41results about How to "Guaranteed sealing reliability" patented technology

This utility model relates to the technical field of engineering construction, and in particular to a drainage channel structure for expansion joints. It includes: an inter-column drainage channel, disposed between adjacent structural columns, with an inter-column connecting plate; clearance grooves are provided on the sides of adjacent structural columns; the inter-column connecting plate is fixedly connected to a structural beam and embedded in the clearance groove; a first inter-beam drainage channel and a second inter-beam drainage channel are respectively disposed at both ends of the inter-column drainage channel, both disposed between adjacent structural beams; each inter-beam drainage channel has a beam bottom connecting plate, fixedly connected to the bottom of the structural beam; the first inter-beam drainage channel, the inter-column drainage channel, and the second inter-beam drainage channel overlap sequentially to form a slope and are interconnected; an expansion joint waterproofing strip is provided between the beam bottom connecting plate and the bottom of the structural beam. This application has the effect of forming a second line of defense against water seepage in expansion joints, preventing indoor water seepage.

The present application relates to a heat management system and a battery, comprising a heat exchange assembly and a turbulence assembly, the heat exchange assembly comprising heat exchange components, a plurality of heat exchange flow channels are formed on the heat exchange components, the plurality of heat exchange flow channels are sequentially arranged along a first direction, and the heat exchange flow channels are used to arrange heat exchange medium; the turbulence assembly is arranged in the heat exchange flow channels, the turbulence assembly comprises a plurality of turbulence components, and the plurality of turbulence components are sequentially arranged along a second direction; at least one turbulence unit is arranged on each turbulence component; when the same turbulence component is provided with a plurality of turbulence units, the plurality of turbulence units are sequentially arranged along the first direction, and each turbulence unit is arranged in different heat exchange flow channels; at least one turbulence hole is arranged on each turbulence unit, and when the same turbulence unit is provided with a plurality of turbulence holes, the plurality of turbulence holes are sequentially arranged along the first direction. The present application changes the flow direction and state of the heat exchange medium by arranging the turbulence assembly, improves the efficiency of convective heat exchange, and meets the uniform temperature requirement.

The utility model discloses a valve assembly and air conditioner with it, valve assembly includes: valve island, the first flow passage is formed in the valve island, and the valve island has the opening in communication with the first flow passage, functional component, functional component is detachably arranged at the opening, and the sealing ring is arranged between functional component and the valve island, one of valve island and functional component has the convex part, and the other of valve island and functional component is in contact with the convex part, and the convex part is annular along the circumferential direction of the opening. According to the valve assembly of the utility model, through the sealing ring between functional component and the valve island, one of valve island and functional component has the convex part, the other of valve island and functional component is in contact with the convex part, and the convex part is annular along the circumferential direction of the opening, can guarantee the sealing reliability between functional component and the valve island through double sealing, avoid valve assembly leakage, guarantee the reliability and stability of valve assembly, reduce the maintenance frequency of valve assembly, prolong the service life of valve assembly.

The application discloses a transformer for extra-high voltage direct current transmission engineering and relates to the technical field of transformers, in particular to a transformer for extra-high voltage direct current transmission engineering. The transformer comprises a transformer body, an oil tank arranged in the transformer body, a drain valve pipe communicated with the oil tank and mounted on one side of the transformer body, a main flow guide pipe connected with one end of the drain valve pipe, and a drain valve component and a sampling mechanism arranged at two ends of the main flow guide pipe. The transformer for extra-high voltage direct current transmission engineering is provided with the sampling mechanism. When sampling, the sampling pipe body is automatically moved up to the main flow guide pipe in an arc-shaped notch opened by itself and covered by a composite sealing ring under the transmission of the lifting transmission assembly, and then the clean oil sample in the main flow guide pipe enters the inside of the sampling pipe body along the cylinder wall of the sampling pipe body in a wall layer flow, so that air is avoided from being sucked by free jet flow. In the oil inlet process, the oil pressure pushes the piston rod in the buffer assembly to move down synchronously, and the gas in the sampling pipe body is discharged through the associated second electromagnetic valve pipe, so that the detection requirement of low-bubble sampling is met.

This utility model discloses a quick-change gripper main plate, including a quick-change plate and a working plate. Both the quick-change plate and the working plate have several evenly arranged air channels inside. Connecting air nozzles communicating with the air channels are fixedly connected to the outer walls of both the quick-change plate and the working plate. A mounting block for docking with a robot is fixedly connected to the surface of the quick-change plate. A hanging plate is fixedly connected to the inner wall of the quick-change plate, and several evenly arranged steel balls are movably connected to the side wall of the hanging plate. A piston sleeve is movably connected to the inner wall of the quick-change plate, and a piston rod is engaged with the inner wall of the piston sleeve. This utility model achieves quick gripper replacement through a gas-driven piston and steel ball engagement structure, eliminating the need for complex tools and significantly improving the gripper replacement efficiency of industrial robots. Furthermore, the self-locking steel balls prevent the gripper from falling off in case of abnormal air pressure, combining advantages such as high efficiency, reliability, safety, and flexibility.

This specification discloses a heat dissipation system for an unmanned aerial vehicle (UAV), including a heat dissipation frame, an air duct cover, a cooling fan, and a dust filter. The heat dissipation frame is made of metal and includes a heat dissipation air duct body (with a first heat dissipation fin on its inner wall, overlapping the position of the air duct cover) and an outer mounting platform. The top is sealed by a first sealing gasket, and the bottom by a second sealing gasket, forming a sealed cavity. An air inlet is located at the front end of the heat dissipation air duct body, protected from water seepage by the sealing gasket. The air duct cover is fixed to the top of the frame by the sealing gasket, with a thermally conductive contact surface on its upper surface and a second heat dissipation fin on its lower surface, forming a heat dissipation path with the first heat dissipation fin. A dust filter is installed at the rear exhaust port of the heat dissipation frame, and the cooling fan is fixed to the air inlet, driving cool air to exchange heat through the two heat dissipation fins before exhausting it from the exhaust port.

The application discloses a pre-buried adjustable expansion depth expansion bolt assembly and belongs to the technical field of expansion bolts, which comprises a spring pad, a flat pad, a pre-buried sleeve, a hexagonal nut, an expansion sleeve, an expansion cone, an adjusting screw rod and a sealing end cover. In order to overcome the defects of the prior art, such as the damage to the concrete structure and the internal steel bars caused by the post-construction of the expansion bolt, the fixed and unadjustable expansion depth of the pre-buried anchor bolt, the jamming of the adjusting mechanism caused by the cement seepage due to the unreliable sealing of the plastic film during the pouring process, and the loosening of the anchoring force under long-term vibration, the application provides the pre-buried adjustable expansion depth expansion bolt assembly, so that the expansion depth of the expansion bolt on the market can be flexibly adjusted according to the actual wall thickness or the size of the decorative layer under the premise of pre-buried installation, the problems of the poor stability of the sealing end cover during the pouring process, the cement leakage caused by the poor stability of the sealing end cover, the single anchoring force between the expansion sleeve and the concrete and the insufficient long-term reliability of the expansion sleeve and the concrete are solved.

This utility model relates to a novel diaphragm solenoid valve for an inkjet printer, comprising a valve body, valve cores on both the left and right sides of the valve body, and control components for controlling the left and right movement of the valve cores. An ink outlet channel extending through one side of the outer wall is provided in the middle of the valve body. Ink inlet channels extending through the outer wall are provided on both the left and right sides of the ink outlet channel. An ink inlet port is provided between the ink inlet channel and the ink outlet channel. A valve core movable cavity is provided at both the left and right ends of the valve body. A plug port communicating with the valve core movable cavity is provided on the opposite side of the ink inlet port in the ink inlet channel. One end of the valve core is movably fitted within the valve core movable cavity. The valve core includes a valve core abutment that passes through the plug port and enters the ink inlet channel. The valve core abutment is used to seal the ink inlet port under the control of the control components. A sealing mechanism is provided between the valve core abutment and the plug port. This application, by optimizing the valve body structure, shortens the ink flow path length inside the solenoid valve and reduces the ink retention volume.

The utility model belongs to tool fixture technical field, concretely relates to a device of quick clamping and sealing furnace cover of heat preservation furnace, including counterforce frame, bolt and dog claw, one end of dog claw is fixed on counterforce frame, the other end is provided with claw hook, the screw hole on counterforce frame is screwed with bolt, and the bolt is used for supporting counterforce frame outward with fulcrum of small furnace cover top as support, and the claw hook of dog claw is hooked on the convex point of big furnace cover, clamps small furnace cover and big furnace cover, the utility model provides quick clamping and sealing device of heat preservation furnace cover, and the efficiency and sealing reliability of furnace cover installation are improved obviously through the innovative structure design, the defect that the original inclined wedge type clamping device is effectively overcome cumbersome, time -consuming, easy to loosen and leak, realizes the quick, disposable reliable clamping and sealing of heat preservation furnace cover, obviously improves work efficiency, and ensures the sealing reliability in the operation process of heat preservation furnace.

The utility model discloses a gate valve structure relates to gate valve technical field. Including the valve cover, the valve cover inside is provided with the valve plate, and the valve plate is in the valve cover and goes up and down and lifts to carry out valve opening and closing action, and the valve plate top is provided with valve drive shaft, and the valve drive shaft includes the fixed screw rod of valve plate connection and is used for with screw rod screw joint cooperation realizes the sleeve shaft for valve plate lifting, and the sleeve shaft place is fixed with the outer plastic pipe, and the screw rod place is fixed with the inner plastic pipe. The utility model discloses through the structure setting of inner plastic pipe and outer plastic pipe etc.

The application discloses a servo cut-off valve group, which comprises a first valve body and a second valve body integrated on a valve seat. Both the valve bodies are provided with valve cavities, and the valve cavities are internally provided with valve spools driven by a servo motor through a screw rod. The valve bodies are provided with outer ring channels communicated with inlet and outlet of the valve seat on the side surfaces, the outer ring channels are communicated with the valve cavities through a plurality of uniformly distributed lateral flow channels, and the inner walls of the valve cavities are further provided with inner ring channels. The longitudinal flow channels at the bottoms of the two valve cavities are communicated with each other through channels in the valve seat. When the two valve spools synchronously rise above the lateral flow channels, fluid can sequentially pass through the flow channels, and the valve is opened; when the two valve spools synchronously descend to completely cover the lateral flow channels, the valve is closed. The two valve cavities are communicated at the bottoms to form a pressure balance cavity, so that the valve spools are hardly subjected to axial thrust when the valve is closed, and high pressure is converted into sealing force in the radial direction of the valve spools, thereby fundamentally solving the high pressure leakage problem of traditional cut-off valves, and the application is especially suitable for high pressure equipment such as filter presses.

The utility model belongs to capric acid glyceride production equipment technical field, concretely relates to a kind of enzyme synthesis capric acid glyceride reaction kettle, including reaction kettle, agitator, it is characterized by: reaction kettle top is equipped with the quick sampling mechanism installed by tank top flange one, tank top flange two, quick sampling mechanism includes the pipeline system of venturi, suction tube, connecting pipe, wherein the top end of suction tube is connected to venturi throat, the bottom end of suction tube is inserted into the inside of reaction kettle, venturi two ends are connected nitrogen valve and backwash valve respectively, backwash valve connects reaction kettle inside, connecting pipe connects sample release pipe, sample release valve is installed on sample release pipe, nitrogen valve is connected with nitrogen pipeline.The flow of nitrogen in venturi safely and conveniently takes out reaction liquid, effectively improves sampling convenience and safety;Reaction liquid can be circulated in quick sampling mechanism and reaction kettle to avoid sample cross-contamination.

This invention discloses a high-reliability ball-locking bearing structure for a top hob and its assembly method. The hob includes a hob shaft, a hob wheel body, and a small-end sealing cap. A large-end sealing cap is integrally mounted on the hob shaft, and the small-end sealing cap is fitted into the hob shaft. A bearing cavity is formed between the inner bore of the hob wheel body and the journal of the hob shaft. The inner bore of the hob wheel body has a large raceway, an R-groove, and a small raceway sequentially formed. Large and small rollers are respectively fitted into the large and small raceways to form a roller bearing. The R-grooves of the hob shaft and the hob wheel body are correspondingly arranged, and balls are fitted inside to form a ball bearing. The two ends of the bearing cavity are sealed by a large-end floating metal sealing ring and a small-end floating metal sealing ring. Both the large-end and small-end floating metal sealing rings have two functional rings. This invention eliminates the bearing rings and multiple fixed sealing structures, thereby improving load-bearing capacity while solving the problem of cap loosening, achieving a synergistic improvement in high load-bearing capacity and high reliability.

The utility model discloses a sealing connector for hydrogen conveying pipe relates to hydrogen pipeline system technical field, the utility model discloses a connector main part and hydrogen pipe, the hydrogen pipe top is connected with the clamping plate, and the both sides of clamping plate bottom are all provided with recess, and the outer surface of clamping plate is connected with the anti -expansion board, and the both sides of clamping plate are penetrated with the steel wire rope lead seal, the utility model discloses the setting through the clamping plate, and the recess makes the clamping plate convenient installation on the hydrogen pipe from top to bottom, and the clamping plate n -shaped structure can form physical resistance to two nuts, and the nut is reduced because of the external force such as vibration and loosening condition, thereby better maintenance connector's sealed reliability, and the multiple reinforcing bars of the upper portion and the both sides in the clamping plate can enhance the structure rigidity, and reduce the influence of the clamping plate bending deformation to the limiting stability, effectively reduce the phenomenon that the nut loosens because of vibration.

The application discloses a waterproof sealed aluminum shell and belongs to the technical field of motor waterproof sealing. The waterproof sealed aluminum shell comprises a shell body and a rotor arranged in the shell body. A shaft rod is arranged on the rotor. A bearing is arranged at the rear end of the shaft rod. A rear end cover for assembling the shaft is arranged at the rear end of the shell body. A sealing mechanism and a rear bearing cover connected with the sealing mechanism are arranged on the outer side of the rear end cover. The shaft rod penetrates the bearing, the rear end cover, the sealing mechanism and the rear bearing cover in sequence. A fan blade is sleeved with one end of the shaft rod. A fan cover is arranged at the tail end of the shell body. The guide rod and the sealing ring are arranged in the waterproof cylinder shell. The guide rod ensures the accurate installation position of the sealing ring and limits the displacement direction of the sealing ring in the limiting groove. The reset spring is sleeved with the guide rod. The sealing ring is continuously pressed close to the rear bearing cover. The sealing force attenuation caused by aging and abrasion of the sealing ring is compensated. The effective service life of the sealing mechanism is improved.

This utility model discloses a liquid connector, which includes a female connector, a male connector, and a gasket. One end of the male connector is installed with the female connector. The outer wall of the male connector has an adjusting ring surface that surrounds it, and the adjusting ring surface is a convex arc surface that protrudes outward. The gasket is sleeved on the male connector, and the inner wall of the gasket has a mating surface that mates with the adjusting ring surface. The gasket has a first state and a second state. In the first state, the mating surface abuts against the adjusting ring surface at a first contact position, so that the male connector maintains a first angle. In the second state, the mating surface abuts against the adjusting ring surface at a second contact position different from the first contact position, so that the male connector maintains a second angle different from the first angle. Through the design of the guide sleeve, the problem of misalignment and displacement that easily occurs when the male and female connectors are docked underwater is effectively overcome, and the convenience and success rate of the docking operation of the male and female connectors are significantly improved.

The utility model relates to the technical field of transport vehicle discloses a sealing device for inlet and outlet of concrete mixing transport vehicle, including the tank body of horizontal arrangement, its front end passes through tank body support front desk support, rear end passes through tank body support back desk support, the inlet cover assembly of being equipped with tank body top, the inlet cover assembly includes. In the utility model, through design eccentric locking pin shaft and the structure of the reversible inlet cover, it is convenient and the mixing station precision butt joint loading, promotes the operating convenience, can be closely combined with the inlet sealing surface through the rotary compression plate welding spare of tightly pressing sealing rubber strip, effectively guarantees the sealing reliability when tank body rotation in the transportation process, avoids the material waste and environmental pollution caused by concrete leakage, reduces the damage of the equipment to the residual concrete hardening in the unloading stage, prolongs the equipment life, and the operation is simple and efficient, and the sealing performance and operation efficiency of loading and unloading link in the concrete transportation process are improved significantly.

The utility model discloses a three -proof lamp of good sealing, convenient maintenance, including base, circuit board subassembly, light source board, lamp shade and end sealing assembly, through modularization design and integrate driver etc on circuit board, then help circuit board is inserted in the realization whole circuit board horizontal push -and -pull activity in guide rail, so can make the installation, replacement or maintenance of driver etc core electronic component become extremely convenient, need not integral dismounting lamps and lanterns, greatly simplify maintenance process, light source board is detachably fixed below circuit board subassembly, this allows the individual replacement LED lamp pearl or whole light source board, need not dismounting electronic drive part, further promotes maintenance efficiency, end sealing assembly is with interference fit mode cover in lamp body assembly both ends and cooperates the design of memory alloy ring elastic piece not only is convenient for the overhaul and replacement of end sealing assembly, can guarantee long -term sealing reliability simultaneously.

This invention relates to the field of casting technology. It discloses a flow-controlled, slag-avoiding single-line gating and riser system and a casting mold, including a single-line gating precisely connected to the casting mold body. A core mechanism is integrated at the outlet end of the single-line gating, corresponding to the cavity inlet, to achieve flow control and anti-overflow functions. The core mechanism includes a folding mechanism and an anti-deviation mechanism, which work together to achieve precise control of the molten metal flow rate, avoiding deviation and leakage. The single-line gating interior is equipped with an anti-nodule mechanical scraping structure and a stepped slag-avoiding structure, used respectively for real-time cleaning of metal nodules on the inner wall of the gating, layering and settling of slag, and guiding the smooth flow of molten metal. The system has a reasonable structure, reliable operation, and can effectively reduce internal defects in castings, improve casting quality, and increase production efficiency.

The utility model relates to the field of biopharmaceutical technology, disclose a valve assembly, including valve body and sealing washer, wherein the valve body is equipped with the sealing washer installation groove for installing sealing washer, is equipped with one -way exhaust structure in sealing washer installation groove, it includes the air vent and elastic protective sheath, the air vent intercommunication sealing washer installation groove with elastic protective sheath, elastic protective sheath covers air vent in its inside, when the inside pressure of elastic protective sheath is greater than the outside pressure, elastic protective sheath is pressed and occurs expansion, its outer diameter is larger and exceeds the boss outer diameter, forms the gap between with boss outer wall, air vent opens, gas is discharged to the outside through the gap, realizes the pressure reduction inside container, when the inside pressure of elastic protective sheath is less than or equal to the outside pressure, elastic protective sheath contracts, sticks boss outer wall, closes side wall hole, air vent closes, prevents the outside gas or pollutant to enter the inside container, the utility model realizes the demand of equipment sterile transmission through one -way exhaust structure.

This invention discloses a vibration-damping check valve, belonging to the field of check valve technology, which solves the problem of large opening and closing vibration in traditional swing check valves. The invention includes a valve body, a main valve cover, an inlet chamber, an outlet chamber, a valve seat, a rocker arm, and a valve disc. A liftable baffle is provided on the left side of the valve seat, and a media-driven drive structure is installed on the upper left of the valve body. The drive structure includes a drive chamber, a drive plate, an anti-rotation drive rod, a drive sleeve with a helical drive groove, a gear pair, and a screw. The linear motion of the drive rod is converted into rotational motion by the drive sleeve, driving the baffle to rise and fall smoothly. A buffer plate is hinged to the lower part of the baffle, forming a buffer mechanism with a buffer cone and a buffer spring. An overflow check valve is provided at the upper end of the valve seat, connecting the closed chamber and the outlet chamber. This invention, through baffle flow control, multi-stage buffering, and overflow pressure relief, slows down the opening and closing speed of the valve disc, eliminates vibration and water hammer, prevents loosening of connecting parts, improves sealing reliability and service life, and is suitable for backflow prevention scenarios in large-diameter, high-pressure pipelines.

The utility model relates to the technical field of stop valve, concretely is the drain stop valve for high parameter power station, including the valve body, its top end is fixedly installed with the valve cover through the bolt, and the middle part of valve cover and valve body is provided with the opening and closing mechanism, the valve seat is fixedly connected in the middle part of the inside of valve body, and the cut -off mechanism is provided between the valve seat and opening and closing mechanism. The utility model discloses the cooperation of pressure self -compensation sealing structure, when medium pressure rises, greater radial compression deformation is produced to O ring under the pressure effect, and sealing specific pressure is along with system pressure automatic increase, ensures that can maintain reliable sealing under different working conditions.

The present application belongs to the technical field of nuclear power plant plug sealing, and particularly relates to a tin-bismuth alloy filling mode and a sealing detection method for nuclear power. The plug is sealed by combining tin-bismuth alloy sealing and mechanical sealing. When the fast reactor is running, the tin-bismuth alloy is in a condensed solid state, and the temperature of the condensed tin-bismuth alloy is not higher than 90 DEG C, so that the tin-bismuth alloy is completely solidified, and the plug cannot be rotated at this time. Before refueling maintenance, the alloy is melted, and the temperature is kept between 160 DEG C and 180 DEG C after melting. At this time, the plug is rotated in the molten tin-bismuth alloy through a skirt plate, so that the reactor cavity is isolated from the reactor top shield, and the refueling maintenance work is completed. The plug is sealed to the rotating surface by using tin-bismuth alloy and mechanical sealing. When the tin-bismuth alloy is in a solid state, the mechanical sealing structure can ensure the integrity of the reactor pressure boundary and prevent argon in the reactor vessel from leaking into the atmosphere. When the tin-bismuth alloy is in a molten state, the mechanical sealing structure is lifted, so that the rotation of the plug is not affected, and the sealing reliability is ensured.

The utility model discloses a gate valve structure relates to gate valve technical field. Including the valve cover, the valve cover inside is provided with the valve plate, and the valve plate is in the valve cover and goes up and down and lifts to carry out valve opening and closing action, and the valve plate top is provided with valve drive shaft, and the valve drive shaft includes the fixed screw rod of valve plate connection and is used for with screw rod screw joint cooperation realizes the sleeve shaft for valve plate lifting, and the sleeve shaft place is fixed with the outer plastic pipe, and the screw rod place is fixed with the inner plastic pipe. The utility model discloses through the structure setting of inner plastic pipe and outer plastic pipe etc.

This invention discloses a polyolefin adhesive for liquid cooling plates, a heat-bonding film, and a method for preparing the same. The polyolefin adhesive for liquid cooling plates comprises the following raw materials in parts by weight: 40-80 parts of a base resin; 5-40 parts of a tackifying resin; 1-35 parts of a flame retardant; 1-5 parts of a crosslinking agent; and 0.1-0.5 parts of an antioxidant. The base resin is maleic anhydride polyolefin resin, and the crosslinking agent includes aziridine crosslinking agent, or may also include at least one of polycarbodiimide, bisphenol A type epoxy resin, and bisphenol A type phenolic epoxy resin. This invention achieves a reduction in the curing temperature of the adhesive film and improves its performance.

The utility model provides a kind of automobile windshield strip, it is related to the technical field of automobile connecting accessory, including strip body, strip body includes first sealing portion, connecting portion and second sealing portion, first sealing portion extends and is set along the one end of strip body length direction, first sealing portion is used to be inserted between windshield and automobile front apron;Connecting portion is set along the other end of strip body length direction, and is fixedly connected with first sealing portion, and connecting portion top surface has clamping groove, for with the clamping cooperation of the insertion portion of ventilation cover plate;Second sealing portion is located between first sealing portion and connecting portion, for realizing the sealed connection of windshield bottom end edge and ventilation cover plate edge. Through the insertion type connection of first sealing portion, the detachable clamping structure of connecting portion and the elastic sealing design of second sealing portion, the modular assembly and independent replacement of strip are realized, effectively solve the technical problem that traditional adhesive strip must replace windshield assembly when maintaining.

The utility model discloses a hot gas pipe expanding mould relates to the field of automobile stamping part manufacturing, including upper die, lower die, side push plug and stripping assembly. Upper die and lower die close and form the cavity for the pipe fitting forming, and the side push plug slides through the slide rail, and one end is connected hydraulic cylinder, and the other end is conical and is built -in gas path channel, and the hydraulic cylinder drives the conical end face to block the pipe fitting, and high temperature and high pressure gas realizes the gas inflation forming through the gas path channel. The side push plug adopts split type structure, and the conical head surface nitriding treatment, and the hardness is greater than or equal to HRC60, and the wear resistance and the thermal fatigue resistance are enhanced. The stripping assembly includes pneumatic push rod and push block, and the push block pushes out the pipe fitting when opening the mould. The cavity contact surface is equipped with high temperature resistant sealing layer, and the lower die is equipped with the positioning pin, and the forming precision is ensured. The utility model discloses through optimizing sealing, demolding and positioning design, improves pipe fitting forming qualified rate and production efficiency, is applicable to the round pipe expansion process, has high versatility and reliability.

This utility model discloses an easily detachable integrated anti-overflow valve structure and its electric cooker, belonging to the field of small household appliance technology. It includes a lid with a valve seat inside, the two ends of the first inner cavity of the valve seat being connected to a steam outlet and a valve inlet, respectively. It also includes a flexible valve core, which is detachably connected to the first inner cavity of the valve seat. The flexible valve core includes a core body, with a second inner cavity formed inside. One end of the core body has a steam inlet communicating with the second inner cavity, and the other end is closed to form a first bubble-blocking part. The side wall of the core body has at least one first overflow port circumferentially distributed. This utility model, by making the flexible valve core and valve seat detachably connected, allows users to directly pull out or insert the flexible valve core as a whole without disassembling hardware fasteners or disassembling the valve body structure, facilitating cleaning. The first bubble-blocking part of the flexible valve core can block direct steam flow and diffuse through the circumferentially distributed overflow ports, effectively preventing the accumulation and overflow of high-viscosity foam.

The application discloses a kind of equipment for assembling for automobile hydrogen energy fuel cell production, it is related to hydrogen energy fuel cell production technical field, including workbench, the gantry is fixed on the workbench, the pressing mechanism for hydrogen energy fuel cell is installed on the gantry and is pressed, second cylinder is also fixed on the workbench left and right symmetry.This equipment for assembling for automobile hydrogen energy fuel cell production, by the mechanical linkage of the stacking mechanism and alignment mechanism, so that each stack one battery assembly, system is automatically executed once deviation correction action, so as to ensure that each component is righted after stacking, the component of the latter stack is taken as reference with the component that has been aligned, so that the flow channel alignment precision of final electric pile is extremely high, effectively guarantee that gas distribution uniformity and sealing reliability, and the process is fully automated, without manual intervention or complex visual detection, better satisfy actual production demand.

This invention discloses an extruder with a gradually varying orifice pitch for plastic modification, relating to the field of extruder technology. The extruder includes a main body; the main body includes a barrel, a die head communicating with the barrel, and a die communicating with the die head; the die includes a connecting part connected to the die head and multiple working parts movably sealed to the connecting part; the connecting part has a discharge port. This extruder, through a drive mechanism, rotates a rotating disk and a U-shaped plate, enabling rapid switching between multiple working parts with different gradually varying orifice pitches. It can adapt to the extrusion requirements of modified plastics of different viscosities, solving the problems of poor adaptability and cumbersome replacement of fixed gradually varying orifice pitch dies. Simultaneously, a moving mechanism drives the top column to adjust the clamping force, ensuring reliable sealing under high temperature and high pressure. It is suitable for multi-variety, small-batch production scenarios in plastic modification granulation.