CN202302019U - Double sealed sleeve type throttle valve - Google Patents
Double sealed sleeve type throttle valve Download PDFInfo
- Publication number
- CN202302019U CN202302019U CN 201120377432 CN201120377432U CN202302019U CN 202302019 U CN202302019 U CN 202302019U CN 201120377432 CN201120377432 CN 201120377432 CN 201120377432 U CN201120377432 U CN 201120377432U CN 202302019 U CN202302019 U CN 202302019U
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- valve seat
- valve body
- coaxial
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a double sealed sleeve type throttle valve, which includes a valve body, a valve cap, a valve core, a valve seat, a seal ring, a valve rod and a driving handle, wherein a conical bench is formed on the inner side of the upper end surface of the valve seat and at a contact part of the valve core and the valve seat; a valve seat hard sealing layer of hard alloy material is spray-welded on the conical bench; an inverted conical bench with the same conical degree and inclination angle is also formed on a valve core matching surface corresponding to the conical bench; and a valve seat hard sealing layer of the hard alloy material is also spray-welded on the inverted conical bench. The double sealed sleeve type throttle valve is scientifically designed, is simple in structure, long in service life and high in sealing reliability, remarkably improves the sealing effect, can meet demand of working pipelines at different positions, and has a better applicability.
Description
Technical field
The utility model belongs to the valve class, relates to throttle valve, especially a kind of double-sealing shell type throttle valve.
Background technique
At present, the spool of throttle valve is soft seal with valve seat at coaxial keying state, the sliding up and down the wearing and tearing that cause soft seal easily of spool and valve seat and cause seal failure, and sealing reliability is relatively poor, and anti-medium impact capacity is lower, and working life is shorter.
Summary of the invention
The purpose of the utility model is to overcome the deficiency of existing technology, and the double-sealing shell type throttle valve of a kind of soft seal with hard seal combination is provided.
The utility model solves its technical problem and takes following technological scheme to realize:
A kind of double-sealing shell type throttle valve; Comprise valve body, valve gap, spool, valve seat, seal ring, valve rod and driving handle, valve gap and the coaxial installation of valve body, valve rod top installs driving handle; Valve rod is installed with the coaxial engagement of gland; The coaxial installation spool in valve rod lower end in valve body all is equipped with seal ring between the coaxial valve seat that is fixed with on the valve body between spool bottom and the valve body, this valve seat and valve body and on valve seat and the surface of contact that spool contacts; It is characterized in that: the inboard, valve seat upper-end surface at spool and valve seat contacting part is shaped on a tapered stage, the hard sealing layer of valve seat of surfacing Hardmetal materials on this taper stage; To being shaped on the inverted cone stage at identical tapering inclination angle on should the spool fitting surface of taper stage, the also hard sealing layer of valve seat of surfacing Hardmetal materials on this inverted cone stage.
And, on the valve body between valve gap and the valve seat, be coaxially installed with a guide pin bushing with spool outer cylinder sealing, on valve gap and spool with the coaxial guide rod that is equipped with of spool.
The advantage and the good effect of the utility model are:
1, the form of back seal processed spool by this throttle valve; And at sealing contact surface surfacing Hardmetal materials layer; Hardmetal materials layer on the structure that cooperates with the spool back seal and the surfacing is made at the valve seat place equally, forms hard sealing during valve closes, has better shock-resistant withstand voltage properties for washing away of medium; Guarantee can not have better sealing reliability because of the seal ring easy abrasion causes throttle valve loss of seal function.
2, this throttle valve has kept the soft seal form of original seal ring, has increased hard sealing structure again simultaneously, makes full use of the form that soft and hard seal combines, and forms double seal, better plays sealing effect
3, the utility model design science, simple in structure, long service life, sealing reliability are high, have significantly improved sealing effect, can satisfy the working line needs of diverse location, have better applicability.
Description of drawings
Fig. 1 is the utility model structural front view;
Fig. 2 is the I portion enlarged view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and through specific embodiment the utility model is done further to detail, following examples are descriptive, are not determinate, can not limit the protection domain of the utility model with this.
A kind of double-sealing shell type throttle valve; Comprise valve body 1, valve gap 7, spool 3, valve seat 2, seal ring 6, valve rod 8 and driving handle 9; Valve gap adopts the coaxial installation of bolt with valve body through made separately flange, and valve rod top installs driving handle, and valve rod is installed with the coaxial engagement of gland.The coaxial installation spool in valve rod lower end in valve body all is equipped with seal ring between the coaxial valve seat that is fixed with on the valve body between spool bottom and the valve body, this valve seat and valve body and on valve seat and the surface of contact that spool contacts.
Rotating drive handle actuatable valve bar drives spool and in valve body, moves, and adjusting can be passed through flow, when spool moves down with the valve seat closure, realizes throttling action.
The innovative point of the utility model is:
Inboard, valve seat upper-end surface at spool and valve seat contacting part is shaped on a tapered stage, the hard sealing layer 10 of the valve seat of surfacing Hardmetal materials on this taper stage; To being shaped on the inverted cone stage at identical tapering inclination angle on should the spool fitting surface of taper stage, the also hard sealing layer 11 of the valve seat of surfacing Hardmetal materials on this inverted cone stage.When valve closes, hard sealing layer of valve seat and the hard sealing layer of spool form hard sealing, form double seal with seal ring simultaneously.
On the valve body between valve gap and the valve seat, be coaxially installed with a guide pin bushing 4 with spool outer cylinder sealing, on valve gap and spool with the coaxial guide rod 5 that is equipped with of spool, spool upper and lower displacement under the leading role of this guide rod.
Claims (2)
1. double-sealing shell type throttle valve; Comprise valve body, valve gap, spool, valve seat, seal ring, valve rod and driving handle, valve gap and the coaxial installation of valve body, valve rod top installs driving handle; Valve rod is installed with the coaxial engagement of gland; The coaxial installation spool in valve rod lower end in valve body all is equipped with seal ring between the coaxial valve seat that is fixed with on the valve body between spool bottom and the valve body, this valve seat and valve body and on valve seat and the surface of contact that spool contacts; It is characterized in that: the inboard, valve seat upper-end surface in spool and valve seat contact position is shaped on a tapered stage, the hard sealing layer of valve seat of surfacing Hardmetal materials on this taper stage; To being shaped on the inverted cone stage at identical tapering inclination angle on should the spool fitting surface of taper stage, the also hard sealing layer of valve seat of surfacing Hardmetal materials on this inverted cone stage.
2. double-sealing shell type throttle valve according to claim 1 is characterized in that: on the valve body between valve gap and the valve seat, be coaxially installed with a guide pin bushing with spool outer cylinder sealing, on valve gap and spool with the coaxial guide rod that is equipped with of spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120377432 CN202302019U (en) | 2011-09-29 | 2011-09-29 | Double sealed sleeve type throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120377432 CN202302019U (en) | 2011-09-29 | 2011-09-29 | Double sealed sleeve type throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202302019U true CN202302019U (en) | 2012-07-04 |
Family
ID=46370917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120377432 Expired - Lifetime CN202302019U (en) | 2011-09-29 | 2011-09-29 | Double sealed sleeve type throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202302019U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662170A (en) * | 2018-07-12 | 2018-10-16 | 宣达实业集团有限公司 | Slurry special service valve |
-
2011
- 2011-09-29 CN CN 201120377432 patent/CN202302019U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662170A (en) * | 2018-07-12 | 2018-10-16 | 宣达实业集团有限公司 | Slurry special service valve |
| CN108662170B (en) * | 2018-07-12 | 2021-05-07 | 宣达实业集团有限公司 | Special valve for slurry |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |