Pump closure
A diaphragm pump includes a pump head, a pump drive, a socket formed on the pump head configured to be releasably fixed to a mounting formed on the pump drive via a rotary closure, wherein the rotatory closure includes a securing device that includes a pushrod which is received in the mounting and is configured to be biased by a spring via a lever and engages in a positive-locking manner into a bore formed on the socket for locking.
1. A diaphragm pump, comprising:
a pump head;
a pump drive; and
a socket formed on the pump head configured to be releasably fixed to a mounting formed on the pump drive via a rotary closure, wherein the rotary closure includes a securing device that includes a pushrod which is received in the mounting and is configured to be biased by a spring via a lever and engages in a positive-locking manner into a bore formed on the socket for locking;
wherein the pushrod is mounted in a first sleeve fastened in a vertical bore in the mounting and a second sleeve is provided in the first sleeve for accommodating the spring.
2. The diaphragm pump as claimed in claim 1 , wherein the mounting includes at least two bayonet-like latching grooves and the socket includes at least two complementary latching lugs for engagement with the at least two bayonet latching grooves, such that the at least two complementary latching lugs are configured to be releasably fixed to the at least two bayonet latching grooves via a rotational movement after insertion into the mounting.
3. The diaphragm pump as claimed in claim 2 , wherein the at least two bayonet latching grooves are arranged at a 180° angle to one another, and the at least two complementary latching lugs are arranged at a 180° angle to one another.
4. The diaphragm pump as claimed in claim 2 , wherein the mounting includes at least four bayonet latching grooves, and wherein the socket includes at least four complementary latching lugs.
5. The diaphragm pump as claimed in claim 4 , wherein the at least four bayonet latching grooves are arranged at a 90° angle to one another, and wherein the at least four complementary latching lugs are arranged at a 90° angle to one another.
6. The diaphragm pump as claimed in claim 2 , wherein the at least two bayonet latching grooves are formed internally in the mounting and the complementary latching lugs are formed externally on the socket.
7. The diaphragm pump as claimed in claim 2 , wherein each of the at least two bayonet latching grooves include a transverse slot and a longitudinal slot on an inner wall of the mounting, wherein the corresponding transverse slot extends perpendicularly to a circumference of the mounting and is open on a socket side to receive a respective lug of the at least two complementary latching lugs and is obliquely flattened on one side such that the respective lug of the at least two complementary latching lugs is configured to be guided into the corresponding longitudinal slot via an inclined surface.
8. The diaphragm pump as claimed in claim 2 , wherein the at least two complementary latching lugs are elongated and are rounded on at least one of the face sides of the at least two complementary latching lugs to reduce a friction factor.
9. The diaphragm pump as claimed in claim 1 , wherein a socket-side bore for the pushrod engagement is oriented with the pushrod in the mounting in an end position of the rotary closure.
10. The diaphragm pump as claimed in claim 1 , wherein the first sleeve for receiving the pushrod has an inclined ramp such that the pushrod is configured to be biased to a first position by rotation of the lever provided on the outer end of the pushrod, and is configured to be released to a second position by counter-rotation, wherein the biased pushrod engages into the bore of the socket when the bore is oriented with the pushrod.
11. The diaphragm pump as claimed in claim 10 , wherein the lever includes a rotary vane.
12. The diaphragm pump as claimed in claim 10 , wherein the counter-rotation is 180°.
13. The diaphragm pump as claimed in claim 10 , wherein the inclined ramp is formed by an inclined cut on the first sleeve protruding from the mounting.
14. The diaphragm pump as claimed in claim 1 , wherein the pushrod latches out of a socket-side bore after rotation of the lever by 180°, from a first position to a second position, so that the locking is released.
15. The diaphragm pump as claimed in claim 1 , wherein the securing device is arranged on the mounting at a spaced interval between at least two latching grooves.
16. The diaphragm pump as claimed in claim 1 , wherein the bore is spaced between at least two latching lugs such that a spaced interval between the bore and one of the at least two latching lugs is at an angle of 1° to 44°.
17. The diaphragm pump of claim 16 , wherein the angle is 5° to 30°.
18. The diaphragm pump as claimed in claim 1 , wherein the rotary closure includes a bayonet closure.
19. A diaphragm pump, comprising:
a pump head;
a pump drive; and
a socket formed on the pump head configured to be releasably fixed to a mounting formed on the pump drive via a rotary closure, wherein the rotary closure includes a securing device that includes a pushrod which is received in the mounting and is configured to be biased by a spring via a lever and engages in a positive-locking manner into a bore formed on the socket for locking;
wherein the socket includes at least two socket-side bores provided radially to an annular shaped surface of the socket.
20. The diaphragm pump of claim 19 , wherein the socket includes at least four socket-side bores arranged at a 90° angle to one another provided radially to the annular shaped surface of the socket.