CN2711474Y - Gate valve - Google Patents
Gate valve Download PDFInfo
- Publication number
- CN2711474Y CN2711474Y CN 200420038895 CN200420038895U CN2711474Y CN 2711474 Y CN2711474 Y CN 2711474Y CN 200420038895 CN200420038895 CN 200420038895 CN 200420038895 U CN200420038895 U CN 200420038895U CN 2711474 Y CN2711474 Y CN 2711474Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- rod
- seat
- cap
- 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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- Sliding Valves (AREA)
Abstract
The utility model discloses a novel gate valve which is convenient in observation and has a favorable sealing effect. The gate valve is composed of a valve body 1, a value seat 2, a valve plate 3, a valve rod 4, a seal ring 7, a valve cover 6 and a handle 11, the upper part of the valve plate 3 is provided with a connector of inner screw which is in screwed connection and cooperation with the valve rod 4, and the valve plate 3 is horizontally provided with a passage which cooperates with the valve seat 2. The gate valve is characterized in that the upper part of the valve cover 6 is connected with a press cap 9, the valve rod 4 penetrates the middle of the press cap 9, one side of the upper part of the press cap 9 is provided with a longitudinal observation window 13, and the other side of the upper part of the press cap 9 is provided with a longitudinal inner slide track 14, the outer wall of the valve rod 4 which is arranged in the inner of the observation window 13 is provided with screw threads and in screwed connection with a display cap of switch 10 which is restricted in the slide track 14 via a guiding key 12, the middle-lower part of the press cap 9 is provided with a bearing seat in which a bearing 8 which is fixed with the valve rod 4; the longitudinal cross section of the valve plate 3 is quadrate, and the longitudinal cross section of the valve seat 2 which cooperates with the valve plate 3 is also quadrate. The utility model can observe directly the closing state of the gate valve via the observation window, which can makes conveniently adjustment in time, and simultaneously, the improved sealing measures can raise the sealing performance of the gate valve and meet the requirement of normal usage under the condition of high pressure.
Description
One, technical field: the utility model relates to a kind of gate valve.
Two, background technique: 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.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.
Three, 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.
Its technological scheme comprises valve body 1, valve seat 2, valve plate 3, valve rod 4, seal ring 7, valve gap 6, handle 11 compositions, and 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.It is characterized in that: be 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 demonstration cap 10 that has been threaded, and switch shows that cap 10 is limited in the slideway 14 by feather key 12, inner chamber is provided with bearing support in the middle and lower part of pressure cap 9, and device has the bearing of fixing with valve rod 48 in the bearing support.The longitudinal section of valve plate 3 is a rectangular, and valve seat 2 longitudinal sections of Pei Heing also are rectangular with it.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, and is provided with Stem Mut 5 in the bottom of seal ring 7 and cooperates with valve rod 4 outside threads.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.
Adopt gate valve of the present utility model, can observe directly the gate valve closed condition by viewing window, be convenient to instant the adjustment and use, the seal approach after improving simultaneously, more can satisfy the normal use under the high-pressure situations at sealability and the working life that can improve gate valve.
Four, description of drawings: accompanying drawing is structural section figure of the present utility model.
Five, specific 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, 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 (4)
1, a kind of novel gate valve, comprise valve body (1), valve seat (2), valve plate (3), valve rod (4), seal ring (7), valve gap (6), handle (11) is formed, wherein valve plate (3) top is provided with the female screw connection that is threaded and cooperates with valve rod (4), valve plate (3) laterally is provided with the passage that cooperates with valve seat (2), it is characterized in that: be 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 wall in the viewing window (13) is 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), middle and lower part inner chamber at pressure cap (9) is provided with bearing support, in the bearing support there is and the fixing bearing (8) of valve rod (4) device.
2, novel gate valve according to claim 1 is characterized in that: the longitudinal section of valve plate (3) is a rectangular, and the valve seat of Pei Heing (2) longitudinal section also is a rectangular with it.
3, novel gate valve according to claim 1 and 2, it is characterized in that: valve rod (4) is the back seal circle with the seal ring (7) of valve gap (6) connecting part, the top of sealing circle (7) is tapered, shaft shoulder extruding on bottom and the valve rod (4) cooperates, and is provided with Stem Mut (5) in the bottom of seal ring (7) and cooperates with valve rod (4) outside thread.
4, novel gate valve according to claim 1 and 2 is characterized in that: 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420038895 CN2711474Y (en) | 2004-03-03 | 2004-03-03 | Gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420038895 CN2711474Y (en) | 2004-03-03 | 2004-03-03 | Gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2711474Y true CN2711474Y (en) | 2005-07-20 |
Family
ID=36192578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420038895 Expired - Fee Related CN2711474Y (en) | 2004-03-03 | 2004-03-03 | Gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2711474Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013177772A1 (en) * | 2012-05-31 | 2013-12-05 | 浙江盾安阀门有限公司 | Open and closed indication device for valve |
-
2004
- 2004-03-03 CN CN 200420038895 patent/CN2711474Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013177772A1 (en) * | 2012-05-31 | 2013-12-05 | 浙江盾安阀门有限公司 | Open and closed indication device for 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 |