摘要:
A rotary type electrostatic spray painting device including a rotary shaft driven by an air turbine. A reflecting face portion and a non-reflecting face portion are formed on the rear end face of the rotary shaft. A rotating speed sensor is arranged adjacent to the rear end face of the rotary shaft to detect the rotating speed of the rotary shaft from light reflected from the reflecting face portion. The amount of pressurized air fed into the air turbine is controlled in response to the output signal of the rotating speed sensor so that the rotating speed of the rotary shaft becomes equal to a desired rotating speed.
摘要:
A rotary type electrostatic spray painting device comprising a rotary shaft supported by static pressure air bearings in a non-contact state. A drive turbine wheel and a braking turbine wheel are fixed to the rotary shaft. A paint injection nozzle is provided for feeding paint onto a cup shaped inner wall of the spray head. The paint injection nozzle is connected to a paint suction device. When changing the color of the paint, pressurized air is injected towards the braking turbine wheel and, at the same time, paint remaining in the paint injection nozzle is sucked away by the paint suction device.
摘要:
An electrostatic spray coating apparatus. Piping for supplying paint, operating air, etc. is divided in the middle of its course between a pressurized air source and downstream portions such as an air motor and a color-change valve, and is connected by a joint at these divided points. The apparatus can thereby be put to functional testing before it is installed on its work spot.
摘要:
A color exchange and cleaning device of a minibell painting machine has two systems or sections, that is, a bell-side (first) color exchange and cleaning section and a counter-side (second) color exchange and cleaning section, and includes a manifold provided with a bell-side conduit and a counter-side conduit. The bell-side conduit is communicated with a trigger dump valve for the bell-side color exchange and cleaning section and a trigger valve for the counter-side color exchange and cleaning section. The counter-side conduit is connected via a connection hose with the trigger dump valve for the bell-side color exchange and cleaning section. The trigger valve for the counter-side color exchange and cleaning section is connected with a dump valve. The counter-side conduit is provided with a plurality of color valves, a low-pressure thinner valve and a low-pressure air valve. Thus, a manifold for the bell-side color exchange and cleaning section is eliminated, and the connection hose is made short.
摘要:
A rotary type electrostatic spray coating device comprising two or more side spray coating units having two or more spray heads separated from each other at a distance larger than a width of the coating pattern of each spray head, and the same negative high voltage is simultaneously applied to all of the spray heads during a spray coating operation; thus enabling a shortening of the length of the spray coating booth, improving a flatness of the paint coating on the work pieces, and completely preventing an undesirable deposition of paint mist on the spray heads.
摘要:
A spray head of rotating type electrostatic spray painting device comprises a cup shaped inner circumferential wall and a tip portion from which paint particles are discharged. The outer periphery of the tip portion is formed as an annular flat face perpendicular to the rotating axis of the spray head. The inner periphery of the tip portion is formed as a conical face which diverges toward the outside of the spray head. A plurality of paint guide grooves are formed on only the inner periphery of the conical face.
摘要:
An electronic device is provided which includes a base, a through-electrode that passes through the base and from which an insulating material on an end face thereof is removed by polishing, a circuit pattern that is formed on an end face of the through-electrode, an electronic component that is disposed via an internal wiring formed on the circuit pattern, an electrode pattern that is formed on the surface of the base opposite to the surface on which the electronic component is disposed and that is connected to the other end face of the through-electrode, an external electrode that is formed on the electrode pattern, and a cap that is bonded to the base so as to protect the electronic component on the base.
摘要:
An air filter assembly has a fan, pre-filter, a main filter, and a control circuit which generates various signals to the user as to when the pre-filter and the main filter should be replaced. The control circuit detects when the pre-filter should be replaced from two conditions: a first pre-filter replacement condition based decreased air flow, and a second pre-filter replacement condition based on cumulative operating time. The control circuit detects when the main filter should be replaced based on a formula containing a number of the occurrences of the first pre-filter replacement condition and a number of occurrences of the second pre-filter replacement condition. The control circuit also detects a main filter replacement condition based on cumulative operating time of main filter. The main filter can have a fuse that is blown when the main filter should be replaced.
摘要:
A reducing water purification material having a reducing iron-based precipitate selected from green rust, iron ferrite, reducing iron hydroxide, and a mixture thereof. A wastewater treatment process having steps of adding a reducing iron compound to wastewater, leading the wastewater to which the reducing iron compound is added to a reaction tank and forming a precipitate, separating the formed precipitate by a solid-liquid separation to obtain a sludge, and alkalinizing all or a portion of the separated sludge to form an alkaline sludge followed by returning to the reaction tank, wherein in the precipitation step, the wastewater to which the reducing iron compound is added and the alkaline sludge are mixed and are allowed to react in a non-oxidizing atmosphere under alkaline condition to form a reducing iron compound precipitate as the precipitate, thereby incorporating contaminants in the precipitate to remove the contaminants from the wastewater.
摘要:
An apparatus for valve-gate injection molding producing an annular molded product having a center through-hole has a valve gate with a simplified structure. The apparatus includes a movable mold member having a first center bore extending in an axial direction, a stationary mold member having a second center bore corresponding to the first bore and providing a product cavity forming the annular molded product between the mold members, a nozzle mounted on the stationary mold member and having a resin supply route having an opening communicating with the second bore, a valve pin extending in the resin supply route and movable between a closing position for closing the opening and an opening position for opening the opening, a center pin movably arranged in the first bore and having a tip surface in contact with a tip surface of the valve pin, and a driving mechanism driving the center pin in the axial direction.