40results about How to "Separable" patented technology

In present ivnention,l soaking method is used to make a hydrophilic polymer containing cation or amine group be adsorbed on the polymer membrane containing anion-active centre, then enzyme preparation or other reagent containing separation or catalytic activity are used to make treatment so as to form immobilized enzyme membrane. Said invention utilizes proper crosslinking reaction to raise stability of immobilized membrane. Said invention can adopt similar method to fix the substance with separation and catalytic activity on the polymer membrane to prepare active membrane with separation and synthesis functions.

The invention provides a preparation method of a porous boron carbonitride nanosheet and a preparation method of a porous boron nitride nanosheet. The preparation method of the porous boron carbonitride nanosheet comprises the steps of mixing a boron source and a solvent, performing heating and dissolution, adding a carbonitride source, placing in a closed reaction vessel, performing heating and stirring, evaporating water, and performing grinding and heat treatment in inert gas to obtain the porous boron carbonitride nanosheet. The preparation method of the porous boron nitride nanosheet comprises the steps of performing heat treatment on the porous boron carbonitride nanosheet in ammonia, and cooling to a room temperature in inert gas to obtain the porous boron nitride nanosheet. The porous boron carbonitride nanosheet and the porous boron nitride nanosheet are applied to an absorbing material which has higher CO2 absorbing performance, separation performance and cyclic absorbing performance.

The invention discloses a pressure-control two-way self-cleaning slit-type sewage separation system. A filtering piece (25) and a base (22) are connected, a scraper (26) and an impeller (28) are connected, the filtering piece (25) and the scraper (26) are stacked in a spaced mode, a motor shaft (27) is connected with the impeller (28), a water outlet cylinder (21), a speed reduction motor (15) and the base (22) are connected, a one-way valve (18) is disposed in the water outlet cylinder (21), a spring (19) is disposed between the one-way valve (18) and the water outlet cylinder (21), a three-way electromagnetic valve (8) is connected with a water outlet of the water outlet cylinder (21) and an outlet of a water pump (7) through water pipes (9) respectively, a water inlet of the water pump (7) extends into separation water (3) through a water pipe (9), a position switch (16) is installed on the water outlet cylinder (21), and a pressure switch (40) is installed on a piston (4). The system is used for separating sewage in a sewage box of a sewer dredging vehicle, increasing sewage separation speed and improving sewage separation quality.

The invention discloses a preparation method of a pervaporation composite membrane filled with hydrophobically modified nano calcium carbonate. The preparation method of the pervaporation composite membrane filled with hydrophobically modified nano calcium carbonate comprises the following steps: (1) adding dried nano calcium carbonate into oleic acid, stirring for reacting, then repeatedly washing with hexane for removing excess oleic acid,, drying in vacuum, and grinding so as to obtain hydrophobically modified nano calcium carbonate; (2) mixing dried polyvinylidene fluoride with hydrophobically modified nano calcium carbonate, subsequently adding the mixture into dimethylacetamide, carrying out ultrasonic dispersion, stirring, filtering, standing and defoaming, and subsequently pouring the obtained liquid on a polyester non-woven fabric for scraping a membrane so as to obtain a modified polyvinylidene fluoride base membrane by using an immersion precipitation phase inversion method; and (3) dissolving polydimethylsiloxane in n-hexane, adding hydrophobically modified nano calcium carbonate, carrying out ultrasonic dispersion, adding a cross-linking agent and a catalyst, stirring for reacting, centrifuging and dedoaming, subsequently pouring the obtained liquid on the polyvinylidene fluoride base membrane for scraping the membrane, airing and drying the membrane in vacuum to prepare the pervaporation composite membrane. The composite membrane prepared by the method is simple in process and low in cost, and moreover, the selectivity and the flux of the composite membrane on alcohol are improved.

The invention provides a preparation method of an isocyanate modified polyether silicone oil nonionic emulsion and a product and application thereof. The method comprises the steps of synthesizing double-end containing hydrogen silicone oil, synthesizing double-end hydroxyl modified silicone oil, synthesizing isocyanate modified polyether silicone oil, adding a proper amount of water for emulsifying, performing co-emulsifying with cationic amino modified epoxy silicone oil, and performing compounding to prepare a carbon fiber precursor oil agent. The technical problems met during an addition reaction of polyether modified silicone oil and high molecular weight polyethylene glycol monoallyl ether through containing hydrogen silicone oil that the reaction is difficult, the yield is low, theseparation purification is hard, and the color is dark are solved, and meanwhile the problems that the storage stability of amino modified silicone oil in the weak acid water phase is poor, compounding with cationic amino modified epoxy silicone oil is performed to prepare the carbon fiber precursor oil agent, after oiling, the carbon fiber precursor is stuck to rollers in the high-temperature drying and rolling process are solved.

The invention discloses an open-cell type heat-conducting epoxy matrix composite porous material and a preparation method and an application of the porous material. The porous material is prepared from 20 to 40wt% of epoxy resin-heat conducting ceramic powder-modified amine pre-mixed solution and 80 to 60wt% of inorganic filler-aqueous suspension; the epoxy resin-heat conducting ceramic powder-modified amine pre-mixed solution is prepared from 100 parts by weight of epoxy resin, 3 to 30 parts by weight of heat conducting ceramic powder and 50 to 100 parts by weight of poly-oxypropylene polyether modified amine curing agent by pre-mixing for 3 to 10 minutes under a temperature of 20 to 35 DEG C. The porous material is of an open-cell structure, remarkable in air and water permeability, and outstanding in toughness and heat conductivity, and has a good application prospect in the ceramics field, the electronic field, the battery diaphragm field, the environmental protection field, the air purifying field, the chemicals field, the building field and other fields.

The invention provides P4VP-b-PMA (Az) block copolymer, a high-through hexagonal prism membrane with adjustable prism diameter and a preparation method of the membrane, wherein the P4VP-b-PMA (Az) liquid crystal block copolymer has a following structure, wherein m is 10-900, and n is 2-900. The liquid crystal block copolymer is synthesized through two-step ATRP process, and BCP membranes different in thickness are obtained by spin-coating and membrane forming, and high-through hexagonal prism membranes different in thickness and pore diameter may be obtained by annealing the BCP membranes in a solvent atmosphere; this membrane has great application value and advantages in pH response, photoresponse and high-performance ion channel fields.

The filter material for eliminating cigarette smoke is formed from tourmaline microcrystal, zeolite, far infrared zirconia powder and titania powder according to the mixing ratio of 60-65%:10-15%:10-15% and 15-20%. Its preparation process is as follows: firstly, cleaning tourmaline and zeolite respectively, drying and pulverizing to obtain tourmaline microcrystal and zeolite, mixing them according to the above-mentioned ratio, ball-grinding them to 100-120 meshes, heating at 450-500 deg.c for 3-4 hr, finally mixing the above-mentioned powder material, with plastics and foaming agent according to the ratio of 3:1:0.1, foaming so as to obtain the invented filter material microporous sponge body which not only can be used for elimianting cigarette smoke and cleaning air, but also can release lots of negative ions.

The invention discloses a preparation method and application of allyloxy-containing aromatic polyimide. The allyloxy-containing high polymer compound has a repeated structure unit of a formula I shownin the description. According to the preparation method, a diallyloxy diamine monomer is selected as a basic monomer, the basic monomer is copolycondensed with binary aromatic primary amine and quaternary anhydride according to a ratio, and thus a series of novel aromatic polyimide of different contents of allyloxy is prepared. Hydroxyl and allyl can be obtained from a prepared allyloxy-modifiedpolyimide film through claisen rearrangement. Due to the hydroxyl, the separation selectivity of the film upon gases can be improved, and the allyl can be used as a crosslinking reaction site to improve the plastification resistance of the film. Due to the novel molecular structure designing, a new generation of gas separation films with both separation and plastification resistance can be prepared.

The invention discloses a preparation method and applications of a polyelectrolyte nano particle / NaA molecular sieve composite film capable of being protonated, and belongs to the technical field of separation. The preparation method comprises following steps: 1, a NaA molecular sieve base film is treated with dopamine; 2, a cationic polyelectrolyte containing amino groups and an anionic polyelectrolyte containing sulfonic acid groups are subjected to blending so as to obtain polyelectrolyte nano particles capable of being protonated; 3, the polyelectrolyte nano particles capable of being protonated are dissolved in a diluted acid for uniform dispersion so as to obtain a polyelectrolyte nano particle solution of a certain concentration; and 4, NaA molecular sieve film obtained via pretreatment is immersed in a solution of the polyelectrolyte nano particles capable of being protonated, and drying is carried out so as to obtain a compact pervaporation composite film which can be used for dehydration of organic matters under acidic conditions and possesses excellent separation capacity and acid stability.

The invention discloses a hyperspectral anomaly detection method based on collaborative representation and anomaly elimination. The method is characterized by comprising the following steps of: removing abnormal pixels in a local background set by adopting an elimination method of fusing global abnormality and local abnormality; and calculating a linear representation coefficient and solving a residual image based on a hyperspectral anomaly detection algorithm of collaborative representation, and finally marking pixels of which the detection values are greater than a threshold value as abnormal points by setting the threshold value to obtain an abnormal target detection result. Compared with the prior art, the method has the advantages that the precision and detection precision of linear representation are improved, and the problems of window selection in a hyperspectral anomaly detection algorithm based on collaborative representation and background set pollution caused by abnormal pixels of double windows are effectively solved.

The invention discloses a detection method for malachite green in aquatic products. The detection method comprises experiment steps of preparing a magnetic molecularly imprinted polymer, establishinga method based on an aptamer and ferroferric oxide mimic enzyme catalysis and the like. According to the detection method, firstly, a dopamine polymerization method is used for preparing a malachite green (MG) magnetic molecularly imprinted polymer (MG-MMIPs); trace MG in a sample is adsorbed by utilizing the MG-MMIPs, so that the aims of enriching a target object and removing a complicated mediumare realized; then after enriched MG is desorbed, a detection method of the aptamer and ferroferric oxide mimic enzyme catalysis is used for detecting. The method has the sensitivity of 5 nmol L<-1>and the lowest detection limit reaches 3.6 nmol L<-1>. A specific experiment aiming at two structural analogues (including brilliant green and crystal violet) of MG and other bacteriostatic drugs (including sulfaguanidine, sulphanilamide, oxytetracycline hydrochloride and chloramphenicol) shows that the method has good selectivity in MG detection.

The invention discloses a portable WiFi virtual oscilloscope comprising a coupling circuit, a signal conditioning circuit, a triggering circuit, a STM32 single-chip microcomputer, a power supply, a WiFi emission module, and an Android client display end. On the basis of a common digital oscilloscope, in combination with the advantages of a current dominant operation system, and in virtue of a WiFi communication way, the digital oscilloscope is applied to an operating system Android platform and a characteristic of separating data acquisition and waveform display is achieved. An Android application program is designed as a display end to display waveforms, frequencies, and amplitudes, and can be used as a host computer to send trigger instructions to a slave computer. The slave computer mainly processes acquired electric signals on the basis of the internal A / D of the STM32 single-chip microcomputer, sends data via a serial port in virtue of the WiFi emission module. The Android client display end displays waveforms. The portable WiFi virtual oscilloscope enables people to conveniently research the change processes of various electric phenomena, provides measurement technical support at first time, achieves separation between a measuring end and an observation end and multi-user simultaneous measurement result observation and measurement control.

The invention relates to a closed cutting pliers head device of high-frequency bipolar closed cutting pliers. The device is characterized by comprising a first closed pliers head (1), a closed pliers head pin (2), a second closed pliers head (3), an insulating pliers head baffle piece (4), a pliers head push-and-pull bar (5), a cutter blade push-and-pull pipe (6), an external aluminum pipe (7) and a cutting blade (26). In the closed cutting pliers head device of the high-frequency bipolar closed cutting pliers, the operation of closing and cutting is separated, a high-frequency bipolar pliers head adopts a single-handle holding mode for open and close, saves labor, is comfortable, is provided with a locking device, is reliable in motion and is convenient to use. By adopting an independent cutting device, accurate cutting at the closing position of the pliers head is realized through hooking a trigger by a forefinger, and the depth of cutting is controllable. By arranging an insulating component at the position of the pliers head of the closed cutting pliers head device of the high-frequency bipolar closed cutting pliers, the closing of the pliers head and the cutting of the blade cannot be affected, effective insulation can be realized, the application of a high-frequency electrode is ensured, and the device is convenient to clean.

The invention discloses a separated shared pump base of a multistage centrifugal pump. The separated shared pump base comprises a base plate (1), a motor support plate (4), a transmission equipment support plate (6) and a pump base support plate (7), wherein a base plate (12) is mounted on the pump base support plate through fasteners (9), transverse rib plates (13) and longitudinal rib plates (14) are mounted on the base plate, and pump support blocks (11) are mounted at the tops of the transverse rib plates. The separated shared pump base has the advantages that during transportation, the centrifugal pump is placed on the pump base, and an extra central support rack is not needed; during maintenance, the whole base plate can be directly separated through lifting, separability and mobility are achieved, base plate cost and simple support cost during transportation are saved effectively, and transportation space occupation and maintenance time occupation are avoided; the pump base is especially suitable for the ultra-large-power centrifugal pump and applicable to the combined welding base plate of the multistage centrifugal pump in the petroleum and petrochemical industries.

The invention discloses wastewater recovery and secondary utilization equipment used for a chemical plant. A structure of the wastewater recovery and secondary utilization equipment used for the chemical plant comprises wastewater treatment equipment, handles, a supporting frame, a water discharge pipe, an electric controller and a water inlet pipe, wherein through a sedimentation chamber, first-step precipitation treatment is conducted on chemical wastewater, impurities in the chemical wastewater precipitate, then by means of a stopping screen board and a second filtering screen board, the impurities are isolated and filtered, through a particle collecting turbine, particle treatment is conducted on the wastewater in a filtering chamber, thus a water vapor biofilm obtains full exchange, organic matters in the wastewater are efficiently treated, moreover, by means of a sub-atmospheric pressure aeration mechanism, external oxygen is introduced into the wastewater, moreover, through backwater mechanisms, the wastewater is stirred, contact of organic matters, microorganisms and dissolved oxygen in the filtering chamber is enhanced, the organic matters in the wastewater is subjected tooxygenolysis, treatment of the chemical wastewater is improved, and the structure is low in cost and suitable for use and popularization.

The invention discloses a smashing process of a biomass fuel, and belongs to the field of processing of biomass fuels. In the preparation method, straws are treated in different physical and chemicalaspects by ultrasonic soaking and hot rolling pretreatment, grinding pre-crushing, half anerobic roasting secondary treatment and ultrafine secondary crushing, the compactness of the straws is improved favorably, filling operation of crushing is facilitated, meanwhile, the crushing efficiency is improved, finally, ultra-fine crushing is centrifugal knife type crushing, air flow is generated in a crushing process, particles in small fineness are separated from particles in large fineness under the centrifugal effect, meanwhile, the particles in large fineness can be secondarily crushed, doubleeffects of separating and crushing are achieved, the crushed particles are uniform, and in the whole crushing process, an effect of increasing heat of combustion and energy density of the prepared biomass fuel is achieved.

The invention relates to a cleaning system and a cleaning process for a heat exchange module in an air preheater. The cleaning system comprises a hanging bracket, a center support, a softening cylinder, a first ultrasonic cleaning unit, a second ultrasonic cleaning unit, a purging unit and a drying unit, wherein the softening cylinder, the first ultrasonic cleaning unit, the second ultrasonic cleaning unit, the purging unit and the drying unit are sequentially arranged around the center support; the hanging bracket comprises a walking mechanism, a first support, a cross beam and a second support which are fixedly connected in sequence, and the lower end of the second support is rotationally connected with the central support, so that the hanging bracket can do circular motion in the horizontal plane around the central axis of the central support; the softening cylinder, the first ultrasonic cleaning unit, the second ultrasonic cleaning unit, the purging unit and the drying unit are all located between the walking mechanism and the center support; and a lifting mechanism is arranged on the cross beam. The cleaning system is compact in structure and small in occupied area, and the cleaning efficiency of the air preheater can be effectively improved.

The invention discloses a preparation method of chlorine trifluoride and belongs to the field of fine chemical engineering. The method comprises the following steps: carrying out a bubbling reaction on liquid-phase chloride and fluorine gas at a certain temperature to obtain a product 1; then charging the product 1, a diluent gas and fluorine gas in a synthesis reactor, and reacting at a certain temperature to obtain a product 2; finally carrying out liquidation, lightweight material discharge and vaporization treatments on the product 2 to obtain chlorine trifluoride. The raw materials in the preparation method are low in price and easily available, thus avoiding the adoption of chlorine with high corrosion and high toxicity, improving safety during production, transportation and storage processes; moreover, the reactor is simple in structure and convenient for material charging and discharging; the reaction conversion rate is high; by-products can be easily separated; and the preparation method can be put into industrial production easily.

The invention discloses a preparation method of a resin material for patulin removal. The resin material is prepared from raw materials of hydroxyapatite, graphene, phenolic resin, polyvinyl nitrile,polyurethane, ethyl orthosilicate and the like; according to the invention, the hydroxyapatite and the graphene are selected to modify the phenolic resin to improve the mechanical properties of a resin matrix and prolong the service life of the resin matrix, then the modified phenolic resin is combined with molecularly imprinted nanomaterials, and then an imprinted locus matched with patulin molecules are formed by utilizing 4-hydroxy-indole as a functional monomer, so that the specific adsorption removal of the patulin is realized. The raw materials selected by the invention have no toxic orside effects on a human body, and have the characteristics of high strength, large adsorption amount, no secondary pollution and self-cleaning; and the preparation technology is simple, easy to operate, and suitable for large-scale use of juice production, feed processing and the like.

The invention discloses a preparation method of an arsenic removing adsorbent with effects of magnetic separation, photo-catalytic oxidation and adsorption. The preparation method adopts melamine, iron trichloride, iron dichloride and the like as raw materials to prepare the arsenic removing adsorbent with the effects of magnetic separation, photo-catalytic oxidation and adsorption. The arsenic removing adsorbent can oxidize trivalent arsenic into pentavalent arsenic which is easy to treat under the irradiation of visible light, then the pentavalent arsenic is removed by using excellent adsorption property of the arsenic removing adsorbent, and magnetic separation of the arsenic removing adsorbent can be realized; the preparation method disclosed by the invention is simple in process, convenient to operate and low in cost, and can organically combines photo-catalytic oxidation with adsorption to effectively remove trivalent arsenic in water; and the separation and recovery of the arsenic removing adsorbent are more convenient and quicker.

The invention belongs to the technical field of medical care and health care instruments, and particularly relates to a full-automatic bed-chair robot with a standing function. The full-automatic bed-chair robot comprises a bed body part and a wheelchair part, wherein the wheelchair part has a bed form and a wheelchair form; when the wheelchair part is in a bed state, the wheelchair part can be automatically butted with or separated from the bed body part; when the wheelchair part is separated from the bed body part, the wheelchair part can be switched into a wheelchair state, and running, parking and posture changing can be achieved in the wheelchair state. According to the robot, full-automatic butt joint and separation of a nursing bed and an electric wheelchair can be achieved, the robot has the functions of two kinds of nursing equipment at the same time, compared with an existing full-automatic bed-chair robot, when the robot is separated into a wheelchair form, a user can be helped to stand up and keep a standing posture, a larger contact range is provided for the user, and the user can feel more comfortable. Meanwhile, the patient can be helped to exercise the lower limb strength by exercising standing.

The invention discloses an atmospheric monitoring apparatus with a function of separating and collecting dust. The atmospheric monitoring apparatus comprises an air extracting pump, a second collecting chamber, a swing gear shaft, a standing chamber and collecting brushes, wherein the air extracting pump is interconnected with a first collecting chamber; each adsorption band is interconnected witha corresponding driven wheel; the second collecting chamber is interconnected with a transfer tube; each first motor is interconnected with a corresponding first motor shaft; the swing gear shaft isinterconnected with the inner sides of bearings and swing gears; a second motor is fixed at the top of the standing chamber; the collecting brushes are fixed at a second motor shaft. According to theatmospheric monitoring apparatus with the function of separating and collecting the dust, the dust in air is treated in a targeted manner by adopting three structures with the function of separating and collecting the dust, so that separating and collecting efficiency of a traditional device is improved, the effect of separating and collecting the dust is also ensured, the dust in the air can be sufficiently separated and collected, and the atmospheric environment is favorably monitored.

The invention relates to an oil sludge thermal drying device and method utilizing waste heat of a high-temperature furnace, comprising: a feeding system, a drying box and a discharge port, and the drying box includes: a purging system, a conveying system, a smoke exhaust system and a drying The base of the box, the purging system includes: an air inlet, a flue gas chamber, a purging device and a control device; The sweeping needles are located below the flue gas chamber and communicated with the flue gas chamber, and the plurality of sweeping baffles are located inside the flue gas chamber and respectively above each row of the sweeping needles, so The control device is connected to the plurality of purging baffles; the smoke exhaust system includes: an oil-gas separation system, a smoke exhaust pipe, and a flue gas treatment device, and the oil-gas separation system includes: a condensation device, a liquid outlet channel, a liquid outlet valves and oil-water separators. The invention fully separates and recycles the discharged resources, and reuses them, so as to realize the recycling of resources.

The invention relates to a bubbling fluidized bed device used for desorptive regeneration of powdery sulfur-bearing active coke, which includes a desorption column, in which an internal reheater, a bubbling fluidizing section and a cooling section are respectively formed from top to bottom. The bubbling fluidizing section includes an air distributor plate at the bottom and delivery pipes fixed tothe air distributor plate; the cooling section is a tube heat exchanger, which includes a heat exchange medium pipe box at exterior and heat exchange pipes at interior; the bubbling fluidizing sectionis arranged vertically; a desorbed regenerated active coke outlet is formed in the bottom. According to the required temperature during the desorption of an active coke adsorbent, reaction temperature of the bubbling fluidized bed is controlled; through a separation device, the carried powdery coke and high-concentration SO2 gas are separated; according to the desorption feature of the powdery sulfur-bearing active coke and high heat and mass transfer efficiencies of reaction gas in the bubbling fluidized bed, two arrangements of the desorption column are disclosed. The device can achieve high-effective regeneration of the sulfur-bearing active coke and recycling of sulfur and has extensive application prospect.

The invention relates to a device for testing spontaneous combustion nature and conditions of compressed and packed goods. The device comprises a constant temperature box for testing and a pretreatment compression device for tested samples, wherein the tested samples are compressed and packed through the compression device and then placed in the constant temperature box for testing the spontaneous combustion nature and conditions, the compression device comprises a compression cylinder, a reinforced testing cage, an upper cover of the testing cage, a pressure block and a hydraulic-spiral compound pressure rod, the reinforced testing cage is arranged in the compression cylinder, the tested samples are loaded into the compression cylinder, then the pressure block is further placed, the compression is performed under the hydraulic-spiral compound pressure rod till all the tested samples are pressed into the reinforced testing cage, then a side plate of the compression box is removed, the upper cover of the testing cage is inserted below a pressure plate and the reinforced testing cage is arranged in the constant temperature box for testing. Compared with the prior art, the range of test objects of spontaneous combustion experiments is expanded, and the device has the advantages of a wide range of applications, safety, reliability and the like.

The invention relates to high-frequency bipolar closed cutting forceps. The high-frequency bipolar closed cutting forceps are characterized by comprising a closed cutting forceps head device of the high-frequency bipolar closed cutting forceps, a forceps head opening / closing locking device of the high-frequency bipolar closed cutting forceps and a forceps head cutting precise control device of the high-frequency bipolar closed cutting forceps, wherein the closed cutting forceps head device comprises a first closed forceps head (1), a closed forceps head pin (2), a second closed forceps head (3), a forceps head insulating barrier (4), a forceps head push-pull bar (5), a blade push-pull tube (6), an outer aluminum tube (7) and a cutting blade (26); and the first closed forceps head (1) is rotationally connected with the second closed forceps head (3) through the closed forceps head pin (2). The invention aims to provide a medical high-frequency surgery instrument and relates to monopolar and bipolar mode multifunctional closed cutting forceps. The high-frequency bipolar closed cutting forceps are widely applicable to general surgery, cardiothoracic department, urological department, orthopedic department, coordinate with endoscopic surgery and laparoscopic surgery, and are a closed ring amplitude-regulating and power-regulating electrotome.

The invention belongs to the technical field of frequency domain blind source separation and audio signal processing, and particularly relates to a low-delay audio signal overdetermined blind source separation method, which comprises the following steps that: each microphone array element in a microphone array picks up sound signals of N sound sources to be separated in a target environment and converts the sound signals into corresponding digital signals, performing short-time Fourier transform on the time-frequency domain observation signal to obtain a corresponding time-frequency domain observation signal; repeatedly iterating and updating the obtained time-frequency domain observation signals until convergence is achieved, and obtaining the variance and the de-mixing vector of each sound source to be separated; constructing a de-mixing matrix by using the obtained de-mixing vector; performing inversion on the de-mixing matrix to obtain estimation of a mixing matrix; for each to-be-separated sound source, based on the hybrid matrix, constructing a multi-channel Wiener filter and performing filtering to obtain a time-frequency domain to-be-separated signal; and performing short-time inverse Fourier transform to obtain the time domain waveform of the signal to be separated.

The invention relates to a device for testing spontaneous combustion nature and conditions of compressed and packed goods. The device comprises a constant temperature box for testing and a pretreatment compression device for tested samples, wherein the tested samples are compressed and packed through the compression device and then placed in the constant temperature box for testing the spontaneous combustion nature and conditions, the compression device comprises a compression cylinder, a reinforced testing cage, an upper cover of the testing cage, a pressure block and a hydraulic-spiral compound pressure rod, the reinforced testing cage is arranged in the compression cylinder, the tested samples are loaded into the compression cylinder, then the pressure block is further placed, the compression is performed under the hydraulic-spiral compound pressure rod till all the tested samples are pressed into the reinforced testing cage, then a side plate of the compression box is removed, the upper cover of the testing cage is inserted below a pressure plate and the reinforced testing cage is arranged in the constant temperature box for testing. Compared with the prior art, the range of test objects of spontaneous combustion experiments is expanded, and the device has the advantages of a wide range of applications, safety, reliability and the like.