Treatment and detection device for composite contaminated soil

Abstract

The invention provides a composite contaminated soil treatment and detection device, which belongs to the technical field of soil detection, and comprises a chromatographic instrument, an evaporation unit and a material box, the evaporation unit comprises an evaporation box communicated with a gas inlet of the chromatograph, an evaporation disc rotationally connected to the interior of the evaporation box and a first driving part in transmission connection to the evaporation disc, and the first driving part drives the evaporation disc to rotate with the vertical direction as a rotating shaft; the material box is arranged in the evaporation box in a penetrating mode and extends in the radial direction of the evaporation disc, the bottom end of the material box and the evaporation disc are arranged in a spaced mode, the bottom of the outer wall of the material box is fixedly connected with a thickness limiting block, the thickness limiting block extends in the radial direction of the evaporation disc, and the lowest point of the thickness limiting block is not higher than the lowest point of the material box. The material box is provided with a vertically-through material conveying channel, and a valve is installed at the bottom of the material conveying channel. The accuracy of the detection result is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of soil detection, and in particular relates to a composite contaminated soil processing and detection device. Background Art

[0002] Ecological restoration is a comprehensive method of repairing polluted environments, guided by ecological principles, based on biological restoration, and combining various physical restoration, chemical restoration, and engineering and technical measures to achieve the best results and lowest costs through optimized combination. The smooth implementation of ecological restoration requires the participation of multiple disciplines such as ecology, physics, chemistry, botany, microbiology, molecular biology, cultivation, and environmental engineering. The repair and maintenance of damaged ecosystems involves a variety of ecological theories such as ecological stability, ecological plasticity, and steady-state transformation.

[0003] The most critical link in ecological restoration is soil "diagnosis," or soil testing. Scientific and accurate soil testing not only provides a basis for decision-making on restoration plans but also serves as the foundation and prerequisite for the entire ecological restoration process. Through systematic testing and analysis, technicians can accurately determine the types, concentrations, and spatial distribution characteristics of pollutants in the soil, and thus formulate targeted treatment strategies.

[0004] Currently, soil testing typically involves evaporating the soil at high temperatures. The resulting gas is extracted using an air pump and injected into a chromatograph for gas chromatography analysis. However, the sampled soil is deposited directly on a heated surface, where the soil thickness varies. This results in uneven heating, which in turn affects the accuracy of test results. Summary of the Invention

[0005] The present invention provides a composite contaminated soil treatment and detection device, which aims to solve the technical problem of inaccurate detection results caused by uneven soil heating.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a composite contaminated soil treatment and detection device, including a chromatograph and: An evaporation unit comprises an evaporation box connected to the air inlet of the chromatograph, an evaporation plate rotatably connected to the evaporation box, and a first driving member transmission-connected to the evaporation plate, wherein the first driving member drives the evaporation plate to rotate with the up-and-down direction as the rotation axis; A material box is provided in the evaporation box and is fixedly connected to the evaporation box. The material box extends radially along the evaporation disk. The bottom end of the material box is spaced apart from the evaporation disk. A limiting thickness block is fixed to the bottom of the outer wall of the material box. The limiting thickness block extends radially along the evaporation disk. The lowest point of the limiting thickness block is not higher than the lowest point of the material box. The material box is provided with a material flow channel which passes through from top to bottom. A valve is installed at the bottom of the material flow channel.

[0007] In a possible implementation, a cloth-feeding unit is provided at the top of the material-feeding channel, and the cloth-feeding unit includes: A material box, connected to the top of the material-feeding channel, the material box extending along the radial direction of the evaporation pan, a feed port being opened at one end of the top wall of the material box, a discharge port being opened at the bottom wall of the material box, and the discharge port extending along the length direction of the material box; A cloth roller, rotatably connected to the material box, and a spiral cloth blade being provided on the outer periphery of the cloth roller; A second driving member, drivingly connected to the cloth roller, and configured to drive the cloth roller to rotate with the extension direction of the material box as the rotation axis.

[0008] In a possible implementation, the treatment and detection device for the composite contaminated soil further includes a material pressing unit, and the material pressing unit includes: A first telescopic member, fixedly connected between the material box and the material tank, and the first telescopic member telescoping in the vertical direction; A blocking assembly, connected to the material box, and configured to block the discharge port; Wherein, when the first telescopic member is activated, the blocking assembly blocks the discharge port; when the second driving member is activated, the discharge port is in an open state.

[0009] In a possible implementation, a receiving cavity is provided on the inner wall of the discharge port, the blocking assembly is disposed in the receiving cavity, and the blocking assembly includes: A second telescopic member, with a telescopic direction perpendicular to the extension direction of the discharge port, and a fixed end of the second telescopic member fixedly connected to the inner wall of the receiving cavity; A sealing plate, with a plate surface parallel to the horizontal direction; A third telescopic member, telescoping in the vertical direction, a fixed end of the third telescopic member fixedly connected to a movable end of the second telescopic member, and a movable end of the third telescopic member fixedly connected to the top surface of the sealing plate.

[0010] In a possible implementation, a receiving groove is provided on the inner wall of the receiving cavity, the receiving groove is opened in the vertical direction, a baffle is slidably connected in the receiving groove, an elastic member is fixedly connected between the inner wall of the receiving groove and the baffle, and extrusion surfaces are opened on both sides of the bottom of the baffle.

[0011] In a possible implementation, the sealing plate abuts against the inner bottom wall at the receiving cavity.

[0012] In a possible implementation, a hanging bracket is fixedly connected to the outer wall of the material tank, and the first telescopic member is fixedly connected between the hanging bracket and the material box.

[0013] In a possible implementation, a driving cavity communicating with the material feeding channel is formed in the box body of the material box. The second driving member is arranged on the outer wall of the material box, and the output shaft of the second driving member extends into the driving cavity. A first through hole communicating with the driving cavity is formed in the inner wall of the material box. The material box is penetrated with a second through hole corresponding to the first through hole. A transmission hole aligned with the second through hole is formed in the end face of the cloth roller. A transmission unit is arranged in the driving cavity. The transmission unit includes: A fourth telescopic member that telescopically moves along the axis of the cloth roller and is fixedly connected to the output shaft of the second driving member; A transmission block is fixedly connected to the telescopic end of the fourth telescopic member and is inserted and adapted to the transmission hole, so that the second driving member drives the cloth roller to rotate.

[0014] In a possible implementation, the transmission hole includes a jack formed in the end face of the cloth roller and a synchronous hole formed in the inner wall of the jack; The transmission block includes an insertion block inserted and adapted to the jack and a synchronous block fixedly connected to the outer wall of the insertion block. The synchronous block is inserted and adapted to the synchronous hole.

[0015] In a possible implementation, balls are installed on the outer periphery of the evaporation tray, and the balls are in contact with the inner wall of the evaporation box; A retaining ring is fixedly connected to the top surface of the evaporation tray. The retaining ring is coaxial with the evaporation tray, and the thickness limiting block is arranged in the retaining ring.

[0016] Compared with the prior art, in the initial stage of the composite contaminated soil treatment and detection device provided by the present invention, the valve is in a closed state. At this time, the soil to be detected is added into the material box; after the soil addition is completed, the valve is opened, so that the soil freely falls onto the surface of the evaporation tray under the action of gravity. At this time, the first driving member is started to drive the evaporation tray to rotate, thereby spreading the soil on the surface of the evaporation tray. At the same time, the thickness limiting block is cooperated to form a soil layer with a uniform thickness on the surface of the evaporation tray. The present invention makes the soil thickness at each place on the surface of the evaporation tray the same, reduces errors, and improves the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the evaporation unit adopted in the embodiment of the present invention; Figure 2 It is a schematic structural diagram of the up-and-down movement mode of the material box and the position of the thickness limiting block adopted in the embodiment of the present invention; Figure 3 It is a cross-sectional view of the cloth feeding unit adopted in the embodiment of the present invention; Figure 4 It is a cross-sectional view of the material pressing unit and the baffle adopted in the embodiment of the present invention; Figure 5 Partial cross-sectional view of the connection method between the second driving member and the fabric roller adopted in the embodiment of the present invention; Figure 6 is Figure 5 Partial enlarged schematic view of part A in

[0018] Explanation of reference numerals: 10. Evaporation unit; 101. Evaporation box; 102. Evaporation tray; 1021. Ball; 1022. Retaining ring; 103. First driving member; 20. Material box; 201. Thickness limiting block; 202. Hanger; 203. Driving cavity; 204. First through hole; 30. Fabric unit; 301. Material box; 3011. Feeding port; 3012. Discharging port; 3013. Storage cavity; 3014. Storage groove; 3015. Baffle; 3016. Elastic member; 3017. Second through hole; 302. Fabric roller; 3021. Fabric blade; 3022. Transmission hole; 3023. Insertion hole; 3024. Synchronization hole; 303. Second driving member; 40. Material pressing unit; 401. First telescopic member; 402. Second telescopic member; 403. Sealing plate; 404. Third telescopic member; 50. Transmission unit; 501. Fourth telescopic member; 502. Transmission block; 5021. Insert block; 5022. Synchronization block. Detailed implementation manners

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] Please refer to Figures 1 to 6 together for an explanation of the treatment and detection device for composite contaminated soil of the present invention. A treatment and detection device for composite contaminated soil includes a chromatograph, an evaporation unit 10, and a material box 20. The evaporation unit 10 includes an evaporation box 101 communicated with the air inlet of the chromatograph, an evaporation tray 102 rotatably connected in the evaporation box 101, and a first driving member 103 drivingly connected to the evaporation tray 102. The first driving member 103 drives the evaporation tray 102 to rotate with the vertical direction as the rotation axis; the material box 20 penetrates through the evaporation box 101 and is fixedly connected to the evaporation box 101. The material box 20 extends along the radial direction of the evaporation tray 102. The bottom end of the material box 20 is spaced from the evaporation tray 102. A thickness limiting block 201 is fixedly connected to the bottom of the outer wall of the material box 20. The thickness limiting block 201 extends along the radial direction of the evaporation tray 102. The lowest point of the thickness limiting block 201 is not higher than the lowest point of the material box 20. The material box 20 is provided with a feeding channel penetrating up and down, and a valve is installed at the bottom of the feeding channel.

[0021] Specifically, the first driving member 103 is a motor, and the valve can be a sluice valve.

[0022] It should be noted that the evaporation tank 101 is provided with a material taking port, and a plug plate is in interference fit in the material taking port. After the detection work on the soil is completed, the staff can take out the plug plate from the material taking port, then take out the soil on the surface of the evaporation pan and clean the evaporation pan. After the cleaning is completed, the staff then inserts the plug plate into the material taking port.

[0023] For the processing and detection device for composite polluted soil provided in this embodiment, compared with the prior art, at the initial stage, the valve is in a closed state, and at this time, the soil to be detected is added into the material box 20; after the soil is added, the valve is opened, so that the soil freely falls onto the surface of the evaporation pan 102 under the action of gravity. At this time, the first driving member 103 starts to drive the evaporation pan 102 to rotate, thereby spreading the soil on the surface of the evaporation pan 102, and at the same time, cooperating with the thickness limiting block 201 to form a soil layer with a uniform thickness on the surface of the evaporation pan 102. The present invention makes the soil thickness at each place on the surface of the evaporation pan 102 the same, reduces errors, and improves the accuracy of the detection result.

[0024] In some embodiments, refer to Figure 2 、 Figure 3 and Figure 5 , a feeding unit 30 is provided at the top of the material feeding channel. The feeding unit 30 includes a material box 301, a feeding roller 302, and a second driving member 303. The material box 301 is connected to the top of the material feeding channel. The material box 301 extends along the radial direction of the evaporation pan 102. One end of the top wall of the material box 301 is provided with a feeding port 3011, and the bottom wall of the material box 301 is provided with a discharging port 3012. The discharging port 3012 extends along the length direction of the material box 301; the feeding roller 302 is rotatably connected to the material box 301, and a spiral feeding blade 3021 is provided on the outer circumference of the feeding roller 302; the second driving member 303 is in transmission connection with the feeding roller 302 and is used to drive the feeding roller 302 to rotate with the extending direction of the material box 301 as the rotation axis.

[0025] Specifically, the second driving member 303 is a motor.

[0026] The second driving member 303 starts to drive the feeding blade 3021 to rotate. During the rotation process, the feeding blade 3021 pushes the soil forward, and the soil forms an axial laminar flow movement inside the material box 301 and cooperates with the discharging port 3012, so that the soil uniformly enters the material box 20, improving the uniformity of the soil in the material box 20, and thus improving the radial uniformity of the soil falling on the evaporation pan 102.

[0027] In some embodiments, refer to Figure 2 and Figure 4, The treatment and detection device for composite polluted soil further includes a material pressing unit 40. The material pressing unit 40 includes a first telescopic member 401 and a plugging assembly. The first telescopic member 401 is fixedly connected between the material box 301 and the material tank 20, and the first telescopic member 401 telescopically moves in the up and down direction; the plugging assembly is connected to the material box 301 for plugging the discharge port 3012.

[0028] Wherein, when the first telescopic member 401 is activated, the plugging assembly plugs the discharge port 3012; when the second driving member 303 is activated, the discharge port 3012 is in an open state.

[0029] Specifically, a receiving cavity 3013 is formed in the inner wall of the discharge port 3012. The plugging assembly is arranged in the receiving cavity 3013. The plugging assembly includes a second telescopic member 402, a sealing plate 403 and a third telescopic member 404. The telescopic direction of the second telescopic member 402 is perpendicular to the extending direction of the discharge port 3012, and the fixed end of the second telescopic member 402 is fixedly connected to the inner wall of the receiving cavity 3013; the plate surface of the sealing plate 403 is parallel to the horizontal direction; the third telescopic member 404 telescopically moves in the up and down direction, the fixed end of the third telescopic member 404 is fixedly connected to the movable end of the second telescopic member 402, and the movable end of the third telescopic member 404 is fixedly connected to the top surface of the sealing plate 403.

[0030] Optionally, the second driving member 303 can be arranged in the material box 301.

[0031] It should be noted that the first telescopic member 401, the second telescopic member 402 and the third telescopic member 404 can all be telescopic oil cylinders, electric cylinders or hydraulic cylinders.

[0032] After adding soil into the material tank 20, at this time, the soil in the material box 301 is just used up. Then the valve is opened, and the soil in the material tank 20 falls onto the surface of the evaporation tray 102. Before the valve is opened, the second telescopic member 402 drives the third telescopic member 404 and the sealing plate 403 to extend out of the receiving cavity 3013. Then the third telescopic member 404 is activated to drive the sealing plate 403 to extend downward until the bottom wall of the sealing plate 403 is aligned with the bottom wall of the material box 301; after the valve is opened, the first telescopic member 401 is activated to drive the material box 301 to move downward, so that the material box (301) pushes the soil in the material tank 20 to fall, thereby accelerating the falling speed of the soil and preventing the soil from adhering to the inner wall of the material tank 20. After all the soil in the material tank 20 has fallen onto the evaporation tray 102, the third telescopic member 404 is activated to drive the sealing plate 403 to move upward, and then the second telescopic member 402 is activated to drive the third telescopic member 404 and the sealing plate 403 to be received into the receiving cavity 3013.

[0033] In some embodiments, refer to Figure 4, a receiving groove 3014 is formed in the inner wall of the receiving cavity 3013. The receiving groove 3014 is formed in the up and down direction. A baffle 3015 is slidably connected in the receiving groove 3014. An elastic member 3016 is fixedly connected between the inner wall of the receiving groove 3014 and the baffle 3015. Extrusion surfaces are formed on both sides of the bottom of the baffle 3015.

[0034] Specifically, the elastic member 3016 can be a spring or a spring rod.

[0035] When the sealing plate 403 extends out of the receiving cavity 3013, the sealing plate 403 presses the extrusion surface inside the baffle 3015, so that the baffle 3015 is received into the receiving groove 3014; when the sealing plate 403 retracts into the receiving cavity 3013, the extrusion surface outside the baffle 3015 is continuously pressed, so that the baffle 3015 is in a state of being received into the receiving groove 3014. When the sealing plate 403 extends out of or retracts into the receiving cavity 3013, the baffle 3015 is in the receiving groove 3014; during the process that the soil enters the material box 20 through the discharge port 3012, the baffle 3015 extends out of the receiving groove 3014, reducing the possibility of the soil entering the receiving cavity 3013 when passing through the discharge port 3012.

[0036] In some embodiments, refer to Figure 4 , the sealing plate 403 abuts against the inner bottom wall at the receiving cavity 3013.

[0037] During the process that the sealing plate 403 extends out of the receiving cavity 3013, the sealing plate 403 pushes out all the soil entering the receiving cavity 3013, so that the soil falls into the material box 20 from the discharge port 3012, avoiding insufficient subsequent soil samples.

[0038] In some embodiments, refer to Figure 2 , a hanger 202 is fixedly connected to the outer wall of the material box 20, and the first telescopic member 401 is fixedly connected between the hanger 202 and the material box 301.

[0039] If the first telescopic member 401 is placed on the inner wall of the material box 20, the material box 20 needs to be provided with a deeper material passing channel, which will increase the difficulty of adding soil into the material box 301; placing the first telescopic member 401 above the material box 20 reduces the depth of the material passing channel and reduces the difficulty of adding soil into the material box 301.

[0040] Refer to Figure 5 and Figure 6, Another variant implementation of the setting method of the second driving member 303 is that a driving cavity 203 communicating with the material feeding channel is formed in the box body of the material box 20. The second driving member 203 is arranged on the outer wall of the material box 20, and the output shaft of the second driving member 203 extends into the driving cavity 203. A first through hole 204 communicating with the driving cavity 203 is formed in the inner wall of the material box 20. The material box 301 is provided with a second through hole 3017 corresponding to the first through hole 204 in a penetrating manner, and a transmission hole 3022 aligned with the second through hole 3017 is formed in the end face of the cloth roller 302. A transmission unit 50 is arranged in the driving cavity 203. The transmission unit 50 includes a fourth telescopic member 501 and a transmission block 502. The fourth telescopic member 501 telescopically moves along the axis of the cloth roller 302, and the fourth telescopic member 501 is fixedly connected to the output shaft of the second driving member 203; the transmission block 502 is fixedly connected to the telescopic end of the fourth telescopic member 501 and is inserted and adapted to the transmission hole 3022, so that the second driving member 303 drives the cloth roller 302 to rotate.

[0041] Specifically, the transmission hole 3022 includes a socket hole 3023 formed in the end face of the cloth roller 302 and a synchronous hole 3024 formed in the inner wall of the socket hole 3023; the transmission block 502 includes an insertion block 5021 inserted and adapted to the socket hole 3023 and a synchronous block 5022 fixedly connected to the outer wall of the insertion block 5021, and the synchronous block 5022 is inserted and adapted to the synchronous hole 3024.

[0042] It should be noted that the fourth telescopic member 501 can be a telescopic oil cylinder, an electric cylinder, or a hydraulic cylinder; the second driving member 303 is a motor.

[0043] When adding the soil in the material box 301 into the material box 20, the fourth telescopic member 501 extends out to insert the transmission block 502 into the transmission hole 3022, so as to enable the synchronous rotation of the cloth roller 302 and the second driving member 303; when pushing the soil to fall through the material box 301, the fourth telescopic member 501 retracts to pull out the transmission block 502 from the transmission hole 3022, so that the cloth roller 302 and the second driving member 303 are separated.

[0044] Another implementation of the transmission hole 3022 and the transmission block 502 is that the transmission hole 3022 is a square hole and the insertion block 5021 is a square block.

[0045] In some embodiments, refer to Figure 1 , Ball bearings 1021 are installed on the outer periphery of the evaporation pan 102, and the ball bearings 1021 are in contact with the inner wall of the evaporation box 101; a retaining ring 1022 is fixedly connected to the top surface of the evaporation pan 102. The retaining ring 1022 is coaxial with the evaporation pan 102, and the thickness limiting block 201 is arranged in the retaining ring 1022.

[0046] Reduce the friction between the evaporation pan 102 and the inner wall of the evaporation box 101 through the ball 1021, and improve the smooth rotation of the evaporation pan 102; intercept the soil through the retaining ring 1022, so that the soil will not fall from the evaporation pan 102, avoiding insufficient soil samples.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A treatment and detection device for composite polluted soil, comprising a chromatograph, characterized in that, It further includes: An evaporation unit (10), including an evaporation tank (101) communicated with the air inlet of the chromatograph, an evaporation disk (102) rotatably connected inside the evaporation tank (101), and a first driving member (103) drivingly connected to the evaporation disk (102), wherein the first driving member (103) drives the evaporation disk (102) to rotate with the up-and-down direction as the rotation axis; A material box (20) passing through and fixedly connected to the evaporation tank (101), the material box (20) extending along the radial direction of the evaporation disk (102), the bottom end of the material box (20) being spaced from the evaporation disk (102), a thickness-limiting block (201) fixedly connected to the bottom of the outer wall of the material box (20), the thickness-limiting block (201) extending along the radial direction of the evaporation disk (102), the lowest point of the thickness-limiting block (201) not being higher than the lowest point of the material box (20), the material box (20) being provided with a feeding channel penetrating up and down, and a valve being installed at the bottom of the feeding channel.

2. The treatment and detection device for composite contaminated soil according to claim 1, characterized in that, A cloth-feeding unit (30) is provided at the top of the feeding channel, and the cloth-feeding unit (30) includes: A material box (301) connected to the top of the feeding channel, the material box (301) extending along the radial direction of the evaporation disk (102), a feeding port (3011) being opened at one end of the top wall of the material box (301), and a discharging port (3012) being opened at the bottom wall of the material box (301), the discharging port (3012) extending along the length direction of the material box (301); A cloth-feeding roller (302) rotatably connected inside the material box (301), and spiral cloth-feeding blades (3021) being provided on the outer circumference of the cloth-feeding roller (302); A second driving member (303) drivingly connected to the cloth-feeding roller (302) for driving the cloth-feeding roller (302) to rotate with the extending direction of the material box (301) as the rotation axis.

3. The treatment and detection device for the composite polluted soil according to claim 2, wherein, The processing and detection device for the composite contaminated soil further includes a material-pressing unit (40), and the material-pressing unit (40) includes: A first telescopic member (401) fixedly connected between the material box (301) and the material box (20), the first telescopic member (401) telescoping in the up-and-down direction; A blocking assembly connected to the material box (301) for blocking the discharging port (3012); Wherein, when the first telescopic member (401) is activated, the blocking assembly blocks the discharging port (3012); when the second driving member (303) is activated, the discharging port (3012) is in an open state.

4. The treatment and detection device for composite polluted soil according to claim 3, wherein, A receiving cavity (3013) is opened on the inner wall of the discharging port (3012), the blocking assembly is arranged in the receiving cavity (3013), and the blocking assembly includes: A second telescopic member (402) with a telescopic direction perpendicular to the extending direction of the discharging port (3012), and the fixed end of the second telescopic member (402) being fixedly connected to the inner wall of the receiving cavity (3013); A sealing plate (403) with a plate surface parallel to the horizontal direction; The third telescopic member (404) is telescopic in the vertical direction. The fixed end of the third telescopic member (404) is fixedly connected to the movable end of the second telescopic member (402), and the movable end of the third telescopic member (404) is fixedly connected to the top surface of the sealing plate (403).

5. The treatment and detection device for composite polluted soil according to claim 4, characterized in that, A storage groove (3014) is provided on the inner wall of the storage cavity (3013). The storage groove (3014) is provided in the vertical direction. A baffle (3015) is slidably connected in the storage groove (3014). An elastic member (3016) is fixedly connected between the inner wall of the storage groove (3014) and the baffle (3015). Extrusion surfaces are provided on both sides of the bottom of the baffle (3015).

6. The treatment and detection device for composite polluted soil according to claim 4, characterized in that, The sealing plate (403) abuts against the inner bottom wall at the storage cavity (3013).

7. The treatment and detection device for composite contaminated soil according to claim 3, characterized in that, A hanging frame (202) is fixedly connected to the outer wall of the material box (20). The first telescopic member (401) is fixedly connected between the hanging frame (202) and the material box (301).

8. The treatment and detection device for the composite polluted soil according to claim 2, wherein, A driving cavity (203) communicating with the material feeding channel is provided in the box body of the material box (20). The second driving member (303) is provided on the outer wall of the material box (20), and the output shaft of the second driving member (203) extends into the driving cavity (203). A first through hole (204) communicating with the driving cavity (203) is provided on the inner wall of the material box (20). The material box (301) is provided with a second through hole (3017) corresponding to the first through hole (204). A transmission hole (3022) is provided in the end face of the cloth roller (302) and is aligned with the second through hole (3017); A transmission unit (50) is provided in the driving cavity (203). The transmission unit (50) includes: A fourth telescopic member (501) that is telescopic along the axis of the cloth roller (302) and is fixedly connected to the output shaft of the second driving member (303); A transmission block (502) is fixedly connected to the telescopic end of the fourth telescopic member (501) and is inserted and adapted to the transmission hole (3022), so that the second driving member (303) drives the cloth roller (302) to rotate.

9. The treatment and detection device for composite polluted soil according to claim 8, wherein, The transmission hole (3022) includes a jack (3023) provided on the end face of the cloth roller (302) and a synchronous hole (3024) provided on the inner wall of the jack (3023); The transmission block (502) includes an insertion block (5021) that is inserted and adapted to the jack (3023) and a synchronous block (5022) fixedly connected to the outer wall of the insertion block (5021). The synchronous block (5022) is inserted and adapted to the synchronous hole (3024).

10. The treatment and detection device for composite polluted soil according to claim 1, characterized in that, A ball (1021) is installed on the outer periphery of the evaporation pan (102), and the ball (1021) abuts against the inner wall of the evaporation box (101); A retaining ring (1022) is fixedly connected to the top surface of the evaporation pan (102). The retaining ring (1022) is coaxial with the evaporation pan (102). The thickness limiting block (201) is provided in the retaining ring (1022).

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