CN202851994U - Stop valve - Google Patents

Stop valve Download PDF

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Publication number
CN202851994U
CN202851994U CN 201220579787 CN201220579787U CN202851994U CN 202851994 U CN202851994 U CN 202851994U CN 201220579787 CN201220579787 CN 201220579787 CN 201220579787 U CN201220579787 U CN 201220579787U CN 202851994 U CN202851994 U CN 202851994U
Authority
CN
China
Prior art keywords
valve
seat
valve body
cover
stop
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
Application number
CN 201220579787
Other languages
Chinese (zh)
Inventor
程汉章
Original Assignee
程汉章
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 程汉章 filed Critical 程汉章
Priority to CN 201220579787 priority Critical patent/CN202851994U/en
Application granted granted Critical
Publication of CN202851994U publication Critical patent/CN202851994U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to the technical field of pipeline valves, in particular to a stop valve which comprises a valve body, a valve cover, a valve rod, a valve seat and a valve clack. The valve seat is arranged in a groove of the valve body, the valve clack is arranged at the lower end of the valve rod, and the valve clack and the valve rod are fixedly connected into a whole through a valve clack cover. The upper end of the valve rod penetrates through an upper sealing seat, a packing, a packing bushing and a packing press plate, and then is connected with a valve rod nut on the upper end of the valve cover in a thread fit mode, wherein the upper sealing seat, the packing, the packing bushing and the packing press plate are installed in the valve cover. A hand wheel is fixedly connected with the valve rod nut, the valve cover is arranged on the upper portion of the valve body, and a bipyramid ring is arranged between the valve cover and the valve body. According to the stop valve, rubber on the surface of the valve clack is sealed with a sphere sealing plane of the valve seat in a matching mode, and the valve cover and the valve body are sealed with each other through the bipyramid ring. The stop valve has the advantages of being simple in sealing structure, low in manufacturing cost and good in sealing performance.

Description

A kind of stop valve
Technical field
The utility model relates to the pipeline valve technical field, particularly a kind of stop valve.
Background technique
Stop valve is a kind of in many pipeline valves, is mainly used in controlling the by force fluid stopping of liquid medium in the pipeline, is widely used.Force the fluid stopping sealing valve because stop valve belongs to, so when valve closing, must exert pressure to flap, do not leak to reach sealing surface.The sealing pair of existing stop valve is made of at the sealing surface of valve body and the sealing gasket of flap built-up welding usually, sealing gasket is fixed on the flap by bolt and packing ring, because bolt is loosening because the impact that is subject to for a long time medium produces, and breaks away from gradually the sealing effect that flap affects valve under the sealing gasket thereby make.Therefore, for the existing defective of existing stop valve and deficiency, design a kind of low cost, the good stop valve of usability extremely is necessary.
The model utility content
The purpose of this utility model is for the deficiencies in the prior art, provide a kind of simple in structure, fabricating cost is low, the stop valve that usability is good.
For achieving the above object, the utility model by the following technical solutions.
A kind of stop valve described in the utility model, it comprises valve body, valve gap, valve rod, valve seat and flap, described valve seat is threaded connection in the groove that is fixed on valve body, described flap is located at the lower end of valve rod, connect as one by valve clack cover and valve rod, upper seal support is passed in the upper end of described valve rod, filler, filler pressing sleeve and hold-down grid and the Stem Mut that is fixed on the valve gap top are threaded connection together, the top that described valve gap is located at valve body is connected and fixed by hexagon head bolt and hexagon nut and is integrated, described Stem Mut is located in the groove at valve gap top, its internal thread is connected with the trapezoidal thread of valve rod upper end, and top is connected with handwheel, and Stem Mut is fixed in the valve gap by bearing gland.
Further, the upper and lower of described Stem Mut is located at respectively thrust ball bearing, and thrust ball bearing is fixed on the top of valve gap by bearing gland.
Further, described valve gap and valve seal packing ring adopt the bipyramid ring.
Further, the sealing surface of described valve seat is processed into spherical shape.
Further, the outer surface of described flap is rubber-coated.
After adopting said structure, the utility model beneficial effect is: the utility model flap appearance is surrounded by rubber, sealability reliable and difficult drop-off and wearing and tearing, when flap contacted with sealing surface of seat, the rubber on the flap produces seal compression made valve be in sealing state; In addition, adopt biconical ring seal between valve gap and the valve body, the bipyramid ring can rely on the pressure generation resiliently deformable of body cavity medium to make the sealing between valve gap and the valve body more reliable.
Description of drawings
Fig. 1 is the utility model part section structural representation.
Fig. 2 is bipyramid ring cross-sectional view.
Among the figure:
1, valve body 2, valve seat 3, flap 4, valve clack cover
5, valve rod 6, upper seal support 7, bipyramid ring 8, valve gap
9, stud 10, hexagon nut I 11, filler 12, filler pressing sleeve
13, hold-down grid 14, swing bolt 15, hexagon nut II 16, thrust ball bearing
17, Stem Mut 18, bearing gland 19, handwheel 20, locking nut
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Extremely shown in Figure 2 such as Fig. 1, a kind of stop valve described in the utility model, it comprises valve body 1, valve gap 8, valve rod 5, valve seat 2 and flap 3, above-mentioned several parts consist of the utility model agent structures.
The top that described valve gap 8 is located at valve body 1 is fixed together by stud 9 and hex head bolt I 10, the bottom of valve gap 8 is provided with upper seal support 6, filler 11, filler pressing sleeve 12 and hold-down grid 13 have consisted of the upper sealing mechanism of valve, described upper seal support 6 is threaded connection and is fixed in the valve gap 8, its top is respectively equipped with filler 11 from bottom to top, filler pressing sleeve 12 and hold-down grid 13, the top of described filler pressing sleeve 12 is made as spherical shape and hold-down grid 13 is worked in coordination, hold-down grid 13 is fixed on the valve gap 8 by swing bolt 14 and hexagon nut II 15, and the upper sealing effect of valve can lead to the impacting force of hold-down grid 13 and valve body 1 interior medium are strengthened sealability to the pressure of upper seal support 6; The top of described valve gap 8 is provided with Stem Mut 17, thrust ball bearing 16 and bearing gland 18, the inner chamber place of described Stem Mut 17 is provided with trapezoidal thread and is threaded with valve rod 5, its top is provided with cubic step and can works in coordination with handwheel 19 and be connected, described thrust ball bearing 16 lays respectively at the upper and lower of the boss of Stem Mut 17, can reduce the open and close torque of valve when valve opens and closes operation, thrust ball bearing 16 and Stem Mut 17 are fixed in the top end of valve gap 8 by bearing gland 18; Be provided with bipyramid ring 7 in order to strengthen the sealing effect that is connected between valve gap 8 and the valve body 1 at both grooves, bipyramid ring 7 can rely on the pressure of medium to make the cooperation between the three more tight, increases the sealability of valve gap 8 and valve body 1.
The two ends of described valve body 1 are respectively equipped with import and outlet end, medium flow to the outlet port of valve body 1 from bottom to top from the entrance point of valve body 1, be provided with valve seat 2 in the intermediate portion of valve body 1, the sealing surface of described valve seat 2 is spherical shape, valve seat 2 is by being fixed in the valve body 1 with being threaded of valve body 1 groove, the top of valve seat 2 is provided with flap 3, the outer surface of described flap 3 is rubber-coated, flap 3 is fixed on the lower end of valve rod 5 by valve clack cover 4, the upper end of described valve rod 5 is by the upper seal support 6 at place, valve gap 8 bottoms, filler 11, filler pressing sleeve 12 and hold-down grid 13 arrive the upper end of valve gap 8 and carry out screw-thread fit with Stem Mut 17 and be connected, the Stem Mut 17 outer handwheels 19 that are provided with, handwheel 19 is connected to one by locking nut 20, and rotatable handwheel 19 drives the upper of flap 3, lower motion realizes the keying effect of valve.
The above only is preferred embodiments of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.

Claims (5)

1. stop valve, it comprises valve body (1), valve gap (8), valve rod (5), valve seat (2) and flap (3), it is characterized in that: described valve seat (2) is fixedly connected in the groove of valve body (1), described flap (3) is located at the lower end of valve rod (5), connect as one by valve clack cover (4) and valve rod (5), upper seal support (6) is passed in the upper end of described valve rod (5), filler (11), filler pressing sleeve (12) and hold-down grid (13) are threaded connection together with Stem Mut (17), described valve gap (8) is fixedly connected on the top of valve body (1), described Stem Mut (17) is located in the groove at valve gap (8) top, in it outer end respectively with valve rod (5), handwheel (19) links together.
2. stop valve according to claim 1 is characterized in that: the seal arrangement employing bipyramid ring (7) between described valve gap (8) and the valve body (1).
3. stop valve according to claim 1, it is characterized in that: the outer surface of described flap (3) is rubber-coated.
4. stop valve according to claim 1 is characterized in that: the sealing surface employing spheric structure of described valve seat (2).
5. stop valve according to claim 1, it is characterized in that: the lower end of described valve gap (8) is provided with upper seal support (6).
CN 201220579787 2012-11-06 2012-11-06 Stop valve Expired - Fee Related CN202851994U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220579787 CN202851994U (en) 2012-11-06 2012-11-06 Stop valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220579787 CN202851994U (en) 2012-11-06 2012-11-06 Stop valve

Publications (1)

Publication Number Publication Date
CN202851994U true CN202851994U (en) 2013-04-03

Family

ID=47983199

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220579787 Expired - Fee Related CN202851994U (en) 2012-11-06 2012-11-06 Stop valve

Country Status (1)

Country Link
CN (1) CN202851994U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105443783A (en) * 2016-01-31 2016-03-30 山东莱德机械有限公司 Self-sealing stop valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105443783A (en) * 2016-01-31 2016-03-30 山东莱德机械有限公司 Self-sealing stop valve
CN105443783B (en) * 2016-01-31 2018-06-29 山东莱德管阀有限公司 Self-sealing stop valve

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130403

Termination date: 20141106

EXPY Termination of patent right or utility model