CN217927188U

CN217927188U - Butterfly valve body sealing mechanism

Info

Publication number: CN217927188U
Application number: CN202221480259.7U
Authority: CN
Inventors: 李宝生; 刘启伟; 田秀龙; 马德福; 李建设
Original assignee: Henan Kaivalve Co ltd
Current assignee: Henan Kaivalve Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-11-29
Anticipated expiration: 2032-06-14

Abstract

The utility model discloses a butterfly valve body sealing mechanism, which comprises a valve body, the valve body rotates and is connected with the valve rod, the one end that the valve body is close to the valve rod is equipped with the sealing ring, the other end that the valve body is close to the valve rod passes through the base and the valve rod rotates the connection, the valve rod can be dismantled and be connected with the valve plate, the equal sliding connection in valve plate both sides has the limiting plate, the limiting plate passes through the disk seat and the valve body cooperation is connected. The utility model discloses a set up the limiting plate, the valve during operation replaces valve plate and disk seat through the limiting plate to carry out sealed cooperation, alleviates the damage of valve body sealing washer, solves the valve simultaneously and leads to the situation of sealing washer damaged to take place because of the vibration in long-term opening and shutting action, effectively promotes the life and the sealed effect of butterfly valve; set up sealed the pad through the both sides at the limiting plate, when limiting plate and disk seat accomplish the cooperation, sealed pad is supplementary to be sealed the limiting plate, further promotes the sealed effect in the valve plate working process.

Description

Butterfly valve body sealing mechanism

Technical Field

The utility model belongs to the technical field of the butterfly valve is sealed, especially, relate to a butterfly valve body sealing mechanism.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. The quality and the service life of the butterfly valve are directly influenced by the sealing of the butterfly valve, and along with the increasing sealing requirement of the market on the butterfly valve, the problems of a sealing mechanism of a butterfly valve body in the practical application process are urgently needed to be perfected.

At present, a sealing mechanism of a butterfly valve mainly comprises a valve body sealing surface and a matched valve body sealing ring arranged on the valve body sealing surface, but the sealing ring is easy to cause the reduction of the sealing effect under the action of long-term medium impact, and meanwhile, the situation that the sealing ring is damaged due to vibration also exists in the long-term opening and closing action of the valve, so that the service life and the sealing effect of the butterfly valve are seriously influenced.

Therefore, a butterfly valve body sealing mechanism is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a butterfly valve body sealing mechanism, the device can produce the sealed effect of substitution through the limiting plate to the valve plate, promote butterfly valve's life to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a butterfly valve body sealing mechanism, includes the valve body, the valve body rotates and is connected with the valve rod, the one end that the valve body is close to the valve rod is equipped with the sealing ring, the other end that the valve body is close to the valve rod passes through the base and the valve rod rotates the connection, the valve rod can be dismantled and be connected with the valve plate, the equal sliding connection in valve plate both sides has the limiting plate, the limiting plate passes through disk seat and valve body cooperation connection.

Furthermore, the valve plate is provided with a connecting plate, and the valve rod is fixedly connected with the connecting plate through a shaft pin.

Further, the valve plate symmetry is equipped with the arc wall, the limiting plate passes through spring assembly and arc wall sliding connection.

Furthermore, the limiting plate is equipped with the multiunit arch in the one end of keeping away from the spring group, the disk seat is equipped with the recess, arch and recess one-to-one are connected.

Furthermore, one side of the valve seat close to the groove is provided with a buffer block, and the buffer block is connected with the protrusion in a matched mode.

Furthermore, the limiting plate is close to the bilateral symmetry of buffer block and is equipped with sealed the pad, sealed pad sets up through step and valve plate cooperation.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up the limiting plate, the valve during operation, when the valve plate rotated the valve body position through sliding connection's limiting plate replace valve plate and disk seat to carry out sealed cooperation, avoid the sealing washer direct contact of valve plate and valve body to cause the damage of sealing washer, solve the valve simultaneously and lead to the situation emergence that the sealing washer is damaged because of the vibration in long-term opening and shutting action, effectively promote the life and the sealed effect of butterfly valve;

2. the utility model discloses a set up sealed the pad in the both sides of limiting plate, when limiting plate and disk seat accomplish the cooperation, sealed pad is supplementary to be sealed to the limiting plate, further promotes the sealed effect in the valve plate working process.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic structural view of the middle valve plate of the present invention.

In the figure: 1. a valve body; 2. a valve stem; 21. a shaft pin; 3. a seal ring; 4. a base; 5. a valve plate; 51. a connecting plate; 52. an arc-shaped slot; 53. a step; 6. a limiting plate; 61. a spring set; 62. a protrusion; 7. a valve seat; 71. a groove; 72. a buffer block; 8. and a gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that 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 indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-3, a butterfly valve body 1 sealing mechanism comprises a valve body 1, wherein the valve body 1 is rotatably connected with a valve rod 2, one end of the valve body 1, which is close to the valve rod 2, is provided with a sealing ring 3, the other end of the valve body 1, which is close to the valve rod 2, is rotatably connected with the valve rod 2 through a base 4, it needs to be explained that the sealing ring 3 is made of polytetrafluoroethylene, graphite and the like and is used for ensuring the sealing performance of the valve rod 2 in the working process, and the base 4 is of a split structure and is convenient to connect with the valve rod 2.

Referring to fig. 1 and 3, the valve plate 5 is detachably connected to the valve rod 2, and it should be noted that the valve plate 5 is provided with a connecting plate 51, and after the valve rod 2 passes through the connecting plate 51, the shaft pin 21 penetrates through the pin holes of the valve rod 2 and the connecting plate 51, so as to realize the fixed connection between the valve rod 2 and the valve plate 5.

Referring to fig. 3, the valve plate 5 is connected with the limiting plates 6 in a sliding manner on two sides, it should be noted that the valve plate 5 is symmetrically provided with the arc-shaped grooves 52, and the limiting plates 6 are connected with the arc-shaped grooves 52 in a sliding manner through the spring sets 61, so that the limiting plates 6 are in a stretching state in a normal state.

Referring to fig. 2, limiting plate 6 is connected through the cooperation of disk seat 7 and valve body 1, specific cooperation connected mode: one end of the limiting plate 6, which is far away from the spring group 61, is provided with a plurality of groups of protrusions 62, the valve seat 7 is provided with a groove 71, and the protrusions 62 and the groove 71 are connected in a matched mode, so that the valve plate 5 can realize sealing work through the limiting plate 6.

Specifically, one side that valve seat 7 is close to recess 71 is equipped with buffer block 72, buffer block 72 and protruding 62 cooperation are connected, wherein buffer block 72 adopts the rubber material, buffer block 72 can carry out certain buffering work to limiting plate 6 and recess 71 cooperation in-process, avoid producing the rigidity contact between limiting plate 6 and the valve seat 7, limiting plate 6 is close to the bilateral symmetry of buffer block 72 and is equipped with sealed pad 8, sealed pad 8 sets up through step 53 and the cooperation of valve plate 5 for promote the leakproofness of limiting plate 6 at the block in-process.

Now, the operation principle of the present invention is described as follows:

the utility model discloses in, the staff is in accomplishing

valve plate

5 and 1 assembly of valve body after, connect valve rod 2 and valve plate 5's connecting plate 51 through pivot 21, valve during operation, valve plate 5 rotates with valve body 1 under the drive of valve rod 2, limiting plate 6 and disk seat 7 through sliding connection cooperate when valve plate 5 rotates valve body 1 position, carry out certain buffering through buffer block 72 when the protruding 62 of limiting plate 6 and the recess 71 of disk seat 7 cooperate, when limiting plate 6 and disk seat 7 accomplish the cooperation, sealed pad 8 is supplementary to be sealed to limiting plate 6, promote the sealed effect of valve plate 5 work.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a butterfly valve body sealing mechanism, includes valve body (1), its characterized in that, valve body (1) is rotated and is connected with valve rod (2), the one end that valve body (1) is close to valve rod (2) is equipped with sealing ring (3), the other end that valve body (1) is close to valve rod (2) passes through base (4) and valve rod (2) rotate to be connected, valve rod (2) can be dismantled and be connected with valve plate (5), the equal sliding connection in valve plate (5) both sides has limiting plate (6), limiting plate (6) are connected through disk seat (7) and valve body (1) cooperation.

2. A butterfly valve body sealing mechanism according to claim 1, characterized in that the valve plate (5) is provided with a connecting plate (51), and the valve rod (2) is fixedly connected with the connecting plate (51) through a shaft pin (21).

3. The butterfly valve body sealing mechanism according to claim 1, wherein the valve plate (5) is symmetrically provided with an arc-shaped groove (52), and the limiting plate (6) is slidably connected with the arc-shaped groove (52) through a spring set (61).

4. The butterfly valve body sealing mechanism according to claim 3, wherein the end of the limiting plate (6) away from the spring set (61) is provided with a plurality of sets of protrusions (62), the valve seat (7) is provided with grooves (71), and the protrusions (62) and the grooves (71) are connected in a one-to-one correspondence manner.

5. A butterfly valve body sealing mechanism according to claim 4, characterized in that a buffer block (72) is arranged on the side of the valve seat (7) close to the groove (71), and the buffer block (72) is in fit connection with the protrusion (62).

6. The butterfly valve body sealing mechanism according to claim 5, characterized in that the two sides of the limiting plate (6) close to the buffer block (72) are symmetrically provided with sealing gaskets (8), and the sealing gaskets (8) are matched with the valve plate (5) through the step (53).