A device, for trapping an item in an intake hose of a vacuum before the item reaches a collection bin of the vacuum, includes a body and a screen. The body has a chamber, an entrance, and an exit. The chamber is configured such that when the chamber is coupled to an intake hose of a vacuum and the vacuum draws fluid into the intake hose, the fluid flows through the chamber. The entrance is couplable with an intake hose of a vacuum and configured such that when fluid flows through the body's chamber, the fluid enters the chamber through the entrance. The exit is coupleable with the intake hose of a vacuum and configured such that when fluid flows through the body's chamber, the fluid leaves the chamber through the exit. The screen of the device is disposed inside the body's chamber, and sized and configured to allow fluid that the vacuum draws in to flow through the body's chamber while preventing large objects suspended in the fluid from flowing through the body's chamber.

A trap for use with a vacuum cleaner includes a trap body formed in a substantially cylindrical shape. The trap body includes a suction opening formed at one axial end to suck in a target to be trapped and an insertion opening formed at the other end to be inserted into a vacuum cleaner. An adhesive is provided on at least a portion of an inner surface of the trap body. The trap for use with a vacuum cleaner includes a net portion. The net portion blocks a plane orthogonal to an axial direction of the trap body. The net portion includes a net formed in at least a portion to transmit air sucked in through the suction opening. The trap body includes a protrusion formed on at least a portion in a circumferential direction of an outer surface thereof to protrude outward.

Provided is a suction and separation composite tube, and a suction cleaning machine and a harvesting machine using the same, which are highly cost effective and are capable of, with a relatively simple structure to keep the manufacturing costs low, separating items of relatively small specific gravity from items of relatively large specific gravity even if the output of a motor is set high, and thus reducing the likelihood of clogging or the like of sucked objects and effectively preventing damage to or breakage of a fan and a fan casing. The suction and separation composite tube includes a connecting tube portion, a suction tube portion, and a separation tube portion. The suction tube portion or the separation tube portion is integrally continuous with the connecting tube portion at a distal end thereof. The suction tube portion and the separation tube portion are combined together at an intermediate portion or proximal end portion thereof. Using the fact that the flow velocity of airflow involving sucked objects that have been sucked from a suction port decreases at a combining portion, the sucked objects are separated into items of relatively small specific gravity and items of relatively large specific gravity.

An electric vacuum cleaning apparatus includes a station and an electric vacuum cleaner connectable/disconnectable from the station. The electric vacuum cleaner includes: a coarse-dust collecting chamber that accumulates coarse dust separated with a first separator; a filter chamber that accumulates fine dust separated with a filter; a coarse-dust waste-outlet that discharges the coarse dust from the coarse-dust collecting chamber; a fine-dust waste-outlet adjacent to the coarse-dust waste-outlet and discharges the fine dust from the filter chamber; and a waste-outlet lid that opens/closes both the coarse-dust waste-outlet and fine-dust waste-outlet together. The station includes: a secondary dust container accumulating coarse dust to be discharged from a primary dust container through the coarse-dust waste-outlet port and fine dust to be discharged from the primary dust container through the fine-dust waste-outlet; and a secondary electromotive blower that applies negative pressure to the primary dust container to transfer the coarse and fine dust.

The present invention provides a leaf blower, which includes a machine head and an air inlet channel. The machine head communicates with the air inlet channel, and the machine head is internally provided with a fan blade and a motor driving the fan blade to rotate. A lower end of the machine head is connected to a leaf collection bag. A side of the air inlet channel is provided with an opening, the opening is provided with a collecting box, and an upper end and a lower end of the opening are respectively provided with a first baffle and a second baffle. The leaf blower can effectively solve a problem that in practical application, the leaf blower may be damaged by some high-hardness small stones sucked into the leaf blower.

A vacuum including a suction inlet and a suction source. The vacuum also includes a dirt cup in fluid communication with the suction inlet and the suction source. The dirt cup includes a first stage cyclonic separator and a dirt collection chamber. A housing of the dirt cup includes a first end, a second end, and a neck region between the first end and the second end. The housing has an outer dimension that decreases in a direction from the first end toward the neck region and an outer dimension that decreases in a direction from the second end toward the neck region. The dirt cup includes a shroud within the housing, and the shroud includes a flange that divides the housing at the neck region. The dirt collection chamber and at least a portion of the shroud are between the second end of the housing and the flange.

The present disclosure relates to a dust cup assembly and a handheld cleaner having the same, the dust cup assembly includes a casing having a central chamber, a dedusting chamber and a dust collecting chamber, wherein the central chamber is configured to have an upright columnar shape and comprises an air exhaust chamber and a mounting chamber in communication with each other in an up-and-down direction, the dedusting chamber is configured to have a closed annular cross section and surrounds the air exhaust chamber by one circle, the dust collecting chamber is located below the dedusting chamber, has a non-closed annular cross section and surrounds the mounting chamber by less than a circle; a negative pressure device, in which wherein at least a majority of the negative pressure device is provided in the mounting chamber and used to suck airflow from the environment into the casing; and a dedusting device provided in the dedusting chamber to remove dust from the sucked airflow.

A cleaning apparatus engageable with a vacuum source is provided. The vacuum source can be used to draw fluid through an interior space of a housing of the cleaning apparatus through an inlet tube so that debris entrained in the fluid collects in a debris collection zone upstream of a downstream opening in the inlet tube. Methods of using the cleaning apparatus are provided.

Methods and apparatus for debris separation generally comprise a vacuum hose attachment comprising a collar and an attachment body. The attachment body further comprises an external face, external face openings, nubs, valley, an internal baffle, and internal baffle openings. In some embodiments, the external face openings are arranged in a lattice pattern and separated by nubs in a first direction and valleys in a second direction. In some embodiments, the attachment body may further comprise handgrips. The present invention also includes a method for separating debris via a vacuum hose attachment.

A fan with airfoil blades is provided for a regenerative air vacuum street sweeper. The blades are formed using cut and pressed upper and lower panels which are welded at a forward edge to a rod to form the airfoil leading edge and welded at the rear edges to form the airfoil trailing edge. Pins extend laterally outwardly from the rod for mounting each blade in corresponding holes in the front and rear plates of the fan housing. The side edges of the blade are welded to the plates at a 9-11? angle of attack. The airfoil blades allow for reduced size, horse power, noise, and manufacturing and shipping costs.