CN212804341U

CN212804341U - Ball valve with enhancement mode seal assembly

Info

Publication number: CN212804341U
Application number: CN202021179144.5U
Authority: CN
Inventors: 林保义
Original assignee: Suzhou Getep Fluid Equipment Co ltd
Current assignee: Suzhou Getep Fluid Equipment Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-03-26
Anticipated expiration: 2030-06-23

Abstract

A ball valve with an enhanced sealing assembly belongs to the technical field of high-performance, high-reliability, long-service-life sealing, transmission, fastening, hydraulic and pneumatic products or element manufacturing, and comprises a handle, a valve rod, a valve body, a metal valve seat, a valve cover, a ball valve core and a sealing assembly; the sealing assembly comprises a fixing ring, a bottom arc-shaped sealing ring and a top arc-shaped sealing ring, the bottom arc-shaped sealing ring and the top arc-shaped sealing ring are arranged in a gourd shape, and the circular sealing rings are arranged inside the bottom arc-shaped sealing ring and the top arc-shaped sealing ring. Ball valve with enhancement mode seal assembly, through the seal assembly who sets up between valve rod and valve gap to and the seal structure that sets up between metal disk seat and ball valve case, reach double seal, also can guarantee the use reliability and stability of ball valve, thereby can improve flow control's precision greatly, reach accurate control flow system, the stability in use is good, the suitability is strong and the practicality is good.

Description

Ball valve with enhancement mode seal assembly

Technical Field

The utility model belongs to the technical field of high performance, high reliability, long-life are sealed, transmission, fastening, hydraulic pressure, pneumatic type product or component are made, specifically, relate to a ball valve with enhancement mode seal assembly.

Background

Ball valve, the open-close piece (ball) is driven by the valve rod and rotates around the axis of the ball valve. The hard seal V-shaped ball valve can also be used for regulating and controlling fluid, wherein a V-shaped ball core of the hard seal V-shaped ball valve and a metal valve seat of the build-up welding hard alloy have strong shearing force, and the hard seal V-shaped ball valve is particularly suitable for media containing fibers, tiny solid particles and the like. The multi-way ball valve can flexibly control the confluence, the diversion and the switching of the flow direction of the medium on the pipeline, and can close any channel to connect the other two channels. The valve of this type should be generally installed horizontally in the pipeline. The ball valve is divided into: pneumatic ball valves, electric ball valves, manual ball valves.

The sealing structure of the ball valve is a key component which can ensure stable use of the ball valve, and the good sealing structure can not only prolong the service life of the ball valve, but also improve the overall quality of products.

However, the existing ball valve sealing structure has many defects, the ball valve is in a long-time use process, the sealing performance between the ball core and the valve body is poor, so that the water leakage phenomenon often occurs inside the ball valve, a large amount of water resources are wasted, the cost is improved, the ball valve is not suitable for popularization and use, the resistance of the valve rod and the connecting block is increased, people need to use a large force to open the ball valve, the valve rod is easy to damage, the maintenance cost is increased, and the use of people is inconvenient. Therefore, the improvement of the design of the ball valve sealing structure is needed to be continuously carried out, and the problem of the traditional ball valve sealing structure is solved.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a ball valve with enhancement mode seal assembly has solved the seal structure of ball valve among the prior art and has had the defect, causes the problem that ball valve life is low.

The technical scheme is as follows: the utility model provides a ball valve with enhancement mode seal assembly, including handle, valve rod, valve body, metal valve seat, valve gap, ball valve case and seal assembly, valve gap and valve body fixed connection, the ball valve case sets up in the valve body, one end of valve rod can pass the valve gap and be connected with the ball valve case, and the tip that the valve rod lies in the valve body is connected with the handle, the metal valve seat sets up in the valve body, the ball valve case is sealed with the metal valve seat, the seal assembly sets up and seals between valve rod and valve gap, the valve gap is close to and is equipped with recess one on the tip of valve body, the seal assembly sets up in recess one; wherein, seal assembly includes solid fixed ring, bottom arc sealing washer and top arc sealing washer, gu fixed ring and top arc sealing washer's outer wall fixed connection, bottom arc sealing washer is fixed to be set up on top arc sealing washer's lower tip to bottom arc sealing washer's sectional area is less than top arc sealing washer's sectional area, bottom arc sealing washer and top arc sealing washer are calabash shape setting, bottom arc sealing washer and top arc sealing washer's inside is equipped with circular seal ring, circular seal ring cover is established on the outer wall of valve rod to circular seal ring's last lower tip respectively with top arc sealing washer and bottom arc sealing washer fixed connection, be equipped with recess two on the inner wall of recess one, the cross-section of recess two is the annular, gu fixed ring sets up in recess two.

Further, foretell ball valve with enhancement mode seal assembly, be equipped with cavity one between circular seal circle and the bottom arc seal circle, be equipped with cavity two between circular seal circle and the top arc seal circle, cavity one and cavity two intercommunication, circular seal circle is located and is equipped with a set of zigzag silica gel strengthening rib on the outer wall of cavity one and cavity two.

Further, according to the ball valve with the enhanced sealing assembly, the arc bending part is arranged between the bottom arc-shaped sealing ring and the top arc-shaped sealing ring, and the arc-shaped groove III is formed in the end face, far away from the bottom arc-shaped sealing ring, of the top arc-shaped sealing ring.

Further, foretell ball valve with enhancement mode seal assembly, be equipped with pressure ring and sealing washer one in the recess one, pressure ring and sealing washer one are all established on the valve rod, the lower tip of pressure ring is located arc recess three to the outer wall of pressure ring upper end and the inner wall laminating of recess one, sealing washer one is located directly over the pressure ring, and the outer wall of sealing washer one and the inner wall laminating of recess one.

Further, a second sealing ring is arranged between the valve body and the valve cover of the ball valve with the enhanced sealing assembly.

Furthermore, according to the ball valve with the enhanced sealing assembly, a first sealing bush is arranged between the valve rod and the valve body and between the valve rod and the metal valve seat, and a second sealing bush is arranged between the lower end of the valve core of the ball valve and the valve body.

Furthermore, according to the ball valve with the enhanced sealing assembly, the center of the valve body is provided with the third cavity, the metal valve seat is arranged in the third cavity, the opposite surfaces of the inner walls of the third cavity are respectively provided with the third group of grooves, the third grooves are internally provided with the first spring, the end part of the first spring, which extends out of the third grooves, abuts against the outer wall of the metal valve seat, and the third sealing ring and the fourth sealing ring are arranged between the metal valve seat and the valve body.

Furthermore, in the ball valve with the enhanced sealing assembly, a wear-resistant bushing is arranged on the inner wall of the metal valve seat, and the valve core of the ball valve is sealed with the wear-resistant bushing.

Furthermore, in the ball valve with the enhanced sealing assembly, the two ends of the valve body are respectively provided with the first connecting flange and the second connecting flange.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: ball valve with enhancement mode seal assembly, through the seal assembly who sets up between valve rod and valve gap to and the seal structure that sets up between metal disk seat and ball valve case, reach double seal, also can guarantee the use reliability and stability of ball valve, thereby can improve flow control's precision greatly, reach accurate control flow system, the stability in use is good, the suitability is strong and the practicality is good.

Drawings

FIG. 1 is a schematic structural view of a ball valve having an enhanced seal assembly according to the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a schematic structural diagram of the sealing assembly according to the present invention;

fig. 4 is a partially enlarged view of the point B in fig. 1 according to the present invention.

In the figure: the valve comprises a handle 1, a valve rod 2, a valve body 3, a cavity III 31, a groove III 32, a spring I33, a sealing ring III 34, a sealing ring IV 35, a connecting flange I36, a connecting flange II 37, a metal valve seat 4, a wear-resistant bushing 41, a valve cover 5, a groove I51, a groove II 52, a pressure ring 53, a sealing ring I54, a ball valve core 6, a sealing assembly 7, a fixing ring 71, a bottom arc-shaped sealing ring 72, a top arc-shaped sealing ring 73, a circular sealing ring 74, a cavity I75, a cavity II 76, a silica gel reinforcing rib 77, an arc-shaped bent part 78, an arc-shaped groove III 79, a sealing ring II 8, a sealing bushing.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example one

The ball valve with the enhanced sealing assembly shown in fig. 1 comprises a handle 1, a valve rod 2, a valve body 3, a metal valve seat 4, a valve cover 5, a ball valve core 6 and a sealing assembly 7, wherein the valve cover 5 is fixedly connected with the valve body 3, the ball valve core 6 is arranged in the valve body 3, one end of the valve rod 2 can pass through the valve cover 5 to be connected with the ball valve core 6, the end part, located outside the valve body 3, of the valve rod 2 is connected with the handle 1, the metal valve seat 4 is arranged in the valve body 3, the ball valve core 6 is sealed with the metal valve seat 4, the sealing assembly 7 is arranged between the valve rod 2 and the valve cover 5 for sealing, a first groove 51 is arranged at the end part, close to the valve body 3, of the valve cover 5, the sealing assembly 7 is arranged in the first groove 51, and a first connecting flange 36 and a; wherein, as shown in fig. 2 and 3, the sealing assembly 7 includes a fixing ring 71, a bottom arc-shaped sealing ring 72 and a top arc-shaped sealing ring 73, the fixing ring 71 is fixedly connected with the outer wall of the top arc-shaped sealing ring 73, the bottom arc-shaped sealing ring 72 is fixedly arranged on the lower end portion of the top arc-shaped sealing ring 73, and the sectional area of the bottom arc-shaped sealing ring 72 is smaller than that of the top arc-shaped sealing ring 73, the bottom arc-shaped sealing ring 72 and the top arc-shaped sealing ring 73 are arranged in a gourd shape, a circular sealing ring 74 is arranged inside the bottom arc-shaped sealing ring 72 and the top arc-shaped sealing ring 73, the circular sealing ring 74 is sleeved on the outer wall of the valve rod 2, and the upper and lower end portions of the circular sealing ring 74 are respectively fixedly connected with the top arc-shaped sealing ring 73, the fixing ring 71 is arranged in the second groove 52.

In addition, be equipped with cavity one 75 between circular seal ring 74 and the bottom arc sealing ring 72, be equipped with cavity two 76 between circular seal ring 74 and the top arc sealing ring 73, cavity one 75 and cavity two 76 intercommunication, circular seal ring 74 is located and is equipped with a set of zigzag silica gel strengthening rib 77 on the outer wall of cavity one 75 and cavity two 76.

In addition, an arc bending part 78 is arranged between the bottom arc-shaped sealing ring 72 and the top arc-shaped sealing ring 73, and an arc groove three 79 is arranged on the end face, far away from the bottom arc-shaped sealing ring 72, of the top arc-shaped sealing ring 73.

Example two

Based on the structure of the embodiment, a pressure ring 53 and a first sealing ring 54 are arranged in the first groove 51, the pressure ring 53 and the first sealing ring 54 are both sleeved on the valve rod 2, the lower end part of the pressure ring 53 is located in the third arc-shaped groove 79, the outer wall of the upper end of the pressure ring 53 is attached to the inner wall of the first groove 51, the first sealing ring 54 is located right above the pressure ring 53, and the outer wall of the first sealing ring 54 is attached to the inner wall of the first groove 51.

And a second sealing ring 8 is arranged between the valve body 3 and the valve cover 5. A first sealing bush 81 is arranged between the valve rod 2 and the valve body 3 and the metal valve seat 4, and a second sealing bush 82 is arranged between the lower end part of the ball valve core 6 and the valve body 3.

In addition, as shown in fig. 4, a third cavity 31 is arranged at the center of the valve body 3, the metal valve seat 4 is arranged in the third cavity 31, a third group of grooves 32 are respectively arranged on the opposite surfaces of the inner walls of the third cavity 31, a first spring 33 is arranged in the third groove 32, the end part of the first spring 33 extending out of the third groove 32 abuts against the outer wall of the metal valve seat 4, and a third sealing ring 34 and a fourth sealing ring 35 are arranged between the metal valve seat 4 and the valve body 3. And a wear-resistant bushing 41 is arranged on the inner wall of the metal valve seat 4, and the ball valve core 6 is sealed with the wear-resistant bushing 41.

The utility model discloses a bottom arc seal 72 and top arc seal 73 are the shape setting of the bottle gourd that falls, can form good sealedly between valve rod 2 and valve gap 5.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. A ball valve having an enhanced seal assembly, characterized by: comprises a handle (1), a valve rod (2), a valve body (3), a metal valve seat (4), a valve cover (5), a ball valve core (6) and a sealing component (7), the valve cover (5) is fixedly connected with the valve body (3), the ball valve core (6) is arranged in the valve body (3), one end of the valve rod (2) can pass through the valve cover (5) to be connected with the ball valve core (6), and the end part of the valve rod (2) positioned outside the valve body (3) is connected with the handle (1), the metal valve seat (4) is arranged in the valve body (3), the ball valve core (6) is sealed with the metal valve seat (4), the sealing component (7) is arranged between the valve rod (2) and the valve cover (5) for sealing, a first groove (51) is formed in the end part, close to the valve body (3), of the valve cover (5), and the sealing assembly (7) is arranged in the first groove (51);

wherein, the sealing component (7) comprises a fixing ring (71), a bottom arc-shaped sealing ring (72) and a top arc-shaped sealing ring (73), the fixing ring (71) is fixedly connected with the outer wall of the top arc-shaped sealing ring (73), the bottom arc-shaped sealing ring (72) is fixedly arranged on the lower end part of the top arc-shaped sealing ring (73), the sectional area of the bottom arc-shaped sealing ring (72) is smaller than that of the top arc-shaped sealing ring (73), the bottom arc-shaped sealing ring (72) and the top arc-shaped sealing ring (73) are arranged in a gourd shape, the circular sealing ring (74) is arranged inside the bottom arc-shaped sealing ring (72) and the top arc-shaped sealing ring (73), the circular sealing ring (74) is sleeved on the outer wall of the valve rod (2), and the upper end part and the lower end part of the circular sealing ring (74) are, and a second groove (52) is formed in the inner wall of the first groove (51), the section of the second groove (52) is annular, and the fixing ring (71) is arranged in the second groove (52).

2. The ball valve having an enhanced sealing assembly of claim 1, wherein: be equipped with cavity one (75) between circular seal ring (74) and bottom arc seal ring (72), be equipped with cavity two (76) between circular seal ring (74) and top arc seal ring (73), cavity one (75) and cavity two (76) intercommunication, circular seal ring (74) are located and are equipped with a set of zigzag silica gel strengthening rib (77) on the outer wall of cavity one (75) and cavity two (76).

3. The ball valve having an enhanced sealing assembly of claim 2, wherein: an arc bending part (78) is arranged between the bottom arc-shaped sealing ring (72) and the top arc-shaped sealing ring (73), and an arc-shaped groove III (79) is formed in the end face, far away from the bottom arc-shaped sealing ring (72), of the top arc-shaped sealing ring (73).

4. The ball valve having an enhanced sealing assembly of claim 3, wherein: be equipped with pressure ring (53) and sealing washer (54) in recess (51), pressure ring (53) and sealing washer (54) all overlap and establish on valve rod (2), the lower tip of pressure ring (53) is located arc recess three (79) to the outer wall of pressure ring (53) upper end and the inner wall laminating of recess (51), the sealing washer (54) be located directly over pressure ring (53), and the outer wall laminating of sealing washer (54) and the inner wall of recess (51).

5. The ball valve having an enhanced sealing assembly of claim 1, wherein: and a second sealing ring (8) is arranged between the valve body (3) and the valve cover (5).

6. The ball valve having an enhanced sealing assembly of claim 1, wherein: a first sealing bush (81) is arranged between the valve rod (2) and the valve body (3) and the metal valve seat (4), and a second sealing bush (82) is arranged between the lower end of the ball valve core (6) and the valve body (3).

7. The ball valve having an enhanced sealing assembly of claim 1, wherein: the central point of valve body (3) puts and is equipped with cavity three (31), metal valve seat (4) set up in cavity three (31), be equipped with a set of recess three (32) on the opposite face of the inner wall of cavity three (31) respectively, be equipped with spring one (33) in recess three (32), spring one (33) stretch out the tip of recess three (32) and the outer wall of metal valve seat (4) and offset, be equipped with between metal valve seat (4) and valve body (3) three (34) of sealing washer and four (35) of sealing washer.

8. The ball valve having an enhanced sealing assembly of claim 7, wherein: and a wear-resistant bushing (41) is arranged on the inner wall of the metal valve seat (4), and the ball valve core (6) is sealed with the wear-resistant bushing (41).

9. The ball valve having an enhanced sealing assembly of claim 1, wherein: and a first connecting flange (36) and a second connecting flange (37) are respectively arranged at two ends of the valve body (3).