Fluid handling – With casing – support – protector or static constructional... – Static constructional installations
Patent
1994-05-27
1996-09-17
Hepperle, Stephen M.
Fluid handling
With casing, support, protector or static constructional...
Static constructional installations
251148, F16L 500
Patent
active
055559093
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND
This invention relates to valves, in particular the connection ports of such valves. It more particularly relates to the joining arrangements used to connect such valves to compressed air supply and delivery points. It includes associated resilient moulded sealing members and means of adaptation of the valve ports to the inlet and outlet ducts to which the valve is to be connected.
A particular presently known application relates to right-angle flow path diaphragm valves as used in the reverse flow or reverse jet pulse dust collector valve art. Here, the invention relates to joining or connection arrangements applicable to interposing such valves as require connecting one duct sourcing compressed air to a second duct at right-angles to the first that requires the compressed air to be delivered to it. The applicability of the invention may extend to 180.degree. flow path valves and piston rather than diaphragm types.
The applicability of the invention by way of example to the specialized dust collector art is illustrated in the schematic accompanying illustrations FIG. 10 and 11 and described later in more detail with reference to those Figures.
In the dust collector field, prior connection arrangements have included tapered threaded connections at the valve ports and, at greater expense, compression nut Dresser-type fittings. Problems already experienced with valves having threaded inlets include where, to achieve alignment, under-tightening of the threads allows pressure leakage, whilst over-tightening leads to possible fracture of the valve body. The likelihood of alignment problems of the valves can be appreciated by later reference to FIGS. 10 and 11 although FIG. 10 indicates use of prior art Dresser fittings, as illustrated in FIG. 12. Whilst Dresser fittings allow a greater amount of adjustability and tolerance to manufacturing variables than threaded connections, the amount of available adjustment could be with advantage greater. Also, the fittings are relatively expensive.
An object of the invention is to provide a valve having connection port arrangements having resilient sealing members suitable for enabling more economical simplified joining or connection to ducts the arrangements being capable of ameliorating disadvantages experienced in prior used arrangements.
SUMMARY OF THE INVENTION
In one form, the invention consists of a compressed air pressure tight sealing and joining arrangement for use in conjunction with a valve having an inlet port and an outlet port, the inlet port being connectable by an inlet pipe to a rigid header reservoir containing compressed air and the outlet being connectable to a compressed air delivery duct that passes substantially perpendicularly through a clearance hole in a wall into an enclosed chamber, the combination of a first sealing arrangement enabling sealing of the outlet part of the valve to the delivery duct and comprising socket and tube means and a second sealing means adapted to seal the socket and tube means at the said hole and comprising and annularly shaped pre-moulded axial push-on resilient seal having a skirt portion adapted to deformably bear against the wall surrounding said hole and wherein the skirt portion is tapered and extends both radially and axially outwardly from one end of a cylinder gripping portion adapted to be axially slidable over a pre-determined one of either said socket or tube in order to seal between it and said hole.
In another aspect, the invention consists of a valve including compressed air flow port means comprising at least one said port means terminating in a socket having a tube-to-socket seal comprising an enlongated bore adapted to detachably receive by insertion therein an end portion of a cylindrical duct having which is detachably applied a first seal means adapted to frictionally grip the said end portion during relative axial movement between said pipe and said socket and wherein said first seal further includes a nose portion extending both axially and radially away from said open end, said no
REFERENCES:
patent: 3749356 (1973-07-01), Conley
patent: 5056755 (1991-10-01), Jang et al.
patent: 5236229 (1993-08-01), Gonzalez
Goyen Controls & Co. Pty. Limited
Hepperle Stephen M.
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