736 results about "Dust collection system" patented technology

An auxiliary dust collection system can be interposed between a sander or other dust producing tool and a vacuum source, e.g., shop vacuum. This auxiliary system has a cyclonic separator connected by a flexible hose to the tool and by another hose to the vacuum source. The cone of the separator is mounted onto the lid of a drum into which the dust precipitates. For a tool that has its own blower, the vacuum source can be omitted, and the air leaving the outlet duct of the separator can be filtered and returned to the ambient. A drop in silencer formed of a sleeve or tube of acoustic foam can be positioned into the inlet side of a filter cartridge following a cyclonic separator. The silencer absorbs a significant fraction of the process noise.

A dirt collecting system for a vacuum cleaner includes a dirt cup formed from a cylindrical sidewall having a disc shaped member separating the dirt cup into an upper portion and a lower portion. The dirty airstream flows past the disc shaped member from the upper portion to the lower portion through a small gap between the outer periphery of the disc shaped member and the sidewall of the dirt cup. The disc shaped member is supported on a centrally located conduit which has apertured walls located both above and below the disc shaped member. The apertured walls allows the airstream to flow into the conduit for further filtering or exiting the dirt cup. The apertured wall located above the disc shaped member improves sustained performance by enabling the airstream to continue to flow through the dirt cup as the lower portion of the dirt cup fills with large dirt particles and the apertured wall located beneath the disc shaped member becomes increasingly restricted. In the various embodiments of the invention, the airstream is directed through the conduit to a fine particle filter located in a compartment at the bottom of the dirt cup, at the top of the dirt cup or into filter sock located at the upper end of the dirt cup. Alternately, the fine particle filter may be located in a separate container located above or below the dirt container.

An accessory system, such as a dust collection system (40) of a hand held power tool, such as a drilling and/or hammering tool comprising, the tool, an accessory unit (40) comprising a separate motor for powering the unit and releasably mountable on the tool, and a battery pack (4). When the accessory unit is not required, the battery pack can be mounted directly on the tool for powering to tool and when the accessory unit is required the battery pack can be mounted on the accessory unit for powering the accessory unit and, when the accessory unit is mounted on the tool, for powering the tool via the accessory unit.

A chop saw, grinding wheel, or like apparatus is disclosed herein also incorporated to an easily portable dust collection system. In a preferred embodiment, a worktable is provided with a center slot for receiving a circular saw blade. A negative pressure and resulting air flow is provided at the center slot to capture particulate matter as a byproduct of cutting the workpiece. Side slots are also disclosed to assist in particulate collection. A unique filter chamber having a cylindrical filter is additionally provided to remove dust from air and discharge the filtered air at a lateral side of the apparatus. A filter cleaning knob is additionally disclosed to assist in cleaning the filter. Of the beneficial aspects of the chop saw with dust collection system is its portability being one integral unit and the dust filter being easily cleaned and maintained.

An air cleaner for removing air pollutants by a water spray type of dust collecting system, which includes a dust collecting part and an air and water separating part in the interior of an air duct, the dust collecting part composed of primary and secondary dust collectors by water spraying, each of which having a plurality of spraying nozzles layeredly arranged by predetermined intervals to be opposed at an angle of 30° from the top to bottom thereof, and a space dust collector by water spraying disposed in a space between the primary and secondary dust collectors by water spraying, such that the three-step air and water contact causes foreign materials such as dust, gases and so on to be absorbed, dissolved and settled, and the air and water separating part formed of a groove-engaged type and layeredly curved by six-step folding at an angle of 90° in consideration of air resistance, for passing only the air flowing from the dust collecting part and collecting water drops.

An improved energy-efficient vacuum system for machine shop dust, particulate matter, and the like. Blast gates, including large-diameter blast gates, control the flow of vacuum generated by a dust collector to individual machines that may or may not accommodate vacuum ductwork and the like. The blast gate has a rotating blade inside a chassis with a DC motor effectively using a slip clutch, an increased current feedback system, a biasing-spring assembly or otherwise to limit the rotation driving of the rotating blade. In one embodiment, the blast gate blade bears teeth about its perimeter. The DC motor engages the perimeter blade teeth with a gear. Greater mechanical advantage is achieved over the blast gate blade and less torque arises in contrast to a driving system located at the blade's central pivot point. Additionally, sensing apparatus or system calculation allow the dust collecting vacuum system to operate in an energy-efficient manner. By supplying only the vacuum needed to collect present dust, energy is saved in comparison with a dust collection system operating continuously at full capacity.

A portable dust collection system for a wood shop or other dust producing environment is employed with a sander, power saw, router or other dust-producing tool such as a woodworking tool. A movable platform has a vertical intake pipe supporting a head portion formed with a shroud. A centrifugal impeller drives the intake air stream plus any entrained particles into one or more cyclonic separators, which deposit the dust in a respective drum supported on the platform beneath the cyclone. The air inlet from the tool enters the vertical pipe at a point partway up the pipe, so that large particles drop to the bottom end of the pipe, where a clean-out door is provided. The exhaust or discharge air from the cyclonic separator(s) passes out through a filter cartridge to the ambient. A deflector plate prevents the dust from eddying back into the separator.

A dust collection system for portable sanding or grinding equipment employs a cyclone separator mounted directly on the tool or machine, with a dust outlet duct at the narrow lower end of the cyclone, and a cartridge air filter mounted on the top of the cyclone. The filter returns the air flow from the machine to the ambient air in the vicinity of the tool. The dust is concentrated in the cyclone, and a small volume air flow then moves the dust through an elongated flexible hose or duct to a remote dust collection station. An air pump at the remote dust collection station provides sufficient air flow to draw the small volume of air plus entrained dust from the tool-mounted cyclonic separator. A cyclonic separator at the remote station separates this dust from the air flow and deposits it in a collection tank or drum.

An auxiliary dust collection system can be interposed between a sander or other dust producing tool and a vacuum source, e.g., shop vacuum. A cyclonic separator is connected by a flexible hose to the tool and by another hose to the vacuum source. The cone of the separator is mounted onto the lid of a drum into which the dust precipitates. For a tool that has its own blower, the vacuum source can be omitted, and the air leaving the outlet duct of the separator can be filtered and returned to the ambient. A drop in silencer formed of a sleeve or tube of acoustic foam can be positioned into the inlet side of a filter cartridge following a cyclonic separator. The silencer absorbs a significant fraction of the process noise. The acoustic foam can have a textured surface on the sound-facing side.

A motor driven power tool is provided having an internal dust collection system. A single electric motor drives the working member such as a saw or sander and simultaneously drives an air pump which acts as a collector vacuum for debris created when the power tool is in use. A dust collector shroud surrounds a portion of the cutting member and forms an outlet connected to the air pump inlet.

The invention discloses a plate type production line capable of automatically charging and discharging. The plate type production line comprises a charging platform, a machine body and a discharging platform; the charging platform comprises a lifting platform which is arranged on a base, a shear shank is arranged at the lower part of the lifting platform, and one end of a hydraulic cylinder is connected to the base; the discharging platform consists of a motor, a reduction box, a belt, a stopping bakelite plate, a section frame, an optoelectronic switch and a rolling shaft; the machine body consists of a bed body assembly, a gantry assembly, a charging assembly, a rear locator, a lateral locating system, an X sliding plate assembly, a Z shaft assembly, a dust collection system and a pushing system. The plate type production line provided by the invention has the beneficial effects that manual labor can be reduced greatly, the plate locating precision is higher, the use ratio of plates can be improved, and the production cost can be reduced; furthermore, plates can be pushed to the discharging platform timely after the completion of plate processing, so that time that plates occupy the machine main body, after the completion of processing, can be reduced, and the production efficiency can be greatly improved.

A method for recycling dimethyl formamide relates to a method for recovering dimethyl formamide from waste water by an all-subpressure operation method. The method includes the steps of utilizing conduction oil or low-pressure steam as a heat source, sequentially leading the waste water containing DMF to four subpressure operation towers, and performing subpressure concentration in the first tower and the second tower, subpressure fractionating in the third tower and deacidification in the fourth tower, thereby obtaining finished DMF and methanoic acid. Due to the great decrease of stable operating temperature, the recovery rate of the DMF can reach over 99 percent, and the rate of purity reaches 99.99 percent; the resolution ratio of the DMF and the back evaporation rate of the peracid DMF are obviously reduced, a methanoic acid decomposition tower is cancelled, almost no DMF contains peracid, repeated rectification is not needed, and energy sources are saved by over 10 percent; and meanwhile, the dimethylamine quantity generated by decomposition is little and is completely absorbed by a boiler screen dust collection system without emission.

A radial arm saw is adapted with a safety top configured with cutting box enclosure that contains and collects substantially all of the sawdust generated during use. A dust collection system is in fluid communication with the cutting box for removing the sawdust contained therein. Spring biased push blocks function to hold the work piece in place during the sawing process while maintaining the user's hands safely away from the saw blade. A laser alignment device projects a beam within the cutting box along the cutting plane. A control panel is provided to allow use by authorized users upon entry of an authorization code.

The invention relates to a static dedusting device, which comprises: a static deduster, a expert controller, and a sensor inside the static deduster. Wherein, the outlet of sensor is connected to the inlet of expert controller; the outlet of expert controller is connected to the electric field voltage control circuit of static deduster; the sensor detects the data of static deduster to be transmitted to the expert controller to be analyzed and treated and generate a control signal to control the electric filed voltage control circuit, and adjust the dedusting force to stabilize the powder density of outlet at preset valve. The invention can solve the problems that the change of powder density at the inlet is lag to discharged powder density; while it can reduce energy consumption with qualified powder density at outlet. Via bus system, the network control system can be built to realize remote detection on each note, modifying note expert controller and the control parameters of static deduster.

The invention discloses a large tunnel dust removal plant and a dust removal method thereof. The dust removal plant comprises a dust removal electric control group and a dust removal operation group; wherein, the dust removal electric control group comprises an equipped distribution and control chamber and an equipped electric power chamber; the dust removal operation group comprises a 1# operation room, a 2# operation room, a 3# operation room and a 4# operation room. The method of the invention comprises the following steps: an operation car adopts a high-pressure dust blower to blow dust toward the bottom surface and the sides; dust collection ports are respectively arranged in the upper, lower, left and right directions, so as to form spatially closed dust collection; the direction of air flow is adjusted by opening a pneumatically reversible air door; the dust collection ports are combined with air outlets so as to form an air curtain to block leakage of dust, after the dust is filtered, clean air is exhausted through a dust collection blower, thus completing dust removal operation. The air doors can be combined in different directions to complete forward or backward dust removal operation. The invention adopts modular design, is convenient for transport, has the advantages of high efficiency, low cleaning cost, good use effect, safety, reliability and the like, and is suitable for tunnel dust removal of railways and highways.

Dust and debris resulting from the sawing or cutting of concrete masonry units, blocks, bricks, tiles and other masonry products is collected via a three point dust and debris collection system. A movable work supporting table for cooperation with a masonry saw has a grated surface, a vacuum chamber below the grated surface acting as one collection point or area, a heavy debris collection chamber below and in communication with the table vacuum chamber acting as another collection point or area, and a shroud or hood assembly extending rearwardly from the table adapted to extend about the sides and rear of the saw blade and including a vacuum chamber acting as a primary collection point or area. The system is highly effective in achieving dust capture.

The invention provides an electrostatic precipitation system for air in a high wind-speed tunnel, which belongs to the technical field of air purification. The system comprises a purification module, a detection module and a cleaning process module, wherein the input ends of the purification module and the detection module both receive tunnel air; the cleaning process module is connected with the purification module; and the purification module comprises a pre-filter, an air flow distributor, an electrostatic precipitator, a slot-formed filter and a post-filter. Under the conditions of wind speed of 4 to 9m/s and dust content of 0.2 to 10mg/m<3>, the dust collection coefficient reaches 90 to 98 percent, and the dust re-entrainment can be effectively restrained; and all parts are designed and manufactured according to modular requirement, so that the system is assembled and disassembled conveniently.