Inlet valve for chamber systems and sample containers, and chamber systems and sample containers with such inlet valves

摘要

An inlet valve charges an inner chamber of a system or sample container with liquid and has a first pipetting axis, an inlet opening, it supplies liquid by a laboratory pipette that is automatically reclosed and also has a valve body with a blocking element, a pressing part and a throat, a valve space enclosing the valve body at least partly near the throat, a spring mechanism and a sealing element. The throat connects the blocking element to the pressing part and has an open passage region which opens into the liquid passage of the pressing part and into the valve space. The spring mechanism presses a sealing surface of the blocking element against the sealing element in a closed position of the valve body. The valve body can be brought to an open position by pressing the pressing part against the spring mechanism.

主权项

1. An inlet valve (12) for charging an inner chamber (2) of a chamber system (1) or sample container (57) with a liquid (18), wherein the inlet valve (12) is configured for supplying the liquid (18) by means of a laboratory pipette (19′) and comprises a first pipetting axis (6), and wherein the inlet valve (12) comprises an inlet opening (5) and is configured to be automatically reclosing as such inlet opening (5), characterized in that the inlet valve (12) comprises:
(a) a valve body (61) which is arrangeable in the inlet opening (5) and is movable in the direction of the first pipetting axis (6) between a closed position (15) and an open position (17), comprising: a blocking element (14) which comprises a sealing surface (63); a pressing part (20) which is spaced from the blocking element (14) and which is subjectable to action by a tool (19, 19′), and which comprises a liquid passage (22) in the region of the first pipetting axis (6); a throat (21) which connects the blocking element (14) and the pressing part (20) to each other and which comprises at least one open passage region (23), which is configured on the one hand to open into the liquid passage (22) of the pressing part (20) and is arranged on the other hand to open into a valve space (62); (b) a valve space (62) enclosing the valve body (61) at least partly in the region of the throat (21); (c) a spring mechanism (13; 30; 40) which is arranged on the one hand to act on the pressing part (20) or the blocking element (14) and on the other hand to act on a wall (3) of the chamber system (1) or a closure element (4) of the sample container (57), and (d) a sealing element (16) which is connected to an inner wall (3) of the chamber system (1) or a closure element (4) of the sample container (57); wherein the spring mechanism (13; 30; 40) is configured in such a way that it presses the sealing surface (63) of the blocking element (14) in the closed position (15) of the valve body (61) against the sealing element (16), and wherein the valve body (61) of the inlet valve (12) is configured in such a way that it can be brought to the open position (17) by pressing the pressing part (20) against the resistance of the spring mechanism (13; 30; 40).