초록 ▼

An improved disc for a butterfly valve having reduced structure within the bore of the valve, so as to minimize obstruction to the flow of granular material therethrough. Accelerated flow of granular material through the valve is obtained because of the thin dimensions of the butterfly valve. The mo

An improved disc for a butterfly valve having reduced structure within the bore of the valve, so as to minimize obstruction to the flow of granular material therethrough. Accelerated flow of granular material through the valve is obtained because of the thin dimensions of the butterfly valve. The modified disc includes upper and lower sockets, most of its structure is outside the perimeter of the disc. The disc may be of arcuate shape.

대표청구항 ▼

1. A closure disc for a butterfly valve for use in the unloading of granular material, said closure disc being structured to provide for greater accelerated flow of the granular material from a tank trailer and through the butterfly valve during unloading, said disc having a sufficient diameter to d

1. A closure disc for a butterfly valve for use in the unloading of granular material, said closure disc being structured to provide for greater accelerated flow of the granular material from a tank trailer and through the butterfly valve during unloading, said disc having a sufficient diameter to dispose said disc in direct contact with an internal bore of the butterfly valve when manipulated into closure, and said disc provided for manipulation at least approximately 90° to provide for opening of the butterfly valve during performance of an unloading procedure, said disc having diametrically opposed sockets, one of the opposed sockets provided for accommodating the location of a pivot pin of the butterfly valve therein, and the other opposed socket provided for accommodating the locating of an operating shaft of the butterfly valve therein, said other opposed socket having a stepped configuration upon an outer surface, so as to reduce the surface area against which the granular material impinges when the butterfly valve is opened during an unloading process, said other opposed socket also having compound sockets provided internally therein, corresponding to the stepped configuration of the external portion of the socket, so as to accommodate the stepped configuration of the operating shaft therein to provide for a structured connection for operating of the valve disc, in preparation for either opening of the disc for unloading of granular material therethrough, or to be pivoted into closure, when it is desired to close the butterfly valve after completion of an unloading function and said sockets incorporate shallow shoulders that bias against an inner surface of the butterfly valve bore opening, with the remainder of a greater cylindrical structure of each socket extending outwardly of a periphery of the internal bore, and extending into the butterfly valve to accommodate the insertion of the pivot pin and the operating shaft within the respective sockets, during assembly and usage of the butterfly valve for unloading purposes. 2. The butterfly valve disc of claim 1, wherein the other opposed socket has a double stepped internal cavity for accommodating the reception of the operating shaft therein, to provide the means for opening and closing of the butterfly valve during its operations of the disc. 3. The butterfly valve disc of claim 1, wherein the other opposed socket has a cavity with the cavity having a width, a thickness, and a length with the width of the cavity being greater than the thickness along the length of the stepped configuration. 4. The butterfly valve disc of claim 1, wherein said disc is formed of lightweight material. 5. The butterfly valve disc of claim 1, wherein the operating shaft has a stepped end and the other opposed socket is provided with internal stepped cavities to accommodate the insertion of the stepped end of the operating shaft. 6. A disc for a butterfly valve, the butterfly valve of the type that is used for unloading granular material, said disc being configured to accelerate the flow of granular material through the butterfly valve, during performance of an unloading operation, said disc being of a thin line configuration, in order to afford greater surface area within a bore of the butterfly valve through which the granular material flows during an unloading operation, said disc having a pair of integral sockets, one socket provided for accommodating a pivot pin of the butterfly valve at one diametric location, the other socket arranged diametrically from the first mentioned socket, and said other socket provided for accommodating the insertion of an operating shaft of the butterfly valve therein, to provide for manipulation of the disc between an opened and closed positions, during usage, said sockets having outwardly extending cylindrical structures beyond the circumference of the valve disc, and for extension within diametrically arranged cavities within the butterfly valve, to provide for pivoting of the valve disc during its usage, and said sockets having lesser surface area within an interior of the butterfly valve bore, than the amount of cylindrical structure for each valve that extends outwardly of a periphery of the disc, and the butterfly valve bore, and into the butterfly valve itself and said sockets incorporate shallow shoulders that bias against an inner surface of the butterfly valve bore, with the remainder of a greater cylindrical structure of each socket extending outwardly of a periphery of the bore, and extending into the butterfly valve to accommodate the insertion of the pivot pin and the operating shaft within the respective sockets, during assembly and usage of the butterfly valve for unloading purposes. 7. The disc for a butterfly valve of claim 6, wherein said disc is formed of lightweight material. 8. The disc for a butterfly valve of claim 6, wherein the other socket is provided with internal stepped cavities to accommodate the insertion of a stepped operating shaft for the butterfly valve therein during its assembly and usage. 9. The disc for a butterfly valve of claim 8, wherein the first mentioned socket includes a cavity therein, for accommodating the locating of part of the pivot pin therein, to accommodate the pivoting of the disc within the butterfly valve during opening and closing of the butterfly valve. 10. The disc for a butterfly valve of claim 9, wherein the pivot pin is tapered upon that end that inserts within the cavity of the associated socket. 11. The disc for a butterfly valve of claim 10, wherein the taper for the pivot pin reduces the associated structure of the socket into which it inserts, to thereby provide additional open surface area within the bore of the butterfly valve to accommodate more accelerated flow of granular material therethrough during an unloading operation. 12. A closure disc for a butterfly valve for use in the unloading of granular material, said closure disc being structured to provide for greater accelerated flow of the granular material from a tank trailer and through an internal bore of the butterfly valve during unloading, said disc having a sufficient diameter to dispose said disc it in direct contact with the internal bore of the butterfly valve when manipulated into closure, and said disc provided for manipulation of at least approximately 90° to provide for opening of the butterfly valve during performance of an unloading procedure, said disc having diametrically opposed sockets, one of the sockets provided for accommodating the location of a pivot pin of the butterfly valve therein, and the opposite socket provided for accommodating a locating of an operating shaft of the butterfly valve therein, said disc of the butterfly valve having an arcuate surface upon at least one of its sides, in order to accelerate the flow of granular material through the butterfly valve when opened for unloading of granular material therethrough and said sockets incorporate shallow shoulders that bias against an inner surface of the internal bore, with the remainder of a greater cylindrical structure of each socket extending outwardly of a periphery of the internal bore, and extending into the butterfly valve to accommodate the insertion of the pivot pin and the operating shaft within the respective sockets, during assembly and usage of the butterfly valve for unloading purposes. 13. The closure disc for a butterfly valve of claim 12, wherein said disc is concaved upon one side surface, and said disc is of convexed shape on its opposite side surface. 14. The closure disc for a butterfly valve of claim 12 wherein said disc is formed of lightweight material. 15. The closure disc for butterfly valve of claim 14 wherein said disc is formed of aluminum. 16. The closure disc for butterfly valve of claim 1 wherein said disc is formed from aluminum.