Electromagnetic stop valve

Abstract

The utility model relates to the technical field of electromagnetic stop valves, in particular to an electromagnetic stop valve which comprises a magnetism isolating pipe, a first fixed magnet is arranged at the top in the magnetism isolating pipe, a first spring is arranged at the bottom of the first fixed magnet, the bottom of the first spring is connected with a first movable magnet, and limiting grooves are formed in the two sides of the top end of the first movable magnet. A telescopic groove is formed in the periphery of the bottom end of the magnetism isolating pipe, a second fixed magnet is arranged in the telescopic groove, a second spring is arranged on the inner side of the second fixed magnet, and a second movable magnet is connected to the outer side of the second spring. The electromagnetic stop valve has the beneficial effects that when the stop valve is closed, the coil is not electrified, the magnetic force of the first fixed magnet and the first movable magnet is ablated, the first spring bounces off the first movable magnet through tension, the valve element at the bottom of the first movable magnet is inserted into the dredging opening formed in the middle of the valve seat, and the dredging opening is closed.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic stop valves, and specifically relates to an electromagnetic stop valve. Background Technique

[0002] An electromagnetic stop valve is a device that uses electromagnetic force to control the opening and closing of a valve, and is widely used in various gas circuit systems and hydraulic systems to control the opening and closing of gases or liquids.

[0003] In the prior art, the working principle of an electromagnetic stop valve is that when the electromagnetic coil is energized, the generated magnetic field acts on the valve, generating an attractive force or a repulsive force, thereby realizing the opening or closing of the valve. Specifically, when the coil is not energized, the valve is in a closed state, and the medium cannot flow through the valve; after being energized, the magnetic force causes the valve core to move, opening the valve, and the medium can flow through; when the power is cut off, the valve core quickly closes the valve under the action of forces such as a spring, stopping the flow of the medium.

[0004] However, in the prior art, when the spring of the electromagnetic stop valve is used for a long time, the spring may undergo elastic fatigue after a certain number of deformations under cyclic loading, resulting in insufficient elasticity. When a gas or liquid with a large pressure impacts the valve seat, it is very easy to flush the valve core off the valve seat, resulting in incomplete sealing of the valve. Content of the Utility Model

[0005] The purpose of the utility model is to provide an electromagnetic stop valve to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A coil housing is arranged at the top of the middle part of the valve body. A magnetic isolation tube is arranged in the middle of the interior of the coil housing. A first fixed magnet is arranged at the top of the interior of the magnetic isolation tube. A first spring is arranged at the bottom of the first fixed magnet. The bottom of the first spring is connected to a first moving magnet. Limiting grooves are opened on both sides of the top end of the first moving magnet; and telescopic grooves are opened around the bottom end of the magnetic isolation tube. A second fixed magnet is arranged in the telescopic grooves. A second spring is arranged inside the second fixed magnet. The outside of the second spring is connected to a second moving magnet.

[0007] Preferably, connection ports are opened on both sides of the valve body, and the valve body is connected to a gas or liquid pipeline through the connection ports.

[0008] Preferably, a valve core is arranged at the bottom of the first moving magnet. The valve core is parallel to the dredging port opened in the middle of the valve seat. The valve core can be inserted into the dredging port to close the dredging port.

[0009] Preferably, a coil is provided on the outer side of the magnetic isolation tube at the connection port. When the coil is energized, a magnetic field is generated, causing the first fixed magnet and the first movable magnet to attract each other magnetically, so that the first movable magnet squeezes the first spring, driving the valve core at the bottom of the first movable magnet to open and unblock the through hole in the middle of the valve seat.

[0010] Preferably, the telescopic groove is opened at the inner bottom end of the magnetic isolation tube. When the coil is energized to generate a magnetic field, the second fixed magnet and the second movable magnet can attract each other magnetically, and the second movable magnet is contracted into the telescopic groove.

[0011] Preferably, limiting grooves are opened around the top of the first movable magnet, and the second movable magnet can be inserted into the limiting grooves to hold and limit the first movable magnet, preventing the medium from flushing the valve core out of the through hole opened in the middle of the valve seat.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] For an electromagnetic stop valve proposed by the present utility model, when the stop valve is closed, the coil is de-energized, the magnetic force between the first fixed magnet and the first movable magnet disappears, and the first spring bounces the first movable magnet away through the tension, so that the valve core at the bottom of the first movable magnet is inserted into the through hole opened in the middle of the valve seat to close the through hole; at the same time, the magnetic force between the second fixed magnet and the second movable magnet disappears, so that the second spring pops the second movable magnet out of the telescopic groove through the tension, and the front end of the second movable magnet is inserted into the limiting grooves opened around the top of the first movable magnet to hold and limit the first movable magnet, preventing the first spring from undergoing elastic fatigue after a certain number of deformations under cyclic loading after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a sectional structural schematic diagram of the present utility model;

[0016] Figure 3 is a sectional structural schematic diagram of the other side of the present utility model.

[0017] In the figure: valve body 1, coil housing 2, connection port 3, magnetic isolation tube 4, coil 5, first fixed magnet 6, first spring 7, first movable magnet 8, valve seat 9, valve core 10, telescopic groove 11, second fixed magnet 12, second spring 13, second movable magnet 14, limiting groove 15. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to clearly and completely describe the purpose, technical solution of the present utility model, and make its advantages more clearly understood, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0019] Please refer to Figures 1 to 3 , the present utility model provides a technical solution: a coil housing 2 is provided at the middle top of the valve body 1, a magnetic isolation tube 4 is provided in the middle of the interior of the coil housing 2, a first fixed magnet 6 is provided at the top inside the magnetic isolation tube 4, a first spring 7 is provided at the bottom of the first fixed magnet 6, the bottom of the first spring 7 is connected to a first moving magnet 8, and limiting grooves 15 are provided on both sides of the top end of the first moving magnet 8; and telescopic grooves 11 are provided around the bottom end of the magnetic isolation tube 4, a second fixed magnet 12 is provided in the telescopic grooves 11, a second spring 13 is provided inside the second fixed magnet 12, and the outside of the second spring 13 is connected to a second moving magnet 14; connection ports 3 are provided on both sides of the valve body 1, and the valve body 1 is connected to a gas or liquid pipeline through the connection ports 3; a valve core 10 is provided at the bottom of the first moving magnet 8, the valve core 10 is parallel to the dredging port provided in the middle of the valve seat 9, and the valve core 10 can be inserted into the dredging port to close the dredging port; a coil 5 is provided outside the magnetic isolation tube 4 at the connection port 3, and when the coil 5 is energized, a magnetic field is generated, causing the first fixed magnet 6 and the first moving magnet 8 to generate magnetic attraction, causing the first moving magnet 8 to squeeze the first spring 7, driving the valve core 10 at the bottom of the first moving magnet 8 to open the closure of the dredging port in the middle of the valve seat 9; the telescopic grooves 11 are provided at the inner bottom end of the magnetic isolation tube 4, and when the coil 5 is energized to generate a magnetic field, the second fixed magnet 12 and the second moving magnet 14 can generate magnetic attraction, contracting the second moving magnet 14 into the telescopic grooves 11; limiting grooves 15 are provided around the top end of the first moving magnet 8, and the second moving magnet 14 can be inserted into the limiting grooves 15 to hold and limit the first moving magnet 8, preventing the medium from flushing the valve core 10 out of the dredging port provided in the middle of the valve seat 9.

[0020] In actual use, when the globe valve is opened, the coil 5 generates a magnetic field when energized, causing the second fixed magnet 12 and the second moving magnet 14 to attract each other magnetically, squeezing and contracting the second spring 13 into the telescopic groove 11 by the second moving magnet 14, and causing the inner front end of the second moving magnet 14 to fall off from the limiting groove 15 formed around the top of the first moving magnet 8, canceling the clamping limit on the first moving magnet 8. After that, the first fixed magnet 6 and the first moving magnet 8 generate magnetic forces simultaneously. The first fixed magnet 6 and the first moving magnet 8 attract each other, causing the first moving magnet 8 to squeeze the first spring 7, lifting the first moving magnet 8, driving the valve core 10 at the bottom of the first moving magnet 8 to be withdrawn from the delivery port formed in the valve seat 9, opening the closure of the dredging port, and enabling the medium to flow in the valve body 1. When the globe valve is closed, the coil 5 is de-energized, the magnetic forces between the first fixed magnet 6 and the first moving magnet 8 disappear, and the first spring 7 bounces the first moving magnet 8 away through its tension, causing the valve core 10 at the bottom of the first moving magnet 8 to be inserted into the dredging port formed in the middle of the valve seat 9 to close the dredging port. At the same time, the magnetic forces between the second fixed magnet 12 and the second moving magnet 14 disappear, causing the second spring 13 to eject the second moving magnet 14 from the telescopic groove 11 through its tension, and causing the front end of the second moving magnet 14 to be inserted into the limiting groove 15 formed around the top of the first moving magnet 8 to clamp and limit the first moving magnet 8, preventing the first spring 7 from undergoing elastic fatigue after a certain number of deformations under cyclic loading after long-term use. Although the above describes the illustrative specific embodiments of the present application for the convenience of those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as all changes are within the spirit and scope of the present application defined and determined by the appended claims, all applications and creations using the concept of the present application are within the scope of protection.

Claims

1. A solenoid stop valve, characterized in that: include: A coil housing (2) is arranged at the top of the middle of the valve body (1), a magnetic isolation tube (4) is arranged at the middle of the inner part of the coil housing (2), a first fixed magnet (6) is arranged at the top of the inner part of the magnetic isolation tube (4), a first spring (7) is arranged at the bottom of the first fixed magnet (6), the bottom of the first spring (7) is connected to the first moving magnet (8), and limiting grooves (15) are arranged on both sides of the top of the first moving magnet (8); and A telescopic groove (11) is provided around the bottom end of the magnetic isolation tube (4), a second fixed magnet (12) is arranged in the telescopic groove (11), a second spring (13) is arranged on the inner side of the second fixed magnet (12), and the outer side of the second spring (13) is connected to the second moving magnet (14).

2. The electromagnetic stop valve according to claim 1, characterized in that: The valve body (1) is provided with connection ports (3) on both sides, and the valve body (1) is connected to a gas or liquid pipeline via the connection ports (3).

3. The electromagnetic stop valve according to claim 2, characterized in that: A valve core (10) is provided at the bottom of the first moving magnet (8), and the valve core (10) is parallel to a dredging opening opened in the middle of the valve seat (9). The valve core (10) can be inserted into the dredging opening to close the dredging opening.

4. The electromagnetic stop valve according to claim 3, characterized in that: The connection port (3) is provided with a coil (5) on the outside of the magnetic isolation tube (4). When the coil (5) is energized, a magnetic field is generated, causing the first fixed magnet (6) and the first moving magnet (8) to generate magnetic attraction, causing the first moving magnet (8) to press the first spring (7), thereby driving the valve core (10) at the bottom of the first moving magnet (8) to open the dredging port in the middle of the valve seat (9).

5. The electromagnetic stop valve according to claim 4, characterized in that: The telescopic groove (11) is provided at the inner bottom end of the magnetic isolation tube (4), and the coil (5) is energized to generate a magnetic field, which can cause the second fixed magnet (12) and the second moving magnet (14) to generate magnetic attraction, thereby shrinking the second moving magnet (14) into the telescopic groove (11).

6. The electromagnetic stop valve according to claim 5, characterized in that: The top of the first moving magnet (8) is provided with a limiting groove (15) around it, and the second moving magnet (14) can be inserted into the limiting groove (15) to hold and limit the first moving magnet (8) to prevent the medium from impacting the valve core (10) out from the dredging port provided in the middle of the valve seat (9).

Images