Hydrothermal stabilizing treatment device

Abstract

The utility model relates to a hydrothermal stabilization treatment device which comprises a support, a reaction tank is arranged on the support, the reaction tank is rotationally connected to the support, a driving assembly for driving the reaction tank to rotate is arranged on the support, a stirring assembly is arranged on the reaction tank, and the stirring assembly comprises a stirring motor arranged on the reaction tank. A stirring shaft is arranged on an output shaft of the stirring motor, multiple sections of reciprocating grooves are formed in the stirring shaft, convex circles are slidably connected into the reciprocating grooves, connecting sleeves are arranged on the convex circles, and a plurality of stirring rods are uniformly arranged on the peripheral surfaces of the connecting sleeves at equal intervals. In the process that the driving assembly drives the reaction tank to rotate, the stirring rod in the stirring assembly reciprocates in the length direction of the reaction tank, so that the possibility of generating a stirring dead angle in the reaction tank is reduced. The method has the effect of improving the heavy metal removal rate.

Description

Technical Field

[0001] The present application relates to the technical field of incineration fly ash treatment, and in particular to a hydrothermal stabilization treatment device. Background Art

[0002] Incineration fly ash is the collected material of the flue gas purification system and the bottom ash settled at the bottom of the flue and chimney during the incineration disposal of municipal domestic waste. Incineration fly ash mainly includes heavy metals, dioxins and various organic salts. Among them, heavy metals are a typical hazardous waste. When discharged into the external environment, they will cause potential harm to animals, plants and humans. Therefore, incineration fly ash needs to be treated to remove heavy metals, usually by hydrothermal stabilization treatment.

[0003] A Chinese patent with publication number CN216824633U discloses a hydrothermal stabilization treatment device for heavy metals in hazardous waste incineration fly ash, including a treatment box, a heating plate fixedly connected to the inner wall of the treatment box, a motor fixedly connected to the right side of the treatment box, a rotating shaft fixedly connected to the output end of the motor, and the rotating shaft is rotatably connected to the treatment box through a bearing, a stirring paddle fixedly connected to the surface of the rotating shaft, and an air pump fixedly connected to the left side of the treatment box, so that the temperature is maintained at the optimal temperature for the reaction between the stabilizer and the heavy metals in the incineration fly ash. The stirring paddle is driven by the motor for stirring, so that the incineration fly ash and the stabilizer are in more complete contact, so that the stabilizer and the heavy metal ions quickly generate precipitates, thereby achieving the goal of effectively treating heavy metals in hazardous waste incineration fly ash and avoiding secondary pollution caused by the incineration fly ash.

[0004] However, the stirring paddle on the rotating shaft of the device is for fixed stirring, so there is a dead corner inside the treatment box that cannot be stirred by the stirring paddle, so that the incineration fly ash and stabilizer in the treatment box cannot be fully mixed, thereby reducing the stabilization effect of heavy metals in the incineration fly ash and the removal rate of heavy metals, which is obviously insufficient. Utility Model Content

[0005] In order to improve the removal rate of heavy metals in incineration fly ash, the present application provides a hydrothermal stabilization treatment device.

[0006] The hydrothermal stabilization treatment device provided in this application adopts the following technical solution:

[0007] A hydrothermal stabilization treatment device includes a bracket, a reaction tank is provided on the bracket, an air inlet pipe is provided on the reaction tank, the reaction tank is rotatably connected to the bracket, a driving component for driving the reaction tank to rotate is provided on the bracket, a stirring component is provided on the reaction tank, the stirring component includes a stirring motor provided on the reaction tank, the output shaft of the stirring motor is provided with a stirring shaft, the stirring shaft is rotatably connected to the inside of the reaction tank, multiple reciprocating grooves are provided on the stirring shaft, a convex circle is slidably connected in the reciprocating groove, a connecting sleeve is provided on the convex circle, a plurality of stirring rods are evenly and equidistantly provided on the outer circumference of the connecting sleeve, and the plurality of stirring rods are rotatably connected in the reaction tank.

[0008] By adopting the above technical solution, the incineration fly ash is introduced into the reaction tank through the air inlet pipe, and the stabilizer is added through the feed pipe, and then the driving component and the stirring motor are started. The stirring motor drives the stirring shaft to rotate, and the rotation of the stirring shaft drives the cam in the reciprocating groove to move back and forth along the reciprocating groove. The movement of the cam drives the connecting sleeve to move back and forth along the length direction of the reaction tank, and the movement of the connecting sleeve drives the stirring rod to move, thereby expanding the stirring range of the stirring rod. At the same time, the driving component drives the reaction tank to rotate, and during the rotation of the reaction tank, the stirring rod produces a rotational motion relative to the reaction tank, thereby increasing the range of action of the stirring rod in the circumferential direction of the reaction tank, thereby further expanding the stirring range of the stirring rod. Such an arrangement reduces the possibility of stirring dead corners in the reaction tank, so that the incineration fly ash and the stabilizer are fully mixed, thereby improving the stabilization effect of heavy metals in the incineration fly ash, thereby improving the removal rate of heavy metals.

[0009] Optionally, the drive assembly includes a drive motor arranged on the bracket, the output shaft of the drive motor is coaxially fixedly connected to a driving gear, and the outer surface of the reaction tank is provided with a driven gear ring meshing with the driving gear.

[0010] By adopting the above technical solution, after the drive motor is started, the drive motor drives the driving gear to rotate, and the rotation of the driving gear drives the driven gear ring to rotate. During the rotation of the driven gear ring, the reaction tank is driven to rotate on the bracket. The rotation of the reaction tank causes the incineration fly ash to continuously change its position in the reaction tank, avoiding the accumulation of incineration fly ash at the bottom of the reaction tank and forming a stirring dead corner, thereby increasing the probability of the incineration fly ash being stirred, and thus improving the removal rate of heavy metals.

[0011] Optionally, a reciprocating screw and a guide rod are respectively provided on opposite sides of the reaction tank, the reciprocating screw is rotatably connected inside the reaction tank, a mounting ring is threadedly connected to the reciprocating screw, and the mounting ring is slidably connected to the guide rod at one end away from the reciprocating screw, and a heating ring is provided on the end face of the mounting ring facing the stirring shaft.

[0012] By adopting the above technical solution, when processing incineration fly ash, the worker rotates the reciprocating screw. Under the guidance of the guide rod, the rotation of the reciprocating screw drives the mounting ring to move back and forth along the length direction of the reaction tank. The movement of the mounting ring drives the movement of the heating ring, so that the heating ring heats various positions inside the reaction tank, so that the heat can be more evenly distributed in the entire reaction tank. This arrangement avoids the occurrence of stabilizer decomposition caused by local overheating caused by heating at a fixed position, thereby further improving the reaction effect between heavy metals and stabilizers, and improving the removal rate of heavy metals.

[0013] Optionally, the stirring shaft and the reciprocating screw are coaxially fixedly connected with synchronous wheels, and the outer surfaces of the synchronous wheels are sleeved with synchronous belts.

[0014] By adopting the above technical solution, when the stirring motor drives the stirring shaft to rotate, the stirring shaft drives the reciprocating screw to rotate synchronously through the transmission action of the synchronous wheel and the synchronous belt. This setting reduces the setting of the power source, and at the same time realizes the synchronization of the movement of the stirring shaft and the heating ring, thereby improving the stability of the operation of the device.

[0015] Optionally, the air inlet pipe extends to one end of the reaction tank and is sleeved on the outer surface of the stirring shaft. An air inlet groove connected to the air inlet pipe is provided at the end of the stirring shaft away from the stirring motor. A spiral plate is provided in the air inlet groove. A plurality of air outlets connected to the air inlet groove are provided on the stirring shaft, and the air outlet direction of the air outlet is toward the interior of the reaction tank.

[0016] By adopting the above technical solution, when the incineration fly ash enters the interior of the reaction tank, the stirring shaft drives the spiral plate to rotate. When the gas carrying the incineration fly ash first passes through the rotating spiral plate, the spiral plate guides and disperses the incoming air, so that the gas is evenly distributed in the air inlet groove. At the same time, as the stirring shaft rotates, the gas is evenly sprayed into the interior of the reaction tank from multiple outlets and fully contacts the stabilizer, thereby further improving the reaction effect between the heavy metals and the stabilizer.

[0017] Optionally, a sealing ring is sleeved on the outer surface of the stirring shaft, and a sealing groove rotatably engaged with the sealing ring is opened on the inner wall of the air inlet pipe, and the sealing ring is made of rubber material.

[0018] By adopting the above technical solution, the sealing performance of the connection between the air intake pipe and the stirring shaft is improved by plugging and fitting the sealing ring and the sealing groove, effectively preventing the possibility of air leakage through the gap between the air intake pipe and the stirring shaft, and at the same time increasing the probability of air intake entering the interior of the reaction tank along the air intake groove, further improving the uniformity of air intake.

[0019] Optionally, two axles are provided at one end of the bracket away from the drive motor, and the two axles are respectively provided at opposite ends of the reaction tank. Rollers are rotatably connected to the axles, and the outer wall of the reaction tank is provided with a guide groove along the circumferential direction for rolling cooperation with the rollers.

[0020] By adopting the above technical solution, the setting of the roller plays a role in supporting the reaction tank, and drives the roller to rotate in the opposite direction during the rotation of the reaction tank, so that the roller does not affect the stirring work inside the reaction tank while supporting the reaction tank. At the same time, the guide groove can limit the rotation position of the roller, preventing the roller from deviating on the wheel axle and causing the reaction tank to tilt. This setting improves the stability of the reaction tank in rotating on the bracket and ensures the normal progress of the reaction process inside the reaction tank.

[0021] Optionally, the stirring shaft, the stirring rod and the reaction tank are all made of corrosion-resistant materials.

[0022] By adopting the above technical solution, the corrosion-resistant material can enable the reaction tank to maintain stable physical properties during long-term use, reduce problems such as deformation, rupture or leakage inside the reaction tank due to corrosion, and extend the service life of the device.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The present invention provides a stirring assembly and a driving assembly. When the driving assembly drives the reaction tank to rotate, the stirring rod in the stirring assembly reciprocates along the length of the reaction tank, thereby expanding the stirring range of the stirring rod. This arrangement reduces the possibility of stirring dead corners in the reaction tank, thereby allowing the incineration fly ash and the stabilizer to be fully mixed, improving the stabilization effect of heavy metals in the incineration fly ash, and thus improving the removal rate of heavy metals.

[0025] 2. This application provides a reciprocating screw, a guide rod, and a heating ring. The rotation of the reciprocating screw drives the heating ring to reciprocate along the length of the reaction tank, so that the heating ring heats various positions inside the reaction tank, making the heat more evenly distributed throughout the reaction tank. This arrangement avoids the occurrence of local overheating caused by heating at a fixed position, which may cause the decomposition of the stabilizer, thereby further improving the reaction effect between heavy metals and stabilizers and increasing the removal rate of heavy metals. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of this application.

[0027] Figure 2 It is a cross-sectional view of the reaction tank in the embodiment of the present application.

[0028] Figure 3It is a cross-sectional view of the air intake pipe in the embodiment of the present application.

[0029] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0030] Explanation of the accompanying drawings: 1. Bracket; 2. Reactor; 21. Air inlet pipe; 22. Air outlet pipe; 23. Water inlet pipe; 3. Drive assembly; 31. Drive motor; 32. Driving gear; 33. Driven gear ring; 4. Wheel axle; 41. Roller; 24. Guide groove; 5. Stirring assembly; 51. Stirring motor; 52. Stirring shaft; 521. Reciprocating groove; 53. Cam; 54. Connecting sleeve; 55. Stirring rod; 6. Sealing ring; 7. Sealing groove; 8. Air inlet groove; 81. Spiral plate; 82. Air outlet; 9. Reciprocating screw; 10. Guide rod; 11. Mounting ring; 12. Heating ring; 13. Synchronous wheel; 14. Synchronous belt. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The embodiments of the present application disclose a hydrothermal stabilization treatment device.

[0033] Reference Figure 1 A hydrothermal stabilization treatment device includes a bracket 1, on which a reaction tank 2 is arranged, and the reaction tank 2 is filled with a stabilizer for reacting with heavy metals. One end of the reaction tank 2 is rotatably connected to an air inlet pipe 21 for conveying incineration fly ash, and the other end is rotatably connected to an air outlet pipe 22. An electromagnetic valve (not shown in the figure) for controlling the air outlet state of the air outlet pipe 22 is fixedly installed on the air outlet pipe 22. An inlet pipe 23 for water intake is fixedly installed at one end of the reaction tank 2 close to the air outlet pipe 22. A pipe cover is threadedly connected to the outer surface of the water inlet pipe 23. The water inlet pipe 23, the air inlet pipe 21, the air outlet pipe 22 and the water inlet pipe 23 are all connected to the interior of the reaction tank 2.

[0034] When heavy metal treatment is required for the incineration fly ash, the worker first unscrews the pipe cover and injects water into the reaction tank 2 through an external water pipe. The worker then tightens the pipe cover to keep the water inlet pipe 23 sealed. The worker then injects gas carrying incineration fly ash into the reaction tank 2 through the air inlet pipe 21. After the gas enters the reaction tank 2, the heavy metals in the incineration fly ash react with the stabilizer, causing the stabilizer and the heavy metal ions to quickly generate precipitates, thereby achieving the removal of heavy metals.

[0035] Reference Figure 1 and Figure 2A driving assembly 3 is provided on the bracket 1, and the driving assembly 3 includes a driving motor 31 fixedly mounted on the bracket 1. The output shaft of the driving motor 31 is coaxially fixedly connected with a driving gear 32. The driving gear 32 is rotatably connected to the bracket 1, and a driven gear ring 33 meshing with the driving gear 32 is fixedly sleeved on the outer surface of the reaction tank 2.

[0036] Reference Figure 1 and Figure 2 Two wheel axles 4 are fixedly installed on one end of the bracket 1 away from the drive motor 31. The two wheel axles 4 are relatively arranged on both sides of the reaction tank 2. The outer surface of each wheel axle 4 is rotatably connected to a roller 41, and the outer wall of the stirring shaft 52 is provided with a guide groove 24 along the circumferential direction for rolling cooperation with the roller 41.

[0037] After the drive motor 31 is started, the drive motor 31 drives the driving gear 32 to rotate. The rotation of the driving gear 32 drives the driven gear ring 33 to rotate. During the rotation of the driven gear ring 33, the reaction tank 2 is driven to rotate on the bracket 1. The rotation of the reaction tank 2 causes the incineration fly ash to continuously change its position in the reaction tank 2, thereby preventing the incineration fly ash from accumulating at the bottom of the reaction tank 2 and forming a stirring dead angle, thereby increasing the probability of the incineration fly ash being stirred, thereby improving the removal rate of heavy metals;

[0038] At the same time, the roller 41 stably supports the rotation of the reaction tank 2 on the bracket 1, and drives the roller 41 to rotate in the opposite direction during the rotation of the reaction tank 2. At the same time, the guide groove 24 can limit the rotation position of the roller 41, preventing the roller 41 from deviating from the wheel shaft 4 and causing the reaction tank 2 to tilt, thereby ensuring the normal progress of the reaction process inside the reaction tank 2.

[0039] Reference Figure 2 and Figure 3 A stirring assembly 5 is provided in the reaction tank 2, and the stirring assembly 5 includes a stirring motor 51 fixedly installed at one end of the reaction tank 2 away from the air inlet pipe 21, and the output shaft of the stirring motor 51 is coaxially fixedly connected with a stirring shaft 52, and the axis of the stirring shaft 52 is parallel to the axis of the reaction tank 2, and the stirring shaft 52 is rotatably connected to the inside of the reaction tank 2, and a plurality of reciprocating grooves 521 are provided on the stirring shaft 52, and the reciprocating groove 521 is composed of a left spiral groove and a right spiral groove connected end to end. A convex circle 53 (not shown in the figure) is slidably connected in each reciprocating groove 521, and a connecting sleeve 54 is fixedly connected to each convex circle 53, and a plurality of stirring rods 55 are fixedly connected to the outer surface of each connecting sleeve 54. The plurality of stirring rods 55 are equidistantly and evenly distributed on the outer surface of the connecting shaft, and the plurality of stirring rods 55 are rotatably connected to the inside of the reaction tank 2.

[0040] The incineration fly ash is introduced into the reaction tank 2 through the air inlet pipe 21, and the drive motor 31 and the stirring motor 51 are started. The stirring motor 51 drives the stirring shaft 52 to rotate. The rotation of the stirring shaft 52 drives the convex circle 53 in the reciprocating groove 521 to move back and forth along the reciprocating groove 521. The movement of the convex circle 53 drives the connecting sleeve 54 to move back and forth along the length direction of the reaction tank 2. The movement of the connecting sleeve 54 drives the stirring rod 55 to move, thereby expanding the stirring range of the stirring rod 55. At the same time, the driving component 3 drives the reaction tank 2 to rotate. During the rotation of the reaction tank 2, the stirring rod 55 produces a rotational motion relative to the reaction tank 2, increasing the range of action of the stirring rod 55 in the circumferential direction of the reaction tank 2, thereby further expanding the stirring range of the stirring rod 55. This arrangement reduces the possibility of stirring dead corners in the reaction tank 2, thereby fully mixing the incineration fly ash and the stabilizer, improving the stabilization effect of heavy metals in the incineration fly ash, and thus improving the removal rate of heavy metals.

[0041] Reference Figure 3 and Figure 4 A sealing ring 6 is fixedly connected to the outer surface of the stirring shaft 52, and the sealing ring 6 is sleeved on the outer surface of the stirring shaft 52. A sealing groove 7 for rotating with the sealing ring 6 is opened on the inner wall of the air intake pipe 21. The sealing ring 6 is made of rubber material. When the sealing ring 6 is inserted into the sealing groove 7, the air intake pipe 21 extends to one end of the reaction tank 2 and is sleeved on the outer surface of the stirring shaft 52. This arrangement improves the sealing performance of the connection between the air intake pipe 21 and the stirring shaft 52, and effectively prevents the possibility of air leakage through the gap between the air intake pipe 21 and the stirring shaft 52.

[0042] Reference Figure 3 and Figure 4 An air inlet groove 8 connected to the air inlet pipe 21 is provided at one end of the stirring shaft 52 away from the stirring motor 51, and a spiral plate 81 is fixedly connected to the air inlet groove 8. The axis of the spiral plate 81 and the axis of the stirring shaft 52 are on the same straight line. A plurality of air outlets 82 connected to the air inlet groove 8 are provided on the stirring shaft 52, and the air outlet direction of the air outlet 82 is toward the inside of the reaction tank 2.

[0043] During the process of the incineration fly ash entering the interior of the reaction tank 2, the stirring shaft 52 drives the spiral plate 81 to rotate. When the gas carrying the incineration fly ash first passes through the rotating spiral plate 81, the spiral plate 81 guides and disperses the incoming air, so that the gas is evenly distributed in the air inlet groove 8. At the same time, as the stirring shaft 52 rotates, the gas is evenly sprayed into the interior of the reaction tank 2 from multiple air outlets 82 and fully contacts the stabilizer, thereby further improving the reaction effect between the heavy metals and the stabilizer.

[0044] Reference Figure 2 and Figure 3A reciprocating screw rod 9 and a guide rod 10 are respectively provided on the opposite inner side walls of the reaction tank 2, wherein the reciprocating screw rod 9 is rotatably connected to the inside of the reaction tank 2, and the guide rod 10 is fixedly connected to the inside of the reaction tank 2. A mounting ring 11 is threadedly connected to the reciprocating screw rod 9, and the end of the mounting ring 11 away from the reciprocating screw rod 9 is slidably connected to the guide rod 10. A heating ring 12 is fixedly connected to the end surface of the mounting ring 11 facing the stirring shaft 52. Synchronous wheels 13 are coaxially fixedly connected to the stirring shaft 52 and the reciprocating screw rod 9, and a synchronous belt 14 is commonly sleeved on the outer surfaces of the two synchronous wheels 13.

[0045] When the stirring motor 51 drives the stirring shaft 52 to rotate, the stirring shaft 52 drives the reciprocating screw 9 to rotate synchronously through the transmission action of the synchronous wheel 13 and the synchronous belt 14. Under the guidance of the guide rod 10, the reciprocating screw 9 rotates to drive the mounting ring 11 to move back and forth along the length direction of the reaction tank 2. The movement of the mounting ring 11 drives the heating ring 12 to move, so that the heating ring 12 heats various positions inside the reaction tank 2, so that the heat can be more evenly distributed in the entire reaction tank 2. This arrangement avoids the occurrence of stabilizer decomposition caused by local overheating caused by heating at a fixed position, thereby further improving the reaction effect between heavy metals and stabilizers, and improving the removal rate of heavy metals.

[0046] The implementation principle of a hydrothermal stabilization treatment device in an embodiment of the present application is as follows: the incineration fly ash is introduced into the reaction tank 2 through the air inlet pipe 21, the drive motor 31 and the stirring motor 51 are started, the stirring motor 51 drives the stirring shaft 52 to rotate, and the rotation of the stirring shaft 52 drives the convex circle 53 in the reciprocating groove 521 to move back and forth along the reciprocating groove 521, and the movement of the convex circle 53 drives the connecting sleeve 54 to move back and forth along the length direction of the reaction tank 2, and the movement of the connecting sleeve 54 drives the stirring rod 55 to move, thereby expanding the stirring range of the stirring rod 55, and at the same time, the driving component 3 drives the reaction tank 2 to rotate, and during the rotation of the reaction tank 2, the stirring rod 55 generates a rotational motion relative to the reaction tank 2, thereby increasing the range of action of the stirring rod 55 in the circumferential direction of the reaction tank 2, thereby further expanding the stirring range of the stirring rod 55, and such a setting reduces the possibility of a stirring dead angle in the reaction tank 2, so that the incineration fly ash and the stabilizer are fully mixed, thereby improving the stabilization effect of heavy metals in the incineration fly ash, and thus improving the removal rate of heavy metals.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A hydrothermal stabilization treatment device, comprising a bracket (1), a reaction tank (2) being provided on the bracket (1), an air inlet pipe (21) being provided on the reaction tank (2), characterized in that: The reaction tank (2) is rotatably connected to the bracket (1); a driving assembly (3) for driving the reaction tank (2) to rotate is provided on the bracket (1); a stirring assembly (5) is provided on the reaction tank (2); the stirring assembly (5) comprises a stirring motor (51) provided on the reaction tank (2); an output shaft of the stirring motor (51) is provided with a stirring shaft (52); the stirring shaft (52) is rotatably connected to the interior of the reaction tank (2); a plurality of reciprocating grooves (521) are provided on the stirring shaft (52); a convex circle (53) is slidably connected in the reciprocating groove (521); a connecting sleeve (54) is provided on the convex circle (53); a plurality of stirring rods (55) are evenly and equidistantly provided on the outer circumference of the connecting sleeve (54); the plurality of stirring rods (55) are rotatably connected to the interior of the reaction tank (2).

2. The hydrothermal stabilization treatment device according to claim 1, characterized in that: The drive assembly (3) comprises a drive motor (31) arranged on the bracket (1); the output shaft of the drive motor (31) is coaxially fixedly connected to a driving gear (32); and the outer surface of the reaction tank (2) is provided with a driven gear ring (33) meshing with the driving gear (32).

3. The hydrothermal stabilization treatment device according to claim 2, characterized in that: A reciprocating screw rod (9) and a guide rod (10) are respectively provided on opposite sides of the reaction tank (2); the reciprocating screw rod (9) is rotatably connected to the reaction tank (2); a mounting ring (11) is threadedly connected to the reciprocating screw rod (9); an end of the mounting ring (11) away from the reciprocating screw rod (9) is slidably connected to the guide rod (10); and a heating ring (12) is provided on the end surface of the mounting ring (11) facing the stirring shaft (52).

4. The hydrothermal stabilization treatment device according to claim 3, characterized in that: The stirring shaft (52) and the reciprocating screw rod (9) are both coaxially fixedly connected with a synchronous wheel (13), and the outer surface of the synchronous wheel (13) is sleeved with a synchronous belt (14).

5. The hydrothermal stabilization treatment device according to claim 1, characterized in that: The air inlet pipe (21) extends to one end of the reaction tank (2) and is sleeved on the outer surface of the stirring shaft (52). The end of the stirring shaft (52) away from the stirring motor (51) is provided with an air inlet groove (8) connected to the air inlet pipe (21). A spiral plate (81) is provided in the air inlet groove (8). The stirring shaft (52) is provided with a plurality of air outlets (82) connected to the air inlet groove (8), and the air outlet direction of the air outlet (82) is toward the interior of the reaction tank (2).

6. The hydrothermal stabilization treatment device according to claim 5, characterized in that: The outer surface of the stirring shaft (52) is sleeved with a sealing ring (6), and the inner side wall of the air inlet pipe (21) is provided with a sealing groove (7) that rotates with the sealing ring (6), and the sealing ring (6) is made of rubber material.

7. The hydrothermal stabilization treatment device according to claim 2, characterized in that: Two wheel axles (4) are provided at one end of the bracket (1) away from the drive motor (31), and the two wheel axles (4) are respectively provided at opposite ends of the reaction tank (2). Rollers (41) are rotatably connected to the wheel axles (4), and guide grooves (24) for rolling engagement with the rollers (41) are provided along the circumferential direction on the outer wall of the reaction tank (2).

8. The hydrothermal stabilization treatment device according to claim 1, characterized in that: The stirring shaft (52), the stirring rod (55) and the reaction tank (2) are all made of corrosion-resistant materials.

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