River sludge removing device

Abstract

The invention discloses a riverway sludge removing device, which relates to the technical field of sludge removing, and comprises a sewage pump, a sewage inlet pipe, a transmission shaft fixedly mounted at the power output end of the sewage pump, and a plurality of blocking rings rotationally connected to the outer wall of the transmission shaft in a sleeving manner, and one end of the sewage inlet pipe is detachably connected with the water inlet end of the sewage pump; the diameters of the blocking rings are sequentially increased from the central axis of the transmission shaft to the direction close to the inner wall of the sewage inlet pipe. When sludge at the bottom of a riverway needs to be pumped, the sludge pump is started, the sludge at the bottom of the riverway can penetrate through the two adjacent blocking rings to enter the inner cavity of the sludge inlet pipe, and waste, broken stones and iron products which are larger than the distance between the two adjacent blocking rings and are difficult to degrade are blocked by the blocking rings and cannot enter the inner cavity of the sludge inlet pipe, so that the sludge at the bottom of the riverway can be pumped. Sludge around the sludge inlet pipe can be rapidly pumped to a sludge collecting position, the sludge pump can normally operate and normally pump the sludge, and the influence of the sludge pump on normal sludge discharge of the bottom of a river channel is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sludge removal, in particular to a river channel sludge removal device. Background Art

[0002] Rivers are carriers of water resources. The migration and deposition of soil caused by the impact of flowing water is a major cause of the current river siltation. Many rivers were built at a relatively early age and lack scientific planning and construction, resulting in the lack of bank protection in the completed rivers. This has greatly affected the river's ability to resist the impact of flowing water. The soil components of the river are exposed, and under the alternating effects of hydraulic power, sun drying and manpower, serious soil and water erosion has occurred. Part of the lost soil is deposited at the bottom of the river, causing the riverbed to rise after a long period of action, which in turn affects the river's ability to transport water resources.

[0003] In order to ensure the transportation capacity of the river, reduce the rise of the riverbed or direct blockage of the river, regular dredging activities are carried out on the river. Dredging activities are generally mechanical dredging, supplemented by manual salvage. For some rivers that cannot be blocked, excavators are generally used on the river to dig out the silt in the river shovel by shovel, or dredging ships are used to travel on the river, and then the silt suction pipes are deep into the silt, and the silt is sucked onto the dredging ship for dredging with a suction pump.

[0004] Currently, when using a suction pump to suck out sludge at the bottom of a river channel, the suction pump needs to be sunk to the bottom of the river channel until the suction end of the suction pump is buried in the sludge under the action of gravity. Then the suction pump is started to extract the sludge at the bottom of the river channel. However, due to the limited size of the suction end of the suction pump, debris (such as stones, garbage and metal parts) in the sludge at the bottom of the river channel may cause blockage to the extraction end of the water pump, thereby affecting the normal discharge of sludge at the bottom of the river channel by the suction pump and the normal operation of the suction pump. Summary of the invention

[0005] The object of the present invention is to provide a river channel silt removing device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a river silt removal device, comprising:

[0007] Sewage pump;

[0008] A sewage inlet pipe, one end of which is detachably connected to the water inlet end of the sewage pump, and a transmission shaft is fixedly installed on the power output end of the sewage pump;

[0009] The barrier part is fixedly connected to one end of the rotating shaft located outside the sewage pump. The rotating shaft is used to rotate with the barrier part. When the sewage pump extracts sludge, the sludge can pass through the barrier part and be sucked by the sewage pump. The barrier part can block the waste and particulate impurities in the river channel, and at the same time, it can also move the waste and particulate impurities away from the sewage inlet pipe;

[0010] The dredging assembly is arranged on the outer wall of the sewage inlet pipe and can break up the compacted silt at the bottom of the river channel.

[0011] Preferably, the barrier portion comprises:

[0012] A plurality of blocking rings are rotatably connected to the outer wall of the transmission shaft, and the diameters of the plurality of blocking rings are increased in sequence in a direction close to the inner wall of the sewage inlet pipe with the central axis of the transmission shaft as the starting point;

[0013] A shift rod has one end fixedly connected to the outer wall of the transmission shaft, and the shift rod is vertically arranged between the transmission shaft. A plurality of shift blocks are fixedly installed on the outer wall of the shift rod. The plurality of shift blocks are staggered with a plurality of blocking rings, and one end of the plurality of shift blocks away from the shift rod extends between two adjacent blocking rings.

[0014] Preferably, multiple blocking rings are located between the lever and the extraction end of the sewage pump, and the outer wall of the transmission shaft is rotatably sleeved with multiple support plates that support the blocking rings. The outer walls of the multiple support plates are simultaneously fixedly connected to the ends of the multiple blocking rings away from the lever, and the ends of the multiple support plates away from the transmission shaft are fixedly connected to the inner wall of the sewage inlet pipe.

[0015] Preferably, a crushing blade for crushing gravel is fixedly sleeved on the outer wall of the transmission shaft, and the crushing blade is located between the support plate and the extraction end of the sewage pump.

[0016] Preferably, a transmission pipe is detachably mounted on the water outlet end of the sewage pump.

[0017] Preferably, the blocking part is a spiral silt cleaning plate, which is fixedly mounted on the top of the transmission shaft. The spiral silt cleaning plate is arranged as a truncated cone structure, and the small end of the spiral silt cleaning plate extends in a direction away from the sewage inlet pipe.

[0018] Preferably, a resistance reducing block is fixedly mounted on the small end of the spiral silt cleaning plate, the resistance reducing block is arranged as a conical structure, and the large end of the resistance reducing block is fixedly connected to the small end of the spiral silt cleaning plate.

[0019] Preferably, the crushing blade, the shifting block and the spiral silt removal plate are all made of nickel alloy.

[0020] Preferably, the dredging assembly includes a dredging rod, one end of which is rotatably mounted with a sleeve, the outer wall of the sleeve is fixedly connected to the outer wall of the sewage inlet pipe, the outer wall of the dredging rod is fixedly sleeved with a spiral blade along the vertical direction, and the top of the dredging rod is fixedly mounted with a drive motor for its own rotation.

[0021] Preferably, the end of the dredging rod away from the driving motor is inclined toward the bottom of the sewage inlet pipe.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] When it is necessary to extract the sludge at the bottom of the river channel in the present invention, the sewage pump is started, and the sludge at the bottom of the river channel will pass through the barrier part, be sucked up and discharged by the sewage pump, while the flexible waste or hard granular impurities mixed in the sludge will be blocked by the barrier part and moved away from the sewage inlet pipe, and will not be sucked up by the sewage pump, and will not cause clogging of the sewage pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A perspective view of the present invention;

[0025] Figure 2 It is an assembly diagram of the dredging rod and the sewage inlet pipe of the present invention;

[0026] Figure 3 It is an assembly diagram of the lever and the blocking ring of the present invention;

[0027] Figure 4 It is an assembly diagram of the sewage inlet pipe and the crushing blade of the present invention;

[0028] Figure 5 It is an assembly diagram of the spiral desilting plate and the sewage pump of the present invention;

[0029] Figure 6 It is an assembly diagram of the blocking ring and the support plate of the present invention.

[0030] In the figure: 1. Sewage pump; 2. Sewage inlet pipe; 3. Digging rod; 4. Transmission pipe; 5. Push rod; 6. Push block; 7. Block ring; 8. Support plate; 9. Crushing blade; 10. Resistance reduction block; 11. Spiral dredging plate; 12. Transmission shaft. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] See also Figure 1-6 ,include:

[0034] The sewage pump 1 has a water outlet connected to a transmission pipe 4 via a flange. When the sewage pump 1 is used to extract sludge at the bottom of a river channel, the free end of the transmission pipe 4 is placed at a sludge collection area on the shore or on a dredging boat, and the sludge at the bottom of the river channel can be cleaned through the transmission pipe 4.

[0035] The sewage inlet pipe 2, one end of which is detachably connected to the water inlet end of the sewage pump 1 by bolts, and is communicated with the water inlet end of the sewage pump 1. When extracting the sludge at the bottom of the river channel, the sewage pump 1 is first sunk to the bottom of the river channel until the sewage inlet pipe 2 is completely sunk into the sludge at the bottom of the river channel under the action of the sewage pump 1 and its own gravity. The sewage pump 1 is started, and the sludge around the sewage inlet pipe 2 quickly enters the inner cavity of the sewage inlet pipe 2, and is transmitted to the interior of the transmission pipe 4 through the sewage pump 1, and then discharged to the sludge collection point through the transmission pipe 4.

[0036] There may be a large amount of waste (such as plastic bags, plastic films and plastic building materials, etc.) in the sludge at the bottom of the river. When the sewage pump 1 is used to extract the sludge at the bottom of the river, the sludge around the sewage inlet pipe 2 and the waste are sucked into the inner cavity of the sewage inlet pipe 2 by the suction force of the sewage pump 1. The waste can easily block the extraction end of the sewage pump 1, reduce the suction force of the extraction end of the sewage pump 1, and reduce the efficiency of sludge extraction.

[0037] In order to prevent the difficult-to-degrade waste (such as tree roots, aquatic plants, plastic bags or woven bags, etc.) that enters the inner cavity of the sewage inlet pipe 2 from accumulating at the extraction end of the sewage pump 1 and causing the sewage pump 1 to fail to work normally, a transmission shaft 12 is fixedly installed at the power output end of the sewage pump 1. When the power output end of the sewage pump 1 rotates, the transmission shaft 12 rotates accordingly. The outer wall of one end of the transmission shaft 12 located inside the sewage inlet pipe 2 is fixedly sleeved with a crushing blade 9 for difficult-to-degrade waste. When the sewage pump 1 is working, the power output end of the sewage pump 1 rotates accordingly, so that the crushing blade 9 rotates rapidly with the transmission shaft 12 as the rotation center. When the high-speed rotating crushing blade 9 collides with the waste entering the inner cavity of the sewage inlet pipe 2, the waste inside the sewage inlet pipe 2 can be crushed to prevent the waste from clogging the extraction end of the sewage pump 1, so that the sewage pump 1 can be stable and work normally.

[0038] In addition to the flying particles that are difficult to degrade, the sludge also contains hard granular impurities such as gravel, bricks or stones. When the sewage pump 1 is working, if the hard granular impurities are sucked into the interior of the pump body, the impeller of the pump body may be damaged. At the same time, the hard impurities may also collide with the crushing blade 9, causing damage to the crushing blade 9.

[0039] In order to prevent the hard impurities such as broken stones and iron products in the sludge from entering the inner cavity of the sewage inlet pipe 2 and causing blockage at the extraction end of the sewage pump 1, or even causing damage to the sewage pump 1, a plurality of blocking rings 7 are rotatably sleeved on the outer wall of the transmission shaft 12, such as Figure 3 As shown, multiple blocking rings 7 are coaxially arranged, and their diameters increase successively in the direction approaching the inner wall of the sewage inlet pipe 2 with the central axis of the transmission shaft 12 as the starting point. When it is necessary to extract the sludge at the bottom of the river channel, the sewage pump 1 is first sunk to the bottom of the river channel until the extraction end of the sewage inlet pipe 2 is completely covered by the sludge at the bottom of the river channel, and then the sewage pump 1 is started. When the sewage pump 1 extracts the sludge at the bottom of the river channel, the sludge at the bottom of the river channel will pass through two adjacent blocking rings 7 and enter the inner cavity of the sewage inlet pipe 2, while the difficult-to-degrade waste, gravel and iron products whose size is larger than the distance between the two adjacent blocking rings 7 are blocked by the blocking ring 7, so that they cannot enter the inner cavity of the sewage inlet pipe 2, preventing the extraction end of the sewage pump 1 from being blocked by the difficult-to-degrade waste, gravel and iron products, so that the sludge around the sewage inlet pipe 2 can be quickly extracted to the sludge collection point, so that the sewage pump 1 can operate normally and extract the sludge normally, reducing the impact of the sewage pump 1 on the normal sewage discharge of the sludge at the bottom of the river channel.

[0040] When the sewage pump 1 extracts the sludge at the bottom of the river channel, the difficult-to-degrade waste, gravel and iron products mixed in the sludge will be sucked by the extraction end of the sewage pump 1 while extracting the sludge. As a result, the difficult-to-degrade waste, gravel and iron products whose size is larger than the distance between two adjacent blocking rings 7 are attached to one end of the blocking ring 7. When the number is large, one end of the blocking ring 7 is seriously blocked, resulting in the inability to quickly extract the sludge into the inner cavity of the sewage inlet pipe 2, thereby reducing the rate at which the sludge is extracted.

[0041] In order to solve the above technical problems, the invention also includes a lever 5, one end of which is fixedly connected to the outer wall of the transmission shaft 12, and the lever 5 is vertically arranged between the transmission shaft 12. When the transmission shaft 12 rotates, the lever 5 rotates accordingly, and the rotating lever 5 collides with the difficult-to-degrade waste, gravel and iron products blocked at one end of the blocking ring 7, thereby pushing the difficult-to-degrade waste, gravel and iron products away, thereby increasing the suction force of the extraction end of the sewage pump 1 on the sludge, allowing the sludge to smoothly enter the inner cavity of the sewage inlet pipe 2.

[0042] In this embodiment, multiple blocking rings 7 are located between the lever 5 and the extraction end of the sewage pump 1, and the outer wall of the transmission shaft 12 is rotatably sleeved with multiple support plates 8 for supporting the blocking rings 7. The outer walls of the multiple support plates 8 are fixedly connected to the ends of the multiple blocking rings 7 away from the lever 5 at the same time, and the ends of the multiple support plates 8 away from the transmission shaft 12 are fixedly connected to the inner wall of the sewage inlet pipe 2. The multiple support plates 8 can support one end of the multiple blocking rings 7 to prevent the multiple blocking rings 7 from shaking under the suction force of the extraction end of the sewage pump 1 and when sludge passes through the two blocking rings 7 into the inner cavity of the sewage inlet pipe 2 and collides with the blocking rings 7, thereby improving the stability of the blocking rings 7 and the firmness of the connection between the blocking rings 7 and the inner wall of the sewage inlet pipe 2.

[0043] A plurality of blocking rings 7 are located between the support plate 8 and the lever 5, and the lever 5 is located outside the sewage inlet pipe 2, so that the lever 5 can push away the difficult-to-degrade waste, gravel and iron products on one end of the blocking ring 7 to prevent the support plate 8 from obstructing the rotating lever 6.

[0044] When the sewage pump 1 is extracting sludge, the difficult-to-degrade waste and gravel whose size is smaller than the distance between two adjacent blocking rings 7 will pass through the two adjacent blocking rings 7 and enter the inner cavity of the sewage inlet pipe 2. Since the size of the extraction end of the sewage pump 1 is limited, the difficult-to-degrade waste and gravel entering the inner cavity of the sewage inlet pipe 2 are easily accumulated at the extraction end of the sewage pump 1, thereby reducing the suction force of the extraction end of the sewage pump 1, causing the sewage pump 1 to fail to work normally.

[0045] When the sewage pump 1 is operating normally, the difficult-to-degrade waste, gravel and iron products of the same size as the distance between two adjacent blocking rings 7 enter between the two adjacent blocking rings 7 under the suction of the sewage pump 1 and are blocked by the two adjacent blocking rings 7, causing the difficult-to-degrade waste, gravel and iron products to stay between the two adjacent blocking rings 7. When the number of difficult-to-degrade waste, gravel and iron products staying between the two adjacent blocking rings 7 is large, the suction force of the extraction end of the sewage pump 1 and the rate at which sludge enters the inner cavity of the sewage inlet pipe 2 will still be reduced.

[0046] In order to solve the technical problems mentioned above, a plurality of shift blocks 6 are fixedly installed on the outer wall of the shift rod 5. The plurality of shift blocks 6 are staggered with the plurality of blocking rings 7. The ends of the plurality of shift blocks 6 away from the shift rod 5 extend between two adjacent blocking rings 7. When the shift rod 5 rotates along with the transmission shaft 12, the plurality of shift blocks 6 rotate between two adjacent blocking rings 7. When the rotating shift blocks 6 come into contact with the difficult-to-degrade waste, gravel and iron products remaining between the two adjacent blocking rings 7, thrust is applied to the difficult-to-degrade waste, gravel and iron products until the difficult-to-degrade waste, gravel and iron products are pushed to the outside of the two adjacent blocking rings 7. Thus, the difficult-to-degrade waste, gravel and iron products remaining between the two adjacent blocking rings 7 can be cleaned, thereby improving the rate at which the extraction end of the sewage pump 1 extracts sludge.

[0047] When extracting sludge, the sludge enters the inner cavity of the sewage inlet pipe from two adjacent blocking rings, while the difficult-to-degrade waste, gravel and iron products whose size is larger than the distance between the two adjacent blocking rings are blocked by the blocking ring 7, so that they cannot enter the inner cavity of the sewage inlet pipe, so that the sludge around the sewage inlet pipe can be quickly extracted to the sludge collection point, so that the sewage pump can operate normally and extract the sludge normally, reducing the impact of the sewage pump on the normal discharge of sludge at the bottom of the river.

[0048] In this embodiment, the blocking ring 7, the lever 5 and the shifting block 6 form a blocking portion for blocking the hard-to-degrade flexible waste (such as plastic bags, plastic films and plastic building materials, etc.) and hard granular impurities, which can reduce the entry of the flexible impurities and the hard impurities into the interior of the sewage pump 1 and avoid clogging of the sewage pump 1. The lever 5 and the shifting block 6 can shift the flexible waste and the hard granular impurities blocked by the blocking ring 7 and keep the flexible waste and the hard granular impurities away from the sewage inlet pipe 2.

[0049] According to the above embodiment, after a long period of time, the minerals in the silt at the bottom of the river channel may undergo chemical reactions, such as precipitation of calcium carbonate or formation of iron and manganese oxides. These substances will cement the silt particles and harden them. At the same time, as time goes by, the weight of the overlying sediments and external pressures such as water flow and waves cause the silt particles to be closely arranged, reduce pores, increase density, and thus harden. After the silt hardens, the sewage inlet pipe 2 cannot be buried by the silt, resulting in the silt being unable to be extracted into the interior of the sewage inlet pipe 2.

[0050] In order to solve the above technical problems, a dredging assembly is also provided on the outer wall of the sewage inlet pipe 2, which can crush the cemented silt at the bottom of the river channel. The dredging assembly includes a dredging rod 3, one end of which is rotatably installed with a sleeve, the outer wall of the sleeve is fixedly connected to the outer wall of the sewage inlet pipe 2, the outer wall of the dredging rod 3 is fixedly sleeved with a spiral blade in the vertical direction, and a driving motor for its own rotation is fixedly installed on the top of the dredging rod 3, the outer wall of the driving motor is fixedly connected to the outer wall of the sewage inlet pipe 2, and the power output end of the driving motor is fixedly connected to the top of the dredging rod 3. When the driving motor rotates, the dredging rod 3 rotates rapidly, and under the action of the spiral blades, the bottom of the dredging rod 3 drills into the silt, thereby crushing the cemented silt, stones and waste at the bottom of the river channel, and transmitting the crushed cemented silt, stones and waste in a direction close to the sewage inlet pipe 2, so as to extract the crushed cemented silt, stones and waste into the interior of the sewage inlet pipe 2.

[0051] The end of the dredging rod 3 away from the driving motor is inclined toward the central axis direction close to the bottom of the sewage inlet pipe 2. A plurality of dredging rods 3 are installed in a circular distribution and rotate around the middle of the sewage inlet pipe 2. When the plurality of dredging rods 3 rotate, the sludge directly below the sewage inlet pipe 2 can be quickly crushed to facilitate the sewage inlet pipe 2 to sink into the sludge, thereby quickly extracting the sludge around the sewage inlet pipe 2 through the sewage pump 1.

[0052] Since multiple dredging rods 3 are arranged at an angle, when the dredging rods 3 break the cemented silt, the cemented silt forms a conical pit. As the dredging rods 3 continue to move downward, the spiral blades continue to cut the narrower part of the conical pit, thereby continuously expanding the conical pit at the narrower part, preventing the sewage inlet pipe 2 and the sewage pump 1 from colliding with the inner wall of the pit when moving downward, thereby providing sufficient downward space for the sewage inlet pipe 2 and the sewage pump 1. As the sewage pump 1 moves downward, the broken cemented silt in the pit can be transmitted to the silt collection point through the transmission pipe 4, thereby being able to break and extract the thicker cemented silt layer.

[0053] When the silt in the river channel is pumped and cleaned, due to the presence of metal impurities, bricks, tiles and other relatively hard block impurities in the silt, under the action of the suction of the sewage pump 1, it is easy to cause blockage to the blocking ring 7 and other similar grids. In serious cases, it will enter the sewage pump and cause damage to the impeller and crushing blade inside the sewage pump. Therefore, a spiral silt removal plate 11 is fixedly installed on the top of the transmission shaft 12, such as Figure 5 As shown, in order to better show the relationship between the transmission shaft 12 and the spiral silt removal plate 11, Figure 5The spiral silt removal plate 11 and the transmission shaft 12 are shown separately. In fact, the outermost circle of the spiral silt removal plate 11 is relatively close to the sewage inlet pipe 2. The spiral silt removal plate 11 is a spiral structure formed by bending a metal strip, and the center of the spiral structure bulges upward to form a structure similar to a truncated cone, and the small end of the spiral silt removal plate 11 extends away from the sewage inlet pipe 2. After the sewage pump 1 is sunk to the bottom of the river channel, the small end of the spiral silt removal plate 11 is inserted into the silt under the gravity of the sewage pump 1. When the sewage pump 1 is started to extract the silt at the bottom of the river channel, the spiral silt removal plate 11 rotates with the transmission shaft 12. At this time, the silt at the bottom of the river channel enters the inner cavity of the sewage inlet pipe 2 from the gap of the spiral silt removal plate 11, and the silt at the bottom of the river channel can be extracted.

[0054] In this embodiment, the blocking part is a spiral silt removal plate 11, which can block hard-to-degrade flexible waste (such as plastic bags, plastic films and plastic building materials, etc.) and hard granular impurities, and push away the impurities. When the silt at the bottom of the river channel is mixed with hard-to-degrade waste and gravel and harder granular impurities such as iron products, the rotating spiral silt removal plate 11 will come into contact with it. As the spiral silt removal plate 11 rotates, the hard-to-degrade waste and harder granular impurities will follow the spiral silt removal plate 11 and gradually move outward, thereby pushing the hard-to-degrade waste and harder granular impurities mixed in the silt away from the sewage inlet pipe 2, effectively preventing the large-sized hard-to-degrade waste and gravel and iron products from entering the inner cavity of the sewage inlet pipe 2 and blocking the extraction end of the sewage pump 1.

[0055] As the sewage pump 1 continues to move downward, the outer wall of the spiral silt cleaning plate 11 collides with larger stones or waste. Since the outer wall of the spiral silt cleaning plate 11 is curved, when hard particles collide, the contact part is a curved structure. The collision force is along the tangent direction of the curved structure and basically will not make vertical contact with the hard particles, which greatly reduces the collision force and can reduce or even avoid deformation of the spiral silt cleaning plate 11.

[0056] When the outer wall of the spiral silt cleaning plate 11 collides with stones or waste, it can also rotate along the tangent direction of the collision surface to prevent the rotating spiral silt cleaning plate 11 from getting stuck. At the same time, as the spiral silt cleaning plate 11 continues to move downward and continues to contact with stones or waste, the stones or waste apply a thrust to the spiral silt cleaning plate 11 to move away from itself, which can change the downward trajectory of the sewage pump 1, allowing the sewage pump 1 to continue to move downward and continue to extract silt at the bottom of the river.

[0057] In this embodiment, when extracting sludge, the spiral silt removal plate 11 can continuously rotate under the drive of the rotating shaft 12 and stir the sludge, so that the sludge and the water in the river channel are better mixed, making it more convenient for the sewage pump 1 to extract the sludge from the river channel.

[0058] When the sewage pump 1 is extracting the cemented sludge, the small end of the spiral silt cleaning plate 11 is inserted into the interior of the cemented sludge from the top of the cemented sludge. As the spiral silt cleaning plate 11 continues to rotate, the spiral silt cleaning plate 11 provides centrifugal force to the surrounding sludge, thereby breaking the cemented sludge and throwing out the broken cemented sludge, thereby forming a truncated cone-shaped pit on the top of the cemented sludge. As the spiral silt cleaning plate 11 continues to move downward, the spiral silt cleaning plate 11 continues to cut the narrower part of the truncated cone-shaped pit, thereby continuously expanding the truncated cone-shaped pit at the narrower part, preventing the sewage inlet pipe 2 and the sewage pump 1 from colliding with the inner wall of the pit when moving downward, thereby providing sufficient downward space for the sewage inlet pipe 2 and the sewage pump 1 to move downward. As the sewage pump 1 moves downward, the broken cemented silt passes through the gap outside the spiral silt cleaning plate 11 and enters the inner cavity of the sewage inlet pipe 2, so that the cemented sludge can be extracted.

[0059] A resistance reduction block 10 is fixedly installed on the small end of the spiral silt cleaning plate 11. The resistance reduction block 10 is set to a conical structure, and the large end of the resistance reduction block 10 and the small end of the spiral silt cleaning plate 11 are fixedly connected, so that the small end of the spiral silt cleaning plate 11 can be quickly inserted into the interior of the cemented silt, and can reduce the resistance when the spiral silt cleaning plate 11 moves downward, thereby improving the smoothness of the spiral silt cleaning plate 11 when moving downward.

[0060] The crushing blade 9, the shifting block 6 and the spiral silt cleaning plate 11 are all made of nickel alloy, which improves the strength of the crushing blade 9, the shifting block 6 and the spiral silt cleaning plate 11, prevents the crushing blade 9, the shifting block 6 and the spiral silt cleaning plate 11 from deformation and breakage when colliding with difficult-to-degrade waste, gravel and iron products, and extends the service life of the crushing blade 9, the shifting block 6 and the spiral silt cleaning plate 11.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A river silt removal device, characterized in that: include Sewage pump (1); A sewage inlet pipe (2) has one end detachably connected to the water inlet end of the sewage pump (1), and a transmission shaft (12) is fixedly mounted on the power output end of the sewage pump (1); The barrier part is fixedly connected to one end of the rotating shaft (12) located outside the sewage pump (1), and the rotating shaft is used to rotate with the barrier part. When the sewage pump (1) extracts sludge, the sludge can pass through the barrier part and be sucked by the sewage pump. The barrier part can block waste and particulate impurities in the river channel, and can also move the waste and particulate impurities away from the sewage inlet pipe (2); The dredging assembly is arranged on the outer wall of the sewage inlet pipe (2) and can break up the silt compacted at the bottom of the river channel.

2. A river silt removal device according to claim 1, characterized in that: The barrier portion comprises: A plurality of blocking rings (7), the plurality of blocking rings (7) being rotatably connected to the outer wall of the transmission shaft (12), and the diameters of the plurality of blocking rings (7) increasing in sequence in a direction approaching the inner wall of the sewage inlet pipe (2) with the central axis of the transmission shaft (12) as a starting point; A shifting rod (5) has one end fixedly connected to the outer wall of the transmission shaft (12), and the shifting rod (5) and the transmission shaft (12) are vertically arranged. A plurality of shifting blocks (6) are fixedly mounted on the outer wall of the shifting rod (5), and the plurality of shifting blocks (6) are staggeredly arranged with the plurality of blocking rings (7). One end of the plurality of shifting blocks (6) away from the shifting rod (5) extends between two adjacent blocking rings (7).

3. A river silt removal device according to claim 2, characterized in that: A plurality of blocking rings (7) are located between the lever (5) and the extraction end of the sewage pump (1); a plurality of support plates (8) supporting the blocking rings (7) are rotatably sleeved on the outer wall of the transmission shaft (12); the outer walls of the plurality of support plates (8) are simultaneously fixedly connected to one end of the plurality of blocking rings (7) away from the lever (5); and the ends of the plurality of support plates (8) away from the transmission shaft (12) are all fixedly connected to the inner wall of the sewage inlet pipe (2).

4. A river silt removal device according to claim 3, characterized in that: A crushing blade (9) for crushing gravel is fixedly sleeved on the outer wall of the transmission shaft (12), and the crushing blade (9) is located between the support plate (8) and the extraction end of the sewage pump (1).

5. A river silt removal device according to claim 1, characterized in that: A transmission pipe (4) is detachably mounted on the water outlet end of the sewage pump (1).

6. A river silt removal device according to claim 1, characterized in that: The blocking portion is a spiral silt cleaning plate (11), which is fixedly mounted on the top of the transmission shaft (12). The spiral silt cleaning plate (11) is arranged as a truncated cone structure, and the small end of the spiral silt cleaning plate (11) extends in a direction away from the sewage inlet pipe (2).

7. A river silt removal device according to claim 6, characterized in that: A resistance reduction block (10) is fixedly mounted on the small end of the spiral silt removal plate (11); the resistance reduction block (10) is configured as a conical structure; and the large end of the resistance reduction block (10) is fixedly connected to the small end of the spiral silt removal plate (11).

8. A river silt removal device according to claim 7, characterized in that: The crushing blade (9), the shifting block (6) and the spiral silt removal plate (11) are all made of nickel alloy.

9. A river silt removal device according to claim 1, characterized in that: The dredging assembly comprises a dredging rod (3), one end of which is rotatably mounted with a sleeve, the outer wall of the sleeve being fixedly connected to the outer wall of the sewage inlet pipe (2), the outer wall of the dredging rod (3) being fixedly sleeved with a spiral blade in a vertical direction, and a driving motor for self-rotation being fixedly mounted on the top of the dredging rod (3).

10. A river channel silt removal device according to claim 9, characterized in that: The end of the dredging rod (3) away from the driving motor is arranged to be inclined in a direction close to the bottom of the sewage inlet pipe (2).

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