8results about How to "Reduce the risk of poisoning" patented technology

The utility model relates to the technical field of filtering and cleaning of chemical equipment, in particular to an ammonia water pump inlet filter cleaning device which comprises an ammonia water pump body, an inlet pipe is installed at the water inlet end of the ammonia water pump body, the water outlet end of the ammonia water pump body is communicated with an outlet pipe, and a filter is installed on the inlet pipe. The inlet pipe is communicated with a desalted water pipe, the outlet pipe is communicated with a return pipe, a circulating pipe is communicated between the desalted water pipe and the return pipe, a circulating pump is arranged in the middle of the circulating pipe, a liquid storage tank is arranged on one side of the circulating pump, and the liquid storage tank is communicated with the circulating pipe through a liquid conveying pipe. Desalted water circulating flushing is adopted to replace traditional direct liquid discharging, residual ammonia water in the filter and the ammonia water pump body is removed, the poisoning risk caused by volatilization of high-concentration ammonia water is reduced, the situation that GDS alarm is triggered and desalted water circulating flow washes impurities and crystals attached to the surface of a filter screen of the filter is reduced, the service life of the filter is prolonged, and the service life of the filter is prolonged. And the use and production cost is reduced.

This invention discloses a hot melt adhesive for high-temperature protective clothing and its preparation method, comprising the following raw materials: Fischer-Tropsch wax, styrene-isoprene-styrene block copolymer with 0% diblock content, styrene-isoprene-styrene block copolymer with 20-30% diblock content, styrene-isoprene-styrene block copolymer with 40-50% diblock content, rosin resin, petroleum resin, ethylene-vinyl acetate copolymer, and antioxidant. This hot melt adhesive requires no toxic solvents, possesses both heat resistance and water resistance, and is suitable for high-temperature protective clothing. The preparation method of this hot melt adhesive involves heating and mixing polymer materials without adding any solvents or toxic substances during the preparation process, reducing the risk of toluene poisoning, completely solving the problems of solvent evaporation and recovery, and, more importantly, eliminating safety hazards in the storage and use of organic chemicals, achieving environmentally friendly, safe, and efficient production.

The utility model relates to a portable sulfuryl fluoride gas quantitative control device which comprises a machine case shell, an alarm is fixedly installed on the left side of the front face of the machine case shell, a ventilation hole is formed in the middle of the front face of the machine case shell, and a battery bin is fixed to the top of the right side of the front face of the machine case shell. An air inlet connector is fixed to the center of the left side of the case shell, an air outlet connector is fixed to the center of the right side of the case shell, and four movable pulleys are fixed to the bottom face of the case shell. By arranging the movable pulleys, the device can be conveniently pushed to move, the practicability is improved, meanwhile, the device is controlled through the controller to achieve the automatic quantification process, final data are displayed through the display screen, manual guarding is not needed, the poisoning risk is reduced, safety is higher, and meanwhile efficiency is higher; after dosing is completed, residual gas in a system pipeline can be discharged to a feeding point or a safe collecting device through the fan.

This utility model relates to the field of agricultural production technology and discloses a mechanized spraying device for agricultural production. It includes a support platform, a self-driving component mounted on the top of the support platform, a traveling plate fixed to the drive end of the self-driving component, and a pesticide cartridge fixed to the top of the traveling plate via a support column. A liquid pump is mounted on the top of the traveling plate and below the pesticide cartridge. The discharge end of the liquid pump is fixedly connected to the inlet end of a flow equalization chamber. Spraying components are detachably installed at the outlets at both ends of the flow equalization chamber. This mechanized spraying device for agricultural production drives the pesticide cartridge and nozzle to travel along the crop rows via the self-driving component, spraying the pesticide solution onto each row of crops. It achieves automated spraying of large areas of greenhouses without manual operation. Simultaneously, the uniform forward spraying effectively improves the uniformity and comprehensiveness of spraying, ensuring the control effect. Furthermore, it achieves separation of personnel and pesticides, avoiding direct contact between personnel and pesticides.

The invention relates to a compressed air purification distributor device for human respiration. Inlet airflow is introduced into an air inlet quick connector; the catalyst converter is connected with the air inlet quick connector, a mixture of copper oxide and manganese oxide is placed in the catalyst converter, and carbon monoxide in inlet air flow is converted into carbon dioxide; the heater is arranged on the catalyst converter and is used for heating the mixture; the filter is arranged at the downstream of the catalyst converter and is used for filtering particles in the airflow; the sensing system is arranged at the downstream of the filter, is in communication connection with the heater and is used for detecting the carbon monoxide concentration of airflow and adjusting the heating power of the heater; the output end is connected to the downstream of the sensing system and comprises a plurality of air outlet connectors, the air outlet connectors are connected with different breathing devices respectively, and the airflow is divided into multiple parts to be conveyed into the breathing devices. The catalyst converter is arranged to convert carbon monoxide into carbon dioxide, meanwhile, the sensing system is arranged to monitor and remind workers to leave all the time, the carbon monoxide poisoning risk is reduced, and safety is improved.

This application relates to the field of platinum catalysts and discloses a preparation process for an anti-poisoning platinum catalyst, comprising the following steps: adding chloroplatinic acid and sodium tetrachloropalladate to ethanol, adding carbonate, stirring evenly, adding an organosilicon vinyl dual-capping agent, and heating to react to obtain a platinum / palladium complex; washing the precipitate with water, extracting, drying and filtering, and purifying by rotary evaporation to obtain a purified platinum / palladium complex; adding an organosiloxane complex to obtain a diluted platinum / palladium complex; adding terminal ethylene silicone oil, hydrogen-containing silicone oil, and a polymerization inhibitor, stirring, vacuum degassing, and freezing to obtain an anti-poisoning platinum catalyst; the organosiloxane complex in step S4 is composed of dimethyl silicone oil and dodecylpentasiloxane in a weight ratio of 1:(0.5-1). The anti-poisoning platinum catalyst of this application is applicable to the preparation of special modified polysiloxanes containing sulfur, phosphorus, and other elements, high-performance silicone rubber, and special silicone oils. It exhibits good stability, is not prone to catalyst poisoning, and has high catalytic efficiency.

This utility model discloses a closed-loop replacement device for an ammonia unloading compressor, including an ammonia unloading compressor. An ammonia discharge valve is connected to the top of the compressor. A nitrogen pipeline connected to the ammonia discharge valve is used for purging with nitrogen. An ammonia flare discharge pipeline connected to the ammonia discharge valve is used to transport gaseous ammonia and replacement nitrogen to the ammonia flare discharge system for combustion. This closed-loop replacement device for the ammonia unloading compressor, equipped with the ammonia discharge valve and flare discharge pipeline, allows for closed-loop replacement of the ammonia unloading compressor. First, the valve on the flare discharge pipeline is opened, and the valve on the nitrogen pipeline is closed. The gaseous ammonia inside the compressor is then discharged to the ammonia flare system through the ammonia discharge valve, achieving a closed and safe discharge of gaseous ammonia and replacement nitrogen. This ensures the closed-loop replacement of the ammonia unloading compressor, preventing gaseous ammonia from escaping into the environment, completely avoiding operator contact with gaseous ammonia, reducing the risk of poisoning, and ensuring operator safety.

This invention relates to the field of water treatment technology for recirculating aquaculture systems (RAS), and discloses a method for rapidly cultivating stable nitrifying bacteria in a land-based recirculating aquaculture system. The method includes the following steps: Step S1, system preparation and enrichment of ammonia-oxidizing bacteria; Step S2, oxygen deprivation and regulation to inhibit ammonia-oxidizing bacteria and create a growth window for nitrite-oxidizing bacteria; Step S3, restarting oxygenation to promote the establishment of nitrite-oxidizing bacteria dominance; Step S4, stable system operation. This method for rapidly cultivating stable nitrifying bacteria in a land-based recirculating aquaculture system achieves rapid startup of the biofilter and synchronization with aquaculture production, greatly improving facility utilization. This invention completely changes the traditional two-stage model of "cultivating bacteria first, then releasing fish." By simultaneously releasing low-density aquaculture organisms after system water injection, the bacteria cultivation process is fully integrated into the early stage of aquaculture. This allows the biofilter to reach a stable operating state within 25-30 days after the start of aquaculture, significantly shortening the system idle period.