CN112923106B

CN112923106B - Novel butterfly type double-plate check valve

Info

Publication number: CN112923106B
Application number: CN202011278961.0A
Authority: CN
Inventors: 裴叶青; 滕伏海; 国伟兴; 肖桂明
Original assignee: Tianjin Ots Valve Manfacturing Co ltd
Current assignee: Tianjin Ots Valve Manfacturing Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2022-07-12
Anticipated expiration: 2040-11-16
Also published as: CN112923106A

Abstract

The invention discloses a novel butterfly type double-plate check valve which comprises a valve body and a water through hole, wherein the water through hole is formed in the valve body and used for water through, and an interception component used for one-way conduction is arranged in the water through hole in a matched mode; the intercepting component comprises an inner ring plate arranged in an inner cavity of the valve body, two semicircular sealing rings are arranged on the inner ring plate, and the surfaces of the inner ring plates outside the sealing rings are provided with the semicircular sealing rings in a closed structure; set up water conservancy diversion spare at the butterfly plate back, when the return water, water can be through this concave surface with the direction of butterfly plate area to kick-backing, and the water hammer that produces when the pressure of return water is too big simultaneously can be decomposed to other directions by the arch at the butterfly plate back, rather than all pressing the butterfly plate like the flat board on, the effectual life who improves the part.

Description

Novel butterfly type double-plate check valve

Technical Field

The invention relates to the technical field of valves, in particular to a novel butterfly type double-plate check valve.

Background

The function of a butterfly check valve is to allow the medium to flow in one direction only, but to prevent the flow in the other direction. Typically such valves are self-actuating, with the flap opening under the pressure of a fluid flowing in one direction; when the fluid flows in the opposite direction, the valve flap is combined by the fluid pressure and the self-weight of the valve flap to act on the valve seat, thereby cutting off the flow.

Current valve punches the valve body both sides when in-service use, is unfavorable for guaranteeing the leakproofness of valve body to when the butterfly plate is opened, receive the rivers striking, the last axle lug platform of check valve can and take place the striking between the valve rod, and then the noise production, be unfavorable for improving the life of device.

Disclosure of Invention

The present invention is directed to a novel butterfly-type double-plate check valve, which solves the above problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

a novel butterfly type double-plate check valve comprises a valve body and a water through hole which is arranged on the valve body and used for water through, wherein an interception component used for one-way conduction is arranged in the water through hole in a matched mode;

the intercepting component comprises an inner ring plate arranged in an inner cavity of the valve body, two sealing ports in a semicircular structure are formed in the inner ring plate, a sealing base plate in a closed structure is arranged on the surface of the inner ring plate outside the sealing ports, and a semicircular sealing ring is arranged on the upper surface of the sealing base plate;

the intercepting component further comprises a first plate body and a second plate body which are used for respectively plugging the two sealing ports, sealing surfaces which are in abutting contact with the sealing rings to realize line sealing are arranged on the lower end surfaces of the first plate body and the second plate body, and the first plate body and the second plate body are arranged in the inner cavity of the valve body through mounting pieces which are convenient to disassemble;

the mounting piece comprises a valve rod arranged in the center of the valve body, two ends of the valve rod are respectively and rotatably arranged at the lower end of a mounting block, a connecting sleeve rotatably arranged at the end part of the valve rod is arranged on the surface of the lower end of the mounting block, the outer end of the valve rod is connected with a semicircular block, the semicircular block is matched with a mounting groove hole in the upper end of the valve body, and the mounting groove hole and the semicircular block are respectively provided with mounting holes matched for bolt connection;

the first plate body and the second plate body are both provided with two lugs, the lugs on the two plate bodies are arranged in a staggered manner, a rotating hole convenient for a valve rod to penetrate through is formed in the middle of each lug, the valve rod is sleeved with two reset torsion springs in a matched manner, two reset ends of each reset torsion spring are respectively connected with a reset deflector rod, and the two reset deflector rods on the two reset torsion springs are respectively in abutting contact with the surfaces of the first plate body and the second plate body;

the upstream surfaces of the first plate body and the second plate body are provided with a flow guide part for dispersing water flow to realize uniform stress of the butterfly plate;

the tail end of the reset deflector rod is provided with a flow guide piece matched with the surface of the first plate body or the second plate body, and the flow guide piece is used for reducing the friction force between the end part of the reset deflector rod and the surface of the first plate body or the second plate body.

As a further scheme of the invention: and the side surface of the mounting block is provided with a buffer block which is used for abutting against the side surface of the mounting block so as to reduce the impact force between the components.

As a further scheme of the invention: the flow guide piece comprises a second lug arranged on the surface of the first plate body or the second plate body, the second lug is of a lug structure with a high middle part and a low periphery, and a first lug used for improving mechanical property is further arranged on the outer side of the lug structure.

As a further scheme of the invention: and the upper end of the mounting groove hole is also provided with an auxiliary positioning groove matched with the auxiliary positioning block at the bottom of the semicircular block.

As a further scheme of the invention: the diversion part comprises a fixed shaft arranged at the tail end of the reset deflector rod, the fixed shaft and the reset deflector rod are arranged perpendicularly, guide wheels are arranged at two ends of the fixed shaft, two enclosing baffles are symmetrically arranged on the surfaces of a second plate body or a first plate body on two sides of the reset deflector rod, the distance between the two enclosing baffles is equal to the distance between the two guide wheels, and therefore when the first plate body and the second plate body rotate around the valve rod, the end parts of the reset deflector rod at two ends of the reset torsion spring can abut against and press the surface of the first plate body or the surface of the second plate body to slide.

As a still further scheme of the invention: the diversion part comprises a connecting rod welded and fixed with the end of the reset deflector rod, a rotary table is arranged at the end of the connecting rod, the rotary table is rotatably connected with the connecting rod, a plurality of spherical cavities are distributed on the outer side of the rotary table in an array mode, a ball is arranged in each spherical cavity in a matched mode, two enclosing baffles are symmetrically arranged on the surfaces of the second plate body or the first plate body on the two sides of the reset deflector rod, and the distance between the two enclosing baffles is equal to the width of the rotary table.

Compared with the prior art, the invention has the beneficial effects that:

the valve rod is directly put in from the inside of the valve body without punching holes on the two sides of the valve body, so that the whole sealing performance of the valve body is ensured;

the back of the butterfly plate is provided with the flow guide piece, when water returns, the butterfly plate is provided with the water hammer in the rebounding direction through the concave surface, and the water hammer generated when the pressure of the returned water is too high can be decomposed in other directions by the bulge on the back of the butterfly plate instead of being completely pressed on the butterfly plate like a flat plate, so that the service life of the part is effectively prolonged;

this application adopts the line to seal and replaces traditional face to seal, and sealed effect is better.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the upper side of the trap module according to the present invention.

FIG. 3 is a schematic view of the underside of the trap assembly of the present invention.

Fig. 4 is a schematic structural view of the valve body of the present invention.

FIG. 5 is a schematic view of the structure of the sealing pad of the present invention

Fig. 6 is a schematic structural view of a first flow guide member of the present invention.

Fig. 7 is a schematic structural view of a second flow guide member of the present invention.

Wherein: the valve comprises an interception component 100, a valve body 200, a first plate body 11, a first lug 12, a second lug 13, a shaft lug 14, a second plate body 15, a valve rod 16, a reset deflector rod 18, a mounting block 19, a mounting hole 20, an auxiliary positioning block 21, a semicircular block 22, a sealing surface 23, a connecting sleeve 24, a guide wheel 25, a fence 26, a rotary disc 27, a ball 28, a connecting rod 29, a buffer block 30 and a concave area 32;

the water through hole 201, a sealing ring 202, an installation slot hole 203, an auxiliary positioning groove 204, an inner ring plate 205, a sealing opening 206, a sealing backing plate 212, a split retaining ring 1601 and a gasket 1602.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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.

Referring to fig. 1-7, in the embodiment of the present invention, a novel butterfly-type double-plate check valve includes a valve body 200 and a water passage hole 201 disposed thereon for water passage, wherein an interception component 100 for one-way communication is disposed in the water passage hole 201;

the interception component 100 comprises an inner ring plate 205 arranged on the inner wall of the valve body 200, two semicircular sealing ports 206 are formed in the inner ring plate 205, a sealing cushion plate 212 in a closed structure is arranged on the surface of the inner ring plate 205 on the outer side of each sealing port 206, a semicircular sealing ring 202 is arranged on the upper surface of each sealing cushion plate 212, and the upper end surface of each sealing ring 202 is in a round arrangement;

the interception assembly 100 further comprises a first plate body 11 and a second plate body 15 for respectively blocking the two sealing ports 206, wherein the lower end surfaces of the first plate body 11 and the second plate body 15 are respectively provided with a sealing surface 23 which is in abutting contact with the sealing ring 202 to realize line sealing, and the first plate body 11 and the second plate body 15 are arranged on the inner wall of the valve body 200 through mounting pieces convenient to detach;

the mounting part comprises a valve rod 16 arranged at the center of the valve body 200, two ends of the valve rod 16 are respectively rotatably arranged at the lower end of a mounting block 19, the surface of the lower end of the mounting block 19 is provided with a connecting sleeve 24 rotatably arranged with the end part of the valve rod 16, the outer end of the valve rod 16 is connected with a semicircular block 22, the semicircular block 22 is matched with a mounting groove hole 203 at the upper end of the valve body 200, the mounting groove hole 203 and the semicircular block 22 are both provided with mounting holes 20 matched with bolts for connection, and the upper end of the mounting groove hole 203 is also provided with an auxiliary positioning groove 204 matched with an auxiliary positioning block 21 at the bottom of the semicircular block 22;

the first plate body 11 and the second plate body 15 are both provided with two lugs 14, the lugs 14 on the two plate bodies are arranged in a staggered manner, a rotating hole convenient for the valve rod 16 to penetrate through is formed in the middle of each lug 14, the valve rod 16 is sleeved with two reset torsion springs in a matched manner, two reset ends of each reset torsion spring are respectively connected with one reset deflector rod 18, the two reset deflector rods 18 on the two reset torsion springs are respectively in pressing contact with the surfaces of the first plate body 11 and the second plate body 15, and the reset torsion springs are used for shifting the first plate body 11 and the second plate body 15 to rotate so that the sealing surface 23 is in pressing contact with the sealing ring 202, the butterfly valve is closed, and the reset torsion springs are forcibly compressed only under the action of water flow, so that the sealing opening 206 is communicated;

the valve rod 16 is provided with a split retainer ring 1601 for limiting the sliding of the reset torsion spring, so that the problem of offset sliding of the reset spring in the long-term working process is prevented;

two gaskets 1602 are respectively arranged at two ends of the valve rod 16, and each pair of the shaft lugs and the shaft lugs are isolated from the inner wall of the valve body by the two gaskets, so that the problem of abrasion among components can be reduced;

the upstream surfaces of the first plate body 11 and the second plate body 15 are both provided with a flow guide part for dispersing water flow to realize uniform stress of the butterfly plate, the flow guide part comprises a second lug 13 arranged on the surface of the first plate body 11 or the second plate body 15, the second lug 13 is a lug structure with a high middle part and a low periphery, and the outer side of the lug structure is also provided with a first lug 12 for improving mechanical property;

the other side surfaces of the first plate body 11 and the second plate body 15, which are opposite to the second convex block 13 and the first convex block 12, are provided with concave surface regions 32, and the concave surface regions are helpful for converging water flow impact force, so that the response speed of the plate bodies is improved;

the side surface of the mounting block 19 is provided with a buffer block 30 which is used for abutting against the side surface of the mounting block 19 to reduce the impact force between the components, so that when water flow impacts the first plate body 11 or the second plate body 15, the first plate body 11 and the second plate body 15 are opened at a certain angle, the surfaces of the first plate body 11 and the second plate body 15 are in abutting contact with the mounting block 19, impact is generated, and the noise pollution and the abrasion of the components caused by the impact of the components are reduced by arranging the buffer block;

the end of the reset deflector rod 18 is provided with a flow guide element matched with the surface of the first plate body 11 or the second plate body 15, the flow guide element is used for reducing the friction force between the end of the reset deflector rod 18 and the surface of the first plate body 11 or the second plate body 15, thereby reducing the loss, the flow guide element comprises a fixed shaft arranged at the end of the reset deflector rod 18, the fixed shaft is arranged vertically to the reset deflector rod 18, two guide wheels 25 are arranged at two ends of the fixed shaft, two barriers 26 are symmetrically arranged on the surface of the second plate body 15 or the first plate body 11 at two sides of the reset deflector rod 18, the distance between the two barriers 26 is equivalent to the distance between the two guide wheels 25, thus when the first plate body 11 and the second plate body 15 rotate around the valve rod 16, the end of the reset deflector rod 18 at two ends of the reset torsion spring can press the surface of the first plate body 11 or the second plate body 15 to slide, at the moment, under the guide of the guide wheels 25, the reset deflector rod 18 is in rolling contact with the first plate body 11 or the second plate body 15, thereby greatly reducing the abrasion of the parts;

the diversion part can also be designed as shown in fig. 6, the diversion part comprises a connecting rod 29 welded and fixed with the end of the reset deflector rod 18, a rotary disc 27 is arranged at the end of the connecting rod 29, the rotary disc 27 is rotatably connected with the connecting rod 29, a plurality of spherical cavities are distributed in an array mode outside the rotary disc 27, a ball 28 is arranged in each spherical cavity in a matched mode, two enclosing baffles 26 are symmetrically arranged on the surfaces of the second plate body 15 or the first plate body 11 on two sides of the reset deflector rod 18, the distance between the two enclosing baffles 26 is equal to the width of the rotary disc 27, the rotary disc and the balls are matched to achieve rolling connection of the end of the reset deflector rod 18 and the first plate body 11 or the second plate body 15, and abrasion is reduced.

The working principle of the invention is as follows: install first plate body 11 and second plate body 15 inside valve body 200 through the installed part, just so need not at the surperficial trompil of valve body 200, sealing performance has been guaranteed, and here the striking of buffering butterfly plate and the valve body is inside, wearing and tearing and noise have been reduced, support press contact through setting up sealing ring 202 and sealed face 23 and realize line seal, the effectual sealed effect that has improved, avoid first plate body 11 and the local atress of second plate body 15 through setting up of water conservancy diversion spare, make the mechanical properties of butterfly plate better, also make line seal position atress more even.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A novel butterfly type double-plate check valve comprises a valve body (200) and a water through hole (201) arranged on the valve body and used for water through, wherein an interception component (100) used for one-way conduction is arranged in the water through hole (201) in a matching mode;

the intercepting component is characterized by comprising an inner ring plate (205) arranged on the inner wall of a valve body (200), wherein two sealing ports (206) in a semicircular structure are formed in the inner ring plate (205), a sealing base plate (212) in a closed structure is arranged on the surface of the inner ring plate (205) on the outer side of each sealing port (206), and a semicircular sealing ring (202) is arranged on the upper surface of the sealing base plate (212);

the interception assembly (100) further comprises a first plate body (11) and a second plate body (15) which are used for respectively plugging the two sealing ports (206), sealing surfaces (23) which are in abutting contact with the sealing rings (202) to realize line sealing are arranged on the lower end faces of the first plate body (11) and the second plate body (15), and the first plate body (11) and the second plate body (15) are arranged on the inner wall of the valve body (200) through mounting pieces which are convenient to detach;

the mounting piece comprises a valve rod (16) arranged at the center of the valve body (200), two ends of the valve rod (16) are respectively rotatably arranged at the lower end of a mounting block (19), a connecting sleeve (24) rotatably arranged with the end part of the valve rod (16) is arranged on the surface of the lower end of the mounting block (19), the outer end of the valve rod (16) is connected with a semicircular block (22), the semicircular block (22) is matched with a mounting groove hole (203) in the upper end of the valve body (200), and the mounting groove hole (203) and the semicircular block (22) are both provided with mounting holes (20) matched for bolt connection;

the first plate body (11) and the second plate body (15) are respectively provided with two lugs (14), the lugs (14) on the two plate bodies are arranged in a staggered mode, a rotating hole convenient for a valve rod (16) to penetrate through is formed in the middle of each lug (14), the valve rod (16) is sleeved with two reset torsion springs in a matched mode, two reset ends of each reset torsion spring are respectively connected with one reset deflector rod (18), and the two reset deflector rods (18) on the two reset torsion springs are respectively in pressing contact with the surfaces of the first plate body (11) and the second plate body (15);

two gaskets are respectively arranged at two ends of the valve rod (16), and each pair of the shaft lugs and the shaft lugs are isolated from the inner wall of the valve body by the two gaskets;

the valve rod (16) is provided with a split retainer ring for limiting the sliding of the reset torsion spring;

the upstream surfaces of the first plate body (11) and the second plate body (15) are provided with a flow guide part for dispersing water flow to realize uniform stress of the butterfly plate.

2. The novel butterfly double plate check valve of claim 1, wherein the sealing ring (202) upper end surface is rounded.

3. A novel butterfly double-plate check valve according to claim 1, characterized in that the end of the reset lever (18) is provided with a flow guide element which is matched with the surface of the first plate body (11) or the second plate body (15), and the flow guide element is used for reducing the friction force between the end of the reset lever (18) and the surface of the first plate body (11) or the second plate body (15).

4. A novel butterfly type double plate check valve according to claim 1, characterized in that the side of the mounting block (19) is provided with a buffer block for pressing against the side of the mounting block (19) to reduce the impact force between the components.

5. The novel butterfly-type double-plate check valve according to claim 1, wherein the flow guide member comprises a second protrusion (13) arranged on the surface of the first plate body (11) or the second plate body (15), and the second protrusion (13) has a protrusion structure with a high middle part and a low periphery.

6. A novel butterfly double plate check valve according to claim 5, characterized in that the outside of said lug structure is further provided with a first lug (12) for improving mechanical properties.

7. A novel butterfly type double-plate check valve as claimed in claim 1, wherein the upper end of the mounting slot hole (203) is further provided with an auxiliary positioning groove (204) matched with an auxiliary positioning block (21) at the bottom of the semicircular block (22).

8. A novel butterfly type double-plate check valve according to claim 3, characterized in that the guiding element comprises a fixed shaft disposed at the end of the reset deflector rod (18), the fixed shaft is disposed perpendicular to the reset deflector rod (18), the two ends of the fixed shaft are disposed with guiding wheels (25), two enclosing blocks (26) are symmetrically disposed on the surface of the second plate (15) or the first plate (11) at the two sides of the reset deflector rod (18), the distance between the two enclosing blocks (26) is equivalent to the distance between the two guiding wheels (25), so that when the first plate (11) and the second plate (15) rotate around the valve rod (16), the ends of the reset deflector rod (18) at the two ends of the reset torsion spring can press the surface of the first plate (11) or the second plate (15) to slide.

9. A novel butterfly type double-plate check valve according to claim 3, characterized in that the flow guide member comprises a connecting rod (29) welded and fixed with the end of the reset deflector rod (18), a rotary disc (27) is arranged at the end of the connecting rod (29), the rotary disc (27) is rotatably connected with the connecting rod (29), a plurality of spherical cavities are distributed in the outer side of the rotary disc (27) in an array manner, a ball (28) is arranged in each spherical cavity in a matching manner, two barriers (26) are symmetrically arranged on the surfaces of the second plate body (15) or the first plate body (11) at two sides of the reset deflector rod (18), and the distance between the two barriers (26) is equivalent to the width of the rotary disc (27).

10. A novel butterfly double plate check valve according to claim 3, characterized in that the other side of the first plate body (11) and the second plate body (15) opposite to the second projection (13) and the first projection (12) is provided with a concave area (32).