Abstract: An air filtration system for use in capturing fugitive dust in industrial sweeping operations includes a hopper having internal structure for causing change in the direction of flow of suction air which enters the hopper along with debris collected during an industrial sweeping operation. A plurality of filters is disposed within the hopper for filtering the suction air, each one of the plurality of filters having filter media therein which can be repeatedly purged for cleaning and continuous reuse thereof. Structure is included for providing repeated purging blasts of air to the plurality of filters, and structure is associated with each one of the plurality of filters for causing the purging blasts of air to clean substantially the entire filter media of each one of the filters.

Abstract: A steam processing apparatus and method in which a plurality of separators are disposed along the length of a cylindrical drum having inlet means for receiving a mixture of liquid and vapor and outlet means for discharging the separated liquid and vapor. The mixture is discharged against a baffle after which the separated liquid is passed to the drum liquid outlet and the separated vapor is passed upwardly by natural buoyant forces to the drum vapor outlet. The separators are disposed in a plurality of rows--two to each side of the axis of the drum along the length thereof.

Abstract: Oil separation for a horizontal refrigeration screw compressor is achieved in a series of steps which achieves nearly oil-free refrigerant gas. The refrigerant is discharged from the compressor into a generally cylindrical shell which is divided into three chambers. A generally horizontal, but slightly tilted, divider plate unequally divides the cylindrical shell into two chambers for the greater portion of the cylindrical shell. A cylindrical chamber at the end of the cylindrical shell provides fluid communication between the other two chambers. The compressor discharge is located in the lower and larger chamber which is a segment of a circle portion which also contains the oil sump. A discharge deflector turns the compressor discharge flow at least 90.degree., but as much as 135.degree., and causes it to impact upon the lower surface of the divider plate and depositing oil thereon. The flow striking the divider plate is deflected 180.degree. and is caused to turn approximately 90.degree.

Abstract: A personal dust spectrometer for aerodynamically classifying and collecting sub-fractions of inspirable dust, has an entry which has an entry efficiency approximating that of the human head during inhalation, and a cascade impactor comprising a stack of stages each having a flat element and a peripheral wall and gas exit holes. A connector enables a gas sampling pump to be attached to draw air through the entry and through the cascade impactor. A filter is desirably used to collect the smallest dust particles. All the dust entering the device is collected and is measurable.

Abstract: A cyclone dust collector is comprised of a lower dust chamber (5) having a tangential air inlet (10) and an upper dust chamber (4) in combination with a suction device. A dividing plate separates the upper and lower dust chambers from one another. A communicating duct (2) is installed in the dividing plate (3) in such a manner to extend downward into the lower dust chamber (5), and a cyclone drum (15) is supported in such a manner to enclose the dust (2). A disk (17) is supported to vertically divide the inside of the drum (15) into a pair of upper and lower parts. The air introduced into the lower dust chamber (5) is caused to flow in a swirl in the cyclone drum (15), the dust particles in the air are separated by centrifugalization to be allowed to drop along the inside wall of the drum (15) and the separated dust particles fall onto the bottom of the cyclone drum (15) without being affected by the swirling flow.

Abstract: An exhaust filter for internal combustion engines enabling the gradual filtration of the exhaust gas to minimize pressure drop through the filter is provided. A second exhaust gas passageway within the filter gradually receives the exhaust gas from the first and primary exhaust gas passageway, and after filtration, the diverted exhaust gas gradually is returned to the primary passageway for discharge from the exhaust filter.

Abstract: The system for generating braking pressure, consisting of a pneumatic assistance servomotor (2) mounted so as to overhang on a master cylinder (1) which it actuates by a tubular pullrod component (14) in which extends the control pushrod (11) of the distribution valve (10), incorporates a pre-assembled unitary valve assembly (10) screwed to the end of the tubular pullrod component (14) so as to connect the latter to the movable piston wall (6) of the servomotor, the valve (10) being linked by a cylindrical flexible sealing component (50) to a central annular zone (19) of the front wall (4) of the servomotor casing which is closed by a labyrinth filtering structure (80) with draining means (86).

Abstract: The apparatus separates exhaust fumes of an internal combustion engine into gas, liquid, and solids and comprises a container having an internal wall for substantially reducing the velocity of fumes fed into the container and allows the liquid and solids to collect in the bottom thereof with the fumes then passing through a demister filter to further separate same. A liquid level sensor connects to the container and senses when a maximum level is reached. The sensor may be of a float type and also can control a spring loaded valve in the fumes inlet passageway and/or a gauge connected by vertically spaced passageways through the side of the container, the latter gauge also could include an audible or visible alarm. A valved outlet is attached to the container for forcing the collected liquid in the container therethrough by the pressure of the incoming fumes when a plate covers the gas outlet above the filter.

Abstract: A powder spray booth wherein the workpieces are moved through a coating se and coated by powder coming from an electrostatic spray gun at a spray opening. An aspiration blower is used for forcing the air coming in through the spray opening through a cyclone unit with a battery of cyclone separators and through a filter unit with a filter bag. The air is moved upwards along upwards sloping lines of flow to the aspiration duct, and the powder is moved downwardly under the effect of gravity. Only a part of the powder reaches the cyclone separators and is removed from them through airlocks. The part of the powder not separated in this way deposits in the filter space, a part of it only after cleaning the filter. This part of the powder is removed on opening an outlet door and is taken up on the screen of the powder car and then mixed with the powder from the cyclone separators or, by opening the outlet door, run into a space, where a second powder car may be placed.

Abstract: Disclosed is a wax condenser for separating wax from an entrainer gas (or sweep gas) which is introduced into a sintering furnace and then pumped out in order to remove the wax from the furnace. The condenser includes a hot chamber and a cold chamber. Wax is removed by the condenser in three ways. After the entrainer gas enters the hot chamber of the condenser from the sintering furnace, it will pass through a heated filter. The heated filter will capture a large percentage of the wax present in the entrainer gas. The entrainer gas passes from the heated filter through a flow-restricting aperture which is located in a barrier separating the hot chamber from the cold chamber. This flow restricting aperture causes a pressure drop across the barrier. When the entrainer gas passes through the aperture, an expansion of the entrainer gas takes place due to the drop in pressure associated with the passing of the entrainer gas through the flow restricting aperture.

Abstract: A device for separating liquid from liquid-containing compressed gas. The device comprises two tanks (1,4) one situated above the other. The lower tank (1) is provided with a compressed gas inlet (2) which is directed against a surface (3) of the tank to cause separation of the major part of the liquid. The upper tank (4) is provided with a shell (6) having an access opening (9) at its upper end. The gas flow enters the upper tank (4) through a conduit (12) and passes then through opening (9) and a zigzag-shaped channel formed by walls (10,3,14,15) in shell (6). The gas flow then passes through filter (5,16). Separation is performed in several steps by change of direction of the gas flow and by filtering. Positioning of the access opening (9) at the top allows considerable expansion of the liquid-gas mixture without contamination of the filter (5,16).

Abstract: An air filter assembly (10) is disclosed which includes a dirty air chamber (22) having an air inlet (20) and a plurality of clean air outlets (34). In fluid communication with each air outlet (34) in the dirty air chamber (22) is a pleated media filter element (32) positioned so as to be suspended in a cantilever manner at an acute angle with respect to a horizontal plane. A distribution space (33) for reducing entering air velocities is created by the inclined uppermost filter elements (32) and the horizontal plane of the top surface panel (16). The lowermost portion (25) of the dirty air chamber (22) provides a collection area for particulate matter removed from the filter elements. The lowermost portion (25) includes a sloping surface (24) constructed of a material which flexes in response to pressure increases within the chamber (22).

Abstract: A filter for removing airborne grease has spaced front and rear walls each with a series of transverse louvers extending into the interior of the filter and opening downwardly. A filter media of expanded metal sheets is sandwiched between the front and rear walls.

Abstract: A separator for removing oil or fat particles from waste air, more specifically from a catering kitchen, has a system of generally parallel rods normal to the direction of the waste air current. The rods are distributed across the full cross-section of the waste air in the duct, and turbulence is produced in the waste air when it passes the rods so that oil and fat is entrained on the rods.

Abstract: A separator for use in separating air-born rock material from air. The separator comprises a housing defining a generally horizontal air flow path with at least one set of spiral deflector bands within the housing extending across the flow path. Each band preferably comprises a twisted strip of material which is resilient, but the strip can also be made from rigid or flexible material.

Abstract: Apparatus for the separation and recovery of a solid product transported by a gas, wherein said apparatus comprises at least one filter cartridge made from a rigid porous material mounted in a sealed enclosure and defining in the latter a first filter chamber within the at least one cartridge and which communicates by its lower end with a tube for the collection of the separated solid product and a second chamber for the collection of the filtered gas outside the said at least one cartridge, the latter having two large-surface opposite porous walls maintained with an appropriate spacing by spacers fixed on the said walls and disposed in the filter chamber in such a way as to form deflectors, means for introducing the gas transporting the solid product to be separated into the said filter chamber and means for extracting the filtered gas from the collection chamber.

Abstract: A air cleaner, comprising a container through which an elongated inlet tube is arranged to pass through a separating means in the form of piled discs having passages between them, said inlet tube being arranged with an outlet opening inside the container, said container being divided by a perforated partition into an air chamber for contaminated air and a substance chamber, said partition serving as a primary separation means arranged to permit flow of substance or contaminant into the substance chamber under influence of pressure from the contaminated air within the air chamber, said air thereafter being passed through said passages between the discs and leaving the container at the top.

Abstract: An air dryer of a compressed air system includes a vertical cylindrical tank with a downwardly directed entry pipe therein having a terminal to form liquid droplets on the bottom thereof. The tank has a manual drain valve on the bottom. A baffle near the top finishes separating any liquid from the compressed air.

Abstract: Apparatus for filtering a gas stream including a common manifold to which, in use, gas to be filtered is passed, a plurality of gas outlets from said manifold, a plurality of particle separators adapted to remove particles from said gas stream prior to exiting from said gas outlets and wherein said particle separators are adapted to deliver particles separated from said gas stream to said manifold, and a particle outlet from said manifold.

Abstract: A discharge valve assembly for use in dust collection systems is disclosed. The valve assembly includes a conduit (160) and a rotatable valve member (162). A rod (192) is connected to the valve member (162). The conduit (160) is formed of an elastic material and has a generally circular cross section. The conduit (160) also has an inner diameter (164) in an unstretched condition. The valve member (162) has a generally circular cross section and an outer diameter (178) which is greater than the inner diameter (164). The rod (192) has an axis spaced from a line bisecting the valve member (162) and is connected to the valve member (162) for rotation of the valve member (162) between a closed and an open position. In one embodiment of the invention, a plurality of discharge valve assemblies are disposed below a number of dust separator mechanisms (60,92). A discharge valve assembly can also serve as a suction or vacuum breaking means (158) in a multiple-stage dust collector system.

Abstract: The disclosure concerns a separator for removing broken engine parts and other debris from the hot gases passing fro the exhaust manifold of an engine to the inlet of an associated turbocharger. The separator includes an annular separation chamber in which the gases are swirled by stationary vanes to effect centrifugal separation of the debris, and a cylindrical screen which filters the gases as they leave the separation chamber. The screen is mounted in cantilever fashion within the separator casing and carries, at its free end, the vanes and a deflector which directs inlet flow radially outward to the separation chamber. The vanes are freely mounted in slots formed in the screen, where they are held captive by the slot margins and the deflector, and the tips of the vanes are spaced radially from the surrounding casing of the separator.

Abstract: An accessory for use in a vacuum cleaner or a vacuum-cleaning conduit for collecting and holding liquid sucked up by the vacuum cleaner, comprising: a container having a reservoir for holding the liquid, a removable cover for said container and extending substantially horizontally thereover, means for dividing said container into said reservoir and a chamber above said reservoir and having a substantially horizontally extending plate, an inlet fitting connected to said cover for connecting the interior of sand reservoir to a hose leading to the suction nozzle of the vacuum cleaner or a vacuum cleaning conduit, said inlet fitting including a pipe extending vertically and having a lower end portion extending into said reservoir, an outlet fitting in said cover for connection to a hose leading to the body of the vacuum cleaner or vacuum-cleaning conduit and communicating with said chamber, at least one passage in said plate between said chamber and said reservoir, and a float-controlled valve including a float v

Abstract: A device for separating drops of liquid from a stream of gas or steam comprises a closed casing having a horizontal inlet and an outlet respectively having their openings in two compartments separated by a vertical grid, a deflecting nozzle in coaxial relation with the inlet and providing a slit leading to a gap external of the nozzle forming part of a first collecting chamber which communicates with a reservoir, a cusped inner shell cooperating with the nozzle coaxially and provided with a trailing edge forming a slit with an overlapping edge of a second collecting chamber which also communicates with the reservoir, and means for the fine separation of liquid known in the prior art which are placed between the vertical grid and the outlet.