CN112717493B - A pipe network runoff purification device based on the principle of cyclone sand settling - Google Patents

Abstract

The invention relates to a pipe network runoff purification device based on a rotational flow sand setting principle, and belongs to the technical field of sewage treatment. The device comprises a tank body, a water inlet pipe, a water outlet pipe, a guide plate, a support body, an energy dissipation grid and a sand collecting hopper, wherein the water inlet pipe is connected into the cylindrical tank body at a lower position along the tangential direction of the tank body, the water outlet pipe is connected out of the tank body at a higher position along the tangential direction of the tank body, and the outer edges of the water inlet pipe and the water outlet pipe are respectively tangent with the tank body; the axes of the water inlet pipe and the water outlet pipe are positioned on the same vertical plane; the upper edge of the opening of the water inlet pipe in the tank body is lower than the lower edge of the opening of the water outlet pipe, and a half-moon-shaped guide plate is arranged between the upper edge and the lower edge in the horizontal direction; the bottom of the tank body is provided with a support body, an energy dissipation grid is supported on the support body, and a sand collecting hopper is formed in the tank body space below the energy dissipation grid; the energy dissipation grating is a split type grating, and a complete circular grating is formed by a plurality of fan-shaped gratings. The invention effectively solves the defects of the existing rotational flow sand setting device of the drainage pipeline.

Description

A pipe network runoff purification device based on the principle of cyclone sand settling

technical field

The invention relates to a sand settling device for removing mud and sand in drainage pipes, in particular to a pipe network runoff purification device based on the principle of cyclone sand settling, belonging to the technical field of rain/sewage treatment.

Background technique

Sediment and other solid particles in rainwater pipelines are discharged into the water body with rainwater runoff, which will cause pollution to the receiving water body, and the particles deposited in the pipeline will seriously affect the drainage capacity of the system and are an important factor causing urban waterlogging. The cyclone sand settling technology has been successfully applied in the field of sewage treatment, but most of these sand settling tanks are used in the front end of the sewage treatment plant. In order to avoid pipeline deposition, it is necessary to install a large number of grit chambers scattered on the drainage branch pipes for rainwater pipelines or rainwater-sewage combined pipelines. Therefore, simple structure and low cost are the basic technical requirements for the rainwater pipeline grit chamber. At the same time, it is also required that it is not easy to block, does not affect drainage and is convenient to manage.

At present, the rainwater cyclone sand settling technology has attracted people's attention, and many patents and technologies have been disclosed one after another, such as: Chinese patent publication CN211849910U "A kind of primary rain cyclone separation well", which designs a deeper tank body and compares Complex internal structure; CN211421236 "A hydrocyclone separation well", the patent designs a grid to block dirt, but the existence of the grid can easily cause blockage and affect drainage; Chinese patent publication CN210934009U "A cyclone The inner design of support and filter screen is easy to be blocked by leaves or weeds, which is inconvenient for operation and management. Chinese Patent Publication CN105587032A "Swirl grit chamber for rainwater pipeline" can better solve the contradiction between sedimentation and flow capacity, but a guide tube is designed inside, and the support of the guide tube is easily blocked by weed leaves. , In addition, the guide tube affects the bottom sediment cleaning work; Chinese patent publication CN203916177U "rainwater pipeline cyclone grit chamber" is designed with a conical pool bottom and a sand pump, which increases construction and equipment costs and is difficult to be widely used. .

SUMMARY OF THE INVENTION

Aiming at the above-mentioned defects of the prior art, the present invention designs a pipe network runoff purification device based on the principle of cyclone sand settling, which effectively solves the problem of deficiencies in the existing cyclone flow sand settling device for drainage pipes.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present invention is:

A pipe network runoff purification device based on the principle of swirling sand settling, comprising a pool body, a water inlet pipe, a water outlet pipe, a deflector, a support body, an energy dissipation grid and a sand collecting bucket, and the water inlet pipe is located at a low position along the pool body. The tangential direction is connected to the cylindrical pool body, the water outlet pipe is connected to the pool body along the tangential direction of the pool body at a high position, and the outer edges of the water inlet pipe and the water outlet pipe are respectively tangent to the pool body; The upper edge of the opening of the water inlet pipe inside the pool body is lower than the lower edge of the opening of the water outlet pipe, and a half-moon-shaped deflector is arranged in the horizontal direction between the two; the bottom of the pool body is provided with a support body, An energy dissipation grid is supported on the support body, and the pool space under the energy dissipation grid forms a sand hopper; the energy dissipation grid is a split grid, and a complete circular grid is formed by several fan-shaped grids. The upper edge of the energy-dissipating grille is below the lower edge of the water inlet pipe, and the lower edge of the energy-dissipating grille is placed on the support body; wherein, from the inner side of the circular grille to the Viewed from the outside of the circle, the cross section of the grid bars of the energy dissipation grid is arranged with the upper end inclined at a certain angle to the direction of the swirling flow, so as to prevent the water flow from directly rushing into the energy dissipation grid and disturbing the sediment deposited in the sand collecting hopper.

Further, the fan-shaped grid is composed of a circular arc grid and grid bars, and radially inclined grid bars are arranged between the inner and outer circular arc grids.

Further, the angle of inclination of the grid bars to the swirl direction is 10-40 degrees.

Further, the angle of inclination of the grid bars to the swirl direction is 30 degrees.

Further, the grid bar is a rectangular grid bar, and its material is carbon steel, stainless steel, plastic or cast iron.

Further, the inner wall of the pool where the sand collecting bucket is located is thickened to form a step, and the outer periphery of the energy dissipation grille is located on the step.

Further, the support body is bolted or clamped to the energy dissipation grid.

Further, the energy dissipation grille is assembled from 4-20 fan-shaped grilles, which are linked together by clamping and bolting, and can be easily decomposed during installation, debugging and cleaning of the sand collecting hopper. with assembly.

Compared with the prior art, the present invention has the following technical effects:

The invention effectively solves the problem of the insufficiency of the existing cyclone sand settling device for drainage pipelines, and has the advantages of simple structure, low cost, not easy to block, no influence on drainage, and convenient management.

Description of drawings

Accompanying drawing 1 is the three-dimensional structure schematic diagram of the pipe network runoff purification device based on the principle of swirling sand settling according to the present invention;

Accompanying drawing 2 is the side view of the pipe network runoff purification device based on the principle of cyclone sand settling of the present invention;

Accompanying drawing 3 is the top view of the pipe network runoff purification device based on the principle of cyclone sand settling of the present invention;

Accompanying drawing 4 is the top view of the energy dissipation grid of the present invention;

Figure 5 is a cross-sectional view of the energy dissipation grid of the present invention.

In the figure, 1-pool body, 2-water inlet pipe, 3-water outlet pipe, 4-deflector plate, 5-support body, 6-energy dissipation grid, 7-sand collecting bucket, 61-grid bar, 62-circle Arc grill.

Detailed ways

The present invention will be described in detail below with reference to accompanying drawings 1-5.

As shown in Figures 1-5, a pipe network runoff purification device based on the principle of swirling sand settling in this embodiment includes a tank body 1, a water inlet pipe 2, a water outlet pipe 3, a deflector 4, a support body 5, a The energy grid 6 and the sand collecting bucket 7 are shown in FIG. 1 . The water inlet pipe 2 is connected to the cylindrical pool body 1 along the tangential direction of the pool body 1 at a low position, and the water outlet pipe 3 is connected to the pool body 1 along the tangential direction of the pool body 1 at a high position. 1 Tangent. As shown in Figure 2-3, the axes of the water inlet pipe 2 and the water outlet pipe 3 are located on the same vertical plane. The upper edge of the opening of the water inlet pipe 2 inside the pool body 1 is lower than the lower edge of the opening of the water outlet pipe 3, and a half-moon-shaped deflector 4 is arranged in the horizontal direction between the two. The bottom of the pool body 1 is provided with a support body 5 , an energy dissipation grid 6 is supported on the support body 5 , and a sand collecting bucket 7 is formed in the pool body space under the energy dissipation grid 6 . As shown in Figure 3-5, the energy dissipation grid 6 is a split grid, which is composed of 20 fan-shaped grids to form a complete circular grid, which is convenient for its disassembly and assembly in the pool body 1. The arc grid 62 and the grid bars 61 are formed, and radially inclined grid bars 61 are provided between the inner and outer arc grids 62 . The upper edge of the energy dissipation grid 6 is below the lower edge of the water inlet pipe 2 , and the lower edge of the energy dissipation grid 6 is placed on the support body 5 . Among them, from the inside of the circle to the outside of the circular grille, the cross-section of the grid bars 61 of the energy-dissipating grille 6 is arranged with the upper end inclined at a certain angle to the direction of the swirl, so as to prevent the water flow from directly rushing into the energy-dissipating grille 6 to disturb the mud sand deposited in the sand collecting bucket 7. In this embodiment, the grid bars 61 are rectangular plastic grid bars, the angle of which is inclined to the direction of the swirl flow is 30 degrees, and is injection-molded together with the arc grid 62 .

In addition, the inner wall of the pool body 1 where the sand collecting bucket 7 is located is thickened to form a step, and the outer periphery of the energy dissipation grid 6 is located on the step, which plays a peripheral support role.

When in use, the water flow enters the tank body 1 along the tangential direction from the water inlet pipe 2, and a rotating flow is formed in the tank. At the same time, a part of its kinetic energy is consumed, the flow rate is reduced, and the heavy particles in the water are precipitated under the action of gravity and pass through the energy dissipation grid. 6 Enter the sand bucket 7. The water in the upper space of the pool body 1 flows out through the water outlet pipe 3 .

The above-mentioned embodiments are only enumerations made to illustrate the technical solutions of the present invention more clearly, and are not intended to limit the present invention. The modifications of the technical solutions of the present application by those of ordinary skill in the art according to common knowledge in the field are also within the scope of the protection of the present application. In short, the above-mentioned embodiments are merely examples, and the protection scope of the present application is subject to the scope of the appended claims.

Claims (3)

1. A pipe network runoff purification device based on the principle of swirling sand settling, comprising a pool body (1), a water inlet pipe (2), a water outlet pipe (3), a deflector (4), a support body (5), a The energy grid (6) and the sand collecting bucket (7) are characterized in that: the water inlet pipe (2) is connected to the cylindrical pool body (1) along the tangential direction of the pool body (1) at a low position, and the water outlet pipe (3) ) at a high position along the tangential direction of the pool body (1) to connect the pool body (1), and the outer edges of the water inlet pipe (2) and the water outlet pipe (3) are respectively tangent to the pool body (1); the water inlet pipe (2) and The axis of the water outlet pipe (3) is located on the same vertical plane; the upper edge of the opening of the water inlet pipe (2) inside the pool body (1) is lower than the lower edge of the opening of the water outlet pipe (3), and the distance between the two is horizontal A half-moon-shaped deflector (4) is arranged in the direction; a support body (5) is arranged at the bottom of the pool body (1), and an energy dissipation grid (6) is supported on the support body (5), and the energy dissipation grid (6) The space below the pool body forms a sand collecting hopper (7); the energy dissipation grille (6) is a split grille, which is composed of several fan-shaped grilles to form a complete circular grille, which is convenient for its storage in the pool body. (1) Internal disassembly and assembly; the upper edge of the energy dissipation grille (6) is below the lower edge of the water inlet pipe (2), and the lower edge of the energy dissipation grille (6) is placed on the support body (5) ; Among them, from the inside of the circle of the circular grille to the outside of the circle, the cross-section of the grid bars (61) of the energy dissipation grille (6) is arranged with the upper end inclined at a certain angle in the direction of the swirl, in order to avoid water flow Directly rushes into the energy dissipation grid (6) to disturb the mud sand deposited in the sand collecting bucket (7); The fan-shaped grille is composed of a circular arc grid (62) and grid bars (61), and radially inclined grid bars (61) are arranged between the inner and outer arc grids (62); the grid bars (61) 61) The angle of inclination to the swirl direction is 10-40 degrees; the inner wall of the pool body (1) where the sand collecting bucket (7) is located is thickened to form a step, and the outer periphery of the energy dissipation grid (6) is located on the On the steps; the energy dissipation grille (6) is assembled from 4-20 fan-shaped grilles, and connected together by means of clamping and bolting. 2 . The pipe network runoff purification device based on the principle of swirling sand settling according to claim 1 , wherein the angle of inclination of the grid bars ( 61 ) to the swirling direction is 30 degrees. 3 . 3. A pipe network runoff purification device based on the principle of cyclone sand settling according to claim 2, characterized in that: the grid (61) is a rectangular grid, and its material is carbon steel, stainless steel, plastic or cast iron.

Images