34results about How to "Play a role in gathering" patented technology

The present invention provides a novel telescopic natural gas leak detection alarm. The novel telescopic natural gas leak detection alarm has the advantage of simple structure and convenient operation. The novel telescopic natural gas leak detection alarm comprises a shell and a base. The novel telescopic natural gas leak detection alarm is characterized in that a support A is arranged on the base; the support A is connected with a support B through a rotating device; a telescopic bracket is arranged in the support B; the telescopic bracket is connected with the shell; the front end of the shell is provided with a horn opening; an infrared gas analyzer and an alarm are arranged in the shell; a temperature sensor is arranged in the infrared gas analyzer; the infrared gas analyzer is electrically connected with the temperature sensor; the temperature sensor is electrically connected with a controller; and the controller is electrically connected with an alarm. The front end of the shell is provided with the horn opening, so that an aggregation effect can be realized when natural gas leaks; the support A is arranged on the base, and the support A is connected with the support B through the rotating device, and therefore, adjustment of the angle of the novel telescopic natural gas leak detection alarm can be facilitated; and the telescopic bracket is arranged in the support B, and the telescopic bracket is connected with the shell, and therefore, the use range of the novel telescopic natural gas leak detection alarm can be expanded.

The invention discloses a high-precision natural gas leakage detector based on the Internet of things. The natural gas leakage detector comprises a natural gas leakage detector body and an LED display screen, the natural gas leakage detector body is internally provided with an MCU processor, the MCU processor is electrically connected with a power supply, the LED display screen and a control button, a sensor assembly is electrically connected with the MCU processor via a signal collecting and processing circuit, a wireless communication module is in signal connection with a remote monitoring terminal, and the MCU processor is electrically connected with a memory. The sensor assembly analyzes component concentration of natural gas, the MCU processor emits alarm signals when the component concentration reaches a certain value, false alarm is unlikely to occur, and alarming is more accurate; and at the same time, a photoelectric detector can increase leakage parameters that are processed by the MCU processor, so that the detector is more reliable and higher in precision.

The invention discloses a lifting-following device of a tower crane cable. The lifting-following device comprises a main plate, two U-shaped attaching plates and two insulation pulleys, wherein the two U-shaped attaching plates are fixed at the same side of the main plate, and the two U-shaped attaching plates are both buckled with the main plate and are symmetrically arranged and openings of the attaching plates are basically horizontal; installing parts of the insulation pulleys are arranged between the U-shaped attaching plates and the main plate, inclined, opposite and coincident slideways are arranged on the main plate of each installing part and on the board, which is opposite to the main plate, of each U-shaped attaching plate, and the slideways are symmetrically arranged in a reverse V shape; insulation pulleys are arranged in the slideways through pulley shafts, and a space formed between the two pulleys is utilized as a cable channel; and the two sides of the lower end of the main plate are both provided with long-shaped screw rod holes, the two sides of the rear of the main plate are respectively provided with U-shaped bolt hoops, and a horizontal butt strap is arranged between the two U-shaped bolt hoops. The lifting-following device provided by the invention can fix the tower crane cable so that a cable can upward move along the rise of the tower crane, a cable is prevented from being damaged in a lifting process, the lifting efficiency of tower crane equipment is improved, and the lifting-following device is safe and beautiful.

The invention belongs to the technical field of electric protection devices and particularly relates to an alloy fuse. The alloy fuse comprises an alloy effect point and a wire connected to the two ends of the alloy effect point. The alloy effect point is a flat flaky fuse piece. The thickness of the fuse piece is smaller than the diameter of the wire. A plurality of through holes are formed in the fuse piece. The outer surface of the fuse piece is wrapped by a polymer material layer. The alloy effect point is in a flat flaky shape and provided with the through holes, fusing weak points are formed by increasing or reducing the number of through holes, so relative power is reduced, fusing characteristics are easy to control, and material waste is reduced. The outer surface of the fuse piece is wrapped by the polymer material layer, on one hand, the heat gathering and balancing function can be achieved, on the other hand, the arc extinguishing effect can be achieved, the alloy effect point can be fused precisely in time, accordingly the breaking capacity of the alloy fuse is effectively improved, and products are safer and more reliable.

The invention provides a range hood. The range hood comprises a shell, a first isolation structure and a heat exchange part, wherein the shell comprises an accommodating cavity; the first isolation structure separates the accommodating cavity into a smoke discharge cavity and an air supply cavity; the shell also comprises a smoke inlet and a smoke outlet, which are communicated with the smoke discharge cavity; the shell also comprises an air inlet and an air outlet, which are communicated with the air supply cavity; the air outlet comprises a first air outlet; the heat exchange part is arranged in the air supply cavity; the smoke inlet and the first air outlet are formed at the bottom of the shell; the first air outlet faces down and is formed outside the smoke inlet in the circumferential direction. The problem in the prior art that the range hoods with the refrigeration function do not discharge smoke thoroughly and have low smoke discharge efficiency is effectively solved by adopting the technical scheme.

The invention discloses a tower crane cable lifting following device. The device comprises a main board, two U-shaped attached boards and two insulating pulleys, wherein the two U-shaped attached boards are fixed on the same side of the main board, buckled with the main board, symmetrically arranged, and provided with openings basically in the horizontal direction; the installation part of each insulating pulley is arranged between each U-shaped attached board and the main board; inclined, opposite and overlapped slide rails are arranged on the main board of each installation part, and the surfaces of the U-shaped attached boards opposite to the main board in a splayed symmetrical arrangement mode; each insulating pulley is arranged in each slide rail through a pulley shaft; a space formed between two pulleys is taken as a cable channel; the two sides of the lower end of the main board are provided with long screw holes; the two sides of the rear surface of the main board are provided with a U-shaped bolt hoop respectively; and a horizontal lap board is arranged between two U-shaped bolt hoops. A tower crane cable is fixed, so that the cable can smoothly move upwards with the lifting of a tower crane, the cable is prevented from being damaged in the lifting process, the lifting efficiency of tower crane equipment can be improved, and the device is safe and attractive.

The invention discloses an floating oil absorption system for sewage treatment, which comprises a columnar floating oil absorption tower, a cylindrical floating oil absorption tank in the floating oilabsorption tower, a sewage leading-in pipe and a sewage leading-out pipe, the outlet of the sewage leading-in pipe is communicated with the floating oil absorption tank, and the inlet of the sewage leading-out pipe is communicated with the floating oil absorption tank. The floating oil absorption device is simple in structure, wherein the disc-shaped floater divides the circular liquid level intothe continuous vortex-shaped floating oil absorption water channel, and the floating oil collection hole of the floating oil absorption device can gradually sweep through the position below the liquid level of the vortex-shaped floating oil absorption water channel in the anticlockwise vortex direction; besides, the first floating oil guide blades and the second floating oil guide blades play a role in gathering floating oil, so that the vortex-shaped floating oil in the water channel can be absorbed more thoroughly.

The invention discloses a light collector. The light collector comprises a lens array plate, a light collecting hole array plate, a light guide groove and a lateral light collecting system; the lightcollecting hole array plate is arranged in the light guide groove; the bottom of the light collecting hole array plate is provided with first-stage reflecting bodies; the lateral light collecting system is arranged on one side of the light guide groove; the lens array plate is arranged above the light guide groove; and the lens array plate and the light guide groove form an integrated closed structure. According to the light collector of the invention, light is irradiated into the light collecting hole array plate through the lens array plate; the reflecting bodies on the light collecting holearray plate are used for reflecting and transmitting the light one by one, and further transmitting the light to the lateral light collecting system; and finally, the light collector can concentrateall the light emitted from the lens array plate into one beam, so that a very strong light collecting effect is generated. The light collector of the invention has the advantages of simple structure,reduced manufacturing cost, decreased size and more convenient installation.

The invention discloses a method and system for treating red mud, wherein the method for treating red mud includes: drying the water-containing red mud to obtain dried red mud; finely grinding the dried red mud to obtain ultra-fine red mud Fine powder; red mud superfine powder is pre-reduced and dealkalized in a fluidized bed under a reducing atmosphere to obtain dealkalized red mud and high-alkali dust; dealkalized red mud is mixed with reducing agents and additives , in order to obtain red mud agglomerates; direct reduction treatment of red mud agglomerates in a rotary hearth furnace in order to obtain metallized pellets; and conduct grinding and magnetic separation of metallized pellets in order to obtain iron powder and tailings scum. Therefore, the method can effectively remove alkali metals in red mud, and solve the technical problems of low dealkalization rate of red mud, poor iron reduction effect and difficult iron recovery. At the same time, by adding additives, the iron particles are reduced and aggregated, which facilitates the subsequent separation of slag and iron through physical separation.

The invention discloses an alfalfa transplanting device and a using method thereof, and belongs to the technical field of pasture transplanting. The alfalfa transplanting device comprises a digging part, a pruning part, a conveying part, a seedling storage part, a compaction part and an irrigation part which are all fixedly connected to a vehicle body. According to the alfalfa transplanting device and the using method thereof, a novel mechanical device is provided for current alfalfa transplanting, and a large amount of manpower and a large number of material resources are intentionally saved.

The invention discloses a blue-green algae fishing device for lake water environment treatment, and belongs to the technical field of polluted water treatment. A blue-green algae fishing device for lake water environment treatment comprises a collecting box, a fishing transmission frame is arranged on the front side of the upper end of the collecting box, the lower side of the fishing transmission frame is fixedly connected with the front edge of the upper side of the collecting box, an anti-overflow cover is connected to the upper end of the collecting box, and an opening of the anti-overflow cover corresponds to an opening of the fishing transmission frame; expansion plates are arranged on the two sides of the salvage transmission frame correspondingly, two sets of collection hoppers are connected to the bottom face of the collection box, collection pipes are fixedly connected to the lower ends of the collection hoppers, a discharging assembly is arranged at the upper ends of the collection pipes, and a collection assembly is fixedly connected to the lower ends of the collection pipes; the rear side end of the collecting box is fixedly installed below the salvage ship body, and the output end of the collecting assembly communicates with a storage box of the salvage ship body. The problem that in the prior art, a blue-green algae fishing device is low in fishing efficiency is solved.

The invention provides an electromagnetic cooker. The electromagnetic oven provided by the present invention comprises: an upper cover (10), a cover plate arranged on the top surface of the upper cover (10), a bottom case (20), a circuit board (21) arranged in the bottom case (20), a coil disk (22), the fan (30), and the air guide cover arranged on the periphery of the fan (30), the side wall (25) of the bottom case (20) is provided with a side air inlet (23), and the air guide cover is close to the side air inlet One side of (23) is provided with a fan air inlet, and the side of the air guide cover near the inside of the induction cooker is provided with a fan air outlet, and at least part of the air guide cover is arranged on the upper cover (10). The induction cooker provided in this embodiment not only prevents impurities from being sucked into the induction cooker, but also reduces the difficulty of assembling the induction cooker.

The invention discloses gas kitchenware with a warning function and relates to the technical field of gas stoves. The gas kitchenware specially comprises a cooking bench, assistance parts and a warning mechanism. Cooking burners are arranged on the surface of the cooking bench, and ventilation holes are formed in the bottoms of the surfaces of fire blocking pipes. The assistance parts are distributed on the peripheries of the fire blocking pipes. A smoke sucking plate is connected to one side of the cooking bench. An air suction pump is fixed to the bottom of the cooking bench. A filtering netplate is arranged on the surface of the smoke sucking plate, a hanging rod is arranged on one side of the surface of the smoke sucking plate, and the warning mechanism is arranged on the other side of the surface of the smoke sucking plate. By means of the gas kitchenware with the warning function, when gas leakage happens and gas is not diffused in a large range, a gas probe can induct the leaking gas and an alarm is started for raising the alarm for people so that people can be prompted to close a gas valve rapidly and conduct checking, a signal transmission module is arranged in the alarmso that alarming information can be directly sent to a mobile phone, and the phenomenon that no people stay at home and no people can know the conditions is avoided.

The invention discloses an energy-saving stove. The energy-saving stove comprises a stove body assembly, a residual smoke utilization assembly, feet and an electric control cabinet. According to the energy-saving stove, the residual smoke utilization assembly is arranged, the high-temperature smoke in a stove body is conveyed to a residual smoke utilization box through a smoke outlet pipe, NO in the smoke is cooled and reduced through water in a water tank, the nitrogen content in the smoke is reduced, the low-nitrogen gas is conveyed to the lower part of a fire grate by an exhaust fan, the inlet gas is uniformly distributed in the stove body, coal in the stove body is fully combusted, smoke baffles play a role in buffering the smoke, the contact time of the smoke and the water tank is prolonged, the sufficient reduction of the NO in the smoke is guaranteed, the pollution of tail gas to the surrounding environment is avoided, and the purposes of energy conservation and emission reduction are achieved while coal resources are saved; and the stove body assembly is arranged, a heat insulation layer plays a role in heat insulation of the stove body, heat loss through the stove body isreduced, the heat utilization efficiency is improved, smoke collecting rings play a role in collecting the upward smoke, and the smoke can smoothly enter the interior of the residual smoke utilizationbox through the smoke outlet pipe.