摘要:
A fastening member for joining together adjacent duct sections includes a head and a shank extending from the head, the shank having an unthreaded space adjacent to the head and a threaded portion extending from the unthreaded space, the threaded portion threadedly engaging a hole of an inserted corner plate positioned in flange of a first duct section. When the fastening member is fully inserted, the inserted corner plate positioned in the flange of the first duct section is retained within the unthreaded space.
摘要:
A fire-rated exhaust duct system comprising a modular configuration or structure. The fire-rated exhaust duct system comprises a plurality of exhaust duct sections. Each of the exhaust duct sections is configured to be joined or connected with other exhaust duct sections in the field or at an installation site, e.g. in building housing a kitchen facility or a laboratory facility to form longer sections or runs for exhaust duct system.
摘要:
The present disclosure describes a silicon carbide articles useful at high temperatures, and the method of making them. The method comprises providing a plurality of silicon carbide parts; providing a mullite gasket; placing the gasket between the ends of the parts to be joined to thereby form an assembly; applying a load in the range of 15-25 pounds per square inch to the parts' ends distal from the gasket to thereby press the gasket; heating the assembly in a muffle furnace under load to a temperature in the range of 1450° C. to 1550° C.; increasing the load on the to range of 30-50 pounds per square inch and holding the assembly at the temperature for a time in the range of 2-5 days to adhere the mullite gasket to the ends of the silicon carbide parts.
摘要:
To avoid even in rotor-stator dispersion machines with high suction power that the drawn liquid is set into a rotational movement whereby the dispersion performance is impaired, the invention provides transitional elements, such as an intermediate piece, for establishing the connection between a rotor-stator dispersion machine and a container. The rotor-stator dispersion machine comprises a rotor-stator system having at least one toothed ring. The container has a longitudinal axis and an outlet. The intermediate piece has a first opening for the connection with the outlet of the container and a second opening for the connection with the rotor-stator dispersion machine. The intermediate piece comprises a tube line that extends between the first and the second opening and has at least in some sections a longitudinal axis that is inclined relative to the longitudinal axis of the container by an angle α30 in the range of 0° to 90 °.
摘要:
Substantially scrapless methods for fabricating angled ductwork fittings. The methods include cutting a pre-determined pattern into a blank comprised of sheet metal material to separate the blank into two or more portions. Bending each of the portions of the blank so that each portion forms a rectangular section of ductwork pipe and joining the sections of ductwork pipe together to form an angled fitting. A transition fitting comprising a transition plate including a first panel and a second panel. The first panel is sized and shaped to be positioned in and to blank-off a gap between a first pipe and a second pipe. The second panel is positionable within the first pipe to direct fluid traveling through the first pipe into the second pipe.
摘要:
A modular, uniform system for the design, manufacture, transporting and installation of ductwork has uniform modules that are reinforced with stiffeners and coupled together in pairs. The module pairs are then attached to one another as they are being installed. Additional support beams and struts are also installed on site. As many of the module pairs as are desired may be fitted together to form a duct system of any desired length.
摘要:
An outlet plate fitting configured for attaching a secondary component to a fluid pipe section. The fluid pipe section includes opposed flanges that define a receiving groove having a bottom surface. The outlet plate fitting includes a main body, an engagement platform connected to and at a distance from the main body, and a bore extending through the main body and the engagement platform. A first surface of the engagement platform faces away from the main body and is a planar surface with a seal member positioned about the bore. A second surface of the engagement platform faces toward the main body and has a ramped surface, such that rotation of the engagement platform in a first direction within the receiving groove causes the planar surface and seal member into sealing engagement with the bottom surface of the receiving groove.
摘要:
The apparatus for joining and sealing conduits, includes edge trim, a sleeve, and a retaining element. The edge trim is shaped to mount upon and engage an end of a conduit. The sleeve extends between the conduits and at least partially surrounds the edge trim. The sleeve may be made of compressible material, such that when the retaining element surrounds a portion of the sleeve and the edge trim, the retaining element generally compresses the portion of the sleeve portion underlying the retaining element and displaces the sleeve material to expand on either side of the retaining element and limit movement of the retaining element. The method of joining and sealing conduits includes mounting the edge trim and a retaining element upon an end of a conduit, extending a sleeve between the conduits, and sliding the retaining element over the sleeve toward the end of the conduit.
摘要:
An apparatus is provided for joining and sealing conduits, includes edge trim, a sleeve, and a retaining element. The edge trim is shaped to mount upon and engage an end of a conduit. The sleeve extends between the conduits and at least partially surrounds the edge trim. The sleeve may be made of compressible material, such that when the retaining element surrounds a portion of the sleeve and the edge trim, the retaining element generally compresses the portion of the sleeve portion underlying the retaining element and displaces the sleeve material to expand on either side of the retaining element and limit movement of the retaining element. The method of joining and sealing conduits includes mounting the edge trim and a retaining element upon an end of a conduit, extending a sleeve between the conduits, and sliding the retaining element over the sleeve toward the end of the conduit.
摘要:
An adaptor for eavestrough downspouts has two portions of different cross sections. The first section fits outside the downspout and the other fits inside the drainage extensions. The two portions are hinged together. The adaptor is formed with step-down sized cross sections and a removable panel to allow more sizes of downspouts and extensions to be connected.