Thermal desorption device for polluted soil
By setting up cleaning structures and rolling structures in the thermal desorption device of the contaminated soil, the problem of soil wet adhesion is solved, and more efficient soil treatment and heating effects are achieved.
Patent Information
- Application Number
- CN202421939137.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-08-12
AI Technical Summary
During the thermal desorption process of contaminated soil, the soil enters the rotating kiln to produce water vapor, which leads to moisture, is highly sticky, and is prone to stick to the inner wall of the kiln, affecting the treatment effect.
A thermal desorption device for contaminated soil is designed, including a cleaning structure, which cleans the inner wall of the drum through a scraper and a scraper, and treats the soil in combination with the rolling structure to ensure heating uniformity and cleaning efficiency.
Effectively prevent moist soil from adhering to the inner wall of the rotating kiln, improve the treatment effect and heating efficiency, and ensure convenient cleaning operation.
Smart Images
Figure CN223250211U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of contaminated soil thermal desorption devices, in particular to a contaminated soil thermal desorption device. Background Art
[0002] In recent years, a large number of chemical or petrochemical enterprises have not been properly managed, resulting in a large amount of toxic and hazardous substances entering the soil in and around the factory area, causing serious soil pollution problems on site. Most of the organic contaminated soils that are repaired ex situ are repaired using thermal desorption equipment. Thermal desorption is the process of heating the contaminated soil to a sufficient temperature through direct or indirect heating to volatilize or separate the organic pollutants it contains.
[0003] When using the current contaminated soil thermal desorption device, staff often find that when the soil enters the rotary kiln for heating, water vapor is generated. The water vapor makes the soil moist and sticky. Therefore, during the rotation of the rotary kiln, the moist soil is easy to adhere to the inner wall of the rotary kiln. If it is not cleaned in time, it will easily lead to reduced treatment effect. Utility Model Content
[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a contaminated soil thermal desorption device.
[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: A contaminated soil thermal desorption device includes a base plate, two mounting plates are detachably connected to the base plate, one of the mounting plates is detachably connected to a first fixed cylinder, and the other mounting plate is detachably connected to a second fixed cylinder, the first fixed cylinder and the second fixed cylinder are rotatably connected to a rotating cylinder, a heating component is provided in the rotating cylinder, two support blocks are fixedly connected to the base plate, the support blocks are rotatably connected to the rotating cylinder, a first gear is fixedly connected to the rotating cylinder, a second gear is meshed with the first gear, a first motor is fixedly connected to the base plate, the output shaft of the first motor is fixedly connected to the second gear, a second motor is fixedly connected to one of the mounting plates, an auger is fixedly connected to the output shaft of the second motor, an upper hopper is fixedly connected to the first fixed cylinder, and an air outlet pipe is fixedly connected to the second fixed cylinder, a cleaning structure is provided on the mounting plate, the cleaning structure mainly consists of a rotating shaft, the two ends of the rotating shaft are respectively detachably connected to the two mounting plates, two sliding rods are provided on the rotating shaft, the two sliding rods are fixedly connected to a connecting block, and a scraper is fixedly connected to the connecting block.
[0006] The effects achieved by the above components are as follows: the contaminated soil is put into the upper hopper and then enters the first fixed cylinder, and the second motor is started. The output shaft of the second motor drives the auger to rotate, and then drives the soil to move toward the second fixed cylinder, and the heating component on the rotating drum is started to heat the soil. The first motor is started, and the output shaft of the first motor drives the second gear to rotate, and then drives the first gear to rotate, and further drives the rotating drum to rotate, so that the soil is heated more evenly, and the toxic gas generated by heating is discharged through the exhaust pipe for the next step of treatment. During the rotation of the rotating drum, the scraper scrapes along the inner wall of the rotating drum to clean up the soil adhering to the inner wall of the rotating drum, thereby avoiding the generation of water vapor when the soil enters the rotary kiln for heating. The water vapor makes the soil moist and sticky. Therefore, during the rotation of the rotary kiln, the moist soil is easy to adhere to the inner wall of the rotary kiln. If it is not cleaned in time, it is easy to reduce the treatment effect.
[0007] Preferably, two fixed blocks are fixedly connected to the rotating shaft, and a sliding groove is provided on the fixed block, and the sliding groove is slidably connected to the sliding rod.
[0008] The effect achieved by the above components is that the two sliding rods can be slid to drive the scraper to approach the inner wall of the drum, thereby achieving a cleaning effect.
[0009] Preferably, a first spring is fixedly connected to the inner wall of the sliding groove, and one end of the first spring is fixedly connected to the sliding rod.
[0010] The effect achieved by the above components is: when the scraper cleans the inner wall of the drum, the first spring is in a contracted state, so the rebound force of the first spring acts on the slide rod, which can make the scraper always fit with the inner wall of the drum, making the operation more convenient.
[0011] Preferably, a plurality of scrapers are fixedly connected to the connecting block.
[0012] The effect achieved by the above components is that the scraper can clean the soil before the scraper blade scrapes, further improving the cleaning effect, and a gap is left between two adjacent scrapers to prevent the scrapers from getting stuck.
[0013] Preferably, two rectangular blocks are fixedly connected to the two sliding rods respectively, and the two rectangular blocks located on the same horizontal plane are rotatably connected to the rotating brushes.
[0014] The effect achieved by the above components is: after cleaning is completed, the second fixed cylinder and a mounting plate can be removed, the output shafts of the two drive motors can be connected to the two rotating brushes respectively, and the drive motors are started to drive the rotating brushes to rotate, so that the rotating brushes clean the gap between the two scrapers to prevent soil from accumulating in the gap between the scrapers.
[0015] Preferably, a rolling structure is provided on the upper hopper, and the rolling structure is mainly composed of a rolling roller. The rolling roller is rotatably connected to the upper hopper, and a third motor is fixedly connected to the upper hopper, and the output shaft of the third motor is fixedly connected to the rolling roller.
[0016] The effect achieved by the above components is: starting the third motor, the output of the third motor drives the rolling roller to rotate, and when the soil enters the upper hopper, the rolling roller can roll the agglomerated soil to improve the subsequent heating efficiency.
[0017] Preferably, two rotating rods are rotatably connected to the inner walls on both sides of the upper hopper, and a baffle is fixedly connected to the rotating rods.
[0018] The effect achieved by the above components is: the soil is poured onto the baffle on the right, and slides down to the rolling roller under the guidance of the baffle on the right, and then the baffle on the right is rotated back and forth, so that the baffle on the right and the rolling roller roll the soil together, thereby improving the rolling efficiency. The baffle on the left can prevent the rolling roller from bringing the soil out of the upper hopper when rolling the soil.
[0019] Preferably, a second spring is sleeved on the rotating rod, one end of the second spring is fixedly connected to the inner wall of the upper hopper, and the other end of the second spring is fixedly connected to the baffle.
[0020] The effect achieved by the above components is: when soil falls on the right baffle, it will squeeze the right baffle to rotate. At this time, the second spring is in a twisted state, and smaller soil falls from the gap between the right baffle and the rolling roller. The agglomerated soil is crushed by the rolling roller, and the rebound force of the second spring acts on the baffle. The rebound force of the second spring and the gravity of the soil drive the right baffle to vibrate back and forth, making operation more convenient.
[0021] Compared with the prior art, the advantages and positive effects of the present invention are that, in the present invention, by setting a cleaning structure, during the rotation of the drum, the scraper scrapes along the inner wall of the drum, and the soil adhered to the inner wall of the drum can be cleaned off, and the two sliding rods can be slid to drive the scraper to approach the inner wall of the drum, thereby improving the cleaning effect. When the scraper cleans the inner wall of the drum, the first spring is in a contracted state, so the rebound force of the first spring acts on the sliding rod, which can make the scraper always fit with the inner wall of the drum, making the operation more convenient, and the scraper can clean the soil before the scraper scrapes, further improving the cleaning effect, and the adjacent A gap is left between the two scrapers to prevent the scrapers from getting stuck. After cleaning, the second fixed cylinder and a mounting plate can be removed, and the output shafts of the two drive motors are connected to the two rotating brushes respectively. The drive motor is started to drive the rotating brush to rotate, so that the rotating brush cleans the gap between the two scrapers to prevent soil from accumulating in the gap between the scrapers, thereby avoiding the generation of water vapor when the soil enters the rotary kiln for heating. The water vapor makes the soil moist and sticky. Therefore, during the rotation of the rotary kiln, the moist soil is easy to adhere to the inner wall of the rotary kiln. If it is not cleaned in time, it is easy to reduce the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a contaminated soil thermal desorption device proposed in the utility model;
[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of a contaminated soil thermal desorption device from another perspective proposed by the utility model;
[0024] Figure 3 This is a partial schematic diagram of the compaction structure of a contaminated soil thermal desorption device proposed in the utility model;
[0025] Figure 4 This utility model proposes a contaminated soil thermal desorption device Figure 2 Enlarged view of part A.
[0026] Legend: 1. Bottom plate; 2. Mounting plate; 3. First fixed cylinder; 4. Second fixed cylinder; 5. Support block; 6. Rotating cylinder; 7. First gear; 8. Cleaning structure; 81. Rotating shaft; 82. Slide rod; 83. Scraper; 84. Fixed block; 85. Sliding groove; 86. First spring; 87. Scraper; 88. Rectangular block; 89. Rotating brush; 9. Rolling structure; 91. Rolling roller; 92. Third motor; 93. Rotating rod; 94. Baffle; 95. Second spring; 10. Second gear; 11. First motor; 12. Second motor; 13. Auger; 14. Upper hopper; 15. Exhaust pipe. DETAILED DESCRIPTION
[0027] Example 1, as Figure 1 and Figure 2 As shown, a contaminated soil thermal desorption device includes a base plate 1, two mounting plates 2 are detachably connected to the base plate 1, a first fixed cylinder 3 is detachably connected to one mounting plate 2, a second fixed cylinder 4 is detachably connected to one mounting plate 2, a rotating cylinder 6 is rotatably connected to the first fixed cylinder 3 and the second fixed cylinder 4, a heating component is provided in the rotating cylinder 6, two support blocks 5 are fixedly connected to the base plate 1, the support blocks 5 are rotatably connected to the rotating cylinder 6, a first gear 7 is fixedly connected to the rotating cylinder 6, a second gear 10 is meshed with the first gear 7, a first motor 11 is fixedly connected to the base plate 1, an output shaft of the first motor 11 is fixedly connected to the second gear 10, a second motor 12 is fixedly connected to one mounting plate 2, an auger 13 is fixedly connected to the output shaft of the second motor 12, an upper hopper 14 is fixedly connected to the first fixed cylinder 3, and an air outlet pipe 15 is fixedly connected to the second fixed cylinder 4.
[0028] Reference Figure 4, a cleaning structure 8 is provided on the mounting plate 2, and the cleaning structure 8 is mainly composed of a rotating shaft 81. The two ends of the rotating shaft 81 are detachably connected to the two mounting plates 2. Two sliding rods 82 are provided on the rotating shaft 81. The two sliding rods 82 are fixedly connected to the connecting block. The connecting block is fixedly connected with a scraper 83. The contaminated soil is put into the upper hopper 14 and then enters the first fixed cylinder 3. The second motor 12 is started. The output shaft of the second motor 12 drives the auger 13 to rotate, thereby driving the soil to move toward the second fixed cylinder 4, starting the heating component on the rotating cylinder 6 to heat the soil, starting the first motor 11, and the output shaft of the first motor 11 drives the second motor 11 to rotate. The second gear 10 rotates, which in turn drives the first gear 7 to rotate, and further drives the drum 6 to rotate, so that the soil is heated more evenly, and the poisonous gas generated by heating is discharged through the exhaust pipe 15 for the next step of treatment. During the rotation of the drum 6, the scraper 83 scrapes along the inner wall of the drum 6 to clean up the soil adhering to the inner wall of the drum 6, thereby avoiding the water vapor generated when the soil enters the rotary kiln for heating. The water vapor makes the soil moist and sticky. Therefore, during the rotation of the rotary kiln, the moist soil is easy to adhere to the inner wall of the rotary kiln. If it is not cleaned in time, it is easy to reduce the treatment effect. There are two fixed The fixed block 84 is provided with a sliding groove 85, which is slidably connected to the slide bar 82, and the two slide bars 82 can be slid to drive the scraper 83 to approach the inner wall of the drum 6, thereby achieving a cleaning effect. A first spring 86 is fixedly connected to the inner wall of the sliding groove 85, and one end of the first spring 86 is fixedly connected to the slide bar 82. When the scraper 83 cleans the inner wall of the drum 6, the first spring 86 is in a contracted state, so the rebound force of the first spring 86 acts on the slide bar 82, which can make the scraper 83 always fit the inner wall of the drum 6, making the operation more convenient. A plurality of scrapers 87 are fixedly connected to the connecting block, and the scraper 87 can be used in the scraping The plate 83 cleans the soil before scraping to further improve the cleaning effect, and a gap is left between the two adjacent scrapers 87 to prevent the scrapers 87 from getting stuck. Two rectangular blocks 88 are fixedly connected to the two slide bars 82 respectively, and the two rectangular blocks 88 located on the same horizontal plane are connected to a rotating brush 89 that rotates together. After cleaning, the second fixed cylinder 4 and a mounting plate 2 can be removed, and the output shafts of the two drive motors can be connected to the two rotating brushes 89 respectively. The drive motor is started to drive the rotating brush 89 to rotate, so that the rotating brush 89 cleans the gap between the two scrapers 87 to prevent soil from accumulating in the gap between the scrapers 87.
[0029] Reference Figure 3, a rolling structure 9 is provided on the upper hopper 14, and the rolling structure 9 is mainly composed of a rolling roller 91, and the rolling roller 91 is rotatably connected to the upper hopper 14, and the upper hopper 14 is fixedly connected to a third motor 92, and the output shaft of the third motor 92 is fixedly connected to the rolling roller 91, and the third motor 92 is started. The output of the third motor 92 drives the rolling roller 91 to rotate, and when the soil enters the upper hopper 14, the rolling roller 91 can roll the agglomerated soil to improve the subsequent heating efficiency. Two rotating rods 93 are connected to the inner walls of both sides of the upper hopper 14 for common rotation, and a baffle 94 is fixedly connected to the rotating rod 93, and the soil is dumped onto the baffle 94 on the right, and slides down to the rolling roller 91 under the guidance of the baffle 94 on the right, and then rotates the baffle 94 on the right back and forth, so that the baffle 94 on the right and the rolling roller 9 1. The soil is rolled together to improve the rolling efficiency. The left baffle 94 can prevent the rolling roller 91 from bringing the soil out of the upper hopper 14 when rolling the soil. A second spring 95 is sleeved on the rotating rod 93. One end of the second spring 95 is fixedly connected to the inner wall of the upper hopper 14, and the other end of the second spring 95 is fixedly connected to the baffle 94. When soil falls on the right baffle 94, it squeezes the right baffle 94 to rotate. At this time, the second spring 95 is in a twisted state, and smaller soil falls from the gap between the right baffle 94 and the rolling roller 91. The agglomerated soil is crushed under the action of the rolling roller 91. The rebound force of the second spring 95 acts on the baffle 94. The rebound force of the second spring 95 and the gravity of the soil drive the right baffle 94 to vibrate back and forth, making operation more convenient.
[0030] Working principle: put the contaminated soil into the upper hopper 14, and then enter the first fixed cylinder 3, start the second motor 12. The output shaft of the second motor 12 drives the auger 13 to rotate, and then drives the soil to move to the second fixed cylinder 4, start the heating component on the rotating drum 6 to heat the soil, start the first motor 11, and the output shaft of the first motor 11 drives the second gear 10 to rotate, and then drives the first gear 7 to rotate, and further drives the rotating drum 6 to rotate, so that the soil is heated more evenly, and the toxic gas generated by heating is discharged through the outlet pipe 15 for the next step of treatment. During the rotation of the rotating drum 6, the scraper 83 scrapes along the inner wall of the rotating drum 6 to clean up the soil adhering to the inner wall of the rotating drum 6, thereby avoiding the soil from being stained. When the soil enters the rotary kiln for heating, water vapor is generated. The water vapor makes the soil moist and sticky. Therefore, during the rotation of the rotary kiln, the moist soil is easy to adhere to the inner wall of the rotary kiln. If it is not cleaned in time, it is easy to reduce the processing effect. The two sliding rods 82 can be slid to drive the scraper 83 to approach the inner wall of the drum 6, thereby improving the cleaning effect. When the scraper 83 cleans the inner wall of the drum 6, the first spring 86 is in a contracted state. Therefore, the rebound force of the first spring 86 acts on the sliding rod 82, which can make the scraper 83 always fit with the inner wall of the drum 6, making the operation more convenient. The scraper 87 can clean the soil before the scraper 83 scrapes, further improving the cleaning effect, and the two adjacent scrapers A gap is left in 87 to prevent the scraper 87 from getting stuck. After cleaning, the second fixed cylinder 4 and a mounting plate 2 can be removed, and the output shafts of the two drive motors are connected to the two rotating brushes 89 respectively. The drive motor is started to drive the rotating brush 89 to rotate, so that the rotating brush 89 cleans the gap between the two scrapers 87 to prevent soil from accumulating in the gap between the scrapers 87. The third motor 92 is started, and the output of the third motor 92 drives the rolling roller 91 to rotate. When the soil enters the upper hopper 14, the rolling roller 91 can roll the agglomerated soil to improve the subsequent heating efficiency, and the soil is dumped onto the baffle 94 on the right and slides down to the rolling roller 91 under the guidance of the baffle 94 on the right. The right baffle 94 is rotated back and forth, so that the right baffle 94 and the rolling roller 91 roll the soil together to improve the rolling efficiency. The left baffle 94 can prevent the rolling roller 91 from bringing the soil out of the upper hopper 14 when rolling the soil. When the soil falls on the right baffle 94, it will squeeze the right baffle 94 to rotate. At this time, the second spring 95 is in a twisted state, and smaller soil falls from the gap between the right baffle 94 and the rolling roller 91. The agglomerated soil is crushed by the rolling roller 91, and the rebound force of the second spring 95 acts on the baffle 94. The rebound force of the second spring 95 and the soil gravity drive the right baffle 94 to vibrate back and forth, making operation more convenient.
[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment based on the technical essence of the present invention that does not deviate from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
Claims
1. A contaminated soil thermal desorption device, comprising a bottom plate (1), characterized in that: The bottom plate (1) is detachably connected to two mounting plates (2), one mounting plate (2) is detachably connected to a first fixed cylinder (3), and the other mounting plate (2) is detachably connected to a second fixed cylinder (4). The first fixed cylinder (3) and the second fixed cylinder (4) are rotatably connected to a rotating cylinder (6), and a heating component is provided in the rotating cylinder (6). The bottom plate (1) is fixedly connected to two supporting blocks (5), and the supporting blocks (5) are rotatably connected to the rotating cylinder (6). The rotating cylinder (6) is fixedly connected to a first gear (7), and the first gear (7) is meshed with a second gear (10). The bottom plate (1) is fixedly connected to a first motor (11), and the output of the first motor (11) is The shaft is fixedly connected to the second gear (10), a second motor (12) is fixedly connected to one of the mounting plates (2), an auger (13) is fixedly connected to the output shaft of the second motor (12), an upper hopper (14) is fixedly connected to the first fixed cylinder (3), an air outlet pipe (15) is fixedly connected to the second fixed cylinder (4), a cleaning structure (8) is provided on the mounting plate (2), the cleaning structure (8) mainly consists of a rotating shaft (81), both ends of the rotating shaft (81) are detachably connected to the two mounting plates (2), two sliding rods (82) are provided on the rotating shaft (81), the two sliding rods (82) are fixedly connected to a connecting block, and a scraper (83) is fixedly connected to the connecting block.
2. The contaminated soil thermal desorption device according to claim 1, characterized in that: Two fixed blocks (84) are fixedly connected to the rotating shaft (81), and a sliding groove (85) is provided on the fixed block (84). The sliding groove (85) is slidably connected to the sliding rod (82).
3. The contaminated soil thermal desorption device according to claim 2, characterized in that: A first spring (86) is fixedly connected to the inner wall of the sliding groove (85), and one end of the first spring (86) is fixedly connected to the sliding rod (82).
4. The contaminated soil thermal desorption device according to claim 3, characterized in that: A plurality of scrapers (87) are fixedly connected to the connecting block.
5. The contaminated soil thermal desorption device according to claim 4, characterized in that: Two rectangular blocks (88) are fixedly connected to the two slide bars (82) respectively, and a rotating brush (89) is rotatably connected to the two rectangular blocks (88) located on the same horizontal plane.
6. The contaminated soil thermal desorption device according to claim 5, characterized in that: The upper hopper (14) is provided with a rolling structure (9), and the rolling structure (9) is mainly composed of a rolling roller (91). The rolling roller (91) is rotatably connected to the upper hopper (14), and a third motor (92) is fixedly connected to the upper hopper (14), and the output shaft of the third motor (92) is fixedly connected to the rolling roller (91).
7. The contaminated soil thermal desorption device according to claim 6, characterized in that: Two rotating rods (93) are rotatably connected to the inner walls of both sides of the upper hopper (14), and a baffle (94) is fixedly connected to the rotating rods (93).
8. The contaminated soil thermal desorption device according to claim 7, characterized in that: A second spring (95) is sleeved on the rotating rod (93), one end of the second spring (95) is fixedly connected to the inner wall of the upper hopper (14), and the other end of the second spring (95) is fixedly connected to the baffle (94).