Hose pump

Abstract

A hose pump includes a hose bed having a counter support, a carrier disk rotatable relative to the counter support, and a number of pinch rollers and guide rollers arranged on the carrier disk. A guide roller is arranged between two consecutive pinch rollers, and the pinch rollers press a hose inserted into hose bed against the counter support, while pinching the hose when the carrier disk is rotating in the conveying direction to transport the fluid in the hose. To ensure reliable threading of a hose section of a pump hose, when the hose section is somewhat too short and to prevent unthreading of the inserted hose section during operation of the hose pump, the angular distance between a guide roller and the pinch roller preceding the guide roller in the conveying direction is greater than the angular distance between this guide roller and the pinch roller following the guide roller in the conveying direction.

Description

FIELD OF THE DISCLOSURE[0001]The disclosure relates to a hose pump.BACKGROUND[0002]Such hose pumps are known, for example, from DE 10 2014 104 320 B1 and DE 102010 000 594 A1. These known hose pumps have a hose bed into which a hose section of a hose bent into a loop can be inserted. The known hose pumps also include a counter support and a carrier disk rotatable relative to the counter support, on whose top a number of pinch rollers and a number of guide rollers are arranged. Both the pinch rollers and the guide rollers are arranged equidistant from each other in the radially outer area of the carrier disk and in the peripheral direction of the carrier disk, one guide roller each being arranged between two consecutive pinch rollers in the peripheral direction of the carrier disk. For example, three pinch rollers and three guide rollers are provided in an embodiment example of the known hose pumps, which have an angular distance of 60° relative to the adjacent pinch roller or guide ...

AI Technical Summary

Benefits of technology

The invention is a modification to a hose pump that prevents the hose from slipping out of the guide groove during installation and ensures reliable breathing of the hose section. The modification involves adding a pinch roller and guide rollers on the carrier disk to guide the hose into the hose bed and fix it in position. This allows for easier and more secure installation of the hose pump. Additionally, it prevents unthreading of the hose section during operation, which improves the pump's service life.

Problems solved by technology

Problems can occur in this case when the hose section is too short.

There is then the risk that the unduly short hose section will be stretched while being threaded and placed under tensile stress, and thereby slip out of the guide groove of the guide roller.

When the hose section inserted into the hose bed is too long, problems can occur during operation of the known hose pumps because the hose section at the output of the hose bed forms a loop protruding above the support surface of the hose bed and is therefore not cleanly guided in the hose bed.

In particular, at very high pump pressures, which can reach up to 20 bar during the intended operation of the hose pump, there is the risk that the downstream end of the hose section inserted into the hose bed will slip out of the guide groove of the guide rollers and thereby be raised from the support surface of the hose bed.

This can mean that the hose section automatically and undesirably unthreads during operation of the hose pump.

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