CN213436277U - Kitchen waste washing pretreatment system - Google Patents
Kitchen waste washing pretreatment system Download PDFInfo
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- CN213436277U CN213436277U CN202022085560.5U CN202022085560U CN213436277U CN 213436277 U CN213436277 U CN 213436277U CN 202022085560 U CN202022085560 U CN 202022085560U CN 213436277 U CN213436277 U CN 213436277U
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Abstract
The utility model discloses a kitchen garbage washing pretreatment systems, include: the device comprises a feeding device, a sand and impurity removing device, an oil separation tank, a mixing tank, a fine grid, a fine slag extruder and a three-phase centrifuge; the sand and impurity removing device comprises a sand and impurity removing integrated machine, a sand lifting screw, a first screw conveyor, a shearing machine and a fine grid feeding pump. The sand-water separator is arranged in the impurity removal stage, so that the situation that fragile heavy materials such as shells and glass are difficult to separate after being crushed is avoided, and the requirement on a rear-end crusher is low due to the sand removal process, the crusher can use a curve type crusher with a smaller volume, the installation space is saved, and the blockage is not easy to occur; the oil extraction process consisting of the oil separation tank, the mixing tank and the three-phase centrifuge is adopted, lean oil slurry at the lower part of the oil separation tank is heated and then sprayed back to the separation and impurity removal working section, a large amount of spraying is carried out to clean organic matters and grease adhered to coarse impurities into a liquid phase, and grease loss in the impurity removal stage is effectively reduced.
Description
Technical Field
The utility model belongs to the technical field of refuse treatment, a kitchen garbage washing pretreatment system is related to.
Background
The pretreatment of the kitchen waste is generally divided into treatment working sections of material receiving, impurity removal, crushing and sorting, sand removal, heating and oil extraction and the like. The kitchen waste is poured into the feed hopper by the garbage truck and is temporarily stored and then is conveyed to the sorting equipment by the screw conveyer. The impurity removing equipment is generally a drum screen with the aperture of about 50 mm. The oversize materials such as bottles, plastic bags, vegetable sides and other large substances are directly output to a residue discharging point by a screw conveyor. The undersize materials are generally organic materials, the organic materials are conveyed to a crushing and sorting machine, the materials are beaten and crushed by a hammer crusher, and the crushed slurry is discharged from sieve holes with the diameter of about 8mm and then enters a desanding system. And discharging the materials with the thickness of more than 8mm from the crusher and then outputting the materials to a slag discharging point by a screw conveyer. The sand removing system is a sand-water separator, slurry is in the sand-water separator, impurities with large specific gravity are deposited to the bottom, such as broken glass, metal, gravel, shells, bones and the like, and then are continuously lifted and output by a screw conveyor at the bottom. And (3) screening the materials after sand removal by 1mm, discharging solid residues on the screen out of a system, and heating filtrate under the screen to about 80 ℃ and then feeding the filtrate into a three-phase centrifuge for oil extraction. The three-phase centrifuge divides the kitchen slurry into three parts of swill oil, waste water and solid residue. The swill oil is recycled, the wastewater enters a wastewater treatment system, and solid slag is output to a slag discharging point.
In the existing treatment system, in the impurity removal stage, more grease and organic materials are brought out by separated impurities; and in the separation and desanding stage, the materials are beaten and crushed and then desanded, and partial shells, glass and other materials are beaten and crushed and are difficult to remove in a large amount in the desanding stage, so that the drum of the centrifuge is severely abraded after the materials enter the three-phase centrifuge. In the desanding stage, a large amount of reclaimed water is required to be recycled and diluted so as to reduce the viscosity of the kitchen slurry to improve the desanding effect, and the effluent of a centrifuge is generally recycled. On the one hand, the centrifugal machine is increased in load and large in energy consumption. The sand removing effect can be reduced by reducing the recycling amount for saving energy consumption.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose is: the kitchen waste water washing pretreatment system is thorough in sand removal and efficient in oil extraction.
The technical scheme of the utility model is that: the utility model provides a kitchen garbage washing pretreatment systems, includes: the device comprises a feeding device, a sand and impurity removing device, an oil separation tank, a mixing tank, a fine grid, a fine slag extruder and a three-phase centrifuge;
the feeding device conveys the kitchen waste to the sand and impurity removing device;
the sand and impurity removing device comprises a sand and impurity removing integrated machine, a sand lifting screw, a first screw conveyor, a shearing machine and a fine grid feeding pump; the sand and impurity removing integrated machine comprises a drum screen, a sand-water separator and a discharge hopper; the upper part of the sand and impurity removing integrated machine is provided with the drum screen; the starting end of the drum screen is lower than the finishing end, and the drum screen is provided with a screen hole with a first preset size; the sand-water separator is arranged on the lower part of the starting end of the drum screen, and a slag outlet is arranged on the lower part of the finishing end of the drum screen; the discharge hopper is arranged at the lower part of the drum screen and is arranged side by side with the sand-water separator; the first end of the sand extracting spiral is arranged at the bottom of the sand-water separator, the second end of the sand extracting spiral is arranged above the first end of the first spiral conveyer, a slag discharging point is arranged below the second end of the first spiral conveyer, and the slag discharging port is arranged above the first spiral conveyer; the first end of the sand lifting screw is lower than the second end of the sand lifting screw, and the first end of the first spiral conveyor is lower than the second end of the first spiral conveyor; the bottom of the discharge hopper is sequentially connected with the shearing machine and the fine grid feeding pump;
conveying the kitchen waste from the starting point end of the drum screen, conveying impurities larger than screen holes of the drum screen to the slag outlet along with the rotation of the drum screen, discharging the impurities to the first spiral conveyor from the slag outlet, conveying undersize of the drum screen to the sand-water separator, lifting heavy substances at the bottom of the undersize to the first spiral conveyor by the sand lifting spiral, overflowing organic slurry on the upper part of the undersize to the discharge hopper, crushing the organic slurry to be below a second preset size by the shearing machine, and conveying the organic slurry to the fine grid by the fine grid feeding pump for solid-liquid separation;
the filtrate separated by the fine grid enters the oil separation tank, and the separated solid slag enters the fine slag extruder;
the oil separation tank and the mixing tank are adjacently arranged, and a separation baffle between the oil separation tank and the mixing tank is lower than peripheral plates on the periphery; the oil separation tank is provided with a first steam ejector and used for heating filtrate to enable grease to float upwards, rich oil slurry on the upper portion of the oil separation tank overflows into the mixing tank, and lean oil slurry on the lower portion of the oil separation tank is conveyed to the sand and impurity removing integrated machine through a reuse water pump;
oil-containing filtrate squeezed by the fine slag extruder enters the mixing tank and is mixed with oil-rich slurry overflowing to the mixing tank from the upper part of the oil separation tank;
the mixing tank is provided with a second steam ejector and is used for directly injecting and heating mixed slurry steam and then pumping the mixed slurry steam to the three-phase centrifugal machine for oil extraction.
The further technical scheme is as follows: and one part of the lean oil slurry is conveyed to the drum screen through a reuse water pump for spraying cleaning materials, and the other part of the lean oil slurry is conveyed to the sand-water separator for diluting the viscosity of the slurry.
The further technical scheme is as follows: feed arrangement includes feeder hopper and second screw conveyer, the feeder hopper is used for concentrating and accomodates kitchen garbage, second screw conveyer's one end sets up the bottom of feeder hopper, the other end lets in the starting point end of the inside drum sieve of degritting edulcoration all-in-one.
The further technical scheme is as follows: be equipped with the agitator in the mixing tank, the agitator is connected with the corresponding motor that is used for controlling the agitator work.
The utility model has the advantages that:
1. the sand-water separator is arranged in the impurity removal stage, so that the situation that fragile heavy materials such as shells and glass are difficult to separate after being crushed is avoided, the requirement on a rear-end crusher is low due to the process of removing sand firstly, the crusher can use a curve type crusher with a smaller volume, the installation space is saved, and the blockage is not easy to occur; an oil extraction process consisting of an oil separation tank, a mixing tank and a three-phase centrifuge is adopted, lean oil slurry at the lower part of the oil separation tank is heated and then sprayed back to a separation and impurity removal working section, a large amount of spraying is carried out to clean organic matters and grease adhered to coarse impurities into a liquid phase, and grease loss in an impurity removal stage is effectively reduced;
2. by adopting the combined process of the oil separating tank, the mixing tank and the three-phase centrifuge, a large amount of reclaimed water can be recycled, but the load of the centrifuge cannot be increased, and the power consumption of the three-phase centrifuge is saved.
Drawings
The invention will be further described with reference to the following drawings and examples:
fig. 1 is a schematic structural diagram of a kitchen waste water washing pretreatment system provided in an embodiment of the present application.
Wherein: 1. a sand and impurity removing integrated machine; 2. a drum screen; 3. a sand-water separator; 4. a discharge hopper; 5. Sand extraction spiral; 6. a first screw conveyor; 7. a slag outlet; 8. a shearing machine; 9. a fine grid feed pump; 10. a feed hopper; 11. a second screw conveyor; 12. fine grids; 13. a fine slag extruder; 14. An oil separation tank; 15. a mixing tank; 16. a recycling water pump; 17. a first steam ejector; 18. a second steam ejector; 19. a stirrer; 20. a centrifuge feed pump; 21. a three-phase centrifuge.
Detailed Description
Example (b): the application provides a kitchen garbage washing pretreatment systems, as shown in figure 1, this system includes: the device comprises a feeding device, a sand and impurity removing device, an oil separation tank 14, a mixing tank 15, a fine grid 12, a fine slag extruder 13 and a three-phase centrifuge 21.
The feeding device conveys the kitchen waste to the sand and impurity removing device.
The sand and impurity removing device comprises a sand and impurity removing integrated machine 1, a sand lifting screw 5, a first screw conveyer 6, a shearing machine 8 and a fine grid feeding pump 9; the sand and impurity removing integrated machine 1 comprises a drum screen 2, a sand-water separator 3 and a discharge hopper 4; the upper part of the sand and impurity removing integrated machine 1 is provided with a rotary screen 2; the starting end of the drum screen 2 is lower than the finishing end, and the drum screen 2 is provided with a screen hole with a first preset size; the lower part of the starting end of the drum screen 2 is provided with a sand-water separator 3, and the lower part of the finishing end of the drum screen 2 is provided with a slag outlet 7; the discharge hopper 4 is arranged at the lower part of the drum screen 2 and is arranged side by side with the sand-water separator 3; a first end of the sand extracting screw 5 is arranged at the bottom of the sand-water separator 3, a second end of the sand extracting screw 5 is arranged above the first end of the first screw conveyer 6, a slag discharging point is arranged below the second end of the first screw conveyer 6, and a slag discharging hole 7 is arranged above the first screw conveyer 6; the first end of the sand extracting screw 5 is lower than the second end of the sand extracting screw 5, and the first end of the first screw conveyer 6 is lower than the second end of the first screw conveyer 6; the bottom of the discharge hopper 4 is connected with a shearing machine 8 and a thin grating feeding pump 9 in sequence.
The kitchen waste is conveyed from the starting point end of the drum screen 2 to enter, impurities larger than screen holes of the drum screen 2 reach a slag outlet 7 along with the rotation of the drum screen 2, the impurities are discharged to a first spiral conveyer 6 from the slag outlet 7, undersize of the drum screen 2 enters a sand-water separator 3, heavy substances at the bottom of the undersize are lifted and output to the first spiral conveyer 6 by a sand lifting spiral 5, organic slurry on the upper portion of the undersize overflows to a discharge hopper 4, and the organic slurry is crushed to be below a second preset size by a shearing machine 8 and then is conveyed to a fine grid 12 by a fine grid feeding pump 9 to be subjected to solid-liquid separation.
Illustratively, the screen holes of the drum screen 2 are about 50mm, and large impurities larger than 50mm on the screen reach the slag outlet 7 along with the rotation of the drum screen 2, are discharged to the first screw conveyor 6 from the slag outlet 7, and solid slag at the conveying end point of the first screw conveyor 6 is collected together and collected to the slag outlet point. The undersize material enters a sand-water separator 3, heavy materials such as glass, metal, gravel, shells, bones and the like are lifted by a sand lifting screw 5 (shaftless screw) at the bottom of the sand-water separator 3 and output to a first screw conveyor 6, organic slurry at the upper part overflows to a discharge hopper 4, is discharged from the bottom of the discharge hopper 4, is crushed to below about 8mm by a shearing machine 8, and is conveyed to a fine grid of 1mm by a fine grid feeding pump 9 for solid-liquid separation.
The filtrate separated by the fine grid 12 enters an oil separation tank 14, and the separated solid slag enters a fine slag extruder 13.
The oil separation tank 14 and the mixing tank 15 are adjacently arranged, and the spacing partition plate between the oil separation tank 14 and the mixing tank 15 is lower than peripheral plates on the periphery; the oil separation tank 14 is provided with a first steam ejector 17 for heating the filtrate to float the grease, the rich oil slurry on the upper part of the oil separation tank 14 overflows into the mixing tank 15, and the lean oil slurry on the lower part is conveyed to the sand and impurity removal integrated machine 1 through a reuse water pump 16.
Illustratively, a first steam ejector 17 in the oil separation tank 14 performs steam jet heating to heat the kitchen slurry to about 40 ℃, oil in the slurry floats upwards, oil-rich slurry on the upper part of the oil separation tank 14 overflows into the mixing tank 15, and oil-poor slurry on the lower part is sent to the sand and impurity removal integrated machine 1 by the reuse water pump 16.
Optionally, a part of the lean slurry is conveyed to the drum screen 2 through the reuse water pump 16 for spraying and cleaning the material so as to perform hydraulic cleaning on the material in the drum screen 2, and the other part of the lean slurry is conveyed to the sand-water separator 3 for diluting the viscosity of the slurry, reducing the viscosity of the slurry in the sand-water separator 3 and facilitating sand separation.
The oil-containing filtrate pressed out by the fine residue extruder 13 enters the mixing tank 15 and is mixed with the oil-rich slurry overflowing to the mixing tank 15 from the upper part of the oil separation tank 14.
The solid residue separated by the fine grid 12 is squeezed by a fine residue extruder 13, the squeezed oil-containing filtrate enters a mixing tank 15, is mixed with the oil-rich slurry overflowing from the oil separation tank 14, is directly injected by steam by a second steam injector 18 and heated to about 80 ℃, and is pumped to a three-phase centrifuge 21 for oil extraction. The solid slag squeezed by the fine slag extruder 13 is collected to a slag tapping point.
The mixing tank 15 is provided with a second steam ejector 18 for heating the mixed slurry steam by direct injection and pumping the heated mixed slurry steam to a three-phase centrifuge 21 through a centrifuge feed pump 20 for oil extraction.
Solid slag separated by the three-phase centrifuge 21 is output to a slag discharging point through a screw, wastewater is sent to a sewage treatment system, and swill oil is recycled.
Optionally, feed arrangement includes feeder hopper 10 and second screw conveyer 11, and feeder hopper 10 is used for concentrating and accomodates kitchen garbage, and the one end setting of second screw conveyer 11 is in the bottom of feeder hopper 10, and the other end lets in the starting point end of the inside drum sieve 2 of desanding edulcoration all-in-one 1.
The collected and transported kitchen waste firstly enters a feed hopper 10 and is sent into the sand and impurity removing integrated machine 1 through a second screw conveyor 11 at the bottom of the feed hopper 10.
Optionally, a stirrer 19 is arranged in the mixing tank 15, and the stirrer 19 is connected with a corresponding motor for controlling the stirrer 19 to work. The liquid in the mixing tank 15 can be assisted in being fully mixed by the stirrer.
The sand extracting screw 5, the first screw conveyor 6, the second screw conveyor 11 and the fine slag extruder 13 in the application are respectively controlled by corresponding motors to work.
In summary, the kitchen waste washing pretreatment system provided by the application has the advantages that the sand-water separator is arranged at the impurity removal stage, so that the kitchen waste is firstly removed and then crushed, on one hand, the situation that fragile heavy substances such as shells and glass are difficult to separate after being crushed is avoided, on the other hand, the process of firstly removing sand has lower requirements on a rear-end crusher, the crusher can use a curve type crusher with smaller volume, the installation space is saved, and the blockage is difficult; the oil extraction process consisting of the oil separation tank, the mixing tank and the three-phase centrifuge is adopted, lean oil slurry at the lower part of the oil separation tank is heated and then sprayed back to the separation and impurity removal working section, a large amount of spraying is carried out to clean organic matters and grease adhered to coarse impurities into a liquid phase, and grease loss in the impurity removal stage is effectively reduced.
In addition, by adopting the combined process of the oil separating tank, the mixing tank and the three-phase centrifuge, a large amount of reclaimed water can be recycled, but the load of the centrifuge cannot be increased, and the power consumption of the three-phase centrifuge is saved. .
The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying a number of the indicated technical features. Thus, a defined feature of "first", "second", may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (4)
1. The utility model provides a kitchen garbage washing pretreatment systems which characterized in that includes: the device comprises a feeding device, a sand and impurity removing device, an oil separation tank, a mixing tank, a fine grid, a fine slag extruder and a three-phase centrifuge;
the feeding device conveys the kitchen waste to the sand and impurity removing device;
the sand and impurity removing device comprises a sand and impurity removing integrated machine, a sand lifting screw, a first screw conveyor, a shearing machine and a fine grid feeding pump; the sand and impurity removing integrated machine comprises a drum screen, a sand-water separator and a discharge hopper; the upper part of the sand and impurity removing integrated machine is provided with the drum screen; the starting end of the drum screen is lower than the finishing end, and the drum screen is provided with a screen hole with a first preset size; the sand-water separator is arranged on the lower part of the starting end of the drum screen, and a slag outlet is arranged on the lower part of the finishing end of the drum screen; the discharge hopper is arranged at the lower part of the drum screen and is arranged side by side with the sand-water separator; the first end of the sand extracting spiral is arranged at the bottom of the sand-water separator, the second end of the sand extracting spiral is arranged above the first end of the first spiral conveyer, a slag discharging point is arranged below the second end of the first spiral conveyer, and the slag discharging port is arranged above the first spiral conveyer; the first end of the sand lifting screw is lower than the second end of the sand lifting screw, and the first end of the first spiral conveyor is lower than the second end of the first spiral conveyor; the bottom of the discharge hopper is sequentially connected with the shearing machine and the fine grid feeding pump;
conveying the kitchen waste from the starting point end of the drum screen, conveying impurities larger than screen holes of the drum screen to the slag outlet along with the rotation of the drum screen, discharging the impurities to the first spiral conveyor from the slag outlet, conveying undersize of the drum screen to the sand-water separator, lifting heavy substances at the bottom of the undersize to the first spiral conveyor by the sand lifting spiral, overflowing organic slurry on the upper part of the undersize to the discharge hopper, crushing the organic slurry to be below a second preset size by the shearing machine, and conveying the organic slurry to the fine grid by the fine grid feeding pump for solid-liquid separation;
the filtrate separated by the fine grid enters the oil separation tank, and the separated solid slag enters the fine slag extruder;
the oil separation tank and the mixing tank are adjacently arranged, and a separation baffle between the oil separation tank and the mixing tank is lower than peripheral plates on the periphery; the oil separation tank is provided with a first steam ejector and used for heating filtrate to enable grease to float upwards, rich oil slurry on the upper portion of the oil separation tank overflows into the mixing tank, and lean oil slurry on the lower portion of the oil separation tank is conveyed to the sand and impurity removing integrated machine through a reuse water pump;
oil-containing filtrate squeezed by the fine slag extruder enters the mixing tank and is mixed with oil-rich slurry overflowing to the mixing tank from the upper part of the oil separation tank;
the mixing tank is provided with a second steam ejector and is used for directly injecting and heating mixed slurry steam and then pumping the mixed slurry steam to the three-phase centrifugal machine for oil extraction.
2. The kitchen waste water washing pretreatment system according to claim 1, wherein a part of the lean slurry is conveyed to the drum screen through a reuse water pump for spraying cleaning materials, and the other part of the lean slurry is conveyed to the sand-water separator for diluting slurry viscosity.
3. The kitchen waste washing pretreatment system according to claim 1, wherein the feeding device comprises a feeding hopper and a second spiral conveyor, the feeding hopper is used for collecting kitchen waste, one end of the second spiral conveyor is arranged at the bottom of the feeding hopper, and the other end of the second spiral conveyor is communicated with a starting point end of a drum screen inside the sand and impurity removing all-in-one machine.
4. The kitchen waste water washing pretreatment system according to any one of claims 1 to 3, wherein a stirrer is arranged in the mixing tank, and the stirrer is connected with a corresponding motor for controlling the stirrer to work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022085560.5U CN213436277U (en) | 2020-09-22 | 2020-09-22 | Kitchen waste washing pretreatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022085560.5U CN213436277U (en) | 2020-09-22 | 2020-09-22 | Kitchen waste washing pretreatment system |
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| CN213436277U true CN213436277U (en) | 2021-06-15 |
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| CN202022085560.5U Active CN213436277U (en) | 2020-09-22 | 2020-09-22 | Kitchen waste washing pretreatment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114101283A (en) * | 2021-11-29 | 2022-03-01 | 上海康恒环境股份有限公司 | Kitchen waste treatment process and device |
| CN114873836A (en) * | 2022-03-14 | 2022-08-09 | 河南沃克曼建设工程有限公司 | Kitchen slurry oil extraction system and processing method |
-
2020
- 2020-09-22 CN CN202022085560.5U patent/CN213436277U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114101283A (en) * | 2021-11-29 | 2022-03-01 | 上海康恒环境股份有限公司 | Kitchen waste treatment process and device |
| CN114873836A (en) * | 2022-03-14 | 2022-08-09 | 河南沃克曼建设工程有限公司 | Kitchen slurry oil extraction system and processing method |
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Effective date of registration: 20230424 Address after: Room D100-168, 1st Floor, Building D, Building 1-8, No. 2 Shangdi Information Road, Haidian District, Beijing, 100000 Patentee after: Yousaibo International Ecological Technology (Beijing) Co.,Ltd. Address before: Room d2008, Suzhou center, 215000 Suzhou Industrial Park, Jiangsu Province Patentee before: SUZHOU CLEAR INDUSTRY Co.,Ltd. |
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Effective date of registration: 20230809 Address after: Room 2008, Building D, Suzhou Central Plaza Office Building, Suzhou Industrial Park, Jiangsu Province, 215000 Patentee after: SUZHOU CLEAR INDUSTRY Co.,Ltd. Address before: Room D100-168, 1st Floor, Building D, Building 1-8, No. 2 Shangdi Information Road, Haidian District, Beijing, 100000 Patentee before: Yousaibo International Ecological Technology (Beijing) Co.,Ltd. |