CN115978227B - Pilot-operated two-position four-way solenoid valve - Google Patents
Pilot-operated two-position four-way solenoid valve Download PDFInfo
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- CN115978227B CN115978227B CN202310265580.6A CN202310265580A CN115978227B CN 115978227 B CN115978227 B CN 115978227B CN 202310265580 A CN202310265580 A CN 202310265580A CN 115978227 B CN115978227 B CN 115978227B
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Abstract
The invention provides a pilot-operated two-position four-way electromagnetic valve which comprises a valve body, a valve core assembly and an electromagnetic control assembly, wherein a valve cavity, a piston cavity and an electromagnetic control cavity which are sequentially communicated are arranged in the valve body, and a P port, a B port, an A port and an E port which are communicated with the valve cavity; the P port is communicated with the electromagnetic control cavity through a first flow passage, and the E port is communicated with the electromagnetic control cavity through a second flow passage; the valve core assembly comprises a valve rod penetrating through the valve cavity and a piston piece connected with the valve rod and slidably arranged in the piston cavity, a piston left cavity and a piston right cavity are respectively formed on two sides of the piston piece, the piston left cavity is always communicated with the P port, and the piston right cavity is communicated with the electromagnetic control cavity; the electromagnetic control assembly is arranged in the electromagnetic control cavity and used for controlling any one of the first flow passage and the second flow passage to be communicated with the right cavity of the piston, and the other one of the first flow passage and the second flow passage is disconnected with the right cavity of the piston. The pilot-operated two-position four-way electromagnetic valve provided by the invention can be used for common gas and liquid mediums, and is stable and reliable in control and good in tightness.
Description
Technical Field
The invention relates to the field of electromagnetic valves, in particular to a pilot-operated two-position four-way electromagnetic valve.
Background
Solenoid valves are an actuator in automatic control systems for controlling fluid flow and changing direction of fluid, typically gas and liquid. Common solenoid valve forms generally include two-position two-way, two-position three-way, and two-position four-way, where two-position four-way controls more complex fluid directions.
At present, two-position four-way solenoid valves are mainly divided into a direct-acting type and a pilot type, and the direct-acting two-position four-way solenoid valve is mainly applicable to liquid media, and has the defects of high coil power, large volume, low use pressure, small flow path, high failure rate and the like. The pilot-operated two-position four-way electromagnetic valve is characterized by low coil power, small volume, large flow path, good reliability and relatively low maintenance cost; however, the electromagnetic valve adopts an open pressure relief structure, and the pressure relief opening is directly communicated with the outside, so that the electromagnetic valve can only be suitable for a gaseous medium; in addition, the electromagnetic valve needs to control the pressure of a plurality of cavities to realize the on-off of the flow channel, has a complex structure and is unstable and unreliable in control. Therefore, it is necessary to design a general-purpose electromagnetic valve which is applicable to both liquid and gas and combines the advantages of pilot type.
Disclosure of Invention
First, the technical problem to be solved
The invention aims to solve the problem of providing a pilot type two-position four-way electromagnetic valve which can be used for common gas and liquid mediums, and has stable and reliable control and good sealing performance.
(II) technical scheme
In order to solve the technical problem, the invention provides a pilot-operated two-position four-way electromagnetic valve, which comprises the following components.
The valve body is internally provided with a valve cavity, a piston cavity and an electromagnetic control cavity which are sequentially communicated, and a P port, a B port, an A port and an E port which are communicated with the valve cavity; the P port is communicated with the electromagnetic control cavity through a first flow passage, and the E port is communicated with the electromagnetic control cavity through a second flow passage.
The valve core assembly comprises a valve rod penetrating through the valve cavity and a piston piece connected with the valve rod and slidably installed in the piston cavity, a left piston cavity and a right piston cavity are formed in two sides of the piston piece respectively, the left piston cavity is always communicated with the P port, and the right piston cavity is communicated with the electromagnetic control cavity.
And the electromagnetic control assembly is arranged in the electromagnetic control cavity and used for controlling any one of the first runner and the second runner to be communicated with the right cavity of the piston, and the other runner is disconnected with the right cavity of the piston.
Further, the electromagnetic control assembly comprises a stationary core and a slidable movable core which are arranged in the electromagnetic control cavity; the stationary core is provided with an upper valve port communicated with the second flow channel at the upper end and a lower valve port communicated with the first flow channel at the lower end; the movable iron core is provided with an upper plug body for opening and closing the upper valve port and a lower plug body for opening and closing the lower valve port, and the upper plug body is linked with the lower plug body, so that one valve port is always opened by the two plug bodies, and the other valve port is closed by the two plug bodies.
Further, a control upper cavity and a control lower cavity are respectively formed on the upper side and the lower side of the stationary core, the control upper cavity is communicated with the control lower cavity through a through runner, and the control lower cavity is communicated with the right cavity of the piston through a diversion hole; one side of the stationary core is provided with a first L-shaped flow passage and a second L-shaped flow passage, the second flow passage, the first L-shaped flow passage, the upper valve port and the control upper cavity are sequentially communicated, and the first flow passage, the second L-shaped flow passage, the lower valve port and the control lower cavity are sequentially communicated.
Further, the upper plug body is connected with the lower plug body through symmetrically arranged guide posts, the guide posts penetrate through the stationary core, and guide holes matched with the guide posts are formed in the stationary core.
Further, the electromagnetic control assembly further comprises a magnetism isolating pipe and an electromagnetic coil arranged on the outer side of the magnetism isolating pipe, the movable iron core is arranged in the magnetism isolating pipe in a sliding mode, a first spring is arranged between the movable iron core and the magnetism isolating pipe, and a second spring is arranged between the lower plug body and the bottom wall of the electromagnetic control cavity; when in a power-off state, under the action of two springs, the upper plug body seals the upper valve port, the lower plug body opens the lower valve port, the P port is communicated with the right cavity of the piston through the first flow passage, and the E port is disconnected with the right cavity of the piston.
Further, a piston middle cavity is formed on the outer side of the middle part of the piston piece, and the piston middle cavity is always communicated with the E port through a third flow passage. A piston seat is arranged between the valve cavity and the piston cavity, the left piston cavity is positioned in the piston seat, the middle piston cavity is positioned between the piston seat and the piston piece, and the right piston cavity is positioned in the piston cavity; the cross-sectional area of the left piston cavity is smaller than that of the right piston cavity, and the piston piece moves towards the left piston cavity under the same pressure.
Further, the valve body comprises a valve body main body and a valve cover which are in sealing connection, the valve cover is arranged vertically to the valve body main body, the valve cavity, the P port, the B port, the A port and the E port are all arranged on the valve body main body, the piston cavity and the electromagnetic control cavity are all arranged on the valve cover, the valve cavity and the piston cavity are positioned on the same central axis, and the electromagnetic control cavity is positioned on the upper side of the piston cavity; one side of the valve body main body is fixed with an end cover for blocking the valve cavity.
Further, a first sealing element is arranged at the position corresponding to the port B of the valve rod, and a second sealing element is arranged at the position corresponding to the port A of the valve rod; the first sealing piece and the second sealing piece are identical in structure and symmetrically arranged, the first sealing piece and the second sealing piece are both arranged in a sleeved mode, the copper main body on the valve rod and the rubber covering piece wrapping the copper main body are both arranged in a sleeved mode, the rubber covering piece is provided with a first sealing surface on one side, a second sealing surface on the other side, and a sliding sealing surface with a V-shaped structure on the inner side.
Further, the port P is a pressure port, the port B and the port A are outlets, the port E is a discharge port, and the port P is always communicated with the left cavity of the piston through a central hole in the valve rod; in the power-off state, the valve rod is in left limit, the port P is communicated with the port A, and the port B is communicated with the port E under the action of two sealing elements; and in the electrified state, the valve rod is in right limit, the port P is communicated with the port B, and the port A is communicated with the port E.
(III) beneficial effects.
According to the pilot-operated two-position four-way electromagnetic valve provided by the invention, the P port can be communicated with the right cavity of the piston through the first flow passage to pressurize the right cavity of the piston, the E port can be communicated with the right cavity of the piston through the second flow passage to release pressure of the right cavity of the piston, and the electromagnetic control assembly controls the first flow passage or the second flow passage to be communicated with the right cavity of the piston, so that the left and right movement of the valve rod assembly is controlled, the flow passage can be switched only by controlling the pressure of the right cavity of the piston during control, the control process is simpler, and the control process is more stable and reliable; in addition, the middle cavity of the piston is always communicated with the E port through the third flow passage, so that the piston member is ensured not to bear additional pressure, and the piston member moves more stably and reliably; the second flow channel is a pressure relief flow channel, and the pressure relief flow channel is arranged in the valve body and is directly communicated with the E port for pressure relief, so that the valve can be used for gas and liquid media in general and the universality is improved; and the sliding sealing surface of the sealing element tightly wraps the valve rod step, so that the sealing element can not swing, can be perfectly sealed with the valve rod, can ensure that the sealing surfaces on two sides are smooth, can also increase the overall strength, and is stable and reliable to use.
Drawings
Fig. 1 is a schematic structural diagram of a pilot-operated two-position four-way solenoid valve according to the present invention.
Fig. 2 is a schematic structural diagram of an electromagnetic control assembly of a pilot-operated two-position four-way solenoid valve according to the present invention.
Fig. 3 is a schematic structural diagram of a stationary core of a pilot-operated two-position four-way solenoid valve according to the present invention.
Fig. 4 is a schematic structural diagram of a lower plug body of a pilot-operated two-position four-way solenoid valve according to the present invention.
FIG. 5 is a schematic diagram of a pilot-operated two-position four-way solenoid valve of the present invention with a valve cartridge assembly connected.
Fig. 6 is a schematic structural diagram of a piston member of a pilot-operated two-position four-way solenoid valve according to the present invention.
Fig. 7 is a schematic structural diagram of a first sealing member of a pilot-operated two-position four-way solenoid valve according to the present invention.
FIG. 8 is a schematic illustration of a pilot operated two-position, four-way solenoid valve of the present invention having a first seal coupled to a valve stem.
Fig. 9 is a schematic structural diagram of a pilot-operated two-position four-way solenoid valve in a power-off state according to the present invention.
Fig. 10 is a schematic structural diagram of a pilot-operated two-position four-way solenoid valve in the energized state according to the present invention.
The corresponding component names for each reference number in the figures are: 1. a valve body; 11. a valve body; 12. a valve cover; 13. an end cap; 101. a valve cavity; 102. a piston chamber; 103. an electromagnetic control cavity; 104. a first flow passage; 105. a second flow passage; 106. a deflector aperture; 107. a third flow passage; 2. a valve core assembly; 21. a valve stem; 22. a piston member; 23. a piston seat; 24. a first seal; 25. a second seal; 211. a central bore; 221. a left cavity of the piston; 222. a right piston chamber; 223. a piston middle cavity; 241. a copper main body; 242. a rubber cover; 243. a first sealing surface; 244. a second sealing surface; 245. sliding sealing surface; 3. an electromagnetic control assembly; 31. a stationary core; 32. a movable iron core; 33. a magnetism isolating pipe; 34. an electromagnetic coil; 35. a first spring; 36. a second spring; 311. an upper valve port; 312. a lower valve port; 313. controlling the upper cavity; 314. controlling the lower cavity; 315. a through flow passage; 316. a first L-shaped flow passage; 317. a second L-shaped flow passage; 318. a guide hole; 321. an upper plug body; 322. a lower plug body; 323. and a guide post.
Description of the embodiments
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Referring to fig. 1 to 10, the present invention provides a pilot-operated two-position four-way solenoid valve, which comprises a valve body 1, a valve core assembly 2 and an electromagnetic control assembly 3.
Referring to fig. 1, a valve cavity 101, a piston cavity 102, an electromagnetic control cavity 103, and a port P, a port B, a port a, and a port E, which are all communicated with the valve cavity 101, are provided in the valve body 1, wherein the port P is a pressure port, the port B and the port a are outlets, and the port E is a discharge port. The port P is communicated with the electromagnetic control cavity 103 through a first runner 104 which is obliquely arranged, and the port E is communicated with the electromagnetic control cavity 103 through a second runner 105 which is obliquely arranged. The first flow passage 104 is used for pressurizing, the second flow passage 105 is used for decompressing, and the first flow passage 104 and the second flow passage 105 are arranged in the valve body 1, so that gas and liquid media can be applied to the valve body.
Referring to fig. 1 and 5, the valve body 1 includes a valve body 11 and a valve cover 12 which are in sealing connection, and the valve cover 12 and the valve body 11 are vertically arranged, so that the overall volume is reduced, and the installation is convenient. The valve cavity 101, the port P, the port B, the port A and the port E are all arranged on the valve body main body 11, the port P and the port E are positioned on one side of the valve cavity 101, and the port B and the port A are positioned on the other side of the valve cavity 101. The piston cavity 102 and the electromagnetic control cavity 103 are both arranged on the valve cover 12, the valve cavity 101 and the piston cavity 102 are positioned on the same central axis, and the electromagnetic control cavity 103 is positioned on the upper side of the piston cavity 102; an end cap 13 for blocking the valve chamber 101 is fixed to one side of the valve body 11.
Referring to fig. 1 and 5, the valve core assembly 2 includes a valve rod 21 penetrating through the valve cavity 101 and a piston member 22 connected with the valve rod 21 and slidably mounted in the piston cavity 102, where the valve rod 21 can be driven by the piston member 22 to move left and right, so as to control the on-off of the four connection ports. The piston member 22 is formed with a left piston chamber 221 and a right piston chamber 222 on both sides, respectively, and the sliding of the piston member 22 is controlled by a force difference between the left piston chamber 221 and the right piston chamber 222. The left piston cavity 221 is always communicated with the port P through the valve rod 21, namely the port P is always communicated with the left piston cavity 221 through a central hole 211 in the valve rod 21, and the right piston cavity 222 is communicated with the electromagnetic control cavity 103.
Referring to fig. 5 and 6, the piston member 22 is formed with a piston intermediate chamber 223 on the outer side of the middle portion, and the piston intermediate chamber 223 is always communicated with the E port through the third flow passage 107 in the valve body 1. In this way, the piston middle cavity 223 is always communicated with the discharge port E through the third flow passage 107, so that the piston member can be ensured not to bear the influence of additional pressure, and the piston middle cavity can be moved more reliably, and the use is more stable and reliable.
Referring to fig. 5 and 6, a piston seat 23 is installed between the valve chamber 101 and the piston chamber 102, the valve rod 21 passes through the piston seat 23, wherein a piston left chamber 221 is located in the piston seat 23, a piston middle chamber 223 is located between the piston seat 23 and the piston member 22, and a piston right chamber 222 is located in the piston chamber 102; the cross-sectional area of the left piston chamber 221 is smaller than that of the right piston chamber 222, i.e. under equal pressure, the right side of the piston member 22 is stressed more than the left side thereof, and the piston member 22 moves toward the left piston chamber 221.
Referring to fig. 5 and 7, the valve rod 21 is provided with a first sealing member 24 at a position corresponding to the opening B, and is provided with a second sealing member 25 at a position corresponding to the opening a, and the valve rod drives two sealing members to change the on-off of the four connection ports. In order to simplify the structure, the first sealing element 24 and the second sealing element 25 are identical in structure and symmetrically arranged, and both the first sealing element 24 and the second sealing element 25 comprise a copper main body 241 sleeved on the valve rod 21 and a rubber covering piece 242 coated on the copper main body 241, so that the copper main body 241 and the rubber covering piece 242 can be fixedly connected through a plastic mold and an adhesive. The rubber covering piece 242 has a first sealing surface 243 on one side, a second sealing surface 244 on the other side, and a sliding sealing surface 245 with a V-shaped structure on the inner side, wherein the sliding sealing surface is in sliding sealing connection with the valve rod and has the maximum pressure, and the larger the V-shaped expansion, the better the sliding sealing effect.
The existing pneumatic two-position four-way solenoid valve has a simple sealing structure, and can completely play a role in sealing and moving by an O-shaped ring or a V-shaped ring sleeved on a valve rod. Referring to fig. 7 and 8, the electromagnetic valve of the present invention needs to adapt to gas and liquid, and needs to improve the sealing structure, and the sealing structure is installed by adopting an integrally wrapped sealing member to move inwards along the valve rod, and the sliding sealing surface 245 in the sealing member just tightly wraps the valve rod step, so that the sealing member is ensured not to swing, and is ensured to be sealed with the valve rod well; the valve rod and the sealing piece are good in stability after being assembled, so that the sealing surfaces on two sides can be guaranteed to be smooth, the valve rod is not influenced by external force, and the valve rod and the valve port have good sealing effect after moving; after the sealing element moves or is influenced by medium pressure, the integral wrapping type design can increase the overall strength, and the structure is not thin, so that the sealing element is stable and reliable to use.
Referring to fig. 1 and 2, the electromagnetic control assembly 3 is installed in the electromagnetic control chamber 103 for controlling either one of the first and second flow passages 104 and 105 to communicate with the right piston chamber 222 and the other to disconnect from the right piston chamber 222.
Referring to fig. 2 and 3, the electromagnetic control assembly 3 includes a stationary core 31 and a slidable movable core 32 mounted within an electromagnetic control chamber 103; the stationary core 31 is provided with an upper valve port 311 communicating with the second flow passage 105 at an upper end and a lower valve port 312 communicating with the first flow passage 104 at a lower end; the movable iron core 32 is provided with an upper plug 321 for opening and closing the upper valve port 311 and a lower plug 322 for opening and closing the lower valve port 312, and the upper plug 321 and the lower plug 322 are linked to enable one valve port to be always opened and the other valve port to be closed by the two plugs. The structure adopts the cooperation of the stationary core 31 and the movable core 32 to realize the state that two valve ports are opened one by one and closed one, the design is ingenious, and the feasibility of the structure is ensured.
Referring to fig. 2 and 3, upper and lower sides of the stationary core 31 are respectively formed with a control upper chamber 313 and a control lower chamber 314, the control upper chamber 313 is communicated with the control lower chamber 314 through a through flow passage 315, and the control lower chamber 314 is communicated with the piston right chamber 222 through a pilot hole 106; a first L-shaped flow passage 316 and a second L-shaped flow passage 317 are provided on one side of the stationary core 31, the second flow passage 105, the first L-shaped flow passage 316, the upper valve port 311 and the control upper chamber 313 are sequentially communicated, and the first flow passage 104, the second L-shaped flow passage 317, the lower valve port 312 and the control lower chamber 314 are sequentially communicated.
Referring to fig. 2 to 4, the upper plug body 321 and the lower plug body 322 are connected through symmetrically arranged guide posts 323, the guide posts 323 pass through the stationary core 31, and guide holes 318 adapted to the guide posts 323 are formed in the stationary core 31. This structure ensures that the upper plug 321 and the lower plug 322 are linked, so that one valve port is always opened and the other valve port is closed by both plugs.
Referring to fig. 1 and 2, the electromagnetic control assembly 3 further includes a magnetism isolating tube 33 and an electromagnetic coil 34 mounted outside the magnetism isolating tube 33, the movable iron core 32 is slidably mounted in the magnetism isolating tube 33, a first spring 35 is mounted between the movable iron core 32 and the magnetism isolating tube 33, and a second spring 36 is mounted between the lower plug body 322 and the bottom wall of the electromagnetic control cavity 103; in the power-off state, under the action of the two springs, the upper plug body 321 seals the upper valve port 311, the lower plug body 322 opens the lower valve port 312, the port P is communicated with the right cavity 222 of the piston through the first flow passage 104, and the port E is disconnected with the right cavity 222 of the piston; the valve rod 21 is positioned at the left limit, the port P is communicated with the port A, and the port B is communicated with the port E under the action of two sealing elements; in the energized state, the valve rod 21 is in the right limit, the port P is communicated with the port B, and the port A is communicated with the port E.
The pilot type two-position four-way electromagnetic valve is used as follows.
Referring to fig. 9, in the coil power-off state, under the action of two springs, the movable iron core 32 is located at the lower side, the upper plug 321 seals the upper valve port 311, the lower plug 322 opens the lower valve port 312, at this time, the port P is communicated with the right piston cavity 222 through the first flow channel 104, the port P is communicated with the left piston cavity 221 through the central hole 211, and because the cross-sectional area of the left piston cavity 221 is smaller than that of the right piston cavity 222, i.e. under the same pressure, the right side of the piston member 22 is stressed more than the left side thereof, the piston member 22 moves towards the left piston cavity 221, so that the valve rod 21 drives the two sealing members to abut against the left side wall surface, at this time, the fluid at the port P flows to the port a, and the ports B and E are in the conducting state.
Referring to fig. 10, in the state of energizing the coil, under the action of electromagnetic force, the movable iron core 32 slides upwards to be located at the upper side, the upper plug body 321 opens the upper valve port 311, the lower plug body 322 plugs the lower valve port 312, at this time, the piston right cavity 222 is communicated with the E port for pressure relief, because the P port is always communicated with the piston left cavity 221, the pressure of the piston left cavity 221 is greater than that of the piston right cavity 222, the piston member 22 moves towards the piston right cavity 222, so that the valve rod 21 drives the two sealing members to abut against the right side wall surface, at this time, fluid at the P port flows to the B port, and the a port and the E port are in a conducting state.
According to the pilot-operated two-position four-way electromagnetic valve provided by the embodiment, the P port can be communicated with the right cavity of the piston through the first flow passage to pressurize the right cavity of the piston, the E port can be communicated with the right cavity of the piston through the second flow passage to relieve pressure of the right cavity of the piston, and the electromagnetic control mechanism controls the first flow passage or the second flow passage to be communicated with the right cavity of the piston, so that the left and right movement of the valve rod assembly is controlled, the flow passage can be switched only by controlling the pressure of the right cavity of the piston during control, the control process is simpler, and the control process is more stable and reliable; in addition, the middle cavity of the piston is always communicated with the E port through the third flow passage, so that the piston member is ensured not to bear additional pressure, and the piston member moves more stably and reliably; the second flow channel is a pressure relief flow channel, and the pressure relief flow channel is arranged in the valve body and is directly communicated with the E port for pressure relief, so that the valve can be used for gas and liquid media in general and the universality is improved; the sliding sealing surface of the sealing element tightly wraps the valve rod step, so that the sealing element can not swing, can be perfectly sealed with the valve rod, can ensure that the sealing surfaces on two sides are smooth, can increase the overall strength, and is stable and reliable to use.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (10)
1. A pilot-operated two-position four-way solenoid valve, comprising:
the valve comprises a valve body (1), wherein a valve cavity (101), a piston cavity (102) and an electromagnetic control cavity (103) which are sequentially communicated are arranged in the valve body, and a P port, a B port, an A port and an E port which are communicated with the valve cavity (101); the port P is communicated with the electromagnetic control cavity (103) through a first flow passage (104), and the port E is communicated with the electromagnetic control cavity (103) through a second flow passage (105);
the valve core assembly (2) comprises a valve rod (21) penetrating through the valve cavity (101) and a piston piece (22) connected with the valve rod (21) and slidably installed in the piston cavity (102), a left piston cavity (221) and a right piston cavity (222) are respectively formed on two sides of the piston piece (22), the left piston cavity (221) is always communicated with the P port, and the right piston cavity (222) is communicated with the electromagnetic control cavity (103);
and the electromagnetic control assembly (3) is arranged in the electromagnetic control cavity (103) and is used for controlling any one of the first runner (104) and the second runner (105) to be communicated with the right piston cavity (222), and the other runner is disconnected with the right piston cavity (222).
2. The pilot-operated two-position four-way solenoid valve according to claim 1, wherein: the electromagnetic control assembly (3) comprises a stationary core (31) and a slidable movable core (32) which are arranged in the electromagnetic control cavity (103); an upper valve port (311) communicated with the second flow passage (105) is arranged at the upper end of the stationary core (31), and a lower valve port (312) communicated with the first flow passage (104) is arranged at the lower end of the stationary core; an upper plug body (321) for opening and closing the upper valve port (311) and a lower plug body (322) for opening and closing the lower valve port (312) are arranged on the movable iron core (32), and the upper plug body (321) and the lower plug body (322) are linked to enable one valve port to be always opened and the other valve port to be closed by the two plug bodies.
3. The pilot-operated two-position four-way solenoid valve according to claim 2, wherein: a control upper cavity (313) and a control lower cavity (314) are respectively formed on the upper side and the lower side of the stationary core (31), the control upper cavity (313) is communicated with the control lower cavity (314) through a through flow passage (315), and the control lower cavity (314) is communicated with the right piston cavity (222) through a diversion hole (106);
one side of the stationary core (31) is provided with a first L-shaped flow passage (316) and a second L-shaped flow passage (317), the second flow passage (105), the first L-shaped flow passage (316), the upper valve port (311) and the control upper cavity (313) are sequentially conducted, and the first flow passage (104), the second L-shaped flow passage (317), the lower valve port (312) and the control lower cavity (314) are sequentially conducted.
4. The pilot-operated two-position four-way solenoid valve according to claim 2, wherein: the upper plug body (321) is connected with the lower plug body (322) through symmetrically arranged guide posts (323), the guide posts (323) penetrate through the static core (31), and guide holes (318) matched with the guide posts (323) are formed in the static core (31).
5. The pilot-operated two-position four-way solenoid valve according to claim 2, wherein: the electromagnetic control assembly (3) further comprises a magnetism isolating pipe (33) and an electromagnetic coil (34) arranged on the outer side of the magnetism isolating pipe (33), the movable iron core (32) is slidably arranged in the magnetism isolating pipe (33), a first spring (35) is arranged between the movable iron core (32) and the magnetism isolating pipe (33), and a second spring (36) is arranged between the lower plug body (322) and the bottom wall of the electromagnetic control cavity (103);
when in a power-off state, under the action of two springs, the upper plug body (321) is used for blocking the upper valve port (311), the lower plug body (322) is used for opening the lower valve port (312), the P port is communicated with the right cavity (222) of the piston through the first flow passage (104), and the E port is disconnected with the right cavity (222) of the piston.
6. The pilot-operated two-position four-way solenoid valve according to claim 1, wherein: the piston member (22) is formed with a piston middle cavity (223) at the outer side of the middle part, and the piston middle cavity (223) is always communicated with the E port through a third flow passage (107).
7. The pilot-operated two-position, four-way solenoid valve as set forth in claim 6, wherein: a piston seat (23) is arranged between the valve cavity (101) and the piston cavity (102), the left piston cavity (221) is positioned in the piston seat (23), the middle piston cavity (223) is positioned between the piston seat (23) and the piston piece (22), and the right piston cavity (222) is positioned in the piston cavity (102); the cross-sectional area of the left piston cavity (221) is smaller than that of the right piston cavity (222), and the piston piece (22) moves towards the left piston cavity (221) under the same pressure.
8. The pilot-operated two-position four-way solenoid valve according to claim 1, wherein: the valve body (1) comprises a valve body main body (11) and a valve cover (12) which are in sealing connection, the valve cover (12) is vertically arranged with the valve body main body (11), the valve cavity (101), the P port, the B port, the A port and the E port are all arranged on the valve body main body (11), the piston cavity (102) and the electromagnetic control cavity (103) are all arranged on the valve cover (12), the valve cavity (101) and the piston cavity (102) are positioned on the same central axis, and the electromagnetic control cavity (103) is positioned on the upper side of the piston cavity (102); one side of the valve body main body (11) is fixed with an end cover (13) for sealing the valve cavity (101).
9. The pilot-operated two-position four-way solenoid valve according to claim 1, wherein: the valve rod (21) is provided with a first sealing element (24) at a position corresponding to the port B, and is provided with a second sealing element (25) at a position corresponding to the port A; the first sealing element (24) and the second sealing element (25) are identical in structure and symmetrically arranged, each sealing element comprises a copper main body (241) sleeved on the valve rod (21) and a rubber covering piece (242) coated on the copper main body (241), one side of the rubber covering piece (242) is provided with a first sealing surface (243), the other side of the rubber covering piece is provided with a second sealing surface (244), and the inner side of the rubber covering piece is provided with a sliding sealing surface (245) with a V-shaped structure.
10. The pilot-operated two-position, four-way solenoid valve as set forth in claim 9, wherein: the port P is a pressure port, the port B and the port A are outlets, the port E is a discharge port, and the port P is always communicated with the left piston cavity (221) through a central hole (211) in the valve rod (21); in the power-off state, the valve rod (21) is in left limit, the port P is communicated with the port A, and the port B is communicated with the port E under the action of two sealing elements; and in the electrified state, the valve rod (21) is in right limit, the port P is communicated with the port B, and the port A is communicated with the port E.
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| CN202310265580.6A CN115978227B (en) | 2023-03-20 | 2023-03-20 | Pilot-operated two-position four-way solenoid valve |
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| CN202310265580.6A CN115978227B (en) | 2023-03-20 | 2023-03-20 | Pilot-operated two-position four-way solenoid valve |
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| CN115978227B true CN115978227B (en) | 2023-05-26 |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5332430U (en) * | 1976-08-26 | 1978-03-20 | ||
| DE19509578A1 (en) * | 1995-03-16 | 1996-09-19 | Bosch Gmbh Robert | Pneumatic directional valve with longitudinal slider in housing |
| US6325102B1 (en) * | 1999-04-27 | 2001-12-04 | Smc Corporation | Servo driving pilot-type solenoid valve |
| JP2005076576A (en) * | 2003-09-02 | 2005-03-24 | Nabtesco Corp | Spool valve for vessel |
| JP2012219861A (en) * | 2011-04-05 | 2012-11-12 | Ckd Corp | Pilot type solenoid valve |
| CN204114235U (en) * | 2014-10-09 | 2015-01-21 | 上海邦业气动液压件有限公司 | A kind of leading type two-position-five-way solenoid valve |
| CN204493795U (en) * | 2015-03-31 | 2015-07-22 | 宁波赛维思机械有限公司 | Two four-way electromagnetic reversing valves |
| CN105370933A (en) * | 2015-11-20 | 2016-03-02 | 重庆山能仪表有限公司 | Unloading one-way valve |
| CN205298715U (en) * | 2015-11-27 | 2016-06-08 | 西安秦泰汽车配件有限公司 | Step -down surge damping valve that electromagnetism break -make is adjustable |
| CN207406824U (en) * | 2017-10-24 | 2018-05-25 | 宁波陈氏鑫光气动有限公司 | A kind of new two-position-five-way solenoid valve |
| CN109538773A (en) * | 2018-12-13 | 2019-03-29 | 西安航天动力研究所 | A kind of high pressure pilot-operated type latching valve |
| CN110285234A (en) * | 2019-05-31 | 2019-09-27 | 余姚市三力信电磁阀有限公司 | A kind of pressure balance type two-position three way magnetic valve |
| CN210178669U (en) * | 2019-05-27 | 2020-03-24 | 宁波市奉化区诺鑫气动工程有限公司 | Two-position five-way explosion-proof valve |
| CN112855986A (en) * | 2020-12-31 | 2021-05-28 | 浙江亿太诺气动科技有限公司 | Multi-needle valve terminal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5938839B2 (en) * | 2014-02-10 | 2016-06-22 | Smc株式会社 | Solenoid pilot spool valve |
-
2023
- 2023-03-20 CN CN202310265580.6A patent/CN115978227B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5332430U (en) * | 1976-08-26 | 1978-03-20 | ||
| DE19509578A1 (en) * | 1995-03-16 | 1996-09-19 | Bosch Gmbh Robert | Pneumatic directional valve with longitudinal slider in housing |
| US6325102B1 (en) * | 1999-04-27 | 2001-12-04 | Smc Corporation | Servo driving pilot-type solenoid valve |
| JP2005076576A (en) * | 2003-09-02 | 2005-03-24 | Nabtesco Corp | Spool valve for vessel |
| JP2012219861A (en) * | 2011-04-05 | 2012-11-12 | Ckd Corp | Pilot type solenoid valve |
| CN204114235U (en) * | 2014-10-09 | 2015-01-21 | 上海邦业气动液压件有限公司 | A kind of leading type two-position-five-way solenoid valve |
| CN204493795U (en) * | 2015-03-31 | 2015-07-22 | 宁波赛维思机械有限公司 | Two four-way electromagnetic reversing valves |
| CN105370933A (en) * | 2015-11-20 | 2016-03-02 | 重庆山能仪表有限公司 | Unloading one-way valve |
| CN205298715U (en) * | 2015-11-27 | 2016-06-08 | 西安秦泰汽车配件有限公司 | Step -down surge damping valve that electromagnetism break -make is adjustable |
| CN207406824U (en) * | 2017-10-24 | 2018-05-25 | 宁波陈氏鑫光气动有限公司 | A kind of new two-position-five-way solenoid valve |
| CN109538773A (en) * | 2018-12-13 | 2019-03-29 | 西安航天动力研究所 | A kind of high pressure pilot-operated type latching valve |
| CN210178669U (en) * | 2019-05-27 | 2020-03-24 | 宁波市奉化区诺鑫气动工程有限公司 | Two-position five-way explosion-proof valve |
| CN110285234A (en) * | 2019-05-31 | 2019-09-27 | 余姚市三力信电磁阀有限公司 | A kind of pressure balance type two-position three way magnetic valve |
| CN112855986A (en) * | 2020-12-31 | 2021-05-28 | 浙江亿太诺气动科技有限公司 | Multi-needle valve terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115978227A (en) | 2023-04-18 |
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