2326 results about "Air bubble" patented technology

A heat management system includes: a first flow passage in which a reserve tank is not provided; a second flow passage in which a reserve tank is provided; a switching device configured to switch between coupling and uncoupling of the first flow passage and the second flow passage to and from each other; and a control device configured to control the switching device. The control device is configured to, when predetermined coupling conditions are met, make the heat medium flow through the first flow passage and the second flow passage that have been coupled to each other by the switching device. When the control device determines that air bubbles exceeding the allowable volume are present in the heat medium, the coupling conditions switch from being unmet to being met.

The invention relates to a concrete vibration monitoring method and system based on image recognition and three-dimensional point cloud, and the method comprises the following steps: obtaining an image of a concrete surface in a vibration process and three-dimensional point cloud data of the concrete surface, marking coarse aggregate and bubbles on the concrete surface, and obtaining an image sample data set; using the image sample data set to train a target detection algorithm, and identifying aggregate and bubbles in the image; counting the number of coarse aggregates and the number of bubbles in the image; extracting the z coordinate value of each point on the vibration surface from the point cloud data to obtain the elevation difference of the whole vibration surface; establishing respective correlation models of the aggregate quantity, the bubble quantity, the elevation difference and the strength, the porosity and the segregation index by utilizing a regression model; and evaluating whether the vibration effect is qualified or not according to a prediction result of the correlation model. Real-time monitoring can be achieved in the vibrating process, and comprehensive and accurate vibrating quality evaluation is achieved.

The invention relates to the technical field of hemispherical harmonic oscillator assembly, in particular to a welding method and device for an assembled hemispherical harmonic oscillator, and the device comprises a vibration welding platform and a clamping assembly located above the vibration welding platform; the vibration welding platform is used for bearing the sensitive base and providing a thermal field and a vibration field needed by welding, and the clamping assembly is used for clamping the center shaft and sending the center shaft into a center hole of the base. A heating unit and a composite vibration ultrasonic transducer are arranged in the platform, and the platform is configured to apply high-frequency vibration formed by superposition of vertical longitudinal waves and horizontal torsional waves to the base. The high-frequency vibration thixotropic effect is used for reducing the viscosity of the molten solder, the ultrasonic cavitation effect is used for forcibly discharging bubbles at the bottom of the blind hole, and the sound radiation pressure generated by the vibration standing wave field is used for driving the center shaft to achieve friction-free self-centering in the hole. According to the device, the problems of air bolt pseudo soldering and rigid assembly clamping stagnation in the traditional process are solved, and the assembly coaxiality and the connection strength of the harmonic oscillator are remarkably improved.

The invention relates to the field of decorative films, in particular to an indented pattern color scraping decorative film and a preparation method thereof.The indented pattern color scraping decorative film comprises a skin feeling functional layer, a pattern developing layer, a supporting strengthening layer and a coloring strengthening layer, the skin feeling functional layer, the pattern developing layer and the supporting strengthening layer are composited into an integrated structure through hot pressing, and micron-sized air guide grooves are formed in the bonding faces of all the layers; the air guide grooves are arranged in parallel along the extending direction of the dimpled grains, the 60-degree glossiness of the surface of the decorative film is less than 3GU, the pencil hardness is greater than 1H, and the texture spacing difference between the outline edge of the dimpled grains and the printed pattern layer is 0.1-0.5 mm, so that the decorative film is endowed with excellent stereoscopic visual effect and physical property. The dimpled grain structure in the skin-touch functional layer is directly formed on the surface of the skin-touch coating, the problem of interlayer dislocation caused by traditional composite embossing is avoided, it is ensured that the dimpled grain outline is clear, the peeling strength between layers is high, bonding is tighter, and no bubble is left on the bonding face between the layers.

The invention relates to the field of PCB (printed circuit board) printing, in particular to a high-precision multi-layer lamination and alignment PCB printing process which comprises a substrate pretreatment stage, a substrate preassembly stage, a dynamic lamination stage and a finished product output stage, the dynamic lamination stage comprises preheating treatment and resonance impurity removal treatment, and the lamination stage is divided into multi-stage lamination. And air bubbles and resin between the laminated bodies are optimized in the second pressing stage. According to the method, the inner-layer core plate and the copper foil are pretreated, so that positioning of the multi-layer core plate is more accurate and detection is facilitated, meanwhile, nanoscale micropores are formed in the copper foil through a laser technology to improve the flowing property of subsequent resin, and in the pressing process, pre-pressing and multi-stage pressing are set to improve the pressing accuracy; and in the second-stage pressing process, the dispersion direction of internal bubbles and the flowing direction of resin are improved through an ultrasonic device, a radiation heating device, a magnetic field assisting device and the like, the alignment accuracy and the pressing precision of the plate are further improved, and the machining efficiency is guaranteed.

The invention discloses a coating and hot-pressing process of a PHA material, and belongs to the field of packaging material coating. The process comprises the following steps: tightly combining a molten PHA coating material with a base material through hot pressing; the PHA coating is further compacted through a hot press polish roller, and bubbles between the PHA coating and the base material are eliminated; then entering a cooling device, rapidly cooling through internal water circulation so as to cure the PHA coating, and meanwhile, spraying a trace amount of deionized water mist so as to prevent the base material from being dried and embrittled due to high temperature; entering a recrystallization zone, regulating and controlling the crystallinity of PHA, and balancing the mechanical property and degradation rate. The PHA can be well bonded with various base materials (such as paper, fabrics and films) in the hot pressing process, and an additional adhesive is not needed. Therefore, the technological process is simplified, and the cost is reduced. And the PHA can be uniformly coated on the surface of the base material through the hot pressing process to form a compact coating, so that the performance consistency of the product is ensured.

Disclosed is a dual slot die coater capable of discharging a coating solution through an outlet after removing air bubbles contained in the coating solution. The dual slot die coater according to the present disclosure includes a first air vent installed in the first manifold region and a second air vent installed in the second manifold region.

The invention relates to the technical field of image recognition, and discloses a glass fiber board production quality detection method and system, and the method comprises the steps: collecting a continuous infrared thermal image sequence through an infrared thermal imaging device; constructing a temperature difference image set; identifying a primitive region with an abnormal diffusion characteristic; further performing fitting enhancement and significance detection on the abnormal primitive region; and performing defect classification and quality judgment based on the regional feature vector. Compared with the prior art, the technical problems that in the prior art, high-precision parting judgment cannot be achieved under the conditions that the surface texture of a glass fiber board is complex, hot-pressing disturbance exists, particularly, hot diffusion behaviors of dry filaments, degumming and cavitation bubble defects are similar, and the false detection rate of a conventional algorithm is high are solved. Due to the fact that a multi-channel thermal diffusion consistency analysis mechanism and parallel discrimination logic based on feature vectors are introduced, infrared primitive anomaly enhancement detection and defect classification recognition under the complex background are achieved, and the accuracy of glass fiber board production quality detection is improved.

The utility model provides a compressed air foam fire extinguishing device. The compressed air foam fire extinguishing device comprises a pressure container, a compressed air foam generating part, a driving unit and a foam release spray pipe assembly, wherein foam premixed liquid is preloaded in the pressure container; the compressed air foam generating part adopts a shunt damping principle; compressed air foam with a certain foaming multiple is formed in compressed air foam liquid released by the compressed air foam generating part based on the flow division damping principle, the particle size of water can be refined, the coverage area of the water can be increased, more heat can be absorbed, comburent can be efficiently cooled, the penetrating force is improved through the compressed air foam, and the heat efficiency is improved. And the flame retardant can rapidly permeate into comburent to prevent rapid chemical chain reaction in the combustion process.

The invention discloses low-carbon anti-crack concrete and a preparation method thereof, belongs to the technical field of concrete processing, and is used for solving the technical problem that the anti-crack performance and the mechanical performance of concrete in the prior art need to be further improved. The preparation method comprises the following steps: injecting a concrete precursor into a plastic test mold, putting the plastic test mold on a vibration table, and vibrating for 1-2 minutes, and curing to obtain the anti-crack concrete. The preparation method comprises the following steps: preparing modified composite fibers, modified epoxy resin and modified recycled coarse aggregate as reinforcing materials of concrete, preparing a concrete precursor together with recycled fine aggregate, fly ash, cement, a curing agent and an auxiliary additive, injecting the concrete precursor into a plastic test mold, vibrating to remove bubbles, and curing to obtain the anti-crack concrete. The anti-cracking performance of the concrete is improved, and the mechanical performance and the high-temperature resistance of the concrete are also improved.

The present invention relates to the field of ink jet printing technology. The cartridges, whose ink reservoir is in communication with the external environment through a venting hole, are subject to ink leakage when the external pressure changes significantly with respect to the external pressure after ink filling, in particular due to possible air bubbles trapped in the in the ink reservoir. The present invention provides a cartridge lid (15) with an expansion space (25) formed between an outer lid member (40) and an inner lid member (27). The expansion space (25) is in communication with external environment through the venting hole (17) and has an inlet (26) through which ink is able to flow into the expansion space (25). The present invention also provides a cartridge, an ink jet print head and an ink jet printer.

The invention discloses an anti-freezing and self-healing hydrogel electrolyte of a water-based zinc ion battery and a preparation method of the anti-freezing and self-healing hydrogel electrolyte, and belongs to the technical field of water-based zinc ion batteries. The method comprises the following steps: (1) mixing a functional material, an acrylic monomer, an initiator, a cross-linking agent and soluble iron (III) salt to obtain a first product; (2) degassing the first product to remove bubbles, and then carrying out polymerization reaction to obtain a second product; and (3) soaking the second product in a 2-10 mol / L electrolyte aqueous solution for treatment to obtain the anti-freezing and self-healing hydrogel electrolyte. The hydrogel electrolyte prepared by the invention has high ionic conductivity and adhesion, and has good anti-freezing and self-healing capabilities. And when applied to the aqueous zinc ion battery, the composite material shows an ultra-long cycle life, can stably supply power even in an extremely severe environment, and has certain research significance for promoting flexible electronic equipment and large-scale energy storage application.

The invention relates to the technical field of water-stable layer materials, in particular to a microcapsule self-repairing ardealite water-stable layer material and a preparation method and application thereof.The preparation method comprises the following steps that S1, ardealite, slag powder and a modified coagulant are mixed in a mixer, and a preliminary modified mixture is obtained; s2, adding double microcapsules into the primary modified mixture to obtain a secondary modified mixture; s3, adding deionized water into the modified mixture obtained in the step S2, and stirring and mixing to obtain a modified wet mixture; and S4, injecting the modified wet mixture into a mold, vibrating to remove bubbles, standing at room temperature, and demolding and curing for 25-28 days to obtain the microcapsule self-repairing phosphogypsum water-stable layer material. Through the synergistic effect of the double microcapsules and the modified coagulant, the integrated function of rapid coagulation, self-repairing and toughness enhancement is achieved, it is guaranteed that a strength framework is rapidly formed in a high-humidity environment, meanwhile, immediate repairing can be provided for micro-damage, and the toughness and crack resistance of the material are macroscopically improved.

The utility model discloses an improved water stop diaphragm water pump. The improved water stop diaphragm water pump comprises a connecting part, a first water stop valve body, a second water stop valve body and a pumping assembly which are fixedly connected in sequence, a water stop cavity is formed between the first water stop valve body and the connecting part, a water stop seat is arranged in the water stop cavity, the interior of the water stop seat is a communicating cavity communicating with the valve plate cavity, and a water stop diaphragm is arranged in the water stop cavity; the first water stop valve body is provided with a water stop channel and an exhaust channel which are communicated with the water inlet connector and the balance cavity. When the water level rises, the water inlet connector is communicated with the balance cavity through the water stop channel, the water pressure of the balance cavity rises, and therefore water leakage of the water stop base is avoided. Bubbles are discharged by arranging the exhaust channel, so that the pressure of the water stop valve plate on the water stop seat is conveniently increased; and the liquid can directly enter the water stop cavity through the water stop diaphragm via the communicating cavity, so that the pumping flow rate of the liquid can be increased.

A foam molding method includes: moving a screw backward to take air into a heating barrel through a nozzle part in a state in which a shut-off nozzle is opened, the shut-off nozzle that opens or closes the nozzle part for injecting the molten resin and is disposed on a heating barrel; closing the shut-off nozzle and moving the screw forward, to diffuse the air taken into the heating barrel, in the molten resin in the heating barrel; feeding the molten resin forward while dispersing the air as the air bubbles in the molten resin by moving the screw backward while rotating it in a state in which the shut-off nozzle is closed; and opening the shut-off nozzle, to inject the molten resin containing the dispersed air bubbles into the cavity.

The invention relates to the technical field of bean product processing, and discloses a defoaming device for bean product production and processing, the device comprises a base, a base plate and a discharging barrel, one side of the top of the base plate is fixedly provided with a device main body, one side of the device main body is fixedly provided with a processing cylinder, and the defoaming device further comprises an eliminating assembly arranged in the processing cylinder, vertical plate parts are symmetrically and fixedly connected to the top of the base, a feeding assembly is arranged between the two vertical plate parts, the eliminating assembly comprises a longitudinal plate fixedly installed on the upper portion of the interior of the processing barrel, a driving motor is fixedly installed at the top of the longitudinal plate, and a rotating shaft is fixedly connected to the output end of the driving motor; and a central fan blade and a side gear are fixedly connected to the outer side of the rotating shaft, so that the problems that only a small amount of large bubbles are punctured by the tip of the device, and most of the bubbles are still likely to remain on the liquid level position, so that the bubble eliminating effect is reduced, and the subsequent bean product processing quality and taste are influenced are solved.

The utility model discloses a desulfurization liquid foam tank negative pressure defoaming device which comprises a defoaming box and a vortex fan, one side of the bottom of the defoaming box is connected with a desulfurization regeneration tower through a liquid inlet pipe, and the other side of the bottom of the defoaming box is connected with a foam tank through a liquid discharge pipe. An air inlet of the vortex fan is connected with an air outlet hole in the top of the defoaming box through an air inlet pipe, an air outlet of the vortex fan is connected with a negative pressure tail gas pipeline through an air outlet pipe, and valves are arranged on the liquid discharge pipe, the air inlet pipe and the liquid inlet pipe. The defoaming box disclosed by the utility model is arranged between the desulfurization regeneration tower and the foam tank, bubbles at the upper part of foam liquid entering the defoaming box are broken by utilizing negative pressure and centrifugal force generated by the vortex fan, and the defoamed foam liquid enters the foam tank, so that the influence on the operation precision caused by a large amount of accumulated foams in the foam tank can be avoided, and the field operation environment is effectively improved.

A hot tub wall jet nozzle includes a nozzle body and a nozzle core seat. Water flows from the water inlet into the water flow channel in the nozzle body. Air enters through the air inlet of the nozzle body and reaches the first air accommodating cavity, then flows from the first air accommodating cavity to the second air accommodating cavity, and the air from the second air accommodating cavity is then mixed with the water in the nozzle core seat at the water outlet under the Venturi effect, and the mixed water and air flow is finally discharged through the water outlet. This structural arrangement allows for reduced dilution and loss of air bubbles during water flow transmission. The Venturi effect produced in this nozzle is capable of generating a greater volume of air ejection, thus enhancing the strength and effectiveness of the massage.

To provide a coating system that can improve the property of discharging air bubbles and foreign matter from inside a coating head unit.SOLUTION: A painting robot 10 comprises: a painting head unit 50 comprising a painting head 53; a robot arm R1, which moves the painting head unit 50 to a desired position; a head control unit 90, which controls operation of the painting head 53; and a control unit comprising a robot arm control unit 70, which controls operation of the robot arm R1. The robot arm control unit 70 is configured to perform: head movement control to move the painting head unit 50 to shift a posture of the painting head unit 50 from an ejection position of ejecting droplets, so as to move air bubbles B1 present in the painting head 53; and posture return control to return the posture of the painting head unit 50 to the ejection position. The head control unit 90 is configured to perform droplet ejection control to eject droplets from a nozzle 54 during or immediately after the posture return control.SELECTED DRAWING: Figure 2

The utility model discloses an impregnation system for a resin-fiber pultrusion composite material, which comprises a pressure chamber and a matched cover plate, the pressure chamber is enclosed by a bottom plate, a first wall plate, a third wall plate, a first side plate and a second side plate, and the first wall plate and the third wall plate are distributed at the left end, the right end, the front end and the rear end of the bottom plate; a second wallboard is arranged to divide the pressure chamber into a first pressure chamber and a second pressure chamber, a prefabricated mold is installed on the second wallboard, a fiber outlet is formed in the first wallboard, a second pipeline connector is arranged at the bottom of the first pressure chamber, and a fiber inlet and a first pipeline connector are formed in the cover plate. According to the utility model, a double-cabin structure is arranged to control the pressure in the first pressure cabin to be low positive pressure and the pressure in the second pressure cabin to be negative pressure, so that after fibers are fully infiltrated, excessive glue solution is removed through pultrusion, and inclusion bubbles and volatile matters are fully removed, thereby improving the quality of a resin-fiber pultrusion composite material product; and high pressure and strict sealing requirements of traditional high-pressure injection are reduced, and the device is suitable for the field of gum dipping.

The utility model relates to the technical field of rubber paste production, and discloses a rubber paste coating mechanism which comprises a rack, an extrusion device and a platform are arranged on the rack, an extrusion channel, a rubber paste extrusion inlet and a rubber paste extrusion outlet are arranged on the extrusion device, the rubber paste extrusion inlet and the rubber paste extrusion outlet are communicated with the extrusion channel, and the extrusion device is located above the platform. A base cloth moving channel is formed between the extruding device and the platform, the rubber paste extruding outlet is communicated with the base cloth moving channel so that extruded rubber paste can be laid on base cloth in the base cloth moving channel, and the base cloth moving channel can allow the base cloth and the rubber paste on the base cloth to pass through; the device further comprises a rubber paste feeding device, the rubber paste feeding device comprises a discharging part, a discharging opening is formed in the discharging part and right faces the rubber paste extrusion inlet, and the rubber paste feeding device can extrude rubber paste from the discharging opening and put the rubber paste into the extrusion channel. The device has the beneficial effects that the densities of all parts of the rubber paste are more uniform, the number and volume of air bubbles in the rubber paste are reduced, and the quality of finished rubber paste is improved.

The utility model relates to the technical field of air bubble film forming devices, and discloses an air bubble film forming device which comprises a base and a forming roller, one side of the top of the base is fixedly connected with a fixing seat, the top of the fixing seat is slidably connected with symmetrical clamping plates, and the opposite sides of the two clamping plates are rotatably connected with rotating discs. A positioning column is fixedly connected to the center of the side, away from the clamping plate, of the rotary disc. A rubber pad is fixedly connected to the side, close to the positioning column, of the rotary disc. According to the air bubble film forming device, after a handle is rotated to enable two clamping plates to be close to each other and clamp a winding drum, a rotating plate is fixed through a limiting assembly, so that the winding drum is effectively prevented from loosening in the operation process of the device, and when the device is started to produce an air bubble film, a driving assembly operates to enable the winding drum between the two clamping plates to synchronously rotate; according to the air bubble film winding device, the air bubble film can be wound, so that when the air bubble film winding device is used, the air bubble film does not need to be manually wound, and the practicability of the air bubble film winding device is higher.

The invention discloses a concrete wave wall formwork trolley with an auxiliary vibration compact structure, which comprises a door-shaped frame, a wave wall formwork group is arranged at the bottom of the door-shaped frame, and a vibration guide mechanism positioned above the wave wall formwork group is arranged at the bottom of the door-shaped frame; walking wheels which are uniformly distributed are mounted at the bottom of the door-shaped frame and are distributed on two sides of the wave wall template group; the wave wall formwork set comprises two side formworks, evenly-distributed connecting blocks are fixedly installed on the sides, opposite to each other, of the two side formworks, and evenly-distributed control screw rods are connected to the door-shaped frame in a threaded mode. A tamping function is integrated on the trolley, so that bubbles are discharged from concrete, gaps are filled and the like, the concrete is more compact, the engineering quality of a built wave wall is improved, meanwhile, a traditional manual control tamping mode is replaced, the functionality of the trolley is enhanced, and the tamping efficiency and quality are improved.

The invention relates to an integrated active exhaust volume control device for CRRT, which belongs to the technical field of medical instruments and comprises a main mounting frame, and an on-line self-exhaust air bubble catcher, a continuous operation peristaltic pump, a mechanical volume follow-up compensation device, a module core controller and a piezoelectric ceramic micro compensator are integrated and fixed on the main mounting frame. The online self-discharging air bubble catcher actively removes bubbles in liquid, the peristaltic pump is continuously operated to achieve non-pulse continuous conveying of displacement liquid, the mechanical volume follow-up compensation device accurately regulates and controls waste liquid discharging, the module core controller receives signals in real time and coordinates actions of all components, and the piezoelectric ceramic micro compensator achieves fine adjustment of net dehydration. The module can eliminate bubble interference from the source, guarantee the continuity of CRRT treatment, improve the capacity management precision, simplify clinical operation, relieve the burden of medical staff and guarantee the hemodynamic stability of patients, and is suitable for CRRT treatment of critical patients.

An inspection system includes: a suspended matter detecting and tracking means that detects and tracks suspended matter present in the liquid in the container in chronological images obtained by consecutively imaging the liquid with a camera; a determining and storage controlling means that determines, based on a movement locus of the tracked suspended matter, whether the suspended matter is foreign matter or an air bubble, and stores inspection result information including a result of the determination and information of the movement locus of the suspended matter used as a basis for the determination into a storing means in association with identification information of the container; and a display controlling means that causes a displaying means to display the result of the determination and the information of the movement locus of the suspended matter used as the basis for the determination included by the inspection result information.

The invention relates to the field of image processing, in particular to an oil cup defect detection method and system based on deep learning. The method comprises the following steps: acquiring continuous multi-frame oil cup images by using an industrial camera, preprocessing the continuous multi-frame oil cup images, and inputting the preprocessed oil cup images into a neural network model so as to obtain oil cup defect types; the defect types of the oil cup comprise bubbles, cracks, dirty points, scratches and normality; the preprocessing comprises the following steps of: performing distortion removal on an acquired oil cup image by using calibration parameters of an industrial camera, identifying a cup body of the oil cup, cutting the oil cup image, and only reserving a cup body area so as to obtain a first oil cup image; and carrying out multi-frame alignment on the first oil cup image corresponding to each frame of oil cup image, and carrying out synthesis processing on the aligned images so as to obtain a synthesized image. By adopting the method, the accuracy and the detection efficiency of the detection result of the electronic cigarette liquid cup can be effectively improved.

The invention relates to the technical field of ceramic materials, in particular to a preparation method of submillimeter zirconia microspheres. The preparation method comprises the following steps: adding an isobutylene-maleic anhydride copolymer, butyl glycidyl ether and ammonium citrate into water, then adjusting the pH value of the solution to be alkaline by using an alkaline solution, and adding a defoaming agent and yttria-stabilized zirconia powder to obtain a premixed solution; carrying out ball milling on the premixed liquid, and then carrying out vacuum bubble removal to obtain zirconium oxide slurry; injecting the zirconium oxide slurry into an oily medium to obtain a zirconium oxide ceramic microbead green body; cleaning the zirconia ceramic microbead green body, drying, carrying out gradient heating calcination, and carrying out autogenous grinding to obtain the submillimeter zirconia microbead; the gel microspheres can be formed only by adding three organic matters, and the gel microspheres are low in organic matter content and free of toxicity. The method disclosed by the invention is high in yield, simple to operate and low in cost, and the prepared zirconium oxide microbeads are uniform in particle size and have relatively high density and mechanical properties.

The invention provides a fibrous degradable flexible pressure sensor with ultralow detection limit and a preparation method and application thereof.The preparation method comprises the steps that lignin powder is dispersed in a sodium hydroxide aqueous solution, ultrasonically crushed and stirred to be uniform, then polyethylene oxide powder is uniformly dissolved in the solution in four times, stirring is conducted till the solution is uniform, and the pressure sensor is obtained; putting the solution into a vacuum cavity, and removing bubbles at room temperature to obtain an electrostatic spinning precursor solution; then preparing a lignin fiber thin film by adopting an electrostatic spinning process, and then drying the thin film; and finally, cutting the obtained lignin fiber film into a square film, placing an interdigital electrode mask on the square film, spraying a metal silver nanowire electrode by using a silver nanowire solution, and then embedding the fiber film in a polyimide film to prepare the flexible pressure sensor. According to the invention, the integrated design of the capacitive pressure sensor is realized, the cost is low, the process is simple, and the pressure sensor has excellent flexibility and sensitivity.

The invention provides a stock garbage in-situ dehydration method and system based on air foam displacement. The method is used for carrying out dehydration treatment on the refuse heap of the refuse landfill. The method comprises the steps that a vertical shaft is hit into a garbage heap, and a plurality of percolation holes are formed in the peripheral wall of the vertical shaft; air foam is injected into the vertical shaft, and the air foam moves along the vertical shaft and displaces percolate in the garbage heap through the percolation holes; detecting whether the water content of the garbage heap in the preset depth is smaller than a preset water content threshold value or not; if yes, air foam injection into the vertical shaft is stopped, and air is injected into the vertical shaft; detecting whether the gas concentration reaches a preset standard threshold value or not; if yes, air injection into the vertical shaft is stopped. According to the stored garbage in-situ dehydration method and system based on air foam displacement, the water content of the garbage heap can be further reduced, the dehydration effect of the heterogeneous garbage heap can be effectively improved, and meanwhile harmful gas can be treated.

The utility model provides a laminating device for membrane electrode packaging and a fuel cell production system, and belongs to the technical field of fuel cell manufacturing. The laminating device for membrane electrode packaging comprises a laminating assembly, a frame unwinding assembly and a driving assembly, the laminating assembly comprises a steel roller and a rubber roller which are oppositely distributed, and a gap for a membrane material to pass through is formed between the steel roller and the rubber roller; the frame unwinding assembly is located on the upstream of the steel roller and used for conveying the frame to the gap through the steel roller to be attached to the base material. The driving assembly is in driving connection with the laminating assembly, so that the steel roller and the rubber roller can be close to each other or far away from each other, and the laminating device for membrane electrode packaging can effectively solve the problems that the flatness is poor and bubbles exist after the frame and the membrane electrode are laminated.