CN204387346U - There is the stop valve of high sealing performance - Google Patents

There is the stop valve of high sealing performance Download PDF

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Publication number
CN204387346U
CN204387346U CN201420790480.1U CN201420790480U CN204387346U CN 204387346 U CN204387346 U CN 204387346U CN 201420790480 U CN201420790480 U CN 201420790480U CN 204387346 U CN204387346 U CN 204387346U
Authority
CN
China
Prior art keywords
valve
flap
sphere
cover
valve body
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
CN201420790480.1U
Other languages
Chinese (zh)
Inventor
林丐美
翁士俭
周永清
叶丐新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubei Lituo Valve Co Ltd
Original Assignee
Hubei Lituo Valve Co Ltd
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 Hubei Lituo Valve Co Ltd filed Critical Hubei Lituo Valve Co Ltd
Priority to CN201420790480.1U priority Critical patent/CN204387346U/en
Application granted granted Critical
Publication of CN204387346U publication Critical patent/CN204387346U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of stop valve with high sealing performance, described valve bonnet seal lid is put on valve body, valve handle activity is arranged on valve gap, the lower end of this valve rod is positioned at valve body, valve seat is provided with in described valve body, it also includes flap cover and valve clack cover, described flap entirety is in sphere-like, flap cover entirety cylindrically, and the upper end bore of this flap cover is greater than sphere-like flap diameter 2 to 5 millimeters, lower end bore is less than sphere-like flap diameter 2 to 5 millimeters, the flap of described sphere-like is placed in flap cover, the lower ending opening that the flap of this sphere-like is overlapped by flap seals mutually with the valve seat in valve body and contacts, the utility model advantage is: structural design is very reasonable, not only effectively extend working life, but also effectively stopped the potential safety hazard that produces due to leakage.

Description

There is the stop valve of high sealing performance
Technical field
The utility model relates to the technical field of valve, more particularly relates to the technical field of stop valve.
Background technique
Valve is the device being used for controlling the direction of fluid, pressure and flow in fluid system, and it can make the media flow in pipe arrangement and equipment or stops and controlling the device of its flow.Valve mainly includes gate valve, stop valve, safety check, membrane valve, ball valve, stopcock, dish valve, plunger valve and ball valve etc., the sealability of valve refers to that each sealed department steric hindrance of valve stops the ability of dielectric leakage, and it is the most important technical performance index of valve.There are three places at the sealing position of valve: one is the contacting point between open-shut device and valve seat two sealing surface; Two is cooperation places of filler and valve rod and stuffing box; Three is joints of valve body and valve gap.Wherein the leakage at the first place is called interior leakage, namely usually saidly fits badly, and it blocks the ability of medium by affecting valve.For block valve class, interior leakage is unallowed.The leakage at rear two places is called and leaks outside, and namely medium is from valve internal leakage to valve.Leak outside and can cause loss of material, befouling environment, also can cause the accident time serious.For inflammable and explosive, poisonous or have the medium of radiation, leak outside unallowable especially, thus valve must have reliable sealability.Stop valve is the type in valve, and it is also known as pipe valve valve, belongs to forced seal formula valve, so when valve closing, must apply pressure, do not leak with forced seal face to flap.When medium is by when entering valve below flap, the resistance overcome required for steering force, be the frictional force of valve rod and filler and the thrust produced by the pressure of medium, the power of the force rate valve opening door of closing valve is large, so the diameter of valve rod wants large, otherwise the fault of valve rod bending can be there is.The closed principle of stop valve relies on valve rod pressure, and valve clack sealing surface and sealing surface of seat are fitted tightly, and stops medium circulation.The flap of the open-shut device of stop valve normally stopper, its sealing surface is plane or the conical surface, and flap is along the center line moving linearly of valve seat.In long-term repeatedly opening and closing process in use, its sealing surface there will be natural wear phenomenon on the one hand, causes poorly sealed generation to be leaked; On the other hand also can to sealing surface cause damage in various degree containing assorted impurity when opening and closing in medium, poorly sealed generation is caused to be leaked, because sealing surface immobilizes, once there is damage in sealing face, not only substantially reduce the working life of this product, and also can produce potential safety hazard time serious.
Model utility content
The purpose of this utility model is exactly provide a kind of structural design very reasonable to solve above-mentioned deficiency, and sealing surface from Row sum-equal matrix, not only can effectively can increase the service life, but also effectively can stop the stop valve with high sealing performance of potential safety hazard.
The technical solution that the utility model adopts to solve the problems of the technologies described above is as follows:
There is the stop valve of high sealing performance, it mainly includes valve body, valve gap, valve rod and flap, described valve bonnet seal lid is put on valve body, valve handle activity is arranged on valve gap, the lower end of this valve rod is positioned at valve body, valve seat is provided with in described valve body, it also includes flap cover and valve clack cover, described flap entirety is in sphere-like, flap cover entirety cylindrically, and the upper end bore of this flap cover is greater than sphere-like flap diameter 2 to 5 millimeters, lower end bore is less than sphere-like flap diameter 2 to 5 millimeters, the flap of described sphere-like is placed in flap cover, the lower ending opening that the flap of this sphere-like is overlapped by flap seals mutually with the valve seat in valve body and contacts, described valve clack cover lid puts the upper end at flap cover, this valve clack cover offers through hole, the lower end of described valve rod is provided with baffle plate, valve rod is plugged in valve clack cover by this through hole, and the baffle plate of valve rod lower end contacts with the flap of sphere-like.
Described valve seat is provided with the conical surface, this conical surface is fixedly equipped with cemented carbide, described sphere-like flap seals mutually with the conical surface of this valve seat and contacts.
Spacing 2 to 5 centimetres inside the baffle plate of described valve rod lower end and valve clack cover.
The beneficial effect that the utility model adopts above-mentioned technical solution to reach is: structural design is very reasonable, the flap of sphere-like and valve seat not use only face and seal, and the flap of sphere-like freely can rotate in flap cover, do not stop the sealing surface freely exchanging flap and valve seat, theoretically, there is countless corresponding sealing surface in flap and valve seat, efficiently solve wearing and tearing and the damage of sealing surface nature and non-natural, not only effectively extend working life, but also effectively stop the potential safety hazard that produces due to leakage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, there is the stop valve of high sealing performance, it mainly includes valve body 1, valve gap 2, valve rod 3, flap 4, flap cover 5 and valve clack cover 6, described valve gap 2 sealing cover is put on valve body 1, valve rod 3 is movably arranged on valve gap 2, the lower end of this valve rod 3 is positioned at valve body 1, valve seat 7 is provided with in described valve body 1, this valve seat 7 is provided with the conical surface, this conical surface is fixedly equipped with cemented carbide 8, described flap 4 entirety is in sphere-like, flap overlaps 5 entirety cylindrically, the flap 4 of described sphere-like is placed in flap cover 5, the upper end bore of this flap cover 5 is greater than sphere-like flap 4 diameter 2 to 5 millimeters, lower end bore is less than sphere-like flap 4 diameter 2 to 5 millimeters, like this, the flap 4 being not only convenient to sphere-like enters from the upper end of flap cover 5, and the flap 4 of sphere-like limit can be placed in flap cover 5 again, the flap 4 of this sphere-like seals sphere-contact by the flap cover lower ending opening of 5 mutually with valve seat 7 conical surface cemented carbide 8 place in valve body 1, described valve clack cover 6 lid is put in the upper end of flap cover 5, this valve clack cover 6 offers through hole, the lower end of described valve rod 3 is provided with baffle plate 9, valve rod 3 is plugged in valve clack cover 6 by this through hole, and the baffle plate 9 of valve rod 3 lower end contacts with the flap 4 of sphere-like, freedom in 5 can be overlapped and flexible rotating at flap in order to sphere-like flap 4 can be allowed, inside the baffle plate 9 of this valve rod 3 lower end and valve clack cover 6, spacing 2 to 5 centimetres is advisable, when valve rod 3 upwards promotes slightly, flap 4 just can overlap 5 freely and flexible rotating at flap.

Claims (3)

1. there is the stop valve of high sealing performance, it mainly includes valve body, valve gap, valve rod and flap, described valve bonnet seal lid is put on valve body, valve handle activity is arranged on valve gap, the lower end of this valve rod is positioned at valve body, valve seat is provided with in described valve body, it is characterized in that: it also includes flap cover and valve clack cover, described flap entirety is in sphere-like, flap cover entirety cylindrically, and the upper end bore of this flap cover is greater than sphere-like flap diameter 2 to 5 millimeters, lower end bore is less than sphere-like flap diameter 2 to 5 millimeters, the flap of described sphere-like is placed in flap cover, the lower ending opening that the flap of this sphere-like is overlapped by flap seals mutually with the valve seat in valve body and contacts, described valve clack cover lid puts the upper end at flap cover, this valve clack cover offers through hole, the lower end of described valve rod is provided with baffle plate, valve rod is plugged in valve clack cover by this through hole, and the baffle plate of valve rod lower end contacts with the flap of sphere-like.
2. the stop valve with high sealing performance according to claim 1, is characterized in that: described valve seat is provided with the conical surface, this conical surface is fixedly equipped with cemented carbide, and described sphere-like flap seals mutually with the conical surface of this valve seat and contacts.
3. the stop valve with high sealing performance according to claim 1 and 2, is characterized in that: spacing 2 to 5 centimetres inside the baffle plate of described valve rod lower end and valve clack cover.
CN201420790480.1U 2014-12-15 2014-12-15 There is the stop valve of high sealing performance Expired - Fee Related CN204387346U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420790480.1U CN204387346U (en) 2014-12-15 2014-12-15 There is the stop valve of high sealing performance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420790480.1U CN204387346U (en) 2014-12-15 2014-12-15 There is the stop valve of high sealing performance

Publications (1)

Publication Number Publication Date
CN204387346U true CN204387346U (en) 2015-06-10

Family

ID=53360068

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420790480.1U Expired - Fee Related CN204387346U (en) 2014-12-15 2014-12-15 There is the stop valve of high sealing performance

Country Status (1)

Country Link
CN (1) CN204387346U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104595502A (en) * 2014-12-15 2015-05-06 湖北力拓阀业有限公司 Stop valve with high sealing performance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104595502A (en) * 2014-12-15 2015-05-06 湖北力拓阀业有限公司 Stop valve with high sealing performance

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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: 20150610

Termination date: 20161215

CF01 Termination of patent right due to non-payment of annual fee