CN217153042U

CN217153042U - Gate valve that leakproofness is strong

Info

Publication number: CN217153042U
Application number: CN202220646113.9U
Authority: CN
Inventors: 项策; 陈永刚; 薛纪亥; 汪德维
Original assignee: Tanggong Valve Group Co ltd
Current assignee: Tanggong Valve Group Co ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-08-09
Anticipated expiration: 2032-03-23

Abstract

The utility model belongs to the valve field, especially, a gate valve that leakproofness is strong, because long-term opening and close the use to current gate valve, the easy valve plate of appearing and the fluid passage of valve body leak, and then the leakproofness reduces, has directly influenced the problem of the use of gate valve in some specific environment, now proposes following scheme, and it includes the valve body, be provided with the passageway that supplies the fluid to pass in the valve body, be provided with the valve plate that is used for cutting off the passageway in the valve body, the top of valve plate is connected with the valve rod, the top of valve body is connected with the valve gap through the bolt, the valve rod runs through the valve gap and can move about; the utility model discloses when well sealing member cuts off valve body fluid passage, under the elasticity that resets of spring for sealing member and valve body fluid passage closely laminate, under the auxiliary action of sealing washer, have improved the leakproofness that the valve plate cut off valve body fluid passage greatly simultaneously.

Description

Gate valve that leakproofness is strong

Technical Field

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

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. The valve can be used for controlling various types of fluid such as water, steam, oil products, gas, slurry, various corrosive media, liquid metal, radioactive fluid and the like to flow, the working pressure of the valve can be ultrahigh pressure from 0.0013MPa to 1000MPa, and the working temperature can be ultralow at-270 ℃ to high at 1430 ℃.

The gate valve is a shutter, the movement direction of the shutter is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. The gate valve seals through disk seat and flashboard contact, and present gate valve is opening and close the use owing to for a long time, and the seepage appears in the fluid passage of valve plate and valve body easily appearing, and then the leakproofness reduces, has directly influenced the use of gate valve in some specific environment, so we have proposed a gate valve that the leakproofness is strong for solve above-mentioned problem that provides.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the existing gate valve in the prior art is being opened and closed for a long time and is being used, the seepage appears in the fluid passage of valve plate and valve body easily, and then the leakproofness reduces, has directly influenced the shortcoming of the use of gate valve in some specific environment, and the strong gate valve of leakproofness that proposes.

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

the utility model provides a gate valve that leakproofness is strong, includes the valve body, be provided with the passageway that supplies the fluid to pass in the valve body, be provided with the valve plate that is used for cutting off the passageway in the valve body, the top of valve plate is connected with the valve rod, there is the valve gap at the top of valve body through bolted connection, the valve rod runs through the valve gap and can move about from top to bottom, be provided with the packing that is used for improving valve rod sealing performance in the valve gap and press the cover and pack the clamp plate, the valve plate includes two sealing members, and two sealing members can be used for cutting off valve body fluid passage, and two sealing members all are connected with the elastic component who is used for resumeing initial position, the sealing member sets up the bottom at the valve rod.

Preferably, the same mounting seat is slidably mounted at the tops of the two sealing elements, and the top of the mounting seat is connected with the bottom of the valve rod.

Preferably, the elastic component comprises a fixed box fixedly installed at the bottom of the installation seat, a partition plate is fixedly installed in the fixed box, springs are fixedly installed on two sides of the partition plate, a movable plate is fixedly installed on one side, away from each other, of each spring, a connecting rod is fixedly connected to one side, away from each other, of each movable plate, and the other end of each connecting rod is fixed to the corresponding sealing piece.

Preferably, the sealing member is a circular plate of metal fitted to the fluid passage of the valve body.

Preferably, one side of each of the two sealing elements, which is far away from each other, is fixedly connected with a hollow sealing ring matched with the valve body channel.

Preferably, the bottom fixed mounting of mount pad has the slide, the top fixed mounting of sealing member has the slider, and slider and slide sliding connection.

The utility model discloses in, cut off or open valve body fluid passage through utilizing the steerable valve plate of valve rod, and when the valve plate cut off valve body fluid passage, can make two sealing members draw in to the direction that is close to each other, reached compression spring's function, and when the sealing member cut off valve body fluid passage, under the elasticity that resets of spring for sealing member and valve body fluid passage closely laminate, simultaneously under the auxiliary action of sealing washer, have improved the leakproofness that the valve plate cut off valve body fluid passage very much.

Drawings

Fig. 1 is a schematic view of an overall structure of a gate valve with high sealing performance according to the present invention;

fig. 2 is the utility model provides a valve plate structure sketch map of gate valve that leakproofness is strong.

In the figure: 1. a valve body; 2. a valve plate; 201. a mounting seat; 202. a slideway; 203. a seal member; 204. a seal ring; 205. a connecting rod; 206. a fixed box; 207. a partition plate; 208. a spring; 209. moving the plate; 3. a valve stem; 4. a valve cover; 5. a bolt; 6. pressing and sleeving the filler; 7. and (5) filling and pressing a plate.

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.

Example one

Referring to fig. 1-2, a gate valve with strong sealing performance comprises a valve body 1, a channel for fluid to pass through is arranged in the valve body 1, a valve plate 2 for cutting off the channel is arranged in the valve body 1, a valve rod 3 is fixedly connected to the top of the valve plate 2, a valve cover 4 is connected to the top of the valve body 1 through a bolt 5, the valve rod 3 is vertically and slidably mounted in the valve cover 4, a packing pressing sleeve 6 and a packing pressing plate 7 for improving the sealing performance of the valve rod 3 are arranged in the valve cover 4, the valve rod 3 penetrates through the packing pressing sleeve 6 and the packing pressing plate 7, a hand wheel is rotatably mounted in the valve cover 4, a hand wheel inner ring is fixedly connected with a nut, an external thread is arranged on the upper portion of the valve rod 3, a portion of the valve rod 3 with the external thread penetrates through a hand wheel nut inner ring and is in threaded connection with the nut inner ring, the hand wheel valve plate 2 comprises two sealing elements 203, and the two sealing elements 203 can be used for cutting off the fluid channel of the valve body 1, an elastic assembly for restoring the initial position is connected to both the packing 203, and the packing 203 is disposed at the bottom of the valve stem 3.

In this embodiment, the same mounting seat 201 is slidably mounted on the top of the two sealing members 203, and the top of the mounting seat 201 is connected with the bottom of the valve rod 3.

In this embodiment, the elastic component includes fixed mounting at the fixed box 206 of mount pad 201 bottom, and fixed mounting has baffle 207 in the fixed box 206, and the equal fixed mounting in both sides of baffle 207 has spring 208, and the equal fixed mounting in one side that two springs 208 kept away from each other has a movable plate 209, and the equal fixedly connected with connecting rod 205 in one side that two movable plates 209 kept away from each other, and the other end of connecting rod 205 and corresponding sealing member 203 are fixed mutually.

In this embodiment, the sealing member 203 is a circular plate of metal adapted to the fluid passage of the valve body 1.

In this embodiment, the two sides of the sealing member 203 away from each other are both fixedly connected with a hollow sealing ring 204 adapted to the channel of the valve body 1.

In this embodiment, the bottom of the mounting seat 201 is fixedly mounted with a slide 202, the top of the sealing member 203 is fixedly mounted with a slide block, and the slide block is slidably connected with the slide 202.

The working principle is as follows: the valve rod 3 can control the valve plate 2 to cut off or open the fluid passage of the valve body 1, when the valve plate 2 cuts off the fluid passage of the valve body 1, the two sealing elements 203 can be folded towards the direction close to each other, the function of the compression spring 208 is achieved, and when the sealing elements 203 cut off the fluid passage of the valve body 1, under the reset elasticity of the spring 208, the sealing elements 203 and the fluid passage of the valve body 1 are tightly attached, and meanwhile, under the auxiliary action of the sealing ring 204, the sealing performance of the valve plate 2 for cutting off the fluid passage of the valve body 1 is greatly improved.

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. A gate valve with strong sealing performance comprises a valve body (1), wherein a channel for a fluid to pass through is arranged in the valve body (1), a valve plate (2) for cutting off a channel is arranged in the valve body (1), the top of the valve plate (2) is connected with a valve rod (3), the top of the valve body (1) is connected with a valve cover (4) through a bolt (5), the valve rod (3) penetrates through the valve cover (4) and can move up and down, a packing pressing sleeve (6) and a packing pressing plate (7) for improving the sealing performance of the valve rod (3) are arranged in the valve cover (4), the valve plate (2) is characterized by comprising two sealing pieces (203), the two sealing pieces (203) can be used for cutting off a fluid channel of the valve body (1), the two sealing pieces (203) are both connected with an elastic assembly used for restoring an initial position, and the sealing pieces (203) are arranged at the bottom of the valve rod (3).

2. A gate valve with high sealing performance as claimed in claim 1, wherein the same mounting seat (201) is slidably mounted on the top of the two sealing members (203), and the top of the mounting seat (201) is connected with the bottom of the valve stem (3).

3. The gate valve with high sealing performance according to claim 2, wherein the elastic assembly comprises a fixed box (206) fixedly installed at the bottom of the installation seat (201), a partition plate (207) is fixedly installed in the fixed box (206), springs (208) are fixedly installed on both sides of the partition plate (207), a moving plate (209) is fixedly installed on one side, away from each other, of each of the two springs (208), a connecting rod (205) is fixedly connected on one side, away from each other, of each of the two moving plates (209), and the other end of each connecting rod (205) is fixed to the corresponding sealing element (203).

4. A gate valve with high sealing performance according to any one of claims 1-3, characterized in that the sealing member (203) is a metal circular plate fitted to the fluid passage of the valve body (1).

5. A gate valve with high sealing performance according to any one of claims 1-3, characterized in that the sides of the two sealing members (203) far away from each other are fixedly connected with hollow sealing rings (204) matched with the channel of the valve body (1).

6. The gate valve with high sealing performance according to claim 2, wherein a slide way (202) is fixedly installed at the bottom of the installation seat (201), a slide block is fixedly installed at the top of the sealing member (203), and the slide block is slidably connected with the slide way (202).