2068 results about "Air cushion" patented technology

The invention relates to the technical field of wharf loading and unloading, and discloses a bulk grain wharf ship loading and unloading dual-purpose machine which comprises a conveyor main body and a frame, a discharging hopper is fixedly connected to the top of the conveyor main body, the bottom of the conveyor main body is rotationally connected with the outer wall of the frame, and a supporting frame is rotationally connected to the bottom of the conveyor main body; when a ship needs to be unloaded, a conveying pipeline enters a cabin through a moving assembly, then when a first motor is started to enable a rotating rod to rotate, a connecting rod can be driven to rotate, a concave-convex ring rotates, an extrusion pushing assembly ascends and extrudes gas, and finally high-pressure gas is sprayed out towards grain particles and permeates into gaps of the grain particles to form an air cushion effect; the friction force among grain particles is reduced, the mobility of the grain particles is enhanced, the grains are conveniently conveyed by the spiral auger, the situation that the grains are accumulated at the bottom of the spiral auger due to poor mobility of the grain particles, the grains are extruded and are prone to being damaged is effectively prevented, and the integrity of the grain particles is ensured.

The invention provides a new class of transportation with a partially aerostatically supported ram air cushion ship (PASRACS) that can provide safe, fast, efficient global transport services with extraordinary comfort, luxury and amenities. The PASRACS employs inventive synergistic combinations of lift from aerostatic, aerodynamic, hydrostatic and hydrodynamic forces for different modes of operation ranging from a stationary floating configuration on a water surface, to flight in ground effect at high speed. A propulsion system can utilize hydrogen as an energy source driving fluid-dynamic thrusters, to enable zero carbon emissions operations. A transition method is provided for a PASRACS to transition from a floating mode to a takeoff mode to a flight in ground-effect mode in an inventive optimized manner. A transport method for multimodally transporting payload is provided with PASRACS vehicles and systems, with quick turn time operations enabled by the use of payload transfer transport modules and transfer vehicles.

The invention provides a preparation method of an Al-Mg-Mn-Sc series aluminum alloy plate. The preparation method comprises the following steps: S1, carrying out hot rolling on an Al-Mg-Mn-Sc series aluminum alloy cast ingot; s2, the hot-rolled aluminum alloy plate is pre-annealed and then cold-rolled for the first time; s3, carrying out intermediate annealing on the cold-rolled aluminum alloy plate, and then carrying out secondary cold rolling; and S4, the aluminum alloy plate obtained in the step S3 is subjected to air cushion furnace rapid annealing. The invention further provides application of the aluminum alloy plate prepared through the method. According to the preparation method of the Al-Mg-Mn-Sc series aluminum alloy plate, through accurate component regulation and control and process optimization, the strength of the aluminum alloy plate is improved, and the mechanical property of the aluminum alloy plate is not obviously reduced under the 280 DEG C brazing machining condition.

1. The name of this design product: Comb (air cushion). 2. Purpose of this design product: used for combing hair. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: Design 1 Stereoscopic Drawing 1. 5. Designate Design 1 as the base design.

The invention relates to the technical field of vibration tests, in particular to a ground resonance test suspension device and a test method. The ground resonance test suspension device is provided with a bearing frame body, a hoisting mechanism, a bearing mechanism and a suspension mechanism, the bearing frame body is composed of a bearing supporting column, a cross beam and a longitudinal beam, and the position of the cross beam can be adjusted; a bracket of the bearing mechanism is provided with a bottom beam, an auxiliary supporting beam and a supporting beam, and a flexible air cushion is arranged on the supporting beam. A flexible supporting unit of the suspension mechanism is provided with a main spring rope, an upper hanging scaffold, a lower hanging scaffold and an auxiliary spring rope, and an auxiliary spring rope connecting unit can control the state of the flexible supporting unit. The invention further provides a ground resonance test method which comprises the steps of suspension pretreatment, aircraft suspension and test, and the equivalent stiffness of the suspension mechanism can be adjusted. The aircraft suspension system can adapt to different aircraft sizes and weight distribution, and the equivalent stiffness of the whole suspension system can be adjusted to meet the test support frequency requirement.

The invention discloses an air cushion belt dynamic balance control system and a management and control method, and belongs to the field of air cushion belt conveyors. Original signals of a sensor are obtained, a Fluent noise filtering algorithm is used for eliminating airflow interference, synchronous tension and air pressure data are aligned through timestamps, a reliability model is used for filling temperature field missing values, and standardized data streams are formed; based on the standardized data flow, analyzing an air pressure gradient by means of a fluid mechanics equation, extracting abnormal vibration modal characteristics of the carrier roller, calculating a fluctuation coefficient in combination with tension simulation, and obtaining a multi-dimensional parameter set containing dynamic distribution of a pressure field and a belt deviation angle; inputting the multi-dimensional parameter set into the digital twin, updating the fatigue damage parameters of the belt through Fluent simulation driving, rendering the visualization result of the flow field of the air chamber in real time, and outputting a simulation result containing the dynamic cloud picture of the pressure field of the air chamber and the fatigue damage distribution of the belt; and calculating the pressure balance degree of the air chamber according to a simulation result.

The invention relates to the technical field of carbon fiber prepreg cloth production, and discloses a low-gram-weight yarn spreading device for carbon fiber prepreg cloth, which comprises a rack, and a modular yarn releasing unit, a hot roller yarn spreading unit and an airflow auxiliary yarn spreading unit which are arranged on the rack, the hot roller yarn spreading unit comprises at least three hot roller groups, the airflow auxiliary yarn spreading unit comprises an airflow nozzle assembly and an airflow buffer plate which are oppositely distributed up and down, the airflow nozzle assembly sprays airflow and is used for transversely pushing away fibers to assist yarn spreading, and the airflow buffer plate releases the airflow to form an air cushion to buffer yarn tension fluctuation. According to the low-gram-weight yarn spreading device for the carbon fiber prepreg cloth, the hot roller yarn spreading unit and the airflow auxiliary yarn spreading unit cooperate, efficient yarn spreading is achieved, meanwhile, the airflow buffer plate releases low-pressure airflow, an air cushion is formed, tension fluctuation is absorbed, and the yarn breaking rate is reduced.

The invention belongs to the technical field of aluminum-based materials, and particularly relates to a preparation method of a high-performance 1060-O-state aluminum alloy connecting piece. The preparation method comprises the following steps that firstly, a hot-rolled coil is prepared; step 2, preheating treatment; thirdly, a cold-rolled coil is prepared; fourthly, air cushion type continuous annealing is conducted; 5, annealing a finished product in the box-type furnace; and step 6, slitting a finished product. According to the method, the problems of low production efficiency, poor comprehensive performance and high energy consumption when the O-state aluminum alloy connecting piece is prepared by adopting a single box-type furnace annealing process are solved, high-efficiency, high-consistency and low-energy-consumption production is realized, and the prepared connecting piece has stable low strength and high ductility and is suitable for large-scale production. And the application requirements of new energy automobiles and energy storage battery modules can be met.

A breathable cushion in accordance with the present disclosure includes a frame arranged inside a cover. The frame includes an outer rim, an inner rim spaced apart from the outer rim, and a lattice extending between the outer rim and the inner rim and defining an internal void of the frame. Apertures are formed through the lattice of the frame. The apertures and internal void allow airflow through the frame.

A motion simulator system is disclosed that includes a freely rotatable movable frame supported by, but unattached to, a hemispherical base. The movable frame comprises a spherical enclosure constructed from rigid, lightweight materials such as composite materials or interlocking panels, providing unlimited 360-degree rotation in all three rotational degrees of freedom (pitch, roll, and yaw). An internal actuator system coupled to the movable frame controls attitude positioning while the center of rotation remains substantially fixed relative to the base. Low friction engagement between the movable frame and base is achieved through transfer bearings integrated into the base's outer surface or by pressure-vented air cushions. The system enables smooth, continuous rotation of the untethered movable frame for enhanced motion simulation applications.

The invention belongs to the field of life, and particularly relates to a thermos bottle with visible water storage capacity. The thermos bottle comprises a shell and an inner container arranged inside the shell. A base capable of vertically moving is mounted at the bottom of the shell, an elastic airbag is fixedly connected between the upper end of the base and the lower end of the inner container, a vertical strip opening is hermetically connected onto the side wall of the shell, a transparent tube is fixedly connected into the strip opening, the lower end of the transparent tube is communicated with the elastic airbag, and a piston block is hermetically connected into the transparent tube. The quantity of water in the thermos bottle can be known by observing the position of a piston block, a piezoelectric ceramic is used for power generation when water is injected, an LED (light-emitting diode) lamp in the piston block can emit light, the quantity of the water in the thermos bottlecan be known conveniently by people, and scalding is avoided. In addition, by the aid of an annular air cushion, when the thermos bottle falls, a good buffering function can be achieved, and impact onthe inner container is reduced.

The application belongs to the technical field of functional coating materials, and particularly relates to a kind of super-hydrophobic solution based on fumed silica and its preparation method and application, comprising: step one, 20-200nm fumed silica nanoparticles are dispersed in ethanol / water mixed system, and sodium dodecyl benzene sulfonate is added to prevent agglomeration;Step two, under the catalysis of ammonia, tetraethyl orthosilicate and 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane are added dropwise in sequence for fluorination modification;Step three, fluorinated silica nanoparticle suspension is prepared by ultrasonic-assisted reaction;Step four, the solution is sprayed onto the surface of ceramic substrate with micro-nano structure to form a coating;Step five, strong adhesion without adhesive is realized by mechanical anchoring effect.The application realizes super-hydrophobic performance of 153±0.5° high water contact angle and physical adhesion stability under 100-200g load by the synergistic effect of nanoparticle size effect and substrate surface topological structure, low surface energy of fluorinated alkyl chain and Cassie-Baxter air cushion layer effect, and is especially suitable for self-cleaning surface, anti-icing coating and marine corrosion prevention field.

The utility model discloses an air floatation gravity removing device which comprises a simulation wall, an air floatation platform and an air floatation system, and the simulation wall is used for installing a test piece to be unfolded. The air floatation system comprises a control cabinet, an air pipe assembly and a plurality of air cushion assemblies; the plurality of air cushion assemblies are used for respectively mounting each unfolding page in the test piece to be unfolded. The air cushion assembly is placed on the air floating platform. The air cushion assembly comprises a plurality of air feet, two air foot supports, two supporting parts and an adapter support. The first ends of the two air foot supports are connected with each other, and the connecting positions of the second ends of the two air foot supports and the first ends of the two air foot supports are of a triangular structure and envelop the gravity center range of the corresponding unfolding page. The air foot is arranged at the bottom of the air foot support, and the control cabinet is used for providing compressed air for the air foot so that an air film can be produced at the bottom of the air foot to suspend on the air floating platform. The bottoms of the two supporting parts are connected with the two air foot supports respectively, the tops of the two supporting parts are both connected with the switching support, and the switching support is provided with a switching part used for installing the unfolding hinge.

The invention discloses an unmanned ship self-adaptive safety redundancy system for an inland river ultra-shallow water environment and a control method. The system is composed of four-stage closed-loop redundancy of sensing, decision making, execution and laws and regulations. A 0.1 m-stage shallow water three-dimensional map is constructed in real time by a dual-millimeter-wave radar and a high-frequency single-beam sounding sonar; the main and standby controllers process the quay wall effect, backflow and grounding nonlinear disturbance on line through a BLF-RBFNN fixed time convergence algorithm, and the upper bound of convergence time is 4.2 s and is irrelevant to the initial state; the variable-configuration double-pump jet-air cushion hybrid propulsion device adjusts the draft on line according to the water depth of 0.12-0.45 m, and is matched with the self-righting honeycomb composite ship body to automatically stop leakage and return within 60 seconds when the ship body is damaged; and when the ship-end double control fails, the ship-shore cloud collaborative digital twinborn body completes regulation-level minimum risk takeover within 10 seconds. Experiments prove that the path error is less than or equal to 0.08 m and the fault degradation success rate is 100% in a 0.15 m water tank and 0.35 m Yangtze River channel, and zero-grounding, zero-overturning and zero-regulation illegal sailing of the ultra-shallow water unmanned ship is realized.

The utility model relates to the field of bedding, in particular to a massage air bag, an air cushion and a massage air bag pillow. An existing massage air bag is formed by butt joint of an upper concave cavity and a lower concave cavity, sponge is arranged in the lower concave cavity, the structure is complex, and production cost is high. Therefore, according to the massage air bag, the air cushion and the massage air bag pillow, the massage air bag comprises a bag body internally provided with a bag cavity, the bag body is formed by attaching the peripheries of an upper placing piece and a lower placing piece which are vertically stacked, the bag cavity is defined by the upper placing piece and the lower placing piece, a massage part is arranged in the middle of the upper placing piece, and the top wall, where the massage part is located, of the bag body protrudes upwards during inflation; the upper placing piece protrudes out of the lower placing piece extending in the plane, the side wall and the top wall of the bag body are formed by the upper placing piece, and a concave cavity is formed in the side, facing the lower placing piece, of the upper placing piece to serve as a bag cavity. The capsule cavity only exists in a single cavity on one side of the upper placing piece, the lower placing piece is not provided with a cavity, the capsule structure is simplified, and the production cost is reduced. The air cushion using the massage air bag and the massage air bag pillow using the air cushion are also simplified, and the cost is reduced.

The invention discloses an ultra-large-diameter slurry shield deslagging parameter optimization method, system and device and a storage medium. The method comprises the following steps that a three-dimensional model is constructed; establishing a motion simulation model; the motion simulation model solves a flow process equation of a slurry fluid phase and a motion control equation of a rock slag particle phase according to the deslagging parameters, so that flow field distribution characteristics and rock slag migration behaviors in the excavation bin and the air cushion bin are obtained; obtaining an evaluation index of the deslagging performance, and judging whether the evaluation index meets a preset requirement or not. According to the method, a fluid phase flow equation and a particle phase motion control equation are solved by utilizing the simulation model, and an interaction mechanism of the slurry and the rock slag is defined, so that simulation is closer to a real situation; and dynamic adaptation of slag discharge parameters with a complex pipe network system and actual construction working conditions is realized. The probability of detention and accumulation of rock slag at the bottoms of the excavation bin and the air cushion bin is remarkably reduced, equipment abrasion is reduced, abnormal tunneling parameters are avoided, and stability and continuity of shield tunneling are guaranteed.

The disclosed technology includes an air valve assembly for providing flexibility for a user when inflating an inflatable air mattress. The air valve assembly can include a base configured to attach to a portion of the inflatable air mattress, a middle valve configured to attach to the base portion and having a first diameter, a diaphragm member configured to attach to the middle valve, and a cap configured to removably couple to a portion of the air valve. The assembly can further include an adapter configured to detachably attach to the middle valve portion. The adapter can have a portion with a second diameter that is smaller than the first diameter such that when the adapter is attached, a user may use an inflation device with a smaller dimensioned output.

The utility model relates to the technical field of unmanned aerial vehicles, in particular to an amphibious rescue unmanned aerial vehicle which comprises a water dwelling assembly and an air dwelling assembly. The amphibious rescue unmanned aerial vehicle comprises an amphibious rescue unmanned aerial vehicle body and an air-dwelling assembly, the amphibious rescue unmanned aerial vehicle body comprises a first storage shell, a second storage shell and an inflatable air cushion connected with the first storage shell and the second storage shell, the amphibious rescue unmanned aerial vehicle body is inflated to unfold the inflatable air cushion to form an amphibious form after making contact with the water surface, and the air-dwelling assembly comprises a first wing connected to the first storage shell. The first wing is connected to the first storage shell, the second wing is connected to the second storage shell, propeller assemblies are arranged at the two ends of the first wing and the two ends of the second wing, and the first wing and the second wing are switched to be of a cross structure to form an air-dwelling form. According to the amphibious rescue unmanned aerial vehicle disclosed by the utility model, the unmanned aerial vehicle shares a set of wing and propeller assemblies with changeable forms in an air-dwelling form and a water-dwelling form, so that the amphibious rescue unmanned aerial vehicle can play the maximum effect when flying and sailing in water, the purpose of rapid rescue is achieved, the rescue manpower is effectively saved, and the water rescue time is shortened.

The application relates to the technical field of cosmetics, in particular to a high-concealment makeup-maintaining air cushion and a preparation method thereof. A film forming agent in the high-concealment makeup-maintaining air cushion comprises the following: trimethylsiloxy silicate 5-7 parts, isododecane 0.3-0.7 parts, and acrylic acid (ester) / polymethyltrimethicone methacrylate copolymer 2-3 parts. A colorant comprises the following raw materials in parts by weight: titanium dioxide 5-7 parts, silica 0.8-1.2 parts, mica powder 5-7 parts, CI 77492 0.4-0.8 parts, aluminum hydroxide 0.8-1.2 parts, CI 77491 0.4-0.6 parts, triethoxyl octyl silane 0.8-1.2 parts, and CI 77499 0.3-0.5 parts. The particle size of the titanium dioxide at least comprises any two of 4 nm, 30-50 nm and 200-260 nm. The air cushion has the advantages of prolonging the makeup-maintaining time of the air cushion and improving the concealment effect.

A traction battery (10) of a motor vehicle, comprising a plurality of battery cells (10), with compensation elements (11) arranged between adjacent battery cells (10), which are designed to compensate for a change in volume of the battery cells (10), wherein the compensation elements (11) each have opposing cover elements (13) and a frame element (14) arranged between or next to the cover elements (13). wherein a cavity (15) delimited at least by the cover elements (14) of the respective compensation element (11) is either directly filled with gas or accommodates a gas-filled gas cushion, and wherein groove-like depressions (17) are introduced into at least one of the cover elements (13) of the respective compensation element (11), which are designed to guide coolant.

The invention relates to the technical field of injection molds, and discloses an automotive upholstery injection mold, which comprises a gas-assisted injection molding module, and also comprises: a support module, which comprises a bracket, a sliding seat is slidably arranged at the top of the bracket, and a fixed seat is fixed at the top of one side of the bracket; the mold clamping module comprises a mold assembly and a clamp assembly, the clamp assembly comprises a pair of oppositely-arranged heat insulation cavities, the two heat insulation cavities are formed in a sliding base and a fixed base respectively, heat conduction clamps are arranged in the heat insulation cavities in a sliding mode respectively, and clamping air cylinders are arranged between the heat insulation cavities and the corresponding heat conduction clamps. The mold assembly is arranged in the two heat conduction clamps through the rapid installation assembly, and an air cushion demolding module is arranged on the heat insulation cavity in one side. The combined splicing module is arranged on the support in a sliding mode, a cooling module is arranged on the inner side of the combined splicing module, and after the cooling module is clamped on the heat conduction clamp through the combined splicing module, the mold assembly is cooled.

The invention discloses a plate flexible laser cutting production line and method integrating uncoiling, flattening and robot grabbing, and belongs to the technical field of metal plate machining. The plate flexible laser cutting production line comprises the steps that S1, an uncoiling and flattening mechanism, a gas-magnetic composite suspension bed and a sorting robot with a Bernoulli gripper are configured; s2, the coiled materials are fed into a suspension bed, the levelness is locked through permanent magnet attraction, and non-contact suspension and locking flat conveying of the plates are achieved in cooperation with the lifting force of a micropore air cushion; s3, laser head follow-up cutting is carried out, and plate local warping caused by thermal stress release is restrained through a permanent magnetic field; and S4, negative pressure lift force is generated through the Bernoulli effect, and when the lift force overcomes the resultant force of the magnetic attraction force, the gravity and the friction force, the workpiece is separated from the crawler belt and stripped from the framework. The air-magnetic composite suspension bed is constructed, the permanent magnet array is used for generating downward background magnetic attraction force, meanwhile, the high-pressure air bellow is used for spraying airflow through the micropore array to generate air cushion lift force, the plate is in a non-contact suspension state, and the risk of surface scratching is remarkably reduced.

1. The name of the design product: air cushion comb (relaxing massage). 2. The use of the design product: the product design is used for combing hair and massaging head, neck and human body acupoints. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

The invention discloses an automatic alarm system of an air cushion type belt conveyor. The automatic alarm system comprises a sensing layer, a control layer and an execution layer. The sensing layer constructs a multi-dimensional sensing network through an air film thickness sensor, an air pressure sensor, a belt state sensor, an air chamber airflow audio analysis module, a motor power fluctuation detection module and a distributed optical fiber sensing module. The control layer adopts an edge-cloud computing collaborative architecture, an edge computing node is responsible for real-time data preprocessing, the fog computing layer runs a digital twin model to complete data fusion and state simulation, and a cloud computing center stores historical data and optimizes an algorithm and is provided with a three-level early warning and adaptive sensing mechanism. The execution layer executes parameter adjustment, sound-light alarm or emergency shutdown according to instructions of the control layer. Comprehensive monitoring, intelligent diagnosis and automatic regulation and control of the operation state of the air cushion type belt conveyor are achieved, and the operation reliability and the maintenance efficiency of equipment are remarkably improved.

The disclosed technology includes an air valve assembly for providing flexibility for a user when inflating an inflatable air mattress. The air valve assembly can include a base configured to attach to a portion of the inflatable air mattress, a middle valve configured to attach to the base portion and having a first diameter, a diaphragm member configured to attach to the middle valve, and a cap configured to removably couple to a portion of the air valve. The assembly can further include an adapter configured to detachably attach to the middle valve portion. The adapter can have a portion with a second diameter that is smaller than the first diameter such that when the adapter is attached, a user may use an inflation device with a smaller dimensioned output.

The utility model discloses automatic production equipment for an air cushion product assembly, and relates to the field of air cushion production. Comprising an unwinding station, a punching conveying frame, a punching discharging station, a first welding machine, a lamination conveying line, a material moving conveying frame, a screen printing machine, a drying machine, a main traction roller, a second welding machine, a punching slitting station, a multi-strip-in-one mechanism, a third welding machine and transverse cutting receiving equipment. Materials are output through the unwinding station; the steps of air tap hole punching, air tap assembling, first-time welding, printing and spraying, drying, second-time welding, slitting, laminating, third-time welding, cutting and the like are completed through a punching and discharging station, a first welding machine, a screen printing machine, a drying machine, a second welding machine, a punching and slitting station, a multi-strip-in-one mechanism, a third welding machine and transverse cutting and receiving equipment. In the whole production process, only manual point positions need to be arranged at the feeding and discharging positions, manual participation is reduced, time and labor are saved, meanwhile, fatigue caused by long-term work of workers is avoided, the production efficiency is high, and the error rate is low.

The invention relates to a control method for improving EDT roller texturing efficiency and high-surface automobile aluminum plate oil storage amount. The control method comprises the steps that (1) a single-rack cold rolling mill is adopted; (2) carrying out roller surface treatment by adopting an electrode electric spark roller grinder, wherein the roughness Ra of a working roller before roughening is less than or equal to 0.4 mu m; the roughness Ra after EDT roughening is equal to 1.95 to 2.2 [mu] m; (3) a single-rack cold rolling mill is adopted for production, the rolling oil temperature is 35 + / -5 DEG C, and the rolling oil pressure is 6.0-9.0 bar; (4) an air cushion type continuous annealing line is adopted for cleaning and solid solution aging treatment; (5) carrying out surface appearance and pit size measurement on the prepared aluminum plate by adopting a 3D optical microscope; and (6) the manufactured aluminum plate is measured through a 3D non-contact optical contourgraph. By means of the method, the requirements for the surface roughness Ra and Rpc of the automobile sheet can be met, the downstream stamping cracking risk and the corrosion spot defect caused by the too large surface pit diameter are reduced, the better high-surface automobile sheet, the higher aluminum sheet surface oil storage amount and the lower friction coefficient can be obtained, and the EDT roller texturing working time can be saved.

The invention provides a system of a pumped storage coupled compressed air energy storage underground gas storage with an air cushion type surge shaft and an operation method. The system comprises a compressed air energy storage system and a pumped storage system. The interior of the water-gas co-containing bin is divided into an upper-layer gas storage chamber and a lower-layer water storage chamber through a flexible material. The air inlet end of the compression system is communicated with the second air path; the air outlet end of the compression system is connected to the air inlet of the upper-layer air storage chamber through a first air path; a first air valve is mounted on the first air path; a gas outlet of the upper-layer gas storage chamber is connected to the expansion unit through a third gas path, and a second gas valve is mounted on the third gas path; and a detection sensor is mounted in the water-gas co-containing bin. The stability and economical efficiency of the compressed air energy storage are improved, the compressed air utilization rate is increased, the combined operation mode of compressed air energy storage and pumped storage is simplified, the combined dispatching mode of novel energy storage is optimized, and then the safety and reliability of pumped storage are improved.

The utility model relates to the technical field of slurry shield construction, in particular to an air cushion type direct-discharge slurry shield which comprises a cutterhead, a slurry bin and an air cushion bin, one side of the cutterhead is in bolted connection with the slurry bin, and the outer portion of the slurry bin is in bolted connection with a front partition plate for separating the slurry bin from the air cushion bin. A slurry discharging pipeline for discharging slag slurry in the muddy water bin out of the tunnel is inserted into the bottom of the muddy water bin, and a rear partition plate is fixed to the side, away from the front partition plate, of the air cushion bin through bolts; according to the slurry shield tunneling machine, the cutter head, the slurry bin, the air cushion bin, the air inlet pipeline, the exhaust pipeline, the slurry inlet pipeline, the right side air pressure communicating pipe, the left side air pressure communicating pipe, the right side bottom washing pipeline, the left side bottom washing pipeline, the slurry discharging pipeline and the pressure maintaining system are arranged; the pressure of slurry in the slurry bin is difficult to control, and stratum collapse is easily caused.

A pneumatic valve features a housing with an air chamber including a supply opening for compressed air, a connecting opening to an air cushion, and a discharge opening. An actuator with a movable closing element, comprising a plunger and a plate with a first sealing element, is positioned within the housing. The actuator includes a circuit board, an actuating element with an actuating portion and a bending portion, and a shape memory actuator element. In a non-energized state, the actuator element positions the actuating element to press the plunger against the supply opening, while in an energized state, it allows the first sealing element to close the discharge opening via an elastic element. A second sealing element closes the supply opening in a non-energized state and opens it under positive pressure when energized. A third sealing element, elastically connected to the second, closes the supply opening under non-positive pressure conditions.