KR20030086032A - Ball check valve - Google Patents

Abstract

PURPOSE: A ball check valve is provided to lengthen the life span of products including the ball check valve by minimizing the operational distance and load of the movable closing member. CONSTITUTION: In a ball check valve, a movable closing member(8) is installed in a closed passage(32) formed at an operation ball(3), and minimizes an operational distance and load. The movable closing member includes a couple of hemispherical closing units(81), and a connection unit(82) connecting the closing units.

Description

Ball check valve

The present invention relates to a ball check valve, and in particular, the opening and closing passage is formed in communication in the orthogonal direction, the closing passage of the working ball is moved by a short section by the internal pressure of the closing ball and closing the flow path, by installing a moving closing member to reduce the load It minimizes the impact during operation, allows for smooth movement and complete flow closure.

The ball check valve is formed in the operation ball installed in the valve body in the orthogonal direction opening and closing path to open or close the flow path of the valve body in accordance with the selected rotation of the opening and closing lever, the applicant It is presented in a patent application filed under the same name.

1 is a view illustrating a conventional ball check valve v. The valve body in which a joint part 11 and a connection part 12 are formed at both ends of an outer surface, and an operation chamber 14 is formed at the center of an inner flow path 13 is shown. (1);

It is installed to be in close contact with the ball seat (2a, 2b) in the operating chamber 14, the open passage 31 and the closed passage 32 is formed in communication in the orthogonal direction at the center thereof, the inside of the closed passage (32) An operation ball 3 having a moving ball 33 therein;

An operating shaft (4) having a locking protrusion (41) corresponding to the locking groove (34) of the upper surface of the operating ball (3), the opening and closing lever (5) being fastened and fixed;

A cover (6) provided on the upper surface of the valve body (1) and having a shaft support portion (61) formed thereon to support the operating shaft (4);

It is composed of an elastic member (7) which is installed in the receiving portion (62) inside the shaft support (61) of the cover (6) to impart an upward tension to the working shaft (4).

In the conventional ball check valve (v) of such a configuration, when the open / close lever 5 is driven forward and backward within the range of 90 °, the operation ball 3 is also rotated by 90 ° by the operating shaft 4, at which time the operation ball 2, since the open passage 31 and the closed passage 32 are formed as shown in FIG. 2, when the open passage 31 coincides with the flow passage 13 of the valve body 1, a constant, gas, etc. When the closed passage 32 coincides with the flow passage 13, the moving ball 33 inside the closed passage 32 is moved by the internal pressure, so that the ball seats 2a, By contacting with 2b), the flow path 13 is closed.

However, since the conventional ball check valve v has a small load when the moving ball 33 is small, the ball pressure valve v may freely move from side to side in the closed passage 32, so that the internal pressure when the switch is changed from the open state to the closed state As a result, the ball seats 2a and 2b strongly collide with each other, and the moving balls 33 have a large self-load, so that the moving speed is slow and the closing of the flow path is difficult.

This problem eventually causes breakage of the ball seats 2a and 2b and the peripheral parts, including the moving ball 33, and shortens the life of the product. It will be inhibited.

In view of the above problems, the present invention can minimize the impact during operation, thereby realizing the life extension of the product, as well as the ball check, which can greatly improve the user's product preference by ensuring the reliability of the operation by completely closing the flow path. The purpose is to provide a valve.

In order to effectively achieve the above object, in the present invention, by reducing the load of the movable closing member accommodated in the operation ball, it is possible to move the minimum distance and close the closed passage to minimize the impact during operation and completely the flow path To be closed.

1 is a cross-sectional configuration of a conventional ball check valve

Figure 2 is an exploded perspective view of the operation ball constituting the conventional ball check valve

Figure 3 is an exploded perspective view of the operation ball constituting the ball check valve according to the present invention

4 is an operation of the ball check valve according to the present invention,

(A) is the plan view of the open state

(B) is a plan view in closed condition

-Explanation of symbols for the main parts of the drawings-

1: Valve body 2a, 2b: Ball seat

3: operation ball 8: moving closure member

13: Euro 31: Open passage

32: closed passage 81: closed portion

82: consolidation

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred structural examples of the present invention will be described in detail with reference to the accompanying drawings in which like parts and members have been assigned the same reference numerals.

3 is an exploded perspective view of the actuating ball 3 according to the present invention, in which the opening passage 31 and the closing passage 32 are formed in an orthogonal direction on both sides of the actuating ball 3 as in the related art.

A feature of the present invention is the part provided with a movable closing member 8 which can minimize the working distance and its own load in the closed passage 32.

The movable closing member 8 is composed of a pair of left and right closure portions 81 formed in a hemispherical shape and a connection fixing portion 82 connecting the pair of closure portions 81 to reduce its own load. It may be made of synthetic resin material or metal material.

Fig. 4 (A) is a plan sectional view of the open state of the ball check valve v according to the present invention, where reference numeral 15 denotes a flange portion.

In this case, the operation ball 3 in the valve body 1 maintains its open passage 31 in accordance with the flow passage 13, so that constant water, gas, etc. can flow freely through the flow passage 13. .

At this time, the connection fixing portion 82 of the movement closing member 8 is across the flow path 13, but the movement of the fluid is not limited.

Figure 4 (b) shows the closed state of the ball check valve (v) according to the present invention, in order to switch to this closed state to rotate the opening and closing lever 5 of the valve body 1 outer surface 90 ° Of course.

When the operation ball 3 is rotated by 90 degrees by the above operation, the closed passage 32 coincides with the passage 13, wherein the movable closing member 8 housed in the closed passage 32 is a passage. It moves to either side by the constant which flows inside (13), or pressure, such as gas.

Therefore, any one side of the both side closure portion 81 constituting the movement closing member 8 is in contact with the ball seat (2a, 2b) to close the flow path 13, wherein the movement distance of the movement closing member 8 is minute Since the impact of the movable closing member 8 is minimized, and the ball-type movable closing member 8 is manufactured in a long shape, its own load is reduced so that the movement is smooth even with a small amount of hydraulic pressure and the closing action of the flow path is completed.

As described above, the ball check valve v of the present invention can reduce the impact by minimizing the operating distance of the movable closing member 8 housed in the operation ball 3, thereby lowering the failure rate of the peripheral parts and thus the life of the product. In addition to the extension, the product's own load is reduced and the movement is smooth and the flow path is completely closed, which makes it possible to increase the size of the product. It can be effected.

Claims (1)

In the valve body 1 covered by the cover 6, the ball seats 2a and 2b are supported, and in the center thereof, an actuating ball 3 is formed so as to communicate with the open passage 31 and the closed passage 32 at right angles. In the actuating shaft 4 rotating the actuating ball 3 by rotating the opening / closing lever 5 to open and close the flow passage 13 in the valve body 1, In the closed passage 32 of the working ball 3 is installed a movable closing member 8 which can minimize the working distance and its own load, the movable closing member 8 is a pair of left and right closed in a hemispherical shape Ball check valve, characterized in that consisting of a portion (81) and the connection fixing portion (82) connected between the pair of closing portions (81).