Chimney waist drainage structure

Abstract

The utility model relates to the technical field of chimneys, and discloses a chimney waist drainage structure which comprises a chimney cylinder and a downpipe. The chimney barrel comprises a first barrel section and a second barrel section arranged on the top face of the first barrel section. A gutter is arranged on the area, exposed out of the second barrel section, of the top face of the first barrel section. The gutters comprise the first gutter, the second gutter, the third gutter and the fourth gutter, and the first gutter and the second gutter are oppositely arranged on the two sides of the chimney barrel. The third gutter is divided into a third gutter upper section close to the first gutter and a third gutter lower section close to the second gutter by the first water-stopping reverse ridge, and the fourth gutter is divided into a fourth gutter upper section close to the first gutter and a fourth gutter lower section close to the second gutter by the second water-stopping reverse ridge. One end of the third gutter upper section close to the first water-stop reverse ridge, one end of the fourth gutter upper section close to the second water-stop reverse ridge, one end of the second gutter close to the third gutter and one end of the second gutter close to the fourth gutter are respectively communicated with the downpipe.

Description

Technical Field

[0001] The utility model relates to the technical field of chimneys, in particular to a chimney waist drainage structure. Background Art

[0002] Currently, with the rapid development of the thermal power generation industry, the use of special-shaped chimneys is gradually entering the power industry in pursuit of aesthetic appeal. To achieve a more visually appealing chimney facade, horizontal decorative moldings are required at the chimney waist. However, these moldings cause rainwater to accumulate at this location, and uncontrolled drainage there can easily lead to overflow, resulting in water stains on the chimney facade and alkali buildup, affecting the chimney's aesthetic appearance. Furthermore, the prolonged impact of overflowing rainwater on the chimney wall can thin the concrete protective layer, adversely affecting the chimney's structural safety.

[0003] Therefore, there is an urgent need for a chimney waist drainage structure to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a chimney waist drainage structure to prevent rainwater gathered at the chimney transverse decorative lines from overflowing.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A chimney body, comprising a first body section and a second body section arranged on the top surface of the first body section; along the radial direction of the chimney body, the outer side surface of the second body section is located between the outer side surface and the inner side surface of the first body section; a gutter is provided on the area of ​​the top surface of the first body section exposed from the second body section, and the gutter extends along the circumference of the chimney body; the gutter includes a first gutter, a second gutter, a third gutter and a fourth gutter, and the first gutter and the second gutter are arranged on opposite sides of the chimney body; along the height direction of the chimney body, the first gutter is located above the second gutter The third gutter connects the first end of the first gutter and the first end of the second gutter, and the fourth gutter connects the second end of the first gutter and the second end of the second gutter; a first water-stopping ridge is provided in the middle of the third gutter in the extension direction, and the first water-stopping ridge divides the third gutter into an upper section of the third gutter close to the first gutter and a lower section of the third gutter close to the second gutter; a second water-stopping ridge is provided in the middle of the fourth gutter in the extension direction, and the second water-stopping ridge divides the fourth gutter into an upper section of the fourth gutter close to the first gutter and a lower section of the fourth gutter close to the second gutter;

[0007] A downpipe extends along the height direction of the chimney body, and an end of the upper section of the third gutter close to the first water-stop ridge, an end of the upper section of the fourth gutter close to the second water-stop ridge, an end of the second gutter close to the third gutter, and an end of the second gutter close to the fourth gutter are respectively connected to the downpipe.

[0008] As an improvement to the above technical solution, the first gutter includes a first gutter left section and a first gutter right section, the first end of the first gutter left section is connected to the first end of the first gutter right section, the second end of the first gutter left section is connected to the third gutter upper section, the second end of the first gutter right section is connected to the fourth gutter upper section, the first gutter left section is inclined downward from the first end to the second end at a first slope, and the first gutter right section is inclined downward from the first end to the second end at the first slope;

[0009] The second ditch includes a left section of the second ditch and a right section of the second ditch. The first end of the left section of the second ditch is connected to the first end of the right section of the second ditch. The second end of the left section of the second ditch is connected to the lower section of the third ditch. The second end of the right section of the second ditch is connected to the lower section of the fourth ditch. The left section of the second ditch is inclined downward from the first end to the second end at a first slope, and the right section of the second ditch is inclined downward from the first end to the second end at the first slope.

[0010] As an improvement of the above technical solution, it also includes a water diversion pipe, and one end of the upper section of the third gutter close to the first water-stop ridge, one end of the upper section of the fourth gutter close to the second water-stop ridge, one end of the left section of the second gutter close to the third gutter, and one end of the right section of the second gutter close to the fourth gutter are all provided with drainage holes. The downpipe is arranged on the inner side of the chimney body, one end of the drainage hole extends into the gutter, and the other end extends to the inner side of the chimney body. The water diversion pipe and the drainage hole are arranged in a one-to-one correspondence, one end of the water diversion pipe is connected to the corresponding drainage hole, and the other end is connected to the downpipe.

[0011] As an improvement of the above technical solution, a side-entry rainwater gutter is provided at each of the drainage holes, and the water diversion pipe is connected to one end of the side-entry rainwater gutter extending to the inner side of the chimney cylinder.

[0012] As an improvement of the above technical solution, a plurality of waterfall steps are provided in the upper section of the third gutter, the lower section of the third gutter, the upper section of the fourth gutter and the lower section of the fourth gutter.

[0013] As an improvement of the above technical solution, it also includes a water retaining wall. A water retaining wall is arranged on the top surface of the first cylinder section. The water retaining wall is located on the outside of the second cylinder section and extends along the circumference of the first cylinder section. The water retaining wall, the top surface of the first cylinder section and the outer side surface of the second cylinder section are arranged to form the gutter.

[0014] As an improvement to the above technical solution, the following is also included:

[0015] a first waterstop steel plate, which is provided at the connection between the first barrel section and the second barrel section, the upper portion of the first waterstop steel plate extending into the first barrel section, and the lower portion extending into the second barrel section, and the first waterstop steel plate extending along the circumference of the chimney barrel;

[0016] A second waterstop steel plate is provided at the connection between the water retaining wall and the first cylinder section. The upper part of the second waterstop steel plate extends into the water retaining wall, and the lower part extends into the first cylinder section. The second waterstop steel plate extends along the circumference of the chimney cylinder.

[0017] As an improvement of the above technical solution, a waterproof layer is provided at the bottom of the gutter.

[0018] As an improvement of the above technical solution, vertical wall flashing is provided on the bottom of the outer side surface of the second cylinder section and on the side of the retaining wall facing the gutter.

[0019] As an improvement of the above technical solution, a waterproof protrusion is provided on the side of the water retaining wall facing the gutter in a direction close to the second cylindrical section. The waterproof protrusion is arranged on the top of the water retaining wall and extends along the extension direction of the water retaining wall.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The chimney waist drainage structure of the utility model drains water through the gutter at the horizontal decorative lines of the chimney facade formed by splicing the first cylinder section and the second cylinder section. The rainwater collected in the area on the top surface of the first cylinder section that is exposed to the second cylinder section flows into the gutter. The rainwater flowing into the first gutter at one end near the third gutter and the rainwater flowing into the upper section of the third gutter flow to the downpipe via one end of the upper section of the third gutter near the first water-stop ridge. The rainwater flowing into the first gutter at one end near the fourth gutter and the rainwater flowing into the upper section of the fourth gutter flow to the downpipe via the first end of the upper section of the fourth gutter near the second water-stop ridge. The rainwater flowing into the lower section of the third gutter and the rainwater flowing into one end of the second gutter near the third gutter flow to the downpipe via one end of the second gutter near the third gutter. The rainwater flowing into the lower section of the fourth gutter and the rainwater flowing into one end of the second gutter near the fourth gutter flow to the downpipe via one end of the second gutter near the fourth gutter. This allows the rainwater flowing into the gutter to flow to the downpipe more evenly from four locations, thereby preventing excessive accumulation of rainwater in a certain place in the gutter and causing overflow. In addition, by setting the first water-stopping ridge, the inclined third gutter is separated from the middle, and by setting the second water-stopping ridge, the inclined fourth gutter is also separated from the middle, thereby reducing the maximum drop of rainwater flowing in the gutter, and avoiding overflow at the turning point of the gutter due to excessive flow of rainwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a top view of the chimney waist drainage structure provided by an embodiment of the utility model;

[0023] Figure 2 This is a cross-sectional view perpendicular to the extending direction of the first gutter of the chimney waist drainage structure provided by an embodiment of the present utility model;

[0024] Figure 3 This is a cross-sectional view of the third gutter of the chimney waist drainage structure provided by an embodiment of the present utility model, parallel to its own extension direction;

[0025] Figure 4 It is a partial cross-sectional view of the water retaining wall and the first cylinder section of the chimney waist drainage structure provided by an embodiment of the present utility model.

[0026] In the picture:

[0027] 1. Chimney body;

[0028] 11. First cylinder section;

[0029] 12. Second cylinder section;

[0030] 13. Gutter;

[0031] 131. First sulcus; 1311. Left segment of first sulcus; 1312. Right segment of first sulcus;

[0032] 132, Second Day Ditch; 1321, Left Section of Second Day Ditch; 1322, Right Section of Second Day Ditch;

[0033] 133, the third ditch; 1331, the first water-stopping ridge; 1332, the upper section of the third ditch; 1333, the lower section of the third ditch;

[0034] 134, the fourth ditch; 1341, the second water-stopping ridge; 1342, the upper section of the fourth ditch; 1343, the lower section of the fourth ditch;

[0035] 135. Waterfall steps;

[0036] 2. Downspout;

[0037] 3. Water pipe;

[0038] 4. Side-entry rainwater bucket;

[0039] 5. Retaining wall; 51. Waterproof ridge; 52. Drainage slope;

[0040] 6. The first waterstop steel plate;

[0041] 7. Second waterstop steel plate;

[0042] 8. Waterproof layer;

[0043] 9. Water overflows from the vertical wall. DETAILED DESCRIPTION

[0044] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0045] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0046] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0047] In the description of this embodiment, terms such as "upper," "lower," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0048] like Figure 1-Figure 4As shown, this embodiment provides a chimney waist drainage structure, including a chimney barrel 1 and a downpipe 2. The chimney barrel 1 includes a first barrel section 11 and a second barrel section 12 arranged on the top surface of the first barrel section 11. The joint between the first barrel section 11 and the second barrel section 12 forms a horizontal decorative line on the chimney facade. Along the radial direction of the chimney body 1, the outer side surface of the second cylinder section 12 is located between the outer side surface and the inner side surface of the first cylinder section 11; a gutter 13 is provided on the area of ​​the top surface of the first cylinder section 11 exposed to the second cylinder section 12, and the gutter 13 extends along the circumference of the chimney body 1; the gutter 13 includes a first gutter 131, a second gutter 132, a third gutter 133 and a fourth gutter 134, and the first gutter 131 and the second gutter 132 are relatively arranged on both sides of the chimney body 1; along the height direction of the chimney body 1, the first gutter 131 is located above the second gutter 132; the third gutter 133 connects the first end of the first gutter 131 and the first end of the second gutter 132 At one end, the fourth gutter 134 connects the second end of the first gutter 131 and the second end of the second gutter 132; a first water-stopping ridge 1331 is provided in the middle of the extension direction of the third gutter 133, and the first water-stopping ridge 1331 separates the third gutter 133 into a third gutter upper section 1332 close to the first gutter 131 and a third gutter lower section 1333 close to the second gutter 132; a second water-stopping ridge 1341 is provided in the middle of the extension direction of the fourth gutter 134, and the second water-stopping ridge 1341 separates the fourth gutter 134 into a fourth gutter upper section 1342 close to the first gutter 131 and a fourth gutter lower section 1343 close to the second gutter 132. The downpipe 2 extends along the height direction of the chimney body 1, and the end of the third gutter upper section 1332 close to the first water-stop ridge 1331, the end of the fourth gutter upper section 1342 close to the second water-stop ridge 1341, the end of the second gutter 132 close to the third gutter 133, and the end of the second gutter 132 close to the fourth gutter 134 are respectively connected to the downpipe 2.

[0049] Those skilled in the art will appreciate that the first gutter 131 and the second gutter 132 are respectively located on both sides of the chimney body 1, the first gutter 131 is located above the second gutter 132, and the third gutter 133 and the fourth gutter 134 are respectively connected to the first gutter 131 and the second gutter 132, that is, the third gutter 133 and the fourth gutter 134 are both inclined gutters arranged at an angle.

[0050] The chimney waist drainage structure provided in this embodiment drains water from the horizontal decorative lines of the chimney facade formed by the splicing of the first cylinder section 11 and the second cylinder section 12 through the gutter 13. Rainwater collected in the area of ​​the top surface of the first cylinder section 11 exposed to the second cylinder section 12 flows into the gutter 13. Rainwater flowing into the first gutter 131 near the end of the third gutter 133 and rainwater flowing into the upper section 1332 of the third gutter flows to the downpipe 2 through the end of the upper section 1332 of the third gutter near the first water stop 1331. Rainwater flowing into the first gutter 131 near the end of the fourth gutter 134 and rainwater flowing into the upper section 1342 of the fourth gutter flows to the downpipe 2 through the first end of the upper section 1342 of the fourth gutter near the second water stop 1341. Rainwater entering the lower section 1333 of the third gutter and the end of the second gutter 133 near the third gutter 133 flows through the end of the second gutter 132 near the third gutter 133 to the downpipe 2. Rainwater entering the lower section 1343 of the fourth gutter and the end of the second gutter 132 near the fourth gutter 134 flows through the end of the second gutter 132 near the fourth gutter 134 to the downpipe 2. This ensures that rainwater flowing into the gutter 13 flows relatively evenly from four locations to the downpipe 2, preventing excessive accumulation of rainwater at a single location in the gutter 13 and causing overflow. Furthermore, by providing the first water-stopping ridge 1331 to block the inclined third gutter 133 in the middle, and the second water-stopping ridge 1341 to block the inclined fourth gutter 134 in the middle, the maximum drop of rainwater flowing within the gutter 13 is reduced, preventing excessive flow of water within the gutter 13 from causing overflow at the bend of the gutter 13. This solves the problem that rainwater overflows from the horizontal decorative lines of the chimney facade, causing water stains on the chimney facade, alkali efflorescence on the wall, and affecting the appearance of the chimney wall. It also solves the problem that overflowing rainwater erodes the chimney wall for a long time, causing the wall concrete protective layer to become thinner, which has an adverse effect on the structural safety of the chimney.

[0051] Alternatively, as Figure 1As shown, the first gutter 131 includes a first gutter left section 1311 and a first gutter right section 1312. The first end of the first gutter left section 1311 is connected to the first end of the first gutter right section 1312, the second end of the first gutter left section 1311 is connected to the third gutter upper section 1332, and the second end of the first gutter right section 1312 is connected to the fourth gutter upper section 1342. The first gutter left section 1311 is arranged downwardly at a first slope from the first end to the second end, and the first gutter right section 1312 is arranged downwardly at the first slope from the first end to the second end. Thus, rainwater flowing into the first gutter left section 1311 flows to the third gutter 133, and rainwater flowing into the first gutter right section 1312 flows to the fourth gutter 134. The second gutter 132 includes a left section 1321 and a right section 1322. The first end of the left section 1321 communicates with the first end of the right section 1322, the second end of the left section 1321 communicates with the third gutter lower section 1333, and the second end of the right section 1322 communicates with the fourth gutter lower section 1343. The left section 1321 is arranged downwardly at a first slope from its first end to its second end, while the right section 1322 is arranged downwardly at a first slope from its first end to its second end. This ensures that rainwater flowing into the left section 1321 flows toward the third gutter 133, while rainwater flowing into the right section 1322 flows toward the fourth gutter 134. In this embodiment, the first slope is 1%.

[0052] Alternatively, as Figure 1 As shown, the chimney waist drainage structure provided in this embodiment also includes a water diversion pipe 3. Drain holes are provided at one end of the third gutter upper section 1332 near the first water-stopping ridge 1331, one end of the fourth gutter upper section 1342 near the second water-stopping ridge 1341, one end of the second gutter left section 1321 near the third gutter 133, and one end of the second gutter right section 1322 near the fourth gutter 134. Downpipe 2 is disposed inside the chimney body 1, with one end of the drainage hole extending into the gutter 13 and the other end extending inside the chimney body 1. The water diversion pipe 3 is provided in a one-to-one correspondence with the drainage holes, one end of the water diversion pipe 3 communicating with the corresponding drainage hole and the other end communicating with the downpipe 2. The provision of the water diversion pipe 3 enables communication between the drainage holes and the downpipe 2. In this embodiment, the downpipes 2 and the water diversion pipe 3 are provided in a one-to-one correspondence, communicating with the corresponding downpipe 2, and forming an angle of 45° with the horizontal direction.

[0053] Further, if Figure 1 As shown, each drainage hole is provided with a side-entry rainwater bucket 4, and the water diversion pipe 3 is connected to one end of the side-entry rainwater bucket 4 extending to the inner side of the chimney body 1. By arranging the side-entry rainwater bucket 4 at the drainage hole, the rainwater flowing from the gutter 13 to the drainage hole is quickly collected and discharged.

[0054] Alternatively, as Figure 1 and Figure 3 As shown, multiple drop steps 135 are disposed sequentially along the third gutter upper section 1332, the third gutter lower section 1333, the fourth gutter upper section 1342, and the fourth gutter lower section 1343. Drop steps 135 dissipate water potential energy, effectively reducing the flow rate within gutter 13 and preventing water from overflowing at the bend. Drop steps 135 are commonly used in water conservancy facilities, and their specific structure is not detailed here.

[0055] Alternatively, as Figure 2 As shown, the chimney waist drainage structure provided in this embodiment also includes a water retaining wall 5. The water retaining wall 5 is arranged on the top surface of the first cylinder section 11. The water retaining wall 5 is located on the outside of the second cylinder section 12 and extends along the circumference of the first cylinder section 11. The water retaining wall 5, the top surface of the first cylinder section 11 and the outer side surface of the second cylinder section 12 are surrounded to form a gutter 13.

[0056] Alternatively, as Figure 2 and Figure 4 As shown, the chimney waist drainage structure provided in this embodiment also includes a first waterstop steel plate 6 and a second waterstop steel plate 7. The first waterstop steel plate 6 is provided at the connection between the first cylinder section 11 and the second cylinder section 12. The upper part of the first waterstop steel plate 6 extends into the first cylinder section 11, and the lower part extends into the second cylinder section 12. The first waterstop steel plate 6 extends along the circumference of the chimney cylinder 1. The provision of the first waterstop steel plate 6 improves the sealing and waterproofing effect at the connection between the first cylinder section 11 and the second cylinder section 12. The second waterstop steel plate 7 is provided at the connection between the water retaining wall 5 and the first cylinder section 11. The upper part of the second waterstop steel plate 7 extends into the water retaining wall 5, and the lower part extends into the first cylinder section 11. The second waterstop steel plate 7 extends along the circumference of the chimney cylinder 1. The provision of the second waterstop steel plate 7 improves the waterproof sealing effect at the connection between the water retaining wall 5 and the first cylinder section 11. The first waterstop steel plate 6 and the second waterstop steel plate 7 are both provided with reinforcement holes for the reinforcement to pass through, and are both disconnected at the position of the drainage hole to allow the drainage hole to pass through.

[0057] Alternatively, as Figure 2As shown, a waterproof layer 8 is provided at the bottom of the gutter 13. This improves the waterproof sealing effect of the bottom of the gutter 13. The waterproof layer 8 is provided on the top surface of the first cylindrical section 11. In this embodiment, the waterproof layer 8 includes a high-strength water-based rubber asphalt waterproof coating layer, a polymer membrane-based self-adhesive waterproof membrane layer, a self-adhesive TPO waterproof membrane layer, and a 1:3 waterproof cement mortar surface layer, which are arranged in sequence from bottom to top. The high-strength water-based rubber asphalt waterproof coating layer has a thickness of 2 mm. The coating used complies with the "Water-emulsified Asphalt Waterproof Coating" JC / T408-2005, where the bonding strength is ≥1.0 MPa; the polymer membrane-based self-adhesive waterproof membrane layer has a thickness of 1.5 mm and complies with the "Wet-laid Waterproof Membrane" GBT35467-2017, where the tensile force is ≥500 N / 50 mm; the seams of the self-adhesive TPO waterproof membrane layer are welded by hot air and the seam peel strength is ≥4 N / mm. The thickness of the self-adhesive TPO waterproof membrane layer is 1.6 mm. The thickness of the 1:3 waterproof cement mortar surface layer is 20 mm. A 1:3 cement mortar base layer is also provided below the waterproof layer 8 in the first and second trenches 131 and 132, and the thickness of the 1:3 cement mortar base layer is 50 mm.

[0058] Further, if Figure 2 As shown, vertical wall flashing 9 is provided on the bottom of the outer side of the second cylinder section 12 and the side of the retaining wall 5 facing the gutter 13. This further improves the waterproof sealing effect on the inner side of the retaining wall 5 and the waterproof sealing effect on the outer side of the bottom end of the second cylinder section 12.

[0059] Alternatively, as Figure 2 As shown, a waterproof protrusion 51 is provided on the side of the water retaining wall 5 facing the gutter 13 in a direction close to the second cylindrical section 12. The waterproof protrusion 51 is provided on the top of the water retaining wall 5 and extends along the extension direction of the water retaining wall 5. The waterproof protrusion 51 prevents rainwater in the gutter 13 from splashing out.

[0060] Optionally, a water-dispersing slope 52 is provided on the top of the retaining wall 5. The top surface of the retaining wall 5 slopes downward at a second slope from the end away from the gutter 13 to the end closer to the gutter 13 to form the water-dispersing slope 52. The water-dispersing slope 52 is formed by leveling the slope with a 1:3 cement mortar. The specific value of the second slope is selected as needed.

[0061] The chimney waist drainage structure provided in this embodiment uses water-stop steel plates (the first water-stop steel plate 6 and the second water-stop steel plate 7) to separate the construction joints on the inner and outer side walls of the gutter 13 to prevent alkali backflow on the chimney side walls. The third gutter 133 and the fourth gutter 134 use organized drainage, and a side-entry rainwater bucket 4 is provided on the inner side of the gutter wall to collect rainwater in the gutter 13 and drain it away, effectively preventing the formation of water stains on the outer wall of the chimney and preventing rainwater from overflowing and eroding the concrete protective layer on the outer wall of the chimney. The third gutter 133 and the fourth gutter 134 use a waterfall step 135 to consume the potential energy of the water body, which can effectively reduce the flow rate of the water body in the ditch and prevent the water body in the ditch from overflowing at the bend of the gutter 13. The outer wall of the gutter 13 (water retaining wall 5) adopts an eagle beak structure (waterproof protrusion 51) to prevent the high-speed water flow falling from the side wall of the second cylindrical section 12 from eroding above the water retaining wall 5. A waterproof layer 8 is provided inside the gutter 13 to prevent rainwater from eroding the concrete protective layer on the top surface of the first cylindrical section 11.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A chimney waist drainage structure, characterized in that: include: A chimney barrel (1) comprises a first barrel section (11) and a second barrel section (12) arranged on the top surface of the first barrel section (11); along the radial direction of the chimney barrel (1), the outer side surface of the second barrel section (12) is located between the outer side surface and the inner side surface of the first barrel section (11); a gutter (13) is provided on the area of ​​the top surface of the first barrel section (11) exposed from the second barrel section (12), and the gutter (13) extends along the circumference of the chimney barrel (1); the gutter (13) comprises a first gutter (131), a second gutter (132), a third gutter (133) and a fourth gutter (134), and the first gutter (131) and the second gutter (132) are relatively arranged on both sides of the chimney barrel (1); along the height direction of the chimney barrel (1), the first gutter (131) is located above the second gutter (132); the third gutter (133) The first end of the first gutter (131) is connected to the first end of the second gutter (132), and the fourth gutter (134) is connected to the second end of the first gutter (131) and the second end of the second gutter (132); a first water-stopping ridge (1331) is provided in the middle of the extending direction of the third gutter (133), and the first water-stopping ridge (1331) divides the third gutter (133) into a zone close to the first gutter (131). The third gutter upper section (1332) and the third gutter lower section (1333) close to the second gutter (132) are provided with a second water-stopping ridge (1341) in the middle of the fourth gutter (134) in the extending direction. The second water-stopping ridge (1341) divides the fourth gutter (134) into a fourth gutter upper section (1342) close to the first gutter (131) and a fourth gutter lower section (1343) close to the second gutter (132); A downpipe (2) extends in the height direction of the chimney barrel (1), and an end of the third gutter upper section (1332) close to the first water-stopping ridge (1331), an end of the fourth gutter upper section (1342) close to the second water-stopping ridge (1341), an end of the second gutter (132) close to the third gutter (133), and an end of the second gutter (132) close to the fourth gutter (134) are respectively connected to the downpipe (2).

2. The chimney waist drainage structure according to claim 1, characterized in that: The first gutter (131) comprises a first gutter left section (1311) and a first gutter right section (1312); the first end of the first gutter left section (1311) is connected to the first end of the first gutter right section (1312); the second end of the first gutter left section (1311) is connected to the third gutter upper section (1332); the second end of the first gutter right section (1312) is connected to the fourth gutter upper section (1342); the first gutter left section (1311) is arranged to be tilted downward at a first slope from the first end to the second end; and the first gutter right section (1312) is arranged to be tilted downward at the first slope from the first end to the second end; The second gutter (132) includes a second gutter left section (1321) and a second gutter right section (1322), wherein the first end of the second gutter left section (1321) is connected to the first end of the second gutter right section (1322), the second end of the second gutter left section (1321) is connected to the third gutter lower section (1333), and the second end of the second gutter right section (1322) is connected to the fourth gutter lower section (1343), the second gutter left section (1321) is arranged to be inclined downward at a first slope from the first end to the second end, and the second gutter right section (1322) is arranged to be inclined downward at the first slope from the first end to the second end.

3. The chimney waist drainage structure according to claim 2, characterized in that: The utility model also includes a water diversion pipe (3), one end of the third gutter upper section (1332) close to the first water stop anti-ridge (1331), one end of the fourth gutter upper section (1342) close to the second water stop anti-ridge (1341), one end of the second gutter left section (1321) close to the third gutter (133), and one end of the second gutter right section (1322) close to the fourth gutter (134) are all provided with drainage holes, the downpipe (2) is provided on the inner side of the chimney barrel (1), one end of the drainage hole extends into the gutter (13), and the other end extends to the inner side of the chimney barrel (1), the water diversion pipe (3) and the drainage hole are provided in a one-to-one correspondence, one end of the water diversion pipe (3) is connected to the corresponding drainage hole, and the other end is connected to the downpipe (2).

4. The chimney waist drainage structure according to claim 3, characterized in that: The drainage holes are all provided with side-entry rainwater hoppers (4), and the water pipe (3) is connected to one end of the side-entry rainwater hopper (4) extending to the inner side of the chimney barrel (1).

5. The chimney waist drainage structure according to claim 1, characterized in that: A plurality of waterfall steps (135) are provided in the third gutter upper section (1332), the third gutter lower section (1333), the fourth gutter upper section (1342) and the fourth gutter lower section (1343).

6. The chimney waist drainage structure according to any one of claims 1 to 5, characterized in that: The invention also includes a water retaining wall (5), wherein the water retaining wall (5) is provided on the top surface of the first cylinder section (11), the water retaining wall (5) is located outside the second cylinder section (12), and extends along the circumference of the first cylinder section (11), and the water retaining wall (5), the top surface of the first cylinder section (11) and the outer side surface of the second cylinder section (12) are arranged to form the gutter (13).

7. The chimney waist drainage structure according to claim 6, characterized in that: Also includes: A first water-stop steel plate (6), which is provided at the connection between the first barrel section (11) and the second barrel section (12), the upper portion of the first water-stop steel plate (6) extending into the first barrel section (11), and the lower portion extending into the second barrel section (12), and the first water-stop steel plate (6) extending along the circumference of the chimney barrel (1); A second water-stop steel plate (7) is provided at the connection between the water retaining wall (5) and the first barrel section (11); the upper portion of the second water-stop steel plate (7) extends into the water retaining wall (5), and the lower portion extends into the first barrel section (11); the second water-stop steel plate (7) extends along the circumference of the chimney barrel (1).

8. The chimney waist drainage structure according to claim 6, characterized in that: A waterproof layer (8) is provided at the bottom of the gutter (13).

9. The chimney waist drainage structure according to claim 8, characterized in that: A vertical wall flashing (9) is provided on the bottom of the outer side surface of the second cylindrical section (12) and on the side surface of the retaining wall (5) facing the gutter (13).

10. The chimney waist drainage structure according to claim 8, characterized in that: A waterproof protrusion (51) is provided on the side of the water retaining wall (5) facing the gutter (13) in a direction close to the second cylindrical section (12). The waterproof protrusion (51) is arranged on the top of the water retaining wall (5) and extends along the extension direction of the water retaining wall (5).

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