252 results about "Closed cavity" patented technology

The utility model discloses a kind of ceramic finger thermal shock deterioration experimental device, comprising: first box, heating unit is arranged, for heating target product;Second box, linear guide is arranged, for moving target product;Wherein, the target product end is detachably connected with the linear guide by connecting block. In the utility model, box is divided into cold and hot two groups of closed cavities, heating is carried out by heating unit arranged in the heating cavity of first box, and linear guide in the cooling cavity of second box is used to transfer target finger during testing, various operating conditions in actual working process can be simulated, whether fracture occurs is monitored by connected sensor, and then whether product is truly in line with actual service life requirement is accurately evaluated.

This invention provides a directional filling device for seepage channels in dikes, comprising a main mounting frame, a fixed connecting seat fixedly mounted at the bottom of the main mounting frame, a central connecting rod fixedly mounted at the lower end of the fixed connecting seat, and a detection drive seat fixedly mounted at the lower end of the central connecting rod. The detection drive seat has an outward-opening detection installation cavity at its bottom, and a movable detector lifting seat is located within the detection installation cavity. This invention integrates a geological detection sensor and a lifting drive mechanism to achieve simultaneous exploration and filling, accurately identifying the geometric parameters of the seepage channel and directional filling along the channel's centerline, avoiding blind grouting and material waste. This invention employs a bag-type sealing mechanism to first isolate the section to be filled into a closed cavity before low-pressure grouting, eliminating the need to rely on material expansion force to split the soil and avoiding secondary disturbance to the dike body. It is particularly suitable for the reinforcement of dikes with defects.

The application discloses a mouth cover executor and relates to the technical field of automobile parts, which comprises a box body, a box cover, a shaft sleeve and a worm nut. The box cover is installed on the box body, and the box body and the box cover form a closed cavity. The inside of the box body and the box cover is provided with a motor, a worm, a worm nut, a rotating shaft and a shaft sleeve. The output end of the motor is coaxially connected with the worm. The worm is in meshing transmission with the worm nut. The worm nut is in transmission connection with the rotating shaft. The shaft sleeve is arranged outside the rotating shaft and is fixedly connected with the box body. The mouth cover executor has high integration of the overall structure, compact size of the box body and the box cover, and lightweight support design of the shaft sleeve, which further reduces the volume and weight, perfectly adapts to the narrow layout space of the charging port of a new energy vehicle, reduces the vehicle weight and energy consumption, conforms to the design trend of miniaturization and lightweight of vehicle-mounted parts, and is compatible with multiple vehicle platforms.

The utility model provides a kind of functional film, belong to functional film technical field.The utility model's functional film includes base material layer and the closed cavity inlay in the base material layer.The utility model's functional film only includes a layer of base material layer, more light and thin, optical absorption is lower, heat transfer performance is better;And relative to laminated structure, there is no interface mismatch risk, low in cost, there is no laminated interface, avoid delamination caused by moisture penetration under high temperature and high humidity environment, higher environmental aging resistance, and need not laminating.The utility model's functional film in solar cell field, can improve the structural stability of heat dissipation and packaging, improve the power generation efficiency of solar module, long-term working life and environmental tolerance, in display field, its light and thin, flexible and non-heterogeneous characteristics make it have good application space in precision optical device.

The application relates to the field of municipal facilities, in particular to a municipal inspection well cover which comprises a cover body and a frame body, the frame body is provided with a communication cavity, a closed cavity is arranged on the inner wall of the communication cavity, a step surface is formed at the joint of the closed cavity and the communication cavity, the cover body is rotationally connected to the inner wall of the closed cavity, a locking assembly is connected to the frame body, the locking assembly comprises a magnetic block one and a magnetic block two, a sliding cavity for the magnetic block one to slide is arranged on the surface of the frame body, the sliding cavity is communicated with the closed cavity, a fixing groove is arranged on the surface of the cover body facing the sliding cavity, and the magnetic block two is connected to the inner wall of the fixing groove. In the application, the magnetic block one and the magnetic block two are arranged, the magnetic block two attracts the magnetic block one to slide towards the direction close to the fixing groove, the end of the magnetic block one is embedded into the fixing groove to form fixation, the cover body is not easy to separate from the step surface, the surface of the cover body abuts against the step surface and closes the communication cavity, the closing of the inner cavity of the inspection well is realized, pedestrians are not easy to fall into the inner cavity of the inspection well, and therefore the safety of the use of the inspection well is improved.

The utility model provides a kind of baking finish device for baking finish door, including the baking finish chamber unit being equipped with closed cavity and continuous circulation track system, contain multiple along track movement and be equipped with detachable workpiece clamping mechanism's suspension conveying assembly, and contain along internal conveying section interval distribution solidification module's baking finish operation unit, track system is closed loop power track, workpiece clamping mechanism can adapt to different thickness workpiece, baking finish chamber is equipped with gas circulation system, and solidification module is hot air heating equipment.The device realizes efficient continuous production, stable clamping, good environmental control and accurate solidification, improves baking finish door production efficiency and quality.

A vessel for transporting a living organ includes a container having an open top end and a closed bottom end, and a lid configured to selectively cover the open top end of the container and seal an inner chamber. The container includes a rigid outer housing, a rigid inner housing positioned within the rigid outer housing, and an insulating layer. The rigid inner housing defines the inner chamber, which is configured to hold a living organ. The rigid inner housing and the rigid outer housing define a closed cavity therebetween, in which the insulating layer is positioned.

The utility model discloses a flue protection device belongs to building engineering technical field, including, the protection subassembly of setting in the flue outside, the both ends of protection subassembly are connected with the roof and floor of the house of current layer respectively, the sealing assembly is set respectively in the connecting place of protection subassembly and the roof and floor of house, the sealing assembly includes, the pouring sealing assembly and the hole mouth packaging assembly, the pouring sealing assembly is connected with the roof and protection subassembly of house respectively, the hole mouth packaging assembly is connected with the bottom plate and protection subassembly of house respectively, the connecting plate in the protection subassembly of the application sets up and the protection cylinder are through the close adhesion of reinforcing bar and the tenon and mortise cooperation, reduce the initial gap, the pouring sealing assembly utilizes the sealed cavity and the sealing strip to form the closed cavity, and the concrete grout can be poured into and fill the cavity from the flue and the gap between the hole, and the integral sealing body is formed at the roof junction, and the smoke leakage path is completely blocked.

This utility model belongs to the field of lubrication and sealing of drive axles in engineering machinery, and in particular, a semi-sealed lubrication structure for the front-stage reduction gearbox of an engineering machinery drive axle. It includes a connecting housing for the front-stage reduction gearbox, the exterior of which is connected to the main reducer via a bearing housing. Inside the connecting housing and the main reducer, a spiral bevel gear pair is installed for power transmission. A bearing is located between the spiral bevel gear pair and the bearing housing, and an internal gear ring is fitted onto the spiral bevel gear pair. An oil retainer ring is provided within the oil reservoir, comprising an annular portion and a cylindrical portion. The annular portion covers the lubricating oil hole, and the cylindrical portion abuts against the gear ring portion of the internal gear ring. This utility model adopts a semi-closed cavity structure, where the axle oil and the primary transmission oil are not completely isolated, achieving a certain heat dissipation effect. Simultaneously, it retains a semi-isolated oil cavity, preserving the fluidity of the lubricating oil. The structure is simple and the cost is low.

This utility model discloses a wire harness plug airtightness testing device, belonging to the field of automotive wire harness testing technology. The device further includes a closed cavity covering the outside of the testing module; a sandbox is fixedly connected to the inner side of the testing box; a sealing sleeve is fixedly connected to the upper end of the sandbox; a material pump is installed on the outside of the sandbox; the input end of the material pump is fixedly connected to the output end of the sealing sleeve; the output end of the material pump communicates with the inner side of the closed cavity. By setting up a sandbox, a material pump, and a closed cavity, and utilizing the colored glitter fine sand installed inside the sandbox, fine sand can be poured in, making the breaks and gaps on the plug more obvious. Since the fine sand is easy to clean, it has little impact on the plug itself. After simple cleaning, it can be directly classified and proceed to the next process, improving testing efficiency and making it more practical.

A bipolar battery (10) and an electric apparatus, the bipolar battery comprising an encapsulation housing (100), a first current collector (221a), a second current collector (221b), a plurality of battery cells (200), and communication members (20). Each battery cell (200) forms a closed cavity (230), and a respective communication member (20) is connected to at least part of the closed cavity (230); the communication member (20) comprises a lead-out channel (21); one end of the lead-out channel (21) is in communication with the closed cavity (230), and the other end extends out of the closed cavity (230); and the communication member (20) has a first state in which the closed cavity (230) is in communication with the outside and a second state in which the lead-out channel (21) is closed. At least some of the communication members (20) can be in communication with each other.

The application discloses a power battery lifting appliance with a fire-retardant function, and relates to the technical field of power battery production equipment. The lifting appliance comprises a rack, a first moving mechanism, a second moving mechanism, a safety mechanism and a locking mechanism. The first moving mechanism drives the second moving mechanism to move horizontally, and a supporting rod of the second moving mechanism supports the battery from the bottom. The safety mechanism is located above the supporting rod, and an insulating part of the safety mechanism is provided with a plurality of insertion grooves for accommodating battery electrodes and surrounding the electrodes to form a closed cavity. An air duct is arranged in a fixing plate, and the air duct is connected with an air extraction device and an inert gas source, so that the cavity can be exhausted and inert gas can be injected into the cavity to form a fire-retardant environment. The lifting appliance is stably carried through mechanical clamping and lifting, and the electrodes are actively protected by insulation and atmosphere control, so that the risk of short circuit, arc and fire is effectively eliminated, and the lifting appliance is suitable for safe transfer of battery modules in a state that electrodes are exposed.

The utility model provides a kind of LED emergency T bubble lamp, it includes: lamp shade, lamp cup, LED light source device, it further includes: battery pack component, isolator cover, wherein the LED light source device cover is connected at lamp cup opening, to define closed cavity in lamp cup, connecting component is equipped in the closed cavity, the isolator cover is housed in closed cavity, with connecting component mating, to isolate isolating cavity in closed cavity, fixed piece is equipped in the isolating cavity, the battery pack component is housed in isolating cavity and with fixed piece mating, to keep interval with isolator cover inner wall, the lamp shade is connected with lamp cup, cover is connected in the light direction of LED light source device. Whereby for the battery pack component in T bubble provides suitable working temperature environment, whereby ensure the life and endurance of battery, to improve the life and reliability of product as a whole.

The utility model relates to a bearing frame structure for boiler feed water pump, the bearing frame structure includes: bearing frame body, bearing frame cover, bearing frame end frame and reinforcing rib board, bearing frame body and bearing frame cover are welded together, bearing frame end frame and bearing frame body are welded together, reinforcing rib board and bearing frame end frame, bearing frame body are welded together, and after bearing frame body and bearing frame cover are welded, form a closed cavity between the two, the bearing frame body is provided with cooling water inlet hole and cooling water outlet hole, and cooling water inlet hole and cooling water outlet hole are communicated with the closed cavity and the outside. The bearing frame structure for boiler feed water pump provided by the utility model can not only meet the needs of structure and strength, but also can play the role of pressure relief, cooling and the like.

The application discloses a kind of full-automatic battery tray welding device, it is related to welding equipment technical field, including welding platform and welding robot, tray is equipped on welding platform, reinforcing rib is welded in the bottom of tray, and welding plate is fixedly installed on welding platform;The top surface of welding plate is provided with the guide groove matched with reinforcing rib, and the outer periphery of the top surface of welding plate is provided with the floating type sealing ring assembly for forming closed space with the edge of tray;Cooling air inlet structure on left side and suction negative pressure structure on right side are symmetrically arranged in welding plate, and cooling air inlet structure and suction negative pressure structure are communicated with guide groove by guide pipe, and suction negative pressure structure includes negative pressure generator, for pumping air in guide groove to maintain negative pressure vacuum environment, and tray is vacuum adsorbed and fixed on welding plate.The application adopts floating type sealing ring assembly, constructs stable closed cavity between tray and welding plate, forms continuous vacuum adsorption environment by relying on negative pressure generator, and forms negative pressure cavity on the bottom of tray to be adsorbed.

The present application provides a kind of sputum suction device, including suction pipe, liquid collection bag, negative pressure pipe, push-pull assembly, shielding assembly and connecting assembly;Suction pipe one end and negative pressure pipe communicate, and the lateral wall of suction pipe and liquid collection bag communicate;Negative pressure pipe is equipped with vent, shielding assembly is slidably arranged on the outer wall of negative pressure pipe, and can shield vent;Push-pull assembly is slidably arranged in negative pressure pipe, and can form closed cavity with the inner wall of negative pressure pipe;Connecting assembly one end and push-pull assembly are connected, the other end is placed on the outer wall of negative pressure pipe, and is kept away from shielding assembly;Pull push-pull assembly outward, and connecting assembly can drive shielding assembly to slide.The above-mentioned sputum suction device can reduce the pressure generated to suction pipe when pushing inward, and then reduce the situation that sputum in suction pipe is pushed back into the body of patient.

The utility model discloses a truck roof drainage cover that can store things, which comprises a bottom plate, a back plate, a flow guide plate and two side plates, the back plate is installed on the bottom plate, the two side plates are installed on the left and right sides of the bottom plate, the flow guide plate is installed above the two side plates, the bottom plate, the back plate, the flow guide plate and the two side plates enclose a closed cavity, a taking window is formed on the bottom plate and the two side plates, and a window door that can close and open the taking window is installed at the taking window. The device can improve the storage space of the vehicle and facilitate the driver to place the articles.

This invention relates to the field of steam appliance technology and discloses a novel steam flow channel structure, comprising a closed cavity formed by assembling a base plate, a mounting frame, a cover plate, a frame, and a top plate. The closed cavity contains a flow channel for water flow and vaporization. At least one water-blocking rib is provided on the inner wall of the flow channel. This rib obstructs and impacts the water as it flows through, prolonging the water's residence time within the channel and promoting the refinement of water molecules. Through the inverted fish-scale-shaped water-blocking rib structure, as the water flows within the channel, it continuously collides with and rebounds against the ribs, slowing the water's forward speed and increasing the contact time between the water and the inner wall of the channel. Simultaneously, the hook-shaped structure causes secondary collisions between water molecules after initial impact, breaking large water molecule clusters into smaller clusters, making it easier for the water to absorb heat and complete vaporization, thus improving vaporization efficiency.

The present application relates to the field of aircraft blade structure design and manufacturing, in particular to an integrated two-blade fixed-pitch blade and a processing method thereof. A bushing and a chopped fiber preform are integrated at a blade root portion, the blade is connected with a rotor shaft through the bushing, and an outermost portion of the blade root portion is wrapped by a skin formed by a fiber reinforced composite material; the skin wrapped on an outer portion of the blade airfoil section is extended from the root skin; the blade is solidified with a long strip-shaped beam arranged along a center line of the blade on inner surfaces of upper and lower airfoils of the skin; a reinforcing rib is arranged inside the blade airfoil section, and forms a double-closed or multi-closed cavity structure with the skin; other regions inside the airfoil section are filled with foam.

The utility model relates to a relay structure. A high voltage relay structure of cooling and pressure adjustment, including the bottom plate, install the cover on the bottom plate, install the static contact piece on the cover, install the push rod structure and the movable contact piece in the cover, push rod structure drives movable contact piece axial movement, the cover forms a closed cavity, install one inside cover on the bottom plate, the inside cover separates the closed cavity into the outer cavity and the inner cavity, the position of movable contact piece and static contact piece meet is located in the outer cavity, the closed cavity of inside cover formation is the inner cavity, install at least one constant pressure valve on the inside cover. The utility model provides a high voltage relay structure of cooling and pressure adjustment of simple structure can carry out cooling and pressure reduction to high pressure chamber, prolongs the service life, reduces the failure rate, solves the technical problem that the high voltage relay of prior art can only rely on product self heat dissipation, and heat dissipation is slow, influences product service life and stability.

The utility model discloses a mine valve with dust removal structure, including the valve body, the lateral surface of valve body is equipped with the opening, the opening inside sliding is equipped with the gate, the gate is connected with screw rod drive mechanism, the lateral surface fixed of valve body is equipped with the dust cover, the utility model discloses compared with prior art has the following benefits: the utility model discloses a mine valve with dust removal structure, has fixedly installed the dust cover on the lateral surface of valve body, has completely wrapped the gate and screw rod drive mechanism, forms the closed environment, prevents the dust contact of drawing when to screw rod. In addition, the one end of gate away from valve body additionally has added the baffle, the top of baffle still has fixed the sealing block of sliding contact with the inner surface of dust cover top, thereby makes the dust that gate took out is isolated in the closed cavity that the top of gate, baffle, dust cover and the lateral surface of valve body constitute, avoids the dust contact to screw rod, further strengthened dustproof effect.

This application discloses a food processing machine with interchangeable air ducts, centrifugal cooling, and axial cooling. The interchangeable air duct food processing machine achieves rapid switching between centrifugal and axial flow impeller systems through the modular design of the first and second air duct covers. It can adapt to food processing machines with different heat dissipation requirements and different noise levels without the need for overall modification of the air duct structure, thus reducing modification costs. In centrifugal impeller mode, the third air inlet serves as an auxiliary air inlet, increasing the air intake of the closed cavity, improving heat dissipation, and reducing noise. In axial flow impeller mode, the second air inlet becomes an auxiliary air inlet, increasing the air intake of the closed cavity, improving heat dissipation efficiency, and enhancing environmental adaptability. Furthermore, the coordinated operation of multiple air inlets can maintain a stable air intake in low-pressure environments.

The utility model relates to the technical field of smart home equipment, more specifically to a compact intelligent curtain motor, including shell frame and Z shape bottom shell, shell frame is used for with curtain rail assembly, and Z shape bottom shell is located shell frame bottom and is formed with shell frame jointly closed cavity, the lower left corner of shell frame is equipped with square corner, is used for with curtain rail plug -in assembly cooperation realizes horizontal positioning, including shell frame and Z shape bottom shell, shell frame is used for with curtain rail assembly, and Z shape bottom shell is located shell frame bottom and is formed with shell frame jointly closed cavity, the lower left corner of shell frame is equipped with square corner, is used for with curtain rail plug -in assembly cooperation realizes horizontal positioning etc. The utility model passes through the three -dimensional nesting design of Z shape bottom shell and shell frame, and the motor, the speed reducer, the clutch and the power module are arranged vertically in layers in the very small space, solve the installation problem of traditional curtain motor in the narrow rail space, reach the effect of miniaturization, high reliability and easy deployment.

An optical module packaging structure comprises an upper shell and a lower shell, the upper shell and the lower shell form a closed cavity, a plurality of devices are packaged in the cavity, the devices comprise a circuit board, an optical emission assembly, an optical-electricity conversion assembly and an optical fiber constraint clamp, the circuit board is arranged on the lower shell, the optical emission assembly, the optical-electricity conversion assembly and the optical fiber constraint clamp are all arranged on the circuit board; there is a space for optical fiber disc fiber between the optical emission assembly and the optical-electricity conversion assembly, the optical fiber constraint clamp is arranged in the space, the optical emission assembly comprises two light source assemblies, an optical combining assembly and an optical splitting assembly, the optical-electricity conversion assembly comprises two optical modulators, a heat sink and a signal processor, the two optical modulators and the signal processor are sequentially arranged at the far ends of the two light source assemblies. An optical module packaging method is also proposed. The present application optimizes the layout of the light source assembly and the optical modulator through independent light sources, and optimizes the layout of the fusion fiber joint and the optical fiber after fusion, reasonably arranges the positions of the devices and the optical fiber, and realizes the optical module for long-distance and high-speed transmission.

The present invention provides a high-strength lightweight roll-formed profile, which is a closed cavity body with three closed cavities formed by welding and combining an enclosing member and an embedding member; the enclosing member is a rectangular cavity with an opening on one side formed by symmetrically bending a second plate; the embedding member is a "C" - shaped bending member formed by symmetrically bending a first plate. The present invention has three closed cavities, which can effectively improve the strength, rigidity and bending resistance of the material, and can also quickly transfer and buffer forces when being impacted. When used as an automobile anti-collision beam or a side beam of a battery case, it can ensure the safety of the automobile. The present invention also provides a processing method and application of the profile. By gradually forming and parallel processing in an inside-out manner, the number of forming groups is small, the equipment investment is small, and the floor space is small; the forming process is simple, there is no forming blind angle, and each bending angle can be controlled; the forming accuracy of the product parts is high, the cumulative error is small, and the application is wide.

The application relates to the field of laboratory instruments, and provides a laboratory acid cylinder. The laboratory acid cylinder comprises an outer cylinder, an inner cylinder and a cylinder cover, the cylinder cover is buckled at the upper opening of the outer cylinder to form a closed cavity, the inner cylinder is placed in the closed cavity, a first communication hole is arranged in the bottom wall of the inner cylinder, a strip-shaped second communication hole is arranged in the side wall of the inner cylinder, the second communication hole extends along the height direction of the inner cylinder, and an acidic solution in the outer cylinder enters the inner cylinder through the first communication hole and the second communication hole. The laboratory acid cylinder provided by the application can effectively solve the problem of low cleaning efficiency of the laboratory acid cylinder in the prior art and improve the convenience of using the acid cylinder.

The application discloses a kind of assembled precast column reinforcing bar precision positioning and high-efficiency warehouse sealing device and its construction method, belong to assembled building construction technical field, including positioning plate, warehouse sealing bottom plate, warehouse sealing side plate, fixed sheet, embedded bolt and side plate connecting bolt;Positioning plate passes through reserved reinforcing bar by reinforcing bar hole, all reserved reinforcing bars are uniformly constrained and accurately positioned before floor concrete pouring;Warehouse sealing bottom plate and warehouse sealing side plate are welded into L-shaped combination, after floor concrete pouring, it is lowered to floor and fixed, form the closed cavity around the bottom of precast column.The application integrates reinforcing bar positioning and column bottom warehouse sealing, reinforcing bar position deviation can be controlled within ±2mm, without later strong correction;Significantly improve reinforcing bar positioning accuracy, warehouse sealing efficiency and grouting density, eliminate structural safety hazard, device can be reused, construction cost is low, short construction period, applicable to the construction of precast column in various assembled concrete structures.