CN211474952U - Press from reset change valve and distribution valve thereof - Google Patents

Abstract

The utility model discloses a press from reset reversal valve and distribution valve thereof, including valve body, case and drive assembly, drive assembly includes spring, valve gap and valve cap, and the one side of keeping away from the switching-over end on the valve body is provided with the spring mounting hole, and the one end of keeping away from the switching-over end on the case contacts with the one end of valve cap after passing the spring mounting hole, and the one end that is close to the valve cap on the lateral wall of case evades outward and becomes the installation step, and the spring is located in the spring mounting hole and overlaps and establishes on the case, and its both ends contact with the hole bottom and the installation step of spring mounting hole respectively; one end of the valve cover is connected with one end of the valve body, which is far away from the reversing end, the valve cover is positioned on the inner side of the valve cover, one end of the valve cover, which is close to the valve core, protrudes outwards to form a blocking step, and the other end of the valve cover movably penetrates through one side of the valve cover, which is far away from the valve body. The utility model avoids the condition of incomplete reversing caused by the blind operation of the conventional reversing valve; and the reversing can be completed by pressing, the operation is simple and rapid, and the reversing stroke is small.

Description

Press from reset change valve and distribution valve thereof

Technical Field

The utility model relates to a switching-over valve technical field, concretely relates to press from reset switching-over valve and distributing valve thereof.

Background

The dispensing valve is a valve commonly used in various apparatuses, and functions to connect and dispense. In a fluid system, each branch pipe is connected to a main pipe through a distribution valve, and the main pipe distributes fluid to each bypass pipe through the distribution valve. The distribution valve is provided with a reversing valve for delivering the fluid to the corresponding demand station according to the demand of each time interval.

The reversing valve is a directional control valve with more than two flow forms and more than two oil ports. The reversing valve is a valve for realizing communication, cutting off and reversing of hydraulic oil flow, pressure unloading and sequential action control. The change valve controls the switching of the valve state by controlling the relative position of the valve core and the valve body. At present, the reversing valve adopted on the branch gas passage of the distributing valve has simple structure, incomplete gas reversing, large reversing stroke and long reversing operation time, and the valve can complete the reversing action only by being adjusted to a certain degree.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the pressing self-resetting reversing valve and the distributing valve thereof are provided, and the technical problems that the reversing valve used on the distributing valve is not thorough in reversing and long in reversing operation time in the prior art are solved. The utility model discloses a switching-over valve easy operation is quick, can accomplish thoroughly switching-over in the twinkling of an eye.

The product is used for realizing the conversion of the pipeline through control,

the utility model adopts the technical scheme as follows:

a press from reset reversing valve, includes that valve body, one end insert the case in the valve pocket of valve body and drive the case and move and control the drive assembly of valve pocket connected state along self axis, drive assembly includes spring, valve gap and valve cap, one side of keeping away from the switching-over end on the valve body is provided with the spring mounting hole, one end of keeping away from the switching-over end on the case passes the spring mounting hole after and contacts with the one end of valve cap, and the one end evagination that is close to the valve cap on the lateral wall of case becomes the installation step, the spring is arranged in the spring mounting hole and overlaps and establish on the case, its both ends contact with the hole bottom and the installation step of spring mounting hole respectively; one end of the valve cap is connected with one end, far away from the reversing end, of the valve body, the valve cap is located on the inner side of the valve cap, one end, close to the valve core, of the valve cap protrudes outwards to form a blocking step, and the other end of the valve cap movably penetrates through one side, far away from the valve body, of the valve cap.

Furthermore, one end of the valve body, which is far away from the reversing end, is inserted into the inner side of the valve cover and is in threaded connection with the inner wall of the valve cover.

Further, the inner hole of the valve cover is a secondary stepped hole, the small-diameter hole of the valve cover is close to the valve body and is a threaded hole, and the large-diameter hole of the valve cover is in clearance fit with the blocking step.

Furthermore, one side of the valve body, which is far away from the reversing end, is provided with a yielding hole which is coaxial with the spring mounting hole, and the aperture of the yielding hole is larger than the outer diameter of the mounting step.

Furthermore, two groups of vent hole groups which are communicated with the valve cavity are arranged on the valve body along the axis of the valve core, and each group of vent hole groups comprises a plurality of vent holes which are centrosymmetric along the axis of the valve core; an annular groove is arranged on the side wall of the valve core, and the axis of the annular groove is superposed with the axis of the valve core;

when the spring is in the original state, the two groups of vent holes are communicated with the annular groove;

when the spring is in a compressed state, one end of the valve core, which is far away from the valve cap, penetrates out of the valve cavity, and the annular groove communicates the vent hole group, which is far away from the spring, with the outside of one end, which is far away from the spring, of the valve body.

Furthermore, a tapered hole with the axis coincident with the axis of the valve core is arranged at one end, far away from the spring, of the valve body, and the small-diameter end of the tapered hole is communicated with the valve cavity.

A distribution valve comprises a distribution valve body and a reversing valve arranged on a main air passage of the distribution valve body, wherein the reversing valve comprises a valve body, a valve core and a driving assembly, one end of the valve core is inserted into a valve cavity of the valve body, the driving assembly drives the valve core to move along the axis of the driving assembly and controls the communication state of the valve cavity, the driving assembly comprises a spring, a valve cover and a valve cap, a spring mounting hole is formed in one side, far away from a reversing end, of the valve body, one end, far away from the reversing end, of the valve core penetrates through the spring mounting hole and then contacts with one end of the valve cap, in addition, one end, close to the valve cap, of the side wall of the valve core protrudes outwards to form a mounting step, the spring is positioned in the spring; one end of the valve cover is connected with one end of the valve body, which is far away from the reversing end, the valve cover is positioned on the inner side of the valve cover, one end of the valve cover, which is close to the valve core, protrudes outwards to form a blocking step, and the other end of the valve cover movably penetrates through one side of the valve cover, which is far away from the valve body;

two groups of vent hole groups which are communicated with the valve cavity are arranged on the valve body along the axis of the valve core, and each group of vent hole groups comprises a plurality of vent holes which are centrosymmetric along the axis of the valve core; an annular groove is arranged on the side wall of the valve core, and the axis of the annular groove is superposed with the axis of the valve core;

when the spring is in the original state, the two groups of vent holes are communicated with the annular groove;

when the spring is in a compressed state, one end of the valve core, which is far away from the valve cap, penetrates out of the valve cavity, and the annular groove communicates the vent hole group, which is far away from the spring, with the outside of one end of the valve body, which is far away from the spring;

one end of the valve body, which is far away from the valve cap, is inserted into the main air passage and is in threaded sealing connection with the main air passage.

Due to the adoption of the technical scheme, the beneficial effects of the utility model are that:

1. the utility model relates to a press from reset reversal valve and distribution valve thereof, can carry out the switching-over action of reversal valve fast and thoroughly through pressing, confirm that the case is in the correct switching-over position through the spacing hindrance mode of the tip contact of installation step and valve body, avoided the blind operation of conventional reversal valve to lead to the fact the situation of the incomplete switching-over to appear; the reversing can be completed by pressing, the operation is simple and rapid, and the reversing stroke is small;

2. the utility model relates to a press from reset reversal valve and distribution valve thereof, when the ring channel is needed to communicate the vent hole group with the outside of the end of the valve body 1 away from the spring, the end of the valve core away from the valve cap needs to penetrate out of the valve cavity, and the sealing ring at the end also penetrates out of the valve cavity, and the sealing ring is originally in interference fit with the valve cavity and is in a pressed state, and after leaving the valve cavity, the sealing ring is recovered to the original state; in the process of return stroke, the sealing ring which is restored to the original state can be subjected to extrusion abrasion from the valve cavity inlet; after the buffering inclined plane is arranged, the sealing ring can be compressed through the inclined plane, the smooth transition of the sealing ring from an original state to a compression state matched with the valve cavity is realized, and the abrasion of the sealing ring is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts, and the proportional relationship of each component in the drawings in the present specification does not represent the proportional relationship in the actual material selection design, and is only a schematic diagram of the structure or the position, in which:

FIG. 1 is a schematic view of a push-on self-resetting reversing valve;

FIG. 2 is a cross-sectional view of a depressed self-resetting reversing valve;

FIG. 3 is a schematic view of the structure of the self-resetting directional control valve pressed when the spring is compressed;

FIG. 4 is an exploded view of the self-resetting reversing valve being depressed;

FIG. 5 is a schematic view of the structure of the dispensing valve;

fig. 6 is a schematic view of the position of the self-resetting reversing valve pressed onto the dispensing valve.

Reference numerals in the drawings indicate:

1-valve body, 2-valve cavity, 3-valve core, 4-spring, 5-valve cover, 6-valve cap, 7-spring mounting hole, 8-mounting step, 9-blocking step, 10-abdicating hole, 11-vent hole, 12-annular groove, 13-conical hole, 14-distribution valve body, 15-main air channel, 16-sealing ring sleeved on valve body, 17-sealing ring sleeved on valve core, 18-plane.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

The term "connected" as used herein is intended to mean a conventional connection, such as integrally formed, welded, riveted, etc., if not specifically emphasized, and the specific connection is preferably adapted according to conventional technical knowledge in the art. All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The present invention will be described in detail with reference to fig. 1 to 6.

Example 1

As shown in fig. 1-6, the utility model relates to a press from reset reversing valve, including valve body 1, one end insert case 3 in valve pocket 2 of valve body 1 and drive valve core 3 along the drive assembly of self axis removal and control valve pocket 2 intercommunication state, drive assembly includes spring 4, valve gap 5 and valve cap 6, be provided with spring mounting hole 7 on one side of keeping away from the switching-over end on the valve body 1, one end of keeping away from the switching-over end on the valve core 3 passes behind spring mounting hole 7 and contacts with one end of valve cap 6, and the one end that is close to valve cap 6 on the lateral wall of valve core 3 evaginates into installation step 8, spring 4 is located in spring mounting hole 7 and overlaps and establishes on valve core 3, its both ends respectively with the hole bottom of spring mounting hole 7 and installation step 8 contact; one end of the valve cover 5 is connected with one end of the valve body 1, which is far away from the reversing end, the valve cap 6 is positioned on the inner side of the valve cover 5, one end of the valve cap, which is close to the valve core 3, protrudes outwards to form a blocking step 9, and the other end of the valve cap movably penetrates through one side of the valve cover 5, which is far away from the valve body 1.

The stop step 9 prevents the bonnet 6 from moving outward and out of the bonnet 5. The valve body 1, the valve core 3, the spring 4, the bonnet 5 and the bonnet 6 are preferably all bodies of revolution. A sealing ring is arranged between the valve core 3 and the valve cavity 2 according to the conventional technical means of the valve, and is used for ensuring the sealing property between the valve core 3 and the valve cavity 2, as shown in figures 2-3.

The installation step on the valve body and the limiting step on the valve cover are used for preventing overtravel, and the installation is convenient to achieve in one step.

When the valve is used, one end of the valve body 1, which is far away from the valve cap 6, is screwed into a main channel of the distribution valve, and a sealing ring for improving the matching sealing performance of the valve body 1 and the main channel is also arranged between the valve body 1 and the main channel, as shown in fig. 2, 3 and 6, when the direction needs to be changed, the valve cap 6 is pressed down, the valve core 3 is pushed by the valve cap 6 to move, the spring 4 is compressed on the hole bottom of the spring mounting hole 7 by the mounting step 8 on the valve core 3 to switch the open state of the direction-changing valve, at the moment, the mounting step 8 is preferably contacted with the end part of the valve body 1, and after the work is finished, the valve core 3 can be restored to the original position.

When the reversing valve is used, the reversing action of the reversing valve can be rapidly and thoroughly carried out by pressing, the valve core is clearly positioned at the correct reversing position by the limiting blocking mode that the mounting step 8 is contacted with the end part of the valve body 1, and the condition that the reversing is not complete due to the blind operation of the conventional reversing valve is avoided; and the reversing can be completed by pressing, the operation is simple and rapid, and the reversing stroke is small. The pressing operation may be performed manually, or may be performed by providing a pneumatic cylinder type driving mechanism or a diaphragm type driving device.

Example 2

The present embodiment is further described with reference to embodiment 1.

As shown in fig. 2 and 3, in the present invention, the end of the valve body, which is far away from the reversing end, is inserted into the inner side of the valve cover 5 and is connected with the inner wall thread of the valve cover 5.

The assembly method of the reversing valve comprises the following steps: firstly, sleeving a spring 4 on the valve core 3 from one end of the valve core 3 far away from the installation step; then, the sealing ring is sleeved on the valve core 3 and is placed in an annular sealing groove arranged on the circumferential wall of the valve core 3; then, one end of the valve core 3, which is far away from the installation step, penetrates through the spring installation hole 7 and then is inserted into the valve cavity, and a sealing ring installed on the valve core is tightly contacted with the wall of the valve cavity so as to realize sealing fit; then the valve cap 6 is put into the valve cap 5, and one end of the valve cap 6 far away from the blocking step 9 penetrates out of one side of the valve cap 5 far away from the opening; then gluing and screwing the threaded matching part of the valve cover 5 and the valve body 1; and finally, a matched sealing ring is arranged in an annular sealing groove arranged on the outer circumferential wall of the valve body.

In order to further increase the ease of assembly, symmetrical milled-out surfaces 18 are provided on the circumferential outer wall of the valve body 1.

The reversing valve is assembled in a modular mode, the assembly is simpler due to the integrated valve body, and the valve core is made of high-strength materials to prevent the valve core from being damaged and broken. The assembly is simple and easy to operate, and the installation limit and the stroke limit are arranged at each position to achieve a better limit effect.

Further, the inner hole of the valve cover 5 is a secondary stepped hole, the small-diameter hole of the valve cover is close to the valve body 1 and is a threaded hole, and the large-diameter hole of the valve cover is in clearance fit with the blocking step 9. The joint of the large-diameter hole and the small-diameter hole in the inner hole of the valve cover 5 forms a limiting step for screwing the valve cover 5 when the valve cover 5 is in threaded connection with the valve body 1.

Further, a yielding hole 10 coaxial with the spring mounting hole 7 is formed in one side, far away from the reversing end, of the valve body 1, and the aperture of the yielding hole 10 is larger than the outer diameter of the mounting step 8.

The arrangement of the abdicating hole 10 reduces the axial size of the reversing valve on the basis of ensuring that the valve core 3 has enough movement formation.

Example 3

The reversing valve is provided with a valve cavity, and one reversing end of the valve cavity is arranged on the reversing valve. The embodiment is to explain the specific implementation structure of the commutation end.

As shown in fig. 2 to 3, in the present invention, two sets of vent hole groups are disposed on the valve body 1 along the axis of the valve element 3, and both the two sets of vent hole groups are communicated with the valve cavity 2, and each set of vent hole group includes a plurality of vent holes 11 which are centrosymmetric along the axis of the valve element 3; an annular groove 12 is arranged on the side wall of the valve core 3, and the axis of the annular groove 12 is superposed with the axis of the valve core 3;

when the spring 4 is in the original state, the two groups of vent holes are communicated with the annular groove 12;

when the spring 4 is in a compressed state, one end of the valve core 3 far away from the valve cap 6 penetrates out of the valve cavity 2, and the annular groove 12 communicates the vent hole group far away from the spring 4 with the outside of one end of the valve body 1 far away from the spring 4.

The set of ventilation holes preferably comprises four ventilation holes, a plurality of which can increase the throughput of fluid to make the ventilation more adequate.

Furthermore, a tapered hole 13 with the axis coinciding with the axis of the valve core 3 is arranged at one end of the valve body 1 far away from the spring 4, and the small-diameter end of the tapered hole 13 is communicated with the valve cavity 2. The tapered bore 13 forms a buffer ramp at the end of the valve body 1 to reduce seal wear. Specifically, when the annular groove 12 is needed to communicate the vent hole group with the outside of one end of the valve body 1, which is far away from the spring 4, one end of the valve core, which is far away from the valve cap 6, needs to penetrate through the valve cavity, and the sealing ring at the end also penetrates through the valve cavity, and the sealing ring is originally in interference fit with the valve cavity and is in a pressed state, and after leaving the valve cavity, the sealing ring is restored to the original state; in the process of return stroke, the sealing ring which is restored to the original state can be subjected to extrusion abrasion from the valve cavity inlet; after the buffering inclined plane is arranged, the sealing ring can be compressed through the inclined plane, the smooth transition of the sealing ring from an original state to a compression state matched with the valve cavity is realized, and the abrasion of the sealing ring is reduced.

Preferably, three annular gasket grooves are provided on the valve core, the annular gasket grooves being staggered with sets of vent holes, i.e. one set of vent holes is located between two gaskets, as shown in fig. 2 and 3. The distribution form of the three annular sealing ring grooves on the valve body is the same as the sewing of the annular sealing ring grooves on the valve core.

Example 4

A distribution valve comprises a distribution valve body 14 and a reversing valve arranged on a main air passage 15 of the distribution valve body 14, wherein the reversing valve comprises a valve body 1, a valve core 3 with one end inserted into a valve cavity 2 of the valve body 1 and a driving assembly driving the valve core 3 to move along the axis of the valve core 3 and controlling the communication state of the valve cavity 2, the driving assembly comprises a spring 4, a valve cover 5 and a valve cap 6, a spring mounting hole 7 is formed in one side of the valve body 1 far away from the reversing end, one end of the valve core 3 far away from the reversing end penetrates through the spring mounting hole 7 and then contacts with one end of the valve cap 6, one end of the side wall of the valve core 3 close to the valve cap 6 protrudes outwards to form a mounting step 8, the spring 4 is positioned in the spring mounting hole 7 and sleeved on the valve core 3, and the two ends of the spring 4 are; one end of the valve cover 5 is connected with one end of the valve body 1, which is far away from the reversing end, the valve cap 6 is positioned at the inner side of the valve cover 5, one end of the valve cap, which is close to the valve core 3, protrudes outwards to form a blocking step 9, and the other end of the valve cap movably penetrates through one side, which is far away from the valve body 1, of the valve cover 5;

two groups of vent hole groups which are communicated with the valve cavity 2 are arranged on the valve body 1 along the axis of the valve core 3, and each group of vent hole groups comprises a plurality of vent holes 11 which are centrosymmetric along the axis of the valve core 3; an annular groove 12 is arranged on the side wall of the valve core 3, and the axis of the annular groove 12 is superposed with the axis of the valve core 3;

when the spring 4 is in the original state, the two groups of vent holes are communicated with the annular groove 12;

when the spring 4 is in a compressed state, one end of the valve core 3, which is far away from the valve cap 6, penetrates out of the valve cavity 2, and the annular groove 12 communicates a vent hole group, which is far away from the spring 4, with the outside of one end of the valve body 1, which is far away from the spring 4;

one end of the valve body 1 far away from the valve cap 6 is inserted into the main air passage 15 and is in threaded sealing connection with the main air passage 15.

When the spring 4 is in a free position, the two groups of vent holes are communicated with each other through the annular groove 12, so that a vent effect is achieved; when the direction needs to be changed, the valve cap 6 is pressed down to compress the spring 4, so that the connection of the vent hole group and the end part can be achieved, and the hand can be loosened to return to the original position through the spring after the work is finished.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can be covered within the protection scope of the present invention without the changes or substitutions conceived by the inventive work within the technical scope disclosed by the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (7)

1. The utility model provides a press from reset reversing valve, includes valve body (1), case (3) and drive valve core (3) that one end was inserted in valve pocket (2) of valve body (1) and move and control the drive assembly of valve pocket (2) feed through state along self axis, its characterized in that: the driving assembly comprises a spring (4), a valve cover (5) and a valve cap (6), a spring mounting hole (7) is formed in one side, far away from the reversing end, of the valve body (1), one end, far away from the reversing end, of the valve core (3) penetrates through the spring mounting hole (7) and then contacts with one end of the valve cap (6), one end, close to the valve cap (6), of the side wall of the valve core (3) protrudes outwards to form a mounting step (8), the spring (4) is located in the spring mounting hole (7) and sleeved on the valve core (3), and two ends of the spring (4) are respectively in contact with the hole bottom of the spring mounting hole (7) and the mounting step (8); the one end of valve gap (5) is connected with the one end of keeping away from the switching-over end on valve body (1), valve cap (6) are located valve gap (5) inboard, and its one end evagination that is close to case (3) becomes to block step (9), and its other end activity runs through the one side of keeping away from valve body (1) on valve gap (5).

2. A push-on self-resetting reversing valve according to claim 1, wherein: one end of the valve body, which is far away from the reversing end, is inserted into the inner side of the valve cover (5) and is in threaded connection with the inner wall of the valve cover (5).

3. A push-on self-resetting reversing valve according to claim 2, wherein: the inner hole of the valve cover (5) is a secondary stepped hole, a small-diameter hole of the valve cover is close to the valve body (1) and is a threaded hole, and a large-diameter hole of the valve cover is in clearance fit with the blocking step (9).

4. A push-on self-resetting reversing valve according to claim 1, wherein: one side of keeping away from the switching-over end on valve body (1) is provided with and the coaxial hole of stepping down (10) of spring mounting hole (7), the aperture of the hole of stepping down (10) is greater than the external diameter of installation step (8).

5. A push-on self-resetting reversing valve according to any one of claims 1 to 4, wherein: two groups of vent hole groups which are communicated with the valve cavity (2) are arranged on the valve body (1) along the axis of the valve core (3), and each group of vent hole groups comprises a plurality of vent holes (11) which are centrosymmetric along the axis of the valve core (3); an annular groove (12) is formed in the side wall of the valve core (3), and the axis of the annular groove (12) is overlapped with the axis of the valve core (3);

when the spring (4) is in the original state, the two groups of vent holes are communicated with the annular groove (12);

when the spring (4) is in a compressed state, one end of the valve core (3) far away from the valve cap (6) penetrates out of the valve cavity (2), and the annular groove (12) is communicated with the outside of one end of the valve body (1) far away from the spring (4) through a vent hole group far away from the spring (4).

6. A push-on self-resetting reversing valve according to claim 5, wherein: one end of the valve body (1) far away from the spring (4) is provided with a conical hole (13) with the axis coincident with that of the valve core (3), and the small-diameter end of the conical hole (13) is communicated with the valve cavity (2).

7. A dispensing valve comprising a dispensing valve body (14) and a diverter valve mounted on a main air passage (15) of the dispensing valve body (14), characterized in that: the reversing valve is as claimed in any one of claims 5 or 6, and one end of the valve body (1) far away from the valve cap (6) is inserted into the main air passage (15) and is in threaded sealing connection with the main air passage (15).

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