A river channel sludge dewatering mechanism

Abstract

Relating to the field of sludge treatment, the present invention discloses a river channel sludge dewatering mechanism, including a mounting frame, and further including: a feeding unit, arranged on one side of the mounting frame, for controlling the intermittent feeding of sludge; a conveying unit, arranged on the mounting frame, for conveying the sludge; a filtering unit, arranged above the conveying unit and close to one side of the feeding unit, for filtering stones in the sludge; a cleaning unit, arranged at the bottom of the conveying unit, for cleaning the conveying unit. The present invention can remove stones in the sludge, facilitate the subsequent squeezing and dewatering work of the sludge, improve the dewatering efficiency of the sludge, and the conveying unit contacts the cleaning unit at the bottom of the mounting frame during movement. Through the brushing of the cleaning unit, impurities attached to the inside of the conveying unit can be cleaned, reducing the accumulation of impurities and affecting the dewatering efficiency of the sludge.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, and specifically relates to a river channel sludge dewatering mechanism. Background Art

[0002] Sludge is a flocculent and honeycomb structure formed by the deposition of fine particles such as clay minerals under the action of intergranular electrostatic force and molecular attraction in a slow flowing water environment such as the ocean or lake area. During the processing of sludge, in order to facilitate the transportation of sludge, it is necessary to dehydrate the sludge first.

[0003] Existing equipment has the following disadvantages: Since the sludge contains a large amount of water, the water in the sludge needs to be preliminarily filtered through a filter screen in the gravity dewatering section, and then dehydrated by an extrusion roller. However, because the sludge contains stones, if the stones are not removed, when the subsequent extrusion roller dehydrates by extrusion, it will not only damage the extrusion roller, but also cause the phenomenon of insufficient sludge dehydration, affecting the dehydration efficiency of the sludge;

[0004] In addition, since the impurities in the sludge are small and easy to adhere to the filtering equipment, the equipment is prone to congestion during long-term use, affecting the sludge dewatering work.

[0005] Therefore, the present application now proposes a river channel sludge dewatering mechanism to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a river channel sludge dewatering mechanism to solve the problems of damage to the extrusion roller and insufficient sludge dehydration, which affect the sludge dehydration efficiency.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A river channel sludge dewatering mechanism, including a mounting frame, further including:

[0008] A feeding unit, arranged on one side of the mounting frame, for controlling the intermittent feeding of sludge;

[0009] A conveying unit, arranged on the mounting frame, for conveying the sludge;

[0010] A filtering unit, arranged above the conveying unit and close to one side of the feeding unit, for filtering stones in the sludge;

[0011] A cleaning unit, arranged at the bottom of the conveying unit, for cleaning the conveying unit.

[0012] Among them, the filtering unit includes a connecting frame arranged on the mounting frame, a fourth motor arranged on the connecting frame, and a collecting cage arranged at the power output end of the fourth motor. The collecting cage is located inside the connecting frame and its bottom contacts the conveying unit, and rotates under the drive of the fourth motor to filter large stones in the sludge;

[0013] A filtering component for filtering small stones is arranged on one side of the collecting cage away from the feeding unit.

[0014] Among them, the filtering component includes a fifth motor arranged on the mounting frame, a rotating shaft arranged at the power output end of the fifth motor, and a filter plate arranged at the bottom of the rotating shaft for blocking small stones. The filter plate swings left and right under the drive of the rotating shaft.

[0015] Among them, cleaning parts for removing small stones are arranged at positions on both sides of the mounting frame corresponding to the filter plate. The cleaning parts include a discharge frame opened on the mounting frame, an electric telescopic rod arranged on the discharge frame, and a baffle arranged inside the discharge frame at the upper part for blocking the sludge. A scraping plate for scraping small stones is arranged on the side of the electric telescopic rod close to the filter plate.

[0016] Among them, a plurality of ejector rods for driving the ejecting components on the filter plate to move are arranged on one side of the filter plate away from the collecting cage. The ejector rods are arranged on the mounting frame through a fixing frame.

[0017] Among them, the ejecting component includes a connecting rod penetrating through the filter plate, a top block arranged on the outer side of the connecting rod relative to the filter plate, and a rotating rod arranged on the inner side of the connecting rod relative to the filter plate. A push rod for ejecting impurities blocked in the filter holes of the filter plate is arranged on the rotating rod. The top block is arranged corresponding to the position of the ejector rod, and the push rod penetrates through the filter plate;

[0018] A second elastic member for driving the top block to reset is arranged between the connecting rod at the position between the top block and the filter plate.

[0019] Among them, the feeding unit includes a feeding box arranged above one side of the mounting frame, a feeding port opened at the bottom of the feeding box, and a guiding plate arranged inside the feeding box and inclined towards the feeding port side. A limiting plate for controlling the intermittent feeding of the sludge to the conveying unit is arranged inside the feeding port. The limiting plate is adjustably arranged inside the feeding port through a control component;

[0020] The control component includes a first motor disposed on the top of the feed box, a cam disposed on the power output end of the first motor, and a connecting plate located below the cam and moving up and down under the drive of the cam. A push rod for supporting the connecting plate is disposed at the lower part of the connecting plate. The push rod passes through the top wall of the feed box and its lower part is disposed on the material limiting plate, and moves up and down inside the blanking port under the drive of the connecting plate.

[0021] A first elastic member is disposed between the push rod and the feed box.

[0022] Wherein, the conveying unit includes a second motor disposed outside the mounting frame, a transmission member disposed on the power output end of the second motor, and a conveying filter screen connected to the transmission member. The conveying filter screen is disposed inside the mounting frame and transports the sludge to the side away from the feed box under the drive of the transmission member.

[0023] Wherein, the cleaning unit includes a support frame disposed at the bottom of the mounting frame, a third motor disposed on the support frame, and a rotating shaft disposed on the power output end of the third motor. A connecting roller is disposed inside the support frame on the rotating shaft, and a cleaning brush for cleaning the conveying filter screen is disposed on the connecting roller.

[0024] Wherein, a partition plate for separating the sludge is disposed at the upper part of the mounting frame.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. The present invention adds sludge into the interior of the feeding unit. Under the control of the components in the feeding unit, the sludge raw material is intermittently added to the conveying unit. Driven by the conveying unit, the sludge passes through the filtering unit. When the sludge is transported to the filtering unit, it is a mud-water mixture, and the water content in the sludge is relatively high, so the fluidity of the sludge is relatively strong. Then, the stones mixed in the sludge can be removed through the filtering unit. Then, the water in the sludge is subjected to gravity dehydration on the conveying unit and then transported to the extrusion dehydration process for further processing. The stones in the sludge can be removed, which facilitates the subsequent extrusion dehydration work of the sludge, improves the dehydration efficiency of the sludge, and during the movement of the conveying unit, it contacts the cleaning unit at the bottom of the mounting frame, and the impurities attached to the interior of the conveying unit can be cleaned by brushing through the cleaning unit, reducing the accumulation of impurities and affecting the dehydration efficiency of the sludge.

[0027] 2. In the present invention, the collection cage is made of steel wire with a certain elasticity. During the movement of the conveying unit, the fourth motor drives the collection cage to rotate in the opposite direction to the conveying unit. When there are large stones in the silt at the upper end of the conveying unit, the steel wire on the collection cage deforms, causing the stones to be squeezed into the interior of the collection cage. After the device is used up, two connected steel wires on the collection cage can be manually separated to discharge the large stones from the interior of the collection cage. Since the gap of the collection cage is relatively large, only larger stones can be collected, and then the smaller stones will flow to one side of the filter plate. The filter plate intercepts the stones. Then, driven by the fifth motor, the rotating shaft drives the filter plate to swing left and right, and the stones can be conveyed to one side of the conveying unit close to the inner wall of the mounting frame, separating the large stones and small stones for separate filtration. This can prevent large stones from clogging both sides of the filter plate, affecting the fluidity of the silt and further affecting the dehydration efficiency of the silt. When the filter plate rotates to the maximum angle, the scraper is located on the right side of the filter plate. Then, the electric telescopic rod is started to drive the scraper to move towards one side of the filter plate, transporting the small stones accumulated at the front end of the filter plate towards one side of the baffle. Then, the lower end of the baffle opens towards the side away from the filter plate. When the electric telescopic rod drives the scraper to move into the placement groove opened on the discharge frame, the torsion spring connected to the upper part of the baffle drives the lower end of the baffle to reset, sealing the connection between the discharge frame and the conveying unit to prevent silt from flowing into the interior of the discharge frame. Then, driven by the fifth motor, the filter plate tilts to the other side, and then the small stones accumulated on the filter plate are cleaned by the scraper on the other side. Since the small stones are all accumulated on both sides of the filter plate, the small stones with the same diameter as the mesh holes of the filter plate are likely to accumulate in the mesh holes of the filter plate, easily causing the phenomenon of blockage of the mesh holes on both sides of the filter plate. Then, ejector rods are arranged on both sides of the filter plate. When the filter plate rotates to the maximum angle, it disengages from the ejector rods. The ejector rods squeeze the ejecting components, causing the ejecting components to eject the impurities accumulated in the mesh holes of the filter plate, thereby improving the filtration efficiency of the filter plate for small stones. The ejector rods squeeze the ejector blocks, causing the connecting rod to drive the rotating rod to rotate, and the push rod to extend out of the interior of the filter plate, then ejecting the impurities blocking the mesh holes of the filter plate. Then, when the filter plate rotates to the other side driven by the fifth motor, the ejector rods stop squeezing the ejector blocks. The second elastic member is made of a spring, driving the push rod to perform a reset movement and retracting into the filter plate, reducing the occupied area of the push rod in the filter mesh holes of the filter plate, thereby reducing the impact on the filtration effect of the filter plate.

[0028] 3. In the present invention, the sludge raw material is added into the interior of the feeding box. The sludge moves along the material guiding plate to the discharging opening. The first motor is turned on, and the cam rotates. When the pointed top contacts the connecting plate, the connecting plate moves downward, squeezing the first elastic member. The pushing rod drives the material limiting plate to move into the discharging opening, blocking the discharging opening. Then, when the cam rotates and the pointed top disengages from the connecting plate, the first elastic member drives the connecting plate to move upward, causing the pushing rod to drive the material limiting plate to move upward, and the discharging opening is opened. It can achieve intermittent feeding of the sludge raw material inside the feeding box to the conveying unit, reducing the phenomenon that the conveying unit is blocked due to excessive sludge feeding amount. Moreover, during the up-and-down movement of the material limiting plate, the sludge inside the feeding box can be stirred, reducing the sedimentation phenomenon of the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the schematic diagram of the main structure in an embodiment of the present invention;

[0030] Figure 2 is the schematic diagram of the structure in a top view in an embodiment of the present invention;

[0031] Figure 3 is the schematic diagram of the structure in a side view in an embodiment of the present invention;

[0032] Figure 4 is the schematic diagram of the sectional view structure in an embodiment of the present invention;

[0033] Figure 5 is the schematic diagram of the cleaning member structure in an embodiment of the present invention;

[0034] Figure 6 is the schematic diagram of the cleaning unit structure in an embodiment of the present invention;

[0035] Figure 7 is the schematic diagram of the ejecting component structure in an embodiment of the present invention;

[0036] Figure 8 is Figure 2 the enlarged schematic diagram of part A;

[0037] Figure 9 is the schematic diagram of the filter component structure in an embodiment of the present invention.

[0038] In the figure: 1, mounting bracket; 2, feeding unit; 21, feeding box; 22, material guiding plate; 23, first motor; 24, cam; 25, connecting plate; 26, first elastic member; 27, push rod; 28, material limiting plate; 29, material discharging port; 3, conveying unit; 31, second motor; 32, transmission member; 33, conveying filter screen; 4, cleaning unit; 41, third motor; 42, support frame; 43, rotating shaft; 44, connecting roller; 45, cleaning brush; 5, filtering unit; 51, fourth motor; 52, connecting frame; 53, collecting cage; 54, filtering component; 541, fifth motor; 542, rotating shaft; 543, filter plate; 5431, top block; 5432, connecting rod; 5433, second elastic member; 5434, rotating rod; 5435, push rod; 544, ejector rod; 5441, fixing frame; 545, cleaning member; 5451, discharge frame; 5452, electric telescopic rod; 5453, scraping plate; 5454, baffle plate; 5455, placing groove; 6, partition plate. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Please refer to Figure 1-9 , the present invention provides a technical solution: a river silt dewatering mechanism, including a mounting bracket 1, and further including:

[0041] A feeding unit 2, arranged on one side of the mounting bracket 1, for controlling intermittent feeding of silt;

[0042] A conveying unit 3, arranged on the mounting bracket 1, for conveying silt;

[0043] A filtering unit 5, arranged above the conveying unit 3 and close to one side of the feeding unit 2, for filtering stones in the silt;

[0044] A cleaning unit 4, arranged at the bottom of the conveying unit 3, for cleaning the conveying unit 3.

[0045] It should be noted that, during operation, sludge is added to the interior of the feed unit 2, and under the control of the components in the feed unit 2, sludge raw materials are intermittently added to the conveying unit 3. Driven by the conveying unit 3, the sludge passes through the filtering unit 5. When the sludge is transported to the filtering unit 5, it is a mixture of mud and water. The sludge has a high water content, so the fluidity of the sludge is relatively strong. Then the stones mixed in the sludge can be removed by the filtering unit 5, and then the water in the sludge is gravity dehydrated on the conveying unit 3 and transported to the extrusion dehydration process for the next step of processing. The stones in the sludge can be removed, which facilitates the subsequent extrusion dehydration of the sludge and improves the dehydration efficiency of the sludge. In addition, the conveying unit 3 contacts the cleaning unit 4 at the bottom of the mounting frame 1 during the movement. The impurities attached to the inside of the conveying unit 3 can be cleaned by brushing the cleaning unit 4, thereby reducing the accumulation of impurities and affecting the dehydration efficiency of the sludge.

[0046] In one embodiment, the filtering unit 5 includes a connecting frame 52 arranged on the mounting frame 1, a fourth motor 51 arranged on the connecting frame 52, and a collecting cage 53 arranged at the power output end of the fourth motor 51. The collecting cage 53 is located inside the connecting frame 52 and the bottom is in contact with the conveying unit 3. Driven by the fourth motor 51, the collecting cage 53 rotates to filter large stones in the sludge.

[0047] A filtering component 54 for filtering small stones is arranged on the side of the collecting cage 53 away from the feeding unit 2 .

[0048] In this design, the collecting cage 53 is made of steel wire with a certain elasticity. During the movement of the conveying unit 3, the fourth motor 51 drives the collecting cage 53 and the conveying unit 3 to rotate in the opposite direction. When there are large stones in the silt at the upper end of the conveying unit 3, the steel wire on the collecting cage 53 is deformed, so that the stones are squeezed into the interior of the collecting cage 53. When the device is used up, the two steel wires connected on the collecting cage 53 can be manually pried apart to allow the large stones to be discharged from the interior of the collecting cage 53.

[0049] In one embodiment, the filter component 54 includes a fifth motor 541 arranged on the mounting frame 1, a rotating shaft 542 arranged at the power output end of the fifth motor 541, and a filter plate 543 arranged at the bottom of the rotating shaft 542 to block pebbles. The filter plate 543 swings left and right under the drive of the rotating shaft 542.

[0050] With such a design, since the gap of the collection cage 53 is relatively large, only larger stones can be collected. Then, the smaller stones will flow to one side of the filter plate 543. The filter plate 543 intercepts the stones. Then, driven by the fifth motor 541, the rotating shaft 542 drives the filter plate 543 to swing left and right, which can convey the stones to one side of the conveying unit 3 close to the inner side wall of the mounting frame 1, separately filter the large stones and the small stones, and can reduce the blockage of the large stones on both sides of the filter plate 543, affecting the fluidity of the sludge, and further affecting the dehydration efficiency of the sludge.

[0051] In one embodiment, as Figure 8 shown, cleaning members 545 for removing small stones are provided at positions on both sides of the mounting frame 1 corresponding to the filter plate 543. The cleaning members 545 include a discharge frame 5451 opened on the mounting frame 1, an electric telescopic rod 5452 provided on the discharge frame 5451, and a baffle 5454 provided inside the discharge frame 5451 to block the sludge at the upper part. A scraping plate 5453 for scraping small stones is provided on the side of the electric telescopic rod 5452 close to the filter plate 543. The upper part of the baffle 5454 is rotatably connected to the discharge frame 5451 through a torsion spring.

[0052] With such a design, when the filter plate 543 rotates to the maximum angle, the scraping plate 5453 is located on the right side of the filter plate 543. Then, the electric telescopic rod 5452 is started to drive the scraping plate 5453 to move towards one side of the filter plate 543, transporting the small stones accumulated at the front end of the filter plate 543 to one side of the baffle 5454. Then, the lower end of the baffle 5454 opens towards the side away from the filter plate 543. Then, when the electric telescopic rod 5452 drives the scraping plate 5453 to move into the placement groove 5455 opened on the discharge frame 5451, the torsion spring connected to the upper part of the baffle 5454 drives the lower end of the baffle 5454 to reset, sealing the connection between the discharge frame 5451 and the conveying unit 3, and reducing the inflow of sludge into the interior of the discharge frame 5451. Then, driven by the fifth motor 541, the filter plate 543 tilts to the other side, and then the scraping plate 5453 on the other side cleans the small stones accumulated on the filter plate 543.

[0053] In one embodiment, a plurality of ejector rods 544 for driving the ejector members on the filter plate 543 to move are provided on the side of the filter plate 543 away from the collection cage 53. The ejector rods 544 are provided on the mounting frame 1 through a fixing frame 5441.

[0054] With such a design, since the small stones are piled up on both sides of the filter plate 543, small stones with the same mesh diameter as the filter plate 543 are likely to accumulate in the mesh holes of the filter plate 543, which easily causes the phenomenon of blockage of the mesh holes on both sides of the filter plate 543. Then, ejector rods 544 are arranged on both sides of the filter plate 543. When the filter plate 543 rotates to the maximum angle, it disengages from the ejector rods 544, and the ejector rods 544 squeeze the ejecting components, so that the ejecting components eject the impurities accumulated in the mesh holes of the filter plate 543, thereby improving the filtering efficiency of the filter plate 543 for small stones.

[0055] In one embodiment, the ejecting component includes a connecting rod 5432 penetrating through the filter plate 543, a top block 5431 arranged on the outer side of the filter plate 543 of the connecting rod 5432, and a rotating rod 5434 arranged on the inner side of the filter plate 543 of the connecting rod 5432. A push rod 5435 for ejecting the impurities blocked in the filtering holes of the filter plate 543 is arranged on the rotating rod 5434. The position of the top block 5431 is correspondingly arranged with that of the ejector rod 544, and the push rod 5435 penetrates through the filter plate 543;

[0056] A second elastic member 5433 for driving the top block 5431 to reset is arranged between the connecting rod 5432 at the position between the top block 5431 and the filter plate 543.

[0057] With such a design, the ejector rod 544 squeezes the top block 5431, so that the connecting rod 5432 drives the rotating rod 5434 to rotate, and the push rod 5435 extends out from the inside of the filter plate 543, and then ejects the impurities blocked in the mesh holes of the filter plate 543. Then, when the filter plate 543 rotates to the other side driven by the fifth motor 541, the ejector rod 544 stops squeezing the top block 5431. The second elastic member 5433 is made of a spring, drives the push rod 5435 to perform a reset movement, and retracts into the filter plate 543, which can reduce the occupied area of the push rod 5435 in the filter mesh holes of the filter plate 543, thereby reducing the influence on the filtering effect of the filter plate 543.

[0058] In one embodiment, the feeding unit 2 includes a feeding box 21 arranged above one side of the mounting frame 1, a blanking port 29 opened at the bottom of the feeding box 21, and a guiding plate 22 arranged in the feeding box 21 and inclined downward to the blanking port 29. A limiting plate 28 for controlling the intermittent feeding of the sludge to the conveying unit 3 is arranged inside the blanking port 29, and the limiting plate 28 is adjustably arranged inside the blanking port 29 through a control component;

[0059] The control component includes a first motor 23 arranged on the top of the feed box 21, a cam 24 arranged at the power output end of the first motor 23, and a connecting plate 25 located below the cam 24 and moving up and down under the drive of the cam 24. A push rod 27 for supporting the connecting plate 25 is arranged at the lower part of the connecting plate 25. The push rod 27 passes through the top wall of the feed box 21 and its lower part is arranged on the material limiting plate 28, and moves up and down inside the material discharge port 29 under the drive of the connecting plate 25.

[0060] A first elastic member 26 is arranged between the push rod 27 and the feed box 21 at the position between the connecting plate 25 and the feed box 21.

[0061] With such a design, the sludge raw material is added into the interior of the feed box 21, and the sludge moves along the guide plate 22 to the material discharge port 29. The first motor 23 is turned on, the cam 24 rotates, and when the pointed top contacts the connecting plate 25, the connecting plate 25 moves downward, squeezing the first elastic member 26. The push rod 27 drives the material limiting plate 28 to move into the interior of the material discharge port 29, blocking the material discharge port 29. Then, when the cam 24 rotates and the pointed top disengages from the connecting plate 25, the first elastic member 26 drives the connecting plate 25 to move upward, causing the push rod 27 to drive the material limiting plate 28 to move upward, and the material discharge port 29 is opened. It can realize the intermittent feeding of the sludge raw material in the feed box 21 to the conveying unit 3, reduce the phenomenon that the conveying unit 3 is blocked due to excessive sludge feeding amount, and during the up and down movement of the material limiting plate 28, the sludge inside the feed box 21 can be stirred, reducing the sludge precipitation phenomenon.

[0062] In an embodiment, the conveying unit 3 includes a second motor 31 arranged outside the mounting frame 1, a transmission member 32 arranged at the power output end of the second motor 31, and a conveying filter screen 33 connected to the transmission member 32. The conveying filter screen 33 is arranged inside the mounting frame 1 and transports the sludge to the side away from the feed box 21 under the drive of the transmission member 32.

[0063] With such a design, the second motor 31 is started, so that the transmission member 32 drives the conveying filter screen 33 to move, transporting the sludge raw material. When the sludge raw material moves continuously to the side away from the feed box 21, the water in the sludge flows out from the lower end of the conveying filter screen 33 under the action of gravity. Then, the water in the sludge raw material is continuously removed, and the sludge gradually becomes viscous.

[0064] In an embodiment, the cleaning unit 4 includes a support frame 42 arranged at the bottom of the mounting frame 1, a third motor 41 arranged on the support frame 42, and a rotating shaft 43 arranged at the power output end of the third motor 41. A connecting roller 44 is arranged inside the support frame 42 on the rotating shaft 43, and a cleaning brush 45 for cleaning the conveying filter screen 33 is arranged on the connecting roller 44.

[0065] With such a design, when the silt raw material is transported to the other end of the mounting frame 1 through the conveying filter screen 33, it is conveyed to the next extrusion and dehydration process, and then falls off the conveying filter screen 33. When the conveying filter screen 33 moves to the position of the connecting roller 44, the third motor 41 is turned on to drive the rotating shaft 43 to drive the cleaning brush 45 to rotate in the opposite direction to the conveying filter screen 33. The cleaning brush 45 can clean the conveying filter screen 33 and reduce the accumulation of impurities in the mesh holes of the conveying filter screen 33.

[0066] In one embodiment, a partition plate 6 for separating the silt is provided on the upper part of the mounting frame 1.

[0067] With such a design, the partition plate 6 can separate the silt at the upper end of the conveying filter screen 33 into multiple segments, forming a groove between each segment, which can facilitate the discharge of the water in the silt from the groove and improve the dehydration efficiency of the silt.

Claims

1. A river channel silt dewatering mechanism, comprising a mounting frame (1), characterized in that, it further comprises: a feeding unit (2), arranged on one side of the mounting frame (1) for controlling the intermittent feeding of silt; a conveying unit (3), arranged on the mounting frame (1) for conveying the silt; a filtering unit (5), arranged above the conveying unit (3) and on the side close to the feeding unit (2) for filtering stones in the silt; the filtering unit (5) includes a filtering component (54) arranged on one side of the feeding unit (2) for filtering small stones; the filtering component (54) includes a fifth motor (541) arranged on the mounting frame (1), a rotating shaft (542) arranged at the power output end of the fifth motor (541), and a filtering plate (543) arranged at the bottom of the rotating shaft (542) for blocking small stones. The filtering plate (543) swings left and right driven by the rotating shaft (542); cleaning components (545) for removing small stones are arranged at positions on both sides of the mounting frame (1) corresponding to the filtering plate (543). The cleaning components (545) include a discharge frame (5451) opened on the mounting frame (1), an electric telescopic rod (5452) arranged on the discharge frame (5451), and a baffle (5454) arranged inside the discharge frame (5451) at the upper part for blocking the silt. A scraping plate (5453) for scraping small stones is arranged on the side of the electric telescopic rod (5452) close to the filtering plate (543); a plurality of ejector rods (544) for driving the ejecting components on the filtering plate (543) to move are arranged on one side of the filtering plate (543). The ejector rods (544) are arranged on the mounting frame (1) through fixing frames (5441); the ejecting components include a connecting rod (5432) penetrating through the filtering plate (543), a top block (5431) arranged on the connecting rod (5432) outside the filtering plate (543), and a rotating rod (5434) arranged on the connecting rod (5432) inside the filtering plate (543). A push rod (5435) for ejecting impurities blocked in the filtering holes of the filtering plate (543) is arranged on the rotating rod (5434). The top block (5431) is arranged corresponding to the position of the ejector rod (544), and the push rod (5435) penetrates through the filtering plate (543); a second elastic member (5433) for driving the top block (5431) to reset is arranged between the connecting rod (5432) at the position between the top block (5431) and the filtering plate (543); a cleaning unit (4), arranged at the bottom of the conveying unit (3) for cleaning the conveying unit (3).

2. The river channel silt dewatering mechanism according to claim 1, characterized in that: The filtering unit (5) further includes a connecting frame (52) arranged on the mounting frame (1), a fourth motor (51) arranged on the connecting frame (52), and a collection cage (53) arranged at the power output end of the fourth motor (51). The collection cage (53) is located inside the connecting frame (52) and its bottom contacts the conveying unit (3). Driven by the fourth motor (51), it rotates to filter large stones in the silt.

3. A river silt dewatering mechanism according to claim 1, characterized in that: The feeding unit (2) includes a feeding box (21) arranged above one side of the mounting frame (1), a feeding port (29) opened at the bottom of the feeding box (21), and a guiding plate (22) located inside the feeding box (21) and inclined towards the feeding port (29). A limiting plate (28) for controlling the intermittent feeding of silt to the conveying unit (3) is arranged inside the feeding port (29), and the limiting plate (28) is adjustably arranged inside the feeding port (29) through a control component; The control component includes a first motor (23) arranged on the top of the feeding box (21), a cam (24) arranged at the power output end of the first motor (23), and a connecting plate (25) located below the cam (24) and moving up and down driven by the cam (24). A push rod (27) for supporting the connecting plate (25) is arranged at the lower part of the connecting plate (25). The push rod (27) passes through the top wall of the feeding box (21) and its lower part is arranged on the limiting plate (28), and moves up and down inside the feeding port (29) driven by the connecting plate (25); A first elastic member (26) is arranged between the push rod (27) and the feeding box (21) where the push rod (27) is located.

4. A river silt dewatering mechanism according to claim 3, characterized in that: The conveying unit (3) includes a second motor (31) arranged outside the mounting frame (1), a transmission member (32) arranged at the power output end of the second motor (31), and a conveying filter screen (33) connected to the transmission member (32). The conveying filter screen (33) is arranged inside the mounting frame (1), and drives the silt to be transported to the side away from the feeding box (21) under the drive of the transmission member (32).

5. A river silt dewatering mechanism according to claim 1, characterized in that: The cleaning unit (4) includes a support frame (42) arranged at the bottom of the mounting frame (1), a third motor (41) arranged on the support frame (42), and a rotating shaft (43) arranged at the power output end of the third motor (41). A connecting roller (44) is arranged inside the support frame (42) on the rotating shaft (43), and a cleaning brush (45) for cleaning the conveying filter screen (33) is arranged on the connecting roller (44).

6. A river silt dewatering mechanism according to claim 1, characterized in that: A partition plate (6) for separating sludge is provided at the upper part of the mounting frame (1).

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