Flow-adaptive drainage ditch

Abstract

The invention discloses a flow-adaptive drainage ditch and belongs to the field of drainage. The flow-adaptive drainage ditch is composed of a water collection tank on the upper layer, a drainage tankon the lower layer and a drain pipe connected with the water outlet end of the drainage tank; the water collection tank and the drainage tank communicate through a series of multiple water guiding holes with the different cross section areas; and the multiple water guiding holes are formed in the bottom of the water collection tank and distributed at intervals in the tank length direction of thewater collection tank, and the cross section areas of the multiple water guiding holes are sequentially decreased step by step in the flow guiding direction of the drainage tank. According to the flow-adaptive drainage ditch, even if the ditch is in the horizontal direction, rainwater in the water collection tank can be taken away rapidly in the large rainfall period while drainage of the small-rainfall or large-gradient ditch is not affected, the situation that water is accumulated because the water collection tank is flat is avoided, and the flow-adaptive drainage ditch has the advantages ofbeing rapid in flood drainage, simple in structure, easy to manufacture, low in cost, convenient to construct, adaptive in displacement and adjustable in mounting; and in addition, a rainwater pipe culvert and a sewage pipe culvert can be vertically laid in the same position, and thus the advantages of occupying the small space and saving investment are achieved.

Description

technical field [0001] The invention belongs to the technical field of drainage and relates to a flow self-adaptive drainage ditch. Background technique [0002] In the existing drainage system, such as roof drainage (gutter, eaves and gutters), such a structure has a dilemma that is difficult to solve, that is, the greater the inclination angle of the water tank, the better the drainage effect, but the less beautiful; if the inclination angle If it is small, it is easy to cause rainwater to overflow directly from the gutter due to the slow drainage speed during heavy rain. Another example is open ditch drainage and hidden ditch drainage in surface drainage. Such a structure is prone to large amounts of water accumulation due to slow drainage speed during heavy rainstorms in flat terrain. Simply put, as in figure 1 As shown, when the drainage groove is approximately horizontal, the drop between the two ends of the drainage groove can only be the maximum depth of the draina...

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Problems solved by technology

[0003] In view of this, the present invention is to provide a flow self-adaptive drainage ditch to solve the problem of a large amount of water accumulation caused by insufficient drainage speed

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