CN105313362A - Device and method for solid-liquid separation of dry cleaning faeces of livestock - Google Patents

Device and method for solid-liquid separation of dry cleaning faeces of livestock Download PDF

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Publication number
CN105313362A
CN105313362A CN201510783308.2A CN201510783308A CN105313362A CN 105313362 A CN105313362 A CN 105313362A CN 201510783308 A CN201510783308 A CN 201510783308A CN 105313362 A CN105313362 A CN 105313362A
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China
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solid
liquid
liquid separation
livestock
separation
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CN201510783308.2A
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CN105313362B (en
Inventor
齐自成
张进凯
褚斌
孙立刚
李寒松
韩梦龙
李福欣
高亮
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SHANDONG DOUBLE WIN AGRICULTURE AND ANIMAL HUSBANDRY MACHINERY Co Ltd
Shandong Academy of Agricultural Machinery Sciences
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SHANDONG DOUBLE WIN AGRICULTURE AND ANIMAL HUSBANDRY MACHINERY Co Ltd
Shandong Academy of Agricultural Machinery Sciences
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Priority to CN201510783308.2A priority Critical patent/CN105313362B/en
Publication of CN105313362A publication Critical patent/CN105313362A/en
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Abstract

The invention relates to a device and method for solid-liquid separation of dry cleaning faeces of livestock. The device mainly comprises a shell. A breaking unit, a feeding unit and a solid-liquid separation unit are sequentially arranged in the shell from top to bottom. The breaking unit comprises a main shaft. The main shaft is fixedly connected with a plurality of rotary teeth used for stirring and breaking mucosa on the surface of the faeces. The solid-liquid separation unit comprises a first drive motor fixedly connected to the shell, and the first drive motor drives a solid-liquid separation packing auger to rotate through a first speed reducer. After the faeces enters the breaking unit, the faeces passes through the feeding unit to be fed to the solid-liquid separation unit for solid-liquid separation, and after separation, liquid flows out of a water outlet end, and solids flow out of a discharging end. According to the device, a brand-new structure is designed, and under the condition that a small amount of water is added for the first time, and a small amount of waste water is utilized during subsequent circulation, efficient solid-liquid separation of the dry cleaning faeces of the livestock can be achieved.

Description

A kind of livestock and poultry do clear Night Soil Solid and Liquid Separation Equipment and method
Technical field
The present invention relates to agricultural equipment correlative technology field, specifically, relate to a kind of livestock and poultry and do clear Night Soil Solid and Liquid Separation Equipment and method.
Background technology
Along with the scale of aquaculture is fast-developing, significantly increasing of livestock and poultry quantity will produce a large amount of feces of livestock and poultry.Current aquaculture cleaning feces of livestock and poultry generally adopts water to rush (bubble) excrement mode, consumes a large amount of water resources, causes a large amount of swine manure wastewater discharges.The feces of livestock and poultry that aquaculture produces has become the important sources of environmental pollution.
Carry out harmless treatment to feces of livestock and poultry, realizing recycling is the effective way solving the pollution problem such as air, water resource, farmland that feces of livestock and poultry brings.
Separation of Solid and Liquid equipment is to feces of livestock and poultry harmless treatment, realizes the key equipment of recycling.Existing solid-liquid separating equipment is mainly for the Separation of Solid and Liquid of the feces of livestock and poultry of water punching (bubble) excrement mode, and feeding easily produces to build bridge blocks, and solid output object moisture content is high simultaneously, automaticity is low, efficiency is low.
Current existing solid-liquid separating machine adopts normal spiral extruding, outlet pressure weight adjust structure, is applied in the excrement solid-liquid separating solids output object moisture content of water punching (bubble) excrement mode more than 60%.Solid aqueous rate is high limits the harmless treatment of solid output object and follow-up recycling approach.
Current existing livestock and poultry excrement solid-liquid separation equipment majority adopts submerged pump to pump into charging, and dry clear ight soil cannot directly pump into.Again because one deck mucous membrane is wrapped up on dry clear ight soil top layer, existing solid-liquid separating machine does not destroy the mechanism of this layer of mucous membrane before extrusion, causes the fluid separation applications rate in ight soil very low.Therefore, existing livestock and poultry excrement solid-liquid separation equipment is only applicable to large water gaging punching (bubble) excrement process to ight soil water content up to the mode of hundred 90% or more, causes great lot of water resources to waste.Again because ight soil moisture content before Separation of Solid and Liquid is too high, determine the argol after Separation of Solid and Liquid in itself and just still there is higher moisture content.
Therefore, how to design a kind of device, realize the Separation of Solid and Liquid that livestock and poultry do clear ight soil, and realize in separation process adding water less or cycling utilization of wastewater, both the high efficient solid and liquid separation of ight soil had been realized, again can effective saving water resource, be the problem that those skilled in the art need solution badly.
Summary of the invention
The object of the invention is, for overcoming above-mentioned the deficiencies in the prior art, to provide a kind of livestock and poultry to do clear Night Soil Solid and Liquid Separation Equipment.This device, by designing brand-new structure, achieves the high efficient solid and liquid separation of feces of livestock and poultry.
In order to reach above-mentioned purpose, the present invention adopts following technical scheme:
A kind of livestock and poultry do clear Night Soil Solid and Liquid Separation Equipment, comprise shell, are provided with damaged unit, feed unit and solid-liquid separation unit successively from top to bottom in shell;
Described damaged unit comprises main shaft, main shaft is fixedly connected with multiple take into account stir with damaged ight soil surface mucosa revolve tooth;
Described solid-liquid separation unit comprises the first drive motors be fixedly connected on shell, and the first drive motors drives Separation of Solid and Liquid auger to rotate by the first reductor;
After ight soil enters from damaged unit, be fed to solid-liquid separation unit carry out Separation of Solid and Liquid through feed unit, after being separated, fluid flows out from water side, and solid flows out from discharge end.
Preferably, Separation of Solid and Liquid auger is reducing variable-pitch auger structure, and the diameter of Separation of Solid and Liquid auger and pitch diminish to the other end gradually from the one end accepting reductor power.
Preferably, described damaged unit comprises agitator tank, and agitator tank top has the second drive motors and dog-house that vertically arrange, and the second drive motors drives main shaft to rotate.
Preferably, described feed unit comprises the 3rd drive motors being positioned at also horizontally set bottom agitator tank, and the 3rd drive motors drives the quantitative feeding auger of agitator tank inside to rotate by the second reductor.
Preferably, have baffle plate outside described discharge end, baffle plate side is connected with screw rod with spring successively, and screw rod accepts to regulate the torque of motor to realize own rotation, and the other end of screw rod is suitable by screw thread pair and motor, and adjustment motor is installed on electric machine support.
Preferably, moisture transducer is embedded with in described baffle plate.
Preferably, described shell is supported by frame, and frame is provided with electric-control system, moisture transducer by signal transmission to electric-control system, and the motor rotation that electric control system controls is all.
Preferably, have sound plate rack in described shell, sound plate rack is fixedly connected with multiple still, be placed with moving plate between adjacent still, Separation of Solid and Liquid auger is through all moving plates and still.
Preferably, described baffle plate is pyramidal structure.
While organization plan is provided, present invention also offers a kind of method utilizing above-mentioned solid-liquid separating equipment to carry out fowl and animal excrement Separation of Solid and Liquid, comprise the steps:
A, the distance needing between controllable register and Separation of Solid and Liquid auger according to design;
Enter damaged unit after B, fowl and animal excrement mix with water to stir;
Mixture after stirring is delivered to solid-liquid separation unit by C, feed unit;
D, the first drive motors start, and mixture, by Separation of Solid and Liquid auger conveying compression, completes Separation of Solid and Liquid.
The invention has the beneficial effects as follows:
(1) in the process that Separation of Solid and Liquid auger rotates, liquid in ight soil is flowed out by the gap between moving plate, still, during this, moving plate can rotate along with ight soil and move, due to the mobility of moving plate, both ensure that the extruding of liquid in ight soil was separated, solve again the drawback that fixed screen mesh easily blocks ight soil, decrease the frequency of screen cloth cleaning, reduce the difficulty of cleaning;
(2) moisture transducer is embedded in baffle plate, utilizes ight soil dielectric constant and the linear relationship existing for ight soil volume moisture content, measures the solids moisture content of the extrusion chamber port of export in real time;
(3) electric-control system not only has and conventional to open, stop function, can also the data passed back of real-time reception moisture transducer, utilizes controller to process in real time data, and exports the signal of telecommunication and control motor;
(4) compressed by the pressure of stage clip outside discharging opening baffle plate, the compression degree of stage clip is by the rotation of servomotor, control the movement of screw rod, by the mobile compression degree controlling stage clip of screw rod, the cracking pressure of final change striker plate, by monitoring the moisture content of ight soil, controls the cracking pressure of striker plate in real time, realize the control that excrement solid-liquid is separated water content, and realize the Automated condtrol on similar solid-liquid separating equipment first.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of damaged unit in the present invention;
Fig. 3 is the relativeness figure of moving plate in the present invention, still and Separation of Solid and Liquid auger;
Fig. 4 is the cooperation figure of Compress Spring in the present invention;
In figure 1, first drive motors, 2, first reductor, 3, 3rd drive motors, 4, input room, 5, second reductor, 6, quantitative feeding auger, 7, agitator tank, 8, dog-house, 9, extrusion chamber, 10, moving plate, 11, still, 12, baffle plate, 13, moisture transducer, 14, regulate motor, 15, Compress Spring, 16, frame, 17, delivery hose, 18, delivery port, 19, Separation of Solid and Liquid auger, 20, electric-control system, 21, second drive motors, 22, revolve tooth, 23, screw rod, 24, shell, 25, discharging opening, 26, electric machine support, 27, sound plate rack, 28, revolve tooth axle, 29, bolt group, 30, link.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment: a kind of livestock and poultry do clear Night Soil Solid and Liquid Separation Equipment, its structure as shown in Figure 1: comprise shell 24, be provided with damaged unit, feed unit and solid-liquid separation unit successively from top to bottom in shell 24, the side of solid-liquid separation unit is pressure regulating unit.
Described pressure regulating unit comprises baffle plate 12, in order to regulate the water content of solid manure in solid-liquid separation unit.
Described solid-liquid separation unit comprises the first drive motors 1, first drive motors 1 be fixedly connected on shell 24 and drives Separation of Solid and Liquid auger 19 to rotate by the first reductor 2, and Separation of Solid and Liquid auger 19 coordinates with baffle plate 12 and realizes Separation of Solid and Liquid.Described baffle plate 12 is pyramidal structure, and shell 24 is provided with bell adaptive with it.
The baffle plate 12 of pyramidal structure, make baffle plate 12 and extrusion chamber end contact position be pyramidal structure, advantage is: can play better sealing function to extrusion chamber when one, closing; Can the release of better controlled pressure when two, opening, the effect of raising Separation of Solid and Liquid.
Described first drive motors 1 is variable-frequency motor, and the first reductor 2 is helical speed reduction gear.
In order to improve the life-span of the first reductor 2, Leakage prevention, the first reductor 2 is bolted with shell 24, adopts labyrinth seal mechanism at connecting portion, prevents the liquid in ight soil from flowing into reductor, causes reductor internal corrosion, affect equipment life.
Separation of Solid and Liquid auger 19 comprises two parts, and left part is the structure of fixed diameter and pitch, and right part is footpath variable-pitch auger structure, and left-right parts is one-body molded.The diameter of Separation of Solid and Liquid auger 19 right part and pitch diminish to the other end gradually from the one end accepting reductor power.Realize becoming large to the squeeze pressure of feces of livestock and poultry, therefore ight soil is more close to extrusion chamber end, and the pressure be subject to is larger, and assembles at end;
Shown in figure 2, damaged unit comprises agitator tank 7, and agitator tank 7 top has the second drive motors 21 of vertically arranging and dog-house 8, second drive motors 21 and drives and revolve tooth axle 28 (i.e. main shaft) rotation.Revolve tooth axle 28 to be fixedly connected with by link 30 and bolt group 29 and to revolve tooth 22.Revolve tooth 22 and rotate the stirring realizing ight soil, the fluidly shape of the mixture after stirring.Again because the edge revolving tooth has sharp edge, so revolve the mucous membrane class material that tooth 22 can also break ight soil surface.
Described feed unit comprises the 3rd drive motors the 3, three drive motors 3 being positioned at also horizontally set bottom agitator tank 7 and drives the quantitative feeding auger 6 of agitator tank 7 inside to rotate by the second reductor 5.By controlling the rotating speed of the 3rd drive motors 3, the flow that fluid ight soil enters input room 4 can be controlled, prevent ight soil in the blocking of feed end.
Described second reductor 5 is cycloidal planetary gear speed reducer.
Shown in figure 4, pressure regulating unit comprises the adjustment motor 14 be fixedly connected on shell, motor 14 is regulated to drive screw rod 23 to rotate, matched with adjustment motor 14 by screw thread pair in one end of screw rod 23, screw rod 23 other end is fixedly connected with Compress Spring 15, and Compress Spring 15 is fixedly connected with baffle plate 12.
Described adjustment motor 14 is preferably servomotor, and screw rod 23 is through the two ends of servomotor.
Moisture transducer 13 is embedded with in described baffle plate 12.
Described shell 24 is supported by frame 16, and frame 16 is provided with electric-control system 20, and moisture transducer 13 is by signal transmission to electric-control system 20, and electric-control system 20 controls all motor rotations.
Described in reference diagram 3, outside Separation of Solid and Liquid auger 19, ring set has multiple moving plate 10 and multiple still 11, and the two interval is arranged, and still 11 is fixedly connected on sound plate rack 27, and sound plate rack 27 is fixedly connected on enclosure interior.
Above-mentioned moving plate 10 and still 11 form dynamic and static lamination mesh structure.Still 11 is fixed in shell 24, and moving plate 10 is arranged in still 11 both sides, and sound sheet all has central through hole, is Separation of Solid and Liquid auger 19 in through hole.When Separation of Solid and Liquid auger 19 rotates, propelling fluid ight soil is assembled to extrusion chamber end, liquid in ight soil is flowed out by the gap between moving plate 10, still 11, during this, moving plate 10 can rotate along with ight soil and move, due to the mobility of moving plate 10, both ensure that the extruding of liquid in ight soil was separated, solved again the drawback that fixed screen mesh easily blocks ight soil, decrease the frequency of screen cloth cleaning, reduce the difficulty of cleaning.
This device is used to carry out the principle of Separation of Solid and Liquid and step is:
A, the distance needing between controllable register 12 and Separation of Solid and Liquid auger 19 according to design.
B, livestock and poultry do clear excrement and put into agitator tank 7 by dog-house 8, to add water mixing according to the ratio below 30% or 30%, and the second drive motors 21 drives and revolves tooth 22 and rotate, and by stirring, fully being mixed by ight soil, finally become flow-like with water.The moisture content of flow-like ight soil is about 80%.Can certainly be 75% or 70%.
C, startup the 3rd drive motors 3, fluid ight soil, by the impetus of quantitative feeding auger 6, enters the conveying chamber 4 of solid-liquid separating machine uniformly from right-to-left;
Start the first drive motors 1, Separation of Solid and Liquid auger 19 operates thereupon.Separation of Solid and Liquid auger 19 is fixed pitch and radius near the helical blade of conveying chamber 4 end, the main conveying fluid ight soil that plays a part enters extrusion chamber 9, after entering extrusion chamber 9, become screw extrusion structure by reducing ight soil is advanced to discharging opening 26, due to pitch and the radius of spin more and more less, and have employed the sound lamination screen cloth of innovation, fluid ight soil is constantly pushed ahead and is squeezed, and moisture oozes out from the gap between numerous dynamic and static.
Shown in figure 3: the distance between adjacent two stills 11 is constant, moving plate 10 between still 11 can move and rotate, but the maximal clearance between dynamic and static is restricted, therefore, it is possible to play good Separation of Solid and Liquid effect to fluid ight soil, the mobility of moving plate 10 also solves the susceptible to plugging shortcoming of fixed screen cloth simultaneously, decrease maintenance time, reduce maintenance cost.
The extruding force be subject at extrusion chamber end along with feces of livestock and poultry is increasing, moisture in ight soil is forced to extrude, enclosure is flowed into through sound lamination screen cloth, and flow out eventually through delivery port 18, delivery port 18 can pick out water tube hose 17, inserts the liquid into sedimentation basin, carries out nature quiescent setting, water after precipitation can reuse, with saving water resource.
Top layer liquid can directly pump into agitator tank 7, mixes, stir next time, realize recycling with dry clear ight soil.Also by isolated liquid, methane-generating pit can be injected, form methane, produce economic benefit.
At the end of extrusion chamber 9, baffle plate 12 is provided with moisture transducer 13, sensor probe inserts solid manure thing and detects water content in real time, the data of sensor pass electric-control system 20 back, electric-control system 20 is by the rotating of moisture data control and regulation motor 14, the motion of further control screw rod 23, screw rod 23 and Compress Spring 16 link together, thus control the precommpression degree of Compress Spring 16, change the thrust of Compress Spring 16, the open-close pressure of final control baffle plate 12, achieves the adjustable of solid manure water content.
Because there is the existence of electric-control system 20, whole system realizes closed-loop control, finally realizes the control to Solid separate water content.When water content reaches preset value, the pressure of baffle plate 12 no longer increases, and baffle plate 12 is open, and ight soil draws off from equipment, and the liquid completing feces of livestock and poultry is separated with solid.
After have employed said structure, this device can realize the high efficient solid and liquid separation of poultry dung by adding water on a small quantity, and the water after being separated can recycle, avoid the punching of water in prior art (bubble) mode greatly and carry out great lot of water resources waste in night soil-treatment process and the higher problem of dejecta moisture after processing.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of embodiment, General Principle as defined herein can be without departing from the spirit or scope of the present invention, realize in other embodiments, be not described in detail the part presented with partial enlargement, for prior art, do not repeat at this.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and feature.

Claims (10)

1. livestock and poultry do a clear Night Soil Solid and Liquid Separation Equipment, it is characterized in that, comprise shell, are provided with damaged unit, feed unit and solid-liquid separation unit successively in shell under upper;
Described damaged unit comprises main shaft, main shaft is fixedly connected with multiple take into account stir with damaged ight soil surface mucosa revolve tooth;
Described solid-liquid separation unit comprises the first drive motors be fixedly connected on shell, and the first drive motors drives Separation of Solid and Liquid auger to rotate by the first reductor; After ight soil enters from damaged unit, be fed to solid-liquid separation unit carry out Separation of Solid and Liquid through feed unit, after being separated, fluid flows out from water side, and solid flows out from discharge end.
2. livestock and poultry according to claim 1 do clear Night Soil Solid and Liquid Separation Equipment, it is characterized in that, described Separation of Solid and Liquid auger is reducing variable-pitch auger structure, and the diameter of Separation of Solid and Liquid auger and pitch diminish to the other end gradually from the one end accepting reductor power.
3. livestock and poultry according to claim 1 do clear Night Soil Solid and Liquid Separation Equipment, it is characterized in that, described damaged unit comprises agitator tank, and agitator tank top has the second drive motors and dog-house that vertically arrange, and the second drive motors drives main shaft to rotate.
4. livestock and poultry according to claim 1 do clear Night Soil Solid and Liquid Separation Equipment, it is characterized in that, described feed unit comprises the 3rd drive motors being positioned at also horizontally set bottom agitator tank, and the 3rd drive motors drives the quantitative feeding auger of agitator tank inside to rotate by the second reductor.
5. livestock and poultry according to claim 1 do clear Night Soil Solid and Liquid Separation Equipment, it is characterized in that, outside described discharge end, there is baffle plate, baffle plate side is connected with screw rod with spring successively, screw rod accepts to regulate the torque of motor to realize own rotation, the other end of screw rod is suitable with adjustment motor by screw thread pair, regulates motor to be installed on electric machine support.
6. livestock and poultry according to claim 5 do clear Night Soil Solid and Liquid Separation Equipment, it is characterized in that, are embedded with moisture transducer in described baffle plate.
7. livestock and poultry according to claim 1 do clear Night Soil Solid and Liquid Separation Equipment, it is characterized in that, described shell is supported by frame, and frame is provided with electric-control system, moisture transducer by signal transmission to electric-control system, and the motor rotation that electric control system controls is all.
8. livestock and poultry according to claim 1 do clear Night Soil Solid and Liquid Separation Equipment, it is characterized in that there is in described shell sound plate rack, sound plate rack is fixedly connected with multiple still, be placed with moving plate between adjacent still, Separation of Solid and Liquid auger is through all moving plates and still.
9. livestock and poultry according to claim 5 do clear Night Soil Solid and Liquid Separation Equipment, it is characterized in that, described baffle plate is pyramidal structure.
10. utilize claim 5 or the solid-liquid separating equipment described in 6 or 9 to carry out a method for fowl and animal excrement Separation of Solid and Liquid, comprise the steps:
A, the distance needing between controllable register and Separation of Solid and Liquid auger according to design;
Enter damaged unit after B, fowl and animal excrement mix with water to stir;
Mixture after stirring is delivered to solid-liquid separation unit by C, feed unit;
D, the first drive motors start, and mixture, by Separation of Solid and Liquid auger conveying compression, completes Separation of Solid and Liquid.
CN201510783308.2A 2015-11-13 2015-11-13 A kind of livestock and poultry do clear Night Soil Solid and Liquid Separation Equipment and method Active CN105313362B (en)

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Cited By (10)

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CN105599337A (en) * 2016-03-24 2016-05-25 桂林航天工业学院 Efficient waste solid-liquid separator
CN108749075A (en) * 2018-06-11 2018-11-06 晏子俊 A kind of plunger type solid-liquid separating machine
WO2018229339A1 (en) * 2017-06-13 2018-12-20 Demeca Oy Separation apparatus and method for adjusting the pumping speed of the separation apparatus feed pump
CN109174908A (en) * 2018-09-03 2019-01-11 潘路希 A kind of refuse disposal installation for environmental protection
CN111037974A (en) * 2019-11-27 2020-04-21 安徽天健环保股份有限公司 Extrusion system for harmless separation of swill and extrusion method thereof
CN111113984A (en) * 2019-11-27 2020-05-08 安徽天健环保股份有限公司 Stranding cage discharging system for swill separation and discharging method thereof
CN112693150A (en) * 2020-12-10 2021-04-23 山东德畅环境科技有限公司 Spiral extrusion formula beasts and birds liquid dung solid-liquid separation machine
CN112973853A (en) * 2021-04-07 2021-06-18 陈军玲 Organic solid waste recycling treatment device for farm
CN113002046A (en) * 2021-03-03 2021-06-22 林美珊 Spiral extrusion type solid-liquid separator
CN113831161A (en) * 2021-11-25 2021-12-24 深圳市华研环保科技有限公司 Integrated equipment is made to beasts and birds excrement and urine fertilizer

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CN204547111U (en) * 2015-02-07 2015-08-12 象山康丽针织厂 A kind of fish gill formula dewatering machine
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105599337A (en) * 2016-03-24 2016-05-25 桂林航天工业学院 Efficient waste solid-liquid separator
WO2018229339A1 (en) * 2017-06-13 2018-12-20 Demeca Oy Separation apparatus and method for adjusting the pumping speed of the separation apparatus feed pump
CN108749075A (en) * 2018-06-11 2018-11-06 晏子俊 A kind of plunger type solid-liquid separating machine
CN109174908A (en) * 2018-09-03 2019-01-11 潘路希 A kind of refuse disposal installation for environmental protection
CN111037974A (en) * 2019-11-27 2020-04-21 安徽天健环保股份有限公司 Extrusion system for harmless separation of swill and extrusion method thereof
CN111113984A (en) * 2019-11-27 2020-05-08 安徽天健环保股份有限公司 Stranding cage discharging system for swill separation and discharging method thereof
CN111037974B (en) * 2019-11-27 2021-09-10 安徽天健环保股份有限公司 Extrusion system for harmless separation of swill and extrusion method thereof
CN112693150A (en) * 2020-12-10 2021-04-23 山东德畅环境科技有限公司 Spiral extrusion formula beasts and birds liquid dung solid-liquid separation machine
CN113002046A (en) * 2021-03-03 2021-06-22 林美珊 Spiral extrusion type solid-liquid separator
CN112973853A (en) * 2021-04-07 2021-06-18 陈军玲 Organic solid waste recycling treatment device for farm
CN113831161A (en) * 2021-11-25 2021-12-24 深圳市华研环保科技有限公司 Integrated equipment is made to beasts and birds excrement and urine fertilizer

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