The present invention provides a floor drain structure preventing hair blockage, including a floor drain cover plate and a floor drain body. The floor drain body includes an upper end portion and a lower end portion, the upper end portion of the floor drain body is provided with a first mounting portion at a middle position in an upward extending manner, the floor drain cover plate is movably connected to the first mounting portion, and a hair collection structure is fixedly arranged at the lower end portion of the floor drain body. According to the present invention, the upturned floor drain cover plate can draw the floor drain body out, which is simple in operation and convenient in use; soft material will not cause collision damage to a human body; and a staggered cross bar structure of the present invention can make hairs conveniently wound, avoiding blockage of drain holes.

A flow protector which protects drain weep holes. The flow protector is a cover, which maintains a space on top of the drain assembly that includes the weep holes which receive under-floor moisture, the flow protector cover including a top surface forming an angled surface, surrounded by an outer perimeter edge which is spaced from the top surface of the clamping ring, and forms an opening to the space only around the outer perimieter edge, This protects against mortar and other materials spilling into the weep holes.

A drain assembly comprises a shroud, a shank, and a frame. The drain assembly may further comprise a shim with an angled top surface. The frame may have an angled bottom surface. A rotational orientation of the angled top surface of the shim relative to the shank and a rotational orientation of the angled bottom surface of the frame relative to the shank may be independently adjustable, thereby allowing for the top surface of the frame to be both angularly and rotationally adjusted relative to a central axis of the drain assembly independent of the positional height of the shank. The drain assembly may further comprise a cover having bendable tabs. The bendable tabs may be disposed around a periphery of the cover and may be configured to contact an angled inner surface of an upper bowl of the shroud, such that the bendable tabs bend around the frame, thereby locking the cover onto the frame.

A temporary sediment retention assembly for removing sediment from storm water entering an inlet of a storm water drainage system can include a substantially rigid frame and a cover. The cover can include a cover material that includes one or more sections of filter materials. The sections of filter materials can be substantially integrally formed or can be connectable together, and form or define a covering or cap that is adaptable to fit over and substantially cover the frame of the temporary sediment retention assembly for retaining or filtering sediment and debris from water flowing through the temporary sediment retention assembly and into the storm water drainage system.

A drain cover assembly that retains mesh on its upper surface via a channel-fastening system that is integrated into the drain cover's perimeter zone. The mesh is retained on the upper surface of the drain cover in a robust and permanent fashion. The drain cover can be configured to provide structural rigidity for supporting a load applied to its upper surface. The drain cover can be adapted to allow for its use in existing or newly constructed drainage system installations. The meshed upper surface of the drain cover can be configured to be flat or raised in profile. The meshed upper surface of the drain cover prevents mosquito habitation and breeding within the associated drainage system and prevents fine debris particles from clogging the drainage system's flow conduit.

A connector pipe screen device configured for mounting on a water conduit includes an expandable ring mounting assembly, the expandable ring mounting assembly being configured to be engagable with and securable to the conduit near or at an axial end of the conduit at which a conduit opening is disposed, a back plate mounted on the expandable ring mounting assembly and a front cover mounted on the back plate. The front cover has a perforated portion defining a multiplicity of openings formed therein to allow water to pass through the perforated portion and to prevent debris carried by the water from passing through the perforated portion.

Disclosed herein is a structural drain trap for preventing spread of pathogens between floors, which has an improved structure in which it includes a cover and an outer chamber that are easily coupled to and decoupled from each other and provides a drain line configured to have a double structure at inner and outer portions thereof. Therefore, it is possible to prevent pathogens such as Coronavirus as well as odors or pests from flowing backward as much as possible, and thus to prevent pathogens from spreading through the gap between the floors of buildings such as apartments.

A malodor reflux blocking unit using the cardiac valve principle, includes a space providing portion inserted into the drain pipe through the drain hole and configured to provide a drain space for the drainage, blocking portions which are, in a non-draining state, disposed to face each other and configured to block communication between the drain pipe and the drain space due to a water film phenomenon which occurs due to drainage water being present between the blocking portions, and intermediate portions configured to mediate connection between the blocking portions and the space providing portion.

The invention relates to a locking element (11) for securing a grate (3). The locking element (11) comprises a spring element (113) kept between a cover element (111a) and a spring support element (117). The spring support element (117) is displaceable relative to the cover element (111a) by means of an actuating element (115). The displacement of the spring support element (117) causes a movement of at least one of the ends (113a, 113b) of the spring element (113) relative to the cover element (111a).

Provided herein are systems and methods for cleaning surface water streams. More specifically, surface water is cleaned using the systems and methods described herein wherein the surface water cleaning system comprises sequential aligned basins which are configured to direct water flow through one or a series of filter media such that the filtered water stream is reduced in organic chemicals and/or particles.