CN210978672U

CN210978672U - Butterfly check valve

Info

Publication number: CN210978672U
Application number: CN201921665039.XU
Authority: CN
Inventors: 段方超; 戴均; 戴欣
Original assignee: Tianjin Longrun Kaida Valve Industry Co ltd
Current assignee: Tianjin Longrun Kaida Valve Industry Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-07-10
Anticipated expiration: 2029-09-30

Abstract

The utility model provides a to butterfly check valve belongs to valve equipment technical field. The pair of butterfly check valves includes a valve body, a connection assembly, a support assembly, a plug assembly, and a fixing assembly. The connecting assembly comprises a first hollow pipe and a first sealing ring, the first hollow pipe is integrally formed on two sides of the valve body, and a first groove and a second groove are formed in the inner side of the first hollow pipe respectively. The grafting subassembly includes third hollow tube, second annular flange and second sealing washer, the third hollow tube with the surface sliding connection of third recess, second annular flange integrated into one piece in the tip of third hollow tube, the second sealing washer sets up the surface of fourth recess, the surface of third hollow tube with the inboard threaded connection of first recess, the utility model discloses can guarantee the leakproofness in the installation, sealing device is relatively independent simultaneously, changes fairly simply.

Description

Butterfly check valve

Technical Field

The utility model relates to a valve field particularly, relates to a to butterfly check valve.

Background

The valve is a control part in a pipeline fluid conveying system, is used for changing the section of a passage and the flowing direction of a medium, and has the functions of diversion, cut-off, throttling, check, flow splitting, overflow pressure relief and the like. Valves used for fluid control range from the simplest shut-off valves to the various valves used in extremely complex autonomous systems, ranging in variety and specification from the very tiny instrument valves up to industrial pipeline valves with nominal diameters of up to 10 m.

At present, when the butterfly-shaped check valve is installed, a sealing device is arranged in the check valve, the butterfly-shaped check valve cannot be used independently for sealing, and the butterfly-shaped check valve is relatively complex to replace.

SUMMERY OF THE UTILITY MODEL

In order to compensate the above deficiency, the utility model provides a to butterfly check valve, it is not enough independent to aim at improving check valve sealing device, changes more complicated problem.

The utility model discloses a realize like this:

a butterfly check valve comprises a valve body, a connecting assembly, a supporting assembly, a plug assembly and a fixing assembly.

The connecting assembly comprises a first hollow pipe and a first sealing ring, the first hollow pipe is integrally formed on two sides of the valve body, a first groove and a second groove are respectively formed in the inner side of the first hollow pipe, the second groove is located on the inner surface of the first groove, and the first sealing ring is arranged on the surface of the second groove;

the supporting assembly comprises a second hollow pipe, and third grooves are formed in the outer surfaces of two sides of the second hollow pipe;

the plug-in assembly comprises a third hollow pipe, a second annular flange and a second sealing ring, the third hollow pipe is connected with the surface of the third groove in a sliding mode, the second annular flange is integrally formed at the end of the third hollow pipe, a fourth groove is formed in the third hollow pipe, the second sealing ring is arranged on the surface of the fourth groove, and the surface of the third hollow pipe is in threaded connection with the inner side of the first groove;

the securing assembly is located between the first hollow tube and the second hollow tube.

In an embodiment of the present invention, the fixing assembly includes a first annular plate and a second annular plate, and the first annular plate and the second annular plate are fixedly connected by a bolt.

In an embodiment of the present invention, the bolts are provided with at least four groups, and the bolts are circumferentially and uniformly distributed along the first annular plate and the second annular plate.

In an embodiment of the present invention, a first annular flange is fixed on a surface of the third groove, and a fifth groove matched with the first annular flange is disposed on a surface of the fourth groove.

In an embodiment of the present invention, a matching thread structure is provided on the inner side of the first groove and the outer side of the third hollow tube, respectively.

In an embodiment of the present invention, at least two sets of the second grooves are provided, and the second grooves are equidistantly distributed on the inner wall of the first groove.

In an embodiment of the present invention, the first groove and the second annular flange are disposed in a matching manner.

In an embodiment of the present invention, a chamfer is disposed on a side of the third hollow tube, and the chamfer is along the third hollow tube and is circumferentially and uniformly distributed.

In an embodiment of the present invention, the third groove and the fourth groove have the same inner diameter, and the third groove is inboard attached to the outer side of the fourth groove.

In an embodiment of the present invention, the outer diameter of the first groove and the outer diameter of the third hollow tube are arranged in a matching manner.

The utility model has the advantages that: the utility model discloses a to butterfly check valve that above-mentioned design obtained, during the installation, in the inboard first recess of first hollow tube of third hollow tube spiro union, the second ring flange of third hollow tube tip will take place the extrusion with the first sealing washer on the inboard second recess surface of first hollow tube after the spiro union installation like this, thereby guarantee the leakproofness between valve body and the third hollow tube, the second sealing washer of the inboard fourth recess surface of third hollow tube will take place the extrusion with the third recess in the second hollow tube outside simultaneously, thereby guarantee the leakproofness between third hollow tube and the external connection pipe, can guarantee the leakproofness like this in the installation of valve body, sealing device is relatively independent simultaneously, it is simpler to change.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view illustrating a front view cross-section of a butterfly check valve according to an embodiment of the present invention;

fig. 2 is a schematic front view of a butterfly check valve according to an embodiment of the present invention;

FIG. 3 is an enlarged view of FIG. 1 at A;

FIG. 4 is an enlarged view of FIG. 1 at B;

fig. 5 is a schematic side view of the third hollow tube of the butterfly check valve according to the embodiment of the present invention.

In the figure: 100-a valve body; 200-a connection assembly; 210-a first hollow tube; 220-a first groove; 230-a second groove; 240-first seal ring; 300-a support assembly; 310-a second hollow tube; 320-a third groove; 340-a first annular flange; 400-a plug-in assembly; 410-a third hollow tube; 411-chamfering; 420-a second annular flange; 430-fourth groove; 440-a fifth groove; 450-a second sealing ring; 500-a stationary assembly; 510-a first annular plate; 520-a second annular plate; 530-bolt.

Detailed Description

To make the technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the terms "center" - "longitudinal" - "lateral" - "length" - "width" - "thickness" - "upper" - "lower" - "front" - "rear" - "left" - "right" - "vertical" - "horizontal" - "top" - "bottom" - "inner" - "outer" - "clockwise" - "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation-be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first" - "second" 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" 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 specifically limited otherwise.

In the present invention, unless otherwise specifically stated or limited, the terms "mounted" - "connected" - "connected" - "fixed" and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, a first feature "on," "above," and "over" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature "under" and "beneath" a second feature includes the first feature being directly under and obliquely under the second feature, or simply means that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1-5, the present invention provides a technical solution: a pair of butterfly check valves, including valve body 100, coupling assembling 200, supporting component 300, plug-in components 400 and fixed subassembly 500, coupling assembling 200 is located the both sides of valve body 100, supporting component 300 and plug-in components 400 are located the both sides of coupling assembling 200 respectively, can install valve body 100 in the pipeline through the mode of rotating like this, fixed subassembly 500 is located between coupling assembling 200 and the plug-in components 400, be convenient for like this further fix coupling assembling 200 and plug-in components 400, make the junction of valve body 100 more firm convenient.

Referring to fig. 1 and 3, the connecting assembly 200 includes a first hollow tube 210 and a first sealing ring 240, the first hollow tube 210 is integrally formed at two sides of the valve body 100, the inner side of the first hollow tube 210 is respectively provided with a first groove 220 and a second groove 230, the second groove 230 is located at the inner surface of the first groove 220, the first sealing ring 240 is disposed at the surface of the second groove 230, at least two groups of the second grooves 230 are disposed, the second grooves 230 are equidistantly distributed on the inner wall of the first groove 220, the first groove 220 and the second annular flange 420 are disposed in a matching manner, so that when the third hollow tube 410 is screwed to the inner wall of the first hollow tube 210 in a screwing manner, the second annular flange 420 and the first sealing ring 240 on the surface of the second groove 230 perform double-layer extrusion, thereby ensuring the sealing performance of the structure.

Referring to fig. 1, the supporting assembly 300 includes a second hollow tube 310, wherein third grooves 320 are formed on the outer surfaces of the two sides of the second hollow tube 310, a first annular flange 340 is fixed on the surface of the third groove 320, and a fifth groove 440 matched with the first annular flange 340 is formed on the surface of the fourth groove 430, so that when the third hollow tube 410 is screwed to the inner wall of the connecting pipe, the first annular flange 340 and a second sealing ring 450 inside the fifth groove 440 are pressed, thereby ensuring the sealing performance of the connection.

Referring to fig. 1, 4 and 5, the plug assembly 400 includes a third hollow tube 410, a second annular flange 420 and a second sealing ring 450, the third hollow tube 410 is slidably connected to the surface of the third groove 320, the second annular flange 420 is integrally formed at the end of the third hollow tube 410, a fourth groove 430 is formed in the third hollow tube 410, the second sealing ring 450 is disposed on the surface of the fourth groove 430, the surface of the third hollow tube 410 is in threaded connection with the inner side of the first groove 220, and the inner side of the first groove 220 and the outer side of the third hollow tube 410 are respectively provided with a matching threaded structure, so that the valve body 100 can be conveniently mounted on a pipeline in a threaded manner, and the mounting is more convenient.

Secondly, the internal diameter of third recess 320 and fourth recess 430 is the same setting, third recess 320 inboard is hugged closely with the outside of fourth recess 430, can have certain limiting displacement like this, be convenient for make a round trip to slide and stretch out or retract, chamfer 411 has been seted up to one side slope of third hollow tube 410, chamfer 411 is circumference evenly distributed along third hollow tube 410, can conveniently rotate third hollow tube 410 through outside spanner like this, conveniently make third hollow tube 410 spiro union in first recess 220, the external diameter of first recess 220 is the phase-match setting with the external diameter of third hollow tube 410, make things convenient for third hollow tube 410 to carry out the spiro union installation like this.

Referring to fig. 1 and 2, the fixing assembly 500 is located between the first hollow tube 210 and the second hollow tube 310, the fixing assembly 500 includes a first annular plate 510 and a second annular plate 520, the first annular plate 510 and the second annular plate 520 are fixedly connected by bolts 530, at least four sets of bolts 530 are provided, and the bolts 530 are uniformly distributed along the circumferential direction of the first annular plate 510 and the second annular plate 520, so that the first hollow tube 210 and the second hollow tube 310 can be conveniently fixed from different directions, and the connection between the valve body 100 and the second hollow tube 310 is tighter and firmer.

Specifically, this kind of theory of operation to butterfly check valve: when the valve is installed, the third hollow tube 410 is rotatably screwed into the first hollow tube 210 by a wrench being engaged with the chamfer 411 on the outer wall of the third hollow tube 410, so that after the valve is screwed, the second annular flange 420 at the end of the third hollow tube 410 is pressed against the first sealing ring 240 on the surface of the second groove 230 inside the first hollow tube 210, thereby ensuring the sealing between the valve body 100 and the third hollow tube 410, and then the third hollow tube 410 is screwed against the end of the external connection tube, so that the second sealing ring 450 on the surface of the fourth groove 430 inside the third hollow tube 410 is pressed against the first annular flange 340 on the surface of the third groove 320 outside the second hollow tube 310, thereby ensuring the sealing between the third hollow tube 410 and the external connection tube, and thus the first hollow tube 210 and the second hollow tube 310 are fixed by the bolt 530 penetrating through the first annular plate 510 and the second annular plate 520, the whole body is firmer, so that the sealing performance can be ensured in the installation process of the valve body 100, and meanwhile, the sealing device is relatively independent and is relatively simple to replace.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pair of butterfly check valves, which is characterized by comprising

A valve body (100);

the connecting assembly (200) comprises a first hollow pipe (210) and a first sealing ring (240), the first hollow pipe (210) is integrally formed on two sides of the valve body (100), a first groove (220) and a second groove (230) are respectively formed in the inner side of the first hollow pipe (210), the second groove (230) is located on the inner surface of the first groove (220), and the first sealing ring (240) is arranged on the surface of the second groove (230);

the supporting component (300) comprises a second hollow pipe (310), and third grooves (320) are formed in the outer surfaces of two sides of the second hollow pipe (310);

the plug assembly (400), the plug assembly (400) comprises a third hollow pipe (410), a second annular flange (420) and a second sealing ring (450), the third hollow pipe (410) is connected with the surface of the third groove (320) in a sliding mode, the second annular flange (420) is integrally formed at the end of the third hollow pipe (410), a fourth groove (430) is formed in the third hollow pipe (410), the second sealing ring (450) is arranged on the surface of the fourth groove (430), and the surface of the third hollow pipe (410) is in threaded connection with the inner side of the first groove (220);

a securing assembly (500), the securing assembly (500) located between the first hollow tube (210) and the second hollow tube (310).

2. A pair of butterfly check valves as claimed in claim 1, wherein said fixing assembly (500) comprises a first annular plate (510) and a second annular plate (520), said first annular plate (510) and said second annular plate (520) being fixedly connected by bolts (530).

3. A pair of butterfly check valves according to claim 2, characterized in that said bolts (530) are provided in at least four sets, and that bolts (530) are evenly distributed circumferentially along said first annular plate (510) and said second annular plate (520).

4. A pair of butterfly check valves according to claim 1, characterized in that a first annular flange (340) is fixed to the surface of the third groove (320), and a fifth groove (440) matching the first annular flange (340) is opened to the surface of the fourth groove (430).

5. The pair of butterfly check valves as claimed in claim 1, wherein the inner side of the first groove (220) and the outer side of the third hollow tube (410) are respectively provided with a matching screw structure.

6. A pair of butterfly check valves as claimed in claim 1, characterized in that said second grooves (230) are provided in at least two groups, said second grooves (230) being equally spaced on the inner wall of said first groove (220).

7. A pair of butterfly check valves as claimed in claim 1, wherein said first groove (220) and said second annular flange (420) are matingly disposed.

8. The pair of butterfly check valves as claimed in claim 1, wherein a chamfer (411) is obliquely formed at one side of the third hollow tube (410), and the chamfers (411) are uniformly distributed along the third hollow tube (410) in a circumferential direction.

9. A pair of butterfly check valves according to claim 1, wherein the inner diameters of the third groove (320) and the fourth groove (430) are the same, and the inner side of the third groove (320) is closely attached to the outer side of the fourth groove (430).

10. A pair of butterfly check valves according to claim 1, characterized in that the outer diameter of the first groove (220) and the outer diameter of the third hollow tube (410) are arranged to match.