Two-position two-way miniature electromagnetic valve

Abstract

The utility model relates to a two-position two-way miniature electromagnetic valve which comprises a valve body and an electromagnetic assembly. The electromagnetic assembly comprises a shell, a coil framework, a static iron core, a movable iron core, a coil, a fixing plate, a spring seat, a reset spring, a fixing seat matched with the spring seat in a linkage mode, a valve element arranged on the fixing seat in a linkage mode and matched with the valve body and a spring arranged between the valve element and the movable iron core, and the valve body is provided with an air inlet and an air outlet. The valve body is provided with an air inlet and an air outlet, the air inlet is communicated with a valve cavity of the valve body, the valve cavity is internally provided with an air vent which is matched with the valve element and communicated with the air outlet, the valve body is provided with a plug-in terminal, and the valve body is internally provided with a contact pin connected between the plug-in terminal and the coil. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly and good protection performance.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic components, and particularly relates to a two-way two-port micro solenoid valve. Background Art

[0002] A solenoid valve is an industrial device controlled by electricity magnetism. It is a basic automation component for controlling fluids and belongs to an actuator, not limited to hydraulic and pneumatic applications. It is used in industrial control systems to adjust parameters such as the direction, flow rate, speed, and other parameters of the medium. The solenoid valve can cooperate with different circuits to achieve the expected control, and both the control accuracy and flexibility can be guaranteed. The existing structure of the two-way two-port solenoid valve cannot be integrated modularly, making it difficult to achieve modular assembly. The assembly is relatively cumbersome, and the two-way two-port solenoid valve also has defects such as a complex structure, unreliable performance, and poor protection performance. Summary of the Invention

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a two-way two-port micro solenoid valve with a simple structure, stable and reliable performance, convenient assembly, and good protection performance.

[0004] To achieve the above purpose, the utility model adopts a two-way two-port micro solenoid valve, which includes a valve body and an electromagnetic component arranged on the valve body. The electromagnetic component includes a housing arranged on the valve body, a coil bobbin arranged in the housing, a static iron core arranged in the coil bobbin, a moving iron core arranged in the coil bobbin and cooperating with the static iron core, a coil arranged on the coil bobbin, a fixing plate arranged on the coil bobbin, a spring seat linked to the moving iron core, a return spring between the spring seat and the fixing plate, a fixed seat linked and cooperating with the spring seat, a valve core linked to the fixed seat and cooperating with the valve body, and a spring arranged between the valve core and the moving iron core. The valve body is respectively provided with an air inlet and an air outlet. The air inlet is communicated with the valve cavity of the valve body. A vent hole cooperating with the valve core and communicated with the air outlet is arranged in the valve cavity. A plug-in terminal is arranged on the valve body, and a pin connecting the plug-in terminal and the coil is arranged in the valve body.

[0005] The beneficial effects of the above structure are: the electromagnetic component adopts a modular structural design, which is conducive to the modular assembly of the electromagnetic component and the valve body, and the assembly efficiency is higher. And the valve body is provided with plug-in terminals, which can realize the plug-in wiring of the electromagnetic valve, and the wiring is more convenient. The valve core linkage is set on the fixed seat, which can ensure the reliable operation of the valve core in the valve body, and the working reliability is higher. During operation, compressed air (up to 1.0MPa) is introduced into the air inlet, and after the coil is energized (DC24V), the electromagnetic component generates a magnetic field, and the moving iron core and the fixed seat are displaced toward the static iron core. At this time, the valve core and the vent are opened, and the air flow flows from the air inlet to the outlet. The coil loses power, the magnetic field disappears, and the moving iron core and the fixed seat are pushed to the vent by the reset spring. At this time, the vent is closed to cut off the air flow. Therefore, the two-position two-way micro solenoid valve has the advantages of simple structure, stable and reliable performance, convenient assembly, and good protection performance.

[0006] In particular, the valve body is provided with a sealing groove matched with the shell, and the sealing groove is provided with a sealant matched with the shell. The sealant is provided between the valve body and the shell, thereby ensuring the sealing performance of the valve body and the electromagnetic component, and the protection performance is better.

[0007] In particular, the fixing seat is provided with a positioning groove matched with the valve core, the valve core is engaged in the positioning groove, and a snap fit is formed between the valve core and the fixing seat. The valve core and the fixing seat are assembled in a snap fit manner, which makes assembly more convenient.

[0008] In particular, a filter cotton is arranged in the air inlet, which can filter out impurities in the gas, thereby facilitating the improvement of the working reliability of the two-position two-way micro solenoid valve.

[0009] In particular, the plug hole of the plug terminal is provided with a contact convex point matched with the plug pin, and the plug pin is plugged into the plug hole and abuts against the contact convex point. The contact convex point can increase the contact pressure between the plug terminal and the plug pin, and can ensure that the contact between the plug terminal and the plug pin is more reliable.

[0010] In particular, sealing rings are respectively arranged between the coil frame and the housing, and between the coil frame and the fixing plate. The sealing rings can enhance the sealing performance of the electromagnetic assembly, which is beneficial to improving the protection performance of the two-position two-way micro electromagnetic valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a stereogram of an embodiment of the utility model.

[0012] Figure 2 This is a cross-sectional view of an embodiment of the utility model. DETAILED DESCRIPTION

[0013] like Figure 1 , 2As shown in the figure, an embodiment of the utility model is a two-way two-port micro solenoid valve, which includes a valve body 10 and an electromagnetic component 20 arranged on the valve body 10. The electromagnetic component 20 includes a housing 21 arranged on the valve body 10, a coil bobbin 22 arranged in the housing 21, a static iron core 23 arranged in the coil bobbin 22, a moving iron core 24 arranged in the coil bobbin 22 and cooperating with the static iron core 23, a coil 25 arranged on the coil bobbin 22, a fixing plate 26 arranged on the coil bobbin 22, a spring seat 27 linked to the moving iron core 24, a return spring 28 between the spring seat 27 and the fixing plate 26, a fixing seat 29 linked and cooperating with the spring seat 27, a valve core 11 linked to the fixing seat 29 and cooperating with the valve body 10, and a spring 12 arranged between the valve core 11 and the moving iron core 24. An air inlet 101 and an air outlet 102 are respectively arranged on the valve body 10. The air inlet 101 is communicated with a valve cavity 100 of the valve body 10. An air vent 103 which cooperates with the valve core 11 and is communicated with the air outlet 102 is arranged in the valve cavity 100. A plug-in terminal 13 is arranged on the valve body 10. A pin 14 connected between the plug-in terminal 13 and the coil 25 is arranged in the valve body 10.

[0014] As Figure 2 shown, a sealing groove 104 cooperating with the housing 21 is arranged on the valve body 10, and a sealing glue 15 which is hermetically fitted with the housing 21 is arranged in the sealing groove 104. A sealing glue is arranged between the valve body and the housing, so as to ensure the sealing performance between the valve body and the electromagnetic component and have better protection performance. The fixing seat 29 is provided with a positioning groove 291 cooperating with the valve core 11, and the valve core 11 is clamped in the positioning groove 291, forming a clamping fit between the valve core 11 and the fixing seat 29. The valve core and the fixing seat are assembled by a clamping fit method, and the assembly is more convenient. A filter cotton 16 is arranged in the air inlet 101. The filter cotton can filter out impurities in the gas, which is beneficial to improving the working reliability of the two-way two-port micro solenoid valve. A contact bump 132 cooperating with the pin 14 is arranged in a plug-in hole 131 of the plug-in terminal 13, and the pin 14 is inserted into the plug-in hole 131 and abuts against the contact bump 132. The contact bump can increase the contact pressure between the plug-in terminal and the pin, and ensure more reliable contact between the plug-in terminal and the pin. Sealing rings 17 are respectively arranged between the coil bobbin 22 and the housing 21 and between the coil bobbin 22 and the fixing plate 26. The sealing rings can enhance the sealing performance of the electromagnetic component and are beneficial to improving the protection performance of the two-way two-port micro solenoid valve.

[0015] The electromagnetic assembly adopts a modular structure design, which is conducive to the modular assembly of the electromagnetic assembly and the valve body, and the assembly efficiency is higher. In addition, the valve body is provided with plug-in terminals, which can realize the plug-in wiring of the solenoid valve, and the wiring is more convenient. The valve core linkage is set on the fixed seat, which can ensure the reliable movement of the valve core in the valve body, and the working reliability is higher. During operation, compressed air (up to 1.0MPa) is introduced into the air inlet, and after the coil is energized (DC24V), the electromagnetic assembly generates a magnetic field, and the moving iron core and the fixed seat are displaced toward the static iron core. At this time, the valve core and the vent are opened, and the air flow flows from the air inlet to the outlet. The coil loses power, the magnetic field disappears, and the moving iron core and the fixed seat are pushed to the vent by the reset spring. At this time, the vent is closed to cut off the air flow. Therefore, the two-position two-way micro solenoid valve has the advantages of simple structure, stable and reliable performance, convenient assembly, and good protection performance.

Claims

1. A two-position two-way micro solenoid valve, comprising a valve body and an electromagnetic assembly arranged on the valve body, characterized in that: The electromagnetic assembly includes a shell arranged on the valve body, a coil frame arranged in the shell, a static iron core arranged in the coil frame, a moving iron core arranged in the coil frame and matched with the static iron core, a coil arranged on the coil frame, a fixed plate arranged on the coil frame, a spring seat linked to the moving iron core, a reset spring between the spring seat and the fixed plate, a fixed seat linked to the spring seat, a valve core linked to the fixed seat and matched with the valve body, and a spring arranged between the valve core and the moving iron core. The valve body is respectively provided with an air inlet and an air outlet, the air inlet is connected with the valve cavity of the valve body, the valve cavity is provided with an air vent matched with the valve core and connected with the air outlet, the valve body is provided with a plug-in terminal, and the valve body is provided with a pin connected between the plug-in terminal and the coil.

2. The two-position two-way micro solenoid valve according to claim 1, characterized in that: The valve body is provided with a sealing groove matched with the shell, and the sealing groove is provided with a sealing glue which is sealed and matched with the shell.

3. The two-position two-way micro solenoid valve according to claim 1 or 2, characterized in that: The fixing seat is provided with a positioning groove matched with the valve core, and the valve core is clamped in the positioning groove to form a clamping fit between the valve core and the fixing seat.

4. The two-position two-way micro solenoid valve according to claim 1 or 2, characterized in that: Filter cotton is arranged in the air inlet.

5. The two-position two-way micro solenoid valve according to claim 1 or 2, characterized in that: A contact convex point matched with the plug pin is arranged in the plug hole of the plug terminal, and the plug pin is plugged into the plug hole and abuts against the contact convex point.

6. The two-position two-way micro solenoid valve according to claim 1 or 2, characterized in that: Sealing rings are respectively arranged between the coil frame and the shell, and between the coil frame and the fixing plate.

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