CN201487265U - Full sealed zero leakage gate valve - Google Patents

Full sealed zero leakage gate valve Download PDF

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Publication number
CN201487265U
CN201487265U CN2009201957503U CN200920195750U CN201487265U CN 201487265 U CN201487265 U CN 201487265U CN 2009201957503 U CN2009201957503 U CN 2009201957503U CN 200920195750 U CN200920195750 U CN 200920195750U CN 201487265 U CN201487265 U CN 201487265U
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CN
China
Prior art keywords
valve
flashboard
hanger
valve rod
gate
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
Application number
CN2009201957503U
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Chinese (zh)
Inventor
葛天民
Original Assignee
方建生
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Publication date
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Priority to CN2009201957503U priority Critical patent/CN201487265U/en
Application granted granted Critical
Publication of CN201487265U publication Critical patent/CN201487265U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a full sealed zero leakage gate valve, which comprises a valve body, an upper seal cap, a hand wheel, a valve rod and a gate disc, wherein a gate disc hanging frame is arranged inside a valve cavity of the gate valve, the gate disc is fixed at the lower end of the gate disc hanging frame, and the lower end of the valve rod penetrates through the upper seal cap to be connected to the gate disc hanging frame in a linkage manner to convert rotation motion of the hand wheel to linear motion of the gate disc hanging frame. A corrugated pipe shape elastic expansion piece is arranged between a valve opening of the valve body and the gate disc hanging frame, and two ends of the elastic expansion piece are respectively connected to the valve opening and the gate disc hanging frame in a seal manner to separate the gate disc from the upper seal cap. The full sealed zero leakage gate valve modifies motive seal in the prior art into static seal, adopts the elastic expansion piece to separate the gate disc from the upper seal cap in order to achieve full sealed zero leakage, thereby greatly increasing sealing property and enlarging application field.

Description

Full-seal zero-leakage gate valve
Technical field
The utility model relates to a kind of valve, particularly full-seal zero-leakage gate valve.
Background technique
Present gate valve valve gap and valve body bolt. nut is connected and forms Seal cage, in order to splendid attire by the medium of transporting with provide flashboard to open and close activity space.Yet this Seal cage has two leak sources, one is the joint of valve gap and valve body, for preventing to leak, have to be clipped in the place, slit with sealing gasket goes to block up, another place is that valve rod is done rotation (formula toward complex line) motion and produced matching gap too at the stuffing box place, also have to use the filler leak stopping, but this is a kind of motive sealing mode.There is the situation of sealing material wearing and tearing on the one hand in the motive sealing mode, and the long-time running meeting strengthens the slit, reduces sealing effect, can only lean on the method for maintain and replace filler to go to keep sealability; On the other hand, because there is relative movement in sealing surface, the medium of trace can ooze out along with motion, when the transporting medium temperature raises, therefore the pressure increase makes that the working environment of gate valve is very harsh, can not carry poisonous, harmful, easy dangerous medium such as right, explosive and deep-etching gas.
The model utility content
The purpose of this utility model is to provide a kind of gate valve of seamless full-seal zero-leakage for overcoming the deficiencies in the prior art.
In order to achieve the above object, the technical solution that the utility model provides is: a kind of full-seal zero-leakage gate valve, comprise valve body, upper cover, handwheel, valve rod and wedge shape flashboard, it is characterized in that: described gate valve also is provided with the flashboard hanger, described flashboard hanger Spielpassung is arranged in the valve pocket that forms between upper cover and the valve body, described flashboard is fixed on the lower end of flashboard hanger, handwheel is fixed on the valve rod upper end, described valve rod lower end is passed upper cover and is connected with the flashboard hanger, and rotatablely moving of handwheel changed into the straight line motion of flashboard hanger, be provided with corrugated tube shape elastic telescopic spare between the valve port of described valve body and the flashboard hanger, described elastic telescopic spare two ends are tightly connected with valve port and flashboard hanger respectively flashboard and upper cover are separated.
Compared with prior art, the beneficial effects of the utility model are: by having set up a flashboard hanger and being different from the Placement of prior art, rotatablely moving of handwheel changed into the straight line motion of flashboard hanger, make the flashboard hanger drive flashboard and only do the vertical axial lifting, simultaneously between the valve port of valve body and flashboard hanger, be provided with corrugated tube shape elastic telescopic spare, elastic telescopic spare two ends are tightly connected with valve port and flashboard hanger respectively flashboard and upper cover are separated, motive sealing of the prior art is improved to static seal, elastic telescopic spare with can adopt being connected of valve port and flashboard hanger fixedly connected as the welding etc., can reach full-seal zero-leakage, greatly improve sealability, enlarged application.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Accompanying drawing 1 is the utility model specific embodiment 1 structure sectional view;
Accompanying drawing 2 is the utility model specific embodiment 2 structure sectional views;
Embodiment
Concrete enforcement 1: as shown in Figure 1, full-seal zero-leakage gate valve still comprises valve body 1, upper cover 2, handwheel 3, valve rod 4 and wedge shape flashboard 5.Upper cover 2 is preferably tubbiness, and the valve port diameter on diameter and the valve body 1 matches up at the bucket end, make with valve body 1 between the valve pocket of formation enough spaces are arranged, being connected between upper cover 2 and the valve body 1 can be that flange connects, and also can be welding, adopts the latter in the utility model.The center on upper cover 2 tops is provided with valve rod hole, the position corresponding with valve rod hole is provided with nut 6 on the upper cover 2, and valve rod 4 tops are provided with the swivel nut 7 that matches with nut 6, and valve rod 4 is installed on the upper cover 2 by swivel nut 7, nut 6 cooperations, valve rod 4 lower ends enter in the valve pocket, and handwheel 3 is fixed on valve rod 4 upper ends.Also be provided with flashboard hanger 8 in the valve pocket, flashboard hanger 8 is whole cylindrical, top is provided with discoid joint 9, the diameter of discoid joint 9 is greater than the caliber of elastic telescopic spare 10 but less than upper cover 2 internal diameters flashboard hanger 8 Spielpassung is arranged in the valve pocket that forms between upper cover 2 and the valve body 1, the upper end of flashboard hanger 8 is provided with the axial blind hole with valve rod 4 lower end Spielpassung, flashboard 5 is fixed on the lower end of flashboard hanger 8, insert in the blind hole valve rod 4 lower ends, being equipped with identical cross section on the relevant position of valve rod 4 surfaces and blind pore wall is that semicircular annular groove 11 is formed the ring-type pipeline space, being provided with a plural number steel ball 12 in the looped pipeline space makes valve rod 4 and flashboard hanger 8 constitute circumferentially movable being connected of axial restraint, in conjunction with swivel nut 7 on the valve rod 4, nut 6 cooperations are threaded with upper cover 2 and constitute described flashboard hanger 8 axial elevator mechanisms, rotatablely moving of handwheel 3 become the straight line motion of flashboard hanger 8, make flashboard hanger 8 drive flashboard 5 and only do the vertical axial lifting, corrugated tube shape elastic telescopic spare 10 two ends are tightly connected with valve port and flashboard hanger 8 respectively flashboard 5 and upper cover 2 are separated, can take the mode of whole mutually weldering system to be connected between elastic telescopic spare 10 two ends and valve port and the flashboard hanger 8, eliminate original valve gap and valve body 1 joint gap.The extending amount of corrugated tube shape elastic telescopic spare 10 is greater than flashboard hanger 8 strokes, and selects for use solid corrosion-resistant material to make.
The working principle of full-seal zero-leakage gate valve: rotate handwheel 3, under swivel nut on the valve rod 47 and nut 6 interact, valve rod 4 is descending, promoting flashboard hanger 8 by steel ball moves down, rotating elastomer of while, downward compressive deformation, at this moment the closure member flashboard 5 that is located on the flashboard hanger 8 moves down, and contacts with the both sides sealing surface of seat and has finished closing function.Counterrotating handwheel 3, under swivel nut on the valve rod 47 and nut 6 interacted, valve rod 4 was up, by moving on the steel ball drive flashboard hanger 8, at this moment the closure member flashboard 5 that is located on the flashboard hanger 8 moves with the same, breaks away from sealing surface of seat and finishes, and finishes the valve opening function.
Concrete enforcement 2: it can also be as shown in Figure 2 that the valve rod 4 of full-seal zero-leakage gate valve is connected with flashboard hanger 8: promptly be provided with valve stem casing 13 on upper cover 2, valve rod 4 lower ends are passed upper cover 2 and are entered in the valve pocket, valve rod 4 and valve stem casing 13 endoporus Spielpassung, being equipped with identical cross section on the relevant position of valve rod 4 surfaces and valve stem casing 13 inner hole walls is that semicircular annular groove 11 is formed the ring-type pipeline space, is provided with a plural number steel ball 12 in the looped pipeline space and makes valve rod 4 and valve stem casing 13 endoporus constitute circumferentially movable being connected of axial restraint; Valve rod 4 lower ends are provided with screw thread, flashboard hanger 8 upper ends are provided with the axial screw that matches with valve rod 4 lower ends, valve rod 4 is threaded with flashboard hanger 8, is provided with axially directed structure between flashboard hanger 8 and the valve cavity wall and equally also can reaches the straight-line purpose that rotatablely moving of handwheel 3 is become flashboard hanger 8.
The utility model is by being improved to static seal with motive sealing, make that between the valve port of valve body 1 and flashboard hanger 8 corrugated tube shape elastic telescopic spare 10 being set becomes possibility, gate valve can reach full-seal zero-leakage, greatly improved sealability, enlarge application, can carry poisonous, harmful, easy dangerous medium such as right, explosive and deep-etching gas.

Claims (4)

1. full-seal zero-leakage gate valve, comprise valve body, upper cover, handwheel, valve rod and wedge shape flashboard, it is characterized in that: described gate valve also is provided with the flashboard hanger, described flashboard hanger Spielpassung is arranged in the valve pocket that forms between upper cover and the valve body, described flashboard is fixed on the lower end of flashboard hanger, handwheel is fixed on the valve rod upper end, described valve rod lower end is passed upper cover and is connected with the flashboard hanger, and rotatablely moving of handwheel changed into the straight line motion of flashboard hanger, be provided with corrugated tube shape elastic telescopic spare between the valve port of described valve body and the flashboard hanger, described elastic telescopic spare two ends are tightly connected with valve port and flashboard hanger respectively flashboard and upper cover are separated.
2. full-seal zero-leakage gate valve according to claim 1, it is characterized in that: the upper end of described flashboard hanger is provided with the axial blind hole with valve rod lower end Spielpassung, insert in the blind hole valve rod lower end, being equipped with identical cross section on the relevant position of described stem surface and blind pore wall is that semicircular annular groove is formed the ring-type pipeline space, being provided with a plural number steel ball in the described looped pipeline space makes valve rod and flashboard hanger constitute circumferentially movable being connected of axial restraint, described valve rod top is provided with swivel nut, upper cover is provided with nut, and described valve rod passes through swivel nut, the nut cooperation is threaded with upper cover and rotatablely moving of handwheel is changed into the straight line motion of flashboard hanger.
3. full-seal zero-leakage gate valve according to claim 1, it is characterized in that: described upper cover is provided with valve stem casing, described valve rod lower end is passed upper cover and is entered in the valve pocket, valve rod and valve stem casing endoporus Spielpassung, being equipped with identical cross section on the relevant position of described stem surface and valve stem casing inner hole wall is that semicircular annular groove is formed the ring-type pipeline space, is provided with a plural number steel ball in the described looped pipeline space and makes valve rod and valve stem casing endoporus constitute circumferentially movable being connected of axial restraint; Described valve rod lower end is provided with screw thread, described flashboard hanger upper end is provided with the axial screw that matches with the valve rod lower end, described valve rod is threaded with the flashboard hanger, is provided with the straight line motion that axially directed structure changes rotatablely moving of handwheel into the flashboard hanger between described flashboard hanger and the valve cavity wall.
4. according to claim 1 or 2 or 3 described full-seal zero-leakage gate valves, it is characterized in that: described flashboard hanger integral body is cylindrical, and top is provided with discoid joint, fixedlys connected with discoid joint with valve port respectively in described elastic telescopic spare two ends.
CN2009201957503U 2009-09-10 2009-09-10 Full sealed zero leakage gate valve Expired - Lifetime CN201487265U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201957503U CN201487265U (en) 2009-09-10 2009-09-10 Full sealed zero leakage gate valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201957503U CN201487265U (en) 2009-09-10 2009-09-10 Full sealed zero leakage gate valve

Publications (1)

Publication Number Publication Date
CN201487265U true CN201487265U (en) 2010-05-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009201957503U Expired - Lifetime CN201487265U (en) 2009-09-10 2009-09-10 Full sealed zero leakage gate valve

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CN (1) CN201487265U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103366853A (en) * 2013-07-15 2013-10-23 西北核技术研究所 Generation device of controllable isotopic neutron source
CN111350858A (en) * 2020-04-14 2020-06-30 苏州优必隆精密机械有限公司 Connecting structure of valve body and valve cover

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103366853A (en) * 2013-07-15 2013-10-23 西北核技术研究所 Generation device of controllable isotopic neutron source
CN103366853B (en) * 2013-07-15 2016-04-13 西北核技术研究所 A kind of generation device of controllable isotopic neutron source
CN111350858A (en) * 2020-04-14 2020-06-30 苏州优必隆精密机械有限公司 Connecting structure of valve body and valve cover

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20100526

Effective date of abandoning: 20090910

EE01 Entry into force of recordation of patent licensing contract

Assignee: Shenggui Valve Co., Ltd.

Assignor: Fang Jiansheng

Contract record no.: 2011330000606

Denomination of utility model: Full-seal zero-leakage gate valve

Granted publication date: 20100526

License type: Exclusive License

Record date: 20110526

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model