CN202203421U - Needle-shaped stop valve - Google Patents
Needle-shaped stop valve Download PDFInfo
- Publication number
- CN202203421U CN202203421U CN2011203360532U CN201120336053U CN202203421U CN 202203421 U CN202203421 U CN 202203421U CN 2011203360532 U CN2011203360532 U CN 2011203360532U CN 201120336053 U CN201120336053 U CN 201120336053U CN 202203421 U CN202203421 U CN 202203421U
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- valve
- aciculiform
- flap
- needle
- sealing
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Abstract
The utility model relates to a needle-shaped stop valve including a valve body, a valve cover, a valve stem and a needle-shaped valve clack, a valve cavity is arranged in the valve body, the needle-shaped valve clack for controlling the on/off of the valve cavity is arranged inside the valve cavity, the needle-shaped valve clack includes a connecting end and a needle-shaped sealing end sealingly cooperated with the valve cavity, the needle point of the needle-shaped sealing end faces the bottom of the valve cavity, the valve stem is inserted in the installing hole which is arranged in the middle of the valve cover, one end of the valve stem is connected to the needle-shaped valve clack, the other end of the valve stem is provided with a hand wheel, hard sealing layers which are mutually in a sealing cooperation are arranged on the needle-shaped sealing end of the needle-shaped valve clack and the cooperative surface of the valve cavity inner wall and the needle-shaped sealing end, one end of the inner hole of the valve cover, close to the hand wheel, is provided with a sealing ring installation seat, a sealing ring is arranged on the installing seat, one side of the sealing ring is tightly sealed to the valve steam, and the other side of the sealing ring is tightly sealed to the valve cover. Compared with the prior art, the sealing between the valve clack and the valve stem is more reliable, the service lifetime of the sealing layer is longer, and the operation of the valve stem is simpler and more flexible.
Description
Technical field
The utility model relates to valve technology field, is specifically related to a kind of stop valve, particularly relates to a kind of aciculiform stop valve.
Background technique
Advantages such as the aciculiform stop valve has simple in structurely because of it, makes, maintenance is more convenient, and the little and opening and closing time of working stroke is short are widely used in the pipeline.Shown in accompanying drawing 1, existing aciculiform stop valve generally comprise the valve body that is provided with the outlet of water into, with valve gap, valve rod and aciculiform flap that valve body removably connects, be provided with the valve pocket that is communicated with intake-outlet in the valve body; Be provided with the aciculiform flap in the valve pocket, valve pocket includes uuper valve chamber that communicates with water intake and the lower valve chamber that communicates with water outlet, and the sealing surface of aciculiform flap and upper and lower valve pocket joint is sealed and matched; Valve rod is inserted in the mounting hole that is provided with in the middle part of the valve gap, and valve rod one end and aciculiform flap flexibly connect, and the other end is equiped with handwheel; Valve gap is provided with Stuffing box in the mounting hole of an end of handwheel; Fill out fillers such as being provided with Expanded graphite in the Stuffing box, be used for the sealing of valve rod, and be provided with gland towards an end of handwheel at filler; Gland compresses filler through gland nut, the screw-thread fit on gland nut and the valve gap outer wall.
There is following defective in the aciculiform stop valve of said structure: 1, valve rod is through filler and valve gap formation sealings such as Expanded graphites; When valve rod rotated, filler had bigger resistance to valve rod, made the valve rod operation dumb; The labor intensity of operation is bigger; Especially the active force of medium is bigger when throttle down, and valve rod rotates difficulty more, makes troubles to operation; 2, washing away owing to medium power; Molecule in the medium can be washed into the sealing surface of aciculiform flap and valve body; And sealing surface directly to be the outer wall of valve body and flap form, sealing surface very easily damage and inconvenience through changing the valve body maintenance, only can't reach required sealing effect through changing flap; 3, valve body is connected through the screw-thread fit that is processed to form with valve gap, and does not have Sealing between valve gap and valve body, because there is error in the part machining, exists the gap to cause valve gap and valve seal property relatively poor between valve gap and the valve body, and liquid is easy to generate leakage in the pipeline; 4, valve rod and aciculiform flap adopt the split setting, because processing exists error, aciculiform flap and valve rod coaxality not to guarantee fully, cause the flap sealing unreliable.
Summary of the invention
To the deficiency that existing technology exists, the purpose of the utility model is to provide that a kind of sealing surface sealing is reliable, the aciculiform stop valve of long service life, valve rod operation light and flexible and compact structure.
For realizing above-mentioned purpose; The utility model provides following technological scheme: a kind of aciculiform stop valve, include valve body, valve gap, valve rod and aciculiform flap, and be provided with the valve pocket of entery and delivery port and UNICOM's entery and delivery port in the said valve body; Said aciculiform flap is located in the valve pocket; And realize the conducting or the interruption of valve pocket through moving axially of aciculiform flap, and said aciculiform flap includes connecting end that is connected with valve rod and the aciculiform sealed end that is sealed and matched with valve pocket, and valve rod is inserted in the mounting hole that the valve gap middle part is provided with; The other end of the end that valve rod is connected with the aciculiform sealed end is equiped with handwheel; It is characterized in that: on the described aciculiform flap and the face that cooperates with the aciculiform sealed end of valve pocket inwall be provided with the hard sealing layer that is sealed and matched each other, the end near handwheel in the said valve gap endoporus is provided with the seal ring fitting seat, fitting seat is provided with seal ring; Said seal ring one side and valve rod are close to sealing, and opposite side and valve gap are close to sealing.
Through adopting technique scheme; Through being sealed and matched between the hard sealing layer that is provided with in flap and the valve pocket, seal more reliably, and reduced the wearing and tearing of sealing layer; Increase the working life of sealing surface; Sealing between valve gap and the valve rod changes traditional packing seal into and adopts the seal ring sealing, makes the keying light and flexible more of valve to alleviate the labor intensity that valve is operated.
The utility model further is set to: be provided with valve seat in the described valve pocket, valve seat and valve body removably connect, and the hard sealing layer on the said valve pocket inwall is located on the valve seat.
Through adopting technique scheme; In valve pocket, be provided with the valve seat with the valve body split, the hard sealing layer that is sealed and matched with flap is set on the valve seat, when sealing surface damages, keep in repair convenient; Can keep in repair through changing valve seat and flap simultaneously, maintenance back sealing effect reaches necessary requirement.
The utility model further is set to: be provided with stepped recesses in the described valve pocket, said valve seat embeds and is installed in the groove, and the opposite side and the valve gap of the side that valve seat and bottom portion of groove are fitted offset.
Through adopting technique scheme, valve seat is installed simple and convenient, and valve seat is changed conveniently.
The utility model further is set to: the hard sealing layer on the described aciculiform sealed end is towards the most advanced and sophisticated diminishing conical surface of aciculiform sealed end, and the hard sealing layer that corresponding valve seat is provided with is the suitable with it conical surface.
Through adopting technique scheme, the hard sealing layer on the valve seat adopts cone structure to cooperate with the aciculiform flap, and the sealing of flap and valve pocket is more reliable on the one hand, also can realize the throttle operation of valve on the other hand, and valve uses convenient.
The utility model further is set to: described aciculiform flap and valve rod adopt one-body molded.
Through adopting technique scheme, aciculiform flap and valve rod are processed to form on same axle, have guaranteed the coaxality of flap and valve rod, and the sealing to valve pocket when flap is closed is more reliable.
This practicality newly further is set to: described valve body and valve gap joint are provided with annular mounting groove, are provided with the valve bonnet seal circle in the mounting groove.
Through adopting technique scheme, have additional seal ring between valve body and the valve gap, guaranteed that the sealing between valve body and the valve gap is reliable.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is the structure sectional view of the background technique of the utility model;
Fig. 2 is the embodiment's of the utility model a structure sectional view;
Fig. 3 is the A partial enlarged drawing of Fig. 2.
The 1-valve body, 12-valve bonnet seal circle, 2-valve seat, 21-valve seat insert, 3-aciculiform flap, 31-connecting end, 32-aciculiform sealed end, 4-valve rod, 5-valve gap, 51-seal ring, 6-handwheel, 7-bonnet nut.
Embodiment
Referring to accompanying drawing 2, accompanying drawing 3, the disclosed a kind of aciculiform stop valve of the utility model includes the valve body 1, valve gap 5, valve rod 4 and the aciculiform flap 3 that are provided with into water outlet.Be provided with the installation cavity that supplies valve gap 5 to install in the valve body 1, it is step-like that installation cavity is, and is provided with internal thread near the step side of valve pocket; The internal thread that is provided with in outside thread that valve gap 5 is provided with through outer wall and the valve body 1 spins to form and removably connects; Be close to contact away from the step side of valve pocket with valve gap 5 and be connected, the joint is provided with annular mounting groove, and the mounting groove opening is towards valve body 1; Be provided with valve bonnet seal circle 12 in the mounting groove; Valve bonnet seal circle 12 forms the further sealing of valve gap 5 with valve body 1, even machining causes thread pitch, valve bonnet seal circle 12 also can guarantee the sealing between valve gap 5 and the valve body 1.
Be provided with the valve pocket that is communicated with intake-outlet in the valve body 1, be provided with the aciculiform flap 3 of control valve pocket break-make in the valve pocket; Aciculiform flap 3 includes connecting end 31 and forms the aciculiform sealed end 32 that contact seal cooperates with valve pocket; Aciculiform sealed end 32 needle points are towards the valve pocket bottom; The face that the conical surface of aciculiform sealed end 32 and valve pocket inwall cooperate with aciculiform sealed end 32 is provided with the hard sealing layer; Be sealed and matched through the formation of two hard sealing layers, said hard sealing layer is employed in the cemented carbide of built-up welding on aciculiform sealed end 32 and the valve body 1; And the hard sealing layer on the aciculiform sealed end 32 is towards aciculiform sealed end 32 most advanced and sophisticated diminishing conical surfaces, and the hard sealing layer on the corresponding valve body 1 is the suitable with it conical surface.This is provided with has realized real hard sealing, seals more reliably, and the cemented carbide of built-up welding slowed down in the medium molecule to the rate of corrosion of sealing surface, has prolonged valve working life; Hard sealing layer on the valve body 1 adopts cone structure to cooperate with aciculiform flap 3 simultaneously, and aciculiform flap 3 is more reliable with the sealing of valve pocket inwall on the one hand, also can realize the throttle operation of valve on the other hand.
Valve rod 4 is inserted in the mounting hole that valve gap 5 middle parts are provided with, and valve rod 4 one ends are connected with aciculiform sealed end 32, and the other end is equiped with handwheel 6, and handwheel 6 is screwed on the valve rod 4 through screw thread, and valve rod 4 ends are with bonnet nut 7; End near handwheel 6 in said valve gap 5 endoporus is provided with the seal ring fitting seat, and the seal ring fitting seat is employed on the wall of valve gap 5 endoporus and offers circular groove, is provided with seal ring 51 in the groove; Said seal ring 51 1 sides and valve rod 4 are adjacent to, and opposite side and valve gap are adjacent to; Seal ring 51 forms the sealing of valve rod 4 with valve gap 5.For making valve rod 4 sealings reliable, be provided with at least two circular grooves in valve gap 5 endoporus, be respectively equipped with seal ring 51 in each groove, the many more sealings to valve rod 4 of seal ring 51 settings are reliable more certainly.
Convenient for the aciculiform flap 3 that makes valve with the sealing surface repair and replacement of valve body 1, be provided with stepped recesses in the described valve pocket, be embedded with valve seat 2 in the groove; The hard sealing layer that described valve pocket inwall is provided with is located on the valve seat 2, and promptly built-up welding has cemented carbide on valve seat 2 and the face that aciculiform flap 3 cooperates; Valve seat 2 is provided with Baltimore groove with a side of fitting in the stepped recesses bottom, is provided with " O " shape seal ring in the groove, and " O " shape seal ring forms the sealing to valve seat 2, and the opposite side of valve seat 2 and valve gap 5 offset, and promptly valve seat 2 is pressed on the Baltimore groove bottom through valve gap 5.
For further guaranteeing the coaxality of aciculiform flap 3 and valve rod 4; Described aciculiform flap 3 adopts one-body molded setting with valve rod 4; Be that aciculiform flap 3 is processed to form on same axle with valve rod 4; Guaranteed the coaxality of aciculiform flap 3, made aciculiform flap 3 when closing valve pocket with valve rod 4, more reliable to the sealing of valve pocket.
Seal ring 51 in the utility model, valve bonnet seal circle 12 and valve seat insert 21 are " O " shape seal ring.
Present embodiment only is used to explain the usefulness of the utility model; It is not restriction to the utility model; Also can make corresponding distortion and modification under the guidance of those skilled in the art according to the spirit all the time of the utility model, so all technological schemes that are equal to all belong to the protection domain of the utility model.
Claims (9)
1. aciculiform stop valve; Include valve body, valve gap, valve rod and aciculiform flap; The valve pocket that is provided with entery and delivery port in the said valve body and is communicated with entery and delivery port, said aciculiform flap is located in the valve pocket, and conducting or the interruption that realizes valve pocket that move axially through the aciculiform flap; Said aciculiform flap includes connecting end that is connected with valve rod and the aciculiform sealed end that is sealed and matched with valve pocket; Valve rod is inserted in the mounting hole that valve gap middle part is provided with, and the other end of the end that valve rod is connected with the aciculiform sealed end is equiped with handwheel, it is characterized in that: on the described aciculiform flap and the face that cooperates with the aciculiform sealed end of valve pocket inwall be provided with the hard sealing layer that is sealed and matched each other; End near handwheel in the said valve gap endoporus is provided with the seal ring fitting seat; Fitting seat is provided with seal ring, and said seal ring one side and valve rod are close to sealing, and opposite side and valve gap are close to sealing.
2. aciculiform stop valve according to claim 1 is characterized in that: be provided with valve seat in the described valve pocket, valve seat and valve body removably connect, and the hard sealing layer on the said valve pocket inwall is located on the valve seat.
3. aciculiform stop valve according to claim 2 is characterized in that: be provided with stepped recesses in the described valve pocket, said valve seat embeds and is installed in the groove, and the opposite side and the valve gap of the side that valve seat and bottom portion of groove are fitted offset.
4. according to claim 2 or 3 described aciculiform stop valves; It is characterized in that: the hard sealing layer on the described aciculiform sealed end is towards the most advanced and sophisticated diminishing conical surface of aciculiform sealed end, and the hard sealing layer that corresponding valve seat is provided with is the suitable with it conical surface.
5. according to claim 1 or 2 or 3 described aciculiform stop valves, it is characterized in that: described aciculiform flap and valve rod adopt one-body molded.
6. aciculiform stop valve according to claim 4 is characterized in that: described aciculiform flap and valve rod adopt one-body molded.
7. according to claim 1 or 2 or 3 or 6 described aciculiform stop valves, it is characterized in that: described valve body and valve gap joint are provided with annular mounting groove, are provided with the valve bonnet seal circle in the mounting groove.
8. aciculiform stop valve according to claim 4 is characterized in that: described valve body and valve gap joint are provided with annular mounting groove, are provided with the valve bonnet seal circle in the mounting groove.
9. aciculiform stop valve according to claim 5 is characterized in that: described valve body and valve gap joint are provided with annular mounting groove, are provided with the valve bonnet seal circle in the mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203360532U CN202203421U (en) | 2011-09-08 | 2011-09-08 | Needle-shaped stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203360532U CN202203421U (en) | 2011-09-08 | 2011-09-08 | Needle-shaped stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203421U true CN202203421U (en) | 2012-04-25 |
Family
ID=45967542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203360532U Expired - Fee Related CN202203421U (en) | 2011-09-08 | 2011-09-08 | Needle-shaped stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202203421U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591302A (en) * | 2012-10-23 | 2014-02-19 | 北京熊川阀门制造有限公司 | Sealing structure of needle-shaped stop valve |
| CN103644306A (en) * | 2013-11-18 | 2014-03-19 | 江苏华太电力仪表有限公司 | Regulating valve of gas cooker |
| CN107387776A (en) * | 2017-07-17 | 2017-11-24 | 中国船舶重工集团公司第七0三研究所 | A kind of bottom blowoff valve suitable for Turbo-charged Marine Boiler |
| CN110030389A (en) * | 2019-05-06 | 2019-07-19 | 西南石油大学 | A kind of cage type throttling valve |
-
2011
- 2011-09-08 CN CN2011203360532U patent/CN202203421U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591302A (en) * | 2012-10-23 | 2014-02-19 | 北京熊川阀门制造有限公司 | Sealing structure of needle-shaped stop valve |
| CN103591302B (en) * | 2012-10-23 | 2015-11-04 | 北京熊川阀门制造有限公司 | A kind of sealing configuration of needle stop valve |
| CN103644306A (en) * | 2013-11-18 | 2014-03-19 | 江苏华太电力仪表有限公司 | Regulating valve of gas cooker |
| CN103644306B (en) * | 2013-11-18 | 2016-08-17 | 江苏华太电力仪表有限公司 | A kind of regulation valve of kitchen range |
| CN107387776A (en) * | 2017-07-17 | 2017-11-24 | 中国船舶重工集团公司第七0三研究所 | A kind of bottom blowoff valve suitable for Turbo-charged Marine Boiler |
| CN110030389A (en) * | 2019-05-06 | 2019-07-19 | 西南石油大学 | A kind of cage type throttling valve |
| CN110030389B (en) * | 2019-05-06 | 2023-10-27 | 西南石油大学 | Cage sleeve type throttle valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20140908 |
|
| EXPY | Termination of patent right or utility model |