CN107883010A - Diaphragm valve - Google Patents
Diaphragm valve Download PDFInfo
- Publication number
- CN107883010A CN107883010A CN201711274174.7A CN201711274174A CN107883010A CN 107883010 A CN107883010 A CN 107883010A CN 201711274174 A CN201711274174 A CN 201711274174A CN 107883010 A CN107883010 A CN 107883010A
- Authority
- CN
- China
- Prior art keywords
- dome shape
- barrier film
- valve
- flap
- edge
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses one kind to include valve body, bonnet and valve rod, the lower end of valve rod is provided with flap and barrier film, connection through hole is offered on barrier film, the screw rod is threadedly coupled through connection through hole with flap, the screw rod upper end is threaded connection end, dome shape capping is fixed as one with screw end head made of resilient nonmetallic material, the edge of dome shape capping is pressed on barrier film, valve seat upper end in the valve body carries the dome shape pit matched with dome shape capping, the dome shape pit edge that the flap compresses downwards during barrier film on the valve seat compresses with barrier film, the dome shape capping enters in dome shape pit and is fitted close.The diaphragm valve makes barrier film and being fixedly connected for flap more firm on the premise of diaphragm seal performance is ensured.
Description
Technical field
The present invention relates to a kind of diaphragm valve.
Background technology
Conventional membrane valve, including valve body, bonnet and valve rod, the lower end of valve rod are provided with flap and barrier film, in the valve body
Be lined with fluoroplastic layer, be embedded on the barrier film and be fixed with screw rod, the flap lower end corresponds to screw rod and is threaded hole, screw rod with
Screwed hole is connected, and the edge of the barrier film is clamped on valve body by bonnet, and the stem lower portion carries annular screens portion, annular snap
The diameter in position portion is more than the diameter of valve rod mounting hole, and annular screens portion is in below valve rod mounting hole, and the valve rod above carries when institute
State the lower end that annular screens portion is stuck in valve rod mounting hole just.The flap of this diaphragm valve and the degree of being connected firmly of barrier film are poor,
Wherein screw rod, which is only embedded in barrier film, forms connection, easily disconnects.
The content of the invention
In view of insufficient existing for background technology, the technical problems to be solved by the invention are to provide a kind of diaphragm valve, should be every
The connection of the barrier film and flap of film valve is more firm and sealing property is more preferable.
The present invention is adopted the following technical scheme that to complete：Diaphragm valve, including valve body, bonnet and valve rod, under valve rod
End is provided with flap and barrier film, and the valve body is lined with fluoroplastic layer, is embedded on the barrier film and is fixed with screw rod, the flap
Lower end corresponds to screw rod and is threaded hole, and screw rod is connected with screwed hole, and the edge of the barrier film is clamped on valve body by bonnet, described
Stem lower portion carries annular screens portion, and the diameter in annular screens portion is more than the diameter of valve rod mounting hole, and annular screens portion is in valve
Below bar mounting hole, the valve rod is stuck in the lower end of valve rod mounting hole in the annular screens portion just when above carrying, on the barrier film
Connection through hole is offered, the screw rod is threadedly coupled through connection through hole with flap, and the screw rod upper end is threaded connection
End, made of resilient nonmetallic material dome shape capping be fixed as one with screw end head, dome shape cover edge be pressed on every
On film, valve seat upper end in the valve body carries dome shape pit match with dome shape capping, the flap downwards compression every
It is during dome shape pit edge during film on the valve seat is compressed with barrier film, the dome shape is covered into dome shape pit and close
Coordinate.
Connection through hole is offered in the present invention, on barrier film, the screw rod passes through connection through hole with being threadedly coupled, the screw rod
It is threadedly coupled through connection through hole with flap, dome shape capping made of resilient nonmetallic material is fixed as one with screw end head,
The edge of dome shape capping is pressed on barrier film, and the screw rod preferably can be consolidated both through the structure that barrier film is connected with flap
Fixed one.Also, screw end head dome shape capping cladding made of resilient nonmetallic material, when flap is closed downwards, ball
Planar capping can be trapped in the dome shape pit on valve seat, the bigger closed contact surfaces with dome shape pit formation, and
The structure that dome shape pit matches with dome shape capping also has guide effect, and more preferable sealing effect can be achieved.
Brief description of the drawings
The present invention has drawings described below：
Fig. 1 is the structural representation of diaphragm valve provided by the invention.
Fig. 2 is Fig. 1 close-up schematic view.
Embodiment
Accompanying drawing illustrates technical scheme and embodiment, further describes embodiment in conjunction with accompanying drawing below
Each relevant details and its operation principle.
Shown in reference picture 1, Fig. 2, diaphragm valve provided by the invention, including valve body 1, bonnet 2 and valve rod 3, the lower end of valve rod 3
Flap 4 and barrier film 5 are provided with, the valve body 1 is lined with fluoroplastic layer, is embedded on the barrier film 5 and is fixed with screw rod 6, described
The lower end of flap 4 corresponds to screw rod 6 and is threaded hole, and screw rod 6 is connected with screwed hole, and the edge of the barrier film 5 is clamped in valve by bonnet 2
On body 1, the bottom of valve rod 3 carries annular snap position portion 9, and the diameter in annular screens portion 9 is more than the diameter of valve rod mounting hole 10, ring
Shape screens portion 9 is in the lower section of valve rod mounting hole 10, and the valve rod 3 is stuck in valve rod installation in the annular screens portion 9 just when above carrying
The lower end in hole 10, logical 11 holes of connection are offered on the barrier film 5, and the screw rod 6 connects through connection through hole 11 and the screw thread of flap 4
Connect, the upper end of screw rod 6 is threaded connection end, and dome shape capping 12 made of resilient nonmetallic material is consolidated with screw end head
Fixed one, the edge of the lid of dome shape envelope 12 are pressed on barrier film 5, and the upper end of valve seat 13 in the valve body 1 carries to be sealed with dome shape
The dome shape pit 14 that lid 12 matches, the edge of dome shape pit 14 when the flap 4 compresses downwards barrier film 5 on the valve seat 13
Compressed with barrier film 5, dome shape capping 12 enters in dome shape pit 14 and is fitted close.
Shown in reference picture 2, in order to realize the sealing effect of more preferable barrier film 5, correspond to dome shape pit on the flap 4
14 edge is provided with annular snap along 15, and barrier film 5 is clamped on described by the annular snap along 15 when the flap 4 compresses barrier film 5
On the edge of dome shape pit 14.
It is right on the valve seat 13 in the valve body 1 in order to further lift the sealing effect of barrier film 5 shown in reference picture 1, Fig. 2
The dome shape capping 12 is answered to be provided with enclosed elastic block 16, the upper surface of enclosed elastic block 16 carries the arc with dome shape capping 12
The arc pit 17 of face matching.
Claims (3)
1. a kind of diaphragm valve, including valve body, bonnet and valve rod, the lower end of valve rod is provided with flap and barrier film, the valve body liner
There is fluoroplastic layer, be embedded on the barrier film and be fixed with screw rod, the flap lower end corresponds to screw rod and is threaded hole, screw rod and spiral shell
Pit is connected, and the edge of the barrier film is clamped on valve body by bonnet, and the stem lower portion carries annular screens portion, annular screens
The diameter in portion is more than the diameter of valve rod mounting hole, and annular screens portion is in below valve rod mounting hole, described in when the valve rod above carries
Annular screens portion is stuck in the lower end of valve rod mounting hole just, it is characterized in that：Connection through hole, the spiral shell are offered on the barrier film
Bar is threadedly coupled through connection through hole with flap, and the screw rod upper end is threaded connection end, and resilient nonmetallic material is made
Dome shape capping be fixed as one with screw end head, dome shape cover edge be pressed on barrier film, the valve seat in the valve body
Upper end carries the dome shape pit matched with dome shape capping, and the flap compresses downwards the dome shape on valve seat during barrier film
Pit edge compresses with barrier film, dome shape capping enters in dome shape pit and is fitted close.
2. diaphragm valve according to claim 1, it is characterized in that：Edge on the flap corresponding to dome shape pit is set
There is annular snap edge, barrier film is clamped on the edge of the dome shape pit on the annular snap edge by the flap when compressing barrier film.
3. diaphragm valve according to claim 1 or 2, it is characterized in that：The dome shape is corresponded on valve seat in the valve body
Capping is provided with enclosed elastic block, and enclosed elastic block upper surface carries the arc pit matched with the cambered surface of dome shape capping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711274174.7A CN107883010A (en) | 2017-12-06 | 2017-12-06 | Diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711274174.7A CN107883010A (en) | 2017-12-06 | 2017-12-06 | Diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107883010A true CN107883010A (en) | 2018-04-06 |
Family
ID=61772951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711274174.7A Withdrawn CN107883010A (en) | 2017-12-06 | 2017-12-06 | Diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107883010A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980404A (en) * | 2018-07-20 | 2018-12-11 | 汪建军 | A kind of valve of regulating flow quantity |
-
2017
- 2017-12-06 CN CN201711274174.7A patent/CN107883010A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980404A (en) * | 2018-07-20 | 2018-12-11 | 汪建军 | A kind of valve of regulating flow quantity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180406 |
|
| WW01 | Invention patent application withdrawn after publication |