12results about How to "Big pollution" patented technology

The invention relates to the technical field of composite current collector materials, and provides a preparation method of a PET-based composite copper foil. The method comprises the following steps: (1) dropwise adding concentrated sulfuric acid into a xylene dispersion liquid of a poly (gamma-benzyl-L-glutamate) nanorod, spraying onto the surface of a PET film, standing for reaction, and performing vacuum drying; (2) spraying an acetic acid solution of hydrobromic acid to the surface of the PET film, standing for reaction, washing and vacuum drying; (3) soaking the PET film in ammonia water, soaking the PET film in a silver nitrate solution, and soaking the PET film in a formaldehyde solution; and (4) chemical copper plating. The method not only can improve the interface bonding between the PET base film and the copper plating layer, but also has good environmental protection property and economical efficiency.

The utility model discloses an infusion bag structure with double needleless joints, and aims to solve the problems that in the prior art, when a needle cylinder syringe is used for adding medicine into an infusion bag, a syringe needle needs to pierce the infusion bag, at the moment, needle stabbing is prone to occurring, pollution is increased, an infusion bottle plug needs to be pierced by an infusion apparatus when nurses conduct intravenous infusion on a patient, and infusion is inconvenient. The needle stick injury is easily caused; the infusion particles are increased; and the pollution is caused. The infusion bag structure comprises an infusion bag, a liquid drainage pipe is installed in the infusion bag in a penetrating mode, a first external thread connector is installed at the bottom end of the liquid drainage pipe, and a first valve shell is arranged below the first external thread connector. At the moment, the needle injury is easy to occur, pollution is increased, and when nurses carry out intravenous infusion on patients, an infusion bottle plug needs to be punctured by an infusion apparatus, the needle injury is also easy to cause, and infusion particles and pollution are increased.

The invention discloses a fluorescent biosensor for one-step detection of miRNA based on CRISPR / Cas13a and primer exchange reaction, which comprises a CRISPR / Cas13a reaction system consisting of Cas13a protein, crRNA corresponding to the Cas13a protein and a hairpin H1, and a primer exchange reaction system consisting of Bst3.0 DNA polymerase, a buffer solution of the Bst3.0 DNA polymerase, a hairpin H2, dNTP and a molecular beacon MB, and realizes one-step detection of target nucleic acid. And the instability of the detection process and the complexity of operation are remarkably reduced, and great clinical application potential and value are shown.

The utility model discloses a double -cabin back -suction cosmetic pump and cosmetic container, under the liquid outlet state, press the interface under the action of external force, make the volume of back -suction cabin and power cabin be compressed to make the cosmetic in power cabin enter back -suction cabin through power channel, then enter liquid outlet channel through liquid outlet valve, under the reset state, under the action of reset device, make the volume of back -suction cabin be expanded to make the cosmetic in liquid outlet channel back -suction to back -suction cabin, and make the volume of power cabin be expanded to make the cosmetic in external cosmetic jar enter power cabin through liquid inlet valve. Double -cabin back -suction cosmetic pump can pump out the cosmetic in cosmetic jar under the action of pressing device, and can back -suction the cosmetic remaining in pressing device into double -cabin back -suction cosmetic pump. The cosmetic pump itself is used as buffer zone between cosmetic jar and liquid outlet pipeline, and the contaminated cosmetic is enclosed in buffer zone, that is, in back -suction cabin, thereby avoiding expanding pollution.

The present invention provides a high-efficiency multi-stage braking mechanism. The present invention includes a housing, a plunger sleeve arranged on the housing and fixed or reciprocating relative to the housing, a plunger arranged on the plunger sleeve and reciprocating relative to the plunger sleeve, and a hydraulic control unit. At least one first channel is arranged on the side wall of the plunger sleeve, and a locking body is arranged in the first channel and reciprocates relative to the first channel. The hydraulic control unit is connected to the second oil chamber formed between the plunger and the plunger sleeve, and is also connected to the first oil chamber formed between the plunger sleeve, the housing and the locking body. By adjusting the connection relationship between each oil chamber and the low-pressure source and the high-pressure source, the failure mode, the first effective mode and the second effective mode are realized. The mechanism is compact in size and high in reliability. It can replace a certain component of the original valve mechanism to meet the requirements of compact engine installation and use of the original valve mechanism components as much as possible, so as to realize multi-stage braking of the engine and extremely low-cost product upgrades, which is very conducive to product promotion and application.

The invention discloses a preparation method for synthesizing a framework-containing Ga-MFI molecular sieve without a template agent, which simplifies the traditional synthesis process, reduces the production cost and reduces the environmental pollution. According to the method, no organic template agent needs to be added, the introduction process of gallium is simplified, the production efficiency and environment friendliness are improved, and the integrity and stability of the molecular sieve are kept.

The invention relates to a preparation method of a senbacolide intermediate, and belongs to the technical field of medicine synthesis. The preparation method comprises the following steps: dissolving o-chloroacetophenone in a solvent, adding copper bromide, heating to reflux, carrying out a reaction, filtering after the reaction is finished, adding a sulfite aqueous solution or a hydrosulfite aqueous solution, carrying out a stirring reaction, washing with water after the reaction is finished, and concentrating to obtain the senbacolide intermediate which is 2-bromo-2 '-chloroacetophenone. According to the method, copper bromide is used as a bromination reagent, so that the selectivity is good, and the yield and purity of the product are relatively high. According to the preparation method, bromine can be generated in situ for reaction by using copper bromide, so that direct use of bromine which is high in toxicity, strong in irritation and high in environmental pollution is avoided, and the process is safer and more suitable for the field of pharmacy. White precipitate cuprous bromide is generated in the reaction, so that the reaction process is convenient to observe, the cuprous bromide is easily removed by filtration, and the product is simple and convenient to purify.

The utility model discloses a device for removing foreign matters in raw material concentrate, which comprises a removing bin, a feeding pipe, a conveying pipe and a conveying belt, the feeding pipe is communicated with the upper end of the removing bin, the conveying pipe is arranged at the lower end of the removing bin, the conveying belt is arranged below the conveying pipe, a filter screen is arranged in the removing bin, and the filter screen is arranged in the removing bin. A filter screen is arranged on the side wall of the feeding pipe, a first vibration motor is arranged at the lower end of the filter screen, the first vibration motor is used for carrying out vibration screening on raw material concentrate on the filter screen, a second vibration motor is arranged on the side wall of the feeding pipe, and the second vibration motor is used for carrying out shaking dispersion on the raw material concentrate in the feeding pipe. The utility model provides a device for removing foreign matters in raw material concentrate, which can effectively remove impurities such as large materials, metal blocks and plastic films in lepidolite raw material concentrate, improve the operation efficiency and stability of a batching station, reduce the production cost and risk and improve the product quality and yield.

The utility model discloses a pellet sintering furnace which comprises a furnace structure, a filtering structure is fixed on one side of the furnace structure, a spraying and collecting structure is fixed in the filtering structure, the furnace structure comprises a pellet sintering furnace body serving as a body, a flange connecting pipe is installed on one side of the pellet sintering furnace body through a smoke exhaust pipe, and a water inlet is formed in the other side of the pellet sintering furnace body. Meanwhile, a high-frequency fan is installed at the bottom of the flange connecting pipe, the bottom of the high-frequency fan is connected with a filtering structure through another flange connecting pipe in an embedded and through mode, the filtering structure comprises a filtering box internally provided with a through hole partition plate, a bearing seat is fixed in the filtering box, and a spring clamp is fixed in the bearing seat; and a connecting shaft is rotationally installed in the bearing seat, a clamping seat making contact with the spring clamp for limiting is fixedly welded to the surface of the connecting shaft, and meanwhile, a connecting disc is fixed to one end of the connecting shaft.

The utility model discloses a strain activation fermentation box for organic fertilizer production, which belongs to the technical field of organic fertilizer production, and comprises a bottom plate, support plates are arranged on two sides of the upper end of the bottom plate, a box body is arranged at the upper ends of the support plates, a discharge pipe is arranged in the middle of the lower end of the box body, and a feed port is arranged in the middle of the upper end of the box body. A stirring assembly is arranged in the box body, a motor is arranged in the stirring assembly, a heating atomization box is arranged on one side of the upper end of the bottom plate, a conveying pump is arranged at the upper end of the heating atomization box, and the conveying pump is connected with the box body through a conveying pipe. The main shaft rotates to drive the auxiliary shaft to rotate anticlockwise through the main gear and the auxiliary gear, the main shaft and the auxiliary shaft rotate oppositely to drive the multiple stirring rods to stir the organic fertilizer in the box body, and by arranging the stirring assembly, the main shaft and the auxiliary shaft rotate oppositely to drive the multiple stirring rods to stir the organic fertilizer in the box body, and the stirring effect is better.

The utility model relates to the technical field of concrete mixing, and discloses a concrete mixing plant for processing commercial concrete, which comprises a bottom plate and support columns, the supporting column is fixedly arranged on the side face of the bottom plate. The lifting mechanism is fixedly arranged above the bottom plate; the lifting mechanism comprises a second motor fixedly arranged above the bottom plate, and a connecting frame is rotationally installed above the bottom plate. Compared with a traditional device, the device has the advantages that the height of the batch hopper can be changed by starting the lifting mechanism by starting the second motor, and the problems that normal discharging cannot be achieved due to the fact that a discharging trolley is low, splashing is generated during discharging due to the fact that the discharging trolley is high, and environmental pollution is increased are solved; according to the lifting and cleaning device, the use cost is improved, the working efficiency of the device is improved, material waste is reduced, and through the technical scheme, the lifting and cleaning problems in the prior art are solved.

The utility model discloses a waste recycling device which comprises a cutting device, a transfer device, a cleaning device and a smashing device, the cutting device is arranged at the left end of the transfer device, the cleaning device is arranged at the right end of the transfer device, and the smashing device is arranged at the right end of the cleaning device. The cutting device comprises a first shell, a first feeding port is formed in the upper end of the first shell, a first discharging port is formed in the lower end of the first shell, a first driving shaft is arranged in the first shell, a first driving motor is arranged at the left end of the first shell, and the first driving motor is connected with the first driving shaft. And a plurality of cutting knives are arranged on the first driving shaft. According to the waste material recycling device, wood waste materials can be cut, cleaned and smashed, the wood waste materials are recycled and reused, the waste material recycling device can be used for papermaking and pulping, waste is reduced, and pollution to the environment is also avoided.