摘要:
An electronic audio circuit operates a piezoelectric audio transducer whose emitted sound is directed at a parabolic reflecting dish to produce an increased sound output.
摘要:
Piezoelectric alarm devices are held in a plastic housing with flat bladed electrical terminals carried on the outside of the housing. These terminals are being replaced by a pluggable terminal block assembly which can be readably integrated into the housing. The assembly includes a header which is encapsulated in the housing.
摘要:
A system and method for forming a polymeric molding. A mold component includes a transmissive portion for passing curing energy such as UV light into the mold cavity. A masking collar is engaged around the transmissive portion to block curing energy from exposing and curing polymeric material outside of the region underlying the transmissive portion.
摘要:
A method for mounting a screen assembly to a screen mounting structure of a vibratory separator to effectively seal the screen assembly in place, the method in certain aspects including locating the screen assembly on a screen mounting structure of the separator, positioning the screen assembly so that crossmembers of a four-sided generally rectangular support of the screen assembly are either all parallel to or are all transverse to a direction of material flowing across the screen assembly, forcing two sides of the support of the screen assembly down with a crowning apparatus to effect crowning of the screen assembly, the support sufficiently flexible so that two sides thereof other than the two forced-down sides sealingly contact a surface of the screen mounting structure along substantially all of their length.
摘要:
A piezoelectric transducer driving circuit has a main oscillator stage, a buffer circuit, and a voltage-doubling circuit. The main oscillator stage includes a frequency-swept signal generator that can be configured to provide different outputs to the buffers, which in turn provide the output to the voltage-doubling circuit, which supplies the piezoelectric transducer, causing it to mechanically deform and produce audible sounds of different types.
摘要:
A separator system having a container, a screen apparatus with a box and at least one screen on the box, the at least one screen having a plurality of holes therethrough through which the liquid is passable and through which the solids are not passable, vibratory apparatus for vibrating the box and the screen(s), the material to be treated flowable up to the at least one screen and liquid in the material flowable to and through the at least one screen, a primary conveyor beneath the at least one screen for removing solids with liquid from the container and, optionally, movement apparatus for moving the solids including liquid from the container, and a secondary treatment system for further processing of the solids including liquid.
摘要:
A screen assembly for mounting on mounting structure of a vibratory separator, the mounting structure having at least one support part, and methods of its use, the screen assembly including a frame with a first frame end, a second frame end and a first side and a second side, at least one crossmember, extending from the first frame end to the second frame end, and spaced-apart from the sides, the frame having a top and a bottom, the at least one crossmember having a top and a bottom positionable above and adjacent a support part of the mounting structure, screening material on the frame, and space maintenance apparatus on the bottom of the at least one crossmember for occupying a space between the crossmember and the support part.
摘要:
Vessels for selectively holding drilling cuttings material and methods employing such vessels; the vessels, in at least certain aspects, having a body with a hollow container with an interior space for receiving drilling cuttings material and from which the material may exit from the body; a first opening through which the material enters into the container; a second opening through which the material passes out from the container; and movement apparatus with a movement member within the container movable adjacent the second opening to facilitate passage of the material into the second opening; and in certain aspects, the vessels having moisture-content sensor apparatus on the body for sensing moisture content of material within a vessel; conduit apparatus for conducting drilling cuttings from the exit opening; valve apparatus for selectively controlling flow of material in the conduit apparatus; and a controller in communication with the moisture-content sensor apparatus and the valve apparatus for selectively controlling flow in the conduit apparatus.
摘要:
A screen assembly for a shale shaker comprising a panel (500) and a support structure (600), the panel (500) having an area provided with a multiplicity of apertures and at least one layer of screening material arranged over the multiplicity of apertures, wherein said panel (500) is removable from said support structure (600).
摘要:
A vibratory separator (in one aspect for treating drilling material) and methods of use, the separator in certain aspects having a base, a basket or box movably mounted on the base, screen apparatus on the basket or box, the material flowing to the screen apparatus for treatment (downflow or upflow), at least a portion of the screen apparatus not inclined downhill (e.g. said portion or all horizontal or uphill), electromagnetic or piezoelectric vibratory apparatus connected to the basket or to the screen apparatus for vibrating the basket and the screen apparatus or for vibrating the screen apparatus, driving apparatus for driving the vibratory apparatus, and control apparatus (on-site and/or remote) for controlling the driving apparatus and the vibratory apparatus.