CN217207851U

CN217207851U - Pneumatic full-bore double-eccentric half ball valve

Info

Publication number: CN217207851U
Application number: CN202220980835.8U
Authority: CN
Inventors: 赵州; 韦丽花; 赵宸; 赵举川; 赵紫光; 赵东州
Original assignee: Henan Black Horse Industry Co ltd
Current assignee: Henan Black Horse Industry Co ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-08-16
Anticipated expiration: 2032-04-26

Abstract

The utility model discloses a pneumatic full-bore double-eccentric half-ball valve, which comprises a valve body, a valve core, a valve rod and a supporting component; the valve core comprises a hemispherical sealing assembly which is arranged in the valve body in an eccentric mode, and a valve rod is arranged at the position of a rotary axis; the supporting assembly comprises an eccentric wheel and a supporting body, wherein the eccentric wheel is coaxially and fixedly arranged with the valve rod, the supporting body is relatively fixed with the valve body, when the valve core is in a closed state, the maximum turning radius point of the eccentric wheel is in contact with the supporting body, positive pressure exists between the eccentric wheel and the supporting body, and the supporting assembly is added to the pneumatic full-path double-eccentric half ball valve, so that the stress difference on two sides of the rotating installation position of the valve rod or the valve core is reduced, the single-point excessive abrasion is avoided, and the rotation axis deviation of the valve core is avoided.

Description

Pneumatic full-bore double-eccentric half ball valve

Technical Field

The utility model relates to the technical field of valves, specifically be a pneumatic full latus rectum double-eccentric half-ball valve.

Background

The eccentric half ball valve has the advantages of small fluid resistance, simple structure, small volume, light weight, simple operation, wide application range and the like, and can be applied to a plurality of transmission pipelines, but when the half ball valve is in use, the two sides of the rotating contact position of the valve rod are stressed unevenly, if the valve is in a closed state, one side of the high-pressure cavity pushes the valve core to rotate towards the other side, the rotating angle of the ball valve is 90 degrees, namely one side of the rotating installation position of the valve rod is under continuous stress, the abrasion loss in the rotating process is obviously larger than that of the other side, and after long-term use, the two sides of the rotating installation position of the valve rod or the valve core are abraded inconsistently, so that the rotating axis of the valve core deviates, and the integral sealing performance of the ball valve is reduced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a pneumatic full latus rectum double-eccentric half ball valve, through increasing supporting component, it is poor to reduce the atress that valve rod or case rotated the mounted position both sides, avoids the excessive wearing and tearing of single-point, avoids case gyration axis skew, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a pneumatic full-bore double-eccentric half-ball valve comprises a valve body, a valve core, a valve rod and a supporting assembly;

the valve core comprises a hemispherical sealing assembly which is arranged in the valve body in an eccentric mode, and a valve rod is arranged at the position of a rotary axis;

and the supporting assembly comprises an eccentric wheel which is coaxially and fixedly arranged with the valve rod and a supporting body which is fixed relative to the valve body, when the valve core is in a closed state, the maximum gyration radius point of the eccentric wheel is in contact with the supporting body, and positive pressure exists between the eccentric wheel and the supporting body.

As a preferred technical scheme of the utility model, the support body is a support wheel rotatably mounted with the valve body, and the rotation axis of the support wheel is parallel to the axis of the valve rod;

the supporting wheel is installed through increasing to rotate, reduces the friction between supporter and the eccentric wheel, reduces the opening resistance of case, reduces the wearing and tearing of eccentric wheel and supporter.

As a preferred technical scheme of the utility model, the supporting wheel comprises an inner wheel and an outer wheel which are coaxially arranged, and an elastic sleeve is filled between the inner wheel and the outer wheel;

through the structural design of the supporting wheel, the inner wheel and the outer wheel can move relatively along the radial direction, namely, the supporting wheel has certain diameter-changing capability when being in contact extrusion with the eccentric wheel, and the problem of blocking with the eccentric wheel is avoided.

As a preferred technical scheme of the utility model, the sealing position of the hemispherical seal assembly is provided with a conical indent, the inner and outer surfaces of the conical indent are respectively provided with an inner conical sealing surface b and an outer spherical sealing surface a, and the interior of the valve body is provided with a sealing seat which is respectively used for contacting and sealing with the inner conical sealing surface b and the outer spherical sealing surface a;

the sealing capability between the valve core and the sealing seat is improved through the inner layer and the outer layer of sealing.

As a preferred technical scheme of the utility model, the sealing seat comprises a soft seal and a hard seal which are coaxially arranged, and the soft seal and the hard seal can be respectively in contact seal with an inner cone sealing surface b and an outer ball sealing surface a;

the soft seal adopts soft sealing ring, and sealed with interior cone seal face b contact, and the hard seal adopts spherical shell form metal seal, and sealed with outer ball seal face a contact, and when the valve was in the closed condition, inside high-pressure fluid can oppress soft seal and laminate interior cone seal face b to promote sealing performance.

As a preferred technical scheme of the utility model, the hemisphere sealing assembly comprises a hemisphere and a sealing body which are relatively and fixedly connected, the hemisphere is of a spherical shell structure and is fixedly connected with the valve rod, and the front end face of the sealing body is provided with a sealing face for contacting and sealing with the inside of the valve body;

the valve core adopts a hemisphere and seal body separated design, and the seal surface is positioned on the surface of the seal body, so that the processing difficulty is reduced, the seal body is convenient to maintain and replace, and the maintenance cost is reduced.

Compared with the prior art, the beneficial effects of the utility model are that: this two eccentric hemisphere valves of full latus rectum of pneumatics supports one side of keeping away from the high-pressure chamber to case or valve rod through installing supporting component additional in inside to eliminate the pressure differential of case or valve rod rotational position both sides, avoid rotating the local excessive wearing and tearing of mounted position, thereby avoid the skew of case axis of revolution, guarantee the sealing performance of sealed face department, and also guaranteed the sealing performance of rotating mounted position department.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the valve element and the sealing seat of the present invention;

FIG. 3 is a top view of the valve element and the sealing seat of the present invention;

FIG. 4 is a broken line sectional view taken along line A-A of the present invention;

FIG. 5 is an exploded view of the components of the valve core and the sealing seat of the present invention;

fig. 6 is a cross-sectional view of the support wheel of the present invention.

In the figure: 1. a valve body; 2. a valve core; 201. a hemisphere; 202. a seal body; 203. reinforcing the transverse plate; 3. a sealing seat; 301. hard sealing; 302. soft sealing; 4. a valve stem; 5. a support assembly; 501. a support wheel; 501a, an inner wheel; 501b, an elastic sleeve; 501c, an outer wheel; 502. an eccentric wheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a pneumatic full-bore double-eccentric half-ball valve comprises a valve body 1, a valve core 2, a valve rod 4 and a supporting component 5;

the valve core 2 comprises a hemispherical sealing assembly which is arranged in the valve body 1 in an eccentric mode, and a valve rod 4 is arranged at the position of a rotary axis;

the support assembly 5 comprises an eccentric 502 fixedly arranged coaxially with the valve stem 4 and a support body fixed opposite to the valve body 1, when the valve core 2 is in the closed state, the maximum turning radius point of the eccentric 502 is in contact with the support body, and positive pressure exists between the eccentric 502 and the support body.

The support body is a support wheel 501 rotatably mounted with the valve body 1, and the rotation axis of the support wheel 501 is parallel to the axis of the valve rod 4;

by increasing the rotary mounting support wheel 501, the friction between the support body and the eccentric wheel 502 is reduced, the opening resistance of the valve core 2 is reduced, and the abrasion between the eccentric wheel 502 and the support body is reduced.

The supporting wheel 501 comprises an inner wheel 501a and an outer wheel 501c which are coaxially arranged, and an elastic sleeve 501b is filled between the inner wheel 501a and the outer wheel 501 c;

through the structural design of the supporting wheel 501, the inner wheel 501a and the outer wheel 501c can move relatively along the radial direction, namely, when the supporting wheel 501 is in contact with the eccentric wheel 502 for extrusion, a certain diameter-changing capacity can be achieved, and the problem of jamming of the supporting wheel 501 and the eccentric wheel 502 is avoided.

Referring to fig. 4, a sealing position of the hemispherical sealing assembly is provided with a conical indent, the inner surface and the outer surface of the conical indent are respectively provided with an inner conical sealing surface b and an outer spherical sealing surface a, and a sealing seat 3 which is respectively used for contacting and sealing with the inner conical sealing surface b and the outer spherical sealing surface a is arranged inside the valve body 1;

the sealing capability between the valve core 2 and the sealing seat 3 is improved through the inner layer and the outer layer of sealing.

The sealing seat 3 comprises a soft seal 302 and a hard seal 301 which are coaxially arranged, and the soft seal 302 and the hard seal 301 can be respectively in contact sealing with an inner cone sealing surface b and an outer ball sealing surface a;

the soft seal 302 is a soft seal ring and is in contact seal with the inner cone seal surface b, the hard seal 301 is a metal seal in a spherical shell shape and is in contact seal with the outer ball seal surface a, and when the valve is in a closed state, the soft seal 302 is pressed by internal high-pressure fluid to be attached to the inner cone seal surface b, so that the sealing performance is improved.

The hemisphere sealing assembly comprises a hemisphere 201 and a sealing body 202 which are relatively and fixedly connected, the hemisphere 201 is of a spherical shell structure and is fixedly connected with the valve rod 4, and the front end face of the sealing body 202 is provided with a sealing face used for being in contact sealing with the inside of the valve body 1;

referring to fig. 5, the valve core 2 is designed in a manner that the hemisphere 201 and the sealing body 202 are separated, the sealing surface is located on the surface of the sealing body 202, so that the processing difficulty is reduced, the sealing body 202 is convenient to maintain and replace, the maintenance cost is reduced, the hemisphere 201 is designed in a spherical shell, and the reinforcing transverse plate 203 is arranged inside the hemisphere to improve the rigidity of the hemisphere.

When the design is carried out, the design time,

referring to fig. 3, the hemisphere 201 is installed eccentrically, that is, the rotation axis of the hemisphere 201 does not overlap with the axis of the hemisphere itself, so that the friction between the hemisphere 201 and the sealing surface is reduced during the rotation process.

Referring to fig. 3 and 4, the eccentric wheel 502 is fixed to the hemisphere 201 by bolts, the rotation axis of the eccentric wheel is consistent, the supporting wheel 501 is arranged on one side of the eccentric wheel 502 far away from the high pressure cavity, and when the valve is in a closed state, the supporting wheel 501 is in pressing contact with the long diameter end of the eccentric wheel 502 to provide a supporting force to counteract the acting force of the fluid on the valve core 2;

referring to fig. 3, the circumferential surface of the eccentric wheel 502 adopts an arc structure, so that in the process that the valve core 2 rotates from the closed state to the open state, the eccentric wheel 502 and the supporting wheel 501 are all in contact, and the contact extrusion force is gradually reduced, namely the turning radius of the contact point of the eccentric wheel 502 and the supporting wheel 501 is gradually reduced;

referring to fig. 6, the supporting wheel 501 is designed by an inner wheel 501a and an outer wheel 501c, and has a certain diameter-changing capability, so that it can always contact with the eccentric wheel 502 and provide different pressing forces.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pneumatic full latus rectum double-eccentric half-ball valve, includes valve body (1), case (2), valve rod (4) and supporting component (5), its characterized in that:

the valve core (2) comprises a hemispherical sealing component which is arranged in the valve body (1) in an eccentric mode, and a valve rod (4) is arranged at the position of a rotating axis;

and the supporting assembly (5) comprises an eccentric wheel (502) which is coaxially and fixedly arranged with the valve rod (4) and a supporting body which is fixed relative to the valve body (1), when the valve core (2) is in a closed state, the maximum gyration radius point of the eccentric wheel (502) is in contact with the supporting body, and positive pressure exists between the eccentric wheel (502) and the supporting body.

2. The pneumatic full-bore double-eccentric hemispherical valve according to claim 1, wherein: the support body is a support wheel (501) rotatably mounted with the valve body (1), and the rotation axis of the support wheel (501) is parallel to the axis of the valve rod (4).

3. The pneumatic full-bore double-eccentric hemispherical valve according to claim 2, wherein: the supporting wheel (501) comprises an inner wheel (501a) and an outer wheel (501c) which are coaxially arranged, and the inner wheel (501a) and the outer wheel (501c) are filled with an elastic sleeve (501b) in the middle.

4. The pneumatic full-bore double-eccentric hemispherical valve according to claim 1, wherein: the sealing part of the hemispherical sealing assembly is provided with a conical indent, the inner surface and the outer surface of the conical indent are respectively provided with an inner conical sealing surface b and an outer spherical sealing surface a, and a sealing seat (3) which is respectively used for being in contact sealing with the inner conical sealing surface b and the outer spherical sealing surface a is arranged in the valve body (1).

5. The pneumatic full-bore double-eccentric hemispherical valve according to claim 4, wherein: the sealing seat (3) comprises a soft seal (302) and a hard seal (301) which are coaxially arranged, and the soft seal (302) and the hard seal (301) can be respectively in contact sealing with an inner cone sealing surface b and an outer ball sealing surface a.

6. The pneumatic full-bore double-eccentric hemispherical valve according to claim 1, wherein: the hemisphere seal assembly comprises a hemisphere (201) and a seal body (202) which are fixedly connected relatively, the hemisphere (201) is of a spherical shell structure and is fixedly connected with the valve rod (4), and a seal surface used for being in contact seal with the interior of the valve body (1) is arranged on the front end face of the seal body (202).