DE2025017A1 - Movable funnel outlet for grain blower - Google Patents

Description

Description of the movable funnel outlet for the grain blower The invention relates to an outlet for grain blowers, which in spatially cramped Buildings is easy to handle.

On farms, the grain is usually blown with low pressure transported. The grains get a speed in the blower tubes up to 20 m / sec. At the end of the pipeline, the grain therefore had to be delivered @@ st and from Air flow are separated. This happened earlier either with a cyclone or with a discharge head.

Both require a lot of space for the grain to drain off can, especially if it is still to be led to the side with a 45 ° incline, With a grain silo system there is therefore an unused space of at least 2m necessary. The outlet of the cyclone must be as vertical as possible, the discharge head can be a little crooked, it has one Travel up to 45 ° from the vertical. Both of them require a reconstruction of the pipeline necessary if several ilo are to be filled, or there is a distributor with inclined X-ear necessary, which gaps even more height. In addition, the Blow head and even more so the Cyclon creates an air jam that reduces the performance of the blower considerably reduces.

In order to like these disadvantages, I first analyzed the mode of action of the two devices. I noticed that the grain slowed down to 0 first and then falls down by gravity alone. Heiin Cykloim circles that Grain admittedly, but only through gravity it comes out of the opening below0 In fact, the grain only needs to be slowed down to such an extent that the individual Grains don't bounce any more when they hit the heap of grain. The grain should trickle and not "splash".

In order to keep the air congestion as low as possible at my outlet, If I lay a bit free after the end of the pipe, then I directed the grain-air flow into a sheet metal funnel, which has the shape of the jacket of a truncated cone (see sketch 1 ).

The larger opening facing the pipe is ideally a little larger than twice the pipe diameter. The smaller opening needs to be a little smaller Cross-section than the pipeline. This means that most of the fragrance escapes at aO The grain, however, flies by its own momentum, either directly or through diverted the funnel wall there, through the smaller opening further. This lo funnel can also be inclined slightly downwards (approx. 10 °) o This makes the grain steeper routed downwards A second funnel is located through the smaller opening of the first funnel

Funnel pushed, but only so far that between the two still Scent can escape This 2nd funnel can be swiveled around point p so that its the smaller opening points down even more. That smaller opening is still there slightly smaller than that of the first. In a similar way, this could also be done e.g. by means of Chains happen, a 3rd funnel is attached, its smaller opening in turn is slightly smaller (e.g.

Tube # 160mm, end of 1st line 130mm, end of 2nd line 110mm, end of 3rd line 100mm) The Any funnels attached further on are the same as the 3rd funnel.

The cross-sections normally do not need to close any further rejuvenate.

The grain that comes out of the Pipe end comes up, hits the funnel walls and several times, mostly at an acute angle is slowed down gently so that it trickles. The strength of the deceleration you can regulate how many funnels you attach and (or) which cross-section the 3rd (or 4th) funnel has (e.g. sketch 3 d) Since between the end of the pipe and the 1st Trid@ter (Sketch 1 a) most of the air escapes, so will most of the Any dust in the grain at this point was also torn out. It is possible to collect and discharge air + dust here. Through a built-in nozzle-like baffle, the dust separation is significantly improved (sketch 2b) This funnel outlet can now work in many positions.

The pipe end can be up to 150 degrees, horizontally or at any angle be directed downwards (sketch 3c, d, e, f) 0 Since the attached funnel easily are movable, the end of the spout can be moved from a silo to the des next to be relocated. Even a Sil that goes right up to the roof can still work perfectly earth filled (sketch 3c) O It was also found that this funnel outlet the pipeline is protected against clogging 0 If at the cyclone or discharge head the mountain of grain has grown so far that it touches the outlet opening and with it clogged, the whole pipeline is filled with grain in a matter of seconds, what leads to longer business interruptions. The funnel spout, on the other hand, bubbles put the grain over the top of the bottom funnel first. A constipation damming up the grain cannot go to waste at all.

A nozzle-like effect creates the 1st funnel itself at full load, no air accumulation whatsoever (even without a baffle).

On the contrary, it occurs at half load or especially when idling a slight suction that reduces the static air pressure in the Pipeline even lower, the practical test with maize resulted in the following measured values: mm water column measured 2.3 m before the end of the pipe idle full load pipe without outlet 20 44 Funnel outlet 17 44 Outlet head 52 65 Cyclone 72 68 Due to the lower air accumulation a lot more air is conveyed and thus also grain0 In fact one was running certain amount of barley, which used to take 2 # / 2 hours with Cyklon, now in 1 3/4 Hours through the system.

As already indicated above, the first funnel can reach up to + 10 ° be angled downward from the pipe axis.

It is particularly advantageous if the funnel is on one, for example on the The point at the end of the pipe (sketch 4 g) is suspended.

Of course, the deflection of the bracket must be accompanied by a corresponding one Limit stop to a maximum of 20 ° (e.g. at h).

When the pipe is mounted so that the axis around which the funnel is oscillates, lies horizontally, the funnel always points downwards at the right angle. vIf the pipe is mounted in such a way that this axis is vertical, you can use the Swivel the funnel outlet particularly well, for example from one silo to another or across the entire length of a car that is to be loaded.

Claims (3)

Patent claims 1. Outlet for grain blower to slow down the grain and separate it characterized by the air flow in that the air-grain flow at the end of the pipeline is passed into a funnel whose cross-section facing the pipe is larger, however, the cross-section facing away from the pipe is smaller than that of the pipe, over the end of which a second funnel is pushed so far that there is still flow between the two can escape 0 The diameter of this funnel at the weaker end is smaller than that of the 13 funnel. In the same way, further funnels can also be tapered or with the same final diameter. 2 *) funnel outlet according to 1 characterized in that for better Dust separation a baffle is inserted. This baffle has the shape of a short funnel, the cross-section of which is larger than that of the pipe. 3.) funnel outlet according to 1, characterized in that the first Funnel, at a point located at the end of the pipe, is suspended in a pendulous manner The deflection angle is limited.