41results about How to "Improve the quality of environmental protection" patented technology

The invention provides a needle base assembly rotating and retracting structure of a safety injector. The structure has the following beneficial effects: fastening grooves of the needle base assembly and fastening stops corresponding to a drum body to rotate from the limit and lock state to the non-limit and open state by virtue of automatic deflectors of a needle base assembly, so that a push rod can be rapidly embedded in the needle base assembly and positioned and presents the mode of retracting an injection needle so that the user can carry out the next retraction action, and the needle base assembly can be stably assembled and positioned at the opening end of the drum body and hardly causes the following unexpected phenomena due to the external temperature: the fastening degree between a needle base and the drum body is reduced due to temperature surge, thus causing inward retraction or leakage of the needle base in the injection process, or the needle base and the drum body are excessively fastened due to sudden temperature drop and the injection needle and the needle base can not be retracted into the drum body after injection; therefore the structure can be safely operated by the operator with one hand, improves the environment quality and achieves convenience in retraction use of the injection needle.

The invention relates to a preparation method of a modified comet fiber filtering material. According to the preparation method, polyester fiber raw material is spun into yarns, the polyester fiber yarns are bundled, the polyester fiber yarn bundles are subjected to injection molding and ball pressing and then cut off to obtain the modified comet fiber filtering material. The preparation method further comprises the following steps of: 1, stirring the mechanically processed modified comet fiber filtering material in a rinsing tank, then fishing out and draining water for later use; 2, uniformly stirring a chemical solution in a container and then conveying the prepared chemical solution into an autoclave, wherein the chemical solution comprises the following components in percentage by volume: 2vol% of viscose oil, 1.5vol% of silica gel oil and the balance of water; 3, putting the modified comet fiber filtering material in the autoclave, turning on a heating power supply for increasing temperature, cutting off the power supply when the temperature rises to 110 DEG C, keeping the pressure of 0.11-0.15MPa for 2-3 minutes, then adding cooling water to the autoclave to reduce the temperature to 50 DEG C, turning on an outlet valve so that the fiber filtering material subjected to modification chemical treatment and the chemical solution flow into another container at the same time; 4, fishing out the fiber filtering material subjected to modification chemical treatment, drying in a spin dryer, taking out of the spin dryer and air-drying to obtain the finished product.

The invention relates to a sludge treatment device and method, in particular to a sludge screw-type direct drying device and method and mainly aims to solve the technical problem that existing sludge treatment methods are low in treatment amount and high in cost. The sludge screw-type direct drying device comprises a feeding hopper, a screw conveyor is arranged at an outlet, a discharging port of the feeding hopper faces a feeding port of a spiral extrusion electric heating material dryer, an electric heater wraps the outside of the feeding hopper, a screw of a dryer is driven by a motor through a belt wheel, an exhaust pipe is arranged at the top of the dryer to be connected with a negative pressure material collector, and an outlet of the dryer is connected with the negative pressure material collector; an outlet of the negative pressure material collector is connected with a cyclone separator through a pipeline, the cyclone separator is fixed on a steel frame, a fan is arranged at the lower end of the cyclone separator and connected with a material bin, an air outlet of the cyclone separator is connected with a pulse deduster through a pipeline, and an air outlet of the pulse deduster is connected with a high-pressure fan and a chimney through pipelines. The sludge screw-type direct drying device and method mainly aims to dry and extrude sludge cakes formed by sludge after being mechanically press-filtered and dewatered into granular powder.

The invention relates to an alumina batch charging technique of aluminum electrolysis, in particular to a linear feeding method of an aluminum electrolysis fume purification system. The method of the invention comprises the following steps: 1) batch charging procedure; 2) boiling procedure and 3) batch charging adjustment procedures; the technical conditions are that: the wind pressure of compressed air led into an air chamber at the bottom of a material chamber is 300Pa to 500Pa; the gradient between a boiling bed and a discharge port is 5 degrees to 10 degrees; the adjusting distance of an adjusting plate is 10mm; and the negative pressure of an underground flue is not lower than 400Pa. The technique solves the problem that a fume purification batch charging device of the purification system relies on foreign imported equipment, improves the purifying efficiency of the aluminum electrolysis fume purification system, with the perfluoro purifying efficiency higher than 99 percent; reduces the discharge of pollutants and eliminates environmental pollution caused by the failure of a reactor in the prior art. The liner feeding method of the invention can be widely applied to the fumepurification systems in the aluminum electrolysis production industry.

The invention relates to a device and process for secondarily utilizing coked crude benzene separation water. Separation water distilled by a debenzolization tower for a crude benzene coking procedure serves as a raw material, crude benzene separation water separated by a light benzene control separator is introduced into a final cooling tower as updating supplementation water through a pipeline, and a trace amount of a NaOH solution with the concentration of 40 percent for ammonia still is supplemented into the final cooling tower, so that the separation water and the NaOH solution are mixed to form an alkaline solution; after final cooling circulation, the redundant solution is directly fed into a surplus ammonia water tank from an outlet of a circulating pump and enters an ammonia still system. The separation water serves as the supplemented water, so that a great amount of industrial new water is saved, acid mist carried in coal gas can be absorbed and neutralized by supplementing the trace amount of the NaOH solution, packing supporting of the final cooling tower is prevented, and corrosion prevention of equipment is realized; moreover, part of benzene in the separation water in contact with the coal gas is volatilized, directly enters the coal gas, and reaches a benzene washing tower, and part of light benzene in the separation water is recycled. The process is simple in operation, environmentally-friendly, energy-saving, low in investment cost, and safe and reliable to operate.

The invention provides a retraction device for a safety syringe, in particular a creative design that a syringe needle bed is stably positioned at an opening end of a barrel. A borrow locking device and a retraction embedded linkage device are arranged between needle beds mutually. Due to the creative and unique design, a pull rod head of a pull rod can be rapidly clamped to be positioned on a needle bed group by means of the borrow locking device and the retraction embedded linkage device so as to provide convenience for a user to perform the next retraction action. Meanwhile, the needle bedgroup can be stably assembled and positioned at the opening end of the barrel and hardly makes clamping and sealing functionally damaged due to external temperature change. For example, the clamping degree between the needle bed and the barrel is reduced due to steep temperature rise so as to cause the inner retraction or leakage of the needle bed in the injection process, or the needle bed and the barrel are excessively clamped due to steep temperature reduction, and the injection needle cannot retract after injection and the needle bed enters the barrel, and the like. Therefore, the retraction device for the safety syringe can improve the safety and environmental protection quality.

The invention discloses a regenerative braking energy feedback system. The system comprises diode rectifiers, energy feedback modules, detection loop devices and control circuit devices, a group of energy feedback modules are connected with a group of diode rectifiers in anti-parallel, the energy feedback modules are connected with the detection loop devices, and the detection loop devices are also connected with the control circuit devices. The system can leave out an additional boost transformer for controlling braking energy, effectively reduce cost, reduce energy waste, and improve environmental protection quality.

The present invention provides a new type of integrated fire protection isolation belt for fire protection decoration, which is laid on the building exterior wall (1), corresponding to the height area of ​​the floor slab between floors, and is in the shape of a belt surrounding the wall, extending from the building exterior wall (1) to the The outer layer includes a bonded mortar layer (2) and a fireproof insulation board layer (3) in sequence, and fireproof insulation boards are closely arranged in the fireproof insulation board layer (3), and the fireproof insulation board includes a heat preservation board (31), a cover layer (32) And L-shaped fixture (33), cover layer (32) is a metal plate, and insulation board (31) is the fireproof insulation board that glass fiber and water-soluble phenolic resin prepare. The fireproof isolation board layer in the fireproof isolation belt of the present invention can be prefabricated, which reduces the difficulty of on-site construction. The adhesive mortar layer covers the outer wall in an all-round way, the structure design of the fireproof isolation board and the new insulation board improve the fireproof performance. Compared with the existing The fireproof isolation system of the present invention has the advantages of simple structure, convenient construction, good fireproof and thermal insulation performance, and is beneficial to popularization in the construction field.

The invention relates to a gas purification device for a domestic garbage flash mineralization processor. The processor includes a box body and a chimney. The box body is a closed rectangular box structure composed of an upper top plate, a side vertical plate and a bottom plate, wherein the upper top plate It is an upper arch, and a dome-shaped smoke holder is made in the center of the upper roof, and the gas mixing pipe of the chimney is fixed on the dome-shaped smoke holder. A gas purification device is fixed on the upper top plate of the side of the seat, and the total air inlet pipe and the total gas outlet pipe of the gas purification device are respectively communicated with the gas mixing pipe, and are fixed on the upper and lower gas mixing pipes of the gas mixing pipe cut-off gate. The present invention can strengthen the circulation of smoke and dust through the set external power, and can also carry out catalyst filtration, water filtration, purification agent filtration, activated carbon filtration and automatic prompting for replenishment and drainage, which greatly improves the purification level of the gas and ensures Environmental quality of the exhaust.