CN111075943A

CN111075943A - Valve gate

Info

Publication number: CN111075943A
Application number: CN202010117812.XA
Authority: CN
Inventors: 黄晓峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-04-28

Abstract

The invention relates to the field of valves. A valve comprises a valve body, a valve clack structure and a valve rod assembly driving the valve clack structure to move up and down, wherein in a medium flowing channel, a symmetrical partial circular inner wall is arranged inside the valve body, the bottom of the partial circular inner wall is connected with a sealing platform, and the sealing platform protrudes out of the bottom of the medium flowing channel; the lower end of the valve clack structure is a cylindrical part, more than 8 protruding sealing ribs are distributed on the side edge and the bottom of the cylindrical part, and the protruding sealing ribs, the partial circular inner wall and the sealing platform form a three-dimensional sealing structure. The valve adopts a novel valve clack sealing structure, and the valve body is simple in structure and small in flow resistance; the flow area is large; and a cut-off structure is adopted, the flow ratio is controllable, and the sealing is reliable. The valve has high practicability and better market popularization value.

Description

Valve gate

Technical Field

The invention relates to the field of valves.

Background

The valve is an important component in the field of pipelines and has the functions of adjusting and controlling the pipelines. The valves are various in types and commonly comprise stop valves, the stop valves are driven downwards through valve rods, pressure acting on valve clacks is exerted, the valve clacks are connected with sealing surfaces below, pipeline media are cut off, and therefore sealing is achieved. The stop valve structure is common in the prior art of stop valve with publication number CN 104006168A, the valve has a water inlet direction, a middle partition layer is arranged in the valve, and a water flowing hole matched with the sealing gasket is further arranged on the middle partition layer. The stop valve has the advantages of large difficulty in forging the internal structure, high casting mould and process cost, sand holes and low yield, and is generally produced by adopting a casting process. Similar patents also include "a stop valve" of publication number CN 207195692U, and the like.

In addition, the stop valve has two defects, one is that the flow capacity is small; secondly, the fluid medium flows in a zigzag manner in the valve body, so that the flow resistance is large and the hydraulic performance is poor.

Disclosure of Invention

Aiming at the stop valves in the prior art, the invention provides a novel valve, which improves the defects of the existing stop valves, and the valve body has a simple structure and is easy to manufacture; the flow direction of the medium is changed, and the hydraulic performance is improved; the flow rate is large.

In order to achieve the purpose, the invention adopts the following technical scheme:

a valve comprises a valve body, a valve clack structure which is matched with the valve body to realize sealing, and a valve rod assembly which drives the valve clack structure to move up and down, wherein the valve rod assembly comprises a valve cap which is fixedly connected with the valve body and limits the movement of the valve clack structure; the lower end of the valve clack structure is a cylindrical part, more than 8 convex sealing ribs are distributed on the side edge and the bottom of the cylindrical part, and the convex sealing ribs, the partial circular inner wall and the sealing platform form a three-dimensional sealing structure; an annular sealing band is also provided on the cylindrical body portion.

The invention can also adopt the technical scheme that:

the side edge of the convex sealing rib extends to the bottom and then extends to the opposite side edge to form a continuous U-shaped convex sealing rib.

The inner wall of the partial circle is contacted with more than two convex sealing ribs.

The sealing platform is a plane, and the bottom of the cylindrical part is also of a plane structure.

The sealing platform is of a groove arc structure, and the bottom of the cylindrical part is of a convex arc structure matched with the sealing platform.

The middle hole part arranged in the middle of the valve body is a complete cylindrical wall and is always contacted with the annular sealing belt.

The medium flowing channel in the valve body is a straight flow channel.

Compared with the prior art, the valve body is simple in structure and low in manufacturing cost; the fluid medium flows through the channel without bending, the flow resistance is small, and the flow is large; by adopting a cut-off structure, the controllable proportion of the flow is good, and the control is accurate; the valve has low opening and closing noise and reliable sealing. The product sealing structure is novel, the practicality is high, and the market promotion value is better.

Drawings

FIG. 1 is a schematic perspective view of a valve flap according to a first preferred embodiment;

FIG. 2 is a schematic perspective view of a valve body according to a first preferred embodiment;

FIG. 3 is a schematic view of a valve according to the first preferred embodiment in full section;

FIG. 4 is an exploded view of the valve of the first preferred embodiment;

fig. 5 is a schematic sectional view of the structure of the valve body of the second preferred embodiment.

Detailed Description

The valve of the present invention is further described with reference to the accompanying drawings.

As shown in fig. 1 to 4, a valve comprises a valve body 1, a valve clack structure 2 which is matched with the valve body 1 to realize sealing, and a valve rod assembly 3 which drives the valve clack structure 2 to move up and down; wherein, the valve rod component 3 comprises a valve cap 30 which is fixedly connected with the valve body 1 and limits the movement of the valve clack structure 2; in the medium flowing channel 4, a symmetrical partial circular inner wall 10 is arranged inside the valve body 1, the bottom of the partial circular inner wall 10 is connected with a sealing platform 11, and the sealing platform 11 protrudes out of the bottom of the medium flowing channel 4; the lower end of the valve clack structure 2 is generally a cylindrical part 20, more than 8 convex sealing ribs 21 are distributed on the side edge and the bottom of the cylindrical part 20, and the convex sealing ribs 21, the partial circular inner wall 10 and the sealing platform 11 form a three-dimensional sealing structure; an annular sealing band 22 is also provided on the cylindrical body portion 20.

In the valve of the present embodiment, the valve stem assembly 3 rotates in the valve bonnet 30, the hexagonal structure 23 on the upper portion of the valve flap structure 2 cooperates with the hexagonal structure 32 of the valve bonnet 30 for limiting, and when the screw 33 of the valve stem assembly 3 rotates, the screw drives the valve flap structure 2 to move downwards or upwards. The cylindrical part 20 of the lower end of the valve clack structure 2 is externally provided with a rubber sealing sleeve or integrally made of rubber, and comprises a convex sealing rib 21, so that the valve is small in opening and closing noise except for sealing. The raised sealing ribs 21 extend from the side edges to the bottom of the cylindrical body portion 20 and then to the opposite side edges to form continuous U-shaped raised sealing ribs 21. The number of the U-shaped raised sealing ribs 21 is 13 in this embodiment, and less than 7, the effect of the sealing contact is not ideal. The raised sealing rib 21 is focused at a concentration point 24 at the bottom of the cylindrical body portion 20.

Under the valve sealing state, the partial circular inner wall 10 is contacted with more than two convex sealing ribs 21 to form a plurality of seals, and the valve sealing reliability is high. The valve of the present application, preferably 3 to 4 raised sealing ribs 21, contact part of the circular inner wall 10 and the sealing land 11.

The sealing platform 11 of the valve body 1 is a plane, and the bottom of the cylindrical part 20 is also a plane structure, which are matched with each other to realize sealing. The sealing platform 11 protrudes at the bottom of the medium flowing channel 4, can realize the sealing with the convex sealing rib 21, and can not realize the effect by being recessed.

The middle hole part 12 arranged in the middle of the valve body 1 is a complete cylindrical wall and is always in contact with the annular sealing strip 22, the annular sealing strip 22 and the convex sealing rib 21 are of an integral structure, and the sealing performance of the upper part of the valve is kept by adopting the rubber material. Of course, multiple sealing arrangements may be provided, such as an O-ring 25 fitting seal in the illustrated embodiment.

In the valve of the present embodiment, the valve body 1 is straight, and the medium flowing channel 4 in the valve body 1 is a straight flow channel. The existing stop valve structure has the difference of water inlet end and water outlet end, and the valve of the application has no flow direction distinction. Compared with a stop valve, the valve body 1 is simple in structure and manufacture, low in cost, small in flow resistance and large in flow, and fluid media flow through a channel without bending.

The valve clack structure 2 of the valve moves upwards, the larger the opened medium flows through the channel 4, the opening height is in direct proportion to the flow area, and compared with conventional valves such as stop valves and ball valves, the flow proportion is controllable.

Fig. 5 is a schematic sectional view of a valve body structure of a second preferred embodiment, wherein a symmetrical partial circular inner wall 10 is arranged inside a valve body 1, the bottom of the partial circular inner wall 10 is connected with a sealing platform 11, and the sealing platform 11 protrudes out of the bottom of a medium flowing channel; the sealing platform 11 is a groove arc structure, and the bottom of the cylindrical part 20 is a convex arc structure matched with the sealing platform 11. The central hole part 12 arranged in the middle of the valve body 1 is sealed with an annular sealing belt 22.

The valve adopts a novel valve clack sealing structure, and the valve body has a simple structure and low manufacturing cost; the fluid medium flows through the channel directly, and the flow resistance is small; the flow area is large; a cut-off structure is adopted, the flow ratio is well controllable, and the control is accurate; the valve has low opening and closing noise and reliable sealing. The valve has high practicability and better market popularization value.

Claims

1. The utility model provides a valve, includes a valve body (1), one realizes sealed valve clack structure (2) with valve body (1) cooperation to and drive valve rod assembly (3) of valve clack structure (2) up-and-down motion, wherein valve rod assembly (3) include one with valve body (1) be connected fixedly, and valve cap (30) of spacing valve clack structure (2) motion, its characterized in that: in the medium flowing channel (4), a symmetrical partial circular inner wall (10) is arranged inside the valve body (1), the bottom of the partial circular inner wall (10) is connected with a sealing platform (11), and the sealing platform (11) protrudes out of the bottom of the medium flowing channel (4);

the lower end of the valve clack structure (2) is generally a cylindrical part (20), more than 8 convex sealing ribs (21) are distributed on the side edge and the bottom of the cylindrical part (20), and the convex sealing ribs (21), the partial circular inner wall (10) and the sealing platform (11) form a three-dimensional sealing structure; an annular sealing band (22) is also provided on the cylindrical body portion (20).

2. A valve according to claim 1, wherein: the convex sealing ribs (21) extend from the side edges of the cylindrical body part (20) to the bottom and then extend to the opposite side edges to form continuous U-shaped convex sealing ribs (21).

3. A valve according to claim 1, wherein: the partial circular inner wall (10) is contacted with more than two convex sealing ribs (21).

4. A valve according to claim 1, wherein: the sealing platform (11) is a plane, and the bottom of the cylindrical part (20) is also of a plane structure.

5. A valve according to claim 1, wherein: the sealing platform (11) is of a groove arc structure, and the bottom of the cylindrical part (20) is of a convex arc structure matched with the sealing platform (11).

6. A valve according to claim 1, wherein: the middle hole part (12) arranged in the middle of the valve body (1) is a complete cylindrical wall and is always contacted with the annular sealing belt (22).

7. A valve according to claim 1 or 6, wherein: the medium flowing channel (4) in the valve body (1) is a straight flow channel.