Liquid leakage prevention electromagnetic valve

Abstract

The invention relates to the technical field of electromagnetic valves, in particular to a liquid leakage prevention electromagnetic valve which comprises a piston part, the piston part comprises a piston cylinder and a piston column, the piston cylinder is filled with fluid, one end of the piston column is inserted into the piston cylinder, and the other end of the piston column is inserted into the piston cylinder. The other end of the piston cylinder is connected with the valve element and enables fluid to be sucked into or discharged out of the piston cylinder along with movement of the valve element. And the sealing part is installed in the section channel of the valve body, the sealing part comprises a supporting body and an annular air bag, the annular air bag is communicated with the output end of the piston cylinder, and when the valve port is closed, the annular air bag is filled with fluid and expands to be matched with the supporting body to form a sealing face for blocking the section channel. Through the arrangement of the piston part and the sealing part, the piston part can push fluid into the annular air bag to enable the sealing surface to be formed when the valve element descends to close the valve port, so that the section channel is sealed, and meanwhile, the fluid can be sucked into the piston cylinder to enable the sealing surface to be disassembled when the valve element ascends to open the valve port.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic valves, in particular to an anti-liquid leakage electromagnetic valve. Background Art

[0002] The solenoid valve is a technology that uses electromagnetics as a power source to open or close the valve core, which makes it easy for users to remotely control the opening of the solenoid valve. However, with continued use, the contact surface between the valve core and the valve seat will inevitably wear, which can easily lead to leakage.

[0003] For example, the Chinese patent with application number "2023114893190" and the name "A liquid leakage-proof solenoid valve" includes a vertical core tube and two horizontal core tubes symmetrically arranged on the left and right sides of the lower end of the vertical core tube. The two horizontal core tubes and the vertical core tube form an inverted T-shaped core tube, and the interiors of the two horizontal core tubes and the vertical core tubes are interconnected so that an inverted T-shaped cavity is formed inside the T-shaped core tube. A coil assembly is fixedly mounted on the outer sleeve of the vertical core tube, and an iron valve core that can move up and down and is vertically arranged is provided inside the vertical core tube. A long mounting plate that runs through its diameter in the front-to-back direction is provided near the outer end of one or two horizontal core tubes, and two valve plates are rotatably installed on the upper and lower side walls of the mounting plate; it can be seen that it is achieved by arranging mounting plates on both sides of the valve core, and using the mounting plates to expand after the valve core is closed to seal the cross section.

[0004] However, in actual use, due to the erosion of the medium and the oxidation of the metal, the cross-section inside the valve body is often irregular. At this time, there is often a gap between the mounting plate and the valve body, and the sealing effect is poor. Summary of the invention

[0005] The present invention aims to solve the problem that the cross-sectional channel of the valve body in the prior art is often irregular, which is not conducive to cross-sectional sealing, and provides a liquid leakage-proof solenoid valve. The specific technical solution is as follows:

[0006] Anti-leakage solenoid valve, including:

[0007] A valve body, wherein a valve port is formed inside the valve body;

[0008] and a sleeve, wherein a valve core is arranged in the sleeve and is electromagnetically driven to open or close the valve port;

[0009] Also includes:

[0010] The piston part includes a piston cylinder and a piston rod. The piston cylinder is filled with fluid. One end of the piston rod is inserted into the piston cylinder, and the other end is connected to the valve core. The fluid is sucked into or discharged from the piston cylinder as the valve core moves.

[0011] and a sealing portion, which is installed in the cross-sectional channel of the valve body, and includes a support body and an annular airbag, which is connected to the output end of the piston cylinder, and the annular airbag is filled with fluid and expands when the valve port is closed to cooperate with the support body to form a sealing surface that blocks the cross-sectional channel.

[0012] As a further technical solution of the present invention, two groups of sealing parts are provided, which are distributed on the front and rear sides of the valve port along the flow path.

[0013] As a further technical solution of the present invention, the piston cylinder is installed on the side wall of the valve body and is arranged relative to the valve core with the valve port as a reference, and its internal space extends toward the valve body.

[0014] As a further technical solution of the present invention, a gap is provided between the piston column and the valve port to allow the medium to flow when the valve port is opened.

[0015] As a further technical solution of the present invention, the support body is installed on the valve body, the annular airbag is circumferentially wrapped around the support body, an inwardly concave notch is opened on the circumference of the support body, and the annular airbag is placed in the notch.

[0016] As a further technical solution of the present invention, a connecting channel 1 is also provided in the valve body, and one end of the connecting channel 1 is connected to the side of the piston cylinder away from the piston column. A connecting channel 2 is provided in the support body, and the input end of the connecting channel 2 is connected to the other end of the connecting channel 1, and the output end of the connecting channel 2 is connected to the annular airbag.

[0017] As a further technical solution of the present invention, the interior of the valve body is connected to form a flow path, and the valve port is connected to the flow path.

[0018] As a further technical solution of the present invention, the sleeve is further provided with:

[0019] A guide channel is connected to the valve port, and the valve core is movably arranged in the guide channel;

[0020] An excitation coil is arranged around the outside of the guide channel;

[0021] and a spring, which is connected between the valve core and the guide passage and provides elastic force to allow the valve core to move in a direction of closing the valve port.

[0022] The beneficial effects of the present invention are as follows:

[0023] (1) In the present application, through the arrangement of the piston part and the sealing part, the piston part can push the fluid into the annular airbag to form the sealing surface when the valve core descends to close the valve port, thereby sealing the cross-sectional channel, and at the same time can suck the fluid into the piston cylinder to disintegrate the sealing surface when the valve core rises to open the valve port; and, the present application utilizes the characteristics of the fluid to adapt to the irregular structure on the cross section of the valve body, and can fully match the cross-sectional shape of the valve body to form a seal.

[0024] (2) In the present application, a groove for accommodating the annular airbag is provided on the support body, which can hide the annular airbag in a normal state to avoid direct erosion of the annular airbag in a normal state when the medium flows, thereby ensuring the connection effect between the support body and the annular airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It shows a schematic diagram of the structure of the valve core opening in the anti-leakage solenoid valve;

[0026] Figure 2 A schematic diagram of the structure of the valve core closing in the anti-leakage solenoid valve is shown;

[0027] Figure 3 A schematic structural diagram of a sealing portion is shown;

[0028] Figure 4 A schematic diagram of the structure of the notch is shown;

[0029] Figure 5 A schematic structural diagram of connecting channel 2 is shown.

[0030] 110. Valve body; 111. Valve seat; 112. Valve port; 120. Sleeve; 121. Guide channel; 122. Excitation coil; 123. Valve core; 124. Spring; 200. Piston part; 210. Piston cylinder; 220. Piston column; 230. Connecting channel 1; 300. Sealing part; 310. Support body; 311. Notch; 312. Connecting channel 2; 320. Annular airbag. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0032] Figure 1 It shows a schematic diagram of the structure of the valve core opening in the anti-leakage solenoid valve; Figure 2 A schematic diagram of the structure of the valve core closing in the anti-leakage solenoid valve is shown; Figure 1 and Figure 2The anti-leakage solenoid valve includes a valve body 110, the interior of the valve body 110 is connected to form a flow path, the valve body 110 has a valve seat 111 and forms a valve port 112 connected to the flow path; the valve seat 111 is used to form a valve port 112 that forces the medium to pass through, so that the flow path can be opened or closed by only opening and closing the valve port 112; and a sleeve 120 is also included. The sleeve 120 is provided with a guide channel 121 connected to the valve port 112; an excitation coil 122 is arranged around the guide channel 121 The valve core 123 is arranged in the guide channel 121 and is driven by the excitation coil 122 to open or close the valve port 112; the spring 124 is connected between the valve core 123 and the guide channel 121 and provides elastic force to allow the valve core 123 to move in the direction of closing the valve port 112; that is, under normal conditions, the valve core 123 is affected by the elastic force of the spring 124 to descend and close the valve port 112, and when powered on, the valve core 123 is driven by the excitation coil 122 to rise and open the valve port 112, so as to form a complete solenoid valve structure.

[0033] Continue to see Figure 1 and Figure 2 The valve body 110 is also provided with a piston part 200, and the piston part 200 includes a piston cylinder 210, which is provided on the opposite side of the valve core 123 based on the valve port 112 and is filled with fluid, a piston rod 220, which is connected to the valve core 123 and inserted into the piston cylinder 210, and a connecting channel 230, which is opened in the valve body 110 and one end of which is connected to the side of the piston cylinder 210 away from the piston rod 220; the piston cylinder 210 and the piston rod 220 constitute an injection structure, so that the piston cylinder 210 is connected to the valve core 123, and the displacement of the valve core 123 itself is used as a driving force to make the valve The core 123 extracts fluid when it is raised to open the valve port 112, and pushes out fluid when it is lowered to close the valve port 112; there is a gap between the piston column 220 and the valve port 112 to allow the medium to flow; this is because the piston column 220 will penetrate the valve port 112, so that when the valve port 112 is opened, the medium can flow out from the gap between the piston column 220 and the valve port 112, and blockage is also avoided; the piston cylinder 210 is installed on the valve body 110, and its internal space extends toward the valve body 110; in this way, the internal space of the piston cylinder 210 can be further expanded, which is beneficial to the storage of the fluid.

[0034] It should be noted that the fluid filled in the piston cylinder 210 can be a gas, a liquid or a gel-like substance, and the present application does not impose too many restrictions here.

[0035] Figure 3 shows a schematic structural diagram of the sealing portion 300; Figure 3A sealing portion 300 is provided on the cross-sectional channel of the valve body 110, and the sealing portion 300 includes a support body 310 and an annular airbag 320. The annular airbag 320 is connected to the output end of the piston cylinder 210 and expands when the piston rod 220 pushes out the fluid to cooperate with the support body 310 to form a sealing surface; when the piston rod 220 descends along with the valve core 123, the fluid in the piston cylinder 210 can be pushed out, and the fluid in the piston cylinder 210 is pushed into the annular airbag 320, so that the annular airbag 320 expands and cooperates with the support body 310 to form a sealing surface, and the sealing surface is used to seal the cross-sectional channel. In the present application, the characteristics of the fluid are used to adapt to the irregular structure on the cross section of the valve body 110, and the cross-sectional shape of the valve body 110 can be fully matched to form a seal.

[0036] It should be noted that, in the present application, the internal space of the valve body 110 is a straight through structure, but in some other embodiments, the interior of the valve body 110 may also be curved or winding, and it can be sealed.

[0037] Figure 4 A schematic diagram of the structure of the notch 311 is shown; Figure 4 In the figure, the support body 310 is installed on the valve body 110, and the annular airbag 320 is circumferentially wrapped around the support body 310. The support body 310 is provided with an inwardly concave notch 311 on its circumference, and the annular airbag 320 is placed in the notch 311. With the setting of the notch 311, under normal conditions, the annular airbag 320 can be hidden in the notch 311. In this way, when the medium flows and flushes, it will not directly impact the annular airbag 320, thereby effectively ensuring the connection effect between the support body 310 and the annular airbag 320.

[0038] Figure 5 A schematic diagram of the structure of the second connecting channel 312 is shown; Figure 5 In the support body 310, a connecting channel 2 312 is provided in the support body 310, the input end of the connecting channel 2 312 is connected to the connecting channel 1 230, and the output end of the connecting channel 2 312 is connected to the annular airbag 320; through the cooperation of the connecting channel 1 230 and the connecting channel 2 312, a channel for fluid transfer can be built, and the channel is provided between the annular airbag 320 and the piston cylinder 210, thereby allowing the fluid to be transferred between the piston cylinder 210 and the annular airbag 320.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. Anti-leakage solenoid valve, including: A valve body (110), wherein the valve body (110) has a valve port (112) inside; and a sleeve (120), wherein a valve core (123) is arranged in the sleeve (120) and is electromagnetically driven to open or close the valve port (112); It is characterized in that Also includes: A piston part (200), the piston part (200) comprising a piston cylinder (210) and a piston rod (220), the piston cylinder (210) being filled with fluid, one end of the piston rod (220) being inserted into the piston cylinder (210), and the other end being connected to the valve core (123) so that the fluid is sucked into or discharged from the piston cylinder (210) as the valve core (123) moves; and a sealing portion (300), wherein the sealing portion (300) is installed in the cross-sectional channel of the valve body (110), wherein the sealing portion (300) comprises a support body (310) and an annular airbag (320), wherein the annular airbag (320) is connected to the output end of the piston cylinder (210), and when the valve port (112) is closed, the annular airbag (320) is filled with fluid and expands to cooperate with the support body (310) to form a sealing surface that blocks the cross-sectional channel.

2. The anti-leakage solenoid valve according to claim 1, characterized in that: The sealing parts (300) are provided in two groups and are distributed on both sides of the front and rear of the valve port (112) along the flow path.

3. The anti-leakage solenoid valve according to claim 2, characterized in that: The piston cylinder (210) is mounted on the side wall of the valve body (110) and is arranged opposite to the valve core (123) with the valve port (112) as a reference, and its internal space extends toward the valve body (110).

4. The anti-leakage solenoid valve according to claim 3, characterized in that: A gap is provided between the piston rod (220) and the valve port (112) to allow medium to flow when the valve port (112) is opened.

5. The anti-leakage solenoid valve according to claim 4, characterized in that: The support body (310) is mounted on the valve body (110), and the annular airbag (320) is circumferentially wrapped around the support body (310). An inwardly concave notch (311) is provided on the circumference of the support body (310), and the annular airbag (320) is placed in the notch (311).

6. The anti-leakage solenoid valve according to claim 5, characterized in that: The valve body (110) is also provided with a connecting channel 1 (230), one end of which is connected to a side of the piston cylinder (210) away from the piston column (220). The support body (310) is provided with a connecting channel 2 (312), the input end of the connecting channel 2 (312) is connected to the other end of the connecting channel 1 (230), and the output end of the connecting channel 2 (312) is connected to the annular airbag (320).

7. The anti-leakage solenoid valve according to claim 6, characterized in that: The valve body (110) is connected inside to form a flow path, and the valve port (112) is connected to the flow path.

8. The anti-leakage solenoid valve according to claim 7, characterized in that: The sleeve (120) is further provided with: A guide channel (121) is connected to the valve port (112), and the valve core (123) is movably arranged in the guide channel (121); An excitation coil (122) is disposed around the outside of the guide channel (121); and a spring (124) connected between the valve core (123) and the guide passage (121) and providing elastic force to allow the valve core (123) to move in a direction of closing the valve port (112).

Images