CN217840267U - Construction rainfall drainage structures - Google Patents

Abstract

The utility model discloses a rainfall drainage structure for building construction, which comprises a drainage filter box with an opening at the top; The top is magnetically inserted with a cover plate, the top of the cover plate is fixedly connected with a pumping mechanism, and the bottom of the pumping mechanism extends into the drainage filter box. The utility model is convenient for draining and filtering operations, can automatically unblock the L-shaped drain pipe during draining, and automatically seal the L-shaped drain pipe after the draining is completed, which can effectively prevent the peculiar smell in the L-shaped drain pipe from going upwards. The phenomenon of spewing out can reduce the pollution of the environment due to peculiar smell, and can automatically knock and clean and collect the impurities on the top of the first filter during the filtering process, alleviating the risk of clogging of the first filter during the filtering process and improving the filtration efficiency. Stability, and can take out and clean the collected impurities.

Description

A construction rainwater drainage structure

technical field

The utility model relates to the technical field of rainwater drainage structures, in particular to a rainwater drainage structure for building construction.

Background technique

It is inevitable to encounter rainy days during the construction process. When it rains, it is necessary to discharge the rainwater. Sewage pumps are pumped and discharged directly on the spot at high ground. Since the construction site sewage contains a lot of impurities and dirt, if it is discharged directly, it will easily cause blockage of the sewage pipes. Therefore, most of the discharge outlets are installed with filters to filter the sewage.

The filtration drainage method on the traditional rainfall drainage structure lacks a mechanism for automatically knocking, vibrating, cleaning and collecting the impurities on the filter net during the filtering process, which will easily cause the filter net to be blocked during the filtering process, which will affect the drainage efficiency, and the drainage efficiency will be affected. After the completion, there is no mechanism to automatically block the sewage pipes, and the sewage pipes are prone to produce peculiar smells after long-term use, and the peculiar smells will rise upwards and cause pollution to the environment, which cannot meet the needs of use. Based on the above conditions, we propose a construction The rainfall drainage structure is used to solve the above problems.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose a construction rainwater drainage structure.

In order to achieve the above object, the utility model adopts the following technical solutions:

A construction rainwater drainage structure, comprising a drainage filter box with an opening at the top, the bottom of the drainage filter box is set as a conical structure and communicated with and fixed with an L-shaped drainage pipe, and the top of the drainage filter box is magnetically inserted There is a cover plate, the top of the cover plate is fixedly connected with a pumping mechanism, the bottom of the pumping mechanism extends into the drainage filter box, the pumping mechanism is used to pump and drain the external water, and there are multiple water inlet holes on the left side of the top of the cover plate , The right side inner wall of the drainage filter box is magnetically fixed with a collection mechanism, the collection mechanism is used to collect impurities, and the first filter screen installed obliquely is installed between the front side inner wall and the rear side inner wall of the drainage filter box. A filter screen is used to filter impurities in the water. A support block is fixedly connected to the left inner wall of the drainage filter box. The support block is used to support the first filter screen. The top is in movable contact, and the inner wall of the bottom of the drainage filter box is embedded with a knocking mechanism that matches the first filter net. The knocking mechanism is used to knock and clean the first filter net. A fixed plate is fixed inside the L-shaped drain pipe. , the top of the fixed plate is provided with a tapered hole, the bottom of the fixed plate is in movable contact with a sealing plate that matches the tapered hole, the sealing plate is used to seal the tapered hole, the top of the blocking plate is fixedly connected with a Elastic guide drive mechanism, the top of the elastic guide drive mechanism extends into the drainage filter box and is fixedly connected with the front side inner wall and the rear side inner wall of the drainage filter box, and the elastic guide drive mechanism plays a guiding and driving effect on the blocking plate.

Preferably, the pumping mechanism includes a water pump fixedly connected to the top of the cover plate, a protective box is fixedly connected to the top of the cover plate, the water pump is located in the protective box, and the water discharge end of the water pump extends into the drainage filter box and is located at the bottom of the first filter net. Above, the suction end of the water pump extends above the protective box. The right side of the water pump is fixed and electrically connected to a wireless remote control switch. The wireless remote control switch is matched with an external remote control. The wireless remote control switch cooperates with the setting of the external remote control to realize remote control The effect of manipulation.

Preferably, the collection mechanism includes a collection box with an opening at the top, a support plate is fixedly connected to the right inner wall of the drainage filter box, the collection box is magnetically fixed on the top of the support plate, and a pull rod is fixedly connected to the top of the collection box. The top of the pull rod is fixedly connected with a pull ring, and the left inner wall of the collection box is provided with a feeding hole whose top is an opening. The filter screen is used to filter the sewage in the collected impurities. The first filter screen is located on the left side of the collection box and cooperates with the feeding hole on the collection box.

Preferably, the knocking mechanism includes a protective tube embedded and fixed on the bottom inner wall of the drainage filter box, the top of the protective tube is set as a plugging structure, the bottom end of the protective tube extends to the bottom of the drainage filter box, and the protective tube is fixedly installed There is a reciprocating push rod motor, and the protective tube is used to protect the reciprocating push rod motor to prevent the water in the drainage filter box from entering the inside of the reciprocating push rod motor. The top of the output shaft of the reciprocating push rod motor extends to the top of the protective tube and is fixed An elastic knocking ball is connected, the elastic knocking ball is located under the first filter screen and cooperates with the first filter screen, and the reciprocating push rod motor is electrically connected with the wireless remote control switch.

Preferably, the elastic guide driving mechanism includes a rectangular rod fixedly connected to the top of the blocking plate, a support rod is fixedly connected between the front inner wall and the rear inner wall of the drainage filter box, and the top of the support rod is configured as an arc structure, The bottom of the support rod is fixedly connected with a guide tube, and the guide tube is slidably sleeved on the rectangular rod. A spring is fixedly connected between the top of the rectangular rod and the bottom of the support rod. The setting of the spring can relax the tension when the spring is stretched. At the same time, the blocking plate is driven to reset by the rectangular rod.

Preferably, first magnets are fixedly connected to both sides of the bottom of the cover plate, first grooves are formed on both sides of the top of the drainage filter box, and second magnets are fixedly connected to the inner wall of the bottom of the first groove. The bottom of a magnet extends into the corresponding first groove and is attracted to the top of the second magnet, the outer side of the first magnet is in movable contact with the inner wall of the corresponding first groove, and the cover plate passes through the first magnet and the second magnet The magnetic fixation method can quickly realize disassembly and assembly, which is convenient for the follow-up to quickly remove the blockage of the drainage filter box.

Preferably, the top of the support plate is provided with a second groove, the bottom inner wall of the second groove is fixedly connected with a third magnet, the bottom of the collection box is fixedly connected with a fourth magnet, and the bottom of the fourth magnet extends to the first The second groove is adsorbed to the top of the third magnet, the outside of the fourth magnet is in movable contact with the inner wall of the second groove, and the collection box is magnetically fixed so that the collection box can be quickly taken out from the drainage filter box.

Preferably, the front side and the rear side of the first filter screen are respectively in movable contact with the front side inner wall and the rear side inner wall of the drainage filter box, and a first circular hole is opened on the front side of the first filter screen, and the first circular hole The fixed sleeve in the hole is provided with two bearings, and a mounting shaft is fixedly connected between the front inner wall and the rear inner wall of the drainage filter box, and the outer side of the mounting shaft is fixedly connected with the inner ring inner side of the bearing.

Compared with the prior art, the beneficial effects of the utility model are:

1. Through the cooperation of the blocking plate, the fixing plate and the elastic guide driving mechanism, it can automatically unblock the L-shaped drainage pipe during drainage, and automatically block the L-shaped drainage pipe after the drainage is completed, which can effectively Avoid the phenomenon that the peculiar smell in the L-shaped drainage pipe escapes upwards, and reduce the pollution to the environment due to the peculiar smell;

2. Through the cooperation of the water pump, the water inlet hole and the first filter net, the drainage and filtration operation can be realized;

3. Through the cooperation of the collection mechanism and the knocking mechanism, the impurities on the top of the first filter can be knocked and cleaned automatically and collected, so as to alleviate the risk of the first filter clogging during the filtration process and improve the filtration stability.

The utility model is convenient for draining and filtering operations, can automatically unblock the L-shaped drain pipe during draining, and automatically seal the L-shaped drain pipe after the draining is completed, which can effectively prevent the peculiar smell in the L-shaped drain pipe from going upwards. The phenomenon of spewing out can reduce the pollution of the environment due to peculiar smell, and can automatically knock and clean and collect the impurities on the top of the first filter during the filtering process, alleviating the risk of clogging of the first filter during the filtering process and improving the filtration efficiency. Stability, and can take out and clean the collected impurities.

Description of drawings

Fig. 1 is the structural representation of a kind of building construction rainfall drainage structure that the utility model proposes;

Fig. 2 is the cross-sectional structure schematic diagram of Fig. 1;

FIG. 3 is a schematic diagram of an enlarged structure of part A in FIG. 2 .

In the figure: 100, drainage filter box; 101, L-shaped drainage pipe; 1, collection box; 2, cover plate; 3, water pump; 4, first filter screen; 5, water inlet hole; 6, elastic knocking ball; 7. Reciprocating push rod motor; 8. Protective tube; 9. Feed hole; 10. Second filter screen; 11. Pull rod; 12. Fixed plate; 13. Blocking plate; 14. Support rod; 15. Guide tube; 16, rectangular rod; 17, spring.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Referring to Figures 1-3, a building construction rainfall drainage structure includes a drainage filter box 100 with an opening at the top. The drainage filter box 100 is used to drain and filter rainwater during construction. The bottom of the drainage filter box 100 is set as a cone. L-shaped drainpipe 101 is communicated and fixed, and the top of the drain filter box 100 is magnetically inserted with a cover plate 2, wherein both sides of the bottom of the cover plate 2 are fixedly connected with first magnets, and the top two sides of the drain filter box 100 Both sides are provided with a first groove, the bottom inner wall of the first groove is fixedly connected with a second magnet, and the bottom of the first magnet extends into the corresponding first groove and is adsorbed to the top of the second magnet. The outer side of the magnet is in movable contact with the inner wall of the corresponding first groove. The cover plate 2 is fixed by the first magnet and the second magnet, so that it can be easily and quickly disassembled. The top of the cover plate 2 is fixedly connected with a pumping mechanism. The bottom of the pumping mechanism extends into the drainage filter box 100, wherein the pumping mechanism includes a water pump 3 fixedly connected to the top of the cover plate 2, the top of the cover plate 2 is fixedly connected with a protective box, the water pump 3 is located in the protective box, and the protective box is used for The water pump 3 is shielded and protected, the discharge end of the water pump 3 extends into the drainage filter box 100, the extraction end of the water pump 3 extends above the protection box, the right side of the water pump 3 is fixed and electrically connected to a wireless remote control switch, and the wireless remote control switch matches set with an external remote control;

The left side of the top of the cover plate 2 is provided with a plurality of water inlet holes 5, and a collection mechanism is magnetically fixed on the inner wall of the right side of the drainage filter box 100, wherein the collection mechanism includes a collection box 1 with an opening at the top, and the front of the collection box 1 The side and the rear side are respectively in movable contact with the front inner wall and the rear inner wall of the drainage filter box 100. The right inner wall of the drainage filter box 100 is fixedly connected with a support plate, and the collection box 1 is magnetically fixed on the top of the support plate. The top of the plate is provided with a second groove, the bottom inner wall of the second groove is fixedly connected with a third magnet, the bottom of the collection box 1 is fixedly connected with a fourth magnet, and the bottom of the fourth magnet extends into the second groove and Adsorbed with the top of the third magnet, the outer side of the fourth magnet is in movable contact with the inner wall of the second groove, and the collection box 1 is magnetically fixed on the support plate, which can quickly realize the disassembly and assembly of the collection box 1, which is convenient for follow-up The collection box 1 is taken out from the drainage filter box 100. The top of the collection box 1 is fixedly connected with a pull rod 11, and the top of the pull rod 11 is fixedly connected with a pull ring. Hole 9, the left side inner wall of collecting box 1 is embedded with the second filter screen 10 that is positioned at the feed hole 9 below, and the second filter screen 10 is used for filtering the sewage in the collected impurities;

Between the front side inner wall and the rear side inner wall of the drainage filter box 100, the first filter screen 4 that is inclined to be installed is installed with rotation, wherein the front side and the rear side of the first filter screen 4 are respectively connected to the front side inner wall and the rear side of the drainage filter box 100. The side inner wall is in movable contact, the front side of the first filter screen 4 is provided with a first circular hole, and the fixed sleeve in the first circular hole is provided with two bearings, and the front side inner wall and the rear side inner wall of the drainage filter box 100 are fixed. A mounting shaft is connected, and the outside of the mounting shaft is fixedly connected to the inner side of the inner ring of the bearing. Through the cooperation of the mounting shaft and the bearing, the rotational installation of the first filter screen 4 is realized. The first filter screen 4 is located on the left side of the collection box 1 and Cooperate with the feeding hole 9 on the collection box 1, a support block is fixedly connected to the left inner wall of the drainage filter box 100, the bottom left side of the first filter screen 4 is in movable contact with the top of the support block, and the support block is used for The first filter screen 4 is supported, and the bottom inner wall of the drainage filter box 100 is embedded with a knocking mechanism matched with the first filter screen 4, wherein the knocking mechanism includes a protective cover embedded and fixed on the bottom inner wall of the drainage filter box 100. Pipe 8, wherein the bottom inner wall of the drainage filter box 100 is provided with an embedded hole for fixing and installing the protective pipe 8, the top of the protective pipe 8 is set as a plugging structure, and the bottom end of the protective pipe 8 extends to the bottom of the drainage filter box 100 A reciprocating push rod motor 7 is fixedly installed in the protective tube 8, and the protective tube 8 is used to shield and protect the reciprocating push rod motor 7. The top end of the output shaft of the reciprocating push rod motor 7 extends to the top of the protective tube 8 and is fixedly connected elastically. Knocking ball 6, the elastic knocking ball 6 is located under the first filter screen 4 and cooperates with the first filter screen 4, and the reciprocating push rod motor 7 is electrically connected with the wireless remote control switch;

The L-shaped drainage pipe 101 is fixedly installed with a fixed plate 12, and the top of the fixed plate 12 is provided with a tapered hole, and the bottom of the fixed plate 12 is in movable contact with a blocking plate 13 matched with the tapered hole, and the top of the blocking plate 13 An elastic guide driving mechanism is fixedly connected, and the top of the elastic guide driving mechanism extends into the drainage filter box 100 and is fixedly connected with the front side inner wall and the rear side inner wall of the drainage filter box 100. 13 The rectangular rod 16 on the top, the front side inner wall and the rear side inner wall of the drainage filter box 100 are fixedly connected with a support rod 14, the top of the support rod 14 is set as an arc structure, and the top of the support bar 14 is set as an arc structure. way, to facilitate water diversion, the bottom of the support rod 14 is fixedly connected with the guide pipe 15, the support rod 14 is used to support the guide pipe 15, and the guide pipe 15 is slidably sleeved on the rectangular rod 16, wherein the right side of the guide pipe 15 The limit hole is set on the side inner wall, the right side of the rectangular rod 16 is fixedly connected with the limit block, the limit block is slidably connected with the limit hole, and the limit block and the limit hole are slidably connected, which can prevent the rectangular rod 16. The effect of taking off is that a spring 17 is fixedly connected between the top of the rectangular rod 16 and the bottom of the support rod 14. The setting of the spring 17 can drive the blocking plate through the rectangular rod 16 when the spring 17 is in a stretched state to relax the extrusion force. 13 moves back upwards and resets, the utility model is convenient for draining and filtering operations, can automatically unblock the L-shaped drain pipe 101 when draining, and automatically seal the L-shaped drain pipe 101 after the draining is completed, which can effectively Avoid the phenomenon that the peculiar smell in the L-shaped drainage pipe 101 escapes upwards, reduce the pollution to the environment due to the peculiar smell, and can automatically knock and clean and collect the impurities on the top of the first filter 4 during the filtering process, so as to ease the filtering process The risk of clogging of the first filter screen 4 is eliminated, the stability of filtration is improved, and the collected impurities can be taken out and cleaned.

Working principle: When in use, when the drainage filter box 100 is located on a low terrain, the water from a high place can directly enter the drainage filter box 100 through the water inlet 5; Control the wireless remote control switch to control the water pump 3 to turn on, connect the water inlet of the water pump 3 to the external hose for pumping water, put one end of the hose into the water, the water pump 3 pumps the external water, and the pumped water enters the drainage filter box 100, no matter what method is used to enter the water into the drainage filter box 100, it will pass through the first filter 4, and the first filter 4 will filter the impurities in the sewage and cover it on the top, and the filtered sewage will enter the The blocking plate 13 is squeezed in the tapered hole, and the force of extrusion drives the blocking plate 13 to move downward, and the blocking plate 13 drives the rectangular rod 16 to slide downward in the guide tube 15 and stretches the spring 17, thereby sealing When the blocking plate 13 moves downward, the shielding of the tapered hole is released, so that the filtered sewage enters the L-shaped drain pipe 101, and is diverted to the external collection area through the L-shaped drain pipe 101. When the sewage is discharged, , the extrusion force on the blocking plate 13 disappears, and now the elastic force of the spring 17 in the stretched state drives the blocking plate 13 to block the tapered hole through the rectangular rod 16, and automatically seals the L-shaped hole after the water is drained. The way that the drain pipe 101 is blocked can effectively avoid the phenomenon that the peculiar smell in the L-shaped drain pipe 101 escapes upwards, reducing the pollution to the environment due to the peculiar smell;

In the process of drainage, the reciprocating push rod motor 7 can be started, and the output shaft of the reciprocating push rod motor 7 drives the elastic knocking ball 6 to move up and down in a cycle, and the elastic knocking ball 6 moves upward while colliding and squeezing the first filter screen 4 , under the action of the collision extrusion force, the first filter net 4 vibrates and rotates upwards, when the elastic knocking ball 6 moves down to relax the squeezing force on the first filter net 4, so that the first filter net 4 Rotate downward to reset, and the elastic knocking ball 6 vibrates circularly, making the first filter net 4 cyclically vibrate and rotate, and the force of the vibration cooperates with the inclined setting of the first filter net 4, so that the impurities on the top of the first filter net 4 flow along Its inclined surface enters the collection box 1 through the feeding hole 9, and the collection box 1 collects impurities, and at the same time, the water carried in the impurities enters the drainage filter box 100 again through the second filter screen 10, thereby realizing the first filtration. The purpose of automatically knocking, cleaning and collecting the impurities on the top of the net 4 is to alleviate the risk of clogging of the first filter net 4 during the filtration process and improve the filtration stability;

When it is necessary to take out the collection box 1 to clean up the impurities collected inside, move the cover plate 2 upwards to drive the two first magnets upwards to separate from the two second magnets, and release the blocking of the drainage filter box 100. Now you can Pulling the pull ring upwards drives the pull rod 11 to move upwards, and the pull rod 11 drives the collection box 1 to move upwards, and the collection box 1 drives the fourth magnet upward to separate from the third magnet, so that the collection box 1 can be removed from the drainage filter box 100, which is convenient for personnel to Impurities inside it are cleaned up, and the curved handle on the top of the first filter screen 4 is pulled upwards to turn the first filter screen 4 out of the drainage filter box 100, which is convenient for personnel to clean the first filter screen 4, and then rotate the first filter screen 4 after cleaning. The filter screen 4 is moved into the drainage filter box 100, and then the collection box 1 is moved and fixed in the drainage filter box 100, and the cover plate 2 is fixed on the top of the drainage filter box 100 to wait for the next drainage operation.

In this practical description, it should also be noted that, unless otherwise specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, or It may be detachably connected, or integrally connected, may be mechanically connected, may also be electrically connected, may be directly connected, may also be connected through an intermediary, and may be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (8)

1. A rainfall drainage structure for building construction comprises a drainage filter box (100) with an opening at the top, the bottom of the drainage filter box (100) is a conical structure and is fixedly communicated with an L-shaped drainage pipe (101), the drainage filter box is characterized in that a cover plate (2) is magnetically inserted into the top of the drainage filter box (100), a water pumping mechanism is fixedly connected to the top of the cover plate (2), the bottom of the water pumping mechanism extends into the drainage filter box (100), a plurality of water inlet holes (5) are formed in the left side of the top of the cover plate (2), a collecting mechanism is fixedly magnetically attracted to the inner wall of the right side of the drainage filter box (100), a first obliquely arranged filter screen (4) is rotatably installed between the inner wall of the front side and the inner wall of the rear side of the drainage filter box (100), a supporting block is fixedly connected to the inner wall of the left side of the drainage filter box (100), the left side of the bottom of the first filter screen (4) is in movable contact with the top of the supporting block, a knocking and vibrating mechanism matched with the first filter screen (4) is embedded to the inner wall of the bottom of the drainage filter box (100), a fixing plate (12) is fixedly installed in an L-shaped drainage pipe (101), a conical hole is formed in the top of the fixing plate (12), a plugging plate (13) is in movable contact with a plugging plate (13), and an elastic guide driving mechanism extends into the inner wall of the drainage filter box and is connected with the inner wall of the drainage filter box (100).

2. A rainfall drainage structure for building construction according to claim 1, wherein the water pumping mechanism comprises a water pump (3) fixedly connected to the top of the cover plate (2), a protection box is fixedly connected to the top of the cover plate (2), the water pump (3) is located in the protection box, the water discharging end of the water pump (3) extends into the water discharging filter box (100) and is located above the first filter screen (4), the pumping end of the water pump (3) extends above the protection box, a wireless remote control switch is fixedly and electrically connected to the right side of the water pump (3), and an external remote controller is arranged on the wireless remote control switch in a matching manner.

3. The rainfall drainage structure for building construction according to claim 1, wherein the collecting mechanism comprises a collecting box (1) with an opening at the top, a supporting plate is fixedly connected to the inner wall of the right side of the drainage filtering box (100), the collecting box (1) is fixed to the top of the supporting plate in a magnetic attraction manner, a pull rod (11) is fixedly connected to the top of the collecting box (1), a pull ring is fixedly connected to the top end of the pull rod (11), a feeding hole (9) with an opening at the top is formed in the inner wall of the left side of the collecting box (1), a second filter screen (10) located below the feeding hole (9) is embedded in the inner wall of the left side of the collecting box (1), and the first filter screen (4) is located at the left side of the collecting box (1) and matched with the feeding hole (9) in the collecting box (1).

4. The rainfall drainage structure for building construction according to claim 2, wherein the knocking mechanism comprises a protection pipe (8) embedded and fixed on the inner wall of the bottom of the drainage filtering box (100), the top end of the protection pipe (8) is of a blocking structure, the bottom end of the protection pipe (8) extends to the lower portion of the drainage filtering box (100), a reciprocating push rod motor (7) is fixedly installed in the protection pipe (8), the top end of an output shaft of the reciprocating push rod motor (7) extends to the upper portion of the protection pipe (8) and is fixedly connected with an elastic knocking ball (6), the elastic knocking ball (6) is located below the first filtering net (4) and is matched with the first filtering net (4), and the reciprocating push rod motor (7) is electrically connected with the wireless remote control switch.

5. The rainfall drainage structure for building construction according to claim 1, wherein the elastic guiding driving mechanism comprises a rectangular rod (16) fixedly connected to the top of the blocking plate (13), a supporting rod (14) is fixedly connected between the front inner wall and the rear inner wall of the drainage filtering box (100), the top of the supporting rod (14) is arranged in an arc-shaped structure, a guiding pipe (15) is fixedly connected to the bottom of the supporting rod (14), the guiding pipe (15) is slidably sleeved on the rectangular rod (16), and a spring (17) is fixedly connected between the top end of the rectangular rod (16) and the bottom of the supporting rod (14).

6. The rainfall drainage structure for building construction according to claim 1, wherein the cover plate (2) is fixedly connected with first magnets on both sides of the bottom thereof, the drainage filter box (100) is provided with first grooves on both sides of the top thereof, the inner wall of the bottom of each first groove is fixedly connected with a second magnet, the bottom of each first magnet extends into the corresponding first groove and is adsorbed to the top of the corresponding second magnet, and the outer side of each first magnet is in movable contact with the inner wall of the corresponding first groove.

7. A rainfall drainage structure for construction according to claim 3, wherein the supporting plate has a second recess formed at the top thereof, a third magnet is fixedly connected to the inner wall of the bottom of the second recess, a fourth magnet is fixedly connected to the bottom of the collecting tank (1), the bottom of the fourth magnet extends into the second recess and is attracted to the top of the third magnet, and the outer side of the fourth magnet is in movable contact with the inner wall of the second recess.

8. The rainfall drainage structure for building construction according to claim 1, wherein the front side and the rear side of the first filter screen (4) are in movable contact with the inner wall of the front side and the inner wall of the rear side of the drainage filter box (100), respectively, a first circular hole is formed in the front side of the first filter screen (4), two bearings are fixedly sleeved in the first circular hole, an installation shaft is fixedly connected between the inner wall of the front side and the inner wall of the rear side of the drainage filter box (100), and the outer side of the installation shaft is fixedly connected with the inner side of the inner ring of the bearing.

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