JPH049586B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an impact mixer for excavated soil, etc., which is used for recycling excavated soil.

[Conventional technology] Excavated soil generated from gas pipeline construction, upper and lower road construction, electrical construction, etc. is kneaded by excavation, loses the necessary subgrade support capacity, becomes unusable as backfill material, and is discarded. was. For this reason, it was necessary to use newly improved soil for backfilling. Therefore, in order to improve and recycle the excavated soil, the excavated soil, recovery aid, and soil stabilizer are mixed together for crushing and premixing, then crushed by impact, and then sieved, and the bottom of the sieve is filled with recycled soil. The inventors have proposed something that does this (for example, Japanese Patent Laid-Open No. 121086/1986).

As a crushing mixer that crushes by the above-mentioned impact, for example, Japanese Patent Publication No. 42-11861, Japanese Unexamined Patent Publication No. 60
It is preferable to use an impact mixer, which is particularly suitable for crushing viscous substances, as shown in Japanese Patent No. 48151. Conventional impact type mixers have a rotary impactor attached to a rotating body that rotates around a horizontal axis to form a rotary impactor, and a bendable mixer with multiple crushed pieces connected in series, which is made into a rotating impactor by a prime mover. It has a bending type crushing plate made of members, and materials are crushed and mixed in a short time on the surface of the bending type crushing plate and in the space between the bending type crushing plate and the rotating striker. Due to the impact action of the rotating impactor and the automatic shaking-off action of the bending type crushing plate, even highly viscous materials are crushed without sticking due to adhesion, and hard materials are partially crushed. At the same time, mixing of these materials takes place quickly.

The above-mentioned automatic shaking-off action of the bending type crushing plate is particularly effective when the elastic tools collide with each other in the longitudinal direction of the bending type crushing plate and when the bending type crushing plate freely bends. The impact force when the body is restrained is transmitted and the process is carried out effectively.

[Problems to be Solved by the Invention] However, in the conventional impact mixer for excavated soil, etc., when crushing and mixing materials such as excavated soil, materials may not adhere to the surface of the bending type crushing plate. As it gradually grows, the transmission of impact force when the elastic devices of the bending type crushing plate collide with each other and when the bending motion is restrained is reduced in the length direction of the bending type crushing plate, and automatic deposits are removed. This will attenuate the shaking-off action and cause the material to adhere and grow, resulting in it growing into lumps and falling from the surface of the bending type crushing plate, significantly reducing the crushing and mixing properties of excavated soil and other materials. There was a problem in that not only the excavated soil was degraded, but also lumpy material was discharged intermittently, making it impossible to perform good reclamation of excavated soil.

The present invention solves these conventional problems, and provides an excellent excavated soil that can reliably crush and mix materials such as excavated soil by impact, and perform good reprocessing of excavated soil. The purpose of this invention is to provide an impact mixer such as the following.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides an impact mixer having a rotating impactor and a bendable crushing plate, which is composed of a bendable member in which a plurality of crushed pieces are connected. A casing includes a bending type crushing plate, at least two sets of elastic devices provided in the length direction of the bending type crushing plate, and a support device for connecting each bendable member in the vicinity of the elastic device. Furthermore, the crushed pieces have protrusions on their surfaces.

[Function] The present invention has the following effects due to the above configuration.

That is, it is possible to avoid the adhesion growth and clumping of materials on the surface of the bending type crushing plate, so that materials such as excavated soil can be reliably crushed and mixed, and the excavated soil can be regenerated in a good manner.

[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, reference numeral 10 indicates an impact type mixer, and reference numeral 11 indicates a rotating body that rotates around a horizontal axis. 14 indicates a casing, and a supply port 16 is provided at the top of the casing 14.
It is used to supply materials such as excavated soil. An inclined collision plate 20 is provided on the upper left side of the rotary striker 13, and a bendable collision plate 20 is provided on the left side, facing the counterclockwise rotation direction of the rotary striker 13, along the height direction of the casing 14. A crushing plate 30 is provided, and the upper end of the bendable crushing plate 30 is joined to a member 42 of a prime mover 40 provided on the ceiling of the casing 14. The bending type crushing plate 30 consists of a plurality of pieces 32 each fastened to a bendable member 34 such as a link chain, and furthermore, the pieces 32 are arranged at a required interval in the length direction of the bending type crushing plate 30. , two sets of elastic members 36, 36a are fastened to the bendable member 34, respectively. The surface of the crushed pieces 32 has protrusions 33, for example,
Horizontal flat plate-shaped protrusions 33 are provided at the upper and lower ends of the crushed piece 32, respectively, and the crushed piece 32 has a U-shaped cross-section. One end of each bendable member 34a, 34b near the elastic members 36, 36a is coupled to a support member 38, 38a fixed to the casing 14, respectively.

The elastic members 36, 36a each consist of a pair of members, and are configured so that they can sufficiently repel when the members elastically collide with each other.

When the prime mover 40 rotates, a rocking motion is given to the member 42, causing the bending type crushing plate 32 to generate a bending motion. At this time, the elastic members 36 and 36a receive repulsion when the respective members collide with each other, and the bendable member 34 is provided with the supports 38 and 38a.
Since the movements of the members a and 34b are restricted, different bending movements are generated in the bendable crushing plate 32 between the member 42 and the elastic tool 36 and between the elastic tool 36 and the elastic tool 36a. ing. That is,
A secondary bending motion is generated in the length direction of the bendable crushing plate 32, and the impact force is uniformly transmitted in the length direction.

Next, the operation of the above embodiment will be explained. In the above embodiment, the material such as excavated soil is supplied to the supply port 16.
When the material is supplied from the rotary impactor 13, the material collides with the collision plate 20 and the bending type crushing plate 30 with the acceleration action of the rotating impactor 13, and the material repelled by the collision repeatedly collides with the rotational impactor 13 again. However, the hard materials are crushed by the action of the impact force, and the hard materials are partially crushed, and at the same time, they are quickly mixed with these materials and discharged from the discharge port 18, and the hard materials are crushed by the impact mixing with excavated soil, etc. Playback processing is performed. In the above, under the secondary bending motion of the bending type crushing plate 30, the strong impact force that is uniformly transmitted in the length direction provides a reliable automatic shaking-off action on the adhesion of highly viscous material. .

As described above, according to the above embodiment, the bending type crushing plate 30 is provided with a reliable automatic shaking-off action, and it is possible to avoid adhesion and growth of materials on the surface and clumping, so that materials such as excavated soil can be It is possible to reliably crush and mix the excavated soil, and to recycle the excavated soil in a good manner. The multiple crushing plates have protrusions on their surfaces, so when materials collide, they break up the highly viscous lumpy material and create a new interface inside the lumpy material, allowing it to be split and finely divided. By improving fragmentation and increasing the mutual mixing performance of materials, it is possible to further promote adhesion and growth of materials on the surface of the crushing plate and avoidance of clumping.

FIG. 2 shows the configuration of another embodiment of the present invention. In FIG. 2, the same reference numerals as in FIG. 1 have the same structure, and the detailed description will be repeated except for the differences.

The fixed striker 13' is rotated clockwise or counterclockwise around the horizontal axis. The supply port 16' is provided at the center of the top of the casing 14'. Inclined collision plates 20', 20' are symmetrically provided on the upper left and right sides of the rotary striker 13', and a bendable crushing plate 3 is provided along the height direction of the casing 14'.
0' and 30' are provided with respective opposing surfaces to the rotating striker 13'. In the above embodiment, when the material such as excavated soil is supplied from the supply port 16', the collision plates 20', 20' and the bendable crushing plates 30', 30' passed in the rotational direction of the rotary striker 13'. This is used to crush and mix materials such as excavated soil.

In this way, according to the above embodiment, the striking element 1
2', both forward and reverse striking surfaces and bendable crushing plate 3
Since both sides 0' and 30' are selected and used for crushing and mixing materials, it is possible to significantly extend the time until the above-mentioned members are replaced due to wear. In addition, the space above the rotary impactor can be expanded without particularly increasing the main dimensions of the impact mixer, and these spaces can be freely used for movement for crushing and mixing materials. As a result, the crushing and mixing of materials can be further improved.

3 and 4 show other embodiments of the crushed pieces 32. In FIG. 3, the surface of the crushed piece 32 has protrusions 33 having a cross-shaped flat plate structure at the upper end, center, and lower end, which can further improve the crushing and mixing of materials.

In FIG. 4, the surface of the crushed pieces 32 has a plurality of pin-shaped protrusions 33, which can improve the division and fragmentation of the material and the mixing characteristics of the materials.

It goes without saying that the embodiments of the present invention are not limited to the above-mentioned embodiments, and many embodiments can be adopted, such as means for generating multi-order bending motion of the bendable crushing plate and means for controlling the same.

[Effects of the Invention] As is clear from the above embodiments, the present invention has a bending type crushing plate that can be reliably shaken automatically by a strong impact force uniform in the length direction under secondary bending motion. By providing a dropping action, it is possible to avoid adhesion and clumping of materials on the surface of the bending type crushing plate, so materials such as excavated soil can be reliably crushed and mixed.
Excavated soil can be regenerated in a good manner.

[Brief explanation of drawings]

1 and 2 are vertical sectional views of an impact type mixer according to an embodiment of the present invention, and FIGS. 3 and 4 are perspective views of crushed pieces of the same machine. 10,10'...Impact mixer, 13,13'...
...Rotating striker, 14, 14'...Casing, 3
0,30'...Bending crushing plate, 32,32'...Crushing pieces, 33,33'...Protrusion material, 34,34'...
Bendable member, 34a, 34a'...Bendable member, 34b, 34b'...Bendable member, 38, 3
8'... Support tool, 38a, 38a'... Support tool.

Claims (1)

[Scope of Claims] 1. An impact type mixer having a rotating striker and a bending type crushing plate, which includes a bending type crushing plate made of a bendable member connecting a plurality of crushed pieces, and a bending type crushing plate made of a bendable member connecting a plurality of crushed pieces. at least two sets of elastic devices provided in the length direction;
An impact type mixer for excavated soil, etc., characterized in that a casing is provided with a support device for connecting each bendable member in the vicinity of the elastic device. 2. The impact mixer for excavated soil or the like as set forth in claim 1, wherein the crushed pieces have protrusions on the surface.