CN209943525U - Electromagnetic valve - Google Patents
Electromagnetic valve Download PDFInfo
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- CN209943525U CN209943525U CN201920167365.1U CN201920167365U CN209943525U CN 209943525 U CN209943525 U CN 209943525U CN 201920167365 U CN201920167365 U CN 201920167365U CN 209943525 U CN209943525 U CN 209943525U
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Abstract
The utility model discloses a solenoid valve, which comprises a valve shell; an air inlet pipe and an air outlet pipe are respectively formed on two sides of the valve shell; a sealing cavity communicated with the air inlet pipe is formed in the valve shell; a valve ring communicated with the air outlet pipe is arranged at the top part in the sealing cavity; a valve body is longitudinally connected in the valve shell under the valve ring in a sliding manner; the valve body comprises an iron core, a groove body arranged at the upper end of the iron core, low-melting-point alloy contained in the groove body and a heater used for heating the low-melting-point alloy; when the valve body moves upwards to the limit position, the valve ring can be immersed into the molten low-melting-point alloy to realize sealing; an electromagnet for driving the iron core to move upwards or downwards is arranged in the valve shell; the valve shell is provided with a heat dissipation part which is connected with the valve ring and used for dissipating heat of the low-melting-point alloy so as to solidify the low-melting-point alloy. The utility model discloses utilize the low melting point alloy can liquefy fast and the nature of solidification for it is sealed with the heat conduction frame, and then blocks the flow of air current.
Description
Technical Field
The utility model belongs to the technical field of the solenoid valve, concretely relates to solenoid valve.
Background
Chinese patent document No. CN205173648U discloses an electromagnetic control valve, which includes an electromagnetic valve body and a valve seat connected thereto, wherein the electromagnetic valve body has a cavity therein, the cavity is provided with an electromagnet, a gasket is provided at a joint of the electromagnetic valve body and the valve seat, a spring is provided on one side of the gasket located on the electromagnetic valve body, and the other end of the spring is connected to a movable iron block. The utility model provides an electromagnetic control valve is equipped with the disk seat, and valve gap and the coil that very easily purchases on the ordinary market can be joined in marriage to this disk seat, and fundamentally has solved the difficult problem of import part purchase.
In the patent, the gasket can produce the strain after the solenoid valve opens and shuts many times, leads to gas leakage, and the leakproofness reduces.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: aiming at the defects in the prior art, the electromagnetic valve can be in a cut-off state for a long time, and the sealing performance cannot be reduced.
In order to realize the purpose of the utility model, the following technical scheme is adopted to realize: a solenoid valve comprises a valve shell; and an air inlet pipe and an air outlet pipe are respectively formed on two sides of the valve shell.
A sealing cavity communicated with the air inlet pipe is formed in the valve shell; and a valve ring communicated with the air outlet pipe is arranged at the top part in the sealing cavity.
A valve body is longitudinally connected in the valve shell under the valve ring in a sliding manner; the valve body comprises an iron core, a groove body arranged at the upper end of the iron core, low-melting-point alloy contained in the groove body and a heater used for heating the low-melting-point alloy.
When the valve body moves upwards to the limit position, the valve ring can be immersed into the molten low-melting-point alloy to realize sealing.
An electromagnet for driving the iron core to move upwards or downwards is arranged in the valve shell.
The valve shell is provided with a heat dissipation part which is connected with the valve ring and used for dissipating heat of the low-melting-point alloy so as to solidify the low-melting-point alloy.
As an optimization scheme: the electromagnet comprises the iron core and a coil winding arranged on the periphery of the iron core; and a fixed iron core which is attracted with the iron core when the coil winding is electrified is fixedly connected under the iron core in the valve shell.
And a spring for driving the valve body to move upwards is arranged between the iron core and the valve shell.
As an optimization scheme: the electromagnet comprises the iron core and a coil winding arranged on the periphery of the iron core; and a first permanent magnet which is repelled from the iron core when the coil winding is electrified is fixedly connected under the iron core in the valve shell.
As an optimization scheme: the heat dissipation part is made of metal, or is a heat radiator which is hermetically connected with the valve casing and is integrally formed with the valve ring.
And an air passage for communicating the air outlet pipe with the sealed cavity is formed on the radiator.
As an optimization scheme: a plurality of vent grooves are formed in the upper end of the side wall of the tank body.
When the upper end of the groove body is abutted against the top in the sealing cavity, a gap exists between the bottom in the groove body and the lower end of the radiator, and the groove body is located at the upper limit position.
One end of the air passage close to the sealing cavity is a conical wall surface with a narrow upper part and a wide lower part.
As an optimization scheme: an upper convex part is formed at the center of the bottom in the groove body.
As an optimization scheme: the outer wall of the tank body is fixedly connected with a permanent magnet; and a Hall sensor which can be right opposite to the permanent magnet when the groove body rises to be close to or reach the limit position is arranged on the valve shell.
As an optimization scheme: an installation cavity communicated with the sealing cavity is formed in the lower part of the valve shell; a valve seat is fixedly connected in the mounting cavity; the periphery of the upper part of the valve seat is connected with the inner wall of the valve shell in a sealing mode.
The valve seat is provided with a valve body installation sleeve which is in sliding connection with the iron core; and the coil winding is arranged on the periphery of the valve body installation sleeve.
A guide groove which is longitudinally arranged is formed in the outer wall of the iron core; and a guide rail which is connected with the guide groove in a sliding manner is formed on the inner wall of the valve body installation sleeve.
As an optimization scheme: the low-melting-point alloy consists of indium, bismuth and tin; when the proportion of the alloy is 51 percent of indium, 32.5 percent of bismuth and 16.5 percent of tin, the melting point of the low-melting-point alloy is 62 ℃; when the proportion is 24.8 percent of indium, 57.2 percent of bismuth and 18 percent of tin, the melting point of the low-melting-point alloy is 77.5 ℃.
Compared with the prior art, the beneficial effects of the utility model are that: under the initial state, the utility model discloses be in the off-state.
When the electromagnetic valve needs to be switched to a conduction state, the controller controls the heater to work, the groove body transfers heat to the low-melting-point alloy, the low-melting-point alloy is liquefied, the coil winding is controlled to work simultaneously, the valve body moves downwards after the low-melting-point alloy is liquefied, the valve ring is separated from the groove body, and air flow entering the air inlet pipe can flow into the air outlet pipe through the valve ring. And after the set time is reached, the controller controls the heater to stop working, and the low-melting-point alloy is gradually solidified along with the loss of heat.
When the electromagnetic valve needs to be switched to the cut-off state, the controller controls the coil winding to stop working, the valve body moves upwards under the action of the spring, meanwhile, the controller controls the heater to work, the low-melting-point alloy is liquefied, the valve ring is inserted into the liquefied low-melting-point alloy after the low-melting-point alloy is contacted with the valve ring, when the valve body moves to the upper limit position, the permanent magnet is opposite to the Hall sensor, the Hall sensor transmits a cooling signal to the controller, the controller controls the heater to stop working, the radiator and the radiating fins guide heat into the outside, the low-melting-point alloy is further solidified, and the ventilation channel is not ventilated any more.
The utility model discloses utilize the low melting point alloy can liquefy fast and the nature of solidification for seal the valve collar, and then block the flow of air current, because the low melting point alloy forms the welding form in the solidification process and between the valve collar is connected, the leakproofness is strong, does not have the rubber valve collar and influences the problem of gas tightness because the strain.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic sectional structure diagram of the present invention in a cut-off state.
Fig. 3 is a schematic sectional structure diagram of the present invention in the on state.
Fig. 4 is an exploded schematic view of the present invention.
Fig. 5 is a schematic sectional view of the valve housing of the present invention.
Fig. 6 is a schematic structural diagram of the valve body of the present invention.
Fig. 7 is a schematic cross-sectional structure diagram of the heat sink of the present invention.
Fig. 8 is a schematic sectional structure view of the valve seat of the present invention.
Fig. 9 is a schematic structural diagram of the valve cover of the present invention.
1. A valve housing; 10. a valve cover; 101. a socket; 102. fixing an iron core; 11. mounting grooves; 12. a heat sink jack; 13. an air inlet pipe; 14. an air outlet pipe; 15. sealing the cavity; 16. a mounting cavity; 21. a heater; 22. a refrigeration plate; 23. a heat sink; 25. a Hall sensor; 3. a heat sink; 30. a positioning ring; 31. an air duct; 32. a tapered wall surface; 33. a valve ring; 4. a valve body; 401. a first liquid level; 402. a second liquid level; 403. a third liquid level; 41. a trough body; 411. a vent channel; 412. an upper convex portion; 42. an iron core; 43. a guide groove; 44. a spring; 45. a permanent magnet; 5. a valve seat; 51. a valve body mounting sleeve; 52. a guide rail; 6. and (4) winding the coil.
Detailed Description
Example 1
Referring to fig. 1 to 9, a solenoid valve according to the present embodiment includes a valve housing 1; an air inlet pipe 13 and an air outlet pipe 14 are respectively formed on two sides of the valve shell.
A sealing cavity 15 communicated with the air inlet pipe is formed in the valve shell; and a valve ring 33 communicated with the air outlet pipe is arranged at the top part in the sealing cavity.
A valve body 4 is longitudinally connected in the valve shell under the valve ring in a sliding manner; the valve body includes an iron core 42, a tank 41 provided at an upper end of the iron core, a low melting point alloy contained in the tank, and a heater 21 for heating the low melting point alloy.
The heater is a PTC heater.
When the valve body moves upwards to the limit position, the valve ring can be immersed into the molten low-melting-point alloy to realize sealing; the tank is made of a material with high thermal conductivity, such as copper.
An electromagnet for driving the iron core to move upwards or downwards is arranged in the valve shell.
The valve shell is provided with a heat dissipation part which is connected with the valve ring and used for dissipating heat of the low-melting-point alloy so as to solidify the low-melting-point alloy.
The electromagnet comprises the iron core and a coil winding arranged on the periphery of the iron core; a fixed iron core 102 which is attracted with the iron core when the coil winding is electrified is fixedly connected in the valve shell under the iron core.
A spring 44 for driving the valve body to move upwards is arranged between the iron core and the valve shell.
The heat dissipation part is the valve casing of metal material, perhaps with valve casing sealing connection, and with valve circle integrated into one piece's radiator 3.
An air duct 31 for communicating the air outlet pipe with the sealed cavity is formed on the radiator; the periphery of the valve ring is fixedly connected with a positioning ring 30 which is in sealing and abutting contact with the top in the sealing cavity through threads.
The lower end of the valve shell is fixedly connected with a valve cover 10; the fixed iron core is fixedly connected to the valve cover.
The socket 101 is installed to the valve gap lower extreme, coil winding, heater pass through the wire electricity with the socket respectively and are connected, and the socket accessible winding displacement is connected with the controller electricity. The controller can adopt a single chip microcomputer, and the controller controls the heater and the electromagnet according to the control signal to serve as a conventional simple technology in the field, is not important in the patent, and is not detailed in the text.
Under the initial condition, the valve body is located top extreme position under the spring action of spring, and the cell body upper end offsets with sealed intracavity top, and it is internal that the insertion groove of radiator lower part is internal, and low melting point alloy is located the valve ring both sides simultaneously, and is in solid state for gas can't get into out the tuber pipe through the air duct, this moment the utility model discloses be in the off-state.
When the electromagnetic valve needs to be switched to a conducting state, the controller controls the heater to work, heat generated by the heater is transferred to the low-melting-point alloy through the groove body, meanwhile, the controller controls the coil winding to work, the iron core generates magnetic force under the action of a magnetic field generated by the coil winding and attracts the fixed iron core, after the low-melting-point alloy is liquefied, the valve body moves downwards, the groove body is separated from the valve ring, airflow can enter the air outlet pipe through the air vent, after the set time is reached, the controller controls the heater to stop working, and at the moment, the liquid level of the low-melting-point alloy is a third liquid level 403 (shown in fig.
A plurality of vent grooves 411 are formed at the upper end of the side wall of the tank body.
When the upper end of the groove body is abutted against the top in the sealing cavity, a gap exists between the bottom in the groove body and the lower end of the radiator, and the groove body is located at the upper limit position.
The end of the air passage close to the sealed cavity is a conical wall 311 with a narrow top and a wide bottom.
An installation groove 11 is formed at the upper end of the valve shell; a radiating fin 23 which is in contact with the radiator is fixedly connected in the mounting groove; the heat sink is made of a material with high thermal conductivity, such as copper.
And a radiator inserting hole 12 for a radiator to pass through is formed at the bottom in the mounting groove.
When the electromagnetic valve needs to be switched to the cut-off state, the controller controls the coil winding to stop working, the valve body moves upwards under the action of the spring, the controller controls the heater to work (or the controller controls the heater to work for a period of time and then controls the coil winding to be powered off), so that the low-melting-point alloy is liquefied, the valve ring is inserted into the liquid low-melting-point alloy, the controller controls the heater to stop working, the radiator transmits the temperature to the outside through the radiating fins, so that the low-melting-point alloy is gradually solidified, in the process, the airflow entering from the air inlet pipe enters the groove body through the ventilating groove, downward pressure is generated on a second liquid level 402 (shown in figure 2) positioned at the outer periphery of the valve ring in the groove body, so that a first liquid level 401 (shown in figure 2) positioned at the inner periphery of the valve ring moves upwards, and in the process that the conical wall surface generates inward thrust in the radial direction on the low-melting, the low-melting-point alloy and the valve ring are attached more tightly until the low-melting-point alloy is solidified, so that the electromagnetic valve is in a cut-off state.
An upper convex part 412 is formed at the center of the bottom in the groove body; the low-melting-point alloy is positioned on the periphery of the upper convex part in the groove body, so that the contact area of the low-melting-point alloy and the groove body is increased.
When the heater heats the low-melting-point alloy, the temperature of the groove body and the upper convex part rises and is transferred to the low-melting-point alloy, the lower end and the inner periphery of the low-melting-point alloy are heated simultaneously, and the liquefaction speed of the low-melting-point alloy is accelerated.
The outer wall of the tank body is fixedly connected with a permanent magnet 45; and a Hall sensor 25 which can be right opposite to the permanent magnet when the groove body rises to be close to or reach the limit position is arranged on the valve shell.
When the groove body rises to the limit position, the valve ring is inserted into the low-melting-point alloy and reaches the limit position, the Hall sensor sends a signal to the controller, and the controller controls the heater to stop working.
An installation cavity 16 communicated with the sealing cavity is formed in the lower part of the valve shell; a valve seat 5 is fixedly connected in the mounting cavity; the periphery of the upper part of the valve seat is connected with the inner wall of the valve shell in a sealing mode, and gas entering the air inlet pipe flows through the upper portion of the valve seat and enters the sealing cavity.
A valve body mounting sleeve 51 connected with the iron core in a sliding manner is arranged on the valve seat; the coil winding is arranged on the periphery of the valve body mounting sleeve; the spring is installed between the iron core and the inner bottom of the valve body installation sleeve.
A guide groove 43 which is longitudinally arranged is formed on the outer wall of the iron core; the inner wall of the valve body mounting sleeve is provided with a guide rail 52 which is in sliding connection with the guide groove, so that the valve body cannot rotate circumferentially when sliding longitudinally, and the permanent magnet and the Hall sensor are prevented from being dislocated.
The low-melting-point alloy consists of indium, bismuth and tin; when the proportion of the alloy is 51 percent of indium, 32.5 percent of bismuth and 16.5 percent of tin, the melting point of the low-melting-point alloy is 62 ℃; when the proportion is 24.8 percent of indium, 57.2 percent of bismuth and 18 percent of tin, the melting point of the low-melting-point alloy is 77.5 ℃.
The maximum heating temperature of the heater is 10-50 ℃ higher than the melting point of the low-melting-point alloy.
Under the initial state, the utility model discloses be in the off-state.
When the electromagnetic valve needs to be switched to a conduction state, the controller controls the heater to work, the groove body transfers heat to the low-melting-point alloy, the low-melting-point alloy is liquefied, the coil winding is controlled to work simultaneously, the valve body moves downwards after the low-melting-point alloy is liquefied, the valve ring is separated from the groove body, and air flow entering the air inlet pipe can flow into the air outlet pipe through the valve ring. And after the set time is reached, the controller controls the heater to stop working, and the low-melting-point alloy is gradually solidified along with the loss of heat.
When the electromagnetic valve needs to be switched to the cut-off state, the controller controls the coil winding to stop working, the valve body moves upwards under the action of the spring, meanwhile, the controller controls the heater to work, the low-melting-point alloy is liquefied, the valve ring is inserted into the liquefied low-melting-point alloy after the low-melting-point alloy is contacted with the valve ring, when the valve body moves to the upper limit position, the permanent magnet is opposite to the Hall sensor, the Hall sensor transmits a cooling signal to the controller, the controller controls the heater to stop working, the radiator and the radiating fins guide heat into the outside, the low-melting-point alloy is further solidified, and the ventilation channel is not ventilated any more.
The utility model discloses utilize the low melting point alloy can liquefy fast and the nature of solidification for seal the valve collar, and then block the flow of air current, because the low melting point alloy forms the welding form in the solidification process and between the valve collar is connected, the leakproofness is strong, does not have the rubber valve collar and influences the problem of gas tightness because the strain.
Example 2
Referring to fig. 1 to 9, a solenoid valve according to the present embodiment includes a valve housing 1; an air inlet pipe 13 and an air outlet pipe 14 are respectively formed on two sides of the valve shell.
A sealing cavity 15 communicated with the air inlet pipe is formed in the valve shell; and a valve ring 33 communicated with the air outlet pipe is arranged at the top part in the sealing cavity.
A valve body 4 is longitudinally connected in the valve shell under the valve ring in a sliding manner; the valve body includes an iron core 42, a tank 41 provided at an upper end of the iron core, a low melting point alloy contained in the tank, and a heater 21 for heating the low melting point alloy.
When the valve body moves upwards to the limit position, the valve ring can be immersed into the molten low-melting-point alloy to realize sealing; the tank is made of a material with high thermal conductivity, such as copper.
An electromagnet for driving the iron core to move upwards or downwards is arranged in the valve shell.
The heater is a PTC heater.
The valve shell is provided with a heat dissipation part which is connected with the valve ring and used for dissipating heat of the low-melting-point alloy so as to solidify the low-melting-point alloy.
The electromagnet comprises the iron core and a coil winding arranged on the periphery of the iron core; and a first permanent magnet which is repelled from the iron core when the coil winding is electrified is fixedly connected under the iron core in the valve shell.
The heat dissipation part is the valve casing of metal material, perhaps with valve casing sealing connection, and with valve circle integrated into one piece's radiator 3.
An air duct 31 for communicating the air outlet pipe with the sealed cavity is formed on the radiator; the periphery of the valve ring is fixedly connected with a positioning ring 30 which is in sealing and abutting contact with the top in the sealing cavity through threads.
The lower end of the valve shell is fixedly connected with a valve cover 10; the fixed iron core is fixedly connected to the valve cover.
The socket 101 is installed to the valve gap lower extreme, coil winding, heater pass through the wire electricity with the socket respectively and are connected, and the socket accessible winding displacement is connected with the controller electricity.
A plurality of vent grooves 411 are formed at the upper end of the side wall of the tank body.
When the upper end of the groove body is abutted against the top in the sealing cavity, a gap exists between the bottom in the groove body and the lower end of the radiator, and the groove body is located at the upper limit position.
The end of the air passage close to the sealed cavity is a conical wall 311 with a narrow top and a wide bottom.
An installation groove 11 is formed at the upper end of the valve shell; a radiating fin 23 which is in contact with the radiator is fixedly connected in the mounting groove; the heat sink is made of a material with high thermal conductivity, such as copper.
And a radiator inserting hole 12 for a radiator to pass through is formed at the bottom in the mounting groove.
An upper convex part 412 is formed at the center of the bottom in the groove body; the low-melting-point alloy is positioned on the periphery of the upper convex part in the groove body, so that the contact area of the low-melting-point alloy and the groove body is increased.
When the heater heats the low-melting-point alloy, the temperature of the groove body and the upper convex part rises and is transferred to the low-melting-point alloy, the lower end and the inner periphery of the low-melting-point alloy are heated simultaneously, and the liquefaction speed of the low-melting-point alloy is accelerated.
The outer wall of the tank body is fixedly connected with a permanent magnet 45; and a Hall sensor 25 which can be right opposite to the permanent magnet when the groove body rises to be close to or reach the limit position is arranged on the valve shell.
When the groove body rises to the limit position, the valve ring is inserted into the low-melting-point alloy and reaches the limit position, the Hall sensor sends a signal to the controller, and the controller controls the heater to stop working.
An installation cavity 16 communicated with the sealing cavity is formed in the lower part of the valve shell; a valve seat 5 is fixedly connected in the mounting cavity; the periphery of the upper part of the valve seat is connected with the inner wall of the valve shell in a sealing mode, and gas entering the air inlet pipe flows through the upper portion of the valve seat and enters the sealing cavity.
A valve body mounting sleeve 51 connected with the iron core in a sliding manner is arranged on the valve seat; the coil winding is arranged on the periphery of the valve body mounting sleeve; the spring is installed between the iron core and the inner bottom of the valve body installation sleeve.
A guide groove 43 which is longitudinally arranged is formed on the outer wall of the iron core; the inner wall of the valve body mounting sleeve is provided with a guide rail 52 which is in sliding connection with the guide groove, so that the valve body cannot rotate circumferentially when sliding longitudinally, and the permanent magnet and the Hall sensor are prevented from being dislocated.
The low-melting-point alloy consists of indium, bismuth and tin; when the proportion of the alloy is 51 percent of indium, 32.5 percent of bismuth and 16.5 percent of tin, the melting point of the low-melting-point alloy is 62 ℃; when the proportion is 24.8 percent of indium, 57.2 percent of bismuth and 18 percent of tin, the melting point of the low-melting-point alloy is 77.5 ℃.
The maximum heating temperature of the heater is 10-50 ℃ higher than the melting point of the low-melting-point alloy.
In the initial state, the coil winding does not work, the first permanent magnet and the iron core attract each other, the valve body is located at the lower limit position, the groove body is separated from the valve ring, and the electromagnetic valve is in a conducting state at the moment.
When the electromagnetic valve needs to be switched to the cut-off state, the controller controls the coil winding to work, the iron core generates a magnetic force repellent to the first permanent magnet under the action of a magnetic field generated by the coil winding, so that the valve body moves upwards, the controller controls the heater to work (or the controller controls the heater to work for a period of time and then controls the coil winding to be powered off) so that the low-melting-point alloy is liquefied, the valve ring is inserted into the liquid low-melting-point alloy, when the Hall sensor and the permanent magnet are aligned, the controller controls the heater to stop working, the radiator transmits the temperature to the outside through the radiating fins so that the low-melting-point alloy is gradually solidified, in the process, airflow entering from the air inlet pipe enters the groove body through the ventilating groove to generate downward pressure on a second liquid level 402 (shown in figure 2) positioned at the periphery of the valve ring in the groove body, so that a first liquid level 401 (shown in figure 2, in the process that the first liquid level moves upwards, the conical wall surface generates inward thrust in the radial direction against the low-melting-point alloy which is gradually solidified on the inner periphery of the valve ring, so that the low-melting-point alloy and the valve ring are attached more tightly until the low-melting-point alloy is solidified, and the electromagnetic valve is in a cut-off state.
When the electromagnetic valve needs to be switched to a conducting state, the controller controls the heater to work, heat generated by the heater is transferred to the low-melting-point alloy through the groove body, meanwhile, the controller controls the coil winding to stop working, the first permanent magnet and the fixed iron core attract each other, after the low-melting-point alloy is liquefied, the valve body moves downwards, the groove body is separated from the valve ring, airflow can enter the air outlet pipe through the air vent, after the set time is reached, the controller controls the heater to stop working, and at the moment, the liquid level of the low-melting-point alloy is a third liquid level 403 (shown in fig. 3.
Example 3
As shown in fig. 1 to 9, the present embodiment is modified from the foregoing embodiment as follows: the upper part of the radiator extends to the upper end of the valve shell; the upper end of the valve shell is provided with a refrigerating sheet 22 which is in contact with or fixedly connected with the radiator; the lower end of the cooling fin mounting seat is provided with a cooling fin.
The refrigerating piece is electrically connected with the socket.
After the heater works, the controller controls the refrigerating sheet to work, so that the temperature of the radiator is reduced, and the solidification speed of the low-melting-point alloy is accelerated.
Claims (8)
1. A solenoid valve comprises a valve shell; an air inlet pipe and an air outlet pipe are respectively formed on two sides of the valve shell; the method is characterized in that:
a sealing cavity communicated with the air inlet pipe is formed in the valve shell; a valve ring communicated with the air outlet pipe is arranged at the top part in the sealing cavity;
a valve body is longitudinally connected in the valve shell under the valve ring in a sliding manner; the valve body comprises an iron core, a groove body arranged at the upper end of the iron core, low-melting-point alloy contained in the groove body and a heater used for heating the low-melting-point alloy;
when the valve body moves upwards to the limit position, the valve ring can be immersed into the molten low-melting-point alloy to realize sealing;
an electromagnet for driving the iron core to move upwards or downwards is arranged in the valve shell;
the valve shell is provided with a heat dissipation part which is connected with the valve ring and used for dissipating heat of the low-melting-point alloy so as to solidify the low-melting-point alloy.
2. A solenoid valve as claimed in claim 1, wherein: the electromagnet comprises the iron core and a coil winding arranged on the periphery of the iron core; a fixed iron core which is attracted with the iron core when the coil winding is electrified is fixedly connected in the valve shell under the iron core;
and a spring for driving the valve body to move upwards is arranged between the iron core and the valve shell.
3. A solenoid valve as claimed in claim 1, wherein: the electromagnet comprises the iron core and a coil winding arranged on the periphery of the iron core; and a first permanent magnet which is repelled from the iron core when the coil winding is electrified is fixedly connected under the iron core in the valve shell.
4. A solenoid valve as claimed in claim 1, wherein: the heat dissipation part is the valve shell made of metal materials or a heat radiator which is hermetically connected with the valve shell and integrally formed with the valve ring;
and an air passage for communicating the air outlet pipe with the sealed cavity is formed on the radiator.
5. A solenoid valve according to claim 4, wherein: a plurality of vent grooves are formed in the upper end of the side wall of the tank body;
when the upper end of the groove body is abutted against the top in the sealing cavity, a gap exists between the bottom in the groove body and the lower end of the radiator, and the groove body is located at an upper limit position;
one end of the air passage close to the sealing cavity is a conical wall surface with a narrow upper part and a wide lower part.
6. A solenoid valve as claimed in claim 1, wherein: an upper convex part is formed at the center of the bottom in the groove body.
7. A solenoid valve as claimed in claim 1, wherein: the outer wall of the tank body is fixedly connected with a permanent magnet; and a Hall sensor which can be right opposite to the permanent magnet when the groove body rises to be close to or reach the limit position is arranged on the valve shell.
8. A solenoid valve as claimed in claim 1, wherein: the melting point of the low-melting-point alloy is 62 ℃ or 77.5 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167365.1U CN209943525U (en) | 2019-01-30 | 2019-01-30 | Electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167365.1U CN209943525U (en) | 2019-01-30 | 2019-01-30 | Electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209943525U true CN209943525U (en) | 2020-01-14 |
Family
ID=69121846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920167365.1U Active CN209943525U (en) | 2019-01-30 | 2019-01-30 | Electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209943525U (en) |
-
2019
- 2019-01-30 CN CN201920167365.1U patent/CN209943525U/en active Active
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Effective date of registration: 20230531 Address after: No. 369, Building A, Daxing Airport Area, Free Trade Zone, No. 1 Qianping Road, Lixian Town, Daxing District, Beijing 102600 Patentee after: Beijing Xinhangcheng Energy Development Co.,Ltd. Address before: 310018 Yifu Science and Technology Building 1-113 (Automation Department), East District, China University of Metrology, Hangzhou Economic and Technological Development Zone, Zhejiang Province Patentee before: HANGZHOU TANBU TECHNOLOGY Co.,Ltd. |