CN2272967Y - Seal ring stuffing-free stop valve - Google Patents
Seal ring stuffing-free stop valve Download PDFInfo
- Publication number
- CN2272967Y CN2272967Y CN 96215895 CN96215895U CN2272967Y CN 2272967 Y CN2272967 Y CN 2272967Y CN 96215895 CN96215895 CN 96215895 CN 96215895 U CN96215895 U CN 96215895U CN 2272967 Y CN2272967 Y CN 2272967Y
- Authority
- CN
- China
- Prior art keywords
- seal ring
- stop valve
- valve body
- sealing
- seal
- 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
Links
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- Details Of Valves (AREA)
- Sealing Devices (AREA)
Abstract
The utility model relates to sealing ring type stuffing-free stop valve. In the utility model, a sealing ring is embedded in a valve core on the lower end of a sealing rod, and the sealing ring is matched with a conical throttling port of a valve body; a sealing ring which is embedded in the middle part of the sealing rod is matched with an inner hole of a sealing sleeve, and the sealing of the stop valve can be realized; threads on the upper end of the sealing rod is matched with a threaded sleeve, and spiral pair can be formed to control the opening and the closure and regulate the water consumption. The utility model has the advantages that the use is convenient, the frequency of the maintenance can be reduced, and the leakage of water can be prevented.
Description
The present invention relates to a kind of non-stuffing stop valve, especially seal ring formula non-stuffing stop valve.
At present, on known stop valve, utilize screw thread to screw power metal spool is pressed on the restriction, in order to passing through by water; Adopt gland packing mode, in order to prevent that sealing is from valve body upper end overflow.Because spool is that hard material contacts with hard material with restriction, service wear is difficult for compensation in addition, thereby has caused stop valve often to occur being not closed completely and leaking.In order to prevent sealing from valve body upper end overflow, present known stop valve requires to screw packing gland.But it is painstaking that undue screwing will cause handle to rotate.Even if adjusted the degree of screwing, because the frequent rotation of handle, the gap between packing and the threaded stem also can be increasing, and is how long have more than is needed, and the spill and leakage phenomenon also will produce.In addition, the set packing_seal device of present known stop valve is positioned at the top of screw pair, and screw pair will contact with the water generates by stop valve, has both caused the corrosion and the infringement of screw pair easily, the cleaning of having polluted water again.
The purpose of this invention is to provide a kind of non-stuffing stop valve that adopts the seal ring sealing, it not only can prevent effectively that stop valve from producing leakage, and can protect the cleaning of water and the working life of prolongation stop valve.
The object of the present invention is achieved like this, and it is made up of valve body, handle, screw, seal ring, thread bush, jam nut, stuffing box gland and seal bar.Be provided with spool in the seal bar lower end, be embedded with the tapered joint mouth that is provided with in seal ring and the valve body on the spool and contact, in order to passing through by water; Be embedded with seal ring at the seal bar middle part, this seal ring matches with the valve body stuffing box gland endoporus that installs suitable for reading, and anti-sealing is from valve body upper end overflow; The seal bar upper end is shaped on screw thread and thread bush is formed screw pair, in order to realize that moving up and down of seal bar is moving up and down of spool, to reach the effect of switch and regulating water-quantity.In order to make rotatablely moving of thread bush become the straight line motion of seal bar, special with screw thread position, seal bar upper end a side milling out-of-plane and cooperate with the plane that is provided with in the stuffing box gland.The rotation of thread bush is rotated by the handle that is attached thereto and is realized.Thread bush is shaped on the lower edge, is seated in the cavity of jam nut upper end to rotate.The jam nut lower end is shaped on internal thread and is threaded with the outside thread formation of valve body upper end.The step at jam nut middle part is pressed on the upper edge of stuffing box gland, makes the stuffing box gland solid pressure in valve body suitable for reading.Stuffing box gland is equipped with seal ring below the upper edge, in order to overflow the anti-gap that sealing is suitable for reading from valve body with stuffing box gland contacts.
Because adopt such scheme, the seal ring on the stop valve spool can form sealing reliably in conical restriction, reach the purpose that prevents that the valve generation from leaking.Owing to adopt such scheme, make the sealing reliability of stop valve upper end guarantee, thereby can guarantee that the leakproofness that seals can guarantee the light rotation of handle again by adopting seal ring and corresponding machining accuracy; The requirement that can avoid often adjusting packing gland can keep permanent sealing effect again.In addition, adopt such scheme, make seal arrangement be positioned at the below of screw pair, thereby prevented contacting of water and screw pair, not only reduced the corrosion of screw pair but also protected the cleaning of water.
The present invention is further described below in conjunction with drawings and Examples.
Accompanying drawing is structure sectional view of the present invention and embodiment's a tectonic maps.
Among the figure: 1. seal ring 2. seal bar 3. seal rings
4. seal ring 5. screws 6. handles
7. thread bush 8. stuffing box glands 9. jam nuts
10. valve body
In the accompanying drawings, when handle with sleeve (6), will drive thread bush (7) and rotate together, the rotation of thread bush (7) produces seal bar (2) and moves up and down.When moving upward, seal bar (2) lower end spool breaks away from restriction in the valve body (10) together with related seal ring (1), and stop valve is opened; When moving downward, then the seal ring on the spool (1) is close on the restriction wall, and stop valve is closed.In seal bar (2) when moving up and down, be embedded in seal ring (3) movement therewith at its middle part and closely contact with the inner hole wall of stuffing box gland (8), anti-sealing is from valve body upper end spill and leakage.The big I of stop valve flow is arbitrarily determined by the handle pivotal position.
In first embodiment shown in the drawings, valve body is established conical restriction in (10), and valve body (10) upper end hole matches with stuffing box gland (8), and stuffing box gland (8) has the upper edge, seal ring (4) is housed under the upper edge, and valve body (10) upper end cylindrical is shaped on outside thread and realizes being threaded with jam nut (9).The rotating position position of cavity as thread bush (7) left in jam nut (9) top.
In second embodiment shown in the drawings, seal bar (2) is divided into three parts as an integral stem, its lower end is spool and is embedded with seal ring (1) and cooperates with the restriction of valve body (10), its middle part is embedded with seal ring (3) and cooperates with the endoporus of stuffing box gland (8), and its upper end cooperates with plane on thread bush (7) and the stuffing box gland (8) and forms the screw pair that the rotation change is directly moved for milling out the screw thread of side plane.
In the 3rd embodiment shown in the drawings, stuffing box gland (8) top is milled with that the plane cooperates with handle (6) and by upper end screw thread and screw (5) formation scyewed joint.
The present invention can adopt the manufacturing of general machining method, when forming batch process, can adopt modular machine tool to make production.
Claims (2)
1, a kind of with the non-stuffing stop valve of seal ring as seal arrangement, it is made up of valve body, handle, screw, seal ring, thread bush, jam nut, stuffing box gland and seal bar, it is characterized in that:
A. establish conical restriction in the valve body, the valve body upper end hole matches with stuffing box gland, and sealing is with the upper edge, under the upper edge seal ring is housed
B. valve body upper end cylindrical is shaped on outside thread and realizes being threaded with jam nut, leaves cavity above the jam nut.
2, seal ring formula non-stuffing stop valve according to claim 1 is characterized in that: the lower end of seal bar is spool and is embedded with seal ring that its middle part is embedded with seal ring, is the screw thread that mills out side plane on it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96215895 CN2272967Y (en) | 1996-07-31 | 1996-07-31 | Seal ring stuffing-free stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96215895 CN2272967Y (en) | 1996-07-31 | 1996-07-31 | Seal ring stuffing-free stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2272967Y true CN2272967Y (en) | 1998-01-21 |
Family
ID=33897563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96215895 Expired - Fee Related CN2272967Y (en) | 1996-07-31 | 1996-07-31 | Seal ring stuffing-free stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2272967Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479165A (en) * | 2018-04-11 | 2018-09-04 | 珠海市思卡净化技术有限公司 | A kind of raised sealing structure valve block of combination assembly |
-
1996
- 1996-07-31 CN CN 96215895 patent/CN2272967Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479165A (en) * | 2018-04-11 | 2018-09-04 | 珠海市思卡净化技术有限公司 | A kind of raised sealing structure valve block of combination assembly |
| CN108479165B (en) * | 2018-04-11 | 2024-05-24 | 珠海市思卡净化技术有限公司 | Valve plate with combined assembly bulge sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |