197 results about "Mechanics" patented technology

The invention discloses a sensor for monitoring metal abrasive particles in oil liquid on line. The sensor is a mutual inductance sensor and comprises an exciting coil and an inducting coil, wherein an oil path through which the oil liquid can pass is arranged in the center of a framework made of a magnetic inert material; the exciting coil and the inducting coil are coaxially wound on the framework; the inducing coil is positioned between the exciting coil and the framework; the axial length of the inducting coil is 1/4-1/2 of that of the exciting coil; and the axial center points of the inducting coil and the exciting coil are superposed. The sensor realizes zero compensation and adjustment by adopting a parallel measurement structure and is simple in structure, high in sensitivity, high in linearity and high in interference resistance. The sensor applied to on-line monitoring for the metal abrasive particles in the oil liquid is convenient to operate, high in instantaneity, high in measurement precision and accurate and reliable in monitored result and can be widely applied to military and civil fields and used for monitoring the pollution degree and the abrasion to the oil liquid of lubricating systems of mechanical equipment such as various air planes, naval vessels and automobiles and monitoring and diagnosing faults of the lubricating systems of the mechanical equipment to avoid safety accidents.

The invention relates to a concrete sample curing room which consists of a laboratory as well as a microcomputer, a temperature sensor, a humidity sensor, a constant temperature and humidity box and an air flue that are arranged in the laboratory, wherein the microcomputer is respectively connected with the temperature sensor, the humidity sensor and the constant temperature and humidity box which is internally provided with a hermetically sealed compressor, an electric heating pipe, an ultrasonic humidifier, a centrifugal fan and an evaporator; an air outlet of the constant temperature and humidity box is connected with the air flue; the temperature sensor monitors the temperature in the constant temperature and humidity box and transmits a temperature signal to the microcomputer; the humidity sensor monitors the humidity in the constant temperature and humidity box and transmits a humidity signal to the microcomputer; the microcomputer controls the ultrasonic high-frequency oscillation, converts the water fog into ultramicrons with the particle size of 1-5 microns, diffuses the water fog into the air through a pneumatic device, and guarantees the even indoor temperature and humidity through setting pipeline fog sending and blowing manners; the air transmitted by the centrifugal fan blows the fog of the ultrasonic humidifier to everywhere of the constant temperature and humidity box through the air flue.

The invention discloses an e-cigarette leak-proof device, comprising a shell, a gas flow passage allowing a gas flow and/or smoke to pass through, and a porous structure that sucks nicotine liquid through capillary suction to prevent leakage of the nicotine liquid; the gas flow passage is formed in the shell, and the porous structure comprises a porous plate arranged in the gas flow passage. The nicotine liquid in the gas flow passage is sucked through the porous structure arranged in the gas flow passage according to the capillary principle of pores, and leakage of the E-cigarette nicotine liquid is avoided effectively at the premise of ensuring air circulation.

The invention discloses a coal seam anti-reflection method for circular damage by using cold shock of liquid nitrogen and phase change gas. First, a layer penetrating drill hole is drilled in a roadway to a coal seam through a rock layer; in the layer penetrating drill hole, the coal seam is cut to form multiple cracks perpendicular to the layer penetrating drill hole; a liquid nitrogen injectingpipe and an exhaust pipe extend into the layer penetrating drill hole; and the exhaust pipe is connected with two gas pipelines separately provided with a safety valve and a spherical valve. The spherical valve performs the on-off control over the emission of nitrogen when the liquid nitrogen is injected in the layer penetrating drill hole; after the spherical valve is closed, a threshold of the safety valve is set, so that the safety valve controls the pressure in the layer penetrating drill hole; and after the air pressure in the layer penetrating drill hole exceeds the threshold each time,the safety valve is opened to discharge internal nitrogen for pressure relief, and the safety valve is automatically closed after the pressure relief. The method can guarantee that the liquid nitrogenis quickly and continuously injected in the layer penetrating drill hole, and meanwhile, cracks of coal masses are caused by using cold shock of the liquid nitrogen, the expansion pressure of the phase change gas and the frost heaving pressure of water in the cracks to effectively guarantee the anti-reflection effect.

The invention discloses a double-head thyroid drag hook which comprises a handle, a connecting rod and drag hook heads. One end of the connecting rod is connected with the handle, the other end of the connecting rod is connected with the drag hook heads, the drag hook heads comprise the first drag hook head and the second drag hook head, the first drag hook head and the connecting rod are integrally formed, the second drag hook head is fixed to the connecting rod through a rotating shaft, and the first drag hook head, the second drag hook head and the connecting rod form a Y shape. The second drag hook head is fixed to the connecting rod through the rotating shaft, the first drag hook head, the second drag hook head and the connecting rod form the Y shape, when the thyroid area of a focus position is large, the drag hook can be separated from tissues conveniently, clamping is firm, and sliding down cannot occur.

Disclosed is a machine tool cutting force simulation loading device so as to mainly solve the problems that prior machine tool cutting force simulation loading devices are complicated in structure, small in load and not suitable for experimenting on large high-speed numerically-controlled machine tools. The device is characterized in that the outside of a loading mandrel (4) is connected with a radial bearing sleeve (15) through rolling bearings B (18), a rotary element (16) is arranged on the outside of the radial bearing sleeve (15), a radial hydraulic cylinder (11) is arranged in a groove of the rotary element (16), a piston rod of the radial hydraulic cylinder (11) abuts against the outer surface of the radial bearing sleeve (15), and the rotary element (16) is connected with a servo motor (6) through a belt (8). An axial bearing sleeve (12) is arranged at the right end of the loading mandrel (4), and an axial hydraulic cylinder (13) is arranged in the axial bearing sleeve (12). The device has the advantages of being simple in structure, large in load range and applicable to machine tools of various types.

The invention relates to a central grading lean oil premixed low-pollution combustion chamber. A duty stage is located in the center and consists of a film-forming air atomizing nozzle and a two-stagecyclone, the two-stage cyclone forms a reasonable central backflow area at the downstream, in addition, an oil film improves the atomizing effect under the shearing action of the two-stage cyclone, the flame stability characteristic under a small working condition is effectively improved, and the working boundary of the duty stage is widened. A main combustion stage is composed of a plurality ofdirect injection nozzles with annular air and a main combustion stage cyclone, the annular air effectively controls jet flows to have a reasonable penetration depth within a full working condition range, swirling air and the multiple jet flows are premixed in a main combustion stage straight channel and a convergent channel in advance, the formed uniform combustible mixed gas is premixed and combusted in the combustion chamber, the pollution emission of the combustion chamber under a large working condition can be remarkably reduced, and the problem of spontaneous combustion can be effectivelyavoided. Therefore, the problems of flame stability under the small working condition and pollution emission under the large working condition can be effectively solved.

The invention discloses a method for evaluating temperature uniformity in the width direction of a hot-rolled strip steel intermediate billet. The method for evaluating the temperature uniformity in the width direction of the hot-rolled strip steel intermediate billet comprises the following steps that the temperature of the intermediate billet is measured in the hot rolling process by using a thermal imager, and a shot thermal imaging graph is led into a computer; and image data are processed by using thermal imaging analysis software; a cross grid is filled in the thermal imaging graph by using Photoshop software, the graph is divided into a plurality of grids, and the edge temperature drop value of the intermediate billet and the width value of an edge temperature drop area are mainly analyzed through the grids. According to the method, edge temperature drop data in the width direction of a strip steel and area width data in which the temperature drop occurs can be accurately and objectively reflected, so that the problem of temperature uniformity evaluation in the width direction in the conventional steel billet heating process and the problem that the temperature distributionin the width direction of the intermediate billet in the rolling process is not explained are solved.

A lock for computer security has housing comprising a bottom wall, at least one side wall and a front wall with a corner region defined adjacent to both the bottom wall and the at least one side wall. A locking assembly comprises a locking assembly body holding at least two locking elements including a main locking element and a movable locking element, both said locking elements being supported by the locking assembly body, and the main locking element extending from and away from the locking assembly body at the front wall of the lock housing. A driver is coupled to the movable locking element, configured to selectively move the movable locking element in frontwise and rearwise directions, and controlled by a locking mechanism. The locking assembly is secured to the housing at the corner region thereof, with the locking elements located directly adjacent both the bottom wall and the at least one side wall.

A home appliance with a cooktop and an oven cavity. A gas-operable burner for heating the cavity to a cooking temperature and including a gas mixing pipe is mounted to the appliance with a bracket and has an inlet for intake of gas and air for combustion, the gas mixing pipe being mounted to the appliance with a bracket. A ventilation channel extends through the appliance body. A fan is in fluid communication with the ventilation channel for creating an airstream within the ventilation channel. An air conduit extends between the ventilation channel and the gas mixing pipe, with an air conduit inlet in the airstream and an air conduit outlet adjacent the gas mixing pipe to direct air from the airstream to the gas mixing pipe for combustion with the gas and air. An air conduit stabilization apparatus mounts the air conduit to the gas mixing pipe bracket.

An ammonia low-nitrogen multi-stage rotational-flow burner comprises an outer air cylinder and an inner air cylinder, a direct-flow air channel is formed between the inner wall of the outer air cylinder and the outer wall of the inner air cylinder, a plurality of main gas pipelines are evenly distributed on the outer wall of the inner air cylinder in the circumferential direction, the inner air cylinder is provided with a rotational-flow air channel, a rotational-flow air channel, a central air channel and a central gas injection channel which are coaxial from outside to inside, and fuel gas is divided into three parts through the central gas injection channel, the rotational-flow air channel and the main gas pipelines. The central air channel, the direct-flow air channel and the rotational-flow air channel divide air into three parts, classification of fuel and air is carried out in the inner air cylinder, in addition, the burner can further comprise a flame segmentation ring arranged at the front end, flame can be segmented, the contact area of gas and air is increased, combustion is more sufficient, the fuel and the air are mixed in a layered mode, and accordingly the gas and air mixing effect can be enhanced. Heat radiation transmission between a component and the surrounding high-temperature environment is slowed down, and the service life of the component is prolonged.

The invention discloses an oil-immersed transformer capable of cleaning impurities, and the transformer comprises a mounting frame, an oil discharging mechanism and a cooling box; a motor is fixed tothe outer side of the mounting frame, a rotating shaft is rotatably connected to the interior of the mounting frame, an oil pump is fixed to the right side of a transformer body, and a baffle is fixedto the outer side of an oil discharging pipe; and an oil discharging opening is formed in the outer side of the connecting pipe, the cooling box is fixed to the left side of the fixed plate, and thecooling box is fixed to the right side of the fixed plate. The oil-immersed transformer capable of cleaning impurities is provided with the first filter plate, the filter screen and the waste port, transformer oil in the transformer body is pumped through the oil pump and conveyed into the oil storage tank in cooperation with the oil conveying pipe, the transformer oil is filtered in cooperation with the filter screen, and the impurities in the transformer oil are repeatedly and conveniently filtered; impurities can automatically slide to a waste port to be discharged by matching with the inclined filter screen, the structure is simple, and the service lives of electrical elements in the transformer main body and transformer oil are prolonged.

The invention belongs to the technical field of lithium ions, and particularly relates to a method for calculating backflow pressure of an extrusion type coating machine. The extrusion type coating machine comprises a slurry conveying pump, a backflow valve, a coating device and a backflow pipe, wherein the slurry conveying pump communicates with the coating device through the backflow valve, andthe backflow pipe communicates with the backflow valve. The method for calculating the backflow pressure of the extrusion type coating machine comprises the following steps: acquiring slurry and coating related parameters; acquiring a coefficient k value and a coefficient b value in a relational expression Py=k*(Px2-Px1)+b according to determined backflow pressure Py of the backflow pipe, determined first feeding pressure Px1 of the slurry conveying pump and determined second feeding pressure Px2 of the slurry conveying pump under the slurry parameters and the coating parameters; and calculating the backflow pressure of the backflow pipe according to the slurry parameters, the coating parameters, the coefficient k value, the coefficient b value, the first feeding pressure Px1 and the second feeding pressure Px2. With the technical scheme, online closed-loop adjustment of the head weight is realized.

A centrifugal dewatering conveyor system for removing liquid from a conveyed product comprises a modular conveyor belt designed to follow a path that includes both straight portions and helical portions. The modular conveyor belt comprises a plurality of hingedly connected modules having side walls and capable of shifting laterally relative to each other and curling up about the hinge rods to form the helical portions. In the helical portions, a centrifugal force imparted on conveyed product forces water through openings in the conveyor belt.

Provided is an exhaust gas purification device that ensures an improved purification performance and a suppressed pressure loss. An exhaust gas purification device of the present disclosure includes a honeycomb substrate and an inflow cell side catalyst layer. disposed on a surface on the inflow cell side in an inflow side region of the partition wall. When a gas permeability coefficient of an inflow side partition wall portion including the inflow side region of the partition wall and the inflow cell side catalyst layer is Ka and a gas permeability coefficient of an outflow side partition wall portion including an outflow side region at least from the predetermined position to an outflow side end of the partition wall is Kb, a ratio Ka/Kb of the gas permeability coefficients is within a range of 0.4 or more and 0.8 or less.

The invention discloses a separated double-cylinder magnetorheological damper. The damper comprises a first piston cylinder and a second piston cylinder which are arranged in mutual angular communication, the first piston cylinder comprises a piston inner cylinder and a piston outer cylinder which are coaxially arranged, and a magnetorheological fluid circulation channel is formed among the pistoninner cylinder, the piston outer cylinder and the second piston cylinder; a piston rod assembly capable of reciprocating in the axial direction of the piston inner cylinder is arranged in the pistoninner cylinder, a first magnetorheological fluid adjusting mechanism is fixedly arranged at the bottom of the piston inner cylinder, and a second magnetorheological fluid adjusting mechanism is arranged in the second piston cylinder; and the first magnetorheological fluid adjusting mechanism and the second magnetorheological fluid adjusting mechanism are provided with magnetorheological fluid channels capable of supplying magnetorheological fluid to form different flow circulation loops. According to the technical scheme, the damper solves the problems that a passive vibration damping device is difficult to adaptively adjust the limit of the damping force according to working conditions and the control algorithm of the magnetorheological damper is complex, so that independent adjustment ofthe compression force and the restoring force of the magnetorheological damper is realized.

The invention discloses a rotor of a sand making machine and the sand making machine. The rotor of the sand making machine comprises a rotor body. The rotor body comprises a rotor feed port, a screening plate and a lower face plate axially in sequence. Screening holes axially run through the screening plate. The distance between the edge of the lower face plate and the axis of the rotor body is larger than the distance between the edge of the screening plate and the axis of the rotor body. The portion, located between the rotor feed port and the screening plate, of the side face of the rotor body is provided with a first rotor discharge port. The edge of the first rotor discharge port and the edge of the screening plate are partly overlapped. The portion, between the screening plate and the lower face plate, of the side face of the rotor body is provided with a second rotor discharge port. The edge of the second rotor discharge port and the edge of the screening plate are partly overlapped. The rotor can screen materials of different grain sizes, and therefore different magnitudes of smashing energy can be adaptively provided for the materials of different grain sizes in the rotor,and the smashing efficiency of the sand making machine can be improved.

The invention relates to a pesticide mixing device with a good effect, the pesticide mixing device comprises a base, a support rod, a cross rod, a liquid medicine box, a mixing box, a driving mechanism, a moving mechanism, a sealing mechanism and a stirring mechanism. According to the pesticide mixing device with the good effect, the driving mechanism drives the moving mechanism to intermittently move, and the moving mechanism drives the sealing mechanism to intermittently operate, the pesticide liquid flows out intermittently, the moving mechanism drives the stirring mechanism to operate, the pesticide liquid is stirred, and a better mixing effect is achieved. Compared with an existing pesticide mixing device, online stirring and mixing of the pesticide liquid are achieved through linkage of the sealing mechanism and the stirring mechanism, efficiency is improved, meanwhile, the linkage is of a pure mechanical structure, the stability of the device is improved, the service life of the device is prolonged, quantitative inflow of pesticide is achieved through intermittent opening of the sealing mechanism, the better mixing effect is achieved, and compared with an existing stirring mechanism, the mechanism achieves the better stirring and mixing effect through forward and reverse rotation of all stirring rods and generation of cross flow.

The invention relates to a paint spraying and drying integrated room for robot operation. The paint spraying and drying integrated room for robot operation comprises a room body and a circulating air module, the room body is provided with a conveying rail extending into a paint spraying and drying room, and a driving device and a tensioning device are arranged at the two ends of the conveying rail respectively. The conveying rail is provided with a workpiece supporting plate in a sliding connection mode. The paint spraying and drying room is connected with the circulating air module in a penetrating manner. An air supply box is arranged in the circulating air module, and is provided with an air supply pipe connected with the paint spraying and drying room through a pipeline. The paint spraying and drying room is provided with a dynamic pressure chamber which communicates with the air supply pipe. The dynamic pressure chamber is arranged in the paint spraying and drying room and communicates with a static pressure chamber, and the static pressure chamber communicates with an inner cavity of the paint spraying and drying room. An exhaust covered channel is formed below the paint spraying and drying room, the exhaust covered channel communicates with an exhaust chamber, and the exhaust chamber is provided with a hot air circulating pipe which is connected with an air supply box pipeline. According to the paint spraying and drying integrated room for robot operation, three filter layers are used for treating paint mist, and activated carbon is used for adsorbing, replacing and desorbing VOCs in waste gas; and the paint spraying and drying room is connected with the circulating air module for drying and exhausting circulation.