45results about How to "Reduce drainage noise" patented technology

The invention discloses a vortex drainage-type noise reduction drainage pipe, which comprises a drainage pipe body. 6-18 guide spiral fins are connected with the inner wall of the drainage pipe body in a uniform distribution manner; each guide spiral fin is provided with a convex arc rebound surface and a concave arc interference surface; the spiral angle of each guide spiral fin is 3-12 degrees, and the spiral fins are 3-12mm wide, and 2-8.5mm high. The arc radius of each rebound surface is 3-12mm from the section view vertical to the normal cross section of the corresponding spiral fin; the arc radius of each interference surface is 7-22mm from the section view vertical to the normal cross section of the corresponding spiral fin. The invention also discloses a manufacturing method of the vortex drainage-type noise reduction drainage pipe. According to the vortex drainage-type noise reduction drainage pipe disclosed by the invention, the structure and the number of the internal spiral fins are optimized, and therefore, the drainage noise can be effectively reduced, and the strength of a drainage pipe material is enhanced. The vortex drainage-type noise reduction drainage pipe is widely suitable for building drainage pipelines of industrial or civil buildings, and is especially suitable for public communities with high noise reduction requirements. By adopting the method, the material prescription is optimized, and the manufacturing cost can be remarkably reduced.

The invention discloses a noise ultra-attenuation color plastic composite polrvinyl chloride drainage pipe and a manufacturing method thereof, belonging to the field of drainage pipes. The wall of the noise ultra-attenuation color plastic composite polrvinyl chloride drainage pipe is of a four-layer composite structure and comprises a color ASA (Acetyl Salicilic Acid) layer, a PVC (Poly Vinyl Chloride) micro-foaming layer, a PVC hollow layer and a PVC internal helical layer from the outside to the inside. Three kinds of noise attenuation, i.e., noise attenuation of a hollow wall structure, noise attenuation of a micro-foaming structure and noise attenuation of an internal helical structure are combined, thus, the drainage noise of the plastic drainage pipe is greatly reduced, the drainagepipe has extremely good noise absorption, noise attenuation and noise insulation effects, and the aim of noise ultra-attenuation of the plastic pipe is achieved. The noise ultra-attenuation color plastic composite polrvinyl chloride drainage pipe has the advantages of keeping the favorable performances such as light weight, corrosion resistance, scaling prevention, flame retardance, wear resistance, good toughness, high impact strength, good gas tightness, capability of recycling, convenience and rapidness in installation, energy saving, sanitation, environment friendliness and the like of the traditional plastic drainage pipe and also has the advantages of excellent anti-aging performance and weather resistance, good noise attenuation effect, varied colors and the like.

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 relates to a water draining tee capable of generating rotational flow, which is connected into a whole by a vertical pipe body and a side pipe body; the side pipe body is spiral downwards at the right and is communicated with the right side of the vertical pipe body; the vertical pipe body is formed by a cylindrical pipe, a conical pipe and a bell mouth of an elastic sealing ring; the large mouth end of the conical pipe is connected with the lower end of the cylindrical pipe, and the inner diameter and the wall thickness of the large mouth end of the conical pipe are the same asthose of the cylindrical pipe; a small mouth end of the conical pipe is connected with the bell mouth of the elastic sealing ring, and the inner diameter and the wall thickness of the small mouth endof the conical pipe are the same as those of the bell mouth of the elastic sealing ring; a spiral guide vane is arranged on the conical pipe along the dextrorotation of the inner wall; a groove is arranged in the middle of the bell mouth of the elastic sealing ring and is internally provided with the elastic sealing ring; a side rotary pipe of the side pie body is spiral downwards at the right and is communicated with the right side of the cylindrical pipe, and the wall thickness of the side rotary pipe is the same as that of the cylindrical pipe; the included angle between the centre line ofthe side pipe body and the center line of the vertical pipe body is alpha, and the included angle between a guide inclined plane of the side pipe body and the center line of the vertical pipe body isgamma; the joint between the bottom of the side pipe body and the vertical pipe body takes on u-type transition, so that the water circulating capability of a water draining system is improved, and the water draining noise can be reduced.

The invention provides a non-falling slab drainage system for a building jump, including a first-floor drainage system and a second-floor drainage system. The first-floor drainage system includes a first-floor drainage pipe assembly. The lower part is respectively connected with the upper general drainage pipe, the first floor toilet sewage pipe and the first lower general drainage pipe; the secondary drainage system includes horizontal pipe drainage components and secondary drainage pipes connected to the horizontal pipe drainage components and located on both sides components and water seal components, the upper part, side part and lower part of the secondary drainage pipe assembly are connected with the first lower general drainage pipe, the secondary toilet sewage pipe and the horizontal pipe drainage assembly respectively, and the horizontal pipe drainage assembly is connected with the second The main drainage pipes in the lower layer are connected; the interior of the horizontal pipe drainage assembly is a flat cavity structure, and the bottom surface of the cavity structure is inclined. Therefore, by adopting the horizontal pipe drainage assembly with a flat cavity structure, the occupied space is small, and drainage can be realized without lowering the floor.

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 discloses a low-noise groove diversion type vortex joint. The low-noise groove diversion type vortex joint comprises an upper body, a main body and a lower body, wherein the upper body and the main body are connected through a thread; the upper body and the lower body are combined to a vertical pipe water flowing channel; a transverse pipe water flowing channel is formed in the main body; a transverse pipe lateral water inlet baffle plate is arranged at one side of the transverse pipe water flowing channel; a main body water inlet is formed in the other side of the transverse pipe water flowing channel; the main body and the lower body are connected through a thread; a conical transition section is arranged at the lower part of the lower body; and a lower body water outlet is formed in the lower part of the conical transition section. The low-noise groove diversion type vortex joint has the advantages of high drainage flow, low drainage noise, saving of building area, reduction of comprehensive cost, energy conservation and environmental protection.

The invention provides a roller-type washing and drying machine comprising a rotation barrel which has multiple through holes on surrounding walls, a water holding trough of the rotation barrel, an air supplying unit for supplying the air to the rotation barrel, a heating unti for heating the air, an air supplying path for guiding the heated air to the water holding trough, a heat exchange path for guiding the air to the air supplying unit and dehumidifying, and a control unit for controlling each process, wherein the water holding trough comprises a recess arranged on the back of the water holding trough, and a water path which extends along the rotating direction during the dehydration process and is connected with the recess; and as the turbulence is generated when the water in the crack between the undersurface of the rotation barrel and the back of the water holding trough runs into the fault wall of the recess of the water holding trough, the invention can prevent the situation during the dehydration process, thus significantly reducing the uncomfortable dewatering noise during the dehydration process and realizing stable performance for dewatering.