31results about How to "Reduce loud noise" patented technology

The invention discloses a mining dedusting device having dust-reducing and adsorbing functions. The mining dedusting device comprises a dedusting box. Wheels are arranged at the bottom of the dedusting box, a filtering water tank is arranged at the bottom in the dedusting box, drainage pipes are arranged on two sides of the bottom of the filtering water tank, a secondary filter net is fixed at thetop of the filtering water tank, water incoming pipes are arranged above two sides of the secondary filter net, filtering water incoming joints are fixed on two side walls of the dedusting box, an exhaust pipe is arranged in the filtering water tank, a dust absorbing air pump is fixed on the top face of an air pump base, a water drainage end of the dust absorbing air pump is connected with a primary filter box, a dust absorbing port is arranged at the top end of a dust absorbing pipe, a cleaning door and exhaust holes are arranged on a rear side plate of the dedusting box, multiple water nozzles are arranged on the side wall of the dedusting box, and a water pump is fixed on the top face of a water spraying tank which is fixed on the inner side wall of the dedusting box. A double mode ofsuction filtering and spray dedusting is utilized for dedusting, so that dedusting efficiency is improved greatly, and the primary filter net plays a great role in denoising.

The invention relates to the technical field of textiles, and discloses a water seepage textile roller capable of eliminating static electricity. The water seepage textile roller comprises a textile roller body; a pressing component is movably connected to one side, away from the outer wall, of a pressing spring; a water storage bag is movably connected to one end, away from a pressing block, of apressing bag; the outer side of the water storage bag is movably connected with a water pipe; the outer side of the water pipe is movably connected with a water outlet, the outer side of a water outlet head is movably connected with a quantitative water tank, the outer side of the quantitative water tank is movably connected with a quantitative water outlet pipe, and the outer side of the quantitative water outlet pipe is movably connected with a quantitative nozzle. According to the water seepage textile roller capable of eliminating static electricity, the water is sprayed out of the quantitative nozzle through the quantitative water outlet pipe by means of the quantitative water tank, the quantitative nozzle is an atomizing nozzle, and the water in the quantitative water tank is sprayed in a water mist manner, and then the water mist is sprayed on the fabric through the through holes in the outer wall of a roller main body, the temperature and humidity are reduced, and the production of the static electricity is effectively prevented; and the water seepage textile roller is simple in structure and convenient to use.

The invention relates to a weighing-sorting system. The weighing-sorting system comprises a rotary table, a transmission component, an electromagnet component, a weighing component, a material containing component and a control component, wherein the transmission component is fixedly connected with the rotary table so as to drive the rotary table to do circular movement; the electromagnet component comprises multiple groups of electromagnets which are circumferentially distributed around the transmission component as a center on the lower surface of the rotary table; the weighing component is arranged at the outlet of a material conveying line, below the electromagnets; the distance between the weighing component and each electromagnet meets the requirement of the electromagnet on attraction to iron or steel substances. According to the weighing-sorting system, products (iron sheets) are attracted and sorted by the electromagnets, the function of sorting the products (iron sheets) within any mass interval is achieved, the efficiency and the reliability of sorting are enhanced, the labor cost and the labor intensity of operators are lowered, the whole structure is small, the traditional long production-line way is abandoned and the occupied area is reduced.

The invention relates to the technical field of smart home, and discloses a device capable of achieving silence automatic door closing based on the non-Newtonian fluid principle. A door frame and a shell are included. A fluid pipe is fixedly connected in the door frame and internally movably connected with a magnetic pole. Non-Newtonian fluid is arranged in the fluid pipe. A motor is fixedly connected in the shell. The top of the motor is fixedly connected with a bevel gear. A long rod is fixedly connected in the shell. Under the interaction of a second gear, a supporting rod, a rotation rod,a first contact point, a first spring, an electromagnet, a clamp groove, a second spring, a second contact point, a magnet, a buckle and a pull ring, a stirring rod at the outer portion of the secondgear can jack the end, in the shell, of the rotation rod, the first contact point makes contact with the second contact point under the action of the rotation rod, the electromagnet is powered on, themagnet can be attracted, under magnetic force attraction of the buckle and the clamp groove, a door can be completely closed, and accordingly the effect of automatic door closing can be achieved.

The invention discloses an impedance composite resonance magnetic motorcycle silencer. The impedance composite resonance magnetic motorcycle silencer comprises a mounting pipe, a U-shaped springback mechanism is fixedly connected to the left side of an inner cavity of the mounting pipe, a spiral fluid director is arranged in the middle of one side, close to an oil lubricating mechanism, of an inner cavity of a convection barrel, a rotary resonance mechanism is arranged at a position, located on one side, away from the oil lubricating mechanism, of the spiral fluid director, and a magnetic fanis arranged at the position, located on one side, away from the rotary resonance mechanism, of a magnetic packaging mechanism, of the inner cavity of the convection barrel. According to the impedancecomposite resonance magnetic motorcycle silencer, dredging tail gas is carried out through guiding and flow dividing, backflow of the tail gas is avoided; through thermal expansion spraying, lubricating and cleaning the silencer are carried out to certain extent, purifying the tail gas is carried out; external air suction and air convection are achieved, rotating force is provided, rotating the inner part of the impedance composite resonance magnetic motorcycle silencer is carried out to form non-directional vortexes, silencing and heat dissipation are completed, and the service life and the safety of the impedance composite resonance magnetic motorcycle silencer are ensured.

The invention relates to the technical field of ore smashing equipment, in particular to a powder grinding machine for preparing calcium carbonate powder. The powder grinding machine comprises a mainmachine body. A smashing cavity is formed in the main machine body. The main machine body is provided with a feeding port and a discharging port. A grinding assembly is arranged in the main machine body. The grinding assembly comprises a main shaft, a plurality of grinding rollers and a driving part used for driving the main shaft to rotate. The main shaft is arranged vertically and located at thecenter position of the inner bottom wall of the main machine body. The grinding rollers are installed on the main shaft and distributed at intervals. The position, attached to the grinding rollers, in the main machine body is provided with a grinding face. The main shaft is provided with a scraping cutter attached to the grinding face. According to the powder grinding machine, the scraping cutterscrapes dust on the grinding face, thus grinded powder is not prone to sticking to the grinding face of the powder grinding machine, and then the powder grinding machine has the advantages of not influencing the grinding effect easily and prolonging the grinding time.

The invention provides a control system for a vehicle. The control system for the vehicle comprises an acquiring module, a judging module and a control module. The acquiring module is used for acquiring the rotating speed N of the output end of an engine and the rotating speed N_FTC of the input end of a gearbox in the current sampling period, and acquiring the rotating speed N_old of the output end of the engine and the rotating speed N_FTC_old of the input end of the gearbox in the previous sampling period. The judging module is used for comparing the rotating speed N with the rotating speed N_FTC, and comparing the rotating speed N_old with the rotating speed N_FTC_old. The control module is used for controlling the required torque of the engine to be the preset limited torque when the rotating speed N_old is smaller than or equal to the rotating speed N_FTC_old and the rotating speed N is larger than the rotating speed N_FTC, and controlling the required torque of the engine to gradually rise to the target torque within the first preset time. The control system for the vehicle has the advantages of being capable of effectively lowering the impact noise of a power drive chain of the engine and improving the riding comfort. The invention further provides a control method for the vehicle and the vehicle.

The invention discloses a mine jaw crusher capable of being controlled remotely. The mine jaw crusher comprises a lathe bed, a box body, a spindle and a belt wheel. A balancing base plate is arranged below the lathe bed. A remote control unit is arranged beside the balancing base plate. A master controller is arranged beside the remote control unit. The box body is arranged beside the master controller. The spindle is arranged in the box body. The belt wheel is arranged beside the spindle. A bearing pedestal is arranged beside the belt wheel. A gland is arranged beside the bearing pedestal. A lubrication joint is arranged beside the gland. An end cover is arranged beside the lubrication joint. A protection cover is arranged beside the end cover. A clamp plate is arranged in the box body. The mine jaw crusher has the beneficial effects that the crusher can be remotely controlled by operators; huge noise caused by crushing work is reduced, and personal accidents caused by violent vibration are avoided; and work efficiency is improved, and the safety factor is increased.

The invention discloses a waste plastic bottle recycling device adopting progressive compression of a lickerin roller, and the structure of the device comprises a compressor body, a collecting tank, aresidual liquid recovery pipe, a controller, and a heat dissipation box. The heat dissipation box is installed above the compressor body and is locked with the compressor body. The collecting tank isarranged below the compressor body, and the collecting tank is fastened to the compressor body. The controller is arranged on the front side of the collecting tank and is locked with the controller.According to the waste plastic bottle recycling device adopting progressive compression of lickerin roller, residual liquid may be present in the bottle when the recycled plastic bottle is compressedusing a lickerin roller compression mechanism provided by the device. The problems of difficult compression due to the different pressures inside and outside the bottle, splashing during compression,and loud noise of the device can be avoided. Moreover, the problem that the residual liquid in the bottle falls together with the bottle body during compression to bring some trouble to the next degradation treatment can be avoided. More efficient separation process is provided while the noise of the device is reduced.

The invention relates to the technical field of computer equipment, and particularly relates to a computer hard disk shock absorbing device comprising a rectangular frame and a hard disk installing box located in the rectangular frame. The four sides of the hard disk installing box are fixedly connected with the inner side of the rectangular frame through elastic beams. The hard disk installing box is internally provided with a rectangular cavity for placing the hard disk. According to the device, the hard disk installing box for placing the hard disk and the rectangular frame are connected ina flexible suspension way, and then the rectangular frame and the computer shell are fixedly connected so that flexible suspension connection between the hard disk and the computer shell can be indirectly realized, the damage caused by the hard connection between the hard disk and the computer shell can be avoided, the high noise generated in working of the hard disk can be reduced, the shock absorbing protection function for the hard disk can be realized, and the device is simple in structure and low in cost.

The invention discloses a household garbage crushing treatment device which comprises a crushing box body, wherein a heating plate is in bolted connection with the inner wall of the bottom of the crushing box body; an air blower is in bolted connection with the outer wall of one side of the crushing box body; a throwing port is arranged at the top of the crushing box body; a crusher is in bolted connection with the outer wall of the middle part of the bottom of the crushing box body; a soundproof shade is in threaded connection with the outer wall of one side of the crusher; and a vertically-placed rotating shaft is arranged inside the crushing box body and connected to the crusher through a bearing. Through the arrangement of vibration damping plates at the bottoms of supporting legs, thevibration frequency of the entire household garbage crushing treatment device can be greatly reduced, components can be protected against the looseness caused by excessive vibrations of the householdgarbage crushing treatment device, and the safe effect can be achieved; and through the arrangement of the soundproof shade outside the crusher, the huge noise caused by the running of the householdgarbage crushing treatment device can be greatly reduced, the noise pollution can be prevented, and the environment-friendly effect called by the nation can be achieved.

The invention discloses a centrifugal volute fan of an ultra-thin air conditioner. The centrifugal volute fan of the ultra-thin air conditioner comprises an air conditioner shell, volutes and centrifugal fans. Each volute is composed of an inner volute body, an outer volute body, an air outlet and a fixing chassis, wherein a filling cavity is formed between the inner volute body and the outer volute body; the inner volute body and the outer volute body are installed on the fixing chassis through sunk screws; and the air outlet is formed in the outermost end of the volute. Each centrifugal fan is composed of a drive motor and an impeller, wherein the drive motor is installed in the center of the corresponding fixing chassis through a screw, and the impeller is connected with a rotary shaft on the drive motor in a matched mode. The air conditioner shell is provided with an air inlet. By means of the centrifugal volute fan of the ultra-thin air conditioner, the problem that as an existing centrifugal volute fan of the ultra-thin air conditioner is large in size, an air conditioner body is large and noise is high is solved; and meanwhile, through air channels formed in the fixing chassis, the turbulent ratio of fluid is effectively reduced, and fluid output is better facilitated.

The invention discloses a steel ladder shock absorption and noise reduction structure. The steel ladder shock absorption and noise reduction structure comprises a steel plate step (1), a rubber pad (2), a supporting steel plate (5) and a lateral plate (6). The supporting steel plate (5) is horizontally fixed to the lateral plate (6) and a batten (3) is installed on the supporting steel plate (5). The rubber pad (2) is installed on the batten (3). The steel plate step (1) is installed on the shock absorption and noise reduction rubber pad (1) in a tightly attaching mode and the two ends of the steel plate step (1) are fixed to the lateral plate (6) of a ladder. According to the steel ladder shock absorption and noise reduction structure, through the structural arrangement of the batten and the rubber pad, noisy noise generated when the steel ladder is stepped on can be effectively reduced and the shock absorption and noise reduction effects is achieved for the steel ladder; in addition, a lamp strip is installed in a groove in the bottom of the step of the steel ladder, so that decoration and beautifying effects are achieved and the appearance is better.

The invention discloses a commercial low-noise adsorption type range hood. The commercial low-noise adsorption type range hood comprises a shell, a draught fan and an exhaust pipe, wherein the shell comprises an illumination region, an oil absorption region and a control panel; the oil absorption region is internally provided with a cavity; the illumination region is arranged at the bottom end of the cavity; a noise elimination plate is mounted on the inner wall of the cavity; the cavity is internally provided with a flow distribution column; range hood filter elements are arranged on the two sides of the flow distribution column, respectively; the draught fan is arranged between the range hood filter elements; and the shell is provided with an air outlet connected with the draught fan. The device is reasonable in structural design and convenient to mount and use; a fixed sheet is mounted at an outlet end of an impeller of the range hood and is used for adsorbing and purifying smoke. The commercial low-noise adsorption type range hood is convenient to manufacture; a filter bucket can be directly replaced with a net-shaped garbage can in the market and the cost is low; filter cotton is fixed by a steel wire, and only the steel wire needs to be taken out when the filter cotton is replaced; and meanwhile, a separation plate is arranged so that the degree of polluting noise elimination cotton by smoke is greatly reduced, the replacing efficiency of the noise elimination cotton is reduced, and the noise elimination effect is better than that of noise elimination cotton which is directly laid.

The invention discloses a noise reduction system for a double-drum vibratory roller. The noise reduction system comprises a vehicle-mounted main controller, an acoustic controller, an acoustic unit for outputting sound waves, a feedback front end for collecting the grade and phase of vibration noise, and a man-machine interaction display, the data interaction end of the vehicle-mounted main controller is connected with the man-machine interaction display; the vehicle-mounted main controller is connected with a plurality of frequency sensors for measuring the vibration frequency of the steel wheel of the road roller; the feedback front end is arranged to collect noise in a cab in real time, the vehicle-mounted main controller transmits read real-time steel wheel vibration frequency to the acoustic controller, meanwhile, the noise level and phase collected by the feedback front end are also transmitted to the acoustic controller, and the acoustic controller superposes final processed results and outputs the results to the acoustic unit. And the acoustic unit can emit sound waves for inhibiting noise in the cab, so that the problem that the noise in the cab is too loud due to the beat frequency phenomenon of the conventional double-drum vibratory roller is solved.

The invention relates to the technical field of textiles, and discloses a water seepage textile roller eliminating static electricity based on the principle of action of force. The water seepage textile roller comprises a textile roller body, a roller outer surface layer is arranged on the outer side of the textile roller body, buffer springs are arranged on the outer side of the roller outer surface layer, axis blocks are arranged inside the roller outer surface layer, the outer sides of the axis blocks are movably connected with connecting springs, the ends, away from the axis blocks, of theconnecting springs are movably connected with buffer rods, and surface layer central shafts are arranged inside the roller outer surface layer. According to the water seepage textile roller eliminating the static electricity based on the principle of action of force, the connecting springs and the buffer rods are arranged inside the roller outer surface layer, and the buffer rods are flexible rodbodies and are connected with the connecting springs together, so that when the roller outer surface layer is severely pressed to generate friction, the buffer rods are bent through the connecting springs to buffer the space between the roller outer surface layer and the textiles, and large noise generated by violent rotational friction is reduced.

The invention discloses a pulse negative pressure drilling vibrating screen, belonging to the technical field of petroleum drilling solid phase control, which comprises: a base, a screening device, a negative pressure device, a pulse distributor and a liquid discharge device; the screening device includes a The first sieve, the second sieve, and the third sieve are arranged in sequence in the direction to the entrance, and the bottoms of the first sieve and the second sieve are respectively communicated with the first vacuum plate and the second vacuum plate; the negative pressure device is set On the base, the pulse dispenser communicates with the negative pressure device, the first vacuum plate and the second vacuum plate respectively. When working, the pulse dispenser forms a pulsed negative pressure on the first vacuum plate and the second vacuum plate; the liquid discharge device communicate with the first vacuum disk and the second vacuum disk respectively. The invention uses the pulse dispenser to alternately generate negative pressure inside the first vacuum plate and the second vacuum plate, reduces the screening of critical particles, improves the recovery efficiency of drilling fluid, and at the same time fully exerts the working capacity of the negative pressure device to realize High peak negative pressure under the screen.

The invention relates to the technical field of textiles, and discloses a water-permeable textile roller that eliminates static electricity based on the principle of force. Spring, the outer layer of the roller is provided with an axis block, the outer side of the axis block is movably connected with a connecting spring, and the end of the connecting spring far away from the axis block is movably connected with a buffer rod, and the inside of the outer layer of the roller is provided with a surface center shaft . The water-permeable textile roller based on the principle of force to eliminate static electricity is provided with a connecting spring and a buffer rod inside the outer layer of the roller. The buffer rod is a flexible rod body connected together by a connecting spring, and the outer layer of the roller is under severe pressure. During friction, the buffer rod is bent through the connecting spring to buffer between the outer layer of the roller and the textile, reducing the loud noise caused by violent rotational friction.

The invention discloses an electric massage chair skin sewing thread cylinder packaging machine. The electric massage chair skin sewing thread cylinder packaging machine comprises a packaging machinebase, a second motor and a grinding cylinder, wherein a first motor is arranged at the lower end of the packaging machine base, moreover, a silencer is arranged at the bottom end of the first motor, one side of the first motor is provided with a first transmission belt, moreover, a paper cylinder is arranged above the first transmission belt, a grinding cylinder power rod is arranged below the grinding cylinder, and a maintenance door is arranged on one side of the grinding cylinder power rod. According to the electric massage chair skin sewing thread cylinder packaging machine, the grinding cylinder, the silencer and a maintenance tool storage box are arranged so that huge noise generated by the motor during operation can be eliminated under the situations that the thread cylinder is packaged, dust removal and ash removal are carried out on a sewing thread, and the occurrence of knot tying in the packaging process is avoided, meanwhile maintenance tools can be timely provided when themachine breaks down, the maintenance time is shortened, the working efficiency is improved, different working conditions can be adapted, and a better application prospect is brought.

The invention discloses a self-balancing fan device. The self-balancing fan device is characterized by comprising a frame, a base, a connecting assembly and a fan. The machine frame comprises three to eight groups of stand column assemblies, every group of stand column assembly comprises a stand column which is vertically arranged along the axis of the group of stand column assembly, and the groups of the stand column assemblies are distributed in the axis of the rotation axis of an impeller in a regular polygonal shape. The base comprises square tubes which are identical to the stand column assemblies in number, the square tubes are fixedly welded end to end to form a polygonal mounting rack corresponding to the regular polygon of the stand column assemblies; connecting assemblies are identical to the stand column assemblies in number. The base is suspended on the frame through the connecting assemblies and detachably, elastic-adjustably and fixedly connected with the frame. The fan comprises a housing, the impeller, a motor and a transmission assembly and is fixedly arranged on the base through the housing, and the housing is provided with an air inlet and an air outlet.

The invention discloses a steel ladder shock absorption and noise reduction structure. The steel ladder shock absorption and noise reduction structure comprises a steel plate step (1), a rubber pad (2), a supporting steel plate (5) and a lateral plate (6). The supporting steel plate (5) is horizontally fixed to the lateral plate (6) and a batten (3) is installed on the supporting steel plate (5). The rubber pad (2) is installed on the batten (3). The steel plate step (1) is installed on the shock absorption and noise reduction rubber pad (1) in a tightly attaching mode and the two ends of the steel plate step (1) are fixed to the lateral plate (6) of a ladder. According to the steel ladder shock absorption and noise reduction structure, through the structural arrangement of the batten and the rubber pad, noisy noise generated when the steel ladder is stepped on can be effectively reduced and the shock absorption and noise reduction effects is achieved for the steel ladder; in addition, a lamp strip is installed in a groove in the bottom of the step of the steel ladder, so that decoration and beautifying effects are achieved and the appearance is better.

The invention discloses an LF electrode adjustment energy-saving control method based on sonar feedback. The method comprises the following steps: step 1, statistical analysis; step 2, data acquisition; step 3, signal processing; step 4, series pole control; step 5, electrode adjustment; step 6, calibrating compensation; step 7, programming; step 8, test optimization; step 9, packaging and releasing; according to the invention, sonar feedback is introduced on the basis of a traditional electrode regulator, automatic acquisition and processing of sonar signals are realized, a constant current type LF electrode regulator is modified, a current set value is dynamically set according to the sonar feedback, a current set point is reduced under the conditions of open arc combustion and embedded combustion, and power consumption is remarkably reduced. The production cost is reduced, huge noise generated in the electrode temperature rising process is reduced, meanwhile, the automation degree is improved, full-automatic control over temperature rising and slagging is achieved at present, manual intervention is not needed, and the misoperation situation is reduced.

The invention discloses a tunnel concrete pouring device and a using method. The tunnel concrete pouring device comprises an upper end pouring device, a side wall pouring device, a bottom end pouring device, a base pushing device and a noise reduction supporting device. The invention belongs to the technical field of tunnel concrete pouring devices, and particularly relates to the tunnel concrete pouring device and the using method. The Leidenfrost effect is creatively applied to the tunnel concrete pouring device, friction force generated by direct contact between concrete and a pouring mold is reduced, the Huygens principle is creatively applied to the tunnel concrete pouring device, and huge noise generated during transportation of a transport vehicle is reduced; the humidity of a cement wall is monitored through a temperature and humidity sensor, and the situation that the cement wall collapses due to the fact that the cement wall is not solidified is avoided; and the surface effect principle is creatively applied to the tunnel concrete pouring device, a base is properly lifted to weaken the pressure of the pouring device on a guide rail, and the problems that an existing tunnel concrete pouring device on the current market is low in efficiency, complex in structure and inconvenient to maintain are effectively solved.

The invention discloses a wire drum packing machine convenient for maintenance. The wire drum packing machine convenient for the maintenance comprises a packing machine base, a second motor and a polishing drum. The lower end of the packing machine base is provided with a first motor, and the bottom end of the first motor is provided with a silencer. One side of the first motor is provided with afirst driving belt, and a wire drum is installed above the first driving belt. A polishing drum power rod is installed below the wire drum, and one side of the polishing drum power rod is provided with a detection door. One side of the detection door is provided with a wire drum clamping arm. The wire drum packing machine convenient for the maintenance is provided with the polishing drum, the silencer and the detection door, and is capable of packing the wire drum and dedusting a sewing thread, preventing the knotted situation in a packing process, and eliminating the huge noise generated while the motor is operated. In addition, the internal conditions of the machine can be rapidly known while the machine is broken down, the wire drum packing machine convenient for the maintenance is suitable for the different working conditions, and the better using prospect is brought.

The invention relates to a full-automatic hydraulic stone splitting device, and belongs to the technical field of hydraulic devices, and provides a full-automatic hydraulic stone splitting device. The fully-automatic hydraulic stone splitting device has the advantages that the structure is simple, and the convenience in use is realized; by adopting the electrical-mechanical-hydraulic integral design, the time is shortened, the labor intensity is decreased, and the working efficiency is high. The full-automatic hydraulic stone splitting device adopts the technical scheme that the full-automatic hydraulic stone splitting device consists of a stone splitting expander and a stone splitting hydraulic cylinder, wherein a drilling part mainly consists of a hydraulic motor, an impact drill bit and a drilling hydraulic cylinder; the impact drill bit is arranged on the hydraulic motor, and the drilling hydraulic cylinder is used for driving the impact drill bit to move up and down; the stone splitting hydraulic cylinder and the drilling hydraulic cylinder are connected with a main oil pipeline through low-pressure relief valves; the stone splitting expander and the hydraulic motor are connected with the main oil pipeline through high-pressure relief valves; a main overflow valve is arranged on the main oil pipeline, and throttling valves are respectively arranged on oil inlet pipes of the stone splitting hydraulic cylinder, the drilling hydraulic cylinder, a stone splitting arm and the hydraulic motor; electromagnetic reversing valves are respectively arranged on oil inlet and outlet pipelines. The full-automatic hydraulic stone splitting device is widely applied to stone splitting.