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CN105821945B - A kind of automatic anti-block device - Google Patents

A kind of automatic anti-block device Download PDF

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Publication number
CN105821945B
CN105821945B CN201610327452.XA CN201610327452A CN105821945B CN 105821945 B CN105821945 B CN 105821945B CN 201610327452 A CN201610327452 A CN 201610327452A CN 105821945 B CN105821945 B CN 105821945B
Authority
CN
China
Prior art keywords
valve
gas
pipe
liquid separating
dirt
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.)
Expired - Fee Related
Application number
CN201610327452.XA
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Chinese (zh)
Other versions
CN105821945A (en
Inventor
赵望冰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Huashenglutai Technology Co Ltd
Original Assignee
Beijing Huashenglutai Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Huashenglutai Technology Co Ltd filed Critical Beijing Huashenglutai Technology Co Ltd
Priority to CN201610327452.XA priority Critical patent/CN105821945B/en
Publication of CN105821945A publication Critical patent/CN105821945A/en
Application granted granted Critical
Publication of CN105821945B publication Critical patent/CN105821945B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03DWATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D3/00Flushing 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
    • E03D3/10Flushing devices with pressure-operated reservoir, e.g. air chamber
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03DWATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D5/00Special constructions of flushing devices, e.g. closed flushing system
    • E03D5/10Special 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
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03DWATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Epidemiology (AREA)
  • Sanitary Device For Flush Toilet (AREA)

Abstract

The invention discloses a kind of automatic anti-block devices, vacuum pump, gas-liquid separating box, blow-off pipe, monitor and the sewage collection system being sequentially communicated including controller and from top to bottom, it is provided with blow vent on blow-off pipe, dirt inlet is provided in gas-liquid separating box, the dirt inlet is for being connected to external toilet seat;Monitor is fixed in gas-liquid separating box, which there is an induction end for incuding dirt in gas-liquid separating box, the induction end to stretch into gas-liquid separating box and below dirt inlet;Controller is electrically connected with monitor, vacuum pump respectively.Dirt in external toilet seat can be discharged and collected in time by the present invention, and can prevent dirt from blocking.

Description

A kind of automatic anti-block device
Technical field
The present invention relates to anti-block apparatus more particularly to a kind of automatic anti-block devices.
Background technology
Toilet be urinate and defecate for occupant, bathing, the movable space such as washing, but the relatively narrow closing in the space, So that the air in toilet not only reduces user experience, but also dirty because the peculiar smell that urinal generates can not often be eliminated in time The air of dye can also influence health.In consideration of it, more installations can be with the toilet seat of automatic pollution discharge in toilet at present, but the seat Closet usually will appear the problem of blocking, not only so that user usually needs to endure the logical lavatory of stench, but also due to toilet seat blocks It after the stench of generation is dispersed into air and is easy to dissipate in time, greatly reduces user experience.
Invention content
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of automatic anti-block devices, and the device is not Only the dirt in toilet seat can be discharged and be collected in time, and can prevent dirt from blocking.
The purpose of the present invention is realized using following technical scheme:
A kind of automatic anti-block device, including controller and be sequentially communicated from top to bottom vacuum pump, gas-liquid separating box, blowdown Pipe, monitor and sewage collection system are provided with blow vent on blow-off pipe, are provided with dirt inlet in gas-liquid separating box, which is used for The external toilet seat of connection;Monitor is fixed in gas-liquid separating box, which has one to be used to incude dirt in gas-liquid separating box The induction end of object piling height, the induction end stretch into gas-liquid separating box and below dirt inlet;Controller respectively with monitoring Device, vacuum pump electrical connection.
Preferably, a kind of above-mentioned automatic anti-block device further includes an exhaust pipe, one end of the exhaust pipe and vacuum pump Exhaust outlet is connected to, and the other end of exhaust pipe is connected to outside atmosphere, can further increase the air freshness in toilet.
Preferably, a kind of above-mentioned automatic anti-block device further includes blowdown valve and driving device, and blowdown valve is set on gas-liquid point From between case and blow-off pipe, a sewage draining exit is provided on the valve body of the blowdown valve, the sewage draining exit respectively with gas-liquid separating box, blow-off pipe Connection;Driving device is fixed on the valve body of blowdown valve;The output end of driving device and the valve of blowdown valve are drivingly connected, and are used for It drives the valve of blowdown valve to open or close sewage draining exit, gas-liquid separating box may be implemented and be isolated with the simple of sewage collection system.
Preferably, a kind of above-mentioned automatic anti-block device further includes the sealing ring being set between valve and valve body, can be made Have good air-tightness to prevent gas with foreign flavor from leaking between valve and valve body, and weakens rubbing between valve and valve body It wipes.
Preferably, a kind of driving device of above-mentioned automatic anti-block device includes cylinder and connecting rod, and the cylinder block of cylinder is solid Due on the valve body of blowdown valve, the piston rod of cylinder and one end of connecting rod are removably fixed, the other end of connecting rod and row The valve of dirty valve is affixed, can be in order to the movement of control of sewage disposal valve valve.
Preferably, a kind of blowdown valve of above-mentioned automatic anti-block device is butterfly valve, and one and row are provided on the valve of the butterfly valve The corresponding opening of dirty mouth, can save cost.
Preferably, a kind of sewage collection system of above-mentioned automatic anti-block device includes dirt collection band and circular connector, and annular is even One end of fitting is removably fixed with the bottom end of blow-off pipe, and is connected to blow-off pipe;The other end of circular connector with Dirt collection band is connected to, the dirt that can be convenient for changing in sewage collection system.
Preferably, a kind of above-mentioned automatic anti-block device further includes the more than two cross for being symmetrically disposed on blowdown pipe outer wall Bar, circular connector are provided with more than two L-type notches close to one end of blow-off pipe, which is clamped with cross bar, can make The stable connection of circular connector and blow-off pipe, and it is easy to disassemble.
Preferably, a kind of above-mentioned automatic anti-block device further includes a conical screen, which is fixed on gas-liquid point The vertex of a cone from case top, and conical screen stretches into gas-liquid separating box, can be very good to realize the water mist in gas-liquid separating box Filtering, in order to which dirt falls.
Preferably, a kind of above-mentioned automatic anti-block device further includes a curved pipe, one end and the dirt inlet pair of the curved pipe It connects, arc tube wall is bonded with blowdown tube wall, and the other end of curved pipe can be kept away for being docked with the pipeline of external toilet seat Exempt from during dirt enters gas-liquid separating box, the pipeline of external toilet seat causes the pipeline disconnected with gas-liquid separating box because of vibration It opens, is leaked with contaminants.
Compared with prior art, the beneficial effects of the present invention are:
The present invention by setting gradually vacuum pump, gas-liquid separating box, blow-off pipe, monitor and the collection of connection from top to bottom Dirty device, and dirt inlet is opened up in gas-liquid separating box, the negative pressure that vacuum pump is formed in gas-liquid separating box can make external toilet seat Dirt in device is all introduced into along dirt inlet in gas-liquid separating box;And it is deposited in gas-liquid separating box by monitor monitoring Dirt, and blow vent is opened up on blow-off pipe, in this way, controller can start vacuum pump after receiving the signal that monitor is fed back, Make to generate negative pressure in gas-liquid separating box, and the gas or outside air in sewage collection system can enter gas-liquid separation by blow-off pipe In case, and each dirt is broken up, make between each dirt that there are certain intervals, to make the dirt of accumulation continue to fall to sewage collection system In, to realize that being automatically prevented from dirt blocks gas-liquid separating box, make with fresh air in toilet, enhancing user experience.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention;
Fig. 2 is the explosive view of the present invention;
In figure:1, vacuum pump;11, exhaust outlet;2, gas-liquid separating box;21, dirt inlet;3, blow-off pipe;31, blow vent;32, Cross bar;4, monitor;5, sewage collection system;51, dirt collection band;52, circular connector;521, L-type notch;6, blowdown valve;61, valve Body;611, sewage draining exit;62, valve;621, it is open;7, driving device;71, cylinder;72, connecting rod;8, sealing ring;9, curved pipe.
Specific implementation mode
In the following, in conjunction with attached drawing and specific implementation mode, the present invention is described further:
Refer to Fig. 1 and Fig. 2, a kind of automatic anti-block device, including be sequentially communicated from top to bottom vacuum pump 1, gas-liquid point From case 2, blow-off pipe 3, monitor 4 and sewage collection system 5, blow vent 31 is provided on blow-off pipe 3, be provided in gas-liquid separating box 2 into Dirty mouth 21, the dirt inlet 21 is for being connected to external toilet seat;Monitor 4 is fixed in gas-liquid separating box 2, which has One induction end for incuding dirt in gas-liquid separating box 2, the induction end stretch into gas-liquid separating box 2 and under dirt inlet 21 Side.
When external toilet seat has dirt, starting vacuum pump 1 makes to generate negative pressure in gas-liquid separating box 2, since pressure difference is made With the dirt in external toilet seat can be inhaled into along dirt inlet 21 in gas-liquid separating box 2, the dirt into gas-liquid separating box 2 Object enters through blow-off pipe 3 in sewage collection system 5 due to conducting oneself with dignity, and vacuum pump 1 is closed after dirt fully enters gas-liquid separating box 2 and is sealed Close dirt inlet 21.Into gas-liquid separating box 2 dirt in dropping process, due to the viscosity of itself, a large amount of dirt accumulations can be made In the exit of gas-liquid separating box 2, it can not in time drop down onto in sewage collection system 5, cause the outlet obstruction of gas-liquid separating box 2, work as prison The induction end for surveying device 4 detects dirt in the interior accumulation of gas-liquid separating box 2, and inductive signal is sent to controller by monitor 4, control Device processed according to regulating valve of the signal control received between dirt inlet and external toilet seat make dirt inlet and toilet seat it Between connection disconnect, so that dirt inlet is closed, and the regulating valve may be used butterfly valve realization;Wait for that dirt inlet is closed Afterwards, controller control vacuum pump 1 is again started up, since vacuum pump 1 makes to generate negative pressure in gas-liquid separating box 2, and dirt inlet 21 Be closed, therefore under pressure difference effect, gas in sewage collection system 5 by blow-off pipe 3 enter gas-liquid separating box 2 or Person's outside air enters gas-liquid separating box 2 by the blow vent 31 on blow-off pipe 3 through blow-off pipe 3, and enters in gas-liquid separating box 2 Gas can wash the dirt being packed together open so that the position of each dirt and angle change, and are deposited between each dirt In certain interval, to make the dirt of accumulation fall again, until whole dirts enter in sewage collection system 5, in this way, not only can be with The dirt in external toilet seat is discharged in time and by sewage collection system 5 by dirt-collecting, but also it is stifled to be automatically prevented from dirt Gas-liquid separating box 2 is filled in, it is with fresh air in toilet to make, enhance user experience.
In order to which the gas in gas-liquid separating box 2 is discharged into the environment other than toilet in time, to further increase Air freshness in toilet is also additionally arranged an exhaust pipe as a preferred embodiment in the present embodiment, and makes the exhaust pipe One end be connected to the exhaust outlet 11 of vacuum pump 1, the other end of exhaust pipe is connected to outside atmosphere, can will so carry peculiar smell Gas be discharged into outdoor, it is with fresh air in toilet to ensure.
In order to realize that gas-liquid separating box 2 is isolated with the simple of sewage collection system 5, as a preferred embodiment, in the present embodiment It is additionally arranged a blowdown valve 6 between gas-liquid separating box 2 and blow-off pipe 3, and is provided with a sewage draining exit on the valve body of the blowdown valve 6 61 611, so that the sewage draining exit 611 is connected to respectively with gas-liquid separating box 2, blow-off pipe 3, in order to which the dirt in gas-liquid separating box 2 can be with Smoothly enter in sewage collection system 5 along blow-off pipe 3.In addition, also securing a driving on the valve body 61 of blowdown valve 6 in the present embodiment Device 7, and the output end of the driving device 7 is made to be drivingly connected with the valve 62 of blowdown valve 6, the valve for driving blowdown valve 6 62 open or close sewage draining exit 611, to the connection and partition of simple realization gas-liquid separating box 2 and sewage collection system 5.When needs make When dirt in external toilet seat enters gas-liquid separating box 2, the valve 62 of blowdown valve 6 can be made to close sewage draining exit 611, to maintain Negative pressure in gas-liquid separating box 2, consequently facilitating the dirt in external toilet seat fully enters gas-liquid separation under pressure difference effect In case 2, after dirt enters gas-liquid separating box 2, the valve 62 of control of sewage disposal valve 6 opens sewage draining exit 611, and dirt can enter collection In dirty device 5;When the amount of contaminants in sewage collection system 5 reaches specified amount, it can control the valve 62 of blowdown valve 6 by sewage draining exit 611 It closes, in order to the sewage collection system 5 more renewed;And when a large amount of dirt accumulations are in gas-liquid separating box 2, causing gas-liquid separating box 2 When blocking, dirt inlet 21 can be closed at this time, and the valve 62 of control of sewage disposal valve 6 opens sewage draining exit 611, and vacuum pump 1 is in gas-liquid separation The negative pressure generated in case 2 can be such that gas in sewage collection system 5 or ambient atmos enters along gas-liquid separating box 2 along blow-off pipe 3, and rush The dirt being packed together is dissipated, each dirt is made to continue to fall, to which dirt dropping channel be connected automatically.
And in order to make that there is good air-tightness between valve 62 and valve body 61 to prevent gas with foreign flavor from leaking, and weaken Friction between valve 62 and valve body 61, so that blowdown valve 6 is run steadily in the long term, as a preferred embodiment, in the present embodiment It is additionally arranged sealing ring between valve 62 and valve body 61, which may be used the making of the material with greasy property, this reality It applies in example using teflin ring 8, naturally it is also possible to be the other materials with above-mentioned performance.
For the ease of the movement of 6 valve 62 of control of sewage disposal valve, as a preferred embodiment, the driving device in the present embodiment 7 include cylinder 71 and connecting rod 72, wherein the cylinder block of cylinder 71 is fixed on the valve body 61 of blowdown valve 6, the piston rod of cylinder 71 It is removably fixed with one end of connecting rod 72, the other end of connecting rod 72 and the valve 62 of blowdown valve 6 are affixed, in this way, cylinder The movement of 71 piston rods drives connecting rod 72 to move, and the movement of connecting rod 72 can facilitate the closing of realization 6 valve 62 of blowdown valve or open Sewage draining exit 611.In order to save cost, blowdown valve 6 in the present embodiment uses butterfly valve, and be provided on the valve of butterfly valve 62 one with The corresponding opening 621 of sewage draining exit 611, in order to which the dirt in gas-liquid separating box 2 can smoothly enter into sewage draining exit 611 along opening 621.
In order to facilitate the dirt replaced in sewage collection system 5, as a preferred embodiment, the sewage collection system 5 in the present embodiment Including dirt collection band 51 and circular connector 52, wherein one end of circular connector 52 removably bottom end with blow-off pipe 3 Fixed to be simultaneously connected to blow-off pipe 3, the other end of circular connector 52 is connected to dirt collection band 51, in this way, staff is by by ring It is the conveniently replaced dirt collection band 51 for filling dirt that shape connector 52, which is removed,.Further, in order to make circular connector 52 with row The stable connection of dirty pipe 3, and it is easy to disassemble, more than two cross bars 32 have been symmetrical arranged in 3 outer wall of blow-off pipe in the present embodiment, Opened up more than two L-type notches 521 close to one end of blow-off pipe 3 in circular connector 52, and make the L-type notch 521 with Cross bar 32 is clamped, in this way, when mounted, cross bar 32 is made to enter in notch, when cross bar 32 reaches the turning of L-type notch 521, is led to Crossing rotary annular connector 52 can be such that circular connector 52 is fixed with blow-off pipe 3, and pass through symmetrically arranged multiple L-type notches 521 and cross bar 32 can guarantee the connective stability of circular connector 52 and blow-off pipe 3, when needing replacing dirt collection band 51, only need Rotate circular connector 52, you can easily dirt collection band 51 is extractd, greatly facilitates staff's operation, and can be to avoid Make clothing dirty in operation.
In order to realize that the water mist in gas-liquid separating box 2 filters well, in order to which dirt falls, as a kind of preferred side Case is also additionally arranged a conical screen in the present embodiment on 2 top of gas-liquid separating box, and the vertex of a cone of wherein conical screen stretches into gas-liquid point From in case 2, in this way, by the surface tension of water, water mist can be made to condense on conical screen and when the dependence work of vacuum pump 1 Ascending air acts on, and condensing in the water droplet on conical screen surface can climb along conical screen to edge behind 2 top of gas-liquid separating box Fall back to 2 bottom of gas-liquid separating box under 2 tube wall of gas-liquid separating box, and (no ascending air) taper after vacuum pump 1 is stopped Remaining water droplet falls back at the vertex of a cone of conical screen along conical screen surface and drops to gas-liquid under the effect of gravity on strainer 2 bottom of separator box, to realize that water mist filters, in order to which dirt falls.
In order to avoid dirt is during entering gas-liquid separating box 2, connect respectively with external toilet seat and gas-liquid separating box 2 Logical pipeline causes pipeline to be disconnected with gas-liquid separating box 2 because of vibration, is leaked with contaminants, as a preferred embodiment, this reality It applies and is also additionally arranged a curved pipe 9 in example, and one end of the curved pipe 9 is made to be docked with dirt inlet 21,9 tube wall of curved pipe and blow-off pipe 3 tube walls are bonded, and the other end of curved pipe 9 with the pipeline of external toilet seat for docking, to be connected to external toilet seat, due to arc 9 tube wall of pipe is bonded with 3 tube wall of blow-off pipe, and blow-off pipe 3 can form good cushioning effect to the vibrations of curved pipe 9, so as to The vibrations for reducing the pipeline for the external toilet seat being connect with curved pipe 9, at the same time can also improve the pipeline and gas-liquid separation The connective stability of case 2.
It will be apparent to those skilled in the art that technical solution that can be as described above and design, make various other Corresponding change and deformation, and all these changes and deformation should all belong to the protection domain of the claims in the present invention Within.

Claims (10)

1. a kind of automatic anti-block device, which is characterized in that the vacuum pump that is sequentially communicated including controller and from top to bottom, gas-liquid point From case, blow-off pipe, monitor and sewage collection system, it is provided with blow vent on blow-off pipe, dirt inlet is provided in gas-liquid separating box, it should be into Dirty mouth is for being connected to external toilet seat;Monitor is fixed in gas-liquid separating box, which has one to divide for incuding gas-liquid Induction end from dirt in case, the induction end stretch into gas-liquid separating box and below dirt inlet;Controller respectively with monitoring Device, vacuum pump electrical connection;It is provided with regulating valve between the dirt inlet and external toilet seat;The controller and the regulating valve It is electrically connected;The automatic anti-block device further includes blowdown valve, and blowdown valve is set between gas-liquid separating box and blow-off pipe, the blowdown A sewage draining exit is provided on the valve body of valve, which is connected to gas-liquid separating box, blow-off pipe respectively;Driving device is fixed on blowdown On the valve body of valve.
2. a kind of automatic anti-block device according to claim 1, which is characterized in that further include an exhaust pipe, the exhaust pipe One end be connected to the exhaust outlet of vacuum pump, the other end of exhaust pipe is connected to outside atmosphere.
3. a kind of automatic anti-block device according to claim 1, which is characterized in that further include driving device, driving device Output end and blowdown valve valve be drivingly connected, for drive blowdown valve valve open or closing sewage draining exit.
4. a kind of automatic anti-block device according to claim 3, which is characterized in that further include being set between valve and valve body Sealing ring.
5. a kind of automatic anti-block device according to claim 3, which is characterized in that driving device includes cylinder and connecting rod, The cylinder block of cylinder is fixed on the valve body of blowdown valve, and the piston rod of cylinder and one end of connecting rod are removably fixed, even The other end of bar and the valve of blowdown valve are affixed.
6. a kind of automatic anti-block device according to claim 4, which is characterized in that blowdown valve is butterfly valve, the valve of the butterfly valve It is provided with an opening corresponding with sewage draining exit on door.
7. a kind of automatic anti-block device according to claim 1, which is characterized in that sewage collection system includes dirt collection band and annular One end of connector, circular connector is removably fixed with the bottom end of blow-off pipe, and is connected to blow-off pipe;Annular connection The other end of part is connected to dirt collection band.
8. a kind of automatic anti-block device according to claim 7, which is characterized in that further include being symmetrically disposed on outside blow-off pipe More than two cross bars of wall, circular connector are provided with more than two L-type notches close to one end of blow-off pipe, the L-type notch It is clamped with cross bar.
9. a kind of automatic anti-block device according to any one of claims 1 to 8, which is characterized in that further include taper filter Net, which is fixed on gas-liquid separating box top, and the vertex of a cone of conical screen stretches into gas-liquid separating box.
10. a kind of automatic anti-block device according to any one of claims 1 to 8, which is characterized in that further include an arc Pipe, one end of the curved pipe docks with dirt inlet, and arc tube wall is bonded with blowdown tube wall, the other end of curved pipe for The pipeline of external toilet seat docks.
CN201610327452.XA 2016-05-17 2016-05-17 A kind of automatic anti-block device Expired - Fee Related CN105821945B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610327452.XA CN105821945B (en) 2016-05-17 2016-05-17 A kind of automatic anti-block device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610327452.XA CN105821945B (en) 2016-05-17 2016-05-17 A kind of automatic anti-block device

Publications (2)

Publication Number Publication Date
CN105821945A CN105821945A (en) 2016-08-03
CN105821945B true CN105821945B (en) 2018-10-26

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ID=56529899

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610327452.XA Expired - Fee Related CN105821945B (en) 2016-05-17 2016-05-17 A kind of automatic anti-block device

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184506A (en) * 1973-12-29 1980-01-22 Krister Nordberg Vacuum sewer system
DE4136931A1 (en) * 1991-04-23 1992-10-29 Rauno Haatanen DRAIN SYSTEM FOR THE DRAIN UNIT OF A UNIT PRODUCING UNIT
FI105120B (en) * 1998-12-23 2000-06-15 Evac Int Oy Device for transporting waste
CN201809837U (en) * 2010-07-29 2011-04-27 辉煌水暖集团有限公司 Smart dirt-suction toilet bowl
KR101190379B1 (en) * 2012-02-17 2012-10-11 이해룡 Auto discharge equipment of vacuum toilet system
CN205742432U (en) * 2016-05-17 2016-11-30 北京华盛路泰科技有限公司 A kind of automatic anti-block device

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