218results about How to "Guaranteed recycling" patented technology

The invention relates to the technical field of charging equipment management, and discloses a charging equipment intelligent management system and method, and the specific steps are as follows: constructing an intelligent management system comprising a charging station information unit, a charging equipment information unit and a user information unit, setting a charging equipment recommendation platform, and recommending a nearby charging station to a user. The method comprises the following steps: recording a search event of a user, collecting position information of a charging station, a use state of charging equipment and electric quantity data, dividing a monitoring area and monitoring search points to identify peak and low peak time periods, and executing a charging equipment supplement strategy and a charging station matching strategy to optimize distribution of the charging equipment and charging selection of the user. The method comprises the following steps: collecting search points of each monitoring area in a monitoring time period, executing a charging equipment supplement strategy, and in addition, executing a charging station matching strategy by a system according to personal information data collected in a peak time period.

The invention discloses a burr removing device for badminton racket processing, and relates to the technical field of burr removing devices, and the burr removing device comprises a composite mechanism. According to the burr removing device for badminton racket processing, through the design of a composite mechanism, a racket is placed on the fixing mechanism, the outer side of the racket is clamped through the fixing mechanism, so that the effect of fixing an object is achieved, burr removing operation is facilitated, a racket rod is placed in the stabilizing mechanism, and the stabilizing mechanism fixes the racket rod; the polishing mechanism is controlled to ascend and descend through the electric push rod so that the racket can be attached conveniently, the edge removing quality can be improved, the motor drives the center rotating shaft to rotate so as to drive the polishing mechanism to rotate, and therefore the effect of polishing the inner ring of the racket is achieved. And the metal chippings fall into the collecting box from the central groove, so that the effect of collecting the chippings is achieved, impurities are convenient to clean, and the deburring effect is prevented from being influenced.

The invention provides a cerium-zirconium loaded cobalt titanate solid solution nanosphere water treatment catalyst and a preparation method thereof, and relates to the field of water treatment. The cerium-zirconium loaded cobalt titanate solid solution nanosphere water treatment catalyst comprises nano spherical ferroferric oxide, a cerium-zirconium solid solution, cobalt titanate and D-(-)-quinic acid, the nano spherical ferroferric oxide serves as an inner core, the cerium-zirconium solid solution serves as an electron transport middle layer, the cobalt titanate serves as an active component outer layer, and the D-(-)-quinic acid serves as a morphology control agent. On the basis of the mass of the ferroferric oxide inner core, the mass percentage content of the electron transmission middle layer is 60%-80%, and the mass percentage content of the active component outer layer is 20%-40%; wherein the molar ratio of cerium oxide to zirconium oxide in the cerium-zirconium solid solution is 1: (0.33-3). The catalyst provided by the invention is environment-friendly, not only can efficiently catalyze and reduce p-nitrophenol, but also can be repeatedly used, is simple to regenerate, and has higher economic value and wide market application prospect.

The invention relates to the technical field of regenerative braking energy feedback, in particular to a braking energy feedback optimization control system based on power balance, which comprises a signal data acquisition module, a data analysis module and an adjustment optimization module, the data acquisition module is used for acquiring vehicle driving state data, battery charge state data and motor state data; the data analysis module is used for constructing a power distribution strategy according to the power balance control equation; and the adjusting and optimizing module is used for adjusting the regenerative braking torque in real time.

The invention discloses a composite hard and thick coal seam top coal weakening method, which comprises the following steps that S1, blasting drill hole groups are constructed on a composite hard and thick coal seam on an air return crossheading and an air inlet crossheading in the length direction of the crossheading at intervals of 5-10 m at the position not less than 30 m away from a mining line of a coal face, each group comprises 3-5 drill holes, the distance between hole opening points is 0.3-0.5 m, and the height of hole distribution positions in the vertical direction is 2-3 m; s2, drilling, charging and mud sealing are conducted, a radial air column non-coupling axial continuous forward charging mode is adopted as the charging mode, the charging linear density of each hole is 2.4 Kg / m, and the mud sealing length is not smaller than one third of the depth of a shot hole; s3, blasting is carried out; and S4, a water injection softening device is connected to the drill hole, water is supplied through a coal mine underground dustproof water pipeline, the water is filtered through a filtering water tank and then enters a liquid injection pump to be pressurized, and high-pressure multi-hole water injection and drill hole water injection softening fracturing are conducted on the blasted top coal weakening hole.

The utility model discloses a portable device for cyclic utilization of a cast-in-place pile reinforcement cage positioning frame, and belongs to the technical field of building auxiliary tools. According to the portable device for cyclic utilization of the cast-in-place pile reinforcement cage positioning frame, the reinforcement cage can be installed in an auxiliary mode, and installation and detachment are convenient. Sleeves are arranged at the three corners of a triangular support, a center ring is installed in the center of the triangular support, a through center ring threading hole is formed in the center ring corresponding to a sleeve wall threading hole, a through sleeve wall threading hole is formed in the sleeve wall, a screwed plug is installed at the rear end of an inner cavity of each sleeve, and a telescopic rod is inserted in the front end of the inner cavity of each sleeve. A spring is arranged in an inner cavity of the sleeve between the telescopic rod and the plug, and a multifunctional mounting seat is arranged at the front end of the telescopic rod. According to the utility model, the large-diameter and large-diameter reinforcement cage is prevented from bending deformation and falling apart, and meanwhile, the auxiliary erecting ribs can be recycled after the reinforcement cage enters a hole.

The invention relates to the technical field of aquaculture wastewater cyclic utilization, in particular to an aquaculture wastewater microalgae cyclic utilization system and a method thereof.The aquaculture wastewater microalgae cyclic utilization system comprises a raceway pond, a wastewater pretreatment mechanism and a power stirring mechanism, and a pipeline type photobioreactor is arranged on one side of the raceway pond; one side of the top end of the pipeline type photobioreactor is connected with a liquid storage tank, the bottom end of the liquid storage tank is connected with a second connecting pipe, the bottom end of the liquid storage tank is connected with a liquid discharging pipe, one end of the raceway pond is provided with a gas storage tank, one end of the gas storage tank is connected with a first connecting pipe, and the middle of the raceway pond is fixedly connected with a second partition plate. The system is high in applicability, high in stability and high in flexibility, the position is adjusted according to specific conditions, the microalgae culture cost of the system is low, the process is simple and convenient, the benefits of a user are improved, meanwhile, waste water generated by aquaculture can be recycled and turned into wealth, secondary pollution to the environment is avoided, and the environment can be protected.

The utility model relates to the technical field of PVC (polyvinyl chloride) plate processing, and provides a forming device for PVC plate processing, which comprises a base and a support rod. According to the PVC plate pressing device, the buffering structure is arranged, the first hydraulic push rod is started to drive the sliding plate to slide up and down on the outer wall of the supporting rod through the sliding groove, then when the sliding plate is driven to be adjusted to a proper position, the second hydraulic push rod is started to drive the pressing plate to enable the upper die base to enter the lower die base to press a PVC material, and then a PVC plate is pressed; when the pressing plate drives the upper die base to enter the lower die base for pressing, a movable rod drives a piston to slide in a damper to push and press a damping body through force generated by vibration, and vibration and impact force generated when the upper die base presses downwards are reduced through cooperation of viscosity and resistance of the damping body and a damping spring. And meanwhile, through cooperation of a guide groove, a telescopic rod and a buffer spring, the pressing plate slides on the outer side of the telescopic rod through the guide groove, then the buffer spring is compressed, and the buffer effect is further achieved.

The invention discloses a boiler regular drainage sewage heat energy recovery system, the system comprises a cold end system and a hot end system, the cold end system comprises: a pressurization device for pressurizing water flow in the system; the heat exchange equipment is connected to the pressurizing equipment and is used for recovering heat energy of the sewage water and carrying out heat exchange; the butt joint port is communicated with the heat exchange equipment and is used for transferring heat of fluid; the cold and hot end system comprises a boiler barrel sewage discharging system connected to the heat exchange equipment and used for providing a heat source; the water tank is connected to an outlet of the heat exchange equipment and used for storing the cooling water subjected to heat exchange; pressurizing the dewatering treatment equipment through a water pump; by comprehensively utilizing heat energy in sewage and optimizing water resource management, the energy utilization efficiency, the operation stability and the environmental protection property of the boiler are effectively improved, and the operation cost is reduced.

The utility model discloses an oil stain cleaning device for a stainless steel extrusion blank, which comprises a first material turning mechanism and a second material turning mechanism which are arranged at an interval, a cleaning cabin arranged between the first material turning mechanism and the second material turning mechanism, and a transverse moving mechanism arranged in the cleaning cabin in a penetrating manner, the cleaning bin comprises a first station, a second station, a third station and a fourth station which are sequentially arranged in the length direction of the transverse moving mechanism, the rotating carrier roller is connected to the transverse moving mechanism in a telescopic mode, the first material turning mechanism is connected with a feeding roller way, and the second material turning mechanism is connected with a discharging roller way. A transmission mechanism is arranged between the feeding roller way and the discharging roller way, and a control center is electrically connected into the cleaning bin. According to the device, multi-station and multifunctional full-automatic cleaning of stainless steel extrusion blanks is achieved, the labor intensity of workers is greatly reduced, and the device can adapt to blanks of different sizes and cope with different working conditions by adjusting the angle and height of each nozzle.

The invention discloses a method for separating and recycling cellulose-containing waste textiles, and belongs to the technical field of cellulose textiles. Comprising the following steps: opening the cellulose-containing waste textile, and mixing with a cellulose solvent to obtain a mixture of a cellulose solution and an undissolved textile; and carrying out solid-liquid separation, recovering the cellulose solution, and washing and drying the undissolved fabric to obtain the non-cellulose component fabric. According to the method for separating, recycling and reusing the cellulose waste textiles, the alkali concentration is controlled to be 4-10%, the temperature is controlled to be 0-20 DEG C, degradation and damage of the non-cellulose component textiles are avoided to the maximum extent, and recycling of the non-cellulose component textiles is guaranteed. Meanwhile, the cellulose solution obtained by the method can realize simple and low-cost reutilization and product remanufacturing, and regenerated cellulose fibers, cellulose films and cellulose plastics can be obtained in modes of wet spinning, wet film forming, casting molding and the like.

The utility model provides a polishing device for hardware fitting processing, which relates to the technical field of hardware fitting processing, and comprises a polishing work box, a first sliding groove, a second sliding groove, a first rotating shaft and a second rotating shaft, the moving platform is arranged in the first sliding groove in a penetrating mode, is in sliding connection with the grinding work box and is used for providing the moving platform for the hardware fittings; the bottom surface of the clamping assembly is fixedly connected with the top surface of the movable platform, and the clamping assembly is used for clamping hardware fittings; and the polishing assembly is located at the top of the clamping assembly and connected with the polishing work box. According to the hardware fitting polishing device, hardware fittings needing to be polished can be subjected to two-dimensional movement by moving the moving platform, so that the contact surface of the hardware fittings and the polishing assembly is greatly guaranteed, a user can conveniently and flexibly polish the hardware fittings, meanwhile, the polishing work of the hardware fittings can be carried out in the polishing work box, and the polishing efficiency is improved. And then waste materials obtained through grinding can be blocked and collected, so that the personnel safety in the grinding process is guaranteed, and the waste materials are recycled.

The invention provides a gob-side entry retaining method suitable for a mining roadway of a soft broken roof, and relates to the technical field of soil layer or rock drilling and mine safety. The method specifically comprises the following steps: determining the area range of the soft broken roof, constructing an anchor net cable or a shed frame in a roadway to reinforce and support the area of the soft broken roof, constructing an anchor cable on one side of solid coal to exert horizontal constraint on surrounding rock after top cutting and roadway retaining, and arranging two paths of unit brackets to be connected with an anchor cable beam during stoping; wherein a directional kerf blasting pre-splitting mode is adopted for roof cutting, and large-diameter drilling pre-splitting blasting roof breaking is constructed in an overlying shear roof while blasting roof cutting is conducted on a lower rock stratum; after mining, retaining and protecting measures are taken beside the roadway in the dynamic pressure roadway, a retained roadway withdrawing scheme is determined in a stable area, a non-withdrawing area, a withdrawing area and an observation area are divided, cyclic utilization of supporting materials is guaranteed through ordered withdrawing of temporary supports, the cost can be saved, the carrying distance can be saved, and the production efficiency can be improved.

The utility model discloses safety type plastic rod processing equipment which comprises a shell, a lead screw rod penetrates through the interior of the shell through a bearing, the side wall of the lead screw rod is sleeved with a lead screw sleeve, the side wall of the lead screw sleeve is fixedly sleeved with a movable block, and a transverse rod penetrates through one side of the movable block in a sliding mode. The two ends of the transverse rod are fixedly connected with the two sides of the interior of the shell correspondingly, an electric telescopic rod is installed on the lower portion of the moving block, a concave frame is installed at one end of the electric telescopic rod, a grinding roller penetrates through the interior of the concave frame through a bearing, a driving motor is installed on one side of the concave frame, and the output end of the driving motor is connected with the grinding roller. And a positive and negative rotation motor and a control panel are mounted on one side of the shell. The safety type plastic rod processing equipment has the beneficial effects that the supporting rollers are adopted, so that the installation work of plastic rods can be stably completed in a labor-saving manner, and the use practicability of the safety type plastic rod processing equipment is improved.

The invention relates to a flexible needle puncture mechanism based on rubber soft spring support, the flexible needle puncture mechanism comprises a base, a feeding mechanism, a needle rotating mechanism, a traction mechanism and a flexible needle, the mechanism has the functions of autorotation, feeding and retreating of the flexible needle, and it is guaranteed that the flexible needle is not bent or subjected to torsional deformation in the puncture process; the rotation of the flexible needle is realized by directly driving the flexible needle through a needle rotating motor, and the feeding and the retreating of the flexible needle are realized by driving a lead screw nut platform through a feeding motor so as to drive the feeding of the flexible needle on a feeding platform; a supporting mechanism is arranged in the needle rotating mechanism, the supporting mechanism supports the flexible needle through a hollow rubber sleeve and a soft spring, and one end of the rubber sleeve achieves traction and recovery of the rubber sleeve through a traction mechanism.

The invention belongs to the technical field of medical materials, and particularly relates to high-strength dual-network self-healing hydrogel as well as a composition, a preparation method and application thereof. The composition for preparing the high-strength dual-network self-healing hydrogel comprises a composition A for constructing a first network system of the hydrogel and a composition B for constructing a second network system of the hydrogel, wherein the composition A comprises modified chitosan and modified hyaluronic acid, and the composition B comprises polyvinyl alcohol and sodium tetraborate; the volume ratio of the polyvinyl alcohol to the modified chitosan to the modified hyaluronic acid is (5-7): (5-7): 1; the concentration of the modified chitosan is 2-4 wt%, the concentration of the modified hyaluronic acid is 8-12 wt%, and the concentration of the polyvinyl alcohol is 18-22 wt%. The high-strength dual-network self-healing hydrogel prepared on the basis of the composition has relatively high mechanical performance and excellent self-healing performance, and also has excellent resilience performance, swelling performance, shape memory and ionic conduction behavior.

This utility model provides a fly ash pulping system, including a pulp inlet, a vibrating screen, a vibrator, a fine crusher, a transmission module, and a mixing module. The fly ash pulping system provided by this utility model uses a vibrating screen to screen out large and small particles, and crushes the large particles before mixing them with the small particles. This ensures material recycling while guaranteeing thorough mixing and improving pulping efficiency.

The furniture material drying device based on telescopic linkage heat control comprises a device base and a drying box shell, a conveying belt is arranged above the device base, a transmission shaft is arranged in the conveying belt, the drying box shell is located above the device base, and an electric heating pipe is arranged on the top face in the drying box shell; a plurality of drying openings are formed in the lower portion of the left side in the drying box shell, dehumidification openings are formed in the right sides of the drying openings, dehumidification pipes are connected to the upper ends of the dehumidification openings, circulating pipes are connected to the left side and the right side of each dehumidification pipe in a penetrating mode, and threaded rods are horizontally installed in the circulating pipes to form a left-right reciprocating motion structure. A piston is connected to the left end of the threaded rod, and a filter screen is arranged on the left side of the piston and installed in the circulating pipe. According to the drying device for the furniture material based on telescopic linkage heat control, heat energy recycling is achieved when the furniture material is dehumidified, meanwhile, heat is conveniently controlled, and the drying efficiency of the furniture material is improved.

The utility model relates to winter construction new pouring concrete heat preservation matching facilities belongs to concrete construction technical field, including tarpaulin, the inside setting of tarpaulin has new pouring concrete body. The utility model has the beneficial effect that through the setting of heat transfer zone, can continuously supply heat, can last heat preservation, guarantees the concrete quality of winter construction, and heat transfer zone presents the structure of multiple rows, supplies heat as much as possible for more new pouring concrete body, and the non - woven fabric has better moisture - proof, ventilation, pliable, nontoxic, the characteristics such as affordable price, and the above structure can disposable investment, recycling, material - saving environmental protection, so that the structure has energy - saving environmental protection, and heat transfer zone, non - woven fabric procurement unit price is low, simple operation, wide application, so that the structure has economy, and the setting of tarpaulin can resist gale and heavy rain weather, as much as possible reduces the influence of external factors to new pouring concrete, is applicable to all winter construction concrete heat preservation maintenance.

The invention belongs to the technical field of uranium extraction from seawater, and particularly relates to a membrane assembly for uranium extraction from seawater in engineering application and a preparation method thereof. The invention provides a preparation method of a seawater uranium extraction membrane module for engineering application. The seawater uranium extraction membrane module comprises a horizontal elm board, a vertical elm board, four lower membrane boxes, a supporting rod and a PC board with label information printed through UV. According to the engineering application seawater uranium extraction membrane module prepared by the invention, the membrane filaments are uniformly distributed, can be vertically soaked in seawater and are in full contact with seawater, the membrane module marking information cannot be eroded by seawater, the label information can be seen from different directions, a large number of membrane modules can be put in the sea, and the damaged and fractured membrane filaments also remain on the supporting rods; and it is fully guaranteed that each membrane filament put in the sea can be recycled.

The utility model relates to the technical field of copper rod production, in particular to a novel wax liquid filtering device which comprises a filtering cylinder, a cylinder cover arranged above the filtering cylinder and a base support arranged below the filtering cylinder. The adjusting device comprises a threaded rod in threaded connection with the filter plate, a limiting block arranged at the bottom end of the threaded rod, a sliding rod arranged at the upper end of the threaded rod, a spline rod arranged at the upper end of the sliding rod and a motor arranged on the cylinder cover and connected with the top and bottom of the spline rod; a cleaning rod is arranged at the upper end of the spline rod, a spring connected with the spline rod in a sleeving mode is arranged between the cleaning rod and the cylinder cover, two layers of filter screen media are arranged and are the dot non-woven fabric and the polyester fiber cloth, so that wax liquid can be better filtered, automatic filtering of backflow wax liquid is achieved through the liquid inlet pipe and the liquid outlet pipe, impurities in the wax liquid are reduced, and the service life of the wax liquid is prolonged. The wax liquid can be recycled; and the adjusting device is arranged to adjust the position of the filter plate so as to clean impurities.

The invention provides an integrated sludge water treatment integrated device which comprises an integrated shell, and a pretreatment tank, a flocculation tank, a sludge treatment device and a clear water recovery device are sequentially distributed in the integrated shell from left to right; spiral sludge discharge structures are arranged at the bottoms of the pretreatment tank and the flocculation tank, the bottoms of the spiral sludge discharge structures are movably connected with the bottom of the inner wall of the integrated shell, the tops of the spiral sludge discharge structures penetrate into the pretreatment tank and the flocculation tank respectively, and the top of the pretreatment tank is detachably connected with a filter grating; a lifting structure is arranged on the surface of the spiral sludge discharging structure, and the bottom of the lifting structure is movably connected with the bottom of the inner wall of the integrated shell. By arranging the integrated shell, the pretreatment tank, the flocculation tank, the sludge treatment device, the clear water recovery device, the spiral sludge discharge structure, the filter grating, the lifting structure, the sludge storage box and the sludge conveying pipe, the problem that sludge is inconvenient to discharge from the existing pretreatment tank and flocculation tank is solved.

The invention belongs to the field of flow batteries, and discloses a system and a method for recovering the capacity of a halogen-containing flow battery, the system comprises a rebalance galvanic pile, the positive liquid of the rebalance galvanic pile circularly circulates with a rebalance storage tank through a positive pump, and the negative liquid of the rebalance galvanic pile circularly circulates with an electrolyte storage tank through a negative pump; the rebalancing electric pile is connected with a rebalancing power supply, and the rebalancing power supply, the positive electrode pump and the negative electrode pump are all in signal connection with the system controller. Charging is started on the basis of the ion average valence state, charging is stopped on the basis of the charging capacity, the current intensity and the charging time of the rebalance power supply are limited on the basis of the decomposition rate of the downstream hypohalous acid, cyclic utilization of halogen is guaranteed, and meanwhile the system controller is additionally arranged to control starting and stopping of the power supply and the charging intensity. And automatic online recovery of the capacity of the energy storage system of the halogen-containing flow battery is realized.

The present invention provides an automated production system for an elevator control cabinet, including an operation line and a return board line; the operation line is arranged on the upper side of the return board line; the operation line includes an assembly line, a detection line and a packaging line; a first automatic lift is arranged at the left end of the assembly line, and the first automatic lift connects the assembly line with the return board line; on both sides of the assembly line are assembly manual stations and material turnover vehicle parking stations; the transmission line in the detection line is sequentially provided with a first transfer machine, multiple detection transfer machines, a second transfer machine, sorting and manual detection stations; on both sides of the transmission line are provided with a rework platform and a detection platform; the packaging line is sequentially provided with a second automatic lift, a box sealing station, a strapping station, and an automatic lifting and lowering line station; and a fully automatic finished product hoisting machine is arranged at the second automatic lift, and the second automatic lift connects the operation line with the return board line. The present invention arranges the operation line and the return board line into upper and lower layers in space, thereby ensuring the recycling of tooling boards.

The present invention relates to the technical field of aquaculture, and in particular to an aquaculture device, comprising a tank body, a support frame, a universal wheel, a fishing unit and a sewage discharge unit; the fishing unit provided by the present invention rotates right during the upward movement of the baffle net and finally becomes flush with the lower side wall of the fish outlet, so that the fish on the upper end of the baffle net are discharged after passing through the fish outlet and the guide cylinder, thereby completing the fish catching operation, and the catching efficiency is high, and two adjacent pull ropes at the upper end of the baffle net can form a guide groove, so that the fish can slide down from the baffle net and pass through the fish outlet more smoothly without being scratched, thereby ensuring the survival rate of the fish caught from the tank body, and the inclined baffle net can buffer the discharged fish, so that the fish pass through the fish outlet one after another, thereby not causing the fish outlet to be blocked, and in addition, the water in the tank body will not be discharged during the process of catching fish, so that the water in the tank body can continue to be used.

The utility model relates to the technical field of cockroach sticking and catching, and discloses a cockroach sticking and catching box which comprises a box body, a replacing mechanism is arranged in the box body, a blocking mechanism is arranged on the outer side of the box body, the replacing mechanism comprises a connecting base, the connecting base is fixedly connected to the inner wall of the box body, an inserting block is inserted into the inner wall of the connecting base, and a storage box is fixedly connected to one side of the inserting block. The top end of the connecting shaft is fixedly connected with a sealing cover, the outer side of the box body is fixedly connected with a supporting plate, the top of the sealing cover is provided with a limiting plate, the outer side of the storage box is fixedly connected with a connecting block, and the bottom of the connecting block is fixedly connected with a placing plate. According to the cockroach sticky catching box, through the arranged replacement mechanism, cockroach luring materials in the material storage box can be conveniently added, a sticky catching plate on the top of the placing plate can be conveniently replaced, meanwhile, reset installation of the material storage box and the placing plate can be achieved, and therefore it can be guaranteed that the device can be recycled, the use cost is further reduced, and resource waste is reduced; the practicability of the device is enhanced.

The utility model discloses green plant planting equipment capable of recycling water, which belongs to the technical field of green plant planting, comprises a box body, and is characterized in that a carrier plate is arranged in the box body, a leakage groove is arranged in the carrier plate in a penetrating manner, a water tank is fixedly arranged below the carrier plate, and a micro water pump is fixedly arranged at the rear part of the box body; a switch is arranged on one side of the miniature water pump, a guide pipe is fixedly arranged on the front portion of the miniature water pump, a water absorption ball is fixedly arranged at the end, away from the miniature water pump, of the guide pipe and located in the water tank, a vertical pipe is fixedly arranged on the upper portion of the miniature water pump, and a horizontal pipe is arranged above the box body. One end, far away from the micro water pump, of the vertical pipe is fixedly connected with the horizontal pipe, and an atomizing spray head is fixedly arranged at the lower part of the horizontal pipe, so that the situation that water flows out or overflows and wets surrounding articles due to excessive watering is effectively avoided, and meanwhile, the recycling of redundant water is effectively ensured.

The application relates to a multi-connected air conditioner control method and device, electronic equipment and a readable storage medium. The method comprises the following steps: when the air conditioner running mode is a heating mode, determining a shutdown indoor unit with a shutdown running state in the indoor unit, and controlling the shutdown indoor unit to be disconnected with a refrigerant pipeline; determining a terminal indoor unit in the shutdown indoor unit; and performing a refrigerant recovery operation on the pipeline corresponding to the terminal indoor unit. By disconnecting the shutdown indoor unit with the refrigerant pipeline, the refrigerant can be prevented from entering the indoor unit to cause heat loss; meanwhile, by recovering the refrigerant in the terminal indoor unit, the refrigerant can be prevented from accumulating in the refrigerant pipeline, and the refrigerant recovery in the terminal indoor unit can drive the refrigerant in the refrigerant pipeline of the non-terminal indoor unit to circulate to a certain extent, so that the refrigerant recovery is ensured, and excessive heat loss of the system caused by the refrigerant recovery of too many indoor units is avoided.

The invention discloses a stem cell-based microvesicle as well as a preparation method and application thereof, belongs to the technical field of biological tissue engineering, and particularly relates to a preparation method of the stem cell-based microvesicle, which comprises the following steps: culturing stem cells until the cell fusion degree is 80-90%, performing hypoxia treatment, and cleaning for 2-3 times; standing and culturing the cleaned stem cells, then adding a calcium ion carrier, and carrying out ultrasonic treatment; the serum-free basic culture medium containing the calcium ion carrier is immediately absorbed and removed, the cells are cleaned through PBS, culture is conducted for 24 h, and cell supernatant is collected and merged respectively; performing first centrifugation to remove cell debris; performing second centrifugation to remove dead cells and large cell debris; carrying out third centrifugation to remove organelles; fourth centrifugation is carried out, large vesicles are removed, and a final supernatant is obtained; and filtering and centrifuging to obtain a microvesicle precipitate. The preparation method of the microvesicles aims at systematically improving the yield and biological activity of the stem cell microvesicles through low-oxygen pre-stimulation, ultrasonic-calcium ion carrier synergistic induction and differential centrifugation.

The invention provides a medicine feeding device with an anti-choking function for a critical care appliance. The medicine feeding device structurally comprises a pushing block, a pushing body, a sealing ring, a heat preservation cylinder, an output body and a nasal feeding tube, the pushing block and the pushing body are perpendicular to each other, and the pushing body penetrates through the sealing ring and enters the heat preservation cylinder; after the output body is improved, the locking body at the lower end of the covering disc and the upper end of the heat preservation cylinder form the effect of being convenient to disassemble and clean, and then the silica gel ring at the upper end of the covering disc and a trapezoid formed by the conveying pipe are combined, so that one end of a nasal feeding tube can be opened by utilizing the characteristic that the upper part is narrow and the lower part is wide after being inserted into the end of the nasal feeding tube; and then the stress disappears and rebounds, the conveying pipe can be clamped, so that stable medicine feeding is achieved, inconvenience caused by finger pinching and permeation caused by gap influence in the prior art are replaced, the using effect of the medicine feeding device can be improved, meanwhile, the nasal feeding pipe can be removed according to the actual situation, the conveying pipe directly enters the interior of the mouth, and the medicine feeding device is convenient to use. And slowly feeding the medicine.