JP3068965B2 - Cracking device for plate-shaped residual soil improvement material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for producing a soil remediation material by mixing a time-hardening material such as cement with a slurry of the soil left from a construction site and then pressurizing and dewatering with a filter press. The present invention also relates to an apparatus for immediately crushing a plate-like residual soil improving material discharged from the filter press.

[0002]

2. Description of the Related Art Hitherto, as means for breaking large lumps into small lumps, means for rotating a rotary blade having teeth and breaking the large lumps with the rotary blade has been usually adopted.

[0003]

The splitting method using the rotating blades is suitable for breaking up a relatively hard material such as rock, which is bulky but has not been completely hardened yet. The following problems occur when employed in the crushing of wood. That is, since the impact point is random, the size of the crushed material is not uniform, and in the worst case, a layer crack may occur in the thickness direction of the plate-shaped residual soil improving material, and strength not achieved and random Due to the impact, chipping and powdering of the end of the plate-shaped residual soil improving material occur, and the yield deteriorates.

[0004]

SUMMARY OF THE INVENTION In order to advantageously solve the above-mentioned problems, in the crushing apparatus for plate-like residual soil improving material of the present invention, a conveyor 2 extending forward from a lower portion of a filter press 1 is provided. A chute 3 extending obliquely downward from the front end of the conveyor 2 is provided at the front of the main conveyor 5. A crushing main roll 5 rotated by a driving device 4 and extending in the left-right direction is provided obliquely below the chute 3. And the auxiliary crushing rolls 6 are provided in parallel with a gap therebetween, and the main crushing roll 5 and the auxiliary crushing roll 6 are arranged in a plurality of pieces displaced by a half pitch in the longitudinal direction of the rolls. Annular projection 7
And an annular protrusion 8, and a distance d between the annular protrusions 7, 8.
Is set to be smaller than the thickness D of the plate-shaped residual soil improving material 9. Further, a pressing roller 10 for pressing the upper surface of the plate-shaped residual soil improving material 9 may be provided above the vibration chute 3.

[0005]

1 to 7 show an embodiment of the present invention. In FIG.
1 and a movable molding unit 12 and a number of intermediate molding units 13 interposed therebetween, and a mixture inlet 1 is provided at a central portion of a fixed molding unit 11 fixed to a support 14.
The mixture supply pipe 16 is connected to the inlet 15 through an on-off valve 17.

A jack holding member 20 to which a hydraulic jack 19 for pressing the movable molding unit 12 is fixed is fixed to the support base 14, and a liquid pump 22 driven by an electric motor 21 is connected via a check valve 23. It is connected to the hydraulic jack 19. The fixed molding unit 11
The side rails 46 extending in the front-rear direction are erected and fixed over both left and right sides of the jack holding member 20 and a plurality of wheels 18 attached to the left and right sides of the movable molding unit 12. 46.

A concave portion 24 for accommodating a residual soil improving material is provided on a surface of the fixed molding unit 11, the movable molding unit 12, and each intermediate molding unit 13 facing each other. 25 are provided,
Intermediate molding unit 1 in the fixed molding unit 11
A seal ring 26 made of an elastic material such as rubber is fitted in a groove around a portion opposed to 3, and a groove provided around the surface of the movable molding unit 12 in each intermediate molding unit 13 is also fitted into the groove. The seal ring 26 is fitted.

A drain hole 2 is provided at the lower part of each intermediate molding unit 13.
7, a surface of the fixed molding unit 11 facing the intermediate molding unit 13, a surface of the movable molding unit 12 facing the intermediate molding unit 13, and a surface on both sides of the intermediate molding unit 13. 28
Is abutted.

A transport conveyor 2 is provided below the filter press 1 for advancing and transporting the plate-like residual soil improving material 9 discharged from the filter press 1, and the transport conveyor 2 is provided in front of the transport conveyor 2. A vibrating chute 3 comprising a plate-shaped chute 29 and a vibrator 30 connected to the chute 29 is provided obliquely downward from the front end of the chute 29.

At a position close to the lower end of the vibrating chute 3, a crushing main roll 5 rotated by a driving device 4 is provided, and a crushing auxiliary roll is provided diagonally above the crushing main roll 5. 6 is provided, and the main roll 5 for crushing is provided.
The crushing auxiliary roll 6 extends in the left-right direction, and the crushing main roll 5 is provided with a large number of annular protrusions 7 arranged at a constant pitch P. An annular projection 8 arranged at a constant pitch P is provided, and the annular projection 7 of the crushing main roll 5 and the annular projection 8 of the auxiliary crushing roll 6 are arranged at a half pitch in the roll longitudinal direction. Are only displaced.

The crushing main roll 5 is rotated by the driving device 4 in the moving direction of the plate-shaped residual soil improving material 9, and crushed by a driving gear 32 fixed to a drive shaft 31 of the crushing main roll 5. Driven gear 3 fixed to driven shaft 33 of auxiliary crushing roll 6
4 are engaged with each other, and the crushing auxiliary roll 6 is also rotated in the moving direction of the plate-shaped residual soil improving material 9.

The surface connecting the center of the main crushing roll 5 and the center of the auxiliary crushing roll 6 is perpendicular to the extended surface of the upper surface of the chute 29. 90 ° so that it is located in front of the moving direction of
A pressing roller 10 which is set at an angle of + α and presses the upper surface of the plate-shaped residual soil improving material 9 is disposed above the lower part of the chute 29, and a straight line connecting each annular protrusion 7 in the main crushing roll 5. The distance d from the straight line connecting the annular projecting portions 8 of the crushing auxiliary roll 6 is a plate-like residual soil improving material 9.
Is set to be smaller than the thickness D.

In the case of manufacturing a plate-shaped residual soil improvement material, first, the hydraulic jack 19 is extended, and the fixed molding unit 11, each intermediate molding unit 13 and the movable molding unit 12 are brought into close contact with each other, and then opened and closed. The valve 17 is opened, and a high-pressure driving pump (not shown) is operated so that the mixture of the residual soil slurry and the time-hardening material such as cement passes through the mixture supply pipe 16 and the on-off valve 17, It is fed into the filter press 1 at high pressure. After the mixture is fed into the filter press 1 and completely filled, the on-off valve 17 is closed, the operation of the driving pump is stopped, and the mixture in the filter press 1 is pressurized and dehydrated.

After performing a predetermined amount of pressurizing and dewatering, the hydraulic jack 19 is relaxed, and while the movable molding unit 12 and the intermediate molding unit 13 are successively opened, the dehydrated plate-shaped residual soil improving material 9 is filtered. It is taken out from the press 1 and placed on the conveyor 2.

The plate-shaped remnant soil improving material 9 which has been transported forward by the transport conveyor 2 slides on the vibrating chute 3 and is pressed by the pressing roller 10 to form the crushing main roll 5 and the crushing auxiliary. And a large number of annular projections 7 on the main crushing roll 5.
And the large number of annular projections 8 of the crushing auxiliary roll 6 presses the plate-shaped remaining soil improving material 9, and the plate-shaped remaining soil improving material 9 is crushed to a substantially constant size in the left-right direction. Since the rear side of the plate-shaped residual soil improving material 9 is pressed by the holding roller 10 so as not to rise from the chute 29, the auxiliary crushing roll 6 deviated forward from the main crushing roll 5. Thereby, the plate-shaped surplus soil improving material 9 is crushed into a substantially constant size in the front-rear direction, and falls as crushed pieces 35. FIG. 8 shows a crushing line in the case of crushing the plate-shaped surplus soil improving material 9.

FIGS. 9 and 10 show other examples of the main roll 5 for crushing and the auxiliary roll 6 for crushing.
A large number of annular disks 37 are fitted at regular intervals on the main roll shaft 36, and cylindrical spacers 38 are fitted between adjacent annular disks 37, and a hole edge of each annular disk 37 is formed. The key 39 provided on the main roll shaft 36 is fitted into a key groove 40 provided on the main roll shaft 36 to form the crushing main roll 5 having a large number of annular projections 7.

A large number of circular disks 42 are
Are fitted at regular intervals, and a cylindrical spacer 43 is fitted between adjacent annular disks 42, and a key 44 provided at the hole edge of each annular disk 42 is attached to the auxiliary roll shaft 41. An auxiliary crushing roll 6 having a large number of annular projections 8 is fitted in the provided key groove 45.

[0018]

According to the present invention, a chute 3 extending obliquely downward from the front end of the conveyor 2 is provided at the front of the conveyor 2 extending forward from the lower part of the filter press 1. Diagonally below shoot 3
A crushing main roll 5 and a crushing auxiliary roll 6 which are rotated by the drive device 4 and extend in the left-right direction are provided in parallel with a space therebetween, and the crushing main roll 5 and the crushing auxiliary roll are provided. 6 is provided with a large number of annular projections 7 and annular projections 8 which are displaced by a half pitch in the longitudinal direction of the roll, and the distance d between the annular projections 7 and 8 is set to a plate-shaped residual soil improving material 9. Thickness D
Since it is set smaller than that, the plate-shaped remnant soil improving material 9 immediately after being discharged from the filter press 1 can be crushed to a predetermined size with high efficiency by a simple means.

[Brief description of the drawings]

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

FIG. 2 is an enlarged side view showing a part of FIG. 1;

FIG. 3 is an enlarged front view showing a part of a main roll for crushing and an auxiliary roll for crushing in FIG. 1;

FIG. 4 is a side view showing the vicinity of a filter press.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a partially cutaway longitudinal side view showing a filter press.

FIG. 7 is a longitudinal sectional side view showing a part of FIG. 6 in an enlarged manner.

FIG. 8 is a plan view showing a crushing line of the plate-shaped residual soil improving material.

FIG. 9 is a partially cutaway front view showing another example of the main crushing roll and the auxiliary crushing roll.

FIG. 10 is a longitudinal sectional side view showing another example of the main crushing roll and the auxiliary crushing roll.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filter press 2 Conveyor 3 Chute 4 Driving device 5 Main roll for crushing 6 Auxiliary roll for crushing 7 Annular protruding part 8 Annular protruding part 9 Plate-shaped residual soil improving material 10 Pressing roller 11 Fixed forming unit 12 Movable forming unit 13 Intermediate Molding unit 14 Support stand 15 Inlet 16 Mixture supply pipe 17 On-off valve 18 Wheel 19 Hydraulic jack 20 Jack holding member 21 Electric motor 22 Liquid pump 23 Check valve 24 Concave portion for storing residual soil improving material 25 Flow hole 26 Seal ring 27 Drain hole 28 Filter cloth 29 chute 30 vibrator 31 drive shaft 32 drive gear 33 driven shaft 34 driven gear 35 crushed piece 36 main roll shaft 37 annular disk 38 cylindrical spacer 39 key 40 key groove 41 auxiliary roll shaft 42 annular disk 43 cylindrical spacer 44 key 45 key groove 46 side groove Rule

──────────────────────────────────────────────────続 き Continuing from the front page (73) Patent holder 591043581 Tokyo, Japan 2-81-1, Nishishinjuku, Shinjuku-ku, Tokyo 46-59 Ohara Nakahara, Ichitobata-ku Nippon Steel Corporation Machinery & Plant Division (72) Inventor Shunji Uryu 46-59 Ohara Nakahara, Tobata-ku, Kitakyushu-shi Nippon Steel Corporation Machinery & Plant Division (72) Invention Person Mitsuya Murata 46-59, Nakahara, Tobata-ku, Kitakyushu Nippon Steel Corporation Machinery & Plant Division (72) Inventor Satoshi Saito 2-5-1-14 Minamisuna, Koto-ku, Tokyo Takenaka Corporation Technical Research Institute (72) Inventor Toshiaki Ishise 2-5-14 Minamisuna, Koto-ku, Tokyo Takenaka Corporation Technical Research Institute (72) Inventor Yoshi Suzuki 2-5-14 Minamisuna, Koto-ku, Tokyo Takenaka Corporation Technical Research Institute (72) Inventor Yasushi Yasushi 8-21-1, Ginza, Chuo-ku, Tokyo Co., Ltd. 8-21-1, Ginza, Chuo-ku, Tokyo Co., Ltd.Takenaka Civil Engineering Co., Ltd. (72) Inventor Tsuneyasu Onishi 8-2-1-1, Ginza, Chuo-ku, Tokyo Co., Ltd.Examiner, Takenaka Civil Engineering Co., Ltd.Examiner Takashi Kuroishi (56) JP-A-63-28457 (JP, A) JP-A-4-94741 (JP, A) JP-A-50-134255 (JP, A) JP-A-57-3790 (JP, A) , U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B02C 4/00-4/44 B02C 19/12 B01D 25/12 C02F 11/00-11/20

Claims (2)

(57) [Claims] 1. A chute (3) extending obliquely downward from the front end of the conveyor (2) is provided at the front of the conveyor (2) extending forward from the lower part of the filter press (1). Main crushing roll 5 which is rotated by the driving device 4 and extends in the left-right direction.
And the auxiliary crushing rolls 6 are provided in parallel with a gap therebetween, and the main crushing roll 5 and the auxiliary crushing roll 6 are arranged in a plurality of pieces displaced by a half pitch in the longitudinal direction of the rolls. Annular projection 7 and annular projection 8 are provided.
An apparatus for crushing plate-shaped residual soil improving material, wherein the interval d of 8 is set smaller than the thickness D of the plate-shaped residual soil improving material 9. 2. A crushing device for plate-like residual soil improving material according to claim 1, further comprising a pressing roller for pressing an upper surface of the plate-like residual soil improving material on an upper portion of the chute.