13 results about "Resistance wire" patented technology

The invention relates to the technical field of electric power, specifically to an outdoor rainproof and snow-protecting distribution box cabinet. The outdoor rainproof and snow-protecting distribution box cabinet includes a box body, left and right sides of the bottom of the box body are symmetrically provided with shockproof pedestals, the top of the box body is provided with a flat-top box cover, the top of the flat-top box cover is provided with a pillar, and four waterproof pipelines are buried in a radial direction of the flat-top box cover at uniform intervals; four support devices arearranged on the outer wall of the periphery of the pillar at uniform intervals, the four support devices and the four waterproof pipelines are arranged in a staggered manner, the bottoms of the support devices are in through connection with electric telescopic rods, the tops of the electric telescopic rods are connected with the tops of the inner cavities of the support devices, and the bottoms ofthe electric telescopic rods are connected with scraper plates; and the inner cavities of the waterproof pipelines are provided with heating resistance wires, and the inner wall of the flat-top box cover and the top of the box body are connected through three pressure columns arranged at intervals. The outdoor rainproof and snow-protecting distribution box cabinet provided by the invention can effectively overcome the defects existing in the prior art that the service life and working stability of a distribution cabinet are easy to affect by environment in arctic-alpine regions.

The invention provides a molten lead dissolving and conveying system, comprising a lead melting furnace and a loading rail, wherein the loading rail is arranged on the left side of the lead melting furnace, the lead melting furnace is provided with a conveying pipe, the conveying pipe is arranged at the front end of the lead melting furnace and is internally provided with heating resistance wires, and the heating resistance wires are evenly distributed in the conveying pipe. By additionally arranging the heating resistance wires in the conveying pipe and arranging a temperature detector, temperature detection and heating are performed in the conveying pipe, the temperature control accuracy of the conveying pipe is improved, molten lead is prevented from being solidified due to temperature reduction in the conveying pipe, and the work efficiency is improved.

The invention discloses a processing technology of an iron-chromium-aluminum resistance wire, and relates to the metal processing field; the processing technology includes five technology steps of raw material selection, heating melting, casting molding, cold drawing and annealing treatment; iron, chromium, aluminum, rhenium, molybdenum and the like are selected as processing raw materials, can improve a highest use temperature of the iron-chromium-aluminum resistance wire and increases the service life; the raw materials are powdery so as to facilitate uniform mixing; the raw materials are put into an induction furnace and subjected to heating melting, the heating speed is fast, the production efficiency is high, the material utilization rate can be improved, and production costs are saved; after the resistance wire is subjected to annealing treatment in an electric furnace, the tensile strength of the resistance wire can be enhanced, and the mechanical properties are improved.

The invention discloses a mobile and fixed anti-theft power cabinet, which includes a power cabinet device and a mobile fixing device; the left end of the cabinet door is arranged on the front side of the cabinet body through two upper and lower hinges, and an observation window is arranged on the upper side of the cabinet door. The lower side of the cabinet door is provided with a heat dissipation grill; the horizontal bar is arranged on the upper side of the cabinet body, and the left and right ends of the bar are fixed on the inner walls of the left and right sides of the cabinet body. Several drying bags are evenly arranged on the bar. Anhydrous calcium chloride desiccant is provided; a temperature sensor and a controller are set up and down in the middle section of the inner wall on the left side of the cabinet, an air inlet is provided on the lower left side of the cabinet, a resistance wire is provided inside the air inlet, and a The air outlet is equipped with a cooling fan; the invention is an anti-theft power cabinet that is easy to move and fix, and has a reasonable structural design and a long service life. , low maintenance cost and strong practicability.

The invention discloses a high-precision resistance type heating furnace for a medium-low-temperature optical fiber drawing tower. The high-precision resistance type heating furnace comprises a sharp temperature heating interval formed by a uniform heating module, an inert protective gas circulating system, a temperature control system, a vacuum system and a water cooling system. Compared with the prior art, the high-precision resistance type heating furnace disclosed by the invention has the characteristics that a small electric rod, a resistance wire and a heating ring form a sharp temperature heating zone and the distance between every two hundred-temperature heating zones is strictly controlled. By using the temperature control system, the vacuum control system, the gas circulating system and the water cooling system, temperature distribution of the heating zone is indirectly influenced and further the heating furnace is promoted to form a sharp heating zone. Therefore, the high-precision resistance type heating furnace has the advantages of adoption of simple method, high precision, wide temperature adjustable range, gradient temperature rise, high temperature control precision, stable optical fiber diameter and long service life; and compared with other heating furnaces, the crystallization degree of optical fibers of the high-precision resistance type heating furnace is low.

The invention provides an external display mark of a polyethylene electro-fusion socket pipe fitting and a limiting device for resistance wires. The external display mark of the polyethylene electro-fusion socket pipe fitting comprises a pipe body. Sockets are formed in the pipe body. The outer wall of the pipe body is provided with binding post protective sleeves. Binding posts are arranged in bodies of the binding post protective sleeves. Fusion regions are arranged on the inner wall of the pipe body. The resistance wires are arranged in the fusion regions. One end of each resistance wire is connected with the corresponding binding post. The external display mark of the polyethylene electro-fusion socket pipe fitting is characterized in that the middle of the inner wall of the pipe body is provided with stop keys which make contact with the end face of an inserted pipe; the outer wall of the pipe body is provided with stop key marking ribs; the stop key marking ribs correspond to the stop keys in position; the inner wall of the mouth portion of each socket of the pipe body is provided with limiting grooves.

The invention discloses a planting device for potted strawberries. The planting device comprises a heating box. Support legs are arranged at four corners of the bottom of the heating box. A first groove is formed in the heating box. An electric resistance wire is arranged at the bottom of the first groove. The connection end of the electric resistance wire extends outside the heating box. A planting box is arranged at the top of the heating box. The planting device has the advantages that a water tank and a water pump are arranged, the water pump starts working when planting soil for the potted strawberries needs to be humidified, water in the water tank enters a first water through pipe and a second water through pipe through a water suction pipe under the action of the water pump, the water in the second water through pipe enters a drain pipe and is sprayed out from a nozzle, an air cylinder extends or retracts, the drain pipe is driven to move up and down by a top plate, a gap between the nozzle and a planting basin is adjusted, the water sprayed from the nozzle acts in the corresponding planting basin, and the soil is humidified, so that manual one-by-one humidification is notneeded and the planting device is convenient.

The invention provides protective film pasting equipment for aluminum profile. The protective film pasting equipment comprises a shell; a lifting frame is fixedly installed at the left end of the upper wall of the interior of the shell, and a heating hood is fixedly installed at the lower end of the lifting frame; heating resistance wires are uniformly distributed and fixedly installed on the inner arc surface of the heating hood; a fixed rotation shaft is fixedly installed between the positions, located below the heating hood, of the front wall and the rear wall of the interior of the shell;a heat sealing roller is rotationally installed outside the fixed rotation shaft; swing frames are rotationally installed in the positions, located on the lower right portion of the heat sealing roller, of the front wall and the rear wall of the shell, and a swing rotation shaft is fixedly installed between the left ends of the two swing frames; and a non-adhesive film is heated through the heat sealing roller, and the heated film is closely attached to the surface of the aluminum profile through surface activation. The protective film pasting equipment is convenient to operate and move, low in weight and suitable for secondary film supplementation before the aluminum profile is stored in a warehouse, and the problem that the aluminum profile of which the protective film is damaged cannotbe subjected to film pasting before warehousing is solved.

The invention provides a foam sheet horizontal cutting device. Cutting resistance wires are arranged on a body through lead screws and springs, the lead screws are turned into grades every 1mm, and a deep groove is engraved every 1cm. The body is made of insulation materials and is connected with a power supply box. The foam sheet horizontal cutting device has the advantages that a grade is formed every 1mm in the transverse cutting of a common machine, cutting is carried out with a centimeter as a unit in the cutting process, the lead screws are turned into the grades every 1mm, the marks of the deep grooves are arranged every 1cm, and therefore a lot of wire adjusting time is saved.

The invention discloses an environment-friendly heat preservation bowl achieved by means of human hand heat. The environment-friendly heat preservation bowl comprises a bowl body and a bowl bottom. The bowl body comprises a shell arranged on the outermost layer, and an inner container arranged on the innermost layer. A cavity is formed between the shell and the inner container. A resistance wire is arranged in the cavity. A temperature control switch is arranged at the bottom of the bowl bottom and electrically connected with the resistance wire. The shell comprises a wood layer with low thermal conductivity and a heat insulating layer. The inner container is prepared from, by weight, 1-10 parts of iron and 5-7 parts of aluminum alloy. The human hand heat is gathered through the temperature control switch, large heat is emitted to enable the resistance wire to be red and hot to preserve heat of food, the heat is fully absorbed, energy saving and environment friendliness are achieved, the heat preservation effect is good, and the hand is prevented from being scalded.

The present invention discloses a fermented soybean fermentation tank. The fermented soybean fermentation tank comprises ceramic walls (1) and four square kiln tanks evenly divided by the ceramic walls (1), one fermentation tank (2) is respectively suspended within each of the square kiln tanks, one water bath insulation zone (3) is preserved between each of the fermentation tank (2) and the corresponding square kiln tank, and one water outlet (6) is arranged at the bottom of each of the water bath insulation zones (3); the fermented soybean fermentation tank also comprises a cylindrical heating tank (4) separated by the ceramic walls (1), a water inlet (5) is arranged at the upper part of the heating tank (4), the lower part of the heating tank is respectively communicated with each of the water bath insulation zone (3) via circulation pumps (7), and heating electric resistance wires (9) are arranged on the outer peripheries; and the fermented soybean fermentation tank also comprises temperature sensors (8) arranged in each of the water bath insulation zone (3) and a controller (10), and the controller (10) is respectively connected with switches of each of the temperature sensors (8), each of the circulation pumps (7), each water outlets (6) and heating electric resistance wires (9). The fermented soybean fermentation tank uses the water bath to conduct insulation and is stable in quality.

The invention discloses a method and a device for manufacturing a semi-hard or soft tantalum wire. The device comprises an unwinding device, an annealing device and a winding device; the unwinding device comprises unwinding wheels and guide wheels located at an inlet of the annealing device; the winding device comprises winding wheels and guide wheels located at an outlet of the annealing device;the annealing device comprises an upper guide box, a heat insulation box and a lower guide box sequentially from top to bottom; inner guide pipes are arranged inside the upper guide box and the lowerguide box; and a lifting cabinet type heater is arranged inside the heat insulation box and comprises guide columns, upper fixed connection blocks, resistance wires and lower fixing plates from top tobottom. The invention further discloses the method for manufacturing the tantalum wire. The tantalum wire is annealed inside the heater at the temperature ranging from 1,150 DEG C to 1,250 DEG C, winding is performed while unwinding, and the hard tantalum wire can be changed into the semi-hard or soft tantalum wire according to the different winding speeds. By the aid of the device and the method, straightening can be avoided after annealing of the tantalum wire, double purposes can be achieved through one effort, and thus the production efficiency is high.