JP2600958Y2 - 2-axis clay shearing device - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application] The present invention relates to the use of compressed air to feed mixed sediment dredged by a backhoe or grab bucket to a landfill site using compressed air. The present invention relates to a two-shaft clay shearing device that is used for efficiently shredding wood and the like mixed into hard clay and dredged earth and sand and smoothly feeding the earth and sand to a mixed-pressure transmitter.

[0002]

2. Description of the Related Art When clay is mixed in dredged soil or when dredged soil in which most of the dredged soil is clay is fed by compressed air using compressed air, a conventional pretreatment step of feeding the mixed air to a mixed pressure transmitter is a conventional process. The dredged soil is cut into pieces with a water jet or a scoop by a manual operation on a hopper, cut with a high-pressure water jet cutter, and further cut with a small machine such as a small backhoe.

On the other hand, there are various kinds of clay such as hard and soft in dredged clay, and hard and high-clay clay are particularly difficult to handle. Even if the clay is once cut with high-pressure water, If no tearing force is applied, it will return to its original state. Therefore, even if the dredged clay is sheared by high-pressure water or manually, it must be removed from the lump and sent to the next process promptly, which requires a great deal of labor and time, and is extremely inefficient.

[0004] On the other hand, using a large amount of water from the water jet cutter increases the water content of the pumped soil and increases the wastewater treatment cost of the landfill. In addition, in the field of general industry, industrial waste and household waste are shredded.
Shaft-type crushers are known and widely used.
It is generally known that the two-shaft crusher is provided with a tough tool steel blade having a thickness of 100 mm to 150 mm alternately and densely arranged on each axis. However, in this case, when handling clay, there is a problem that it becomes a dumpling mass and cannot be processed.

[0005]

The present invention has been made to solve the above-mentioned conventional problems, and effectively tears hard clay or mixed wood in dredged soil and the like, It is an object of the present invention to provide a two-shaft clay shearing device that can be cut into small pieces and fed to a downward pressure mixer or the like.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, a two-shaft clay shearing device of the present invention is provided with two shearing devices which are mutually different in rotational speed and are driven to rotate inward each other. On each of the axes of the shaft, a plurality of clay shearing blades having a plurality of blades on the circumference are arranged so that each blade has a phase difference in the axial direction, and each of the clay shearing blades is Blade
The infeed plate orthogonally plate-like clay in the rotational direction in the rotation direction rear provided comprising clay from two-shaft clay shearing device was then <br/> to carry in the direction of rotation of the clay shearing blades.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a two-shaft clay shearing device according to the present invention; FIG. FIG. 2 is a plan view of an embodiment in which the device is incorporated, and FIG. 2 is a longitudinal sectional view taken along the line AA in FIG. That is, the earth and sand is carried into the earth and sand receiving hopper 2 by the backhoe 1, and the clay mass 3 is shredded by two sets of biaxial clay shearing devices 4 incorporated in the upper part of the earth and sand receiving hopper 2. The two-shaft clay shearing device 4 is driven to rotate by a drive motor 5.

The obstacles separated by the sediment receiving hopper 2 and the obstacles separated by the vibrating screen 6 are put into an obstacle box 9 via a belt conveyor 8. Further, the earth and sand shredded by the biaxial clay shearing device 4 are kneaded by a kneading machine 11 in a lower tank 10, and thereafter, from a compressed air supply pipe 13 via a check valve 12 by a pressurizing impeller 7. The mixed pressure is sent by the pressure feed pipe 14 together with the air.

Next, the details of the two-shaft clay shearing device 4 will be described. Referring to FIG. 3, each device is provided with a difference in the number of rotations, and is rotated inward by a driving motor 5 in a mutually rotating manner. Two driven shear axes 20 are provided.
As shown in FIG. 4 in a longitudinal sectional view taken along the line BB in FIG. 3, a plurality of, for example, this embodiment, is provided on each of two sets of shearing shafts 20 arranged in the upper part in the sediment receiving hopper 2. In this embodiment, a plurality of clay shearing blades 21 having five blades, for example, thirteen in this embodiment are arranged so that each blade has a phase difference in the axial direction.

That is, the five blades of the clay shearing blade 21 are:
As shown in FIG. 7, each adjacent blade has a phase difference. However, in this embodiment, since there are five blades, 360 ° ÷ 5 =
72 °, and since there are 13 clay shearing blades 21, 72 °
{13} 5.5 ° or less, and the phase difference is set to about 5 °, which is 5.5 ° or less. The reason for providing the phase difference in this manner is to prevent a sudden load from being applied to the drive motor 5.

Next, as shown in the enlarged side view of FIG. 5 and the cross-sectional view of the shearing shaft of FIG. 6, the clay shearing blade 21 has five blades provided on the circumference made of a relatively thin steel plate. A shearing blade with a 5 ° rake angle and a clearance angle at the front and back of the blade, and the tip of the blade is cut into a knife edge to facilitate biting into the clay. Shear blade
A plate-like viscous material is provided at right angles to the rotation direction on the back in the rotation direction of each blade 21.
A clay feed plate 22 is provided and the clay is turned by the clay shearing blade 21.
Transport in the reverse direction, and as a result, send clay down
It has the function of

The two sets of shearing shafts 20 are driven inward by the drive motor 5 so that the rotational speeds are different from each other, and each rotational speed has a difference of about 10 to 15%. It has been confirmed by experiments that this is preferable. Each shearing shaft 20 is provided with a reverse rotation driving function by means of an overload current or the like, and when an excessive load is applied, the reverse rotation rotates to generate a tearing force of the clay.

Further, the provision of the fixed blade 24 as shown in FIG. 4 has an effect of peeling off the clay adhered to the blade. On the other hand, by arranging the clay shearing blades 21 at appropriate intervals, clogging of the clay is prevented, and an obstacle contained in the dredged soil is easily passed. Further, as shown in FIG. 6, a water supply hose 25 is connected to an end of the hollow shear shaft 20 and the shear shaft 20 is connected to the water supply hose 25.
Around each of the clay shearing blades 21, a number of water jet holes 2
6 is provided to supply water W to each of the clay shearing blades 21 to wet the blades with a small amount of water W and prevent the clay from adhering to the blades.

[0014]

According to the biaxial clay shearing device of the present invention described above, when the dredged soil is sent to the landfill site under mixed pressure, the hard clay in the dredged soil and the mixed wood Can be effectively torn and shredded, and can be smoothly introduced into a mixed-pressure transmitter. Further, unlike the conventional chopping of clay by a high-pressure water jet cutter, a large amount of water is not required, so that it is economical.

[Brief description of the drawings]

FIG. 1 is a plan view of a hopper for feeding soil and sand incorporating the biaxial clay shearing device of the present invention.

FIG. 2 is a longitudinal sectional view taken along the line AA of FIG.

FIG. 3 is a plan view of the two sets of biaxial clay shearing devices of FIG. 1;

FIG. 4 is a vertical sectional view taken along the line BB in FIG. 3;

FIG. 5 is an enlarged side view of the clay shearing blade of FIG.

FIG. 6 is a cross-sectional view of the shear axis of FIG.

FIG. 7 is an explanatory diagram of a phase difference between five blades of the clay shearing blade of FIG. 5;

[Explanation of symbols]

 Reference Signs List 20 shear axis 21 clay shearing blade 22 clay feeding plate 26 water ejection hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of clay shearing blades having a plurality of blades on the circumference of each of two shearing shafts which are mutually different in rotational speed and are driven to rotate inward each other. , as well as arranged by providing a phase difference to each of the blades in the axial direction, the rotational direction in the rotation direction back surface of each blade of each clay shear blade
Clay clay perpendicularly provided infeed plate of the plate-like clay countercurrent
A two-shaft clay shearing device that is carried in the direction of rotation of the shearing blade .