67results about How to "Cause pollution" patented technology

The invention relates to the technical field of food fresh-keeping materials, and discloses a preparation method of an intelligent response degradable fruit and vegetable fresh-keeping film based on a Janus structure, the intelligent response degradable fruit and vegetable fresh-keeping film comprises a hydrophobic layer and a hydrophilic layer, the hydrophobic layer is an electrostatic spinning film formed by compounding eugenol-loaded ZIF-8 nano-particles and polylactic acid, and the hydrophilic layer is an electrostatic spinning film formed by compounding eugenol-loaded ZIF-8 nano-particles and polylactic acid. The hydrophilic layer is an electrostatic spinning membrane formed by compounding chitosan and gelatin, the surface of the hydrophobic layer is covered with the hydrophilic layer through an electrostatic spinning technology, the ZIF-8 nanoparticles are synthesized through a room-temperature stirring method, and synthesis raw materials are a 2-methylimidazole methanol solution and a zinc nitrate methanol solution. By means of the pH response characteristic of the ZIF-8 nano-particles, pH value change signals generated in the early stage of fruit and vegetable putrefaction can be sensitively captured, loaded antibacterial components are accurately released through ZIF-8 framework dissociation, targeted inhibition on putrefying bacteria is achieved, passive protection is converted into active intervention, the fruit and vegetable putrefaction process is effectively delayed, the fresh-keeping effect is improved, and the fresh-keeping time is prolonged.

The utility model discloses a lithium ion battery fluid collecting device, and belongs to the technical field of lithium ion battery detection auxiliary equipment. The device is provided with a gas collection chamber, a puncture device arranged at the gas inlet end of the gas collection chamber, and an exhaust soft rubber sealing joint arranged at the exhaust end of the gas collection chamber, the flexible glue adsorption head is mounted at the bottom end of the puncturing device and is used for being adsorbed on the surface of the lithium ion battery in a sealing manner; the bottom end of the puncture device is provided with a puncture needle capable of penetrating into a closed cavity formed by the flexible glue adsorption head and the surface of the lithium ion battery, and the bottom end of the puncture device is further provided with an adjusting device which can be penetrated by the puncture needle and is used for compensating the length of the puncture device. The gas collecting device has the advantages of being simple in structure, convenient to operate and high in gas collecting efficiency.

The utility model discloses a sand screening device for building construction, and relates to the technical field of sand screening for building construction, the sand screening device comprises a device main body and a sand screening mechanism, the sand screening mechanism is arranged on the inner side of the device main body, and by arranging the sand screening mechanism, the telescopic length of a hydraulic lifting rod is adjusted, so that the position of a sand throwing plate is conveniently changed according to the sand amount; sand in the sand storage tank is thrown to the sand screening net through the sand throwing plate, the sand is more dispersed and uniform in the falling process through throwing, when the sand is thrown up through the sand throwing plate, the mass stress of large-particle broken stones mixed in the sand is larger, and therefore the large-particle broken stones are thrown farther than the sand, the large-particle broken stones fall into the collecting bin, and the collecting efficiency is improved. And meanwhile, the sand blocking fan blows air inwards, so that the sand is subjected to outward wind resistance, a large amount of sand is prevented from being thrown into the collecting bin, the sand screening effect is ensured, broken stones entering the collecting bin are screened through the sand filtering screen, and normal sand entering the collecting bin can fall into the sand outlet so as to be taken and used together.

The invention provides novel injection type glycerine enema which comprises an injection assembly, and the injection assembly comprises an injection tube, a piston, a push rod, a push block, a nipple, a fixing ring, a sealing ring, a gradually-hardened tube, a cavity, an L-shaped plate, a clamping block, a flexible steel rope, a pull ring, a mounting block and a clamping groove. And a piston is connected to the inner wall of the injection tube in a sliding manner. The gradually-hard tube is inserted into a place where the injection tube is inserted, the push block is pushed to drive the push rod to move, the push rod drives the piston to slide on the injection tube, and liquid medicine is pushed in through the gradually-hard tube, outflow and injection caused by two-time extrusion of common glycerine enema are avoided through one-time injection of 20 ml, two-time mucosa damage is avoided, pollution caused by excrement back-pumping after extrusion is finished is avoided, and the injection efficiency is improved. The pull ring is pulled leftwards, the pull ring drives the clamping block to be separated from the clamping groove through the flexible steel rope, the sealing ring is moved to take down the gradually-hard tube, and the gradually-hard tube is disinfected and cleaned respectively, so that the comfort degree is improved, the rectal mucosa is not prone to being damaged, all liquid medicine can be pushed in in a pushing injection mode, and the liquid medicine is not left and wasted.

A kind of water bottom electromagnetic detection equipment platform and its launching and recovery method, including upper top plate, middle layer plate and lower bottom plate from top to bottom in turn, the three layers of plate fixed connection constitute square fixed plate, limit space is arranged between upper top plate and lower bottom plate, electromagnetic detection equipment is installed in the limit space, the electromagnetic detection equipment contains several sensors and measurement arm I, measurement arm II, measurement arm III, measurement arm IV respectively extend outward along the diagonal direction of the four corners of the square fixed plate, can significantly improve the recovery reliability, operation flexibility and task success rate of water bottom electromagnetic detection equipment in complex shallow water environment. The platform is connected by releasing structure and platform using buoyancy cylinder, the recovery of the platform is realized, transducer release, timing release, electromagnetic signal release three independent release modes are integrated on the same platform, the recovery success rate and task reliability of seabed electromagnetic detection equipment in complex environment are significantly improved.

The invention provides a seawater hydrogen production and storage system and a seawater hydrogen production and storage process using offshore wind power. The seawater hydrogen production and storage system comprises a permeable membrane system, a two-stage RO membrane system, an EDI ultrapure water system and a hydrogen production and storage system, and the permeable membrane system, the two-stage RO membrane system, the EDI ultrapure water system and the hydrogen production and storage system are connected in sequence; in the seawater purification direction, the permeable membrane system comprises a forward osmosis module and permeable membrane modules, the forward osmosis module comprises a forward osmosis membrane and absorption liquid, the absorption liquid is selected from a sodium chloride solution with the mass concentration of 3-15%, and the number of the permeable membrane modules connected in series is 1-3. According to the seawater hydrogen production and storage system, the seawater is subjected to graded purification, the purified seawater can be directly discharged to the sea, the purified ultrapure water can thoroughly avoid a series of problems of chlorine, calcium and magnesium precipitation and the like in the subsequent water electrolysis hydrogen production process, and liquid hydrogen storage oil is directly prepared through the hydrogen production and storage system and is convenient to transport on the sea and other scenes.

The utility model relates to the technical field of colorectal cancer detection, in particular to a colorectal cancer early screening detection device which comprises a transparent glass bottle main body and a cylinder main body, the cylinder main body is arranged in the transparent glass bottle main body, and a flange plate main body is installed at the top end of the cylinder main body. A filtering disc is fixedly mounted at the bottom end of the cylinder main body, filtering holes are formed in the filtering disc, a mounting groove is formed in the top end of the transparent glass bottle main body, and a sealing cover body is in threaded connection with the top end of the transparent glass bottle main body. Through the design of the rotating ball and the stirring rod, excrement at the top end of the filtering disc is punctured and stirred through the stirring rod, blood in the excrement is separated through water injection, the separated blood falls into the top end to be subjected to early screening detection, and by means of the early screening detection mode, it can be avoided that due to the heavy taste of the excrement, the excrement cannot be damaged easily; and environmental pollution is caused.

The utility model relates to the technical field of water meters, in particular to a double-channel direct drinking water meter which comprises a shell, a water inlet pipe and a water outlet pipe. The counting assembly is arranged on the outer side of the shell, is connected with the shell and is used for counting; the counting transmission assembly is arranged in the shell and is fixedly connected with the counting assembly; the counting transmission assembly comprises two sets of impellers which are arranged in the water outlet space and the water return space respectively, and the number of rotation turns of the impellers is recorded through the counting assembly. Fluid passes through the impellers to drive the impellers to rotate, the flow of the fluid is determined according to the number of rotation turns of the impellers, meanwhile, the two separated independent impellers are used for preventing the fluid in the water return pipe from entering the water outlet pipe, effective sealing is achieved, and the numerical value recorded by the counting assembly can be reduced during water return. Therefore, the difference is reduced, and fluid in the water outlet pipe cannot be polluted.

This invention belongs to the field of polyolefin preparation and relates to a method for preparing a polyolefin material with low metal impurities and resistance to precipitation. The method includes the following steps: (1) adding polyolefin resin raw material and fatty ketone solvent into the extraction vessel of a supercritical extraction device, introducing a gaseous medium into the extraction vessel, adjusting the temperature and pressure of the extraction vessel to make the gaseous medium be in a supercritical state, and treating the polyolefin resin raw material in a supercritical fluid; the fatty ketone solvent is C3-C 10 (1) At least one of the fatty ketone solvents; (2) Cooling and depressurizing to separate the polyolefin resin raw material from the solvent phase and drying it to obtain the polyolefin material with low metal impurities and resistance to precipitation. The method provided by the present invention has high efficiency in removing metal impurities from polyolefins and simultaneously achieves the removal and control of the content of soluble polymers, which significantly improves the purity and precipitation resistance of polyolefin resins.

The utility model discloses a sealant storage device which comprises a storage box. A discharging screw rod is arranged in the middle of the storage box, an inner sealing groove is fixedly connected to the middle of the bottom surface of the storage box, and a discharging opening is fixedly connected to the lower end of the inner sealing groove; wherein the middle of the limiting groove is slidably connected with a lifting rod, the bottom of the lifting rod is fixedly connected with an inner sealing plug, the middle of the inner sealing plug is provided with a positioning block, the top end of the lifting rod is rotatably connected with a first connecting seat, and the middle of the first connecting seat is in threaded connection with an opening and closing screw rod; wherein a sliding rod is slidably connected to the middle of the lifting rod, an outer sealing plug is fixedly connected to the bottom of the sliding rod, a guide rod is slidably connected to one side of the lower end of the sliding rod, and a guide block is slidably connected to one side of the guide rod. The residue of the sealant at the discharge hole is conveniently reduced, and the secondary sealing effect is achieved.

According to the construction process, a hopper feeding device, a transmission system, a heating extrusion device, a cooling shaping device, a cutting device, a thread rolling device, a traction device, a grinding device and a sterilization device are arranged. The acupuncture needle prepared from the poly (lactic-co-glycolic acid) material has good non-toxic biodegradability, the acupuncture needle prepared from the poly (lactic-co-glycolic acid) material has good in-vivo biocompatibility, degradation products of lactic acid and glycolic acid can participate in metabolism of a human body, and finally carbon dioxide and water are formed and discharged out of the body. Meanwhile, the material is degraded by organisms and microorganisms in the natural world in the natural environment; by adding the traditional Chinese medicine pigment and adding a small amount of surfactant (phenol polyethylene glycol solvent or zinc naphthenate), the finished acupuncture needle has excellent weather resistance, light resistance, chemical corrosion resistance and ultraviolet resistance.

The invention discloses an air conditioning device and refrigeration equipment with the air conditioning device, and the air conditioning device comprises an air conditioning module which is used for preparing oxygen conditioning gas and is provided with a gas collecting cavity; the water tank is provided with a filtering area; the oxygen adjusting gas path is communicated with the gas collecting cavity and the water tank, a tail end pipe of the oxygen adjusting gas path is inserted below the liquid level of the filtering area, and the oxygen adjusting gas path is provided with a suck-back buffering cavity. According to the controlled atmosphere device and the refrigeration equipment with the controlled atmosphere device, the controlled atmosphere gas can be washed with water to wash away electrolyte particles carried in the controlled atmosphere gas, and therefore the situation that food materials are polluted due to the fact that the electrolyte particles are brought into the chamber by the controlled atmosphere gas can be prevented; when the air adjusting module stops working, the air pressure in the air adjusting module can be reduced along with the reduction of the temperature, and the problem that the solution in the water box is sucked back into the air adjusting module due to the reduction of the air pressure in the air adjusting module can be prevented by the suck-back buffer cavity in the oxygen adjusting air path.

The utility model discloses a printing dust removal device for environment-friendly carton production. The printing dust removal device comprises a mounting frame, a limiting assembly and a dust collection assembly. In front of the printing station, the conveying belt assembly stops, the limiting assembly presses downwards to limit the carton board, then the strip-shaped suction nozzle can move transversely to sweep the carton board from the upper portion, dust and chippings on the surface of the carton board are sucked away, cleaning is completed, secondary dust pollution to the carton board is avoided, and the cleaning effect is good.

This application relates to the field of memory module removal technology, and discloses a memory module removal tool, including: a main body, an unlocking mechanism, and a clamping mechanism; the unlocking mechanism includes a first slide rod assembly and a lever; one end of the lever is provided with an unlocking part, and the other end forms a force-receiving part; the lever is used to drive the latch to rotate and unlock through the unlocking part; the first slide rod assembly has a first force-applying end, which is movably connected to the force-receiving part, and the first slide rod assembly is used to drive the lever to move; the clamping mechanism includes a second slide rod assembly, an abutment block, and a clamping arm; the abutment block is used to abut against the memory module, the second slide rod assembly has a second force-applying end that is slidably connected to the abutment block, and the second force-applying end is also driven to cooperate with the clamping arm, which is used to clamp the memory module when the second force-applying end slides; the main body is used to drive the clamping arm to move to remove the memory module from the slot. Through the above method, this application can conveniently unlock and remove the memory module.

This utility model discloses an airtightness testing device with a self-locking function, comprising: a frame, a first drive mechanism, a lower seal, an upper seal, an inflation system, and a pressure detector. The frame includes a worktable and a support frame mounted on the worktable. The lower seal is mounted on the worktable. The first drive mechanism is mounted on the support frame, and its output shaft is connected to the upper seal via a self-locking component. The upper seal has an air passage, and the inflation system and the pressure detector are respectively connected to the air passage. This solution provides accurate testing without causing contamination or damage to the internal parts of the ABS hydraulic unit.

The present application relates to a kind of methods for reducing the residue of liquid medicine filtering system, the filtering system includes filter valve body, inlet pipe, outlet pipe and exhaust pipe are connected to the filter valve body, first valve body is installed on the exhaust pipe, inlet pipe is connected to the outlet pipe, second valve body is arranged between the inlet pipe and filter valve body, third valve body is installed on the inlet pipe, discharge pipe is connected to the outlet pipe end, the outlet pipe is obliquely arranged, by sequentially opening and closing between each valve body, gas is discharged from the liquid medicine remaining in filter valve body, thereby effectively saving data, reduce production cost.

The invention provides a method for preparing silanol by silane hydrolysis, which comprises the following steps of: reacting silane serving as a reaction raw material, water serving as an oxide and a metal compound serving as a catalyst to obtain silanol; wherein the molecular formula of the silane is SiHR1R2R3, and R1, R2 and R3 are independently selected from C1-C4 alkyl, phenyl, alkyl-substituted phenyl, halogen-substituted phenyl and alkoxy-substituted phenyl; the metal compound is carbonate of sodium, potassium or cesium. According to the method for preparing silanol through silane hydrolysis, hydrogen is a unique by-product and cannot pollute the environment, and the requirement for green catalysis is met. In addition, the metal compound catalyst is low in cost, the target product silanol can be separated by extracting a reaction mixture, the product yield is high, operation is simple, and implementation is easy. In addition, the method is mild in reaction condition and easy for industrial application.

The application belongs to the technical field of functional pigments, and particularly relates to a preparation method of high-light-resistance composite pigments. The preparation method of the application is that: after pretreatment and cleaning, hexagonal boron nitride is obtained to be modified boron nitride nanosheet, and then the modified boron nitride nanosheet is compounded with organic pigments to obtain ideal high-light-resistance composite pigments. The modified boron nitride nanosheet used in the application can be better combined with the organic pigments by using the principle of entropy increase, the rich electron boron-nitrogen plane of the hexagonal boron nitride and the aromatic conjugated system of the lithol red molecules produce pi-pi stacking interaction, and then the two are driven to self-assemble to form high-light-resistance composite pigments, and the high-light-resistance composite pigments form a structure that is compact. The high-light-resistance composite pigments obtained by the application still maintain the chemical structure and gloss of the original organic pigments, and have excellent stability and good light resistance, and the problem of poor light resistance of the organic pigments is solved.

This invention provides a laser engraving machine for aluminum single-panel panels with flatness detection and correction functions, belonging to the field of aluminum single-panel processing technology. It solves the technical problems of existing clamping methods, such as the need for flatness adjustment during clamping and the tendency for clamping to cause deformation of the aluminum single-panel. This laser engraving machine for aluminum single-panel panels with flatness detection and correction functions includes a worktable, a frame fixed to the upper rear of the worktable, a body fixed to the upper side of the frame, a laser engraving mechanism mounted on the body, and a clamping mechanism on the upper side of the worktable. The clamping mechanism includes a clamping table with a clamping groove on its upper side, limit grooves on the left and right sides of the clamping groove, and an open front side of the limit groove. A coolant tank is fixed to the lower end of the clamping groove, and a piston plate is slidably connected inside the coolant tank. A mounting groove is also provided at the lower end of the clamping groove, and a lifting mechanism is installed inside the mounting groove. This invention has the advantages of improving the uniformity of engraving and ensuring the quality of engraving.

The application discloses a kind of carbon dioxide electro-reduction reaction devices under strong magnetic field, including superconducting magnet (1), this superconducting magnet (1) is equipped with vertical superconducting magnet cavity, the top of the side wall of the superconducting magnet cavity is equipped with screw hole (5), the two arms of electrolytic cell support (3) are equipped with through hole (8) and are fixed in the top of the side wall of superconducting magnet cavity by screw (6), the middle part of electrolytic cell support (3) is equipped with recess (9) and hangs in the superconducting magnet cavity, is located in the position of magnetic field center, electrolytic cell (2) is placed in recess (9).Electrolytic cell (2) is connected with electrochemical workstation (4) by electrode wire (7).Electrolytic cell support (3) is designed and modeled using SolidWorks software, polylactic acid material is selected, and is formed by 3D printing technology.The structure is simple, convenient to operate and disassemble, and will not pollute the magnet, will not affect the normal work of magnet, and has important role for the regulation of strong magnetic field on CO2RR reaction.

The utility model relates to coffee filter technical field especially, more specifically to a coffee filter assembly, including filter cup and setting at the limit of the edge of filter cup top end opening edge place stop, still including the movable fender ring of sleeve joint in the outside of filter cup and a plurality of circumferential array setting support rod at movable fender ring edge place, the middle of movable fender ring is provided with the through -hole of accommodating filter cup from top to bottom to pass through, and movable fender ring abuts at the bottom of limit stop edge and provides support, support rod length one end all with movable fender ring articulate, can place filter cup on different caliber coffee utensil and use, satisfy different use demand, bend into vertical simultaneously with support rod and support filter cup when not using, avoid placing filter cup directly on the desktop and cause pollution, more safe and sanitary.

The utility model relates to the technical field of termite trapping equipment, in particular to a termite trapping and killing integrated device which comprises an outer cylinder, a trapping cavity used for collecting termites is formed in the outer cylinder, a cover plate is installed on the top of the outer cylinder, and a plurality of trapping openings allowing the termites to enter are formed in the outer side of the cover plate. The inner wall of the trapping cavity is provided with a plurality of ultraviolet lamps capable of killing termites, the ultraviolet lamps are externally connected with a control switch through wires, the control switch controls the ultraviolet lamps to be turned on and turned off, and the inner side of the bottom of the outer cylinder is provided with a termite trapping agent used for trapping the termites. According to the termite trapping and killing integrated device, through multiple trapping design, the attraction effect on termites is remarkably improved. The termite trapping agent arranged on the inner side of the bottom of the outer cylinder can emit specific smell and generate strong attraction to termites; and a sweet coating is arranged on a pine plate of the bait assembly in the middle of the trapping cavity, so that the attraction to the termites fond of sweet food is further enhanced.

The utility model relates to the technical field of sweet water preparation, in particular to a sweet water mixer which comprises a pump body, a bearing is arranged on a pump shaft of the pump body, the bearing comprises a bearing outer ring, a bearing inner ring, a sealing clamp inner ring and a sealing clamp outer ring, an inserting groove and a second through hole are formed in the surfaces of the two sides of the bearing outer ring, and a first through hole is formed in the surface of the sealing clamp outer ring. The sealing clamp inner rings are fixed to the two sides of the bearing inner ring, outer ring grooves are formed in the outer ring faces of the sealing clamp inner rings, abutting grooves are formed in the surfaces, deviating from the bearing inner ring, of the sealing clamp inner rings, the sealing clamp outer rings are installed on the two sides of the bearing outer ring, and inserting blocks are fixed to the surfaces, facing the bearing outer ring, of the sealing clamp outer rings. The bearing sealing device has the beneficial effects that through the arrangement of the sealing clamp outer ring, the sealing clamp inner ring, the screw rod, the nut and the ejector block, sealing installation and fixation of the bearing are achieved, and water leakage or pollution caused by untight sealing of the bearing is prevented.

The application discloses a kind of crane arm power gas control systems and control method, crane arm power gas control system includes gas source, control pipeline, clamping component and control valve group, control pipeline includes main gas path, balance pipeline and clamping pipeline, main gas path is communicated in gas source, to supply gas to flow along preset direction;Balance pipeline, clamping pipeline are connected in parallel in main gas path;Clamping component includes clamp, balance cylinder and clamping cylinder, clamp is used to clamp load;Balance cylinder is located in balance pipeline, and is connected to clamp, balance cylinder is used to make clamp keep suspended;Clamping cylinder is located in clamping pipeline, and is connected to clamp, clamping cylinder is used to drive clamp clamping load;Control valve group is located in control pipeline, and is located in balance pipeline and clamping pipeline, control valve group is used to control the on-off of balance pipeline and the on-off of clamping pipeline;Wherein, balance cylinder is configured to: adapt to the load clamped by clamp, balance cylinder provides corresponding balance force, to make clamp suspended.

The application provides a multifunctional nanofiltration membrane and a preparation method and application thereof, and the preparation method comprises the following steps: first, preparing a hydrophilic polydopamine oxidation layer on a polyamide nanofiltration membrane; then, grafting a PHFBM self-cleaning layer with low surface energy on the polydopamine layer; then, grafting a PMTAC layer with sterilization performance on the PHFBM layer; finally, grafting a zwitterionic polymer PSBMA layer with a defense function on the PMTAC layer, so as to obtain a multifunctional nanofiltration membrane with the functions of defense, resistance and self-cleaning. The multifunctional nanofiltration membrane prepared by the application can effectively improve the pollution phenomenon of microorganisms by the defense of the hydrophilic material and the sterilization effect of the quaternary ammonium salt while maintaining the advantage of high water flux, and the low surface energy material can make dead cells and extracellular polymers automatically fall off from the membrane surface under low shear force, so that the effect of self-cleaning is realized.

The utility model provides a kind of methanol hydrogen production power generation system for submarine, it is related to methanol hydrogen production power generation technical field, to solve the power of submarine when diving is lower, since liquid hydrogen needs to be stored under ultra-low temperature, and it is more dangerous to store liquid hydrogen and liquid oxygen simultaneously in a submarine, including reformer;Reformer is connected with fuel tank by fuel pump;Reformer is provided with palladium membrane outside;Palladium membrane is connected with burner and hydrogen buffer tank respectively;Burner is connected with oxygen cylinder by pipeline;Hydrogen buffer tank is connected with fuel cell by pipeline;Reaction water storage tank is connected with methanol storage tank by pipeline;Methanol storage tank is connected with fuel tank;Methanol storage tank is connected with fuel tank by metering pump A. Only need to carry methanol as fuel in liquid state at normal temperature, submarine needs to carry high-pressure oxygen or liquid oxygen reaction to produce hydrogen, hydrogen and oxygen generate electricity in fuel cell to supply the electric motor drive of submarine, safe, quiet and efficient.

The microbiological degradation device comprises a tank body, and a cover body is arranged at the top of the tank body; a supporting handle is arranged at the bottom in the tank body, and a limiting column is arranged on the supporting handle; a filter screen is arranged on the supporting handle, a limiting hole is formed in the filter screen, and a limiting sleeve corresponding to the limiting hole is arranged on the upper side wall of the filter screen. According to the device, when the filter screen is replaced, the cover body is firstly opened, then the limiting sleeve is directly and vertically lifted upwards, the limiting hole and the limiting column can be separated from each other, and therefore the filter screen is taken out of the tank body, compared with a traditional device, the filter screen is vertically replaced up and down and can be directly lifted through the limiting sleeve, and the replacement efficiency is improved. Convenience is achieved, and pollution caused by scattering of filter residues is avoided.

The utility model relates to water -cooled air conditioning technical field discloses an energy -saving water -cooled air conditioner, including the outer machine, the inner wall middle part fixed connection of outer machine has the mount no.