CN217081509U

CN217081509U - Metal sealing fixed ball valve

Info

Publication number: CN217081509U
Application number: CN202220884127.4U
Authority: CN
Inventors: 周剑; 徐继友; 尹清清; 李修库; 李博
Original assignee: Dagao Petrochemical Technology Co ltd
Current assignee: Taihong Valve Technology Co ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-07-29
Anticipated expiration: 2032-04-13

Abstract

The utility model discloses a metal seal fixed ball valve relates to the fixed ball valve field, solves the problem that the disk seat can't adapt to abominable operating mode such as muddy, bonding. It is including having the valve seat subassembly, spheroid and valve body, the valve seat subassembly is including having the valve seat body, a spring, Y type spring holder and slide, the front end of spring supports to press on the valve seat body, spring groove has been seted up in the front end of Y type spring holder, the tank bottom in spring groove supports to press on the rear end of spring and the cell wall in spring groove is located the periphery side of spring, the rear end of Y type spring holder has the boss, the boss inserts and forms the cooperation of sliding in the slide, the slide supports to press on the valve body inner wall, the periphery of boss, between slide and the valve body inner wall and the interior week of boss, install first sealing member between slide and the valve seat body respectively. Effectively prevent dust or tiny particle entering seam crossing and disturbing the normal effect of spring, avoid the spring inefficacy and the disk seat card that leads to dies the leakage phenomenon, be applicable to abominable operating modes such as muddy, bonding.

Description

Metal sealing fixed ball valve

Technical Field

The utility model belongs to the technical field of fixed ball valve and specifically relates to a metal seal fixed ball valve.

Background

The fixed ball valve is a new generation high-performance ball valve, is suitable for long-distance pipeline and general industrial pipeline, and its strength, safety and resistance to harsh environment are specially considered in the design process, so that it is applicable to various corrosive and non-corrosive media. However, in turbid or bonded media, the working conditions are harsh and harsh, the dust-proof and particle-proof design of a common valve seat cannot be adapted, tiny particles or dust of the media enter or accumulate in the valve seat, the spring is easy to lose efficacy, and the valve seat is blocked and leaked.

Disclosure of Invention

The utility model aims at: in order to overcome the defect of the prior art, the utility model provides a metal seal fixes ball valve solves the problem that the disk seat can't adapt to abominable operating mode such as muddy, bonding.

The technical scheme of the utility model: including having the valve seat subassembly, spheroid and valve body, disk seat subassembly and spheroid form the cooperation, the disk seat subassembly is including having the valve seat body, a spring, Y type spring holder and slide, the front end of spring supports and presses on the disk seat body, spring groove has been seted up in the front end of Y type spring holder, the tank bottom in spring groove supports and presses on the rear end of spring and the cell wall in spring groove is located the periphery side of spring, the rear end of Y type spring holder has the boss, the boss inserts and forms the cooperation of sliding in the slide, the slide supports and presses on the valve body inner wall, the periphery of boss, between slide and the valve body inner wall and the interior week of boss, install first sealing member between slide and the disk seat body respectively.

Adopt above-mentioned technical scheme, first sealing member can seal the seam crossing of the inside and outside periphery of Y type spring holder to through spring elastic action, make first sealing member pressurized from the beginning, strengthened the sealed effect of first sealing member, effectively prevent dust or small granule entering seam crossing and disturbing the normal effect of spring, promote dustproof grade, avoid the spring inefficacy and the disk seat card that leads to dies the leakage phenomenon, be applicable to abominable operating mode such as muddy, bonding.

The utility model discloses a further setting: the front end of spring still is provided with L type spring holder, and the front end of spring supports to press on the rear end face of L type spring holder, has the step on the disk seat body, and step and L type spring holder looks adaptation install the second sealing member between the periphery of step, L type spring holder and the valve body inner wall.

By adopting the further arrangement, the elastic force of the spring also acts on the second sealing element at the joint of the front end of the spring and the sealing joint of the second sealing element, so that the sealing performance is improved.

The utility model discloses a further setting again: the cross sections of the first sealing element and the second sealing element are respectively wedge-shaped.

By adopting the above further arrangement, along with the rise of the medium pressure, the generated pressure has a self-tight sealing effect on the wedge-shaped inclined planes of the two sealing elements, and the sealing force is larger when the pressure is larger, so that the sealing property is more reliable.

The utility model discloses a still further set up: the sliding seat is provided with a ring groove, and the lug boss is inserted in the ring groove to form slidable fit.

By adopting the above further arrangement, under the action of the spring and the medium, the Y-shaped spring seat is pressed to slide, and the sliding seat is actually used for guiding the sliding action of the Y-shaped spring seat.

The utility model discloses a still further set up: the first sealing element and the second sealing element are made of flexible graphite sealing rings.

By adopting the above further arrangement, the material selection is reasonable, and the sealing performance is favorably improved.

Drawings

FIG. 1 is a cross-sectional view of the overall structure of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion A of the present invention;

wherein, 1, a valve seat component; 2. a sphere; 3. a valve body; 11. a valve seat body; 12. a spring; 13. a Y-shaped spring seat; 14. a slide base; 131. a spring slot; 132. a boss; 15. a first seal member; 16. an L-shaped spring seat; 111. a step; 17. a second seal member; 141. and a ring groove.

Detailed Description

As shown in fig. 1 and 2, the metal sealing fixed ball valve includes a seat assembly 1, a ball 2 and a valve body 3, the seat assembly 1 and the ball 2 are matched, the direction of the seat assembly 1 approaching the ball 2 is the front end direction, the seat assembly 1 includes a seat body 11, a spring 12, a Y-shaped spring seat 13 and a sliding seat 14, the front end of the spring 12 is pressed against the seat body 11, a spring groove 131 corresponding to the number of the springs 12 is opened in the front end of the Y-shaped spring seat 13, the bottom of the spring groove 131 is pressed against the rear end of the spring 12, the groove wall of the spring groove 131 is located on the outer peripheral side of the spring 12 for limiting the spring 12, the rear end of the Y-shaped spring seat 13 has a boss 132, the boss 132 is inserted into the sliding seat 14 to form a sliding fit, the sliding seat 14 is pressed against the inner wall of the valve body 3, the outer periphery of the boss 132, the space between the sliding seat 14 and the inner wall of the valve body 3 and the inner periphery of the boss 132, Install first sealing member 15 between slide 14 and the valve seat body 11 respectively for two first sealing members 15 can seal the seam department of Y type spring holder 13 internal periphery, periphery respectively, recycle spring 12's elasticity, and first sealing member 15 is pressed from the beginning to the end, and the leakproofness is better, thereby stops dust or tiny particle entering seam department.

In order to prevent medium particles from entering the spring groove 131 from the front end direction of the spring 12, the front end of the spring 12 is further provided with an L-shaped spring seat 16, the front end of the spring 12 abuts against the rear end face of the L-shaped spring seat 16, the valve seat body 11 is provided with a step 111, the step 111 is matched with the L-shaped spring seat 16, and a second sealing element 17 is installed in a cavity enclosed between the periphery of the step 111, the L-shaped spring seat 16 and the inner wall of the valve body 3, so that dust can be prevented from entering the front end direction of the valve seat assembly 1.

The cross sections of the first sealing element 15 and the second sealing element 17 are respectively in a wedge shape, and the front end surfaces of the wedge shapes are inclined planes. When the medium pressure is increased, the spring groove 131 is most easily penetrated by dust, but the wedge-shaped first sealing element 15 and the wedge-shaped second sealing element 17 are pressed to form oblique pressure along with the increase of the medium pressure, and the inclined surfaces are squeezed into the gap, so that better sealing performance is obtained.

Under the action of the spring 12 and the medium, the Y-shaped spring seat 13 slightly slides when being pressed, the sliding seat 14 is provided with a ring groove 141, the boss 132 is inserted into the ring groove 141 to form a slidable fit, and the depth of the ring groove 141 needs to meet the maximum sliding amount of the boss 132.

The first sealing element 15 and the second sealing element 17 are made of flexible graphite sealing rings.

The Y-shaped spring seat 13 and the L-shaped spring seat 16 are annular, and the sections of the two through the axes are respectively Y-shaped and L-shaped.

Claims

1. The utility model provides a fixed ball valve of metal seal, includes valve seat subassembly, spheroid and valve body, valve seat subassembly and spheroid form the cooperation, its characterized in that: the disk seat subassembly is including having disk seat body, spring, Y type spring holder and slide, the front end of spring supports to press on disk seat body, spring groove has been seted up in the front end of Y type spring holder, the tank bottom in spring groove supports to press on the rear end of spring and the cell wall in spring groove is located the periphery side of spring, the rear end of Y type spring holder has the boss, the boss inserts the interior cooperation of sliding that forms of slide in the slide, the slide supports to press on the valve body inner wall, install first sealing member between the periphery of boss, slide and the valve body inner wall and between the interior week of boss, slide and the disk seat body respectively.

2. The metal seal retainer ball valve as set forth in claim 1, wherein: the valve seat body is provided with a step, the step is matched with the L-shaped spring seat, and a second sealing element is arranged among the periphery of the step, the L-shaped spring seat and the inner wall of the valve body.

3. The metal seal retainer ball valve as set forth in claim 2, wherein: the cross sections of the first sealing element and the second sealing element are respectively wedge-shaped.

4. The metal seal retainer ball valve as defined in claim 1 or 2, wherein: the sliding seat is provided with a ring groove, and the lug boss is inserted in the ring groove to form slidable fit.

5. The metal seal retainer ball valve as set forth in claim 2, wherein: the first sealing element and the second sealing element are made of flexible graphite sealing rings.