CN110594423A - Structure for positioning valve rod and butterfly plate of butterfly valve - Google Patents
Structure for positioning valve rod and butterfly plate of butterfly valve Download PDFInfo
- Publication number
- CN110594423A CN110594423A CN201910896945.9A CN201910896945A CN110594423A CN 110594423 A CN110594423 A CN 110594423A CN 201910896945 A CN201910896945 A CN 201910896945A CN 110594423 A CN110594423 A CN 110594423A
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- CN
- China
- Prior art keywords
- butterfly plate
- butterfly
- valve rod
- plate
- screwed
- 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.)
- Pending
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Classifications
-
- 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
-
- 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
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
- F16K1/487—Attaching valve members to screw-spindles by a fixing element extending in the axial direction of the spindle, e.g. a screw
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a structure for positioning a valve rod and a butterfly plate of a butterfly valve, which belongs to the technical field of butterfly valves and comprises the butterfly plate, a locknut, an inner hexagonal thread stepped pin and a valve rod, wherein a threaded hole is drilled in the back surface of the butterfly plate, the threaded hole of the butterfly plate penetrates through the butterfly plate, the front side of the butterfly plate is connected with the valve rod, and the outer wall of the joint of the valve rod and the butterfly plate is provided with a positioning hole. Convenient disassembly of the valve rod and the butterfly plate is realized.
Description
Technical Field
The invention relates to the technical field of butterfly valves, in particular to a structure for positioning a valve rod and a butterfly plate of a butterfly valve.
Background
Butterfly valves are of a common type, having a small overall length and height, a fast opening and closing speed, and good fluid control characteristics. The butterfly valve has a wide application range and is widely applied to general industries such as petroleum, coal gas, chemical industry, water treatment and the like.
1. Traditional valve rod and butterfly plate location structure make it very troublesome at assembly and dismantlement in-process because its pin junction's form, lead to work efficiency not high, and the valve rod is not hard up with the linking department of butterfly plate easily.
2. The joint of a traditional valve rod and a butterfly plate is easy to wear, and a fixing structure at the rear end of the joint of the valve rod and the butterfly plate is easy to corrode.
Disclosure of Invention
The invention provides a structure for positioning a butterfly valve rod and a butterfly plate, which is characterized in that a check nut and an inner hexagonal thread stepped pin are arranged, a threaded hole is formed in one side of the butterfly plate, a positioning hole is formed in one side of the valve rod, the inner hexagonal thread stepped pin is screwed in from a threaded hole in the back side of the butterfly plate, so that the front end of the inner hexagonal thread stepped pin is screwed in the positioning hole of the valve rod to be fixed, the check nut is screwed in the threaded hole of the butterfly plate to abut against the inner hexagonal thread stepped pin, the butterfly plate and the valve rod can be easily disassembled only by screwing out the check nut and the inner hexagonal thread stepped pin during disassembly, the problem of looseness at the joint of the valve rod and the butterfly plate is solved, the convenient disassembly of the valve rod and the butterfly plate is realized, the friction pad and the cover plate are arranged, the friction pad made of rubber is embedded at the joint of the butterfly plate and the valve rod, the abrasion problem of the, the fixing blocks on the two sides of the cover plate are screwed with the back side of the butterfly plate by using the antirust screws, and the back side of the cover plate is wrapped by the rubber layer, so that the protection of the inner side threads of the threaded hole of the butterfly plate is realized, and the problem of corrosion of the fixing structure at the rear end of the joint of the valve rod and the butterfly plate is solved.
The specific technical scheme provided by the invention is as follows:
the invention provides a structure for positioning a valve rod and a butterfly plate of a butterfly valve, which comprises the butterfly plate, a locknut, an inner hexagonal thread stepped pin and a valve rod, wherein a threaded hole is drilled and tapped in the back surface of the butterfly plate, the threaded hole of the butterfly plate penetrates through the butterfly plate, the front side of the butterfly plate is connected with the valve rod, a positioning hole is formed in the outer wall of the joint of the valve rod and the butterfly plate, the head end and the tail end of the inner hexagonal thread stepped pin are screwed between the positioning hole of the valve rod and the threaded hole of the butterfly plate, the tail end of the inner hexagonal thread stepped pin is connected with the locknut, the locknut is in threaded connection with the threaded hole in the back end of the butterfly plate, a cover plate is detachably connected to the outer side of the back end of the butterfly plate, the cover plate covers the upper part of the threaded hole of the.
Optionally, the head end of the hexagonal threaded stepped pin is screwed out of the front end of the threaded hole of the butterfly plate, and the front end of the inner hexagonal threaded stepped pin is screwed into the positioning hole of the valve rod.
Optionally, the locknut is screwed into the bolt hole of the butterfly plate after the inner hexagonal thread stepped pin is screwed into the bolt hole of the butterfly plate.
Optionally, a friction pad is embedded at a joint of the butterfly plate and the valve rod.
Optionally, the two sides of the joint of the cover plate and the butterfly plate are in interference connection with fixed blocks, the two ends of each fixed block are screwed into the fixed plates through rustproof screws, the top ends of the rustproof screws are screwed into the butterfly plate, and the rubber layer wraps the outer side of the cover plate.
The invention has the following beneficial effects:
1. according to the invention, the check nut and the inner hexagonal thread stepped pin are arranged, the threaded hole is formed in one side of the butterfly plate, the positioning hole is formed in one side of the valve rod, the inner hexagonal thread stepped pin is screwed in from the threaded hole in the back side of the butterfly plate, so that the front end of the inner hexagonal thread stepped pin is screwed in the positioning hole of the valve rod to be fixed, the check nut is screwed in the threaded hole of the butterfly plate to abut against the inner hexagonal thread stepped pin, the butterfly plate and the valve rod can be easily disassembled only by screwing out the check nut and the inner hexagonal thread stepped pin during disassembly, the problem of looseness of the joint of the valve rod and the butterfly plate is solved, and the valve rod and the butterfly plate.
2. The butterfly plate is provided with the friction pad and the cover plate, the friction pad made of rubber is embedded in the joint of the butterfly plate and the valve rod, the problem of abrasion between the butterfly plate and the valve rod is solved, the cover plate is additionally arranged at the thread position on the back side of the butterfly plate, the fixing blocks on two sides of the cover plate are screwed with the back side of the butterfly plate through the antirust screws, the rubber layer is wrapped on the back side of the cover plate, the protection of threads on the inner side of a threaded hole of the butterfly plate is realized, and the problem of corrosion of the fixing structure at the rear end of the joint of the valve rod.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an overall structure of a positioning structure of a valve rod and a butterfly plate of a butterfly valve according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a cover plate of a structure for positioning a valve rod and a butterfly plate of a butterfly valve according to an embodiment of the invention.
Fig. 3 is a schematic structural diagram of a friction pad of a structure for positioning a valve stem and a butterfly plate of a butterfly valve according to an embodiment of the invention.
In the figure: 1. a butterfly plate; 2. a locknut; 3. a hexagonal socket head stepped pin; 4. a valve stem; 5. a friction pad; 6. a fixed block; 7. a rubber layer; 8. rust-proof screws; 9. and (7) a cover plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The structure for positioning the valve rod and the butterfly plate of the butterfly valve according to the embodiment of the invention will be described in detail with reference to fig. 1 ~ and fig. 3.
Referring to fig. 1-3, the structure for positioning a valve rod and a butterfly plate of a butterfly valve provided by the embodiment of the invention comprises a butterfly plate 1, a locknut 2, an inner hexagonal threaded stepped pin 3 and a valve rod 4, wherein a threaded hole is drilled in the back surface of the butterfly plate 1, and the threaded hole of the butterfly plate 1 penetrates through the butterfly plate 1, the front side of the butterfly plate 1 is connected with the valve rod 4, the outer wall of the joint of the valve rod 4 and the butterfly plate 1 is provided with a positioning hole, the head and tail ends of an inner hexagonal thread stepped pin 3 are screwed between the positioning hole of the valve rod 4 and the threaded hole of the butterfly plate 1, the tail end of the inner hexagonal thread stepped pin 3 is linked with a locknut 2, the locknut 2 is in threaded connection with a threaded hole at the back end of the butterfly plate 1, the outer side of the back end of the butterfly plate 1 is detachably connected with a cover plate 9, and the cover plate 9 covers the threaded hole of the butterfly plate 1, and the hexagon socket head cap thread stepped pin 3 is a hexagon socket head cap thread stepped pin.
The example, set up the screw hole in one side of butterfly plate 1, set up the locating hole in one side of valve rod 4, use hexagon socket head cap screw thread shoulder pin 3 from the dorsal screw hole screw in of butterfly plate 1, make the front end screw in of hexagon socket head cap screw thread shoulder pin 3 the locating hole of valve rod 4 fix, use the threaded hole of 2 screw in butterfly plates 1 of locknut to support hexagon socket head cap screw thread shoulder pin 3, it is not hard up to prevent that valve rod 4 and butterfly plate 1 from linking up the department, only need screw out locknut 2 and hexagon socket head cap screw thread shoulder pin 3 alright easily disassemble butterfly plate 1 and valve rod 4 when dismantling.
Referring to fig. 1, the head end of the hexagonal threaded stepped pin 3 is screwed out of the front end of the threaded hole of the butterfly plate 1, and the front end of the internal hexagonal threaded stepped pin 3 is screwed into the positioning hole of the valve rod 4.
Illustratively, the head end and the tail end of the inner hexagonal thread stepped pin 3 are screwed with the positioning hole of the valve rod 4 and the threaded hole of the butterfly plate 1 for fixing.
Referring to fig. 1, the locknut 2 is screwed into the bolt hole of the butterfly plate 1 after the inner hexagonal threaded stepped pin 3 is screwed into the bolt hole of the butterfly plate 1.
Illustratively, the locknut 2 is screwed into the threaded hole of the butterfly plate 1 to abut against the inner hexagonal threaded stepped pin 3, so as to prevent the inner hexagonal threaded stepped pin 3 from being forced to exit from the threaded hole of the butterfly plate 1.
Referring to fig. 1 and 3, a friction pad 5 is embedded at the joint of the butterfly plate 1 and the valve rod 4.
By way of example, the friction pad 5 prevents the interface between the butterfly plate 1 and the valve stem 4 from being worn by force.
Referring to fig. 1 and 2, two sides of a joint of the cover plate 9 and the butterfly plate 1 are connected with fixing blocks 6 in an interference manner, two ends of each fixing block 6 are screwed into the fixing plates 6 through rustproof screws 8, the top ends of the rustproof screws 8 are screwed into the butterfly plate 1, and the outer side of the cover plate 9 is wrapped with a rubber layer 7.
In the example, the fixing blocks 6 on two sides of the cover plate 9 are screwed with the back side of the butterfly plate 1 by using the rust-proof screws 8, and the back side of the cover plate 9 is wrapped by the rubber layer 7, so that the protection of the threads on the inner side of the threaded hole of the butterfly plate 1 is realized, and the cover plate 9 is prevented from being rusted.
When the anti-rust butterfly plate is used, the front end of a threaded hole of the butterfly plate 1 and a hole position of a positioning hole of the valve rod 4 are aligned, the inner hexagonal thread stepped pin 3 is screwed in from the back side of the threaded hole of the butterfly plate 1 by using a hexagonal wrench, so that the front end of the inner hexagonal thread stepped pin 3 is continuously screwed in the positioning hole of the valve rod 4 to be fixed, the anti-loosening nut 2 is screwed in the threaded hole of the butterfly plate 1 to abut against the inner hexagonal thread stepped pin 3 to prevent the joint of the valve rod 4 and the butterfly plate 1 from loosening, the fixed blocks 6 at the two sides of the cover plate 9 are screwed in the back side of the butterfly plate 1 by using the anti-rust screws 8, the cover plate 9 is protected by the rubber layer 7 wrapped on the back side of the cover plate 9 to prevent the cover plate 9 from rusting due to liquid corrosion, meanwhile, the cover plate 9 protects the inner threads of the threaded hole of the butterfly plate 1, the anti-rust screws 8, the friction pad 5 is embedded in the joint of the butterfly plate 1 and the valve rod 4, so that the joint of the butterfly plate 1 and the valve rod 4 can be prevented from being stressed and worn.
The invention relates to a butterfly valve rod and butterfly plate positioning structure, which comprises a butterfly plate 1, a locknut 2, an inner hexagonal thread stepped pin 3, a valve rod 4, a friction pad 5, a fixed block 6, a rubber layer 7, an antirust screw 8 and a cover plate 9, wherein the parts are all universal standard parts or parts known by technicians in the field, and the structure and the principle of the butterfly valve rod and the butterfly plate positioning structure can be known by technicians in the field through technical manuals or conventional experimental methods.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (5)
1. The utility model provides a structure of butterfly valve rod and butterfly plate location, includes butterfly plate (1), locknut (2), hexagon socket head cap thread shoulder pin (3) and valve rod (4), its characterized in that: the back of butterfly plate (1) is bored and is attacked threaded hole, and the screw hole of butterfly plate (1) runs through butterfly plate (1), the front side and valve rod (4) of butterfly plate (1) link up, and valve rod (4) link up the outer wall of department with butterfly plate (1) and seted up the locating hole, the head and the tail both ends of hexagon socket head cap screw ladder round pin (3) have been connect soon between the locating hole of valve rod (4) and the screw hole of butterfly plate (1), the tail end of hexagon socket head cap screw ladder round pin (3) links up lock nut (2), and lock nut (2) threaded connection is downthehole in the screw thread of butterfly plate (1) back end, the back end outside of butterfly plate (1) can be dismantled and be connected with apron (9), and apron (9) cover in the screw hole top of butterfly plate (1), hexagon socket head cap screw ladder round pin (3) are the ladder round pin of hexagon socket head cap screw thread in one.
2. The structure for positioning the valve rod and the butterfly plate of the butterfly valve according to claim 1, wherein: the head end of the hexagonal thread stepped pin (3) is screwed out of the front end of the threaded hole of the butterfly plate (1), and the front end of the inner hexagonal thread stepped pin (3) is screwed into the positioning hole of the valve rod (4).
3. The structure for positioning the valve rod and the butterfly plate of the butterfly valve according to claim 1, wherein: the anti-loosening nut (2) is screwed into the bolt hole of the butterfly plate (1) after the inner hexagonal thread stepped pin (3) is screwed into the bolt hole of the butterfly plate (1).
4. The structure for positioning the valve rod and the butterfly plate of the butterfly valve according to claim 1, wherein: and a friction pad (5) is embedded in the joint of the butterfly plate (1) and the valve rod (4).
5. The structure for positioning the valve rod and the butterfly plate of the butterfly valve according to claim 1, wherein: the two sides of the joint of the cover plate (9) and the butterfly plate (1) are in interference connection with a fixing block (6), the two ends of the fixing block (6) are provided with antirust screws (8) screwed in fixing plates (6), the top ends of the antirust screws (8) are screwed in the butterfly plate (1), and the outer side of the cover plate (9) is wrapped with a rubber layer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896945.9A CN110594423A (en) | 2019-09-23 | 2019-09-23 | Structure for positioning valve rod and butterfly plate of butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896945.9A CN110594423A (en) | 2019-09-23 | 2019-09-23 | Structure for positioning valve rod and butterfly plate of butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110594423A true CN110594423A (en) | 2019-12-20 |
Family
ID=68862254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910896945.9A Pending CN110594423A (en) | 2019-09-23 | 2019-09-23 | Structure for positioning valve rod and butterfly plate of butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110594423A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2259530Y (en) * | 1996-04-20 | 1997-08-13 | 刘昌岭 | Double-eccentric insulation butterfly valve |
| JP2002181202A (en) * | 2000-12-13 | 2002-06-26 | Tomoe Tech Res Co | Central type rubber butterfly valve |
| CN101010504A (en) * | 2004-06-22 | 2007-08-01 | 玛勒有限公司 | Assembled piston for an internal combustion engine |
| KR20100028383A (en) * | 2008-09-04 | 2010-03-12 | 주식회사 클래드 | Improved pressure valve with pressure indicating function and pressure exhausting function |
| CN202074052U (en) * | 2011-05-11 | 2011-12-14 | 赵雷 | Seawater resistant rubber lined eccentric butterfly valve |
| CN203020709U (en) * | 2012-12-05 | 2013-06-26 | 沈阳远大铝业工程有限公司 | Threaded hole protection plugging cap |
| CN203202253U (en) * | 2013-03-30 | 2013-09-18 | 杭州春江阀门有限公司 | Connecting and fastening device of butterfly valve butterfly plate |
| CN203703183U (en) * | 2014-02-24 | 2014-07-09 | 成都川力智能流体控制设备有限公司 | Butterfly valve with valve rod fixed by use of combination of taper pin and flat key |
| CN205226397U (en) * | 2015-12-04 | 2016-05-11 | 上海安阀流体控制有限公司 | Valve rod and butterfly plate hookup location structure formula butterfly valve |
-
2019
- 2019-09-23 CN CN201910896945.9A patent/CN110594423A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2259530Y (en) * | 1996-04-20 | 1997-08-13 | 刘昌岭 | Double-eccentric insulation butterfly valve |
| JP2002181202A (en) * | 2000-12-13 | 2002-06-26 | Tomoe Tech Res Co | Central type rubber butterfly valve |
| CN101010504A (en) * | 2004-06-22 | 2007-08-01 | 玛勒有限公司 | Assembled piston for an internal combustion engine |
| KR20100028383A (en) * | 2008-09-04 | 2010-03-12 | 주식회사 클래드 | Improved pressure valve with pressure indicating function and pressure exhausting function |
| CN202074052U (en) * | 2011-05-11 | 2011-12-14 | 赵雷 | Seawater resistant rubber lined eccentric butterfly valve |
| CN203020709U (en) * | 2012-12-05 | 2013-06-26 | 沈阳远大铝业工程有限公司 | Threaded hole protection plugging cap |
| CN203202253U (en) * | 2013-03-30 | 2013-09-18 | 杭州春江阀门有限公司 | Connecting and fastening device of butterfly valve butterfly plate |
| CN203703183U (en) * | 2014-02-24 | 2014-07-09 | 成都川力智能流体控制设备有限公司 | Butterfly valve with valve rod fixed by use of combination of taper pin and flat key |
| CN205226397U (en) * | 2015-12-04 | 2016-05-11 | 上海安阀流体控制有限公司 | Valve rod and butterfly plate hookup location structure formula butterfly valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191220 |