Anti-blocking drainage pipe network water inlet for municipal engineering

Abstract

The invention discloses an anti-blocking drainage pipe network water inlet for municipal engineering, relates to the technical field of municipal engineering, and aims to solve the problem that water inlets of part of existing drainage pipe networks are easily blocked. According to the key points of the technical scheme, the device comprises a vertical pipe used for being communicated with a pipe network, a filtering covering part used for covering a pipe opening of the vertical pipe is arranged at the pipe opening of the vertical pipe, and an auxiliary filtering part with a top opening and a water outlet communicated with the vertical pipe is arranged on a water flow path on one side. Through the arrangement of the structure, the overall anti-blocking performance of the structure is better.

Description

Technical Field

[0001] The invention relates to the technical field of municipal engineering, and more specifically to an anti-blocking type water inlet of a drainage pipe network for municipal engineering. Background Art

[0002] The pipe network consists of pipes and their ancillary structures for collecting and transporting urban sewage, and is distributed in a network shape as a whole.

[0003] Pipeline network is a common municipal facility, usually buried underground, to achieve functions such as water collection and water delivery. The types and functions of pipeline networks are usually diverse. One of them is drainage pipeline network. Drainage pipeline network usually includes multiple water inlets, some of which are arranged near roads, so that water falling on the road can enter the drainage pipeline network in time with the help of water inlets, reducing the situation where water accumulates on the road and thus affects the safety of driving and pedestrians. The water inlets of existing pipeline networks usually need to be covered with manhole covers. The existing water inlets are usually accompanied by some inconveniences when in use. In extreme weather such as typhoon days, it is usually accompanied by strong winds and heavy rains, which will blow down a large number of leaves and heavy rains. The fallen leaves will be driven to the water inlet by the running water and block the hole between the manhole cover and the water inlet for water supply to enter the pipeline network, so that the degree of water accumulation near the water inlet is deepened, which is easy to affect the safety of pedestrians or vehicles passing by. Therefore, a structure is provided to solve the problem that the water inlets of some existing drainage pipeline networks are easily blocked.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a blockage-proof water inlet for a drainage network for municipal engineering.

[0006] The above technical purpose of the present invention is achieved through the following technical scheme: the anti-blocking water inlet of the drainage network for municipal engineering includes a vertical pipe for interconnecting with the network, a filter cover part for covering the pipe mouth of the vertical pipe is provided at the pipe mouth of the vertical pipe, and an auxiliary filter part with a top opening and a water outlet interconnected with the vertical pipe is provided on the water flow path on one side.

[0007] The present invention is further configured as follows: the filter cover portion includes a first water inlet area and a second water inlet area, the opening of the first water inlet area is normally open, the second water inlet area is located on a side close to the auxiliary filter portion, and the degree of opening of the second water inlet area is inversely proportional to the amount of water passing through the first water inlet area and the second water inlet area per unit time.

[0008] The present invention is further configured as follows: the filter cover portion includes a first filter element, a first support element and a support ring element which are arranged in sequence from top to bottom, the cross-sectional shape of the first filter element is set to a C shape, a plurality of filter holes are evenly distributed on the end surface of the first filter element, and an annular groove with a top opening for the first filter element to pass through is arranged between the first support element and the support ring element.

[0009] The present invention is further configured as follows: the first support member includes an outer ring and an inner ring arranged concentrically, a plurality of first connecting rods distributed circumferentially are fixedly connected between the outer ring and the inner ring, and a plurality of water-permeable grooves for supplying water to pass over the first support member are arranged between two adjacent first connecting rods and the inner ring and the outer ring.

[0010] The present invention is further configured as follows: a sliding clearance groove is provided on the first connecting rod close to the auxiliary filter part side, a sealing plate which can slide vertically is provided in the sliding clearance groove, the sealing plate can block a number of filter holes facing it, the bottom of the support ring is fixedly connected to a water storage tank body with an open top, the bottom of the sealing plate is fixedly connected to a number of symmetrically arranged second connecting rods, the bottom of the second connecting rod is fixedly connected to an internal hollow floating part, the bottom of the floating part is fixedly connected to a guide rod, a guide hole for the guide rod to penetrate and slide is provided on the inner bottom surface of the water storage tank body, the cross-sectional shape of the guide rod and the guide hole in the horizontal direction are both set to be square, and a number of leakage holes are penetrated on the inner bottom surface of the water storage tank body.

[0011] The present invention is further configured as follows: an elastic deformation plate whose end surface is consistent with the area of ​​its top surface is fixedly connected to the top surface of the sealing plate, the end surface area of ​​the sealing plate is smaller than the cross-sectional area of ​​the sliding clearance groove, and the opening area of ​​the water storage tank body is consistent with the cross-sectional area of ​​the sliding clearance groove.

[0012] The present invention is further configured as follows: the auxiliary filter portion includes a transition trough body with a top opening and buried on the inner side of the ground, the transition trough body near the bottom side is connected with a water supply pipe that is interconnected with the inner side of the vertical pipe, the top opening of the transition trough body is covered with a second filter element, the transition trough body is provided with a third filter element with a cross-sectional area consistent with the bottom area of ​​the transition trough body, the second filter element is provided with a plurality of first long grooves with an array direction consistent with the water flow direction, the third filter element is provided with a plurality of second long grooves with an array direction perpendicular to the array direction of the first long grooves, the length direction of the second long grooves is perpendicular to the length direction of the first long grooves, the third filter element is recessed upward to form a transition cavity, the third filter element is provided with a water flow groove for connecting the transition cavity and the water supply pipe, the first filter element is fixedly connected with a rotating tube with an outer wall that fits the inner wall of the inner ring, the bottom of the rotating tube is fixedly connected with a plurality of array-distributed shifting blades, and the water flow flowing out of the water supply pipe is used to drive the shifting blades to rotate.

[0013] The present invention is further configured such that: the top surface of the first filter element and the top surface of the second filter element are both flush with the ground around them.

[0014] In summary, the present invention has the following beneficial effects:

[0015] An auxiliary filter part with a top opening and a water outlet interconnected with the vertical pipe is provided on the water flow path on one side. The water flowing into the auxiliary filter part will flow into the vertical pipe and the mesh pipe at its water outlet. The auxiliary filter part is arranged on the water flow path, so that the auxiliary filter part can realize stable filtration of the water before it flows to the vertical pipe position on one side. The auxiliary filter part can also realize stable collection and temporary storage of fallen leaves while filtering, thereby reducing the fallen leaves and the like being driven to the pipe mouth position of the vertical pipe by the water flow, reducing the amount of fallen leaves and the like docking at the filter cover joint, reducing the influence of the accumulation of fallen leaves and the like on the process of rainwater passing through the filter cover joint and entering the vertical pipe, thereby making the overall anti-blocking performance of the structure better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 The cross-sectional view of the present invention Figure 1 ;

[0018] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0019] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0020] Figure 5 The cross-sectional view of the present invention Figure 2 ;

[0021] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0022] Figure 7 An exploded view of the present invention;

[0023] Figure 8 for Figure 7 Enlarged view of point D in the middle.

[0024] In the figure: 1. vertical pipe; 2. first water inlet area; 3. second water inlet area; 4. first filter element; 5. first support element; 6. support ring element; 7. filter hole; 8. ring groove; 9. outer ring; 10. inner ring; 11. first connecting rod; 12. water-permeable groove; 13. sliding clearance groove; 14. blocking plate; 15. water storage tank body; 16. second connecting rod; 17. floating element; 18. guide rod; 19. guide hole; 20. leakage hole; 21. elastic deformation plate; 22. transition tank body; 23. water supply pipe; 24. second filter element; 25. third filter element; 26. first long groove; 27. second long groove; 28. transition chamber; 29. ​​water trough; 30. rotating tube; 31. moving blade. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] The anti-blocking municipal engineering drainage network water inlet, such as Figure 1 and Figure 2 As shown, it includes a vertical pipe 1 for interconnecting with the pipe network. Rainwater flowing up from the ground will enter the vertical pipe 1 under the action of its own gravity. Under the action of the drainage of the vertical pipe 1, the rainwater will be guided by the vertical pipe 1 to flow into the pipe network, so that the pipe network can achieve stable collection and drainage of rainwater. A filtering cover for covering the pipe mouth of the vertical pipe 1 is provided at the pipe mouth of the vertical pipe 1. The provided filtering cover can realize stable covering of the top opening of the vertical pipe 1 on the one hand, and can realize stable filtering and separation of leaves and rainwater on the other hand, and reduce the amount of fallen leaves and the like falling into the vertical pipe 1 and the network pipe. A top opening and a water outlet are provided on the water flow path on one side. The auxiliary filter part is interconnected with the vertical pipe 1, and the water flowing into the auxiliary filter part will flow into the vertical pipe 1 and the mesh pipe at its outlet. The auxiliary filter part is set on the water flow path, so that the auxiliary filter part can realize stable filtration of water before it flows to the vertical pipe 1 on one side. The auxiliary filter part can also realize stable collection and temporary storage of fallen leaves while filtering, thereby reducing the fallen leaves and the like being driven to the pipe mouth of the vertical pipe 1 by the water flow, reducing the amount of fallen leaves and the like accumulated at the filter cover, and reducing the influence of the accumulation of fallen leaves and the like on the process of rainwater passing through the filter cover and entering the vertical pipe 1, so that the overall anti-blocking performance of the structure is better.

[0027] like Figure 1 and Figure 2As shown, the filter cover includes a first water inlet area 2 and a second water inlet area 3. The opening of the first water inlet area 2 is always open, and the second water inlet area 3 is located on a side close to the auxiliary filter part. The degree of opening of the second water inlet area 3 is inversely proportional to the amount of water passing through the first water inlet area 2 and the second water inlet area 3 per unit time. When the precipitation is large, the water entering the vertical pipe 1 will drive the structure inside the filter cover to block the opening of the second water inlet area 3 for closing, so that water cannot enter the vertical pipe 1 through the opening of the second water inlet area 3, thereby reducing the degree to which the flowing water pushes the fallen leaves to fit the second water inlet area 3, so that the flowing water can better drive the fallen leaves above the second water inlet area 3 to flow toward the auxiliary filter part and be collected by the auxiliary filter part when flowing through, thereby reducing the blockage of the filter cover due to the accumulation of fallen leaves. When the precipitation is small, the opening of the second water inlet area 3 will be open, so that water can flow into the filter cover with the help of the opening of the second water inlet area 3, and then pass through the filter cover and enter the vertical pipe 1.

[0028] like Figure 2 and Figure 3 As shown, the filter cover portion includes a first filter element 4, a first support element 5 and a support ring element 6 which are arranged in sequence from top to bottom. The cross-sectional shape of the first filter element 4 is set to be C-shaped, and a number of filter holes 7 are evenly distributed on the end surface of the first filter element 4. A ring groove 8 with a top opening and for the first filter element 4 to penetrate is provided between the first support element 5 and the support ring element 6. With the help of the set ring groove 8, the first filter element 4 can be stably placed and limited, ensuring that the position of the first filter element 4 and the function it can produce are more stable.

[0029] like Figure 7 and Figure 8 As shown, the first support member 5 includes an outer ring 9 and an inner ring 10 which are arranged concentrically, and a plurality of first connecting rods 11 which are circumferentially distributed are fixedly connected between the outer ring 9 and the inner ring 10 by welding. With the help of the arranged first connecting rods 11, stable limiting of the positions of the outer ring 9 and the inner ring 10 can be achieved, ensuring that the outer ring 9 and the inner ring 10 are in a stable position and achieve their stable functions. A plurality of water-permeable grooves 12 for supplying water to pass over the first support member 5 are arranged between two adjacent first connecting rods 11 and the inner ring 10 and the outer ring 9. The arranged water-permeable grooves 12 are used to supply rainwater to stably pass over the first support member 5, so that water can stably pass over the filter cover and flow into the vertical pipe 1.

[0030] like Figure 2-Figure 4As shown, a sliding yielding groove 13 is provided on the first connecting rod 11 near the side of the auxiliary filter part, and a sealing plate 14 that can slide vertically is provided in the sliding yielding groove 13. The sealing plate 14 can block a number of filter holes 7 facing it. The sliding yielding groove 13 is used to provide a stable yielding effect for the sliding process of the sealing plate 14, so that the sealing function of the sealing plate 14 can be adjusted. When the sealing plate 14 and the first filter element 4 are in contact with each other, the sealing plate 14 will achieve stable blocking of the filter holes 7 facing it, so that the flowing water will not enter the vertical pipe 1 along the blocked filter holes 7, reducing the degree to which the water flow pushes the fallen leaves to fit the top surface of the first filter element 4, and then in the process of the water flow flowing toward the auxiliary filter part, the fallen leaves at the position of the blocked filter holes 7 can be driven to stably flow toward the auxiliary filter part and be stored in the auxiliary filter part, reducing the amount of fallen leaves accumulated above the first filter element 4 and the degree of blocking of the first filter element 4.

[0031] like Figure 2-Figure 4 As shown, when the blocking plate 14 slides away from the first filter element 4, the filter hole 7 blocked by the blocking plate 14 will open, so that the water flow can pass through the first filter element 4 and enter the vertical pipe 1 with the help of the opened filter hole 7, the bottom of the support ring 6 is fixedly connected to the water storage tank body 15 with the top opening by welding, the bottom of the blocking plate 14 is fixedly connected to a plurality of symmetrically arranged second connecting rods 16 by welding, the bottom of the second connecting rods 16 is fixedly connected to an internal hollow floating member 17 by welding, the bottom of the floating member 17 is fixedly connected to a guide rod 18 by welding, the bottom of the guide rod 18 is fixedly connected to a limiting block by welding, and a guide hole 19 is provided on the inner bottom surface of the water storage tank body 15 for the guide rod 18 to penetrate and slide, and the sliding of the guide rod 18 in the guide hole 19 can achieve stable guidance and limiting effect on the sliding process of the floating member 17, so that the floating member 1 The sliding process is more stable and smooth, thereby realizing stable guidance and limiting of the sliding process of the blocking plate 14, making the blocking and switching process of the blocking plate 14 more stable. The cross-sectional shapes of the guide rod 18 and the guide hole 19 in the horizontal direction are both set to be square. This setting enables the guide hole 19 to realize stable limiting of the rotation process of the guide rod 18, so that the guide rod 18 can only slide in the guide hole 19 and cannot rotate in the guide hole 19, making the sliding and guiding functions of the guide rod 18 more stable. A plurality of leakage holes 20 are opened through the inner bottom surface of the water storage tank body 15. With the help of the set leakage holes 20, when the amount of water entering the water storage tank body 15 per unit time is less than the amount of water discharged by the plurality of leakage holes 20, the water level in the water storage tank body 15 will gradually decrease, so that the floating member 17 will move downward and drive the blocking plate 14 to move downward, so that the blocking function of the blocking plate 14 will gradually be lost.

[0032] like Figure 2-Figure 4As shown, an elastic deformation plate 21 with an end surface having the same area as its top surface is fixedly connected to the top surface of the blocking plate 14 by means of adhesive bonding, and the elastic deformation plate 21 is set to EPDM rubber, and the good elasticity and weather resistance of this type of material are utilized to ensure that the elastic deformation plate 21 has good and stable elastic deformation performance and weather resistance. Then, when the blocking plate 14 blocks the filter hole 7 facing it, the elastic deformation plate 21 can be squeezed and deformed, and the elastic force generated by the elastic deformation of the elastic deformation plate 21 makes the elastic deformation plate 21 better fit the first filter element 4, so that The sealing and plugging performance of the blocking plate 14 is more stable, the end face area of ​​the blocking plate 14 is smaller than the cross-sectional area of ​​the sliding give-way groove 13, and the opening area of ​​the water storage tank body 15 is consistent with the cross-sectional area of ​​the sliding give-way groove 13. This arrangement ensures that after the blocking plate 14 blocks the corresponding filter holes 7, there are still enough filter holes 7 facing the water storage tank body 15, so that part of the rainwater entering the vertical pipe 1 will enter the water storage tank body 15, so that the water storage process can be stably realized in the water storage tank body 15, and then the height of the floating member 17 can be stably adjusted to achieve stable adjustment of the blocking function of the blocking plate 14.

[0033] like Figure 2-Figure 6As shown, the auxiliary filtering part includes a transition trough body 22 with a top opening and buried inside the ground. The transition trough body 22 near the bottom is connected with a water supply pipe 23 that is interconnected with the inner side of the vertical pipe 1. Under the action of the water supply pipe 23, the water entering the transition trough body 22 will be stably sent into the vertical pipe 1 along the water supply pipe 23. The top opening of the transition trough body 22 is covered with a second filter element 24. The transition trough body 22 is provided with a third filter element 25 with a cross-sectional area consistent with the bottom area of ​​the transition trough body 22. The second filter element 24 is provided with a plurality of first long grooves 26 with an array direction consistent with the water flow direction. The second filter element 24 includes a support frame and a plurality of cylindrical rods distributed in an array in the support frame. The first long grooves 26 are located adjacent to each other. Between the two cylindrical rods and the cylindrical rods and the supporting frame, the fallen leaves moving with the flowing water can enter the transition trough body 22 along the first long groove 26, and can be stably collected in the transition trough body 22. The third filter element 25 is provided with a plurality of second long grooves 27 whose array direction is perpendicular to the array direction of the first long grooves 26. This arrangement ensures that the third filter element 25 can achieve stable filtration and separation of water and fallen leaves falling into the transition trough body 22, so that the fallen leaves can be stably collected in the transition trough body 22, reduce the amount of fallen leaves accumulated on the filter cover, and reduce the blockage of the opening of the vertical pipe 1 due to the accumulation of fallen leaves. The length direction of the second long groove 27 is perpendicular to the length direction of the first long groove 26. The filter element 25 is recessed upward to form a transition chamber 28, and a water groove 29 for connecting the transition chamber 28 and the water supply pipe 23 is provided on the third filter element 25. The water filtered by the third filter element 25 will enter the water supply pipe 23 with the help of the transition chamber 28 and the water groove 29, and enter the vertical pipe 1 through the water supply pipe 23. The first filter element 4 is fixedly connected to a rotating tube 30 whose outer wall and the inner wall of the inner ring 10 are in contact with each other by welding. The bottom of the rotating tube 30 is fixedly connected to a plurality of shifting blades 31 distributed in an array by welding. The water flowing out of the water supply pipe 23 is used to drive the shifting blades 31 to rotate. The water outlet of the water supply pipe 23 faces the shifting blades 31 and the central axis of the water supply pipe 23 deviates from the rotating tube 3 0, the water entering the vertical pipe 1 from the water supply pipe 23 will impact the moving blade 31, and then apply a thrust to the moving blade 31, and drive the rotating tube 30 to rotate by applying a thrust to the moving blade 31. After the rotating tube 30 rotates, it will drive the first filter element 4 to rotate. After the first filter element 4 rotates, it will drive different areas of it to face the blocking plate 14, so that the blocking plate 14 can block the first filter element 4 in different areas. During the rotation process, the first filter element 4 will also drive the filter holes 7 above it to be blocked in turn, so that the fallen leaves accumulated on the top of the first filter element 4 can be better sent into the auxiliary filter part by the flowing water, reducing the influence of the accumulated fallen leaves on the process of water entering the vertical pipe 1.

[0034] like Figure 1 and Figure 2 As shown, the top surface of the first filter element 4 and the top surface of the second filter element 24 are both flush with the ground around them. This arrangement enables the top surfaces of the first filter element 4 and the second filter element 24 to be at the same height, thereby reducing the effect of the height difference between the first filter element 4 and the second filter element 24 on the process of fallen leaves entering the auxiliary filter portion with the water flow, so that the fallen leaves can be better collected in the auxiliary filter portion, reducing the accumulation of fallen leaves at the filter cover to affect the water flow entering the vertical pipe 1.

[0035] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A water inlet of a drainage pipe network for anti-blocking municipal engineering, comprising a vertical pipe (1) for interconnecting with the pipe network, characterized in that: The vertical pipe (1) has a filter cover portion at its pipe opening for covering the pipe opening, and an auxiliary filter portion with a top opening and a water outlet communicating with the vertical pipe (1) is provided on a water flow path on one side.

2. The anti-blocking type municipal engineering drainage pipe network water inlet according to claim 1 is characterized by: The filter cover comprises a first water inlet area (2) and a second water inlet area (3), the opening of the first water inlet area (2) is always open, the second water inlet area (3) is located on a side close to the auxiliary filter part, and the degree of opening of the second water inlet area (3) is inversely proportional to the amount of water passing through the first water inlet area (2) and the second water inlet area (3) per unit time.

3. The anti-blocking type municipal engineering drainage pipe network water inlet according to claim 2 is characterized by: The filter cover comprises a first filter element (4), a first support element (5) and a support ring element (6) which are arranged in sequence from top to bottom. The cross-sectional shape of the first filter element (4) is arranged in a C-shape. A plurality of filter holes (7) are evenly distributed on the end surface of the first filter element (4). An annular groove (8) with a top opening and for the first filter element (4) to penetrate is arranged between the first support element (5) and the support ring element (6).

4. The anti-blocking type water inlet for municipal engineering drainage network according to claim 3, characterized in that: The first support member (5) comprises an outer ring (9) and an inner ring (10) which are arranged concentrically, a plurality of first connecting rods (11) which are circumferentially distributed and fixedly connected between the outer ring (9) and the inner ring (10), and a plurality of water-permeable grooves (12) for supplying water to pass over the first support member (5) are arranged between two adjacent first connecting rods (11) and the inner ring (10) and the outer ring (9).

5. The anti-blocking type water inlet for municipal engineering drainage pipe network according to claim 4, characterized in that: A sliding groove (13) is provided on the first connecting rod (11) near the auxiliary filter part, and a blocking plate (14) that can slide vertically is provided in the sliding groove (13). The blocking plate (14) can block a plurality of filter holes (7) facing the supporting ring (6). A water storage tank body (15) with an open top is fixedly connected to the bottom of the supporting ring (6). A plurality of second connecting rods (16) that are symmetrically arranged are fixedly connected to the bottom of the blocking plate (14). The bottom of the connecting rod (16) is fixedly connected to a floating member (17) with an internal hollow interior, and the bottom of the floating member (17) is fixedly connected to a guide rod (18). A guide hole (19) is provided on the inner bottom surface of the water storage tank body (15) for the guide rod (18) to penetrate and slide. The cross-sectional shapes of the guide rod (18) and the guide hole (19) along the horizontal direction are both set to be square. A plurality of water leakage holes (20) are provided through the inner bottom surface of the water storage tank body (15).

6. The anti-blocking type water inlet for municipal engineering drainage pipe network according to claim 5, characterized in that: An elastic deformation plate (21) having an end surface consistent with the area of ​​its top surface is fixedly connected to the top surface of the blocking plate (14); the end surface area of ​​the blocking plate (14) is smaller than the cross-sectional area of ​​the sliding clearance groove (13); and the opening area of ​​the water storage tank body (15) is consistent with the cross-sectional area of ​​the sliding clearance groove (13).

7. The anti-blocking municipal engineering drainage pipe network water inlet according to claim 4, characterized in that: The auxiliary filtering part comprises a transition trough body (22) with an opening at the top and buried inside the ground; a water supply pipe (23) which is connected to the inner side of the vertical pipe (1) is connected to the transition trough body (22) near the bottom; a second filter element (24) is covered at the top opening of the transition trough body (22); a third filter element (25) having a cross-sectional area consistent with the inner bottom area of ​​the transition trough body (22) is provided in the transition trough body (22); a plurality of first long grooves (26) whose array direction is consistent with the water flow direction are provided on the second filter element (24); a plurality of first long grooves (26) whose array direction is perpendicular to the array direction of the first long grooves (26) are provided on the third filter element (25); The third filter element (25) is provided with a second long groove (27), the length direction of the second long groove (27) is perpendicular to the length direction of the first long groove (26), the third filter element (25) is recessed upward to form a transition cavity (28), the third filter element (25) is provided with a water passage (29) for connecting the transition cavity (28) and the water supply pipe (23), the first filter element (4) is fixedly connected with a rotating tube (30) whose outer wall is mutually fitted with the inner wall of the inner ring (10), the bottom of the rotating tube (30) is fixedly connected with a plurality of shifting blades (31) distributed in an array, and the water flowing out of the water supply pipe (23) is used to drive the shifting blades (31) to rotate.

8. The anti-blocking type water inlet for municipal engineering drainage pipe network according to claim 7, characterized in that: The top surface of the first filter element (4) and the top surface of the second filter element (24) are both flush with the ground around them.

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