53results about How to "Play an isolation effect" patented technology

The invention belongs to the technical field of environmental monitoring, and relates to a dual-channel gas state mercury exhaust gas sampling system. The dual-channel gas stage mercury exhaust gas sampling system comprises a sampling gun, a heat tracing pipeline and a sampling host machine, wherein two sampling pipes can be installed on the sampling gun. A water removal device and an acid removal device are sequentially connected between the heat tracing pipeline and the sampling host machine. The sampling host machine comprises a sampling pump, a flow control valve used for regulating sampling flow, and a gas flow metering device, wherein the sampling pump, the flow control valve and the gas flow metering device are communicated through pipelines. Vacuum degree control valves are connected at two ends of the sampling pump in a parallel mode. The gas flow metering device comprises a dry-type gas flow meter, a rotary coder and a counter, wherein the rotary coder is fixed on a transmission shaft of a counting plate of the dry-type gas flow meter, a signal output by the rotary coder is sent to the counter, and the counter measures volume of gas according to the output signal of the rotary coder. According to the dual-channel gas state mercury exhaust gas sampling system, accurate measurement of gas flow can be achieved and the sampling pipes can be effectively protected.

The invention relates to a flame-retardant microcapsule phase-change material. The flame-retardant microcapsule phase-change material is prepared from a core material, a flame-retardant wall material, an emulsifier, benzoyl peroxide (BPO) and deionized water, wherein the core material is fatty acid ester, the flame-retardant wall material is a crosslinking polymer of reactive phosphonate monomer and tetramethylol methane tetraacrylate, and the emulsifier is a mixture of nonionic surfactant and ionic surfactant. The flame-retardant microcapsule phase-change material provided by the invention has excellent performance and is safe and environment-friendly; since reactive phosphonate-modified acid ester polymer is used as the microcapsule wall material, good flame retardation effect, good water resistance and good solvent resistance are obtained, and reduction in phase change enthalpy of the phase-change material caused by an additive flame retardant can be avoided; and since aliphatic ester is used as a phase-change material, better thermal stability and chemical stability are obtained, and a heat release rate is lower.

A high-effective cycling injecting envelope pump fiber amplifier, including: the inputting end separator 4, the series connection standard monofilm fiber 10, the double envelopes fiber 1, the series connection standard monofilm fiber 10, and the outputting end separator 5, the characteristic is: uses the multimode / monofilm mixing WDN parts that consists of the monofilm single-core collimator, the medium filter slice and the multimode / monofilm mixing double-core collimator, and 2*1 multimode fiber combiner 14 to be the cycling injecting structure, the high reflectivity filter slice makes the sparing pump luminous energy to enter the cycling road, improves the pump efficiency of the envelope pump fiber amplifier, and reduces the cost.

The invention provides a thermometer decoding structure applied to a high-speed DAC circuit. The structure comprises two thermometer decoders, high 4-bit data weighted by the high-speed DAC circuit unit is divided into a highest 2-bit binary code and a second highest 2-bit binary code, and the highest 2-bit binary code and the second highest 2-bit binary code are input into the two thermometer decoders respectively to obtain two groups of 3-bit thermometer codes with different weights; the two thermometer decoders are respectively connected with a DEM module, and the DEM module randomly scrambles the 3-bit thermometer codes; the two thermometer decoders are connected with a data gating module of a weight unification processing array, and 15-bit thermometer codes with consistent weights areobtained through the weight unification processing array. According to the invention, the circuit scale can be reduced, the layout area can be reduced, the high-frequency performance of the circuit can be improved, the harmonic distortion in the output signal can be suppressed, the working speed and the driving capability are high, the influence of parasitic capacitance is reduced, and the working frequency of the circuit is improved.

The invention provides a sound insulation and noise reduction wall body of a sound elimination and noise reduction movable operation room for machining. The sound insulation and noise reduction wall body comprises dust isolation screen doors, sound absorption groove plates and sound absorption water tanks. A dust isolation screen door fixing frame is fixed to the upper side of a bottom face structure; the dust isolation screen doors are fixedly mounted on the dust isolation screen door fixing frame by rotary hinges; sound absorption cotton is fixedly pasted on one lateral wall face of a soundabsorption cotton wall body; the sound absorption groove plates are fixedly mounted on the sound absorption cotton wall body pasted with the sound absorption cotton; the sound absorption groove platesare arranged on the inner sides of the dust isolation screen doors; and the sound absorption water tanks are arranged on the rear sides of the sound absorption cotton wall body. According to the sound insulation and noise reduction wall body of the sound elimination and noise reduction movable operation room for machining, the sound absorption groove plates are arranged on the sound absorption cotton wall body at equal intervals, a layer of sound absorption cotton cloth structure is pastes on the sound absorption groove plates, so that noise absorption areas of the sound absorption groove plates are increased by array arrangement of the sound absorption groove plates, and therefore noise absorption effect can be improved and rapid spread of noise is effectively reduced.

The invention provides a sampling isolation chamber and a system, and relates to the technical field of sampling isolation chambers. The sampling isolation chamber comprises a chamber body and a sampling operation table, wherein the sampling operation table comprises a movable support, a drive device, a first operation table assembly and a second operation table assembly; the first operation tableassembly and the second operation table assembly are in butt joint so as to form the sampling operation table, so that medical personnel can conveniently take medical disinfection and sampling supplies during operation sampling; and when the first operation table assembly and the second operation table assembly are separated, the sampling operation table is separated from the center of the position directly opposite the medical personnel to two sides, a space is cleared in the front of the chamber body facing the medical personnel, and no separation exists between the sampling operation tableand the medical personnel, so that the occurrence of the phenomenon that the sampling operation table is placed between a sampled person and the medical personnel so as to interfere with the samplingoperation and hinder the sampling is avoided, and the occurrence of the phenomenon that accidental touch or expired gas of the sampled person carries bacterial viruses to cause the secondary contamination of the medical sampling supplies and increase the risk of infection of a next sampled person is avoided.

Disclosed are a VDMOS field effect transistor and a forming method thereof. The method includes providing a substrate provided with a first type dopant; forming first and second grooves in the substrate; forming a first insulation layer on the side wall of the first groove, and forming a second insulation layer on the side wall of the second groove; filling the first groove with a first polycrystalline silicon layer with the second type dopant, and filling the second groove with a second polycrystalline silicon layer with the second type dopant; forming a first buried layer with the second type dopant on the substrate below the first polycrystalline silicon layer, and forming a second buried layer with the second type dopant on the substrate below the second polycrystalline silicon layer; forming a first well region on the substrate between the first and second polycrystalline silicon layers in a doped manner; forming a second well region on the first well region; forming a first gate electrode on the first well region; forming a first source electrode on the second well region and forming a first leakage electrode on the upper surface of the first polycrystalline silicon layer. By the aid of the telescopic scheme, the extension growing process is omitted, and cost is low.

The invention relates to an explosion-proof three-phase asynchronous outer rotor motor. The motor comprises a motor stator and a stator coil which are arranged on a main shaft. An outgoing line is connected to the stator coil. A bearing is arranged in the main shaft. A motor rotor is arranged on the main shaft in a rotating way by the bearing. A fastening bolt is screwed on the end part of the main shaft. A sealing cap is arranged on the fastening bolt. An end cover is fixedly arranged on the main shaft by the fastening bolt. A connecting sleeve is fixedly arranged on the end cover. The outgoing line is inserted into the connecting sleeve. An explosion-proof filler is filled between the outer wall of the outgoing line and the inner wall of the connecting sleeve. The outgoing part of the motor is provided with the connecting sleeve and epoxy resin is filled in a gap after the outgoing line is inserted to effectively isolate explosive gases; and certain assembly precision and certain axial jointing lengths are adopted for all jointing surfaces to effectively achieve an isolation effect.

The invention relates to a device for semiconductor laser unit Zn impurity source diffusion. The device comprises a first diffusion heating furnace and a second diffusion heating furnace which are arranged on a track in sequence. The first diffusion heating furnace is in the shape of a groove with one end sealed. The second diffusion heating furnace is in the shape of a hollow-out ring. The position, at one end of the track, behind the second diffusion heating furnace is provided with a support. The support is provided with a quartz tube with one end sealed and the other end open. A first thermocouple and a second thermocouple are sequentially arranged in the quartz tube in the longitudinal direction. The front-half portion of a quartz boat is arranged on the first thermocouple. The rear-half portion of the quartz boat is arranged on the second thermocouple. According to the device, the separation of a diffusion source and a chip is adopted, a double-temperature area is adopted to control the temperature of the diffusion source and the temperature of the chip, and during the diffusion process, the temperature of the diffusion source and the temperature of the chip are controlled so that the stability of a furnace temperature can be guaranteed; GaAs on the surface layer of the chip of a laser unit is prevented from decomposing in large quantity under the diffusion temperature, so that a high-concentration surface layer which has the advantages of being bright in surface, even in distribution of the Zn concentration, good in repeatability, and free of damage is obtained.

The invention discloses a pickling pond for steel wire production. The pickling pond for steel wire production comprises a pickling pond body and a top plate; a corrosion preventing resin layer is arranged on the side wall of the pickling pond body; a permeating preventing layer is arranged outside the corrosion preventing resin layer; a driving machine is installed above the top plate; pulling handles are arranged on the two sides of the driving machine; the lower portion of the driving machine is connected with a rotating shaft; a ring is arranged on the middle of the rotating shaft; the two sides of the ring are connected with corrosion preventing nets; the lower end of the rotating shaft is provided with a stirring rod; guiding rails are arranged below the positions of end ports of the side faces of the top plate; springs are arranged below the guide rails; guard bars are installed around the top plate; the joint of the top plate and the permeating preventing layer is provided with a groove; a switch door is arranged below each pulling handle; and a gap is formed in the inner side of the ring. The pickling pond for steel wire production is provided with the top plate and the guard bars, the personal safety of a worker can be effectively guaranteed, and metal-containing impurities in the pickling pond can be collected and removed.

The invention discloses a pipeline type internal inflow grille decontamination machine which comprises a rack shell, a driving roller, a rail and a baffle, a first cavity is formed in the inner side of the rack shell, a second cavity is formed above the first cavity, transmission chains are arranged on the inner sides of the first cavity and the second cavity, and sieve plates are connected to theinner sides of the transmission chains; the driving roller is installed on the inner side of the sieve plate, a rolling shaft is connected to the inner side of the driving roller, a speed reducer isconnected to the rear portion of the rolling shaft, a driving motor is installed on the rear side of the speed reducer, the rail is arranged on the outer wall of the transmission chains, a water inletsealing plate is connected to the outer side of the rail, and a water inlet is formed in the inner side of the water inlet sealing plate. The baffle is installed at the upper end of the water outletsealing plate, and a mud receiving disc is arranged above the baffle. According to the machine, sewage can be conveniently decontaminated, sludge on the sieve plate can be conveniently cleaned, the intelligent effect of the equipment is improved through the controller, manual participation can be reduced, and safety is improved.

The invention discloses a fixing device for deep vein catheterization for hemodialysis, comprising a connecting block, wherein the outer surfaces of the two connecting blocks are fixedly installed with a binding tape, the opposite surfaces of the two connecting blocks are fixedly installed with a left hinge block and a right hinge block, the opposite ends of the left hinge block and the right hinge block are hinged through a pin shaft, and the opposite ends of the left hinge block and the right hinge block are provided with a torsion device. A fixing device for inserting a deep vein catheter for hemodialysis, when in use, one end of the left hinge block opposite to the right hinge block is hinged through a pin shaft, the torsion spring on the pin shaft surface enters the socket. At that top of the torsion spring, a fixing strip at one end is driven to be inserted into the T-shape groove. At that same time, the first position bar on the bottom surface of the pin shaft is slidably inserted and connected with the inner wall of the positioning groove on the surface of the right hinge block, so that when the opposite end of the left hinge block and the right hinge block is hinged, the torsion spring is subjected to torsional force, so that the rings formed by the plurality of connecting blocks are nearly circular, so that the wound periphery is not harmed.

The invention discloses fresh-keeping equipment for traditional Chinese medicine storage, and relates to the technical field of traditional Chinese medicine storage. The fresh-keeping equipment comprises a box body, a box cover and a partition plate arranged in the middle of the inside of the box body. The box body is of a regular rectangle structure. The partition plate is vertically arranged at the middle position of the inside of the box body so that the inside of the box body can be divided into two areas with the same volume and structure. The box cover is installed at the top of the box body. Two sealing gaskets which are disposed downwards and are matched with the two areas in the box body are further arranged at the bottom of the box cover. Three layers of box walls of the box body are arranged. The inner layer serves as a ventilation layer, the middle layer serves as a slow release layer and the outer layer serves as an isolating layer. According to the fresh-keeping equipment, through the special structural style of the box body and the box cover as well as the functions and effects of all structures, traditional Chinese medicine can be effectively protected from being affected by moisture, mildew and other factors, and the integrity and storage time of the traditional Chinese medicine are also effectively protected.

The invention discloses an offshore wave wind power generation device which specifically comprises a base which is provided with a circular-truncated-cone-shaped base body and an edge groove hemisphere groove formed in the edge side of the base body. An upper power generation device is provided with a mounting seat body and a wind power rotating generator arranged above the upper power generation device, wind power rotating fan blades are arranged on the outer side of the wind power rotating generator, sea surface wind flow at the top can be utilized, and a wind power generation structure above can be independently used; the whole device is not affected to displace under the action of wave energy, the device is arranged in a surrounding mode, and wind currents in all directions can be utilized. According to the sea wave wind power generation device, strong wind power on the sea surface can be utilized, the device can be utilized to continuously move up and down to generate power under the action of wave energy, and the device can be used for utilizing various energy sources.

The invention discloses a sealed damp-proof file cabinet comprising a cabinet body; a plurality of placing grooves are formed in cabinet doors; the cabinet door is rotationally mounted on each placinggroove; an isolation strip is fixedly adhered to the edge of each cabinet door; a circle of second filling cavity is sequentially formed in each isolation strip; a first filling cavity is formed in one side of each second filling cavity, the first filling cavities are formed in the isolation strips, semi-permeable membranes are arranged between the second filling cavities and the isolation strips, suction cups are arranged below the first filling cavities, and breathable membranes are arranged above the first filling cavities. According to the device, the isolation strips are arranged at theedges of the cabinet doors, the isolation strips can be effectively adsorbed on the cabinet body according to the humidity, and in the process from water absorption to water loss of a saline solutionin the first filling cavities in an environment with relatively high air humidity, the sucking discs can also be extruded and then adsorbed on the cabinet body, so that a sealing effect is achieved.