Spraying device based on biological excitation technology and fertilizer groove backfilling construction method

Abstract

The invention relates to the technical field of fertilizer groove backfilling, and provides a spraying device based on a biological excitation technology and a fertilizer groove backfilling construction method.The device comprises a liquid storage tank, a spraying device, a spraying device and a spraying device, the signal control module is supported below the liquid storage tank; the water pumping mechanism is supported below the liquid storage tank and is electrically connected with the signal control module, and the biological excitation liquid or the cementing liquid in the liquid storage tank is sprayed out of the surface of the backfilled soil of the fertilizer groove from the two sides and the front of the advancing route according to the control of the signal control module; the crawler belt structure is supported below the signal control module and the water pumping mechanism and is used for driving the whole device to move on the backfill soil of the fertilizer groove; a camera is arranged on the side, close to the water pumping mechanism, of the crawler belt structure and used for observing the backfill soil state after the biological excitation liquid or the cementing liquid is sprayed. The fertilizer trough is easy to operate and low in cost, and the defects that the working space of the fertilizer trough is narrow, and manual operation is difficult are well overcome.

Description

Technical Field

[0001] The present invention relates to the technical field of fertilizer trough backfilling, and in particular to a spraying device based on biostimulation technology and a fertilizer trough backfilling construction method. Background Art

[0002] A trough is the narrow backfill area between the exterior walls of a building's underground structure (such as basement walls) and the foundation pit support structure (such as retaining piles and underground diaphragm walls). It is typically 0.5–2 meters wide, and its depth varies depending on the depth of the excavation pit (it can exceed 10 meters). Currently, trough backfill is deep, narrow, and dangerous. This makes it difficult for traditional layered compaction equipment (such as rollers) to enter, resulting in low manual compaction efficiency and the need to strictly control layer thickness to less than 300 mm. This confined space forces workers to work along the sidewalls of deep foundation pits (e.g., 14.6 meters), exposing them to risks such as soil collapse and falling objects.

[0003] Microbial induced carbonate precipitation (MICP), a novel bioreinforcement technology, can effectively improve soil compressive strength and liquefaction resistance while significantly reducing permeability. It has been successfully applied in various engineering fields. Traditionally, MICP has been used to reinforce fertilizer trough soil to meet engineering requirements. However, this approach requires the injection of large amounts of foreign bacterial fluid, which can cause damage to the local ecological environment. Furthermore, these foreign bacteria are cultured in laboratories and have poor adaptability to complex external environments. When microbial reinforcement is used, environmental factors inhibit bacterial activity and reduce mineralization capacity, necessitating the introduction of large amounts of foreign bacterial fluid. However, due to differences in soil pore structure, bacterial fluid diffusion is anisotropic, resulting in uneven calcium carbonate deposition and, ultimately, significant local variations in mechanical properties and durability within the reinforced area. Summary of the Invention

[0004] The purpose of the present invention is to solve at least one technical problem in the background technology and to provide a spraying device based on biostimulation technology and a fertilizer trough backfill construction method.

[0005] To achieve the above objectives, the present invention provides a spraying device based on bioinspiration technology, comprising: A liquid storage tank, used for containing biostimulation liquid or cementing liquid; a signal control module, supported below the liquid storage tank; a water pump mechanism, supported below the liquid storage tank and electrically connected to the signal control module, for spraying the biostimulating liquid or cementing liquid in the liquid storage tank from both sides and the front of the travel route according to the control of the signal control module; A crawler structure, supported below the signal control module and the water pump mechanism, for driving the entire device to move on the backfill soil of the fertilizer tank; The side of the track structure close to the pump water mechanism is provided with a camera for observing the state of the backfill soil after spraying biological activator or cementing liquid.

[0006] According to one aspect of the present application, the top surface of the liquid storage tank is provided with a liquid injection port, the bottom of the liquid storage tank is provided with a first connecting plate, the first connecting plate extends from the periphery of the bottom of the liquid storage tank, and the extending part is provided with a connecting hole; The bottom surface of the first connecting plate is also provided with a mounting hole; The bottom surface of the liquid storage tank is provided with a liquid outlet, and the first connecting plate is provided with a corresponding through hole, and the pump water mechanism passes through the through hole and communicates with the liquid outlet.

[0007] According to one aspect of the present application, the signal control module comprises a second connecting plate, an integrated circuit board, a pressure sensor, a power supply and a plurality of connecting columns; The second connecting plate is connected with the first connecting plate through the plurality of connecting columns; The integrated circuit board is supported on the second connecting plate; The pressure sensor is supported on the integrated circuit board and electrically connected with the integrated circuit board, and the pressure acquisition end thereof is supported at the mounting hole.

[0008] According to one aspect of the present application, the pump water mechanism comprises two sections of water pipes, a water pump, a flow divider, a spray pipe and a fixing column; One end of one section of the water pipe communicates with the liquid outlet, and the other end is connected with the water pump; The water pump is electrically connected with the integrated circuit board; The water pump is connected with the flow divider through the other section of the water pipe; The spray pipe is arranged on both sides and the front of the flow divider; One end of the fixing column is supported on the side of the flow divider away from the water pump, and the other end is supported on the second connecting plate.

[0009] According to one aspect of the present application, the track structure comprises a track, an engine, a bottom plate and a driving wheel; Four engines are respectively supported on four corner portions of the bottom plate and are respectively electrically connected with the integrated circuit board; Four driving wheels are respectively connected with the output shafts of the four engines in one-to-one correspondence; Two tracks are respectively wound around two driving wheels located on one side; The bottom plate is connected with the second connecting plate through a plurality of connecting rods.

[0010] To achieve the above object, the present invention further provides a fertilizer tank backfill construction method using the above-mentioned spraying device based on biostimulation technology, comprising: S1: backfill fertilizer trough in layers; S2: prepare biostimulation solution; S3: using the spraying device to evenly spray the biostimulation liquid onto the surface of the current layer of backfill soil in the fertilizer tank; S4: prepare the cementing fluid; S5: using the spraying device to evenly spray the cementing liquid onto the surface of the current layer of backfill soil in the fertilizer tank; S6: Repeat steps S1-S5 until all layers of backfill soil in the fertilizer trough are completed.

[0011] According to one aspect of the present invention, the biostimulation solution is prepared as follows: Dissolve 20 g / L yeast extract, 0.01 g / L nickel oxide hexahydrate, 10 g / L urea, and 10 g / L ammonium chloride in water, and mix well to obtain a biostimulation solution; The volume of the biostimulation liquid is 0.3-1.2 times the volume of the backfill soil.

[0012] According to one aspect of the present invention, the spraying device is used to evenly spray the biostimulation liquid onto the surface of the current layer of backfill soil in the fertilizer tank, comprising: The biostimulant solution is placed into the reservoir; The crawler structure is activated by the signal control module, and the crawler structure drives the spraying device to move back and forth on the surface of the fertilizer tank backfill at a speed of 2m / min; The biostimulant liquid in the liquid storage tank is sprayed through a water pump mechanism onto the surface of the backfill soil in the fertilizer tank; After spraying the biostimulant solution, the backfill soil was allowed to stand for 12 hours.

[0013] According to one aspect of the present invention, the binder solution is prepared as follows: Dissolve 12g / L urea, 30g / L calcium chloride, and 0.5g / L yeast extract in water, mix well to obtain a cementing solution, the volume of which is 0.3-2 times the volume of the backfill soil.

[0014] According to one aspect of the present invention, the spraying device is used to evenly spray the binder liquid onto the surface of the current layer of backfill soil in the fertilizer tank, comprising: Filling the cementing fluid into the storage tank; The crawler structure is activated by the signal control module, and the crawler structure drives the trolley to move back and forth on the surface of the fertilizer trough backfill soil at a speed of 2m / min; The cementing liquid in the liquid storage tank is sprayed through a water pump mechanism onto the surface of the backfill soil in the fertilizer tank.

[0015] According to one aspect of the present application, further comprising: detecting the calcium carbonate content once every 3 layers of backfill, and continuing backfilling until the end of backfilling when the calcium carbonate content meets the standard.

[0016] According to the scheme of the present application, the liquid in the liquid storage tank can be sensed according to the approximate water level of the pressure sensor, and when the liquid in the liquid storage tank is sprayed out, the pressure sensor senses the pressure change and sends a signal to the signal control module, and the signal control module receives the signal to stop the movement of the track structure and sends a signal to the specific instrument, and the construction personnel replenish the biological activator or the cementing liquid according to the signal.

[0017] According to the scheme of the present application, the biological activator is filled into the liquid storage tank, and the track reciprocates in the fertilizer groove, and the signal control module controls the water pumping mechanism by receiving the spraying signal to spray the biological activator from the spray pipes on both sides and the front, and the biological activator is sprayed to the surface of the backfill soil, and a large number of bacillus pasteurii in the soil is induced to reproduce, and the spraying device can also spray cementing liquid, and the bacillus pasteurii reproduces in the fertilizer groove backfill soil body by using the effective components in the cementing liquid, thereby realizing the reinforcement of the backfill soil. The construction cost of the present application is low and the construction is simple, and new bacteria do not need to be introduced into the backfill soil area, and the original biological environment is not damaged.

[0018] According to the scheme of the present application, the spraying device based on the biological activator technology is provided, and during construction, the biological activator is injected into the liquid storage tank, and the special device carried by the track moves uniformly in the fertilizer groove. The signal control module monitors the spraying instruction in real time, accurately controls the water pumping mechanism, and uniformly sprays the biological activator to the surface layer of the backfill soil through the spray pipes on both sides and the front of the equipment. In addition, the spraying device can also spray cementing solution. At the same time, the pressure sensor senses the liquid capacity in the liquid storage tank at any time to timely remind the construction personnel to supplement the biological activator or the cementing liquid, the spraying device is easy to operate and has low cost, and the narrow working space of the fertilizer groove and the difficulty of manual operation are well solved. At the same time, a camera is installed in front of the spraying device, which can be used for observing the infiltration degree of the backfill soil, so as to judge whether the biological activator or the cementing liquid needs to be sprayed again.

[0019] According to the solution of the present invention, a construction method for fertilizer tank backfill reinforcement based on biostimulation technology is provided. The biostimulation liquid is evenly sprayed onto the surface of the fertilizer tank backfill soil, causing the original pasteurian bacteria and other bacteria in the soil to multiply in large quantities. After standing for a period of time, the cementing liquid is evenly sprayed onto the surface of the fertilizer tank backfill soil. The large-scale multiplication of pasteurian bacteria will induce the calcium ions in the cementing liquid to form calcium carbonate precipitation, thereby reinforcing the backfill soil. Compared with the existing fertilizer tank reinforcement method based on MICP, this method does not require the configuration of a large amount of biological bacterial liquid, saving costs and transportation time. At the same time, it will not cause ecological damage to the original local bacteria. In addition, the original pasteurian bacteria in the soil are more evenly distributed in the soil than the introduced foreign bacteria, resulting in a better reinforcement effect on the soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view schematically showing a spraying device based on biostimulation technology according to one embodiment of the present invention; Figure 2 A perspective view schematically showing a liquid storage tank according to one embodiment of the present invention; Figure 3 A perspective view schematically showing a signal control module according to an embodiment of the present invention; Figure 4a and Figure 4b Schematically showing three-dimensional views of a water pumping mechanism according to an embodiment of the present invention from different perspectives; Figure 5 A perspective view schematically showing a crawler structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only intended to enable those skilled in the art to better understand and implement the present invention, rather than to imply any limitation on the scope of the present invention.

[0022] As used herein, the term "including" and variations thereof are to be interpreted as open-ended terms meaning "including, but not limited to." The term "based on" is to be interpreted as "based, at least in part, on." The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment."

[0023] Figure 1 A perspective view schematically showing a spraying device based on biostimulation technology according to one embodiment of the present invention; Figure 2 A perspective view schematically showing a liquid storage tank according to one embodiment of the present invention; Figure 3 A perspective view schematically showing a signal control module according to an embodiment of the present invention; Figure 4aand Figure 4b Schematically showing three-dimensional views of a water pumping mechanism according to an embodiment of the present invention from different perspectives; Figure 5 A perspective view schematically shows a crawler structure according to an embodiment of the present invention. Figure 1-Figure 5 As shown, in this embodiment, the spraying device based on bioinspiration technology includes: Liquid storage tank 1, used for containing biostimulation liquid or cementing liquid; The signal control module 2 is supported below the liquid storage tank 1; The pump mechanism 3 is supported below the liquid storage tank 1 and is electrically connected to the signal control module 2. The pump mechanism 3 sprays the biostimulating liquid or cementing liquid in the liquid storage tank 1 from both sides and the front of the travel route to the surface of the fertilizer tank backfill soil according to the control of the signal control module 2. The crawler structure 4 is supported below the signal control module 2 and the water pump mechanism 3 and is used to drive the entire device to move on the backfill soil of the fertilizer tank; A camera 5 is provided on one side of the crawler structure 4 close to the water pump mechanism 3 for observing the state of the backfill soil after spraying the biostimulating liquid or the cementing liquid.

[0024] Furthermore, according to one embodiment of the present invention, the top surface of the liquid storage tank 1 is provided with a liquid filling port 101, and the liquid filling port 101 can be covered by a cover 103. The bottom of the liquid storage tank 1 is provided with a first connecting plate 102, which extends from the bottom of the liquid storage tank 1 and has connecting holes 1021 on the extended portion; Figure 1 and Figure 2 As shown, in this embodiment, in order to illustrate the overall structural relationship, the present invention only shows a portion of the first connecting plate 102 extending from the bottom of the liquid storage tank 1. In fact, in order to ensure a stable connection between the first connecting plate 102 and the second connecting plate 201 mentioned below, all four sides of the first connecting plate 102 extend from the bottom of the liquid storage tank 1, thereby facilitating the connection with the second connecting plate 201 through the connecting posts 205 and the nuts. The bottom surface of the first connecting plate 102 is also provided with a mounting hole (not shown in the figure); The bottom surface of the liquid storage tank 1 is provided with a liquid outlet (not shown in the figure), and the first connecting plate 102 is provided with a corresponding through hole (not shown in the figure), and the water pumping mechanism 3 is connected to the liquid outlet through the through hole.

[0025] Further, according to an embodiment of the present invention, the signal control module 2 includes: a second connection board 201, an integrated circuit board 202, a pressure sensor 203, a power supply 204 and a plurality of connection columns 205; The second connecting plate 201 is connected to the first connecting plate 102 via a plurality of connecting columns 205; The integrated circuit board 202 is supported on the second connecting board 201; Pressure sensor 203 is supported on and electrically connected to integrated circuit board 202, with its pressure collection end (sensing element end) supported in the mounting hole. This arrangement allows pressure sensor 203 to monitor the weight of liquid reservoir 1, determining whether the reservoir 1 contains biostimulant fluid or binder fluid based on the weight. The monitoring signal is then transmitted to integrated circuit board 202, which processes the signal and issues corresponding control signals to pump mechanism 3 and track structure 4, enabling water pumping and spraying, and track travel.

[0026] Furthermore, according to one embodiment of the present invention, the water pumping mechanism 3 includes: two sections of water pipes 301, a water pump 302, a flow divider 303, a nozzle 304 and a fixing column 305; One end of a water delivery pipe 301 is connected to the liquid outlet, and the other end is connected to the water pump 302; The water pump is electrically connected to the integrated circuit board 202; The water pump 302 is connected to the diverter 303 through another section of the water pipe 301; The nozzles 304 are arranged on both sides and the front of the diverter 303; One end of the fixing column 305 is supported on the side of the diverter 303 facing away from the water pump 302, and the other end is supported on the second connecting plate 201. This arrangement allows the water pump 302 to pump liquid into the diverter 303, which then distributes the liquid to the multiple nozzles 304. The multiple nozzles 304 then spray the liquid from different directions onto the backfill surface.

[0027] Furthermore, according to one embodiment of the present invention, the crawler structure 4 includes: a crawler 401, an engine 402, a bottom plate 403 and a driving wheel 404; The four engines 402 are supported at the four corners of the base plate 403 and are electrically connected to the integrated circuit board 202 respectively; The four driving wheels 404 are connected to the output shafts of the four engines 402 in a one-to-one correspondence; The two crawlers 401 are respectively wound around the two driving wheels 404 on one side; The bottom plate 403 is connected to the second connecting plate 201 via a plurality of connecting rods (having the same or similar structure as the connecting posts 205 ).

[0028] According to the above scheme of the present invention, the approximate water level of the liquid in the liquid storage tank 1 can be sensed by the pressure sensor 203. When the liquid in the liquid storage tank 1 is sprayed, the pressure sensor 203 senses the pressure change and sends a signal to the signal control module 2. The signal control module 2 receives the signal and stops the movement of the track structure 4 and sends a signal to a specific instrument. The construction personnel will replenish the liquid storage tank 1 with biostimulating liquid or binder liquid according to the signal.

[0029] According to the above-mentioned solution of the present invention, the biostimulating liquid is loaded into the liquid storage tank 1, which reciprocates within the fertilizer tank via tracks. The signal control module 2 controls the water pump mechanism 3 by receiving the spraying signal, spraying the biostimulating liquid from the nozzles on both sides and the front, spraying it onto the surface of the backfill soil, inducing the large-scale reproduction of Bacillus pasteurianus in the soil. At the same time, the spraying device can also spray the cementing liquid. The reproduced Bacillus pasteurianus uses the active ingredients in the cementing liquid to form a precipitate in the fertilizer tank backfill soil, thereby achieving the reinforcement of the backfill soil. The construction cost of the present invention is low and the construction is simple. There is no need to introduce new bacteria into the backfill area, and the original biological environment will not be damaged.

[0030] According to the above-mentioned scheme of the present invention, the spraying device based on biostimulation technology provided by the present invention, during construction, first injects the biostimulation liquid into the liquid storage tank, and the special device equipped with tracks moves back and forth at a constant speed in the fertilizer tank. The signal control module monitors the spraying instructions in real time, accurately controls the water pump mechanism, and evenly sprays the biostimulation liquid onto the surface of the backfill soil through the nozzles on both sides and in front of the equipment. In addition, the spraying device can also spray the cementing solution. At the same time, the pressure sensor constantly senses the liquid capacity in the liquid storage tank, thereby promptly reminding the construction personnel to replenish the biostimulation liquid or cementing liquid. This spraying device is easy to operate and has low cost, and it solves the shortcomings of the narrow working space of the fertilizer tank and the difficulty of manual operation. At the same time, a camera is installed in front of the spraying device, which can be used to observe the degree of infiltration of the backfill soil, so as to determine whether it is necessary to spray the biostimulation liquid or cementing liquid again.

[0031] Furthermore, to achieve the above-mentioned purpose, the present invention also provides a fertilizer tank backfill construction method implemented by the above-mentioned spraying device based on biostimulation technology, comprising: S1: backfill fertilizer trough in layers; S2: prepare biostimulation solution; S3: using the spraying device to evenly spray the biostimulation liquid onto the surface of the current layer of backfill soil in the fertilizer tank; S4: prepare the cementing fluid; S5: using the spraying device to evenly spray the cementing liquid onto the surface of the current layer of backfill soil in the fertilizer tank; S6: Repeat steps S1-S5 until all layers of backfill soil in the fertilizer trough are completed.

[0032] Furthermore, according to one embodiment of the present invention, the biostimulation solution is configured as follows: Dissolve 20 g / L yeast extract, 0.01 g / L nickel oxide hexahydrate, 10 g / L urea, and 10 g / L ammonium chloride in water, and mix well to obtain a biostimulation solution; The volume of the biostimulation liquid is 0.3-1.2 times the volume of the backfill soil.

[0033] Furthermore, according to one embodiment of the present invention, a spraying device is used to evenly spray the biostimulation liquid onto the surface of the current layer of backfill soil in the fertilizer tank, comprising: The biostimulating liquid is placed in the liquid storage tank 1; The signal control module 2 controls the engine 402 to start, and the engine 402 drives the driving wheel 404 and the crawler 401 to rotate, driving the spraying device to reciprocate on the surface of the soil in the fertilizer tank at a speed of 2m / min; The biostimulating liquid in the liquid storage tank 1 enters the diverter 303 through the water pump 302, and then enters the four nozzles 304 on both sides and in front of the water pump 302 through the diverter 303. It is sprayed from the conical holes of the nozzles 304 to the surface of the backfill soil in the fertilizer tank; After spraying the biostimulant, the backfill soil was allowed to stand for 12 hours to provide time for the reproduction of Bacillus pasteurianus.

[0034] Furthermore, according to one embodiment of the present invention, the binder solution is configured as follows: Dissolve 12g / L urea, 30g / L calcium chloride, and 0.5g / L yeast extract in water, mix well to obtain a cementing solution, the volume of which is 0.3-2 times the volume of the backfill soil.

[0035] Furthermore, according to one embodiment of the present invention, a spraying device is used to evenly spray the binder liquid onto the surface of the current layer of backfill soil in the fertilizer tank, comprising: The cementing liquid is placed in the liquid storage tank 1; The signal control module 2 controls the engine 402 to start, and the engine 402 drives the driving wheel 404 and the crawler 401 to rotate, driving the spraying device to reciprocate on the surface of the backfill soil in the fertilizer tank at a speed of 2m / min; The cementing liquid in the liquid storage tank 1 enters the diverter 303 through the water pump 302, and then enters the four nozzles 304 on both sides and in front of the water pump 302 through the diverter 303, and is sprayed from the tapered holes of the nozzles 304 to the surface of the fertilizer tank soil.

[0036] In this embodiment, yeast extract is added to the binder to ensure the survival of bacteria in the soil during the reinforcement process. There is no need to let it stand after spraying the binder because covering the new soil layer can maintain temperature and humidity stability and increase construction speed.

[0037] Furthermore, according to one embodiment of the present invention, the method of the present invention further comprises: testing the calcium carbonate content after every three layers of backfill soil are backfilled to judge the backfill quality, and continuing backfilling when the calcium carbonate meets the standard until the backfilling is completed.

[0038] According to the above-mentioned scheme of the present invention, a construction method for fertilizer tank backfill reinforcement based on biostimulation technology is provided. The biostimulation liquid is evenly sprayed onto the surface of the fertilizer tank backfill soil, causing the original pasteurian bacteria and other bacteria in the soil to multiply in large quantities. After standing for a period of time, the cementing liquid is evenly sprayed onto the surface of the fertilizer tank backfill soil. The large-scale multiplication of pasteurian bacteria will induce the calcium ions in the cementing liquid to form calcium carbonate precipitation, thereby reinforcing the backfill soil. Compared with the existing fertilizer tank reinforcement method based on MICP, this method does not require the configuration of a large amount of biological bacterial liquid, saving costs and transportation time. At the same time, it will not cause ecological damage to the original local bacteria. In addition, the original pasteurian bacteria in the soil are more evenly distributed in the soil than the introduced foreign bacteria, resulting in a better reinforcement effect on the soil.

[0039] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

[0040] It should be understood that the size of the serial numbers of each step in the content of the invention and the implementation methods of the present invention does not absolutely mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the implementation methods of the present invention.

Claims

1. A spraying device based on biostimulation technology, characterized in that: include: A liquid storage tank (1) for containing a biostimulating liquid or a cementing liquid; A signal control module (2) is supported below the liquid storage tank (1); A water pump mechanism (3) is supported below the liquid storage tank (1) and is electrically connected to the signal control module (2). According to the control of the signal control module (2), the biostimulating liquid or the cementing liquid in the liquid storage tank (1) is sprayed out from both sides of the travel route and the front to the surface of the fertilizer tank backfill soil; A crawler structure (4) is supported below the signal control module (2) and the water pump mechanism (3) and is used to drive the entire device to move on the backfill soil of the fertilizer tank; A camera (5) is provided on one side of the crawler structure (4) close to the water pump mechanism (3) for observing the state of the backfill soil after spraying the biostimulating liquid or the cementing liquid.

2. The spraying device based on biostimulation technology according to claim 1, characterized in that: The top surface of the liquid storage tank (1) is provided with a liquid injection port (101), and the bottom of the liquid storage tank (1) is provided with a first connecting plate (102). The first connecting plate (102) protrudes from the bottom of the liquid storage tank (1) on all sides, and the protruding portion is provided with a connecting hole (1021); The bottom surface of the first connecting plate (102) is also provided with a mounting hole; The bottom surface of the liquid storage box (1) is provided with a liquid outlet, and the first connecting plate (102) is provided with a corresponding through hole, and the water pumping mechanism (3) passes through the through hole and communicates with the liquid outlet.

3. The spraying device based on biostimulation technology according to claim 2, characterized in that: The signal control module (2) comprises: a second connecting board (201), an integrated circuit board (202), a pressure sensor (203), a power supply (204), and a plurality of connecting columns (205); The second connecting plate (201) is connected to the first connecting plate (102) via a plurality of connecting columns (205); The integrated circuit board (202) is supported on the second connecting board (201); The pressure sensor (203) is supported on the integrated circuit board (202), is electrically connected to the integrated circuit board (202), and its pressure collection end is supported at the mounting hole.

4. The spraying device based on biostimulation technology according to claim 3, characterized in that: The water pumping mechanism (3) comprises: two sections of water delivery pipes (301), a water pump (302), a flow divider (303), a nozzle (304) and a fixing column (305); One end of a section of the water delivery pipe (301) is connected to the liquid outlet, and the other end is connected to the water pump (302); The water pump is electrically connected to the integrated circuit board (202); The water pump (302) is connected to the diverter (303) via another section of the water pipe (301); The nozzles (304) are arranged on both sides and the front of the diverter (303); One end of the fixing column (305) is supported on a side of the diverter (303) away from the water pump (302), and the other end is supported on the second connecting plate (201).

5. The spraying device based on biostimulation technology according to claim 4, characterized in that: The crawler structure (4) comprises: a crawler (401), an engine (402), a bottom plate (403) and a driving wheel (404); The four engines (402) are respectively supported at the four corners of the bottom plate (403) and are respectively electrically connected to the integrated circuit board (202); The four driving wheels (404) are respectively connected to the output shafts of the four engines (402) in a one-to-one correspondence; The two crawlers (401) are respectively wound around the two driving wheels (404) located on one side; The bottom plate (403) is connected to the second connecting plate (201) via a plurality of connecting rods.

6. A fertilizer tank backfill construction method using the biostimulation technology-based spraying device according to any one of claims 1 to 5, characterized in that: include: S1: backfill fertilizer trough in layers; S2: prepare biostimulation solution; S3: using the spraying device to evenly spray the biostimulation liquid onto the surface of the current layer of backfill soil in the fertilizer tank; S4: prepare the cementing fluid; S5: using the spraying device to evenly spray the cementing liquid onto the surface of the current layer of backfill soil in the fertilizer tank; S6: Repeat steps S1-S5 until all layers of backfill soil in the fertilizer trough are completed.

7. The fertilizer tank backfill construction method according to claim 6, characterized in that: The biostimulation solution is configured as follows: Dissolve 20 g / L yeast extract, 0.01 g / L nickel oxide hexahydrate, 10 g / L urea, and 10 g / L ammonium chloride in water, and mix well to obtain a biostimulation solution; The volume of the biostimulation liquid is 0.3-1.2 times the volume of the backfill soil.

8. The fertilizer tank backfill construction method according to claim 6, characterized in that: The spraying device is used to evenly spray the biostimulation liquid onto the surface of the current layer of backfill soil in the fertilizer tank, including: The biostimulation liquid is placed in the liquid storage tank (1); The crawler structure (4) is activated by controlling the signal control module (2), and the crawler structure (4) drives the spraying device as a whole to move back and forth on the surface of the backfill soil in the fertilizer tank at a speed of 2m / min; The biostimulating liquid in the liquid storage tank (1) is sprayed through the water pump mechanism (3) onto the surface of the backfill soil of the fertilizer tank; After spraying the biostimulant solution, the backfill soil was allowed to stand for 12 hours.

9. The fertilizer tank backfill construction method according to claim 6, characterized in that: The configuration of the cementing fluid is: Dissolve 12g / L urea, 30g / L calcium chloride, and 0.5g / L yeast extract in water, mix well to obtain a cementing solution, the volume of which is 0.3-2 times the volume of the backfill soil.

10. The fertilizer tank backfill construction method according to claim 6, characterized in that: The spraying device is used to evenly spray the binder liquid onto the surface of the current layer of backfill soil in the fertilizer tank, including: Filling the cementing liquid into the liquid storage tank (1); The crawler structure (4) is started by controlling the signal control module (2), and the crawler structure (4) drives the trolley to move back and forth on the surface of the backfill soil of the fertilizer trough at a speed of 2m / min; The cementing liquid in the liquid storage tank (1) is sprayed through the water pump mechanism (3) and sprayed onto the surface of the backfill soil of the fertilizer tank.

11. The fertilizer tank backfill construction method according to any one of claims 6 to 10, characterized in that: Also includes: The calcium carbonate content is tested after every three layers of backfill soil. When the calcium carbonate meets the standard, continue backfilling until the backfilling is completed.

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