A vacuum cleaner for use in cleaning very hot crematory ovens has a suction head mounted on side wheels, and connected to a central fitting which receives compressed air through a stiff metal air supply pipe. An expansion pipe extends upwardly from the central fitting and is tipped frontwardly. The compressed air passes through the central fitting which incorporates a vacuum eductor which draws air flow in from the vacuum head. The hot air discharges through a filter cap at the upper end of the expansion pipe which retains a filter assembly of multiple screens against the upper end of the expansion pipe. Dust and small particles pass through the filter assembly to be carried away by hot air up the crematory chimney. Larger particles are retained by the filter assembly, and may be discharged downwardly from the vacuum head into a receptacle when the input compressed air is discontinued.

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.

The present disclosure relates to a dust cup assembly and a handheld cleaner having the same, the dust cup assembly includes a casing including a cup body with an open top, and a cleaner cover disposed at a top of the cup body and capable of being opened and closed; a negative pressure device provided in the cup body and used to suck airflow from an environment into the casing; and a dedusting device provided in the cup body, located above the negative pressure device and withdrawable from the top of the cup body when the cleaner cover is opened.

A handheld cleaner is provided and includes a dust cup assembly, including: a casing, a negative pressure device disposed in the casing and configured to suck an airflow from an environment into the casing, and a dedusting device disposed in the casing and configured to remove dust from the sucked airflow; and a handle assembly, including: a handle casing disposed to the casing and having a holding portion for user handholding, and a power supply device disposed at a top of the holding portion, and/or in the holding portion, and/or at a position in the handle casing opposite to the holding portion and electrically connected to the negative pressure device.

A vacuum collection vehicle may include a chassis, a vacuum container supported by the chassis, a vacuum source in pneumatic connection with an interior of the vacuum container. A plurality of discharge conduits have a plurality of respective outlets at different locations within the interior of the vacuum container for discharging collected material into different collection receptacles. Inner collection receptacle supports support transmissive flexible and collapsible inner collection receptacles below the outlets. Outer collection receptacle supports support non-transmissive flexible and collapsible outer collection receptacles about and spaced from the transmissive flexible and collapsible inner collection receptacles.

A modular particle collection system includes a hollow lower member, a hollow upper member separably attached to the hollow lower member, a collection container separably attached to a longitudinal end of the hollow lower member opposite the hollow upper member, an inlet portion extending radially from the hollow lower member and configured to be fitted to a first portion of a vacuum system, a particulate filter, and an outlet portion extending radially outward from the hollow upper member and configured to be fitted to a second portion of vacuum system. Additional modular particle collection systems and a method of making a modular collection system are also disclosed.

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 vacuum cleaner for removal of items, such as cigarette butts or other debris, from a sandy surface with a minimal amount of sand contamination includes a receptacle positioned inside the vacuum, and a hose terminating in an angled nozzle to pick up items. One hose embodiment includes a transparent member so it can be monitored for clogging by the accumulated debris. The receptacle contains a plurality of openings sized to enable sand to be passed through the receptacle while debris is retained within it. Embodiments utilize different mechanisms to empty the vacuum and remove debris. A push button switch can be wired into the vacuum allowing for improved control of the vacuum, and increase battery life.

An envelope (10) for use with a vacuum cleaner, the envelope (10) comprising flexible material arranged to provide a fluid path there-through, and further comprising a coupling arranged to couple the envelope (10) to a structural member for in use maintaining the fluid path open by supporting the envelope (10) against external pressure, wherein the envelope (10) is arranged in use to isolate, from the fluid path, the structural member that supports the envelope (10).

A vacuum attachment for a vacuum tube of a vacuum for a non-destructive screening of an object and/or a living creature. The vacuum attachment includes a suction tube, a collection unit, and an adapter unit. The suction tube has a first end and a second end. The first end is arranged opposite to the second end. A suction opening is arranged at the first end. The collection unit for the non-destructive screening is arranged in the suction tube downstream of the suction opening in a suction direction. The collection unit has at least one opening for a flow of a suction air stream, and an air-permeable impact protection material arranged upstream of the at least one opening in the suction direction. The adapter unit is arranged at the second end of the suction tube. The adapter unit connects to the vacuum tube of the vacuum.