90results about How to "Improve exclusion effect" patented technology

The invention discloses a roadway drivage drilling induced polarization advance water probing forecasting method, device and probe. The probe is placed in a drill hole; a power supply negative electrode B is mounted in a roadway outside the drill hole and is connected with an on-site main machine by a power supply cable; a power supply positive electrode A, a measuring electrode M and a measuring electrode N of the probe are mounted inside the drill hole, and are connected with the on-site main machine by the power supply cable and a signal cable; the power supply positive electrode A and the power supply negative electrode B outside the drill hole form the power supply cable; the on-site main machine measures an electric field change signal by the measuring electrode M and the measuring electrode N of the probe; and the electric field change signal is input to the main machine to calculate and detect the apparent resistivity and apparent chargeability of a target; the probe is propelled to repeat the steps at each measuring point to measure the apparent resistivity and apparent chargeability of each point and generate a resistivity profile map and a chargeability profile map; and the rate of change of the apparent resistivity and apparent chargeability is calculated to determine an inner geological structure taking a drilling axis as a central cylindrical space.

The present invention provides a for the precise finish of an optical fiber connector with lasting abrasive power and high life time, a preparing method thereof and an application thereof, and can strengthen self-shaping. The granulation polishing film comprises base material and an abrasive layer coated at the surface of the base material, wherein the abrasive layer comprises resinoid bond and composite abrasive grains in global coacervate; the composite abrasive grains are global coacervates prepared by granulating abrasive powder distributed in the mixing liquid of metal oxide sol and organic or inorganic binder; the resinoid bond comprises epoxide resin and epoxide resin toughener, and also comprises one or several kinds of polyester, polyurethane, daiamid, acrylate and polyurea. The granulation polishing film is used for the grinding finish of the optical fiber connector and optical fiber arrays. The life time is one to two times longer than that of the traditional polishing film for the finish of the optical fiber connector, and the processing cost of the optical fiber connector is reduced.

The invention relates to a mask dust collection device which comprises a closed cavity, a rotating shaft, a rotating bracket, a clamp, a nitrogen spray nozzle and a gas suction pipeline, wherein a mask is horizontally suspended at the upper side inside the closed cavity through the suspending bracket and can rotate around the rotating shaft of the suspending bracket; the nitrogen spray nozzle with a flat spray orifice is used for cleaning and purging the surface of the mask from the lower side of the mask, then blown dust particles and redundant nitrogen are discharged through the gas suction pipeline, and the nitrogen spray nozzle can be translated to the edge part of the mask from a central part below the mask. According to the structure disclosed by the invention, gas flow which is mingled with dust particles is prevented from generating secondary pollution on the mask and the blind area is prevented since nitrogen can be blown to the whole surface of the mask. The mask dust collection device can be used for comprehensively and thoroughly cleaning dust particles on the surface of the mask and lowers nitrogen consumption.

The embodiment of the invention discloses a circuit board resistance welding processing method. The method comprises the steps of pretreatment, resistance welding coating printing, standing, pre-baking, exposure, development and post-curing, wherein the standing step is carried out in vacuum. The method has the following beneficial effects: the bubble elimination capability is improved by adopting vacuum standing; and the problems of insufficient resistance welding thickness and bubble generation during thick copper circuit board resistance welding processing can be solved, the process flow is shortened and the processing time is reduced.

The invention discloses drilling geophysical prospecting advanced detecting device. A first probe wire and a second probe wire are arranged inside a probe of the device, one end of the first probe wire is connected with the signal input end of a first electric brush ring, the other end of the first probe wire is connected with the high-potential signal output end of a first signal sending module, one end of the second probe wire is connected with the signal input end of a second electric brush ring, the other end of the second probe wire is connected with the high-potential signal output end of a second signal sending module, a metal conductive rod is connected with a zero-potential interface of the first signal sending module and a zero-potential interface of the second signal sending module respectively, the current signal input end of a first signal receiving module is communicated with the first probe wire, the current signal input end of a second signal receiving module is communicated with the second probe wire, and the signal output end of the first electric brush ring and the signal output end of the second electric brush ring are connected with the inner wall of a drill stem. The drilling geophysical prospecting advanced detecting device can conduct fine and effective detection prediction on harmful geologic bodies of eutrophic water and water conduction channels around drilled holes of tunnels and roadway heads.

The invention discloses an extractor hood with automatically controlled gears. The extractor hood with automatically controlled gears is characterized by comprising an exhaust fume collecting hood body, a control system, an exhaust fume probe, a temperature sensor and a motor, wherein the exhaust fume probe and the temperature sensor are installed on the exhaust fume collecting hood; and the control system changes the rotation speed of the motor according to signals fed back from the exhaust fume probe and the temperature sensor. The generation and escape conditions of exhaust fume can be accurately mastered, the gears and air volume of the extractor hood can be automatically controlled along with change of the concentration of the exhaust fume, the both hands of people are liberated, the intelligence degree is high, and the exhaust fume extraction effect is good. Meanwhile, the air volume of the extractor hood is changed along with change of the exhaust fume amount, pollution of the exhaust fume to the exhaust fume probe is effectively reduced, the service life of the exhaust fume probe is prolonged, and the pursuit of customers for environment protection, noise reduction, energy conservation and intelligence is met.

The invention discloses a positioning method and a device of a multimode GNSS system, a storage medium and a receiver. The positioning method comprises the following steps: measuring a pseudo-range observation quantity based on the received satellite signal, and calculating a receiver clock difference of each positioning system in the multimode GNSS system; using the receiver clock difference of each positioning system to calculate the inter-system time delay between each positioning system during the measurement when the receiver clock difference of each positioning system is reliable; usingthe inter-system time delay as an observation quantity and combining the pseudo-range observation quantity to detect and exclude the abnormal satellite when the inter-system time delay is stable; andusing the pseudo-range observation quantity of the remaining satellites after excluding the abnormal satellite to obtain the position information of the receiver . According to the positioning methodof the multimode GNSS system, the positioning accuracy of the receiver can be improved in a severe environment.

The invention discloses a micro-channel tubular heat exchanger for dehumidification, which comprises an upper header, a lower header and a heat exchange tube, wherein the heat exchange tube is arranged between the upper header and the lower header and communicated with the inner chambers of the upper header and the lower header; the heat exchange tube is arranged perpendicular to the upper header and the lower header and comprises more than one oblate tube, and more than one refrigerant flow channel is arranged in the inner chamber of each oblate tube; and the bottom wall surface of the upper header and the upper wall surface of the lower header are provided with mounting holes of the oblate tubes. The invention also discloses a dehumidifier, and the micro-channel tubular heat exchanger for dehumidification is arranged in the inner chamber of the body of the dehumidifier. Because of not adopting fins as heat exchange components, the micro-channel tubular heat exchanger can be used to improve the discharge effect of condensate water by using the advantage that the micro-channel tubular heat exchanger is beneficial to water draining, thereby improving the performance of the dehumidifier and significantly reducing the production cost at the same time.

The invention discloses a mining borehole radar advanced water detecting forecasting device. A signal output end of a radar wave signal transmitting module is connected with a signal input end of a transmitting antenna, and a signal input end of a radar wave signal receiving module is connected with a signal output end of a receiving antenna. The communication end of the radar wave signal transmitting module and the communication end of the radar wave signal receiving module are respectively connected with a signal transmitting communication end and a signal receiving communication end of a single-chip microcomputer. A communication end of a memory and a communication end of a three-dimensional electronic compass are respectively connected with the data storage communication end and the compass data communication end of the single-chip microcomputer. The data communication end of the single-chip microcomputer is connected with a data communication end of an on-site host by a probe network interface and a network cable. The eutrophic water, the water diversion channel, and other harmful geological bodies around the drilled hole can be detected, and the fine and effective detection forecast can be carried out.

The invention discloses a mechanical ventilation device and method for an underground stereo garage. The device comprises externally-hung exhausting shafts arranged on the overall two sides of the underground stereo garage and a ground garage and exhaust fans arranged in the externally-hung exhausting shafts. A garage bottom air duct communicated with the externally-hung exhausting shafts on the two sides is arranged at the bottom of the underground stereo garage. The portions, opposite to the ground garage, of the externally-hung exhausting shafts are provided with ground air outlets. Under the effect of the exhaust fans, outdoor air flows through the ground garage into the underground stereo garage, and after reaching the garage bottom air duct, the air flows into the externally-hung exhausting shafts and is exhausted through the ground air outlets. By the adoption of the device and method, under the automobile taking and parking working condition or the automobile taking and parking waiting working condition, the peculiar smell in the underground stereo garage can be effectively diluted and exhausted rapidly, the influences caused by harmful gas in the underground stereo garage on persons going in and out of the underground stereo garage can be effectively reduced, and the environment temperature of equipment such as transformers in the underground stereo garage is remarkably reduced.

The invention discloses an underground stereo parking garage and a natural ventilation method thereof. The garage comprises the underground stereo parking garage, a ground parking room and an underground stereo parking garage mechanical ventilation device, wherein the ground parking room is arranged above the underground stereo parking garage; a vehicle inlet and a vehicle outlet are formed in the ground parking room; the underground stereo parking garage mechanical ventilation device comprises externally hung exhaust well channels arranged on the two sides of the integral body of the underground stereo parking garage and the ground parking room, and exhaust fans arranged inside the externally hung exhaust well channels; a garage bottom air flue communicated with the externally hung exhaust well channels on the two sides is arranged at the bottom of the underground stereo parking garage; a ground air outlet is formed in the position, relative to the ground parking room, of each of the externally hung exhaust well channels. According to the underground stereo parking garage and the natural ventilation method thereof, the peculiar smell of the underground stereo parking garage can be effectively and quickly diluted and removed no matter in the vehicle taking-out and placing-in condition and the condition that users wait for taking out and placing in the vehicles, and the environment temperature of equipment such as a transformer inside the underground stereo parking garage is remarkably decreased.

The invention provides a wafer holding device in a vacuum prewet cavity. The device comprises a cavity cover arranged at the top of the prewet cavity, a gasket is connected with the bottom of the cavity cover, and the cavity cover is obliquely arranged and forms an included relative to the horizontal plane. A plurality of hanging pillars are connected to the bottom of the gasket, the bottom of each hanging pillar is bent inwards, and all the hanging pillars form a wafer placing portion used for bearing wafers; Further, the bottoms of the hanging pillars are bent inwards to form bottom stairs, second stairs which are retracted relative to the bottom stairs are arranged on the bottom stairs, pillar bodies are arranged above the second stairs, and the bottom stairs of all the hanging pillars form the wafer placing portion together. Furthermore, the number of the hanging pillars is three, the hanging pillars are evenly connected to the same circumference of the gasket, the inner side walls of the bottom stairs of the hanging pillars are respectively in an arc shape and are on the same circumferential surface, the inner side walls of the second stairs of the hanging pillars are respectively in an arc shape, and the inner side walls of the pillar bodies of the hanging pillars are respectively in an arc shape. The wafer holding device in the vacuum prewet cavity is reasonable in design structure, and the wafers can be conveniently placed into or remove out of the device manually or automatically.

The invention discloses an underground stereo garage natural ventilation method. The underground stereo garage natural ventilation method includes that a ground parking house is arranged above an underground stereo garage, a garage outer side ventilating duct and a garage bottom ventilating duct are respectively arranged the outer side of the periphery of the underground stereo garage and below the underground stereo garage, a ground parking house outer side ventilating duct communicated with the garage outer side ventilating duct is arranged on the outer side of the periphery of the ground parking house, a top natural ventilation port is formed in the top of the ground parking house, a plurality of inner side natural ventilation openings and a plurality of outer side natural ventilation openings are respectively formed in an outer wall and an inner wall of the ground garage outer side ventilating duct, and a plurality of underground parking space ventilation openings respectively corresponding to all underground parking units are formed in an inner wall of the garage outer side ventilating duct. The underground stereo garage natural ventilation method can achieve through type overall natural ventilation and air change for the underground stereo garage whether under parking and car fetching work status or under non-work status, effectively dilutes and excludes leaked oil gas odor and peculiar smells in the underground stereo garage, reduces device environment temperature in the underground stereo garage, and enhances smoke exclusion ability in a fire disaster.

The invention discloses a stuffing sand removing method for casting start of a continuous casting steel ladle. A movable flow guiding chute is arranged in a space between the lower side of a protective sleeve rising to a high position and the upper edge of an intermediate tank; the continuous casting steel ladle rises to a high position and directly rotates to a casting station from a molten steelreceiving station, after casting is prepared well and the protective sleeve is installed, the flow guiding chute moves to a work station under the protective sleeve, a sliding nozzle is opened, and stuffing sand flows into the flow guiding chute and is guided into an overflowing opening on the intermediate tank or directly guided into an overflowing tank outside the intermediate tank; after all the stuffing sand is guided away and the molten steel flows out, the flow guiding chute is moved to the waiting station, where the flow guiding chute does not influence hoisting of the intermediate tank, outside the intermediate tank, the molten steel flows into the intermediate tank, the continuous casting steel ladle descends to a low position, the protective sleeve dips into the molten steel inthe intermediate tank, and casting start is completed. The stuffing sand removing method for casting start of the continuous casting steel ladle does not need stop, does not influence the existing steel ladle casting start preparation procedure and does not prolong the overall casting start time, and a good removing effect is achieved.

The invention relates to the technical field of environmental protection equipment, in particular to an aeration air flotation machine, which is used for carrying out aeration and stirring treatment on sewage, reducing the volume of bubbles, increasing the number of the bubbles and increasing the impurity adsorption capacity, and meanwhile, improving the impurity removal effect and improving the practicability and reliability through repeated aeration and adsorption effects. The aeration air flotation machine comprises a box body, a support, a water inlet pipe, a water inlet valve, a first mounting plate, a first motor, a first speed reducer, a first gear, a first mounting block, a first transmission shaft, a second gear, two groups of third gears and two groups of second transmission shafts; a first cavity is formed in the box body, the top end of the first cavity is communicated with a through opening, the bottom end of the box body is connected with the top end of the support, a partition plate is arranged on the lower side of the support, and the side input end of the water inlet pipe is communicated with the lower side of the left end of the first cavity.

The claims encompass hard surface cleaner and hard surface treatment compositions containing particular ampholytic polymers which impart not only good residua! cleaning properties but in particular give fast drying properties to the cleaning compositions. The polymers are for example terpolymers formed from diallydialkyammonium chloride, anionic monomers and N,N Cdi-C1-C8 alkyl (meth)acrylamides.

The invention belongs to the medical field of biotechnology medicine and discloses a preparation method and clinical application of larix gmelini arabinogalactan composition. The larix gmelini arabinogalactan composition comprises, by weight, 3-6 parts of larix gmelini arabinogalactan, 0.5-3 parts of inulin and 0.4-3 parts of coconut nut powder. The preparation method includes the steps of S1, extracting the arabinogalactan from larix gmelini; S2, preparing defatted coconut powder; sterilizing the finished product. The preparation method the advantage of low cost, static ultra-high pressure room temperature treatment is simple and easy to implement, a great deal of energy can be saved, and objects are extracted completely and thoroughly; the larix gmelini arabinogalactan composition is provided to be effective in the treatment of diarrhea irritable bowel syndrome by volunteer clinical trials, and drug therapy with certain side effects is replaced by dietary therapy.

The invention discloses an underground stereo garage natural ventilation system. The underground stereo garage natural ventilation system is characterized in that a ground parking house is arranged above an underground stereo garage, a garage outer side ventilating duct and a garage bottom ventilating duct are respectively arranged on the outer side of the underground stereo garage and below the underground stereo garage, a ground parking house outer side ventilating duct communicated with the garage outer side ventilating duct is arranged on the outer side of the ground parking house, a top natural ventilation port is formed in the top of the ground parking house, a plurality of inner side natural ventilation openings and a plurality of outer side natural ventilation openings are respectively formed in an outer wall and an inner wall of the ground parking house outer side ventilating duct, and a plurality of underground parking space ventilation openings are respectively formed in an inner wall of the garage outer side ventilating duct from the top down. The underground stereo garage natural ventilation system can achieve through type overall natural ventilation and air change for the underground stereo garage whether under parking and car fetching work status or under non-work status, can effectively dilute and exclude peculiar smells in the underground stereo garage, significantly reduces environment temperature of devices of a transformer and the like in the underground stereo garage, and enhances smoke exclusion ability in a fire disaster.

The invention discloses an intelligent clamp and a control method thereof. The intelligent clamp comprises a clamp body (2) installed on a base (1), the clamp body (2) is provided with a supporting device (3) and a pressing device (4), and comprises a waste material collecting cavity (21) and a clamp control cabinet (23), the waste material collecting cavity (21) is provided with a smoke discharging assembly (5) which comprises a smoke discharging pipeline (51) and a lifting mechanism (52), the lower end of the smoke discharging pipeline (51) is inserted into an inner cavity of the waste material collecting cavity (21), the top end of the smoke discharging pipeline (51) can get close to a through hole (411) in the front end of a pressing plate (41) of the pressing device (4), and the through hole (411) corresponds to a cutting hole in position; the clamp control cabinet (23) is connected with the lifting mechanism (52) and an opening and closing mechanism (42) in the pressing device (4) through cables. With the intelligent clamp, in-place detection, clamping and place taking of the smoke discharging pipeline can be automatically realized for workpieces.

The invention relates to a curved saw wheel steamer which is provided with a round power wheel, wherein the center of the power wheel is fixedly matched with a wheel shaft, the power wheel is pivoted in the outer casing, and the circumference of the outer casing is provided with a steam inlet port and a steam discharge port, wherein one end of the wheel shaft passes through the center of one side of the outer casing, and a torque is output outwards through the rotation of the end; the middle part of the external part of the power wheel is provided with a plurality of curved concave and convex saw teeth, when the power wheel rotates under the action of steam, the front concave curved surfaces of the curved concave and convex saw teeth apply work under the momentum of the steam, and the back convex curved surfaces of the curved concave and convex saw teeth can reduce the drag produced by steam discharge after work application. The curved saw wheel steamer can still obtain high driving force under the driving of low-pressure steam, and has high power-generating efficiency.

The invention relates to the field of chemical industry and particularly relates to a carbon tetrafluoride extraction method and device. The carbon tetrafluoride extraction method comprises the following steps of: A, rectifying carbon tetrafluoride containing impurities; B, extracting the rectified carbon tetrafluoride and light components in the step A, so as to remove the light components and recycle the carbon tetrafluoride; and rectifying the rectified carbon tetrafluoride and heavy components in the step A, so as to obtain the carbon tetrafluoride; and C, collecting the rectified carbon tetrafluoride in the step B, wherein all rectifying temperatures in the step A and the step B range from below 50 to below 130 DEG C, and rectifying pressure in the step A and the step B ranges from 1mPa to 5 mPa. The carbon tetrafluoride extraction device comprises extraction and rectification equipment, extraction and recycling equipment, rectification equipment and collection equipment. According to the carbon tetrafluoride extraction method and device disclosed by the invention, the yield is improved by using an extraction absorption recycling method; and meanwhile, the rectifying temperatures (replacing the rectification with a temperature of below 180 DEG C by the rectification with a temperature of below 80 DEG C) are improved by using the extraction and rectification method. so that the energy consumption can be reduced.

The invention discloses a ball screw dustproof device which is assembled on the end face of a screw cap, and the invention orderly comprises an absorbing part, an oil scraper slice and a wiping device. The absorbing part relates to materials which can absorb liquid, and the oil scraper slice uses an oil scraper part to contact with the surface of the screw. The wiping device is provided with a tooth wiping part which is correspondingly meshed with the surface of the screw, and in addition, protuberaces are arranged between the wiping device and the oil scraper slice to cause a radial through hole to be formed by the segmentation between the wiping device and the oil scraper slice. The invention has good resistance and exclusion effects for powdered scraps and liquid, prevents the lubricating liquid from running off from the screw cap, keeps the lubricating liquid and absorbs micro cutting liquid which passes through the oil scraper slice.

The invention discloses a preparation method of lithium bis (fluorosulfonyl) imide. The preparation method comprises the following steps: (a) condensation reaction; (b) fluorination reaction; and (c) lithiation reaction. The method is short in process route, mild in process condition, simple in reaction system, easy to operate and control and high in reaction conversion rate, ensures high quality, high yield and high purity of the product, is green and environment-friendly, and is suitable for industrial production.

The invention belongs to the field of medicine, and in particular relates to application of Jinbei oral liquid in anti-virus aspect. The Jinbei oral liquid has an inhibitory effect on RSV and H1N1; the main mechanism of the antiviral action is to block the adhesion of viruses, that is, to play a preventive role, so that the preventive medication effect is better; the number and harm of the virusesduring the incubation period are not very large, so that the killing and elimination of the viruses are better facilitated, and the effect of getting twofold results with half the effort is achieved.

The invention discloses an exhaust noise reduction device capable of effectively reducing oil smoke pollution. The device is characterized in that the space is reasonably utilized, the external decoration of the building is kept, and the service life of a noise absorbing device can be prolonged. The device comprises a ventilation pipeline, a fan, an air filter and the noise absorbing device for absorbing noise. The noise absorbing device and the air filter are arranged in different planes, a flow guide oil collection area with a flow guide piece is arranged between the noise absorbing device and the air filter, so that the removal capability of the exhaust noise absorbing device on oil stains in the waste air is greatly improved; and meanwhile, a silencer in the absorbing device also adopts further oil prevention and pollution discharge improvement, the oil removal capability is further improved, the pollution of the oil stains to the silencer is reduced, and the noise absorbing function of the silencer is avoided. A ventilating duct is L-shaped, so that the building external space can be reasonably utilized, the layout of the ventilating duct can be ensured when the ventilating duct extends out of the building. Due to the improvement of the oil removal capacity, the service life of the silencer in the exhaust noise absorbing device is greatly prolonged.

The invention discloses an all-around monitor camera. The camera comprises a base, a motor and a telescopic rod are arranged on the base; a plurality of vertical chutes is peripherally arranged on the telescopic rod, and each chute is slidingly connected with a camera body capable of forming a ring; a limiting slot is arranged on each chute, a limiting stopper is arranged in the limiting slot, and the limiting stopper is electrically connected with a first controller; triangular guide tables and a sound receiver are arranged on the camera body; hard guide plates are respectively hinged at two sides of each triangular guide table, and an elastic plate is arranged between the guide plates of two adjacent triangular guide tables; a first spring slot and a second spring slot are arranged at two sides of the triangular guide table; a first spring is arranged between the first spring slot and an elastic plate, a second spring is arranged in the second spring slot, and one end of the second spring far away from the second spring slot is opposite to the elastic plate; the height of the second spring is greater than the height of the first spring. The scheme disclosed by the invention mainly solves a problem that the traditional single monitor camera has blind area.

The invention provides an application of bifidobacterium lactis JYBR-190 in a product for removing heavy metals in a body. The Bifidobacterium lactis JYBR-190 is preserved in the China General Microbiological Culture Collection Center (CGMCC) on July 8, 2019, the address is No.3, yard 1, Beichen West Road, Chaoyang District, Beijing, the postal code is 100101, and the preservation number is CGMCC NO.18092. The strain JYBR-190 belongs to probiotics and has the advantages of high efficiency, safety and no toxic or side effect when being applied to elimination of vivotoxin by adjusting the balance of human flora.

Provided is a precoated fin material for heat exchangers that is capable of: preventing the formation of frost as soon as possible during operation of a heater; under conditions where condensation is likely to form on a fin surface, quickly removing water droplets by causing the droplets of condensed water to contact a hydrophilic membrane; and configuring a fin structure able to maintain a favorable heat exchange function without increasing ventilation resistance. Further provided is a heat exchanger provided with such a fin structure. The precoated fin material for heat exchangers is provided with: a fin substrate formed from an aluminum plate; a cross-linked water-repellent membrane having a frost-suppressing effect, provided on one surface of the fin substrate, and formed of an aqueous water-repellent coating composition containing prescribed proportions of a resin (A) having a fluorine-atom-containing group, a denatured epoxy resin (B) containing a quaternary ammonium base, and an amino resin (C); and a hydrophilic membrane having a condensation-removing effect and provided on the other surface of the fin substrate. The heat exchanger is provided with a fin structure in which the water-repellent surface having the frost-suppressing effect and the hydrophilic surface having the condensation-removing effect are opposite one another.