JPH038828B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a single toggle crusher used for crushing solid materials.

[Prior Art] Conventionally, as is widely known, in this type of single toggle crusher, a crushing chamber is formed with fixed teeth and movable teeth corresponding to the fixed teeth, and the top of the movable teeth is It has an eccentric shaft, and a toggle plate is swingably attached to the bottom of the movable tooth between it and the toggle block. The combination of the rotational movement of the eccentric shaft and the oscillating movement of the toggle plate causes the movable tooth to perform a oscillating movement, with an elliptical movement near the supply port of the crushing chamber and a fixed movement near the discharge port. This is a crescent-shaped movement that slopes upward toward the teeth, and a combined vertical and horizontal movement is applied at all points in the crushing chamber to crush the material.

The swinging motion of the movable teeth is such that the opening process and the closing process are repeated at a constant cycle, and the crushing gap at the discharge port is defined by the opening side in the opening process and the closing side in the closing process. The difference between this and the closing side corresponds to the swing stroke. When crushing using a single toggle crusher,
When adjusting the crushing gap by expanding or contracting it as necessary, the opening side is adjusted by moving the position of the toggle block, the swinging stroke remains unchanged, and the closing side is the same as the opening side. It is uniquely determined based on the difference from the dynamic stroke.

The swinging stroke of a movable tooth is determined by the eccentric distance of the eccentric shaft related to the swinging movement, the distance between the eccentric shaft center and the junction with the toggle plate at the bottom of the movable tooth, the length of the toggle plate, and the crushing of the toggle block. It is determined by geometrical conditions such as the angle of inclination between the moving direction and the horizontal plane when adjusting the gap, and if the angle of inclination is approximately within 30 degrees, the difference in the swing strokes is small.

When crushing the crushed materials using the above-mentioned conventional single toggle crusher, especially when crushing to obtain crushed products with fine particle size,
It is adjusted to reduce the crushing gap, but as mentioned above, since the swing stroke of the movable teeth is regulated, the open side and the closed side are simultaneously reduced by almost the same distance, and such crushing The fracture is fractured under the gap.

[Problems to be Solved by the Invention] However, in the above conventional single toggle crusher, the difference in the swing stroke of the movable teeth when adjusting the crushing gap is small, so it is difficult to adjust the crushing gap to a relatively narrow one. In this case, the ratio of reduction on the closed side to the open side increases, and the value of (opening side crushing gap)/(closed side crushing gap) becomes large. When crushing is carried out under such a crushing gap, as the crushing of the crushed material progresses in the crushing chamber, the voids between the crushed particles decrease, resulting in the occurrence of a packing phenomenon, which impedes the smooth discharge of crushed products. In addition to this, there was a problem in that the single toggle crusher airframe was subject to excessive mechanical loads. On the other hand, when crushing materials using a single toggle crusher whose swing stroke of the movable teeth inherently has a small geometrical condition, crushing is performed under a relatively wide crushing gap. However, there was a problem in that the movement of the crushed material in the crushing chamber was inactive due to insufficient rocking movement of the movable teeth, resulting in a significant reduction in the crushing capacity of the single toggle crusher.

The present invention solves these conventional problems, and even when crushing materials by adjusting the crushing gap to be relatively narrow, crushing can be carried out with smooth discharge of crushed products from the crushing chamber. Therefore, it is an excellent single material that not only does not impose excessive mechanical load on the machine body, but also does not significantly reduce its crushing capacity even when adjusting the crushing gap to be relatively wide. The purpose is to provide toggle crusher.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method in which the moving direction of the movable toggle block of the single toggle crusher when adjusting the crushing gap has an inclination of approximately 30° or more with respect to the horizontal plane. It is designed to form a corner.

[Function] The present invention has the following effects due to the above configuration. In other words, when adjusting to reduce the crushing gap of the single toggle crusher, the swing stroke of the movable teeth can be gradually reduced, resulting in a significant reduction in the closing side compared to the opening side. By suppressing the increase in the value of (open side crushing gap)/(closed side crushing gap) to a small extent, as the crushing progresses in the crushing chamber, the packing phenomenon can occur without significantly reducing the voids between crushed particles. Since crushing is performed with smooth ejection of crushed products from the crushing chamber and no excessive mechanical load is applied to the machine body, wear and tear on the machine body can be reduced.
Furthermore, when crushing materials with a relatively wide crushing gap, the swinging stroke of the movable teeth can be increased as the crushing gap increases, so that the swinging movement of the movable teeth is sufficiently performed. As a result, the movement of the crushed material in the crushing chamber becomes active, and the crushing capacity of the single toggle crusher can be significantly increased.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the configuration of an embodiment of the present invention. In FIG. 1, 10 is a single toggle crusher, 14 is a fixed tooth, and 1 is a single toggle crusher.
2 is a movable tooth corresponding to the fixed tooth 14, and the fixed tooth 14 and the movable tooth 12 form a crushing chamber 15. An eccentric shaft 26 is provided at the top of the movable tooth 12, and o and o represent the center of rotation of the eccentric shaft 26.
e and e respectively indicate eccentric axes. Movable tooth 12
A toggle plate 20 is inserted between the receiving seat 18 and the toggle block 16, and is attached to the bottom of the toggle plate. It is installed so that it can move freely. The toggle block 16 is mounted on a receiving seat 27 provided on the side plate of the single toggle crusher 10, and its position is moved when adjusting the crushing gap. When the necessary adjustment of the crushing gap is completed, the adjustment plate 29 is inserted into the gap between the end face of the rear frame 28 of the single toggle crusher 10 and the end face of the toggle block 16, and under this condition, the toggle block 16 is is fixed using the wedge of the presser seat 30. The receiving seat 27 is provided on the side plate so that the direction of movement of the toggle block 16 during the crushing gap adjustment described above is at an angle of inclination of approximately 30° or more with respect to the horizontal plane H-H.

FIG. 2 is a schematic diagram showing the operation of the embodiment shown in FIG. 1. In FIG. 2, when the eccentric shaft 26 rotates around rotation centers o and o, the eccentric axes e and e exhibit eccentric movement under a predetermined eccentricity. Due to this eccentric movement, the movement is transmitted to the movable teeth 12, and the toggle plate 20 performs a swinging movement using the end on the toggle block 16 side as a fulcrum. The combination of the rotational movement of the eccentric shaft 26 and the swinging movement of the toggle plate 20 gives a swinging motion to the movable tooth 12, and the opening process and the closing process are repeated at a constant cycle. There is. The moving direction of the toggle block 16 when adjusting the crushing gap is shown by the line A-A, and the horizontal plane H-
It has an inclination angle θ with respect to H.

FIG. 3 is an explanatory diagram of the crushing gap in one embodiment shown in FIGS. 1 and 2. FIG. In FIG. 3, W _p indicates the open side of the crushing gap, and W _c indicates the closed side, and the difference between the open side W _p and the closed side W _c corresponds to the swing stroke S.

FIG. 4 shows the relationship between the crushing gap (opening side) W _p of the single toggle crusher and the swing stroke S, which is affected by the inclination angle θ. That is, when comparing the prior art in which the inclination angle θ is approximately 30° or less and the present invention in which the inclination angle is approximately 30° or more, in the conventional technology, even if the crushing gap (opening side) W _p is changed, While the change in the swing stroke S is slight, in the present invention, when the crushing gap (opening side) W _p is changed, the change in the swinging stroke S is remarkable, and the crushing gap (opening side) changes significantly. It is clearly shown that as W _p is reduced, the swing stroke S can be made smaller than in the prior art.

In FIGS. 1 to 4, when adjusting the crushing gap W _p of the single toggle crusher 10 to be narrower, the swing stroke S of the movable teeth 12 can be reduced, so that the reduction ratio on the opening side is reduced. As the crushing progresses in the crushing chamber 15 without causing a significant reduction in the shrinkage ratio on the closing side, the occurrence of the packing phenomenon is greatly avoided without significantly reducing the voids between crushed particles, and the flow from the crushing chamber 15 is smooth. Since the crushing is performed while the crushed products are being discharged, and the machine body is not subjected to excessive mechanical load, wear and tear on the machine body can be reduced. Furthermore, when crushing material by adjusting the crushing gap W _p to be relatively wide, the swing stroke S of the movable teeth 12 can be increased as the crushing gap W _p increases. As the dynamic movement is sufficiently performed, the movement of the crushed material in the crushing chamber 15 becomes active, and the crushing capacity of the single toggle crusher 10 can be significantly increased.

The embodiments of the present invention are not limited to the above-described embodiments, and many embodiments can be adopted for the structure for determining the position of the toggle block, the toggle plate, etc.

[Effects of the Invention] As is clear from the above embodiments, the present invention can change the swing stroke of the movable teeth of the single toggle crusher, so that crushing is performed in a relatively narrow crushing gap. In this case, the crushing action in the crushing chamber can be improved, the occurrence of packing phenomenon can be avoided, and crushing can be performed with smooth discharge, reducing wear and tear on the machine body. Furthermore, as the crushing gap increases, the swinging stroke of the movable teeth can be increased, resulting in active movement of the crushed material within the crushing chamber, which has the excellent effect of significantly increasing the crushing capacity of the single toggle crusher. is played.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of a single toggle crusher according to an embodiment of the present invention, Fig. 2 is a schematic diagram of the same device, Fig. 3 is an explanatory diagram of the crushing gap of the device, and Fig. 4 is the same. FIG. 3 is an explanatory diagram comparing the relationship between the crushing gap and the swing stroke of the device with that of the prior art. 10...Single toggle crusher, 16...Toggle block, A, A...Movement direction of toggle block, θ...Inclination angle, H, H...Horizontal plane.

Claims (1)

[Claims] 1. A single toggle crusher characterized in that the moving direction of the movable toggle block of the single toggle crusher when adjusting the crushing gap forms an inclination angle of approximately 30° or more with respect to a horizontal plane.