437 results about "High pressure gas" patented technology

The application discloses a test device and method for simulating the impact effect of super-high-speed penetration into the ground, wherein a static load loading system is used to apply static load to the periphery of a sample to simulate the ground stress environment, and a dynamic load loading system is used to apply impact dynamic load to the top of the sample to simulate the ground impact, wherein in the dynamic load loading system, a phase change reaction kettle is used to heat liquid CO2 to a supercritical high-pressure state, a liquid charging module is used to charge the phase change reaction kettle with liquid CO2, a barrel is used to receive the high-pressure gas released by the phase change reaction kettle and form an approximately planar ground shock wave, a stress wave lens module is used to adjust the width of the ground shock wave through a stress wave lens combination and act on the sample, and a control module can control the peak pressure of the ground shock wave by regulating the heating power of the phase change reaction kettle and can control the duration of the ground shock wave by adjusting the aperture of the barrel. The application realizes controllable and high-fidelity simulation of the impact effect of super-high-speed penetration into the ground.

The utility model relates to a sealed jar disinfection device, including sealed jar, the inside rotation of sealed jar is equipped with stirring shaft, and the top of sealed jar still is equipped with drive motor, and the output of drive motor is connected with the top end transmission of stirring shaft, and the outside wall of stirring shaft still is arranged with several stirring vane to the inclination, and the inside of stirring shaft still is equipped with high temperature sterilization subassembly, and the air inlet and air outlet of high temperature sterilization subassembly are respectively connected to steam generator through high pressure gas pipe, the utility model discloses the combination of stirring and steam heating structure each other, not only can make the accumulation of dried radish each height even heating, and still can utilize the heating chamber in the inside of jar body and carry out synchronous heating, and the mode of inside and outside heating simultaneously can avoid the situation that the temperature difference exists in different parts in the jar because of the uneven heat transfer when relying on the external heating simply, ensure that all articles in the jar can carry out sterilization under the temperature of stipulation, ensure that the preserved dried radish taste keeps consistent.

This invention discloses a deep-hole machining carbide end mill with a chip removal structure, applicable to the field of end mill technology. The invention uses an air blower at the bottom of the end mill component to blow outwards high-pressure gas, effectively reducing the impact of chips on the turning capability of the end mill component. A chip removal guide plate guides the high-pressure airflow, causing the high-pressure airflow to carry the turning chips upwards along the outer surface of the guide plate. Finally, the high-pressure airflow concentrates at the chip riser, increasing the airflow force and effectively increasing the blowing height of the turning chips, allowing them to exit the deep hole. Larger turning chips are retained on the inner surface of the chip removal guide plate, effectively preventing them from blocking the upward flow of high-pressure airflow and providing a stable retention environment for larger chips, thus effectively reducing the impact of larger turning chips on the drilling capability of the end mill.

The present invention relates to a boil-off gas reliquefaction system for a ship. The boil-off gas reliquefaction system for a ship according to the present invention, whereby boil-off gas generated from a liquefied natural gas (LNG) storage tank for a ship is reliquefied, comprises: a first heat exchanger for recovering cold heat from a first boil-off gas generated in the storage tank; a multi-stage compressor for compressing the boil-off gas that has passed through the heat exchanger; a high-pressure gas line for supplying high-pressure gas that is supplied from the multi-stage compressor; a low-pressure gas line for supplying the boil-off gas, which is supplied from the multi-stage compressor, as a low-pressure gas by using a decompression valve; a second heat exchanger in which heat exchange occurs between the high-pressure gas line and the low-pressure gas line downstream of the decompression valve; and a third heat exchanger by which the boil-off gas that has passed through the second heat exchanger is cooled by means of heat medium oil of a cryogenic chiller.

This invention relates to an ultrasonic-assisted laser cleaning device for the inner wall of an air intake using negative pressure adsorption, belonging to the field of aircraft maintenance and surface treatment. It includes: a housing with an opening on one side of its working surface, and a flexible sealing member circumferentially disposed around the opening; a laser cleaning head disposed inside the housing; an ultrasonic amplitude transformer arranged in a ring around the laser cleaning area; an ultrasonic transducer connected to the ultrasonic amplitude transformer; a negative pressure suction unit connected to the housing for creating a negative pressure airflow field within the housing; and a high-pressure gas injection unit disposed opposite to the negative pressure suction unit for assisting in the formation of the airflow field. The ultrasonic amplitude transformer has a ring-shaped structure and is arranged in a ring array on the inner wall of the housing, with the ultrasonic transducer mounted thereon, converting electrical signals into ultrasonic vibrations via piezoelectric ceramics. This invention, by combining ultrasonic technology with laser cleaning, can adapt to cleaning areas with different radii of curvature, thereby achieving all-position cleaning.

The utility model discloses an advertisement lamp box cloth's spray device relates to spray device technical field, including spraying machine main part, the one side of spraying machine main part is provided with drying mechanism, and the other side is provided with cleaning mechanism, and the outside of spraying machine main part is provided with high pressure gas pump, and spraying machine main part includes side frame, spraying head and advertisement cloth. The utility model discloses through setting drying mechanism, utilizes the plugboard and the drainage plate of even distribution of installation box one side to guide the hot air current of part unable blowing to advertisement cloth to the preheating of unsprayed area, avoids hot -blast waste, and the adhesion of coating and energy utilization efficiency when the subsequent spraying have been improved, simultaneously through cleaning mechanism, with the help of hair roller rotary cleaning and the air flow of high pressure gas pump spraying combination, effectively remove the dust on the surface of picture cloth, avoid the flaw of dust in the process of spray painting, improve product finished product quality and consistency.

The application discloses a fire extinguishing bomb throwing device for a unmanned aerial vehicle, which comprises a pitch adjusting mechanism, a bomb storage and bomb conveying mechanism capable of being adjusted in pitch on the pitch adjusting mechanism, two groups of mounting pipes, a spacing adjusting plate, a conveying structure and a throwing acceleration structure, and the throwing acceleration structure comprises an acceleration connecting frame, an acceleration conveying belt assembly, an acceleration motor and an acceleration transmission assembly. The application has the advantages that the high-pressure gas launching mode is replaced by the throwing acceleration structure, the recoil force is small, the flight stability of the unmanned aerial vehicle during launching of the fire extinguishing bomb is ensured, and the safety hidden danger is reduced. Meanwhile, the spacing between the upper and lower mounting pipes is adjusted by adjusting the position of the lower mounting pipe on the spacing adjusting plate, and the throwing of fire extinguishing bombs with different specifications is realized.

The utility model discloses a kind of rock breaking devices of self-adaptive ultrahigh pressure gas can be repeatedly automatically released and hole sealing, it is related to gas fracturing technical field, the device includes: fracturer, the both ends of fracturer are respectively provided with first end cap and second end cap, the inside of fracturer is provided with reaction cabin;Pressure-increasing mechanism, is inserted in first end cap, for by the combustion of biomass foam, make reaction cabin internal air pressure rise;Piston assembly, between fracturer and second end cap, for with second end cap cooperation, release gas, to realize rock breaking;Hole sealing mechanism, located at the outside of fracturer, for preventing gas to leak out, to maintain fracturing instantaneous hole sealing integrity;Second end cap, for making gas cluster to spray out.The utility model is balanced by using the gas pressure of reaction cabin and top pressure cabin inside fracturer and the special structure of piston, more efficient completion rock fracturing is realized without installing rupture disc in fracturer and frequently disassembling replacement condition.

This invention provides an automated filling device integrating extinguishing agent and high-pressure gas filling functions, relating to the field of fire extinguishing device manufacturing, and particularly to a filling device and method for extinguishing agents and high-pressure gas. The device includes a ball screw stepper motor, a liquid collection chamber, a four-way valve, an operating lever, one-way valve 1, one-way valve 2, and one-way valve 3. The filling device uses a ball screw stepper motor to drive a liquid-pushing piston, controlling the filling amount of extinguishing agent by precisely controlling the piston stroke. The "operating lever + piston groove" design of the filling device integrates the pre-installation, positioning, and final tightening of the seals within the device. The filling device integrates the three key steps of extinguishing agent filling, high-pressure gas pressurization, and bottle mouth seal installation into one device, and achieves function switching through a core component, the four-way valve.

The utility model provides a kind of cleaning device for flue gas denitration catalyst regeneration, it is related to catalyst cleaning technical field, when using, as shown in Figure Three, multiple ventilation type high pressure gas blowing components are evenly arranged in the inside of cleaning pool main body, and multiple gas blowing ports are evenly arranged on the surface of the hollow blast pipe in the inside, after filling cleaning fluid in the inside of cleaning pool main body, as shown in Figure Two, ventilation type high pressure gas blowing component is blown by high pressure gas blowing pipe at both ends simultaneously, so that the gas blowing amount of the gas blowing port on the surface of each hollow blast pipe is consistent, so that the cleaning fluid in the inside is rapidly bubbled, so that the porous denitration catalyst placed on the upper end of support isolation component is efficiently cleaned, and the cleaning fluid is driven by ventilation type high pressure gas blowing component to rapidly clean the nitration agent in the inside of porous denitration catalyst by rapid bubbling, and the cleaning efficiency is increased.

The utility model discloses a cutting structure for straw production belongs to straw production and processing technical field, including two groups of stand, top seat and straw conveying frame, the bottom fixedly connected with electric telescopic handle of top seat has, and the bottom fixedly connected with cutting knife of electric telescopic handle, and the fixedly connected with drive motor in one group of stand's one side, and the fixedly connected with rotating shaft on the output shaft of drive motor, and the both sides fixedly connected with positioning turntable and cutting turntable on the outer wall of rotating shaft, the utility model discloses, through the cutting turntable and positioning turntable of being able to synchronous rotation of setting, and the straw is in the through placement groove sleeve connection on the positioning column, and then carries out cutting, thereby can for the straw good cutting, after cutting is completed, and drive motor controls the straw of cutting completion and rotates downward, when it reaches the lowermost, through the high pressure gas of nozzle spouts and promotes the sliding block, makes it and the straw from the positioning column and ejects, and then realizes the quick discharge of straw.

This utility model relates to the field of ink production technology, specifically to a multi-compartment automated storage system for color ink raw materials, comprising: a support frame; a pneumatic conveying box disposed inside the support frame, the pneumatic channel of the pneumatic conveying box being fixed to the support frame, and multiple openings on the top of the pneumatic conveying box; and multiple pigment storage compartments detachably connected to the support frame. The nano-pigment particle storage device proposed in this application connects multiple color pigment storage compartments to the pneumatic conveying box. A pull plate component controls the quantitative delivery of target color pigment particles into the pneumatic conveying box, and then high-pressure gas is input to transport the pigment particles to a mixing container. This method of storing and transporting pigment particles is far less costly than the existing method of storing pigment particles using organic dispersants, and by dispersing on demand, it avoids the problems of uneven concentration and clumping caused by long-term storage.

This application provides a thermal runaway guidance system based on alternating positive and negative electrode arrangement and directional pressure relief, comprising: an outer isolator with a honeycomb-structured grid plate at one end, and a plurality of heat dissipation holes evenly distributed on both side walls of the outer isolator; an inner isolator disposed inside the outer isolator; a fire extinguishing box disposed inside the inner isolator, and a plurality of battery cells arranged inside the fire extinguishing box; the battery cells are arranged in an alternating positive and negative electrode staggered manner, the pressure relief valves of each battery cell face the same direction, and adjacent battery cells are connected by fuses; a heat-sensitive fire extinguishing mechanism is provided at the positive electrode connection of at least one battery cell; the battery cells are disposed in the mounting holes of the mounting bracket, and a plurality of evenly distributed pressure relief holes are provided at the end of the inner isolator near the grid plate. This system avoids the chain reaction caused by rapid heat transfer between battery cells during thermal runaway; at the same time, it ensures that the pressure relief direction is consistent, and the high-temperature and high-pressure gas is released regularly, preventing the spread of fire and preventing impact damage to surrounding structures.

This invention belongs to the field of tire vulcanization technology and discloses a gas path system for vulcanizing media, including a bladder, a gas supply device, a low-pressure pipeline, a pressure-reducing and shaping component, a high-pressure pipeline, a pressurizing component, a heating tank, and a circulating pump. The two ends of the low-pressure pipeline are connected to the inlet of the gas supply device and the bladder, respectively; the pressure-reducing and shaping component is located in the low-pressure pipeline; the two ends of the high-pressure pipeline are connected to the inlet of the gas supply device and the bladder, respectively; the pressurizing component is located in the high-pressure pipeline; the heating tank is located in the high-pressure pipeline and between the pressurizing component and the bladder, allowing the high-pressure gas to be heated within the heating tank; the circulating pump is located on the high-pressure pipeline, with its outlet connected to the heating tank, and the outlets of the pressurizing component and the bladder connected to the inlet of the circulating pump, forming a heating and circulating branch for the gas medium. This gas path system for vulcanizing media can avoid energy loss; improve the working environment of the vulcanization workshop; prevent condensation in the pipeline; and reduce vacuuming time.

This utility model discloses a reverse-flushing negative pressure dust removal air filter assembly, including a housing, a reverse-flushing mechanism, and a dust collection mechanism. The housing contains a filter element. The reverse-flushing mechanism includes a pulse valve and a reverse-flushing pipe. The upper end of the reverse-flushing pipe is connected to the outlet of the pulse valve via a pulse connection port, and the lower end of the reverse-flushing pipe extends into the inner side of the filter element. Several reverse-flushing air outlets are sequentially opened from top to bottom at the lower end of the reverse-flushing pipe. The dust collection mechanism includes a lower support and a fan. The lower support is located below the housing and includes a lower locking seat and a negative pressure chamber. The lower locking seat is fixed to the top of the negative pressure chamber, and a dust removal hole communicating with the inner side of the negative pressure chamber is opened at the top of the negative pressure chamber. The fan is fixed to the bottom of the negative pressure chamber. This utility model uses a pulse valve to control high-pressure gas to blow towards the inner wall of the filter element through the reverse-flushing air outlet of the reverse-flushing pipe, blowing dust back into the air inlet chamber, and then into the negative pressure chamber through the dust removal hole, where it is discharged by the fan, achieving efficient dust removal.

The crude adipic acid thickening device provided in this embodiment of the invention features a central tube and a first porous tube that can move relative to each other. When blowing away the solid portion of the crude adipic acid slurry adhering to the outer filter screen, the central tube and the first porous tube are initially in a closed position. In this state, high-pressure gas cannot escape and remains inside the central tube, causing the pressure inside the central tube to continuously increase until a preset value is reached. Then, the central tube and the first porous tube move from the closed position to the open position. At this time, high-pressure gas is simultaneously and instantaneously released from various points on the first porous tube, blowing away the solid portion of crude adipic acid adhering to the outer filter screen. Compared to direct backflushing of high-pressure gas without accumulation, this embodiment of the invention achieves higher gas pressure inside the central tube. Furthermore, because multiple filter holes on the first porous tube open simultaneously, the pressure of the emitted gas is more uniform, resulting in a better blowing effect.

The utility model discloses a kind of circulating high-pressure gas filtering equipment, including filter box, the upper surface of the filter box is equipped with top cover, the outer surface of the filter box is equipped with conveying assembly, the bottom surface of the top cover is equipped with cleaning assembly, the inside of the filter box is equipped with filter assembly, the bottom surface of the filter box is equipped with collection assembly, the conveying assembly includes exhaust cylinder and gas injection cylinder.The filter assembly provided in the device can filter the gas injected into the filter box, and by the two electric push rods in the cleaning assembly, multiple spray cylinders are respectively inserted into each cylindrical filter, which can blow off the dust filtered out from the outer surface of each cylindrical filter, so that it does not need to disassemble the filter box, and the filter can be quickly cleaned. Therefore, the device effectively solves the problem of the existing device that the internal filtering device needs to be disassembled and cleaned, resulting in low filtering efficiency.

The utility model discloses a stainless steel pipe fixed length cutting sorting integrated machine, this stainless steel pipe fixed length cutting sorting integrated machine uses, places the steel pipe that needs cutting to the material placing frame top, through the first cylinder drive moving plate moves and cooperates first material ejector plate and then will steel pipe through first material guide plate and is oriented one side, through the material receiving plate and is received and place to the material guide wheel top, will steel pipe and are transported to cutting table inside and carry out cutting, after cutting, the high pressure gas that blow -off head blows out is used to the steel pipe cutting end face residual waste chip and is blown open, when cutting, the extra length steel pipe that cuts off is loose when the fixed plate clamps, falls to telescopic material guide plate and rolls to one side through telescopic material guide plate, can collect in advance in one side and place the collecting box and collect, because of cutting length difference, can pull fixed frame and move through the moving wheel below, adjust the length of telescopic material guide plate, it is convenient to carry out material guide collection to different length waste steel pipe and avoid accumulation on the ground.

The application discloses a cold plate device and a battery pack, comprising a cold plate body, the cold plate body is provided with a flow channel area, a sealing area and a pressure relief area, the sealing area is used for sealing the flow channel area, the flow channel area is used for containing a heat exchange medium, and the pressure relief area is used for being correspondingly arranged with an explosion-proof valve of a cylindrical battery; the pressure relief area comprises a pressure relief hole and a thinning area located outside the pressure relief hole, and a projection of an outer edge of the thinning area on a bottom surface of the cylindrical battery can surround the explosion-proof valve. The pressure relief area is composed of the pressure relief hole and the thinning area, so that the area of the pressure relief hole can be reduced, and the sealing connection strength of the edge of the flow channel area can be prevented from being affected due to the excessively large area of the pressure relief hole. The thinning area is weak in strength, when the explosion-proof valve of the cylindrical battery is opened for pressure relief, the explosion-proof valve and high-pressure gas sprayed out can easily damage the thinning area, so that the thinning area is collapsed, and it is ensured that the high-pressure gas in the cylindrical battery can be relieved through the cold plate device.

The vertical dry powder canister fire extinguisher provided by this utility model includes a dry powder canister, a powder outlet on the side wall of the canister, a powder outlet pipe inside the canister communicating with the powder outlet, and an air supply pipe located below the powder outlet pipe. A side branch pipe extending into the dry powder canister and equipped with a one-way valve is connected to the air supply pipe. The one-way valve includes a radial through hole on the side wall of the side branch pipe, a valve core column that can slide up and down inside the side branch pipe, a valve cover connected to the top of the side branch pipe, and a spring between the valve cover and the valve core column. This allows the outer wall of the valve core column to slide against the inner wall of the side branch pipe, and the two ends of the spring to press against the valve cover and the valve core column respectively. When the air supply pipe starts to supply air, the high-pressure gas forces the valve core column to slide to the upper working position, opening the radial through hole, allowing the dry powder to be sprayed smoothly along the powder outlet pipe. When the air supply pipe stops supplying air, the spring drives the valve core column to slide to the lower working position, closing the radial through hole and preventing dry powder from entering. The one-way valve is not prone to failure and does not affect the spraying effect of the dry powder.

This invention discloses a hot stamping die, including a die cavity and a punch. A radius (R-angle) region is provided at the connection between the die cavity and the punch. The die cavity has a main vent hole for connecting a high-pressure gas source. The radius of the die cavity has a perforation structure, comprising: a main array of perforations and a secondary array of perforations. The main array of perforations communicates with the main vent hole and extends towards the radius of the die cavity; the secondary array of perforations is located on the radius of the die cavity and communicates with the main array of perforations; or, the outlet is directly located on the main array of perforations on the radius of the die cavity. This invention, by providing a perforation structure in the radius of the die cavity and introducing high-pressure gas, forms an air cushion between the sheet metal and the die, reducing or eliminating direct contact between the sheet metal and the die, thereby reducing friction and wear, avoiding defects such as scratches on the part surface, improving the surface quality of the part, reducing wear on the die surface, and extending the service life of the die.

The application relates to the technical field of wind tunnel equipment, and discloses a variable-Mach-number nozzle device which comprises an external shell, a nozzle shell, adjusting components and pressure equipment; the nozzle shell is arranged in the external shell and is provided with a pressure adjusting cavity and an airflow channel; the bottom wall of the pressure adjusting cavity is a flexible wall I, and a flexible wall II is arranged between the pressure adjusting cavity and the airflow channel; the adjusting components are arranged in a plurality of groups, the fixed ends of the adjusting components are connected to the nozzle shell, the adjusting ends of the adjusting components penetrate through the flexible wall I and are fixed to the flexible wall I, and the adjusting ends are connected to the flexible wall II; the pressure equipment is connected to the pressure adjusting cavity of the nozzle shell and is used for adjusting the pressure in the pressure adjusting cavity; the passive deformation form is adopted, the pressure change is realized by extruding cooling water with high-pressure gas, the moving end of the adjusting component is driven to move through the flexible wall I, the flexible wall II is adjusted, and the deformation of the gas channel is completed; only the cooling water pressure is adjusted during the adjusting process, the adjusting amount is small, the elements are single, and the adjusting precision is high.

This invention discloses a rotary impact cleaning device for dust treatment filter cartridges, relating to the field of dust filtration technology. It includes a housing and a top cover. The top cover is fixedly installed on the top surface of the housing. A gas drive pipe is provided on the top surface of the inner wall of the top cover, and a rotary bearing is fixedly installed on the inner wall of the gas drive pipe. This invention uses pneumatic blades to drive the hollow cleaning pipe to rotate and impact the filter cartridge with a ring. Simultaneously, high-pressure gas is injected directionally through the cleaning holes. A lever engages with the driven teeth at the end of the filter cartridge in a one-way manner, and the energy storage and rebound of the torsion spring in the positioning ring achieves the effect of a step-by-step reversing rotation and a secondary impact from the reverse aftershock after the filter cartridge is struck. This overcomes the shortcomings of existing technologies, which can only strike one side of the filter cartridge for a long time, resulting in a significant difference in cleaning effect between the impacted and unaffected sides, and lack of immediate follow-up airflow to quickly blow away the dust. This leads to a large amount of dust flowing back into the cavity and re-attaching to the outer wall of the filter cartridge, resulting in extremely low cleaning efficiency.

The application provides a compressor tester provided with an axial flow turbine and relates to the technical field of compressor testing. The tester is provided with an axial flow turbine between the exhaust end of a compressor cylinder and the air inlet end of an exhaust cylinder. The axial flow turbine comprises turbine moving blades and turbine adjustable guide vanes. The turbine moving blades are arranged on the extension section of a rotor and are used for rotating and working under the action of high-pressure gas to reduce the exhaust temperature and generate reverse axial force. The turbine adjustable guide vanes are arranged on the extension section of the compressor cylinder and are used for adjusting the airflow direction and flow rate entering the turbine moving blades. The tester is also provided with a bleed air system and an automatic adjusting and control system. The application utilizes the working of the axial flow turbine under the action of high-pressure exhaust to reduce the exhaust temperature, reduce thermal stress, and generate reverse axial force opposite to the axial force direction of the rotor. The active and accurate control of the axial force is realized through the coordinated adjustment of the adjustable guide vanes and the bleed air system, the equipment structure is simplified, and the energy consumption and maintenance cost are reduced.

This invention discloses a waterproof and breathable automotive signal light assembly and its sealing process, relating to the field of automotive signal light technology. It includes: a signal light body with LED beads installed inside; a signal light cover installed on one side of the signal light body, sealed together using a sealing process; and an exhaust mechanism located on one side of the heat dissipation mechanism for balancing the internal and external air pressure of the signal light cover. This device achieves dynamic pressure balance and thermal management based on the principle of thermally induced pressure change and unidirectional fluid control: when the LED operates, causing an increase in internal temperature and pressure, the thermally expanded gas overcomes the pre-tightening force of the first elastic element, opening the exhaust one-way valve core and entering the diversion chamber through the exhaust channel. At this time, the intake one-way valve is normally closed, and the high-pressure gas is only discharged through the top connecting pipe to prevent the sealing structure from deforming under pressure; while achieving pressure balance, it prevents direct intrusion of humid air.

This utility model belongs to the field of steel manufacturing technology and discloses a descaling device, including a frame base, which includes a pressure roller frame and a motor frame; a roller frame is also provided on the pressure roller frame; it also includes a lower roller and an upper roller arranged parallel to the lower roller; the lower roller is fixed to the pressure roller frame by a bearing seat, and its end near the motor frame is connected to the pressure roller motor through a coupling, and the pressure roller motor drives the lower roller to rotate; it also includes a vertical adjustment device for adjusting the vertical movement of the upper roller and a blowing spray device. The lower roller drives the material forward, and the upper roller squeezes and rolls up the oxide scale on the surface of the material. When the material advances to the blowing spray device, high-pressure gas is sprayed out from the blowing spray device, blowing away the oxide scale rolled up on the surface of the material, and removing the oxide scale by the impact force of the gas. The vertical adjustment device allows the upper roller to be adjusted in the vertical direction through the elastic force of the spring on the lower spring sleeve.

This utility model relates to the field of laser welding technology and proposes an underwater welding laser head, including a stainless steel tube cover; a connecting plate fixedly connected to the inner wall of the stainless steel tube cover, one end of which is fixedly connected to the end of the laser welding head; a spray disc fixedly connected to the lower end of the inner wall of the stainless steel tube cover, with spray holes at equal angles at the bottom of the spray disc; a connecting pipe extending to the outside of the stainless steel tube cover fixedly connected to one side of the top of the spray disc, with the bottom end of the connecting pipe communicating with the interior of the spray disc; and a protective cover movably connected to the bottom of the stainless steel tube cover, with fixing components at the top of the protective cover and the bottom of the stainless steel tube cover. Through the spray disc, connecting pipe, and spray holes, an umbrella-shaped protective gas curtain can be sprayed out, ensuring that a small area below the end of the laser welding head is free of water, facilitating welding operations. At the same time, high-pressure gas blows away welding fumes, ensuring smooth welding.

This invention discloses a centrifugal pump impeller structure for preventing clogging of chemical media containing solid particles, relating to the technical field of centrifugal pump impeller structures. It includes a centrifugal pump body with a pump chamber and an inlet and outlet chamber communicating with it. Adjustment chambers communicating with the outlet chamber are provided on both outer walls of the centrifugal pump body. A rotating shaft is rotatably mounted on the centrifugal pump body along the axis of the adjustment chamber. A double-suction impeller located within the pump chamber is detachably mounted on the rotating shaft. The double-suction impeller has multiple spirally arranged blades, with inlet channels for media passage formed between adjacent blades. By providing cylindrical protrusions on both sides of the double-suction impeller, and using a first air nozzle corresponding to the inlet channel and a second air nozzle corresponding to the outlet channel, along with a purging component to deliver high-pressure gas, active purging of the inlet and outlet channels is achieved. This allows for real-time cleaning of solid particle deposits on the blade surface, inlet and outlet channels, and in the gaps, preventing impeller clogging.

The application provides a propellant supplementing full-process verification test system, which comprises a test table fixed base, a moving platform arranged on the test table fixed base, the position of the moving platform relative to the test table fixed base being adjustable, a docking mechanism comprising a docking mechanism active end and a docking mechanism passive end, the docking mechanism active end being fixedly arranged on the test table fixed base, and the docking mechanism passive end being fixedly arranged on the moving platform, the propellant supplementing pipeline being in communication when the docking mechanism active end and the docking mechanism passive end are coupled, a pressure sensor being arranged in the propellant supplementing pipeline, and the pressure sensor being used for monitoring the air pressure in the propellant supplementing pipeline in real time. The application solves the problem that the full-process task function verification of mechanism docking, propellant supplementing, high-pressure gas supplementing and mechanism separation cannot be verified in the prior art.

The utility model provides a kind of ink recovery device, it includes inkjet along ink flow path sequentially arranged, recovery tank, recovery pump, first filter, ink container, ink supply pump, second filter and ink cartridge, inkjet includes nozzle and nozzle mounting seat, nozzle mounting seat has inkjet cavity and located in the recovery cavity and air inlet cavity of inkjet cavity opposite two sides, air inlet cavity is configured as the high-pressure gas that is blown to the inkjet end of nozzle with the directional airflow of inhaled, and residual ink of inkjet end is swept to recovery cavity, recovery cavity is connected with recovery tank.This ink recovery device of the utility model not only realizes ink recycling, but also realizes nozzle self-cleaning function, avoids the operation requirement of traditional manual wiping.