Energy-saving rainwater collection and recycling water-collecting building and construction method thereof

Abstract

The present application relates to an energy-saving rainwater collection and recycling water-collecting building and its construction method. The energy-saving rainwater collection and recycling water-collecting building comprises a building and a collection box. The building has a window, a drain pipe, a flow channel 1, an adjusting arm rotatably connected to the drain pipe, a flow channel 2, a water inlet and a water outlet, a baffle in the flow channel 1, a controller and a connecting pipe, a water pump, a sensor on the adjusting arm, and a sensor on the drain pipe. The homeowner can access falling rainwater or rainwater collected in the collection box indoors without having to move outdoors to collect water, making it more convenient for the homeowner to access rainwater indoors. The collected rainwater can be used for washing objects, flushing toilets, etc., thereby realizing the recycling of rainwater, reducing the use of tap water, helping to alleviate water shortages, and achieving energy conservation.

Description

Technical Field

[0001] The present application relates to the field of building construction, and in particular to an energy-saving rainwater collection and recycling water-collecting building and a construction method thereof. Background Art

[0002] With the acceleration of urbanization, water shortage and energy consumption problems are becoming increasingly prominent. Traditional buildings mostly adopt direct discharge mode in rainwater management, resulting in a large amount of rainwater loss, aggravating the problems of urban waterlogging and insufficient groundwater recharge. Therefore, the research and application of building rooftop rainwater collection mechanisms are becoming more and more extensive, becoming an important part of green buildings and sustainable development concepts.

[0003] For example, the Chinese invention patent with patent publication number CN120083266A discloses an outdoor rooftop rainwater collection mechanism, including a house, with filter boxes symmetrically fixedly connected on both sides of the house, a filter plate fixedly connected to the filter box close to the house, a drain pipe fixedly connected to the bottom of the filter box, a connecting pipe fixedly connected to the lower part of the drain pipe, a collection box fixedly connected to the end of the connecting pipe away from the drain pipe, a liquid extraction pipe fixedly connected to the upper part of the collection box, a sealing cover threadedly connected to the upper part of the liquid extraction pipe, an adjustment shell fixedly connected to both ends of the filter box, a second motor is provided inside the adjustment shell, a worm is provided at the output end of the second motor, and the worm is meshingly connected to a worm wheel.

[0004] When the homeowner wants to use the rainwater collected in the collection box indoors using the rooftop rainwater collection mechanism, he needs to go outside to open the sealing cover on the collection box and then take out the rainwater before using it, which is troublesome and needs to be improved. Summary of the Invention

[0005] In order to improve the problem that it is troublesome for homeowners to access rainwater collected in a collection box when indoors, the present application provides an energy-saving rainwater collection and recycling water-collecting building and a construction method thereof.

[0006] In a first aspect, the present application provides an energy-saving rainwater collection and recycling water-collecting building, which adopts the following technical solutions:

[0007] A water-collecting building for energy-saving rainwater collection and recycling, comprising a building body and a collection box, a window being provided on the building body, a water storage chamber being provided in the collection box, a drain pipe being provided on the building body, a flow channel 1 being provided in the drain pipe, the flow channel 1 being connected to the water storage chamber, an adjusting arm being rotatably connected to the drain pipe, the window being provided for the adjusting arm to rotatably extend into, a flow channel 2 being provided in the adjusting arm, a water inlet and a water outlet being provided on the adjusting arm to be connected to the flow channel 2, the water inlet being located in the flow channel 1, a baffle being provided in the flow channel 1, the baffle covering the water inlet, and the water inlet being separated from the baffle when the adjusting arm is extended into the window;

[0008] The collecting box is provided with a controller and a connecting pipe, the connecting pipe connects the water storage chamber and the second flow channel, the connecting pipe is provided with a water pump, the liquid inlet and liquid outlet on the water pump are connected with the connecting pipe, the regulating arm is provided with a sensor, the drain pipe is provided with a sensed component, the sensor is used to sense the sensed component and output a control signal to the controller, the controller controls the water pump to turn on, so that the water pump sucks the liquid in the water storage chamber into the second flow channel.

[0009] By adopting the above technical solution, when the homeowner wants to use the collected rainwater indoors, if it is raining at this time, the adjusting arm can be rotated so that the adjusting arm extends into the window, and the rainwater entering the drain pipe flows into the water inlet and flow channel 2, and then discharged through the water outlet. The homeowner can collect the rainwater discharged from the water outlet for use, reducing the use of driving parts such as water pumps, thereby reducing energy consumption; if it is not raining at this time, the adjusting arm can be rotated so that the sensor senses the sensed part and then outputs a control signal to the controller. The controller controls the water pump to start, so that the water pump sucks the liquid in the water storage chamber into flow channel 2, so that the homeowner can use the rainwater collected in the collection box indoors without moving outdoors to collect water, making it more convenient for the homeowner to use rainwater when he is indoors. The collected rainwater can be used for washing objects, flushing toilets, etc., realizing the recycling of rainwater, reducing the use of tap water, helping to alleviate the problem of water shortage and achieving energy saving.

[0010] Optionally, the adjusting arm includes a collar, an extension rod and a splicing block, the drain pipe is provided with a mounting groove for the splicing block to be inserted, the collar is provided with a through-hole for the drain pipe to pass through, the collar is provided with a threaded column, the collar and the threaded column are spliced ​​to form a clearance hole, the clearance hole and the through-hole are connected and are for the splicing block to be inserted, the extension rod is provided with a threaded groove for the splicing block to be inserted and for the threaded column to be threadedly connected, when the threaded column is threadedly connected to the threaded groove, the extension rod presses the splicing block against the end of the threaded column, the water inlet is provided on the splicing block, the water outlet is provided on the extension rod, and the flow channel 2 is formed by splicing the splicing block and the extension rod.

[0011] By adopting the above technical solution, the adjusting arm and the drain pipe are separated, which can reduce the space occupied during transportation and facilitate transportation. When installing the adjusting arm, the ring is placed on the outside of the drain pipe, and then the splicing block is inserted into the clearance hole and the installation groove. Then, the extension rod is threadedly connected to the threaded column so that the extension rod presses the splicing block against the end of the threaded column. The installation of the adjusting arm on the drain pipe can be completed without the help of other tools or connecting accessories, and the operation is simple.

[0012] Optionally, the drain pipe is provided with a plurality of protrusions 1 in the circumferential direction, the protrusion 1 is located below the collar, the protrusion 1 is provided with an elastic sheet, the elastic sheet is located between adjacent protrusions 1, and the elastic sheet is inclined downward in the direction close to the adjacent protrusion 1, the adjacent protrusions 1 and the drain pipe are spliced ​​to form a slot, the drain pipe is provided with a connecting ring, the connecting ring is located between the collar and the protrusion 1, the connecting ring is provided with a plurality of protrusions 2 in the circumferential direction, the protrusion 2 is located in the slot, the collar is provided with a plurality of positioning grooves, the positioning grooves and the protrusions 2 correspond one to one, and the positioning grooves are for the protrusions 2 to be snapped into.

[0013] By adopting the above technical solution, when it is necessary to rotate the adjusting arm, the connecting ring is moved downward, and the second protrusion squeezes the elastic sheet so that the elastic sheet bends and deforms in the direction close to the corresponding protrusion one, so that the second protrusion moves downward and the second protrusion disengages from the positioning groove, and the adjusting arm can be rotated. When the adjusting arm is rotated to the corresponding position and the positioning groove and the second protrusion are aligned, the second protrusion is released, the elastic sheet is reset and pushes the second protrusion to be stuck in the corresponding positioning groove. The connecting ring is limited by the contact between the first protrusion and the second protrusion to prevent the connecting ring from rotating relative to the drain pipe. Therefore, the adjusting arm can be positioned by the contact between the second protrusion and the inner wall of the positioning groove to reduce the situation where the adjusting arm rotates under the blowing of wind and causes the water pump to start accidentally. During installation, the connecting ring can be put on the outside of the drain pipe for use. The installation is quick and convenient.

[0014] Optionally, the house body is provided with an eaves, a water collecting trough is opened on the eaves, a plurality of through holes connected with the flow channel are opened circumferentially on the outer wall of the drain pipe, the through holes are located in the water collecting trough, a filter cover is threadedly connected to the drain pipe, the filter cover is located in the water collecting trough, and the upper end face of the filter cover is conical, and the lower end of the filter cover is located below the through holes and abuts the bottom wall of the water collecting trough.

[0015] By adopting the above technical solution, on the one hand, when installing the drain pipe, the lower end of the filter cover can be abutted against the bottom wall of the water collection tank to limit the drain pipe, so as to facilitate the subsequent installation and fixation of the drain pipe. On the other hand, a part of the rainwater flows into the drain pipe through the upper end of the drain pipe, and the rainwater on the outside of the drain pipe enters the drain pipe through the through hole to increase the water collection efficiency. At this time, the filter cover can filter the debris above or around the drain pipe to reduce the situation where the debris enters the water storage chamber.

[0016] In a second aspect, the present application provides a construction method for a water-collecting building that can collect and recycle energy-saving rainwater, using the following technical solutions:

[0017] A construction method for the above-mentioned energy-saving rainwater collection and recycling water-collecting building comprises the following steps:

[0018] S1. Build the house;

[0019] S2. Install the drain pipe and adjustment arm;

[0020] S3. Fix the drainage pipe on the outer wall of the room;

[0021] S4. Connect the drain pipe and collection box.

[0022] By adopting the above technical solution, a rainwater collection structure is formed, which is convenient for indoor people to obtain rainwater.

[0023] In a third aspect, the present application provides a construction method for a water-collecting building that can collect and recycle energy-saving rainwater, using the following technical solutions:

[0024] A construction method for the above-mentioned energy-saving rainwater collection and recycling water-collecting building comprises the following steps:

[0025] S1. Build the house;

[0026] S2. Install the connecting ring and the sleeve ring on the outside of the drain pipe in sequence, then insert the splicing block into the clearance hole and the installation groove, and then thread the extension rod onto the threaded column to complete the installation of the drain pipe and the adjustment arm;

[0027] S3. Fix the drainage pipe on the outer wall of the room;

[0028] S4. Connect the drain pipe and collection box.

[0029] In a fourth aspect, the present application provides a construction method for a water-collecting building that can collect and recycle energy-saving rainwater, using the following technical solutions:

[0030] A construction method for the above-mentioned energy-saving rainwater collection and recycling water-collecting building comprises the following steps:

[0031] S1. Build the house and eaves, and reserve holes on the eaves for installing drainage pipes;

[0032] S2. Install the drain pipe and adjustment arm;

[0033] S3. Insert the drain pipe through the reserved hole on the eaves, then thread the filter cover onto the drain pipe, place the lower end of the filter cover against the bottom wall of the sump to limit the drain pipe, and then secure the drain pipe to the outer wall of the house.

[0034] S4. Connect the drain pipe and collection box.

[0035] In summary, this application includes at least one of the following beneficial technical effects:

[0036] 1. Homeowners can access falling rainwater or rainwater collected in a collection box indoors without having to move outdoors to collect water. This makes it more convenient for homeowners to access rainwater while indoors. The collected rainwater can be used for washing objects, flushing toilets, etc., realizing the recycling of rainwater, reducing the use of tap water, helping to alleviate water shortages and achieve energy conservation;

[0037] 2. The adjustment arm and the drain pipe can be separated to reduce the space occupied during transportation and facilitate transportation. When installing the adjustment arm, no other tools or connecting accessories are required, making the operation easy;

[0038] 3. By setting up a filter cover, on the one hand, the lower end of the filter cover is abutted against the bottom wall of the water collection tank to limit the drain pipe, so as to facilitate the subsequent installation and fixation of the drain pipe. On the other hand, it can increase the water collection efficiency and reduce the entry of debris into the water storage chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is an overall schematic diagram of an embodiment of the present application.

[0040] Figure 2 This is a structural diagram of the embodiment of the present application cut away at the eaves, drain pipe and filter cover.

[0041] Figure 3 for Figure 2 The enlarged view of part A in the middle mainly shows the structure of the filter cover.

[0042] Figure 4 This is a partial cross-sectional view of an embodiment of the present application, mainly showing the structure of the adjustment arm and the baffle.

[0043] Figure 5 This is a partial exploded structural diagram of an embodiment of the present application, mainly showing the structure of the clearance hole and the positioning groove.

[0044] Figure 6 This is a partial structural diagram of an embodiment of the present application, mainly showing the structure of the installation slot.

[0045] Explanation of the accompanying symbols: 1. Room body; 11. Window; 2. Collection box; 3. Eaves; 31. Water collecting trough; 4. Drain pipe; 41. Flow channel 1; 42. Through hole; 43. Mounting slot; 5. Filter cover; 51. Filter part; 511. Make way slot; 52. Connecting part; 6. Adjusting arm; 61. Ring; 611. Perforation; 612. Positioning slot; 62. Extension rod; 621. Threaded groove; 622. Water outlet; 63. Splicing block; 631. Water inlet; 7. Threaded column; 8. Make way hole; 9. Baffle; 10. Flow channel 2; 12. Bump 1; 13. Elastic sheet; 14. Slot; 15. Connecting ring; 16. Bump 2; 17. Controller; 18. Connecting pipe; 19. Water pump; 20. Sensor; 21. Induced part. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-6 This application is described in further detail.

[0047] The present application discloses an energy-saving rainwater collection and recycling water collection building. Figure 1 and Figure 2 The energy-saving rainwater collection and recycling water-collecting building includes a house body 1 and a collection box 2. A window 11 is provided on the outer wall of the house body 1. A house eaves 3 is fixed to the outer wall of the house body 1. The house eaves 3 is located above the window 11. A water collecting trough 31 is provided on the upper end surface of the house eaves 3. The collection box 2 is located outside the house body 1 and below the window 11. A water storage cavity is provided in the collection box 2.

[0048] See also Figure 1-Figure 3 A drainage pipe 4 is fixed on the house body 1. The drainage pipe 4 is located between the eaves 3 and the collection box 2. The upper end of the drainage pipe 4 passes through the eaves 3 and extends into the water collection tank 31. The lower end of the drainage pipe 4 is fixedly connected to the collection tank 2. A flow channel 41 is opened in the drainage pipe 4. The flow channel 41 is connected to the water storage cavity. A plurality of through holes 42 connected to the flow channel 41 are evenly spaced on the outer wall of the drainage pipe 4. The through holes 42 are located in the water collection tank 31. A filter cover 5 is threadedly connected to the drainage pipe 4. The filter cover 5 is located in the water collection tank 31 and is located Above the drain pipe 4, the filter cover 5 includes a filter portion 51 and a connecting portion 52. The upper end surface of the filter portion 51 is conical, and a makeshift groove 511 is provided on the lower end surface of the filter portion 51. The connecting portion 52 is located in the makeshift groove 511 and is fixedly connected to the filter portion 51. The connecting portion 52 is annular, and a threaded surface is formed on the outer peripheral wall of the connecting portion 52 so that it can be threadedly connected to the flow channel 41. When the connecting portion 52 is threadedly connected to the drain pipe 4, the lower end of the filter portion 51 is located below the through hole 42 and abuts the bottom wall of the water collection tank 31.

[0049] See also Figures 1-6, the drain pipe 4 is rotatably connected to the adjusting arm 6, the window 11 is for the adjusting arm 6 to rotate and extend into, the adjusting arm 6 includes a collar 61, an extension rod 62 and a splicing block 63, a through-hole 611 is opened on the collar 61, the through-hole 611 is for the drain pipe 4 to pass through, when the drain pipe 4 passes through the through-hole 611, the drain pipe 4 fits the inner wall of the through-hole 611, the collar 61 is rotatably connected to the drain pipe 4, and the rotation axis of the collar 61 is vertically arranged, a threaded column 7 is fixed on the collar 61, the threaded column 7 is located on one side of the collar 61 along the horizontal direction, the collar 61 and the threaded column 7 are spliced ​​to form a clearance hole 8, the clearance hole 8 is connected to the through-hole 611, and the clearance hole 8 is for the splicing block 63 to be snapped into, and a mounting groove 43 is provided on the outer wall of the drain pipe 4 for the splicing block 63 to be snapped into. The mounting groove 43 is connected to the flow channel 1 41, and a water inlet 631 is provided on the upper end face of the splicing block 63. A baffle 9 is also fixed on the drain pipe 4, and the baffle 9 is located in the flow channel 1 41 and above the mounting groove 43. When the splicing block 63 is snapped into the give way hole 8 and the mounting groove 43, the splicing block 63 slides along the rotation direction of the ring 61 and is connected to the mounting groove 43. The water inlet 631 is located in the flow channel 1 41, and the baffle 9 covers the water inlet 631. When the adjusting arm 6 extends into the window 11, the water inlet 631 is separated from the baffle 9.

[0050] See also Figures 1-6 The extension rod 62 is located on the side of the splicing block 63 away from the drain pipe 4. A threaded groove 621 is provided on the outer wall of the extension rod 62 near the splicing block 63. The threaded groove 621 is for the splicing block 63 to be inserted into and for the threaded column 7 to be threadedly connected. When the threaded column 7 is threadedly connected in the threaded groove 621, the extension rod 62 presses the splicing block 63 against the end of the threaded column 7. The splicing block 63 and the extension rod 62 are spliced ​​to form the flow channel 2 10. A water outlet 622 is provided on the outer wall of the extension rod 62. The water outlet 622 is located below the extension rod 62, and the water inlet 631 and the water outlet 622 are both connected to the flow channel 2 10.

[0051] See also Figures 1-6The outer wall of the drain pipe 4 is fixed with a plurality of protrusions 12 at uniform intervals in the circumferential direction. The protrusion 12 is located below the collar 61, and an elastic sheet 13 is fixed on both sides of each protrusion 12. The elastic sheet 13 is located between adjacent protrusions 12, and the elastic sheet 13 is inclined downward in the direction close to the adjacent protrusion 12. Adjacent protrusions 12 and the drain pipe 4 are spliced ​​to form a slot 14. A connecting ring 15 is provided on the drain pipe 4. The connecting ring 15 is located between the collar 61 and the protrusion 12, and a plurality of protrusions 2 16 are fixed on the connecting ring 15 at uniform intervals in the circumferential direction. The number and position of the protrusions 2 16 correspond to the number and position of the slots 14 one-to-one. Each protrusion 2 16 is located in the corresponding slot 14. The lower end surface of the collar 61 is provided with a plurality of positioning grooves 612. The number and position of the positioning grooves 612 correspond to the number and position of the protrusions 2 16 one-to-one. The positioning grooves 612 are for the protrusions 2 16 to be snapped in. In this embodiment, the elastic sheet 13 is made of plastic and has elasticity.

[0052] When the collar 61 needs to be rotated, the connecting ring 15 is moved downward, and the second protrusion 16 squeezes the elastic sheet 13 so that the elastic sheet 13 bends and deforms in the direction close to the corresponding protrusion 12, so that the second protrusion 16 moves downward so that the second protrusion 16 disengages from the positioning groove 612, and the collar 61 can be rotated. When the collar 61 is rotated to the corresponding position and the positioning groove 612 and the second protrusion 16 are aligned, the second protrusion 16 is released, and the elastic sheet 13 is reset to push the second protrusion 16 into the corresponding positioning groove 612. The connecting ring 15 is limited by the contact between the first protrusion 12 and the second protrusion 16 to prevent the connecting ring 15 from rotating relative to the drain pipe 4. Therefore, the collar 61 can be positioned by the contact between the second protrusion 16 and the inner wall of the positioning groove 612.

[0053] See also Figures 1-6 A controller 17 and a connecting pipe 18 are fixed on the outer wall of the collection box 2. The end of the connecting pipe 18 away from the collection box 2 is fixedly connected to the extension rod 62. The connecting pipe 18 connects the water storage chamber and the flow channel 2 10. A water pump 19 is fixed on the connecting pipe 18. The liquid inlet and the liquid outlet on the water pump 19 are both connected to the connecting pipe 18. A sensor 20 is fixed on the collar 61, and a sensed part 21 is fixed on the drain pipe 4. The sensor 20 is used to sense the sensed part 21 and output a control signal to the controller 17. The controller 17 controls the water pump 19 to start, so that the water pump 19 draws the liquid in the water storage chamber into the flow channel 2 10. In this embodiment, the sensor 20 is a displacement sensor and the sensed part 21 is an iron block.

[0054] The implementation principle of the energy-saving rainwater collection and recycling water-collecting building in the embodiment of the present application is as follows:

[0055] When the homeowner wants to use the collected rainwater indoors, if it is raining, the adjusting arm 6 can be rotated so that the adjusting arm 6 extends into the window 11, and the rainwater entering the drain pipe 4 flows into the water inlet 631 and the flow channel 10, and then discharged through the water outlet 622. The homeowner can collect the rainwater discharged from the water outlet 622 for use, thereby reducing the use of driving parts such as the water pump 19, thereby reducing energy consumption.

[0056] If it does not rain at this time, the adjusting arm 6 can be rotated so that the sensor 20 senses the sensed element 21 and then outputs a control signal to the controller 17. The controller 17 controls the water pump 19 to start, so that the water pump 19 sucks the liquid in the water storage chamber into the flow channel 2 10, so that the homeowner can use the rainwater collected in the collection box 2 indoors without moving outdoors to collect water, making it more convenient for the homeowner to use rainwater indoors. The collected rainwater can be used for washing objects, flushing toilets, etc., realizing the recycling of rainwater, reducing the use of tap water, helping to alleviate the problem of water shortage, and achieving energy saving.

[0057] The present application also discloses a construction method for a water-collecting building that can collect and recycle energy-saving rainwater, comprising the following steps:

[0058] S1. Build the house body 1 and the eaves 3, and reserve holes on the eaves 3 for installing the drainage pipe 4;

[0059] S2. Install the connecting ring 15 and the collar 61 on the outside of the drain pipe 4 in sequence, then insert the splicing block 63 into the clearance hole 8 and the installation groove 43, and then thread the extension rod 62 onto the threaded column 7 to complete the installation of the drain pipe 4 and the adjustment arm 6;

[0060] S3. Insert the drain pipe 4 through the reserved hole on the eaves 3, then screw the filter cover 5 onto the drain pipe 4, and limit the drain pipe 4 by abutting the lower end of the filter cover 5 against the bottom wall of the water collection tank 31. Then, fix the drain pipe 4 to the outer wall of the house 1.

[0061] S4. Connect the drainage pipe 4 and the collection box 2.

[0062] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A water-collecting building for energy-saving rainwater collection and recycling, comprising a building body (1) and a collection box (2), wherein the building body (1) is provided with a window (11), the collection box (2) is provided with a water storage cavity, the building body (1) is provided with a drainage pipe (4), the drainage pipe (4) is provided with a flow channel (41), the flow channel (41) is connected to the water storage cavity, and is characterized in that: The drain pipe (4) is rotatably connected to an adjusting arm (6), and the window (11) is provided for the adjusting arm (6) to be rotatably inserted into. A second flow channel (10) is provided in the adjusting arm (6), and a water inlet (631) and a water outlet (622) are provided on the adjusting arm (6) and are communicated with the second flow channel (10). The water inlet (631) is located in the first flow channel (41), and a baffle (9) is provided in the first flow channel (41). The baffle (9) covers the water inlet (631). When the adjusting arm (6) is inserted into the window (11), the water inlet (631) is separated from the baffle (9). The collecting box (2) is provided with a controller (17) and a connecting pipe (18), the connecting pipe (18) is connected to the water storage chamber and the second flow channel (10), the connecting pipe (18) is provided with a water pump (19), the liquid inlet and the liquid outlet of the water pump (19) are connected to the connecting pipe (18), the regulating arm (6) is provided with a sensor (20), the drain pipe (4) is provided with a sensed component (21), the sensor (20) is used to sense the sensed component (21) and output a control signal to the controller (17), and the controller (17) controls the water pump (19) to start, so that the water pump (19) sucks the liquid in the water storage chamber into the second flow channel (10).

2. The energy-saving rainwater collection and recycling water-collecting building according to claim 1 is characterized by: The regulating arm (6) comprises a collar (61), an extension rod (62) and a splicing block (63); a mounting groove (43) for the splicing block (63) to be inserted into the drain pipe (4); a through hole (611) is provided on the collar (61); the through hole (611) is for the drain pipe (4) to be inserted into; a threaded column (7) is provided on the collar (61); the collar (61) and the threaded column (7) are spliced ​​to form a clearance hole (8); the clearance hole (8) is communicated with the through hole (611) and is for the splicing block (63) to be inserted into; the extension rod ( A thread groove (621) is provided on the splicing block (63), the thread groove (621) is for the splicing block (63) to be inserted into and for the threaded column (7) to be threadedly connected. When the threaded column (7) is threadedly connected in the thread groove (621), the extension rod (62) presses the splicing block (63) against the end of the threaded column (7). The water inlet (631) is provided on the splicing block (63), and the water outlet (622) is provided on the extension rod (62). The flow channel 2 (10) is formed by splicing the splicing block (63) and the extension rod (62).

3. The energy-saving rainwater collection and recycling water-collecting building according to claim 2 is characterized by: The drainage pipe (4) is provided with a plurality of protrusions (12) on the circumference thereof. The protrusions (12) are located below the collar (61). The protrusions (12) are provided with elastic sheets (13). The elastic sheets (13) are located between adjacent protrusions (12). The elastic sheets (13) are inclined downward in the direction of approaching the adjacent protrusions (12). The adjacent protrusions (12) and the drainage pipe (4) are spliced ​​to form a slot (14). The drainage pipe ( 4) is provided with a connecting ring (15), the connecting ring (15) is located between the collar (61) and the protrusion one (12), a plurality of protrusions two (16) are provided on the circumferential direction of the connecting ring (15), the protrusion two (16) are located in the clamping groove (14), a plurality of positioning grooves (612) are provided on the collar (61), the positioning grooves (612) and the protrusion two (16) are in one-to-one correspondence, and the positioning grooves (612) are for the protrusion two (16) to be clamped.

4. The energy-saving rainwater collection and recycling water-collecting building according to claim 1 is characterized by: The house body (1) is provided with an eaves (3), a water collecting trough (31) is provided on the eaves (3), a plurality of through holes (42) in communication with the flow channel (41) are provided on the outer wall of the drain pipe (4) in a circumferential direction, the through holes (42) are located in the water collecting trough (31), a filter cover (5) is threadedly connected to the drain pipe (4), the filter cover (5) is located in the water collecting trough (31), and the upper end surface of the filter cover (5) is conical, and the lower end of the filter cover (5) is located below the through holes (42) and abuts against the bottom wall of the water collecting trough (31).

5. A construction method for a water-collecting building for energy-saving rainwater collection and recycling according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1, building the house (1); S2, installing the drain pipe (4) and the adjustment arm (6); S3, fixing the drainage pipe (4) to the outer wall of the house (1); S4. Connect the drainage pipe (4) and the collection box (2).

6. A construction method for the energy-saving rainwater collection and recycling water-collecting building according to claim 3, characterized in that: The following steps are involved: S1, building the house (1); S2. The connecting ring (15) and the sleeve ring (61) are successively mounted on the outside of the drain pipe (4), and the splicing block (63) is then inserted into the clearance hole (8) and the installation groove (43), and the extension rod (62) is then threadedly connected to the threaded column (7), thereby completing the installation of the drain pipe (4) and the adjustment arm (6); S3, fixing the drainage pipe (4) to the outer wall of the house (1); S4. Connect the drainage pipe (4) and the collection box (2).

7. A construction method for the energy-saving rainwater collection and recycling water-collecting building according to claim 4, characterized in that: The following steps are involved: S1, build the house body (1) and the eaves (3), and reserve a hole for installing the drainage pipe (4) on the eaves (3); S2, installing the drain pipe (4) and the adjustment arm (6); S3, passing the drainage pipe (4) through the reserved hole on the eaves (3), then threading the filter cover (5) onto the drainage pipe (4), limiting the drainage pipe (4) by having the lower end of the filter cover (5) abut against the bottom wall of the water collecting tank (31), and then fixing the drainage pipe (4) to the outer wall of the house (1); S4. Connect the drainage pipe (4) and the collection box (2).

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