CN108842878B

CN108842878B - Vacuum-assisted flush toilet

Info

Publication number: CN108842878B
Application number: CN201810816666.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Fan Huifei
Current assignee: Guangdong Difulong Kitchen and Bathroom Technology Co.,Ltd.
Priority date: 2014-04-11
Filing date: 2014-04-11
Publication date: 2020-04-21
Anticipated expiration: 2034-04-11
Also published as: CN108842878A; CN103882925B; CN108842879B; CN103882925A; CN108842879A

Abstract

The invention discloses a vacuum-assisted toilet with a delayed air exhaust closing system. The toilet of the present invention comprises a toilet base, a water tank for supplying water into said toilet base at the beginning of flushing, a flushing pipe for carrying water downstream to a sewer, a vacuum source applied to a curved passage during toilet flushing, and a delayed suction shut-off system connected to said curved passage for controlling the circulation of the vacuum source passage on and off. The improvement is that: the delayed air exhaust closing system is in an open state at the initial stage of flushing the closestool so as to ensure the suction force of a vacuum source on a curved channel, and is in a closed state at the later stage of flushing the closestool so as to prevent dirt from entering a water tank and prevent the dirt from entering a water supply system due to the siphon effect failure of a water inlet valve. The flush toilet with the structure can effectively realize water conservation, prevent water pollution caused by sewage entering a water supply system and prevent insufficient water seal caused by over-suction.

Description

Vacuum-assisted flush toilet

Technical Field

The invention relates to a flush toilet, in particular to a vacuum-assisted flush toilet with a delayed air exhaust closing system.

Background

The vacuum-assisted toilet bowl can increase the pressure difference required during siphoning, use less water to achieve a better flushing effect, cannot generate extra noise and is always researched and developed by professionals. However, in the toilet using vacuum assistance to generate larger siphons, as a vacuum is required to be applied to the sewage discharge bend of the toilet base during the flushing process, contaminants can enter the water tank through the vacuum channel and further enter the water supply pipeline to pollute domestic water. Whether liquid or solid excrement contains a large amount of odor and various pathogens of intestinal infectious diseases and parasitic diseases, if the odor and the pathogens enter a water tank or a water supply pipeline, problems such as pollution are caused. The use of vacuum assisted toilets must address this problem.

Patent No. 95101429.3 discloses a vacuum assisted toilet with a dual trap comprising a toilet outlet having a centerline, said toilet outlet having a substantially constant predetermined cross section along at least half of its length and having upper and lower bends, and a bend passage between the bends, a vacuum source applied to the bend passage during toilet flushing, whereby the air path providing the vacuum source to said bend passage is open at both ends, so that a large amount of odors and various intestinal infectious and parasitic pathogens contained in liquid or solid waste as previously described are readily drawn into the tank and hence into the water passage.

Also, as disclosed in patent No. 200880020357.9, a pressurized trapway toilet provides a backflow prevention feature, during normal toilet operation, with only low pressure water in the trapway. However, if the pressure increases too much above the pressure (about 10 cm of water) that occurs during a normal flush, as in a practical toilet plunger, the backflow preventer 120 prevents water and waste from being forced up the conduit 90 into the container 42. This patent discloses a method for preventing sewage from entering a tank using a pressure difference principle, and has a disadvantage in that a backflow preventing member thereof is closed only when the pressure difference reaches a set value (about 10 cm water), and an opening is opened when the pressure difference is lower than the set value. And during normal flushing the pressure difference will not reach the set value, so during normal flushing the air transfer duct is open, so that it is inevitable that odour and contaminants will enter the water tank.

In addition, the vacuum-assisted flush toilet is easy to suck up water in an upper trap due to the existence of a vacuum source, so that the water seal is insufficient.

Disclosure of Invention

By means of the toilet of the present invention, the above-mentioned drawbacks can be solved, thus achieving other advantages that will be described. The invention can close the vacuum source channel at the later stage of the flushing of the closestool by arranging the delayed air exhaust closing system in the third water storage part, thereby preventing odor and pollutants from entering the water tank and preventing insufficient water seal of the upper trap caused by over-suction.

The purpose of the invention is achieved by the following technical scheme:

a vacuum assisted toilet with a delayed bleed closure system, the toilet of the invention comprises a toilet base, a tank for supplying water into said toilet base at the start of a flush, a flush line carrying water downstream to the sewer, a vacuum source applied to a curved passage during the toilet flush, a delayed bleed closure system connected to said curved passage for controlling the circulation of the vacuum source passage on and off.

The water tank is divided into a first water storage part, a second water storage part and a third water storage part, a water inlet valve is connected in the first water storage part, a water discharge valve is connected in the second water storage part, and a delayed air exhaust closing system is connected in the third water storage part.

The first water storage part is communicated with the bottom of the second water storage part, the second water storage part is communicated with the bottom of the third water storage part, and the upper end of the third water storage part is closed.

The delayed pumping shut-off system consists of one main body, one connecting rod, one inner floating barrel, one delayed check valve and one sealing gasket.

The main body of the time-delay air exhaust closing system is provided with a hollow tube which is communicated with a bend channel of the toilet base, the main body further comprises an outer floating barrel with a bottom through hole, the inner floating barrel is arranged in the outer floating barrel, the time-delay one-way valve is arranged in the bottom through hole of the outer floating barrel, the main body further comprises a pair of supports, the connecting rod is sleeved on the supports, the sealing gasket is fixedly connected on the connecting rod, and the connecting rod is hinged with the inner floating barrel.

The connecting rod can wind the support rotates, interior floating bucket can move in outer floating bucket, interior floating bucket can be relative slip in the connecting rod, interior floating bucket and connecting rod are the link system, drive the connecting rod and rotate around the support when interior floating bucket rises or descends.

The upper end of the hollow tube of the main body is provided with a sealing surface, the inner floating barrel drives the connecting rod to rotate around the bracket when descending, and the sealing gasket is attached to the sealing surface to realize sealing.

The first water storage part, the second water storage part, the third water storage part and the outer floating barrel of the water tank are all provided with the same highest water inlet level, and the water levels of the second water storage part and the third water storage part are always at the same height.

When the water tank starts to drain, the water level of the second water storage part and the water level of the third water storage part of the water tank quickly descend, and the descending speed of the water level in the outer floating barrel is lower than that of the second water storage part and the third water storage part, so that the delayed closing function is realized.

Compared with the prior art, the invention has the following remarkable advantages:

1. the time-delay air suction closing system is adopted, the closing and opening of the vacuum source channel are controlled by using time, and the control is accurate, reliable and stable;

2. the delayed air suction closing system is adopted, so that the vacuum source channel can be completely closed, and odor and pollutants are better prevented from entering the water tank and the water supply system;

3. by adopting the delayed air exhaust closing system, the closing of the vacuum source channel in the later flushing period of the closestool can be accurately controlled, and the water seal insufficiency caused by over-suction of water in the upper trap can be prevented.

Drawings

FIG. 1 is a partial cutaway perspective view of the present invention;

FIG. 2 is a front partial cross-sectional view of the present invention;

FIG. 3 is a perspective view of a portion of the water tank of the present invention;

FIG. 4 is a perspective view of the delayed bleed closure system of the present invention with the air passage open.

Detailed Description

The invention will now be further described with reference to the accompanying drawings and detailed description.

The basic idea of the invention is to adopt a delayed air extraction closing system to realize the accurate control of the vacuum source, so that each flushing is more stable and reliable, the odor and the pollutant are prevented from entering the water tank, and the water seal insufficiency caused by over-suction is prevented.

Referring to figures 1, 2, 3 and 4, the vacuum assisted toilet 10 with a delayed bleed closure system of the present embodiment comprises a toilet base 11, a tank 12 for supplying water into said toilet base 11 at the start of a flush, a flush line 30 carrying water downstream to the sewer, a vacuum source applied to a curved pathway 31 during a toilet flush, and a delayed bleed closure system 20 for controlling the opening and closing of the vacuum source.

Water tank 12 separate for first water storage portion 22, second water storage portion 23 and third water storage portion 24 through first baffle 19 and

second baffle

16, 19 bottoms of first baffle reserve the take the altitude and make the bottom intercommunication of third water storage portion 24 and second water storage portion 23 and this reserve the altitude make the water level in two water storage areas can descend and rise in step, 16 predetermined water level lines 26 in bottom of second baffle have a plurality of through-holes 15 for second water storage portion 23 and first water storage portion 22 communicate under predetermined water level lines 26. The water tank 12 on be equipped with a tank lid 13, tank lid 13 inner wall on be equipped with the sealed pad 21 of round along the top of each face of enclosing of third water storage part 24, tank lid 13 compress tightly under the action of gravity sealed pad 21, with third water storage part 24 form sealed area to provide during the erodeing vacuum source, third water storage part 24 be narrow structure under wide for water in the pond can rush into in the closestool pond rapidly during the erodeing, guarantees that the different height of water level decline can both provide stable vacuum source. A delayed extraction shutdown system 20 is installed in the third water storage portion 24.

As shown in fig. 3, the applicant has provided a system having a function of turning off a vacuum source with a delay, the delayed pumping off system 20 is fixedly connected to the water tank 12 through the lower end of the body 201, the main body 201 has a hollow tube 2011, the hollow tube 2011 is communicated with the upper curved channel 31 of the toilet, the main body 201 further includes an outer float bucket 2012 having a bottom through hole, an inner float bucket 202 disposed inside the outer float bucket 2012, and can float up and down in the outer floating barrel by the buoyancy of water, a time-delay one-way valve 203 is arranged in the through hole at the bottom of the outer floating barrel, the time-delay one-way valve controls the discharge speed of the water in the outer floating barrel 2012 by depending on the up-and-down movement of the water, the main body further comprises a pair of brackets 2013, one end of a connecting rod 204 is sleeved on the brackets 2013 and can rotate around the brackets 2013, a sealing gasket 205 is fixedly connected to the connecting rod 204, and the other end of the connecting rod 204 is hinged to the inner floating barrel 202.

At the beginning of a flushing cycle or when flushing is not started, the water levels of the first water storage part 22, the second water storage part 23 and the third water storage part 24 in the water tank all reach the preset water level line 26, at the moment, the time-delay one-way valve 203 is attached to the bottom of the outer floating barrel 2012 by virtue of buoyancy, the outer floating barrel 2012 is filled with water, the inner floating barrel 202 is in a floating state due to the buoyancy, the inner floating barrel 202 pushes the connecting rod 204 to rotate around the support 2013, and the vacuum channel is in an open state. When the water level line 26 in the third water storage part 24 descends, the water level line in the outer floating barrel 2012 cannot descend immediately, only the water level line 26 descends to a certain height, the buoyancy provided at the moment is not enough to support the delay one-way valve 203, the delay one-way valve 203 falls by self gravity, the delay one-way valve 203 is opened at the moment, the water in the outer floating barrel 2012 slowly descends and is finally discharged completely, meanwhile, the inner floating barrel 202 slowly loses buoyancy and begins to descend, the connecting rod 204 reversely rotates around the support 2013 due to the descending of the inner floating barrel 202, the sealing gasket 205 and the sealing surface 20111 are finally attached, and the vacuum channel is closed. The applicant has shown through experimentation that the vacuum source passage needs to be closed with a delay of 1-2 seconds after the flushing is initiated to ensure that the vacuum pressure does not drop and that the contents of the toilet bowl do not enter the tank.

The working mode of the vacuum auxiliary flush toilet with the delayed air exhaust closing system is as follows: a conventional water inlet valve 14 is installed in the first water storage part 22, water in a water supply pipeline is injected into the first water storage part 22 through the water inlet valve 14, is injected into the second water storage part 23 through a through hole 15 formed in the bottom of the second partition plate 16, and is injected into the third water storage part 24 through a reserved height in the bottom of the first partition plate 19 until the water level reaches a preset water level line 26. A conventional drain valve assembly 17 is installed in the second water storage part 23, and when the drain valve assembly 17 is driven, the water in the second water storage part 23 and the third water storage part 24 in the water tank 12 is rapidly discharged along a water outlet channel embedded along the inner periphery of the toilet water tank 28 and flows into the toilet water tank 28 to form a certain flushing force. At this time, the water level line 26 in the second water storage part 23 and the third water storage part 24 in the water tank 12 starts to rapidly descend, and a vacuum source is generated at the upper part of the closed third water storage part 24. An air passage 25 is connected to the curved passage 31, and the air passage 25 is connected to the lower mouth of the hollow tube 2011 in the third water storage portion 24, so that the vacuum source is communicated to the curved passage 31 through the hollow tube 2011 and the air passage 25 to provide a vacuum negative pressure during flushing. The vacuum negative pressure and the gravity difference generated by the height of the water level in the toilet bowl generate better siphon effect to assist in pumping out the contents of the toilet. Meanwhile, when the water level line 26 of the third water storage part 24 falls to a position which is not enough to support the delay check valve 203, the delay check valve 203 moves downwards under the action of gravity, at this time, the water in the outer floating barrel 2012 slowly falls, and simultaneously, along with the slow fall of the water in the outer floating barrel 2012, the inner floating barrel 202 loses buoyancy and slowly falls, so that the connecting rod 204 reversely rotates around the bracket 2013, and finally, the sealing gasket 205 is attached to the sealing surface 20111 of the hollow pipe. The vacuum assisted toilet with a delayed bleed shut-off system of the present invention utilizes an auxiliary vacuum source to reduce the amount of water needed for flushing and achieve an effective and better flushing effect, resulting in the removal of nearly all of the contents of the toilet bowl. When solid waste is present, only about 3 liters of water need be used per flush, which is half the water required with the same design but in a toilet without vacuum assistance.

Therefore, the vacuum auxiliary water closet with the delayed air exhaust closing system not only realizes the functions of the original vacuum auxiliary water closet, but also has better effect. Most importantly, the present invention uses the delayed pumping shut-off system 20 to close the vacuum source passage during the late flush period of the toilet to prevent odor and contaminants from entering the tank and prevent over-suction from causing insufficient water seal in the upper trap.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A vacuum assisted toilet bowl comprising a toilet base, a tank for supplying water into said toilet base at the start of a flush, a flush line carrying water downstream to a sewer, a vacuum source applied to a curved path during a toilet flush, a delayed bleed closure system connected to said curved path for controlling the circulation of the vacuum source path on and off;

the water tank is divided into a first water storage part, a second water storage part and a third water storage part, a water inlet valve is connected in the first water storage part, a water discharge valve is connected in the second water storage part, and the delayed air exhaust closing system is connected in the third water storage part;

the first water storage part is communicated with the bottom of the second water storage part, the second water storage part is communicated with the bottom of the third water storage part, and the upper end of the third water storage part is closed;

the time-delay air extraction closing system is characterized by comprising a main body, a connecting rod, an inner floating barrel, a time-delay one-way valve and a sealing gasket;

the main body of the time-delay air extraction closing system is provided with a hollow pipe which is communicated with a bend channel of the toilet base, the main body also comprises an outer floating barrel with a bottom through hole, the inner floating barrel is arranged in the outer floating barrel, the time-delay one-way valve is arranged in the bottom through hole of the outer floating barrel, the main body also comprises a pair of supports, the connecting rod is sleeved on the supports, the sealing gasket is fixedly connected on the connecting rod, and the connecting rod is hinged with the inner floating barrel;

the connecting rod can rotate around the bracket, the inner floating barrel can move in the outer floating barrel, the inner floating barrel can relatively slide in the connecting rod, the inner floating barrel and the connecting rod are a linkage system, and the connecting rod is driven to rotate around the bracket when the inner floating barrel rises or falls;

the first water storage part, the second water storage part, the third water storage part and the outer floating barrel of the water tank are all provided with the same highest water inlet level, and the water levels of the second water storage part and the third water storage part are always at the same height;

when the water tank starts to drain, the water level of the second water storage part and the water level of the third water storage part of the water tank quickly descend, and the descending speed of the water level in the outer floating barrel is slower than that of the second water storage part and the third water storage part, so that the delayed closing function is realized.