Roof secondary drainage device

Abstract

The invention discloses a roof secondary drainage device, and relates to the technical field of secondary drainage, accumulated water can be directly drained through a rainwater hopper, a siphon effect can be formed to accelerate drainage speed, the accumulated water on the roof can be rapidly drained, impurities in water are filtered through a first filter screen, and the impurities in the water are filtered through a second filter screen of an adjusting unit. According to the drainage pipe, water flows through the water collecting box, so that the water has enough thrust, sundries on the first filter screen are pushed to the collecting box, the filter screen is prevented from being blocked, the inner wall of the drainage pipe is cleaned through the brush, the inner wall is kept smooth, accumulated water can flow out smoothly, and leaked water between the first waterproof layer and the second waterproof layer is collected through the water collecting box and discharged.

Description

Technical Field

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

[0002] Roof secondary drainage is the second line of defense for roof drainage, which is used to reduce the drainage pressure of the main drainage pipe, reduce the risk of blockage, and ensure that the accumulated water can still be effectively drained when the main drainage system fails.

[0003] Roof waterproofing mostly adopts a combination of rigid waterproofing and flexible waterproofing methods. The secondary drainage device can remove the accumulated water on the waterproof layer and between the waterproof layers, which can reduce the pressure of the accumulated water on the waterproof layer and extend the service life of the waterproof layer. The traditional secondary drainage device does not have a backflow prevention structure. When the drainage volume is large, backflow is likely to occur, causing the accumulated water to return to the filling layer between the waterproof layers, which can easily damage the waterproof layer over a long period of time and cause water leakage.

[0004] Traditional secondary roof drainage uses a rod on the rain gutter to initially filter out debris in the water, and a filter is set in the pipe to filter out smaller debris. However, the filtered debris will accumulate on the filter and need to be cleaned regularly. Otherwise, the drain pipe will be blocked for a long time or if there is a lot of debris, affecting the drainage efficiency of the drainage system and even causing the drainage system to malfunction. Summary of the invention

[0005] The purpose of the present invention is to provide a roof secondary drainage device to solve the problems raised in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A secondary drainage device for a roof, the secondary drainage device comprising a No. 1 drainage mechanism, a No. 2 drainage mechanism and a main drainage pipe, the No. 1 drainage mechanism and the main drainage pipe are fixedly connected, and the No. 2 drainage mechanism and the main drainage pipe are fixedly connected;

[0008] The No. 1 drainage mechanism includes a rainwater gutter, a No. 1 drain pipe, a No. 1 filter, a collecting box, an adjusting unit, a cleaning unit and a filter orifice plate. The rainwater gutter is fixedly connected to the No. 1 drain pipe, the No. 1 drain pipe is provided with a No. 1 through groove, the No. 1 filter is placed in the No. 1 through groove, the collecting box is fixedly connected to the No. 1 drain pipe, the adjusting unit is placed in the No. 1 through groove, the adjusting unit and the No. 1 filter are fixedly connected, the cleaning unit and the adjusting unit are fixedly connected, the cleaning unit is placed in the No. 1 through groove, the No. 1 drain pipe is provided with a collecting groove, the filter orifice plate is placed in the collecting groove, the filter orifice plate and the No. 1 filter are fixedly connected, and the No. 1 drain pipe is connected to the main drain pipe.

[0009] The No. 1 drainage mechanism is used to guide the accumulated water on the ground into the main drainage pipe. The No. 2 drainage mechanism is used to guide the leakage water between the first waterproof layer and the second waterproof layer into the main drainage pipe. The main drainage pipe collects the accumulated water on the ground and the underground infiltration water and makes them flow to the designated discharge location. The accumulated water on the ground flows into the No. 1 drainage pipe through the rain gutter. The debris in the accumulated water is filtered out through the No. 1 filter. The filtered debris flows to the collection box under the action of the water flow. The debris is collected through the collection box to avoid the pipeline being blocked by the debris. The debris is discharged together with the debris through the filter plate. The water flowing into the collection box can return to the pipe again, so that the water flowing into the collection box does not affect the collection of debris behind it. The filter plate and the No. 1 filter are fixedly connected, so that the No. 1 filter is fixed in the No. 1 slot. The flow rate of water through the No. 1 filter is adjusted by the adjustment unit, and the debris interception and drainage speed are balanced, so that the drainage can effectively flush the debris to the collection box and reduce the risk of blockage. The cleaning unit can reduce the accumulation of dirt on the inner wall of the pipe to prevent pipe blockage, and make the inner wall of the No. 1 slot smoother, reducing water flow resistance, allowing water to flow more smoothly, thereby improving drainage efficiency.

[0010] Furthermore, the adjustment unit includes a No. 2 filter, a No. 1 fixed rod, a No. 1 connecting rod, a No. 2 connecting rod, a No. 1 spring, a No. 1 slider and a No. 2 slider. The No. 2 filter is fixedly connected to the No. 1 fixed rod, the No. 1 fixed rod abuts against the No. 1 filter, a number of No. 1 connecting rods are provided, the No. 1 connecting rod and the No. 1 fixed rod are hingedly connected, the No. 2 connecting rod is provided with a number of No. 2 connecting rods, the No. 2 connecting rod and the No. 1 connecting rod are hingedly connected, the No. 2 connecting rod and the No. 2 slider are fixedly connected, the No. 1 spring and the No. 2 slider are fixedly connected, the No. 1 slider and the No. 1 spring are fixedly connected, and the No. 1 slider and the No. 2 connecting rod are fixedly connected.

[0011] The filter screen No. 2 is abutted against the filter screen No. 1, and the filter holes of the filter screen No. 2 and the filter screen No. 1 are connected, so that the accumulated water passes through the filter holes of the filter screen No. 1 and then through the filter holes of the filter screen No. 2. The number of filter holes of the filter screen No. 2 is less than that of the filter screen No. 1, so that when the drainage volume is small, there is still enough flow force to flush the debris to the collection box. The material of the filter screen No. 2 is a waterproof cloth, but when the drainage volume is large, the drainage will impact the surface of the filter screen No. 2 from the filter screen No. 1, so that the filter screen No. 2 shrinks toward the axis of the fixed rod No. 1, and drives the hinge connected to the fixed rod No. 1 to rotate, so that the connecting rod No. 2 and the slider No. 1 slide downward together, so that water can flow through more filter holes on the filter screen No. 1, thereby increasing the drainage area and further improving the drainage efficiency. The slider No. 1 slides downward to compress the spring No. 1. When the drainage volume becomes smaller, the compressed potential energy of the spring No. 1 is released, so that the connecting rod No. 2 and the slider No. 1 slide upward together, so that the filter screen No. 2 is reset, and the slider No. 2 provides support for the spring No. 1.

[0012] Furthermore, the cleaning unit includes a brush, a No. 2 fixed rod, a No. 2 spring, a block and a No. 3 slider. The brush is fixedly connected to the No. 2 fixed rod, the outer ring of the brush is slidably connected to the No. 1 through groove, the No. 2 spring is sleeved on the No. 1 fixed rod, and the block is fixedly connected to the No. 1 fixed rod.

[0013] Use a brush to clean the inner wall of the No. 1 slot. When the drainage volume is large, under the action of water, the brush slides in the No. 1 slot along the direction of water flow, and cleans the inner wall of the No. 1 slot through the outer ring of the brush contacting it. The No. 2 fixed rod and the No. 3 slider move with the brush, and the No. 2 spring is compressed by the No. 3 slider, and the No. 2 spring is fixed by the block. When the drainage volume becomes smaller, the No. 2 spring releases its potential energy, so that the No. 2 fixed rod, the No. 3 slider and the brush are reset, and the inner wall of the No. 1 slot is cleaned again.

[0014] Furthermore, the No. 2 drainage mechanism includes a water collecting box, a No. 2 drainage pipe, a connecting pipe, a fixed block and a baffle. The water collecting box and the No. 2 drainage pipe are fixedly connected, the connecting pipe and the No. 2 drainage pipe are fixedly connected, the fixed block and the No. 2 drainage pipe are fixedly connected, the baffle and the fixed block are hinged, and the connecting pipe is connected to the main drainage pipe.

[0015] The water leakage between the first waterproof layer and the second waterproof layer is collected through the water collecting box, and the leaked water flows into the connecting pipe through the No. 2 drain pipe, which is arranged as a U-shaped pipe with the water inlet higher than the water outlet. The baffle is hingedly connected to the No. 2 drain pipe through the fixed block, and the baffle abuts against the pipe wall of the No. 2 drain pipe outlet, so that the baffle can only rotate toward the main drain pipe, so that water can only flow to the main drain pipe in one direction.

[0016] Furthermore, the filter screen No. 1 is in a cone shape, the filter screen No. 1 is provided with a conical groove, and the filter screen No. 2 is placed in the conical groove.

[0017] By setting the No. 1 filter screen into a cone shape, the water on the surface of the No. 1 filter screen flows to the bottom of the cone. When debris or dust appears on the surface of the No. 1 filter screen, it flows with the water to the inner wall of the No. 1 drain pipe and flows into the collection tank. By placing the No. 2 filter screen in the conical tank, the No. 2 filter screen and the conical tank are abutted, thereby sealing some of the filter holes on the No. 1 filter screen, so that when the drainage volume is small, there is still enough water to move the debris or dust.

[0018] Furthermore, the No. 1 drainage pipe is provided with a plurality of guide grooves, and the guide grooves are spiral-shaped.

[0019] By providing a plurality of spiral guide grooves in the No. 1 drain pipe, the direction of the water flow is changed so that the debris or dust on the No. 1 filter screen flows to the collection groove, thereby preventing the debris or dust from being stuck in the area between the No. 1 filter screen and the inner wall of the No. 1 drain pipe.

[0020] Furthermore, the rainwater gutter includes a filter rod, a top cover, a gutter body, a guide tube and a support plate. The filter rod and the top cover are connected by a pipeline, the filter rod and the gutter body are fixedly connected, the gutter body is provided with a rectifying groove, the support plate is placed in the rectifying groove, the guide tube is placed in the rectifying groove, the guide tube and the support plate are fixedly connected, the top cover is provided with a guide groove, and the upper part of the guide tube is placed in the guide groove.

[0021] Through the filter rod, when the water on the roof surface flows to the bucket body, the debris in the water is initially filtered out, and the guide tube is installed through the support plate placed in the rectifier groove. The top cover and the filter rod are fixedly connected, so that the upper part of the guide tube is placed in the guide groove of the top cover, thereby forming an inverted U-shaped tube structure. When there is a large amount of drainage, the water floods the top cover to form a siphon effect, thereby accelerating the drainage speed.

[0022] Furthermore, the guide tube is provided with a No. 2 through groove, the guide tube is provided with a No. 3 through groove, the No. 2 through groove is connected to the No. 3 through groove, and the No. 3 through groove is connected to the rectifying groove.

[0023] A No. 2 channel is provided through the guide tube, so that water can flow directly into the No. 3 channel. The No. 3 channel is connected to the rectifying channel, so there is no need to wait for the water level to rise to form a siphon drainage. When the drainage volume is small, the accumulated water on the roof can be quickly drained away by gravity drainage.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. By setting the No. 1 filter screen into a cone shape, the water on the surface of the No. 1 filter screen flows to the bottom of the cone, and drives the debris and dust on it to move to the inner wall of the No. 1 drain pipe. By providing a number of guide grooves in the No. 1 drain pipe, the guide grooves are spiral, thereby changing the direction of the water flow, so that the debris on the filter screen flows into the collection box, avoiding the debris or dust from being stuck in the area between the No. 1 filter screen and the inner wall of the No. 1 drain pipe, so that there is no debris on the No. 1 filter screen, and avoiding the debris from clogging the filter holes of the filter screen.

[0026] 2. By abutting the No. 2 filter and the No. 1 filter, the filter holes of the No. 1 filter are partially sealed, allowing more water to flow around the No. 1 filter. When the drainage volume is small, ensure that there is enough water flow to form a thrust to make the debris or dust on the No. 1 filter flow into the collection box. When the drainage volume is large, the No. 2 filter shrinks toward the axis line, so that the filter holes of the No. 1 filter are no longer sealed, ensuring the drainage effect.

[0027] 3. By setting a guide tube on the rain gutter and using a top cover to form an inverted U-shaped structure, when the drainage volume is large, the water will submerge the top cover to form a siphon effect, thereby speeding up the drainage efficiency. A No. 2 groove is set on the guide tube. When the drainage volume is small, the water can flow directly into the pipe through the No. 2 groove without waiting for the water level to rise, and the accumulated water can be quickly drained.

[0028] 4. Collect the leaked water between the first waterproof layer and the second waterproof layer through the water collecting box, and discharge the leaked water through the No. 2 drain pipe. The baffle is hingedly connected with the fixed block and the baffle, and the baffle abuts against the pipe wall of the No. 2 drain pipe outlet, so that the baffle can only rotate toward the main drain pipe, so that water can only flow to the main drain pipe in one direction, avoiding the phenomenon of water accumulation and backflow.

[0029] 5. Use a brush and rely on the thrust of drainage to clean the inner wall of the pipe to ensure the smoothness of the inner wall of the pipe and avoid dirt on the inner wall of the pipe due to long-term use, which will create resistance to drainage and affect the efficiency of drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the first drainage mechanism of the present invention;

[0032] Figure 3 yes Figure 2 A magnified view of a local area A;

[0033] Figure 4 yes Figure 2 A partial enlarged view of B;

[0034] Figure 5 yes Figure 2 A partial enlarged view of C;

[0035] Figure 6 It is a schematic diagram of the structure of the No. 1 filter screen of the present invention;

[0036] Figure 7 It is a schematic diagram of the structure of the No. 2 filter screen of the present invention.

[0037] In the figure: 1, drainage mechanism No. 1; 11, rainwater bucket; 111, filter rod; 112, top cover; 1121, guide groove; 113, bucket body; 1131, rectifying groove; 114, guide tube; 1141, through groove No. 2; 1142, through groove No. 3; 115, support plate; 12, drainage pipe No. 1; 121, through groove No. 1; 122, collection groove; 123, guide groove; 13, filter screen No. 1; 131, conical groove; 14, collection box; 15, adjustment unit; 151, filter No. 2 Net; 152, No. 1 fixed rod; 153, No. 1 connecting rod; 154, No. 2 connecting rod; 155, No. 1 spring; 156, No. 1 slider; 157, No. 2 slider; 16, cleaning unit; 161, brush; 162, No. 2 fixed rod; 163, No. 2 spring; 164, block; 165, No. 3 slider; 17, filter plate; 2, No. 2 drainage mechanism; 21, water collecting box; 22, No. 2 drainage pipe; 23, connecting pipe; 24, fixed block; 25, baffle; 3, main drainage pipe. DETAILED DESCRIPTION

[0038] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0039] Example: Figure 1-Figure 7 As shown, the present invention provides a technical solution for a secondary drainage device for a roof, a secondary drainage device for a roof, the secondary drainage device comprises a No. 1 drainage mechanism 1, a No. 2 drainage mechanism 2 and a main drainage pipe 3, the No. 1 drainage mechanism 1 and the main drainage pipe 3 are fixedly connected, and the No. 2 drainage mechanism 2 and the main drainage pipe 3 are fixedly connected;

[0040] The No. 1 drainage mechanism 1 includes a rainwater bucket 11, a No. 1 drainage pipe 12, a No. 1 filter 13, a collecting box 14, an adjusting unit 15, a cleaning unit 16 and a filter hole plate 17. The rainwater bucket 11 is fixedly connected to the No. 1 drainage pipe 12, the No. 1 drainage pipe 12 is provided with a No. 1 through groove 121, the No. 1 filter 13 is placed in the No. 1 through groove 121, the collecting box 14 is fixedly connected to the No. 1 drainage pipe 12, the adjusting unit 15 is placed in the No. 1 through groove 121, the adjusting unit 15 and the No. 1 filter 13 are fixedly connected, the cleaning unit 16 and the adjusting unit 15 are fixedly connected, the cleaning unit 16 is placed in the No. 1 through groove 121, the No. 1 drainage pipe 12 is provided with a collecting groove 122, the filter hole plate 17 is placed in the collecting groove 122, the filter hole plate 17 and the No. 1 filter 13 are fixedly connected, and the No. 1 drainage pipe 12 is connected to the main drainage pipe 3.

[0041] The accumulated water on the ground is guided into the main drainage pipe 3 through the No. 1 drainage mechanism 1, and the seepage water between the first waterproof layer and the second waterproof layer is guided into the main drainage pipe 3 through the No. 2 drainage mechanism 2. The accumulated water on the ground and the seepage water underground are collected through the main drainage pipe 3 and flow to the designated discharge location. The accumulated water on the ground flows into the No. 1 drainage pipe 12 through the rain gutter 11, and the debris in the accumulated water is filtered out through the No. 1 filter 13. The filtered debris flows to the collection box 14 under the action of the water flow, and the debris is collected through the collection box 14 to avoid the debris from clogging the pipeline. The debris is then flowed into the collection pipe together with the debris through the filter plate 17. The water in the collection box 14 can return to the pipeline, so that the water flowing into the collection box 14 does not affect the collection of the debris behind it. The filter plate 17 is fixedly connected to the No. 1 filter screen 13, so that the No. 1 filter screen 13 is fixed in the No. 1 through groove 121. The flow rate of water passing through the No. 1 filter screen 13 is adjusted by the adjustment unit 15, and the debris interception and drainage speed are balanced, so that the drainage can effectively flush the debris to the collection box 14, reducing the risk of blockage. The cleaning unit 16 is used to reduce the accumulation of dirt on the inner wall of the pipeline to prevent pipeline blockage, and the inner wall of the No. 1 through groove 121 is made smoother, reducing the water flow resistance, so that the water flow can flow more smoothly, thereby improving the drainage efficiency.

[0042] like Figure 2-Figure 7 As shown, the adjustment unit 15 includes a No. 2 filter screen 151, a No. 1 fixed rod 152, a No. 1 connecting rod 153, a No. 2 connecting rod 154, a No. 1 spring 155, a No. 1 slider 156 and a No. 2 slider 157. The No. 2 filter screen 151 is fixedly connected to the No. 1 fixed rod 152, the No. 1 fixed rod 152 abuts against the No. 1 filter screen 13, a plurality of No. 1 connecting rods 153 are provided, the No. 1 connecting rod 153 and the No. 1 fixed rod 152 are hingedly connected, the No. 2 connecting rod 154 is provided with a plurality of No. 2 connecting rods 154, the No. 2 connecting rod 154 is hingedly connected to the No. 1 connecting rod 153, the No. 2 connecting rod 154 and the No. 2 slider 157 are fixedly connected, the No. 1 spring 155 and the No. 2 slider 157 are fixedly connected, the No. 1 slider 156 and the No. 1 spring 155 are fixedly connected, and the No. 1 slider 156 and the No. 2 connecting rod 154 are fixedly connected.

[0043] The second filter screen 151 is abutted against the first filter screen 13, and the filter holes of the second filter screen 151 and the first filter screen 13 are connected, so that the accumulated water passes through the filter holes of the first filter screen 13 and then passes through the filter holes of the second filter screen 151. The number of filter holes of the second filter screen 151 is less than that of the first filter screen 13, so that when the drainage volume is small, there is still enough flow force to flush the debris to the collection box 14. The material of the second filter screen 151 is a waterproof cloth, but when the drainage volume is large, the drainage will impact the surface of the second filter screen 151 from the first filter screen 13, causing the second filter screen 151 to shrink toward the axis of the first fixing rod 152 , and drives the No. 1 connecting rod 153 to rotate along the hinge connected to the No. 1 fixing rod 152, so that the No. 2 connecting rod 154 and the No. 1 slider 156 slide downward together, so that water can flow through more filter mesh holes on the No. 1 filter screen 13, thereby increasing the drainage area and further improving the drainage efficiency. The No. 1 slider 156 slides downward to compress the No. 1 spring 155. When the drainage volume becomes smaller, the compressed potential energy of the No. 1 spring 155 is released, so that the No. 2 connecting rod 154 and the No. 1 slider 156 slide upward together, thereby resetting the No. 2 filter screen 151, and providing support for the No. 1 spring 155 through the No. 2 slider 157.

[0044] like Figure 2-Figure 4 As shown, the cleaning unit 16 includes a brush 161, a No. 2 fixed rod 162, a No. 2 spring 163, a block 164 and a No. 3 slider 165. The brush 161 is fixedly connected to the No. 2 fixed rod 162, the outer ring of the brush 161 is slidably connected to the No. 1 through groove 121, the No. 2 spring 163 is sleeved on the No. 1 fixed rod 152, and the block 164 is fixedly connected to the No. 1 fixed rod 152.

[0045] The inner wall of the No. 1 through groove 121 is cleaned by the brush 161. When the drainage volume is large, under the action of water, the brush 161 slides in the No. 1 through groove 121 along the direction of water flow, and the inner wall of the No. 1 through groove 121 is contacted by the outer ring of the brush 161 to clean it. The No. 2 fixed rod 162 and the No. 3 slider 165 move with the brush 161, and the No. 2 spring 163 is compressed by the No. 3 slider 165, and the No. 2 spring 163 is fixed by the block 164. When the drainage volume becomes smaller, the No. 2 spring 163 releases potential energy, so that the No. 2 fixed rod 162, the No. 3 slider 165 and the brush 161 are reset, and the inner wall of the No. 1 through groove 121 is cleaned again.

[0046] like Figure 2 and Figure 5 As shown, the No. 2 drainage mechanism 2 includes a water collecting box 21, a No. 2 drainage pipe 22, a connecting pipe 23, a fixed block 24 and a baffle 25. The water collecting box 21 and the No. 2 drainage pipe 22 are fixedly connected, the connecting pipe 23 and the No. 2 drainage pipe 22 are fixedly connected, the fixed block 24 and the No. 2 drainage pipe 22 are fixedly connected, the baffle 25 and the fixed block 24 are hingedly connected, and the connecting pipe 23 is connected to the main drainage pipe 3.

[0047] The water leakage between the first waterproof layer and the second waterproof layer is collected through the water collecting box 21, and the leaked water flows into the connecting pipe 23 through the No. 2 drain pipe 22, which is arranged as a U-shaped pipe with the water inlet higher than the water outlet. The fixed block 24 and the baffle 25 are hingedly connected, and the baffle 25 abuts against the pipe wall of the outlet of the No. 2 drain pipe 22, so that the baffle 25 can only rotate toward the main drain pipe 3, so that water can only flow to the main drain pipe 3 in one direction.

[0048] like Figure 3 As shown, the No. 1 filter screen 13 is conical, and the No. 1 filter screen 13 is provided with a conical groove 131 , and the No. 2 filter screen 151 is placed in the conical groove 131 .

[0049] By setting the No. 1 filter screen 13 to be cone-shaped, the water on the surface of the No. 1 filter screen 13 flows to the bottom of the cone. When debris or dust appears on the surface of the No. 1 filter screen 13, it flows with the water to the inner wall of the No. 1 drain pipe 12 and flows into the collection tank 122. By placing the No. 2 filter screen 151 in the conical groove 131, the No. 2 filter screen 151 and the conical groove 131 are abutted, thereby sealing part of the filter holes on the No. 1 filter screen 13, so that when the drainage volume is small, there is still enough water to move the debris or dust.

[0050] like Figure 2 As shown, the No. 1 drainage pipe 12 is provided with a plurality of guide grooves 123, and the guide grooves 123 are spiral.

[0051] By providing a plurality of spiral guide grooves 123 in the No. 1 drain pipe 12, the direction of the water flow is changed so that the debris or dust on the No. 1 filter screen 13 flows to the collection groove 122, thereby preventing the debris or dust from being stuck in the area between the No. 1 filter screen 13 and the inner wall of the No. 1 drain pipe 12.

[0052] like Figure 2 As shown, the rain gutter 11 includes a filter rod 111, a top cover 112, a bucket body 113, a guide tube 114 and a support plate 115. The filter rod 111 and the top cover 112 are connected by a pipeline, the filter rod 111 and the bucket body 113 are fixedly connected, the bucket body 113 is provided with a rectifying groove 1131, the support plate 115 is placed in the rectifying groove 1131, the guide tube 114 is placed in the rectifying groove 1131, the guide tube 114 and the support plate 115 are fixedly connected, the top cover 112 is provided with a guide groove 1121, and the upper part of the guide tube 114 is placed in the guide groove 1121.

[0053] When water on the roof surface flows to the bucket 113 through the filter rod 111, the debris in the water is initially filtered out, and the guide tube 114 is installed through the support plate 115 placed in the rectifying groove 1131. The top cover 112 and the filter rod 111 are fixedly connected, so that the upper part of the guide tube 114 is placed in the guide groove 1121 of the top cover 112, thereby forming an inverted U-shaped tube structure. When a large amount of drainage occurs, the water floods the top cover 112 to form a siphon effect, thereby accelerating the drainage speed.

[0054] like Figure 2 As shown, the guide tube 114 is provided with a second through slot 1141 , and the guide tube 114 is provided with a third through slot 1142 . The second through slot 1141 is connected to the third through slot 1142 , and the third through slot 1142 is connected to the rectifying slot 1131 .

[0055] A No. 2 channel 1141 is provided through the guide tube 114, so that water can directly flow into the No. 3 channel 1142. The No. 3 channel 1142 is connected to the rectifying channel 1131, so there is no need to wait for the water level to rise to form a siphon drainage. When the drainage volume is small, the accumulated water on the roof can be quickly drained away by gravity drainage.

[0056] Working principle: The accumulated water on the roof surface is collected through the rain gutter 11, and the debris in the water is initially filtered out through the filter rod 111. The upper part of the guide tube 114 is placed in the guide groove 1121 of the top cover 112. When there is a large amount of drainage, the water floods the top cover 112 to form a siphon effect, thereby accelerating the drainage speed. When the drainage volume is small, the accumulated water is quickly discharged through the No. 2 through groove 1141 by relying on gravity drainage, and discharged into the No. 1 drain pipe 12 through the rectifying groove 1131. By setting the No. 1 filter screen 13 to a cone shape, the water on the surface of the No. 1 filter screen 13 flows to the bottom of the cone, and through the guide groove 123, the debris or dust on the No. 1 filter screen 13 flows to the collection groove 122, so that the debris and dust flow to the collection groove 122 connected to the collection box 14, and the water and debris are separated through the filter plate 17 and flow back into the pipe, so that the water flowing into the collection box 14 is not In order to affect the collection of the debris behind, the filter plate 17 and the No. 1 filter screen 13 are fixedly connected, so that the No. 1 filter screen 13 is fixed in the No. 1 through groove 121, and the number of filter holes sealing the No. 1 filter screen 13 is adjusted according to the drainage volume through the No. 2 filter screen 151, so as to control the flow rate of the drainage, so that the drainage can effectively flush the debris to the collection box 14, and the inner wall of the pipeline is cleaned by the brush 161, which reduces the water flow resistance and improves the drainage efficiency. The No. 1 drain pipe 12 and the main drain pipe 3 are connected to discharge the accumulated water to the designated position, and the leakage water between the first waterproof layer and the second waterproof layer is collected through the water collection box 21, and the leakage water is made to flow into the connecting pipe 23 through the No. 2 drain pipe 22, which is hingedly connected by the fixed block 24 and the baffle 25, and the baffle 25 abuts against the pipe wall of the outlet of the No. 2 drain pipe 22, so that the baffle 25 can only rotate toward the main drain pipe 3, so that the water can only flow to the main drain pipe 3 in one direction.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A secondary drainage device for a roof, characterized in that: The secondary drainage device comprises a No. 1 drainage mechanism (1), a No. 2 drainage mechanism (2) and a main drainage pipe (3), wherein the No. 1 drainage mechanism (1) and the main drainage pipe (3) are fixedly connected, and the No. 2 drainage mechanism (2) and the main drainage pipe (3) are fixedly connected; The No. 1 drainage mechanism (1) comprises a rainwater bucket (11), a No. 1 drainage pipe (12), a No. 1 filter screen (13), a collection box (14), an adjustment unit (15), a cleaning unit (16) and a filter plate (17); the rainwater bucket (11) and the No. 1 drainage pipe (12) are fixedly connected; the No. 1 drainage pipe (12) is provided with a No. 1 through groove (121); the No. 1 filter screen (13) is placed in the No. 1 through groove (121); the collection box (14) and the No. 1 drainage pipe (12) are fixedly connected; the adjustment unit (15) 15) is placed in the No. 1 through groove (121), the regulating unit (15) and the No. 1 filter screen (13) are fixedly connected, the cleaning unit (16) and the regulating unit (15) are fixedly connected, the cleaning unit (16) is placed in the No. 1 through groove (121), the No. 1 drainage pipe (12) is provided with a collecting groove (122), the filter hole plate (17) is placed in the collecting groove (122), the filter hole plate (17) and the No. 1 filter screen (13) are fixedly connected, and the No. 1 drainage pipe (12) is connected to the main drainage pipe (3).

2. A secondary roof drainage device according to claim 1, characterized in that: The regulating unit (15) comprises a No. 2 filter screen (151), a No. 1 fixing rod (152), a No. 1 connecting rod (153), a No. 2 connecting rod (154), a No. 1 spring (155), a No. 1 slider (156) and a No. 2 slider (157); the No. 2 filter screen (151) and the No. 1 fixing rod (152) are fixedly connected; the No. 1 fixing rod (152) and the No. 1 filter screen (13) are in contact; the No. 1 connecting rod (153) is provided with a plurality of ) is hingedly connected to a No. 1 fixed rod (152), a plurality of No. 2 connecting rods (154) are provided, the No. 2 connecting rod (154) is hingedly connected to the No. 1 connecting rod (153), the No. 2 connecting rod (154) is fixedly connected to the No. 2 slider (157), the No. 1 spring (155) is fixedly connected to the No. 2 slider (157), the No. 1 slider (156) is fixedly connected to the No. 1 spring (155), and the No. 1 slider (156) is fixedly connected to the No. 2 connecting rod (154).

3. A secondary roof drainage device according to claim 2, characterized in that: The cleaning unit (16) comprises a brush (161), a No. 2 fixed rod (162), a No. 2 spring (163), a clamping block (164) and a No. 3 sliding block (165); the brush (161) and the No. 2 fixed rod (162) are fixedly connected; the outer ring of the brush (161) and the No. 1 through groove (121) are slidably connected; the No. 2 spring (163) is sleeved on the No. 1 fixed rod (152); and the clamping block (164) and the No. 1 fixed rod (152) are fixedly connected.

4. A secondary roof drainage device according to claim 3, characterized in that: The No. 2 drainage mechanism (2) comprises a water collecting box (21), a No. 2 drainage pipe (22), a connecting pipe (23), a fixing block (24) and a baffle (25); the water collecting box (21) and the No. 2 drainage pipe (22) are fixedly connected; the connecting pipe (23) and the No. 2 drainage pipe (22) are fixedly connected; the fixing block (24) and the No. 2 drainage pipe (22) are fixedly connected; the baffle (25) and the fixing block (24) are hingedly connected; and the connecting pipe (23) and the main drainage pipe (3) are in communication.

5. A secondary roof drainage device according to claim 4, characterized in that: The first filter screen (13) is conical in shape, the first filter screen (13) is provided with a conical groove (131), and the second filter screen (151) is placed in the conical groove (131).

6. A secondary roof drainage device according to claim 5, characterized in that: The No. 1 drainage pipe (12) is provided with a plurality of guide grooves (123), and the guide grooves (123) are spiral-shaped.

7. A secondary roof drainage device according to claim 6, characterized in that: The rainwater gutter (11) comprises a filter rod (111), a top cover (112), a gutter body (113), a guide tube (114) and a support plate (115); the filter rod (111) and the top cover (112) are connected by a pipeline; the filter rod (111) and the gutter body (113) are fixedly connected; the gutter body (113) is provided with a rectifying groove (1131); the support plate (115) is placed in the rectifying groove (1131); the guide tube (114) is placed in the rectifying groove (1131); the guide tube (114) and the support plate (115) are fixedly connected; the top cover (112) is provided with a guide groove (1121); the upper part of the guide tube (114) is placed in the guide groove (1121).

8. A secondary roof drainage device according to claim 7, characterized in that: The guide tube (114) is provided with a No. 2 through groove (1141), and the guide tube (114) is provided with a No. 3 through groove (1142). The No. 2 through groove (1141) and the No. 3 through groove (1142) are in communication, and the No. 3 through groove (1142) and the rectifying groove (1131) are in communication.

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