WO2023092823A1 - 一种针阀泄压的气动装置、一种气控排水阀及一种水箱 - Google Patents

一种针阀泄压的气动装置、一种气控排水阀及一种水箱 Download PDF

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Publication number
WO2023092823A1
WO2023092823A1 PCT/CN2021/144018 CN2021144018W WO2023092823A1 WO 2023092823 A1 WO2023092823 A1 WO 2023092823A1 CN 2021144018 W CN2021144018 W CN 2021144018W WO 2023092823 A1 WO2023092823 A1 WO 2023092823A1
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WIPO (PCT)
Prior art keywords
pressure relief
inflatable
pneumatic device
self
needle valve
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PCT/CN2021/144018
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English (en)
French (fr)
Inventor
谢炜
蔡明建
余角锋
江移山
Original Assignee
箭牌家居集团股份有限公司
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Application filed by 箭牌家居集团股份有限公司 filed Critical 箭牌家居集团股份有限公司
Publication of WO2023092823A1 publication Critical patent/WO2023092823A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D5/00—Special constructions of flushing devices, e.g. closed flushing system
    • E03D5/10—Special constructions of flushing devices, e.g. closed flushing system operated electrically, e.g. by a photo-cell; also combined with devices for opening or closing shutters in the bowl outlet and/or with devices for raising/or lowering seat and cover and/or for swiveling the bowl
    • E03D5/105—Special constructions of flushing devices, e.g. closed flushing system operated electrically, e.g. by a photo-cell; also combined with devices for opening or closing shutters in the bowl outlet and/or with devices for raising/or lowering seat and cover and/or for swiveling the bowl touchless, e.g. using sensors
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
    • E03D1/24—Low-level flushing systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
    • E03D1/30—Valves for high or low level cisterns; Their arrangement ; Flushing mechanisms in the cistern, optionally with provisions for a pre-or a post- flushing and for cutting off the flushing mechanism in case of leakage
    • E03D1/34—Flushing valves for outlets; Arrangement of outlet valves

Definitions

  • the invention relates to the technical field of pneumatic devices, in particular to a pneumatic device for releasing pressure with a needle valve, an air-controlled drain valve and a water tank.
  • non-contact drain valves are gradually applied to smart toilets. Due to the lack of mechanical actuation for manual pressing, the non-contact drain valve requires an additional pneumatic device to trigger the activation of the drain valve.
  • the pneumatic device commonly used in the market is composed of an air pump, an air bag and a pressure relief valve.
  • the air pump When drainage is required, the air pump is started to inflate the air bag.
  • Some pneumatic devices do not have a pressure relief function. After the air pump triggers the drain valve to open through the air bag to drain water, the entire air circuit is filled with pressurized gas. Push against the opening switch of the drain valve so that the drain cannot be stopped.
  • the existing pneumatic device usually needs to be equipped with a special pressure relief module, add a solenoid valve, and exhaust the air bag through the gas circuit conversion to achieve pressure relief, but this solution requires an additional solenoid valve and Components such as pipelines and circuits are costly, complex in structure, large in space, messy in internal wiring, and very troublesome in assembly and maintenance.
  • the technical problem to be solved by the present invention is to provide a needle valve pressure relief pneumatic device, which can automatically perform pressure relief after inflation, is reliable in operation, has a very simple structure, can save electrical components, and has low cost.
  • the present invention provides a pneumatic device for needle valve pressure relief, which includes a housing, an air intake cover, an inflatable telescopic member, a follower and a self-pressure relief member, the air intake cover is fixed on the The upper part of the housing is in sealing communication with the inflatable telescopic part, the air intake cover can be inflated into the inflatable telescopic part, and the inflatable telescopic part can expand and elongate in the casing after being inflated, and the driven The part is connected to the movable end of the inflatable telescopic part, and the driven part can reach the bottom of the casing.
  • the pneumatic device for needle valve pressure relief also includes an opening and closing mechanism, the self-pressure relief part is connected to the movable end of the inflatable telescopic part, and the self-pressure relief part is provided with an exhaust section.
  • the opening and closing mechanism can isolate the inner cavity of the exhaust section and the inflatable telescopic part from each other; after the inflatable telescopic part is fully expanded and stretched, the opening and closing mechanism can make the exhaust section and the inflatable part
  • the inner cavity of the telescopic element is communicated and makes the inflatable telescopic element deflated and contracted.
  • a receiving platform is provided at the bottom of the inflatable telescopic member, and a communication hole is provided in the receiving platform, and the self-pressure relief member can slide vertically in the communication hole, and the self-pressure relief member
  • a sealing section is also provided, the sealing section is located above the exhaust section, the side wall of the sealing section can be closely attached to the hole wall of the communication hole and can seal the communication hole.
  • the exhaust section can communicate with the inner cavity of the inflatable expansion member through the communication hole.
  • the exhaust section is provided with a venting groove, and the venting groove is provided with a connecting end and an air outlet, the connecting end is located at the upper end of the venting groove, and the gas outlet is located at the end of the venting groove
  • the lower end, the communication end and the gas outlet end communicate with each other through the groove body of the air release groove, when the communication end passes through the communication hole upwards, the inner cavity of the inflatable telescopic member can pass through the communication hole Perform a deflated contraction.
  • the exhaust section is provided with a leaking column, the surface of which is continuous and complete, the leaking column is connected below the sealing section, and the cross-sectional area of the leaking column is smaller than that of the communication hole.
  • Cross-sectional area when the deflation column passes through the communication hole upwards, the inner chamber of the inflatable telescopic member can deflate and contract through the gap between the communication hole and the deflation column.
  • the upper end of the self-pressure relief member is provided with a sealing protrusion, the sealing protrusion protrudes from the side wall of the sealing section, and the sealing protrusion can be in close contact with the communication hole.
  • the opening is used to seal the communication hole, and the lower end of the self-pressure-relieving member is provided with a limiting protrusion, and the limiting protrusion protrudes from the side wall of the self-pressure-relieving member.
  • the opening and closing mechanism includes a gear table, the gear table is fixed at the lower part of the housing and arranged below the self-pressure relief member, and the gear table can be connected with the limit The bottom of the position bump abuts against and prevents the downward movement of the self-pressure relief member, and after the inflatable expansion member is fully expanded and stretched, the self-pressure relief member can move upward relative to the movable end of the inflatable expansion member And make the exhaust section pass through the communicating hole upwards.
  • the length of the exhaust section and the length of the sealing section are both greater than the vertical thickness of the receiving platform.
  • the opening and closing mechanism also includes a reset platform, the reset platform is fixed on the air intake cover, the reset platform is located above the self-pressure relief member and can be positioned on the inflatable telescopic member When contracting and moving up, it abuts against the top of the sealing bump, and the reset platform can make the self-pressure-releasing part move down relative to the movable end of the inflatable telescopic part and make the communication hole and the sealing segment snugly to restore the seal.
  • the direct-acting pressure relief pneumatic device further includes a return spring, the return spring is arranged between the top of the follower and the bottom of the housing, and the return spring can make the follower
  • the moving part has a tendency to move toward the reset platform.
  • the follower includes a connection cover and a top tube, the connection cover is fixed under the receiving platform, the top tube is fixed under the connection cover, and the inner cavity of the top tube communicate with the outside atmosphere.
  • the housing includes a guide hole, the guide hole is provided at the bottom of the housing, and the top cylinder can be inserted into the guide hole to move up and down.
  • the present invention also provides an air-operated drain valve, including the above-mentioned pneumatic device for pressure relief of the needle valve.
  • the present invention also provides a water tank, comprising the above-mentioned pneumatic device for pressure relief of the needle valve.
  • the pneumatic device for needle valve pressure relief of the present invention is provided with an air intake cover, an inflatable telescopic piece, a follower, a self-pressure relief piece and an opening and closing mechanism, wherein an external air pump is connected with the air intake cover, and can fill the air into the air intake cover.
  • the opening and closing mechanism can isolate the exhaust section and the inner cavity of the inflatable telescopic part from each other, so during the inflation process, the inflatable telescopic part can be quickly and without loss.
  • the expansion elongates and drives the follower to open the external drain valve for draining.
  • the inflatable telescopic member After the drainage is completed, the inflatable telescopic member is stretched in place, and the touch piece in the self-relieving mechanism will open the vent hole, so that the inflatable telescopic member will be deflated, and the opening and closing mechanism can make the
  • the exhaust section communicates with the inner cavity of the inflatable telescopic part and deflates the inflatable telescopic part, so that the drain valve can gradually reset and close the drainage, so the self-relieving part and the opening and closing mechanism can realize Automatic pressure relief, and saves additional components such as solenoid valves, has the advantages of high pressure relief and low cost.
  • the present invention uses the movable self-pressure relief part and a simple opening and closing mechanism, and utilizes the elongation and shortening characteristics of the inflatable telescopic part itself to realize the self-pressure relief function of the inflatable
  • the ratio of the length of the exhaust section to the vertical thickness of the receiving platform can realize the effect of precise control and delayed water shut-off when the solenoid valve releases pressure, and the present invention saves complicated components, pipelines and circuit systems Under the premise of the system, it can also achieve the beneficial effect of a complex system, so it has the advantages of very simple structure, reliable operation, and compact structure.
  • Fig. 1 is a disassembled structure diagram of the first embodiment of the pneumatic device for pressure relief of the needle valve of the present invention
  • Fig. 2 is a schematic structural view of the self-pressure relief member in the first embodiment of the present invention
  • Fig. 3 is a schematic cross-sectional structure diagram of the first embodiment of the pneumatic device for needle valve pressure relief of the present invention
  • Fig. 4 is a partial diagram of A in Fig. 3;
  • Fig. 5 is a schematic diagram of the first state of the first embodiment of the pneumatic device for needle valve pressure relief of the present invention
  • Fig. 6 is a schematic diagram of the second state of the first embodiment of the pneumatic device for pressure relief of the needle valve of the present invention.
  • Fig. 7 is a schematic diagram of the third state of the first embodiment of the pneumatic device for pressure relief of the needle valve of the present invention.
  • Fig. 8 is a schematic diagram of the fourth state of the first embodiment of the pneumatic device for pressure relief of the needle valve of the present invention.
  • Fig. 9 is a schematic structural view of the second embodiment of the pneumatic device for pressure relief of the needle valve of the present invention.
  • Fig. 10 is a schematic structural view of the self-pressure relief member in the second embodiment of the present invention.
  • Fig. 11 is a structural schematic diagram of the third embodiment of the pneumatic device for pressure relief of the needle valve of the present invention.
  • Fig. 12 is a schematic structural view of the inflatable telescopic member of the present invention.
  • the first embodiment of the present invention discloses a needle valve pressure relief pneumatic device, including a housing 1, an air intake cover 2, an inflatable telescopic member 3, a driven member 4 and a self-relieving member 6, the
  • the air intake cover 2 is fixed on the upper part of the housing 1 and is in sealing communication with the inflatable telescopic member 3.
  • the air intake cover 2 is communicated with the external air pump, and the air intake cover 2 can be pumped by the external air pump.
  • the inflatable telescopic part 3 is inflated, and the inflatable telescopic part 3 can expand and stretch in the housing 1 after being inflated, and the driven part 4 is connected to the movable end of the inflatable telescopic part 3, and the driven part 4
  • the part 4 will move along with the movable end of the inflatable telescopic part 3 , and the driven part 4 can reach the bottom of the casing 1 after the inflatable telescopic part 3 is fully inflated.
  • the follower 4 can push the external drain valve to gradually open to perform a drainage operation.
  • the inflatable telescopic member 3 is an object that can produce elastic deformation after being filled with gas, such as a telescopic folding air bag, a telescopic balloon, a telescopic air film, etc.
  • the airbag has a relatively stable elongated motion path and is suitable for use in a stable motion system.
  • the pneumatic device for pressure relief of the needle valve also includes an opening and closing mechanism 5, the self-relieving member 6 is connected to the movable end of the inflatable telescopic member 3, and the self-relieving member 6 will When the inflatable telescopic part 3 is inflated and stretched or deflated and shortened, it moves along with the movable end of the inflatable telescopic part 3, wherein the self-relieving part 6 is provided with an exhaust section 61, and the inflatable telescopic part 3 When inflated and stretched, the opening and closing mechanism 5 can isolate the exhaust section 61 and the inner cavity of the inflatable telescopic part 3 from each other, so that the inflatable telescopic part 3 can expand and stretch without loss, After the inflatable telescopic part 3 is fully expanded and stretched, the inflatable telescopic part 3 will drive the self-pressure relief part 6 to touch the opening and closing structure, and the opening and closing mechanism 5 can make the exhaust section 61 communicates with the inner cavity of the inflatable telescopic
  • the follower 4 will follow the movable end assembly of the inflatable telescopic part 3 to move upwards.
  • the switch of the external drain valve will gradually light up and finally close, thereby realizing the described
  • the inflatable telescopic part 3 automatically releases the pressure and performs the function of shutting off the water.
  • the pneumatic device for needle valve pressure relief in the embodiment of the present invention is provided with an air inlet cover 2, an inflatable telescopic member 3, a driven member 4, a self-pressure relief member 6 and an opening and closing mechanism 5, and the air inlet cover 2 is connected to an external air pump, Gas can be filled into the inflatable telescopic member 3 by an external air pump, and due to the increase of internal air pressure, the inflatable telescopic member 3 will expand and elongate under the force of the air pressure.
  • the closing mechanism 5 will control the exhaust section 61 in the self-pressure relief part 6 to be isolated from the inner chamber of the inflatable telescopic part 3, so that the gas in the inner cavity of the inflatable telescopic part 3 will not leak, so that all The inflatable telescopic piece 3 can expand and elongate normally without loss.
  • the force of the gas on the bottom of the inflatable telescopic piece 3 is greater than the switching resistance of the external drain valve, so that the inflatable telescopic piece 3 can Drive the follower 4 to open the external drain valve to complete the trigger operation of the drain valve.
  • the self-pressure relief member 6 will touch the opening and closing mechanism 5, and the opening and closing mechanism 5 will push the self-pressure releasing member 6 to make the inflatable
  • the inner cavity of the telescopic part 3 communicates with the exhaust section 61, and the inflatable telescopic part 3 is deflated. Due to the decrease of the internal air pressure, the force of the air pressure on the bottom of the inflatable telescopic part 3 gradually decreases and is smaller than that of the external drain valve.
  • the switch restoration force may be smaller than the elastic contraction force of the inflatable expansion member 3 itself, so that the drain valve can gradually reset and close the drain. Therefore, by using the self-pressure relief member 6 and the opening and closing mechanism 5, the automatic pressure relief of the inflatable telescopic member 3 can be realized, saving additional components such as solenoid valves, and has the advantages of high pressure relief and low cost.
  • the bottom of the inflatable telescopic member 3 is provided with a receiving platform 31 , and inside the receiving platform 31 A communication hole 311 is provided, and the self-pressure relief member 6 can slide vertically in the communication hole 311.
  • the self-pressure relief member 6 is also provided with a sealing section 64, and the sealing section 64 is located in the exhaust section. 61 , in order to achieve better sealing, the sealing section 64 and the communication hole 311 are interference fit.
  • the self-pressure relief member 6 in this embodiment, proper damping is provided between the self-pressure relief member 6 and the communication hole 311, so that the friction force between the self-pressure relief member 6 and the communication hole 311 is greater than that of the self-discharge member 6 and the communication hole 311.
  • the self-weight of the pressure member 6, in other embodiments, the self-pressure-releasing member 6 can also be set to have a larger self-weight, so as to facilitate reset.
  • the side wall of the sealing section 64 can be close to the hole wall of the communication hole 311 and can seal the communication hole 311, thereby ensuring that the inflatable telescopic The airtight state of the inner cavity of part 3 avoids the energy loss of the air pump.
  • the exhaust section 61 When deflated and contracted, the exhaust section 61 can communicate with the inner cavity of the inflatable telescopic member 3 through the communication hole 311 , so as to realize exhaust and pressure relief.
  • the exhaust section 61 is specifically provided with an air release groove 611, and the air release groove 611 is provided with a communication end 6111 and an air outlet end 6112, and the communication end 6111 is located on the air release
  • the upper end of the groove 611, the gas outlet end 6112 is located at the lower end of the gas release groove 611, the connecting end 6111 and the gas outlet end 6112 communicate with each other through the groove body of the gas leakage groove 611, when the connecting end 6111 passes upwards
  • the inner chamber of the inflatable telescopic member 3 can deflate and shrink through the communication hole 311.
  • the communication end 6111 When performing self-relieving pressure, the communication end 6111 will preferentially pass through the communication hole 311 and The inner chamber of the inflatable telescopic member 3 communicates, and then the gas in the inner chamber of the inflatable telescopic member 3 passes from the communication end 6111 to the gas outlet end 6112, and is discharged from the gas outlet end 6112 to the outside atmosphere, thereby forming Pressure relief effect.
  • the present invention also discloses a second embodiment, which is different from the first embodiment in that the exhaust section 61 is specifically provided with a vent column 612, and the surface of the vent post 612 is continuous and complete without grooves , the leaking column 612 is connected below the sealing section 64, the cross-sectional area of the leaking column 612 is smaller than the cross-sectional area of the communicating hole 311, so when the leaking column 612 is located on the communicating hole 311 , the matching mode between the leaking column 612 and the communication hole 311 will change from an interference fit to a clearance fit, and the wall of the leaking column 612 will form an exhaust gap with the inner wall of the communication hole 311, so that the inflation The air in the inner cavity of the telescopic member 3 is discharged from the exhaust gap, so when the deflation column 612 passes through the communication hole 311 upward, the inner cavity of the inflatable expansion member 3 can be deflated through the communication hole 311 shrink.
  • the scheme of combining the first embodiment and the second embodiment can also be adopted, that is, while using the decompression column 612 to perform pressure relief, by adding the degassing groove on the degassing column 612 611 to expand the exhaust gap, thereby further improving the efficiency of deflation.
  • the upper end of the self-pressure relief member 6 is provided with a sealing protrusion 62, and the sealing protrusion 62 protrudes from the side wall of the sealing section 64, and the sealing protrusion 62 can be used to seal the communicating hole 311. Perform upper sealing, cooperate with the side sealing effect of the sealing section 64 to further strengthen the sealing effect, and also limit the range in which the self-pressure relief member 6 moves downward relative to the inflatable telescopic member 3.
  • the lower end of the pressure relief member 6 is provided with a limit projection 63, the limit projection 63 protrudes from the side wall of the self-pressure relief member 6, and the limit projection 63 is used to control the self-pressure relief member. 6 to limit the upward movement range of the inflatable telescopic member 3 .
  • the opening and closing mechanism 5 includes a gear table 51, which is fixed on the lower part of the housing 1 and arranged below the self-pressure relief member 6.
  • a gear table 51 which is fixed on the lower part of the housing 1 and arranged below the self-pressure relief member 6.
  • the inflatable telescopic member 3 continues to move downward, and under the reaction force of the gear table 51, the The self-pressure relief part 6 will move upwards relative to the inflatable telescopic part 3, and the deflated groove 611 or the deflated column 612 will also move upward relative to the inflatable telescopic part 3, and finally the deflated groove 611 or the deflated
  • the column 612 communicates with the inner chamber of the inflatable telescopic member 3, and the gas in the inner chamber of the inflatable telescopic member 3 can be discharged.
  • the self-pressure-releasing member 6 can be provided with a larger self-weight, so that when the inflatable telescopic member 3 deflates and contracts, the self-pressure-releasing member 6 can return to the receiving platform 31 by its own weight , to seal the communication hole 311, and in this embodiment, in order to make the upwardly moved self-pressure relief member 6 return to its original position, the opening and closing mechanism 5 also includes a reset table 52, so The reset table 52 is fixed on the air intake cover 2, and the reset table 52 is located above the self-pressure relief member 6.
  • the inflatable telescopic member 3 When the inflatable telescopic member 3 is deflated, the inflatable telescopic member 3 will shrink and Drive the self-pressure relief part 6 to move upwards, when it moves to a certain position, the self-pressure relief part 6 can abut against the top of the sealing protrusion 62, at this time, the inflatable telescopic part 3 continues to shrink, and Under the reaction force of the reset table 52, the self-pressure relief member 6 will move downward relative to the movable end of the inflatable telescopic member 3.
  • the side wall of the sealing section 64 will first First fit the hole wall of the communication hole 311 to restore the sealing of the communication hole 311, and then the sealing protrusion 62 abuts against the receiving platform 31 to further strengthen the sealing, and the communication hole 311 returns to the sealed state, thereby Complete reset.
  • the length of the exhaust section 61 is greater than the vertical thickness of the receiving platform 31, so that when the self-pressure relief member 6 moves upward relative to the inflatable telescopic member 3, the communication end 6111 or the air release column
  • the upper end of 612 can enter the inner cavity of the inflatable telescopic member 3, and because the length of the exhaust section 61, that is, the length of the groove body of the air release groove 611 or the length of the air release column 612 is greater than that of the receiving platform 31
  • the vertical thickness of the gas outlet end 6112 or the lower end of the gas release column 612 can be kept below the receiving platform 31, so that the gas in the inner cavity of the inflatable telescopic member 3 can pass through the gas release groove 611 or the gas release groove 611
  • the gap between the air release column 612 and the communication hole 311 passes through the receiving platform 31 and is discharged from the air outlet end 6112 .
  • the length of the sealing section 64 is greater than the vertical thickness of the receiving platform 31, so that when the side wall of the sealing section 64 abuts against the hole wall of the communication hole 311, the communication end 6111 or the air leakage column
  • the lower end of 612 can be located below the receiving platform 31, so that the communication hole 311 will not communicate with the communication end 6111 or create an exhaust gap with the deflated column 612, which can further ensure that the inflatable telescopic member 3 Gas leakage does not occur during expansion and elongation.
  • the present invention can also achieve the effect of delaying water shut-off and precise control that can be achieved when a common electromagnetic valve releases the pressure of the inflatable telescopic member 3 .
  • a common electromagnetic valve releases the pressure of the inflatable telescopic member 3 .
  • the sealing section 64 By reasonably setting the length of the sealing section 64, a relatively fixed time-delayed water shut-off and precise control effects can be achieved.
  • the sealing section 64 When the external drain valve is opened, the sealing section 64 is still in a sealed state with the communication hole 311, and the sealing protrusion 62 is still on the receiving platform 31, and the inflatable expansion member 3 continues to expand and elongate. During the process, the external drain valve will gradually open, and reach the maximum opening when the limit projection 63 touches the gear table 51.
  • the sealing section 64 has been in contact with the The communication hole 311 remains in a sealed state, and then the self-pressure relief member 6 moves upward relative to the receiving platform 31 .
  • the communication hole 311 will not immediately communicate with the inner cavity of the inflatable telescopic member 3, and the external drainage
  • the valve will always maintain the state of the maximum valve degree, and only when the upper end of the communication end 6111 or the air release column 612 moves above the receiving platform 31, the upper end of the communication end 6111 or the air release column 612 will It communicates with the inner cavity of the inflatable telescopic part 3, so that the inflatable telescopic part 3 deflates and shrinks, and the external drain valve begins to gradually close until it is completely closed.
  • the electromagnetic valve and related pipelines can be replaced with a very simple structure to realize the pressure relief function, and the effect of delayed water shut-off and precise control of the electromagnetic valve can also be achieved.
  • the follower 4 includes a connection cover 41 and a top cylinder 42, the connection cover 41 is fixed under the receiving platform 31, so the follower 4 can follow the inflatable telescopic member 3 to move.
  • the top tube 42 is fixed under the connecting cover 41 , and the inner chamber of the top tube 42 communicates with the outside atmosphere.
  • the inflatable telescopic part 3 When the inflatable telescopic part 3 is inflated and stretched, the inflatable telescopic part 3 will push the top tube 42 to move downward, and the bottom of the top tube 42 will touch the switch of the external drain valve, so that the drain valve Open.
  • the gas in the inner cavity of the inflatable telescopic member 3 will enter the inner cavity of the top cylinder 42 from the exhaust section 61, and be discharged from the inner cavity of the top cylinder 42 to the outside in the atmosphere.
  • the housing 1 further includes a guide hole 11, the guide hole 11 is provided at the bottom of the housing 1, and the top tube 42 can be inserted into the guide hole 11 Moving up and down ensures that the inflatable telescopic member 3 and the follower 4 can be aligned with the switch of the external drain valve, and also ensures that the active surface can be correctly stressed to achieve normal folding and recovery.
  • the top of the sealing bump 62 abuts against the reset platform 52 , and the side wall of the sealing section 64 abuts against the hole wall of the communication hole 311 to form a seal.
  • the lower surface of the protrusion 62 abuts against the receiving platform 31 to further seal the communication hole 311, and at the same time, the exhaust section 61 is located below the receiving platform 31, and the exhaust section 61 is connected to the receiving platform 31.
  • the inner cavities of the inflatable telescopic parts 3 are isolated from each other.
  • the external air pump starts to inflate the inner cavity of the inflatable telescopic member 3 through the air intake cover 2, and the air pressure force is greater than the reset force of the external drain valve and/or the inflatable telescopic member 3, the inflatable telescopic member 3 begins to expand and elongate and drives the follower 4 to move downward. After stretching to a certain length, the follower 4 touches the switch of the external drain valve And overcome the switch resistance to open the drain valve, so as to achieve drainage. Referring to Fig.
  • the inflatable telescopic member 3 continues to expand and elongate, and the bottom of the limit protrusion 63 of the self-pressure relief member 6 located at the movable end of the inflatable telescopic member 3 will abut against the gear platform 51, which will be described later
  • the inflatable telescopic part 3 continues to extend and pushes the self-pressure relief part 6 to continue moving down, but due to the gear effect of the gear platform 51, the self-pressure relief part 6 will be stationary relative to the gear platform 51, but As the movable end of the inflatable telescopic member 3 continues downward, the receiving platform 31 will gradually move down.
  • the period during which the receiving platform 31 is located above the connecting end 6111 or above the upper end of the vent column 612 belongs to the delay time from valve opening to valve closing.
  • the inner chamber of the inflatable telescopic member 3 will communicate with the vent groove 611 or the deflated column 612 through the exhaust section 61 through the communication hole 311, and the inflatable The air in the telescopic member 3 will be discharged to the outside atmosphere through the exhaust section 61, so as to realize self-relieving pressure without the action of other driving parts such as solenoid valves, the structure is simple, and the precise control of delayed valve closing can be realized , the operation is more reliable.
  • the reset force of the external drain valve and/or the elastic recovery force of the inflatable telescopic member 3 is gradually greater than the air pressure force.
  • the inflatable telescopic part 3 will shrink and drive the follower 4 and the self-pressure relief part 6 to move upwards.
  • the drain valve switch will gradually close to realize automatic water stop, and then move upward to a certain height.
  • the side wall of the sealing section 64 abuts against the hole wall of the communication hole 311 to form a seal first, and the top of the sealing protrusion 62 will also abut against the reset table 52, and due to the inflation and expansion The component 3 will continue to shrink and move up, and the receiving platform 31 will gradually approach the sealing protrusion 62 and finally abut against the sealing protrusion 62, thereby realizing reset.
  • the present invention also discloses a third embodiment.
  • the third embodiment is to add a reset structure on the basis of the first embodiment or the second embodiment.
  • the pneumatic device for needle valve pressure relief also includes Return spring 7, the return spring 7 is arranged between the top of the follower 4 and the bottom of the housing 1, the return spring 7 can make the follower 4 move toward the reset platform 52 the trend of.
  • the return spring 7 can cooperate with the restoring force of the external drain valve switch to reset the inflatable telescopic part 3 and the self-pressure-releasing part 6, which has a faster recovery speed, higher efficiency.
  • the present invention uses the movable self-pressure relief part 6 and the simple opening and closing mechanism 5, and utilizes the elongation and shortening characteristics of the inflatable telescopic part 3 itself to realize the self-relieving function of the inflatable telescopic part 3 , and by setting the ratio of the length of the sealing section 64 to the vertical thickness of the receiving platform 31, it is possible to realize the effect of precise control and time-delayed water shut-off when the solenoid valve releases pressure, and the present invention saves complicated parts Under the premise of , pipeline and circuit system, it can also achieve the beneficial effect of complex system, so it has the advantages of very simple structure, reliable operation and compact structure.
  • the embodiment of the present invention also discloses an air-controlled exhaust valve and a water tank (not shown in the figure), both of which include the above-mentioned pneumatic device for needle valve pressure relief, so
  • the pneumatic device for pressure relief of the needle valve is provided with an inflatable telescopic part 3, a driven part 4, a self-relieving part 6 and an opening and closing mechanism 5, and by inflating the inflatable telescopic part 3, the driven part 4 can be driven Open the switch of the drain valve in the air-controlled water tank to realize drainage, and then use the gear platform 51 in the opening and closing mechanism 5 to follow the position of the inflatable telescopic member 3 in the self-pressure relief member 6 During the movement of the movable end, the self-pressure relief part 6 is shifted, so that the self-pressure relief part 6 can be inserted into the inner cavity of the inflatable telescopic part 3, and the exhaust section 61 in the self-pressure relief part 6 It will communicate with the inner cavity of the inflatable expansion part 3, so as to automatically release the pressure of the inflatable expansion part 3.
  • the embodiment of the present invention can realize the self-relieving function of the inflatable telescopic member 3 by setting a simple self-relieving member 6 and an opening and closing mechanism 5, Therefore, it has the advantages of simple structure, reliable operation and cost saving.

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Abstract

一种针阀泄压的气动装置、一种气控排水阀及一种水箱，针阀泄压的气动装置包括壳体（1）、进气盖（2）、充气伸缩件（3）、从动件（4）和自泄压件（6），进气盖（2）与充气伸缩件（3）密封连通，进气盖（2）能够往充气伸缩件（3）内充气，从动件（4）连接于充气伸缩件（3）的活动端，从动件（4）能够到达壳体（1）底部，针阀泄压的气动装置还包括开闭机构（5），开闭机构（5）能够使泄气槽（611）与充气伸缩件（3）的内腔连通并使充气伸缩件（3）泄气收缩。气控排水阀包括如上所述的针阀泄压的气动装置。水箱包括如上所述的针阀泄压的气动装置。采用针阀泄压的气动装置，能够在充气完毕后自动进行泄压，运作可靠而且结构非常精简，能够节省电气件，成本较低。

Description

一种针阀泄压的气动装置、一种气控排水阀及一种水箱 技术领域
本发明涉及气动装置技术领域，尤其涉及一种针阀泄压的气动装置、一种气控排水阀及一种水箱。
背景技术
传统坐便器中大多使用机械式的排水阀对水箱进行排水，在需要排水时，通常使用手动按压的方式来驱动排水阀进行打开，从而实现排水。随着人们对生活质量要求的提高，非接触式的排水阀逐渐应用到智能坐便器中。由于缺少手动按压的机械驱动，非接触式的排水阀需要一个额外的气动装置对排水阀的启动进行触发。
目前市场上常使用的气动装置由气泵、气囊和泄压阀组成，在需要排水时，启动气泵使气囊充气，气囊充气后膨胀伸长从而驱动从动杆对排水阀进行触发，但由于市场现有的气动装置都是不带泄压功能的，气泵通过气囊触发排水阀打开进行排水之后，整个气路充满压力气体，如果不对气囊进行泄气泄压，则气囊会无法缩小，导致从动杆一直顶在排水阀的打开开关处，使排水无法停止。为了实现气动装置的泄压功能，现有气动装置通常需要配置专用的泄压模块，增设电磁阀，通过气路转换对气囊进行排气以实现泄压，但这种方案需要额外增加电磁阀和管路、电路等部件，成本较高，而且结构复杂，占用空间大，内部走线杂乱，装配和维护都非常麻烦。
发明内容
本发明所要解决的技术问题在于，提供一种针阀泄压的气动装置，能够在充气完毕后自动进行泄压，运作可靠而且结构非常精简，能够节省电器件，成本较低。
为了解决上述技术问题，本发明提供了一种针阀泄压的气动装置，包括壳 体、进气盖、充气伸缩件、从动件和自泄压件，所述进气盖固定于所述壳体上部并与所述充气伸缩件密封连通，所述进气盖能够往所述充气伸缩件内充气，所述充气伸缩件在充气后能够在所述壳体内膨胀伸长，所述从动件连接于所述充气伸缩件的活动端，所述从动件能够到达所述壳体底部。
所述针阀泄压的气动装置还包括开闭机构，所述自泄压件连接于所述充气伸缩件的活动端，所述自泄压件设有排气段，在充气时，所述开闭机构能够使所述排气段和所述充气伸缩件的内腔相互隔离；在所述充气伸缩件完全膨胀伸长后，所述开闭机构能够使所述排气段与所述充气伸缩件的内腔连通并使所述充气伸缩件泄气收缩。
作为上述方案的改进，所述充气伸缩件底部设有承接平台，所述承接平台内设有连通孔，所述自泄压件能够在所述连通孔中竖直滑动，所述自泄压件还设有密封段，所述密封段位于所述排气段上方，所述密封段的侧壁能够紧贴在所述连通孔的孔壁上并能对所述连通孔进行密封。
所述排气段能够通过所述连通孔与所述充气伸缩件的内腔连通。
作为上述方案的改进，所述排气段设有泄气槽，所述泄气槽设有连通端和出气端，所述连通端位于所述泄气槽的上端，所述出气端位于所述泄气槽的下端，所述连通端与所述出气端通过所述泄气槽的槽体相互连通，当所述连通端向上穿过所述连通孔时，所述充气伸缩件的内腔能够通过所述连通孔进行泄气收缩。
作为上述方案的改进，所述排气段设有泄气柱，所述泄气柱表面连贯完整，所述泄气柱连接于所述密封段下方，所述泄气柱的横截面积小于所述连通孔的横截面积，当所述泄气柱向上穿过所述连通孔时，所述充气伸缩件的内腔能够通过所述连通孔与所述泄气柱之间的间隙进行泄气收缩。
作为上述方案的改进，所述自泄压件的上端设有密封凸块，所述密封凸块凸出于所述密封段的侧壁，所述密封凸块能够紧贴于所述连通孔的开口上并对所述连通孔进行密封，所述自泄压件的下端设有限位凸块，所述限位凸块凸出于所述自泄压件的侧壁。
作为上述方案的改进，所述开闭机构包括挡位台，所述挡位台固定于所述壳体下部并设于所述自泄压件的下方，所述挡位台能与所述限位凸块的底部相抵接并阻止所述自泄压件向下运动，在所述充气伸缩件完全膨胀伸长后，所述 自泄压件能够相对于所述充气伸缩件的活动端向上运动并使所述排气段向上穿过所述连通孔。
作为上述方案的改进，所述排气段的长度和所述密封段的长度均大于所述承接平台的竖直厚度。
作为上述方案的改进，所述开闭机构还包括复位台，所述复位台固定于所述进气盖上，所述复位台位于所述自泄压件的上方并能在所述充气伸缩件收缩上移时与所述密封凸块的顶部相抵接，所述复位台能够使所述自泄压件相对于所述充气伸缩件的活动端向下移动并使所述连通孔与所述密封段紧贴以恢复密封状态。
作为上述方案的改进，所述直动泄压的气动装置还包括复位弹簧，所述复位弹簧设于所述从动件顶部与所述壳体底部之间，所述复位弹簧能够使所述从动件具有向着所述复位台方向移动的趋势。
作为上述方案的改进，所述从动件包括连接盖和顶筒，所述连接盖固定于所述承接平台下方，所述顶筒固定于所述连接盖的下方，所述顶筒的内腔与外部大气连通。
作为上述方案的改进，所述壳体包括导向孔，所述导向孔设于所述壳体底部，所述顶筒能够插入所述导向孔中进行上下移动。
本发明还提供了一种气控排水阀，包括如上所述的针阀泄压的气动装置。
本发明还提供了一种水箱，包括如上所述的针阀泄压的气动装置。
实施本发明，具有如下有益效果：
本发明针阀泄压的气动装置设有进气盖、充气伸缩件、从动件、自泄压件和开闭机构，其中外部气泵与所述进气盖连接，能够将气体充入所述充气伸缩件中，在充气时，所述开闭机构能够使所述排气段和所述充气伸缩件的内腔相互隔离，因此在充气过程中，所述充气伸缩件能够无损耗、快速地膨胀伸长，并驱动所述从动件对外部排水阀打开进行排水。在排水完毕后，所述充气伸缩件伸长到位，所述自泄压机构中的触动件会对所述泄气孔进行打开，使所述充气伸缩件发生泄气，所述开闭机构能够使所述排气段与所述充气伸缩件的内腔连通并使所述充气伸缩件泄气收缩，从而使排水阀能够逐渐复位并关闭排水，因而利用所述自泄压件和开闭机构，能够实现自动泄压，而且节省了额外的电磁阀等部件，具有泄压高效，成本低的优点。
本发明使用可活动的所述自泄压件和简单的开闭机构，利用所述充气伸缩件本身的伸长和缩短特性，就能够实现所述充气伸缩件的自泄压功能，而且通过设置所述排气段的长度和所述承接平台的竖直厚度的比例，就能够实现电磁阀泄压时精确控制和延时关水的效果，本发明在节省了复杂的部件、管道和电路系统的前提下，还能达到复杂系统的有益效果，因此具有结构非常简单、运行可靠、结构精简的优点。
附图说明
图1是本发明针阀泄压的气动装置第一实施例的拆分结构示意图；
图2是本发明第一实施例中自泄压件的结构示意图；
图3是本发明针阀泄压的气动装置第一实施例的剖面结构示意图；
图4是图3中A的局部图；
图5是本发明针阀泄压的气动装置第一实施例第一状态的示意图；
图6是本发明针阀泄压的气动装置第一实施例第二状态的示意图；
图7是本发明针阀泄压的气动装置第一实施例第三状态的示意图；
图8是本发明针阀泄压的气动装置第一实施例第四状态的示意图；
图9是本发明针阀泄压的气动装置第二实施例的结构示意图；
图10是本发明第二实施例中自泄压件的结构示意图；
图11是本发明针阀泄压的气动装置第三实施例的结构示意图；
图12是本发明充气伸缩件的结构示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述。仅此声明，本发明在文中出现或即将出现的上、下、左、右、前、后、内、外等方位用词，仅以本发明的附图为基准，其并不是对本发明的具体限定。
参见图1，本发明第一实施例公开了一种针阀泄压的气动装置，包括壳体1、进气盖2、充气伸缩件3、从动件4和自泄压件6，所述进气盖2固定于所述壳体1上部并与所述充气伸缩件3密封连通，所述进气盖2与外部的气泵连通，通过外部气泵打气，所述进气盖2能够往所述充气伸缩件3内充气，所述充气 伸缩件3在充气后能够在所述壳体1内膨胀伸长，所述从动件4连接于所述充气伸缩件3的活动端，所述从动件4会跟随所述充气伸缩件3的活动端进行移动，在所述充气伸缩件3完全膨胀后，所述从动件4能够到达所述壳体1底部。在所述从动件4到达所述壳体1底部的过程中，所述从动件4能够推动外部的排水阀逐渐打开并进行排水操作。所述充气伸缩件3为充入气体后能够产生弹性形变的物体如伸缩折叠气囊、伸缩气球、伸缩气膜等，在本实施例中，所述充气伸缩件3优选为伸缩折叠气囊，伸缩折叠气囊具有较稳定的伸长运动路径，适合在稳定的运动系统中使用。
参见图2和图3，所述针阀泄压的气动装置还包括开闭机构5，所述自泄压件6连接于所述充气伸缩件3的活动端，所述自泄压件6会在所述充气伸缩件3充气膨胀伸长或泄气缩短时跟随所述充气伸缩件3的活动端进行运动，其中所述自泄压件6设有排气段61，在所述充气伸缩件3充气膨胀伸长时，所述开闭机构5能够使所述排气段61和所述充气伸缩件3的内腔相互隔离，从而使所述充气伸缩件3能够无损耗地进行膨胀伸长，在所述充气伸缩件3完全膨胀伸长后，所述充气伸缩件3会驱动所述自泄压件6触碰到所述开闭结构，所述开闭机构5能够使所述排气段61与所述充气伸缩件3的内腔连通并使所述充气伸缩件3泄气收缩。所述充气伸缩件3泄气收缩后，所述从动件4会跟随所述充气伸缩件3的活动端组件向上运动，此时外部排水阀的开关会逐渐光效并最终关闭，从而实现所述充气伸缩件3自动泄压并进行关水的功能。
本发明第一实施例的有益效果如下：
本发明实施例针阀泄压的气动装置设有进气盖2、充气伸缩件3、从动件4、自泄压件6和开闭机构5，所述进气盖2与外部气泵连接，通过外部气泵能将气体充入所述充气伸缩件3中，由于内部气压增大，在气压作用力的推动下，所述充气伸缩件3会膨胀并伸长，在此过程中，所述开闭机构5会控制所述自泄压件6中的排气段61与所述充气伸缩件3的内腔相互隔离，使所述充气伸缩件3内腔的气体不会发生泄漏，从而使所述充气伸缩件3能够正常无损耗地进行膨胀伸长，在伸长过程中，气体对所述充气伸缩件3底部的作用力大于外部排水阀的开关阻力，从而使所述充气伸缩件3能够驱动所述从动件4对外部排水阀进行打开，完成排水阀的触发操作。在所述充气伸缩件3完全膨胀伸长后，所述自泄压件6会触碰到所述开闭机构5，所述开闭机构5推动所述自泄压件6， 使所述充气伸缩件3的内腔与所述排气段61连通，所述充气伸缩件3发生泄气，由于内部气压降低，气压对所述充气伸缩件3底部的作用力逐渐减小并小于外部排水阀的开关回复力或者小于所述充气伸缩件3本身的弹性收缩力，从而使排水阀能够逐渐复位并关闭排水。因而利用所述自泄压件6和所述开闭机构5，能够实现所述充气伸缩件3的自动泄压，节省了额外的电磁阀等部件，具有泄压高效，成本低的优点。
具体地，参见图12，为了保证所述充气伸缩件3在膨胀伸长时不发生漏气、损耗气泵能量的情况，所述充气伸缩件3底部设有承接平台31，所述承接平台31内设有连通孔311，所述自泄压件6能够在所述连通孔311中竖直滑动，所述自泄压件6还设有密封段64，所述密封段64位于所述排气段61上方，为了能够实现较好的密封，所述密封段64和所述连通孔311为过盈配合。在本实施例中，所述自泄压件6与所述连通孔311之间设置合适的阻尼，使所述自泄压件6与所述连通孔311之间的摩擦力大于所述自泄压件6的自重，在其他实施例中，也可以设置所述自泄压件6具有较大的自重，以便于复位。在所述充气伸缩件3膨胀伸长时，所述密封段64的侧壁能够紧贴在所述连通孔311的孔壁上并能对所述连通孔311进行密封，从而保证所述充气伸缩件3内腔的密闭状态，避免气泵能量发生损耗。在泄气收缩时，所述排气段61能够通过所述连通孔311与所述充气伸缩件3的内腔连通，从而实现排气泄压。
参见图4，在本发明第一实施例中，所述排气段61具体设置有泄气槽611，所述泄气槽611设有连通端6111和出气端6112，所述连通端6111位于所述泄气槽611的上端，所述出气端6112位于所述泄气槽611的下端，所述连通端6111与所述出气端6112通过所述泄气槽611的槽体相互连通，当所述连通端6111向上穿过所述连通孔311时，所述充气伸缩件3的内腔能够通过所述连通孔311进行泄气收缩,在进行自泄压时，所述连通端6111会优先穿过所述连通孔311与所述充气伸缩件3的内腔连通，随后所述充气伸缩件3内腔的气体从所述连通端6111通至所述出气端6112，并从所述出气端6112排出至外部大气，从而形成泄压效果。
参见图9和图10，本发明还公开了第二实施例，与第一实施例不同的是，所述排气段61具体设置有泄气柱612，所述泄气柱612表面连贯完整没有凹槽，所述泄气柱612连接于所述密封段64下方，所述泄气柱612的横截面积小于所 述连通孔311的横截面积，因此当所述泄气柱612位于所述连通孔311上时，所述泄气柱612和所述连通孔311的配合方式会从过盈配合转化为间隙配合，所述泄气柱612壁面会与所述连通孔311内壁面形成排气间隙，从而使所述充气伸缩件3内腔的气从该排气间隙中排出，因此当所述泄气柱612向上穿过所述连通孔311时，所述充气伸缩件3的内腔能够通过所述连通孔311进行泄气收缩。在其他实施例中，也可以采用将第一实施例和第二实施例相结合的方案，即使用所述泄气柱612进行泄压的同时，通过在所述泄气柱612上增加所述泄气槽611来扩大排气间隙，从而进一步提高泄气的效率。
所述自泄压件6的上端设有密封凸块62，所述密封凸块62凸出于所述密封段64的侧壁，所述密封凸块62既能用于对所述连通孔311进行上部密封，配合所述密封段64的侧部密封作用能够进一步加强密封效果，而且还能对所述自泄压件6相对所述充气伸缩件3向下移动的范围进行限定，所述自泄压件6的下端设有限位凸块63，所述限位凸块63凸出于所述自泄压件6的侧壁，所述限位凸块63用于对所述自泄压件6对于所述充气伸缩件3向上移动的范围进行限定。所述开闭机构5包括挡位台51，所述挡位台51固定于所述壳体1下部并设于所述自泄压件6的下方，所述充气伸缩件3在膨胀伸长时驱动所述自泄压件6向下运动，所述自泄压件6能够相对于所述充气伸缩件3的活动端向上运动并使所述排气段61向上穿过所述连通孔。具体地，当所述挡位台51能与所述限位凸块63的底部相抵接时，所述充气伸缩件3继续向下运动，在所述挡位台51的反作用力下，所述自泄压件6会相对于所述充气伸缩件3向上移动，所述泄气槽611或所述泄气柱612也相对于所述充气伸缩件3向上移动，最终所述泄气槽611或所述泄气柱612与所述充气伸缩件3的内腔连通，所述充气伸缩件3内腔的气体得以排出。
在其他实施例中，所述自泄压件6可以设置较大的自重，这样当所述充气伸缩件3泄气收缩时，所述自泄压件6能够利用自重回到所述承接平台31，对所述连通孔311进行密封，而在本实施例中，为了使向上移动后的所述自泄压件6能够重新恢复到初始位置，所述开闭机构5还包括复位台52，所述复位台52固定于所述进气盖2上，所述复位台52位于所述自泄压件6的上方，当所述充气伸缩件3泄气后，所述充气伸缩件3会进行收缩并带动所述自泄压件6向上移动，当移动至一定位置时，所述自泄压件6能与所述密封凸块62的顶部相 抵接，此时所述充气伸缩件3继续收缩，而在所述复位台52的反作用力下，所述自泄压件6会相对于所述充气伸缩件3的活动端向下移动，在移动到极限位置后，所述密封段64的侧壁先与所述连通孔311的孔壁先贴合，使所述连通孔311恢复密封，随后所述密封凸块62与所述承接平台31相抵接进一步加强密封，所述连通孔311恢复密封的状态，从而完成复位。
所述排气段61的长度大于所述承接平台31的竖直厚度，这样当所述自泄压件6相对于所述充气伸缩件3向上移动时，所述连通端6111或所述泄气柱612的上端能够进入到所述充气伸缩件3的内腔中，而由于排气段61的长度，即所述泄气槽611的槽体长度或所述泄气柱612的长度大于所述承接平台31的竖直厚度，所述出气端6112或所述泄气柱612的下端能够保持在所述承接平台31的下方，从而使所述充气伸缩件3内腔的气体能够通过所述泄气槽611或所述泄气柱612与所述连通孔311之间的间隙穿过所述承接平台31并从所述出气端6112排出。
所述密封段64的长度大于所述承接平台31的竖直厚度，这样当所述密封段64的侧壁抵在所述连通孔311的孔壁时，所述连通端6111或所述泄气柱612的下端能够位于所述承接平台31的下方，这样所述连通孔311不会与所述连通端6111发生连通或者与所述泄气柱612产生排气间隙，能够进一步保证所述充气伸缩件3在膨胀伸长时不会发生气体泄漏。
另外，本发明还能达到普通电磁阀对所述充气伸缩件3进行泄压时所能实现的延时关水和精确控制的效果。通过对所述密封段64的长度的合理设置，可以达到较为固定的延时关水和精确控制效果。在外部排水阀打开时，所述密封段64还与所述连通孔311保持密封状态，所述密封凸块62还处在所述承接平台31上，在所述充气伸缩件3继续膨胀伸长的过程中，外部排水阀会逐渐开大，并在所述限位凸块63触碰到所述挡位台51时达到最大开度，在此过程中，所述密封段64一直与所述连通孔311保持密封状态，随后所述自泄压件6相对于所述承接平台31向上移动，但由于所述连通端6111或所述泄气柱612的上端到所述密封凸块62存在一定的竖直距离，所述连通孔311不会立刻与所述充气伸缩件3的内腔连通，在所述连通端6111或所述泄气柱612的上端移动至所述承接平台31上方前，外部排水阀会一直保持最大阀度的状态，只有当所述连通端6111或所述泄气柱612的上端移到所述承接平台31上方之后，所述连通端 6111或所述泄气柱612的上端才会与所述充气伸缩件3的内腔连通，从而使所述充气伸缩件3发生泄气收缩，外部排水阀开始逐渐关小直到完全关闭。通过合理设置所述连通端6111到所述密封凸块62之间的距离，即所述密封段64的长度，以及设置所述自泄压件6与所述连通孔311之间的摩擦力，就能达到普通电磁阀对所述充气伸缩件3进行泄压时的延时关水和精确控制的效果。因此通过上述设置，能够以非常简单的结构替代电磁阀及相关管路以实现泄压功能，而且还能达到电磁阀的延时关水和精确控制的效果。
为了能够驱动外部排水阀，所述从动件4包括连接盖41和顶筒42，所述连接盖41固定于所述承接平台31下方，因此所述从动件4能够跟随所述充气伸缩件3进行移动。所述顶筒42固定于所述连接盖41的下方，所述顶筒42的内腔与外部大气连通。当所述充气伸缩件3充气膨胀伸长时，所述充气伸缩件3会推动所述顶筒42向下运动，所述顶筒42的底部会触碰到外部排水阀的开关，使排水阀打开。在所述充气伸缩件3泄气时，所述充气伸缩件3内腔的气体会从所述排气段61进入所述顶筒42内腔，并从所述顶筒42的内腔排出至外部大气中。
为了限制所述从动件4的运动方向，所述壳体1还包括导向孔11，所述导向孔11设于所述壳体1底部，所述顶筒42能够插入所述导向孔11中进行上下移动，从而确保所述充气伸缩件3和所述从动件4能够对准外部排水阀的开关，也保证了所述活动面能够正确受力，实现正常的翻折凹陷和恢复。
本发明的工作原理及工作过程如下：
参见图5，在初始状态，所述密封凸块62的顶部抵在所述复位台52上，所述密封段64的侧壁与所述连通孔311的孔壁抵接形成密封，所述密封凸块62的下表面抵在所述承接平台31上进一步对所述连通孔311进行密封，同时，所述排气段61位于所述承接平台31的下方，所述排气段61与所述充气伸缩件3的内腔相互隔离。参见图6，在需要进行排水时，外部气泵开始通过所述进气盖2对所述充气伸缩件3的内腔进行充气，气压作用力大于外部排水阀的复位作用力和/或充气伸缩件3的弹性恢复力，所述充气伸缩件3开始膨胀伸长并带动所述从动件4向下移动，在伸长至一定长度后，所述从动件4触碰到外部排水阀的开关并克服开关阻力使排水阀打开，从而实现排水。参见图7，所述充气伸缩件3继续膨胀伸长，位于所述充气伸缩件3活动端的自泄压件6的限位凸块63 底部会抵在所述挡位台51上，此后所述充气伸缩件3继续伸长并推动所述自泄压件6继续下移，但由于挡位台51的挡位作用，所述自泄压件6会相对于所述挡位台51静止，但是由于所述充气伸缩件3的活动端继续向下，所述承接平台31会逐渐下移，此时外部排水阀还处于打开状态，从所述承接平台31离开所述密封凸块62到所述承接平台31位于所述连通端6111上方或所述泄气柱612上端的上方的这段时间，属于开阀到关阀的延时时间，一旦所述承接平台31下移到所述连通端6111的下方或所述泄气柱612上端的下方，所述充气伸缩件3的内腔会通过所述排气段61穿过所述连通孔311与所述泄气槽611或泄气柱612连通，所述充气伸缩件3内的空气会通过所述排气段61排出至外部大气中，从而在无需其他电磁阀等驱动件的作用下实现自泄压，结构精简，而且能够实现延时关阀的精确控制，运行比较可靠。
参见图8，在泄压之后，由于所述充气伸缩件3内部的气压作用力逐渐减弱，外部排水阀的复位作用力和/或充气伸缩件3的弹性恢复力逐渐大于气压作用力，所述充气伸缩件3会进行收缩并带动所述从动件4和所述自泄压件6向上移动，在上移的过程中，排水阀开关会逐渐关闭实现自动停水，在上移到一定高度后，所述密封段64的侧壁与所述连通孔311的孔壁抵接首先形成密封，所述密封凸块62的顶部也会抵在所述复位台52上，而由于所述充气伸缩件3会继续收缩上移，所述承接平台31会逐渐向所述密封凸块62靠近并最终抵在所述密封凸块62上，进而实现复位。
参见图11，本发明还公开了第三实施例，第三实施例是在第一实施例或第二实施例的基础上增加复位结构，具体地，所述针阀泄压的气动装置还包括复位弹簧7，所述复位弹簧7设于所述从动件4顶部与所述壳体1底部之间，所述复位弹簧7能够使所述从动件4具有向着所述复位台52方向移动的趋势。在所述充气伸缩件3泄气收缩时，所述复位弹簧7能够协同外部排水阀开关的恢复力对所述充气伸缩件3和所述自泄压件6进行复位，具有更快的恢复速度，效率更高。
本发明使用可活动的所述自泄压件6和简单的开闭机构5，利用所述充气伸缩件3本身的伸长和缩短特性，就能够实现所述充气伸缩件3的自泄压功能，而且通过设置所述密封段64的长度和所述承接平台31的竖直厚度的比例，就能够实现电磁阀泄压时精确控制和延时关水的效果，本发明在节省了复杂的部 件、管道和电路系统的前提下，还能达到复杂系统的有益效果，因此具有结构非常简单、运行可靠、结构精简的优点。
本发明实施例还公开了一种气控排气阀和一种水箱(图中未示出)，所述气控排气阀和水箱均包括如上所述的针阀泄压的气动装置，所述针阀泄压的气动装置设有充气伸缩件3、从动件4、自泄压件6和开闭机构5，通过对所述充气伸缩件3进行充气，能够带动所述从动件4对所述气控水箱内的排水阀的开关进行打开，从而实现排水，再利用所述开闭机构5中的挡位台51，在所述自泄压件6跟随所述充气伸缩件3的活动端移动的过程中对所述自泄压件6进行挡位，使所述自泄压件6能够插入所述充气伸缩件3内腔，所述自泄压件6中的排气段61会与所述充气伸缩件3内腔连通，从而对所述充气伸缩件3进行自动泄压。在无需使用额外的电磁阀、管路和电路的情况下，本发明实施例通过设置简单的自泄压件6和开闭机构5，就能实现所述充气伸缩件3的自泄压功能，因此具有结构精简、运行可靠、节省成本的优点。
以上是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (13)

  1. 一种针阀泄压的气动装置，其特征在于，包括壳体、进气盖、充气伸缩件、从动件和自泄压件，所述进气盖固定于所述壳体上部并与所述充气伸缩件密封连通，所述进气盖能够往所述充气伸缩件内充气，所述充气伸缩件在充气后能够在所述壳体内膨胀伸长，所述从动件连接于所述充气伸缩件的活动端，所述从动件能够到达所述壳体底部；
    所述针阀泄压的气动装置还包括开闭机构，所述自泄压件连接于所述充气伸缩件的活动端，所述自泄压件设有排气段，在充气时，所述开闭机构能够使所述排气段和所述充气伸缩件的内腔相互隔离；在所述充气伸缩件完全膨胀伸长后，所述开闭机构能够使所述排气段与所述充气伸缩件的内腔连通并使所述充气伸缩件泄气收缩。
  2. 根据权利要求1所述的针阀泄压的气动装置，其特征在于，所述充气伸缩件底部设有承接平台，所述承接平台内设有连通孔，所述自泄压件能够在所述连通孔中竖直滑动，所述自泄压件还设有密封段，所述密封段位于所述排气段上方，所述密封段的侧壁能够紧贴在所述连通孔的孔壁上并能对所述连通孔进行密封；
    所述排气段能够通过所述连通孔与所述充气伸缩件的内腔连通。
  3. 根据权利要求2所述的针阀泄压的气动装置，其特征在于，所述排气段设有泄气槽，所述泄气槽设有连通端和出气端，所述连通端位于所述泄气槽的上端，所述出气端位于所述泄气槽的下端，所述连通端与所述出气端通过所述泄气槽的槽体相互连通，当所述连通端向上穿过所述连通孔时，所述充气伸缩件的内腔能够通过所述连通孔进行泄气收缩。
  4. 根据权利要求2所述的针阀泄压的气动装置，其特征在于，所述排气段设有泄气柱，所述泄气柱表面连贯完整，所述泄气柱连接于所述密封段下方，所述泄气柱的横截面积小于所述连通孔的横截面积，当所述泄气柱向上穿过所述连通孔时，所述充气伸缩件的内腔能够通过所述连通孔与所述泄气柱之间的 间隙进行泄气收缩。
  5. 根据权利要求2所述的针阀泄压的气动装置，其特征在于，所述自泄压件的上端设有密封凸块，所述密封凸块凸出于所述密封段的侧壁，所述密封凸块能够紧贴于所述连通孔的开口上并对所述连通孔进行密封，所述自泄压件的下端设有限位凸块，所述限位凸块凸出于所述自泄压件的侧壁。
  6. 根据权利要求5所述的针阀泄压的气动装置，其特征在于，所述开闭机构包括挡位台，所述挡位台固定于所述壳体下部并设于所述自泄压件的下方，所述挡位台能与所述限位凸块的底部相抵接并阻止所述自泄压件向下运动，在所述充气伸缩件完全膨胀伸长后，所述自泄压件能够相对于所述充气伸缩件的活动端向上运动并使所述排气段向上穿过所述连通孔。
  7. 根据权利要求2所述的针阀泄压的气动装置，其特征在于，所述排气段的长度和所述密封段的长度均大于所述承接平台的竖直厚度。
  8. 根据权利要求5所述的针阀泄压的气动装置，其特征在于，所述开闭机构还包括复位台，所述复位台固定于所述进气盖上，所述复位台位于所述自泄压件的上方并能在所述充气伸缩件收缩上移时与所述密封凸块的顶部相抵接，所述复位台能够使所述自泄压件相对于所述充气伸缩件的活动端向下移动并使所述连通孔与所述密封段紧贴以恢复密封状态。
  9. 根据权利要求8所述的针阀泄压的气动装置，其特征在于，所述直动泄压的气动装置还包括复位弹簧，所述复位弹簧设于所述从动件顶部与所述壳体底部之间，所述复位弹簧能够使所述从动件具有向着所述复位台方向移动的趋势。
  10. 根据权利要求8所述的直动泄压的气动装置，其特征在于，所述从动件包括连接盖和顶筒，所述连接盖固定于所述承接平台下方，所述顶筒固定于所述连接盖的下方，所述顶筒的内腔与外部大气连通。
  11. 根据权利要求10所述的直动泄压的气动装置，其特征在于，所述壳体包括导向孔，所述导向孔设于所述壳体底部，所述顶筒能够插入所述导向孔中进行上下移动。
  12. 一种气控排水阀，其特征在于，包括如权利要求1-11任一项所述的针阀泄压的气动装置。
  13. 一种水箱，其特征在于，包括如权利要求1-11任一项所述的针阀泄压的气动装置。
PCT/CN2021/144018 2021-11-29 2021-12-31 一种针阀泄压的气动装置、一种气控排水阀及一种水箱 WO2023092823A1 (zh)

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