JPH0327192B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a pellet mine for producing pelleted feed for livestock, and particularly to a pellet machine suitable for producing pelleted feed with a low dust content.

<Conventional technology> Conventionally, pellet machines that produce feed solidified in the form of pellets feed pulverized feed materials supplied from a hopper into an agitation feeder consisting of a screw feeder, an agitation feeder, etc., which inhales steam. The feed was heated and pressurized, extruded through an annular die, and the extruded string-like feed was cut into predetermined lengths to produce pellet feed (an example of such a pellet machine). An example of this is the device disclosed in Japanese Unexamined Patent Publication No. 52-38375).

<Problems to be solved by the invention> However, in a pellet machine with such a conventional configuration, the adhesiveness between the raw material particles of solidified pellet feed is low, and the pellets rub against each other during transportation of the pellet feed. There was a problem that dust was generated and pelleted feed was consumed.

Therefore, in general, the same pellet machine is used twice.
The pellet feed extruded with one pellet machine is further compressed with another pellet machine to promote gelatinization of the raw material, increase the stickiness of the raw material particles themselves, and then extrude the feed again. Pellet feed with good dust content was being produced.

Therefore, there have been problems in that the cost of equipment for producing pelleted feed increases and the installation area of the equipment increases.

<Means for Solving the Problems> The present invention has been made to solve the above problems, and uses a hopper provided at the top of the machine body to agitate and transfer the raw material from the hopper and heat it. an agitation supply device equipped with pressure means;
a first annular die that is provided adjacent to the agitation supply device and performs primary extrusion molding of the raw material supplied from the agitation and supply device; This pellet machine is equipped with a second annular die equipped with a cutter for kneading and secondary extrusion molding the supplied primary extrusion molded product and forming pellets.

<Function> The present invention is configured as described above, and the raw material inputted from the hopper is heated and pressurized by the stirring supply device to be cooked under pressure, and is stirred and mixed to form the first annular Primary extrusion molding is performed by a die and extruded as a primary extrusion molded product.

Subsequently, the primary extrusion molded product is kneaded in a second annular die, subjected to secondary extrusion molding, and cut into predetermined lengths to form pellet feed.

<Example> An example of the present invention will be described below with reference to FIGS. 1 and 2.

In Fig. 1, reference numeral 1 denotes the body of the pellet machine, above which a hopper 2 is disposed, and below the hopper 2, a screw feeder 6 and an agitation feeder 10 constituting an agitation supply device 5 are connected and disposed. It is set up. Furthermore, a first annular die 20 is disposed at one end of the stirring feeder 10, and a second annular die 30 is disposed below the die 20, connected to it by a chute pipe 26.

The screw feeder 6 has one end connected to the lower part of the hopper 2, and is connected to the motor 8.
Raw material A was supplied from hopper 2 by
is configured to be able to supply a fixed amount to the connection port 7 at the other end.

The stirring feeder 10 is provided below the screw feeder 6, and one end thereof is connected to the screw feeder 6 through a connecting port 7. This stirring feeder 10 is connected to a motor 1 via a transmission mechanism 16.
It has a shaft 11 driven by a shaft 8, and a number of paddles 15 are provided on the shaft 11. Further, in the stirring feeder 10, a large number of steam pipes 15, which are heating and pressurizing sources connected to a steam supply source (not shown), are arranged at equal intervals. This steam pipe 15 is provided with an addition nozzle (not shown) for adding oil, fat, molasses, etc. When oil, fat, molasses, etc. are added to this addition nozzle, they become atomized by steam pressure. Thus, it is formed so that it is evenly distributed within the stirring feeder 10. And stirring feeder 10
is configured to blow steam into the raw material A inserted through the connection port 7, stir and mix it while heating and pressurizing it, and transfer it to the other end of the stirring feeder 10.

The first annular die 20 is made of a thick annular member, and is provided with a large number of forming holes 21 extending radially therethrough. One side of the annular opening of the first annular die 20 is connected and fixed to the downstream opening of the stirring feeder 10 by an annular connecting member, and the other side of the annular opening is fixed by a guide cover 24. covered. Furthermore, inside the first annular die 20,
Three rollers 22 are arranged, and the roller 22
is rotatably supported by a rotating plate 23 that is provided at the end of the shaft 11 and rotates together with the shaft 11. The three rollers 22 rotate together with the rotary plate 23 and roll due to frictional engagement with the inner wall of the first annular die 20, and the agitation feeder 10
It is formed so that the raw material A fed from the molding hole 21 is compressed and a string-like material B, which is a primary extrusion molded product, is primarily extruded from the molding hole 21. In addition, the first annular die 2
0 is covered with a cover 25 that is open at the bottom, and a string-like object B is inserted into the bottom opening of the cover 25.
A chute tube 26 is provided which guides the annular die 30 to the annular die 30 .

In the embodiment, the second annular die 30 is made of a thicker annular member than the first annular die 20, and is provided with a large number of forming holes 31 extending radially through the second annular die 30. This second annular die 30 is configured to be rotationally driven by a motor 34 via a deceleration mechanism 33, and is rotatably supported inside by a support member (not shown) fixed to the body 1. At the same time, two rollers 32 are provided that rotate while frictionally engaging with the inner wall of the second annular die 30. Further, a cutter 40 is disposed on the outer circumference of the second annular die 30, parallel to the outer wall of the second annular die 30, and whose distance from the outer wall can be adjusted. Furthermore, a cover 35 having an opening 36 below is provided to cover the cutter 40 and the second annular die 30. And the chute pipe 26
The string B introduced into the second annular die 30 through the inner wall of the second annular die 30 and the roller 3
The pellets C are kneaded by frictional engagement with 2, subjected to secondary extrusion molding through a forming hole 31, and the extruded secondary molded product is cut into a predetermined length by a cutter 40 to form pellets C. .

Next, the operation of the pellet machine configured as described above will be explained.

When the motors 8, 18, and 34 are powered on,
The screw feeder 6, stirring feeder 10, roller 22, and second annular die 30 rotate. When raw material A is put into the hopper 2, it falls into the screw feeder 6, is transferred by the screw feeder 6, and is quantitatively supplied to the stirring feeder 10 through the connection port 7. . At this time, the raw material A in the hopper 2 is filled so as to block the input port to the screw feeder 6, and the raw material A is continuously replenished to maintain this state.

Then, the raw material A supplied to the stirring feeder 10
fills the connecting port 7, and the preceding raw material A
are inserted into each forming hole 21 of the first annular die 20 at the end of the stirring feeder 10. In this state, steam is introduced into the stirring feeder 10 from a large number of steam pipes 15, and the inside of the stirring feeder 10 is uniformly heated and pressurized. At this time, if necessary, oil, fat, molasses, etc. are added to the addition nozzle provided in the steam pipe 15, and the raw material A is impregnated with the atomized oil, fat, molasses, etc. almost uniformly. As a result, stirring feeder 1
The temperature of the raw material A in the raw material A is increased, the material is softened, the viscosity is adjusted, and the material A is fed to the first annular die 20 while being stirred and mixed without becoming lumpy.

The raw material A that has progressed sequentially from the stirring feeder 10 into the first annular die 20 is compressed by the roller 22 that rotates around the inner wall of the first annular die 20.
As it generates frictional heat and becomes alpha, the molded hole 21
inserted into. Then, primary insertion molding is performed through the forming hole 21, and the string-like material B is sequentially extruded to the outside of the first annular die 20, and the string-like material B is guided to the shute pipe 26 and then inserted into the second annular die 20. It is fed to an annular die 30.

The string material B supplied to the second annular die 30 is
Roller 3 driven by rotating second annular die 30
2, the mixture is kneaded to generate frictional heat to promote gelatinization, and then inserted into the molding hole 31. Then, it is subjected to secondary extrusion molding through the forming hole 31, and sequentially extruded to the outside of the second annular die 30 as a string-shaped secondary extrusion molded product. While growing in length, this secondary extrusion molded product rotates together with the second annular die 30, reaches the location where the cutter 40 is placed, and is cut by the cutter 40 into pellets C of a predetermined length. . Then, the pellets C fall downward and are taken out from the opening 36, and are transferred to a drying step (not shown).

Note that this invention is not limited to the above description and illustrated examples, and its embodiments can be changed without departing from the technical idea of this invention.

<Effects of the Invention> As explained above, the pellet machine of the present invention includes a hopper provided at the upper part of the machine body, an agitation supply device that agitates and transfers the raw material from the hopper and is equipped with heating and pressurizing means, and a A first annular die that is provided adjacent to the device and performs primary extrusion molding of the raw material fed from the agitation supply device; The structure is equipped with a second annular die equipped with a cutter for kneading and secondary extrusion molding of the next extruded product and forming pellets, so the input raw materials are heated and pressurized, The annular die and the second annular die continuously
Since the pellets are repeatedly extruded, gelatinization of the raw materials is promoted, and pellet feed with a low dust content can be produced without the need for a binder.

Further, since the first annular die and the second annular die are provided close to each other, cooling of the raw material during processing is reduced, and heat loss can be reduced.

Furthermore, since the first and second annular dies are installed on one machine, the device can be made compact, and compared to the conventional case where two pellet machines are installed together, the device cost can be reduced, and the device footprint can be reduced. can be halved.

Furthermore, by continuously extruding twice,
This has the effect that raw materials with a high oil and fat content, which are difficult to form into pellets using conventional equipment, can be easily formed into pellets.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of a pellet machine according to an embodiment of the present invention, and FIG. 2 is an enlarged partial sectional view of the first and second annular die portions thereof. 2... hopper, 5... stirring supply device, 6...
Screw feeder, 10... Stir feeder, 2
0...first annular die, 30...second annular die.

Claims (1)

[Scope of Claims] 1. A hopper provided at the upper part of the machine body, an agitation supply device that agitates and transfers the raw material from the hopper and is equipped with heating and pressurizing means, and a hopper provided adjacent to the agitation supply device. a first annular die that performs primary extrusion molding of the raw material fed from the stirring supply device; and a first annular die provided near the first annular die;
A second annular die equipped with a cutter for kneading and second extrusion-molding the primary extrusion molded product supplied from the annular die and forming pellets.