JP2002052346A - Crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crusher which has a means capable of efficiently removing a fine powder produced by crushing without requiring a posttreatment of the powder. SOLUTION: A dust collector 20 is placed on the truck body 2 of a crusher. The suction port 23a of a suction duct 23 connected to the dust collector 20 is arranged at least in the vicinity of a crushing apparatus 30. By sucking a fine powder with the suction duct 23 and by collecting dust with the dust collector 20, crushed scrap produced by crushing does not contain water or contains only a small amount of water. Therefore, the removal work of water- containing parts is not required and trouble for preparing water is not always necessary, enabling the fine powder to be removed efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher,
In particular, the present invention relates to a configuration for preventing the generation of floating fine powder due to crushing.

[0002]

2. Description of the Related Art When crushing concrete or the like by a crusher and reusing it as a backfill material, fine powder floats in the air due to crushing, and particularly when working in a place adjacent to a residential area, there is an environmental problem. appear. Conventionally, in order to suppress the generation of such fine powder, water is sprinkled on the material to be crushed introduced into the crushing unit.

[0003]

If the generation of fine powder is prevented by watering as in the prior art, when the material to be crushed is concrete, the water is sprinkled to form a muddy portion of the crushed chips, which makes subsequent screening difficult. Become. For this reason, it is necessary to perform an operation for removing the portion of the crushed waste containing water, and there is a problem that the treatment is troublesome.

The present invention has been made in view of the above-described problems, and provides a crushing machine having means for removing fine powder with high work efficiency without troublesome post-treatment of crushed swarf due to sprinkling. Aim.

[0005]

The crusher according to the present invention has a dust collector mounted on the body of the crusher, and at least a suction port of a suction duct connected to the dust collector is provided with a crusher. It is characterized by being arranged in the vicinity.

[0006] As described above, if the dust collector is mounted on the crusher and the fine powder generated by the crusher is sucked to collect the dust,
The product generated by the crushing does not contain water, and fine powder can be removed with high work efficiency.

[0007] The crusher according to the second aspect is the crusher according to the first aspect,
The suction port is also provided in a sieve section for separating crushed debris after crushing.

[0008] By providing the suction port for sucking the fine powder into the dust collector also in the sieve portion, the generation of the fine powder can be further suppressed.

According to a third aspect of the present invention, in the crusher according to the first or second aspect, the dust collector has a discharge port of the fine powder collected at a lower portion of the dust collection section, and the discharge port is configured to operate the dust collector. It is characterized by having a structure that automatically closes and opens with a stop.

As described above, if the opening and closing of the discharge port is automatically performed in accordance with the operation and stoppage of the dust collector, the operation of opening and closing the discharge port by the operator becomes unnecessary, and labor can be saved.

[0011]

FIG. 1 is a side view showing an embodiment of a crusher according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a side view showing an arrangement of a dust collector. The crusher is a self-propelled type having a crawler type traveling body 1, and a jaw crusher type crushing device 3 including movable teeth 3 a and fixed teeth 3 b is mounted on a vehicle body 2 installed on the traveling body 1. Is done. In the vicinity of the crushing device 3, a hopper 5 and a feeder 6 for supplying the crushed material to be input to the hopper 5 by a hydraulic shovel or the like to the crushing device 3 are provided.

A conveyor 7 for discharging the crushed material to the front of the vehicle body 2 is provided below the crushing device 3. Above the conveyor 7, a magnetic separator 8 that adsorbs and scrapes iron chips from the crushed chips is attached.

On the side of the vehicle body 2, there is provided a conveyor 11 for guiding crushed debris transferred from the tip of the conveyor 7 via a chute 10 upward and rearward of the vehicle body. At the rear end of the conveyor 11, a chute 12 for dropping crushed chips is provided. Below the chute 12, there is provided a sieve portion 13 composed of two stages of vibrating sieves 13a and 13b inclined forward and downward. The rear end of the conveyor 15 is located below the front part of the upper sieve 13a, and large crushed debris that cannot pass through the sieve 13a moves on the sieve 13a and falls on the conveyor 15, and is conveyed by the conveyor 15. It is sent back to the crushing device 3 again and crushed again.

Crushed debris that cannot pass through the lower sieve 13b is
It falls on the conveyor 16 installed sideways from the front,
The conveyor 16 conveys the vehicle to the side of the vehicle. The crushed debris that has passed through the lower sieve 13b is conveyed backward through the conveyor 17.

At the base end of the two-stage sieves 13a, 13b and the conveyor 17, a cover 18 for preventing the fine powder from diffusing into the atmosphere when crushing is performed is attached.

Reference numeral 20 denotes a dust collector provided on the vehicle body 2 according to the present invention. The dust collector 20 has a cylindrical portion 21 as shown in FIG.
And a cyclone type having a suction pump 22 at the top thereof. That is, the air containing fine powder is sucked into the cylindrical portion 21 by the pump 22, the air is sucked upward and discharged from the top portion, and the fine powder is dropped after rotating and flowing along the inner periphery of the cylindrical portion 21 by the inertia force accompanying the flow. To separate fine powder.

A suction duct 23 is connected to the dust collector 20, and a suction port 23 a at the tip of the duct 23 is arranged near the crushing device 3. In the present embodiment, another suction duct 24 is connected to the dust collector 20, and a suction port 24 a of the suction duct 24 is disposed in the cover 18 that covers the sieve portion 13.

A dust discharge port 25 made of rubber is provided below the cylindrical portion 21 of the dust collector 20. When the internal pressure of the cylindrical portion 22 decreases due to the operation of the motor 22,
The discharge port 25 is closed by the external pressure, and when the internal pressure is increased by the stop of the motor 22, the fine powder accumulated in the opened interior falls.

In this configuration, when a concrete block or the like is crushed in the crushing device 3, fine powder is generated, and the fine powder is passed through the suction duct 23 to the dust collector 20.
Then, the fine powder is separated in the cylindrical portion 21 of the dust collector 20 and accumulates downward, and the dust-removed air is discharged from the top of the dust collector 20, so that the diffusion of the fine powder to the outside is prevented. Fine powder generated in the sieve section 13 is similarly sucked into the dust collector 20 via the suction duct 24 and is removed.

As described above, by removing the fine powder generated by the crusher, the problem of air pollution due to the fine powder can be solved, and the crushing operation near the residential area becomes possible. In addition, it is not necessary to sprinkle water on the object to be crushed.

Further, when the sieve portion 13 is provided as in the present embodiment, the sieve portion 13 is also provided with the suction duct 24.
Is provided, the fine powder generated in the sieve portion 13 can be removed, and the fine powder can be removed in a more complete form. In this case, since the sieve portion 13 is covered with the cover 18 shown with diagonal lines, scattering of fine powder can be prevented, and dust can be efficiently removed.

The fine powder discharge port 2 in the dust collector 20
5 is automatically opened and closed according to the operation and stoppage of the dust collector 20, so that the operator does not need to open and close the discharge port 25 for discharging the fine powder accumulated in the dust collector 20.

The present invention can be applied to a case where the crushing device 3 is of a roller type. Further, the crusher of the present embodiment
A stage conveyor 11 is mounted on the vehicle body, and a sieve 13
, The structure is designed to be compact, but the present invention can also be applied to a configuration in which the second-stage conveyor 11 is installed at the front or side of the vehicle body. In consideration of the possibility of work near a residential area, the crusher is preferably an electric crusher using a commercial power supply, but the present invention can also be applied to a hydraulic crusher.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a crusher according to the present invention.

FIG. 2 is a plan view of the crusher of FIG.

FIG. 3 is a side view showing an arrangement of the dust collector of the present invention.

[Explanation of symbols]

1: running body, 2: body, 3a: movable teeth, 3b: fixed teeth,
3: crusher, 5: hopper, 6: feeder, 7, 11,
15-17: Conveyor, 8: Magnetic separator, 13a, 13b:
Sieve, 13: sieve part, 18: cover, 20: dust collector, 21:
Cylindrical part, 22: motor, 23, 24: suction duct, 23
a, 24a: inlet, 25: outlet

Claims (3)

[Claims] 1. A crusher, wherein a dust collector is mounted on a body of the crusher, and a suction port of a suction duct connected to the dust collector is arranged at least near a crushing device. 2. A crusher according to claim 1, wherein said suction port is also provided in a sieve portion for separating crushed crushed chips. 3. The dust collector according to claim 1, wherein the dust collector has a discharge port of the fine powder collected at a lower portion of a dust collecting section, and the discharge port is automatically operated when the dust collector is operated or stopped. A crusher having a structure that can be closed and opened.