CN1035565C - Gate valve balance device - Google Patents
Gate valve balance device Download PDFInfo
- Publication number
- CN1035565C CN1035565C CN93120967A CN93120967A CN1035565C CN 1035565 C CN1035565 C CN 1035565C CN 93120967 A CN93120967 A CN 93120967A CN 93120967 A CN93120967 A CN 93120967A CN 1035565 C CN1035565 C CN 1035565C
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- China
- Prior art keywords
- valve
- flap
- valve rod
- open
- gate valve
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- Expired - Fee Related
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- Details Of Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The present invention relates to a balancing device for a gate valve, which is composed of a valve rod, a retaining washer, a valve clack cover, a valve clack and a main passage. The balancing device is used for gate valves with large calibers, medium calibers, small calibers, high pressure, medium pressure and low pressure. A rotary body on the upper part of a closing piece-valve clack is provided with a threaded through hole, a wedge-shaped body on the lower part is provided with a medium cavity, the left side is a wedge-shaped sealing surface which is provided with a main pressure relief hole, and the bottom wall on the right side is provided with an auxiliary pressure relief hole. A threaded section at the front end of a valve rod penetrates through a retaining washer with a through hole and outer threads for the valve clack cover, is screwed in a locking nut and the back end of an opening and closing piece, and is tightened into the valve clack; the valve clack cover is screwed in the valve clack and is arranged in a valve body. The left side of the valve clack is sealed with the main passage, and the side surface of the opening and closing piece at the front end of the valve rod is sealed with an inner cavity of the valve clack; the upper end surface of the head of the valve rod is sealed with the valve clack cover.
Description
Valve kind of the present invention is the balance 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, except that being used for media such as steam 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.
The objective of the invention is to design a kind of new balance device that is applicable to large, medium and small bore, high, medium and low voltage gate valve, substitute existing closure member wedge shape, parallel type flashboard.The inventor also is " gate valve internal bypass device " 92245588, No. 0 patentees, the present invention is to the development of utility model patent 92245588, No. 0 " gate valve internal bypass device " and further improves attached summary figure, the sealing of this device flap lid and valve rod front end head upper-end surface, make it reach selfsealings, self balancing, further rationally perfect, make the reality that creates of small-bore gate valve Equilibrator owing to sealing means.
Technical solution of the present invention:
The present invention sees figure: Fig. 1 is open-shut device and the directly sealing mutually of main relief hole, and Fig. 2 seals with the flap inner chamber mutually for open-shut device.The present invention has designed a kind of structure of novelty, its essence is that closure member is a balance device one flap.Feature is on flap right side, left side and the diapire relief hole to be arranged all.Design one open-shut device its center be the sealing surface of projection in flap, and open-shut device is installed in valve rod front end head side, if ball then directly seals with the main relief hole in flap inboard mutually for sphere or direct and inner chamber seals mutually.Valve rod front end head upper-end surface and the sealing mutually of flap lid.
In order to reach purpose of the present invention, 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, and the upper-end surface has and the flap lid sealing surface of sealing mutually.Floor clip 2 is pressed the JB1728-75 design, is a rounded washers 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, its mesopore bottom is the sealing surface that chamfering is arranged, the top is a sphere shape sealing surface.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 has been made internal thread and is covered 3 outside threads with flap and screw hollow rotating body mutually, the left surface 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.Make in the left side and main relief hole or flap inner chamber are realized the sealing surface of sealing.
The present invention has kept existing Gate-valve sealing advantage preferably, owing to adopted balance device, when sealing main relief hole, sealing surface is reduced to one by original two, and the flap left and right side seals mutually with the body cavity left and right side during closed cavity.Because the power of open, 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.
Closure member primary sealing area of the present invention 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 present invention opens light, and release is steady, safety.
The present invention is simple in structure, makes easy to maintenancely, and the life-span is long.
The drawing explanation of accompanying drawing 1-2:
Fig. 1: open-shut device seals mutually with the main relief hole in the interior left side of valve petal body, and the valve petal body left surface seals mutually with the body cavity left surface.Because when the similar figures open-shut device that the geometrical shape of valve petal body inner chamber and the geometrical shape of open-shut device profile are pair of matched closes seals mutually with the main relief hole in the interior left side of valve petal body, the secondary relief hole on right side also seals mutually with open-shut device, and the valve petal body left surface seals mutually with the body cavity left surface.Whole main passage is closed.
Fig. 2: open-shut device directly seals mutually with the valve petal body inner chamber, and the valve petal body left and right side seals mutually with the body cavity left and right side.Because the geometrical shape of body cavity and the geometrical shape of valve petal body profile are the similar figures that pair of matched is closed.The valve petal body left and right side sealed mutually with the body cavity left and right side when open-shut device directly sealed mutually with inner chamber, and whole main passage is closed.
Below in conjunction with accompanying drawing the present invention is further described:
The present invention each part mutual alignment and contact:
Floor clip 2 inner hole sleeves cover 3 threaded end at flap; Valve rod 1 threaded end penetrates flap and covers 3 endoporus, locking nut 5 screws in valve rod 1 threaded end, open-shut device 6 internal threads screw in valve rod 1 outside thread, adjust its position, locking nut and open-shut device 6 are also tight mutually then, at last the external thread rotary of the internal thread of flap 4 and flap lid 3 is merged floor clip 2 respectively to flap 4, flap covers 3 direction bendings.
Open-shut device 6 of the present invention can be wedge-like body, cylindrical body, cone or spheroid.Its sealing position can be sphenoid surface, plane, cylinder, circular cone or sphere.Open-shut device 6 can be made with valve rod is whole, also can the segmentation manufacturing, make and the flap lid sealing surface of sealing mutually with whole its upper-end surface of making of valve rod.Flap 4 can be that band flap lid form also can be the T-slot form.
One, medium of the present invention 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 open-shut device, rotation hand wheel, valve rod drives main valve clack, opens according to the size realization of required flow.
Claims (6)
1, a kind of by valve rod, floor clip, the flap lid, flap, the gate valve balance device that the main passage is formed, closure member is a flap; Feature of the present invention is the main relief hole that drills and reams on the left of the flap, several secondary relief holes are arranged on flap diapire right side wall, valve rod front end head side, if ball is then for the main relief hole in left side in sphere and the flap seals mutually or directly seals mutually with inner chamber, valve rod front end head upper-end surface and flap cover mutually and seal; Locking nut screws in valve rod front end thread section top, and 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 balance device is characterized in that open-shut device is a spheroid.
3, according to claim 1, described gate valve balance device is characterized in that open-shut device is a cylindrical body.
4, according to claim 1, described gate valve balance device is characterized in that open-shut device is a cone.
5, according to claim 1, described gate valve balance device is characterized in that open-shut device is a wedge-like body.
6, according to claim 1, described gate valve balance device is characterized in that flap lid mesopore bottom is the sealing surface that chamfering is arranged, and the top is spherical sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93120967A CN1035565C (en) | 1993-12-19 | 1993-12-19 | Gate valve balance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93120967A CN1035565C (en) | 1993-12-19 | 1993-12-19 | Gate valve balance device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1103938A CN1103938A (en) | 1995-06-21 |
| CN1035565C true CN1035565C (en) | 1997-08-06 |
Family
ID=4993495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93120967A Expired - Fee Related CN1035565C (en) | 1993-12-19 | 1993-12-19 | Gate valve balance device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035565C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008141545A1 (en) * | 2007-05-24 | 2008-11-27 | Liyan Zhu | A piloted middle-high pressure gate valve |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115157A (en) * | 2013-03-06 | 2013-05-22 | 江苏苏盐阀门机械有限公司 | Self-balance type flat gate valve |
| PL3362712T3 (en) * | 2015-10-13 | 2020-07-27 | Avk Holding A/S | A method for manufacturing fluid control means |
| CN105422890A (en) * | 2015-12-17 | 2016-03-23 | 上海诺特飞博燃烧设备有限公司 | Two-step opening-closing type gate valve |
| CN109404554B (en) * | 2018-12-13 | 2023-08-25 | 无锡市亚迪流体控制技术有限公司 | Wedge-shaped parallel gate valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4281819A (en) * | 1978-03-23 | 1981-08-04 | Linder Morris B | Balanced stem gate valve |
| CN2145292Y (en) * | 1992-12-30 | 1993-11-03 | 徐明林 | Auto-pressure compensation no-leak sluice valvee |
-
1993
- 1993-12-19 CN CN93120967A patent/CN1035565C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4281819A (en) * | 1978-03-23 | 1981-08-04 | Linder Morris B | Balanced stem gate valve |
| CN2145292Y (en) * | 1992-12-30 | 1993-11-03 | 徐明林 | Auto-pressure compensation no-leak sluice valvee |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008141545A1 (en) * | 2007-05-24 | 2008-11-27 | Liyan Zhu | A piloted middle-high pressure gate valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1103938A (en) | 1995-06-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 |