A switch valve

Abstract

The application relates to a switch valve which comprises an electric execution structure and a valve body mechanism, the electric execution structure comprises a shell, an external connector, a winding framework, a coil, an external connecting pole piece and a movable core, the external connector is arranged on the side wall of the shell, the winding framework is arranged in the shell, the external connecting pole piece is arranged at one end of the winding framework close to the external connector, the external connecting pole piece extends into the external connector, the coil is wound on the winding framework, the end of the coil is electrically connected with the external connecting pole piece, the two ends of the winding framework are arranged on a blocking plate, the winding framework is hollow, the movable core is slidably connected in the winding framework, the shell is fixed on the valve body mechanism, a spring is arranged between the end of the movable core away from the valve body mechanism and the winding framework, the spring can drive the movable core to move, and the movement of the movable core in the winding framework can drive the opening or closing of the valve body mechanism. The application has the effects of improving the stability of the valve and realizing the quick opening and closing of the valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a switch valve. BACKGROUND

[0002] The switch valve refers to the switch of the valve type, such as the faucet, the pressure cooker valve and the pipeline valve and so on. The switch valve is divided into the pneumatic switch valve and the electric switch valve. The pneumatic switch valve is pushed by the operating cylinder in the valve by the control air in the air path or the pipeline to drive the piston to move to change the valve position of the valve body; the electric switch valve is to change the valve position of the valve body by the electric motor or the electromagnetic attraction generated by the solenoid.

[0003] At present, the switch valve controlled by the electric motor generally includes the valve body, the motor and the valve core capable of controlling the valve position of the valve body, the valve core is driven to rotate in the valve body by the electric motor to control the valve position in the valve body, so as to realize the opening or closing of the valve.

[0004] In view of the related technology in the above, the switch valve controlled by the electric motor controls the work by the electric motor, which not only has high power consumption, but also has high failure rate and poor stability in the use process due to the movement of the valve core driven by the mechanical linkage, and the opening and closing reaction of the valve is slow, so it is difficult to realize the rapid opening and closing of the valve. SUMMARY

[0005] In order to improve the stability of the valve and realize the rapid opening and closing of the valve, the present application provides a switch valve.

[0006] The present application provides a switch valve, which adopts the following technical scheme:

[0007] A switch valve, comprising an electric actuating structure and a valve body mechanism, the electric actuating structure comprising a shell, an external connector, a winding skeleton, a coil, an external connector sheet and a movable core, the external connector is arranged on the side wall of the shell, the winding skeleton is arranged in the shell, the external connector sheet is arranged at one end of the winding skeleton close to the external connector, the external connector sheet extends into the external connector, the coil is wound on the winding skeleton, the end of the coil is electrically connected with the external connector sheet, the two ends of the winding skeleton are arranged on the blocking plate, the winding skeleton is hollow, the movable core is slidably connected in the winding skeleton, the shell is fixed on the valve body mechanism, the end of the movable core away from the valve body mechanism is provided with an elastic element between the winding skeleton, the elastic element can drive the movable core to move, and the movable core moving in the winding skeleton can drive the opening or closing of the valve body mechanism.

[0008] By adopting the technical scheme, when the valve is controlled to open and close, the coil on the winding framework is electrified to generate a magnetic field after the external pole piece is connected with the external power supply, the movable core is driven to slide in the winding framework under the action of the magnetic field, and the opening and closing of the valve body mechanism are driven by the movement of the movable core; when the pole piece is disconnected with the external power supply, the coil is de-energized, the magnetic field generated by the coil disappears, and the movable core is driven to move back under the action of the elastic member, thereby driving the opening and closing of the valve body mechanism, and the opening and closing control of the valve body mechanism is realized; the valve body is controlled to open and close by electromagnetism, the opening and closing of the valve body is fast, the movable core is controlled by electromagnetism, there is no complex mechanical transmission connection, and the switch valve has good running stability.

[0009] Optionally, the valve body mechanism comprises a passage pipe, a connecting pipe, a blocking core and a piston plug, the connecting pipe is vertically arranged on the passage pipe and communicates with the passage pipe, the blocking core is arranged in the passage pipe and opposite to the connecting pipe, the piston plug is slidably connected in the connecting pipe, the shell is fixedly connected with the connecting pipe, and one end of the piston plug away from the passage pipe is connected with the movable core.

[0010] By adopting the technical scheme, when the valve body mechanism is controlled by the electric actuator, the piston plug is driven to move by the movement of the movable core, the passage between the two ends of the pipe is closed by the abutting of the piston plug and the blocking core, and when the piston plug is separated from the blocking core, a flow passage is formed between the piston plug and the blocking core in the passage pipe, thereby realizing the opening and closing of the valve body mechanism.

[0011] Optionally, one end of the shell close to the connecting pipe is provided with a positioning pipe, a connecting disc is arranged on the side wall of the shell, the connecting disc is fixedly connected with the connecting pipe, the positioning pipe extends into the connecting pipe, the piston plug is slidably connected with the inner wall of the positioning pipe, one end of the connecting pipe close to the passage pipe is provided with a sealing groove, and a sealing assembly is arranged at the sealing groove.

[0012] By adopting the technical scheme, the positioning pipe is arranged to facilitate the fixed connection between the shell and the connecting pipe, improve the stability of the valve body during assembly, and the gap between the connecting pipe and the positioning pipe is sealed by the sealing assembly, further improving the sealing performance of the switch valve and avoiding fluid leakage.

[0013] Optionally, the sealing assembly comprises a sealing ring and a blocking ring, the sealing ring is arranged in the sealing groove, the blocking ring is slidably connected in the passage pipe, the inner diameter of the blocking ring gradually decreases from the fluid inlet end to the fluid outlet end, the side of the blocking ring close to the sealing ring is provided with a chamfered surface, and one end of the sealing ring extending out of the sealing groove is provided with an inclined surface matched with the chamfered surface of the blocking ring.

[0014] By adopting the technical scheme, when the switch valve works, after the fluid flows into the passage pipe, the fluid will form a moving force on the block ring when passing through the block ring due to the gradually decreasing inner diameter of the block ring, so as to drive the block ring to move in the passage pipe, and through the cooperation of the chamfer surface on the block ring and the inclined surface on the sealing ring, an upward thrust is formed on the sealing ring during the movement of the block ring, so that the sealing ring is always tightly pressed in the sealing groove to form a good sealing effect on the gap, thereby further improving the sealing performance of the switch valve.

[0015] Optionally, the sealing ring comprises a rubber ring and a support ring, the rubber ring is coaxially arranged at one end of the support ring extending into the sealing groove, and the support ring abuts against the block ring.

[0016] By adopting the technical scheme, through the support ring and the rubber ring, the support ring can form a good support effect on the rubber ring, and after the block ring forms a force on the support ring, the support ring can form a good support and thrusting effect on the rubber ring, thereby enabling the rubber ring to be tightly pressed in the sealing groove to form a good sealing effect.

[0017] Optionally, a flexible sealing piece is arranged at the end of the positioning pipe extending into the connecting pipe, and the block core abuts against the middle part of the flexible sealing piece.

[0018] By adopting the technical scheme, the flexible sealing piece has a good buffering effect when the piston plug abuts against the block core for sealing, and when the valve needs to be opened, the piston plug moves away from the block core, under the action of the fluid passing through the passage pipe under a large pressure, the flexible sealing piece is lifted up, thereby the fluid flows through the passage pipe, and the valve is more stable when being closed and opened.

[0019] Optionally, a communication hole is arranged on the flexible sealing piece, the communication hole is located on the side of the block core close to the fluid inlet end, and a through hole corresponding to the communication hole is arranged on the piston plug.

[0020] By adopting the technical scheme, when the fluid pressure in the passage pipe is large and the valve is closed, the fluid can pass through the communication hole and the through hole to keep the pressure on both sides of the piston plug in a balanced state, thereby avoiding the piston plug being lifted up due to the large pressure in the passage pipe, and further improving the stability of the switch valve when working.

[0021] Optionally, a cavity is arranged in the piston plug, a sliding block is slidably connected in the cavity, the movable core extends into the cavity and is fixedly connected with the sliding block, and a buffer spring is coaxially arranged at the end of the sliding block away from the movable core.

[0022] By adopting the technical scheme, the slider and the buffer elastic member are arranged, and when the movable core drives the piston plug to move to realize opening and closing of the valve, good buffering effect is achieved, and the stability of the valve during operation is further improved.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. By arranging the electric actuator including the shell, the external connector, the winding skeleton, the coil, the external connector sheet and the movable core, the magnetic field generated by the coil drives the movable core to move, and then drives the opening and closing of the valve body mechanism, thereby realizing the opening and closing control of the valve body mechanism. The electromagnetic control valve body switch makes the valve body switch quickly, and there is no complex mechanical transmission connection, thereby making the on-off valve have good running stability.

[0025] 2. By arranging the sealing assembly including the sealing ring and the plug ring, when the fluid flows into the passage pipe, the fluid passing through the plug ring will form a moving force on the plug ring, driving the plug ring to move in the passage pipe. The plug ring forms an upward thrust on the sealing ring during movement, so that the sealing ring is always tightly pressed in the sealing groove to form a good sealing effect on the gap.

[0026] 3. By arranging the flexible sealing piece, when the piston plug is tightly sealed with the plug core, the flexible sealing piece has good buffering effect. By arranging the communication hole and the through hole on the movable plug, the fluid can pass through the communication hole and the through hole, so that the pressure on both sides of the piston plug is balanced, avoiding the phenomenon that the piston plug is lifted due to large pressure in the passage pipe. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structure diagram of a switch valve according to an embodiment of the present application.

[0028] Figure 2 is a perspective sectional view of a switch valve according to an embodiment of the present application.

[0029] Figure 3 is Figure 2 an enlarged diagram of part A in FIG.

[0030] Figure 4 is a perspective sectional view of a switch valve in another state according to an embodiment of the present application.

[0031] Reference signs: 1, electric actuating structure; 11, housing; 111, positioning tube; 112, connecting disc; 12, external joint; 13, winding framework; 131, blocking plate; 14, coil; 15, external joint sheet; 16, movable core; 161, elastic member; 2, valve body mechanism; 21, passage tube; 22, connecting tube; 221, sealing groove; 23, blocking core; 24, piston blocking head; 241, through hole; 242, sliding block; 243, buffer elastic member; 25, sealing assembly; 251, rubber ring; 252, supporting ring; 253, blocking ring; 26, flexible blocking sheet; 261, communication hole. DETAILED DESCRIPTION

[0032] The following description will be made in conjunction with the accompanying drawings. Figures 1-4 The present application is further described in detail.

[0033] The present application discloses a switch valve. Referring to Figure 1 The switch valve comprises an electric actuating structure 1 and a valve body mechanism 2.

[0034] Referring to Figure 1 and Figure 2The electric actuator comprises a shell 11, an external connector 12, a winding frame 13, a coil 14, an external connecting piece 15 and a movable core 16. The external connector 12 is integrally fixed to the side wall of the shell 11 and is connected with the outside through the external connector 12. The side wall of the external connector 12 is integrally provided with a clamping fastener and a positioning block. When the external connector 12 is connected, the positioning block is positioned, and the clamping fastener is clamped with the outside to realize detachable connection. The winding frame 13 is installed and fixed in the shell 11. The external connecting piece 15 is fixed to one end of the winding frame 13 close to the external connector 12. The external connecting piece 15 extends into the external connector 12 to facilitate connection with the outside. The coil 14 is wound on the winding frame 13. The coil 14 is specifically formed by winding enameled wire. One end of the enameled wire of the coil 14 penetrates a wire slot provided on the winding frame 13 and is welded with one of the external connecting pieces 15. The other end of the enameled wire of the coil 14 is first wound on a winding column located on the winding frame 13 and then welded with the other external connecting piece 15. The two ends of the winding frame 13 are fixedly connected to a sealing plate 131. The sealing plate 131 seals the shell 11 and the winding frame 13. The winding frame 13 is hollow. The movable core 16 is slidably connected in the winding frame 13. The movable core 16 is specifically a movable iron core. The magnetic field generated by the coil 14 can drive the movable core 16 to move in the winding frame 13. An elastic member 161 is installed between the end of the movable core 16 away from the valve body mechanism 2 and the winding frame 13. The elastic member 161 is specifically a spring. When the coil 14 is electrified to generate a magnetic field to drive the movable core 16 to move, the elastic member 161 drives the movable core 16 to move back to the original position when the magnetic field disappears. Thus, the movement of the movable core 16 is controlled. The elastic member 161 can drive the movable core 16 to move. The electromagnetic control valve body switch can quickly switch the valve body and has good running stability.

[0035] Referring to Figure 2 With Figure 3, the movable core 16 in the winding frame 13 can drive the opening or closing of the valve body mechanism 2. The valve body mechanism 2 comprises a passage pipe 21, a connecting pipe 22, a plug core 23 and a piston plug 24, the connecting pipe 22 is integrally formed on the passage pipe 21 and communicates with the passage pipe 21, the plug core 23 is integrally formed in the passage pipe 21 and is arranged opposite to the connecting pipe, the plug core 23 can block the passage pipe 21 on both sides, the piston plug 24 is slidably connected in the connecting pipe 22, by moving the piston plug 24 in the connecting pipe 22, when the piston plug 24 abuts against the plug core 23, the passage in the passage pipe 21 is blocked, when the piston plug 24 is separated from the plug core 23, the passage in the passage pipe 21 is opened; the end of the piston plug 24 away from the passage pipe 21 is connected with the movable core 16, when the movable core 16 moves, the piston plug 24 can be driven to move to realize the opening and closing of the valve. A cavity is formed in the piston plug 24, a sliding block 242 is slidably connected in the cavity, the moving direction of the sliding block 242 is along the moving direction of the piston plug 24, the movable core 16 extends into the cavity and is fixedly connected with the sliding block 242, a buffer spring 243 is coaxially arranged at the end of the sliding block 242 away from the movable core 16, the buffer spring 243 is specifically a spring, when the movable core 16 drives the piston plug 24 to move, the buffer spring 243 can play a good buffering effect, further improving the stability of the valve during working.

[0036] With reference to Figure 2 and Figure 3 , the end of the positioning pipe 111 extending into the connecting pipe 22 is fixedly installed with a flexible sealing piece 26, the flexible sealing piece 26 is made of a material with elastic deformation, such as rubber, etc., when the flexible sealing piece 26 is in a natural state, the upper part of the plug core 23 abuts against the middle part of the flexible sealing piece 26. A communication hole 261 is formed in the flexible sealing piece 26, the communication hole 261 is located on the side of the plug core 23 close to the fluid inlet end, a through hole 241 corresponding to the communication hole 261 is formed in the piston plug 24; when the valve is closed, the fluid can enter the side of the piston plug 24 away from the plug core 23 through the communication hole 261 and the through hole 241, so that the pressure on both sides of the piston plug 24 is relatively balanced, thereby avoiding that the piston plug 24 is lifted up to cause leakage when the pressure in the passage pipe 21 is large, so that the control of the on-off valve is more stable.

[0037] With reference to Figure 2 and Figure 3The shell 11 is fixedly installed on the connecting pipe 22, the shell 11 and the connecting pipe 22 are fixedly connected through bolts, one end of the shell 11 close to the connecting pipe 22 is integrally formed with a positioning pipe 111, the positioning pipe 111 can extend into the connecting pipe 22, the sidewall of the shell 11 is integrally formed with a connecting disc 112, the connecting disc 112 is connected with the connecting pipe 22 through bolts on the side, a sealing gasket is installed at the connecting position of the connecting disc 112 and the connecting pipe 22, the piston plug 24 is slidably connected with the inner wall of the positioning pipe 111, a sealing groove 221 is arranged in the connecting pipe 22 close to one end of the passage pipe 21, a sealing assembly 25 is installed at the sealing groove 221, the sealing assembly 25 is used for sealing the gap between the connecting pipe 22 and the positioning pipe 111, further improving the sealing performance of the switch valve.

[0038] With reference to Figure 3 With Figure 4 The sealing assembly 25 includes a sealing ring and a blocking ring 253, the sealing ring is installed in the sealing groove 221, the sealing ring includes a rubber ring 251 and a supporting ring 252, the rubber ring 251 is coaxially arranged at one end of the supporting ring 252 extending into the sealing groove 221, one end of the supporting ring 252 away from the rubber ring 251 and close to the inlet end of the passage pipe 21 extends out of the sealing groove 221, the blocking ring 253 is slidably connected in the passage pipe 21, the inner diameter of the blocking ring 253 gradually decreases from the fluid inlet end to the fluid outlet end, the side of the blocking ring 253 close to the sealing ring is provided with a chamfer surface, one end of the sealing ring extending out of the sealing groove 221 is provided with an inclined surface matched with the chamfer surface of the blocking ring 253, the supporting ring 252 abuts against the blocking ring 253, when the fluid flows in the passage pipe 21, the fluid will form a moving force on the blocking ring 253 when passing through, which drives the blocking ring 253 to move in the passage pipe 21, through the mutual cooperation of the chamfer surface of the blocking ring 253 and the inclined surface of the sealing ring, the blocking ring 253 forms an upward thrust on the sealing ring during the movement, so that the rubber ring 251 is always tightly abutted in the sealing groove 221 to improve the sealing performance, when the pressure in the passage pipe 21 is greater, the thrust on the blocking ring 253 is greater, and then the force of the blocking ring 253 on the supporting ring 252 is greater, and then the rubber ring 251 is more tightly abutted in the sealing groove 221 as the pressure in the passage pipe 21 is greater, thereby maintaining good sealing performance in the switch valve during operation.

[0039] The implementation principle of the switch valve is as follows: when the valve is controlled to be opened or closed, the external pole piece 15 is connected with the external power supply, the coil 14 is powered to generate a magnetic field, the movable core 16 is driven to slide in the winding frame 13 under the action of the magnetic field, the movement of the movable core 16 drives the piston plug 24 to move, when the piston plug 24 is separated from the flexible sealing piece 26, the flexible sealing piece 26 is deformed under the action of the fluid pressure in the passage pipe 21, the flexible sealing piece 26 is lifted to be separated from the plug core 23, and then the passage in the passage pipe 21 is communicated; when the coil 14 is powered off, the magnetic field generated by the coil 14 disappears, the movable core 16 is driven to reset under the action of the spring, the movable core 16 drives the piston plug 24 to move, the piston plug 24 pushes the flexible sealing piece 26 to abut against the plug core 23, and the sealing effect of the passage in the passage pipe 21 is realized; and when the valve works, the fluid pressure drives the plug ring 253 to move in the passage pipe 21, the plug ring 253 generates an upward thrust on the sealing ring in the moving process, and the rubber ring 251 abuts against the sealing groove 221 all the time, so that the sealing performance is improved.

[0040] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A switching valve characterized by: The utility model provides an electric actuating structure (1) and valve body mechanism (2) are included, the electric actuating structure (1) includes shell (11), external connector (12), winding skeleton (13), coil (14), external connection pole piece (15) and movable core (16), external connector (12) is located the side wall of shell (11), winding skeleton (13) is located in the shell (11), external connection pole piece (15) is located winding skeleton (13) near one end of external connector (12), external connection pole piece (15) extends into external connector (12), coil (14) is arranged on winding skeleton (13), and the end of coil (14) is electrically connected with external connection pole piece (15), both ends of winding skeleton (13) are located in the stop plate (131), winding skeleton (13) is hollowly arranged, movable core (16) is slidably connected in winding skeleton (13), shell (11) is fixed on valve body mechanism (2), and the end of movable core (16) away from valve body mechanism (2) is provided with elastic element (161) with winding skeleton (13), elastic element (161) can drive movable core (16) to move, and movable core (16) is movable in winding skeleton (13) and can drive the opening or closing of valve body mechanism (2). The valve body mechanism (2) includes a passage pipe (21), a connecting pipe (22), a plug core (23), and a piston plug (24). The connecting pipe (22) is vertically arranged on the passage pipe (21) and communicates with the passage pipe (21). The plug core (23) is arranged in the passage pipe (21) and opposite to the connecting pipe. The piston plug (24) is slidably connected in the connecting pipe (22). The shell (11) is fixedly connected with the connecting pipe (22). The end of the piston plug (24) away from the passage pipe (21) is connected with the movable core (16). The end of the shell (11) close to the connecting pipe (22) is provided with a positioning pipe (111). The side wall of the shell (11) is provided with a connecting disc (112). The connecting disc (112) is fixedly connected with the connecting pipe (22). The positioning pipe (111) extends into the connecting pipe (22). The piston plug (24) is slidably connected with the inner wall of the positioning pipe (111). The end of the connecting pipe (22) close to the passage pipe (21) is provided with a sealing groove (221). The sealing groove (221) is provided with a sealing assembly (25). The sealing assembly (25) is used for sealing the gap between the connecting pipe (22) and the positioning pipe (111).

2. A switch valve according to claim 1, characterized in that: The sealing assembly (25) includes a sealing ring and a plug ring (253). The sealing ring is arranged in the sealing groove (221). The plug ring (253) is slidably connected in the passage pipe (21). The inner diameter of the plug ring (253) gradually decreases from the fluid inlet end to the fluid outlet end. The side of the plug ring (253) close to the sealing ring is provided with a chamfered surface. The end of the sealing ring extending out of the sealing groove (221) is provided with an inclined surface matched with the chamfered surface of the plug ring (253).

3. A switch valve according to claim 2, characterised in that: The sealing ring comprises a rubber ring (251) and a supporting ring (252), the rubber ring (251) is coaxially arranged at one end of the supporting ring (252) extending into the sealing groove (221), and the supporting ring (252) abuts against the plug ring (253).

4. The on-off valve according to claim 1, characterized by: One end of the positioning pipe (111) extending into the connecting pipe (22) is provided with a flexible sealing sheet (26), and the plug core (23) abuts against the middle part of the flexible sealing sheet (26).

5. A switch valve according to claim 4, characterised in that: The flexible sealing sheet (26) is provided with a communication hole (261), the communication hole (261) is located on one side of the plug core (23) close to the fluid inlet end, and the piston plug (24) is provided with a penetrating hole (241) corresponding to the communication hole (261).

6. A switch valve according to claim 1, characterized in that: The piston plug (24) is provided with a cavity, a sliding block (242) is slidably connected in the cavity, the movable core (16) extends into the cavity and is fixedly connected with the sliding block (242), and one end of the sliding block (242) away from the movable core (16) is coaxially provided with a buffer elastic member (243).

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