CN212899207U

CN212899207U - Double-check plug-in type electromagnetic valve

Info

Publication number: CN212899207U
Application number: CN202021861730.8U
Authority: CN
Inventors: 熊绪勇; 张建彬
Original assignee: Shanghai Seven Ocean Hydraulic Industrial Co ltd
Current assignee: Shanghai Seven Ocean Hydraulic Industrial Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-04-06
Anticipated expiration: 2030-08-31

Abstract

The invention discloses a double-check plug-in type electromagnetic valve, which comprises: the device comprises a valve seat, a sliding shaft, a spring, an electromagnetic guide sleeve, a push rod, a fixed seat, a coil, an armature and a sizing block; the sliding shaft is arranged in the valve seat, wherein the inclined surface of the sliding shaft and the circular truncated cone right angle of the valve seat form a sealing surface; the electromagnetic guide sleeve is arranged on the lower part of the coil and the upper part of the fixed seat and is connected with one end of the sizing block; the armature is arranged at the lower part of the sizing block and connected with the fixed seat; the push rod is arranged at the lower part of the fixed seat and is connected with the spring; wherein, still include: a first oil port and a second oil port; the first oil port and the second oil port are arranged on the valve seat. The valve block is simple and compact in structure, adopts a 08-2 jack and is provided with a universal drilling cutter, so that the valve block is easy to process and convenient to install. The coil power supply adopts AC220V, AC110V and DC24V universal power supplies, the action response is sensitive, and the pressure-maintaining and non-return effects are obvious after the coil power supply is electrified.

Description

Double-check plug-in type electromagnetic valve

Technical Field

The invention relates to the technical field of hydraulic machinery, in particular to a double-non-return plug-in type electromagnetic valve.

Background

Nowadays, with the great development of economy and science and technology, the variety of valves is continuously increased, and industries applying the valves are more and more, such as agricultural machinery industry, ship industry, aerospace industry, aviation industry and the like are widely used. More and more industrial applications have more and more new requirements on the valve, and the requirements on the quality and the technical quality of the valve are higher and higher.

In the European and American industrial countries, the integrated block applying the cartridge valve is the first choice. Control loops for high flow systems are also widely used with threaded cartridge valves. In the hydraulic valve industry, mass-produced components often use special valves or special valve blocks, in which many screw-in cartridge valves are also used. In the walking hydraulic pressure, because of the tradition reason, the switching-over valve still fairly commonly adopts the piece formula structure, and other hydraulic control then adopt the integrated piece of screw thread cartridge valve. Plate-type flow valves and pressure valves are being replaced by stacked threaded cartridge valves. Therefore, the position of the threaded cartridge valve in the hydraulic valve is higher and higher, and the application is wider and wider.

At present, the variety of the threaded cartridge valves is various, almost all hydraulic valve functions are covered, but only a few large companies can provide complete type spectrums. In recent years, the development of the threaded cartridge valve is rapid, and many hydraulic companies in China take the opportunity to produce and manufacture the threaded cartridge valve, and develop new products. The double-check plug-in type electromagnetic valve developed by our company is one of various types of threaded plug-in valves, has a simple and compact structure, adopts a 08-2 jack and is provided with a universal drilling tool, so that the valve block is easy to process and convenient to install. The electromagnetic coil power supply adopts AC220V, AC110V and DC24V universal power supplies, the action response is sensitive, and the pressure-maintaining and non-return effects are obvious after the electrification.

Disclosure of Invention

The invention aims to provide a double non-return plug-in type electromagnetic valve which can achieve the purposes of bidirectional non-return and circulation.

In order to achieve the above object, the present invention provides a double non-return cartridge-type solenoid valve, comprising: the device comprises a valve seat, a sliding shaft, a spring, an electromagnetic guide sleeve, a push rod, a fixed seat, a coil, an armature, a sizing block and a nut;

the sliding shaft is arranged in the valve seat, wherein the inclined surface of the sliding shaft and the circular truncated cone right angle of the valve seat form a sealing surface;

the coil is fixed on the electromagnetic guide sleeve through the sizing block and the nut threads;

the fixed seat and the armature are placed inside the electromagnetic guide sleeve, and the convex surface of the armature is opposite to the corresponding concave surface of the fixed seat;

the push rod is arranged at the lower part of the fixed seat and is connected with the spring;

wherein, still include: a first oil port and a second oil port;

the first oil port and the second oil port are arranged on the valve seat;

the sliding shaft is arranged in the valve seat, the inclined plane of the sliding shaft and the circular truncated cone right angle of the valve seat form a sealing surface, and a sealing ring between the inside of the valve seat and the sliding shaft prevents hydraulic oil from leaking inwards.

In one implementation, when the coil is powered off, the thrust of the spring moves the sliding shaft in a first direction, so that the sliding shaft is separated from the sealing surface of the valve seat, the passages of the first oil port and the second oil port are communicated, hydraulic oil flows between the first oil port and the second oil port, and the coil is in two-way communication when the coil is powered off.

In one implementation manner, when the coil generates a magnetic field, the armature is attracted to the fixed seat, the armature moves in a second direction, the first direction and the second direction are opposite directions, the push rod is pushed to move in the second direction, and the push rod drives the spring to push the sliding shaft in the second direction until the sliding shaft is attached to the valve seat sealing surface.

Preferably, a passage for connecting the first oil port and the second oil port is provided on the slide shaft.

Preferably, the double non-return plug-in type electromagnetic valve structure adopts a 08-2 jack.

Preferably, the coil power supply adopts AC220V, AC110V and DC24V universal power supply.

The double-check plug-in type electromagnetic valve provided by the embodiment of the invention has a simple and compact structure, adopts a 08-2 jack and is provided with a universal drilling tool, so that the valve block is easy to process and convenient to install. The sliding shaft is provided with a channel connecting the first oil port and the second oil port, a sealing surface is arranged between the sliding shaft and the valve seat, and the spring force and the electromagnetic force of the coil can control the opening and closing of the sealing surface, so that the purposes of bidirectional non-return and circulation are achieved.

Drawings

Fig. 1 is a schematic structural diagram of a double non-return cartridge solenoid valve according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Please refer to fig. 1. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

As shown in fig. 1, the present invention provides a double non-return cartridge-type solenoid valve, comprising: the device comprises a valve seat 1, a sliding shaft 2, a spring 3, an electromagnetic guide sleeve 4, a push rod 5, a fixed seat 6, a coil 7, an armature 8 and a sizing block 9;

the sliding shaft 2 is arranged in the valve seat 1, wherein the inclined surface of the sliding shaft 2 and the circular truncated cone right angle of the valve seat 1 form a sealing surface; the electromagnetic guide sleeve 4 is arranged on the lower part of the coil 7 and the upper part of the fixed seat 6, and the electromagnetic guide sleeve 4 is connected with one end of the sizing block 9; the armature 8 is arranged at the lower part of the sizing block 9, and the armature 8 is connected with the fixed seat 6; the push rod 5 is arranged at the lower part of the fixed seat 6, and the push rod 5 is connected with the spring 3;

wherein, still include: a first oil port 11 and a second oil port 12; the first oil port 11 and the second oil port 12 are disposed on the valve seat 1. And a passage for connecting the first oil port 11 and the second oil port 12 is arranged on the slide shaft 2.

It should be noted that, the slide shaft 2 is installed in the valve seat 1, the inclined plane of the slide shaft 2 and the circular truncated cone right angle of the valve seat 1 form a sealing surface, and the sealing ring between the inside of the valve seat 1 and the slide shaft 2 prevents the hydraulic oil from leaking inwards. Wherein, a passage for connecting the first oil port 11 and the second oil port 12 is arranged on the slide shaft 2. And the fixing nut 10 is positioned on one side of the other end of the sizing block 9 and is used for fixing the sizing block 9. When the coil 7 loses power, the thrust of the spring 3 moves the sliding shaft 2 to the left, so that the sliding shaft 2 is separated from the sealing surface of the valve seat 1, the channels of the first oil port 11 and the second oil port 12 are communicated, hydraulic oil can flow between the first oil port 11 and the second oil port 12, and therefore the coil 7 is communicated in a two-way mode when losing power. When the coil 7 is electrified, the coil 7 generates a magnetic field to magnetize the armature 8 and the fixed seat 6, the armature 8 is attracted to the fixed seat 6, the armature 8 moves to the right, so that the push rod 5 is pushed to move to the right, the push rod 5 overcomes the thrust of the spring 3 to push the sliding shaft 2 to the right until the sliding shaft 2 is attached to the sealing surface of the valve seat 1, and thus, the channels of the first oil port 11 and the second oil port 12 are closed. At this time, since the effective areas of the hydraulic oil acting surfaces in the axial direction are the same, the forces acting in the axial direction of the slide shaft 2 are offset by each other no matter the hydraulic oil pressure of the first oil port 11 or the second oil port 12, so that the electromagnetic force cannot be overcome to open the first oil port 1 and the second oil port 12, and thus the coil 7 is enabled to perform bidirectional non-return when being energized.

In one implementation, the double non-return plug-in type electromagnetic valve structure adopts a 08-2 jack.

It can be understood that the double non-return plug-in type electromagnetic valve structure adopts a 08-2 jack, has simple and compact structure and is provided with a universal drilling tool, thereby being easy to process and convenient to install.

Preferably, the coil 7 power supply adopts AC220V, AC110V and DC24V universal power supplies.

The coil 7 power supply adopts AC220V, AC110V and DC24V universal power supply, the action response is sensitive, and the pressure-maintaining and non-return effect is obvious after the power is switched on.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A double-check cartridge solenoid valve is characterized by comprising: the device comprises a valve seat (1), a sliding shaft (2), a spring (3), an electromagnetic guide sleeve (4), a push rod (5), a fixed seat (6), a coil (7), an armature (8), a sizing block (9) and a nut (10);

the sliding shaft (2) is arranged in the valve seat (1), wherein the inclined surface of the sliding shaft (2) and the circular truncated cone right angle of the valve seat (1) form a sealing surface;

the coil (7) is fixed on the electromagnetic guide sleeve (4) through the sizing block (9) and the nut (10) in a threaded manner;

the fixed seat (6) and the armature (8) are arranged inside the electromagnetic guide sleeve (4), and the convex surface of the armature is opposite to the corresponding concave surface of the fixed seat;

the push rod (5) is arranged at the lower part of the fixed seat (6), and the push rod (5) is connected with the spring (3);

wherein, still include: a first oil port (11) and a second oil port (12);

the first oil port (11) and the second oil port (12) are arranged on the valve seat (1);

the sliding shaft (2) is arranged in the valve seat (1), the inclined plane of the sliding shaft (2) and the circular truncated cone right angle of the valve seat (1) form a sealing surface, and a sealing ring between the inside of the valve seat (1) and the sliding shaft (2) prevents hydraulic oil from leaking inwards.

2. The double check cartridge solenoid valve according to claim 1, wherein when the coil (7) is de-energized, the thrust of the spring (3) moves the slide shaft (2) in a first direction, so that the slide shaft (2) is separated from the sealing surface of the valve seat (1), the passages of the first oil port (11) and the second oil port (12) are communicated, hydraulic oil flows between the first oil port (11) and the second oil port (12), and the coil (7) is in two-way communication when de-energized.

3. The double non-return cartridge type electromagnetic valve according to claim 2, wherein when the coil (7) generates a magnetic field, the armature (8) is attracted to the fixed seat (6), the armature (8) moves in a second direction, the first direction and the second direction are opposite directions, the push rod (5) is pushed to move in the second direction, and the push rod (5) drives the spring (3) to push the sliding shaft (2) in the second direction until the sliding shaft (2) is attached to the sealing surface of the valve seat (1).

4. The double non-return cartridge type solenoid valve according to claim 1, wherein the slide shaft (2) is provided with a passage connecting the first oil port (11) and the second oil port (12).

5. A double non-return cartridge solenoid valve according to claim 1, characterised in that it is constructed using a 08-2 socket.

6. A double non-return cartridge solenoid valve according to claim 1, characterised in that the coil (7) power supply is AC220V, AC110V, DC24V universal power supply.