Device for thermal consolidation of waste mud

Abstract

The application discloses a kind of waste muds's thermal consolidation processing device, including detachable upper box, lower box, loading system, heating system, monitoring system, drainage system, automatic control device are equipped in box;Loading system includes the settlement plate for being arranged at the top of box and being movable up and down, power device for applying vertical load to settlement plate, screwing device for being arranged in lower box and being used to apply circumferential load to mud;Drainage system includes hollow transmission rod, and suction device is connected between screwing blade and lower box wall surface;Monitoring system includes displacement monitoring device, several pore pressure temperature integrated sensors;Automatic control device is used to control the operation of loading system and heating system according to pore pressure temperature integrated sensor value change.The application can realize integrated automatic efficient thermal consolidation, effectively improve consolidation efficiency and data accuracy and stability in consolidation process, achieve the purpose of stable and efficient consolidation treatment of waste mud.

Description

Technical Field

[0001] This invention relates to a mud treatment apparatus, and more particularly to a thermal solidification treatment apparatus for waste mud. Background Technology

[0002] Thermal consolidation, based on drainage consolidation, adds a heat source inside or outside the soil to accelerate water outflow and improve consolidation efficiency. The consolidation efficiency, effect, and changes in soil mechanical properties under temperature are key factors for its widespread adoption. Due to the complexity of the mechanism of thermal consolidation and the intricacies of on-site construction conditions, field tests have yielded less than ideal results, hindering the widespread adoption of this method.

[0003] Therefore, when investigating the influence of thermal consolidation on soil consolidation, small-scale, low-cost, and highly controllable model tests are generally adopted. However, the model tests used in the current literature all use ballast to pressurize the soil, requiring external devices such as reaction frames, making it difficult to guarantee the safety and stability of the test. At the same time, all model tanks use the same inlet and outlet, making it extremely difficult to remove the hardened soil from the tank after consolidation, affecting the progress of the test. In addition, all model tanks only consider loading the top of the soil, without considering adding lateral pressure loading, resulting in low soil consolidation efficiency. Furthermore, most of the soil drainage channels are paved with sand and gravel, which are very easy to be damaged during the test due to uneven soil settlement, causing drainage obstruction. Moreover, once the sand and gravel drainage channels are blocked, the test can only be restarted and the drainage channels can be re-laid, making it difficult to guarantee the stability of the test.

[0004] In traditional thermal consolidation treatment devices, patent CN2021111271223 discloses a vertical shaft foundation thermal drainage consolidation test device. This device includes a test chamber, a pressurization mechanism, a drainage mechanism, and a heating mechanism. It uses a pneumatic control unit as the power source for the pressurization mechanism, sets up a vertical shaft as the drainage mechanism, and sets a heating coil between the two layers of the vertical shaft as the heat source. This invention has a compact structure and complete functions, and can effectively reduce the moisture content of the consolidated soil to achieve the purpose of soil consolidation. However, the existing chambers all have the inlet and outlet set at the same point, and do not consider the problem that the soil hardens after consolidation and is extremely difficult to remove from the chamber. This makes the cleaning work after the test and the test under new working conditions difficult, as well as the transportation cumbersome. At the same time, it is impossible to adjust the loading pressure in time according to the pore pressure of the consolidated soil, and the influence of temperature drift and possible water seepage from the chamber is not considered, thus affecting the accuracy of the test. Summary of the Invention

[0005] Purpose of the invention: The purpose of this invention is to provide a thermal consolidation treatment device for waste mud that can improve consolidation efficiency, stability during the consolidation process, and data accuracy.

[0006] Technical Solution: The waste mud thermal solidification treatment device of the present invention includes a box body, which has a mud inlet and a mud solidification outlet. The box body includes a detachable upper box body and a lower box body. The box body is equipped with a loading system, a heating system, a monitoring system, a drainage system, and an automatic control device. The loading system includes a settling plate that can move up and down on the top of the upper box body, a power device for applying a vertical load to the settling plate, and a tightening device for applying a circumferential load to the mud in the lower box body. The tightening device includes a plurality of tightening blades that are sequentially overlapped along the circumferential side of the inner wall of the lower box body and can be tightened. The settling plate and the tightening blades are connected by a mechanism that can push the blades to tighten as the settling plate descends, thereby applying a vertical load to the mud. A hollow drive rod applies circumferential pressure to the mud; the drainage system includes the hollow drive rod, the wall of which has a perforated structure for the liquid generated after mud compression to enter; a suction device is connected between the tightening blade and the lower box wall, which can pump air as the tightening blade rotates; the bottom of the hollow drive rod is connected to the inside of the suction device to discharge the liquid inside the hollow drive rod; the heating system is fixed to the bottom of the settling plate; the monitoring system includes a displacement monitoring device for monitoring the downward displacement of the settling plate and several integrated pore pressure and temperature sensors for detecting the pore pressure and temperature of the mud; the automatic control device controls the operation of the loading system and the heating system based on the changes in the values ​​of the integrated pore pressure and temperature sensors.

[0007] The power unit includes a tensioning mechanism housed within the housing, a movable pulley located below the settling plate, and a chain extending from the tensioning mechanism and wound around the movable pulley. One end of the chain is fixed to the tensioning mechanism, and the other end is wound into the tensioning mechanism to drive the movable pulley downwards. The movable pulley has a ring of ball bearings inside, and a first folding rod is fixed between the center of the ball bearings and the settling plate, allowing it to descend with the movable pulley and apply pressure to the settling plate. A movable pulley track is provided between the settling plate and the lower housing for vertical movement of the movable pulley. The displacement detection device includes teeth on the chain, and the displacement monitoring device determines the displacement of the settling plate by counting the number of chain teeth wound into the tensioning mechanism.

[0008] Traditional thermal consolidation methods typically apply ballast at the top and use jacks to apply load in the middle. This can easily cause the settlement plate to tilt during descent, leading to uneven load application. To solve this problem, this invention incorporates movable pulleys and sliding tracks around the perimeter of the settlement plate to ensure it remains horizontal during descent, resulting in more even stress distribution on the soil. The ballast device has been removed and replaced with high-strength thin steel cables. The four movable pulleys reduce the required load to 1 / 8, or achieve higher pressure when the same force is applied to the soil. Furthermore, these sliding tracks also serve as drainage channels, improving drainage efficiency.

[0009] The suction device includes an air extraction cylinder whose top is connected to the bottom of the hollow transmission rod and fixed to the tightening blade; a retractable pull rod with one end fixed to the inner wall of the lower housing and the other end extending into the opening of the air extraction cylinder; a retractable rubber plug is fixed to the end of the retractable pull rod inside the air extraction cylinder; multiple pairs of matching locking slots are vertically arranged on the surface of the retractable pull rod; a pipe communicating with the outside is fitted around the retractable pull rod; the air extraction cylinder moves away from the retractable pull rod as the tightening blade is tightened; when the retractable rubber plug reaches the opening of the air extraction cylinder, the retractable pull rod extends, causing the retractable rubber plug to return to the top of the air extraction cylinder, thereby causing the retractable pull rod to perform piston motion inside the air extraction cylinder, discharging liquid from the hollow transmission rod.

[0010] The retractable rod contains a spring, the top of which is connected to a retractable rubber stopper. The top of the retractable rubber stopper has a first pressing block, and two second pressing blocks are located on opposite sides. A second folding rod connects the first and second pressing blocks, with a fixed pulley at the folding point of the second folding rod allowing both ends of the second folding rod to rotate around the pulley, thus allowing one of the first and second pressing blocks to extend while the other retracts. The bottom of the first pressing block is connected to a vertical rod extending into the rubber stopper, and the second pressing block is connected to a horizontal rod extending into the rubber stopper. Two locking blocks are located on opposite sides of the retractable rubber stopper and can be engaged with the retractable rod. One end of a vertical connecting rod connects to the horizontal rod, and the other end connects to the locking block and the module, allowing the horizontal rod to move, via the connecting rod, the module or locking block to move. The bottom of the vertical rod has an insertion end that can be inserted between two modules.

[0011] When the first pressing block hits the top of the vacuum cylinder, it retracts and drives the vertical rod to move down. The insertion end of the vertical rod is inserted between the two modules, causing the locking block to extend and lock onto the corresponding slot on the telescopic rod, thus fixing the spring inside the telescopic rod and fixing the length of the telescopic rod.

[0012] When the first pressing block retracts, the second pressing block pops out simultaneously. When the second pressing block moves to the opening of the suction cylinder, it is restricted and retracts, causing the first pressing block to pop out. Then the vertical rod moves upward, bringing the two modules closer together. The horizontal rod retracts accordingly, and the locking block retracts. This causes the spring inside the telescopic rod to be released, and the telescopic rod to extend, allowing the retractable rubber plug to return to the top of the suction cylinder.

[0013] The outer wall of the tightening blade is provided with a transmission rod groove. The bottom of the hollow transmission rod extends into the transmission rod groove and can move from one side to the other side in the transmission rod groove as the settling plate descends, thereby pushing the tightening blade to tighten.

[0014] The bottom of the housing is provided with a blade slide below the tightening blade, which allows the tightening blade to slide during the tightening process. The blade slide has a fixed end and a movable end. The fixed end is fixed to the bottom of the housing, and the movable end is connected to the bottom of the housing by a spring. When the tightening blade is tightened, the movable end can rotate around the fixed end.

[0015] During the tightening process of the tightening device, the structure of the suction device of the present invention is pulled, similar to an air pump, to produce an external suction effect. The petal-shaped rubber plug inside will close into a flower bud shape when passing through the round hole. Then the mechanical device will push the flower bud-shaped rubber plug back to its original position, realizing the continuous suction operation during the tightening process. This suction process replaces the function of a vacuum pump, accelerating the discharge of water from the transmission rod, slide and other drainage channels in the device. The petal-shaped rubber plug can open and close. It needs to open when pulled out to produce a suction effect, and it loses the vacuum effect after closing to facilitate returning to its original position and preparing for the next suction.

[0016] The heating system includes a cylindrical shell with openings at both ends and its top connected to the bottom of the settling plate, and a waterproof heater located inside the cylindrical shell that can freely expand and contract with the up and down movement of the settling plate.

[0017] The cylindrical outer shell is filled with vertically arranged gravel, the top and bottom of the mud between the settling plate and the lower box are filled with horizontally arranged gravel, and the drainage system also includes a drainage channel formed by connecting the horizontally arranged gravel and the vertically arranged gravel.

[0018] The lower box is provided with an elastic base at its bottom, and the discharge port is openable and closable on the elastic base.

[0019] The box of this invention includes an upper box and a lower box that are connected vertically. This invention localizes the box structure, allowing the large box to be disassembled and transported during transport, solving the problem of difficult transport of large boxes. The two box parts are reinforced with fasteners, and a silicone waterproof strip is used to ensure that the box maintains its strength and prevents water leakage during the consolidation test. Furthermore, the existing box base structure is replaced with an elastic base design in the middle to prevent damage from impacts during transport. Simultaneously, the elastic potential energy is stored using the self-weight of the consolidated soil in the early stages. After the soil is removed, the elastic base can use the stored elastic potential energy to restore the tightening device to its original state, preparing for the next consolidation test.

[0020] The external casing is equipped with a heating plate for heating the mud, which is connected to a solar panel to provide electrical energy. Traditional thermal consolidation experiments typically use heat pipes or hot water for heating, and an external insulation layer to maintain the casing temperature. This invention uses an external heating plate connected to a solar panel, installed sequentially on the outside of the casing. The solar panel not only insulates the interior of the casing but also converts solar energy into electrical energy to power other components within the device (such as pulleys and automatic control devices). Simultaneously, the external heating plate, along with sunlight, works in conjunction with the heat pipes to achieve simultaneous internal and external heating, resulting in more uniform and rapid temperature rise.

[0021] Invention Principle: This invention modifies the traditional consolidation model into a two-part box. To simulate the twisting effect, the lower box is shaped like a frustum and consists of multiple movable blades. While pressure is applied above the box, as the loading plate descends, a transmission rod drives the lower part of the box to rotate and tighten. This applies both upper and lateral pressure to the soil, accelerating the consolidation process. When the settlement plate descends, the transmission rod moves diagonally downwards to one end of the chute, causing the connected tightening blades to move to the right. When each tightening blade, thicker on the left and thinner on the right, moves to the right simultaneously, it achieves a tightening effect, applying lateral pressure to the soil. This changes the traditional uniaxial loading mode of the box to a triaxial loading mode, improving consolidation efficiency.

[0022] In current thermal consolidation model tanks, conventional drainage channels are prone to clogging, hindering effective reduction of moisture content. The arrangement of these channels is also relatively complex. Furthermore, during loading, uneven soil settlement can cause sand and gravel to mix with the consolidated soil within the channels, leading to clogging and failure. Once a drainage channel fails, the experiment must be repeated, and the loss cannot be compensated. To address this issue, this invention uses a transmission rod and a sliding track to replace the traditional drainage channel. The sliding track and transmission rod are covered with a semi-permeable membrane, and an internal, vertically movable, dense mesh structure is installed, similar to the blockage-clearing mechanism in human blood vessels. When the drainage channel is clogged with silt, this dense mesh structure can remove the silt, preventing clogging during the experiment. This method not only avoids the cumbersome arrangement of drainage channels but also allows for convenient silt removal or channel replacement when needed, thereby improving experimental stability.

[0023] Beneficial effects: Compared with the prior art, the present invention achieves the following significant effects: (1) The present invention improves the traditional single consolidation model into two boxes with the upper and lower parts connected. The tightening device simulates the twisting effect, thereby improving the consolidation efficiency and accelerating the consolidation process in the experiment. In addition, the suction device creates an external suction effect during the tightening process of the tightening device, which accelerates the discharge of liquid in the soil and further improves the experimental efficiency and accuracy. The transmission rod not only plays a transmission role but also replaces the traditional drainage channel for drainage, effectively avoiding the problem of drainage channel blockage and improving the stability and continuity of the experiment. (2) The present invention sets a moving pulley and a slide under the settlement plate, which effectively ensures that the soil is subjected to uniform force and further improves the efficiency and reliability of the consolidation test. (3) The traditional feeding and discharging method is changed. The feeding port is set from the top and the discharging port is set below the tightening device. After the consolidation is completed, the soil can be squeezed out of the box by tightening the tightening device, so that the consolidated soil can be moved out of the box more easily and maintain a good degree of consolidation when it is moved out of the box, making it easier and faster to replace the soil in the consolidation test. (4) The box body is divided into upper and lower boxes, which facilitates transportation and operation, while ensuring strength and waterproofness, effectively improving the convenience and reliability of the test. (5) The solar panel is connected to the external heating plate to realize simultaneous internal and external heating, which significantly improves the uniformity and speed of heating, optimizes the experimental conditions, and enhances the comparability and accuracy of the experimental results. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the thermal solidification treatment device for waste mud according to the present invention;

[0025] Figure 2 This is a schematic diagram of the hollow transmission rod and suction device of the present invention;

[0026] Figure 3This is an enlarged schematic diagram of the screw-on blade structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the sliding groove structure on the tightening blade of the present invention;

[0028] Figure 5 This is a top view of the tightening device of the present invention;

[0029] Figure 6 This is a schematic diagram of the suction device of the present invention;

[0030] Figure 7 This is an enlarged schematic diagram of the retractable pull rod structure in the suction device of the present invention;

[0031] Figure 8 This is an enlarged schematic diagram of the telescopic rod head structure in the suction device of the present invention;

[0032] Figure 9 This is a three-dimensional structural diagram of the tightening device of the present invention before and after tightening;

[0033] Figure 10 This is a schematic diagram of the power unit structure of the present invention;

[0034] Figure 11 This is a schematic diagram of the settlement plate of the present invention;

[0035] Figure 12 This is a schematic diagram of the structure of the elastic base of the present invention. Detailed Implementation

[0036] The present invention will now be described in further detail.

[0037] like Figure 1-12As shown, this invention provides a thermal solidification treatment device for waste mud, including a box body, which includes an upper box body 1 and a lower box body 2 connected vertically; the upper box body 1 has a mud inlet at the top, and the lower box body 2 has a mud solidification outlet at the bottom. The box body contains a loading system, a heating system, a monitoring system, a drainage system, and an automatic control device; the loading system includes a settling plate 11 that can move vertically at the top of the box body, a power device 3 for applying a vertical load to the settling plate 11, and a tightening device 4 for applying a circumferential load to the mud at the bottom of the box body; the tightening device 4 includes several tightening blades 10 that are sequentially overlapped along the circumferential direction of the inner wall of the lower box body and can be tightened; a hollow transmission rod 12 is connected between the settling plate 11 and the tightening blades 10, which can push the blades 10 to tighten as the settling plate 11 descends, thereby applying circumferential pressure to the mud; the drainage system includes the hollow transmission rod 12, the wall surface of the hollow transmission rod 12... The system includes a perforated structure for the liquid generated after mud compression to enter. A suction device 14 is connected between the tightening blade 10 and the lower wall of the box, which can pump air as the tightening blade 10 rotates. The bottom of the hollow transmission rod 12 is connected to the inside of the suction device 14 to discharge the liquid inside the hollow transmission rod 12. The heating system is fixed to the bottom of the settling plate 11. The monitoring system includes a displacement monitoring device for monitoring the downward displacement of the settling plate 11 and several integrated pore pressure and temperature sensors for detecting the pore pressure and temperature of the mud. An automatic control device is used to automatically respond or manually correct according to the changes in the values ​​of the integrated pore pressure and temperature sensors to control the operation of the loading system and the heating system.

[0038] In the tightening device 4 of the present invention, a transmission rod groove 13 is embedded on the outer side of the tightening blade 10. A transmission rod slide 30 is provided in the transmission rod groove 13. Anti-detachment strips 29 are provided on both sides of the transmission rod slide 30 to prevent the hollow transmission rod 12 from accidentally detaching from the connection between it and the suction device 14. The bottom of the hollow transmission rod 12 extends into the transmission rod slide 30 in the transmission rod groove 13. As the settlement plate 11 descends, the hollow transmission rod 12 moves downward accordingly. When the lower end of the hollow transmission rod 12 moves from the left end to the right end of the transmission rod groove 13, the continued movement of the hollow transmission rod 12 will drive the tightening blade 10 to tighten and perform work, giving the soil corresponding lateral pressure.

[0039] The bottom of the housing, below the tightening blade 10, has a blade groove 31 for the tightening blade 10 to slide during tightening. A blade slide channel 32 is provided within the blade groove 31. The blade groove 31 has a fixed end and a movable end. The fixed end is fixed to the bottom of the housing, and the movable end is connected to the bottom of the housing via a spring 34. When the tightening blade 10 is tightened, the movable end can rotate around the fixed end. In this embodiment, the right side of the blade groove 31 is fixed to the lower bottom of the housing by a stud 33, while the left side of the blade groove 31 is connected to the outer boundary of the discharge port via a spring 34. The left side of the blade groove 31 can rotate around the stud 33, so that when the tightening blade 10 moves to the right, the blade groove 31 rotates inward simultaneously while tightening. A roller 35 is provided at the bottom of the tightening blade 10, which can move within the blade slide channel 32.

[0040] The suction device 14 of this embodiment includes a suction cylinder 17 whose top is connected to the bottom of the hollow transmission rod 12 and fixed to the tightening blade 10, and a telescopic rod 26 whose one end is fixed to the inner wall of the lower box and whose other end extends into the opening end of the suction cylinder 17, with the opening end being a round hole 25; a retractable rubber plug is fixed to the end of the telescopic rod 26 located inside the suction cylinder 17; multiple pairs of matching buckles are vertically arranged on the surface of the telescopic rod 26; a pipe communicating with the outside is sleeved on the outside of the telescopic rod 26, and a drain valve 27 is provided at the connection between the pipe and the box, with a filter screen in the drain valve 27; the suction cylinder 17 moves away from the telescopic rod 26 as the tightening blade 10 tightens, and when the retractable rubber plug reaches the opening of the suction cylinder 17, the telescopic rod 26 extends to reset the retractable rubber plug back to the top of the suction cylinder 17, thereby causing the telescopic rod 26 to perform piston movement inside the suction cylinder 17 to discharge liquid from the hollow transmission rod 12. It is worth noting that the bottom of the hollow transmission rod 12 and the top opening 23 of the suction cylinder 17 are connected, allowing liquid to directly enter the suction cylinder 17. However, the hollow transmission rod 12 moves within the groove on the tightening blade 10 without communicating with it, so the liquid does not flow out onto the tightening blade 10. In this embodiment, the retractable rubber stopper is a petal-shaped stopper, comprising a body and a petal-shaped elastomer disposed on the body. During the tightening process, the tightening device 4 pulls the petal-shaped stopper outwards. When the stopper passes through the round hole 25, it closes into a bud-shaped stopper. When the stopper is pushed back further, the next suction is performed. This allows the suction device 14 to repeatedly suction water from the drainage channel during the gradual tightening process of the tightening device 4, accelerating drainage. A filter screen is installed at the connection between the suction device 14 and the housing to effectively prevent the loss of soil particles when discharging muddy water.

[0041] The retractable rod 26 contains a spring 43, the top of which is connected to a retractable rubber plug 24. The top of the retractable rubber plug 24 has a first pressing block 44, and two second pressing blocks 45 are located on opposite sides. A second folding rod 46 connects the first pressing block 44 and the second pressing block 45. A pulley is located at the folding point of the second folding rod 46, allowing both ends of the second folding rod 46 to rotate around a fixed pulley 47, thus allowing one of the first pressing block 44 and the second pressing block 45 to extend while the other retracts. The bottom of the first pressing block 44 is connected to a vertical rod 48 extending vertically into the rubber plug, and the second pressing block 45 is connected to a horizontal rod 49 extending laterally into the retractable rubber plug 24. Two locking blocks 50 are located on opposite sides of the retractable rubber plug 24, which can be locked onto the retractable rod 26. One end of a vertical connecting rod 54 is connected to the horizontal rod 49, and the other end is connected to the locking block 50 and the module 53. Between them, the horizontal bar 49 is moved by the connecting rod 54, which drives the module or the locking block 50 to move; the bottom of the vertical bar 48 is provided with an insertion end that can be inserted between two modules 53; when the first pressing block hits the top of the suction cylinder 17, it retracts and drives the vertical bar to move down, and the insertion end of the vertical bar is inserted between the two modules 53, so that the locking block 50 extends and is locked in the corresponding slot of the telescopic pull rod 26, so that the spring 43 inside the telescopic pull rod 26 is fixed, thus fixing the length of the telescopic pull rod 26; when the first pressing block retracts, the second pressing block 45 pops out at the same time; when the second pressing block 45 moves to the opening of the suction cylinder 17, it is restricted and retracts, while the first pressing block 44 pops out, then the vertical bar 48 moves up, so that the two modules 53 are close together, the horizontal bar 49 retracts accordingly, the locking block 50 retracts, so that the spring 43 inside the telescopic pull rod 26 is released, the telescopic pull rod 26 extends, and the retractable rubber plug 24 returns to the top of the suction cylinder 17.

[0042] The power unit 3 of the present invention includes a tensioning device 37 disposed within the housing, a movable pulley 7 located below the settling plate 11, and a chain 8 led out from the tensioning device 37 and wound around the movable pulley 7. One end of the chain 8 is fixed to the tensioning device 37, and the other end is wound into the tensioning device 37, thereby driving the movable pulley 7 to descend. Specifically, the tensioning device 37 simultaneously winds in or releases the movable pulley chain 8 through two chain holes 36, causing the movable pulley chain 8 to undergo significant expansion and contraction. The top of the movable pulley chain 8 is the movable pulley 7. The inner ring of the movable pulley 7 is provided with a ring of ball bearings 41. A first folding rod 38 is fixed between the center of the ring of ball bearings 41 and the settling plate 11, which can apply pressure to the settling plate 11 as the movable pulley 7 descends. The first folding rod 38 is connected to an alloy sheet 40, and the alloy sheet 40 is connected to the bottom of the settling plate 11 by bolts 40. The movable pulley chain 8 and the bending rod 38 are both made of high-strength alloy, capable of withstanding extremely high tensile forces. When the pulling mechanism 37 shortens the movable pulley chain 8, it causes the movable pulley 7 to descend. The descent of the movable pulley 7, through the first bending rod 38 and the alloy plate 40, causes the settlement plate 11 to shift downwards. Specifically, in this embodiment, movable pulleys 7 are installed at the four corners of the settlement plate 11, and movable pulley tracks are installed vertically between the settlement plate 11 and the lower housing. The movable pulleys are confined within these tracks to ensure that the settlement plate 11 remains horizontal during descent, resulting in more uniform soil stress. The pulling mechanism 37 is equipped with a 2.4G wireless remote control chip, and the loading tension is wirelessly controlled by an automatic control device. The automatic control device controls the tension of the chain on the pulling mechanism 37, thereby controlling the loading tension. The chain 8 is equipped with teeth, which allows the displacement monitoring device to determine the displacement of the settling plate by the number of chain teeth that the tension motor retracts into the device.

[0043] The heating system of this invention includes a cylindrical outer shell 5 with openings at both ends and its top connected to the bottom of a settlement plate 11, and a waterproof heater 6 disposed inside the cylindrical outer shell 5 that can freely extend and retract with the up-and-down movement of the settlement plate 11. In this embodiment, the waterproof heater 6 is a silicone heater made of silicone. The lower part of the settlement plate 11 is connected to the silicone heater, and the exterior of the silicone heater is made of waterproof silicone material, ensuring that water cannot enter and cause danger when the device effectively transfers heat to the surrounding soil. Furthermore, the silicone heater has a telescopic spring inside, which can freely extend and retract with the up-and-down movement of the settlement plate 11. When the settlement plate 11 is compressed downwards, the length of the silicone heater 6 can also retract accordingly. The silicone heater 6 is located inside the cylindrical outer shell 5 and is not compressed by the soil. A 2.4G wireless remote control chip is installed inside the silicone heater 6, which is wirelessly controlled by an automatic control device.

[0044] The outer casing is equipped with a heating plate that covers the casing to externally heat the mud. A solar panel covers the outer heating plate to convert solar energy into electrical energy to power the device. The outer heating plate 3 covers the outside of the casing, heating it from the outside. Together with the internal waterproof heater 6, this ensures more even heating of the soil and also uses solar energy to power other devices within the casing. The outer heating plate contains a 2.4G wireless remote control chip, which is wirelessly controlled by an automatic control device.

[0045] The displacement monitoring device of this invention includes teeth on a chain. The device determines the displacement of the settlement plate 11 by counting the number of teeth on the chain 8 retracted into the device via a tension-driven mechanism 37, thereby calculating the descent depth of the consolidated soil. Multiple integrated pore pressure and temperature sensors 16 are evenly distributed in the middle of the housing 1. The measured data is uploaded to a cloud platform in real time via 4G signal to measure the pore pressure and temperature of the soil at different locations within the housing, thereby analyzing and controlling the experimental process and results.

[0046] An automatic control device 19 is fixed above the settlement plate 11 to regulate the entire device, thereby changing the loading pressure during staged loading. The automatic control device 19 controls the pore pressure and temperature integrated sensor 16, the loading system, and the heating system via a 2.4G wireless remote control chip. Based on real-time data uploaded to the cloud platform by the pore pressure and temperature integrated sensor 16, and according to manually set thresholds or manually corrected values, the data is transmitted via 2.4G wireless signals to the wireless remote control chips in the tension motor 37, the external heating plate, and the waterproof heater 6. This changes the loading intensity of the settlement plate 11 on the soil and the temperature settings of the waterproof heater 6 and the external heating plate, thus controlling the loading intensity and temperature under different working conditions.

[0047] The cylindrical outer shell 5 of the present invention is filled with vertically arranged gravel (not shown in the figure), the top and bottom of the slurry between the settling plate 11 and the lower box are respectively filled with horizontally arranged gravel (not shown in the figure), and the drainage system also includes a drainage channel formed by the horizontally arranged gravel and the vertically arranged gravel. After the mud is fed into the upper box, it fills the space between the settling plate 11 and the lower box. Before the mud is fed in, a layer of horizontally arranged gravel is laid at the bottom of the lower box. After the mud is fed in, a distance is left between the mud and the settling plate 11. Another layer of horizontally arranged gravel is laid between the top of the mud and the settling plate 11. The movable pulley track and the hollow transmission rod 12 serve as drainage channels. Since the cylindrical shell 5 is open at both ends, the vertically arranged gravel and the horizontally arranged gravel are connected. The movable pulley track and the hollow transmission rod 12 serve as drainage channels. Since the gravel is placed inside the cylindrical shell 5 and laid on the top and bottom of the soil to be consolidated, the pipes inside the box can be connected to form a complete drainage system, so that all the water discharged from the soil can be discharged from the suction device 14. The hollow transmission rod 12 has a dense mesh structure that can move up and down, so that the silt can be cleaned out when the drainage channel is blocked by silt. Each blade 10 of the tightening device 4 is connected to the lower end of a hollow transmission rod 12, and the blade 10 is provided with a sliding groove, which allows the hollow transmission rod 12 to move in a limited manner, so that each hollow transmission rod 12 can drive the tightening blade 10 to move, so that the tightening device 4 tightens inward.

[0048] The settlement plate 11 of this invention is provided with a detachable feeding circular plate 20, which is connected to the settlement plate 11 by a buckle 22. After the detachable feeding circular plate 20 is removed, a feeding port 21 is left. An automatic control device 19 is provided on the detachable feeding circular plate 20. The detachable feeding circular plate 20 can be removed from the settlement plate 11 during feeding. After removal, the soil enters the box body from the circular feeding port 21 on the settlement plate 11. An elastic base 18 is provided at the bottom of the box body, and the discharge port 28 can be opened and closed on the elastic base 18. The elastic base 18 can prevent the box body from being damaged by collision during transportation. At the same time, when the soil is loaded into the box body, the self-weight of the consolidated soil is converted into elastic potential energy. After consolidation is completed, when the soil is removed, the elastic potential energy is used to restore the tightening device 4 to its original state.

[0049] In this embodiment, the upper and lower parts of the box are firmly connected by multiple straight fasteners 55. The box is disassembled for transportation and then firmly connected with fasteners during the consolidation test. Rubber waterproof strips are provided at the joints to ensure that the upper and lower boxes connected by fasteners can be tightly connected and do not leak water.

[0050] The chamber in this embodiment is lined with a waterproof membrane to prevent moisture loss during the test, which could lead to errors.

Claims

1. A thermal solidification treatment device for waste mud, comprising a housing, the housing having a mud inlet (21) and a mud solidification outlet, characterized in that, The housing includes a detachable upper housing (1) and a lower housing (2); the housing is equipped with a loading system, a heating system, a monitoring system, a drainage system, and an automatic control device; the loading system includes a settling plate (11) that can move up and down on the top of the upper housing (1), a power device (3) for applying a vertical load to the settling plate (11), and a tightening device (4) for applying a circumferential load to the mud in the lower housing (2); the tightening device (4) includes several tightening blades (10) that are sequentially overlapped along the circumferential side of the inner wall of the lower housing and can be tightened; a hollow transmission rod (12) is connected between the settling plate (11) and the tightening blades (10) and can push the blades to tighten as the settling plate (11) descends, thereby applying circumferential pressure to the mud; the drainage system includes the hollow transmission rod (12) for applying a circumferential load to the mud in the lower housing (2). The hollow transmission rod (12) has a hole structure on its wall surface that allows the liquid generated after the mud is compressed to enter. The tightening blade (10) is connected to the wall surface of the lower box (2) and a suction device (14) that can pump air as the tightening blade (10) rotates. The bottom of the hollow transmission rod (12) is connected to the inside of the suction device (14) to discharge the liquid inside the hollow transmission rod (12). The heating system is fixed to the bottom of the settling plate (11). The monitoring system includes a displacement monitoring device that can monitor the downward displacement of the settling plate (11) and several pore pressure and temperature integrated sensors (16) for detecting the pore pressure and temperature of the mud. The automatic control device is used to control the operation of the loading system and the heating system according to the value changes of the pore pressure and temperature integrated sensors (16).

2. The waste mud thermal solidification treatment device according to claim 1, characterized in that, The power unit (3) includes a tensioning device (37) located inside the housing, a movable pulley (7) located below the settling plate (11), and a chain (8) led out from the tensioning device (37) and wound around the movable pulley (7). One end of the chain (8) is fixed to the tensioning device (37), and the other end is wound into the tensioning device (37) to drive the movable pulley (7) to descend. The movable pulley (7) has a ring of ball bearings (41) inside. A first folding rod (38) is fixed between the center of the ring of ball bearings (41) and the settling plate (11) and can apply pressure to the settling plate (11) as the movable pulley (7) descends.

3. The waste mud thermal solidification treatment device according to claim 2, characterized in that, A sliding track for vertical movement of the sliding pulley is provided between the settling plate (11) and the lower box; the displacement monitoring device includes the teeth on the chain (8), and the displacement monitoring device determines the displacement of the settling plate (11) by the number of chain teeth in the device of the pulling motor (37).

4. The waste mud thermal solidification treatment device according to claim 1, characterized in that, The suction device (14) includes a suction cylinder (17) whose top is connected to the bottom of the hollow transmission rod (12) and fixed to the tightening blade (10), and a retractable pull rod (26) whose one end is fixed to the inner wall of the lower box and whose other end extends into the opening end of the suction cylinder (17); the end of the retractable pull rod (26) located inside the suction cylinder (17) is fixed with a retractable rubber plug (24); the retractable pull rod (26) has multiple pairs of locking slots for the adapter blocks arranged vertically; the retractable pull rod ( 26) The outside is fitted with a pipe that communicates with the outside world; the vacuum cylinder (17) moves away from the telescopic rod (26) as the tightening blade (10) is tightened. When the retractable rubber plug (24) reaches the opening of the vacuum cylinder (17), the telescopic rod (26) extends to reset the retractable rubber plug (24) to the top of the vacuum cylinder (17), so that the telescopic rod (26) makes a piston movement in the vacuum cylinder (17) to discharge the liquid from the hollow transmission rod (12).

5. The waste mud thermal solidification treatment device according to claim 4, characterized in that, The retractable rod (26) is equipped with a spring (43) inside, and the top of the spring (43) is connected to a retractable rubber plug (24); the top of the retractable rubber plug (24) is equipped with a first pressing block (44), and the two sides are respectively equipped with second pressing blocks (45) at opposite positions; a second folding rod (46) is connected between the first pressing block (44) and the second pressing block (45), and a pulley is provided at the folding point of the second folding rod (46) so that both ends of the second folding rod (46) can rotate around the fixed pulley (47), so that one of the first pressing block (44) and the second pressing block (45) extends and the other retracts; The bottom of the first pressing block (44) is connected to the vertical rod (48) that extends vertically into the rubber stopper, and the second pressing block (45) is connected to the horizontal rod (49) that extends horizontally into the rubber stopper. The retractable rubber stopper (24) has locking blocks (50) on opposite sides that can be locked onto the telescopic pull rod (26). One end of the vertical connecting rod (54) is connected to the horizontal rod (49), and the other end is connected between the locking block (50) and the module (53). The horizontal rod (49) moves through the connecting rod (54) to move the module or locking block (50). The bottom of the vertical rod (48) has an insertion end that can be inserted between two modules (53). When the first pressing block hits the top of the suction cylinder (17), it retracts and drives the vertical rod to move down. The insertion end of the vertical rod is inserted between the two modules (53), so that the locking block (50) extends out and is locked in the corresponding slot of the telescopic rod (26), so that the spring 1 (43) inside the telescopic rod (26) is fixed, thereby fixing the length of the telescopic rod (26). When the first pressing block retracts, the second pressing block (45) pops out. When the second pressing block (45) moves to the opening of the suction cylinder (17), it is restricted and retracts, causing the first pressing block (44) to pop out. Then the vertical rod (48) moves up, causing the two modules (53) to come closer. The horizontal rod (49) retracts, and the locking block (50) retracts, causing the spring (43) to release. The telescopic pull rod (26) extends, allowing the retractable rubber plug (24) to return to the top of the suction cylinder (17).

6. The waste mud thermal solidification treatment device according to claim 1, characterized in that, The outer wall of the tightening blade (10) is provided with a transmission rod groove (13). The bottom of the hollow transmission rod (12) extends into the transmission rod groove (13) and can move from one side to the other side in the transmission rod groove (13) as the settling plate (11) descends, thereby pushing the tightening blade (10) to tighten.

7. The waste mud thermal solidification treatment device according to claim 1, characterized in that, The bottom of the box is provided with a blade slide (32) below the tightening blade (10) for the tightening blade (10) to slide during the tightening process; the blade slide (32) is provided with a fixed end and a movable end, the fixed end is fixed to the bottom of the box, and the movable end is connected to the bottom of the box by a spring (34); when the tightening blade (10) is tightened, the movable end can rotate around the fixed end.

8. The waste mud thermal solidification treatment device according to claim 1, characterized in that, The heating system includes a cylindrical shell (5) with openings at both ends and the top connected to the bottom of the settling plate (11), and a waterproof heater (6) located inside the cylindrical shell (5) that can freely extend and retract with the up and down movement of the settling plate (11).

9. The waste mud thermal solidification treatment device according to claim 8, characterized in that, The columnar outer shell (5) is filled with vertically arranged gravel, and the top and bottom of the mud between the settling plate (11) and the lower box are respectively filled with horizontally arranged gravel. The drainage system also includes a drainage channel formed by connecting the horizontally arranged gravel and the vertically arranged gravel.

10. The waste mud thermal solidification treatment device according to claim 1, characterized in that, The bottom of the lower box is provided with an elastic base (18), and the discharge port (28) can be opened and closed on the elastic base (18).

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