Landfill structure for stabilizing fly ash

Abstract

The utility model relates to a stabilized fly ash landfill structure which comprises a movable supporting structure and a stirring bin. According to the technical scheme, the movable supporting structure comprises Y-direction linear modules arranged on the left side and the right side of a landfill pit, a Y-direction moving plate connected with sliding blocks of the two Y-direction linear modules, two X-direction linear modules arranged on the Y-direction moving plate and parallel to each other, and an X-direction moving plate connected with sliding blocks of the two X-direction linear modules, and the stirring bin is supported above the X-direction moving plate; the center of the X-direction moving plate is provided with an avoiding hole corresponding to a discharging opening of the stirring bin, the Y-direction moving plate is provided with an X-direction avoiding through opening corresponding to the discharging opening, the rear end of the Y-direction moving plate is connected with a lifting mechanism, and the lower portion of the lifting mechanism is connected with a scraping plate used for being inserted into a landfill pit. Compared with the prior art, the structure has the advantages that fly ash is firstly stabilized, and then stabilized products are orderly filled in the landfill pit, so that the influence of heavy metal elements on the soil environment is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of fly ash landfill technology, specifically to a landfill structure for stabilizing fly ash. Background Technology

[0002] Currently, the incineration of municipal and industrial waste generates a large amount of fly ash, which is typically disposed of through landfill to avoid environmental pollution. For example, CN 219702952 U discloses a landfill structure for stabilizing fly ash, comprising a foundation pit, a landfill area, an impermeable layer, a regulating unit, and a conveying assembly. The impermeable layer is located at the bottom of the landfill area; the regulating unit is located on the foundation pit, with a material hopper and a drive box mounted on its upper surface; the conveying assembly includes a guiding unit and an execution unit, wherein the guiding unit is located between the material hopper and the drive box, one end of the execution unit is connected to the material hopper, and the execution unit is also slidably connected to the guiding unit to drop the fly ash into a designated location. This structure, when landfilling fly ash, allows the conveying assembly and regulating unit to sequentially deliver the fly ash to the designated location, and with the aid of a shielding cloth, dust generation is minimized during fly ash transport. However, the following problems exist: directly landfilling fly ash results in heavy metal elements in the fly ash having a significant impact on the soil environment. Utility Model Content

[0003] The purpose of this invention is to provide a landfill structure for stabilized fly ash that is structurally sound and reliable in use, which solves the above-mentioned problems. Compared with the prior art, the fly ash is first stabilized, and then the stabilized products are orderly filled into the landfill pit, which greatly reduces the impact of heavy metal elements on the soil environment.

[0004] The technical solution of this utility model is:

[0005] A landfill structure for stabilizing fly ash includes a movable support structure and a mixing chamber. The key technical features are as follows: the movable support structure includes Y-axis linear modules arranged on the left and right sides of the landfill pit along its length; a Y-axis moving plate connected to sliders of the two Y-axis linear modules; two X-axis linear modules arranged on the Y-axis moving plate and parallel to each other; and an X-axis moving plate connected to sliders of the two X-axis linear modules. The mixing chamber is supported above the X-axis moving plates. The top of the mixing chamber has inlets for feeding fly ash, chelating agent solution, and cement. The center of the X-axis moving plate has a clearance hole corresponding to the discharge port of the mixing chamber. The Y-axis moving plate has an X-axis clearance opening corresponding to the discharge port. A lifting mechanism is connected to the rear end of the Y-axis moving plate. A scraper for inserting into the landfill pit is connected to the lower part of the lifting mechanism. The scraper is parallel to the width direction of the landfill pit, and there is a predetermined horizontal gap between the two ends of the scraper and the two side walls of the landfill pit along its width direction.

[0006] The aforementioned landfill structure for stabilized fly ash includes a lifting mechanism comprising two right-angle supports symmetrically arranged on the rear end face of the Y-direction moving plate, and a longitudinal electric push rod inverted on the horizontal plane of the right-angle supports. The upper edge of the scraper plate is connected and fixed to the lower end of the telescopic part of the longitudinal electric push rod.

[0007] In the aforementioned landfill structure for stabilizing fly ash, connecting rods are provided at the front and rear ends of the two Y-direction linear modules.

[0008] In the aforementioned landfill structure for stabilized fly ash, the bottom and sidewalls of the landfill pit are pre-laid with an impermeable layer.

[0009] The beneficial effects of this utility model are:

[0010] 1. Fly ash, chelating agent solution and cement are mixed together in a mixing chamber in a certain proportion. After uniform mixing, a stabilized product is formed. Heavy metals in the fly ash are fully captured. Then, the mixing chamber is moved along the X and Y directions above the landfill pit by a moving support structure to orderly fill the landfill pit with the stabilized product. The stabilized product can be stable for a long time, which greatly reduces the possibility of heavy metal leaching, thereby greatly reducing the impact of heavy metals on the soil environment.

[0011] 2. After the stabilized product is placed in the landfill pit, when the Y-axis moving plate moves forward, the lifting mechanism first drives the scraper plate downward, and then, when moving in the Y-axis, it realizes the scraping operation of the stabilized product, which does not require manual scraping, saving time and effort. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 yes Figure 1 Top view;

[0014] Figure 3 yes Figure 1 Side view of the lifting mechanism.

[0015] In the diagram: 1. Feeding port, 2. Mixing bin, 3. Y-axis moving plate, 4. X-axis linear module, 5. Longitudinal electric push rod, 6. Right-angle support, 7. X-axis moving plate, 8. Scraper, 9. Y-axis linear module, 10. Landfill pit, 11. Impermeable layer, 12. Connecting rod. Detailed Implementation

[0016] The present invention will be described in detail with reference to the accompanying drawings.

[0017] like Figures 1-3 As shown, the landfill structure for stabilizing fly ash includes a movable support structure and a mixing chamber 2.

[0018] The movable support structure includes Y-direction linear modules 9 arranged on the left and right sides of the landfill pit 10 along its length, a Y-direction moving plate 3 connected to the sliders of the two Y-direction linear modules 9, two X-direction linear modules 4 arranged on the Y-direction moving plate 3 and parallel to each other, and an X-direction moving plate 7 connected to the sliders of the two X-direction linear modules 4. In this embodiment, connecting rods 12 are respectively provided at the front and rear ends of the two Y-direction linear modules 9.

[0019] The mixing chamber 2 is supported above the X-axis moving plate 7, and the top of the mixing chamber 2 is provided with feeding ports 1 for fly ash, chelating agent solution and cement. The center of the X-axis moving plate 7 is provided with a clearance hole corresponding to the discharge port of the mixing chamber 2, and the Y-axis moving plate 3 is provided with an X-axis clearance passage corresponding to the discharge port.

[0020] The rear end of the Y-axis moving plate 3 is connected to a lifting mechanism. The lower part of the lifting mechanism is connected to a scraper plate 8 for insertion into the landfill pit 10. The scraper plate 8 is parallel to the width direction of the landfill pit 10, and there is a predetermined horizontal gap between both ends of the scraper plate 8 and the two side walls of the landfill pit 10 in the width direction. In this embodiment, the lifting mechanism includes two right-angle supports 6 symmetrically arranged on the rear end face of the Y-axis moving plate 3, and a longitudinal electric push rod 5 inverted on the horizontal surface of the right-angle supports 6. The upper edge of the scraper plate 8 is connected and fixed to the lower end of the telescopic portion of the longitudinal electric push rod 5.

[0021] In this embodiment, before the landfill pit 10 is filled, an impermeable layer 11 is laid on the bottom and side walls.

[0022] Working principle:

[0023] 1. When the Y-axis moving plate 3 is initially working, it is located above the rear end of the landfill pit 10 along its length, and the X-axis moving plate 7 is located above the leftmost side of the Y-axis moving plate 3.

[0024] 2. Start the X-direction linear module 4, which drives the X-direction moving plate 7 and the mixing chamber 2 to move along the X direction, and fill the stabilized product along the width of the landfill pit 10.

[0025] 3. Start the Y-direction linear module 9, which drives the Y-direction moving plate 3, the X-direction linear module 4, the X-direction moving plate 7 and the mixing chamber 2 to move along the Y direction. During this process, the previously landfilled stabilized products are scraped flat by the scraper plate 8.

[0026] 4. Repeat step 2, start the X-direction linear module 4, drive the X-direction moving plate 7 and the mixing chamber 2 to move along the X direction, and fill the stabilized product along the width of the landfill pit 10 again.

[0027] 5. Repeat step 3, and so on, to complete the entire landfill operation.

[0028] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A stabilized fly ash landfill structure comprising a mobile support structure and a mixing bin, characterized by: The mobile support structure comprises Y-direction linear modules arranged on the left and right sides of the landfill pit length direction, Y-direction mobile plates connected with the sliders of the two Y-direction linear modules, two X-direction linear modules arranged on the Y-direction mobile plates and parallel to each other, X-direction mobile plates connected with the sliders of the two X-direction linear modules, and a stirring bin supported above the X-direction mobile plates, wherein the top of the stirring bin is provided with feeding ports for fly ash, chelating agent solution and cement, the center of the X-direction mobile plate is provided with an avoiding hole corresponding to the discharge port of the stirring bin, the Y-direction mobile plate is provided with X-direction avoiding through holes corresponding to the discharge port, the rear end of the Y-direction mobile plate is connected with a lifting mechanism, the lower part of the lifting mechanism is connected with a scraping plate for insertion into the landfill pit, the scraping plate is parallel to the width direction of the landfill pit, and the scraping plate has a set horizontal gap between the two ends and the two side walls of the width direction of the landfill pit.

2. The stabilized fly ash landfill structure of claim 1, wherein: The lifting mechanism comprises two right-angle supports symmetrically arranged on the rear end face of the Y-direction mobile plate and a longitudinal electric push rod inverted on the horizontal plane of the right-angle supports, and the scraping plate is fixedly connected with the lower end of the telescopic part of the longitudinal electric push rod.

3. The stabilized fly ash landfill structure of claim 1, wherein: The front and rear ends of the two Y-direction linear modules are respectively provided with connecting rods.

4. The stabilized fly ash landfill structure of claim 1, wherein: The bottom surface and the side wall of the landfill pit are pre-laid with an anti-seepage layer.

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