CN109373038B

CN109373038B - Electromagnetic directional valve

Info

Publication number: CN109373038B
Application number: CN201811504504.1A
Authority: CN
Inventors: 陈志勇; 翁之旦; 张策; 虞拯
Original assignee: Ningbo Hoyea Machinery Manufacture Co Ltd
Current assignee: Ningbo Hoyea Machinery Manufacture Co Ltd
Priority date: 2018-12-10
Filing date: 2018-12-10
Publication date: 2020-04-07
Anticipated expiration: 2038-12-10
Also published as: CN109373038A

Abstract

The invention provides an electromagnetic directional valve which comprises a valve body, a valve core and an electromagnet assembly and is characterized in that a valve body main channel is arranged inside the valve body, a first working oil hole and a second working oil hole are formed in the upper side surface of the valve body, an oil return channel and an oil inlet channel are respectively arranged on the two side surfaces of the valve body, the oil return channel is communicated with the valve body main channel, a plurality of bolt holes are further formed in the valve body, and the bolt holes penetrate through the two sides of the valve body. By adjusting the positions and the number of the bolt holes in the valve body, the risk of leakage of the valve body is reduced, the applicability and the reliability of the valve body in different occasions are improved, and pore channel deformation is prevented.

Description

Electromagnetic directional valve

Technical Field

The invention relates to the field of hydraulic control valves, in particular to an electromagnetic directional valve.

Background

There is inclosed chamber in the solenoid valve, it has the through-hole to open in different positions, different oil pipe of every jogged joint, be the case in the middle of the chamber, the both ends of solenoid valve then are two electro-magnets, the magnet coil circular telegram of which end, the case will be pushed to the another side, the removal through the control case opens or closes different oil outlets, and the inlet port is normally open, hydraulic oil will get into different oil pipe, then the piston that promotes the hydro-cylinder through the pressure of oil, the piston drives the piston rod again, thereby the piston rod further drives mechanical device.

The existing electromagnetic directional valve is small in size generally, bolt holes are required to be formed in an electromagnetic valve body to fix the electromagnetic valve, more than four bolt holes are formed in a common traditional electromagnetic valve body, deformation of a hole channel in the valve body is easily influenced by the fixing mode, and especially under the condition that a plurality of electromagnetic valves are clamped, the bolt holes are too close to a valve core hole channel in the valve body, so that the hole channel is easily deformed, and the electromagnetic directional valve cannot adapt to severe use places.

The patent with publication number CN108443561A discloses an electromagnetic directional valve body and an electromagnetic directional valve thereof, wherein the valve body is provided with a valve body oil filtering outlet, a valve body oil filtering inlet, an oil filtering output flow passage and an oil filtering input flow passage, the valve body is fixedly connected with a filter, the valve body oil filtering inlet is communicated with a second oil duct through the oil filtering input flow passage, the valve body oil filtering outlet is communicated with an oil inlet through the oil filtering output flow passage, the filter element is fixedly connected to a shell base, the shell base is provided with a filter oil inlet and a filter oil outlet, the filter oil inlet is opposite to the valve body oil filtering outlet, the lower part of a central hole of the filter element is communicated with the filter oil inlet, and a bypass valve is arranged between the upper part of the central. The problem that the hole channel is deformed due to the fact that a plurality of bolts are adopted for fixing is still not solved, and the electromagnetic valve cannot adapt to severe use places.

Disclosure of Invention

The invention aims to provide an electromagnetic directional valve, which is used for solving the problem that the deformation of a hole passage in a valve body is easily caused by bolt fixing of the existing electromagnetic directional valve.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides an electromagnetic directional valve, includes valve body, case and electromagnet assembly the inside valve body main passage that is provided with of valve body, be provided with first work oilhole and second work oilhole on the side on the valve body, be provided with oil return channel and oil feed passageway on the valve body both sides face respectively, oil return channel with valve body main passage intercommunication, still be provided with a plurality of bolt holes on the valve body, the bolt hole runs through the both sides of valve body.

Further, the bolt holes include a first bolt hole and a second bolt hole, and the first bolt hole and the second bolt hole penetrate through the lower end of the side face of the valve body and are far away from the main valve body channel.

Further, the bolt hole set up in oil return channel's below, and be close to the oil feed passageway.

Furthermore, a return spring is arranged on the valve core, position points are arranged in the main channel of the valve body, the position points comprise a first position point, a second position point and a third position point, and the valve core moves among the position points through the return spring and the electromagnet assembly.

Further, the oil return passage and the oil inlet passage are obliquely arranged in the valve body.

Furthermore, electromagnet assemblies are arranged at two ends of the valve body, and each electromagnet assembly is respectively connected with a power supply to control the movement of the piston.

Furthermore, the oil return hole of the oil return channel is arranged on the side face of the valve body, the oil inlet hole of the oil inlet channel is arranged on the side face of the valve body, and the oil return hole and the oil inlet hole are provided with sealing rings.

Further, the oil return passage includes first oil return passage and second oil return passage, is located respectively the both sides of oil feed passageway.

Further, the oil inlet channel is communicated with the valve body main channel through a second position point, the first oil return channel is communicated with the valve body main channel through a first position point, and the second oil return channel is communicated with the valve body main channel through a third position point.

Furthermore, a third working channel and a fourth working channel are arranged in the first working oil hole and the second working oil hole, and the third working channel and the fourth working channel are communicated with the valve body main channel and are respectively positioned on two sides of the valve body main channel.

By adopting the invention, the influence of the deformation on the valve core pore passage can be effectively prevented by reducing the number of the bolt holes of the electromagnetic valve and adjusting the positions of the bolt holes, and the problem that the valve core pore passage is easy to deform when the electromagnetic valve is clamped by a plurality of pieces and under a severe environment is solved.

Drawings

Fig. 1 is a schematic diagram of an overall structure of a solenoid directional valve according to an embodiment of the present invention;

FIG. 2 is a top view of a solenoid directional valve according to an embodiment of the present invention;

FIG. 3 is a front view of a solenoid directional valve according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a solenoid directional valve along a bore of a valve spool according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a solenoid directional valve taken along a central axis of a working oil bore in accordance with an embodiment of the present invention;

the electromagnetic valve comprises a valve body, a valve core 1, a valve core 11, a return spring 111, a valve body main passage 12, a first working oil hole 13, a third working passage 131, a second working oil hole 14, a first oil return passage 151, a second oil return passage 152, an oil inlet passage 16, a first bolt hole 171, a second bolt hole 172, a first position point 181, a second position point 182, a third position point 183, a sealing ring 19, an electromagnet assembly and a electromagnet assembly 2.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

Referring to fig. 1, this embodiment provides an electromagnetic directional valve, including valve body 1, case 11, and electromagnet assembly 2, the inside valve body main passage 12 that is provided with of valve body 1, be provided with first work oilhole 13 and second work oilhole 14 on the side on the valve body 1, be provided with oil return channel and oil feed channel 16 on the valve body 1 both sides face respectively, oil return channel and valve body main passage 12 intercommunication still are provided with a plurality of bolt holes on the valve body 1, and the bolt hole runs through the both sides of valve body 1.

The electromagnetic directional valve in the embodiment is a three-position five-way electromagnetic directional valve which is of a sheet type installation structure, is convenient for clamping multiple sheets, has strong expansibility and small volume of the valve body, and is suitable for being installed and used in places with small space.

In this embodiment, the first working oil hole 13 and the second working oil hole 14 are connected to an oil cylinder, etc. to deliver hydraulic oil to the oil cylinder, so as to drive a piston of the oil cylinder to move, thereby driving a machine to move.

The valve body main channel 12 is positioned inside the valve body 1, the valve core 11 is arranged in the valve body main channel 12, the electromagnet assemblies 2 at the two ends of the valve body 1 drive the valve core 11 to move in the valve body main channel 12, when the valve core 11 moves to different position points, the pore channel on the corresponding position point is blocked, and hydraulic oil cannot flow in the pore channel.

The electromagnets 2 at the two ends need to be connected with a power supply, when the electromagnet at one end is connected with the power supply and the electromagnet at the other end is not electrified, the valve core 11 receives the thrust of the electromagnet at the electrified end so as to move, and when the electromagnet assemblies at the two ends are not electrified, the valve core 11 is positioned at the middle position point of the main channel 12 of the valve body.

The two bolt holes on the valve body 1 comprise a first bolt hole 171 and a second bolt hole 172, when the electromagnetic valve needs to be fixed, the electromagnetic valve can be fixed through the bolt holes through the bolts, meanwhile, the valve body is of a sheet type structure, multiple sheets of the electromagnetic valve can be clamped together, the bolts directly fix multiple sheets of the electromagnetic valve through the bolt holes, the valve body 1 is designed into the sheet type structure, and subsequent function expansion is very convenient, for example, multiple sheets of the electromagnetic valve are clamped.

The oil return passages include a first oil return passage 151, a second oil return passage 152, and the oil inlet passage is only the oil inlet passage 16.

The oil inlet passage 16 is communicated with the main valve body passage 12, and the first oil return passage 151 and the second oil return passage 152 are also communicated with the main valve body passage 12, it being understood that, as can be seen from fig. 1 and 3, the oil inlet passage 16, the first oil return passage 151 and the second oil return passage 152 all penetrate through the valve body 1, and corresponding through holes are formed on both sides.

In this embodiment, the bolt holes include a first bolt hole 171 and a second bolt hole 172, and the first bolt hole 171 and the second bolt hole 172 penetrate through the lower end of the side surface of the valve body 1 and are away from the valve body main passage 12.

Because the volume of valve body is less, the position of bolt hole need keep away from valve body main channel 12, just can reduce the deformation influence that produces main channel 12, and in this embodiment, the position interval of bolt hole and valve body main channel 12 is more than 2CM at least.

In this embodiment, the bolt hole sets up in oil return channel's below, and is close to oil feed channel 16.

Through reducing the bolt hole and the distance between oil return passageway and the oil feed passageway 16, can guarantee that the valve body structure can not produce hydraulic oil and reveal outward.

In this embodiment, the valve core 11 is provided with a return spring 111, the valve body main passage 12 is provided with position points including a first position point 181, a second position point 182, and a third position point 183, and the valve core 11 moves between the position points through the return spring 111 and the electromagnet assembly 2.

The oil inlet passage 16 communicates with the valve body main passage 12 through the second position point 182, the first oil return passage 151 communicates with the valve body main passage 12 through the first position point 181, and the second oil return passage 152 communicates with the valve body main passage 12 through the third position point 183.

The three position points are respectively the connection position of each channel, the valve core 11 moves on each position point, when the electromagnet at one end of the valve body is electrified, the valve core 11 moves in the opposite direction to reach the corresponding position point, so that the channel at the position point is blocked, and when the electromagnet is powered off, the valve core 11 is reset by the reset spring.

In this embodiment, the oil return passage and the oil inlet passage 16 are obliquely disposed in the valve body 1.

Through the slope design, also make things convenient for the circulation of hydraulic oil on the one hand, on the other hand, the influence that reduction passageway that can be abundant produced the valve body main channel prevents to lead to the valve body main channel to take place deformation under harsh use place.

In this embodiment, two ends of the valve body 1 are provided with the electromagnet assemblies 2, and each electromagnet assembly is respectively connected to a power supply to control the movement of the valve core.

In this embodiment, the oil return hole of the oil return channel is disposed on the side surface of the valve body 1, the oil inlet hole of the oil inlet channel 16 is disposed on the side surface of the valve body, and the oil return hole and the oil inlet hole are provided with the sealing rings 19.

The packing 19 is used to prevent leakage of hydraulic oil.

In this embodiment, the oil return passage includes a first oil return passage 151 and a second oil return passage 152, which are respectively located at two sides of the oil inlet passage 16.

Referring to fig. 1 or fig. 3, the oil inlet passage 16 is located in the middle position to facilitate oil inlet, and the oil return passages on the two sides facilitate recovery of hydraulic oil.

In this embodiment, the first working oil hole 13 and the second working oil hole 14 are respectively provided with a third working channel 131 and a fourth working channel, and the third working channel 131 and the fourth working channel are communicated with the valve body main channel 12 and are respectively located at two sides of the valve body main channel 12.

Referring to fig. 4, fig. 4 is a central sectional view of the first working oil hole 13, and fig. 4 shows only the first working oil hole 13 and the third working passage 131 on one side of the valve body main passage 12, while the second working oil hole 14 and the fourth working passage on the other side of the valve body main passage 12 are not shown.

Through third working channel 131, can make things convenient for the entering of hydraulic oil, even pressure in the twinkling of an eye is too big, also can cushion through first work oilhole 13 to reduce the impact force of hydraulic oil to a certain extent, guarantee the stability of whole hydraulic system during operation.

Through the bolt hole quantity that reduces the solenoid valve and the position of adjustment bolt hole, can effectually prevent that the case pore from receiving the influence of deformation, overcome the solenoid valve and press from both sides the dress and the problem that the case pore produced deformation easily under the harsh environment at the multichip, the solenoid directional valve of piece formula also can make things convenient for the function extension simultaneously, for example install the balanced valve additional or the multichip installs additional etc..

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. An electromagnetic directional valve comprises a valve body, a valve core and an electromagnet assembly, and is characterized in that a valve body main channel is arranged inside the valve body, a first working oil hole and a second working oil hole are formed in the upper side face of the valve body, an oil return channel and an oil inlet channel are respectively arranged on the two side faces of the valve body, the oil return channel is communicated with the valve body main channel, a plurality of bolt holes are further formed in the valve body, and the bolt holes penetrate through the two sides of the valve body; the bolt holes comprise a first bolt hole and a second bolt hole, and the first bolt hole and the second bolt hole penetrate through the lower end of the side face of the valve body and are far away from the main valve body channel; the bolt hole set up in oil return channel's below, and be close to the oil feed passageway.

2. The electromagnetic directional valve as set forth in claim 1, wherein a return spring is disposed on said spool, and wherein position points are disposed in said main passage of said valve body, said position points including a first position point, a second position point, and a third position point, said spool being moved between said position points by said return spring and said electromagnet assembly.

3. The electromagnetic directional valve as set forth in claim 1, wherein said oil return passage and said oil inlet passage are obliquely disposed within said valve body.

4. The electromagnetic directional valve according to claim 1, wherein the valve body is provided with electromagnet assemblies at both ends, and each electromagnet assembly is respectively connected with a power supply to control the movement of the valve core.

5. The electromagnetic directional valve according to claim 1, wherein the oil return hole of the oil return passage is disposed on the side surface of the valve body, the oil inlet hole of the oil inlet passage is disposed on the side surface of the valve body, and the oil return hole and the oil inlet hole are provided with sealing rings.

6. The electromagnetic directional valve of claim 2, wherein the oil return passage includes a first oil return passage and a second oil return passage respectively located on both sides of the oil inlet passage.

7. The electromagnetic directional valve according to claim 6, wherein said oil inlet passage is in communication with said valve body main passage through a second point, said first oil return passage is in communication with said valve body main passage through a first point, and said second oil return passage is in communication with said valve body main passage through a third point.

8. The electromagnetic directional valve according to claim 1, wherein a third working passage and a fourth working passage are provided in the first working oil hole and the second working oil hole, respectively, and the third working passage and the fourth working passage communicate with the valve body main passage and are located on both sides of the valve body main passage, respectively.