Preparation device for preparing coal gangue-based ecological soil from kitchen waste

By designing a crushing, filtering, mixing structure and a permeable structure, the problems of uneven mixing, clogging, and explosive gas accumulation in the preparation device for coal gangue-based ecological soil from kitchen waste were solved, achieving uniform material mixing and improved safety.

CN224252679UActive Publication Date: 2026-05-19XIAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XIAN UNIV OF SCI & TECH
Filing Date
2025-06-12
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing equipment for preparing eco-soil based on coal gangue from kitchen waste suffers from problems such as uneven mixing, easy clogging, difficulty in maintaining the sealing structure, and accumulation of flammable and explosive gases.

Method used

It adopts a crushing, filtering, and mixing structure and a permeable structure, including crushing blades, filter discs, tilting crossbars, and scrapers, to crush unevenly mixed materials and discharge flammable and explosive gases through an annular filter plate.

Benefits of technology

It achieves uniform mixing of materials, avoids clogging, facilitates maintenance, improves safety, and reduces the risk of explosion.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a preparation device for preparing coal gangue-based ecological soil from kitchen waste, and relates to the technical field of preparation devices. Comprising a mixing barrel, a drying barrel is fixedly connected to the bottom of the mixing barrel, drying equipment is arranged outside the drying barrel, a controller is installed on one side of the drying equipment, a funnel-shaped groove is formed in the bottom of the drying barrel, supporting legs are fixedly connected to the bottom of the drying barrel, and a discharging pipe is arranged at the bottom of the drying barrel; by arranging the crushing, filtering and stirring structure, kitchen waste, coal gangue cakes and other substances with large volume in the mixing cylinder can be crushed, the conditions of uneven mixing and blockage caused by large volume can be avoided, and meanwhile, crushed substances can be filtered and unqualified substances can be continuously crushed under the action of a filtering circular plate, so that the working efficiency is improved, and the working efficiency is improved. And when maintenance is needed, the cover plate and other parts can be disassembled and maintained, so that internal parts can be conveniently cleaned or unblocked, and the overall use is more convenient.
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Description

Technical Field

[0001] This utility model relates to the field of preparation device technology, and in particular to a preparation device for coal gangue-based ecological soil made from kitchen waste. Background Technology

[0002] With the rapid growth of food waste production year by year, the food waste treatment industry has great potential for growth and a large market space. Therefore, using specialized preparation equipment to treat food waste and reduce, render harmless, and recycle it as a resource, and mixing food waste with coal gangue to generate coal gangue-based ecological soil, can realize the reuse of solid waste resources. This is where the food waste-to-coal gangue-based ecological soil preparation equipment comes in.

[0003] Chinese patent publication number CN220824714U discloses a device for preparing coal gangue-based ecological soil from kitchen waste. The device includes a drying cylinder, a mixing cylinder fixedly connected to the upper middle section of the drying cylinder, a stirring mechanism movably connected to the upper middle section of the mixing cylinder, feed hoppers fixedly connected to the upper left and upper right sections of the mixing cylinder, a heating mechanism fixedly connected to the outer surface of the drying cylinder, a controller fixedly connected to the upper front section of the heating mechanism, four support legs fixedly connected to the lower periphery of the drying cylinder, and a discharge pipe fixedly connected to the lower right section of the drying cylinder. This device for preparing coal gangue-based ecological soil from kitchen waste, by incorporating a stirring mechanism and a turning rack, can thoroughly mix kitchen waste and coal gangue powder, improving the quality of the ecological soil. The heating mechanism allows for rapid drying of the ecological soil, increasing production efficiency and making it suitable for widespread use.

[0004] The above-mentioned equipment has a relatively complete structure and function, but it has the following three problems:

[0005] 1. The mixing drum can only mix kitchen waste and coal gangue. However, kitchen waste contains large volumes of waste, and the waste itself tends to clump together, which affects the overall mixing efficiency. In addition, the clumps of waste can easily clog the conveying pipe at the connection between the mixing drum and the drying drum, requiring frequent maintenance, which is very inconvenient.

[0006] 2. The mixing drum and drying drum of the above patent are both sealed structures. When the internal components are damaged or the internal parts are blocked, they cannot be disassembled, repaired and maintained in a timely manner, which will affect the overall use.

[0007] 3. The inside of the drying drum is a mixture of kitchen waste and coal gangue. After the kitchen waste is heated and treated, the microorganisms inside are prone to fermentation, which will produce flammable and explosive gases such as methane. If these gases are generated in the sealed drying drum for a long time and cannot be discharged, an explosion may occur, which may lead to a safety accident.

[0008] Therefore, this utility model provides a device for preparing eco-soil based on coal gangue from kitchen waste. Utility Model Content

[0009] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a device for preparing eco-soil based on coal gangue from kitchen waste.

[0010] To achieve the above objectives, this utility model adopts the following technical solution: a device for preparing coal gangue-based ecological soil from kitchen waste, comprising a mixing cylinder, a drying cylinder fixedly connected to the bottom of the mixing cylinder, a drying device installed outside the drying cylinder, a controller installed on one side of the drying device, a funnel-shaped groove provided at the bottom of the drying cylinder, a support leg fixedly connected to the bottom of the drying cylinder, a discharge pipe provided at the bottom of the drying cylinder, and a solenoid valve installed inside the discharge pipe; a crushing, filtering, and stirring structure is provided inside the mixing cylinder and the drying cylinder, the crushing, filtering, and stirring structure includes a cover plate, a drive motor fixedly installed on the top of the cover plate, a transmission shaft fixedly connected to the output end of the drive motor, crushing blades fixedly connected to the outer surface of the transmission shaft, and a feed frame provided on the top of the cover plate; a venting structure is provided on the top of the drying cylinder, the venting structure includes an annular filter plate, and the annular filter plate is fixedly connected to the top of the drying cylinder.

[0011] In a preferred embodiment, a connecting circular block is fixedly connected to the outer surface of the drive shaft, a rectangular connecting plate is fixedly connected to the outer surface of the connecting circular block, an L-shaped shovel plate is fixedly connected to the bottom of the rectangular connecting plate, an L-shaped scraper is fixedly connected to one side of the rectangular connecting plate, a connecting circular rod is fixedly connected to the bottom of the drive shaft by bolts, a filter circular plate is rotatably connected to the outer surface of the connecting circular rod, an annular locking block is fixedly connected to the bottom of the filter circular plate, an annular locking frame is fixedly connected to the connection between the mixing cylinder and the drying cylinder, a circular insert rod is fixedly connected to the bottom of the annular locking block, a circular insertion hole is opened on the inner wall of the annular locking frame, an auxiliary rotating rod is fixedly connected to the bottom of the connecting circular rod by bolts, a material turning crossbar is fixedly connected to the outer surface of the auxiliary rotating rod, and a scraper is fixedly connected to the bottom of the auxiliary rotating rod.

[0012] The technical effects of adopting the above-mentioned further solution are as follows: Under the action of the drive shaft and crushing blades, the kitchen waste and coal gangue inside the mixing drum can be mixed and crushed, thereby making the kitchen waste and coal gangue mixed more evenly. At the same time, under the action of the filter disc at the bottom, the kitchen waste and coal gangue of the correct size can be screened and fall into the drying drum at the bottom. The kitchen waste and coal gangue that are not completely crushed can be moved upward by the action of the L-shaped shovel, thereby circulating and crushing and filtering. The turning crossbar and scraper inside the drying drum can mix the kitchen waste and coal gangue mixture that falls to the bottom and accelerate drying.

[0013] In a preferred embodiment, a rectangular frame is fixedly connected to one side of the mixing cylinder, a rectangular plate is fixedly connected to one side of the cover plate, a rectangular block is fixedly connected to the bottom of the rectangular plate, a first screw hole is provided on one side of the rectangular frame, a second screw hole is provided on one side of the rectangular block, and a threaded rod is threadedly connected to the inner wall of the first screw hole and the second screw hole.

[0014] The technical effect of adopting the above-mentioned further solution is that the rectangular card block can cooperate with the rectangular card frame to disassemble the cover plate. When disassembling, it is necessary to use the disassembly tool to disassemble the auxiliary rotating rod connected to the connecting round rod through the bottom discharge pipe. The opening of the discharge pipe is enlarged, which can be used as a maintenance port during maintenance. At this time, the cover plate can be disassembled, and then the interior can be maintained.

[0015] In a preferred embodiment, an annular baffle is fixedly connected to the top of the drying cylinder, the annular filter plate is located inside the annular baffle, an annular block is snapped into the top inner wall of the annular filter plate, an annular auxiliary plate is fixedly connected to the top of the annular block, and an operating block is fixedly connected to the outer surface of the annular auxiliary plate.

[0016] The technical effects of adopting the above-mentioned further solutions are as follows: the annular filter plate can disperse flammable and explosive gases such as methane generated by kitchen waste inside the drying drum, preventing them from accumulating inside the drying drum and causing an explosion; the annular block and other components can seal the annular baffle, thus preventing debris from falling into the interior of the annular baffle when not in use.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0018] By incorporating a crushing, filtering, and mixing structure, large volumes of food waste and coal gangue lumps inside the mixing drum can be crushed, thus preventing uneven mixing and blockages caused by large volumes. Simultaneously, the crushed material is filtered by the filter discs, while unqualified materials continue to be crushed. Furthermore, components such as the cover can be disassembled for maintenance, facilitating cleaning or unclogging of internal parts and making overall use more convenient. The venting structure allows for the release of flammable and explosive gases generated from food waste inside the drying drum, preventing gas accumulation and potential safety hazards, and improving overall safety performance. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a device for preparing coal gangue-based ecological soil from kitchen waste provided by this utility model;

[0020] Figure 2 A schematic diagram of the cover plate structure of a device for preparing coal gangue-based ecological soil from kitchen waste provided by this utility model;

[0021] Figure 3 A schematic diagram of the drive shaft structure of a device for preparing coal gangue-based ecological soil from kitchen waste, provided by this utility model;

[0022] Figure 4 A schematic diagram of the annular frame structure of the preparation device for coal gangue-based ecological soil from kitchen waste provided by this utility model;

[0023] Figure 5 A schematic diagram of the annular block structure of a device for preparing coal gangue-based ecological soil from kitchen waste, provided by this utility model.

[0024] Legend:

[0025] 1. Mixing drum; 2. Drying drum; 3. Drying equipment; 4. Support legs; 5. Discharge pipe;

[0026] 6. Crushing, filtering, and mixing structure; 61. Cover plate; 62. Drive motor; 63. Feed frame; 64. Drive shaft; 65. Rectangular connecting plate; 66. L-shaped shovel plate; 67. L-shaped scraper; 68. Connecting round block; 69. Crushing blade; 610. Connecting round rod; 611. Filter round plate; 612. Annular locking block; 613. Round insertion rod; 614. Annular locking frame; 615. Round insertion hole; 616. Auxiliary rotating rod; 617. Tilting crossbar; 618. Scraper plate; 619. Rectangular locking frame; 620. Rectangular plate; 621. Rectangular locking block; 622. First screw hole; 623. Second screw hole; 624. Threaded locking rod;

[0027] 7. Breathable structure; 71. Annular filter plate; 72. Annular baffle; 73. Annular block; 74. Annular auxiliary plate; 75. Operating block;

[0028] 8. Funnel-shaped groove; 9. Controller. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] like Figures 1-5 As shown, this embodiment provides a technical solution: a device for preparing coal gangue-based ecological soil from kitchen waste, including a mixing cylinder 1, a drying cylinder 2 fixedly connected to the bottom of the mixing cylinder 1, a drying device 3 installed outside the drying cylinder 2, a controller 9 installed on one side of the drying device 3, a funnel-shaped groove 8 at the bottom of the drying cylinder 2, a support leg 4 fixedly connected to the bottom of the drying cylinder 2, a discharge pipe 5 at the bottom of the drying cylinder 2, and a solenoid valve installed inside the discharge pipe 5; a crushing, filtering, and stirring structure 6 is provided inside the mixing cylinder 1 and the drying cylinder 2, the crushing, filtering, and stirring structure 6 includes a cover plate 61, a drive motor 62 fixedly installed on the top of the cover plate 61, a transmission shaft 64 fixedly connected to the output end of the drive motor 62, crushing blades 69 fixedly connected to the outer surface of the transmission shaft 64, and a feeding frame 63 on the top of the cover plate 61; the top of the drying cylinder 2... The unit is equipped with a ventilated structure 7, which includes an annular filter plate 71. The annular filter plate 71 is fixedly connected to the top of the drying cylinder 2. By setting up the crushing, filtering and stirring structure 6, the large-volume kitchen waste and coal gangue lumps inside the mixing cylinder 1 can be crushed, thereby avoiding uneven mixing and blockage caused by large volume. At the same time, under the action of the filter disc 611, the crushed material is filtered, and unqualified material continues to be crushed. When maintenance is required, the cover plate 61 and other components can be disassembled for maintenance, making it convenient to clean or unblock internal parts, making the overall use more convenient. By setting up the ventilated structure 7, flammable and explosive gases generated by kitchen waste inside the drying cylinder 2 can be discharged, thereby preventing the accumulation of gases inside the drying cylinder 2 and thus avoiding safety hazards, improving the overall safety performance.

[0031] Going a step further, such as Figures 2-4As shown: A connecting block 68 is fixedly connected to the outer surface of the drive shaft 64. A rectangular connecting plate 65 is fixedly connected to the outer surface of the connecting block 68. An L-shaped scraper 66 is fixedly connected to the bottom of the rectangular connecting plate 65. An L-shaped scraper 67 is fixedly connected to one side of the rectangular connecting plate 65. A connecting rod 610 is fixedly connected to the bottom end of the drive shaft 64 by bolts. A filter plate 611 is rotatably connected to the outer surface of the connecting rod 610. An annular locking block 612 is fixedly connected to the bottom of the filter plate 611. An annular locking frame 614 is fixedly connected at the connection between the mixing cylinder 1 and the drying cylinder 2. A round insert rod 613 is fixedly connected to the bottom of the annular locking block 612. A round insertion hole 615 is opened on the inner wall of the annular locking frame 614. An auxiliary rotating rod 616 is fixedly connected to the bottom end of the connecting rod 610 by bolts. The auxiliary rotating rod 616 has a turning crossbar 617 fixedly connected to its outer surface, and a scraper 618 fixedly connected to its bottom end. Under the action of the drive shaft 64 and the crushing blade 69, the kitchen waste and coal gangue inside the mixing drum 1 can be mixed and crushed, so that the kitchen waste and coal gangue are mixed more evenly. At the same time, under the action of the filter circular plate 611 at the bottom, the kitchen waste and coal gangue of the correct size can be screened and fall into the drying drum 2 at the bottom. The kitchen waste and coal gangue that have not been crushed can be moved upward under the action of the L-shaped shovel 66, so as to circulate crushing and filtering. The turning crossbar 617 and the scraper 618 inside the drying drum 2 can mix the kitchen waste and coal gangue mixture that falls to the bottom and accelerate drying.

[0032] The above solutions also have the problem of internal blockages or component damage in mixing cylinder 1 and drying cylinder 2, making it impossible to maintain the sealed mixing cylinder 1 and drying cylinder 2. Figure 3 and Figure 4 As shown: In this scheme, a rectangular frame 619 is fixedly connected to one side of the mixing cylinder 1, a rectangular plate 620 is fixedly connected to one side of the cover plate 61, and a rectangular block 621 is fixedly connected to the bottom of the rectangular plate 620. A first screw hole 622 is opened on one side of the rectangular frame 619, and a second screw hole 623 is opened on one side of the rectangular block 621. A threaded rod 624 is threadedly connected to the inner wall of the first screw hole 622 and the second screw hole 623. The rectangular block 621 can cooperate with the rectangular frame 619 to disassemble the cover plate 61. When disassembling, it is necessary to use a disassembly tool to disassemble the auxiliary rotating rod 616 connected to the connecting round rod 610 through the discharge pipe 5 at the bottom. The opening of the discharge pipe 5 is enlarged, which can be used as a maintenance port during maintenance. At this time, the cover plate 61 can be disassembled, and then the interior can be maintained.

[0033] The above solutions also have the problem that flammable and explosive gases can easily accumulate inside the drying drum 2 due to food waste, potentially leading to an explosion. Figure 4 and Figure 5As shown, an annular baffle 72 is fixedly connected to the top of the drying cylinder 2, and an annular filter plate 71 is located inside the annular baffle 72. An annular block 73 is snapped into the inner wall of the top of the annular filter plate 71. An annular auxiliary plate 74 is fixedly connected to the top of the annular block 73, and an operating block 75 is fixedly connected to the outer surface of the annular auxiliary plate 74. The annular filter plate 71 can disperse flammable and explosive gases such as methane generated by kitchen waste inside the drying cylinder 2, preventing them from accumulating inside the drying cylinder 2 and causing an explosion. The annular block 73 and other components can seal the annular baffle 72, thereby preventing debris from falling into the interior of the annular baffle 72 when not in use.

[0034] Working principle:

[0035] like Figure 1-5 As shown:

[0036] In use: the cover plate 61 is snapped into the top of the mixing cylinder 1. At this time, the rectangular snap block 621 can be snapped into the rectangular snap frame 619 and then the threaded snap rod 624 is fixed to the first screw hole 622 and the second screw hole 623.

[0037] The annular locking block 612 at the bottom of the filter disc 611 can be engaged with the annular locking frame 614, thereby allowing the circular insertion rod 613 to be inserted into the inner wall of the circular insertion hole 615. At this time, the auxiliary rotating rod 616 at the bottom and the connecting circular rod 610 are fixed with bolts. It should be noted that the material turning crossbar 617 and the auxiliary rotating rod 616, as well as the scraper plate 618 and the auxiliary rotating rod 616, are all fixed with bolts. The operation, installation and maintenance can be carried out through the discharge pipe 5 at the bottom. After installation, the solenoid valve is installed with the discharge pipe 5.

[0038] At this time, the drive motor 62 is started, so that the transmission shaft 64 can drive the connecting rod 610 to rotate, and at the same time drive the crushing blade 69 to rotate, thereby crushing the kitchen waste and coal gangue entering from the feed frame 63. Then, the qualified mixture can be filtered to the bottom through the bottom filter plate 611, and the larger mixture can be continued to be transmitted upward through the L-shaped shovel 66 for crushing. The L-shaped scraper 67 can prevent the mixture from adhering to the inside of the mixing cylinder 1.

[0039] The connecting rod 610 can drive the auxiliary rotating rod 616 to rotate, which in turn drives the turning crossbar 617 to rotate, which in turn drives the scraper 618 to rotate, which in turn turns the mixture inside the drying cylinder 2 at the bottom. At the same time, the drying equipment 3 is started by the controller 9 to carry out the drying process. At this time, the annular block 73 is separated from the annular baffle 72, and the gas can be discharged through the annular filter plate 71.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A device for preparing eco-soil based on coal gangue from kitchen waste, comprising a mixing cylinder (1), characterized in that, The bottom of the mixing cylinder (1) is fixedly connected to the drying cylinder (2), the outside of the drying cylinder (2) is provided with a drying device (3), a controller (9) is installed on one side of the drying device (3), the bottom of the drying cylinder (2) is provided with a funnel-shaped groove (8), the bottom of the drying cylinder (2) is fixedly connected with a support leg (4), the bottom of the drying cylinder (2) is provided with a discharge pipe (5), and a solenoid valve is provided inside the discharge pipe (5); The mixing cylinder (1) and the drying cylinder (2) are provided with a crushing, filtering and stirring structure (6). The crushing, filtering and stirring structure (6) includes a cover plate (61). A drive motor (62) is fixedly installed on the top of the cover plate (61). A transmission shaft (64) is fixedly connected to the output end of the drive motor (62). A crushing blade (69) is fixedly connected to the outer surface of the transmission shaft (64). A feed frame (63) is provided on the top of the cover plate (61). The top of the drying cylinder (2) is provided with a breathable structure (7), which includes an annular filter plate (71) and is fixedly connected to the top of the drying cylinder (2).

2. The preparation device of the coal gangue-based ecological soil from kitchen waste according to claim 1, characterized in that: A connecting block (68) is fixedly connected to the outer surface of the drive shaft (64), a rectangular connecting plate (65) is fixedly connected to the outer surface of the connecting block (68), an L-shaped shovel plate (66) is fixedly connected to the bottom of the rectangular connecting plate (65), and an L-shaped scraper plate (67) is fixedly connected to one side of the rectangular connecting plate (65).

3. The preparation device of the coal gangue-based ecological soil from kitchen waste according to claim 1, characterized in that: The bottom end of the drive shaft (64) is fixedly connected to a connecting rod (610) by a bolt structure, and a filter disc (611) is rotatably connected to the outer surface of the connecting rod (610).

4. The preparation device of the kitchen waste coal gangue-based ecological soil according to claim 3, characterized in that: The bottom of the filter disc (611) is fixedly connected to an annular locking block (612), and the connection between the mixing cylinder (1) and the drying cylinder (2) is fixedly connected to an annular locking frame (614). The bottom of the annular locking block (612) is fixedly connected to a round insert rod (613), and the inner wall of the annular locking frame (614) is provided with a round insert hole (615).

5. The preparation device of the kitchen waste coal gangue-based ecological soil according to claim 3, characterized in that: The bottom end of the connecting rod (610) is fixedly connected to an auxiliary rotating rod (616) by a bolt structure. The outer surface of the auxiliary rotating rod (616) is fixedly connected to a material turning crossbar (617), and the bottom end of the auxiliary rotating rod (616) is fixedly connected to a scraper plate (618).

6. The preparation device of the coal gangue-based ecological soil from kitchen waste according to claim 1, characterized in that: A rectangular frame (619) is fixedly connected to one side of the mixing cylinder (1), a rectangular plate (620) is fixedly connected to one side of the cover plate (61), a rectangular block (621) is fixedly connected to the bottom of the rectangular plate (620), a first screw hole (622) is provided on one side of the rectangular frame (619), a second screw hole (623) is provided on one side of the rectangular block (621), and a threaded rod (624) is threadedly connected to the inner wall of the first screw hole (622) and the second screw hole (623).

7. The preparation device of the coal gangue-based ecological soil from kitchen waste according to claim 1, characterized in that: The top of the drying cylinder (2) is fixedly connected with an annular baffle (72), the annular filter plate (71) is located inside the annular baffle (72), the top inner wall of the annular filter plate (71) is clamped with an annular block (73), the top of the annular block (73) is fixedly connected with an annular auxiliary plate (74), and the outer surface of the annular auxiliary plate (74) is fixedly connected with an operating block (75).