356 results about "Dust collection system" patented technology

This brake dust collection system (10) is provided with: a cover body (11) for covering a brake device (9) provided at an end of an axle (7) of a vehicle (S); a suction device (12) that sucks brake dust generated inside the cover body (11) through a suction path (14) from an opening (110) provided in the cover body (11); a control device (17) that operates the suction device (12) in a state in which the brake device (9) brakes a wheel (8) attached to an end of the axle (7) while the vehicle (S) is traveling; and a collection device (15) that is provided between the opening (110) and the suction device (12) in the suction path (14) and collects the brake dust sucked by the suction device (12).

A dustless compound sliding miter saw with a built-in dust collection system is disclosed. The dustless compound sliding miter saw uses an extraction turbine to create a vacuum region at the end of the blade exist from the cut wood piecework, the blade housing has an external extraction channel and an external suction tube to maximize the dust collection. A retractable dust guard is utilized to confine the sawdust in the vacuum region to further maximize the dust collection. The compound sliding miter saw also utilizes anti-dust blade guard and air flow guide fins to optimize the airflow and the dust extraction. The compound sliding miter saw has a rail system that slides the blade from front to back and extends the maximum cutting length. The compound sliding miter saw has a built-in beveling mechanism to tile the blade and cut down through the wood at an angle.

The invention provides a centralized dust control method and system for a driving working face, and the method comprises the steps: collecting actual measurement environment parameters of the driving working face in real time through a sensor, and carrying out the preprocessing of the actual measurement environment parameters, and obtaining the preprocessed actual measurement environment parameters; acquiring a target environment parameter of the driving working face, and determining an absolute value of an environment parameter difference value according to the target environment parameter and the preprocessed actually measured environment parameter; according to the absolute value of the environmental parameter difference value, an execution mechanism adjustment instruction value is determined through a PID control algorithm; and controlling the driving working face centralized dust control system based on the execution mechanism adjustment instruction value. Wherein the executing mechanism adjusting instruction value comprises the angle variation of a guide vane in the negative-pressure air duct body, the opening size variation of an air distributor in the negative-pressure air duct body and the rotating speed of a fan. According to the technical scheme provided by the invention, the safety and the environmental protection property of the tunneling operation are improved.

The invention discloses a linkage system of a roadway air distribution device and a dust removal device and a control method, and belongs to the technical field of safety and environmental protection of mine / tunnel construction. The system comprises a long-pressure air control system, a short air draft dust collection system and an intelligent control module, the long-pressure air control system forms an airflow air wall through a long-distance air distribution device to restrain dust diffusion, the short-air-draft dust collection system captures dust through a short-distance dust collection cover, and the intelligent control module dynamically adjusts operation parameters of the long-pressure air control system and the short-air-draft dust collection system based on parameters such as dust concentration and air speed. The control method comprises the stages of dust suppression, capture, weak wind area removal and intelligent adjustment, and efficient dust removal is achieved through airflow collaborative optimization and a self-adaptive control algorithm. The dust collecting rate can be increased by 50% or above, energy is comprehensively saved by 20% or above, potential safety hazards in weak wind areas are eliminated, and the device is suitable for dust-producing scenes such as driving working faces and belt conveying roadways and has the advantages of being efficient, safe, capable of saving energy and wide in applicability.

The invention relates to the technical field of dust treatment, in particular to coke screening building loading dust treatment equipment with a multi-stage dust suppression structure, which comprises a coke oven blanking shell, a conveying belt is mounted in the coke oven blanking shell, and a double-shaft servo motor for the conveying belt to work is mounted on the outer side of the coke oven blanking shell. A fixing plate is fixedly connected to the interior of the conveying belt through a driving roller, a driving block is fixedly connected to the external eccentric position of the fixing plate, a driving plate is slidably connected to the outer side of the fixing plate, and a sector gear is fixedly connected to the tail end of the driving plate. A swingable dry fog nozzle is arranged in a blanking shell of the coke oven to generate micron-sized dry fog particle condensed dust, and efficient suppression, directional collection and diffusion range control of dust are realized by combining multiple functions of a negative pressure dust collection system formed by airflow hedging and Bernoulli principles and a bottom telescopic shell and a dustproof plate; the working environment is obviously improved; the pollution is reduced.

The invention relates to a portable dust collector and a dust collection system. The portable dust collector comprises a dust collection cup device; the dust collection cup device comprises a cup body, a first dust collection cavity is formed in the cup body, a longitudinal center line extending in the longitudinal direction is limited by the cup body, and the cup body comprises a bottom; the filter screen is in a closed circular ring shape, the filter screen is located in the first dust collection cavity, the center line of the filter screen coincides with the longitudinal center line, and the filter screen limits one part of the boundary of the first dust collection cavity; the dust remover comprises a first scraping element which is tightly attached to the outer wall face of the filter screen, and the dust remover is configured to be capable of rotating around the longitudinal center line relative to the filter screen so as to wipe the outer wall face of the filter screen; and a rotation operation member disposed at the bottom and exposed; and the rotary operation component is configured to be in transmission arrangement with one of the filter screen and the ash remover. According to the scheme, the cleaning process of the filter screen is simplified, and the cleaning efficiency is improved.

The invention relates to the technical field of mixing and kneading in prebaked anode production, in particular to a dust collection system for production and processing of a mixing and kneading pot, which comprises a rack, a dust collection box, an exhaust pipe and a transmission assembly. A mixing and kneading pot is arranged on the rack, and a mixing and kneading mechanism is arranged in the mixing and kneading pot; the dust collection box is arranged on the rack, a cloth bag dust removal assembly and a blowing pipe are arranged in the dust collection box, an ash hopper is arranged at the bottom of the dust collection box, an ash discharge pipe is arranged at the bottom of the ash hopper and inserted into the mixing and kneading pot, a rotary drum is rotationally arranged in the ash discharge pipe, an ash receiving groove is formed in the rotary drum, and an air guide pipe communicating a dust removal area with the interior of the mixing and kneading pot is arranged on the dust collection box; the exhaust pipe is arranged on the dust collection box and communicated with the back flushing area, and a turbofan is rotationally arranged in the exhaust pipe; the transmission assembly is in transmission connection with the mixing and kneading mechanism, the rotary drum and the turbofan. The mixing and kneading pot and the dust collecting box are communicated in a circulating mode, dust generated in the discharging process is collected and reused, the raw material matching quality is improved, and meanwhile the working environment is optimized.

The invention relates to the related technical field of metal material laser cutting, in particular to a metal material laser cutting device for building construction, which comprises a cutting machine body, a cutting frame with a laser cutting head and a cutting bottom plate for bearing a metal plate, and an in-out lifting assembly for driving the cutting bottom plate to move is arranged in the cutting machine body. The in-out lifting assembly drives the cutting bottom plate to be lifted to the bottom of the laser cutting head, a slag discharging assembly is arranged at the position, located at the bottom of the laser cutting head, of the cutting bottom plate, and the in-out lifting assembly drives the cutting bottom plate to enter a swing cleaning assembly arranged in the cutting machine body. High-temperature slag and leftover materials generated by cutting are pushed to an external dust collection system in a concentrated mode, the swing cleaning assembly executes fan-shaped swing along the three-dimensional track of the cutting bottom plate, adhered residual slag is thoroughly stripped, it is guaranteed that no residue exists in gaps of cutting supporting strips, and the cooling cleaning assembly sprays gas to the surface of a metal plate to achieve cooling.

The invention discloses a welding device with a multi-angle adjusting function for flange production, and relates to the technical field of welding, the welding device comprises a base, a movable seat and a fixed seat are oppositely arranged at the two ends of the upper portion of the base, and a horizontal moving mechanism is arranged at the side end of the base; compared with an existing welding device, the angle adjusting mechanism is arranged so that multi-angle accurate adjustment of the welding gun can be achieved, it is guaranteed that a welding seam and the penetration reach the standard, meanwhile, the angle adjusting mechanism has the angle calibration and power-off automatic reset functions, and when accidental power failure occurs, a second electromagnet is automatically closed; the compression spring drives the rotating disc and the welding gun to reset to a non-working state perpendicular to the ground, the situation that a welding wire in the welding gun deviates from the center position of the welding gun due to gravity and other reasons is effectively avoided, and the welding quality during subsequent welding again is guaranteed. And the dual goals of efficiently collecting the smoke dust and reducing the energy consumption are achieved.

The invention relates to the field of power battery manufacturing equipment, in particular to a combined roller conveying device and method. The device comprises a roller conveying assembly, a movable guardrail, a differential pressure self-adaptive floating brush carrier and a telescopic dust collection system. The system constructs a friction-current mapping model and a width-flow resistance compensation model, quantifies the dust density and guides the negative pressure setting of the dust collection negative pressure system; the core is that a pure physical feedback loop is formed by a pneumatic diaphragm capsule and a dust collection cavity, and when reverse differential sweeping is executed, according to negative pressure fluctuation caused by flow resistance change caused by dust accumulation, brush contact pressure is automatically adjusted so as to achieve endogenous self-stabilization balance; through pneumatic sealing locking and differentiated cleaning strategies, the problem of efficient dust removal of the surface of the roller under the widening scene is effectively solved.

The invention relates to the technical field of aluminum bar cutting, and discloses an automatic cutting device for aluminum bar production. Comprising a base, a cutting cover installed on the base, a conveying roller, a cutting wheel, four supports, a control screen installed on the front side of the cutting cover, four clamping air cylinders installed on the four supports, two limiting pressing plates installed at the output ends of the four clamping air cylinders, a feeding clamping system installed in the cutting cover and a dust collection system. According to the automatic cutting device for aluminum row production, the flatness of the end of an aluminum row is detected in real time through the synergistic effect of a storage box and a pressure sensor, if numerical values are different, a clamping air cylinder is triggered to conduct automatic pressing, a cutting wheel is linked to accurately cut off uneven parts, manual pre-cutting is not needed, and the machining efficiency is improved; by arranging the monitoring sensor, the length of the remaining aluminum row is monitored in real time, cutting is automatically stopped when the length is smaller than a preset value, the empty cutting phenomenon is avoided, and equipment loss and energy waste are reduced.

The utility model discloses a whirlwind type dust collection system and cleaning robot, the dust collection system includes dust collection mouth, dust collection box, separator and negative pressure generator, its separator can form spiral wind current, utilize centrifugal force to separate garbage from the wind current and collect in the dust collection box, thus can replace the filter screen, reduce use cost.

A separator of the dust collection system comprises an inner cavity, a spiral air duct, a separation opening, an air inlet and an air outlet, the spiral air duct is arranged at one end of the inner cavity, the separation opening is arranged at the other end of the inner cavity, the starting end of the spiral air duct is communicated with the air inlet, the tail end of the spiral air duct is communicated with the inner cavity, and the air outlet is communicated with the inner cavity; the separator further comprises an acceleration guide surface; the acceleration guide surface can accelerate the flow speed of the spiral air flow; the dust suction port is connected with the air inlet; the dust collection box is connected with the separation port; and the negative pressure generator is connected with the air outlet. The spiral air duct of the separator can form spiral air flow, and the acceleration guide surface can accelerate the flow speed of the spiral air flow, so that the garbage obtains larger centrifugal force, the garbage is separated more quickly and fully, and the garbage separation effect is improved.

To efficiently collect fine particles included in a gas.SOLUTION: A dust collection system includes: a flow path route through which a gas flows; a droplet supply section for supplying droplets to the flow path route; an electrostatic agglomeration unit that is arranged in the flow path route downstream from the position at which droplets are supplied, forms an electric field in the flow path of the gas, electrostatically charges the droplets and fine particles included in the gas, and causes the fine particles and the droplets to collide (agglomerate); and a dust collection section that is arranged in the flow path route downstream from the electrostatic agglomeration unit and collects the droplets and fine particles.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of zeolite molecular sieve production, in particular to a zeolite molecular sieve feeding and conveying device which comprises a base, a first support and a second support are arranged at the top of the base and jointly connected with a conveying assembly, and the conveying assembly comprises a conveying pipe. A dustproof feeding part is arranged at the position, close to the bottom end, of the outer wall of the conveying pipe and comprises a feeding pipe communicated with the conveying pipe, a buffer box is arranged at the top end of the feeding pipe, a dust suction main pipe is arranged at the top of the buffer box, and a negative pressure dust remover is arranged at the position, close to the rear side, of the top of the base. According to the zeolite molecular sieve feeding and conveying device, dissipation of floating dust in the feeding process can be effectively reduced by arranging the buffer box and the dust collection system in the dustproof feeding part, outward dissipation of the floating dust can be reduced through a rotating plate, meanwhile, through the design of the dust collection main pipe and the dust collection auxiliary pipe, the floating dust is sucked out in time, dissipation of the floating dust is further reduced, and the service life of the zeolite molecular sieve is prolonged. And the cleanness and safety of the production environment are ensured.

This application provides a cleaning door for a dust collection duct in a guide trough, comprising a dust collection duct body. A fixing frame is fixedly installed on one side surface of the dust collection duct body, and the fixing frame is connected to the dust collection duct body. A cleaning door body is provided on the upper side of the fixing frame, and a connecting mechanism is provided between the cleaning door body and the fixing frame. This application, by setting up a cleaning door body and a connecting mechanism, allows the cleaning door body to be installed at key locations in the duct, such as tees, bends, and butterfly valves—areas prone to dust accumulation. This enables operators to regularly clean the inside of the duct, effectively preventing the accumulation of wet dust and powder, thereby ensuring unobstructed duct flow and the continuous, efficient operation of the dust collection system. The connecting mechanism securely connects the cleaning door body to the duct body. Flexible and reliable connection methods, such as hinges, are used, ensuring that the cleaning door can be easily opened when needed and tightly closed after cleaning to prevent dust leakage.

The utility model relates to the technical field of hardware polishing workbenches, and discloses a posture-adjustable hardware polishing workbench which comprises a base, a rack is fixedly arranged on the base through bolts, two rotating bearing seats are fixedly arranged at the upper end of the rack through bolts, and the two rotating bearing seats are arranged in a bilateral symmetry mode. A rolling bearing seat is arranged on the base, a roll-over stand is arranged in the rolling bearing seat, the roll-over stand rotates under the action of the rolling bearing seat, a plurality of motors are fixedly arranged on the roll-over stand at intervals, and polishing discs used for polishing are fixedly arranged at the front ends of rotating shafts of the motors. According to the device, the polishing posture is conveniently adjusted, multi-station polishing can be carried out, in addition, polishing metal dust can be collected in time through the dust collection system, and the influence on the respiratory tract is reduced.

The utility model relates to gypsum dry grinder technical field, in general, relate to a dust collection formula gypsum dry grinder. The utility model provides such a dust collection formula gypsum dry grinder, including installation box, universal wheel, protective cover, protective rear shell, protective front shell and collection channel etc., the universal wheel is symmetrically installed to the left and right sides of installation box bottom, the protective cover is installed to installation box top rear side, the protective rear shell is fixedly connected to protective cover front end, the collection channel is connected and is communicated to have to installation box top front side, the collection channel top is connected and is communicated to have protective front shell. The utility model discloses by setting up the linkage dust collection system that is composed of fan blade, driving gear and driven gear, realizes the dust removal function of side polishing, and the dust produced in the polishing process is rapidly sucked into the collection channel, is concentrated in the collection frame after the filter screen filtration, effectively reduces the dust diffusion in the air, improves the working environment, and guarantees the health of operating personnel.

The present application relates to a vacuum cleaner having a floor wiping function, comprising: a base configured to selectively hold a cleaning cloth, the cleaning cloth being capable of contacting a floor to be cleaned when held on the base; the clamping device is arranged on the base and located on a pair of opposite side edge parts which are constructed to be used for keeping the cleaning cloth on the base in a releasable manner; a push rod assembly; the vacuum dust collection system comprises a suction nozzle, and the suction nozzle is arranged on the base and constructed to be kept at a dust collection position in a releasable mode; the trigger part is movably arranged on the push rod assembly among an initial position, a first position and a second position; the trigger part is in transmission connection with the suction nozzle and the clamp at the same time, so that the suction nozzle can be released from the dust collection position in response to the action that the trigger part moves from the initial position to the first position; and the gripper can release a pair of opposite side edge parts of the cleaning cloth in response to the action of the trigger part moving from the first position to the second position.

A pulverizer may have such features as a drum having a top and bottom, a rotating shaft extending vertically in the drum having radially extending arms that create flow currents within the pulverizer to size reduce a material, and a dust collection system coupled to the outlet for extracting air and dust from the size reduced material. The pulverizer may have an ability to detect wrapping as well as possibly deter wrapping. A processor may also adjust the speed of rotation of the arms within the pulverizer and / or the speed of feed of input for various considerations. In fact the rotation direction may be reversed for at least brief periods of time in an effort to remove wrapped material. Vibration may also be sensed and efforts to prevent damage may be instigated by a processor.

The invention discloses a tunneling working face partition ventilation device and a partition ventilation method thereof, and belongs to the technical field of underground tunneling engineering.The tunneling working face partition ventilation device comprises a tunneling machine body, an air inducing system and an air distributing system are arranged on the tunneling machine body, the air inducing system comprises a roadway air duct, the roadway air duct is connected with a telescopic air duct, and the telescopic air duct is connected with the tunneling machine body. The telescopic air duct is connected with the connecting hose; the air distribution system comprises an air flow tee joint and an air distribution box, one end of the air flow tee joint is connected with the connecting hose, the other end of the air flow tee joint is connected with the air distribution box, and the bottom of the air distribution box is connected with a dust collection system. The technical problems that an existing ventilation device is fixed in ventilation area and poor in ventilation effect are solved.

The utility model relates to a following type dust collection system which comprises a horizontally-arranged main beam, vertical plates are correspondingly arranged at the two ends of the bottom of the main beam, an auxiliary beam parallel to the main beam is arranged between the vertical plates on the two sides, the two ends of the auxiliary beam are fixedly connected with the vertical plates on the two sides respectively, a guide rail is arranged on the top of the auxiliary beam in the length direction of the auxiliary beam, and a dust collection box is connected to the guide rail in a sliding mode. Two fixed pulleys are vertically arranged on each vertical plate at an interval, the four fixed pulleys are located on the same vertical plane and located at the four corners of the same rectangle respectively, a transmission belt is wound among the four fixed pulleys, a synchronous transmission belt is further wound between the two fixed pulleys located on the lower portion, and the top of the synchronous transmission belt is fixedly connected with a dust suction box. The dust collection box can move along with dust generation points, dust collection nearby is facilitated, and the dust collection effect is improved.

The utility model discloses a bonding device for lining paper production equipment, which comprises a base, and the top of the base is fixedly connected with a support frame. Through cooperation of the base, the supporting frame and the winding roller, the winding roller is convenient to replace, lining paper is convenient to wind, production efficiency is improved, dust and other impurities on the lining paper can be sucked away in time before the bonding process through a dust suction system composed of the portal frame, the dust collector, the flow divider, the dust suction head and the dust collection box, and the bonding quality of the lining paper is improved. According to the lining paper gluing device, impurities are prevented from affecting the gluing effect, the gluing quality is improved, then a bearing frame, a bearing plate, a lifting groove, a lead screw, a lifting block, a sliding block, a rotating shaft and a gluing roller are matched, the lead screw is driven by a lifting motor to enable the gluing roller to ascend and descend, and the lining paper gluing device can adapt to lining paper of different thicknesses; glue pumped out by the glue pump in the liquid storage tank can be uniformly coated on lining paper, and the bonding effect is ensured.

The application relates to an aluminum bar continuous casting equipment and a casting process thereof, and relates to the technical field of continuous casting equipment.The aluminum bar continuous casting equipment comprises a heating system, a dust collection system, a raw material input system, a rack, a forming system, a pouring system and a separation system, the heating system, the dust collection system and the raw material input system are installed on the rack, the conveying direction of the raw material input system is directed to the heating system, the pouring system is communicated with the heating system, the forming system comprises two rotary forming devices, a material passing channel is formed between the rotary forming devices, both ends of one of the rotary forming devices are provided with baffles, the separation system is arranged between the two rotary forming devices, the separation system comprises a separation rack and a plurality of separation plates, both ends of the separation rack abut against the baffles, the separation plates are slidably installed on the separation rack, the sliding direction of the separation plates is parallel to the rotary axis direction of the rotary forming devices, the separation plates are respectively attached to the rotary forming devices, and the separation plates are directed to the material passing channel, so that the size of the aluminum bar material can be conveniently adjusted.

The invention discloses a smoke dust collecting system of a coke receiving and quenching car, and belongs to the technical field of coke oven equipment, the collecting system comprises a platform trailer, a dust remover, a conveying pipeline, a movable platform and a dust collecting hood, the platform trailer is connected to the rear side of a tractor, the dust remover is installed on the platform trailer, and the conveying pipeline is connected with the movable platform. The movable platform is arranged above the coke receiving hopper and the pull rod, the dust collecting cover is mounted on the movable platform and moves on the movable platform, and the two ends of the conveying pipeline are communicated with the dust remover and the dust collecting cover respectively. Through the arrangement of the dust collection cover, dust can be adsorbed in the coke receiving and transporting process, the situation that dust escapes into air and pollutes the environment is avoided, through the arrangement of the movable platform, the dust collection cover has the capacity of moving on the horizontal plane, so that the dust collection cover can be close to a furnace opening, and the dust adsorption capacity of the dust collection cover is improved; meanwhile, when the coke receiving hopper is overturned, the dust collecting cover can be far away from the upper part of the coke receiving hopper, so that interference is avoided.

The utility model relates to the technical field of pulverizer return air dust collection, and discloses a pulverizer return air dust collection system, which comprises a pulverizer, a cyclone dust collector, an air return pipe and an exhaust cloth bag, the top of the cyclone dust collector is respectively connected with the air return pipe and the dust collection cloth bag through a three-way pipe, the side part of the cyclone dust collector is provided with an air outlet pipe, and the air outlet pipe is connected with the dust collection cloth bag through a three-way pipe. And the other end of the air return pipe and the other end of the air outlet pipe are communicated to the inner cavity of the crusher. Due to the fact that the air return pipe is additionally arranged on the top of the cyclone dust collector, most of air carrying micro dust can return to a cabin of the pulverizer again, a very small amount of air is exhausted through the air exhaust cloth bag, and due to the fact that the air return device is additionally arranged, the air pressure of the air exhaust cloth bag is very small (close to the atmospheric pressure), the dust overflow proportion is very small, and the dust is prevented from falling off. Therefore, the problems that in the prior art, dust is prone to blocking gaps of a cloth bag, the ventilation rate is reduced, finer dust penetrates out of the cloth bag, and the respiratory system of people is affected are effectively solved.

This invention relates to the field of flexographic printing plate-making technology, specifically to a printing plate engraving device and method. The device includes a base, a vacuum adsorption worktable, a gantry frame, an engraving head assembly, and an anti-clogging mechanism. When cleaning is required, the drive assembly rotates the limiting shaft, causing the threaded rod to extend or retract via threaded transmission. This pushes the mounting base and dust collection hood to reciprocate on the upper surface of the vacuum adsorption worktable, simultaneously pushing the mounting arm to reciprocate along a translational track. This activates the external negative pressure dust collection system, allowing the dust collection hood to thoroughly suction the upper surface of the vacuum adsorption worktable, sucking in and collecting resin debris clogged in the adsorption holes and scattered on the surface. This technical solution actively removes debris from the vacuum adsorption worktable, restoring the adsorption holes to unobstructed flow, thereby maintaining a uniform distribution of adsorption force, preventing localized warping of the plate, and ensuring consistent micro-dot engraving depth.

The invention relates to the technical field of laser cutting, in particular to an intelligent laser cutting device and method for sunshade sheet metal production, which comprises a machine tool and a machine head for laser cutting of sheet metal, and further comprises a dynamic support system comprising a plurality of transverse seats arranged in the machine tool, a plurality of transverse seats are arranged on the machine tool, supporting heads capable of supporting a metal plate are arranged at the tops of the transverse seats, fine adjustment assemblies for adjusting the heights of the supporting heads are arranged at the bottoms of the supporting heads, the tracking dust collection system comprises an air extracting pump arranged at one end of the machine tool, and air extracting through grooves communicating with the air extracting pump are formed in the transverse seats; the cooling and heat suppression system comprises a gas transmission shell arranged on the outer surface of the supporting head, the top of the gas transmission shell communicates with a plurality of cooling nozzles, an exhaust assembly in linkage operation with the dust collection assembly is arranged in the gas transmission shell, and the cooling nozzles communicate with the exhaust assembly. The exhaust assembly can exhaust gas through the cooling nozzle.

According to the negative-pressure porous dust collector for the dust collection hopper bin, a negative-pressure dust collection pipe with negative-pressure dust collection holes is additionally arranged in the dust collection hopper bin, dust collected in the dust collection hopper bin enters the negative-pressure dust collection pipe through the negative-pressure dust collection holes, and finally is recycled to a dust collection system through a negative-pressure dust collection header pipe. The head end part of the negative-pressure dust collecting pipe is inserted into the bottom plate of the adjacent dust collecting hopper bin, so that the material dust recycling efficiency of the middle part and the tail end of the dust collecting hopper bin is improved by multiple times, and the problem that the material dust outside 100mm and the material dust at the tail end need to be pushed to be within 100mm by virtue of external force, and the dust collection and recycling energy is poor is effectively solved; and the material dust of the negative pressure dust collection funnel can be completely recovered without depending on external force, so that the problems of environmental pollution and the like caused by the dust are solved, and the practicability of the negative pressure dust collection funnel is greatly improved.