Two-position three-way electromagnetic valve

Abstract

The utility model is applicable to the technical field of electromagnetic valves, and provides a two-position three-way electromagnetic valve, which comprises an electromagnetic component, a valve body component, a valve body component, a valve body component and a control component, the valve body assembly comprises a valve body, a limiting piece and a valve plug assembly, and an air inlet, an air outlet, an exhaust port and a mounting groove are formed in a cavity structure in the valve body; the limiting piece is embedded in the mounting groove; the valve plug assembly is installed on the valve body. According to the utility model, the mounting groove is arranged in the inner cavity of the valve body of the valve body assembly, the mounting groove is positioned between the exhaust port at one end of the exhaust channel and the air inlet at one end of the air inlet channel, and the exhaust hole is arranged on the limiting piece and is communicated with the exhaust port; after the electromagnetic assembly is powered off, the valve plug assembly resets, so that the exhaust port and the air outlet are communicated through the exhaust hole of the limiting piece, the situation that the back pressure of an inner cavity of the valve body is too high due to direct exhaust is avoided, and the air path stroke is short and air resistance becomes small due to reduction of inner channels is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic valves, and in particular relates to a two-position three-way electromagnetic valve. Background Art

[0002] Solenoid valves are very common in many industrial and commercial applications due to their simple structure and efficient functions. The following are some of the main application areas: automation control, pneumatic systems, medical equipment, food processing, chemical industry, water treatment, petrochemical industry, air conditioning system, metallurgical industry, etc. The advantages of solenoid valves include simple control, high reliability, simple maintenance and low cost.

[0003] The working principle of the solenoid valve is to use the electromagnetic force of the electromagnetic coil to drive the valve core to move, thereby controlling the on / off or flow direction of the airflow and realizing the control of the pneumatic system. The common structural components include: valve body, valve core, coil, spring, seal, interface, exhaust port, electrical connection, etc. Among them, the two-position three-way solenoid valve is more common and has many different working modes such as: one-in and two-out, two-in and one-out, etc.

[0004] In the prior art, the exhaust port of most two-position three-way solenoid valves is directly opened on the valve body and connected to the air outlet or connected to the air outlet through an internal channel. The direct opening on the valve body can directly and quickly exhaust the air. Direct exhaust will cause the back pressure of the system to be too high, affecting the service life of other pneumatic components. When the exhaust port is connected to the air outlet through an internal channel, the problem of excessive back pressure caused by direct and rapid exhaust can be avoided, but the internal channel will increase the resistance to fluid flow and increase the complexity of gas flow. Utility Model Content

[0005] The purpose of the embodiment of the utility model is to provide a two-position three-way solenoid valve, aiming to solve the problem that the exhaust port of most two-position three-way solenoid valves is directly opened on the valve body and connected to the air outlet or connected to the air outlet through an internal channel. The direct opening on the valve body can directly and quickly exhaust the air, but the sealing of the exhaust port is poor and direct exhaust will cause the back pressure of the system to be too high, affecting the service life of other pneumatic components; when the exhaust port is connected to the air outlet through an internal channel, the problem of excessive back pressure caused by direct and rapid exhaust can be avoided, but the internal channel will increase the resistance to fluid flow and increase the complexity of gas flow.

[0006] The utility model is implemented in this way: a two-position three-way solenoid valve, the two-position three-way solenoid valve comprising:

[0007] An electromagnetic assembly, wherein the electromagnetic assembly is mounted on the valve body assembly;

[0008] The valve body assembly includes a valve body, a stopper and a valve plug assembly. The internal cavity structure of the valve body is provided with an air inlet, an air outlet, an exhaust port and a mounting groove. When the power is on, the exhaust port is closed, and the air inlet is connected with the air outlet so that the gas enters the solenoid valve from the air inlet and then is discharged from the air outlet. When the power is off, the air inlet is closed, and the air outlet is connected with the exhaust port so that the excess gas inside the solenoid valve is discharged to reduce the pressure inside the solenoid valve. The mounting groove is provided on the side of the inner wall of the valve body and is located between the air inlet and the exhaust port.

[0009] The limiting member is embedded in the mounting groove, and the limiting member is provided with an exhaust hole, and the exhaust hole is connected to the exhaust port; the valve plug assembly is installed on the valve body, and the valve plug assembly is used to control the opening or closing of the air port.

[0010] Preferably, the electromagnetic assembly includes a shell and a coil component, a cavity structure is formed inside the shell, an interface is arranged on the top, the cavity structure is used to install the coil component, the interface is used to connect to an external power supply, a connecting groove is arranged on the bottom surface of the shell, and the connecting groove is used to connect to the valve body; the coil component is installed in the internal structure of the shell through a positioning member, and the coil component is connected to an external power supply to facilitate control of the movement of the valve plug assembly.

[0011] Preferably, a multi-channel cavity structure is formed inside the valve body, and a mounting protrusion is arranged on the top of the valve body, and the mounting protrusion is embedded in the connecting groove on the bottom surface of the shell to facilitate the connection of the electromagnetic assembly to the valve body, and a first cavity is arranged at the center of the valve body, and the first cavity is used to install the valve plug assembly, and one side of the first cavity is arranged to be connected with the air outlet, and the other side is arranged to be connected with the air inlet and the air outlet, and the air inlet and the air outlet are arranged side by side.

[0012] Preferably, the mounting groove is arranged on the inner wall surface of the first cavity and is located between the air inlet and the air outlet, and the mounting groove is fixedly connected to the limiter through a fixing member, and the fixing member is used to prevent air leakage between the air inlet and the air outlet.

[0013] Preferably, one side of the limiter is connected to the fixing member and installed on the mounting groove, and the other side is higher than the inner wall surface of the first cavity; one port of the exhaust hole is located on the top surface of the limiter and connected to the exhaust port, and the other port of the exhaust hole is connected to the first cavity.

[0014] Preferably, the valve plug assembly is used to control the fluid flow direction of the first cavity in the valve body; the valve plug assembly includes a valve plug head, a tightening spring and a push rod, the valve plug head is installed at the end of the push rod and is located between the limit piece and the first cavity, the valve plug head is provided with a second cavity, and the second cavity is used to install the push rod; the tightening spring is installed on the top of the push rod and is connected to the electromagnetic assembly, the push rod is installed in the first cavity, and a fixing groove is provided on the top surface of the push rod, and the fixing groove is used to install the tightening spring.

[0015] The embodiment of the utility model provides a two-position three-way solenoid valve. The utility model provides an installation groove in the internal cavity of the valve body of the valve body assembly. The installation groove is located between the exhaust port at one end of the exhaust channel and the air inlet at one end of the air inlet channel, and a limit piece is installed in the installation groove. The exhaust hole is arranged on the limit piece, and the exhaust hole is connected with the exhaust port. When the electromagnetic assembly is powered off, the valve plug assembly is reset so that the exhaust port and the air outlet are connected through the exhaust hole of the limit piece, thereby avoiding direct exhaust that causes excessive back pressure in the internal cavity of the valve body and reducing the internal channel to shorten the air path and reduce the air resistance, thereby solving the problem of excessive back pressure due to direct and rapid exhaust. However, the internal channel will increase the resistance to fluid flow and increase the complexity of gas flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural diagram of a two-position three-way solenoid valve provided in an embodiment of the utility model;

[0017] Figure 2 A sectional view of a front view of a two-position three-way solenoid valve provided in an embodiment of the utility model;

[0018] Figure 3 A partial schematic diagram of a cross-sectional view of a two-position three-way solenoid valve provided in an embodiment of the utility model.

[0019] In the accompanying drawings: 1, electromagnetic assembly; 11, shell; 111, connecting groove; 12, coil member; 2, valve body assembly; 21, valve body; 211, air inlet; 212, air outlet; 213, exhaust port; 214, first cavity; 22, limit member; 221, exhaust hole; 222, fixing member; 23, valve plug assembly; 231, valve plug head; 232, push rod; 233, tightening spring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0022] like Figure 1-3 As shown, it is a structural diagram of a two-position three-way solenoid valve provided by an embodiment of the utility model, comprising: an electromagnetic component 1, the electromagnetic component 1 is installed on a valve body component 2;

[0023] The valve body assembly 2 comprises a valve body 21, a limiter 22 and a valve plug assembly 23. The internal cavity structure of the valve body 21 is provided with an air inlet 211, an air outlet 212, an exhaust port 213 and a mounting groove. When power is on, the exhaust port 213 is closed, and the air inlet 211 is connected with the air outlet 212 so that the gas enters the solenoid valve from the air inlet 211 and is discharged from the air outlet 212. When power is off, the air inlet 211 is closed, and the air outlet 212 is connected with the exhaust port 213 so that the excess gas inside the solenoid valve is discharged to reduce the pressure inside the solenoid valve. The mounting groove is provided on the inner wall side of the valve body 21 and is located between the air inlet 211 and the exhaust port 213; the limiter 22 is embedded in the mounting groove, and the limiter 22 is provided with an exhaust hole 221, and the exhaust hole 221 is connected with the exhaust port 213; the valve plug assembly 23 is installed on the valve body 21, and the valve plug assembly 23 is used to control the opening or closing of the air port.

[0024] In the embodiment of the utility model, preferably, a two-position three-way solenoid valve can be a one-in-two-out working mode, and is provided with an air inlet 211, an air outlet 212 and an exhaust port 213. The solenoid valve body can be composed of an electromagnetic component 1 and a valve body component 2. The electromagnetic component 1 is installed in the valve body component 2 to drive the valve plug component 23 in the valve body component 2 to move so as to change the open or closed state. The valve body component 2 is composed of a valve body 21, a limiter 22 and a valve plug component 23, wherein the valve body 21 is provided with three cavity channels and the ports connected to the cavity channel at the center position are the air inlet 211, the air outlet 212 and the exhaust port 213, respectively. The exhaust port 213 and the air inlet 211 are arranged on an inner wall surface of the cavity channel at the center position, and the air outlet 212 is arranged on the other inner wall surface. A mounting groove is arranged on the inner wall surface between the exhaust port 213 and the air inlet 211, and the mounting groove is mainly used for The limit piece 22 is installed. The limit piece 22 is arranged on the inner wall surface of the valve body 21 and the side surface of the limit piece 22 is higher than the inner wall surface so as to limit the movement stroke of the valve plug assembly 23 in the valve body 21. An exhaust hole 221 is arranged on the limit piece 22. The exhaust hole 221 is connected with the exhaust port 213 so that when exhausting, the fluid flows out of the exhaust port 213 from the exhaust hole 221. The exhaust hole 221 on the limit piece 22 causes the fluid to flow out of the exhaust port 213, which can reduce the high back pressure caused by exhausting directly from the exhaust port 213 on the valve body during the exhaust process, thereby affecting the service life of the pneumatic components, shortening the air path stroke of the internal channel designed in the valve body, reducing the air resistance of the air flow, shortening the air path stroke, and designing a channel inside the valve body is difficult to achieve in the actual processing steps, and needs to be designed inside it, but the step of setting a groove inside the valve body to directly install the limit piece 22 inside the valve body through the fixing piece 222 is more convenient.

[0025] In one embodiment of the utility model, the utility model provides an installation groove in the internal cavity of the valve body 21 of the valve body assembly 2, and the installation groove is located between the exhaust port 213 at one end of the exhaust channel and the air inlet 211 at one end of the air inlet channel, and a limit member 22 is installed in the installation groove, and an exhaust hole 221 is provided on the limit member 22, and the exhaust hole 221 is connected with the exhaust port 213. When the electromagnetic assembly 1 is powered off, the valve plug assembly 23 is reset so that the exhaust port 213 is connected with the air outlet 212 through the exhaust hole 221 of the limit member 22, thereby avoiding direct exhaust causing excessive back pressure in the internal cavity of the valve body 21 and reducing the internal channel to shorten the air path and reduce the air resistance, thereby solving the problem of excessive back pressure caused by direct and rapid exhaust, but the internal channel will increase the resistance to fluid flow and increase the complexity of gas flow.

[0026] like Figure 1-3 As shown, as a preferred embodiment of the utility model, the electromagnetic component 1 includes a shell 11 and a coil component 12, a cavity structure is formed inside the shell 11, an interface is arranged on the top, the cavity structure is used to install the coil component 12, the interface is used to connect to an external power supply, a connecting groove 111 is arranged on the bottom surface of the shell 11, and the connecting groove 111 is used to connect to the valve body 21; the coil component 12 is installed in the internal structure of the shell 11 through a positioning member, and the coil component 12 is connected to an external power supply to facilitate the control of the movement of the valve plug assembly 23.

[0027] In an embodiment of the utility model, preferably, the electromagnetic component 1 is mainly composed of a shell 11 and a coil component 12. The shell 11 is an irregular semi-closed shell 11 and is provided with a cavity so that the coil component 12 can be installed in the internal cavity of the shell 11. The coil component 12 installed inside the shell 11 is connected to an external power supply through an interface so that the coil component 12 generates magnetic force and controls the movement of the valve plug assembly 23 to open or close the internal valve body 21. A plurality of connecting grooves 111 connected to the top surface of the valve body 21 of the valve body assembly 2 are provided on the bottom surface of the shell 11.

[0028] like Figure 1-3 As shown, as a preferred embodiment of the utility model, a multi-channel cavity structure is formed inside the valve body 21, and a mounting protrusion is arranged on the top of the valve body 21, and the mounting protrusion is embedded in the connecting groove 111 on the bottom surface of the shell 11 to facilitate the connection of the electromagnetic component 1 to the valve body 21, and a first cavity 214 is arranged at the center of the valve body 21, and the first cavity 214 is used to install the valve plug assembly 23, and one side of the first cavity 214 is arranged to be connected with the air outlet 212, and the other side is arranged to be connected with the air inlet 211 and the air outlet 212, and the air inlet 211 and the air outlet 212 are arranged side by side.

[0029] In the embodiment of the present utility model, preferably, the valve body main body 21 can be an irregular semi-closed housing 11 provided with a multi-channel cavity to facilitate connection with other pneumatic components. A plurality of mounting bumps are provided on the top surface of the valve body main body 21, and the mounting bumps can be embedded in the connection grooves 111 on the bottom surface of the housing 11 of the electromagnetic assembly 1. One port of the first cavity 214 is located on the top surface of the valve body main body 21, and the first cavity 214 is used for installing the valve plug assembly 23. On both sides of the inner wall surface of the first cavity 214, there are respectively an exhaust port 213, an air outlet 212, and an air inlet 211 from top to bottom. Among them, the air outlet 212 is located on one inner side surface, and the exhaust port 213 and the air inlet 211 are located on the other inner side surface.

[0030] As Figure 1-3 shown, as a preferred embodiment of the present utility model, the mounting groove is provided on the inner wall surface of the first cavity 214 and is located between the air inlet 211 and the air outlet 212. The mounting groove is fixedly connected to the limiting member 22 through the fixing member 222, and the fixing member 222 is used to prevent air leakage between the air inlet 211 and the air outlet 212.

[0031] In the embodiment of the present utility model, preferably, the mounting groove can be located on the other inner side surface of the first cavity 214 and is set as a U-shaped groove. The limiting member 22 is mounted on the mounting groove through the gelatinous fixing member 222. The fixing member 222 not only fixes the limiting member 22 but also can buffer and dampen vibrations and prevent air leakage between the air inlet 211 and the air outlet 212 from affecting the use effect.

[0032] As Figure 1-3 shown, as a preferred embodiment of the present utility model, one side surface of the limiting member 22 is connected to the fixing member 222 and is mounted on the mounting groove, and the other side surface is higher than the inner wall surface of the first cavity 214; one port of the exhaust hole 221 is located on the top surface of the limiting member 22 and is communicated with the exhaust port 213, and the other port of the exhaust hole 221 is communicated with the first cavity 214.

[0033] In the embodiment of the present utility model, preferably, the limiting member 22 can be provided with an annular groove for mounting the fixing member 222 on its outer side surface to facilitate mounting the limiting member 22 on the mounting groove. One port of the exhaust hole 221 on the limiting member 22 is located below the exhaust port 213 and is communicated with it, and the other port is communicated with the first cavity 214 to facilitate exhaust inside the valve body main body 21.

[0034] As Figure 1-3As shown, as a preferred embodiment of the utility model, the valve plug assembly 23 is used to control the fluid flow direction of the first cavity 214 in the valve body 21; the valve plug assembly 23 includes a valve plug head 231, a tightening spring 233 and a push rod 232, the valve plug head 231 is installed at the end of the push rod 232 and is located between the limit member 22 and the first cavity 214, the valve plug head 231 is provided with a second cavity, and the second cavity is used to install the push rod 232; the tightening spring 233 is installed on the top of the push rod 232 and is connected to the electromagnetic assembly 1, the push rod 232 is installed in the first cavity 214, and a fixing groove is provided on the top surface of the push rod 232, and the fixing groove is used to install the tightening spring 233.

[0035] In an embodiment of the utility model, preferably, the valve plug assembly 23 is mainly composed of a valve plug head 231, a tightening spring 233 and a push rod 232. A second cavity for installing the push rod 232 is provided on the valve plug head 231. The tightening spring 233 is installed on the top of the push rod 232 and is connected to the shell 11 on the electromagnetic assembly 1. The push rod 232 is installed on the top of the valve plug head 231 so that the valve plug head 231 can be driven by the push rod 232 to move up and down in the first cavity 214 to realize the opening and closing between the air inlet 211, the air outlet 212 and the exhaust port 213.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A two-position three-way solenoid valve, characterized in that: The two-position three-way solenoid valve comprises: An electromagnetic assembly, wherein the electromagnetic assembly is mounted on the valve body assembly; The valve body assembly includes a valve body, a stopper and a valve plug assembly. The internal cavity structure of the valve body is provided with an air inlet, an air outlet, an exhaust port and a mounting groove. When the power is on, the exhaust port is closed, and the air inlet is connected with the air outlet so that the gas enters the solenoid valve from the air inlet and then is discharged from the air outlet. When the power is off, the air inlet is closed, and the air outlet is connected with the exhaust port so that the excess gas inside the solenoid valve is discharged to reduce the pressure inside the solenoid valve. The mounting groove is provided on the side of the inner wall of the valve body and is located between the air inlet and the exhaust port. The limiting member is embedded in the mounting groove, and the limiting member is provided with an exhaust hole, and the exhaust hole is connected to the exhaust port; the valve plug assembly is installed on the valve body, and the valve plug assembly is used to control the opening or closing of the air port.

2. The two-position three-way solenoid valve according to claim 1, characterized in that: The electromagnetic assembly includes a shell and a coil component. A cavity structure is formed inside the shell, and an interface is arranged on the top. The cavity structure is used to install the coil component, and the interface is used to connect to an external power supply. A connecting groove is arranged on the bottom surface of the shell, and the connecting groove is used to connect to the valve body. The coil component is installed in the internal structure of the shell through a positioning member, and the coil component is connected to an external power supply to facilitate the control of the movement of the valve plug assembly.

3. The two-position three-way solenoid valve according to claim 2, characterized in that: A multi-channel cavity structure is formed inside the valve body, and a mounting protrusion is arranged on the top of the valve body. The mounting protrusion is embedded in the connecting groove on the bottom surface of the shell to facilitate the connection of the electromagnetic assembly to the valve body. A first cavity is arranged at the center of the valve body, and the first cavity is used to install the valve plug assembly. One side of the first cavity is arranged to be connected with the air outlet, and the other side is arranged to be connected with the air inlet and the air outlet, and the air inlet and the air outlet are arranged side by side.

4. The two-position three-way solenoid valve according to claim 1, characterized in that: The mounting groove is arranged on the inner wall surface of the first cavity and is located between the air inlet and the air outlet. The mounting groove is fixedly connected to the limiting member through a fixing member, and the fixing member is used to prevent air leakage between the air inlet and the air outlet.

5. The two-position three-way solenoid valve according to claim 4, characterized in that: One side of the limiting member is connected to the fixing member and installed on the installation groove, and the other side is higher than the inner wall surface of the first cavity; one port of the exhaust hole is located on the top surface of the limiting member and is connected to the exhaust port, and the other port of the exhaust hole is connected to the first cavity.

6. The two-position three-way solenoid valve according to claim 3, characterized in that: The valve plug assembly is used to control the fluid flow direction of the first cavity in the valve body; the valve plug assembly includes a valve plug head, a tightening spring and a push rod, the valve plug head is installed at the end of the push rod and is located between the limit piece and the first cavity, the valve plug head is provided with a second cavity, and the second cavity is used to install the push rod; the tightening spring is installed on the top of the push rod and connected to the electromagnetic assembly, the push rod is installed in the first cavity, and a fixing groove is provided on the top surface of the push rod, and the fixing groove is used to install the tightening spring.

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