JPS6014505Y2 - crushing equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a crushing device having a jaw crusher, and more particularly to a crushing device that improves the grizzly used in the raw ore supply section and prevents clogging of the grizzly.

The jaw crusher supplies the raw material ore between a fixed jaw plate and a swinging jaw, and crushes the raw material by applying pressure between the two jaws. As a device for supplying raw ore, a device having an apron feeder 1 and a fixed grizzly 3 as shown in FIGS. 1a and b is conventionally known. 2
It rolls down from the apron feeder 1 onto the grizzly 3, rolls on the grizzly 3, and is further supplied to a jaw crusher (not shown) located in the lower front.

Grizzli 3 is a lattice-shaped plurality of Grizzli bars arranged in parallel at regular intervals, and the raw stone 2a smaller than the gap 5 between Grizzly bars 4 falls directly downward from this gap and forms a grid with a certain size. Only the above raw stones are supplied to the jaw crusher.

In addition, as shown in FIG. 2, as another conventional raw ore supply device, a plurality of inclined grizzly bars 7 are arranged in parallel at the outlet of the vibrating feeder 6, and the ore supplied onto the deck 8 of the vibrating feeder 6 is It moves forward by the conveying force of the vibrating feeder, rolls on the Grizz River 7, and is supplied to the jaw crusher. At this time, only fine grain ores with a diameter smaller than the lattice gaps of the Grizz River 7 pass through the gaps in the Grizz River and move downward. A vibrating feeder is known that is configured so that only large-diameter rough stones are supplied to a jaw crusher.

In the figure, M is a motor for driving the vibrator, and 9 is the vibrator.

Among the conventional raw material supply devices to the jaw crusher as described above, in the case of using the former fixed grizzly, when the supplied raw stone has a large amount of moisture, the raw stone adheres to the fixed grizzly 3 and the grizzly is damaged. There is a problem that clogging occurs and the ability to sort raw stones deteriorates.

In addition, in the latter type of feeding device using a vibrating feeder, when the moisture content of the feed is high, rough stones adhere to the deck portion 8, which deteriorates the conveying function of the vibrating feeder and requires frequent cleaning. There is.

The purpose of this invention is to solve the problems and inconveniences inherent in the conventional rough stone feeding devices as described above.By using a new rotary grizzly, even when the moisture content of the fed rough stone is high, the grizzly can be easily seen. It is an object of the present invention to provide a crushing device that does not cause clogging and does not have any disadvantages such as a vibrating feeder in which raw ore to be supplied adheres to the deck portion and reduces the capacity.

Next, embodiments embodying the present invention will be described in detail with reference to the accompanying drawings starting from FIG.

Here, FIG. 3 is a schematic side view of the entire crushing device which is an embodiment of the present invention, and FIG. 4 is a sectional view taken along the line A--A in FIG. 3.

In these figures, 10 is a jaw crusher, which is a chute 14 between a fixed jaw plate 11 shown by a broken line and a swinging jaw 13 that swings in the direction of an arrow 12.
From the raw stone input port 15 along the fixed jaw plate 1
1 and the swinging jaw 13.
The raw stone 2 supplied to the machine is crushed between both jaw plates and is then discharged from an outlet 17 to a belt conveyor 18 below.

An apron feeder 19, which is a type of stone feeding device, is provided at the front of the upper part of the jaw crusher 10, and there is a gap between the apron feeder 19 and the raw ore input port 15 of the jaw crusher. A rotary grizzly device 20 is provided that separates fine-grained ore from the ore carried by the apron feeder 19 and drops it onto the belt conveyor 18 below.

As shown in FIG. 4, this rotary grizzly device 20 has a plurality of approximately disk-shaped grizzly plates 23 arranged in parallel with a rotating shaft 21 supported horizontally by a bearing (not shown) through equally spaced gaps 22. Moreover, it is fixed coaxially to the rotating shaft 21, and as shown in FIG. 3, while the jaw crusher is in operation, it is always in the direction shown by the arrow 24, that is, the rough stone placed on this rotary grizzly machine is crushed in the direction of the jaw crusher. The fine-grained ore passes through the gaps 22 between the grizzly plates 23 and falls onto the lower belt conveyor 18, and is carried out of the machine together with the ore crushed by the jaw crusher 10. It is configured so that

Even with the above-mentioned rotary grizzly device, as shown in Fig. 4, rough stones 2a that are caught between the grizzly plates and rough stones 2b that contain a lot of moisture and adhere to the sides of the grizzly plates are easily separated from the grizzly plates. However, in order to solve this problem, two means are provided in this embodiment.

That is, one of them is the deposit removal device 2 located in front of the passage part a of the rough stone, which is a small lump that passes through the rotary grizzly device and falls.
5.

As shown in FIG. 4, this deposit removing device 25 is composed of a plurality of scraping claws 26 inserted into the gaps 22 between adjacent grizzly plates 23, 23, and the side surface 26a of each scraping claw 26 is The scraping claws are close to the side surfaces 23a of the grizzly plate 23 on both sides of the gap 22 into which they are inserted, and the supplies 2b adhering to the side surfaces of the grizzly plate 23 are scraped off by the scraping claws 26 and removed from the belt conveyor. It is configured to fall onto 18.

The second one is the side surface 23a of each grizzly plate 23.
is formed on a conical tapered surface, so that the rotation axis 2 of the gap 22
1 is configured so that the width in the axial direction of the stone 2a increases as it moves away from the rotating shaft 21. Therefore, when the rough stone 2a caught between adjacent grizzly plates is moved downward by the rotation of the grizzly plates, the rough stone 2a is gap 22
Since the width of the raw stone 2a is increasing downward, the weight of the raw stone 2a releases the catch and falls downward, and the attached supply material 2b is also affected by the supply material 2 caught in the gap.
A also falls downward without remaining stuck or stuck, thereby preventing clogging of the grizzly device.

Also, of course, even if the raw stone 2a that is firmly caught between the grizzly plates does not fall due to its own weight, it will eventually hit the scraping claw 26 and fall, and the stuck or caught state will be carried over to the rear of the deposit removal device 25. There is no chance of it being lost.

Therefore, the rough stone 2 transported by the running of the apron feeder 19 falls from the tip of the apron feeder onto the approximately disc-shaped grizzly plate 23 of the rotary grizzly device 20 provided diagonally below, and each grizzly plate The fine rough stones that have passed through the gap between the grizzly plates 23 are deposited as they are on the belt conveyor 18 below, while the large rough stones that cannot pass through the gap 22 between the grizzly plates 23 are caught on the chain 27 and moved downward, and are transferred to the chute 14. The raw ore enters the crushing chamber 16 from the raw ore input port 15 of the show crusher 10 along the line, is pinched between the fixed jaw plate 11 and the swinging jaw plate 13, is crushed, and falls onto the belt conveyor 18 as a small diameter ore. Suru.

When passing over the rotary grizzly device 20, the rough stone 2a caught between the grizzly plates moves downward as the grizzly device 20 rotates, and reaches a position where the tapered surface formed by the side surface 23a of the grizzly plate 23 opens downward. The rough stones 2b falling toward the belt conveyor below due to their own weight and adhering to the side surfaces of the grizzly plate 23 are removed by the scraping claw 26 provided in front of the small-diameter falling rough stone passage a.
peeled off from the side and fell onto the belt conveyor 18,
All the rough stones that have fallen onto the belt conveyor 18 are carried out of the machine as the conveyor 18 runs.

As described above, the present invention includes a show crusher that crushes ore by crushing it between a fixed jaw and a swinging jaw;
A rotary grizzly device includes a stone device installed at the front of the upper part of the show crusher, and a rotary grizzly device installed between the stone device and the raw ore inlet of the show crusher, in which a plurality of roughly disk-shaped grizzly plates are placed at appropriate intervals. a rotary grizzly device fixed to a rotating shaft in parallel with the rotary grizzly device; and a rotary grizzly device provided in front of a passage section for small pieces of rough ore falling after passing through the rotary grizzly device,
The present invention is characterized by comprising: a deposit removal device having a plurality of scraping claws inserted between adjacent grizzly plates; and a conveyor device for carrying out small pieces of raw ore that fall through the rotary grizzly device. Because it is a crushing device, even if the supplied raw ore contains a large amount of water and fine-grained ore tends to adhere to the side of the grizzly plate, the rotating action of the grizzly plate and the scraping claw in contact with it Due to the scraping action of the deposit removal device, the rough stones adhering to the sides of the grizzly board are constantly scraped off, and the side surfaces of the grizzly board are continuously cleaned, completely eliminating inconveniences such as clogging of the grizzly part. It will be resolved in

In addition, if the sides of the grizzly plates are tapered so that the space between the sides expands outward, rough stones caught between the grizzly plates will easily fall downward. In this respect as well, clogging of the grizzly device is prevented.

[Brief explanation of the drawing]

Figures 1a and b are top and side views of a conventional stationary grizzly device, Figure 2 is a perspective view of a vibratory feeder having a grizzly device at the outlet, and Figure 3 is a crusher according to an embodiment of the present invention. A schematic side view showing the device, FIG. 4 is A in FIG.
-A cross-sectional view. Explanation of symbols, 2...Rough stone, 2a...Rough stone caught between the grizzly boards, 2b...Rough stone attached to the side of the grizzly board, 10... Show crusher, 11...Fixed jaw, 13...
... Swing jaw 15 ... Rough stone input port, 16 ... Crushing chamber, 18 ... Belt conveyor, (conveyor device), 19 ... ◆ Apron Feeder (stone device), 20...Rotary grizzly device, 22...Gap, 23...Grizzly plate, 23a...Side surface of the grizzly plate, 25・
- Rotary deposit removal device, 26... scraping claw, a...
... Passage area for small lumps of raw stone.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A jaw crusher that crushes ore by clamping it between a fixed jaw and a swinging jaw, a stone supply device provided in front of the upper part of the jaw crusher, and the stone supply device and the jaws. A rotary grizzly device installed between the raw ore input port of the crusher, the rotary grizzly device having a plurality of approximately disk-shaped grizzly plates fixed to a rotating shaft in parallel at appropriate intervals; a deposit removal device that is provided closer to the passage of small pieces of rough ore falling after passing through the rotary grizzly device, and has a plurality of scraping claws that are inserted between adjacent grizzly plates;
A crushing device comprising: a conveyor device for carrying out small pieces of raw ore falling through the rotary grizzly device. 2. The crushing device according to claim 1, wherein the side surface of the grizzly plate forms a conical tapered surface.