CN216407331U

CN216407331U - Five-cavity structure of hydraulic electromagnetic valve

Info

Publication number: CN216407331U
Application number: CN202123178876.XU
Authority: CN
Inventors: 周世杰
Original assignee: Dongguan Shikun Hydraulic Co ltd
Current assignee: Dongguan Shikun Hydraulic Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-04-29
Anticipated expiration: 2031-12-15

Abstract

The utility model discloses a five-cavity structure of a hydraulic electromagnetic valve, which comprises a valve body, a sliding channel and a movable valve core, wherein the sliding channel is provided with an oil inlet hole, an oil outlet hole, a first adjusting hole and a second adjusting hole, when the valve core is in a first state, the oil inlet hole is communicated with the oil outlet hole, when the valve core is in a second state, the first adjusting hole is communicated with the second adjusting hole, the valve body is also provided with a circulating channel, and when the valve core is switched from the first state to the second state, fluid in the oil outlet hole can flow back to the oil inlet hole from the circulating channel. Thereby form five relatively independent fluid chambeies through set up inlet port, oil outlet, first regulation hole, second regulation hole and circulation channel at sliding channel to can realize the accurate control to hydraulic pressure intensity, reduce resistance and the movement error that produces the case displacement when first state and second state switch, influence hydraulic pressure intensity's control, also reduced electromagnetic means's wearing and tearing simultaneously and improved hydraulic solenoid valve's life.

Description

Five-cavity structure of hydraulic electromagnetic valve

Technical Field

The utility model relates to the field of hydraulic electromagnetic valves, in particular to a five-cavity structure of a hydraulic electromagnetic valve.

Background

The hydraulic electromagnetic valve is an element used for controlling the pressure, flow and direction of the liquid in the hydraulic transmission. The pressure control valve is used for controlling pressure, the flow control valve is used for controlling flow, and the direction control valve is used for controlling on, off and flow direction. The hydraulic reversing valve is divided into the following parts according to the number of passages held by the reversing valve: two-way, three-way, four-way, five-way, etc. The absolute movement of the valve body is staggered by the valve core, so that the oil way is communicated, closed or the direction of oil flowing is changed, and the bearing, the ending or the movement direction of the hydraulic pressure fulfillment element and the driving mechanism thereof is changed.

However, the runner of current hydraulic solenoid valve only is generally equipped with the sprue and locates the inlet port of sprue, oil outlet and first regulation hole and second regulation hole, when first regulation hole and second regulation hole need communicate, make the case motion can realize, but because the case can drive some fluid motion in the motion process, vacuum or the too much condition of fluid appear in the oil outlet probably to cause, and then influenced the reseing of case, hydraulic solenoid valve's work has been influenced, can cause electromagnetic means's damage even (unable reseing leads to electromagnetic means to burn out).

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a five-cavity structure of a hydraulic electromagnetic valve, aiming at improving the structure of the hydraulic electromagnetic valve, avoiding the problem of valve core movement caused by the fact that an oil outlet hole is vacuumized or excessive in fluid, improving the flow rate of the fluid and improving the accuracy of hydraulic control.

In order to achieve the purpose, the utility model provides a five-cavity structure of a hydraulic solenoid valve, which comprises a valve body, a sliding channel arranged on the valve body and a valve core capable of moving along the length direction of the sliding channel, wherein the sliding channel is provided with an oil inlet hole, an oil outlet hole, a first adjusting hole and a second adjusting hole, the oil inlet hole is communicated with the oil outlet hole when the valve core is in a first state, the first adjusting hole is communicated with the second adjusting hole when the valve core is in a second state, the valve body is also provided with a circulating channel for communicating the oil inlet hole with the oil outlet hole, and when the valve core is switched from the first state to the second state, fluid in the oil outlet hole can flow back to the oil inlet hole from the circulating channel.

Preferably, the sliding channel is provided with an inward convex partition part, and the partition part forms a first chamber, a second chamber, a third chamber and a fourth chamber and is respectively connected with the oil outlet hole, the second adjusting hole, the first adjusting hole and the oil inlet hole.

Preferably, both sides of the end portion of the partition are arranged in a stepped shape.

Preferably, the cross section of the circulation channel is in a circular hole shape or a flat strip shape.

Preferably, the circulation passage includes a transverse portion and connecting portions extending from both ends of the transverse portion in an arc shape, and the connecting portions are connected with the oil inlet hole and the oil outlet hole, respectively.

Preferably, a buffer cavity is arranged between the second cavity and the third cavity.

Preferably, both ends of the sliding channel are provided with threaded holes.

Preferably, inlet port, oil outlet, first regulation hole, the equal vertical setting in second regulation hole.

Preferably, the valve element is provided with a sealing portion cooperating with the partition.

According to the technical scheme, the oil inlet hole, the oil outlet hole, the first adjusting hole, the second adjusting hole and the circulating channel are arranged in the sliding channel, so that five relatively independent fluid cavities are formed, the hydraulic strength can be accurately controlled, the resistance and the movement error generated by the displacement of the valve core when the first state and the second state are switched are reduced, the control of the hydraulic strength is influenced, meanwhile, the abrasion of an electromagnetic device is reduced, and the service life of the hydraulic electromagnetic valve is prolonged.

Drawings

FIG. 1 is a half sectional view in half section of a valve body;

FIG. 2 is a half sectional view of the present invention;

fig. 3 is a schematic structural diagram of the valve body.

In the drawing, 1 is a valve body, 2 is a slide passage, 21 is a lateral portion, 22 is a connecting portion, 3 is a partition portion, 4 is a valve core, 51 is an oil inlet hole, 52 is an oil outlet hole, 53 is a first regulation hole, 54 is a second regulation hole, 55 is a circulation passage, 61 is a first chamber, 62 is a second chamber, 63 is a third chamber, 64 is a fourth chamber, and 65 is a buffer chamber.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that if directional indications (such as … …, which is up, down, left, right, front, back, top, bottom, inner, outer, vertical, transverse, longitudinal, counterclockwise, clockwise, circumferential, radial, axial) are provided in the embodiments of the present invention, the directional indications are only used for explaining the relative position relationship, motion condition, etc. of the components at a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first" or "second", etc. in the embodiments of the present invention, the description of "first" or "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 3, a five-chamber structure of a hydraulic solenoid valve includes a valve body 1, a sliding passage 2 provided in the valve body 1, and a spool 4 movable in a length direction of the sliding passage 2, the sliding passage 2 is provided with an oil inlet hole 51, an oil outlet hole 52, and a first regulation hole 53 and a second regulation hole 54, the oil inlet hole 51 and the oil outlet hole 52 are communicated when the spool 4 is in a first state, the first regulation hole 53 and the second regulation hole 54 are communicated when the spool 4 is in a second state, the valve body 1 is further provided with a circulation passage communicating the oil inlet hole 51 and the oil outlet hole 52, and when the spool 4 is switched from the first state to the second state, fluid in the oil outlet hole 52 can flow back from the circulation passage to the oil inlet hole 51.

Thereby form five relatively independent fluid chambeies through set up inlet port 51, oil outlet 52, first regulation hole 53, second regulation hole 54 and circulation channel at slide channel 2 to can realize the accurate control to hydraulic pressure intensity, reduce resistance and the removal error that produces the spool 4 displacement when first state and second state switch, influence hydraulic pressure intensity's control, also reduced electromagnetic means's wearing and tearing simultaneously and improved hydraulic solenoid valve's life.

In the embodiment of the present invention, the slide passage 2 is provided with an inwardly protruding partition 3, and the partition 3 forms a first chamber 61, a second chamber 62, a third chamber 63, and a fourth chamber 64, and is connected to the oil outlet hole 52, the second regulation hole 54, the first regulation hole 53, and the oil inlet hole 51, respectively. Thereby achieving the relative sealing of the valve core 4 with the partition 3, and controlling the opening and closing of the corresponding flow passage.

In the embodiment of the utility model, two sides of the end part of the partition part 3 are arranged in a step shape, so that the friction between the valve core 4 and the partition part 3 is reduced, and the smoothness of sliding is improved.

In the present embodiment, the cross section of the circulation channel 55 is a circular hole or a flat strip. By setting the circulation passage 55 to be a circular hole shape, control accuracy can be improved by reducing the cross-sectional area of the circulation passage 55 for a mechanical device having a small pressure strength; for mechanical equipment with higher pressure intensity requirement, the influence of the pressure intensity on the pressure of a hydraulic device and the mechanical equipment can be reduced by increasing the cross section area, namely, a better buffering effect, namely the proportional control of the flow speed and the fluid area can be achieved.

In the embodiment of the present invention, the circulation passage 55 includes a transverse portion 21 and connecting portions 22 extending from both ends of the transverse portion 21 in an arc shape, the connecting portions 22 are respectively connected to the oil inlet hole 51 and the oil outlet hole 52, wherein the circulation passage 55 is formed when the mold blank is formed.

In the embodiment of the present invention, a buffer chamber 65 is disposed between the second chamber 62 and the third chamber 63. The pressure difference generated when the first state and the second state are switched is reduced while the fluid precision is ensured, and the buffer function is achieved.

In the embodiment of the present invention, threaded holes are formed at two ends of the sliding channel 2 for installing electromagnetic devices.

In the embodiment of the utility model, the oil inlet hole 51, the oil outlet hole 52, the first adjusting hole 53 and the second adjusting hole 54 are all vertically arranged.

In the embodiment of the present invention, the valve body 4 is provided with a sealing portion which is engaged with the partition portion 3, thereby achieving communication between the first state and the second state.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The five-cavity structure of the hydraulic electromagnetic valve is characterized by comprising a valve body, a sliding channel arranged on the valve body and a valve core capable of moving along the length direction of the sliding channel, wherein the sliding channel is provided with an oil inlet hole, an oil outlet hole, a first adjusting hole and a second adjusting hole, when the valve core is in a first state, the oil inlet hole is communicated with the oil outlet hole, when the valve core is in a second state, the first adjusting hole is communicated with the second adjusting hole, the valve body is further provided with a circulating channel communicated with the oil inlet hole and the oil outlet hole, and when the valve core is switched from the first state to the second state, fluid in the oil outlet hole can flow back to the oil inlet hole from the circulating channel.

2. A five chamber structure of a hydraulic solenoid valve as claimed in claim 1, wherein: the sliding channel is provided with an inward convex partition part, and the partition part forms a first cavity, a second cavity, a third cavity and a fourth cavity and is respectively connected with the oil outlet, the second adjusting hole, the first adjusting hole and the oil inlet.

3. A five chamber structure of a hydraulic solenoid valve as claimed in claim 2, wherein: both sides of the end part of the partition part are arranged in a ladder shape.

4. A five chamber structure of a hydraulic solenoid valve as claimed in claim 1, wherein: the cross section of the circulating channel is in a round hole shape or a flat strip shape.

5. A five chamber structure of a hydraulic solenoid valve as claimed in claim 1, wherein: circulation channel includes horizontal portion and the connecting portion that extend from the both ends arc of horizontal portion, connecting portion are connected with inlet port, oil outlet respectively.

6. A five chamber structure of a hydraulic solenoid valve as claimed in claim 2, wherein: and a buffer cavity is arranged between the second cavity and the third cavity.

7. A five chamber structure of a hydraulic solenoid valve as claimed in claim 1, wherein: threaded holes are formed in two ends of the sliding channel.

8. A five chamber structure of a hydraulic solenoid valve as claimed in claim 1, wherein: the oil inlet hole, the oil outlet hole, the first adjusting hole and the second adjusting hole are all vertically arranged.

9. A five chamber structure of a hydraulic solenoid valve as claimed in claim 2, wherein: the valve core is provided with a sealing part matched with the partition part.