Soil remediation equipment for abandoned mining area

Abstract

The utility model discloses soil remediation equipment for an abandoned mining area, and relates to the technical field of soil remediation. The soil remediation equipment for the abandoned mining area comprises a well casing, a connecting pipe, a pressure meter, a flow meter, a gas-liquid separator and a vacuum pump, and a filter plate corresponding to a filter hole in position is arranged in the well casing. According to the device, multiple sets of reinforcing pieces are fixedly arranged in the well casing, so that the overall supporting strength of the well casing is improved, scraping plates capable of rotating in a reciprocating mode are arranged in cavities of the reinforcing pieces, the scraping plates can conduct unblocking operation on filter plates at the positions of filter holes of the well casing, excessive waste soil is prevented from being accumulated in the well casing, the burden of the well casing is relieved, and the service life of the well casing is prolonged. Meanwhile, smooth flowing of airflow at the well casing and the filter plate is ensured, so that the soil remediation rate of the abandoned mining area is stable.

Description

Technical Field

[0001] This utility model relates to the field of soil remediation technology, specifically to a soil remediation device for abandoned mining areas. Background Technology

[0002] In regions like Inner Mongolia, once mineral resources are fully developed, there are no resources left to reuse in the mining areas, leading to their abandonment. During the resource development process, the soil in the mining areas becomes contaminated with heavy metals, organic matter, and acids and alkalis. The contaminated soil cannot meet the growth needs of plants, resulting in low vegetation coverage and severe soil erosion in the region.

[0003] Existing soil remediation methods are tailored to the specific nature of soil pollution. For example, for organic pollution, soil vapor phase extraction (SPE) technology is used. Specifically, a well pipe is inserted into the soil of an abandoned mining area, and a vacuum pump is used to create negative pressure. As air flows through the polluted area, it desorbs and carries away volatile and semi-volatile organic pollutants from the soil pores. These pollutants are then collected in the well pipe and finally treated, achieving the goal of purifying the vadose zone soil. However, when the well pipe is inserted into the soil of an abandoned mining area, the deformation caused by soil expansion or contraction can compress or stretch the well pipe, leading to damage due to external pressure. This affects the smooth flow of air in the soil and the well pipe, thus affecting the soil remediation rate of the abandoned mining area. To address the shortcomings of existing technologies, we propose a soil remediation device for abandoned mining areas to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a soil remediation device for abandoned mining areas. It solves the problem that when a well pipe is inserted into the soil of an abandoned mining area, the deformation caused by soil expansion or contraction will squeeze or stretch the well pipe, resulting in damage to the well pipe due to external pressure. This affects the smooth flow of air in the soil and the well pipe, thereby affecting the soil remediation rate of the abandoned mining area.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a soil remediation device for abandoned mining areas, comprising a well pipe, a connecting pipe, a gas-liquid separator, and a vacuum pump. The well pipe contains a filter plate corresponding to the filter holes, and the well pipe also contains a reinforcing mechanism, which includes:

[0006] The first and second reinforcing members are fixedly installed on the inner wall of the well pipe, and both the first and second reinforcing members have cavities inside.

[0007] The scraper, support rod and first gear are combined and rotatably disposed inside the cavity, with one end of the scraper abutting against one side of the filter plate;

[0008] A shaft is rotatably connected to a connecting pipe, and a second gear that meshes with multiple sets of first gears is fixedly connected to one end of the shaft that passes through the outer wall of the first reinforcing member.

[0009] A drive motor is fixedly connected to one end of a shaft located outside a connecting pipe, and a protective frame for supporting the drive motor is fixedly connected to the outer wall of the connecting pipe.

[0010] Preferably, a mounting cavity for mounting multiple sets of first gears and second gears is formed between the first reinforcing member and the second reinforcing member.

[0011] Preferably, one end of the shaft extending into the mounting cavity is rotatably disposed on the top surface of the second reinforcing member, and a support member for supporting the support rod is fixedly connected inside the mounting cavity.

[0012] Preferably, the first and second reinforcing members are fixedly connected to a reinforcing block at one end near the inner wall of the well pipe, the outer wall of the reinforcing block is fixedly connected to the inner wall of the well pipe, and the filter plate is fixedly disposed between two adjacent sets of reinforcing blocks.

[0013] Preferably, the filter plate is fixedly disposed at one end of the cavity near the well pipe filter hole.

[0014] Preferably, the bottom end of the well pipe is fixedly connected to multiple sets of arc-shaped guide plates, and the bottom ends of the multiple sets of arc-shaped guide plates are formed with openings.

[0015] Preferably, a pressure gauge and a flow meter are fixedly installed on the outer wall of the connecting pipe.

[0016] This utility model discloses a soil remediation device for abandoned mining areas, which has the following beneficial effects: This soil remediation device for abandoned mining areas increases the overall support strength of the well pipe by fixing multiple sets of reinforcing members inside the well pipe. A scraper that can reciprocate and rotate is set in the cavity of the reinforcing member, so that the scraper can clear the filter plate at the filter hole of the well pipe, avoid excessive waste soil accumulation inside the well pipe, reduce the burden on the well pipe, and ensure smooth airflow at the well pipe and filter plate, so as to stabilize the soil remediation rate of abandoned mining areas. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the internal structure of the well casing of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the well pipe and the filter plate of this utility model;

[0021] Figure 4 This is a plan view of the structure of the first reinforcing member, scraper, and filter plate of this utility model;

[0022] Figure 5 Exploded views of the first reinforcing member, the second reinforcing member, and the scraper structure of this utility model;

[0023] Figure 6 This is a plan view of the first and second gears of this utility model;

[0024] Figure 7 This is a schematic diagram of the connection structure between the well pipe and the arc-shaped guide plate of this utility model.

[0025] In the diagram: 1. Well casing; 2. Connecting pipe; 21. Pressure gauge; 22. Flow meter; 3. Gas-liquid separator; 4. Vacuum pump; 5. Filter plate; 6. Reinforcing mechanism; 61. First reinforcing member; 62. Second reinforcing member; 63. Cavity; 64. Scraper; 65. Support rod; 66. First gear; 67. Shaft; 68. Second gear; 69. Drive motor; 691. Protective frame; 7. Reinforcing block; 8. Arc-shaped guide plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] This application provides a soil remediation device for abandoned mining areas, which solves the problem that when a well pipe is inserted into the soil of an abandoned mining area, the deformation caused by soil expansion or contraction will squeeze or stretch the well pipe, resulting in damage to the well pipe due to external pressure, affecting the smooth flow of air in the soil and the well pipe, and thus affecting the soil remediation rate of the abandoned mining area. The device increases the overall strength of the well pipe.

[0028] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0029] This utility model discloses a soil remediation device for abandoned mining areas.

[0030] According to the appendix Figure 1-7 As shown, the equipment includes a well pipe 1, a connecting pipe 2 fixedly connected to one end of the well pipe 1, a gas-liquid separator 3 fixedly connected to one end of the connecting pipe 2, and a vacuum pump 4 fixedly connected to the gas-liquid separator 3 via the fixed pipe. A filter plate 5 corresponding to the filter holes is installed inside the well pipe 1. A pressure gauge 21 and a flow meter 22 are fixedly installed on the outer wall of the connecting pipe 2. The well pipe 1, connecting pipe 2, pressure gauge 21, flow meter 22, gas-liquid separator 3, vacuum pump 4, waste gas treatment device, and wastewater treatment device constitute the equipment required for soil gas phase extraction technology. The equipment is mainly installed on the ground. The waste gas treatment device and wastewater treatment device are not specifically shown in the attached drawing. The exhaust gas treatment device and wastewater treatment device are each connected to one side of the vacuum pump 4 via a set of delivery pipes. Specifically, the well pipe is inserted into the soil to be remediated in the abandoned mining area, and then the vacuum pump 4 is turned on. The vacuum pump 4 draws out negative pressure, and when the air flows through the polluted area in the soil, it desorbs and carries away the volatile and semi-volatile organic pollutants in the soil pores. The airflow carries them away, and after being collected by the well pipe 1, it is first transported to the interior of the gas-liquid separator 3 through the connecting pipe 2 to complete the separation of gas and liquid. Then, the recovered and separated gas and liquid are purified by the exhaust gas treatment device and wastewater treatment device, thereby achieving the purpose of purifying the soil. In addition, during the extraction, an air injection well can be set up to manually introduce clean air into the soil.

[0031] See attached document Figure 2-6 The well pipe 1 is internally equipped with a reinforcing mechanism 6. This mechanism increases the overall strength of the well pipe 1, preventing deformation after insertion into the soil of an abandoned mining area. The reinforcing mechanism 6 includes a first reinforcing member 61 and a second reinforcing member 62. Both the first and second reinforcing members 61 and 62 can be made of materials such as reinforcing ribs, selected according to actual needs. Both the first and second reinforcing members 61 and 62 are fixedly installed on the inner wall of the well pipe 1, and each has a cavity 63 inside. A reinforcing block 7 is fixedly connected to one end of the reinforcing member 61 and the second reinforcing member 62 near the inner wall of the well pipe 1. The outer wall of the reinforcing block 7 is fixedly connected to the inner wall of the well pipe 1. The filter plate 5 is fixedly disposed between two adjacent sets of reinforcing blocks 7. The filter plate 5 is fixedly disposed at one end of the cavity 63 near the filter hole of the well pipe 1. The scraper 64 is fixedly disposed on the outer wall of the support rod 65, and a first gear 66 is fixedly connected to one end of the outer wall of the support rod 65. The scraper 64 is rotatably disposed inside the cavity 63. The rotation distance of the scraper 64 is limited by the space range of the cavity 63, and one end of the scraper 64 abuts against one side of the filter plate 5.

[0032] See attached document Figure 2 and attached Figure 6The shaft 67 is rotatably connected to the connecting pipe 2. The outer wall of the end of the shaft 67 that passes through the first reinforcing member 61 is fixedly connected to a second gear 68 that meshes with multiple sets of first gears 66. The drive motor 69 is fixedly connected to the end of the shaft 67 located outside the connecting pipe 2. The outer wall of the connecting pipe 2 is fixedly connected to a protective frame 691 for supporting the drive motor 69. Specifically, after the well pipe 1 is inserted into the waste soil, some soil will accumulate in the filter plate 5. At this time, by turning on the drive motor 69, the drive motor 69 controls the shaft 67 to reciprocate according to the set parameters, thereby driving the second gear 68 to rotate equally. At this time, under the meshing of the second gear 68 and multiple sets of first gears 66, the scraper 64 fixedly connected to the first gear 66 through the support rod 65 can be driven to reciprocate inside the cavity 63, so that the scraper 64 can perform a cleaning operation on the filter plate 5, avoiding excessive waste soil accumulation inside the well pipe 1, reducing the burden on the well pipe 1, and ensuring smooth airflow at the well pipe 1 and the filter plate 5.

[0033] See attached document Figure 5 A mounting cavity for mounting multiple sets of first gears 66 and second gears 68 is formed between the first reinforcing member 61 and the second reinforcing member 62. One end of the shaft 67 extending into the mounting cavity is rotatably disposed on the top surface of the second reinforcing member 62. A support member for supporting the support rod 65 is fixedly connected inside the mounting cavity.

[0034] See attached document Figure 7 Multiple sets of arc-shaped guide plates 8 are fixedly connected to the bottom end of the well pipe 1, which reduces resistance when the well pipe 1 is inserted into the waste soil, and at the same time reduces the amount of waste soil entering the interior of the well pipe 1 through the holes at the bottom end of the well pipe 1. The bottom ends of the multiple sets of arc-shaped guide plates 8 have openings, and the waste soil cleaned from the surface of the filter plate 5 can be discharged into the interior of the well pipe 1 through the openings.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A soil remediation device for abandoned mining areas, comprising a well pipe (1), a connecting pipe (2), a gas-liquid separator (3), and a vacuum pump (4), wherein the well pipe (1) is internally provided with a filter plate (5) corresponding to the position of the filter holes, characterized in that, The well casing (1) is internally provided with a reinforcing mechanism (6), which includes: The first reinforcing member (61) and the second reinforcing member (62) are fixedly installed on the inner wall of the well pipe (1), and both the first reinforcing member (61) and the second reinforcing member (62) have cavities (63) inside. The scraper (64), the support rod (65) and the first gear (66) are combined and rotatably disposed inside the cavity (63), and one end of the scraper (64) abuts against one side of the filter plate (5); A shaft (67) is rotatably connected to a connecting pipe (2). The shaft (67) is fixedly connected to a second gear (68) that meshes with multiple sets of first gears (66) at the same time through the outer wall of one end of the first reinforcing member (61). A drive motor (69) is fixedly connected to one end of a shaft (67) located outside a connecting pipe (2), and a protective frame (691) for supporting the drive motor (69) is fixedly connected to the outer wall of the connecting pipe (2).

2. The equipment for soil remediation in abandoned mining areas according to claim 1, characterized in that: A mounting cavity for mounting multiple sets of first gears (66) and second gears (68) is formed between the first reinforcing member (61) and the second reinforcing member (62).

3. The equipment for soil remediation in abandoned mining areas according to claim 2, characterized in that: One end of the shaft (67) extending into the mounting cavity is rotatably mounted on the top surface of the second reinforcing member (62), and a support member for supporting the support rod (65) is fixedly connected inside the mounting cavity.

4. The equipment for soil remediation in abandoned mining areas according to claim 1, characterized in that: The first reinforcing member (61) and the second reinforcing member (62) are fixedly connected to a reinforcing block (7) at one end near the inner wall of the well pipe (1). The outer wall of the reinforcing block (7) is fixedly connected to the inner wall of the well pipe (1). The filter plate (5) is fixedly arranged between two adjacent sets of reinforcing blocks (7).

5. The equipment for soil remediation in abandoned mining areas according to claim 4, characterized in that: The filter plate (5) is fixedly installed at one end of the cavity (63) near the filter hole of the well pipe (1).

6. The equipment for soil remediation in abandoned mining areas according to claim 1, characterized in that: The bottom end of the well pipe (1) is fixedly connected to multiple sets of arc-shaped guide plates (8), and the bottom ends of the multiple sets of arc-shaped guide plates (8) are formed with openings.

7. The equipment for soil remediation in abandoned mining areas according to claim 1, characterized in that: A pressure gauge (21) and a flow meter (22) are fixedly installed on the outer wall of the connecting pipe (2).

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