CN2160800Y - Internal by-pass device for sluice valve - Google Patents
Internal by-pass device for sluice valve Download PDFInfo
- Publication number
- CN2160800Y CN2160800Y CN 92245588 CN92245588U CN2160800Y CN 2160800 Y CN2160800 Y CN 2160800Y CN 92245588 CN92245588 CN 92245588 CN 92245588 U CN92245588 U CN 92245588U CN 2160800 Y CN2160800 Y CN 2160800Y
- Authority
- CN
- China
- Prior art keywords
- flap
- valve rod
- open
- valve
- gate valve
- 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 - Lifetime
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- Sliding Valves (AREA)
Abstract
The utility model discloses an internal by-pass device which is suitable for sluice valves with large calibers or medium calibers and high pressure, or medium pressure or low pressure, and is suitable for parts of sluice valves with small calibers and high pressure, or medium pressure or low pressure. The internal by-pass device is characterized in that the left side of a valve clack is engaged with a main decompression hole, and the end portion of a valve rod is provided with an opening and closing member. The main decompression hole is sealed by the opening and closing member, and the right side and the bottom wall of the valve clack are provided with a plurality of auxiliary decompression holes. The opening and closing member is screwed into the thread end of the valve rod and is tightly fastened with a locking nut.
Description
The utility model valve kind is the internal bypass device that gate valve is used specifically.
It is better that present gate valve class valve is used for opening-closing process sealing surface sealability, has certain adjusting function, the valve that valve rod rises can be from the height of valve rod lifting, judge the size of regulated quantity, be suitable for making bigbore valve, remove and be used for steam, outside the media such as oil product, also be applicable to and contain granular and the bigger medium of viscosity, and be suitable for doing the valve of atmospheric valve and rough vacuum system, but, be not easy to behind the sealing surface wear repair, and complicated operation easily goes wrong because processing is complicated, limited its development, existed trend by other valve kind substitutes or part substitutes.
To be that design is a kind of new be applicable to that big medium caliber, part are small-bore, the internal bypass device of high, medium and low voltage gate valve to the purpose of this utility model, substitutes existing closure member wedge shape, the parallel type flashboard.
Technical solution of the present utility model:
The utility model (seeing figure) has designed a kind of structure of novelty, its essence is that closure member is an internal bypass device one flap.Feature is on flap right side, left side and the diapire relief hole to be arranged all.Its center of design one open-shut device is the sealing surface of projection in flap, and open-shut device is installed in valve rod front end head side, directly seals mutually with the inboard main relief hole of flap if ball then is a sphere.
In order to reach the purpose of this utility model, designed flap lid 3 simultaneously, floor clip 2, flap 4, locking nut 5, open-shut device 6.
Their structures separately are:
Valve rod 1 is by the NBS design, and front end is a flush end, the outside thread that one section of design can screw mutually with open-shut device on the front end screw rod.Floor clip 2 is pressed the JB1728-75 design, is a garden shape packing ring that mesopore is arranged, and its mesopore can allow flap lid threaded end pass through.Flap lid 3 press JB1726-75 and is designed, in the mesopore that valve rod 1 is passed through is arranged, the internal thread that can screw mutually with the valve rod upper external thread in addition.Flap 4 is how much wedge-like bodys that lumen is arranged, and the wedge shape flashboard face that can realize sealing with the main passage is made in the left side, and the right side is the vertical plane perpendicular to valve body two-port axis.Top is made internal thread and is covered the hollow rotating body that 3 outside threads screw mutually with flap, the left surface center main relief hole 7 that drills and reams, and right flank and diapire have several secondary relief holes, and the shape of lumen is similar with wedge-like body, and physical dimension is proportional.
Open-shut device 6 is wedge-like bodys that a lumen has internal thread and valve rod end outside thread to screw mutually, and shape is similar with flap 4 lumens, and physical dimension is proportional.The sealing surface that make in the left side and the realization of main relief hole seals.
The invention of this device has produced gate valve of new generation---the balanced type gate valve.
The utility model has kept existing Gate-valve sealing advantage preferably, owing to adopted the internal bypass device, sealing surface is reduced to one by original two, because the power of opening, closing reduces, the rigidity requirement of strength of valve rod support has reduced, thereby the volume of support valve rod can reduce.Thereby reduced materials consumption, reduced machining period.
The utility model closure member primary sealing area since adopted wedge shape flashboard and valve base chamber wedge be used for close, simultaneously right flank is subjected to the effect of hydrodynamic pressure again, thereby stressing conditions improves, and closes laborsavingly, sealing force obtains amplifying.
The utility model unlatching is light, release steady, safety.
The utility model is simple in structure, makes easy to maintenancely, and the life-span is long.
The utility model each part mutual alignment and contact:
Open-shut device 6 of the present utility model can be wedge-like body, Cylinder, cone or spheroid.Its sealing position can be sphenoid surface, plane, garden post, garden awl or sphere.Open-shut device 6 can be made with valve rod is whole, also can the segmentation manufacturing, and flap 4 can be that band flap lid form also can be the T-slot form.
Below in conjunction with accompanying drawing the utility model is further described:
One, the utility model medium enters the left side outflow by the flap right side, medium flows into by main passage 9 inlets, rotation hand wheel, actuate valve stem 1 open-shut device 6 relative valve rod 1 rotation and divertical motions, make main passage 9 and main relief hole 7 successively close, media flow direction and shutdown system direction are at an angle of 90 when closing.
Two, medium flows into by the main passage inlet, counterrotating handwheel valve rod drives open-shut device 6 and moves upward, medium is by the gap between secondary relief hole 8 and flap lid 3 and the valve rod 1, enter 9 outlets of main relief hole flow pass, progressively release is when medium inlet and outlet pressure roughly during balance, locking nut contacts with the lower end surface of flap lid 3 in the upper-end surface of secondary flap, rotation hand wheel, valve rod drives main valve clack, opens according to the size realization of required flow.
Claims (5)
1, a kind of gate valve internal bypass device of forming by valve rod, floor clip, flap lid, flap, main passage, closure member is a flap, feature of the present utility model is center, the flap left side main relief hole that drills and reams, several secondary relief holes are arranged on flap diapire right side wall, valve rod front end head side, if ball then seals mutually for main relief hole on the left of in sphere and the flap, locking nut screws in valve rod front end thread section top, open-shut device rear end tapped hole screws in valve rod front end thread section bottom, and also tight with locking nut.
2, according to claim 1, described gate valve internal bypass device is characterized in that open-shut device is a spheroid.
3, according to claim 1, described gate valve internal bypass device is characterized in that open-shut device is a Cylinder.
4, according to claim 1, described gate valve internal bypass device is characterized in that open-shut device is a cone.
5, according to claim 1, described gate valve internal bypass device is characterized in that open-shut device is a wedge-like body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92245588 CN2160800Y (en) | 1992-12-25 | 1992-12-25 | Internal by-pass device for sluice valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92245588 CN2160800Y (en) | 1992-12-25 | 1992-12-25 | Internal by-pass device for sluice valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2160800Y true CN2160800Y (en) | 1994-04-06 |
Family
ID=33784490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92245588 Expired - Lifetime CN2160800Y (en) | 1992-12-25 | 1992-12-25 | Internal by-pass device for sluice valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2160800Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679258A (en) * | 2018-08-15 | 2018-10-19 | 永阀门集团有限公司 | A kind of regulation ball valve |
| CN115253965A (en) * | 2022-07-20 | 2022-11-01 | 武汉船舶职业技术学院 | Device for chemical production by using geothermal energy |
-
1992
- 1992-12-25 CN CN 92245588 patent/CN2160800Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679258A (en) * | 2018-08-15 | 2018-10-19 | 永阀门集团有限公司 | A kind of regulation ball valve |
| CN115253965A (en) * | 2022-07-20 | 2022-11-01 | 武汉船舶职业技术学院 | Device for chemical production by using geothermal energy |
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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 | ||
| CX01 | Expiry of patent term |