A liquid spraying device for soil heavy metal pollution control

Abstract

The present invention discloses a liquid medicine spraying device for treating heavy metal contamination in soil, and relates to the technical field of contaminated soil restoration. The liquid medicine spraying device for treating heavy metal contamination in soil includes a drum for conveying soil during the process of spraying the liquid medicine for treating heavy metal contaminated soil. During the process of treating heavy metal contaminated soil using the liquid medicine spraying device, the supporting component, the rotating component, and the spraying component cooperate with each other to spray the treatment liquid medicine onto the conveyed soil, thereby restoring the heavy metal contaminated soil. During the treatment process, the separation component and the treatment component cooperate with each other to separate the soil that has adhered to each other during the spraying process. At the same time, the excess liquid medicine contained in the sticky soil is separated under the action of vibration and falls back into the drum for reuse, thereby reducing the probability of soil adhering to each other during the liquid medicine spraying treatment and restoration process, and ensuring the restoration effect of the contaminated soil.

Description

Technical Field

[0001] The present invention relates to the technical field of contaminated soil restoration, in particular to a liquid medicine spraying device for treating heavy metal pollution in soil. Background Art

[0002] Heavy metal pollution in soil can destroy the physical, chemical and biological properties of the soil, affect the activity and diversity of soil microorganisms, and reduce soil fertility and productivity. Heavy metals can also react with organic and inorganic matter in the soil to form insoluble compounds, reducing the effectiveness of nutrients in the soil and affecting plant growth and development.

[0003] For the restoration treatment of heavy metal contaminated soil, a liquid medicine spraying device can be used to spray the treatment liquid on the heavy metal contaminated soil. The sprayed treatment liquid can form a stable chelate with the heavy metal ions in the soil. The chelating agent molecule has multiple coordinating atoms and can form a ring structure with the heavy metal ions, thereby increasing the stability and solubility of the heavy metal ions. However, in the process of spraying the liquid medicine for the treatment of heavy metal contaminated soil, due to improper operation and other reasons, excessive treatment liquid may be sprayed on part of the soil and cause them to adhere to each other, resulting in reduced air permeability and poor water permeability of the soil after treatment and restoration, and even the destruction of the soil structure, reducing the effect of restoring the contaminated soil. For this reason, we propose a liquid medicine spraying device for the treatment of heavy metal pollution in soil. Summary of the Invention

[0004] The purpose of the present invention is to provide a liquid spraying device for treating heavy metal pollution in soil, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a liquid medicine spraying device for treating heavy metal contaminated soil, comprising a drum for conveying soil during the process of spraying liquid medicine on heavy metal contaminated soil, and further comprising a support assembly disposed on the outside of the drum for supporting the drum and a rotating assembly for rotating the drum, wherein the drum is disposed in an inclined state, and a spraying assembly is disposed on the drum for treating the soil conveyed on the drum by spraying liquid medicine, and a separation assembly is disposed inside the drum for separating soil that adheres during the spraying treatment process and a treatment assembly for post-separation treatment;

[0006] The support assembly includes multiple sets of mounting sleeves sleeved on the outside of the drum, multiple sets of support seats for auxiliary support are fixed on the mounting sleeves, an annular groove is opened on the inner side of the mounting sleeve, an annular plate is rotatably connected to the inner side of the annular groove, and the annular plate is sleeved and fixed on the outer side of the drum;

[0007] The spray assembly includes a mounting base arranged on the outside of the drum, a mounting tube is fixed on the mounting base, the upper end of the mounting tube is detachably mounted with a storage tank for liquid supply by means of a thread, the lower end of the mounting tube is connected and fixed with an L-shaped liquid spray pipe, the L-shaped liquid spray pipe is provided with a plurality of groups of spray holes on the tube body inside the drum, and the L-shaped liquid spray pipe is provided with a pumping assembly for pumping out the liquid spray.

[0008] Preferably, the rotating assembly includes a fixing frame fixed to the outside of the mounting sleeve, the mounting seat is fixed to the upper end of the fixing frame, a rotating shaft is rotatably connected to the fixing frame, a gear is fixed to one end of the rotating shaft, a gear ring is fixed to the outer sleeve of the drum, the gear and the gear ring are meshed with each other, and a driving motor for driving the rotating shaft is installed on the fixing frame.

[0009] Preferably, the suction and pressure assembly includes an L-shaped suction and pressure tube that is connected and fixed on the L-shaped spray pipe, two groups of one-way valves are fixed inside the L-shaped spray pipe, one end of the L-shaped suction and pressure tube is between the two groups of one-way valves, and the two groups of one-way valves are connected on the L-shaped spray pipe from one end to the other end of the mounting tube, the interior of the L-shaped suction and pressure tube is slidably connected to a piston plate, the end of the L-shaped suction and pressure tube is slidably connected to a push rod, one end of the push rod is fixed to the piston plate, a first extrusion assembly for extruding the push rod is provided on the rotating shaft, a first spring is sleeved on the outer side of the push rod, and the two ends of the first spring are respectively connected to the interior of the L-shaped suction and pressure tube and the piston plate.

[0010] Preferably, the first extrusion assembly includes a first driving disk fixed on the rotating shaft, and a plurality of first protrusions for pressing against the end of the push rod are fixed on the outer side of the first driving disk in a ring array.

[0011] Preferably, the separation component includes a strip plate arranged inside the drum, a mounting hole is opened on the strip plate, and the strip plate is fixed on the outside of the L-shaped spray pipe under the action of the mounting hole, and the strip plate is connected to a scraper through an elastic component, and the scraper is kept against the top of the inner side of the drum under the elastic force of the elastic component.

[0012] Preferably, the elastic component includes multiple groups of T-shaped rods slidably connected to the strip plate, one end of each group of T-shaped rods is fixed to the scraper, and a second spring is sleeved on the outer side of the T-shaped rod, and the two ends of the second spring are respectively connected to one end of the T-shaped rod and the strip plate.

[0013] Preferably, there are two groups of processing components, and the two groups of processing components are symmetrically arranged on both sides of the scraper. The processing components include a material guide cover plate arranged inside the drum, the material guide cover plate is arranged in an inclined state, and the material guide cover plate is consistent with the inclination direction of the drum. The material guide cover plate is provided with multiple groups of separation holes for separating the liquid medicine inside the soil after falling. The strip plate is provided with a connecting component for connecting the material guide cover plates on the two groups of processing components, and the rotating shaft is provided with a second extrusion component for extruding the material guide cover plate.

[0014] Preferably, the connecting assembly includes a connecting plate fixed between two groups of material guide cover plates, multiple groups of sleeves are fixed on the strip plate, a sliding rod is slidably connected to the sleeve, one end of the sliding rod is fixed to the connecting plate, and a third spring is provided on the outer side of each group of the sleeves.

[0015] Preferably, the second extrusion assembly includes a support frame fixed to the upper end of the strip plate, the support frame is rotatably connected to a transmission shaft, a second drive disk is fixed to the transmission shaft, and a plurality of groups of second protrusions arranged in a circular array and used to press against the connecting plate are fixed to the outer side of the second drive disk, and the transmission shaft and the rotating shaft are connected for transmission through a transmission assembly.

[0016] Preferably, the transmission assembly includes pulleys fixed on the transmission shaft and the rotating shaft, and the two groups of pulleys are connected and transmitted via belts.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In the process of treating heavy metal contaminated soil using the liquid medicine spraying device of the present invention, the treatment liquid medicine is sprayed onto the transported soil through the mutual cooperation of the support component, the rotating component and the spraying component, and the heavy metal contaminated soil is restored. In the treatment process, the separation component and the treatment component cooperate with each other to separate the soil that is adhered to each other during the spraying treatment process, and the excess liquid medicine contained in the auxiliary sticky soil is separated under the action of vibration and falls back into the interior of the drum for reuse, thereby reducing the probability of soil adhesion during the liquid medicine spraying treatment and restoration process and ensuring the effect of restoring the contaminated soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the rotating assembly of the present invention;

[0021] Figure 3 It is a schematic structural diagram of the support assembly of the present invention;

[0022] Figure 4 It is a schematic structural diagram of the spray assembly of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the pumping and pressing assembly of the present invention;

[0024] Figure 6 This is a schematic structural diagram of the first extrusion assembly of the present invention;

[0025] Figure 7 This is a schematic diagram of the processing components and connection components of the present invention;

[0026] Figure 8 It is a schematic structural diagram of the separation component, elastic component, second extrusion component and transmission component of the present invention;

[0027] Figure 9 Schematic diagram of the relationship between the separation component and the processing component and the drum of the present invention;

[0028] Figure 10 Schematic diagram of the processing component structure of the present invention.

[0029] In the figure: 1, roller; 201, mounting sleeve; 202, support base; 203, annular groove; 204, annular plate; 301, fixing frame; 302, rotating shaft; 303, gear; 304, ring gear; 305, driving motor; 401, mounting base; 402, mounting pipe; 403, storage tank; 404, L-shaped spray pipe; 405, spray hole; 501, L-shaped pumping pipe; 502, one-way valve; 503, piston plate; 504, push rod; 505, first spring; 60 1. First drive disc; 602. First protrusion; 701. Strip plate; 702. Mounting hole; 703. Scraper; 801. T-bar; 802. Second spring; 901. Material guide cover plate; 902. Separation hole; 1001. Connecting plate; 1002. Sleeve; 1003. Sliding rod; 1004. Third spring; 1101. Support frame; 1102. Drive shaft; 1103. Second drive disc; 1104. Second protrusion; 1201. Pulley; 1202. Belt. DETAILED DESCRIPTION

[0030] 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.

[0031] Example 1

[0032] See also Figures 1-10The illustrated device for spraying a liquid medicine for treating heavy metal pollution in soil comprises a drum 1 for conveying soil during the process of spraying a liquid medicine for treating heavy metal pollution in soil, a supporting assembly for supporting the drum 1 and a rotating assembly for rotating the drum 1, which are arranged on the outside of the drum 1. The drum 1 is arranged in an inclined state, and a spraying assembly for treating the soil conveyed on the drum 1 by spraying a liquid medicine is provided on the drum 1. A separation assembly for separating the soil adhering to the soil during the spraying treatment process and a treatment assembly for post-separation treatment are provided inside the drum 1.

[0033] The support assembly includes multiple sets of mounting sleeves 201 sleeved on the outside of the drum 1. Multiple sets of support seats 202 for auxiliary support are fixed on the mounting sleeves 201. An annular groove 203 is formed on the inner side of the mounting sleeve 201. An annular plate 204 is rotatably connected to the inner side of the annular groove 203. The annular plate 204 is sleeved and fixed on the outer side of the drum 1.

[0034] The spray assembly includes a mounting base 401 disposed on the outside of the drum 1. A mounting tube 402 is fixed to the mounting base 401. A storage tank 403 for liquid supply is detachably mounted on the upper end of the mounting tube 402 by means of a thread. An L-shaped liquid spray pipe 404 is fixed to the lower end of the mounting tube 402. The L-shaped liquid spray pipe 404 is located inside the drum 1 and has a plurality of spray holes 405 formed on the pipe body. A pumping assembly for pumping out the liquid spray is provided on the L-shaped liquid spray pipe 404.

[0035] It should be noted here that: in the process of using the liquid medicine spraying device to treat heavy metal contaminated soil, the treatment liquid medicine is sprayed onto the transported soil through the mutual cooperation of the support component, the rotating component and the spraying component to restore the heavy metal contaminated soil. In the process of treatment, through the mutual cooperation of the separation component and the treatment component, the soil that is adhered to each other during the spraying treatment process can be separated, and the excess liquid medicine contained in the auxiliary clay soil is separated under the action of vibration and falls back to the inside of the drum 1 for reuse, thereby reducing the chance of soil adhesion during the liquid medicine spraying treatment and restoration process, and ensuring the effect of restoring the contaminated soil.

[0036] Preferably, the rotating assembly includes a fixing frame 301 fixed to the outside of the mounting sleeve 201, a mounting seat 401 fixed to the upper end of the fixing frame 301, a rotating shaft 302 is rotatably connected to the fixing frame 301, a gear 303 is fixed to one end of the rotating shaft 302, a ring gear 304 is fixed to the outer sleeve of the drum 1, the gear 303 and the ring gear 304 are meshed with each other, and a driving motor 305 for driving the rotating shaft 302 is installed on the fixing frame 301;

[0037] It should be noted here that: the gear 303 on the rotating shaft 302 is driven to rotate by the driving motor 305. During the rotation of the gear 303, the gear 303 and the ring gear 304 are meshed with each other to drive the roller 1 to move. During the process of the roller 1 being subjected to force, the annular groove 203 and the annular plate 204 are connected in rotation to make the roller 1 rotate on each group of mounting sleeves 201 after being subjected to force. Since the roller 1 is arranged in an inclined state, during the rotation of the roller 1, the heavy metal contaminated soil put into the inside of the roller 1 is transported toward the inclined side of the roller 1.

[0038] Preferably, the pumping and pressure assembly includes an L-shaped pumping and pressure pipe 501 that is connected and fixed on the L-shaped liquid spraying pipe 404. Two sets of one-way valves 502 are fixed inside the L-shaped liquid spraying pipe 404. One end of the L-shaped pumping and pressure pipe 501 is located between the two sets of one-way valves 502. The two sets of one-way valves 502 are connected to the L-shaped liquid spraying pipe 404 from one end to the other end. The interior of the L-shaped pumping and pressure pipe 501 is slidably connected to a piston plate 503. The end of the L-shaped pumping and pressure pipe 501 is slidably connected to a push rod 504. One end of the push rod 504 The end is fixed to the piston plate 503, and a first extrusion assembly for extruding the push rod 504 is provided on the rotating shaft 302. A first spring 505 is sleeved on the outer side of the push rod 504, and the two ends of the first spring 505 are respectively connected to the inside of the L-shaped suction and pressure tube 501 and the piston plate 503; the first extrusion assembly includes a first driving disk 601 fixed to the rotating shaft 302, and the outer side of the first driving disk 601 is fixed with multiple groups of first protrusions 602 in an annular array for pressing against the end of the push rod 504;

[0039] 504 , and the first spring 505 is pressed against the push rod 504 to release the pressure.

[0040] Preferably, the separation assembly includes a strip plate 701 disposed inside the drum 1. The strip plate 701 is provided with a mounting hole 702. The strip plate 701 is fixed to the outside of the L-shaped liquid spraying pipe 404 through the mounting hole 702. A scraper 703 is connected to the strip plate 701 via an elastic assembly. The scraper 703 is kept in contact with the top of the inner side of the drum 1 under the elastic force of the elastic assembly.

[0041] It should be noted that: because the scraper 703 is kept against the inner side of the rotating drum 1 under the elastic force of the elastic component, the scraper 703 is offset against the sticky soil adhering to the inner wall of the drum 1, so that the sticky soil is separated from the inner wall of the drum 1 and falls onto the material guide cover plate 901 under the action of gravity.

[0042] Preferably, the elastic component includes a plurality of groups of T-shaped rods 801 slidably connected to the strip plate 701, one end of each group of T-shaped rods 801 is fixed to the scraper 703, and a second spring 802 is sleeved on the outer side of the T-shaped rod 801, and the two ends of the second spring 802 are respectively connected to one end of the T-shaped rod 801 and the strip plate 701;

[0043] It should be noted here that: through each group of T-shaped rods 801, the scraper 703 can be guided to extend and retract after being subjected to force, and through the elastic force of each group of second springs 802 and the connecting effect of the T-shaped rods 801, the scraper 703 can be pushed to maintain contact with the inner wall of the drum 1.

[0044] Preferably, two groups of processing components are provided, and the two groups of processing components are symmetrically arranged on both sides of the scraper 703. The processing components include a material guide cover plate 901 provided inside the drum 1. The material guide cover plate 901 is provided in an inclined state, and the inclination direction of the material guide cover plate 901 is consistent with that of the drum 1. The material guide cover plate 901 is provided with multiple groups of separation holes 902 for separating the liquid inside the soil after falling. The strip plate 701 is provided with a connecting component for connecting the material guide cover plates 901 on the two groups of processing components, and the rotating shaft 302 is provided with a second extrusion component for extruding the material guide cover plate 901.

[0045] It should be noted that: the scraper 703 and the sticky soil adhering to the inner wall of the drum 1 offset each other, so that the sticky soil is separated from the inner wall of the drum 1 and falls onto the guide cover plate 901 under the action of gravity. The two sets of guide cover plates 901 are driven to reciprocate and vibrate synchronously through the cooperation of the connecting component and the second extrusion component. Because the guide cover plates 901 are inclined, the reciprocating motion and vibration of the guide cover plates 901 make the sticky soil scraped and separated from the guide cover plates 901 be transported on the guide cover plates 901 and finally to the In the process of guiding the clay soil through the guide cover plate 901, the vibration of the guide cover plate 901 can ensure the normal discharge of the clay soil on the guide cover plate 901. Secondly, the vibration of the guide cover plate 901 can assist in separating the excess liquid medicine contained in the clay soil transported on the guide cover plate 901 under the action of vibration and return it to the inside of the drum 1 through the separation hole 902 for reuse, thereby reducing the probability of soil adhesion during the process of liquid medicine spraying treatment and restoration, and ensuring the effect of restoring the contaminated soil.

[0046] Preferably, the connecting assembly includes a connecting plate 1001 fixed between the two sets of guide shield plates 901, a plurality of sets of sleeves 1002 fixed on the strip plate 701, a slide rod 1003 slidably connected to the sleeve 1002, one end of the slide rod 1003 is fixed to the connecting plate 1001, and a third spring 1004 is sleeved on the outer side of each set of sleeves 1002;

[0047] It should be noted here that: the multiple sets of sleeves 1002 and slide rods 1003 facilitate the telescopic connection of the connecting plate 1001, and the third spring 1004 facilitates the reset of the connecting plate 1001 after the contraction movement.

[0048] Preferably, the second extrusion assembly includes a support frame 1101 fixed to the upper end of the strip plate 701, a transmission shaft 1102 is rotatably connected to the support frame 1101, a second drive disk 1103 is fixed to the drive shaft 1102, and a plurality of groups of second protrusions 1104 arranged in a circular array and used to press against the connecting plate 1001 are fixed to the outer side of the second drive disk 1103. The transmission shaft 1102 and the rotating shaft 302 are connected for transmission via a transmission assembly.

[0049] It should be noted here that: during the rotation of the rotating shaft 302, the transmission shaft 1102 and the second driving disk 1103 on the transmission shaft 1102 are driven to rotate through the connection transmission action of the transmission assembly. During the rotation of the second driving disk 1103, the groups of second protrusions 1104 on the second driving disk 1103 are sequentially squeezed against the connecting plate 1001 and the third spring 1004 on the connecting assembly resets the connecting plate 1001 after squeezing, so that the connecting plate 1001 reciprocates up and down with the rotation of the rotating shaft 302 and vibrates under the elastic force of the third spring 1004.

[0050] Preferably, the transmission assembly includes pulleys 1201 fixed on the transmission shaft 1102 and the rotating shaft 302, and the two sets of pulleys 1201 are connected and transmitted via a belt 1202;

[0051] It should be noted that during the rotation of the rotating shaft 302 , the transmission shaft 1102 rotates along with the rotation of the rotating shaft 302 through the interaction between the belt 1202 and the two sets of pulleys 1201 .

[0052] In this solution: A liquid spraying device for treating heavy metal pollution in soil comprises the following steps:

[0053] In the process of treating heavy metal contaminated soil by using a liquid medicine spraying device, the heavy metal contaminated soil to be treated is put into the interior of the drum 1. After being put in, the gear 303 on the rotating shaft 302 is driven to rotate by the driving motor 305. During the rotation of the gear 303, the gear 303 and the ring gear 304 are meshed with each other to drive the drum 1 to move under force. During the process of the drum 1 being subjected to force, the annular groove 203 and the annular plate 204 are connected in rotation to make the drum 1 rotate on each group of mounting sleeves 201 after being subjected to force. Because the drum 1 is arranged in an inclined state, during the rotation of the drum 1, the heavy metal contaminated soil put into the drum 1 is transported toward the inclined side of the drum 1.

[0054] During the rotation of the rotating shaft 302, the first driving disk 601 is driven to rotate. During the rotation of the first driving disk 601, each group of first protrusions 602 is sequentially abutted against one end of the push rod 504. Through the abutting and squeezing effect of each group of first protrusions 602 on one end of the push rod 504 and the reset effect of the first spring 505 on the push rod 504 after being stressed, the push rod 504 and the piston plate 503 reciprocate on the L-shaped pumping and pressure pipe 501 as the first driving disk 601 rotates. Due to the conduction of the two groups of one-way valves 502, the L-shaped liquid spraying pipe 404 is close to one end of the mounting pipe 402 to the other end. Through the reciprocating motion of the piston plate 503, the treatment liquid inside the installation pipe 402 and the storage tank 403 is pumped and pressed between the two sets of one-way valves 502 of the L-shaped spray pipe 404 and sprayed out from the spray holes 405 through extrusion. The sprayed treatment liquid falls on the heavy metal contaminated soil transported inside the drum 1. The sprayed treatment liquid can form a stable chelate with the heavy metal ions in the soil. The chelating agent molecule has multiple coordination atoms and can form a ring structure with the heavy metal ions, thereby increasing the stability and solubility of the heavy metal ions, thereby achieving the restoration treatment of the heavy metal contaminated soil;

[0055] In the process of spraying liquid treatment, part of the soil will adhere to each other due to the excessive treatment liquid sprayed. The soil that adheres to each other will adhere to the inner side of the drum 1 due to its own viscosity and move synchronously with the rotation of the drum 1. The scraper 703 is kept against the inner side of the rotating drum 1 under the elastic force of the elastic component. The scraper 703 and the sticky soil adhered to the inner wall of the drum 1 are offset, so that the sticky soil is separated from the inner wall of the drum 1 and falls onto the guide cover plate 901 under the action of gravity. Similarly, in the process of rotation of the rotating shaft 302, the transmission assembly drives the transmission shaft 1102 and the second driving disk 1103 on the transmission shaft 1102 to rotate. In the process of rotation of the second driving disk 1103, the second protrusions 1104 on the second driving disk 1103 are sequentially squeezed against the connecting plate 1001 and the third spring 1004 on the connecting assembly resets the squeezed connecting plate 1001. As the rotating shaft 302 rotates, it reciprocates up and down and vibrates under the elastic force of the third spring 1004. During the movement of the connecting plate 1001, the two sets of guide shield plates 901 are driven to reciprocate and vibrate synchronously. Because the guide shield plates 901 are arranged at an angle, the reciprocating motion and vibration of the guide shield plates 901 cause the clay scraped and separated onto the guide shield plates 901 to be transported on the guide shield plates 901 and finally discharged outwards. During the process of guiding the clay soil, the vibration of the guide cover plate 901 can ensure the normal discharge of the clay soil on the guide cover plate 901. Secondly, the vibration of the guide cover plate 901 can assist in separating the excess liquid medicine contained in the clay soil transported on the guide cover plate 901 under the action of vibration and return it to the interior of the drum 1 through the separation hole 902 for reuse, thereby reducing the probability of soil adhesion during the process of liquid medicine spraying treatment and restoration, and ensuring the effect of restoring the contaminated soil.

[0056] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0057] 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 liquid spraying device for treating heavy metal pollution in soil, comprising: Rollers used for transporting soil during the spraying treatment of heavy metal contaminated soil; It is characterized by further comprising: A support assembly for supporting the drum and a rotation assembly for rotating the drum are arranged on the outside of the drum, the drum is arranged in an inclined state, the drum is provided with a spraying assembly for treating the soil transported on the drum by spraying liquid, and the inside of the drum is provided with a separation assembly for separating the soil adhering during the spraying treatment process and a treatment assembly for post-separation treatment; The support assembly includes multiple sets of mounting sleeves sleeved on the outside of the drum, multiple sets of support seats for auxiliary support are fixed on the mounting sleeves, an annular groove is opened on the inner side of the mounting sleeve, an annular plate is rotatably connected to the inner side of the annular groove, and the annular plate is sleeved and fixed on the outer side of the drum; The spray assembly includes a mounting base arranged on the outside of the drum, a mounting tube fixed to the mounting base, an upper end of the mounting tube being detachably mounted with a storage tank for liquid supply by means of a thread, an L-shaped liquid spray pipe fixed to the lower end of the mounting tube, a tube body of the L-shaped liquid spray pipe located inside the drum being provided with a plurality of groups of spray holes, and a pumping assembly for pumping out the liquid spray; The rotating assembly includes a fixing frame fixed to the outside of the mounting sleeve, the mounting seat is fixed to the upper end of the fixing frame, and a rotating shaft is rotatably connected to the fixing frame; The separation assembly includes a strip plate disposed inside the drum, the strip plate having a mounting hole formed therein, and the strip plate being sleeved and fixed to the outside of the L-shaped liquid spray pipe through the mounting hole, and a scraper connected to the strip plate via an elastic assembly, and the scraper being kept against the top of the inner side of the drum under the elastic force of the elastic assembly; The elastic component includes a plurality of groups of T-shaped rods slidably connected to the strip plate, one end of each group of T-shaped rods is fixed to the scraper plate, and a second spring is sleeved on the outer side of the T-shaped rod, and the two ends of the second spring are respectively connected to one end of the T-shaped rod and the strip plate; The processing components are provided in two groups, and the two groups of processing components are symmetrically arranged on both sides of the scraper. The processing components include a material guide cover plate arranged inside the drum, the material guide cover plate is arranged in an inclined state, and the inclination direction of the material guide cover plate is consistent with that of the drum. The material guide cover plate is provided with multiple groups of separation holes for separating the liquid inside the soil after falling. The strip plate is provided with a connecting component for connecting the material guide cover plates on the two groups of processing components, and the rotating shaft is provided with a second extrusion component for extruding the material guide cover plate; The connecting assembly includes a connecting plate fixed between two groups of material guide cover plates, multiple groups of sleeves are fixed on the strip plate, and a sliding rod is slidably connected to the sleeve. One end of the sliding rod is fixed to the connecting plate, and a third spring is sleeved on the outer side of each group of the sleeves.

2. The liquid spraying device for treating heavy metal pollution in soil according to claim 1, characterized in that: A gear is fixed to one end of the rotating shaft, a gear ring is fixed on the outer side of the drum, the gear and the gear ring are meshed with each other, and a driving motor for driving the rotating shaft is installed on the fixing frame.

3. The liquid spraying device for treating heavy metal pollution in soil according to claim 2, characterized in that: The pumping and pressure-extraction assembly includes an L-shaped pumping and pressure-extraction pipe that is connected and fixed on the L-shaped spray pipe, two groups of one-way valves are fixed inside the L-shaped spray pipe, one end of the L-shaped pumping and pressure-extraction pipe is located between the two groups of one-way valves, and the two groups of one-way valves are connected on the L-shaped spray pipe from one end to the other end of the mounting pipe. The interior of the L-shaped pumping and pressure-extraction pipe is slidably connected to a piston plate, and the end of the L-shaped pumping and pressure-extraction pipe is slidably connected to a push rod, one end of the push rod is fixed to the piston plate, and a first extrusion assembly for extruding the push rod is provided on the rotating shaft, and a first spring is sleeved on the outer side of the push rod, and the two ends of the first spring are respectively connected to the interior of the L-shaped pumping and pressure-extraction pipe and the piston plate.

4. The liquid spraying device for treating heavy metal pollution in soil according to claim 3, characterized in that: The first extrusion assembly includes a first driving disk fixed on a rotating shaft, and a plurality of first protrusions for pressing against the end of the push rod are fixed on the outer side of the first driving disk in a ring array.

5. The liquid spraying device for treating heavy metal pollution in soil according to claim 4, characterized in that: The second extrusion assembly includes a support frame fixed to the upper end of the strip plate, the support frame is rotatably connected to a transmission shaft, a second drive disk is fixed to the transmission shaft, and a plurality of second protrusions arranged in a circular array and used to press against the connecting plate are fixed to the outer side of the second drive disk, and the transmission shaft and the rotating shaft are connected for transmission through a transmission assembly.

6. The liquid spraying device for treating heavy metal pollution in soil according to claim 5, characterized in that: The transmission assembly includes pulleys fixed on the transmission shaft and the rotating shaft, and the two groups of pulleys are connected and transmitted via belts.

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