CN2179500Y - Sluice valve having inner sealing and without leakage - Google Patents
Sluice valve having inner sealing and without leakage Download PDFInfo
- Publication number
- CN2179500Y CN2179500Y CN 93246793 CN93246793U CN2179500Y CN 2179500 Y CN2179500 Y CN 2179500Y CN 93246793 CN93246793 CN 93246793 CN 93246793 U CN93246793 U CN 93246793U CN 2179500 Y CN2179500 Y CN 2179500Y
- Authority
- CN
- China
- Prior art keywords
- valve
- leakage
- stuffing box
- valve rod
- elastic sleeve
- 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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Abstract
The utility model relates to a gate valve with inner sealing and without leakage, which can prevent the leakage between a valve rod and a valve shell. The valve rod 1 between a gate plate and a stuffing box 4 in a valve cover 5 is sheathed with an elastic sleeve 7 whose two ends are fixed on the end portions of the stuffing box and the valve rod. Meanwhile, the deposition pit 8 of a valve seat (the slot body of the gate plate) is provided with a connection hole on the side wall of a liquid outlet to prevent the deposition pit from depositing fluid or impurity. Thus deposited impurity is carried away with the fluid. The match precision between the gate plate and the valve seat (the slot body of the gate plate) can be realized. The closing is tight without leakage.
Description
The utility model relates to a kind of sealing problem of gate valve, belongs to interior seal gate valve.
Gate valve is a switch control piece on the fluid line.Valve casing, valve rod, flashboard, valve seat, sealed stuffing box and valve gap and handwheel are arranged, have filler to realize the sealing of valve rod and valve cover chamber in the stuffing box.This sealing is because the frequent rotation of valve rod, accelerated the wearing and tearing of filler and valve rod and leaks.In order to improve sealing, improve the material of valve rod, but cost increases like this; What have screws gland and can realize sealing again, but because tension and switch effort, misses and has to change again filler when serious, increases maintenance expenses.The exit seal of gate valve is to be realized by the quality of fit between flashboard and valve seat (flashboard slot), because fluid is in pipeline in the flow process, wherein impurity or material just coagulating sedimentation in valve seat (flashboard slot) lining, influence the quality of fit between flashboard and valve seat (flashboard slot), make valve closing not tight.
The purpose of this utility model is to avoid deficiency in the above-mentioned prior art, and provide a kind of can the valve rod in valve gap on sealing and gate valve that sediments is discharged, can improve sealability.
The purpose of this utility model can reach by the following technical programs: be with elastic sleeve on the valve rod in valve casing between stuffing box and the flashboard, the two ends of cover are fixed on the end of stuffing box and valve rod; On the 8 outlet sidewalls of the heavy hole of valve seat (flashboard slot), intercommunicating pore 9 is arranged.
Above-mentioned rubber elasticity cover and the corrugated elastic sleeve of can be: intercommunicating pore can have more than 2.
The utility model can have following effect than above-mentioned prior art: because the sealing on the valve rod seals in adopting, mutual wearing and tearing are not arranged, can improve sealability; On the 8 outlet sidewalls of heavy hole, intercommunicating pore 9 is arranged, make that sediments flows away with fluid in the heavy hole, guarantee the quality of fit between flashboard and the valve seat (flashboard slot), close tightly and do not leak.
Fig. 1 is that existing gate valve improves the complete section diagrammatic sketch;
Fig. 2,3, the 4th, the main plan view of elastic sleeve 7 and left pseudosection on Fig. 1;
Fig. 5 is the utility model complete section diagrammatic sketch
Below in conjunction with accompanying drawing will the utility model is described in further detail:
By gate valve shown in Figure 1, that constitute by valve casing 15, valve rod 1, flashboard 10, stuffing box 4, valve gap 5 and handwheel.The utility model is an installing elastic sleeve 7 on the valve rod 1 between stuffing box 4 and the flashboard 10 in valve casing 15, the upper end of elastic sleeve 7 is fixed on the stuffing box 4 with pressing plate 6 and screw 13, and the lower end of elastic sleeve 7 is fixed on the end that valve rod 1 is connected with flashboard 10 with snap ring 12 and bolt 11.On the heavy hole of valve seat (flashboard slot) 8 outlet sides (gate valve outlet side) wall, intercommunicating pore 9 is arranged, impurity or material are deposited in the hole 8 at any time by fluid removal, realize the quality of fit between flashboard and the valve seat (flashboard cell body).
Above-mentioned elastic sleeve 7 can adopt rubber elasticity cover and corrugated rubber elasticity cover.The heavy hole 8 of valve seat (flashboard cell body) can be provided with 2 above intercommunicating pores 9 on the outlet sidewall.Gland 3 and gland stud 2 all can save, as shown in Figure 5.
Claims (4)
1, a kind of interior sealing does not have the gate valve of leakage, and it has valve casing, valve rod, valve plate, valve seat, stuffing box and valve gap, it is characterized in that:
(1) be with elastic sleeve (7) on the valve rod (1) between valve gap (5) lining stuffing box (4) and the flashboard (10), the two ends of cover are fixed on the end of stuffing box (4) and valve rod (10);
(2) on the outlet sidewall, intercommunicating pore (9) is arranged in the heavy hole (8) of valve seat.
2, gate valve according to claim 1 is characterized in that: elastic sleeve (7) can adopt the rubber elasticity cover.
3, gate valve according to claim 1 and 2 is characterized in that: elastic sleeve (7) can adopt the corrugated elastic sleeve.
4, gate valve according to claim 1 is characterized in that: intercommunicating pore (9) can have more than 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93246793 CN2179500Y (en) | 1993-12-03 | 1993-12-03 | Sluice valve having inner sealing and without leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93246793 CN2179500Y (en) | 1993-12-03 | 1993-12-03 | Sluice valve having inner sealing and without leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2179500Y true CN2179500Y (en) | 1994-10-12 |
Family
ID=33819363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93246793 Expired - Fee Related CN2179500Y (en) | 1993-12-03 | 1993-12-03 | Sluice valve having inner sealing and without leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2179500Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940089A (en) * | 2017-09-22 | 2018-04-20 | 郑立新 | Gate valve |
| CN110469714A (en) * | 2019-09-01 | 2019-11-19 | 永嘉企达知识产权咨询有限公司 | A kind of on-line maintenance gate valve |
-
1993
- 1993-12-03 CN CN 93246793 patent/CN2179500Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940089A (en) * | 2017-09-22 | 2018-04-20 | 郑立新 | Gate valve |
| CN110469714A (en) * | 2019-09-01 | 2019-11-19 | 永嘉企达知识产权咨询有限公司 | A kind of on-line maintenance gate valve |
| CN110469714B (en) * | 2019-09-01 | 2020-12-01 | 浙江慧博阀门科技有限公司 | Online maintenance gate valve |
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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 |