45results about How to "Avoid production safety hazards" patented technology

The invention discloses a fluorosurfactant free of perfluorooctanoic acid as well as a preparation method and a process system of the fluorosurfactant. The fluorosurfactant is a repeated structure unit which comprises at least one oxoperfluoropropenyl and one or a combination of more of perfluoromethoxyl, a Y group and oxoperfluorovinyl and is provided with a carboxyl group or carboxylate at one end. The fluorosurfactant is a fluoropolymer with the C-O-C ether bond structure as the main structural body; in view of indexes, the fluorosurfactant does not contain perfluorooctanoic acid with a 8-C straight-chain structure or salt of the perfluorooctanoic acid, is easily decomposed in nature and is proved to be harmless to human bodies, the peroxide value is 0.001%-0.1%, the surface tension is 10-30 mN/m, and the fluorosurfactant has an amphiphilic structure of a surfactant.

The invention discloses an autoclaved aerated concrete product production line system and a control method thereof, and relates to the technical field of autoclaved aerated concrete manufacturing. A ball mill health real-time monitoring unit is arranged in a ball mill. A stirring control unit is arranged in a stirrer. The ball mill ball mill health real-time monitoring unit is connected with a system control server through a first PLC, a slurry density modulation unit is connected with the system control server through a second PLC and a first upper computer, the stirring control unit is connected with the system control server through a third PLC and a second upper computer, and an infrared laser sensor and a green body hardness detector are connected with the system control server through a fourth PLC, an industrial camera, a sewage collector, an infrared sensor, a stacker crane and a sorting robot. The system solves the problems of low operation efficiency, low safety and reliability, low productivity and the like caused by manually controlling equipment operation of a production line. The production and allowable cost of an enterprise is reduced through differential control metering and the like.

The invention discloses an automatic pipeline cutting machine for electrical equipment, and relates to the technical field of electrical equipment. The automatic pipeline cutting machine comprises a box body. The bottom of the inner wall of the box body is fixedly connected with a first motor. The surface of an output shaft of the first motor is sleeved with a first belt wheel. The left side of the bottom of the inner wall of the box body is rotationally connected with a rotary rod through a connecting rod. The surface of the rotary rod is sleeved with a second belt wheel. The surface of the second belt wheel is in transmission connection with the surface of the first belt wheel through a belt. A rotating rod is fixedly connected to the surface of the axis of the back face of the second belt wheel. The end, away from the second belt wheel, of the rotary rod is in sliding connection with a transmission device. According to the automatic pipeline cutting machine for the electrical equipment, a pipeline is pushed automatically, workers are prevented from doing manual pushing, production potential safety hazards caused by manual cutting are avoided, the efficiency of cutting the pipeline is greatly improved, and the overall pipeline machining efficiency is improved.

The invention discloses a fully-mechanized mining face scraper conveyor chain state detection device and method, and relates to the technical field of chain detection. The detection device comprises amagnetic field generation device and a magnetic field detection device. The magnetic field generation device comprises an adjustable direct-current source and a multi-turn coil. The magnetic field detection device comprises a detection probe, a polarizer, an optical fiber circulator, a broadband light source and a photoelectric detector. The detection probe comprises a reflection mirror, a magnetic induction coil and a magneto-optic crystal. The detection probe gets close to a chain through an adjustment support to achieve online detection. According to the fully-mechanized mining face scraper conveyor chain state detection device and method, the scraper conveyor chain is magnetized firstly, mutual inductance is generated between a leakage magnetic field generated by chain defects and themagnetic induction coil of the detection probe, a magnetic signal generated by mutual inductance in the magnetic induction coil is converted into an optical signal in the magneto-optic crystal, the optical signal is then converted into an electrical signal, a state signal of the chain is obtained through signal processing, real-time online detection of the chain can be achieved, it is ensured that a scraper conveyor safely and stably operates, and coal mine production potential safety hazards are avoided.

The invention belongs to the technical field of application of goods hoisting assembly accessories, and particularly discloses an overhead rail pulley assembly for assembling streamline. The overhead rail pulley assembly comprises a left supporting plate, a right supporting plate, a group of first roller assemblies, a group of second roller assemblies, horizontal supportive connecting plates, and adjusting and supporting assemblies, wherein the group of first roller assemblies and the group of second roller assemblies are respectively arranged on the left supporting plate and the right supporting plate, the horizontal supportive connecting plates are respectively connected with the left supporting plate and the right supporting plate, the adjusting and supporting assemblies are matched with the horizontal supportive connecting plates for use, porous grooves are respectively formed in the left supporting plate and the right supporting plate correspondingly, the horizontal supportive connecting plates are connected with the left supporting plate and the right supporting plate through the porous grooves. The overhead rail pulley assembly has the beneficial effects of being reasonable in an overall stainless steel structure design, strong in toughness and excellent in corrosion resistance and wear resistance, the group of first roller assembly and the group of second roller assembly can ensure the running stability and high efficiency of the overall structure, and the adjusting and supporting assembly can ensure the conveying stability of hoisted goods or products and completely eradicate the hidden production safety.

The invention discloses a method for solving oxidation material rushing-out in preparation for oxalic acid by virtue of starch, comprising the following steps of: (1) hydrolyzing the starch in an acidic condition to prepare a monosaccharide liquid; (2) adding an oxalic acid crude product centrifugal mother liquid in a reaction container with an added amount which is 1/3-1/2 of the whole reaction volume, replenishing concentrated sulphuric acid in a volume which is 5-20% of the total volume of the monosaccharide liquid and a catalyst simultaneously, and then adding an initiator; and adjusting the temperature of the reaction system to be above 50 DEG C, and adding nitric acid in a volume by volume concentration of 50-90%; and (3) immediately adding the monosaccharide liquid obtained in the step (1) after the nitric acid and the initiator start to react, and enabling the nitric acid and saccharides to start to react, so as to generate the oxalic acid. The method disclosed by the invention has the beneficial effects that the material rushing-out phenomenon generated by the directly serious initiation of monosaccharides and the nitric acid during an initiation process in the starting phase of the traditional preparation for oxalic acid by virtue of a starch-nitric acid oxidation process is avoided, and the production potential safety hazards brought by the material rushing-out phenomenon aforementioned are thoroughly solved; and moreover, the method is extremely low in investment cost without influence on the cost of the oxalic acid, high in safety, convenient to operate and extremely easy to popularize.

The invention discloses a high-efficiency and energy-saving manganese washing process without arranging a tailing pond and polluting the environment. The mined manganese slime is broken by a manganese slime breaking machine and then is washed by a manganese slime manganese-washing machine to obtain manganese ore, the water for washing the manganese slime enters a tailing slime water collecting tank and separated through a tailing treatment machine, the clean water is reused and the slime is back filled. The invention has the advantages that: firstly, the manganese washing is locally carried out after mining the manganese ore, therefore, the link of manganese ore slime transport is reduced and the production and transportation cost is reduced; secondly, water resources are saved and the pollution to the environment is also avoided due to the recycling of the manganese washing water; thirdly, no tailing pond is required, not only the land occupation is little, but also the original potential safety hazard of production of the tailing pond is overcome and the construction investment is reduced; and fourthly, the manganese slime breaking machine is additionally arranged, therefore, the problem that the large manganese slime cannot enter the machine before or the damage to the manganese washing machine is great is solved, and the ore washing efficiency is greatly improved by 35 percent than the original process efficiency.

The invention discloses a steel material texture detection method and a device utilizing same, and is used for detecting a steel material texture of a workpiece during processing in a numerical control angle steel typing punching shearing production line/a numerical control plate material punching typing machine. The detection method includes the following steps: (1) arranging a pressure detection device on the numerical control angle steel typing punching shearing production line/the numerical control plate material punching typing machine, and employing the pressure detection device to acquire a pressure numerical value when the workpiece to be detected is punched; (2) building a standard punching pressure database of angle steel/plate materials with various textures in a microcomputer, comparing and judging the database with the acquired pressure numerical value, and displaying the judged result through a human-computer interaction interface of the microcomputer; and (3) when the judged result displayed in the human-machine interaction interface is inconsistent with the texture of the workpiece in a processing batch, starting an alarm device for alarm by the microcomputer, and reminding an operator to take out the problem workpiece. The detection method can detecting the texture of each angle steel or each plate material used in a production process, and is accurate and quick.

The invention discloses a continuous production technology of a fluorine-containing surfactant without perfluorocaprylic acid. The continuous production technology comprises the following steps: using perfluoroolefine, oxygen and a third monomer as reaction raw materials, and adopting a photooxidation reaction loop, a hydrolysis unit and a salt-forming configuration unit respectively to prepare a fluorine-containing surfactant finished product using a C-O-C ether bond structure as a structure body. The finished product indexes not only meet that perfluorocaprylic acid and salt thereof are not contained, the fluorine-containing surfactant is easily degraded in the nature, but also meet data ranges that the peroxide value is 0.001-1% and the surface tension is 10-30 m/Nm. An amphipathic structure having the surfactant has advantages of high product yield, small product quality fluctuation and the like.

The invention discloses a wind gathering type weeding machine. The wind gathering type weeding machine comprises a trimming roller, grass trimming wheels, a guide roller and a motor which are arrangedon a frame, wherein the trimming roller is fixedly arranged at the central part of the frame through a rotating shaft; a plurality of rows of convex blades are arranged on the rotary surface of the trimming roller; the blades are uniformly arranged at intervals along the axial direction of the trimming roller; two ends of the rotating shaft are arranged on the frame through bearing pieces; the motor is also arranged on the frame; the motor and the rotating shaft are in transmission through a belt; a draught fan mounting frame is also arranged at the rear side of the frame; a first draught fanand a second draught fan are symmetrically arranged on the draught fan mounting frame; the air outlet of the first draught fan and the air outlet of the second draught fan face the motor; a transmission shaft is arranged at the front side of the trimming roller; the transmission shaft and the trimming roller are axially arranged in parallel; the grass trimming wheels are also arranged on the frame; the grass trimming wheels are fixedly arranged at two sides of the trimming roller through bearing pieces respectively; and the grass trimming wheels respectively located at two sides of the trimming roller are symmetrically arranged.