CN209556088U - Gutter inlet for intercepting initial rainwater based on buoy - Google Patents

Abstract

The utility model relates to a rainwater outlet for intercepting initial rainwater based on a float. The rainwater outlet for intercepting initial rainwater based on a float comprises a rainwater well, a water inlet grate covering the upper port of the rainwater well, and a rainwater pipe and a sewage pipe opened near the lower end of the rainwater well. A water collecting box is fixedly installed on the inner surface of the rainwater well, and a water inlet hole and a water outlet hole are respectively opened on the upper and lower outer surfaces of the water collecting box. A float that can float up and down with the water level is arranged inside the water collecting box. A cover plate that can rotate around an axis is movably installed near the port of the sewage pipe near the rainwater well. A pull rope is fixedly connected to the lower end of the float, and the pull rope passes through the water outlet and is fixedly connected to the outer surface of the cover plate. The rainwater outlet for intercepting initial rainwater based on a float has a simple structure, is easy to manufacture, and has a low cost. It uses hydraulic power to control the start and close of the cover plate, and is easy to promote and use.

Description

A gullies for intercepting initial rainwater based on buoys

technical field

The utility model belongs to the technical field of urban drainage facilities, in particular to a rainwater outlet for intercepting initial rainwater based on buoys.

Background technique

The function of the gully is to collect ground rainwater during rainfall, and transport the rainwater to the rainwater pipeline system through the water inlet grate and connecting pipes, so as to avoid the accumulation of rainwater on the road surface and affect the traffic and residents' activities. For the diversion system drainage pipeline system, rainwater pipeline system and The sewer systems are separate and there is no connection between the two.

When precipitation occurs, due to various reasons such as human activities, dustfall, vehicle driving, and lack of sanitation facilities, certain pollutants will accumulate on the ground, and these pollutants will enter the drainage pipes with the rainfall, resulting in certain pollution. In addition, sewage (swill) from roadside dining is poured from rainwater outlets, irregular car washes, garbage spills, open-air vegetable markets, firefighting, traffic accidents and other reasons will cause pollutants to enter rainwater pipes. It is called the initial rainwater, which is easy to cause serious damage to the environment; the measures taken by people at present are to set up interception facilities (interceptor wells) at a certain position in the rainwater pipeline system to intercept the initial rainwater to the storage tank, and use sedimentation, cyclone separation or The initial rainwater is transported to the sewage treatment plant for treatment. However, for the rainwater drainage pipeline system, due to the difference in the distance from the interception well, the arrival time of rainwater varies greatly: the place near the interception well, the initial rainwater reaches the interception soon Wells; and in places far away, when the initial rainwater reaches the interception well, the initial rainwater nearby has already passed, and it is no longer the initial rainwater that enters the interception well. In order to obtain a better collection effect, it is often necessary to set up a large number of interception wells, which will cause high costs and is not conducive to popularization and use.

Utility model content

The purpose of this utility model is just to provide a kind of simple in structure, rationally designed gully based on buoy to catch initial rainwater in order to solve the above-mentioned problem.

The utility model realizes above-mentioned purpose through following technical scheme:

A rainwater outlet for intercepting initial rainwater based on buoys, including a rainwater well, a water inlet grate covering the upper port of the rainwater well, and a rainwater pipe and a sewage pipe set near the lower end of the rainwater well. The inner surface of the rainwater well is fixedly installed with A water collecting tank, the upper and lower outer surfaces of the water collecting tank are respectively provided with water inlet holes and water outlet holes, and the inside of the water collecting tank is provided with buoys that can float up and down with the water level;

The port of the sewage pipeline close to the rainwater well is movably installed with a cover plate that can rotate around the axis;

The lower end of the buoy is fixedly connected with a pull rope, and the pull rope passes through the water outlet hole and is fixedly connected with the outer surface of the cover plate.

As a further optimization solution of the present utility model, a water inlet tray is arranged above the water inlet hole at the upper end of the water collecting tank, and a filter screen is arranged on the upper end surface of the water inlet tray.

As a further optimization scheme of the present utility model, the diameter of the water inlet hole is 3 times of the diameter of the water outlet hole, and the two can satisfy the requirement that the water collection tank be filled in the specified time, and the volume occupied by the buoy should be deducted from the time of filling, the said A soft sleeve is arranged in the water outlet hole at the lower end of the water collecting tank.

As a further optimization solution of the present invention, the diameter of the rainwater pipe is the same as that of the sewage pipe, and the top elevation of the sewage pipe is 100-200 mm lower than that of the rainwater pipe.

As a further optimization solution of the present invention, the mass of water corresponding to the effective volume of the buoy is greater than the mass of the cover plate.

As a further optimization solution of the present utility model, the cover plate and the buoy are connected by the stay rope, and the buoy rises and pulls the cover plate to rise to close the sewage pipeline. The maximum rising distance is not less than 1.30d, where d is the diameter of the sewage pipe.

As a further optimization solution of the present utility model, the inner wall surface of the rainwater well is fixed with a flow limiting plate bracket, and the upper end surface of the flow limiting plate bracket is detachably installed with a flow limiting plate, and the flow limiting plate is provided with a flow limiting hole.

As a further optimization scheme of the present utility model, the upper end of the flow limiting plate plus the upper end of the water collecting tank covers the upper outer surface of the entire rainwater well, and the diameter of the flow limiting hole is 0.75-0.85 of the diameter of the sewage pipe. times.

The beneficial effects of the utility model are:

1) This utility model utilizes the linkage effect of the buoy and the cover plate to realize that the rainwater with initial pollution is transported to the sewage pipeline system within a certain period of time at the beginning of the rainwater well, and the sewage pipeline can be closed in time after the rainfall for a certain period of time Conveying the rainwater in the middle and later stages into the rainwater pipeline system;

2) The maintenance workload of the utility model device is small, and the main maintenance work is to regularly flush the filter screen above the water inlet tray (water collection funnel), and this process can be carried out without opening the water inlet grate at the wellhead of the rainwater well , just use flushing directly from the gap of the water inlet grate, which is very simple and convenient;

3) The utility model is simple in structure, easy to manufacture, and low in cost, and uses hydraulic control to start and close the cover plate, and is easy to popularize and use.

Description of drawings

Fig. 1 is the overall structural representation of embodiment 1 of the present utility model;

Fig. 2 is a top view of Fig. 1 of the present utility model.

In the figure: 1. Rainwater well; 2. Rainwater pipe; 3. Sewage pipe; 4. Cover plate; Net; 10, buoy; 11, water inlet grate; 12, flow-limiting hole; 13, pull rope.

Detailed ways

The application will be described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific embodiments are only used to further illustrate the application, and cannot be interpreted as limiting the protection scope of the application. The above application content makes some non-essential improvements and adjustments to this application.

Example 1

As shown in Figure 1 and Figure 2, a rainwater outlet based on a buoy to intercept initial rainwater includes a rainwater well 1, a water inlet grate 11 covering the upper port of the rainwater well 1, and a rainwater pipeline set at the lower end of the rainwater well 1 2 and the sewage pipeline 3, the inner surface of the rainwater well 1 is fixedly equipped with a water collection box 7, the water collection box 7 can be poured as a whole for concrete, and can also be a separable water tank that is provided separately, and the upper and lower end outer surfaces of the water collection box 7 are provided with respectively The water inlet hole and the water outlet hole, the inside of the water collection tank 7 are provided with a buoy 10 that can float up and down with the water level;

The port of the sewage pipe 3 close to the rainwater well 1 is movably installed with a cover plate 4 that can rotate around the axis, and the rotation axis of the cover plate 4 is installed at the lower end of the sewage pipe 3;

The lower end of the buoy 10 is fixedly connected with a stay rope 13, and the stay rope 13 passes through the outlet hole and is fixedly connected with the outer surface of the cover plate 4;

The inner wall surface of the rainwater well 1 is fixedly installed with a flow limiting plate support 5, and the upper end surface of the flow limiting plate support 5 is detachably installed with a flow limiting plate 6. 12. The flow rate of the restrictor hole 12 needs to be hydraulically calculated to meet the same value as the flow rate of the sewage pipe 3 or the flow rate of the rainwater pipe 2. The flow rate of the sewage pipe 3 or the flow rate of the rainwater pipe 2 should use the same value, according to the "Outdoor Drainage Design Code" The calculation method for the design flow of rainwater pipelines is determined. If the rain begins to be a severe rainstorm, due to the existence of the flow-limiting hole 12, the excess flow of rainwater will stay above the flow-limiting hole 12, which will not cause the water level below the flow-limiting hole 12 to rise, and the initial rainwater will not enter the rainwater pipe 2. Only after reaching a certain period of time, the buoy 10 rises to a specified height, the sewage pipe 3 is closed, and the rainwater begins to enter the rainwater pipe 2, so the device can ensure the interception effect of the initial rainwater.

A water inlet tray 8 is arranged above the water inlet hole at the upper end of the water collecting box 7, and the water inlet tray 8 is a water collecting funnel to help collect rainwater. The diameter of the water hole is three times the diameter of the water outlet hole, and the two can satisfy the water collection tank 7 within 10 minutes (or other specified time). The filling time should be deducted from the volume occupied by the buoy 10. The water outlet hole is provided with a soft sleeve to reduce the friction between the pull rope 13 and the water outlet hole; the diameter of the rainwater pipe 2 is the same as that of the sewage pipe 3, and the pipe top elevation of the sewage pipe 3 is lower than that of the rainwater pipe 2 The elevation is 100-200mm; the quality of water corresponding to the effective volume of the buoy 10 is far greater than the quality of the cover 4; the cover 4 and the buoy 10 are connected by a pull rope 13, and the buoy 10 rises and pulls the cover 4 to rise to close the sewage Pipeline 3, the maximum rising distance of buoy 10 in the box is not less than 1.30d, and d is the diameter of sewage pipeline 3; The diameter of the orifice 12 is 0.75-0.85 times of the diameter of the sewage pipe 3 .

It should be noted that when installing the position of the sewage pipe 3 and the outlet hole, the staff needs to ensure that the cover plate 4 can be closed after the pull rope 13 is pulled up, so that the cover plate 4 and the mouth of the sewage pipe 3 fit together. When the rainfall just started, the rainwater entered the rainwater well 1 through the flow limiting hole 12. At this time, because the sewage pipe 3 was in an open state, all the initial rainwater entered the sewage pipe 3. After the rainfall began, the rainwater also began to enter the water collection tank 7. There is a buoy 10 in the water tank 7, and the water inlet hole of the water collection tank 7 is set to have a water intake capacity of 10 minutes to fill the water collection tank 7 (this value can be consistent with the ground water collection time t1 corresponding to the rainwater outlet, or can be flushed according to the ground) The requirements of the situation are greater than t1 as appropriate), along with the water intake of the water collection tank 7, the water level in the tank gradually rises (the discharge orifice of the water collection tank 7 is far smaller than the water inlet orifice), the buoy 10 rises, and the buoy 10 rises to drive the sewage pipeline 3 The cover plate 4 at the entrance rises. When the specified time is reached, the inlet cover plate 4 of the sewage pipe 3 is closed under the joint action of the tension of the buoy 10, water pressure and flow resistance. Once the sewage pipe 3 is closed, the water level in the rainwater well 1 will Rising rapidly, the rainwater flows out through the rainwater pipe 2 and enters the rainwater drainage system;

After the rainfall stops, the water level in the rainwater well 1 gradually drops, and the small hole at the bottom of the water collecting tank 7 gradually empties the water in the water collecting tank 7, and the buoy 10 falls on the bottom of the water collecting tank 7, and the buoy 10 no longer has a pulling force on the cover plate 4, Because the cover plate 4 and the pipe wall of the sewage pipe 3 are not sealed facilities, a small amount of accumulated water in the well gradually leaks out of the rainwater well 1. After losing the water pressure, the cover plate 4 will fall under the action of gravity, and the sewage pipe 3 is opened again. state.

The above-mentioned embodiments only express several implementations of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims (7)

1. A rainwater outlet based on a buoy to intercept initial rainwater, comprising a rainwater well (1), a water inlet grate (11) covering the upper port of the rainwater well (1) and a rainwater opening near the lower end of the rainwater well (1) The pipeline (2) and the sewage pipeline (3) are characterized in that: the inner surface of the rainwater well (1) is fixedly equipped with a water collection box (7), and the outer surface of the upper and lower ends of the water collection box (7) is respectively provided with an inlet A water hole and a water outlet hole, the inside of the water collection tank (7) is provided with a buoy (10) that can float up and down with the water level; The port of the sewage pipe (3) close to the rainwater well (1) is movably equipped with a cover plate (4) that can rotate around an axis; A stay rope (13) is fixedly connected to the lower end of the buoy (10), and the stay rope (13) passes through the water outlet hole and is fixedly connected to the outer surface of the cover plate (4). 2. A kind of rainwater outlet based on buoys to intercept initial rainwater according to claim 1, characterized in that: a water inlet tray (8) is arranged above the water inlet hole at the upper end of the water collection tank (7), and the The upper end surface of the water inlet tray (8) is provided with a filter screen (9). 3. A kind of rainwater outlet based on buoys according to claim 1, characterized in that: the diameter of the water inlet hole is 3 times the diameter of the water outlet hole, and both can meet the requirement that the water collection tank ( 7) Filling up, the water outlet hole at the lower end of the water collecting tank (7) is provided with a soft sleeve. 4. A gutter based on buoys to intercept initial rainwater according to claim 1, characterized in that: the diameter of the rainwater pipeline (2) is the same as that of the sewage pipeline (3), and the sewage pipeline The pipe top elevation of (3) is 100-200mm lower than the pipe top elevation of the rainwater pipe (2). 5. A buoy-based gully for intercepting initial rainwater according to claim 1, characterized in that: the mass of water corresponding to the effective volume of the buoy (10) is greater than the mass of the cover plate (4) . 6. A buoy-based gully for intercepting initial rainwater according to claim 1, characterized in that: the buoy (10) rises and pulls the cover (4) up to close the sewage pipe (3) , the maximum rising distance of the buoy (10) in the tank is not less than 1.30d, where d is the diameter of the sewage pipe (3). 7. A gully based on buoys to intercept initial rainwater according to claim 1, characterized in that: the inner wall surface of the rainwater well (1) is fixedly installed with a limiting plate bracket (5), and the limiting plate The upper end surface of the support (5) is detachably installed with a flow limiting plate (6), and the flow limiting plate (6) offers a flow limiting hole (12), and the upper end of the flow limiting plate (6) is added with the water collecting tank ( The upper end of 7) covers the entire outer surface of the upper end of the rainwater well (1), and the diameter of the restriction hole (12) is 0.75-0.85 times the diameter of the sewage pipe (3).