CN114232743B - Low water tank squatting pan that supplementary scour of negative pressure - Google Patents
Low water tank squatting pan that supplementary scour of negative pressure Download PDFInfo
- Publication number
- CN114232743B CN114232743B CN202111578739.7A CN202111578739A CN114232743B CN 114232743 B CN114232743 B CN 114232743B CN 202111578739 A CN202111578739 A CN 202111578739A CN 114232743 B CN114232743 B CN 114232743B
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- water
- negative pressure
- tank
- water supply
- cavity
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 368
- 238000011010 flushing procedure Methods 0.000 claims abstract description 28
- 239000010865 sewage Substances 0.000 claims abstract description 23
- 239000008400 supply water Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 5
- 230000001502 supplementing effect Effects 0.000 description 8
- 238000007789 sealing Methods 0.000 description 4
- 239000013589 supplement Substances 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
Classifications
-
- 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
- E03D3/00—Flushing devices operated by pressure of the water supply system flushing valves not connected to the water-supply main, also if air is blown in the water seal for a quick flushing
- E03D3/10—Flushing devices with pressure-operated reservoir, e.g. air chamber
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sanitary Device For Flush Toilet (AREA)
Abstract
The invention discloses a low water tank toilet with negative pressure assisted flushing, which comprises the following components: the toilet body is provided with a urinal and a sewage drain channel, a first water trap and a second water trap are arranged on the sewage drain channel, and a first cavity is formed in a space between the two water traps on the sewage drain channel; the water tank is positioned behind the urinal; the negative pressure cover is a cover body, the bottom end opening of the cover body is communicated with the inner cavity of the water tank, the top wall of the cover body is positioned above the working water level of the water tank, and a sealed second cavity is formed between the top wall of the cover body and the water surface of the water tank; the first end of the gas passing pipe is communicated with the first cavity, and the second end of the gas passing pipe is communicated with the second cavity; the water supply structure comprises a water supply channel, and the water supply channel supplies water to the gas passing pipe after the urinal flushing is finished so as to clean the gas passing pipe. The invention can effectively improve the flushing performance of the low-water tank toilet, has simple structure, low cost, sanitation and reliable functions.
Description
Technical Field
The invention relates to the technical field of sanitary ware, in particular to a low-water tank toilet bowl with negative pressure assisted flushing.
Background
Low tank toilets (e.g., pure flush toilets in the market, with the top surface of the tank not higher than the top surface of the bowl or the top surface of the tank only slightly higher than the top surface of the bowl) are more attractive and concise in appearance and shape, and are therefore becoming increasingly popular with consumers. However, because the water tank is low in position, the toilet bowl is effectively flushed only by the insufficient gravitational potential energy of water, the existing low-water-tank toilets adopt the water pressure of tap water to assist flushing, and the low-water-tank toilets adopt a water pump to pump water of a water tank to assist flushing and the like. When the auxiliary flushing of tap water is adopted, an electromagnetic valve is usually required to control the opening and closing of tap water, at least the cost of the electromagnetic valve is increased, and when the auxiliary flushing of a water pump is adopted, the cost of a product is greatly increased no matter the auxiliary flushing of tap water or the auxiliary flushing of the water pump is adopted, and the structure is also complex.
Disclosure of Invention
In view of the above, the invention aims to provide a low water tank toilet with negative pressure assisted flushing, which can effectively improve the flushing performance of the low water tank toilet, and has the advantages of simple structure, low cost, good sanitation and reliable function.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a low tank toilet for negative pressure assisted flushing, comprising:
the toilet body is provided with a toilet and a sewage drain channel communicated with the bottom of the toilet, a first water trap is formed at the inlet of the sewage drain channel to form a first water seal, a second water trap positioned at the downstream of the first water trap is further arranged on the sewage drain channel to form a second water seal, and a first water seal cavity is formed in a space positioned between the first water trap and the second water trap on the sewage drain channel;
the water tank is positioned behind the urinal;
the negative pressure cover is a cover body with an opening at the bottom end arranged in the water tank, the opening at the bottom end of the cover body is communicated with the inner cavity of the water tank, the top wall of the cover body is positioned above the working water level of the water tank, and a sealed second cavity is formed between the top wall of the cover body and the water surface of the water tank;
a gas passing tube having a first end in communication with the first cavity and a second end in communication with the second cavity;
the water supply structure comprises a water supply channel, and the water supply channel supplies water to the gas passing pipe after the urinal flushing is finished so as to clean the gas passing pipe.
In a preferred embodiment, the top wall of the negative pressure cover is provided with a water passing hole, the water passing hole forms an outlet of the water feeding channel, the water passing hole is positioned above the top opening of the air passing pipe and corresponds to the top opening of the air passing pipe, the water feeding structure further comprises a one-way valve arranged on the water feeding channel, the one-way valve controls the water passing hole to be opened and closed, when the water feeding channel is filled with water, the water pressure of the water feeding channel drives the one-way valve to open the water passing hole, and when the water feeding channel is filled with water, the one-way valve automatically closes the water passing hole; or when water in the negative pressure cover flows out of the negative pressure cover to generate negative pressure in the negative pressure cover, the negative pressure drives the one-way valve to close the water passing hole.
In a preferred embodiment, the one-way valve comprises a valve core matched with the water passing hole, and the valve core moves upwards under the action of water pressure of the water feeding channel and automatically falls under the action of self gravity to close the water passing hole when the water feeding channel stops water.
In a preferred embodiment, the one-way valve comprises a valve core matched with the water passing hole and an elastic piece for driving the valve core to reset, when the water feeding channel is fed with water, the water pressure drives the valve core to overcome the elastic force of the elastic piece so as to open the water passing hole, and when the water feeding channel is stopped with water, the valve core automatically closes the water passing hole under the action of the elastic force of the elastic piece.
The water supply channel is provided with a valve cavity, the valve core can be arranged in the valve cavity in a reciprocating sliding manner and divides the valve cavity into a first cavity and a second cavity in a sealing manner, the first cavity forms a part of the water supply channel, the water passing hole is positioned on the first cavity, the second cavity is communicated with the outside air, and the elastic piece is arranged in the second cavity.
In a preferred embodiment, the water supply channel is arranged in a penetrating way through the negative pressure cover in a sealing way, and the outlet of the water supply channel is positioned above the top opening of the gas passing pipe and corresponds to the position of the top opening of the gas passing pipe; alternatively, the outlet of the water supply passage is inserted into the gas passing pipe.
In a preferred embodiment, the water tank further comprises a water inlet valve for supplying water to the water tank, the water inlet valve is communicated with the water supply channel to supply water to the water supply channel, and the water inlet valve is opened to supply water to the water tank to supply water to the water supply channel.
In a preferred embodiment, the flow of water flowing into the first chamber from the gas pipe flows to the second trapway.
In a preferred embodiment, the water flow from the gas pipe into the first chamber also flows to the first trapway.
In a preferred embodiment, the toilet body, the water tank and the air pipe are integrally formed or respectively and independently formed.
In a preferred embodiment, a portion of the top wall of the trapway forms a portion of the bottom wall of the tank.
In a preferred embodiment, the first end of the air duct communicates with a portion of the top wall of the trapway forming part of the bottom wall of the tank, the air duct being located entirely within the tank.
In a preferred embodiment, the negative pressure cover is formed separately from the water tank, or the negative pressure cover is formed integrally with the water tank.
In a preferred embodiment, the first trapway has a liquid level below the bottom wall of the tank or, alternatively, the first trapway has a liquid level with the bottom wall of the tank.
In a preferred embodiment, the top surface of the tank is no higher than the top surface of the bowl.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the first water trap and the second water trap are arranged on the sewage disposal channel, the space between the first water trap and the second water trap on the sewage disposal channel forms a first water-sealed cavity, the negative pressure cover is arranged in the water tank to form a second sealed cavity between the top wall of the cover body and the water surface of the water tank, and the first cavity and the second cavity are communicated by the air pipe, so that in the process of draining water in the water tank to flush the urinal, the second cavity can form negative pressure, and the negative pressure is conducted to the first cavity by the air pipe, so that the sewage disposal channel can form siphonage as soon as possible, the siphonage strength is high, and the flushing performance of the toilet with the low water tank can be effectively improved. The invention has simple structure, low cost and reliable function.
According to the invention, the water supply structure is arranged, and the water supply channel of the water supply structure supplies water to the air passing pipe to clean the air passing pipe after the flushing of the urinal is finished, so that the air passing pipe can be kept clean, the problem that the air passing pipe is polluted due to the fact that sewage in the first cavity flows back to the air passing pipe under the condition that the negative pressure generated by the negative pressure cover is large is effectively avoided, and the product sanitation is better.
The invention adopts the one-way valve to control the opening and closing of the outlet (namely the water passing hole) of the water supply channel, so that the water passing hole can be opened to supply water to the air passing pipe when the water supply channel is in water supply, and the water passing hole can be automatically closed when the water supply channel is in water stop, or the water passing hole can be closed under the negative pressure effect of the negative pressure cover, thereby not affecting the function of the negative pressure cover and ensuring that the negative pressure cover can form enough negative pressure.
The invention can also directly adopt the structure that the water supply channel is sealed and penetrated in the negative pressure cover without arranging a one-way valve, and the structure is simpler.
According to the invention, the water flowing into the first cavity from the air pipe flows to the second water trap, so that the second water trap can be effectively supplemented with water, and the problem that the negative pressure auxiliary flushing function is invalid because the first cavity cannot form a closed cavity when the water in the second water trap is insufficient is effectively avoided.
The water flow flowing into the first cavity through the air pipe flows to the first water trap, so that the first water trap can be effectively supplemented with water, and the problem that the negative pressure auxiliary flushing function is invalid because the first cavity cannot form a closed cavity when the water in the first water trap is insufficient is effectively avoided. In addition, because the air pipe can supplement water for the first water trap, other water supplementing structures (such as a water inlet valve independently leading out a water supplementing waterway and supplementing water for the urinal through an overflow channel of the water tank) are not needed, and other water supplementing structures can be omitted.
The whole gas passing pipe is arranged in the water tank, so that the problem of water leakage at the gas passing pipe can be effectively prevented.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is an exploded perspective view of a low tank toilet according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view showing a low tank toilet in an initial state according to an embodiment of the present invention;
FIG. 3 shows an enlarged view at A in FIG. 2;
FIG. 4 is a cross-sectional view showing a low tank bowl in a water supply passage for supplying water according to an embodiment of the present invention;
FIG. 5 shows an enlarged view at B in FIG. 4;
FIG. 6 is a cross-sectional view showing the cooperation of the negative pressure cover and the water supply structure of the low tank toilet according to an embodiment of the present invention;
fig. 7 is an exploded perspective view showing a negative pressure cover and a water supply structure of a low tank toilet according to an embodiment of the present invention.
The reference numerals are:
1-a toilet body; 11-a urinal; 111-top surface of urinal; 12-a sewage disposal channel; 13-a first trapway; 14-a second trapway; 15-a first cavity;
2-a water tank; 21-top surface of the water tank;
3-a negative pressure cover; 31-a second cavity; 32-water passing holes;
4-passing the air pipe; 41-the top end opening of the gas passing pipe;
5-a water supply structure; 51-a water feed passage; 511-valve cavity; 5111-first lumen; 5112-a second lumen; 52-a one-way valve; 521-valve core; 522-elastic member.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear and obvious, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 7, a low tank toilet with negative pressure assisted flushing according to an embodiment of the present invention includes:
the toilet body 1 is provided with a urinal 11 and a sewage drain channel 12 communicated with the bottom of the urinal 11, a first water trap 13 is formed at the inlet of the sewage drain channel 12 to form a first water seal, a second water trap 14 positioned at the downstream of the first water trap 13 is further arranged on the sewage drain channel 12 to form a second water seal, and a first cavity 15 which is water-sealed (water sealing is realized through the first water seal and the second water seal) is formed in a space positioned between the first water trap 13 and the second water trap 14 on the sewage drain channel 12;
a water tank 2 positioned behind the urinal 11;
the negative pressure cover 3 is a cover body arranged in the water tank 2 and provided with an opening at the bottom end, the opening at the bottom end of the cover body is communicated with the inner cavity of the water tank 2, the top wall of the cover body is positioned above the working water level of the water tank 2, and a sealed second cavity 31 is formed between the top wall of the cover body and the water surface of the water tank 2;
a gas passing tube 4 having a first end and a second end, the first end being in communication with the first cavity 15 and the second end being in communication with the second cavity 31;
the water supply structure 5 includes a water supply passage 51, and the water supply passage 51 supplies water to the air pipe 4 to clean the air pipe 4 after the flushing of the urinal 11 is completed.
By arranging the water supply structure 5, the water supply channel 51 of the water supply structure 5 supplies water to the air pipe 4 after the flushing of the urinal 11 is finished so as to clean the air pipe, so that the air pipe 4 can be kept clean, and the problem that the air pipe 4 is polluted due to the fact that sewage in the first cavity 15 flows back into the air pipe 4 under the condition that the negative pressure generated by the negative pressure cover 3 is large is effectively avoided, and the product sanitation is better.
In this embodiment, the top wall of the negative pressure cover 3 is provided with a water passing hole 32, the water passing hole 32 forms an outlet of the water feeding channel 51, and the water passing hole 32 is located above the top end opening 41 of the air passing pipe and corresponds to the top end opening 41 of the air passing pipe. The water supply structure 5 further comprises a one-way valve 52 arranged on the water supply channel 51, and the one-way valve 52 controls the opening and closing of the water passing holes 32. As shown in fig. 4 and 5, when the water supply passage 51 is fed, the water pressure of the water supply passage 51 drives the check valve 52 to open the water passing hole 32; as shown in fig. 2 and 3, when the water supply passage 51 is stopped, the check valve 52 automatically closes the water passing hole 32.
Specifically, in the present embodiment, the check valve 52 includes a valve core 521 that cooperates with the water passing hole 32 and an elastic member 522 for driving the valve core 521 to return, when the water feeding channel 51 is fed with water, the water pressure drives the valve core 521 to overcome the elastic force of the elastic member 522 so as to open the water passing hole 32, and when the water feeding channel 51 is stopped with water, the valve core 521 automatically closes the water passing hole 32 under the elastic force of the elastic member 522. The elastic member 522 is specifically a compression spring, but may be any other elastic member.
In this embodiment, the water supply passage 51 is provided with a valve cavity 511, the valve core 521 is slidably disposed in the valve cavity 511 in a reciprocating manner and divides the valve cavity 511 into a first cavity 5111 and a second cavity 5112 in a sealing manner, the first cavity 5111 forms a part of the water supply passage 51, the water supply hole 32 is disposed on the first cavity 5111, the second cavity 5112 is in communication with the outside air, and the elastic member 522 is disposed in the second cavity 5112.
In this embodiment, a water inlet valve (not shown) for supplying water to the water tank is further included, the water inlet valve is communicated with the water supply channel 51 to supply water to the water supply channel 51, and when the water inlet valve is opened to supply water to the water tank, the water supply channel 51 is also supplied with water.
In this embodiment, as shown in fig. 4, the water flowing into the first cavity 5111 from the air pipe 4 flows to the second trap 14, so that the second trap 14 can be effectively replenished with water, and the problem that the negative pressure auxiliary flushing function is disabled due to the fact that the first cavity 15 cannot form a closed cavity when the water in the second trap 14 is insufficient is effectively avoided, and the function is more reliable. Arrows in fig. 4 represent the water flow path of the water flow of the water feed channel 51 to the second trapway 14.
In this embodiment, the toilet body 1, the water tank 2 and the air pipe 4 are integrally formed. Of course, in other embodiments, the toilet body 1, the water tank 2 and the air pipe 4 may be formed separately, for example, the air pipe 4 may be a hose.
In this embodiment, a portion of the top wall of the trapway 12 forms a portion of the bottom wall of the tank 2. Specifically, the first end of the air pipe 4 is communicated with a part of the top wall of the sewage drain channel 12 forming a part of the bottom wall of the water tank 2, and the air pipe 4 is integrally positioned in the water tank 2, so that the problem of water leakage at the air pipe can be effectively prevented.
In this embodiment, the negative pressure cover 3 is formed separately from the water tank 2. Alternatively, in other embodiments, the negative pressure cover 3 may be integrally formed with the water tank 2.
In this embodiment, the liquid level of the first trapway 13 is level with the bottom wall of the tank 2. In other embodiments, the first trapway 13 may have a liquid level below the bottom wall of the tank 2.
In this embodiment, the top surface 21 of the tank 2 is not higher than the top surface 111 of the urinal 11, specifically, the top surface 21 of the tank 2 is flush with the top surface 111 of the urinal 11.
The working principle of the embodiment is as follows:
referring to fig. 2 and 3, at this time, the low tank toilet is in an initial state, the water level in the tank 2 is at a working water level, the water in the first trap 13 forms a first water seal, the water in the second trap 14 forms a second water seal, and the first cavity 15 is a sealed cavity due to the first water seal and the second water seal. The valve core 521 of the check valve 52 closes the water passing hole 32 under the elastic force of the elastic member 522, so that the second chamber 31 is also a sealed chamber.
When the water tank 2 drains, the water level in the water tank 2 drops, and water in the negative pressure cover 3 is discharged into the water tank 2 through the bottom end opening of the negative pressure cover 3, and then the water tank 2 is discharged, and in the process of the water level drop of the negative pressure cover 3, the second cavity 31 can form negative pressure, and the negative pressure is conducted to the first cavity 15 through the air passing pipe 4, so that the sewage draining channel 13 can form siphonage as soon as possible, and the siphonage strength is high, and further the flushing performance of the low water tank toilet can be effectively improved. The check valve 52 always keeps closing the water passing hole 32 during the draining of the water tank 2, thereby ensuring the stability of the negative pressure formed in the negative pressure cover 3.
Referring to fig. 4 and 5, when the water inlet valve starts to feed water into the water tank 2, water in the water tank 2 enters the negative pressure cover 3 through the bottom end opening of the negative pressure cover 3, and as the water level in the water tank 2 rises continuously, the water level in the negative pressure cover 3 rises continuously, and the water presses air in the negative pressure cover 3 to be discharged from the air pipe 4 into the first cavity 15, and then is discharged through the first water trap 13 or the second water trap 14. At the same time, the water inlet valve supplies water to the water supply channel 51 at the same time, the water flow pressure of the water supply channel 51 drives the valve core 521 of the one-way valve 52 to move upwards and open the water flow hole 32, the water flow further flows from the water flow hole 32 to the water flow pipe 4, and the water flow of the water flow pipe 4 further flows to the second water trap 14 to supplement water for the second water trap 14, so that the water storage height of the second water trap 14 is ensured to be enough to form a second water seal. When the water inlet valve stops water inlet, the water supply passage 51 is stopped, and the valve core 521 of the check valve 52 automatically closes the water passing hole 32 under the elastic force of the elastic member 522, thereby returning to the initial state shown in fig. 2 and 3.
In other embodiments, it may also be configured to: the water flow of the first chamber 5111 body of air pipe 4 inflow still flows to first trap 13 to can carry out effective moisturizing to first trap 13, effectively avoid when the water in the first trap 13 is not enough, first chamber 15 can't form confined cavity, and lead to the problem that the auxiliary flushing function of negative pressure became invalid. In addition, since the air pipe 4 is already capable of supplementing water to the first trap 13, no other water supplementing structure (for example, a water inlet valve independently leads out a water supplementing waterway and supplements water to the urinal through an overflow channel of the water tank, etc.) is needed to supplement water to the first trap 13, and other water supplementing structures can be omitted.
In other embodiments, the valve core 521 of the check valve 52 may be replaced by the valve core 521 automatically closing the water passing hole 32 under the action of the elastic force of the elastic member 522, and specifically: the check valve 52 includes a valve core 521 engaged with the water passing hole 32, without including an elastic member 522, and the valve core 521 moves upward under the water pressure of the water passage 51 and automatically drops under the self gravity to close the water passing hole 32 when the water passage 51 is stopped. So that the elastic member 522 can be omitted.
In other embodiments, the check valve 52 may be automatically reset to close the water passing hole 32 under the action of the negative pressure formed in the negative pressure cover 3 instead of the action of elastic force or self gravity, specifically: when water in the negative pressure cover 3 flows out of the negative pressure cover 3 to generate negative pressure in the negative pressure cover 3, the negative pressure drives the one-way valve 52 to close the water passing hole 32.
In other embodiments, it may also be configured to: the water supply channel 51 is hermetically penetrated through the negative pressure cover 3, and the outlet of the water supply channel 51 is positioned above the top end opening 41 of the gas passing pipe and corresponds to the position of the top end opening 41 of the gas passing pipe; alternatively, the outlet of the water feed passage 51 is inserted into the gas passing pipe 4. This also allows the water supply passage 51 to supply water to the gas pipe 4, and the structure is simpler because the check valve 52 is omitted.
While the foregoing description illustrates and describes the preferred embodiments of the present invention, as noted above, it is to be understood that the invention is not limited to the forms disclosed herein but is not to be construed as excluding other embodiments, and that various other combinations, modifications and environments are possible and may be made within the scope of the inventive concepts described herein, either by way of the foregoing teachings or by those of skill or knowledge of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (13)
1. A low tank toilet for negative pressure assisted flushing comprising:
the toilet body is provided with a toilet and a sewage drain channel communicated with the bottom of the toilet, a first water trap is formed at the inlet of the sewage drain channel to form a first water seal, a second water trap positioned at the downstream of the first water trap is further arranged on the sewage drain channel to form a second water seal, and a first water seal cavity is formed in a space positioned between the first water trap and the second water trap on the sewage drain channel;
the water tank is positioned behind the urinal;
the negative pressure cover is a cover body with an opening at the bottom end arranged in the water tank, the opening at the bottom end of the cover body is communicated with the inner cavity of the water tank, the top wall of the cover body is positioned above the working water level of the water tank, and a sealed second cavity is formed between the top wall of the cover body and the water surface of the water tank;
a gas passing tube having a first end in communication with the first cavity and a second end in communication with the second cavity;
the water supply structure comprises a water supply channel, and the water supply channel supplies water to the gas passing pipe after the urinal flushing is finished so as to clean the gas passing pipe; the water supply channel is hermetically penetrated through the negative pressure cover, and the outlet of the water supply channel is positioned above the top end opening of the gas passing pipe and corresponds to the top end opening of the gas passing pipe; alternatively, the outlet of the water supply channel is inserted into the gas passing pipe;
the water inlet valve is used for supplying water to the water tank, the water inlet valve is communicated with the water supply channel to supply water to the water supply channel, and the water inlet valve is opened to supply water to the water tank to supply water to the water supply channel.
2. The negative pressure assisted flushing low water tank toilet according to claim 1, wherein a water passing hole is formed in the top wall of the negative pressure cover, the water passing hole forms an outlet of the water supply channel, the water passing hole is located above the top end opening of the water passing pipe and corresponds to the top end opening of the water passing pipe, the water supply structure further comprises a one-way valve arranged on the water supply channel, the one-way valve controls the water passing hole to be opened and closed, when the water supply channel is filled with water, the water pressure of the water supply channel drives the one-way valve to open the water passing hole, and when the water supply channel is filled with water, the one-way valve automatically closes the water passing hole; or when water in the negative pressure cover flows out of the negative pressure cover to generate negative pressure in the negative pressure cover, the negative pressure drives the one-way valve to close the water passing hole.
3. The negative pressure assisted flush low tank bowl of claim 2 wherein the one-way valve includes a valve element that mates with the water passage, the valve element moving upward under the water pressure of the water supply passage and automatically falling under its own weight to close the water passage when the water supply passage is stopped.
4. The negative pressure assisted flushing low tank toilet of claim 2, wherein the one-way valve comprises a valve core matched with the water passing hole and an elastic piece for driving the valve core to reset, when the water feeding channel is filled with water, the water pressure drives the valve core to overcome the elastic force of the elastic piece so as to open the water passing hole, and when the water feeding channel is stopped, the valve core automatically closes the water passing hole under the elastic force of the elastic piece.
5. The negative pressure assisted flush low tank bowl of claim 4 wherein the water supply passage has a valve chamber, the valve cartridge being reciprocally slidably disposed within the valve chamber and sealingly dividing the valve chamber into a first chamber and a second chamber, the first chamber forming a portion of the water supply passage, the water passing aperture being disposed in the first chamber, the second chamber being in communication with the ambient atmosphere, the resilient member being disposed in the second chamber.
6. The negative pressure assisted flush low tank bowl of claim 1 wherein the flow of water from the gas pipe into the first chamber flows to the second trapway.
7. The negative pressure assisted flush low tank bowl of claim 1 wherein the flow of water from the gas pipe into the first chamber also flows to the first trapway.
8. The negative pressure assisted flush low tank bowl of claim 1, wherein the bowl body, the tank and the gas pipe are integrally formed or separately formed.
9. The negative pressure assisted flush low tank bowl of claim 8, wherein a portion of the top wall of the trapway forms a portion of the bottom wall of the tank.
10. The negative pressure assisted flush low tank bowl of claim 8 wherein the first end of the air passage communicates with a portion of the top wall of the trapway forming a portion of the bottom wall of the tank, the air passage being located entirely within the tank.
11. The negative pressure assisted flush low tank bowl of claim 1, wherein the negative pressure shield is formed separately from the tank or is formed integrally with the tank.
12. The negative pressure assisted flush low tank bowl of any one of claims 1 to 11, wherein the first trapway has a liquid level below the bottom wall of the tank or is flush with the bottom wall of the tank.
13. The negative pressure assisted flush low tank bowl of any one of claims 1 to 11, wherein a top surface of the tank is no higher than a top surface of the bowl.
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| CN216664366U (en) * | 2021-12-22 | 2022-06-03 | 谷力(厦门)科技有限公司 | Low-water-tank toilet stool with negative-pressure auxiliary flushing function |
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| EP0591558A1 (en) * | 1992-04-21 | 1994-04-13 | FLUIDMASTER, Inc. | Enhanced operation toilet |
| JPH0754388A (en) * | 1993-08-12 | 1995-02-28 | Toto Ltd | Flush toilet bowl |
| JP2007046307A (en) * | 2005-08-09 | 2007-02-22 | Inax Corp | Toilet bowl flushing apparatus |
| CN200982017Y (en) * | 2006-10-27 | 2007-11-28 | 菲利普·亨尼西 | Water-saving type toilet with pressurized air pipe |
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| CN204475458U (en) * | 2015-02-13 | 2015-07-15 | 陈锐宏 | A kind of water saving conjoined toilet |
| CN106049633A (en) * | 2016-05-11 | 2016-10-26 | 厦门市极洁卫浴有限公司 | Odor removal water seal device of pedestal pan |
| CN216664366U (en) * | 2021-12-22 | 2022-06-03 | 谷力(厦门)科技有限公司 | Low-water-tank toilet stool with negative-pressure auxiliary flushing function |
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| CN114232743A (en) | 2022-03-25 |
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