Pipe joints or couplings – Contact only
Patent
1983-12-08
1986-08-12
Callaghan, Thomas F.
Pipe joints or couplings
Contact only
285420, F16L 5500
Patent
active
046052470
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates generally to pneumatic transport and more particularly to devices for sealing the detachable joints of tubing elements used in pneumatic transport facilities.
BACKGROUND ART
Known in the present state of the art are devices for sealing the joints of tubing elements used in pneumatic transport facilities, comprising two flanges of which one flange is rigidly secured on one of the tubing elements and the other flange is mounted on the other tubing element with a clearance and is kinematically associated with a mechanical actuator so as to be traversed lengthwise the other tubing element. The device is also provided with a contrivance to hermetically seal up the joint between the other flange and the other tubing element.
The other flange is so mounted on the other tubing element as to traverse strictly axially from a power cylinder kinematically associated therewith through a linkage or rodding (cf., e.g., USSR Inventor's Certificate No. 893,748 published in the "Bulletin of discoveries, inventions, industrial designs and trade marks", No. 48 of 1981).
To attain reliable operation of a pneumatic transport facility one should provide a high degree of hermetic tightness of every detachable joint. This is attainable in the aforedescribed device only due to high-precision perfect manufacture of all the components involved. However, since this device is to be applied in relatively large-bore tubings, such a manufacture of the aforesaid components substantially raises the cost of the device for sealing the detachable joints and hence the arrangement as a whole.
DISCLOSURE OF THE INVENTION
The invention is aimed at the provision of a device for sealing the detachable joints of tubing elements used in pneumatic transport facilities, wherein the kinematic association of the other flange with the mechanical actuator would make it possible to render the requirements imposed upon the manufacturing accuracy of the device components less rigorous without affecting the reliability of sealing.
The principal object of the invention is attained due to the fact that in a device for sealing the joint of tubing elements in pneumatic transport facilities, comprising two flanges of which one flange is rigidly secured on one of the tubing elements and the other flange is mounted with some clearance on the other tubing element, is kinematically associated with a mechanical actuator so as to be traversed lengthwise the other tubing element and has a contrivance to hermetically seal the joint between said other flange and said other tubing element, according to the invention, the kinematic association of the other flange with the mechanical actuator is carried out through a frame mounted with a possibility of oscillating within the aforementioned clearance about at least one pivot point which is situated outside the outline of the other flange which is mounted on said frame through two hinge joints whose pivot pins are located on the opposite sides of the flange in a plane passing through the geometric axis of the tubing element.
The device of the invention is expedient to have a retainer or lock shaped as a rod provided on the other flange and kinematically associated with its own mechanical actuator. It is also expedient that the flange rigidly secured on one of the tubing elements would have a respective hole to receive said rod.
Such a locking of the flanges in the device is the simplest one from construction viewpoint and is most reliable in operation.
The device for sealing the detachable joint of tubing elements in pneumatic transport facilities, according to the invention, does not involve high manufacturing accuracy, and is reliable in operation since one of the flanges making up the joint is capable of self-aligning with respect to the other flange.
The device of the invention is applicable in pneumatic transport facilities for hermetically sealing practically every detachable joint therein, for instance, in switch-over arrangements, end gates, etc.
BRIEF DESCRIPTION OF THE DRA
REFERENCES:
patent: 2062806 (1936-12-01), Casler
patent: 3154326 (1964-10-01), Anding
patent: 3233549 (1966-02-01), Howe
patent: 3442535 (1969-05-01), Frohlich
patent: 3473828 (1969-10-01), Pearson
patent: 3606389 (1971-09-01), Munton et al.
patent: 3817490 (1974-06-01), Deeg
patent: 4130463 (1978-12-01), Klavir
Alexandrov Adolf M.
Bulginov Evgeny F.
Tsernes Vladimir Y.
Volyansky Igor I.
Yashin Jury A.
Callaghan Thomas F.
Spetsialnoe Konstruktorskoe Bjuro "Transprogress"
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