1555 results about "Rotating drum" patented technology

Apparatus for real time water content and water cement monitoring on a ready-mix concrete truck includes at least one real time moisture measurement module or sensor configured tosense continuous real time moisture measurements of a batch of wet cement loaded into a rotating drum of a ready-mix concrete truck; andprovide signaling containing information about the continuous real time moisture measurements sensed.The apparatus may include either a hatch door of the rotating drum of the ready-mix concrete truck, or the rotating drum of the ready-mix concrete truck, or the ready-mix concrete truck itself.

The invention is suitable for the technical field of powder metallurgy and advanced ceramic material sintering equipment, and provides an integrated flash sintering device for vacuum and a sintering method. The device comprises a power supply module, a high vacuum module, a first servo hydraulic machine, a second servo hydraulic machine, a third servo hydraulic machine, a mold rotation switching module, a vacuum feeding module, a green body pressing module, a demolding and mold cleaning module and a mold transfer module. According to the invention, an integrated gear tray design is adopted to integrate the functions of die installation, graphite paper treatment and green body pressing, and online synchronous cleaning of an electrode and a die is realized through die fixation and a cleaning brush arranged in a cleaning drum; therefore, full-automatic, high-efficiency and high-stability continuous production of flash sintering from powder filling to finished product collection is realized.

The invention relates to the technical field of fin production and processing equipment, in particular to a fin production line uncoiling mechanism which comprises a rack, a rotary drum, an uncoiling assembly and a material guide assembly. The uncoiling assembly is used for pulling raw materials of a material coil and located at one end of the rack. The rotating drums are used for assembling material coils, the two rotating drums are rotationally arranged on the rack, and the two rotating drums are sequentially arranged on the side, away from the uncoiling assembly, of the rack; the material guiding assembly is used for guiding the free end of the feeding coil, away from the uncoiling assembly, of the rotary drum to bypass the rotary drum close to the uncoiling assembly, and the material guiding assembly is arranged at the bottom of the rack. The fin uncoiling mechanism has the advantages that the problem of long shutdown time between two times of uncoiling operation in the fin uncoiling mechanism is solved, and the production line efficiency is improved.

The invention relates to the technical field of yellow phosphate rock powder clustering, in particular to yellow phosphate rock powder clustering equipment which comprises a base, a support is fixedly mounted at the top of the base, and spherical rotary drums are rotatably connected to the two sides of the inner wall of the support in a penetrating mode; a storage cylinder is fixedly mounted at the top of the support, a connecting pipe is rotatably connected into the storage cylinder in a penetrating mode, a quantifying cylinder is fixedly connected to the bottom of the connecting pipe, and a discharging assembly is arranged at the bottom of the quantifying cylinder. By arranging a quantitative barrel, a first through groove, a second through groove and a discharging assembly, the quantitative barrel is rotated to enable the first through groove to be aligned with the second through groove, an adhesive enters a connecting pipe through the first through groove and the second through groove, then the adhesive enters the quantitative barrel, scale marks are arranged outside the quantitative barrel, and after the liquid level in the quantitative barrel reaches a proper value, the adhesive is discharged. The quantitative barrel is rotated to enable the first through groove and the second through groove to be staggered, and the adhesive is quantitatively discharged into the spherical rotating barrel through the discharging assembly, so that the adding amount of the adhesive is controlled, and the agglomeration quality of the yellow phosphate rock powder is improved.

The invention relates to the technical field of inductor production, and particularly discloses a coil forming processing technology for manufacturing an inductor, a forming processing device is adopted for processing in the following steps: the forming processing device comprises a wrapping post, a connecting seat, a rotary drum, a rotary lifting assembly and a first linear driving piece; the processing technology comprises the following steps: a wire feeding step: forwards conveying a wire harness; a wire clamping step: enabling the end part of the wire harness to be clamped and fixed on the connecting seat; a winding step: inserting the winding post into the connecting seat, and controlling the winding post and the connecting seat to synchronously rotate and synchronously lift to obtain a coil; a wire breaking step: cutting off the joint of the coil and the wire harness; a transferring step: moving the wrapping post into the rotary drum to separate the coil from the wrapping post; and a welding step: transferring the coil into a welding mechanism for welding. The high-precision rotary lifting assembly is used for winding, the air cylinder is used for rapid ejection and demolding, and the demolding efficiency is greatly improved while the winding quality is guaranteed.

The invention provides an anti-blocking conveying system of a hugging type apocynum venetum cutting and bundling harvester and a control method of the anti-blocking conveying system. The conveying system comprises a pre-cutting detection system, a vertical conveying device, a height-adjustable crop stacking pressing plate device, a walking device anti-blocking conveying system and a control system. The vertical conveying device is used for conveying gathered and harvested apocynum venetum to the knotting device, and the conveying pressure of the conveying device at the header can be adjusted through a variable-diameter rotating drum of a conveying belt. The height-adjustable stacked crop pressing plate device is used for applying pressure to apocynum venetum stalks stacked in front of a cab to prevent the apocynum venetum stalks from being blocked behind a header, and the height of the height-adjustable stacked crop pressing plate device can be manually adjusted to adapt to harvesting of different types of apocynum venetum; the walking device anti-blocking conveying system is installed at the bottom of the vehicle frame to prevent stalks from blocking the bottom of the reaper-binder. The plant passing rate of the hugging type apocynum venetum cutting and bundling harvester can be effectively increased, and blockage is prevented.

The invention discloses an oxygen separation device for a pressure swing adsorption system, and relates to the technical field of oxygen separation. The oxygen separation device for the pressure swing adsorption system comprises an oxygen separation tank; the central shaft is arranged in the oxygen separation tank in the axial direction of the oxygen separation tank and can rotate around the axis of the central shaft; the zeolite molecular sieves sleeve the outer side of the central shaft and are uniformly distributed along the axial direction of the central shaft; and the up-down transposition mechanism is arranged on the zeolite molecular sieve, can synchronously act along with the rotation of the central shaft, and is used for driving the zeolite particles to generate position alternation in the axial direction. By arranging the up-down transposition mechanism synchronously acting with the rotary drum, the zeolite particles are driven to continuously perform ordered position alternation in the axial direction, so that dynamic cyclic replacement of adsorption areas is realized, the zeolite particles at different positions alternately participate in the adsorption process, the load of each area is effectively balanced, and local premature failure is prevented.

The invention provides an erosion gully erosion volume measuring device, and relates to the technical field of water and soil loss monitoring equipment.The erosion gully erosion volume measuring device comprises a three-dimensional laser scanner, an installation flange is fixedly installed at the lower end of the three-dimensional laser scanner, a controller and an installation disc are fixedly installed at the upper end of the three-dimensional laser scanner, and first inner grooves are symmetrically formed in the side wall of the installation disc; a rotating drum is rotatably mounted in the two first inner grooves, circular grooves are uniformly formed in the upper end of the rotating drum at equal intervals, a first spring is fixedly mounted in each circular groove, a clamping block is fixedly mounted at the upper end of each first spring, and each clamping block is slidably mounted in the corresponding circular groove; a first window, a second window, a third window and a fourth window are evenly installed in the rotating drum at equal intervals, the four types of windows cover the typical environment of erosion gully measurement by 90% or above, the laser light transmittance in any scene is ensured, point cloud noise, data cavities or precision deviation caused by environment interference are reduced from the source, and the measurement accuracy is improved. And the reliability of measurement results is ensured.

The invention discloses a laser cutting device for automobile parts, and relates to the technical field of laser cutting. The device comprises a machine tool, and the upper end of the machine tool is fixedly connected with a waterproof tabletop; and the pipeline clamping mechanism comprises a supporting seat fixedly connected to the waterproof table top, a rotating cylinder used for a pipeline to penetrate through is rotationally installed on the supporting seat, an electric three-jaw chuck is fixedly connected to the end of the rotating cylinder, and a driving piece used for driving the rotating cylinder to rotate and a pushing piece used for driving the pipeline to move are installed on one side of the machine tool. The double-driving mode of rotation and translation is achieved through the electric three-jaw chuck and a double-end clamping structure abutting against the rolling wheel base, angle adjustment and telescopic movement of the laser cutting head can be achieved through the hinge base and the telescopic frame, hollow-out cutting and special-shaped cutting operation of the pipeline can be achieved in cooperation with the translation driving mode of the pipeline, and the working efficiency is improved. And the flexibility and functionality of the device are improved.

Provided are a multi-blade wind generator. The multi-blade wind generator relates to the technical field of wind power generation, and includes a bottom plate, where a bracket is installed at an upper end of the bottom plate, a working housing is installed at an upper end of the bracket, and a generator is arranged in a first working cavity inside the working housing, and a motor shaft of the generator is connected with a first rotating shaft through a speed-increasing and heat-dissipating mechanism; the first rotating shaft penetrates a front end of the working housing and is fixedly connected with a rotating drum, and the working housing is rotatably connected with the rotating drum, and a cavity is arranged in the rotating drum, and a motor is fixedly arranged in the cavity in the rotating drum, and the motor is fixedly connected with a first bevel gear.

The utility model discloses a paperboard crease processing device which comprises a working table, a crease mechanism arranged on the working table and a receiving mechanism arranged on one side of the crease mechanism, the crease mechanism comprises a bearing frame, a conveying roller and a rotating drum, the conveying roller and the rotating drum are arranged below the bearing frame, and a first motor used for driving the conveying roller and the rotating drum is fixed on the bearing frame. The receiving mechanism comprises two vertical supporting piles and a receiving table arranged between the two vertical supporting piles, a second motor is fixed to one of the vertical supporting piles, side grooves are formed in the opposite sides of the two vertical supporting piles, a screw rod and a guide rod are arranged in the two side grooves correspondingly, and the screw rod and the guide rod are arranged in the receiving table. The screw rod is fixedly connected with the output end of the second motor, and the two ends of the guide rod are fixedly connected with the vertical supporting piles. According to the paperboard crease processing device, automatic stacking of paperboards can be completed, it can be guaranteed that the stacked paperboards are kept in a tidy state, and meanwhile the trouble of manual paperboard arrangement and carrying is avoided.

The invention discloses a centrifugal machine for sludge dewatering, belongs to the technical field of sludge dewatering, and aims to solve the problems that when the centrifugal machine for sludge dewatering is used, sludge on the inner wall of a rotary drum can be gradually compacted to form a filter cake layer, particles in the filter cake layer easily form a bridging structure at an inlet of a through hole, and the sludge dewatering efficiency is affected. A controller is arranged on the outer wall of the supporting frame, a cylinder is arranged in the supporting frame, one side of the cylinder communicates with a drainage pipe, a first driving assembly is arranged in the cylinder, a dewatering assembly is arranged on one side of the first driving assembly, a second driving assembly is arranged in the cylinder and rotationally connected with the cylinder, and a sewage pumping assembly is arranged at the top of the supporting frame. According to the invention, dual blockage clearing of crushing blockages by the conical rod and purging by high-pressure gas is conveniently realized, shutdown disassembly is not needed, continuous smoothness of the water outlet hole is guaranteed, stable efficiency of centrifugal dewatering is maintained, and the dewatering effect is enhanced.

The present application relates to the field of plant pest control, and provides a plant pest control device. The plant pest control device comprises a liquid storage mechanism, a trapping mechanism and a dredging mechanism, wherein the trapping mechanism is connected with the liquid storage mechanism, and the dredging mechanism is fixedly connected above the liquid storage mechanism. When the device is used continuously, the mosquito corpses in the filter cartridge need to be recovered, the rotating drum is rotated, the sealing plate is slid in the clamping groove to the sliding groove, the mounting sleeve and the filter cartridge are disassembled, the residual mosquito corpses in the filter cartridge are pushed out, the overall disassembly steps are simple, only the mosquito corpses in the filter cartridge need to be squeezed out, the device can be used again, the squeezed mosquito corpses can be used as fertilizer, the difficulty of device maintenance is reduced, the protection of the external sealing shell can maximize the reduction of the damage of the internal equipment of the device, and the safety of the device during use is ensured.

The utility model relates to the technical field of food processing, and provides a stirring and mixing device for food ingredient processing, which comprises a supporting seat, the front end of the supporting seat is fixedly connected with a sliding rail, the surface of the sliding rail is slidably connected with a lifting seat, and the inner side of the supporting seat is fixedly provided with a lifting motor. The lifting motor is fixedly connected with a threaded rod through an output shaft of the lifting motor, the lifting seat is in threaded connection with the threaded rod, and a heat dissipation opening is formed in the top of the lifting seat. The stirring barrel can be driven to synchronously rotate through cooperation of two sets of sliding blocks and two sets of sliding grooves, meanwhile, the stirring barrel can be driven to repeatedly move downwards in the rotating process under cooperation of a rotating gear, a toothed bar, a hydraulic bin and other assemblies, and the stirring barrel repeatedly moves downwards while rotating to drive six sets of stirring blades to evenly stir raw materials in the batching barrel. And the layering condition is not easy to occur.

The invention provides a reinforced hardness removal device for a reclaimed water plant, and relates to the technical field of sewage treatment.The reinforced hardness removal device comprises a settling box, a square pipe fixedly communicated with the top of the settling box, a mixing box fixedly connected with the top end of the square pipe, a cleaning unit installed in the settling box, a pollution discharge unit installed on the lower portion of the settling box and a blocking and discharging component installed on the upper portion of the square pipe; a stirring unit is mounted in the mixing box; the cleaning unit comprises a driving cleaning part, a guide part and a telescopic part; the driving and cleaning part is used for pushing sediment at the bottom of the inner side of the sediment box to the blocking and discharging part; the guide part is used for providing a moving track for the driving cleaning part; according to the device, the electric cylinder drives the lifting frame to move and synchronously drives the mud pushing plate to move, the blocking plate to be opened and closed and the collecting rotary drum to rotate, automatic linkage of cleaning, discharging and feeding is achieved, manual operation is reduced, the treatment efficiency is improved, mixing, sedimentation and mud discharging are integrated on the same device, traditional split design is avoided, and the structure is more compact.

The piston sealing assembly for the reciprocating type oil-free labyrinth seal compressor comprises an air cylinder, a piston is arranged in the air cylinder, a rotating groove is formed in the outer side wall of the piston, a rotating mechanism is arranged in the rotating groove, and a piston is arranged in the rotating mechanism. And the rotating mechanism comprises a rotating cylinder, two push rods, two extension springs, two extrusion inclined blocks, two pushing springs, two stop blocks and two limiting inclined blocks, a plurality of fixing grooves are formed in the outer side wall of the rotating cylinder and the outer side wall of the piston, and a plurality of piston rings and supporting rings are fixed into the fixing grooves correspondingly. According to the piston sealing assembly for the reciprocating type oil-free labyrinth seal compressor, the multiple piston rings and the multiple supporting rings are arranged, cavity labyrinth seal is formed between the multiple piston rings and between the multiple supporting rings, in this way, non-contact seal is formed, mutual abrasion and cylinder rubbing are avoided, and the piston sealing assembly can adapt to long-period operation of the compressor; and faults which cannot be repaired in a long period are eliminated.

A washing machine includes: a cabinet having an inlet disposed on an upper part thereof; a tub disposed inside the cabinet and configured to accommodate washing water; a rotating drum rotatably disposed inside the tub; a pulsator rotatably disposed at an inner bottom of the rotating drum; a driving device configured to drive the rotating drum and the pulsator; and at least one processor, comprising processing circuitry, individually and / or collectively, configured to cause the washing machine to perform washing and dehydration processes.

The application discloses a kind of high insulating safety shoes and processing injection mold, it is related to safety shoes processing technical field, including processing device, the processing device is set on processing groove, several groups of rotating rods are rotatably connected on the inside, rotating drum is fixedly installed on the rotating rod, transmission belt is sleeved on the rotating drum, limiting slot is set on the transmission belt, one end of one of the rotating rod extends to the outside of the processing device, one end of the rotating rod is fixedly connected with the output end of driving motor, the driving motor is fixedly installed on first mounting frame, the first mounting frame is fixedly installed on the processing device.The application has reasonable structure, realizes the raw material of processing is poured into the inside of casting mold groove, then the lower mold base is transmitted to the baffle between by the operation of driving motor, the scraper moves by the operation of servo motor, so that the excess raw material on the casting mold groove is scraped by the scraper, so that the processing box is processed.

This invention relates to the field of wastewater treatment technology and discloses a textile wastewater treatment device, comprising: a treatment tank body, a stirring mechanism, and a treatment agent addition mechanism; the treatment agent addition mechanism is installed at the water inlet end of the treatment tank body, and includes an inlet cylinder, an inlet pipe, a treatment agent delivery pipe, a rotating drum, a rotation drive assembly, a stirring assembly, and several partition plates. The treatment agent addition mechanism of this invention adopts a modular cavity isolation design: a detachable rotating drum pretreatment module is integrated at the inlet end, and four radial sliding partition plates dynamically divide the cavity into independent pretreatment units. Each unit sequentially completes the static water inlet, quantitative agent locking, closed stirring, and directional drainage process, eliminating dynamic interference of water flow through physical isolation.

The invention relates to the technical field of energy-saving heat exchange devices, in particular to an energy-saving jacketed heat exchanger for resorcinol production. Comprising an outer shell, a heat conduction shell is fixedly connected into the outer shell, the heat conduction shell and the outer shell are matched to form a steam cavity, the outer shell is provided with an air inlet and an air outlet which are both communicated with the steam cavity, and a water outlet communicated with the steam cavity is formed in the lower side of the outer shell. A steam cavity is formed in the outer shell, a liquid separation shell is installed on the upper side in the outer shell through a supporting plate, the outer shell is fixedly connected with a liquid inlet pipe communicating with the liquid separation shell, the outer shell is slidably and rotationally connected with a rotary drum located in the steam cavity, and a spiral flow guide plate is arranged on the inner wall of the rotary drum. Steam rises along a spiral path through the flow guide plate, sufficient heat exchange between the steam and liquid medicine is guaranteed, the contact time of the steam and the liquid medicine is prolonged, the steam is prevented from being discharged before heat exchange is completed, and therefore the purpose of saving energy is achieved.

The utility model provides a soil sampling device for detecting a plant planting area. The soil sampling device comprises a positioning plate, a rotary drum arranged on the lower side of the positioning plate, a plurality of groups of sliding parts and a synchronous driving assembly, the rotary drum is rotationally connected with the positioning plate and is in transmission connection with a first rotation driving component; a plurality of through holes are formed in the rotary drum, the plurality of groups of sliding parts are inserted into the plurality of through holes in a one-to-one correspondence manner, each group of sliding parts comprises two sliding parts which are arranged at an interval along the axial direction of the through hole, and each sliding part is detachably connected with a sampling cup which is opened towards the circumferential direction of the rotary drum; the synchronous driving assembly is arranged on the rotary drum and is in transmission connection with the multiple groups of sliding parts, so that the two corresponding sliding parts move towards each other or back to back, and the sampling cups extend out of the rotary drum or retract into the rotary drum. According to the soil sampling device provided by the invention, multiple groups of soil samples at different depths can be collected at a time through the multiple sampling cups, so that the accuracy of soil sample collection is ensured, and the reliability of subsequent soil detection results is further ensured.

The application provides a steel wire pointing machine capable of adjusting the pointing diameter and the pointing angle, and belongs to the field of steel wire processing. The steel wire pointing machine comprises a feeding device and a pointing device arranged in line, a base supporting the pointing device, and a transmission assembly driving the pointing device to rotate; the pointing device comprises a rotating drum, a sliding disc sleeved in the rear half cavity of the rotating drum, at least three groups of roller shafts arranged in the circumferential array mode in the inner cavity of the rotating drum, wherein the axes of the roller shafts are parallel to the axis of the rotating drum, an adjusting component for adjusting the spacing between the roller shafts, and a second driving component driving the sliding disc to slide axially in the inner cavity of the rotating drum and adjusting the pointing angle. The application can adjust the pointing diameter and the pointing angle without replacing different types of rollers, meets the different pointing requirements of steel wires with large diameter differences, avoids the complicated roller replacement, and has the advantages of wide application range, strong universality, high pointing efficiency, high pointing quality, convenient use, time and labor saving, and the like.

The invention provides a grinding device and method for a valve body sealing face, and belongs to the technical field of valve body grinding. The grinding device for the valve body sealing face comprises a lifting table, a first stepping motor is arranged on the lifting table, and a grinding assembly is installed at the output end of the first stepping motor through a pressure sensor; the two rough grinding heads conduct rough grinding on the top sealing face of the valve body and conduct rough grinding on the inner and outer diameter sealing faces of the valve body, the two fine grinding heads conduct fine grinding on the top sealing face of the valve body and conduct fine grinding on the inner and outer diameter sealing faces of the valve body, and the polishing head conducts polishing treatment on the top sealing face of the valve body and conducts fine grinding on the inner and outer diameter sealing faces of the valve body. And the inner diameter sealing surface of the valve body is polished, so that the rough grinding head, the fine grinding head or the polishing head is close to the rotary drum in the inclined direction, the grinding outer diameter in the horizontal direction is reduced, the grinding position in the vertical direction is moved upwards, the grinding head is prevented from excessively applying pressure to grind, and the applied pressure between the grinding head and the polishing head adapts to each other.

The invention relates to the technical field of medicinal material cleaning, in particular to traditional Chinese medicinal material cleaning and drying integrated equipment with a sterilization function, which comprises a box body, a cleaning mechanism is arranged in the box body, the cleaning mechanism comprises a rotary drum rotationally arranged on the side wall of the box body, a sliding rod is slidably arranged in the rotary drum, a roller is fixed at one end of the sliding rod, and a water tank is arranged in the rotary drum. A rotating shaft driven by a motor is installed on the side wall of the box body, a transmission assembly is arranged between the rotating drum and the rotating shaft, an eccentric wheel is fixed to one end of the rotating shaft, one side of the rotating drum is communicated with a sleeve, one side of the eccentric wheel is sleeved with a groove plate, and a threaded rod penetrating into the sleeve is installed at the bottom end of the groove plate; by simulating the action of combining rolling and rubbing in traditional manual cleaning, medicinal materials are evenly stirred in the roller, then the capacity of cleaning soil and impurities on the surfaces of the medicinal materials is improved through the dynamic cleaning mode, and it is ensured that no dead corner exists in cleaning.

The application discloses a processing method of a Magnus effect rotating drum wind sail structure integration, which comprises the following steps: winding a filamentous composite material on a mold as a bottom layer of a product; winding a structural core material on the bottom layer after the winding of the bottom layer is completed; winding the filamentous composite material on the structural core material as an outer layer of the product after the winding of the structural core material is completed; sealing the bottom layer and the outer layer and the structural core material therebetween, vacuumizing, and performing a resin flow guiding process after the winding is completed; guiding liquid resin to the bottom layer and the outer layer and the structural core material therebetween through a hose; solidifying the resin and performing segmented demolding after the resin is solidified. On the basis of the winding process adopting a sandwich structure, the application additionally adds a resin flow guiding process, integrates the resin for the winding formed sandwich structure, integrates the structure of the rotating drum wind sail, and has the advantages of high product strength, good quality, low processing difficulty and low comprehensive cost.

The utility model discloses a heating device for accurate temperature control in a laminating process, which belongs to the technical field of laminating equipment and comprises an upper roller, a through groove is arranged at the edge of the inner side wall of the upper roller, a condenser pipe is fixedly connected in the through groove, and an adjusting component is rotatably connected to the middle of the inner side wall of the upper roller; through the adjusting assembly, the dislocation plate, the second thermal insulation layer and the condensation pipe, heat generated by the heating piece is isolated in the internal space to guarantee continuous and stable supply of the heat, then heat reaching the outer wall of the upper roller is controlled through a channel generated by dislocation of the dislocation plate and the rotary drum, the heat is prevented from being directly transmitted to the surface of the upper roller, and the service life of the upper roller is prolonged. According to the film laminating machine, the risk of film material deformation or damage caused by overheating is reduced, the temperature reduction speed can be increased through the condensation pipe, the temperature control efficiency is improved, efficient temperature control is achieved, meanwhile, heat is evenly dissipated from the middle to the periphery, and the temperature in the film laminating process can be more uniform.

This invention provides a slow-release feed device for marine aquaculture, relating to the field of marine aquaculture technology. It includes a rotating drum, a drum cover, and a fixed shaft. A rotating impeller is mounted on the rotating drum, which is connected to the drum cover to form a cylindrical space. The fixed shaft passes through the central axis of the rotating drum and drum cover and is rotatably connected to them. A cake holder, a feed cake, and a cake brush are installed within the cylindrical space. The cake holder is fixedly connected to the fixed shaft, and the feed cake is mounted and fixed on the cake holder. The cake brush rotates synchronously with the rotating drum, brushing the surface of the feed cake to accelerate slow release. Utilizing ocean currents or the up-and-down movement of seawater, the rotating impeller drives the rotating drum to rotate, which in turn drives the cake brush to continuously brush the slow-release flocculated layer formed on the surface of the feed cake. This effectively accelerates the diffusion and release of feed particles, solving the problem of excessively long natural slow-release time for feed cakes and their inability to pass through a 150-mesh or finer silk sieve, thus meeting the needs of aquaculture such as oyster farming.

To provide a high-speed, low-noise, pressure-boosting air duct structure that can effectively rectify airflow, reduce the generation of turbulence, and reduce wind resistance and energy loss, thereby effectively improving the blowing wind speed and blowing distance and reducing operating noise. [Solution] The high-speed, low-noise, pressure-boosting air duct structure includes a motor frame with an accommodation cavity, an air duct housing, a fan, multiple blades (40), and a wind net. An air duct is provided within the air duct housing. The fan includes a motor (31) and a rotating drum (32). The wind net includes a fixed drum (51) and multiple guide vanes. The ends of the multiple guide vanes near the second end evenly surround the fixed drum diagonally, and each guide vane is bent into an arcuate shape along the axial direction of the fixed drum from the side near the second end to the side near the first end. By bending each guide vane into an arcuate shape along the axial direction of the fixed drum, an arcuate wind guide structure is formed.

The utility model discloses a novel wall-mounted welding fume filtering device, relates to the technical field of filtering devices, and aims to solve the technical problems that the current wall-mounted filtering device is inconvenient to clean and maintain and is easy to block to influence the filtering quality, the novel wall-mounted welding fume filtering device comprises a frame body and a rotary drum, and the rear end of the frame body is provided with an assembly frame and a built-in piece; a fan is arranged at the upper end of the frame body, a bottom cylinder is arranged at the lower end of the frame body, a filter cylinder is installed in the bottom cylinder, the rotating cylinder is rotatably installed on the inner side of the frame body through a bearing, a built-in cylinder is installed in the rotating cylinder, side grooves are formed in the lower end of the outer side of the built-in cylinder in an annular array mode, and a connecting pipe is arranged at the front end of the rotating cylinder in a penetrating mode; and a dust suction pipe is mounted at the outer end of the connecting pipe. The filter cartridge cleaning device has the advantages that the filter cartridge cleaning function is convenient, the cleaning difficulty is reduced, and the filtering quality is ensured.

The invention relates to the technical field of pavement maintenance, in particular to a portable pavement crack sealing hot patching device which comprises a movable frame, a support is fixedly connected to the movable frame, a storage assembly is arranged on the support and comprises a threaded column, the threaded column is rotatably connected to the support, a rotating cylinder is fixedly connected to the threaded column, and the rotating cylinder is fixedly connected to the movable frame. A plurality of placement grooves are formed in the rotary drum, sliding blocks are slidably connected to the interiors of the placement grooves, injectors are fixedly connected to the sliding blocks, a switching assembly is further arranged on the support and comprises sliding sleeves and first springs, the sliding sleeves are slidably connected to the interiors of the placement grooves correspondingly, and the first springs are fixedly connected to the sliding sleeves; the multiple first springs are fixedly connected between the multiple sliding sleeves and the inner wall of the containing groove. According to the pavement crack repairing device, injectors filled with different repairing materials can be selected according to different pavement materials, then the injectors are drilled into the ground to complete injection repairing of pavement cracks, the injectors can be cleaned after being used, and the situation that follow-up use of the injectors is affected by adhered soil and dirt is prevented.