Initial rainwater rapid purification device based on reverse grating principle

Abstract

The invention relates to the technical field of water body cleaning, and particularly provides an initial rainwater rapid purification device based on a reverse grating principle, the initial rainwater rapid purification device comprises a main cylinder body, a water inlet pipe, a water outlet pipe, a cylinder cover and a water inlet cylinder, the water inlet pipe is communicated to the water inlet cylinder, water flow rotationally flows in the circumferential direction of the water inlet cylinder, and a water outlet cavity is formed between the water inlet cylinder and the main cylinder body; the inner diameter of the net cylinder is the same as that of the water inlet cylinder, the straight line where the opening direction of meshes in the side wall of the net cylinder is located is obliquely arranged along the horizontal plane and deviates from the central axis of the net cylinder, and the meshes enable the water flow rotating direction of the inner ring of the net cylinder to be opposite to the water flow rotating direction of the outer ring of the net cylinder. A sewage collecting barrel is fixed to the bottom of the water inlet barrel, when sundries rush to the mesh barrel along with water flow, the sundries larger than the diameter of meshes are directly blocked by the meshes, the sundries smaller than the diameter of the meshes collide with inlets of the meshes under the action of centrifugal force and are popped out of the meshes, and small sundries are filtered under the condition that the passing ability of the water flow is not affected.

Description

Technical Field

[0001] The invention relates to the technical field of water body cleaning, and in particular to an initial rainwater rapid purification device based on a reverse grid principle. Background Art

[0002] Rainwater is usually discharged directly into rivers through rainwater pipes, but there are various solid pollutants and garbage in rainwater, which can easily pollute rivers when discharged into rivers. The pollution of initial rainwater is more serious and cannot be discharged directly into water bodies. Most of the initial rainwater sewage interception devices can only simply intercept larger suspended matter in the initial rainwater. If a small mesh filter is replaced to intercept fine suspended matter, it will be difficult to maintain the drainage efficiency during rainwater discharge and it is easy to cause the filter to become clogged.

[0003] Patent document publication number CN221759548U discloses a rainwater purification and collection device for a river basin, comprising a main cylinder with an upper opening, a purification cylinder, the purification cylinder being detachably arranged in the main cylinder; a filter, detachably arranged at the opening of the main cylinder; the filter being located above the purification cylinder; and a collection pipe, which is arranged on both sides of the main cylinder for connecting with adjacent collection devices. By adding a filter and a purification cylinder to the main cylinder, the situation of mud blocking the pipe mouth can be prevented, thereby improving the rainwater purification efficiency. By arranging collection pipes on both sides of the main cylinder, multiple devices can be connected in parallel, thereby improving the collection efficiency of purified rainwater. By arranging a drainage pipe, the excess purified rainwater can be discharged. However, the patent still has some shortcomings: the capacity and mesh of the filter and the purification cylinder are too small, and they are easily blocked by larger debris, resulting in a small overall load of the device, which is difficult to adapt to the long-term large-flow rainwater filtration needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that the rainwater sewage interception device is difficult to intercept fine debris while maintaining the drainage volume, the present invention provides an initial rainwater rapid purification device based on the reverse grid principle to solve the above problem. The technical solution adopted by the present invention to solve its technical problems is: an initial rainwater rapid purification device based on the reverse grid principle, comprising a main cylinder body, water inlet pipes and water outlet pipes are arranged on both sides of the main cylinder body, a cylinder cover is arranged on the top of the main cylinder body, a water inlet cylinder is fixed to the inner circle of the main cylinder body, the water inlet pipe is connected to the water inlet cylinder along the tangent direction of the water inlet cylinder, water flows into the water inlet cylinder from the water inlet pipe and then rotates and flows along the circumferential direction of the water inlet cylinder, a water outlet cavity is formed between the water inlet cylinder and the main cylinder body, the water outlet cavity is connected to the water outlet pipe, the water inlet cylinder is fixed to the inner circle of the main cylinder body, the water inlet pipe is connected to the water inlet cylinder along the tangent direction of the water inlet cylinder, and the water flows into the water inlet cylinder from the water inlet pipe. A vertically arranged mesh cylinder is fixed at the bottom of the cylinder, and the inner diameter of the mesh cylinder is the same as the inner diameter of the water inlet cylinder. The straight line where the opening direction of the mesh holes on the side wall of the mesh cylinder is located is inclined along the horizontal plane and deviates from the central axis of the mesh cylinder. The mesh holes can make the water flow rotation direction of the inner circle of the mesh cylinder opposite to the water flow rotation direction of the outer circle of the mesh cylinder. A sewage collecting cylinder is fixed at the bottom of the water inlet cylinder, and a circular sealing plate is fixed on the top of the sewage collecting cylinder. The inner circle of the circular sealing plate is fixedly connected to the outer wall of the mesh cylinder, and the outer circle of the circular sealing plate is fixedly connected to the inner wall of the sewage collecting cylinder. Preferably, the opening direction of each mesh hole on the side wall of the mesh cylinder is perpendicular to the water flow direction at the corresponding position of the inner circle of the mesh cylinder.

[0005] Preferably, a diversion mechanism is also provided at the top of the water inlet cylinder, and the diversion mechanism includes an inverted frustum, the maximum diameter of the frustum is smaller than the inner diameter of the water inlet cylinder, the center of the frustum is coaxially rotatably connected to the cylinder cover by bolts, the height of the frustum is the same as the height of the water inlet cylinder and is located directly above the net cylinder.

[0006] Preferably, a plurality of blades are fixed at equal intervals on the side surface of the frustum, the blades are tangent to the conical surface of the frustum, and the rotation direction of the blades is the same as the rotation direction of the water flow in the inner circle of the mesh cylinder.

[0007] Preferably, an annular seat is fixed between the circular sealing plate and the mesh cylinder, the inner ring of the annular seat is detachably mounted with a rotating ring, an impeller is fixed at the center of the rotating ring, the edge of the impeller is fixedly connected to the inner wall of the rotating ring, a scraper group is fixed to the top of the rotating ring, and the scraper group is slidably connected to the inner wall of the mesh cylinder.

[0008] Preferably, a support ring is fixed on the top of the scraper assembly, and the outer wall of the support ring is slidably connected to the inner side of the top of the mesh cylinder.

[0009] Preferably, an anti-collision cone is fixed at the center of the impeller, and the anti-collision cone is made of rubber.

[0010] The beneficial effect of the present invention is that a mesh cylinder and a guide mechanism are provided, so that all water flows along the side wall of the water inlet cylinder, thereby improving the rotational power of the water flow in the water inlet cylinder. When the water flow contacts the blades, the water flow is further guided by the blades to the inner wall of the water inlet cylinder and flows in the same direction, thereby further improving the rotational power of the water flow. When debris rushes toward the mesh cylinder with the water flow, debris larger than the mesh diameter is directly blocked by the mesh and then falls into the sewage collecting cylinder below, while debris smaller than the mesh diameter will collide with the mesh inlet under the action of centrifugal force and be ejected from the mesh, resulting in difficulty for fine debris to enter the mesh and can only continue to move downward until it enters the sewage collecting cylinder below, thereby achieving filtering of fine debris. Since the actual diameter of the mesh is larger than the diameter of the fine debris, the fine debris can be filtered without affecting the water flow permeability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0012] Figure 1 It is a schematic diagram of the overall structure of an initial rainwater rapid purification device based on the reverse grid principle of the present invention; Figure 2 It is a structural schematic diagram of a water inlet cylinder of an initial rainwater rapid purification device based on the reverse grid principle of the present invention; Figure 3 It is a schematic structural diagram of blades of a device for rapid purification of initial rainwater based on the reverse grid principle of the present invention; Figure 4 It is a structural schematic diagram of a cone of an initial rainwater rapid purification device based on the reverse grid principle of the present invention; Figure 5 It is a structural schematic diagram of a circular sealing plate of an initial rainwater rapid purification device based on the reverse grid principle of the present invention; Figure 6 It is a structural schematic diagram of a scraper group of an initial rainwater rapid purification device based on the reverse grid principle of the present invention; Figure 7 It is a structural schematic diagram of a mesh cylinder of an initial rainwater rapid purification device based on the reverse grid principle of the present invention; Figure 8 yes Figure 7 Cross-sectional view at AA in the middle.

[0013] Figure numerals: 1. main cylinder; 2. water inlet pipe; 3. water outlet pipe; 4. cylinder cover; 5. water inlet cylinder; 6. mesh cylinder; 7. sewage collecting cylinder; 8. circular sealing plate; 9. frustum; 10. bolt; 11. blade; 12. annular seat; 13. rotating ring; 14. impeller; 15. scraper assembly; 16. support ring; 17. anti-collision cone. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0016] like Figures 1 to 8 As shown, the present invention provides an embodiment of an initial rainwater rapid purification device based on the reverse grid principle, including a main cylinder body 1, with a water inlet pipe 2 and a water outlet pipe 3 arranged on both sides of the main cylinder body 1, a cylinder cover 4 is arranged on the top of the main cylinder body 1, and a water inlet cylinder 5 is fixed to the inner circle of the main cylinder body 1. The water inlet pipe 2 is connected to the water inlet cylinder 5 along the tangential direction of the water inlet cylinder 5, and the water flows into the water inlet cylinder 5 from the water inlet pipe 2 and rotates along the circumferential direction of the water inlet cylinder 5.

[0017] A water outlet cavity is formed between the water inlet cylinder 5 and the main cylinder body 1, and the water outlet cavity is connected to the water outlet pipe 3. A vertically arranged net cylinder 6 is fixed at the bottom of the water inlet cylinder 5. The inner diameter of the net cylinder 6 is the same as the inner diameter of the water inlet cylinder 5. The straight line where the opening direction of the mesh holes on the side wall of the net cylinder 6 is located is inclined along the horizontal plane and deviates from the central axis of the net cylinder 6. In this embodiment, the opening direction of each mesh hole on the side wall of the net cylinder 6 is perpendicular to the water flow direction at the corresponding position of the inner circle of the net cylinder 6, so that the impact force caused by the water flow on the mesh hole when entering the mesh hole is greater, so as to flush and clean the inner wall of the mesh hole. The mesh hole can make the water flow rotation direction of the inner circle of the net cylinder 6 opposite to the water flow rotation direction of the outer circle of the net cylinder 6.

[0018] The principle of the opposite rotation directions of the water flow inside and outside the mesh tube 6 is as follows: after the rainwater flows along the water inlet pipe 2 to the water inlet tube 5, it changes from horizontal linear movement to rotating downward movement in the water inlet tube 5. When the rotating water flow contacts the mesh tube 6, the water flow will carry debris to the side wall of the mesh tube 6. Since the opening direction of the mesh is inclined, when the water flow enters the mesh, a part of the water flow will pass through the mesh and flow into the water outlet cavity outside the mesh tube 6, and finally flow out from the outlet pipe 3. When the water flow passes through the mesh, the water flow passing through the mesh is guided by the inclined mesh, thereby changing the direction of the water flow, that is, the water flow rotating in the inner circle of the mesh tube 6 can be converted into the water flow rotating in the opposite direction in the outer circle of the mesh tube 6 after passing through the mesh.

[0019] A dirt collecting cylinder 7 is fixed at the bottom of the water inlet cylinder 5 , a circular sealing plate 8 is fixed at the top of the dirt collecting cylinder 7 , the inner circle of the circular sealing plate 8 is fixedly connected to the outer wall of the net cylinder 6 , and the outer circle of the circular sealing plate 8 is fixedly connected to the inner wall of the dirt collecting cylinder 7 .

[0020] When debris rushes towards the mesh cylinder 6 with the water flow, debris larger than the mesh diameter is directly blocked by the mesh and falls into the dirt collecting cylinder 7 below, while debris smaller than the mesh diameter will collide with the entrance of the mesh under the action of centrifugal force and be ejected from the mesh, making it difficult for small debris to enter the mesh and can only continue to move downward until it enters the dirt collecting cylinder 7 below, thereby achieving the filtering of small debris. Since the actual diameter of the mesh is larger than the diameter of the small debris, the small debris can be filtered without affecting the water flow. Compared with the traditional filter, the mesh cylinder 6 with an inclined mesh in the present application has a higher filtering efficiency.

[0021] A flow diversion mechanism is also provided at the top of the water inlet cylinder 5, which includes an inverted frustum 9, the maximum diameter of the frustum 9 is smaller than the inner diameter of the water inlet cylinder 5, the center of the frustum 9 is coaxially rotatably connected to the cylinder cover 4 by a bolt 10, the height of the frustum 9 is the same as the height of the water inlet cylinder 5 and is located directly above the net cylinder 6, and a plurality of blades 11 are fixed at equal intervals on the side of the frustum 9, the blades 11 are tangent to the conical surface of the frustum 9, and the rotation direction of the blades 11 is the same as the rotation direction of the water flow in the inner circle of the net cylinder 6.

[0022] When the water flow in the water inlet pipe 2 enters the water inlet cylinder 5, part of the water flow will flow to the center of the water inlet cylinder 5, causing the rotating water flow to be disturbed. Therefore, in the present application, a cone 9 is set in the center of the water inlet cylinder 5, so that all the water flow can flow along the side wall of the water inlet cylinder 5, thereby improving the rotational power of the water flow in the water inlet cylinder 5. When the water flow contacts the blades 11, the blades 11 further guide it to the inner wall of the water inlet cylinder 5 and flow in the same direction, further improving the rotational power of the water flow.

[0023] An annular seat 12 is fixed between the circular sealing plate 8 and the mesh cylinder 6, and a rotating ring 13 is detachably installed on the inner ring of the annular seat 12. An impeller 14 is fixed at the center of the rotating ring 13. The edge of the impeller 14 is fixedly connected to the inner wall of the rotating ring 13, and a scraper group 15 is fixed to the top of the rotating ring 13. The scraper group 15 is slidably connected to the inner wall of the mesh cylinder 6. Water flows downward to impact the impeller 14 and then drives the impeller 14 to rotate. The rotation of the impeller 14 drives the scraper group 15 to rotate, thereby cleaning the inner wall of the mesh cylinder 6 to prevent debris from being adsorbed on the mesh cylinder 6 and causing the mesh cylinder 6 to be blocked.

[0024] A support ring 16 is fixed to the top of the scraper group 15, and the outer wall of the support ring 16 is slidably connected to the inner side of the top of the net tube 6. The upper and lower ends of the scraper group 15 are supported and fixed by the support ring 16 and the rotating ring 13 respectively to ensure that the scraper group 15 can remain stable when cutting and cleaning the inner wall of the net tube 6. At the same time, the support ring 16 can also provide support for the position of the upper end of the net tube 6 close to the water inlet pipe 2. Combined with the scraper group 15 arranged symmetrically around the center, the force balance of various parts of the net tube 6 can be maintained during the cleaning process of the net tube 6, preventing the net tube 6 from being deformed when the scraper scrapes off foreign matter adhering to the net tube 6.

[0025] An anti-collision cone 17 is fixed at the center of the impeller 14. The anti-collision cone 17 is made of rubber. On the one hand, the anti-collision cone 17 can reduce the impact of debris and water flow on the impeller 14. On the other hand, the conical surface of the anti-collision cone 17 makes it difficult for debris to stay, so that the debris can fall smoothly into the sewage collection barrel 7 below. This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above are only preferred implementation methods of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A rapid purification device for initial rainwater based on the reverse grid principle, comprising a main cylinder (1), with a water inlet pipe (2) and a water outlet pipe (3) being arranged on both sides of the main cylinder (1), characterized in that: A cylinder cover (4) is provided on the top of the main cylinder (1), a water inlet cylinder (5) is fixed to the inner ring of the main cylinder (1), the water inlet pipe (2) is connected to the water inlet cylinder (5) along the tangent direction of the water inlet cylinder (5), water flows into the water inlet cylinder (5) from the water inlet pipe (2) and then rotates and flows along the circumferential direction of the water inlet cylinder (5), a water outlet cavity is formed between the water inlet cylinder (5) and the main cylinder (1), the water outlet cavity is connected to the water outlet pipe (3), a vertically arranged net cylinder (6) is fixed to the bottom of the water inlet cylinder (5), and the inner diameter of the net cylinder (6) is the same as that of the water inlet cylinder ( The inner diameter of the mesh cylinder (5) is the same as that of the mesh cylinder (6), the straight line where the opening direction of the mesh holes on the side wall of the mesh cylinder (6) is located is inclined along the horizontal plane and deviates from the central axis of the mesh cylinder (6), the mesh holes can make the water flow rotation direction of the inner circle of the mesh cylinder (6) opposite to the water flow rotation direction of the outer circle of the mesh cylinder (6), a sewage collecting cylinder (7) is fixed at the bottom of the water inlet cylinder (5), a circular sealing plate (8) is fixed at the top of the sewage collecting cylinder (7), the inner circle of the circular sealing plate (8) is fixedly connected to the outer wall of the mesh cylinder (6), and the outer circle of the circular sealing plate (8) is fixedly connected to the inner wall of the sewage collecting cylinder (7).

2. The device for rapid purification of initial rainwater based on the reverse grid principle as claimed in claim 1, characterized in that: The opening direction of each mesh hole on the side wall of the net cylinder (6) is perpendicular to the water flow direction at the corresponding position of the inner circle of the net cylinder (6).

3. The device for rapid purification of initial rainwater based on the reverse grid principle as claimed in claim 1, characterized in that: A flow guide mechanism is also provided at the top of the water inlet cylinder (5), the flow guide mechanism comprising an inverted frustum (9), the maximum diameter of the frustum (9) being smaller than the inner diameter of the water inlet cylinder (5), the center of the frustum (9) being coaxially rotatably connected to the cylinder cover (4) via a bolt (10), the height of the frustum (9) being the same as that of the water inlet cylinder (5) and being located directly above the net cylinder (6).

4. The device for rapid purification of initial rainwater based on the reverse grid principle as claimed in claim 3, characterized in that: A plurality of blades (11) are fixed at equal intervals on the side surface of the frustum (9); the blades (11) are tangent to the conical surface of the frustum (9); and the rotation direction of the blades (11) is the same as the rotation direction of the water flow in the inner circle of the net cylinder (6).

5. The device for rapid purification of initial rainwater based on the reverse grid principle as claimed in claim 1, characterized in that: An annular seat (12) is fixed between the annular sealing plate (8) and the net cylinder (6); a rotating ring (13) is detachably mounted on the inner ring of the annular seat (12); an impeller (14) is fixed at the center of the rotating ring (13); the edge of the impeller (14) is fixedly connected to the inner wall of the rotating ring (13); a scraper group (15) is fixed to the top of the rotating ring (13); and the scraper group (15) is slidably connected to the inner wall of the net cylinder (6).

6. The device for rapid purification of initial rainwater based on the reverse grid principle as claimed in claim 5, characterized in that: A support ring (16) is fixed on the top of the scraper assembly (15), and the outer wall of the support ring (16) is slidably connected to the inner side of the top of the net cylinder (6).

7. The device for rapid purification of initial rainwater based on the reverse grid principle as claimed in claim 5, characterized in that: An anti-collision cone (17) is fixed at the center of the impeller (14), and the anti-collision cone (17) is made of rubber.

Images