CN110847275B - Continuous anti-blocking separation device and method for sludge and garbage dredged by medium and small river channels - Google Patents

Abstract

A continuous anti-blocking separating device for mud and garbage in a medium and small river dredging sludge is characterized in that mud entering a box body (1) through a mud inlet (3), a part of the mud flows out from mud holes (42) of a conveyor belt device (4), main flow flows out from a mud outlet (12) through a 90-degree arc-shaped sieve plate (9) from a right side turn, a vortex is formed below a rotary gate (6), a low flow velocity area is formed on the right upper side in the box body (1), namely on the inner side of a garbage cleaning opening (11), the flow velocity of the mud inlet (3) is controlled to be 1.0-2.5m/s, a vortex area is formed on the upper area of the 90-degree arc-shaped sieve plate (9), the flow velocity of the vortex area is 0.1-0.6m/s, and a closed space is formed on the right side of the box body (1) through the rotary gate (6), so that uninterrupted dredging operation is realized. The garbage in the sludge is concentrated to one side by utilizing water flow power, and the garbage in the sludge can be smoothly separated out by constructing a closed space through the rotary gate, so that uninterrupted dredging operation is realized, the problem of blocking of sieve holes on the surface of the conveying belt is effectively prevented, the problem of easy blocking of a pump opening in the dredging process of a medium and small river is effectively solved, and the dredging efficiency is remarkably improved.

Description

Continuous anti-blocking separation device and method for sludge and garbage dredged by medium and small river channels

Technical Field

The invention relates to underwater dredging mechanical equipment, belongs to the technical field of excavation or dredging of IPC classification E02F5/00 water conservancy dredging engineering, and particularly relates to a continuous anti-blocking separation device and method for sludge and garbage in small and medium-sized river dredging.

Background

At present, as the river channel is polluted by the discharge of industrial sewage, the condition that industrial waste and household garbage are discarded in the river channel occurs, and the sludge treatment naturally becomes a great difficulty in dredging the river channel in the middle and small areas. The dredging engineering of middle and small river channels in cities and rural river channels is affected by urban traffic, bridge and culvert, two-bank buildings, mud stacking fields, flood prevention, water quality, environmental protection and the like, and is usually manually hydraulically dredged to drain and dredge, the dredging mode is single, the efficiency is low, and a pump opening is extremely easy to block.

The related improved technology is found to be less in published patent documents.

The patent application CN200720042797.7 of Nantong dredging machine Co-Ltd relates to an underwater dredging machine. The device comprises a floating body, a slurry pump arranged on the floating body, a suction head connected with the slurry pump by a suction pipe, a slurry conveying pipe connected with the slurry pump, a high-pressure water pump, a water pipe for the outlet of the high-pressure water pump, a high-pressure water spray nozzle arranged on the outer side of the suction head, a sealing pipe fixedly connected with the floating body by a flange and connected by a bolt, a deck which is easy to detach and assemble, an anchor chain electric winch arranged on four corners of the deck, a portal frame for lifting the suction head and the suction pipe and an electric winch arranged on the deck.

The patent application CN201610743553.5 of the Wenzhou Yuanjie environmental protection science and technology limited company discloses a river mud cleaning equipment, and is characterized in that the river mud cleaning equipment comprises a floating body which is suspended on the water surface and a mud cleaning device which is arranged on the floating body, wherein the mud cleaning device comprises a transmission chain which circularly rotates in a ring mode and a plurality of mud digging hoppers which are arranged on the transmission chain, the transmission chain is arranged on a support, one part of the support is deeply immersed in water, the other part of the support is exposed out of water, and a positioning part which is used for preventing the dredged mud from being excessively deep is arranged on the support which is deeply immersed in water, and a profiling conveying ship. The dredger is used for dredging through the circulating dredging bucket, and dredged silt can be transported out through the silt conveying ship.

The invention provides a device for efficiently cleaning silt of a dredger and a channel dredging system, which are provided by China patent application 201820471167.X provided by the Yangtze river Nanjing channel engineering bureau, and relate to the technical field of hydraulic engineering, and the device comprises a tide monitoring device, an input device, a processor and a trailing suction hopper dredger; the power flow monitoring device is in signal connection with the processor and is used for monitoring power flow data in real time and sending the power flow data to the processor; the input device is in signal connection with the processor and is used for sending soil data to the processor; the processor is used for receiving the tide data and the soil property data, determining a construction area according to the tide data and the soil property data, generating a control command, and sending the control command to the trailing suction hopper dredger so as to guide the trailing suction hopper dredger to work; the trailing suction hopper dredger is in signal connection with the processor and is used for cleaning the sludge in the channel.

The utility model provides a china patent application CN201820738579.5 that south jingxin's world raised environmental protection science and technology limited company proposed discloses a modularization environmental protection dredging ship, including the boats and ships main part, the last fixed surface of boats and ships main part is connected with controller and fixed plate, and the fixed plate is located the left side of controller, through being equipped with the locating plate in the inside of spout, the locating plate of being convenient for drives the spud and carries out upper and lower position control, through the inside fixedly connected with electric putter at the mount, electric putter of being convenient for drives the push post and reciprocates, lower extreme fixedly connected with at the spud inserts the awl, be convenient for better insert the spud in earth, be equipped with the locating awl in the cavity of opening all around of inserting the awl, the tip fixedly connected with extrusion dish of locating awl, and cup jointed the spring housing on the locating awl, be convenient for promote the extrusion dish and drive the locating awl to insert the outside motion of awl through the push post, can peg graft the locating awl in earth, be convenient for better fix the spud in earth, make the boats and ships main part stability higher.

As mentioned above, conventional dredging methods have failed to meet the demand. The existing dredging equipment is large in size and cannot meet the traffic navigation requirements of the middle and small river channels, so that the invention is highly required to be invented into the garbage separation device in the middle and small river channels.

Disclosure of Invention

The invention aims to provide a continuous anti-blocking separation device and method for dredging sludge garbage in a medium and small river, which are used for completely separating the sludge in the river from the garbage in the sludge, overcoming the technical defects, meeting the dredging requirements of the medium and small river and effectively solving the problems that the garbage in the sludge in the medium and small river is very difficult to treat and the pump opening is easy to block.

In order to achieve the technical purpose, the invention adopts the following technical scheme: the invention comprises the following steps: the garbage collection device comprises a box body, a frame, a mud inlet, a conveyor belt device, a rotary gate, a 90-degree arc-shaped sieve plate, a garbage cleaning port and a mud outlet; the box body is fixed on the frame, a mud inlet is formed in the front end wall of the box body, a conveyor belt device is horizontally arranged in the box body at the inner side of the mud inlet, a 90-degree arc-shaped sieve plate is connected and arranged at the lower side of the tail part of the conveyor belt device, a rotary gate is arranged at the rear side of the tail part of the conveyor belt device, a center shaft of the rotary gate is horizontally arranged, a garbage cleaning opening is formed in the rear end wall of the box body, and a mud outlet is formed in the lower side of the conveyor belt device in the box body; the mud entering the box body from the mud inlet, part of the mud flows out from a mud hole of the conveyor belt device, the main flow turns from the right side and flows out from the mud outlet through a 90-degree arc-shaped sieve plate, a vortex is formed below the rotary gate, hard garbage is accumulated at the position, the flow velocity at the right upper part in the box body is small, the fluid direction from the mud inlet to the garbage cleaning port and the mud outlet is the suspended garbage accumulation position, the main flow direction of the mud meets the mud overflow requirement, and a vortex area formed between the 90-degree arc-shaped sieve plate and the rotary gate is arranged at the lower side of the conveyor belt device, so that the mud is promoted to be continuously output; meanwhile, a low flow velocity area is formed at the right upper side in the box body, namely the inner side of the garbage cleaning opening, a vortex area is formed at the upper area of the 90-degree arc-shaped sieve plate by utilizing the principle of water flow dynamics under the condition that the flow velocity of the mud inlet is controlled to be 1.0-2.5m/s, the flow velocity of the vortex area is 0.1-0.6m/s, hard garbage in sludge is continuously accumulated in the vortex area, floating garbage is concentrated in the low flow velocity area at the right upper corner of the box body, and a closed space is constructed at the right side of the box body through a rotary gate, so that uninterrupted dredging operation is realized.

In particular, the conveyor belt assembly comprises a conveyor belt, a mud hole, a rotating shaft and a protruding block; the conveyer belt winds between two pivots of both ends parallel arrangement, and the conveyer belt surface is established the mud hole, pivot surface establish the lug, pivot surface lug size and conveyer belt mud hole size assorted, mud hole interval equals the circular arc section length between the adjacent lug of pivot surface.

In particular, the conveyor belt assembly is driven by a motor to rotate in a clockwise direction.

In particular, an upper baffle plate and a lower baffle plate are respectively and horizontally fixed on the inner walls of the box body at the top and the bottom of the rotary gate; meanwhile, the rotary gate comprises an upper gate, a lower gate and a rotating shaft; the rotary shaft is horizontally hinged in the box body, the outer wall of the rotary shaft is symmetrically and fixedly connected with an upper gate and a lower gate, the upper gate and the lower gate are coplanar, and the plane penetrates through the central shaft of the rotary shaft; when the upper gate and the lower gate are in the vertical state, the edges of the upper gate and the lower gate are respectively stuck to the upper baffle and the lower baffle.

In particular, the radius of the 90 ° arc screen plate is the same as the rotary gate.

In particular, the edge positions of the upper baffle plate and the lower baffle plate are provided with sealing rubber rings, and the inner side of the garbage cleaning opening is provided with a sealing ring.

In particular, the bottom of the conveyor belt device is fixedly provided with a supporting rod; the supporting rods are positioned at two sides of the 90-degree arc-shaped sieve plate.

In particular, the mud outlet is connected with a mud pump pipeline through a flange.

In particular, the surface of the 90-degree arc-shaped sieve plate is provided with sieve holes, and the aperture is 20mm.

In particular, the mud outlet of the box body is externally connected with mud, so that the vacuum negative pressure state in the box body is ensured in the operation process.

The invention has the positive effects that: the garbage in the sludge can be smoothly separated, the problem of blockage of sieve holes on the surface of the conveyor belt is effectively prevented, the problem that the pump opening of the slurry pump is easy to block is solved, the labor force is saved, the whole equipment is simple in structure and convenient to operate, the problem that the pump opening is easy to block in the dredging process of a medium and small river is effectively solved, and the dredging efficiency is remarkably improved.

Drawings

FIG. 1 is a schematic diagram of the fluid dynamics in a tank according to an embodiment of the present invention.

Fig. 2 is a schematic front view of a garbage separating device according to an embodiment of the present invention.

Fig. 3 is a schematic perspective view of an axial perspective structure of a garbage separating device according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of a conveyor belt device according to an embodiment of the present invention.

Fig. 5 is a schematic vertical sectional view of a rotary shutter according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of a 90 ° arc-shaped screen plate according to an embodiment of the present invention.

The reference numerals include:

1-box body, 2-frame, 3-mud inlet, 4-conveyer device, 41-conveyer, 42-mud hole, 43-rotating shaft, 44-bump, 5-motor, 6-rotary gate, 61-upper gate, 62-lower gate, 63-rotating shaft, 7-upper baffle, 8-lower baffle, 9-90 degree arc sieve plate, 91-sieve mesh, 10-support bar, 11-garbage cleaning port and 12-mud outlet.

Detailed Description

Aiming at the problem of complex garbage in middle and small river channels, the principle of the invention is that the garbage in the sludge is concentrated to one side close to an outlet in the box body 1 by utilizing water flow power, and a rotary opening or closed space is constructed by a rotary gate 6, so that uninterrupted dredging operation is realized. The specific principle comprises: through set up with conveyer belt device 4 on conveyer belt pivot 43 surface on conveyer belt device 4 sieve mesh 91 assorted lug 44, in case the circumstances of debris jam sieve mesh appears, the inside plug of conveyer belt sieve mesh is ejecting in the preliminary screening process, can effectively prevent stifled. Under the condition that the flow rate of the mud inlet 3 is controlled to be 1.0-2.5m/s, a vortex area is formed in the upper area of the 90-degree arc-shaped sieve plate 9 by utilizing the principle of water flow dynamics, the flow rate of the vortex area is 0.1-0.6m/s, hard garbage in sludge is continuously piled up in the vortex area, floating garbage is concentrated in a low flow rate area at the right upper corner of the box body, and a closed space is constructed at the right side of the box body 1 through the rotary gate 6, so that the dredging operation is convenient to clean in time, and uninterrupted dredging operation is realized.

In the invention, a part of the slurry entering the box body 1 from the slurry inlet 3 flows out from the slurry hole 42 of the conveyor belt device 4, the main flow turns from the right side and flows out from the slurry outlet 12 through the 90-degree arc-shaped sieve plate 9, a vortex is formed below the rotary gate 6, hard garbage is accumulated at the vortex, as shown in the attached figure 1, the flow velocity at the upper right part in the box body 1 is small, the flow direction from the slurry inlet 3 to the garbage cleaning port 11 and the slurry outlet 12 is the suspension garbage accumulation position, the main flow direction of the slurry meets the slurry overflow requirement, and a vortex area formed at the lower side of the conveyor belt device 4 and between the 90-degree arc-shaped sieve plate 9 and the rotary gate 6 is used for promoting continuous output of the slurry; meanwhile, a low flow velocity area is formed on the right upper side in the box body 1, namely the inner side of the garbage cleaning opening 11, so that garbage collection and cleaning are facilitated.

The invention is especially suitable for dredging small and medium river channels in cities and rural areas.

The invention comprises the following steps: the garbage collection device comprises a box body 1, a frame 2, a mud inlet 3, a conveyor belt device 4, a rotary gate 6, a 90-degree arc-shaped sieve plate 9, a garbage collection port 11 and a mud outlet 12.

Further description will be given below by way of examples and accompanying drawings.

Examples: as shown in fig. 2 and 3, the box 1 is fixed on the frame 2, the front end wall of the box 1 is provided with a mud inlet 3, a conveyor belt device 4 is horizontally arranged inside the mud inlet 3 in the box 1, a 90-degree arc-shaped sieve plate 9 is connected and arranged below the tail part of the conveyor belt device 4, a rotary gate 6 is arranged at the rear side of the tail part of the conveyor belt device 4, a middle shaft of the rotary gate 6 is horizontally arranged, a garbage cleaning opening 11 is arranged on the rear end wall of the box 1, and a mud outlet 12 is arranged below the conveyor belt device 4 in the box 1.

In the foregoing, the suction force of the whole equipment is provided by a mud pump externally connected with the mud outlet 12. The box body 1 is sealed well, the vacuum negative pressure state is kept in the box body 1 in the operation process, and the size of the box body 1 can be adjusted according to the flow of the matched slurry pump.

In the foregoing, the frame 2 is a skeleton structure of the entire case 1, and plays a role in supporting the case 1.

In the foregoing, the mud inlet 3 is in butt joint with the mud pipe through a flange, the diameter of the mud inlet 3 is 200mm, and the garbage exceeding the size range cannot enter the box body 1.

In the foregoing, as shown in fig. 4, the conveyor belt device 4 includes a conveyor belt 41, a mud hole 42, a rotation shaft 43, and a projection 44; the conveyer belt 41 winds between two pivot 43 of both ends parallel arrangement, and the conveyer belt 41 surface is established the mud hole 42, pivot 43 surface establish lug 44, pivot 43 surface lug 44 size and conveyer belt mud hole 42 size assorted, the circular arc section length between the adjacent lug 44 in mud hole 42 interval equals pivot 43 surface, the plug jack-up of card income mud hole 42 inside in the preliminary screening process can be effectively prevented to this lug 44.

In the foregoing, the motor 5 is mounted on the case 1, and the motor 5 is in transmission connection with the conveyor belt device 4. The conveyor belt device 4 is driven by a motor 5 to rotate clockwise, and the garbage is collected to the right side of the box body 1 under the combined action of water flow.

In the foregoing, the upper baffle 7 and the lower baffle 8 are horizontally fixed to the inner walls of the case 1 at the top and bottom of the rotary shutter 6, respectively. Meanwhile, as shown in fig. 5, the rotary shutter 6 includes an upper shutter 61, a lower shutter 62, and a rotation shaft 63; the rotating shaft 63 is horizontally hinged in the box body 1, the outer wall of the rotating shaft 63 is symmetrically and fixedly connected with the upper gate 61 and the lower gate 62, the upper gate 61 and the lower gate 62 are coplanar, and the plane penetrates through the center shaft of the rotating shaft 63. When the upper and lower shutters 61, 62 are in the upright vertical state, the edges of the upper and lower shutters 61, 62 are respectively abutted against the upper and lower shutters 7, 8. The outer end of the rotating shaft 63 is in transmission connection with the box body 1 and is connected with a hand lever, the rotary gate 6 is operated by the manual hand lever and is in a horizontal state in the normal operation process, the outer side of the box body 1 is blocked by a buckle, after the right side of the box body 1 is fully piled up with garbage, the rotary gate 6 is rotated anticlockwise by removing the buckle to be in a vertical state, and the lower gate 62 pushes all garbage on the upper part of the 90-degree arc-shaped sieve plate 9 to the right closed space of the box body; at this time, the whole equipment can still continue to operate, and garbage is concentrated at the upper part of the 90-degree arc-shaped sieve plate 9; after the garbage is cleaned, the gate is rotated clockwise to be in a horizontal state, and meanwhile, garbage concentrated on the upper surface of the 90-degree arc-shaped sieve plate 9 is pushed to the upper part of the box body 1, and the garbage is concentrated to the right side of the box body under the action of water flow. The portion of the rotation shaft 63 which is beyond the case 1 is provided with a handle and a buckle, and the opening and closing of the rotary gate 6 are manually operated, thereby simplifying the apparatus.

In the foregoing, as shown in fig. 6, the 90 ° arc-shaped screen plate 9 has the same radius as the rotary shutter 6. The surface of the 90-degree arc-shaped sieve plate 9 is provided with sieve holes 91, and the diameter of the sieve holes is 20mm.

In the foregoing, after the rotary shutter 6 rotates to the vertical state, the edge positions of the upper shutter 61 and the lower shutter 62 are respectively closely attached to the upper shutter 7 and the lower shutter 8, so as to ensure the tightness of the edge positions of the rotary shutter 6.

In the foregoing, sealing rubber rings are arranged at the edge positions of the upper baffle 7 and the lower baffle 8.

In the foregoing, the bottom of the conveyor belt device 4 is fixedly provided with the supporting rod 10; in particular, the supporting rods 10 are located on both sides of the 90 ° arc-shaped screen plate 9 and serve as a support for the conveyor belt assembly 4.

In the foregoing, the inner side of the garbage cleaning opening 11 is provided with a sealing ring, so as to ensure the tightness of the whole box body 1.

In the foregoing, the mud outlet 12 is connected to the mud pump line via a flange.

In this embodiment, mud and river bottom rubbish enter the box 1 from the mud inlet 3, after the primary screening of conveyer belt device 4, the mud is turned over from the right side and is subsided to get into box 1 bottom, and rubbish is detained on the right side, and residual mud is taken out through mud outlet 12 after gathering through 90 arc sieve 9, to detaining rubbish then close rotatory gate 6 after manual clearance can.

In this embodiment, the case 1 is made of steel plate, and the thickness is above 6mm, so that the case 1 is ensured to have a certain negative pressure resistance. The mud hole 42 has a diameter of 20mm.

In this embodiment, the size of the box 1 can be determined according to the flow of the slurry pump actually used in the engineering construction process, so that the box is flexible and mobile, and the requirements of different river channels can be met.

The specific implementation steps are as follows.

During dredging, the mud inlet 3 is externally connected with a mud pipe orifice to be submerged or semi-submerged in mud, a mud pump externally connected with the mud outlet 12 operates, mud and river channel garbage are sucked into the box body 1 from the mud inlet 3, the conveyer belt device 4 always keeps clockwise rotation through the conveyer belt device 4, and part of mud enters the bottom of the box body 1 from a mud hole 42 on the surface of the conveyer belt 41. The rest mud and river bottom garbage enter the bottom of the right side of the box body 1 through the rotary gate 6 under the action of the water flow and the conveyor belt 41, the mud is pumped out from the mud outlet 12 after passing through the 90-degree arc-shaped sieve plate 9 under the action of mud pumping force, and the river bottom garbage stays on the right side of the 90-degree arc-shaped sieve plate 9. After the right side of the box body 1 is fully piled up, the rotary gate 6 is manually rotated and closed by a hand rocking bar in a anticlockwise manner outside the box body 1, and garbage on the upper portion of the 90-degree arc-shaped sieve plate 9 is pushed to the right space of the box body 1 in the rotating process. After the rotary gate 6 is closed, the right space of the box body 1 is in a fully-closed state, and the left side can still continue to run, so that garbage is concentrated in the upper space of the 90-degree arc-shaped sieve plate 9. After the garbage cleaning opening 11 is opened, the rotary gate 6 is rotated clockwise to be horizontal after the garbage in the right space is cleaned, and meanwhile, the garbage in the space above the 90-degree arc-shaped screen plate 9 is pushed to the upper part and is concentrated to the right side of the box body again under the action of water flow.

The above embodiments are intended to assist the reader in understanding the invention, and are not intended to limit the invention in any way, and any modifications or equivalent changes and modifications that do not depart from the spirit of the invention are possible to be included in the scope of the invention.

Claims (10)

1. The continuous anti-blocking separation device for the sludge and garbage in the dredging of the medium and small river channels comprises a box body (1), a frame (2), a sludge inlet (3), a conveyor belt device (4), a rotary gate (6), a 90-degree arc-shaped sieve plate (9), a garbage cleaning port (11) and a sludge outlet (12); the garbage collection device is characterized in that a box body (1) is fixed on a frame (2), a mud inlet (3) is formed in the front end wall of the box body (1), a conveyor belt device (4) is horizontally arranged on the inner side of the mud inlet (3) in the box body (1), a 90-degree arc-shaped sieve plate (9) is connected and arranged on the lower side of the tail part of the conveyor belt device (4), a rotary gate (6) is arranged on the rear side of the tail part of the conveyor belt device (4), a middle shaft of the rotary gate (6) is horizontally arranged, a garbage collection opening (11) is formed in the rear end wall of the box body (1), and a mud outlet (12) is formed in the lower side of the conveyor belt device (4) in the box body (1); the mud entering the box body (1) from the mud inlet (3) partially flows out from a mud hole (42) of the conveyor belt device (4), main flow flows out from the mud outlet (12) from a right turn through a 90-degree arc-shaped sieve plate (9), vortex is formed below the rotary gate (6), hard garbage is accumulated at the vortex, the flow velocity at the right upper part in the box body (1) is small, the flow direction from the mud inlet (3) to the garbage cleaning opening (11) and the mud outlet (12) is a suspended garbage accumulation position, the main flow direction of the mud meets the mud overflow requirement, and a vortex area formed between the lower side of the conveyor belt device (4) and the 90-degree arc-shaped sieve plate (9) and the rotary gate (6) promotes continuous output of the mud; meanwhile, a low flow velocity area is formed on the right upper side in the box body (1), namely the inner side of the garbage cleaning opening (11), a vortex area is formed on the upper area of the 90-degree arc-shaped sieve plate (9) under the condition that the flow velocity of the mud inlet (3) is controlled to be 1.0-2.5m/s, the flow velocity of the vortex area is 0.1-0.6m/s, hard garbage in sludge is continuously accumulated in the vortex area, floating garbage is concentrated in the low flow velocity area on the right upper corner of the box body, and a closed space is constructed on the right side of the box body (1) through the rotary gate (6), so that uninterrupted dredging operation is realized.

2. Continuous anti-blocking separation device for dredging sludge garbage in medium and small river channels according to claim 1, characterized in that the conveyor belt device (4) comprises a conveyor belt (41), a sludge hole (42), a rotating shaft (43) and a bump (44); the conveyer belt (41) is coiled between two pivot (43) of both ends parallel arrangement, and mud hole (42) are established on conveyer belt (41) surface, pivot (43) surface establish lug (44), pivot (43) surface lug (44) size and conveyer belt mud hole (42) size assorted, mud hole (42) interval equals the circular arc section length between adjacent lug (44) in pivot (43) surface.

3. Continuous anti-blocking separation device for dredging sludge garbage in medium and small river channels according to claim 1, characterized in that the conveyor belt device (4) is driven by a motor (5) to rotate clockwise.

4. The continuous anti-blocking separation device for the sludge garbage of the small and medium-sized river dredging according to claim 1, wherein an upper baffle (7) and a lower baffle (8) are respectively horizontally fixed on the inner walls of the box body (1) at the top and the bottom of the rotary gate (6); meanwhile, the rotary gate (6) comprises an upper gate (61), a lower gate (62) and a rotating shaft (63); the rotating shaft (63) is horizontally hinged in the box body (1), the outer wall of the rotating shaft (63) is symmetrically and fixedly connected with the upper gate (61) and the lower gate (62), the upper gate (61) and the lower gate (62) are coplanar, and the plane penetrates through the center shaft of the rotating shaft (63); when the upper gate (61) and the lower gate (62) are in the vertical state, the edges of the upper gate (61) and the lower gate (62) are respectively clung to the upper baffle (7) and the lower baffle (8).

5. The continuous anti-blocking separation device for the sludge and garbage of the dredging of the medium and small river channels according to claim 1, wherein the radius of the 90-degree arc-shaped sieve plate (9) is the same as that of the rotary gate (6).

6. The continuous anti-blocking separation device for the sludge and garbage dredging in the medium and small-sized river channels according to claim 1, wherein sealing rubber rings are arranged at the edge positions of the upper baffle plate (7) and the lower baffle plate (8), and sealing rings are arranged at the inner side of the garbage cleaning opening (11).

7. The continuous anti-blocking separation device for the dredging sludge garbage of the medium and small river channels according to claim 1, wherein a supporting rod (10) is fixedly arranged at the bottom of the conveyor belt device (4); the supporting rods (10) are positioned at two sides of the 90-degree arc-shaped sieve plate (9).

8. Continuous anti-blocking separation device for dredging sludge garbage in small and medium-sized river channels according to claim 1, wherein the sludge outlet (12) is connected with a sludge pump pipeline through a flange.

9. The continuous anti-blocking separation device for the sludge garbage of the dredging of the medium and small river channels according to claim 1, wherein the surface of the 90-degree arc-shaped sieve plate (9) is provided with sieve holes (91), and the aperture is 20mm.

10. The continuous anti-blocking separation device for the sludge garbage of the medium and small river dredging according to claim 1, wherein the sludge outlet (12) of the box body (1) is externally connected with sludge, so that the vacuum negative pressure state in the box body (1) is kept in the operation process.

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