Movable electromagnetic valve piston

Abstract

The utility model discloses a movable electromagnetic valve piston, which relates to the technical field of movable electromagnetic valves and comprises a shell, the top of the shell is in threaded connection with an upper cover, the top of the upper cover is fixedly connected with a window, the left side of the shell is fixedly connected with an air inlet hole, and the interior of the upper cover is in threaded connection with an indicator. A piston rod is arranged in the indicator, and a piston is arranged at the bottom of the indicator. The sealing ring is located on the limiting stopper, the lower end of the electromagnetic valve is sealed by the sealing plug, and the sealing ring and the sealing plug are matched to seal the interior of the electromagnetic valve, so that the interior of the electromagnetic valve needs to bear certain pressure when the electromagnetic valve runs, and the situation that a medium in the electromagnetic valve leaks is avoided; and meanwhile, the sealing ring and the sealing plug have good sealing performance, elasticity and toughness, so that high-frequency vibration and deformation can be borne, and the running flexibility of parts in the electromagnetic valve is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of movable electromagnetic valves, in particular to a movable electromagnetic valve piston. Background Art

[0002] Solenoid valves are basic automation components that use electromagnetic principles to control the flow of fluids or gases. They are actuators that are mostly used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. Solenoid valves are divided into three types according to their working principles: direct-acting, step-by-step direct-acting and pilot-operated. When the pilot-operated solenoid valve is energized, the electromagnetic coil generates an electromagnetic force to lift the closing piece from the valve seat, and the pilot valve port opens. At this time, a pressure difference is formed around the main valve core, with the upper part being lower and the lower part being higher. Under the action of the pressure difference, the fluid pressure pushes the main valve core upward to open the main valve port. When the power is off, the electromagnetic force disappears, and the closing piece is pressed tightly to close the main valve port under the action of its own gravity.

[0003] Under high pressure, ordinary seals of solenoid valves cannot play a sealing role and are either ejected or cut, and have poor stability. A movable solenoid valve piston is now proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a movable solenoid valve piston to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A movable electromagnetic valve piston comprises a shell, the top of the shell is threadedly connected to an upper cover, the top of the upper cover is fixedly connected to a window, the left side of the shell is fixedly connected to an air inlet, and the inner thread of the upper cover is connected to an indicator.

[0007] A further improvement of the technical solution of the utility model is that: a spring is fixedly connected to the outside of the piston, and the spring is sleeved on one end of the upper cover. The piston squeezes the pressure of the liquid into the spring, thereby driving the piston to move.

[0008] A further improvement of the technical solution of the utility model is that a limiter is provided at the bottom of the piston, and the limiter extends into the piston, a sealing ring is fixedly connected to the outside of the limiter, a threaded sleeve is provided at the bottom of the limiter, and the sealing ring seals the inside of the solenoid valve, so that when the solenoid valve is running, its interior needs to withstand a certain pressure to avoid leakage of the medium inside it.

[0009] A further improvement of the technical solution of the utility model is that a connecting tube is arranged on the surface of the piston rod, a piston spring is arranged on the outside of the connecting tube, the piston rod is inserted through the inside of the piston, the limiter and the screw sleeve, and when the piston rod is driven to operate, it can drive the piston, the limiter and the screw sleeve for transmission, thereby making the internal operation of the solenoid valve more flexible.

[0010] A further improvement of the technical solution of the utility model is that: a valve cover is threadedly connected to the tail end of the shell, a guide sleeve is arranged inside the valve cover, a sealing plug is fixedly connected to the top of the guide sleeve, the sealing plug and the guide sleeve are both located inside the shell, and the sealing plug seals the inside of the solenoid valve, so that when the solenoid valve is running, the inside of the solenoid valve needs to withstand a certain pressure to avoid leakage of the medium inside it.

[0011] A further improvement of the technical solution of the utility model is that a valve body is arranged at the bottom of the valve cover, a valve core is arranged inside the valve body, the sealing plug, the guide sleeve and the valve core are all sleeved on the outside of the piston rod, the valve core is the core component of the solenoid valve, and when the solenoid valve is in operation, the valve core moves under the action of magnetic force to control the flow of liquid or gas in the valve body.

[0012] A further improvement of the technical solution of the utility model is that a valve core sealing gasket is fixedly connected to the outside of the valve core, a stainless steel gasket is arranged inside the valve body, and the stainless steel gasket is located below the valve core, connecting heads are arranged at both ends of the valve body, and the stainless steel gasket isolates the valve core and the valve core sealing gasket from the lower end of the valve body, thereby protecting the valve core and the valve core sealing gasket, thereby increasing the service life of the valve core and the valve core sealing gasket.

[0013] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0014] 1. The utility model provides a movable solenoid valve piston, wherein the sealing ring is located on the limiter, and the lower end of the solenoid valve is sealed by a sealing plug. The sealing ring and the sealing plug cooperate to seal the inside of the solenoid valve, so that when the solenoid valve is running, the inside of the solenoid valve needs to withstand a certain pressure to avoid leakage of the medium inside the solenoid valve. At the same time, the sealing ring and the sealing plug have good sealing, elasticity and toughness, so that they can withstand high-frequency vibration and deformation, and ensure the flexibility of the operation of the parts inside the solenoid valve.

[0015] 2. The utility model provides a movable solenoid valve piston, which bears the gas pressure in the solenoid valve and transmits this force to the piston rod, driving the piston rod to operate. The piston squeezes the pressure of the liquid into the spring, thereby driving the piston to move. The piston is fixedly connected to the piston rod, so that when the pressure in the piston rod is insufficient, the piston can also be pushed to make the liquid flow, thereby making the solenoid valve operate more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the upper structure of the solenoid valve of the utility model;

[0019] Figure 4 It is a schematic diagram of the lower structure of the solenoid valve of the utility model.

[0020] In the figure: 11, outer shell; 12, upper cover; 13, window; 14, air inlet; 15, indicator; 16, piston rod; 17, piston; 18, spring; 19, limiter; 101, sealing ring; 102, screw sleeve; 103, connecting pipe; 21, valve cover; 22, sealing plug; 23, guide sleeve; 24, valve body; 25, valve core; 26, valve core sealing gasket; 27, stainless steel gasket; 28, connector. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the embodiments:

[0022] Example 1

[0023] like Figure 1-4 As shown, the utility model provides a movable solenoid valve piston, including a shell 11, a top cover 12 is threadedly connected to the top of the shell 11, a window 13 is fixedly connected to the top of the top cover 12, an air inlet 14 is fixedly connected to the left side of the shell 11, an indicator 15 is threadedly connected to the inside of the top cover 12, a piston rod 16 is arranged inside the indicator 15, a piston 17 is arranged at the bottom of the indicator 15, a spring 18 is fixedly connected to the outside of the piston 17, and the spring 18 is sleeved on one end of the top cover 12;

[0024] Specifically, the outer shell 11 and the upper cover 12 fix and wrap the internal parts of the solenoid valve, thereby protecting the interior. During the operation of the solenoid valve, the indicator 15 can detect the switching state of the solenoid valve. When the opening state of the solenoid valve changes, the indicator 15 senses it, so that the state of the indicator 15 can be observed through the window 13. The air inlet 14 is usually connected to the pipeline system through a joint, and compressed air can be introduced into the control chamber of the valve to control the opening and closing of the valve. The piston 17 withstands the gas pressure in the solenoid valve and transmits this force to the piston rod 16, driving the piston rod 16 to operate. The piston 17 squeezes the pressure of the liquid into the spring 18, thereby driving the piston 17 to move. The piston 17 is fixedly connected to the piston rod 16, so that when the pressure in the piston rod 16 is insufficient, the piston 17 can also be pushed to make the liquid flow, thereby making the solenoid valve operate more smoothly.

[0025] Example 2

[0026] like Figure 1-4 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a limiter 19 is provided at the bottom of the piston 17, and the limiter 19 extends into the piston 17, a sealing ring 101 is fixedly connected to the outside of the limiter 19, a screw sleeve 102 is provided at the bottom of the limiter 19, a connecting pipe 103 is provided on the surface of the piston rod 16, a piston spring is provided on the outside of the connecting pipe 103, and the piston rod 16 is inserted through the piston 17, the limiter 19 and the inside of the screw sleeve 102;

[0027] Specifically, the limiter 19 controls the switching state of the solenoid valve. When the valve core 25 of the solenoid valve moves to a certain position of the limiter, the limiter will send a signal to control the opening state of the solenoid valve. The sealing ring 101 is located on the limiter 19, and the lower end of the solenoid valve is sealed by the sealing plug 22. The sealing ring 101 and the sealing plug 22 cooperate to seal the inside of the solenoid valve. Therefore, when the solenoid valve is running, its interior needs to withstand a certain pressure to avoid leakage of the medium inside it. At the same time, the sealing ring 101 and the sealing plug 22 have good sealing, elasticity and toughness, so that they can withstand high-frequency vibration and deformation, and ensure the flexibility of the internal parts of the solenoid valve. The connecting pipe 103 and the guide sleeve 23 wrap the lower end of the piston rod 16 to ensure the stability of the piston rod 16.

[0028] Example 3

[0029] like Figure 1-4As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a valve cover 21 is threadedly connected to the tail end of the housing 11, a guide sleeve 23 is arranged inside the valve cover 21, a sealing plug 22 is fixedly connected to the top of the guide sleeve 23, the sealing plug 22 and the guide sleeve 23 are both located inside the housing 11, a valve body 24 is arranged at the bottom of the valve cover 21, a valve core 25 is arranged inside the valve body 24, the sealing plug 22, the guide sleeve 23 and the valve core 25 are all sleeved on the outside of the piston rod 16, a valve core sealing gasket 26 is fixedly connected to the outside of the valve core 25, a stainless steel gasket 27 is arranged inside the valve body 24, and the stainless steel gasket 27 is located below the valve core 25, and connectors 28 are arranged at both ends of the valve body 24;

[0030] Specifically, the valve core 25 is the core component of the solenoid valve. When the solenoid valve is in operation, the valve core 25 moves under the action of magnetic force to control the flow of liquid or gas in the valve body 24. The valve core sealing gasket 26 seals the upper part of the valve body 24 to prevent leakage of liquid in the upper part of the valve body 24. The stainless steel gasket 27 isolates the valve core 25 and the valve core sealing gasket 26 from the lower end of the valve body 24, thereby protecting the valve core 25 and the valve core sealing gasket 26, thereby increasing the service life of the valve core 25 and the valve core sealing gasket 26. The solenoid valve is connected to other equipment through a connector 28, and the interior of the connector 28 is threaded, which makes connection and disassembly more convenient.

[0031] The working principle of the movable solenoid valve piston is described in detail below.

[0032] like Figure 1-4 As shown, the housing 11 and the upper cover 12 fix and wrap the internal parts of the solenoid valve. During the operation of the solenoid valve, the indicator 15 can detect the switch state of the solenoid valve. The state of the indicator 15 can be observed through the window 13. The air inlet 14 and the connector 28 are connected to other parts, and are all threaded connections. The piston 17 withstands the gas pressure in the solenoid valve and transmits this force to the piston rod 16, driving the piston rod 16 to operate. The piston 17 squeezes the pressure of the liquid into the spring 18, thereby driving the piston 17 to move. The piston 17 is fixedly connected to the piston rod 16, so that the piston rod When the pressure in 16 is insufficient, the piston 17 can also be pushed to allow the liquid to flow. The sealing ring 101 and the sealing plug 22 cooperate to seal the inside of the solenoid valve. The connecting pipe 103 and the guide sleeve 23 wrap the lower end of the piston rod 16 to ensure the stability of the piston rod 16. The valve core 25 is the core component of the solenoid valve. When the solenoid valve is running, the valve core 25 moves under the action of magnetic force to control the flow of liquid or gas in the valve body 24. The stainless steel gasket 27 isolates the valve core 25 and the valve core sealing gasket 26 from the lower end of the valve body 24 to increase the service life of the valve core 25 and the valve core sealing gasket 26.

[0033] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A movable solenoid valve piston, comprising a housing (11), characterized in that: The top of the housing (11) is threadedly connected to an upper cover (12), the top of the upper cover (12) is fixedly connected to a viewing window (13), the left side of the housing (11) is fixedly connected to an air inlet (14), the interior of the upper cover (12) is threadedly connected to an indicator (15), a piston rod (16) is arranged inside the indicator (15), and a piston (17) is arranged at the bottom of the indicator (15).

2. The movable solenoid valve piston according to claim 1, characterized in that: The outside of the piston (17) is fixedly connected with a spring (18), and the spring (18) is sleeved on one end of the upper cover (12).

3. The movable solenoid valve piston according to claim 2, characterized in that: A limiter (19) is provided at the bottom of the piston (17), and the limiter (19) extends into the piston (17). A sealing ring (101) is fixedly connected to the outside of the limiter (19), and a threaded sleeve (102) is provided at the bottom of the limiter (19).

4. The movable solenoid valve piston according to claim 3, characterized in that: A connecting tube (103) is arranged on the surface of the piston rod (16), a piston spring is arranged outside the connecting tube (103), and the piston rod (16) penetrates through the interior of the piston (17), the stopper (19) and the screw sleeve (102).

5. The movable solenoid valve piston according to claim 1, characterized in that: The tail end of the housing (11) is threadedly connected to a valve cover (21), a guide sleeve (23) is provided inside the valve cover (21), a sealing plug (22) is fixedly connected to the top of the guide sleeve (23), and the sealing plug (22) and the guide sleeve (23) are both located inside the housing (11).

6. The movable solenoid valve piston according to claim 5, characterized in that: A valve body (24) is arranged at the bottom of the valve cover (21), a valve core (25) is arranged inside the valve body (24), and the sealing plug (22), the guide sleeve (23) and the valve core (25) are all sleeved on the outside of the piston rod (16).

7. The movable solenoid valve piston according to claim 6, characterized in that: The outside of the valve core (25) is fixedly connected to a valve core sealing gasket (26), the inside of the valve body (24) is provided with a stainless steel gasket (27), and the stainless steel gasket (27) is located below the valve core (25), and connectors (28) are provided at both ends of the valve body (24).

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