A water conservancy project river channel sludge cleaning device

Abstract

The utility model relates to the technical field of silt cleaning, in particular to a water conservancy project river and canal silt cleaning device. Including the conveying cylinder, the conveying cylinder side wall is fixed with the position of the one end and is provided with the silt inlet pipe. The utility model discloses, when starting motor drive transmission shaft, the synchronous rotation of the pivot and the reciprocating screw rod, transmission shaft drives the auger blade and the stirring rod rotation, and the silt is transported and is mixed in the direction of silt outlet pipe through the auger blade from the silt inlet pipe, and the reciprocating screw rod drive blade reciprocating moves in the communicating pipe, and the solidified agent powder agglomerate in the upper communicating pipe inside is cut, and the solidified agent after cutting enters the inside of the cylinder and is quantitatively received by the accommodating space formed by the material uniform plate, and with the continuous rotation of the accommodating space to the bottom, the solidified agent falls into the conveying cylinder and the silt in conveying quantitatively and continuously through the lower communicating pipe and mixes, thereby realizing the stirring mixing of silt and solidified agent while conveying silt, and improving the mixing quality.

Description

Technical Field

[0001] This utility model relates to the field of silt removal technology, specifically to a device for removing silt from rivers and canals in water conservancy projects. Background Technology

[0002] Cleaning up river silt is an important task for restoring the ecological function of water bodies and improving flood control capabilities. It mainly includes preliminary survey and scheme formulation, construction preparation, removal of silt using mechanical or hydraulic methods, transportation of silt to treatment points, dewatering and harmless treatment or resource utilization, and finally acceptance of dredging results and restoration of the site.

[0003] In existing technologies, powdered solidifying agents such as lime and cement are added to treat sludge. The purpose is to reduce the water content of the sludge and improve its strength and stability through a series of physicochemical reactions (such as ion exchange, flocculation, and hydration reactions), transforming it from a fluid state into a solid or semi-solid with a certain load-bearing capacity. Ultimately, this makes the treated sludge easier to transport, landfill, or utilize as roadbed filler.

[0004] When adding a solidifying agent to sludge, the existing technology usually adds the solidifying agent to the container storing the sludge and uses a mixing device to mix it. However, this method has a contradiction between efficiency and effectiveness: when the sludge layer is thick, the solidifying agent added in the upper layer is difficult to be effectively stirred to the lower layer, resulting in the lower sludge not being fully mixed with the solidifying agent. At the same time, an excessively thick sludge layer will significantly increase the load on the mixing device and weaken the mixing effect. Conversely, if a thinner sludge layer is used, although it is beneficial to the uniformity of mixing and reduce the pressure on the equipment, the single processing volume is limited, which will reduce the overall processing efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a device for cleaning silt from rivers and canals in water conservancy projects, so as to solve the problems mentioned in the background art above:

[0006] Existing technologies typically involve adding a curing agent to a container storing sludge and mixing it using a stirring device, which presents a trade-off between efficiency and effectiveness.

[0007] To address the above problems, this utility model aims to provide a silt removal device for water conservancy projects, including a conveying cylinder. A silt inlet pipe is fixedly installed on the side wall of the conveying cylinder near one end, and a silt outlet pipe is fixedly installed at the bottom of the conveying cylinder near the other end. A conveying mechanism is installed inside the conveying cylinder to transport the silt entering through the silt inlet pipe towards the silt outlet pipe. A dosing mechanism is installed at the top of the conveying cylinder near the silt inlet pipe to add a solidifying agent to the silt being conveyed in the conveying cylinder. The dosing mechanism includes a cylinder with connecting pipes fixedly installed at its top and bottom. The lower end of the lower connecting pipe is fixedly connected to the top of the conveying cylinder, and the upper end of the upper connecting pipe is fixedly connected to a storage tank. The cylinder is equipped with a material equalization mechanism for quantitatively conveying the curing agent into the conveying cylinder, and the upper connecting pipe is equipped with a material crushing mechanism for cutting the curing agent. When the conveying mechanism conveys sludge, the conveying mechanism drives the material equalization mechanism, which in turn drives the material crushing mechanism, so that the material equalization mechanism quantitatively conveys the curing agent cut by the material crushing mechanism into the conveying cylinder.

[0008] As a further improvement to this technical solution, the conveying mechanism includes a drive shaft coaxially rotatably disposed inside the conveying cylinder, with auger blades fixedly connected to the circumferential sidewall of the drive shaft, and a plurality of stirring rods fixedly connected to the circumferential sidewall of the drive shaft, the stirring rods being located in the gaps between the auger blades.

[0009] As a further improvement to this technical solution, the conveying mechanism also includes a motor fixedly mounted on one side of the conveying cylinder by a bracket, and one end of the transmission shaft rotatably passes through one side of the conveying cylinder and is fixedly connected to the output shaft of the motor by a coupling.

[0010] As a further improvement to this technical solution, the dosing mechanism includes a rotating shaft coaxially rotatably disposed inside the cylinder. Several material equalization plates are fixedly arranged in an annular array on the circumferential sidewall of the rotating shaft. Each material equalization plate consists of a base plate fixed on the rotating shaft and a scraper fixed on the other side of the base plate. The scraper and the base plate together form an L-shaped structure, and the blade of the scraper contacts the inner circumferential wall of the cylinder.

[0011] As a further improvement to this technical solution, one end of the rotating shaft rotates through one side of the cylinder and is coaxially and fixedly connected to a driven pulley via a spline. The output shaft of the motor is coaxially and fixedly connected to a driving pulley via a spline. The driving pulley and the driven pulley are connected by the same synchronous belt.

[0012] As a further improvement to this technical solution, the crushing mechanism includes an assembly frame that is horizontally slidably disposed inside the connecting pipe. A blade is horizontally fixedly installed inside the assembly frame, and both ends of the assembly frame slide through the side wall of the connecting pipe and extend outward.

[0013] As a further improvement to this technical solution, the crushing mechanism also includes a mounting frame fixedly installed on the side of the cylinder away from the driven pulley. A moving block is horizontally slidably arranged inside the mounting frame, and the moving block is fixedly connected to one end of the assembly frame through a connecting rod.

[0014] As a further improvement to this technical solution, the end of the rotating shaft away from the driven pulley is coaxially and fixedly connected to a reciprocating screw via a coupling, and the moving block is threadedly connected to the reciprocating screw.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. The silt removal device for river channels in this water conservancy project, when the starting motor drives the transmission shaft, rotating shaft and reciprocating screw to rotate synchronously, the transmission shaft drives the auger blades and stirring rod to rotate. The auger blades transport and mix the silt from the inlet pipe to the outlet pipe. At the same time, the reciprocating screw drives the blades to move back and forth in the connecting pipe, cutting up the solidifying agent powder clumps inside the upper connecting pipe. The chopped solidifying agent enters the cylinder and is quantitatively received by the receiving space formed by the uniform material plate. As the receiving space continues to rotate to the bottom, the solidifying agent quantitatively and continuously falls into the conveying cylinder through the lower connecting pipe to mix with the silt being transported. This achieves the mixing of silt and solidifying agent while transporting silt, thus improving the mixing quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is one of the partial structural schematic diagrams of this utility model;

[0020] Figure 4 This is a cross-sectional view of a portion of the structure of this utility model;

[0021] Figure 5 This is a second schematic diagram of a partial structure of this utility model;

[0022] Figure 6 This is a partial structural diagram of the crushing mechanism of this utility model.

[0023] The meanings of the labels in the diagram are as follows:

[0024] 1. Conveying cylinder; 11. Mud inlet pipe; 12. Mud outlet pipe;

[0025] 2. Dosing mechanism; 21. Cylinder; 22. Connecting pipe; 23. Rotating shaft; 24. Driven pulley; 241. Synchronous belt; 25. Distribution plate;

[0026] 26. Crushing mechanism; 261. Assembly frame; 262. Blade; 263. Mounting bracket; 264. Reciprocating lead screw; 265. Moving block;

[0027] 3. Medicine storage tank; 4. Motor; 5. Drive shaft; 51. Drive pulley; 6. Screwdriver blades; 7. Stirring rod. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] Please see Figure 1 As shown, the purpose of this embodiment is to provide a silt removal device for water conservancy projects, including a conveying cylinder 1. A sludge inlet pipe 11 is fixedly installed on the side wall of the conveying cylinder 1 near one end. The sludge inlet pipe 11 is connected to the interior of the conveying cylinder 1 and is connected to an external sludge pump. The sludge pump injects the sludge to be treated into the conveying cylinder 1 through the sludge inlet pipe 11. A sludge outlet pipe 12 is fixedly installed at the bottom of the conveying cylinder 1 near the other end. The sludge outlet pipe 12 is connected to the interior of the conveying cylinder 1. A conveying mechanism is installed inside the conveying cylinder 1. The conveying mechanism is used to convey the sludge entering the conveying cylinder 1 through the sludge inlet pipe 11 towards the sludge outlet pipe 12. A dosing mechanism 2 is installed at the top of the conveying cylinder 1 near the sludge inlet pipe 11. The dosing mechanism 2 is used to add powdered solidifying agents such as cement and lime to the sludge conveyed in the conveying cylinder 1, so that the solidifying agent is evenly mixed with the sludge to reduce the fluidity of the sludge. The sludge mixed with the solidifying agent is finally discharged through the sludge outlet pipe 12 for subsequent treatment.

[0031] The following details the structure of the conveying mechanism, referring to... Figure 2 and Figure 3 The conveying mechanism includes a drive shaft 5 coaxially rotatably disposed inside the conveying cylinder 1. Screwdriver blades 6 are fixedly connected to the circumferential side wall of the drive shaft 5. The gap between the screwdriver blades 6 and the inner circumferential wall of the conveying cylinder 1 is designed to prevent solid objects in the sludge from passing through. Several stirring rods 7 are fixedly connected to the circumferential side wall of the drive shaft 5. The stirring rods 7 are located in the gaps between the blades of the screwdriver blades 6. The conveying mechanism also includes a motor 4 fixedly mounted on one side of the conveying cylinder 1 by a bracket. One end of the drive shaft 5 rotatably passes through one side of the conveying cylinder 1 and is coaxially fixedly connected to the output shaft of the motor 4 by a coupling.

[0032] When motor 4 starts, its output shaft drives transmission shaft 5 to rotate. The rotating transmission shaft 5 drives auger blades 6 and stirring rod 7 to rotate synchronously. Auger blades 6 are mainly responsible for pushing and conveying sludge towards sludge outlet pipe 12. During this conveying process, sludge will come into contact with the surface of stirring rod 7. The rotating stirring rod 7 stirs the sludge and solidifying agent, effectively promoting the mixing of the two, thereby improving the mixing quality. Finally, the sludge mixed with solidifying agent is discharged through sludge outlet pipe 12.

[0033] The structure of the dosing mechanism 2 is detailed below, with reference to... Figure 4 The dosing mechanism 2 includes a cylinder 21, with connecting pipes 22 fixedly installed at both the top and bottom. The lower end of the lower connecting pipe 22 is fixedly connected to the top of the conveying cylinder 1, and the connecting pipe 22 communicates with the interior of the conveying cylinder 1. The upper end of the upper connecting pipe 22 is fixedly connected to a storage tank 3, and the connecting pipe 22 communicates with the interior of the storage tank 3. The storage tank 3 contains powdered hardeners such as cement and lime. The cylinder 21 is equipped with a material equalization mechanism for quantitatively conveying the hardener into the conveying cylinder 1. The dosing mechanism 2 includes a rotating shaft 23 coaxially rotatably installed inside the cylinder 21. A number of uniform material plates 25 are fixedly arranged in a ring array on the circumferential sidewall. Each uniform material plate 25 consists of a base plate fixed on a rotating shaft 23 and a scraper fixed on the other side of the base plate. The scraper and the base plate together form an L-shaped structure, and the blade of the scraper contacts the inner circumferential wall of the cylinder 21 to ensure that there is no gap between the uniform material plate 25 and the cylinder wall for the curing agent to pass through. One end of the rotating shaft 23 rotates through one side of the cylinder 21 and is coaxially fixedly connected to a driven pulley 24 via a spline. The output shaft of the motor 4 is coaxially fixedly connected to a driving pulley 51 via a spline. The driving pulley 51 and the driven pulley 24 are connected by the same synchronous belt 241.

[0034] When motor 4 starts, its output shaft drives the drive pulley 51 to rotate. The drive pulley 51 drives the driven pulley 24 and the rotating shaft 23 to rotate together via the synchronous belt 241. The rotating shaft 23 drives several material equalizing plates 25 on it to rotate synchronously. Two adjacent material equalizing plates 25 form equal-sized receiving spaces between themselves and the inner wall of the cylinder 21 (because the material equalizing plates 25 are arranged in a ring and the spacing is equal). When any receiving space rotates to the top of the rotating shaft 23, its position is connected to the upper connecting pipe 22. The curing agent in the storage tank 3 falls into this space under the action of gravity. Then, when this receiving space rotates to the bottom of the rotating shaft 23, the curing agent inside it falls into the conveying cylinder 1 under the action of gravity through the lower connecting pipe 22 and mixes with the sludge inside the conveying cylinder 1. Since all the receiving spaces have the same volume, as several receiving spaces continue to rotate, the curing agent in the storage tank 3 can be quantitatively and continuously conveyed to the conveying cylinder 1, thereby improving the mixing quality of the curing agent and the sludge.

[0035] When the curing agent inside the storage tank 3 is not used up and is idle for a long time, the motor 4 is in the off state, and the rotating shaft 23 and several material distribution plates 25 remain stationary, allowing the curing agent to remain stationary inside the storage tank 3 and the upper connecting pipe 22. At this time, because the upper connecting pipe 22 is close to the conveying cylinder 1, the sludge remaining inside the conveying cylinder 1 will evaporate and generate moisture. Since it is impossible to completely avoid moisture between the material distribution plates 25 and the side walls of the cylinder 21, the moisture will enter the interior of the connecting pipe 22 along the material distribution plates 25 and the cylinder 21. This causes the curing agent inside the connecting pipe 22 to come into contact with moisture and clump together. When the two equalizing plates 25 rotate, the clump of curing agent can be removed from the equalizing plates 25 by centrifugal force. However, the clump of curing agent inside the connecting pipe 22 can easily block the connecting pipe 22. This will cause the clump of curing agent to block the curing agent in the storage tank 3 from falling when curing agent is added into the conveying cylinder 1. At this time, the curing agent cannot smoothly enter the interior of the conveying cylinder 1 from the connecting pipe 22.

[0036] To solve this problem, a material-crushing mechanism 26 for cutting the curing agent is installed inside the upper connecting pipe 22. When the conveying mechanism transports sludge, the conveying mechanism drives the material-leveling mechanism, which in turn drives the material-crushing mechanism 26. The material-crushing mechanism 26 cuts off the curing agent that has clumped at the upper end of the connecting pipe 22, so that the material-leveling mechanism can transport the curing agent cut by the material-crushing mechanism 26 into the inside of the conveying cylinder 1, thereby ensuring the smooth mixing of the curing agent and the sludge.

[0037] The structure of the crushing mechanism 26 is detailed below, referring to... Figure 5 and Figure 6 The crushing mechanism 26 includes an assembly frame 261 that is horizontally slidably disposed inside the connecting pipe 22. A blade 262 is horizontally fixedly installed inside the assembly frame 261. The blade 262 has a double-edged structure, and both ends of the assembly frame 261 slide through the side wall of the connecting pipe 22 and extend outward. The crushing mechanism 26 also includes a mounting bracket 263 fixedly installed on the side of the cylinder 21 away from the driven pulley 24. A moving block 265 is horizontally slidably disposed inside the mounting bracket 263. A slider is fixedly disposed on both sides of the moving block 265. A groove is opened on the side wall of the mounting bracket 263 at the position corresponding to the two sliders. The slider is slidably disposed in the corresponding groove. Through the cooperation of the slider and the groove, the moving block 265 is constrained to move only horizontally. The moving block 265 is fixedly connected to one end of the assembly frame 261 through a connecting rod. A reciprocating screw 264 is coaxially fixedly connected to the end of the rotating shaft 23 away from the driven pulley 24 through a coupling. The moving block 265 is threadedly connected to the reciprocating screw 264.

[0038] When motor 4 drives shaft 23 to rotate, shaft 23 drives reciprocating screw 264 to rotate synchronously. Through the threaded connection between reciprocating screw 264 and moving block 265, moving block 265 reciprocates along the axis of reciprocating screw 264. Moving block 265, via connecting rod, drives assembly frame 261 and blade 262 to reciprocate synchronously. The reciprocating blade 262 moves from one side to the other inside connecting pipe 22. During this process, blade 262 cuts up the clumped curing agent. Simultaneously, shaft 264... 3 drives several material distribution plates 25 to rotate synchronously. The scrapers on the material distribution plates 25 continuously cut the curing agent at the bottom of the upper connecting pipe 22. Together with the reciprocating blades 262, they cut the clumped curing agent, thereby ensuring that the material inside the storage tank 3 can smoothly enter the conveying cylinder 1. At the same time, after the clumped curing agent in the connecting pipe 22 is cut by the blades 262, the clumped curing agent will slide downward due to gravity. At this time, the rotating material distribution plates 25 drive the scrapers to scrape the bottom of the clumped curing agent.

[0039] It should be emphasized here that if the curing agent clumped in the connecting pipe 22 does not fall during the process of the material distribution plate 25 rotating to convey the curing agent, the worker can use a tool to tap the side wall of the connecting pipe 22 to make the curing agent adhering to the connecting pipe 22 fall down.

[0040] When this device is in use, the starter motor 4 drives the transmission shaft 5, the rotating shaft 23, and the reciprocating screw 264 to rotate synchronously. The transmission shaft 5 drives the auger blades 6 and the stirring rod 7 to rotate. The auger blades 6 transport and mix the sludge from the sludge inlet pipe 11 to the sludge outlet pipe 12. At the same time, the reciprocating screw 264 drives the blades 262 to move back and forth in the connecting pipe 22, cutting off the clumps of curing agent powder inside the upper connecting pipe 22. The chopped curing agent enters the cylinder 21 and is quantitatively received by the receiving space formed by the uniform material plate 25. At the same time, the rotating uniform material plate 25 rotates to the position connected to the connecting pipe 22. The rotating uniform material plate 25 drives the clumps of curing agent to contact the position where the connecting pipe 22 is connected to the cylinder 21, which can also crush the clumps of curing agent. Then, the uniform material plate 25 drives the curing agent to continue rotating with the receiving space to the bottom. The curing agent falls quantitatively and continuously into the conveying cylinder 1 through the lower connecting pipe 22 and mixes with the sludge being transported, ultimately improving the mixing quality. The mixed sludge is discharged from the sludge outlet pipe 12.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for cleaning silt from rivers and canals in water conservancy projects, comprising a conveying cylinder (1), characterized in that: A mud inlet pipe (11) is fixedly installed on the side wall of the conveying cylinder (1) near one end, and a mud outlet pipe (12) is fixedly installed on the bottom of the conveying cylinder (1) near the other end. A conveying mechanism is provided inside the conveying cylinder (1). The conveying mechanism is used to convey the sludge entering the conveying cylinder (1) through the mud inlet pipe (11) towards the mud outlet pipe (12). A dosing mechanism (2) is provided on the top of the conveying cylinder (1) near the mud inlet pipe (11). The dosing mechanism (2) is used to add a solidifying agent to the sludge conveyed in the conveying cylinder (1). The dosing mechanism (2) includes a cylinder (21). The top of the cylinder (21) Both the bottom and the top are fixedly provided with connecting pipes (22), wherein the lower end of the lower connecting pipe (22) is fixedly connected to the top of the conveying cylinder (1), and the upper end of the upper connecting pipe (22) is fixedly connected to a storage tank (3). The inside of the cylinder (21) is provided with a material equalization mechanism for quantitatively conveying the curing agent into the conveying cylinder (1), and the inside of the upper connecting pipe (22) is provided with a material crushing mechanism (26) for cutting the curing agent. When the conveying mechanism conveys sludge, the conveying mechanism drives the material equalization mechanism, and the material equalization mechanism drives the material crushing mechanism (26), so that the material equalization mechanism quantitatively conveys the curing agent cut by the material crushing mechanism (26) into the inside of the conveying cylinder (1).

2. The silt removal device for water conservancy projects and canals according to claim 1, characterized in that: The conveying mechanism includes a drive shaft (5) coaxially rotatably disposed inside the conveying cylinder (1). The circumferential sidewall of the drive shaft (5) is fixedly connected with auger blades (6), and a plurality of stirring rods (7) are fixedly connected to the circumferential sidewall of the drive shaft (5). The stirring rods (7) are located in the gap between the blades of the auger blades (6).

3. The silt removal device for water conservancy projects and canals according to claim 2, characterized in that: The conveying mechanism also includes a motor (4) fixedly installed on one side of the conveying cylinder (1) by a bracket. One end of the transmission shaft (5) rotates through one side of the conveying cylinder (1) and is fixedly connected to the output shaft of the motor (4) through a coupling.

4. The silt removal device for water conservancy projects and canals according to claim 3, characterized in that: The dosing mechanism (2) includes a rotating shaft (23) coaxially rotatably disposed inside the cylinder (21). Several material equalization plates (25) are fixedly arranged in an annular array on the circumferential sidewall of the rotating shaft (23). The material equalization plate (25) consists of a base plate fixed on the rotating shaft (23) and a scraper fixed on the other side of the base plate. The scraper and the base plate together form an L-shaped structure, and the blade of the scraper contacts the inner circumferential wall of the cylinder (21).

5. The silt removal device for water conservancy projects and canals according to claim 4, characterized in that: One end of the rotating shaft (23) rotates through one side of the cylinder (21) and is coaxially fixedly connected to a driven pulley (24) via a spline. The output shaft of the motor (4) is coaxially fixedly connected to a driving pulley (51) via a spline. The driving pulley (51) and the driven pulley (24) are connected by the same synchronous belt (241).

6. The silt removal device for water conservancy projects and canals according to claim 5, characterized in that: The crushing mechanism (26) includes an assembly frame (261) that is horizontally slidably disposed inside the connecting pipe (22). A blade (262) is horizontally fixedly installed inside the assembly frame (261), and both ends of the assembly frame (261) slide through the side wall of the connecting pipe (22) and extend outward.

7. The silt removal device for water conservancy projects and canals according to claim 6, characterized in that: The crushing mechanism (26) also includes a mounting bracket (263) fixedly installed on the side of the cylinder (21) away from the driven pulley (24). A moving block (265) is horizontally slidably arranged inside the mounting bracket (263). The moving block (265) is fixedly connected to one end of the assembly frame (261) through a connecting rod.

8. The silt removal device for water conservancy projects and canals according to claim 7, characterized in that: The end of the rotating shaft (23) away from the driven pulley (24) is coaxially fixedly connected to a reciprocating screw (264) via a coupling, and the moving block (265) is threadedly connected to the reciprocating screw (264).

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