A riverbed sludge dewatering device

Abstract

The present invention discloses a riverbed sludge dewatering device, comprising: a mounting frame; a centrifugal limiting shell, which is arranged on the mounting frame, and a drain pipe is arranged at the bottom of the centrifugal limiting shell for discharging water after sludge dewatering; a centrifugal drive assembly, which is arranged obliquely on the centrifugal limiting shell and is used for centrifugal dewatering of riverbed sludge; a feeding assembly, which is arranged on the mounting frame and is used for feeding sludge to the centrifugal drive assembly; a filter press push-out assembly, which is arranged on the centrifugal drive assembly and connected to the feeding assembly, and is used to filter press the mud cake after centrifugal dewatering and push the filter press mud cake into a mud collection tank while the centrifugal drive assembly is running. The present invention can synchronously drive the interconnected centrifugal drive assembly and the filter press push-out assembly to operate, thereby enabling the entire device to perform filter press treatment on the sludge while centrifugally dewatering the sludge, so as to reduce the moisture content of the sludge after the centrifugal dewatering operation.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, and in particular to a riverbed sludge dewatering device. Background Art

[0002] Silt is generally deposited in urban rivers. It is an unconsolidated soft fine-grained or ultra-fine-grained soil formed by physical, chemical and biochemical reactions. It contains rich organic matter and nutrients such as N and P, which can provide certain growth and living conditions for aquatic organisms. In order to ensure the survival of animals and plants in the water and reduce water pollution in the river, quantitative cleaning of river dredging has become a necessary task to keep the river clean and protect the growth environment of river water organisms.

[0003] In order to recycle and reduce pollution during the dredging process of existing riverbed silt, it is generally necessary to dehydrate the cleared riverbed silt. Common sludge dehydration generally uses a belt filter press or a plate and frame filter press. The belt filter press can only dehydrate to a moisture content of about 50%, and the belt filter press has large equipment loss, while the plate and frame filter press has a long dehydration cycle and low efficiency.

[0004] Therefore, in order to improve the dewatering quality of sludge, decanter centrifuges are generally used in the market for dewatering sludge. However, the existing decanter centrifuges require high-speed rotation of the drum and require multiple bearings and differential connections for use. The structure is complex and the operating cost is also high.

[0005] To this end, the present application specifically proposes a riverbed sludge dewatering device that uses a simple structure to achieve centrifugal dewatering of sludge and simultaneously achieves a filter press effect to solve the above technical problems. Summary of the Invention

[0006] The main purpose of the present invention is to provide a riverbed sludge dewatering device with a simple structure, which can perform centrifugal dewatering on the sludge and filter press the sludge at the same time to reduce the dewatering water content of the sludge.

[0007] The present invention adopts the following technical solutions to solve the above technical problems:

[0008] A riverbed sludge dewatering device, comprising:

[0009] A mounting frame is provided on which a water collecting trough for collecting water flow after sludge dehydration and a mud collecting trough for collecting mud cake after sludge dehydration are provided;

[0010] A centrifugal limiting housing is provided on the mounting frame, and a drain pipe is provided at the bottom of the centrifugal limiting housing for discharging water after sludge dehydration;

[0011] The centrifugal drive assembly is obliquely arranged on the centrifugal limit housing and is used for centrifugal dewatering of riverbed silt;

[0012] A feed assembly, disposed on the mounting frame and used to feed sludge to the centrifugal drive assembly;

[0013] The filter press pushing assembly is arranged on the centrifugal drive assembly and connected to the feed assembly. It is used to filter the mud cake after centrifugal dehydration and push the filtered mud cake into the mud collection tank while the centrifugal drive assembly is running.

[0014] Preferably, the centrifugal drive assembly includes a centrifugal mounting seat 1 and a centrifugal mounting seat 2 rotating at both ends of the centrifugal limit shell, multiple groups of centrifugal sleeves fixedly penetrated on the centrifugal mounting seat 1 and the centrifugal mounting seat 2 and arranged in parallel, multiple water filter holes arranged on the centrifugal sleeves, a centrifugal rotating shaft fixedly penetrated in the middle of the centrifugal mounting seat 1 and the centrifugal mounting seat 2, and a driving member arranged at one end of the centrifugal rotating shaft for driving the centrifugal rotating shaft to rotate.

[0015] Preferably, the centrifugal drive assembly further comprises a limiting ring block provided on the centrifugal mounting seat 1 and the centrifugal mounting seat 2 for limiting the rotation of the centrifugal mounting seat 1 and the centrifugal mounting seat 2 on the centrifugal limiting housing.

[0016] Preferably, the feeding assembly includes a distribution pipe arranged on a centrifugal mounting seat and located outside the centrifugal shaft, a plurality of distribution shells arranged on the distribution pipe and connected one-to-one with the inside of the centrifugal sleeve, an installation pipe arranged on the mounting frame and sleeved on the outside of the centrifugal shaft for connecting to the distribution pipe, and a feeding funnel arranged on the installation pipe for sludge feeding, the installation pipe and the distribution pipe are connected by a limit assembly, and the driving member is installed on the installation pipe.

[0017] Preferably, the limiting assembly includes a rotating ring block arranged on the outside of one end of the installation pipe, a plurality of clamping blocks arranged at one end of the material distribution pipe, a clamping groove arranged on the clamping block for clamping the rotating ring block for limited rotation, a ball groove arranged in the clamping groove, and a connecting ball located in the ball groove for rolling on the rotating ring block.

[0018] Preferably, the filter press ejection assembly includes a blade shaft that rotates through the distribution shell and is located in the centrifugal casing, a spiral blade arranged on the blade shaft and rotates in the centrifugal casing, a limiting frame arranged on the centrifugal casing for limiting the rotation of the blade shaft, a connecting gear arranged at one end of the blade shaft, and a connecting gear ring arranged on the mounting pipe for engaging with the connecting gear.

[0019] Preferably, the spiral pitch of the spiral blades gradually narrows from centrifugal mounting seat 1 to centrifugal mounting seat 2.

[0020] Preferably, the feeding assembly further comprises a rotation limiter provided on the material distribution housing for the blade shaft to rotate on the material distribution housing.

[0021] Preferably, the filter press ejection assembly further comprises a separator provided on the centrifugal mounting seat 1 for separating the overall positions of the plurality of connecting gears when they rotate.

[0022] The present invention provides a riverbed sludge dewatering device. Compared with the prior art, the present invention has the following advantages:

[0023] 1. The present invention has a simple structure and is easy to manufacture. It can continuously feed sludge for dehydration operation, and can, through the cooperative connection of the feed assembly and the meshing of the connecting gear ring and the connecting gear, drive the centrifugal shaft to rotate while driving the blade shaft to rotate, thereby allowing the interconnected centrifugal drive assembly and the filter press ejection assembly to be driven synchronously. As a result, the entire device can perform centrifugal dehydration and filter press treatment on the sludge at the same time, thereby reducing the water content of the sludge after the centrifugal dehydration operation and ensuring the dehydration efficiency of the sludge.

[0024] 2. The present invention delivers the sludge into the centrifugal casing, drives the centrifugal shaft to rotate, and cooperates with two sets of centrifugal mounting seats to effectively perform centrifugal dehydration operations on the sludge in the centrifugal casing. The dehydrated water can be quickly discharged through the drain pipe, avoiding the continuous contact of water flow with the sludge during the dehydration process, resulting in poor dehydration effect, thereby improving the centrifugal dehydration efficiency of the sludge.

[0025] 3. The present invention arranges rotating spiral blades in the centrifugal casing. Since the spiral pitch of the spiral blades gradually narrows from centrifugal mounting seat one to centrifugal mounting seat two, during the process of centrifugal dehydration of the sludge, the spiral blades can cooperate with gravity to provide thrust for sludge discharge, and at the same time, can use the gradually narrowing pitch to squeeze the centrifugally dehydrated sludge to a certain extent, thereby achieving a filter press effect during sludge transportation and improving the overall dehydration effect of the sludge.

[0026] 4. The present invention sets a plurality of distribution shells connected to the centrifugal casing outside the distribution pipe, and uses the centrifugal shaft to control the rotation of the two sets of centrifugal mounting seats, which will drive the distribution pipe and the distribution shell to rotate synchronously. Since the powder pipe is limited to rotate on the mounting pipe by the limiting component, when the sludge enters the distribution pipe through the feed funnel and the mounting pipe in turn, the centrifugal force and gravity can be used to evenly feed the sludge into the distribution shell and then into the centrifugal casing for centrifugal dehydration operation, ensuring the normal centrifugal dehydration feeding of the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 The overall stereoscopic view of the present invention Figure 1 ;

[0029] Figure 2 The overall stereoscopic view of the present invention Figure 2 ;

[0030] Figure 3 It is a schematic perspective view of the overall connection structure of the centrifugal drive assembly of the present invention;

[0031] Figure 4 This is an exploded perspective diagram of the connection structure of the centrifugal drive assembly of the present invention;

[0032] Figure 5 This is a schematic diagram of the overall three-dimensional connection structure of the filter press ejection assembly of the present invention;

[0033] Figure 6 The overall three-dimensional diagram of the connection structure of the centrifugal drive assembly of the present invention Figure 1 ;

[0034] Figure 7 The overall three-dimensional diagram of the connection structure of the centrifugal drive assembly of the present invention Figure 2 ;

[0035] Figure 8 A three-dimensional schematic diagram of the structure of the feed assembly of the present invention Figure 2 ;

[0036] Figure 9 It is a three-dimensional cross-sectional schematic diagram of the limiting component of the present invention.

[0037] In the picture:

[0038] 1. Mounting frame; 11. Water collecting trough; 12. Mud collecting trough; 2. Centrifugal limiting shell; 21. Drain pipe; 3. Feed assembly; 31. Feed hopper; 32. Mounting pipe; 33. Distribution pipe; 34. Limiting assembly; 341. Rotating ring block; 342. Clamping block; 343. Clamping groove; 344. Ball groove; 345. Connecting ball; 35. Distribution shell; 36. Rotating limiting member; 4. Centrifugal drive assembly; 41. Drive member; 42. Centrifugal shaft; 43. Centrifugal mounting seat 1; 44. Centrifugal mounting seat 2; 45. Centrifugal sleeve; 46. Water filter hole; 47. Limiting ring block; 5. Filter press ejection assembly; 51. Spiral blade; 52. Blade shaft; 53. Limiting frame; 54. Connecting gear; 55. Connecting gear ring; 56. Separator. DETAILED DESCRIPTION

[0039] 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] In the embodiment, see Figures 1 to 9 .

[0041] like Figures 1 to 4 As shown, the present invention provides a riverbed sludge dewatering device, comprising:

[0042] The mounting frame 1 is provided with a water collecting trough 11 for collecting the water flow after the sludge is dehydrated and a mud collecting trough 12 for collecting the mud cake after the sludge is dehydrated;

[0043] The centrifugal limiting housing 2 is obliquely arranged on the mounting frame 1. A drainage pipe 21 is provided at the bottom of the centrifugal limiting housing 2 for discharging water after sludge dehydration.

[0044] The centrifugal drive assembly 4 is provided on the centrifugal limit housing 2 and is used for centrifugal dewatering of riverbed sludge;

[0045] A feed assembly 3 is provided on the mounting frame 1 for feeding sludge to the centrifugal drive assembly 4;

[0046] The filter press pushing assembly 5 is arranged on the centrifugal drive assembly 4 and connected to the feed assembly 3. It is used to filter the mud cake after centrifugal dehydration and push the filtered mud cake into the mud collecting tank 12 while the centrifugal drive assembly 4 is running.

[0047] In specific implementation, after the sludge enters the device through the feeding component 3, it can be dehydrated by the synchronous driving of the centrifugal drive component 4 and the filter press pushing component 5. The water flow after the sludge is dehydrated enters the water collecting tank 11 through the drain pipe 21 in the centrifugal limit shell 2 for collection. The mud cake after the sludge is dehydrated is discharged from the centrifugal limit shell 2 through the filter press pushing component 5 with the help of gravity, and falls into the mud collecting tank 12 for collection.

[0048] Among them Figure 4 、 Figure 6 and Figure 7As shown, the centrifugal drive assembly 4 includes a centrifugal mounting seat 1 43 and a centrifugal mounting seat 2 44 that rotate at both ends of the centrifugal limit shell 2, a plurality of centrifugal sleeves 45 fixedly penetrated on the centrifugal mounting seat 1 43 and the centrifugal mounting seat 2 44 and arranged in parallel, a plurality of water filter holes 46 arranged on the centrifugal sleeves 45, a centrifugal rotating shaft 42 fixedly penetrated in the middle of the centrifugal mounting seat 1 43 and the centrifugal mounting seat 2 44, and a driving member 41 arranged at one end of the centrifugal rotating shaft 42 for driving the centrifugal rotating shaft 42 to rotate.

[0049] Specifically, the driving member 41 controls the rotation of the centrifugal shaft 42 to drive the centrifugal mounting seat 1 43 and the centrifugal mounting seat 2 44 to rotate. Since the centrifugal sleeve 45 is fixedly mounted on the centrifugal mounting seat 1 43 and the centrifugal mounting seat 2 44, when the centrifugal shaft 42 rotates, the centrifugal sleeve 45 can also be centrifugally rotated with the centrifugal shaft 42 as the rotating axis to complete the dehydration operation. Compared with the traditional screw-type dehydration centrifuge, it can have a better centrifugal dehydration effect, consume less energy under the same dehydration effect, save more resources, and greatly reduce the operating cost.

[0050] During the implementation, the sludge is sent into the centrifugal sleeve 45, the centrifugal shaft 42 is driven to rotate, and the two sets of centrifugal mounting seats are used to effectively perform centrifugal dehydration on the sludge in the centrifugal sleeve 45, and the dehydrated water can be quickly discharged through the drain pipe 21, avoiding the continuous contact of water flow with the sludge during the dehydration process, resulting in poor dehydration effect, thereby improving the centrifugal dehydration efficiency of the sludge.

[0051] It should be noted that the position of the driving member 41 is fixed, and the centrifugal shaft 42 is only installed on the rotating drive shaft of the driving member 41. The driving member 41 here can directly adopt a servo motor as shown in the accompanying drawings, or it can adopt other motor structures or other mechanical structures with rotational driving effects.

[0052] In addition, the centrifugal drive assembly 4 also includes a limiting ring block 47 arranged on the centrifugal mounting seat 1 43 and the centrifugal mounting seat 2 44 for limiting the rotation of the centrifugal mounting seat 1 43 and the centrifugal mounting seat 2 44 on the centrifugal limiting shell 2. When the centrifugal mounting seat 1 43 and the centrifugal mounting seat 2 44 rotate, the limiting ring block 47 can also support the centrifugal mounting seat 1 43 and the centrifugal mounting seat 2 44, thereby improving the overall strength of the device.

[0053] It should be noted that the limiting ring block 47 can be set to rotate on the outside of the centrifugal limiting shell 2 as shown in the accompanying drawings, or it can be limited and rotated on the inner wall of the centrifugal limiting shell 2. At this time, it is necessary to ensure the waterproofness of the connection between the centrifugal limiting shell 2 and the two sets of centrifugal mounting seats.

[0054] like Figure 3 、 Figure 5 、 Figure 7 and Figure 8As shown, the feeding assembly 3 includes a distribution pipe 33 arranged on a centrifugal mounting seat 43 and located outside the centrifugal shaft 42, a plurality of distribution shells 35 arranged on the distribution pipe 33 and connected one-to-one with the inside of the centrifugal sleeve 45, a mounting pipe 32 arranged on the mounting frame 1 and sleeved on the outside of the centrifugal shaft 42 for connecting to the distribution pipe 33, and a feeding funnel 31 arranged on the mounting pipe 32 for sludge feeding. The mounting pipe 32 and the distribution pipe 33 are connected by a limit assembly 34, and the driving member 41 is installed on the mounting pipe 32.

[0055] In the specific implementation, multiple distribution shells 35 connected to the centrifugal sleeve 45 are located outside the distribution pipe 33 and are evenly distributed in an annular shape. The center of the annular shape is the position of the distribution pipe 33. At this time, the centrifugal shaft 42 is used to control the rotation of the two sets of centrifugal mounting seats, which will drive the distribution pipe 33 and the distribution shell 35 to rotate synchronously. Since the powder pipe is limited to rotate on the mounting pipe 32 by the limiting component 34, when the sludge enters the distribution pipe 33 through the feed funnel 31 and the mounting pipe 32 in turn, the centrifugal force and gravity can be used to evenly feed the sludge into the distribution shell 35 and then into the centrifugal sleeve 45 for centrifugal dehydration operation, ensuring the normal centrifugal dehydration feeding of the sludge.

[0056] Among them Figure 9 As shown, the limiting assembly 34 includes a rotating ring block 341 arranged on the outside of one end of the installation pipe 32, a plurality of clamping blocks 342 arranged at one end of the distribution pipe 33, a clamping groove 343 arranged on the clamping block 342 for clamping the rotating ring block 341 for limiting rotation, a ball groove 344 arranged in the clamping groove 343, and a connecting ball 345 located in the ball groove 344 for rolling on the rotating ring block 341.

[0057] When the centrifugal mounting seat drives the distribution pipe 33 and the distribution shell 35 to rotate synchronously, since the mounting pipe 32 is fixed in position by the mounting frame 1, when the distribution pipe 33 rotates at one end of the mounting pipe 32, the engagement of the slot 343 and the rotating ring block 341 can limit the rotation position of the distribution pipe 33. At this time, the connecting ball 345 can ensure that the friction between the distribution pipe 33 and the rotating ring block 341 is greatly reduced when the distribution pipe 33 rotates, thereby improving the rotation effect of the distribution pipe 33. It should be noted that although the rotating ring block 341 is engaged in the slot 343, there is still a gap between the rotating ring block 341 and the inner wall of the slot 343. The rotating ring block 341 only contacts the connecting ball 345 to ensure the normal rotation of the rotating ring block 341.

[0058] like Figure 4 and Figure 5As shown, the filter press ejection assembly 5 includes a blade shaft 52 that rotates through the distribution shell 35 and is located in the centrifugal sleeve 45, a spiral blade 51 is provided on the blade shaft 52 and rotates in the centrifugal sleeve 45, a limiting frame 53 is provided on the centrifugal sleeve 45 for limiting the rotation of the blade shaft 52, a connecting gear 54 is provided at one end of the blade shaft 52, and a connecting gear ring 55 is provided on the mounting pipe 32 for engaging with the connecting gear 54.

[0059] Since the connecting gear ring 55 is mounted on the mounting pipe 32, and since the connecting gear ring 55 is fixed in position and posture by the connecting limiter of the mounting pipe 32, when the driving member 41 controls the rotation of the centrifugal shaft 42, the centrifugal shaft 42 engaged by the connecting gear ring 55 and the connecting gear 54 is rotated while driving the blade shaft 52 to rotate, thereby allowing the interconnected centrifugal drive assembly 4 and the filter press ejection assembly 5 to be driven synchronously, that is, it controls the two sets of centrifugal mounting seats to drive the centrifugal sleeve to rotate for dehydration, and drives the spiral blade 51 to rotate inside the centrifugal sleeve, and cooperates with gravity to complete the ejection of the sludge cake after sludge dehydration.

[0060] At this time, the spiral pitch of the spiral blades 51 gradually narrows along the direction of the centrifugal mounting seat 1 43 toward the centrifugal mounting seat 2 44. Therefore, during the centrifugal dehydration of the sludge, the spiral blades 51 can cooperate with gravity to provide the sludge with a thrust for sludge discharge, and at the same time, can use the gradually narrowing pitch to squeeze the centrifugally dehydrated sludge to a certain extent and cooperate with the water filter holes 46 of the centrifugal sleeve to complete the sludge filtration treatment, thereby achieving a filtration effect during sludge transportation, so as to reduce the water content of the sludge after the centrifugal dehydration operation, ensure the dehydration efficiency of the sludge, and improve the overall dehydration effect of the sludge.

[0061] Furthermore, in one embodiment, Figure 8 As shown, the feeding assembly 3 further includes a rotation limiting member 36 provided on the material distribution housing 35 for the blade shaft 52 to rotate on the material distribution housing 35 .

[0062] Specifically, the rotation limiter 36 can limit the blade shaft 52 from rotating through the material distribution shell 35 and enter the centrifugal sleeve to drive the threaded blades to rotate, thereby ensuring the normal operation of the entire device. Therefore, the rotation limiter 36 here can be set as a ball bearing to improve the rotation effect of the blade shaft 52, or a limit sleeve with a waterproof strip on the outside can be used to improve the airtight and waterproof performance of the centrifugal limit shell 2 of the device to avoid water leakage from the limit sleeve during the centrifugal process.

[0063] Furthermore, in one embodiment, Figure 3 As shown, the filter press ejection assembly 5 further includes a separator 56 disposed on the centrifugal mounting seat 43 for separating the overall positions of the plurality of connecting gears 54 during rotation.

[0064] Specifically, the partition 56 is mainly used to separate and ensure the normal rotation of different connecting gears 54. Therefore, the partition 56 can only use a partition plate as shown in the accompanying drawings, or it can be set as a shell structure to limit the rotation position of the connecting gear 54, thereby improving the stability of the rotation of the connecting gear 54 and ensuring the overall strength of the device during operation.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0066] In addition, it should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0067] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or schemes in which A and B are satisfied at the same time. In addition, in the embodiments of the present invention, "multiple" refers to more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A riverbed sludge dewatering device, characterized in that: include: A mounting frame (1) is provided on the mounting frame (1), wherein a water collecting trough (11) for collecting water flow after sludge dehydration and a mud collecting trough (12) for collecting mud cake after sludge dehydration are provided; A centrifugal limiting housing (2) is obliquely arranged on the mounting frame (1), and a drainage pipe (21) is provided at the bottom of the centrifugal limiting housing (2) for discharging water after sludge dehydration; A centrifugal drive assembly (4) is provided on the centrifugal limit housing (2) and is used for centrifugal dewatering of riverbed silt; A feed assembly (3) is arranged on the mounting frame (1) and is used to feed sludge to the centrifugal drive assembly (4); A filter press pushing assembly (5) is provided on the centrifugal drive assembly (4) and is connected to the feed assembly (3), and is used for performing filter press treatment on the mud cake after centrifugal dehydration and pushing the filtered mud cake into the mud collecting tank (12) while the centrifugal drive assembly (4) is in operation; The centrifugal drive assembly (4) includes a centrifugal mounting seat 1 (43) and a centrifugal mounting seat 2 (44) rotating at both ends of the centrifugal limiting housing (2), a plurality of centrifugal sleeves (45) fixedly penetrated through the centrifugal mounting seat 1 (43) and the centrifugal mounting seat 2 (44) and arranged in parallel, a plurality of water filter holes (46) arranged on the centrifugal sleeves (45), a centrifugal rotating shaft (42) fixedly penetrated through the middle of the centrifugal mounting seat 1 (43) and the centrifugal mounting seat 2 (44), and a driving member (41) arranged at one end of the centrifugal rotating shaft (42) for driving the centrifugal rotating shaft (42) to rotate; The feed assembly (3) comprises a distribution pipe (33) provided on a centrifugal mounting seat (43) and located outside the centrifugal shaft (42), and a plurality of distribution shells (35) provided on the distribution pipe (33) and connected to the inside of the centrifugal sleeve (45) in a one-to-one correspondence. The filter press ejection assembly (5) comprises a blade shaft (52) that rotates through a material distribution housing (35) and is located in a centrifugal sleeve (45), a spiral blade (51) that is arranged on the blade shaft (52) and rotates in the centrifugal sleeve (45), a limiting frame (53) that is arranged on the centrifugal sleeve (45) and is used to limit the rotation of the blade shaft (52), a connecting gear (54) that is arranged at one end of the blade shaft (52), and a connecting gear ring (55) that is arranged on the mounting pipe (32) and is used to engage with the connecting gear (54).

2. The riverbed sludge dewatering device according to claim 1, characterized in that: The centrifugal drive assembly (4) further comprises a limiting ring block (47) provided on the centrifugal mounting seat 1 (43) and the centrifugal mounting seat 2 (44) for limiting the rotation of the centrifugal mounting seat 1 (43) and the centrifugal mounting seat 2 (44) on the centrifugal limiting housing (2).

3. The riverbed sludge dewatering device according to claim 1, characterized in that: The feeding assembly (3) comprises a mounting pipe (32) arranged on the mounting frame (1) and sleeved on the outside of the centrifugal shaft (42) for communicating with the distribution pipe (33), and a feeding funnel (31) arranged on the mounting pipe (32) for feeding sludge. The mounting pipe (32) and the distribution pipe (33) are connected via a limiting assembly (34), and the driving member (41) is mounted on the mounting pipe (32).

4. The riverbed sludge dewatering device according to claim 3, characterized in that: The limiting assembly (34) comprises a rotating ring block (341) arranged on the outside of one end of the installation pipe (32), a plurality of clamping blocks (342) arranged at one end of the material distribution pipe (33), a clamping groove (343) arranged on the clamping block (342) for clamping the rotating ring block (341) for limiting rotation, a ball groove (344) arranged in the clamping groove (343), and a connecting ball (345) located in the ball groove (344) for rolling on the rotating ring block (341).

5. The riverbed sludge dewatering device according to claim 1, characterized in that: The spiral pitch of the spiral blades (51) gradually narrows from the centrifugal mounting seat 1 (43) to the centrifugal mounting seat 2 (44).

6. The riverbed sludge dewatering device according to claim 1, characterized in that: The feeding assembly (3) further comprises a rotation limiter (36) provided on the material distribution housing (35) and used for the blade shaft (52) to rotate on the material distribution housing (35).

7. The riverbed sludge dewatering device according to claim 1, characterized in that: The filter pressing and ejecting assembly (5) further comprises a separator (56) arranged on the centrifugal mounting seat (43) for separating the overall positions of the plurality of connecting gears (54) during rotation.

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