Shutoff valve,especially for flushing units

Claim 2

A shutoff valve, especially for use in connection with fluid conveying means which includes: housing means comprising first chamber means with a cylindrical inner surface and with groove means provided in said cylindrical inner surface extending in the axial direction thereof, said housing means also comprising second chamber means with fluid outlet means and furthermore comprising passage means for establishing communication between said first and second chamber means, closure means operable to control said passage means, and plunger means firmly connected to said closure means and movable selectively in said first chamber means so as to establish communication between said groove means and said second chamber means through said passage means in response to said plunger means moving away from said passage means.

Claim 3

A valve according to claim 1, in which said groove means comprises pairs of grooves which are so arranged that the grooves of one and the same pair are located opposite to each other, the grooves of one pair differing in dimension from the grooves of another pair.

Claim 4

A valve according to claim 1, in which said plunger means has that end which faces toward said closure means and also that end which faces away from said closure means provided with a section tapering toward the axis of said closure means.

Claim 5

A valve according to claim 1, in which said plunger means engages a portion of said closure means.

Claim 6

A valve according to claim 1, in which said closure means is formed by a ball of elastic material, and in which that end of said passage means which is adjacent said closure means has adjacent thereto a spherical seat to accommodate the adjacent surface of said ball.

Claim 7

A valve according to claim 5, in which said ball is of rubber.

Claim 8

A valve according to claim 1, in which said second chamber means includes an inner chamber located adjacent said passage means and forming a throttle chamber with throttling outlets, and also includes an outer chamber communicating with said inner chamber through said throttling outlets.

Claim 9

A valve according to claim 1, which includes manually operable actuating means operatively connected to said closure means for opening the same, and spring means continuously biasing said actuating means to move said closure member to its position for closing said passage means.

Claim 10

A valve according to claim 8, in which said actuating means includes a reciprocable rod connected to said closure member and also includes a rotatable spindle operable to longitudinally displace said rod.

Claim 11

A valve according to claim 8, in which said actuating means includes a reciprocable rod connected to said closure member and also includes rotatable eccentric means operable to longitudinally displace said rod.

Claim 12

A valve according to claim 10, which includes pivotable arm means supported by said housing means, and roller means supported by said arm means and interposed between said eccentric means and said rod.

Claim 13

A valve according to claim 1, in which said housing means includes third chamber means arranged in substantially axial alignment with said first chamber means and located on that side of said second chamber means which is remote from said first chamber means, double acting piston means reciprocable in said third chamber means and rigidly coupled to said closure means so as to be movable therewith, throttling means associated with said third chamber means, means for establishing connection between said throttling means and said second chamber means, said housing means also including a control mechanism comprising fourth chamber means with a reciprocable control plunger, first conduit means controlled by said control plunger and leading from said fourth chamber means to the upper portion of said third chamber means, manually operable means operatively connected to said control plunger for actuating the same, fifth chamber means, seconD conduit means leading from said fifth chamber means to said first chamber means, said fifth chamber means having an opening for communication with said fourth chamber means, valve means controlling said opening, spring means continuously urging said valve means to close said opening, and means firmly connecting said control plunger in said fourth chamber means with said valve means, said manually operable means being operable to move said valve means against the thrust of said spring means so as to cause said valve means to open said opening to thereby establish communication between said fifth chamber means and the upper portion of said third chamber means through said first and second conduit means.

Claim 14

A valve according to claim 12, in which said second chamber means has a relatively short axial extension with regard to its dimension in a direction perpendicular thereto.

Claim 15

A valve according to claim 12, which includes a partition arranged between said second and third chamber means and provided with bores therethrough, the axes of said bores being substantially perpendicular to the axes of said outlet means.

Claim 16

A valve according to claim 14, in which said housing means has flange means intermediate said second chamber means and said third chamber means, and in which said partition rests on said flange means, and spring ring means securing said partition onto said flange means.

Claim 17

A valve according to claim 12, in which said throttling means is formed by a throttling screw, and in which the means for establishing communication between said throttling means and said second chamber means is formed by conduit means.

Claim 18

A valve according to claim 1, in which the fluid outlet means of said second chamber means are at an angle with regard to the axis of said second chamber means.