34results about How to "Prevent back odor" patented technology

The invention provides an access apparatus of a pipeline for anti-back overflow. The apparatus which comprises a vertical tube connecting tube, a water seal tank, and a water seal and division hanger plate arranged in the water seal tank is characterized in that: the top of the water seal and division hanger plate is hinged to the inner side of the top tank wall of the water seal tank, the vertical tube connecting tube which is inserted through the water seal tank is provided with a water outlet, and a lowest part of the water outlet is not lower than the bottom of the water seal and division hanger plate; the bottom of the water seal and division hanger plate bears against the wall of the water seal tank, and the water seal and division hanger plate divides the water seal tank into two tanks which are not communicated; and the water outlet is arranged in one of the two tanks, and the wall of the other one of the two tanks is provided with a water inlet. The apparatus of the present invention has the advantages of scientific design, reliable performance, and self seal for anti-back overflow.

The invention discloses a building drainage plastic vertical pipe with a spiral single blade. The building drainage plastic vertical pipe comprises a plastic vertical pipe body, wherein the inner wall of the plastic vertical pipe body is coaxially provided with the spiral single blade along the axis direction of the vertical pipe; the connection part of the root part of the spiral single blade and the inner wall of the plastic vertical pipe body is of a circular arc transition structure. According to the pipe, the connection part of the root part of the spiral single blade and the inner wall of the plastic vertical pipe body is of the circular arc transition structure; the curvature is reduced greatly (the curvature radius is increased); according to the fluid wall attachment effect theory, when water in the pipe falls off along the pipe wall, the water flow is adsorbed to the pipe wall and cannot be removed so as to form a good wall attachment water film fluidic state, so that the situation that the water flow moves toward the center of the vertical pipe to generate water cork flow is prevented; the fluctuation of pressure in the pipe is reduced; the water drainage flow rate within a certain pressure fluctuation range is improved; the alternative impact by the water flow to the pipe wall is also prevented, so that the pipeline vibration and drained water noise are buffered greatly.

The invention discloses a building drainage plastic stack with spiral grooves. The plastic stack comprises a plastic stack body, wherein the inner wall of the plastic stack body is coaxially and circumferentially provided with a plurality of spiral grooves along the axis of the stack; the junctions of the groove bottoms of the spiral grooves and the groove walls and the junctions of notches of the spiral grooves and the inner wall of the plastic stack body are all of circular arc transition structures. The junctions of the groove bottoms of the spiral grooves and the groove walls and the junctions of the notches of the spiral grooves and the inner wall of the plastic stack body are all of the circular arc transition structures, so the spiral grooves are of the streamline-shaped arc structures with small curvature, namely large curvature radius; the situation that the water flow moves towards the center of the stack to produce water blockage is avoided according to the theory of a fluid wall attachment effect, the fluctuation of pressure in the stack is reduced, the drainage flow rate within a certain pressure fluctuation range is improved, alternate impact of the water flow to the stack is also avoided, and the pipeline vibration and the drainage noise are greatly reduced.

The invention provides a drainage and water-saving conversion device, which comprises an outer valve cylinder and an inner valve cylinder, the outer valve cylinder is provided with an outer water inlet, a first outer water outlet and a second outer water outlet, and the inner valve cylinder is provided with An inner water inlet and an inner water outlet; the inner valve cylinder is arranged in the outer valve cylinder and rotates with the outer valve cylinder between the first position and the second position: in the first position, the inner outlet The water outlet is only connected to the first outer water outlet, and the inner water outlet is only connected to the second outer water outlet in the second position, and the inner water inlet is connected to the second outer water outlet in the first and second positions. The external water inlet is correspondingly connected. By rotating the inner valve cylinder, the direction of water flow is switched between the first outer water outlet and the second outer water outlet, so that the waste water flows to the water-saving tank or to the sewer, avoiding the trouble of directly switching the floor drain, easy to use, and When the second external water outlet is blocked, it is equivalent to blocking the floor drain, which effectively avoids the phenomenon of back odor.

The invention provides a riser connecting member for draining at the same layer. The riser connecting member comprises a water collecting tank, a riser connecting pipe, a top cover and a water sealing device, wherein the riser connecting pipe is arranged in a manner of penetrating through the water collecting tank; the top cover is arranged at the top of the water collecting tank; the water sealing device is arranged in the water collecting tank; a water outlet is arranged on the riser connecting pipe and is positioned in the water collecting tank; a drainage inlet is arranged on the top cover; the water sealing device is arranged on the lower end face of the top cover; a water feeding port of the water sealing device is communicated with the drainage inlet; the lowest part of the draining port of the water sealing device is not lower than that of the water outlet; and the water sealing device comprises a water sealing tank, a tank body water sealing separating board arranged in the water sealing tank as well as a water feeding port and a draining port which are arranged on the tank wall of the water sealing tank. The connecting member has the advantages of reliable performance, predominant seepage preventing effect, centralized water sealing and odor return prevention.

The invention discloses a building drainage plastic stack with spiral ribs. The plastic stack comprises a plastic stack body, wherein the inner wall of the plastic stack body is coaxially and circumferentially provided with a plurality of spiral ribs along the axis of the stack; the top surfaces of the spiral ribs are curved surfaces; junctions of the root parts of the spiral ribs and the inner wall of the plastic stack body are of circular arc transition structures. The top surfaces of the spiral ribs are curved surfaces, the curvature is greatly reduced (the curvature radius is increased), the situation that a water flow moves towards the center of the stack to produce water blockage is avoided according to the theory of a fluid wall attachment effect, the fluctuation of pressure in the pipe is reduced, the drainage flow rate within a certain pressure fluctuation range is improved, alternate impact of the water flow to the pipe is also avoided, and the pipeline vibration and the drainage noise are greatly reduced.

The invention provides a pipeline connection device for preventing overflow return and sludge. The device comprises a riser connecting pipe, a water sealing tank and a water sealing and dividing hanging plate, wherein the top end of the water sealing and dividing hanging plate is hinged with the inner side of the tank wall at the top of the water sealing tank; the riser connecting pipe penetrates through the water sealing tank and is provided with a draining port; when the bottom end of the water sealing and dividing hanging plate supports against the tank wall of the water sealing tank, the water sealing tank is divided into two tank bodies which are not mutually communicated by using the water sealing and dividing hanging plate; the draining port is arranged in one tank body; a water feeding port is arranged on the tank wall of the other tank body; a tank body separating board is arranged at the bottom of the water sealing tank and is positioned between the riser connecting pipe and the water sealing and dividing hanging plate; the top of the tank body separating board is lower than the tank wall at the top of the water sealing tank and is not lower than the bottom end of the water sealing and dividing hanging plate; and the lowest part of the draining port is level with the bottom of the water sealing tank. The device has the advantages of scientific design, reliable performance and capabilities of automatically sealing and preventing overflow return and sludge.

The invention discloses a helical single-blade cyclone for building drainage. The helical single-blade cyclone for building drainage comprises a tee joint body, wherein the upper interface of a main pipe of the tee joint body is connected with an upper connecting pipe section for connecting an upper stand pipe, the lower interface of the main pipe of the tee joint body is connected with a lower connecting pipe section for connecting a lower stand pipe, a helical guide blade is arranged on the inner wall of the lower connecting pipe section, and an inwards-flanging arc guide edge is arranged on the inner wall of the bottom of the upper connecting pipe section. According to the helical single-blade cyclone for building drainage, good wall-attached flows can be formed during large displacement through the cooperation of the inwards-flanging arc guide edge and the helical guide blade, the phenomenon of hydraulic jumping and the phenomenon that the blade is directly flushed are avoided, good ventilating effect is achieved, pressure fluctuation can be reduced and the water drainage capability is improved; and the single helical guide blade can prevent multi-blade multi-flow convergence, the water flow falling speed is lowered, the noise is lowered, the odor of the toilet is avoided and the drainage capability is improved.