CN111120666A - Novel pneumatic expansion butterfly valve convenient to maintain - Google Patents
Novel pneumatic expansion butterfly valve convenient to maintain Download PDFInfo
- Publication number
- CN111120666A CN111120666A CN201911386579.9A CN201911386579A CN111120666A CN 111120666 A CN111120666 A CN 111120666A CN 201911386579 A CN201911386579 A CN 201911386579A CN 111120666 A CN111120666 A CN 111120666A
- Authority
- CN
- China
- Prior art keywords
- wall
- ring seat
- annular
- valve
- movable ring
- 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
Links
Images
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
- F16K1/226—Shaping or arrangements of the sealing
-
- 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
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a novel pneumatic expansion butterfly valve convenient to maintain, which belongs to the field of valves and comprises a valve body, a valve rod, a butterfly plate and a rubber expansion ring, wherein the valve rod is fixedly connected to the end surface of the butterfly plate; the rubber expansion ring comprises an annular body and two annular clamping rings, the annular clamping rings are outwards turned and matched with the annular groove, and the two annular clamping rings are respectively pressed by a pressing ring and the retaining ring; a plurality of positioning pins which are uniformly distributed in the circumferential direction are arranged on the outer wall of the valve body in a penetrating manner, and a positioning pin hole is formed in the movable ring seat; an inflation hole communicated with the rubber expansion ring is formed in the circumferential outer wall of the movable ring seat, an inflation connector is connected to the outer wall of the valve body in a threaded mode, and the inflation connector is connected with the inflation hole in a threaded mode. The rubber expansion ring replacing device is simple in structure, reasonable in design and capable of conveniently and quickly replacing the rubber expansion ring.
Description
Technical Field
The invention relates to the field of valves, in particular to a novel pneumatic expansion butterfly valve convenient to maintain.
Background
The butterfly valve is also called as a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which has a closing member (a valve clack or a butterfly plate) as a disk and can rotate around a valve shaft to open and close; the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.
The pneumatic expansion butterfly valve is developed at present, the valve replaces the valve seat by the rubber expansion ring arranged on the inner wall of the valve body, when the butterfly plate rotates, the rubber expansion ring is in a normal state, almost no large friction exists between the butterfly plate and the valve seat, and after the butterfly plate reaches a closed position, the rubber expansion ring expands by inflating, so that the rubber expansion ring is in close contact with the circumferential side wall of the butterfly plate, and the sealing effect on the butterfly plate is achieved. For example, the chinese utility model patent publication No. CN 207093796U.
However, the process of replacing the rubber expansion ring of the existing pneumatic expansion butterfly valve is complicated, and the rubber expansion ring can be replaced and maintained only by disassembling the whole butterfly valve; simultaneously, the valve rod need pass the rubber expansion circle, and this can lead to the valve rod to seal with the accomplish that the clearance that the rubber expansion circle is connected can not be fine.
Disclosure of Invention
Aiming at the problems that the rubber expansion ring is troublesome to replace in a pneumatic expansion butterfly valve and the sealing effect of the joint of a valve rod and the rubber expansion ring is poor in the prior art, the invention aims to provide a novel pneumatic expansion butterfly valve convenient to maintain.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a novel pneumatic expansion butterfly valve convenient to maintain comprises a valve body, a valve rod, a butterfly plate and a rubber expansion ring, wherein the valve rod is fixedly connected to the end face of the butterfly plate; the annular expansion ring comprises an annular body and annular clamping rings arranged on two sides of the annular body, the annular clamping rings are outwards turned and matched with the annular groove, a pressing ring used for pressing the annular clamping rings is fixedly connected to one end face of the movable ring seat, and the annular clamping rings embedded on the other end face of the movable ring seat are pressed through the blocking rings; the inner wall of the circumference of the valve body is also provided with an axial guide convex edge, and the outer wall of the circumference of the movable ring seat is provided with an axial guide groove matched with the axial guide convex edge; a plurality of positioning pins which are uniformly distributed in the circumferential direction are arranged on the circumferential outer wall of the valve body in a penetrating manner, and a plurality of positioning pin holes matched with the positioning pins are arranged on the circumferential outer wall of the movable ring seat; the pneumatic valve is characterized in that an inflation hole communicated with the rubber expansion ring is formed in the circumferential outer wall of the movable ring seat, an inflation connector penetrating through the circumferential outer wall of the valve body is connected to the circumferential outer wall of the valve body through threads, and the inflation connector is connected with the inflation hole through threads.
Preferably, the cross section of the axial guide lug is semicircular or rectangular or trapezoidal.
Furthermore, a plurality of axial accommodating grooves which are uniformly distributed in the circumferential direction are further formed in the circumferential outer wall of the movable ring seat.
Preferably, the positioning pin and the positioning pin hole are both conical.
Furthermore, the baffle ring is provided with a threaded hole or a through hole which is opposite to the end face of the movable ring seat.
By adopting the technical scheme, the valve rod is fixedly connected to the end face of the butterfly plate, so that the valve rod does not need to penetrate through the circumferential outer wall of the butterfly plate, the rubber expansion ring can be completely coated on the circumferential outer wall of the butterfly plate in an integral annular form, and the condition that the joint of the valve rod and the rubber expansion ring is not tightly sealed is avoided; due to the arrangement of the movable ring seat, the movable ring seat can carry the rubber expansion ring to be quickly and conveniently arranged in the valve body at a correct position through the limitation of the axial guide convex edge, and is positioned at the correct installation position under the positioning of the positioning pin, so that the rubber expansion ring is ensured to be opposite to the butterfly plate, and meanwhile, the arrangement of the inflation hole and the inflation joint can ensure the inflation and deflation operation of the rubber expansion ring; and due to the arrangement of the baffle ring and the pressing ring, on one hand, the rubber expansion ring can be ensured to be compressed and fixed and cannot fall off easily, and on the other hand, the annular clamping ring clamped between the baffle ring and the movable ring seat also plays a role of a sealing ring, so that the fluid medium cannot leak from the position between the baffle ring and the movable ring seat.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a partially enlarged view of B in fig. 1.
In the drawing, 1-valve body, 11-axial guide convex edge, 2-valve rod, 3-butterfly plate, 31-connecting sleeve, 4-rubber expansion ring, 41-annular body, 42-annular retainer ring, 5-baffle ring, 6-movable ring seat, 61-annular groove, 62-inflation hole, 7-positioning pin, 8-inflation joint and 9-pressing ring.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on structures shown in the drawings, and are only used for convenience in describing the present invention, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the technical scheme, the terms "first" and "second" are only used for referring to the same or similar structures or corresponding structures with similar functions, and are not used for ranking the importance of the structures, or comparing the sizes or other meanings.
In addition, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, e.g., the connection may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two structures can be directly connected or indirectly connected through an intermediate medium, and the two structures can be communicated with each other. To those skilled in the art, the specific meanings of the above terms in the present invention can be understood in light of the present general concepts, in connection with the specific context of the scheme.
As shown in fig. 1-3, a novel pneumatic expansion butterfly valve convenient for maintenance comprises a valve body 1, a valve rod 2, a butterfly plate 3 and a rubber expansion ring 4. Usually, the valve body 1 is cylindrical, and the side wall thereof is provided with a shaft hole, and the lower end of the valve rod 2 is fixedly connected with the butterfly plate 3 after passing through the shaft hole; in addition, a pneumatic actuator is fixedly arranged on the valve body 1, and the output end of the pneumatic actuator is connected with the upper end of the valve rod 2 and is used for driving the valve rod 2 to rotate; meanwhile, a packing groove is formed in the shaft hole, packing is arranged in the packing groove, and the packing is compressed and fixed through a packing gland.
In the embodiment, firstly, the valve rod 2 is fixedly connected to the end face of the butterfly plate 3, and the arrangement is such that the valve rod 2 does not need to pass through the circumferential side wall of the butterfly plate 3; and a connecting sleeve 31 is fixed on the end face of the butterfly plate 3, the valve rod 2 is inserted in the connecting sleeve 31, and the two are fixed through a key or a pin.
The embodiment also comprises a baffle ring 5 and a movable ring seat 6; the baffle ring 5 is in a ring shape, and the circumferential outer wall of the baffle plate 5 is coaxially fixed on the circumferential inner wall of the valve body 1, for example, by welding or integrally forming.
The movable ring seat 6 is also annular, and two opposite end faces of the movable ring seat 6 are provided with annular clamping grooves 61; correspondingly, in the present embodiment, the rubber expansion ring 4 is also annular, the rubber expansion ring 4 includes an annular body 41 and annular collars 42 arranged on both sides of the annular body 41, the annular collars 41 are 7-shaped and arranged at the side edges of the annular body 41 in an everted manner, and of course, the rubber expansion ring 4 is manufactured by integral molding.
A part of the end part of the annular collar 41 which is gathered is embedded in the annular groove 61 and is matched with the annular groove 61. In this embodiment, in order to compress the rubber expansion ring 4, a compression ring 9 for compressing the annular collar 42 is fixedly connected to one end surface of the movable ring seat 6, and the compression ring 9 is fixed to the end surface of the movable ring seat 6 by a plurality of screws. In addition, the annular collar 42 with the end part embedded on the other end surface of the movable ring seat 6 is pressed by the baffle ring 5.
In order to facilitate the taking and the assembling of the movable ring seat 6, in the embodiment, firstly, the outer wall of the movable ring seat 6 is in clearance fit with the inner wall of the valve body 1, which can be understood from the name of the movable ring seat 6; the inner wall of the circumference of the valve body 1 is also provided with axial guide convex ridges 11, the outer wall of the circumference of the movable ring seat 6 is correspondingly provided with axial guide grooves matched with the axial guide convex ridges 11, and the axial guide convex ridges 11 and the axial guide grooves are provided with a plurality of axial guide convex ridges 11 and are uniformly distributed in the circumferential direction; the cross section of the axial guide convex ridge 11 can be semicircular, rectangular or trapezoidal. Simultaneously in order to prevent that activity ring seat 6 from being by the dregs jam in the fluid medium, still be provided with the axial storage tank of a plurality of circumference evenly distributed on the circumference outer wall of activity ring seat 6, this axial storage tank can the holding dregs, and the resistance when making activity ring seat 6 get the dress is littleer also to be changed conveniently.
In order to fix the position of the movable ring seat 6, in this embodiment, a plurality of positioning pins 7 are uniformly distributed in the circumferential direction and penetrate through the outer circumferential wall of the valve body 1, a plurality of positioning pin holes matched with the positioning pins 7 are correspondingly formed in the outer circumferential wall of the movable ring seat 6, and the movable ring seat 6 is fixed at a specific position by the positioning pins 7 and cannot move. The positioning pin 7 and the positioning pin hole are both conical, so that a good positioning effect is ensured.
In order to inflate the rubber expansion ring 4, in the embodiment, an inflation hole 62 communicated with the rubber expansion ring 4 is arranged on the circumferential outer wall of the movable ring seat 6 (it can be understood that the inflation hole 62 is communicated with the circumferential outer wall and the circumferential inner wall of the movable ring seat 6), and meanwhile, an inflation connector 8 penetrating through the circumferential outer wall of the valve body 1 is in threaded connection with the circumferential outer wall of the valve body 1, and the inflation connector 8 is opposite to and in threaded connection with the inflation hole 62.
In order to make the movable ring seat 6 more convenient and easy to take out, in this embodiment, a threaded hole or a through hole facing the end face of the movable ring seat 6 is provided on the baffle ring 5. When the movable ring seat 6 is taken down, the screw is screwed in the threaded hole, and the movable ring seat 6 is loosened through the jacking action of the screw on the movable ring seat; or the impact rod penetrates into the through hole, and the movable ring seat 6 is loosened by impacting the impact rod. Of course, the threaded holes or the through holes are also provided in a plurality and are circumferentially and uniformly distributed.
When in use, firstly, the two annular clamping rings 42 of the rubber expansion ring 4 are respectively clamped in the annular grooves 61 on the two end surfaces of the movable ring seat 6, and then the pressing ring 9 is fixed on one end surface of the movable ring seat 6 through a screw to tightly press one of the annular clamping rings 42; then the other end surface of the movable ring seat 6 faces the baffle ring 5, the other end surface is arranged in the valve body 1 through the axial guide convex edge 11, and the other annular clamping ring 42 of the rubber expansion ring 4 is pressed on the baffle ring 5 to form a sealing surface; then installing a plurality of positioning pins 7, so that the end parts of the positioning pins 7 extend into positioning pin holes on the circumferential outer wall of the movable ring seat 6, and the position of the movable ring seat 6 is fixed; finally, screwing the air charging connector 8 to lead the air charging connector 8 to be connected into the air charging hole on the circumferential outer wall of the movable ring seat 6 in a threaded manner; when the valve body 1 needs to be sealed, the pneumatic actuator drives the valve rod 2 to rotate, the butterfly plate 3 rotates to a sealing position, the circumferential side wall of the butterfly plate 3 better faces the movable ring seat 6 (specifically faces the rubber expansion ring 4), gas is filled into a cavity formed by the rubber expansion ring 4 and the movable ring seat 6 through the gas filling joint 8, and the circumferential side wall of the butterfly plate 3 can be sealed after the rubber expansion ring 4 expands; when the valve body 1 is not required to be sealed, the cavity formed by the rubber expansion ring 4 and the movable ring seat 6 is restored only by discharging air through the air charging connector 8.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (5)
1. The utility model provides a novel pneumatic expansion butterfly valve convenient to maintain, includes valve body, valve rod, butterfly plate and rubber expansion ring, its characterized in that: the valve rod is fixedly connected to the end face of the butterfly plate; the annular expansion ring comprises an annular body and annular clamping rings arranged on two sides of the annular body, the annular clamping rings are outwards turned and matched with the annular groove, a pressing ring used for pressing the annular clamping rings is fixedly connected to one end face of the movable ring seat, and the annular clamping rings embedded on the other end face of the movable ring seat are pressed through the blocking rings; the inner wall of the circumference of the valve body is also provided with an axial guide convex edge, and the outer wall of the circumference of the movable ring seat is provided with an axial guide groove matched with the axial guide convex edge; a plurality of positioning pins which are uniformly distributed in the circumferential direction are arranged on the circumferential outer wall of the valve body in a penetrating manner, and a plurality of positioning pin holes matched with the positioning pins are arranged on the circumferential outer wall of the movable ring seat; the pneumatic valve is characterized in that an inflation hole communicated with the rubber expansion ring is formed in the circumferential outer wall of the movable ring seat, an inflation connector penetrating through the circumferential outer wall of the valve body is connected to the circumferential outer wall of the valve body through threads, and the inflation connector is connected with the inflation hole through threads.
2. The novel pneumatic expansion butterfly valve convenient for maintenance of claim 1, wherein: the cross section of the axial guide convex edge is semicircular or rectangular or trapezoidal.
3. The novel pneumatic expansion butterfly valve convenient for maintenance of claim 1, wherein: and a plurality of axial accommodating grooves which are uniformly distributed in the circumferential direction are also formed in the circumferential outer wall of the movable ring seat.
4. The novel pneumatic expansion butterfly valve convenient for maintenance of claim 1, wherein: the positioning pin and the positioning pin hole are conical.
5. The novel pneumatic expansion butterfly valve convenient for maintenance of claim 1, wherein: the baffle ring is provided with a threaded hole or a through hole which is just opposite to the end face of the movable ring seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911386579.9A CN111120666A (en) | 2019-12-29 | 2019-12-29 | Novel pneumatic expansion butterfly valve convenient to maintain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911386579.9A CN111120666A (en) | 2019-12-29 | 2019-12-29 | Novel pneumatic expansion butterfly valve convenient to maintain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111120666A true CN111120666A (en) | 2020-05-08 |
Family
ID=70504370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911386579.9A Pending CN111120666A (en) | 2019-12-29 | 2019-12-29 | Novel pneumatic expansion butterfly valve convenient to maintain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111120666A (en) |
-
2019
- 2019-12-29 CN CN201911386579.9A patent/CN111120666A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6811140B1 (en) | Shut-off valve assembly | |
| JPWO2016093271A1 (en) | Rotary valve and rapid exhaust valve for railway vehicles | |
| CN207111971U (en) | A kind of ball valve | |
| CN109780230B (en) | Anti-freezing pressure relief butterfly valve | |
| CN110792787B (en) | Stop valve | |
| CN211039763U (en) | High-temperature high-pressure hard sealing ball valve | |
| US7201188B2 (en) | Fluted reciprocating ball valve | |
| CN111120666A (en) | Novel pneumatic expansion butterfly valve convenient to maintain | |
| US7717136B2 (en) | Pipeline closing apparatus | |
| CN215568007U (en) | Double-valve-plate high-sealing butterfly valve | |
| US4084786A (en) | Valves | |
| CN212028648U (en) | Bivalve check valve | |
| CN211175422U (en) | Bidirectional sealing rotary ball valve | |
| CN211231610U (en) | Novel pneumatic expansion butterfly valve | |
| US20060027771A1 (en) | Reciprocating ball type angle valve | |
| CN112923119A (en) | Valve rod upper seat with built-in multidirectional buffer mechanism | |
| CN219975437U (en) | Ball valve with better sealing performance | |
| CN110762232A (en) | Metal sealing double-plate hydraulic adjusting butterfly valve | |
| CN219035570U (en) | High leakproofness butterfly valve | |
| CN219975393U (en) | Sealing structure of butterfly valve | |
| CN219452952U (en) | High temperature resistant ball valve | |
| CN221323324U (en) | Expansion butterfly valve | |
| CN211820841U (en) | Antibiotic diaphragm valve | |
| CN218440684U (en) | Split type easy-to-split butterfly valve | |
| CN220910538U (en) | Diaphragm valve with locking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |