32results about How to "Make fast" patented technology

The invention provides a semiconductor laser element and a light-emitting device. An electron blocking layer is arranged between a second coating layer and a second waveguide layer of the semiconductor laser element; the second semiconductor layer is doped with a P-type dopant, the P-type dopant in the electron blocking layer has at least one doping concentration peak, the doping concentration of Mg at the doping concentration peak is smaller than the maximum doping concentration of the P-type dopant in the second semiconductor layer, and the P-type dopant in the electron blocking layer gradually approaches the direction of the electron blocking layer. The doping concentration of the P-type dopant in the second coating layer is provided with a plurality of subareas, and the doping concentration curve of the P-type dopant is gradually reduced along the plurality of subareas. Due to the descending trend of the Mg doping concentration in the second semiconductor layer, it can be guaranteed that the second semiconductor layer can provide enough holes, the hole injection efficiency in the quantum well layer is improved, and the light emitting efficiency is improved. Meanwhile, due to the arrangement of the second semiconductor layer, light absorption can be reduced, and the light emitting effect of the device is improved.

The present invention discloses a self-generating device and a wireless switch using the same, belonging to the field of self-generating devices. A self-generating device of the present invention comprises a coil assembly and a permanent magnet assembly. In the initial state, the left and right ends of the soft magnetic plate respectively contact the first permanent magnet and the second upper soft magnetic plate to form a first closed magnetic circuit; when the soft magnetic plate rotates relative to the permanent magnet assembly, the left and right ends of the soft magnetic plate respectively contact the first upper soft magnetic plate and the second permanent magnet to form a second closed magnetic circuit; the direction of the magnetic lines of force passing through the soft magnetic plate in the first closed magnetic circuit is opposite to the direction of the magnetic lines of force passing through the soft magnetic plate in the second closed magnetic circuit, and the coil generates power according to the principle of electromagnetic induction. A wireless switch of the present invention comprises a radio frequency control board, a switch for controlling electrical equipment, and the above-mentioned self-generating device. The coil of the self-generating device is electrically connected to the radio frequency control board, and passive wireless switch control can be realized.

The invention discloses a modular construction method suitable for coil heat exchangers for boilers of various models. The modular construction method comprises the following steps that a packaging frame of the coil heat exchanger is designed and manufactured, modular manufacturing of the coil heat exchanger is conducted, a combined hoisting tool is installed, and modular installation of the coil heat exchanger is conducted. The modular construction method is suitable for integral manufacturing, transportation and turnover hoisting of coil heat exchangers for boilers of various models, effectively solves the problem that a large coil heat exchanger is inconvenient to turn over and hoist, assemble a suspender at high altitude, weld a header at high altitude and test pressure, optimizes the construction process, saves the cost, and effectively improves the construction safety.

This invention discloses a ketoisomerase mutant and its application in the preparation of D-chiral inositol, belonging to the field of genetic engineering technology. The ketoisomerase mutant is obtained by mutating the amino acid sequence shown in SEQ ID NO.1, specifically by mutating amino acid position 62 and / or amino acid position 175 of the amino acid sequence shown in SEQ ID NO.1. After the above-mentioned mutation of the wild-type thermostable ketoisomerase, the resulting ketoisomerase mutant not only retains the advantages of the wild-type thermostable ketoisomerase—its heat resistance and susceptibility to temperature fluctuations—but also exhibits higher enzyme activity. When co-catalyzing the reaction of muscle inositol to D-chiral inositol with inositol dehydrogenase, it can further improve the conversion rate and yield of D-chiral inositol even at high substrate concentrations.

The invention discloses a deamination and grinding process for the surface of CMF integrated colored crystal glass, which belongs to the technical field of colored crystal glass preparation, and comprises the following steps: performing bottom sealing protection on the tin surface of the tempered glass; performing plasma treatment on the air surface of the tempered glass; degassing polyurethane ink, coating the deamination polyurethane ink on the air surface of the tempered glass and performing pre-crosslinking; deamination of the pre-crosslinked polyurethane ink layer by a pressing method or a vacuum method; performing embossing, secondary crosslinking and grinding on the air surface of the tempered glass in sequence to obtain a finished product, wherein the polyurethane ink comprises a first polyol and a second polyol, wherein the first polyol is a polyol having a diimidazole structure, and the second polyol is poly-ε-caprolactone diol; and the invention can directly form a pattern with a strong concave-convex feeling on the glass surface coating through a simple coating treatment and embossing process, thereby improving production efficiency.

The present invention discloses a lightweight quick-install wall panel for concrete frame buildings and a manufacturing method thereof, wherein the wall panel comprises a wall panel core, peripheral components and plug-ins, wherein an inner channel is provided in the wall panel core to reduce its own weight, and the inner channel can be used for threading; the peripheral components are enclosed and fixed on the four sides of the wall panel core, and the end face caps are respectively provided with perforations aligned with and penetrating the orifices at both ends of the inner channel, so as to facilitate pouring to form the inner channel, wherein a pouring port connected to the wall panel core is provided on one side of the side caps, so as to facilitate pouring and pouring; the plug-ins are respectively arranged at the four corners of the peripheral components, so as to be connected to the concrete frame structure; the present invention also discloses a manufacturing method of a lightweight quick-install wall panel for concrete frame buildings. The present invention solves the technical problems of the prior art that the wall panel is heavy, the manufacturing is complicated, and the amount of wire slot opening is large, and achieves the beneficial effects of further reducing the weight of the wall panel, simplifying the manufacturing, and reducing the amount of wire slot opening.

The utility model discloses a portable pipeline water pressure test tool, which particularly relates to the technical field of pipeline water pressure tests and comprises a water injection main pipe and water injection branch pipes. The side wall of the water injection main pipe is fixedly connected with one ends of a plurality of water injection branch pipes, and the other ends of the water injection branch pipes are connected with corresponding to-be-detected pipelines; one end of the water injection main pipe is connected to a water source through a booster pump; a pressure gauge is fixedly mounted on the side wall of the water injection main pipe; blocking plates are fixedly installed at the two ends of the to-be-detected pipeline, holes used for communicating the water injection branch pipe with the interior of the to-be-detected pipeline are formed in the blocking plates, and the water injection branch pipe is fixedly connected with the to-be-detected pipeline. The tool is simple in structure, quick to manufacture, convenient to use and easy to carry; and if the installation work of a 1000MW thermal power generation construction project plant area water supply pipeline is considered, compared with a traditional method of carrying out a hydraulic pressure test on pipelines one by one and the like, 200 work days of labor can be saved, the tool can be recycled, and waste is avoided.

The application discloses a D-mangiferoline dehydrogenase MtOEPa mutant and application thereof, and belongs to the technical field of genetic engineering. The amino acid sequence of the D-mangiferoline dehydrogenase MtOEPa mutant is shown as SEQ ID NO. 4. The D-mangiferoline dehydrogenase MtOEPa mutant has stronger affinity to a substrate myo-inositol, higher catalytic efficiency and higher enzyme activity, and can significantly improve the conversion rate of a reaction and the yield of D-chiro-inositol when catalyzing the reaction of myo-inositol to generate D-chiro-inositol.

The invention discloses a D-formononeol dehydrogenase MtOEPa mutant and application thereof, and belongs to the technical field of gene engineering. The amino acid sequence of the D-formononol dehydrogenase MtOEPa mutant is as shown in SEQ ID NO. 4. The D-formononeol dehydrogenase MtOEPa mutant disclosed by the invention has stronger affinity to a substrate muscle inositol, higher catalytic efficiency and higher enzyme activity, and can significantly improve the conversion rate of the reaction and the yield of the D-chiral inositol when catalyzing the muscle inositol reaction to generate the D-chiral inositol.

The invention provides a local chromium plating method and device for a main cylinder hole of an aero-engine special-shaped cylinder accessory. The method comprises the steps that an upper cylinder opening and a lower cylinder opening of a main cylinder body of the special-shaped cylinder accessory are sealed and blocked through an upper isolation body and a lower isolation body respectively, hole wall areas at cylinder opening sections are isolated, and the upper isolation body and the lower isolation body are fixedly blocked on the upper cylinder opening and the lower cylinder opening of the main cylinder body through clamping of an upper plate and a lower plate; a hoop is fixedly connected to the outer wall of the main cylinder in a surrounding manner, and is connected with a cathode of the chromium plating tank through a lead; the auxiliary anode bar vertically and sequentially penetrates through the upper plate and the bar body through hole of the upper isolator, and the lower end part of the auxiliary anode bar is accommodated and supported in the accommodating blind hole of the lower isolator; the auxiliary anode bar is electrically connected with the chrome plating tank anode through a wire. The device is simple and small in structure, short in processing and manufacturing period and low in cost; installation is simple and rapid, and production preparation time can be shortened; the problem that chromium plating is difficult in the deep hole area of the part is solved, uniformity and consistency of chromium plating of the inner hole of the cylinder are guaranteed, and the method can be popularized and used for local chromium plating of the inner holes of the accessory cylinders of most aero-engines.

The utility model discloses an automobile door emergency unlocking handle die which comprises a base, and a cooling box is fixedly arranged in the middle of the upper end of the base. The cooling cavity is formed in the cooling box, a fixed mold is arranged in the cooling cavity, three fixed mold grooves are formed in the upper end of the interior of the fixed mold, the fixed mold grooves are distributed at equal intervals, and cooling holes are formed in the positions, located at the front ends and the rear ends of the fixed mold grooves, of the interior of the fixed mold. And demolding is difficult after the handle is manufactured.

The utility model provides a combined screw pump stator, which relates to the technical field of screw pumps, and comprises at least N combined stators, the combined stators are cylindrical components, spiral stator cavities are arranged in the combined stators along the length direction of the combined stators, the adjacent stator cavities are on the same spiral line track, and the N is a positive integer greater than or equal to 1. A positioning hole matched with the combined stator is formed in the connecting piece, an annular limiting ring is coaxially arranged in the middle of the positioning hole, flange plates are arranged at the two ends of the screw pump stator respectively, and pull rods are detachably connected between the connecting piece and the flange plates. The screw pump stator has the advantages that reprocessing is not needed, only existing parts need to be used for installation and extension, the processing difficulty and cost of screw pumps with different lengths are reduced, and the manufacturing of the screw pump stators with different lengths and models is simpler and more convenient.

The present invention relates to a multi-dimensional force and torque sensor arm structure and a multi-dimensional force and torque sensor. The multi-dimensional force and torque sensor arm structure includes an outer ring, an inner ring and at least two strain beams. The inner ring is located inside the outer ring and is coaxially arranged with the outer ring. At least two strain beams are evenly spaced along the circumference of the inner ring. Each strain beam includes a main beam and a secondary beam arranged crosswise with each other. Both ends of the secondary beam are connected to the inner wall of the outer ring. Both ends of the main beam are respectively connected to the middle position of the secondary beam and the outer wall of the inner ring. A first strain gauge is arranged on the main beam. A second strain gauge and a third strain gauge are arranged at intervals on the secondary beam. The first strain gauge and the second strain gauge are respectively located on both sides of the main beam. The first strain gauge, the second strain gauge and the third strain gauge are all located on the same side of the inner ring. In the multi-dimensional force and torque sensor arm structure, the production of all the first strain gauges, the second strain gauges and the third strain gauges can be completed at one time, thereby improving the processing efficiency of the multi-dimensional force and torque sensor.

The invention discloses an electrolysis-laser composite flexible machining method for an array fine structure, and relates to the field of electrolysis-laser composite flexible machining for the array fine structure. The method integrates a mask processing technology and a laser shaping technology for innovation. A conductive layer is arranged on the wall surface of the array through hole of the porous mask plate, and line band laser penetrates through the array through hole to realize laser spot shaping. And the conductive layer and the shaping laser spots act on the same area for electrolysis-laser combined machining. By means of mutual matching movement adjustment of the porous mask plate and the line belt laser source, different laser spot shapes and array structures can be conveniently switched, array micro-pore structures or array micro-pit structures can be machined, and array micro-groove structures can be machined in the mode that the porous mask plate and the line belt laser source are synchronously fed. The invention provides a low-cost and high-efficiency flexible processing technical method which is easy to implement and high in practicability.

The invention discloses a large-span prestressed concrete holed beam frame structure system reinforced by section steel and a design method thereof. The large-span prestressed concrete holed beam frame structure system comprises a prestressed concrete beam, prestressed tendons, common full-length reinforcing steel bars, the section steel for reinforcing a hole, hole upper and lower chord stirrups, hole upper and lower chord angle ribs, stirrups on the side edge of the hole and reinforcing inclined ribs on the side edge of the hole. Wherein the profile steel and the upper and lower chord angle ribs of the hole are mainly used for supplementing the loss of strength and rigidity of concrete caused by hole opening, and the stirrups and the inclined ribs on the side edges of the hole are used for bearing shear force transmission of a concrete beam. By adopting the reinforcing measures to reinforce the hole, the site construction is convenient and quick, the component mounting efficiency is improved, the use amount of reinforcing steel bars can be greatly reduced, the congestion of the reinforcing steel bars in a core area is avoided, the section height of the component can be reduced, the self weight is reduced, and the anti-cracking performance and the bearing capacity of the component are improved, so that the anti-seismic performance of the whole frame structure is improved.

The present disclosure provides a lighting device and a method and system for controlling the lighting device, wherein the lighting device control method is a method for controlling the lighting device by an effect application executed by at least one processor on a director terminal, comprising the steps of: generating a library setting a light emitting mode of a plurality of lighting devices; generating a scenario setting a light emitting mode of the plurality of lighting devices within a specified time; generating a performance preparation data including at least one of the library and the scenario; providing the generated performance preparation data to the plurality of lighting devices; transmitting a lighting device control signal to the plurality of lighting devices, the lighting device control signal commanding execution, interruption or termination of at least one of the library and the scenario within the provided performance preparation data; and implementing a comprehensive lighting control performance effect according to the transmitted lighting device control signal.

The utility model discloses a compatible sand-blasting and paint-spraying protection device, relates to the technical field of sand-blasting and paint-spraying at the position of a motor base part of a whole speed reducer, and can effectively reduce waste of cost caused by repeated manufacturing of sand-blasting and paint-spraying protection tools and achieve compatibility of the sand-blasting and paint-spraying protection tools, so that the production takt is effectively optimized, and the labor intensity of operators is reduced. In the compatible sand-blasting and paint-spraying protection device, an annular groove is formed in the junction surface of the compatible protection tool plate; two through holes which are symmetrical by 180 degrees are formed in the annular groove, and the through holes are used for lifting and hoisting through lifting bolts; the plug rod comprises a shaft body and a flange ring connected with the shaft body through a reducing part. The outer diameter of the flange ring is smaller than the groove width of the annular groove, and the thickness of the flange ring is smaller than the groove depth of the annular groove. And the shaft part body is smaller than a threaded unthreaded hole of the motor base.

The present invention provides a method for making a stencil using only foil or film materials, a method for directly using software to drive a laser beam to cut and remove materials, and a method for selectively making a transparent opening in a graphic area of ​​a continuous material, replacing the traditional indirect means of blocking the mesh holes in the non-graphic area of ​​a woven screen material with transparent openings, and keeping the openings in the graphic area in a transparent state, to make a stencil. By adding a structural wire for tensioning and connecting in the opening area, the disadvantages of a screen made of metal foil or polymer film that is not suitable for patterns with a large opening aspect ratio, a large opening area, and a large opening side are overcome, and at the same time, the problem of a complex template production process and a low degree of automation is solved. The stencil produced by the present invention has high precision and quality, a simple, fast, and environmentally friendly manufacturing process, is easy to operate, and materials and equipment are easily available, and the cost is low, and it can be used for the production of various high-performance material distribution and molding stencils.

The utility model discloses a large-diameter pipeline welded junction assembly tool which comprises a first pipeline and a second pipeline, and the inner wall of the first pipeline and the inner wall of the second pipeline are both connected with a tool part assisting in opening alignment of the first pipeline and the second pipeline. The tool part comprises a first fixing block and a second fixing block which are connected with the first pipeline and the second pipeline respectively, and a double-thread screw rod is horizontally arranged between the first fixing block and the second fixing block. The device is simple in structure, the double-thread screw rod is arranged to be connected with the first fixing block and the second fixing block respectively, when the double-thread screw rod rotates, the first fixing block and the second fixing block can move synchronously, and the first fixing block and the second fixing block are close to each other under the action of opposite thread rotating directions, so that the fixing effect is improved, and the service life of the device is prolonged. The tool for connecting the first pipeline and the second pipeline is simple in structure, fast to manufacture, convenient to use and capable of being recycled, and waste is avoided.

The present invention discloses a hydrophobic magnetic clay sponge material and a preparation method and application thereof. The present invention relates to the technical field of adsorption materials. The present invention dissolves dopamine hydrochloride in a tris(hydroxymethyl)aminomethane-hydrochloric acid buffer solution, then adds magnetic clay, alkylsilane and melamine sponge, stirs at high speed, and obtains a hydrophobic magnetic clay sponge after drying. The present invention uses dopamine polymerization to adhere magnetic clay on melamine sponge and then grafts silane hydrolyzed silica particles, and the obtained hydrophobic magnetic clay sponge material can have sufficient hydrophobicity, antibacterial properties of clay, and magnetic properties, which can be convenient for practical application and recycling, and can be reused.

The invention discloses a large-span prestressed concrete holed beam frame structure system reinforced by profile steel and stiffening plates and a design method of the large-span prestressed concrete holed beam frame structure system. The large-span prestressed concrete holed beam frame structure system comprises a prestressed concrete beam, prestressed tendons, common full-length steel bars, profile steel for reinforcing a hole, upper and lower chord stirrups of the hole and upper and lower chord angle ribs of the hole, stirrups are arranged on the side edges of the hole; and reinforcing inclined ribs are arranged on the side edges of the hole. Wherein the profile steel and the upper and lower chord angle ribs of the hole are mainly used for supplementing the loss of strength and rigidity of concrete caused by hole opening, and the stirrups and the inclined ribs on the side edges of the hole are used for bearing shear force transmission of a concrete beam. By adopting the reinforcing measures to reinforce the hole, the site construction is convenient and quick, the component mounting efficiency is improved, the use amount of reinforcing steel bars can be greatly reduced, the congestion of the reinforcing steel bars in a core area is avoided, the section height of the component can be reduced, the self weight is reduced, and the anti-cracking performance and the bearing capacity of the component are improved, so that the anti-seismic performance of the whole frame structure is improved.

The present invention discloses a tool for stud welding bending test, which solves the problems of reducing test costs, saving tooling production, and simplifying the fixing of stud welding. The present invention comprises a top plate and a wedge-shaped pad; a through hole is opened in the middle of the top plate, the through hole is adapted to the weld scar between the stud welding stud and the welded part in the sample to be tested, and the through hole is used to fit the stud welding stud in the sample to be tested; the number of the wedge-shaped pads is an even number, all the wedge-shaped pads are arranged in contact with each other along the normal direction of the top plate surface, the planes on all the wedge-shaped pads that are opposite to the wedge-shaped surfaces are parallel to the top plate surface, and along the arrangement direction of the wedge-shaped pads, the wedge-shaped surfaces of every two wedge-shaped pads overlap. The present invention has the advantages of low cost, convenient testing, and easy production.

The utility model discloses a bottom structure of a battery pack, the battery pack and electric equipment. The bottom structure comprises a first part formed by integral die casting and a platy second part connected to the lower part of the first part; wherein the first part comprises a bottom frame and a supporting plate, the supporting plate is used for supporting a battery cell in a battery pack, and two ends of the supporting plate are connected to the bottom frame; a first groove is formed in the lower surface of the supporting plate and matched with the second component to define a first channel, a first opening is formed in the side face of the supporting plate, and cell thermal runaway gas of the battery pack enters the first channel from the first opening. On the basis of realizing the required functions, the bottom structure is low in cost and quick to manufacture, and has the performances of high temperature resistance and high strength at the same time.

The present invention relates to a hazardous chemical storage cabinet positioning storage system, which belongs to the technical field of hazardous chemical storage cabinets, and includes a hazardous chemical storage cabinet body, a longitudinal lifting frame, an in-and-out moving frame, a pick-and-place adjustment frame, a clamping frame, and a hazardous chemical pallet. The hazardous chemical storage cabinet body is provided with a storage cavity and an equipment cavity. In the present invention, a positioning adjustment component driven by a stepper motor is provided. The stepper motor is an electric motor that converts an electrical pulse signal into a corresponding angular displacement or linear displacement. For each input of a pulse signal, the rotor rotates an angle or moves forward one step. The angular displacement or linear displacement outputted by the stepper motor is proportional to the number of input pulses, and the rotation speed is proportional to the pulse frequency, so that the hazardous chemicals can be accurately positioned and moved into the storage cavity of the storage cabinet. An electric clamping component is provided, and the hazardous chemicals can be electrically picked up and placed, so that the storage and retrieval of the hazardous chemical storage cabinet can be more convenient.

The application discloses a solder paste printing device suitable for small-batch products, which comprises a polyester film fixing module, a transmission module and an adjusting module; the polyester film fixing module comprises a polyester film with a printing pattern; the transmission module is used for fixing and position adjusting of a to-be-printed substrate; the to-be-printed substrate is arranged between the polyester film fixing module and the transmission module; and the adjusting module is used for height adjusting of the to-be-printed substrate. The solder paste printing of different thickness requirements can be realized by changing polyester films with different thicknesses, and the height and position of the substrate can be adjusted. The device can be suitable for small-batch and multi-variety products, and high-precision solder paste printing is realized.

The present invention discloses an optical fiber sensor based on a high-purity quartz pressure sensitive element and a preparation method thereof, comprising an optical fiber, a quartz sleeve, and a high-purity quartz pressure sensitive element; a through hole is provided in the quartz sleeve, and the optical fiber is inserted into the through hole; the quartz pressure sensitive element is connected to the quartz sleeve. The present invention can be applied to harsh environments such as corrosion resistance except for hydrofluoric acid and hot phosphoric acid above 150°C. Since biological tissues do not reject quartz materials, it is also applicable to applications such as monitoring of intracranial pressure; and it is fixed without glue by laser hot melting, which can improve stability, reliability and scope of application; the thickness of the quartz pressure sensitive element is controlled by an optical cold processing process, and no chemical corrosion and other processes are required, thereby improving the stability, reliability and life of the optical fiber sensor head; the manufacturing process of the present invention is simple and fast, the sensor is safe and reliable, and has good stability, and combined with the traditional optical cold processing process, it can achieve hot melting of quartz pressure sensitive elements with extremely small thickness.

The utility model discloses a prefabricated reinforcing mesh for building construction, which relates to the technical field of reinforcing meshes and comprises a plurality of transverse reinforcing steel bars and a plurality of longitudinal reinforcing steel bars, transverse supporting structures are mounted outside the transverse reinforcing steel bars, longitudinal supporting structures are mounted outside the longitudinal reinforcing steel bars, and heating structures are mounted on the lower wall surfaces of the transverse supporting structures. The transverse supporting structure comprises a convex supporting frame, a concave supporting frame and a supporting bottom plate. The convex support frame is movably sleeved outside the plurality of transverse steel bars, and the concave support frame is movably sleeved outside the plurality of transverse steel bars; the reinforcing steel bars are movably supported, an operator can conveniently change the size of a reinforcing steel bar mesh according to requirements, concrete members of different sizes can be conveniently manufactured, meanwhile, three layers of reinforcing steel bar meshes can be combined at a time, the mesh combination time can be saved, and the construction efficiency is improved. And the manufacturing speed of the concrete member is further increased.

The invention relates to the technical field of electric drive assembly testing, in particular to an electric drive assembly shaft voltage testing method and system. Comprising the following steps: arranging a grounding point on an electric drive assembly, and arranging a first measuring point and a second measuring point at two axial ends of a motor shaft; controlling the on-off of eleven grounding points to realize different test modes, dragging the electric drive assembly to operate by using the rack, and recording the voltage of the first test point and the second test point in each test mode; and analyzing the recorded voltages of the first test point and the second test point in each test mode, and judging whether a corresponding countermeasure needs to be made for the electric drive assembly or not. The electric drive assembly shaft voltage testing method is simple, whether the electric drive assembly bearing has the electrocorrosion risk or not can be accurately obtained, the testing item is extremely blocked, the corresponding countermeasure can be made according to the corresponding risk, the change corresponding to the countermeasure is extremely small, and the cost is extremely low.

The present invention relates to a device and method for rapidly preparing semi-solid metal slurry, which comprises a container for placing metal slurry, a permanent magnetic stirring mechanism for driving electromagnetic stirring of the metal slurry in the container, and a cooling mechanism for cooling the metal slurry. The purpose of the present invention is to provide a device for rapidly preparing semi-solid metal slurry, which can make the metal slurry evenly and fully cooled and stirred, and prepare high-quality semi-solid metal slurry. The advantages of the present invention are: using permanent magnets to generate magnetic force for non-contact stirring, saving energy and cost, making the metal slurry free from pollution, and stirring without dead angles.

The freeze-drying device comprises a freeze-drying box, a vacuum pump connector is formed in the outer wall of the freeze-drying box and sleeved with a one-way valve, strip-shaped plates are symmetrically arranged in the freeze-drying box, T-shaped blocks are arranged in the strip-shaped plates in a sliding mode, and a square frame is arranged between the T-shaped blocks; a plurality of placing mechanisms are arranged between the inner walls in the length direction of the square frame, a collecting mechanism is arranged in the freeze-drying box, and a freezing mechanism is arranged at the bottom of the inner wall of the freeze-drying box; through cooperation of a sliding net and a fixed net, raw materials are fixed, and through cooperation of a clamping block and a moving ring, an operator can conveniently place the raw materials into a placing groove; through cooperation of the freeze dryer and the exhaust grid, cold air is conveyed into the square frame, and raw materials in the circular ring cylinder are frozen; and through cooperation of the vent grooves and the exhaust holes, the raw materials in the containing grooves are frozen, cold air is conveyed to the raw materials in multiple directions, and freeze-drying manufacturing is accelerated.