CN113587555A - Energy-saving device and treatment process for drying materials by using waste heat - Google Patents
Energy-saving device and treatment process for drying materials by using waste heat Download PDFInfo
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- CN113587555A CN113587555A CN202110912159.0A CN202110912159A CN113587555A CN 113587555 A CN113587555 A CN 113587555A CN 202110912159 A CN202110912159 A CN 202110912159A CN 113587555 A CN113587555 A CN 113587555A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
- F26B1/005—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids by means of disintegrating, e.g. crushing, shredding, milling the materials to be dried
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/003—Handling, e.g. loading or unloading arrangements for articles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/14—Drying solid materials or objects by processes not involving the application of heat by applying pressure, e.g. wringing; by brushing; by wiping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses an energy-saving device for drying materials by using waste heat, which comprises: sorting platform, with the adjacent letter sorting case that sets up of letter sorting platform, with the washing case of letter sorting case intercommunication, set up in wash under the case and communicating shredder, with the squeezer that the shredder is connected and set up in the sewage case under the squeezer, be provided with screw conveyer under squeezer one side, screw conveyer keeps away from and is provided with big drying cabinet under squeezer one end, big desicator is placed in big drying cabinet frame, just big drying cabinet frame top rigid coupling has little drying cabinet frame, be provided with little desicator on the little drying cabinet frame, be provided with first diaphragm pump and second diaphragm pump under the conveying subassembly. According to the invention, the heating energy is greatly saved, and the liquid is finally converted into condensed water without pollution and peculiar smell, thereby achieving the purpose of reducing the manufacturing and using cost of equipment.
Description
Technical Field
The invention relates to the technical field of kitchen waste treatment, in particular to a treatment process of an energy-saving device for drying materials by using waste heat.
Background
The existing kitchen waste on-site treatment equipment process generally sorts materials, then performs solid-liquid separation, and uniformly conveys solid materials into a material drying device, when the on-site standard discharge meets the requirement, liquid is usually conveyed into a material drying bin to be dried, and finally steam is condensed into condensed water to be discharged.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the energy-saving device for drying materials by using waste heat, so that the heating energy is greatly saved, and the aims of no pollution and no peculiar smell in the process of converting liquid into condensed water for discharging and reducing the manufacturing and using cost of equipment are fulfilled. To achieve the above objects and other advantages in accordance with the present invention, there is provided an energy saving apparatus for drying materials using waste heat, comprising:
the automatic drying machine comprises a sorting table, a sorting box arranged adjacent to the sorting table, a cleaning box communicated with the sorting box, a shredder arranged under the cleaning box and communicated with the cleaning box, a squeezer connected with the shredder and a sewage box arranged under the squeezer, wherein a screw conveyor is arranged under one side of the squeezer, a large drying box is arranged under one end, away from the squeezer, of the screw conveyor, a small drying box frame is fixedly connected above the large drying box frame, and a small dryer is arranged on the small drying box frame;
a vacuum pump frame is arranged on one side of the large drying box frame, a first vacuum pump and a second vacuum pump are fixed in the vacuum pump frame, and the first vacuum pump and the second vacuum pump are respectively connected with a small dryer and a large dryer;
a first diaphragm pump and a second diaphragm pump are arranged right below the conveying assembly, one ends of the first diaphragm pump and the second diaphragm pump are respectively connected with a sewage tank, and the other ends of the first diaphragm pump and the second diaphragm pump are respectively connected with a small dryer;
the small dryer and the large dryer are respectively socially provided with a heating interlayer, and a steam outlet pipeline of the large dryer is communicated with the heating interlayer of the small dryer;
one side rigid coupling of letter sorting platform has feed mechanism, feed mechanism is used for conveying garbage bin to letter sorting case department.
Preferably, the first small drying box is connected with an exhaust electromagnetic valve, and the screw conveyor is provided with a tail water outlet.
Preferably, the vacuum degree of the first small drying oven is 0-0.03MPa greater than that of the second large drying oven.
Preferably, the squeezer is connected with the shredder, the shredder is connected with the belt feeder, belt feeder one end is provided with the letter sorting silo, the letter sorting silo is connected with feed mechanism.
The treatment process of the energy-saving device for drying materials by using waste heat comprises the following steps:
s1, starting a belt conveyor, a shredder, a squeezer, a screw conveyor, a second large drying box and a first small drying box;
s2, enabling the kitchen waste to enter a sorting trough through a feeding mechanism and then conveying the kitchen waste to a shredder through a belt conveyor for crushing;
s3, dehydrating the crushed material in the step S2 through a squeezer, and conveying the dehydrated material to a second large drying box through a screw conveyor;
s4, feeding the oil-water mixture dehydrated by the squeezer in the step S3 into a sewage tank, and feeding the oil-water mixture into a first small drying box through the sewage tank;
s5, respectively starting a second vacuum pump and a mold temperature controller to heat a second large drying box and a first small drying box;
s6, when the temperature of the first small drying oven reaches 45-55 ℃, discharging oil, closing the exhaust electric valve of the first small drying oven, closing the second vacuum pump, and simultaneously opening the air inlet electric valve of the second vacuum pump to vacuumize the first small drying oven;
s7, a sewage pump outlet pipeline is connected with a discharge line and a valve for discharge.
Preferably, in the step S3, after the last material completely enters the squeezer for 5 minutes, the belt conveyor, the shredder, the squeezer and the screw conveyor are stopped, the hydraulic night gate valve at the feed inlet of the feeding mechanism is closed, and the drying process is performed.
Preferably, in step S4, the first small drying oven is provided with a rinsing water interface, and a liquid level meter is arranged inside the first small drying oven, the oil-water mixture enters the first small drying oven, water is introduced into the first small drying oven through the rinsing water interface to dilute the oil-water mixture, and when the liquid level reaches a control point, the first diaphragm pump or the second diaphragm pump is automatically started to enter the first small drying oven for oil separation and drying.
Preferably, when the first small drying box is in a full box state, a part of materials are conveyed to the second large drying box by opening a pipeline electric ball valve.
Preferably, after the material drying of the second large drying box is completed, when the material is not dried in the first small drying box, the exhaust electromagnetic valve of the first small drying box is opened, the air inlet electric valve of the first vacuum pump is closed while the first vacuum pump is closed, the discharge electric ball valve of the first small drying box is opened, the material in the first small drying box is sucked into the second large drying box through the negative pressure of the second large drying box and the first small drying box, then the discharge electric ball valve of the first small drying box is closed, and the second large drying box continues to dry until the drying is completed.
Compared with the prior art, the invention has the beneficial effects that: the structures are reasonably distributed, so that the space is greatly saved, and the volume of the equipment is reduced. After the treatment process is optimized, the solid material and the liquid material are respectively placed in the second large drying box and the first small drying box, and the liquid material in the first small drying box can be dried by fully utilizing high-temperature steam generated when the second large drying box is used for drying the material, so that the heating energy is greatly saved. Under the action of the first vacuum pump, steam in the first small drying box enters the oil-water separation device along the waste heat recovery pipeline, so that oil-water mixed liquid is maintained at 20-37 ℃, a good oil-water separation effect is ensured, heat energy is utilized in a gradient manner, an energy-saving effect is remarkable, and the aim of reducing the manufacturing and using cost of equipment is fulfilled finally; and the vapor generated in the material drying process enters the condenser to be condensed into condensed water to be discharged, so that peculiar smell emission is avoided, the liquid material is not discharged, the drying treatment is completely carried out, the condensed water is converted into condensed water after the final treatment to be discharged, and no pollution or peculiar smell exists.
Drawings
FIG. 1 is a three-dimensional block diagram of an energy saving device for drying materials using waste heat according to the present invention;
fig. 2 is a process flow diagram of an energy saving device for drying materials using waste heat according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an energy saving apparatus for drying materials using waste heat includes: the automatic sorting machine comprises a sorting table 1, a sorting box 2 arranged adjacent to the sorting table 1, a cleaning box 3 communicated with the sorting box 2, a shredder 4 arranged under the cleaning box 3 and communicated with the cleaning box, a squeezer 5 connected with the shredder 4 and a sewage box 6 arranged under the squeezer 5, wherein a screw conveyor 6 is arranged under one side of the squeezer 5, a large drying box 7 is arranged under one end, far away from the squeezer 5, of the screw conveyor 6, the large dryer 7 is placed in a large drying box frame, a small drying box frame is fixedly connected above the large drying box frame, and a small dryer 8 is arranged on the small drying box frame;
a vacuum pump frame is arranged on one side of the large drying box frame, a first vacuum pump and a second vacuum pump are fixed in the vacuum pump frame, and the first vacuum pump and the second vacuum pump are respectively connected with a small dryer 8 and a large dryer 7;
a first diaphragm pump and a second diaphragm pump are arranged right below the conveying assembly 6, one ends of the first diaphragm pump and the second diaphragm pump are respectively connected with a sewage tank 6, and the other ends of the first diaphragm pump and the second diaphragm pump are respectively connected with a small dryer 8;
the small dryer 8 and the large dryer 7 are respectively socially provided with a heating interlayer, and a steam outlet pipeline of the large dryer 7 is communicated with the heating interlayer of the small dryer 8;
a feeding mechanism 9 is fixedly connected to one side of the sorting table 1, the feeding mechanism 9 is used for conveying the garbage bin to the sorting box 2, solid-liquid two-phase separation is carried out after the materials are processed by a squeezer, the solid materials enter a second large-scale drying box below the equipment, the liquid materials firstly enter a sewage box and are conveyed into a first small-scale drying box after preliminary precipitation and filtration, the water content of the extruded materials is reduced, the volume is reduced, a lot of heating time is saved during material drying, and heating energy is greatly improved;
referring to fig. 2, the first small drying box and the second large drying box are respectively connected with a first vacuum pump and a second vacuum pump, so that the whole device works under a negative pressure state, and the water vapor generated in the material drying process enters a condenser to be condensed into condensed water to be discharged, thereby avoiding odor emission, the first small drying box and the second large drying box are respectively provided with a heating interlayer, a steam outlet pipeline of the second large drying box is communicated with the heating interlayer of the first small drying box, when the second large drying box is dried, the material reaches a boiling point, high-temperature water vapor about 90 ℃ can be continuously generated, the high-temperature water vapor enters the heating interlayer of the first small drying box under the driving of the second vacuum pump to dry the liquid in the first small drying box, the second vacuum pump performs vacuum pumping treatment on the drying cavity of the first small drying box, the negative pressure of-0.08 MPa is maintained in the first small drying box, the boiling point of liquid is about 60 ℃ under the negative pressure, so that under the condition of not increasing the drying power, the liquid material in the first small drying box can be dried by high-temperature steam generated when the second large drying box is used for drying the material, the heating energy is greatly saved, the steam generated in the drying process of the first small drying box enters the oil-water separation device along the waste heat recovery pipeline under the action of the vacuum pump, the oil-water mixed liquid is maintained at 20-37 ℃, the good oil-water separation effect is ensured, the heat energy is really utilized in a gradient way, and the energy-saving effect is obvious. By the treatment, the liquid material is completely dried, and is finally converted into condensed water to be discharged, so that the pollution and the odor are avoided; the large-scale drying cabinet of second is located the top of first small-size drying cabinet, reduces area to saved the space greatly, reduced the equipment volume, but also can carry out the material stoving of solid and liquid respectively.
Furthermore, an exhaust electromagnetic valve is connected to the first small drying box, and a tail water outlet is formed in the screw conveyor.
Furthermore, the vacuum degree of the first small drying box is 0-0.03MPa greater than that of the second large drying box.
Further, the squeezer is connected with the shredder, the shredder is connected with the belt feeder, belt feeder one end is provided with the letter sorting silo, the letter sorting silo is connected with feed mechanism.
The treatment process of the energy-saving device for drying materials by using waste heat comprises the following steps:
s1, starting a belt conveyor, a shredder, a squeezer, a screw conveyor, a second large drying box and a first small drying box;
s2, enabling the kitchen waste to enter a sorting trough through a feeding mechanism and then conveying the kitchen waste to a shredder through a belt conveyor for crushing;
s3, dehydrating the crushed material in the step S2 through a squeezer, and conveying the dehydrated material to a second large drying box through a screw conveyor;
s4, feeding the oil-water mixture dehydrated by the squeezer in the step S3 into a sewage tank, and feeding the oil-water mixture into a first small drying box through the sewage tank;
s5, respectively starting a second vacuum pump and a mold temperature controller to heat a second large drying box and a first small drying box;
s6, when the temperature of the first small drying oven reaches 45-55 ℃, discharging oil, closing the exhaust electric valve of the first small drying oven, closing the second vacuum pump, and simultaneously opening the air inlet electric valve of the second vacuum pump to vacuumize the first small drying oven;
s7, a sewage pump outlet pipeline is connected with a discharge line and a valve for discharge.
Further, in the step S3, when all the last material enters the presser for 5 minutes, the belt conveyor, the shredder, the presser and the screw conveyor are stopped, the hydraulic night gate valve at the feed inlet of the feeding mechanism is closed, and the drying treatment is performed.
Further, in step S4, the first small drying oven is provided with a rinsing water interface, and a level meter is arranged inside the first small drying oven, the oil-water mixture enters the first small drying oven, water is introduced into the first small drying oven through the rinsing water interface to dilute the oil-water mixture, and when the liquid level reaches a control point, the first diaphragm pump or the second diaphragm pump is automatically started, so that the oil-water mixture enters the first small drying oven to be subjected to oil separation and drying treatment.
Further, when the first small drying box is in a full box state, a part of materials are conveyed into the second large drying box by opening an electric ball valve of a pipeline.
Further, after the materials in the second large drying box are dried, when the materials in the first small drying box are not dried, the exhaust electromagnetic valve of the first small drying box is opened, the air inlet electric valve of the first vacuum pump is closed while the first vacuum pump is closed, the discharge electric ball valve of the first small drying box is opened, the materials in the first small drying box are sucked into the second large drying box through the negative pressure of the second large drying box and the first small drying box, then the discharge electric ball valve of the first small drying box is closed, and the second large drying box continues to be dried until the drying is finished.
The number of devices and the scale of the processes described herein are intended to simplify the description of the invention, and applications, modifications and variations of the invention will be apparent to those skilled in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (9)
1. An energy-saving device for drying materials by using waste heat is characterized by comprising:
the automatic sorting machine comprises a sorting table (1), sorting boxes (2) arranged adjacent to the sorting table (1), a cleaning box (3) communicated with the sorting boxes (2), a shredder (4) arranged under the cleaning box (3) and communicated with the cleaning box, a squeezer (5) connected with the shredder (4), and a sewage box (6) arranged under the squeezer (5), wherein a spiral conveyor (6) is arranged under one side of the squeezer (5), a large drying box (7) is arranged under one end, far away from the squeezer (5), of the spiral conveyor (6), the large drying box (7) is arranged in a large drying box frame, a small drying box frame is fixedly connected above the large drying box frame, and a small drying device (8) is arranged on the small drying box frame;
a vacuum pump frame is arranged on one side of the large drying box frame, a first vacuum pump and a second vacuum pump are fixed in the vacuum pump frame, and the first vacuum pump and the second vacuum pump are respectively connected with a small dryer (8) and a large dryer (7);
a first diaphragm pump and a second diaphragm pump are arranged right below the conveying assembly (6), one ends of the first diaphragm pump and the second diaphragm pump are respectively connected with a sewage tank (6), and the other ends of the first diaphragm pump and the second diaphragm pump are respectively connected with a small dryer (8);
the small dryer (8) and the large dryer (7) are respectively socially provided with a heating interlayer, and a steam outlet pipeline of the large dryer (7) is communicated with the heating interlayer of the small dryer (8);
one side rigid coupling of letter sorting platform (1) has feed mechanism (9), feed mechanism (9) are used for conveying the garbage bin to letter sorting case (2) department.
2. The energy-saving device for drying materials by using waste heat as claimed in claim 1, wherein the first small drying box is connected with an exhaust solenoid valve, and the screw conveyor is provided with a tail end water outlet.
3. The energy-saving device for drying materials by using waste heat as claimed in claim 1, wherein the degree of vacuum of the first small drying box is 0-0.03Mpa greater than that of the second large drying box.
4. The energy-saving device for drying materials by using waste heat as claimed in claim 1, wherein the squeezer is connected with a shredder, the shredder is connected with a belt conveyor, one end of the belt conveyor is provided with a sorting trough, and the sorting trough is connected with a feeding mechanism.
5. The process of any one of claims 1 to 4 for the energy-saving device for drying materials by using waste heat, which comprises the following steps:
s1, starting a belt conveyor, a shredder, a squeezer, a screw conveyor, a second large drying box and a first small drying box;
s2, enabling the kitchen waste to enter a sorting trough through a feeding mechanism and then conveying the kitchen waste to a shredder through a belt conveyor for crushing;
s3, dehydrating the crushed material in the step S2 through a squeezer, and conveying the dehydrated material to a second large drying box through a screw conveyor;
s4, feeding the oil-water mixture dehydrated by the squeezer in the step S3 into a sewage tank, and feeding the oil-water mixture into a first small drying box through the sewage tank;
s5, respectively starting a second vacuum pump and a mold temperature controller to heat a second large drying box and a first small drying box;
s6, when the temperature of the first small drying oven reaches 45-55 ℃, discharging oil, closing the exhaust electric valve of the first small drying oven, closing the second vacuum pump, and simultaneously opening the air inlet electric valve of the second vacuum pump to vacuumize the first small drying oven;
s7, a sewage pump outlet pipeline is connected with a discharge line and a valve for discharge.
6. The process of claim 5, wherein in step S3, after the last material enters the squeezer for 5 minutes, the belt conveyor, the shredder, the squeezer and the screw conveyor are stopped, and the hydraulic night gate valve at the feed inlet of the feeding mechanism is closed to perform the drying process.
7. The processing technology of the energy saving device for drying materials by using waste heat as claimed in claim 5, wherein in step S4, the first small drying box is provided with a flushing water port and a liquid level meter inside, the oil-water mixture enters the first small drying box, water is fed into the first small drying box through the flushing water port to dilute the oil-water mixture, and when the liquid level reaches a control point, the first diaphragm pump or the second diaphragm pump is automatically started to feed the oil-water mixture into the first small drying box for oil-separation drying treatment.
8. The process of claim 7, wherein when the first small drying box is full, a part of the materials is transferred to the second large drying box by opening a pipeline electric ball valve.
9. The process of claim 5, wherein when the second large drying oven is used to dry the materials and the first small drying oven is not used to dry the materials, the exhaust solenoid valve of the first small drying oven is opened, the intake solenoid valve of the first vacuum pump is closed while the first vacuum pump is closed, the discharge solenoid valve of the first small drying oven is opened, the materials in the first small drying oven are sucked into the second large drying oven by the negative pressure of the second large drying oven and the first small drying oven, the discharge solenoid valve of the first small drying oven is closed, and the second large drying oven is continuously dried until the drying is completed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110912159.0A CN113587555A (en) | 2021-08-10 | 2021-08-10 | Energy-saving device and treatment process for drying materials by using waste heat |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110912159.0A CN113587555A (en) | 2021-08-10 | 2021-08-10 | Energy-saving device and treatment process for drying materials by using waste heat |
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| CN112547751A (en) * | 2020-10-13 | 2021-03-26 | 宁波泰鑫可精密机械科技有限公司 | Kitchen garbage secondary oil-water separation treatment equipment based on solid-liquid separation |
| CN112517617A (en) * | 2020-12-26 | 2021-03-19 | 河南省华资环保科技有限责任公司 | Kitchen waste intelligent treatment all-in-one machine |
| CN113058980A (en) * | 2021-04-02 | 2021-07-02 | 四川清和科技有限公司 | Oil-water separation system and method for farmhouse le kitchen waste |
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