JPH0243490Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a crusher that feeds raw materials into the gap between a fixed surface and a movable surface provided with protrusions, and crushes them under pressure between both surfaces, and is capable of producing crushed products with specific product dimensions at a high yield. It is about a crusher that produces well.

FIG. 1 shows a side sectional view of a geo crusher, which is an example of a conventional crusher. In such a Jyo crusher, a space having an approximately triangular cross section formed between a fixed Jyo plate 1 constituting a fixed surface and a swing Jyo plate 2 constituting a movable surface constitutes a crushing chamber 3 into which raw materials are supplied. and a swing jyo 4 having a swing jyo plate 2.
is swingably attached to a drive shaft 5 that rotates eccentrically (eccentricity e), and includes a toggle seat 6 attached to the lower end of the swing gear 4 and a toggle seat block 8 fixed to the main body frame 7. Seat 9 is connected by a toggle plate 10 that rolls into contact with both seats 6 and 9. Therefore, the drive shaft 5 rotates and the swing gear 4
When vertical movement occurs, the swinging jaw 4 whose direction of swing is regulated by the toggle plate 10 swings around its swing center 11, and the crushing chamber 3
By changing the outlet gap 18 of the crushing chamber 3
The raw material caught in the plate is crushed between the plates 1 and 2 and taken out from the outlet gap 18 downward.

If the crushing surfaces of the fixed Jyo plate 1 and the swing Jyo plate 2 were flat, as shown in FIG. The raw material is once clamped and crushed between the fixed surface (fixed surface) of the stationary surface, the fixed surface, and the movable surface, ie, the swing surface plate 2 (Fig. 3). When the distance d between the loading points, which are the points to be clamped, becomes further smaller, the clamping and crushing of the raw material is repeated again using the Jyo plate 1 having a fixed surface and the swinging Jyo plate 2 having a movable surface (Fig. 4). As shown by curve P in Figure 5, products with a wide range of product size distribution are produced,
In order to obtain a product with a certain narrow range of product dimensions (for example, product dimensions that pass through sieve sizes a to b), it has been necessary to sieve the product again. For this reason, it has the drawbacks of poor product yield and low power efficiency. Such drawbacks also occur in crushing machines such as a gear crusher and a cone crusher, which are constructed on the same crushing principle as the jaw crusher.

The purpose of the present invention is to solve the above-mentioned drawbacks of the prior art and to produce products of specific product dimensions with high yield. In a crusher that feeds into a gap and crushes with pressure between both sides, the height of the protrusion at a certain loading point level is 0.25x (however, x
is the distance between loading points in the horizontal direction at a certain loading point level above), the width of the protrusion is 0.5x or less at the center of the protrusion height, and the width of the recess between the protrusions is 0.5x or more and 2x or less The present invention provides a crusher including a tooth plate having a protrusion on at least one of the movable surface or the fixed surface.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention.

FIG. 6 is a schematic side view of a fixed Jyo plate and a swing Jyo plate that can be used in the crusher according to the first embodiment of the present invention, and FIG.
8 is an enlarged view of the section taken along arrow B in FIG. 7, FIG. 9a is a front view of the tooth plate according to the above embodiment, and FIG. FIG. 10 is a side sectional view of the crushing part of the cone crusher, which is the crusher according to the third embodiment of the present invention,
FIG. 11 is a sectional view taken along the line C-C in FIG. 10;
FIG. 12 is a partial sectional view taken along the line A--A in FIG. 6, showing the state of crushing of the raw material.

Note that the same reference numerals are used to describe the same elements as those used in the conventional example shown in FIG.

First, the Jyo crusher, which is a crusher according to the first embodiment of the present invention, will be explained based on FIGS. 6 to 9a. As shown in FIGS. 6 and 7, it has projections 14 and is fixed. A fixed Jyo plate 1, which is an example of a toothed plate forming a surface, and a swinging Jyo plate 2, which is an example of a toothed plate having protrusions 15 and forming a movable surface, crush the raw material 16 with the protrusions 14 and 15 facing each other. It is placed in a predetermined position. FIG. 8 shows details of the projection 15. That is, the protrusion 14 at the loading point level, which is the height from the outlet gap 18 (first illustration) to a certain loading point when the swing jaw plate 2 is swung by the drive shaft 5 (first illustration). and x is the distance between the loading points in the horizontal direction of the protrusion 15 (the distance between the apex of the protrusion when the movable surface is closest to the fixed surface), then the shape of the protrusion 15 has a height h of 0.25x or more The width l is at the center of the protrusion height.
0.5x or less, and the width w of the recess between the protrusions is
It is configured to be greater than or equal to 0.25x and less than or equal to 2x.
Here, the above height h is 0.25x or more, and the width of the recess w
The reason for setting 0.5x to 2x is to ensure that the raw material crushed at that level is smoothly discharged from the space 17 of the recess between the protrusions, and the width l of the protrusion is set to 0.5x or less. This is because if the value is greater than this, the shape of the crushed surface becomes close to a flat state, which approaches a flat compressed state and the product size distribution becomes large.

However, in order to crush raw materials, the above-mentioned distance between loading points x generally becomes smaller toward the bottom of the crushing chamber 3, so in the swing jaw plate 2 according to the above embodiment, As shown in a, the pitch P of the projection 15 and the projection 15
The height h and width l are configured to become smaller toward the bottom.

Incidentally, as shown in FIG. 9b showing a second embodiment of the present invention, the protrusions 15 are roughly hemispherical, truncated conical, cylindrical, etc. and are arranged in a scattered manner to form a swing jyo plate. Swinging plate 1 that reduces the pitch P and size of the protrusion toward the bottom of 12a
It is also possible to use 2a.

The above description has been made of the swing jaw plates 2 and 12a that constitute the movable surface, but the fixed jaw plate 1 that constitutes the fixed surface is also configured in the same way.

Hereinafter, the operation of the embodiment shown in FIGS. 6 to 9a will be further explained.

A swinging Jyo plate 2 and a fixed Jyo plate 1 are oscillated by a drive shaft 5 (first illustration).
When the raw material is introduced into the crushing chamber 3 formed between
As shown in the figure, the raw material is roughly crushed and escapes to the space 17a, but the roughly crushed raw material that escaped to the space 17a is not crushed again by the projections 15a at that level position, and the raw material is crushed in the lower part. When the raw material falls to the level of 1, it is crushed again by the second stage projection 15b, and the crushed raw material escapes to the second stage space 17b again. First, it falls to a lower level, moves, and is crushed again by the third stage projection 15c. The raw material crushed by the projections 15c passes through the third stage space 17c and is discharged from the outlet gap 18 (shown in the first figure).

Curve Q in FIG. 5 shows the relationship between the percentage of raw material passing through the screen and the size of the screen when the raw material is crushed using the crusher according to the above example, and for the same product size (b to a). , the conventional (B-
Products are being manufactured with a much larger production ratio of (B'-A')% than A)%.

In the above embodiment, both the fixed jaw plate 1 and the swing jaw plate 2 were provided with projections, but only one of the fixed jaw plate 1 and the swing jaw plate 2 was provided with the projections 14 or 15. It is also possible to provide one side and the other side to be flat. In this case, it is necessary to secure a sufficient space 17 for releasing the raw material after crushing, so it is desirable that the height h of the protrusion in FIG. 8 is 0.5x or more.

10 and 11 show cross-sectional views of the crushing part of a cone crusher having a fixed surface 1a and a movable surface 2a, which is a crusher according to a third embodiment of the present invention. As shown in Fig. 11, the height h of the protrusions on the movable surface 2a, the width l at the center of the protrusion height, and the width w of the recess between the protrusions are as follows with respect to the distance x between loading points in the horizontal direction at a certain level: The relationship is the same as in the case of the jaw crusher. However, in this embodiment, since the protrusion is provided only on the side of the movable surface 2a, it is desirable to set h to 0.5x or more, as described above. Although the above-mentioned embodiment has been explained with respect to a cone crusher, the present invention is also applicable to a gyratory trictus with the same structure.

As described above, the gist of the present invention is to provide a crusher that supplies raw materials to the gap between a fixed surface and a movable surface and crushes them with pressure between both surfaces.
The height of the protrusion at a certain loading point level is 0.25x or more (where x is the horizontal distance between the loading points at the above-mentioned certain loading point level) and the width of the protrusion is 0.5x at the center of the protrusion height. A crusher comprising a tooth plate having protrusions on at least one of the movable surface or the fixed surface, the width of the recess between the protrusions being 0.5x or more and 2x or less. Because of this, products with the required product dimensions can be produced at a high rate, resulting in a high product yield.Furthermore, since the production of products with unnecessary product dimensions can be suppressed, the required power is small. .

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a Jyo crusher which is an example of a conventional crusher, Figs. 2, 3 and 4 are side sectional views of a Jyo plate showing the state of crushing raw materials according to the conventional example, and Fig. 5. 6 is a graph showing the raw material passage percentage with respect to the sieve screen size, FIG. 6 is a schematic side view of a fixed Jyo plate and a swing Jyo plate that can be used in the crusher according to the first embodiment of the present invention, and FIG. 6 is a cross-sectional view taken along the line A-A in FIG. 6, FIG. 8 is an enlarged view of the section taken along arrow B in FIG. 7, FIG. 9 a is a front view of the tooth plate according to the above embodiment, and FIG.
10 is a plan view of a tooth plate that can be used in a geo crusher, which is a crusher according to a second embodiment of the present invention, and FIG. side sectional view,
FIG. 11 is a sectional view taken along the line C-C in FIG. 10;
FIG. 12 is a partial sectional view taken along the line A--A in FIG. 6, showing the state of crushing of the raw material. (Explanation of symbols) 1...Fixed side Jyo plate (fixed surface), 2,
12a...Swing Jyo plate (movable surface),
14, 15... Protrusion, 16... Raw material, 17... Space (recess), h... Height of the protrusion, w... Width of the recess between the protrusions, l... Width at the center of the height of the protrusion.

Claims (1)

[Scope of utility model registration request] In a crusher that feeds raw material into the gap between a fixed surface and a movable surface and crushes it with pressure between both surfaces, the height of the protrusion at a certain loading point level is 0.25x or more, and the width of the protrusion is equal to or greater than the protrusion height. A tooth plate is provided on at least one of the movable surface or the fixed surface, the protrusion having a width of 0.5x or less at the center and a recess width between the protrusions of 0.5x or more and 2x or less. Characteristic crushing machine. However, x here is the distance between the loading points in the horizontal direction at the above-mentioned certain loading point level.