Rectification type reinforced swirler for building drainage vertical pipe

Abstract

The invention provides a rectification type reinforced cyclone for a building drainage vertical pipe. The rectifying type reinforced cyclone is characterized in that a groove type spiral guide vane (6) for rectifying water flow of a vertical pipe and water flow of a transverse branch pipe is arranged on the inner wall of the cone section (5), and an upper curved surface guide vane (3) for guiding the water flow of the upper vertical pipe to deflect and flow into the groove type spiral guide vane (6) for rectification is further arranged below the upper vertical pipe connector (1). Compared with a traditional reinforced swirler, the innovative design of the rectification structure of the rectification type reinforced swirler not only can change the water flow direction and reduce the water flow speed through the guide vanes (3) and (6), but also can rectify the flowing water flow through the groove type spiral guide vanes (6) when the water flow of a vertical pipe and the water flow of a transverse branch pipe flow through the rectification type reinforced swirler, so that the flow rate of the water flow is reduced. Therefore, a spiral water flow form which is more favorable for improving the drainage capacity of the drainage vertical pipe is really formed.

Description

Technical Field

[0001] The invention relates to the technical field of building drainage system engineering, and in particular to a reinforced cyclone with a new structure for building drainage. Background Art

[0002] When the building's domestic drainage riser is draining, the water flow in the pipe is a gas-liquid two-phase gravity flow state. The water flows downward according to gravity and carries the airflow downward at the same time. The problem that the drainage riser needs to solve is to ensure that the drainage riser of the same caliber has a larger drainage flow rate while ensuring that the water seal of the drainage system is not damaged, so that under a larger drainage capacity (drainage flow rate), the water trap on the drainage branch pipe of the residential bathroom and kitchen or the water trap in the floor drain will not return odor due to water seal damage, ensuring residential hygiene and safety. The key to preventing water seal damage is to ensure that within the drainage riser within the maximum possible drainage capacity (drainage flow rate), the air flow pressure fluctuation value that causes water seal splashing or suction loss in the pipe must be controlled within the specified range (CJJ / T 245-2016 "Residential Living Drainage System Riser Drainage Capacity Test Standard" stipulates ±400Pa), so as to control the water seal loss of the water trap or floor drain trap within 25mm.

[0003] As shown in Figures 1(a) and 1(b), when the drainage riser A1 drains water downward under the gravity flow state, it presents a gas-liquid two-phase flow state, that is, the water flow carries the air downward, and the water flow flows downward along the pipe wall in the form of wall-attached water flow A2, and the air flow A3 flows in the center of the pipe. As the drainage flow rate increases or the water flow pattern in the riser changes, a water plug flow A4 may even be formed, causing the air flow channel in the center of the pipe to become smaller or blocked, which will cause the pressure fluctuation of the drainage pipe system to increase. The water seal on the drainage cross branch pipe above the ventilation obstruction part of the drainage riser will experience positive pressure (high pressure area) splashing loss, and the water seal on the drainage cross branch pipe below the ventilation obstruction part of the drainage riser will experience negative pressure (low pressure area) suction loss, making the water seal protection function of the water trap invalid, and harmful gases in the pipe enter the room. Therefore, when designing the drainage riser and pipe fittings of the building's domestic drainage system, it should be ensured that the center of the water flow pattern formed at a larger drainage flow rate when the drainage riser is draining water has a sufficient hollow ventilation channel cross-sectional area and a lower falling flow rate, so as to reduce the pressure fluctuation amplitude in the riser at a larger drainage flow rate, reduce water seal loss, and ensure that the drainage system is safe, hygienic and does not return odor.

[0004] As shown in Figure 2(a) and Figure 2(b), the drainage riser B1 and drainage horizontal branch pipe B2 of the traditional drainage system are connected by a 90° water-following tee B3 or a 45° water-following tee B4. When the water flow B6 of the horizontal branch pipe flows into the drainage riser B1, a tongue-shaped water flow B5, commonly known as a "water tongue", will be formed at the tee pipe fitting. This water flow pattern will partially or completely close the ventilation channel in the center of the drainage riser, causing a sharp increase in pressure fluctuations in the pipe and damage to the water seal. The drainage capacity of the DN100 single-riser drainage system with top ventilation connected by a 90° water-following tee B3 or a 45° water-following tee B4 in the traditional drainage system riser is only 3.5 to 4 liters per second.

[0005] To solve the above problems, a cyclone can be used as a special pipe fitting for connecting the drainage riser and the drainage lateral branch in the building's domestic drainage system. The drainage lateral branch is used to receive sewage. The sewage passes through the drainage lateral branch and, under the action of the cyclone, swirls along the pipe fitting into the drainage riser, forming a stable hollow vortex. The middle space of the vortex is used for ventilation, thereby ensuring stable air pressure in the pipeline, large drainage flow and low noise.

[0006] The prior art generally adopts a cyclone structure similar to the following structure, such as the Chinese utility model patent with application number: 201720006605.0, entitled: "A new type of cyclone for building drainage", which discloses a cyclone structure, see Figure 3 The cyclone includes a shock-absorbing bracket C1, a three-layer noise reduction elbow C2, a horizontal and direct current side pipe C3, a double-layer noise reduction cyclone cone pipe C4, a drainage riser water inlet pipe C5, a double-layer noise reduction enhanced cyclone expansion section C6, a guide inlet C7, a guide vane C8, a drainage riser down pipe C9, and a body C10. The guide inlet C7 of the horizontal and direct current side pipe C3 is connected to the inside of the double-layer noise reduction enhanced cyclone expansion section C6 to form a tangential water inlet. A double-layer noise reduction cyclone cone pipe C4 is arranged at the bottom of the double-layer noise reduction enhanced cyclone expansion section C6. Multiple guide vanes C8 are evenly arranged inside the double-layer noise reduction cyclone cone pipe C4. The built-in guide vanes C8 improve the drainage flow capacity and reduce the risk of water seal damage.

[0007] However, the above-mentioned prior art solution has the following defects: when the vertical pipe water flows through the cyclone, the guide vanes in the cyclone can only play the role of reducing the speed of the vertical pipe water flow, and cannot rectify to form a spiral water flow. When the upper vertical pipe water flow and the horizontal direct current side pipe tangential water inlet rotating water flow flow through the enhanced cyclone at the same time, although the horizontal direct current side pipe can form a tangential water inlet rotating water flow, the vertical pipe water flow will destroy the tangential water inlet rotating water flow form of the horizontal direct current side pipe, making it impossible to effectively integrate the two water flows into a more favorable spiral wall-attached water flow. At the same time, when the rapidly falling vertical pipe water flow encounters multiple guide vanes evenly arranged inside the double-layer noise reduction cyclone cone tube, it will splash down to produce multiple water flows offset to the center of the enhanced cyclone, which not only reduces the cross-sectional area of ​​the ventilation channel, but also the splashing, collision and splashing of multiple water flows will cause the air flowing in the tube to contain more water foam, making the density of this mixed gas containing water foam larger. The result of this reduction in the cross-sectional area of ​​the ventilation channel and the increase in the density of the mixed gas is an increase in the ventilation resistance of the drainage riser, which in turn increases the pressure fluctuation amplitude in the drainage riser, increasing the risk of water seal damage and toilet odor. The greater the drainage flow, the greater the pressure fluctuation amplitude, and the greater the risk of water seal damage. Summary of the invention

[0008] The technical problem to be solved by the present invention is: to overcome the defects of the above-mentioned prior art and provide a rectifying and enhanced cyclone for a building drainage riser. When the riser water flow and the branch pipe water flow flow through the rectifying and enhanced cyclone, the flowing water flow can be rectified to form a spiral water flow shape which is more beneficial to improving the drainage capacity of the drainage riser.

[0009] In order to achieve the above technical objectives, the present invention provides the following technical solutions:

[0010] A rectifying and enhanced cyclone for building drainage risers, wherein the rectifying and enhanced cyclone body comprises a hollow expansion section 4 and a cone section 5; a riser interface is provided on the upper portion of the expansion section 4 of the rectifying and enhanced cyclone for connecting to the drainage riser, and a transverse branch interface of a tangential water inlet structure is provided on the side of the expansion section of the rectifying and enhanced cyclone for connecting to the drainage transverse branch diversion inlet to form tangential water inlet; the characteristic is that: the rectifying and enhanced cyclone is provided with a grooved spiral guide blade 6 on the inner wall of the cone section 5 for rectifying the riser water flow and the transverse branch water flow, and an upper curved guide blade 3 is further provided below the upper riser interface 1 for guiding the upper riser water flow to be deflected and flow into the grooved spiral guide blade 6 for rectification.

[0011] Preferably, the grooved spiral guide blade 6 is a channel-shaped structure, which is composed of a groove wall 602 and a groove bottom plate 601 . The groove bottom plate 601 is attached to the inner wall of the cone section 5 and presents a spiral surface.

[0012] Preferably, the starting point of the grooved spiral guide blade 6 is located at an angle θ° with the axis of the tangential water inlet branch pipe interface 2, and the range of θ° is 30° to 35°; the grooved spiral guide blade 6 rotates 100° to 150° counterclockwise downward along the spiral with a spiral rise angle of 45° to 55°.

[0013] Preferably, the angle α° between the groove wall 602 and the groove bottom plate 601 is in the range of 90° to 120°.

[0014] Preferably, the height H of the groove along the wall 602 ranges from 15 mm to 25 mm.

[0015] Preferably, the widest dimension L of the grooved spiral guide vane 6 is not less than half of the inner diameter of the expansion section 4 .

[0016] Furthermore, a rounded transition is adopted between the groove wall 602 and the groove bottom plate 601, and the radius R' of the transition rounded corner is in the range of 15 mm to 25 mm.

[0017] Preferably, the thickness δ of the grooved spiral guide blade 6 ranges from 4.5 mm to 7 mm.

[0018] The upper curved guide vane 3 is a curved structure in the shape of a curved tube, the opening of the curved tube faces the grooved spiral guide vane 6, the curvature radius R1 of the curved tube is not less than 1.2 times the radius of the riser body and not more than 2 times the radius of the riser body; the deflection angle θ between the opening of the curved tube and the horizontal plane is in the range of 30° to 45°.

[0019] Preferably, the angle γ° between the bend axis of the upper curved guide vane 3 and the axis of the tangential water inlet lateral branch pipe interface 2 is in the range of 45° to 70°.

[0020] Furthermore, the tangential water inlet structure of the lateral branch pipe interface 2 of the rectifier-type enhanced cyclone includes a curved pipe body connected to the expansion section 4 and an interface connected to the drainage lateral branch pipe. The curved pipe body of the lateral branch pipe interface 2 is tangentially connected to the outer circle of the expansion section 4 and is connected downward at 45° as a whole. The curvature radius R of the curved pipe body is not less than 1.2 times the radius of the riser pipe body and not more than 2 times the radius of the riser pipe body.

[0021] The expansion section 4 of the rectifying enhanced cyclone is a hollow cylindrical structure, and its diameter is larger than the diameter of the connected drainage riser and not larger than 1.5 times the diameter of the drainage riser.

[0022] The cone section 5 of the rectifying enhanced cyclone is a hollow cone structure transitioning between the expansion section 4 and the lower riser interface 7, and the cone angle β° of the cone section ranges from 10° to 15°.

[0023] The beneficial effects of the present invention are:

[0024] Traditional enhanced cyclones use inclined flat guide vanes, and the water flowing down from the upper vertical pipe cannot form a rotating wall-attached water flow on the flat guide vanes. The rectifying enhanced cyclone for building drainage vertical pipes of the present invention is different from the traditional cyclone structure. Whether the water flow from the upper vertical pipe and the water flow from the horizontal branch pipe enter the rectifying enhanced cyclone of the present invention simultaneously or separately, they can be rectified by the grooved spiral guide vanes to form a spiral wall-attached water flow, which makes the water flow morphology change qualitatively, avoids the drift of splashing water foam to the center of the cyclone, expands the cyclone ventilation channel, and reduces the ventilation resistance and the pressure fluctuation amplitude in the pipe. Through the reasonable coordination of the positions of various structural parts, the spiral wall-attached water flow morphology formed by the rectification of the rectifier-type enhanced cyclone further reduces the water flow falling speed and the pressure fluctuation amplitude in the pipe, and the rotating centrifugal effect of the spiral water flow can increase the wall-attached water film thickness at a lower water flow falling speed, thereby improving the vertical pipe drainage capacity. While reducing the pressure fluctuation amplitude, it greatly improves the drainage capacity of the drainage system (the drainage capacity is 20% to 30% higher than that of the traditional enhanced cyclone), eliminating the problem of odor return in residential bathrooms. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] Figure 1(a) is a schematic diagram of water flow attached to the wall of a drainage riser;

[0027] Figure 1(b) is a schematic diagram of water plug flow in a drainage riser;

[0028] Explanation of the reference numerals in the figures: A1, drainage riser, A2, wall-attached water flow, A3, air flow, A4, water plug flow.

[0029] Figure 2(a) is a schematic diagram of the water flow pattern of the drainage riser of the traditional drainage system using a 90° downstream tee;

[0030] Figure 2(b) is a schematic diagram of the water flow pattern of the drainage riser of the traditional drainage system using a 45° downstream tee;

[0031] Explanation of the reference numerals in the figures: B1, drainage vertical pipe, B2, drainage horizontal branch pipe, B3, 90° downstream tee, B4, 45° downstream tee.

[0032] Figure 3 It is a schematic diagram of a cyclone structure disclosed in the prior art;

[0033] Explanation of the reference numerals in the figure: C1, shock-absorbing bracket, C2, three-layer noise reduction elbow, C3, horizontal direct current side pipe, C4, double-layer noise reduction swirl cone pipe, C5, drainage riser inlet pipe, C6, double-layer noise reduction enhanced swirl expansion section, C7, diversion inlet, C8, guide blade, C9, drainage riser downpipe, C10, device body.

[0034] Figure 4 This is a schematic diagram of the structure of a rectifier-type enhanced cyclone according to a preferred embodiment of the present invention;

[0035] Figure 5(a) shows Figure 4 Top view of the illustrated embodiment

[0036] Figure 5(b) shows Figure 4 Right side view of the illustrated embodiment

[0037] FIG. 5( c ) is a cross-sectional view taken along line AA of the embodiment shown in FIG. 5( b )

[0038] FIG. 5( d ) is a BB cross-sectional view of the embodiment shown in FIG. 5( b )

[0039] FIG. 5( e ) is a CC cross-sectional view of the embodiment shown in FIG. 5( b )

[0040] Figure 6(a) is a schematic diagram of the water flow pattern in Figure 5(c)

[0041] Figure 6(b) is a schematic diagram of the water flow pattern in Figure 5(a)

[0042] Figure 6(c) is a schematic diagram of the water flow pattern in Figure 5(e)

[0043] Figure 7(a) is an enlarged schematic diagram of Figure 5(c)

[0044] Figure 7(b) shows Figure 4 Cross-sectional view of the grooved spiral guide vane of the embodiment shown

[0045] Figure 7(c) is an enlarged schematic diagram of Figure 5(a)

[0046] Figure 8(a) is one of the exploded views of the rectifier enhanced cyclone

[0047] Figure 8(b) is the second exploded view of the rectifier enhanced cyclone

[0048] Figure 9(a) is a front view of the integrated structure of the upper riser interface and the upper curved guide vane

[0049] FIG9(b) is a cross-sectional view of the structure of FIG9(a)

[0050] FIG9(c) is a three-dimensional view of the structure of FIG9(a)

[0051] Description of reference numerals:

[0052] 1—upper riser interface; 2—tangential water inlet branch interface; 3—upper curved guide vane; 4—capacity expansion section; 5—cone section; 6—grooved spiral guide vane; 601—spiral curved groove bottom plate; 602—groove wall; 7—lower riser interface.

[0053] W1—deflected water flow guided by the upper curved guide vane; W2—tangential water inlet rotating water flow; W3—spiral wall-attached water flow rectified by the grooved spiral guide vane. DETAILED DESCRIPTION

[0054] like Figure 4 As shown, a rectifying enhanced cyclone for building drainage riser of the present invention is composed of an upper riser interface 1, a tangential water inlet lateral branch interface 2, an upper curved guide blade 3, an expansion section 4, a cone section 5, a grooved spiral guide blade 6 and a lower riser interface 7. It adopts a combined structure of a hollow expansion section 4 and a cone section 5, and the lateral branch interface adopts a tangential water inlet lateral branch interface 2 structure. An upper curved guide blade 3 for guiding the direction of the riser water flow is provided below the upper riser interface 1, and a grooved spiral guide blade 6 for rectifying the riser water flow and the lateral branch water flow is provided on the inner wall of the cone section 5. As shown in FIG6(a) , the innovative design of the rectifying structure of the rectifying enhanced cyclone can change the direction of the water flow and reduce the water flow velocity through the guide blades 3 and 6 compared with the traditional enhanced cyclone. Moreover, when the vertical pipe water flow and the horizontal branch pipe water flow pass through the rectifying enhanced cyclone, the grooved spiral guide blades 6 can rectify the water flow passing through, so as to truly form a spiral water flow shape that is more beneficial to improving the drainage capacity of the drainage vertical pipe.

[0055] See also Figure 5(a) to Figure 5(e) :

[0056] The upper riser interface 1 can adopt a socket-type interface of different sizes according to the size of the pipe diameter, and can also adopt other interface forms.

[0057] Referring to Figures 8(a) and 8(b), in this embodiment, the upper curved guide vane 3 adopts a curved structure design of a curved tube shape and is an integrally formed structure with its upper riser interface, and is fixedly connected to other parts of the cyclone by bonding. As shown in Figures 9(a), 9(b), and 9(c), the opening of the curved tube faces the grooved spiral guide vane 6, the diameter of the curved tube is consistent with the diameter of the pipe material connected to the riser, and the radius of curvature of the curved tube R1 should be no less than 1.2 times the radius of the riser body and no more than 2 times the radius of the riser body. In this embodiment, R1 is preferably 1.5 times the radius of the riser body; the deflection angle θ between the opening of the curved tube and the horizontal plane ranges from 30° to 45°, and 37° is preferred in this example. The water flow of the riser can be smoothly guided into the grooved spiral guide vane. As shown in Figure 6(c), the angle γ between the bend axis of the upper curved guide blade 3 and the axis of the tangential water inlet branch pipe interface 2 ranges from 45° to 70°, and is preferably 65° in this embodiment, so as to guide the upper riser water flow to be deflected and flow into the grooved spiral guide blade 6 for rectification, and a spiral wall-attached water flow is formed after rectification by the grooved spiral guide blade. The final water flow shape is shown in Figure 6(b), in which W1 is the deflection direction of the riser water flow through the upper curved guide blade, and the deflected water flow is guided into the grooved spiral guide blade; W2 is the tangential water inlet rotating water flow; W3 is the spiral wall-attached water flow rectified by the grooved spiral guide blade.

[0058] The expansion section 4 of the rectifier-type enhanced cyclone is a hollow cylindrical structure with a wall thickness of 3.5mm to 6mm, preferably 5.5mm in this embodiment, and its diameter is usually larger than the diameter of the connected riser and not larger than 1.5 times the diameter of the riser. In this embodiment, its diameter is preferably 1.5 times the diameter of the riser. The rectifier-type enhanced cyclone adopts the structural design of the expansion section 4 to ensure that there is enough ventilation channel cross-sectional area at the intersection of the riser water flow and the horizontal branch water flow, so as to reduce ventilation resistance, reduce pressure fluctuations in the riser, and prevent water seal damage.

[0059] Referring to FIG. 7(a), the conical section 5 of the rectifier-type enhanced cyclone is a hollow conical structure transitioning between the expansion section 4 and the lower riser interface 7. The cone angle β° of the conical section ranges from 10° to 15°, and is preferably 12.5° in this embodiment. The tangential water inlet lateral branch interface 2 of the rectifier-type enhanced cyclone is used to connect the drainage lateral branch of the sanitary ware drainage. The tangential water inlet lateral branch interface 2 of the rectifier-type enhanced cyclone is composed of a curved pipe body connected to the expansion section 4 of the rectifier-type enhanced cyclone and a socket-type interface. The curved pipe body of the tangential water inlet lateral branch interface 2 is connected to the outer circle of the expansion section 4 of the rectifier-type enhanced cyclone tangentially and downward at 45° as a whole. The curvature radius R of the curved pipe body should be no less than 1.2 times the radius of the riser body and no more than 2 times the radius of the riser body. In this embodiment, R is preferably 1.5 times the radius of the riser body. The tangential water inlet lateral branch pipe interface 2 preferably uses a socket-type interface, but other interface forms can also be used.

[0060] Referring to FIG. 7(b), the cross-sectional view of the grooved spiral guide vane in FIG. 7(b) is a normal cross-sectional dimension view perpendicular to the spiral line of the guide vane spiral body. Different from the flat guide vane in the conventional enhanced cyclone, the grooved spiral guide vane 6 of the rectifier enhanced cyclone is a guide vane structure attached to the inner wall of the cone section, with a cross section in the shape of a ditch with a grooved wall 602, and a spiral grooved bottom plate 601 on the bottom surface of the ditch. This structure with a ditch-shaped cross section composed of a spiral grooved bottom plate 601 and a grooved wall 602 can well block the water flow and limit the water flow from drifting toward the center of the rectifier enhanced cyclone and prevent the ventilation channel from being reduced, ensuring that the central part of the rectifier enhanced cyclone still has a ventilation channel with a sufficiently large cross-sectional area at a larger drainage flow rate, and also reducing the ventilation resistance and the pressure fluctuation amplitude in the riser. The widest dimension L of the grooved spiral guide blade 6 should not be less than half of the inner diameter of the expansion section 4, but there is an upper limit requirement. The pipe fittings in the drainage riser should meet the ball-passing test requirements. The diameter of the test ball is two-thirds of the inner diameter of the riser, so it should be ensured that the ball with two-thirds of the inner diameter of the riser can pass through the rectifying enhanced cyclone. In this embodiment, L is preferably equal to half of the inner diameter of the expansion section 4. The height H of the groove along the wall 602 should be between 15mm and 25mm, and H is preferably 20mm in this embodiment. The angle α between the groove along the wall and the spiral groove bottom plate 601 should be between 90° and 120°, and 100° is preferred in this embodiment, and a smooth transition is adopted. The R′ fillet should be in the range of 15mm to 25mm, and R′ is preferably 18mm in this embodiment. The thickness δ of the grooved spiral guide blade 6 ranges from 4.5mm to 7mm, and 5.5mm is preferred in this embodiment.

[0061] Referring to FIG. 7(a) and FIG. 7(c), the starting point of the grooved spiral guide vane 6 is located at an angle θ° with the axis of the tangential water inlet transverse branch pipe interface 2, and the range of θ° is 30° to 35°, and 33° is preferred in this embodiment. The grooved spiral guide vane 6 rotates 100° to 150° (preferably 120°) in a spiral shape in a counterclockwise downward direction at a spiral angle of 45° to 55° (preferably 50° in this embodiment). Referring to the water flow morphology diagram of FIG. 6(c), the upper vertical pipe water flow and the horizontal branch pipe water flow fall into the grooved spiral guide vane 6 structure with a certain spiral angle and a smooth spiral surface, and contact with it smoothly, avoiding and reducing the phenomenon of water splashing caused by direct contact between the water flow in the traditional enhanced cyclone and the flat guide vane, reducing the water foam content of the air and the density of the mixed gas in the rectifying enhanced cyclone, and reducing the ventilation resistance and the pressure fluctuation amplitude in the vertical pipe.

[0062] The innovative structural design of the rectifier enhanced cyclone completely changes the water flow pattern of the enhanced cyclone. No matter the upper riser water flow and the lateral branch pipe water flow enter the rectifier enhanced cyclone simultaneously or separately, they will be rectified into spiral wall-attached water flow, so that the drainage capacity (drainage flow) of the drainage riser system using the rectifier enhanced cyclone is further improved, the pressure fluctuation is reduced, the water seal damage that may be caused by this is avoided, and the sanitary safety performance of the building drainage system is improved.

[0063] The implementation methods of the embodiments described above are only used to illustrate the present invention, and are not intended to limit the present invention. Any technician familiar with the technical field can make various modifications, changes or substitutions without departing from the technical scope disclosed by the present invention. Therefore, all equivalent and similar technical methods should be covered within the scope of patent protection of the present invention.

Claims

1. A rectifying type reinforced cyclone for a building drainage riser, the rectifying type reinforced cyclone body comprising a hollow expansion section (4) and a cone section (5); the expansion section (4) of the rectifying type reinforced cyclone is provided with a riser interface on the upper part for connecting to the drainage riser, and the expansion section of the rectifying type reinforced cyclone is provided with a lateral branch pipe interface of a tangential water inlet structure on the side part for connecting to the drainage lateral branch pipe diversion inlet to form tangential water inlet; characterized in that: The rectifying enhanced cyclone is provided with a grooved spiral guide vane (6) on the inner wall of the cone section (5) for rectifying the water flow in the vertical pipe and the water flow in the horizontal branch pipe, and an upper curved surface guide vane (3) is also provided below the upper vertical pipe interface (1) for guiding the water flow in the upper vertical pipe to be deflected and flow into the grooved spiral guide vane (6) for rectification.

2. A rectifying enhanced cyclone for building drainage riser according to claim 1, characterized in that: The starting point of the grooved spiral guide blade (6) is located at an angle θ° with the axis of the tangential water inlet lateral branch pipe interface (2), and the range of θ° is 30° to 35°; the grooved spiral guide blade (6) rotates 100° to 150° in a spiral shape downward counterclockwise at a spiral rise angle of 45° to 55°.

3. A rectifying enhanced cyclone for building drainage riser according to claim 2, characterized in that: The grooved spiral guide blade (6) is a channel-shaped structure, and is composed of a groove wall (602) and a groove bottom plate (601). The groove bottom plate (601) is attached to the inner wall of the cone section (5) and is in the form of a spiral curved surface.

4. A rectifying enhanced cyclone for building drainage riser according to claim 3, characterized in that: The included angle α° between the groove wall (602) and the groove bottom plate (601) is in the range of 90° to 120°.

5. A rectifying enhanced cyclone for building drainage riser according to claim 4, characterized in that: The height H of the groove along the wall (602) ranges from 15 mm to 25 mm.

6. A rectifying enhanced cyclone for building drainage riser according to claim 5, characterized in that: The dimension L at the widest part of the grooved spiral guide blade (6) is not less than half of the inner diameter of the expansion section (4).

7. A rectifying enhanced cyclone for building drainage riser according to claim 6, characterized in that: The thickness δ of the grooved spiral guide blade (6) ranges from 4.5 mm to 7 mm.

8. A rectifying enhanced cyclone for building drainage riser according to claim 7, characterized in that: A rounded transition is adopted between the groove wall (602) and the groove bottom plate (601), and the radius R' of the transition rounded corner is in the range of 15 mm to 25 mm.

9. A rectifying enhanced cyclone for building drainage riser according to claims 1 to 8, characterized in that: The upper curved guide blade (3) is a curved structure in the shape of a curved tube, the opening of the curved tube faces the grooved spiral guide blade (6), the curvature radius R1 of the curved tube is not less than 1.2 times the radius of the riser tube body and not more than 2 times the radius of the riser tube body; the deflection angle θ between the opening of the curved tube and the horizontal plane is in the range of 30° to 45°.

10. A rectifying enhanced cyclone for building drainage riser according to claim 9, characterized in that: The included angle γ° between the curved pipe axis of the curved pipe-shaped upper curved guide vane (3) and the axis of the tangential water inlet lateral branch pipe interface (2) is in the range of 45° to 70°.

11. A rectifying enhanced cyclone for building drainage riser according to claim 10, characterized in that: The tangential water inlet structure of the transverse branch pipe interface (2) of the rectifying enhanced cyclone comprises a curved pipe body connected to the expansion section (4) and an interface connected to the drainage transverse branch pipe, the curved pipe body of the transverse branch pipe interface (2) is connected to the outer circle of the expansion section (4) tangentially and downward at 45 degrees as a whole, and the curvature radius R of the curved pipe body is not less than 1.2 times the radius of the riser pipe body and not more than 2 times the radius of the riser pipe body.

12. A rectifying enhanced cyclone for building drainage riser according to claim 11, characterized in that: The expansion section (4) of the rectifying enhanced cyclone is a hollow cylindrical structure, the diameter of which is larger than the diameter of the connected drainage riser and not larger than 1.5 times the diameter of the drainage riser.

13. A rectifying enhanced cyclone for building drainage riser according to claim 12, characterized in that: The conical section (5) of the rectifying enhanced cyclone is a hollow conical structure at the transition between the expansion section (4) and the lower riser interface (7), and the cone angle β° of the conical section is in the range of 10° to 15°.

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