Municipal road drainage filtering device

Abstract

The invention belongs to the technical field of road drainage, and discloses a municipal road drainage filtering device which is technically characterized by comprising a drainage well, a drainage pipe is installed at the bottom end of the side wall of the drainage well, a well lid is detachably installed on the surface of the drainage well, and multiple sets of water guide grooves distributed side by side are formed in the surface of the well lid; a filtering plate is fixedly installed in an inner cavity of the drainage well, an anti-blocking mechanism matched with the water guiding groove is arranged on the surface of the well lid, the anti-blocking mechanism comprises a grating box, a positioning assembly and an adjusting assembly, and a smashing mechanism matched with the filtering plate is arranged in the inner cavity of the drainage well. The crushing mechanism comprises a cutting blade, a vertical telescopic assembly and a transverse rotating assembly, when the water guide groove is blocked and the depth of accumulated water on the road surface is continuously increased, the positioning assembly and the adjusting assembly are arranged to be matched with each other, the relative position of the grating box and the water guide groove can be automatically adjusted, and then the water guide groove is automatically dredged; the pavement accumulated water discharge is effectively promoted.

Description

Technical Field

[0001] The invention relates to the technical field of road drainage, in particular to a municipal road drainage filtering device. Background Art

[0002] Municipal roads are usually equipped with drainage pipes underneath, and drainage wells are usually installed on the road surface to connect to the drainage pipes. When it rains, the drainage wells and drainage pipes work together to automatically drain the water on the road.

[0003] When the rainfall is too heavy, the road will be seriously flooded. Impurities such as branches and leaves on the road surface can easily clog the wells on the surface of the drainage wells. The water on the road cannot be effectively diverted to the drainage wells, further causing the degree of waterlogging on the road to worsen. In severe cases, it may even cause vehicles to be unable to drive normally on the road and pedestrians to be unable to walk normally on the road. Summary of the Invention

[0004] The object of the present invention is to provide a municipal road drainage filtering device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A municipal road drainage filter device comprises a drainage well, a drainage pipe is installed at the bottom end of the side wall of the drainage well, a well cover is detachably installed on the surface of the drainage well, a plurality of water guide grooves distributed in parallel are provided on the surface of the well cover, a filter plate is fixedly installed on the inner cavity of the drainage well, a plurality of filter meshes are arranged on the surface of the filter plate, an anti-blocking mechanism that cooperates with the water guide groove is provided on the surface of the well cover, the anti-blocking mechanism comprises a grille box, a positioning assembly and an adjustment assembly, the grille box is provided with a plurality of groups, the positioning assembly is located on the surface of the well cover and is connected to the grille box, the positioning assembly is used to control the grille box to be directly below the water guide groove, the adjustment assembly is located on the surface of the well cover and is connected to the grille box The positioning assembly is connected, and the adjustment assembly controls the grille box to move vertically upward to above the water guide trough by cooperating with the positioning assembly. The inner cavity of the drainage well is provided with a crushing mechanism that cooperates with the filter plate. The crushing mechanism includes a cutting blade, a vertical telescopic assembly and a horizontal rotation assembly. The cutting blade is provided with multiple groups and is located above the filter plate. The vertical telescopic assembly is located in the drainage well and connected to the cutting blade. The vertical telescopic assembly is used to control the cutting blade to move back and forth in the vertical direction. The horizontal rotation assembly is connected to the vertical telescopic assembly. After a single reciprocating movement of the cutting blade, the horizontal rotation assembly is used to adjust the position of multiple groups of cutting blades in the horizontal direction.

[0007] As a further solution of the present invention: the positioning assembly includes a rectangular ring-shaped storage cavity opened on the surface of the manhole cover, the storage cavity is sleeved on the outside of the water guide groove, and a transverse groove is opened on the surface of the manhole cover, and the transverse groove is respectively connected with multiple groups of water guide grooves and the storage cavity. A positioning ring is placed in the storage cavity, and a connecting rod is fixedly installed on the side wall of the positioning ring. The end of the connecting rod away from the positioning ring passes through the transverse groove and the water guide groove and is connected to the grille box.

[0008] As a further solution of the present invention: the adjustment component includes multiple groups of traction ropes fixedly installed in the storage cavity, the end of the traction rope away from the storage cavity is connected to the positioning ring, an annular cavity is opened inside the positioning ring, and the positioning ring and the grille box are both made of lightweight materials.

[0009] As a further solution of the present invention: the vertical telescopic assembly includes a fixed groove opened in the middle of the manhole cover, and two groups of fixed plates distributed in parallel in the vertical direction are fixedly installed in the inner cavity of the drainage well, and the two groups of fixed plates are slidably installed with a column in the vertical direction. A control plate is fixedly installed on the top of the column, and the control plate is arranged to be an arc structure and extends to the top of the manhole cover through the fixed groove. A baffle is fixedly installed on the surface of the column, and an extrusion spring is fixedly installed on the surface of the fixed plate below, and the extrusion spring surrounds the outside of the column and is connected to the baffle. Multiple groups of cutting blades are arranged at the bottom end of the column.

[0010] As a further solution of the present invention: the horizontal rotation component includes a through hole opened on the surface of the filter plate, the bottom end of the column is rotatably installed with a bottom rod, multiple groups of cutting blades are fixedly installed in a ring shape on the top of the bottom rod, the bottom end of the bottom rod extends through the through hole to the bottom of the filter plate and is fixedly installed with multiple groups of guide blades.

[0011] As a further solution of the present invention: a limit plate is fixedly installed on the bottom end of the side wall of the grille box.

[0012] As a further solution of the present invention: a plurality of groups of reinforcing ribs are provided inside the manhole cover and are respectively located directly below the receiving cavity.

[0013] Compared with existing technologies, the present invention has the following advantages: when the depth of road water accumulation continues to increase due to clogging of the water channel, the positioning assembly and the adjustment assembly cooperate to automatically adjust the relative position of the grille box and the water channel, thereby automatically clearing the water channel and effectively facilitating the drainage of road water accumulation. This solves the current problem of impurities such as branches and leaves easily clogging the wellbore on the surface of the drainage well, which leads to increased road water accumulation.

[0014] By arranging the vertical telescopic component and the horizontal rotating component to cooperate with each other, the position of the cutting blade can be automatically adjusted, so that the impurities trapped on the surface of the filter plate can be efficiently crushed, effectively preventing the impurities from clogging the filter plate and the drain pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a municipal road drainage filtration device provided in an embodiment of the present invention Figure 1 .

[0016] Figure 2 A schematic diagram of the three-dimensional structure of a municipal road drainage filtration device provided in an embodiment of the present invention Figure 2 .

[0017] Figure 3 This is a schematic diagram of the main structure of a municipal road drainage filtration device provided in an embodiment of the present invention.

[0018] Figure 4 The figure is a schematic diagram of the internal cross-sectional structure of a drainage well in a municipal road drainage filtration device provided in an embodiment of the present invention.

[0019] Figure 5 This is a schematic structural diagram of a manhole cover in a municipal road drainage filtration device provided in an embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram of a positioning ring and its connection structure in a municipal road drainage filtration device provided in an embodiment of the present invention.

[0021] Figure 7 This is a schematic diagram of a cutting blade and its connection structure in a municipal road drainage filtering device provided in an embodiment of the present invention.

[0022] Figure 8 This is a structural schematic diagram of a grille box in a municipal road drainage filtration device provided in an embodiment of the present invention.

[0023] Figure 9 for Figure 3 Schematic diagram of the enlarged structure of A in the figure.

[0024] Among them: 1-drainage well, 11-drainage pipe, 2-manhole cover, 21-water guide groove, 3-anti-blocking mechanism, 31-grid box, 32-positioning assembly, 321-storage cavity, 322-horizontal groove, 323-positioning ring, 324-connecting rod, 33-adjustment assembly, 331-traction rope, 332-cavity, 4-filter plate, 5-crushing mechanism, 51-cutting blade, 52-vertical telescopic assembly, 521-fixed groove, 522-fixed plate, 523-column, 524-control panel, 525-baffle, 526-extrusion spring, 53-lateral rotation assembly, 531-through hole, 532-bottom rod, 533-guide fan blade, 6-limiting plate, 7-reinforcement rib. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other.

[0026] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0027] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 The figure shows a structural diagram of a municipal road drainage filter device provided by an embodiment of the present invention, including a drainage well 1, a drainage pipe 11 is installed at the bottom end of the side wall of the drainage well 1, a manhole cover 2 is detachably installed on the surface of the drainage well 1, a plurality of groups of parallel water guide grooves 21 are opened on the surface of the manhole cover 2, a filter plate 4 is fixedly installed on the inner cavity of the drainage well 1, a plurality of groups of evenly distributed filter meshes are arranged on the surface of the filter plate, an anti-blocking mechanism 3 that cooperates with the water guide groove 21 is provided on the surface of the manhole cover 2, and the anti-blocking mechanism 3 includes a grille box 31, a positioning assembly 32 and an adjustment assembly 33. The grille box 31 is provided with multiple groups, the positioning assembly 32 is located on the surface of the manhole cover 2 and is connected to the grille box 31, the positioning assembly 32 is used to control the grille box 31 to be directly below the water guide groove 21, and the adjustment assembly 33 is located at The surface of the manhole cover 2 is connected to the positioning assembly 32, and the adjustment assembly 33 controls the grille box 31 to move vertically upward to above the water guide trough 21 by cooperating with the positioning assembly 32. The inner cavity of the drainage well 1 is provided with a crushing mechanism 5 that cooperates with the filter plate 4. The crushing mechanism 5 includes a cutting blade 51, a vertical telescopic assembly 52 and a horizontal rotation assembly 53. The cutting blade 51 is provided with multiple groups and is located above the filter plate 4. The vertical telescopic assembly 52 is located in the drainage well 1 and is connected to the cutting blade 51. The vertical telescopic assembly 52 is used to control the cutting blade 51 to move back and forth in the vertical direction. The horizontal rotation assembly 53 is connected to the vertical telescopic assembly 52. After a single reciprocating movement of the cutting blade 51, the horizontal rotation assembly 53 is used to adjust the position of multiple groups of cutting blades 51 in the horizontal direction.

[0028] Drain well 1 is installed on the road surface, with the manhole cover 2 flush with the road surface. Initially, the positioning assembly 32 controls the entire grille box 31 to be directly below the water channel 21. The vertical telescopic assembly 52 positions the cutting blades 51, with multiple sets of cutting blades 51 positioned above the filter plates 4. During rain, rainwater from the road flows through the water channel 21 into the drain well 1. The filter plates 4 further filter the rainwater, which then flows into the drain pipe 11 for discharge. Impurities in the rainwater are trapped on the surface of the filter plates 4.

[0029] When impurities on the road surface cause blockage of the water channel 21 on the surface of the manhole cover 2, the accumulated water on the road surface cannot be effectively discharged, and the depth of the accumulated water on the road surface continues to increase. The adjusting component 33 cooperates with the positioning component 32 to automatically control multiple groups of grille boxes 31 to move vertically upward to above the water channel 21. When the grille boxes 31 move upward, they can push the impurities blocking the surface of the water channel 21 to move outward synchronously. At this time, the surface of the water channel 21 is effectively unblocked, and the accumulated water on the road surface automatically flows through the grille boxes 31 and the water channel 21 into the drainage well 1. When the accumulated water on the road surface is drained, the adjusting component 33 cooperates with the positioning component 32 to automatically control multiple groups of grille boxes 31 to automatically move to directly below the water channel 21, which can effectively prevent the grille boxes 31 from interfering with vehicles and pedestrians above the manhole cover 2.

[0030] When vehicles and pedestrians pass over the surface of the manhole cover 2, the vertical telescopic assembly 52 controls the cutting blades 51 to move back and forth vertically above the filter plate 4. As the cutting blades 51 move downward, they can crush large impurities trapped on the surface of the filter plate 4. Once the impurities are crushed to a suitable size, they flow through the filter mesh with the water flow and into the drain pipe 11. As the cutting blades 51 reciprocate vertically, the horizontal rotation assembly 53 can synchronously adjust the positions of multiple sets of cutting blades 51 in the horizontal direction, allowing the cutting blades 51 to comprehensively crush impurities on the surface of the filter plate 4.

[0031] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 As shown, as a preferred embodiment of the present invention, the positioning assembly 32 includes a rectangular ring-shaped receiving cavity 321 opened on the surface of the manhole cover 2, the receiving cavity 321 is sleeved on the outside of the water guide groove 21, and a transverse groove 322 is opened on the surface of the manhole cover 2, and the transverse groove 322 is respectively connected with multiple groups of water guide grooves 21 and the receiving cavity 321, and a positioning ring 323 is placed in the receiving cavity 321, and a connecting rod 324 is fixedly installed on the side wall of the positioning ring 323, and the end of the connecting rod 324 away from the positioning ring 323 passes through the transverse groove 322 and the water guide groove 21 and is connected to the grille box 31.

[0032] Initially, the entire positioning ring 323 is located in the receiving chamber 321. The positioning ring 323 and the connecting rod 324 cooperate with each other to support and position the grille box 31. The grille box 31 is directly below the water channel 21. During normal drainage, the positioning ring 323 and the grille box 31 will not interfere with the drainage process. When impurities on the road surface cause blockage of the water channel 21 on the surface of the manhole cover 2, the road surface water cannot be effectively discharged, and the depth of the road surface water continues to increase. The adjustment component 33 controls the positioning ring 323 to move upward to above the manhole cover 2. The positioning ring 323 cooperates with the connecting rod 324 to drive the grille box 31 to move upward to above the water channel 21. After the road surface water is drained, the adjustment component 33 controls the positioning ring 323 to move downward to the receiving chamber 321. The positioning ring 323 cooperates with the connecting rod 324 to drive the grille box 31 to move below the water channel 21 again.

[0033] like Figure 2 、 Figure 3 、 Figure 9 As shown, as a preferred embodiment of the present invention, the adjustment component 33 includes multiple groups of traction ropes 331 fixedly installed in the storage cavity 321, and the end of the traction rope 331 away from the storage cavity 321 is connected to the positioning ring 323, and an annular cavity 332 is opened inside the positioning ring 323. The positioning ring 323 and the grille box 31 are both made of lightweight materials.

[0034] When impurities on the road surface cause blockage of the water guide groove 21 on the surface of the manhole cover 2, the water on the road surface cannot be effectively discharged, and the depth of the water on the road surface continues to increase. Under the buoyancy of the accumulated water, the positioning ring 323 moves vertically upward, and the traction rope 331 limits the upward movement of the positioning ring 323. When the water on the road surface is drained, the positioning ring 323 moves downward again into the storage cavity 321.

[0035] like Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 As shown, as a preferred embodiment of the present invention, the vertical telescopic component 52 includes a fixed groove 521 opened in the middle of the manhole cover 2, and the inner cavity of the drainage well 1 is fixedly installed with two groups of fixed plates 522 distributed in parallel in the vertical direction, and the two groups of fixed plates 522 are slidably installed with a column 523 in the vertical direction. The top of the column 523 is fixedly installed with a control plate 524, and the control plate 524 is set to an arc structure and extends to the top of the manhole cover 2 through the fixed groove 521. A baffle 525 is fixedly installed on the surface of the column 523, and an extrusion spring 526 is fixedly installed on the surface of the fixed plate 522 below. The extrusion spring 526 surrounds the outside of the column 523 and is connected to the baffle 525. Multiple groups of cutting blades 51 are arranged at the bottom end of the column 523.

[0036] The two sets of fixing plates 522 are positioned against the posts 523, and the compression springs 526 apply a vertical upward thrust to the baffle 525, further positioning the posts 523. The control plate 524 at the top of the posts 523 passes through the fixing slots 521 and moves above the manhole cover 2. When vehicles or pedestrians pass over the surface of the manhole cover 2, they apply pressure to the control plate 524, pushing it vertically downward. The control plate 524 and the posts 523 cooperate with each other to drive the cutting blade 51 to move downward synchronously, crushing impurities trapped on the surface of the filter plate 4. After the vehicle or pedestrian releases the pressure on the control plate 524, the compression springs 526 push the posts 523 and the cutting blade 51 upward to their original positions. This cycle repeats, and the cutting blade 51 can effectively crush impurities on the surface of the filter plate 4.

[0037] like Figure 3 、 Figure 4 、 Figure 7 As shown, as a preferred embodiment of the present invention, the horizontal rotation component 53 includes a through hole 531 opened on the surface of the filter plate 4, and the bottom end of the column 523 is rotatably mounted with a bottom rod 532, and multiple groups of cutting blades 51 are fixedly mounted in a ring shape on the top of the bottom rod 532, and the bottom end of the bottom rod 532 extends through the through hole 531 to the bottom of the filter plate 4 and is fixedly mounted with multiple groups of guide blades 533.

[0038] When the column 523 moves vertically, it drives the bottom rod 532 and the guide blades 533 to move synchronously along the vertical direction. When there is water in the drainage well 1, when the guide blades 533 move in the water, the accumulated water exerts a reverse thrust on the guide blades 533, thereby pushing the guide blades 533 to rotate. The guide blades 533 drive the bottom rod 532 to rotate synchronously, and the bottom rod 532 drives the cutting blades 51 to rotate synchronously in the horizontal plane, thereby automatically adjusting the positions of multiple sets of cutting blades 51. Multiple sets of cutting blades 51 can perform all-round crushing of impurities on the surface of the filter plate 4.

[0039] like Figure 1 、 Figure 5 、 Figure 8 As shown in FIG. 1 , as a preferred embodiment of the present invention, a limit plate 6 is fixedly mounted on the bottom end of the side wall of the grille box 31. The limit plate 6 can further limit the upward movement of the grille box 31, effectively preventing the grille box 31 from moving above the manhole cover 2 as a whole.

[0040] like Figure 1 、 Figure 5 、 Figure 9 As shown in FIG. 1 , as a preferred embodiment of the present invention, the manhole cover 2 is provided with a plurality of groups of reinforcing ribs 7 respectively located directly below the receiving cavity 321 . The reinforcing ribs 7 can effectively improve the structural strength of the manhole cover 2 .

[0041] The present invention operates as follows: drainage well 1 is installed on the road surface, with manhole cover 2 flush with the road surface. Initially, positioning ring 323 is entirely located within receiving cavity 321. Positioning ring 323 and connecting rod 324 cooperate to support and position grille box 31, which is positioned directly below gutter 21. During rain, rainwater from the road flows through gutter 21 into drainage well 1, where it is further filtered by filter plate 4. The filtered water then flows into drain pipe 11 for discharge, with impurities trapped on the surface of filter plate 4.

[0042] When impurities on the road surface clog the water channel 21 on the manhole cover 2, the accumulated water cannot be effectively drained, and the depth of the accumulated water continues to increase. Under the buoyancy of the accumulated water, the positioning ring 323 moves vertically upward. The traction rope 331 limits the upward movement of the positioning ring 323. The positioning ring 323 cooperates with the connecting rod 324 to simultaneously drive the grille box 31 upward to above the water channel 21. As the grille box 31 moves upward, it pushes the impurities blocking the surface of the water channel 21 outward. At this time, the surface of the water channel 21 is effectively cleared, and the accumulated water on the road automatically flows through the grille box 31 and the water channel 21 into the drainage well 1. When the accumulated water on the road is completely drained, the positioning ring 323 moves downward again into the storage chamber 321. The positioning ring 323 cooperates with the connecting rod 324 to drive the grille box 31 back to below the water channel 21. This effectively prevents the grille box 31 from interfering with vehicles and pedestrians above the manhole cover 2.

[0043] When a vehicle or pedestrian passes over the surface of the manhole cover 2, they apply pressure to the control panel 524, pushing it vertically downward. The control panel 524 cooperates with the upright post 523 to drive the cutting blade 51 to move downward synchronously. The cutting blade 51 can crush impurities trapped on the surface of the filter plate 4. After the vehicle or pedestrian releases the pressure on the control panel 524, the compression spring 526 pushes the upright post 523 and the cutting blade 51 upward to their original position. This cycle repeats, and the cutting blade 51 can effectively crush impurities on the surface of the filter plate 4. When the upright post 523 moves vertically, it drives the bottom rod 532 and the guide blades 533 to move synchronously vertically. When water accumulates in the drainage well 1, the guide blades 533 move in the accumulated water, exerting a reverse thrust on the guide blades 533, which in turn drives the guide blades 533 to rotate. The guide blades 533 drive the bottom rod 532 to rotate synchronously, which in turn drives the cutting blades 51 to rotate synchronously in the horizontal plane. This automatically adjusts the positions of the multiple sets of cutting blades 51, allowing the multiple sets of cutting blades 51 to comprehensively crush impurities on the surface of the filter plate 4. Once the impurities are crushed to a suitable size, they flow through the filter mesh along with the water flow and into the drain pipe 11.

[0044] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A municipal road drainage filtration device, comprising a drainage well, a drainage pipe installed at the bottom end of the side wall of the drainage well, a well cover detachably installed on the surface of the drainage well, and a plurality of parallelly distributed water guide grooves are provided on the surface of the well cover, characterized in that: A filter plate is fixedly installed in the inner cavity of the drainage well, and a plurality of groups of evenly distributed filter meshes are provided on the surface of the filter plate; The surface of the manhole cover is provided with an anti-blocking mechanism that cooperates with the water guide groove. The anti-blocking mechanism includes a grille box, a positioning component and an adjustment component. The grille box is provided with multiple groups; The positioning assembly is located on the surface of the manhole cover and is connected to the grille box. The positioning assembly is used to control the grille box to be directly below the water guide groove; The adjusting assembly is located on the surface of the manhole cover and is connected to the positioning assembly. The adjusting assembly cooperates with the positioning assembly to control the grille box to move vertically upward to above the water guide trough; The inner cavity of the drainage well is provided with a crushing mechanism that cooperates with the filter plate. The crushing mechanism includes a cutting blade, a vertical telescopic component and a horizontal rotating component. The cutting blades are provided in multiple groups and are located above the filter plate. The vertical telescopic assembly is located in the drainage well and is connected to the cutting blade, and the vertical telescopic assembly is used to control the cutting blade to move back and forth in the vertical direction; The horizontal rotation assembly is connected to the vertical telescopic assembly. After the cutting blades move back and forth once, the horizontal rotation assembly is used to adjust the positions of multiple groups of cutting blades in the horizontal direction.

2. A municipal road drainage filtration device according to claim 1, characterized in that: The positioning assembly includes a rectangular ring-shaped storage cavity opened on the surface of the manhole cover, the storage cavity is sleeved on the outside of the water guide groove, and a transverse groove is opened on the surface of the manhole cover, and the transverse groove is respectively connected to multiple groups of water guide grooves and the storage cavity. A positioning ring is placed in the storage cavity, and a connecting rod is fixedly installed on the side wall of the positioning ring. The end of the connecting rod away from the positioning ring passes through the transverse groove and the water guide groove and is connected to the grille box.

3. A municipal road drainage filtration device according to claim 2, characterized in that: The adjustment assembly includes multiple groups of traction ropes fixedly installed in the storage cavity. The end of the traction rope away from the storage cavity is connected to the positioning ring. An annular cavity is opened inside the positioning ring. The positioning ring and the grille box are both made of lightweight materials.

4. A municipal road drainage filtration device according to claim 1, characterized in that: The vertical telescopic assembly includes a fixed groove opened in the middle of the manhole cover, and two groups of fixed plates distributed in parallel in the vertical direction are fixedly installed in the inner cavity of the drainage well. The two groups of fixed plates are installed with a column sliding together in the vertical direction. The top of the column is fixedly installed with a control plate, and the control plate is arranged in an arc structure and extends to the top of the manhole cover through the fixed groove. A baffle is fixedly installed on the surface of the column, and an extrusion spring is fixedly installed on the surface of the fixed plate below. The extrusion spring surrounds the outside of the column and is connected to the baffle. Multiple groups of cutting blades are arranged at the bottom end of the column.

5. A municipal road drainage filtration device according to claim 4, characterized in that: The lateral rotation component includes a through hole opened on the surface of the filter plate, the bottom end of the column is rotatably mounted with a bottom rod, multiple groups of cutting blades are fixedly mounted in a ring shape on the top of the bottom rod, the bottom end of the bottom rod extends through the through hole to the bottom of the filter plate and is fixedly mounted with multiple groups of guide blades.

6. A municipal road drainage filtration device according to claim 1, characterized in that: A limiting plate is fixedly installed at the bottom end of the side wall of the grille box.

7. A municipal road drainage filtration device according to claim 2, characterized in that: A plurality of groups of reinforcing ribs are arranged inside the manhole cover and are respectively located directly below the receiving cavity.

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