77results about How to "Control the cost of use" patented technology

The invention discloses a steam sterilizer, which comprises an evaporating pan assembly having a disinfection chamber, wherein a heating element is arranged at bottom of the disinfection chamber, an exhaust pipe is arranged on the upper part of the disinfection chamber, an exhaust control valve is arranged on the exhaust pipe; a pressure water case, wherein, the bottom of the pressure water case is connected to the bottom of the disinfection chamber through a feed pipe, a water volume control valve is arranged on the feed pipe; a bidirectional air pump connected to the pressure water case through a pressure regulating pipeline and communicated to the disinfection chamber through a hot air pipeline, wherein a pressure regulating valve is arranged on the pressure regulating pipeline, a hot air control valve is arranged on the hot air pipeline; a circuit board assembly connected to the bidirectional air pump, the heating element, the exhaust control valve, the water volume control valve, the pressure regulating control valve and the hot air control valve; and a casing arranged at external part of the above parts for supporting and protecting the above parts. The steam sterilizer has functions of cleaning, disinfection and drying which are carried out in the disinfection chamber, artificial transfer of the disinfection articles is not required, usage is more convenient and faster, disinfection processing efficiency is increased, and secondary pollution probability during a transfer process of the disinfection articles can be reduced. An ingenious design is employed, so that structure is simpler, more compact, smaller and more flexible, comprehensive utilization rate of the parts is high, and manufacture cost and use cost can be better controlled.

The invention provides a cell separation system and a method thereof, the system comprises a centrifugal device, wherein a centrifugal frame is arranged in the centrifugal device, the centrifugal frame is connected with a centrifugal motor, the centrifugal frame is driven to rotate, a holder for placing a centrifuge tube is provided at the centrifugal frame to centrifuge the liquid in the centrifuge tube; and the centrifugal device is provided with a corner positioning device; at least one liquid adding device is provided, the liquid adding device is provided with a pump for injecting a presetliquid into the centrifuge tube; least one precise dosing device is provided, the precise dosing device is provided with a screw push device, a peristaltic pump or a diaphragm pump to achieve precisefilling of the liquid into the centrifuge tube; at least one suction device is provided, the suction device is provided with a suction pipe which can be lifted and lowered, the suction pipe is connected with a vacuum device or a suction pump, the suction device extends the suction pipe into the centrifuge tube to a predetermined depth, and the liquid in the centrifuge tube is pumped away. The system is capable of automating the process of cell separation, thereby achieving automated cell separation operation at a low cost, and ensuring separation quality.

The invention provides a variable air inlet grille of an automobile radiator, and belongs to the technical field of automobiles. The variable air inlet grille of the automobile radiator solves the technical problem that an existing automobile air inlet grille cannot be adjusted between the fully-opened state and the fully-closed state. The variable air inlet grille of the automobile radiator comprises a grille frame fixedly arranged at the front end of an automobile. A support is fixedly arranged in the grille frame, a plurality of grille pieces are evenly arranged on the support, and the middle of each grille piece is connected to the support in a rotary mode. The variable air inlet grille further comprises a plurality of connecting rods, each grille piece is hinged to the corresponding connecting rod, the grille pieces are parallel to one another, and when all the grille pieces are rotated onto the same plane, a frame opening of the grille frame can be covered. An adjusting structure which can be used for adjusting the angles between the grille pieces and the connecting rods is arranged on the support. The variable air inlet grille of the automobile radiator has the advantages of being simple in structure, capable of being adjusted between the fully-opened state and the fully-closed state and the like.

The invention belongs to the field of welding materials, and particularly relates to a precipitation strengthening type nickel-cobalt-based high-temperature alloy welding wire for welding a high-temperature part of an 800-DEG C ultra-supercritical power station. The welding wire is mainly characterized in that Ti / Al is more than or equal to 1.5 and less than or equal to 2, and C / Nb is more than orequal to 0.03. The yield strength of the welding wire at 800 DEG C is not less than 600 MPa. An alloy comprises, by mass percent, 25-30% of Co, 20-23% of Cr, 1.4-1.8% of Al, 2.1-3.6% of Ti, 1.5-2.0%of Nb, 0.5-1.0% of Mo, less than or equal to 0.1% of Si, less than or equal to 0.3% of Mn, less than or equal to 0.01% of Cu, less than or equal to 0.04% of C, less than or equal to 0.003% of B, and the balance of Ni, and no rare earth element is contained. A deposited metal matrix of the welding wire is an austenite (gamma) phase of a disordered face-centered structure, precipitation strengthening phases are a Ni3 (Al, Ti) gamma'phase and a primary carbide NbC, and carbide phases are distributed between crystals. The welding wire fills up the blank in the prior art, has excellent high-temperature performance, can be widely applied to homogeneous and heterogeneous welding of high-temperature alloy parts under the condition of ultra-supercritical water vapor at the temperature of 750-800 DEG C, and can also replace an existing nickel-based / nickel-cobalt-based high-temperature alloy welding wire.

The invention discloses an airship multi-rotor composite aircraft and belongs to the technical field of aircraft design. A composite aircraft in combination with the airship and a multi-rotor aircraftspecifically comprises a fuselage, aircraft arms, a motor, a propeller, a fuselage cover door, a rear auxiliary rod, a front auxiliary rod, an airbag, a breather pipe, an air pump and a helium gas bottle. When the composite aircraft flies at high speed, the airbag is folded and contracted inside the fuselage; after the composite aircraft enters a hovering state, the airbag is released from the inside of the fuselage and is gradually inflated and expanded to generate buoyancy, so that the composite aircraft hovers in the air, the motor of the composite aircraft stops running at this time, thereby prolonging the flight duration of the composite aircraft. With the airship multi-rotor composite aircraft provided by the invention, the problems that the flight speed of the airship is slow and the flight duration of the multi-rotor aircraft is short are solved, and meanwhile the helium gas used in the composite aircraft can be recycled so that the use cost of the composite aircraft can be effectively controlled.

The invention discloses automatic injection equipment for lithium battery electrolyte, and the equipment comprises a base; an electrolyte injection mechanism is arranged above the base, a rotating disc is arranged below the electrolyte injection mechanism, and placing grooves are formed in the upper surface of the rotating disc; the placing grooves are sequentially divided into a first-stage groove set, a second-stage groove set, a third-stage groove set and a fourth-stage groove set from the center of the rotary disc to the outside. According to the automatic injection equipment for the lithium battery electrolyte, through a turnover type lithium battery electrolyte injection mode, a traditional assembly line type processing mode is abandoned, and the occupied area is small; the use cost of equipment and land resources can be effectively controlled while effective and automatic injection of the lithium battery electrolyte is guaranteed, and through the arranged supporting mechanism, the rotating disc can be driven to automatically advance by one position after the rotating disc rotates by one circle; therefore, the placement grooves on the turntable are automatically and sequentially switched from the fourth-stage groove group to the third-stage groove group, the second-stage groove group and the first-stage groove group, so that electrolyte injection of all lithium batteries on the whole turntable is automatically completed.

The invention discloses a method for applying a biomass extract product to coal blending for coking as an additive. The method comprises the following steps: (1) extracting biomass with an organic solvent, and obtaining a high molecular weight biomass extract and a low molecular weight biomass extract; and (2) applying the biomass extract to coal blending for coking, namely mixing and coking at least one of the high molecular weight biomass extract and the low molecular weight biomass extract with mixed coal at the mass percent of 0.5%-3%. By mixing and coking at least one of the high molecular weight biomass extract and the low molecular weight biomass extract with the mixed coal, the coke reactivity PRI of coke particles can be lowered on the basis of common mixed coal, and the strength of the prepared coke is greatly improved, so that the use ratio of weakly caking coal or non-caking coal in the mixed coal is increased under the premise of ensuring good strength and low coke reactivity of the prepared coke; and the coking cost is reduced.

The invention discloses a steam sterilizer, which comprises an evaporating pan assembly having a disinfection chamber, wherein a heating element is arranged at bottom of the disinfection chamber, an exhaust pipe is arranged on the upper part of the disinfection chamber, an exhaust control valve is arranged on the exhaust pipe; a pressure water case, wherein, the bottom of the pressure water case is connected to the bottom of the disinfection chamber through a feed pipe, a water volume control valve is arranged on the feed pipe; a bidirectional air pump connected to the pressure water case through a pressure regulating pipeline and communicated to the disinfection chamber through a hot air pipeline, wherein a pressure regulating valve is arranged on the pressure regulating pipeline, a hot air control valve is arranged on the hot air pipeline; a circuit board assembly connected to the bidirectional air pump, the heating element, the exhaust control valve, the water volume control valve, the pressure regulating control valve and the hot air control valve; and a casing arranged at external part of the above parts for supporting and protecting the above parts. The steam sterilizer has functions of cleaning, disinfection and drying which are carried out in the disinfection chamber, artificial transfer of the disinfection articles is not required, usage is more convenient and faster, disinfection processing efficiency is increased, and secondary pollution probability during a transfer process of the disinfection articles can be reduced. An ingenious design is employed, so that structure is simpler, more compact, smaller and more flexible, comprehensive utilization rate of the parts is high, and manufacture cost and use cost can be better controlled.

The invention provides a method for removing a support positioning structure of an irradiation monitoring pipe, comprising the following steps: (a) incising all the bolts on the support positioning structure of the irradiation monitoring pipe; (b) incising all the position pins on the support positioning structure of the irradiation monitoring pipe; (c) incising all the welding lines between the support brackets of the rest layers of the support positioning structure of the irritation monitoring pipe except the intermediate layer thereof and the hanging basket wall; (d) lifting the support positioning structure of the irritation monitoring pipe and incising the welding lines between the support bracket of the intermediate layer of the support positioning structure of the irritation monitoring pipe and the hanging basket wall to lead the support positioning structure of the irritation monitoring pipe to be disassembled into a plurality of support brackets; and (e) incising the obtainedmultiple support brackets by three sections, and placing into a lead shielding container after incising. The method in the invention can lead the incision trace of the hanging basket wall to be neat and smooth, thus facilitating mounting a new support positioning structure of the irritation monitoring pipe.

The invention discloses a smart factory supplier management and control method, which comprises the following steps that: before a vehicle leaves, a supplier makes a vehicle entry appointment, so thata factory can conveniently register and manage the supplier and vehicle information; when the vehicle departs, the departure time and the position information of the vehicle on the way are reported in real time; when the vehicle arrives at the park, the supplier puts forward a park entering application and acquires parking space information; when the vehicle runs to the obtained parking space, unloading is started, the unloading starting time and the unloading ending time are reported, and the unloading rate generated according to the reported information is received. Meanwhile, the inventionfurther discloses a management and control system for the intelligent factory suppliers, the method is achieved through the management and control system, the purchasing period of the parts of the suppliers is managed and controlled, the vehicles and order information of all the suppliers are subjected to garden entry management in a unified mode, vehicle congestion is reduced, the service processing efficiency of the suppliers is improved, and the cost is saved.

The invention relates to an air cylinder type double-folding-side mechanism for a battery shell, and belongs to the technical field of side folding of the battery shell. The air cylinder type double-folding-side mechanism comprises a working table, and a mounting column is fixed to the working table; the left side and the right side of the mounting column are each provided with a bottom die, and a side folding reset mechanism for side folding is arranged over each corresponding bottom die; each side folding reset mechanism comprises a mounting support fixed to the mounting column, a side folding cutter and a transmission rod doing vertical motion; an ejector rod for enabling each transmission rod to move downwards is vertically arranged over each transmission rod, and two ejector rods are fixed to a top plate; the top plate is in vertical sliding fit connection with the mounting column; an air cylinder is vertically arranged at the position, corresponding to the top plate, of the mounting column, and a cylinder body of the air cylinder is fixed to the mounting column; and a piston rod of the air cylinder is connected with the top plate. The mechanism is convenient to operate, and the use cost and the maintenance cost are effectively controlled while the production efficiency is ensured.

The invention relates to a limiting and edge folding mechanism for a battery shell, and belongs to the technical field of edge folding of the battery shells. The limiting and edge folding mechanism for the battery shell comprises a worktable on which a bottom die is mounted, wherein a mounting column on which a sleeve is mounted is fixed to the worktable section at the right side of the bottom die; a rotating shaft is horizontally mounted through the sleeve, and a handle plate is mounted at the right end of the rotating shaft; an edge folding returning mechanism for folding an edge is arranged right above the bottom die, and the edge folding returning mechanism comprises a mounting bracket, an edge folding cutter, and a transmission rod which can move up and down; the edge folding cutter is mounted at the lower end of a transmission rod through a cutter seat, and a returning plate is fixed at the upper end of the transmission rod; springs are mounted between the returning plate sections at the left side and the right side of the transmission rod and the mounting bracket; a worm and gear mechanism for power transmission is arranged between the transmission rod and the rotating shaft; a limiting block is fixed to the bottom die section at the right side of the edge folding cutter through a bolt. The limiting and edge folding mechanism for the battery shell is convenient to operate; the use cost and the repair cost can be effectively controlled while the production efficiency is ensured.

The invention relates to a cam-type flanging mechanism for a battery case and belongs to the technical field of battery case flanging. The cam-type flanging mechanism for the battery case comprises a working table, and a bottom die is arranged on the working table. An installing column is fixed on the working table and located at the right side of the bottom die. A sleeve is installed on the installing column. A rotating shaft horizontally passes through the sleeve. A hand shank disk is arranged at the right end of the rotating shaft. A flanging reset mechanism for flanging is arranged above the corresponding bottom die and comprises an installing bracket, a flanging knife and a drive rod moving up and down. The flanging knife is installed at the lower end of the drive rod via a tool apron. A reset plate is fixed on the upper end of the drive rod. Springs are installed between the installing bracket and the reset plate at the right side and the left side of the drive rod. A cam mechanism for power transmission is arranged between the drive rod and the rotating shaft. The cam-type flanging mechanism for the battery case of the invention is convenient for operating, and effectively controls usage cost and maintenance cost while ensuring production efficiency.

The invention relates to a full-automatic dosing system for electroplating sewage treatment equipment. The full-automatic dosing system comprises a first dosing system for roughly adjusting a dose, a second dosing system for finely adjusting the dose, and a dosing control system for controlling the dose and dosing speed of the first and second dosing systems; the first dosing system and the second dosing system are respectively communicated with a wastewater pipeline for conveying wastewater; and the wastewater pipeline communicated with the second dosing system is positioned at downstream of the wastewater pipeline communicated with the first dosing system. Through the two dosing systems, full-automatic dosing system automatically adds agents into the wastewater, can effectively stabilize the dose of the agents and reduce the fluctuation of the dose, effectively controls the use cost of the agents, and is safe, simple and convenient.

The invention relates to a cable and especially relates to a cable used for an elevator. The cable comprises a plurality of conductors and a plurality of insulators covering the conductors respectively. A female adhesive tape with a clamping groove and a male adhesive tape with a projection part are respectively arranged on two sides of each insulator, and the insulators can be detachably connected through the female and male adhesive tapes. After the insulators are mutually connected, the projection part of the male adhesive tape of any insulator is totally inserted into the clamping groove in the female adhesive tape on the adjacent insulator. Compared with the prior art, the detachable connection of two insulators are directly realized by interaction between the female and male adhesive tapes, and workers are enabled to increase the number of the conductors in the cable according to the practically increased number of devices in an elevator car in the future, so that the weight of the whole cable is effectively controlled, the production cost of the whole cable is effectively lowered, and the power consumed by the elevator car in the operation process is simultaneously lowered.

The invention provides a charging and discharging control method and an energy storage system, which are applied to the technical field of direct current energy storage. The method characterized in that a preset voltage range is set, the lower limit value of the preset voltage range is greater than the upper limit value of the rated voltage range of a DC / DC converter, and after the battery voltage of an energy storage battery is acquired, if the obtained battery voltage is within the preset voltage range, the following battery storage mode is executed: controlling a DC / DC converter in the energy storage inverter to be in a bypass state, and controlling a DC / AC converter in the energy storage inverter to perform current conversion work. According to the method, under the condition that the battery voltage is larger than the upper limit value of the rated voltage range of the DC / DC converter, the DC / DC converter is controlled to be in a bypass state, the DC / AC converter directly carries out current conversion work, limitation of the DC / DC converter is removed, and therefore the higher battery voltage is matched, and the use range of the energy storage inverter can be widened within a certain range.

The invention relates to a cylinder type flanging mechanism for a battery shell, and belongs to the technical field of flanging of battery shells. The cylinder type flanging mechanism comprises a workbench, wherein a bottom die is arranged on the workbench; a mounting post is fixed on the workbench on the right side of the bottom die; a mounting plate is fixed on the left side wall of the mounting post; a flanging reset mechanism for flanging is arranged over the bottom die corresponding to the bottom die; the flanging reset mechanism comprises a mounting bracket, a flanging knife and a transmission rod moving up and down; the flanging knife is arranged at the lower end of the transmission rod through a knife holder; a reset plate is fixed at the upper end of the transmission rod; a spring is arranged between the reset plate and the mounting bracket on the left and right sides of the transmission rod; and a cylinder for driving the transmission rod to move downwards is vertically arranged over the transmission rod. The cylinder type flanging mechanism is convenient to operate. The use cost and maintenance cost are controlled effectively while the production efficiency is ensured.

The invention discloses an intelligent humidifier for textile use. The intelligent humidifier comprises a box body, wherein a water tank is fixedly connected to the bottom of the inner cavity of the box body; a water level detecting device is fixedly connected to the bottom of the inner cavity of the water tank; a power supply is fixedly connected to the right side of the inner cavity of the box body; a connector is fixedly connected to the top, positioned in the inner cavity of the box body, of the water tank; an ultrasonic humidifying device is fixedly connected to the top, positioned in the inner cavity of the box body, of the connector; and a transmitting device, a timing device and a processing device are arranged in sequence from top to bottom at the top of the right side of the inner cavity of the box body. According to the intelligent humidifier for textile use, the box body, the water tank, the water level detecting device, the power supply, the connector, the ultrasonic humidifying device, the transmitting device, the timing device, the processing device, a temperature detecting device, a first humidifying opening, a second humidifying opening, a water inlet, a humidity detecting device, a display, a power switch, a humidity control switch and a timing switch are used cooperatively, and therefore the problems that the conventional humidifier used in a textile factory is poor in the humidifying effect and consumes too much money are solved.

The invention provides a line address providing method and device, a server and a storage medium, and belongs to the technical field of the Internet. The method comprises the following steps: acquiring bandwidth information of a plurality of CDN servers; when a line address acquisition request in the target live broadcast room is received, determining a plurality of effective lines from the plurality of target lines according to the bandwidth information of the plurality of CDN servers and the bandwidth thresholds of the plurality of target lines; and providing the line addresses of the plurality of effective lines for the user. According to the invention, the broadband information of the CDN servers is obtained, and the plurality of effective lines are determined according to the bandwidth information of the plurality of CDN servers and the bandwidth thresholds of the plurality of target lines. The effective line is determined according to the bandwidth information of the CDN server and the bandwidth thresholds of the plurality of target lines, so that the bandwidth occupation amount of the CDN server corresponding to the effective line can be ensured to meet the threshold requirement, and the bandwidth use cost is controlled.

The invention discloses an method for extinguishing and cooling activated carbon in a front discharge hopper of an adsorption tower. The method comprises the following steps: 1) acquiring a thermal imaging image of a material entering a tail imaging area (3) of a vibrating screen (2) by using a thermal imager (1); 2) judging whether the material entering the imaging area (3) has a high-temperature point or not according to the thermal imaging image, and if it is judged that the thermal imaging image has the high-temperature point, recording the finding position of the material at the high-temperature point in the tail imaging area (3) of the vibrating screen (2); and (3) when the materials at the high-temperature point move into a discharge hopper (5) connected with a discharge port of a conveyor (4), carrying out fire extinguishing and cooling treatment on the high-temperature materials through a spontaneous combustion activated carbon extinguishing and cooling device arranged at the upper part of the discharge hopper (5). High-temperature activated carbon is detected at the tail part of the vibrating screen, and is treated in a flowing and falling state when the high-temperature activated carbon falls into the stock bin, so the problem that high-temperature activated carbon particles are difficult to comprehensively detect and treat is solved, and the safety of the system is improved.

The invention discloses an authentication method and system of a home gateway in an access WPA / WPA2 authentication mode, and relates to the field of home gateway access authentication. The method comprises the steps of S1, obtaining characteristic information of an access device which needs to access the home gateway, and storing the characteristic information in the home gateway; S2, after starting the access device which needs to access the home gateway, requesting for access authentication to the home gateway; and S3, judging whether the characteristic information of the current access device is stored by the home gateway; if so, succeeding in authenticating the current access device by the home gateway; otherwise, failing in authenticating the current access device by the home gateway, and authenticating the current access device again through a WPA / WPA2 authentication mode by the home gateway. According to the authentication method and system of the home gateway in the access WPA / WPA2 authentication mode, network security can be ensured while the authentication process of device access to the home gateway is simplified; the implementing process is not only relatively simple, but the use cost is also controlled; and good extendibility is provided for the authentication method of the home gateway in future.

A grassland boundary recognition method and an intelligent mowing device using the method, which determines the eigenvalue range of the grassland according to the brightness of the working environment, and screens the pixels in the acquired external scene image according to the eigenvalue range, and compares them with the external scene image after statistical screening. Connected pixels at the lower edge of the scene image to determine whether the intelligent mowing device is within the boundary of the grass. The invention realizes the identification and judgment of the grass boundary by simply screening and counting the pixel values ​​of the image itself, and the calculation and processing of the image is relatively simple, thus effectively reducing the hardware cost and calculation overhead of the intelligent mowing device. The invention can improve the recognition efficiency of the grass boundary under the premise of ensuring the recognition accuracy.

The invention discloses a device for manufacturing a bicolor co-extruded plastic-wood floor. The device comprises a forming mold and two co-extruders connected to the forming mold. The forming mold comprises a discharging outlet and four extrusion tube sets which are in the same shape and are connected to the discharging outlet. Two of the extrusion tube sets are arranged on the upper portion of the discharging outlet, the other two extrusion tube sets are arranged on the lower portion of the discharging outlet, and the extrusion tube sets arranged on the upper portion and the lower portion ofthe discharging outlet are in mirror symmetry with the discharging outlet as the axis; the extrusion tube sets arranged on the upper portion or the lower portion of the discharging outlet are in mirror symmetry with the central line perpendicular to the length direction of the discharging outlet as the axis, and the two extrusion tube sets located on the upper portion or the lower portion of thedischarging outlet are connected through a pipeline; and each extrusion tube set comprises two Y-shaped extrusion tubes, wherein one ends of the two extrusion tubes are connected mutually, and the other two ends of each extrusion tube are connected to the discharging outlet. The device for manufacturing the bicolor co-extruded plastic-wood floor is reasonable in design, the upper surface and the lower surface are extruded towards the discharging outlet simultaneously, the extrusion speeds of the extruders are the same due to the same paths of the extrusion tube sets, and the bicolor co-extruded plastic-wood floor with different colors of the upper and lower surfaces is formed.

The present invention provides a high current electric conduction device comprising a probe and a probe bar arranged on an outer circumference of the probe in a sleeving manner and slidably connectedto the probe. The high current electric conduction device further comprises a contact head, and the contact head is arranged on an outer circumference of a front end of the probe in a sleeving mannerand is in detachable connection with the probe bar. In the high current electric conduction device provided in the invention, the contact head and the probe bar are split type pieces, different materials are adopted for different functional requirements of different regions, strength of a contact end is enhanced, and service life of the high current electric conduction device is prolonged; the high current electric conduction device is simple in structure and easy to manufacture, and cost of use can be well controlled.

The invention discloses a wireless medical monitoring system, which is used for solving the problems that in the prior art, lines are too many and inconvenient to manage due to the fact that differentdevices of a monitoring system need to be connected through wires, and monitors need to be replaced when postoperative patients are transferred due to the fact that the lengths of the wires are not adjustable. The wireless medical monitoring system comprises an acquisition device which is installed on a predetermined part of a patient or an appointed position near the patient and is used for acquiring physical sign information of the appointed part of the patient; a wireless transmitting device which is electrically connected with the acquisition device and used for transmitting the physicalsign information to a wireless receiver through a wireless network; the wireless receiver used for receiving the physical sign information and providing the physical sign information for the monitor;and the monitor used for carrying out data analysis and processing on the sign information and displaying a monitoring result obtained after data analysis and processing according to a preset mode soas to realize real-time monitoring on the patient. The system provided by the invention is portable and can realize wireless real-time uninterrupted monitoring.

The invention belongs to the technical field of water conservancy and hydropower, and particularly relates to a buoyancy water lifting device for water conservancy and hydropower which comprises a device body, an air pump is mounted at the top of the device body, a fixing sliding groove is formed in the front end of the device body, a water bucket is mounted in the middle of the fixing sliding groove, and a fixing block is mounted on the back of the water bucket. A connecting port is formed in the top of the fixing block, an air conveying pipe is arranged at the bottom of the fixing block, a bottom air bag is installed at the bottom of the water bucket, a water inlet is formed in the front end of the water bucket, and a drainage valve is arranged on the outer side of the water bucket. According to the buoyancy water lifting device for water conservancy and hydropower, automatic water lifting operation can be achieved by effectively utilizing buoyancy through the air pump and the bottom air bag, the water bucket can move up and down conveniently through the fixed sliding groove and the mounting block, meanwhile, the water bucket cannot shake freely during lifting, and the water lifting process of the device can be conveniently shot and recorded through the camera; the air pump and the bottom air bag can be directly connected and communicated through the connecting groove and the connecting port.

The invention discloses a method for eliminating nitrite in drinking water by utilizing enzyme residues, which comprises the following steps: directly adding enzyme residues into drinking water containing nitrite, and reacting at 5-50 DEG C for 1-120 hours. The invention also discloses a method for eliminating nitrite in drinking water by using enzyme residues, which comprises the following steps:evaporating and concentrating an extract obtained by soaking enzyme residues in a solvent to obtain a concentrate, adding the concentrate into drinking water containing nitrite, and reacting at 5-50DEG C for 1-120 hours. On one hand, enzyme production by-products are recycled, waste residue discharge is reduced, and the environment is protected; and on the other hand, a water purification product with a good removal effect on nitrite in drinking water is obtained. The environment is protected, the safety of drinking water is guaranteed, and the application value is wide.

A membrane mobile polymer microfluidic chip and a preparation method of the same. The microfluidic chip comprises: a first substrate (100), a membrane (300), several structure parts (101) located on one surface of the first substrate (100), several first through holes (102) located on the first substrate (100), and a second substrate (200). One surface of the second substrate (200) is attached to the other surface of the first substrate (100), and the other surface of the second substrate (200) is smooth. The second substrate (200) is provided with a second through hole (201) corresponding to the first through hole (102) of the first substrate (100). The first through hole (102) and the second through hole (201) form an integral through hole (400). The membrane (300) is attached to the other surface of the second substrate (200). The preparation method comprises the following steps: disposing at least one fuse wire (103, 202) on welding surfaces of a first substrate (100) and a second substrate (200); and attaching the first substrate (100) to the second substrate (200) and fusing the fuse wire (103, 202) to welding the first substrate (100) to the second substrate (200), and after welding, attaching a membrane (300) to a surface of the second substrate (200).

The invention relates to the technical field of packaging, and particularly relates to a packaging product and a production method thereof. The method comprises the steps: constructing a silica gel fence with a packaging region on the inner side along the side wall of a packaging substrate according to a first preset height by using fluid silica gel through a first dispensing machine, and enabling an electronic element to be located in the packaging region; after the silica gel fence is cured, flatly laying fluid epoxy resin to a second preset height in the packaging region through a second dispensing machine, wherein the second preset height is smaller than or equal to the first preset height; and baking and curing the epoxy resin according to the preset baking condition to obtain the packaged product so that the production cycle of the packaged product is shortened. The flowing range of the epoxy resin is limited through the silica gel fence, limitation of the epoxy resin on an external structure is reduced, the thickness of a packaged product can be controlled by the height of the silica gel fence, and regulation and control are convenient and fast.