CN214466209U

CN214466209U - Gate valve

Info

Publication number: CN214466209U
Application number: CN202120428750.4U
Authority: CN
Inventors: 郭卫强; 朱东峰; 秦志强
Original assignee: Kunshan Kinglai Hygienic Materials Co Ltd
Current assignee: Kunshan Kinglai Hygienic Materials Co Ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-10-22
Anticipated expiration: 2031-02-26

Abstract

The utility model belongs to the technical field of valves, and discloses a gate valve, which comprises a valve body, a valve plate component and a driving piece, wherein the valve body is provided with a valve cavity, two sides of the valve body are coaxially provided with two diversion holes in a penetrating way, the valve plate component is arranged in the valve cavity in a sliding way, the driving piece is arranged at one end of the valve body, the movable end of the driving piece penetrates through the valve body, the driving piece is configured to drive the valve plate component to slide so as to block or conduct the two diversion holes, the valve plate component comprises a first valve plate and a second valve plate, when the first valve plate moves to just face the diversion holes, the first valve plate is abutted against the valve body, the second valve plate is parallel to the first valve plate, the second valve plate is hinged to the first valve plate, the driving piece drives the second valve plate, and enables the second valve plate to have a first working position which is staggered with the first valve plate so as to conduct the two diversion holes, and a second working position which is just face the first valve plate, at the outer edges of the first valve plate and the second valve plate are respectively jointed to the inner walls of the two sides of the valve body, with two water conservancy diversion holes of shutoff, reduced the wearing and tearing of gate valve in-process flashboard of opening and close.

Description

Gate valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a gate valve.

Background

Valves are devices that allow or stop the flow of media (liquids, gases, powders) in pipes and equipment and control the flow, i.e. valves are used to control the direction, pressure and flow of fluids in a fluid system. Valves come in many varieties, such as gate valves, throttle valves, ball valves, butterfly valves, diaphragm valves, plunger valves, plug valves, check valves, safety valves, pressure relief valves, and trap valves. The gate valve is a valve plate of an opening and closing part, the movement direction of the valve plate is vertical to the flow direction of fluid, the flow resistance of the gate valve is small, the water hammer phenomenon is not easy to generate, and the gate valve is symmetrical in two sides and simple in structure, so that the gate valve has a wide application range.

Among the prior art, the gate valve is provided with two valve plates usually, and two valve plates closely laminate with the inner wall of gate valve respectively, and at the gate valve in-process of opening and close, two valve plates laminate in the inner wall of gate valve all the time, and the flashboard that leads to the gate valve is worn seriously, and most gate valves are finally all because the flashboard damages and cause fluidic leakage, can't continue to use, have seriously shortened the life of gate valve, have restricted the application of gate valve.

Therefore, a gate valve is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gate valve to solve the gate valve and open and close the serious problem of in-process flashboard wearing and tearing.

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

the utility model provides a gate valve, the gate valve includes valve body, valve plate subassembly and driving piece, the valve body is provided with the valve pocket, two water conservancy diversion holes are worn to be equipped with the axle center in the both sides of valve body, the valve plate subassembly slide set up in the valve pocket, the driving piece install in the one end of valve body and its expansion end pass the valve body, the driving piece is configured as the drive the valve plate subassembly slides with the shutoff or switches on two the water conservancy diversion hole, the valve plate subassembly includes:

the first valve plate is abutted to the valve body when the first valve plate moves to be opposite to the flow guide hole; and

the second valve plate is parallel to the first valve plate, the second valve plate is hinged to the first valve plate, the driving piece is configured to drive the second valve plate, the second valve plate is provided with a first working position which is staggered with the first valve plate and further conducts two diversion holes, and a second working position which is opposite to the first valve plate, when the second valve plate is located at the second working position, a gap is formed between the second valve plate and the first valve plate, and the outer edges of the first valve plate and the second valve plate are respectively attached to the inner walls of two sides of the valve body so as to seal the two diversion holes.

Preferably, the valve body includes a valve cover, the driving member is installed to the valve cover, the gate valve further includes a link mechanism, and the link mechanism includes:

the first connecting rod is hinged to the second valve plate;

the second connecting rod is hinged to one end, far away from the second valve plate, of the first connecting rod, and one end, far away from the first connecting rod, of the second connecting rod is hinged to the valve cover; and

and two ends of the third connecting rod are respectively hinged to the movable end of the driving piece and the first connecting rod.

Preferably, a hinge point of the third link and the second link is close to a hinge point of the second link and the valve cover.

Preferably, one end of the second connecting rod, which is far away from the first connecting rod, is hinged to the edge of the valve cover.

Preferably, the length of the second link is greater than the length of the first link.

Preferably, the inner wall of the valve body is provided with a limiting part, the first valve plate is provided with a first roller, the axis of the first roller is parallel to the second valve plate, and when the first valve plate moves to be opposite to the flow guide hole, the first roller abuts against the limiting part.

Preferably, the second valve plate is provided with a second roller, the axis of the second roller is perpendicular to the first valve plate, and the second valve plate slides in the valve cavity through the second roller.

Preferably, the surfaces of the first roller and the second roller are coated with diamond-like carbon coatings.

Preferably, the valve body is provided with a reinforcement.

Preferably, one side of each of the first valve plate and the second valve plate, which is close to the valve body, is provided with a sealing ring, and the diameter of each sealing ring is larger than that of each diversion hole.

The utility model has the advantages that: the first valve plate and the second valve plate of the utility model are connected through the hinge connecting rod structure and the pin shaft, when the first valve plate and the second valve plate move towards or away from the guide hole along the direction perpendicular to the flowing direction of the fluid, the second valve plate is located at the first working position, the first valve plate and the second valve plate are staggered, meanwhile, the first valve plate and the second valve plate are far away from the inner wall of the valve body, so that the first valve plate and the second valve plate are prevented from being abraded in the process of moving along the direction vertical to the flowing direction of the fluid, when the first valve plate moves to be opposite to the diversion hole along the direction vertical to the flowing direction of the fluid, the second valve plate moves from the first working position to the second working position, simultaneously first valve plate and second valve plate move along the flow direction that is on a parallel with the fluid back to back for the outer fringe of first valve plate and second valve plate can laminate in the inner wall of the both sides of valve body respectively, and then blocks off two water conservancy diversion holes, has reduced the wearing and tearing of gate valve in-process flashboard.

Drawings

Fig. 1 is a schematic structural view of a gate valve in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a link mechanism in an embodiment of the present invention;

FIG. 3 is a front view of the valve plate assembly when the gate valve is turned on according to the embodiment of the present invention;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a front view of the valve plate assembly during plugging of the middle gate valve of the present invention;

fig. 6 is a side view of fig. 5.

In the figure:

1. a valve body; 11. a flow guide hole; 12. a valve cover; 13. a limiting part; 14. a reinforcing portion;

2. a valve plate assembly; 21. a first valve plate; 211. a first roller; 22. a second valve plate; 221. a second roller;

3. a drive member;

4. a link mechanism; 41. a first link; 42. a second link; 43. and a third link.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; 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 in specific cases to 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, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Referring to fig. 1 to 6, the present embodiment provides a gate valve, referring to fig. 1 to 6, the gate valve includes a valve body 1, a valve plate assembly 2 and a driving member 3, the valve body 1 is provided with a valve cavity, two diversion holes 11 are coaxially formed through two sides of the valve body 1, the valve plate assembly 2 is slidably disposed in the valve cavity, the driving member 3 is mounted at one end of the valve body 1, and a movable end thereof penetrates through the valve body 1, the driving member 3 is configured to drive the valve plate assembly 2 to slide so as to block or communicate the two diversion holes 11, the valve plate assembly 2 includes a first valve plate 21 and a second valve plate 22, when the first valve plate 21 moves to be opposite to the diversion holes 11, the first valve plate 21 abuts against the valve body 1, the second valve plate 22 is parallel to the first valve plate 21, the second valve plate 22 is hinged to the first valve plate 21, the driving member 3 is configured to drive the second valve plate 22, and the second valve plate 22 has a first working position interlaced with the first valve plate 21 so as to communicate the two diversion holes 11, and the second working position is opposite to the first valve plate 21, when the second valve plate 22 is located at the second working position, a gap is formed between the second valve plate 22 and the first valve plate 21, and the outer edges of the first valve plate 21 and the second valve plate 22 are respectively attached to the inner walls of two sides of the valve body 1 so as to seal the two diversion holes 11.

As shown in fig. 2 to 6, the first valve plate 21 and the second valve plate 22 are connected by a hinge connecting rod structure and a pin, when the first valve plate 21 and the second valve plate 22 move towards or away from the diversion hole 11 along a direction perpendicular to the flow direction of the fluid, the second valve plate 22 is located at a first working position, the first valve plate 21 and the second valve plate 22 are staggered, and the first valve plate 21 and the second valve plate 22 are away from the inner wall of the valve body 1, so as to avoid the first valve plate 21 and the second valve plate 22 from being worn during the movement along the direction perpendicular to the flow direction of the fluid, when the first valve plate 21 moves along the direction perpendicular to the flow direction of the fluid to be opposite to the diversion hole 11, the second valve plate 22 moves from the first working position to a second working position, and the first valve plate 21 and the second valve plate 22 move away from each other along the direction parallel to the flow direction of the fluid, so that the outer edges of the first valve plate 21 and the second valve plate 22 can respectively abut against the inner walls of two sides of the valve body 1, and then two water conservancy diversion holes 11 of shutoff, reduced the wearing and tearing of gate valve in-process flashboard of opening and close.

Specifically, in the present embodiment, in conjunction with fig. 3 to 6, when the two pilot holes 11 are in the conducting state, the first valve plate 21 and the second valve plate 22 are located above the pilot holes 11, and the lower end of the second valve plate 22 is located above the lower end of the first valve plate 21, that is, the second valve plate 22 and the first valve plate 21 are staggered. When the diversion hole 11 is closed, the driving member 3 drives the second valve plate 22 to move downwards, meanwhile, the second valve plate 22 drives the first valve plate 21 to move downwards, when the first valve plate 21 moves to abut against the inner wall of the valve cavity, the first valve plate 21 stops moving downwards, the second valve plate 22 continues to move downwards under the action of the driving member 3, and as the second valve plate 22 and the first valve plate 21 are connected to the first valve plate 21 through the hinge connecting rod structure and the pin shaft, when the second valve plate 22 continues to move downwards, the second valve plate 22 and the first valve plate 21 can move back and forth along the horizontal direction, so that the outer edges of the first valve plate 21 and the second valve plate 22 can respectively abut against the inner walls of the two sides of the valve body 1, and the diversion hole 11 is blocked; when the diversion hole 11 is opened, the driving member 3 drives the second valve plate 22 to move upwards firstly, meanwhile, the second valve plate 22 and the first valve plate 21 move relatively in the horizontal direction, the gap between the second valve plate 22 and the first valve plate 21 is reduced, namely, the second valve plate 22 and the first valve plate 21 are far away from the inner wall of the valve body 1, and when the second valve plate 22 continues to move upwards, the first valve plate 21 moves upwards together with the second valve plate 22 under the action of the hinge connecting rod structure.

It is to be understood that in the present embodiment, the driving member 3 may be selected as a cylinder, a motor, or the like, and the present embodiment is not particularly limited.

With the above structure, in this embodiment, the inner wall of the valve body 1 is provided with the limiting portion 13, the first valve plate 21 is provided with the first roller 211, the axis of the first roller 211 is parallel to the second valve plate 22, when the first valve plate 21 moves to just face the diversion hole 11, the first roller 211 abuts against the limiting portion 13, the limiting portion 13 can limit the downward movement distance of the first valve plate 21, and it is ensured that the first valve plate 21 is just face to the diversion hole 11, thereby preventing leakage. When the first valve plate 21 and the second valve plate 22 move away from each other or relatively, the first roller 211 can roll on the surface of the limiting portion 13 along the moving direction of the first valve plate 21, so that the first valve plate 21 can move conveniently.

Further, in the present embodiment, the second valve plate 22 is provided with a second roller 221, an axis of the second roller 221 is perpendicular to the first valve plate 21, the second valve plate 22 slides in the valve cavity through the second roller 221, and the second roller 221 abuts against an inner wall of the valve body 1 perpendicular to the second valve plate 22 and can roll on the inner wall of the valve body 1 perpendicular to the second valve plate 22, so as to realize the sliding of the valve plate assembly 2.

Since the first roller 211 and the second roller 221 are in direct contact with the inner wall of the valve body 1, in order to reduce the abrasion of the first roller 211 and the second roller 221, in the present embodiment, the surfaces of the first roller 211 and the second roller 221 are coated with a diamond-like carbon coating.

Preferably, in this embodiment, the first valve plate 21 and the second valve plate 22 are provided with a sealing ring on one side close to the valve body 1, the diameter of the sealing ring is larger than that of the diversion hole 11, and when the first valve plate 21 and the second valve plate 22 are moved away from each other, the sealing ring can be tightly attached to the inner wall of the valve body 1 parallel to the second valve plate 22, so as to prevent fluid leakage.

Referring to fig. 1 and 2, the valve body 1 includes a valve cover 12, the driving member 3 is mounted on the valve cover 12, the gate valve further includes a link mechanism 4, the link mechanism 4 includes a first link rod 41, a second link rod 42 and a third link rod 43, the first link rod 41 is hinged to the second valve plate 22, the second link rod 42 is hinged to one end of the first link rod 41 away from the second valve plate 22, one end of the second link rod 42 away from the first link rod 41 is hinged to the valve cover 12, and two ends of the third link rod 43 are respectively hinged to the movable end of the driving member 3 and the first link rod 41. The driving member 3 can drive the first connecting rod 41 and the second connecting rod 42 to move, and the first connecting rod 41 drives the valve plate assembly 2 to move up and down so as to block or conduct the two diversion holes 11. Second connecting rod 42 can rotate around its pin joint with valve gap 12, and the expansion end of driving piece 3 acts on between the head and the tail of second connecting rod 42 through third connecting rod 43 for the displacement of valve plate subassembly 2 is greater than the displacement of the expansion end of driving piece 3 doubly, has greatly reduced the manufacturing cost of gate valve.

Further, the hinge point of the third connecting rod 43 and the second connecting rod 42 is close to the hinge point of the second connecting rod 42 and the valve cover 12, that is, the distance between the hinge point of the third connecting rod 43 and the second connecting rod 42 and the hinge point of the second connecting rod 42 and the first connecting rod 41 is greater than the distance between the hinge point of the third connecting rod 43 and the second connecting rod 42 and the hinge point of the second connecting rod 42 and the valve cover 12, so that the original moving distance of the valve plate assembly 2 is realized, and the moving distance of the movable end of the driving member 3 is further reduced.

Further, the end of the second link 42 remote from the first link 41 is hinged to the edge of the valve cover 12, further increasing the multiple of the moving distance of the valve plate assembly 2 relative to the moving end of the actuator 3.

As shown in fig. 2, the length of the first link 41 is greater than the length of the second link 42, which further increases the multiple of the moving distance of the valve plate assembly 2 relative to the moving distance of the movable end of the actuator 3, further reducing the manufacturing cost of the gate valve.

It will be appreciated that in this embodiment, the pin surfaces at all of the hinges may be coated with a diamond-like coating to increase their wear resistance.

Referring to fig. 1, the valve body 1 is provided with a protrusion toward the outside, that is, the valve body 1 is provided with a reinforcing portion 14, which enhances the structural strength of the gate valve, and the valve body 1 is integrally formed to facilitate manufacturing.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a gate valve, the gate valve includes valve body (1), valve plate subassembly (2) and driving piece (3), valve body (1) is provided with the valve pocket, two water conservancy diversion holes (11) are worn to be equipped with the axle center in the both sides of valve body (1), valve plate subassembly (2) slide set up in the valve pocket, driving piece (3) install in the one end of valve body (1) and its expansion end pass valve body (1), driving piece (3) are configured as the drive valve plate subassembly (2) slide with the shutoff or switch on two water conservancy diversion hole (11), its characterized in that, valve plate subassembly (2) include:

the first valve plate (21), when the first valve plate (21) moves to face the diversion hole (11), the first valve plate (21) abuts against the valve body (1); and

the second valve plate (22) is parallel to the first valve plate (21), the second valve plate (22) is hinged to the first valve plate (21), the driving piece (3) is configured to drive the second valve plate (22), the second valve plate (22) is provided with a first working position and a second working position, the first working position and the second working position are staggered with the first valve plate (21) to conduct the two diversion holes (11), the second working position is opposite to the first valve plate (21), when the second valve plate (22) is located at the second working position, a gap is formed between the second valve plate (22) and the first valve plate (21), and the outer edges of the first valve plate (21) and the second valve plate (22) are respectively attached to the inner walls of the two sides of the valve body (1) to seal the two diversion holes (11).

2. A gate valve according to claim 1, characterized in that the valve body (1) comprises a valve cover (12), the driving member (3) being mounted to the valve cover (12), the gate valve further comprising a link mechanism (4), the link mechanism (4) comprising:

a first connecting rod (41) hinged to the second valve plate (22);

the second connecting rod (42) is hinged to one end, away from the second valve plate (22), of the first connecting rod (41), and one end, away from the first connecting rod (41), of the second connecting rod (42) is hinged to the valve cover (12); and

and two ends of the third connecting rod (43) are respectively hinged to the movable end of the driving piece (3) and the first connecting rod (41).

3. Gate valve according to claim 2, characterized in that the hinge point of the third link (43) and the second link (42) is close to the hinge point of the second link (42) and the valve cover (12).

4. A gate valve according to claim 3, characterised in that the end of the second link (42) remote from the first link (41) is hinged to the edge of the valve closure (12).

5. A gate valve according to claim 4, characterized in that the length of the second link (42) is greater than the length of the first link (41).

6. The gate valve according to claim 1, characterized in that the inner wall of the valve body (1) is provided with a limiting part (13), the first valve plate (21) is provided with a first roller (211), the axis of the first roller (211) is parallel to the second valve plate (22), and when the first valve plate (21) moves to face the diversion hole (11), the first roller (211) abuts against the limiting part (13).

7. A gate valve according to claim 6, characterized in that the second valve plate (22) is provided with a second roller (221), the axis of the second roller (221) being perpendicular to the first valve plate (21), the second valve plate (22) sliding in the valve cavity by means of the second roller (221).

8. A gate valve according to claim 7, characterized in that the surfaces of the first roller (211) and the second roller (221) are coated with a diamond-like coating.

9. Gate valve according to claim 1, characterised in that the valve body (1) is provided with a reinforcement (14).

10. A gate valve according to claim 1, characterized in that the first valve plate (21) and the second valve plate (22) are provided with sealing rings on the side close to the valve body (1), and the diameter of the sealing rings is larger than that of the diversion hole (11).