56 results about "Internal Powder" patented technology

The application discloses a container explosive non-opening box intelligent checking device based on ion mobility spectrometry, which comprises a connecting outer frame, a hydraulic cylinder is internally installed in the connecting outer frame, a hydraulic pump is connected to one end of the hydraulic cylinder, and a first piston is movably connected in the hydraulic cylinder. The ion mobility spectrometer and a separately designed collecting device are integrated into one equipment, a user carries the equipment by means of shoulder carrying, and a handle is equipped to facilitate holding. The air suction pipe is placed at the ventilation position of the container, the threaded rod and the first piston are driven to move transversely by hydraulic oil, the sample is pushed to the ion mobility spectrometer for analysis and detection, before the next sample test, the threaded rod is driven by the hydraulic oil to drive the polishing blade to rotate in the air suction pipe, the internal powder is scraped, the transverse thrust generated by the piston ring can extrude the gas in the air suction pipe, and thus the whole cleaning process is completed, the residues after each detection are greatly reduced, and the accuracy of the next extraction detection is avoided.

The invention provides an additive manufacturing powder supply device which structurally comprises a powder barrel, a guide block, an assembly block, a control chip, a mixing box and an output pipe, the powder barrel is perpendicular to the upper end position of the guide block, the edge of the guide block is fixedly connected with the assembly block, and the control chip is arranged below the guide block and located on the edge of the mixing box; after the powder barrel is improved, the position of the prompting structure is determined through the locking layer and the connecting layer on the barrel body, then the prompting structure enables powder to enter the material cavity to make contact with the stress disc through dismounting of the dismounting cover, then the weight of the stress disc rises to pull the spring and the prompting rod downwards, and on the contrary, after the powder is gradually output, the weight of the stress disc is gradually reduced; and finally, the prompting rod penetrates through the vertical groove of the covering disc and is exposed outside, so that the situation that the powder in the powder barrel is insufficient at present can be prompted, the actual use strength of the feeding device can be improved, and the situation that the subsequent product quality is affected due to insufficient proportion of partial powder is avoided.

The invention discloses a knife gate valve for powder, which belongs to the technical field of valves, is used for solving the problem that the knife gate valve in a powder conveying pipeline cannot be normally opened and closed due to accumulation of powder in a valve cover cavity, and comprises a valve body, a valve cover and a gate plate, and is also provided with a purging port, a purging port, a powder discharge port, an elliptical material collecting pocket and a flange observation port, according to the powder cleaning device, online or regular powder cleaning is achieved through structural improvement, the valve is prevented from being jammed, long-term stable operation of the valve is guaranteed, equipment faults and the maintenance cost are reduced, the service life of the valve is prolonged, the service life of the valve is prolonged, and the service life of the valve is prolonged. The device is suitable for powder on-off control of a powder conveying pipeline, and has remarkable economic benefits and popularization value.

The utility model discloses a forcible entry device for an enema filter bag. The forcible entry device is formed by assembling three parts, namely a first part which is used for piercing a filter bag and is provided with a cutting edge at the inner edge of the head part; one end of the first part is detachably connected with a telescopic second part which is used for hand-held force guiding; one end of the second part, which is far away from the side of the first part, is detachably connected with a third part for blocking ash slag; inserting from the opening of the filter bag to the root of the filter bag from top to bottom along the edge of the filter bag; the second part is properly rotated, the first part is forcibly lifted upwards, lifted up and down and moved after making contact with the filter bag, the second part is made to be close to the wall of the filter bag as much as possible, and internal accumulated powder can be removed by stirring the second part back and forth after the filter bag is punctured. That is to say, according to the scheme of the utility model, accumulated powder in the filter bag can be smoothly removed, so that the weight of the filter bag after enema is reduced, and the volume expansion amount of the filter bag is reduced.

The utility model relates to the technical field of automatic powder spraying, and discloses an automatic powder spraying device capable of adjusting powder spraying amount, which comprises a shell, a switch is mounted on the outer side of the shell, a valve core is slidably connected to the top of the shell, a transfer box is mounted on the side surface of the shell through an air pipe, and a storage box is mounted on the top of the transfer box. According to the automatic powder spraying device capable of adjusting the powder spraying amount, the switch on the outer side of the shell can directly cut off a gas source and is convenient to maintain and clean, the baffle is arranged at the bottom of the valve element, the spring is arranged at the top of the baffle, and the gas flow is adjusted to adjust the powder spraying amount by adjusting the compression amount of the spring and the opening-closing degree of the baffle; the first photoelectric particle sensor is used for monitoring the powder concentration in the transfer box, the adjusting plate in the ball valve can adjust the passing amount of powder, the second photoelectric particle sensor is used for detecting the powder concentration in the conveying pipeline, the powder spraying amount is convenient to adjust, and the infrared sensor is used for detecting the remaining amount of powder in the storage box, and timely adding is convenient.

The invention provides a preparation method of a powder metallurgy nut blank and the powder metallurgy nut blank. The method comprises the steps that an annular cavity is filled with at least three kinds of metal powder with different average particle sizes; wherein the first assembly body is sequentially divided into a large pressure area, a middle pressure area and a small pressure area in the pressing direction, the large pressure area is filled with metal powder with the maximum average particle size, the middle pressure area is filled with metal powder with the medium average particle size, and the small pressure area is filled with metal powder with the minimum average particle size. The technical problems that in the prior art, in the process of pressing a workpiece with the large height-diameter ratio characteristic, pressure can generate remarkable gradient attenuation in the transmission direction, consequently, density distribution of powder in a pressed blank is uneven, especially in an area or a structural core far away from a pressurizing face, the effective forming pressure of the powder is insufficient, the density is low, and the powder cannot be formed easily are solved. The density gradient is difficult to completely eliminate in subsequent sintering, so that the wear resistance and the overall service life of key friction areas of parts such as nuts are seriously influenced.

This utility model discloses a special type of refractory brick preparation device, relating to the field of refractory brick preparation technology. Specifically, it includes a main worktable, with a mold fixedly connected to the top center of the worktable. The mold is made of iron material. T-shaped support columns are fixedly connected to both sides of the top of the worktable. The T-shaped support columns are hollow, and an electric motor is fixedly connected to the top of the T-shaped support columns. A cam is fixedly connected to the bottom end of the output shaft of the electric motor. A fixed rod is fixedly connected to one side of the T-shaped support column. Before extruding the refractory brick, the powder raw material is poured into the mold. Through the cooperation of the push column and the cam, the impact column is driven to slide on the surface of the fixed rod. Due to the elasticity of the spring, the impact column can be quickly driven to impact the mold. The gaps in the powder raw material inside the mold are eliminated by vibration. Through the cooperation of the cam, spring and impact column, the gaps in the powder raw material inside the mold are eliminated by vibration, resulting in better quality refractory bricks.

This invention provides an optometry platform and method for inspecting the internal annular focusing lens assembly of an internal powder-feeding cladding nozzle. It includes a parallel light source device, an annular focusing lens assembly, and a photoelectric detection device arranged sequentially along the optical path. The photoelectric detection device is located on a defocus adjustment device, which allows adjustment of the defocus height to accommodate annular focusing lens assemblies with different focal lengths. A parallel light beam is obtained through the parallel light source device. The annular focusing lens assembly performs optical path conversion on the incident parallel light beam to obtain a hollow annular focused beam, which is projected onto the plane of the photoelectric detection device, resulting in a hollow annular focused light spot. The photoelectric detection device then performs photoelectric conversion to obtain an image of the light spot. By analyzing the different results of the focused light spot, quality defects of the annular focusing lens assembly under different conditions can be judged and inspected.

The application discloses a kind of quick preparation devices for electroless copper additive production, including the tank body of fixed connection in the top of support table, the top outer wall of the tank body is fixedly connected with three internal and is filled with different types of additive powder raw material cylinder, the top of the raw material cylinder is inserted with the sealing plug for ensuring internal material drying;The inside of the tank body is provided with the feeding assembly for the quantitative addition of raw material cylinder internal powder;The side of the feeding assembly is provided with the lifting assembly for adjusting the powder feeding amount, the circumferential outer wall of the tank body is fixedly connected with liquid inlet pipe, and the bottom of the tank body is fixedly connected with liquid outlet pipe.In the application, the adding time of different powders can be accurately controlled, the ratio confusion caused by the simultaneous addition of multiple powders is avoided, the quantitative accuracy is greatly improved compared with manual addition, and the influence of raw material ratio deviation on product performance is reduced.

The invention provides a vacuum getter and a preparation method and application thereof, and belongs to the technical field of getters. The vacuum getter comprises an outer-layer airtight barrier material and internal powder, wherein the outer-layer airtight barrier material comprises one of an organic barrier material, an organic-metal composite material and an organic-inorganic composite material; the internal powder comprises one or more of silicon dioxide powder, aluminum oxide powder, molecular sieve powder, graphite powder and montmorillonite powder. The vacuum getter can effectively avoid performance degradation of the getter in the VIP production and use process, does not need to be activated, has a good absorption effect on nitrogen, oxygen, water vapor, hydrogen, carbon dioxide and the like, and is safe and environmentally friendly.

The present application relates to a ceramic piece forming dry pressing method, comprising the following steps: step one, filling, adding part of the powder for making ceramic body to the lower die assembly in the dry pressing equipment, through auxiliary knocking, driving the limit pressing block to shrink through the cylinder, driving the hammering block to continuously stretch and shrink to knock the lower die assembly, the present application relates to the ceramic piece forming technical field. The ceramic piece forming dry pressing method can realize multiple knocking for powder homogenization through a single structure, and can also realize positioning locking and demolding effect, which can improve the processing efficiency while improving the product quality, and when knocking, the lower die assembly is not in a fixed state, can move slightly left and right, the acting force on the internal powder is larger, and the forming effect is better.

An auxiliary collection device for medicinal material grinding powder belongs to the technical field of medicinal material processing equipment; It includes a material collecting barrel, characterized in that: a feeding hopper is communicated with one side of the top of the material collecting barrel, a discharge port is formed in one side of the bottom of the material collecting barrel, and a hinged seat is arranged below the outer side of the discharge port corresponding to the material collecting barrel; The utility model discloses a feeding hopper for collecting powder is arranged on one side of the material collecting barrel, so that the powder on the top can be collected into the material collecting barrel, meanwhile, the cover plate on the top of the material collecting barrel is tightly connected with the material collecting barrel, so that the top of the material collecting barrel can be limited, internal powder is prevented from splashing, then a discharge port is arranged on one side of the material collecting barrel, both sides of the material collecting barrel are rotationally connected through hinged side plates, so that the internal powder can be poured out and collected through the mode of rotating the material collecting barrel.

The invention relates to the technical field of lamp inspection machines, in particular to a vibration type powder bottle agent lamp inspection machine which comprises a bottle feeding conveying belt, a feeding station conveying belt, a screw overturning mechanism, a vibration main disc, a visual camera, a discharging station conveying belt and a removing mechanism. The bottle feeding conveying belt is arranged at the left front part of the rack; the screw turnover mechanism is arranged at the tail end of the bottle feeding conveying belt; the feeding station conveying belt is arranged at the tail end of the screw turnover mechanism; the vibration main disc is in butt joint with the feeding station conveying belt and the discharging station conveying belt. A plurality of visual cameras are distributed on the periphery of the vibration main disc, the tail end of the feeding station conveying belt and the head end of the discharging station conveying belt; according to the automatic foreign matter detection device, the vibration main disc drives the powder bottle agent to continuously vibrate so that internal powder can roll over, the multi-directional vision camera is matched to capture foreign matter images, the problems that manual detection is low in efficiency and poor in accuracy are solved, and the automatic foreign matter detection device has the advantages that automatic high-speed detection is achieved, and the foreign matter recognition accuracy is improved.

The crushing device comprises a silo, the bottom of the silo is fixedly communicated with a recycling bin, a rectangular notch is formed in the lower portion of the left side of the silo, a clamping ring is horizontally erected at the bottom of the inner side of the rectangular notch, a plurality of piston type vibrators are symmetrically erected at the bottom of the clamping ring in a cross mode, and the piston type vibrators are arranged in the rectangular notch. A recycling filter cylinder is fixed to the top of the clamping ring in an up-and-down clamping mode, ring clamps are erected over the recycling filter cylinder in an up-and-down staggered mode, the bottoms of the inner sides of the ring clamps are fixedly connected with screens, and linear vibrators are assembled at the centers of the opposite sides of the ring clamps; the opposite sides of the linear vibrators stretch out of the silo and are fixedly embedded with the silo, a material crushing roller is erected over the ring clamp, material crushing is completed, meanwhile, shell and internal powder materials are rapidly and comprehensively separated and recycled, and the overall efficiency of battery recycling is improved.

This utility model discloses an isostatic pressing device for silicon nitride powder molding, including a conveyor. A sheathing tube is placed at the upper end of the conveyor, and a tube cover is installed at the upper end of the sheathing tube. A mounting plate is fixedly connected to one side wall of the conveyor. Two hydraulic cylinders are installed at the lower end of the mounting plate. Connecting plates are fixedly connected to the output ends of both hydraulic cylinders. A material hopper is fixedly connected to the opposite sides of the two connecting plates. A stirring shaft is rotatably connected to the top inner part of the material hopper. Multiple stirring rods are fixedly connected to the outer wall of the stirring shaft. A spiral blade is fixedly connected to the lower end of the stirring shaft. A through hole is opened at the upper end of the tube cover. The device incorporates a rotating disk, rack, and gears. Under the meshing transmission of the rack and gears, the sheathing tube can reciprocate, causing the powder inside to rearrange under the action of gravity and inertia, providing a uniform material base for subsequent isostatic pressing.

The utility model relates to the technical field of batching devices, and discloses an automatic powder batching device which comprises a shell, fixing plates are fixedly installed at the top and the bottom of the back face of the shell, a first motor is fixedly connected to the top of each fixing plate, and a threaded rod is fixedly connected to the other end of an output shaft of each first motor in a sleeved mode. And the other end of the threaded rod penetrates through the fixing plate, extends into the fixing plate and is in threaded sleeve connection with a moving block. Through the arrangement of the threaded rod, the moving block, the inclined rods, the connecting rod and the crushing plate, when the first motor starts to operate, the threaded rod rotates, the moving block vertically moves upwards under the limiting effect of the shell, the two inclined rods move, and due to the limiting effect of the shell, the crushing effect is greatly improved. And the two connecting rods drive the two crushing plates to horizontally and oppositely move in the hollow plate, so that the crushing effect on powder cakes in the hollow plate is achieved.

To provide a negative pressure suction structure, a loading device and a washing machine. [Solution] The present invention provides a dispenser and washing machine. The dispenser includes a dispenser case with an internal powder detergent chamber for dispensing powder detergent; a tank that uses the water flow from the automatic dispenser to flush the powder detergent from the powder detergent chamber and form a powder detergent solution; and a water supply channel equipped with a negative pressure suction mechanism that creates negative pressure using the flowing water. The negative pressure suction mechanism is connected to the tank and uses negative pressure to draw the powder detergent solution from the tank into the water supply channel. This configuration allows the water flowing through the separately installed water supply channel to extract the powder detergent solution to be dispensed, achieving the effect of automatically extracting and dispensing the powder detergent solution. This represents a significant technological advancement, allowing the powder detergent solution to be directly sprayed onto clothes in the washing machine tub ("Seika-sen") using a highly concentrated detergent solution.

The utility model relates to the technical field of bottled beverage production, disclose a solid -liquid separation formula bottle cap, including the main cover for screwing on the bottle mouth of bottle and the internal powder bin of vertical sliding connection in the main cover, the bin is at least two along the circumference direction distribution of main cover, the bottom opening of bin, the bottom of each bin is fixedly connected with the sealing film at the opening department, the bottom of main cover is fixedly connected with the blade of blade opening upward in the part corresponding to each bin, the top of each bin is fixedly connected with the clamping portion, each clamping portion is with main cover through seal connection, the top of each clamping portion is fixedly connected with the button on the top of main cover. The utility model changes the beverage taste, concentration or sweetness according to the consumer preference. Since the powder is located in the closed space in the bin, it will not contact with the outside air, and will not be damp or contaminated, and can be stored for a long time without adding preservatives, and the storage time is long.

The utility model discloses a stainless steel powder metallurgy filtering device which comprises an outer cylinder and a horizontal type filtering cylinder, pipelines are installed at the two ends of the horizontal type filtering cylinder, the pipelines are installed in an inner ring of a sealing bearing and extend outwards, a first sealing plug is arranged in the pipeline on one side, a second sealing plug is arranged in the pipeline on the other side, and the first sealing plug is connected with the second sealing plug. An air outlet pipe is mounted between the first sealing plug and the second sealing plug, a plurality of air outlet holes are formed in the upper half part of the air outlet pipe, a driving mechanism for driving the horizontal filter cartridge to rotate is mounted at one end of the outer barrel, and an air cylinder for driving the first sealing plug and the second sealing plug to move is mounted at the other end of the outer barrel. According to the utility model, the structure is simple, the internal powder can quickly pass through the filter holes in the lower half part of the horizontal filter cartridge through the vibration, gravity and rotation of the horizontal filter cartridge, and the air flow can be sprayed upwards through the air outlet pipe, so that the powder can pass through the filter holes in the upper half part of the filter cartridge; and the utilization rate and the filtering efficiency of the horizontal filter cartridge are improved.

The utility model relates to a stamping die with sealing structure aims at solving the technical problem that the powder is not filled unevenly in the current manual blanking after the depression groove, including roof and bottom plate, the bottom fixedly connected with the depression die of roof, the bottom sliding connection has the depression column of depression die, the top fixedly connected with the pressure die of bottom plate, and the top of pressure die is equipped with the depression groove that corresponds with the depression column, the top fixedly connected with the support box of pressure die, the both sides inner wall of support box all are equipped with the sliding slot, and the inside sliding connection has the moving plate of sliding slot. The utility model drives the moving plate to move the rotary brush above the depression groove through the motor, and the brush is made to rotate continuously when advancing and staying in combination gear and rack drive, effectively stirs the powder, ensures even filling, avoids the accumulation or the agglomeration, reduces the powder overflow simultaneously, promotes the pressing quality and the consistency, reduces the demand of manual intervention, thereby improves production efficiency and product yield.

The invention relates to the field of bloom flame cutting machines, in particular to an adjusting method for improving the precision of a cutting trolley of a bloom continuous casting machine, which comprises the following steps: A, the length of a powder nozzle is improved, and the length of the improved powder nozzle is 1.5-2.5 cm; b, the height of the ejector and the height of the cutting gun are adjusted, and centering installation of the ejector and the cutting gun is achieved through a nested positioning structure; c, the bending angle of a powder discharging device in the ejector is improved, the improved bending angle ranges from 15 degrees to 60 degrees, and forced purging operation is conducted on the used ejector; and D, transforming the layout of the energy medium pipeline system, and adjusting the mounting position of an electrical element at the same time. The method has the effect of reducing cutting deviation caused by energy fluctuation.

The utility model discloses cyclone recycling equipment capable of being movably cleaned. The cyclone recycling equipment comprises an outer side base frame, a powder collecting device, a movable cyclone recycling device, a movable supporting set, a lifting driving set and an extending supporting set. The powder collecting device is arranged on the upper side of the outer side base frame. The movable cyclone recovery device is arranged on the inner side of the outer side base frame and can be connected with the powder collecting device in a matched mode. The two movable supporting sets are arranged on the left side and the right side of the outer side base frame correspondingly and can synchronously move up and down in the vertical direction of the outer side base frame. The two lifting driving sets are arranged on the left side and the right side of the outer side base frame correspondingly, and the power output end of each lifting driving set is connected with the lower side of the corresponding movable supporting set. The extension support group is arranged on the front side of the outer side base frame, extends towards the front side and is used for supporting and guiding the movable cyclone recovery device to move out of the front side of the outer side base frame from the inner side of the outer side base frame; according to the powder recycling device, powder accumulated in the cyclone cylinder can be movably cleaned, and the powder recycling efficiency can be improved.

The utility model relates to the technical field of fireproof coating production, in particular to a powder pre-stirring device for fireproof coating production, which comprises a tank body, a feeding connecting pipe, a conveying pipe, a tank cover, a motor, a pressure relief dust removal cover, a scraping frame, a scraping plate and a mixing assembly, the feeding connecting pipe is fixedly arranged on the surface of the tank body, and the conveying pipe is connected with the end of the feeding connecting pipe. The tank cover is installed at the top of the tank body, the motor is installed at the top of the tank cover, the pressure relief dust removal cover is arranged at the top of the tank cover, and the scraping frame is arranged at the output end of the motor. The material scraping frame is driven to fall from the material falling grooves in different areas of the surface of the material mixing box, so that material mixing work is achieved, after material mixing is completed, a plug at the bottom of the material mixing box is opened, and internal powder can be completely discharged conveniently.

The invention relates to the technical field of powder brewing, and provides a powder discharging device and a milk brewing device. The powder discharging device comprises a powder storage bin and a quantitative powder discharging mechanism, the powder storage bin is provided with a bottom plate, the bottom plate is provided with powder falling holes, the quantitative powder discharging mechanism comprises a driving mechanism and a quantitative powder disc driven by the driving mechanism, the quantitative powder disc is provided with quantitative holes and is located below the bottom plate, and the quantitative powder discharging mechanism is arranged on the bottom plate. The quantitative powder disc has a sealing state and a rotating state under the action of the driving mechanism, the quantitative powder disc abuts against the bottom plate and seals the powder falling hole in the sealing state, and a gap is formed between the quantitative powder disc and the bottom plate in the rotating state. According to the powder discharging device, through the lifting and rotating functions of the driving mechanism, the quantitative powder disc can actively abut against the bottom plate of the powder storage bin to seal the powder falling hole and block the water vapor channel in the non-working state, the powder storage bin can be kept in the sealed state when powder discharging is not needed, and internal powder is prevented from being affected with damp and going bad.

The application provides a powder metallurgy nut blank preparation method and a powder metallurgy nut blank. The method comprises: filling at least three kinds of metal powders with different average particle sizes into an annular cavity; wherein a first assembly is sequentially divided into a large pressure area, a medium pressure area and a small pressure area along the pressing direction, and the large pressure area is filled with metal powder with the largest average particle size, the medium pressure area is filled with metal powder with medium average particle size, and the small pressure area is filled with metal powder with the smallest average particle size. The technical problem solved by the application is that in the process of pressing a workpiece with a large height-diameter ratio, the pressure along the transmission direction will appear significant gradient attenuation, resulting in uneven distribution of powder density in the compact, especially in the area far from the pressing surface or the core of the structure, the effective forming pressure of the powder is insufficient, and the density is low. The density gradient is difficult to completely eliminate in subsequent sintering, which seriously affects the wear resistance and overall service life of the key friction area of parts such as nuts.

The invention relates to the technical field of grinding machining, in particular to a chemical product production energy-saving grinding device which comprises a grinding bin and a grinding assembly. The grinding assembly comprises a grinding body, a separating plate, a flowing bin, two grinding and filtering units, two collecting units and a collecting bin, powder reaching the grinding standard is filtered into the flowing bin, and at the moment, raw materials which are not completely ground are left in the grinding bin; the flowing bin enables internal powder to flow to the grinding and filtering units on the two sides to filter large particles contained in the powder, the filtered large particles enter the collecting bin through the collecting unit to be collected in a centralized mode, and after the collecting bin is full, a worker feeds the large-particle raw materials in the collecting bin into the grinding bin again and conducts secondary grinding together with the raw materials which are not completely ground. If not, continuing to repeat the operation; therefore, substandard raw materials can be separated, after standard powder is filtered out, the substandard raw materials are subjected to independent secondary grinding, and repeated grinding of the standard powder is avoided.

The invention belongs to the technical field of powder processing, and particularly relates to an electromagnetic suspension type non-contact mixing device and a control method thereof.The electromagnetic suspension type non-contact mixing device comprises a control bottom table, and a movable platform is arranged on the upper surface of the control bottom table; the two groups of torque components are symmetrically arranged on the two sides of the upper surface of the moving platform; the suspension component is arranged in the middle of the upper surface of the moving platform. According to the device, internal powder can be driven to be stirred by twisting the containing barrel shell, when the containing barrel shell rotates, torque acting force is provided through the side edge magnetic rings on the two sides, and it can be guaranteed that the containing barrel shell is in a suspended state and does not make contact with an external object through the suspension magnetic ring in the middle; therefore, when the accommodating barrel shell rotates centrifugally, the problem of contact abrasion of the outside of the accommodating barrel shell is avoided, meanwhile, the resistance effect on the accommodating barrel shell is greatly reduced, and the problems that the inside of a container is abraded violently, and falling container residues are mixed into materials to pollute the mixed materials are avoided.

The utility model relates to the technical field of nano silicon processing, in particular to a nano silicon powder collecting device. Comprising a collecting tank, a discharging valve, a cover plate, an adding assembly and a pumping and removing assembly, the pumping and removing assembly comprises a positioning seat, a first filter screen, a fixing plate, a connecting frame, a second filter screen, a branch pipe, a vacuum pump, a monitoring component and a blocking component, nanometer silicon powder is fed by opening the adding assembly and closing the discharging valve, and it needs to be guaranteed that the first filter screen is not submerged during feeding; then the adding assembly is closed, external air can be directly prevented from entering the interior, a vacuum pump is further started, a control valve on a branch pipe is opened, dust is filtered through a first filter screen and a second filter screen, internal gas can be pumped out, internal powder is prevented from being oxidized, and a discharging valve is opened when material guiding use is needed; therefore, the problem that the existing collecting device does not have the function of keeping the low oxygen in the internal environment, so that the risk that the nano silicon powder is oxidized exists, and the production quality of the product is reduced can be solved.

The present invention provides a white coated LED filament and its production process and LED bulb, optimizing the white coated powder from being painted originally on internal surface of the glass shell to be painted on the surface of the filament, thus forms a coated white layer on the surface of the filament, and bonds whit the filaments for one-time molding, which simplifies the existing internal powder painting process of the glass shells, and reduces the cost of the finished products in terms of the usage and production of the clients, and also greatly improving the stability of the white coated filament bulbs, so that the color bleaching and its photoelectric parameters are in a manageable state, therefore the production process is become simply, the cost is lower, and improve the clients' usage scope, reduce the clients' usage cost, and can satisfy the existing market client's requirements for the product of the filaments bulbs with white coated.

The present invention provides a white coated LED filament and its production process and LED bulb, optimizing the white coated powder from being painted originally on internal surface of the glass shell to be painted on the surface of the filament, thus forms a coated white layer on the surface of the filament, and bonds whit the filaments for one-time molding, which simplifies the existing internal powder painting process of the glass shells, and reduces the cost of the finished products in terms of the usage and production of the clients, and also greatly improving the stability of the white coated filament bulbs, so that the color bleaching and its photoelectric parameters are in a manageable state, therefore the production process is become simply, the cost is lower, and improve the clients' usage scope, reduce the clients' usage cost, and can satisfy the existing market client's requirements for the product of the filaments bulbs with white coated.