body (2)
The inside of body (2) is connected, and the opposite side and the first cavity (12) of the second cavity (14) are connected, second cavity (14)
Inside is provided with spool overcoat (4), and the inside of spool overcoat (4) is provided with spool (5), and the inside of the spool (5) is set
There is limiting slot (15), the spool overcoat (4) is provided with fixed plate (16), and fixed plate close to one end of the second valve body (2)
(16) side away from spool overcoat (4) is provided with the first spring (3), first spring (3) away from spool overcoat (4) one
End is provided with valve plate (17), and side of the valve plate (17) away from the first spring (3) is provided with decontamination plate (19), the decontamination plate
(19) valve rod (20) is installed close to the side of the first spring (3), and valve is run through in the one end of valve rod (20) away from decontamination plate (19)
Plate (17) and fixed plate (16) are connected with limiting slot (15).
A kind of 2. low pressure double containment gas-liquid separation check valve according to claim 1, it is characterised in that：The spool overcoat
(4) it is evenly arranged with inlet on the side wall away from the second valve body (2) side.
A kind of 3. low pressure double containment gas-liquid separation check valve according to claim 1, it is characterised in that：First housing
(7) outside diameter and the internal diameter of the second housing (9) are equal in magnitude.
A kind of 4. low pressure double containment gas-liquid separation check valve according to claim 1, it is characterised in that：The cutting ferrule (18)
Sealing rubber ring is respectively and fixedly provided with the junction of the second valve body (2) and the first valve body (6).
A kind of 5. low pressure double containment gas-liquid separation check valve according to claim 1, it is characterised in that：The valve rod (20)
Lateral wall on be provided with external screw thread, and be provided with the madial wall of limiting slot (15) with external screw thread cooperate internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720979403.4U CN207229846U (en) | 2017-08-04 | 2017-08-04 | A kind of low pressure double containment gas-liquid separation check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720979403.4U CN207229846U (en) | 2017-08-04 | 2017-08-04 | A kind of low pressure double containment gas-liquid separation check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207229846U true CN207229846U (en) | 2018-04-13 |
Family
ID=61856464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720979403.4U Expired - Fee Related CN207229846U (en) | 2017-08-04 | 2017-08-04 | A kind of low pressure double containment gas-liquid separation check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207229846U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112113011A (en) * | 2020-10-20 | 2020-12-22 | 中国电子科技集团公司第三十八研究所 | Double-sealing vacuum one-way valve |
| CN112253818A (en) * | 2020-10-20 | 2021-01-22 | 中国电子科技集团公司第三十八研究所 | Self-sealing vacuum adsorption mechanism |
| CN112483687A (en) * | 2020-12-02 | 2021-03-12 | 北京动力机械研究所 | Double-sealing one-way valve |
-
2017
- 2017-08-04 CN CN201720979403.4U patent/CN207229846U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112113011A (en) * | 2020-10-20 | 2020-12-22 | 中国电子科技集团公司第三十八研究所 | Double-sealing vacuum one-way valve |
| CN112253818A (en) * | 2020-10-20 | 2021-01-22 | 中国电子科技集团公司第三十八研究所 | Self-sealing vacuum adsorption mechanism |
| CN112113011B (en) * | 2020-10-20 | 2024-06-07 | 中国电子科技集团公司第三十八研究所 | Double-sealing vacuum one-way valve |
| CN112253818B (en) * | 2020-10-20 | 2024-06-07 | 中国电子科技集团公司第三十八研究所 | Self-sealing vacuum adsorption mechanism |
| CN112483687A (en) * | 2020-12-02 | 2021-03-12 | 北京动力机械研究所 | Double-sealing one-way valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180413 Termination date: 20180804 |