Making an extruder Pellets

[bernardd]

Thank you: It is interesting, but these granules are not with the standard diameter of 6mm and that seems constrained by the principle of pressing.

I'm afraid that the pellet boilers on the market cannot use them ...

[chatelot16]

diameter 15 the machine is described: to make another one you can make the diameter you want

I do not see the point of putting 36 plungers which bring out the pelet in all directions

I prefer to start with a single piston and a good old crankshaft

when the flow of a single piston will no longer be enough I will put several, but parralele all together with a single large rod

[Ahmed]

Chatelot16 wrote:

I do not see the point of putting 36 pistons which bring out the pellets in all directions.

Compared to a system of rod and parallel pistons, the drive effort is better distributed over time, so the power is less (but this is at the expense of technical simplicity).
Each cylinder is apparently complex to produce compared to a conventional die hole *, which perhaps explains the unorthodox diameter chosen.

* the classic die holes are not, however, simple cylindrical holes: in longitudinal section, there is first a compression truncated cone, then another shorter truncated cone at the outlet, if I remember correctly.

[chatelot16]

better distributed in time does not change the average power

with a good flywheel the blow of a single piston is not a problem

the output cylinders seem a little short: it seems to me that it will work halfway if it was longer: hence the idea of ​​the single cylinder, or multiple all parallel

[bernardd]

Hello,

In the pellet mills visible on the internet, there are 2 types:
- flat die;
- ring die.

The ring die seems to me easier to make, in fact, even if today they seem larger and more expensive.

In fact, it is the same principle as a sausage cahir mill, but instead of putting the exit "holes" in the axis, they are drilled on a ring around the end of the cylinder.

Suddenly, the pressure is easier to apply.

Note: the end of the post seems to have disappeared :-( It was:

Does anyone have practical experience with ring die presses?

[Ahmed]

Ring die presses are more substantial equipment than flat presses, both in terms of production and investment.
I do not at all believe that the following statement is true:

The ring die seems to me easier to do

The number of holes is greater than on a disc and are more difficult to make axially (do not forget that these are not simple cylindrical holes!).

Unlike the "flat die", in the "ring die" it is the cylinder which is driven and the 3 pressure rollers which are fixed; power is supplied from one side.

In these 2 systems, the mechanical constraints are considerable and explain why the use of low-end granulation devices (intended for the densification of food) is the source of many disappointments.

[wr426f]

Hello everyone,

I unearth the subjects for the ninth time
I would like to make a pellet press to do tests like on the site www.aupoele.fr
I am looking for a 200mm / 6mm matrix and roller skates
I did call oliotechnologie, but they don't sell me the parts because I'm not a customer of theirs
Do you have an address to buy the parts or an oliotechnology customer who can get the parts through the customer area?
Thank you in advance

wr

[lv13r]

hello wr426f
will see at this address

http://pellet.over-blog.com/categorie-527999.html

the guy imports press from China and there is a contact at the bottom of the page
we are never
lionel

[wr426f]

hello lionel,

thanks for the links,
I sent an email to find out if they sell the pieces
I will communicate their answer on the forum

wr

[dedeleco]

Finally, remarkable, in Germany, not in China, after an investment comparable to a stove, you can make your pellets yourself:
It becomes possible to make its own pellets with free plant waste everywhere at home and elsewhere, neighbors and waste! with this remarkable PelletMaker PELLETIERE that takes all pieces of wood wholesale, reduces them to powder and spring granules for an investment of 5600 € less than a boiler !!!
http://pellet-mill.de/shop/article_PM%2 ... 03.0E-S%26
http://cgi.ebay.fr/PelletMaker-PELLETIE ... 563fcabc96
See the videos !!!
only problem, 380V engine to change to 220V.
Finally it is possible to have just the basic parts for cheap (less than 300 €) and tinker his press if you have mechanical equipment.