CN213332393U

CN213332393U - Stop valve

Info

Publication number: CN213332393U
Application number: CN202022216244.7U
Authority: CN
Inventors: 戴婉婉
Original assignee: Taizhou Zhonghe Copper Co Ltd
Current assignee: Taizhou Zhonghe Copper Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-06-01
Anticipated expiration: 2030-09-30

Abstract

The utility model provides a stop valve belongs to stop valve technical field. It has solved the not good and big problem of noise of current stop valve internal seal nature. The stop valve comprises a valve body with a water inlet and a water outlet, a valve cover, a valve rod and a valve clack, wherein a valve port which enables the water inlet and the water outlet in the valve body to be communicated is arranged in the valve body, a sealing sleeve which is vertically arranged and used for enhancing internal sealing is arranged in the valve body, one end of the sealing sleeve is abutted to the valve cover, the other end of the sealing sleeve is abutted to the inner wall of the valve port through the valve cover, a plurality of communicating holes which enable the sealing sleeve to be communicated with the water outlet in the sealing sleeve are formed in the peripheral wall of the position of the water outlet of the sealing sleeve, the valve clack is arranged in the sealing sleeve, the lower end of the valve clack is provided with a sealing structure which is connected. The utility model has the advantages of good and noise reduction of leakproofness.

Description

Stop valve

Technical Field

The utility model belongs to the technical field of the stop valve, a stop valve is related to.

Background

The stop valve, also called stop valve, is the most widely used valve, 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, it is not only suitable for the medium and low pressure, but also suitable for the high pressure, this kind of valve is very suitable for cutting off or adjusting and throttle. However, the conventional stop valve usually adopts the first-stage throttling, namely throttling is realized through a sealing surface between a valve seat and a valve clack, the sealing surface is not durable, the throttling effect is not obvious, and meanwhile, the internal noise is larger due to the flow rate of liquid.

Disclosure of Invention

The utility model aims at providing a stop valve of solving above-mentioned problem to the above-mentioned problem that exists among the prior art.

The purpose of the utility model can be realized by the following technical proposal: a stop valve comprises a valve body with a water inlet and a water outlet, a valve cover, a valve rod and a valve clack, wherein a valve port which enables the water inlet and the water outlet in the valve body to be communicated is arranged in the valve body, it is characterized in that a sealing sleeve which is vertically arranged and used for strengthening the internal sealing performance is arranged in the valve body, one end of the sealing sleeve is abutted against the valve cover, the other end of the sealing sleeve is abutted against the inner wall of the valve port through the valve cover, the outer peripheral wall of the sealing sleeve at the water outlet is provided with a plurality of communicating holes which enable the sealing sleeve to be communicated with the water outlet, the valve clack is arranged in the sealing sleeve, the outer circumferential wall of the valve clack is in sliding fit with the inner circumferential wall of the sealing sleeve, the lower end part of the valve clack is provided with a sealing structure which is connected with the valve clack and is in butt fit with the valve port, the inner wall of the valve body at the valve port is provided with a buffer structure which is fixedly connected with the valve body and used for slowing down the flow velocity of liquid.

In the stop valve, the seal sleeve is axially and downwardly protruded on the end face which is in contact with and attached to the inner wall of the valve body, the seal sleeve is embedded into the seal ring in the valve body, and the cross section of the seal ring is in the shape of an isosceles trapezoid with two symmetrical structures.

In the stop valve, the outer side of the upper end part of the valve clack is provided with an outer chamfer.

In foretell stop valve, seal structure include the spliced pole that is connected with the valve clack and the conflict lid that is connected with the spliced pole, the external diameter of conflict lid be the cone that reduces gradually, the valve body be located and seted up interior chamfer on the inner wall of valve gate department, the inclination of this interior chamfer and the inclination phase-match of cone.

In the stop valve, the inner wall of the valve body at the inner chamfer is provided with a plurality of circulation holes convenient for liquid to flow.

In foretell stop valve, buffer structure including vertical set up in the buffer cylinder of valve port department, the periphery wall of buffer cylinder on seted up a plurality of rows of limbers, the periphery wall of buffer cylinder upper end department on be provided with radial outside bellied protruding ring portion one, the valve body be located and be provided with radial inside arch on the intraoral inner wall of valve and with protruding ring portion inconsistent complex protruding ring portion two, the buffer cylinder be located the upper end opening part and be provided with rather than link firmly and be used for filtering impurity's filter screen mutually.

Compared with the prior art, this stop valve has following advantage:

1. the setting of multistage seal structure has strengthened the inside leakproofness of valve body, has improved throttle effect, is provided with buffer structure simultaneously, makes the velocity of flow of liquid in the valve body can obtain the buffering to the noise that produces when reducing liquid and flowing.

Drawings

Fig. 1 is a schematic sectional view of the shutoff valve.

In the figure, 1, a valve body; 2. a valve cover; 3. a valve stem; 4. a valve flap; 5. a valve port; 6. sealing sleeves; 7. a water outlet; 8. a communicating hole; 9. a seal ring; 10. a touch cover; 11. a flow-through hole; 12. a buffer cylinder; 13. a water through hole; 14. the first convex ring part; 15. a convex ring part II; 16. a filter screen; 17. connecting columns.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figure 1, the stop valve comprises a valve body 1 with a water inlet and a water outlet 7, a valve cover 2 arranged on the valve body 1, a valve rod 3 axially penetrating through the valve cover 2 and extending into the valve body 1, a handle fixedly connected with the valve rod 3 and used for rotating the valve rod 3, and a valve clack 4 arranged on the valve rod 3, wherein a sealing ring for enhancing tightness is arranged between the valve cover 2 and the valve body 1, the valve body 1 and the valve cover 2 are fixedly connected through a plurality of studs, a sealing filler for enhancing tightness is arranged between the joints of the valve rod 3 and the valve cover 2, a grease injection valve can be arranged at the position of the valve cover 2 opposite to the valve rod 3 and used for ensuring that the valve rod 3 does not leak and prolonging the service life of the valve rod 3, a valve port 5 for communicating the water inlet and the water outlet 7 in the valve body 1 is arranged in the valve body 1, a hollow sealing sleeve 6 for enhancing, the other end of the sealing sleeve 6 is abutted against the inner wall of a valve port 5 in the valve body 1 through a valve cover 2 to form a seal, a plurality of communicating holes 8 which are arranged oppositely in pairs and are communicated with the water outlet 7 in the sealing sleeve 6 are formed on the outer peripheral wall of the sealing sleeve 6 at the water outlet 7, the valve flap 4 is arranged in the sealing sleeve 6 and drives the valve flap 4 to move through a valve rod 3, the outer peripheral wall of the valve flap 4 is in sliding fit with the inner peripheral wall of the sealing sleeve 6, the lower end part of the valve flap 4 is provided with a sealing structure which is connected with the valve flap 4 and is abutted and matched with the valve port 5 to form a secondary seal, the sealing structure comprises a connecting post 17 connected with the valve flap 4 and an abutting cover 10 connected with the connecting post 17, the cross section of the sealing structure is in an inverted T shape, the outer, the inner wall of the valve body 1 at the valve port 5 is provided with an inner chamfer which is in contact fit with the outer peripheral wall of the contact cover 10, the inclination angle of this inner chamfer and the inclination phase-match of the cone in the conflict lid 10, the valve body 1 is located and is provided with its buffer structure who links firmly mutually and be used for slowing down the liquid flow rate on the inner wall of valve port 5 department, buffer structure includes vertical setting up in valve port 5 department and buffer tube 12 that links firmly mutually with valve body 1, seted up a plurality of rows of limbers 13 on the periphery wall of buffer tube 12, be provided with radial outside bellied flange portion one 14 on the periphery wall of buffer tube 12 upper end department, valve body 1 is located and is provided with radial inside protruding and with flange portion inconsistent complex flange portion two 15 on the inner wall in valve port 5, flange portion sets up in the below of the inner chamfer in valve port 5 department, flange portion two 15 links firmly through a plurality of double-screw bolt with flange portion one 14 mutually, the upper end opening part of valve body 12 is located and is provided with its filter screen 16 who links firmly and be.

In order to further detail, in order to improve the sealing performance of the joint, the sealing sleeve 6 axially protrudes downwards and is embedded into the sealing ring 9 in the valve body 1 on the end face of the valve port 5 where the inner wall is in contact and joint with the inner wall of the valve body 1, and the cross section of the sealing ring 9 is in the shape of two isosceles trapezoids which are symmetrically arranged.

As a preferable structure, the valve clack 4 is provided with an outer chamfer at the outer side of the upper end part.

As the preferred structure, the inner wall of the valve body 1 at the inner chamfer is provided with a plurality of circulation holes 11 which are convenient for liquid to flow and are distributed at intervals along the circumferential direction of the valve port 5.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A stop valve comprises a valve body (1) with a water inlet and a water outlet (7), a valve cover (2), a valve rod (3) and a valve clack (4), wherein a valve port (5) which enables the water inlet in the valve body (1) to be communicated with the water outlet (7) is arranged in the valve body (1), the stop valve is characterized in that a sealing sleeve (6) which is vertically arranged and used for enhancing internal sealing performance is arranged in the valve body (1), one end of the sealing sleeve (6) is abutted against the valve cover (2), the other end of the sealing sleeve (6) is abutted against the inner wall of the valve port (5) through the valve cover (2), a plurality of communicating holes (8) which enable the interior of the sealing sleeve (6) to be communicated with the water outlet (7) are formed in the peripheral wall of the sealing sleeve (6) at the water outlet (7), and the valve clack (4) is arranged, the outer circumferential wall of the valve clack (4) is in sliding fit with the inner circumferential wall of the sealing sleeve (6), a sealing structure which is connected with the valve clack (4) and is in butt fit with the valve port (5) is arranged at the lower end part of the valve clack (4), and a buffer structure which is fixedly connected with the valve clack and is used for slowing down the flow rate of liquid is arranged on the inner wall of the valve body (1) at the valve port (5).

2. The stop valve of claim 1, characterized in that the seal sleeve (6) has a seal ring (9) which is axially and downwardly protruded and embedded into the valve body (1) on the end surface abutting against and attached to the inner wall of the valve body (1), and the cross section of the seal ring (9) is in the shape of two isosceles trapezoids which are symmetrically arranged.

3. A stop valve according to claim 1, characterized in that the flap (4) is provided with an external chamfer on the outside of its upper end.

4. A stop valve according to claim 1, characterized in that the sealing structure comprises a connecting column (17) connected with the valve flap (4) and an abutting cover (10) connected with the connecting column (17), the outer diameter of the abutting cover (10) is a tapered cone, the inner wall of the valve body (1) at the valve port (5) is provided with an inner chamfer, and the inclination angle of the inner chamfer is matched with the inclination angle of the cone.

5. A stop valve according to claim 1, characterized in that the inner wall of the valve body (1) at the inner chamfer is provided with a plurality of through holes (11) for facilitating the liquid flow.

6. The stop valve according to claim 1, wherein the buffer structure comprises a buffer cylinder (12) vertically arranged at the valve port (5), a plurality of drainage holes (13) are formed in the outer peripheral wall of the buffer cylinder (12), a first protruding ring part (14) protruding radially outwards is arranged on the outer peripheral wall of the upper end of the buffer cylinder (12), a second protruding ring part (15) protruding radially inwards and matched with the first protruding ring part in an abutting mode is arranged on the inner wall of the valve body (1) positioned in the valve port (5), and a filter screen (16) fixedly connected with the buffer cylinder (12) and used for filtering impurities is arranged at the opening of the upper end of the buffer cylinder (12).