A riverbed sludge dredging and dewatering integrated treatment equipment

Abstract

The present invention discloses a riverbed mud dredging and dewatering integrated processing equipment, including a feed unit base and a dewatering unit. The feed unit includes a storage tank, a feed pipe and a screw conveyor arranged in the storage tank. The dewatering unit includes a dewatering cylinder and a plurality of filter press assemblies and a plurality of reflux mechanisms installed on the outer surface of the dewatering cylinder; the dewatering cylinder is coaxially connected to the bottom surface of the storage tank, and an upper guide hopper, an upper dewatering mechanism, a lower guide hopper and a lower dewatering mechanism are sequentially arranged in the dewatering cylinder from top to bottom; the upper and lower parts of the side wall of the dewatering cylinder are evenly distributed along the circumference to open a plurality of upper mud discharge ports corresponding to the upper dewatering mechanism and a plurality of filter press assemblies, and a plurality of lower mud discharge ports corresponding to the lower dewatering mechanism and a plurality of reflux mechanisms, and a drainage hole is opened in the lower part of the side wall of the dewatering cylinder; a plurality of reflux mechanisms are connected to a plurality of filter press assemblies one by one through a conveying pipe. The present invention has high processing efficiency, low energy consumption and high degree of automation.

Description

Technical Field

[0001] The invention relates to integrated riverbed mud dredging and dewatering processing equipment. Background Art

[0002] As a carrier of water resources, the long-term impact of water flow will cause soil migration and river siltation. In daily life, when a large amount of organic waste enters the river and exceeds the self-purification of the water body, it will be deposited at the bottom of the riverbed with a greater proportion and become part of the riverbed mud. If not properly handled, it will not only reduce the water storage capacity and flood control capacity of the river, but also make the river water black and smelly, and the water quality will deteriorate repeatedly. Therefore, it must be handled through riverbed mud dredging and dehydration equipment.

[0003] The existing riverbed sediment dredging and dewatering equipment generally extracts the riverbed sediment, generally uses centrifugal dewatering equipment to remove the water in the sediment, and then cleans out the dewatered sediment. The above centrifugal dewatering needs to work under high speed conditions, consumes a lot of energy, and the amount of sediment processed at a single time is also limited. The dewatered sediment has no fixed shape, which is not conducive to the subsequent collection, transportation and reuse of the sediment; and the sediment after centrifugal treatment needs to be manually cleaned before it can be dehydrated again. The degree of automation is low and it cannot work continuously, which increases the labor intensity of the staff and reduces the efficiency of riverbed sediment treatment. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a riverbed mud dredging and dewatering integrated treatment equipment, which not only improves the treatment efficiency of riverbed mud, but also has a high degree of automation, can reduce the labor intensity of staff, and can reduce energy consumption.

[0005] The object of the present invention is achieved as follows: A riverbed mud dredging and dehydration integrated processing equipment comprises a base, a dehydration unit fixed on the top of the base, and a feeding unit arranged on the top of the dehydration unit; wherein,

[0006] The feeding unit comprises a storage tank, a feeding pipe connected to the upper part of the side wall of the storage tank, and a screw conveyor arranged in the storage tank;

[0007] The dehydration unit comprises a dehydration cylinder and a plurality of filter press assemblies and a plurality of reflux mechanisms installed on the outer surface of the dehydration cylinder; the dehydration cylinder is coaxially connected to the bottom surface of the storage tank, and an upper guide hopper, an upper dehydration mechanism, a lower guide hopper and a lower dehydration mechanism are sequentially arranged in the dehydration cylinder from top to bottom; a plurality of upper mud discharge ports corresponding to the upper dehydration mechanism and a plurality of filter press assemblies are uniformly arranged on the upper part of the side wall of the dehydration cylinder along the circumference, and a plurality of lower mud discharge ports corresponding to the lower dehydration mechanism and a plurality of reflux mechanisms are uniformly arranged on the lower part of the side wall of the dehydration cylinder along the circumference, and a drainage hole is arranged on the lower part of the side wall of the dehydration cylinder; a plurality of reflux mechanisms are respectively connected to a plurality of filter press assemblies one by one through a conveying pipe;

[0008] The sludge enters the dewatering unit through the feeding unit. The sludge that has been initially filtered and dehydrated by the upper dewatering mechanism enters the filter press assembly through the upper mud discharge port, and is squeezed and dehydrated again by the filter press assembly to form blocks. The lower dewatering mechanism dehydrates the sludge that has escaped from the upper dewatering mechanism again, and the sludge that has been filtered by the lower dewatering mechanism enters the reflux mechanism through the lower mud discharge port, and is transported to the filter press assembly by the reflux mechanism.

[0009] The above-mentioned integrated riverbed dredging and dehydration processing equipment, wherein the screw conveyor includes a first transmission shaft passing through the top cover of the storage tank, a driving motor fixed on the top surface of the storage tank and connected to the first transmission shaft, and an auger blade installed on the first transmission shaft.

[0010] The above-mentioned integrated riverbed dredging and dewatering treatment equipment, wherein the upper dewatering mechanism includes a filter hopper, a plurality of throwing components, a cleaning component and a driving component;

[0011] The filter bucket comprises a circular top plate and a conical side wall connected to the edge of the top plate; wherein the circular top plate is provided with an axial hole located in the center and two guide holes located symmetrically around the axial hole; the conical side wall is provided with a plurality of groups of filter holes in a radial shape, the lower part of the conical side wall is provided with a plurality of slot holes evenly distributed along the circumference corresponding to the plurality of upper mud discharge ports on the dewatering cylinder, and an arc-shaped rod through hole is provided in the middle of the top of each slot hole;

[0012] A plurality of throwing components are arranged in a plurality of slots in a one-to-one correspondence; each throwing component includes a material storage trough, an arc rod, a first spring, an arc block, two push rods and a baffle; wherein, the slot of the material storage trough is adapted to the slot on the filter bucket; the arc rod is slidably inserted into the arc rod through-hole on the filter bucket, and the upper end of the arc rod is fixed to the middle of the top of the slot of the material storage trough through a blocking plate; the first spring is sleeved on the arc rod located inside the filter bucket, so that the slot of the material storage trough seals the slot of the filter bucket; the arc block is fixed to the bottom of the material storage trough; one end of the two push rods are hinged to the upper parts of both sides of the slot of the material storage trough in a one-to-one correspondence; the baffle is hinged between the two side walls of the upper mud discharge port, and the lower parts of both sides of the inner end surface of the baffle are hinged to the other ends of the two push rods in a one-to-one correspondence.

[0013] The cleaning assembly is arranged inside the filter bucket and includes a second transmission shaft, a sleeve, a bearing plate, two guide rods, a plurality of cleaning arms, two wedge blocks and a driving assembly; wherein, the second transmission shaft is inserted into the axial hole on the filter bucket and is coaxially connected to the lower end of the first transmission shaft in the screw conveyor; the sleeve is rotatably sleeved on the second transmission shaft, and a plurality of guide grooves are uniformly axially provided on the wall of the sleeve along the circumference, and the top of each guide groove is respectively connected to the upper end of a second spring; a through hole with an inner diameter matching the outer diameter of the sleeve is provided at the center of the bearing plate, and a plurality of protrusions are uniformly provided on the wall of the through hole matching the plurality of guide grooves on the sleeve The guide grooves correspond to each other, and the bearing plate is slidably mounted on the sleeve in a manner that the plurality of sliders are embedded in the plurality of guide grooves in a one-to-one manner, and the top surfaces of the plurality of sliders are connected to the lower ends of the plurality of second springs; two guide rods are fixed on the top surface of the bearing plate symmetrically and inserted into the two guide holes on the filter bucket in a one-to-one manner; the number of the cleaning arms is the same as the number of groups of filter holes on the filter bucket, and the plurality of cleaning arms are connected to the outer peripheral surface of the bearing plate in an umbrella-like shape, and a group of ejectors corresponding to a group of filter holes on the filter bucket are fixed on the outer surface of each cleaning arm; two wedge-shaped blocks are fixed on the bottom surface of the bearing plate symmetrically;

[0014] The driving assembly is arranged below the cleaning assembly and comprises a bearing seat, an inner gear ring, three pinion gears, a large gear, a plurality of driving arms and two driving rods; wherein, the bearing seat is fixedly connected to the inner wall of the dehydration cylinder through two supporting rods; the inner gear ring is rotatably mounted on the top surface of the bearing seat; the three pinion gears are evenly mounted on the top surface of the bearing seat through rotating shafts and mesh with the inner gear ring; the large gear is fixedly sleeved on the second transmission shaft and meshes with the three pinion gears respectively; the number of the driving arms is the same as the number of the throwing assemblies, and a plurality of driving arms are evenly connected to the outer circumferential surface of the inner gear ring, and a sphere is fixed on the outer end of each driving arm and contacts the bottom surface of the arc block at the bottom of the storage trough; two driving rods are fixed to the top surface of the inner gear ring in a one-to-one correspondence with the two wedge-shaped blocks on the bottom surface of the bearing plate;

[0015] The structure of the lower dehydration mechanism is the same as that of the upper dehydration mechanism.

[0016] In the above-mentioned integrated riverbed dredging and dewatering treatment equipment, a plurality of partition plates are fixed in a radial pattern on the conical side wall of the filter bucket; a guide plate is fixed on each of the two sides of the top of each slot hole and the side surface of the partition plate on the conical side wall.

[0017] In the above-mentioned integrated riverbed dredging and dehydration treatment equipment, the filter press assembly includes a filter press chamber, a filter press mechanism and a sealing mechanism; wherein,

[0018] The filter press chamber is fixed on the outer surface of the dehydration cylinder, and a feed port is provided at the upper part of the inner end wall of the filter press chamber relative to the upper mud discharge port; a dehydration hole connected to the inner cavity of the dehydration cylinder is provided at the lower part of the inner end wall of the filter press chamber; a return hole is provided in the middle part of a side wall of the filter press chamber;

[0019] The filter press mechanism comprises a filter plate fixed at the lower part of the inner cavity of the filter press chamber and located above the dehydration hole, a pressing plate movably arranged above the filter plate, and an oil cylinder fixed on the outer surface of the dehydration cylinder and having a piston rod passing through the top wall of the filter press chamber and connected to the center of the top surface of the pressing plate;

[0020] The sealing mechanism includes two transverse slide grooves which are correspondingly opened in the middle of the inner surfaces of the two side walls of the filter press chamber, two pull rods which are correspondingly slidably connected in the two transverse slide grooves, a push plate which is located in the inner cavity of the filter press chamber and connected to the inner ends of the two pull rods, a sealing door which is connected to the outer ends of the two pull rods, and an electric telescopic rod which is fixed on the bottom surface of the filter press chamber and connected to the center of the outer end surface of the sealing door through a transition rod.

[0021] The above-mentioned integrated riverbed dredging and dewatering processing equipment, wherein the reflux mechanism includes a collection chamber, a delivery pipe, a one-way valve and a mud pump; the collection chamber is fixed on the outer surface of the dewatering cylinder, a recovery port is provided on the upper part of the inner end wall of the collection chamber relative to the lower mud discharge port on the dewatering cylinder, and a feeding hole is provided on the bottom wall of the collection chamber; the delivery pipe is connected between the feeding hole of the collection chamber and the filter press assembly; the one-way valve is arranged on the delivery pipe; the mud pump is installed on the delivery pipe and close to the feeding hole of the collection chamber.

[0022] The integrated riverbed dredging and dewatering treatment equipment of the present invention has the following characteristics:

[0023] 1. A filter press assembly is provided to squeeze and dehydrate the bottom mud that has been initially filtered and has entered the filter press chamber again. The bottom mud squeezed by the filter press assembly for multiple times can be formed into blocks, and the formed mud blocks can be pulled out of the filter press chamber by an electric telescopic rod. The bottom mud with a fixed shape is convenient for storage and transportation, which reduces the labor intensity of the staff. Moreover, the traditional centrifugal dehydration method is abandoned, and the squeezing force between the bottom muds is used for primary dehydration, and the filter press assembly is used for secondary dehydration. It can work continuously, has a high degree of automation, greatly improves the work efficiency, and the driving motor is in a low-speed operation state with low energy consumption.

[0024] 2. By arranging a cleaning assembly inside the filter bucket, the number of cleaning arms in the cleaning assembly is the same as the number of groups of filter holes on the side wall of the filter bucket, the arrangement position of the ejector pins on the outer surface of each cleaning arm corresponds to the arrangement position of each group of filter holes, and the outer diameter of the ejector pins is smaller than the inner diameter of the filter holes, which can ensure that the ejector pins accurately enter the filter holes, so that the ejector pins can be inserted into the filter holes to play a role in clearing, thereby always keeping the filter holes on the filter bucket clean and ensuring that the filter bucket can always be in an efficient working state.

[0025] 3. During the flipping process of the storage trough, the push rod and the baffle are linked to push the baffle to automatically flip up, so that the initially dehydrated sludge can enter the filter press assembly through the upper mud discharge port; after the arc block at the bottom of the storage trough loses the thrust of the ball at the outer end of the driving arm, the storage trough can rebound and reset with the help of the first spring, and the push rod is used again to pull the baffle back to its original position to block the upper mud discharge port, providing good conditions for dehydrating the sludge again.

[0026] 4. By setting a number of partitions on the outer surface of the filter bucket, the outer surface of the filter bucket can be evenly divided into several areas, which guides the flow of the bottom mud, so that each throwing component can be evenly distributed with the initially dehydrated bottom mud, which is convenient for the next step of the filter press component to filter the bottom mud. The bottom mud that "escaped" from the gap of the slot hole during the process of flipping the storage tank and throwing mud can be dehydrated again in the lower dehydration mechanism, thereby ensuring the dehydration effect of the riverbed mud.

[0027] 5. The inner gear ring, the small gear and the large gear are arranged to reduce the speed of the rotation of the inner gear ring, thereby reducing the discharge frequency of the ball at the outer end of the driving arm driving the storage tank, so that the sludge can be retained in the dewatering cylinder for a longer time, and as much water as possible can be squeezed out of the sludge, which is convenient for the subsequent sludge filtration work.

[0028] 6. A number of mud discharge ports are evenly distributed along the circumference of the dewatering cylinder, and the position of each mud discharge port corresponds to the position of the feed port of a filter press chamber, and the storage tank is rotatably connected to the inside of the slot hole, so that the arc block can push the storage tank to flip when pushed by the sphere, so that the mud stored in the storage tank enters the filter press chamber through the mud discharge port and the feed port, and the baffle is rotatably connected to the mud discharge port. During the period of time when the mud is pumped into the dewatering cylinder, the baffle can prevent the mud in the dewatering cylinder from flowing out, and the downward thrust of the screw conveyor in the feed unit is used to increase the pressure of the mud at the top of the filter bucket, thereby increasing the dehydration intensity of the riverbed mud, improving the dehydration effect, and saving the operation time of subsequent filter pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional diagram of the appearance of the integrated riverbed sludge dredging and dehydration processing equipment of the present invention;

[0030] Figure 2 It is an axial cross-sectional view of the integrated riverbed sludge dredging and dehydration processing equipment of the present invention;

[0031] Figure 3 It is an exploded perspective view of the upper dehydration mechanism in the present invention;

[0032] Figure 4 It is a three-dimensional structural diagram of the upper dehydration mechanism in the present invention when viewed from above;

[0033] Figure 5 It is a three-dimensional structural diagram of the throwing material assembly in the present invention;

[0034] Figure 6 It is a three-dimensional structural diagram of the cleaning component in the present invention;

[0035] Figure 7 for Figure 6 Enlarged view of the middle C area;

[0036] Figure 8 for Figure 4 Enlarged view of the B area;

[0037] Fig. 9 It is a three-dimensional structural diagram of the driving assembly in the present invention;

[0038] Fig.10 for Fig. 9 Enlarged view of the D part in the middle;

[0039] Fig.11 It is a schematic diagram of the three-dimensional structure of the filter press assembly in the present invention;

[0040] Fig.12 for Figure 2 A magnified view of the middle A area;

[0041] Fig.13 It is a three-dimensional structural diagram of the reflux mechanism in the present invention. DETAILED DESCRIPTION

[0042] The present invention will be further described below in conjunction with the accompanying drawings.

[0043] See also Figures 1 to 13 The riverbed mud dredging and dehydration integrated processing equipment of the present invention comprises a base 1, a dehydration unit 2 fixed on the top of the base 1, and a feeding unit 3 arranged on the top of the dehydration unit 2.

[0044] The feeding unit 3 includes a storage tank 31, a feeding pipe 32 connected to the upper part of the side wall of the storage tank 31, and a screw conveyor arranged in the storage tank 31; the screw conveyor includes a first transmission shaft 34 that passes through the top cover of the storage tank 31, a driving motor 33 fixed on the top surface of the storage tank 31 and connected to the first transmission shaft 34, and an auger blade 35 installed on the first transmission shaft 34.

[0045] The dehydration unit 2 includes a dehydration cylinder 20 , a plurality of filter press assemblies 8 and a plurality of reflux mechanisms 9 .

[0046] The dewatering cylinder 20 is coaxially connected to the bottom surface of the storage tank 31. An upper material guide hopper 21, an upper dewatering mechanism 4, a lower material guide hopper 22 and a lower dewatering mechanism 5 are arranged in sequence from top to bottom in the dewatering cylinder 20. The upper part and the lower part of the side wall of the dewatering cylinder 20 are evenly distributed along the circumference to open a plurality of upper mud discharge ports 6 corresponding to the upper dewatering mechanism 4 and a plurality of lower mud discharge ports 7 corresponding to the lower dewatering mechanism 5. The lower part of the side wall of the dewatering cylinder 20 is opened with a drainage hole 23.

[0047] In this embodiment, the number of the upper mud discharge ports 6 and the number of the lower mud discharge ports 7 are both four, and accordingly, the number of the filter press components 8 and the number of the reflux mechanisms 9 are also four.

[0048] The upper dehydration mechanism 4 includes a filter hopper 41 , four throwing components 45 , a cleaning component 46 and a driving component 469 .

[0049] The filter bucket 41 includes a circular top plate and a conical side wall connected to the edge of the top plate; wherein, the circular top plate is provided with an axial hole located in the center and two guide holes located symmetrically around the axial hole; the conical side wall is provided with four rectangular slots 43 evenly distributed along the circumference corresponding to the four upper mud discharge ports 6 on the dewatering cylinder 20, and an umbrella-shaped partition plate 42 is fixed in the middle of each two adjacent slots 43 on the conical side wall, and a guide plate 44 is fixed between the two sides of the top of each slot 43 and the side of the partition plate 42 on the conical side wall, and an arc rod through hole 412 is provided in the middle of the top of each slot 43; a plurality of groups of filter holes 411 are provided in a radial manner between every two partition plates 42 on the conical side wall.

[0050] Four throwing components 45 are arranged in four slots 43 in a one-to-one correspondence; each throwing component 45 includes a storage tank 451, an arc rod 453, a first spring 454, an arc block 452, two push rods 455 and a baffle 456; wherein the storage tank 451 is a semi-cylindrical tank, and the shape and size of the slot of the storage tank 451 are adapted to the shape and size of the slot 43; the arc rod 453 is inserted into the arc rod through hole 412 on the filter bucket 41, and the upper end of the arc rod 453 is fixed to the middle of the top of the slot of the storage tank 451 through a blocking plate 4531, and the lower end of the arc rod 453 is fixed to the middle of the top of the slot of the storage tank 451 through a blocking plate 4531. A spring seat 4532 is provided at the end; the first spring 454 is sleeved on the arc rod 453 and is located between the conical side wall of the filter bucket 41 and the spring seat 4532, so that the trough body of the storage trough 451 is located inside the filter bucket 41, and the notch seals the slot hole 43 of the filter bucket 41; the arc block 452 is fixed to the bottom of the storage trough 451; one end of the two push rods 455 is hinged to the upper parts of both sides of the notch of the storage trough 451 one by one; the baffle 456 is hinged between the two side walls of the upper mud discharge port 6, and the lower parts of both sides of the inner end surface of the baffle 456 are hinged to the other ends of the two push rods 455 one by one.

[0051] The cleaning assembly 46 is arranged inside the filter bucket 41 and includes a second transmission shaft 461, a sleeve 462, a bearing plate 464, two guide rods 466, a plurality of cleaning arms 467, two wedge blocks 468 and a driving assembly; wherein the second transmission shaft 461 is inserted into the axial hole on the circular top plate of the filter bucket 41 and is coaxially connected to the lower end of the first transmission shaft 34; the sleeve 462 is rotatably sleeved on the second transmission shaft 461, and four guide grooves 463 are axially arranged evenly along the circumference on the side wall of the sleeve 462, and the top of each guide groove 463 is respectively connected to the upper end of a second spring 465; a through hole with an inner diameter matching the outer diameter of the sleeve 462 is arranged in the center of the bearing plate 464, and four sliders corresponding to the four guide grooves 463 on the sleeve 462 are evenly arranged on the hole wall of the through hole, and the bearing plate 464 is connected to the four sliders one by one The filter hopper 41 is provided with a plurality of cleaning arms 467, each of which is provided with a plurality of cleaning arms 468. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 468. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 468. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 468. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 467. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 467. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 467. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 467. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 467. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 467. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 467. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 467. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 467. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 467. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 467. The plurality of cleaning arms 467 are provided with a plurality of cleaning arms 467.

[0052] The driving assembly 469 is arranged below the cleaning assembly 46 and includes a bearing seat 4691, an inner gear ring 4692, three small gears 4693, a large gear 4696, four driving arms 4694 and two driving rods 4697; wherein the bearing seat 4691 is fixedly connected to the inner wall of the dehydration cylinder 20 through two supporting rods 4690; the inner gear ring 4692 is rotatably mounted in an annular groove provided on the top surface of the bearing seat 4691 through a rotating ring coaxially connected at the bottom; the three small gears 4693 are each evenly mounted on the bearing seat 4691 through a rotating shaft. The large gear 4696 is fixed on the second transmission shaft 461 and meshes with the three small gears 4693 respectively; four driving arms 4694 are evenly connected to the outer circumference of the inner gear ring 4692, and a sphere 4695 in contact with the bottom surface of the arc block 452 at the bottom of the storage trough 451 is fixed on the outer end of each driving arm 4694; two driving rods 4697 and two wedge blocks 468 on the bottom surface of the supporting plate 464 are fixed on the top surface of the inner gear ring 4692 in a one-to-one correspondence.

[0053] The structure of the lower dehydration mechanism 5 is the same as that of the upper dehydration mechanism 4 .

[0054] Four filter press assemblies 8 and four upper mud discharge ports 6 are mounted on the outer surface of the dewatering cylinder 20 in a one-to-one correspondence; each filter press assembly includes a filter press chamber 81, a filter press mechanism and a sealing mechanism; wherein,

[0055] The filter press chamber 81 is fixed on the outer surface of the dewatering cylinder 20. The upper part of the inner end wall of the filter press chamber 81 is provided with a feed inlet 83 opposite to the upper mud discharge port 6 on the dewatering cylinder 20; the lower part of the inner end wall of the filter press chamber 81 is provided with a dewatering hole 811 connected with the inner cavity of the dewatering cylinder 20; and a return hole 812 is provided in the middle of a side wall of the filter press chamber 81;

[0056] The filter press mechanism includes a filter plate 84 fixed to the lower part of the inner cavity of the filter press chamber 81 and located above the dehydration hole 811, a pressing plate 88 movably arranged above the filter plate 84, and an oil cylinder 89 fixed to the outer surface of the dehydration cylinder 20 and having a piston rod passing through the top wall of the filter press chamber 81 and connected to the center of the top surface of the pressing plate 88;

[0057] The sealing mechanism includes two transverse grooves (not shown in the figure) which are opened in the middle of the inner surfaces of the two side walls of the filter press chamber 81 in a one-to-one manner, two tie rods 85 which are slidably connected in the two transverse grooves in a one-to-one manner, a push plate 86 which is located in the inner cavity of the filter press chamber 81 and connected to the inner ends of the two tie rods 85, a sealing door 87 which is connected to the outer ends of the two tie rods 85, and an electric telescopic rod 82 which is fixed on the bottom surface of the filter press chamber 81 and connected to the center of the outer end surface of the sealing door 87 through a transition rod 820.

[0058] Four reflux mechanisms 9 are installed on the outer surface of the dewatering cylinder 20 in a one-to-one correspondence with four lower mud discharge ports 7; each reflux mechanism includes a collection chamber 91, a delivery pipe 93, a one-way valve 94 and a mud pump 95; wherein, the collection chamber 91 is fixed on the outer surface of the dewatering cylinder 20, a recovery port 92 is opened on the upper part of the inner end wall of the collection chamber 91 relative to the lower mud discharge port 7 on the dewatering cylinder 20, and a feeding hole is opened on the bottom wall of the collection chamber 91; the delivery pipe 93 is connected between the feeding hole of the collection chamber 91 and the return hole 812 of the filter press chamber 81; the one-way valve 94 is installed on the delivery pipe 93; the mud pump 95 is installed on the delivery pipe 93 and close to the feeding hole of the collection chamber 91.

[0059] The riverbed mud dredging and dewatering integrated treatment equipment of the present invention, the mud enters the dewatering unit 2 through the feeding unit 3, the mud preliminarily filtered and dehydrated by the upper dewatering mechanism 4 enters the filter press assembly 8 through the upper mud discharge port 6, and is squeezed and dehydrated again by the filter press assembly 8 to form blocks; the lower dewatering mechanism 5 dewaters the mud escaping from the upper dewatering mechanism 4 again, and the mud filtered by the lower dewatering mechanism 5 enters the reflux mechanism 9 through the lower mud discharge port 7, and is transported to the filter press assembly 8 by the reflux mechanism 9.

[0060] The riverbed mud dredging and dewatering integrated processing equipment of the present invention comprises the following steps during operation:

[0061] River dredging steps: The riverbed mud dredging and dehydration integrated processing equipment of the present invention is installed on the dredging ship with the help of the base 1, and the riverbed mud is sucked into the feeding unit 3 by the mud suction pump. The riverbed mud enters the storage tank 31 through the feeding pipe 32, and the first transmission shaft 34 and the second transmission shaft 461 are rotated by the driving motor 33, thereby driving the auger blade 35 to push the riverbed mud downward to the dehydration cylinder 20 of the dehydration unit 2; the speed of the driving motor 33 is 6r / min;

[0062] Preliminary dehydration step: The riverbed mud is subjected to the dual force of gravity and the screw conveyor of the feed unit 3 and falls through the upper guide hopper 21 onto the outer surface of the conical side wall of the filter bucket 41 of the upper dehydration mechanism 4 in the dehydration cylinder 20. The riverbed mud is squeezed by the thrust of the screw conveyor, and part of the water inside it flows to the bottom of the dehydration cylinder 20 through the filter holes 411 on the filter bucket 41 under pressure; the four partition plates 42 divide the outer surface of the conical side wall of the filter bucket 41 into four areas of equal area, so that the riverbed mud is distributed to the four areas, and the guide plate 44 can separate the riverbed mud on the outer surface of the conical side wall of the filter bucket 41. The material throwing assembly 45 is introduced into the storage trough 451 in the four slot holes 43; when the material throwing assembly 45 is not driven by external force, the baffle 456 can block the upper mud discharge port 6, so that the riverbed mud is temporarily stored in the four storage troughs 451; when the second transmission shaft 461 drives the four driving arms 4694 to rotate one by one to the bottom of the four storage troughs 451 through the large gear 4696, the small gear 4693 and the inner gear ring 4692 in sequence, and the ball 4695 at the outer end of each driving arm 4694 pushes the arc block 452 at the bottom of the corresponding storage trough 451 upward, so that the storage trough 451 overcomes the pressure of the first spring 454 and flips outward, and the storage During the overturning process of the trough 451, the baffle plate 456 is automatically overturned outward and upward with the help of two push rods 455 to open the upper mud discharge port 6, so that the initially dehydrated bottom mud can enter the filter press assembly 8 through the upper mud discharge port 6; when the arc block 452 loses the thrust of the ball 4695, the storage trough 451 rebounds and resets with the help of the first spring 454, and the baffle plate 456 is pulled back to the original position by the two push rods 455 again to block the upper mud discharge port 6. At the same time, the top ends of the two driving rods 4697 that rotate synchronously with the driving arm 4694 correspond to each other and push the two wedge blocks 468 on the bottom surface of the bearing plate 464 upward, driving the bearing plate 464 to move upward. The plate 464 overcomes the pressure of the four second springs 465 and moves up along the outer surface of the sleeve 462. When the driving rod 4697 pushes the supporting plate 464 up to the limit position, the ejectors on the cleaning arms 467 fixed on the outer circumferential surface of the supporting plate 464 are inserted into the groups of filter holes 411 on the conical side wall of the filter bucket 41 one by one, thereby playing the role of dredging the filter holes 411. After the two driving rods 4697 are separated from the two wedge blocks 468, the supporting plate 464 is rebounded and reset with the help of the four second springs 465, and at the same time, the ejectors on the cleaning arms 467 are separated from the groups of filter holes 411 one by one.

[0063] Secondary dehydration step: After the initially dehydrated sludge enters the filter press assembly 8 through the upper sludge discharge port 6, the piston rod of the oil cylinder 89 is controlled by the controller to extend downward once every two minutes, so that the pressing of the pressing plate 88 continues for one minute, and the piston rod of the oil cylinder 89 is extended and retracted for half a minute each; the sludge entering the filter press chamber 81 is squeezed multiple times by the pressing plate 88, and the water in the sludge is further squeezed out to form a block, and the squeezed water is discharged into the dehydration cylinder 20 through the dehydration hole 811 on the inner end wall of the filter press chamber 81; then the sealing door 87 of the filter press chamber 81 is opened by the electric telescopic rod 82, and the formed block is pushed out by the push plate 86 The formed mud blocks are pulled out of the filter press chamber 81; and during the turning process of the storage tank 451 of the upper dewatering mechanism 4, the bottom mud escaping from the gap of the slot hole 43 enters the lower dewatering mechanism 5 from the lower guide hopper 22 in the dewatering cylinder 20, and after being filtered by the lower dewatering mechanism 5, it enters the collecting chamber 91 through the lower mud discharge port 7 on the dewatering cylinder 20 and the recovery port 92 of the collecting chamber 91, and then the mud is pumped into the filter press assembly 8 with the help of the mud pump 95; since the one-way valve 94 only allows the mud to enter the filter press assembly 8 through the collecting chamber 91, it can ensure that the mud will not flow back into the collecting chamber 91 when the filter press assembly 8 is working.

[0064] The driving arm 4694 rotates once every four minutes. When the ball 4695 at the outer end of the driving arm 4694 pushes the arc block 452 at the bottom of the storage tank 451, the oil cylinder 89 in the filter press assembly 8 has just finished the squeezing action, and the pressure plate 88 has risen to the top of the filter press chamber 81, and does not interfere with the outward flipping of the baffle 456.

[0065] By providing an inner gear ring 4692, a small gear 4693 and a large gear 4696, the rotation of the inner gear ring 4692 is decelerated, and the frequency of the ball 4695 at the outer end of the driving arm 4694 pushing the throwing assembly 45 to discharge the material is reduced, so that the bottom mud can be retained in the dewatering cylinder 20 for a longer time, and as much water as possible in the bottom mud can be squeezed out, so as to facilitate the subsequent filtration work of the filter press assembly 8.

[0066] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Those skilled in the relevant technical field may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. A riverbed sludge dredging and dehydration integrated processing equipment, comprising a base, a dehydration unit fixed on the top of the base, and a feeding unit arranged on the top of the dehydration unit; characterized in that: The feeding unit comprises a storage tank, a feeding pipe connected to the upper part of the side wall of the storage tank, and a screw conveyor arranged in the storage tank; The dehydration unit comprises a dehydration cylinder and a plurality of filter press assemblies and a plurality of reflux mechanisms installed on the outer surface of the dehydration cylinder; the dehydration cylinder is coaxially connected to the bottom surface of the storage tank, and an upper guide hopper, an upper dehydration mechanism, a lower guide hopper and a lower dehydration mechanism are sequentially arranged in the dehydration cylinder from top to bottom; a plurality of upper mud discharge ports corresponding to the upper dehydration mechanism and a plurality of filter press assemblies are uniformly arranged on the upper part of the side wall of the dehydration cylinder along the circumference, a plurality of lower mud discharge ports corresponding to the lower dehydration mechanism and a plurality of reflux mechanisms are uniformly arranged on the lower part of the side wall of the dehydration cylinder along the circumference, and a drainage hole is arranged on the lower part of the side wall of the dehydration cylinder; a plurality of reflux mechanisms are respectively connected to a plurality of filter press assemblies one by one through a conveying pipe; The sludge enters the dehydration unit through the feeding unit, and after being initially filtered and dehydrated by the upper dehydration mechanism, the sludge enters the filter press assembly through the upper mud discharge port, and is squeezed and dehydrated again by the filter press assembly to form a block; The lower dewatering mechanism dewaters the sludge that escapes from the upper dewatering mechanism again. The sludge filtered by the lower dewatering mechanism enters the reflux mechanism through the lower sludge outlet and is transported to the filter press assembly by the reflux mechanism. The upper dehydration mechanism includes a filter hopper, a plurality of throwing components, a cleaning component and a driving component; The filter bucket comprises a circular top plate and a conical side wall connected to the edge of the top plate; wherein the circular top plate is provided with an axial hole located in the center and two guide holes located symmetrically around the axial hole; the conical side wall is provided with a plurality of groups of filter holes in a radial shape, the lower part of the conical side wall is provided with a plurality of slot holes evenly distributed along the circumference corresponding to the plurality of upper mud discharge ports on the dewatering cylinder, and an arc-shaped rod through hole is provided in the middle of the top of each slot hole; A plurality of throwing material assemblies are arranged in a plurality of slots in a one-to-one correspondence, and the throwing material assemblies include a material storage trough and an arc-shaped rod, the slot of the material storage trough is adapted to the slot on the filter bucket; the arc-shaped rod is slidably inserted into the arc-shaped rod through-hole on the filter bucket; The cleaning assembly is arranged inside the filter bucket, and the cleaning assembly includes a plurality of cleaning arms, the number of the cleaning arms is the same as the number of groups of filter holes on the filter bucket, and a group of ejectors corresponding to a group of filter holes on the filter bucket are fixed on the outer surface of each cleaning arm; The driving assembly is arranged below the cleaning assembly; The structure of the lower dehydration mechanism is the same as that of the upper dehydration mechanism.

2. The integrated riverbed dredging and dewatering treatment equipment according to claim 1 is characterized in that: The screw conveyor comprises a first transmission shaft which passes through the top cover of the storage tank, a driving motor which is fixed on the top surface of the storage tank and connected to the first transmission shaft, and an auger blade installed on the first transmission shaft.

3. The integrated riverbed dredging and dewatering treatment equipment according to claim 1 is characterized in that: The throwing assembly also includes a first spring, an arc block, two push rods and a baffle; wherein the upper end of the arc rod is fixed to the middle of the top of the notch of the storage tank through a blocking plate; the first spring is sleeved on the arc rod located inside the filter bucket, so that the notch of the storage tank seals the slot hole of the filter bucket; the arc block is fixed to the bottom of the storage tank; one end of the two push rods is hinged to the upper parts of both sides of the notch of the storage tank in a one-to-one correspondence; the baffle is hinged between the two side walls of the upper mud discharge port, and the lower parts of both sides of the inner end surface of the baffle are hinged to the other ends of the two push rods in a one-to-one correspondence; The cleaning assembly also includes a second transmission shaft, a sleeve, a bearing plate, two guide rods and two wedge blocks; wherein the second transmission shaft is inserted into the shaft hole on the filter bucket and is coaxially connected to the lower end of the first transmission shaft in the screw conveyor; the sleeve is rotatably sleeved on the second transmission shaft, and a plurality of guide grooves are uniformly distributed along the circumference and axially on the wall of the sleeve, and the top of each guide groove is respectively connected to the upper end of a second spring; a through hole with an inner diameter matching the outer diameter of the sleeve is provided in the center of the bearing plate, and the hole wall of the through hole is A plurality of sliders are evenly protruded and correspond to the plurality of guide grooves on the sleeve. The bearing plate is slidably mounted on the sleeve in a manner that the plurality of sliders are embedded in the plurality of guide grooves in a one-to-one manner, and the top surfaces of the plurality of sliders are connected to the lower ends of the plurality of second springs. Two guide rods are centrally symmetrically fixed on the top surface of the bearing plate and are correspondingly inserted into the two guide holes on the filter bucket. A plurality of cleaning arms are connected to the outer peripheral surface of the bearing plate in the shape of umbrella ribs. Two wedge-shaped blocks are centrally symmetrically fixed on the bottom surface of the bearing plate. The driving assembly includes a bearing seat, an inner gear ring, three small gears, a large gear, a plurality of driving arms and two driving rods; wherein, the bearing seat is fixedly connected to the inner wall of the dehydration cylinder through two supporting rods; the inner gear ring is rotatably mounted on the top surface of the bearing seat; the three small gears are evenly mounted on the top surface of the bearing seat through a rotating shaft and mesh with the inner gear ring; the large gear is fixed on the second transmission shaft and meshes with the three small gears respectively; the number of the driving arms is the same as the number of the throwing assemblies, and a plurality of driving arms are evenly connected to the outer circumferential surface of the inner gear ring, and a sphere is fixed to the outer end of each driving arm, which contacts the bottom surface of the arc block at the bottom of the storage trough; two driving rods are fixed on the top surface of the inner gear ring in a one-to-one correspondence with the two wedge blocks on the bottom surface of the bearing plate.

4. The integrated riverbed dredging and dewatering treatment equipment according to claim 3 is characterized in that: A plurality of partition plates are fixed in a radial shape on the conical side wall of the filter bucket; a material guide plate is respectively fixed between the top two sides of each slot hole and the side surface of the partition plate on the conical side wall.

5. The integrated riverbed dredging and dewatering treatment equipment according to claim 1 is characterized in that: The filter press assembly comprises a filter press chamber, a filter press mechanism and a sealing mechanism; wherein, The filter press chamber is fixed on the outer surface of the dehydration cylinder, and a feed port is provided at the upper part of the inner end wall of the filter press chamber relative to the upper mud discharge port; a dehydration hole connected to the inner cavity of the dehydration cylinder is provided at the lower part of the inner end wall of the filter press chamber; a return hole is provided in the middle part of one of the side walls of the filter press chamber; The filter press mechanism comprises a filter plate fixed at the lower part of the inner cavity of the filter press chamber and located above the dehydration hole, a pressing plate movably arranged above the filter plate, and an oil cylinder fixed on the outer surface of the dehydration cylinder and having a piston rod passing through the top wall of the filter press chamber and connected to the center of the top surface of the pressing plate; The sealing mechanism includes two transverse slide grooves which are correspondingly opened in the middle of the inner surfaces of the two side walls of the filter press chamber, two pull rods which are correspondingly slidably connected in the two transverse slide grooves, a push plate which is located in the inner cavity of the filter press chamber and connected to the inner ends of the two pull rods, a sealing door which is connected to the outer ends of the two pull rods, and an electric telescopic rod which is fixed on the bottom surface of the filter press chamber and connected to the center of the outer end surface of the sealing door through a transition rod.

6. The integrated riverbed dredging and dewatering treatment equipment according to claim 1 is characterized in that: The reflux mechanism includes a collection chamber, a delivery pipe, a one-way valve and a mud pump; the collection chamber is fixed on the outer surface of the dewatering cylinder, a recovery port is provided on the upper part of the inner end wall of the collection chamber relative to the lower mud discharge port on the dewatering cylinder, and a feeding hole is provided on the bottom wall of the collection chamber; the delivery pipe is connected between the feeding hole of the collection chamber and the filter press assembly; the one-way valve is arranged on the delivery pipe; the mud pump is installed on the delivery pipe and close to the feeding hole of the collection chamber.

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