CN212985654U

CN212985654U - Pressure equalizing electromagnetic reversing valve assembly

Info

Publication number: CN212985654U
Application number: CN202021258199.5U
Authority: CN
Inventors: 姚晓峰; 左超杰
Original assignee: Suzhou Yuanshang Precision Machinery Co ltd
Current assignee: Suzhou Yuanshang Precision Machinery Co ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-04-16
Anticipated expiration: 2030-06-30

Abstract

The utility model discloses a pressure-equalizing electromagnetic reversing valve assembly, including valve pocket and case, the case is acceptd in the valve pocket and can be followed the valve pocket and removed, the valve pocket is equipped with oil inlet, first oil-out and second oil-out, the case is equipped with mesopore and crosses the oilhole, the oil inlet passes through mesopore and crosses the oilhole and communicates, the case removes in the valve pocket, when the case is in the first position, the oil inlet communicates with first oil-out, the second oil-out is sealed by the outer wall of case, when the case is in the second position, first oil-out is sealed with the outer wall of case, the oil inlet communicates with the second oil-out through mesopore; the valve core is provided with a plurality of pressure equalizing grooves, each pressure equalizing groove is annular, the cross section of each pressure equalizing groove is V-shaped, the V-shaped pressure equalizing grooves can greatly reduce the influence caused by radial unbalanced force, prevent the valve core from being blocked, reduce the difficulty in manufacturing and reduce the processing cost.

Description

Pressure equalizing electromagnetic reversing valve assembly

Technical Field

The utility model relates to a switching-over valve especially relates to a voltage-sharing solenoid directional valve subassembly.

Background

The reversing valve is a directional control valve with more than two flow forms and more than two oil ports. The valve realizes the communication, cut-off and reversal of hydraulic oil flow, pressure unloading and sequential action control. The valve is controlled by the relative movement direction of the valve core and the valve body. There are two types, a rotary valve type and a slide valve type. The valve core is divided into two positions, three positions and the like according to the number of the working positions of the valve core staying in the valve body; the oil way connected with the valve body is divided into a two-way, a three-way, a four-way, a six-way and the like; the movement modes of the operation valve core are manual, motor, electric, hydraulic, electrohydraulic and the like.

The slide valve type electromagnetic directional valve is generally provided with an electromagnetic element at each of two ends, and the valve core is pushed by means of the loss of power of the elements at the two ends, so that different chambers are the same or disconnected.

However, the performance and service life of the existing slide valve type are not ideal, and the slide valve type is mainly in a dead state when the valve core moves. The hydraulic clamping is generally caused by the reasons that dirt enters a gap to make a valve core difficult to move, and the valve core is blocked due to the fact that the gap is too small and the valve core expands when the oil temperature rises. The main reason is that both ends are controlled by electromagnetic elements, the oil inlet and outlet holes are designed on the side surface, the valve core can have radial hydraulic pressure change no matter the switch is reversed, and if the geometric shape and the concentricity of the slide valve pair are larger, the caused radial unbalanced hydraulic pressure can lead the valve core to be blocked and not to move. If the manufacturing accuracy of the spool and valve bore is tightly controlled in order to reduce radial imbalance forces, the difficulty of manufacturing is greatly increased.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a pressure-equalizing electromagnetic directional valve component which can reduce radial unbalanced force and prevent the valve core from being blocked.

The purpose of the utility model is realized by adopting the following technical scheme:

a pressure-equalizing electromagnetic reversing valve component comprises a valve sleeve and a valve core, wherein the valve core is accommodated in the valve sleeve and can move along the valve sleeve, the valve sleeve is provided with an oil inlet, a first oil outlet and a second oil outlet, the valve core is provided with a middle hole and an oil passing hole, the oil inlet is communicated with the oil passing hole through the middle hole, the valve core moves in the valve sleeve, when the valve core is at a first position, the oil inlet is communicated with first oil outlet, the second oil outlet is sealed by the outer wall of the valve core, when the valve core is at a second position, the first oil outlet is sealed with the outer wall of the valve core, and the oil inlet is communicated with the second oil outlet through the middle hole and the oil passing hole; the valve core is provided with a plurality of pressure equalizing grooves, and each pressure equalizing groove is annular and has a V-shaped section.

Furthermore, the number of the first oil outlets is a plurality, the first oil outlets are uniformly distributed in the valve sleeve at intervals, and connecting lines of the first oil outlets are circular.

Furthermore, the number of the second oil outlets is a plurality, the second oil outlets are uniformly distributed in the valve sleeve at intervals, and connecting lines of the second oil outlets are circular.

Further, the extension direction of the middle hole is perpendicular to the extension direction of the oil passing hole.

Further, the central bore is located at a center of the valve core.

Furthermore, the valve core is also provided with a groove, and the oil passing hole is positioned in the groove.

Further, the valve sleeve comprises an inner wall, and the valve core comprises an outer wall which is in sealing fit with the inner wall.

Compared with the prior art, the valve core of the pressure-equalizing electromagnetic reversing valve component is provided with the middle hole and the oil passing hole, the oil inlet is communicated with the oil passing hole through the middle hole, the valve core moves in the valve sleeve, when the valve core is at the first position, the oil inlet is communicated with the first oil outlet, the second oil outlet is sealed by the outer wall of the valve core, when the valve core is at the second position, the first oil outlet is sealed with the outer wall of the valve core, and the oil inlet is communicated with the second oil outlet through the middle hole and the oil passing hole; the valve core is provided with a plurality of pressure equalizing grooves, each pressure equalizing groove is annular, the cross section of each pressure equalizing groove is V-shaped, the V-shaped pressure equalizing grooves can greatly reduce the influence caused by radial unbalanced force, prevent the valve core from being blocked, reduce the difficulty in manufacturing and reduce the processing cost.

Drawings

FIG. 1 is a perspective view of the pressure-equalizing electromagnetic directional valve assembly of the present invention;

FIG. 2 is a perspective cross-sectional view of a valve sleeve of the pressure equalizing solenoid reversing valve assembly of FIG. 1;

FIG. 3 is a perspective view of a valve spool of the pressure equalizing solenoid operated directional valve assembly of FIG. 1;

FIG. 4 is a cross-sectional view of the pressure equalizing solenoid reversing valve assembly of FIG. 1;

FIG. 5 is another cross-sectional view of the pressure equalizing electromagnetic reversing valve assembly of FIG. 1.

In the figure: 10. a valve housing; 11. an oil inlet; 12. a first oil outlet; 13. a second oil outlet; 14. an inner wall; 20. a valve core; 21. a mesopore; 22. an outer wall; 23. a pressure equalizing groove; 24. a groove; 25. and an oil passing hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when a structure is referred to as being "secured to" another structure, it can be directly on the other structure or intervening structures may also be present, secured by the intervening structures. When a structure is referred to as being "connected" to another structure, it can be directly connected to the other structure or intervening structures may also be present. When a structure is referred to as being "disposed on" another structure, it can be directly on the other structure or intervening structures may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, in order to illustrate an embodiment of a voltage-sharing electromagnetic directional valve assembly according to the present invention, the voltage-sharing electromagnetic directional valve assembly includes a valve housing 10 and a valve core 20.

The valve housing 10 is provided with an oil inlet 11, a first oil outlet 12 and a second oil outlet 13. An oil inlet 11 is located at the end of the valve housing 10. The oil inlet 11 extends in the same direction as the valve housing 10. The first outlet port 12 and the second outlet port 13 are located at the side of the valve housing 10, respectively. The valve sleeve 10 is of a hollow structure, and the oil inlet 11, the first oil outlet 12 and the second oil outlet 13 are all communicated with the interior of the valve sleeve 10. The number of the first oil outlets 12 is several, and the several first oil outlets 12 are evenly distributed at the side of the valve housing 10. The connecting line of the first oil outlets 12 is circular. The number of the second oil outlets 13 is several, and the several second oil outlets 13 are uniformly distributed at the side of the valve housing 10. The connecting lines of the plurality of second oil outlets 13 are circular. The housing 10 also includes an inner wall 14.

The valve core 20 is provided with a center hole 21, a pressure equalizing groove 23, a groove 24, and an oil passing hole 25. The central hole 21 is located at the center of the valve core 20 and is a blind hole. The valve core 20 comprises an outer wall 22, and a plurality of pressure equalizing grooves 23 are uniformly distributed on the outer wall 22 at intervals. Each of the pressure equalizing grooves 23 has a ring shape. Each of the pressure equalizing grooves 23 has a V-shaped cross section. A groove 24 is also located on the outer wall 22. The oil passing hole 25 is located in the groove 24 and communicates with the middle hole 21. The extending direction of the oil passing hole 25 is perpendicular to the extending direction of the middle hole 21.

When the pressure equalizing electromagnetic directional valve assembly is assembled, the valve core 20 is accommodated in the valve housing 10, and the outer wall 22 of the valve core 20 is sealed with the inner wall 14 of the valve housing 10. A spring is installed between the valve core 20 and the valve housing 10. Under the condition that the electromagnetic element is not electrified, the valve core 20 is pushed to a push rod of the electromagnetic element under the action of spring force, the position of the valve core 20 is shown in fig. 4, the oil inlet 11 is communicated with the first oil outlet 12, the second oil outlet 13 is sealed by the outer wall 22, and the oil liquid flow path flows from the oil inlet 11 to the first oil outlet 12. When the electromagnetic element is energized, the push rod pushes the valve core 20 to move, and the position of the valve core 20 is shown in fig. 5. The first oil outlet 12 is sealed by the outer wall 22, the oil inlet 11 is disconnected from the first oil outlet 12, the oil passing hole 25 is communicated with the second oil outlet 13, and the oil inlet 11 is communicated with the second oil outlet 13 through the middle hole 21 and the oil passing hole 25. The oil liquid flow path is from the oil inlet 11 to the second oil outlet 13 through the middle hole 21 and the oil passing hole 25. After the electromagnetic element loses power, the push rod is reversed, and the valve core 20 rebounds to the initial position under the action of the spring to realize the transposition function. In the above process, although the valve core 20 has other through holes, the chambers connected by the through holes have sealing components, and the oil flow path is not influenced.

In this application, because the oil inlet 11 is located the valve barrel 10 tip, the extending direction of oil inlet 11 is the same with the moving direction of case 20, and radial hydraulic pressure changes for a short time during the use, reduces radial unbalanced hydraulic pressure power, prevents that case 20 from blocking. The V-shaped pressure equalizing groove 23 can greatly reduce the influence caused by radial unbalanced force, and also reduces the difficulty in manufacturing and the processing cost.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, all according to the equivalent modifications and evolutions of the present invention, which are made to the above embodiments by the essential technology, and all belong to the protection scope of the present invention.

Claims

1. The utility model provides a voltage-sharing solenoid directional valve subassembly, includes valve barrel and case, the case is acceptd in the valve barrel and can be followed the valve barrel removes, its characterized in that: the valve sleeve is provided with an oil inlet, a first oil outlet and a second oil outlet, the valve core is provided with a middle hole and an oil passing hole, the oil inlet is communicated with the oil passing hole through the middle hole, the valve core moves in the valve sleeve, when the valve core is at a first position, the oil inlet is communicated with the first oil outlet, the second oil outlet is sealed by the outer wall of the valve core, when the valve core is at a second position, the first oil outlet is sealed with the outer wall of the valve core, and the oil inlet is communicated with the second oil outlet through the middle hole and the oil passing hole; the valve core is provided with a plurality of pressure equalizing grooves, and each pressure equalizing groove is annular and has a V-shaped section.

2. The pressure equalizing solenoid reversing valve assembly of claim 1, wherein: the number of the first oil outlets is a plurality, the first oil outlets are evenly distributed in the valve sleeve at intervals, and connecting lines of the first oil outlets are circular.

3. The pressure equalizing solenoid reversing valve assembly of claim 1, wherein: the number of the second oil outlets is a plurality, the second oil outlets are evenly distributed in the valve sleeve at intervals, and connecting lines of the second oil outlets are circular.

4. The pressure equalizing solenoid reversing valve assembly of claim 1, wherein: the extending direction of the middle hole is perpendicular to the extending direction of the oil passing hole.

5. The pressure equalizing solenoid reversing valve assembly of claim 4, wherein: the central bore is located at the center of the valve core.

6. The pressure equalizing solenoid reversing valve assembly of claim 1, wherein: the valve core is further provided with a groove, and the oil passing hole is located in the groove.

7. The pressure equalizing solenoid reversing valve assembly of claim 1, wherein: the valve sleeve comprises an inner wall, the valve core comprises an outer wall, and the outer wall is in sealing fit with the inner wall.