Riser pre-buried floor drain of rainwater drainage system

Abstract

The invention discloses a riser pre-buried floor drain of a rainwater drainage system. The riser pre-buried floor drain comprises a protective cover, a water collecting tray, an upper riser, a lower riser and a main body, wherein the main body comprises a large round pipe, a reducing pipe and a small round pipe; the lower end of the upper riser is inserted into the main body in a matched manner; aplurality of vertical grid plates are arranged on the outer side of the small round pipe; the small round pipe is inserted into the lower riser in a matched manner, and meanwhile, all the grid plateson the outer side of the small round pipe are in close contact with the inner wall of the lower riser; and accumulated water enters the water collecting tray after being filtered by the protective cover, and then flows into the lower riser through a water flow channel formed among the outer wall of the small round pipe, the grid plates and the inner wall of the lower riser. The riser pre-buried floor drain disclosed by the invention is simple in structure; a retraction structure in the middle of the main body can accelerate the water flow drainage speed, enhance the siphon effect and enhancethe drainage capacity of the floor drain. The retraction structure is arranged in the middle of the main body, a baffle is arranged on the outer side of the middle of the main body, and the grid platestructure is arranged on the outer side of the lower part of the main body, so that gas can be guaranteed to be compensated into the lower riser during full flow, negative pressure cannot be formed in the risers, and the phenomenon of suction flattening is avoided.

Description

technical field [0001] The application relates to a rainwater drainage system of a building, in particular to a pre-buried floor drain in a standpipe of the rainwater drainage system. Background technique [0002] Nowadays, the policy of zero direct discharge of sewage is proposed, requiring rainwater and sewage to be discharged separately, and the rainwater drainage system needs to use a separate riser. The riser of the rainwater drainage system is generally installed in the corner of the balcony. Before the riser is installed, holes are reserved on the balcony structural plate, and the riser is sealed after the riser is installed. However, such a method is prone to cracks due to the shrinkage of the sealing material, which in turn causes water leakage. Contents of the invention [0003] In view of the above-mentioned technical problems existing in the prior art, the purpose of this application is to provide a pre-embedded floor drain for the standpipe of the rainwater d...

AI Technical Summary

Problems solved by technology

However, this method is prone to cracks due to the shrinkage of the sealing material, which in turn causes water leakage.

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