CN216768415U

CN216768415U - Online quick repair type gate valve

Info

Publication number: CN216768415U
Application number: CN202220119713.XU
Authority: CN
Inventors: 刘会勇; 王振林; 朱二江; 黄丽红
Original assignee: Haodeli Fluid Control Co ltd
Current assignee: Haodeli Fluid Control Co ltd
Priority date: 2022-01-18
Filing date: 2022-01-18
Publication date: 2022-06-17
Anticipated expiration: 2032-01-18

Abstract

The utility model belongs to the technical field of valves, and discloses an online quick-repair gate valve which comprises a valve body, wherein a valve cavity and a fluid passage are arranged in the valve body, the valve cavity is communicated with the fluid passage, a valve rod is arranged in the valve cavity, a flashboard is arranged at the tail end of the valve rod, the flashboard moves up and down to open and close the fluid passage, valve seat frames are arranged at two ports of the fluid passage communicated with the valve cavity, the valve seat frames are fixedly connected with the ports of the fluid passage, movable valve seats are detachably arranged on the valve seat frames, a sealing structure is arranged between the movable valve seats and the valve seat frames, and the flashboard moves downwards and then is in sealing fit connection with the movable valve seats; the valve seat frame is fixedly connected to the valve body, so that the movable valve seat can be conveniently detached, replaced and maintained, and the problem of difficulty in original maintenance is avoided.

Description

Online quick repair type gate valve

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to an online quick-repair type gate valve.

Background

The gate valve is an opening and closing member gate plate, the gate plate is opened and closed up and down so as to control the flow of fluid, the gate valve can be opened and closed fully or fully, the gate plate and the valve seat are sealed to open and close, and normally, a sealing surface between the gate plate and the valve seat is subjected to surfacing welding of metal materials so as to increase the wear resistance. In the existing gate valve, valve seats are all fixedly welded, and cannot be replaced on line; like this when maintaining flashboard, disk seat, often need just can open after dismantling whole big heavy valve again and operate, whole process is wasted time and energy, and work efficiency is low, increase cost.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides an online quick-repair gate valve, a valve seat of the gate valve is of a movable and detachable structure, so that a gate plate and the valve seat can be replaced online, and the problems of internal leakage of the valve and inconvenience in online maintenance are effectively solved. The technical scheme adopted for achieving the purpose is as follows:

the utility model provides an online quick service gate valve, includes the valve body, is equipped with valve pocket and fluid passage in the valve body, and the valve pocket is linked together with fluid passage, is equipped with the valve rod in the valve pocket, is equipped with the flashboard at the valve rod end, and flashboard up-and-down motion all installs valve seat frame in two port departments of fluid passage and valve pocket UNICOM with opening and closing of fluid passage, valve seat frame and fluid passage port fixed connection, demountable installation have movable valve seat on valve seat frame, and be equipped with seal structure between movable valve seat and valve seat frame, and the flashboard is connected with movable valve seat sealing fit after the downstream.

Preferably, the sealing structure between the movable valve seat and the valve seat frame is labyrinth seal, and a sealing gasket is arranged between the movable valve seat and the valve seat frame.

Preferably, the movable valve seat and the valve seat frame are detachably connected through a plurality of fixing bolts arranged around the circumferential direction.

Preferably, a disc spring assembly is sleeved on the fixing bolt.

Preferably, the sealing surfaces on the two sides of the gate plate are obliquely arranged from top to bottom towards the middle, and the sealing surfaces of the movable valve seats on the two sides and the sealing surfaces on the two sides of the gate plate are obliquely arranged in a fitting manner.

Preferably, the sealing convex layer is arranged on the sealing surface of the flashboard and the sealing surface of the movable valve seat.

The utility model has the following beneficial effects: (1) the original valve seat structure is cancelled, and the valve seat is set to be a combined structure of a movable valve seat and a valve seat frame, so that the valve seat frame is fixedly connected to the valve body, the movable valve seat can be conveniently detached, replaced and maintained, and the original problem of difficult maintenance is avoided;

(2) a labyrinth seal structure and a seal washer structure are arranged between the movable valve seat and the valve seat frame for two seals, so that the sealing performance is ensured to the maximum extent, internal leakage is avoided, and the service life is prolonged;

(3) the sealing surface between the flashboard and the movable valve seat is arranged in an inclined mode, the gravity action of the flashboard is fully utilized to compact and seal, the sealing performance is greatly improved, and the phenomenon of internal leakage is avoided.

Drawings

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

fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, an on-line quick-repair gate valve comprises a valve body 2, a valve cavity 3 and a fluid passage 1 are arranged in the valve body 2, the valve cavity 3 is communicated with the fluid passage 1, a valve rod 4 is arranged in the valve cavity 3, a gate plate 5 is arranged at the tail end of the valve rod 4, and the gate plate 5 moves up and down to open and close the fluid passage 1; all install valve seat frame 8 at two port departments of fluid passage 1 and valve chamber 3 UNICOM, valve seat frame 8 and 1 port fixed connection of fluid passage, demountable installation has movable disk seat 9 on valve seat frame 8, and is equipped with seal structure between movable disk seat 9 and valve seat frame 8, and flashboard 5 is connected with movable disk seat 9 after the downstream is sealed to cooperate.

The sealing structure between the movable valve seat 9 and the valve seat frame 8 is a labyrinth seal 6, meanwhile, a sealing gasket 7 is arranged between the movable valve seat 9 and the valve seat frame 8, and the high-pressure durable sealing effect is achieved through two sealing arrangements.

In this embodiment, the movable valve seat 9 and the valve seat frame 8 are detachably connected by a plurality of fixing bolts 10 which are circumferentially arranged; meanwhile, a disc spring assembly 11 is sleeved on the fixing bolt 10.

On the other hand, the sealing surfaces on the two sides of the gate plate 5 are obliquely arranged from top to bottom towards the middle, and the sealing surfaces of the movable valve seats 9 on the two sides are obliquely arranged in a manner of being adaptive to the sealing surfaces on the two sides of the gate plate 5; meanwhile, sealing convex layers 12 can be arranged on the sealing surface of the flashboard 5 and the sealing surface of the movable valve seat 9.

When the utility model is used, the gate plate 5 moves downwards to be propped against the movable valve seats 9 on the two sides to close the fluid channel 1, and due to the arrangement of the inclined surface, the sealing surface is tighter under the action of the gravity of the gate plate 5, and the sealing effect is better. When maintenance is needed, online replacement and maintenance can be realized only by lifting the flashboard 5 out and detaching the movable valve seat 9 from the valve seat frame 8, and the problems of internal leakage of the valve and inconvenience in online maintenance are effectively solved. The problem that the original valve seat is welded in the valve body and cannot be detached and replaced is avoided, the working efficiency is greatly improved, and the cost is reduced.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides an online quick service gate valve, includes the valve body, is equipped with valve pocket and fluid passage in the valve body, and the valve pocket is linked together with fluid passage, is equipped with the valve rod in the valve pocket, is equipped with the flashboard at the valve rod end, and flashboard up-and-down motion is in order to realize opening and being closed to fluid passage, its characterized in that, all installs valve seat frame in two port departments of fluid passage and valve pocket UNICOM, valve seat frame and fluid passage port fixed connection, demountable installation have movable valve seat on valve seat frame, and be equipped with seal structure between movable valve seat and valve seat frame, and the flashboard is connected with movable valve seat sealing after the downstream.

2. The on-line quick service gate valve of claim 1, wherein the sealing structure between the movable valve seat and the valve seat holder is a labyrinth seal, and a sealing gasket is provided between the movable valve seat and the valve seat holder.

3. The on-line quick-repair gate valve according to claim 1 or 2, wherein the movable valve seat is detachably connected to the valve seat frame by a plurality of fixing bolts circumferentially arranged.

4. The on-line quick-repair gate valve of claim 3, wherein a disc spring assembly is sleeved on the fixing bolt.

5. The on-line quick-repair gate valve of claim 3, wherein the sealing surfaces on both sides of the gate plate are obliquely arranged from top to bottom toward the middle, and the sealing surfaces of the movable valve seats on both sides are obliquely arranged in a manner of being adaptive to the sealing surfaces on both sides of the gate plate.

6. The on-line quick-service gate valve of claim 3, wherein a sealing bead layer is provided on both the sealing surface of the gate plate and the sealing surface of the movable valve seat.