CN2628603Y - Infectious patients' fecal sanitation and antiepidemic treating apparatus - Google Patents
Infectious patients' fecal sanitation and antiepidemic treating apparatus Download PDFInfo
- Publication number
- CN2628603Y CN2628603Y CN 03241989 CN03241989U CN2628603Y CN 2628603 Y CN2628603 Y CN 2628603Y CN 03241989 CN03241989 CN 03241989 CN 03241989 U CN03241989 U CN 03241989U CN 2628603 Y CN2628603 Y CN 2628603Y
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- hot pressing
- ight soil
- treating apparatus
- storehouse
- epidemic
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- Expired - Lifetime
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model relates to an epidemic prevention device for dealing with the infected patients feces, which is essentially composed of connecting in turn a diverging unit for feces and urine (1), a storage 6, a supply bunker 8, an aggregate feeder 9, and a forced thermal warehouse (2), and a urine storage pot connects with the other urine entrance in a urine storage pot 19. The air outlet 34 of a forced thermal warehouse and the air outlet 33of the urine storage pot are arranged respectively with an assisting thermolysis device (3), and a cyclonic and gas cooling device (4). The utility model is arranged additionally the main parts such as the aggregate feeder, the forced thermal warehouse with special structures and the heating components arranged additionally in the urine storage pot, thereby infective virus from feces of infected patients can be killed thoroughly, and dealing with sanitation and epidemic prevention from source on human feces can be realized. The device consumes low energy, has high efficiency, and has no air pollution.
Description
Technical field
The utility model relates to the dip-dye structure that virus spread in the excreta such as ight soil is disintegrated in application " pyrolysis technique principle " immediately, makes a kind of small-sized machine device that be widely used in isolation ward washroom or epidemic prevention zone and foreign guest special-purpose lavatory etc. of its forfeiture to the sensitive cells infection activity.
Background technology
As everyone knows, the human feces output is big, contain harmful organisms such as various pathogens, dip-dye virus, pollution to soil, water body, air, transmission of disease is serious day by day, many because of clearing and focus on the problem that produces and derive from, difficulty is big, needs the joint efforts of the whole society and the cooperation support of multiple technologies scheme effectively to solve.So-called pyrolysis technique, be actually material is heated under anoxybiotic or anaerobic condition, also can be described as distillation process, in industrial this technology mainly is to be used for the chain of macromolecular compound fracture (heat decomposition temperature is: 400～500 ℃), make it to become gas or oils, the solids etc. of low molecular compound monomer, efficiently utilize again, so pyrolysis products has very high technical requirements, generally need to add catalyzer, and will prevent local charing and technical operation complexity such as collection respectively.The fresh excreta that the epidemic victim drains; the microbial count height; it is big to contaminate viral density; but each virus only contains RNA thing DNA nucleic acid; viral nucleic acid is a virus multiplication; the material base of hereditary variation and the property contaminated; the main effect of protein is the capsid that constitutes virus; the nucleic acid of protection virus also determines the specificity of virus infections and antigenicity etc.; the heat sensitivity of virus structure is strong and have certain hydrophobicity (its death point is not high; about about 60 ℃); so its thermal decomposition intensity of contaminating structure is low; time is short; can under normal pressure and low temperature (110 ℃), carry out; so to the health and epidemic prevention thermolysis process of epidemic victim's ight soil, technology simple (as the charing that need not consider ight soil itself etc.); it is low to consume energy; the efficient height.
Worldwide current, ight soil comprises patient's ight soil between municipal sanitary, mostly dash by drainage facility input Wastewater Treatment Plant excrement processing down through water, when the infectious disease outbreak of epidemic, public lavatory, city and hospital's isolation ward ight soil are through arranging to Wastewater Treatment Plant behind the pharmacy disinfection repeatedly again, for example all public lavatorys of Beijing are except that with disinfectant inner and periphery being carried out three sterilizations the excrement well being carried out the ight soil sterilization by 0.5 ton of injected volume with calcium oxychloride every day; Accept two ones of the Beijing Xiaotangshan Hospital of SARS patient specially for medical treatment, excretas such as patient's ight soil, urine repeatedly sterilized, and through hospital independently Wastewater Treatment Plant once more strict sterilization handle the back and discharge social Sewage Plant.So expenses for prevention and control height, heavy, the Disinfection Effect of work are difficult to monitoring, and exist virom crosome through pickup, volatilization, atomizing etc. or be attached to tiny grit and enter airborne major hidden danger.The Chinese patent communique discloses a utility model patent " feces of toilet is handled the recovery machine ", the patent No.: ZL002086182.Its major defect and weak point are: what one, ight soil was directly gone into excrement storehouse, many person-times of ight soil in closet focuses on, does not have rapid heat requirement effect, also is difficult to guarantee the temperature and time of virus structure thermal decomposition; In addition, pressurized ight soil is easily fouling on the bulkhead of high-temperature region also, produces the difficulty that the smell of burning has increased vent gas treatment.Two, be directly to communicate with the lavatory because of forcing to decompose the storehouse, so can not control the inlet condition in the storehouse and guarantee that the pressure and temperature in the storehouse also can make the foul odour of generation disperse, and influences environment around the lavatory reaches by the excrement storehouse.Three, the top clearance of double-roll type electric evaporator excessive (3mm) can not be regulated, because of the quality exquisiteness of fresh excreta, there are adsorbed water, excrement group to contain internal water and various combined water around the excrement unity structure, excesssive gap can not make these water efficiently separate, so dewatering efficiency is low.Four, go into the switching that the sphere on the excrement storehouse is sealed up a door, promote by electromagnet, noise is big, the life-span is short, poor reliability.Five, the urine in the storage urine pot is by the microbiological anaerobic fermentation process, dip-dye activity that can not break virus, and fermentation period is long, the hidden danger that exists virom crosome to run off and spread.
Summary of the invention
The purpose of this utility model is to provide a kind of cost and operating cost cheap, has to prevent virus atomizing communication function, makes its health and epidemic prevention effect better, and environmental benefit is higher, the novel fecal treatment equipment that range of application is wider.
This purpose realizes with following technical proposal: epidemic victim's ight soil epidemic prevention treating apparatus includes fecaluria diversion mechanism, feed hopper, the storage urine pot of forcing the pyrolysis storehouse and being connected with pipeline with diversion mechanism, wherein going between excrement storehouse and the feed hopper in the fecaluria diversion mechanism is provided with storage bin, is connected with the refining charging gear with pipeline between feed hopper and pressure pyrolysis storehouse.Described refining charging gear is to be provided with gear pump to constitute in airtight shell.Described pressure pyrolysis storehouse is that set discharging auger constitutes be provided with three hot pressing rollers that have a scraper plate and hot pressing roller in warehouse below, wherein the mutual alignment of three hot pressing rollers will guarantee that the line in the center of circle of its three rollers constitutes triangle, between first hot pressing roller and second the hot pressing roller apart from being not more than 2mm, between second hot pressing roller and the 3rd the hot pressing roller apart from being not more than 1.5mm, described hot pressing roller is by hot core, electric-heating assembly is housed within it, is provided with extruded sleeve in its outside, the bottom of extruded sleeve connects and composes by thimble, end cap and travelling gear.Seal up a door suitable for reading being provided with slidably of going into the excrement storehouse, it is connected and composed by drive motors, crank and connecting rod.Be provided with ight soil boil-off gas gas outlet in the upper end of forcing the pyrolysis storehouse, be provided with heating component in the described storage urine pot.Can be provided with the auxiliary heat decomposer on the gas outlet of forcing the pyrolysis storehouse, the gas outlet of auxiliary heat decomposer is provided with the sudden and violent air cooling radiator cooler of whirlwind.The gas outlet of described storage urine pot can be connected with the air inlet port of auxiliary heat decomposer.
Advantage of the present utility model is: can produce superheated steam and kill and disintegrate microorganisms such as infective virus in patient's urine, the ight soil, having solved human feces handles from the health and epidemic prevention on the source, and can before the excreta cooling, (in the virus killing Best Times) carry out immediately, need not contact cleaning containers such as bag, bucket before this, do not need water to dash (also can in the sudden and violent gas condensing tower of whirlwind, reclaim the clean water in the excreta, use) health and epidemic prevention reliability height as cleaning waters such as dilution disinfectants; Because this utility model can make patient's excreta integrated by producing, collect final processing, so reduced the expense of processing procedure and health and epidemic prevention significantly; Power consumption is low aspect its stabilizing, efficient is high, do not have air pollution in that excreta dehydration, solid shape, venting volatilization etc. are made; The end product free from extraneous odour of ight soil, in light weight, easy degraded, can be used as the lawn, flower fertilizer uses on the spot, (be about: 6410KJ/Kg), also can be directly use because of its calorific value is higher as the clean fuel of hospital's incinerator; Urine after treatment, free from extraneous odour, purity height except that can be used as flowers and plants fertilizer, also are (pharmacy etc.) biochemical industry raw materials of high-quality.The utility model pays attention to using pyrolysis technique rapidly and efficiently, so saved the aerobic degradation processing section, it has improved the mounting means and the quality of fit of hot pressing roller, so reduced manufacturing cost; This device volume is little, installs simple.
Description of drawings
Following accompanying drawing has provided embodiment of the present utility model
Fig. 1: be the utility model overall structure connection diagram.
Fig. 2: for Fig. 1 removes B-B partial cutaway right view behind the hot pressing roller.
Fig. 3: for forcing the partial cutaway enlarged drawing in pyrolysis storehouse.
Fig. 4: for the A-A of Fig. 1 to the partial cutaway vertical view.
Fig. 5: be the installing plate view of hot pressing roller.
Fig. 6: be the be connected view of discharging auger with shell flange.
Fig. 7: auxiliary heat decomposes the jar structure schematic diagram.
Fig. 8: the sudden and violent air cooling of whirlwind is the tower structure schematic diagram but.
Fig. 9: hot pressing roller exploded view.
The specific embodiment
Embodiment one
Shown in Fig. 1～6: fecaluria diversion mechanism I is fixedly mounted on the storage bin 6, and there is closet urine outlet 5 this diversion mechanism bottom and goes into excrement storehouse 4.The fixed installation track 32 of sealing up a door on this goes into the excrement storehouse, sealing up a door 1 is connected with slide, and drive motors 2 is fixedly mounted on the closet housing, and makes the reciprocating motion of sealing up a door by crank 3 and connecting rod.The urine outlet 5 of this diversion mechanism is connected with import 21 pipelines of storage urine pot 19.The storage bin 6 that this diversion mechanism is gone into below the excrement storehouse is fixedly mounted on the feed hopper 8 of housing 7, and this feed hopper communicates with refining feed gear pump 9, and refining feed gear pump is communicated with forcing pyrolysis storehouse II by discharging opening 10 through the housing interior conduit.Three hot pressing rollers 57 are housed below this discharging opening, the structure of hot pressing roller and mounting means (referring to Fig. 9): the hot pressing roller is made of hot core 25, extruded sleeve 23, thimble 29, end cap 24, hot in-core is equipped with electric-heating assembly 53, one end of this hot core is equipped with copper sheathing 26, there is the thimble taper hole at other end center, the fixedly connected end cap 24 of extruded sleeve one end constitutes outer extruded sleeve assembly, thimble 29 is installed at inboard center at end cap, hot core and copper sheathing and the thimble sliding connection of outer extruded sleeve assembly by two ends constitute hot pressing roller 57.(see figure 2) hot pressing roller is by the installing hole 15 at housing two ends and through left and right installation board 14 location, (mounting plates structure is seen Fig. 5), be installed on the flange table top at housing two ends, constitute suspended wall structure easy for installation, the extruding fit clearance of three hot pressing rollers is respectively 2mm and 1.5mm, its installation accuracy is guaranteed by the installing hole on the installing plate, its concrete mounting means (see figure 3) is: the installation shaft and the thermal insulation slab 28 of the hot core of hot pressing roller are fixedly mounted on the flange table top of casing by nut together, on the right installing plate of extruded sleeve, fixedly mount slip copper sheathing 27 and right thermal insulation slab 28 earlier, again with outer extruded sleeve assembly through the slip copper sheathing right installing plate of packing into, after extruded sleeve is inserted in hot core and puts in place, tighten the attachment screw of left and right installation board and casing flange table top, key connects travelling gear 30 on the end-cover axle of extruded sleeve assembly outside.(seeing Fig. 1,2) is equipped with scraper 11 respectively on the outer extruded sleeve of three hot pressing rollers 57.Installing hole on the scraper and blade shaft matched in clearance, the blade shaft two ends are contained on the housing, and scraper is close to through being enclosed within the torsionspring on the blade shaft and the outer extruded sleeve of hot pressing roller.Below three hot pressing rollers, discharging auger 12 is housed, the right-hand member of this discharging auger is contained on the bearing 13 of housing, and the travelling gear of this discharging auger is housed, the left end of this discharging auger is installed on the bearing 55 of discharging flange 54, this discharging flange is fixedlyed connected with shell flange 56, this shell flange connects Material collecting box for harvesting 16 through sealing mat, the Material collecting box for harvesting lower discharge port connects airtight discharging lid 17 by screw rod, the worry net is equipped with at the discharging opening place that this discharging covers, and the valve 18 that can regulate air inflow is housed below this discharging lid.
Embodiment two
Gas outlet 34 in the pressure pyrolysis storehouse of embodiment one is provided with the auxiliary heat decomposer, shown in Figure 7, gas outlet 34 links through pipe laying 52 and blower fan 36 sealings of dredging that are contained on the auxiliary heat decomposition jar 35, thin-walled heat pipe 37 in the other end of dredging blower fan and auxiliary heat decompose jar communicates; the thin-walled heat pipe is fixedly mounted on the end cap 38 that auxiliary heat decomposes jar; this end cap is through airtight connection of flange that sealing mat and auxiliary heat decompose jar; the airtight outlet pipe 39 that communicates with the thin-walled heat pipe is housed on the end cap, and the heat radiation that the other end of outlet pipe and auxiliary heat decompose jar top covers for 40 airtight connection of air inlet port.This heat radiation lid is fixed on through the asbestos seal pad on the adpting flange on auxiliary heat decomposition jar top, in the following jar of heat radiation lid heater assembly 41 is housed, and gas outlet 42 is arranged at the left end bottom that auxiliary heat decomposes jar.The gas outlet end that this auxiliary heat decomposes jar is provided with the sudden and violent air cooling radiator cooler of whirlwind.Shown in Figure 8, this gas outlet communicates through the air inlet port 44 of the sudden and violent gas cooling tower 43 of pipeline 45 and whirlwind, and air inlet port is from the interior round tangential direction air inlet of the sudden and violent gas cooling tower of whirlwind.The sudden and violent gas ventilation fan 46 of tangential direction air inlet is equipped with on the top of the sudden and violent gas cooling tower of this whirlwind, and the air inflow of ventilation fan is about 120 times of processing tail gas air inflow.The sudden and violent gas cooling tower of whirlwind is installed in outdoor, in take on tracheae 47, external surface has fin, on the outlet pipe 48 of its underpart airtight bleeder cock is housed.
Embodiment three
On the basis of embodiment one, example two, in the threeway 50 of dredging fan air inlet 49, handle 33 airtight connections of gas outlet of the storage urine pot 19 in storehouse through pipeline 51 and high temperature anaerobic.
The course of work of this device is as follows: when patient drains, through sensing two-way travel switch drive motors is started, seal up a door and open automatically, ight soil enters feed hopper 8 through going into excrement storehouse 4, and urine enters the storage urine pot 19 in high-temperature anaerobic fermentation storehouse, seals up a door when the people leaves closet and closes.When ight soil is prescribed a time limit near the following of storage bin 6, the energising of hot pressing roller heats up, automatically cut off the power supply during to design temperature, refining feed pump 9 starts simultaneously, by charging aperture 10 continuous dosing of very of forcing the pyrolysis storehouse, on extruded sleeve 23 surfaces, extruded sleeve rotates to the scraper place and is scraped ight soil, enters Material collecting box for harvesting 16 through bottom conveying auger 12 through the extruding of hot pressing roller top clearance, roasting knot.The rotating speed of the temperature of three hot pressing rollers and extruded sleeve assembly can be set and regulate and control automatically.Force pyrolysis storehouse II below Material collecting box for harvesting 16, can regulate valve 18 air inlets of air inflow, ight soil boil-off gas and fugitive constituent are through giving vent to anger 34 in the storehouse, introduce thin-walled heat pipe 37 by dredging blower fan 36, and enter auxiliary heat and decompose jar upper portion heater assembly 41 places thermal decomposition process once more, tail gas is entered in the sudden and violent gas cooling tower of whirlwind by gas outlet 42, after sudden and violent gas, cooling, dilution, through pipeline 47 dischargings, condensed water is collected through tower bottom water tap.After liquid level in the storage urine pot 19 puts in place, but the heater assembly 20 by design temperature is heat-treated sterilization, surpassing design temperature cuts off the power supply automatically, urine after the sterilization is in airtight storehouse, anaerobic fermentation is handled, boil-off gas in the storage urine pot, is introduced auxiliary heat decomposition jar simultaneously and is handled once more and discharge through the sudden and violent gas cooling tower of whirlwind through threeway 50 and the processing tail gas of forcing pyrolysis storehouse II by outlet pipe, and this storage urine pot is leading through hydraulic pump 22 air inlets by reclaiming.
Going into the inner surface of excrement storehouse 4, storage bin 6 and feed hopper 8 handles through non-sticking lining: this device is except that " the sudden and violent gas cooling tower 43 of whirlwind ", and other parts and pipeline external surface are handled through heat insulating coating, (junction notes fluid sealant).
Claims (7)
1, a kind of epidemic victim's ight soil epidemic prevention treating apparatus, it includes fecaluria diversion mechanism (I), feed hopper (8), the storage urine pot (19) of forcing pyrolysis storehouse (II) and being connected with pipeline with diversion mechanism, it is characterized in that being provided with storage bin (6) in going between excrement storehouse (4) and the feed hopper (8) of fecaluria diversion mechanism (I), between feed hopper and pressure pyrolysis storehouse (II), be connected with refining charging gear (9) with pipeline, described refining charging gear is to be provided with gear pump (9) to constitute in airtight shell, described pressure pyrolysis storehouse (II) is to be provided with three hot pressing rollers (57) that have scraper plate in warehouse, and the set discharging auger (12) in hot pressing roller below constitutes, and the mutual alignment of three hot pressing rollers will guarantee that the line in the center of circle of its three rollers constitutes triangle, wherein between first hot pressing roller and second the hot pressing roller apart from being not more than 2mm, distance is not more than 1.5mm between second hot pressing roller and the 3rd the hot pressing roller.Be provided with ight soil boil-off gas gas outlet (34) in the upper end of forcing pyrolysis storehouse (II), be provided with heating component (20) in the described storage urine pot (19).
2, epidemic victim's ight soil epidemic prevention treating apparatus according to claim 1, it is characterized in that can being provided with auxiliary heat decomposer (III) on the gas outlet (34) of forcing the pyrolysis storehouse, the gas outlet of auxiliary heat decomposer (42) are provided with the sudden and violent air cooling radiator cooler of whirlwind (IV).
3, epidemic victim's ight soil epidemic prevention treating apparatus according to claim 2 is characterized in that the gas outlet (33) of described storage urine pot (19) can be connected with the air inlet port (51) of auxiliary heat decomposer (III).
4, according to claim 1,2 or 3 described epidemic victim's ight soil epidemic prevention treating apparatus, it is characterized in that the hot pressing roller (32) in the described pressure pyrolysis storehouse is by hot core (25), electric-heating assembly (53) is housed within it, is provided with extruded sleeve (23) in its outside, the bottom of extruded sleeve connects and composes with travelling gear (30) by thimble (29), end cap (24).
5, epidemic victim's ight soil epidemic prevention treating apparatus according to claim 2, it is characterized in that described auxiliary heat decomposer (III) is to be provided with by thermal decomposition jar (35), at the tank body inlet end to dredge that blower fan (36), tank interior are provided with heat pipe (37), the tank body other end has end cap (38), tank body top to be provided with heat radiation lid (40), end cap (38) is communicated with by escape pipe (39) with heat radiation lid (40), the tank body bottom is provided with gas outlet (42), is provided with heating component (41) and constitutes below the heat radiation lid.
6, according to claim 2 or 3 described epidemic victim's ight soil epidemic prevention treating apparatus, it is characterized in that the sudden and violent air cooling radiator cooler of described whirlwind (IV) is by cooling tower (43), side is provided with air inlet port (44) thereon, its opposite side is provided with sudden and violent gas ventilation fan (46), portion is provided with escape pipe (47) within it, and its lower end is provided with outlet pipe (48) and constitutes.
7, epidemic victim's ight soil epidemic prevention treating apparatus according to claim 1 is characterized in that it is connected and composed by drive motors (2), crank (3) and connecting rod in be provided with slidably seal up a door (1) suitable for reading of going into excrement storehouse (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03241989 CN2628603Y (en) | 2003-06-27 | 2003-06-27 | Infectious patients' fecal sanitation and antiepidemic treating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03241989 CN2628603Y (en) | 2003-06-27 | 2003-06-27 | Infectious patients' fecal sanitation and antiepidemic treating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2628603Y true CN2628603Y (en) | 2004-07-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03241989 Expired - Lifetime CN2628603Y (en) | 2003-06-27 | 2003-06-27 | Infectious patients' fecal sanitation and antiepidemic treating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2628603Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101492232B (en) * | 2009-03-06 | 2011-01-19 | 汪奕刚 | Faeces processor of separation type immediate processing environment friendly toilet |
| CN102454204A (en) * | 2010-10-19 | 2012-05-16 | 曾德邻 | Full gear driving mechanism for mechanical excrement removing closestool |
| CN108033662A (en) * | 2017-12-29 | 2018-05-15 | 浙江宜可欧环保科技有限公司 | Pyrolyzing sludge is desorbed stove |
| CN108670103A (en) * | 2018-06-26 | 2018-10-19 | 西安蓝萱环保科技有限公司 | A kind of ecological protection health and epidemic prevention closet system |
| CN108978821A (en) * | 2018-09-18 | 2018-12-11 | 湖州双快新能源科技有限公司 | Energy saving and environment friendly public lavatory |
| CN110268998A (en) * | 2019-07-26 | 2019-09-24 | 五莲德瑞达牧业机械有限公司 | A kind of negative pressure drying formula cleaning up excrement head |
| CN111904317A (en) * | 2019-05-08 | 2020-11-10 | 李殿奎 | Squatting and sitting dual-purpose toilet capable of recovering excrement and urine resources without flushing |
-
2003
- 2003-06-27 CN CN 03241989 patent/CN2628603Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101492232B (en) * | 2009-03-06 | 2011-01-19 | 汪奕刚 | Faeces processor of separation type immediate processing environment friendly toilet |
| CN102454204A (en) * | 2010-10-19 | 2012-05-16 | 曾德邻 | Full gear driving mechanism for mechanical excrement removing closestool |
| CN108033662A (en) * | 2017-12-29 | 2018-05-15 | 浙江宜可欧环保科技有限公司 | Pyrolyzing sludge is desorbed stove |
| CN108033662B (en) * | 2017-12-29 | 2023-11-17 | 浙江宜可欧环保科技有限公司 | Sludge pyrolysis desorption furnace |
| CN108670103A (en) * | 2018-06-26 | 2018-10-19 | 西安蓝萱环保科技有限公司 | A kind of ecological protection health and epidemic prevention closet system |
| CN108670103B (en) * | 2018-06-26 | 2024-05-03 | 西安蓝萱环保科技有限公司 | Ecological protection sanitary epidemic prevention lavatory system |
| CN108978821A (en) * | 2018-09-18 | 2018-12-11 | 湖州双快新能源科技有限公司 | Energy saving and environment friendly public lavatory |
| CN111904317A (en) * | 2019-05-08 | 2020-11-10 | 李殿奎 | Squatting and sitting dual-purpose toilet capable of recovering excrement and urine resources without flushing |
| CN110268998A (en) * | 2019-07-26 | 2019-09-24 | 五莲德瑞达牧业机械有限公司 | A kind of negative pressure drying formula cleaning up excrement head |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130627 Granted publication date: 20040728 |