25results about How to "Efficient replacement" patented technology

This application discloses a method for preparing ultra-high purity citric acid monohydrate based on supercritical CO2, belonging to the field of citric acid preparation technology. The method includes the following steps: dissolving citric acid monohydrate in an organic solvent to prepare a citric acid solution; spraying the citric acid solution into a supercritical CO2 environment to crystallize the citric acid using the supercritical anti-solvent effect; performing dynamic washing with pure supercritical CO2; and obtaining ultra-high purity citric acid monohydrate crystals after depressurization and drying. The citric acid monohydrate product prepared by this method has high purity, high light transmittance, low total metal ion content, controllable crystal habit, and low organic solvent residue, meeting the stringent requirements of high-end applications such as electronic and pharmaceutical grades.

This utility model discloses a conical bidirectional mixing head for cement mixing pile construction, comprising a hollow outer rod, within which a hollow inner rod is nested. A vertical main shaft is fixedly connected to the end of the inner rod, which serves as the mixing shaft and is a hollow shaft with a closed conical end. The inner rod is coaxially fixedly connected to the top of the vertical main shaft, and their inner cavities are interconnected. Straight blades and a grouting pipe communicating with the inner cavity of the vertical main shaft are vertically mounted on the vertical main shaft. The straight blades are the main mixing blades. A positioning sleeve is fitted onto the vertical main shaft. The outer rod and the positioning sleeve are fixedly connected through the free end of a C-shaped mixing blade, which is a secondary mixing blade. This mixing head achieves bidirectional rotation while improving and optimizing its structural form, resulting in stronger mixing capacity and anti-drilling characteristics, which is beneficial to the stability and uniformity of pile formation and can improve construction efficiency to a certain extent.

The present application relates to a kind of high-precision cold-rolled screw with medium carbon steel hot rolled wire rod in metallurgical technology field, preparation method and application.The present application is aimed at solving the technical problems of low first processing qualified rate of cold-rolled screw caused by poor material organization uniformity and low purity.The chemical composition of the wire rod according to the present application is as follows: C 0.52-0.58%, Si 0.15-0.35%, Mn 0.70-0.90%, Cr 0.10-0.35%, Al 0.015-0.045%, Ti≤0.0025%, [O]≤0.0015%, [N]≤0.0060% and the like, with the balance being Fe.The preparation method of the present application obtains uniform organization with cross-section hardness range ≤20HV through the combined action of narrow component design, continuous casting end electromagnetic stirring, high temperature diffusion annealing and "fast first and slow later" controlled cooling process.The present application is mainly used for manufacturing high-precision ball screw, and the finished product precision reaches more than 5 levels, with first cold-rolled forming qualified rate ≥85%.

The utility model relates to battery installation shell technical field discloses the gasket protruding structure of battery box, including installation shell and the battery box of being installed in the inside of installation shell shell body, the both sides of the shell body of installation shell are provided with the lock catch part in symmetrical form, the both sides of the box body of battery box are provided with the lock catch groove of buckle with lock catch part in two -two symmetrical form. The utility model in installation uses, through pre -installing in the door side frame near indoor in installation shell, using its lock catch part and the abutment lock catch of lock catch groove on battery box, forms the side door frame type assembly work, provides power supply for electronic lock, it has simple and convenient external installation performance, and the user daily replacement battery box is convenient, and the user only needs to pull out battery box from installation shell, can carry out daily replacement work to battery box, and the operation is simple and convenient, and the replacement efficiency is more efficient.

This utility model provides a lithium battery explosion-proof formation machine, comprising: a housing, within which an explosion-proof formation system is installed; the explosion-proof formation system includes a negative pressure extraction unit, a gas manifold unit, a vacuum control unit, a gas detection unit, and an inert gas replenishment unit; the negative pressure extraction unit is connected to the gas manifold unit, the gas manifold unit is connected to the vacuum control unit, and the inert gas replenishment unit is connected to the gas manifold unit; the gas detection unit is located in the gas flow path. By setting up the explosion-proof formation system, functional units such as negative pressure extraction, gas manifold, vacuum control, gas detection, and inert gas replenishment are integrated, forming a complete explosion-proof protection system that can effectively prevent the risk of combustion and explosion during the formation process.

The utility model discloses a kind of quick-mounting screen setting grinder, including grinder body and quick-mounting screen, quick-mounting screen is introduced from the side end installation of grinder body, the bottom position of grinder body side end is provided with screen pressing handle, grinder body side end top is equipped with screen positioning plate and fastener is connected on screen positioning plate, locking block is fixedly installed on the bottom net body of quick-mounting screen, fixed aperture is set on the upper end net body of quick-mounting screen. Through the above mode, the utility model can efficiently replace screen, the bottom of grinder body is increased screen pressing handle, quick-mounting screen is provided with fixed aperture and locking block, when screen is installed, quick-mounting screen is slid to bottom along screen pressing handle, after screen pressing handle is pressed down, front part is lifted and hits locking block, then quick-mounting screen is pulled to the screen positioning plate of equipment, quick-mounting screen can be fastened using screw, both ends of screen are firmly fixed by the above ingenious design, and the fixing mode is quick and simple, firm and reliable.

The utility model discloses an accessory detachable wisdom fire helmet and command system belong to fire helmet technical field. An accessory detachable wisdom fire helmet, including cap shell, still include: bolt nut structure, face guard, accessory attachment track and a plurality of T shape adjustable elastic clamping seat, each adjustable elastic clamping seat all is provided with detachable function module, wherein, detachable function module is one of processor module, positioning module, image module, combustible gas detection module and fall detection module, the utility model can realize the free combination to different accessory module, satisfy detachable easy replacement's use demand, realize the automatic acquisition of on -the -spot image data, environmental data, firefighter data etc. information, carry out monitoring and early warning, and carry out real -time communication through bone conduction earphone, improve the scientific nature and practicality of decision, further enhance the scientific nature of on -the -spot rescue action and guarantee firefighter life safety.

The utility model relates to tea maker technical field, specifically disclose tea maker ultraviolet sterilization water route module, include: tea maker main part and assemble in the water tank of tea maker main part inside, set up the placing plate of tea maker main part one side, and set up in the disinfection lamp tube of water tank, one side inner wall of water tank fixed mounting has the mounting block, and the arc slot is penetrated in mounting block top side, the outside of disinfection lamp tube is equipped with the quartz sleeve, the outside upper end of quartz sleeve is equipped with the mounting ring, and the mounting ring outside and arc slot between are adapted, the utility model avoids using bolt long time soaking in water and leads to the problem of silk, alleviates personnel maintenance burden, lets disinfection lamp tube and quartz sleeve's replacement or maintenance process more efficient, easy, improves the practicality of sterilization module.

The present application relates to a kind of detachable replacement type middle louvre, comprising: main frame, first glass plate, second glass plate, spacer frame, movable frame, closed assembly and louvre assembly;Movable frame rotates to closed state, mounting frame is in contact with spacer frame, mounting frame, first glass plate, second glass plate and spacer frame are combined to form a sealed cavity, and louvre assembly is located inside the sealed cavity;Pressurizing component is set to one side of mounting frame, for applying pressure to mounting frame towards spacer frame;Movable frame rotates to open state, and mounting frame can be removed from limiting slot.Through unlocking and rotating movable frame, maintenance personnel can repair or replace louvre assembly, and movable frame is rotated to closed state again, and pressure is applied to mounting frame towards spacer frame by pressurizing component;So that mounting frame and spacer frame are more closely contacted, so that after replacing louvre assembly, the sealed cavity can still be restored to sufficient sealing state.

A kind of urban rainwater pipe network and river network hydrodynamic accelerated calculation method based on data-driven surrogate model, comprising: based on bidirectional long short-term memory (BiLSTM), graph attention network (GAT) and residual connection, data-driven surrogate model Deep-Drain is constructed, for simulating the simplified process of urban rainwater pipe network and river network water flow;Mechanism model is constructed to simulate one-dimensional hydrodynamic process under measured rainfall and different return period design rainfall, and process data set of rainwater pipe network and river network flow process is constructed, while training set, validation set and test set are divided;Optimal hyperparameter combination of Deep-Drain is found by using Bayesian optimization;The efficiency improvement effect of Deep-Drain is quantitatively analyzed by typhoon storm event;The present application realizes the effective improvement of the calculation efficiency of urban rainwater pipe network and river network flow simulation process.

This invention provides a method for site-specific replacement of the creatine kinase promoter in the Huaxi bovine gene promoter, belonging to the field of animal gene editing and genetic breeding technology. It also provides a method for enhancing the function of bovine muscle cells. FTO Gene expression reagents include crRNA for upstream site knockout, crRNA for downstream site knockout, a Cas12i nuclease expression vector, and an FTO homologous substitution vector; the FTO homologous substitution vector includes... FTO upstream homologous arm of gene promoter, MCK gene promoter and FTO Downstream homologous arm of the gene promoter. The reagent was used in West China bovine cells. FTO Application in gene promoter replacement. This invention can specifically improve the expression efficiency of genes related to fat development in muscle tissue, providing an efficient and precise technical means for the genetic improvement of the performance of beef from Western China.

The application discloses a kind of full-automatic coil winding and film pasting integrated processing equipment, belong to precision automation assembly equipment technical field, the equipment includes rack, gantry mechanism, multi-station winding assembly, wire arrangement component, transfer mechanism, detection component, film pasting mechanism, code spraying transfer mechanism and tray mechanism;Rack is vertically layered and fixed on the upper and lower, four winding stations and two wire arrangement stations are symmetrically arranged in the lower part, the transfer mechanism is fixed in the middle of station, the gantry mechanism is connected to the upper part of rack, and each functional component is integrated in the gantry moving platform.The application realizes the automatic production of precise coil winding, wire arrangement, detection, film pasting, code spraying and tray through the compact layout of upper and lower layering, bilateral parallel and intermediate circulation, four-station parallel processing to improve productivity, and the product precision is guaranteed by cooperating with double-view CCD and height measuring mechanism.The equipment has strong versatility, small floor area and convenient maintenance, and is suitable for large-scale processing of various types of precise coils.

The application discloses a kind of transmission type water-cooled high-power laser collection devices, it is related to photoelectric instrument technical field, including: light-receiving cylinder, for one end having opening sealed cylinder, the cylinder wall of light-receiving cylinder is equipped with with its inner cavity communication liquid inlet and liquid outlet, for connecting external circulation pipeline, to form the cooling liquid circulation path that flows through inner cavity;Light-transmitting piece, sealing cover is located in the opening end of light-receiving cylinder, light-transmitting piece and cooling liquid in the inner cavity of light-receiving cylinder are sequentially arranged along laser incidence direction, so that the laser to be collected can be transmitted through light-transmitting piece, directly incident into cooling liquid and be absorbed.The device can directly, efficiently handle high-power laser residual energy and structure is more reliable.

The application discloses an Arduino-based image recognition fish tank filter cotton automatic replacement device, and relates to the technical field of fish tank filter cotton replacement.The device comprises a filter frame, a fixing mechanism, a replacement mechanism and a detection and feedback mechanism.The fixing mechanism is used for unwinding the filter cotton and compacting the filter cotton during unwinding.The replacement mechanism is installed on the filter frame and is opposite to the fixing mechanism.The detection and feedback mechanism comprises a filter cotton replacement system and is arranged above the filter cotton flat surface and used for detecting the filter cotton flat surface and performing control.The application uses the image recognition technology to analyze the color distribution, texture characteristics, particle size and distribution density of impurities on the filter cotton, can more accurately evaluate the pollution degree of the filter cotton, can more accurately determine the replacement time, can avoid resource waste and water quality deterioration, and can maintain the water quality of the fish tank.

This utility model discloses a combined heat exchanger, including a shell, an inner cavity of which is provided with a spiral heat transfer element, and a cover plate on one side of the shell that can seal its inner cavity. The cover plate can be initially connected to the shell through a limiting component, and then locked by a locking component. The limiting component and locking component used in this utility model significantly reduce disassembly steps and operation time, significantly improve equipment maintenance efficiency, reduce labor costs, and shorten the disassembly and installation time of the cover plate. This makes the maintenance, cleaning, and replacement of parts of the heat exchanger more efficient, reduces equipment downtime, and improves overall production efficiency. The limiting component and locking component work together to ensure the stability of the initial connection and ensure the connection strength between the cover plate and the shell through the locking component, maintaining the good sealing performance of the heat exchanger and ensuring stable and efficient heat exchange.

The application provides a flow transfer mechanism and a feeding and discharging device. The flow transfer mechanism comprises a first track, a first carrier, a second carrier, a second track and a third carrier. The first track comprises a pick-and-place station. The first carrier is movably connected to the first track. The second carrier is movably connected to the first track. The second track is arranged on one side of the first track. The third carrier is movably connected to the second track. A transfer assembly can alternately place boat bodies on the first carrier and the third carrier, and the third carrier can transfer the boat bodies to the second carrier. The first carrier and the second carrier can be alternately driven to the pick-and-place station, and the transfer assembly can alternately carry the boat bodies carried by the first carrier and the boat bodies carried by the second carrier after flowing out of the pick-and-place station. By transferring the boat bodies to the second carrier through the third carrier and alternately moving the first carrier and the second carrier to the pick-and-place station, the efficiency of providing the pick-and-place station with the boat bodies can be improved.

The utility model relates to the field of new energy automobile battery replacement cooling, concretely relates to a battery replacement battery cooling system, including vehicle control unit VCU, water pump and battery package, vehicle control unit VCU and water pump signal connection are set up with the cooling pipeline in the battery package, the water inlet of water pump and the cooling pipeline in the battery package is connected through the water inlet pipe, still include the gas drive cooling system, condenser and expansion water tank, one end of expansion water tank and the water outlet of cooling pipeline are connected through the water outlet pipe, the other end is connected through the circulating water pipe and water pump, and the condenser is installed on the circulating water pipe between expansion water tank and water pump, and the gas drive cooling system is connected with the cooling pipeline of battery package, and vehicle control unit VCU and gas drive cooling system signal connection control gas drive cooling system, have solved the low heat exchange efficiency or the higher cost of overall space occupation of the battery cooling at present stage, hindered the development of battery replacement technology, cannot satisfy the problem of the requirement of driver.

This utility model belongs to the field of medical auxiliary device technology, specifically relating to a CT auxiliary device. The device mainly consists of an upper limb support, a neck brace, a covering, and a fixing component. The upper limb support and neck brace are integrally molded using flexible materials such as medical-grade silicone and polyurethane foam, conforming to the patient's body contours, relieving upper limb fatigue, avoiding neck pressure, and improving patient comfort during examination. The neck brace is surrounded by a removable covering, which can be replaced at any time, effectively preventing the neck brace from being contaminated by grease, eliminating bacterial growth, and ensuring hygiene and safety. The fixing component is cleverly designed; medical staff can quickly install and remove the connecting parts using a push-pull crossbar, facilitating convenient replacement of the covering and improving work efficiency. Simultaneously, the stable support structure helps patients maintain correct posture, reduces limb movement, optimizes image quality, and the integral molded structure and high-quality materials enhance the device's durability, reduce maintenance costs, and have significant practical value.

The utility model discloses a portable water sample collection device, including frame, the top rotation of frame is connected with movable disc, the bottom of movable disc is sealed and is pasted with annular plate, and the fixed connection between annular plate and frame, the even of annular plate is equipped with a plurality of drain holes, the bottom of annular plate even fixed connection has a plurality of outer thread sleeve of penetrating to top. In the utility model, through the cooperation design of rotary movable disc and annular plate, the quick switching sampling of multiple sample bottles is realized, and the positioning of elastic locking rod and limiting hole ensures the alignment reliability of fixed pipe, drain hole and outer thread sleeve. The linkage structure of pumping and draining assembly and one -way valve can not only replace residual water sample efficiently to avoid cross -contamination, but also can complete sampling through the reciprocating motion of piston. The integrated design of winding disc and hose is convenient to store, and the space utilization is optimized by the staggered distribution of drain hole and outer thread sleeve.

The utility model discloses a planetary bidirectional stirring head for cement mixing pile construction, including hollow outer pole, the hollow inner pole is nested in the outer pole, the bottom fixed docking of outer pole is on the casing of gear box, and the inner pole inserts gear box inside and is fixed docking with the vertical main shaft of gear box, and the vertical main shaft is as the stirring main shaft, and is the hollow shaft of closed cone shape for the end, and the inner tube is coaxial fixed docking with the vertical main shaft top and the inner chamber is through, and the vertical main shaft is vertically provided with straight plate blade and the grouting pipe that communicates with the inner chamber of vertical main shaft, and the vertical main shaft has the auxiliary shaft through gear box switching, and the auxiliary shaft is as the auxiliary stirring axle, and is equipped with the auxiliary stirring blade on the auxiliary stirring axle. This stirring head can realize bidirectional stirring, and the structural form that the main stirring axle is combined with the auxiliary stirring axle has stronger stirring capacity and anti -bore -drill characteristic, especially when handling high water content silt, high plastic clay, contains thin sand interlayer or organic matter soil and so on complex stratum, has obvious advantage, and the quality of more guarantee is formed in a pile.

The utility model relates to photograph display device technical field, concretely is a kind of hand-held intelligent photograph display device based on bluetooth, including main part, display screen, button, magnetic attraction piece, charging hole and protective device, the display screen is fixedly connected in the surface of main part, the button is installed in the side of main part, the magnetic attraction piece is installed in the surface of main part, the charging hole is set in the lower end of main part;The protective device is fixedly arranged in the lower surface of main part, the protective device includes protective plate and clamping groove, the protective plate is rotatably connected in the lower surface of main part, the clamping groove is set in the lower surface of main part, the surface of protective plate is fixedly connected with fixed block, rotating rod is rotatably connected in the inside of fixed block, the end away from fixed block of rotating rod is fixedly connected with rotating plate.The utility model protective device, through the intercoordination between protective plate, rotating plate, pull plate, clamping block and first spring etc. component, realized to charging hole protection, improve the service life of equipment.

The utility model relates to a pull spring rotating shaft with oil injection hole, including rotating shaft body, axial oil injection channel, radial oil injection channel, shaft sleeve and lubricating cavity. Rotating shaft body is composed of shaft body and threaded connector, axial oil injection channel passes threaded connector to the midpoint in the shaft body, radial oil injection channel connects axial channel and lubricating cavity, and solid lubricating grease enters lubricating cavity through these channels, and plays the lubricating effect. In order to guarantee the punching precision, axial and radial punching frock have been designed, the inner thread of its connector is matched with threaded connector, and the punching channel corresponds the midpoint of axial and radial respectively, and the channel top is equipped with the circular truncated cone transition end, and the drill bit is convenient to enter. The utility model has the advantages of simple structure, convenient oil injection, good lubricating effect and can effectively prolong the service life of rotating shaft.