CN118728998A - Explosion-proof two-position five-way electromagnetic reversing valve - Google Patents
Explosion-proof two-position five-way electromagnetic reversing valve Download PDFInfo
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- CN118728998A CN118728998A CN202411207337.XA CN202411207337A CN118728998A CN 118728998 A CN118728998 A CN 118728998A CN 202411207337 A CN202411207337 A CN 202411207337A CN 118728998 A CN118728998 A CN 118728998A
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- 238000007789 sealing Methods 0.000 claims abstract description 71
- 230000000712 assembly Effects 0.000 claims abstract description 8
- 238000000429 assembly Methods 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 description 10
- 238000005299 abrasion Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The invention relates to the field of reversing valves, in particular to an explosion-proof two-position five-way electromagnetic reversing valve, which comprises a valve body and a valve rod, wherein the valve body is provided with an air inlet, a first air outlet, a second air outlet, a first air outlet and a second air outlet, a circulating air passage which can be communicated with the air inlet and extend to two ends of the valve body, and an air guide structure which is respectively arranged at two ends of the valve body and can be matched with the corresponding circulating air passage to push the valve rod to move, the valve rod is provided with a flat ring, a node corresponding to the flat ring is arranged in the valve body, and a sealing ring is arranged at the node, and both ends of the valve rod are also provided with coaxial sealing assemblies.
Description
Technical Field
The invention relates to the field of reversing valves, in particular to an explosion-proof two-position five-way electromagnetic reversing valve.
Background
The valve type product is widely applied to fluid control in various technical fields, the two-position five-way electromagnetic valve is one of the two-position five-way electromagnetic valves, the valve body is provided with five air ports, namely an air inlet, two air outlets and two air outlets, the valve rod can reciprocate at two positions, the valve rod is utilized to axially move to realize switching of an air passage during working, the traditional electromagnetic valve is provided with a plurality of flat rings outside the valve rod, the valve rod axially moves and is in sealing contact with or separated from the inner wall of the valve body, so that switching of the air passage is realized, and the flat rings are made of rubber materials generally, so that friction resistance is increased, sensitivity is lower, abrasion is easy to occur to the flat rings when the valve rod frequently moves, air leakage phenomenon occurs in the valve body, and the working performance and the service life of the valve are influenced.
The currently disclosed China patent CN106895176B two-position five-way ceramic slide plate type electromagnetic valve comprises a valve body, a valve rod movably arranged in a valve cavity of the valve body, a left end cover and a right end cover respectively arranged at two ends of the valve body, a valve plate is arranged at the bottom of the valve body, a ceramic slide plate is fixed on the inner side wall of the valve plate, a first air outlet, an air inlet, a second air outlet and a second air outlet are sequentially arranged on the valve plate and the ceramic slide plate in a matching manner from left to right, a slide block matched with the ceramic slide plate in a sliding manner is arranged in the middle of the valve rod, and a first groove and a second groove for switching air paths are arranged on the side face of the slide block, which is attached to the ceramic slide plate; the left end of valve rod is equipped with little piston assembly, the right-hand member of valve rod is equipped with big piston, little piston assembly's pressurized area is less than big piston's pressurized area, little piston assembly with be formed with left cavity between the left end cover, big piston with be formed with right cavity between the right end cover, the valve pocket respectively through first gas passage with left cavity intercommunication, through second gas passage with right cavity intercommunication, still be provided with on the valve body and be used for controlling second gas passage switches on or cuts off the guide's subassembly.
According to the patent, the sliding block which is in sliding fit with the ceramic sliding plate is arranged in the middle of the valve rod, the first groove and the second groove are arranged on the surface of the sliding block, which is jointed with the ceramic sliding plate, when the valve rod moves axially under the action of pressure difference, the sliding block also moves along with the valve rod relative to the ceramic sliding plate, and the switching of the air passage is realized under the cooperation of the first groove and the second groove, however, although the patent is not easy to wear compared with the prior art, the occurrence of the air leakage phenomenon is avoided, but although abrasion and air leakage are reduced, due to the sliding fit between the slider and the ceramic slide plate and the simple movement switching mechanism of the first and second grooves, coaxiality between the slider and the ceramic slide plate is difficult to ensure under high pressure difference or frequent operation, so that displacement deviation is caused, sealing performance and air path switching accuracy are affected, and therefore, a valve rod sliding structure capable of ensuring that sealing performance is not affected is needed at present.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides the explosion-proof two-position five-way electromagnetic reversing valve, and the valve rod and the valve cavity are sealed together in a sliding state through the coaxial sealing assembly, so that the sealing transmission of gas in a specific channel inside the valve body is ensured, the leakage is avoided, the flat ring matched with the sealing ring can be accurately butted together, and the sealing failure caused by movement deviation is avoided.
In order to solve the problems in the prior art, the invention provides an explosion-proof two-position five-way electromagnetic reversing valve, which comprises a valve body and a valve rod which is arranged in a valve cavity of the valve body and can move, wherein the valve body is provided with an air inlet, a first air outlet, a second air outlet, a first air outlet and a second air outlet which are communicated with the valve body, the valve body is also provided with a ventilation air passage which can be communicated with the air inlet and extends to two ends of the valve body, and air guide structures which are respectively arranged at two ends of the valve body and can be matched with the corresponding ventilation air passage to push the valve rod to move, the valve rod is provided with a plurality of flat rings, the valve body is internally provided with a plurality of nodes corresponding to the flat rings, each node is provided with a sealing ring which can be contacted with the corresponding flat ring, and two ends of the valve rod are also provided with coaxial sealing assemblies which are in sliding connection with the valve cavity of the valve body, and the coaxial sealing assemblies are used for keeping the flat rings in accurate alignment and close contact with the sealing rings.
Preferably, the surfaces which can be contacted with each other between the sealing ring and the corresponding flat ring are all inclined fit surfaces, and when the sealing ring is contacted with the corresponding flat ring, the fit surfaces of the sealing ring and the corresponding flat ring are mutually fit, so that the passage at the position is sealed.
Preferably, the coaxial sealing assembly comprises a sliding sleeve fixedly sleeved on the valve rod and capable of being inserted into the valve cavity of the valve body in a sliding mode, and the sliding sleeve is used for keeping coaxiality of the valve rod in the moving process of the valve cavity.
Preferably, the coaxial sealing assembly further comprises a connecting piece arranged between the sliding sleeve and the valve body and used for ensuring that the sliding sleeve and the valve body are in a sealing state.
Preferably, the connector is of a flexible construction capable of following movement of the valve stem while maintaining a sealed condition with the valve body.
Preferably, the connecting piece is specifically a bag sleeve sleeved on the valve rod, one end of the bag sleeve is fixedly connected with the sliding sleeve, the other end of the bag sleeve is fixedly connected with the valve body, and when the valve rod moves, the bag sleeve deforms along with the movement of the valve rod, so that the end part of the valve rod is always in a sealing state with the valve body.
Preferably, a sliding gap is reserved between the sliding sleeve and the valve cavity of the valve body, a ball is arranged between the sliding sleeve and the valve body, the ball is in rolling contact with the valve body, and a groove in which the ball is embedded and can rotate is formed in the outer surface of the sliding sleeve.
Preferably, the outer end of the sliding sleeve is provided with an extending edge which extends outwards perpendicular to the whole body direction of the sliding sleeve, both ends of the valve body are provided with extending ends which can be contacted with the extending edges of the corresponding sliding sleeve, when the extending edges of the sliding sleeve are contacted with the extending ends, a passage between the air inlet and the first air outlet or the second air outlet is in an opened state, and meanwhile, the first air outlet or the second air outlet is in a closed state.
Preferably, the air guide structure is provided with an air guide end cover fixed at the end part of the valve body and a coil assembly capable of controlling air circulation, the end part of the valve rod is provided with a piston which is arranged in the air guide end cover in a sliding manner, the air guide end cover is provided with an air guide hole capable of enabling compressed air to act on the piston, and a control air hole communicated with the circulation air channel, when the coil assembly is used for communicating the control air hole with the air guide hole, the compressed air sequentially enters the air guide end cover from the circulation air channel, the control air hole and the air guide hole, so that the piston is pushed under pressure.
Preferably, the coil assembly comprises a movable iron core and a static iron core, a pressure spring is arranged between the movable iron core and the static iron core, a boss is arranged in a region of the air guide end cover surrounding the control air hole, when the coil assembly is not electrified, the pressure spring is in a state of being not acted by external force, and the movable iron core is in contact with the boss at the moment, so that the control air hole is closed.
Compared with the prior art, the application has the beneficial effects that:
1. According to the invention, the two ends of the valve rod are sealed with the valve cavity in a sliding state through the coaxial sealing assembly, even if the valve rod moves repeatedly, the valve rod can maintain close contact with the valve cavity wall, and gaps caused by vibration or pressure fluctuation are prevented, so that the sealing transmission of gas in a specific channel inside the valve body is ensured, leakage is avoided, the flat ring matched with the sealing ring can be accurately butted together, sealing failure caused by movement deviation is avoided, abrasion of the flat ring is avoided, and the requirement of frequent maintenance or replacement caused by sealing failure is reduced.
2. According to the invention, the sealing contact area is increased through the inclined fit surface of the flat ring and the sealing ring, the sealing tightness is improved, the gas leakage is effectively prevented, and compared with the traditional mode that the flat ring is abutted with the node, the abrasion rate of the flat ring is greatly reduced, the service life of the flat ring is prolonged, and the maintenance cost and the replacement frequency are reduced.
Drawings
Fig. 1 is a schematic perspective view of an explosion-proof two-position five-way electromagnetic reversing valve.
Fig. 2 is a plan sectional view of the explosion-proof two-position five-way electromagnetic reversing valve.
Fig. 3 is a perspective structural sectional view of the explosion-proof two-position five-way electromagnetic reversing valve.
Fig. 4 is a plan sectional view at A-A of fig. 2.
Fig. 5 is a plan sectional view at B-B of fig. 4.
Fig. 6 is a schematic diagram of a state in which an air inlet of the flameproof two-position five-way electromagnetic reversing valve is communicated with a first air outlet.
Fig. 7 is a schematic diagram of a state in which an air inlet of the flameproof two-position five-way electromagnetic reversing valve is communicated with a second air outlet.
Fig. 8 is an enlarged schematic view at C of fig. 2.
Fig. 9 is an enlarged schematic view at D of fig. 2.
Fig. 10 is an enlarged schematic view at E of fig. 2.
Fig. 11 is a plan view of the air guide structure of the flameproof two-position five-way electromagnetic directional valve.
The reference numerals in the figures are: 1. a valve body; 11. an air inlet; 12. a first air outlet; 13. a second air outlet; 14. a first exhaust port; 15. a second exhaust port; 16. a flow-through airway; 2. a valve stem; 21. a flat ring; 211. a node; 22. a seal ring; 3. an air guide end cover; 31. a piston; 311. an air guide hole; 312. controlling the air holes; 3121. a boss; 32. a movable iron core; 33. a stationary core; 34. a pressure spring; 4. a coaxial seal assembly; 41. a sliding sleeve; 411. a ball; 412. an extension edge; 413. an extension end; 42. a bag sleeve.
Detailed Description
The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
Referring to fig. 1-7, the explosion-proof two-position five-way electromagnetic reversing valve comprises a valve body 1 and a valve rod 2 which is arranged in a valve cavity of the valve body 1 and can move, wherein the valve body 1 is provided with an air inlet 11, a first air outlet 12, a second air outlet 13, a first air outlet 14 and a second air outlet 15 which are communicated with the valve body 1, the valve body 1 is also provided with a ventilation channel 16 which can be communicated with the air inlet 11 and extends to two ends of the valve body 1, and air guide structures which are respectively arranged at two ends of the valve body 1 and can be matched with the corresponding ventilation channel 16 to push the valve rod 2 to move, the valve rod 2 is provided with a plurality of flat rings 21, a plurality of nodes 211 corresponding to the flat rings 21 are arranged in the valve body 1, each node 211 is provided with a sealing ring 22 which can be contacted with the corresponding flat ring 21, two ends of the valve rod 2 are also provided with coaxial sealing assemblies 4 which are connected with the valve cavity of the valve body 1 in a sliding manner, and the coaxial sealing assemblies 4 are used for keeping the flat rings 21 in precise alignment and close contact with the sealing rings 22.
When the valve body 1 is installed, the air inlet 11 is communicated with a working air source, in an initial state, the air inlet 11 is communicated with the first air outlet 12, the second air outlet 13 is communicated with the second air outlet 15, the first air outlet 14 is in a closed state, when the air guide structure acts, the passage between the circulating air passage 16 and the air guide structure is communicated, part of compressed air in the air inlet 11 enters the air guide structure through the air passage 16, the air guide structure acts on the valve rod 2 to enable the valve rod 2 to move under the action of air pressure, at the moment, the air inlet 11 is communicated with the second air outlet 13, the first air outlet 14 is communicated with the first air outlet 12, the second air outlet 15 is in a closed state, so that the air passage reversing operation is realized, namely, in the moving process of the valve rod 2, the flat ring 21 on the air guide structure is contacted with the sealing ring 22 on the node 211 inside the valve body 1 and tightly sealed, the movement of the valve rod 2 changes the communication relation between the air ports, so that a new air path connection is established between the air inlet 11 and the second air outlet 13, meanwhile, the first air outlet 14 and the first air outlet 12 are opened, the air is allowed to be discharged, the second air outlet 15 is closed, thereby realizing the reversing operation of the air path, and during the movement of the valve rod 2, the coaxial sealing assemblies 4 at the two ends ensure good sliding sealing between the valve rod 2 and the valve cavity of the valve body 1, ensure that the air cannot leak from the gap between the valve rod 2 and the valve body 1, enhance the whole air tightness, ensure the accurate contact between the flat ring 21 and the sealing ring 22, avoid the poor sealing condition caused by the deviation of the flat ring 21 from the position of the sealing ring 22, maintain the close contact with the valve cavity wall even under the condition of the repeated movement of the valve rod 2, prevent the gap caused by vibration or pressure fluctuation, therefore, the sealing transmission of the gas in the specific channel inside the valve body 1 is ensured, leakage is avoided, after the gas channel is switched into place, the gas guide structure stops supplying gas, the valve rod 2 is kept at a new position due to the maintenance of the gas pressure, and the reversing state of the gas channel is maintained until the next operation instruction arrives.
As shown in fig. 6 to 9, the surfaces of the seal ring 22 and the corresponding flat ring 21 that can be in contact with each other are inclined mating surfaces, and when the seal ring 22 and the corresponding flat ring 21 are in contact with each other, the mating surfaces of the two are in contact with each other, so that the passage is sealed.
When the air guide structure is activated, the valve rod 2 starts to move under the action of air pressure to drive the flat ring 21 connected with the valve rod to move towards the corresponding sealing ring 22, and along with the movement of the valve rod 2, the inclined fit surface on the flat ring 21 gradually approaches to and finally is attached to the inclined fit surface of the sealing ring 22 at the corresponding position inside the valve body 1, so that the contact moment can be mutually locked with a larger contact area and a tight attachment degree to form a reliable sealing interface, and when the fit surfaces of the sealing ring 22 and the flat ring 21 are completely attached, the passage between the sealing ring 22 and the flat ring 21 is effectively sealed, and meanwhile, the air passage is switched to a preset open or closed state, thereby realizing the accurate control of the air flow direction and preventing air leakage.
Referring to fig. 2, 3 and 10, the coaxial sealing assembly 4 comprises a sliding sleeve 41 fixedly sleeved on the valve rod 2 and slidably inserted in the valve cavity of the valve body 1, wherein the sliding sleeve 41 is used for maintaining coaxiality of the valve rod 2 during moving in the valve cavity.
In the installation process, the valve rod 2 is inserted into the valve cavity of the valve body 1 together with the sliding sleeve 41, the inner diameter of the sliding sleeve 41 is tightly matched with the outer diameter of the valve rod 2 in size, and meanwhile the sliding sleeve 41 slides in the valve cavity, so that the valve rod 2 is coaxial with the valve cavity to allow the valve rod 2 to move smoothly without affecting air tightness, and when the valve rod 2 moves axially under the action of air pressure, the sliding sleeve 41 slides together with the valve rod 2, so that the moving path of the valve rod 2 is ensured to be consistent with the central axis of the valve body 1, namely, coaxiality is maintained, and the contact between the flat ring 21 and the sealing ring 22 is kept in a coaxial state, thereby improving the sealing effect.
Referring to fig. 2,3 and 10, the coaxial sealing assembly 4 further comprises a connecting member disposed between the sliding sleeve 41 and the valve body 1 to ensure that the two are in a sealed state.
Along with the sliding sleeve 41 sliding along the valve cavity under the drive of the valve rod 2, the connecting piece plays a sealing role between the sliding sleeve 41 and the valve body 1 to form a reliable sealing interface, and the leakage of gas from a tiny gap between the sliding sleeve 41 and the valve body 1 is effectively prevented.
As shown in fig. 2, 3 and 10, the connector is a flexible structure capable of always maintaining a sealed state with the valve body 1 following the movement of the valve stem 2.
When the valve rod 2 moves along the axial direction, the flexible connecting piece moves along with the valve rod 2, no matter where the valve rod 2 is, the connecting piece can conform to the internal contour of the valve body 1 through deformation of the connecting piece, a continuous and tight sealing interface is formed, and the air tightness is ensured to be maintained even in the dynamic process of the movement of the valve rod 2, so that gas leakage is prevented.
Referring to fig. 2, 3 and 10, the connecting piece is specifically a bag sleeve 42 sleeved on the valve rod 2, one end of the bag sleeve 42 is fixedly connected with the sliding sleeve 41, the other end of the bag sleeve 42 is fixedly connected with the valve body 1, and when the valve rod 2 moves, the bag sleeve 42 deforms along with the movement of the valve rod 2, so that the end part of the valve rod 2 and the valve body 1 are always in a sealing state.
When the valve rod 2 moves along the axial direction of the valve body 1, the bag sleeve 42 moves along with the valve rod 1 and generates necessary deformation, so that the valve rod can adapt to the length change in the moving process of the valve rod 2, meanwhile, the contact part of the valve rod 2 and the valve body 1 is kept tightly attached, due to the deformation capability of the bag sleeve 42, even if the valve rod 2 moves, the two ends of the bag sleeve 42 can form reliable sealing with the end part of the valve rod 2 and the valve body 1, the leakage of gas is effectively prevented, and compared with the rigid contact, the direct friction between the valve rod 2 and the valve body 1 is reduced, and the abrasion is reduced.
Referring to fig. 2, 3 and 10, a sliding gap is left between the sliding sleeve 41 and the valve cavity of the valve body 1, a ball 411 is arranged between the sliding sleeve 41 and the valve body 1, the ball 411 is in rolling contact with the valve body 1, and a groove in which the ball 411 is embedded and can rotate is formed in the outer surface of the sliding sleeve 41.
When the sliding sleeve 41 moves along the valve cavity, the balls 411 roll along the inner wall of the valve body 1, friction between the valve rod 2 and the valve body 1 is avoided, a sliding clearance is kept, and meanwhile, the balls 411 still provide support for the movement of the sliding sleeve 41, so that the coaxiality between the valve rod 2 and the valve body 1 is ensured, and the stability of the valve rod 2 in the moving process is improved.
Referring to fig. 2, 3 and 10, the outer end of the sliding sleeve 41 has an extension edge 412 extending outwardly perpendicular to the circumferential direction thereof, and both ends of the valve body 1 have extension ends 413 capable of contacting the extension edge 412 of the corresponding sliding sleeve 41, and when the extension edge 412 of the sliding sleeve 41 contacts the extension ends 413, the passage between the air inlet 11 and the first air outlet 12 or the second air outlet 13 is in an opened state, while the first air outlet 14 or the second air outlet 15 is in a closed state.
When the valve rod 2 drives the sliding sleeve 41 to move to a specific position along the valve cavity, the extending edge 412 of the sliding sleeve 41 contacts with the extending end 413 of the valve body 1, at this time, the air inlet 11 is communicated with the first air outlet 12 or the second air outlet 13, and meanwhile, the first air outlet 14 or the second air outlet 15 is closed due to sealing effect, so that the opening and closing of the air path are flexibly controlled, and the accurate switching of the air flow direction is ensured.
Referring to fig. 2,3 and 11, the air guide structure has an air guide end cap 3 fixed at the end of the valve body 1, and a coil assembly capable of controlling the air flow, the end of the valve rod 2 is provided with a piston 31 slidably disposed in the air guide end cap 3, the air guide end cap 3 has an air guide hole 311 capable of applying compressed air to the piston 31, and a control air hole 312 communicating with the air passage 16, and when the coil assembly communicates the control air hole 312 with the air guide hole 311, compressed air sequentially enters the air guide end cap 3 from the air passage 16, the control air hole 312 and the air guide hole 311, so that the piston 31 is pushed under pressure.
When the coil assembly receives an electric signal and is electrified, under the action of electromagnetic force, the internal structure of the coil assembly is changed, so that a passage between the control air hole 312 and the air guide hole 311 is opened, along with the opening of the control air hole 312, part of compressed air flows in from the air passage 16, passes through the control air hole 312 and then directly acts on the piston 31, the air pressure pushes the piston 31 to move along the inside of the air guide end cover 3, and then drives the valve rod 2 to move, the air passage configuration in the valve body 1 is changed along with the movement of the valve rod 2, the switching of the air passage is realized, when the electromagnetic driving instruction is finished, the coil assembly is powered off, the passage between the control air hole 312 and the air guide hole 311 is closed, the coil assembly at the other end of the valve body 1 is electrified, so that the compressed air enters the corresponding air guide end cover 3, and the piston 31 at the position is impacted, so that the air passage is switched again, and a complete air passage switching period is completed.
Referring to fig. 2, 3 and 11, the coil assembly includes a movable iron core 32 and a stationary iron core 33, a compression spring 34 is disposed between the movable iron core 32 and the stationary iron core 33, a boss 3121 is disposed in a region of the air guide end cover 3 surrounding the control air hole 312, when the coil assembly is not energized, the compression spring 34 is in a state of not being acted by an external force, and at this time, the movable iron core 32 contacts the boss 3121, so that the control air hole 312 is closed.
The specific working process of the coil assembly is that when the movable iron core 32 and the static iron core 33 are not electrified, the pressure spring 34 is in a state of not being acted by external force, at the moment, the movable iron core 32 is in contact with the boss 3121 on the air guide end cover 3, so that the control air hole 312 is ensured to be closed, air flow is prevented from entering the air guide end cover 3 from the air passage 16 through the control air hole 312 along the air guide hole 311, the air passage maintains an initial state, namely, the current air passage configuration is maintained unchanged, such as the communication state of the air inlet 11 and the first air outlet 12 or the second air outlet 13, and when the movable iron core 32 and the static iron core 33 are electrified, the movable iron core 32 is far away from the raised strips, the pressure spring 34 is compressed, at the moment, the control air hole 312 is opened, and air in the air passage 16 is allowed to act on the piston 31 sequentially through the control air hole 312 and the air guide hole 311, so that the valve rod 2 moves, and air passage switching is realized.
According to the invention, the valve rod 2 and the valve cavity are sealed together in a sliding state through the coaxial sealing assembly 4, even if the valve rod 2 moves repeatedly, the valve rod can maintain close contact with the valve cavity wall, and gaps caused by vibration or pressure fluctuation are prevented, so that the sealing transmission of gas in a specific channel inside the valve body 1 is ensured, leakage is avoided, the flat ring 21 matched with the sealing ring 22 can be accurately butted together, sealing failure caused by movement deviation is avoided, abrasion of the flat ring 21 is avoided, and the requirement of frequent maintenance or replacement caused by sealing failure is reduced.
The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.
Claims (10)
1. The explosion-proof two-position five-way electromagnetic reversing valve comprises a valve body (1) and a valve rod (2) which is arranged in a valve cavity of the valve body (1) and can move, wherein the valve body (1) is provided with an air inlet (11), a first air outlet (12), a second air outlet (13), a first air outlet (14) and a second air outlet (15) which are communicated with the valve body, the valve body (1) is also provided with a flow passage (16) which can be communicated with the air inlet (11) and extends to two ends of the valve body (1), and air guide structures which are respectively arranged at two ends of the valve body (1) and can be matched with the corresponding flow passage (16) to push the valve rod (2) to move;
the valve is characterized in that a plurality of flat rings (21) are arranged on the valve rod (2), a plurality of nodes (211) corresponding to the flat rings (21) are arranged in the valve body (1), sealing rings (22) which can be contacted with the corresponding flat rings (21) are arranged at the positions of each node (211), coaxial sealing assemblies (4) which are in sliding connection with valve cavities of the valve body (1) are also arranged at two ends of the valve rod (2), and the coaxial sealing assemblies (4) are used for keeping the contact of the flat rings (21) and the sealing rings (22) accurately aligned and in close contact.
2. The explosion-proof two-position five-way electromagnetic reversing valve according to claim 1, wherein the surfaces which can be contacted with each other between the sealing ring (22) and the corresponding flat ring (21) are all inclined fit surfaces, and when the sealing ring (22) and the corresponding flat ring (21) are contacted, the fit surfaces of the sealing ring (22) and the corresponding flat ring (21) are mutually fit, so that a passage at the position is sealed.
3. The explosion-proof two-position five-way electromagnetic reversing valve according to claim 1, wherein the coaxial sealing assembly (4) comprises a sliding sleeve (41) fixedly sleeved on the valve rod (2) and capable of being slidably inserted into a valve cavity of the valve body (1), and the sliding sleeve (41) is used for keeping coaxiality of the valve rod (2) in the moving process of the valve cavity.
4. The explosion-proof two-position five-way electromagnetic reversing valve according to claim 3, wherein the coaxial sealing assembly (4) further comprises a connecting piece which is arranged between the sliding sleeve (41) and the valve body (1) and used for ensuring the sealing state of the sliding sleeve and the valve body.
5. The explosion-proof two-position five-way electromagnetic reversing valve according to claim 4, wherein the connecting piece is of a flexible structure capable of always keeping a sealing state with the valve body (1) along with the movement of the valve rod (2).
6. The explosion-proof two-position five-way electromagnetic reversing valve according to claim 5, wherein the connecting piece is specifically a bag sleeve (42) sleeved on the valve rod (2), one end of the bag sleeve (42) is fixedly connected with the sliding sleeve (41), the other end of the bag sleeve (42) is fixedly connected with the valve body (1), and when the valve rod (2) moves, the bag sleeve (42) deforms along with the movement of the valve rod (2) so that the end part of the valve rod (2) is always in a sealing state with the valve body (1).
7. The explosion-proof two-position five-way electromagnetic reversing valve according to claim 3, wherein a sliding gap is reserved between the sliding sleeve (41) and the valve cavity of the valve body (1), a ball (411) is arranged between the sliding sleeve (41) and the valve body (1), the ball (411) is in rolling contact with the valve body (1), and a groove in which the ball (411) is embedded and can rotate is formed in the outer surface of the sliding sleeve (41).
8. The explosion-proof two-position five-way electromagnetic reversing valve according to claim 7, characterized in that the outer end of the sliding sleeve (41) is provided with an extending edge (412) extending outwards perpendicular to the circumferential direction of the sliding sleeve, both ends of the valve body (1) are provided with extending ends (413) which can be contacted with the extending edge (412) of the corresponding sliding sleeve (41), when the extending edge (412) of the sliding sleeve (41) is contacted with the extending ends (413), a passage between the air inlet (11) and the first air outlet (12) or the second air outlet (13) is in an opened state, and meanwhile, the first air outlet (14) or the second air outlet (15) is in a closed state.
9. The explosion-proof two-position five-way electromagnetic reversing valve according to claim 1, wherein the air guide structure is provided with an air guide end cover (3) fixed at the end part of the valve body (1) and a coil assembly capable of controlling air circulation, the end part of the valve rod (2) is provided with a piston (31) which is arranged in the air guide end cover (3) in a sliding way, the air guide end cover (3) is provided with an air guide hole (311) capable of enabling compressed air to act on the piston (31), and the air guide end cover is provided with a control air hole (312) communicated with the circulation air channel (16), and when the coil assembly is communicated with the air guide hole (311), the compressed air sequentially enters the air guide end cover (3) from the circulation air channel (16), the control air hole (312) and the air guide hole (311) so that the piston (31) is pushed under pressure.
10. The explosion-proof two-position five-way electromagnetic reversing valve according to claim 9, wherein the coil assembly comprises a movable iron core (32) and a static iron core (33), a pressure spring (34) is arranged between the movable iron core (32) and the static iron core (33), a boss (3121) is arranged in the area of the air guide end cover (3) surrounding the control air hole (312), when the coil assembly is not electrified, the pressure spring (34) is in a state of being not acted by external force, and the movable iron core (32) is in contact with the boss (3121) at the moment, so that the control air hole (312) is closed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411207337.XA CN118728998B (en) | 2024-08-30 | Explosion-proof two-position five-way electromagnetic reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411207337.XA CN118728998B (en) | 2024-08-30 | Explosion-proof two-position five-way electromagnetic reversing valve |
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| Publication Number | Publication Date |
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| CN118728998A true CN118728998A (en) | 2024-10-01 |
| CN118728998B CN118728998B (en) | 2024-11-15 |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5535783A (en) * | 1994-06-17 | 1996-07-16 | Smc Corporation | Balanced type direct-acting electromagnetic valve |
| JP2002257255A (en) * | 2001-02-28 | 2002-09-11 | Ckd Corp | Pilot-type solenoid valve and fluid pressure cylinder |
| CN1924409A (en) * | 2005-09-01 | 2007-03-07 | Smc株式会社 | Flow rate control valve |
| CN204226735U (en) * | 2014-10-28 | 2015-03-25 | 奉化鑫益气动工程有限公司 | A kind of Mini two-position five-way solenoid valve |
| CN104879530A (en) * | 2015-04-03 | 2015-09-02 | 上海高迪亚电子系统有限公司 | Plunger type four-way electromagnetic reversing valve |
| CN105090559A (en) * | 2015-08-31 | 2015-11-25 | 宁波索诺工业自控设备有限公司 | Cut-off type two-position five-way electromagnetic valve |
| CN204878857U (en) * | 2015-08-28 | 2015-12-16 | 博世力士乐（常州）有限公司 | Switching -over valve and fluid tight subassembly |
| CN204900928U (en) * | 2015-07-02 | 2015-12-23 | 宁波飞泰工业自控设备有限公司 | Pneumatic type solenoid valve |
| CN206329765U (en) * | 2016-12-05 | 2017-07-14 | 宁波晨光威腾自动化机械有限公司 | A kind of two-position-five-way solenoid valve |
| JP2020046031A (en) * | 2018-09-20 | 2020-03-26 | 株式会社不二工機 | Spool valve |
| CN212690918U (en) * | 2020-07-07 | 2021-03-12 | 泽佩控制设备(上海)有限公司 | Novel two-position five-way electromagnetic valve |
| CN213711974U (en) * | 2020-11-30 | 2021-07-16 | 山东耐德士汽车零部件有限公司 | Hydraulic control reversing valve |
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5535783A (en) * | 1994-06-17 | 1996-07-16 | Smc Corporation | Balanced type direct-acting electromagnetic valve |
| JP2002257255A (en) * | 2001-02-28 | 2002-09-11 | Ckd Corp | Pilot-type solenoid valve and fluid pressure cylinder |
| CN1924409A (en) * | 2005-09-01 | 2007-03-07 | Smc株式会社 | Flow rate control valve |
| CN204226735U (en) * | 2014-10-28 | 2015-03-25 | 奉化鑫益气动工程有限公司 | A kind of Mini two-position five-way solenoid valve |
| CN104879530A (en) * | 2015-04-03 | 2015-09-02 | 上海高迪亚电子系统有限公司 | Plunger type four-way electromagnetic reversing valve |
| CN204900928U (en) * | 2015-07-02 | 2015-12-23 | 宁波飞泰工业自控设备有限公司 | Pneumatic type solenoid valve |
| CN204878857U (en) * | 2015-08-28 | 2015-12-16 | 博世力士乐（常州）有限公司 | Switching -over valve and fluid tight subassembly |
| CN105090559A (en) * | 2015-08-31 | 2015-11-25 | 宁波索诺工业自控设备有限公司 | Cut-off type two-position five-way electromagnetic valve |
| CN206329765U (en) * | 2016-12-05 | 2017-07-14 | 宁波晨光威腾自动化机械有限公司 | A kind of two-position-five-way solenoid valve |
| JP2020046031A (en) * | 2018-09-20 | 2020-03-26 | 株式会社不二工機 | Spool valve |
| CN212690918U (en) * | 2020-07-07 | 2021-03-12 | 泽佩控制设备(上海)有限公司 | Novel two-position five-way electromagnetic valve |
| CN213711974U (en) * | 2020-11-30 | 2021-07-16 | 山东耐德士汽车零部件有限公司 | Hydraulic control reversing valve |
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