Withdrawal system
A removal system ( 1 ) for a container designed to receive a fluid, with an extraction head ( 4 ) and a dip tube ( 5 ) that can be fastened thereto. By means of the extraction head ( 4 ), fluid can be removed through the dip tube ( 5 ) from the container ( 3 ) or fluid can be fed into the container ( 3 ). The extraction head ( 4 ) can be fastened to the dip tube ( 5 ) by a displacement movement. Alternatively or additionally, a target position of the dip tube ( 5 ) at the extraction head ( 4 ) is monitored by means of an optical sensor ( 12 ).
1. A removal system ( 1 ) for a container designed for receiving a fluid, with an extraction head ( 4 ) and a dip tube ( 5 ) that can be fastened thereto, wherein by means of the extraction head ( 4 ) fluid can be removed through the dip tube ( 5 ) from the container ( 3 ) or fluid can be fed into the container ( 3 ), characterized in that the extraction head ( 4 ) can be fastened to the dip tube ( 5 ) by a displacement movement, and/or that a target position of the dip tube ( 5 ) at the extraction head ( 4 ) is monitored by an optical sensor ( 12 ), wherein,
due to the displacement movement of the extraction head ( 4 ) relative to the displacement tube ( 5 ), a positioning element is moved, wherein the position of the positioning element is monitored by the optical sensor ( 12 ), and wherein the optical sensor ( 12 ) generates a binary switching signal, the switching states of which indicate whether the positioning element is located in the detection range of the optical sensor ( 12 ) or not.
2. The removal system ( 1 ) according to claim 1 , characterized in that the positioning element only projects into the detection range of the optical sensor ( 12 ) when the extraction head ( 4 ) is located in the region of the target position at the dip tube ( 5 ).
3. The removal system ( 1 ) according to claim 1 , characterized in that a displacement movement of the positioning element is effected by the displacement movement of the extraction head ( 4 ) relative to the dip tube ( 5 ).
4. The removal system ( 1 ) according to claim 1 , characterized in that the extraction head ( 4 ) can be connected to the dip tube ( 5 ) by means of a robot.
5. The removal system ( 1 ) according to claim 1 , characterized in that the optical sensor ( 12 ) is a light barrier.
6. The removal system ( 1 ) according to claim 5 , characterized in that the optical sensor ( 12 ) is a fork light barrier.
7. The removal system ( 1 ) according to claim 1 , characterized in that the positioning element is designed in the form of a pin ( 21 ), which is displaceably located in a borehole ( 20 ) of the extraction head ( 4 ).
8. The removal system ( 1 ) according to claim 7 , characterized in that the pin ( 21 ) in a starting position projects beyond a lower edge of the extraction head ( 4 ) and is outside the detection range of the optical sensor ( 12 ), and that by contact with the dip tube ( 5 ), the pin ( 21 ) is displaceable into an end position, in which the upper end of the pin ( 21 ) lies in the detection range of the optical sensor ( 12 ).
9. The removal system ( 1 ) according to claim 7 , characterized in that a housing segment ( 15 a ) of the extraction head ( 4 ) is in the shape of a hollow cylinder, whereby a connection segment ( 18 ) of the extraction head ( 4 ) projects beyond the open bottom side of the housing segment ( 15 a ), the connection segment ( 18 ) being designed for connecting the dip tube ( 5 ).
10. The removal system ( 1 ) according to claim 9 , characterized in that the dip tube ( 5 ) can be pushed onto the connection segment ( 18 ).
11. The removal system ( 1 ) according to claim 9 , characterized in that the lower edge of the housing segment ( 15 a ) forms a stop ( 16 ) for the dip tube ( 5 ), wherein the pin ( 21 ) in its starting position projects beyond the lower edge of the housing segment ( 15 a ).
12. The removal system ( 1 ) according to claim 11 , characterized in that with the dip tube ( 5 ) abutting the stop ( 16 ), the pin ( 21 ) is pushed into the borehole ( 20 ) and lies in the end position.
13. The removal system ( 1 ) according to claim 11 , characterized in that the dip tube ( 5 ) abutting the stop ( 16 ) is secured in place by a form-locked or force-locked connection with the connection segment ( 18 ).