Chemical remediation system for polluted soil

Abstract

The invention provides a chemical remediation system for contaminated soil, and belongs to the technical field of soil remediation, the chemical remediation system comprises a storage circular groove, the interior of the storage circular groove is a soil remediation area, a frame body is arranged in the middle of the interior of the storage circular groove, and a medicament cylinder is arranged in the frame body; a lower rotating frame and an upper rotating frame are coaxially and rotationally connected to the frame body, a spraying pipe arranged in the radial direction of the storage circular groove is arranged on the outer side of the lower rotating frame, and a spraying assembly used for pumping chemicals in the chemical barrels into the spraying pipe is arranged on the lower rotating frame; a soil storage cylinder is arranged above the upper rotating frame, a spreading pipe arranged in the radial direction of the storage circular groove is arranged on the outer side of the upper rotating frame, and a conveying assembly used for conveying soil in the soil storage cylinder into the spreading pipe is arranged on the upper rotating frame; and a driving mechanism for driving the upper rotating frame or the lower rotating frame to rotate independently is arranged on the frame body. According to the device, a layer of chemical agent can be sprayed after a layer of soil is laid, the mixing uniformity between polluted soil and the chemical agent can be greatly improved while a large amount of soil is laid and scattered, a turning screen and a stirring device are not needed, and finally the soil remediation efficiency and the remediation effect are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of soil remediation, and more specifically, relates to a contaminated soil chemical remediation system. Background Art

[0002] With the continuous acceleration of the industrialization process, the irrational exploitation of mineral resources and their smelting emissions, long-term sewage irrigation and sludge application to the soil, atmospheric deposition caused by human activities, and the application of fertilizers and pesticides have caused serious soil pollution.

[0003] Soil remediation refers to technical measures to restore the normal function of contaminated soil. Common soil remediation technologies include physical, chemical and biological methods. Chemical remediation is to add amendments to the soil to reduce the biological effectiveness of heavy metals through adsorption, oxidation-reduction, antagonism or precipitation of heavy metals.

[0004] The Chinese patent with the publication number CN102974608A is available for reference. It discloses a method for chemically enhanced remediation of organic contaminated soil, including four stages: (1) centralized storage and transportation of contaminated soil; (2) chemical enhanced treatment; (3) contaminated exhaust gas treatment; and (4) soil acceptance and transportation. In the chemical enhanced treatment, soil screening equipment is used to mix the contaminated soil with the chemical improvement agent.

[0005] Most of the above patents and other existing technologies use soil sieving equipment or stirring equipment to mix the contaminated soil and the chemical improvement agent. If the soil sieving equipment is used, it is easy to cause uneven mixing between the contaminated soil and the chemical improvement agent, resulting in poor soil remediation effect; if the stirring equipment is used, only a small amount of soil can be repaired at a time, resulting in low soil remediation efficiency. Summary of the invention

[0006] The purpose of the present invention is to provide a contaminated soil chemical remediation system to solve the technical problems existing in the prior art that if soil renovation equipment is used, it is easy to cause uneven mixing between contaminated soil and chemical improvement agents, resulting in poor soil remediation effect; if stirring equipment is used, only a small amount of soil can be remediated at a time, resulting in low soil remediation efficiency.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a contaminated soil chemical remediation system, including a storage circular groove, the interior of the storage circular groove is a soil remediation area, a frame is arranged in the middle position of the storage circular groove, and a medicine barrel is arranged in the frame; a lower rotating frame and an upper rotating frame are coaxially connected to the frame, a spraying pipe arranged along the radial direction of the storage circular groove is arranged on the outer side of the lower rotating frame, and a spraying component for drawing the medicine in the medicine barrel into the spraying pipe is arranged on the lower rotating frame; a soil storage barrel is arranged above the upper rotating frame, a spreading pipe arranged along the radial direction of the storage circular groove is arranged on the outer side of the upper rotating frame, and a conveying component for conveying soil in the soil storage barrel to the spreading pipe is arranged on the upper rotating frame; a driving mechanism for driving the upper rotating frame or the lower rotating frame to rotate separately is arranged on the frame.

[0008] In combination with the above technical solution, in a possible implementation, the spray assembly includes a pump body, a pumping pipe and a counterweight block, the pump body is arranged on the lower rotating frame and connected to the spraying pipe, one end of the pumping pipe is connected to the pump body, and the other end of the pumping pipe is arranged in the medicine barrel, the counterweight block is connected to the bottom end of the pumping pipe, and the pumping pipe is a hose.

[0009] In combination with the above technical solution, in a possible implementation, the conveying assembly includes a conveying shaft, a spiral blade and a conveying motor, the conveying shaft is coaxially rotatably connected in the spreading pipe, and one end of the conveying shaft extends into the soil storage barrel; a row of discharge holes is provided at the bottom of the spreading pipe, the spiral blade is fixed on the conveying shaft, the spiral blade is located in the soil storage barrel and the spreading pipe at the same time, the conveying motor is arranged on the upper rotating frame, and the output shaft of the conveying motor is coaxially fixed with the conveying shaft.

[0010] In combination with the above technical solution, in a possible implementation, the soil storage cylinder includes a fixed cylinder and a rotating cylinder, the rotating cylinder is rotatably connected to the bottom of the fixed cylinder, and the conveying shaft and the spiral blade are located in the rotating cylinder; a connecting frame is provided at the top of the fixed cylinder, and the top of the connecting frame is connected to the roof steel structure or an external fixed structure.

[0011] In combination with the above technical solution, in a possible implementation, the driving mechanism includes a driving motor, a driving shaft, an internal gear plate, gears and a connection switching assembly, the driving motor is vertically arranged in the frame body, the driving shaft is rotatably connected in the frame body and is coaxially fixed with the output shaft of the driving motor; there are two internal gear plates and they are coaxially fixed on the upper rotating frame or the lower rotating frame respectively; there are two gears and they are coaxially rotatably connected to the driving shaft, and the two gears are meshed with the internal gear plates one by one; the connection switching assembly is used to fix the two gears relatively to the driving shaft separately.

[0012] In combination with the above technical solution, in a possible implementation method, the connection switching component includes a switching rod and a connecting block, a lifting groove is coaxially opened on the top of the driving shaft, the switching rod is slidably arranged in the lifting groove, and the connecting blocks are divided into two groups and are fixed on the switching rod in an upper and lower manner; a connecting groove for the connecting block to be lifted and lowered is arranged in the driving shaft, and a vertical groove and an annular groove are opened on the inner circumference of each gear, and the vertical grooves and annular grooves are arranged in an upper and lower manner, and the vertical grooves and annular grooves on the two gears are distributed in opposite directions in the upper and lower directions; each group of the connecting blocks slides between the corresponding vertical grooves and the annular grooves, and when one group of the connecting blocks is located in the corresponding vertical grooves, the other group of the connecting blocks is located in the annular grooves; a lifting component is arranged in the frame body, and the lifting component is used to drive the two groups of the connecting blocks to slide and switch between the corresponding vertical grooves and the annular grooves.

[0013] In combination with the above technical solution, in a possible implementation method, the lifting assembly includes a stud, a sleeve, a guide member and a driving member. The stud is coaxially rotatably connected to the top of the switching rod, the sleeve is threadedly connected to the stud, the guide member is arranged in the frame body and vertically guides and limits the stud, the sleeve is rotatably connected to the guide member, and the driving member is arranged in the frame body and is used to drive the sleeve to rotate.

[0014] In combination with the above technical solution, in a possible implementation, the guide member includes a guide plate and a guide block, the guide plate is fixed in the frame body, the stud passes through the guide plate, a guide groove is provided on the outer peripheral surface of the stud along its axial direction, the guide block is fixed in the guide plate and is located in the guide groove, and the screw sleeve is rotatably connected to the guide plate.

[0015] In combination with the above technical solution, in a possible implementation method, the driving member includes a transmission motor, a sprocket and a chain. The transmission motor is vertically arranged in the frame. There are two sprockets and they are coaxially fixed on the output shaft of the transmission motor and the screw sleeve respectively. The chain sleeve is engaged with the two sprockets.

[0016] In combination with the above technical solution, in a possible implementation, two supporting annular grooves are provided on the inner circumference of the storage circular groove, and the outer ends of the spraying pipe and the spreading pipe are correspondingly slidably arranged in the supporting annular grooves.

[0017] The beneficial effects of a contaminated soil chemical remediation system provided by the present invention are as follows: compared with the prior art, the present invention pours chemical agents into the agent cylinder and pours crushed contaminated soil into the soil storage cylinder, first pumps the soil into the spreading pipe through the conveying component, and at the same time drives the upper rotating frame to rotate through the driving mechanism to achieve the spreading of the first layer of soil in the storage circular groove; then pumps the chemical agents into the spraying pipe through the spraying component, and at the same time drives the lower rotating frame to rotate through the driving mechanism to achieve the spraying of the chemical agents on the first layer of soil; then repeats the above steps to reverse the upper rotating frame and the lower rotating frame, and through the reciprocating rotation of the spreading pipe and the spraying pipe in sequence, it can be achieved that a layer of chemical agents is sprayed for each layer of soil, a large amount of soil can be spread in each storage circular groove, and the mixing uniformity between the contaminated soil and the chemical agents is greatly improved, and there is no need for a sieve and a stirring device, which ultimately improves the efficiency and remediation effect of soil remediation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A schematic diagram of the structure of a contaminated soil chemical remediation system provided by an embodiment of the present invention; Figure 2 A schematic diagram of the structure of an upper rotating frame and a lower rotating frame provided in an embodiment of the present invention; Figure 3 A partial cross-sectional view of a spray assembly, a conveying assembly and a driving mechanism provided in an embodiment of the present invention; Figure 4 A partial cross-sectional view of a driving mechanism provided by an embodiment of the present invention; Figure 5 A partial cross-sectional view of a connection switching assembly and a lifting assembly provided in an embodiment of the present invention; Figure 6 A partial cross-sectional view of a connection switching assembly, a vertical groove and an annular groove provided in an embodiment of the present invention; Figure 7 A partial cross-sectional view of a guide member provided in an embodiment of the present invention; Figure 8A schematic structural diagram of a contaminated soil chemical remediation system provided in accordance with another embodiment of the present invention.

[0020] Among them, the reference numerals in the figures are as follows: 1. Storage round groove; 11. Support ring groove; 12. Side opening; 2. Frame; 21. Drug barrel; 22. Lower rotating frame; 23. Upper rotating frame; 24. Soil storage barrel; 241. Fixed barrel; 242. Rotating barrel; 243. Connecting frame; 3. Spraying pipe; 4. Spraying assembly; 41. Pump body; 42. Pumping pipe; 43. Counterweight; 5. Spreading pipe; 51. Discharge hole; 6. Conveying assembly; 61. Conveying shaft; 62. Spiral blade; 63. Conveying motor; 7. Driving mechanism; 71. Driving : driving motor; 72, driving shaft; 721, lifting slot; 722, connecting slot; 73, inner gear disc; 74, gear; 741, vertical slot; 742, annular slot; 75, connecting switching assembly; 751, switching rod; 752, connecting block; 8, lifting assembly; 81, stud; 811, guide slot; 82, screw sleeve; 83, guide member; 831, guide plate; 832, guide block; 84, driving member; 841, transmission motor; 842, sprocket; 843, chain; 9, spiral auger. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0022] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0023] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0024] The directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. The directions or positional relationships indicated by the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0025] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0026] A contaminated soil chemical remediation system provided by the present invention is now described.

[0027] like Figures 1 to 3 As shown, one embodiment of the present invention provides a contaminated soil chemical remediation system, including a storage circular groove 1, the interior of the storage circular groove 1 is a soil remediation area, a frame 2 is arranged in the middle position of the storage circular groove 1, and a medicine barrel 21 is arranged in the frame 2; a lower rotating frame 22 and an upper rotating frame 23 are coaxially connected to the frame 2, a spraying pipe 3 arranged radially along the storage circular groove 1 is arranged on the outer side of the lower rotating frame 22, and a spraying component 4 for drawing the medicine in the medicine barrel 21 into the spraying pipe 3 is arranged on the lower rotating frame 22; a soil storage barrel 24 is arranged above the upper rotating frame 23, a spreading pipe 5 arranged radially along the storage circular groove 1 is arranged on the outer side of the upper rotating frame 23, and a conveying component 6 for conveying the soil in the soil storage barrel 24 to the spreading pipe 5 is arranged on the upper rotating frame 23; a driving mechanism 7 for driving the upper rotating frame 23 or the lower rotating frame 22 to rotate separately is arranged on the frame 2.

[0028] Compared with the prior art, the present embodiment provides a contaminated soil chemical remediation system. By pouring chemical agents into the agent barrel 21 and pouring crushed contaminated soil into the soil storage barrel 24, the soil is first pumped into the spreading pipe 5 by the conveying component 6, and the upper rotating frame 23 is driven to rotate by the driving mechanism 7 to achieve the spreading of the first layer of soil in the storage circular groove 1; the chemical agents are then pumped into the spraying pipe 3 by the spraying component 4, and the lower rotating frame 22 is driven to rotate by the driving mechanism 7 to achieve the spraying of the chemical agents on the first layer of soil; the above steps are repeated to reverse the upper rotating frame 23 and the lower rotating frame 22, and through the reciprocating rotation of the spreading pipe 5 and the spraying pipe 3 in sequence, a layer of chemical agents can be sprayed for each layer of soil, a large amount of soil can be spread in each storage circular groove 1, and the mixing uniformity between the contaminated soil and the chemical agents is greatly improved, and there is no need for a sieve and a stirring device, which ultimately improves the efficiency and effect of soil remediation.

[0029] like Figure 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows: The spray assembly 4 includes a pump body 41, a pumping pipe 42 and a counterweight 43. The pump body 41 is arranged on the lower rotating frame 22 and connected to the spray pipe 3. One end of the pumping pipe 42 is connected to the pump body 41, and the other end of the pumping pipe 42 is arranged in the medicine barrel 21. The counterweight 43 is connected to the bottom end of the pumping pipe 42, and the pumping pipe 42 is a hose.

[0030] When it is necessary to spray chemicals, start the pump body 41 to deliver the chemicals to the spray pipe 3 through the pumping pipe 42, and spray them out from the various nozzles on the spray pipe 3. When the pump body 41 rotates with the lower rotating frame 22, the pumping pipe 42 and the counterweight 43 rotate in the medicine barrel 21. The counterweight 43 can ensure that the end of the pumping pipe 42 is always located at the bottom of the medicine barrel 21, thereby improving the stability of the medicine pumping.

[0031] like Figures 2 to 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows: The conveying assembly 6 includes a conveying shaft 61, a spiral blade 62 and a conveying motor 63. The conveying shaft 61 is coaxially rotatably connected in the spreading pipe 5, and one end of the conveying shaft 61 extends into the soil storage barrel 24. A row of discharge holes 51 are provided at the bottom of the spreading pipe 5, and the spiral blade 62 is fixed on the conveying shaft 61. The spiral blade 62 is located in the soil storage barrel 24 and the spreading pipe 5 at the same time. The conveying motor 63 is arranged on the upper rotating frame 23, and the output shaft of the conveying motor 63 is coaxially fixed with the conveying shaft 61.

[0032] When it is necessary to spread the contaminated soil, the conveying motor 63 is started to rotate the conveying and spiral blades 62. The spiral blades 62 convey the soil in the soil storage cylinder 24 to the spreading pipe 5 and discharge it through the discharge hole 51 at the bottom of the spreading pipe 5, thereby improving the soil conveying efficiency.

[0033] Furthermore, since the soil is transported from the inside to the outside of the storage circular groove 1 in the spreading pipe 5, in order to improve the uniformity of soil spreading, the diameter of the discharge hole 51 can be gradually increased from the inside to the outside of the storage circular groove 1.

[0034] like Figure 1 and Figure 3 As shown, the present invention provides a specific implementation method based on the above implementation method as follows: The soil storage cylinder 24 includes a fixed cylinder 241 and a rotating cylinder 242. The rotating cylinder 242 is rotatably connected to the bottom of the fixed cylinder 241. The conveying shaft 61 and the spiral blade 62 are located in the rotating cylinder 242. A connecting frame 243 is provided on the top of the fixed cylinder 241, and the top of the connecting frame 243 is connected to the roof steel structure or an external fixed structure.

[0035] When the driving mechanism 7 drives the upper rotating frame 23 to rotate, the conveying component 6 and the rotating cylinder 242 rotate along with the upper rotating frame 23, and the angle of the fixed cylinder 241 remains unchanged, which can not only reduce the workload of the driving mechanism 7, but also achieve the soil dredging effect inside the soil storage cylinder 24. While the conveying component 6 is conveying the soil, a relative rotation occurs between the fixed cylinder 241 and the rotating cylinder 242. After the soil in the rotating cylinder 242 is conveyed to the spreading pipe 5, the soil in the fixed cylinder 241 can fall into the rotating cylinder 242 in time, which can avoid the soil in the soil storage cylinder 24 from being suspended as much as possible, thereby improving the soil conveying effect.

[0036] like Figure 3 to Figure 4 As shown, the present invention provides a specific implementation method based on the above implementation method as follows: The driving mechanism 7 includes a driving motor 71, a driving shaft 72, an internal gear disc 73, a gear 74 and a connection switching assembly 75. The driving motor 71 is vertically arranged in the frame 2, and the driving shaft 72 is rotatably connected in the frame 2 and coaxially fixed with the output shaft of the driving motor 71; there are two internal gear discs 73 and they are coaxially fixed on the upper rotating frame 23 or the lower rotating frame 22 respectively; there are two gears 74 and they are coaxially connected to the driving shaft 72, and the two gears 74 are meshed with the internal gear discs 73 one by one; the connection switching assembly 75 is used to fix the two gears 74 relatively to the driving shaft 72 separately.

[0037] When soil spreading or pesticide spraying is required, the connection switching component 75 rotates the upper rotating frame 23 or the lower rotating frame 22 as needed to relatively fix the corresponding gear 74 and the drive shaft 72, and the other gear 74 is still in a rotationally connected state with the drive shaft 72. The drive motor 71 is started to rotate the drive shaft 72, and the drive shaft 72 drives the upper rotating frame 23 or the lower rotating frame 22 to rotate through the corresponding gear 74 and the inner gear disc 73, thereby improving the independent rotation effect of the upper rotating frame 23 or the lower rotating frame 22.

[0038] like Figures 5 and 6 As shown, the present invention provides a specific implementation method based on the above implementation method as follows: The connection switching assembly 75 includes a switching rod 751 and a connecting block 752. A lifting groove 721 is coaxially provided on the top of the driving shaft 72. The switching rod 751 is slidably arranged in the lifting groove 721. There are two groups of connecting blocks 752 and they are fixed on the switching rod 751 in an upper and lower manner. A connecting groove 722 is provided in the driving shaft 72 for the connecting block 752 to be lifted and lowered therein. A vertical groove 741 and an annular groove 742 are provided in the inner circumference of each gear 74. The vertical grooves 741 and the annular grooves 742 on the two gears 74 are distributed in opposite directions in the upper and lower directions. Each group of connecting blocks 752 slides between the corresponding vertical grooves 741 and the annular grooves 742. When one group of connecting blocks 752 is located in the corresponding vertical grooves 741, the other group of connecting blocks 752 is located in the annular grooves 742. A lifting assembly 8 is provided in the frame 2. The lifting assembly 8 is used to drive the two groups of connecting blocks 752 to slide and switch between the corresponding vertical grooves 741 and the annular grooves 742.

[0039] The lifting assembly 8 includes a stud 81, a screw sleeve 82, a guide member 83 and a driving member 84. The stud 81 is coaxially rotatably connected to the top of the switching rod 751, the screw sleeve 82 is threadedly connected to the stud 81, the guide member 83 is arranged in the frame 2 and vertically guides and limits the stud 81, the screw sleeve 82 is rotatably connected to the guide member 83, and the driving member 84 is arranged in the frame 2 and is used to drive the screw sleeve 82 to rotate.

[0040] When the upper connecting block 752 is located in the vertical groove 741 in the upper gear 74, the lower connecting block 752 is located in the annular groove 742 in the lower gear 74. At this time, the driving shaft 72 drives the upper gear 74 to rotate when rotating, thereby realizing the rotation of the upper rotating frame 23.

[0041] When the upper rotating frame 23 and the lower rotating frame 22 are rotated and switched, the driving member 84 drives the screw sleeve 82 to rotate. Through the setting of the guide member 83, the rotation of the screw sleeve 82 causes the stud 81 to rise and fall, and the stud 81 drives the switching rod 751 to rise and fall, so that the connecting block 752 can be moved between the vertical groove 741 and the annular groove 742, thereby finally improving the rotation switching efficiency between the upper rotating frame 23 and the lower rotating frame 22.

[0042] like Figure 5 and Figure 7 As shown, the present invention provides a specific implementation method based on the above implementation method as follows: The guide member 83 includes a guide plate 831 and a guide block 832. The guide plate 831 is fixed in the frame 2. The stud 81 passes through the guide plate 831. The outer surface of the stud 81 is provided with a guide groove 811 along its axial direction. The guide block 832 is fixed in the guide plate 831 and is located in the guide groove 811. The screw sleeve 82 is rotatably connected to the guide plate 831.

[0043] When the driving member 84 drives the screw sleeve 82 to rotate, the stud 81 is lifted and lowered in the guide plate 831 . At this time, relative sliding occurs between the guide block 832 and the guide groove 811 , thereby improving the lifting stability of the stud 81 .

[0044] like Figure 5 As shown, the present invention provides a specific implementation method based on the above implementation method as follows: The driving member 84 includes a transmission motor 841, a sprocket 842 and a chain 843. The transmission motor 841 is vertically arranged in the frame 2. There are two sprockets 842 which are coaxially fixed on the output shaft of the transmission motor 841 and the screw sleeve 82 respectively. The chain 843 is sleeved and meshed on the two sprockets 842.

[0045] When switching between the upper rotating frame 23 and the lower rotating frame 22, starting the transmission motor 841 can drive the screw sleeve 82 to rotate through the sprocket 842 and the chain 843, thereby improving the rotation efficiency of the screw sleeve 82; and because the space between the top of the drive shaft 72 and the top of the frame 2 is limited, the drive source can be installed to the side of the drive shaft 72 through the transmission method of the sprocket 842 and the chain 843, so as to make way for the lifting space of the stud 81, thereby improving the overall disassembly convenience of the connection switching component 75 and the driving member 84.

[0046] like Figure 1 As shown, the present invention provides a specific implementation method based on the above implementation method as follows: Two supporting annular grooves 11 are provided on the inner circumference of the storage circular groove 1 , and the outer ends of the spraying pipe 3 and the spreading pipe 5 are correspondingly slidably arranged in the supporting annular grooves 11 .

[0047] Furthermore, sliding seats can be provided at the outer ends of the spray pipe 3 and the spreading pipe 5 so that there is ball or roller friction between the two and the inner walls of the corresponding support annular grooves 11, which not only supports the spray pipe 3 and the spreading pipe 5, but also reduces the friction force of the spray pipe 3 and the spreading pipe 5 in the support annular grooves 11, so as to further reduce the workload of the driving mechanism 7.

[0048] In some possible embodiments, side openings 12 can be opened on both sides of the storage circular groove 1, and a spiral auger 9 is arranged directly below the side openings 12. The feed port of the spiral auger 9 is connected to the side openings 12, which can facilitate the discharge of the repaired soil in the storage circular groove 1 and improve the discharge efficiency.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0050] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0051] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

Claims

1. A contaminated soil chemical remediation system, characterized in that: The invention comprises a storage circular groove (1), wherein the interior of the storage circular groove (1) is a soil remediation area, a frame (2) is arranged in the middle of the storage circular groove (1), and a medicine barrel (21) is arranged in the frame (2); a lower rotating frame (22) and an upper rotating frame (23) are coaxially connected to the frame (2), a spraying pipe (3) arranged radially along the storage circular groove (1) is arranged on the outer side of the lower rotating frame (22), and a spraying pipe (3) for drawing the medicine in the medicine barrel (21) into the lower rotating frame (22) is arranged on the lower rotating frame (22). A spraying assembly (4) is provided in the spraying pipe (3); a soil storage barrel (24) is provided above the upper rotating frame (23); a spreading pipe (5) is provided on the outer side of the upper rotating frame (23) and is arranged radially along the storage circular groove (1); a conveying assembly (6) is provided on the upper rotating frame (23) for conveying soil in the soil storage barrel (24) to the spreading pipe (5); and a driving mechanism (7) is provided on the frame body (2) for driving the upper rotating frame (23) or the lower rotating frame (22) to rotate independently.

2. A contaminated soil chemical remediation system as claimed in claim 1, characterized in that: The spray assembly (4) comprises a pump body (41), a pumping pipe (42) and a counterweight (43); the pump body (41) is arranged on the lower rotating frame (22) and connected to the spraying pipe (3); one end of the pumping pipe (42) is connected to the pump body (41); the other end of the pumping pipe (42) is arranged in the medicine barrel (21); the counterweight (43) is connected to the bottom end of the pumping pipe (42); and the pumping pipe (42) is a hose.

3. A contaminated soil chemical remediation system as claimed in claim 1, characterized in that: The conveying assembly (6) comprises a conveying shaft (61), a spiral blade (62) and a conveying motor (63); the conveying shaft (61) is coaxially rotatably connected in the spreading pipe (5); one end of the conveying shaft (61) extends into the soil storage barrel (24); a row of discharge holes (51) is provided at the bottom of the spreading pipe (5); the spiral blade (62) is fixed on the conveying shaft (61); the spiral blade (62) is located in both the soil storage barrel (24) and the spreading pipe (5); the conveying motor (63) is provided on the upper rotating frame (23); and the output shaft of the conveying motor (63) is coaxially fixed to the conveying shaft (61).

4. A contaminated soil chemical remediation system as claimed in claim 3, characterized in that: The soil storage cylinder (24) comprises a fixed cylinder (241) and a rotating cylinder (242); the rotating cylinder (242) is rotatably connected to the bottom of the fixed cylinder (241); the conveying shaft (61) and the spiral blade (62) are located inside the rotating cylinder (242); a connecting frame (243) is provided at the top of the fixed cylinder (241); the top of the connecting frame (243) is connected to a roof steel structure or an external fixed structure.

5. The chemical remediation system for contaminated soil according to claim 1, characterized in that: The driving mechanism (7) comprises a driving motor (71), a driving shaft (72), an inner toothed disc (73), a gear (74) and a connection switching assembly (75); the driving motor (71) is vertically arranged in the frame (2); the driving shaft (72) is rotationally connected in the frame (2) and is coaxially fixed with the output shaft of the driving motor (71); there are two inner toothed discs (73) and they are coaxially fixed on the upper rotating frame (23) or the lower rotating frame (22); there are two gears (74) and they are coaxially connected to the driving shaft (72); the two gears (74) are meshed with the inner toothed discs (73) in a one-to-one correspondence; the connection switching assembly (75) is used to fix the two gears (74) to the driving shaft (72) respectively and independently.

6. A contaminated soil chemical remediation system as claimed in claim 5, characterized in that: The connection switching assembly (75) comprises a switching rod (751) and a connecting block (752); a lifting groove (721) is coaxially provided on the top of the driving shaft (72); the switching rod (751) is slidably arranged in the lifting groove (721); two groups of connecting blocks (752) are fixed on the switching rod (751) in an up-and-down manner; a connecting groove (722) is provided in the driving shaft (72) for the connecting block (752) to be lifted and lowered therein; a vertical groove (741) and an annular groove (742) are provided on the inner circumference of each gear (74); the two gears (74) are connected to each other in a vertical manner; The vertical grooves (741) and the annular grooves (742) on the frame (74) are distributed in opposite directions up and down; each group of the connecting blocks (752) slides between the corresponding vertical grooves (741) and the annular grooves (742); when one group of the connecting blocks (752) is located in the corresponding vertical grooves (741), the other group of the connecting blocks (752) is located in the annular grooves (742); a lifting assembly (8) is arranged in the frame (2), and the lifting assembly (8) is used to drive the two groups of the connecting blocks (752) to slide and switch between the corresponding vertical grooves (741) and the annular grooves (742).

7. A contaminated soil chemical remediation system as claimed in claim 6, characterized in that: The lifting assembly (8) comprises a stud (81), a screw sleeve (82), a guide member (83) and a driving member (84); the stud (81) is coaxially rotatably connected to the top of the switching rod (751); the screw sleeve (82) is threadedly connected to the stud (81); the guide member (83) is arranged in the frame (2) and performs vertical guidance and positioning on the stud (81); the screw sleeve (82) is rotatably connected to the guide member (83); and the driving member (84) is arranged in the frame (2) and is used to drive the screw sleeve (82) to rotate.

8. A contaminated soil chemical remediation system as claimed in claim 7, characterized in that: The guide member (83) comprises a guide plate (831) and a guide block (832); the guide plate (831) is fixed in the frame body (2); the stud (81) passes through the guide plate (831); a guide groove (811) is provided on the outer peripheral surface of the stud (81) along its axial direction; the guide block (832) is fixed in the guide plate (831) and is located in the guide groove (811); and the screw sleeve (82) is rotatably connected to the guide plate (831).

9. A contaminated soil chemical remediation system as claimed in claim 7, characterized in that: The driving member (84) comprises a transmission motor (841), a sprocket (842) and a chain (843); the transmission motor (841) is vertically arranged in the frame (2); there are two sprockets (842) which are coaxially fixed on the output shaft of the transmission motor (841) and the screw sleeve (82) respectively; and the chain (843) is sleeved and meshed on the two sprockets (842).

10. The contaminated soil chemical remediation system according to claim 1, characterized in that: The inner circumferential surface of the storage circular groove (1) is provided with two supporting annular grooves (11), and the outer ends of the spraying pipe (3) and the spreading pipe (5) are correspondingly slidably arranged in the supporting annular grooves (11).

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