CN210920202U - Pressure balance type two-position three-way electromagnetic valve - Google Patents
Pressure balance type two-position three-way electromagnetic valve Download PDFInfo
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- CN210920202U CN210920202U CN201920811463.4U CN201920811463U CN210920202U CN 210920202 U CN210920202 U CN 210920202U CN 201920811463 U CN201920811463 U CN 201920811463U CN 210920202 U CN210920202 U CN 210920202U
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- 230000005389 magnetism Effects 0.000 claims abstract description 45
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- 238000001746 injection moulding Methods 0.000 claims description 7
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- 239000004429 Calibre Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
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- 239000003921 oil Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
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- 238000005488 sandblasting Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a pressure balance type two-position three-way solenoid valve relates to solenoid valve technical field, include: the valve comprises a valve body, a piston assembly, a coil magnetism isolating assembly, a movable sealing assembly and a valve port device, wherein the coil magnetism isolating assembly is arranged at the upper part of the valve body, a piston sealing cavity, a first interface, a second interface and a third interface are arranged in the valve body, the piston assembly comprises a movable iron core, an iron core spring, a piston spring and a piston body, one end of the movable iron core is movably arranged in the coil magnetism isolating assembly, and the other end of the movable iron core sequentially penetrates through the movable sealing assembly, the valve port device and the piston body and is fixedly connected with the piston body; the movable sealing assembly and the valve port device are arranged in the piston sealing cavity and divide the piston sealing cavity into an upper cavity and a lower cavity, and the top of the piston sealing cavity is connected and sealed with the valve body through a magnetism isolating pipe base at the bottom of the magnetism isolating pipe, so that the two-position three-way electromagnetic valve in a liquid medium environment can be well large in caliber and is safe and reliable.
Description
Technical Field
The utility model belongs to the technical field of the solenoid valve technique and specifically relates to a pressure balance formula two-position three way solenoid valve.
Background
The two-position three-way electromagnetic valve is mainly used for closing or connecting media, wherein a valve core of the two-position valve has two working positions, and the three-way valve refers to a valve body with three outlets, which is different from other electromagnetic valves. The two-position three-way electromagnetic valve is different from a double-seat valve in that when the distance between the valve core of the two-position three-way electromagnetic valve and one valve seat is increased, the distance between the valve core of the two-position three-way electromagnetic valve and the other valve seat is reduced, and the distances between the two valve cores of the double-seat valve and the valve seats are simultaneously increased or reduced. In addition, the structure of the two-position three-way electromagnetic valve is greatly different due to different purposes; in the prior art, a slightly larger-caliber two-position three-way electromagnetic valve mainly adopts a double-valve-seat structure and double-coil control, so that the valve is large in size, energy is not saved due to the two coils, and more parts are installed, and time is wasted.
The two-position three-way electromagnetic valve mainly comprises a reversing mechanism arranged in a valve body, wherein the reversing mechanism comprises an air inlet arranged at the upper part of the valve body, an air outlet arranged at the lower part of the valve body, a piston cavity arranged at the right part of the valve body, a piston arranged in the piston cavity, and a sealing ring embedded on the piston to form a piston body with a sealing structure; the piston body is sleeved on the small valve element at one end of the main valve element to form a movement sealing structure; the main valve core is provided with a valve cake, the valve cake and the valve body form a valve port, and the main valve core drives the valve cake to axially move along the axis of the main valve core so as to realize the reversing of the valve; the two-position three-way electromagnetic valve has higher power requirement on the electromagnetic coil of the electromagnetic valve, and can not realize the conversion use of various functional valves.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an above-mentioned defect to prior art exists, especially provide a pressure balance formula two-position three way solenoid valve, it is less to have solved the current two-position three way solenoid valve bore that is arranged in the liquid medium environment to the overall dimension is great, requires higher scheduling problem to solenoid's power.
In order to solve the technical problem, the utility model provides a pressure balance type two-position three-way solenoid valve, include: the valve comprises a valve body, a piston assembly, a coil magnetism isolating assembly, a movable sealing assembly and a valve port device, wherein the coil magnetism isolating assembly is arranged at the upper part of the valve body, a piston sealing cavity, a first interface, a second interface and a third interface are arranged in the valve body, the piston assembly comprises a movable iron core, an iron core spring, a piston spring and a piston body, one end of the movable iron core is movably arranged in the coil magnetism isolating assembly, and the other end of the movable iron core sequentially penetrates through the movable sealing assembly, the valve port device and the piston body and is fixedly connected with the piston body;
the movable sealing assembly and the valve port device are arranged in the piston sealing cavity and divide the piston sealing cavity into an upper cavity and a lower cavity, the piston body is positioned in the lower cavity, the movable sealing assembly is used for compressing and fixing the valve port device, the valve port device is provided with a communication valve port positioned on the side part of the valve port device and an upper valve port positioned at the bottom of the valve port device, the communication valve port is communicated with the first interface, the third interface is communicated with the bottom of the lower cavity through the lower valve port, and the second interface is communicated with the side part of the lower cavity; the piston spring is arranged between the piston body and the valve port device, and the piston body is used for sealing the upper valve port and the lower valve port;
still be equipped with balanced connecting hole in the valve body and be used for communicateing third interface and last cavity, the coil separates the magnetism subassembly and includes magnetism barrier pipe and the electromagnetic means of cover outside the magnetism barrier pipe, movable iron core movably sets up in magnetism barrier pipe, iron core spring one end and movable iron core top butt, the iron core spring other end and magnetism barrier pipe inner chamber top butt, the magnetism barrier pipe base that magnetism barrier pipe bottom was passed through at piston seal chamber top is connected and is sealed with the valve body, adopt above-mentioned technical scheme, can realize the heavy-calibre of two-position three way solenoid valve in the liquid medium environment well, and safe and reliable.
The valve body is also provided with a fabrication hole for processing the balance connecting hole, and the fabrication hole is sealed by a set screw coated with sealing glue.
Wherein, the piston body includes piston skeleton and sealing rubber, and piston skeleton upper portion and lower part all are equipped with the annular recess of moulding plastics that sets up sealing rubber.
The bottom of the upper valve port is provided with a protruding annular wall, the annular wall of the upper valve port corresponds to the position of the sealing rubber at the upper part of the piston framework, the top of the lower valve port is provided with a protruding annular wall, and the annular wall of the lower valve port corresponds to the position of the sealing rubber at the lower part of the piston framework.
The movable sealing assembly comprises a piston pressing plate and an upper pressing plate, the piston pressing plate is arranged at the upper part of the valve port device, the piston pressing plate and the inner wall of a piston sealing cavity are sealed through a first sealing ring, and the piston pressing plate and the movable iron core are sealed through a second sealing ring; the piston pressing plate, the movable iron core and the second sealing ring are lubricated by silicone oil, so that the movable sealing is more reliable.
The upper pressure plate is used for pressing the piston pressure plate, the side wall of the upper pressure plate is also provided with a communicating opening, and the communicating opening is matched with the balance connecting hole, so that the upper cavity is communicated with the balance connecting hole; the number of the communication openings is four, and the communication openings are uniformly distributed on the side wall of the upper pressing plate in a surrounding mode, so that the balance connecting holes can be aligned more conveniently during installation.
Wherein, the magnetism proof pipe top is equipped with the external screw thread and wears out electromagnetic means, and the magnetism proof pipe passes through the nut to be connected to be fixed on electromagnetic means, and magnetism proof pipe base outer wall is equipped with the external screw thread, and piston seal chamber top inner wall is equipped with the internal thread, and magnetism proof pipe passes through threaded connection with the valve body to be fixed, seals through the third sealing washer between magnetism proof pipe base and the piston seal chamber.
Drawings
Fig. 1 is a sectional view 1 of a pressure balance type two-position three-way solenoid valve of the present invention;
FIG. 2 is a perspective view of the piston assembly and the movable seal assembly of the present invention;
FIG. 3 is an internal structure view of the valve body of the present invention;
FIG. 4 is a schematic diagram of a piston assembly according to the present invention;
FIG. 5 is a structural diagram of the upper platen of the present invention;
FIG. 6 is a view showing the structure of the valve port device of the present invention;
fig. 7 is a cross-sectional view 2 of the pressure-balanced two-position three-way solenoid valve of the present invention;
fig. 8 is a cross-sectional view 3 of the pressure-balanced two-position three-way solenoid valve of the present invention;
in the figure: 1 is a valve body; 2 is a piston assembly; 3 is a coil magnetism isolating component; 4 is a movable sealing component; 5 is a valve port device; 6 is a first sealing ring; 7 is a lower valve port; 8 is a second sealing ring; 9 is a third sealing ring; 11 is a first interface; 12 is a second interface; 13 is a third interface; 14 is a balance connecting hole; 15 is a fabrication hole; 16 is a movable iron core; 17 is an iron core spring; 18 is a piston spring; 19 is a piston body; 20 is a magnetism isolating pipe; 21 is an electromagnetic device; 22 is a piston pressure plate; 23 is an upper pressure plate; 24 is an upper valve port; 25 is a communicating valve port; 26 is a piston framework; 27 is sealing rubber; 31 is a piston seal cavity; 32 is a magnetic isolation tube base; 33 is an upper cavity; 34 is a lower cavity; and 35 is a communication opening.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The utility model discloses pressure balance formula two-position three way solenoid valve, as shown in figure 1, figure 2, figure 3, figure 4, figure 5, figure 6, figure 7 and figure 8, include: the valve comprises a valve body 1, a piston assembly 2, a coil magnetism isolating assembly 3, a movable sealing assembly 4 and a valve port device 5, wherein the coil magnetism isolating assembly 3 is arranged on the upper portion of the valve body 1, a piston sealing cavity 31, a first interface 11, a second interface 12 and a third interface 13 are arranged in the valve body 1, the piston assembly 2 comprises a movable iron core 16, an iron core spring 17, a piston spring 18 and a piston body 19, one end of the movable iron core 16 is movably arranged in the coil magnetism isolating assembly 3, and the other end of the movable iron core 16 sequentially penetrates through the movable sealing assembly 4, the valve port device 5 and the piston body 19 and is fixedly connected with the piston body 19;
as shown in fig. 8, the movable sealing assembly 4 and the valve port device 5 are disposed in the piston sealing cavity 31 and divide the piston sealing cavity 31 into an upper cavity 33 and a lower cavity 34, the piston body 19 is located in the lower cavity 34, the movable sealing assembly 4 is used for compressing and fixing the valve port device 5, the valve port device 5 is provided with a communication valve port 25 located on the side of the valve port device 5 and an upper valve port 24 located at the bottom of the valve port device 5, the communication valve port 25 is communicated with the first port 11, the third port 13 is communicated with the bottom of the lower cavity 34 through the lower valve port 7, and the second port 12 is communicated with the side of the lower cavity 34; the piston spring 18 is arranged between the piston body 19 and the valve port device 5, and the piston body 19 is used for sealing the upper valve port 24 and the lower valve port 7;
still be equipped with balanced connecting hole 14 in the valve body 1 and be used for communicateing third interface 13 and last cavity 33, coil separates magnetism subassembly 3 and includes magnetism-isolating pipe 20 and the electromagnetic means 21 of cover outside separating magnetism pipe 20, movable iron core 16 can movably set up in magnetism-isolating pipe 20, iron core spring 17 one end and the 16 top butt of movable iron core, iron core spring 17 other end and the 20 inner chamber tops butt of magnetism-isolating pipe, the sealed chamber 31 top of piston is connected and is sealed with valve body 1 through the magnetism-isolating pipe base 32 of magnetism-isolating pipe 20 bottom.
As shown in fig. 3, the valve body 1 is further provided with a fabrication hole 15 for processing the balance connection hole 14, and the fabrication hole 15 is sealed by a set screw coated with sealing glue; specifically, as shown in fig. 7 and 8, a balance connection hole 14 is formed in the valve body 1 to connect the upper cavity 33 and the third port 13, so that the pressure of the third port 13 is kept consistent with that of the upper cavity 33, a fabrication hole 15 is transversely formed in the side edge of the valve body 1, and a fabrication hole 15 is formed in the bottom of the valve body 1; the design of the balance connecting hole 14 enables the medium pressure on the upper cavity 33 and the lower cavity 34 to be the same, and can reduce the requirement on the spring force of the iron core spring 17 and the spring force of the piston spring 18, thereby greatly reducing the requirement on the coil power of the electromagnetic valve, facilitating the opening and closing of the two-position three-way electromagnetic valve, further keeping the drift diameters of the lower valve port 7 and the upper valve port 24 consistent, ensuring the pressure balance when the piston body 19 moves up and down, and facilitating the opening and closing of the valve.
The piston body 19 comprises a piston framework 26 and sealing rubber 27, and annular injection molding grooves provided with the sealing rubber 27 are formed in the upper part and the lower part of the piston framework 26; the bottom of the upper valve port 24 is provided with a protruding annular wall, the annular wall of the upper valve port 24 corresponds to the position of the sealing rubber 27 at the upper part of the piston framework 26, the top of the lower valve port 7 is provided with a protruding annular wall, and the annular wall of the lower valve port 7 corresponds to the position of the sealing rubber 27 at the lower part of the piston framework 26; because the electromagnetic valve is in a long-time working state and the requirements on the service life and the sealing performance of the electromagnetic valve are influenced, the piston body 19 adopts an injection molding process, and the sealing rubber 27 is injected into the annular injection molding groove in the piston framework 26 for molding under high pressure to form a whole; the annular injection molding groove at the sealing position of the piston framework 26 adopts an inner step design, the attaching surface area of the annular injection molding groove and the sealing rubber 27 is increased, the annular injection molding groove is treated by adopting the processes of cleaning, drying, sand blasting, coating special sealing glue, vulcanizing and the like, the reliability and the stability of the rubber sealing surface of the sealing rubber 27 are greatly improved, the deformation and the damage of the rubber sealing surface of the sealing rubber 27 under the long-time work are avoided, and the service life of the electromagnetic valve is prolonged.
When the electromagnetic device 21 is electrified, the piston assembly 2 is lifted upwards under the action of electromagnetic force, the upper sealing end of the piston body 19, namely the sealing rubber 27 at the upper part is tightly attached to the upper valve port 24 to generate deformation sealing, and the upper valve port 24 is closed; wherein, in order to keep the piston body 19 in the upward attaching state, a sufficient gap should be left between the movable iron core 16 and the static iron core on the upper part of the magnetism isolating pipe 20; the piston body 19 and the upper valve port 24 are prevented from being deformed without stress because the movable iron core 16 and the static iron core are attracted, and sealing fails; because the movable iron core 16 and the static iron core are not attracted, the alternating current coil can generate noise, and in order to prevent the noise influence, the coil adopts a direct current coil, and the alternating current coil can be connected with a rectification junction box for conversion.
As shown in fig. 2, the movable sealing assembly 4 includes a piston pressing plate 22 and an upper pressing plate 23, the piston pressing plate 22 is disposed on the upper portion of the valve port device 5, the piston pressing plate 22 is sealed with the inner wall of the piston sealing cavity 31 by a first sealing ring 6, and the piston pressing plate 22 is sealed with the movable iron core 16 by a second sealing ring 8; the piston pressing plate 22, the movable iron core 16 and the second sealing ring 8 are lubricated by silicon oil, the piston pressing plate 22 and the movable iron core 16 adopt a sliding sealing design, the second sealing ring 8 is placed between the sliding surface of the piston pressing plate 22 and the sliding surface of the movable iron core 16, two sides of the second sealing ring 8 are extruded and deformed to realize sealing, the sliding sealing enables the upper cavity 33 and the lower cavity 34 to be sealed and isolated, flowing media such as liquid media like water are ensured, and no leakage can be ensured between the upper cavity 33 and the lower cavity 34 under the working pressure; the sliding seal design makes piston assembly 2 produce the solenoid valve power at electromagnetic means 21 circular telegram and upwards promote piston assembly 2, resets under the outage condition under the spring force and the dead weight condition of iron core spring 17 and piston spring 18 and can both smooth and easy up-and-down motion and leak-free, and further, the material that the activity iron core 16 chooseed for use is soft magnetic material, and sliding seal department part need grind the polishing and handle, roughness Ra0.4.
The upper pressing plate 23 is used for pressing the piston pressing plate 22, a communication opening 35 is further formed in the side wall of the upper pressing plate 23, and the communication opening 35 is matched with the balance connecting hole 14, so that the upper cavity 33 is communicated with the balance connecting hole 14; the number of the communication openings 35 is four, and the communication openings are uniformly distributed around the side wall of the upper pressure plate 23.
The top of the magnetism isolating pipe 20 is provided with an external thread and penetrates out of the electromagnetic device 21, the magnetism isolating pipe 20 is connected and fixed on the electromagnetic device 21 through a nut, the outer wall of the magnetism isolating pipe base 32 is provided with an external thread, the inner wall of the top of the piston sealing cavity 31 is provided with an internal thread, the magnetism isolating pipe 20 is fixed with the valve body 1 through threaded connection, and the magnetism isolating pipe base 32 and the piston sealing cavity 31 are sealed through a third sealing ring 9.
The assembly process is as follows, firstly, the movable iron core 16 passes through the upper pressure plate 23 and the piston pressure plate 22; then the piston spring 18 is installed through the upper valve port 24 of the valve port device 5, and finally the piston spring is in threaded connection with the piston body 19, the threads need to be coated with loctite 326 sealing glue, the piston body 19 is ensured to be perpendicular to the center of the movable iron core 16, and then the piston spring is placed aside for curing the glue, so that looseness and leakage under the long-time working condition are prevented; the fabrication hole 15 on the valve body 1 needs to be sealed by a set screw, and the thread part is coated with sealing glue for fixation to prevent leakage.
When the two-position three-way electromagnetic valve of the present embodiment is used, it is used as a normally closed electromagnetic valve, as shown in fig. 7 and 8: the medium enters through the third port 13, namely the third port 13 is a pressure supply port, one path of medium reaches the lower valve port 7, and the other path of medium reaches the upper cavity 33 through the balance connecting hole 14; two paths of medium pressure are kept consistent, because the areas of the lower valve port 7 and the upper valve port 24 are equal, the medium pressure counteracts the pressure above and below the piston body 19, when the electromagnetic device 21 is powered off, the upper valve port 24 is opened, the lower valve port 7 is closed, the electromagnetic valve is in a normally closed state under the action of the combined force of the spring force of the iron core spring 17 and the piston spring 18 and the gravity of the piston body 19, and the medium can reach the first interface 11 from the second interface 12 through the upper valve port 24; when the valve is powered on, under the action of electromagnetic force, the piston body 19 is lifted upwards, the lower valve port 7 is opened, the upper valve port 24 is closed, and a medium flows from the third port 13 to the second port 12 through the lower valve port 7.
As a normally open type electromagnetic valve: when the electromagnetic device 21 is powered off, because the combined force of the spring force of the iron core spring 17 and the piston spring 18 and the gravity of the piston body 19 acts downwards, the upper valve port 24 is opened, the lower valve port 7 is closed, and at this time, the medium flows from the first interface 11 to the second interface 12 through the upper valve port 24, and the electromagnetic valve is in an open state; when the valve is powered on, under the action of electromagnetic force, the piston body 19 is lifted upwards, the upper valve port 24 is closed, the lower valve port 7 is opened, and a medium passes through the lower valve port 7 from the second port 12 to the third port 13.
The reversing type electromagnetic valve is used as follows: when the electromagnetic device 21 is powered off, the upper valve port 24 is opened and the lower valve port 7 is closed under the downward action of the combined force of the spring force of the iron core spring 17 and the piston spring 18 and the gravity of the piston body 19, and then the medium flows from the second port 12 to the first port 11 through the upper valve port 24; when the electromagnetic device 21 is electrified, the piston body 19 is lifted, the upper valve port 24 is closed, the lower valve port 7 is opened, and the medium passes from the second port 12 to the third port 13 through the lower valve port 7, so that the reversing is completed.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A pressure balance type two-position three-way electromagnetic valve is characterized by comprising: the coil magnetic isolation valve comprises a valve body (1), a piston assembly (2), a coil magnetic isolation assembly (3), a movable sealing assembly (4) and a valve port device (5), wherein the coil magnetic isolation assembly (3) is arranged on the upper portion of the valve body (1), a piston sealing cavity (31), a first interface (11), a second interface (12) and a third interface (13) are arranged in the valve body (1), the piston assembly (2) comprises a movable iron core (16), an iron core spring (17), a piston spring (18) and a piston body (19), one end of the movable iron core (16) is movably arranged in the coil magnetic isolation assembly (3), and the other end of the movable iron core (16) sequentially penetrates through the movable sealing assembly (4), the valve port device (5) and the piston body (19) and is fixedly connected with the piston body (19);
the movable sealing assembly (4) and the valve port device (5) are arranged in the piston sealing cavity (31) and divide the piston sealing cavity (31) into an upper cavity (33) and a lower cavity (34), the piston body (19) is positioned in the lower cavity (34), the movable sealing assembly (4) is used for compressing and fixing the valve port device (5), a communication valve port (25) positioned on the side part of the valve port device (5) and an upper valve port (24) positioned at the bottom part of the valve port device (5) are arranged on the valve port device (5), the communication valve port (25) is communicated with the first interface (11), the third interface (13) is communicated with the bottom part of the lower cavity (34) through the lower valve port (7), and the second interface (12) is communicated with the side part of the lower cavity (34); the piston spring (18) is arranged between the piston body (19) and the valve port device (5), and the piston body (19) is used for sealing the upper valve port (24) and the lower valve port (7);
still be equipped with balanced connecting hole (14) in valve body (1) and be used for the intercommunication third interface (13) and last cavity (33), coil separates magnetism subassembly (3) and establishes including magnetism tube (20) and cover separate magnetism tub outer electromagnetic means (21) of (20), movable iron core (16) mobile setting is in magnetism tube (20), iron core spring (17) one end with movable iron core (16) top butt, iron core spring (17) other end with separate magnetism tube (20) inner chamber top butt, piston seal chamber (31) top is connected and is sealed with valve body (1) through magnetism tube base (32) of separating magnetism tube (20) bottom.
2. The pressure balance type two-position three-way electromagnetic valve according to claim 1, wherein the valve body (1) is further provided with a fabrication hole (15) for processing the balance connecting hole (14), and the fabrication hole (15) is sealed by a set screw coated with sealing glue.
3. The pressure balance type two-position three-way electromagnetic valve according to claim 1, wherein the piston body (19) comprises a piston framework (26) and a sealing rubber (27), and the upper part and the lower part of the piston framework (26) are provided with annular injection molding grooves for arranging the sealing rubber (27).
4. The pressure balance type two-position three-way electromagnetic valve according to claim 3, wherein the bottom of the upper valve port (24) is provided with a protruding annular wall, the annular wall of the upper valve port (24) corresponds to the position of the sealing rubber (27) on the upper part of the piston frame (26), the top of the lower valve port (7) is provided with a protruding annular wall, and the annular wall of the lower valve port (7) corresponds to the position of the sealing rubber (27) on the lower part of the piston frame (26).
5. The pressure balance type two-position three-way electromagnetic valve according to claim 4, wherein the movable sealing assembly (4) comprises a piston pressing plate (22) and an upper pressing plate (23), the piston pressing plate (22) is disposed on the upper portion of the valve port device (5), the piston pressing plate (22) and the inner wall of the piston sealing cavity (31) are sealed through a first sealing ring (6), and the piston pressing plate (22) and the movable iron core (16) are sealed through a second sealing ring (8).
6. The pressure balance type two-position three-way electromagnetic valve according to claim 5, wherein the piston pressure plate (22), the movable iron core (16) and the second sealing ring (8) are lubricated by silicone oil.
7. The pressure balance type two-position three-way electromagnetic valve according to claim 5, wherein the upper pressure plate (23) is used for pressing the piston pressure plate (22), a communication opening (35) is further formed in the side wall of the upper pressure plate (23), and the communication opening (35) is matched with the balance connecting hole (14) so that the upper cavity (33) is communicated with the balance connecting hole (14).
8. The pressure balanced two-position three-way solenoid valve according to claim 7, wherein the number of the communication openings (35) is four, and the communication openings are uniformly distributed around the side wall of the upper pressure plate (23).
9. The pressure balance type two-position three-way electromagnetic valve according to claim 1, wherein the top of the magnetism isolating pipe (20) is provided with an external thread and penetrates out of the electromagnetic device (21), the magnetism isolating pipe (20) is connected and fixed on the electromagnetic device (21) through a nut, the outer wall of the magnetism isolating pipe base (32) is provided with an external thread, the inner wall of the top of the piston sealing cavity (31) is provided with an internal thread, the magnetism isolating pipe (20) is connected and fixed with the valve body (1) through a thread, and the magnetism isolating pipe base (32) and the piston sealing cavity (31) are sealed through a third sealing ring (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920811463.4U CN210920202U (en) | 2019-05-31 | 2019-05-31 | Pressure balance type two-position three-way electromagnetic valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920811463.4U CN210920202U (en) | 2019-05-31 | 2019-05-31 | Pressure balance type two-position three-way electromagnetic valve |
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| CN210920202U true CN210920202U (en) | 2020-07-03 |
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| CN201920811463.4U Withdrawn - After Issue CN210920202U (en) | 2019-05-31 | 2019-05-31 | Pressure balance type two-position three-way electromagnetic valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112791298A (en) * | 2020-12-16 | 2021-05-14 | 济南三康环保科技有限公司 | Push type ozone gas suction device and gas taking method thereof |
| CN113294553A (en) * | 2021-05-21 | 2021-08-24 | 西安航天动力研究所 | Full-unloading disc type magnetic pole large-drift-diameter two-position three-way electromagnetic valve |
| CN113757439A (en) * | 2021-09-17 | 2021-12-07 | 西安航天动力研究所 | Plug-in type high-pressure unloading electromagnetic valve |
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2019
- 2019-05-31 CN CN201920811463.4U patent/CN210920202U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110285234B (en) * | 2019-05-31 | 2024-02-02 | 余姚市三力信电磁阀有限公司 | Pressure balance type two-position three-way electromagnetic valve |
| CN112791298A (en) * | 2020-12-16 | 2021-05-14 | 济南三康环保科技有限公司 | Push type ozone gas suction device and gas taking method thereof |
| CN113294553A (en) * | 2021-05-21 | 2021-08-24 | 西安航天动力研究所 | Full-unloading disc type magnetic pole large-drift-diameter two-position three-way electromagnetic valve |
| CN113757439A (en) * | 2021-09-17 | 2021-12-07 | 西安航天动力研究所 | Plug-in type high-pressure unloading electromagnetic valve |
| CN113757439B (en) * | 2021-09-17 | 2023-06-27 | 西安航天动力研究所 | Plug-in mounting type high-pressure unloading electromagnetic valve |
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