CN213628972U

CN213628972U - Ball valve with pressure balance hole

Info

Publication number: CN213628972U
Application number: CN202021221685.XU
Authority: CN
Inventors: 卜步建; 刘远祥; 张玉龙
Original assignee: Gaiyide Wuxi Valve Co ltd
Current assignee: Gaiyide Wuxi Valve Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-07-06
Anticipated expiration: 2030-06-28

Abstract

The utility model discloses a ball valve with pressure balance holes, which comprises a valve body and a valve seat, wherein the valve body is arranged at the upper end of the valve seat, a ball body is arranged inside the valve body, the upper end of the ball body is connected with a valve rod, the bottom of the lower end of the ball body is provided with a balance hole, a channel is arranged inside the valve body at the lower side of the ball body, a middle cavity is arranged inside the valve body at the upper side of the ball body, a valve cover is arranged on the outer wall of the right end of the valve body, the inner channel of the valve body is communicated with the middle cavity by arranging the balance hole on the ball body inside the traditional ball valve, so that the pressure inside the channel and the middle cavity is kept balanced, no pressure difference exists between the two, almost no friction exists between the ball body and the valve seat, the sealing surface of the ball body is protected, the torque of the valve rod when, the service life of the valve is prolonged, and the practicability of the valve ball is improved.

Description

Ball valve with pressure balance hole

Technical Field

The utility model belongs to the technical field of petrochemical single piston ball valve is relevant, concretely relates to set up pressure balance hole's ball valve.

Background

The ball valve is a valve in which an opening and closing part (a ball body) is driven by a valve rod and rotates around the axis of the ball valve, and can also be used for regulating and controlling fluid. The ball valve is divided into a pneumatic ball valve, an electric ball valve and a manual ball valve according to a driving mode. In China, ball valves are widely used in petroleum refining, long-distance pipelines, chemical industry, paper making, pharmacy, water conservancy, electric power, municipal administration, steel and other industries.

The existing single-piston ball valve technology has the following problems: traditional single piston ball valve is in the use, and when single piston ball valve is opened entirely the lumen is kept apart with the same way relatively, and the lumen produces pressure differential with the same way easily, will increase the frictional force of ball and disk seat like this, and sealed face damages easily moreover, leads to the valve to leak, and frictional force also can lead to the moment of torsion grow greatly moreover, and the valve is difficult to the switch.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a offer ball valve in pressure balance hole to the traditional single piston ball valve that provides in solving above-mentioned background art when opening entirely lumen and with the way relative isolation easily produce the sealed face of pressure differential fragile, frictional force lead to the problem of moment of torsion grow greatly.

In order to achieve the above object, the utility model provides a following technical scheme: offer ball valve in pressure balance hole, including valve body and disk seat, the upper end at the disk seat is installed to the valve body, the inside of valve body is provided with the spheroid, spheroidal upper end is connected with the valve rod, spheroidal lower extreme bottom is provided with the balance hole, the inside passageway that is provided with of valve body of spheroid downside, the inside lumen that is provided with of valve body of spheroid upside, be provided with the valve gap on the right-hand member outer wall of valve body.

Preferably, the channel and the middle cavity are communicated with each other through a balance hole.

Preferably, the lower end of the valve stem passes through the valve body and is fixedly inserted into the upper end of the ball.

Preferably, the left end of the valve cover is provided with a plug body, and the left end plug body of the valve cover is fixedly embedded in the right end of the valve body and sealed through a sealing ring.

Preferably, the valve cover and the valve body are rotatably connected through threads and are fixed through nuts.

Preferably, a T-shaped structure is formed between the channel and the balance hole.

Compared with the prior single-piston ball valve technology, the utility model provides a set up pressure balance hole's ball valve possesses following beneficial effect:

1. the utility model discloses a set up the balancing hole on traditional ball valve inside spheroid for valve body internal passage link up with the lumen mutually, thereby make passageway and lumen internal pressure keep balance, make no pressure differential between the two, thereby make between spheroid and the valve seat almost no friction, protected its sealed face, and effectively reduced the moment of torsion of valve rod when opening or closing, make the valve more convenient and laborsaving during the switch, improved the practicality of valve ball;

2. the utility model discloses when the spheroid is when full open position, the passageway of spheroid lower extreme can link up completely to come the internal pressure of balanced valve rod, valve body, valve gap, disk seat and the lumen that the spheroid formed through the balance hole, thereby make passageway and lumen internal pressure keep balance, protected the sealed face between spheroid and the disk seat, improved the sealing performance of valve, greatly reduced improves the life of valve to the wearing and tearing between spheroid and the disk seat.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic structural view of the ball valve provided with the pressure balance hole of the present invention;

in the figure: 1. a valve stem; 2. a valve body; 3. a valve cover; 4. a valve seat; 5. a sphere; 6. a channel; 7. a balance hole; 8. a middle cavity.

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. 1-1, the present invention provides a technical solution: a ball valve with pressure balance holes comprises a valve body 2 and a valve seat 4, wherein the valve body 2 is installed at the upper end of the valve seat 4, a ball body 5 is arranged inside the valve body 2, the upper end of the ball body 5 is connected with a valve rod 1, the lower end of the valve rod 1 penetrates through the valve body 2 and is fixedly inserted into the upper end of the ball body 5, the valve rod 1 is tightly connected with the ball body 5, the position of the ball body 5 inside the valve body 2 can be regulated and controlled by rotating the valve rod 1, the flow rate of the valve is controlled, almost no friction exists between the ball body 5 and the valve seat 4, the force is better saved when the valve rod 1 is rotated, the bottom of the lower end of the ball body 5 is provided with a balance hole 7, a channel 6 is arranged inside the valve body 2 on the lower side of the ball body 5, a T-shaped structure is formed between the channel 6 and the balance hole, no pressure difference is caused between the passage 6 and the middle chamber 8, so that almost no relative friction is ensured between the ball 5 and the valve seat 4, and the sealing surface of the ball 5 and the valve seat 4 is protected.

Offer ball valve in pressure balance hole, 2 inside cavities 8 that are provided with of valve body including spheroid 5 upside, keep the state of intercommunication each other through balance hole 7 between passageway 6 and the cavities 8, through offering balance hole 7 on spheroid 5, make passageway 6 link up with cavities 8 mutually, thereby make

passageway

6 and 8 internal pressure in cavities keep balanced, make no pressure differential between the two, thereby make almost no friction between spheroid 5 and the disk seat 4, its sealed face has been protected, and effectively reduced the moment of torsion of valve rod 1 when opening or closing, make during the switch more convenient and laborsaving.

Offer the ball valve in pressure balance hole, be provided with valve gap 3 on the right-hand member outer wall including valve body 2, the left end of valve gap 3 is provided with the cock body, valve gap 3 left side end plug body is fixed embedded inside the right-hand member at valve body 2 and sealed through the sealing washer, make 2 inside seal status that keep of valve body, avoid valve body 2 to appear leaking and lead to the waste of raw materials, can inspect and maintain valve body 2 through opening valve gap 3 simultaneously, it is fixed through the nut through screw thread swivelling joint between valve gap 3 and the valve body 2, make 3 fixed mounting of valve gap at the right-hand member of valve body 2, when guaranteeing the sealed effect of valve body 2, can open 2 inside lumen 8 in upper end of valve body through the fastening spiral shell of pulling down 3 lower extremes of valve gap, thereby look over maintenance and mediation to.

The utility model discloses a theory of operation and use flow: after the utility model is installed, because the valve rod 1 is tightly connected with the ball body 5, the position of the ball body 5 inside the valve body 2 can be regulated and controlled by rotating the valve rod 1, thereby controlling the flow rate of the valve, the passage 6 is communicated with the middle cavity 8 by arranging the balance hole 7 on the ball body 5, when the ball body 5 is in the full open position, the passage 6 at the lower end of the ball body 5 can be completely communicated, and the internal pressure of the middle cavity 8 formed by the valve rod 1, the valve body 2, the valve cover 3, the valve seat 4 and the ball body 5 is balanced by the balance hole 7, thereby the internal pressure of the passage 6 and the middle cavity 8 keeps balance, no pressure difference is generated between the two, thereby the ball body 5 and the valve seat 4 have almost no relative friction, the sealing surface between the ball body 5 and the valve seat 4 is protected, the sealing performance of the valve is improved, and the torque of the valve rod 1 when the, the switch is more convenient and labor-saving, and the abrasion between the ball body 5 and the valve seat 4 is reduced.

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. Offer the ball valve in pressure balance hole, including valve body (2) and disk seat (4), its characterized in that: the upper end at disk seat (4) is installed in valve body (2), the inside of valve body (2) is provided with spheroid (5), the upper end of spheroid (5) is connected with valve rod (1), the lower extreme bottom of spheroid (5) is provided with balancing hole (7), valve body (2) inside of spheroid (5) downside is provided with passageway (6), valve body (2) inside of spheroid (5) upside is provided with lumen (8), be provided with valve gap (3) on the right-hand member outer wall of valve body (2).

2. The ball valve with the pressure balance hole according to claim 1, wherein: the channel (6) and the middle cavity (8) are kept in a mutual communication state through a balance hole (7).

3. The ball valve with the pressure balance hole according to claim 1, wherein: the lower end of the valve rod (1) penetrates through the valve body (2) and is fixedly inserted into the upper end of the ball body (5).

4. The ball valve with the pressure balance hole according to claim 1, wherein: the left end of valve gap (3) is provided with the cock body, valve gap (3) left end plug body is fixed the embedded inside right-hand member of valve body (2) and is sealed through the sealing washer.

5. The ball valve with the pressure balance hole according to claim 1, wherein: the valve cover (3) is rotationally connected with the valve body (2) through threads and is fixed through nuts.

6. The ball valve with the pressure balance hole according to claim 1, wherein: and a T-shaped structure is formed between the channel (6) and the balance hole (7).