A hydrocyclone separator for rainwater runoff pollution control

Abstract

This invention discloses a hydrocyclone separation device for treating stormwater runoff pollution, relating to the field of wastewater treatment equipment. It includes a first hydrocyclone separator, a second hydrocyclone separator, and a third hydrocyclone separator. An inlet pipe is connected to one side of the first hydrocyclone separator, and the inlet pipe is inserted into the first hydrocyclone separator at a certain angle. A first outlet is provided at the top of the first hydrocyclone separator, and a connecting pipe is provided on the side of the first outlet near the second hydrocyclone separator. This invention allows liquid to enter the first hydrocyclone separator at high speed. Based on the principle of centrifugal force, heavier impurities are thrown to the inner wall and settle, while lighter impurities are driven by pressure to converge towards the center and are output upwards. Medium-weight impurities are deposited in the lower section of the cyclone and captured by the fifth outlet. Then, through precise multi-layer separation of impurities in the second and third hydrocyclone separators, the separation effect is effectively improved, and different types of impurities are specifically treated.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment, specifically a hydrocyclone separation device for treating rainwater runoff pollution. Background Technology

[0002] In today's society, with the acceleration of urbanization, the problem of stormwater runoff pollution is becoming increasingly serious. A large amount of untreated stormwater runoff carries various pollutants, such as solid particles and chemicals, and is directly discharged into natural water bodies, causing great damage to the ecological environment. The protection and rational use of water resources has become a global focus, and the development of efficient stormwater runoff pollution control technologies is urgently needed.

[0003] Currently, there are various methods for controlling stormwater runoff pollution. Among them, hydrocyclone separation technology is widely used due to its advantages such as simple structure and high separation efficiency. Common hydrocyclone separation devices can achieve preliminary separation of pollutants in stormwater runoff to a certain extent.

[0004] The basic steps of traditional hydrocyclone separation technology are as follows: rainwater runoff containing pollutants is introduced into a hydrocyclone at a certain angle through a pipe. Fluid containing solid particles enters the hydrocyclone tangentially at a certain pressure and velocity. Under the constraint of the cylindrical wall, the fluid begins to rotate, forming a high-speed rotating liquid flow. During the rotation, due to the centrifugal force, the denser solid particles or heavier phases are subjected to greater centrifugal force and are thrown towards the vicinity of the wall, gradually flowing downwards and eventually being discharged from the bottom sediment outlet as sediment products. Meanwhile, the less dense liquid or lighter phases flow towards the center and are carried out through the central overflow pipe by the liquid flowing towards the center.

[0005] However, existing hydrocyclone separators have difficulty balancing fluid velocity during the hydrocyclone separation process. If the velocity is too high, some liquid may be output without sufficient centrifugal filtration, while if the velocity is too low, the separation efficiency will be low. At the same time, existing technologies are not suitable for multi-layer sorting of liquids. Summary of the Invention

[0006] Based on this, the purpose of the present invention is to provide a hydrocyclone separation device for the treatment of rainwater runoff pollution, so as to solve the technical problems of difficulty in balancing fluid velocity and insufficient multi-layer separation capacity in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a hydrocyclone separation device for rainwater runoff pollution control, comprising a first hydrocyclone separator, a second hydrocyclone separator, and a third hydrocyclone separator. A feed pipe is connected to one side of the first hydrocyclone separator, and the feed pipe is inserted into the first hydrocyclone separator at a certain angle. A first liquid outlet is provided at the top of the first hydrocyclone separator. A connecting pipe is provided on the side of the first liquid outlet near the second hydrocyclone separator, and the connecting pipe connects to the second hydrocyclone separator. The second hydrocyclone separator is equipped with a particle adsorption device. A fifth liquid outlet is connected to the bottom of the first hydrocyclone separator, and the fifth liquid outlet is connected to the third hydrocyclone separator. A guide tank is connected to the bottom of the third hydrocyclone separator, and the guide tank is internally connected to the third hydrocyclone separator.

[0008] By adopting the above technical solution, heavier impurities in the water are quickly separated through the first cyclone separator, and the remaining impurities are then output separately. The remaining impurities are further separated through the second and third cyclone separators, ensuring the treatment effect of wastewater.

[0009] The present invention is further configured such that the particle adsorption device includes a mounting plate, the mounting plate has a plurality of slots, an adsorption plate is disposed in the slots, and the top of the mounting plate extends to the outside of the third cyclone separator and is connected to a limiting ring.

[0010] By adopting the above technical solution, when the liquid is in the third cyclone separator, it will enter between the mounting plates through the slots. Through the slots cut at a certain angle, the liquid can separate the liquid impurities in the mounting plates at a lower cyclone speed for a longer time, thereby achieving the effect of separating impurities.

[0011] The present invention is further configured such that the first cyclone separator is provided with a liquid inlet opening on the feed pipe, and a baffle is provided inside the first cyclone separator in conjunction with the liquid inlet opening.

[0012] By adopting the above technical solution, the speed and angle of liquid entering the separation tank are controlled by setting the angle of the baffle, thereby controlling the swirling flow inside the tank.

[0013] The present invention is further configured such that a first limiting plate is provided at the top of the first cyclone separator, a second limiting plate is provided at the bottom of the first cyclone separator, a fourth limiting plate is provided at the top of the second cyclone separator, a third limiting plate is provided at the top of the third cyclone separator, and a fifth limiting plate is provided at the bottom of the second cyclone separator.

[0014] By adopting the above technical solution, the two liquids with different flow directions generated by the swirling flow inside the barrel are separated by the limiting plate, ensuring that the impurities carried by the liquid are compatible and that the separation effect is good.

[0015] The present invention is further configured such that a second liquid outlet is provided at the center of the top of the second cyclone separator, a third liquid outlet is provided at the center of the bottom of the second cyclone separator, and a fourth liquid outlet is provided at the bottom of the guide tank.

[0016] By adopting the above technical solution, the impurities separated and deposited in the second cyclone separator are output through the third liquid outlet, and the excess liquid is output through the third liquid outlet.

[0017] The present invention is further configured such that the fifth liquid outlet is connected to the eccentric position at the top of the third cyclone separator, the center position at the bottom of the third cyclone separator is connected to the drain outlet, the bottom of the fifth liquid outlet is connected to a guide pipe, and the guide pipe is set at a certain angle inside the third cyclone separator.

[0018] By adopting the above technical solution, the liquid separated by the third cyclone separator is output through the drain port, and the centrifugally deposited impurities are output through the guide pipe.

[0019] The present invention is further configured such that a flow limiting device is provided in each of the first, second, third, fourth, and fifth liquid outlets. The flow limiting device includes a mounting box, and a plurality of top pressure limiting plates are arranged at a certain angle around the circumference of the mounting box. A rotating shaft is provided in the mounting box in conjunction with the top pressure limiting plates. A compression airbag is provided on the side of the top pressure limiting plate near the mounting box. A sixth limiting plate is provided at the center of the top of the mounting box. A plurality of partition plates are provided in the mounting box in conjunction with the plurality of top pressure limiting plates. A top pressure airbag is provided on the side of the partition plate near the top pressure limiting plate. The top pressure airbag in one limiting device is connected to the compression airbag in another limiting device.

[0020] By adopting the above technical solution, and by using a compression airbag in conjunction with a top pressure airbag, when the outlet pressure at one end of a separation tank is abnormal, the diameter of the flow limiting device at the other end will be compensated accordingly, thereby achieving pressure balance in the separation tank and ensuring the stability of the separation process.

[0021] The present invention is further configured such that a plurality of flexible partitions are provided between a plurality of top pressure limiting plates, and a diaphragm is provided at the bottom of the mounting box, wherein the diaphragm is connected to the top pressure limiting plates and the flexible partitions.

[0022] By adopting the above technical solution, the top pressure limiting plate is connected by a flexible partition, which also assists in the resetting of the top pressure limiting plate. The diaphragm isolates the installation box from the outside world, which also helps in the resetting of the top pressure limiting plate.

[0023] The present invention is further configured such that a first support frame is provided outside the first cyclone separator and the second cyclone separator, and a second support frame is provided outside the third cyclone separator. A connecting bracket is provided on the second support frame, and the connecting bracket is connected to the first support frame. A waste outlet is provided at the bottom of the first cyclone separator.

[0024] By adopting the above technical solution, the first cyclone separator, the second cyclone separator, and the third cyclone separator are supported by the first support frame and the second support frame. At the same time, after the connection is completed, the support frame makes it easier to move the entire device.

[0025] In summary, the present invention mainly has the following beneficial effects:

[0026] 1. This invention allows liquid to enter the first cyclone separator at high speed. Based on the principle of centrifugal force, heavier impurities are thrown to the inner wall and settle, while lighter impurities are driven by pressure to converge towards the center and then output upwards. Medium-weight impurities are deposited in the lower part of the cyclone and captured by the fifth liquid outlet. Then, the impurities are precisely sorted in multiple layers by the second and third cyclone separators, which effectively improves the separation effect and treats different types of impurities in a targeted manner.

[0027] 2. The present invention uses flow limiting devices equipped at each liquid outlet. When the pressure at one end increases, the top pressure limiting plate is squeezed. Through the linkage between the squeezing airbag and the top pressure airbag, the top pressure limiting plate of the other flow limiting device can be controlled to expand synchronously, ensuring that the pressure at the two output ends in the separation tank is always balanced, providing a strong guarantee for a stable separation process and high-quality separation effect. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a bottom view of the overall structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the internal structure of the first swirl tank of the present invention;

[0031] Figure 4 This is a schematic diagram of the internal structure of the second swirl tank of the present invention;

[0032] Figure 5 This is a schematic diagram of the interior of the second swirl chamber of the present invention from another perspective;

[0033] Figure 6 This is a schematic diagram of the internal structure of the third swirl tank of the present invention;

[0034] Figure 7 This is a schematic diagram of the filtration device structure of the present invention;

[0035] Figure 8 This is a schematic diagram of the external structure of the liquid outlet of the present invention;

[0036] Figure 9 Bottom view of the liquid outlet of the present invention;

[0037] Figure 10 This is a cross-sectional view of the internal structure of the liquid outlet of the present invention.

[0038] In the diagram: 1. First cyclone separator; 2. First outlet; 3. Feed pipe; 4. Limiting ring; 5. Second outlet; 6. Second cyclone separator; 7. First support frame; 8. Connecting pipe; 9. Connecting bracket; 10. Second support frame; 11. Third cyclone separator; 12. Guide tank; 13. Third outlet; 14. Fourth outlet; 15. Baffle; 16. Top pressure limiting plate; 17. First limiting plate; 18. Second limiting plate Plate; 19. Liquid inlet opening; 20. Fifth liquid outlet; 21. Drain outlet; 22. Third limiting plate; 23. Guide tube; 24. Fourth limiting plate; 25. Top pressure airbag; 26. Groove; 27. Mounting plate; 28. Mounting box; 29. ​​Fifth limiting plate; 30. Waste output port; 31. Adsorption plate; 32. Sixth limiting plate; 33. Partition plate; 34. Rotating shaft; 35. Extrusion airbag; 36. Diaphragm; 37. Flexible partition. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0040] The following describes an embodiment of the present invention based on its overall structure.

[0041] A hydrocyclone separator for treating stormwater runoff pollution, such as Figure 1-10As shown, the system includes a first cyclone separator 1, a second cyclone separator 6, and a third cyclone separator 11. A feed pipe 3 is connected to one side of the first cyclone separator 1. The feed pipe 3 is inserted into the first cyclone separator 1 at a certain angle, and the system connects to an external rainwater runoff pollution source that needs to be treated. A liquid inlet opening 19 is provided on the first cyclone separator 1 to align with the feed pipe 3. A baffle 15 is provided inside the first cyclone separator 1 to align with the liquid inlet opening 19. The baffle 15 guides the liquid flow, and the flow can be adjusted by changing the baffle. The 15° angle can adjust the initial velocity of the liquid entering the hydrocyclone. After the fluid containing solid particles enters the hydrocyclone tangentially with a certain pressure and flow rate, it begins to rotate under the constraint of the cylindrical wall, forming a high-speed rotating liquid flow. During the rotation, due to the centrifugal force, the denser solid particles or heavier phases are subjected to greater centrifugal force and are thrown towards the vicinity of the wall, gradually flowing downwards and finally discharged from the bottom sand outlet as sand products; while the less dense liquid or lighter phases flow towards the center and are carried out by the liquid flowing towards the center through the central overflow pipe.

[0042] In conjunction with this, the top of the first cyclone separator 1 is provided with a first liquid outlet 2, which corresponds to the aforementioned central overflow pipe. At the same time, the top of the first cyclone separator 1 is provided with a first limiting plate 17, and the bottom of the first cyclone separator 1 is provided with a second limiting plate 18. The first limiting plate 17 and the second limiting plate 18 are used to separate the two liquids with different flow directions in the cyclone separator, preventing the liquids from mixing again and resulting in poor separation effect.

[0043] However, in the actual separation process using a cyclone separator, the cyclone separator needs a high fluid velocity to support the centrifugal separation of the liquid, but it is also necessary to keep the liquid flow rate from being too fast. If the liquid enters the cyclone separator and is discharged through the pipeline without centrifugal filtration due to the excessive flow rate, the separation effect will be poor. Therefore, in this application, the liquid is subjected to additional treatment by a third cyclone separator 11 located at the bottom of the first cyclone separator 1 and a second cyclone separator 6 located on one side of the first cyclone separator 1, thereby solving the above problems.

[0044] Specifically, in actual use, after the liquid enters the first cyclone separator 1 at a high flow rate, the interior of the separator already has a centrifugal environment due to the swirling flow of the liquid. At this time, the heavier impurities will be directly thrown onto the inner wall of the first cyclone separator 1 and settle. The lighter impurities will be directly pressed to the center of the cyclone and output upward because they do not have time to be centrifuged. Meanwhile, the medium-weight impurities, which are between the lighter and heavier impurities, will be located in the lower part of the cyclone and thus deposit in the lower part, falling into the fifth outlet 20. The diameter of the fifth outlet 20 is smaller than that of the first outlet 2, ensuring that in the cyclone environment, the liquid in the center is preferentially squeezed upward, while the medium-weight impurities in the lower part are captured and output by the fifth outlet 20, thus achieving multi-layer sorting of impurities and targeted treatment.

[0045] Furthermore, a connecting pipe 8 is provided on the side of the first liquid outlet 2 near the second cyclone separator 6. The connecting pipe 8 is connected to the second cyclone separator 6 and is tangential to the second cyclone separator 6, ensuring a swirling environment is generated inside the second cyclone separator 6. Based on the above structure, it can be concluded that the liquid entering the second cyclone separator 6 through the connecting pipe 8 carries small mass impurities, i.e., impurities with strong suspension in the liquid. Therefore, the second cyclone separator 6 is equipped with a particle adsorption device, which includes a device for installing... Mounting plate 27 has several slots 26, and an adsorption plate 31 is disposed in each slot 26. The top of mounting plate 27 extends to the outside of the second cyclone separator 6 and is connected to a limiting ring 4. After the liquid enters the second cyclone separator 6, it will still generate swirling flow along the barrel wall. Unlike the above structure, when the pressure on the barrel wall increases due to centrifugal force, the liquid squeezed towards the center will have its flow direction disturbed by the slots 26 on mounting plate 27, flowing into the center of mounting plate 27 at a lower speed and passing through the adsorption plate 31. The adsorption process is effective, especially for very small suspended particles, which are adsorbed onto the surface of the adsorption plate 31. Several slots 26 are cut into the mounting plate 27 at the same angle, causing the liquid entering the mounting plate 27 to flow at a slower rate and generate swirling currents. A fifth limiting plate 29 is located at the bottom of the second swirling separator 6, and this fifth limiting plate 29 is fitted snugly against the mounting plate 27. In actual use, liquid continuously enters between the mounting plates 27, undergoing secondary separation. Because the amount of liquid entering decreases, the treatment of the liquid is improved. To further ensure the separation effect of the liquid by increasing the processing time, a fourth limiting plate 24 is provided at the top of the second cyclone separator 6, a second liquid outlet 5 is provided at the center of the top of the second cyclone separator 6, and a third liquid outlet 13 is provided at the center of the bottom of the second cyclone separator 6. The liquid separated by the second cyclone separator 6 is output through the second liquid outlet 5, and the sediment generated by the cyclone separation is output through the third liquid outlet 13. This separates the two streams of liquid between the mounting plates 27 to prevent the mixing of impurities.

[0046] Based on the above structure, the bottom of the first cyclone separator 1 is connected to a fifth liquid outlet 20, which is connected to the third cyclone separator 11. The bottom of the third cyclone separator 11 is connected to a guide tank 12, which is connected to the inside of the third cyclone separator 11. The bottom of the first cyclone separator 1 is provided with a second limiting plate 18, and the bottom of the guide tank 12 is provided with a fourth liquid outlet 14. The sediment in the third cyclone separator 11 is output through the fourth liquid outlet 14. The top of the third cyclone separator 11 is provided with a third limiting plate 22. The second limiting plate 18 and the fourth limiting plate 24 have the same function as the limiting plates mentioned above, mainly to separate the liquid in the third cyclone separator 11, prevent impurities from mixing, and reduce the separation effect.

[0047] The fifth outlet 20 is connected to the eccentric position at the top of the third cyclone separator 11. The center position at the bottom of the third cyclone separator 11 is connected to the drain outlet 21. The bottom of the fifth outlet 20 is connected to the guide pipe 23. The guide pipe 23 is set at a certain angle inside the third cyclone separator 11. According to the above structural description, the third cyclone separator 11 is mainly used for secondary screening of medium-quality impurities. Therefore, its main structure is similar to that of the first cyclone separator 1. The liquid is cut into the third cyclone separator 11 through the eccentrically set guide pipe 23, so that cyclone is generated inside the third cyclone separator 11, thereby separating medium-quality impurities. Under the action of centrifugal force, the high-quality impurities are thrown to the inner wall of the barrel and sink downwards. Inside the third cyclone separator 11, they are guided by the guide pipe 23 and output from the fourth outlet 14 set at the bottom of the guide pipe 23. Excess liquid is squeezed to the center of the cyclone and discharged upwards from the drain outlet 21.

[0048] Based on the above structure, in this application, the first liquid outlet 2, the second liquid outlet 5, the third liquid outlet 13, the fourth liquid outlet 14, and the fifth liquid outlet 20 are all equipped with flow limiting devices. These flow limiting devices mainly regulate the pressure at the connection point of the two connected cyclone separators, thereby ensuring the stability of the separation process and the quality of the separation. The flow limiting device includes a mounting box 28, within which several top pressure limiting plates 16 are arranged at a certain angle. A rotating shaft 34 is arranged within the mounting box 28 in conjunction with the top pressure limiting plates 16. A compression airbag 35 is arranged on the side of the top pressure limiting plate 16 near the mounting box 28. A sixth limiting plate 32 is arranged at the top center of the mounting box 28. Several partition plates 33 are arranged within the mounting box 28 in conjunction with the top pressure limiting plates 16. A top pressure airbag 25 is arranged on the side of the partition plate 33 near the top pressure limiting plate 16. The top pressure airbag 25 in one limiting device and the compression airbag 35 in another limiting device... 5. When liquid passes through the flow limiting device, if the pressure at one end increases, it will inevitably squeeze the top pressure limiting plate 16, causing it to expand. At this time, the top pressure limiting plate 16 will squeeze the compression airbag 35. The compression airbag 35 is squeezed, which drives the top pressure airbag 25 in the other flow limiting device to expand, thereby controlling the top pressure limiting plate 16 in the other flow limiting device to expand synchronously. Through this setting, the pressure balance at the two output ends in a separation tank is ensured. The initial expansion degree of a single port is set by the manufacturer and can be adjusted by adjusting the angle of the rotating shaft 34. For example, the flow limiting device in the first liquid outlet 2 in the first cyclone separation tank 1 should have a flow rate greater than that in the fifth liquid outlet 20 to ensure that medium-quality impurities are captured by the fifth liquid outlet 20. Therefore, the initial angle of the top pressure limiting plate 16 in the fifth liquid outlet 20 should be smaller than the initial angle of the top pressure limiting plate 16 in the first liquid outlet 2 flow limiting device, thereby ensuring that the pressure at both ends in the first cyclone separation tank 1 is equal, thus ensuring the separation effect of impurities.

[0049] In conjunction with this, several flexible partitions 37 are provided between several top pressure limiting plates 16, connecting several top pressure limiting plates 16. At the same time, when the top pressure limiting plates 16 expand, the top pressure limiting plates 16 remain connected. After the pressure is restored, the flexible partitions 37 drive the top pressure limiting plates 16 to reset. A diaphragm 36 is provided at the bottom of the mounting box 28. The diaphragm 36 is connected to the top pressure limiting plates 16 and the flexible partitions 37. It has the same function as the flexible partitions 37, mainly to isolate the mounting box 28 from the external environment, while limiting the top pressure limiting plates 16 and driving the top pressure limiting plates 16 to reset.

[0050] A first support frame 7 is provided outside the first cyclone separator 1 and the second cyclone separator 6, and a second support frame 10 is provided outside the third cyclone separator 11. A connecting bracket 9 is provided on the second support frame 10, and the connecting bracket 9 is connected to the first support frame 7. A waste outlet 30 is provided at the bottom of the first cyclone separator 1. The three separators are installed in the designated positions by the first support frame 7 and the second support frame 10, which also facilitates the direct assembly of the entire device.

[0051] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A hydrocyclone separation device for treating stormwater runoff pollution, comprising a first hydrocyclone separator (1), a second hydrocyclone separator (6), and a third hydrocyclone separator (11), wherein a feed pipe (3) is connected to one side of the first hydrocyclone separator (1), characterized in that: The feed pipe (3) is cut into the first cyclone separator (1) at a certain angle. The first cyclone separator (1) is provided with a first liquid outlet (2) at the top. A connecting pipe (8) is provided on the side of the first liquid outlet (2) near the second cyclone separator (6). The connecting pipe (8) is connected to the second cyclone separator (6). The second cyclone separator (6) is provided with a particle adsorption device. The bottom of the first cyclone separator (1) is connected to a fifth liquid outlet (20). The fifth liquid outlet (20) is connected to the third cyclone separator (6). 11) Connection, a second liquid outlet (5) is provided at the center of the top of the second cyclone separator (6), and a guide tank (12) is connected to the bottom of the third cyclone separator (11), the guide tank (12) is connected to the inside of the third cyclone separator (11); a third liquid outlet (13) is provided at the center of the bottom of the second cyclone separator (6), and a fourth liquid outlet (14) is provided at the bottom of the guide tank (12); the first liquid outlet (2), the second liquid outlet (5), the third liquid outlet (13), and the fourth liquid outlet ( 14) and the fifth outlet (20) are both equipped with flow limiting devices. The flow limiting devices include a mounting box (28). Several top pressure limiting plates (16) are arranged at a certain angle around the inside of the mounting box (28). A rotating shaft (34) is arranged inside the mounting box (28) in conjunction with the top pressure limiting plates (16). A compression airbag (35) is arranged on the side of the top pressure limiting plate (16) near the mounting box (28). A sixth limiting plate (32) is arranged at the center of the top of the mounting box (28). The inside of the mounting box (28) A plurality of partition plates (33) are provided in conjunction with a plurality of top pressure limiting plates (16). A top pressure airbag (25) is provided on the side of the partition plate (33) near the top pressure limiting plate (16). The top pressure airbag (25) in one limiting device is connected to the compression airbag (35) in another limiting device. A plurality of flexible partitions (37) are provided between the plurality of top pressure limiting plates (16). A diaphragm (36) is provided at the bottom of the mounting box (28). The diaphragm (36) is connected to the top pressure limiting plate (16) and the flexible partition (37).

2. The hydrocyclone separator for rainwater runoff pollution control according to claim 1, characterized in that: The particle adsorption device includes a mounting plate (27), on which a plurality of slots (26) are provided, and an adsorption plate (31) is provided in the slots (26). The top of the mounting plate (27) extends to the outside of the third cyclone separator (11) and is connected to a limiting ring (4).

3. The hydrocyclone separator for rainwater runoff pollution control according to claim 1, characterized in that: The first cyclone separator (1) is provided with a liquid inlet opening (19) in conjunction with the feed pipe (3), and a baffle (15) is provided inside the first cyclone separator (1) in conjunction with the liquid inlet opening (19).

4. The hydrocyclone separator for rainwater runoff pollution control according to claim 1, characterized in that: The first cyclone separator (1) is provided with a first limiting plate (17) at the top, the first cyclone separator (1) is provided with a second limiting plate (18) at the bottom, the second cyclone separator (6) is provided with a fourth limiting plate (24) at the top, the third cyclone separator (11) is provided with a third limiting plate (22) at the top, and the second cyclone separator (6) is provided with a fifth limiting plate (29) at the bottom.

5. A hydrocyclone separator for rainwater runoff pollution control according to claim 1, characterized in that: The fifth outlet (20) is connected to the top eccentric position of the third cyclone separator (11), the bottom center position of the third cyclone separator (11) is connected to the drain outlet (21), the bottom of the fifth outlet (20) is connected to the guide pipe (23), and the guide pipe (23) is set at a certain angle inside the third cyclone separator (11).

6. A hydrocyclone separator for rainwater runoff pollution control according to claim 1, characterized in that: A first support frame (7) is provided outside the first cyclone separator (1) and the second cyclone separator (6). A second support frame (10) is provided outside the third cyclone separator (11). A connecting bracket (9) is provided on the second support frame (10). The connecting bracket (9) is connected to the first support frame (7). A waste outlet (30) is provided at the bottom of the first cyclone separator (1).

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