341results about How to "Simple material" patented technology

The invention relates to the technical field of seat cushion framework detection, in particular to an automobile seat cushion framework fatigue test method and system. The method comprises the following steps: acquiring information data of an automobile seat cushion framework sample; performing skeleton key part screening on the automobile cushion skeleton sample information data to obtain skeleton key part screening data; performing sensor data acquisition on the automobile seat cushion framework sample based on the framework key part screening data to obtain stress sensor acquisition data and deformation sensor acquisition data; and carrying out loading mode design on the information data of the automobile seat cushion framework sample to generate fatigue loading mode data of the automobile seat cushion framework. According to the invention, the accuracy and reliability of the fatigue test of the automobile seat cushion framework are improved by accurately screening key parts of the framework, designing a real loading mode, deeply detecting damage, predicting the service life and optimizing materials.

The invention relates to an anti-explosion high-temperature-resistant explosion test pipeline design method based on finite element simulation, and belongs to the field of pipeline design and application. According to the method, mechanical and heat transfer behaviors of the pipeline under the combined action of high temperature and explosive shock waves are analyzed by simulating extreme working conditions such as explosion, fire blast and detonation, and the safety performance of the pipeline is improved. The method comprises the following specific steps: firstly, setting explosion working condition parameters based on test requirements and related standards; secondly, establishing a three-dimensional finite element model, and performing fluid dynamic simulation analysis; then, through thermodynamics and explosion impact data analysis, temperature, pressure and stress distribution is obtained, and design parameters such as the geometric structure, the material and the wall thickness of the pipeline are optimized; and finally, verifying the safety and the stability through experiments. The method improves the design efficiency and reliability, and is suitable for high-risk experiment environments such as petrochemical engineering and mines.

The utility model discloses a booster pump of a hydrogen compressor, which comprises a base, and a hydrogen compression cylinder, a driving system and a balance gas tank are arranged on the base. The driving system drives a piston in the hydrogen compression cylinder to move back and forth to compress hydrogen in the cylinder body; the hydrogen compression cylinder is a composite cylinder body; two independent compression chambers are symmetrically arranged in the hydrogen compression cylinder, the balance gas tank is used for balancing the two compression chambers, and a gas inlet and a gas outlet which are communicated with the compression chambers are formed in the hydrogen compression cylinder; and one-way valves are arranged at the air inlet and the air outlet, and efficient compression of hydrogen can be achieved through the double compression cavities which are symmetrically arranged.

The invention relates to the technical field of pipeline cutting, in particular to intelligent cutting equipment for building heating and ventilation pipelines. Comprising a base, a cutting mechanism, a moving mechanism and an inner supporting mechanism; the cutting mechanism comprises a fixing frame, a hydraulic cylinder, a mounting seat, a cutting knife and a cutting motor; the moving mechanism is used for driving the fixing frame to move by a preset distance so as to complete cutting operation of building heating and ventilation pipelines with different lengths. The inner supporting mechanism comprises a supporting frame, a base plate, a connecting pipe, a rotating motor, a rotating shaft and an inner supporting piece. The rotary motor is arranged on the substrate, and an output shaft is connected with the rotary shaft; the inner supporting piece is used for conducting inner supporting and jacking operation on the building heating and ventilation pipeline, and the preset first inner supporting point and the preset second inner supporting point are symmetrically distributed and located on the two sides of the cutting knife. The device is reasonable in structural design and high in cost performance, the heating and ventilation pipeline is conveniently driven to rotate to complete cutting while stable and symmetrical inner supports are formed on the inner wall of the heating and ventilation pipeline, the problem of quality deviation caused by notch deformation is avoided, and the device is more practical.

The invention discloses cup cover detecting, stacking and packaging integrated equipment, and relates to the technical field of cup cover production. The cup lid detecting, stacking and packaging integrated equipment comprises a machine body, a rack, a storage mechanism and a discharging mechanism, the storage mechanism comprises a right-angle frame and a base plate, a first linear driver is installed at the end, away from the machine body, of the bottom of the base plate, and a second linear driver is installed at the position, close to the base plate, of the outer side of the machine body; the discharging mechanism comprises a main machine and a conveying discharging device, a first hydraulic cylinder is fixedly installed in the middle of the top of the main machine, and a second hydraulic cylinder is fixedly installed at the position, close to the arc-shaped positioning plate, of the top of the main machine through a support. A three-claw material hooking block is fixedly installed at the telescopic end of the first hydraulic cylinder, the purpose of preventing disorder is achieved, a plurality of cup covers can be grabbed and accurately stacked, disorder is not prone to occurring, and compaction and packaging are integrated.

The invention provides a special recombinant material applied to the fields of liquefied petroleum gas (LPG), liquefied ethylene gas (LEG), liquefied natural gas (LNG) A / B / C type independent liquid cargo tanks and part of low-temperature pipeline supports and a manufacturing method of the special recombinant material. The invention provides a manufacturing method of a special recombined material for the ultralow-temperature field. The manufacturing method comprises the steps of selection of a veneer tree species and an adhesive, determination of the thickness of a veneer and the adhesive applying amount, and rapid gum dipping and hot pressing of a thick veneer. According to the manufacturing method provided by the invention, the vacuum high-pressure impregnation adhesive is adopted, so that the effects of high impregnation efficiency, large impregnation amount and uniform resin distribution can be realized; and a temperature sensor and a pressure sensor are installed, so that early warning can be carried out in advance when abnormity occurs. The special recombinant material has excellent mechanical properties such as water resistance, compression resistance, bending resistance and shearing resistance at room temperature and ultralow temperature (-163 DEG C). The special recombinant material provided by the invention can be used for liquid cargo hold pressure-bearing wood of LPG, LEG and LNG ships and part of low-temperature pipeline brackets.

The invention belongs to the technical field of man-machine interaction dry electrode preparation, and particularly relates to a reusable antibacterial dry electrode and an assembly method thereof. According to the preparation method, a PEDOT / PSS dispersion solution is prepared at room temperature through an organic-solvent-free green chemical method for the first time, then the mass ratio of PEDOT / PSS to MPBCD is balanced, and rigid conductive polymer PEDOT / PSS is rapidly assembled into a conductive dry electrode film which is flexible, adjustable in bonding capacity and capable of being remolded for use in one step; wherein the mass ratio of PEDOT to PSS in the PEDOT / PSS dispersion liquid is 1: 3.8, the mass ratio of the PEDOT / PSS solution to the MPBCD solution is 1: 30, and the prepared dry electrode has good conductivity, can be repeatedly used for a long time, is soft and good in cohesiveness, and also has excellent regeneration and antibacterial properties. The EMG and EOG signals can be accurately measured according to the adhesion and skin compliance, and the sensor can be prepared by connecting a lead and a film, so that the sensor has a wide application prospect.

The utility model discloses a steel-concrete composite beam cast-in-place bridge deck slab construction supporting system which comprises narrow steel box girders, wood secondary ridges and wood formworks and is characterized by further comprising lug plates welded on the inner sides of the tops of the narrow steel box girders and steel main ridges fixedly connected between the adjacent narrow steel box girders through the lug plates. The cantilever steel pipe, the left inclined supporting rod and the right inclined supporting rod are arranged on the bottom plate cantilever plate on the inner side of the narrow steel box girder; the upper ends of the left inclined supporting rod and the right inclined supporting rod are connected with the midspan position of the steel main ridge, and the lower ends of the left inclined supporting rod and the right inclined supporting rod are connected with the cantilever steel pipes on the adjacent narrow steel box girders respectively. The wood secondary ridges and the wood formworks are sequentially arranged on the steel main ridges from bottom to top. A novel structural design is adopted, stress is reasonable, materials are conventional, installation is convenient, the construction speed is high, the construction cost is low, and compared with a full-space supporting system, the economic performance, the safety, the progress and the quality are greatly improved.

The invention relates to the technical field of metal processing, in particular to an automobile chip heat sink integrated forming device which comprises a processing platform, a control box and an aluminum alloy body are arranged on the processing platform, and an extrusion forming mechanism for pressing an aluminum alloy heat sink is arranged on the control box. An extrusion forming mechanism is arranged on the control box, a plate processing mechanism for flattening the aluminum alloy body is arranged on one side of the extrusion forming mechanism, an automatic pushing mechanism is arranged on the control box, a cooling auxiliary mechanism for cleaning and cooling the aluminum alloy body is arranged on the machining platform, the extrusion forming mechanism comprises an installation boss fixedly installed on the control box, and a fixing die is arranged on the installation boss. By arranging the extrusion forming mechanism and utilizing mutual cooperation of an extrusion mold, a pressing square plate and a cutting tool, pressing, heating shaping, cutting and demolding of a plate can be integrally completed, the integration degree is high, an aluminum alloy body does not need to be transferred back and forth among multiple machining devices, and the machining efficiency of the heat dissipation plate can be effectively improved.

The invention discloses counter-pressure casting equipment and a casting method thereof, and relates to the technical field of casting, the counter-pressure casting equipment comprises a supporting frame, and a static mold mechanism is mounted on one side of the supporting frame. According to the counter-pressure casting equipment, a third electric push rod works to push a rack to move, a gear rotates, a rotating rod and a rotating disc are driven to rotate, and a material receiving disc moves to the position below an upper movable mold; the material receiving disc is arranged, demolded products are received, the products can be conveniently received and fed by adjusting the position and the inclination angle of the material receiving disc, collision of the products is reduced, and the quality of the products is improved. The upper movable mold and the lower static mold are closed, the first cavity and the second cavity are communicated, the pressure in a closed space formed by the first cavity and the second cavity is balanced with the pressure in the sealing cover, rare gas continues to be filled into the sealing cover, molten metal enters the lower static mold and the upper movable mold through a liquid rising pipe to be filled, and the molten metal is formed in the upper movable mold and the lower static mold; and the product is formed under certain pressure, so that the forming quality of the product can be improved.

The invention relates to an intelligent cerebrovascular stent based on polymer short fibers and a preparation method thereof. The method comprises the following steps: carrying out electrostatic spinning on a polymer spinning solution to obtain polymer long fibers, freezing the polymer long fibers in liquid nitrogen, and carrying out low-temperature shearing dispersion to obtain polymer short fibers; a polymer in the polymer spinning solution is at least one of polycaprolactone, polylactic acid, gelatin, cellulose, fibroin, collagen and chitosan; uniformly mixing the temperature response high-molecular polymer and the polymer short fiber to obtain a 4D printing raw material; and designing a 4D printing model of a spider-leg-imitating structure, and performing 4D printing on a 4D printing raw material to obtain the intelligent cerebrovascular stent. According to the preparation method, the intelligent cerebrovascular stent with the spider-leg-imitating structure is prepared, the spider-leg-imitating structure design and the introduction of the polymer short fibers can endow the cerebrovascular stent with better shape adaptability and intelligent responsiveness, and the mechanical property and the anti-skid property of the cerebrovascular stent are effectively improved.

The invention belongs to the technical field of hook-and-loop fastener production, and particularly relates to a cutting device for hook-and-loop fastener production and a using method thereof.The cutting device comprises a rack, and the rack is provided with an unwinding roller, a conveying roller, a longitudinal cutting assembly, a transverse cutting assembly and a static electricity removing device. The unwinding roller is used for winding a to-be-cut magic tape; the conveying roller is connected with a power source, can rotate in the circumferential direction and is used for conveying the hook-and-loop fastener unwound from the unwinding roller. The longitudinal cutting assembly is used for longitudinally cutting the magic tape into a plurality of strips; the transverse cutting assembly is arranged behind the longitudinal cutting assembly and used for cutting the multiple hook-and-loop fasteners into sections at the same time. The static electricity removing device is arranged between the transverse cutting assembly and the longitudinal cutting assembly and used for removing static electricity of the hook-and-loop fastener. The static electricity eliminating device is used for eliminating static electricity in the hook-and-loop fastener, and distortion and curling of the hook-and-loop fastener after cutting are reduced.

The utility model discloses a peanut sheller which comprises a rack, a screening device, an attached vibrator, a rolling device, a power transmission mechanism and a power source, the rack is made of aluminum profiles, the screening device is fixed to the lower portion in the rack, and the attached vibrator is fixed to one side of the screening device; a rolling device is fixed to the upper portion in the machine frame, one side of a rolling rod of the rolling device is connected with an output shaft of a power transmission mechanism, and an input shaft of the power transmission mechanism is connected with an output shaft of a power source. The attached vibrator and the power source are both externally connected with a power supply; the screening device comprises a screening frame, a first-layer screening partition plate, a second-layer screening partition plate, a third-layer screening partition plate and a first L-shaped fixing piece. Peanut shells can be broken through the rolling device, the screening device is driven by the vibrator to vibrate continuously, peanut screening is achieved, and efficiency is high.

The invention belongs to the field of environment and food pollution detection, and relates to a microcystic toxin-LR (MC-LR) bimodal detection method based on regulation and control of MIP-Cu at CDs laccase activity. Copper chloride dihydrate, citric acid and ethidene diamine are used as synthetic substrates, a fluorescent nano-enzyme with laccase-like activity is synthesized in one step through a hydrothermal method, and the MC-LR can be specifically recognized and the laccase-like activity of MIP-Cu at CDs can be regulated and controlled through wrapping of a molecular imprinting method, so that a colorimetric and fluorescent dual-mode rapid MC-LR determination method is established. The method is short in detection time, high in sensitivity and low in cost. Built-in cross reference correction is provided by dual modes, so that the MC-LR detection reliability and accuracy in a complex environment sample are greatly improved, and false positive output of a detection result is avoided.

The utility model provides a catenary tunnel embedded chute detection device which comprises a moving plate, moving wheels are arranged at the four corners of the bottom of the moving plate, an adjusting platform is arranged on the moving plate, a detection plate is installed above the adjusting platform, two sets of laser devices are installed on the detection plate in a sliding mode, and the two sets of laser devices are arranged on the adjusting platform. A graduated scale is arranged on the side face of the detection plate, a reserved hole used for containing a gradienter is formed in the upper surface of the detection plate, and an adjusting assembly used for adjusting the detection plate to be horizontal is arranged between the adjusting platform and the movable plate. The device is simple in structure and reasonable in design, can effectively measure the width of the pre-embedded chute, greatly improves the detection efficiency of the overhead line system reserved tunnel chute, simplifies the on-site detection and adjustment process, and enables the detection and adjustment process to be accurate, simple and efficient.

The embodiment of the invention provides a vacuum compression bed and a compression storage method. The vacuum compression bed comprises a horizontally-placed cuboid bed body and a bed head connected to one end of the bed body. The bed body and the bed head are made of foamed sponge; the size can be compressed before transportation, and transportation is convenient.

The utility model relates to the technical field of folders, and discloses a secondary locking vertical pipe iron folder which comprises a folder lower seat, a folder upper seat and a folding seat locking structure, one end of the folder lower seat is hinged to one end of the folder upper seat through a folder connecting shaft, and the other end of the folder upper seat is hinged to the folding seat locking structure. The folding seat locking structure is arranged at the other end of the folder lower seat and the other end of the folder upper seat, the folder lower seat and the folder upper seat are locked through the folding seat locking structure, the folder upper seat is connected with a secondary safety fastener, and one side of the secondary safety fastener is connected with a secondary safety buckle spring. According to the secondary locking vertical pipe iron folder, the situation that an iron vertical pipe folder at the market end is not attractive can be optimized, a safety buckle double-buckle mode is adopted, the folding safety performance is improved, a secondary safety buckle self-locking device is additionally arranged, folding of the folder is changed into self-locking, and when a primary safety buckle fails, the secondary safety buckle is still effective, and personal safety is guaranteed.

The invention discloses an identity verification system and method based on biological feature recognition, and belongs to the technical field of biological recognition and artificial intelligence. The system comprises a registration identity authentication SDK function module, a registration identity authentication background management module, a registration identity authentication interface service module, a registration approval system transformation module, a real name authentication information query module, an identity authentication information binding module, an identity authentication result information generation module and an application case query transformation module. The registration identity verification SDK function module is used for registration of a new user and login of a registered user; the registration identity verification background management module is used for managing user registration information and registration records; and the registration identity authentication interface service module is used for user identity authentication. According to the invention, whole-process flow management of business handling identity real-name authentication is established, one-event one-person one-authentication is realized, information of others is prevented from being illegally used, and authentication data is prevented from being forged.

The utility model discloses a kind of high-pressure hydraulic pump pressure maintaining structure, belong to hydraulic pump pressure maintaining technical field.The utility model includes the first valve block and the second valve block being connected with each other, the first valve block is equipped with pressure maintaining circuit inside, the second valve block is equipped with the intercepting component for carrying out on-off to pressure maintaining circuit;The intercepting component includes conversion head and driving rod;Wherein, the conversion head has a through flow-through cavity, and one end of the flow-through cavity is connected with pressure maintaining circuit;The circumferential of the conversion head is equipped with the pressure relief hole being communicated with flow-through cavity, and the hardness of this conversion head is greater than the hardness of first valve block;The end of the driving rod extends to flow-through cavity, for the on-off control of flow-through cavity.This utility model is transferred to the port place of flow-through cavity by the setting of conversion head, can the instantaneous high pressure received at pressure maintaining circuit port place;At this time, the material of conversion head can be optimized alone, and the material of entire valve block need not be optimized.

A multifunctional high-voltage integrated vacuum circuit breaker belongs to the technical field of vacuum circuit breakers for new energy Hua transformation and comprises a shell, an isolation knife, an integrated mechanism and a grounding knife, and the isolation knife, the integrated mechanism, the grounding knife, a solid-sealed vacuum arc-extinguishing chamber with a protection function, a reinforced CT and a flexible connector are arranged on the shell. The isolation switch, the grounding switch, the solid-sealed vacuum arc-extinguishing chamber and the reinforced CT are all connected with the integrated mechanism, the solid-sealed vacuum arc-extinguishing chamber is connected with the reinforced CT through flexible connection, and the reinforced CT is connected with the grounding switch. According to the utility model, the serious defect of the external isolation knife of the original circuit breaker is solved, the isolation knife is arranged on the circuit breaker shell, the vacuum arc-extinguishing chamber is arranged in the insulating material with protection, and the circuit breaker is integrally installed instead of being separated in the past, so that the space and the material are saved, the circuit breaker is safe and reliable, and accurate opening and service life are effectively ensured; problems of interlocking failure of the disconnecting switch, transportation damage of the arc extinguish chamber, equipment burning due to overvoltage and the like in the prior art are avoided.

The present application mainly relates to a kind of preparation of sulfur-rich amino acid protein CMd-copper nanoclusters and its detection mercury ion method, comprising: a) by prokaryotic expression obtains CMd protein, and the protein concentration of 5 mg / mL-25 mg / mL CMd protein solution is obtained by purification.b) CMd is reacted with reducing agent TCEP after opening protein disulfide bond.c) the protein solution after reduction is reacted with anhydrous copper sulfate, and preparation high fluorescence CMd-copper nanocluster.d) CMd-copper nanocluster is applied to detect heavy metal mercury ion.The application method can be synthesized under mild aqueous conditions by "one-step method" structure controllable, stable CMd-copper nanocluster, widens the raw material of copper nanocluster synthesized with protein as template, avoids the use of organic solvent and strong reducing agent, and reduces the cost and environmental burden brought by noble metal raw material, and also has higher selectivity to mercury ion.

The invention discloses a solar thermal collector driven adsorption refrigeration operation test system, comprising: a heat-driven adsorption refrigeration test device, a thermal stability maintenance effect inspection box and a stabilizing bracket. The heat-driven adsorption refrigeration test device consists of a heat sink, an evaporating tube, a heat conducting tube, a collector flexible connector, a solar thermal collector tube and a solar thermal collector tube tray. A heat dissipation tube is fixedly installed at the inner end of the heat sink, an adsorbent barrel is fixedly installed at the inner end of the heat dissipation barrel, and an adsorbent barrel rib is fixedly installed at the outer end of the adsorbent barrel. The solar thermal collector driven adsorption refrigeration operation test system can realize the performance parameter test of the solar thermal collector driven adsorption refrigeration system. Referring to the experimental results, the industrialization development of the adsorption refrigeration technology can be promoted by optimizing the structure and material of the adsorption bed, improving the heat and mass transfer performance, and improving the refrigeration efficiency of the system.

This invention discloses PtoNAC028 The gene is used to regulate the ratio of pectin monomers in poplar trees. The coding region of this gene has the nucleotide sequence shown in SEQ ID NO:1. This is achieved through overexpression or silencing of the gene in poplar trees. PtoNAC028 Genes capable of increasing or decreasing the proportion of lignin monomers in poplar provide key genes for the genetic improvement of poplar processing traits. This invention also discloses a method for cultivating poplars with a high lignin monomer ratio, through overexpression of [gene name missing] in poplar trees. PtoNAC028 The gene can significantly increase the proportion of lignin monomers in poplar trees, achieving targeted regulation of monomeric lignin metabolism, which helps to rapidly cultivate new poplar varieties with excellent wood properties and fast growth.

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a wiring terminal plug-in structure and a circuit breaker, and the wiring terminal plug-in structure comprises a static terminal and a moving terminal. The static terminal comprises a first shell and a wiring unit arranged in the first shell, two opposite sides of the first shell are respectively provided with a wiring port and a terminal socket, and the wiring unit is provided with an elastic wire clamping part and a contact cavity; the elastic wire clamping part is used for clamping an external lead passing through the wiring port and is in conductive contact with the external lead; the moving terminal can pass through the terminal jack and can be conductively plugged in the contact cavity. The wiring terminal plugging structure is of a two-section structure, so that the use space required by the wiring terminal plugging structure can be greatly reduced, the manufacturing process is simplified, and the production cost is reduced. The wiring unit of the static terminal can clamp the external lead on one hand and can be connected with the internal movable terminal on the other hand, the manufacturing process and required materials can be simplified, and the wiring efficiency can be improved in the mode that the wiring unit and the external lead are elastically clamped.

The invention discloses a mold for manufacturing blocking explosion-suppressing balls, the mold comprises a first seat plate, a second seat plate, a fixed mold mechanism, a movable mold mechanism, an ejection mechanism, a cooling mechanism, a filling mechanism, a limiting mechanism, a reset mechanism, an exhaust mechanism and a fixing mechanism; the fixed mold mechanism and the movable mold mechanism are arranged between the first seat plate and the second seat plate, the explosion-suppressing ball space for injection molding inside is a thin-wall skeleton structure, the ejection mechanism ejects the explosion-suppressing balls, and the reset mechanism is additionally provided with a sleeve with magnetorheological fluid, so as to actively control the displacement of the movable mold and reduce the influence of vibration on the injection-molded workpiece, solve the problems of complex structure of explosion-suppressing fillers, great manufacturing difficulty, low efficiency and high replacement rate, and achieve the advantages of smooth surface quality of the produced explosion-suppressing balls, eliminating shrinkage defects, thinner wall surface, small mass, small volume and stable output.

The invention provides a surgical defect wound infection nursing negative pressure dressing, and relates to the technical field of medical instruments. The surgical defect wound infection nursing negative pressure dressing comprises an oil yarn layer, an injector, a flushing pipe, a second multi-way pipe joint, a second branch pipe and a second side hole. A plurality of second branch pipes are arranged between the oil yarn layer and the wound surface, so that the syringe can discharge the cleaning liquid into the flushing pipe, and the cleaning liquid can be uniformly discharged into the second branch pipes through the second multi-way pipe joint; the cleaning liquid is uniformly sprayed to the wound surface and one surface, facing the wound surface, of the oil yarn layer through the second side holes in the second branch pipe, so that the wound surface is effectively flushed, necrotic tissues, germs and the like on the wound surface are thoroughly removed, necrotic tissue fragments and impurities adhered to the surface of the oil yarn layer can be flushed away, and the cleaning effect is good. The impurities are prevented from being attached to the oil yarn layer for a long time, so that the permeability of the oil yarn layer is influenced, and the drainage effect on the percolate is further influenced.

This utility model discloses an endoscope lens that can meet different viewing angle requirements while maintaining consistent lens elements. It includes a barrel, an objective lens fixedly mounted on one side of the inner wall of the barrel, an eyepiece fixedly mounted on the other side of the inner wall of the barrel, a first convex mirror fixedly mounted on the barrel on one side of the objective lens, and a concave mirror fixedly mounted on the barrel on one side of the first convex mirror. This utility model, an endoscope lens that can meet different viewing angle requirements while maintaining consistent lens elements, designs three lenses (160°, 135°, and 105°) as multiple structures of a single lens. It modifies some air gaps to meet different angle requirements, while simultaneously pursuing different depths of field and high resolution requirements. This simplifies materials, improves efficiency, and reduces costs. The use of the same lens for three lenses with different requirements reduces the number of lens types and increases the corresponding quantity, greatly improving lens processing efficiency and reducing costs.

The utility model discloses an asphalt mixture thermal regeneration cloth bag dust removal mechanism which comprises a cloth bag body, a lining ring is arranged on the surface of the inner side of the upper end of the cloth bag body, an upper cover is connected to the surface of the inner side of the lining ring through threads, an exhaust pipe is fixed to the surface of the inner side of the upper cover, and a net cylinder is fixed to the lower end of the exhaust pipe. The inner end of the net barrel is filled with an activated carbon filter cartridge, an outer ring is welded and fixed to the outer surface of the lower end of the net barrel, a convex cover is connected to the inner side surface of the outer ring through threads, an annular concave shell is fixedly connected to the outer surface of the net barrel, and a reciprocating air cylinder is fixed to the surface of an upper cover; a supporting plate is fixed to the end face of a pushing rod of the reciprocating air cylinder, dust can be cleaned, supporting can be achieved, wizened adhesion and blockage are avoided, a net cylinder is arranged for supporting air inflow, an annular concave shell is arranged outside the net cylinder, falling dust can be received, and material receiving and cleaning are facilitated.

The present invention relates to a cement pool cage culture device for cultivating crayfish broodstock, comprising at least four fixed rods, each of which is equipped with a bottom bracket, a receiving rod, the receiving rod being detachably mounted on the bottom bracket, a cage being mounted on the inner side of the receiving rod, the cage being fixed to the receiving rod via a line segment, and a protective structure, the protective structure being mounted on one side of the receiving rod and being used to prevent natural enemies from causing harm to the crayfish. In a large-scale breeding scenario, a single person can feed the crayfish in the entire pond at the same time, or when the feed stored inside the supply structure is sufficient, the crayfish can be automatically fed without human assistance. The device has a very high degree of automation, requires simple materials, has a particularly low manufacturing cost, and is very practical.

The present invention proposes a wavelength division multiplexing optical component based on arrayed waveguide grating technology, including a laser collimation subcomponent, an arrayed waveguide grating subcomponent, and an output optical fiber; the laser collimation subcomponent is formed by solidifying a laser chip and a laser collimating lens array, and the arrayed waveguide grating subcomponent is formed by solidifying an arrayed waveguide grating collimating lens array, an arrayed waveguide grating, and an arrayed waveguide grating coupled optical fiber lens array. The present invention integrates two discrete modules in a traditional wavelength division multiplexing optical component, thereby meeting the development demand for further miniaturization of the module, while streamlining materials and reducing costs.