River sludge treatment and dehydration device and treatment process thereof

Abstract

The invention discloses a river sludge treatment and dehydration device and a treatment process thereof, and belongs to the technical field of river sludge treatment.The river sludge treatment and dehydration device comprises a conveying mechanism, a paving unit is assembled on the conveying mechanism, and a tilting unit used for vibrating pretreated sludge conveyed on the surface of the conveying mechanism is assembled in the conveying mechanism; the squeezing mechanism is arranged on one side of the discharging end of the conveying mechanism; through the arrangement of the paving unit, the warping unit and the squeezing mechanism, sludge is evenly paved and preliminarily dehydrated on the filter cloth type conveying belt, the follow-up treatment efficiency is improved, the warping unit generates vibration, water in the sludge is promoted to be separated from solids, after the sludge enters a cavity of a filter part, the sludge is pushed and squeezed through a first electric hydraulic push rod, and the water is squeezed out; in the resetting process, the filtering piece is automatically unfolded, the mud cake naturally falls off, the residual mud cake is further removed through vibration generated by folding and resetting of the filtering plate, and manual intervention is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of river sludge treatment, and in particular to a river sludge treatment dehydration device and a treatment process thereof. Background Art

[0002] River management is also known as "riverbed management", which is an engineering measure to control and transform the river. The water flow in the river usually carries a large amount of sediment, which accumulates on the riverbed after sedimentation to form silt. The silt will have a serious impact on the ecology of the entire river. The siltation of the river has increasingly affected the normal performance of various functions such as flood control, drainage, irrigation, water supply, and navigation. In order to restore the normal functions of the river, it is necessary to carry out regular dredging projects on the river.

[0003] Sludge treatment includes transportation, pretreatment, dehydration and subsequent treatment. The purpose of dehydrating the pretreated sludge is to reduce the water content of the sludge, which is convenient for subsequent treatment and resource utilization.

[0004] In the process of using pressing technology to efficiently dehydrate the pretreated sludge, a large amount of water in the sludge can be quickly removed. However, after this step, the mud cake often adheres to the surface of the filter element. Although the mud cake can naturally fall off from the surface of the filter element to a large extent under the action of its own gravity, some mud cake still remains and needs to be removed manually. This situation not only increases the complexity of the operation, but also requires staff to continuously monitor the surface of the filter element to ensure that there is no residual mud cake. Summary of the invention

[0005] The purpose of the present invention is to propose a river sludge treatment and dewatering device and a treatment process thereof in order to solve the problem that although the mud cake can naturally fall off from the surface of the filter element to a large extent under the action of its own gravity, a part of the mud cake still remains and needs to be removed manually, which requires the staff to continuously monitor the surface of the filter element to ensure that there is no residual mud cake.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A river channel sludge treatment and dewatering device comprises a conveying mechanism, on which a spreading unit is mounted, inside which a lifting unit is mounted for vibrating the pre-treated sludge transported on its surface, and a pressing mechanism is disposed on one side of the discharge end of the conveying mechanism;

[0008] The conveying mechanism comprises a frame and a driving roller shaft mounted in the frame, and a filter cloth conveyor belt having a filtering function and used for conveying pre-treated sludge is wound around the driving roller shaft;

[0009] The pressing mechanism comprises an outer box and a material guide frame mounted around the top inlet of the outer box, one end of the material guide frame abuts against one end of the filter cloth conveyor belt, so that the sludge transmitted to the discharge end can be scraped off the filter cloth conveyor belt by the end of the material guide frame;

[0010] A filter element that can be folded into a "V" shape and automatically reset to a vertical state is slidably installed in the outer box. At least one first electric hydraulic push rod for driving the filter element to move and squeeze the sludge is installed on the side of the outer box close to the frame. An elastic stopper is installed on the inner wall of the outer box through a mounting groove for driving the filter element to repeatedly fold into a "V" shape during the reset process.

[0011] As a further description of the above technical solution:

[0012] The conveying mechanism also includes a motor mounted on the bottom of the frame, and a sprocket is fixed to the output end of the motor and one end of one of the transmission roller shafts, and a chain is mounted on the two sprockets.

[0013] As a further description of the above technical solution:

[0014] The paving unit includes an upper limit plate fixed on the frame, one end of the upper limit plate is inclined, a triangular flat material plate is fixed on the side of the lower surface of the upper limit plate close to the feed end of the conveying mechanism, and a plurality of equalizing rods are fixed on the upper surface of the triangular flat material plate.

[0015] As a further description of the above technical solution:

[0016] The tilting unit includes a shaft rod rotatably connected to the frame, a connecting plate is fixed to the lower surface of the shaft rod through a short rod, round rods are fixed to both sides of the upper surface of the connecting plate through long rods, wherein one side of the two long rods is fixed with an extension rod, and both sides of the frame are provided with guide grooves adapted to the movement trajectory of the extension rod rotating around the shaft rod as the center;

[0017] One end of the extension rod passes through the guide slot and extends to the outside of the frame;

[0018] Both sides of the frame are rotatably connected with a rotating rod through a bearing seat, one end of the rotating rod is fixed with a connecting seat, and at least two levers for driving the extension rod to rotate around the shaft rod are fixed on the connecting seat;

[0019] A third spring is mounted on one side of the lower surface of the connecting plate close to the extension rod, one end of the third spring is fixed to a bottom plate via a third shock-absorbing pad, and both ends of the bottom plate are respectively fixed to the two side walls of the frame;

[0020] The other end of the rotating rod, the other end of one of the transmission roller shafts and one end of one of the sprocket wheels are all fixed with pulleys, and the pulleys are grouped in pairs, and each group is equipped with a synchronous belt.

[0021] As a further description of the above technical solution:

[0022] The filter element comprises a T-shaped seat and a pressing plate slidably mounted in the outer box, and two filter plates are mounted on the T-shaped seat through a spring hinge, so that the filter plates can reset themselves to a vertical state after rotation;

[0023] One end of the first electric hydraulic push rod that penetrates into the outer box is fixed to the pressing plate, a telescopic rod is fixed to one side of the T-shaped seat, a first spring for automatically expanding after contraction is fixed in the telescopic rod through a first shock-absorbing pad, and two adjacent T-shaped seats are connected by the telescopic rod;

[0024] One side of the clamping plate is provided with a recovery groove adapted to the length of the telescopic rod after contraction, and one end of the telescopic rod close to the clamping plate is fixed to the inner wall of the recovery groove, so that the clamping plate can fit the filter plate on one side thereof.

[0025] As a further description of the above technical solution:

[0026] The elastic stopper includes a second spring, which is fixed in the mounting groove through a second shock-absorbing pad. One end of the second spring is provided with a stopper that can slide in the mounting groove. One side of the stopper is formed with an inclined surface, and the other side is a vertical surface.

[0027] As a further description of the above technical solution:

[0028] A drainage hole is provided at the bottom of one side of the two filter plates, and an inclined liquid guide groove corresponding to the drainage hole is provided on one side wall of the outer box, a sealing seat for sealing the inclined liquid guide groove is inserted in the inclined liquid guide groove, and one end of the sealing seat is tightly and smoothly connected to one side of the filter plate, so that the drainage hole can be blocked by the sealing seat during the movement along the sealing seat;

[0029] A liquid guide box for receiving the leachate flowing out after the drainage hole is opened is fixed at the bottom of the outer wall of the outer box, and one end of the liquid guide box is fixedly connected to a drainage pipe.

[0030] As a further description of the above technical solution:

[0031] A linkage plate is fixed to one side of the two sealing seats, a support frame is fixed to the outer wall of the outer box, a second electric hydraulic push rod is mounted on the support frame, and one end of the second electric hydraulic push rod is fixed to the linkage plate.

[0032] As a further description of the above technical solution:

[0033] A discharge groove is provided on the lower surface of the outer box, and an opening and closing unit is installed in the discharge groove;

[0034] The opening and closing unit includes a closing door rotatably connected to the discharge trough by a hinge, a mounting plate is fixed to one side of the lower surface of the outer box, at least a third electric hydraulic push rod is rotatably connected to the mounting plate, one end of the third electric hydraulic push rod is rotatably connected to the closing door, and baffles are fixed on both sides of the lower surface of the outer box to prevent mud cake from splashing when discharging.

[0035] The river silt treatment process includes the following steps:

[0036] S1. First, start the motor to drive the transmission roller to drive the filter cloth conveyor belt to operate, then send the pre-treated sludge to the surface of the filter cloth conveyor belt, and drive the sludge to move through the rotating filter cloth conveyor belt. In the process of moving from the feed end to the discharge end, the sludge first contacts the front end of the triangular flat material plate at the feed end and is squeezed, and under the action of the "V"-shaped end, the sludge is gradually evenly divided and flattened under the action of the equalizing rod;

[0037] At the same time, since the lower surface of the triangular flat material plate is lower than the lower surface of the upper limit plate, a large gap is left between the paved sludge and the upper limit plate. At the same time, when the transmission roller rotates, the connecting seat is driven to rotate by the synchronous belt. During the rotation of the connecting seat, the extension rod is driven to move downward along the guide groove by the lever, thereby driving the end of the connecting plate close to the extension rod to tilt downward and compress the third spring to store force.

[0038] At the same time, the other end is tilted up, so that the round rod at this end presses against the filter cloth conveyor belt. When the lever is not in contact with the extension rod, the connecting plate is driven to reset under the action of the third spring, and the above action is repeated when it contacts next time. In this way, the round rod repeatedly presses against the filter cloth conveyor belt running upward, thereby generating vibration, which effectively helps to separate part of the water in the sludge from the solid particles. Through the vibration, the small particles and water in the sludge will be squeezed and vibrated, thereby increasing the chance of water seeping out of the sludge.

[0039] S2. When the paved sludge is transferred to the discharge end, the sludge is scraped off the surface of the filter cloth conveyor belt under the action of the guide frame and the end of the filter cloth conveyor belt against each other, and falls into the space between two filter plates through the inlet at the top of the outer box. When one grid of space is about to be filled, the first electric hydraulic push rod is started to push the filter element forward one grid, so that the next grid of space is gradually under the inlet, and this cycle repeats. When all the spaces are filled, the motor is turned off and the conveying stops.

[0040] At this time, the first electric hydraulic push rod is started to push the filter element forward. During the movement, the edge contacts the inclined surface of the stop block, gradually pushes against the raised part of the stop block, moves into the installation groove and compresses the second spring. After no contact, the stop block is driven to reset under the action of the second spring. After the filter plate at the front end contacts the inner wall of the outer box, the pressing plate is continued to be pushed to make the two adjacent filter plates gradually approach each other. At this time, the telescopic rod gradually contracts to squeeze and dehydrate the sludge between the filter plates. After the dehydration is completed, the second electric hydraulic push rod is started to drive the linkage plate to move to one side, thereby moving the sealing seat out of the inclined liquid guide groove. At this time, the blockage of the drainage hole is released, and the filtrate collected in the filter plate flows out through the drainage hole, and then flows into the liquid guide box, and then flows to the centralized collection point through the drainage pipe;

[0041] S3, after the liquid is discharged, the sealing seat is reset. At this time, the third electric hydraulic push rod is started to drive the closing door to rotate downward, so that the discharge chute is opened, and then the filter element is pulled backward by the first electric hydraulic push rod. During the movement, the telescopic rod is driven to expand from the contracted state under the action of the first spring, and then the space between the two adjacent filter plates is driven to gradually restore to the initial state. During the expansion process, the mud cake intercepted on the surface of the filter plate falls off downward and slides to one side through the inclined closing door for centralized collection;

[0042] S4. During the backward movement, after the filter plates distributed up and down contact the vertical surfaces of the blocking blocks distributed up and down, the vertical surfaces of the blocking blocks will push against the upper and lower filter plates to fold in a "V" shape. During the gradual folding process, the filter plates are separated from the blocking blocks. At this time, the filter plates are driven to reset under the action of the spring hinges. The above actions are repeated many times during the backward movement, so that the residual mud cake can fall off due to the vibration generated during the folding and resetting process. At this time, the surface of the filter plate is restored to a clean state after resetting;

[0043] Finally, close the closing door to re-close the discharge chute, and then start the motor to repeat the above actions.

[0044] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0045] By setting up the spreading unit, the lifting unit and the pressing mechanism, it is realized that in the process of conveying the pre-treated sludge to the pressing mechanism through the filter cloth conveyor belt, the transmitted sludge can be physically pressed from the feeding end of the filter cloth conveyor belt through the triangular flat material plate, so that the sludge can be evenly flattened, and at the same time, it is helpful to squeeze out part of the water in the sludge, so that the water can more easily seep through the filter cloth and be absorbed or discharged by the filter cloth, so that the subsequent processing efficiency is improved;

[0046] At the same time, during the transmission process, the lifting unit can generate two micro-vibrations of different amplitudes at intervals on the filter cloth conveyor belt. The micro-vibration can effectively help separate the water in the sludge from the solid particles. Through the vibration, the small particles and water in the sludge will be squeezed and vibrated, thereby increasing the chance of water seeping out of the sludge, while preventing the sludge from scattering or splashing on the filter cloth conveyor belt.

[0047] When the sludge transmitted to the discharge end is guided into the cavity in the filter element by the guide frame, and the conveying is stopped when it is full, the filter element is pushed forward gradually by the first electric hydraulic push rod, and the stop block is moved into the installation groove by contacting with the inclined surface of the stop block during the process. When the filter element moves to abut against the inner wall of the outer box, the filter element is pushed continuously to compress its cavity, thereby squeezing the sludge, squeezing the water into the filter plate, and leaving a mud cake on the surface of the filter plate;

[0048] During the backward reset process, the filter element unfolds itself and most of the mud cake falls off naturally. At the same time, the filter plate gradually contacts the vertical surface of the resistance block, and then presses against the filter plate to fold in a "V" shape and then reset. The action is repeated many times, so that the remaining mud cake can fall off due to the vibration generated during the folding and reset process, without the need for manual cleaning and monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A schematic diagram of a three-dimensional structure provided according to an embodiment of the present invention is shown;

[0050] Figure 2 A schematic diagram of a planar structure provided according to an embodiment of the present invention is shown;

[0051] Figure 3 It shows a schematic structural diagram of a paving unit provided according to an embodiment of the present invention;

[0052] Figure 4 It shows a schematic structural diagram of a frame provided by an embodiment of the present invention after one side is cut open;

[0053] Figure 5 It shows a schematic structural diagram of a cutaway side of an outer box provided in an embodiment of the present invention;

[0054] Figure 6 A schematic diagram showing the position of the end of the material guide frame abutting against the filter cloth conveyor belt according to an embodiment of the present invention;

[0055] Figure 7 It shows a schematic structural diagram of the other side of the outer box provided by an embodiment of the present invention;

[0056] Figure 8 It shows a schematic diagram of the structure in the upward-looking state provided by an embodiment of the present invention;

[0057] Fig. 9 A schematic diagram of the structure expansion of the other side of the rack provided by an embodiment of the present invention is shown;

[0058] Fig.10 A schematic structural diagram of a warping unit provided according to an embodiment of the present invention is shown;

[0059] Fig.11 A schematic diagram of the structure of a filter element provided in an embodiment of the present invention is shown;

[0060] Fig.12 The embodiment of the present invention provides Figure 4 The enlarged structural diagram at A in the middle;

[0061] Fig.13 The embodiment of the present invention provides Figure 7 The enlarged structural diagram at B in the middle;

[0062] Fig.14 The embodiment of the present invention provides Fig.10 The enlarged structural diagram at C in the middle;

[0063] Fig.15 The embodiment of the present invention provides Fig.11 Schematic diagram of the structure enlarged at point D in the middle.

[0064] Legend:

[0065] 10. Conveying mechanism; 11. Frame; 12. Driving roller; 13. Filter cloth conveyor belt; 14. Motor;

[0066] 20. Paving unit; 21. Upper limit plate; 22. Triangular flat material plate; 23. Equalizing rod;

[0067] 30. Warping unit; 31. Shaft; 32. Short rod; 33. Connecting plate; 34. Long rod; 35. Round rod; 36. Extension rod; 37. Synchronous belt; 38. Guide groove; 39. Rotating rod; 310. Connecting seat; 311. Driving rod; 312. Pulley; 313. Third spring; 314. Bottom plate;

[0068] 40. Pressing mechanism; 41. Outer box; 42. Material guide frame; 43. Filter element; 431. T-shaped seat; 432. Filter plate; 433. Pressing plate; 434. Telescopic rod; 435. First spring; 44. First electric hydraulic push rod; 45. Mounting groove; 46. Elastic stopper; 461. Second spring; 462. Stopper block; 47. Inclined liquid guide groove; 48. Sealing seat; 49. Linkage plate; 410. Second electric hydraulic push rod; 411. Liquid guide box;

[0069] 50. Opening and closing unit; 51. Closing door; 52. Third electric hydraulic push rod; 53. Baffle. DETAILED DESCRIPTION

[0070] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0071] like Figure 1 - Fig.15 As shown, the present invention provides:

[0072] The river channel silt treatment and dewatering device comprises a conveying mechanism 10, on which a spreading unit 20 is mounted, and inside the conveying mechanism 10 a lifting unit 30 is mounted for vibrating the pre-treated silt transported on its surface, and a pressing mechanism 40 is disposed on one side of the discharge end of the conveying mechanism 10;

[0073] The conveying mechanism 10 includes a frame 11 and a driving roller 12 mounted in the frame 11, and a filter cloth conveyor belt 13 for conveying pre-treated sludge and having a filtering function is wound around the driving roller 12. The conveying mechanism 10 also includes a motor 14 mounted at the bottom of the frame 11, and a sprocket is fixed to the output end of the motor 14 and one end of one of the driving rollers 12, and a chain is mounted on the two sprockets. Preferably, a first spray pipe is also provided in the frame 11 for cleaning the filter cloth conveyor belt 13;

[0074] Specifically, after the motor 14 is started, the sprocket at its output end drives the chain to rotate, which in turn drives another sprocket to rotate, and then the drive roller 12 connected thereto rotates, thereby rotating the filter cloth conveyor belt 13 and driving the pre-treated sludge to move.

[0075] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the paving unit 20 includes an upper limit plate 21 fixed on the frame 11, one end of the upper limit plate 21 is inclined, a triangular flat material plate 22 is fixed on the lower surface of the upper limit plate 21 near the feeding end of the conveying mechanism 10, and a plurality of equal-dividing rods 23 are fixed on the upper surface of the triangular flat material plate 22;

[0076] Specifically, when the pretreated sludge is being transported on the filter cloth conveyor belt 13, it contacts the triangular flat material plate 22 at the feed end and is evenly flattened under the action of the triangular flat material plate 22. At the same time, the sludge can be squeezed during the paving process, and the dividing rods 23 are also distributed in a triangular shape, so that the sludge at the inlet end blocked by the triangular flat material plate 22 during the paving process can be divided by the dividing rods 23 to avoid the whole sludge from gathering at the inlet end, thereby ensuring the normal paving. At the same time, the flattened sludge remains in a flat state on the filter cloth conveyor belt 13.

[0077] During the flat transmission process, the tension and movement of the filter cloth conveyor belt 13 will exert a certain squeezing force on the sludge, which helps to squeeze out part of the water in the sludge, and the gravity of the sludge itself will also exert a certain squeezing effect on it.

[0078] like Figure 2 , Figure 4 , Fig.10 , Fig.12 and Fig.14 As shown, the tilting unit 30 includes a shaft 31 rotatably connected to the frame 11, a connecting plate 33 is fixed to the lower surface of the shaft 31 through a short rod 32, round rods 35 are fixed to both sides of the upper surface of the connecting plate 33 through long rods 34, wherein one side of the two long rods 34 is fixed with an extension rod 36, and both sides of the frame 11 are provided with guide grooves 38 adapted to the motion trajectory of the extension rod 36 rotating around the shaft 31 as the center;

[0079] One end of the extension rod 36 passes through the guide slot 38 and extends to the outside of the frame 11;

[0080] Both sides of the frame 11 are rotatably connected with a rotating rod 39 through a bearing seat, one end of the rotating rod 39 is fixed with a connecting seat 310, and at least two levers 311 for driving the extension rod 36 to rotate around the shaft 31 are fixed on the connecting seat 310. Preferably, the two levers 311 have different lengths;

[0081] A third spring 313 is mounted on one side of the lower surface of the connecting plate 33 close to the extension rod 36. One end of the third spring 313 is fixed to a bottom plate 314 via a third shock-absorbing pad. Both ends of the bottom plate 314 are respectively fixed to the two side walls of the frame 11. Preferably, a third shock-absorbing pad is also provided between the third spring 313 and the connecting plate 33. The upper and lower surfaces of the third shock-absorbing pad are respectively fixed to the connecting plate 33 and the third spring 313.

[0082] The other end of the rotating rod 39, the other end of one of the transmission roller shafts 12 and one end of one of the sprocket wheels are all fixed with pulleys 312, and the pulleys 312 are grouped in pairs, and each group is equipped with a synchronous belt 37;

[0083] When the filter cloth conveyor belt 13 drives the flattened sludge to move, the driving roller 12 drives the rotating rod 39 to rotate through the pulley 312 and the synchronous belt 37, thereby rotating the connecting seat 310 at its end. During the rotation process, the levers 311 of different lengths intermittently contact the extension rod 36, and by moving the extension rod 36 in the guide groove 38, the end of the connecting plate 33 close to the extension rod 36 is tilted downward with the shaft 31 as the center.

[0084] At this time, the third spring 313 is compressed, and the other end tilts up. During the tilting process, the round rod 35 at this end abuts against the filter cloth conveyor belt 13. At the same time, during the continuous rotation, the filter cloth conveyor belt 13 is abutted to varying degrees, thereby vibrating the filter cloth conveyor belt 13 locally. It is worth noting that the vibration amplitude will not drive the flattened sludge to splash upward to the lower surface of the upper limit plate 21.

[0085] The filter cloth conveyor belt 13 can effectively help separate part of the water in the sludge from the solid particles after vibration. After part of the water is removed, the water content of the sludge is reduced, and subsequent treatment can be carried out more easily.

[0086] like Figure 2 , Figure 5 , Figure 6 , Figure 7 , Fig.11 and Fig.15 As shown, the pressing mechanism 40 includes an outer box 41 and a material guide frame 42 mounted around the top inlet of the outer box 41. One end of the material guide frame 42 abuts against one end of the filter cloth conveyor belt 13, so that the sludge transmitted to the discharge end can be scraped off the filter cloth conveyor belt 13 by the end of the material guide frame 42. Preferably, two spray pipes facing the inlet are provided in the material guide frame 42, which can clean the filter element 43 after water is passed through.

[0087] A filter element 43 is slidably mounted in the outer box 41 and can be folded into a "V" shape and automatically reset to a vertical state;

[0088] The filter element 43 includes a T-shaped seat 431 and a pressing plate 433 which are slidably mounted in the outer box 41. Two filter plates 432 are mounted on the T-shaped seat 431 through a spring hinge so that the filter plates 432 can reset themselves to a vertical state after rotation. A drainage hole is provided at the bottom of one side of the two filter plates 432.

[0089] Specifically, the filter plate 432 is in a sealed fit with the inner wall of the outer box 41, and the filter plate 432 can slide smoothly in the outer box 41, and the top of the filter plate 432 located at the top and the bottom of the filter plate 432 located at the bottom are both arc-shaped, ensuring that the filter plate 432 can smoothly change its angle;

[0090] One end of the first electric hydraulic push rod 44 that penetrates into the outer box 41 is fixed to the pressing plate 433, a telescopic rod 434 is fixed to one side of the T-shaped seat 431, a first spring 435 that can be automatically expanded after being contracted is fixed in the telescopic rod 434 through a first shock-absorbing pad, and two adjacent T-shaped seats 431 are connected by the telescopic rod 434;

[0091] A recovery groove matching the length of the telescopic rod 434 after contraction is provided on one side of the pressing plate 433, and one end of the telescopic rod 434 close to the pressing plate 433 is fixed to the inner wall of the recovery groove, so that the pressing plate 433 can fit the filter plate 432 on one side thereof;

[0092] During the loading process, when the gap space at the front end is about to be filled, the next space is pushed to below the inlet. During the gradual movement, some sludge will still enter the space at the front end and fill the space. After the next space is completely below the inlet, the sludge can only enter this space. This cycle repeats until the space between the filter plates 432 is filled.

[0093] like Figure 5 and Figure 7 As shown, an inclined liquid guide groove 47 corresponding to the liquid drain hole is provided on one side wall of the outer box 41, and a sealing seat 48 for sealing the inclined liquid guide groove 47 is inserted into the inclined liquid guide groove 47, and one end of the sealing seat 48 is tightly and smoothly connected to one side of the filter plate 432, so that the liquid drain hole can be blocked by the sealing seat 48 during the process of moving along the sealing seat 48;

[0094] Preferably, a limiting groove for guiding the liquid flowing out of the inclined liquid guiding groove 47 located above is provided on the outer wall of the outer box 41, so as to limit the filtrate flowing out of the inclined liquid guiding groove 47 above to only enter the liquid guiding box 411, and not to flow around on the outer wall of the outer box 41;

[0095] A liquid guide box 411 is fixed at the bottom of the outer wall of the outer box 41 for receiving the leachate flowing out after the drainage hole is opened, and one end of the liquid guide box 411 is fixedly connected to a drainage pipe;

[0096] A linkage plate 49 is fixed to one side of the two sealing seats 48. A support frame is fixed to the outer wall of the outer box 41. A second electric hydraulic push rod 410 is mounted on the support frame. One end of the second electric hydraulic push rod 410 is fixed to the linkage plate 49.

[0097] Specifically, when the filter element 43 moves forward and gradually compresses the gap space, the drain hole always moves along the sealing seat 48, so that it always remains blocked by the sealing seat 48, so that the filtrate entering the filter plate 432 during the squeezing process will not flow out in real time;

[0098] When the pressing is completed, the second electric hydraulic push rod 410 is started to gradually move the sealing seat 48 out of the inclined liquid guiding groove 47. At this time, the filtrate can flow out through the drainage hole, and then flow out through the inclined liquid guiding groove 47 to the liquid guiding box 411, and finally discharged to the outside through the drainage pipe for centralized collection. After the filtrate is discharged, the sealing seat 48 is reset.

[0099] like Figure 2 , Figure 5 and Figure 8 As shown, a discharge groove is provided on the lower surface of the outer box 41, and an opening and closing unit 50 is installed in the discharge groove;

[0100] The opening and closing unit 50 includes a closing door 51 rotatably connected to the discharge trough through a hinge, a mounting plate is fixed to one side of the lower surface of the outer box 41, and at least one third electric hydraulic push rod 52 is rotatably connected to the mounting plate, and one end of the third electric hydraulic push rod 52 is rotatably connected to the closing door 51, and baffles 53 for preventing mud cake from splashing when discharging are fixed on both sides of the lower surface of the outer box 41;

[0101] When the sealing seat 48 is reset, the third electric hydraulic push rod 52 drives the closing door 51 to tilt downward to form a discharge slope. Then, when the first electric hydraulic push rod 44 drives the filter element 43 to reset backward, the fallen mud cake slides out through the inclined closing door 51 for centralized collection.

[0102] like Figure 2 , Figure 5 and Fig.13 As shown, at least one first electric hydraulic push rod 44 for driving the filter element 43 to move and squeeze the sludge is installed on the side of the outer box 41 close to the frame 11, and an elastic stopper 46 for driving the filter element 43 to repeatedly fold into a "V" shape during the resetting process is installed on the inner wall of the outer box 41 through a mounting groove 45;

[0103] The elastic stopper 46 includes a second spring 461, which is fixed in the installation groove 45 through a second shock-absorbing pad. One end of the second spring 461 is provided with a stopper 462 that can slide in the installation groove 45. One side of the stopper 462 is formed with an inclined surface, and the other side is a vertical surface. It is worth noting that a second shock-absorbing pad is also fixed to one end of the second spring 461 connected to the stopper 462, and the second spring 461 is fixed to the stopper 462 through the second shock-absorbing pad.

[0104] When the first electric hydraulic push rod 44 pushes the filter element 43 to move forward, the filter element 43 contacts the inclined surface of the stop block 462, and then gradually pushes against the stop block 462 during the movement and is recovered into the installation groove 45. When the filter element 43 is driven to move backward, the filter element 43 contacts the vertical surface of the stop block 462. At this time, under the action of the vertical surface, the stop block 462 will not be recovered into the installation groove 45, but will push against the filter element 43, so that the upper and lower filter plates 432 gradually tilt in a "V" shape, gradually separate from the stop block 462 during the tilting process, and return to the vertical state driven by the spring hinge after separation, and tilt in a "V" shape again when contacting the next stop block 462. This reciprocating process causes the filter plate 432 to vibrate, thereby shaking off the mud cake remaining on its surface, and then sliding out through the inclined closing door 51.

[0105] The river silt treatment process includes the following steps:

[0106] S1. First, the motor 14 is started to drive the transmission roller 12 to drive the filter cloth conveyor belt 13 to operate, and then the pre-treated sludge is sent to the surface of the filter cloth conveyor belt 13. The rotating filter cloth conveyor belt 13 drives the sludge to move. In the process of moving from the feed end to the discharge end, the sludge first contacts the front end of the triangular flat material plate 22 at the feed end and is squeezed, and under the action of the "V"-shaped end, the sludge is gradually evenly divided and flattened under the action of the equalizing rod 23;

[0107] At the same time, since the lower surface of the triangular flat plate 22 is lower than the lower surface of the upper limit plate 21, a large gap is left between the paved sludge and the upper limit plate 21. At the same time, when the transmission roller 12 rotates, the rotating rod 39 is driven by the synchronous belt 37 to drive the connecting seat 310 to rotate. During the rotation of the connecting seat 310, the lever 311 drives the extension rod 36 to move downward along the guide groove 38, thereby driving the end of the connecting plate 33 close to the extension rod 36 to tilt downward, and compressing the third spring 313 to store force;

[0108] At the same time, the other end is tilted, so that the round rod 35 at this end abuts against the filter cloth conveyor belt 13. When the lever 311 is not in contact with the extension rod 36, the connecting plate 33 is driven to reset under the action of the third spring 313, and the above action is repeated when it contacts next time. In this way, the round rod 35 repeatedly abuts against the filter cloth conveyor belt 13 running upward, thereby generating vibration, which effectively helps to separate part of the water in the sludge from the solid particles. Through the vibration, the small particles and water in the sludge will be squeezed and vibrated, thereby increasing the chance of water seeping out of the sludge.

[0109] S2. When the paved sludge is transferred to the discharge end, the sludge is scraped off the surface of the filter cloth conveyor belt 13 under the action of the guide frame 42 and the end of the filter cloth conveyor belt 13 that abuts against each other, and falls into the space between the two filter plates 432 through the inlet at the top of the outer box 41. When one grid of space is about to be filled, the first electric hydraulic push rod 44 is started to push the filter element 43 forward one grid, so that the next grid of space is gradually located below the inlet, and this cycle repeats. When all the spaces are filled, the motor 14 is turned off and the conveying is stopped.

[0110] At this time, the first electric hydraulic push rod 44 is started to push the filter element 43 forward. During the movement, the edge contacts the inclined surface of the stop block 462, gradually pushes against the raised part of the stop block 462, moves into the installation groove 45 and compresses the second spring 461. After no contact, the stop block 462 is driven to reset under the action of the second spring 461. After the filter plate 432 at the front end contacts the inner wall of the outer box 41, the pressing plate 433 is continued to be pushed to make the two adjacent filter plates 432 gradually approach each other. At this time, the telescopic rod 434 gradually contracts to squeeze and dehydrate the sludge between the filter plates 432. After the dehydration is completed, the second electric hydraulic push rod 410 is started to drive the linkage plate 49 to move to one side, thereby moving the sealing seat 48 out of the inclined liquid guide groove 47. At this time, the blockage of the drainage hole is released, and the filtrate collected in the filter plate 432 flows out through the drainage hole, and then flows into the liquid guide box 411, and then flows to the centralized collection point through the drainage pipe;

[0111] S3, after the liquid is discharged, the sealing seat 48 is reset. At this time, the third electric hydraulic push rod 52 is started to drive the closing door 51 to rotate downward, so that the discharge trough is opened, and then the filter element 43 is pulled backward by the first electric hydraulic push rod 44. During the movement, the telescopic rod 434 is driven to expand from the contracted state under the action of the first spring 435, and then the space between the two adjacent filter plates 432 is driven to gradually restore to the initial state. During the expansion process, the mud cake intercepted on the surface of the filter plate 432 falls off downward and slides out to one side through the inclined closing door 51 for centralized collection;

[0112] S4, during the backward movement, after the filter plates 432 distributed up and down contact with the vertical surfaces of the stop blocks 462 distributed up and down, the vertical surfaces of the stop blocks 462 will press against the upper and lower filter plates 432 to fold in a "V" shape, and the filter plates 432 and the stop blocks 462 will separate during the gradual folding process. At this time, the filter plates 432 are driven to reset under the action of the spring hinge. The above actions are repeated several times during the backward movement, so that the residual mud cake can fall off due to the vibration generated during the folding and resetting process. At this time, the surface of the filter plate 432 is restored to a clean state after resetting;

[0113] Finally, the closing door 51 is closed to re-close the discharge chute, and then the motor 14 is started to repeat the above-mentioned actions.

[0114] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A river sludge treatment and dewatering device, comprising a conveying mechanism (10), characterized in that: The conveying mechanism (10) is equipped with a spreading unit (20), the conveying mechanism (10) is equipped with a lifting unit (30) for vibrating the pre-treated sludge transported on its surface, and a pressing mechanism (40) is provided on one side of the discharge end of the conveying mechanism (10); The conveying mechanism (10) comprises a frame (11) and a driving roller (12) mounted in the frame (11); a filter cloth conveyor belt (13) for conveying pre-treated sludge and having a filtering function is wound around the driving roller (12); The pressing mechanism (40) comprises an outer box (41) and a material guide frame (42) mounted around the top inlet of the outer box (41), one end of the material guide frame (42) abuts against one end of the filter cloth conveyor belt (13), so that the sludge transmitted to the discharge end can be scraped off the filter cloth conveyor belt (13) by the end of the material guide frame (42); A filter element (43) capable of being folded into a "V" shape and automatically reset to a vertical state is slidably mounted in the outer box (41); at least one first electric hydraulic push rod (44) for driving the filter element (43) to move and squeeze the sludge is mounted on a side of the outer box (41) close to the frame (11); and an elastic stopper (46) for driving the filter element (43) to repeatedly fold into a "V" shape during the reset process is mounted on the inner wall of the outer box (41) via a mounting groove (45).

2. The river sludge treatment and dewatering device according to claim 1, characterized in that: The conveying mechanism (10) further comprises a motor (14) mounted on the bottom of the frame (11), a sprocket being fixed to the output end of the motor (14) and one end of one of the transmission roller shafts (12), and a chain being mounted on the two sprockets.

3. The river sludge treatment and dewatering device according to claim 1, characterized in that: The paving unit (20) comprises an upper limit plate (21) fixed on the frame (11), one end of the upper limit plate (21) is inclined, a triangular flat material plate (22) is fixed on the side of the lower surface of the upper limit plate (21) close to the feeding end of the conveying mechanism (10), and a plurality of equal distribution rods (23) are fixed on the upper surface of the triangular flat material plate (22).

4. The river sludge treatment and dewatering device according to claim 2, characterized in that: The tilting unit (30) comprises a shaft (31) rotatably connected to the frame (11); a connecting plate (33) is fixed to the lower surface of the shaft (31) via a short rod (32); round rods (35) are fixed to both sides of the upper surface of the connecting plate (33) via long rods (34); an extension rod (36) is fixed to one side of the two long rods (34); and guide grooves (38) adapted to the movement trajectory of the extension rod (36) rotating around the shaft (31) are provided on both sides of the frame (11); One end of the extension rod (36) passes through the guide groove (38) and extends to the outside of the frame (11); Both sides of the frame (11) are rotatably connected to a rotating rod (39) via a bearing seat, one end of the rotating rod (39) is fixed with a connecting seat (310), and at least two levers (311) for driving the extension rod (36) to rotate around the shaft rod (31) are fixed on the connecting seat (310); A third spring (313) is mounted on one side of the lower surface of the connecting plate (33) close to the extension rod (36); one end of the third spring (313) is fixed to a bottom plate (314) via a third shock-absorbing pad; and both ends of the bottom plate (314) are respectively fixed to two side walls of the frame (11); The other end of the rotating rod (39), the other end of one of the transmission roller shafts (12) and one end of one of the sprocket wheels are all fixed with pulleys (312), and the pulleys (312) are arranged in groups of two, and each group is equipped with a synchronous belt (37).

5. The river sludge treatment and dewatering device according to claim 1, characterized in that: The filter element (43) comprises a T-shaped seat (431) and a pressing plate (433) slidably mounted in the outer box (41); two filter plates (432) are mounted on the T-shaped seat (431) via a spring hinge, so that the filter plates (432) can reset themselves to a vertical state after rotation; One end of the first electric hydraulic push rod (44) that penetrates into the outer box (41) is fixed to the pressing plate (433); a telescopic rod (434) is fixed to one side of the T-shaped seat (431); a first spring (435) is fixed in the telescopic rod (434) through a first shock-absorbing pad so that the first spring (435) can be automatically expanded after being contracted; two adjacent T-shaped seats (431) are connected through the telescopic rod (434); A recovery groove matching the length of the telescopic rod (434) after contraction is provided on one side of the clamping plate (433); one end of the telescopic rod (434) close to the side of the clamping plate (433) is fixed to the inner wall of the recovery groove, so that the clamping plate (433) can fit with the filter plate (432) on one side thereof.

6. The river sludge treatment and dewatering device according to claim 5, characterized in that: The elastic stopper (46) comprises a second spring (461), the second spring (461) being fixed in the mounting groove (45) via a second shock-absorbing pad, one end of the second spring (461) being provided with a stopper block (462) capable of sliding in the mounting groove (45), one side of the stopper block (462) being formed with an inclined surface, and the other side being a vertical surface.

7. The river sludge treatment and dewatering device according to claim 5, characterized in that: A drainage hole is provided at the bottom of one side of the two filter plates (432); an inclined liquid guide groove (47) corresponding to the drainage hole is provided on one side wall of the outer box (41); a sealing seat (48) for sealing the inclined liquid guide groove (47) is inserted into the inclined liquid guide groove (47); one end of the sealing seat (48) is tightly and smoothly connected to one side of the filter plate (432), so that the drainage hole can be blocked by the sealing seat (48) in the process of moving along the sealing seat (48); A liquid guide box (411) for receiving the leachate flowing out after the drainage hole is opened is fixed at the bottom of the outer wall of the outer box (41), and one end of the liquid guide box (411) is fixedly connected to a drainage pipe.

8. The river sludge treatment and dewatering device according to claim 7, characterized in that: A linkage plate (49) is fixed to one side of the two sealing seats (48), a support frame is fixed to the outer wall of the outer box (41), a second electric hydraulic push rod (410) is mounted on the support frame, and one end of the second electric hydraulic push rod (410) is fixed to the linkage plate (49).

9. The river sludge treatment and dewatering device according to claim 1, characterized in that: A discharge groove is provided on the lower surface of the outer box (41), and an opening and closing unit (50) is installed in the discharge groove; The opening and closing unit (50) comprises a closing door (51) rotatably connected to the discharge trough via a hinge, a mounting plate is fixed to one side of the lower surface of the outer box (41), at least one third electric hydraulic push rod (52) is rotatably connected to the mounting plate, one end of the third electric hydraulic push rod (52) is rotatably connected to the closing door (51), and baffles (53) for preventing mud cake from splashing when discharging are fixed to both sides of the lower surface of the outer box (41).

10. The treatment process for the river sludge treatment and dewatering device according to any one of claims 1 to 9, characterized in that: The steps include: S1. First, the motor (14) is started to drive the transmission roller (12) to drive the filter cloth conveyor belt (13) to operate, and then the pre-treated sludge is sent to the surface of the filter cloth conveyor belt (13). The rotating filter cloth conveyor belt (13) drives the sludge to move. In the process of moving from the feed end to the discharge end, the sludge first contacts the front end of the triangular flat material plate (22) at the feed end and is squeezed. Under the action of the "V"-shaped end, the sludge is gradually evenly divided and flattened under the action of the equalizing rod (23); At the same time, since the lower surface of the triangular flat material plate (22) is lower than the lower surface of the upper limit plate (21), a large gap is left between the paved sludge and the upper limit plate (21). At the same time, when the transmission roller (12) rotates, the rotating rod (39) is driven by the synchronous belt (37) to drive the connecting seat (310) to rotate. During the rotation of the connecting seat (310), the lever (311) drives the extension rod (36) to move downward along the guide groove (38), thereby driving the end of the connecting plate (33) close to the extension rod (36) to tilt downward, and compressing the third spring (313) to store force; At the same time, the other end is tilted up, so that the round rod (35) at this end abuts against the filter cloth conveyor belt (13), and when the lever (311) is not in contact with the extension rod (36), the connecting plate (33) is driven to reset under the action of the third spring (313), and the above action is repeated when the contact is made next time, and the filter cloth conveyor belt (13) running upward is repeatedly abutted by the round rod (35), thereby generating vibration, effectively helping to separate part of the water in the sludge from the solid particles, and through the vibration, the small particles and water in the sludge are squeezed and vibrated, thereby increasing the chance of water seeping out of the sludge; S2. When the paved sludge is transferred to the discharge end, the sludge is scraped off the surface of the filter cloth conveyor belt (13) under the action of the guide frame (42) and the end of the filter cloth conveyor belt (13) that abuts against each other, and falls into the space between two filter plates (432) through the inlet at the top of the outer box (41). When one grid of space is about to be filled, the first electric hydraulic push rod (44) is started to push the filter element (43) forward one grid, so that the next grid of space is gradually located below the inlet, and this process is repeated. When all the spaces are filled, the motor (14) is turned off and the conveying is stopped; At this time, the first electric hydraulic push rod (44) is started to push the filter element (43) forward. During the movement, the edge contacts the inclined surface of the stop block (462), gradually pressing against the raised portion of the stop block (462) to move into the installation groove (45) and compress the second spring (461). After the contact is gone, the stop block (462) is driven to reset under the action of the second spring (461). When the filter plate (432) at the front end contacts the inner wall of the outer box (41), the pressing plate (433) is continuously pushed to make the two adjacent filter plates ( 432) gradually approach each other, at which time the telescopic rod (434) gradually contracts to squeeze and dehydrate the sludge between the filter plates (432). After the dehydration is completed, the second electric hydraulic push rod (410) is started to drive the linkage plate (49) to move to one side, thereby moving the sealing seat (48) out of the inclined liquid guide groove (47). At this time, the blockage of the drainage hole is released, and the filtrate collected in the filter plate (432) flows out through the drainage hole, and then flows into the liquid guide box (411), and then flows to the centralized collection point through the drainage pipe; S3, after the liquid discharge is completed, the sealing seat (48) is reset. At this time, the third electric hydraulic push rod (52) is started to drive the closing door (51) to rotate downward, so that the discharge trough is opened, and then the filter element (43) is pulled backward by the first electric hydraulic push rod (44). During the movement, the telescopic rod (434) is driven to expand from the contracted state under the action of the first spring (435), thereby driving the space between the two adjacent filter plates (432) to gradually restore to the initial state. During the expansion process, the mud cake intercepted on the surface of the filter plate (432) falls off downward and slides out to one side through the inclined closing door (51) for centralized collection; S4, during the backward movement, after the filter plates (432) distributed up and down contact with the vertical surfaces of the stop blocks (462) distributed up and down, the vertical surfaces of the stop blocks (462) will press against the upper and lower filter plates (432) to fold in a "V" shape, and the filter plates (432) and the stop blocks (462) will separate during the gradual folding process. At this time, the filter plates (432) are driven to reset under the action of the spring hinge. The above actions are repeated several times during the backward movement, so that the residual mud cake can fall off due to the vibration generated during the folding and resetting process. At this time, the surface of the filter plates (432) is restored to a clean state after resetting; Finally, the closing door (51) is closed to re-close the discharge chute, and then the motor (14) is started to repeat the above-mentioned action.

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