CN209430783U - A kind of double-sealed stop valve - Google Patents
A kind of double-sealed stop valve Download PDFInfo
- Publication number
- CN209430783U CN209430783U CN201821970305.5U CN201821970305U CN209430783U CN 209430783 U CN209430783 U CN 209430783U CN 201821970305 U CN201821970305 U CN 201821970305U CN 209430783 U CN209430783 U CN 209430783U
- Authority
- CN
- China
- Prior art keywords
- valve
- flap
- conical surface
- valve seat
- anchor ring
- 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- Withdrawn - After Issue
Links
- 230000000295 complement effect Effects 0.000 claims abstract description 5
- 210000004894 snout Anatomy 0.000 claims description 16
- 230000008676 import Effects 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 13
- 230000004069 differentiation Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 34
- 239000012535 impurity Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 230000006837 decompression Effects 0.000 abstract description 2
- 238000004080 punching Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005552 hardfacing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a kind of double-sealed stop valves, valve seat includes the valve seat conical surface and the valve seat anchor ring along the setting of flap moving direction, flap includes the flap conical surface and the flap anchor ring along the setting of flap moving direction, the valve seat conical surface and the flap conical surface complement each other to form conical surface seal pair, valve seat anchor ring and flap anchor ring complement each other to form face seal pair, conical surface seal pair is more closely to outlet plenum side for face seal pair.With dual-seal auxiliary structure, in valve closing process, face seal pair rate is initially formed sealing, plays the effect of decompression throttling in advance, to block impurity to enter the region of conical surface seal pair, a small amount of medium punching after recycling throttling is swept, and so that sealing surface is obtained automatically cleaning, is effectively prevented impurity and stay on sealing surface, simultaneously, it effectively solves the problems, such as that valve is not closed completely or weighs wounded sealing surface, also avoids high-speed Medium and sealing surface is washed away, considerably increase the functional reliability of shut-off valve.
Description
Technical field
The utility model relates to a kind of shut-off valve, in particular to a kind of double-sealed stop valve.
Background technique
The opening and closing element of shut-off valve is the flap of stopper, and sealing is above in plane or the extra large conical surface, center line of the flap along valve seat
It is for linear motion.Nowadays the shut-off valve used, the sealing surface that valve seat only seals together are situated between when the valve is closed
The pressure difference of matter concentrates on sealing surface entirely, therefore medium is larger to the scouring force of sealing surface of seat, to accelerate sealing surface of seat
Abrasion, reduce its service life.In addition, table structure has ignored damage of the solid particle to sealing surface in medium mostly.Impurity
In contain many solid particles, when the valve is closed, particle is easily clipped between sealing surface, weighs sealing surface wounded or valve is caused to close
It closes not tight, causes high-speed Medium to wash away sealing surface for a long time, cause valves leakage.
Summary of the invention
The purpose of this utility model: in order to overcome the drawbacks of the prior art, the utility model provides a kind of with double density
The double-sealed stop valve of seal structure, antiscour.
The technical solution of the utility model includes: including valve body, valve rod and valve seat, the valve rod is equipped with flap, described
Valve rod penetrates in valve body, described equipped with snout cavity, outlet plenum and the connecting cavity for being connected to snout cavity and outlet plenum in the valve body
Valve seat is installed in connecting cavity, the valve seat include the valve seat conical surface and along flap moving direction be arranged valve seat anchor ring,
The flap includes the flap conical surface and the flap anchor ring along the setting of flap moving direction, and the valve seat conical surface and flap are bored
Face complements each other to form conical surface seal pair, and the valve seat anchor ring and flap anchor ring complement each other to form face seal pair, the cone
Face sealing pair is more closely to outlet plenum side for face seal pair.
By adopting the above technical scheme, there is dual-seal auxiliary structure, in valve closing process, face seal pair rate is initially formed
It seals, plays the effect of decompression throttling in advance, so that impurity be blocked to enter the region of conical surface seal pair, recycle after throttling
The region that conical surface seal pair is swept in a small amount of medium punching makes sealing surface obtain automatically cleaning, effectively prevents to take away the impurity in the region
Impurity stays on sealing surface, meanwhile, face seal pair reduces the pressure difference of conical surface seal pair, is also beneficial to extend sealing pair use
Service life effectively solves the problems, such as that valve is not closed completely or weighs wounded sealing surface, also avoids high-speed Medium and wash away to sealing surface, greatly
The functional reliability of shut-off valve is increased greatly.
The further setting of the utility model: the valve seat conical surface and valve seat anchor ring and the flap conical surface and flap anchor ring are one
It is body formed.
Using above-mentioned further setting, convenient for manufacture and processing.
The further setting of the utility model: antiscour part is provided at snout cavity.
Further it is arranged using above-mentioned, reduces the flow velocity of high-speed Medium, avoids washing away sealing surface.
The further setting again of the utility model: antiscour part includes import department, middle part and outlet portion, described
The centre bore through import department, middle part and outlet portion three is provided in antiscour part；In the import department, outlet portion
Multiple circular centre bores are offered in shaft orientation flowing channel circumferentially, the axis direction of the shaft orientation flowing channel and the axis of centre bore
Direction is consistent；Have outside the middle part outer wall and flow into the annular groove that medium passes through for shaft orientation flowing channel, is offered in the middle part
Multiple radial flow paths, the axis direction of the axis direction of the radial flow path perpendicular to centre bore, and radial flow path connected ring
Slot and centre bore, multiple radial flow paths are in circumferential direction and axial alignment around centre bore.
Using above-mentioned setting further again, the flow of snout cavity can be reduced, velocity of medium is reduced, avoids high-speed Medium
Sealing surface is washed away.
The further setting again of the utility model: being fixedly installed with valve cage in connecting cavity, under valve-closed state, institute
Flap is stated to penetrate in valve cage and form sealing with valve seat.
Using above-mentioned setting further again, valve cage can play the role of positioning and guiding to flap, prevent flap by
Medium impulse force and it is eccentric, it is ensured that the concentricity of valve rod.
The further setting again of the utility model: the cylindrical structure of valve cage, to be to distinguish through the plane of valve cage axis
Face, the valve cage include positioned at the through-hole section for distinguishing left side of face and positioned at the solid wall portion for distinguishing right side of face, the through-hole section
On offer it is multiple connection valve cages inside and outside through-holes, the solid wall portion is installed in face of snout cavity side.
Using above-mentioned setting further again, medium flows through solid wall part, substantially lowers velocity of medium, it is straight to be also prevented from medium
Face rushes at sealing surface, has further consolidated the anti-impact brushing effects of sealing surface.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model specific embodiment；
Fig. 2 is the partial enlarged view in the utility model Fig. 1 at A；
Fig. 3 is the enlarged diagram at the utility model open state lower sealing surface；
Fig. 4 is the structural schematic diagram of the utility model antiscour part；
Wherein, valve body 1, valve rod 2, valve seat 3, flap 4, snout cavity 11, outlet plenum 12, connecting cavity 13, the valve seat conical surface 31, valve
Seat ring face 32, the flap conical surface 41, flap anchor ring 42, antiscour part 5, import department 51, middle part 52, outlet portion 53, centre bore 54,
Shaft orientation flowing channel 511, annular groove 521, radial flow path 522, valve cage 6, through-hole section 61, solid wall portion 62, through-hole 611.
Specific embodiment
A kind of double-sealed stop valve as shown in FIG. 1 to FIG. 3 includes valve body 1, valve rod 2 and valve seat 3, sets on valve rod 1
There is flap 4, valve rod 2 penetrates in valve body 1, and snout cavity 11, outlet plenum 12 and connection snout cavity 11 and outlet plenum are equipped in valve body 1
12 connecting cavity 13, valve seat 3 are installed in connecting cavity 13, and valve seat 3 includes the valve seat conical surface 31 and along 4 moving direction of flap
The valve seat anchor ring 32 of setting, flap 4 include the flap conical surface 41 and along 4 moving direction of flap be arranged flap anchor ring 42,
The valve seat conical surface 31 and the flap conical surface 41 complement each other to form conical surface seal pair, valve seat anchor ring 32 and 42 mutual cooperation shape of flap anchor ring
At anchor ring sealing pair, conical surface seal pair is more closely to 12 side of outlet plenum, for face seal pair with integral valve
For the perpendicular dress of door, conical surface seal pair is located at the lower section of face seal pair.Face seal is secondary, conical surface seal pair is face sealing, mentions
High sealing performance.Flap anchor ring 42, valve seat anchor ring 32 and 2 axis coaxle of valve rod are arranged.The valve seat conical surface 31 and valve seat anchor ring 32
And the flap conical surface 41 and flap anchor ring 42 are integrally formed, it is more convenient during fabrication.The flap conical surface 31, flap anchor ring
32, the valve seat conical surface 41, valve seat anchor ring 42 are made of hardfacing alloy.
In valve closing process, flap 4 moves down under the action of valve rod 2, and flap 4 protrudes into valve seat 3, makes valve seat
Anchor ring 42 is close to each other in advance with flap anchor ring 32 and forms face seal pair, has blocked the circulation of medium substantially, impurity is difficult to
It enters back into the region of the secondary lower section of face seal, a small amount of medium belt after recycling throttling walks the medium in above-mentioned zone, then
Valve rod continues to move down, so that the valve seat conical surface 41 and the flap conical surface 31 form conical surface seal pair, avoids damage of the impurity to sealing surface,
Realize the effect of double containment and antiscour.
As shown in figure 4, being fixedly installed with antiscour part 5 at snout cavity 11；Section of the antiscour part 5 through its axis is in " work "
Font comprising have import department 51, middle part 52 and outlet portion 53, be provided in antiscour part 5 through import department 51, centre
The centre bore 54 of 53 three of portion 52 and outlet portion；Multiple circular centre bores 54 are offered in import department 51, outlet portion 52 is in
The axis direction of shaft orientation flowing channel 511 circumferentially, shaft orientation flowing channel 511 is consistent with the axis direction of centre bore 54；Middle part 52
Have outside outer wall and flow into the annular groove 521 that medium passes through for shaft orientation flowing channel 511, offers multiple radial flow paths 522 in middle part 52,
The axis direction of radial flow path 522 perpendicular to centre bore 54 axis direction, and radial flow path 522 be connected to annular groove 521 and in
Heart hole 54, multiple radial flow paths 522 are in circumferential direction and axial alignment around centre bore 54, i.e., around 54 circumferential position of centre bore
Middle part on open up multiple radial flow paths 522, in addition opening up multiple radial flows on 54 axial position of centre bore
Road 522.The flow velocity for reducing high-speed Medium, avoids washing away sealing surface.Medium flows into snout cavity 11, and medium flows into centre bore
54 and import department 51 shaft orientation flowing channel 511, the medium for flowing through the shaft orientation flowing channel 511 of import department 51 enters annular groove 521, radial flow
Road 522 provides centre bore 54 and the flow of media channel of annular groove 521 between the two, upsets Jie in centre bore 54 and annular groove 521
Mass flow moves rhythm, reduces velocity of medium, reduces the flow of medium, high-speed Medium is avoided to wash away sealing surface, this is practical
The novel occasion for being especially suitable for high-speed Medium.
Valve cage 6 is fixedly installed in connecting cavity 13, under valve-closed state, flap 4 penetrate in valve cage 6 and with valve seat 3
Form sealing.The cylindrical structure of valve cage 6, using the plane through 6 axis of valve cage as differentiation face, valve cage 6 includes positioned at differentiation face
It the through-hole section 61 in left side and is offered inside and outside multiple connection valve cages 6 positioned at the solid wall portion 62 for distinguishing right side of face, in through-hole section 61
Through-hole 611, and be in 6 radial direction of valve cage.When valve cage 6 is installed, the installation of solid wall portion 62 is right against 11 side of snout cavity, is made
Face 11 media impingement of snout cavity directly in solid wall portion 62.During snout cavity 11 enters medium, medium directly impacts solid wall portion 62, is situated between
Matter is since the arc surface in solid wall portion 62 shunts, and 611 detour of via through holes enters in valve cage 6, separates medium to the straight of sealing surface
Face impact, anti-impact brushing effects are more significant.
Claims (6)
1. a kind of double-sealed stop valve includes valve body, valve rod and valve seat, the valve rod is equipped with flap, and the valve rod is worn
Enter in valve body, equipped with snout cavity, outlet plenum and the connecting cavity for being connected to snout cavity and outlet plenum, the valve seat peace in the valve body
Loaded in connecting cavity, it is characterised in that: the valve seat includes the valve seat conical surface and the valve seat along the setting of flap moving direction
Anchor ring, the flap include the flap conical surface and along flap moving direction be arranged flap anchor ring, the valve seat conical surface with
The flap conical surface complements each other to form conical surface seal pair, and the valve seat anchor ring and flap anchor ring complement each other to form face seal pair,
The conical surface seal pair is more closely to outlet plenum side for face seal pair.
2. a kind of double-sealed stop valve according to claim 1, it is characterised in that: the valve seat conical surface and valve seat anchor ring with
And the flap conical surface and flap anchor ring are integrally formed.
3. a kind of double-sealed stop valve according to claim 1 or 2, it is characterised in that: be provided at the snout cavity anti-
Wash away part.
4. a kind of double-sealed stop valve according to claim 3, it is characterised in that: the antiscour part includes import
Portion, middle part and outlet portion are provided with through the center of import department, middle part and outlet portion three in the antiscour part
Hole；Multiple circular centre bores are offered in the import department, outlet portion in shaft orientation flowing channel circumferentially, the shaft orientation flowing channel
Axis direction it is consistent with the axis direction of centre bore；Have outside the middle part outer wall and flows into what medium passed through for shaft orientation flowing channel
Annular groove, offers multiple radial flow paths in the middle part, the axis of the axis direction of the radial flow path perpendicular to centre bore
Direction, and radial flow path connection annular groove and centre bore, multiple radial flow paths are in circumferential direction and axial alignment around centre bore.
5. a kind of double-sealed stop valve according to claim 1 or 2, it is characterised in that: be fixedly mounted in the connecting cavity
There is valve cage, under valve-closed state, the flap is penetrated in valve cage and formed with valve seat and sealed.
6. a kind of double-sealed stop valve according to claim 5, it is characterised in that: the cylindrical structure of valve cage, with
Plane through valve cage axis is differentiation face, and the valve cage includes positioned at the through-hole section for distinguishing left side of face and to be located at the differentiation face right side
The solid wall portion of side offers the through-holes inside and outside multiple connection valve cages in the through-hole section, and the solid wall portion is installed in face of import
Chamber side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821970305.5U CN209430783U (en) | 2018-11-27 | 2018-11-27 | A kind of double-sealed stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821970305.5U CN209430783U (en) | 2018-11-27 | 2018-11-27 | A kind of double-sealed stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209430783U true CN209430783U (en) | 2019-09-24 |
Family
ID=67968337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821970305.5U Withdrawn - After Issue CN209430783U (en) | 2018-11-27 | 2018-11-27 | A kind of double-sealed stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209430783U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442054A (en) * | 2018-11-27 | 2019-03-08 | 浙江双华阀门科技有限公司 | A kind of double-sealed stop valve |
| WO2023160709A1 (en) * | 2022-02-25 | 2023-08-31 | 浙江盾安人工环境股份有限公司 | Flow adjustment assembly and electronic expansion valve |
-
2018
- 2018-11-27 CN CN201821970305.5U patent/CN209430783U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442054A (en) * | 2018-11-27 | 2019-03-08 | 浙江双华阀门科技有限公司 | A kind of double-sealed stop valve |
| CN109442054B (en) * | 2018-11-27 | 2024-03-29 | 浙江双华阀门科技有限公司 | Double-seal stop valve |
| WO2023160709A1 (en) * | 2022-02-25 | 2023-08-31 | 浙江盾安人工环境股份有限公司 | Flow adjustment assembly and electronic expansion valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190924 Effective date of abandoning: 20240329 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190924 Effective date of abandoning: 20240329 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |