32results about How to "Avoid occupational hazards" patented technology

The invention belongs to the technical field of welding equipment, and relates to outdoor large-diameter pipe welding equipment, in particular to large-diameter steel pipe double-welding-gun intelligent welding equipment. Two semicircular rings surround a large-diameter pipe to be welded in middle, and the axes are overlapped; an annular motor drives an annular car to rotate along a ring; an axial motor drives welding guns to move in a direction parallel to the axes; a radial motor drives the welding guns to move in the radial direction; and a swing motor I drives the welding guns to swing. The large-diameter steel pipe double-welding-gun intelligent welding equipment can finish annular welding lines, can realize multi-layer and multi-way welding and swing welding, is high in welding efficiency, and guarantees the quality stability. The large-diameter steel pipe double-welding-gun intelligent welding equipment reduces labors and the labor intensity, prevents occupational injury, solves the problem of welder shortage, reduces the labor cost, uses double welding guns to improve the working efficiency twice, can weld multiple curved welding lines, is flexible in carrying, and is suitable for outdoor construction and use.

The invention discloses a taper double control automatic vacuum lead smelting furnace. The taper double control vacuum lead smelting furnace integrates a preheating cabin with a melting cabin, the solar heating and the electric heating are automatically switched, and the taper vacuum lead smelting furnace fully uses waste heat. In the production process, not only can the solar thermal energy be effectively used, but also the heat energy generated in the production process is also fully recycled, and the energy-saving goal is achieved; the lead fume generated in the lead melting furnace is collected in an airtight mode and passes through an oxidizing furnace, then the original lead smoke and the lead smoke generated by the oxidizing furnace are discharged to a tail gas purifying system in an airtight mode, and the occupational hazard and the environmental pollution are fundamentally prevented from occurring effectively.

The invention discloses a modified fibre enhanced foaming cement composite floor. The modified fibre enhanced foaming cement composite floor comprises a wearing layer, a decorative layer, an insulating layer and an interface connecting layer. The decorative layer is arranged below the wearing layer, the insulating layer is arranged below the decorative layer, and the interface connecting layer isarranged below the insulating layer. The preparation method comprises the steps of preparing modified fibre, making an insulation plate, making the insulating layer, and post processing of the insulating layer. The modified fibre enhanced foaming cement composite floor has the advantages of high compressive strength, sound insulation, low thermal conductivity, steady chemical property, environmental protection, small deformation and the like. The construction only needs to use special adhesive mortar to paste directly in the base layer, the working procedure is few, the construction is quick,and the efficiency is high. Product tight seam splices, maintenance and replacement are convenient.

The invention relates to an intelligent control device for drying bright beads of fireworks and firecrackers. The intelligent control device comprises a human-machine interface operating system, a PLC (programmable logic controller) and a frequency converter control system, a drying air heater and an air supply system thereof, and a temperature-humidity sensor control system. The intelligent control device has the advantages that the technical level in the intelligent monitoring for the temperature and the humidity of a drying chamber for drying the bright beads is improved, the human-machine separation is realized, major production safety accidents about drying the bright beads in the production process of the fireworks and the firecrackers are effectively prevented and avoided, and the occupational hazard of firework agents to operators is prevented; simultaneously, due to the PLC and the frequency converter control system, the production process for drying the bright beads in the production process of the fireworks and the firecrackers is optimized; due to a frequency converter is adopted to drive the drying air heater, the speed adjusting performance is excellent, the power-saving effect is obvious, closed-loop control for the temperature and the humidity of the drying chamber is realized, the operating frequency of the hot air heater is accurately adjusted, the quality of products is improved, the production cost is reduced, the automation and the intelligentization in production of the bright beads of the fireworks and the firecrackers are realized, and the supporting platform of new technologies and safety technologies is improved.

The invention discloses an air screen dustproof helmet and an air screen dustproof method. The helmet comprises a cap shell, a helmet sandwiched layer, a cap lining and a jowl band, wherein an air screen injection system and an air source are arranged on the helmet, and the air source is connected with the air screen injection system. The dustproof method comprises the following steps of: fixing the helmet by using the jowl band; connecting an air source pipeline; opening a gas cylinder valve or a compression air pressure reduction valve; regulating a valve on the helmet to make air form an air screen at a certain flow speed along a helmet face from a nozzle; regulating a branch pipe valve to lead a certain amount of air to enter from the helmet sandwiched layer; and forming positive pressure between the helmet face and the air screen. The air screen dustproof helmet is applied to a production place suffering harmful dust, and occupational hazard of dust to a worker can be effectively prevented; the dustproof helmet is free from limitation of a worker face, worker sight is not affected, the strength of the air screen can be regulated, the dustproof helmet can be applied to environments having different dust contents, and pneumoconiosis occurrence of employee can be effectively prevented or reduced, and safety production is ensured.

The invention discloses a dust removing device for a wood floor of a container. The device comprises a motor, a travelling trolley, an air blower, a dust bucket and a dust collecting tube, wherein the motor comprises a travelling motor and a transverse moving motor; the travelling motor is connected with the travelling trolley; the air blower, the dust bucket and the dust collecting tube are arranged on the travelling trolley and sequentially connected; a transverse slide rail is arranged at one side of the travelling trolley and is in the direction vertical to the travelling direction of the travelling trolley; the dust collecting tube can be driven by the transverse moving motor to slide along the transverse slide rail by reciprocating. When the device enters the container, the dust collecting tube can move forwards along with the travelling trolley and can also transversely move along with the transverse slide rail by reciprocating; therefore, the dust collecting range of the dust collecting range can cover the wood floor of the container. According to the device, the wood flour removing mode of the wood floor of the container is changed; the original manual irregular removal is replaced by automatic regular removal, so that the working environment of a workshop in the container can be improved, the labor intensity can be reduced, and meanwhile, occupational hazard can be avoided.

A water process energy-saving granulation technology for red lead production comprises the following steps: (1) dedusting cooling (pretreatment); (2) screw conveying; (3) re-conveying; (4) deironing; (5) granulator starting; (6) water process granulation; and (7) exhausting dedusting. The technology has the advantages of simple process, easiness in operation, realization of automatic streamline working of the production flow of red lead, increase of the production efficiency, energy saving, consumption reduction, and avoiding of occupational hazards; and iron in lead powder is removed to provide guaranteeing for the production of the high-quality red lead product.