CN109185256B

CN109185256B - Ball valve

Info

Publication number: CN109185256B
Application number: CN201811401647.XA
Authority: CN
Inventors: 不公告发明人
Original assignee: Yatai Pump Valve Co ltd
Current assignee: YATAI PUMP VALVE Co.,Ltd.
Priority date: 2018-11-22
Filing date: 2018-11-22
Publication date: 2020-04-28
Anticipated expiration: 2038-11-22
Also published as: CN109185256A

Abstract

The invention provides a ball valve, comprising: the valve comprises a valve body, a valve core, a valve seat, a threaded sleeve, a magnetic conduction sleeve, an armature and a spring. The ball valve provided by the embodiment of the invention has the advantages of compact volume and simple structure, and can realize the control of the two-position four-way valve and reduce the processing cost and the use cost of the valve block.

Description

Ball valve

Technical Field

The invention relates to a ball valve, in particular to a two-position four-way ball valve.

Background

In modern mechanical equipment and hydraulic systems, a large number of hydraulic circuits with two-way cut-off are applied, wherein an electromagnetic ball valve is a key hydraulic component of the systems, and the performance of the electromagnetic ball valve directly influences the performance of a main machine. The existing electromagnetic ball valve is divided into a plate type electromagnetic ball valve and a plug-in type electromagnetic ball valve according to a connection mode, and the plug-in type electromagnetic ball valve is generally adopted in a system in order to reduce installation space and improve system reliability. The existing electromagnetic ball valve is generally a two-position two-way electromagnetic ball valve, for example, patent with application number CN201420702147.0 entitled "two-position two-way normally closed double check electromagnetic valve with screw insertion type" discloses a two-position two-way electromagnetic ball valve, but in practical application, most of the two-position two-way electromagnetic ball valves are two-position four-way hydraulic circuits, in order to meet the control requirement of two-position four-way, two-position two-way electromagnetic ball valves are required to be inserted into an integrated valve block, so two insertion holes need to be processed in the integrated valve block, the valve port processing cost is high, and because two electromagnetic ball valves are used and two electronic control components need to be configured, the costs of hydraulic components and electrical components are also increased.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the invention aims to provide the ball valve which is compact in size, simple in structure, low in manufacturing cost and capable of realizing two-position four-way control.

A ball valve according to an embodiment of the present invention includes:

the magnetic conduction sleeve is provided with a magnetic conduction sleeve blind hole with a downward opening;

the armature is arranged in the magnetic conductive sleeve blind hole in a sliding mode, and a T-shaped groove is formed in the lower end of the armature;

the coil is sleeved on the magnetic conduction sleeve;

the valve body is in threaded connection with the lower end of the magnetic sleeve blind hole, a first mounting hole, a communicating hole, a sliding hole and a second mounting hole are formed in the valve body from top to bottom, a first oil port communicated with the communicating hole, a second oil port communicated with the sliding hole and a third oil port communicated with the second mounting hole are formed in the side wall of the valve body, and the diameter of the sliding hole is smaller than that of the communicating hole and that of the second mounting hole;

the screw sleeve is fixedly connected in the first mounting hole, and a screw sleeve through hole which axially penetrates through the screw sleeve is formed in the screw sleeve;

the valve seat is in threaded connection with the second mounting hole and can be adjusted up and down, an axially-penetrating valve seat through hole is formed in the valve seat, a fourth oil port is formed at the lower end of the valve seat through hole, and an inner conical surface is arranged at the upper end of the valve seat through hole;

the valve core is arranged in the valve body in a vertically sliding manner and upwards penetrates through the thread sleeve through hole to extend into the magnetic sleeve blind hole, the valve core comprises a T-shaped head section hung in the T-shaped groove, a first sliding section in sliding fit with the thread sleeve through hole, a cone section matched with an upper opening of the sliding hole to control the sliding hole to be connected with the communicating hole in a switching manner and a second sliding section in sliding fit with the sliding hole and downwards extends into the second mounting hole, an annular communicating groove is arranged below the cone section on the second sliding section, the diameter of the first sliding section is equal to that of the second sliding section, the communicating groove is always communicated with the second oil port, and an axially-through hole is formed in the valve core;

the spring is arranged in the magnetic conduction sleeve blind hole, one end of the spring abuts against the bottom of the magnetic conduction sleeve blind hole, the other end of the spring abuts against the armature, the spring pushes the armature downwards to drive the cone section of the valve core to normally close the upper opening of the sliding hole, so that the first oil port and the second oil port are blocked and are not communicated, and at the moment, the lower end face of the second sliding section can simultaneously close the inner conical surface of the valve seat by vertically adjusting the valve seat to block the communication of the third oil port and the fourth oil port;

when the coil is electrified, the armature drives the valve core to overcome the acting force of the spring to move upwards, the upper opening of the sliding hole is opened by the cone section, the first oil port is communicated with the second oil port through the communicating groove, and meanwhile, the inner conical surface of the valve seat is opened by the lower end surface of the second sliding section, so that the third oil port is communicated with the fourth oil port.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic structural diagram of a ball valve according to one embodiment of the present invention;

FIG. 2 is a schematic structural view of a valve body of a ball valve according to an embodiment of the present invention;

FIG. 3 is a schematic illustration of a valve cartridge configuration for a ball valve according to an embodiment of the present invention;

fig. 4 is a schematic view of a valve seat structure of a ball valve according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A ball valve according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 4, a ball valve according to an embodiment of the present invention includes: the valve comprises a valve body 1, a valve core 2, a valve seat 3, a threaded sleeve 4, a magnetic sleeve 5, an armature 6, a spring 7 and a coil 8.

Specifically, the flux sleeve 5 has a flux sleeve blind hole with a downward opening.

The armature 6 is arranged in the blind hole of the magnetic conductive sleeve in a sliding way, and the lower end of the armature 6 is provided with a T-shaped groove.

The coil 8 is sleeved on the magnetic conductive sleeve 5.

The valve body 1 is in threaded connection with the lower end of the blind hole of the magnetic sleeve, a first mounting hole 101, a communicating hole 102, a sliding hole 103 and a second mounting hole 104 are arranged in the valve body 1 from top to bottom, a first oil port P communicated with the communicating hole 102, a second oil port A communicated with the sliding hole 103 and a third oil port B communicated with the second mounting hole 104 are arranged on the side wall of the valve body 1, and the diameter of the sliding hole 103 is smaller than that of the communicating hole 102 and the second mounting hole 104.

The thread insert 4 is fixedly connected in the first mounting hole 101, and a thread insert through hole which axially penetrates through is formed in the thread insert 4.

The threaded connection that the valve seat 3 can be adjusted from top to bottom is in the second mounting hole 104, a valve seat through hole 31 that axially penetrates is arranged in the valve seat 3, the lower end of the valve seat through hole 31 forms a fourth oil port T, and the upper end of the valve seat through hole 31 is provided with an inner conical surface 311.

The valve core 2 is arranged in the valve body 1 in a vertically sliding mode and upwards penetrates through the thread sleeve through hole to extend into the magnetic sleeve blind hole, the valve core 2 comprises a T-shaped head section 201 hung in the T-shaped groove 61, a first sliding section 202 in sliding fit with the thread sleeve through hole, a cone section 203 matched with an upper opening of the sliding hole 103 to control the sliding hole 103 and the communicating hole 102 to be opened and closed, and a second sliding section 204 in sliding fit with the sliding hole 103 and downwards extends into the second mounting hole 104, an annular communicating groove 2041 is formed in the second sliding section 204 and is arranged below the cone section 203, the diameter of the first sliding section 205 is equal to that of the second sliding section 204, the communicating groove is always communicated with a 2041 second oil port A, and an axially-through flow hole 205 is formed in the valve core 2.

Spring 7 is established in the flux sleeve blind hole, and spring 7 one end supports the bottom at the flux sleeve blind hole, and the other end supports on armature 6, and spring 7 normally promotes armature 6 downwards to normally close the upper shed of sliding hole 103 with the cone section 203 that drives case 2 to make first hydraulic fluid port P and second hydraulic fluid port A cut off not logical, and at this moment, can make the lower terminal surface of second sliding segment 204 seal the interior conical surface 311 of disk seat 3 simultaneously with the intercommunication of cutting off third hydraulic fluid port B and fourth hydraulic fluid port T through adjusting disk seat 3 from top to bottom.

When the coil 8 is electrified, the armature 6 drives the valve core 2 to move upwards against the acting force of the spring 7, the cone section 203 opens the upper opening of the sliding hole 103, so that the first oil port P is communicated with the second oil port a through the communicating groove 2041, and meanwhile, the lower end face of the second sliding section 204 opens the inner conical surface 311 of the valve seat 3, so that the third oil port B is communicated with the fourth oil port T.

The working principle according to an embodiment of the invention is briefly described below with reference to the accompanying drawings:

since the diameter of the first sliding section 205 is equal to the diameter of the second sliding section 204, the resultant of the acting forces of the first oil port P on the spool 2 is 0; the resultant force of the acting forces of the second oil port A on the valve core 2 is 0; the resultant force of the acting force of the third oil port B on the valve core 2 is also 0; because the fourth oil port T is communicated with the blind hole of the magnetic conductive sleeve through the through hole 205 and the diameter of the first sliding section 205 is equal to the diameter of the second sliding section 204, the resultant force of the acting force of the fourth oil port T on the valve core 2 is also 0. The valve core 2 is only under the acting force of the spring 7 and the attraction of the magnetic sleeve 5 to the armature 6 when the coil 8 is electrified.

When the coil 8 is not charged, as shown in fig. 1, under the pushing of the spring 7, the valve core 2 is at the position shown in fig. 1, the first oil port P and the second oil port a are blocked and are not communicated, and the third oil port B and the fourth oil port T are blocked and are not communicated. The advantage of the present invention in that the valve seat 3 is arranged to be adjustable up and down is that: because the cone section 203 is to close the upper opening of the sliding hole 103 and the lower end surface of the second sliding section 204 is to close the inner conical surface 311 of the valve seat 3, if the valve seat 3 is stationary, the axial dimension control is difficult to meet in actual processing, the first oil port P and the second oil port a are blocked but the third oil port B and the fourth oil port T are communicated, or the first oil port P and the second oil port a are communicated but the third oil port B and the fourth oil port T are blocked, so that the finished product qualification rate is low and a large number of parts are scrapped; the valve seat 3 can be adjusted up and down, so that the requirement on the machining precision is lowered, the valve seat 3 can be screwed to the lowest end firstly in assembly, the first oil port P and the second oil port A are kept sealed firstly, then the valve seat 3 is screwed upwards, the inner conical surface 311 of the valve seat is in contact with the lower end surface of the second sliding section 204 to realize sealing, and the qualified rate of finished products can be greatly improved.

The invention has the beneficial effects that: the two-position four-way electromagnetic ball valve has a simple structure and a compact volume, can realize the control of two-position four-way through one valve, reduces the processing cost of a valve block and the cost of a hydraulic element and an electric element compared with the prior art that two-position two-way electromagnetic ball valves are adopted, and can reliably ensure the reliable stop between the first oil port and the second oil port and between the third oil port and the fourth oil port through the arrangement of the valve seat which can be adjusted up and down, thereby greatly improving the qualification rate of finished products and reducing the processing difficulty.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although the embodiments of the present invention have been shown and described, it is understood that the embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the embodiments without departing from the scope of the present invention.

Claims

1. A ball valve, comprising:

the coil is sleeved on the magnetic conduction sleeve;