CN115853083A - Pneumatic device, pneumatic control drain valve and water tank - Google Patents
Pneumatic device, pneumatic control drain valve and water tank Download PDFInfo
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- CN115853083A CN115853083A CN202211593749.2A CN202211593749A CN115853083A CN 115853083 A CN115853083 A CN 115853083A CN 202211593749 A CN202211593749 A CN 202211593749A CN 115853083 A CN115853083 A CN 115853083A
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- pressure
- self
- piece
- inflatable
- air
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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
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Aviation & Aerospace Engineering (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a pneumatic device, a pneumatic control drain valve and a water tank, wherein the pneumatic device comprises an air inlet cover, an inflatable telescopic piece, a driven piece, a self-pressure-relief piece and an opening and closing mechanism, wherein an external air pump is connected with the air inlet cover and can be used for inflating air into the inflatable telescopic piece, the opening and closing mechanism can enable an exhaust section and an inner cavity of the inflatable telescopic piece to be mutually isolated during inflation, and the inflatable telescopic piece can expand and extend and drive the driven piece to open the external drain valve for draining water during inflation. After the drainage is finished, the inflatable extensible part continuously extends to a preset position, the opening and closing mechanism enables the exhaust section of the self-pressure relief part to penetrate through the communication hole, the pressure relief groove is communicated with the inner cavity of the inflatable extensible part, the inflatable extensible part is deflated and contracted, and therefore the drain valve can gradually reset and close the drainage, and automatic pressure relief is achieved. The exhaust section is located to the groove of disappointing for the slip of exhaust section and intercommunicating pore is more smooth and easy, and it is more stable to lose heart, has reduced the trouble of disappointing, has improved the efficiency of losing heart moreover, has reduced manufacturing cost.
Description
The application is a divisional application with the application date of 2021.11.29, the application number of 202111436971.7 and the application name of a pneumatic device for needle valve pressure relief, a pneumatic control drain valve and a water tank.
Technical Field
The invention relates to the technical field of pneumatic devices, in particular to a pneumatic device, a pneumatic control drain valve and a water tank.
Background
The traditional toilet bowl mostly uses a mechanical drainage valve to drain water for the water tank, and when drainage is needed, the drainage valve is driven to be opened by a manual pressing mode, so that drainage is realized. Along with the improvement of the requirements of people on living quality, the non-contact drain valve is gradually applied to the intelligent toilet. Due to the lack of a manually depressed mechanical drive, non-contact drain valves require an additional pneumatic device to trigger the actuation of the drain valve.
Pneumatic means who uses commonly in the existing market is by the air pump, gasbag and relief valve are constituteed, when needs drainage, it makes the gasbag aerify to start the air pump, thereby the gasbag aerifys the back expansion extension drive driven lever and triggers the drain valve, but because the current pneumatic means in market does not take the pressure release function, in order to realize pneumatic means's pressure release function, current pneumatic means need dispose dedicated pressure release module usually, add the solenoid valve, exhaust in order to realize the pressure release to the gasbag through the gas circuit conversion, but this kind of scheme need additionally increase solenoid valve and pipeline, parts such as circuit, and is with high costs, and the structure is complicated, occupation space is big, inside walks the line in a jumble, assembly and maintenance are all very troublesome. In addition, some current pneumatic means are provided with automatic pressure release structure, and this automatic pressure release structure loses heart through the gasbag and realizes, but has the problem that loses heart failure rate is high.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a pneumatic device which can reduce air leakage faults and improve air leakage efficiency.
The invention also provides a pneumatic control drain valve with the pneumatic device and a water tank.
The pneumatic device comprises a shell, an air inlet cover, an inflatable telescopic piece, a driven piece and a self-pressure-relief piece, wherein the air inlet cover is fixed at the upper part of the shell and is in sealed communication with the inflatable telescopic piece; the pneumatic device further comprises an opening and closing mechanism, the self-pressure-relief piece is connected to the movable end of the inflatable telescopic piece and can vertically slide in the communicating hole, the self-pressure-relief piece is provided with an exhaust section, the exhaust section is provided with an air relief groove, the air relief groove is provided with a communicating end and an air outlet end, the communicating end is located at the upper end of the air relief groove, the air outlet end is located at the lower end of the air relief groove, and the communicating end and the air outlet end are communicated with each other through a groove body of the air relief groove; when the inflatable telescopic piece is inflated, the opening and closing mechanism can isolate the exhaust section from the inner cavity of the inflatable telescopic piece; after the expansion and extension of the inflatable telescopic piece reaches the preset position, the opening and closing mechanism can enable the communication end to penetrate out of the communication hole upwards, and the inner cavity of the inflatable telescopic piece can be deflated and contracted through the air leakage groove.
The pneumatic device provided by the embodiment of the invention has at least the following beneficial effects:
through setting up the air inlet cover, aerifing extensible member, follower, from pressure release and closing mechanism, wherein outside air pump is connected with the air inlet cover, can fill gas into and aerify in the extensible member, when aerifing, closing mechanism can make the inner chamber mutual isolation of exhaust section and aerifing the extensible member, consequently aerify the in-process, aerify the extensible member can lossless, expand fast and extend to drive the follower and open to outside drain valve and carry out the drainage. After the drainage is finished, the inflatable extensible part continuously extends to a preset position, the opening and closing mechanism enables the exhaust section of the self-pressure relief part to penetrate through the communication hole, the pressure relief groove is communicated with the inner cavity of the inflatable extensible part, the inflatable extensible part is deflated and contracted, and therefore the drain valve can gradually reset and close the drainage, and automatic pressure relief is achieved. The air discharging section is arranged in the air discharging groove, so that the air discharging section and the communicating hole can slide more smoothly, air discharging is more stable, air discharging faults are reduced, air discharging efficiency is improved, and production cost is reduced.
According to some embodiments of the invention, the self-pressure-relief piece is further provided with a sealing section, the sealing section is positioned above the exhaust section, and the side wall of the sealing section can be in sealing fit with the hole wall of the communication hole.
According to some embodiments of the invention, a sealing convex block is arranged at the upper end of the self-pressure-releasing piece, the sealing convex block protrudes out of the side wall of the sealing section, and the sealing convex block can be tightly attached to the opening of the communication hole and seal the communication hole.
According to some embodiments of the invention, a limiting bump is arranged at the lower end of the self-pressure-relief piece, and the limiting bump protrudes out of the side wall of the self-pressure-relief piece; the opening and closing mechanism comprises a gear table, the gear table is fixed to the lower portion of the shell and is arranged below the pressure relief piece, the gear table can be abutted against and prevented from the bottom of the limiting bump and can move downwards from the pressure relief piece, and therefore when the movable end of the inflatable telescopic piece moves downwards, the exhaust section can penetrate out of the communicating hole upwards.
According to some embodiments of the invention, the opening and closing mechanism further comprises a reset table fixed to the intake cover, the reset table is located above the self-pressure-releasing member and can abut against the top of the sealing protrusion when the expansion and contraction member moves up, and the reset table can move the self-pressure-releasing member downward relative to the movable end of the expansion and contraction member and make the communication hole and the sealing section in sealing fit.
According to some embodiments of the invention, the pneumatic device further comprises a return spring disposed between the top of the follower and the bottom of the housing, the return spring being capable of causing the follower to have a tendency to move towards the return station.
According to some embodiments of the invention, the follower comprises a connecting cover and a top cylinder, the connecting cover is fixed below the bearing platform, the top cylinder is fixed below the connecting cover, and an inner cavity of the top cylinder is communicated with the external atmosphere.
According to some embodiments of the invention, a frictional force between the self-pressure-releasing member and the communication hole is larger than a self-weight of the self-pressure-releasing member.
According to some embodiments of the invention, the preset position is a position after the inflatable elastic member is fully expanded and extended.
According to the second aspect embodiment of the invention, the pneumatic control drain valve comprises the pneumatic device.
According to the water tank of the third aspect embodiment of the invention, the pneumatic control drainage valve is arranged.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a schematic disassembled view of a first embodiment of the pneumatic device of the present invention;
FIG. 2 is a schematic structural view of a self bleed in a first embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a first embodiment of the pneumatic device of the present invention;
FIG. 4 is a partial view of A of FIG. 3;
FIG. 5 is a schematic view of a first state of the first embodiment of the pneumatic device of the present invention;
FIG. 6 is a schematic representation of a second state of the pneumatic device of the present invention;
FIG. 7 is a schematic view of a third state of the pneumatic device of the present invention;
FIG. 8 is a schematic representation of a fourth state of the pneumatic device of the present invention;
FIG. 9 is a schematic structural view of a second embodiment of the pneumatic device of the present invention;
FIG. 10 is a schematic structural view of a self bleed in a second embodiment of the present invention;
FIG. 11 is a schematic structural view of a third embodiment of the pneumatic device of the present invention;
FIG. 12 is a schematic view of the construction of the inflatable telescopic element of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to, for example, the upper, lower, etc., is indicated based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, a plurality means two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, a first embodiment of the present invention discloses a pneumatic device, which includes a housing 1, an air inlet cover 2, an inflatable telescopic element 3, a driven element 4 and a self-pressure-releasing element 6, wherein the air inlet cover 2 is fixed on the upper portion of the housing 1 and is in sealed communication with the inflatable telescopic element 3, the air inlet cover 2 is in communication with an external air pump, the air inlet cover 2 can inflate the inflatable telescopic element 3 by inflating with the external air pump, the inflatable telescopic element 3 can expand and extend in the housing 1 after inflating, the driven element 4 is connected to the movable end of the inflatable telescopic element 3, the driven element 4 can move along with the movable end of the inflatable telescopic element 3, and the driven element 4 can reach the bottom of the housing 1 after the inflatable telescopic element 3 is fully expanded. In the process that the driven member 4 reaches the bottom of the shell 1, the driven member 4 can push an external drain valve to be gradually opened and perform a drain operation. The inflatable extensible member 3 is an object capable of generating elastic deformation after being inflated, such as a telescopic folding airbag, a telescopic balloon, a telescopic air film, and the like, in this embodiment, the inflatable extensible member 3 is preferably a telescopic folding airbag, and the telescopic folding airbag has a relatively stable extension motion path and is suitable for being used in a stable motion system.
Referring to fig. 2 and 3, pneumatic means still includes closing mechanism 5, connect in from pressure release 6 aerify the expansion end of extensible member 3, follow when aerifing the expansion extension or losing the air and shorten from pressure release 6 aerify extensible member 3 the expansion end of aerifing extensible member 3 moves, wherein from pressure release 6 is equipped with exhaust section 61 when aerifing the expansion extension of extensible member 3, closing mechanism 5 can make exhaust section 61 with the inner chamber of aerifing extensible member 3 keeps apart each other, thereby makes aerifing extensible member 3 can expand the extension without loss aerifing extensible member 3 after aerifing the complete expansion extension of extensible member 3, aerify extensible member 3 can drive touch from pressure release 6 the open-close structure, closing mechanism 5 can make exhaust section 61 with the inner chamber intercommunication of aerifing extensible member 3 makes aerify extensible member 3 loses the air and contracts. Aerify the flexible piece 3 and lose heart the shrink after, follower 4 can follow aerify the expansion end subassembly upward movement of flexible piece 3, the switch of outside drain valve can close gradually and finally close this moment to realize aerify the automatic pressure release of flexible piece 3 and carry out the function of closing water.
The first embodiment of the invention has the following beneficial effects:
the pneumatic device provided by the embodiment of the invention is provided with an air inlet cover 2, an inflatable telescopic part 3, a driven part 4, a self-pressure-releasing part 6 and an opening and closing mechanism 5, wherein the air inlet cover 2 is connected with an external air pump, air can be filled into the inflatable telescopic part 3 through the external air pump, the inflatable telescopic part 3 can expand and extend under the pushing action of the air pressure due to the increase of the internal air pressure, in the process, the opening and closing mechanism 5 can control an air discharging section 61 in the self-pressure-releasing part 6 to be mutually isolated from an inner cavity of the inflatable telescopic part 3, so that the air in the inner cavity of the inflatable telescopic part 3 cannot leak, the inflatable telescopic part 3 can normally expand and extend without loss, in the extending process, the action force of the air on the bottom of the inflatable telescopic part 3 is greater than the opening and closing resistance of an external drain valve, and the inflatable telescopic part 3 can drive the driven part 4 to open the external drain valve, thereby completing the triggering operation of the drain valve. Aerify extensible member 3 after the complete expansion and elongation, can touch from pressure release member 6 closing mechanism 5, closing mechanism 5 promotes from pressure release member 6, make the inner chamber of aerifing extensible member 3 with exhaust section 61 intercommunication, it loses heart to aerify extensible member 3, because inside atmospheric pressure reduces, atmospheric pressure is right the effort of aerifing extensible member 3 bottom reduces gradually and is less than the switch restoring force of outside drain valve or is less than aerify the elastic shrinkage power of extensible member 3 itself to make the drain valve can reset gradually and close the drainage. Therefore, the automatic pressure relief of the inflatable expansion piece 3 can be realized by utilizing the self-pressure relief piece 6 and the opening and closing mechanism 5, so that additional parts such as an electromagnetic valve are saved, and the automatic pressure relief device has the advantages of high pressure relief efficiency and low cost.
Specifically, referring to fig. 12, in order to ensure that the inflatable telescopic part 3 does not leak air and consume energy of the air pump when being expanded and extended, a receiving platform 31 is arranged at the bottom of the inflatable telescopic part 3, a communicating hole 311 is formed in the receiving platform 31, the self-pressure-releasing part 6 can vertically slide in the communicating hole 311, a sealing section 64 is further arranged on the self-pressure-releasing part 6, the sealing section 64 is located above the exhaust section 61, and in order to achieve better sealing, the sealing section 64 and the communicating hole 311 are in interference fit. In this embodiment, a suitable damping is provided between the self-pressure-releasing member 6 and the communication hole 311, so that the friction force between the self-pressure-releasing member 6 and the communication hole 311 is greater than the self-weight of the self-pressure-releasing member 6, and in other embodiments, the self-pressure-releasing member 6 may have a greater self-weight, so as to facilitate resetting. When the inflatable telescopic part 3 expands and extends, the side wall of the sealing section 64 can cling to the hole wall of the communicating hole 311 and can seal the communicating hole 311, so that the sealing state of the inner cavity of the inflatable telescopic part 3 is ensured, and the energy loss of an air pump is avoided. When the air is deflated, the exhaust section 61 can be communicated with the inner cavity of the inflatable telescopic part 3 through the communication hole 311, so that the air is exhausted and the pressure is relieved.
Referring to fig. 4, in the first embodiment of the present invention, the exhaust segment 61 is specifically provided with an air discharging groove 611, the air discharging groove 611 is provided with a communicating end 6111 and an air discharging end 6112, the communicating end 6111 is located at the upper end of the air discharging groove 611, the air discharging end 6112 is located at the lower end of the air discharging groove 611, the communicating end 6111 and the air discharging end 6112 are communicated with each other through a groove body of the air discharging groove 611, when the communicating end 6111 passes through the communicating hole 311 upwards, the inner cavity of the inflatable telescopic member 3 can be deflated and contracted through the communicating hole 311, when self-pressure relief is performed, the communicating end 6111 preferentially passes through the communicating hole 311 to be communicated with the inner cavity of the inflatable telescopic member 3, and then the gas in the inner cavity of the inflatable telescopic member 3 is communicated to the air discharging end 6112 from the communicating end 6111 and is discharged to the air discharging atmosphere from the air discharging end 6112, so as to form a pressure relief effect.
Referring to fig. 9 and 10, the present invention further discloses a second embodiment, which is different from the first embodiment, the exhaust section 61 is specifically provided with an air leakage column 612, the surface of the air leakage column 612 is completely penetrated without a groove, the air leakage column 612 is connected below the sealing section 64, the cross-sectional area of the air leakage column 612 is smaller than the cross-sectional area of the communication hole 311, therefore, when the air leakage column 612 is located on the communication hole 311, the fitting manner of the air leakage column 612 and the communication hole 311 is converted from interference fit into clearance fit, the wall surface of the air leakage column 612 and the inner wall surface of the communication hole 311 form an exhaust gap, so that the air in the inner cavity of the inflatable telescopic member 3 is exhausted from the exhaust gap, and therefore, when the air leakage column 612 upwardly passes through the communication hole 311, the inner cavity of the inflatable telescopic member 3 can be deflated through the communication hole 311. In other embodiments, a combination of the first and second embodiments may be adopted, that is, the air leakage column 612 is used to perform pressure relief, and the air leakage groove 611 is added to the air leakage column 612 to enlarge the air exhaust gap, so as to further improve the air leakage efficiency.
Be equipped with sealed lug 62 from the upper end of pressure release 6, sealed lug 62 protrusion in the lateral wall of seal section 64, sealed lug 62 can be used for right the intercommunicating pore 311 carries out the upper portion and seals, cooperates the sealed effect of the lateral part of seal section 64 can further strengthen sealed effect, and can also be right from pressure release 6 is relative aerify the scope of extensible member 3 downstream and prescribe a limit to, be equipped with spacing lug 63 from the lower extreme of pressure release 6, spacing lug 63 protrusion in from the lateral wall of pressure release 6, spacing lug 63 is used for right from pressure release 6 to aerify the scope of extensible member 3 upward movement prescribe a limit to. Opening-closing mechanism 5 includes fender position 51, fender position 51 is fixed in casing 1 lower part is located from the below of pressure release 6, aerify extensible member 3 drive when the inflation is extended from pressure release 6 downstream, from pressure release 6 can for aerify extensible member 3's expansion end upward movement and make exhaust section 61 upwards passes the intercommunicating pore. Specifically, when the gear table 51 can abut against the bottom of the limit protrusion 63, the inflatable telescopic element 3 continues to move downward, and under the reaction force of the gear table 51, the self-pressure-relief element 6 moves upward relative to the inflatable telescopic element 3, the air-relief groove 611 or the air-relief column 612 also moves upward relative to the inflatable telescopic element 3, and finally the air-relief groove 611 or the air-relief column 612 is communicated with the inner cavity of the inflatable telescopic element 3, so that the air in the inner cavity of the inflatable telescopic element 3 is exhausted.
In other embodiments, the self-pressure-releasing member 6 may have a large self-weight, such that when the air-filled telescopic member 3 is deflated, the self-pressure-releasing member 6 can return to the receiving platform 31 by the self-weight to seal the communication hole 311, and in this embodiment, in order to enable the self-pressure-releasing member 6 after being moved upward to return to the initial position again, the opening and closing mechanism 5 further includes a resetting platform 52, the resetting platform 52 is fixed on the air intake cover 2, the resetting platform 52 is located above the self-pressure-releasing member 6, after the air-filled telescopic member 3 is deflated, the air-filled telescopic member 3 can be retracted and drive the self-pressure-releasing member 6 to move upward, when moving to a certain position, the self-pressure-releasing member 6 can abut against the top of the sealing bump 62, at this time, the air-filled telescopic member 3 continues to be retracted, and under the reaction force of the resetting platform 52, the self-pressure-releasing member 6 can move downward relative to the movable end of the air-filled telescopic member 3, after moving to the limit position, the side wall of the sealing segment 64 abuts against the communication hole first, so that the sealing platform 311 first, the sealing platform is abutted, and the sealing hole wall is restored to the sealing platform 311, thereby completing the sealing state of the sealing expansion and the sealing platform 311.
The length of the exhaust section 61 is greater than the vertical thickness of the receiving platform 31, so when the self-pressure-relief piece 6 moves upward relative to the inflatable telescopic piece 3, the upper end of the communication end 6111 or the air leakage column 612 can enter the inner cavity of the inflatable telescopic piece 3, and because the length of the exhaust section 61, that is, the length of the groove body of the air leakage groove 611 or the length of the air leakage column 612 is greater than the vertical thickness of the receiving platform 31, the lower end of the air outlet end 6112 or the air leakage column 612 can be kept below the receiving platform 31, so that the gas in the inner cavity of the inflatable telescopic piece 3 can pass through the receiving platform 31 through the air leakage groove 611 or a gap between the air leakage column 612 and the communication hole 311 and can be exhausted 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 sidewall of the sealing section 64 abuts against the hole wall of the communication hole 311, the communication end 6111 or the lower end of the gas release column 612 can be located below the receiving platform 31, and thus the communication hole 311 is not communicated with the communication end 6111 or generates a gas release gap with the gas release column 612, and the gas leakage of the inflatable extensible member 3 can be further prevented when the inflatable extensible member is expanded and extended.
In addition, the invention can also achieve the effects of delayed water shut-off and accurate control which can be realized when the common electromagnetic valve carries out pressure relief on the inflatable expansion piece 3. By reasonably setting the length of the sealing section 64, the effect of accurately controlling the delay Guan Shuihe which is relatively fixed can be achieved. When the external drainage valve is opened, the sealing section 64 is still in a sealing state with the communication hole 311, the sealing projection 62 is still on the receiving platform 31, in the process that the inflatable telescopic member 3 continues to expand and extend, the external drainage valve gradually opens and reaches a maximum opening degree when the limiting projection 63 contacts the gear table 51, in the process, the sealing section 64 is always in the sealing state with the communication hole 311, then the self-pressure-releasing member 6 moves upwards relative to the receiving platform 31, but because a certain vertical distance exists between the upper end of the communication end 6111 or the air-releasing column 612 and the sealing projection 62, the communication hole 311 cannot be immediately communicated with the inner cavity of the inflatable telescopic member 3, before the upper end of the communication end 6111 or the air-releasing column 612 moves above the receiving platform 31, the external drainage valve always keeps in the state of the valve opening degree, and only after the upper end of the communication end 6111 or the air-releasing column 612 moves above the receiving platform 31, the upper end of the communication end 6111 or the air-releasing column 612 is gradually communicated with the inner cavity of the inflatable telescopic member, so that the external drainage valve gradually contracts, and the external drainage valve gradually closes the inflatable telescopic member 3. By reasonably setting the distance from the communication end 6111 to the sealing lug 62, namely the length of the sealing section 64, and setting the friction between the self-pressure-relief piece 6 and the communication hole 311, the effect of accurately controlling the time delay Guan Shuihe when the common electromagnetic valve relieves the pressure of the inflatable expansion piece 3 can be achieved. Therefore, through the arrangement, the electromagnetic valve and the related pipeline can be replaced by a very simple structure to realize the pressure relief function, and the effect of accurately controlling the time delay Guan Shuihe of the electromagnetic valve can be achieved.
In order to drive the external drain valve, the follower 4 includes a connection cover 41 and a top cylinder 42, and the connection cover 41 is fixed below the receiving platform 31, so that the follower 4 can move along with the inflatable telescopic member 3. The top cylinder 42 is fixed below the connecting cover 41, and the inner cavity of the top cylinder 42 is communicated with the outside atmosphere. When the expansion piece 3 inflates for expansion and extension, the expansion piece 3 can push the top cylinder 42 to move downwards, and the bottom of the top cylinder 42 can touch the switch of an external drain valve, so that the drain valve is opened. When the inflatable telescopic element 3 is deflated, the gas in the inner cavity of the inflatable telescopic element 3 enters the inner cavity of the top cylinder 42 from the exhaust section 61 and is exhausted to the outside atmosphere from the inner cavity of the top cylinder 42.
In order to restrict the direction of motion of follower 4, casing 1 still includes guiding hole 11, guiding hole 11 is located 1 bottom of casing, top cylinder 42 can insert reciprocate in the guiding hole 11, thereby ensures aerify extensible member 3 with the switch that outside drain valve can be aimed at to follower 4, has also guaranteed the activity face can correctly receive the force, realizes normally turning over a sunken and recovery.
The working principle and the working process of the invention are as follows:
referring to fig. 5, in the initial state, the top of the sealing protrusion 62 abuts against the reset table 52, 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 sealing protrusion 62 abuts against the receiving platform 31 to further seal the communication hole 311, meanwhile, the exhaust section 61 is located below the receiving platform 31, and the exhaust section 61 and the inner cavity of the inflatable telescopic member 3 are isolated from each other. Referring to fig. 6, when water needs to be drained, an external air pump starts to inflate the inner cavity of the inflatable telescopic part 3 through the air inlet cover 2, the air pressure acting force is greater than the reset acting force of an external drain valve and/or the elastic restoring force of the inflatable telescopic part 3, the inflatable telescopic part 3 starts to expand and extend and drives the driven part 4 to move downwards, and after the driven part 4 extends to a certain length, the driven part 4 touches a switch of the external drain valve and overcomes the resistance of the switch to open the drain valve, so that water drainage is achieved. Referring to fig. 7, the expansion and elongation of the inflatable telescopic element 3 continues, the bottom of the limit projection 63 of the self-pressure-releasing element 6 at the movable end of the inflatable telescopic element 3 abuts against the gear table 51, and thereafter the inflatable telescopic element 3 continues to expand and push the self-pressure-releasing element 6 to move downwards continuously, but due to the gear action of the gear table 51, the self-pressure-releasing element 6 is stationary relative to the gear table 51, but due to the movable end of the inflatable telescopic element 3 continuing downwards, the receiving platform 31 moves downwards gradually, and at this time, the external drain valve is still in an open state, and the time from the time when the receiving platform 31 leaves the sealing projection 62 to the time when the receiving platform 31 is located above the communication end 6111 or above the upper end of the air-releasing column 612 is the time delay from opening to closing, once the receiving platform 31 moves downwards below the communication end 6111 or below the upper end of the air-releasing column 612, the inner cavity of the inflatable telescopic element 3 passes through the communication hole 311 to communicate with the air-releasing groove or the air-releasing column 612, once the receiving platform 31 moves downwards, and the air-releasing element passes through the air-releasing section 611, so that the air-releasing element can operate reliably, and the other structures without the time delay structure, and the external drain valve can be controlled accurately.
Referring to fig. 8, after pressure relief, because the air pressure acting force inside the inflatable extensible member 3 is gradually weakened, the reset acting force of the external drain valve and/or the elastic restoring force of the inflatable extensible member 3 are gradually greater than the air pressure acting force, the inflatable extensible member 3 can contract and drive the driven member 4 and the self-pressure relief member 6 to move upwards, in the process of moving upwards, the switch of the drain valve can be gradually closed to realize automatic water stop, after moving to a certain height, the side wall of the sealing section 64 is abutted against the hole wall of the communicating hole 311 to firstly form sealing, the top of the sealing projection 62 is also abutted against the reset table 52, and because the inflatable extensible member 3 can continue to contract and move upwards, the receiving platform 31 can gradually approach the sealing projection 62 and finally abutted against the sealing projection 62 to further realize reset.
Referring to fig. 11, the present invention further discloses a third embodiment, in which a return structure is added to the first embodiment or the second embodiment, specifically, the pneumatic device further includes a return spring 7, the return spring 7 is disposed between the top of the driven member 4 and the bottom of the housing 1, and the return spring 7 can make the driven member 4 have a tendency of moving toward the return table 52. When inflating the shrink of expansion piece 3 disappointing, reset spring 7 can cooperate the restoring force of outside drainage valve switch right inflate expansion piece 3 with reset from pressure release 6, have faster recovery rate, efficiency is higher.
According to the invention, the movable self-pressure-relief piece 6 and the simple opening and closing mechanism 5 are used, the self-pressure-relief function of the inflatable extensible piece 3 can be realized by utilizing the self-extension and shortening characteristics of the inflatable extensible piece 3, and the effects of accurate control and delayed water shut-off during pressure relief of the electromagnetic valve can be realized by setting the ratio of the length of the sealing section 64 to the vertical thickness of the bearing platform 31.
The embodiment of the invention also discloses a pneumatic control exhaust valve and a water tank (not shown in the figure), wherein the pneumatic control exhaust valve and the water tank both comprise the pneumatic device, the pneumatic device is provided with an inflatable telescopic part 3, a driven part 4, a self-pressure-relief part 6 and an opening and closing mechanism 5, the driven part 4 can be driven to open and close a drain valve in the pneumatic control water tank by inflating the inflatable telescopic part 3, so that water is drained, a gear table 51 in the opening and closing mechanism 5 is utilized, the self-pressure-relief part 6 is shifted in the process that the self-pressure-relief part 6 moves along with the movable end of the inflatable telescopic part 3, the self-pressure-relief part 6 can be inserted into the inner cavity of the inflatable telescopic part 3, and an exhaust section 61 in the self-pressure-relief part 6 is communicated with the inner cavity of the inflatable telescopic part 3, so that the inflatable telescopic part 3 is automatically relieved. Under the condition of not using additional electromagnetic valves, pipelines and circuits, the self-pressure relief function of the inflatable telescopic part 3 can be realized by arranging the simple self-pressure relief part 6 and the opening and closing mechanism 5, so that the self-pressure relief device has the advantages of simple structure, reliability in operation and cost saving.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (11)
1. The pneumatic device is characterized by comprising a shell, an air inlet cover, an inflatable expansion piece, a driven piece and a self-pressure-relief piece, wherein the air inlet cover is fixed on the upper part of the shell and is in sealed communication with the inflatable expansion piece;
the pneumatic device further comprises an opening and closing mechanism, the self-pressure-relief piece is connected to the movable end of the inflatable telescopic piece, the self-pressure-relief piece can vertically slide in the communicating hole, the self-pressure-relief piece is provided with an exhaust section, the exhaust section is provided with an air relief groove, the air relief groove is provided with a communicating end and an air outlet end, the communicating end is located at the upper end of the air relief groove, the air outlet end is located at the lower end of the air relief groove, and the communicating end and the air outlet end are mutually communicated through a groove body of the air relief groove;
when the inflatable telescopic piece is inflated, the opening and closing mechanism can isolate the exhaust section from the inner cavity of the inflatable telescopic piece; after the expansion and extension of the inflatable telescopic piece reaches the preset position, the opening and closing mechanism can enable the communication end to penetrate out of the communication hole upwards, and the inner cavity of the inflatable telescopic piece can be deflated and contracted through the air leakage groove.
2. The pneumatic device according to claim 1, wherein the self-pressure-releasing member is further provided with a sealing section which is positioned above the exhaust section, and the side wall of the sealing section can be in sealing fit with the hole wall of the communication hole.
3. The pneumatic device according to claim 2, wherein a sealing bump is arranged at the upper end of the self-pressure-releasing piece, the sealing bump protrudes out of the side wall of the sealing section, and the sealing bump can be tightly attached to the opening of the communication hole and seal the communication hole.
4. The pneumatic device according to claim 3, wherein a limiting bump is arranged at the lower end of the self-pressure-relief piece, and the limiting bump protrudes out of the side wall of the self-pressure-relief piece; the opening and closing mechanism comprises a gear table, the gear table is fixed to the lower portion of the shell and is arranged below the pressure relief piece, the gear table can be abutted against and prevented from the bottom of the limiting bump and can move downwards from the pressure relief piece, and therefore when the movable end of the inflatable telescopic piece moves downwards, the exhaust section can penetrate out of the communicating hole upwards.
5. The pneumatic device according to claim 2, wherein the opening and closing mechanism further comprises a reset table fixed to the intake cover, the reset table being located above the self-pressure-releasing member and capable of abutting against the top of the sealing projection when the expansion and contraction member moves upward, the reset table being capable of moving the self-pressure-releasing member downward relative to the movable end of the expansion and contraction member and bringing the communication hole into sealing engagement with the sealing section.
6. The pneumatic device of claim 5, further comprising a return spring disposed between the top of the follower and the bottom of the housing, the return spring being capable of causing the follower to have a tendency to move toward the return station.
7. The pneumatic device according to claim 5, wherein the driven member comprises a connecting cover and a top cylinder, the connecting cover is fixed below the bearing platform, the top cylinder is fixed below the connecting cover, and an inner cavity of the top cylinder is communicated with the external atmosphere.
8. The pneumatic device according to claim 1, wherein a frictional force between the self-pressure-releasing member and the communication hole is larger than a self-weight of the self-pressure-releasing member.
9. The pneumatic device of claim 1, wherein the preset position is a fully expanded, extended position of the inflatable bellows.
10. An air controlled drain valve, characterized in that it comprises a pneumatic device according to any one of claims 1 to 9.
11. A water tank comprising an air controlled drain valve as claimed in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211593749.2A CN115853083A (en) | 2021-11-29 | 2021-11-29 | Pneumatic device, pneumatic control drain valve and water tank |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211593749.2A CN115853083A (en) | 2021-11-29 | 2021-11-29 | Pneumatic device, pneumatic control drain valve and water tank |
| CN202111436971.7A CN114232738A (en) | 2021-11-29 | 2021-11-29 | Pneumatic device for needle valve pressure relief, pneumatic control drain valve and water tank |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111436971.7A Division CN114232738A (en) | 2021-11-29 | 2021-11-29 | Pneumatic device for needle valve pressure relief, pneumatic control drain valve and water tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115853083A true CN115853083A (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211593910.6A Pending CN115787798A (en) | 2021-11-29 | 2021-11-29 | Pneumatic device, pneumatic control drain valve and water tank |
| CN202211593749.2A Pending CN115853083A (en) | 2021-11-29 | 2021-11-29 | Pneumatic device, pneumatic control drain valve and water tank |
| CN202111436971.7A Pending CN114232738A (en) | 2021-11-29 | 2021-11-29 | Pneumatic device for needle valve pressure relief, pneumatic control drain valve and water tank |
| CN202211639159.9A Pending CN115748908A (en) | 2021-11-29 | 2021-11-29 | Pneumatic device, pneumatic control drain valve and water tank |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211593910.6A Pending CN115787798A (en) | 2021-11-29 | 2021-11-29 | Pneumatic device, pneumatic control drain valve and water tank |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111436971.7A Pending CN114232738A (en) | 2021-11-29 | 2021-11-29 | Pneumatic device for needle valve pressure relief, pneumatic control drain valve and water tank |
| CN202211639159.9A Pending CN115748908A (en) | 2021-11-29 | 2021-11-29 | Pneumatic device, pneumatic control drain valve and water tank |
Country Status (2)
| Country | Link |
|---|---|
| CN (4) | CN115787798A (en) |
| WO (1) | WO2023092823A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115338768B (en) * | 2022-08-11 | 2023-10-27 | 恒迈新材料科技(南通)有限公司 | Polishing device with polishing pressure feedback compensation function |
| CN116716166B (en) * | 2023-06-13 | 2024-03-29 | 珠海美华医疗科技有限公司 | Splash-proof cap for sampling positive blood culture bottle and sampling method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204551652U (en) * | 2015-03-13 | 2015-08-12 | 厦门瑞尔特卫浴科技股份有限公司 | A kind of draining valve starting switch with pneumatic feel |
| CN108105457B (en) * | 2017-12-29 | 2023-09-05 | 厦门瑞尔特卫浴科技股份有限公司 | Gas-driven drainage device capable of relieving pressure |
| CN109914554A (en) * | 2019-02-02 | 2019-06-21 | 海益（厦门）建材工业有限公司 | A kind of delay switch and its working principle |
| CN211006926U (en) * | 2019-08-15 | 2020-07-14 | 厦门帝恒诺卫浴科技有限公司 | Toilet bowl flushing system |
| CN111561031B (en) * | 2020-04-16 | 2021-05-28 | 海益（厦门）建材工业有限公司 | Water inlet and water discharge combined control system and method |
| WO2021212252A1 (en) * | 2020-04-20 | 2021-10-28 | 厦门立业卫浴工业有限公司 | Air release valve and toilet water tank drainage valve opened by using air pressure |
| CN212641646U (en) * | 2020-06-05 | 2021-03-02 | 厦门立业卫浴工业有限公司 | Air pressure button device of drain valve |
| CN114232736A (en) * | 2021-11-29 | 2022-03-25 | 箭牌家居集团股份有限公司 | Pneumatic device for direct-acting pressure relief, pneumatic control drain valve and water tank |
-
2021
- 2021-11-29 CN CN202211593910.6A patent/CN115787798A/en active Pending
- 2021-11-29 CN CN202211593749.2A patent/CN115853083A/en active Pending
- 2021-11-29 CN CN202111436971.7A patent/CN114232738A/en active Pending
- 2021-11-29 CN CN202211639159.9A patent/CN115748908A/en active Pending
- 2021-12-31 WO PCT/CN2021/144018 patent/WO2023092823A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN114232738A (en) | 2022-03-25 |
| CN115748908A (en) | 2023-03-07 |
| WO2023092823A1 (en) | 2023-06-01 |
| CN115787798A (en) | 2023-03-14 |
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