CN203307912U - Flow distribution type automatic rainwater split-flow device - Google Patents

Abstract

A diversion type rainwater automatic abandonment device, comprising a section of drainage pipe, a diversion chamber is arranged on the side of the drainage pipe, the bottom of the diversion chamber is lower than the bottom of the drainage pipe, and the bottom surface of the drainage pipe and the adjacent diversion chamber There is a pipe hole on the side to communicate with the discarding pipe, and a vent gate is set at the pipe hole on the side of the diversion chamber. There is a partition between the drainage pipe and the diversion chamber, and the part of the partition is connected. There is an automatic switching mechanism; the automatic switching mechanism includes a lever supported on the support, and the two ends of the lever are connected to the connecting rod and respectively connected to the buoy located in the diversion chamber and the cover plate located at the pipe hole on the bottom surface of the drainage pipe. It does not require manual operation, and can control the runoff pollution load rate to more than 80% with only a fraction to a few tenths of the volume of conventional rainwater interception tanks or storage tanks, which can effectively protect the ecological environment of urban water systems. Safe and rational use of urban rainwater resources.

Description

A split-type rainwater automatic abandonment device

technical field

The utility model relates to a drainage facility, in particular to a diversion type rainwater automatic discarding device.

Background technique

Urban development causes a large amount of rainwater resources to be lost. At the same time, rainwater runoff washes away a large number of non-point source pollutants and brings them into the urban water system, leading to the deterioration of the urban water ecological environment. Effective control of heavily polluted initial rainwater runoff is a key issue in the control of urban stormwater runoff pollution and the utilization of rainwater resources. Due to the randomness and discontinuity of rainfall, the pollutants in urban runoff are mainly concentrated in the initial rainfall, which makes it difficult for people to effectively control the initial rainfall in the city. At present, large rainwater ponds are often used to intercept and dispose of initial rainwater, but it requires high construction costs or land occupation, and is often difficult to implement in urban areas.

Contents of the invention

In order to overcome the deficiencies in the prior art, a split-type rainwater automatic discarding device is provided.

The technical scheme adopted by the utility model to solve the technical problem is: a diversion type rainwater automatic abandonment device, comprising a section of drainage pipe canal, a diversion chamber is arranged on the side of the drainage pipe canal, and the bottom surface of the diversion chamber is higher than that of the drainage pipe canal. Lower, there are pipe holes on the bottom surface of the drainage pipe and the side of the adjacent diversion chamber to communicate with the discarding pipe, and an emptying ram is set at the pipe hole on the side of the diversion chamber, and there is a partition between the drainage pipe and the diversion chamber. The partial connection of the partition is provided with a support on the partition, and there is an automatic switching mechanism on the support; the automatic switching mechanism includes a lever supported on the support. The cover plate at the pipe hole on the bottom of the pipe. There are double fulcrums on the above-mentioned support, and the double fulcrums are supported with bent-shaped double levers, and the double levers are respectively connected to the buoy and the cover plate through double connecting rods. The above-mentioned drainage pipes and the diversion chamber are connected by a diversion partition, a diversion slot, a small diversion channel or a diversion hole. The above-mentioned splitter is an adjustable splitter. Above-mentioned lever is inline, herringbone or shoulder pole shape. Alternatives to the buoys described above are ball floats or buoys. The effective volume of the above-mentioned shunt chamber only accounts for a fraction to several tenths of the total discarded flow.

Beneficial effects of the utility model: a shunt chamber is set on the side of the drainage pipe, and only a few tenths of the initial rainfall is used to control all the initial rainfall in the way of shunting; and through the simple and effective automatic switching mechanism The automatic control of random rainfall solves the problem that the equipment is difficult to operate due to the randomness of rainfall. It can accurately realize the automatic control of the interception flow of each rain without manual operation, and can effectively control the pollution of the initial rainwater runoff generated by various water collection surfaces in the city, effectively protect the ecological environment of the urban water system, and use it safely and rationally Urban rainwater resources. Only one tenth of the volume of conventional rainwater interception ponds or storage ponds can be used to control the runoff pollution load rate to more than 80%. The cost of civil construction or land occupation can be reduced to a few tenths.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a sectional view along line 1-1 of Fig. 1, wherein the cover plate is in an open state.

Fig. 3 is a sectional view along line 1-1 of Fig. 1, wherein the cover plate is in a closed state.

Fig. 4 is a structural schematic diagram of the switching mechanism.

In the figure 1. Float, 2. Cover plate, 3. Lever, 4. Connecting rod, 5. Support, 6. Disposal flow pipe, 7. Drain pipe, 8. Diversion chamber, 9. Diversion joint, 10. Vent gate.

Detailed ways

In the figure, a split-type rainwater automatic abandonment device includes a section of drain pipe 7, and a diversion chamber 8 is set on the side of the drain pipe. The bottom of the diversion chamber is lower than the bottom of the drain, and the bottom of the drain is There is a pipe hole on the side of the adjacent diversion chamber and the discarding pipe 6, and the vent gate 10 is set at the pipe hole on the side of the diversion chamber. 9 connected. There is a support 5 on the partition, and there is an automatic switching mechanism on the support; the support 5 is a double fulcrum or a single fulcrum, and the double fulcrum supports a glyph, herringbone or pole-shaped double lever 3, and the double lever is passed through the double lever. The connecting rods 4 and 4 are connected to the buoy 1 and the cover plate 2 respectively. The buoy 1 can be replaced by a floating ball or a floating block. The size of the buoy and cover plate is determined according to the calculation of material selection, weight, buoyancy and leverage force. All components shall meet the strength and anti-corrosion requirements.

The process of controlling the automatic discharge of initial rainwater: firstly, accurately determine the initial rainfall that needs to be intercepted; reasonable design and calculation, to achieve a small equipment investment scale and a simple operation control system, and implement effective control of polluted rainwater. It is clear that the pollutants in urban runoff are mainly concentrated in the initial rainfall, according to the nature and pollution degree of the water catchment, and then according to the size of the effective area of the water catchment, the runoff coefficient of the water catchment, the initial rainfall that needs to be discarded, and the diversion The coefficient calculates the total amount of initial rainwater (m3) that needs to be intercepted. According to the amount of pollutants in the specific area, ground conditions and drainage scale, it is determined that the effective volume of the diversion chamber only accounts for the diversion ratio of the total waste flow, and an adjustable diversion partition is installed in the rainwater pipe for diversion. A fraction to a tenth of the diverted rainwater is driven by an automatic switching mechanism to automatically control the total amount of initial runoff that needs to be intercepted. Fix the support on the partition embedded parts between the diversion chamber and the drainage pipe, and then use the movable shaft to connect the lever, connecting rod, buoy and cover plate, and fix them on the support. For road rainwater, it is better to install grilles before the drainage pipes to remove large garbage, and the diversion joints should not be too small to prevent blockage; the drainage pipes and canals before the diversion joints should have a straight and stable section to maintain the water flow in the pipes and canals and distribution uniformity. Before the rainfall, the diversion chamber was empty, and the cover of the drainage pipe was open, as shown in Figure 2. After the rainfall begins, part of the diverted initial rainwater enters the diversion chamber, the water level in the diversion chamber gradually rises, and the buoy also rises accordingly, and at the same time, the cover plate in the drainage channel is driven down through the connecting rod and lever. Before the cover plate descends to the bottom of the canal, most of the polluted initial rainwater is discharged into the community or urban sewage pipe system through the jettison pipe, and enters the sewage treatment system. When the initial rainwater entering the diversion chamber reaches the calculated amount, the cover plate is lowered in place, and the nozzle of the jettison pipe is automatically covered, and the cover plate is in a closed state, as shown in Figure 3. Cleaner rainwater in the later period or follow-up rainfall with short intervals of rainfall will enter the rainwater collection and utilization system or be discharged into the water body. After the rainfall really stops, open the vent gate, and the device completes a running cycle and returns to the initial state.

Claims (5)

1. A flow-distributing rainwater automatic abandonment device, comprising a section of drain pipe, is characterized in that: a diversion chamber is set on the side of the drain pipe, the bottom surface of the diversion chamber is lower than the bottom surface of the drain pipe, and the bottom surface of the drain pipe There is a pipe hole on the side of the adjacent diversion chamber to communicate with the discarded flow pipe. The vent gate is installed at the pipe hole on the side of the diversion chamber. There is a support, and there is an automatic switching mechanism on the support; the automatic switching mechanism includes a lever supported on the support, and the two ends of the lever are connected to the connecting rod, and then respectively connected to the buoy in the diversion chamber and the cover at the pipe hole on the bottom surface of the drainage pipe. plate. 2. The split-type rainwater automatic discarding device according to claim 1, characterized in that: there are double fulcrums on the support, and the double fulcrums are supported by bent-shaped double levers, and the double levers are respectively connected to the buoy via double connecting rods and cover plate. 3. The diversion-type rainwater automatic discarding device according to claim 1 or 2, characterized in that: the drainage pipe channel and the diversion chamber are connected by a diversion partition, a diversion slot, a small diversion channel or a diversion hole. 4. The split-type rainwater automatic discarding device according to claim 3, characterized in that: the split divider is an adjustable divider divider. 5. The split-type rainwater automatic abandonment device according to claim 1 or 2, characterized in that: the lever is in the shape of a straight line, a figure-eight or a pole; the substitute for the buoy is a floating ball or a floating block.

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