CN210978595U

CN210978595U - Frictionless ball valve

Info

Publication number: CN210978595U
Application number: CN201921770613.8U
Authority: CN
Inventors: 蔡勇; 翁建朝; 谢臣庆
Original assignee: Ouqiu Valve Co ltd
Current assignee: Ouqiu Valve Co ltd
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-07-10
Anticipated expiration: 2029-10-21

Abstract

The utility model relates to a valve field especially relates to a frictionless ball valve. The valve comprises a valve body, a valve seat and a valve core are arranged in the valve body, a driving mechanism for driving the valve core to rotate is arranged on the valve body, the valve core is driven by the driving mechanism to do lifting motion relative to the valve seat, a vertically arranged valve rod is fixed on the valve core, a guide pin extending out in the radial direction is arranged on the valve rod, a guide sleeve is arranged on the valve body, the valve rod is movably arranged in the guide sleeve, a guide groove is arranged on the side wall of the guide sleeve, the guide groove comprises a vertical section, the upper end of the vertical section is upwards coiled to form a spiral section. The utility model provides a frictionless ball valve improves the structure of ball valve, reduces the wearing and tearing of case, improves the sealing performance and the life of ball valve.

Description

Frictionless ball valve

Technical Field

The utility model relates to a valve field especially relates to a frictionless ball valve.

Background

The ball valve is one kind of valve, and the case is as the opening and closing piece, is driven by the valve rod, and the valve of rotary motion is made to the duplex winding ball valve axis, for example chinese patent grant publication No. CN204004509U, application date is 2014.03.12, in the patent of the name "a novel ball valve and the supporting opening tool who uses of ball valve", disclosed a novel ball valve, be by the spheroid in the disk seat, constitute with the valve rod that the spheroid is connected, its characterized in that, the valve rod top is provided with the cross inner groovy of opening the valve door, and the valve outside still is provided with regular hexagon visor. However, the ball valve has some problems, because the valve core rotates frequently during working, friction is generated between the valve core and surrounding structures, the valve core is abraded, and the sealing performance and the service life of the ball valve are greatly reduced.

Disclosure of Invention

Based on case during operation often rotates among the ball valve that exists among the prior art, can produce the friction with structure on every side, lead to case wearing and tearing, sealing performance and life all can greatly reduced not enough, the utility model provides a frictionless ball valve improves the structure of ball valve, reduces the wearing and tearing of case, improves the sealing performance and the life of ball valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a frictionless ball valve, includes the valve body, is equipped with disk seat and case in the valve body, is equipped with on the valve body and drives valve core pivoted actuating mechanism, the case is elevating movement relative the disk seat under actuating mechanism's drive, is fixed with vertical layout's valve rod on the case, is equipped with the uide pin that radially stretches out on the valve rod, is equipped with the guide pin bushing on the valve body, and the valve rod activity sets up in the guide pin bushing, is equipped with the guide slot on the lateral wall of guide pin bushing, and the guide slot includes vertical section, and the upper end of vertical section upwards spirals and form the spiral. When actuating mechanism lifting case, the case rises one section distance earlier, the uide pin upward movement in vertical section this moment, when actuating mechanism continues the lifting case, the uide pin moves along the helicla flute, it is rotatory to order about the case, the on-off state of switching valve, because the case has risen one section distance when rotatory, can break away from the disk seat when rotatory this moment, wearing and tearing greatly reduced, and in the same way, when the case descends, it is rotatory at first under the effect of helicla flute to take place, also there is not the friction this moment, then descend to target in place and the disk seat cooperation again, whole in-process case all does not take place the friction with the disk seat when rotatory, greatly reduced the wearing and tearing of case, improve the sealing performance and the life of ball valve, and the simple structure of ball valve.

Preferably, the valve body is provided with an upper limit block for limiting the farthest position of the valve element when the valve element is lifted. The valve core is abutted with the upper limit block after rising for a certain distance, so that the rising limit position of the valve core is limited, and the valve core is prevented from rising excessively.

Preferably, the valve body is provided with a lower limit block, and the lower limit block is used for limiting the farthest position of the valve core when the valve core descends. The valve core is abutted with the lower limiting block after descending for a certain distance, so that the valve core is prevented from excessively descending.

Preferably, the cross-sectional area of the valve core decreases from top to bottom in sequence. The valve core is in a conical shape with a large upper part and a small lower part, so that the valve core can be automatically separated from the valve seat after being lifted, and the valve core cannot rub the valve seat when rotating, thereby reducing the abrasion of the valve core.

Preferably, the valve core, the valve rod and the guide pin are of an integrally molded structure. The integrated into one piece structure has improved the rigidity of case greatly, reduces the clearance when its equipment, ensures the sealing performance of ball valve.

Preferably, the valve seat is slidably disposed in the valve body, and a sliding direction of the valve seat is perpendicular to a lifting direction of the valve element. The valve seat is made to be movable, the valve core is abutted against the valve seat to close the ball valve when descending, tight contact between the valve core and the valve seat is ensured, and the water leakage phenomenon is prevented.

Preferably, a spring is arranged between the valve seat and the valve body, and the expansion direction of the spring is parallel to the sliding direction of the valve seat. The bounce of spring is used for compressing tightly the disk seat on the case, guarantees to contact closely between case and the disk seat.

The utility model has the advantages that: the valve core is separated from the valve seat when in a rotary switching state, no friction occurs between the valve core and the valve seat, the abrasion of the valve core is greatly reduced, the sealing performance of the ball valve is improved, the service life of the ball valve is prolonged, and the ball valve is simple in structure, stable in operation and high in reliability; the valve core, the valve rod and the guide pin are of an integrally formed structure, so that the rigidity of the valve core is greatly improved, the clearance during assembly is reduced, and the sealing performance of the ball valve is guaranteed; the valve seat is movable, and the valve core abuts against the valve seat to close the ball valve when descending, so that tight contact between the valve core and the valve seat is ensured, and the water leakage phenomenon is prevented.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the following drawings without inventive work.

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

FIG. 2 is an enlarged view taken at A of FIG. 1;

fig. 3 is an enlarged view of fig. 1 at B.

Reference numerals: the valve comprises a valve body 1, a guide sleeve 11, a vertical section 12, a spiral section 13, an upper limiting block 14, a lower limiting block 15, a valve seat 2, a valve core 3, a driving mechanism 4, a valve rod 5, a guide pin 51 and a spring 6.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

A frictionless ball valve according to an embodiment of the present invention will be described with reference to the accompanying drawings,

as shown in figures 1 to 3 of the drawings,

the utility model provides a frictionless ball valve, including valve body 1, be equipped with disk seat 2 and case 3 in the valve body, be equipped with drive valve core pivoted actuating mechanism 4 on the valve body, the case is elevating movement relative disk seat under actuating mechanism's drive, be fixed with vertical layout's valve rod 5 on the case, be equipped with the uide pin 51 that radially stretches out on the valve rod, be equipped with guide pin bushing 11 on the valve body, the valve rod activity sets up in the guide pin bushing, be equipped with the guide slot on the lateral wall of guide pin bushing, the guide slot includes vertical section 12, the upper end of vertical section upwards spirals and form spiral section 13, the uide pin. When actuating mechanism lifting case, the case rises one section distance earlier, the uide pin upward movement in vertical section this moment, when actuating mechanism continues the lifting case, the uide pin moves along the helicla flute, it is rotatory to order about the case, the on-off state of switching valve, because the case has risen one section distance when rotatory, can break away from the disk seat when rotatory this moment, wearing and tearing greatly reduced, and in the same way, when the case descends, it is rotatory at first under the effect of helicla flute to take place, also there is not the friction this moment, then descend to target in place and the disk seat cooperation again, whole in-process case all does not take place the friction with the disk seat when rotatory, greatly reduced the wearing and tearing of case, improve the sealing performance and the life of ball valve, and the simple structure of ball valve.

The valve body is provided with an upper limit block 14, the upper limit block is used for limiting the farthest position of the valve core when the valve core rises, the valve core is abutted against the upper limit block after rising for a certain distance, the limit position of the valve core when the valve core rises is limited, and the valve core is prevented from excessively rising. The valve body is provided with a lower limiting block 15, the lower limiting block is used for limiting the farthest position of the valve core when the valve core descends, and the valve core descends for a certain distance and then is abutted against the lower limiting block to prevent the valve core from excessively descending. The cross-sectional area of the valve core is reduced from top to bottom in sequence. The valve core is in a conical shape with a large upper part and a small lower part, so that the valve core can be automatically separated from the valve seat after being lifted, and the valve core cannot rub the valve seat when rotating, thereby reducing the abrasion of the valve core. The valve core, the valve rod and the guide pin are of an integrally formed structure, the integrally formed structure greatly improves the rigidity of the valve core, reduces gaps during assembly of the valve core, and guarantees the sealing performance of the ball valve.

The valve seat is arranged in the valve body in a sliding mode, the sliding direction of the valve seat is perpendicular to the lifting direction of the valve core, the valve seat is made to be movable, the valve core is abutted to the valve seat when falling to close the ball valve, tight contact between the valve core and the valve seat is guaranteed, and the water leakage phenomenon is prevented. A spring 6 is arranged between the valve seat and the valve body, the expansion direction of the spring is parallel to the sliding direction of the valve seat, the rebound force of the spring is used for pressing the valve seat on the valve core, tight contact between the valve core and the valve seat is ensured, and the spring is also used for resetting the valve seat.

The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. The utility model provides a frictionless ball valve, includes the valve body, is equipped with disk seat and case in the valve body, is equipped with on the valve body and drives valve core pivoted actuating mechanism, characterized by, the case is elevating movement relatively the disk seat under actuating mechanism's drive, is fixed with vertical layout's valve rod on the case, is equipped with the uide pin that radially stretches out on the valve rod, is equipped with the guide pin bushing on the valve body, and the valve rod activity sets up in the guide pin bushing, is equipped with the guide slot on the lateral wall of guide pin bushing, and the guide slot includes vertical section, and the upper end of vertical section upwards spirals and forms the.

2. The frictionless ball valve as claimed in claim 1, wherein the valve body is provided with an upper limit block for limiting the farthest position of the valve core when the valve core is lifted.

3. The frictionless ball valve as recited in claim 1, wherein the valve body is provided with a lower limit block for limiting the farthest position of the valve core when the valve core descends.

4. A frictionless ball valve as claimed in claim 1, wherein the cross-sectional area of the valve core decreases from top to bottom.

5. A frictionless ball valve as claimed in claim 1, wherein the core, stem and guide pin are of one-piece construction.

6. A frictionless ball valve as claimed in any one of claims 1 to 5 wherein the valve seat is slidably disposed within the valve body, the direction of the sliding of the valve seat being perpendicular to the direction of the lifting and lowering of the valve member.

7. A frictionless ball valve as claimed in claim 6, wherein a spring is provided between the valve seat and the valve body, the spring extending and retracting in a direction parallel to the sliding direction of the valve seat.