CN201373121Y - Gate valve - Google Patents
Gate valve Download PDFInfo
- Publication number
- CN201373121Y CN201373121Y CN200820156108U CN200820156108U CN201373121Y CN 201373121 Y CN201373121 Y CN 201373121Y CN 200820156108 U CN200820156108 U CN 200820156108U CN 200820156108 U CN200820156108 U CN 200820156108U CN 201373121 Y CN201373121 Y CN 201373121Y
- Authority
- CN
- China
- Prior art keywords
- valve
- cap
- pressure cap
- valve rod
- gap
- 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 valve, in particular to a gate valve, which comprises a valve body, a valve seat, a valve plate, a valve stem, a sealing ring, a valve cover and a handle, and is characterized in that the upper part of the valve cover is connected with a pressing cap, and the valve stem passes through the middle of the pressing cap; a longitudinal observation window is arranged at one side of the upper part of the pressing cap, and a longitudinal inner slideway is arranged at the other side; screw threads are arranged on the outer wall of the valve stem in the observation window, and the valve stem is connected with a switch display cap through screw threads; the switch display cap is limited in the slideway through a feather key, and a bearing block is arranged in the inner cavity of the middle-lower part of the pressing cap; a bearing which is fixed on the valve stem is arranged in the bearing block. The utility model has the advantages that with the gate valve, the closed state of the gate valve can be directly observed through the observation window so as to facilitate immediate adjustment and use, and simultaneously, the improved sealing measure can improve the sealing performance and service life of the gate valve, and better meet the normal use under the high-pressure condition.
Description
[technical field]
The utility model relates to valve technology field, a kind of specifically gate valve.
[background technique]
Existing gate valve comprises valve body, valve seat, valve plate, valve rod, seal ring, valve gap, handle composition, and wherein valve plate top is provided with threaded stem and is connected the female screw connection that cooperates, and valve plate laterally is provided with the passage that cooperates with valve seat.By the rotating band ovable valve stem rotation of handle, by screw-thread fit effect between valve rod and the valve plate, it is mobile that valve plate is slided up and down in valve body with this, adjusts the switch of gate valve in use for this gate valve.Because the upper and lower displacement of valve rod and handle does not change in the operating process, just can not the residing switch situation of direct observation gate valve.The valve bonnet seal circle of existing gate valve is square or circular in addition, occurs can not adjusting after the wearing and tearing, and valve plate is with valve seat that the cross section is trapezoidal to be cooperated, and influences airtight quality.
[summary of the invention]
The purpose of this utility model is exactly the defective that exists at prior art, and the novel gate valve of a kind of convenient observation, good sealing effect is provided.
For achieving the above object, the technical solution adopted in the utility model is: comprise valve body, valve seat, valve plate, valve rod, seal ring, valve gap, handle composition, wherein valve plate top is provided with threaded stem and is connected the female screw connection that cooperates, and valve plate laterally is provided with the passage that cooperates with valve seat.It is characterized in that: the top at valve gap is connected with pressure cap, run through valve rod in the middle of the pressure cap, one side is offered the longitudinal 2 observation window on the top of pressure cap, opposite side is provided with vertical inner slide, valve rod outer wall in the viewing window is provided with screw thread, and the switch demonstration cap that has been threaded, and switch shows that cap is limited in the slideway by feather key, inner chamber is provided with bearing support in the middle and lower part of pressure cap, in the bearing support there is and the fixing bearing of valve rod device.The longitudinal section of valve plate is a rectangular, and the valve seat longitudinal section of Pei Heing also is a rectangular with it.The seal ring of valve rod and valve gap connecting part is the back seal circle, and the top of sealing circle is tapered, and the shaft shoulder extruding on bottom and the valve rod cooperates, and is provided with Stem Mut in the bottom of seal ring and cooperates with the valve rod outside thread.The connecting part device that slides connecting part, valve body and valve gap, valve gap and pressure cap and valve rod and valve gap, pressure cap at connecting part, valve plate and the valve seat of valve seat and valve body has seal ring.
The beneficial effects of the utility model: adopt gate valve of the present utility model, can observe directly the gate valve closed condition by viewing window, being convenient to instant the adjustment uses, seal approach after improving simultaneously, can improve the sealability and the working life of gate valve, more can satisfy the normal use under the high-pressure situations.
[description of drawings]
Fig. 1 is structural section figure of the present utility model.
[embodiment]
With reference to accompanying drawing, existing gate valve comprises valve body 1, valve seat 2, valve plate 3, valve rod 4, seal ring 7, valve gap 6, handle 11 compositions, wherein valve plate 3 tops are provided with the female screw connection that is threaded and cooperates with valve rod 4, and valve plate 3 laterally is provided with the passage that cooperates with valve seat 2.Improvements of the present utility model comprise: (one) is connected with pressure cap 9 on the top of valve gap 6, run through valve rod 4 in the middle of the pressure cap 9, a side is offered longitudinal 2 observation window 13 on the top of pressure cap 9, opposite side is provided with vertical inner slide 14, valve rod 4 outer walls in the viewing window 13 are provided with screw thread, and the switch that has been threaded shows cap 10, switch shows that cap 10 is limited in the slideway 14 by feather key 12, like this in rotatable handle and valve rod, switch shows that cap is also moving up and down synchronously with valve plate, is convenient to very much observe the switch situation.(2) be provided with bearing support at the middle and lower part of pressure cap 9 inner chamber, device has the bearing of fixing with valve rod 48 in the bearing support, has so both limited valve rod and can not move up and down the resistance of reducing friction again.(3) longitudinal section of valve plate 3 is by the trapezoidal rectangular that changes into, and valve seat 2 longitudinal sections of Pei Heing also are rectangular with it.(4) valve rod 4 be the back seal circle with the seal ring 7 of valve gap 6 connecting parts, and the top of sealing circle 7 is tapered, and the bottom is pushed with the shaft shoulder on the valve rod 4 and cooperated, when gate valve switch, chamber pressure promotes valve rod 4 and rises, and the shaft shoulder extruding back seal circle 7 on the valve rod 4 forms back seal.Be provided with Stem Mut 5 cooperates with valve rod 4 outside threads in the bottom of seal ring 7.In the connecting part of valve seat 2 and valve body 1, the connecting part device that slides connecting part, valve body 1 and valve gap 6, valve gap 6 and pressure cap 9 and valve rod 4 and valve gap 6, pressure cap 9 of valve plate 3 and valve seat 2 has seal ring.Improvement with top mainly is the sealing that solves gate valve, improves its working life and high voltage bearing usage requirement.
Claims (3)
1, a kind of gate valve, comprise valve body, valve seat, valve plate, valve rod, seal ring, valve gap, handle is formed, wherein valve plate top is provided with the female screw connection that is connected cooperation with threaded stem, valve plate laterally is provided with the passage that cooperates with valve seat, it is characterized in that: the top at valve gap is connected with pressure cap, run through valve rod in the middle of the pressure cap, one side is offered the longitudinal 2 observation window on the top of pressure cap, opposite side is provided with vertical inner slide, valve rod outer wall in the viewing window is provided with screw thread, and the switch demonstration cap that has been threaded, and switch shows that cap is limited in the slideway by feather key, inner chamber is provided with bearing support in the middle and lower part of pressure cap, in the bearing support there is and the fixing bearing of valve rod device.
2, gate valve according to claim 1, it is characterized in that: the longitudinal section of valve plate is a rectangular, the valve seat longitudinal section of Pei Heing also is a rectangular with it, the seal ring of valve rod and valve gap connecting part is the back seal circle, the top of sealing circle is tapered, shaft shoulder extruding on bottom and the valve rod cooperates, and is provided with Stem Mut in the bottom of seal ring and cooperates with the valve rod outside thread.
3, gate valve according to claim 1 and 2 is characterized in that: the connecting part device that slides connecting part, valve body and valve gap, valve gap and pressure cap and valve rod and valve gap, pressure cap at connecting part, valve plate and the valve seat of valve seat and valve body has seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820156108U CN201373121Y (en) | 2008-11-28 | 2008-11-28 | Gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200820156108U CN201373121Y (en) | 2008-11-28 | 2008-11-28 | Gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201373121Y true CN201373121Y (en) | 2009-12-30 |
Family
ID=41499202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200820156108U Expired - Fee Related CN201373121Y (en) | 2008-11-28 | 2008-11-28 | Gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201373121Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359653A (en) * | 2011-10-22 | 2012-02-22 | 上海埃科燃气测控设备有限公司 | Mechanism for displaying opening and closing states of electromagnetic valve and display method of mechanism |
| CN104197085A (en) * | 2014-09-05 | 2014-12-10 | 陈巧琴 | Valve with observation window |
-
2008
- 2008-11-28 CN CN200820156108U patent/CN201373121Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359653A (en) * | 2011-10-22 | 2012-02-22 | 上海埃科燃气测控设备有限公司 | Mechanism for displaying opening and closing states of electromagnetic valve and display method of mechanism |
| CN104197085A (en) * | 2014-09-05 | 2014-12-10 | 陈巧琴 | Valve with observation window |
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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: 20091230 Termination date: 20101128 |