A drainage manhole cover with rainwater filtering and self-cleaning functions

Abstract

The present invention discloses a drainage manhole cover with rainwater filtering and self-cleaning functions, including a cleaning device. The cleaning device is arranged on the upper surface of the filter screen and can, when rotating, respectively gather impurities and brush the filter screen below. The cleaning device includes a cleaning rod. Multiple groups of fine bristles are arranged on the contact surface between the cleaning rod and the filter screen. The cleaning rod is integrally arranged as an arc surface. A runner is fixedly connected to the end of the cleaning rod. The drainage manhole cover with rainwater filtering and self-cleaning functions is provided with a cleaning device. When a pedestrian or a small vehicle presses the manhole cover, the manhole cover will press the spring on the lower surface and thus move downward. The force of the downward movement of the manhole cover will drive the screw rod to rotate through transmission. When the screw rod rotates clockwise, it will drive the cleaning rod to rotate clockwise, thereby gradually pushing the impurities on the surface of the filter screen towards the opening on the surface of the collection bin, thus completing the cleaning and collection of the impurities.

Description

Technical Field

[0001] The present invention relates to the technical field of municipal engineering, and particularly relates to a drainage manhole cover with rainwater filtering and self-cleaning functions. Background Art

[0002] Municipal engineering refers to the construction project of municipal infrastructure, which is an essential material basis for the development and survival of cities. Municipal engineering includes various projects such as greening and drainage. Among them, the drainage project requires the use of drainage pipe networks to discharge sewage.

[0003] In the drainage project of municipal engineering, the drainage manhole cover provides convenience for the development of the water supply and drainage project in the city. While the conventional drainage manhole cover is draining, some impurities and sundries will also be discharged into the rainwater pipe network along with the water flow, which will cause pipe blockage and affect the normal drainage process of the pipe network. In view of this, we propose a drainage manhole cover with rainwater filtering and self-cleaning functions. Summary of the Invention

[0004] The main purpose of the present invention is to provide a drainage manhole cover with rainwater filtering and self-cleaning functions, which can gather impurities and brush the filter screen below respectively when rotating.

[0005] To achieve the above object, a drainage manhole cover with rainwater filtering and self-cleaning functions proposed by the present invention includes a cleaning device. The cleaning device is arranged on the upper surface of the filter screen and can gather impurities and brush the filter screen below respectively when rotating. The cleaning device includes:

[0006] A cleaning rod, multiple groups of fine bristles are arranged on the contact surface between the cleaning rod and the filter screen. The whole cleaning rod is arranged as an arc surface, and a runner is fixedly connected to the end of the cleaning rod.

[0007] A push plate, a connecting rod is hinged to the outer arc surface of the push plate, and the end of the connecting rod away from the push plate is slidably connected to the cleaning rod.

[0008] Preferably, a groove with the same shape as the connecting rod is opened at the inner arc surface of the cleaning rod. The whole push plate has the same radian as the cleaning rod. The end of the push plate is hinged to the cleaning rod, and a collecting device is arranged at the end of the cleaning rod away from the runner.

[0009] Preferably, the outer surface of the filter is fixedly connected to the well wall, a plurality of support blocks are fixedly connected to the inner arc surface of the well wall, the upper surface of the support block is elastically connected to the well cover via a spring, the inner surface of the well cover is fixedly connected to a threaded block, the inner surface of the threaded block is threadedly connected to a screw, the end of the screw away from the threaded block is fixedly connected to a rotating wheel, a groove is provided at the upper end of the outer surface of the well cover, an anti-tripping device is provided inside the groove, a plurality of penetrating cylindrical water inlet holes are provided on the upper surface of the well cover, and a thread is provided on the inner surface of the threaded block.

[0010] Preferably, the collecting device includes a collecting bin, a side cover plate hinged at the lower end of the side surface of the collecting bin, an extrusion block fixedly connected to the lower end surface of the hinge shaft of the side cover plate, a drain plate hinged at the lower surface of the collecting bin, an arc block 1 fixedly connected to the end of the drain plate, an end of the drain plate away from the arc block 1 fixedly connected to a perforated plate via a pull rope, the end of the perforated plate is hinged to the collecting bin, an extrusion frame is hinged on the inner surface of the collecting bin, and the hinge shaft of the extrusion frame is connected to the hinge shaft of the drain board via a transmission belt.

[0011] Preferably, a groove is provided on the upper end of the front surface of the collecting bin, the interior of the collecting bin is hollow, one end of a torsion spring is fixedly connected to the hinge axis of the side cover plate, the end of the torsion spring away from the side cover plate is fixedly connected to the collecting bin, a plurality of groups of through holes are provided on the lower surface of the collecting bin, and a plurality of groups of through holes corresponding to the holes at the lower end of the collecting bin are provided on the inner surface of the orifice plate.

[0012] Preferably, an impurity separation device is provided at the lower end of the inner surface of the well wall, and the impurity separation device includes a liquid collecting plate, and the end of the liquid collecting plate away from the well wall is fixedly connected to an extrusion arc plate, and the arc surface of the extrusion arc plate is fixedly connected to an arc-shaped protrusion, and the liquid collecting plate and the liquid collecting plate are mirror-symmetrical to each other, and baffles are fixedly connected to both sides of the solid collection plate, and the upper surface of the baffle is fixedly connected to an arc-shaped protrusion.

[0013] Preferably, the anti-tripping device comprises an arc-shaped block 2, a manhole cover is hingedly connected to the end of the arc-shaped block 2, a drainage groove interconnected with each other is provided at the junction of the manhole cover and the arc-shaped block, a brush plate is fixedly connected to the arc-shaped block 2 near the drainage groove, an arc-shaped plate is fixedly connected between the two walls of the groove surface of the manhole cover, and a luminous light strip is fixedly connected between the two walls of the groove surface of the manhole cover.

[0014] Preferably, a torsion spring is fixedly connected to the hinge between the arc block 2 and the manhole cover, and the other end of the torsion spring away from the arc block 2 is fixedly connected to the manhole cover. A rectangular groove is opened on the inner arc surface of the arc block 2, and the luminous light strip is located on the inner side of the arc plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The drainage manhole cover with rainwater filtering and self-cleaning functions is provided with a cleaning device. When pedestrians or small vehicles squeeze the manhole cover, the manhole cover will squeeze the spring on the lower surface and move downward. The force of the manhole cover moving downward will drive the screw rod to rotate through the transmission. When the screw rod rotates clockwise, it will drive the cleaning rod to rotate clockwise, thereby gradually pushing the impurities on the surface of the filter screen to the opening on the surface of the collection bin, thereby completing the cleaning and collection of the impurities. When the screw rod rotates in the opposite direction, the screw rod will drive the cleaning rod to rotate counterclockwise through the rotating wheel. At this time, due to the centrifugal force generated by the rotation, the push plate will gradually break away from the contact with the cleaning rod, and the corresponding connecting rod will also be pulled out, thereby gathering the impurities on the upper surface of the filter screen.

[0017] (2) The drainage manhole cover with rainwater filtering and self-cleaning functions is provided with an impurity separation device. Since the impurity separation device is provided with a solid collection plate and a liquid collection plate, and the tops of the solid collection plates can be squeezed with different positions of the collection bin, respectively, the drainage plate or the side cover plate can be opened at the corresponding position, and different types of impurities can be classified and transported.

[0018] (3) The drainage manhole cover with rainwater filtering and self-cleaning functions is provided with a collection device. When the cleaning rod rotates clockwise, it drives the impurities on the filter screen to continuously move into the collection bin, so that when it is squeezed above the liquid collection plate, the arc block drives the drainage plate to rotate, thereby exposing the drainage holes on the lower surface of the collection bin for drainage. At the same time, when the drainage plate rotates, it also drives the hole plate and the squeezing frame to rotate through the pull rope and the belt, thereby squeezing the solid impurities inside the collection bin.

[0019] (4) The drainage manhole cover with rainwater filtering and self-cleaning functions is provided with an anti-tripping device. The luminous light strip therein absorbs light energy during the day and emits light at night due to the fluorescent paint on its surface, thereby preventing pedestrians from being tripped by the truncated cone-shaped raised manhole cover when walking at night. The arc plate is made of a transparent acrylic plate material and therefore will not affect the lighting of the luminous light strip. The arc block 2 on its surface will also brush away impurities on the surface of the arc plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the cleaning device structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the impurity separation device structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the collection device structure of the present invention;

[0026] Figure 6 This is a schematic sectional view of the collection device of the present invention;

[0027] Figure 7 This is a schematic diagram of the anti-tripping device structure of the present invention.

[0028] In the figure: 1, manhole cover; 2, cleaning device; 3, impurity separation device; 4, collection device; 5, anti-tripping device; 6, well wall; 7, support block; 8, lead screw; 9, threaded block; 10, filter screen; 201, cleaning rod; 202, connecting rod; 203, push plate; 204, runner; 301, solid collection plate; 302, extrusion arc plate; 303, baffle; 304, liquid collection plate; 401, collection bin; 402, orifice plate; 403, drainage plate; 404, first arc-shaped block; 405, extrusion frame; 406, side cover plate; 407, extrusion block; 501, brush plate; 502, arc-shaped block; 503, arc-shaped plate; 504, night light strip. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, the descriptions involving "first", "second", etc. in the present invention are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] Please refer to Figure 1-7 , the present invention provides a technical solution: a drainage manhole cover with rainwater filtering and self-cleaning functions, including a cleaning device 2. The cleaning device 2 is arranged on the upper surface of the filter screen 10 and can respectively gather impurities and brush the lower filter screen 10 when rotating. The outer surface of the filter screen 10 is fixedly connected to the well wall 6. The well wall 6 in this device can provide support for the upper manhole cover 1 and the support blocks 7. Multiple support blocks 7 are fixedly connected to the inner arc surface of the well wall 6. The upper surface of the support block 7 is elastically connected to the manhole cover 1 through a spring. The inner surface of the manhole cover 1 is fixedly connected to a threaded block 9. The inner surface of the threaded block 9 is threadedly connected to a lead screw 8. Therefore, when the threaded block 9 moves up and down, it can drive the lead screw 8 to rotate synchronously. One end of the lead screw 8 away from the threaded block 9 is fixedly connected to a runner 204. Through this runner 204, the rotating force of the lead screw 8 can be transmitted to the cleaning rod 201. A groove is opened at the upper end of the outer surface of the manhole cover 1, and an anti-tripping device 5 is arranged inside the groove, so as to prevent pedestrians from being tripped by the protruding manhole cover 1 when walking at night. Numerous through cylindrical water inlet holes are opened on the upper surface of the manhole cover 1, so that the external rainwater can enter the inside of this device through the water inlet holes. The inner surface of the threaded block 9 is provided with threads.

[0033] In the embodiment of the present invention, the cleaning device 2 includes:

[0034] A cleaning rod 201, and multiple groups of fine bristles are arranged on the contact surface between the cleaning rod 201 and the filter screen 10. Therefore, when the cleaning rod 201 rotates, it can brush the lower filter screen 10. The cleaning rod 201 is integrally arranged as an arc surface, and the end of the cleaning rod 201 is fixedly connected to the runner 204. Therefore, the rotation of the lead screw 8 can be transmitted to the cleaning rod 201;

[0035] A push plate 203, the outer arc surface of the push plate 203 is hinged to a connecting rod 202, so as to prevent impurities from getting stuck between the cleaning rod 201 and the push plate 203 and affecting the normal use of this device. One end of the connecting rod 202 away from the push plate 203 is slidably connected to the cleaning rod 201.

[0036] Specifically, a groove having the same shape as that of the connecting rod 202 is provided on the inner arc surface of the cleaning rod 201, so that the connecting rod 202 can be stored inside the cleaning rod 201 when the cleaning rod 201 contacts the push plate 203, and the push plate 203 has the same arc as that of the cleaning rod 201 as a whole, so that when the cleaning rod 201 rotates clockwise, the push plate 203 can be close to the arc surface of the cleaning rod 201, and the end of the push plate 203 is hinged to the cleaning rod 201, and the end of the cleaning rod 201 away from the rotating wheel 204 is provided with a collecting device 4. The drainage manhole cover with rainwater filtering and self-cleaning functions is provided with a cleaning device 2. When pedestrians or small vehicles squeeze the manhole cover 1, The manhole cover 1 will squeeze the spring on the lower surface and move downward, and the force of the manhole cover 1 moving downward will drive the screw rod 8 to rotate through the transmission. When the screw rod 8 rotates clockwise, it will drive the cleaning rod 201 to rotate clockwise, thereby gradually pushing the impurities on the surface of the filter 10 to the opening on the surface of the collection bin 401, thereby completing the cleaning and collection of impurities. When the screw rod 8 rotates in the opposite direction, the screw rod 8 will drive the cleaning rod 201 to rotate counterclockwise through the rotating wheel 204. At this time, due to the centrifugal force generated by the rotation, the push plate 203 will gradually break away from the contact with the cleaning rod 201, and the corresponding connecting rod 202 will also be pulled out, thereby gathering the impurities on the upper surface of the filter 10.

[0037] In the embodiment of the present invention, the collection device 4 includes a collection bin 401. The lower end of the side surface of the collection bin 401 is hinged to a side cover plate 406. The side cover plate 406 can seal the opening on the side of the collection bin 401 to prevent solid impurities from falling. The lower end surface of the hinge shaft of the side cover plate 406 is fixedly connected to a pressing block 407. The pressing block 407 can be pressed against the arc-shaped protrusion above the baffle 303. The lower surface of the collection bin 401 is hinged to a drainage plate 403. The drainage plate 403 can seal the through holes on the lower surface of the collection bin 401 to prevent the water inside the collection bin 401 from spilling. The end of the drainage plate 403 is fixedly connected to an arc-shaped block 404. The arc-shaped block 404 can prevent rigid collision between the drainage plate 403 and the extrusion arc plate 302. One end of the drainage plate 403 away from the arc-shaped block 404 is fixedly connected to a hole plate 402 through a pull rope. The end of the hole plate 402 is hinged to the collection bin 401. The inner surface of the collection bin 401 is hinged to a pressing frame 405. By pressing between the pressing frame 405 and the hole plate 402, the water inside the solid impurities in the collection bin 401 can be squeezed out, thereby reducing the waste of rainwater. The hinge shaft of the pressing frame 405 is connected to the hinge shaft of the drainage plate 403 through a transmission belt. Therefore, when the drainage plate 403 rotates, it can drive the pressing frame 405 to rotate synchronously. A groove is provided at the upper end of the front surface of the collection bin 401. The inside of the collection bin 401 is hollow, so as to store the unclassified impurities. One end of the hinge shaft of the side cover plate 406 is fixedly connected to one end of a torsion spring. The end of the torsion spring away from the side cover plate 406 is fixedly connected to the collection bin 401. Therefore, the side cover plate 406 can be reset by the torsion spring. A plurality of groups of through holes are provided on the lower surface of the collection bin 401, so as to lead the rainwater inside downward. A plurality of groups of through holes corresponding to the holes at the lower end of the collection bin 401 are provided on the inner surface of the hole plate 402. The drainage manhole cover with the functions of rainwater filtration and self-cleaning is provided with the collection device 4. When the cleaning rod 201 rotates clockwise, it will drive the impurities on the filter screen 10 to continuously move towards the inside of the collection bin 401. When it is pressed above the liquid collection plate 301, the arc-shaped block 404 will drive the drainage plate 403 to rotate, so that the drainage holes on the lower surface of the collection bin 401 are exposed for drainage. At the same time, when the drainage plate 403 rotates, it will also drive the hole plate 402 and the pressing frame 405 to rotate through the pull rope and the belt, so as to squeeze the water from the solid impurities inside the collection bin 401.

[0038] In an embodiment of the present invention, an impurity separation device 3 is provided at the lower end of the inner surface of the well wall 6. The impurity separation device 3 includes a liquid collection plate 301. One end of the liquid collection plate 301 away from the well wall 6 is fixedly connected to an extrusion arc plate 302. The ends of the liquid collection plate 301 and the solid collection plate 304 are respectively communicated with an external impurity treatment device. Therefore, the impurities inside the device can have a self-cleaning effect. An arc-shaped protrusion is fixedly connected to the arc surface of the extrusion arc plate 302. The liquid collection plate 301 and the solid collection plate 304 are arranged in an array with the center point of the well wall 6 as the center of symmetry. Both sides of the solid collection plate 304 are fixedly connected to a baffle 303, and an arc-shaped protrusion is fixedly connected to the upper surface of the baffle 303. The drainage manhole cover with the functions of rainwater filtration and self-cleaning is provided with an impurity separation device 3. Since the impurity separation device 3 is respectively provided with a solid collection plate 304 and a liquid collection plate 301, and they can be extruded at different positions of the collection bin 401 above them respectively, the drainage plate 403 or the side cover plate 406 can be opened at the corresponding positions, and then different types of impurities can be classified and transported.

[0039] In an embodiment of the present invention, the anti-tripping device 5 includes an arc-shaped block two 502. The end of the arc-shaped block two 502 is hinged to the manhole cover 1, and numerous fine bristles are provided on the contact surface between the arc-shaped block two 502 and the arc-shaped plate 503. Therefore, when the arc-shaped block two 502 rotates, it can brush the stains on the surface of the arc-shaped plate 503. Drainage grooves communicating with each other are provided at the junction of the manhole cover 1 and the arc-shaped block. The brush plate 501 is fixedly connected to the arc-shaped block two 502 near the drainage groove. The arc-shaped plate 503 is fixedly connected between the two walls of the groove surface of the manhole cover 1. Since the overall position of the arc-shaped plate 503 is lower than the inclined surface of the manhole cover 1, when the manhole cover 1 is impacted downward, the impact force will not squeeze the arc-shaped plate 503. The night light strip 504 is fixedly connected between the two walls of the groove surface of the manhole cover 1. A torsion spring is fixedly connected to the hinge between the arc-shaped block two 502 and the manhole cover 1. Therefore, the torsion spring can reset the position of the arc-shaped block two 502. The other end of the torsion spring away from the arc-shaped block two 502 is fixedly connected to the manhole cover 1. A rectangular groove is provided on the inner arc surface of the arc-shaped block two 502. The night light strip 504 is located inside the arc-shaped plate 503. Therefore, rainwater will not directly contact the night light strip 504 to affect its lighting effect. And due to the material of the night light strip 504, it can provide light at night without consuming electric energy. The drainage manhole cover with the functions of rainwater filtration and self-cleaning is provided with an anti-tripping device 5. The night light strip 504 on its surface will absorb light energy during the day and emit light at night due to the fluorescent coating on its surface, thereby preventing pedestrians from being tripped by the manhole cover 1 in the shape of a frustum of a cone at night. And since the arc-shaped plate 503 is made of transparent acrylic plate material itself, it will not affect the lighting of the night light strip 504, and the arc-shaped block two 502 on its surface will also brush the impurities on the surface of the arc-shaped plate 503.

[0040] When working (or in use), the luminous light strip 504 will absorb light energy during the day and emit light at night due to the fluorescent paint on its surface, thereby preventing pedestrians from being tripped by the truncated cone-shaped raised manhole cover 1 when walking at night. The arc plate 503 is made of a transparent acrylic plate material, so it will not affect the lighting of the luminous light strip 504. At the same time, the outer surface of the arc plate 503 is always in direct contact with the air. Therefore, when used for a long time, a lot of debris or stains may adhere to its surface, thereby affecting the lighting effect of the luminous light strip 504. At this time, the arc block 2 502 on the outer surface of the arc plate 503 will block rainwater from top to bottom on rainy days, and temporarily store rainwater through the grooves on its surface, so that the arc block 2 502 on the surface When there is a lot of rain, the gravity of the rainwater can cause rotation. At this time, the fine bristles of the arc block 2 502 close to the end of the arc plate 503 will brush the stains on the surface of the arc plate 503. After the arc plate 503 rotates, the rainwater will flow into the arc plate 503 along the arc block 2 502 and slide down. At the same time, the rainwater remaining on the inner arc surface of the arc block 2 502 will also be guided to the inside of the groove between the arc block 2 502 and the manhole cover 1 due to the rebound of the arc block 2 502, so as to drain the water through the side groove. Since the brush plate 501 and the arc block 2 502 are fixedly connected, the brush plate 501 will also rotate accordingly to brush the side groove, thereby preventing clogging by stains. At the same time, since the manhole cover 1 is configured as a truncated cone, When pedestrians or small vehicles squeeze the manhole cover 1, the manhole cover 1 will squeeze the spring on the lower surface, thereby moving downward. At this time, since the threaded block 9 is fixedly connected to the center of the lower surface of the manhole cover 1, the screw rod 8 will correspondingly produce positive and reverse rotations during the up and down movement of the threaded block 9, thereby providing power for the cleaning device 2. When the screw rod 8 rotates clockwise, it will drive the cleaning rod 201 to rotate clockwise, thereby gradually pushing the impurities on the surface of the filter screen 10 to the opening on the surface of the collection bin 401, thereby completing the cleaning and collection of impurities, and rainwater will flow downward to the filter screen 10 through the through holes on the surface. After the pressure above the manhole cover 1 disappears, the spring will push the manhole cover 1 to rise and reset, and the screw rod 8 will correspondingly produce reverse rotation. At this time, the screw rod 8 will pass through the rotating wheel 204 The cleaning rod 201 is driven to rotate counterclockwise. At this time, due to the centrifugal force generated by the rotation, the push plate 203 will gradually break away from the contact with the cleaning rod 201, and the corresponding connecting rod 202 will also be pulled out, so as to gather the impurities on the upper surface of the filter screen 10, so as to facilitate the subsequent clockwise rotation of the cleaning rod 201 to collect them. The impurities collected in the collecting bin 401 and some unfiltered water will gradually accumulate downward inside the collecting bin 401. When the collecting bin 401 rotates to the liquid collecting plate 301, the arc-shaped protrusion on the extrusion arc plate 302 will squeeze the arc block 1 404 on the drain plate 403 upward. At this time, the arc block 1 404 will drive the drain plate 403 to rotate, so that the drainage holes on the lower surface of the collecting bin 401 are exposed for drainage.Meanwhile, when the drainage board 403 rotates, it will also drive the orifice plate 402 and the extrusion frame 405 to rotate through the pull rope and the belt, so as to perform a water extrusion operation on the solid impurities inside the collection bin 401, and drain the water in the impurities downward onto the liquid collection plate 301. At this time, the collection bin 401 will continue to rotate with the cleaning rod 201. When the collection bin 401 is above the solid collection plate 304, the arc-shaped protrusion on the side cover plate 406 will squeeze the extrusion block 407, so that the extrusion block 407 can drive the side cover plate 406 to rotate. At this time, due to the centrifugal force generated by the rotation of the collection bin 401, the internal solid impurities will fall downward through the opening in the side cover plate 406 onto the solid collection plate 304, thus completing the collection of solid impurities.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drainage manhole cover with rainwater filtering and self-cleaning functions, including a cleaning device (2), characterized in that: The cleaning device (2) is arranged on the upper surface of the filter screen (10), and gathers and brushes the impurities on the filter screen (10) below when rotating. The cleaning device (2) comprises: A cleaning rod (201), wherein a contact surface between the cleaning rod (201) and the filter screen (10) is provided with a plurality of groups of fine bristles, the cleaning rod (201) is configured as a curved surface as a whole, and a rotating wheel (204) is fixedly connected to the end of the cleaning rod (201); A push plate (203), wherein the outer arc surface of the push plate (203) is hinged with a connecting rod (202), and one end of the connecting rod (202) away from the push plate (203) is slidably connected to a cleaning rod (201); The inner arc surface of the cleaning rod (201) is provided with a groove having the same shape as the connecting rod (202); the push plate (203) as a whole has the same arc as the cleaning rod (201); the end of the push plate (203) is hingedly connected to the cleaning rod (201); and a collecting device (4) is provided at one end of the cleaning rod (201) away from the rotating wheel (204); The collecting device (4) comprises a collecting bin (401), a side cover plate (406) is hingedly connected to the lower end of the side surface of the collecting bin (401), an extrusion block (407) is fixedly connected to the lower end surface of the hinge shaft of the side cover plate (406), a drainage plate (403) is hingedly connected to the lower surface of the collecting bin (401), an arc block (404) is fixedly connected to the end of the drainage plate (403), an end of the drainage plate (403) away from the arc block (404) is fixedly connected to a perforated plate (402) via a pull rope, the end of the perforated plate (402) is hingedly connected to the collecting bin (401), an extrusion frame (405) is hingedly connected to the inner surface of the collecting bin (401), and the hinge shaft of the extrusion frame (405) is connected to the hinge shaft of the drainage plate (403) via a transmission belt. A groove is provided at the upper end of the front surface of the collecting bin (401); the interior of the collecting bin (401) is hollow; one end of a torsion spring is fixedly connected to the hinge axis of the side cover plate (406); the end of the torsion spring away from the side cover plate (406) is fixedly connected to the collecting bin (401); a plurality of groups of through holes are provided on the lower surface of the collecting bin (401); and a plurality of groups of through holes corresponding to the holes at the lower end of the collecting bin (401) are provided on the inner surface of the orifice plate (402).

2. The drainage manhole cover with rainwater filtering and self-cleaning functions according to claim 1, characterized in that: The outer surface of the filter screen (10) is fixedly connected to a well wall (6), and a plurality of support blocks (7) are fixedly connected to the inner arc surface of the well wall (6). The upper surface of the support block (7) is elastically connected to the well cover (1) via a spring, and the inner surface of the well cover (1) is fixedly connected to a threaded block (9), and the inner surface of the threaded block (9) is threadedly connected to a screw rod (8), and the end of the screw rod (8) away from the threaded block (9) is fixedly connected to a rotating wheel (204). A groove is provided at the upper end of the outer surface of the well cover (1), and an anti-tripping device (5) is provided inside the groove. A plurality of penetrating cylindrical water inlet holes are provided on the upper surface of the well cover (1), and a thread is provided on the inner surface of the threaded block (9).

3. The drainage manhole cover with rainwater filtering and self-cleaning functions according to claim 2, characterized in that: The lower end of the inner surface of the well wall (6) is provided with an impurity separation device (3). The impurity separation device (3) includes a liquid collection plate (301). One end of the liquid collection plate (301) away from the well wall (6) is fixedly connected with a pressing arc plate (302). An arc-shaped protrusion is fixedly connected to the arc surface of the pressing arc plate (302). The liquid collection plate (301) and the solid collection plate (304) are mirror-symmetrical to each other. Baffles (303) are fixedly connected to both sides of the solid collection plate (304). Arc-shaped protrusions are fixedly connected to the upper surfaces of the baffles (303).

4. The drainage manhole cover with rainwater filtering and self-cleaning functions according to claim 3, characterized in that: The anti-tripping device (5) includes an arc-shaped block two (502). One end of the arc-shaped block two (502) is hinged with a well cover (1). Drainage grooves communicating with each other are formed at the junction of the well cover (1) and the arc-shaped block. A brush plate (501) is fixedly connected to the arc-shaped block two (502) near the drainage groove. An arc-shaped plate (503) is fixedly connected between the two walls of the groove surface of the well cover (1). A night light strip (504) is fixedly connected between the two walls of the groove surface of the well cover (1).

5. The drainage manhole cover with rainwater filtering and self-cleaning functions according to claim 4, characterized in that: A torsion spring is fixedly connected to the hinge joint of the arc-shaped block two (502) and the well cover (1). The other end of the torsion spring away from the arc-shaped block two (502) is fixedly connected to the well cover (1). A rectangular groove is formed in the inner arc surface of the arc-shaped block two (502). The night light strip (504) is located inside the arc-shaped plate (503).

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