Organic solid waste harmless treatment and compound fertilizer preparation device

Abstract

The utility model discloses an organic solid waste harmless treatment and compound fertilizer preparation device, and belongs to the field of solid waste comprehensive treatment and compound fertilizer preparation. Comprising a vehicle body shell, a liquid treatment tank and a mixed material stirring device are arranged in the vehicle body shell, and the mixed material stirring device is connected with the liquid treatment tank through a pressure pump pipeline; a liquid outlet is formed in the lower part of the side wall of the liquid treatment tank; a mixed material outlet is formed in the side wall of the mixed material stirring device; a stirring device is vertically and inwards arranged in the center of the top of the liquid treatment tank, a solid stirring device is vertically and downwards arranged at the top of the mixed material stirring device, and a feeding port connected with the liquid treatment tank, an organic material feeding port connected with the mixed material stirring device and an inorganic material feeding port connected with the mixed material stirring device are formed in the vehicle body shell. The device is simple in structure, convenient to use, capable of rapidly producing the compound fertilizer, high in efficiency and low in energy consumption, and the processes of efficient crushing, solid-liquid separation, sterilization, fermentation, compound fertilizer preparation and the like are co-processed and integrated.

Description

Technical Field

[0001] The present invention relates to the field of comprehensive solid waste disposal and compound fertilizer preparation, and in particular to a device for harmless disposal of organic solid waste and preparation of compound fertilizer. Background Art

[0002] The comprehensive disposal and resource utilization of various types of solid waste have gradually become a major challenge for my country in achieving its "dual carbon" goals. Simple disposal methods such as random stacking, incineration, and landfilling of various types of solid waste pose significant risks to soil, water sources, and the atmosphere. At the same time, both organic solid wastes such as food waste and livestock manure, and inorganic solid wastes such as fly ash and coal gangue, offer significant potential for soil improvement and remediation. Organic solid wastes have high organic matter content and a comprehensive range of nutrients, while inorganic solid wastes are rich in salt ions and active components. High-quality compound fertilizers can be prepared by combining these organic and inorganic components.

[0003] Organic waste disposal requires that most solids and liquids be disposed of separately, and inorganic matter also needs to be rationally compounded based on the component characteristics of organic matter and the remediation needs of the target soil. At the same time, since most solid wastes need to be disposed of in situ to reduce secondary pollution and disposal costs, the development of organic solid waste harmless disposal and compound fertilizer preparation equipment with traction function can promote the industrial development and practical application of the technology.

[0004] Publication number CN201930957U discloses an intelligent subcritical water technology organic solid waste treatment device, comprising an intelligent control platform, a screw conveyor, a main reactor, a buffer reactor, a steam generator, a heat transfer medium generator, a deodorizing device, and a dust removal device. The screw conveyor is connected in parallel to the feed valves of two main reactors and one buffer reactor, respectively. The discharge valves of the buffer reactors are connected to the feed valves of the two main reactors, respectively. The exhaust valves of the two main reactors are connected to the intake valves of the buffer reactors, respectively. The steam generator is connected in parallel to the intake valves of the two main reactors, and the heat transfer medium generator is connected in parallel to the heating jackets provided outside the reactor bodies of the two main reactors. The exhaust valves of the buffer reactors are connected in sequence to the deodorizing device and the dust removal device. The intelligent control platform is connected to the screw conveyor, the two main reactors, the buffer reactor, the steam generator, and the heat transfer medium generator. This device can only process organic solid waste and cannot process tail coal, etc., resulting in poor versatility, high energy consumption, and slow reaction speed. Utility Model Content

[0005] Purpose of the utility model: To address the shortcomings of the existing technology, a device for harmless disposal of organic solid waste and preparation of compound fertilizer is provided, which has a simple structure, is easy to use, has a high degree of integration and is easy to move.

[0006] Technical Solution: To achieve the above technical objectives, the present invention provides a device for harmless disposal of organic solid waste and preparation of compound fertilizer, comprising a vehicle body shell, a traction device provided at the front end of the vehicle body shell, a load-bearing frame provided at the bottom of the vehicle body shell, two pairs of traction wheels on the load-bearing frame, a liquid treatment tank and a mixed material stirring device provided inside the vehicle body, the mixed material stirring device being connected to the liquid treatment tank via a pressure pump pipeline; a liquid discharge port extending out of the vehicle body shell is provided below the side wall of the liquid treatment tank, and a mixed material discharge port extending out of the vehicle body shell is provided below the side wall of the mixed material stirring device;

[0007] A stirring device is provided vertically inwardly at the center of the top of the liquid treatment tank. The stirring device includes a rotating shaft and a stirring blade provided at the lower end of the rotating shaft. The stirring device is ensured to be in a vertical state by a stirring device fixing shaft fixed inside the vehicle body shell.

[0008] A solid stirring device is provided vertically downward on the top of the mixing material stirring device.

[0009] The vehicle body shell is provided with a feed port for adding sterilization and fermentation agents, an organic material feed port for adding liquid components of organic solid waste, and an inorganic material feed port for adding inorganic components. The ends of the feed ports are connected to the top of the liquid treatment tank. The organic material feed port is connected to the upper opening of the mixing material stirring device through a transmission feeding device, and the end of the inorganic material feed port is connected to the upper opening of the mixing material stirring device.

[0010] A separation liquid chute is provided below the transmission feeding device for conveying the separation liquid leaked from the transmission feeding device to the liquid treatment tank.

[0011] Furthermore, the pressure pump pipeline includes a liquid phase delivery pump, the inlet of the liquid phase delivery pump is connected to the bottom of the side wall of the liquid treatment tank through a liquid phase separation valve, and the outlet of the liquid phase delivery pump is connected to the side wall of the liquid phase delivery pump through a liquid phase delivery pipe; the height of the liquid phase delivery pipe leading to the inlet of the mixed material stirring device is 2 / 3-5 / 6 of the overall height.

[0012] Furthermore, a microwave sterilization device and a gas separation device for sterilizing and reducing odor are also provided in the vehicle body shell.

[0013] Furthermore, the microwave sterilization device and the gas separation device are arranged above the transmission feeding device.

[0014] Furthermore, a lifting frame is provided at the bottom of the mixing material stirring device so that the bottom level of the mixing material stirring device is higher than the liquid processing tank.

[0015] Furthermore, the transmission feeding device is a water-permeable chain plate structure, and the separation liquid chute is arranged directly below the transmission feeding device. The separation liquid chute is inclined, with the lowest point being the upper opening of the liquid treatment tank. The inclination angle formed by the separation liquid chute and the horizontal line is 20°-60°, and the width of the separation liquid chute is 1.5 times to 1.8 times the width of the transmission feeding device chain plate;

[0016] Furthermore, the aperture of the chain plate of the transmission feeding device is 0.5 mm-2 mm, which is adjusted according to the basic properties of the material and the optimization of the solid-liquid separation efficiency. The angle between the chain plate of the transmission feeding device and the horizontal is 15-45 degrees.

[0017] Furthermore, a shearing disk is provided in the organic material feed port for breaking up the liquid components of the organic solid waste. Beneficial effects

[0018] 1. The device can realize the coordinated disposal and integration of organic material crushing, solid-liquid separation, sterilization, fermentation, compound fertilizer preparation and other processes, which is of great significance for the harmless and resource-based disposal of organic matter;

[0019] 2. The device satisfies the requirement of sterilizing, passivating heavy metals and fermenting the liquid phase of organic matter, and then uniformly mixing it with organic solids and inorganic substances as liquid phase components to prepare high-quality compound fertilizer. The process is efficient and easy to operate.

[0020] 3. The addition of inorganic matter can be targeted and compounded based on the characteristics of organic materials and soil, and can effectively utilize components such as coal gangue, fly ash, coal slime, etc. that have been harmlessly treated and effectively activated to achieve comprehensive utilization of bulk solid waste.

[0021] 4. The entire device can be easily towed to the solid waste production site for operation. The various work processes of the equipment are effectively connected, the disposal efficiency is high, and the feeding-crushing-mixing-discharging processes all achieve efficient coupling to reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the device for harmless disposal of organic solid waste and preparation of compound fertilizer of the utility model.

[0023] Figure 2 This is a top view of the shear disk of the organic material feed port in the utility model.

[0024] In the figure: 1. traction wheel, 2. load-bearing frame, 3. discharge port, 4. liquid treatment tank, 5. stirring device, 6. feed port, 7. fixed shaft of stirring device, 8. separation liquid chute, 9. transmission feed device, 10. organic material feed port, 11. microwave sterilization device, 12. gas separation device, 13. solid stirring device, 14. inorganic material feed port, 15. mixed material stirring device, 16. traction device, 17. mixed material discharge port, 18. liquid phase conveying pipe, 19. liquid phase conveying pump, 20. liquid phase separation valve. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are further described below with reference to the accompanying drawings:

[0026] like Figure 1 As shown, the utility model discloses a harmless disposal device for organic solid waste and compound fertilizer preparation, comprising a load-bearing frame 2, a traction wheel 1 and a surrounding supporting shell, on which a traction interface 16 for traction is installed. The organic solid waste to be disposed of passes through an external conveying device such as Figure 2 The organic material feed port 10 shown is broken up by the shear disk at the inlet end and then enters the transmission feeding device 9, where it is sterilized by the microwave sterilization device directly above the transmission feeding device 9, and the gas generated by the organic solid waste components is separated by the gas separation device 12 for further disposal.

[0027] The liquid components that fall onto the separation liquid chute 8 are separated by the permeable chain plates on the transmission feed device 9. After various agents required for sterilization, fermentation, etc. are added through the feed port 6, they are stirred and mixed evenly by the stirring device 5 fixed to the side wall of the device by the stirring device fixed shaft 6. After reacting for a certain period of time, the liquid phase separation valve 20 is opened and the liquid is introduced into the mixed material stirring device 15 through the liquid phase conveying pipe 18 by the liquid phase conveying pump 19. The solid components after the separation of the liquid components of the organic solid waste are conveyed into the mixed material stirring device 15 through the transmission feed device 9. After a certain amount of inorganic components are added through the inorganic material feed port 14, they are forced to stir and mix evenly by the solid stirring device 13, and then discharged as compound fertilizer material through the mixed material discharge port 17 for subsequent processing.

[0028] The stirring blades connected to the stirring shaft of the stirring device used in the mixing material stirring device 15 adopt a three-dimensional structure of top dispersion-middle mixing-bottom discharge. The top blade adopts a conical shear blade structure for shearing large particles and breaking up agglomerated materials. The middle blade adopts a propeller structure for forcibly mixing the components. The bottom blade is located at the bottom of the device and adopts a vertical smooth blade structure for pushing the material out along the tangent line along the discharge port.

[0029] To remediate saline-alkali soil in a certain area, the project selected large quantities of difficult-to-treat livestock manure from the local area as the primary source of organic matter. Coal slime and coal gangue from nearby mining areas were also selected as inorganic components for compounding. The manure, scooped up by a forklift, was transported via a spiral feeder to the organic matter inlet 10. A rotating shear disc broke up the bulky material before it entered the transmission feeder 9. The chain plates driven by the transmission feeder 9 effectively transported the material, while the pores on the chain plates' surfaces effectively separated the solid and liquid. The liquid passed through the pores into the separation liquid chute 8 and into the liquid treatment tank 4. Water, an activator, and anaerobic fermentation bacteria were added to the liquid treatment tank 4, and then the stirring device 5 was activated to react, producing safe and efficient liquid-phase organic matter. After the solid material on the chain plates of the transmission feeder 9 had been separated from the liquid, it was sterilized by microwaves in a micro-wave sterilization device 11 during transportation. The gases generated by the material were discharged and collected by a gas separation device 12 at the top of the chain plates for further comprehensive utilization. After the organic solid components that have been dehydrated, sterilized and exhausted and are conveyed by the chain plate enter the mixed material stirring device 15, according to the requirement of a pH value of about 6.2 for the compound fertilizer after compounding the organic matter-inorganic components and the principle of about 20% of water- and fertilizer-retaining adsorption components, the deashed low-rank coal slime and coal gangue are selected and crushed and added together through the inorganic material feed port 14. At the same time, the liquid organic matter that has completed the reaction is passed through the conveying pump and the liquid phase conveying pipe 18 into the mixed material stirring device 15. After being evenly mixed by the stirring device 13 in the liquid phase conveying pipe 18, the mixed material discharge port 17 is opened to discharge the material for subsequent molding to prepare granular compound fertilizer.

Claims

1. A device for harmless disposal of organic solid waste and preparation of compound fertilizer, characterized by: The vehicle comprises a vehicle body shell, a traction device (16) is provided at the front end of the vehicle body shell, a load-bearing frame (2) is provided at the bottom of the vehicle body shell, two pairs of traction wheels (1) are provided on the load-bearing frame (2), a liquid treatment tank (4) and a mixed material stirring device (15) with a raised bottom are provided in the vehicle body shell, and the mixed material stirring device (15) is connected to the liquid treatment tank (4) via a pressure pump pipeline; a liquid discharge port (3) extending out of the vehicle body shell is provided below the side wall of the liquid treatment tank (4), and a mixed material discharge port (17) extending out of the vehicle body shell is provided below the side wall of the mixed material stirring device (15); A stirring device (5) is provided vertically inwardly at the center of the top of the liquid treatment tank (4), the stirring device (5) comprising a rotating shaft and a stirring blade provided at the lower end of the rotating shaft, and the stirring device (5) is ensured to be in a vertical state by a stirring device fixing shaft (7) fixed inside the vehicle body shell; A solid stirring device (13) is provided vertically downward on the top of the mixed material stirring device (15). The vehicle body shell is provided with a feed port (6) for adding sterilization and fermentation agents, an organic material feed port (10) for adding organic solid waste liquid components, and an inorganic material feed port (14) for adding inorganic components, wherein the end of the feed port (6) is communicated with the top of the liquid treatment tank (4), the organic material feed port (10) is connected to the upper opening of the mixing material stirring device (15) through the transmission feeding device (9), and the end of the inorganic material feed port (14) is connected to the upper opening of the mixing material stirring device (15); A separation liquid chute (8) is provided below the transmission feeding device (9) for conveying the separation liquid leaking from the transmission feeding device (9) to the liquid processing tank (4).

2. The device for harmless disposal of organic solid waste and preparation of compound fertilizer according to claim 1, characterized in that: The booster pump pipeline includes a liquid phase delivery pump (19), the inlet of the liquid phase delivery pump (19) is connected to the lower side wall of the liquid treatment tank (4) through a liquid phase separation valve (20), and the outlet of the liquid phase delivery pump (19) is connected to the side wall of the liquid phase delivery pump (19) through a liquid phase delivery pipe; the height of the liquid phase delivery pipe (18) leading to the inlet of the mixed material stirring device (15) is 2 / 3-5 / 6 of the overall height of the mixed material stirring device (15).

3. The device for harmless disposal of organic solid waste and preparation of compound fertilizer according to claim 1, characterized in that: A microwave sterilization device (11) and a gas separation device (12) for sterilizing and reducing odor are also provided in the vehicle body shell.

4. The device for harmless disposal of organic solid waste and preparation of compound fertilizer according to claim 3, characterized in that: The microwave sterilization device (11) and the gas separation device (12) are arranged above the transmission feeding device (9).

5. The device for harmless disposal of organic solid waste and preparation of compound fertilizer according to claim 1, characterized in that: A lifting frame is provided at the bottom of the mixing material stirring device (15), so that the bottom level of the mixing material stirring device (15) is higher than the liquid processing tank (4).

6. The device for harmless disposal of organic solid waste and preparation of compound fertilizer according to claim 1, characterized in that: The transmission feeding device (9) is a water-permeable chain plate structure. The separation liquid chute (8) is arranged directly below the transmission feeding device (9). The separation liquid chute (8) is designed to be inclined, and the lowest point is the upper opening of the liquid treatment tank (4). The inclination angle formed by the separation liquid chute (8) and the horizontal line is 20°-60°. The width of the separation liquid chute (8) is 1.5 times to 1.8 times the width of the chain plate of the transmission feeding device (9).

7. The device for harmless disposal of organic solid waste and preparation of compound fertilizer according to claim 6, characterized in that: The aperture of the chain plate of the transmission feeding device (9) is 0.5 mm - 2 mm, which is adjusted according to the basic properties of the material and the optimization of the solid-liquid separation efficiency. The angle between the chain plate of the transmission feeding device (9) and the horizontal is 15° - 45°.

8. The device for harmless disposal of organic solid waste and preparation of compound fertilizer according to claim 1, characterized in that: A shearing disk for breaking up the liquid components of the organic solid waste is provided in the organic material feed port (10).

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