Device for simulating soil pollution and pollution remediation experiment process

Abstract

The invention relates to the technical field of simulation experiments, in particular to a device for simulating the experimental process of soil pollution and pollution remediation, which comprises a support plate; control buttons are oppositely arranged on the left and right sides of the front end of the top of the supporting plate. The experiment box structure is arranged, a PLC module in a PLC control cabinet is used for controlling a linear module to drive a spraying mechanism to horizontally move towards the right end, a warning board protrudes out of a protection plate, the warning effect is achieved, an experimenter is warned to approach, violation operation is prevented, meanwhile, a sliding cover plate also relieves shielding of a top cover, then an air cylinder shrinks, and then the experiment box structure is formed. The position of the spraying assembly is changed, the overall spraying range is changed, the rotary knob is rotated anticlockwise, the spiral state of the rotary knob and the threaded base can be released, the adapting pipe can be pulled out of the connecting pipe from the lower end, and rapid disassembly is achieved; and water source waste caused by water source dripping is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of biomass energy industry, in particular to a device for simulating soil pollution and repairing the pollution experimental process. Background Art

[0002] During the construction of biomass energy projects, biomass raw material production and soil health are interdependent. At the same time, the construction process of biomass energy projects directly interferes with the soil state. The application of soil remediation technology relies heavily on the support of remediation equipment. At the same time, the particularity of domestic soil types, conditions and site pollution determines the need to develop more practical technologies and equipment with independent intellectual property rights and suitable for national conditions. This is not only a demand for soil environmental protection and technology industrialization, but also a demand for my country's emerging industry to enter the international environmental remediation market competition.

[0003] For example, document CN104991594A discloses a device for simulating soil contamination and conducting remediation experiments. This device not only simulates soil contamination processes and studies the diffusion patterns of pollutants, but also remediates contaminated soil. It is applicable to the study of a variety of pollutants and remediation agents. Unrestricted by soil type, it offers high flexibility and is suitable for widespread promotion and in-depth research. This device fills a gap in research on experimental equipment for simulating soil contamination and remediation.

[0004] However, rainfall is one of the main factors that cause the migration of some soil pollutants, such as soil surface runoff water and leached water. These pollutants will enter other environments and cause pollution again. At this time, simulated rainfall is often required. However, in the existing technology, although a rainfall device is added, during use, the top cover of the experimental box needs to be removed before rainfall can be carried out, and the range of rainfall cannot be adjusted. At the same time, the sprinkler head is not easy to disassemble and replace, and the water supply of the entire rainfall device needs to be cut off during disassembly, which affects the efficiency of the entire experiment. In addition, there is a lack of warning during rainfall, which can easily lead to experimental personnel approaching and illegal operations. Summary of the Invention

[0005] Technical problems solved In order to solve the above technical problems, the present invention provides a device for simulating soil pollution and repairing the pollution experimental process.

[0006] (2) Technical solution Based on this, the present invention provides the following technical solution: a device for simulating soil pollution and remediating the pollution experimental process, comprising a support plate; Control buttons are arranged on the left and right sides of the top front end of the support plate, the support plate is connected to the bottom bolt of the PLC control cabinet, and the left and right sides of the top of the support plate are arranged oppositely with the experimental box structure 2 and the experimental box structure 1. The support plate is fixed to the top of the support frame, the support frame is connected to the rear end of the linear module with bolts, and the bottom slide of the linear module is fixed to the spray mechanism; The experimental box structure 1 includes a box body, a temperature control component, an oxygen content detection sensor, a pressure gauge, a top cover, a guide rail, a protective plate, a sliding warning structure, a positioning structure, and a receiving seat. The bottom of the box body is fixed to the support plate, the bottom of the box body is provided with a temperature control component, the front end of the box body is installed with an oxygen content detection sensor, the box body is engaged with the rear end of the pressure gauge, the box body is connected to the bottom of the top cover, the sliding warning structure is fixed to the bottom of the receiving seat, and the right end of the positioning structure is fixedly connected to the receiving seat.

[0007] Preferably, the structure of the experimental box structure one is consistent with the structure of the experimental box structure two, and both the experimental box structure one and the experimental box structure two are connected to the PLC control cabinet by wires, and the temperature control components, oxygen content detection sensors, pressure gauges and other components on the experimental box structure one and the experimental box structure two are controlled by the PLC control cabinet.

[0008] Preferably, there are two groups of guide rails, and the guide rails are arranged relatively along the front and rear ends of the top of the top cover, and the guide rails at the front end protrude from the right side of the top cover. The guide rails can guide the top cover so that the top cover moves horizontally.

[0009] Preferably, the rear end of the protective plate is a cavity-shaped structure, and the left side of the rear end of the protective plate is fixed to the box body. The sliding warning structure is installed at the front end of the box body, and the protective plate blocks the sliding warning structure, which can protect the sliding warning structure.

[0010] Preferably, the sliding warning structure includes a guide frame, a sliding shaft, a movable frame, a sliding cover, a warning sign, a sliding rod, and a guide sleeve. The guide frame is fixed to the bottom of the warning sign, and sliding rods are relatively fixed on the left and right sides of the bottom of the warning sign. The sliding rods slide vertically with the inner side of the guide sleeve, the sliding shaft slides with the inner side of the guide frame, the rear end of the sliding shaft is fixed to the movable frame, the movable frame is movably connected to the front end of the sliding cover, the sliding cover slides with the inner side of the guide rail, the sliding cover is fixed to the bottom of the receiving seat, and the front end of the guide sleeve is fixedly connected to the protective plate.

[0011] Preferably, the positioning structure includes a connecting plate, a movable seat, a fixed block, a compression spring, and a top support block. The bottom of the connecting plate is fixed to the receiving seat, and movable seats are arranged on the left and right sides of the top of the connecting plate. The interior of the movable seat is hollow, and a fixed block is fixed to the right end of the interior of the movable seat. The fixed block is fixed to the right end of the compression spring, and the compression spring is fixedly connected to the right end of the top support block. The top support block slides with the inner side of the left end of the movable seat.

[0012] Preferably, the spray mechanism includes a fixed frame, a guide rod, a slider, a delivery pipe, a spray structure, a sliding plate, a cylinder, a slide groove, an adjusting rod, and a guide rail 1. The bottom slide of the linear module is fixed to the fixed frame, the front end of the fixed frame is fixed with a guide rod, the slider slides along the horizontal direction of the guide rod, the front end of the slider is fixed with a delivery pipe, the delivery pipe is connected to the top of the spray structure, the bottom of the guide rail 1 is bolted to the fixed frame, the sliding plate is slidably matched with the top of the guide rail 1, the top of the sliding plate is provided with a slide groove, the adjusting rod is slidably matched with the inner side of the slide groove, the bottom of the adjusting rod is fixed to the slider, the bottom of the cylinder is bolted to the sliding plate, and the rear end of the cylinder is rotatably matched with the fixed frame.

[0013] Preferably, there are four groups of slides, which are equidistantly distributed in the horizontal direction along the top of the sliding plate. The middle ends of the slides are inclined, and the inclination angles of the two middle groups of slides are smaller than the inclination angles of the slides on the left and right sides. The slider, the conveying pipe, the spray structure, and the adjusting rod constitute a spray assembly. Each group of the slides is equipped with a spray assembly. By adjusting the spacing between multiple groups of spray assemblies, the overall spray range can be changed. Positioning blocks are relatively provided on the left and right sides of the fixed frame. The positioning blocks and the positioning structure are arranged parallel to each other. The positioning blocks can be embedded in the middle of the two groups of movable seats, and the top support block is tightly fitted with the front and rear sides of the positioning blocks to achieve mutual insertion and positioning of the positioning blocks and the positioning structure.

[0014] Preferably, the spray structure includes a connecting pipe, a knob, a threaded seat, a receiving pipe, a spray head, an insert rod, a top bead 1, a spring 1, a top bead 2, and a spring 2. The top of the connecting pipe is connected to the delivery pipe, the connecting pipe is movably connected to the middle part of the knob, the inner side of the knob is threadedly engaged with the threaded seat, the threaded seat is fixed to the bottom of the receiving pipe, the receiving pipe is connected to the top of the spray head, the insert rod is slidably engaged with the top of the receiving pipe, the bottom of the spring 2 is fixed to the receiving pipe, the top of the spring 2 is fixed to the top bead 2, the top of the spring 1 is fixed to the connecting pipe, and the bottom of the spring 1 is fixedly connected to the top bead 1.

[0015] Preferably, a protrusion is provided in the middle of the insertion rod, and the insertion rod is embedded in the inner side of the bottom of the connecting tube. The protrusion serves to limit the insertion rod, so that the insertion rod can extend into the distance of one end of the inner side of the connecting tube, push up the top bead 1, thereby creating a gap between the top bead 1 and the middle of the connecting tube, forming a channel. At the same time, due to the limitation of the connecting tube, the insertion rod presses the top bead 2 downward to the lower end, thereby forming a channel between the connecting tube and the receiving tube, which are connected to each other.

[0016] (3) Beneficial effects Compared with the prior art, the present invention provides a device for simulating soil pollution and remediating the pollution experimental process, which has the following beneficial effects: The device is a device for simulating soil pollution and repairing pollution experimental processes. By setting up an experimental box structure, a linear module is controlled by a PLC module in a PLC control cabinet to drive the spray mechanism to move horizontally to the right end, so that a warning sign protrudes from the protective plate to serve as a warning, alerting experimenters to approach and preventing illegal operations. At the same time, the sliding cover also releases the cover on the top cover, and then the cylinder contracts, thereby changing the position of the spray component, thereby changing the overall spray range, and rotating the knob counterclockwise to release the spiral state of the knob with the threaded seat, and then the receiving pipe can be pulled out of the connecting pipe to the lower end to achieve rapid disassembly. When the receiving pipe is pulled out, the top bead blocks the discharge port at the lower end of the connecting pipe to prevent water from dripping and causing water waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of a three-dimensional structure of the experimental box structure of the present invention; Figure 3 This is a schematic diagram of the planar structure of the sliding warning structure of the present invention; Figure 4 This is a schematic diagram of the motion state of the sliding warning structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the positioning structure of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the spray mechanism of the present invention; Figure 7 This is a schematic diagram of the structure of the spray mechanism of the present invention when viewed from above; Figure 8 This is a schematic diagram of the three-dimensional structure of the spray structure of the present invention; Figure 9 This is a schematic diagram of the expanded structure of the spray structure of the present invention; Figure 10 It is a schematic diagram of the internal structure of the spray structure of the present invention.

[0018] In the figure: support plate-1, control button-2, PLC control cabinet-3, experimental box structure 1-4, experimental box structure 2-5, support frame-6, linear module-7, spray mechanism-8; Box body 41, temperature control assembly 42, oxygen content detection sensor 43, pressure gauge 44, top cover 45, guide rail 46, protective plate 47, sliding warning structure 48, positioning structure 49, receiving seat 410; Guide frame 481, slide shaft 482, movable frame 483, sliding cover 484, warning sign 485, slide bar 486, guide sleeve 487; Connecting plate 491, movable seat 492, fixing block 493, compression spring 494, supporting block 495; Fixed frame 81, guide rod 82, slider 83, conveying pipe 84, spray structure 85, sliding plate 86, cylinder 87, slide 88, adjustment rod 89, guide rail 1 810, positioning block 811; Connecting pipe 851, knob 852, threaded seat 853, receiving pipe 854, nozzle 855, insert rod 856, top bead 1 857, spring 1 858, top bead 2 859, spring 2 8510. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1 A device for simulating soil pollution and repairing pollution experimental processes includes a support plate 1; control buttons 2 are relatively arranged on the left and right sides of the top front end of the support plate 1, the support plate 1 is connected to the bottom bolts of the plc control cabinet 3, and the left and right sides of the top of the support plate 1 are relatively arranged with an experimental box structure 2 5 and an experimental box structure 1 4, the support plate 1 is fixed to the top of the support frame 6, the support frame 6 is connected to the rear end of the linear module 7 with bolts, the bottom slide of the linear module 7 is fixed to the spray mechanism 8, the structure of the experimental box structure 1 4 is consistent with the structure of the experimental box structure 2 5, and the experimental box structure 1 4 and the experimental box structure 2 5 are both connected to the plc control cabinet 3 with wires, and the temperature control component 42, oxygen content detection sensor 43, pressure gauge 44 and other components on the experimental box structure 1 4 and the experimental box structure 2 5 are controlled by the plc control cabinet 3.

[0021] In some embodiments, the PLC control cabinet 3 is an integrated control system with a programmable controller (PLC) as the core. It has the characteristics of compact structure, modular functions, and strong anti-interference ability. It is widely used in the field of industrial automation. The PLC control cabinet 3 has built-in overload, short circuit, and phase loss protection mechanisms to ensure operational safety. The core components include: circuit breaker: main power control to ensure power input stability; PLC controller: integrated or modular redundant design can be selected according to the project scale; power module: supports 24V DC or 220V AC input, and the voltage fluctuation adaptation range is -10%~+15%67; relays and terminal blocks: used for signal transfer and loop control, adapting to different voltage level requirements; expansion modules: such as instruments, safety barriers, surge protectors, etc., to enhance anti-interference ability.

[0022] See also Figure 2 , a device for simulating soil pollution and repairing pollution experimental processes, the experimental box structure 14 includes a box body 41, a temperature control component 42, an oxygen content detection sensor 43, a pressure gauge 44, a top cover 45, a guide rail 46, a protective plate 47, a sliding warning structure 48, a positioning structure 49, and a receiving seat 410. The bottom of the box body 41 is fixed to the support plate 1, the bottom of the box body 41 is provided with a temperature control component 42, the front end of the box body 41 is installed with an oxygen content detection sensor 43, the box body 41 and the rear end of the pressure gauge 44 are embedded, the box body 41 is connected to the bottom of the top cover 45, the sliding warning structure 48 is fixed to the bottom of the receiving seat 410, and the right end of the positioning structure 49 is fixedly connected to the receiving seat 410.

[0023] In some embodiments, there are two groups of guide rails 46, and the guide rails 46 are relatively arranged along the front and rear ends of the top of the top cover 45, and the guide rail 46 at the front end protrudes from the right side of the top cover 45. The top cover 45 can be guided by the guide rails 46 so that the top cover 45 can move horizontally. The rear end of the protective plate 47 is a cavity-shaped structure, and the left side of the rear end of the protective plate 47 is fixed to the box body 41. The sliding warning structure 48 is installed at the front end of the box body 41, and the protective plate 47 blocks the sliding warning structure 48, which can protect the sliding warning structure 48. The temperature control component 42 realizes temperature control through a heating element. The heating element can be a resistance wire heater or a PTC ceramic element. The oxygen content detection sensor 43 can be an electrochemical sensor. It adopts the electrochemical principle and reacts with the electrode through oxygen diffusion. It should generate an electrical signal to support real-time monitoring of oxygen concentration, have strong resistance to temperature and humidity interference, and be suitable for scenarios such as medical ventilators and industrial environment monitoring. The pressure gauge 44 is an ordinary pressure gauge based on the compressive deformation of elastic elements (Bourdon tubes, diaphragm boxes, bellows). The pointer is driven to rotate by the movement conversion mechanism to intuitively display the pressure value. Small holes are also provided at the left end of the box 41. These small holes are used for soil extraction and injection. The top cover 45 and the box 41 can be detachable and can be connected by several buckles to ensure the working stability between the top cover 45 and the box 41. A nitrogen interface and an air interface can be provided at the rear end of the box 41 for respectively feeding nitrogen and oxygen. A negative pressure generator can be provided at the bottom of the box 41 to extract gas and adjust the internal pressure. The right end of the box 41 is made of transparent glass.

[0024] See also Figure 3-Figure 5 , a device for simulating soil pollution and repairing pollution experimental process, the sliding warning structure 48 includes a guide frame 481, a sliding shaft 482, a movable frame 483, a sliding cover 484, a warning sign 485, a sliding rod 486, and a guide sleeve 487. The guide frame 481 is fixed to the bottom of the warning sign 485, and sliding rods 486 are relatively fixed on the left and right sides of the bottom of the warning sign 485. The sliding rod 486 slides vertically with the inner side of the guide sleeve 487, and the sliding shaft 482 slides with the inner side of the guide frame 481. The rear end of the sliding shaft 482 is fixed to the movable frame 483, and the movable frame 483 is movably connected to the front end of the sliding cover 484. The sliding cover 484 slides with the inner side of the guide rail 46, and the sliding cover 484 is fixed to the bottom of the receiving seat 410. The front end of the guide sleeve 487 is fixedly connected to the protective plate 47.

[0025] In some embodiments, the positioning structure 49 includes a connecting plate 491, a movable seat 492, a fixed block 493, a compression spring 494, and a support block 495. The bottom of the connecting plate 491 is fixed to the receiving seat 410, and movable seats 492 are arranged on the left and right sides of the top of the connecting plate 491. The interior of the movable seat 492 is cavity-shaped, and a fixed block 493 is fixed to the right end of the interior of the movable seat 492. The fixed block 493 is fixed to the right end of the compression spring 494, and the compression spring 494 is fixedly connected to the right end of the support block 495. The support block 495 slides with the inner side of the left end of the movable seat 492. The warning sign 485 can be a red reflector structure, which can effectively serve as a warning. The guide grooves on the guide frame 481 are distributed horizontally, inclined, and horizontally. When the sliding shaft 482 moves, the guide frame 481 will be pushed up and down through the guide grooves.

[0026] See also Figure 6-Figure 7 , a device for simulating soil pollution and repairing pollution experimental process, the spraying mechanism 8 includes a fixed frame 81, a guide rod 82, a slider 83, a delivery pipe 84, a spray structure 85, a sliding plate 86, a cylinder 87, a slide 88, an adjusting rod 89, and a guide rail 810. The bottom slide of the linear module 7 is fixed to the fixed frame 81, the front end of the fixed frame 81 is fixed with a guide rod 82, the slider 83 slides along the horizontal direction of the guide rod 82, the front end of the slider 83 is fixed with a delivery pipe 84, the delivery pipe 84 is connected to the top of the spraying structure 85, the bottom of the guide rail 810 is bolted to the fixed frame 81, the sliding plate 86 is slidably matched with the top of the guide rail 810, the top of the sliding plate 86 is provided with a slide groove 88, the adjusting rod 89 is slidably matched with the inner side of the slide groove 88, the bottom of the adjusting rod 89 is fixed to the slider 83, the bottom of the cylinder 87 is bolted to the sliding plate 86, and the rear end of the cylinder 87 is rotatably matched with the fixed frame 81.

[0027] In some embodiments, there are four groups of slide grooves 88, which are equidistantly distributed in the horizontal direction along the top of the sliding plate 86. The middle end of the slide groove 88 is inclined, and the inclination angles of the two groups of slide grooves 88 in the middle are smaller than the inclination angles of the slide grooves 88 on the left and right sides. The slider 83, the conveying pipe 84, the spray structure 85, and the adjustment rod 89 constitute a spray assembly. Each group of slide grooves 88 is equipped with a spray assembly. By adjusting the spacing between multiple groups of spray assemblies, the overall spray range can be changed. Positioning blocks 811 are relatively provided on the left and right sides of the fixed frame 81. The positioning blocks 811 and the positioning structure 49 are arranged parallel to each other. The positioning blocks 811 can be embedded in the two groups of movable seats The middle part of 492 is tightly fitted with the front and rear sides of the positioning block 811 through the top support block 495 to achieve mutual insertion and positioning of the positioning block 811 and the positioning structure 49. The cylinder 87 drives the piston to move back and forth linearly by compressed gas to complete the output of mechanical energy. Here, the cylinder 87 can also be replaced by an electric push rod, a hydraulic rod or other components that can perform linear reciprocating motion. It is not limited here. Replacing it with an electric push rod can make the sliding plate 86 move horizontally to any position to adjust the spacing of the spray components. The top of the delivery pipe 84 is connected to a water supply conduit, which delivers the required water source to the delivery pipe 84 through a water pump, so that the water source is sprayed through the nozzle 855 to simulate rainfall.

[0028] See also Figures 8-10 A device for simulating soil pollution and remediating pollution experimental processes, the spray structure 85 includes a connecting pipe 851, a knob 852, a threaded seat 853, a receiving pipe 854, a nozzle 855, an insert rod 856, a top bead 857, a spring 858, a top bead 859, and a spring 8510. The top of the connecting pipe 851 is connected to the delivery pipe 84, the connecting pipe 851 is movably connected to the middle of the knob 852, and the inner side of the knob 852 is connected to the threaded seat. 853 threaded fit, the threaded seat 853 is fixed to the bottom of the receiving tube 854, the receiving tube 854 is connected to the top of the nozzle 855, the insert rod 856 is slidably fitted with the top of the receiving tube 854, the bottom of the spring 2 8510 is fixed to the receiving tube 854, the top of the spring 2 8510 is fixed to the top bead 2 859, the top of the spring 1 858 is fixed to the connecting tube 851, and the bottom of the spring 1 858 is fixedly connected to the top bead 1 857.

[0029] In some embodiments, a protrusion is provided in the middle of the insertion rod 856, and the insertion rod 856 is embedded in the inner side of the bottom of the connecting tube 851. The protrusion serves to limit the insertion rod 856, so that the insertion rod 856 can extend into the inner end of the connecting tube 851, push up the top bead 1 857, thereby creating a gap between the top bead 1 857 and the middle of the connecting tube 851, forming a channel. At the same time, due to the limitation of the connecting tube 851, the insertion rod 856 presses the top bead 2 859 downward to form a channel between the connecting tube 851 and the receiving tube 854, which are connected to each other. The nozzle 855 can be a vertical downward spray nozzle, which generates a stable raindrop path through vertical pressure design and has strong wind resistance. The inner side of the knob 852 is provided with an internal thread, which is threaded with the threaded seat 853 through the internal thread.

[0030] In summary, when in use, soil with certain parameters such as soil compaction, temperature and humidity, electrical conductivity, saturated water flow rate, oxygen content, and pH is placed in the box 41 through the upper end of the box 41, and then pollutants are injected into the soil to study the diffusion law of pollutants in the soil and determine the remediation treatment method; During the experiment, according to different experimental schemes, specially prepared microbial agent remediation liquid is injected into the soil containing pollutants. The type of microbial agent remediation liquid is mainly determined by the characteristics of the pollutants, and the remediation effect of the microbial agent remediation liquid on the contaminated soil is studied; When rainfall simulation is required, the linear module 7 is controlled by the PLC module in the PLC control cabinet 3 to drive the spray mechanism 8 to move horizontally to the right end. When the fixed frame 81 moves, the positioning plug 811 is embedded in the inner side of the two movable seats 492. When the positioning plug 811 is embedded, the supporting block 495 squeezes the compression spring 494 to contract. When the positioning plug 811 continues to penetrate, the supporting block 495 recovers the elastic potential energy of the deformation through the compression spring 494 and is embedded in the groove of the positioning plug 811, thereby achieving a buckled connection with the positioning plug 811. As the fixed frame 81 continues to move, the sliding cover 484 is driven to move synchronously through the receiving seat 410. The sliding cover 484 is guided by the guide rail 46 to drive the movable frame 483 to move horizontally. When the movable frame 483 moves, the sliding shaft 482 slides with the guide frame 481. Since the guide slide groove of the guide frame 481 is provided with a slope, when the sliding shaft 482 moves to the rightmost end, it will push the guide frame 481 up. When the guide frame 481 is pushed up, the warning sign 485 is driven to protrude from the protective plate 47, which plays a warning role, warning the experimenter to approach and prevent illegal operation. At the same time, the sliding cover 484 also releases the shielding of the top cover 45, slides to the right end of the top cover 45, and supports the sliding cover 484 through the right end of the top cover 45. At this time, the fixing frame 81 moves to the top of the box body 41, and the cylinder 87 is controlled by the PLC module in the PLC control cabinet 3 to perform telescopic movement. When the cylinder 87 contracts, it drives the sliding plate 86 to move toward the rear end of the guide rail 810. The sliding plate 86 cooperates with the sliding adjustment rod 89 through the slide groove 88, so that the adjustment rod 89 slides in the slide groove 88, driving the slider 83 to move horizontally on the guide rod 82, thereby changing the position of the spray assembly and thus changing the overall spray range. Subsequently, the water source can be delivered to the delivery pipe 84 through the water pump, so that the water source is sprayed through the nozzle 855 to simulate rainfall and understand the leaching and migration rules of different pollutants in the soil. After the spraying is completed, the linear module 7 drives the spray mechanism 8 to return to its original position. At this time, the positioning plug 811 drives the receiving seat 410 to move to the left end, so that the sliding cover 484 covers the gap on the top cover 45 to achieve sealing. At the same time, when the sliding cover 484 moves to the leftmost end, it limits the positioning structure 49, and the positioning plug 811 is withdrawn from the positioning structure 49 and continues to move to the left end, which changes the traditional need to remove the top cover of the experimental box before the rainfall operation, thereby increasing the overall experimental efficiency. The soil temperature is controlled by a heating element installed in the temperature control assembly 42. The soil moisture can be adjusted by adjusting the water-soil ratio before loading into the simulation box. Nitrogen and oxygen are injected into the simulation box through the nitrogen and air interfaces, respectively, to adjust the oxygen content in the soil. To prevent excessive internal pressure in the equipment, which may lead to airtight failure, a pressure gauge 44 is used to monitor the gas pressure in the simulation device, and a negative pressure generator is provided to extract gas and adjust the internal pressure. Furthermore, by providing experimental box structure 1 4 and experimental box structure 2 5, single-variable experimental operations can be set up for comparative experiments on the soil pollution modification process. In order to determine whether the internal oxygen content meets the conditions, the installed oxygen content detection sensor 43 is used for monitoring; Collect the gas at the outlet of the negative pressure generator and conduct inspection and analysis on it to understand the changes in the internal reaction; The small holes on one side of the box are used to extract soil samples from the simulated box and inject pollutant / microbial agent remediation liquid; the reaction changes of the soil inside the box can be observed; When the spray structure 85 is to be disassembled, the knob 852 can be turned counterclockwise to release the spiral state of the knob 852 and the threaded seat 853, and then the receiving tube 854 can be pulled downward from the connecting tube 851 to achieve quick disassembly. Moreover, when the receiving tube 854 is pulled out, the insertion rod 856 will be released from the embedded state of the top bead 857, and the elastic potential energy of the deformation is restored by the spring 858, driving the top bead 857 to block the discharge port at the lower end of the connecting tube 851 to prevent water from dripping and causing water waste. Similarly, the spray structure 85 can be quickly installed.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for simulating soil pollution and remediating the pollution experimental process, characterized by: comprising a support plate (1); Control buttons (2) are arranged on the left and right sides of the front end of the top of the support plate (1), the support plate (1) is connected to the bottom of the PLC control cabinet (3) with bolts, and the left and right sides of the top of the support plate (1) are arranged to the left and right sides of the experimental box structure 2 (5) and the experimental box structure 1 (4), the support plate (1) is fixed to the top of the support frame (6), the support frame (6) is connected to the rear end of the linear module (7) with bolts, and the bottom slide of the linear module (7) is fixed to the spray mechanism (8); The experimental box structure 1 (4) includes a box body (41), a temperature control component (42), an oxygen content detection sensor (43), a pressure gauge (44), a top cover (45), a guide rail (46), a protective plate (47), a sliding warning structure (48), a positioning structure (49), and a receiving seat (410). The bottom of the box body (41) is fixed to the support plate (1), the bottom of the box body (41) is provided with a temperature control component (42), the front end of the box body (41) is installed with an oxygen content detection sensor (43), the box body (41) is engaged with the rear end of the pressure gauge (44), the box body (41) is connected to the bottom of the top cover (45), the sliding warning structure (48) is fixed to the bottom of the receiving seat (410), and the right end of the positioning structure (49) is fixedly connected to the receiving seat (410).

2. The device for simulating soil pollution and remediating pollution according to claim 1, characterized in that: The structure of the experimental box structure 1 (4) is consistent with the structure of the experimental box structure 2 (5), and both the experimental box structure 1 (4) and the experimental box structure 2 (5) are connected to the PLC control cabinet (3) using wires.

3. The device for simulating soil pollution and remediating pollution according to claim 1, characterized in that: There are two groups of guide rails (46) provided, and the guide rails (46) are arranged opposite to each other along the front and rear ends of the top of the top cover (45), and the guide rail (46) located at the front end protrudes from the right side of the top cover (45).

4. The device for simulating soil pollution and remediating pollution according to claim 1, characterized in that: The rear end of the protective plate (47) is a cavity-shaped structure, and the left side of the rear end of the protective plate (47) is fixed to the box body (41). The sliding warning structure (48) is installed at the front end of the box body (41), and the protective plate (47) shields the sliding warning structure (48).

5. The device for simulating soil pollution and remediating pollution according to claim 1, characterized in that: The sliding warning structure (48) includes a guide frame (481), a sliding shaft (482), a movable frame (483), a sliding cover (484), a warning sign (485), a sliding rod (486), and a guide sleeve (487). The guide frame (481) is fixed to the bottom of the warning sign (485). Sliding rods (486) are relatively fixed on the left and right sides of the bottom of the warning sign (485). The sliding rods (486) are vertically slidably engaged with the inner side of the guide sleeve (487). The sliding shaft (482) is slidably matched with the inner side of the guide frame (481), the rear end of the sliding shaft (482) is fixed to the movable frame (483), the movable frame (483) is movably connected to the front end of the sliding cover (484), the sliding cover (484) is slidably matched with the inner side of the guide rail (46), the sliding cover (484) is fixed to the bottom of the receiving seat (410), and the front end of the guide sleeve (487) is fixedly connected to the protective plate (47).

6. The device for simulating soil pollution and remediating pollution according to claim 1, characterized in that: The positioning structure (49) includes a connecting plate (491), a movable seat (492), a fixed block (493), a compression spring (494), and a supporting block (495). The bottom of the connecting plate (491) is fixed to the receiving seat (410). The movable seats (492) are arranged on the left and right sides of the top of the connecting plate (491). The interior of the movable seat (492) is hollow, and the fixed block (493) is fixed to the right end of the interior of the movable seat (492). The fixed block (493) is fixed to the right end of the compression spring (494). The compression spring (494) is fixedly connected to the right end of the supporting block (495). The supporting block (495) slides with the inner side of the left end of the movable seat (492).

7. The device for simulating soil pollution and remediating pollution according to claim 1, characterized in that: The spray mechanism (8) includes a fixed frame (81), a guide rod (82), a slider (83), a delivery pipe (84), a spray structure (85), a sliding plate (86), a cylinder (87), a slide (88), an adjustment rod (89), and a guide rail (810). The bottom slide of the linear module (7) is fixed to the fixed frame (81). The front end of the fixed frame (81) is fixed with a guide rod (82). The slider (83) slides in the horizontal direction of the guide rod (82). The front end of the slider (83) is fixed with a delivery pipe (84). The tube (84) is connected to the top of the spray structure (85), the bottom of the guide rail (810) is bolted to the fixed frame (81), the sliding plate (86) is slidably matched with the top of the guide rail (810), the top of the sliding plate (86) is provided with a sliding groove (88), the adjusting rod (89) is slidably matched with the inner side of the sliding groove (88), the bottom of the adjusting rod (89) is fixed to the slider (83), the bottom of the cylinder (87) is bolted to the sliding plate (86), and the rear end of the cylinder (87) is rotatably matched with the fixed frame (81).

8. The device for simulating soil pollution and remediating pollution according to claim 7, characterized in that: There are four groups of slides (88) equidistantly distributed along the horizontal direction of the top of the sliding plate (86). The middle end of the slide (88) is inclined, and the inclination angle of the two groups of slides (88) in the middle is smaller than the inclination angle of the slides (88) on the left and right sides. The slider (83), the conveying pipe (84), the spray structure (85), and the adjustment rod (89) constitute a spray assembly. Each group of the slides (88) is equipped with a spray assembly. Positioning plugs (811) are relatively provided on the left and right sides of the fixed frame (81).

9. The device for simulating soil pollution and remediating pollution according to claim 7, characterized in that: The spray structure (85) includes a connecting pipe (851), a knob (852), a threaded seat (853), a receiving pipe (854), a spray head (855), an insert rod (856), a top bead (857), a spring (858), a top bead (859), and a spring (8510). The top of the connecting pipe (851) is connected to the delivery pipe (84). The connecting pipe (851) is movably connected to the middle of the knob (852). The inner side of the knob (852) is threadedly matched with the threaded seat (853). The threaded seat (853) is screwed to the top of the connecting pipe (851). The groove seat (853) is fixed to the bottom of the receiving tube (854), the receiving tube (854) is connected to the top of the nozzle (855), the insertion rod (856) is slidably matched with the top of the receiving tube (854), the bottom of the spring 2 (8510) is fixed to the receiving tube (854), the top of the spring 2 (8510) is fixed to the top bead 2 (859), the top of the spring 1 (858) is fixed to the connecting tube (851), and the bottom of the spring 1 (858) is fixedly connected to the top bead 1 (857).

10. The device for simulating soil pollution and remediating pollution according to claim 9, characterized in that: A protrusion is provided in the middle of the insertion rod (856), and the insertion rod (856) is embedded in the inner side of the bottom of the connecting tube (851).

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