Abstract:
A spray coating system, in one embodiment, includes a spray gun having a body, a valve cartridge, and a protective insert. The body includes a passage intersecting a receptacle. The valve cartridge is disposed in the receptacle. The protective insert is disposed in the passage. The protective insert has a central passage, and the protective insert protects the passage from wear by liquid flow through the body.
Abstract:
An apparatus designed to clean surfaces and to recycle a cleaning fluid. The apparatus has a hand-holdable housing that includes a head with a distal end through which cleaning solution may be impelled. The apparatus further has a pump for both impelling and urging cleaning fluid back through a return path. The pump has a flexible membrane and a pump drive mechanism in which two pistons drive the flexible membrane. The cleaning fluid includes a foaming-resistant composition that has an abrasive agent; a shear thinning fluid matrix, and a non-foaming means.
Abstract:
The invention relates to spinning disc spray apparatus wherein liquid or powder supplied to the upper surface of a spinning disc is centrifuged to fall under gravity onto a receiving surface. The conventional spinning disc produces an annular spray pattern of narrow radial width. The present invention provides a spining disc spray apparatus affording a more uniform distribution of the dispensed material by providing a disc (11) comprising a central annulus surrounded by a discharge annulus, the discharge annulus having openings (14) which allow discharge of material therethrough. In one preferred embodiment the openings (14) comprise radial slots, defining vanes (15) extending radially from the central annulus and the vanes (15) are twisted to generate downwardly directed air currents which assist distribution. The disc (11) disclosed is particularly advantageous in electro-static depositing apparatus wherein the particles distributed have mutually rejecting charges and the hood includes, or surrounds, means having a charge to reject the particles.
Abstract:
A spray coating device includes a ring (14) surrounding a spray device (4) radially spaced and supporting at least one electrode (28). Gas flowing across the ring (14) and electrode transmits electrical charges from the electrodes to particles of atomized coating material, downstream from a spray head (6) of the spray device (4). The electrical charging of the coating material is considerably increased thereby.
Abstract:
There are provided an air motor (3), a rotary atomizing head (4) that is provided on the front side of the air motor (3) to be rotatable by the air motor (3), external electrode units (13) that are provided in the periphery of the rotary atomizing head (4), and a high-voltage applying unit (15) that applies a high voltage to the external electrode units (13) to indirectly charge paint particles atomized from the rotary atomizing head (4) with the high voltage. A film cover is provided to be formed with a resin material in a film shape for covering an outer peripheral side of the air motor (3). The film cover (17) includes a cylindrical rear cover (18) that covers the rear side from the external electrode units (13) and a cylindrical front cover (19) that is mounted to the front side of the rear cover (18) to cover the front side from the external electrode units (13).
Abstract:
The invention relates to a monitoring method and to a monitoring device (6) for an electrostatic coating plant (1) which coats components (3) with a coating agent that is electrically charged by means of a high voltage device (4), wherein the monitoring method comprises the following steps: determining a first operating variable (IB) of the high voltage device (4), comparing the first operating variable (IB) to a limit value (IG), and initiating a safety measure if the comparison between the first operating variable (IB) and the limit value (IG) indicates a disturbance in the electrostatic coating plant (1). It is proposed to flexibly adjust the limit value (IG) depending on the operation mode.