JPH07121353B2 - Impact type mixer for excavated soil - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved impact mixer for excavated soil, which is used for reclaiming excavated soil.

[0002]

2. Description of the Related Art Excavated soil generated from gas pipe construction, vertical road construction, electrical construction, etc. is subjected to scouring due to excavation, and thus loses the necessary subgrade support and cannot be used as a backfill material and is discarded. Was there. For this reason, it was necessary to newly use good quality sand for backfilling. Therefore, in order to improve and regenerate the excavated soil, the excavated soil and the recovery aid and soil stabilizer are crushed and pre-mixed together, then crushed by impact, then sieved, and the bottom sieve is regenerated soil. The present invention has been proposed by the inventors. As a crushing mixer for crushing by the above-mentioned impact, for example, an impact-type mixer particularly suitable for crushing viscous substances disclosed in JP-B-42-11861 and JP-A-60-48151. It is preferable to use a machine.

In a conventional impact type mixer, a striking element is attached to a rotating body that rotates around a horizontal axis to form a rotating striking element, and a collision plate for colliding the above-mentioned substances against the striking element is provided, and a bending movement is performed by a prime mover. , Having a bending type crushing plate in which a plurality of crushing pieces are connected by a bendable member, and the surface of the collision plate and the bending type crushing plate and between the bending type crushing plate and the rotary impactor. The material is crushed and mixed in space in a short time. Due to the impacting action of the rotary impactor and the automatic deposit removal action of the bending type crushing plate, even highly viscous materials are crushed without sticking due to adhesion, and hard materials are partially crushed. The mixing of these materials is carried out promptly (for example, JP-A-57-121086,
JP-A-64-15151).

[0004]

However, in the conventional impact type mixer for excavated soil or the like, when the material such as excavated soil or the like is crushed and mixed, adhesion of the material to the surface of the collision plate is caused to gradually grow. By doing so, it becomes a lump and peels off, falls on the rotary impactor, and is impacted. In addition, when it collides with the collision plate, it causes an irregular and intermittent impact action, and further, the adhesion of material grows on the surface of the bending type crushing plate, and the automatic bending type crushing plate automatically moves. The effect of removing the adhered substances is attenuated, and the suppression of the adherent growth of the material is further reduced. In the crushing and mixing of the materials in such a state, sufficient crushing of the hard material and sufficient mixing with the recovery aid and soil stabilizer cannot be obtained, resulting in a partially unmixed state. It will be discharged outside the impact mixer. In addition, the material that has grown into lumps on the surface of the collision plate may be dropped and discharged to the outside of the machine without passing through the rotary impactor. Crushability and mixability will be significantly reduced. Furthermore, when crushing and mixing the material such as excavated soil, the material is also attached to the rear plate surface by the impact action of the rotary impactor, and there is the above-mentioned growth into the lump shape, the accompanying drop, etc., It may be discharged outside the aircraft.

As described above, not only the crushing and mixing properties of the material are significantly deteriorated, but also the massive material cannot be intermittently discharged and the excavated soil cannot be properly regenerated, which is not preferable.

The present invention solves such a conventional problem, and effectively suppresses the adhesion growth of the material such as excavated soil on the surfaces of the collision plate, the bending type crushing plate and the rear plate,
An object of the present invention is to provide an excellent impact type mixer for excavated soil or the like, which can surely perform crushing and mixing by impact and can perform excellent excavated soil regeneration processing.

[0007]

In order to achieve the above object, the present invention provides an impact type mixer having a rotary impacting element and a bending type crushing plate, wherein the rotary impacting element is symmetrical and the front side is flexible. A collision plate that can be, and a bending type crushing plate that is continuous in the height direction such that a plurality of crushing pieces that are connected to the collision plate can be bent are provided, and a rear plate that is flexible on the rear surface side, It is characterized by having.

[0008]

The present invention has the following actions due to the above-mentioned configuration. That is, since the surfaces of the collision plate, the bending type crushing plate, and the rear plate are alternately bent and bent, it is possible to sufficiently suppress the adhesion growth and agglomeration of the material. It is possible to efficiently and surely crush and mix the materials described in 1 above, and to perform good excavated soil regeneration processing.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a diagram showing the overall configuration of an impact type mixer showing an embodiment of the present invention.

In FIG. 1, 10 is an impact mixer, 12 is a rotating body that rotates around a horizontal axis at high speed in the direction of the arrow, and a plurality of hitting elements 14 are attached to the outer periphery of the rotating body 12. It constitutes the rotary striker 12. The top casing 17 of the impact mixer 10 is provided with a supply port 18 for supplying a material such as excavated soil. Rotating striker 1
2 facing the counterclockwise rotation direction of 2, the front side 2
In FIG. 0, a collision plate 24 inclined toward the upper part, a bending type crushing plate 30 at the central part, and an airtight material 42 are arranged so as to be connected to the lower part. Further, a rear plate 60 is provided on the right side, that is, the rear surface side 22, so as to face the clockwise striker 12 symmetrically with respect to the rotary impactor 12.

The collision plate 24 is made of an elastic material such as hard rubber or stainless steel plate, and the upper portion thereof is the supply port 18.
A side plate 28 is fixed to the side plate 28, and a seat plate 26 is provided on the lower back surface. When an external force acts on the surface of the seat plate 26, the lower part of the collision plate 24 is bent toward the rotary impactor 12 side, and when the effect of the external force is removed, the collision plate 24 is flexible so that it can return to its original state. .

A plurality of bending pieces 32 of the bending type crushing plate 30 are continuously fastened in the height direction via connecting members 36.
One end of the upper end bending piece 32a of the bending type crushing plate 30 is connected via a connecting tool 54 below the blow-off member 53, and the other end is connected via a connecting tool 36 of the bending piece 32. Further, the end portion of the lower end bent piece 32b is connected to the bent piece 32 via a connector 36.

The airtight member 42 is made of an elastic material such as hard rubber or stainless steel plate. The upper end of the airtight member 42 is connected to the end of the lower bent piece 32b through a member, and the lower end is movably suspended inside the casing 19. There is.

A support base 46 is provided on the top of the top casing 17.
The driving device 48 is provided on the upper part of the driving device 48. The rotating motion of the driving device 48 is transmitted to the scraping member 53 via the link by the swinging motion which is an alternating motion around the support shaft 52, and the scraping member 53.
The seat plate 26 and the connector 5 facing the lower end 56 of the
4, the collision plate 24 is bent, and at the same time, the bending type crushing plate 30 can be bent.

A bending piece 32 at the bottom of the bending type crushing plate 30.
The lower bending piece 32b is connected to the casing 19 together with a bending connecting member 38 such as a link chain and a pair of elastic members 40, 40. Elastics 40,4
0 is composed of a pair of members, and is configured to be sufficiently repelled when the members elastically collide with each other. A swinging motion is given to the scraping member 53, and a bending motion is generated in the bending type crushing plate 30.
Since the repulsion of the members 0 and 40 when they elastically collide with each other and the bending movement are restrained by the bending connecting member 38, the upper bending piece 32a to the lower bending piece 32a.
Another bending motion is generated in the bending type crushing plate 30 between b and b. That is, a secondary bending motion is generated in the height direction of the bending type crushing plate 30.

As described above, the collision plate 24 is bent only by the above-mentioned one set of motion mechanisms without using separate motion mechanisms, and at the same time, the bending type crushing plate 30 can be bent, thereby simplifying the structure. Can be achieved.

The rear plate 60 is made of an elastic material, such as hard rubber, and is mounted on the mount 62 provided inside the top casing 17 and the mount 64 provided inside the casing 19 in the height direction of the rear side 22. It is arranged. And
An expulsion device 66, for example, an air knocker is attached to the back of the rear plate 60, and is freely suspended by a member 70 provided inside the top casing 17 using a link chain 68 or the like. When the material such as excavated soil is shock-mixed, a fine material having viscosity is attached to the surface of the rear plate 60 by the high-speed rotation of the rotary impactor 12, but the impact force due to the operation of the expelling means 66 is applied to the rear portion. It acts on the plate 60 to bend it to brush off the deposited material and keep the surface clean. An inspection door 23 is provided in the casing 19 so as to be openable and closable at required locations for internal inspection and maintenance of the impact mixer 10.

Next, the operation of the above embodiment will be described.
In the above embodiment, when a material such as excavated soil is supplied through the supply port 18, the rotary impactor 12 is accelerated and
The above material is collided with the collision plate 24 and the bending type crushing plate 30, and the material repelled by the collision is again caused by the rotary impactor 12.
The hard material is crushed by the action of the impact force, and the hard material is partially crushed while repeatedly colliding with, and at the same time, mixing with these materials is promptly performed, discharged from the discharge port 23, and excavated. Regeneration by impact mixing of soil etc. is performed.

In the above, the bending type crushing plate 3 is bent at the same time as the bending of the collision plate 24 by the alternating swinging motion of the discharging member 53.
Bending of 0 is continuously performed, and an accelerating force associated with the movement acts against the adhesive force of excavated soil under these bending and bending motions, and the collision plate 24 and the bending type crushing plate 30 Adhesive growth of the material on the surface is suppressed, the impact force described above sufficiently acts, and the material is crushed and mixed with the material promptly. Further, the airtight member 42 is made movable by transmitting the bending movement of the bending type crushing plate 30,
The adhering material can be removed to protect the adhering growth of the material on the inner surface of the lower portion of the casing 19, and further, the invasion of the material into the back portion of the bending type crushing plate 30 can be avoided by the above movement. Then, the fine material deposited on the surface of the rear plate 60 is also impacted by the removing means 66 to remove the attached material and keep it in a clean state.

In this way, the surfaces of the collision plate 24, the bending type crushing plate 30, and the rear plate 60 provided on the front side 20 and the rear side 22 with which the rotary striker 12 of the impact mixer 10 is symmetrical are provided. Since it is possible to sufficiently suppress the adhesion growth and agglomeration of the material in (3), it is possible to efficiently and surely crush and mix the material such as the excavated soil, and to perform a good regeneration treatment of the excavated soil.

[0021]

As is apparent from the above embodiment, the present invention has alternating surfaces of the collision plate, the bending type crushing plate, and the rear plate disposed on the front and rear sides of the rotary impactor. Bending and bending movements are applied to the surface, and the adhesion growth and agglomeration of the material on each of these surfaces can be sufficiently suppressed, so that the material such as excavated soil can be efficiently and reliably crushed and mixed, The excavated soil can be recycled.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an impact mixer showing an embodiment of the present invention.

[Explanation of symbols]

 10 Impact Mixer 12 Rotational Impactor 19 Casing 20 Front Side 22 Rear Side 24 Collision Plate 30 Bending Crush Plate 32 Crushing Piece 40 Elastic Tool 42 Airtight Material 53 Discharging Member 60 Rear Plate 66 Discharging Means

Claims (5)

[Claims] 1. An impact mixer having a rotary hitting element and a bending type crushing plate, wherein the rotary hitting element is symmetrical and the front side of the impact plate is flexible, and a plurality of solutions connected to the impact plate. Impact type mixing of excavated soil, characterized in that it is provided with a bending type crushing plate in which debris can be bent continuously in the height direction and a flexible rear plate is provided on the rear surface side. Machine. 2. The back of the collision plate is provided with an expulsion member for performing an alternating motion, the lower end of the expulsion member faces the lower part of the collision plate, and the lower part of the expulsion member is the upper end of the flexible crushing plate. The impact type mixer for excavated soil or the like according to claim 1, wherein the impact type mixer is connected to the above, and the bending type crushing plate can be bent at the same time as the impact plate is bent. 3. The impact of excavated soil or the like according to claim 1 or 2, wherein the lower portion of the bending type crushing plate is connected to the casing of the impact type mixer via a bending connecting member and an elastic tool. Type mixer. 4. The impact mixer for excavated soil according to claim 1, wherein an airtight material is provided at a lower end of the bending type crushing plate. 5. The impact type mixer for excavated soil or the like according to claim 1, 2, 3 or 4, wherein the rear part of the rear plate is provided with a discharging means.