CN114382900A - Three-eccentric sealed butterfly valve - Google Patents
Three-eccentric sealed butterfly valve Download PDFInfo
- Publication number
- CN114382900A CN114382900A CN202111199378.5A CN202111199378A CN114382900A CN 114382900 A CN114382900 A CN 114382900A CN 202111199378 A CN202111199378 A CN 202111199378A CN 114382900 A CN114382900 A CN 114382900A
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- China
- Prior art keywords
- valve
- wall
- valve rod
- valve body
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/224—Details of bearings for the axis of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a three-eccentric sealed butterfly valve, which comprises a valve body, a valve plate and a valve rod, wherein the valve rod is rotationally connected with the valve body, the valve plate is circumferentially and fixedly connected with the valve rod, the three-eccentric sealed butterfly valve also comprises an inflatable sealing part, the inflatable sealing part comprises a fixing part and an inflating part, the fixing part surrounds the end part of the valve plate, the inflating part is positioned at one end of the fixing part, which is close to the inner wall of the valve body, and is spaced from the inner wall of the valve body, the fixing part is provided with a jack, the side wall of the valve rod is provided with an insertion pipe matched with the jack, the fixing part is internally provided with an air passage communicated with the jack and the inner cavity of the inflating part, the valve rod is provided with a chute above the valve body, the chute is internally provided with a piston matched with a sliding way, one side of the chute is provided with an opening, the upper end of the piston is provided with a connecting arm, the connecting arm penetrates out of the opening, the spring is abutted against the lower part of the connecting arm, the bottom of the chute is provided with a one-way valve, the air cavity communicated with the one-way valve and the insertion pipe is arranged in the valve rod, the side wall of the valve rod is provided with an exhaust part for exhausting the air cavity, and the exhaust part is tightly attached to the inner wall of the valve body after the inflation part is inflated and expanded.
Description
Technical Field
The invention relates to the field of butterfly valves, in particular to a three-eccentric sealed butterfly valve.
Background
The butterfly valve is a simple structure's governing valve, can be used to the on-off control of low pressure pipeline medium, mainly play the effect of cutting off and throttle on the pipeline, butterfly valve on the existing market is when the use in the operating mode, lead to the disk seat of butterfly valve, the valve plate can frequently produce the friction playing to close the in-process, it is comparatively serious to lead to wearing and tearing after long-time use, it is generally shorter to cause life, three eccentric seal formula butterfly valves are through eccentric settings, although can improve and play and close certain frictional force of in-process, but in order to guarantee the demand of leakproofness, always still can not avoid the disk seat of butterfly valve, the frictional wear that the valve plate leads to because of the contact.
Disclosure of Invention
The invention aims to provide a three-eccentric sealing type butterfly valve which is provided with an inflatable inflating component, wherein when a valve plate is in a closed state, inflation is carried out to seal a valve body, and after an inflating part is exhausted, the valve plate is prevented from generating friction when being opened or closed, so that the service life is prolonged, and the use cost is reduced.
In order to solve the technical problems, the invention adopts the following technical scheme: a three-eccentric sealed butterfly valve comprises a valve body, a valve plate and a valve rod, wherein the valve rod is rotatably connected with the valve body, the valve plate is fixedly connected with the valve rod in the circumferential direction, the three-eccentric sealed butterfly valve further comprises an inflatable sealing component, the inflatable sealing component comprises a fixing part and an inflating part, the fixing part surrounds the end part of the valve plate, the inflating part is positioned at one end, close to the inner wall of the valve body, of the fixing part and is arranged at an interval with the inner wall of the valve body, one side, facing the valve rod, of the fixing part is provided with a jack, the side wall of the valve rod is provided with an insertion pipe matched with the jack, the fixing part is internally provided with an air passage communicated with the jack and the inner cavity of the inflating part, the valve rod is provided with a chute above the valve body, the inner wall of the chute is provided with a piston capable of vertically sliding, one side of the chute is provided with an opening, the upper end of the piston is provided with a connecting arm, the connecting arm penetrates out of the opening, and the opening is provided with a spring, the spring is abutted to the lower portion of the connecting arm, a one-way valve is arranged at the bottom of the sliding groove, an air cavity communicated with the one-way valve and the insertion pipe is further arranged in the valve rod, an exhaust portion used for exhausting the air cavity is further arranged on the side wall of the valve rod, and when the inflation portion inflates, the inflation portion expands and then is tightly attached to the inner wall of the valve body.
Technical scheme more than adopting, when the valve plate is in the closed condition, thereby promote the linking arm downwards and drive the piston and slide downwards in the spout, compression spring simultaneously promotes the linking arm and upwards resets, through reciprocating motion production air current through the check valve get into the air cavity in, the air current of air cavity passes through the intubate and gets into in the connecting portion, in the portion is aerifyd in the air flue entering, aerify the inflation portion and closely laminate with the valve body inner wall after the inflation, thereby sealed to the valve body, when the valve body is opened to needs, open the exhaust portion and will aerify the gas outgoing in the portion. The gas charging part is arranged at an interval with the valve body after being contracted, and the valve rod is rotated to avoid friction between the gas charging part and the inner wall of the valve body, so that the service life is prolonged.
As a further optimization of the invention, the end part of the valve plate is provided with an annular opening, the inner side of the fixing part is abutted against the side wall of the annular opening, one side of the valve plate, which is far away from the valve rod, is provided with a pressing plate, and the pressing plate is abutted against the outer side of the fixing part.
By adopting the technical scheme, during installation, the inner side of the fixing part is firstly abutted against the side wall of the annular opening, and then the pressing plate is abutted against the outer side of the fixing part, so that the fixing part is clamped and fixed, and the installation and the operation are convenient.
As a further optimization of the invention, the exhaust part comprises an exhaust pipe communicated with the air cavity and a sealing cover used for opening or closing the exhaust pipe, wherein the inner wall of the exhaust pipe is provided with internal threads, and the sealing cover is in threaded fit with the inner wall of the exhaust pipe.
As a further optimization of the invention, a plurality of threaded holes are circumferentially arranged on one side of the valve plate, which is far away from the valve rod, mounting holes which correspond to the threaded holes one by one are arranged on the pressure plate, and the pressure plate is mounted on the valve plate through bolts.
In a further preferred embodiment of the present invention, the inflatable portion is made of rubber.
The invention has the beneficial effects that: the linking arm produces the air current through reciprocating motion and passes through in the check valve gets into the air cavity, aerifys the portion and aerifys the inflation back and closely laminate with the valve body inner wall to sealed to the valve body, when the valve body was opened to needs, open the gas outgoing in the portion will aerify to exhaust portion, aerify the portion shrink back and valve body interval setting, rotate the valve rod this moment and avoid aerifing and produce the friction between portion and the valve body inner wall, thereby increased life.
Drawings
FIG. 1 is a schematic structural diagram of the present invention:
FIG. 2 is a schematic cross-sectional view of the present invention;
fig. 3 is an enlarged schematic view of fig. 2.
The reference numbers in the figures mean: 1. a valve body; 2. a valve stem; 21. inserting a tube; 3. a valve plate; 41. a fixed part; 411. an airway; 42. an inflation section; 5. a chute; 51. an opening; 52. a spring; 6. a piston; 61. a connecting arm; 7. an air cavity; 71. an exhaust pipe; 711. a sealing cover; 8. pressing a plate; 9. and (4) bolts.
Detailed Description
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Referring to fig. 1-3, the presently disclosed embodiment of the present invention is further configured to: a three-eccentric sealed butterfly valve comprises a valve body 1, a valve plate 3 and a valve rod 2, wherein the valve rod 2 is rotatably connected with the valve body 1, and the valve plate 3 is coaxially connected with the valve rod 2;
the valve plate is characterized by further comprising an inflatable sealing component, the inflatable sealing component comprises a fixing portion 41 and an inflatable portion 42, the inflatable portion 42 is mainly made of rubber, the fixing portion 41 surrounds the end portion of the valve plate 3, an annular opening is formed in the end portion of the valve plate 3, one side of the fixing portion 41 abuts against the side wall of the annular opening, a plurality of threaded holes are formed in one side, away from the valve rod 2, of the valve plate 3 along the circumferential direction, mounting holes corresponding to the threaded holes one to one are formed in the pressing plate 8, the pressing plate 8 is mounted on the valve plate 3 through bolts 9, the pressing plate 8 abuts against the side wall, away from the annular opening, of the fixing portion 41, during mounting, the inner side of the fixing portion 41 abuts against the side wall of the opening 51, meanwhile, the jack is inserted and matched with the side wall of the valve rod 2, the pressing plate 8 is propped against the outer side of the fixing part 41, therefore, the fixing part 41 is clamped and fixed, the installation and the operation are convenient, and the inflating part 42 is positioned at one end of the fixing part 41 close to the inner wall of the valve body 1 and is arranged at intervals with the inner wall of the valve body 1;
one side of the fixing part 41 facing the valve rod 2 is provided with an insertion hole, the side wall of the valve rod 2 is provided with an insertion tube 21 matched with the insertion hole, and the fixing part 41 is internally provided with an air passage 411 communicated with the insertion hole and the inner cavity of the inflation part 42;
the valve rod 2 is provided with a sliding groove 5 above the valve body 1, the inner wall of the sliding groove 5 is provided with a piston 6 capable of vertically sliding, one side of the sliding groove 5 is provided with an opening 51, the upper end of the piston 6 is provided with a connecting arm 61, the connecting arm 61 penetrates out of the opening 51, the opening 51 is provided with a spring 52, the spring 52 is abutted against the lower part of the connecting arm 61, the bottom of the sliding groove 5 is provided with a one-way valve, an air cavity 7 communicated with the one-way valve and the insertion tube 21 is further arranged in the valve rod 2, and the inflating part 42 is tightly attached to the inner wall of the valve body 1 after being expanded;
the side wall of the valve rod 2 is also provided with an exhaust part for exhausting the air cavity 7, the exhaust part comprises an exhaust pipe 71 communicated with the air cavity 7 and a sealing cover 711 for opening or closing the exhaust pipe 71, the inner wall of the exhaust pipe 71 is provided with internal threads, and the sealing cover 711 is in threaded fit with the inner wall of the exhaust pipe 71.
The principle of the invention is as follows: when the valve plate 3 is in the closed state, the connecting arm 61 is pushed downwards to drive the piston 6 to slide downwards in the chute 5, at the same time, the spring 52 is compressed, the connecting arm 61 is pushed to reset upwards, air flow is generated through reciprocating motion and enters the air cavity 7 through the one-way valve, the air flow in the air cavity 7 enters the connecting part through the cannula 21, after entering the air charging part 42 through the air passage 411, the air charging part 42 is tightly attached to the inner wall of the valve body 1 after being inflated, therefore, the sealing effect on the valve body 1 is achieved, when the channel of the valve body 1 needs to be opened, the exhaust part is opened, gas in the inflation part 42 is exhausted from the exhaust pipe 71, the inflation part 42 is contracted and then is arranged at an interval with the valve body 1, the valve rod 2 is rotated to open the channel of the valve body 1, and friction between the inflation part 42 and the inner wall of the valve body 1 can be avoided, so that the service life of the butterfly valve is prolonged, and the use cost is reduced.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and those modifications and variations assumed in the above are also considered to be within the protective scope of the present invention.
Claims (5)
1. The utility model provides a three eccentric seal formula butterfly valves, includes valve body (1), valve plate (3), valve rod (2) rotates with valve body (1) to be connected, valve plate (3) and valve rod (2) circumference fixed connection, its characterized in that still includes aerifys sealed parts, aerify sealed parts and include fixed part (41) and aerify portion (42), fixed part (41) are around the tip of locating valve plate (3), aerify portion (42) and be located the one end of fixed part (41) near valve body (1) inner wall and be provided with the interval with valve body (1) inner wall, one side of fixed part (41) orientation valve rod (2) is equipped with the jack, the lateral wall of valve rod (2) is equipped with intubate (21) with jack looks adaptation, be equipped with air flue (411) that communicate jack and aerify portion (42) inner chamber in fixed part (41), spout (5) have been seted up to valve rod (2) above valve body (1), be equipped with piston (6) of slip adaptation in spout (5), one side of spout (5) is equipped with opening (51), the upper end of piston (6) is equipped with linking arm (61), valve rod (2) are worn out from opening (51) in linking arm (61), opening (51) department is equipped with spring (52), the below in linking arm (61) is supported in spring (52) upper end, spout (5) bottom still is equipped with the check valve, still be equipped with air cavity (7) that communicate check valve and intubate (21) in valve rod (2), valve rod (2) lateral wall still is equipped with and is used for the carminative exhaust portion of air cavity (7), aerify portion (42) and closely laminate through inflation and valve body (1) inner wall.
2. A three eccentric sealed butterfly valve according to claim 1, characterized in that the valve plate (3) has an annular opening at its end, the side of the fixing part (41) is against the side wall of the annular opening, the side of the valve plate (3) far from the valve stem (2) is provided with a pressure plate (8), and the pressure plate (8) is against the side wall of the fixing part (41) far from the annular opening.
3. A triple offset seal type butterfly valve according to claim 1, said exhaust portion comprising an exhaust pipe (71) communicating with the air chamber (7) and a seal cover (711) for opening or closing the exhaust pipe (71), said exhaust pipe (71) being internally threaded on its inner wall, said seal cover (711) being screw-fitted to the inner wall of the exhaust pipe (71).
4. A three-eccentric sealed butterfly valve according to claim 2, characterized in that the valve plate (3) is provided with a plurality of threaded holes along the circumferential direction on the side away from the valve rod (2), the pressure plate (8) is provided with mounting holes corresponding to the threaded holes one by one, and the pressure plate (8) is mounted on the valve plate (3) through bolts (9).
5. A triple eccentric seal butterfly valve according to claim 1, in which said inflating portion (42) is of rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111199378.5A CN114382900A (en) | 2021-10-14 | 2021-10-14 | Three-eccentric sealed butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111199378.5A CN114382900A (en) | 2021-10-14 | 2021-10-14 | Three-eccentric sealed butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114382900A true CN114382900A (en) | 2022-04-22 |
Family
ID=81194605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111199378.5A Pending CN114382900A (en) | 2021-10-14 | 2021-10-14 | Three-eccentric sealed butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114382900A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001254844A (en) * | 2000-03-14 | 2001-09-21 | Toshiba Corp | Biplane valve |
| CN104964046A (en) * | 2014-09-11 | 2015-10-07 | 奉化市智新仪表科技有限公司 | Large-diameter inflated sealing butterfly valve |
| CN109469830A (en) * | 2018-11-29 | 2019-03-15 | 秦飞 | A kind of natural gas line device for fast detecting |
| CN208900736U (en) * | 2018-07-13 | 2019-05-24 | 章锡明 | From boost charge-air sealed butterfly valve |
| CN110657245A (en) * | 2019-10-10 | 2020-01-07 | 徐辉 | Butterfly valve with enhanced sealing performance |
| CN210344326U (en) * | 2019-05-29 | 2020-04-17 | 万能阀门有限公司 | Dust butterfly valve |
| CN212509575U (en) * | 2020-02-21 | 2021-02-09 | 安当克阀门(上海)有限公司 | Inflatable seal butterfly valve |
-
2021
- 2021-10-14 CN CN202111199378.5A patent/CN114382900A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001254844A (en) * | 2000-03-14 | 2001-09-21 | Toshiba Corp | Biplane valve |
| CN104964046A (en) * | 2014-09-11 | 2015-10-07 | 奉化市智新仪表科技有限公司 | Large-diameter inflated sealing butterfly valve |
| CN208900736U (en) * | 2018-07-13 | 2019-05-24 | 章锡明 | From boost charge-air sealed butterfly valve |
| CN109469830A (en) * | 2018-11-29 | 2019-03-15 | 秦飞 | A kind of natural gas line device for fast detecting |
| CN210344326U (en) * | 2019-05-29 | 2020-04-17 | 万能阀门有限公司 | Dust butterfly valve |
| CN110657245A (en) * | 2019-10-10 | 2020-01-07 | 徐辉 | Butterfly valve with enhanced sealing performance |
| CN212509575U (en) * | 2020-02-21 | 2021-02-09 | 安当克阀门(上海)有限公司 | Inflatable seal butterfly valve |
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