131results about How to "Achieve exclusion" patented technology

The invention discloses a complex synchronous ultrasonic vibration micro-electrolytic machining method. A micro pressure adjustment device is used to keep the micro pressure contact of workpieces with the micro cathode; a micro displacement laser sensor is used for rapid dynamic measurement of the location of the ultrasonic vibrations, and to convert the vibrations into electrical signals carrying ultrasonic frequencies, phases and amplitudes, then the signals are transmitted to a chopper circuit for processing and conversion to produce chopping signals to turn on and shut off the electrolytic power source, thus achieving the synchronization of the electrolytic electrification and ultrasonic vibration of the cathode; a current sensor converts electrolytic signals into voltage signals, which are displayed, measured and storage by a digital storage oscillograph and then are transmitted to a control computer for automatic adjustment of the ultrasonic parameters and the electrical parameter. The method reasonably combines micro electrolysis with ultrasonic vibration in synchronization and in the same frequency, and eliminates passivation of the electrolysis through the function of ultrasonic vibration, thus improving accuracy of the machining and the quality of the surface and reducing the cost; and the invention can achieve micro machining of micro-structures of any type.

The invention discloses a forward-looking radar imaging sea-surface target key point detection and recognition method. The method includes the steps that radar echo data are quantized into a gray scale image; a region of interest is extracted from the gray scale image, partition is performed, and a target region partition image is obtained; the radar echo data and the region of interest of the image are used, and a target region peak point information matrix is obtained; information merging is conducted on the target region partition image and the target region peak point information matrix, the number K of peak points in a target region in a merging result is obtained through counting, the previous K peak points are selected and serve as target effective peak points and form a target effective peak point image in a binaryzation mode, target axial features are extracted, and a target position is determined; the center of gravity of target energy is calculated and serves as the target key point. According to forward-looking radar target features, multiple mode identification methods are used comprehensively, the inherent features of a target can be reserved, meanwhile interference factors such as artifacts and side lobes can be restrained, and the recognition accuracy and the positioning precision of radar imaging sea surface target key points are improved.

The invention discloses a packet forwarding method and device in a virtualized network as well as the virtualized network. The packet forwarding method comprises the following steps: a non-unicast Ethernet packet issued by CB (control bridge) equipment is received; an extended port serving as an egress port is searched according to the source ECID (E-Channel ID) of the non-unicast Ethernet packet; whether the extended port serving as the egress port has a aggregation relation with an extended port corresponding to the source ECID is judged according to the aggregation relation configuration information of the source ECID of the non-unicast Ethernet packet and the extended port of PE (port extender) equipment; if the aggregation relation exists, the extended port serving as the egress port is eliminated from a forwarding list. The problem about source elimination for the extended ports in an aggregation group among cross-user equipment can be solved.

The invention provides a digitalized coal yard system based on Internet of Things and an artificial intelligence system, relates to the technical field of fuel management, digitalized factories and power generation, and particularly relates to a digitalized management system of a coal yard. The method is based on the Internet of Things. The invention discloses a digital coal yard system of an artificial intelligence system. Digitization and intelligentization of coal yard and fire coal data are achieved by means of an artificial intelligence system, coal quality test equipment and entrance detection equipment are combined by means of coal yard related equipment and an information acquisition intelligent terminal, fire coal digital management is achieved, a data reference basis is providedfor coal blending combustion and fire coal planning, and actual economic benefits are brought to enterprises. According to the invention, a management chain from entry to evaluation is required to beestablished, and closed-loop management of fuel is realized, so that a coal yard management platform and a coal-fired data center are provided on the basis of an overall scheme architecture, and digitalization, visualization and intelligentization of coal yard management of power generation enterprises are realized through construction of the coal yard management platform and the coal-fired data center.

The present invention belongs to the production technical field of the oxid transparent ceramics, and relates to a hyper-gravity assistant non-balancing method for producing the aluminia-base transparent ceramic material (such as the aluminum oxide, yttrium aluminium garnet, etc.), which comprises the raw materials by weight (based on the ultra-fine aluminum powder): 10 to 50 portions of ultra-fine aluminum powder, 10 to 80 portions of pure-metal-analysis oxid powder, 0 to 35 portions of pure-rare-earth-analysis oxid powder aid, 0 to 10 portions of pure-alkali-soil-analysis metal oxid powder aid, 0 to 5 portions of pure non-metal oxid powder aid and 0 to 10 portions of pure fluorid powder aid. The raw materials are put into a clean grinding machine to be adequately grinded and mixed, and then are loaded into a hyper-gravity combustion synthesis device to synthesize the aluminum-oxide-base ceramic-block material that is cut, grinded and polished to be the aluminum-oxide-base transparent ceramic material with bright and smooth surface. The density of the transparent ceramic block is about 96 percent, and the transmittance is intermediate at the range from 10 percent to 60 percent.

The invention discloses a sensitivity matrix-based distribution network topology identification and line parameter identification method. Measurement data are used for sensitivity matrix solution, estimation on the sensitivity matrix through the data is realized, the method is different from the traditional method of firstly acquiring the topology relationship and the line parameters and then calculating the sensitivity matrix, and network topology identification and line parameter identification are realized based on the sensitivity matrix. In combination of a correlation method, initial feeder allocation under multiple feeders and exclusion of irrelevant nodes outside the network are realized.

The invention provides a leachate guide and discharge device for a garbage landfill gas collecting well. The leachate guide and discharge device comprises a water collecting pipe, a compressed air pipe, an exhaust pipe, a drainage pipe and a guide and discharge mechanism, wherein the water collecting pipe is provided with a top plate and a bottom plate, the roughly central position of the top plate is provided with a hole, and the roughly central position of the bottom plate is provided with a hole provided with a check valve; the compressed air pipe is connected with an air inlet valve passing through the top plate; the exhaust pipe is connected with an exhaust valve passing through the top plate; the drainage pipe passes through the interior of the water collecting pipe through the hole of the top plate; and the guide and discharge mechanism is positioned in the water collecting pipe and used for controlling the check valve according to the height of the water level in the water collecting pipe to open or close the hole in the bottom plate and open or close the air inlet valve and the exhaust valve. Through the leachate guide and discharge device, the leachate of a landfill is guided and discharged in a mechanical mode by using the buoyancy of water, so that the collection of the landfill gas and the guide and discharge efficiency of the leachate can be effectively improved, the automation degree is improved, the complexity of the process is reduced, and the cost is reduced.

The invention discloses a phthalocyanine compound synthesizer. The phthalocyanine compound synthesizer comprises a first reaction kettle, a first condenser, a second reaction kettle and a second condenser, wherein the first reaction kettle is communicated with the second reaction kettle by a first material conveying tube; a first gas inlet, a first gas outlet, a first solvent reflux opening and a first water outlet are formed on the first condenser; the first reaction kettle is communicated with the first gas inlet by a first mixed gas conveying tube; the first solvent reflux opening is communicated with the first reaction kettle by the first solvent reflux tube; a second gas inlet, a second gas outlet, a second solvent reflux opening and a second water outlet are formed on the second condenser; the second reaction kettle is communicated with the second gas inlet by the second mixed gas conveying tube; the second solvent reflux opening is communicated with the second reaction kettle by the second solvent reflux tube; and the second gas outlet is communicated with the first reaction kettle by a third mixed gas conveying tube. The phthalocyanine compound synthesizer disclosed by the invention effectively controls generated moisture, improves ammonia gas yield, recycles a carrier solvent and ensures safety and continuity of operation.

The invention discloses a collaborative correction information screening method for wireless sensor network cooperative positioning, belonging to the field of positioning navigation. The method includes the following steps: (1) initializing the location probability distribution of all nodes and anchor points; (2) enabling all nodes to predict distribution functions of their own locations accordingto their own motion states; (3) enabling each node to be connected to other nodes through a network, and enabling different nodes to exchange positioning data with each other; (4) enabling the adjacent nodes to perform ranging by radio and visual means, and calculating collaborative correction information between the nodes; (5) calculating the contribution degree of all the collaborative information, performing priority ordering on the collaborative correction information according to the size of contribution degree, and eliminating the information with low contribution degree; (6) calculating the edge posterior probability of the node i at time t; and (7) returning to the step (4), and performing iterative calculation until the location information formula (as shown in the original specification) converges. The scheme of the invention has higher real-time performance when the number of the nodes in the network is large and the range of location estimation is large.

The invention discloses a CIP (Clean in Place) cleaning method. The CIP cleaning method comprises the following steps of (1) opening CIP cleaning equipment, pre-flushing equipment to be cleaned with a solution in a pre-flushing tank, wherein the pre-flushing solution is directly drained, observing the turbidity the pre-flushing solution at a drainage opening, and when the solution does not have obvious dirty substances, stopping pre-flushing; (2) performing caustic washing on the equipment to be cleaned with an alkali solution in a caustic washing tank; and (3) after the caustic washing is completed, flushing the equipment with clean water, and enabling a solution obtained by flushing with the clean water to circulate to the pre-flushing tank for standby application. According to the CIP cleaning method disclosed by the invention, the pre-flushing solution in the flushing process is not recovered circularly, and is drained directly, most of dirty substances need to be removed through flushing with the pre-flushing solution, and the pre-flushing solution is directly drained, so that a good pre-flushing effect can be achieved, and the pre-flushing efficiency is improved.

The invention provides a biological experiment test tube batch sterilization device. The device comprises an upper box body and a lower box body, a rotary washing device, an ultrasonic treatment device, a high-pressure steam treatment device and a supporting table adjusting device are arranged in the box body, the high-pressure steam treatment device and the supporting table adjusting device are used for adjusting the position of the test tube in an up-and-down and rotating manner, and the rotary washing device rotates at the upper part of the test tube and is used for cleaning the test tube together with the ultrasonic treatment device on the same axis. By means of the rotary washing device arranged in the device, the test tube opening can be effectively cleaned, meanwhile, the action effect of the ultrasonic treatment device is enhanced by washing water stirred in the test tube, the supporting table adjusting device is used for moving the test tube, so that a plurality of sets of cleaning equipment are cooperatively used, and the effect is improved. The device has the advantages that the size is small, the cleaning effect is better, the test tube capable of effectively cleaning the complex biological solute, and meanwhile, the technical problems that the test tube is poor in cleaning and disinfecting effects and the like are avoided.

The embodiment of the invention provides a method, device and terminal equipment for entering a debugging mode and relates to the technical field of terminals. The method comprises the steps that an operation of a key of the terminal equipment is detected; and the debugging mode of the terminal equipment is started when the detection result shows that the operation of the key of the terminal equipment is a preset operation. The method, device and terminal equipment for entering the debugging mode provided by the embodiment of the invention are characterized in that the operation of the key of the terminal equipment is detected; and the debugging mode of the terminal equipment is started when the detection result shows that the operation of the key of the terminal equipment is the preset operation. In this way, when the terminal equipment is broken down and halted, the debugging mode can be started to eliminate faults on the premise that a current fault site is not damaged.

The invention discloses a composite encapsulating material with high heat conduction activity and a preparation method thereof, and belongs to the field of metal based composite materials. The composite material consists of SnAg4Ti4 alloy powder, aluminum powder and diamond particle reinforcer, wherein volume percentage of diamond particles is 50%-70%, volume percentage of aluminum powder is 25%-49%, and volume percentage of SnAg4Ti4T alloy powder is 1%-5%. A preparation method for the composite encapsulating material comprises the following steps: preparing active brazing filler metal SnAg4Ti4 alloy powder through a vacuum gas-atomization powdering furnace, mechanically mixing powder, and putting mixed powder into a discharge plasma sintering furnace to prepare a diamond / aluminum composite material. The sintered composite material is relatively good in interface bonding, is relatively high in compactness, has heat conductivity of 703W / m.K, has a thermal expansion coefficient reduced to 7.9*10<-6> / K, and has compactness of 97.8% or more. The preparation method is strong in operability, is simple in process, and can be used for the fields of electronic encapsulating and the like.

The invention provides an intelligent sound insulation and noise reduction automatic opening type aluminum alloy door and window, and relates to the technical field of constructional engineering. Theintelligent sound insulation and noise reduction automatic opening type aluminum alloy door and window solves the problem that residues in an auxiliary frame cannot be automatically removed through structural improvement when the door and window is closed; automatic detection of noise and automatic window closing after detection cannot be realized; and through structural improvement, water spraying and wiping of a fixed window body cannot be automatically achieved when the window is closed. The intelligent sound insulation and noise reduction automatic opening type aluminum alloy door and window comprises a sliding frame body, wherein a window body A is installed on the sliding frame body, a window body B is further connected to the sliding frame body in a sliding mode, a driving structureis further installed on the sliding frame body, slag discharging holes are formed in the frame body B in a rectangular array shape, and the slag discharging holes formed in the array shape form a slag discharging structure of the frame body B, and the slag discharging holes obliquely formed, and the forming angle is 60 degrees, so that residues in the frame body B can be removed by sliding the window body B.

The invention discloses a making process of pickled vegetables rich in active probiotics. The making process comprises the following steps of thoroughly cleaning vegetables, and then performing air-drying; putting mother water for pickled vegetables in a container for pickled vegetables; placing the air-dried vegetables in the container for pickled vegetables, and enabling water in the container for pickled vegetables to be just higher than the vegetables; inflating nitrogen into the container for pickled vegetables to enable the nitrogen to form an oxygen separation layer on the surface of the mother liquid for the pickled vegetables; loading probiotics into the container for pickled vegetables; and performing sealing operation, and fermenting the vegetables in the container for pickled vegetables. An open inflating manner is directly used, and only a nitrogen layer needs to be directly formed on the surface of the mother liquid for the pickled vegetables, so that separation of the oxygen in air is realized, and growth of oxygen consumption putrefying bacteria (mould, microzymes, bacillus and escherichia coli) can be prevented. Besides, the environment in the mother liquid for pickled vegetables is oxygen-free environment, the environment is particularly suitable for growth of the anaerobic probiotics, the probiotics are active microorganisms beneficial for hosts, and can generate precise healthy efficacy for intestinal tracts and reproductive systems of human bodies, so that the function of human bodies can be improved, and the making process can elaborate beneficial effects.

The invention relates to the field of air conditioning equipment, in particular to a self-cleaning air interchanger. A self-cleaning air ventilation device comprises a ventilation device body. The ventilation device body comprises an air suction and exhaust mechanism, a filtering mechanism and a dust collection mechanism which are communicated in sequence; by arranging the air draft impeller, the exhaust impeller, the first ratchet mechanism, the second ratchet mechanism, the filter cylinder, the guide cover, the guide cylinder, the collecting cylinder, the inner blocking ring, the outer blocking ring and the backflow air channel formed in the upper portion of the guide cylinder, the exhaust impeller is driven to rotate through reverse rotation of the driving motor, then reverse blowing is conducted on the filter cylinder, and therefore the filtering effect is improved. Dust is collected in a centralized manner through a guide cover, a guide cylinder and a collecting cylinder; in addition, the air flow blown in the reverse direction is guided out of the room through the backflow air channel, the air flow is exhausted, the continuous dust collection effect is guaranteed, the filter cartridge is cleaned, the equipment maintenance period is prolonged, and use is convenient.

The invention discloses a direct current partial discharge source detecting and recognizing device. The direct current partial discharge source detecting and recognizing device comprises a band-pass filter, a high speed capture card and an industrial personal computer, is capable of realizing direct current partial discharge source detection, classification and mode recognition, and is applicable to transformer paper oil insulation partial discharge experiment. An analog front end of the device is provided with 40M simulation bandwidth, so that high-frequency component of partial discharge pulse signal is guaranteed to be correctly acquired; resolution of high-speed capture card is 10 bits, so that resolution and sensibility of the device during partial discharge pulse collection. The device is capable of recording partial discharge pulse waveform and happening moments to form pauls time sequence, adopting partial discharge pulse cluster rapid classifying technology to classify original pulse cluster into a plurality of auxiliary pulse clutter to abstract discharge fingerprint according to pulse waveform characteristics and at last utilizing fault characteristics data base to perform discharge type judgment on the auxiliary pulse clutter. The direct current partial discharge source detecting and recognizing device has typical characteristics functions such as external disturbance eliminating function, multiple partial discharge source separating function and partial discharge mode recognition function.

The invention discloses an energy-saving power-off protection control device for a water dispenser. The energy-saving power-off protection control device for the water dispenser structurally comprisesa water outlet head, two buttons, a groove, a movable door, a handle, a shell, a power-off protection device and supporting legs, wherein the water outlet head is arranged above the shell; the shelland the water outlet head are mechanically welded to form an integrated structure; the two buttons are positioned on the same horizontal line; the two buttons are equidistantly arranged in the centerof a front panel of the water outlet head; the groove is formed in the top of the shell, and is mechanically connected with a top panel of the shell; and the movable door is arranged in the center ofthe front panel of the shell. Under the combined action of a water drainage device, a gravitational driving device, a heating device and an automatic driving power-off device, a power supply of the water dispenser is switched off in time when water supply of the water dispenser is insufficient, and the circumstance that a heating line is burnt out to affect normal use of equipment is avoided.

The invention provides an automatic switchover shuttle valve which comprises a valve body and a valve element. The valve body is provided with a valve element mobile cavity. A first air inlet, a second air inlet and a first air outlet are formed in the sidewall of the valve element mobile cavity. The first air inlet and the second air inlet are oppositely arranged. The valve element is located in the valve element mobile cavity and is provided with a first extension arm pointing to the first air inlet and a second extension arm pointing to the second air inlet. A boss which protrudes outwards along the radial direction and is aligned with the first air outlet is arranged between the first extension arm and the second extension arm. Buffer sliding blocks are respectively arranged on the peripheries of the first extension arm and the second extension arm and can slide along the axis of the valve element. Through utilization of the buffer sliding blocks arranged on the peripheries of the extension arms, the automatic switchover shuttle valve can eliminate residual gas between the valve element and the valve body so that the valve element can be switched in place. Moreover, the automatic switchover shuttle valve is simple in structure, easy to realize and good in exhaust effects.

The invention discloses a layered porous material for adsorbing and separating allylene and propylene, which has periodic intra-layer rhombic pore channels and interlayer broken line type pore channels, is formed by metal ions M, inorganic anions A and organic ligands L through coordination bonds and supramolecular action, and has a structural general formula of ML2A, wherein the metal ion M is atleast one of Fe<2+>, Co<2+>, Ni<2+>, Cu<2+> and Zn<2+>, the inorganic anion A is at least one of TiF6<2->, GeF6< 2->, NbOF5<->, ZrF6<2-> and SnF6<2->, and the structural formula of the organic ligandL is shown in the specification, wherein R1 to R8 are independently selected from H, F, Cl, Br, I, CH3, NH2, OH or COOH respectively. The invention further discloses a method for adsorbing and separating allylene and propylene, the layered porous material is used as an adsorbent, the adsorbent is in contact with mixed gas containing allylene and propylene, allylene is selectively adsorbed, and separation of allylene and propylene is achieved.

An automatic rain and snow protective cover used for a handlebar and a saddle of a sharing bicycle comprises a rain and snow sensing system, a mechanical operation system, a protective cover system, apower system, a guaranteeing system, a controller and a support. The automatic rain and snow protective cover used for the handlebar and the saddle can accurately judge rainy and snowy weather in time and can automatically protect the handlebar and the saddle of the sharing bicycle on rainy and snowy days. The automatic rain and snow protective cover used for the handlebar and the saddle can effectively solve the problem that rain and snow remain on the surfaces of the handlebar and the saddle of the sharing bicycle after the rainy and snowy days, the surfaces of the handlebar and the saddleof the sharing bicycle are prevented from being stained by muddy water generated by rain and snow, normal use of the sharing bicycle is achieved, development of a green travel habit is further facilitated, and environment protection is facilitated.

The invention discloses a material grinding bin suitable for a roll cutting grinding mill. The material grinding bin comprises a bin body, a decompression chamber and an air pipe, wherein the bin body comprises a feeding pipe, a material bin, discharging pipes and U-shaped ring grooves; the feeding opening of the feeding pipe stretches out the side surface of the grinding bin body; the discharging opening of the feeding pipe is connected with the feeding opening of the material bin; the material bin is fixedly mounted on a rotating shaft; one or more discharging openings of the material bin are formed in the side surface of the material bin; the discharging openings of the material bin are fixedly connected with the discharging pipes; the discharging openings of the discharging pipes are connected with the U-shaped ring grooves; the material bin adopts a cylindrical structure; the discharging openings of the material bin are uniformly distributed in the side surface of the material bin, and are formed in the side surface of the material bin and near to the bottom surface of the material bin; the lower openings of the discharging openings of the material bin are the same as the bottom surface of the material bin in height. The discharging openings of the material bin are formed in the side surface of the material bin and near to the bottom surface of the material bin, and the openings of the discharging openings of the material bin are the same as the bottom surface of the material bin in height, so that all materials in the material bin can enter the U-shaped ring grooves, and the use is convenient.

The invention relates to an efficient foreign-body-proof electric generator. The electric generator comprises a ventilating duct, an impeller assembly, an induction motor assembly and an impurity-proof assembly. The impeller assembly is installed inside the ventilating duct and comprises an output shaft, and the output shaft is connected with the induction motor assembly. The impurity-proof assembly comprises a grid impeller, an annular fixing frame is arranged at the edge of the grid impeller, the grid impeller is arranged on an air inlet of the ventilating duct through a thin-wall bearing in a rotary mode, the thin-wall bearing is arranged on the periphery of the fixing frame, the grid impeller comprises a plurality of grid pieces which are arranged relative to the axis of the output shaft of the impeller assembly to form an annular array and an annular isolation net is arranged from the fixing frame of the grid impeller to the middles of the grid pieces; the bending direction of each grid piece is opposite to the bending direction of each blade in the impeller assembly, the isolation net comprises a plurality of isolating rings which are fixed to the grid pieces with the axis of the output shaft as the circle center, and the diameters of the isolating rings gradually increase from the center of the grid impeller to the outside.

A maintainable lithium ion battery is disclosed, which includes a housing, electrode post, negative plate, a positive electrode sheet, a separator and an electrolyte, wherein at least one of the electrode posts is provided with an exhaust hole conductive to the inside of the battery in the axial direction of the column thereof, the outer surface of the electrode post is provided with a screw thread, and the electrode post is connected with an outer nut which is matched and screwed with the electrode post, and the outer nut is used as a connection terminal of the lithium ion battery; A seal gasket is also arranged between the outer nut and the electrode post. The invention further discloses a maintenance method of a maintainable lithium ion battery. The lithium ion battery provided by the invention and the maintenance method thereof not only effectively prolong the service life of the lithium ion battery, but also greatly reduce the calendar life cost of the battery, so that the lithiumion battery industry realizes the benign development, and at the same time, the real cascade utilization in the technical field of the lithium ion battery is realized.

The invention provides a remote fault solving system and method for production equipment, and the system comprises a local data collection unit which is used for collecting the point position data andonsite scene of the production equipment, and transmitting the point position data and onsite scene to a data processing unit; the data processing unit is used for obtaining the operation state of the production equipment according to the point position data and sending the point position data, the operation state and the field scene to the remote control unit; and the remote control unit is usedfor displaying the point location data, the operation state and the field scene and remotely controlling the production equipment so as to carry out online remote operation and debugging on the production equipment and realize remote troubleshooting.

The invention discloses a material grinding bin suitable for a roller cutting attritor. The material grinding bin comprises a bin body, a pressure reducing chamber and a wind pipe, wherein a discharge port of a feed pipe in the bin body is connected with a feed port of a bin; the bin is fixed on a rotating shaft; at least one bin discharge port is formed in the side surface of the bin, and is fixedly connected with a discharge pipe; a discharge port of the discharge pipe is connected with a U-shaped annular groove; the bin adopts a cylindrical structure with regularly polygonal top and bottom; all side surfaces of the bin are rectangular; the bin discharge ports are respectively positioned on all the rectangular side surfaces of the bin; a cone with the bottom surface of the bin as the bottom surface is arranged in the bin, and is lower than the bin; and preferentially, the peak of the cone is positioned in the body center of the bin. One cone is arranged in the bin for accelerating the material gliding speed to prevent the material accumulation caused by the material gliding not in time; and after the blanking is stopped, materials in the bin can totally enter the U-shaped annular groove without needing manual cleaning.

The invention discloses a light alloy die-casting method, which specifically includes the following steps: S1 raw material preparation: place the light alloy in a heating furnace under a vacuum environment and continue heating, the temperature of the heating furnace is 700-750°C until the light alloy slowly Until it melts into molten metal; S2 aluminum powder addition: under vacuum environment, add a certain amount of aluminum powder to the molten metal prepared in S1, and then place the molten metal in a heating furnace to heat, during the heating process and through the graphite rod to continuously Stir mechanically for 1-2 hours; S3 degassing: inert gas is introduced into the molten metal obtained in S2 in a vacuum environment, and the molten metal is continuously affected by ultrasonic waves. The invention adopts ultrasonic wave and gas blowing to act on the molten metal, so that the air bubble exclusion rate in the molten metal can reach more than 95%, avoiding the influence of air bubbles on the toughness of die castings, and using inert gas to pressurize the inside of the mold cavity during injection molding , so that the molten metal can fill the cavity and enhance the flatness of its side.

The invention discloses a kitchen sewage multi-stage treatment process, and belongs to the technical field of sewage treatment. The treatment process comprises the following steps: performing three-phase separation in a regulating tank; carrying out primary anaerobic high-temperature fermentation; carrying out secondary anaerobic medium-temperature fermentation; precipitating in a precipitation tank; performing a normal-temperature biochemical treatment in a biochemical pool; performing a sedimentation treatment in a secondary sedimentation tank; and discharging processed water into a clean water tank. The heat in the sewage treatment front process is fully utilized; energy is fully and efficiently utilized in a gradient mode, organic matters in sewage are degraded step by step, and the process can adapt to the characteristics of low pH, high SS, high COD, high oil content and the like of kitchen sewage, has the characteristics of high energy utilization rate, high biogas yield, high COD removal rate, stable treatment effect, low operation and maintenance cost and the like, can realize up-to-standard discharge of the kitchen sewage, and is suitable for popularization and application in the field of kitchen sewage treatment.

The invention discloses a three-dimensional fluorescence spectrum peak searching method, which mainly solves the problems of long time consumption, low efficiency, poor effect and the like of the existing manual visual inspection peak searching method. The method comprises the following steps of (Step 1) firstly performing standardized processing on a three-dimensional fluorescence spectrum data matrix X; (Step 2) generating a contour map by using the three-dimensional fluorescence spectrum subjected to standardized processing; (Step 3) selecting different peak searching modes for processing the contour map by a user according to requirements; (Step 4) determining a peak searching region according to the selected peak searching mode, and performing peak searching; and (Step 5) comparing asearched peak with a recorded peak according to the software processing program of the peak searching method; and recording a non-repeated new peak, and completing the peak searching until all peaks are searched. By using the scheme, the method provided by the invention achieves the goals of short time consumption and high precision, and has high practical values and popularization values.