Equipment for producing soil conditioner by utilizing industrial solid waste

Abstract

The utility model relates to the technical field of production of soil amendment from solid waste, and particularly discloses a device for producing soil amendment from industrial solid waste, which comprises an upper tank body and a lower tank body, an activation mechanism is arranged in the upper tank body, the activation mechanism comprises two symmetrically distributed rotating shafts which penetrate through and are rotatably connected to the upper end of the upper tank body, spiral blades with sawteeth are fixedly connected to the outer walls of the two rotating shafts, gears are fixedly connected to the outer walls of the two rotating shafts, the two gears are meshed with each other, and supporting rings are fixedly connected to the interiors of the upper tank body and the lower tank body; a strong shearing force field is formed through meshing transmission of two reversely-rotating sawtooth spiral blades and a gear, the cavitation effect of an ultrasonic generator is matched, the silicate crystal depolymerization time is shortened, heavy metal is stabilized and strengthened, an annular drainage pipe and a flow guide pipe form double-layer atomization covering, and the heavy metal is converted into stable sulfide; and the risk of heavy metal migration is fundamentally blocked.

Description

Technical Field

[0001] This utility model relates to the field of solid waste production of soil conditioners, and specifically discloses a device for producing soil conditioners using industrial solid waste. Background Technology

[0002] With the acceleration of industrialization and urbanization, the annual output of industrial solid waste such as fly ash, metallurgical slag, and tailings has exceeded 4 billion tons. Their storage not only occupies vast amounts of land but also poses environmental risks such as heavy metal leakage and dust pollution. At the same time, soil degradation in my country's arable land is becoming increasingly severe, with approximately 25% of farmland facing the threat of acidification, salinization, or heavy metal pollution. Converting industrial solid waste into soil conditioners can both realize the resource utilization of solid waste and improve soil quality, making it a current research hotspot in the fields of environment and agriculture.

[0003] Currently, the production of solid waste-based soil conditioners mainly employs a high-temperature calcination activation process (800–1200℃), which releases active ingredients by disrupting the crystal structure of silicate minerals. However, this technology faces two major bottlenecks:

[0004] (1) Insufficient activation efficiency: The depolymerization kinetics of silicate crystals after calcination is slow, resulting in a low release rate of effective components (such as active silicon and calcium) in the amendment, which is difficult to meet the needs of rapid soil remediation.

[0005] (2) High-temperature processes can easily induce the volatilization of heavy metals (such as Pb, Cd, and As) and the activation of secondary occurrence forms, which poses a risk of pollution migration;

[0006] Therefore, a device is needed to produce soil conditioners using industrial solid waste to solve this problem. Utility Model Content

[0007] This invention proposes a device for producing soil conditioner from industrial solid waste. It uses two serrated spiral blades to form a strong shear force field, which, combined with the cavitation effect of an ultrasonic generator, shortens the depolymerization time of silicate crystals. The annular drainage pipe and the guide pipe form a double-layer atomization coverage, which increases the contact area between the passivating agent and the material, converting it into stable sulfides and fundamentally blocking the risk of heavy metal migration.

[0008] This invention is implemented as follows: a device for producing soil conditioner using industrial solid waste includes an upper tank and a lower tank. An activation mechanism is installed inside the upper tank. The activation mechanism includes two symmetrically distributed rotating shafts that penetrate and are rotatably connected to the upper end of the upper tank. The outer walls of both rotating shafts are fixedly connected to serrated spiral blades. Gears are also fixedly connected to the outer walls of both rotating shafts, and the two gears mesh with each other. Support rings are fixedly connected inside both the upper and lower tanks. Multiple evenly distributed internal thread grooves are formed inside each of the two support rings, and ultrasonic generators are threaded into the interiors of these internal thread grooves. A diatomaceous earth suspension tank and a sulfur powder storage tank are respectively installed at the left and right ends of the upper tank. An auxiliary pipe with a pump is connected to the outer wall of the diatomaceous earth suspension tank. The other end of the auxiliary pipe penetrates the upper tank and is connected to a drainage pipe with multiple nozzles. The outer wall of the sulfur powder storage tank is connected to a delivery pipe with a delivery pump. The other end of the delivery pipe penetrates the upper tank and is connected to a guide pipe with multiple nozzles.

[0009] As a preferred embodiment of the equipment for producing soil conditioner from industrial solid waste according to this utility model, a support is fixedly connected to the upper end of the upper tank, and a first motor with its output end fixedly connected to one of the rotating shafts is installed on the upper end of the support.

[0010] As a preferred embodiment of the equipment for producing soil conditioner from industrial solid waste according to this utility model, a mounting frame is fixedly connected to the outer wall of the lower tank. Two symmetrically distributed electric actuators are installed at the lower end of the mounting frame, and the output ends of the two electric actuators pass through the mounting frame and are fixedly connected to the upper tank.

[0011] As a preferred embodiment of the equipment for producing soil conditioner from industrial solid waste according to this utility model, a support plate that abuts against the diatomaceous earth suspension tank is fixedly connected to the left end of the upper tank, and a support frame that is fixedly connected to the outer wall of the sulfur powder storage tank is fixedly connected to the right end of the upper tank.

[0012] In a preferred embodiment of this invention, the two spiral blades have opposite spiral lines.

[0013] As a preferred embodiment of the equipment for producing soil conditioner from industrial solid waste according to this utility model, both the drainage pipe and the guide pipe are annular structures, and the diameter of the drainage pipe is smaller than the diameter of the guide pipe.

[0014] As a preferred embodiment of the equipment for producing soil conditioner from industrial solid waste according to this utility model, a second motor is installed at the upper end of the sulfur powder storage tank, and the output end of the second motor passes through the sulfur powder storage tank and is fixedly connected to a spiral feed rod.

[0015] As a preferred embodiment of the equipment for producing soil conditioner from industrial solid waste according to this utility model, a sealing ring is fixedly connected to the lower end of the upper tank, and an annular groove adapted to the sealing ring is opened at the upper end of the lower tank.

[0016] The beneficial effects of this utility model are:

[0017] A strong shear force field is generated by the meshing of two counter-rotating sawtooth helical blades and gears, which, together with the cavitation effect of the ultrasonic generator, shortens the depolymerization time of silicate crystals.

[0018] The heavy metal stabilization is enhanced by forming a double-layer atomization coverage with the annular drainage tube and the guide tube, which increases the contact area between the passivating agent and the material, converting it into stable sulfides and fundamentally blocking the risk of heavy metal migration. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a cross-sectional view of the equipment for producing soil conditioner using industrial solid waste according to this utility model.

[0021] Figure 2 This is a partial structural diagram of the present invention.

[0022] Figure 3 This is a structural diagram of the support ring of this utility model;

[0023] Figure 4 This is a structural diagram of the guide tube of this utility model.

[0024] The markings in the diagram are: 1. Upper tank; 2. Lower tank; 3. Support; 4. First motor; 5. Rotating shaft; 6. Gear; 7. Diatomaceous earth suspension tank; 8. Auxiliary pipe; 9. Drainage pipe; 10. Guide pipe; 11. Sulfur powder storage tank; 12. Conveying pipe; 13. Spiral blade; 14. Support ring; 15. Internal threaded groove; 16. Ultrasonic generator; 17. Sealing ring; 18. Support plate; 19. Support frame; 20. Second motor; 21. Spiral feed rod; 22. Electric actuator; 23. Mounting frame. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0026] Please see Figure 1-4A device for producing soil conditioner from industrial solid waste includes an upper tank 1 and a lower tank 2. An activation mechanism is installed inside the upper tank 1. The activation mechanism includes two symmetrically distributed rotating shafts 5 that penetrate and are rotatably connected to the upper end of the upper tank 1. The outer walls of both rotating shafts 5 are fixedly connected to serrated spiral blades 13. Gears 6 are also fixedly connected to the outer walls of both rotating shafts 5, and the two gears 6 mesh with each other. Support rings 14 are fixedly connected inside both the upper tank 1 and the lower tank 2. Each support ring 14 has multiple evenly distributed... The upper tank 1 has uniform internal thread grooves 15, and each of the internal thread grooves 15 is threaded with an ultrasonic generator 16. The left and right ends of the upper tank 1 are respectively provided with a diatomaceous earth suspension tank 7 and a sulfur powder storage tank 11. The outer wall of the diatomaceous earth suspension tank 7 is connected to an auxiliary pipe 8 with a liquid pump. The other end of the auxiliary pipe 8 passes through the upper tank 1 and is connected to a drainage pipe 9 with multiple nozzles. The outer wall of the sulfur powder storage tank 11 is connected to a delivery pipe 12 with a delivery pump. The other end of the delivery pipe 12 passes through the upper tank 1 and is connected to a guide pipe 10 with multiple nozzles.

[0027] In this embodiment: After the industrial solid waste raw material enters the upper tank 1 through the conveying system, it is synchronously driven by two meshing gears 6, and the two rotating shafts 5 equipped with sawtooth spiral blades 13 rotate synchronously. During the rotation, the sawtooth structure generates a strong shearing and crushing effect on the solid waste material, while the spiral blades 13 propel and form a vortex stirring, realizing the primary physical activation of the material;

[0028] Multiple ultrasonic generators 16 mounted on the support ring 14 generate high-frequency mechanical vibration waves. These vibration waves produce a cavitation effect in the liquid medium, causing microcracks to form on the surface of solid waste particles, accelerating the desorption process of heavy metal ions, and simultaneously stimulating active sites on the material surface.

[0029] The diatomaceous earth suspension is pumped through auxiliary pipe 8 to drainage pipe 9, where it is atomized and sprayed by an array of nozzles. The microporous structure of diatomaceous earth effectively adsorbs free heavy metal ions in solid waste.

[0030] Sulfur powder is injected into the reaction system via a pump and a guide pipe 10, where it is uniformly dispersed under mechanical stirring. Sulfur reacts with metal oxides in the solid waste through a sulfidation reaction, generating stable metal sulfides, thus fundamentally blocking the risk of heavy metal migration.

[0031] As a technical optimization of this utility model, a bracket 3 is fixedly connected to the upper end of the upper tank 1, and a first motor 4 with an output end fixedly connected to one of the rotating shafts 5 is installed on the upper end of the bracket 3.

[0032] In this embodiment, the first motor 4 can drive one of the rotating shafts 5 to rotate.

[0033] As a technical optimization of this utility model, a mounting frame 23 is fixedly connected to the outer wall of the lower tank 2. Two symmetrically distributed electric actuators 22 are installed at the lower end of the mounting frame 23. The output ends of the two electric actuators 22 pass through the mounting frame 23 and are fixedly connected to the upper tank 1.

[0034] In this embodiment, the upper tank 1 can be moved by the electric push rod 22, so that the upper tank 1 and the lower tank 2 can be separated, which facilitates the disassembly and maintenance of the ultrasonic generator 16 inside the upper tank 1 and the lower tank 2.

[0035] As a technical optimization of this utility model, the left end of the upper tank 1 is fixedly connected to a support plate 18 that abuts against the diatomaceous earth suspension tank 7, and the right end of the upper tank 1 is fixedly connected to a support frame 19 that is fixedly connected to the outer wall of the sulfur powder storage tank 11.

[0036] In this embodiment: the diatomaceous earth suspension tank 7 can be supported by the support plate 18, and the sulfur powder storage tank 11 can be supported by the support frame 19.

[0037] As a technical optimization of this utility model, the helical lines of the two helical blades 13 are opposite.

[0038] In this embodiment, the reverse spiral blade 13 generates material flow in opposite directions when rotating, forming convection or shear force, thereby accelerating the mixing of materials.

[0039] As a technical optimization of this utility model, both the drainage tube 9 and the guide tube 10 are annular structures, and the diameter of the drainage tube 9 is smaller than the diameter of the guide tube 10.

[0040] In this embodiment, the obstruction of the drainage tube 9 by the drainage tube 10 can be avoided.

[0041] As a technical optimization of this utility model, a second motor 20 is installed at the upper end of the sulfur powder storage tank 11, and the output end of the second motor 20 passes through the sulfur powder storage tank 11 and is fixedly connected to a spiral feed rod 21.

[0042] In this embodiment, the second motor 20 can drive the screw feeder 21 to rotate, thereby conveying the sulfur powder and avoiding poor material flow.

[0043] As a technical optimization of this utility model, a sealing ring 17 is fixedly connected to the lower end of the upper tank 1, and an annular groove adapted to the sealing ring 17 is opened at the upper end of the lower tank 2.

[0044] In this embodiment, the sealing ring 17 can be used to easily seal the junction between the upper tank 1 and the lower tank 2.

[0045] The working principle and usage process of this utility model are as follows: During use, industrial solid waste raw materials are conveyed into the upper tank 1. The first motor 4 drives one of the rotating shafts 5 and gear 6 to rotate, enabling synchronous transmission of the two meshing gears 6. The two rotating shafts 5, equipped with serrated spiral blades 13, rotate synchronously. During rotation, the serrated structure generates a strong shearing and crushing effect on the solid waste material, while the spiral blades 13 propel it to form a vortex, achieving primary physical activation of the material.

[0046] Multiple ultrasonic generators 16 mounted on the support ring 14 generate high-frequency mechanical vibration waves. These vibration waves create a cavitation effect in the liquid medium, causing microcracks to form on the surface of solid waste particles, accelerating the desorption process of heavy metal ions, and simultaneously stimulating active sites on the material surface.

[0047] The diatomaceous earth suspension is pumped through auxiliary pipe 8 to drainage pipe 9, where it is atomized and sprayed by an array of nozzles. The microporous structure of diatomaceous earth effectively adsorbs free heavy metal ions in solid waste.

[0048] Sulfur powder is injected into the reaction system via a pump and a guide pipe 10, where it is uniformly dispersed under mechanical stirring. Sulfur reacts with metal oxides in the solid waste through a sulfidation reaction, forming stable metal sulfides.

[0049] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0050] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. An apparatus for producing soil conditioner using industrial solid waste, comprising an upper tank (1) and a lower tank (2), characterized in that: An activation mechanism is provided inside the upper tank (1). The activation mechanism includes two symmetrically distributed rotating shafts (5) that pass through and are rotatably connected to the upper end of the upper tank (1). The outer walls of the two rotating shafts (5) are fixedly connected with serrated spiral blades (13). The outer walls of the two rotating shafts (5) are fixedly connected with gears (6), and the two gears (6) mesh with each other. Support rings (14) are fixedly connected inside the upper tank (1) and the lower tank (2). The interiors of the two support rings (14) are provided with multiple evenly distributed internal thread grooves (15). (15) is internally threaded with an ultrasonic generator (16). The upper tank (1) is provided with a diatomaceous earth suspension tank (7) and a sulfur powder storage tank (11) at its left and right ends respectively. The outer wall of the diatomaceous earth suspension tank (7) is connected to an auxiliary pipe (8) with a liquid pump. The other end of the auxiliary pipe (8) passes through the upper tank (1) and is connected to a drainage pipe (9) with multiple nozzles. The outer wall of the sulfur powder storage tank (11) is connected to a delivery pipe (12) with a delivery pump. The other end of the delivery pipe (12) passes through the upper tank (1) and is connected to a guide pipe (10) with multiple nozzles.

2. The equipment for producing soil conditioner from industrial solid waste according to claim 1, characterized in that: The upper end of the upper tank (1) is fixedly connected to a bracket (3), and the upper end of the bracket (3) is equipped with a first motor (4) whose output end is fixedly connected to one of the rotating shafts (5).

3. The equipment for producing soil conditioner from industrial solid waste according to claim 1, characterized in that: The lower tank (2) is fixedly connected to the outer wall of the mounting frame (23). Two symmetrically distributed electric actuators (22) are installed at the lower end of the mounting frame (23). The output ends of the two electric actuators (22) pass through the mounting frame (23) and are fixedly connected to the upper tank (1).

4. The equipment for producing soil conditioner from industrial solid waste according to claim 1, characterized in that: The left end of the upper tank (1) is fixedly connected to a support plate (18) that abuts against the diatomaceous earth suspension tank (7), and the right end of the upper tank (1) is fixedly connected to a support frame (19) that is fixedly connected to the outer wall of the sulfur powder storage tank (11).

5. The equipment for producing soil conditioner from industrial solid waste according to claim 1, characterized in that: The helices of the two helical blades (13) are opposite.

6. The equipment for producing soil conditioner from industrial solid waste according to claim 1, characterized in that: Both the drainage tube (9) and the guide tube (10) are annular structures, and the diameter of the drainage tube (9) is smaller than the diameter of the guide tube (10).

7. The equipment for producing soil conditioner from industrial solid waste according to claim 1, characterized in that: The upper end of the sulfur powder storage tank (11) is equipped with a second motor (20), and the output end of the second motor (20) passes through the sulfur powder storage tank (11) and is fixedly connected to a screw feeder (21).

8. The equipment for producing soil conditioner from industrial solid waste according to claim 1, characterized in that: The lower end of the upper tank (1) is fixedly connected with a sealing ring (17), and the upper end of the lower tank (2) is provided with an annular groove that matches the sealing ring (17).

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