Infrared thermal desorption remediation device for soil

Abstract

The invention provides a soil infrared thermal desorption repairing device, and belongs to the technical field of soil treatment. Comprising a thermal remediation device and a workbench, a rotating mechanism is installed on the workbench, the output ends of the two sides of the rotating mechanism are engaged with rotating rings, the thermal remediation device is installed in the two rotating rings, and the thermal remediation device comprises a rolling hot soil assembly. According to the device, the spiral guide rail and the strip-shaped spiral plate are arranged and are matched with the day-bead-shaped hot cylinder for use, so that soil can move along the inner wall and the outer wall of the day-bead-shaped hot cylinder when entering the day-bead-shaped hot cylinder, the advancing route of the soil is prolonged to the greatest extent, and meanwhile, after semi-volatile organic compounds in the soil are treated, the soil can be heated to the greatest extent. And the inverted sky-bead-shaped heat cylinder can enable the soil to return along the original path, so that the soil is reheated again, pollutants are more thoroughly removed after the soil is heated for multiple times, and the problems that an existing soil thermal desorption repairing device is large in occupied space and high in use cost are solved.

Description

Technical Field

[0001] The invention relates to the technical field of soil treatment, and in particular to a soil infrared thermal desorption and repair device. Background Art

[0002] Soil remediation is a technical measure to restore the normal function of contaminated soil. Thermal desorption refers to the process of volatilizing organic pollutants and metallic mercury in contaminated soil by direct or indirect heat exchange, and effectively collecting and treating the volatilized pollutants.

[0003] In order to ensure good decontamination effects, existing soil thermal desorption remediation devices need to ensure that the soil has sufficient contact with the heat source. Therefore, the heat source needs to be larger, which occupies a larger space and has a higher cost of use. At the same time, pollutants in the soil will evaporate into gas after being heated. There is a large amount of heat in the gas, and the existing soil thermal desorption remediation devices will cause a waste of this heat energy.

[0004] Therefore, the present application provides a soil infrared thermal desorption repair device to meet the needs. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a soil infrared thermal desorption repair device. By setting a spiral guide rail and a strip spiral plate, and using it in conjunction with a dzi bead-shaped heat cylinder, the soil can move along the inner and outer walls of the dzi bead-shaped heat cylinder when entering the dzi bead-shaped heat cylinder, thereby extending the soil's travel route to the greatest extent. At the same time, when the semi-volatile organic compounds in the soil are treated, reversing the dzi bead-shaped heat cylinder can make the soil return to its original path, thereby reheating the soil again, so that after multiple heating, the pollutants can be removed more thoroughly, thereby solving the problem that the existing soil thermal desorption repair device occupies a large space and has a high cost of use.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A soil infrared thermal desorption repair device, comprising a thermal repair device and a workbench, wherein a rotating mechanism is installed on the workbench, and both output ends of the rotating mechanism are meshed with rotating circles, wherein the thermal repair device is installed in two groups of rotating circles, and the thermal repair device comprises a tumbling hot soil assembly;

[0008] The tumbling hot soil component includes a dzi bead-shaped hot cylinder. The outer walls at both ends of the dzi bead-shaped hot cylinder are respectively fixedly connected to the inner walls of two groups of rotating rings. A spiral guide rail is fixedly installed on the inner wall of the dzi bead-shaped hot cylinder. There are multiple groups of the spiral guide rails, and they are arranged at uniform intervals between two adjacent ones. The multiple groups of spiral guide rails are evenly distributed on the inner wall of the dzi bead-shaped hot cylinder according to a helix. A soil discharge groove is formed in the end wall of the dzi bead-shaped hot cylinder. There are multiple groups of the soil discharge grooves, and they are evenly distributed on the outer wall of the dzi bead-shaped hot cylinder. Multiple groups of soil guiding plates are fixedly installed on the inner wall of the end of the dzi bead-shaped hot cylinder. The soil guiding plates can be used in cooperation with the last spiral guide rail. A strip-shaped spiral plate is fixedly installed on the outer wall of the dzi bead-shaped hot cylinder. There are multiple groups of the strip-shaped spiral plates, and two adjacent strip-shaped spiral plates are communicated with the corresponding soil discharge grooves. The spiral direction of the spiral guide rail is opposite to that of the strip-shaped spiral plate. Two groups of soil retaining buckles are fixedly installed on the outer wall of the middle part of the strip-shaped spiral plate, and the soil retaining buckles are in contact with the outer wall of the dzi bead-shaped hot cylinder.

[0009] Optionally, a sealing ring plate is fixedly installed on the outer wall of the middle part of the dzi bead-shaped hot cylinder. An L-shaped ring plate is fixedly installed on the end wall of the sealing ring plate. There is a gap between the bottom of the L-shaped ring plate and the dzi bead-shaped hot cylinder. Multiple air guiding grooves are formed in the left side wall of the L-shaped ring plate. A sealing shell is fixedly installed on the right outer wall of the L-shaped ring plate through bolts. The outer walls of multiple groups of the strip-shaped spiral plates are all in contact with the inner wall of the sealing shell, and the inner wall of the end of the sealing shell is in sealed contact with the end wall of the dzi bead-shaped hot cylinder. An outer cylinder shell is fixedly installed at the top of the left inner wall of the L-shaped ring plate. An exhaust area is formed between the inner wall of the outer cylinder shell and the outer wall of the sealing shell. The exhaust area is communicated with the inside of the L-shaped ring plate, the inside of the sealing ring plate, and the inside of the sealing shell.

[0010] Optionally, a sealing retaining ring is fixedly installed on the inner wall of the sealing ring plate. The sealing retaining ring is sleeved on the outer wall of the dzi bead-shaped hot cylinder. Multiple ventilation rings are sleeved on the outer wall of the middle part of the dzi bead-shaped hot cylinder, and the multiple ventilation rings are arranged at uniform intervals. The top outer wall of the last ventilation ring is in sealed contact with the left outer wall of the L-shaped ring plate. Multiple ventilation holes are evenly formed in the ventilation rings. The inside of the sealing shell is communicated with the inside of the sealing ring plate through multiple ventilation holes, and the inside of the sealing ring plate is communicated with the inside of the exhaust area through multiple air guiding grooves.

[0011] Optionally, an introduction component is installed on the left side of the tumbling hot soil component. The introduction component includes a transfer shell. The inner wall of the transfer shell is rotationally connected to the mouth of the dzi bead-shaped hot cylinder through a bearing. The transfer shell is fixedly connected to the workbench. A discharge groove is formed in the bottom of the transfer shell. A partition board is inserted into the inner wall of the middle of the discharge groove. An air inlet pipe is fixedly installed on the left side of the transfer shell. The left pipe orifice of the air inlet pipe is externally connected to a blower. A valve shell is fixedly installed on the top pipe orifice of the air inlet pipe. A turning roller is rotationally connected to the inner wall of the valve shell. A motor is fixedly installed on the outer wall of the valve shell. The output shaft of the motor is fixedly connected to the end wall of the turning roller. A feed pipe is fixedly installed on the top valve orifice of the valve shell.

[0012] Optionally, a top shaft is fixedly installed on the end wall of the bead-shaped heat cylinder, and the other end of the top shaft is rotatably connected to the side wall of the workbench. The outer wall of the top shaft is rotatably connected to a support ring through a bearing, and an exhaust pipe is fixedly installed on the outer wall of the support ring. The inner wall of the support ring is provided with multiple groups of through grooves, and the exhaust area is connected to the exhaust pipe through the through grooves. A bearing is installed on the inner wall of the end of the outer cylinder shell, and the inner wall of the end of the outer cylinder shell is rotatably connected to the outer wall of the support ring through a bearing. The top shaft seal passes through the side wall of the exhaust pipe, and a preheating pipe is fixedly installed on the top of the exhaust pipe.

[0013] Optionally, a silo is fixedly installed on the top of the workbench, a feed port is opened on the top of the silo, the top of the feed pipe is connected to the inside of the silo, the preheating pipe seals and passes through the silo, and can preheat the material inside the silo, and an infrared heating device is fixedly installed on the outer wall of the outer cylinder shell.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] In the above scheme, a spiral guide rail and a strip spiral plate are provided and used in conjunction with the bead-shaped heat cylinder. When the soil enters the bead-shaped heat cylinder, the driving rotation mechanism drives the two groups of rotating circles to rotate, thereby driving the whole bead-shaped heat cylinder to rotate. Under the guidance of the spiral guide rail on the inner wall of the bead-shaped heat cylinder, the soil will move from the front of the bead-shaped heat cylinder to the end, and with the guidance of the soil guide plate, the soil in the bead-shaped heat cylinder will be discharged from the soil discharge trough into the two groups of strip spiral plates. At the same time, since the rotation directions of the spiral guide rail and the strip spiral plate are opposite, the soil will move along the outside of the bead-shaped heat cylinder The strip spiral plate connected to the retaining plate moves, thereby transporting the soil to the end of the strip spiral plate. During this process, the infrared heating device can always heat the contaminated soil, thereby removing the semi-volatile organic compounds in the soil. The spiral guide rail and the strip spiral plate can extend the soil's travel route to the greatest extent. At the same time, when the volatile organic compounds and semi-volatile organic compounds in the soil are treated, the reversed dzi bead-shaped heat cylinder can make the soil return to its original path, thereby reheating the soil again, so that after multiple heating, the pollutants can be removed more thoroughly.

[0016] After removing the semi-volatile organic compounds in the soil, they are gasified and blown from the sealing shell to the ventilation ring along with the blown air flow, and enter the sealing ring plate through the ventilation hole on the ventilation ring, and then pass through the air guide groove into the exhaust area, and then pass through the through groove into the exhaust pipe, and finally enter the preheating pipe from the exhaust pipe. When entering the preheating pipe, the soil in the silo can be preheated, thereby eliminating the volatile organic compounds in the soil, and discharged through the preheating pipe to the external exhaust gas treatment unit for treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a soil infrared thermal desorption repair device;

[0019] Figure 2 This is a schematic diagram of the structure inside the silo;

[0020] Figure 3 It is a structural diagram of the connection between the thermal repair device and the rotating mechanism;

[0021] Figure 4 It is a structural diagram of the connection between the thermal repair device and the rotating and infrared heating devices;

[0022] Figure 5 is a schematic diagram of the structure of a thermal repair device;

[0023] Figure 6 for Figure 5 The enlarged view of point A in the middle;

[0024] Figure 7 The installation structure diagram of the hot soil rolling component and the import component;

[0025] Figure 8 This is a schematic diagram of the structure of the imported component;

[0026] Fig. 9 This is a split diagram of the imported component;

[0027] Fig.10 Schematic diagram of the internal structure of the valve housing;

[0028] Fig.11 It is a schematic diagram of the structure of the rolling hot soil component;

[0029] Fig.12 The figure is a schematic diagram of the installation of the vent ring in the sealing ring plate;

[0030] Fig.13 is a schematic diagram of the structure of the ventilating ring;

[0031] Fig.14 It is a cross-sectional view of the tumbling hot soil assembly;

[0032] Fig.15 It is a schematic diagram of the assembly of the sealing shell and the bead-shaped heat cylinder;

[0033] Fig.16 Schematic diagram of the assembly of the outer cylinder shell and the annular ring plate;

[0034] Fig.17Schematic diagram of the assembly of the L-shaped ring plate and the sealing ring plate;

[0035] Fig.18 Schematic diagram of the structure of each component on the dzi bead-shaped heat cylinder;

[0036] Fig.19 Schematic diagram of the structure of the strip-shaped spiral plate;

[0037] Fig. 20 Location map of the excavation position of the soil discharge groove;

[0038] Fig.21 Cross-sectional view of the dzi bead-shaped heat cylinder.

[0039] Reference numerals:

[0040] Thermal repair device 100, tumbling hot soil assembly 110, dzi bead-shaped heat cylinder 111, spiral guide rail 112, soil discharge groove 113, soil guide plate 114, strip-shaped spiral plate 115, soil retaining buckle plate 116, sealing ring plate 120, L-shaped ring plate 121, air guide groove 122, sealing shell 123, sealing retaining ring 124, ventilation ring 125, ventilation hole 126, outer cylinder shell 130, exhaust area 131, introduction assembly 140, transfer shell 141, discharge chute 142, partition plate 143, intake pipe 144, valve housing 145, turning roller 146, motor 147, feed pipe 148, top shaft 150, support ring 151, through groove 152, exhaust pipe 153, preheating pipe 154, workbench 200, rotating mechanism 210, turning circle 220, infrared heating device 230, silo 240, feed inlet 241.

[0041] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed description of the specific implementation mode

[0042] The following combines the accompanying drawings and specific embodiments to describe in detail a soil infrared thermal desorption and repair device provided by the present invention. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0043] As Figures 1 to 21As shown, an embodiment of the present invention provides a soil infrared thermal desorption repair device, comprising a thermal repair device 100 and a workbench 200, a rotating mechanism 210 is installed on the workbench 200, both output ends of the rotating mechanism 210 are meshed with rotating circles 220, the thermal repair device 100 is installed in two groups of rotating circles 220, and the thermal repair device 100 comprises a tumbling hot soil assembly 110;

[0044] The tumbling hot soil assembly 110 includes a bead-shaped heat barrel 111. The outer walls at both ends of the bead-shaped heat barrel 111 are fixedly connected to the inner walls of the two groups of rotating circles 220 respectively. The shape of the bead-shaped heat barrel 111 is set to be narrow at both ends and wide in the middle, and the length of the end is much larger than the front and middle parts. This arrangement can ensure that the soil will not accumulate at the front end of the bead-shaped heat barrel 111 when entering. At the same time, when moving out of the bead-shaped heat barrel 111, it can move closely against the inner wall of the bead-shaped heat barrel 111 to make the soil evenly heated. The inner wall of the bead-shaped heat barrel 111 is fixedly installed with a spiral guide rail 112. There are multiple groups of spiral guide rails 112, and they are evenly spaced between each other. The multiple groups of spiral guide rails 112 are evenly distributed according to the spiral line. On the inner wall of the bead-shaped heat barrel 111, when the bead-shaped heat barrel 111 rotates, the soil can slide on the spiral guide rail 112, which increases the heating time of the soil in the bead-shaped heat barrel 111 and improves the heating efficiency. A soil discharge groove 113 is opened on the end wall of the bead-shaped heat barrel 111. There are multiple groups of soil discharge grooves 113, which are evenly distributed on the outer wall of the bead-shaped heat barrel 111. There are multiple groups of soil guide plates 114 fixedly installed on the inner wall at the end of the bead-shaped heat barrel 111. The soil guide plates 114 can be used in conjunction with the spiral guide rail 112 at the end. The outer wall of the bead-shaped heat barrel 111 is fixedly installed with strip spiral plates 115. There are multiple groups of strip spiral plates 115, and two adjacent groups of strip spiral plates 115 are connected. It is connected to the corresponding soil discharge trough 113, and the rotation direction of the spiral guide rail 112 is opposite to that of the strip spiral plate 115, ensuring that the soil will not change direction during movement, so that it can move smoothly on the inner and outer walls of the bead-shaped heat cylinder 111. Two groups of soil retaining buckle plates 116 are fixedly installed on the outer wall of the middle part of the strip spiral plate 115. The soil retaining buckle plates 116 can prevent the soil from flowing back due to the "climbing state" when moving on the strip spiral plate 115, and the soil retaining buckle plates 116 are in contact with the outer wall of the bead-shaped heat cylinder 111. In the present invention, the driving rotation mechanism 210 drives the two groups of rotating circles 220 to rotate, thereby driving the bead-shaped heat cylinder 111 to rotate as a whole. Due to the guiding effect of the spiral guide rail 112 on the inner wall of the heat barrel 111, the soil will move from the front of the bead-shaped heat barrel 111 to the end, and with the guiding effect of the soil guide plate 114, the soil in the bead-shaped heat barrel 111 will be discharged from the soil discharge trough 113 into the two groups of strip spiral plates 115. At the same time, since the rotation directions of the spiral guide rail 112 and the strip spiral plates 115 are opposite, the soil will move outside the bead-shaped heat barrel 111 along the strip spiral plates 115 connected to the soil retaining buckle plates 116, thereby transporting the soil to the end of the strip spiral plates 115. During this process, the infrared heating device 230 can always heat the contaminated soil, thereby removing semi-volatile organic compounds in the soil.

[0045] As an implementation method in this embodiment, Figures 11 to 17As shown in the figure, a sealing ring plate 120 is fixedly installed on the outer wall of the middle part of the dzi bead-shaped heating cylinder 111. An L-shaped ring plate 121 is fixedly installed on the end wall of the sealing ring plate 120. There is a gap between the bottom of the L-shaped ring plate 121 and the dzi bead-shaped heating cylinder 111. The airflow in the sealing shell 123 can pass through the gap between the bottom of the L-shaped ring plate 121 and the dzi bead-shaped heating cylinder 111. A plurality of air guide grooves 122 are formed on the left side wall of the L-shaped ring plate 121. The air guide grooves 122 can communicate the inside of the sealing ring plate 120 with the L-shaped ring plate 121. A sealing shell 123 is fixedly installed on the right outer wall of the L-shaped ring plate 121 by bolts. The outer walls of a plurality of strip-shaped spiral plates 115 are all in contact with the inner wall of the sealing shell 123, ensuring that the soil can only move within two adjacent strip-shaped spiral plates 115. And the inner wall of the end of the sealing shell 123 is in sealing contact with the end wall of the dzi bead-shaped heating cylinder 111. An outer cylinder shell 130 is fixedly installed at the top of the left inner wall of the L-shaped ring plate 121. An exhaust area 131 is formed between the inner wall of the outer cylinder shell 130 and the outer wall of the sealing shell 123. The exhaust area 131 is communicated with the inside of the L-shaped ring plate 121, the inside of the sealing ring plate 120, and the inside of the sealing shell 123.

[0046] A sealing retaining ring 124 is fixedly installed on the inner wall of the sealing ring plate 120. The sealing retaining ring 124 is sleeved on the outer wall of the dzi bead-shaped heating cylinder 111. The sealing retaining ring 124 plays a role in positioning the installation of the ventilation ring 125. A plurality of ventilation rings 125 are sleeved on the outer wall of the middle part of the dzi bead-shaped heating cylinder 111, and the plurality of ventilation rings 125 are arranged at uniform intervals. The top outer wall of the last ventilation ring 125 is in sealing fit with the left outer wall of the L-shaped ring plate 121. The last ventilation ring 125 can prevent soil from passing through the ventilation ring 125 and entering the sealing ring plate 120. A plurality of ventilation holes 126 are evenly formed on the ventilation ring 125. The aperture of the ventilation holes 126 is smaller than the soil particle size, and it can only allow gas to pass through. The inside of the sealing shell 123 is communicated with the inside of the sealing ring plate 120 through a plurality of ventilation holes 126, and the inside of the sealing ring plate 120 is communicated with the inside of the exhaust area 131 through a plurality of air guide grooves 122.

[0047] In this embodiment, as Figures 7 to 10As shown, an introduction component 140 is installed on the left side of the tumbling hot soil component 110, and the introduction component 140 includes a transfer shell 141. The inner wall of the transfer shell 141 is rotatably connected to the tube mouth of the dzi bead-shaped hot tube 111 through a bearing, and the transfer shell 141 is fixedly connected to the workbench 200. A discharge groove 142 is opened at the bottom of the transfer shell 141, and a partition plate 143 is inserted into the inner wall of the middle part of the discharge groove 142. An air intake pipe 144 is fixedly installed on the left side of the transfer shell 141. The left side of the air intake pipe 144 is externally connected to a fan, and a valve shell 145 is fixedly installed on the top of the air intake pipe 144. The inner wall of the valve shell 145 is rotatably connected to a turning roller 146, and the outer wall of the valve shell 145 is fixedly installed with a motor 147. The output shaft of the motor 147 is fixedly connected to the end wall of the turning roller 146, and a feed pipe 148 is fixedly installed at the top valve port of the valve shell 145. In the present invention, the material bin 240 is After the soil is preheated, the driving motor 147 drives the turning roller 146 to rotate, and the soil in the silo 240 is sent into the air inlet pipe 144 through the feed pipe 148 and the valve housing 145. The airflow of the fan outside the air inlet pipe 144 sends the soil in the air inlet pipe 144 into the bead-shaped heat cylinder 111. In particular, after the volatile organic compounds and semi-volatile organic compounds in the soil are treated, the reversing rotation mechanism 210 reverses the bead-shaped heat cylinder 111. At this time, the treated soil will move along the strip spiral plate 115 on the other side, pass through the soil discharge trough 113, and then move from the end of the bead-shaped heat cylinder 111 to the tube mouth of the bead-shaped heat cylinder 111, and finally enter the intermediate shell 141. The treated soil in the intermediate shell 141 can be discharged from the discharge trough 142 by opening the partition 143.

[0048] As an implementation method in this embodiment, Figure 5 and Figure 6As shown, a top shaft 150 is fixedly installed on the end wall of the bead-shaped heat cylinder 111, and the top shaft 150 supports the bead-shaped heat cylinder 111. The other end of the top shaft 150 is rotatably connected to the side wall of the workbench 200. The outer wall of the top shaft 150 is rotatably connected to a support ring 151 through a bearing. An exhaust pipe 153 is fixedly installed on the outer wall of the support ring 151. A plurality of through grooves 152 are provided on the inner wall of the support ring 151, and the exhaust area 131 is connected to the exhaust pipe 153 through the through grooves 152. A bearing is installed on the inner wall of the end of the outer cylinder shell 130, and the inner wall of the end of the outer cylinder shell 130 is rotatably connected to the outer wall of the support ring 151 through a bearing. 0 The seal penetrates the side wall of the exhaust pipe 153, and a preheating pipe 154 is fixedly installed on the top of the exhaust pipe 153. In the present invention, after removing the semi-volatile organic compounds in the soil, they are gasified and accompanied by the blown-in air flow, and are blown from the sealing shell 123 to the ventilation ring 125, and enter the sealing ring plate 120 through the ventilation hole 126 on the ventilation ring 125, and then pass through the air guide groove 122 to enter the exhaust area 131, and then pass through the through groove 152 to enter the exhaust pipe 153, and finally enter the preheating pipe 154 from the exhaust pipe 153, and are discharged to the external exhaust gas treatment unit through the preheating pipe 154 for treatment.

[0049] As an implementation method in this embodiment, Figures 2 to 4 As shown, a silo 240 is fixedly installed on the top of the workbench 200, and a feed port 241 is opened on the top of the silo 240. The top of the feed pipe 148 is connected to the inside of the silo 240. The soil in the silo 240 can enter the valve shell 145 through the feed pipe 148. The preheating pipe 154 seals and penetrates the silo 240, and can preheat the material inside the silo 240. An infrared heating device 230 is fixedly installed on the outer wall of the outer cylinder shell 130. The infrared heating device 230 uses far-infrared spectroscopy technology to convert thermal energy into far-infrared radiation. The high-quality high-temperature resistor flat belt is energized to generate heat energy, and then the heat is effectively transferred to the sky bead-shaped heat exchanger through the "far-infrared silicon carbide thermal radiation element" with high thermal conductivity and mechanical strength. The inside of the bead-shaped heat cylinder 111 is heated to generate high temperature. In the present invention, the fan is driven to blow air into the air inlet pipe 144, and high temperature is generated in the thermal repair device 100 through the infrared heating device 230. The airflow entering the bead-shaped heat cylinder 111 from the air inlet pipe 144 will be heated, and then pass through the soil discharge groove 113, the strip spiral plate 115, the air vent 126 and the air guide groove 122 to enter the exhaust area 131, and finally pass through the through groove 152 to enter the exhaust pipe 153, and enter the preheating pipe 154 from the exhaust pipe 153 and then be discharged. When entering the preheating pipe 154, the soil in the silo 240 can be preheated, thereby eliminating volatile organic compounds in the soil.

[0050] The working principle of the technical solution provided by the present invention is as follows: the contaminated soil that has been preliminarily treated (the moisture content of the contaminated soil is controlled at about 20%, large stones are prevented from entering, the original soil particle size is controlled below 50 mm, and strips or flocculent objects such as plastic sheets, canvas strips, and iron wires are strictly prohibited from entering) is discharged into the silo 240 through the feed port 241, and at the same time, the fan is driven to blow air into the air inlet pipe 144, and a high temperature is generated in the thermal repair device 100 through the infrared heating device 230. The airflow entering the bead-shaped heat cylinder 111 from the air inlet pipe 144 will be heated, and then pass through the soil discharge groove 113, the strip spiral plate 115, the air vent 126 and the air guide groove 122 to enter the exhaust area 131, and finally pass through the through groove 152 to enter the exhaust pipe 153, and then enter the preheating pipe 154 from the exhaust pipe 153 and be discharged. When entering the preheating pipe 154, the soil in the silo 240 can be preheated, thereby eliminating volatile organic compounds in the soil;

[0051] After preheating the soil in the silo 240, the driving motor 147 drives the turning roller 146 to rotate, and the soil in the silo 240 is sent into the air inlet pipe 144 through the feeding pipe 148 and the valve housing 145. The airflow of the fan outside the air inlet pipe 144 sends the soil in the air inlet pipe 144 into the bead-shaped heat barrel 111. At this time, the driving rotating mechanism 210 drives the two groups of rotating circles 220 to rotate, thereby driving the bead-shaped heat barrel 111 to rotate as a whole. Under the guidance of the spiral guide rail 112 on the inner wall of the bead-shaped heat barrel 111, the soil will move from the front of the bead-shaped heat barrel 111 to the end, and cooperate with the soil guide The guiding effect of the plate 114 discharges the soil in the bead-shaped heat cylinder 111 from the soil discharge groove 113 into the two groups of strip spiral plates 115. At the same time, since the spiral guide rail 112 and the strip spiral plates 115 have opposite rotation directions, the soil outside the bead-shaped heat cylinder 111 will move along the strip spiral plates 115 connected to the soil retaining buckle plate 116, thereby transporting the soil to the end of the strip spiral plates 115. During this process, the infrared heating device 230 can always heat the contaminated soil, thereby removing the semi-volatile organic compounds in the soil, so that it is discharged from the preheating pipe 154 to the external exhaust gas treatment unit along with the air flow;

[0052] After the treatment of the volatile organic compounds and semi-volatile organic compounds in the soil is completed, the reversing rotation mechanism 210 causes the bead-shaped heat cylinder 111 to reverse. At this time, the treated soil will move along the strip spiral plate 115 on the other side, pass through the soil discharge trough 113, and then move from the end of the bead-shaped heat cylinder 111 to the tube mouth of the bead-shaped heat cylinder 111, and finally enter the transfer shell 141. The treated soil in the transfer shell 141 can be discharged from the discharge trough 142 by opening the partition 143.

[0053] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A soil infrared thermal desorption repair device, comprising a thermal repair device (100) and a workbench (200), characterized in that: A rotating mechanism (210) is installed on the workbench (200). Both output ends of the rotating mechanism (210) are engaged with rotating rings (220). The thermal repair device (100) is installed inside the two rotating rings (220). The thermal repair device (100) includes a tumbling hot soil component (110). The tumbling hot soil component (110) includes a dzi - bead - shaped hot cylinder (111). The outer walls at both ends of the dzi - bead - shaped hot cylinder (111) are respectively fixedly connected to the inner walls of the two rotating rings (220). A spiral guide rail (112) is fixedly installed on the inner wall of the dzi - bead - shaped hot cylinder (111). There are multiple groups of the spiral guide rails (112), and they are arranged at uniform intervals between each other. The multiple groups of spiral guide rails (112) are evenly distributed on the inner wall of the dzi - bead - shaped hot cylinder (111) according to a spiral line. A soil discharge groove (113) is opened on the end wall of the dzi - bead - shaped hot cylinder (111). There are multiple groups of the soil discharge grooves (113), and they are evenly distributed on the outer wall of the dzi - bead - shaped hot cylinder (111). Multiple groups of soil guiding plates (114) are fixedly installed on the inner wall at the end of the dzi - bead - shaped hot cylinder (111). The soil guiding plates (114) can be used in cooperation with the last spiral guide rail (112). A strip - shaped spiral plate (115) is fixedly installed on the outer wall of the dzi - bead - shaped hot cylinder (111). There are multiple groups of the strip - shaped spiral plates (115), and the adjacent two strip - shaped spiral plates (115) are communicated with the corresponding soil discharge grooves (113). The spiral direction of the spiral guide rail (112) is opposite to the spiral direction of the strip - shaped spiral plate (115). Two soil retaining buckle plates (116) are fixedly installed on the outer wall in the middle of the strip - shaped spiral plate (115), and the soil retaining buckle plates (116) are in contact with the outer wall of the dzi - bead - shaped hot cylinder (111).

2. A soil infrared thermal desorption repair device according to claim 1, characterized in that: A sealing ring plate (120) is fixedly installed on the outer wall in the middle of the dzi - bead - shaped hot cylinder (111). An L - shaped ring plate (121) is fixedly installed on the end wall of the sealing ring plate (120). There is a gap between the bottom of the L - shaped ring plate (121) and the dzi - bead - shaped hot cylinder (111). Multiple groups of air guiding grooves (122) are opened on the left side wall of the L - shaped ring plate (121). A sealing shell (123) is fixedly installed on the right outer wall of the L - shaped ring plate (121) through bolts. The outer walls of the multiple groups of strip - shaped spiral plates (115) are all in contact with the inner wall of the sealing shell (123), and the inner wall at the end of the sealing shell (123) is in sealed contact with the end wall of the dzi - bead - shaped hot cylinder (111). An outer cylinder shell (130) is fixedly installed at the top of the left inner wall of the L - shaped ring plate (121). An exhaust area (131) is formed between the inner wall of the outer cylinder shell (130) and the outer wall of the sealing shell (123). The exhaust area (131) is communicated with the inside of the L - shaped ring plate (121), the inside of the sealing ring plate (120), and the inside of the sealing shell (123).

3. A soil infrared thermal desorption repair device according to claim 2, characterized in that: A sealing retaining ring (124) is fixedly installed on the inner wall of the sealing ring plate (120), and the sealing retaining ring (124) is sleeved on the outer wall of the dzi bead-shaped heat tube (111). A plurality of ventilation rings (125) are sleeved on the middle outer wall of the dzi bead-shaped heat tube (111), and the plurality of ventilation rings (125) are evenly spaced. The top outer wall of the most distal ventilation ring (125) is sealed with the left outer wall of the dzi bead-shaped ring plate (121), and a plurality of ventilation holes (126) are evenly arranged on the ventilation ring (125). The interior of the sealing shell (123) is connected to the interior of the sealing ring plate (120) through the plurality of ventilation holes (126), and the interior of the sealing ring plate (120) is connected to the interior of the exhaust area (131) through the plurality of air guide grooves (122).

4. The soil infrared thermal desorption repair device according to claim 1 is characterized in that: An introduction component (140) is installed on the left side of the tumbling hot soil component (110), and the introduction component (140) includes a transfer shell (141), the inner wall of the transfer shell (141) is rotatably connected to the mouth of the celestial bead-shaped hot cylinder (111) through a bearing, and the transfer shell (141) is fixedly connected to the workbench (200), and a discharge groove (142) is opened at the bottom of the transfer shell (141), and a partition (143) is inserted into the inner wall of the middle part of the discharge groove (142). ) is fixedly installed on the left side of the air intake pipe (144), the left side pipe opening of the air intake pipe (144) is externally connected to a fan, a valve housing (145) is fixedly installed on the top pipe opening of the air intake pipe (144), the inner wall of the valve housing (145) is rotatably connected to a material turning roller (146), a motor (147) is fixedly installed on the outer wall of the valve housing (145), the output shaft of the motor (147) is fixedly connected to the end wall of the material turning roller (146), and a feed pipe (148) is fixedly installed on the top valve opening of the valve housing (145).

5. The soil infrared thermal desorption repair device according to claim 1 is characterized in that: A top shaft (150) is fixedly mounted on the end wall of the bead-shaped heat cylinder (111), and the other end of the top shaft (150) is rotatably connected to the side wall of the workbench (200). The outer wall of the top shaft (150) is rotatably connected to a support ring (151) via a bearing, and an exhaust pipe (153) is fixedly mounted on the outer wall of the support ring (151). The inner wall of the support ring (151) is provided with a plurality of through grooves (152), and the exhaust zone (131) is connected to the exhaust pipe (153) via the through grooves (152). A bearing is mounted on the inner wall of the end of the outer cylinder shell (130), and the inner wall of the end of the outer cylinder shell (130) is rotatably connected to the outer wall of the support ring (151) via a bearing. The top shaft (150) seals and passes through the side wall of the exhaust pipe (153), and a preheating pipe (154) is fixedly mounted on the top of the exhaust pipe (153).

6. The soil infrared thermal desorption repair device according to claim 5 is characterized in that: A silo (240) is fixedly mounted on the top of the workbench (200), a feed port (241) is opened on the top of the silo (240), the top port of the feed pipe (148) is connected to the inside of the silo (240), the preheating pipe (154) is sealed and penetrates the silo (240), and can preheat the material inside the silo (240), and an infrared heating device (230) is fixedly mounted on the outer wall of the outer cylinder shell (130).

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