758 results about "Mixed flow" patented technology

The invention discloses flexible intelligent manufacturing equipment, which comprises a rack, a plurality of working modules, a detachable fixing mechanism, a module position detection unit and a control unit, and is characterized in that the module position detection unit is used for detecting the positions of the working modules on a mounting surface; the control unit is used for generating a position adjusting signal according to module data collected by the module position detection unit, and all the module fixed interface groups and the standardized fixed interface groups have the same matching size and connection form so as to realize interchange of working modules of the same type or different types. The problems that a traditional equipment module is tedious to replace and insufficient in positioning precision are effectively solved, the downtime can be remarkably shortened, the problems of material conveying clamping stagnation, mechanical interference, machining precision reduction and the like caused by module position deviation are solved, and the high-flexibility requirement of multi-variety mixed flow production can be further met.

The invention provides a concentric circle circulating flow sewage treatment system based on electric strengthening and a control method. The system comprises a concentric circle circulating flow reactor, a microbial electric strengthening unit and an AI driving control unit, a concentric circle double-ring gallery and multi-point water inlet and multi-point backflow achieve a complete mixed flow type flow state of transverse plug flow and longitudinal circulation flow, the concentric circle circulation flow state is coupled with the microbial electric strengthening unit to form gas-liquid-solid-electricity four-phase turbulent flow to break a mass transfer boundary layer, and the contact efficiency and the mass transfer efficiency of sewage and microorganisms are strengthened. The anodes and the cathodes of concentric circle structures are closely arranged to generate electric field gradient to regulate and control spatial distribution of microbial communities, dynamic polarity switching is achieved through an AI system, the reactor is endowed with the self-adaptive capacity for coping with water quality fluctuation, and the sewage carbon, nitrogen and phosphorus removal treatment efficiency is improved in a breakthrough mode.

The invention discloses a quantitative recognition device for the number and size of bubbles at a rotating impeller of a multiphase pump. The quantitative recognition device comprises a two-phase flow experiment system, the multiphase pump, a high-speed camera, a light source and the like. The preprocessing and data analysis system and the deep learning system are arranged in the computer; the two-phase flow experiment system and the image acquisition system are electrically connected with the computer through lines. The invention further discloses a quantitative recognition method for the number and size of the bubbles at the rotating impeller of the multiphase pump. According to the method, the problems of low blistering recognition precision, low efficiency and large error caused by the existing manual measurement method are solved, and a reference method is provided for exploring the influence of gas distribution at the impeller in the multiphase pump on pump operation and optimizing design of the multiphase pump.

The utility model provides a reaction tank for heat transfer fluid production. The reaction tank comprises a reaction kettle main body, an omnidirectional flow mixing assembly and a convection ring seat, a linear actuator is arranged on the top surface of the reaction kettle main body and drives the omni-directional flow mixing assembly to do lifting motion in the reaction kettle main body. The omni-directional flow mixing assembly comprises a circulating guide cylinder, a driving machine cylinder and a centrifugal impeller, the flow speed of liquid in the circulating guide cylinder is increased through high-speed rotation of the centrifugal impeller, and high-speed conveying and flow mixing stirring of the liquid are achieved. The convection ring seat is positioned at the bottom end of the omnidirectional flow mixing assembly, and liquid convection spraying is performed through a plurality of spraying holes, so that the liquid is fully mixed in the reaction kettle main body, and the stirring uniformity of the liquid is ensured. The liquid mixing device can realize liquid layered mixing in the vertical direction, avoids local uneven mixing, improves the mixing efficiency of heat conduction liquid, and is suitable for efficient stirring of various complex liquids.

The invention relates to the technical field of nitrogen and oxygen mixed flow, and discloses a large-flow high-precision nitrogen and oxygen mixed flow system. The system comprises a gas attribute feature library construction module for periodically collecting historical component data to generate a feature library containing flow and concentration reference values; the real-time gas component monitoring module is used for acquiring the real-time component concentration and flow value of the current nitrogen and oxygen; the mixed flow deviation analysis module is used for generating a component deviation matrix according to the reference value and the real-time value; the dynamic parameter optimization module retrieves the matched flow fluctuation data set, and when the dispersion exceeds a threshold value, the proportion of the total duration from the historical start to the current moment is calculated to serve as the gas compensation proportion; and the mixed flow execution control module is used for adjusting input proportioning parameters of nitrogen and oxygen from a historical starting moment based on the compensation proportion. According to the system, all the modules work cooperatively, and high-precision mixing of nitrogen and oxygen under large flow is achieved.

A pump assembly includes a housing having a first end, a second end, and an axis extending through, the housing accommodating fluid flow therethrough. A pump assembly includes a pump coupled to the first end of the housing, the pump including an inlet in fluid communication with the housing, a motor configured to drive an output shaft, and a mixed-flow impeller coupled to the output shaft and disposed adjacent to the inlet, the mixed-flow impeller having an inlet diameter and an outlet diameter that is greater than the inlet diameter, the mixed-flow impeller configured to output fluid at an acute angle relative to the axis. A pump assembly includes a handle coupled to the second end of the housing and including an outlet in fluid communication with the housing, the handle also including a battery receptacle electrically coupled to the motor and configured to receive a battery pack.

The invention discloses an integrated tower-shaped hydrogen production gas-liquid treatment device and method, the integrated tower-shaped hydrogen production gas-liquid treatment device comprises a wave stabilizing section, an electrolyte cooling section, a gas-liquid separation section, a gas washing section, a gas cooling section and a fog drop separation section which are sequentially communicated from bottom to top, the wave stabilizing section is internally provided with a wave stabilizing device, and the bottom of the wave stabilizing section is provided with an electrolyte outlet; a first tubular heat exchanger is arranged in the electrolyte cooling section, a first cooling medium inlet and a first cooling medium outlet are formed in the side face of the electrolyte cooling section, a dispersing disc and a gas rising device are arranged in the gas-liquid separation section, a tangential gas-liquid mixed flow inlet is formed in the side face of the gas-liquid separation section, trapping filler is arranged in the fog drop separation section, and a gas exhaust port is formed in the top of the fog drop separation section. The tangential gas-liquid mixed flow inlet is formed in the side face of the gas-liquid separation section, a gas-liquid mixture enters the gas-liquid separation section in the tangential direction, gas and electrolyte are separated by means of different centrifugal forces borne by gas and liquid phases, alkali mist and undissolved particles carried in the gas are reduced, and the separation efficiency is improved.

The invention relates to the technical field of air purification, and discloses a space air particle differentiation system and a control method thereof.The space air particle differentiation system comprises an air particle separation module and a control module, the air particle separation module comprises an air inlet, a cyclone separation barrel and a detachable dust collection barrel, the cyclone separation barrel separates particles in air through centrifugal force classification, and the separated particles fall into the bottom dust collection barrel; the ultraviolet catalysis module comprises an ultraviolet reaction chamber, the inner wall of the ultraviolet reaction chamber is coated with a photocatalyst, and a UV-C light source is configured and used for decomposing organic pollutants and microorganisms; the electron-ozone reaction module comprises a mixed flow pipeline fan and an exhaust port, the mixed flow pipeline fan forms negative pressure airflow in the system, and purified air is exhausted through the exhaust port. Through cooperation of cyclone separation, ultraviolet catalysis and electron-ozone reaction, large particles are removed through cyclone separation, organic matter is decomposed through ultraviolet catalysis, microorganisms and superfine particles are oxidized and decomposed in a reaction chamber through electron flow and ozone, the maintenance period is prolonged, and efficient consumable-free purification is achieved.

The invention provides a portable bladeless fan which is characterized in that a first air inlet part is arranged on the rear side, a first air outlet part is arranged on the front side, and the first air inlet part and the first air outlet part are communicated in a shell; the pressurizing piece is connected with the front side of the shell, the pressurizing piece is provided with a negative pressure channel, and the negative pressure channel guides air on the radial outer side of the shell to the radial inner side of the shell; the mixed flow fan is located in the shell and connected to the rear side of the pressurizing piece, and the mixed flow fan rotates around a rotating shaft to generate airflow; a pressurizing flow guide channel is formed between the mixed flow fan and the shell and between the pressurizing piece and the shell, air enters the pressurizing flow guide channel from the first air inlet part, pressurized mixed flow is formed in the pressurizing flow guide channel and then is exhausted from the first air outlet part, and meanwhile air on the radial outer side of the shell is driven to flow through the negative pressure channel and is guided out from the radial inner side of the shell. On the basis that it is ensured that the first air outlet part exhausts air with enough air volume and air pressure, the air volume and the air supply distance are further increased through air guiding of the negative pressure channel.

The invention provides a mixed flow velocity and flow measuring device and method, and particularly relates to the technical field of measuring instruments, and the device comprises a gas mixing assembly, a flow field optimization assembly, a flow velocity sensing assembly and a signal processing assembly. The gas mixing assembly comprises a differential channel mixer and a mixing cavity, and gas premixing is achieved. The flow field optimization assembly comprises a plurality of air duct partition plates and straight pipe sections, and the mixed gas conveying pipeline is divided into a plurality of independent divided air ducts; the flow velocity sensing assembly comprises a rectification assembly and a pressure sensing assembly, the rectification assembly comprises a pore plate and / or a grid, and the pressure sensing assembly comprises a plurality of uniformly distributed pressure sensing elements; the signal processing assembly comprises a differential pressure sensing transmitter, a static pressure sensing transmitter, a temperature sensing transmitter, an atmospheric pressure sensing transmitter and a data processing module. The pressure sensing element detects differential pressure signals, the differential pressure sensing transmitter converts the signals, the data processing module calculates the average flow velocity and flow of the mixed gas based on the signals and measurement data, and the measurement precision and accuracy are improved.

The invention relates to the technical field of rain and sewage diversion, in particular to a rain and sewage diversion optimization method based on combination of terrain gravity and a pipe network, in the rain and sewage diversion optimization method, slope calculation, flow gradient analysis and section resistance matching are combined, a rain and sewage mixed flow trend and a pipeline full flow section are accurately recognized, drainage capacity distribution is optimized, and the rain and sewage diversion efficiency is improved. According to the method, a slope imbalance section and a discharge capacity difference area can be recognized in advance through transmission capacity calculation and flow velocity gradient analysis, data support is provided for load distribution optimization, a Markov switching system is combined with flow direction transfer rate calculation and pressure fluctuation analysis, the system adjusts the flow direction based on dynamic changes of different discharge modes, and the flow direction transfer rate calculation and pressure fluctuation analysis are combined. The influence of burst flow impact is reduced, a dynamic flow direction adjusting strategy is constructed through a hidden Markov model, self-adaptive matching is formed between flow direction change analysis and a diversion transfer strategy, the accuracy of rainwater and sewage diversion is improved, regulation and control error calculation is combined with flow direction equilibrium adjustment, and setting of switching points and overflow adjusting parameters is more flexible.

The invention discloses a mixed-flow type runner welding device for a water turbine, and belongs to the technical field of welding devices. The welding machine comprises a main body welding machine and a locking mechanism, the locking mechanism used for disconnection protection is arranged in one side of the surface of the main body welding machine, and the welding machine has the advantages that a failed mechanical arm can be automatically limited, so that the possibility that the mechanical arm rotates and droops at will due to rotation failure is avoided; automatic locking of the ratchet wheel structure can fix the joint position at the moment of rigidity loss, it is ensured that welding is kept on an original welding track, welding size deviation caused by the fact that the mechanical arm is out of control and droops is avoided, meanwhile, quick response of locking of the first ratchet wheel and the second ratchet wheel which are arranged forwards and backwards can lock the joint when the drooping tendency just occurs, and welding quality is improved. The automatic welding device has the advantages that further displacement of the mechanical arm is prevented, hard contact between a welding gun and a workpiece is avoided, workpiece scrapping and equipment maintenance cost is reduced, and therefore the safety of the automatic welding device during working is greatly improved while welding stability is guaranteed.

The invention provides a mixed-flow pump with a built-in automatic cleaning mechanism, and relates to the technical field of water pumps, the mixed-flow pump comprises a bottom plate, a mounting seat is fixedly mounted on the surface of the bottom plate, and a motor is fixedly mounted on the surface of the mounting seat. A connecting rod is connected with a fixing disc and a connecting plate, so that the pump shaft drives the fixing disc to rotate when rotating, a rotating ring rotates, a scraper A is rotationally connected with the interior of a protective shell, the scraper A is always tightly attached to the inner wall of the pump shell through the pre-tightening force of a torsional spring, sediment is continuously scraped in the running process of the pump, and the cleaning efficiency is improved; when large solid particles or hard sediments appear in the protective shell, the scraper A can be bent backwards to give way when bearing too large resistance, strong impact is avoided, the stable scraping function is kept, the self-cleaning capacity of the interior of the pump shell is improved, the pump shell can cope with the sediments under different working conditions, and the maintenance requirement is reduced.

The present invention relates to the technical field of heat exchange equipment, and specifically discloses a composite mixed flow air cooler with a peak device, comprising: a shell, an induced draft fan, a medium transfer pipe, a water supply pipe, a regulating valve 1, a water supply tee, a regulating valve 2, a cooling filler, an evaporating coil, an evaporating coil regulating air inlet window, a cooling filler regulating air inlet window, an air cooler regulating air inlet window, a medium inlet, a circulating water tank, an air cooler, a mist bed, an air mixing chamber, a cooling filler water distribution device, an evaporating coil water distribution device, a medium outlet, and a water collector. The present invention has multiple operating modes, such as a peak operating mode, a summer operating mode, a spring and autumn combined operating mode, a water-off operating mode, and an antifreeze mode, which can meet different usage scenarios. In addition, the invention has unique mixed flow drip cooling and condensation technology and condensation recovery and reheating technology, achieving multiple functions of water saving, energy saving, and white mist elimination.

The invention discloses a mixed-flow pump with a self-adaptive blade setting angle in a transient process. The mixed-flow pump comprises a blade adjusting structure and a self-adaptive control unit, the blade adjusting structure is arranged in an impeller hub and comprises a telescopic device, one end of the telescopic device is arranged outside a pump shaft in a sleeving mode, and a driving gear is fixedly connected outside the end of the telescopic device. The other end is connected with the servo motor; a driven gear is arranged at the position of the meshing point and fixedly connected with one end of a blade fixing shaft, the blade fixing shaft is embedded in the impeller hub, and the other end of the blade fixing shaft is connected with blades. The blade fixing shaft is provided with a blade fixing shaft rotation braking device; the self-adaptive control unit comprises a computer control system and a pump operation data acquisition device, the pump operation data acquisition device is in signal connection with the computer control system, and the computer control system outputs a blade adjusting instruction to the blade adjusting structure to adjust the blade placement angle. The device can realize the self-adaptive adjustment of the blade setting angle in the transient process, and adapts to different liquid flow angle changes, so that the efficiency of the mixed-flow pump is improved, and the pressure pulsation, vibration and the like in the transient process of starting and stopping of the pump and the operation under the bias working condition are reduced.

The utility model belongs to the technical field of reactors, and particularly relates to a multiphase unpowered reactor, which comprises a vertical shell, an upper reaction area and a lower liquid collection area are arranged in the shell, and the reaction area is communicated with the liquid collection area through a cap hood, and is characterized in that an annular pipe is arranged in the middle of the reaction area and is connected with a feed port of the shell through a feed pipe; a plurality of horizontal circulating hydraulic sprayers are arranged on the annular pipe, and the axis of at least one horizontal circulating hydraulic sprayer is tangential to the outer side of the annular pipe; a cross pipe is arranged at the lower part of the reaction area; a plurality of vertical circulating hydraulic sprayers are arranged on the cross pipe; and the horizontal circulating hydraulic spray head and the vertical circulating hydraulic spray head are venturi mixed flow spray heads. The utility model has the beneficial effects that the middle section and the lower section of the reaction area of the shell adopt two sections of liquid-phase hydraulic sprayers to be combined with the atomizing sprayers at the top of the reaction area to respectively form liquid flow in the vertical direction and the horizontal direction, so that the mixing effect of gas-phase, liquid-phase and solid-phase substances is enhanced, and the conversion efficiency is improved.

The application discloses a kind of purification devices for diphenylamine production, it is related to chemical purification technical field, including purification tank body, stirring mixing assembly and lifting mixed flow component are equipped in the purification tank body, stirring mixing assembly and lifting mixed flow component are jointly connected comprehensive drive component;The lifting mixed flow component includes multiple dispersion pipes arranged in the purification tank body, multiple dispersion pipes are evenly distributed in the circumferential of purification tank body, lifting column is slidably connected in each dispersion pipe, the top end of lifting column is fixedly connected with traction rope, the diphenylamine solution in the purification tank body can be mixed as a whole by being equipped with stirring mixing assembly, the diphenylamine solution can be fine flow mixing by being equipped with lifting mixed flow component using pressure-driven mode, stirring mixing assembly and lifting mixed flow component are jointly used to effectively ensure that the diphenylamine solution in the purification tank body is efficiently mixed, so that diphenylamine is more efficiently purified, and the use effect is good.

The utility model discloses a low-noise mixed flow fan in the technical field of fans, which comprises a shell, the shell is provided with an air inlet and an air outlet, the shell is cylindrical, a motor is arranged in the shell, an output rotating shaft of the motor faces the air inlet and coincides with the axis of the shell, and the output rotating shaft of the motor is provided with a backward-tilting centrifugal impeller. A partition plate is arranged in the machine shell and divides the inner space of the machine shell into a first cavity and a second cavity, the motor is arranged in the second cavity, an output rotating shaft of the motor penetrates out of the partition plate to enter the first cavity, the backward-tilting centrifugal impeller is arranged in the first cavity, and the size of the backward-tilting centrifugal impeller is matched with the size of the first cavity. An air guide groove parallel to the axis of the machine shell is formed in the side, away from the second cavity, of the partition plate, the end, close to the partition plate, of the air guide groove communicates with the first cavity, and the peripheral side of the air guide groove is isolated from the second cavity. The mixed flow fan structure is designed by combining the shapes of the centrifugal fan impeller and the axial flow fan, the shell structure is effectively utilized, and both the air volume and the air pressure performance are considered.

The invention discloses a multi-target optimization scheduling method and system for multi-stage mixed flow automobile production and a medium. The method comprises the following steps: obtaining automobile production order data and automobile production line data; distributing the automobile production order data to the automobile production line data on the basis of an improved NSGA-II algorithm in combination with a heuristic sorting strategy and a guide rule strategy, and generating an initial ranking sequence population; and performing iterative crossover mutation operation on the initial scheduling sequence population based on an improved NSGA-II algorithm according to a multi-target fitness evaluation result, performing automobile production scheduling optimization on each generation of crossover mutation result based on a production constraint repair mechanism, and generating a final automobile production scheduling sequence until an iteration termination condition is met. Therefore, the method can adapt to the actual production constraint of an enterprise so as to meet the requirements of order on-time delivery, resource utilization rate maximization and remodeling cost minimization.

The invention discloses a wastewater treatment system based on municipal engineering, and relates to the technical field of wastewater treatment. The suction part close to the bottom of the tank body reaction tank is arranged below the flow mixing box, the suction runner is used for lifting a wastewater mixture at the bottom of the tank body reaction tank into the flow mixing box, the backflow part is used for conveying the aerated wastewater mixture into the tank body reaction tank, and the backflow runner is slidably arranged in the corresponding suction runner in a sleeving manner. The jet flow assembly is communicated with the backflow flow channels on the two sides of the jet flow assembly, and the jet flow assembly is used for jetting the wastewater mixture in the backflow flow channels into the tank body reaction tank in a jet flow mode. According to the invention, by controlling the lifting motion of the support ring and the conducting pipe among different jet flow point positions, sludge mixed wastewater at the bottom of the pool can be pumped out and conveyed and dispersed into the wastewater at the different jet flow point positions, so that oxygen-mixed activated sludge can be fully diffused in the wastewater to improve the pollutant degradation effect.

The invention provides a portable bladeless fan which comprises a shell, a first air inlet part is arranged on the rear side of the shell, a first air outlet part is arranged on the front side of the shell, and the first air inlet part and the first air outlet part are communicated in the shell; the pressurizing piece is connected with the front side of the shell, the pressurizing piece comprises an end face arranged forwards, the axial upper end face is located behind the first air outlet part, and a first matching structure is arranged on the end face; the mixed flow fan is located in the shell and connected to the rear side of the pressurizing piece, and the mixed flow fan rotates around a rotating shaft to generate airflow; the fixing piece is used for fixing the portable bladeless fan to an external object and comprises a second matching structure, and the second matching structure is matched with the first matching structure so that the fixing piece can be detachably fixed to the end face; a pressurization flow guide channel is formed between the mixed flow fan and the shell and between the pressurization piece and the shell, and air enters the pressurization flow guide channel from the first air inlet part, forms pressurization mixed flow in the pressurization flow guide channel and then is exhausted from the first air outlet part.

The utility model relates to the technical field of steam power generation turbines, in particular to a mixed flow type saturated steam power generation turbine which comprises a cylinder, the cylinder comprises a vertical inlet cavity and a horizontal outlet cavity which are communicated, and reinforcing ribs are arranged at the positions, corresponding to the joint of the two cavities, of the inner wall of the cylinder. A protruding structure at the bottom of the side, away from the horizontal outlet cavity, of the outer wall of the air cylinder is fixedly connected with a gearbox. The stationary blade assembly comprises a first-stage radial flow stationary blade fixedly arranged on the inner wall of the vertical inlet cavity and a second-stage axial flow stationary blade fixedly arranged on the reinforcing ribs; the rotor assembly comprises a rotating part connected with the high-speed shaft of the gear box, a first-stage radial flow vane impeller and a second-stage axial flow vane impeller, wherein the periphery of the rotating part is sleeved with the first-stage radial flow vane impeller and the second-stage axial flow vane impeller. The radial flow turbine and the axial flow turbine are combined to form the mixed-flow turbine, so that the working capacity of a single cylinder is improved, the power generation efficiency is improved, the cost is saved, and the unit size is reduced.

Crushing and feeding equipment and deep-sea mining and transport system [Solution] The crushing and feeding device of the present invention includes a main body and a hydraulic motor, the main body having at least one roller inside, the roller fitted onto a corresponding roller shaft, the roller shaft rotatably connected to the main body, at least three identical disc blades spaced equally apart in the axial direction of the roller, each disc blade having at least one cutting edge, plugs provided on both the front and rear vertical surfaces of the main body, the plugs fitting into the gap from the roller to the vertical surface of the main body, and the power output shaft of the hydraulic motor connected to the roller shaft. The deep-sea mining and conveying system of the present invention includes a relay station, a mixed-flow pump, a lifting pipe, and a mother ship, the relay station including a supply barrel, a supply pipe, and the crushing and feeding device connected in order from top to bottom, the lower opening of the supply pipe connected to the lifting pipe.

The application provides a rotary impingement oblique flow centrifugal combined compressor and application thereof, and belongs to the technical field of turbine engines, and comprises an outer casing structure, an inner casing structure, a working mechanism and a diffuser mechanism, the outer casing structure and the inner casing structure are rotary bodies, the inner casing structure is located inside the outer casing structure, the inner casing structure and the outer casing structure form a working cavity, the working mechanism is installed in the working cavity and is used for pressurizing airflow. Compared with the compression mode of a conventional combined compressor, the application draws lessons from the pressurization mode of a supersonic inlet, and the Mach number of airflow relative to a rotating impeller reaches 2 or more through high-speed rotation; at this time, a series of weak oblique shock waves are constructed through the contraction of a passage, and a high-efficiency compression system is obtained through the pressurization of the shock wave system, the single-stage pressure ratio of the high-efficiency compression system is much higher than that of a conventional compressor, and the application has the advantages of compact structure, simple processing and long service life.

The invention discloses a ship pipe fitting workshop scheduling method, system, equipment and medium based on a large model assisted evolutionary algorithm, and relates to the technical field of ship pipe fitting workshop production operation, and the specific steps are as follows: establishing a hybrid flow workshop scheduling model, adopting a multi-dimensional coding and decoding structure to code a workshop scheduling scheme, generating an initial population, and establishing a hybrid flow workshop scheduling model; and guiding the individuals to carry out iterative evolution by using a search operator sequence generated by the large model based on a historical evolution effect or a randomly generated search operator sequence, and outputting an optimal scheduling scheme with the shortest completion time. According to the method, modeling and solving of a multi-resource collaborative complex scheduling problem are realized, and the problem of insufficient scheduling scheme quality caused by neglect of transportation processing coupling or low algorithm search efficiency in an existing method is solved. By introducing a large-model intelligent guiding mechanism, the evolutionary process has adaptive optimization ability, and the feasibility of a scheduling scheme is ensured through a complete coding and decoding framework.

The invention relates to a support-adjustable chassis lifting appliance and a chassis lifting appliance switching station, and belongs to the technical field of automobile production line conveying systems. The front supporting mechanism comprises a positioning seat fixed on the hanging bracket and a positioning pin rotating seat clamped and matched with the positioning seat, and an elastic resetting piece used for resetting and clamping the positioning pin rotating seat to the positioning seat is arranged in the positioning seat; the rear supporting mechanism comprises a guide shaft arranged on the hanging bracket and a supporting seat which is in sliding and rotating connection with the guide shaft, a positioning structure is arranged between the supporting seat and the hanging bracket, and the supporting seat rotates around the guide shaft to be combined with or separated from the positioning structure. Through switching of multiple positions of the positioning pin and the supporting seat, the requirements of vehicle body sizes of different vehicle models and the requirement of space avoidance in the new energy vehicle model combination process can be met, multi-platform and multi-vehicle model mixed flow production is met, and the mixed flow adaptation capacity of the lifting appliance is effectively improved.

The present application relates to the field of gas-liquid mixing, and provides a bubble generator and an ozone aerator, wherein the bubble generator comprises an inlet connecting end, an outlet connecting end and a throttler assembly, the inlet of the throttler assembly is detachably connected with the inlet connecting end, the outlet of the throttler assembly is detachably connected with the outlet connecting end, the throttler assembly comprises at least two groups of throttling holes and mixing chambers, and the throttling holes and the mixing chambers are alternately arranged in the direction from the inlet connecting end to the outlet connecting end; the inner diameter of the throttling hole continuously decreases. The present application solves the low aeration efficiency in the prior art, the gas-liquid mixed flow enters the throttler assembly with multiple groups of throttling holes and mixing chambers through the inlet connecting end, the inner diameter of the multiple groups of throttling holes decreases in sequence to carry out multiple times of pressurization, gas dissolution and pressure reduction, and smaller bubbles such as nanoscale bubbles are obtained, the diameter of the generated bubbles is adjusted by arranging different groups of throttling holes and mixing chambers, and the adding efficiency of ozone and other gases is improved, and energy consumption is reduced.

The present invention discloses a mixed flow pump impeller structure and a mixed flow pump, which relate to the technical field of mixed flow pumps and include an impeller body, the impeller body including a spherical shell, an intermediate rod, a vertical pump shell, and a plurality of blades; the spherical surface of the spherical shell is provided with two aligned spline grooves, and the center line connecting the two spline grooves passes through the center of the spherical shell; the middle position of the intermediate rod is provided with an annular groove, and the annular groove is located inside the spherical shell, and the upper and lower sides of the annular groove are provided with a second spline shaft integral with the intermediate rod. The two ends of the impeller blades of the present invention respectively form two angles with the entire central axis, and the two angles are unequal. When operating in a low flow mode, the blades are placed at a large angle with the central axis at the inlet of the entire impeller. When operating in a high flow mode, a replacement mechanism at the center of the impeller replaces the upper and lower ends of the blades, so that the blades form a small angle with the central axis at the inlet of the entire impeller.

The invention provides a liquid spraying type mixing and heating device, and relates to the technical field of heat exchange equipment, the liquid spraying type mixing and heating device comprises a shell, a first liquid inlet pipe and a second liquid inlet pipe, the shell is provided with a first-stage mixing flow channel and a second-stage mixing flow channel which are arranged in the first direction and communicate with each other, and the first-stage mixing flow channel and the second-stage mixing flow channel extend in the first direction; the first-stage mixing flow channel is of a Venturi structure, a liquid outlet is formed in the end, away from the first-stage mixing flow channel, of the second-stage mixing flow channel, and the cross sectional area of the second-stage mixing flow channel is gradually increased in the direction from the first-stage mixing flow channel to the liquid outlet; the first liquid inlet pipe and the second liquid inlet pipe are both communicated with the first-stage mixing flow channel, the first liquid inlet pipe is used for introducing a liquid medium to be heated into the first-stage mixing flow channel, and the second liquid inlet pipe is used for introducing a high-temperature liquid medium into the first-stage mixing flow channel. The high-temperature liquid medium is adopted to heat the to-be-heated liquid medium, the influence of the bubble blasting phenomenon on the heating device can be effectively avoided, and the service life is ensured.

The application belongs to the technical field of heat supply equipment, and provides a regional heat supply mixing tank based on turbulence structure optimization, which comprises a first turbulence component and a second turbulence component arranged in a tank body along a water flow direction; the first turbulence component is located behind a low-temperature water inlet and behind a high-temperature water inlet, and is used for blocking the channel of cold water sticking to the bottom and actively inducing to the middle or upper part of the tank body; the second turbulence component is located in front of a medium-temperature water outlet, and is used for forcibly turning and cutting the mixed fluid about to flow out, so as to realize the thermal deviation homogenization of the mixed fluid. The mixing tank is used for hydraulic decoupling and heat mixing of a primary circuit and a secondary circuit of a heat network, and the internal turbulence structure is additionally arranged and optimized to eliminate the thermal stratification phenomenon in the tank, and then the temperature uniformity of the water outlet is improved.