An in-situ remediation system for riverbed sediments

Abstract

This invention discloses an in-situ remediation system for riverbed sediment, belonging to the field of in-situ remediation technology. It includes: a support frame; a liquid storage cylinder fixedly mounted on the support frame; a rotating cylinder rotatably mounted on the liquid storage cylinder; multiple collars fitted onto the rotating cylinder; multiple loosening rods mounted on the collars via ball joints; liquid outlet holes penetrating along the axis of the loosening rods; locking holes near the end of the loosening rods near the liquid storage cylinder; multiple limiting holes corresponding to the locking holes on the rotating cylinder; limiting sleeves slidably mounted within the limiting holes; an arc-shaped notch at the bottom of the liquid storage cylinder, corresponding to the limiting sleeve located at the bottom of the rotating cylinder; a connecting rope connected to the end of the loosening rod near the liquid storage cylinder; and a rotating shaft rotatably mounted inside the rotating cylinder via a torsion spring, with one end of the connecting rope fixed to the rotating shaft. This invention, by mounting the loosening rods via ball joints, prevents damage to the front end of the loosening rod when it encounters large, hard, invisible rocks in the riverbed during the loosening process.

Description

Technical Field

[0001] This invention belongs to the field of in-situ remediation technology, specifically relating to an in-situ remediation system for riverbed sediment. Background Technology

[0002] Currently, in in-situ remediation of sediment, solid remediation materials are typically applied by covering or spreading, while liquid remediation materials are typically injected directly through tubing.

[0003] In the prior art, Chinese Patent No. CN 113770171 B discloses an in-situ injection remediation method based on in-situ oxidation remediation of soil. The method involves inserting the injection tube assembly into the contaminated soil in a continuous rolling manner while the vehicle is in motion, and performing continuous rolling injection remediation. However, for riverbed sediment, due to limited visibility, there are invisible hard objects such as stones and garbage. If the above technology encounters hard stones during continuous rolling injection remediation, it is easy to damage the injection tube assembly, thus affecting the durability of the injection remediation equipment.

[0004] Therefore, a riverbed sediment in-situ remediation system is needed to solve the above problems. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an in-situ remediation system for riverbed sediment, which solves the problem that in the prior art, when underwater soil is continuously injected for remediation, if it encounters hard rocks, the injection tube assembly is easily damaged, thus affecting the durability of the injection remediation equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This invention provides an in-situ remediation system for riverbed sediment, comprising: a support frame connected to a moving mechanism; a storage cylinder for storing remediation fluid fixedly installed on the support frame; a rotating cylinder rotatably mounted on the storage cylinder; multiple collars fixedly mounted side-by-side on the rotating cylinder; multiple loosening rods axially ball-jointed on the collars with the collar axis as the center; each loosening rod having a through-hole extending along its axis; a locking hole near the end of the loosening rod close to the storage cylinder, the diameter of the locking hole being larger than the diameter of the through-hole; and the rotating cylinder having a rotating cylinder axis... The circumference of the line is provided with multiple limiting holes that correspond one-to-one with the lock holes. Limiting sleeves are slidably installed in the limiting holes. Sliding the limiting sleeves can connect or disconnect them from the lock holes to lock or unlock the loosening rod. An arc-shaped notch is provided below the liquid storage cylinder. The arc-shaped notch corresponds to the limiting sleeve located below the rotating cylinder, so that the repair fluid in the liquid storage cylinder can flow out from the arc-shaped notch into the limiting sleeve. A connecting rope is connected to the end of the loosening rod near the liquid storage cylinder. A rotating shaft is rotatably installed inside the rotating cylinder through a torsion spring. One end of the connecting rope is fixed to the rotating shaft.

[0008] Furthermore, the rotating drum has a cavity, and the limiting sleeve passes through the cavity. The limiting sleeve has a threaded section, and a gear is threadedly connected to the threaded section. A gear ring that meshes with multiple gears is rotatably installed in the cavity. Rotating the gear ring can cause the gears to rotate, thereby causing the limiting sleeve to slide.

[0009] Furthermore, multiple rotating shafts are rotatably installed inside the cavity at positions corresponding to the loosening rod, with the multiple rotating shafts arranged around the loosening rod so that multiple connecting ropes, each connected to a rotating shaft, are arranged around the limiting sleeve.

[0010] Furthermore, the collar is provided with multiple placement slots that correspond one-to-one with the loosening rods, and the loosening rods are all located in the placement slots after rotating in any direction.

[0011] Furthermore, the liquid storage tank is connected to a pressure pump via a pipeline.

[0012] Furthermore, the limiting sleeve is keyed to the limiting hole.

[0013] The beneficial effects of this invention are as follows:

[0014] This invention uses a ball joint to install a loosening rod. When the loosening rod encounters a large, hard, invisible rock in the riverbed while loosening soft riverbed mud, it can rotate under pressure during continuous rolling injection repair to prevent damage to the front end of the loosening rod due to excessive force. After the loosening rod passes the hard rock, the rotating shaft drives the connecting rope to return to its original position via a torsion spring. By setting a limit sleeve, the loosening rod can be locked or unlocked to prevent rotation when loosening harder soil, ensuring stability during loosening.

[0015] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0017] Figure 1 This is a partial cross-sectional view of the rotating drum according to an embodiment of the present invention;

[0018] Figure 2 Embodiments of the present invention Figure 1 A magnified view of part A in the middle;

[0019] Figure 3 This is a schematic diagram of the structure of the loosening rod during rotation according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0021] The following are labeled in the attached diagram: support frame 1, liquid storage cylinder 2, arc-shaped notch 201, rotating cylinder 3, limiting hole 301, limiting sleeve 302, rotating shaft 303, cavity 304, threaded section 305, gear 306, gear ring 307, collar 4, loosening rod 401, liquid outlet hole 402, locking hole 403, sliding hole 404, connecting rope 405, placement groove 406. Detailed Implementation

[0022] like Figures 1-4As shown, this invention provides an in-situ remediation system for riverbed sediment, comprising: a support frame 1 connected to a moving mechanism; a storage cylinder 2 for storing remediation fluid fixedly installed on the support frame 1; a rotating cylinder 3 rotatably mounted on the storage cylinder 2; multiple collars 4 fixedly mounted side-by-side on the rotating cylinder 3; multiple loosening rods 401 circumferentially ball-jointed on the collars 4 with their axis as the center; each loosening rod 401 has a fluid outlet hole 402 penetrating along its axis; each loosening rod 401 has a locking hole 403 near the end of the storage cylinder 2, the diameter of the locking hole 403 being larger than the diameter of the fluid outlet hole 402; each collar 4 has a sliding hole 404 corresponding to a locking hole 403, the diameter of the sliding hole 404 being larger than the diameter of the locking hole 403; and the rotating cylinder 3 has a sliding hole 404 corresponding to a locking hole 403, the diameter of the sliding hole 404 being larger than the diameter of the locking hole 403. A plurality of limiting holes 301 are provided around the center, each corresponding to a lock hole 403. A limiting sleeve 302 is slidably installed in each limiting hole 301. The limiting sleeve 302 and the limiting hole 301 are connected by a key to limit sliding. Sliding the limiting sleeve 302 can connect or disconnect the limiting sleeve 302 from the lock hole 403 to lock or unlock the loosening rod 401. An arc-shaped notch 201 is provided below the liquid storage cylinder 2. The arc-shaped notch 201 corresponds to the limiting sleeve 302 located below on the rotating cylinder 3, so that the repair fluid in the liquid storage cylinder 2 can flow out from the arc-shaped notch 201 into the limiting sleeve 302. A connecting rope 405 is connected to the end of the loosening rod 401 near the liquid storage cylinder 2. A rotating shaft 303 is rotatably installed in the rotating cylinder 3 through a torsion spring. One end of the connecting rope 405 is fixed to the rotating shaft 303.

[0023] In this scheme, when the moving mechanism drives the support frame 1 and the storage cylinder 2 to move, the rotating cylinder 3 rotates on the riverbed sediment, thereby loosening the soil through the loosening rod 401 on the collar 4. When the lowermost loosening rod 401 is inserted into the sediment, the outlet hole 402 on the lowermost loosening rod 401 corresponds to the arc-shaped notch 201, allowing the repair fluid in the storage cylinder 2 to flow out from the arc-shaped notch 201 into the limiting sleeve 302, and then be discharged from the outlet hole 402 into the sediment. The storage cylinder 2 is connected to a pressure pump through a pipeline to increase the pressure and allow the repair fluid to be discharged quickly. When the sliding limiting sleeve 302 extends into the locking hole 403, the loosening rod 401 is in a locked state. Figure 2 Suitable for loosening soil in hard ground; when the sliding limiting sleeve 302 retracts into the sliding hole 404, the loosening rod 401 is in the unlocked state and can rotate on the collar 4, such as Figure 3It is suitable for riverbed mud with relatively soft soil. When the loosening rod 401 encounters large, hard rocks that are not visible in the riverbed during the loosening process, the loosening rod 401 can rotate under pressure to prevent the front end of the loosening rod 401 from being damaged due to excessive force. After the loosening rod 401 passes through the hard rocks, the rotating shaft 303 drives the connecting rope 405 to return to its original position through the torsion spring. By installing multiple collars 4 side by side on the rotating drum 3, it is possible to pass through scattered rocks, ensuring the rationality of the structure.

[0024] In one embodiment of the present invention, the rotating drum 3 is provided with a cavity 304, and the limiting sleeve 302 is provided through the cavity 304. The limiting sleeve 302 is provided with a threaded section 305, and a gear 306 is threadedly connected to the threaded section 305. A toothed ring 307 that meshes with the gear 306 is rotatably installed in the cavity 304. Rotating the toothed ring 307 can cause the gear 306 to rotate so that the limiting sleeve 302 can slide.

[0025] In this solution, rotating the gear ring 307 can drive multiple gears 306 to rotate synchronously, so that multiple limiting sleeves 302 can slide synchronously, so that the limiting sleeves 302 can connect or disconnect from the locking hole 403, thereby locking or unlocking the loosening rod 401, saving manpower.

[0026] In one embodiment of the present invention, a plurality of rotating shafts 303 are rotatably installed in the cavity 304 corresponding to the loosening rod 401. The plurality of rotating shafts 303 are arranged around the loosening rod 401 so that a plurality of connecting ropes 405, which are respectively connected to the rotating shafts 303, are arranged around the limiting sleeve 302 to enhance the stability of the loosening rod 401 in return to its original position, as well as the stability of the loosening rod 401 when it is not rotating. This is suitable for riverbed mud with relatively soft soil.

[0027] In one embodiment of the present invention, the collar 4 is provided with a plurality of placement grooves 406 corresponding one-to-one with the loosening rod 401, and the loosening rod 401 is located in the placement groove 406 after rotating in any direction.

[0028] In this solution, by setting up a placement trough 406, when the loosening rod 401 encounters a large, hard rock that is not visible in the riverbed during the loosening process, the loosening rod 401 is rotated into the placement trough 406 under force. At this time, it contacts the ground through the outer wall of the collar 4, avoiding the compression of the loosening rod 401 during the rolling of the collar 4, thus reducing damage to the loosening rod 401. Moreover, after the loosening rod 401 rotates, the liquid outlet 402 and the sliding hole 404 are misaligned, so the repair fluid cannot flow out. For the hard rock part, there is no need to inject repair fluid, thus saving repair fluid.

[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. An in-situ remediation system for riverbed sediment, comprising: A support frame connected to a moving mechanism is characterized in that: a reservoir for storing repair fluid is fixedly installed on the support frame; a rotating cylinder is rotatably mounted on the reservoir; multiple collars are fixedly mounted side-by-side on the rotating cylinder; multiple loosening rods are axially ball-jointed on the collars with the collar axis as the center; each loosening rod has a fluid outlet hole extending along its axis; a locking hole is provided near the reservoir end of each loosening rod, the diameter of the locking hole being larger than the diameter of the fluid outlet hole; and the rotating cylinder is circumferentially arranged with its axis as the center. There are multiple limiting holes that correspond one-to-one with the lock holes. Limiting sleeves are slidably installed in the limiting holes. Sliding the limiting sleeves can connect or disconnect them from the lock holes to lock or unlock the loosening rod. An arc-shaped notch is provided below the liquid storage cylinder. The arc-shaped notch corresponds to the limiting sleeve located below the rotating cylinder, so that the repair fluid in the liquid storage cylinder can flow out from the arc-shaped notch into the limiting sleeve. A connecting rope is connected to the end of the loosening rod near the liquid storage cylinder. A rotating shaft is rotatably installed inside the rotating cylinder through a torsion spring. One end of the connecting rope is fixed to the rotating shaft.

2. The in-situ remediation system for riverbed sediments according to claim 1, characterized in that: The rotating drum has a cavity, and the limiting sleeve passes through the cavity. The limiting sleeve has a threaded section, and a gear is threadedly connected to the threaded section. A toothed ring that meshes with multiple gears is rotatably installed in the cavity. Rotating the toothed ring can cause the gears to rotate, thereby causing the limiting sleeve to slide.

3. The in-situ remediation system for riverbed sediments according to claim 2, characterized in that: Multiple rotating shafts are rotatably installed inside the cavity at positions corresponding to the loosening rod. These shafts surround the loosening rod, allowing multiple connecting ropes, each connected to a shaft, to surround the limiting sleeve.

4. The in-situ remediation system for riverbed sediments according to claim 3, characterized in that: The collar is provided with multiple placement slots that correspond one-to-one with the loosening rods, and the loosening rods are located in the placement slots after rotating in any direction.

5. The in-situ remediation system for riverbed sediment according to claim 4, characterized in that: The liquid storage tank is connected to a pressure pump via a pipeline.

6. The in-situ remediation system for riverbed sediment according to claim 5, characterized in that: The limiting sleeve is keyed to the limiting hole.

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