CN201363453Y - Self-cleaning ball-valve sealing base - Google Patents

Abstract

The utility model relates to a self-cleaning ball-valve sealing base, wherein the shape of the sealing base is that a plurality of arc grooves are formed at the periphery of the sealing base; or a plurality of penetrable holes are formed at the periphery of the sealing base; or a plurality of penetrable holes or arc grooves are arranged along the channel of the sealing base. The sealing base is applied to a non-symmetrical notch ball valve, which can realize the self-cleaning function without external energy; therefore, the operation is simple and convenient, and the cost is low.

Description

Automatically cleaning ball valve sealing seat

Technical field

The utility model relates to a kind of sealing seat that is applicable to asymmetric ball valve of notched ball type, particularly a kind of automatically cleaning ball valve sealing seat of sealing seat and valve cavity being implemented cleaning function in the ball valve opening-closing process.

Background technique

Solid Gu be used for gas/or liquid/the metal seal ball valve of two phase flow, at the spring place of sealing seat, and the easy accumulated solids particle of valve cavity, thereby influence the sealability of valve seat, shorten the operation period of valve.

Traditional solution is that the exterior washings system is set, and promptly regularly sealing seat and valve pocket injection high-pressure medium is cleaned, but needs extra power, and be subjected to the restriction of medium, has very big difficulty in the enforcement.

The model utility content

Technical problem of the present utility model is that a kind of automatically cleaning ball valve sealing seat that can implement self-cleaning function in valve opening and pass closed procedure will be provided.

In order to solve above technical problem, the utility model provides a kind of automatically cleaning ball valve sealing seat, and the shape of sealing seat is:

A) periphery of sealing seat forms a plurality of arc grooves; Perhaps

B) periphery of sealing seat forms a plurality of penetration holes; Perhaps

C) passage along sealing seat has a plurality of oblique penetration holes or arc groove.

Ball valve has the valve of two sealing pairs, i.e. upstream extremity sealing seat and downstream sealing seat, and ball valve generally is the sealing of downstream sealing seat when floating, ball valve generally is that the upstream extremity sealing seat seals in the time of fixedly.

The utility model is applied to asymmetric ball valve of notched ball type, one group of arc groove or a plurality of penetration hole is arranged or along the passage of sealing seat a plurality of oblique penetration holes or arc groove are arranged at the periphery of valve seat.When asymmetric ball valve of notched ball type door is opened, open the downstream sealing seat earlier, the upstream extremity sealing seat is in closed condition, the liquid of upstream extremity or gas are by one group of arc groove of upper reaches sealing seat at this moment, the flow through cavity of ball valve, flow to the downstream by the downstream sealing seat, finish cleaning function one time.When asymmetric ball valve of notched ball type door is closed, close the upstream extremity passage earlier, downstream sealing seat this moment Close All not as yet, medium is through one group of arc groove of upstream extremity sealing seat, and the valve pocket of flowing through flow to the downstream through the downstream sealing seat, finishes cleaning function one time.

Superior effect of the present utility model is: the utility model is applied to asymmetric breach ball valve, can implement cleaning function voluntarily, need not the outside energy, and simple and convenient, cost is low.

Description of drawings

Fig. 1 is the structural representation of asymmetric ball valve of notched ball type;

Fig. 2 (comprising Fig. 2 a and Fig. 2 b) has the structural representation of one group of arc groove for the utility model valve seat periphery;

Fig. 3 forms (comprising Fig. 3 a and Fig. 3 b) structural representation of a plurality of penetration holes for the periphery of the utility model valve seat;

Fig. 4 (comprising Fig. 4 a and Fig. 4 b) has the structural representation of oblique penetration hole and oblique arc groove along the passage of sealing seat for the utility model;

The number in the figure explanation:

1-upstream extremity sealing seat; 2-downstream sealing seat;

The 3-arc groove; The 4-penetration hole;

The oblique arc groove of 5-; The oblique penetration hole of 6-.

Embodiment

See also shown in the accompanying drawing, the utility model will be further described.

Model utility provides a kind of automatically cleaning ball valve sealing seat, and the shape of sealing seat is:

A) periphery of sealing seat 4 forms a plurality of arc grooves 1; Perhaps

B) periphery of sealing seat 4 forms a plurality of penetration holes 2; Perhaps

C) passage along sealing seat 4 has a plurality of oblique penetration holes 3 or arc groove.

Ball valve has the auxiliary-valve of two sealings, i.e. upstream extremity sealing seat and downstream sealing seat, and ball valve generally is the sealing of downstream sealing seat when floating, ball valve generally is that the upstream extremity sealing seat seals in the time of fixedly.

The utility model is applied to asymmetric ball valve of notched ball type, shown in Fig. 2 a and Fig. 2 b, periphery at valve seat has one group of flow area axis to be the arc groove 1 at a angle, when asymmetric ball valve of notched ball type door is opened, open downstream sealing seat 2 earlier, upstream extremity sealing seat 1 is in closed condition, the liquid of upstream extremity or gas are by one group of arc groove 3 of upstream extremity sealing seat 1 at this moment, the flow through cavity of ball valve flow to the downstream by downstream sealing seat 2, finishes cleaning function one time.When asymmetric ball valve of notched ball type door is closed, close the upstream extremity passage earlier, downstream sealing seat 2 this moment Close All not as yet, medium is through one group of arc groove 3 of upstream extremity sealing seat 1, the valve pocket of flowing through flow to the downstream through downstream sealing seat 2, finishes cleaning function one time.

Shown in Fig. 3 a and Fig. 3 b, form a plurality of penetration holes 4, the effect that can obtain to clean equally at the periphery of sealing seat.

Shown in Fig. 4 a and Fig. 4 b, along the passage of sealing seat oblique arc groove 5 and oblique penetration hole 6 are arranged, the flow area axis is a angle, can strengthen and improve the cleaning effect to cavity.

Claims (1)

1, a kind of automatically cleaning ball valve sealing seat, it is characterized in that: the shape of sealing seat is:

A) periphery of sealing seat forms a plurality of arc grooves; Perhaps

B) periphery of sealing seat forms a plurality of penetration holes; Perhaps

C) passage along sealing seat has a plurality of oblique penetration holes or arc groove.

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