30results about How to "Reduce the incidence of occupational diseases" patented technology

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 relates to a lifting type police stand capable of multi-directionally sheltering from rain. The lifting type police stand capable of multi-directionally sheltering from rain comprises abase and a snap joint plate, wherein a sliding rod is connected in the base, the base is fixedly connected with the sliding rod, the middle of the sliding rod is provided with a sliding groove, the sliding rod is tightly attached to the sliding groove, the middle of the sliding groove is provided with a snap joint hole, the snap joint plate is installed at the top of the sliding groove, a base plate is fixed to the inner side of the sliding rod, the left side and the right side of the inside of the base plate are provided with supports, the supports are fixedly connected with the base plate, and the inner sides of the tops of the supports are connected with standing plates. The lifting type police stand has the advantages that the snap joint plate can be bilaterally adjusted through left-right sliding between the sliding rod and the base plate in the sliding groove, the left-right movement of a guidance protection device on the snap joint plate can be adjusted, accordingly position adjustment can be executed according to sunlight irritation angles, the degree of damage to the high temperature in summer can be reduced, and direct sunlight irradiation can be avoided by left-right movement.

The invention relates to an automatic dust collector applied to a toilet-roll rewinder. The automatic dust collector comprises a sealing chamber for containing the toilet-roll rewinder and a ventilating pipeline communicated with the sealing chamber; the other end of the ventilating pipeline is sequentially provided with a cloth bag dust collector, an exhaust fan and an exhaust box; the cloth bag dust collector comprises a dust removing chamber and a dust removing bag arranged inside the dust removing chamber; one end of the dust removing bag is sealed, and the other end is communicated with an air inlet of the exhaust fan, and an air outlet of the exhaust fan is communicated with the exhaust box. The impurities such as paper dust in the air are effectively filtered by the cloth bag dust collector; the air quality of a workshop and a working environment of the staff are improved; the probability of an industrial disease caused by dust paper is reduced; a scanning vacancy is preserved below the cloth bag dust collector; an intermittent shock of the compressed air on the dust removing bag is combined; the dust paper can be intensively cleaned; the daily cleaning time of the staff is reduced; the labor intensity is reduced, and the production efficiency 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 discloses a preparation process of high-strength wear-resistant concrete. The concrete is prepared from the following components in parts by weight: 300 to 400 parts of Portland cement,500 to 900 parts of fine aggregate, 950 to 1250 parts of coarse aggregate, 180 to 190 parts of water, 20 to 40 parts of silica powder, 50 to 80 parts of epoxy resin, 5 to 12 parts of steel fiber, 1 to4 parts of a water reducing agent, 6 to 12 parts of an accelerator, 0.15 to 0.6 part of an air entraining agent and 40 to 65 parts of metakaolin. The structure of the concrete is scientific and reasonable; the preparation method is safe and convenient to use; and the prepared concrete is high in strength and not prone to damage during heavy pressing and collision, the overall strength of the prepared concrete during use is improved, the wear resistance of the concrete is improved, and the setting rate of the concrete is increased, so the market competitiveness of the prepared concrete is improved.

The invention discloses an automatic magnesium chloride discharging and waste gas collecting device for titanium sponge production and a production process thereof. According to the device, an electromagnetic valve and a water ring vacuum pump are arranged on a waste gas conveying pipe; a waste gas collecting device is arranged on one end of the waste gas conveying pipe; the outlet end of a magnesium chloride pipe on a reactor is connected with a magnesium chloride conveying pipe through a magnesium chloride conveying branch pipe; a high-temperature valve is arranged on the magnesium chlorideconveying branch pipe; and a baffle is arranged at the bottom of the magnesium chloride conveying pipe. The discharge time of magnesium chloride is determined according to the amount of titanium tetrachloride, when the magnesium chloride needs to be discharged by calculating, the water ring vacuum pump is started five minutes earlier, the high-temperature valve and a pressure charging valve are opened, argon is charged into the reactor for ten minutes, liquid magnesium chloride and flue gas flow into the magnesium chloride conveying pipe under the action of high pressure, the magnesium chloride flows into an electrolytic tank, and the flue gas is pumped into the waste gas collecting device. The magnesium chloride can be automatically discharged during reduction, centralized transportationand waste gas collection are achieved, power consumption is saved, cost is reduced, and labor environment is improved.

The invention relates to a manufacturing method of an aluminum nonstick pan, which is also a novel manufacturing technology for the aluminum nonstick pan. The novel manufacturing technology of the aluminum nonstick pan includes the following processes: stretching and moulding, polishing and painting, stereotyping and assembling. The process is characterized in that the first is the polishing and painting, the second is the stereotyping and assembling and the last is the stereotyping and assembling. The polishing and painting is both convenient and economic. The present two procedures of smearing lubricating oil and cleaning lubricating oil are omitted. A rolling machine is used for coating liquid paint inside and outside to improve the utilization rate of paint, so resources and labors are saved, and the equipment investment and the production cost are lowered greatly. The pollutions to the operation environment and the natural environment are small. Injuries to operators are lowered greatly. And the natural environment is protected.

The invention belongs to the field of tunnel construction, and discloses an energy-saving ventilation method based on an existing railway tunnel and an inclined shaft for newly-built tunnel construction. The energy-saving ventilation method comprises the following steps that a blocking wall and a fan are arranged at the downstream of a divergence of the existing inclined shaft and a newly-built adit, the fan is used for extracting fresh air in the inclined shaft in an unused section, and the fresh air supplied to tunnel face construction of a newly-built tunnel; under the action of the fresh air, dirty air is exhausted out of the tunnel along the newly-built tunnel and the existing inclined shaft; in order to increase the dirty air exhaust speed, jet fans are arranged in a utilization section of the inclined shaft at intervals of 200-300 m, and dirty air exhaust is accelerated. and meanwhile, a multi-stage spraying dust falling curtain is arranged in an air return inclined shaft, so that pollutants such as solid particles in the air are reduced, and the ventilation effect is improved. According to the method, the ventilation air supply length can be reduced, and the ventilating fanpower is reduced, so that energy consumption is reduced.

The invention relates to the technical field of sand blasting processes, in particular to a combined type particle recycling device. The combined type particle recycling device comprises particle and powder conveying devices, a particle collecting device, a conveying pipeline, a sand-dust separator, a sand blasting tank, a spray gun, a dust suction pipe, a dust remover, a dust removal pipe, a centrifugal fan and a discharge pipe. The particle and powder conveying devices are arranged on the two sides of the particle collecting device correspondingly and can move towards the particle collecting device under driving of a driving device. The particle collecting device is connected to the conveying pipeline. The conveying pipeline is connected to the sand-dust separator. The sand-dust separator is connected to the sand blasting tank and the dust suction pipe. The sand blasting tank is connected to the spray gun. The dust suction pipe is connected to the dust remover. The dust remover is connected to the dust removal pipe. The dust removal pipe is connected to the centrifugal fan. The centrifugal fan is connected to the discharge pipe. The equipment foundation investment cost can be reduced, furthermore, the failure rate can be reduced, the shutdown maintenance time is shortened, and the equipment operation energy consumption is reduced.

The invention discloses a heat insulating door and window capable of preventing aging and fading. The heat insulating door and window comprise a mounting window frame. An overturning window frame is rotationally mounted at one end of the mounting window frame, double-layer glass is pasted on the inner side of the overturning window frame, and sealing adhesive tape is pasted at the joint of the double-layer glass and the overturning window frame. The heat insulating door and window are scientific and reasonable in structure and safe and convenient to use, through the arrangement of a cleaning groove, a cleaning plate, a connecting wire, a reset spring, a movable groove, a movable plate and a push handle, the inner wall of the bottom end of the mounting window frame can be cleaned, the cleaning difficulty of the inner wall of the bottom end of the mounting window frame is reduced, and the danger generated when the mounting window frame is cleaned is reduced; and through the arrangement of rotary connecting seats, sun-shading baffles, L-shaped grooves, conduction wires and an adjusting handle, the double-layer glass can be shielded through the sun-shading baffles, the double-layer glass is subjected to sun-shading protection, aging and fading of the double-layer glass during use are reduced, temperature rise caused by illumination can be reduced, and the heat insulating effect when the heat insulating door and window are used is improved.

The invention discloses a control system of mineral metering production equipment. The control system of the mineral metering production equipment comprises a CPU (central processing unit), a power module, a switch, a touch screen, a first extended module, a second extended module, a frequency converter, an instrument and a communication module, wherein the CPU is connected with the power module,the switch, the touch screen, the first extended module, the second extended module, the frequency converter, the instrument and the communication module; the frequency converter is connected with anelectric motor and an electric motor fan; the instrument is connected with a weighing sensor, the weighing sensor has a weighing function, and current signals of the weighing sensor are subjected to standardized processing by a transmitter, received by the instrument and converted into digital signals through A/D conversion to be displayed. The control system has following advantages: with adoption of a flat pipe chain, an annular pipe chain and a vertical pipe chain, the dust pollution can be effectively prevented, the ecological environment and health of operation staff are protected, and the incidence rate of occupational diseases is reduced.

The invention provides a method for comprehensive treatment, recovery and reuse of cutting fluid, wherein the method includes two independent circulating operation treatment paths of S1 and S2: S1, pumping the cutting fluid into a jet device from a liquid tank, injecting ozone into the jet device, introducing the gas-liquid mixture of the cutting fluid and ozone into a static mixer, promoting mixing, then introducing the gas-liquid mixture into a back channel reaction bin to promote ozone to disinfect and sterilize the cutting fluid, then carrying out multistage filtration of the gas-liquid mixture and allowing the product to return to the liquid tank; and S2, pumping the cutting fluid into an oil-water separation device from the same liquid tank, separating to obtain oil dirt and a clearliquid, and allowing the clear liquid to return the liquid tank. The recovery and reuse of the cutting fluid can be realized.

The invention discloses an office chair driven and controlled by a computer and having adjustable comfort degree. A computer usage monitoring unit is connected to a driving control adjustment system through a data information monitoring and signal driving module; a body status monitoring unit is connected to the driving control adjustment system through a monitoring and sensing and data/signal conversion and transmission module; the driving control adjustment system is connected to an office chair adjustment and control unit through a data information analysis and signal transmission control module; a body comfort degree feedback unit is connected to the driving control adjustment system through a signal driving and signal transmission and conversion module. The office chair can be subjected to driving adjustment control so as to adjust the power of massage apparatuses arranged on different positions, so that massage in corresponding intensity can be carried out for alleviating fatigue in different degrees when an officer is suffered from work fatigue. By means of monitoring and sensing to usage status of a computer and body status, the office chair has excellent massage effect.

A mobile fixed-point labor-saving device for locking a screw machine, comprising an assembly line frame body (1), and a lifting connecting column (2) is arranged on the opposite side of the frame body (1) to a positioning structure through a rocker arm device (3) and a positioning structure including a long Shaped frame (4), horizontal and vertical moving shallow rails (5), connecting rods (6), electric pressing device (7), operating lever (8) is located on the side of the frame, and the lock screw machine head is fixed when in use After adjusting the corresponding height and inclination in the clamping device (9), the operator only needs to pull the handle lever to implement fixed-point locking; the side of the elongated frame (4) is equipped with a prompt device (10), and the prompt information is sound or LED Lighting display; it adopts a connective structure design, which is used for stable positioning of simple screw locking machines, and can be flexibly adjusted according to the position of screw holes. It is easy to operate, saves labor and time, and reduces the incidence of occupational diseases.