46results about How to "Extended production time" patented technology

The invention relates to the technical field of production process control, and discloses an intelligent production method and system for a thin-wall concrete electric pole, and the method comprises the steps: obtaining the hardening state grade of the interior of concrete through constructing a hardening state evaluation model; dividing the interior of the electric pole into a plurality of control units, calculating a hardening unevenness index, and generating a hardening homogenization scheme; acquiring historical production data, and extracting a matched reference internal mold demolding scheme as an initial internal mold demolding parameter; according to the hardening state grade of the interior of the concrete, the initial internal mold demolding parameters are calibrated, and second internal mold demolding parameters are obtained; the inner mold demolding process is controlled according to the second inner mold demolding parameter, the demolding process is monitored in real time, and closed-loop optimization control is conducted; according to the method, the concrete internal hardening state and historical production experience are comprehensively considered, intelligent control over the thin-wall concrete pole production process is achieved through dynamic evaluation and calibration, and the production quality and efficiency are improved.

The invention relates to a 3D printing method capable of accurately arranging various powder materials and a printing device thereof. The 3D printing method comprises the following steps that at least two kinds of powder are placed in powder material bins with the corresponding number; each material in the same layer is arranged and formed after the former material is arranged and formed; the material arranging and forming method comprises the following steps that a powder distributing plate is moved to a powder material bin, the top face of the powder distributing plate is covered with an area where powder needs to be arranged through electrons, materials are adsorbed to the corresponding position of the bottom face of the powder distributing plate through charge polarization, and the powder distributing plate is moved to the position above a forming bin; electrons on the top surface of the powder distribution plate are removed to enable the powder to fall into a forming area, and the powder distribution plate is moved away for forming; thus, part forming is achieved by printing layer by layer in areas. Powder is adsorbed in a designated area through charge polarization, when the powder distribution plate moves to the corresponding position of the forming bin, adsorption of the powder distribution plate to the powder is eliminated, and multiple materials are accurately arranged on the same layer.

The invention belongs to the technical field of flat wires, and particularly relates to a flat wire welding device and process with precise positioning, the flat wire welding device comprises a workbench, the upper surface of the workbench is symmetrically and slidably connected with moving plates, and the upper surfaces of the two moving plates are symmetrically and slidably connected with moving blocks; a plurality of sleeves are fixedly connected to the interiors of the two moving blocks, first springs are fixedly connected to the interiors of the sleeves, moving rods are fixedly connected to one ends of the first springs, the moving rods are slidably connected with the inner walls of the sleeves, and a hydraulic cylinder is arranged between the two moving plates; according to the flat wire centering device, the movable rod can be adjusted in a self-adaptive mode, it is ensured that centering operation is smooth, and therefore the problem that in the production or transportation process of a flat wire, impurities can be attached to the two sides of the flat wire, and consequently the surface of the flat wire is uneven is solved.

The invention discloses an ignition process of a stainless steel hot continuous annealing furnace. The ignition process comprises the following steps: (1) preparing equipment, namely respectively arranging needle type gas flow regulating valves controlled by an annealing furnace control system on gas pipelines corresponding to burners in eight heating areas of an open fire heating area of the annealing furnace; (2) ignition control: (2.1) in the primary ignition process of the annealing furnace, the air amount and the gas amount of each burner in eight heating areas of an open fire heating area of the annealing furnace during ignition are given according to a formula; and (2.2) after the annealing furnace is successfully ignited for the first time, in the operation process of the annealing furnace, the air amount and the gas amount are given according to the maximum amount when all the burners in the eight heating areas of the open fire heating area of the annealing furnace are ignited again after flameout. The ignition device has the advantage of high ignition success rate.

The invention relates to vibrating diaphragm direct welding equipment and a vibrating diaphragm direct welding method for a moving coil and flat plate combined earphone. The equipment comprises a solder smearing mechanism, an image positioning mechanism, a laser source, a galvanometer mechanism, a spraying mechanism, a displacement mechanism, a controller and other key components. In the welding process, the device accurately recognizes the position of the metal ring through the image positioning mechanism, laser welding of a welding hole in the metal ring and laser cutting of a vibrating diaphragm base material outside the metal ring are achieved at the same time in one-circle scanning through the laser source and the galvanometer mechanism, and the size of the cut metal ring is equal to that of the vibrating diaphragm base material; complex steps and errors caused by independent positioning of the vibrating diaphragm in the prior art are avoided. The high-precision processing capability of the equipment ensures the precision and consistency of diaphragm manufacturing, and the production efficiency and the product quality are improved.

The utility model discloses a forklift power battery module structure convenient for wiring and capable of avoiding short circuit, and aims to solve the problems that the production difficulty is high, a battery cell is easy to deform and damage, and the short circuit is easy. The battery pack comprises a box body, a plurality of groups of battery cell modules and soft copper bars are arranged in the box body side by side, the adjacent battery cell modules are connected in series through the soft copper bars, each battery cell module comprises a battery cell mounting and limiting assembly, a plurality of battery cells are sequentially stacked in the battery cell mounting and limiting assembly, and the battery cells are connected in series through the soft copper bars. The battery cell mounting and limiting assembly is used for limiting and fixing the battery cells, aluminum sheet connecting assemblies are arranged on tabs of the plurality of battery cells, and the plurality of battery cells are electrically connected through the aluminum sheet connecting assemblies. The battery module is applied to the technical field of battery modules.

The utility model belongs to the technical field of hazardous waste treatment, and particularly relates to a desalting device at the bottom of a wet deacidification washing tower. The bottom desalting device of the wet deacidification washing tower comprises a tower body, and is characterized in that a plurality of water inlet flange distributors are uniformly arranged at the bottom of the tower body along the tangential direction, the water inlet flange distributors are respectively connected with a water inlet pipe, a slope is arranged at the bottom in the tower body, and a blow-off pipe connected to the tower body is arranged at the lowest point of the slope. The utility model has the beneficial effects that sediments and accumulated salts in the bottom of the tower can rotate circularly and are discharged along with the blow-off pipeline, so that the sediments and the accumulated salts in the tower can be discharged completely, the normal production time of an incineration line is greatly prolonged, and the deacidification efficiency is always kept in an optimal state.

The invention discloses an insulating end plate, a stator, a motor and a compressor, and relates to the technical field of motors, the insulating end plate comprises an outer peripheral wall, a plurality of inner peripheral walls arranged on the inner periphery of the outer peripheral wall and tooth parts, each tooth part is connected with the outer peripheral wall and one inner peripheral wall, the plurality of inner peripheral walls are arranged at intervals to form a circle, and the tooth parts are arranged on the inner periphery of the outer peripheral wall. K1 lead wire parts are arranged on the peripheral wall, K2 wire clamping grooves are formed in each lead wire part, and the ratio of K2 to K1 is larger than or equal to 0.5 and smaller than or equal to 2. According to the technical scheme provided by the invention, the production efficiency can be improved while the contact resistance is reduced.

The utility model provides a follow-up shearing machine, which relates to the technical field of metallurgical hot rolling, and at least comprises a rack, a shearing machine, a shearing mechanism, a shearing mechanism, a shearing mechanism, a shearing mechanism, a shearing mechanism, a shearing mechanism, a shearing mechanism and a shearing mechanism, and is characterized in that the rack is provided with two parallel central shafts which are spaced, and the shearing center line of the follow-up shearing machine is perpendicular to the central shafts and is positioned between the two central shafts; the two knife rests are matched with the two center shafts in a one-to-one correspondence mode, the knife rests are installed on the center shafts and can rotate around the corresponding center shafts, and shear blades are installed on the knife rests and can rotate to a shear center line along with the knife rests; the driving device is connected with one tool rest and drives the corresponding tool rest to rotate around the central shaft; the linkage mechanism is connected with the two tool rests respectively, the linkage mechanism drives the two tool rests to rotate reversely, and the two shear blades can synchronously rotate to the shearing center line. The follow-up shearing machine provided by the utility model has the functions of breaking and shearing at the same time.

The utility model relates to the technical field of phosphate fertilizer wrapping agent processing equipment, in particular to a phosphate fertilizer wrapping agent producing and blending tank which comprises a tank body, a first coil pipe and a second coil pipe are arranged in the tank body, a set of bottom coil pipe is arranged at the bottom of the tank body, and a first feeding port and a second feeding port are formed in the two sides of the top of the tank body respectively. A first stirring paddle is arranged in the middle of the first coil pipe, a second stirring paddle is arranged in the second coil pipe, and a first blended material outlet, a second blended material outlet and a third blended material outlet are sequentially formed in the outer wall of one side of the tank body from bottom to top. According to the phosphorus fertilizer wrapping agent production blending tank, through scientific layout of the heating coil pipes and the coil pipes at the inner part and the bottom part, efficient and uniform heating of mixed materials in the tank body is realized. The technical effects are mainly reflected in the following aspects: firstly, the heating facilities inside and at the bottom of the tank body effectively reduce the heat loss, and the heating efficiency is greatly improved, so that the heat supply cost is reduced;

The utility model discloses an automatic grinding head replacing mechanism which comprises a clamp assembly and a first driving assembly used for driving the clamp assembly to move. The clamp assembly comprises a mounting plate, a first clamping jaw used for taking down an old grinding head from a polishing head, a second clamping jaw used for clamping a new grinding head and sending the new grinding head to the polishing head and an in-place pressing rod used for pressing the new grinding head to the polishing head, and the first clamping jaw, the second clamping jaw and the in-place pressing rod are arranged below the mounting plate in a staggered mode. The utility model further provides a polishing machine. According to the automatic grinding head replacing mechanism, new and old grinding heads can be replaced, pressing is in place, automatic replacement of the grinding heads is achieved, and production efficiency is improved. According to the polishing machine, the grinding head can be automatically replaced, raw materials can be automatically fed or discharged, the production time of the polishing machine is greatly prolonged, and the production efficiency is multiplied.

The utility model discloses a scraper type ash removal device of a hazardous waste heat boiler, and belongs to the technical field of furnace ash treatment. The ash removal scraping plate, the scraping plate track, the connecting rod and the limiting block are arranged in an ash discharging chamber of the waste heat boiler, and the push plate handle is arranged outside the ash discharging chamber of the waste heat boiler. The ash removal scraper is installed on the scraper track, the scraper track is embedded in the inner side of the ash discharging chamber wall, and the limiting blocks are installed at the two ends of the scraper track; a strip-shaped long opening capable of penetrating through a connecting rod is formed in the wall of the dust discharging chamber, after the connecting rod penetrates through the strip-shaped long opening, one end of the connecting rod is connected with a push plate handle through a screw, the other end of the connecting rod is connected with a dust cleaning scraper through a screw, and the push plate handle drives the connecting rod to further drive the dust cleaning scraper to reciprocate on a scraper rail along the strip-shaped long opening. Therefore, dust removal of the inner wall of the dust discharging chamber is completed. According to the utility model, fine ash adhered to the inner wall of the ash discharging chamber can be removed, so that the production time is prolonged while the labor cost and the maintenance cost are reduced.

The present invention relates to the technical field of natural gas and oil production, and discloses a plunger and an oil and gas well structure. The plunger provided by the embodiment of the present invention operates in an oil and gas well. The inner diameter of the wellhead pipeline of the oil and gas well is smaller than the inner diameter of the well. After the plunger moves upward into the wellhead pipeline, the sealing piece moves radially inward under the pressure of the inner wall of the wellhead pipeline, so that a limiting gap is formed between the limiting part and the inner circumference of the core tube. At this time, the locking member moves from the unlocking position to the locking position under the drive of the actuator, and the locking member is embedded in the limiting gap to prevent the sealing piece from moving radially outward, so that the diameter of the plunger is smaller than the inner diameter of the well. In this way, the downward resistance of the plunger is greatly reduced, and the plunger can quickly descend to the bottom of the well. The plunger can even descend to the bottom of the well in the open well state. When the plunger descends to the bottom of the well, the locking member moves from the locking position to the unlocking position under the drive of the actuator, so that the plunger can ascend.

The invention discloses a manufacturing method of a plant disease specimen. The manufacturing method of the plant disease specimen provided by the invention comprises the following steps: collecting a fresh plant disease sample for pretreatment; carrying out vacuum freeze-drying treatment on the pretreated sample; embedding the sample subjected to vacuum freeze-drying treatment by using an epoxy resin crystal glue solution subjected to bubble removal to obtain the plant disease specimen. According to the method, the problems of early-stage shape fixation and later-stage preservation and maintenance of the specimens are solved, the morphological characteristics, colors and the like of host plants and pathogenic bacteria in the plant disease specimens in a natural state are reserved, the plant disease specimens can be massively preserved for a long time, and the use efficiency of experimental materials in circulation teaching is improved.

The invention relates to the field of crystallizer equipment, and discloses double-layer crystallizer equipment which comprises a support, treatment barrels are fixedly connected to the left side and the right side of the interior of the support, and multiple layers of stirring mechanisms are arranged in the treatment barrels; the multi-layer stirring mechanism comprises a supporting plate, a two-way motor, two sleeves and four fixing plates, the left side and the right side of the supporting plate are fixedly connected to the inner side walls of the two treatment barrels, and the bottom wall of the two-way motor is fixedly connected to the top wall of the supporting plate. According to the invention, through the arrangement of a multi-layer stirring mechanism, the problems that crystals have relatively large difference in granularity and form, are easy to accumulate and block and influence normal operation of equipment can be solved, and two first rotating rods rotate and penetrate through the inner space of the treatment barrel, so that the crystallization time is effectively shortened, the production efficiency is improved, and the production cost is reduced. The contact opportunity between the medicament and the crystal is increased, so that the formation of a crystal nucleus is accelerated.

The present invention discloses a squirrel cage crusher for preventing sticking materials, and specifically relates to the technical field of squirrel cage crushers, comprising a through-length base, both sides of the top of the base are fixedly provided with chassis, the base is provided with a casing, the casing is located between the two casings, the cross section of the upper half of the casing is set to be rectangular, the cross section of the lower half of the casing is set to be semicircular, and the front side and the rear side of the top of the casing are both movably connected with a cleaning door through hinges. The present invention increases the space inside the casing, changes the shape of the casing, and designs the top of the casing to be rectangular, so that the distance from the material to the inner wall of the casing is increased and the power is reduced. The power of most materials is reduced to zero, and it is not easy to stick. At the same time, there is a certain amount of time to fall, so that it will not be squeezed by the first hitting stick quickly and piled up layer by layer, thereby extending the maintenance and cleaning interval time, extending the service life of the first hitting stick, reducing equipment failures, saving energy and reducing consumption, and ensuring normal production.

According to the auxiliary tool for machining the piston pin hole of the marine diesel engine, the part, protruding out of an assembly spigot, of the top of a piston is located on the upper end face of a locating disc and located in a sinking groove in the inner side of a spigot locating ring table, and the assembly spigot and the spigot locating ring table are in circumferential locating connection through a locating assembly; a pressing plate used for being matched with a conical ring face in an inner cavity in the top of the piston and pressing the piston is further arranged on the upper portion of the positioning disc, a double-end bolt is vertically fixed to the center of the positioning disc, and the upper end of the double-end bolt penetrates through a center hole in the pressing plate to be connected with a nut in a matched mode. By designing the clamping and positioning tool for machining the piston pin hole, the precise machining effect of high straightness of the piston pin hole of the diesel engine is achieved, the machining quality and machining efficiency of the piston pin hole of the diesel engine are effectively improved, the auxiliary time for alignment and clamping of the piston pin hole machined on a pin hole boring machine is shortened, and the machining efficiency of the piston pin hole is improved. The machining quality of the diesel engine piston pin hole is improved, and the production time, the assembly quality and the service life of the diesel engine piston are improved.

The invention relates to the technical field of tipping paper treatment, in particular to a tipping paper gravure online fine gold stamping device which comprises a support, a base, a driving motor, a driving rotating wheel, a rotating mechanism, a gravure roller and a gold stamping assembly. The base is installed on the support, the driving motor is installed on the side face of the base, the driving rotating wheel and the rotating mechanism are installed in the base, the gravure printing roller is installed at one end of the driving rotating wheel, and the gold stamping assembly is installed at one end of the rotating mechanism. The driving motor drives the driving rotating wheel to enable the gravure printing roller to conduct gravure printing on tipping paper, the driving rotating wheel drives the rotating mechanism to conduct intermittent fixed-angle rotation, and therefore the gilding assembly is turned over by a certain angle at a time to conduct gilding treatment on the tipping paper.

The utility model relates to an air suction device, feeding device and filling equipment, the filling equipment comprises a filling assembly and a feeding device, the feeding device comprises a material arranging assembly, a discharging track and an air suction device, the material arranging assembly comprises a material arranging hopper and a material arranging track, the material arranging hopper is internally provided with the material arranging track, the discharging track is communicated with the material arranging track, and the air suction device is arranged in the material arranging hopper. The air suction device comprises an air suction cover, an installation assembly and a vacuum pump, the installation assembly comprises a first installation base and a second installation base which are arranged in the discharging direction perpendicular to the packaging materials, the first installation base and the second installation base are installed on the two opposite sides of the discharging track, and the first installation base and the second installation base are both connected with the air suction cover; the vacuum pump communicates with the suction hood. Packaging materials are arranged in the material arranging hopper into the material arranging rail and conveyed into the discharging rail, the air suction device sucks away foreign matter on the surfaces of the packaging materials in the discharging rail, and the foreign matter is prevented from being mixed into objects to be filled. The air suction device is arranged, the structure is simple, installation is convenient and fast, and the input cost is low.

The present invention relates to the field of welding technology, and discloses a semi-automatic quartz boat rapid welding device, comprising a welding platform, first clamps are symmetrically installed on both sides of the welding platform, a second clamp is symmetrically installed in the middle of the welding platform, welding tools are installed on the top of the welding platform in a rectangular and equidistant arrangement, and a centering limit assembly for preventing the distance between the slot rod and the nail side plate from being unequal is symmetrically arranged on the outer side of the second clamp, and the slot rod is pushed to the center position by rotating the double-threaded screw and indirectly driving the centering rod to move, thereby ensuring that the slot rod can be automatically and accurately positioned in the middle of the device before welding, eliminating the position deviation occurring during manual placement; the above-mentioned automatic positioning mechanism not only improves the consistency of welding, but also reduces the phenomenon of empty welding caused by human errors. Secondly, the limiting pulling action of the limiting shell and the telescopic rod can prevent the centering rod from excessively pushing against the slot rod, further ensuring the accuracy and stability of the slot rod positioning.

The invention relates to the field of laser cutting, and particularly discloses non-contact cambered surface metal cutting equipment which comprises a machining table, a main electric guide rail and a placement assembly, a bearing plate is arranged at the top of the machining table, side plates are arranged on the two sides of the machining table through sliding grooves, and adjusting pieces are arranged on the front faces of the two side plates; a protective plate is arranged on the front face of the adjusting part, a light shielding plate is arranged on the inner side of the protective plate, a main electric guide rail is arranged on the inner side of the side plate, and a transmission assembly is arranged in the machining table. Compared with traditional equipment, qualitative leap is achieved in the aspects of safety protection and environmental protection, the adaptability to workpieces of different shapes and sizes is greatly improved, frequent equipment replacement or complex adjustment is not needed, the production cost and time delay are greatly reduced, the strict requirements of modern industry for cutting precision and efficiency are met, and the production efficiency is improved. And a powerful guarantee is provided for large-scale production and efficient processing.

The invention relates to the technical field of oil well protection, in particular to a rotary well washing oil layer protection device which comprises an upper connector, a ball cover, a center pipe and a lower connector, a plurality of liquid inlet holes are formed in the outer wall, close to the ball cover, of the upper connector, and a first stop pin, a check ring, a valve ball and a valve seat are arranged in the ball cover; a sand blocking assembly is arranged on the upper connector in a sleeving mode, a righting assembly is fixedly arranged at one end of the sand blocking assembly, a shifting fork and a deblocking assembly are arranged on the center pipe in a sleeving mode, and a linkage assembly and a setting assembly are arranged on the deblocking assembly in a sleeving mode. The production time is effectively prolonged, the rotating force is converted into the anchoring force, torque transmission is stable, anchoring is more reliable, the sand blocking assembly can prevent silt and other impurities from precipitating around the setting assembly, the unsetting success rate is increased, and the situation that a pipe column is clamped in the unsetting process is avoided.

The utility model relates to the field of sodium salicylate, in particular to a sodium salicylate production device, which comprises a reaction barrel for carrying salicylic acid and sodium carbonate for fusion reaction, and a servo motor arranged at the bottom of the reaction barrel and used for driving internal components to rotate. The device is provided with the servo motor, the transmission rod, the inner mixing barrel, the outer caulking groove, the snakelike heating pipe, the hot-air blower and the hot-air pipeline, when the device is used for assisting sodium salicylate production work, salicylic acid and sodium carbonate can be put into the inner mixing barrel for mixing and stirring, and the servo motor synchronously drives the inner mixing barrel to rotate in the reverse direction; therefore, forward rotation and reverse rotation are formed with the bottom-wrapping stirring frame, internal salicylic acid and sodium carbonate are spirally mixed and stirred, hot air is injected into the inner mixing barrel in cooperation with the hot air blower and the hot air pipeline, heat transfer is formed on the barrel wall in cooperation with the snakelike heating pipe, and the whole salicylic acid and sodium carbonate are heated and mixed more thoroughly.

The utility model provides a flange short section for oil well blowout, which is used for being connected between an oil nozzle manifold at a wellhead and an oil nozzle manifold at a blowout position, and comprises a first flange, a second flange and an outer pipe connected between the first flange and the second flange, an inner pipe is assembled in an inner cavity of the outer pipe, and the inner pipe is connected with the first flange and the second flange. An annular wall clamping cavity is formed between the outer pipe and the inner pipe; wherein the inlet end of the inner pipe is connected with a puncture-proof sleeve, the inner pipe comprises a punching screen pipe arranged close to the puncture-proof sleeve, and the inner pipe further comprises a slotted screen pipe arranged at the outlet end of the inner pipe. The anti-stabbing oil nozzle has the advantages that oil-gas fluid can be depressurized through the anti-stabbing sleeve, impurities in the oil-gas fluid can be collected through the annular clamping wall cavity, and a blowout pipeline can be prevented from being stabbed to be damaged, and the oil nozzle can be prevented from being blocked.

The utility model relates to chemical fibre spinning equipment technical field discloses a kind of double mother particle blending injection devices, including base, the top four corners of base are uniformly connected with fixed column, the top of multiple fixed column is fixedly connected with fixed base, the top of fixed base is provided with double-cone hopper assembly, the bottom of fixed base is provided with double-channel melting component, the bottom of double-channel melting component is provided with dynamic mixing component, the top left and right sides of fixed base are provided with anti-blocking component, the inside of dynamic mixing component is provided with dismounting component, double-cone hopper assembly includes two weightless feeder.The utility model realizes the anti-blocking of blending injection device, then without making device frequent shutdown to clean and maintain, production process can be continuously carried out, effectively increase production time, improve production efficiency.

This utility model discloses an automatic bag feeding device for a packaging machine, comprising a bag feeding platform with a first photoelectric switch; a bag bin on one side of the bag feeding platform, the bag bin comprising several parallel bag bin plates, the top of the bag bin plates being higher than the inner bottom of the bag feeding platform; a guide seam between adjacent bag bin plates; a transmission mechanism below the bag bin, with several sets of push rods on the transmission mechanism; when the push rods are perpendicular to the bag bin plates, the top of the push rods passes through the guide seam between adjacent bag bin plates; and a controller, the signal output terminal of the first photoelectric switch being connected to the controller signal, and the signal input terminal of the drive motor of the transmission mechanism being connected to the controller signal. This device has a simple structure, requiring no modification to the original packaging machine structure; it solves the problem of discontinuous packaging caused by machine stoppages during bag placement, automatically feeding bags, eliminating the need for frequent manual bag placement, reducing labor intensity and risk factors, and increasing packaging speed.

The invention discloses an illumination lamp production control method and system, and the method comprises the steps: carrying out the positioning detection of each process node, and carrying out the matching of a corresponding process video based on a process feature corresponding to a process, thereby facilitating the definition of a corresponding process video for each production process, defining an abnormal motion point based on the traversal of a process motion, and carrying out the recognition of the motion abnormal point. Defining production abnormal factors according to the motion abnormal points, matching corresponding optimization means based on the production abnormal factors, and performing real-time optimization; the process time required by each production process is collected, the actual production time of the lighting lamp is constructed based on the plurality of process times, the actual production time of the lighting lamp and the model of the lighting lamp are associated, and the optimized production time is defined according to the actual production time of the lighting lamp and the model of the lighting lamp. And each process node is dynamically controlled based on the optimized production time, so that the optimized production time is conveniently defined, and the production efficiency of the lighting lamp is ensured.

The utility model belongs to the technical field of tobacco production, and particularly relates to an anti-blocking and anti-overflow filter screen box device in a wet dust collector. Comprising a first filtering area, a second filtering area and a third filtering area; two sides of the second filtering area are respectively connected with the first filtering area and the third filtering area to form an integral structure; the diameters of the filter holes in the first filter area are gradually increased from top to bottom; the second filtering area is of a groove-shaped structure composed of a bottom area, a left side area, a right side area, a front area and a rear area. According to the technical scheme, irrationality of a filter screen box structure in the wet dust collector can be greatly improved, normal production time of the dust collector can be greatly prolonged under the condition that the filter screen box is not cleaned manually by adopting the anti-blocking and anti-overflow filter screen box device, effectiveness of continuous operation of the dust collector is guaranteed, timeliness is improved, and production efficiency is improved. And adverse effects on normal production of the tobacco cutter caused by weakening of the dust removal capability of the dust remover and even blockage and shutdown are reduced as much as possible.

The application discloses a method for preparing lithium hexafluorophosphate. According to an embodiment of the application, the method comprises: mixing a phosphorus pentafluoride gas with a lithium fluoride solution to obtain a first treatment product; and performing a reaction treatment on the first treatment product to obtain a reaction solution containing lithium hexafluorophosphate. The mixing treatment is performed in a first continuous flow reactor, and the reaction treatment is performed in a second continuous flow reactor. The method of the application overcomes the shortcomings of the existing batch production technology, effectively avoids the invalid operation time in the starting and ending stages of traditional production, and thus improves the production efficiency and the output per unit time.

The utility model discloses a box transformer substation high-voltage ring main unit capable of improving secondary assembly speed, which comprises a busbar chamber, a secondary component chamber and a cable chamber, the busbar chamber and the secondary component chamber are arranged above the cable chamber, the secondary component chamber is arranged at the front part of the busbar chamber, a component independent mounting plate is arranged in the secondary component chamber, and the component independent mounting plate is arranged in the cable chamber. Components can be installed on the component independent installation plate, the installation plate is assembled on a cabinet after the components are installed and wires are connected, rapidness and high efficiency are achieved, and a plurality of pressure relief channels are formed in the back of the cable chamber. According to the high-voltage ring main unit, the number of mounting plates for independent components is increased at present, secondary components and wiring can be assembled at any place, and when a workshop receives a high-voltage ring main unit project in a box transformer substation, the mounting plates can be firstly manufactured, the secondary components and wiring can be synchronously carried out with shell manufacturing, so that primary assembly is not interfered, and the working efficiency is improved.