CN114811155A

CN114811155A - Electromagnetic valve

Info

Publication number: CN114811155A
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: 2022-07-29
Anticipated expiration: 2041-12-20
Also published as: CN114811155B

Abstract

The invention discloses an electromagnetic valve which comprises a valve body and a control assembly, wherein a sealing ring frame is arranged in the valve body, a center hole communicated with the upper space and the lower space of the sealing ring frame is formed in the center of the sealing ring frame, a piston capable of plugging the center hole is arranged above the center hole, and the control assembly comprises a magnetic force variable device and a support, wherein the magnetic force variable device is arranged on the upper portion of the piston and can suck the piston, and the support is used for connecting the control assembly outside the valve body. The external magnetic force variable device is adopted to replace a coil to control the ascending and descending of the piston, the sealing performance of the original electromagnetic valve is not damaged, and the defects of high cost, high energy consumption, easiness in shaking and the like caused by the control of the coil are overcome.

Description

Electromagnetic valve

Technical Field

The present invention relates to solenoid valves, and more particularly to a solenoid valve controlled by a non-coil.

Background

The existing electromagnetic valve for controlling water flow of equipment such as washing machines, water heaters and the like is generally provided with a coil at the upper end, for example, "an antifouling water inlet electromagnetic valve", published in Chinese patent literature, and the publication is CN207777680U, and comprises a valve body, wherein an inner sleeve is arranged in the valve body, a spring and an iron core are arranged in the inner sleeve, a rubber core is arranged at the end part of the iron core, a magnetic force control spring and a coil for the ascending movement of the iron core are arranged on the outer ring of the inner sleeve, a sealing ring frame component and a sealing ring are arranged in the valve body, the valve body is divided into a backpressure chamber, a water inlet chamber and a water outlet chamber by the sealing ring frame component and the sealing ring, the sealing ring seals the water inlet chamber and the water outlet chamber, a side hole is communicated with the backpressure chamber and the water inlet chamber, the working principle is that after the coil is electrified, a magnetic field is generated to attract a piston in the shaft sleeve to resist the upward movement in a spring eye at the upper part of the shaft sleeve, a piston cap is driven by the piston to release the sealing of the hole in the sealing frame, the medium of back pressure chamber flows to the delivery port through the seal frame mesopore, because seal frame limit hole and mesopore size nonconformity have caused the pressure differential of water inlet and back pressure chamber, the sealing washer is by jack-up, and the medium is from the water inlet through the direct delivery port that flows to of water seal face. After the power supply to the coil is stopped, the piston falls back under the action of the spring, the hole in the sealing frame is blocked by the piston cap again, the medium cannot flow to the water outlet, and the valve is closed.

The existing solenoid valve, its piston often adopts the coil to control, and its shortcoming is: firstly, the coil is usually made by winding an enameled wire, and the requirement on the enameled wire is extremely high, in order to adapt to the standard voltage of 220-240V 50/60Hz, the wire diameter of the enameled wire is required to be 0.06mm or even thinner, so that the thin enameled wire has higher manufacturing process difficulty and higher cost, and is easy to break in the process of winding the coil; secondly, when the existing electromagnetic valve is opened, the coil needs to be electrified all the time, so that not only is energy waste caused, but also a certain potential safety hazard is caused by heating of the coil after long-time electrification; thirdly, the shaking of the piston can be caused under the condition that the coil is electrified with alternating current, and noise is easy to generate.

Disclosure of Invention

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

The invention is realized by the following technical scheme: a solenoid valve comprises a valve body and a control assembly, wherein a sealing ring frame is arranged in the valve body, a middle hole communicated with the upper space and the lower space of the sealing ring frame is formed in the sealing ring frame, a piston capable of blocking the middle hole is arranged above the middle hole, and the control assembly comprises a magnetic force variable device arranged on the upper portion of the piston and capable of sucking up the piston and a support connecting the control assembly outside the valve body. The external magnetic force variable device is adopted to replace a coil to control the ascending and descending of the piston, the sealing performance of the original electromagnetic valve is not damaged, and the defects of high cost, high energy consumption, easiness in shaking and the like caused by the control of the coil are overcome.

Preferably, the magnetic force variable device comprises a magnetic force seat and a driving device, the permanent magnet inside the magnetic force seat is connected with the driving device, and the electrical software outside the magnetic force seat is fixedly connected to the bracket. The magnetic base can drive the permanent magnet inside to generate two states of external magnetism and non-magnetism, the piston is controlled, and a suitable driving device is adopted as required, 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 through the rotation of the magnet, the piston is controlled, the selectable driving devices are various, and the stress on the piston can be adjusted in a stepless mode.

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, a spring is arranged on the upper portion of the piston, the sealing ring frame divides the upper portion of the valve body into a back pressure chamber and a water outlet chamber on the lower portion, a water inlet chamber is arranged on the periphery of the water outlet 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 diameter of the middle hole is larger than that of the side hole, and a water sealing opening capable of being sealed by 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, the sealing ring frame is jacked up due to the pressure difference between the water inlet and the back pressure chamber caused by the inconsistent sizes of the side hole and the middle hole of the sealing ring frame, and the medium directly flows to the water outlet from the water inlet through the water sealing port. 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 to ensure the sealing of the piston centering hole.

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

Preferably, the sealing ring extends to the upper part of the water sealing port of the sealing ring frame to ensure the sealing of the water sealing port.

Preferably, a water inlet and a corresponding water inlet assembly are arranged on the side surface 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 sealing performance of the original electromagnetic valve is not damaged, and the defects of high cost, high energy consumption, easiness in shaking and the like caused by the control of the coil are overcome.

Drawings

FIG. 1 is a 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 water inlet valve comprises a valve body 1, a back pressure chamber 11, a water outlet chamber 12, a water inlet chamber 13, a sealing ring frame 2, a middle hole 21, a side hole 22, a water sealing port 23, a piston 3, a sealing ring 4, a water inlet assembly 5, a magnetic seat 6, a permanent magnet 61, an electrical software 62, a support 7, a stepping motor 8 and a magnet 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit 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 orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Embodiment one, as shown in fig. 1-3, an electromagnetic valve includes a valve body 1 and a control assembly, a sealing ring frame 2 is disposed in the valve body 1, a center hole 21 communicating upper and lower spaces of the sealing ring frame 2 is disposed in the center of the sealing ring frame 2, a piston 3 capable of plugging the center hole 21 is disposed above the center hole 21, a spring is disposed 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 disposed around the water outlet chamber 12, the center hole 21 communicates the back pressure chamber 11 and the water outlet chamber 12, the sealing ring frame 2 is provided with an edge hole 22 communicating the back pressure chamber 11 and the water inlet chamber 13, the diameter of the center hole 21 is larger than that of the edge hole 22, a water sealing port 23 capable of being sealed by movement of the sealing ring frame 2 is disposed between the water inlet chamber 13 and the water outlet chamber 12, a piston cap is sleeved on the end of the piston 3, a sealing ring 4 is disposed between the sealing ring frame 2 and a housing of the valve body 1, the sealing ring 4 extends to the upper part of a water sealing port 23 of the sealing ring frame 2, a water inlet and a corresponding water inlet assembly 5 are arranged on the side surface of the water inlet chamber 13, and a water outlet is arranged below the water outlet chamber 12.

The control assembly comprises a magnetic base 6 arranged on the upper part of the piston 3 and capable of sucking up the piston 3, a support 7 connecting the control assembly outside the valve body 1 and a stepping motor 8, a permanent magnet 61 inside the magnetic base 6 is connected with a main shaft of the stepping motor, an electrical software 62 outside the magnetic base 6 is fixedly connected on the support 7, and the electrical software 62 is divided into two symmetrical halves and is connected through brass.

The stepping motor 8 is adopted to control the magnetic base 6, and then the magnetic base 6 is used to control the rising and falling of the piston 3, so that the defects of high cost, large energy consumption, easy shaking and the like caused by using coil control are avoided while the sealing performance of the original electromagnetic valve is not damaged.

The specific working principle is as follows:

when the permanent magnet 61 is rotated to be in a vertical state by the stepping motor 8, the magnetic force on the magnetic base 6 disappears, the piston 3 is pressed down under the action of the spring, the sealing ring frame 2 is pressed down and the middle hole 21 of the sealing ring frame 2 is sealed through the piston 3 cap, at the moment, the flow channels of the water inlet chamber 13 and the water outlet chamber 12 are cut off by the sealing ring, and the valve is in a closed state. At this time, water in the water inlet chamber 13 enters the back pressure chamber 11 through the side hole 22 of the seal ring frame 2, the pressure of the water inlet chamber 13 is transmitted into the back pressure chamber 11, the pressure of the back pressure chamber 11 is equal to that of the water inlet chamber 13 and is greater than that of the water outlet chamber 12, so that the seal 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 base 6, the piston 3 is attracted to move upwards and compress the spring, the hole 21 in 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 hole 21 and is discharged; after part of water in the pressure receiving chamber is discharged, the pressure of the back pressure chamber 11 is reduced, the pressure of the water inlet chamber 13 is higher than that of the pressure receiving chamber, the sealing ring frame 2 moves upwards, the water sealing port 23 is opened, the water inlet chamber 13 is communicated with the water discharge chamber, and the water inlet of the valve directly flows from the water inlet chamber 13 to the water discharge chamber to be discharged, so that the electromagnetic valve is in an open state.

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

Claims

1. A solenoid 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 plugging the middle hole is arranged above the middle hole, and the control assembly comprises a magnetic force variable device arranged on the upper part of the piston and capable of sucking up the piston and a support connecting the control assembly outside the valve body.

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 an electrical software outside the magnetic force seat is fixedly connected to the support.

3. The solenoid valve according to claim 1, wherein: the magnetic force variable device comprises a magnet arranged above the piston and a driving device capable of driving the magnet to rotate.

4. A solenoid valve according to claim 2 or 3, wherein: the driving device comprises a stepping motor.

5. A solenoid valve according to claim 1, 2 or 3, wherein: the upper part of the piston is provided with a spring, the upper part of the valve body is divided into a back pressure chamber and a water outlet chamber at the lower part by the sealing ring frame, 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 opening which can be sealed by the movement of the sealing ring frame is arranged between the water inlet chamber and the water outlet chamber.

6. A solenoid valve according to claim 1, 2 or 3, wherein: and the tail end of the piston is sleeved with a piston cap.

7. A solenoid valve according to claim 1, 2 or 3, wherein: and a sealing ring is arranged between the sealing ring frame and the valve body.

8. The solenoid valve according to claim 5, wherein: the sealing ring extends to the upper part of a water sealing opening of the sealing ring frame.

9. The solenoid valve according to claim 5, wherein: the water inlet chamber is provided with a water inlet and a corresponding water inlet assembly on the side face, and a water outlet is arranged below the water outlet chamber.