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A drainage outlet covering, comprising a plate body (1) formed by stacking multiple layers of stones. Gaps are reserved between the stones of the plate body (1), the adjacent stones are adhered to each other at contact positions, and drainage channels of the plate body (1) are formed by the gaps between the stones of the plate body (1). Drainage grooves (11) are formed in the bottom part of the plate body (1). This product can prevent small articles from flowing into the sewer and can also prevent mice, mosquitoes, flies and the like from entering or going out of the sewer.
A drainage outlet covering, comprising a plate body (1) formed by stacking multiple layers of stones. Gaps are reserved between the stones of the plate body (1), the adjacent stones are adhered to each other at contact positions, and drainage channels of the plate body (1) are formed by the gaps between the stones of the plate body (1). Drainage grooves (11) are formed in the bottom part of the plate body (1). This product can prevent small articles from flowing into the sewer and can also prevent mice, mosquitoes, flies and the like from entering or going out of the sewer.
Drainage outlet covering
WONG KWONG SHUN PAUL (author)
2017-05-04
Patent
Electronic Resource
English
Drainage outlet control built on unstable foundation
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