116results about How to "Avoid inhalation" patented technology

The invention provides a composite connection method for thick titanium alloy plates, and belongs to the technical field of metal material welding and additive manufacturing. According to the technical scheme, the method comprises the steps that symmetrical X-shaped grooves are machined in thick plate titanium alloy workpieces to be connected; a laser-electric arc hybrid welding system is adopted for conducting double-face bottoming welding on the X-shaped groove, so that a double-face bottoming welding seam is formed; and a powder feeding type laser cladding system is adopted, and multi-layer and multi-channel additive filling is conducted in the X-shaped groove above the double-face bottoming welding seam. According to the method, efficient laser-electric arc composite bottoming and low-heat-input laser cladding additive filling are separated, high-quality penetration of the root is guaranteed firstly, then welding deformation and residual stress are remarkably reduced through low-heat-input filling, the microstructure of a filling area is optimized, and therefore a welded joint with excellent comprehensive performance is obtained.

This invention relates to the field of die-casting mold technology and discloses a die-casting mold for aluminum alloy forming, comprising a moving mold and a fixed mold, and further comprising: a pre-vacuuming mechanism, fixedly installed inside the fixed mold, the pre-vacuuming mechanism including a sealing element and a pre-vacuuming channel communicating with the sealing element, and a slot corresponding to the sealing element on the moving mold; a vacuuming mechanism, including a fixed mold vacuuming component fixed on the fixed mold and a moving mold vacuuming component fixed on the moving mold; and a feeding assembly, fixedly installed on the side of the fixed mold away from the moving mold. This die-casting mold for aluminum alloy forming, by setting the pre-vacuuming mechanism and the vacuuming mechanism, initiates pre-vacuuming during the mold closing process, utilizing the dynamic stage of the gradually decreasing cavity volume to expel most of the gas in advance; a second vacuuming is performed after mold closing to further extract residual gas. The synergistic effect of the two vacuuming processes effectively reduces the initial gas content in the cavity.

This invention provides a solution filling device for a lithium bromide hot and cold water unit, including a solution tank, a self-priming pump, a self-priming pump outlet pipe, a control valve inlet pipe, and a control valve. Both the self-priming pump and the control valve are installed on the top of the solution tank. The inlet of the self-priming pump is connected to the solution tank, and the self-priming pump extends into the interior of the solution tank through the outlet pipe, thereby drawing the solution from the solution tank into the solution tank. The control valve extends into the interior of the solution tank through the inlet pipe, and its outlet is connected to the lithium bromide unit. Opening the control valve transfers the solution from the solution tank into the lithium bromide unit. This design avoids the intake of air, and even if air is drawn in, it can escape through the vent at the top. The degassed solution automatically enters the space on the other side from the upper part of the partition and then enters the lithium bromide unit through the control valve inlet pipe, thus preventing the introduction of air and improving filling efficiency.

The utility model provides a kind of carbon emission detection device for logging with warning function, it is related to logging gas detection technical field, including carbon emission detector, the right side of carbon emission detector is provided with processing mechanism;Processing mechanism includes heat insulation cylinder, heat insulation cylinder is set to the right side of carbon emission detector, the inner wall of heat insulation cylinder is fixedly connected with heating cylinder, the left side of heating cylinder is fixedly communicated with exhaust pipe, the left end of exhaust pipe is fixedly communicated with the gas outlet end of carbon emission detector, the outer surface of heating cylinder is equipped with electric heating wire, the outer surface of heat insulation cylinder is fixedly communicated with gas supply pipe.This carbon emission detection device for logging with warning function, after logging carbon emission detection device detects harmful gas and alarms, can carry out harmless treatment to harmful gas, prevent harmful gas from being directly discharged to pollute environment, further prevent staff from inhaling harmful gas, improve the effect of logging carbon emission detection device warning safety protection measures.

The utility model belongs to the technical field of bending machines, and particularly relates to an actuating mechanism of a bending machine, which comprises an operation table and a negative pressure pipe, a bending table is arranged at the top of the operation table, a bending machine body is arranged above the bending table, an actuating piece is arranged at the top of the bending machine body, and a bending mechanism is arranged on the negative pressure pipe. A bending pressing block is arranged on the bending machine body, the negative pressure pipe is arranged on the front side wall of the bending pressing block, and an adsorption cavity is formed in the bending pressing block. In the bending machine, an automatic execution material taking mechanism is additionally arranged on the bending machine, so that the automation degree of equipment is greatly improved, automatic material taking after antenna auxiliary materials are bent is achieved, and the working efficiency is improved. Therefore, the automatic processing efficiency of the equipment is improved.

The utility model discloses a portable soil emanometer gas filtering and drying device, which comprises a top cap, an adsorption interlayer, a fixed pipe, a single-mouth cup, a bearing seat, a support rod, a triangular nail and allochroic silicagel, the adsorption interlayer is arranged in the fixed pipe, the allochroic silicagel is arranged on the adsorption interlayer, the top cap is fixed at the upper end of the fixed pipe, and the single-mouth cup is fixed on the top cap. The single-opening cup is arranged on the bearing seat, the lower end of the fixed pipe is fixed on the bearing seat, and the supporting rod connects the bearing seat with the triangular nail. The device is convenient to carry, simple in structure and convenient to assemble, meets various working environments, effectively reduces the risk of instrument damage, and improves the working efficiency.

The utility model belongs to the field of electrical equipment control operation cabinets, particularly relates to an electrical equipment automatic control operation cabinet based on a PLC, and aims to solve the problems that dust and impurities fall down and are easily sucked into an operation cabinet to pollute the operation cabinet due to the fact that an existing filter screen is vibrated during replacement and disassembly. Comprising an operation cabinet body, a mounting opening is formed in the top of the operation cabinet body, a cooling fan is fixedly mounted in the mounting opening, and air inlet mechanisms are arranged on the two sides of the operation cabinet body; the air inlet mechanism comprises an air pipe, the air pipe penetrates through one side of the operation cabinet body in a sliding mode, and one end of the air pipe is fixedly connected with a back plate. Dust falling from the filter screen is prevented from being sucked into the operation cabinet body when the filter screen is replaced, the cleanliness of the interior of the operation cabinet body when the filter screen is replaced is improved, and the service life of the operation cabinet body is prolonged. And meanwhile, the limiting frame can be blocked through the anti-disassembly plate, the situation that the filter screen is replaced when the air pipe is not pulled out is prevented, and non-standard operation is avoided.

The present disclosure relates to the technical field of geotechnical engineering. An embodiment of the present disclosure provides a geotechnical engineering drilling device, including a base platform. A support is fixedly installed on the top of the base platform. A moving plate is movably installed inside the support. A first motor is fixedly installed on the top of the moving plate. A drill pipe is rotatably installed at the bottom of the moving plate. In the present utility model, through the rotation of the rotating plate, the reinforcement pile is drilled into the soil. Then, through the rotation of the rotating rod, the casing is displaced downward. The downward displacement of the casing will squeeze the reinforcement block into the soil through the slope surface of the reinforcement block, completing secondary reinforcement. Compared with traditional devices, this device can fix the base platform through the reinforcement pile and can also increase the contact area between the reinforcement pile and the soil through four groups of reinforcement blocks. Through the above technical solution, the technical problems of poor fixing effect and easy deviation of the drill pipe in the prior art are solved.

The utility model relates to the field of welding bead cleaning instrument, and concretely relates to a smoke suction sleeve structure applied to a welding bead cleaning brush, which is characterized by comprising an outer tube and an inner tube, wherein the inner hole of the inner tube is a through liquid hole for embedding the brush hair, the inner tube is arranged in the outer tube, and an inhalation gap arranged around the inner tube is reserved between the outer tube and the inner tube. The overall structure of the utility model is very simple and reliable, which can not only meet the normal welding bead cleaning demand, but also achieve very comprehensive and effective smoke suction effect, can quickly and effectively suck away the smoke to avoid the workers from inhaling, and can better protect the health of the workers.

The utility model discloses a sorting device for wheat processing, including sorting box, feed hopper, upper guide plate, lower guide plate, sorting fan, dust collection mechanism and screening mechanism, through setting up upper guide plate and lower guide plate, can guide the wheat that feed hopper falls down and disperses and slides, make the wheat distribution more evenly in the sorting process, make subsequent sorting fan and dust collection mechanism better play the role, improve the overall nature and accuracy of sorting and impurity removal, two groups of symmetrical sorting fan and dust collection mechanism intercoordination, the airflow of sorting fan blows the wheat that disperses and slides and makes the impurity and wheat separate, and dust collection mechanism then in time will separate out the impurity and inhale, the design of dust collection cover, dust collection shell and protective grating has effectively expanded the dust collection range, and the protective grating can prevent the wheat from being inhaled, ensures the smooth progress of the dust collection process, and greatly improves the efficiency of sorting and impurity removal.

The invention discloses a preparation method of an Al-RE intermediate alloy based on an alloy opposite doping method, which comprises the following steps: firstly, industrial pure aluminum Al and mother alloy Al-90RE are taken as raw materials, the raw materials are dried according to a mass ratio meeting the requirement of Al-(10-50) RE, then, the raw materials are melted by adopting a two-stage variable-temperature melting method to obtain an Al-RE melt, then, the Al-(10-50) RE melt is refined, and meanwhile, the Al-RE intermediate alloy is prepared by adopting an alloy opposite doping method. The steel ingot mold is preheated, and finally, the refined Al-RE melt is poured into the preheated steel ingot mold to be cooled, so that an Al-RE intermediate alloy ingot based on the alloy opposite doping method is obtained; rE is one of La, Ce or La + Ce alloy. The obtained Al-RE intermediate alloy is compact in metallographic structure and less in inclusion; in addition, the yield is greater than 90.0%.

The utility model discloses a drainage assembly and heat pump equipment, the drainage assembly comprises a drainage pipe and a fixed seat, the drainage pipe comprises a water inlet section, a bent pipe section and a water outlet section which are connected in sequence, the opening of the bent part of the bent pipe section is arranged upwards, and the water inlet section and the water outlet section are located on the upper side of the bent pipe section; the fixing base comprises a first fixing piece and a second fixing piece which are connected with each other, a first through groove and a second through groove are defined between the first fixing piece and the second fixing piece, the water inlet section penetrates through the first through groove, and the water outlet section penetrates through the second through groove. According to the drainage assembly, suck-back can be prevented, drainage noise is effectively reduced, and the user experience degree is improved.

The utility model relates to the technical field of water heating construction, specifically is a kind of slotting device for dustproof building water heating construction, including bottom plate and the cutting assembly of being connected on bottom plate, filtering component;The cutting assembly includes the slotting saw blade in the top of bottom plate and the lift adjusting mechanism connected with it, and the slotting saw blade is connected first motor;The filtering component is located in the both sides of slotting saw blade, including dust removal mechanism in the inner chamber of box and the fan being communicated with box interior. The utility model is inhaled into the box by the structural design of fan, gas pipe and intercommunication frame, the dust generated by slotting is discharged after being filtered by the structural design of first filter screen, second filter screen, second motor, driving wheel, driven wheel, first rotary shaft, second rotary shaft and eccentric wheel, avoid dust being inhaled into body by staff, knock simultaneously to first filter screen, second filter screen, avoid first filter screen, second filter screen blockage.

The application discloses a drilling device with waste gas collecting function for coal mine exploration and relates to the technical field of coal mine drilling. The drilling device comprises a sliding frame, the sliding frame is rotationally connected with a rotating sleeve, the lower portion of the rotating sleeve is slidably connected with a first spline rod, the lower end of the first spline rod is fixedly connected with a drill cylinder, the lower portion of the first spline rod is fixedly connected with a first fixed plate, the first spline rod is provided with an elastic member, the two ends of the elastic member are fixedly connected with the rotating sleeve and the first fixed plate respectively, the sliding frame is fixedly connected with a support frame, the support frame is fixedly connected with a first driving motor, and the output shaft of the first driving motor is fixedly connected with a gear. The first elastic member is used for monitoring the extrusion force between the drill cylinder and the bottom layer, so that the transmission ratio between the third extrusion plate and the fourth extrusion plate and the second extrusion plate and the first extrusion plate is changed, the moving speed of the sliding frame is reduced, the drill cylinder is prevented from moving downwards at a speed that is too fast, the extrusion force between the drill cylinder and the bottom layer is prevented from increasing continuously, and the drill cylinder is prevented from being stuck in the bottom layer.

The utility model discloses a cable sheath extrusion equipment, including the processing platform, the top right -hand member of processing platform is fixedly installed with the feed pipe, the inside fixed mounting of feed pipe has the screen, the top left -hand member of processing platform is fixedly installed with L type board, one side fixed mounting of L type board has servo motor, and the output of servo motor is fixedly installed with small belt pulley, and one side of small belt pulley is connected with large belt pulley through belt drive, and the top one side edge of large belt pulley is fixedly installed with the scraper, and the other end of scraper extends to the inside of feed pipe and is contacted with the surface of screen connection, and large belt pulley is rotatably connected with the top right -hand member of processing platform. The utility model servo motor drives the end of scraper to slide on the surface of screen smoothly, effectively controlled the speed of screen blanking, ensured the uniformity of blanking, and simultaneously, it also prevented the blockage of screen surface to the stability of cable sheath extrusion process, ensured the processing progress.

The utility model discloses a separation and preparation device for lucid ganoderma liquid. The separation and preparation device comprises a treatment tank, a storage tank, a filling hopper, a first air guide pipe and an air exhaust fan, according to the separation and preparation device for the lucid ganoderma liquid, a filling hopper is fixedly installed on the top face of a storage tank, the storage tank communicates with a treatment tank through a communicating pipe, a first filtering layer, a second filtering layer and a third filtering layer are sequentially installed on the inner side of the top of the treatment tank, and an exhaust pipe is fixedly connected to the position, corresponding to the lower portion of the third filtering layer, of the side wall of the treatment tank in an inclined penetrating mode; the end of the exhaust pipe is fixedly connected with a vertical suction-preventing pipe, the top end of the suction-preventing pipe is fixedly connected with a first air guide pipe, the first air guide pipe is fixedly connected to the air inlet end of the exhaust fan, air is fed through the filling hopper, lucid ganoderma liquid soaked in the storage tank can enter the treatment tank through the communicating pipe, and the lucid ganoderma liquid entering the treatment tank is filtered; during filtering, suction can be performed through the air exhaust fan, so that a suction filtration effect is achieved, and the filtering speed is effectively increased.

The application discloses a CO2 storage carrier, a preparation method and a device, which comprise the following components in percentage by mass: quartz: 30.10-40.45%, borax: 8.75-14.3%, calcium oxide: 5.13-7.20%, magnesium oxide: 5.50-7.52%, sodium carbonate: 1.87-3.47%, sodium sulfate: 0.12-0.53%, sodium phosphate: 0.23-0.82%, a stable dispersing agent: 0.06-0.33%, a surfactant: 0.02-0.13%, and water: 35-45%. The application comprises the following steps in the preparation: (1) preparing a slurry; (2) preparing a CO2 storage carrier precursor; and (3) preparing the CO2 storage carrier. The CO2 storage carrier provided by the application can wrap carbon dioxide gas inside, can realize carbon storage, and can help realize the vision of carbon neutrality as soon as possible.

The utility model discloses a double-station spraying and drying integrated device with a purification function, and relates to the technical field of sealing ring machining equipment, the device comprises a machine body, a control switch is installed at the top of the machine body, a baffle is fixedly installed at the top of the machine body and located outside the control switch, two sliding grooves are formed in the machine body, and the two sliding grooves are communicated with the control switch. A first spraying frame and a second spraying frame are slidably connected into the machine body through sliding grooves, an adjusting mechanism is arranged on one side of the machine body, and spraying mechanisms are symmetrically arranged on the other side of the machine body. According to the sealing strip spraying device, after the sealing strip outside the first spraying frame is sprayed, the adjusting mechanism works to enable the first spraying frame to slide upwards and enable the second spraying frame to slide downwards, the drying mechanism works to dry the sealing strip outside the first spraying frame, then the sealing strip is installed outside the second spraying frame, and then spraying is conducted; and the machining efficiency of the sealing strip is improved.

A machine case sheet metal part machining and grinding device relates to the technical field of metal part machining and comprises a bearing plate, supporting feet, a bottom plate, fixing frames, a sliding support, a grinding machine and a dust collecting device, the supporting feet are distributed on the lower end face of the bearing plate, the bottom plate is arranged between the supporting feet, the fixing frames are arranged at the two ends of the bearing plate, and the two ends of a metal plate are fixed to the upper end face of the bearing plate through the fixing frames. Transversely-arranged guide rails are symmetrically arranged on the two sides of the bearing plate, sliding blocks are arranged on the two guide rails, a sliding support is arranged on the two sliding blocks, the grinding machine is installed on the sliding support, two flow guide grooves are symmetrically formed in the two sides of the bearing plate, and dust collecting devices are arranged on the two flow guide grooves; the fixing frame is arranged on the bearing plate, so that the two ends of a metal plate can be conveniently fixed, the plate is guaranteed, and the polishing effect is improved; and by arranging the sliding support, the grinding machine can move along the bearing plate conveniently, operation of workers is facilitated, and by arranging the dust collecting device, dust and metal particles generated during mobile phone grinding are prevented from being sucked by the workers conveniently.

The utility model discloses a seedling pool drainage seedling protection device, include: flow guide cylinder, the bottom fixedly connected with the blocking cylinder of flow guide cylinder, the inside of blocking cylinder is provided with blocking subassembly, and blocking subassembly is used for blocking the seedling in seedling pool, a plurality of extension seat, a plurality of extension seat even fixedly connected in the outside of blocking cylinder, the middle part of each extension seat is slidably connected with the support rod, and the top of each support rod is fixedly connected with the linkage plate, and the linkage plate between fixedly connected with linkage ring, the lock plate of cooperation, the lock plate fixedly connected in the outside of flow guide cylinder, and the outside of linkage ring is equipped with locking assembly, and locking assembly is used for the positioning of support rod adjustment with the lock plate cooperation and forms, the utility model relates to aquaculture technical field, the utility model discloses through the structural cooperation of support rod, lock plate and locking assembly, can when discharging, the liquid balance of seedling pool is controlled conveniently, so that the pool bottom temperature keeps stable, avoids the death due to temperature change.

This utility model discloses an anti-bad breath mask, including a mask body. The mask body has an inner layer near the face that mates with the mouth. The top of the inner layer is located between the nose and the upper lip. A fixing part is provided on the top of the inner layer to mate with the mask body. Several air-guiding grooves are provided on the inner layer near the face that mate with the mouth. These air-guiding grooves extend from the middle of the inner layer to both ends. When worn, the two ends of the inner layer are respectively in contact with the cheeks. By setting the inner layer, the nose and mouth are placed in two separate spaces. Furthermore, to facilitate the expulsion of exhaled air, air-guiding grooves are provided on the inner layer. After exhaling through the mouth, the air in the oral cavity can be discharged from both ends of the inner layer through the air-guiding grooves. This eliminates the need for filtration and effectively prevents exhaled air from being re-inhaled through the nose even during prolonged wear.

The application discloses a kind of high-purity rare earth weathering bridge steel manufacturing method, comprising the following steps: S1, preparing raw materials;S2, impurity analysis and preparation;S3, vacuum induction furnace initial refining N;S4, vacuum induction furnace first material and refining;S5, vacuum induction furnace second material and charging adjustment;S6, vacuum induction furnace temperature adjustment and Ce;S7, cooling to form alloy ingot.The application uses vacuum electromagnetic induction melting process, improves alloy purity through high-purity raw materials and reasonable preparation process and process parameter control, and adds rare earth elements, and then significantly improves the strength, tensile and weathering performance of bridge steel.

The utility model relates to the technical field of desulfurized gypsum powder, in particular to an intermediate bin device for producing desulfurized gypsum powder, which comprises a support column, a feeding hopper fixedly connected to one side wall of the support column, a first driving motor fixedly connected to one side wall of the feeding hopper, a grinding wheel rotatably connected to the inside of the feeding hopper, and a first transport frame arranged on the lower surface of the feeding hopper. Through the arrangement of a feeding hopper, a speed regulation belt conveyor, a belt conveyor, an iron remover, a middle bin and a belt metering scale, the middle bin with the volume weight of 5 tons is arranged at the front end of the belt metering scale, weighing sensors are installed on fulcrums of four corners, when the weight of the middle bin is smaller than 0.5 ton, the belt conveyor is sequentially started in an interlocking mode, and the belt conveyor conveys raw materials into the middle bin; and when the weight of the intermediate bin is greater than 4.5 tons, the belt conveyor and the belt conveyor are sequentially stopped in an interlocking manner, so that the intermediate bin is used for storing a certain amount of raw materials to keep continuous operation time of desulfurization gypsum powder production, and the belt conveyor and the belt conveyor motor are stopped, so that the electric energy consumption can be reduced.

This utility model belongs to the technical field of vehicle external circulation systems, and discloses an external circulation air duct module and a vehicle. The external circulation air duct module includes an air duct shell and a guide body. A through-ventilation duct is provided in the air duct shell, with one end opening as the air duct inlet. The guide body is disposed at the air duct inlet of the through-ventilation duct and connected to the top wall of the air duct. The guide body is provided with a guide groove, the opening of which faces away from the air duct shell. The guide groove extends at least partially along the extension direction of the top edge of the air duct inlet and is provided with an outlet. The vehicle includes the above-mentioned external circulation air duct module. In this utility model, by providing a guide body with a guide groove at the air duct inlet of the air duct shell, rainwater and other liquids are prevented from being directly sucked into the air conditioning unit by the air conditioner.

The utility model discloses a powder collection device of powder coating powder outlet, which aims to solve the technical problem that the existing laboratory sample printing small capacity high speed mixer lacks a dustproof mechanism in the powder collection process of the powder outlet, and the dust of the powder coating may be inhaled by the human body, which may cause respiratory tract irritation or long-term lung disease. The utility model discloses a high speed mixer, a mixing barrel arranged on the top of the high speed mixer, a lower drive motor group fixedly connected to the center of the bottom surface of the mixing barrel, a hinged barrel cover arranged on the edge of the top of the mixing barrel, a discharge channel fixedly arranged on the edge of the bottom surface of the mixing barrel, a manual discharge door fixedly arranged on the inlet of the discharge channel and a receiving barrel. The discharge channel comprises a discharge port. The discharge port is detachably sleeved with a first dustproof cloth and a second dustproof cloth which are through from top to bottom. The first dustproof cloth is located outside the second dustproof cloth. The first dustproof cloth is circumferentially arrayed with a plurality of deformable metal strips along the vertical direction.

The application discloses a solid preparation processing vacuum granulator, and relates to the field of solid preparation processing, which comprises a supporting frame, and a granulating cabin is arranged on one side of the top of the supporting frame. Through the action of the screening mechanism, the finished granules can be screened, and the excess part at the edge of the granules is removed. After the finished granules are poured into the screening roller, the screening roller is controlled to rotate. At this time, under the action of the plurality of limiting wheels, the stability of the screening roller is ensured when the screening roller rotates and rolls. The finished granules are driven to rotate in the screening roller, and the granules are always located at the bottom of the inner cavity of the screening roller. The granules collide with each other, and the granule waste edges are removed. Since the screening roller is placed in an inclined manner, finally, under the action of the flow guide plate, the granules on the outer wall of the screening roller are guided out of the device. The granule waste edges are removed, the cleanliness of the granules is improved, and the granules can be directly used in subsequent processing.

The utility model relates to an air draft system of a frying workshop, which belongs to the technical field of air treatment in the food processing industry and comprises a frying workshop body. The oil fume pretreatment device has the advantages that oil fume in the oil frying workshop body is sucked into the pretreatment tank through the exhaust fan, at the moment, large oil fume particles can be preliminarily removed through the cyclone separator, heat is taken away through cold water in the water pipe so as to reduce the oil fume temperature, and after the oil fume reaches the position of the main filter box, the oil fume can be recycled. The main filter box adopts a composite multi-layer filter structure and can be respectively responsible for capturing particulate matters with different particle sizes under the filtration of a primary filter layer, an activated carbon adsorption layer and an HEPA (High Efficiency Particulate Air) high-efficiency filter layer so as to realize deep purification and further improve the oil fume filter effect, and finally clean air is discharged through the tail end of an exhaust gas discharge pipe, so that the oil fume purification effect is improved. By means of the structure, consumption of water resources is reduced, the oil fume treatment capacity is high, and secondary pollution is not prone to being generated.

This utility model relates to the field of water quality sampling technology. It discloses an automated water quality sampling device, comprising a water sampler body, a cable reel mechanism, a support ring, and a conical filter assembly. The water sampler body has a water inlet at its bottom and is equipped with conventional water intake mechanisms such as baffles inside. The support ring is detachably installed at the bottom of the water sampler body using fixing bolts. This structural design facilitates disassembly, cleaning, or replacement of filter assemblies of different specifications. By incorporating a sliding conical filter assembly at the bottom of the water sampler body, this utility model effectively intercepts leaves, plastic fragments, and other floating debris on the water surface during submersion and water intake. This design prevents debris from being sucked into the internal cavity, physically eliminating the risk of debris jamming the internal baffle, causing seal failure, and leakage. This significantly improves the accuracy of sampling data and the reliability of equipment operation.

The invention provides a preparation method of a pure-spinning polylactic acid fiber functional bedding, and belongs to the technical field of textile, the polylactic acid fiber functional bedding comprises a fabric and / or a filler, and the fabric and the filler are both made of polylactic acid fibers. The prepared polylactic acid bedding is completely prepared from 100% polylactic acid fibers, is free of sensitization, skin-friendly, antibacterial, free of peculiar smell, warm-keeping and breathable, avoids potential pathogenic hazards caused by the fact that microfibers are inhaled into a human body during sleeping, is flame-retardant, less in smoke, non-toxic and extinguished after being away from fire, and has a good application prospect. And moreover, the green and environment-friendly property that 100% of all-polylactic acid fibers can be recycled and reused is realized.