Switch electromagnetic valve with adjustable rear yoke
By setting up a threaded hole on the cover of the switching solenoid valve, and connecting the thread of the rear iron iron on the screw hole, the position of the rear iron iron can be adjusted, solving The problem cannot be adjusted, and the online adjustment and consistency guarantee of turning on the current.
Patent Information
- Application Number
- CN202420158204.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-22
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-01-22
AI Technical Summary
The rear yoke of the existing switched solenoid valve is fixedly installed, and the tension of the spring cannot be adjusted, resulting in the opening degree of the solenoid valve being unable to be adjusted, affecting the consistency of the opening current.
Design a rear -iron -can be adjusted switching solenoid valve. By setting up a threaded hole on the cover, and connecting the threads of the rear iron iron on the screw hole, the front and rear positions of the rear iron can be adjusted to adjust the spring, so as to adjust the spring of the spring tension.
The online adjustment of the turnover of the switching solenoid valve is realized, ensuring the consistency of the current product opening current.
Smart Images
Figure CN222416136U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a switch electromagnetic valve, in particular to a rear yoke iron installation structure of the switch electromagnetic valve. Background Art
[0002] A switch solenoid valve, wherein the moving iron core is arranged in a coil assembly, and a cover plate for closing the rear opening of the coil assembly is arranged at the rear end thereof, and a rear yoke is arranged on the cover plate, and a spring is arranged between the rear yoke and the moving iron core. The spring drives the push rod at the front end of the moving iron core to support the valve ball through its tension to close the front valve hole but open the rear valve hole to conduct the oil drain port and the oil control port. The coil assembly drives the moving iron core to overcome the tension of the spring and drive the push rod to retreat to open the front valve hole but close the rear valve hole to conduct the oil control port and the oil inlet port, thereby realizing the conversion of the oil circuit. For this type of switch solenoid valve commonly seen on the market, the rear yoke is fixedly mounted on the cover plate and its position cannot be adjusted forward and backward, and the cover plate is fixedly mounted on the housing and its position cannot be adjusted forward and backward, so it is impossible to adjust the tension of the spring by adjusting the front and rear position of the rear yoke, resulting in the inability to adjust the opening of the solenoid valve, and the parameters of the coil assembly are fixed, so it is difficult to ensure the consistency of the opening current of each factory switch solenoid valve. Utility Model Content
[0003] The utility model aims to provide a switch electromagnetic valve with a rear yoke iron position adjustable forward and backward.
[0004] To this end, the utility model adopts the following technical solutions:
[0005] A switch solenoid valve with adjustable rear yoke comprises a shell, in which a valve body, a front yoke, a coil assembly and a moving iron core are arranged in sequence from front to back; the valve body is thin at the front and thick at the back, and the thick rear part is stuck in the front opening of the shell, while the thin front part is exposed in front of the shell, and a cover plate closing its rear opening is fixedly arranged at the rear end of the shell, and the cover plate squeezes and fixes the coil assembly, the front yoke and the valve body in the shell; an oil inlet hole connected to its front end face is axially arranged in the front thin part of the valve body, a rear-opening oil drain chamber is arranged in the rear thick part, and an oil control chamber connected to the oil inlet hole and the oil drain chamber is also arranged inside, an oil control port is arranged on the side wall of the oil control chamber, and an oil drain port is arranged on the side wall of the oil drain chamber; a valve seat is arranged inside the oil control chamber, and the front end of the valve seat is seal-inserted into the rear opening of the oil inlet hole, a rear-opening valve chamber is arranged inside the rear, and an inner A front valve hole connecting the oil inlet hole and the valve chamber is provided at the front, an oil hole connecting the oil control chamber is provided on the side wall of the valve chamber, a valve cover closing its rear opening is fixedly provided at the rear end, a rear valve hole facing the front and rear of the front valve hole is provided on the valve cover, a valve ball is movably provided inside the valve chamber, the valve ball moves back and forth to alternately open and close the front valve hole and the rear valve hole; a moving iron core is movably provided inside the front yoke iron and the coil assembly and in the oil leakage chamber, a pin for passing through the rear valve hole and supporting the valve ball is fixedly provided at its front end; a rear yoke iron is provided on the cover plate, a spring is provided between the rear yoke iron and the moving iron core, the spring elastically supports the moving iron core forward to drive the pin to push the valve ball to close the front valve hole and open the rear valve hole; a screw hole is provided on the cover plate, the rear yoke iron is screwed and fixed in the screw hole by a thread provided on its outer wall.
[0006] As a preferred solution, the rear yoke iron is in the shape of a T-shaped screw, and its rod body is screwed into the screw hole from the outside to the inside so that its rod head is exposed.
[0007] As a preferred solution, a screwdriver slot is provided at the top of the rod head of the rear yoke.
[0008] As a preferred solution, the front end of the spring is arranged in a front spring hole arranged on the rear end surface of the moving iron core, and the rear end is arranged in a rear spring hole arranged on the front end surface of the rear yoke iron.
[0009] As a preferred solution, an exhaust pressure relief hole communicating with the rear spring hole and its rear end surface is also provided in the rear yoke iron.
[0010] As a preferred solution, an elastic gasket is sleeved on the back yoke between the cover plate and the coil assembly.
[0011] The rear yoke of the utility model is threadedly connected to the cover plate, and its front and rear positions are online adjustable, thereby realizing online adjustment of the opening current of the switch solenoid valve, which is beneficial to ensuring the consistency of the opening current of the factory switch solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model. DETAILED DESCRIPTION
[0013] The present invention is described below in conjunction with the accompanying drawings and specific embodiments.
[0014] like Figure 1 As shown, a switch solenoid valve with an adjustable rear yoke comprises a housing 1, in which a valve body 2, a front yoke 3 and a coil assembly 4 are arranged in sequence from front to back.
[0015] The valve body 2 is thin at the front and thick at the back, with the thick rear part stuck inside the front opening of the shell body 1 and the thin front part exposed in front of the shell body 1. A cover plate 6 is fixed to the rear end of the shell body 1 to close its rear opening. The cover plate 6 squeezes and fixes the coil assembly 4, the front yoke 3 and the valve body 2 inside the shell body 1. An elastic gasket 13 is also sleeved on the back yoke 11 between the cover plate 6 and the coil assembly 4 to press the coil assembly 4, the front yoke 3 and the valve body 2 into the shell body 1.
[0016] An oil inlet hole 2.1 connected to the front end face is axially arranged in the front thin part of the valve body 2, a rear-opening oil drain chamber 2.3 is arranged in the rear thick part, and an oil control chamber 2.2 connected to the oil inlet hole 2.1 and the oil drain chamber 2.3 is also arranged inside, an oil control port 2.21 is arranged on the side wall of the oil control chamber 2.2, and an oil drain port 2.31 is arranged on the side wall of the oil drain chamber 2.3.
[0017] A valve seat 7 is provided inside the oil control cavity 2.2, the front end of which is sealed and plugged into the rear end of the oil inlet hole 2.1, a rear-opening valve chamber 7.2 is provided at the rear, and a front valve hole 7.1 communicating with the oil inlet hole 2.1 and the valve chamber 7.2 is provided at the front.
[0018] The side wall of the valve chamber 7.2 is provided with an oil hole 7.21 communicating with the oil control cavity 2.2, and a valve cover 8 is fixedly provided at the rear end to close the rear opening thereof.
[0019] The valve cover 8 is provided with a rear valve hole 8.1 which is directly opposite to the front valve hole 7.1 in front and back, and a valve ball 9 is movably provided inside the valve chamber 7.2.
[0020] The valve ball 9 moves forward and backward to alternately open and close the front valve hole 7.1 and the rear valve hole 8.1. When the valve ball 9 opens the front valve hole 7.1 and closes the rear valve hole 8.1, the oil inlet hole 2.1 and the oil through hole 7.21 can be connected, and then the oil inlet hole 2.1 and the oil control port 2.21 can be connected. When the valve ball 9 closes the front valve hole 7.1 and opens the rear valve hole 8.1, the oil drain port 2.3 and the oil through hole 7.21 can be connected, and then the oil drain port 2.3 and the oil control port 2.21 can be connected.
[0021] A moving iron core 5 is provided inside the front yoke 3 and the coil assembly 4 and in the oil drain chamber 2.3 so as to move forward and backward. A push pin 10 for passing through the rear valve hole 8.1 and supporting the push valve ball 9 is fixedly provided at the front end of the moving iron core 5.
[0022] A rear yoke 11 is provided on the cover plate 6, and a spring 12 is provided between the rear yoke 11 and the moving iron core 5. The front end of the spring 12 is arranged in the front spring hole provided on the rear end surface of the moving iron core 5, and the rear end is arranged in the rear spring hole provided on the front end surface of the rear yoke 11, so as to elastically support the moving iron core 5 forward to drive the ejector pin 10 to push the valve ball 9 to close the front valve hole 7.1 and open the rear valve hole 8.1.
[0023] The cover plate 6 is provided with a screw hole 6.1 which is directly opposite to the front and rear of the moving iron core 5. A rear yoke 11 is provided in the screw hole 6.1. The rear yoke 11 is in the shape of a T-shaped screw rod, and its rod body is screwed into the screw hole 6.1 from the outside to the inside so that its rod head is exposed. A screwdriver slot 11.1 is provided at the top of the rod head. The rear yoke 11 is also provided with an exhaust pressure relief hole 11.2 which is connected to the rear spring hole and its rear end surface.
Claims
1. A switch solenoid valve with an adjustable rear yoke, comprising a housing (1), wherein a valve body (2), a front yoke (3), a coil assembly (4) and a moving iron core (5) are arranged in sequence from front to back in the housing (1); the valve body (2) is thin at the front and thick at the rear, and the thick rear portion is stuck inside the front opening of the housing (1), and the thin front portion is exposed in front of the housing (1); a cover plate (6) is fixedly provided at the rear end of the housing (1) to close the rear opening thereof, and the cover plate (6) squeezes and fixes the coil assembly (4), the front yoke (3) and the valve body (2) inside the housing (1); the thin front portion of the valve body (2) is fixedly provided with a cover plate (6) to close the rear opening thereof; the cover plate (6) squeezes and fixes the coil assembly (4), the front yoke (3) and the valve body (2) inside the housing (1); An oil inlet hole (2.1) communicating with the front end face thereof is axially arranged in the inner part, a rear-opening oil drain chamber (2.3) is arranged in the rear thick part, and an oil control chamber (2.2) communicating with the oil inlet hole (2.1) and the oil drain chamber (2.3) is arranged inside the inner part, an oil control port (2.21) is arranged on the side wall of the oil control chamber (2.2), and an oil drain port (2.31) is arranged on the side wall of the oil drain chamber (2.3); a valve seat (7) is arranged inside the oil control chamber (2.2), the front end of the valve seat (7) is sealingly plugged into the rear port of the oil inlet hole (2.1), and a rear-opening valve chamber (7) is arranged in the inner rear part. .2), a front valve hole (7.1) communicating with the oil inlet hole (2.1) and the valve chamber (7.2) is provided in the inner front part, an oil through hole (7.21) communicating with the oil control cavity (2.2) is provided in the side wall of the valve chamber (7.2), a valve cover (8) is fixedly provided at the rear end to close the rear opening, a rear valve hole (8.1) facing the front and rear of the front valve hole (7.1) is provided on the valve cover (8), a valve ball (9) is movably provided inside the valve chamber (7.2), and the valve ball (9) moves forward and backward to alternately open and close the front valve hole (7.1) and the rear valve hole (8.1); a movable iron The core (5) is arranged inside the front yoke (3) and the coil assembly (4) and the oil drain chamber (2.3) so as to move forward and backward, and a pin (10) is fixedly arranged at its front end for passing through the rear valve hole (8.1) and supporting the valve ball (9); a rear yoke (11) is arranged on the cover plate (6), and a spring (12) is arranged between the rear yoke (11) and the moving iron core (5), and the spring (12) elastically supports the moving iron core (5) forward to drive the pin (10) to push the valve ball (9) to close the front valve hole (7.1) and open the rear valve hole (8.1); the characteristics are: The cover plate (6) is provided with a screw hole (6.1), and the rear yoke iron (11) is screwed and fixed in the screw hole (6.1) through a thread provided on its outer wall.
2. The switch solenoid valve with adjustable back yoke according to claim 1, characterized in that: The rear yoke iron (11) is in the shape of a T-shaped screw rod, and its rod body is screwed into the screw hole (6.1) from the outside to the inside so that its rod head is exposed.
3. The switch solenoid valve with adjustable back yoke according to claim 2, characterized in that: The top end of the rod head of the rear yoke iron (11) is provided with a screwdriver groove (11.1).
4. The switch solenoid valve with adjustable back yoke according to claim 1, characterized in that: The front end of the spring (12) is arranged in a front spring hole arranged on the rear end surface of the moving iron core (5), and the rear end is arranged in a rear spring hole arranged on the front end surface of the rear yoke iron (11).
5. The switch solenoid valve with adjustable back yoke according to claim 4, characterized in that: An exhaust pressure relief hole (11.2) communicating with the rear spring hole and the rear end surface thereof is also provided in the rear yoke iron (11).
6. A switch solenoid valve with adjustable back yoke according to any one of claims 1 to 5, characterized in that: An elastic gasket (13) is sleeved on the rear yoke (11) between the cover plate (6) and the coil assembly (4).