Hay blower
The hay blower , also known as a paddle wheel conveyor or hay blower , is an agricultural device that is used to convey dry material, especially hay and straw .
Structure and functionality
Impeller
These hay blowers have an impeller with mostly 4 blades. It runs with a horizontal axis in a housing that has a radial or tangential outlet of approx. 40 to 50 cm for connecting pipes. The inlet is on the front. The impeller is driven by a 6 to 15 HP three-phase motor . By rotating the blades, the arid crop is thrown outwards and, with the help of the resulting air flow, it is transported through the outlet through the pipes to the desired location.
Injector
Hay blowers based on the injector principle work like a jet pump : a blower generates an air flow that is injected into the conveying flow below. This creates a negative pressure at the feed hopper and the hay is carried away or blown away by the conveying flow without passing through the fan. This type of conveyor fan is suitable for the transport of various goods (grain conveyors are also offered) and is hardly prone to failure.
Areas of application
At the beginning of the 1930s, this form of transport began to rise in the form of forage storage in agriculture . The blower was used to transport the straw from the threshing machine and to store the hay in the barn or the hayloft. The development of the loading wagon in the early 1960s encouraged the use of such blowers. Almost every farm had a hay blower. The fan is usually fed with a pitchfork. Hay blowers are of less importance in the more mechanized agriculture, since baling and roller presses compact the hay in the field and thus also simplify storage.
Conveyor fans are still used in agriculture to transport chaff, chaff and grain.
literature
- Agriculture: Volume 3 - Agricultural engineering and construction . BLV Verlagsgesellschaft, Munich, ISBN 3-405-14349-7
- DLZ, March 1957 edition, 8th volume . Bay. Landwirtschaftsverlag GmbH, Munich
Individual evidence
- ↑ http://www.neuero-farm.de/neuero2/published/binary/hoch.pdf Grain blower from NEUERO Farm- und Fördertechnik GmbH