CN220770183U

CN220770183U - Ball valve

Info

Publication number: CN220770183U
Application number: CN202322619265.7U
Authority: CN
Inventors: 李骏; 刘快乐; 林陈翔; 陈锐洋; 余朝中; 陈雷; 张朝; 林慧; 陈小林
Original assignee: Zhejiang Linuo Flow Control Technology Co ltd
Current assignee: Zhejiang Linuo Flow Control Technology Co ltd
Priority date: 2023-09-26
Filing date: 2023-09-26
Publication date: 2024-04-12
Anticipated expiration: 2033-09-26

Abstract

The utility model relates to a ball valve, wherein a ball body is arranged in a circular valve cavity of a valve body, valve covers are arranged on two sides of the ball body, flange parts of the valve covers are matched and matched in ports of the circular valve cavity, the valve covers and the valve body relatively float axially, an annular gasket is arranged on the outer axial side of a sealing ring, the sealing ring and the annular gasket are arranged between the valve body and the valve covers, multiple open rings on the circular valve cavity are arranged on the outer axial side of the flange parts, the annular gasket is arranged on the inner axial side of the multiple open rings, end covers are respectively arranged at the front end and the rear end of the valve body, and annular supporting parts of the end covers are matched and supported by the multiple open rings. The valve cover can relatively float when the medium in the direction of the sphere applies pressure, so that the sealing ring is matched with the annular gasket to ensure the sealing effect; the multi-ring-opening is matched for stopping and limiting, so that the sealing ring and the annular gasket can be kept between the valve body and the valve cover, and the valve cover can be limited to prevent separation; the multiple open rings are convenient to assemble in the annular groove on the inner wall of the circular valve cavity, and are supported by the annular supporting part of the end cover in a matched manner to avoid the multiple open rings from separating.

Description

Ball valve

Technical Field

The utility model relates to a valve, in particular to a ball valve.

Background

The valve caps at two ends of the existing fixed ball valve are connected to the valve body in a matched manner by a stud and a nut, and the stud is pulled and deformed by the axial pulling force of a pipeline to generate the phenomena of valve cap loosening, valve leakage and the like; the sealing is mainly performed through the matching locking of the nut and the stud, the nut can loosen in the long-term use process, the nut can back up, the sealing leakage is easy to occur, and the nut is more easy to loosen and the sealing effect is invalid in a high-temperature environment; in addition, the nuts and the studs required by the mode are required to be arranged at a plurality of positions, and the used specifications are relatively large (large in size, heavy in weight and high in cost), so that enough pretightening force can be ensured to uniformly press the sealing gasket, and sealing reliability is ensured. The larger the bolt load is, the thicker the flange is, so that the strength of the flange can be ensured, the bending moment can be reduced, and the cost and the weight are increased.

Disclosure of Invention

In view of the technical problems in the background art, the technical problems solved by the utility model aim at providing the ball valve with relatively good sealing effect of the connecting structure of the valve cover and the valve body, and relatively higher sealing stability and durability by means of stud and nut connection.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a ball valve, includes the valve body, has circular valve pocket in the valve body, and the front and back end of valve body sets up the valve gap respectively, is equipped with the spheroid in the circular valve pocket, and the valve gap is located spheroidal both sides, its characterized in that: the end of the valve cover is provided with a flange part, the flange part is matched and arranged in a port of a circular valve cavity of the valve body, the valve cover and the valve body are in relative axial floating fit, the axial outer end of an outer ring of the flange part is provided with an annular concave table, a sealing ring and an annular pad are arranged on the annular concave table, the annular pad is arranged on the axial outer side of the sealing ring, the sealing ring and the annular pad are arranged between the valve body and the valve cover, the inner wall of the circular valve cavity is also provided with an annular groove, a plurality of open rings are arranged on the annular groove and are positioned on the axial outer side of the flange part, the annular pad is positioned on the axial inner side of the plurality of open rings, the front end and the rear end of the valve body are respectively provided with an end cover, the end cover is provided with an annular supporting part, and the outer ring of the annular supporting part is matched and supported and sleeved on the inner ring of the plurality of open rings.

The following various optimization or supplementary explanation can be performed on the above technical solutions, respectively.

For example, the inner ring of the annular supporting part is matched with the supporting sleeve to be arranged on the outer ring of the valve cover, and the valve cover is axially in floating fit relative to the annular supporting part.

Wherein, the multiple open loops are contacted and matched with the annular pad.

For another example, end caps are attached to the front and rear end surfaces of the valve body by fasteners.

In addition, the annular gasket is provided with a first sealing matching surface, the sealing ring is provided with a second sealing matching surface, the first sealing matching surface and the second sealing matching surface are arranged in opposite directions, and an angle difference is reserved between the first sealing matching surface and the second sealing matching surface.

The ball valve has the beneficial effects that in the ball valve, the valve cover can relatively float when the medium in the ball direction presses, so that the sealing ring is matched with the annular gasket to ensure the sealing effect, and the valve cover at the front end and the rear end of the ball valve is prevented from adopting a stud nut connection mode; the multi-ring-opening matching is used for stopping and limiting, so that the sealing ring and the annular gasket can be kept between the valve body and the valve cover, and the valve cover can be limited to prevent separation; in addition, the multiple open rings are convenient to assemble in the annular groove on the inner wall of the circular valve cavity, the multiple open rings are supported by the annular supporting part of the end cover in a matched manner to avoid separation, the installation requirement of the end cover on a fastener (such as a bolt and the like) is low, the cost is relatively low, and the weight is relatively light. Thus, the present utility model is a substantial feature and improvement over the prior art.

Drawings

The details and working principles of the embodiments and examples of the present utility model are described below with reference to the drawings.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is an enlarged view of a in fig. 1.

In the figure: 1. a valve body; 2. a circular valve cavity; 3. a valve cover; 4. a sphere; 5. a flange portion; 6. an annular concave table; 7. a seal ring; 8. an annular pad; 9. an annular groove; 10. multiple open loops; 11. an end cap; 12. an annular support portion; 13. a fastener; 14. an upper cover; 15. a valve stem; 16. and (3) filling.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some, but not all, embodiments of the present utility model, and that all other embodiments obtained by persons of ordinary skill in the art without making inventive efforts are within the scope of this utility model.

Referring to the drawings, in the embodiment of the present embodiment, a ball valve includes a valve body 1, a circular valve cavity 2 is provided in the valve body 1, valve covers 3 are respectively provided at front and rear ends of the valve body 1, a ball 4 is provided in the circular valve cavity 2, the valve covers 3 are located at two sides of the ball 4, and a valve seat is provided on the valve cover 3 to be sealed with the ball 4 in a matching manner. In addition, the valve body 1 is further connected with an upper cover 14 for mounting a valve rod 15, a filler 16 and the like, wherein the upper cover 14 can be provided with an elongated cover body with a radiating fin structure so as to improve the high-temperature radiating effect.

In this embodiment, the connection structure between the valve cover 3 and the valve body 1 is optimized, so as to improve the sealing effect, stability and durability of the seal, and avoid the problems of stud deformation, more number, larger weight and the like caused by stud and nut connection.

The end of the valve cover 3 is provided with a flange part 5, the flange part 5 is matched and arranged in a port of the circular valve cavity 2 of the valve body 1, the valve cover 3 is in relative axial floating fit with the valve body 1, the valve cover 3 can axially move in the circular valve cavity 2, and the stroke is relatively small to form a floating valve cover 3.

Wherein the outer ring of the flange part 5 is provided with an annular concave table 6, the annular concave table 6 is oppositely arranged at the axial outer end of the outer ring of the flange part 5, and the axial inner end faces the middle sphere 4. The annular concave table 6 is provided with a combined structure of a sealing ring 7 and an annular pad 8, the annular pad 8 is arranged on the outer side of the sealing ring 7 in the axial direction, the inner side of the axial direction faces the middle ball 4, the sealing ring 7 and the annular pad 8 are positioned between the valve body 1 and the valve cover 3, and the sealing ring 7 and the annular pad 8 are clamped and limited between the valve body 1 and the valve cover 3. The sealing ring 7 and the annular gasket 8 will cooperate to seal between the valve body 1 and the bonnet 3.

In addition, still be equipped with ring channel 9 on the inner wall of circular valve pocket 2, install many ring-opening 10 on the ring channel 9, can match the outer lane tip of many ring-opening 10 and pack into ring channel 9, many ring-opening 10 removable a plurality of ring-opening units (i.e. fan ring unit), the quantity of ring-opening unit can set up according to the demand, and the angle also sets up according to the demand, and many ring-opening 10 structure is convenient for assemble in ring channel 9, and holding power, holding strength can satisfy the pressure demand. The multiple open ring 10 is located axially outside the flange portion 5, the annular gasket 8 is located axially inside the multiple open ring 10, the multiple open ring 10 can limit the axially outside of the annular gasket 8, and the seal ring 7 and the annular gasket 8 can be held between the valve body 1 and the valve cover 3. The front end and the rear end of the valve body 1 are respectively provided with an end cover 11, the end cover 11 (the main body is of an annular sleeve structure) is provided with an annular supporting part 12, and the outer ring of the annular supporting part 12 is matched with the inner ring of the multi-ring-opening 10 in a supporting sleeve manner, so that the multi-ring-opening 10 arranged on the annular groove 9 on the inner wall of the circular valve cavity 2 can be kept not to be separated; the multi-open ring 10 utilizes the annular groove 9 to limit the axial position, the sealing ring 7 and the annular gasket 8 are kept between the valve body 1 and the valve cover 3, the valve cover 3 can be limited to prevent separation, the multi-open ring 10 is supported by the annular groove 9 in axial stress, the end cover 11 only needs to be supported at the inner ring of the multi-open ring 10, the end cover 11 does not have excessive axial stress, and the requirement on the connection mode (such as a fastener 13) of the end cover 11 and the valve body 1 is low (the number requirement and the specification requirement).

Under the action of the internal pressure (the side of the ball 4 is pressed), the valve cover 3 floats to axially move, the sealing ring 7 and the annular gasket 8 are pressed more tightly along with the increase of the pressure due to the backstop limiting action of the multi-ring 10, and good sealing is always kept.

In the ball valve, the valve body 1 and the valve cover 3 at the front end and the rear end are prevented from adopting a stud nut connection mode, the valve cover 3 in the ball valve can relatively float when a medium is pressed in the direction of a ball 4, so that the sealing ring 7 and the annular gasket 8 are matched to ensure a sealing effect, the multi-ring 10 is matched to perform backstop limiting, the sealing ring 7 and the annular gasket 8 can be kept between the valve body 1 and the valve cover 3, and the valve cover 3 can be limited to prevent separation; in addition, the multi-ring-opening 10 is convenient to be assembled in the annular groove 9 of the inner wall of the circular valve cavity, the multi-ring-opening 10 is prevented from being separated by the annular supporting part 12 of the end cover 11 in a matched mode, the installation requirement on a fastener 13 (such as a bolt and the like) of the end cover 11 is low, the cost is low, and the weight is light.

The following optimizations or further description can be made on the basis of the above embodiments, respectively.

For example, the inner ring of the annular supporting portion 12 is matched with the outer ring of the valve cover 3, the annular supporting portion 12 of the end cover 11 can also support the valve cover 3, further support the valve cover 3, and ensure that the valve cover 3 is more stable when axially floating, and the valve cover 3 is axially in floating fit relative to the annular supporting portion 12.

In addition, many open-loops 10 and the contact cooperation of annular pad 8, many open-loops 10 and the contact of annular pad 8 can interact to can be with being located sealing ring 7 and annular pad 8 pressurized between valve body 1 and the valve gap 3, sealing effect is more.

Wherein, the end cover 11 can be connected to the front and rear end surfaces of the valve body 1 through fasteners 13 (such as bolts and the like), the number of the fasteners 13 is not needed to be large, the specification is not needed to be large, and the cost and the weight are relatively low.

In addition, the annular gasket 8 has a first sealing mating surface, the sealing ring 7 has a second sealing mating surface, the first sealing mating surface and the second sealing mating surface are disposed opposite to each other (i.e., disposed face to face), an angle difference (for example, an angle difference of 2-4 degrees) is left between the first sealing mating surface and the second sealing mating surface, which is not shown in the figure, so that a corresponding wedge-shaped sealing structure is formed, and the tighter the sealing effect is when the sealing ring is pressed.

Claims

1. The utility model provides a ball valve, including valve body (1), have circular valve pocket (2) in valve body (1), the front and back end of valve body (1) sets up valve gap (3) respectively, is equipped with spheroid (4) in circular valve pocket (2), and valve gap (3) are located spheroidal both sides, its characterized in that:

the end part of the valve cover (3) is provided with a flange part (5), the flange part (5) is matched and arranged in the port of the circular valve cavity (2) of the valve body (1), the valve cover (3) is in relative axial floating fit with the valve body (1),

an annular concave table (6) is arranged at the axially outer end of the outer ring of the flange part (5), a sealing ring (7) and an annular pad (8) are arranged on the annular concave table (6), the annular pad (8) is arranged at the axially outer side of the sealing ring (7), the sealing ring (7) and the annular pad (8) are positioned between the valve body (1) and the valve cover (3),

an annular groove (9) is also arranged on the inner wall of the circular valve cavity (2), a plurality of open rings (10) are arranged on the annular groove (9), the open rings (10) are positioned on the outer axial side of the flange part (5), the annular pad (8) is positioned on the inner axial side of the open rings (10),

the front end and the rear end of the valve body (1) are respectively provided with an end cover (11), the end covers (11) are provided with annular supporting parts (12), and the outer rings of the annular supporting parts (12) are matched and supported and sleeved on the inner rings of the multi-ring-opening rings (10).

2. A ball valve as defined in claim 1, wherein: the inner ring of the annular supporting part (12) is matched with the outer ring of the valve cover (3), and the valve cover (3) is axially in floating fit relative to the annular supporting part (12).

3. A ball valve as defined in claim 1, wherein: the multi-ring (10) is in contact fit with the annular pad (8).

4. A ball valve as defined in claim 1, wherein: the end covers (11) are connected to the front end face and the rear end face of the valve body (1) through fasteners (13).

5. A ball valve as defined in claim 1, wherein: the annular gasket (8) is provided with a first sealing matching surface, the sealing ring (7) is provided with a second sealing matching surface, the first sealing matching surface and the second sealing matching surface are arranged in opposite directions, and an angle difference is reserved between the first sealing matching surface and the second sealing matching surface.