23results about How to "Avoid direct access" patented technology

This utility model provides a welding fume purification and collection device for metal products. The device includes a housing, a filter assembly, a pipe body, an air inlet hood, and a pre-filtration mechanism. The filter assembly, housed within the housing, includes a fan, a filter element, and a telescopic pipe. The fan's input end is connected to the filter element, and the other end of the filter element is connected to the telescopic pipe, which communicates with the pipe body. The pre-filtration mechanism is located within the telescopic pipe. This device relates to the field of welding fume treatment. By incorporating a pre-filtration mechanism within the telescopic pipe, this utility model effectively filters and intercepts large-sized impurities carried in the welding fume before it enters the filter element, preventing these impurities from directly entering the filter element. This significantly reduces the risk of filter element clogging and damage, extends the filter element's service life, and reduces maintenance and replacement costs.

The utility model discloses an electromagnetic heating humidifier which comprises a shell, an electromagnetic heating device, an electromagnetic heating device, an electromagnetic heating device, an electromagnetic heating device and an electromagnetic heating device. The middle of the shell is provided with a containing box, and the bottom of the containing box is provided with a plurality of hanging pins and connecting pins. The electromagnetic heating assembly is arranged in the shell and located below the containing box. The water tank is detachably arranged in the accommodating box; the base plate is arranged at the bottom of the shell, the weight of the humidifier acts on the base plate through butt joint and fixation of the connecting columns and the connecting feet, the base plate is provided with a weighing sensor, and the weighing sensor is electrically connected with the circuit board. According to the utility model, the weighing sensor is used for indirectly monitoring the water quantity, the signal interference of a magnetic conductive material to the sensor is avoided, the compatibility problem of the detachable water tank and electromagnetic heating is solved, the balance between the convenient cleaning of the detachable water tank and the electromagnetic heating efficiency is realized, and the installation limitation of the sensor is avoided through indirect weight detection; the rigid connection structure ensures the pressure measurement precision and effectively reduces the risk of dry burning.

This invention belongs to the field of lithium-ion battery electrolyte material preparation technology, and provides a solid lithium hexafluorophosphate with low fine crystal content and its preparation method. The preparation method involves adding lithium fluoride to anhydrous hydrogen fluoride to form anhydrous hydrogen fluoride slurry. A portion of the anhydrous hydrogen fluoride slurry and phosphorus pentafluoride gas are fed into a primary continuous reaction crystallizer. The resulting slurry is subjected to low-temperature fractionation to form a first stream and a second stream. The second stream enters a secondary continuous growth crystallizer and continues to react with phosphorus pentafluoride gas, followed by solid-liquid separation to obtain a solid wet product and mother liquor. The first stream, another portion of the anhydrous hydrogen fluoride slurry, and a portion of the mother liquor enter a pre-conditioning section, and the resulting pre-conditioned stream is returned to the feed end of the primary continuous reaction crystallizer. The solid wet product is then subjected to low-temperature washing and programmed vacuum drying to obtain the final product. This method, through the combination of fractional reflux, mother liquor participation in pre-conditioning, and continuous growth processes, reduces fine crystal entrainment and improves particle size distribution stability.

The utility model relates to the technical field of autoclaved fly ash green brick drying, and discloses an autoclaved fly ash green brick drying device which comprises a drying box and a cooling box, a filter cartridge is fixedly arranged at one end, close to the cooling box, of an exhaust pipe, a filter element is embedded in the filter cartridge, a spiral copper pipe is installed in the cooling box, and the spiral copper pipe is fixedly connected with the drying box. According to the waste gas cooling device, impurities contained in waste gas are filtered and intercepted through the filter element firstly, then the waste gas enters the spiral copper pipe in the cooling box, cooling water is driven by the circulating pump to surround the spiral copper pipe, the cooling water is cooled through the cooling water, and the waste gas is cooled through the cooling water. The heated cooling water can flow into the cooler to be cooled, then flows back into the cooling box to be recycled and is conveyed and distributed into the multiple sets of U-shaped hot air pipes through the air distribution pipes, hot air flow is jetted out in multiple directions, it is guaranteed that all the surfaces of each brick can make contact with hot air in cooperation with the multiple layers of trays, drying dead corners are avoided, and the drying efficiency is improved.

This invention discloses a dust removal device used in the battery recycling process, relating to the field of dust removal equipment technology. It includes: a reaction dust removal unit comprising a reaction component mounted on a fixed support, a guide component inside the reaction component, a recycling component at the bottom of the guide component, and a water curtain component on one side of the recycling component; a conical tank on the fixed support; a connecting pipe on one side of the conical tank; a buffer component inside the conical tank; a return spring inside the buffer component; and a push plate at the other end of the return spring, with the push plate slidably connected to the buffer component. After dust and harmful gases enter the reaction component, they impact the buffer component for cushioning and guidance. The water curtain component draws ammonia water from the recycling component and sprays out three layers of water curtain. After the dust and gases impact the water curtain, they come into large-area contact with the ammonia water, causing the harmful gases to react, lowering the temperature, and adsorbing large heavy metal particles which fall into the recycling component. The ammonia water is filtered and recycled.

The utility model discloses a novel drying furnace double air seal structure which comprises a drying furnace chamber body, a first air curtain air port device and a second air curtain air port device are respectively arranged on the inner side of the drying furnace chamber body, and a first folding plate, a second folding plate and a third folding plate are arranged between the first air curtain air port device and the second air curtain air port device in a crossed mode. By means of the structure, the double-air-seal structure is composed of the two sets of air curtain air opening devices and the multiple folded plates, the double-air-seal structure is installed at the top of the drying furnace chamber body, meanwhile, external cold air is prevented from directly entering the drying furnace, the second air curtain air opening device and the first folded plate form the backflow cavity, hot air overflowing is further reduced, and the drying efficiency is improved. The first baffle and the second baffle block hot air possibly appearing at the bottom and the top from overflowing correspondingly, hot air returns to the heating device through the air return opening, and hot air circulation is formed. A double-air-seal structure is adopted, overflowing of hot air in the drying furnace and direct entering of cold air outside the furnace into the furnace are reduced, and the temperature in the furnace is maintained to be stable to the maximum extent.

The application provides an engine crankcase ventilation system, comprising a cylinder head, a cylinder head exhaust chamber of the cylinder head being communicated with a cylinder head exhaust chamber of the crankcase through a cylinder head internal oil gas return channel, a first crankcase internal oil gas return channel, a second crankcase internal oil gas return channel, a third crankcase internal oil gas return channel, a fourth crankcase internal oil gas return channel, an oil pan exhaust chamber of an oil pan and the cylinder head exhaust chamber; the cylinder head exhaust chamber is communicated with a transmission case exhaust chamber of a transmission case, a crankcase longitudinal separation channel and a flywheel housing upper horizontal oil gas channel at a free end; the cylinder head exhaust chamber is communicated with a flywheel housing exhaust chamber of a flywheel housing, a flywheel housing internal vertical oil gas channel, a flywheel housing upper horizontal oil gas channel, a breather and a flywheel housing oil return channel at a transmission end; and the breather oil return channel is communicated with the oil pan exhaust chamber. The engine crankcase ventilation system effectively reduces breather separation pressure, reduces oil consumption and air pollution.

The double-air-hole angled high-reliability pilot valve with the dustproof boss comprises a valve cover (1) and a cover column (2) integrally formed with the valve cover, two inclined air holes (3) inclining downwards are symmetrically formed in the side wall of the cover column, and the dustproof boss (4) expanding outwards is arranged at the outlet end of each inclined air hole. The utility model has the beneficial effects that: a redundant double-hole structure is adopted; symmetrical double holes ensure that the exhaust function is still maintained when a single hole is blocked, and the anti-blocking reliability is improved by more than 200%; by means of the gravity self-drainage principle, rainwater cannot flow back into a valve cavity along an inclined hole channel of the inclined air hole, the inclination angle is larger than the critical infiltration angle of liquid (usually lt: 30 degrees), and physical water prevention is achieved; the maintenance-free design is adopted, a traditional dustproof net is omitted, and the manufacturing cost is reduced by more than 20%; dust is difficult to deposit on an inclined hole wall due to the action of gravity, and the sensitivity of the diaphragm is kept at an initial value of 95% or above due to a dry and dust-free environment of a valve cavity.

The invention relates to the technical field of traditional Chinese medicine active component extraction and raw material medicine purification, in particular to a staged extraction and purification method of traditional Chinese medicine active component raw material medicine. Wherein the raw material medicine of the active component of the traditional Chinese medicinal materials is a matrine raw material medicine, and the preparation method comprises the following steps: S1, carrying out contact extraction on the matrine-containing traditional Chinese medicinal materials and an acidic ethanol aqueous solution to obtain a total alkaloid extracting solution; s2, obtaining a first-time segmented extraction solution; s3, obtaining a desalted enrichment solution; s4, obtaining a matrine fumarate crystal; s5, obtaining a matrine organic phase; and S6, obtaining the matrine bulk drug. By constructing a series purification technical scheme of ethanol-phosphate aqueous two-phase segmented enrichment, nanofiltration dialysis replacement desalination, fumaric acid selective salification crystallization, free alkali release extraction and displacement anti-solvent crystallization, segmented selective enrichment and purification of matrine in the total alkaloid extracting solution are realized.

The utility model provides a fully waterproof outdoor small-spacing LED display screen. The fully waterproof outdoor small-spacing LED display screen comprises a box body and a display screen body. The box body comprises a front mounting shell and a rear mounting shell, a high-definition tempered glass panel is mounted on the front side surface of the front mounting shell in an embedded manner, L-shaped protection plates are adhered to the two sides of the inner wall of the high-definition tempered glass panel respectively, and one end of each L-shaped protection plate is fixedly connected with the inner side wall of the front mounting shell; a partition shell is fixedly connected to the middle of the front side wall of the rear mounting shell, a buffer air cavity is formed between an inner cavity of the partition shell and the rear mounting shell, and the display screen is mounted in a display screen mounting cavity; the lower ends of the separation shell and the front installation shell are provided with air holes which correspond to each other up and down, an exhaust fan is installed at the upper ends of the air holes in the separation shell, and heat dissipation holes are formed in the front side wall of the separation shell. According to the outdoor small-spacing LED display screen, rainwater or water vapor is effectively prevented from directly entering the display screen from mounting gaps of the display screen box body, the moisture-proof performance and the heat dissipation performance of the box body are improved, the service life of the outdoor small-spacing LED display screen is prolonged, and resource waste is avoided.

The utility model discloses a high flower bed of ecological drainage. The high flower bed of ecological drainage includes flower bed main part, filling system and overflow system. Flower bed main part has the groove of upper opening, filling system includes planting soil layer and support layer module, and planting soil layer fills in the groove, and support layer module is located below planting soil layer and is detachably connected with the groove, overflow system includes overflow pipe, grating cover plate and drain pipe, and the upper end opening of overflow pipe projects on the upper surface of planting soil layer and extends through the groove to the lower end, grating cover plate at least partially covers the upper end opening of overflow pipe, and drain pipe extends through support layer module and is provided with a plurality of through holes in the lateral wall. The present application can effectively intercept the larger volume sundries such as fallen leaves and branches. Reduce the risk of direct clogging of the pipeline by silt. Can be conveniently removed, without large-scale removal of planting soil.

The present application relates to the technical fields of chemical energy saving and equipment corrosion prevention, and particularly relates to a heat exchange device, which comprises a triple heat exchanger, a steam pipeline connected to an inlet of a shell side of the triple heat exchanger, a tube-and-shell heat exchanger, and an ethylbenzene atomizer, wherein an outlet of a tube side of the triple heat exchanger is connected to an inlet of a tube side of the tube-and-shell heat exchanger, an outlet of the tube side of the tube-and-shell heat exchanger is connected to a circulating water cooling system, an inlet of the shell side of the tube-and-shell heat exchanger is connected to an ethylbenzene feeding pipeline, an outlet of the shell side of the tube-and-shell heat exchanger is connected to an ethylbenzene discharging pipeline, the other end of the ethylbenzene discharging pipeline is connected to the steam pipeline, and the other end of the ethylbenzene discharging pipeline is connected to the ethylbenzene atomizer, and the present application has the following beneficial effects: the problems of the triple heat exchanger inlet being prone to corrosion and the equipment being also subjected to cavitation corrosion in the prior art are solved, the steam and circulating water consumption is reduced, the comprehensive utilization efficiency of heat energy is improved, and the production cost is reduced.

The application relates to a small sun heater with a built-in fan, which comprises a fixed frame, an air inlet grid installed on one side of the fixed frame, an air outlet grid installed on the other side of the fixed frame, a heating assembly installed on the air outlet grid, a reflecting cover arranged in the fixed frame and facing the heating assembly, and a fan assembly arranged in the fixed frame and used for blowing air towards the reflecting cover, wherein the fan assembly is provided with an air outlet channel, and the reflecting cover is provided with an air inlet structure communicated with the air outlet channel. The application has the effect of avoiding local overheating of the small sun heater caused by heat accumulation.

This invention discloses a film capacitor with dual electronic control including a power relay, EMC filtering, and heat dissipation device, belonging to the field of capacitor technology. The film capacitor includes a casing, an EMC filtering component, and a copper busbar assembly. The copper busbar assembly includes a first positive copper busbar and a second positive copper busbar, which connect two separate circuits into a dual electronic control circuit. This allows for more reliable logic control with simplified hardware, resulting in high sensitivity and good coordination for controlling subsequent equipment. After assembly, this capacitor reduces the number of electronic components, saving space. Furthermore, the centralized control logic reduces the number of fault points, making subsequent fault diagnosis easier and reducing energy consumption from redundant components.

The invention discloses a fluidized bed drying and granulating integrated unit which comprises a vibration bed body, an eccentric motor is arranged at the side end of the vibration bed body, a spring foot stool is installed at the bottom of the vibration bed body, a vibration plate is arranged on the vibration bed body, and the bottom of the vibration bed body is communicated with the vibration plate through external air supply equipment to supply air. The top surface of the vibration plate is of a smooth plane structure, a plurality of long flow guide plates are arranged on the vibration plate, the long flow guide plates are arranged at equal intervals, each long flow guide groove is provided with a ventilation channel, and the ventilation channels are formed in the side walls of the two ends of each long flow guide groove respectively. By optimizing the structural design of the vibration plate, the ventilation channel is arranged on the side wall of the flow guide long plate, and the detachable module plate and the flow guide baffle are matched, so that the technical problem that ventilation holes of an existing vibrated fluidized bed are easy to block is fundamentally solved.

The invention discloses a hazardous waste incineration tail gas purification treatment device, and relates to the technical field of flue gas purification. A first spiral partition plate and a second spiral partition plate are arranged in an inner shrinkage cavity of an inner shell, so that flue gas forms rotating airflow, and primary separation of particulate matter is achieved through the centrifugal effect; meanwhile, disturbance and local acceleration treatment are carried out on air flow in combination with the separation assembly, particulate matter is further separated from the air flow, and therefore a multi-stage separation mechanism is formed, the separation efficiency of the particulate matter in the hazardous waste incineration tail gas is remarkably improved, and the better separation effect on fine particles is achieved; the gas flows back to the inner shell and is discharged after being subjected to particle sedimentation in a low-speed area, so that particles are prevented from directly entering the exhaust pipe, meanwhile, residual particles in the backflow gas are secondarily intercepted by utilizing the matching effect of a movable column, a spring and a filter screen in the backflow assembly, particle accumulation is reduced through elastic vibration, and the exhaust efficiency is improved. Therefore, the re-entrainment phenomenon of particulate matters is effectively reduced.

This utility model discloses a fan wheel structure and an air purifier. The fan wheel body has air inlet surfaces at both ends and two layers of air outlet surfaces on its lateral circumferential surface. Each layer consists of blades evenly distributed circumferentially, with adjacent blades forming an air outlet channel. The upper and lower blades are tilted in the same direction and staggered, so that the upper blades overlap the lower air outlet channel axially, improving airflow continuity and volume. The air purifier includes two opposing filter compartments, with an air inlet screen on the outer surface, a filter screen inside, and an air outlet screen on the side. The fan wheel body is located in the inner cavity, with its two air inlet surfaces corresponding to the filter compartments, and its air outlet surfaces facing the air outlet screens. The double-layer air outlet structure combined with the staggered blade design significantly improves air delivery capacity and efficiency; the symmetrical air inlet and outlet layout enhances the rationality of airflow organization and improves purification efficiency; the overall structure is compact, operates stably and with low noise, and is suitable for various air purification scenarios.

The invention discloses a cable drum stepping conveyor, and belongs to the technical field of stereoscopic warehouses. Comprising a support, and the support extends inwards to the stereoscopic warehouse and is matched with an automatic pallet fork. Conveying chains are assembled on the two sides of the support to operate in the warehouse-in and warehouse-out direction. Wire coil positioning and placing devices which move synchronously are assembled on the inner sides of the two conveying chains. The wire coil positioning and placing device forms a placing position where the axial direction of the wire coil is consistent with the conveying direction. According to the invention, through short-distance conveying design, interaction of cable drums inside and outside the intelligent stereoscopic warehouse is realized; warehousing of the cable drum can be realized, and ex-warehouse of the cable drum can also be realized; an operator or other equipment is prevented from directly entering the vertical warehouse for operation, and the safety during interaction of the cable drums is ensured; the cable drum stepping conveyor is adopted, accurate stepping conveying is achieved, the production efficiency is improved, the production safety risk is greatly reduced, and safety accidents of the working environment are reduced; and the structure is simple and mature, and maintenance is easy.

A chemical storage tank cleaning device comprises a crawler trolley, a swing mechanism, an auger and a jacking mechanism, the swing mechanism is rotationally arranged at the top of the crawler trolley, the side wall, close to the tail, of the auger is hinged to the swing mechanism in the X-axis direction, and the jacking mechanism is fixedly arranged on the swing mechanism in the Z-axis direction; the jacking mechanism is connected with the bottom close to the head end of the auger, and the jacking mechanism moves up and down along the Z axis so as to drive the auger to do pitching motion around the X axis; a driving part for providing power is arranged at the tail end of the packing auger, the driving part, the rotating mechanism, the jacking mechanism and the crawler trolley are all connected with a remote control device, and the remote control device controls the driving part, the jacking mechanism, the crawler trolley and the jacking mechanism to be linked, so that the packing auger enters the chemical storage tank along the manhole for solid waste cleaning. The invention further provides a chemical storage tank cleaning method. The tank cleaning operation efficiency of the storage tank can be effectively improved, an operator is prevented from directly entering the storage tank for operation, the labor intensity is reduced, and meanwhile, the operation safety and environmental protection risks are effectively reduced.

The utility model discloses a device for effectively preventing vibration of a deaerator in a heat supply season of a thermal power plant, and belongs to the technical field of thermal power plant equipment. Comprising a heat supply network drainage tank, a deaerator and a low-pressure heater, the bottom face of the heat supply network drainage tank communicates with a first pipeline, the side face of the first pipeline communicates with a pair of second pipelines, the free ends of the pair of second pipelines communicate with pumping pieces, a third pipeline is connected between the free ends of the pumping pieces, and the third pipeline is a four-branch pipe; the two free ends of the third pipeline are both communicated with control pieces, the free end of one control piece is communicated with a fourth pipeline, the tail end of the fourth pipeline is communicated with the deaerator, the free end of the other control piece is communicated with a fifth pipeline, the outer side of the fifth pipeline is communicated with a condensate water conveying pipeline, and the fifth pipeline is further communicated with an inlet of the low-pressure heater. The free end of the fifth pipeline is communicated with a first valve body, the other end of the first valve body is communicated with a sixth pipeline, and the sixth pipeline is further communicated with an outlet of the low-pressure heater.

The application discloses a high-performance conversion joint, comprising a conversion joint, a plurality of telescopic components connected to the conversion joint, and a sealing component connected to each of the plurality of telescopic components; a fitting component is arranged on each of the plurality of sealing components, and the plurality of sealing components are arranged above the conversion joint; a moving component is arranged in the conversion joint, the moving component is connected to the plurality of sealing components, and a connecting component is arranged on the moving component. When the device is connected to a drilling tool, the cold zone liquid in the drilling tool can impact the connecting component, so that the sealing component and the protection component are fitted at the connection position of the conversion joint and the drilling tool, the thread at the connection position of the conversion joint and the drilling tool is further protected, the service life of the conversion joint is prolonged, and the practicability of the conversion joint is further improved.

The utility model relates to a milk warmer and a milk shaking device, in particular to a filter assembly for the milk warmer or the milk shaking device, the milk warmer and the milk shaking device, and aims to solve the problem that airflow for heating a milk bottle in the prior art contains dust. In order to achieve the purpose, the filtering assembly used for the milk warmer or the milk shaking device comprises a shell, a draught fan and a filtering piece, the draught fan is arranged in the shell, an installation groove is formed in the shell, and the filtering piece is detachably arranged in the installation groove and used for filtering air flowing into the draught fan. According to the utility model, air entering the fan can be effectively filtered. The structure can prevent dust, impurities and other impurities in the air from directly entering the fan, so that the risk that the fan is damaged or blocked or the performance is reduced is reduced, the stability and reliability of whole machine operation are remarkably improved, and the overall service life of equipment is prolonged. A user can conveniently and quickly clean or replace the filtering piece regularly according to actual use conditions.