1016 results about "Injection air" patented technology

The invention relates to the technical field of smashing, and discloses a cerium oxide airflow smashing device and a production technology.The cerium oxide airflow smashing device comprises a base, four supporting legs arranged at equal angles are arranged on the base, a first tank is connected to the supporting legs, and an air injection mechanism used for spraying high-pressure airflow and driving materials to collide with one another to be smashed is installed in the first tank; a feeding pipeline positioned above the air injection mechanism is mounted on the first tank body; the inner wall of the first tank body is provided with four cooling assemblies which are arranged at equal angles, the upper port of the first tank body is connected with a second tank body through a flange, the second tank body is provided with a grading mechanism and a discharging pipeline corresponding to the grading mechanism, and the upper port of the second tank body is provided with a top cover; according to the device, efficient production is achieved through multi-dimensional innovation, a double-layer S-shaped cooling flow channel dissipates heat quickly, and high-temperature agglomeration of materials is avoided so as to guarantee stable physicochemical properties; and the four groups of opposed nozzles form a vortex field, so that the particle size refining rate of the material is more than 90%, and the energy consumption is reduced by 35%.

The invention belongs to the technical field of permanent magnetization remanufacturing, and particularly relates to a permanent magnetization regeneration method for a waste motor of copper alloy wire processing equipment, and the method comprises the steps: disassembling a waste asynchronous motor, and reserving a case, a stator, a rotor core and a rotating shaft which are not damaged; the specifications of the air injection channels are determined according to the diameter of the rotating shaft, more than two air injection channels are arranged on the rotating shaft at equal-angle intervals, and then the rotating shaft is installed in the machine shell; the rotor core is split to obtain steel sheets, and permanent magnet grooves, magnetic isolation air grooves and air injection channel grooves are formed in the steel sheets; the permanent magnets are assembled in the permanent magnet grooves, then the steel sheets are laminated according to a first rule to obtain a rotor, and then the rotor is assembled to the rotating shaft; a rear end cover of the machine shell is removed, a heat dissipation machine cover is manufactured according to the diameter of the rear end cover, a bearing groove and an air outlet hole are formed in the heat dissipation machine cover, and then the heat dissipation machine cover is assembled to the machine shell; and a frequency converter is additionally arranged on the shell. The remanufactured permanent magnet synchronous motor manufactured by the method has better sealing performance and heat dissipation performance.

The invention relates to a gas injection device of a foaming injection molding machine, and belongs to the technical field of injection molding machines. The gas injection device comprises a gas source; a pressure reducing valve; an air inlet one-way valve; injecting air cylinders; a gas injection piston; the connecting rod mechanism is used for connecting the gas injection piston and the injection screw rod; the gas injection head is communicated with the gas storage chamber and the injection charging barrel; the gas injection one-way valve is located between the gas injection head and the gas injection cylinder, and gas in the gas storage chamber enters the injection charging barrel in a one-way mode through the gas injection one-way valve; and when the injection screw retreats in a pre-plasticized mode, the gas injection piston is driven by the connecting rod mechanism to slide in the gas injection cylinder, the volume of the gas storage chamber is compressed, after the gas pressure rises to exceed the melt pressure, the gas injection head is opened, and inert gas enters the injection charging barrel through the gas injection head. The gas injection system is simplified, the gas injection flow and pre-plasticizing of the injection screw are synchronously carried out, and the manufacturing cost of equipment is reduced.

The invention relates to the field of pipeline detection, in particular to a pipeline leakproofness detection device for constructional engineering construction detection, which comprises a base, a detection cylinder is mounted above the base, a first plugging piece is movably connected in the detection cylinder, and the first plugging piece seals the end part of a to-be-detected pipeline and clamps and fixes the pipeline. The pipeline is driven to move; a first plugging piece is installed at one end of the pipeline, a second plugging piece is installed at the other end of the pipeline, an air hole is formed in the second plugging piece, and air is injected into the pipeline after the two ends of the pipeline are plugged through the first plugging piece and the second plugging piece; the transmission assembly comprises a horizontally-arranged transmission rod, the transmission rod is driven by a motor, a second gear is arranged on the transmission rod in a sliding mode, through the structure of the detection marking assembly, when the pipeline passes through the lower portion of the detection marking assembly, the position of the leakproofness defect on the surface of the pipeline is detected and marked, and therefore follow-up repair of the pipeline is facilitated; and the whole pipeline is prevented from being discarded to cause waste.

The invention belongs to the technical field of atmospheric monitoring, particularly relates to an atmospheric environment particulate matter pollution monitoring device and a monitoring method, and aims to solve the problems that only gas at a fixed position and a fixed height can be monitored in the prior art, and impurities such as fluff and fine sand in the air are attached to an air collecting device to affect later atmospheric monitoring. According to the scheme, the device comprises a mounting column, a mounting frame is fixed to the outer wall of the mounting column, a monitoring box is fixedly mounted at the top of the mounting frame, and ray instruments are fixedly embedded in the inner wall of the top and the inner wall of the bottom of the monitoring box; according to the gas collection device disclosed by the invention, the collection ring can be driven to rotate and lift synchronously through rotation of the rotating shaft, so that gas collection can be carried out in different directions and at different heights, and the detection precision is improved; and gas injection and gas exhaust can be alternately carried out in the reciprocating movement process of the movable plate, and gas monitoring is continuously carried out.

The Bernoulli suction cup structure comprises a base and a controller, the surface of the base comprises a plurality of concentric annular layers obtained through division according to different radiuses away from the center of the base, and each layer is provided with a row of obliquely upward first air holes and / or a row of upward second air holes perpendicular to the base; the first gas hole is used for obliquely and upwards spraying gas and generating an acting force for downwards adsorbing the wafer by utilizing the Bernoulli principle, and the second gas hole is used for vertically and upwards spraying gas and providing an upward suspension acting force for the wafer; and the controller is used for adjusting the number and the distribution position of the air holes in the air injection state in the first air holes and the second air holes according to the size of the wafer and / or the shape of the wafer. Therefore, according to the size and / or shape of the wafer, the number and the distribution position of the air holes in the air injection state in the first air holes and the second air holes can be dynamically adjusted, and the stability and the accuracy of the wafer in the suspension state are ensured.

The invention discloses a horizontal five-axis turning and milling combined machining center, and relates to the technical field of combined machining machine tools. By arranging the composite milling mechanism, the height of the first milling assembly and the height of the second milling assembly can be independently adjusted, the purpose that the first milling assembly or the second milling assembly or the first milling assembly independently participates in the milling operation of the metal part is achieved, the turning mode, the milling mode or the turn-milling mode can be rapidly switched according to the machining requirement, and the machining efficiency is improved. A purging mechanism is arranged, linkage is formed through movement of a push rod, a push plate and a mounting base, and therefore when the clamping disc is turned over, a piston is pushed by a first piston rod and a second piston rod to extrude out air in the air storage cylinder; and the output high-speed air flow blows the surface of the clamping disc through the air blowing holes of the hollow arc-shaped baffle so as to remove residual metal fines, so that the double cleaning effects of overturning dumping and air flow blowing are achieved, the cleaning strength is greatly improved, and the automation degree is high.

The invention relates to the technical field of industrial waste gas treatment, in particular to a spray tower for industrial waste gas treatment, which comprises a bracket, a tower body mounted on the bracket, an annular gas pipe connected to the lower part of the outer wall of the tower body, gas injection pipes connected to the annular gas pipe at intervals along the circumferential direction and extending into the tower body, a gas inlet pipe connected to the annular gas pipe, and a connecting plate connected to the lower part in the tower body, a connecting plate is rotationally connected to the connecting plate through a rotating shaft, a blocking ring used for blocking the gas injection pipe is connected to the connecting plate, and a gas inlet is formed in the blocking ring. The transmission assembly can be driven by the motor to drive the rotating shaft to intermittently rotate, so that the air inlets in the blocking ring can be sequentially aligned with the four air injection pipes on the annular air pipe, the entering direction of waste gas is automatically switched, and the situation that the waste gas only concentrates at the center or one side of a filler area to flow is avoided; particulate matters in the waste gas are prevented from tending to be attached to the same position of the filler, the risk of local blockage is reduced, the effective area of an airflow channel is increased, and the waste gas treatment efficiency is improved.

An axial fuel stage (AFS) injector includes a mixing member including axially elongated mixing chambers in fluid communication with a combustion liner of a combustor, and fuel injectors in opposing side walls of the mixing chambers. A high-pressure (HP) air injection member defines a set of HP air jets spaced from the inlet of each mixing chamber. A fuel plenum in the mixing member delivers fuel from a fuel source to each set of fuel injectors. Each set of HP air jets directs a HP air from a HP air source and, in some embodiments, to draw a low-pressure (LP) air from a LP air source to direct the LP air with the HP air into the inlet of a respective mixing chamber where fuel is injected. The axially elongated mixing chambers direct the air-fuel mixture into the combustion liner for combustion in a secondary combustion zone thereof.

The invention discloses a plastic hollow plate shaping and cooling device and method, and belongs to the technical field of plastic hollow plate processing.The plastic hollow plate shaping and cooling device comprises a processing table, and a vacuum adsorption control system and an air floatation supporting control system are arranged at the two ends in the processing table respectively; two cooling mold mechanisms used for cooling the plastic hollow plate are arranged at the two ends of the top of the machining table, and a main cooling mechanism and an auxiliary cooling mechanism which are used for cooling are arranged on each of two molds of each cooling mold mechanism. Uniform negative pressure is formed through the vacuum grooves and the vacuum holes in the upper mold, a plate is forced to be attached to the cavity so as to guarantee the section shape, the lower mold forms air film support through the air injection grooves and the air injection micropores, the downward pulling force of vacuum adsorption and the gravity of the plate are counteracted, sliding friction between the plate and the lower mold is converted into gas lubrication friction, and the service life of the plate is prolonged. The problems that in a traditional shaping process, due to the fact that single-side adsorption force is too large, the top of a plate protrudes, and a hollow cavity collapses are solved.

The invention relates to the technical field of quenching equipment, and provides an online quenching system which comprises a lifting mechanism and a box body, the top of the box body is covered with a box cover, the lifting mechanism is used for lifting the box body, the box body is provided with a cooling mechanism, and the cooling mechanism comprises a water spraying mechanism and an air spraying mechanism. During working, a heated metal workpiece is placed in the box body, the cooling mechanism is started, and the cooling mechanism comprises the water spraying mechanism and the air spraying mechanism. The water spraying mechanism is driven by a water pump, water is conveyed to a conveying pipe network arranged in the box body and the box cover through a pipe network, and the workpieces are evenly sprayed with water to be cooled through a plurality of spray heads. The air injection mechanism supplies air to a lower air cavity installed in the box body and an upper air cavity installed in the box cover through a third fan and a fourth fan, air injection cooling is conducted on a workpiece through an air outlet head, the combination mode can flexibly adjust the proportion and speed of water injection and air injection according to actual requirements, and therefore accurate control over the cooling speed is achieved.

The invention discloses a surrounding rock fracture development horizon identification device and method.A vacuum pump of the identification device is arranged at the lower end of a test pipeline, the upper end of the test pipeline is closed, a valve is arranged on the test pipeline, the test pipeline is sleeved with a first air bag and a second air bag, and the first air bag is located above the second air bag; the air pump is arranged at the left end of the air injection main pipe, the right end of the air injection main pipe is connected with the bottom end of the first air injection branch pipe and the bottom end of the second air injection branch pipe through a three-way connector, and the upper end of the first air injection branch pipe is connected with an inflation inlet of the first air bag. The two upper ends of the second air injection branch pipe are connected with an inflation inlet of the second air bag, and a pressure sensor is arranged on the testing pipeline and located below the second air bag. According to the method, the surrounding rock fracture development layer position is judged, hole sealing is conducted in time, efficient gas extraction is achieved, and the resource utilization rate is increased on the premise that safety is guaranteed.

The invention provides upper fork burr treatment equipment which comprises a workbench, a top disc is arranged at the top of the workbench, and a plurality of positioning grooves distributed in an annular array are formed in the top disc; the two sides of the multiple positioning grooves are each provided with a pressing and positioning mechanism. The burr grinding and removing mechanism is located above one side of the top disc, and the burr grinding and removing mechanism is installed on the side of the workbench; the burr grinding mechanism comprises a grinding head, and the outer side of the grinding head is sleeved with a telescopic cylinder. The gas injection mechanism communicates with the top side of the telescopic cylinder through a conveying pipeline; and the rotation driving mechanism is arranged in the workbench, and the rotation driving mechanism is connected with the middle of the top disc. The rotary driving mechanism drives the top disc to rotate, the upper forks placed in the multiple positioning grooves are sequentially moved to the burr grinding and removing mechanism, batched upper fork burr treatment is achieved, the machining efficiency is improved, the air injection mechanism, the conveying pipeline and the telescopic cylinder are arranged, and automatic blowing and cleaning can be conducted on a grinding head of the burr grinding and removing mechanism.

The invention relates to the technical field of numerical control machining tools, in particular to a metal part numerical control machining tool which comprises a numerical control drilling machine, a processing seat is fixedly connected to the numerical control drilling machine, a discharging frame is fixedly connected to the interior of the processing seat, a moving seat is arranged in the processing seat, and a hole cleaning mechanism is rotationally connected to the moving seat. The transmission frame is fixedly connected to one side of the moving seat, the T-shaped frame is rotationally connected to the processing seat, the machining tables are fixedly connected to the two ends of the T-shaped frame, the metal plates are placed on the machining tables, and by arranging the hole cleaning mechanism, after a numerical control drilling machine is used for drilling holes, the air spraying pipes are inserted into inverted-T-shaped holes. When the air spraying pipe rotates, the hole wall scraping plate can be thrown out under the action of centrifugal force, so that the hole wall scraping plate is tightly attached to the inner wall of the inverted-T-shaped hole. And meanwhile, the air spraying pipe rotates to drive the fan blades to rotate, so that the air spraying pipe sprays air to blow out cuttings in the inverted-T-shaped hole, and time waste of subsequent cleaning operation is avoided.

A fuel nozzle for a turbine engine. The fuel nozzle has a premixer body, vortex generator, air injection orifice, and fuel injection orifice. The premixer body defines a primary flow path. The air injection orifice is provided in the premixer body and located downstream of the vortex generator. The fuel injection orifice is provided in the premixer body and opens into the primary flow path.

The invention relates to the technical field of detection systems, in particular to a quartz sand impurity rapid detection system, which comprises an image processing unit for regularly shooting images on a conveyor belt and recording the images as logistics images, and determining a target area corresponding to each logistics image based on a coincident part; the impurity identification unit is used for identifying the material contour in the target area, analyzing the impurity type corresponding to the material contour, marking the material contour corresponding to the impurity as a target contour and determining the position of the target contour; the air injection control unit is used for analyzing and determining the air injection opportunity of each air injection blowing nozzle based on the position coordinates when the target contour is identified and marked in combination with the conveying speed of the conveying belt; and when the air injection opportunity corresponding to the target contour is output, analyzing the shape characteristics of the target contour to obtain a projection area and a thickness measurement value, and adjusting the air flow parameters of the air injection blowing nozzle in combination with the corresponding related impurity types. According to the invention, different types of impurities can be effectively distinguished and targeted elimination can be carried out.

The invention relates to the technical field of absorptivity detection, in particular to a carbon dioxide absorbent absorptivity detection device which comprises a case provided with a transverse partition plate, a sealing cover hinged to the top of the case, a placing plate arranged on the transverse partition plate and used for placing a sample cabin, and weight sensors arranged on the placing plate and the sample cabin in a quality inspection mode. A connecting box penetrating through the placement plate is fixedly arranged on the placement plate, one end of the connecting box is inserted into the sample cabin, the other end of the connecting box is communicated with an air inlet mechanism located at the bottom of the case, a rotatable air injection mechanism is arranged in the end, inserted into the sample cabin, of the connecting box, and the air injection mechanism can rotate under the action of carbon dioxide provided by the air inlet mechanism; and spraying carbon dioxide on the carbon dioxide absorbent. According to the device, carbon dioxide can be automatically and uniformly sprayed on a carbon dioxide absorbent without using extra power, and meanwhile, the opening of the sample cabin is automatically sealed by using the air pressure sealing cover, so that the influence on the accuracy of detection data due to carbon dioxide leakage is prevented.

The present invention relates to the technical field of two-stroke engines, and discloses a multi-cylinder ignition type air-injection two-stroke direct injection multi-fuel design structure, which includes a fuel system, an intake system and a mixed rail air-injection system. The multi-cylinder ignition type air-injection two-stroke direct injection multi-fuel design structure has the following characteristics: intake boosting technology: using an air compressor to achieve intake boosting, thereby improving engine performance; air-assisted boosting technology: using an air compressor to achieve in-rail auxiliary boosting, thereby increasing the degree of mixing of fuel and air and improving engine performance; air-injection cylinder direct injection technology: the atomized particle diameter of the existing high-pressure common rail technology is about 10-15 microns. Through the air-injection technology, the mixed particles of fuel and air are more thoroughly atomized, and the diameter of diesel can be made to 5-8 microns, thereby realizing ignition type cylinder direct injection; and multi-fuel driving technology: it is easier to ignite low-ignition-point fuels, thereby achieving full combustion in different oil environments such as gasoline, kerosene, diesel, and alcohol gasoline.

The invention relates to the technical field of tire manufacturing, and discloses tire vulcanization equipment. Included angles are formed between first air holes in a center ring seat of the tire vulcanization equipment and the axial direction and the circumferential direction of the center ring seat respectively, guide vanes are located in air injection paths of the first air holes, and the air injection direction coincides with the normal direction of the guide vanes. The structure can accurately guide airflow, gas media are decomposed into axial speed and circumferential speed when flowing through the air holes, the axial speed and the circumferential speed synergistically act on the guide vanes, the guide vanes efficiently rotate, the rotating efficiency is improved, high-temperature gas can be evenly guided to all positions of the inner wall of the curing bladder, it is guaranteed that the interior of the curing bladder is evenly heated, and the service life of the curing bladder is prolonged. Therefore, the vulcanization quality is improved. In addition, the turbulent flow assembly is driven by airflow to rotate passively, uniform circulation of gas is achieved under the condition that an additional power source is not added, the structure of equipment is simplified, the manufacturing cost is reduced, and energy loss is reduced.

The utility model relates to the technical field of material stacking and separating equipment, in particular to a material stacking and separating mechanism which comprises a sliding table air cylinder, a connecting plate, a vacuum generator, a vacuum suction pipe and a vacuum suction cup assembly. The sliding table air cylinder is installed at the upper end of the connecting plate, the bottom of the connecting plate is connected with the air injection pipe, one end of the vacuum suction pipe is connected with the vacuum generator, and the other end of the vacuum suction pipe penetrates through the connecting plate and is connected with the vacuum suction cup assembly. The vacuum chuck assembly comprises a connector and a vacuum chuck, the connector is connected to the lower end of the vacuum suction pipe through a locking nut B, the vacuum chuck is fixedly connected to the tail end of the connector, and the vacuum chuck is used for adsorbing a product. According to the utility model, the efficiency and the success rate of stacking and separating a plurality of products are obviously improved, and compared with the traditional shaking or single magnetic separation method, the rapid and accurate separation can be more effectively realized.

The invention discloses a goaf carbon sequestration and fire preventing and extinguishing method, and belongs to the technical field of mine engineering and carbon sequestration. Comprising the following steps: stoping along the periphery of a working face, and mining the working face towards a main roadway. A mining area is constructed in a working face after mining is completed through a flexible formwork material, a CO2 storage space with the periphery closed and a goaf are constructed on the inner side, and an inflation pipeline and a grouting pipeline are reserved. Filling materials are injected into the goaf through the grouting pipeline, and CO2 is injected into the CO2 storage space through the inflation pipeline. And when the filling material accounts for 90% of the volume of the goaf, injection is stopped, and a monitoring valve is installed on the inflation pipeline. If it is monitored that the CO concentration rises and tends to be on fire, the monitoring valve is automatically opened, CO2 is released, the CO concentration is reduced, and meanwhile the filling material expands to make up the space. According to the method, various requirements of the goaf are comprehensively considered, and an effective solution is provided for sustainable treatment of the goaf.

The invention discloses a cooling system and a cooling method for preventing a steel belt from being supercooled, belongs to the technical field of metal processing, and aims to solve the problem of supercooling during aerial fog cooling. The cooling system for preventing the steel belt from being supercooled comprises a roller way (1), a high-temperature metal detector (2), an aerial fog cooling device (3), a water film thickness detector (4), an air injection device (5) and a control unit, the high-temperature metal detector (2), the aerial fog cooling device (3), the water film thickness detector (4) and the air injection device (5) are sequentially arranged in the conveying direction of the roller way (1). According to the cooling system and the cooling method for preventing the steel strip from being supercooled, the cooling capacity of aerial fog cooling can be flexibly adjusted, water sprayed by the aerial fog nozzles is prevented from being gathered on the surface of a steel plate to form a water film, the supercooling phenomenon on the surface of the steel strip is prevented, and diversified cooling requirements are met.

The utility model relates to a silver ingot transfer clamp. The silver ingot transfer clamp is characterized in that a connecting block is mounted on a manipulator forearm, and a clamp cylinder is mounted in the middle of the lower side of the connecting block; the movable plate is mounted on telescopic rods on two sides of the clamp cylinder, the clamping plate is mounted at the lower end of the movable plate, and the clamping plate is mounted at the inner bottom of the clamping plate; the air injection row groups are mounted on the outer sides of the clamping plates; air holes corresponding to the air nozzles of the air injection row groups are formed in the clamping plates; the adsorption device is installed at the front end of the connecting block and opposite to the clamp air cylinder. According to the scheme, the square clamp is arranged according to the shape of the silver ingot, the clamp air cylinder controls the clamping plate and the clamping plate to clamp and lift the silver ingot, and the stability of the silver ingot in the transferring process is effectively guaranteed in cooperation with the cushion block; and air injection row sets and air holes are formed in the two sides of the clamping plates, the cooled silver ingots are dried, and the silver ingot treatment efficiency is improved.

The invention provides a pump body assembly, a compressor and an air conditioner refrigeration system.The pump body assembly comprises an air cylinder and a plugging piece assembled on the first end face of the air cylinder, a valve groove is formed between the plugging piece and the air cylinder, an air supplementing opening communicated with the valve groove is formed in the plugging piece, and a backpressure channel and an air injection channel are formed in the air cylinder; an air supply opening and closing valve plate is arranged in the valve groove, the air supply opening and closing valve plate is provided with an air supply position enabling the air supply port to be communicated with the valve groove and a back pressure position enabling the air supply port to be disconnected from the valve groove, and the air injection channel comprises a first air injection channel and a second air injection channel; a first air supply inlet of the first air injection channel and a second air supply inlet of the second air injection channel are arranged in a mirroring mode relative to the geometric center of the air supply opening and closing valve plate. The eccentric wear phenomenon of the air supply opening and closing valve plate in the opening and closing process is reduced, the position switching of the valve plate is more stable and reliable, the impact noise is reduced, and the opening and closing reliability of the valve plate is improved.

The invention relates to the technical field of air detection, in particular to a convenient-to-adjust mobile urban road air detection device which comprises a mobile base, two telescopic cylinders are symmetrically and fixedly connected to the two sides of the interior of the mobile base, and two guide rods are symmetrically and fixedly connected to the two sides of the upper surface of the mobile base. The telescopic ends of the telescopic rods are slidably connected with the interiors of the guide rods, a detection box is slidably connected between the two guide rods, and sensing heads are symmetrically arranged on the two sides of the interior of the detection box. The telescopic cylinder and the connecting block drive the lantern ring to slide up and down along the guide rod, air at different heights can be conveniently detected, through the sliding effect of the lantern ring along the guide rod, the sleeve wheel is forced to drive the rotating teeth to rotate through the ratchets, and the two connecting frames are driven to get close to each other along the sensing head; the cleaning sleeve can conveniently clean the sensing head, the two air injection drying rings are forced to dry the surface of the sensing head by extruding the air bag, and the normal working effect of the sensing head is guaranteed.

The invention relates to the technical field of concrete mixers, in particular to concrete mixing equipment which comprises a mixing barrel, and a circulating mixing assembly is mounted in the mixing barrel; the circulating stirring assembly comprises stirring assemblies, stress lifting assemblies, an air injection box and a dust removal assembly, the two stirring assemblies are installed in the center of the stirring barrel and are opposite in stirring direction, a motor for driving the stirring assemblies to rotate is installed on one side of the stirring barrel, and the stress lifting assemblies are installed on the two sides of the inner wall of the stirring barrel; the air injection box is installed over the two stirring assemblies, a hole is formed in the bottom of the air injection box, one side of the air injection box is communicated with an air inlet pipeline, the dust removal assembly is installed at the top of the stirring barrel, the stress lifting assembly comprises a sliding plate, a baffle, an elastic plate, an inclined plate and a transverse plate, the sliding plate slides along the inner wall of the stirring barrel, and the baffle is installed at the top of the sliding plate. The technical problem that existing concrete stirring equipment is difficult to achieve the purpose of cyclic stirring of foam concrete by using an original structure in a stirring barrel is solved.

The invention provides a thickened oil adiabatic oxidation on-line test system meeting high-pressure air injection, comprising: a high-pressure injection module for obtaining a high-purity compressed air source; the adiabatic reaction module is provided with an adiabatic reaction kettle; the gas monitoring module is used for performing off-line quantitative detection and on-line qualitative detection on the gas to obtain all-component gas; the dynamic calibration module is used for constructing a calibration database and a real-time calibration algorithm and carrying out quantitative conversion on all-component gas to obtain real-time quantitative data; the intelligent prediction module is used for constructing a reaction kinetic model, automatically identifying a reaction stage and carrying out air injection rate self-adaptive control, gas sampling frequency adjustment and abnormal early warning; and the integrated control module is used for developing a human-computer interaction interface and realizing data interconnection. According to the method, the whole heavy oil oxidation process can be comprehensively simulated and monitored, the scientificity and the field applicability of theoretical research and data simulation are improved, and the information acquisition efficiency, the automatic monitoring degree, the safety and the accuracy of experiments are remarkably improved.

The invention relates to the technical field of fresh air equipment, and discloses a heat recovery reheating coil of a fresh air ventilator, which comprises a reheating mechanism, and a heat recovery mechanism is arranged on the right side of the reheating mechanism. When the heat recovery reheating coil pipe of the fresh air machine is used, the characteristics of efficient heat recovery and flexible air control are shown, fresh air enters a heat exchange core body of a second shell through a first impeller driven by a second motor, heat exchange is conducted between the fresh air and old air, primary heating is achieved, and then the fresh air enters a first shell through a fresh air conveying pipe; in summer, outdoor hot air encounters cold water, water drops can be condensed in the heating pipe, a first motor drives a lead screw to drive a sliding block and a water scraping block to scrape water stains, the heating pipe is prevented from rusting, in addition, an inflating pump inflates an air bag through an inflating pipe, the flow of a fresh air conveying pipe and the flow of an old air conveying pipe can be flexibly controlled, and therefore the fresh air conveying pipe and the old air conveying pipe can be controlled. Different requirements of users are met, dynamic adjustment of the fresh air flow and the exhaust air flow is achieved, and the energy efficiency of the system and the user experience are improved.

A stage for a turbomachine compressor including a row of stator vanes extending radially inwards from an outer shell to an inner shell housed in a cavity of the rotor, and an air recirculation passage in the cavity, with an air inlet downstream of the inner shell and an air injection outlet between a face guide and an opposite guiding face upstream of the cavity, having profiles inclined radially downstream, relative to a perpendicular to an axial direction. The air injection outlet has a distance greater than or equal to one fifth of a common length, and the air recirculation passage in the cavity is devoid of a device for sealing upstream of the air inlet.

An injector assembly for a gas turbine for introducing a gaseous fuel, liquid fuel and air into a combustion chamber, includes an injector shaft and an injector main body aligned along an injector longitudinal axis. The injector main body includes a first gas duct arranged centrally on the injector longitudinal axis, for introducing a gas flow into the combustion chamber; an air duct arranged radially around the outside of the first gas duct, and a liquid fuel injection arranged radially around the first gas duct for introducing the liquid fuel into the combustion chamber. The injector assembly introduces the gaseous fuel. The injector assembly is switchable between two configurations during operation: in a first configuration, air flows through the first gas duct, as an air injection; in a second configuration, the gaseous fuel flows through, as a gas fuel injection.