CN202790579U - Tri-eccentricity-pressure automatic compensation soft seal butterfly valve - Google Patents

Tri-eccentricity-pressure automatic compensation soft seal butterfly valve Download PDF

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Publication number
CN202790579U
CN202790579U CN 201220417768 CN201220417768U CN202790579U CN 202790579 U CN202790579 U CN 202790579U CN 201220417768 CN201220417768 CN 201220417768 CN 201220417768 U CN201220417768 U CN 201220417768U CN 202790579 U CN202790579 U CN 202790579U
Authority
CN
China
Prior art keywords
valve body
valve
fixed
butterfly
butterfly plate
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 201220417768
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Chinese (zh)
Inventor
张胜
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.)
WENZHOU JIASHENG VALVE CO Ltd
Original Assignee
WENZHOU JIASHENG 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 WENZHOU JIASHENG VALVE CO Ltd filed Critical WENZHOU JIASHENG VALVE CO Ltd
Priority to CN 201220417768 priority Critical patent/CN202790579U/en
Application granted granted Critical
Publication of CN202790579U publication Critical patent/CN202790579U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a tri-eccentricity-pressure automatic compensation soft seal butterfly valve, which comprises a valve body, wherein the valve body is connected with a worm-gear case through a valve rod; a hand wheel is connected to the worm-gear case; an upper shaft sleeve and a lower shaft sleeve are arranged between the valve rod and the valve body; the top of the valve body is provided with a packing material, and is sealed through a gland; the gland is fixed on a bracket through a nut; the bracket is fixed through a nut; a bottom cover is arranged at the bottom of the valve body, and is fixed at the bottom of the valve body through a socket head screw; a butterfly plate is fixed in the valve body through the middle part of the valve rod, and is fixed through a pin; a pressure plate ring is arranged between the butterfly plate and the valve body; the butterfly plate has a tri-eccentric structure; and a combined sealing ring is arranged between the butterfly plate and the pressure plate ring, is provided with a diversion hole and a diversion groove, and can be arranged on the butterfly plate or the valve body. When the butterfly valve is opened, the sealing ring is immediately separated from a valve seat, and friction between the sealing ring and the valve seat is eliminated, so that the service life is prolonged greatly; and meanwhile, the pressure acting in a thin sealing gasket falls accordingly, the elastic deformation of the sealing ring disappears accordingly, and the opening torque of the valve is lowered.

Description

Three eccentricity pressure auto-compensation soft sealing butterfly valves
Technical field
The utility model relates to industrial valve, particularly three eccentricity pressure auto-compensation soft sealing butterfly valves.
Background technique
Hard seal butterfly valve adopts three eccentric structures, and multi-layer sealing ring is simple in structure, good seal performance, but oppositely sealability is undesirable, and as reaching two way sealed, its manufacture cost is very high.Requirement to the medium turbidity test is higher, impurity in the medium is fatefulue, unrepairable to the damage of seal ring, the sealability of soft sealing butterfly valve is fine, require also not high to the medium turbidity test, because the ductility of rubber, under higher pressure-acting, seal ring can be extruded sealing seat, and occurs leaking.
The model utility content
In order to overcome above shortcomings part in the prior art, the purpose of this utility model is to provide a kind of three eccentricity pressure auto-compensation soft sealing butterfly valves, it is simple in structure, be applicable to high and medium pressure piping, less demanding to the medium turbidity test, be the novel butterfly valve between hard seal butterfly valve and soft sealing butterfly valve.
In order to reach above-mentioned purpose, the utility model adopts following concrete technological scheme: three eccentricity pressure auto-compensation soft sealing butterfly valves, comprise valve body, described valve body is connected with Worm gear case by valve rod, be connected with handwheel on the Worm gear case, be provided with between valve rod and the valve body, Lower shaft sleeve, valve body is equipped with stuffing in the top, again by gland seal, gland is fixed on the support by nut, described support is fixed on the valve body by nut, the valve body bottom is equipped with bottom, butterfly plate is fixed in the valve body by the middle part of valve rod, be provided with pressure plate loop between butterfly plate and the valve body, described butterfly plate is three eccentric structures, be provided with combined seal ring between described butterfly plate and the pressure plate loop and have pod apertures and guiding gutter, make its more effective effect of pressure-acting on slim gasket seal that reach, two faces of combined seal ring are provided with slim gasket seal, given the two way sealed performance of valve, owing to be to adopt elastomeric material as seal ring, turbidity test to medium require also greatly to reduce, and described combined seal ring can be installed on the butterfly plate or on the valve body.
Be provided with divided ring and pad between described valve body and the bottom, described pad places between divided ring and the bottom.
Described bottom is fixed on the valve body bottom by socket head screw.
Described butterfly plate is fixed by a pin in the valve body.
Compared with prior art, the utlity model has following outstanding advantages and effect: this butterfly valve seal circle is to adopt elastomeric material (rubber, plastics), the two sides of seal ring respectively is furnished with a slim gasket seal, under the effect of the pretightening force of pressure plate loop screw, has formed low pressure seal.When pressure exceeds pretightening force, the pressure that acts on the slim gasket seal of seal ring makes elastomeric material produce resiliently deformable, it is larger to have formed the highly denser seal distortion of pressure, the seal pressure that produces is larger, namely sealing is better, and can carry out the self-compensating reparation to the long-term wearing and tearing of using of seal ring.In order better to reach the effect of slim gasket seal, on butterfly plate and pressure plate loop, respectively have guiding gutter and pod apertures, make its more effective effect of pressure-acting on slim gasket seal that reach, because there is slim gasket seal on the two sides, given the two way sealed performance of valve.Owing to be to adopt elastomeric material as seal ring, to the also greatly reduction of turbidity test requirement of medium.Adopt three eccentric structures, seal ring is thrown off with valve seat immediately during unlatching, seal ring and valve seat be not friction almost, greatly improved working life, the pressure that acts on simultaneously slim gasket seal also decreases, the resiliently deformable that acts on the elastomeric material seal ring also disappears thereupon, and valve opening moment also decreases.It is the novel butterfly valve that reduces energy consumption.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A enlarged view of Fig. 1;
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment
In order further to explain the technical solution of the utility model, the utility model is elaborated below by specific embodiment.
Such as Fig. 1, shown in Figure 2, three eccentricity pressure auto-compensation soft sealing butterfly valves, comprise valve body 6, described valve body 6 is connected with Worm gear case 23 by valve rod 10, be connected with handwheel 22 on the Worm gear case 23, be provided with between valve rod 10 and the valve body 6, Lower shaft sleeve 11,1, valve body is equipped with stuffing 13 in 6 tops, again by gland 15 sealings, gland 15 is fixed on the support 14 by nut, described support 14 is fixed by nut, valve body 6 bottoms are equipped with bottom 5, be fixed on valve body 1 bottom by socket head screw, butterfly plate 9 is fixed in the valve body 6 by the middle part of valve rod 10, and fix by pin, be provided with pressure plate loop 25 between butterfly plate 9 and the valve body, described butterfly plate 9 is three eccentric structures, be provided with combined seal ring 24 between described butterfly plate 9 and the pressure plate loop 25 and have pod apertures 26 and guiding gutter 27, two faces of combined seal ring 24 are provided with slim gasket seal 28, described combined seal ring 24 can be installed on the butterfly plate 9 or on the valve body 6, be provided with divided ring 2 and pad 3 between described valve body 6 and the bottom 5, described pad 3 places between divided ring 2 and the bottom 5, this butterfly valve seal circle is to adopt elastomeric material (rubber, plastics), the two sides of seal ring respectively is furnished with a slim gasket seal, under the effect of the pretightening force of pressure plate loop screw, formed low pressure seal.When pressure exceeds pretightening force, the pressure that acts on the slim gasket seal of seal ring makes elastomeric material produce resiliently deformable, it is larger to have formed the highly denser seal distortion of pressure, the seal pressure that produces is larger, namely sealing is better, and can carry out the self-compensating reparation to the long-term wearing and tearing of using of seal ring.In order better to reach the effect of slim gasket seal, on butterfly plate and pressure plate loop, respectively have guiding gutter and pod apertures, make its more effective effect of pressure-acting on slim gasket seal that reach, because there is slim gasket seal on the two sides, given the two way sealed performance of valve.Owing to be to adopt elastomeric material as seal ring, to the also greatly reduction of turbidity test requirement of medium.Adopt three eccentric structures, seal ring is thrown off with valve seat immediately during unlatching, seal ring and valve seat be not friction almost, greatly improved working life, the pressure that acts on simultaneously slim gasket seal also decreases, the resiliently deformable that acts on the elastomeric material seal ring also disappears thereupon, and valve opening moment also decreases.It is the novel butterfly valve that reduces energy consumption.
It should be noted that at last: above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims (4)

1. three eccentricity pressure auto-compensation soft sealing butterfly valves, comprise valve body, it is characterized in that: described valve body is connected with Worm gear case by valve rod, be connected with handwheel on the Worm gear case, be provided with between valve rod and the valve body, Lower shaft sleeve, valve body is equipped with stuffing in the top, again by gland seal, gland is fixed on the support by nut, described support is fixed on the valve body by nut, the valve body bottom is equipped with bottom, and butterfly plate is fixed in the valve body by the middle part of valve rod, is provided with pressure plate loop between butterfly plate and the valve body, described butterfly plate is three eccentric structures, be provided with combined seal ring between described butterfly plate and the pressure plate loop and have pod apertures and guiding gutter, two faces of combined seal ring are provided with slim gasket seal, and described combined seal ring can be installed on the butterfly plate or on the valve body.
2. described three eccentricity pressure auto-compensation soft sealing butterfly valves according to claim 1, it is characterized in that: be provided with divided ring and pad between described valve body and the bottom, described pad places between divided ring and the bottom.
3. described three eccentricity pressure auto-compensation soft sealing butterfly valves according to claim 1, it is characterized in that: described bottom is fixed on the valve body bottom by socket head screw.
4. described three eccentricity pressure auto-compensation soft sealing butterfly valves according to claim 1, it is characterized in that: described butterfly plate is fixed by a pin in the valve body.
CN 201220417768 2012-08-22 2012-08-22 Tri-eccentricity-pressure automatic compensation soft seal butterfly valve Expired - Fee Related CN202790579U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220417768 CN202790579U (en) 2012-08-22 2012-08-22 Tri-eccentricity-pressure automatic compensation soft seal butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220417768 CN202790579U (en) 2012-08-22 2012-08-22 Tri-eccentricity-pressure automatic compensation soft seal butterfly valve

Publications (1)

Publication Number Publication Date
CN202790579U true CN202790579U (en) 2013-03-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220417768 Expired - Fee Related CN202790579U (en) 2012-08-22 2012-08-22 Tri-eccentricity-pressure automatic compensation soft seal butterfly valve

Country Status (1)

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CN (1) CN202790579U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105587869A (en) * 2016-03-01 2016-05-18 天津自阀流体控制有限公司 Double-scraper diaphragm butterfly valve
CN105673871A (en) * 2014-11-18 2016-06-15 天津澳特斯阀门制造有限公司 Multifunctional butterfly valve
CN111188916A (en) * 2020-03-17 2020-05-22 洪明祈 High leakproofness butterfly valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105673871A (en) * 2014-11-18 2016-06-15 天津澳特斯阀门制造有限公司 Multifunctional butterfly valve
CN105587869A (en) * 2016-03-01 2016-05-18 天津自阀流体控制有限公司 Double-scraper diaphragm butterfly valve
CN111188916A (en) * 2020-03-17 2020-05-22 洪明祈 High leakproofness butterfly valve

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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: 20130313

Termination date: 20150822

EXPY Termination of patent right or utility model