33results about How to "Protect occupational health" patented technology

The invention relates to a method for extracting metal zinc powder with different purposes from zinc dross, in particular to a method for treating zinc dross by adopting ore grinding and dust collection equipment and metallurgical equipment as well as a metallurgical process to obtain metal zinc powder with different particle sizes and different purposes, which belongs to the cross field of the ore grinding and metallurgy technology. The method comprises the following steps: vibrating and crushing the zinc dross, and crushing and screening by using a ball grinding mill; carrying out tertiary screening on collected dust and powder dust of each pipeline; and collecting the dust by using the dust collection equipment. The invention has the advantages that the powder dust is not discharged torealize environmental friendliness; and three kinds of metal zinc powder and two kinds of residues in a return zinc smelting process are obtained only by adopting a physical crushing method, so that the recovery rate of zinc is improved, and the highly-efficient separation and the zero discharge of valuable elements are realized. The invention solves the problem of large quantity of Cl ions generated in a zinc hydrometallurgy process and simultaneously realizes the effects that the whole process is closed together with products, the zinc content of the various zinc powder is more than or equal to 98 percent, and the total recovery rate of the zinc is 99.5-100 percent.

The invention discloses an unmanned road roller rolling system in a tunnel without a satellite signal. The unmanned road roller rolling system in the tunnel without the satellite signal is characterized in that an unmanned road roller group composed of a plurality of road rollers, a path planning system arranged on a paver, and a mobile reference station form the unmanned road roller rolling system in the tunnel without the satellite signal; lateral laser distance measuring sensors are laterally arranged at the positions of the left side and the right side in front and back of a vehicle body of each road roller in a manner of forming a 90-degree angle with a running direction separately; the sidewall of a drainage ditch in the tunnel is taken as a reference substance, distances between vehicle wheels of each road roller and the sidewall of the drainage ditch are tested through the laser distance measuring sensors arranged on the road roller to set the running track of each amplitude of the road roller; the running of each road roller is controlled through microwave communication, and operating personnel of the road roller are prevented from working under an environment of mixing emitted tail gas and a high-temperature asphalt mixture; and the advantages of effectively protecting the occupational health of the operating personnel of each road roller is realized, avoiding the harm of poisonous and harmful substances to human bodies, and ensuring the rolling quality for an asphalt road surface in the tunnel.

The invention discloses a pit breast board supporting and sealing structure and a construction method thereof. The pit breast board supporting and sealing structure comprises drilling injection piles,breast board anchoring and positioning devices and a breast board; the breast board anchoring and positioning devices are vertically fixed on a rebar cage at intervals; each breast board anchoring and positioning device comprise support brace rods, a large arc brace rod and a small arc brace rod; U-shaped grooves are fixed on two sides of the support brace rods; a steel plate sealing belt is arranged in each U-shaped groove; the breast board is provided with a body; two ends of the body are bent upwards and form bending edges; and the bending edges of the breast board are separately connectedto the steel plate sealing belts in the U-shaped grooves on the injection piles on the two sides and form a breast sealing edge jointly with the injection piles on the two sides. The earth-among-pilebreast board disclosed by the invention is convenient to assemble and disassemble and is easy to operate; the breast board can baffle soil and can also baffle water and prevent permeation; foundationpit supporting time can be shortened; on-site construction speed can be enhanced; besides, the tool-type breast board can be used repeatedly, so that cost is reduced; and the construction cost is lowered.

The invention discloses a ventilating device. The ventilating device comprises an air supply fan, an air supply pipe, an exhaust fan and an exhaust pipe. The ventilating device is characterized by further comprising an air-supply static pressure box and an exhaust static pressure box, wherein an air outlet of the air supply fan is connected with an air inlet of the air-supply static pressure box by the air supply pipe; and an air outlet of the exhaust static pressure box is connected with an air inlet of the exhaust fan by the exhaust pipe. The ventilating device disclosed by the invention has the advantages that the structure is simple, the cost is low, the industrial pollution is controlled by utilizing air jetting, the control range of pollutants is large, the capture efficiency is high, the purposes of effectively controlling industrial pollution and protecting the occupational health are achieved, and simultaneously the energy is furthest saved.

The invention provides an automatic spinning forming device for a powder liner. The automatic spinning forming device comprises a four-column hydraulic machine, a powder feeding assembly, a die assembly, a powder spinning die retreating assembly and a liner taking assembly, wherein the die assembly is mounted in the right center of a workbench of the four-column hydraulic machine, the powder spinning die retreating assembly is mounted below the die assembly and is connected with the die assembly through a connecting rod, and the powder feeding assembly and the liner taking assembly are mountedon the two sides of the workbench correspondingly. According to the automatic spinning forming device for the powder liner, when powder liner spinning forming production is conducted, the powder feeding assembly feeds raw material metal powder into the die assembly, the powder spinning die retreating assembly drives the metal powder to rotate, punch forming is conducted after powder spinning, after pressing is completed, the powder spinning die retreating assembly retreats from a die, and the liner is taken out through the liner taking assembly; and in the whole production process, automaticand continuous production of the powder liner spinning forming procedure is achieved, the production efficiency is improved, the labor intensity of personnel is greatly reduced, the safety risk is reduced, noise pollution is reduced, and occupational health of the personnel is protected.

The invention provides a tunnel excavation construction organization method based on a three-bench method. The tunnel excavation construction organization method is innovated, operation groups are arranged mixedly, the workload of each bench operation is adjusted, the construction time required by each working procedure is comprehensively considered, so that workers, operation task load and the operation time of each working procedure are matched, a construction organization mode combining a flow-line operation with a parallel operation is formed, the tunnel single excavation cycle operation time constructed by the three-bench method can be effectively shortened, and the excavation construction progress is improved.

The invention relates to a concentrated feed waste gas treatment device. The device comprises a gas collecting pipe, an air inlet pipe, a purifying device, an air outlet pipe and an exhaust opening which are arranged in sequence, wherein a booster fan and a treatment chamber are arranged on the air outlet pipe, and the booster fan is positioned above the treatment chamber; the discharge opening of the treatment chamber is provided with a solid outlet and a gas outlet, a waste collection tank is connected with the lower side of the solid outlet, and the gas outlet is connected with a dust collector; the outlet of the dust collector is connected to the air outlet pipe under the treatment chamber; a catalyzing device is arranged in the purifying device, a liquid spray tank is formed in the side of the purifying device and comprises a first spray nozzle connected with the tail end of the air inlet pipe and a second spray nozzle connected to the front end of the air outlet pipe; pressure sensors are arranged on the first and second spray nozzles; sensitive signals of the pressure sensors are conducted to a controller of the liquid spray tank; and the controller is used for controlling start and close and openness of the first and second spray nozzles.

The invention relates to the technical field of ship loader control, and discloses an automatic environment-friendly telescopic variable-amplitude ship loader control system which comprises a conveying system, an unloading system and a dust removal system. The conveying system adopts belt type conveying equipment, and a conveying speed and load fuzzy controller model is constructed by adopting a fuzzy algorithm by modeling factors influencing the system energy consumption of the belt type conveying equipment. Through cooperative use of the conveying system and the unloading system, after a conveying vehicle reaches an unloading position, unloading is started to be conducted into the unloading hopper, the unloading hopper is conveyed to a designated cabin position through the feeding mechanism, and automation of the ship loading process is achieved; in the whole unloading process and the ship loading process, field operation of operators is not needed, and the occupational health of the operators is greatly protected; meanwhile, due to automatic operation in the whole process, a large amount of labor cost is saved for a wharf operation mechanism; secondary loading and unloading on site are reduced, production efficiency is improved, loading and unloading cost is reduced, and the purposes of environmental protection, safety, energy conservation and easy operation are mainly achieved.

The invention discloses an open blowing/suction type ventilation poison-proof plate washing worktable. The worktable mainly comprises a uniform air supply device, a uniform exhaust device and a plate washing working platform. The worktable can effectively solve the technical difficulties of large-area poison dispersion and long-distance control in a plate washing room, prominently reduces the poison concentration in the plate washing room, protects occupational health of workers, realizes automatic control of the air supply device and the exhaust device, and achieves the purpose of energy conservation. The open blowing/suction type ventilation poison-proof plate washing worktable can be widely applied to plate washing operation places in the electronic industry, and is broad in application prospect.

A uniform and lower exhaust type large-area workbench mainly comprises a lower-exhaust workbench body, a purifying device, a draught fan, a frequency converter and an air pipe. The lower-exhaust workbench body is composed of a workbench shell, a porous plate work tabletop, a triangular rectification structure, a rectification narrow seam, a rectification base plate, an elbow, a reducer pipe, the air pipe, a liquid discharging pipeline, a liquid discharging valve, an automatic control device and a flip hidden handle. By the adoption of the uniform and lower exhaust type large-area workbench, the evenness of lower exhaust can be effectively improved when the large-area workbench conducts one-side exhaust, the technological problem that when the large-area workbench is used for operation, poisonous substances cannot be effectively controlled due to one-side exhaust is solved, the concentration of the poisonous substances is effectively controlled when the large-area operation workbench isused for operation; and in this way, the occupational health of workers is protected, automatic control over an exhaust device of the large-area workbench is achieved, and the energy-saving purpose is achieved.

The present invention discloses a water dispersible granule of a corn herbicide rimsulfuron and a clean production method thereof. The water dispersible granule comprises a rimsulfuron original medicine, an auxiliary agent, a carrier filler and water, wherein the content of rimsulfuron is 20-25%, and all the raw materials are commercially available commodities. The clean production method comprises three steps, namely wet-process negative-pressure mixing, negative-pressure fineness crushing and negative-pressure spray granulation. The continuous clean production method of the water dispersible granule adopts closed production in the whole process of spray drying after whole-process negative-pressure and wet-process crushing, so compared with an intermittent water-dispersible pesticide granule production line, production links are reduced, a pesticide is finer, the use efficiency of the pesticide is higher, no pesticide dust overflows, loss is greatly reduced, the production cost can be reduced, environmental pollution caused by pesticide dust and waste gas in a production process can be effectively reduced, the environmental cleanliness of a production environment is improved, the occupational health of workers can be well protected, and the utilization rate of powder can be improved.

The invention discloses a movable cement dedusting and loading device and relates to the technical field of environmental protection. The movable cement dedusting and loading device comprises a cementtransportation device, a moving device and a dedusting device, wherein the cement transportation device comprises a base, bearing brackets are arranged on the upper part of the base, driving rollersare arranged between the bearing brackets, a conveyor belt is arranged between the driving rollers, a swing device is arranged on each bearing bracket, the swing device comprises a supporting rack which is separately connected to the two bearing brackets, a first bevel gear is arranged on the lower part of a rotary shaft, a second bevel gear is engaged to the first bevel gear, a swing channel is formed in the lower part of the first bevel gear, the swing channel is located on the upper part of the conveyor belt, a slideway is aligned to the outlet of the conveyor belt, a roller is in rolling connection to a movable bracket, and the output end of a first motor is connected to the roller. The movable cement dedusting and loading device has the beneficial effects that bagged cement can fall into a carrier vehicle automatically, and the dust concentration in a field environment can be reduced.

The invention discloses a sinking type slag discharging system for an inclined shaft with rails. The system comprises a slag pool (1), a slag discharging platform (2), a pedestrian crossing trestle (3), an automatic spraying system (4), an acousto-optic alarm (5), a sewage collecting and discharging system (6) and protective railings (7), wherein the slag discharging platform (2) and the pedestrian crossing trestle (3) cross the slag pool (1); the protective railings (7) are arranged along the periphery of the slag pool (1); the automatic spraying system (4) is fixed on the protective railings(7); the acousto-optic alarm (5) is arranged at the bottom of the slag discharging platform (2); and the sewage collecting and discharging system (6) is arranged at the slope rising position of the slag pool (1). The system effectively solves the problems of environmental protection, energy conservation, emission reduction, and occupational health protection of sewage treatment and air dust reduction of a slag field at a hole of the inclined shaft with rails, as well as the problems of passing safety of workers entering and exiting the hole, safe operation of personnel and vehicles in a slagloading operation area at the bottom of the slag pool.

The invention discloses a ground-carving object pulling device. The ground-carving object pulling device includes a pulling body, and further includes a chassis, a movable supporting mechanism, and rotating mechanisms. The movable supporting mechanism includes a left supporting mechanism and a right supporting mechanism which are symmetrically arranged and of the same structure, the left supporting mechanism or the right supporting mechanism includes a supporting column, a seat bowl and a seat cup, the bottoms of the supporting columns are connected to the seat cups, the seat cups are placed in the seat bowls, and the seat bowls are fixed to the chassis. The rotating mechanisms sleeve the supporting columns. The pulling body includes a left pulling body and a right pulling body, and an inner hexagonal snap ring is disposed in the middle of each of the left pulling body and the right pulling body, wherein the inner hexagonal snap ring of the left pulling body sleeves the rotating mechanism on the supporting column of the left supporting mechanism in a clamping mode, and the inner hexagonal snap ring of the right pulling body sleeves the rotating mechanism on the supporting column ofthe right supporting mechanism in a clamping mode. The scientific and efficient pulling of a ground-carving object is achieved, the physical health of operation personnel is effectively protected, the labor cost is saved, and the efficiency of construction operation is guaranteed.

The invention discloses a hexazinone-diuron original medicine water-dispersible granule and a clean production method thereof. The hexazinone-diuron original medicine water-dispersible granule comprises a hexazinone original medicine, a diuron original medicine, an auxiliary agent, a carrier filler and water, wherein the content of hexazinone is 12-15%, the content of diuron is 40-48%, and all the raw materials are commercially available commodities. The clean production method comprises three steps, namely wet-process negative-pressure mixing, negative-pressure fineness crushing and negative-pressure spray granulation. The continuous clean production method of the water-dispersible granule adopts closed production in the whole process of spray drying after whole-process negative-pressure and wet-process crushing, so compared with an intermittent water-dispersible pesticide granule production line, production links are reduced, a pesticide is finer, the use efficiency of the pesticide is higher, no pesticide dust overflows, loss is greatly reduced, the production cost can be reduced, environmental pollution caused by pesticide dust and waste gas in a production process can be effectively reduced, the environmental cleanliness of a production environment is improved, the occupational health of workers can be well protected, and the utilization rate of powder can be improved.

The invention relates to a method for determining organic sulfur in hydrodesulfurization reaction products and mainly solves the problem existing in the prior art that inorganic sulfur after continuous hydrodesulfurization catalytic reaction needs mercury scrubbing in product analysis. The method for determining organic sulfur in hydrodesulfurization reaction products comprises the following steps of: allowing an inert gas to enter a column bottom of a stabilization tower; allowing hydrodesulfurization reaction products to enter the stabilization tower from a retention section and a central section and to be heated in the column bottom of the stabilization tower, allowing heavy components in the reaction products to flow to the column bottom, allowing a gas mixture I obtained after mixing light components and the inert gas to pass through a rectifying section and flow to a reflux section; cooling the gas mixture I to reflux at the temperature which guarantees that the light components are all condensed into liquids, sending the cooled light components to the column bottom, and discharging the inert gas and a hydrogen sulfide gas from a non-condensable gas outlet of the reflux section; removing hydrogen sulfide hydrodesulfurization products, and determining organic sulfur by a sulfur determinator. By the adoption of the technical scheme, the above technical problem can be well solved. The method provided by the invention can be used in industrial application of hydrogen sulfide removal of catalytic desulfurhydrogenation reaction products.