Landfill structure for stabilizing fly ash

Abstract

The invention 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] The invention relates to the technical field of fly ash landfill, and in particular to a landfill structure for stabilized fly ash. Background Art

[0002] Currently, the incineration of industrial and domestic waste generates a large amount of fly ash. To avoid environmental pollution, landfill is typically used. For example, CN 219702952 U discloses a landfill structure for stabilized fly ash. The structure comprises a foundation pit, a landfill area, an impermeable layer, a regulating unit, and a feed assembly. The impermeable layer is arranged at the bottom of the landfill area; the regulating unit is arranged on the foundation pit, and a material box and a drive box are mounted on the upper surface of the regulating unit. The feed assembly includes a guide unit and an actuator unit. The guide unit is arranged between the material box and the drive box, and one end of the actuator unit is connected to the material box. The actuator unit is also slidably connected to the guide unit to deposit the fly ash at a designated location. When landfilling the fly ash, this structure uses the provided feed assembly and regulating unit to sequentially deliver the fly ash to the designated location. A shielding cloth is also used to prevent dust from being generated during the transport of the fly ash. However, there is a problem: if the fly ash is directly landfilled, the heavy metal elements in the fly ash will have a significant impact on the soil environment. Summary of the Invention

[0003] The purpose of the present invention is to provide a landfill structure for stabilized fly ash that is rational in structure and reliable in use to solve the above-mentioned problems. Compared with the existing technology, 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 the present invention is: A landfill structure for stabilized 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 in the longitudinal direction, a Y-axis movable plate connected to the sliders of the two Y-axis linear modules, two X-axis linear modules provided on the Y-axis movable plate and parallel to each other, and an X-axis movable plate connected to the sliders of the two X-axis linear modules; the mixing chamber is supported above the X-axis movable plate; a feeding port for fly ash, chelating agent solution, and cement is provided at the top of the mixing chamber; a avoidance hole is provided in the center of the X-axis movable plate corresponding to the discharge port of the mixing chamber; an X-axis avoidance opening is provided on the Y-axis movable plate corresponding to the discharge port; a rear end of the Y-axis movable plate is connected to a lifting mechanism; a scraper plate for insertion into the landfill pit is connected to the lower portion of the lifting mechanism; the scraper plate is parallel to the width direction of the landfill pit, and a set horizontal gap is formed between the ends of the scraper plate and the two side walls of the landfill pit in the width direction.

[0005] The above-mentioned landfill structure of stabilized fly ash, the lifting mechanism includes two right-angle supports symmetrically arranged on the rear end face of the Y-direction movable plate, a longitudinal electric push rod inverted on the horizontal plane of the right-angle supports, and 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.

[0006] In the above-mentioned landfill structure for stabilized fly ash, connecting rods are respectively provided at the front and rear ends of the two Y-direction linear modules.

[0007] In the above-mentioned landfill structure for stabilized fly ash, the bottom and side walls of the landfill pit are pre-paved with an anti-seepage layer.

[0008] The beneficial effects of the present invention are: 1. The fly ash, chelating agent solution and cement are mixed in proportion in advance through the mixing chamber. After uniform mixing, a stabilized product is formed. The heavy metals in the fly ash are fully captured. The mobile support structure is then used to drive the mixing chamber to move in the X and Y directions above the landfill pit to orderly fill the stabilized product into the landfill pit. The stabilized product can be stable for a long time, greatly reducing the possibility of heavy metal elements leaching, thereby greatly reducing the impact of heavy metal elements on the soil environment.

[0009] 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 it moves in the Y-axis, it realizes the scraping operation of the stabilized product, eliminating the need for manual scraping, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 yes Figure 1 A top view of Figure 3 yes Figure 1 Side view of the lifting mechanism.

[0011] In the figure: 1. Feeding port, 2. Mixing chamber, 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 plate, 9. Y-axis linear module, 10. Landfill pit, 11. Anti-seepage layer, 12. Connecting rod. DETAILED DESCRIPTION

[0012] The present invention is described in detail with reference to the accompanying drawings.

[0013] like Figures 1 to 3 As shown, the landfill structure of the stabilized fly ash includes a mobile support structure and a mixing bin 2.

[0014] The movable support structure includes Y-axis linear modules 9 arranged on the left and right sides of the landfill pit 10 along its length, a Y-axis movable plate 3 connected to the sliders of the two Y-axis linear modules 9, two X-axis linear modules 4 mounted parallel to and on the Y-axis movable plate 3, and an X-axis movable plate 7 connected to the sliders of the two X-axis linear modules 4. In this embodiment, connecting rods 12 are provided at the front and rear ends of the two Y-axis linear modules 9, respectively.

[0015] The mixing chamber 2 is supported above an X-moving plate 7. A feeding port 1 for fly ash, chelating agent solution, and cement is provided at the top of the mixing chamber 2. A clearance hole corresponding to the discharge port of the mixing chamber 2 is provided in the center of the X-moving plate 7. The Y-moving plate 3 is provided with an X-moving clearance opening corresponding to the discharge port.

[0016] The rear end of the Y-moving plate 3 is connected to a lifting mechanism. A scraper plate 8, designed to be inserted into the landfill pit 10, is connected to the lower portion of the lifting mechanism. The scraper plate 8 is parallel to the width of the landfill pit 10, and a predetermined horizontal gap is maintained between the ends of the scraper plate 8 and the widthwise side walls of the landfill pit 10. In this embodiment, the lifting mechanism comprises two right-angle supports 6 symmetrically positioned on the rear end of the Y-moving plate 3, and a longitudinal electric push rod 5 inverted on the horizontal plane of the right-angle supports 6. The upper edge of the scraper plate 8 is fixedly connected to the lower end of the telescopic portion of the longitudinal electric push rod 5.

[0017] In this embodiment, before the landfill pit 10 is filled, an anti-seepage layer 11 is laid on the bottom and side walls.

[0018] Working principle: 1. During initial operation, the Y-direction movable plate 3 is located above the rear end of the landfill pit 10 in the longitudinal direction, and the X-direction movable plate 7 is located above the leftmost portion of the Y-direction movable plate 3 .

[0019] 2. Start the X-direction linear module 4 to 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 direction of the landfill pit 10.

[0020] 3. Start the Y-direction linear module 9 to drive the Y-direction movable plate 3, the X-direction linear module 4, the X-direction movable plate 7 and the mixing chamber 2 to move along the Y-direction. During this process, the scraper plate 8 is used to scrape the previously landfilled stabilized product.

[0021] 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 direction of the landfill pit 10 again.

[0022] 5. Repeat step 3, and so on, to complete the entire landfill operation.

[0023] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A landfill structure for stabilized fly ash, comprising a mobile support structure and a mixing bin, characterized in that: The movable support structure includes Y-axis linear modules arranged on the left and right sides of the landfill pit in the longitudinal direction, a Y-axis movable plate connected to the sliders of the two Y-axis linear modules, two X-axis linear modules provided on the Y-axis movable plate and parallel to each other, and an X-axis movable plate connected to the sliders of the two X-axis linear modules. The mixing bin is supported above the X-axis movable plate. The top of the mixing bin is provided with a feeding port for fly ash, chelating agent solution and cement. The center of the X-axis movable plate is provided with an avoidance hole corresponding to the discharge port of the mixing bin. The Y-axis movable plate is provided with an X-axis avoidance passage corresponding to the discharge port. The rear end of the Y-axis movable plate is connected to a lifting mechanism. The lower part of the lifting mechanism is connected to a scraper plate for insertion into the landfill pit. The scraper plate is parallel to the width direction of the landfill pit, and a set horizontal gap is formed between the two ends of the scraper plate and the two side walls in the width direction of the landfill pit.

2. The landfill structure for stabilized fly ash according to claim 1, characterized in that: The lifting mechanism includes two right-angle supports symmetrically arranged on the rear end surface of the Y-direction movable 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.

3. The landfill structure for stabilized fly ash according to claim 1, characterized in that: Connecting rods are respectively provided at the front and rear ends of the two Y-direction linear modules.

4. The landfill structure for stabilized fly ash according to claim 1, characterized in that: The bottom surface and side walls of the landfill pit are pre-paved with an anti-seepage layer.

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