Water conservancy project river channel dredging sludge screening pretreatment system and treatment process

Abstract

The invention discloses a hydraulic engineering riverway desilting sludge screening pretreatment system and a treatment process, and relates to the technical field of riverway desilting, the hydraulic engineering riverway desilting sludge screening pretreatment system comprises a treatment frame, a conveying module and a sludge treatment module, and the conveying module and the sludge treatment module are both mounted in the treatment frame; the conveying module is used for conveying and classifying sludge in a water conservancy project, then the conveyed sludge is treated through the sludge treatment module, and the sludge treatment module has the advantages that internal teeth are driven to move through a tooth cylinder, and then a first gear and a second gear are driven to rotate; furthermore, the first stirring rod and the second stirring rod have different rotating speeds, a coarse filter screen of the first treatment barrel is used for filtering sludge and part of water, and a fine filter screen of the second treatment barrel is used for treating the water; therefore, the first treatment cylinder and the second treatment cylinder have a better treatment effect on the sludge with different fineness degrees.

Description

Technical Field

[0001] The invention relates to the technical field of river channel desilting, and in particular to a sludge screening pretreatment system and treatment process for desilting a river channel of a water conservancy project. Background Art

[0002] With the development of economy and the acceleration of urbanization, the ecological environment of rivers is facing tremendous pressure. The problem of river siltation is becoming more and more serious, which not only affects the flood discharge capacity of rivers, but also destroys the water ecological balance. In water conservancy projects, river dredging has become an important measure to improve the condition of rivers. However, the large amount of sludge produced by dredging is complex, containing various impurities, organic matter, heavy metals, etc. If it is directly discharged or piled up without proper treatment, it will cause serious pollution to the environment. The traditional dredging sludge treatment process is often simple and extensive, and the treatment effect is not good. In order to achieve effective utilization of resources and environmental protection, a scientific and efficient river dredging sludge screening pretreatment system and treatment process are needed; However, when pre-treating the sludge, it is inconvenient to classify, stir and dehydrate the sludge of different finenesses, which affects the subsequent treatment process of the sludge. Therefore, we propose a sludge screening pre-treatment system and treatment process for river desilting in water conservancy projects. Summary of the invention

[0003] The purpose of the present invention is to provide a water conservancy project river channel dredging sludge screening pretreatment system and treatment process.

[0004] In order to solve the problems raised in the above background technology, the present invention provides the following technical solutions: a water conservancy project river channel desilting sludge screening pretreatment system, comprising a processing frame, a conveying module and a sludge processing module, the conveying module and the sludge processing module are both installed inside the processing frame, the conveying module is used to transport and classify the sludge in the water conservancy project, and then the transported sludge is processed by the sludge processing module, characterized in that the sludge processing module comprises: A first treatment cylinder, wherein a coarse filtering hole is provided at the bottom of the inner wall of the first treatment cylinder; A second treatment cylinder, the second treatment cylinder is located directly below the first treatment cylinder, and the inner wall of the second treatment cylinder is provided with fine filtering holes; A stirring mechanism, the stirring mechanism is used to stir the sludge in the first treatment cylinder and the second treatment cylinder, so that the sludge in the first treatment cylinder falls from the coarse filtering hole into the interior of the second treatment cylinder; The reagent adding mechanism is respectively arranged above one side of the first treatment cylinder and the second treatment cylinder, and is used to add flocculants to the first treatment cylinder and the second treatment cylinder, and to stir the sludge and flocculants in the first treatment cylinder and the second treatment cylinder through the stirring mechanism.

[0005] As a further solution of the present invention: the stirring mechanism includes a servo motor and a first stirring rod, the top surface of the processing frame is detachably mounted with a positioning plate, the front side of the positioning plate is connected to the back side of the servo motor, the top end of the first stirring rod is fixedly connected to the output end of the servo motor, and the bottom of the inner wall of the first processing cylinder is provided with a groove that matches the bottom end of the first stirring rod.

[0006] As a further solution of the present invention: the bottom end of the first stirring rod is fixedly connected to a gear cylinder, the inner wall of the gear cylinder is meshed with three first gears, the three first gears are meshed with second gears on one side close to each other, a second stirring rod is fixedly connected to the axis of the second gear, and the bottom end of the second stirring rod is rotatably connected to the inner wall of the second processing cylinder.

[0007] As a further solution of the present invention: a limiting plate is detachably installed at the center of the bottom surface of the first processing cylinder, the inner wall of the limiting plate is provided with a positioning groove matching the second stirring rod, three positioning rods are fixedly connected to the top surface of the limiting plate, and the axis of the first gear is provided with a limiting groove matching the positioning rod.

[0008] As a further solution of the present invention: the conveying module includes a first conveyor belt and a second conveyor belt, a plurality of screening holes are opened on the outer side of the first conveyor belt, a scraper is arranged on the top of the processing frame, and the bottom of the scraper is in contact with the first conveyor belt, a first guide plate is arranged on the top surface of the first processing cylinder, and the first guide plate extends to the bottom of the front end of the first conveyor belt, the second conveyor belt is located directly below the first conveyor belt, and the second conveyor belt is at a horizontal angle, a second guide plate is arranged on the top surface of the second processing cylinder, and the rear of the second guide plate is located below the front end of the second conveyor belt.

[0009] As a further solution of the present invention: a water tank is detachably mounted on the top of the processing rack, a plurality of water outlet pipes are fixedly connected to the bottom of the water tank, and the water outlet pipes are located above the first conveyor belt.

[0010] As a further solution of the present invention: slag removal plates are arranged on the top of both sides of the processing frame, the slag removal plates and the first conveyor belt are inclined, and the front end horizontal plane of the slag removal plates and the first conveyor belt is higher than the rear end horizontal plane, the top surface of the slag removal plate is provided with a screen, and spray heads are opened on both sides of the water tank, and the spray heads are located at the front end top of the slag removal plate.

[0011] As a further solution of the present invention: conveying plates are detachably installed on both sides of the processing frame, the conveying plates are located on both sides of the second conveyor belt, the front end of the conveying plates extends to the top surface of the second processing cylinder, an auger is arranged on the top of the conveying plate, and a slag discharge port is opened on the side of the conveying plate.

[0012] In addition, the present invention also provides a water conservancy project river channel dredging sludge screening pretreatment process, the sludge screening pretreatment process has the following specific steps: Step 1: Place the sludge in the river channel of the water conservancy project on the first conveyor belt, and then use the first conveyor belt to transport the sludge, separate the transported sludge and impurities through the screening holes of the first conveyor belt, and then move the impurities on the first conveyor belt to the slag removal plate through the scraper, and use the slag removal plate to process the sludge in the impurities, and then slide the impurities down along the bottom of the slag removal plate; Step 2: spray the disinfectant from the water outlet pipe and the spray head through the water tank, so that the disinfectant disinfects the impurities on the first conveyor belt and the slag removal plate; Step 3: The impurities in the sludge are processed by the auger, and when the auger rotates, the impurities are transferred out from the slag discharge port, and the sludge with different impurities is transported to different treatment cylinders; Step 4: The first stirring rod is driven to rotate by a servo motor, so that the first stirring rod stirs the sludge in the first treatment cylinder, and the sludge in the first treatment cylinder is screened by a coarse filter hole, so that the screened sludge falls into the second treatment cylinder, and a flocculant is added to the sludge by a reagent adding mechanism while the sludge is being stirred, so that the flocculant can be better mixed with the sludge; Step 5: Through the mutual cooperation of the gear cylinder, the first gear and the second gear, a planetary gear is constructed, so that when the gear cylinder rotates, the second gear can be driven to rotate more quickly.

[0013] By adopting the above technical solution, compared with the prior art, the beneficial effects of the present invention are: 1. The present invention rotates the gear cylinder inside the first treatment cylinder, and then limits the second gear by using a limiting plate, so that when the gear cylinder rotates, the gear cylinder drives the internal teeth to move, and then drives the first gear and the second gear to rotate, so that the first stirring rod and the second stirring rod have different rotation speeds, so that the first stirring rod and the second stirring rod process the sludge in the first treatment cylinder and the second treatment cylinder, and use the coarse filter net of the first treatment cylinder to filter the sludge and part of the water, and use the fine filter net of the second treatment cylinder to process the water, so that the first treatment cylinder and the second treatment cylinder have better processing effects on sludge of different fineness; 2. The present invention stirs the sludge of different viscosities in the first treatment tube and the second treatment tube through a stirring mechanism, and adds flocculants into the first treatment tube and the second treatment tube, thereby facilitating the sludge to be quickly and fully stirred and mixed with the flocculants, so that the pretreatment system quickly dehydrates the sludge; 3. The present invention transfers impurities on the first conveyor belt to the slag removal plate through a scraper, and uses a water outlet pipe to disinfect and clean the impurities on the first conveyor belt, so as to better separate the sludge attached to the impurities, and guides the impurities through the slag removal plate so that the impurities fall out of the processing frame along the slag removal plate, and cleans the slag removal plate through a spray head, while providing power for the impurities to move along the slag removal plate. When the sludge passes through the screen of the slag removal plate, the sludge falls onto the conveying plate, and the conveying plate is used to transfer the sludge to the second processing cylinder, so as to facilitate better filtering effect of the sludge during transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a first stereoscopic schematic diagram in an embodiment of the present invention; Figure 2 A schematic diagram of the connection relationship of the processing racks in an embodiment of the present invention; Figure 3 Schematic diagram of the connection relationship of the conveying plates in the embodiment of the present invention; Figure 4 This is a schematic diagram of an explosion of a stirring mechanism in an embodiment of the present invention; Figure 5 This is a schematic diagram of a water tank in an embodiment of the present invention; Figure 6 It is a first three-dimensional explosion schematic diagram of an embodiment of the present invention; Figure 7 It is a second stereoscopic explosion schematic diagram in an embodiment of the present invention.

[0015] In the figure: 100, processing rack; 1, first processing cylinder; 2, second processing cylinder; 3, stirring mechanism; 31, servo motor; 32, first stirring rod; 33, positioning plate; 34, gear cylinder; 35, first gear; 36, second gear; 37, second stirring rod; 38, limiting plate; 4, first conveyor belt; 41, scraper; 42, first guide plate; 43, water tank; 44, water outlet pipe; 45, slag removal plate; 46, spray head; 5, second conveyor belt; 51, second guide plate; 52, conveying plate; 53, auger. DETAILED DESCRIPTION

[0016] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0017] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] Please see attached Figure 1 -Attached Figure 7The present invention provides a water conservancy project river channel desilting sludge screening pretreatment system, comprising a treatment frame 100, a conveying module and a sludge treatment module, wherein the conveying module and the sludge treatment module are both installed inside the treatment frame 100, the conveying module is used to transport and classify the sludge in the water conservancy project, and then the transported sludge is treated by the sludge treatment module, and the sludge treatment module comprises: A first treatment cylinder 1, wherein a coarse filtering hole is provided at the bottom of the inner wall of the first treatment cylinder 1; The second treatment cylinder 2 is located directly below the first treatment cylinder 1, and the inner wall of the second treatment cylinder 2 is provided with fine filtering holes; A stirring mechanism 3, which is used to stir the sludge in the first treatment barrel 1 and the second treatment barrel 2, so that the sludge in the first treatment barrel 1 falls from the coarse filtering hole into the interior of the second treatment barrel 2; The reagent adding mechanism is respectively arranged above one side of the first treatment tube 1 and the second treatment tube 2, and is used to add flocculants to the first treatment tube 1 and the second treatment tube 2, and to stir the sludge and flocculants in the first treatment tube 1 and the second treatment tube 2 through the stirring mechanism 3.

[0019] In one embodiment of the present invention: the stirring mechanism 3 includes a servo motor 31 and a first stirring rod 32, a positioning plate 33 is detachably installed on the top surface of the processing frame 100, the front side of the positioning plate 33 is connected to the back side of the servo motor 31, the top end of the first stirring rod 32 is fixedly connected to the output end of the servo motor 31, and a groove matching the bottom end of the first stirring rod 32 is provided at the bottom of the inner wall of the first processing cylinder 1.

[0020] In one embodiment of the present invention: the bottom end of the first stirring rod 32 is fixedly connected to a gear cylinder 34, the inner wall of the gear cylinder 34 is meshed with three first gears 35, the three first gears 35 are meshed with second gears 36 on one side close to each other, the second gear 36 is fixedly connected to the axis of the second stirring rod 37, and the bottom end of the second stirring rod 37 is rotatably connected to the inner wall of the second treatment cylinder 2.

[0021] In one embodiment of the present invention: a limiting plate 38 is detachably installed at the center of the bottom surface of the first processing cylinder 1, and a positioning groove matching with the second stirring rod 37 is formed on the inner wall of the limiting plate 38, three positioning rods are fixedly connected to the top surface of the limiting plate 38, and a limiting groove matching with the positioning rod is formed on the axis of the first gear 35.

[0022] In one embodiment of the present invention: the conveying module includes a first conveyor belt 4 and a second conveyor belt 5, a plurality of screening holes are opened on the outer side of the first conveyor belt 4, a scraper 41 is arranged on the top of the processing frame 100, and the bottom of the scraper 41 is in contact with the first conveyor belt 4, a first guide plate 42 is arranged on the top surface of the first processing cylinder 1, and the first guide plate 42 extends to the bottom of the front end of the first conveyor belt 4, the second conveyor belt 5 is located directly below the first conveyor belt 4, and the second conveyor belt 5 is at a horizontal angle, a second guide plate 51 is arranged on the top surface of the second processing cylinder 2, and the rear of the second guide plate 51 is located below the front end of the second conveyor belt 5.

[0023] In one embodiment of the present invention: a water tank 43 is detachably mounted on the top of the processing rack 100 , and a plurality of water outlet pipes 44 are fixedly connected to the bottom of the water tank 43 , and the water outlet pipes 44 are located above the first conveyor belt 4 .

[0024] In one embodiment of the present invention: slag removal plates 45 are provided on the top of both sides of the processing frame 100, the slag removal plates 45 and the first conveyor belt 4 are both inclined, and the front end horizontal plane of the slag removal plates 45 and the first conveyor belt 4 is higher than the rear end horizontal plane, a screen is provided on the top surface of the slag removal plates 45, and spray heads 46 are provided on both sides of the water tank 43, and the spray heads 46 are located at the front end top of the slag removal plates 45.

[0025] In one embodiment of the present invention: conveying plates 52 are detachably installed on both sides of the processing frame 100, the conveying plates 52 are located on both sides of the second conveyor belt 5, the front end of the conveying plates 52 extends to the top surface of the second processing cylinder 2, an auger 53 is arranged on the top of the conveying plate 52, and a slag discharge port is opened on the side of the conveying plate 52.

[0026] The present invention also provides a water conservancy project river channel dredging sludge screening pretreatment process, the sludge screening pretreatment process has the following specific steps: Step 1: Place the sludge in the river channel of the water conservancy project on the first conveyor belt 4, and then use the first conveyor belt 4 to transport the sludge, separate the transported sludge and impurities through the screening holes of the first conveyor belt 4, and then move the impurities on the first conveyor belt 4 to the slag removal plate 45 through the scraper 41, and use the slag removal plate 45 to process the sludge in the impurities, and then slide the impurities down along the bottom of the slag removal plate 45; Step 2: The disinfectant is sprayed out from the water outlet pipe 44 and the spray head 46 through the water tank 43, so that the disinfectant disinfects the impurities on the first conveyor belt 4 and the slag removal plate 45; Step 3: The impurities in the sludge are processed by the auger 53, and when the auger 53 rotates, the impurities are transferred out from the slag discharge port, and the sludge with different impurities is transported to different processing cylinders; Step 4: The servo motor 31 drives the first stirring rod 32 to rotate, so that the first stirring rod 32 stirs the sludge in the first treatment tube 1, and the coarse filter hole is used to screen the sludge in the first treatment tube 1, so that the screened sludge falls into the second treatment tube 2, and the agent adding mechanism is used to add flocculant to the sludge when the sludge is stirred, so that the flocculant can be better mixed with the sludge; Step 5: The gear cylinder 34, the first gear 35 and the second gear 36 cooperate with each other to form a planetary gear, so that the gear cylinder 34 can drive the second gear 36 to rotate more quickly when rotating.

[0027] Example 1, please refer to the attached Figure 1 -Attached Figure 7 The first guide plate 42 and the second guide plate 51 facilitate the transportation of the sludge on the first conveyor belt 4 and the second conveyor belt 5, and guide the sludge to the first treatment cylinder 1 and the second treatment cylinder 2 respectively, thereby preventing the sludge from falling into the corresponding treatment cylinders.

[0028] Example 2, please refer to the attached Figure 1 -Attached Figure 7 The spray head 46 is located above the front end of the slag removal plate 45. When there are impurities on the slag removal plate 45, the spray head 46 sprays the top of the slag removal plate 45, so that the disinfectant flows from the top to the bottom of the slag removal plate 45, providing a certain power to the impurities on the slag removal plate 45, thereby improving the efficiency of removing mixed sludge in the magazine.

[0029] Example 3, please refer to the attached Figure 1 -Attached Figure 7 The impurities on the top of the conveying plate 52 are restricted by the auger 53 to prevent the impurities from falling onto the conveying plate 52 , and the impurities on the conveying plate 52 are discharged along the slag discharge port by rotating the auger 53 .

[0030] Specifically, the gear cylinder 34 is rotated inside the first treatment cylinder 1, and then the second gear 36 is restricted by the limiting plate 38, so that when the gear cylinder 34 rotates, the gear cylinder 34 drives the internal teeth to move, and then drives the first gear 35 and the second gear 36 to rotate, so that the first stirring rod 32 and the second stirring rod 37 have different rotation speeds, so that the first stirring rod 32 and the second stirring rod 37 process the sludge in the first treatment cylinder 1 and the second treatment cylinder 2, and use the coarse filter screen of the first treatment cylinder 1 to filter the sludge and part of the water, and use the fine filter screen of the second treatment cylinder 2 to process the water, so that the first treatment cylinder 1 and the second treatment cylinder 2 can have better treatment effects on sludge of different finenesses.

[0031] Specifically, the sludge of different viscosities in the first treatment tube 1 and the second treatment tube 2 is stirred by the stirring mechanism 3, and flocculants are added to the first treatment tube 1 and the second treatment tube 2, so that the sludge is quickly and fully stirred and mixed with the flocculants, so that the pretreatment system can quickly dehydrate the sludge.

[0032] Specifically, the impurities on the first conveyor belt 4 are transferred to the slag removal plate 45 by the scraper 41, and the impurities on the first conveyor belt 4 are disinfected and cleaned by the water outlet pipe 44, so that the sludge attached to the impurities can be better separated, and the impurities are guided by the slag removal plate 45 so that the impurities fall out of the processing frame 100 along the slag removal plate 45, and the slag removal plate 45 is cleaned by the spray head 46, and power is provided for the impurities to move along the slag removal plate 45. When the sludge passes through the screen of the slag removal plate 45, the sludge falls onto the conveying plate 52, and the conveying plate 52 is used to transfer the sludge to the second processing cylinder 2, so as to facilitate better filtering effect of the sludge during transmission.

[0033] Working principle: First, the sludge in the river channel of the water conservancy project is placed on the first conveyor belt 4, and then the first conveyor belt 4 is used to transport the sludge, and the transported sludge and impurities are separated through the screening holes of the first conveyor belt 4, and then the impurities on the first conveyor belt 4 are moved to the slag removal plate 45 by the scraper 41, and the sludge in the impurities is processed by the slag removal plate 45, and then the impurities are slid down along the bottom end of the slag removal plate 45, and the disinfectant is sprayed from the water outlet pipe 44 and the spray head 46 through the water tank 43, so that the disinfectant disinfects the impurities on the first conveyor belt 4 and the slag removal plate 45, and the impurities in the sludge are processed by the auger 53, and then when the auger 53 rotates, the impurities are transferred out from the slag discharge port. , and then the sludge with different impurities is transported to different treatment barrels, the first stirring rod 32 is driven to rotate by the servo motor 31, and then the first stirring rod 32 stirs the sludge inside the first treatment barrel 1, and the sludge inside the first treatment barrel 1 is screened by the coarse filter hole, so that the screened sludge falls into the second treatment barrel 2, and the agent adding mechanism is used to add flocculant to the sludge when the sludge is stirred, so that the flocculant can be better mixed with the sludge, and the gear cylinder 34, the first gear 35 and the second gear 36 cooperate with each other to form a planetary gear, so that the gear cylinder 34 can drive the second gear 36 to rotate faster when it rotates, and the whole work process is completed.

[0034] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0036] It should be noted that the device structure and the drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above invention, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field. The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0037] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations are made to these embodiments without departing from the principle and spirit of the present invention, and they still fall within the protection scope of the present invention.

Claims

1. A water conservancy project river channel desilting sludge screening and pretreatment system, comprising a treatment frame (100), a conveying module and a sludge treatment module, wherein the conveying module and the sludge treatment module are both installed inside the treatment frame (100), the conveying module is used to transport and classify the sludge in the water conservancy project, and then the transported sludge is treated by the sludge treatment module, characterized in that: The sludge treatment module comprises: A first treatment cylinder (1), wherein a coarse filtering hole is provided at the bottom of the inner wall of the first treatment cylinder (1); A second treatment cylinder (2), the second treatment cylinder (2) being located directly below the first treatment cylinder (1), and the inner wall of the second treatment cylinder (2) being provided with fine filtering holes; A stirring mechanism (3), the stirring mechanism (3) being used to stir the sludge in the first treatment cylinder (1) and the second treatment cylinder (2), so that the sludge in the first treatment cylinder (1) falls from the coarse filtering hole into the interior of the second treatment cylinder (2); A reagent adding mechanism, wherein the reagent adding mechanism is respectively arranged above one side of the first treatment tube (1) and the second treatment tube (2), and the reagent adding mechanism is used to add flocculants to the first treatment tube (1) and the second treatment tube (2), and to stir the sludge and flocculants in the first treatment tube (1) and the second treatment tube (2) through the stirring mechanism (3).

2. A water conservancy project river channel dredging sludge screening pretreatment system according to claim 1, characterized in that: The stirring mechanism (3) comprises a servo motor (31) and a first stirring rod (32); a positioning plate (33) is detachably mounted on the top surface of the processing frame (100); the front surface of the positioning plate (33) is connected to the back surface of the servo motor (31); the top end of the first stirring rod (32) is fixedly connected to the output end of the servo motor (31); and a groove adapted to the bottom end of the first stirring rod (32) is provided at the bottom of the inner wall of the first processing cylinder (1).

3. A water conservancy project river channel dredging sludge screening pretreatment system according to claim 2, characterized in that: The bottom end of the first stirring rod (32) is fixedly connected to a gear cylinder (34), the inner wall of the gear cylinder (34) is meshed with three first gears (35), the three first gears (35) are meshed with a second gear (36) on one side close to each other, the axis of the second gear (36) is fixedly connected to a second stirring rod (37), and the bottom end of the second stirring rod (37) is rotatably connected to the inner wall of the second treatment cylinder (2).

4. A water conservancy project river channel dredging sludge screening pretreatment system according to claim 3, characterized in that: A limiting plate (38) is detachably mounted at the center of the bottom surface of the first processing cylinder (1); a positioning groove matching the second stirring rod (37) is formed on the inner wall of the limiting plate (38); three positioning rods are fixedly connected to the top surface of the limiting plate (38); and a limiting groove matching the positioning rod is formed on the axis of the first gear (35).

5. A water conservancy project river channel dredging sludge screening pretreatment system according to claim 1, characterized in that: The conveying module comprises a first conveyor belt (4) and a second conveyor belt (5), the outer side of the first conveyor belt (4) is provided with a plurality of screening holes, the top of the processing frame (100) is provided with a scraper (41), and the bottom of the scraper (41) is in contact with the first conveyor belt (4), the top surface of the first processing cylinder (1) is provided with a first guide plate (42), and the first guide plate (42) extends to the bottom of the front end of the first conveyor belt (4), the second conveyor belt (5) is located directly below the first conveyor belt (4), and the second conveyor belt (5) is at a horizontal angle, the top surface of the second processing cylinder (2) is provided with a second guide plate (51), and the rear of the second guide plate (51) is located below the front end of the second conveyor belt (5).

6. A water conservancy project river channel dredging sludge screening pretreatment system according to claim 5, characterized in that: A water tank (43) is detachably mounted on the top of the processing rack (100), and a plurality of water outlet pipes (44) are fixedly connected to the bottom of the water tank (43), wherein the water outlet pipes (44) are located above the first conveyor belt (4).

7. A water conservancy project river channel dredging sludge screening pretreatment system according to claim 6, characterized in that: A slag removal plate (45) is provided on the top of both sides of the processing frame (100); the slag removal plate (45) and the first conveyor belt (4) are both inclined, and the front end horizontal plane of the slag removal plate (45) and the first conveyor belt (4) is higher than the rear end horizontal plane; a screen is provided on the top surface of the slag removal plate (45); and spray heads (46) are provided on both sides of the water tank (43), and the spray heads (46) are located on the front end top of the slag removal plate (45).

8. A water conservancy project river channel desilting sludge screening pretreatment system according to claim 5, characterized in that: Conveying plates (52) are detachably mounted on both sides of the processing frame (100). The conveying plates (52) are located on both sides of the second conveyor belt (5). The front ends of the conveying plates (52) extend to the top surface of the second processing cylinder (2). An auger (53) is arranged on the top of the conveying plate (52). A slag discharge port is provided on the side of the conveying plate (52).

9. A water conservancy project river channel desilting sludge screening pretreatment process applicable to a water conservancy project river channel desilting sludge screening pretreatment system according to any one of claims 1 to 8, characterized in that: The specific steps of the sludge screening pretreatment process are as follows: Step 1: placing the sludge in the river channel of the water conservancy project onto a first conveyor belt (4), and then using the first conveyor belt (4) to transport the sludge, separating the transported sludge and impurities through the screening holes of the first conveyor belt (4), and then moving the impurities on the first conveyor belt (4) to a slag removal plate (45) through a scraper (41), processing the sludge in the impurities using the slag removal plate (45), and then sliding the impurities down along the bottom end of the slag removal plate (45); Step 2: spraying the disinfectant from the water outlet pipe (44) and the spray head (46) through the water tank (43), so that the disinfectant disinfects the impurities on the first conveyor belt (4) and the slag removal plate (45); Step 3: impurities in the sludge are processed by the auger (53), and when the auger (53) rotates, the impurities are transferred out from the slag discharge port, and sludge with different impurities is transported to different processing cylinders; Step 4: The servo motor (31) drives the first stirring rod (32) to rotate, so that the first stirring rod (32) stirs the sludge inside the first treatment cylinder (1), and the coarse filter hole is used to screen the sludge inside the first treatment cylinder (1), so that the screened sludge falls into the second treatment cylinder (2), and the agent adding mechanism is used to add flocculant to the sludge while the sludge is being stirred, so that the flocculant can be better mixed with the sludge; Step 5: The gear cylinder (34), the first gear (35) and the second gear (36) cooperate with each other to form a planetary gear, so that when the gear cylinder (34) rotates, the second gear (36) can be driven to rotate more quickly.

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