98results about How to "Eliminate noise pollution" patented technology

Provided is a mobile lighting device that can derive power from a renewable energy source, such as solar power. The device can comprise a mobile base unit that can house one or more components of the device. The device further can comprise a solar power module associated with the mobile base unit that converts solar energy into electrical current. The device also can comprise a lighting module associated with the mobile base unit that is at least partially powered either directly or indirectly using the electrical current from the solar power module. The device further can comprise a solar power storage module, such as comprising one or more batteries, for storing energy and discharging as electrical current for powering the lighting module, which can be positioned atop a mast that can be extendable, pivotable, and / or rotatable. The invention also provides methods and systems for illuminating areas.

The invention relates to an automatic pressure adjustment type pulse signal acquisition device and method based on multiple sensors. The acquisition device comprises a base, a wrist support, a slideable adjusting mechanism, a sensor fixing mechanism supporting column, a sensor fixing mechanism, a stepping motor driver, a stepping motor, pulse sensors, a signal preprocessing circuit, a single-chip microcomputer and a computer, wherein the wrist support and the slideable adjusting mechanism are arranged on the base; the sensor fixing mechanism is arranged on the slideable adjusting mechanism through the sensor fixing mechanism supporting column; the pulse sensors comprise a cun position pulse sensor, a guan position pulse sensor and a chi position pulse sensor, which are independently connected onto the sensor fixing mechanism respectively; the signal preprocessing circuit, the single-chip microcomputer and the computer are sequentially connected, and the single-chip microcomputer, the stepping motor driver, the stepping motor and the sensor fixing mechanism are sequentially connected. Compared with the prior art, the automatic pressure adjustment type pulse signal acquisition device and method based on multiple sensors have the advantages that the measured signals are accurate, the automatic search of the best pulse feeling force is realized and the like.

A high-pressure cleaning machine comprises a machine body, a cleaning part and a transmission part, wherein the cleaning part and the transmission part are arranged in the machine body; the cleaning part comprises a spray nozzle and a water pump; a water inlet of the spray nozzle is connected with a water outlet of the water pump by a pipeline; the output water pressure of the water pump is 0.75MPa to 1.6MPa; the water surface sprayed from the water outlet of the spray nozzle is the fan-shaped mist liquid water surface; the high-pressure fan-shaped mist liquid water surface forms a water knife; and the spray nozzle is arranged beside the position of the transmission part. The high-pressure cleaning machine is used for cleaning hard magnetic and ferrite magnetic materials. The device can overcome the inherent concepts of people in the technology field, and the usage of the invention can have energy conservation, environmental protection and good cleaning effect.

A compressed air profiling blowing device is used for blowing automobile bodies subjected to a rainfall test, and comprises a portal frame, a top profiling blowing mechanism, a side profiling blowing mechanism, a top guide mechanism, a side guide mechanism and a compressed air circuit. The top profiling blowing mechanism is mounted at the lower end of the top guide mechanism which is fixed onto a crossbeam of the portal frame, each of the side profiling blowing mechanism and the side guide mechanism comprises a left portion and a right portion in symmetry, the side profiling blowing mechanism and the side guide mechanism are fixed inside vertical columns on two sides of the portal frame, and the side profiling blowing mechanism and the side guide mechanism which are positioned on the same side are fixedly connected with each other. The compressed air circuit is arranged along the outside of the portal frame, and an air storage tank is connected to the tail end of the compressed air circuit. By means of the compressed air blowing and profiling technique, water drops on automobile bodies can be easily blown down, and the compressed air profiling blowing device is effective in blowing, simple in structure, convenient in mounting and low in investment cost.

The invention discloses an intelligent monitoring system for a power cable production process. The system comprises an image acquisition assembly, a sensor assembly, a wireless transmission module, anintelligent monitoring center and a danger alarm module. The sensor assembly is used for collecting environmental data and temperature data of the surface of power cable production equipment And transmitting the acquired data to the intelligent monitoring center; the intelligent monitoring center processes the received data and compares the processed data with a preset safety threshold value; andwhen the data is higher than a preset safety threshold value, the danger alarm module gives an alarm, image acquisition is carried out on the position where the sensor node for acquiring the data islocated through the image acquisition assembly, and the acquired image is displayed after being processed. The beneficial effects of the invention are that the system achieves the effective monitoringof the environment of a power cable production workshop and the operation state of power cable production equipment, and improves the monitoring intelligence of a power cable production process.

The invention discloses an electrocardio signal identification method and system based on multi-feature sparse representation. The method comprises the following steps: acquiring an electrocardio signal to be identified; performing noise cancellation processing on the electrocardio signal to be identified; performing cadence processing on the noise cancelled electrocardio signal to be identified to obtain a plurality of single-period electrocardio signals; performing multi-feature extraction on each single-period electrocardio signal; inputting all features obtained in extraction into an alternating direction method of multipliers, performing coefficient solving with multi-feature sparse representation to finally obtain an optimized coefficient matrix; and inputting the optimized coefficient matrix into a pre-trained classifier, and outputting an identification result.

The invention discloses an aluminum wheel low-pressure casting water cooling die. A center die insert 8 is provided with a water cooling channel 9 for cooling the wheel center; a water cooling channel 7 for cooling the inner rim is arranged at the upper part of a head die 5; a lower edge die 2 is provided with a water cooling passage 3 for cooling a wheel hot spot. The casting technology mainly includes a slow-to-quick mold filling technology and a water-to-air cooling technology. According to the invention, the performance quality of the aluminum alloy wheel casting is improved, and the performance quality of the casting is greatly improved in stability and consistency due to the adoption of the slow-to-quick mold filling technology and the water-to-air cooling technology; the high water cooling intensity increases the freezing rate of the casting, thereby increasing the casting production efficiency; cooling water flows in the water cooling channels relatively sealed, so that noise pollution caused by compressed air in the air cooling technology is eliminated, and the casting working condition is improved.

The invention discloses a laser radar sensing illumination system comprising a laser radar scanning device, a control center and an illuminating lamp. The laser radar scanning device comprises a laser emission module and a laser reception module. The control center comprises a master control circuit module and a PLC controller. The laser radar sensing illumination method comprises the following steps: an optical radar scanning device scans in the monitoring area and sends the scanning data to the master control circuit module; the master control circuit module receives the scanning data, obtains the distance of a monitoring target through calculation, and sends the distance information of the monitoring target to the master control circuit board; the PLC controller receives the monitoring target distance information and judges whether there is a moving object in the monitoring area according to the distance information, and sends a starting instruction to a lighting lamp if the PLC controller detects that there is a moving object in the monitoring area; and the lighting lamp receives the starting instruction of PLC controller and turns on the circuit lighting. Noise pollution due to sound control illuminating lamps can be eliminated, and convenience and rapidness are realized.

The invention relates to a metal foam aluminium plate including a foam aluminium plate having an aluminium plate with joined silk screen and irregular pylomes, which is characterized in that a metal plate combines with the aluminium plate. The metal foam aluminium plate manufactures the foam aluminium plate with irregular pylomes using special technology in order to lower the density. Lightweight materials lighter than water can be made on the basis of need. The invention is convenient to use, especially applies to finishing materials used in wallboard indoor and outdoor, floors, ceilings and so on, and structure and finishing materials of vehicles like ships, trains, automobiles. Absorption effect is better than other sound-absorbing materials (like glass fiber, plastic foam ) in the low-frequency range. A high Stiffness can be get without other metal materials to support, and aluminium can be retrieved and recycled after unloading adornment.

The invention discloses a public-transport people flow counting method based on optical-flow counting. The method includes the following steps: 1, carrying out compression and format unification on acquired surveillance video images; 2, preprocessing the surveillance video images after format unification; and 3, obtaining, by counting, the number of people getting on / off a bus. A public-transportpeople flow counting system based on optical-flow counting disclosed by the invention includes an image collection unit, a video compression unit, an image preprocessing unit and a moving-target detection unit. According to the counting system and method, noises pollution generated by a bus surveillance system due to bus body shaking or illumination shadow changing in shooting and acquiring the images is eliminated through preprocessing the color surveillance video images, an area where a moving target is located is obtained by calibration through utilizing a moving-target area locating algorithm, optical-flow calculation is carried out on the calibrated area, and an optical-flow solving operation amount is greatly decreased.

The invention discloses a safe sensing illumination system. The safe sensing illumination system comprises a laser radar scanning device, a control center and an illumination lamp, wherein the laser radar scanning device comprises a laser emission module and a laser reception module, the control center comprises a main control circuit module, a PLC and an alarm prompting module, and the illumination lamp is provided with a current sensor. The invention further discloses an illumination method. The illumination method mainly comprises steps that a distance of a monitored target is acquired through the laser radar scanning device and the main control circuit module and is sent to the PLC, whether a monitored region has a moving object is determined by the PLC according to the distance information, and a start instruction is sent to the illumination lamp when the moving object exists according to a monitoring result; the illumination lamp is conducted to realize illumination; and a work state of the illumination lamp can be monitored in real time through the current sensor. According to the safe sensing illumination system, a problem of noise pollution caused by a sound control illumination lamp can be eliminated, the safe sensing illumination system is convenient and rapid, and management staff or a user can be prompted through the alarm prompting module so as to carry out timely maintenance and replacement of the illumination lamp.

The invention discloses a channel large-diameter steel pipe delivery device which belongs to the vehicle body structure with self-unloading function for carrying oblong goods. A direct current motor, a reducer, a clutch, a transmission turning device of a driving part of the delivery device are arranged at the rear of a vehicle frame; an active walking wheel of a walking part of the delivery device is arranged at the half part of the back of the vehicle frame; a driven walking wheel is arranged at the front end part of the vehicle frame; a steering part of the delivery device is arranged at the front end part of the vehicle frame; the front stinger and the back stinger of a bearing part of the delivery device and the front hydraulic ram and the back hydraulic ram of an unloading part of the delivery device are respectively arranged right above the driven walking wheel and the active walking wheel; a direct current power supply of the delivery device is arranged at the middle part of the vehicle frame; an electric control box of an electric control part of the delivery device is arranged at the back end part of the vehicle frame; an operation control box is held by operators by hand. The device is specially applied to transporting the steel pipe into the channel when the large-diameter steel pipe road is paved, can automatically unload and pave the pipe, has the high automation performance, the non-channel operation, the adjustable steering, the safety and reliability without causing noises and can easily pass by the winding segments of the channel. The device is the electromechanical integrated channel delivery device of the pipeline construction with the independent innovation.

The invention discloses a slip form construction method of large-fluidity paving concrete for subway rail base. The large-fluidity paving concrete and a slip form paving machine which is adaptive to the performance of the concrete are applied. The method comprises the following steps that, (1) the slip form paving machine for the subway rail base concrete is in position and debugged; (2) the large-fluidity paving concrete is prepared and transported; (3) the concrete is loaded into a material storage bin, and the slip form paving machine is tested to carry out the slip form; (4) the slip formpaving machine is operated, and the linear shape and flatness of the concrete base are detected; and (5) the surface of the base concrete is finished and maintained. According to the slip form construction method for subway base concrete, the method is low in energy consumption, low in noise pollution and capable of continuously constructing, the automation degree of the construction process is improved, the consumption of manpower and material resources is remarkably reduced, and the method has extremely high popularization and application values.

The invention relates to a low-air-consumption rich nitrogen recycling and nitrogen production apparatus and a production method. The low-air-consumption rich nitrogen recycling and nitrogen production apparatus consists of an air supercharging system (1), a negative pressure releasing system (2) and a rich nitrogen recycling system (3). The air supercharging system improves the adsorption capacity of a molecular sieve; by adopting the negative pressure releasing system, the step of back flushing pure nitrogen to replace residual gas in an adsorption tank can be omitted, and the resource waste can be reduced; the adsorption capacity of the molecular sieve is further improved by virtue of the negative pressure releasing system; nitrogen-rich gas discharged by releasing the pressure and unqualified nitrogen can be recycled and reenter the apparatus to be purified and utilized; and the apparatus controls various systems to work according to programs by virtue of a programmable controller. By virtue of the systems, the apparatus recycles, purifies and utilizes the rich nitrogen, achieves an effect of producing the nitrogen with low air consumption and has the advantages of small size, high nitrogen yield, low operation cost, low investment, no noise and the like.

The invention relates to a noise control system and method for a compressed type garbage truck. The method comprises the steps of using a PLC to control states of a hydraulic control valve with controllable flow, a scraper opening control unit, a sliding plate downlink control unit, a scraper closing control unit and a sliding plate upstream control unit, and enabling the operation process of eachcylinder to be slow in speed-fast in speed-slow in speed-in place. The sound of cylinder impact during loading is completely eradicated and the noise is reduced.

The present invention discloses a terminal and a method for controlling audio alarm of the terminal. The method comprises detecting whether a valid wireless signal can be received, and setting said terminal to a non-audio alarm mode when it is determined that said valid wireless signal cannot be received. With the terminal and the method of the present invention, it is possible to suppress noise pollution caused by the ringing of the terminal.

The invention relates to a non-air power driven sucker device which comprises a guide rod, a joint, a sucker, a spring and a liner bushing. The guide rod comprises a rod part and a joint part. The joint part is provided with a clamping port used for being clamped into the joint and a joint accommodating hole communicated with the clamping port. A pushing and stopping part is arranged at the free end of the rod part. The sucker is a solid sucker made of silica gel, is arranged at the bottom part of the joint and extends out of the joint part of the guide rod. The spring is assembled on the outer peripheral surface of the rod part of the guide rod and pushed and connected with the joint part of the guide rod. The liner bushing is assembled on the outer peripheral surface of the rod part of the guide rod by being adjacent to the spring, and pushed and stopped at the pushing and stopping part of the rod part with the help of elasticity of the spring. The sucker device can realize adsorption and transportation of objects without being driven by air power, further greatly reduce the equipment cost input, reduce consumption of electrical energy and eliminate noise pollution.

The invention discloses a system and method for continuous and constant blowdown energy collection of a boiler. The system for continuous and constant blowdown energy collection of the boiler comprises a flash tank and an energy collector, wherein the flash tank is connected with a continuous blowdown outlet of the boiler through a continuous blowdown pipeline and connected with a constant blowdown outlet of the boiler through a constant blowdown pipeline; the energy collector is connected with a steam outlet of the flash tank through a steam pipeline; a three-stage heat exchanger is arrangedin the energy collector; a water outlet is connected with a water inlet of the boiler through a water outlet pipeline; and a steam distribution chamber is connected with the steam pipeline through a steam inlet formed in a cylinder. Waste water of the boiler is recovered through the energy collector and then is treated in the flash tank to form steam, water is heated through steam energy, most part of the steam is condensed, and a small part of non-condensed gas is exhausted through an oxygen outlet. The recovery rate of the heat of steam which is continuously or constantly exhausted can reach99%, the heat-exchange efficiency is high, and the energy-saving effect is good; and the system and method for continuous and constant blowdown energy collection of the boiler have the advantages that energy is saved, consumption is reduced, environmental friendliness is achieved, and noise pollution is avoided.

The invention relates to a high voltage capacitor chamber with an adjacent structure. The high voltage capacitor chamber comprises at least three machine rooms which are adjacently connected with each other along the leftward and rightward direction, and is characterized in that the lower part of one machine room on the middle part is provided with an air inlet, wherein the upper parts of the final machine rooms on the left side and the right side are provided with air outlets; an intelligent temperature control ventilation adjuster for supplying air into the room machine is arranged outside the machine room at the middle part and connected with the air inlet; the upper part of a partition wall of two adjacent machine rooms is provided with an air outlet communication port and the lower part of the partition wall is provided with an air inlet communication port; and both the air outlet communication port and the air inlet communication port are provided with bidirectional explosion and fire protection valves. One intelligent temperature control ventilation adjuster is used for simultaneously ventilating and cooling a plurality of high voltage capacitor chambers which are connected adjacently, and controllable small-volume and low-speed air flow is used for ventilating and cooling the high voltage capacitor chamber, so that turbulence or mixed flow of the air flow in the high voltage capacitor chamber is not caused, the ventilating and cooling efficiency is improved, the energy consumption is greatly reduced, and the noise pollution to peripheral environment is eliminated.

The invention belongs to the technical field of draught fans, and relates to a draught fan with damping and noise reduction functions. The draught fan comprises a shell, a bottom plate, a damping mechanism, a first noise reduction mechanism, a second noise reduction mechanism and an adjusting mechanism, wherein an arc-shaped accommodating groove is formed in the head of the shell, a mounting bracket is arranged in the shell, a motor is mounted on the mounting bracket, detachable mesh enclosures are arranged at the front end and the rear end of the shell, two symmetrically arranged first lifting rings are arranged at the top of the shell, two supporting bases, the damping mechanism, the first noise reduction mechanism, the second noise reduction mechanism and the adjusting mechanism are arranged on the bottom plate, the bottom plate is fixedly connected to the top of the damping mechanism, the shell is rotationally connected to the two supporting bases, the adjusting mechanism is fixedly connected with one of the supporting bases, the first noise reduction mechanism is arranged in the arc-shaped containing groove, and the second noise reduction mechanism is arranged on the mountingbracket. According to the draught fan, vibration generated when the draught fan works is counteracted through the damping mechanism, so that the service life of the draught fan is prolonged, noise generated when the draught fan works is absorbed through the first noise reduction mechanism and the second noise reduction mechanism, and noise pollution is eliminated.

The invention discloses a saccharification mixer, which is characterized in that: a radial mixing cross rod is arranged inside a disc-shaped tank; an upwards vertical transmission shaft is arranged in the middle of the mixing cross rod; a gearbox is arranged at the upper end of the transmission shaft; a matched motor is arranged above the gearbox; a plurality of downwards vertical mixing teeth are arranged on the lower edge of the mixing cross rod; an interlayer is reserved at the bottom of the tank and is communicated with a water pipeline through a water inlet and a water outlet; the gearbox is supported by a gearbox bracket; and a supporting stand is arranged on a bottom surface of the tank. The saccharification mixer solves the problems of high labor intensity and high cost in the conventional process of manual saccharification mixing, and is suitable for mixing in the yellow wine saccharification process.

The utility model discloses a hinged bogie with an embedded vibration and noise reduction device, and relates to a railway freight car bogie, in particular to a hinged bogie. The hinged bogie comprises a wheel set assembly, a side frame assembly, a swing bolster assembly, an integrated braking device, an elastic side bearing assembly and a central suspension and vibration reduction device, whereinthe central suspension and vibration reduction device comprises a wedge, a vibration reduction spring, an inner circle spring and an outer circle spring, wherein the vibration reduction spring, the inner circle spring and the outer circle spring are installed on the wedge, and the inner circle spring is sleeved with the outer circle spring. The key technology is that a spring tray is arranged atthe upper end of an inner circle spring and a stabilizing spring is arranged in the spring tray, so that the embedded type damping device is formed. Compared with the prior art, the embedded damping device has the beneficial effects that through the effect of the embedded damping device, the translational degree of freedom of the inner circle spring in the vertical direction is restrained, noise pollution caused by vibration of parts and collision between the parts and adjacent parts is eliminated, and the environmental friendliness of a vehicle is further improved.

The invention discloses a runner type liquid membrane wear ring device of a chemical centrifugal pump. The device is primarily composed of a pump body, an impeller, a runner type liquid membrane wearring of the pump body, a runner type liquid membrane wear ring of the impeller, a pump cover, a pump shaft and a bearing bracket. By arranging runner type liquid membrane grooves formed by a pluralityof rhombi, a pump permeates into a medium to the rhombic liquid membrane grooves in high speed transfer, so that each groove is filled with a medium fluid, the medium can be prevented from reflowingto the inlet of the impeller from the outlet of the impeller as a result of surface tension generated by rotation of the fluid, and therefore, a part of leakage is further prevented, and the work efficiency of the chemical pump is improved. Conventional wear contact surface is changed to rhombic line contact, so that wear is controlled in the minimum contact area range, and meanwhile, a formed fluid diaphragm play a certain lubricating role on the wear ring, so that the wear is further reduced, and the service life of the wear ring is prolonged.

The invention relates to a guide mechanism of a conveying chain. The guide mechanism of the conveying chain comprises conveying chain wheels and the conveying chain connected with the conveying chainwheels in a meshed manner. The conveying chain wheels are rotationally connected with bearing assemblies installed on an equipment support. A lifting support plate is arranged below an upstream chainbody of the conveying chain. A guide rod is fixedly connected with the lifting support plate. The two ends of the guide rod are arranged to be bevel angles, and the inclined faces are upward. The guide rod is parallel to the upstream chain body. When the conveying chain operates, conveying chain rollers slide on the guide rod horizontally. According to the guide mechanism of the conveying chain, the guide rod is a guide device, the chain is connected with the guide rod in a tensioned manner, and therefore a conveying chain system is in the low-wear, low-noise and stable-operation state; due tothe bevel angles at the two ends of the guide rod, the impact force existing when a rod body makes contact with the conveying chain is eliminated; and in this way, the service life of the conveying chain is prolonged, noise pollution is eliminated, and the maintenance and use cost is lowered.

A circuit breaker circular opening and closing indicating lamp image noise filtering method relates to the technical field of power systems, and comprises the following steps: setting a rectangular opening and closing identification area in a circuit breaker circular opening and closing indicating lamp image, and carrying out gray processing on the image in the opening and closing identification area to obtain a gray-scale map; and performing layer-by-layer filtering on the gray scale from the center point of the grey-scale map by adopting an iteration method in combination with the adjacent gray scale average value and the annular gray scale average value so as to remove relatively large noise pollution in the grey-scale map, and taking the grey-scale map obtained after filtering as an opening and closing state recognition image of the circular opening and closing indicator lamp of the circuit breaker. The method provided by the invention is used for identifying the opening and closing state of the circular opening and closing indicator lamp of the circuit breaker in an auxiliary monitoring system of a substation.

An engine belongs to power generating machine without consuming energy sources and discharging contamination. Car body is equispaced with a set of crunode in transverse direction, in which two symmetrical crunode is on piston of crank-connecting rod mechanism, flexibility piece bypasses each crunode, two end of it connect two identical piston of hydraulic cylinder, each piston is communicated with oil recess between hydraulic cylinder shell cover and closed into hydraulic system by a little piston, weight acts on booster input end, larger force of output end is on little piston, hydraulic-oil of hydraulic system produces pressure and compels two piston tend to mobile for tensing flexibility piece, every crunodes are subjected to both sides tension force of flexibility piece, starting motor or car body running rear-wheel spindle drives bent shaft, composite force between tension force of upper crunode of piston which is against car body direction of motion component force and reciprocating mass inertia force of piston side rod acts on crankshaft bearing after crank-connecting rod mechanism converting, component force along car body direction of motion is constant smaller than that of crunode, both tension force composite force of flexibility pieces which is summation or difference of component force is power driving car body moving.

The invention discloses a method for changing an existing roadbed to a tunnel without interrupting the operation of a railway. The method comprises the following steps of: (1) arranging tunnel structure foundations on the two sides of the existing roadbed; (2) erecting an inner formwork on the tunnel structure foundations across the existing roadbed between two adjacent contact net upright posts of the existing roadbed, which are positioned on the same side, by utilizing skylight time; (3) laying a tunnel liner on the inner formwork; (4) adducting the inner formwork, and moving the inner formwork to the position between the next two adjacent contact net upright posts of the existing roadbed along the extension direction of the existing roadbed; (5) moving a contact net conducting wire of the existing roadbed to the top on the inner side of the tunnel liner, and dismantling the contact net upright posts of the existing roadbed; and (6) repeating the step (3) to step (5) till the completion of the laying of the whole tunnel liner above the existing roadbed. According to the method disclosed by the invention, the traffic along the railway can be improved, noise pollution can be eliminated, and the value of the area surrounding the railway can be upgraded.

The invention discloses an image homologous identification platform based on fine registration and an implementation method thereof. The image homologous identification platform based on fine registration comprises: a to-be-detected image receiving module, a digital image fine matching module, a deep learning training system module, a deep learning-based image homologous identification module andan online identification module, wherein the digital image fine matching module is connected with a first end of the image homology identification module based on deep learning; the deep learning training system module is connected with a second end of the image homology identification module based on deep learning; and the online identification module is connected with a third end of the image homology identification module based on deep learning. The image homologous identification platform based on fine registration can perform fine registration on the to-be-detected image, can automatically correct the size and rotation difference of the image formed under different conditions, can eliminate noise pollution in the image transmission process, and is good in robustness, high in responsespeed and high in system practicability.

The invention discloses a vibration reduction and noise reduction device of a small centrifugal air blower, belongs to the technical field of air blowers and solves the problems of high noise and lowcapability of reducing vibration. The vibration reduction and noise reduction device of the small centrifugal air blower comprises a main body and a centrifugal air blower located in the main body, wherein a sound insulation cotton layer is coated in the main body; a vacuum plate is coated on the sound insulation cotton layer; a fixed plate is also arranged in the main body; two same vibration reduction devices are arranged on the fixed plate; each vibration reduction device comprises a fixed rod, a first cushion block, a spring and a second cushion block; the first cushion blocks are used forsupporting and fixing two first support frames of the air blower; the first support frames are connected with the fixed rods in the vibration reduction devices in a sliding manner; other ends of sliding rods are rotatably connected with sliding blocks through fourth rotating shafts; the sliding blocks are connected with the fixed plate in a sliding manner through sliding rails arranged on the fixed plate. Through the vibration reduction and noise reduction device of the small centrifugal air blower, the noise pollution generated during operation is effectively reduced, and the vibration reduction capability of the air blower is improved.

The invention relates to a three-station automatic grinding device for a liner of an electric cooker. The device comprises a grinding station, a wire-drawing station, a polishing station, a robot, an electric cabinet and a wire-drawing belt. The device is characterized in that fixed plates and a waste material receiving platform are arranged in the grinding station; fixed plates, a motor and a waste material receiving platform are arranged in the wire-drawing station; a driving wheel is arranged on the motor; a fixed plate and a waste material receiving platform are arranged in the polishing station; a base and a clamping fixture are arranged on the robot; the electric cabinet is connected to the robot through a connecting wire, and a control table is arranged on the electric cabinet. By designing the grinding station, the wire-drawing station, the polishing station and the robot provided with the clamping fixture together, a to-be-processed liner of the electric cooker can be clamped by virtue of the clamping fixture of the robot, and grinding, wire-drawing and polishing operations and the like on the liner of the electric cooker are separately performed, so that the processing quality of the liner of the electric cooker is improved.