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

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 discloses a fixing base of a blower. The fixing base comprises a bottom plate, a fixing cover, electric telescopic rods and universal wheels, wherein a storage battery is installed in the bottom plate; a first sliding groove is formed in the position, at one side of the storage battery, in the bottom plate; a first sliding block is installed in the first sliding groove; and support disks are arranged at the four corners of the bottom of the bottom plate. According to the fixing base, a mounting base is mounted at one side of the top of a shock absorbing plate through four supportrods; support plates are mounted at two sides of the bottom of the mounting base; two screw rods are uniformly installed between the two support plates; a third sliding block is installed on each screw rod; a second sliding groove is formed in the mounting base above each screw rod; a second sliding block is installed in each second sliding groove; a first L-shaped plate is installed at one sideof the top of the mounting base; a second L-shaped plate is installed at one side of each second sliding block; and one end of each second L-shaped plate extends to be connected with the top of the corresponding third sliding block. Therefore, the blower is convenient to install and remove, and use is convenient.

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 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 structure of a transverse beating stick of a buffer type press. Square holes are symmetrically arranged at two ends of a beating stick body; elastic rubber blocks with proper size are filled in the square holes; and buffer blocks are arranged in the square holes at the upper parts of the elastic rubber blocks and are fixed in the square holes by screws through buffer block fixing flanges.

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.

A method for solving the noise of steam and water mixing valve and steam explosion. The invention is applied to a low-temperature heating kettle system. The low-temperature heating kettle system includes a heating kettle and a temperature-adjusting water-vapor mixing valve. The mixing valve is referred to as a mixing valve. The heating kettle is provided with an interlayer. The temperature-adjusting water-steam mixing valve is provided with a cold water inlet and a steam inlet. The temperature-adjusting water-steam mixing valve and the heating kettle are connected by pipelines. The cold water inlet is connected with a cold water pipe and a steam inlet. A steam pipe is connected, and valves are provided on the cold water pipe and the steam pipe; the temperature-adjusting water-steam mixing valve is controlled and connected with a control system; the invention completely solves the problem that the steam directly enters the interlayer of the low-temperature heating kettle through the mixing valve, and also completely solves the system Strong vibration and loud noise caused by operation.

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 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 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 mounting frame. The mounting frame is structurally characterized by comprising a main frame body, a hanging frame and connecting components, the main frame body comprises 3-8 sets of upright components, each upright component comprises an upright and a connecting frame, the hanging frame is a frame formed by mutually welding square pipes, H-section steel or channel steel and with a shape corresponding to a regular polygon or a rectangle formed by sequentially connecting projection of each upright, the number of the connecting components is identical with that of the upright components, each connecting component comprises a bolt, a spherical washer, a spherical washer supporting block, a lower compression spring, a first spring seat, a second spring seat, an upper compression spring and a fixing nut, and the hanging frame is arranged on the main frame body in a hung manner through the connecting components and is in demountable, elastically-adjustable and fixed connection with the main frame body.

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.

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.