CN212080184U

CN212080184U - Stop valve

Info

Publication number: CN212080184U
Application number: CN202020834094.3U
Authority: CN
Inventors: 李千桐
Original assignee: Yongjia Weidun Valve Co ltd
Current assignee: Yongjia Weidun Valve Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-12-04
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a stop valve, including the valve body, through screw and valve body fixed connection's valve gap, with valve rod and the valve clack of being connected with the valve rod of valve gap threaded connection, still include: the cleaning device is fixedly arranged on the inner surface wall of the valve body; the limiting block is fixedly arranged on the valve rod; and the indicating part is arranged on the valve rod between the valve cover and the hand wheel to indicate the height position of the valve clack. The utility model discloses novel structure, convenient operation through setting up cleaning device for can drive the valve clack when rotating the valve rod and rotate, the clearance valve clack through setting up stopper and indicating part, makes when rotating the valve rod and driving the valve clack and reciprocate, the high position of valve clack remains throughout at suitable height, can not too high also can not hang down excessively, thereby has effectively avoided cutting between the sealed face of valve clack and the valve body to rub, reduces the sealed face wearing and tearing of valve clack, prolongs the life of valve.

Description

Stop valve

Technical Field

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

Background

The stop valve, also called stop valve, is the most widely used valve, so it is popular, because the friction between the sealing surfaces is small in the opening and closing process, it is durable, the opening height is not large, it is easy to manufacture, it is convenient to maintain, not only suitable for the medium and low pressure, but also suitable for the high pressure. The stop valve belongs to a forced sealing type valve, the opening and closing part of the stop valve is a plug-shaped valve clack, a sealing surface is a plane or sea conical surface, and the valve clack linearly moves along the central line of a valve seat, so that pressure must be applied to the valve clack when the valve is closed to ensure that the forced sealing surface does not leak.

At present current stop valve when using, the valve clack reciprocates, and the valve clack can receive the erosion of medium, has solid tiny particle to be eroded to sealed face on for valve clack and connector are inseparable, and not only sealed effect is poor, leads to the medium to leak, moreover because the medium flows out from the gap of valve clack and connector, and is strong to the sealed face scouring effect of valve clack, leads to sealed face to damage easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: there is provided a shutoff valve to solve the problems set forth in 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 stop valve, includes the valve body, through screw and valve body fixed connection's valve gap, with valve rod and the valve clack of being connected with the valve rod of valve gap threaded connection, still includes:

the cleaning device is fixedly arranged on the inner surface wall of the valve body;

the limiting block is fixedly arranged on the valve rod;

and the indicating part is arranged on the valve rod between the valve cover and the hand wheel to indicate the height position of the valve clack.

As a further description of the above technical solution:

one end of the valve rod is connected with the hand wheel, and the other end of the valve rod is fixedly connected with the valve clack.

As a further description of the above technical solution:

the cleaning device is of an annular structure and is welded on the valve body.

As a further description of the above technical solution:

a circular groove is formed in the contact surface of the valve body and the valve cover, and a sealing ring is arranged in the groove.

As a further description of the above technical solution:

and a packing seal is arranged at the contact position of the valve rod and the valve cover.

As a further description of the above technical solution:

the indicating part comprises a dial plate, a sliding rod and a pointer, and the dial plate is movably connected to the valve rod through a rotating shaft; the two sliding rods are fixedly arranged on the valve cover and penetrate through the through holes in the dial plate; the pointer is fixedly arranged on the valve rod.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, through setting up cleaning device for can drive the valve clack when rotating the valve rod and rotate, the clearance valve clack reduces the sealed face wearing and tearing of valve clack, prolongs the life of valve.

2. The utility model discloses in, through setting up stopper and indicating part for when the rotation valve rod drives the valve clack and reciprocates, the high position of valve clack remains throughout at suitable height, can not be too high and can not cross low excessively, thereby effectively avoided cutting between the sealed face of valve clack and the valve body and rub, reduce the sealed face wearing and tearing of valve clack, the life of extension valve.

Drawings

Fig. 1 shows a schematic overall sectional structure provided according to an embodiment of the present invention;

fig. 2 is a schematic top view of a sweeping device provided according to an embodiment of the present invention;

fig. 3 is an enlarged structural view of an indicating part according to an embodiment of the present invention;

fig. 4 shows a schematic top view structure diagram of an indicating portion provided according to an embodiment of the present invention.

Illustration of the drawings:

1. a valve body; 2. a valve cover; 3. a valve stem; 4. a valve flap; 5. a cleaning device; 6. a limiting block; 7. a dial plate; 8. a slide bar; 9. a pointer.

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. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a stop valve, includes valve body 1, through screw and 1 fixed connection's of valve body valve gap 2, with 2 threaded connection's of valve gap valve rod 3 and with the valve clack 4 of 3 connections of valve rod, still include:

the cleaning device 5 is fixedly arranged on the inner surface wall of the valve body 1, and cleans the valve clack 4 when the valve clack rotates;

the limiting block 6 is fixedly arranged on the valve rod 3 and limits the height position of the valve clack 4;

and the indicating part is arranged on the valve rod 3 between the valve cover 2 and the hand wheel to indicate the height position of the valve clack 4 and comprises a dial 7, a sliding rod 8 and a pointer 9.

Specifically, as shown in fig. 1, a circular groove is formed in a contact surface between a valve body 1 and a valve cover 2, a sealing ring is arranged in the groove, and a packing seal is arranged at a contact position between a valve rod 3 and the valve cover 2; the sealing performance of the valve is ensured to the maximum extent.

Specifically, as shown in fig. 1, 3 and 4, the indicating part comprises a dial 7, a sliding rod 8 and a pointer 9, wherein the dial 7 is movably connected to the valve rod 3 through a rotating shaft and can move up and down along with the valve rod 3; the two sliding rods 8 are fixedly arranged on the valve cover 2 and penetrate through holes in the dial 7 to limit the dial 7, so that the dial 7 does not rotate along with the valve rod 3; the pointer 9 is fixedly arranged on the valve rod 3, the height position of the valve clack 4 is represented by the scale on the dial 7, and when the pointer 9 reaches the maximum value, the valve clack 4 just completely seals the valve; when the valve rod 3 is rotated to drive the valve clack 4 to move up and down, the height position of the valve clack 4 is always kept at a proper height and cannot be too high or too low.

The working principle is as follows: when the stop valve needs to be closed, the valve rod 3 is rotated, the valve rod 3 drives the valve clack 4 to move downwards, in the moving process, the valve clack 4 is firstly contacted with the cleaning device 5, the cleaning device 5 cleans the sealing surface of the valve clack 4, then the valve clack 4 continues to move downwards until the valve clack 4 completely seals the valve, the pointer 9 reaches the maximum value, the valve clack 4 is effectively prevented from being excessively extruded, and the valve clack 4 is enabled not to be tight with a connecting port, so that the medium leakage problem is caused.

The above, only be the concrete implementation of the preferred embodiment 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, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a stop valve, including valve body (1), through the screw with valve gap (2) of valve body (1) fixed connection, with valve rod (3) of valve gap (2) threaded connection and valve clack (4) of being connected with valve rod (3), its characterized in that still includes:

the cleaning device (5), the cleaning device (5) is fixedly arranged on the inner surface wall of the valve body (1);

the limiting block (6), the limiting block (6) is fixedly arranged on the valve rod (3);

the indicating part is arranged on the valve rod (3) between the valve cover (2) and the hand wheel to indicate the height position of the valve clack (4).

2. A stop valve as claimed in claim 1, characterized in that the valve rod (3) is connected at one end to a hand wheel and at the other end to a fixed connection to the valve flap (4).

3. A shut-off valve according to claim 1, characterized in that the cleaning device (5) is of annular construction and is welded to the valve body (1).

4. A stop valve as claimed in claim 1, wherein the contact surface of the valve body (1) and the valve cover (2) is provided with a circular groove, and a sealing ring is arranged in the groove.

5. A stop valve as claimed in claim 1, wherein a packing seal is provided where the valve stem (3) meets the bonnet (2).

6. A stop valve as claimed in claim 1, characterized in that said indicator comprises a dial (7), a slide rod (8) and a pointer (9), said dial (7) being movably connected to said stem (3) by means of a rotary shaft; the two sliding rods (8) are fixedly arranged on the valve cover (2) and penetrate through holes in the dial plate (7); the pointer (9) is fixedly arranged on the valve rod (3).