CN208089961U - A kind of Double-clack stop valve - Google Patents
A kind of Double-clack stop valve Download PDFInfo
- Publication number
- CN208089961U CN208089961U CN201820493558.1U CN201820493558U CN208089961U CN 208089961 U CN208089961 U CN 208089961U CN 201820493558 U CN201820493558 U CN 201820493558U CN 208089961 U CN208089961 U CN 208089961U
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- valve
- flap
- gasket
- double
- fixed part
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Abstract
The utility model provides a kind of Double-clack stop valve, including valve body, valve rod and flap, wherein the flap includes big valve flap and small flap, and handwheel is arranged in described valve rod one end, and the other end is connect by ball with small flap；First gasket is set on the small flap, and the big valve flap includes valve petal body, fixed part and limiting section, and the fixed part is arranged on valve petal body, and the limiting section is arranged on the fixed part；It is provided with the second gasket on the valve petal body with the first gasket corresponding position, valve body corresponding position is provided with third gasket on the valve petal body.The utility model uses two flaps and two sealing surfaces, and sealing effect is good, and failure rate is low.
Description
Technical field
The utility model is related to a kind of valve more particularly to a kind of Double-clack stop valves.
Background technology
Valve plays the medium in the pipeline where it important function of cut-out and throttling, and shut-off valve is used as one kind extremely
Important blocks class valve, and sealing is by applying torque to valve rod, and valve rod applies pressure to flap in the axial direction, makes
Valve clack sealing surface is fitted closely with sealing surface of seat, prevents slot leakage of the medium between sealing surface.According to this of flap
Mobile form, the variation of valve seat port are and flap stroke direct proportionality.Since the valve rod of such valve is turned on and off
Stroke is relatively short, and has very reliable cutting function, and since the variation of valve seat port and the stroke of flap are at just
Proportionate relationship is very suitable for the adjusting to flow.Existing shut-off valve sealing effect is poor, and easily right in frequent Open valve
Flap causes mechanical damage.
Utility model content
In view of this, the utility model provides a kind of Double-clack stop valve, using two flaps and two sealing surfaces, sealing
Effect is good, and failure rate is low.
The utility model uses following technical scheme：
A kind of Double-clack stop valve, including valve body, valve rod and flap, wherein the flap includes big valve flap and small flap,
Handwheel is arranged in described valve rod one end, and the other end is connect by ball with small flap；First gasket, institute are set on the small flap
It includes valve petal body, fixed part and limiting section to state big valve flap, and the fixed part is arranged on valve petal body, and the limiting section is arranged in institute
It states on fixed part；Be provided with the second gasket on the valve petal body with the first gasket corresponding position, on the valve petal body with valve
Body corresponding position is provided with third gasket.
Preferably, it is provided with balance hole on the fixed part.
Preferably, first gasket is hard alloy gasket.
Preferably, second gasket is hard alloy gasket.
Preferably, the third gasket is polytetrafluoroethylene sealing gasket.
Preferably, the internal diameter of the limiting section is less than the transverse width of the small flap.
The beneficial effects of the utility model are：
The utility model uses two flaps and two sealing surfaces, big valve flap sealing surface to use polytetrafluoroethylene (PTFE) soft seal,
Small flap is sealed using hard alloy, ensure that the sealing performance of valve.Balance hole is set on the fixed part of big valve flap simultaneously,
When valve has buffer brake unlatching, valve rod first drives small flap to open, and passes through the balance hole balance pressure on big valve flap after unlatching
Power, unlatching big valve flap easily and will not more cause to damage to flap after pressure balance.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
In figure：1- valve bodies, 2- valve rods, 3- limiting sections, 4- fixed parts, 5- balance holes, the first gaskets of 6-, 7- balls, 8-
Small flap, the second gaskets of 9-, 10- valve petal bodies, 11- third gaskets.
Specific implementation mode
As shown in Figure 1, the utility model provides a kind of Double-clack stop valve, including valve body 1, valve rod 2 and flap, flap packet
Big valve flap and small flap 8 are included, handwheel is arranged in 3 one end of valve rod, and the other end is connect by ball 7 with small flap 8.It is set on small flap 8
The first gasket 6 is set, big valve flap includes valve petal body 10, fixed part 4 and limiting section 3, and fixed part 4 is arranged on valve petal body 10, limit
Position portion 3 is arranged on the fixed part 4.First gasket, 6 corresponding position is provided with the second gasket 9, valve on valve petal body 10
1 corresponding position of valve body is provided with third gasket 11 on valve body 10.The internal diameter of limiting section 3 is less than the transverse width of small flap 8,
The displacement of flap is limited.
The utility model includes two flaps of big valve flap and small flap, and the second gasket 9 on big valve flap, on small flap
The first gasket 6 be hard alloy gasket, big valve flap with to be also provided with polytetrafluoroethylene (PTFE) on 1 corresponding position of valve body close
Packing, the utility model combine the hard sealing of hard alloy with the soft seal of polytetrafluoroethylene (PTFE), further improve valve
The sealing performance of door avoids medium leakage from causing safety accident.
Balance hole 5 is provided on the fixed part 4 of the utility model, big valve flap sealing surface uses polytetrafluoroethylene (PTFE) soft seal,
Small flap 8 is sealed using hard alloy, and when valve has buffer brake unlatching, valve rod 2 first drives small flap 8 to open, after unlatching
Pressure is balanced by the balance hole 5 on big valve flap, unlatching big valve flap easily and will not more cause to damage to flap after pressure balance.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
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 (6)
1. a kind of Double-clack stop valve, including valve body, valve rod and flap, it is characterised in that：The flap includes big valve flap and small
Handwheel is arranged in flap, described valve rod one end, and the other end is connect by ball with small flap；The first sealing of setting on the small flap
Pad, the big valve flap include valve petal body, fixed part and limiting section, and the fixed part is arranged on valve petal body, and the limiting section is set
It sets on the fixed part；The first gasket corresponding position is provided with the second gasket, the valve petal body on the valve petal body
Upper and valve body corresponding position is provided with third gasket.
2. a kind of Double-clack stop valve according to claim 1, it is characterised in that：Balance is provided on the fixed part
Hole.
3. a kind of Double-clack stop valve according to claim 1, it is characterised in that：First gasket is hard alloy
Gasket.
4. a kind of Double-clack stop valve according to claim 3, it is characterised in that：Second gasket is hard alloy
Gasket.
5. a kind of Double-clack stop valve according to claim 1, it is characterised in that：The third gasket is polytetrafluoroethyl-ne
Alkene gasket.
6. a kind of Double-clack stop valve according to claim 1, it is characterised in that：The internal diameter of the limiting section is less than described
The transverse width of small flap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820493558.1U CN208089961U (en) | 2018-04-09 | 2018-04-09 | A kind of Double-clack stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820493558.1U CN208089961U (en) | 2018-04-09 | 2018-04-09 | A kind of Double-clack stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208089961U true CN208089961U (en) | 2018-11-13 |
Family
ID=64058530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820493558.1U Active CN208089961U (en) | 2018-04-09 | 2018-04-09 | A kind of Double-clack stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208089961U (en) |
-
2018
- 2018-04-09 CN CN201820493558.1U patent/CN208089961U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |