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 surface-to-air-missile-type red lead energy-saving oxidizing furnace which comprises an oxidizing furnace body, wherein the oxidizing furnace body 1 is a cylinder structure, and is divided into an upper furnace body, a middle furnace body and a lower furnace body from top to bottom; and aluminum silicate fiber felt is wrapped around the outside of the oxidizing furnace body to achieve the effects of thermal insulation and sound insulation, and is fixed by a four-foot bracket. Heat generated by electric heating is blown by a Root's blower and directly sent into the oxidizing furnace via a heat transfer tube, thereby supplying heat to the raw material. The surface-to-air-missile-type red lead energy-saving oxidizing furnace can implement clean production to avoid environmental pollution, can implement quick preparation of red lead, enhances the production efficiency, maximally utilizes the energy, implements the microcomputer control on the oxidizing process, avoids the occupational hazards, and ensures good health of the staff.

The invention relates to a liquid cooling system for a device, which comprises a heat exchanger and two circulation loops including an oil circulation loop and an ice water circulation loop, wherein the oil circulation loop forms a closed loop by connecting an oil storage tank, a circulating pump, a main shaft of the device and the heat exchanger in turn through circulating oil pipes, and the ice water circulation loop forms a closed loop by connecting an ice water source and the heat exchanger in turn through circulating water pipes; and the cooling oil in the oil circulation loop and the ice water in the ice water circulation loop perform heat exchange in the heat exchanger so as to cool the oil temperature on the main shaft of the device. The liquid cooling system uses the circulation of a cooling medium ice water of the heat exchanger to take away the heat of oil cooling engine oil, and compared with the prior art, compressors and heat radiators for discharging the heat in a workshop out of the workshop are not needed. The liquid cooling system not only reduces the temperature of a working condition, but also removes a compressor radiator fan and prevents workers from being harmed by occupational diseases caused by dust and the like, and the working condition is comparatively comfortable.

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.

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 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 discloses an automatic metal pipeline outer wall plastic coating machine which comprises a fixing frame rail, an intelligent plastic spraying system and two rotary driving fixing frames;the two rotary driving fixing frames of the same structure are symmetrically arranged and installed on the fixing frame rail and can move along the fixing frame rail; when a to-be-sprayed pipeline isinstalled between the two rotary driving fixing frames, the two rotary driving fixing frames retreat to the tail ends of the two sides of the fixing frame rail, and after the to-be-sprayed pipeline is inserted into center holes of the rotary driving fixing frames on the two sides, the rotary driving fixing frames on the two sides advance to a machining position and clamp the to-be-sprayed pipeline; and the intelligent plastic spraying system is arranged on one side or two sides of the to-be-sprayed pipeline and used for coating the to-be-sprayed pipeline with plastic. The automatic metal pipeline outer wall plastic coating machine is high in intelligent degree, high in productivity, high in plastic spraying quality uniformity and good in plastic spraying effect, and is excellent large-diameter metal pipeline plastic spraying equipment.

The invention discloses an environment-friendly bitumen dissolving and conveying system and method in the carbon product industry. A heat exchange pipe in a storage tank of the system is connected with a heat exchanger and a hot oil furnace through control valves respectively. The upper end of the storage tank is provided with a solid bitumen inlet, a liquid bitumen inlet and a smoke exhaust port. The liquid bitumen inlet is communicated with a liquid storage stank through a pipeline and a control valve. The smoke exhaust port is connected with a purifier through a fan. The lower end of the storage tank is communicated with an oil conveying tank through a pipeline and a control valve. The oil conveying tank and the liquid storage tank are connected with a compressed air pipe through control valves respectively. A discharge pipe is arranged on the oil conveying pipe. An internal liquid sensor and a temperature sensor are arranged in the storage tank. Raw materials are under completely sealed conditions since entering stations, automatic production is realized, the working environment is good, bitumen-induced occupational injuries and pollution of bitumen to the air are avoided, energy conservation and environmental protection are achieved, and damage to pumps and valves due to bitumen solidification cannot be caused.

The invention discloses a novel hydraulic wear-resisting sealing ring and a machining process. The novel hydraulic wear-resisting sealing ring comprises a sealing ring body, a groove and an oil discharge trough. The groove is formed in the edge of one side of the inner diameter of the sealing ring body. The oil discharge trough is correspondingly formed in the other face, opposite to the groove, of the sealing ring body. The machining process comprises the following steps of firstly, raw material selecting, secondly, raw material mixing, thirdly, injection molding, fourthly, turning and fifthly, checking and packaging. Components comprise, by weight percent, 100-150 parts of modified TPU, 2-3 parts of a tackifier, 2-3 parts of phyllosilicate powder, 2-3 parts of a release agent and 2-3 parts of color masters. According to the novel hydraulic wear-resisting sealing ring and the machining process, the occupational hazard brought by the situation that employees are in contact with the dust process is thoroughly eradicated; and the process that nonferrous metal (bronze powder) is used as a filling material is omitted, and the danger brought by the nonferrous metal to the environment iseradicated.

The invention discloses grenade powder surface finishing equipment which comprises an anti-explosion chamber, a conveying device and a finishing device. An anti-explosion window used for transmitting grenades is arranged on one side of the anti-explosion chamber, and the anti-explosion window can be automatically closed and opened in the working process; the conveying device is arranged close to the outer part of the anti-explosion window and comprises a conveying belt and a tray which is arranged on the surface of the conveying belt and is used for placing grenades, and a transfer manipulator is arranged on one side of the conveying device; the trimming device is arranged in the anti-explosion chamber and comprises an overturning mechanical arm close to the inner side of the anti-explosion window and a workbench close to the overturning mechanical arm, the overturning mechanical arm is used for receiving and overturning the grenades from the transferring mechanical arm, and a grenade body bin matched with the grenades in external size is arranged on the workbench. Compared with the prior art, the equipment is reasonable in design, simple in structure, capable of achieving automatic, rapid and safe milling, drilling, smashing and purging of flanges on medicine surfaces, high in safety and high in efficiency, and the labor intensity of workers is effectively reduced.

The invention discloses a method and corollary equipment for cutting NOL ring test splines by water jet, a water jet cutting method is adopted to cut an NOL ring, a notch is smooth and burr-free, the operation process is simple, potential safety hazards are avoided, batch cutting of the NOL ring test splines can be realized, and the cutting efficiency is high. According to the corollary equipment, the lower clamping ring and the upper clamping ring are adopted to form the cavity for clamping the NOL ring, and in addition, the design of the notch and the positioning plate is matched, so that the requirements of the cutting size and the cutting precision of the NOL ring test sample strip can be effectively met.