Soil pollution control device and method

Abstract

The invention relates to a soil pollution control device and method.The soil pollution control device comprises a base, a container arranged on the base and used for storing repairing liquid and a liquid conveying pump connected with the container, a box is arranged on the base, a hollow worm is rotationally connected to the top wall of the box, and the hollow worm is in transmission connection with a worm wheel rotationally connected with the box; a connecting rod is eccentrically and rotationally connected to the worm wheel, a lifting plate vertically and slidably connected with the box body is hinged to the lower end of the connecting rod, a hollow drill bit is arranged on the lifting plate, liquid outlet holes are distributed in the lower end of the hollow drill bit, and a liquid guide pipe connected with a liquid conveying pump is rotationally connected to the upper end of a hollow worm; a spline is arranged on the lower portion of the hollow worm, and a spline groove matched with the spline is formed in the inner wall of the hollow drill bit. According to the soil remediation device, remediation liquid enters the soil and is not prone to evaporation, and the prevention and treatment effect on soil pollution can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pollution prevention and control, and particularly to a device and method for soil pollution prevention and control. Background Art

[0002] Soil refers to the loose surface layer on the land surface that has fertility and can grow plants, and its thickness is generally about 2m. Soil not only provides mechanical support for plant growth, but also provides the necessary fertility elements such as water, fertilizer, air, and heat for plant growth and development. Due to the rapid growth of the population and the rapid development of industry, solid waste is continuously piled and dumped on the soil surface, harmful wastewater continuously penetrates into the soil, and harmful gases and floating dust in the atmosphere also continuously fall on the soil with rainwater, resulting in soil pollution. Any substance that hinders the normal function of the soil, reduces the yield and quality of crops, and indirectly affects human health through food, vegetables, fruits, etc. is called a soil pollutant.

[0003] Soil pollutants can be roughly divided into two categories: inorganic pollutants and organic pollutants. Inorganic pollutants mainly include acids, alkalis, heavy metals, salts, radioactive elements such as cesium and strontium compounds, and compounds containing arsenic, selenium, and fluorine. Organic pollutants mainly include organic pesticides, phenols, cyanides, petroleum, synthetic detergents, 3,4-benzopyrene, and harmful microorganisms brought by urban sewage, sludge, and manure. When the soil contains too many harmful substances and exceeds the self-purification ability of the soil, it will cause changes in the composition, structure, and function of the soil, the activities of microorganisms will be inhibited, and harmful substances or their decomposition products will gradually accumulate in the soil and be indirectly absorbed by the human body through "soil → plant → human" or "soil → water → human", reaching the level of harming human health, which is soil pollution.

[0004] The prevention and control methods of soil pollution include chemical remediation technology, physical remediation technology, and biological remediation technology. Physical remediation technology mainly includes soil replacement method, thermal desorption, and soil vapor extraction, etc., which require the displacement treatment of soil and have great treatment difficulty. Biological remediation technology uses the characteristics of organisms such as microorganisms, plants, and animals to decompose toxic substances, including microbial remediation, phytoremediation, and animal remediation, etc., which have less impact on the environment, but the remediation period is relatively long. Chemical remediation is to reduce the concentration of pollutants in the soil through chemical, physical, and biological technologies and convert them into low-toxic or non-toxic substances, thereby blocking the transfer of pollutants in the ecosystem. It has a fast repair effect and good results and is a commonly used method for soil pollution prevention and control.

[0005] However, the existing chemical remediation technology mainly sprays soil remediation liquid on the soil in the land. The soil remediation liquid can only be sprayed on the soil surface and is easily evaporated gradually, and it is difficult for the soil remediation liquid to penetrate into the deep soil, resulting in poor soil pollution prevention and control effects. Summary of the Invention

[0006] An embodiment of the present invention provides a device for soil pollution prevention and control, which can solve the problem in the prior art that in chemical remediation technology, a soil remediation liquid is mainly sprayed onto the soil in the land. The soil remediation liquid can only be sprayed onto the soil surface and is easily evaporated gradually. It is difficult for the soil remediation liquid to penetrate into the deep soil, resulting in poor soil pollution prevention and control effects.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions: A device and method for soil pollution prevention and control, wherein the device for soil pollution prevention and control includes a base, a container for storing the remediation liquid arranged on the base, and an infusion pump connected to the container. A box body is arranged on the base. A hollow worm is rotatably connected to the top wall of the box body. The hollow worm is drivingly connected to a worm wheel rotatably connected to the box body. A connecting rod is eccentrically rotatably connected to the worm wheel. The lower end of the connecting rod is hinged to a lifting plate slidably connected to the box body vertically. A hollow drill bit is arranged on the lifting plate. Liquid outlet holes are arranged at the lower end of the hollow drill bit. The upper end of the hollow worm is rotatably connected to a liquid guide pipe connected to the infusion pump. Splines are arranged on the lower part of the hollow worm. Spline grooves adapted to the splines are arranged on the inner wall of the hollow drill bit. A protective cover is arranged at the upper end of the box body. A first driving part is arranged inside the protective cover. The output end of the first driving part is provided with a driving bevel gear. A driven bevel gear meshing with the driving bevel gear is arranged on the hollow worm.

[0008] Preferably, a cam is coaxially arranged on the hollow worm. A valve housing is arranged inside the protective cover. A limiting ring is arranged inside the valve housing. A valve core is slidably connected to the right side of the limiting ring. A tension spring is arranged between the limiting ring and the valve core. A force guiding rod passing through the valve housing is arranged on the left side of the valve core. The force guiding rod is in close contact with the cam under the pulling force of the tension spring. The liquid guide pipe includes a first conduit and a second conduit respectively connected to the valve housing. The first conduit is arranged on the right side of the limiting ring. The second conduit is arranged on the left side of the limiting ring.

[0009] Preferably, the outer diameter of the force guiding rod is smaller than the inner diameter of the limiting ring.

[0010] Preferably, a roller is rotatably connected to the left end of the force guiding rod.

[0011] Preferably, a rectangular groove is arranged on the worm wheel along its radial direction. A ball screw is rotatably connected inside the rectangular groove. A screw nut slidably connected to the rectangular groove is drivingly connected to the ball screw. A second driving part with an output end fixedly connected to the ball screw is arranged on the outer side wall of the rectangular groove. A fixing pin is arranged on the screw nut. The upper end of the connecting rod is rotatably connected to the fixing pin.

[0012] Preferably, an avoidance hole is formed in the base.

[0013] Preferably, a guide rod is vertically arranged inside the box body, and a guide hole adapted to the guide rod is formed on the lifting plate.

[0014] The soil pollution prevention and control method of the present invention adopts the following steps:

[0015] S1: According to the pollution depth of the polluted soil, the drilling stroke of the hollow drill bit is adjusted by controlling the forward and reverse rotation of the second driving part;

[0016] S2: Move the device to the position to be repaired, drive the hollow drill bit to make a lifting and rotating motion through the first driving part. During the process of the hollow drill bit drilling into the soil, the liquid delivery pump conveys the repair liquid in the container to the hollow drill bit and sprays it out from the liquid outlet hole.

[0017] Compared with the prior art, through the cooperative setting of the base, the container, the liquid delivery pump, the box body, the hollow worm, the worm wheel, the connecting rod, the lifting plate, the hollow drill bit, the liquid outlet hole, the liquid guide pipe, the spline, the spline groove, the protective cover, the first driving part, the driving bevel gear and the driven bevel gear, the first driving part drives the driving bevel gear to rotate, the driving bevel gear drives the hollow worm to rotate through the driven bevel gear, the spline on the hollow worm drives the hollow drill bit to rotate through the spline groove, the hollow worm simultaneously drives the worm wheel to rotate, and the worm wheel drives the lifting plate and the hollow drill bit to make a reciprocating lifting motion through the connecting rod, so that the hollow drill bit makes a combined motion of rotation and lifting, automatically drills the ground. During the drilling process, the liquid delivery pump extracts the repair liquid in the container, and successively enters the hollow drill bit through the liquid guide pipe and the hollow worm, and sprays out from the liquid outlet hole, so that the repair liquid enters the soil interior and is not easy to evaporate, which is beneficial to improving the prevention and control effect of soil pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the main view sectional structure schematic diagram of the present invention;

[0019] Figure 2 It is the main view sectional structure schematic diagram of the hollow drill bit of the present invention;

[0020] Figure 3 It is the top view structure schematic diagram of the hollow drill bit of the present invention;

[0021] Figure 4 It is the cross-sectional structure schematic diagram of the hollow worm of the present invention;

[0022] Figure 5 It is the main view sectional structure schematic diagram of the valve housing of the present invention;

[0023] Figure 6 For the present invention Figure 1 The enlarged schematic diagram of the structure at A in

[0024] Figure 7Schematic top cross-sectional structure diagram of the infusion pump of the present invention;

[0025] Figure 8 Schematic front view structure diagram of the present invention.

[0026] In the figure: 1, base; 2, infusion pump; 201, pump housing; 202, hose; 203, rotor; 3, container; 4, box body; 5, protective cover; 6, first driving part; 7, hollow worm; 8, lifting plate; 9, hollow drill bit; 10, spline groove; 11, liquid outlet hole; 12, liquid guiding pipe; 1201, first conduit; 1202, second conduit; 13, driving bevel gear; 14, driven bevel gear; 15, worm gear; 16, connecting rod; 17, avoidance hole; 18, cam; 19, valve housing; 20, limiting ring; 21, valve core; 22, force guiding rod; 23, tension spring; 24, roller; 25, rectangular groove; 26, ball screw; 27, screw nut; 28, second driving part; 29, fixing pin; 30, guiding rod; 31, spline. Specific embodiments

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the technical solutions of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] As Figures 1 to 8 shown, a device and method for soil pollution prevention and control, wherein the device for soil pollution prevention and control includes a base 1, a container 3 for storing the repair liquid arranged on the base 1, and an infusion pump 2 connected to the container 3. A box body 4 is arranged on the base 1. A hollow worm 7 is rotatably connected to the top wall of the box body 4. The hollow worm 7 is drivingly connected to a worm gear 15 rotatably connected to the box body 4. A connecting rod 16 is eccentrically rotatably connected to the worm gear 15. The lower end of the connecting rod 16 is hinged to a lifting plate 8 slidably connected to the box body 4 vertically. A hollow drill bit 9 is arranged on the lifting plate 8. Liquid outlet holes 11 are arranged at the lower end of the hollow drill bit 9. The upper end of the hollow worm 7 is rotatably connected to a liquid guiding pipe 12 connected to the infusion pump 2. Splines 31 are arranged at the lower part of the hollow worm 7. Spline grooves 10 adapted to the splines 31 are arranged on the inner wall of the hollow drill bit 9. A protective cover 5 is arranged at the upper end of the box body 4. A first driving part 6 is arranged inside the protective cover 5. The output end of the first driving part 6 is provided with a driving bevel gear 13. A driven bevel gear 14 meshing with the driving bevel gear 13 is arranged on the hollow worm 7.

[0029] During specific use, the first driving part 6 is a motor. The first driving part 6 drives the driving bevel gear 13 to rotate. The driving bevel gear 13 drives the hollow worm 7 to rotate through the driven bevel gear 14. The spline 31 on the hollow worm 7 drives the hollow drill bit 9 to rotate through the spline groove 10. The hollow worm 7 simultaneously drives the worm gear 15 to rotate. The worm gear 15 drives the lifting plate 8 and the hollow drill bit 9 to perform reciprocating lifting movements through the connecting rod 16, so that the hollow drill bit 9 performs a combined movement of rotation and lifting, automatically drilling the ground. During the drilling process, the liquid infusion pump 2 extracts the repair liquid in the container 3, and successively passes through the liquid guide pipe 12 and the hollow worm 7 and then enters the hollow drill bit 9, and is sprayed out from the liquid outlet hole 11, so that the repair liquid enters the interior of the soil.

[0030] In order to achieve the purpose of improving the prevention and control effect on polluted soil, preferably, a cam 18 is coaxially arranged on the hollow worm 7. A valve housing 19 is arranged inside the protective cover 5. A limiting ring 20 is arranged inside the valve housing 19. A valve core 21 is slidably connected to the right side of the limiting ring 20. A tension spring 23 is arranged between the limiting ring 20 and the valve core 21. A guide force rod 22 passing through the valve housing 19 is arranged on the left side of the valve core 21. The guide force rod 22 is in close contact with the cam 18 under the pulling force of the tension spring 23. The liquid guide pipe 12 includes a first conduit 1201 and a second conduit 1202 respectively connected to the valve housing 19. The first conduit 1201 is arranged on the right side of the limiting ring 20, and the second conduit 1202 is arranged on the left side of the limiting ring 20. The outer diameter of the guide force rod 22 is smaller than the inner diameter of the limiting ring 20.

[0031] Specifically, during the working process, the hollow worm 7 continuously drives the cam 18 to rotate. The cam 18 squeezes the valve core 21 to the right through the guide force rod 22. Subsequently, the valve core 21 is reset to the left under the pulling force of the tension spring 23, so that the valve core 21 performs a left-right reciprocating linear motion, achieving the effect of intermittently interrupting the liquid guide pipe 12, avoiding waste caused by continuous spraying of the repair liquid. In addition, since the pore structure of the soil also affects the infiltration ability of the liquid, the soil pores can be divided into ineffective pores, capillary pores and air pores. Capillary pores are the main channels for liquid to infiltrate into the soil, with a pore diameter of 0.02 - 0.002 mm. Moisture is easy to store and is easy to be utilized by plants. During the interruption process, the hydraulic pressure of the repair liquid in the liquid guide pipe 12 increases, and the pressure is released instantaneously when it is connected, which can promote the repair liquid to more easily pass through these pores, thereby increasing the infiltration ability of the repair liquid into the soil.

[0032] Preferably, a roller 24 is rotatably connected to the left end of the guide force rod 22. Through the arrangement of the roller 24, the sliding friction between the guide force rod 22 and the cam 18 is changed into the rolling friction between the roller 24 and the cam 18, changing the friction mode, reducing the friction force, reducing the noise and wear, and prolonging the service life of the device.

[0033] To achieve the purpose of saving the repair fluid and improving work efficiency, preferably, a rectangular groove 25 is arranged on the worm wheel 15 along its radial direction. A ball screw 26 is rotatably connected inside the rectangular groove 25. A screw nut 27 slidably connected to the rectangular groove 25 is drivingly connected to the ball screw 26. A second driving part 28 with an output end fixedly connected to the ball screw 26 is arranged on the outer side wall of the rectangular groove 25. A fixing pin 29 is arranged on the screw nut 27, and the upper end of the connecting rod 16 is rotatably connected to the fixing pin 29.

[0034] Specifically, the second driving part 28 is preferably a motor, and the lifting stroke of the hollow drill bit 9 is adjusted according to the depth of the contaminated soil on the ground to be repaired. When the depth of the contaminated soil is relatively deep, the second driving part 28 rotates forward, driving the ball screw 26 to rotate. Under the guiding action of the rectangular groove 25, the screw nut 27 moves away from the axis of the worm wheel 15, increasing the lifting stroke of the hollow drill bit 9, which is beneficial to improving the depth of soil repair; when the depth of the contaminated soil is relatively shallow, the second driving part 28 rotates reversely, driving the ball screw 26 to rotate. Under the guiding action of the rectangular groove 25, the screw nut 27 moves closer to the axis of the worm wheel 15, reducing the lifting stroke of the hollow drill bit 9, which is beneficial to saving the repair fluid and improving work efficiency.

[0035] Preferably, the base 1 is provided with an avoidance hole 17, a guide rod 30 is vertically arranged inside the box body 4, and a guide hole adapted to the guide rod 30 is arranged on the lifting plate 8.

[0036] Preferably, the infusion pump 2 includes a pump housing 201, a hose 202 and a rotor 203. The pump housing 201 is arranged on the protective cover 5. The hose 202 is arranged on the inner wall of the pump housing 201. The hollow worm 7 penetrates through the pump housing 201, and a rotor 203 located inside the pump housing 201 is arranged on the hollow worm 7. The two ends of the hose 202 are respectively connected to the container 3 and the first conduit 1201. The infusion pump 2 is driven by the first driving part 6, without an additional power source, which is beneficial to saving energy and protecting the environment.

[0037] The soil pollution prevention and control method of the present invention adopts the following steps:

[0038] S1: According to the pollution depth of the contaminated soil, the drilling stroke of the hollow drill bit 9 is adjusted by controlling the forward and reverse rotation of the second driving part 28;

[0039] S2: Move the device to the position to be repaired, drive the hollow drill bit 9 to make a lifting and rotating motion through the first driving part 6. During the process that the hollow drill bit 9 drills into the soil, the infusion pump 2 transports the repair fluid in the container 3 to the hollow drill bit 9 and then sprays it out from the liquid outlet hole 11.

[0040] Compared with the prior art, in the present invention, through the cooperation of the base 1, the container 3, the infusion pump 2, the box body 4, the hollow worm 7, the worm wheel 15, the connecting rod 16, the lifting plate 8, the hollow drill bit 9, the liquid outlet hole 11, the liquid guide pipe 12, the spline 31, the spline groove 10, the protective cover 5, the first driving part 6, the driving bevel gear 13 and the driven bevel gear 14, the first driving part 6 drives the driving bevel gear 13 to rotate, the driving bevel gear 13 drives the hollow worm 7 to rotate through the driven bevel gear 14, the spline 31 on the hollow worm 7 drives the hollow drill bit 9 to rotate through the spline groove 10, the hollow worm 7 drives the worm wheel 15 to rotate at the same time, the worm wheel 15 drives the lifting plate 8 and the hollow drill bit 9 to make a reciprocating lifting motion through the connecting rod 16, so that the hollow drill bit 9 makes a combined motion of rotation and lifting, automatically drills the ground. During the drilling process, the infusion pump 2 extracts the repair liquid in the container 3, and successively enters the hollow drill bit 9 through the liquid guide pipe 12 and the hollow worm 7, and is sprayed out from the liquid outlet hole 11, so that the repair liquid enters the soil interior and is not easy to evaporate, which is beneficial to improving the prevention and control effect of soil pollution.

[0041] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for preventing and controlling soil pollution, comprising a base (1), a container (3) arranged on the base (1) for storing a repair liquid, and an infusion pump (2) connected to the container (3), characterized in that: A box body (4) is arranged on the base (1). A hollow worm (7) is rotatably connected to the top wall of the box body (4). The hollow worm (7) is in transmission connection with a worm wheel (15) rotatably connected to the box body (4). An eccentric rotating connection rod (16) is arranged on the worm wheel (15). The lower end of the connecting rod (16) is hinged to a lifting plate (8) vertically slidably connected to the box body (4). A hollow drill bit (9) is arranged on the lifting plate (8). Liquid outlet holes (11) are arranged at the lower end of the hollow drill bit (9). The upper end of the hollow worm (7) is rotatably connected to a liquid guide pipe (12) connected to an infusion pump (2). Splines (31) are arranged at the lower part of the hollow worm (7). Spline grooves (10) adapted to the splines (31) are arranged on the inner wall of the hollow drill bit (9). A protective cover (5) is arranged at the upper end of the box body (4). A first driving part (6) is arranged inside the protective cover (5). A driving bevel gear (13) is arranged at the output end of the first driving part (6). A driven bevel gear (14) meshing with the driving bevel gear (13) is arranged on the hollow worm (7).

2. The soil pollution prevention and control device according to claim 1, wherein: A cam (18) is coaxially arranged on the hollow worm (7). A valve housing (19) is arranged inside the protective cover (5). A limiting ring (20) is arranged inside the valve housing (19). A valve core (21) is slidably connected to the right side of the limiting ring (20). A tension spring (23) is arranged between the limiting ring (20) and the valve core (21). A force guiding rod (22) passing through the valve housing (19) is arranged on the left side of the valve core (21). The force guiding rod (22) is in close contact with the cam (18) under the pulling force of the tension spring (23). The liquid guide pipe (12) includes a first conduit (1201) and a second conduit (1202) respectively connected to the valve housing (19). The first conduit (1201) is arranged on the right side of the limiting ring (20). The second conduit (1202) is arranged on the left side of the limiting ring (20).

3. The soil pollution prevention and control device according to claim 2, wherein: The outer diameter of the force guiding rod (22) is smaller than the inner diameter of the limiting ring (20).

4. The soil pollution prevention and control device according to claim 2, wherein: A roller (24) is rotatably connected to the left end of the force guiding rod (22).

5. The soil pollution prevention and control device according to any one of claims 1-4, characterized in that: A rectangular groove (25) is arranged on the worm wheel (15) along its radial direction. A ball screw (26) is rotatably connected to the inside of the rectangular groove (25). A screw nut (27) slidably connected to the rectangular groove (25) is in transmission connection with the ball screw (26). A second driving part (28) with an output end fixedly connected to the ball screw (26) is arranged on the outer side wall of the rectangular groove (25). A fixing pin (29) is arranged on the screw nut (27). The upper end of the connecting rod (16) is rotatably connected to the fixing pin (29).

6. The soil pollution prevention and control device according to claim 5, wherein: The base (1) is provided with an avoidance hole (17).

7. The soil pollution prevention and control device according to claim 6, characterized in that: A guiding rod (30) is vertically arranged inside the box body (4). A guiding hole adapted to the guiding rod (30) is arranged on the lifting plate (8).

8. A prevention and control method for soil pollution prevention and control, including implementing with the device for soil pollution prevention and control described in claim 7, characterized in that, Comprising the following steps: S1: According to the pollution depth of the polluted soil, adjust the drilling stroke of the hollow drill bit (9) by controlling the forward and reverse rotation of the second driving part (28); S2: Move the device to the position to be repaired, drive the hollow drill bit (9) to make a lifting and rotating motion through the first driving part (6). During the process that the hollow drill bit (9) drills into the soil, the liquid infusion pump (2) transports the repair liquid in the container (3) to the hollow drill bit (9) and then sprays it out from the liquid outlet hole (11).

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