89results about How to "Improve working environment conditions" patented technology

The invention provides a derricking direction-changeable telescopic belt conveying bidirectional loader-unloader and relates to the field of logistics transportation cargo loading and unloading mechanical equipment. The derricking direction-changeable telescopic belt conveying bidirectional loader-unloader comprises a vehicle having bearing and walking functions, a telescopic cross arm having lifting, telescoping and swinging functions, a middle transition conveyor which has a swinging function and is capable of inclined conveying, a first belt conveyor and a second belt conveyor having derricking, swinging and telescoping functions, a metering device having metering, displaying, storing and printing functions, and an operating control system used for complete machine operation of the loader-unloader. The derricking direction-changeable telescopic belt conveying bidirectional loader-unloader has the advantages of simple structure, reliable work, convenient and rapid movement and transfer, and wide operating scope; the derricking direction-changeable telescopic belt conveying bidirectional loader-unloader can reduce manually-assisted carrying, reduce workload, shorten operating time, increase loading and unloading working efficiency, reduce the cost of loading and unloading carrying, improve working environment and work conditions, guarantee economical, rapid, convenient and safe loading and unloading and transportation, allow change of the direction of logistics conveying, and realize forward and reverse loading and unloading, automatic metering statistical analysis, and loading and unloading quantity/weight recording, displaying and storing.

The invention provides waterborne single-component thermoplastic plastic paint and a production method and construction method thereof. The plastic paint is suitable for the coating of plastic cabinet prepared from ABS (Acrylonitrile Butadiene Styrene), PS (poly styrene), HIPS (High Impact Polystyrene), PC (polycarbonate), PMMA (polymethyl methacrylate) and the like, has good adaptability to the surface of the material and also has good adhesive force, thus the adhesive force problem of the waterborne paint on the plastic substrate can be solved. A waterborne system is adopted for the paint mainly adopts, the production and using processes are safe; and water is used as diluent, and the paint has the advantages of low toxicity, low pollution, extremely low volatile organic compound (VOC) emission and the like and meets various laws and regulations on environmental protection. Meanwhile, the paint can use different color pastes for coloring; and the paint has better decorative propertyon the substrate while the properties can not be affected. Compared with the common solvent thermoplastic acrylic paint, the paint only uses a small amount of low-toxicity alcohol ether type organic solvent, thus the influence on the plastic substrate is extremely small; and the paint film has bright colour, full appearance effect and good performances.

The invention discloses a process for casting heat-resistant steel or wear-resistant alloy steel by evaporative pattern casting (EPC). The process comprises the following steps of: purchasing raw materials, blending the materials, performing steelmaking, manufacturing a pattern, preparing a coating, brushing the coating, drying, pouring, testing, thermally processing, polishing, and packaging and warehousing. The invention further provides ingredients of the raw materials. The ingredients respectively are 0.3-0.8% of copper, 0.1-0.3% of molybdenum and 0.2-0.5% of chromium; molybdenum is added together with waste steel in a melting process; and copper is added together with molten iron into ladles in a tapping process. The invention also provides a preparation method of the coating. The coating comprises the following components in percentages by weight: 50-80% of fireproof material, 0.5-4% of adhesive, 1-3% of suspending agent, 0.5-3% of sodium dihydrogen phosphate and the balance of water, wherein the fireproof material is composed of bauxite, alundum powder, graphite powder or mullite powder. By adopting the method disclosed by the invention, effects of low cost, short processing period and good quality are achieved, the process of the method is reasonable, and the preparation effects of the raw materials and the coating are good, so the method is applicable to mass production and large-scale production.

The invention discloses a telescopic belt conveyor changeable in amplitude and direction, and relates to the field of logistics transportation cargo handling mechanical equipment. The telescopic belt conveyor is composed of a three-section two-stage telescopic belt conveyor body with a telescopic function, an amplitude change mechanism with tilting and amplitude change functions, and a swing rotating mechanism with swing rotating and direction change functions. According to the telescopic belt conveyor changeable in amplitude and direction, a sleeved telescopic machine frame structure is adopted, and the elongation and shortening function, the tilting and amplitude change functions and the swing rotating and direction change functions of the belt conveyor are added by additionally arranging the amplitude change mechanism and the swing rotating mechanism; the conveying range is widened, along with conducting of the loading, unloading and conveying processes, under the condition that loading and unloading places of materials are changed, the conveying distance, height and direction are adjusted by driving and controlling a telescopic mechanism, the amplitude change mechanism and a direction change mechanism, and thus, the telescopic belt conveyor can adapt to change of the loading and unloading places; cargoes are directly delivered to the destination through only one time of loading and unloading, manual auxiliary carrying is reduced, the labor intensity is relieved, the operation time is shortened, the loading and unloading efficiency is improved, and the loading and unloading carrying cost is reduced; and the working environment and the labor condition are effectively improved, and the effect that loading and unloading transport is economical, rapid, convenient and safe is ensured.

The invention discloses a telescopic belt conveying two-way loading/unloading machine, and relates to the field of logistics transportation goods loading/unloading mechanical equipment. The telescopic belt conveying two-way loading/unloading machine consists of a vehicle with bearing and walking functions, a rotating arm with a swing rotating function, a middle transition conveyor capable of aslant conveying, a belt conveyor 1 with amplitude change, swing rotating and extension functions, a belt conveyor 2, a metering device with metering, displaying, storage and printing functions, and an operation control system for operating the whole loading/unloading machine. The telescopic belt conveying two-way loading/unloading machine is simple in structure, reliable in work, convenient and fast in movement and transfer and wide in operation range, can reduce manual auxiliary carrying, relieves the labor intensity, shortens the operation time, improves the loading/unloading efficiency, reduces the loading/unloading carrying cost, improves the working environment and labor conditions, guarantees economical, fast, convenient and safe loading/unloading transportation, can change the logistics conveying direction, realizes forward/reverse two-way loading/unloading, and can automatically meter, count and record the loading/unloading number and weight for displaying and storage.

The invention discloses a centrifugal casting system for an internal combustion engine air cylinder sleeve. The centrifugal casting system comprises a centrifugal machine, a pouring device, a spraying device, a pipe drawing device and a cleaning device. The centrifugal machine comprises a mould barrel for molding the air cylinder sleeve, end covers arranged at the two ends of the mould barrel, a power device and a transmission device connected with the power device. The transmission device comprises a hollow rotary shaft, the mould barrel is coaxially sleeved with the hollow rotary shaft, the hollow rotary shaft is supported on a bearing pedestal through a bearing, the power device drives the hollow rotary shaft to rotate, and therefore the mould barrel is driven to rotate. Compared with the prior art, the centrifugal casting system has the beneficial effects that the mould barrel is circumferentially restrained on the hollow rotary shaft, throbbing of centrifugal movement of the mould barrel is reduced, the rotating precision of the mould barrel is improved, and the quality and casting efficiency of a casting are improved; and when the mould barrel rotates at a high speed, weight blocks are subjected to the action of centrifugal force to move outwards, and therefore the end covers are locked through moving rods, and molten metal is prevented from being splashed.

The invention relates to a method for drying and sterilizing Panax notoginseng, which comprises the following steps of: (1) sorting Panax notoginseng raw material, washing, and draining; (2) turning on a microwave drying and sterilizing machine, laying the Panax notoginseng raw material on the conveyer belt of the microwave drying and sterilizing machine from the beginning end of the machine, controlling the laying thickness not more than 30 mm, conveying the Panax notoginseng raw material to a hermetic microwave radiation zone positioned in the middle section of the machine via the conveyer belt, and conducting drying and sterilizing, wherein the material feeding port is arranged in a common operation zone and the conveying speed of the conveyer belt is 0.3-5 m/min; and (3) conveying the dried and sterilized Panax notoginseng raw material out of the machine from the tail end arranged in a clean operation zone of the machine via the conveyer belt, collecting, bagging, and packaging. The inventive method adopts microwave drying and sterilization; and has the advantages of high heating speed, uniform heating, low drying temperature (lower than 80 DEG C), short drying time, and effectively saved energy consumption (by over 2/3).

The invention provides a rapid ventilation and smoke exhausting device for a construction period of a long-distance tunnel. The rapid ventilation and smoke exhausting device comprises a gantry bracket, a fixed wind door and a movable wind door, an axial flow ventilator and a jet flow draught fan, and a motor control system, wherein the fixed wind door is arranged at the upper end of the gantry bracket and the movable wind door is arranged on one side of the gantry bracket; the axial flow ventilator and the jet flow draught fan penetrate through the fixed wind door; the fixed wind door is matched with the unfolded movable wind door so that the axial wind flow in the tunnel is separated; a wind inlet of the axial flow ventilator and a wind outlet of the jet flow draught fan are formed in one side, which is close to a working surface, of the fixed wind door; the wind outlet of the axial flow ventilator is connected with a flexible wind barrel; the wind outlet of the flexible wind barrel extends to the outer part of the tunnel. According to a ventilation and smoke exhausting method provided by the invention, the wind doors for separating the axial wind flow are arranged in the tunnel; a safe space and a closed polluted space are formed on the two sides of the wind doors respectively, and pollutants in the polluted space can be discharged out of a hole along an airflow through a closed exhausting channel by using ventilation equipment; blasting equipment is used for blasting wind into the polluted space from the safe space so that the pollutants rapidly flows towards the inlet of the ventilation equipment.

The invention provides a novel belt type vibratory rolling filtering device. The novel belt type vibratory rolling filtering device comprises belt type vibratory rolling filtering machines which are oppositely arranged, wherein each filtering machine comprises a rack; the rack comprises an upper supporting frame and a lower supporting frame; a layering distribution device is arranged at the upstream end of the upper supporting frame; in the material flowing direction, the rack is provided with a guiding roll, a vibrating part, a driving rolling part and a tensioning roll in sequence; a ring-shaped filtering belt is arranged around the guiding roll, the vibrating part, the driving rolling part and the tensioning roll; the left driving rolling part comprises a first extruding and dewateringroller positioned on the upper supporting frame and a second driving electric roller positioned on the lower supporting frame; the right driving rolling part comprises a second extruding and dewatering roller positioned on the lower supporting frame and a first driving electric roller positioned on the upper supporting frame; extruding gaps are respectively formed between the first extruding and dewatering roller and the first driving electric roller, between the two filtering belts surrounding the left driving rolling part and the right driving rolling part and between the second extruding and dewatering roller and the second driving electric roller. The novel belt type vibratory rolling filtering device provided by the invention has the advantages that the liquid content of filter cakesis low and the productivity is improved.

The invention relates to the technical field of chemical paint, in particular to a waterborne plastic paint and a preparing method and use method thereof. The waterborne plastic paint comprises, by weight, 40-80 parts of a modified acrylic resin emulsion, 4-8 parts of a water-soluble dispersant, 1-3 parts of a waterborne thickening agent, 0.6-1.0 part of a waterborne defoaming agent, 0.3-0.7 partof a waterborne flatting agent, 0.3-0.7 part of a waterborne wetting agent, 0.2-0.4 part of a waterborne antirust agent, 0.4-0.8 part of a multifunctional additive, 1-5 parts of other additives, 10-30parts of pigment powder and 40-80 parts of deionized water. The waterborne plastic paint solves the problems that waterborne paint has insufficient adhesive force on a plastic substrate and thermal-cured finish paint matched with waterborne paint has too many shrinkage holes; the waterborne plastic paint is high in adhesive force and extremely good in leveling property, and a paint film is outstanding in water resistance, high temperature resistance, temperature impact resistance and other performance.

The invention relates to molybdenum wire production continuous rolling and continuous forging cogging equipment, which comprises a heating furnace, a rolling machine, a first rotary forcing unit, a butt-welding machine and a second rotary forging unit arranged in sequence. The invention further relates to a method for producing a molybdenum wire with the equipment. By adopting a continuous rolling and continuous forcing process in which the advantages of cogging of the rolling machine and a plurality of rotary fogging machines are combined, the investment cost is greatly reduced, production efficiency is increased, consumption is lowered, and yield is increased. Meanwhile, the automatic control degree is high, noise is small, a good dust collecting effect is achieved, working environment conditions can meet relevant industrial sanitation and environment requirement standards, and the product quality can reach the world advanced level.

The invention provides an air source heat pump and a heat supply system. The air source heat pump comprises a shell and an evaporator fixed in the shell, wherein the shell is fixedly provided with a refrigerant outlet and a refrigerant inlet. The air source heat pump is characterized by also comprising a refrigerant radiating device used for optimizing the external working environment condition and temperature of the evaporator by utilizing afterheat of the refrigerant subjected to heat exchanged and flowing back to the air source heat pump, wherein the refrigerant radiating device is positioned on one side of the evaporator and is provided with a refrigerant input port and a refrigerant output port; and the refrigerant output port is communicated with the refrigerant inlet. The refrigerant radiating device arranged on one side of the evaporator is used to heat external air close to the evaporator by utilizing the afterheat of the refrigerant flowing back to the air source heat pump so as to optimize the working environment condition and temperature of the evaporator and the air source heat pump and realize and improve the heating efficiency of the air source heat pump.

The invention provides an experimental device which uses semiconductor refrigeration, comprising a box body (1), which is internally provided with an experimental cabin which is enclosed by a wall plate (2) and a bottom plate (5) of the experimental cabin, and a semiconductor refrigerator (7), which is arranged below the bottom plate (8) of the experimental cabin. The errors of temperatures of a whole machine are controlled within 0.5 DEG C, which improves the experimental accuracy. On the other hand, the experimental device produces lower noise when working and improves the working environments. The experimental device also has the advantages of low energy consumption and convenient use and operation.

The invention discloses an external dredging machine for a bin, which comprises a hydraulic cylinder and a dredging harrow, wherein the hydraulic cylinder is vertically arranged outside the bin, the dredging harrow is vertically arranged inside the bin, and a piston rod of the hydraulic cylinder is in driving connection with the dredging harrow by a driver. The hydraulic cylinder is arranged outside the bin, so that the external dredging machine not only is better in work environment condition, and but also is easy to maintain, overhaul and change. The driver adopts the principle of a lever, so that the dredging harrow is easy to move up and down for dredging.

The invention relates to a waterborne epoxy self-leveling anti-scratch floor paint and a preparation process thereof. The waterborne epoxy self-leveling anti-scratch floor paint is characterized by being prepared from a component A and a component B, wherein the component A comprises, by mass, 80 parts of waterborne epoxy resin and 20 parts of an active diluent; and the component B comprises, by mass, 20-25 parts of a waterborne epoxy curing agent, 22-33 parts of deionized water, 0.2-0.6 part of a wetting and dispersing agent RS610, 0.3-0.5 part of a defoaming agent DF681F, 0.5-1 part of an anti-scratch aid, 0.2-0.4 part of an alkali swelling thickener A401, 4-6 parts of titanium dioxide, 2-3 parts of phthalocyanine blue BGS, 1-1.5 parts of strontium chrome yellow 801, 10-15 parts of lightcalcium carbonate, 20-25 parts of precipitated barium sulfate, 2-3 parts of an anti-scratch agent and 10-15 parts of ultrafine talcum powder. The paint provided by the invention utilizes water as a dispersion medium, does not contain volatile organic solvents such as toluene and xylene, saves a lot of resources, eliminates the possibility of fire hazards during construction, reduces pollution tothe atmosphere, and enhances working environment conditions. A coating formed by the paint has good adhesion; and a paint film formed by the paint has greatly improved scratch resistance and good adhesion to most substrates.

The invention discloses a water-soluble degradable quenching agent which consists of the following raw materials, by weight: 2-6 parts of alcohol, 4-8 parts of rhamnolipid, 6-10 parts of citric acid, 2-4 parts of butyl hydroxy anisole, 8-12 parts of rapeseed oil, 11-17 parts of cyclodextrin, 6-10 parts of pine oil, 15-25 parts of acrylic acid, 7-8 parts of saccharose, 0.5-0.8 part of 2-thioketone-trihydroxymethyl benzothiazoline and 10-20 parts of shell powder. A preparation method for the water-soluble degradable quenching agent comprises the following steps of: firstly, dissolving citric acid, butyl hydroxy anisole and pine oil into alcohol to obtain a mixed solution; then, adding water into the mixed solution and transferring the mixed solution into a reaction kettle, cooling the mixed solution and adding rhamnolipid, rapeseed oil, cyclodextrin and saccharose into the mixed solution after reaction is ended, stirring for 10 minutes and standing to obtain a mixture; centrifuging the mixture, taking liquid supernatant after the mixture is centrifuged, adding acrylic acid, 2-thioketone-trihydroxymethyl benzothiazoline and shell powder into the mixture, uniformly stirring, heating, preserving the temperature, cooling, and sealing by use of paraffin oil, and thereby obtaining the water-soluble degradable quenching agent. The prepared quenching agent has relatively good water solubility, is ecologically degradable, and is small in environmental pollution.

The invention discloses a device capable of converting sea wave energy into rotation of a shaft for driving a power generator to generate power. The device is characterized in that four racks are driven by an ark through the pushing of sea waves to move up and down in a reciprocating mode under the guidance of guide piles, teeth are formed on both sides of each rack, and each rack drives two ratchet wheels at the same time to drive the rotary shaft alternately, so that reciprocating movement is converted into rotation of the shaft, and the power generator is driven to generate power. According to the core technology of the device, the reciprocating movement of the ark can still be converted into the rotation of the shaft reliably under the condition that the travel distance of the ark changes variously. The four racks are symmetrically distributed at the four corners of the ark, and thus the kinetic energy of the sea waves can be captured to the maximum extent. The device is a single unit, a countless number of the units are connected in parallel to be integrated into a big regular sea wave power generation base, and thus clean, cheap and high-power or ultrahigh-power electric energy can be provided for the State Grid Corporation of China.

The water fog cleaner for scribing machine capable of clearing away water fog and mist produced during the machining includes a casing, a cover plate, an air inlet joint and an air outlet joint. It features the front and the back filtering nets assembled separately before the air inlet joint and the air outlet joint, the axial flow blower before the front and the back filtering nets, the water fog condensing plate between the front filtering net and the axial flow blower, and the lower filtering net on the condensed water hole communicated with the deposition chamber. The present invention has the advantages of compact structure, small size, convenient use, low manufacture and maintenance cost, reduced water fog harm and environment friendship.

The invention provides a method for sealing aluminium cell anode rods. The method is characterized in that a device capable of producing negative pressure is installed around each rod; and the flue gas originally overflowing through the clearance between the rods and a housing plate is reversely absorbed into a flue of an aluminum cell. The invention also correspondingly provides an anode rod sealing device specially designed for executing the method. The sealing device comprises side plates, a front end plate and a top plate and is characterized in that the sealing device consists of two side plates, the top plate and the front end plate and is a cavity device surrounding the anode rods from three faces; wherein (1) a grid structure is adopted on the front end of the device enclosing the anode rods from three faces; (2) the tail part of the device is welded with a plate-web girder and is communicated with a horizontal flue; and (3) the device is arranged on a horizontal housing plate and takes the horizontal housing plate as the bottom plate of the device. The sealing device can greatly reduce the leaked flue gas, thereby improving the working environment of an electrolysis shop, and creating good social and economic benefits.