CN201007359Y - Adjustable piston valve - Google Patents
Adjustable piston valve Download PDFInfo
- Publication number
- CN201007359Y CN201007359Y CNU2006201413981U CN200620141398U CN201007359Y CN 201007359 Y CN201007359 Y CN 201007359Y CN U2006201413981 U CNU2006201413981 U CN U2006201413981U CN 200620141398 U CN200620141398 U CN 200620141398U CN 201007359 Y CN201007359 Y CN 201007359Y
- Authority
- CN
- China
- Prior art keywords
- valve
- flap
- sealing
- cover
- valve rod
- 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 - Fee Related
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- Sealing Devices (AREA)
Abstract
The utility model relates to a valve, in particular to an adjustable piston valve, which is characterized in that the upper end of a valve flap is provided with a valve flap cover, a sealing groove and a sealing ring whose opening is towards a sealing base are arranged between the valve flap cover and the valve flap which are adjustably connected through a screw bolt, the matching position of the upper end face of the valve cover and a valve pole is provided with a flexible sealing-ring, the valve pole on the upper end of the valve flap is provided with a tapering inclined-plane, and as the opening of the valve flap, the tapering inclined-plane and the sealing ring form pressure matching. The valve of the utility model has excellent sealing performance and the abrasion of the sealing ring can be compensated by the displacement of the valve flap cover, the life span of the valve is prolonged substantially, and the repairing and maintenance is very convenient, in addition, when the valve is opened, the sealing can be realized by the tapering inclined-plane pressing the flexible sealing-ring on the upper end of the valve cover, and the sealing ring is deformed and embraces and presses the valve pole, thereby the sealing effect at the valve cover is improved.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of adjustable piston valve.
Background technique
The structure that the existing piston valve generally adopts the metal flap to match with metal seat valve, when medium is solid particle, in case service time is long, then immobilized particles causes wearing and tearing and makes it seal failure the sealing surface at flap and valve seat place easily, thereby whole valve is scrapped, in addition, current piston valve, along with the prolongation of service time, revealing appears in stuffing box packing between valve rod and the valve gap easily, thereby further influences the sealability of valve.
Summary of the invention
The purpose of this utility model provides a kind of favorable sealing property, the adjustable piston valve of long service life.
The purpose of this utility model is achieved by the following technical solution: a kind of adjustable piston valve, include valve body, valve gap, flap and valve rod, between valve gap and valve rod, be provided with stuffing box packing, valve body is provided with valve seat, flap is opened with the motion and the valve seat of valve rod, airtight cooperation, it is characterized in that: the upper end of described flap is provided with the flap lid, between flap lid and flap, be provided with seal groove and the seal ring thereof of opening towards sealing seat, described flap is connected by bolt is adjustable with the flap lid, lower end surface and valve rod cooperation place at valve gap are provided with the soft seal ring, be provided with the awl inclined-plane on the valve rod of the upper end of flap, with the unlatching of flap, this awl inclined-plane cooperates with soft seal ring formation roof pressure.
The utility model further is set to: be provided with locating slot on valve rod, the relative position at the flap lid is provided with locating stud simultaneously.
The beneficial effects of the utility model are: owing to adopted seal ring and valve base sealing, use lateral seal simultaneously, sealability of the present utility model is improved greatly, the wearing and tearing of seal ring can be compensated by the displacement of flap lid, life-span of the present utility model also prolongs greatly, simultaneously because flap only adopts bolt to be connected with the flap lid, unload bolt and just can change seal ring, make maintenance of the present utility model, maintenance is convenient completely, in addition, flap comes the soft seal ring of roof pressure valve gap lower end that its distortion is embraced to push down valve rod to realize sealing by the awl inclined-plane when opening, thereby has increased the sealing effect at valve gap place.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Embodiment
Now in conjunction with the accompanying drawings the utility model is further described:
By as can be known shown in Figure 1, the embodiment of a kind of adjustable piston valve of the utility model, include valve body 4, valve gap 3, flap 7 and valve rod 1, between valve gap 3 and valve rod 1, be provided with stuffing box packing 2, valve body 4 is provided with valve seat 41, flap 7 is opened with the motion and the valve seat 41 of valve rod 1, airtight cooperation, the upper end of described flap 7 is provided with flap lid 5, between flap lid 5 and flap 7, be provided with seal groove 9 and the seal ring 6 thereof of opening towards sealing seat, described flap 7 and flap lid 5 is provided with soft seal ring 10 by 8 adjustable connections of bolt in the lower end surface and valve rod 1 cooperation place of valve gap 3, is provided with on the valve rod 1 of the upper end of flap 7 and bores inclined-plane 11, with the unlatching of flap 7, this awl inclined-plane 11 constitutes roof pressure with soft seal ring 10 and cooperates.Owing to adopted seal ring 6 and valve base sealing, use lateral seal simultaneously, sealability of the present utility model is improved greatly, the wearing and tearing of seal ring 6 can be covered 5 displacement by flap and be compensated, life-span of the present utility model also prolongs greatly, simultaneously because flap 7 adopts bolt 8 to be connected with 5 on flap lid, unload bolt 8 and just can change seal ring 6, make maintenance of the present utility model, maintenance is convenient completely, and in addition, flap 7 is when opening, come the soft seal ring 10 of roof pressure valve gap 3 lower ends that its distortion is embraced to push down valve rod 1 to realize sealing by awl inclined-plane 11, form the sealing of two roads with stuffing box packing 2, thereby increased the sealing effect at valve gap 3 places.
Present embodiment also is provided with locating slot on valve rod 1, simultaneously the relative position at flap lid 5 (also can on flap) is provided with locating stud 13, this structure makes valve rod 1 can not rotate and make when mobile can not produce relative rotation between seal ring 6 and the flap lid 5, reduce the wearing and tearing of seal ring 6, prolonged the working life of seal ring 6.
Claims (2)
1. adjustable piston valve, include valve body, valve gap, flap and valve rod, between valve gap and valve rod, be provided with stuffing box packing, valve body is provided with valve seat, flap is opened with the motion and the valve seat of valve rod, airtight cooperation, it is characterized in that: the upper end of described flap is provided with the flap lid, is provided with seal groove and the seal ring thereof of opening towards sealing seat between flap lid and flap, and described flap is connected by bolt is adjustable with the flap lid, lower end surface and valve rod cooperation place at valve gap are provided with the soft seal ring, be provided with the awl inclined-plane on the valve rod of the upper end of flap, with the unlatching of flap, this awl inclined-plane cooperates with soft seal ring formation roof pressure.
2. adjustable piston valve as claimed in claim 1 is characterized in that: be provided with locating slot on valve rod, the relative position at the flap lid is provided with locating stud simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201413981U CN201007359Y (en) | 2006-12-25 | 2006-12-25 | Adjustable piston valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201413981U CN201007359Y (en) | 2006-12-25 | 2006-12-25 | Adjustable piston valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201007359Y true CN201007359Y (en) | 2008-01-16 |
Family
ID=39003306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201413981U Expired - Fee Related CN201007359Y (en) | 2006-12-25 | 2006-12-25 | Adjustable piston valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201007359Y (en) |
-
2006
- 2006-12-25 CN CNU2006201413981U patent/CN201007359Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080116 Termination date: 20111225 |