CN114811155B

CN114811155B - Electromagnetic valve

Info

Publication number: CN114811155B
Application number: CN202111564955.6A
Authority: CN
Inventors: 梁宁; 蔡祖发; 方玉萍; 王超群; 梅承; 黄钦清
Original assignee: Jinhua Hongchang Electrlcal Equipment Co ltd
Current assignee: Jinhua Hongchang Electrlcal Equipment Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2023-12-01
Anticipated expiration: 2041-12-20
Also published as: CN114811155A

Abstract

The invention discloses a solenoid valve, which includes a valve body and a control assembly. A sealing ring frame is provided in the valve body. A middle hole is provided in the center of the sealing ring frame to communicate with the upper and lower spaces of the sealing ring frame. Above the middle hole, there is a The piston has a blocked hole, and the control assembly includes a variable magnetic device arranged on the upper part of the piston that can attract the piston and a bracket that connects the control assembly to the valve body. An external magnetic variable device is used to replace the coil to control the rise and fall of the piston, which does not destroy the sealing of the original solenoid valve and avoids the disadvantages of high cost, high energy consumption, and easy shaking caused by the use of coil control.

Description

Electromagnetic valve

Technical Field

The present invention relates to solenoid valves, and more particularly, to solenoid valves with non-coil control.

Background

The utility model provides a current solenoid valve that washing machine, water heater etc. equipment was used for controlling rivers, the usual upper end is provided with a coil, for example, "an antifouling stifled water solenoid valve that advances that appears in chinese patent document", its publication No. CN207777680U, including the valve body, be provided with the endotheca in the valve body, be provided with spring and iron core in the endotheca, be provided with the rubber core on the iron core tip, be provided with the coil of magnetic force control spring and iron core rising motion on the endotheca outer lane, valve body internally mounted has sealing washer frame subassembly and sealing washer, sealing washer frame subassembly and sealing washer divide into the valve body into backpressure room, intake chamber and apopore, sealing washer sealed intake chamber and apopore, the side hole communicates room and intake chamber, the piston in the magnetic field attraction axle sleeve is resisted upward movement in the spring eye of upper portion after the coil circular telegram, the piston cap is driven by the piston, the sealing of sealing washer medium to the sealing washer hole flows to the delivery port through the sealing washer hole, because sealing washer hole and mesopore have not led to the pressure difference of water inlet and backpressure chamber, the sealing washer is jacked, medium flows directly from the water inlet to delivery port through sealing washer. After the power supply to the coil is stopped, the piston falls back under the action of the spring, the piston cap plugs the hole in the sealing frame again, the medium cannot flow to the water outlet, and the valve is closed.

The existing electromagnetic valve has the defects that the piston of the electromagnetic valve is often controlled by a coil, and the electromagnetic valve has the following defects: firstly, the coil is usually made of enameled wires in a winding way, the requirement on the enameled wires is extremely high, the wire diameter of the enameled wires is required to be 0.06mm or even finer in order to adapt to the standard 220-240V 50/60Hz voltage, so that the manufacturing process of the fine enameled wires is high in difficulty and high in cost, and the fine enameled wires are easy to break in the process of winding the coil; secondly, when the existing electromagnetic valve is opened, the coil needs to be always electrified, so that not only is energy wasted, but also the long-time electrified coil can generate heat, so that certain potential safety hazard is caused; thirdly, the vibration of the piston can be caused under the condition of supplying alternating current to the coil, and noise is very easy to generate.

Disclosure of Invention

In order to solve the above problems, the present invention provides a solenoid valve controlled using an external controller without using a coil.

The invention is realized by the following technical scheme: the utility model provides a solenoid valve, includes valve body and control assembly, be provided with the sealing washer frame in the valve body, the sealing washer frame is provided with the mesopore in the upper and lower space of UNICOM sealing washer frame, and the mesopore top is provided with the piston that can plug up the mesopore, control assembly is including setting up the changeable device of magnetic force that can suck up the piston and the support of connecting control assembly outside the valve body on piston upper portion. The external magnetic force variable device is adopted to replace a coil to control the ascending and descending of the piston, the tightness of the original electromagnetic valve is not damaged, and the defects of high cost, high energy consumption, easy shaking and the like caused by using the coil to control are avoided.

Preferably, the magnetic force variable device comprises a magnetic force seat and a driving device, wherein a permanent magnet inside the magnetic force seat is connected with the driving device, and electrician software outside the magnetic force seat is fixedly connected to the bracket. The magnetic seat can drive the permanent magnet inside to generate two states of external magnetic and non-magnetic so as to control the piston, and a proper driving device is adopted according to the requirement, so that the whole control assembly is simpler in structure.

Preferably, the magnetic force variable device comprises a magnet arranged above the piston and a driving device capable of driving the magnet to rotate, the distance between the magnet and the piston is controlled by the rotation of the magnet, the piston is controlled, and the selectable driving device is various and can steplessly adjust the stress on the piston.

Preferably, the driving device comprises a stepping motor, and the stepping motor is used as the driving device, so that intelligent control is facilitated.

Preferably, the upper part of the piston is provided with a spring, the sealing ring frame divides the upper part of the valve body into a back pressure chamber and a water outlet chamber at the lower part, the periphery of the water outlet chamber is provided with a water inlet chamber, the middle hole is communicated with the back pressure chamber and the water outlet chamber, the sealing ring frame is provided with a side hole communicated with the back pressure chamber and the water inlet chamber, the aperture of the middle hole is larger than that of the side hole, and a water sealing port which can be sealed by the movement of the sealing ring frame is arranged between the water inlet chamber and the water outlet chamber. When the piston is lifted up, the sealing of the middle hole of the sealing frame is released, the medium of the back pressure chamber flows to the water outlet chamber through the middle hole of the sealing frame, and the sealing ring frame is lifted up, so that the medium directly flows to the water outlet from the water inlet through the water sealing port due to the pressure difference between the water inlet and the back pressure chamber caused by the inconsistent sizes of the side holes and the middle hole of the sealing ring frame. When the piston moves downwards, the piston cap plugs the hole in the sealing frame again, the medium cannot flow to the water outlet chamber, and the valve is closed.

Preferably, the tail end of the piston is sleeved with a piston cap, so that the sealing of the piston to the central hole is ensured.

Preferably, a sealing ring is arranged between the sealing ring frame and the shell of the valve body, so that the sealing between the valve body and the sealing ring frame is ensured.

Preferably, the sealing ring extends to the upper part of the water sealing port of the sealing ring frame, so that the sealing of the water sealing port is ensured.

Preferably, a water inlet and a corresponding water inlet assembly are arranged on the side face of the water inlet chamber, and a water outlet is arranged below the water outlet chamber.

Therefore, the invention has the following beneficial effects:

the external magnetic force variable device is adopted to replace a coil to control the ascending and descending of the piston, the tightness of the original electromagnetic valve is not damaged, and the defects of high cost, high energy consumption, easy shaking and the like caused by using the coil to control are avoided.

Drawings

FIG. 1 is a schematic perspective view of a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a first embodiment of the present invention;

FIG. 3 is a schematic view of a magnetic base according to a first embodiment of the present invention;

fig. 4 is a schematic perspective view of a second embodiment of the present invention.

In the figure: the valve body 1, the back pressure chamber 11, the water outlet chamber 12, the water inlet chamber 13, the sealing ring frame 2, the middle hole 21, the side hole 22, the water sealing port 23, the piston 3, the sealing ring 4, the water inlet assembly 5, the magnetic seat 6, the permanent magnet 61, the electrician software 62, the bracket 7, the stepping motor 8 and the magnet 9.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention.

An embodiment I, an electromagnetic valve, as shown in fig. 1-3, comprises a valve body 1 and a control component, a sealing ring frame 2 is arranged in the valve body 1, a middle hole 21 communicating with the upper space and the lower space of the sealing ring frame 2 is arranged in the center of the sealing ring frame 2, a piston 3 capable of blocking the middle hole 21 is arranged above the middle hole 21, a spring is arranged on the upper portion of the piston 3, the sealing ring frame 2 divides the upper portion of the valve body 1 into a back pressure chamber 11 and a lower water outlet chamber 12, a water inlet chamber 13 is arranged around the water outlet chamber 12, the middle hole 21 is communicated with the back pressure chamber 11 and the water outlet chamber 12, the sealing ring frame 2 is provided with a side hole 22 communicating with the back pressure chamber 11 and the water inlet chamber 13, the aperture of the middle hole 21 is larger than the side hole 22, a water sealing port 23 capable of being sealed by the movement of the sealing ring frame 2 is arranged between the water inlet chamber 13 and the water outlet chamber 12, a piston cap is sleeved at the tail end of the piston 3, a sealing ring 4 is arranged between the sealing ring frame 2 and a shell of the valve body 1, the sealing ring 4 extends to the upper part of the water sealing port 23 of the sealing ring frame 2, a water inlet 13 is provided with a water inlet and a corresponding water inlet component 5, and a water outlet 12 is arranged below the water outlet 12.

The control assembly comprises a magnetic seat 6 which is arranged on the upper part of the piston 3 and can suck the piston 3, a bracket 7 which connects the control assembly outside the valve body 1, and a stepping motor 8, wherein a permanent magnet 61 in the magnetic seat 6 is connected with a main shaft of the stepping motor, and an electrician software 62 outside the magnetic seat 6 is fixedly connected on the bracket 7, and the electrician software 62 is divided into two symmetrical halves and is connected through brass.

The stepping motor 8 is adopted to control the magnetic seat 6, and the magnetic seat 6 is adopted to control the lifting and descending of the piston 3, so that the defects of high cost, high energy consumption, easy shaking and the like caused by using coil control are avoided while the tightness of the original electromagnetic valve is not damaged.

The specific working principle is as follows:

when the stepping motor 8 rotates the permanent magnet 61 to a vertical state, the magnetic force on the magnetic seat 6 disappears, the piston 3 is pressed down by the action of the spring, the sealing ring frame 2 is pressed down, the middle hole 21 of the sealing ring frame 2 is sealed through the cap of the piston 3, at the moment, the sealing ring cuts off the flow channels of the water inlet chamber 13 and the water outlet chamber 12, and the valve is in a closed state. At this time, the water in the water inlet chamber 13 enters the back pressure chamber 11 through the side hole 22 of the sealing ring frame 2, the pressure in the water inlet chamber 13 is transferred into the back pressure chamber 11, the pressure in the back pressure chamber 11 and the pressure in the water inlet chamber 13 are equal and larger than the pressure in the water outlet chamber 12, so that the sealing ring is tightly pressed on the water sealing port 23, and the valve is always in a closed state.

When the stepping motor 8 rotates the permanent magnet 61 to a horizontal state, magnetic force is generated on the magnetic seat 6, the piston 3 is attracted to move upwards and compress the spring, the middle hole 21 of the sealing ring frame 2 which is sealed originally is opened, and high-pressure water in the back pressure chamber 11 flows into the water outlet chamber 12 through the middle hole 21 and is discharged; after part of water in the pressurized chamber is discharged, the pressure in the back pressure chamber 11 is reduced, the pressure in the water inlet chamber 13 is larger than that in the pressurized chamber, the sealing ring frame 2 moves upwards, the water sealing mouth 23 is opened, the water inlet chamber 13 is communicated with the water discharge chamber, and the water inlet of the valve is directly discharged from the water inlet chamber 13 to the water discharge chamber, so that the electromagnetic valve is in an open state.

In the second embodiment, as shown in fig. 4, the magnetic force variable device is in a form of mounting a bar-shaped magnet 9 above the piston 3 on the output shaft of the stepper motor 8, and other arrangements are the same as those in the first embodiment, and the piston 3 is controlled by rotating the magnet 9, and the force applied to the piston 3 can be steplessly adjusted.

Claims

1. An electromagnetic valve, includes valve body and control assembly, its characterized in that: the valve body is internally provided with a sealing ring frame, the sealing ring frame is provided with a middle hole communicated with the upper space and the lower space of the sealing ring frame, a piston capable of blocking the middle hole is arranged above the middle hole, the control assembly comprises a magnetic force variable device which is arranged on the upper part of the piston and capable of sucking the piston and a bracket which is connected with the control assembly outside the valve body, and the magnetic force variable device comprises a magnet arranged above the piston and a driving device capable of driving the magnet to rotate.

2. The solenoid valve according to claim 1, wherein: the magnetic force variable device comprises a magnetic force seat and a driving device, a permanent magnet inside the magnetic force seat is connected with the driving device, and electrician software outside the magnetic force seat is fixedly connected to the bracket.

3. The solenoid valve according to claim 2, characterized in that: the driving device comprises a stepping motor.

4. The solenoid valve according to claim 1 or 2, characterized in that: the upper part of the piston is provided with a spring, the sealing ring frame divides the upper part of the valve body into a back pressure chamber and a water outlet chamber at the lower part, the periphery of the water outlet chamber is provided with a water inlet chamber, the middle hole is communicated with the back pressure chamber and the water outlet chamber, the sealing ring frame is provided with a side hole communicated with the back pressure chamber and the water inlet chamber, the aperture of the middle hole is larger than the side hole, and a water sealing port which can be sealed by the movement of the sealing ring frame is arranged between the water inlet chamber and the water outlet chamber.

5. The solenoid valve according to claim 1 or 2, characterized in that: the tail end of the piston is sleeved with a piston cap.

6. The solenoid valve according to claim 1 or 2, characterized in that: and a sealing ring is arranged between the sealing ring frame and the valve body.

7. The solenoid valve according to claim 4, wherein: the sealing ring extends to the upper part of the water sealing port of the sealing ring frame.

8. The solenoid valve according to claim 4, wherein: the side of the water inlet chamber is provided with a water inlet and a corresponding water inlet assembly, and a water outlet is arranged below the water outlet chamber.