72results about How to "Noiseless operation" patented technology

Disclosed is a driving device for passage gates or thoroughfare gates and door or gate drives. Said driving device comprises a brushless DC servo motor to which a servo regulator is assigned. The output shaft of said DC servo motor is directly connected to the drive shaft of the locking element. The DC servo motor can be accurately regulated to a great extent regarding rotational speed, torque, etc. and can be adapted to different requirements via the servo regulator such that the same motor can be used for many different applications along with said servo regulator, i.e. a continuous drive system is created. Coupling gears and reduction gears, i.e. parts that are prone to malfunction and wear, can be dispensed with due to the fact that the locking element is directly driven, thus requiring less maintenance work at greater intervals.

The invention discloses a pond ecological-energy bait casting device. According to the pond ecological-energy bait casting device, the physiological behavior of fish ingestion is used as feeding power, a bait box is fixed on a connecting frame, a baiting tray is arranged below an outlet of the bait box, the baiting tray is hung on a hook through a hanging rod, a plurality of cross line holders which are vertically symmetrical are fixed on the lower portion of the hanging rod, and a large amount of bait is placed on lines of the cross line holders (6). When a fish finds food, the baiting tray of the bait box can be swung by the fish and then bait particles are discharged along the discharge outlet.

The invention discloses a control method of a fluorine-pump primary loop server cabinet heat radiation system. The fluorine-pump primary loop server cabinet heat radiation system comprises a machine room unit and a refrigerant fluorine supplying and returning unit, wherein the refrigerant fluorine supplying and returning unit comprises a circulating power unit and a cooling unit; and the machine room unit, the circulating power unit and the cooling unit are connected in sequence to form closed circulation. The control method of the fluorine-pump primary loop server cabinet heat radiation system achieves short-distance accurate transport of cool air of a cabinet, and solves problems of local overheat and existence of hot spots of the server cabinet; meanwhile, a natural cooling measure is adopted so that heat exchange temperature difference is huge and efficiency is high; and active condensation prevention is adopted, so that the system has the advantages of high reliability, low power consumption and low noise, and satisfies an energy saving and environment protecting concept.

The invention discloses a heat-pipe internal-circulation secondary refrigerant loop server cabinet heat radiation system which comprises a machine room unit and a refrigerant fluorine supplying and returning unit, the refrigerant fluorine supplying and returning unit comprises a circulating power unit and a cooling unit, and the circulating power unit forms closed circulation with the machine room unit through a first refrigerant loop and forms closed circulation with the cooling unit through a second refrigerant loop. The system realizes short-distance accurate transportation of cool air of a cabinet and solves problems of local overheat and existence of hot spots of the server cabinet ; and, at the same time, a natural cooling measure is used so that a heat exchange temperature difference is huge and efficiency is high, and active anti-condensation is adopted so that the system has the advantages of high reliability, low power consumption and low noise and satisfies an energy saving and environment protecting concept.

The invention relates to a novel four-link hinge assembly, which is used for connecting a car body with a car door. The hinge assembly comprises a connecting plate, a four-link hinge movable plate, a first lining rod, a second lining rod, a hinge fixed plate and a fixed plate baffle. The connecting plate is welded on the side wall stand column of the car body. The four-link hinge movable plate is connected with the connecting plate. One ends of the first lining rod and the second lining rod are movably connected with the four-link hinge movable plate. The other ends of the first lining rod and the second lining rod are movably connected with the hinge fixed plate. The hinge fixed plate is connected with the fixed plate baffle. The hinge fixed plate is fixedly connected with the car door through bolts. Compared with the prior art, the novel four-link hinge assembly has the advantages of simple structure, large opening angle, high firmness and durability, no impact, small friction, long service life and the like.

The invention discloses a floating plate device for a wave-collecting generating system, which includes a bracket and floating plates for collecting wave energy, wherein the floating plates includes a first floating plate and a second floating plate that are arranged in parallel; the first floating plate includes a first accommodating cavity facing to a wave guide surface; and the second floating plate includes a second accommodating cavity facing to the wave guide surface. The floating plate device is applied to the wave-collecting generating system, operates without noise, produces no waste gas, waste material, sewage and radiation, and therefore is the environment-friendly generating technology; and when typhoon approaches, the floating plates can rise up to be fastened to the shore or cliff, so as to avoid being damaged by billows.

The invention relates to a pressure-bearing wall hanging solar energy collector without a water tank. The solar energy collector is characterized in that the bottommost collector tube of the solar energy vacuum glass collector tube arranged transversely is connected to a cold water inlet pipe, and the upmost solar energy vacuum glass collector tube is connected to a high temperature hot water outlet pipe. Each solar energy vacuum glass collector tube is equipped with a long hollow metal water inlet pipe. Tap water flows into the solar energy vacuum glass collector tube through the cold water inlet pipe, then the warm water after heated by solar energy flows into the second solar energy vacuum glass collector tube, and the water heated by solar energy vacuum glass collector tubes one by one is output by the hot water outlet pipe. The solar energy collector provided by the invention has no water tank, has small volume, so that the collector can be installed on the balcony or outer wall transversely or longitudinally at each layer and each unit of a multilayer building without any noise. Meanwhile, the present solar energy collector has functions of heat collecting solar energy, thermal insulation and water storage, can bear water pressure from tap water. Hot water can be output very fast, no cold water is wasted, and cold water can be supplied automatically. The collector has no problems of idle sunning, frozen tube and tube explosion, because the glass vacuum glass collector tubes are always filled with water.

The invention discloses a water-cooled rotary grate straw bale-fired semi-gasified direct-fired atmospheric pressure hot-water boiler. The hot-water boiler comprises a straw baling drying chamber, a vertical cylindrical boiler shell, a boiler inner liner and a water-cooled rotary grate, wherein the straw baling drying chamber communicates with the bottom of the boiler inner liner; the vertical cylindrical boiler shell is arranged on the outer side of the boiler inner liner, and an interlayer between the vertical cylindrical boiler shell and the boiler inner liner is a boiler water layer; and the water-cooled rotary grate is arranged at the bottom of the vertical cylindrical boiler shell. The water-cooled rotary grate straw bale-fired semi-gasified direct-fired atmospheric pressure hot-water boiler solves the problem of the straw bale-fired direct-fired, so that the intermediate processing and forming links are omitted without processing bale straws into granules or compacts, and the operation cost is reduced; the bale straws are easy to loose, so that the bale straws can fully burn in the boiler; and the boiler has high thermal efficiency and can prevent the straws from coking andNOx from generating, so that the effects of energy saving and environmental protection are achieved.

The invention discloses an X-Y workbench with two degrees of freedom, and the workbench comprises a fixed structure, a first sliding structure, a second sliding structure, an ultrasonic motor with more than one degree of freedom, an ultrasonic motor control device with more than one degree of freedom, a bottom plate and a pressurizing device; the first sliding structure is arranged on the fixed structure, and the second sliding structure is arranged on the first sliding structure; one end of the ultrasonic motor with more than one degree of freedom is connected with the second sliding structure, and the other end of the ultrasonic motor with more than one degree of freedom is contacted with the bottom plate, and the ultrasonic motor with more than one degree of freedom maintains a certain pressure to the bottom plate through the pressurizing device; a workbench connecting plate is fixedly arranged on the second sliding structure; the ultrasonic motor control device with more than one degree of freedom controls the ultrasonic motor with more than one degree of freedom by signal excitation; and the ultrasonic motor with more than one degree of freedom controls the sliding of the workbench connecting plate in the X-Y direction by vibration. According to the X-Y workbench with two degrees of freedom, the precise positioning and the use of a single ultrasonic motor on the workbench with two degrees of freedom are realized.

The double furnace body and rotary furnace grate briquette coal boiler features that it has outer water layer and inner water layer, rotary furnace grate, outer combustor on the rotary furnace grate, lower water layer, annular fire collecting flue, combustor, upper water layer, two circular flues connected to smoke exhaust, inner water layer, central combustor grate inside the inner water layer, central combustor, ring water layer, middle fire collecting flue, elliptic water heater, upper water heater, and smoke exhausting flue. The boiler can supply heat, bath water, boiled drinking water and bath steam, and has the afterheat in smoke utilized to raise the heat efficiency.

The invention provides a testing device of a weighing sensor. The testing device comprises a device bench, a loading and unloading device, a suspender device, and a lifting device. The loading and unloading device fixed on the top board of the device bench is used for fixing a weighing sensor. A closed frame is formed at the upper end of the suspender device and a weight placing plate is arrangedat the lower end of the suspender device; and one end of the weighing sensor is arranged in the closed frame and the other end of the weighing sensor is fixed in the loading and unloading device. Thelifting device is connected with the suspender device detachably. During the testing time, the lifting device enables the suspender device to descend and thus the top of the closed frame is in contactwith the weighing sensor; and then the weighing sensor carries the suspender device independently. Therefore, a problem of the testing efficiency of the weighing sensor is solved. The manpower is reduced, the machine size is reduced, the manufacturing cost is lowered, and no noise is caused in operation. The weighing sensor uses the loading and unloading device to realize quick loading and unloading; either a male worker or a female worker can carry out operation; the testing device is easy to operate; and the testing efficiency is improved substantially.

A reciprocating liquid pump (1) for the delivery of liquid fuel to domestic burner installations comprises an electromechanical drive acting on a plunger (5) so that the pump chamber (7) of the pump cylinder (6) ) inside the reciprocating plunger. Liquid fuel is delivered from the pump during the active stroke of the plunger. The active stroke is terminated by a pressure relief device (15, 16, 23) which relieves the pump chamber (7) when the plunger is a certain distance (d) from the maximum stroke end stop position.

An air compressor includes a chassis that supports thereon a motor, a transmission set, and a plurality of extendible barrels. The transmission set includes a clutch that is operatively coupled to the motor through a belt. Two eccentric rotation members are respectively arranged on opposite sides of and coupled to the clutch. Each eccentric rotation member is coupled to a crank arm, which has a moving end connected to the extendible barrel. The extendible barrel is provided with an air inlet port and an air outlet port. When the motor is set in operation, the transmission set drives the extendible barrels to move carry out reciprocal and axial compression to delivery compressed air. The present invention features easy maintenance and can carry out a noise-free operation.

The invention discloses a novel lifting device of a vertically-lifted type stereo garage. The novel lifting device comprises a garage frame, a lifting driving speed reducing motor is arranged above the frame, the garage lifting driving speed reducing motor is connected with a driving roller for driving lifting steel cord belts through two universal couplers, one end of each lifting steel cord belt is wound around the driving roller to be connected with a lifting basket for lifting a vehicle, the other end of each lifting steel cord belt is wound around an auxiliary roller and then wound around a roller for driving and lifting a balance weight to be connected with the balance weight, and locking heads at the two ends of each lifting steel cord belt are each formed by two bent steel plates, a wedge-shaped steel plate with the width equal to the width of the belt and eight locking bolts, wherein the wedge-shaped steel plates are clamped between the steel cord belts. According to the novel lifting device, guide wheels and guide rails are arranged on the lifting baskets and the balance weights respectively; in order to prevent the steel cord belts from sliding on the rollers, an external linear encoding ruler serves as a position detection unit, and a full-closed loop is adopted for a control part. The lifting steel cord belts of the novel lifting device have the advantages of being simple in structure, free of maintenance, free of noise during running, long in service life and the like.

The present invention discloses a rotation arm type wire laying-off apparatus. According to the rotation arm type wire laying-off apparatus, a number 1 bearing (2) is arranged on the front portion of a rotation shaft (5), the middle portion of the rotation shaft (5) is provided with a number 2 bearing (8), the tail portion of the rotation shaft (5) is provided with a number 3 bearing (9), the front portion of the rotation shaft (5) is arranged on a front bracket (4) through the number 1 bearing (2) and a swing bearing base (3), the rotation shaft (5) penetrates through a wire supporting arm (11), and is arranged inside the wire supporting arm (11) through the number 2 bearing (8) and the number 3 bearing (9), the wire supporting arm (11) is arranged on a tail bracket (10) in a support manner, the front bracket (4) is provided with a number 1 conducting wire roller (1), and a number 2 conducting wire roller (6) and a number 3 conducting wire roller (7) are sequentially arranged on the rotation shaft (5), such that the integration forms the wire laying-off apparatus. The rotation arm type wire laying-off apparatus has characteristics of simple structure, convenient operation, rotary wire laying-off, uninterruptedly-supplied dish winding, no noise during running, surface damage avoidance, clean work environment, improved working efficiency, and ensured product quality.

The invention relates to a swing cylinder suspension heating direct-line generator. A swing cylinder heat energy converter is a novel heat engine. A hot end liquid level suspension plate heating structure without a partition in a pipe is adopted, a working medium is low boiling point liquid, and the heat energy conversion rate is higher than other heat engines. Natural gas, shale gas, mine gas andgarbage biogas can be used for generating electricity, and solar thermal power and geothermal energy and industrial waste heat can be used for generating the electricity. A suspension heat conductionplate with a guide mechanism in the converter floats on the hot end liquid level, moves up and down with the liquid level and heats the liquid level, the small temperature difference between two endscan generate a large saturation vapor pressure difference, liquid is pressed to the cold end, the hot end liquid level drops, the cold end liquid level rises, the center of gravity moves to the coldend and over a supporting axis, the heat energy converter swings, and a cold end connecting rod transmission mechanism drives a promoter up and down in a linear power generation device to generate theelectricity.