35results about How to "Reduce water noise" patented technology

The present invention relates to floating type energy-dissipating noise reduction equipment. It is formed from noise-reducing honeycomb plate, supporting skeleton and floating body. The noise-reducing honeycomb plate is placed on the supporting skeleton, the floating body is placed under the supporting skeleton, and the whole floating type energy-dissipating noise reduction equipment is placed in the water pool of cooling tower, and the distance of lower end of noise-reducing honeycomb plate from level of water pool is less than or equal to 200 mm. Besides, said invention also provides the concrete structures of noise-reducing honeycomb plate, supporting skeleton and floating body, and the concrete working principle of said energy-dissipating noise reduction equipment.

A floor drain able to prevent the foul air and sewage from escaping out and the sewer from being blocked is composed of a main body with cavity having open top, enclosed bottom and lateral water outlet tubes, a ring cover of said main body, a square cover with central top hole and a ring matched with the hole of said ring cover, a water storage pipe in said cavity of said main body, an arched floating circular sheet in said water storage pipe, and a barrier cover with patterned water holes.

A floating energy dissipation and noise reduction device, which is composed of a noise reduction honeycomb panel, a supporting frame, and a floating body. The noise reduction honeycomb panel is arranged on the supporting frame, and the floating body is arranged under the supporting frame. Placed in the pool of the cooling tower, the distance between the lower end of the noise-reducing honeycomb panel and the water surface of the pool is 100-110 mm; the noise-reducing honeycomb panel is composed of several pieces of PVC plastic molding boards, and there are several open ends on it. Special-shaped pipes, each special-shaped pipe is provided with a collection pipe, an inclined-surface noise reduction pipe, and a curved energy-dissipating pipe from top to bottom, and multi-stage energy-dissipating grooves and shunt grooves are arranged on the curved surface energy-dissipating pipe; the supporting frame is made of several FRP I-shaped Profiles, connecting rods, and spacers are connected into a frame structure; since the device is placed in the pool of the cooling tower, the distance between the lower end surface of the noise-reducing honeycomb panel and the water surface of the pool is a constant value, which can effectively prevent the secondary noise of falling water generated, and the noise reduction effect is stable.

The invention relates to a water discharging device and a cooling fan, and relates to the technical field of cooling fans. According to the mainly adopted technical scheme, the water discharging device is used in the cooling fan and comprises a first water discharging tank used for guiding output water of a water pump pipeline in the cooling fan into a wet curtain. A first water inlet is formed in the top of the first water discharging tank, and first water discharging openings are formed in the bottom of the first water discharging tank. At least part of flow guide structure is arranged in the first water discharging tank, and the flow guide structure is used for guiding the output water of the water pump pipeline into the first water discharging tank. The output water of the water pump pipeline in the cooling fan directly falls onto the flow guide structure and flows into the first water discharging tank along the flow guide structure. The water discharging device is mainly used for lowering water discharging noise in the cooling fan, then the noise of the cooling fan is lowered, and user experience is improved.

Disclosed is a joint tongue plate provided with a mechanical lock catch and a paving method of the joint tongue plate. The joint tongue plate provided with the mechanical lock catch comprises an upper joint tongue plate and a lower joint tongue plate. The upper joint tongue plate comprises a first cystosepiment, a first plastic plate, first protrusions and second protrusions. The lower joint tongue plate comprises a second cystosepiment, a second plastic plate, first protrusions and second protrusions. The first plastic plate is arranged on the first cystosepiment. The second plastic plate is arranged on the second cystosepiment. The first protrusions are arranged on the first plastic plate and the second plastic plate. The second protrusions are arranged on the first cystosepiment and the second cystosepiment. The first cystosepiment is provided with second bosses. The second cystosepiment is provided with fourth bosses. According to the joint tongue plate provided with the mechanical lock catch, ground thermal insulation and flow noise reducing can be effectively achieved, meanwhile, the pressure of ground loading for a water heating pipe can be reduced, the structure of the mechanical lock catch can make the two joint tongue plates be firmly fixed, and the phenomenon of displacement can not happen.

The invention discloses a building same-floor water drainage collection device. A water drainage groove draining water towards a water drainage vertical pipe in an inclined manner is formed in the collection position of a water drainage transverse pipe and the water drainage vertical pipe. A water seal baffle is arranged in the water drainage transverse pipe. The water drainage transverse pipe comprises a water accumulation cavity and a buffer cavity. The water accumulation cavity is formed in one side of the water seal baffle, and the water drainage groove is formed in the other side of the water seal baffle. The buffer cavity is located between the water accumulation cavity and the water drainage groove and is higher than the water accumulation cavity and the water drainage groove. The water accumulation cavity communicates with the buffer cavity. The buffer cavity communicates with the water drainage groove. The water drainage groove and the water accumulation cavity are converged at the lower end of the buffer cavity. The water drainage groove intersects with the water drainage vertical pipe. The buffer cavity intersects with the water drainage vertical pipe. By means of the building same-floor water drainage collection device, building same-floor water drainage can be achieved, gas flow in the water drainage vertical pipe and gas flow in the water drainage transverse pipecan be integrated and unblocked, the pressure fluctuation of the water drainage vertical pipe is effectively reduced, the water flow speed of the water drainage vertical pipe is decreased, the water drainage capacity of the water drainage vertical pipe is substantially increased, and the water flow noise of the vertical pipe is reduced.

The invention discloses a helical water pump volute chamber structure of an engine water pump, wherein a center of the volute chamber part is an area where an impeller are installed, the impeller is surrounded between a rotary contour line of the impeller and the outer wall of the volute chamber to form a helical water intake channel and a helical water drainage channel connected in sequence, the width of the water intake channel increases gradually and the channel from the water intake channel to the water drainage channel deepens gradually, a separation tongue is designed at the junction of the start point A of the water intake channel and the start point B of the water drainage channel to separate two channels. The structure can thoroughly solve the liquid backflow problem at the junction of inlet and outlet without forming vortex area, and simultaneously reduce resistance of water streams in all directions to promote the efficiency of water pump and lower the noise of water stream.

The invention relates to the technical field of automobile engine cooling water pumps, in particular to an energy-saving automobile engine cooling water pump. The energy-saving automobile engine cooling water pump comprises a pump case, and the pump case is provided with a bearing seat, a water seal seat, a spiral flow channel, a water leakage hole, an installation hole and a sealing groove; and a shaft connection bearing is installed on the bearing seat of the pump case, a transmission flange plate is installed on a journal at the left end of the shaft connection bearing, a water seal is installed in the middle of a journal at the right end of the shaft connection bearing and on the water seal seat of the pump case, a screw hole is formed in the end face of the journal at the right end of the shaft connection bearing, an impeller is installed on the journal at the right end, and blades of the impeller are located on one side of a water inlet of the impeller. According to the energy-saving automobile engine cooling water pump, the problems that existing automobile engine cooling water pumps are high in noise, low in work efficiency and large in power loss are solved.

The invention relates to a liquid diversion distributor. The liquid diversion distributor comprises a distribution head and a casing pipe coating the distribution head. A distribution head main body is a hollow circular tube, the lower part of the outer wall of the hollow circular tube is provided with an annular first boss, the first boss is provided with a plurality of opening grooves, the grooves helically extend down to the bottom of the tube wall from the upper edge of the first boss along the first boss and the outer wall of the hollow circular tube and is used for diversion, the casing pipe is a hollow circular tube, the inner wall of the casing pipe corresponding to the first boss is provided with an annular inner boss, the inner diameter of the inner boss fits to the outer diameter of the first boss, the upper end of the casing pipe is connected to the outer wall of the hollow circular tube of the distribution head through spot welding, the lower end of the casing pipe is welded to the outer wall of the hollow circular tube of the distribution head, the grooves are provided with holes for diversion, and the hollow circular tube of the distribution head is coaxial with the longitudinal axis of the casing pipe. According to the liquid diversion distributor, a liquid flows down in a spiral way so that the liquid uniformly flows down and forms a film on the pipe inner wall so that evaporation efficiency is improved, the pipe wall is uniformly heated, the damage rate is reduced and a service life is prolonged.

An energy saving and noise reduction cooling tower capable of achieving mechanical ventilation and high-position water collection comprises a cooling tower body, a ventilating duct, a fan, supporting legs, a motor, a fan platform, a water collection tank hanging beam, a water distribution pipe, a water feeding pipe, a water collection tank hanging rod, packing, a splashing device, a water collection tank hanging support, water collection inclined plates, a splashing preventer and water collection tanks. The cooling tower has the beneficial effects that a water baffle is arranged at the upper side of each water collection tank, so that cooling water drops can be prevented from splashing to the outer sides of the water collection tanks conveniently; a water collecting tank at the bottom of a conventional cooling tower is omitted from the cooling tower body and replaced with the water collection tanks, so that water seepage is prevented from soaking a foundation conveniently; the multiple water collection tanks are arranged, so that after cooling water passes through the packing, and the cooling water is collected by water collection devices; the splashing preventer is provided with a plurality of sound absorption holes, so that noise generated by water falling when the cooling tower works is adsorbed conveniently; and the surfaces of the water collection inclined plates are provided with flow guide grooves, and each water collection tank is provided with one water collection inclined plate, so that the water drops falling from the packing can be intercepted and collected conveniently.

The invention belongs to the technical field of ejectors, in particular to a radial ejector. The radial ejector comprises an ejector shell, a suction chamber, a mixing chamber and an ejection chamberare arranged in the ejector shell, and the suction chamber and the ejection chamber are arranged in parallel. The mixing chamber is arranged below the ejection chamber and communicates with the suction chamber. An ejection pipe is arranged in the ejection chamber, an ejection opening is formed in the radial side of the ejection chamber, and a suction opening is formed in the side, opposite to theejection opening, of the suction chamber in the radial direction and is connected with injection medium fluid. A nozzle is arranged at the bottom of the mixing chamber, and connected with work mediumfluid. According to the radial ejector, the length of a pump is shortened, performance reduction caused by the axial mounting size errors of the nozzle and a spraying pipe is avoided, and the performance of the ejector is improved; and water flow ejection noise is isolated through an ejector shell, and the water flow noise of the product is lowered.

The invention discloses a noise control device arranged in a water cooling tower, and belongs to the environment-friendly field. The noise control device comprises noise elimination bodies and a supporting frame, wherein the noise elimination bodies are arranged on the supporting frame; the noise elimination bodies are distributed in the water cooling tower; and the bottoms of the noise elimination bodies are positioned below the water surface of a water storage tank. A plurality of layers of conical noise elimination bodies at different heights are arranged on the supporting frame, next layer of the conical noise elimination bodies is arranged in a space formed by the upper layer of the conical noise elimination bodies, and the lower parts of the noise elimination bodies at the lowest layer are arranged below the horizontal plane of the water storage tank of the water cooling tower, so that water dropping from the water cooling tower cannot directly drops onto the horizontal plane of the water storage tank of the water cooling tower; and damping noise-eliminating materials are adhered on the surfaces of the conical noise elimination bodies, so that water dropping noises are greatly reduced, and ventilating heat-radiating can be realized while noises are controlled.

The invention discloses a PP (polypropylene) internal spiral pipe for drainage. The PP internal spiral pipe comprises a pipe body made of a PP material, wherein the PP material is prepared from raw materials in parts by weight as follows: 25-30 parts of PP aggregates, 50-60 parts of barium sulfate, 13-18 parts of montmorillonite and 1-3 parts of a dispersing agent; a plurality of spiral ribs are arranged in the circumferential direction of the inner wall of the pipe body, a radial section structure of each spiral rib is a half-crescent structure with an arc top, an inner concave surface of the half-crescent structure and a spiral trend of the spiral rib are located in the same plane, two sides of the root part of the spiral rib are in circular arc transition connection with the inner wall of the pipe body, and a screw pitch of the spiral rib is 60-100 cm. According to the PP internal spiral pipe for drainage, water passing capacity is greatly enhanced, and water flow noise is greatly reduced. The invention further discloses a preparation method of the PP internal spiral pipe for drainage.

The invention relates to a minimum flow valve, in particular to a pump outlet minimum flow valve. The pump outlet minimum flow valve comprises a main flow pipe and a branch flow pipe, the branch flow pipe is fixedly connected to the main flow pipe, the branch flow pipe is closed when the main flow pipe is completely opened, the branch flow pipe is opened when the main flow pipe is partially opened, and a noise reduction structure is fixedly connected into the main flow pipe. The pump outlet minimum flow valve further comprises an inner ring seat and a gate plate, the inner ring seat is fixedly connected into the main flow pipe, the gate plate is fixedly connected to the inner ring seat, and the main flow pipe is closed when the gate plate is pressed on the inner ring seat. The pump outlet minimum flow valve further comprises a round rod, a door frame and a round piece, the upper portion of the main flow pipe is fixedly connected with the door frame, the upper side of the gate plate is fixedly connected with the round rod, the round rod is vertically connected to the door frame in a sliding manner, the round rod is sleeved with a compression spring I, the compression spring I is located between the door frame and the gate plate, and the upper end of the round rod is fixedly connected with the round piece. The pump outlet minimum flow valve further comprises a circular ring and a blocking head, and the circular ring is fixedly connected to the center of the upper side of the gate plate.

The invention discloses a valve element convenient to install. The valve element convenient to install comprises a valve element body; an opening portion is arranged at the upper end of the valve element body; an annular groove is formed in the bottom of the valve element body; threads are pressed on the periphery of the opening portion; the joint of the opening portion and the valve element bodyis a transition segment; the position of the transition segment is provided with a first water passing port; a second water passing port is formed below the first water passing port; convex blocks arearranged on the shoulder parts of the valve element body; and a fixed guiding sleeve is arranged outside the opening portion, and is provided with a chuck. The valve element convenient to install hasthe beneficial effects that the structure is simple, installing and fixing are facilitated due to the fixed guiding sleeve arranged outside the opening portion, the safety of the valve element is improved, the diameter of the second water passing port is larger than that of the first water passing port, and therefore the water flow noise, generated due to pressure, at the water outlet position ofthe valve element is effectively reduced, and the stability of the valve element is improved due to the arrangement of the convex blocks.

The invention discloses a high-efficiency low-noise light-emitting shower head comprising a shower head body, a hydraulic electricity generation device located in the shower head and a light-emitting device installed on the shower head. The hydraulic electric generation device comprises an impeller and an electricity generation assembly connected with the impeller. The light-emitting device is electrically connected with the electricity generation assembly. An impeller cavity is arranged in the shower head body. The impeller is located in the impeller cavity. The impeller cavity is provided with a water inlet and a water outlet. The water outlet is of an arc long-strip-shaped structure or an annular structure arranged along the circumference of the impeller and arranged outside one end of each blade of the impeller in a matched manner. According to the high-efficiency low-noise light-emitting shower head, after water enters the impeller cavity, the impeller can be driven to rotate at a high speed, and water can be discharged in time and cannot generate swirl distribution in the impeller cavity; and in this way, the rotation speed of the impeller is improved, the electricity generation efficiency of the electricity generation assembly is improved, the luminance of the light-emitting device is improved, and the noise generated by a water stream in the impeller cavity through impact can be greatly lowered.

The invention discloses a waterway noise reduction device and a water heater comprising the waterway noise reduction device, the waterway noise reduction device comprises a cavity, and the cavity is used for buffering water flow to reduce noise of the water flow; the cavity comprises an inlet and an outlet, and the cross section area of the cavity in the water flow direction is larger than that of the inlet. According to the waterway noise reduction device, through the cavity, the impact of water flow on the inner wall of the cavity is buffered, so that the water flow noise is reduced; the cross sectional area of the cavity in the water flow direction is set to be larger than that of the inlet to form a structure with a large cavity and a small inlet, so that the cavity has a space larger than that of the inlet for buffering water flow, and the effect of reducing water flow noise is improved.

The invention discloses a high-water-tank full-automatic ultrafast washing machine. The high-water-tank full-automatic ultrafast washing machine comprises a washing machine body, a water supplementation thick pipe, a water supplementation valve, a water supplementation barrel, a floater, a water inlet valve, a water inlet pipe, an instruction transmission line, a circuit board and a water drainage opening. The high-water-tank full-automatic ultrafast washing machine is mainly characterized in that the water supplementation valve is controlled to be closed and opened through an opening and closing program saved in the circuit board; the washing machine body is rapidly filled with water flow in the water supplementation barrel located at a high position through the large-caliber water supplementation thick pipe, and the problem that an existing washing machine is too long in water adding time and too large in water adding noise is well solved.

The invention discloses a low-noise mechanical ventilation cooling tower which comprises a cooling tower body, a water supply and distribution system, an electronic element assembly and a water falling silencing device are arranged in an inner cavity of the cooling tower body, a fan system is arranged at the top of the cooling tower body, and a water pool is arranged at the bottom of the cooling tower body. And the water falling silencing device is arranged above the water tank. The fan system is adopted to replace an original large fan, the fan noise is reduced, meanwhile, the water falling silencing device is installed in the tower, the water spraying noise is reduced, and therefore the purposes of reducing the noise of the cooling tower and improving the energy efficiency are achieved.

The invention belongs to the technical field of river dams, and discloses a folding type noise elimination gate. The folding type noise elimination gate comprises a steel gate plate, a folding door plate and a plurality of telescopic connecting rods. A first base is hinged to one end of the steel gate plate, and the first base is connected with the water bottom base surface. One end of the foldingdoor plate is hinged to a second base. The second base is connected with the water bottom base surface. The folding door plate is provided with a folding portion. One end of each telescopic connecting rod is connected with the water bottom base surface through a third base, and the other end of each telescopic connecting rod is hinged to the folding portion. The telescopic connecting rods are hinged to the third base. According to the folding type noise elimination gate, the flow relief opening degree of the gate can be adjusted through the telescopic connecting rods, and for the drainage when the gate is opened due to the full condition, a slope which is beneficial to the drainage can be formed, so that the noise of the water flow is reduced to the minimum, and the drainage noise of theurban river channel is eliminated.

The invention relates to the technical field of valves, in particular to a flow stabilizing assembly, an H-shaped water return valve and a zero-cold water heater. The flow stabilizing assembly comprises a base body and a cover body, wherein the base body is used for being installed in a fluid channel, and the side wall of the base body is attached to the side wall of the fluid channel; a mountinggroove is formed in the base body, and the cover body covers a notch of the mounting groove; and a fluid passing hole is formed in the cover body, a through hole is formed in the groove bottom of thebase body, a flow guide column is arranged on the cover body, the flow guide column can be inserted into the through hole, and a flow guide channel is formed between the through hole and the flow guide column. The H-shaped water return valve comprises the flow stabilizing assembly. The zero-cold water heater comprises the H-shaped water return valve. According to the flow stabilizing assembly, theH-shaped water return valve and the zero-cold water heater, the problem of false starting of a water heater main body is relieved, the water flow noise of a cold water terminal can be reduced, and the user experience is improved.

The invention discloses a sedimentation tank device with a sedimentation wall. The sedimentation tank device with the sedimentation wall comprises a sedimentation tank. A water inlet distributing trough and a water outlet collection channel are arranged on the two inner side walls of the sedimentation tank in the length direction respectively, the inclined hole sedimentation wall which is installed at the bottom of the sedimentation tank and divides the sedimentation tank into two parts is vertically arranged in the middle of the sedimentation tank in the length direction, sedimentation channels penetrating through the two sides of the inclined hole sedimentation wall are evenly formed in the inclined hole sedimentation wall by inclining a certain angle, multiple water inlet distribution pipes extending downwards are arranged at the bottom of the water inlet distributing trough in the length direction, and perforated sludge discharge pipes of which one ends extend out of the sedimentation tank are installed on the portions, on the two sides of the inclined hole sedimentation wall, of the bottom of the sedimentation tank. According to the sedimentation tank device with the sedimentation wall, the problems of difficult uniform water distributing and water collecting, many pool short flow phenomena, many mud-field dead zones, difficult bottom silt discharge, difficult sludge scraping and sucking equipment maintenance and the like existing in common horizontal flow sedimentation tanks, vertical flow sedimentation tanks, radial flow sedimentation tanks and the like are solved, the occupied area is small, and the civil engineering and equipment cost is reduced.

The invention discloses a drainage device on the same floor of a building, which comprises a concentrator and a reinforced swirl three-way pipe; The main pipe and the swirl pipe, the main pipe intersects with the swirl pipe, the main pipe is connected to the upper end of the drainage riser, the upper swirl blade is installed on the inner wall of the main pipe, the lower swirl blade is installed on the inner wall of the drainage riser, the swirl pipe and The swirl directions of the upper swirl blades and the lower swirl blades are the same. The invention can not only realize the drainage of buildings on the same floor, but also enable the water flow of the drainage vertical pipe and the water flow of the horizontal drainage pipe to quickly form a wall-attached swirl flow, so that the airflow in the vertical drainage pipe and the horizontal drainage pipe can be merged smoothly, effectively reducing the drainage. The pressure fluctuation of the standpipe slows down the water flow velocity of the drainage standpipe, greatly increases the drainage capacity of the drainage standpipe, and reduces the noise of the water flow of the standpipe.

The invention discloses a valve core, which comprises a valve core body, an opening is arranged on the upper end of the valve core body, an annular groove is arranged on the outside of the valve core body, a connecting portion is arranged on the periphery of the opening, and the connection between the opening and the valve core body It is a transition section, a first water outlet is opened at the transition section, and a second water outlet is arranged below the first water outlet. The beneficial effect of the present invention is: the structure is simple, the periphery of the opening is provided with a connecting portion, which is convenient for installation, and the diameter of the second water outlet is larger than that of the first water outlet, thereby effectively reducing the water flow at the water outlet of the valve core due to pressure noise.

The invention discloses a drainage concentrator on the same floor of a building. A drainage groove inclined towards the drainage vertical pipe is arranged at the junction of the horizontal drainage pipe and the vertical drainage pipe, and a water seal baffle is arranged in the horizontal drainage pipe; the horizontal drainage pipe includes Water accumulation chamber and buffer chamber, one side of the water seal baffle is the water accumulation chamber, the other side of the water seal baffle is the drainage groove, the buffer chamber is located between the water accumulation chamber and the drainage groove and is higher than the water accumulation chamber and the drainage chamber In the water tank, the water accumulation chamber communicates with the buffer chamber, the buffer chamber communicates with the drainage groove, and the drainage groove and the water accumulation chamber meet at the lower end of the buffer chamber; the drainage groove intersects with the drainage riser, and the buffer chamber intersects with the drainage riser. The invention can not only realize the drainage of buildings on the same floor, but also make the air flow in the vertical drainage pipe and horizontal drainage pipe merge smoothly, effectively reduce the pressure fluctuation of the drainage vertical pipe, slow down the water flow speed of the drainage vertical pipe, and greatly increase the drainage of the drainage vertical pipe ability to reduce the noise of water flow in the standpipe.

The invention provides a baffle ring for noise reduction of a washing machine. The baffle ring is in an annular curved surface shape and comprises an outer ring surface and an inner ring; the outer ring surface is matched with the inner wall of a washing barrel of the washing machine; the inner ring comprises an upper inclined surface, a lower inclined surface and a transition surface; the upper inclined surface and the lower inclined surface are connected with the outer ring surface separately; and the transition surface is arranged at the junction of the upper inclined surface and the lower inclined surface. The baffle ring is in a curved surface shape and is arranged in the washing barrel of the washing machine, so that water flow noise caused by up-down and left-right turning of the water surface due to repeated rotation of an impeller can be reduced, and noise and vibration caused by water flow impact are reduced.

The invention discloses a water tank (100) capable of reducing noise. The water tank (100) comprises a water storage chamber (101). A water inlet pipe (102) communicated with the water storage chamber (101) is arranged on the outer side of the water tank (100). A silencing pipe (103) communicated with the water inlet pipe (102) is arranged in the water storage chamber (101). A plurality of water leakage holes (104) are distributed in the silencing pipe (103). At least one silencing cylinder (105) is arranged on the outer side of at least part of the silencing pipe (103). By means of the water tank, when a water supply system injects water into the water tank (100), noise of water flow flowing into the water storage chamber (101) from the water inlet pipe (102) can be reduced or eliminated.

A moistening bottle with separable outlet for continuous oxygen supply when the moistening bottle is exchanged is composed of bottle body, oxygen inlet and outlet jointer, moistening core, moistening cap, safety block, plug with external spiral thread, connection cap, connection socket, sealing ring, gasket seals for socket and cap, retainer ring for safety valve, and oxygen inlet and outlet tubes.

The invention discloses a high damping polyvinyl chloride material and a method for preparing pipes with the high damping polyvinyl chloride material. The high damping polyvinyl chloride material contains polyvinyl chloride resin 100 portions, heat stabilizer 0.4 to 0.6 portions, lubricant 2.0 to 4.0 portions, filler agent 2.0 to 4.0 portions, damping modifier 10 to 14 portions and silane coupling agent 0.4 to 0.6 portions in weight unit. The polyvinyl chloride has better damping performance and higher softening temperature after being modified, particularly with the damping modifier being added, so that the polyvinyl chloride material can reduce the noise of water flow and resist stronger impact and improve the safety of pipe operation. Meanwhile, the method for preparing the pipes in the invention is in simple process and easy operation.