Sludge in-situ solidification treatment device for river regulation construction

Abstract

The utility model discloses a sludge in-situ curing treatment device for river regulation construction, which comprises a main shaft provided with a protective sleeve, a pesticide spraying component arranged at the bottom of the protective sleeve, a plurality of groups of stirring devices arranged on the main shaft, sludge separating plates symmetrically arranged on adjacent stirring blades of the stirring devices, and sludge supporting plates arranged on the sludge separating plates and distributed oppositely. The mud separating plate and the mud supporting plate are distributed in a linear mode in the height direction of the main shaft, a medicine injection space is formed by the mud separating plate and the mud supporting plate, and the medicine spraying assembly is provided with a liquid medicine spray head matched with the medicine injection space. Sludge is divided by the sludge dividing plates welded on the stirring blades in the rotating direction of the stirring blades, then the sludge is supported by the sludge supporting plates, finally, a chemical injection space is formed behind the sludge supporting plates, the sludge is divided into a space at the position, and at the moment, a curing chemical is sprayed to the sludge space from the chemical spray head after passing through the corrugated pipe from the chemical inlet pipe; and the curing agent is sprayed deep in the sludge, so that the agent mixing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of river management technology, and in particular to an in-situ solidification treatment device for sludge used in river remediation construction. Background Technology

[0002] In modern river management projects, in-situ solidification of sludge is a crucial step. With the acceleration of industrialization and urbanization, river pollution has become increasingly severe. Large amounts of sludge containing pollutants such as heavy metals and organic matter accumulate at the bottom of river channels, affecting not only the flood control capacity of the rivers but also causing continuous damage to the aquatic ecological environment.

[0003] Traditional methods of river sludge treatment often require large-scale excavation, transportation, and off-site processing. This method is costly, prone to secondary pollution during transportation, and occupies a large amount of land resources. Therefore, in-situ solidification technology has emerged. It aims to transform sludge into a stable solid form by adding solidifying agents without moving the sludge, thereby reducing the leaching of harmful substances and improving the strength and stability of the sludge for further treatment or utilization.

[0004] While existing sludge in-situ solidification treatment devices for river remediation, such as the one disclosed in CN219259803U, can solve the problem of off-site treatment after large-scale excavation and transportation, a significant problem has emerged in practical applications: when mixing the sludge with solidification agents, the agents struggle to penetrate quickly into the sludge. Sludge typically has a complex composition and structure, containing particles of varying sizes, large amounts of water, and interwoven fibrous materials, with a fine and irregular internal pore structure. When conventional mixing devices operate, relying solely on simple blade rotation and tumbling, the solidification agents mostly remain on the sludge surface and cannot quickly and evenly penetrate into the deeper layers of the sludge. This results in a significant time commitment to prolong the mixing process, hoping for the agent to slowly diffuse inward. This not only greatly reduces construction efficiency, increases equipment energy consumption and labor costs, and prolongs the river remediation period, but also leads to uneven agent penetration and inconsistent solidification effects. Some areas of the treated sludge meet the strength standards, while others remain loose and prone to loss, failing to meet the project's requirements for the overall stability of the solidified sludge. Consequently, it is difficult to achieve the desired river remediation effect, and there remains a risk of environmental pollution in the future.

[0005] In conclusion, it is urgent to develop an in-situ sludge solidification treatment device for river remediation construction that can effectively solve the problem of rapid penetration of solidification agents into the sludge during sludge mixing. Utility Model Content

[0006] The purpose of this invention is to provide an in-situ solidification treatment device for sludge in river remediation construction, which can effectively enable the solidification agent to quickly penetrate into the sludge during sludge mixing.

[0007] This utility model provides an in-situ solidification treatment device for sludge in river remediation construction. It includes a main shaft with a protective sleeve, a spraying component at the bottom of the protective sleeve, multiple sets of stirring devices on the main shaft, mud-dividing plates symmetrically arranged on adjacent stirring blades of the stirring devices, mud-dividing plates with relatively distributed mud-supporting plates, the mud-dividing plates and mud-supporting plates are arranged in a straight line along the height direction of the main shaft, the mud-dividing plates and mud-supporting plates form a chemical injection space, and the spraying component is equipped with a chemical spray nozzle that cooperates with the chemical injection space.

[0008] It is not difficult to see from the above that the sludge in-situ solidification treatment device for river remediation construction provided by this utility model forms a chemical injection space by means of the mud separating plate and mud supporting plate attached to the mixing blade, which allows the chemical spraying nozzle of the spraying component to deliver the solidification agent to the interior of the sludge, thereby improving the mixing effect of the sludge and the solidification agent and effectively improving the construction quality of sludge in-situ solidification.

[0009] Furthermore, the sludge separating plate has a V-shaped cross-section. This pointed head design not only improves the efficiency of sludge separation but, more importantly, minimizes resistance, thereby reducing the load and energy consumption of the main shaft motor. The sludge separating plate can be fixed in various ways, including but not limited to welding to the agitator blades. The plate needs to extend beyond the edge of the agitator blades, with the extension length set as needed. This outward extension of the sludge separating plate at the edge of the agitator blades minimizes obstruction of the vertical chemical injection space by the agitator blades.

[0010] Furthermore, the mud support plate is tangent to the rotation direction of the stirring blades, thereby achieving smoother rotation while reducing corresponding resistance.

[0011] Furthermore, the spraying assembly has a spraying shell, which is a bottom-opening structure composed of a circular top and annular enclosures distributed around the edge of the circular top. Multiple sets of inlet pipes are distributed in annular array on the circular top of the spraying shell. A rotating base plate that can rotate horizontally inside the spraying shell is movably installed at the opening of the spraying shell. Multiple sets of water spray nozzles that cooperate with the inlet pipes are distributed in annular array on the rotating base plate. Each set of water spray nozzles and inlet pipes are connected by a flexible telescopic connecting pipe. The water spray nozzles are located directly above the spraying space. The rotating base plate can rotate with the rotation of the main shaft.

[0012] Furthermore, multiple sets of sliding grooves are paired on the lower surface of the circular top of the spraying shell and the upper surface of the rotating base plate. The sliding grooves are distributed at an incline. A sliding rod that can slide along the sliding groove is movably installed between the two corresponding sets of sliding grooves. A return spring is provided between the end of the sliding rod and the end of the sliding groove. A sliding rod actuating plate that cooperates with the sliding rod is radially installed on the side wall of the main shaft corresponding to the position of the sliding rod. The distance between the far end of the sliding groove and the center of the main shaft is the same as the sum of the length of the sliding rod actuating plate and the diameter of the sliding rod.

[0013] Furthermore, the cross-section of the chute is narrow at the top and wide at the bottom, and anti-detachment plates that fit into the chute are respectively installed at both ends of the slide rod.

[0014] Furthermore, the end of the slide groove where the reset spring is installed is flat, and the slide rod is integrally formed with a stabilizing block at the same horizontal height as the reset spring, with the end of the stabilizing block near the reset spring being flat.

[0015] This device can effectively solve the problem of solidification agents rapidly penetrating into the sludge during sludge mixing, and avoids placing excessive additional load on the main shaft drive motor. Attached Figure Description

[0016] Figure 1 A three-dimensional diagram of an in-situ solidification treatment device for sludge used in river remediation construction.

[0017] Figure 2 A top view of the mixing device in an in-situ sludge solidification treatment system for river remediation construction.

[0018] Figure 3 A three-dimensional diagram of the spraying component in an in-situ sludge solidification treatment device used for river remediation construction.

[0019] Figure 4 A top view of the spraying component in an in-situ sludge solidification treatment device used for river remediation construction. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] This utility model provides an in-situ solidification treatment device for sludge used in river remediation construction (hereinafter referred to as "the device"). See [link to relevant documentation]. Figure 1-3 As shown, the device includes a main shaft 1, stirring blades 2, mud separating plate 3, mud supporting plate 4, injection space 5, protective sleeve 6, spraying shell 7, inlet pipe 8, rotating base plate 9, spray nozzle 10, flexible telescopic connecting pipe 11, slide groove 12, slide rod 13, return spring 14, actuating plate 15, anti-detachment plate 16, and stabilizing block 17.

[0022] See Figure 1The main shaft 1 of the device is connected to a drive motor, which drives the main shaft to rotate. Multiple sets of stirring devices 18 are installed at the lower part of the main shaft 1 to agitate the sludge. Each set of stirring devices has six stirring blades 2. In this embodiment, two sets of stirring devices 18 are arranged along the height of the main shaft, allowing the number to be adjusted as needed. After the stirring blades 2 are inserted into the sludge, the external motor drives the main shaft 1 to rotate, using the stirring blades 2 to agitate the sludge and better mix it with the solidification agent. It is worth mentioning that sludge-dividing plates 3 and sludge-supporting plates 4 are installed on the stirring blades. These plates allow the solidification agent to reach the interior of the sludge effectively, overcoming the problem that traditional agent application mostly only reaches the surface of the sludge. The mud-dividing plates 3 are symmetrically arranged between adjacent mixing blades. The mud-dividing plates 3 and the mud-supporting plates 4 are distributed in a straight line along the height direction of the main shaft. This linear distribution structure facilitates the delivery of the drug to the depths of the sludge with the shortest possible stroke. The mud-dividing plates can be welded and fixed to the mixing blades. To cut through the sludge and reduce the load on the motor, the mud-dividing plates 3 have a V-shaped cross-section. The V-shaped tip easily cuts through the sludge and moves synchronously with the mixing blades. The mud-supporting plates 4 are distributed opposite each other on the inner side of the mud-dividing plates 3. This effectively utilizes the mud-dividing plates 3 and 4 to form the drug injection space 5. Figure 1 and Figure 2 It can be seen that since the mud-distributing plate 3 is a long strip-shaped component distributed along the height direction of the main shaft, its height is roughly the same as the height of the main shaft at the bottom of the spraying assembly.

[0023] In this embodiment, the sludge-dividing plate has a V-shaped cross-section, which efficiently cuts apart the sludge when the agitator blades rotate. The sludge-supporting plate supports the cut sludge, thus forming a stable injection space. This dynamic cutting and supporting process effectively reduces sludge accumulation on the opening side of the injection space. The rotating base plate in the spraying assembly rotates with the main shaft, ensuring that the spray nozzle is always directly above the injection space. As the agitator blades continuously stir to form new injection spaces, the nozzles can promptly spray the agent into the newly formed space, reducing the possibility of sludge blockage due to a stationary space. The injection space is located behind the agitator blades and is formed by the sludge-dividing plate and the sludge-supporting plate. When the agitator blades rotate, the injection space continuously penetrates deeper into the sludge, allowing the agent to be sprayed directly to deeper areas, reducing the possibility of excessive absorption on the surface. The sludge-dividing plate cuts apart the sludge, and the sludge-supporting plate creates the space. After the agent is sprayed, as the agitator blades continue to rotate, the surrounding sludge will backfill into the injection space and mix with the agent. This process of cutting, spraying, and backfilling allows the agent to mix thoroughly with the surrounding sludge in a short time, reducing the possibility of excessive absorption of the agent during its downward movement. This structural design relies on a single direction of rotation to ensure that the sludge separating and supporting plates can effectively cut and support the sludge, forming a stable injection space; therefore, it operates according to a specific direction of rotation.

[0024] In this embodiment, two sets of stirring devices are used. The stirring devices at the same horizontal height have six blades, corresponding to three pairs of mud-dividing plates and their matching mud-supporting plates 4.

[0025] It is worth mentioning that in this embodiment, the mud-supporting plate 4 is tangent to the rotation direction of the stirring blade 2, so that the mud-separating plate 3 and the mud-supporting plate 4 form an arrow structure. An injection space 5 is formed between two adjacent sets of mud-supporting plates 4. When the stirring blade 2 stirs the sludge, the mud-separating plate 3 separates the sludge, and the mud-supporting plate 4 supports the sludge, so that the sludge forms a space at the injection space 5. At this time, the solidifying agent is directly sprayed into the sludge cavity at the injection space 5 and mixed into the depth of the sludge. After rotation, the sludge merges and mixes the agent into different layers of sludge, increasing the solidification effect.

[0026] In this embodiment, the main shaft is provided with a protective sleeve 6, and the bottom of the protective sleeve 6 is provided with a spraying assembly. The spraying assembly has a spraying housing 7, which has a circular top and an annular side enclosure distributed along the edge of the circular top. A rotating base plate 9 that can rotate horizontally inside the spraying housing 7 is movably installed in the bottom open portion of the spraying housing 7. The inner center hole of the rotating base plate 9 allows the main shaft to pass through the rotating base plate 9. Multiple sets of inlet pipes 8 are evenly distributed at intervals on the circular top of the spraying housing. For example, in this embodiment, six sets of inlet pipes are distributed in a circular array on the circular top of the spraying housing. Multiple sets of liquid spray nozzles 9 that cooperate with the inlet pipes are evenly distributed at intervals on the rotating base plate 9. The liquid spray nozzles 9 are located directly above the injection space 5 to facilitate spraying external liquid medicine into the injection space 5. Each set of liquid spray nozzles and inlet pipes are connected by a flexible telescopic connecting pipe 11, which includes, but is not limited to, a corrugated pipe. In this way, the rotating base plate 9 can rotate along with the main shaft, allowing the mixing blade 2 and the mud separating plate 3 to spray the medicine through the sludge holes during the mixing process that forms the injection space 5.

[0027] The lower surface of the circular top of the spraying casing and the top of the rotating base plate 9 are provided with paired sliding grooves 12 to facilitate the sliding of the sliding rod 13. See [reference needed]. Figure 3-4As shown, the slides 12 are inclined on their respective distribution surfaces. Taking the rotating base plate 9 as an example, the angle between the central axis O2 of the slide 12 and the vertical central axis O1 of the rotating base plate 9 is α, where α is an acute angle, for example, 36°. The slides 12 on the rotating base plate 9 are arranged in a circular array around the center of the rotating base plate. A sliding rod 13 is movably installed between the two pairs of slides 12 that correspond to each other. The end of the sliding rod 13 is fixedly connected to the end of the slide 12 through a return spring 14, so that the sliding rod 13 can overcome the tension of the return spring and move along the slide under the action of external force. After the external force disappears, it is reset along the slide 12 by the tension of the return spring. A deflector plate 15 is radially arranged on the side wall of the main shaft 1 corresponding to the position of the slide rod 13. In this embodiment, three deflector plates are distributed accordingly. The distance T2 between the far end of the slide groove 12 and the center of the main shaft is the same as the sum of the length T2 of the deflector plate and the diameter D of the slide rod (T2 = T2 + D). Thus, after the wave rod 15 pushes the slide rod 13 to the far end of the slide groove 12, the deflector plate 15 can pass over the slide rod 13 and continue to move forward. The slide rod is reset by the tension of the return spring 14 and waits for the next push of the deflector plate 15. In this process, the deflector plate 15 indirectly drives the rotating base plate 9 to rotate by pushing the slide rod 13 and the cooperation of the return spring 14, and forms a periodic swing. This achieves the effect of following the injection space 5 for a distance to spray the medicine into the sludge, and then resetting to spray the medicine onto the sludge, further enhancing the mixing effect of the medicine and the sludge.

[0028] It is worth mentioning that the cross-section of the slide groove 12 is narrow at the top and wide at the bottom. Anti-detachment plates 16 that fit into the slide groove are provided at both ends of the slide rod 13, preventing the slide rod 13 from detaching from the slide groove 12 and thus supporting the spraying housing 7 and the rotating base plate 9. The end of the slide groove where the return spring is installed is flat. A stabilizing block 17 is integrally formed at the same horizontal height as the return spring on the slide rod 13. The end of the stabilizing block 17 closest to the return spring is also flat. These two flat surfaces facilitate the installation of the return spring, and the stabilizing block also restricts the rotation of the slide rod 13 within the slide groove, preventing the return spring from getting tangled on the slide rod 13 and damaging it.

[0029] The working principle of the in-situ sludge solidification treatment device for river remediation construction provided by this utility model is as follows: When in use, the drive motor drives the main shaft 1 to rotate, and the chemical pump pumps the chemical solution to the inlet pipe 8. The rotation of the main shaft 1 drives the stirring blade 2 to rotate, so that the mud separating plate 3 welded on the stirring blade 2 cuts the sludge along the rotation direction of the stirring blade 2. Then, it is opened up by the mud supporting plate 4, and finally, a chemical injection space 5 is formed behind the mud supporting plate 4. The sludge is cut into a space here. At this time, the solidification agent is sprayed from the inlet pipe 8 through the corrugated pipe and then from the chemical spray nozzle 10 into the sludge space, sprinkling the solidification agent deep into the sludge and increasing the mixing effect of the agent.

[0030] Simultaneously, the rotating main shaft 1 drives the actuating plate 15 to rotate within the spraying housing 7. When the actuating plate 15 comes into contact with the sliding rod 13, it squeezes the sliding rod 13, causing the sliding rod 13 to pull the return spring 14. The return spring 14 pulls the rotating base plate 9, which in turn drives the chemical spray nozzle 10 on the rotating base plate 9 to follow the injection space 5 formed after being stirred by the stirring blade 2, so that the solidified agent is sprayed. When the actuating plate 15 further pushes the sliding rod 13, the sliding rod 13 moves to the farthest end of the chute 12. At this time, the sliding rod 13 passes over the actuating plate 15 and is pulled back by the return spring 14. At the same time, the rotating base plate 9 resets within the spraying housing 7, driving the chemical spray nozzle 10 to reset, spraying the liquid onto the uncut sludge, so that the solidified agent is mixed from top to bottom, further increasing the mixing effect of the agent.

[0031] In summary, the mud-dividing plate welded on the mixing blade cuts through the sludge along the direction of the mixing blade's rotation, and then is opened up by the mud-supporting plate, finally forming a chemical injection space behind the mud-supporting plate. The sludge is cut into a space here, and at this time, the solidifying agent is sprayed from the inlet pipe through the corrugated pipe and then from the chemical nozzle into the sludge space, sprinkling the solidifying agent deep into the sludge, thereby increasing the mixing effect of the agent.

[0032] The description of existing technologies has been omitted from the entire text.

[0033] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A sludge in-situ solidification treatment device for river regulation construction, comprising a main shaft provided with a protective sleeve, the bottom of the protective sleeve being provided with a pesticide spraying assembly, and the main shaft being provided with multiple groups of stirring devices, characterized in that, The adjacent stirring blades of the stirring device are symmetrically provided with a mud separating plate, the mud separating plate is provided with oppositely distributed mud supporting plates, the mud separating plate and the mud supporting plates are distributed in a linear form along the height direction of the main shaft, the mud separating plate and the mud supporting plates form a medicine injection space, and the medicine spraying assembly is provided with a medicine water nozzle matched with the medicine injection space.

2. The sludge in-situ solidification treatment device for river training construction according to Claim 1, characterized by The cross section of the mud separating plate is in a V shape.

3. The sludge in-situ solidification treatment device for river training construction according to claim 1, characterized by The mud supporting plates are tangent to the rotating direction of the stirring blades.

4. The sludge in-situ solidification treatment device for river training construction according to Claim 1, characterized by The medicine spraying assembly has a medicine spraying shell which is a bottom opening structure composed of a circular top and a ring-shaped surrounding part distributed around the edge of the circular top, a plurality of groups of medicine inlet pipes are distributed in a ring shape around the circular top of the medicine spraying shell, a rotating bottom plate which can rotate horizontally in the medicine spraying shell is movably installed at the opening of the medicine spraying shell, a plurality of groups of medicine water nozzles matched with the medicine inlet pipes are distributed in a ring shape around the rotating bottom plate, a flexible expansion connecting pipe is connected between each group of medicine water nozzles and the medicine inlet pipe, the medicine water nozzle is located directly above the medicine injection space, and the rotating bottom plate can rotate following the rotation of the main shaft.

5. The sludge in-situ solidification treatment device for river training construction according to claim 4, characterized by A plurality of groups of sliding grooves are arranged on the lower surface of the circular top of the medicine spraying shell and the upper surface of the rotating bottom plate in a matched mode, the sliding grooves are distributed in an inclined mode, a sliding rod which can slide along the sliding grooves is movably installed between two groups of sliding grooves corresponding in upper and lower positions, a reset spring is arranged between the end of the sliding rod and the end of the sliding groove, a sliding rod actuating plate matched with the sliding rod is radially installed on the side wall of the main shaft corresponding to the position of the sliding rod, and the distance between the distal end of the sliding groove and the center of the main shaft is the same as the sum of the length of the sliding rod actuating plate and the diameter of the sliding rod.

6. The sludge in-situ solidification treatment device for river training construction according to claim 5, characterized by The cross section of the sliding groove is in a structure with a narrow upper part and a wide lower part, and the two ends of the sliding rod are respectively provided with anti-disengagement plates matched with the sliding groove.

7. The sludge in-situ solidification treatment device for river training construction according to claim 5, characterized by The end of the sliding groove where the reset spring is installed is a flat surface, the sliding rod is integrally provided with a stabilizing block at a position corresponding to the same horizontal height of the reset spring, and the end of the stabilizing block close to the reset spring is a flat surface.

8. The sludge in-situ solidification treatment device for river training construction according to claim 1, characterized by The mud separating plate has an outwardly extending portion at the edge of the stirring blade.

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