CN208364847U - A kind of vapour-pressure type diaphragm valve - Google Patents
A kind of vapour-pressure type diaphragm valve Download PDFInfo
- Publication number
- CN208364847U CN208364847U CN201820867199.1U CN201820867199U CN208364847U CN 208364847 U CN208364847 U CN 208364847U CN 201820867199 U CN201820867199 U CN 201820867199U CN 208364847 U CN208364847 U CN 208364847U
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- CN
- China
- Prior art keywords
- valve
- flap
- diaphragm
- spool
- vapour
- 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.)
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Abstract
A kind of vapour-pressure type diaphragm valve of the utility model, including valve seat, valve bonnet is connected on valve seat, it is provided with diaphragm between valve bonnet and valve seat, flap is provided in valve bonnet, is connected with spool on flap, the valve bonnet includes valve chamber and valve platform, flap is slideably positioned in valve chamber, and is sealed between flap and valve chamber inner wall, and the profile of flap towards the side of diaphragm is consistent with diaphragm；Spool is slidably arranged in valve platform, and is sealed between spool and valve platform；Flap is less than the air pressure of the flap other side close to the air pressure of diaphragm side；The valve opening device for extracting spool out outward is provided on the outside of valve platform.The utility model can greatly reduce the damage to diaphragm, to extend the service life of diaphragm valve.
Description
Technical field
The utility model belongs to diaphragm valve field more particularly to a kind of vapour-pressure type diaphragm valve.
Background technique
Conventional membrane valve, including valve body, valve deck and valve rod, the lower end of valve rod are provided with flap and diaphragm, in the valve body
Be lined with fluoroplastic layer, be embedded in and be fixed with screw rod on the diaphragm, the flap lower end corresponds to screw rod with threaded hole, screw rod with
Threaded hole connection, the edge of the diaphragm are clamped on valve body by valve deck, and the stem lower portion has annular detent portion, annular snap
The diameter in position portion is greater than the diameter of valve rod mounting hole, and annular detent portion is in below valve rod mounting hole, and the valve rod above mentions when institute
State the lower end that annular detent portion is stuck in valve rod mounting hole just.The flap of this diaphragm valve and the firmness of the connection of diaphragm are poor,
Wherein screw rod, which is only embedded in diaphragm, forms connection, is easy to disconnect.
Notification number is that the Chinese patent of CN107883010A discloses a kind of diaphragm valve, including valve body, valve deck and valve rod, valve
The lower end of bar is provided with flap and diaphragm, and the valve body is lined with fluoroplastic layer, screw rod is embedded in and be fixed on the diaphragm,
The flap lower end corresponds to screw rod with threaded hole, and screw rod is connect with threaded hole, and the edge of the diaphragm is clamped in valve by valve deck
On body, the stem lower portion has annular detent portion, and the diameter in annular detent portion is greater than the diameter of valve rod mounting hole, annular snap
Position portion is in below valve rod mounting hole, and the valve rod is stuck in the lower end of valve rod mounting hole in the annular detent portion when above mentioning just,
It is characterized in that: offering connection through-hole on the diaphragm, the screw rod passes through connection through-hole and is threadedly coupled with flap, the spiral shell
Bar upper end has threaded ends, and the capping of dome shape made of resilient nonmetallic material is fixed as one with screw end head, spherical surface
The edge of shape capping is pressed on diaphragm, and the intracorporal valve seat upper end of valve has recessed with the matched dome shape of dome shape capping
Hole, the flap compresses dome shape pit edge when diaphragm on the valve seat downwards and diaphragm compresses, the dome shape covers
Into in dome shape pit and being fitted close.
This diaphragm valve has the disadvantage that flap is fixed by the capping of the dome shape of screw rod and screw rod end with diaphragm,
Since diaphragm is flexible material, under long-time service, dome shape capping will cause not recoverable damage to the junction of diaphragm,
Serious ash causes diaphragm to be detached from the fixation that dome shape covers, so as to cause leakage.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of vapour-pressure type diaphragm for the deficiency of background technique
Valve can greatly reduce the damage to diaphragm, to extend the service life of diaphragm valve.
The utility model uses following technical scheme to solve above-mentioned technical problem:
A kind of vapour-pressure type diaphragm valve, including valve seat are connected with valve bonnet on valve seat, diaphragm are provided between valve bonnet and valve seat,
It is provided with flap in valve bonnet, spool is connected on flap, the valve bonnet includes valve chamber and valve platform, and flap is slideably positioned in valve chamber
It is interior, and sealed between flap and valve chamber inner wall, the profile of flap towards the side of diaphragm is consistent with diaphragm；Spool sliding setting
It is sealed in valve platform, and between spool and valve platform；Flap is less than the air pressure of the flap other side close to the air pressure of diaphragm side；Valve
The valve opening device for extracting spool out outward is provided on the outside of platform.
Further, the valve opening device includes the compression bar being axially arranged along spool for being hinged on valve platform two sides, compression bar
One end is provided with toothed disc, and the spool is provided with external screw thread far from one end of flap, and the external screw thread and toothed disc are mutually nibbled
It closes.
Further, the compression bar is provided with hook far from one end of toothed disc, and valve platform two sides are provided with a make-up
Ring, when compression bar is pressed towards retaining ring, toothed disc engagement external screw thread spool is extracted out, and hook will move closer to retaining ring and with
Retaining ring mutually fastens.
Further, the flap side is arranged with sealing ring.
Further, the flap side is provided with T-slot, and the sealing ring includes the T-type portion being embedded in T-slot,
It is circular sealing that section is connected in the T-type portion.
Further, the diaphragm is coated with erosion shield far from the side of flap.
Further, the erosion shield is polyolefin coating.
The utility model compared with the prior art by using the above technical solution, has following technical effect that
When the utility model Open valve, by press down on two compression bars by toothed disc and external screw thread engaged transmission, from
And spool is lifted up.Space between diaphragm and flap becomes larger, and pressure becomes smaller, so that diaphragm can be by the liquid in water inlet
It washes open, realizes valve opening.Hook is hooked in retaining ring after pressing down on and is fixed by compression bar, so that valve be kept to be in normally opened shape
State.It is easy to operate, it is connectionless between flap and diaphragm, so as to avoid the damage to diaphragm, extend the service life of valve.
Detailed description of the invention
Fig. 1 is the structural schematic diagram under the present embodiment closed state；
Fig. 2 is the structural schematic diagram under the present embodiment open state.
In figure, 1, valve seat；11, water inlet；12, water outlet；2, valve bonnet；201, valve chamber；202, valve platform；21, flap；211,
T-slot；22, spool；221, external screw thread；23, compression bar；231, toothed disc；232, hook；24, retaining ring；25, sealing ring；251, close
Envelope portion；252, T-type portion；3, diaphragm.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawing:
A kind of vapour-pressure type diaphragm valve is provided with water inlet 11 and water outlet on valve seat 1 as illustrated in fig. 1 and 2, including valve seat 1
12, valve bonnet 2 is connected on valve seat 1, and diaphragm 3 is provided between valve bonnet 2 and valve seat 1, flap 21, flap 21 are provided in valve bonnet 2
On be connected with spool 22, valve bonnet 2 includes valve chamber 201 and valve platform 202, and flap 21 is slideably positioned in valve chamber 201, and flap 21
It is sealed between 201 inner wall of valve chamber, the profile and diaphragm 3 of flap 21 towards the side of diaphragm 3 are consistent；Spool 22 is slidably arranged in
In valve platform 202, and sealed between spool 22 and valve platform 202；It is another that air pressure of the flap 21 close to 3 side of diaphragm is less than flap 21
The air pressure of side；The valve opening device for extracting spool 22 out outward is provided on the outside of valve platform 202.
Valve opening device includes the compression bar 23 being axially arranged along spool 22 for being hinged on 202 two sides of valve platform, 23 one end of compression bar
It is provided with toothed disc 231, the spool 22 is provided with external screw thread 221, the external screw thread 221 and gear far from one end of flap 21
Disk 231 is intermeshed.
Compression bar 23 is provided with hook 232 far from one end of toothed disc 231, and 202 two sides of valve platform are provided with a pair of of retaining ring
24, when compression bar 23 is pressed towards retaining ring 24, toothed disc 231 engages external screw thread 221 and extracts spool 22 out, and hook 232 will
It moves closer to retaining ring 24 and is mutually fastened with retaining ring 24.
21 side of flap is arranged with sealing ring 25.21 side of flap is provided with T-slot 211, and the sealing ring 25 includes embedding
T-type portion 252 in T-slot 211, it is circular sealing 251 that section is connected in the T-type portion 252.
Diaphragm 3 is coated with erosion shield far from the side of flap 21.Erosion shield is polyolefin coating.
Specific implementation explanation:
When Open valve, toothed disc 231 and the engaged transmission of external screw thread 221 are allowed by pressing down on two compression bars 23, thus
Spool 22 is lifted up.Space between diaphragm 3 and flap 21 becomes larger, and pressure becomes smaller, so that diaphragm 3 can be by water inlet 11
Liquid wash open, realize valve opening.Hook 232 is hooked in retaining ring 24 after pressing down on and is fixed by compression bar 23, to keep valve
Door is in normally open.
When closing valve, hook 232 is detached to from retaining ring 24 and is unclamped compression bar 23, allows the air pressure of the top of flap 21 by valve
Valve 21 pushes, and until diaphragm 3 to be pressed at water inlet 11 and water outlet 12, water inlet 11 and water outlet 12 is isolated, pass is reached
The purpose of valve closing door.
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the utility model fields
Justice.It should also be understood that those terms such as defined in the general dictionary should be understood that with upper with the prior art
The consistent meaning of meaning hereinafter, and unless defined as here, will not with idealization or meaning too formal come
It explains.
Above embodiments are only to illustrate the technical idea of the utility model, and the protection model of the utility model cannot be limited with this
Enclose, it is all according to the utility model proposes technical idea, any changes made on the basis of the technical scheme each falls within this reality
Within the scope of novel protected.The embodiments of the present invention is explained in detail above, but the utility model is not
It is limited to above embodiment, within the knowledge of a person skilled in the art, can also be or else detached from practical
It is made a variety of changes under the premise of novel objective.
Claims (7)
1. a kind of vapour-pressure type diaphragm valve, including valve seat, it is connected with valve bonnet on valve seat, diaphragm, valve are provided between valve bonnet and valve seat
It is provided with flap in cover, is connected with spool on flap, it is characterised in that: the valve bonnet includes valve chamber and valve platform, and flap sliding is set
It is placed in valve chamber, and is sealed between flap and valve chamber inner wall, the profile of flap towards the side of diaphragm is consistent with diaphragm；Spool
It is slidably arranged in valve platform, and is sealed between spool and valve platform；Air pressure of the flap close to diaphragm side is less than the flap other side
Air pressure；The valve opening device for extracting spool out outward is provided on the outside of valve platform.
2. a kind of vapour-pressure type diaphragm valve according to claim 1, it is characterised in that: the valve opening device includes being hinged on valve
The compression bar of platform two sides being axially arranged along spool, compression bar one end are provided with toothed disc, and the spool is set far from one end of flap
It is equipped with external screw thread, the external screw thread and toothed disc intermeshing.
3. a kind of vapour-pressure type diaphragm valve according to claim 2, it is characterised in that: the one end of the compression bar far from toothed disc
It is provided with hook, valve platform two sides are provided with a pair of of retaining ring, and when compression bar is pressed towards retaining ring, toothed disc engages external screw thread
Spool is extracted out, and hook will move closer to retaining ring and mutually fasten with retaining ring.
4. a kind of vapour-pressure type diaphragm valve according to claim 1, it is characterised in that: the flap side is arranged with sealing
Circle.
5. a kind of vapour-pressure type diaphragm valve according to claim 4, it is characterised in that: the flap side is provided with T-slot,
The sealing ring includes the T-type portion being embedded in T-slot, and it is circular sealing that section is connected in the T-type portion.
6. a kind of vapour-pressure type diaphragm valve according to claim 1, it is characterised in that: the diaphragm is applied far from the side of flap
It is covered with erosion shield.
7. a kind of vapour-pressure type diaphragm valve according to claim 6, it is characterised in that: the erosion shield is polyolefin painting
Layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820867199.1U CN208364847U (en) | 2018-06-05 | 2018-06-05 | A kind of vapour-pressure type diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820867199.1U CN208364847U (en) | 2018-06-05 | 2018-06-05 | A kind of vapour-pressure type diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208364847U true CN208364847U (en) | 2019-01-11 |
Family
ID=64931772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820867199.1U Expired - Fee Related CN208364847U (en) | 2018-06-05 | 2018-06-05 | A kind of vapour-pressure type diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208364847U (en) |
-
2018
- 2018-06-05 CN CN201820867199.1U patent/CN208364847U/en not_active Expired - Fee Related
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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: 20190111 Termination date: 20190605 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |