Two-position three-way direct-acting electromagnetic valve

Abstract

The two-position three-way direct-acting electromagnetic valve comprises an electromagnetic valve body, the electromagnetic valve body is provided with a valve shell and a movable iron core installed in the valve shell in a sliding mode, the valve shell is provided with an air inlet, an air outlet and a working opening, the movable iron core is provided with a valve element, the valve element is matched with the valve shell in a sliding mode, and the movable iron core is sleeved with a spring. The two ends of the spring abut against the valve shell and the valve element respectively, the air inlet, the exhaust port and the working port are distributed in a delta shape, the air inlet and the exhaust port are located on one side of the valve shell, the working port is located on the other side of the valve shell, the valve element is symmetrically provided with an exhaust channel and an air inlet channel, and the exhaust channel is matched with the exhaust port and the working port. And the air inlet channel is matched with the air inlet and the working port. The valve element of the electromagnetic valve does not need to completely move away from the distance between the air inlet and the air outlet in the valve shell, switching of the opening state or the closing state of the air inlet, the air outlet and the working opening can be achieved through extremely small displacement, the stroke of the valve element is short, response is fast, and the small and exquisite design of the electromagnetic valve is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve technology, and in particular to a two-position three-way direct-acting solenoid valve. Background Technology

[0002] Solenoid valves are one of the main control components used in pneumatic shell-breaking equipment (such as shell-breaking cylinders) and are used frequently. Existing solenoid valves, such as the Chinese utility model patent with publication number CN218177999U entitled "A Two-Position Three-Way Direct-Acting Solenoid Valve", have an inlet, an outlet, and a working port. When the valve is turned on or off, the piston (also called the valve core) needs to reach the position of the inlet or outlet completely. This means that the piston stroke must cover the entire distance between the inlet and outlet, resulting in a long stroke and a long response time. It is also not conducive to the miniaturization of solenoid valves. Utility Model Content

[0003] The purpose of this invention is to provide a two-position three-way direct-acting solenoid valve to solve the problems of existing solenoid valves having a long piston stroke, resulting in a long response time and hindering the miniaturization of solenoid valves.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A two-position three-way direct-acting solenoid valve includes a solenoid valve body. The solenoid valve body has a valve housing and a moving iron core slidably installed in the valve housing. The valve housing is provided with an air inlet, an exhaust port, and a working port. The moving iron core is provided with a valve core, which is slidably engaged with the valve housing. A spring is fitted onto the moving iron core, with its two ends abutting against the valve housing and the valve core, respectively. The air inlet, the exhaust port, and the working port are arranged in a triangular pattern. The air inlet and the exhaust port are located on one side of the valve housing, and the working port is located on the other side of the valve housing. The valve core is symmetrically provided with an exhaust channel and an air inlet channel. The exhaust channel is adapted to the exhaust port and the working port, and the air inlet channel is adapted to the air inlet and the working port.

[0006] A further technical solution is that the closest distance between the exhaust channel and the intake channel is not less than the distance between the intake port and the exhaust port.

[0007] A further technical solution is that the exhaust channel and the intake channel are in a figure-eight shape, and the ends of the exhaust channel and the intake channel that are close to each other face the working port.

[0008] A further technical solution is that the horizontal distance between the two ends of the exhaust channel or the intake channel is adapted to the horizontal distance between the intake port and the working port or the exhaust port and the working port.

[0009] A further technical solution is that sealing rings are provided on both sides of the exhaust channel and the intake channel.

[0010] A further technical solution is that the spring is located near the power component of the solenoid valve body.

[0011] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0012] This invention proposes a two-position three-way direct-acting solenoid valve. The valve core of this solenoid valve does not need to travel the entire distance between the air inlet and the exhaust port on the valve body. It can switch the air inlet and exhaust port to the working port with a very small displacement. The valve core has a short stroke, fast response, and is conducive to the compact design of the solenoid valve. In addition, the valve core is large enough, and the increased mass can effectively prevent false start caused by external magnetic fields or incomplete power cut-off. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a two-position three-way direct-acting solenoid valve according to the present invention.

[0014] Figure 2 For this utility model Figure 1 A structural diagram.

[0015] Reference numerals in the attached diagram: 1. Valve housing; 2. Moving iron core; 3. Air inlet; 4. Air outlet; 5. Working port; 6. Valve core; 7. Spring; 8. Air outlet passage; 9. Air inlet passage; 10. Sealing ring. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1:

[0023] This implementation example Figure 1 and Figure 2 As shown, a two-position three-way direct-acting solenoid valve includes a solenoid valve body. The solenoid valve body has a valve housing 1 and a moving iron core 2 slidably installed in the valve housing 1. The valve housing 1 is provided with an air inlet 3, an exhaust port 4, and a working port 5. The moving iron core 2 is provided with a valve core 6, which is slidably engaged with the valve housing 1. A spring 7 is fitted on the moving iron core 2, with the two ends of the spring 7 abutting against the valve housing 1 and the valve core 6, respectively. The air inlet 3, exhaust port 4, and working port 5 are arranged in a triangular pattern. The air inlet 3 and exhaust port 4 are located on one side of the valve housing 1, and the working port 5 is located on the other side of the valve housing 1. The valve core 6 is symmetrically provided with an exhaust channel 8 and an air inlet channel 9. The exhaust channel 8 is adapted to the exhaust port 4 and the working port 5, and the air inlet channel 9 is adapted to the air inlet 3 and the working port 5.

[0024] When the solenoid valve is energized, the coil generates a magnetic field. Under the influence of this magnetic field, the moving iron core 2 overcomes the spring force of the spring 7 and begins to move. Figure 1To the right, until the air intake channel 9 connects the air intake port 3 and the working port 5, the gas from the external air source enters the gas-using equipment through the air intake channel 9. After the power is turned off, the magnetic field disappears, the spring 7 loses its force and begins to extend, pushing the moving iron core 2 along... Figure 1 Move from the center to the left until the exhaust passage 8 connects the exhaust port 4 and the working port 5.

[0025] It is worth noting that the sliding fit between the valve core 6 and the valve body 1 can be achieved through a square structure, such as the valve core 6 and the valve body 1 having a quadrilateral cross-section.

[0026] Preferably, the closest distance between the exhaust passage 8 and the intake passage 9 is not less than the distance between the intake port 3 and the exhaust port 4.

[0027] This is used to ensure that when either the exhaust passage 8 or the intake passage 9 is connected, it will not affect the closure of the other passage.

[0028] Preferably, the exhaust passage 8 and the intake passage 9 are in a figure-eight shape, and the ends of the exhaust passage 8 and the intake passage 9 that are close to each other face the working port 5.

[0029] The figure-eight-shaped exhaust passage 8 and intake passage 9 can shorten the stroke of valve core 6 as much as possible.

[0030] Preferably, the horizontal distance between the two ends of the exhaust passage 8 or the intake passage 9 is adapted to the horizontal distance between the intake port 3 and the working port 5 or the exhaust port 4 and the working port 5.

[0031] This ensures that no air leakage occurs from the exhaust channel 8 or the intake channel 9 when the valve core 6 moves.

[0032] Preferably, sealing rings 10 are provided on both sides of the exhaust passage 8 and the intake passage 9.

[0033] To prevent air leakage from the sliding fit clearance when the valve core 6 moves.

[0034] Preferably, the spring 7 is located near the power section of the solenoid valve body.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A two-position three-way direct-acting solenoid valve, comprising a solenoid valve body, the solenoid valve body having a valve housing (1) and a moving iron core (2) slidably mounted within the valve housing (1), the valve housing (1) being provided with an air inlet (3), an air outlet (4), and a working port (5), characterized in that: A valve core (6) is provided on the moving iron core (2). The valve core (6) slides with the valve housing (1). A spring (7) is fitted on the moving iron core (2). The two ends of the spring (7) abut against the valve housing (1) and the valve core (6) respectively. The air inlet (3), the exhaust outlet (4) and the working port (5) are arranged in a triangular pattern. The air inlet (3) and the exhaust outlet (4) are located on one side of the valve housing (1), and the working port (5) is located on the other side of the valve housing (1). An exhaust channel (8) and an air inlet channel (9) are symmetrically arranged on the valve core (6). The exhaust channel (8) is adapted to the exhaust outlet (4) and the working port (5), and the air inlet channel (9) is adapted to the air inlet (3) and the working port (5).

2. The two-position three-way direct-acting solenoid valve according to claim 1, characterized in that: The closest distance between the exhaust passage (8) and the intake passage (9) is not less than the distance between the intake port (3) and the exhaust port (4).

3. The two-position three-way direct-acting solenoid valve according to claim 1, characterized in that: The exhaust passage (8) and the intake passage (9) are in a figure-eight shape, and the ends of the exhaust passage (8) and the intake passage (9) that are close to each other face the working port (5).

4. The two-position three-way direct-acting solenoid valve according to claim 1, characterized in that: The horizontal distance between the two ends of the exhaust channel (8) or the intake channel (9) is adapted to the horizontal distance between the intake port (3) and the working port (5) or the exhaust port (4) and the working port (5).

5. The two-position three-way direct-acting solenoid valve according to claim 1, characterized in that: Both sides of the exhaust channel (8) and the intake channel (9) are provided with sealing rings (10).

6. The two-position three-way direct-acting solenoid valve according to claim 1, characterized in that: The spring (7) is located near the power section of the solenoid valve body.

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