CN117231757A - High-temperature-resistant zero-leakage electromagnetic valve and use method thereof - Google Patents
High-temperature-resistant zero-leakage electromagnetic valve and use method thereof Download PDFInfo
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- CN117231757A CN117231757A CN202311474276.9A CN202311474276A CN117231757A CN 117231757 A CN117231757 A CN 117231757A CN 202311474276 A CN202311474276 A CN 202311474276A CN 117231757 A CN117231757 A CN 117231757A
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- 238000007789 sealing Methods 0.000 claims abstract description 32
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 description 12
- 238000009413 insulation Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
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- 230000000694 effects Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
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Abstract
The invention provides a high-temperature-resistant zero-leakage electromagnetic valve and a use method thereof, wherein a pilot valve assembly of the electromagnetic valve comprises a pilot valve shell, an exhaust channel, a sliding cavity, a pilot cavity and an air inlet channel which are communicated are sequentially arranged in the pilot valve shell from left to right, a first jacking assembly for opening and closing the exhaust channel is arranged at the exhaust channel, a second jacking assembly for opening and closing the air inlet channel is arranged at the air inlet channel, a sliding block is arranged in the sliding cavity, a locking assembly matched with the sliding block is arranged in the pilot valve shell outside the sliding cavity, a gas transmission channel and an elastic air bag are arranged at the lower end of the pilot cavity, and the jacking piston assembly moves downwards to close a high-temperature valve body assembly after the elastic air bag is inflated. According to the invention, through the arrangement of the elastic air bag, the sealing ring between the piston body and the piston shell is conveniently omitted, and leakage of pilot gas caused by abrasion of the sealing ring is avoided; through the setting of the locking assembly, the electromagnetic valve is suitable for high-pressure medium, and simultaneously, the requirement on the bearing pressure of the electromagnet assembly is reduced.
Description
Technical Field
The invention relates to the technical field of electromagnetic valves, in particular to a high-temperature-resistant zero-leakage electromagnetic valve and a use method thereof.
Background
If the electromagnetic valve is used for a high-temperature medium, the temperature of the medium is above 800 ℃, electromagnetic coils and the like are easy to burn, and the normal use of the electromagnetic valve is affected; if be used for high-pressure medium, the solenoid valve is mostly the guide formula structure, and under the circular telegram state, electromagnet assembly removes, closes the gas vent of pilot valve, opens the air inlet of pilot valve, makes the valve rod both ends of piston assembly form pressure differential, and then promotes the valve rod and remove, closes the medium passageway, and this kind of structure appears following problem easily: 1. the valve rod and the piston shell are mainly sealed by a sealing ring, and the sealing ring is easy to wear along with the axial reciprocating movement of the valve rod, so that pilot gas is leaked, and the pressure difference at two ends of the valve rod is influenced; 2. in order to form pressure difference at two ends of the valve rod under a high-pressure medium, the gas pressure in the pilot valve is also larger, the acting force on the electromagnet assembly is increased, and the electromagnet assembly is easily damaged; in order to be suitable for high-pressure medium and improve the bearing pressure of the electromagnet assembly, double coils and the like are adopted in the prior art to improve the electromagnetic performance, but the manufacturing cost of the electromagnetic valve is increased.
Disclosure of Invention
The invention provides a high-temperature-resistant zero-leakage electromagnetic valve and a use method thereof, wherein a sealing ring between a piston body and a piston shell is omitted conveniently through the arrangement of an elastic air bag, so that leakage of pilot gas caused by abrasion of the sealing ring is avoided; through the setting of the locking assembly, the electromagnetic valve is suitable for high-pressure medium, and simultaneously, the requirement on the bearing pressure of the electromagnet assembly is reduced.
The technical scheme of the invention is realized as follows: the utility model provides a high temperature resistant zero leakage solenoid valve, including the electro-magnet subassembly that links to each other in proper order, the pilot valve subassembly, piston subassembly and high temperature valve body subassembly, the pilot valve subassembly includes the guide valve casing, the communicating exhaust passage has been set gradually from left to right in the guide valve casing, sliding chamber, guide chamber and inlet channel, exhaust passage department is provided with the first top that is used for exhaust passage switching moves the subassembly, inlet channel department is provided with the second top that is used for inlet channel switching moves the subassembly, sliding intracavity is provided with the slider, be provided with in the guide valve casing outside the sliding chamber with slider complex locking subassembly, electro-magnet subassembly offsets with first top and move the subassembly, first top moves the subassembly and links to each other with the slider, slider and second top move the subassembly and offset, the lower extreme in guide chamber is provided with the communicating gas-supply channel with the piston subassembly, the gas outlet of gas-supply channel is provided with elastic air bag, top moves the piston subassembly and moves down after the elastic air bag is inflated and closes high temperature valve body subassembly.
Further, the first jacking component comprises a first jacking block and a first plugging block, the right end of the first plugging block is fixedly provided with a first jacking rod, the first jacking rod penetrates through the exhaust channel and is fixedly connected with the left end of the sliding block, the first jacking block is located at the left side of the first plugging block, the outer side of the first plugging block is sleeved with a first reset spring, the right end of the first jacking block abuts against the left end of the first reset spring, and the electromagnet component abuts against the first jacking block.
Further, the locking assembly comprises a first magnet, the first magnet is fixed at the right end of the first ejector block, an axial chute is arranged in a guide valve casing at the outer side of the sliding cavity, a supporting spring is arranged in the axial chute, a sliding plate is arranged on the right side of the supporting spring, a second magnet attracted with the first magnet is arranged at the left end of the sliding plate, a limiting through hole is formed in the side wall of the sliding cavity, a limiting ball is arranged at the limiting through hole, a first limiting groove matched with the limiting ball is formed in the sliding plate, a second limiting groove matched with the limiting ball is formed in the sliding block, and the first limiting groove and the second limiting groove are staggered. After the electromagnet assembly is electrified, the sliding block moves right to drive the second limiting groove to move to the limiting through hole; the first magnet moves rightwards, and the sliding plate moves through the magnetic attraction matching of the first magnet and the second magnet, so that the limiting ball is adjusted to be contracted into the limiting through hole and the second limiting groove, and the sliding block is locked.
Further, the piston assembly comprises a piston shell, a sliding piston valve is arranged in the piston shell, an elastic air bag is arranged in the piston shell at the upper side of the piston valve, a reinforcing pad is arranged at the bottom of the elastic air bag, the air inlet end of the elastic air bag is communicated with the air transmission channel, an annular connecting sheet is fixed between the pilot valve shell and the piston shell and is connected with the piston shell through a locking bolt, and a first sealing ring is arranged between the annular connecting sheet and the pilot valve shell. The arrangement of the annular connecting sheet ensures the connection stability of the air inlet end of the elastic air bag; through the setting of reinforcement pad, play the guard action to the elastic air bag, avoid the piston valve to shift up and cause the damage to the elastic air bag when restoring to the throne.
Further, the piston valve comprises a piston body, the lower end of the piston body is fixedly provided with a vertical valve rod, the outer side of the vertical valve rod is sleeved with a vertical reset spring, a heat dissipation hole is formed in a piston shell on the periphery of the vertical valve rod, heat dissipation of the vertical valve rod is facilitated, and meanwhile downward moving resistance of the piston valve is reduced.
Further, the electromagnet assembly comprises an electromagnet valve body, a hollow fixed shaft is arranged in the electromagnet valve body, a coil is arranged on the outer side of the fixed shaft, a sliding movable iron core is arranged in the fixed shaft, an axial through hole is arranged in the movable iron core, a transverse ejector rod is arranged on the right side of the movable iron core, the transverse ejector rod slides to penetrate through the electromagnet valve body to abut against the first ejector moving assembly, and an exhaust port communicated with an exhaust channel is formed in the electromagnet valve body.
Further, the second jacking component comprises a second ejector rod, a second plugging block and a second ejector block which are sequentially connected from left to right, a second reset spring is arranged at the right end of the second ejector block, and the second ejector rod penetrates through the air inlet channel and abuts against the right end of the sliding block.
Further, the high-temperature valve body assembly comprises a high Wen Fake, the high Wen Fake is connected with the lower end of the piston shell in a sealing way, a high-temperature gas channel is arranged in the high Wen Fake, a valve hole which is convenient for a vertical valve rod to pass through in a sealing way is arranged at the upper end of the high Wen Fake, the valve hole is communicated with the high-temperature gas channel, and heat insulation sealing blocks are arranged on the inner walls of the high-temperature gas channel and the valve hole.
The application method of the high-temperature-resistant zero-leakage electromagnetic valve comprises the following steps of:
(1) After the electromagnet assembly is electrified, the first jacking assembly, the sliding block and the second jacking assembly are driven to move rightwards, the locking assembly locks the sliding block, the exhaust channel is closed, and the air inlet channel is opened;
(2) The pilot gas sequentially passes through the air inlet channel, the pilot cavity and the conveying channel and then enters the elastic air bag, and after the elastic air bag is inflated, the piston assembly is pushed to move downwards to close the high-temperature valve body assembly;
(3) After the electromagnet assembly is powered off, the locking assembly releases the sliding block, the second jacking assembly drives the sliding block to move left, the exhaust channel is opened, the air inlet channel is closed, pilot gas is discharged through the exhaust channel, the elastic air bag is deflated, the piston assembly moves upwards, and the high-temperature valve body assembly is opened.
Further, in the step (1), the method for locking the slider by the locking component is as follows: after the electromagnet assembly is electrified, the first jacking assembly drives the sliding block to move right to drive the second limiting groove to move to the limiting through hole, meanwhile, the first jacking block drives the first magnet to move right, the first reset spring is compressed, the first magnet is attracted with the second magnet, the support spring is compressed, the sliding plate moves left to enable the limiting ball to be contracted into the limiting through hole and the second limiting groove, and the sliding block is locked;
in the step (3), the method for loosening the sliding block by the locking assembly is as follows: after the electromagnet assembly is powered off, the first reset spring drives the first magnet to move left, the attraction force of the first magnet and the attraction force of the second magnet are weakened, the support spring drives the sliding plate to reset, the first limiting groove moves to the limiting through hole, the second jacking assembly drives the sliding block to move left, the limiting ball is contracted into the limiting through hole and the first limiting groove, and the sliding block is loosened.
The invention has the beneficial effects that:
according to the electromagnetic valve, through the arrangement of the elastic air bag, the pilot gas enters the elastic air bag, and the piston body and the vertical valve rod are pushed to move after the elastic air bag is inflated, so that a sealing ring between the piston body and the piston shell is omitted, and leakage of the pilot gas caused by abrasion of the sealing ring is avoided. Therefore, the arrangement of the elastic air bag is beneficial to prolonging the service life of the electromagnetic valve.
According to the invention, through the arrangement of the locking component, after the electromagnet component is electrified, the sliding block is pushed to a required position, the locking component locks the sliding block, the sliding block is fixedly connected with the first blocking block through the first ejector rod, the position of the sliding block is locked, the first blocking block is locked, and under the use environment of a high-pressure medium, the damage to the electromagnet component due to the increase of pressure intensity is reduced due to the position locking of the sliding block and the first blocking block; the structure is suitable for high-pressure medium, and simultaneously reduces the requirement on the bearing pressure of the electromagnet assembly.
The invention adopts a pilot structure, and utilizes pilot gas to push the piston assembly to move, thereby realizing the closing of the high-temperature valve body assembly, the piston body and the vertical valve rod can both play a role in heat insulation, and the piston shell is also provided with a heat dissipation hole, so that the heat dissipation of the vertical valve rod is facilitated, and the influence of heat on the electromagnet assembly is reduced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a high temperature resistant zero leakage solenoid valve in an energized state;
FIG. 2 is a schematic diagram of a pilot valve assembly in an energized state;
FIG. 3 is an enlarged view of a portion of FIG. 2A;
FIG. 4 is a schematic diagram of the structure of the high temperature resistant zero leakage solenoid valve in the de-energized state;
fig. 5 is a partial enlarged view of B in fig. 4.
Electromagnet assembly 1, pilot valve assembly 2, piston assembly 3, high temperature valve body assembly 4, pilot valve housing 5, exhaust passage 6, sliding chamber 7, pilot chamber 8, intake passage 9, slider 10, lock assembly 11, first ejector block 12, first shutoff block 13, first ejector rod 14, first return spring 15, first gasket 16, lock nut 17, second ejector rod 18, second shutoff block 19, second ejector block 20, second return spring 21, second gasket 22, piston housing 23, piston body 24, vertical valve rod 25, vertical return spring 26, heat dissipation hole 27, gas delivery passage 28, elastic airbag 29, annular connection piece 30, first seal ring 31, reinforcement gasket 32, first magnet 33, axial chute 34, support spring 35, sliding plate 36, second magnet 37, limit through hole 38, limit ball 39, first limit groove 40, second limit groove 41, electromagnet valve body 42, fixed shaft 43, coil 44, movable core 45, lateral ejector rod 46, high Wen Fake, high temperature gas passage 48, heat insulation seal block 49.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
In the present invention, terms such as "upper, lower, left, right" and the like are relative to the positional relationship shown in fig. 1.
Example 1
As shown in fig. 1 and 2, a high temperature resistant zero leakage solenoid valve comprises an electromagnet assembly 1, a pilot valve assembly 2, a piston assembly 3 and a high temperature valve body assembly 4 which are sequentially connected, wherein the pilot valve assembly 2 comprises a pilot valve housing 5, a communicated exhaust passage 6, a sliding cavity 7, a pilot cavity 8 and an air inlet passage 9 are sequentially arranged in the pilot valve housing 5 from left to right, the pilot valve body comprises an air outlet shell and an air inlet shell which are coaxially and spirally connected, the exhaust passage 6 and the sliding cavity 7 are arranged in the air outlet shell, the pilot cavity 8 and the air inlet passage 9 are arranged in the air inlet shell, the right end inner diameter of the exhaust passage 6 is smaller than the sliding cavity 7, and the left end inner diameter of the air inlet passage 9 is smaller than the pilot cavity 8.
As shown in fig. 1 and 2, a first pushing component for opening and closing the exhaust channel 6 is arranged in the exhaust channel 6, the first pushing component comprises a first pushing block 12 and a first blocking block 13, a first pushing rod 14 is fixed at the right end of the first blocking block 13, the first pushing rod 14 penetrates through the exhaust channel 6 and is fixedly connected with the left end of the sliding block 10, one end, close to the first pushing rod 14, of the first blocking block 13 is a conical end, and a first sealing gasket 16 matched with the first blocking block 13 is fixed at the right end of the exhaust channel 6. The first ejector block 12 is located on the left side of the first plugging block 13, a first reset spring 15 is sleeved on the outer side of the first plugging block 13, the right end of the first ejector block 12 abuts against the left end of the first reset spring 15, and the electromagnet assembly 1 abuts against the first ejector block 12.
The sliding cavity 7 is internally provided with a sliding block 10, an axial gas channel (not shown in the figure) is arranged on the peripheral side wall of the sliding block 10, gas conveniently enters the exhaust channel 6 through the sliding cavity 7, and a guide valve casing 5 outside the sliding cavity 7 is provided with a locking component 11 matched with the sliding block 10.
As shown in fig. 2, 3 and 5, the capture assembly includes a first magnet 33, the first magnet 33 being fixed to the right end of the first top block 12. An axial sliding groove 34 is formed in the guide valve casing 5 at the outer side of the sliding cavity 7, a supporting spring 35 is installed in the axial sliding groove 34, the right side of the supporting spring 35 abuts against the sliding plate 36, a second magnet 37 attracted with the first magnet 33 is fixed at the left end of the sliding plate 36, and the first magnet 33 and the second magnet 37 are permanent magnets. The side wall of the sliding cavity 7 is provided with a limiting through hole 38, a limiting ball 39 is placed at the limiting through hole 38, the depth of the limiting through hole 38 is smaller than the diameter of the limiting ball 39, the limiting ball 39 is arranged in the limiting through hole 38, and the end part of the limiting ball 39 is exposed. The sliding plate 36 is provided with a first limit groove 40 matched with the limit ball 39, the sliding block 10 is provided with a second limit groove 41 matched with the limit ball 39, and the first limit groove 40 and the second limit groove 41 are staggered.
The method of locking the slider 10 by the locking assembly 11 is as follows: as shown in fig. 2 and 3, after the electromagnet assembly 1 is electrified, the first pushing assembly moves right, the first blocking block 13 is matched with the first sealing gasket 16, the right end blocking of the exhaust channel 6 is completed, the exhaust channel 6 is closed, meanwhile, the sliding block 10 is pushed to move right, the second limiting groove 41 is driven to move to the limiting through hole 38, the first pushing block 12 drives the first magnet 33 to move right, the first reset spring 15 is compressed, the first magnet 33 and the second magnet 37 are attracted, the supporting spring 35 is compressed, the sliding plate 36 moves left, the limiting ball 39 is retracted into the limiting through hole 38 and the second limiting groove 41, and the sliding block 10 is locked.
The method of releasing the slider 10 by the capture assembly 11 is as follows: as shown in fig. 4 and 5, after the electromagnet assembly 1 is powered off, the first return spring 15 drives the first magnet 33 to move left, the attraction force between the first magnet 33 and the second magnet 37 is weakened, the support spring 35 drives the sliding plate 36 to return, the first limit groove 40 moves to the limit through hole 38, the second jacking assembly drives the sliding block 10 to move left, the limit ball 39 is retracted into the limit through hole 38 and the first limit groove 40, and the sliding block 10 is released.
As shown in fig. 2, a locking nut 17 with an axial through hole is screwed at the left end in the air inlet channel 9, a second top moving component for opening and closing the air inlet channel 9 is arranged in the air inlet channel 9, and the sliding block 10 is abutted against the second top moving component. The second jacking assembly comprises a second ejector rod 18, a second blocking block 19 and a second ejector block 20 which are fixedly connected in sequence from left to right, a second reset spring 21 is arranged between the right end of the second ejector block 20 and the lock nut 17, the second ejector rod 18 penetrates through the air inlet channel 9 and abuts against the right end of the sliding block 10, and a second sealing gasket 22 matched with the second blocking block 19 is fixed at the left end of the air inlet channel 9. After the electromagnet assembly 1 is electrified, the first jacking assembly, the sliding block 10 and the second jacking assembly are pushed to move rightwards, the second blocking block 19 is far away from the left end of the air inlet channel 9, the second reset spring 21 is compressed, and the left end of the air inlet channel 9 is opened; after the electromagnet assembly 1 is powered off, the second ejector rod 18, the second plugging block 19 and the second ejector block 20 move left under the action of the second reset spring 21, and the left end of the air inlet channel 9 is closed; simultaneously, the second ejector rod 18 pushes the sliding block 10, the first ejector rod 14 and the first plugging block 13 to move left, and the exhaust channel 6 is opened.
As shown in fig. 1, the piston assembly 3 comprises a vertical piston shell 23, a piston valve sliding vertically is arranged in the piston shell 23, the piston valve comprises a piston body 24, a vertical valve rod 25 is fixed at the lower end of the piston body 24, a vertical return spring 26 is sleeved outside the vertical valve rod 25, a heat dissipation hole 27 is formed in the piston shell 23 at the periphery of the vertical valve rod 25, and the vertical valve rod 25 and the piston body 24 are made of heat insulation materials.
The lower extreme of guide's chamber 8 is provided with the gas-supply channel 28 that communicates with each other with piston shell 23, the gas outlet of gas-supply channel 28 is fixed with elasticity gasbag 29, elasticity gasbag 29 is arranged in piston shell 23 of piston body 24 upside, the bottom of elasticity gasbag 29 is fixed with reinforcing pad 32, the inlet end of elasticity gasbag 29 communicates with each other with the gas-supply channel 28's end of giving vent to anger, and be fixed with annular connection piece 30, annular connection piece 30 is arranged between guide's valve casing 5 and piston shell 23, and link to each other through the lock bolt, be fixed with first sealing washer 31 between annular connection piece 30 and the guide's valve casing 5, through the setting of first sealing washer 31, ensure the sealing connection between elasticity gasbag 29 and the gas-supply channel 28, the sealing washer between piston body 24 and the piston shell 23 can be saved, can realize avoiding the needs through elasticity gasbag 29, as shown in fig. 1, the sealing washer at piston body 24 and piston shell 23 also can remain, realize double seal, as shown in fig. 4, sealing washer at piston body 24 has been kept. The arrangement of the annular connecting sheet 30 ensures the stability of the connection of the air inlet end of the elastic air bag 29; the reinforcing cushion 32 protects the elastic air bag 29 and prevents the elastic air bag 29 from being damaged when the piston body 24 moves upwards and resets.
The elastic air bag 29 is inflated to push the piston body 24 and the vertical valve rod 25 to move downwards, the vertical return spring 26 is compressed, and hot air in the piston shell 23 at the lower side of the piston body 24 is discharged through the heat dissipation holes 27; when the elastic air bag 29 is deflated and the vertical return spring 26 drives the piston body 24 and the vertical valve rod 25 to move upwards, external air is sucked into the piston body 24 through the heat dissipation holes 27.
The application method of the high-temperature-resistant zero-leakage electromagnetic valve comprises the following steps of:
(1) As shown in fig. 1, after the electromagnet assembly 1 is electrified, the first jacking assembly, the sliding block 10 and the second jacking assembly are driven to move rightwards, the sliding block 10 is locked by the locking assembly 11, the exhaust channel 6 is closed, and the air inlet channel 9 is opened;
(2) The pilot gas sequentially passes through the air inlet channel 9, the pilot cavity 8 and the conveying channel and then enters the elastic air bag 29, and after the elastic air bag 29 is inflated, the piston assembly 3 is pushed to move downwards to close the high-temperature valve body assembly 4;
(3) As shown in fig. 4, after the electromagnet assembly 1 is powered off, the locking assembly 11 releases the sliding block 10, the sliding block second jacking assembly drives the sliding block 10 to move left, the exhaust channel 6 is opened, the air inlet channel 9 is closed, the pilot gas is discharged through the exhaust channel 6, the elastic air bag 29 is deflated, the piston assembly 3 moves upwards, and the high-temperature valve body assembly 4 is opened.
Example 2
This embodiment is substantially the same as embodiment 1 except that, as shown in fig. 1 and 2, the electromagnet assembly 1 includes an electromagnet valve body 42, the right end of the electromagnet valve body 42 is screwed with a pilot valve housing 5, and the left end is fixed with an electrical plug. A hollow fixed shaft 43 is fixed in the electromagnet valve body 42, a coil 44 is fixed on the outer side of the fixed shaft 43, a sliding movable iron core 45 is installed in the fixed shaft 43, an axial through hole is arranged in the movable iron core 45, a transverse ejector rod 46 is connected to the right side of the movable iron core 45, the transverse ejector rod 46 slides through the electromagnet valve body 42 body to abut against the first ejector moving component, and an exhaust port communicated with the exhaust channel 6 is arranged on the electromagnet valve body 42 body. After the electromagnet assembly 1 is electrified, the movable iron core 45 moves rightwards, so that the transverse ejector rod 46, the first ejector assembly, the sliding block 10 and the second ejector assembly are pushed to move rightwards; after the electromagnet assembly 1 is powered off, the movable iron core 45, the transverse ejector rod 46 and the first ejector block 12 move leftwards under the action of the first reset spring 15.
As shown in fig. 1, the high temperature valve body assembly 4 comprises a high Wen Fake, the high Wen Fake is connected with the lower end of the piston shell 23 in a sealing way, a high temperature gas channel 48 is arranged in the high Wen Fake, a valve hole which is convenient for the vertical valve rod 25 to pass through is arranged at the upper end of the high Wen Fake 47, the valve hole is communicated with the high temperature gas channel 48, the vertical valve rod 25 enters the high temperature gas channel 48 through the valve hole, the high temperature gas channel 48 is closed, one end of the high temperature gas channel 48 is a high temperature gas inlet, and the other end of the high temperature gas channel 48 is a high temperature gas outlet.
And the high-temperature gas channel 48 and the inner wall of the valve hole are both fixedly provided with a heat-insulating sealing block 49, and the heat-insulating sealing block 49 is a graphite sealing block. In order to ensure the tightness, the inlet of the valve hole is further provided with an adjusting pad, a sealing ring, an adjusting pad, a graphite gasket, an adjusting pad and a graphite gasket from bottom to top in sequence, so that the sealing and heat insulation effects are achieved. A sealing ring is also installed between the vertical valve rod 25 and the lower port of the piston housing 23.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The utility model provides a high temperature resistant zero leakage solenoid valve, includes electromagnet assembly, pilot valve subassembly, piston assembly and the high temperature valve body subassembly that links to each other in proper order, its characterized in that: the pilot valve assembly comprises a pilot valve housing, a communicating exhaust passage, a sliding cavity, a pilot cavity and an air inlet passage are sequentially arranged in the pilot valve housing from left to right, a first jacking assembly for opening and closing the exhaust passage is arranged at the exhaust passage, a second jacking assembly for opening and closing the air inlet passage is arranged at the air inlet passage, a sliding block is arranged in the sliding cavity, a locking assembly matched with the sliding block is arranged in the pilot valve housing outside the sliding cavity, an electromagnet assembly abuts against the first jacking assembly, the first jacking assembly is connected with the sliding block, the sliding block abuts against the second jacking assembly, a gas transmission passage communicated with the piston assembly is arranged at the lower end of the pilot cavity, an elastic air bag is arranged at a gas outlet of the gas transmission passage, and the jacking piston assembly moves downwards to close the high-temperature valve body assembly after the elastic air bag is inflated.
2. The high temperature resistant zero leakage solenoid valve of claim 1, wherein: the first jacking component comprises a first jacking block and a first plugging block, wherein the right end of the first plugging block is fixedly provided with a first ejector rod, the first ejector rod penetrates through the exhaust channel and is fixedly connected with the left end of the sliding block, the first jacking block is positioned on the left side of the first plugging block, the outer side of the first plugging block is sleeved with a first reset spring, the right end of the first jacking block abuts against the left end of the first reset spring, and the electromagnet component abuts against the first jacking block.
3. The high temperature resistant zero leakage solenoid valve of claim 2, wherein: the locking assembly comprises a first magnet, the first magnet is fixed at the right end of a first ejector block, an axial chute is arranged in a guide valve casing at the outer side of a sliding cavity, a supporting spring is arranged in the axial chute, a sliding plate is arranged at the right side of the supporting spring, a second magnet attracted with the first magnet is arranged at the left end of the sliding plate, a limiting through hole is formed in the side wall of the sliding cavity, a limiting ball is arranged at the limiting through hole, a first limiting groove matched with the limiting ball is formed in the sliding plate, a second limiting groove matched with the limiting ball is formed in the sliding block, and the first limiting groove and the second limiting groove are staggered.
4. The high temperature resistant zero leakage solenoid valve of claim 1, wherein: the piston assembly comprises a piston shell, a sliding piston valve is arranged in the piston shell, an elastic air bag is arranged in the piston shell at the upper side of the piston valve, a reinforcing pad is arranged at the bottom of the elastic air bag, the air inlet end of the elastic air bag is communicated with the air transmission channel and is fixedly provided with an annular connecting sheet, the annular connecting sheet is arranged between the pilot valve shell and the piston shell and is connected with the pilot valve shell through a locking bolt, and a first sealing ring is arranged between the annular connecting sheet and the pilot valve shell.
5. The high temperature resistant zero leakage solenoid valve according to claim 4, wherein: the piston valve comprises a piston body, a vertical valve rod is fixed at the lower end of the piston body, a vertical reset spring is sleeved on the outer side of the vertical valve rod, and a heat dissipation hole is formed in a piston shell on the periphery of the vertical valve rod.
6. The high temperature resistant zero leakage solenoid valve of claim 1, wherein: the electromagnet assembly comprises an electromagnet valve body, a hollow fixed shaft is arranged in the electromagnet valve body, a coil is arranged on the outer side of the fixed shaft, a sliding movable iron core is arranged in the fixed shaft, an axial through hole is arranged in the movable iron core, a transverse ejector rod is arranged on the right side of the movable iron core, the transverse ejector rod slides to penetrate through the electromagnet valve body to abut against the first ejector moving assembly, and an exhaust port communicated with an exhaust channel is arranged on the electromagnet valve body.
7. The high temperature resistant zero leakage solenoid valve of claim 1, wherein: the second jacking component comprises a second ejector rod, a second plugging block and a second ejector block which are sequentially connected from left to right, a second reset spring is arranged at the right end of the second ejector block, and the second ejector rod penetrates through the air inlet channel and is propped against the right end of the sliding block.
8. The high temperature resistant zero leakage solenoid valve of claim 5, wherein: the high-temperature valve body assembly comprises a high Wen Fake, the high Wen Fake is connected with the lower end of the piston shell in a sealing way, a high-temperature gas channel is arranged in the high Wen Fake, a valve hole which is convenient for a vertical valve rod to pass through in a sealing way is arranged at the upper end of the high Wen Fake, the valve hole is communicated with the high-temperature gas channel, and heat-insulating sealing blocks are arranged on the inner walls of the high-temperature gas channel and the valve hole.
9. The method of using a high temperature resistant zero leakage solenoid valve according to any one of claims 1 to 8, comprising the steps of:
(1) After the electromagnet assembly is electrified, the first jacking assembly, the sliding block and the second jacking assembly are driven to move rightwards, the locking assembly locks the sliding block, the exhaust channel is closed, and the air inlet channel is opened;
(2) The pilot gas sequentially passes through the air inlet channel, the pilot cavity and the conveying channel and then enters the elastic air bag, and after the elastic air bag is inflated, the piston assembly is pushed to move downwards to close the high-temperature valve body assembly;
(3) After the electromagnet assembly is powered off, the locking assembly releases the sliding block, the second jacking assembly drives the sliding block to move left, the exhaust channel is opened, the air inlet channel is closed, pilot gas is discharged through the exhaust channel, the elastic air bag is deflated, the piston assembly moves upwards, and the high-temperature valve body assembly is opened.
10. The method of claim 9, wherein in step (1), the method of locking the slider by the locking assembly is as follows: after the electromagnet assembly is electrified, the first jacking assembly drives the sliding block to move right to drive the second limiting groove to move to the limiting through hole, meanwhile, the first jacking block drives the first magnet to move right, the first reset spring is compressed, the first magnet is attracted with the second magnet, the support spring is compressed, the sliding plate moves left to enable the limiting ball to be contracted into the limiting through hole and the second limiting groove, and the sliding block is locked;
in the step (3), the method for loosening the sliding block by the locking assembly is as follows: after the electromagnet assembly is powered off, the first reset spring drives the first magnet to move left, the attraction force of the first magnet and the attraction force of the second magnet are weakened, the support spring drives the sliding plate to reset, the first limiting groove moves to the limiting through hole, the second jacking assembly drives the sliding block to move left, the limiting ball is contracted into the limiting through hole and the first limiting groove, and the sliding block is loosened.
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| CN117231757B (en) | 2024-01-26 |
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