Method and device for producing organic fertilizer from manure compost in dairy farm

Abstract

The invention belongs to the technical field of solid waste treatment in the livestock and poultry industry, and relates to a method and device for producing an organic fertilizer from manure compost in a dairy farm, and the method comprises the following steps: S1, carrying out solid-liquid separation on livestock and poultry manure by using solid-liquid separation equipment; s2, preparing auxiliary materials, and stirring and mixing the auxiliary materials and the excrement subjected to solid-liquid separation through a stirring device, wherein the auxiliary materials are saw dust, bran coat and lime powder; and S3, under the action of microorganisms, carrying out high-temperature fermentation to mineralize, humify and harmlessly treat organic matters. According to the method for producing the organic fertilizer from the manure compost in the dairy farm, the lime powder is added into the auxiliary materials, inorganic acid in the manure can be neutralized, the pH value of the compost is increased, growth of microorganisms and decomposition of organic matter are facilitated, meanwhile, the lime can kill germs and worm eggs, and the sanitary quality of the organic fertilizer is improved.

Description

Technical Field

[0001] The invention relates to the technical field of solid waste treatment in livestock and poultry breeding, and in particular to a method and a device for producing organic fertilizer by composting dairy manure. Background Art

[0002] The process of composting dairy manure to produce organic fertilizer is a complex but important environmental protection and resource utilization process; organic fertilizers that have been composted are rich in various nutrients and can improve soil structure, increase soil microbial activity, and improve soil fertility. Organic fertilizers are of great significance for the development of green agriculture and the promotion of sustainable agricultural development. Organic fertilizers can be used directly for fertilizing farmland, or as base fertilizers, topdressing, etc.

[0003] At present, when dairy farms use manure compost to produce organic fertilizer, auxiliary materials are generally added. The auxiliary materials are mostly agricultural waste such as straw, rice husks, mushroom residues, rice chaff, bran, etc. Although they are conducive to composting fermentation, manure contains a large number of pathogens and insect eggs, which cannot be effectively and quickly removed by conventional auxiliary materials, thus affecting the sanitary quality of the organic fertilizer. In addition, when producing organic fertilizer, auxiliary materials are generally added through a stirring device for stirring and mixing. Since manure compost is relatively viscous, auxiliary materials are generally added from the top. It is very time-consuming to evenly mix the auxiliary materials into the interior of the manure compost, and conventional compost stirring devices are difficult to meet production needs.

[0004] Therefore, it is necessary to propose a method and device for producing organic fertilizer by composting dairy manure to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a method and device for producing organic fertilizer by composting dairy manure, which can effectively solve the problems in the background technology.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A method for producing organic fertilizer by composting dairy manure, comprising the following steps:

[0008] S1: Use solid-liquid separation equipment to separate livestock and poultry manure into solid and liquid;

[0009] S2: preparing auxiliary materials and mixing the auxiliary materials with the feces after solid-liquid separation through a stirring device, wherein the auxiliary materials are sawdust, rice bran, and lime powder;

[0010] S3: Under the action of microorganisms, organic matter is mineralized, humified and rendered harmless through high temperature fermentation;

[0011] S4: Granulation and molding using granulation equipment;

[0012] S5: After granulation, drying, screening and cooling processes are carried out to obtain the final organic fertilizer.

[0013] Preferably, the solid-liquid separation equipment in S1 is a screening separator or a centrifugal separator or a filter press separator or a screw extrusion separator;

[0014] The granulation equipment used in S4 is a drum granulator, a rotary disk granulator, an extrusion granulator or a compression granulator.

[0015] Preferably, in the S3 process, the raw materials need to be supplemented with oxygen, the temperature needs to be controlled, the moisture needs to be released, and the porosity needs to be restored by turning and ventilation, and the frequency of turning the pile is 2-10 days / time, and the temperature needs to be maintained below 75°C.

[0016] Preferably, the stirring device comprises a shell, a discharge port is provided at the bottom of the shell, a manure compost feeding port is provided on one side of the upper end of the shell, and an auxiliary material feeding port is provided on the outer periphery of the top of the shell;

[0017] The shell is provided with a stirring mechanism, which includes an inner cylinder vertically fixedly arranged in the middle of the inner cavity of the shell, and the top of the inner cylinder is closed, the outer side of the inner cylinder is rotatably connected with the outer cylinder through a bearing, the upper end of the inner cylinder and the upper end of the shell are jointly vertically rotatably connected with a vertical shaft, a dragon shaft is vertically arranged on the inner side of the inner cylinder, and dragon blades are arranged on the outer side of the dragon shaft, a polygonal column is fixedly arranged on the top of the dragon shaft, and the upper end of the polygonal column extends into the interior of the vertical shaft, an outlet is arranged on the side surface of the upper end of the inner cylinder, the upper end of the vertical shaft protrudes from the top of the shell and is provided with a driven wheel, one end of the top of the shell is provided with a driving wheel meshing with the driven wheel, and one end of the top of the shell is provided with a motor for driving the driving wheel to rotate, the side walls of the outer cylinder are evenly provided with stirring horizontal blades, the top of the outer cylinder is provided with a connecting frame, and the upper end of the connecting frame is fixedly connected to the side wall of the vertical shaft, so that the rotation of the vertical shaft drives the outer cylinder and the dragon shaft to rotate synchronously.

[0018] Preferably, it also includes a cleaning and discharging mechanism, wherein the cleaning and discharging mechanism includes an inner wall cleaning mechanism for cleaning the inner wall of the shell, a Jiaolong cleaning mechanism for cleaning the Jiaolong blades, and a driving mechanism;

[0019] The inner wall cleaning mechanism comprises an inner rod movably connected to the inner side of the stirring blade, a first scraper for scraping the inner wall of the shell is vertically arranged at one end of the inner rod away from the outer cylinder, and an inclined groove is obliquely arranged on one side of the inner rod.

[0020] Preferably, the Jiaolong cleaning mechanism includes a fixing frame fixedly arranged on one side of the lower end of the inner cylinder, a second scraper is connected to the transverse sliding guide on the fixing frame, and the end of the second scraper close to the inner cylinder is adapted to the blade gap of the Jiaolong blade, the top of the end of the second scraper away from the inner cylinder is an inclined surface, and a first spring is arranged between the lower end of the second scraper and the fixing frame, and when the first spring is in the initial state, the end of the second scraper close to the inner cylinder does not protrude from the inner wall of the inner cylinder.

[0021] Preferably, the driving mechanism includes a lifting frame arranged on the top of the shell body, and a plurality of stirring horizontal blades on the same vertical plane are commonly vertically movably connected with stirring vertical blades, a convex shaft movably connected to the inclined groove is provided on one side of the stirring vertical blade, and is configured so that when the stirring vertical blade drives the convex shaft to move downward, the inner rod moves in a direction away from the inner cylinder, and a bottom ring corresponding to the second scraper and used to drive the second scraper to move laterally is commonly fixed at the bottom of the plurality of stirring vertical blades, a rotating ring is commonly fixed at the top of the plurality of stirring vertical blades, a connecting ring is provided at the top of the inner cavity of the shell, and the bottom of the connecting ring is rotatably connected to the rotating ring, columns are evenly provided on the top of the connecting ring, and the upper ends of the columns extend to the top of the shell and are fixedly connected to the lifting frame, and the columns are movably connected to the top of the shell through linear bearings, and a lifting cylinder for driving the lifting frame to rise and fall is provided at one end of the top of the shell.

[0022] Preferably, a limiting mechanism which is linked with the lifting frame and is used to limit the polygonal column is provided on the top of the shell, the limiting mechanism includes a vertical shaft which is vertically rotatably connected to the top of the polygonal column, a limiting round cap is fixedly provided on the top of the vertical shaft, a polygonal groove which is adapted to the polygonal column is vertically penetrated on the vertical shaft, the polygonal column is a regular polygonal column, and the upper end of the polygonal column extends to the polygonal groove on the vertical shaft and cooperates with the polygonal groove sliding guide, the diameter of the limiting round cap is larger than the diameter of the vertical shaft, and the projection of the limiting round cap is inscribed in the regular polygon of the projection of the polygonal column, a cylinder located outside the upper end of the vertical shaft is fixedly provided on the top of the shell, and the inner diameter of the cylinder is larger than the diameter of the vertical shaft, and the inner diameter of the cylinder The side is evenly provided with an arc-shaped support plate for limiting the limiting round cap, the side wall of the cylinder is evenly movably connected with a T-shaped rod corresponding to the arc-shaped support plate, and the outer end of the T-shaped rod is sleeved with a second spring, and one end of the T-shaped rod extends to the inner side of the cylinder and is fixedly connected to the upper end side wall of the arc-shaped support plate, one side of the lower end of the arc-shaped support plate is provided with a force plate extending to the outside of the cylinder, and the side of the lower end of the force plate facing outward is an inclined surface, the middle part of the lifting frame is annular, and the ring in the middle of the lifting frame is located on the outside of the cylinder and abuts against the outside of the force plate, and is configured so that when the ring in the middle of the lifting frame abuts against the force plate, the second spring is in a contracted state, and the arc-shaped support plate is located at the bottom of the periphery of the limiting round cap.

[0023] Preferably, blades are provided at the side surfaces of the connecting frame corresponding to the outlets, and the blades are evenly arranged along the vertical direction.

[0024] Preferably, the bottom ring surface is arc-shaped.

[0025] Compared with the prior art, the present invention provides a method and device for producing organic fertilizer by composting dairy manure, which has the following beneficial effects:

[0026] 1. The method for producing organic fertilizer by composting dairy manure can neutralize inorganic acid in manure and improve the pH value of compost by adding lime powder to auxiliary materials, which is beneficial to the growth of microorganisms and the decomposition of organic matter. At the same time, lime can kill bacteria and insect eggs, and improve the sanitary quality of organic fertilizer. The added sawdust has a water content of 15%-30% and a C / N ratio of more than 100, which can well maintain ventilation. The fermented and decomposed sawdust has comprehensive nutrition and loose texture.

[0027] 2. The device used in the method of producing organic fertilizer by composting manure in a dairy farm has a specially designed stirring device. The stirring mechanism arranged in the stirring device can convey manure upward while rotating and stirring. During this period, auxiliary materials are added from the top, so that the manure conveyed upward continuously covers the auxiliary materials, so that the auxiliary materials directly enter the interior of the manure, and then are stirred, which can improve the mixing effect and efficiency of the auxiliary materials and manure. In addition, a blade is arranged at the outlet at the upper end, which can chop the manure discharged from the upper end to facilitate the mixing of the manure. Based on the above, the cleaning and discharging mechanism can realize the simultaneous cleaning of the inner wall of the shell and the dragon blades after use, and the dragon blades can move downward, which is more convenient for the discharge of materials. The limiting mechanism is linked with the lifting and lowering of the lifting frame. When cleaning, the lifting frame moves downward to release the limit on the polygonal column, so that the polygonal column can move downward. When resetting after cleaning, the height of the polygonal column can be limited, which avoids the downward movement during subsequent stirring. The structure is compact, easy to use, and the efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of the stirring device of the present invention;

[0029] Figure 2 It is a structural schematic diagram of a partial cross section of the stirring device of the present invention;

[0030] Figure 3 is a schematic diagram of the structure of the stirring device of the present invention after the shell is removed;

[0031] Figure 4 The present invention Figure 3 Schematic diagram of the structure when the foundation is disassembled;

[0032] Figure 5It is a schematic diagram of the structure of the inner tube and the Jiaolong blade of the present invention when they are separated;

[0033] Figure 6 It is a structural schematic diagram of the outer cylinder of the present invention;

[0034] Figure 7 It is a schematic diagram of the structure of the present invention in which the vertical stirring blades, the inner rod and the horizontal stirring blades are disassembled;

[0035] Figure 8 The present invention Figure 7 A structural diagram from another perspective of the basis;

[0036] Fig. 9 It is a structural schematic diagram highlighting the Jiaolong cleaning mechanism of the present invention;

[0037] Fig.10 It is a schematic diagram of the structure of the lifting frame, the limiting mechanism, the vertical axis, and the multi-prism in the coordinated state of the present invention;

[0038] Fig.11 The present invention Fig.10 A structural diagram from another perspective of the basis;

[0039] Fig.12 It is a schematic diagram of the structure of the present invention in which the limiting mechanism, the vertical shaft and the limiting round cap are separated;

[0040] Fig.13 It is a schematic structural diagram of the present invention in which the load-bearing plate, T-shaped rod and arc-shaped support plate are in a separated state.

[0041] In the figure: 1. shell; 2. auxiliary material feeding port; 3. manure compost feeding port; 4. lifting frame; 5. discharge port; 6. outer cylinder; 7. inner cylinder; 8. stirring horizontal blade; 9. stirring vertical blade; 10. connecting frame; 11. column; 12. connecting ring; 13. rotating ring; 14. first scraper; 15. inner rod; 16. bottom ring; 17. vertical shaft; 18. outlet; 19. dragon blade; 20. multi-prism; 21. dragon shaft; 22. vertical shaft; 23. limit round cap; 24. blade; 25. inclined groove; 26. convex shaft; 27. fixed frame; 28. second scraper; 29. ​​first spring; 30. lifting cylinder; 31. motor; 32. cylinder; 33. driven wheel; 34. driving wheel; 35. force plate; 36. arc support plate; 37. T-bar; 38. second spring. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0043] Preferred Embodiments

[0044] A method for producing organic fertilizer by composting dairy manure, comprising the following steps:

[0045] Step 1: Use solid-liquid separation equipment to separate the livestock and poultry manure into solid and liquid. The solid-liquid separation equipment is a screening separator, a centrifugal separator, a filter press separation machine, or a screw extrusion separator;

[0046] Step 2: preparing auxiliary materials and mixing the auxiliary materials with the feces after solid-liquid separation through a stirring device, wherein the auxiliary materials are sawdust, rice bran, and lime powder;

[0047] The moisture content, carbon-nitrogen ratio and pH value of the raw materials also need to be adjusted to meet the fermentation needs. Generally speaking, the carbon-nitrogen ratio of the compost mixture should be maintained at 25-35:1 and the humidity should be maintained at 40-70%.

[0048] Step 3: Under the action of microorganisms, organic matter is mineralized, humified and rendered harmless through high-temperature fermentation. During this period, it is necessary to add oxygen to the raw materials, control the temperature, release moisture and restore the porosity through turning and ventilation. The frequency of turning the pile is 2-10 days / time, and the temperature needs to be kept below 75°C.

[0049] Step 4: using a granulating device to perform granulation and forming, the granulating device is a drum granulator, a rotary disk granulator, an extrusion granulator or a compression granulator;

[0050] Step 5: After granulation, drying, screening and cooling processes are carried out to obtain the final organic fertilizer.

[0051] Based on the above production method, a stirring device is also specially designed:

[0052] like Figure 1-Figure 6 , Fig.10 , Fig.11As shown, the stirring device includes a shell body 1, a discharge port 5 is provided at the bottom of the shell body 1, a manure compost feeding port 3 is provided on one side of the upper end of the shell body 1, an auxiliary material feeding port 2 is provided on the outer periphery of the top of the shell body 1, and a stirring mechanism is provided in the shell body 1, the stirring mechanism includes an inner cylinder 7 vertically fixedly arranged in the middle of the inner cavity of the shell body 1, and the top of the inner cylinder 7 is closed, the outer side of the inner cylinder 7 is rotatably connected to the outer cylinder 6 through a bearing, the upper end of the inner cylinder 7 and the upper end of the shell body 1 are vertically rotatably connected to a vertical shaft 17, a dragon shaft 21 is vertically provided on the inner side of the inner cylinder 7, dragon blades 19 are provided on the outer side of the dragon shaft 21, a polygonal column 20 is fixedly provided on the top of the dragon shaft 21, and the upper end of the polygonal column 20 extends to the inside of the vertical shaft 17, an outlet 18 is provided on the side of the upper end of the inner cylinder 7, the upper end of the vertical shaft 17 protrudes from the top of the shell body 1 and is provided with a driven wheel 33, and one end of the top of the shell body 1 is provided with a driven wheel meshing with the driven wheel 33. A driving wheel 34 is provided, and a motor 31 for driving the driving wheel 34 to rotate is provided at one end of the top of the shell 1. The side wall of the outer cylinder 6 is evenly provided with stirring blades 8. A connecting frame 10 is provided on the top of the outer cylinder 6, and the upper end of the connecting frame 10 is fixedly connected to the side wall of the vertical shaft 17, so that the rotation of the vertical shaft 17 drives the outer cylinder 6 and the dragon shaft 21 to rotate synchronously. A blade 24 is provided at the corresponding position of the side of the connecting frame 10 and the outlet 18, and the blade 24 is evenly arranged along the vertical direction. The stirring mechanism provided in the stirring device can transport feces and sewage upward while rotating and stirring, and auxiliary materials are added from the top during the period, so that the feces and sewage transported upward continuously cover the auxiliary materials, so that the auxiliary materials directly enter the interior of the feces and sewage, and then stir them, which can improve the mixing effect and efficiency of the auxiliary materials and feces and sewage, and a blade 24 is provided at the outlet 18 at the upper end, which can chop the rising and discharged feces and sewage, so as to facilitate the mixing of feces and sewage.

[0053] It also includes a cleaning and discharging mechanism, which includes an inner wall cleaning mechanism for cleaning the inner wall of the shell 1, a Jiaolong cleaning mechanism for cleaning the Jiaolong blades 19, and a driving mechanism. The cleaning and discharging mechanism can be used to clean the inner wall of the shell 1 and the Jiaolong blades 19 at the same time after use, and the Jiaolong blades 19 can be moved downward, which is more convenient for discharging materials;

[0054] like Figure 3-Figure 4 , Figure 6-Figure 8 As shown, the inner wall cleaning mechanism includes an inner rod 15 movably connected to the inner side of the stirring blade 8, and a first scraper 14 for scraping the inner wall of the shell 1 is vertically arranged at one end of the inner rod 15 away from the outer cylinder 6, and a slanted groove 25 is inclinedly arranged on one side of the inner rod 15.

[0055] like Fig. 9As shown, the Jiaolong cleaning mechanism includes a fixing frame 27 fixedly arranged on one side of the lower end of the inner cylinder 7, and a second scraper 28 is connected to the fixing frame 27 by a transverse sliding guide, and the end of the second scraper 28 close to the inner cylinder 7 is adapted to the blade gap of the Jiaolong blade 19, the top of the end of the second scraper 28 away from the inner cylinder 7 is an inclined surface, and a first spring 29 is arranged between the lower end of the second scraper 28 and the fixing frame 27, and when the first spring 29 is in the initial state, the end of the second scraper 28 close to the inner cylinder 7 does not protrude from the inner wall of the inner cylinder 7.

[0056] like Figure 1-Figure 4 , Figure 6-Figure 8 , Figure 10-11 As shown, the driving mechanism includes a lifting frame 4 arranged on the top of the shell 1, and a plurality of stirring horizontal blades 8 on the same vertical plane are commonly vertically movably connected with stirring vertical blades 9, and a convex shaft 26 movably connected to the inclined groove 25 is arranged on one side of the stirring vertical blade 9, and is configured so that when the stirring vertical blade 9 drives the convex shaft 26 to move downward, the inner rod 15 moves in a direction away from the inner cylinder 7, and a bottom ring 16 corresponding to the second scraper 28 and used to drive the second scraper 28 to move laterally is commonly fixedly arranged at the bottom of the plurality of stirring vertical blades 9, and the surface of the bottom ring 16 is arc-shaped, and a rotating ring 13 is commonly fixedly arranged on the top of the plurality of stirring vertical blades 9, and a connecting ring 12 is arranged at the top of the inner cavity of the shell 1, and the bottom of the connecting ring 12 is rotatably connected to the rotating ring 13, and columns 11 are evenly arranged on the top of the connecting ring 12, and the upper ends of the columns 11 extend to the top of the shell 1 and are fixedly connected to the lifting frame 4, and the columns 11 are movably connected to the top of the shell 1 through a linear bearing, and one end of the top of the shell 1 is provided with a lifting cylinder 30 for driving the lifting frame 4 to rise and fall.

[0057] like Figure 10-13As shown, a limiting mechanism which is linked with the lifting frame 4 and is used to limit the polygonal column 20 is provided on the top of the shell 1. The limiting mechanism includes a vertical shaft 22 which is vertically rotatably connected to the top of the polygonal column 20. A limiting round cap 23 is fixedly provided on the top of the vertical shaft 22. A polygonal groove which is adapted to the polygonal column 20 is vertically penetrated on the vertical shaft 17. The polygonal column 20 is a regular polygonal column, and the upper end of the polygonal column 20 extends to the polygonal groove on the vertical shaft 17 and cooperates with the sliding guide of the polygonal groove. The diameter of the limiting round cap 23 is larger than the diameter of the vertical shaft 22, and the projection of the limiting round cap 23 is inscribed in the regular polygon of the projection of the polygonal column 20. A cylinder 32 located outside the upper end of the vertical shaft 17 is fixedly provided on the top of the shell 1, and the inner diameter of the cylinder 32 is larger than the diameter of the vertical shaft 17. The inner side of the cylinder 32 is evenly provided with The arc-shaped support plate 36 is used to limit the limiting circular cap 23. The side wall of the cylinder 32 is evenly and movably connected with a T-shaped rod 37 corresponding to the arc-shaped support plate 36, and the outer end of the T-shaped rod 37 is sleeved with a second spring 38, and one end of the T-shaped rod 37 extends to the inner side of the cylinder 32 and is fixedly connected to the upper end side wall of the arc-shaped support plate 36. One side of the lower end of the arc-shaped support plate 36 is provided with a force plate 35 extending to the outside of the cylinder 32, and the side of the lower end of the force plate 35 facing outward is an inclined surface. The middle part of the lifting frame 4 is annular, and the ring in the middle of the lifting frame 4 is located on the outside of the cylinder 32 and abuts against the outside of the force plate 35, and is configured so that when the ring in the middle of the lifting frame 4 abuts against the force plate 35, the second spring 38 is in a contracted state, and the arc-shaped support plate 36 is located at the bottom of the outer periphery of the limiting circular cap 23. By setting a limit mechanism to be linked with the lifting and lowering of the lifting frame 4, the lifting frame 4 can move downward to release the limit on the polygonal column 20 during cleaning, so that the polygonal column 20 can move downward. When resetting after cleaning, the height of the polygonal column 20 can be limited, avoiding downward movement during subsequent stirring. The structure is compact, easy to use, and efficiency is improved.

[0058] Furthermore, with regard to the working principle of the stirring device used in the above-mentioned method for producing organic fertilizer by composting dairy manure, when in use, the manure after solid-liquid separation can be passed into the interior of the shell 1 through the manure compost feeding port 3. Initially, the arc-shaped support plate 36 is located at the bottom periphery of the limiting round cap 23 and is in a limiting support state for the limiting round cap 23. The polygonal column 20 will not move downward, and the first spring 29 is in a reset state. One end of the second scraper 28 does not enter the gap of the dragon blade 19, and the first scraper 14 does not contact the inner wall of the shell 1. Then, the motor 31 is started to drive the driving wheel 34 to rotate, and the driving wheel 34 drives the vertical shaft 17, the polygonal column 20, the dragon shaft 21, and the outer cylinder 6 through the driven wheel 33. The outer cylinder 6 drives the stirring horizontal blade 8 to rotate and stir, and the first scraper 14 and the stirring vertical blade 9 can also act as a stirring structure for stirring. During this period, the dragon blade 19 continuously transports the feces and sewage at the bottom upward, and then discharges it through the outlet 18. Since the blade 24 rotates with the outer cylinder 6, the blade 24 can chop the discharged feces and sewage. During stirring, auxiliary materials are added through the auxiliary material feeding port 2. The auxiliary materials are continuously covered by the feces and sewage transported upward and falling. The auxiliary materials enter the interior, which makes it more convenient to stir and mix evenly. After the end, the discharge port 5 is opened to discharge the feces and sewage, and then the lifting cylinder 30 is controlled to drive the lifting frame 4 to move downward. The circular ring in the middle of the lifting frame 4 moves downward and gradually separates from the force plate 35. , so that the second spring 38 gradually resets, the T-shaped rod 37 drives the arc support plate 36 to disengage from the bottom of the limiting round cap 23, the limiting round cap 23 is released, and the lifting frame 4 moves downward, which will drive the connecting ring 12, the rotating ring 13, the stirring vertical blade 9, and the bottom ring 16 to move downward as a whole through the column 11, and then the stirring vertical blade 9 drives the convex shaft 26 to move downward, and the convex shaft 26 drives the inner rod 15 to move outward under the action of the inclined groove 25, and then the first scraper 14 moves outward and contacts the inner wall of the shell 1, and the bottom ring 16 moves downward, It will cooperate with the inclined surface at the top of the second scraper 28, so that the first spring 29 is compressed, and one end of the second scraper 28 enters the gap between the dragon blades 19, and then the control motor 3 1 is reversed, the first scraper 14 scrapes the inner wall of the shell 1, and the dragon blade 19 rotates while continuously moving downward under the action of the second scraper 28, and the polygonal column 20, the vertical shaft 22, and the limiting round cap 23 move downward accordingly, the dragon blade 19 scrapes the inner wall of the inner cylinder 7, and the second scraper 28 scrapes the dragon blade 19, and it is more convenient to discharge the feces and sewage, reduces the subsequent cleaning effort, and improves the efficiency. Finally, when the dragon blade 19 is reset, it is only necessary to control the motor 31 to rotate forward. When the dragon blade 19 is completely reset, the arc support plate 36 is again moved to the bottom of the limiting round cap 23 for limiting support under the action of the circle in the middle of the lifting frame 4, and the first scraper 14 will be separated from the inner wall of the shell 1.

[0059] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A method for producing organic fertilizer by composting dairy manure, characterized in that: The following steps are involved: S1: Use solid-liquid separation equipment to separate livestock and poultry manure into solid and liquid; S2: preparing auxiliary materials and mixing the auxiliary materials with the feces after solid-liquid separation through a stirring device, wherein the auxiliary materials are sawdust, rice bran, and lime powder; S3: Under the action of microorganisms, organic matter is mineralized, humified and rendered harmless through high temperature fermentation; S4: Granulation and molding using granulation equipment; S5: After granulation, drying, screening and cooling processes are carried out to obtain the final organic fertilizer.

2. The method for producing organic fertilizer by composting dairy manure according to claim 1, characterized in that: The solid-liquid separation equipment in S1 is a screening separator, a centrifugal separator, a filter press separator, or a screw extrusion separator; The granulation equipment used in S4 is a drum granulator, a rotary disk granulator, an extrusion granulator or a compression granulator.

3. The method for producing organic fertilizer by composting dairy manure according to claim 1, characterized in that: In the S3 process, the raw materials need to be supplemented with oxygen, the temperature needs to be controlled, the moisture needs to be released, and the porosity needs to be restored through turning and ventilation. The frequency of turning the pile is 2-10 days / time, and the temperature needs to be kept below 75°C.

4. The device for producing organic fertilizer by composting dairy manure according to claim 1, characterized in that: The stirring device comprises a shell (1), a discharge port (5) is provided at the bottom of the shell (1), a manure compost feeding port (3) is provided on one side of the upper end of the shell (1), and an auxiliary material feeding port (2) is provided on the outer periphery of the top of the shell (1); The shell (1) is provided with a stirring mechanism, the stirring mechanism comprising an inner cylinder (7) vertically fixedly arranged in the middle of the inner cavity of the shell (1), the top of the inner cylinder (7) being in a closed shape, the outer side of the inner cylinder (7) being rotatably connected to the outer cylinder (6) via a bearing, the upper end of the inner cylinder (7) and the upper end of the shell (1) being vertically rotatably connected to a vertical shaft (17), a dragon shaft (21) being vertically arranged on the inner side of the inner cylinder (7), a dragon blade (19) being arranged on the outer side of the dragon shaft (21), a polygonal column (20) being fixedly arranged on the top of the dragon shaft (21), the upper end of the polygonal column (20) extending into the interior of the vertical shaft (17), the inner cylinder An outlet (18) is provided on the upper side of the housing (7); the upper end of the vertical shaft (17) protrudes from the top of the housing (1) and is provided with a driven wheel (33); one end of the top of the housing (1) is provided with a driving wheel (34) meshing with the driven wheel (33); one end of the top of the housing (1) is provided with a motor (31) for driving the driving wheel (34) to rotate; the side wall of the outer cylinder (6) is evenly provided with stirring blades (8); the top of the outer cylinder (6) is provided with a connecting frame (10), and the upper end of the connecting frame (10) is fixedly connected to the side wall of the vertical shaft (17), so that the rotation of the vertical shaft (17) drives the outer cylinder (6) and the dragon shaft (21) to rotate synchronously.

5. The device for producing organic fertilizer by composting dairy manure according to claim 4, characterized in that: It also includes a cleaning and discharging mechanism, the cleaning and discharging mechanism comprising an inner wall cleaning mechanism for cleaning the inner wall of the shell (1), a dragon cleaning mechanism for cleaning the dragon blades (19), and a driving mechanism; The inner wall cleaning mechanism comprises an inner rod (15) movably connected to the inner side of the stirring blade (8), a first scraper (14) for scraping the inner wall of the shell (1) is vertically arranged at one end of the inner rod (15) away from the outer cylinder (6), and an inclined groove (25) is obliquely arranged on one side of the inner rod (15).

6. The device for producing organic fertilizer by composting dairy manure according to claim 5, characterized in that: The dragon cleaning mechanism comprises a fixing frame (27) fixedly arranged on one side of the lower end of the inner cylinder (7); a second scraper (28) is connected to the fixing frame (27) in a transverse sliding guide, and an end of the second scraper (28) close to the inner cylinder (7) is adapted to the blade gap of the dragon blade (19); the top of an end of the second scraper (28) away from the inner cylinder (7) is an inclined surface, and a first spring (29) is arranged between the lower end of the second scraper (28) and the fixing frame (27); and when the first spring (29) is in an initial state, an end of the second scraper (28) close to the inner cylinder (7) does not protrude from the inner wall of the inner cylinder (7).

7. The device for producing organic fertilizer by composting dairy manure according to claim 6, characterized in that: The driving mechanism comprises a lifting frame (4) arranged on the top of the shell (1); a plurality of stirring horizontal blades (8) on the same vertical plane are vertically movably connected to stirring vertical blades (9); a convex shaft (26) movably connected to the inclined groove (25) is arranged on one side of the stirring vertical blade (9); and the inner rod (15) is displaced in a direction away from the inner cylinder (7) when the stirring vertical blade (9) drives the convex shaft (26) to move downward; a bottom ring (16) corresponding to the second scraper (28) and used for driving the second scraper (28) to move horizontally is fixedly arranged at the bottom of the plurality of stirring vertical blades (9); A rotating ring (13) is fixedly arranged on the top of each of the stirring vertical blades (9), a connecting ring (12) is arranged on the top of the inner cavity of the shell (1), and the bottom of the connecting ring (12) is rotatably connected to the rotating ring (13), and columns (11) are evenly arranged on the top of the connecting ring (12), and the upper ends of the columns (11) extend to the top of the shell (1) and are fixedly connected to the lifting frame (4), and the columns (11) are movably connected to the top of the shell (1) through a linear bearing, and one end of the top of the shell (1) is provided with a lifting cylinder (30) for driving the lifting frame (4) to rise and fall.

8. The device for producing organic fertilizer by composting dairy manure according to claim 7, characterized in that: The top of the shell (1) is provided with a limiting mechanism which is linked with the lifting frame (4) and is used to limit the position of the polygonal column (20), the limiting mechanism comprising a vertical shaft (22) which is vertically rotatably connected to the top of the polygonal column (20), a limiting round cap (23) is fixedly provided on the top of the vertical shaft (22), a polygonal groove which is adapted to the polygonal column (20) is vertically penetrated on the vertical shaft (17), the polygonal column (20) is a regular polygonal column, and the polygonal column (20) The upper end of the housing (1) extends to the polygonal groove on the vertical axis (17) and cooperates with the polygonal groove sliding guide, the diameter of the limiting round cap (23) is larger than the diameter of the vertical axis (22), and the projection of the limiting round cap (23) is inscribed in the regular polygon of the projection of the polygonal column (20), the top of the housing (1) is fixedly provided with a cylinder (32) located outside the upper end of the vertical axis (17), and the inner diameter of the cylinder (32) is larger than the diameter of the vertical axis (17), and the inner side of the cylinder (32) is evenly provided with An arc-shaped support plate (36) is provided for limiting the position of the limiting round cap (23); the side wall of the cylinder (32) is evenly and movably connected with a T-shaped rod (37) corresponding to the arc-shaped support plate (36); the outer end of the T-shaped rod (37) is sleeved with a second spring (38); one end of the T-shaped rod (37) extends to the inner side of the cylinder (32) and is fixedly connected to the upper end side wall of the arc-shaped support plate (36); one side of the lower end of the arc-shaped support plate (36) is provided with a spring extending to the cylinder (32); The lifting frame (4) is provided with a force-bearing plate (35) on the outer side thereof, and the outward side of the lower end of the force-bearing plate (35) is an inclined surface, the middle part of the lifting frame (4) is annular, and the annular ring in the middle part of the lifting frame (4) is located on the outer side of the cylinder (32) and contacts with the outer side of the force-bearing plate (35), and is configured such that when the annular ring in the middle part of the lifting frame (4) contacts with the force-bearing plate (35), the second spring (38) is in a contracted state, and the arc-shaped support plate (36) is located at the bottom of the outer periphery of the limiting round cap (23).

9. The device for producing organic fertilizer by composting dairy manure according to claim 4, characterized in that: Blades (24) are arranged at positions corresponding to the outlet (18) on the side of the connecting frame (10), and the blades (24) are evenly arranged along the vertical direction.

10. The device for producing organic fertilizer by composting dairy manure according to claim 8, characterized in that: The surface of the bottom ring (16) is arc-shaped.

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