CN212128011U - Drum-type aerobic composting back-mixing device - Google Patents
Drum-type aerobic composting back-mixing device Download PDFInfo
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- CN212128011U CN212128011U CN202020853288.8U CN202020853288U CN212128011U CN 212128011 U CN212128011 U CN 212128011U CN 202020853288 U CN202020853288 U CN 202020853288U CN 212128011 U CN212128011 U CN 212128011U
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The utility model discloses a drum-type good oxygen compost back mixing device, including rotating the barrel, rotate the barrel and connect a drive arrangement to realize pivoting through this drive arrangement, rotate the barrel and follow feed inlet to certain angle that inclines downwards of discharge gate orientation level, rotate the internal perisporium of barrel and be fixed with a plurality of flitchs, a plurality of flitchs be two sets of at least along rotating barrel circumference and distributing, the flitch is along rotating barrel axial interval evenly distributed in every group, the flitch crisscross setting each other of each across, the flitch comprises bottom plate and baffle, the one end of bottom plate is fixed with the internal perisporium of rotation barrel, the other end of bottom plate is towards the supplied materials orientation and is towards rotating barrel center slope, inclination is 45 ~ 65. The utility model discloses utilize the copying board, promote the high-efficient backward flow of rear end thoroughly decomposed material to the reactor front end to vaccinate fresh materials, increase the microorganism abundance in the fresh materials, promote organic waste's quick degradation, thereby effectively improve compost efficiency, improve product quality.
Description
Technical Field
The utility model belongs to the technical field of solid waste aerobic composting reaction device, in particular to a drum-type aerobic composting back-mixing device.
Background
With the rapid development of economy, the production of urban and rural domestic garbage, garden garbage, livestock and poultry manure, agricultural waste and other solid wastes in China is increased sharply, wherein the annual production of urban and rural (including rural) domestic garbage exceeds 4 hundred million tons, and the annual yield of crop straw waste reaches 2 million tons. At present, the solid wastes are mainly incinerated or landfilled hygienically. The smoke generated by burning can pollute the atmospheric environment, particularly dioxin has high toxicity, belongs to persistent organic pollutants, has long retention time in the environment, is stable and not easy to decompose, and in addition, the burning fly ash belongs to dangerous waste, has high treatment difficulty and high cost. The sanitary landfill occupies a large amount of land resources, the resource waste is serious, the risk of groundwater pollution caused by leachate leakage exists, the leachate treatment difficulty is high, the cost is high, and in addition, a plurality of towns in China are difficult to select new landfill sites at present. Composting of organic wastes, which is one of the oldest organic waste treatment technologies, has been rapidly developed with the recent increase in the popularization and application of green agriculture, organic vegetables and organic agricultural products and the demand of organic fertilizers.
Composting organic waste, namely, realizing stabilization of organic matters under the action of aerobic microorganisms by ventilation and oxygen supply and forming a composting product. The compost is used as an agricultural organic fertilizer or a soil conditioner, so that the application amount of the fertilizer can be reduced, and soil hardening can be relieved. Aerobic composting is an effective way for realizing reduction, reclamation and harmlessness of organic wastes, has the advantages of simple method, convenient operation, low investment and operation cost and the like, and becomes a hotspot of the current organic waste treatment research. However, the time period of the traditional composting is longer, generally 30-60 d, and the time for primary fermentation and the time for secondary fermentation are respectively 10-20d above.
The compost can occupy a large compost facility space after being decomposed for a long time, and the treatment efficiency is influenced. Although the reaction efficiency can be greatly improved and the time for one-time fermentation can be shortened by the device (reactor) composting, the time is still longer, generally 7-10 days, the solid wastes are difficult to mix and stir, the materials are difficult to be uniform, and the further effective shortening of the reaction time is restricted. The existing drum-type reactor has better mixing and stirring effects, and the time of primary fermentation can be shortened to 5-7 days, but the mixing and stirring effects are only limited to the same section. As the drum reactor generally belongs to plug-flow reaction, materials in different batches are basically not mixed, rotten compost inoculation of fresh materials is difficult to realize, the compost of the fresh materials is slow to start, and the rapid humification of organic wastes is difficult to realize. Therefore, how to mix different batches of materials in the drum-type reactor, mix and inoculate the decomposed compost and the fresh materials, realize the rapid humification of the organic garbage, improve the fertilizer efficiency of the organic garbage, realize safe fertilization and the like without consuming reflux power is still the direction of research and development of technicians in the field.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a drum-type good oxygen compost reaction unit who is applicable to high-efficient backmixing of organic waste compost ization processing to improve the stirring mixed effect in the drum-type reaction unit, simultaneously, rely on the high-efficient backmixing of inside special design's copying board to realize the thoroughly decomposed material under the prerequisite that does not increase outside energy consumption, the fresh compost material of thoroughly decomposed compost inoculation, quick start fresh material compost ization realizes the quick humification of organic waste, shorten the compost cycle, reduce the production energy consumption, improve the treatment effeciency.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a drum-type aerobic composting back-mixing device comprises a rotating drum, wherein the rotating drum is connected with a driving device and realizes rotation around a shaft through the driving device, one end of the rotating drum is connected with a feeding hole, the other end of the rotating drum is connected with a discharging hole, the rotating drum horizontally inclines downwards along the direction from the feeding hole to the discharging hole by a certain angle, a plurality of shoveling plates are fixed on the inner peripheral wall of the rotating drum, the plurality of shoveling plates are at least two groups which are distributed along the circumferential direction of the rotating drum, the shoveling plates in each group are uniformly distributed along the axial direction of the rotating drum at intervals, the shoveling plates among the groups are arranged in a staggered mode, each shoveling plate comprises a bottom plate and a baffle, one end of the bottom plate is fixed on the inner peripheral wall of the rotating drum, the other end of the; the baffle is arranged on the side edge of the bottom plate so that the whole cross section of the material copying plate is L-shaped, the inner angle direction of the L-shape is the same as the rotating direction of the rotating cylinder, so that in the process that the material copying plate rotates along with the rotating cylinder, the inner angle area formed by the material copying plate can carry partial materials and the materials can fall down due to gravity when rotating to a certain angle, and the bottom plate and one end of the baffle, which is connected with the rotating cylinder, are inclined planes so as to be attached to the inner wall of the rotating cylinder; the rotating cylinder is also internally provided with a breather pipe for supplying oxygen to the interior of the rotating cylinder.
When the rotating barrel rotates, the material shoveling plate drives the materials to be fully stirred and mixed, and meanwhile, part of compost materials are carried to be conveyed to the feeding hole after rising to a certain height. The conveyed materials fall into the gap between the material shoveling plates at the opposite sides, are carried by the material shoveling plates at the opposite sides to rise again along with the rotation of the rotary cylinder, and then enter the next back mixing cycle. And through the gradual transmission of the plurality of material shoveling plate groups, the decomposed compost at the side of the discharge port of the rotary cylinder body flows back to the front end of the rotary cylinder body.
Therefore, the utility model utilizes the material copying plate arranged on the inner wall of the composting roller, does not need external reflux and stirring equipment, and utilizes the structure of the material copying plate to fully stir and mix materials, and simultaneously promotes the high-efficiency reflux of the decomposed materials at the rear end to the front end of the reactor so as to inoculate fresh materials, increase the abundance of microorganisms in the fresh materials and promote the rapid degradation of organic wastes; meanwhile, humus in the decomposed compost can be combined with an intermediate product generated by the degradation of organic matters to form more stable humus, so that the time of primary fermentation is effectively shortened, the rapid humification of organic wastes is promoted, the composting efficiency is improved, and the product quality is improved.
As optimization, two ends of the rotating cylinder are respectively connected with the first fixed cylinder and the second fixed cylinder in a sealing manner through movable joints, the feed port is formed in the upper end of the first fixed cylinder, and the discharge port is formed in the lower end of the second fixed cylinder; one end of the vent pipe penetrates through the first fixed cylinder body to be connected with the air inlet pipe, the other end of the vent pipe is fixed at the end of the second fixed cylinder body, the air outlet pipe is arranged at the upper end of the second fixed cylinder body, and the vent pipe is communicated with the air outlet pipe through the inner cavity of the second fixed cylinder body.
Therefore, the utility model discloses divide into fixed barrel and rotation barrel with the compost cylinder, fixed barrel does not rotate, pass through the sealed connection of swing joint with the rotation barrel, reaction unit's continuous operation and business turn over material problem have been solved betterly, the connection of the business turn over pipeline of also being convenient for simultaneously, reaction unit structure is simple relatively, the front end oxygen supply of breather pipe is relatively great usually, the rear end oxygen supply is relatively less, set up the inlet end of breather pipe in material feed inlet end, reaction unit has just so realized the phase-match of oxygen supply and material oxygen demand automatically.
Preferably, the vent pipe is positioned on the central axis of the rotary cylinder body, and the lower end of the peripheral wall of the vent pipe is provided with a plurality of vent holes along the axial direction.
Set up the air vent like this and can prevent that solid waste or filtration liquid from getting into in the breather pipe, avoid breather pipe or air vent to block up, improve the stability of device under the prerequisite that provides logical oxygen ability, during the implementation, can establish two rows of air vents in the inclined to 45 departments of breather pipe perisporium lower extreme both sides, two rows of air vents are along axial interval distribution.
As optimization, the outer surfaces of the first fixed cylinder body, the second fixed cylinder body and the rotating cylinder body are wrapped with heat insulation layers, and the heat insulation layers are made of rock wool, glass wool or polyurethane.
Through setting up the heat preservation and having reduced thermal giving off, ensured the time of high temperature fermentation, be favorable to realizing the quick humification and the innoxious of material, improved reaction unit's adaptability and treatment effeciency.
As optimization, the rotary cylinder body is horizontally inclined downwards by 1-2 degrees along the direction from the feed inlet to the discharge outlet.
The arrangement is favorable for conveying materials from the material inlet end to the material outlet end along with the rotation of the rotary cylinder.
As optimization, still include control system and air supply system, air supply system links to each other with the intake pipe, the breather pipe outer wall is equipped with temperature sensor, control system is connected with temperature sensor electricity and stops in order to open according to temperature sensor's feedback control air supply system.
Therefore, by arranging the control system and the gas supply system, the control system can control the start and stop of the gas supply system according to the temperature outside the ventilating pipe fed back by the temperature sensor, thereby controlling the oxygen supply condition in the rotating cylinder, completing high-temperature aerobic fermentation, realizing rapid humification, and feeding back the temperature by the temperature sensor<Ventilating at 55 deg.C for 15min, and intermittently maintaining for 45 min; when temperature is high>At 55 ℃ and<ventilating at 65 deg.C for 20min, and intermittently maintaining for 45 min; when temperature is high>At 65 deg.C, continuously ventilating with oxygen supply of 0.05-0.2 m in the vent pipe3/( min•m3Stack), the gas supply system can be the air-blower, and the control system can be PLC control system.
Preferably, two groups of pulley supporting devices are arranged at the bottoms of the two ends of the rotating cylinder body, the two groups of pulley supporting devices located at the same end are respectively located on the two sides of the rotating cylinder body, the bottom of the rotating cylinder body is abutted to the pulleys of the pulley supporting devices, and the pulley supporting devices are driven by a driving device to rotate.
Preferably, the lower end of the second fixed cylinder is further connected with a percolate discharge pipe for discharging percolate generated by composting.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the present invention at the location of a sheave support;
FIG. 3 is a schematic structural diagram of a material copying plate in the embodiment of the present invention;
fig. 4 is a schematic structural view of a vent pipe in an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the specific implementation: referring to fig. 1 to 4, a drum-type aerobic compost back-mixing device comprises a rotating cylinder 1, wherein the rotating cylinder 1 is connected with a driving device 2 and realizes axial rotation through the driving device, one end of the rotating cylinder is connected with a feed inlet 3, the other end of the rotating cylinder is connected with a discharge outlet 4, the rotating cylinder horizontally inclines downwards along the direction from the feed inlet to the discharge outlet by a certain angle, a plurality of material copying plates 5 are fixed on the inner peripheral wall of the rotating cylinder, the plurality of material copying plates 5 are at least two groups distributed along the circumferential direction of the rotating cylinder, the material copying plates in each group are uniformly distributed along the axial direction of the rotating cylinder at intervals, and the material copying plates in each group are arranged in. The material copying plate is composed of a bottom plate and a baffle, one end of the bottom plate is fixed with the inner peripheral wall of the rotating cylinder, the other end of the bottom plate faces to the incoming material direction and inclines towards the center of the rotating cylinder, and the inclination angle is 45-65 degrees; the baffle is arranged on the side edge of the bottom plate so that the whole cross section of the shoveling plate is L-shaped, and thus the baffle and the bottom plate have the same inclination angle. The inner angle of the L shape faces the same direction as the rotating direction of the rotating cylinder, so that in the process that the shoveling plate rotates along with the rotating cylinder, the inner angle area formed by the shoveling plate can carry partial materials and the materials can fall down due to gravity when rotating to a certain angle, and the bottom plate and one end of the baffle plate, which is connected with the rotating cylinder, are inclined planes so as to be attached to the inner wall of the rotating cylinder; a breather pipe 6 for supplying oxygen to the interior of the rotary cylinder is also arranged in the rotary cylinder.
When the rotating barrel rotates, the material shoveling plate drives the materials to be fully stirred and mixed, and meanwhile, part of compost materials are carried to be conveyed to the feeding hole after rising to a certain height. The conveyed materials fall into the gap between the material shoveling plates at the opposite sides, are carried by the material shoveling plates at the opposite sides to rise again along with the rotation of the rotary cylinder, and then enter the next back mixing cycle. And through the gradual transmission of the plurality of material shoveling plate groups, the decomposed compost at the side of the discharge port of the rotary cylinder body flows back to the front end of the rotary cylinder body.
Therefore, the utility model utilizes the material copying plate arranged on the inner wall of the composting roller, does not need external reflux and stirring equipment, and utilizes the structure of the material copying plate to fully stir and mix materials, and simultaneously promotes the high-efficiency reflux of the decomposed materials at the rear end to the front end of the reactor so as to inoculate fresh materials, increase the abundance of microorganisms in the fresh materials and promote the rapid degradation of organic wastes; meanwhile, humus in the decomposed compost can be combined with an intermediate product generated by the degradation of organic matters to form more stable humus, so that the time of primary fermentation is effectively shortened, the rapid humification of organic wastes is promoted, the composting efficiency is improved, and the product quality is improved.
During implementation, the two ends of the rotary cylinder are respectively connected with the first fixed cylinder 8 and the second fixed cylinder 9 in a sealing mode through the movable joints 7, the feed port 3 is formed in the upper end of the first fixed cylinder 8, and the discharge port 4 is formed in the lower end of the second fixed cylinder 9. One end of the vent pipe 6 penetrates through the first fixed cylinder body and is connected with the air inlet pipe 10, the other end of the vent pipe is fixed at the end of the second fixed cylinder body, the air outlet pipe 11 is arranged at the upper end of the second fixed cylinder body, and the vent pipe 6 is communicated with the air outlet pipe 11 through the inner cavity of the second fixed cylinder body 9.
Therefore, the utility model discloses divide into fixed barrel and rotation barrel with the compost cylinder, fixed barrel does not rotate, pass through the sealed connection of swing joint with the rotation barrel, reaction unit's continuous operation and business turn over material problem have been solved betterly, the connection of the business turn over pipeline of also being convenient for simultaneously, reaction unit structure is simple relatively, the front end oxygen supply of breather pipe is relatively great usually, the rear end oxygen supply is relatively less, set up the inlet end of breather pipe in material feed inlet end, reaction unit has just so realized the phase-match of oxygen supply and material oxygen demand automatically.
When the rotary air cylinder is in use, the air pipe 6 is positioned on the central axis of the rotary cylinder body, and the lower end of the peripheral wall of the air pipe is provided with a plurality of air holes along the axial direction.
Set up the air vent like this and can prevent that solid waste or filtration liquid from getting into in the breather pipe, avoid breather pipe or air vent to block up, improve the stability of device under the prerequisite that provides logical oxygen ability, during the implementation, can establish two rows of air vents in the inclined to 45 departments of breather pipe perisporium lower extreme both sides, two rows of air vents are along axial interval distribution.
During implementation, the outer surfaces of the first fixed cylinder body, the second fixed cylinder body and the rotating cylinder body are all wrapped with the heat preservation layer 12, and the heat preservation layer is made of rock wool, glass wool or polyurethane.
Through setting up the heat preservation and having reduced thermal giving off, ensured the time of high temperature fermentation, be favorable to realizing the quick humification and the innoxious of material, improved reaction unit's adaptability and treatment effeciency.
When the rotary drum is implemented, the rotary drum is horizontally inclined downwards by 1-2 degrees along the direction from the feed inlet to the discharge outlet.
The material mixing device is beneficial to conveying materials to the material outlet end from the material inlet end along with the rotation of the rotating cylinder, the rotating cylinder rotates at a constant speed of 0.5 r/min-2.0 r/min, and material mixing, material conveying and uniform material air supply are realized.
During implementation, the air supply system further comprises a control system 13 and an air supply system 14, the air supply system is connected with the air inlet pipe, a temperature sensor is arranged on the outer wall of the air vent pipe, and the control system is electrically connected with the temperature sensor to control the starting and stopping of the air supply system according to the feedback of the temperature sensor.
Therefore, by arranging the control system and the gas supply system, the control system can control the start and stop of the gas supply system according to the temperature outside the ventilating pipe fed back by the temperature sensor, thereby controlling the oxygen supply condition in the rotating cylinder, completing high-temperature aerobic fermentation, realizing rapid humification, and feeding back the temperature by the temperature sensor<Ventilating at 55 deg.C for 15min, and intermittently maintaining for 45 min; when temperature is high>At 55 ℃ and<ventilating at 65 deg.C for 20min, and intermittently maintaining for 45 min; when temperature is high>At 65 deg.C, continuously ventilating with oxygen supply of 0.05-0.2 m in the vent pipe3/( min•m3Stack body)The air supply system can be a blower, and the control system can be a PLC control system.
When the pulley support device is implemented, two groups of pulley support devices 15 are arranged at the bottoms of the two ends of the rotary cylinder body, the two groups of pulley support devices located at the same end are respectively located at the two sides of the rotary cylinder body, the bottom of the rotary cylinder body is abutted to the pulleys of the pulley support devices, and the pulley support devices are driven by the driving device to rotate on the pulley support devices.
In practice, the lower end of the second fixed cylinder is also connected with a percolate discharge pipe 16 for discharging percolate generated by composting.
In the implementation process, before composting is started, the water content of the solid waste is controlled to be about 50-60%, the C/N is 20-25: 1, the feeding amount is designed according to the filling rate of a reaction device of 2/3-3/4, and when the reaction device runs, fresh organic waste enters the rotary barrel through the feeding hole 3. The rotating cylinder is inclined towards the discharge hole at an angle of 1-2 degrees. The rotating cylinder rotates at a constant speed of 0.5-2.0 r/min under the drive of a driving device 2 consisting of a transmission mechanism, a speed reducer, a motor, a frame and the like. The compost materials stay in the reactor for 3-5 days on average, high-temperature aerobic fermentation can be completed, rapid humification is realized, and the compost materials are discharged from a discharge port 14 of the reactor. The percolate resulting from the composting is discharged via a percolate discharge 16. The air intake and the clearance time in the composting process are controlled by the control system in combination with the temperature fed back by the temperature sensor, so that intelligent air intake is realized.
The above embodiments of the present invention are merely examples for illustrating the present invention and are not intended to limit the embodiments of the present invention. Variations and modifications in other variations will occur to those skilled in the art upon reading the foregoing description. Not all embodiments are exhaustive. All obvious changes or variations which are introduced by the technical solution of the present invention are still within the scope of the present invention.
Claims (7)
1. The utility model provides a drum-type good oxygen compost backmixing device, is including rotating the barrel, rotates a drive arrangement of barrel connection to realize pivoting through this drive arrangement, its characterized in that: one end of the rotating cylinder is connected with the feeding hole, the other end of the rotating cylinder is connected with the discharging hole, the rotating cylinder horizontally inclines downwards for a certain angle along the direction from the feeding hole to the discharging hole, a plurality of material copying plates are fixed on the inner peripheral wall of the rotating cylinder, the material copying plates are at least two groups of material copying plates distributed along the circumferential direction of the rotating cylinder, the material copying plates in each group are uniformly distributed along the axial direction of the rotating cylinder at intervals, the material copying plates in each group are arranged in a staggered mode, each material copying plate is composed of a bottom plate and a baffle, one end of the bottom plate is fixed with the inner peripheral wall of the rotating cylinder, the other end of the bottom plate faces the incoming; the baffle is arranged on the side edge of the bottom plate so that the whole cross section of the material copying plate is L-shaped, the inner angle direction of the L-shape is the same as the rotating direction of the rotating cylinder, so that in the process that the material copying plate rotates along with the rotating cylinder, the inner angle area formed by the material copying plate can carry partial materials and the materials can fall down due to gravity when rotating to a certain angle, and the bottom plate and one end of the baffle, which is connected with the rotating cylinder, are inclined planes so as to be attached to the inner wall of the rotating cylinder; the rotating cylinder is also internally provided with a breather pipe for supplying oxygen to the interior of the rotating cylinder.
2. The drum-type aerobic compost back mixing device as claimed in claim 1, wherein: the two ends of the rotating cylinder are respectively connected with the first fixed cylinder and the second fixed cylinder in a sealing manner through movable joints, the feed port is formed in the upper end of the first fixed cylinder, and the discharge port is formed in the lower end of the second fixed cylinder; one end of the vent pipe penetrates through the first fixed cylinder body to be connected with the air inlet pipe, the other end of the vent pipe is fixed at the end of the second fixed cylinder body, the air outlet pipe is arranged at the upper end of the second fixed cylinder body, and the vent pipe is communicated with the air outlet pipe through the inner cavity of the second fixed cylinder body.
3. A drum-type aerobic compost back mixing device as claimed in claim 1 or 2, characterized in that: the breather pipe is located the axis in the rotation barrel, and the lower extreme of the perisporium of breather pipe is equipped with a plurality of air vents along the axial direction.
4. The drum-type aerobic compost back mixing device as claimed in claim 2, wherein: the outer surfaces of the first fixed cylinder body, the second fixed cylinder body and the rotating cylinder body are all wrapped with heat insulation layers, and the heat insulation layers are made of rock wool, glass wool or polyurethane.
5. The drum-type aerobic compost back mixing device as claimed in claim 1, wherein: the rotating cylinder body is horizontally inclined downwards by 1-2 degrees along the direction from the feed inlet to the discharge outlet.
6. The drum-type aerobic compost back mixing device as claimed in claim 1, wherein: the air supply system is connected with the air inlet pipe, the outer wall of the vent pipe is provided with a temperature sensor, and the control system is electrically connected with the temperature sensor to control the start and stop of the air supply system according to the feedback of the temperature sensor.
7. The drum-type aerobic compost back mixing device as claimed in claim 1, wherein: the bottom of the two ends of the rotating cylinder body is provided with two groups of pulley supporting devices, the two groups of pulley supporting devices positioned at the same end are respectively positioned at two sides of the rotating cylinder body, the bottom of the rotating cylinder body is abutted to the pulleys of the pulley supporting devices, and the pulley supporting devices are driven by a driving device to rotate on the pulley supporting devices.
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| CN202020853288.8U CN212128011U (en) | 2020-05-20 | 2020-05-20 | Drum-type aerobic composting back-mixing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113786929A (en) * | 2021-09-16 | 2021-12-14 | 河南旭百瑞生物科技股份有限公司 | Raw materials preprocessing device for pig feed processing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113786929A (en) * | 2021-09-16 | 2021-12-14 | 河南旭百瑞生物科技股份有限公司 | Raw materials preprocessing device for pig feed processing |
| CN113786929B (en) * | 2021-09-16 | 2023-09-12 | 河南旭百瑞生物科技股份有限公司 | Raw material pretreatment device for pig feed processing |
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