Stirring and mixing device for heavy metal contaminated soil remediation

Abstract

The utility model relates to the technical field of contaminated soil remediation, in particular to a stirring and mixing device for heavy metal contaminated soil remediation, which comprises a stirring drum, a tension spring and a discharging component, a first rotating shaft is arranged on the inner side of the stirring drum and is rotatably connected with the stirring drum, and a second rotating shaft is arranged on the inner side of the first rotating shaft and is rotatably connected with the second rotating shaft; the first rotating shaft is rotationally connected with the second rotating shaft, stirring rods are arranged on the outer sides of the first rotating shaft and the second rotating shaft and rotationally connected with the first rotating shaft and the second rotating shaft, tension springs are arranged on the two sides of each stirring rod, a driving motor is arranged above the stirring barrel, and a discharging assembly is arranged at the bottom of the stirring barrel; the stirring rod is rotationally connected with the first rotating shaft and the second rotating shaft, so that when the stirring rod collides with stones, the stirring rod can transversely rotate to unload force, the stirring rod is prevented from being damaged or falling off due to huge impact force, and the tension springs on the two sides of the stirring rod can pull the rotated stirring rod to reset to continue stirring.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of contaminated soil remediation technology, especially heavy metal contaminated soil remediation's stirring mixing device. BACKGROUND

[0002] Heavy metal contaminated soil remediation refers to reducing or removing the heavy metal content in the soil through a series of techniques and methods, so that it reaches the acceptable environmental standard or safe utilization level. One of the remediation methods is to clean the contaminated soil with water added with chemical reagents. This method requires a device to stir and mix the soil and water, so that the soil is broken up and fully mixed with water to achieve better remediation effect.

[0003] Most of the existing soil stirring and mixing devices use rotating stirring rods for stirring. The stirring rod is rigidly connected with the rotating shaft. However, hard objects such as stones are inevitably mixed in the soil. The high-speed rotating stirring rod may be damaged by colliding with the stones.

[0004] Therefore, in view of the above problems, a heavy metal contaminated soil remediation stirring and mixing device can be designed. The stirring rod is rotatably connected with the rotating shaft, so that the stirring rod can rotate when colliding with the stones to release the force and reduce the probability of damage and falling off of the stirring rod. SUMMARY

[0005] In order to overcome the problem that most soil stirring and mixing devices use rotating stirring rods for stirring, the stirring rod is rigidly connected with the rotating shaft, and hard objects such as stones are inevitably mixed in the soil, and the high-speed rotating stirring rod may be damaged by colliding with the stones.

[0006] The technical scheme of the utility model is as follows: a heavy metal contaminated soil remediation stirring and mixing device, comprising a stirring cylinder, a tension spring and a discharge assembly. The inside of the stirring cylinder is provided with a first rotating shaft, the first rotating shaft is rotatably connected with the stirring cylinder, the inside of the first rotating shaft is provided with a second rotating shaft, the first rotating shaft is rotatably connected with the second rotating shaft, the outside of the first rotating shaft and the second rotating shaft is provided with a stirring rod, the stirring rod is rotatably connected with the first rotating shaft and the second rotating shaft, the two sides of the stirring rod are provided with the tension spring, the upper part of the stirring cylinder is provided with a driving motor, and the bottom of the stirring cylinder is provided with the discharge assembly.

[0007] As a preferred, the upper part of the stirring cylinder is fixedly connected with a feeding hopper, the upper part of the stirring cylinder is provided with a mounting bracket, and the mounting bracket is fixedly connected with the driving motor and the stirring cylinder.

[0008] As a preferred, the discharge assembly comprises a valve and a discharge pipe, the bottom of the stirring cylinder is provided with the discharge pipe, and the side of the discharge pipe is provided with the valve.

[0009] Preferably, the two sides of the stirring rod are provided with first connecting rings, the outer sides of the first rotating shaft and the second rotating shaft are provided with second connecting rings, and the two ends of the tension spring are connected with the first connecting rings and the second connecting rings respectively.

[0010] Preferably, the upper side of the first rotating shaft is provided with a first gear, the first rotating shaft is fixedly connected with the first gear, and the upper side of the second rotating shaft is provided with a connecting plate, and the second rotating shaft is fixedly connected with the connecting plate.

[0011] Preferably, the contact surface of the first gear and the connecting plate is provided with a rolling groove, and the rolling groove is provided with a rolling ball.

[0012] Preferably, one side of the first gear is provided with a second gear, the second gear is rotatably connected with the stirring cylinder, the upper side of the second gear is provided with a power shaft, and the power shaft and the connecting plate are provided with a transmission belt.

[0013] The beneficial effects of the present application are as follows:

[0014] By rotatably connecting the stirring rod with the first rotating shaft and the second rotating shaft, the stirring rod can be transversely rotated to release force when colliding with the stone, preventing the stirring rod from being damaged or falling off due to a large impact force, and the tension spring on both sides of the stirring rod can pull the rotated stirring rod back to position to continue stirring, the driving motor drives the first rotating shaft and the second rotating shaft to rotate in opposite directions, so that the liquid in the stirring cylinder is rotated in opposite directions, preventing vortex to reduce the stirring efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A three-dimensional structure schematic view of the stirring and mixing device for heavy metal contaminated soil remediation is shown.

[0016] Figure 2 A first rotating shaft three-dimensional structure schematic view of the stirring and mixing device for heavy metal contaminated soil remediation is shown.

[0017] Figure 3 A stirring rod three-dimensional structure schematic view of the stirring and mixing device for heavy metal contaminated soil remediation is shown.

[0018] Figure 4 A first gear three-dimensional structure schematic view of the stirring and mixing device for heavy metal contaminated soil remediation is shown.

[0019] Explanation of reference signs: 1, stirring drum; 2, first rotating shaft; 3, second rotating shaft; 4, stirring rod; 5, driving motor; 6, tension spring; 7, first gear; 8, second gear; 9, connecting plate; 101, feeding hopper; 102, mounting bracket; 103, valve; 104, discharge pipe; 601, first connecting ring; 602, second connecting ring; 701, rolling groove; 702, ball; 801, power shaft; 901, transmission belt. DETAILED DESCRIPTION

[0020] The utility model is further explained in connection with the drawings and examples.

[0021] Please refer to Figures 1-4 The utility model provides a kind of embodiment: heavy metal contaminated soil remediation's stirring mixing device, including stirring drum 1, tension spring 6 and discharge assembly, the inside of stirring drum 1 is provided with first rotating shaft 2, first rotating shaft 2 is rotatably connected with stirring drum 1, the inside of first rotating shaft 2 is provided with second rotating shaft 3, first rotating shaft 2 is rotatably connected with second rotating shaft 3, the outside of first rotating shaft 2 and second rotating shaft 3 is provided with stirring rod 4, stirring rod 4 is rotatably connected with first rotating shaft 2 and second rotating shaft 3, the two sides of stirring rod 4 are provided with tension spring 6, the top of stirring drum 1 is provided with driving motor 5, the bottom of stirring drum 1 is provided with discharge assembly; by stirring rod 4 with first rotating shaft 2 and second rotating shaft 3 rotatably connected, make stirring rod 4 when colliding with stone block, can transversely rotate and unload, prevent stirring rod 4 from being damaged or falling off by huge impact force, the tension spring 6 of stirring rod 4 two sides will pull the stirring rod 4 after rotation Reset continues to stir, driving motor 5 drives first rotating shaft 2 and second rotating shaft 3 coaxial reverse rotation, make the liquid in stirring drum 1 upside-down part rotation direction opposite, prevent vortex and reduce stirring efficiency.

[0022] Please refer to Figure 1 In the embodiment, the top of stirring drum 1 is fixedly connected with feeding hopper 101, the top of stirring drum 1 is provided with mounting bracket 102, and mounting bracket 102 is fixedly connected with driving motor 5 and stirring drum 1; feeding hopper 101 is used to add contaminated soil and remediation reagent into stirring drum 1, and mounting bracket 102 is used to mount and fix driving motor 5.

[0023] Please refer to Figure 2 In the embodiment, the discharge assembly includes valve 103 and discharge pipe 104, the bottom of stirring drum 1 is provided with discharge pipe 104, one side of discharge pipe 104 is provided with valve 103; after stirring, open valve 103, and soil and reagent are discharged from discharge pipe 104 under the action of gravity.

[0024] Please refer to Figure 3In the embodiment, the first connecting ring 601 is arranged on both sides of the stirring rod 4, the second connecting ring 602 is arranged on the outer side of the first rotating shaft 2 and the second rotating shaft 3, and the two ends of the tension spring 6 are connected with the first connecting ring 601 and the second connecting ring 602 respectively; the first connecting ring 601 and the second connecting ring 602 fix the two ends of the tension spring 6 with the stirring rod 4 and the rotating shaft respectively, so that the tension spring 6 can drive the stirring rod 4 to rotate until the tension of the tension spring 6 on both sides of the stirring rod 4 is consistent after the stirring rod 4 is deflected.

[0025] Please refer to Figure 4 In the embodiment, the first gear 7 is arranged above the first rotating shaft 2 and fixedly connected with the first rotating shaft 2, the connecting plate 9 is arranged above the second rotating shaft 3 and fixedly connected with the second rotating shaft 3, the contact surface of the first gear 7 and the connecting plate 9 is provided with a rolling groove 701, the rolling groove 701 is provided with a rolling ball 702, the second gear 8 is arranged on one side of the first gear 7 and rotatably connected with the stirring drum 1, the power shaft 801 is arranged above the second gear 8 and provided with a transmission belt 901 between the power shaft 801 and the connecting plate 9; the driving motor 5 drives the connecting plate 9 to rotate, drives the second rotating shaft 3 to rotate in a forward direction, and drives the second gear 8 to rotate by the transmission belt 901 and the power shaft 801, so that the first gear 7 is reversely rotated to drive the first rotating shaft 2 to reversely rotate, and the rolling ball 702 can reduce the friction between the connecting plate 9 and the first gear 7.

[0026] When the device is used, the valve 103 is closed, the material is put into the stirring drum 1 from the feeding hopper 101, the driving motor 5 drives the connecting plate 9 to rotate, drives the second rotating shaft 3 to rotate in a forward direction, and drives the second gear 8 to rotate by the transmission belt 901 and the power shaft 801, so that the first gear 7 is reversely rotated to drive the first rotating shaft 2 to reversely rotate, the first rotating shaft 2 and the second rotating shaft 3 rotate in opposite directions to drive the stirring rods 4 in the upper and lower parts of the stirring drum 1 to rotate in opposite directions, so as to prevent the stirring drum 1 from forming a vortex to affect the stirring efficiency, the stirring rods 4 are transversely rotated to release force when the stirring rods 4 collide with the stones, so as to prevent the stirring rods 4 from being damaged or falling off due to a great impact force, and the tension spring 6 can drive the stirring rod 4 to rotate until the tension of the tension spring 6 on both sides of the stirring rod 4 is consistent after the stirring rod 4 is deflected, so as to reset the stirring rod 4 to continue stirring.

[0027] The embodiments of the utility model are described in detail in combination with the drawings above, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of the person skilled in the art without departing from the purpose of the utility model.

Claims

1. A mixing device for remediation of heavy metal contaminated soil, comprising a mixing drum (1); characterized in that: It also includes a tension spring (6) and a discharge assembly, the inner side of the stirring drum (1) is provided with a first rotating shaft (2), the first rotating shaft (2) is rotatably connected with the stirring drum (1), the inner side of the first rotating shaft (2) is provided with a second rotating shaft (3), the first rotating shaft (2) is rotatably connected with the second rotating shaft (3), the outer side of the first rotating shaft (2) and the second rotating shaft (3) is provided with a stirring rod (4), the stirring rod (4) is rotatably connected with the first rotating shaft (2) and the second rotating shaft (3), the two sides of the stirring rod (4) are provided with a tension spring (6), the upper side of the stirring drum (1) is provided with a driving motor (5), the bottom of the stirring drum (1) is provided with a discharge assembly.

2. The mixing device for remediation of heavy metal contaminated soil according to claim 1, wherein: The upper side of the stirring drum (1) is fixedly connected with a feeding hopper (101), the upper side of the stirring drum (1) is provided with a mounting bracket (102), the mounting bracket (102) is fixedly connected with the driving motor (5) and the stirring drum (1).

3. The mixing device for remediation of heavy metal contaminated soil according to claim 1, wherein: The discharge assembly comprises a valve (103) and a discharge pipe (104), the bottom of the stirring drum (1) is provided with the discharge pipe (104), one side of the discharge pipe (104) is provided with the valve (103).

4. The mixing device for remediation of heavy metal contaminated soil according to claim 1, wherein: The two sides of the stirring rod (4) are provided with a first connecting ring (601), the outer side of the first rotating shaft (2) and the second rotating shaft (3) is provided with a second connecting ring (602), the two ends of the tension spring (6) are connected with the first connecting ring (601) and the second connecting ring (602) respectively.

5. The mixing apparatus for remediation of heavy metal contaminated soil according to claim 1, wherein: The upper side of the first rotating shaft (2) is provided with a first gear (7), the first rotating shaft (2) is fixedly connected with the first gear (7), the upper side of the second rotating shaft (3) is provided with a connecting plate (9), the second rotating shaft (3) is fixedly connected with the connecting plate (9).

6. The mixing apparatus for remediation of heavy metal contaminated soil according to claim 5, wherein: The contact surface of the first gear (7) and the connecting plate (9) is provided with a rolling groove (701), the rolling groove (701) is provided with a ball (702).

7. The mixing apparatus for remediation of heavy metal contaminated soil according to claim 5, wherein: One side of the first gear (7) is provided with a second gear (8), the second gear (8) is rotatably connected with the stirring drum (1), the upper side of the second gear (8) is provided with a power shaft (801), the power shaft (801) and the connecting plate (9) are provided with a transmission belt (901).

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