JPS639962B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a crushing device, and more particularly to a novel device suitable for crushing long fiber bark of cedar, cypress, etc.

Before obtaining wood from logs such as cedar and cypress, the bark is stripped, and the stripped bark itself can be used for other useful purposes by pulverizing or pulverizing it. It will be opened.
However, at present, if long-fiber bark is in a long band-like or string-like state, it cannot be pulverized by conventional pulverizers for bark, etc., and therefore, its effectiveness is limited. It is not being used enough. In other words, conventional bark crushers follow the traditional hammer mill method, in which a large number of small hammers are attached to a hammer case in multiple stages, and the bark that is input is processed using these hammers. It was beaten and crushed. However, with this type of device, when attempting to process long fiber bark of cedar, cypress, etc. that has been peeled into relatively long shapes, the bark always gets entangled with the hammer or the rotating hammer case.
It was something that could not be treated at all.

The present invention makes it possible to effectively process long-fiber bark even when it is supplied in a long state, thereby expanding the possibilities for reprocessing or reusing this type of bark. That is, the apparatus for crushing long fiber bark, etc. of the present invention includes a hammer case provided in a cylindrical casing, at least a pair of vertically elongated hammers rotatably supported above and below the hammer case near the outer periphery of the hammer case, On the other hand, the casing is characterized by having a large number of vertically elongated receiving blades formed inside the casing, and further comprising a discharge port for the material to be processed at the bottom of the casing.

The present invention will be specifically described below based on illustrated embodiments. First, reference numeral 1 is a frame constructed into a flat and elongated table-like shape by combining appropriate steel plates.
A crushing head 2 is provided on one side of the frame 1 so as to stand up, and a motor M serving as a drive source for crushing is mounted on the other end of the upper surface of the frame 1. First, to explain the crushing head 2, a cylindrical discharge chamber 4 is provided on the upper surface of the frame 1, and a cylindrical casing 5 is provided above the discharge chamber 4, and the inside thereof serves as a crushing chamber 6. be. The following device is provided in the crushing chamber 6 to directly perform the crushing action. First, the main shaft 7 extending from the crushing chamber 6 to the center of the discharge chamber 4 and extending inside the frame 1 is rotatably supported by the bottom plate 6' of the frame 1 or the crushing chamber 6 as appropriate. Driven pulley 8 at the lower end of
This is to fix the And this driven pulley 8
Rotation is transmitted from the output pulley 9 of the motor M via the belt 10. On the other hand, this main shaft 7
A hammer case 11 is attached to the upper end side, and this hammer case 11 has, for example, upper and lower flanges 12, and a pin 1 is attached to the outer periphery of the hammer case between the flanges 12.
3, the hammer 14 is rotatably supported. Incidentally, it is preferable that the number of hammers 14 to be installed is small, and in this embodiment, a pair of hammers 14 are provided facing each other in consideration of mechanical balance and the like. And this hammer 14 is the fifth
As shown in the figure, it is relatively long and has a large mass. Furthermore, this hammer case 11
For example, a conical boss 16 that widens toward the end is fixed above the boss 1.
6, two pre-crushing rods 17 are provided in a protruding square shape. This protruding position is preferably provided at a position offset by 90 degrees with respect to the center line connecting the pair of hammers 14. Next, to further explain the casing 5, the upper part of the casing 5 has a downwardly recessed chute 20, and
The receiving blade 2 is approximately at the lower half height on its inner circumference.
1 and 22 are provided. By the way, this Ukeba 2
1 and 22 are formed by dividing the circumference into equal parts so that they can be constructed as a unit, and the pitch is determined by the receiving blade at the position corresponding to the preliminary crushing rod 17, as shown in FIG. Reference numeral 21 makes it possible to make the pitch relatively coarse as shown in FIG. Further, a discharge port 23 is provided in the bottom plate 6' of the crushing chamber 6, so that the crushing chamber 6 and the discharge chamber 4 are communicated with each other. In the discharge chamber 4, the discharge fan 2 is connected to the main shaft 7.
4 is attached below the discharge chamber, and a discharge port 25 that extends in the tangential direction opens at the side circumference of the discharge chamber.

The present invention is embodied as the embodiment described above, and operates as follows to produce bark A.
It is used for pulverizing. First, the motor M is activated by an appropriate switching operation, thereby rotating the main shaft 7. As the main shaft 7 rotates, the hammer case 11 rotates in the crushing chamber 6, and the discharge chamber 4 below it rotates.
In this case, the discharge fan 24 rotates. When the bark A is introduced into the crushing chamber 6 from above the casing 5 under such conditions, first, the preliminary crushing rod 17 rotating in the discharge chamber 4 causes
The bark A, which is often intertwined, begins to unravel and fall downward little by little. When the bark A reaches the position of the hammer 14, the hammer 14, whose working end is directed outward due to centrifugal force, strikes the bark A, and the receiving blade 2
2, the bark A is finely ground. Incidentally, in this case, in the present invention, the hammer 14 is not formed in multiple stages, but only one relatively elongated one is provided, so even if the bark is made of long fibers and remains long, it can be used as a hammer or as a hammer. There is almost no entanglement with the case, and the pieces are crushed one after another smoothly. The bark A thus crushed falls into the discharge chamber 4 from the discharge port 23 opened at the bottom of the crushing chamber 6.
Immediately, it rides on the swirling airflow generated by the rotation of the discharge fan 24 and is blown from the discharge port 25 to be discharged to the outside.

The present invention has the configuration and operating state described above, and has the following effects. Since the hammers are relatively long and have a large mass and are provided in small numbers (two in this example), there is almost no room for the long fiber bark to become entangled with the hammer or the hammer case.
Even this kind of bark, which has been difficult to treat in the past, can be treated smoothly.

It should be noted that since the present invention is capable of processing long fiber bark, which is the most difficult to process, it goes without saying that short fiber bark, which can be processed conventionally, can be processed more smoothly even if the short fiber bark that can be processed conventionally is applied to this apparatus. Furthermore, the material to be treated is not necessarily limited to tree bark, and various other industrial wastes can be treated.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing a crushing device for long fiber bark, etc., which is the present invention, Fig. 2 is a longitudinal sectional side view of the same;
FIG. 3 is a partially cutaway plan view of the same as above, FIGS. 4A and 4B are plan views showing the receiving blade portion, and FIG. 5 is an exploded perspective view showing the hammer portion. 1; frame, 2; crushing head, 4; discharge chamber,
5; Casing, 6; Grinding chamber, 11; Hammer case, 14; Hammer, 17; Preliminary grinding rod, 2
1, 22; Ukeba.

Claims (1)

[Claims] 1. A hammer case is provided in a cylindrical casing, and at least a pair of vertically elongated hammers are rotatably supported on the upper and lower sides of the hammer case near the outer periphery of the hammer case, while a large number of vertically elongated hammers are provided inside the casing. 1. An apparatus for crushing long fiber bark, etc., characterized in that a receiving blade is formed, and the bottom of the casing is further provided with a discharge port for the material to be processed.