CN223152823U

CN223152823U - A gate valve

Info

Publication number: CN223152823U
Application number: CN202422607240.XU
Authority: CN
Inventors: 郭卫强; 王成龙; 诸亚明
Original assignee: Kunshan Kinglai Hygienic Materials Co Ltd
Current assignee: Kunshan Kinglai Hygienic Materials Co Ltd
Priority date: 2024-10-28
Filing date: 2024-10-28
Publication date: 2025-07-25
Anticipated expiration: 2034-10-28

Abstract

The utility model belongs to the technical field of valves, and discloses a gate valve which comprises a valve body, a gate plate, a driving piece and a transmission assembly. The valve body includes a valve seat. The flashboard is arranged in the valve body in a sliding way and is provided with a closing state for plugging the valve seat and an opening state for opening the valve seat. The driving piece is arranged on the valve body and is in transmission connection with the flashboard through the transmission component so as to drive the flashboard to slide and enable the flashboard to switch between a closed state and an open state. The driving piece can push the flashboard through the transmission component when the flashboard is in a closed state so as to tightly prop the flashboard on the valve seat. The driving piece tightly supports the flashboard on the valve seat through the transmission component, so that a gap exists between the flashboard and the valve seat when the flashboard is in a closed state, that is, the problem of sealing failure can be avoided, and further the service life of the gate valve can be prolonged.

Description

Gate valve

Technical Field

The utility model relates to the technical field of valves, in particular to a gate valve.

Background

The seal failure refers to a situation in which the clearance between the valve plate and the valve seat in the closed state increases, resulting in a decrease in sealing performance. Seal failure is a critical factor affecting the service life of the gate valve.

But traditional gate valve is opened and close the time valve plate and disk seat can take place wearing and tearing to lead to traditional gate valve to use after a period, can all lead to the clearance increase between valve plate and the disk seat under the closed condition because of wearing and tearing, that is, traditional gate valve uses after a period and all can appear sealing failure, and then influences life.

Therefore, the above-described problems are to be solved.

Disclosure of utility model

The utility model aims to provide a gate valve so as to prolong the service life.

To achieve the purpose, the utility model adopts the following technical scheme:

A gate valve, comprising:

A valve body including a valve seat;

The flashboard is arranged in the valve body in a sliding way and is provided with a closing state for blocking the valve seat and an opening state for opening the valve seat;

The driving piece is arranged on the valve body and is in transmission connection with the flashboard through the transmission component so as to drive the flashboard to slide and enable the flashboard to be switched between the closed state and the open state;

The driving piece can push the flashboard through the transmission assembly when the flashboard is in a closed state so as to tightly press the flashboard on the valve seat.

Preferably, the transmission assembly includes:

the valve rod is arranged in the valve body in a sliding way and is connected with the moving part of the driving piece;

The flashboard is connected to the valve rod through the elastic connecting piece, and after the flashboard is in the closed state, the driving piece continuously drives the valve rod to slide, and the elastic connecting piece abuts against the valve body and deforms;

The pushing piece is arranged on the valve rod and can continuously push against the flashboard when the elastic connecting piece deforms.

Preferably, the gate valve further comprises a back plate, the back plate is connected to the valve rod through the elastic connecting piece, the back plate and the gate plate are respectively located on two sides of the valve rod, and the back plate can be in sealing fit with the other side of the valve seat.

Preferably, the elastic connecting piece is a spring piece.

Preferably, the elastic sheet comprises a first connecting part and a second connecting part which are symmetrically arranged about the valve rod, and two opposite sides of the flashboard are respectively connected with the first connecting part and the second connecting part.

Preferably, two opposite sides of the back plate are respectively connected with the first connecting part and the second connecting part.

Preferably, the pushing member is a ball rotatably disposed on the valve rod, the shutter is provided with a guide groove gradually shrinking along the closing direction, and the ball is disposed in the guide groove.

Preferably, a first sealing ring is arranged on one side of the flashboard, which faces away from the backboard.

Preferably, a second sealing ring is arranged on one side of the back plate, which faces away from the flashboard.

Preferably, the driving member is a cylinder.

The utility model has the beneficial effects that:

The driving piece tightly supports the flashboard on the valve seat through the transmission component, so that a gap exists between the flashboard and the valve seat when the flashboard is in a closed state, that is, the problem of sealing failure can be avoided, and further the service life of the gate valve can be prolonged.

Drawings

FIG. 1 is a schematic view of a gate valve according to the present utility model;

FIG. 2 is a schematic diagram of the structure of the driving assembly, shutter and back plate provided by the utility model;

fig. 3 is a schematic structural view of the shutter provided by the present utility model.

In the figure:

1. Valve body, 11, valve seat, 2, flashboard, 21, first sealing ring, 3, driving piece, 4, transmission component, 41, valve rod, 42, elastic connecting piece, 421, first connecting part, 422, second connecting part, 43, pushing piece, 5, back plate.

Detailed Description

Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings.

In the present disclosure, the terms "comprises," "comprising," "has," "having," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the present application, the term "and/or" is an association relationship describing an association object, meaning that three relationships may exist. For example, a centrifugal scroll magnetic pump and/or a centrifugal scroll magnetic pump may mean that there are three cases of a centrifugal scroll magnetic pump alone, a centrifugal scroll magnetic pump and a centrifugal scroll magnetic pump together, and a centrifugal scroll magnetic pump alone. In the present application, the character "/" generally indicates that the front and rear related objects are in an "and/or" relationship.

In the present application, the terms "connected," "coupled," and "mounted" may be directly connected, coupled, or mounted, or indirectly connected, coupled, or mounted. By way of example, two parts or components are connected together without intermediate members, and by indirect connection is meant that the two parts or components are respectively connected to at least one intermediate member, through which the two parts or components are connected. Further, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings, and may include electrical connections or couplings.

In the present application, one of ordinary skill in the art will understand that relative terms (e.g., "about," "approximately," "substantially," etc.) used in connection with quantities or conditions are intended to encompass the values and have the meanings indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a particular value, the tolerance associated with a particular value resulting from manufacture, assembly, use, and the like. Such terms should also be considered to disclose a range defined by the absolute values of the two endpoints. Relative terms may refer to the addition or subtraction of a percentage (e.g., 1%,5%,10% or more) of the indicated value. Numerical values, not employing relative terms, should also be construed as having specific values of tolerance. Further, "substantially" when referring to relative angular positional relationships (e.g., substantially parallel, substantially perpendicular) may refer to adding or subtracting a degree (e.g., 1 degree, 5 degrees, 10 degrees, or more) from the indicated angle.

In the present application, those of ordinary skill in the art will appreciate that the functions performed by a component may be performed by a component, a plurality of components, a part, or a plurality of parts. Also, the functions performed by the elements may be performed by one element, by an assembly, or by a combination of elements.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", and the like are described in terms of orientation and positional relationship shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements. It should also be understood that the terms upper, lower, left, right, front, back, etc. are not only intended to represent positive orientations, but also to be construed as lateral orientations. For example, the lower side may include a right lower side, a left lower side, a right lower side, a front lower side, a rear lower side, and the like.

Referring to fig. 1 to 3, the present embodiment provides a gate valve, which includes a valve body 1, a gate plate 2, a driving member 3, and a transmission assembly 4. The valve body 1 comprises a valve seat 11. The shutter 2 is slidably provided in the valve body 1, and has a closed state for closing the valve seat 11 and an open state for opening the valve seat 11. The driving piece 3 is arranged on the valve body 1, and the driving piece 3 is in transmission connection with the flashboard 2 through the transmission component 4 so as to drive the flashboard 2 to slide and switch between a closed state and an open state. The driving member 3 is capable of pushing the shutter 2 through the transmission assembly 4 to abut the shutter 2 against the valve seat 11 when the shutter 2 is in the closed state.

So set up, driving piece 3 tightly supports flashboard 2 on disk seat 11 through drive assembly 4 to can avoid flashboard 2 when being in the closed state and have the clearance between disk seat 11, that is, can avoid the problem of sealed inefficacy, and then help prolonging the life of gate valve.

The transmission assembly 4 comprises a valve stem 41, an elastic connection 42 and a push-on 43. The valve rod 41 is slidably disposed in the valve body 1 and connected to the moving part of the driver 3. The flashboard 2 is connected to the valve rod 41 through the elastic connecting piece 42, when the flashboard 2 is in a closed state, the driving piece 3 continuously drives the valve rod 41 to slide, and the elastic connecting piece 42 abuts against the valve body 1 and deforms. The pushing member 43 is disposed on the valve rod 41, and the pushing member 43 can continuously push against the shutter 2 when the elastic connection member 42 is deformed.

It will be appreciated that by the abutment 43 abutting the shutter 2 against the valve seat 11, the resilient connection 42 is deformed and is able to provide a certain cushioning formation. It will also be appreciated that even when the mating position between the shutter 2 and the valve seat 11 changes due to wear, the maximum sliding distance of the valve stem 41 is limited by the deformation range of the elastic connection member 42, and the deformation range of the elastic connection member 42 is large enough to compensate for the increased distance between the shutter 2 and the valve seat 11.

Generally, the valve seat 11 includes an inlet side and an outlet side, and the shutter plate 2 described above is adapted to cooperate with the inlet side of the valve seat 11. In order to prevent the medium from flowing back into the valve seat 11, the medium flows in from the outlet side and then impacts the shutter 2, thereby affecting the sealing property when the shutter 2 is in the closed state. In this embodiment, the gate valve further includes a back plate 5, the back plate 5 is connected to the valve rod 41 through an elastic connection member 42, the back plate 5 and the gate plate 2 are respectively located at two sides of the valve rod 41, and the back plate 5 can be in sealing fit with the other side of the valve seat 11. Specifically, the back plate 5 is configured to cooperate with the outlet side of the valve seat 11, so that the influence of the reverse flow of the receiving medium on the sealing performance of the gate valve can be avoided.

In this embodiment, the elastic connecting piece 42 is an elastic piece, the elastic piece includes a first connecting portion 421 and a second connecting portion 422 symmetrically arranged about the valve rod 41, and opposite sides of the gate plate 2 are respectively connected with the first connecting portion 421 and the second connecting portion 422, so that opposite sides of the gate plate 2 can be synchronously driven to be close to the valve seat 11, the situation that one side of the gate plate 2 is tilted can be avoided, and the gate plate 2 can be accurately in sealing fit with the valve seat 11.

Correspondingly, opposite sides of the back plate 5 are respectively connected with the first connection portion 421 and the second connection portion 422. By the arrangement, two opposite sides of the backboard 5 can be synchronously driven to be close to the valve seat 11, the situation that one side of the backboard 5 is tilted can be avoided, and then the backboard 5 can be accurately matched with the valve seat 11 in a sealing mode. It should be noted that, since the movement directions of the back plate 5 and the gate plate 2 are opposite, the first connecting portion 421 is correspondingly provided with two connection positions with opposite movement directions to correspondingly connect the gate plate 2 and the back plate 5, and of course, the second connecting portion 422 is correspondingly provided with two connection positions with opposite movement directions to correspondingly connect the gate plate 2 and the back plate 5. It should be noted that, the specific structure of the spring plate is designed according to the actual application scenario, and will not be described in detail. It should be further noted that, in this embodiment, the gate 2 and the back plate 5 are both connected to the elastic sheet by adopting a bolt structure, specifically, the gate 2 and the back plate 5 are integrally formed with studs, and the studs pass through the elastic sheet and are screwed with nuts.

The pushing member 43 is a ball rotatably provided on the valve rod 41, and the shutter 2 is provided with a guide groove gradually narrowed in the closing direction thereof, and the ball is located in the guide groove. When the shutter 2 is closed, the valve rod 41 continuously pushes the elastic connecting piece 42 to deform, the balls slide along the guide groove, and the balls gradually protrude out of the guide groove due to the gradual shrinkage of the guide groove, so that the shutter 2 is pushed to move, and the shutter 2 is further pushed to be connected to the valve seat 11.

So set up, can strut flashboard 2 through the ball to make flashboard 2 support to valve seat 11 on, simple structure, the motion is reliable. It should be noted that, the number of the balls may be selected according to the actual application scenario, the number and the positions of the guide grooves correspond to the number and the positions of the balls, and in this embodiment, two balls are provided, and two guide grooves are correspondingly provided. It should be noted that the driving structure of the back plate 5 is identical to the structure formed by the balls and the guide grooves, so that the description is omitted.

To further improve the tightness of the gate valve, the side of the gate plate 2 facing away from the back plate 5 is provided with a first sealing ring 21. Further, a second sealing ring is arranged on the side of the back plate 5 away from the flashboard 2. The first seal ring 21 and the second seal ring are conventional O-rings.

In the embodiment, the driving member 3 is an air cylinder, and the air cylinder has the advantages of compact structure, high response speed, high reliability and the like. In other embodiments, the driving member 3 may be any linear driving structure in the prior art, such as a linear module, an electric cylinder, etc.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A gate valve, characterized by comprising:

A valve body (1), including a valve seat (11);

A gate plate (2) is slidably disposed in the valve body (1) and has a closed state for blocking the valve seat (11) and an open state for opening the valve seat (11);

A driving member (3) and a transmission assembly (4), wherein the driving member (3) is arranged on the valve body (1), and the driving member (3) is in transmission connection with the gate plate (2) through the transmission assembly (4) so as to drive the gate plate (2) to slide and switch between the closed state and the open state;

The driving member (3) can push the gate plate (2) through the transmission assembly (4) when the gate plate (2) is in a closed state, so as to tightly press the gate plate (2) against the valve seat (11).

2. A gate valve according to claim 1, characterized in that the transmission assembly (4) comprises:

A valve stem (41) is slidably disposed in the valve body (1) and is connected to the moving part of the driving member (3);

an elastic connecting member (42), wherein the gate plate (2) is connected to the valve stem (41) via the elastic connecting member (42); after the gate plate (2) is in the closed state, the driving member (3) continues to drive the valve stem (41) to slide, and the elastic connecting member (42) abuts against the valve body (1) and deforms;

A push member (43) is arranged on the valve stem (41), and the push member (43) can continuously push against the gate plate (2) when the elastic connecting member (42) is deformed.

3. A gate valve according to claim 2, characterized in that the gate valve also includes a back plate (5), the back plate (5) is connected to the valve stem (41) through the elastic connecting piece (42), the back plate (5) and the gate plate (2) are respectively located on both sides of the valve stem (41), and the back plate (5) can be sealed with the other side of the valve seat (11).

4. A gate valve according to claim 3, characterized in that the elastic connecting member (42) is a spring.

5. A gate valve according to claim 4, characterized in that the spring piece includes a first connecting portion (421) and a second connecting portion (422) symmetrically arranged about the valve stem (41), and the opposite sides of the gate plate (2) are respectively connected to the first connecting portion (421) and the second connecting portion (422).

6. A gate valve according to claim 5, characterized in that two opposite sides of the back plate (5) are respectively connected to the first connecting portion (421) and the second connecting portion (422).

7. A gate valve according to claim 3, characterized in that the push member (43) is a ball rotatably arranged on the valve stem (41), and the gate plate (2) is provided with a guide groove which gradually shrinks along its closing direction, and the ball is located in the guide groove.

8. A gate valve according to claim 3, characterized in that a first sealing ring (21) is provided on the side of the gate plate (2) facing away from the back plate (5).

9. A gate valve according to claim 3, characterized in that a second sealing ring is provided on the side of the back plate (5) facing away from the gate plate (2).

10. A gate valve according to claim 1, characterized in that the driving member (3) is a cylinder.