CN114658076A - Toilet flushing device with hydraulic drain valve - Google Patents

Toilet flushing device with hydraulic drain valve Download PDF

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Publication number
CN114658076A
CN114658076A CN202210370524.4A CN202210370524A CN114658076A CN 114658076 A CN114658076 A CN 114658076A CN 202210370524 A CN202210370524 A CN 202210370524A CN 114658076 A CN114658076 A CN 114658076A
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CN
China
Prior art keywords
water
pump
nozzle
hydraulic
water outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210370524.4A
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Chinese (zh)
Inventor
李智生
陈雪瑜
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Guli Xiamen Technology Co Ltd
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Guli Xiamen Technology Co Ltd
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Filing date
Publication date
Application filed by Guli Xiamen Technology Co Ltd filed Critical Guli Xiamen Technology Co Ltd
Priority to CN202210370524.4A priority Critical patent/CN114658076A/en
Publication of CN114658076A publication Critical patent/CN114658076A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
    • E03D11/02—Water-closet bowls ; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl
    • 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
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00—Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
    • E03D11/13—Parts or details of bowls; Special adaptations of pipe joints or couplings for use with bowls, e.g. provisions in bowl construction preventing backflow of waste-water from the bowl in the flushing pipe or cistern, provisions for a secondary flushing, for noise-reducing
    • 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
    • E03D5/01—Special constructions of flushing devices, e.g. closed flushing system using flushing pumps

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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)
  • Sanitary Device For Flush Toilet (AREA)

Abstract

The invention discloses a toilet flushing device with a hydraulic drain valve, which comprises: the base body is provided with a bedpan, the upper part of the bedpan is provided with a washing and brushing opening, and the lower part of the bedpan is provided with a jet orifice; the water tank is used for providing flushing water for the washing opening and the jet opening, and is provided with a water outlet which is communicated with the jet opening through a water drainage channel; a hydraulic drain valve provided at a drain port of the water tank to control opening and closing of the drain port; the jet pump is arranged in the water tank and can convey water in the water tank to the washing port through a Venturi effect when the jet pump is started; and a water pump which supplies pressure water to the hydraulic drain valve and the jet pump to open the hydraulic drain valve and the jet pump, respectively. The invention not only can ensure effective flushing of the closestool, but also can effectively reduce the cost.

Description

Toilet flushing device with hydraulic drain valve
Technical Field
The invention relates to the technical field of sanitary ware, in particular to a toilet flushing device with a hydraulic drain valve.
Background
Along with the increasing popularization of low toilets, the flushing effect of the toilet also faces more tests, and the arrangement position of the water tank is required to be not higher than the upper surface of the toilet seat body as much as possible, so that the potential energy of water in the low-level water tank is not enough to effectively flush the toilet, and some toilets directly adopt a water tank-free design and utilize the water pressure of tap water to flush the toilet. However, when the toilet is flushed by the water pressure of the tap water, the flushing effect is affected by the water pressure of the tap water, so that the user experience is affected. In order to avoid the problem of influence on the flushing effect caused by unstable water pressure of tap water, some toilets adopt a water pump to pump water in a low-level water tank to flush the toilet, but only the water pump is used for flushing the toilet, so that the requirement on the power of the water pump is high, and the reduction of the cost of the water pump is not facilitated.
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a toilet flushing device with a hydraulic drain valve, which can ensure effective flushing of a toilet and can effectively reduce the cost.
In order to achieve the purpose, the invention adopts the technical scheme that: a toilet flushing device with a hydraulic drain valve, comprising:
the base body is provided with a bedpan, the upper part of the bedpan is provided with a washing and brushing opening, and the lower part of the bedpan is provided with a jet orifice;
the water tank is used for providing flushing water for the washing opening and the jet opening, and is provided with a water outlet which is communicated with the jet opening through a water drainage channel;
a hydraulic drain valve provided at a drain port of the water tank to control opening and closing of the drain port;
the jet pump is arranged in the water tank and can convey water in the water tank to the washing port through a Venturi effect when the jet pump is started;
and a water pump which supplies pressure water to the hydraulic drain valve and the jet pump to open the hydraulic drain valve and the jet pump, respectively.
In a preferred embodiment, the water distribution device further comprises a water distribution pipe, wherein the water distribution pipe is provided with a water inlet, a first water outlet and a second water outlet, the water inlet of the water distribution pipe is communicated with the water outlet of the water pump, the first water outlet is used for supplying water to the hydraulic drain valve, and the second water outlet is used for supplying water to the jet pump.
In a preferred embodiment, the water pump is provided with two water outlets, one of the water outlets of the water pump is used for supplying water to the hydraulic drain valve, and the other water outlet of the water pump is used for supplying water to the jet pump.
In a preferred embodiment, the water inlet of the water pump is communicated with the water tank to pump water in the water tank, or the water inlet of the water pump is communicated with a water source outside the water tank to pump water from the water source outside the water tank.
In a preferred embodiment, the spray pump comprises a nozzle and a spray pipe, the water inlet end of the nozzle is communicated with the water outlet of the water pump, a through-flow gap is arranged between the nozzle and the spray pipe, the through-flow gap is communicated with the inner cavity of the water tank and the inner cavity of the spray pipe, the through-flow sectional area of the water outlet end of the nozzle is smaller than that of the water inlet end of the spray pipe, and when the water outlet end of the nozzle sprays water flow towards the water inlet end of the spray pipe, the water in the water tank is brought into the spray pipe through the through-flow gap under the action of venturi and is sprayed out from the water outlet end of the spray pipe together with the water from the nozzle.
In a preferred embodiment, the spray pump further comprises a water diversion pipe, the water diversion pipe is provided with a water inlet, a first water outlet and a second water outlet, the water inlet of the water diversion pipe is communicated with the water outlet of the water pump, the first water outlet is used for supplying water to the hydraulic drain valve, the second water outlet is used for supplying water to the spray pump, and the second water outlet is used as the nozzle of the spray pump.
In a preferred embodiment, the spray pipe is an elbow pipe, the elbow pipe comprises a transverse pipe section and a vertical pipe section, and the transverse pipe section of the elbow pipe is fixedly installed at the washing opening.
In a preferred embodiment, the washing device further comprises a spray head penetrating through the washing port and a connecting pipe used for fixedly communicating the spray head with the water outlet end of the transverse pipe section, the water inlet end of the spray head extends outwards out of the washing port and is sleeved with the water outlet end of the transverse pipe section in the connecting pipe, and the connecting pipe is abutted against the outer side face and the inner side face of the washing port respectively to be clamped and fixed on the two side faces of the washing port when being fixedly connected with the spray head.
In a preferred embodiment, the spray pipe is an elbow pipe, the elbow pipe comprises a transverse pipe section and a vertical pipe section, and a water pump mounting seat for mounting the water pump is connected to the outer wall of the vertical pipe section of the elbow pipe.
In a preferred embodiment, the hydraulic drain valve comprises a valve body, a valve core movably arranged on the valve body for controlling the opening and closing of the drain outlet, a hydraulic component with a hydraulic cavity, a clutch transmission component and a buoyancy component, the hydraulic cavity is communicated with a water outlet of the water pump, the clutch transmission assembly comprises a first part and a second part which are in clutch fit with each other, after the hydraulic component drives the valve core to move upwards to open the water outlet through the clutch transmission component, the first part and the second part of the clutch transmission component are separated, thereby disconnecting the transmission of the hydraulic assembly to the valve core, which is supported by the buoyancy assembly and held in a position to open the drain port, the valve core resets and closes the water outlet after the buoyancy component falls down along with the water level of the water tank, and the first and second portions of the clutch transmission assembly are drivingly reconnected together.
In a preferred embodiment, the water tank is integrally formed at the rear of the bedpan of the seat body, and the water level in the water tank is lower than the upper surface of the bedpan.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the water tank, the water pump, the hydraulic drain valve and the jet pump are arranged, the hydraulic drain valve is used for controlling the opening of the water outlet so as to convey water in the water tank to the jet orifice to realize jet flushing on the bottom of the toilet bowl, the jet pump is used for conveying water in the water tank to the flushing orifice so as to realize effective flushing on the inner wall of the toilet bowl, and the water pump is used for outputting pressure water to respectively open the hydraulic drain valve and the jet pump, so that the problem of unstable water pressure when tap water is used for flushing the toilet bowl in the prior art can be effectively solved.
2. And a water diversion pipe is adopted, so that two water pumps do not need to be arranged, one water pump is simultaneously used for controlling the opening of a hydraulic drain valve and an injection pump, and the cost of the water pumps is saved.
3. The water pump with the two water outlets is adopted, so that two water pumps do not need to be arranged, one water pump is used for controlling the opening of the hydraulic drain valve and the injection pump, and the cost of the water pump is saved.
4. The second water outlet of the water distribution pipe is directly used as a nozzle of the jet pump, and the structure is simple and compact.
5. The hydraulic drain valve comprises a clutch transmission assembly, so that after the valve core is driven by the hydraulic assembly to open the water outlet, the hydraulic assembly is disconnected from driving the valve core, the valve core is not controlled by the hydraulic assembly any more but is supported by the buoyancy assembly and is kept at the position for opening the water outlet, and after the buoyancy assembly falls down along with the water level of the water tank, the valve core resets and closes the water outlet, so that the water discharge amount of the hydraulic drain valve is more stable and reliable.
Drawings
FIG. 1 is an assembled view of a toilet flushing device according to an embodiment of the present invention;
FIG. 2 is an exploded view of a toilet flushing device according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a toilet flushing device according to an embodiment of the present invention;
FIG. 4 is a top view of a toilet flushing device according to an embodiment of the present invention;
FIG. 5 is a knock out pipe according to an embodiment of the present invention;
FIG. 6 is an elbow according to an embodiment of the invention.
The reference numerals are explained below:
10-a seat body; 11-bedpan; 12-washing and brushing openings; 13-an ejection port;
20-a water tank;
30-a hydraulic drain valve; 31-a valve body; 32-a valve core; 33-a communication hose;
40-a jet pump; 41-a nozzle; 42-a nozzle; 43-through-flow clearance;
50-a water pump;
60-a water distribution pipe; 61-water inlet of water dividing pipe; 62-a first water outlet; 63-a second water outlet;
70-connecting pipe;
80-a water pump mounting seat;
90-spray head.
Detailed Description
The invention is further explained in detail with the accompanying drawings and the embodiments; however, the toilet flushing apparatus with the hydraulic discharge valve of the present invention is not limited to the embodiment.
Referring to fig. 1 to 6, a toilet flushing device with a hydraulic drain valve according to an embodiment of the present invention includes:
a base body 10 having a bedpan 11, wherein the upper part of the bedpan 11 is provided with a washing mouth 12, and the lower part is provided with a jet orifice 13;
a water tank 20 for supplying washing water to the washing ports 12 and the injection ports 13, the water tank 20 having a water discharge port (not shown) communicating with the injection ports 13 through a water discharge passage (not shown);
a hydraulic drain valve 30 provided at a drain port of the tank 20 to control opening and closing of the drain port;
the jet pump 40 is arranged in the water tank 20, and when the jet pump 40 is started, the water in the water tank 20 can be conveyed to the washing and brushing opening 12 through the Venturi effect;
and a water pump 50 supplying pressurized water to the hydraulic drain valve 30 and the jet pump 40 to open the hydraulic drain valve 30 and the jet pump 40, respectively.
In this embodiment, the water distribution pipe 60 is further included, the water distribution pipe 60 has a water inlet 61, a first water outlet 62 and a second water outlet 63, the water inlet 61 of the water distribution pipe 60 is communicated with the water outlet of the water pump 50, the first water outlet 62 is used for supplying water to the hydraulic drain valve 30, and the second water outlet 63 is used for supplying water to the jet pump 40. Alternatively, in other embodiments, the knock out pipe 60 may not be provided, but instead: the water pump 50 is provided with two water outlets, one of the water outlets of the water pump 50 is used for supplying water to the hydraulic drain valve 30, and the other water outlet of the water pump 50 is used for supplying water to the jet pump 40. The first water outlet 62 communicates with a hydraulic chamber (not shown) of the hydraulic drain valve 30 through the communication hose 33.
In this embodiment, the water inlet of the water pump 50 is communicated with the water tank 20 to pump the water in the water tank 20, and the water pump 50 is installed in the water tank 20 in this embodiment, but may be installed outside the water tank 20; alternatively, in other embodiments, the water inlet of the water pump 50 may be in communication with a water source external to the water tank 20 to draw water from the water source external to the water tank 20.
In this embodiment, the jet pump 40 comprises a nozzle 41 and a nozzle tube 42, the water inlet end of the nozzle 41 is communicated with the water outlet of the water pump 50, a through-flow gap 43 communicating the cavity of the water tank 20 and the cavity of the nozzle tube 42 is arranged between the nozzle 41 and the nozzle tube 42, the through-flow cross-sectional area of the water outlet end of the nozzle 41 is smaller than that of the water inlet end of the nozzle tube 42, and when the water outlet end of the nozzle 41 jets water flow against the water inlet end of the nozzle tube 42, the water in the water tank 20 is brought into the nozzle tube 42 through the through-flow gap 43 under the action of venturi and is jetted out from the water outlet end of the nozzle tube 42 together with the water from the nozzle 41.
In this embodiment, in order to make the structure simpler and more compact, the second water outlet 63 of the water diversion pipe 60 is directly used as the nozzle 41 of the jet pump 40.
In this embodiment, the nozzle 42 is an elbow including a horizontal pipe section and a vertical pipe section, and the horizontal pipe section of the elbow is fixedly installed at the washing opening 12.
In this embodiment, the device further comprises a nozzle 90 penetrating the brushing port 12 and a connecting pipe 70 for fixedly connecting the nozzle 90 and the water outlet end of the transverse pipe section, the water inlet end of the nozzle 90 extends outwards from the brushing port 12 and is sleeved with the water outlet end of the transverse pipe section in the connecting pipe 70, and the connecting pipe 70 is respectively abutted against the outer side surface and the inner side surface of the brushing port 12 when being fixedly connected with the nozzle so as to be clamped and fixed on the two side surfaces of the brushing port 12.
In this embodiment, a water pump mounting seat 80 for mounting the water pump 50 is connected to the outer wall of the vertical pipe section of the elbow pipe. The water pump mounting seat 80 may be separately formed with the nozzle 42 and then fixedly connected thereto, or the two may be directly and integrally formed, and the latter connection mode is adopted in this embodiment.
In this embodiment, the hydraulic drain valve 30 adopts the existing structure having the clutch function, and the structure is roughly: the hydraulic drain valve 30 includes a valve body 31, a valve core 32 movably disposed on the valve body 31 for controlling opening and closing of the drain opening, a hydraulic assembly (not shown) having a hydraulic chamber, a clutch transmission assembly (not shown) and a buoyancy assembly (not shown), the hydraulic chamber is communicated with the water outlet of the water pump 50, the clutch transmission assembly includes a first part (not shown) and a second part (not shown) which are in clutch fit, after the hydraulic assembly drives the valve core 32 to move upwards to open the drain opening through the clutch transmission assembly, the first part and the second part of the clutch transmission assembly are disengaged, thereby disconnecting the transmission of the hydraulic assembly to the valve spool 32, the valve spool 32 being supported by the buoyancy assembly and held in a position to open the drain port, the buoyancy assembly lagging behind the water level of the tank 20, the valve spool 32 is reset and closes the drain port and the first and second portions of the clutch transmission assembly are re-driveably connected together.
In this embodiment, the water tank 20 is integrally formed behind the toilet bowl 11 of the seat body 10, and the water level in the water tank 20 is lower than the upper surface of the toilet bowl 11. The water discharged from the washing port 12 is used to wash the inner peripheral wall of the toilet bowl 11, and the injection port 13 is used to spray water toward the inlet of a sewage pipe (not shown) of the base body 10.
Compared with the prior art, the invention has the advantages that the water tank, the water pump, the hydraulic drain valve and the jet pump are arranged, the hydraulic drain valve is used for controlling the opening of the drain port to convey water of the water tank to the jet port so as to realize jet flushing of the bottom of the toilet bowl, the jet pump is used for conveying water of the water tank to the flushing port so as to realize effective flushing of the inner wall of the toilet bowl, and the hydraulic drain valve and the jet pump are respectively opened by utilizing water output pressure of the water pump, so that the problem of unstable water pressure when tap water is used for flushing the toilet bowl in the prior art can be effectively solved.
The above embodiments are only for further illustrating the toilet flushing device with hydraulic drain valve of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.

Claims (11)

1. A toilet flushing device with a hydraulic drain valve, comprising:
the base body is provided with a bedpan, the upper part of the bedpan is provided with a washing and brushing opening, and the lower part of the bedpan is provided with a jet orifice;
the water tank is used for providing flushing water for the washing opening and the jet opening, and is provided with a water outlet which is communicated with the jet opening through a water drainage channel;
a hydraulic drain valve provided at a drain port of the water tank to control opening and closing of the drain port;
the jet pump is arranged in the water tank and can convey water in the water tank to the washing port through a Venturi effect when the jet pump is started;
and the water pump is used for providing pressure water to the hydraulic drain valve and the injection pump so as to respectively open the hydraulic drain valve and the injection pump.
2. The toilet flushing device according to claim 1, further comprising a water diversion pipe having a water inlet, a first water outlet and a second water outlet, the water inlet of the water diversion pipe being in communication with the water outlet of the water pump, the first water outlet being for supplying water to the hydraulic drain valve, the second water outlet being for supplying water to the jet pump.
3. The toilet flushing device according to claim 1, wherein the water pump is provided with two water outlets, one of the water outlets of the water pump being used for supplying water to the hydraulic drain valve and the other water outlet of the water pump being used for supplying water to the jet pump.
4. The toilet flushing device according to claim 1, wherein the water inlet of the water pump is in communication with the water tank to pump water from within the water tank or the water inlet of the water pump is in communication with a water source external to the water tank to pump water from a water source external to the water tank.
5. The toilet flushing device according to claim 1, wherein the jet pump comprises a nozzle and a nozzle tube, a water inlet end of the nozzle is communicated with a water outlet of the water pump, a through-flow gap is formed between the nozzle and the nozzle tube for communicating the water tank cavity and the nozzle tube cavity, a through-flow cross-sectional area of a water outlet end of the nozzle is smaller than that of the water inlet end of the nozzle tube, and when the water outlet end of the nozzle sprays water flow against the water inlet end of the nozzle tube, water in the water tank is brought into the nozzle tube through the through-flow gap under the action of venturi and is sprayed out of the water outlet end of the nozzle tube together with water from the nozzle.
6. The toilet flushing device according to claim 5, further comprising a water diversion pipe having a water inlet, a first water outlet and a second water outlet, the water inlet of the water diversion pipe being in communication with the water outlet of the water pump, the first water outlet being for supplying water to the hydraulic drain valve, the second water outlet being for supplying water to the jet pump, the second water outlet being the nozzle of the jet pump.
7. The toilet flushing device according to claim 5, wherein the nozzle is an elbow, the elbow including a transverse section and a vertical section, the transverse section of the elbow being fixedly mounted at the flushing opening.
8. The toilet flushing device according to claim 7, further comprising a nozzle penetrating the flushing port and a connecting pipe for fixedly connecting the nozzle and the water outlet end of the transverse pipe section, wherein the water inlet end of the nozzle extends outward from the flushing port and is sleeved with the water outlet end of the transverse pipe section in the connecting pipe, and the connecting pipe is respectively abutted against the outer side surface and the inner side surface of the flushing port to be clamped and fixed on the two side surfaces of the flushing port when being fixedly connected with the nozzle.
9. The toilet flushing device according to claim 5, wherein the nozzle is an elbow, the elbow comprises a horizontal pipe section and a vertical pipe section, and a water pump mounting seat for mounting the water pump is connected to the outer wall of the vertical pipe section of the elbow.
10. The toilet flushing device according to claim 1, wherein the hydraulic drain valve includes a valve body, a valve core movably disposed in the valve body to control the opening and closing of the drain port, a hydraulic assembly having a hydraulic chamber, a clutch transmission assembly and a buoyancy assembly, the hydraulic chamber is communicated with the water outlet of the water pump, the clutch transmission assembly includes a first portion and a second portion which are in clutch engagement, the hydraulic assembly drives the valve core to move upward through the clutch transmission assembly to open the drain port, the first portion and the second portion of the clutch transmission assembly are disengaged to disconnect the transmission of the hydraulic assembly to the valve core, the valve core is supported by the buoyancy assembly and is held at a position for opening the drain port, the buoyancy assembly follows the water level of the water tank, the valve core resets and closes the drain port, and the first and second portions of the clutch transmission assembly are drivingly reconnected together.
11. A toilet flushing device as claimed in any one of claims 1 to 10, wherein the water tank is integrally formed in the housing behind the bowl, the level of water in the water tank being below the upper surface of the bowl.
CN202210370524.4A 2022-04-10 2022-04-10 Toilet flushing device with hydraulic drain valve Pending CN114658076A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210370524.4A CN114658076A (en) 2022-04-10 2022-04-10 Toilet flushing device with hydraulic drain valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210370524.4A CN114658076A (en) 2022-04-10 2022-04-10 Toilet flushing device with hydraulic drain valve

Publications (1)

Publication Number Publication Date
CN114658076A true CN114658076A (en) 2022-06-24

Family

ID=82035024

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210370524.4A Pending CN114658076A (en) 2022-04-10 2022-04-10 Toilet flushing device with hydraulic drain valve

Country Status (1)

Country Link
CN (1) CN114658076A (en)

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