JPH0539129A - Volumetric feeder for earth and sand - Google Patents

Abstract

PURPOSE:To feed a fixed amount of objective earth and sand completely and continuously and prevent a volumetric feeder from being clogged with foreign material by forming both the sides of cylindrical wall of a casing in a semicircle shape so as to meet the rotating locus of a rotor, and forming it out of elastic material. CONSTITUTION:While earth and sand which is put in a casing 3 from a hopper 4 is being housed in the earth and sand measurement recessed part 1b of a rotor 1 which is rotated by a driving motor, the recessed part 1b rotates and travels to the lower part opening part side from the upper opening part side. In this process, when the recessed part passed along the semicircular wall part 3b of the casing 3, the earth and sand is discharged from the lower opening part after it is measured with the opening part of the recessed part 1b tightly closed. At this time, both the side semicircular wall parts 3b, 3b of the casing are formed out of elastic material, so it is possible to prevent foreign material such as gravel mixed in earth and sand from being bitten. Moreover, earth and sand which sticks and remains on the inner surface of the recessed part 1b and so forth are scraped off by the scraping vane 2b of a rotor cleaner 2 which rotates simultaneously with the rotor 1 in order. It is thus possible to provide complete feed of earth and sand.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for quantitatively supplying earth and sand in civil engineering and construction work and dredging work, and particularly for improving the ground such as soft ground or landfill by mixing with solidifying material such as cement. The present invention relates to a constant-quantity supply device used for continuously constant-quantity supply of sediment such as sludge and sludge according to a mixing ratio with a solidifying material during ground solidification processing.

[0002]

[Prior art and its problems] In civil engineering and construction work and dredging work, a ground solidification treatment method is used in which solidification materials such as cement are mixed and hardened to improve the ground such as soft ground or landfill. However, solidification treatment machines that continuously mechanically mix the solidification material into the target sediment have come to be used, but the quantitative supply of the solidification material according to the mixing ratio is almost complete, while sludge and sludge Quantitativeness was lacking for the target sediment such as, especially those with relatively high water content such as dredged soil or highly sticky soil. That is, since a screw conveyor, a bucket conveyor, and a pressure pump were used as the conventional sediment supply device, it was impossible to continuously supply a fixed amount in proportion to the mixing ratio with the solidifying material, and the mixing amount with the solidifying material was uneven. Therefore, the improvement effect of the ground is about 30%, which is extremely low at less than half of the solidification strength obtained by the mixing test performed by uniformly mixing,
Moreover, when foreign matter such as gravel, empty cans, and wood chips mixed in the sediment in the process of supplying the target sediment gets caught and caught between the spiral fin and the casing in the case of a screw conveyor, for example, it causes clogging. However, it is inefficient and uneconomical because it has various problems in this type of civil engineering industry such as quality control and facility management on site, such as the time and effort required for its removal.

[0003]

The present invention has been made in view of such conventional circumstances, and the technical problem to be solved is the object of sludge, sludge and the like mixed with a solidifying material such as concrete. Quantitative determination of new earth and sand that can reliably and continuously quantitatively supply the earth and sand according to the mixing ratio with the solidifying material, and that is equipped with measures to prevent clogging by foreign matter such as gravel, empty cans, and wood chips The purpose is to provide a supply device.

[0004]

The technical means taken by the present invention to achieve the above-mentioned object are: a rotor having a plurality of semicircular earth and sand measuring recesses adjacent to each other in the outer peripheral rotation direction of a rotating shaft; A rotor cleaner having an earth and sand removing member on the outer circumference of the shaft, the rotor and the rotor being synchronously rotated with the rotor along the circular inner surface of the earth and sand measuring concave portion of the rotor, and the rotor cleaner and the rotor are horizontally extended in parallel. It is composed of a vertically-opened rectangular tubular casing and a sediment loading hopper that is fixedly installed in the upper opening of this casing, and has both side cylindrical walls excluding the upper and lower opening sides of the casing that face each other in the rotation direction of the rotor. The rotor is formed in a semicircular shape along the rotational movement locus of the open upper edge of each earth and sand measuring concave portion, and both side semicircular wall portions are formed of elastic material. To. Further, an elastic material is detachably attached to an open upper edge portion of each earth and sand measuring concave portion of the rotor.

Further, a material having excellent slidability is provided on each of the circular inner surface of each earth and sand measuring recess of the rotor, the inner surface of the cylinder wall of the casing, and the inner surface of the earth and sand charging hopper.

[0006]

According to the above-mentioned technical means of the present invention, the earth and sand introduced into the casing from the earth and sand hopper is rotated to the upper opening side of the rotating rotor (approximately right below the hopper). Along the semi-circular wall portion formed by the elastic material of the casing in the process in which the sediment measuring recess rotates and moves from the upper opening side to the lower opening side while fully receiving and accommodating in the located sediment measuring recess. Weighed when passing. That is, when the sediment measuring recesses of the rotor pass along the semicircular wall of the casing, the openings of the sediment measuring recesses are closed in the process of sliding the open upper edge along the semicircular wall. It becomes a closed and sealed room to measure the amount of earth and sand, and to discharge the measured amount of earth and sand from the lower opening of the casing and to supply it to a solidification processor that mechanically mixes it with a solidifying material such as concrete. . And
Deposits such as sediment remaining on the circular inner surface of each sediment measurement recess of the rotor are scraped off by the sediment removal member of the rotor cleaner that rotates in synchronization with the rotor, and deposits and deposits of deposits that hinder the constant supply of the rotor Prevent under synchronous rotation operation.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. A constant amount supply device A includes a rotor 1, a rotor cleaner 2 which rotates in synchronization with the rotor 1, a rotor cleaner 2 and the rotor 1. A casing 3 which is vertically open and has a rectangular tubular shape which is built-in horizontally in parallel, a hopper 4 for earth and sand which is fixedly installed in an upper opening of the casing 3, a rotational power is transmitted to the casing 3, the rotor 1 and the rotor cleaner 2. It comprises a pedestal 6 on which a drive motor 5 is installed, and measures the relationship between the rotor 1 and the casing 3 that rotates the earth and sand a such as sludge and sludge that are put into the casing 3 from the earth and sand hopper 4 while measuring the casing 3. It is discharged from the lower opening to the outside of the casing 3 and mechanically mixed with a solidifying material such as concrete as in the usage example shown in FIG. That is to dispensing to the mixer 7 the solidified processor B.

[0008] The rotor 1 is horizontally installed in the center of the casing 3 so as to divide the interior into upper and lower parts, and receives and stores the earth and sand a fed from the earth and sand hopper 4, and measures the earth and sand a. 3 has an end shape that is rotatably inserted into and supported by a bearing 9 that is threadedly mounted on the cylindrical wall via a mounting plate 8 and has a length that is mounted in a penetrating manner between the two opposed cylindrical walls. A plurality of semicircular earth and sand measuring recesses 1b are provided adjacent to each other in the outer peripheral rotation direction of the rotating shaft 1a.

The earth and sand measuring concave portion 1b of the rotor 1 is a large-diameter disk wall 1c formed on both sides of an end of the rotary shaft 1a with thick plates to have a predetermined diameter.
Is fixedly arranged, and a plurality of recessed portion forming bodies 1d curved in a semicircular cross section (substantially gutter-shaped) across the large-diameter disc wall 1c on both sides are provided at the open upper edge of the large-diameter disc wall 1c at the circumferential edge thereof. And the open upper end edge portions of the recess structure bodies 1d are abutted against each other and fixedly arranged as shown in the drawing so as to be adjacent to each other in the outer peripheral rotation direction of the rotary shaft 1a.

Further, two small-diameter disk walls 1e formed to have a diameter along the curved back surface of each earth and sand measuring concave portion 1b are fixedly mounted on the rotary shaft 1a between the large-diameter disk walls 1c on both sides of the rotor 1 at intervals. In addition, the reinforcement formed to have a plate width extending from the circumferential edge of the small-diameter disk wall 1e to the open upper edge of each recessed structure 1d abutting against each other and extending between the large-diameter disk walls 1c on both sides. The plates 1f are radially fixedly arranged as shown in the figure, and the open upper end edge of each recessed structure 1d is fixedly supported by the tip edge of each reinforcing plate 1f to provide rigidity against earth pressure (FIG. 3, FIG. (See FIG. 4). Furthermore, an elastic material 1g such as a hard rubber material is removably attached to the tip edge of each reinforcing plate 1f positioned between the open upper edge portions of each earth and sand measuring concave portion 1a of the rotor 1, and each earth and sand measuring concave portion. On the circular inner surface of 1a, a surface plate 1h made of a material having excellent slidability, such as a polymer resin material, is attached by bolts or adhesives, so that earth and sand a such as highly viscous sludge hardly adheres and falls off. It should be taken into consideration so that it can be easily scraped off quickly by the earth and sand removing member of the rotor cleaner 2 which will rotate in synchronization with the rotor 1, which will be described later.

The rotor cleaner 2 is laterally disposed in parallel with the rotor 1 at the lower opening side of the casing 3 located right below the rotor 1 in the center of the casing 3, and is placed in the earth and sand measuring recess 1b of the rotor 1. The earth and sand that are received and stored and weighed down from the recess 1b are used to scrape off the earth and sand adhering to the circular inner surface of the recess 1b under the synchronous rotation operation with the rotor 1. Similarly, a bearing which is threadedly mounted on the cylindrical wall through a mounting plate 10 in such a length that it is mounted in a penetrating manner between the opposite cylindrical walls of the casing 3.
A sand removing member is provided on the outer periphery of a rotary shaft 2a formed to have an end shape that is rotatably inserted into and supported by 11, and that is rotated along the circular inner surface of the soil measuring recess 1b of the rotor 1.

The earth and sand removing member of the rotor cleaner 2 has a plate width of a radius along the circular inner surface of the earth and sand measuring concave portion 1b of the rotor 1 with the rotating shaft 2a as a fulcrum, on both sides of the rotor 1 large diameter disc wall 1c.
There are two scraping blades 2b formed to have a length that extends between them. The two scraping blades 2b are fixedly arranged on the outside of the rotating shaft 2a in linear directions opposite to each other. It is provided on the outer circumference of. Then, an elastic material 2c such as a hard rubber material is removably attached to the tip edge portion of the scraping blade 2b (see FIG. 3) to increase the contact force with respect to the circular inner surface of the earth and sand measuring concave portion 1b of the rotor 1 and the circular shape. At the same time as ensuring the effect of scraping off the adhered matter from the inner surface, the foreign matter such as gravel, empty can, and wood chips mixed in the earth and sand a is prevented from being caught.

The casing 3 which houses the rotor 1 and the rotor cleaner 2 configured as described above is of a size that allows the rotor 1 to be installed horizontally, and the rotor 1 and the rotor cleaner 2 are vertically arranged as described above. It is formed into a rectangular tubular shape with the upper and lower sides opened at a desired height so that it can be housed in parallel and built in, and the inner surface of the tubular wall has a polymeric resin material similar to the circular inner surface of each earth and sand measuring concave portion 1b of the rotor 1. A surface plate (3a) such as the above is attached with a bolt or an adhesive. An elastic material 1g having its both side cylindrical walls excluding the upper and lower opening portions facing each other in the rotating direction of the rotor 1 attached to the open upper end edge of each earth and sand measuring concave portion 1b of the rotor 1, that is, each edge portion thereof.
Is formed in a semicircular shape along the rotational movement locus, and both side semicircular wall portions 3b are formed of an elastic material.

The semi-circular wall portion 3b is inclined toward the rotary shaft 1a of the rotor 1 toward the upper and lower openings of the casing 3 and is inclined at an angle of, for example, 45 °. Each of the earth and sand measuring recesses 1b of the rotor 1 is fixedly arranged vertically with a length of substantially the entire length, and a hard rubber material or the like is bolted and fixed between the inclined edges of the upper and lower inclined walls 3c. It is formed in a semicircular shape along the rotational movement locus of the open upper edge of the.

On the other hand, the rotor 1 and the rotor cleaner 2
A window 13 is opened on both side cylindrical walls of the casing 3 that rotatably supports the side wall, and a side plate 3d formed to have a size that completely closes the window 13 is attached with bolts, and a center is formed in the side plate 3d. The side plate is formed by projecting the rotary shaft 1a of the rotor 1 through the hole 14.
The rotor 1 is rotatably inserted and supported by a bearing 9 which is screwed to the 3d via a mounting plate 8, and the rotor 1 is laterally built into the casing 3 between the semicircular wall portions 3b on both sides. 2 through which the rotary shaft 2a is projected and rotatably inserted into and supported by a bearing 11 which is screwed to the side plate 3d via a mounting plate 10, and a rotor cleaner 2 is horizontally installed directly under the rotor 1 in a casing 3. . Then, the rotors 2a of the casing 3 protruding from the side plate 3d and the rotary shaft 2a end portion of the rotor 1 and the rotary shaft 1a end portion of the rotor 1 are fitted with gears 16 and 17 which are in mesh with each other, so that the rotor cleaner 2 is fitted. 2 so that it rotates in synchronization with rotor 1. 18 in the figure
Is a sprocket fitted and arranged at the end of the rotating shaft 1a of the rotor 1. By the way, in this embodiment, the rotation reduction ratio of the rotor 1 and the rotor cleaner 2 is set to 1: 3, that is, the gears 16 and 17 are formed to have a size of 1: 3, and the earth and sand measuring recesses of the rotor 1 are formed. The open top edge of 1b and the scraper blade 2b of rotor cleaner 2 do not interfere with each other.

Further, the large-diameter disk wall 1c on both sides of the rotor 1 is located on the upper opening side of the inner surface of the cylindrical wall on both sides of the casing 3 in which the rotor 1 and the rotor cleaner 2 are rotatably supported horizontally.
The semicircular lower edge is loosely fitted into the circumferential groove 19 that is recessed over the entire circumference of the end surface of the disk, and is directed toward the upper opening side of the casing 3 from the circular edge of the large-diameter disk wall 1c. And a flexible seal wall 20 is fixedly installed vertically, and a bearing 9 for rotatably inserting and supporting the rotor 1 and the rotor cleaner 2 by the earth and sand a introduced into the casing 3 from the earth and sand hopper 4.
Be careful not to get into the 11 side. The sealing wall 20 is formed of hard rubber or the like into a semicircular shape (half-moon shape) along a part of the circumference of the large-diameter disk wall 1c of the rotor 1, and is fixed to the inner surfaces of both side cylinder walls of the casing 3. A semi-circular holding plate 22 is also used for bolting to a circular mounting plate 21 so as to be detachably fixed to the upper opening side of the casing 3.

As described above, the casing 3 which houses the rotor 1 and the rotor cleaner 2 has a mounting flange 3e attached to the outer peripheral edge of the opening of the upper end of the casing 3 and is secured to the upper beam frame 6a of the frame 6 with bolts. It is fixed by tightening and installed on the pedestal 6 in a suspending manner, and the rotating shaft of the rotor 1
1a A chain 24 is bridged from a sprocket 18 fitted on the end of the casing 1 to a sprocket 23 of a drive motor 5 with a variable speed machine installed on a pedestal 6, and a soil loading hopper 4 is bolted to the upper opening of the casing 1. And fix it. 25 in the figure
Is a cover for covering the gears 16 and 17, the sprockets 18 and 23, and the chain 24 group.

The earth and sand charging hopper 4 is formed in a normal hopper shape in which the lower opening is opened and expanded upward as the opening size of the upper opening of the casing 3, and the inner surface of the hopper wall is made of polymer resin. A surface plate 4a made of a material or the like is attached by a bolt or an adhesive or the like, and a stirrer 26 is built in horizontally on the lower opening side. The stirrer 26 is rotatably inserted and supported by bearings 28, which are screwed by mounting plates 27 on opposite hopper walls opposite to each other, so that the rotating shaft 26a is horizontally installed in the same direction as the rotor 1 in the casing 3. A sprocket 29 is fitted on the end of the rotary shaft 26a protruding from the hopper wall, and a chain 31 is laid from the sprocket 29 to a sprocket 30 fitted on the end of the rotary shaft 1a of the rotor 1. As in the case of No. 1, it is rotated by the power from the drive motor 5.

Next, a description will be given of an example of use of the earth and sand a fixed amount supply device A of the present embodiment configured as described above. As shown in FIG. 7, a solidifying material feeder for supplying a solidifying material such as concrete.
When 32 and the mixer 7 for mechanical mixing are combined with the solidification processor B installed on the pedestal 33, the earth and sand a charged in the casing 3 from the earth and sand hopper 4 is rotated by the power from the drive motor 5. Opening when the earth and sand measuring recess 1b passes along the semicircular wall 3b of the casing 3 in the process of rotating and moving from the upper opening side to the lower opening side while receiving and accommodating it fully in the earth and sand measuring recess 1b. In the process of sliding the upper edge along the semicircular wall 3b, each earth and sand measuring concave portion 1B measures the earth and sand a by forming a closed room with its opening closed. The soil a is continuously discharged according to the mixing ratio of the solidifying material supplied from the solidifying material feeder 32 into the mixer 7 of the solidification processing machine B which mechanically mixes the solidifying material such as concrete while discharging from the lower opening of the casing 3. Target Is supplied in a fixed amount. Then, the rotor 1 that has finished supplying the earth and sand a to the mixer 7.
In the earth and sand measuring recesses 1b, the adhered matters such as earth and sand adhered to the circular inner surface are scraped off by the scraping blades 2b of the rotor cleaner 2 which sequentially rotates in synchronization with the rotor 1, and the adhered materials are scraped off. The concave portion 1b is again rotated and moved from the lower opening portion to the upper opening portion of the casing 3 to repeatedly receive and store the earth and sand a from the earth and sand input hopper 4 and measure it.

In the above embodiment, the rotor 1
As a sediment removing member of the rotor cleaner 2 for scraping off deposits such as sediment remaining on the circular inner surface of each of the sediment measuring recesses 1b, two scraping blades 2b are formed on the outer side of the rotary shaft 2a in linear directions opposite to each other. Although a detailed description has been given as a configuration in which they are fixedly arranged, a rotating brush structure may be used in which bristles with appropriate elasticity are planted on the outer circumference of the rotating shaft 2a. In the case where the rotor cleaner 2 has the rotating brush structure as described above, each sediment measuring concave portion 1b of the rotor 1 which has finished supplying the measuring soil a is rotatably moved from the lower opening portion of the casing 3 to the upper opening portion thereof. Side half-circle wall portion 3b of the casing 3 on the side
It is located on the side and installed horizontally. That is, the earth and sand scraped from the earth and sand measuring concave portion 1b by being horizontally installed diagonally below the rotor 1 rather than directly below the rotor 1 is reliably supplied to the mixer 7 of the solidification processor B without remaining on the brush. Like

[0021]

The quantitative supply device for soil and sand according to the present invention is constructed as described above, and therefore has the following operational effects.

.. The process of rotating and moving the earth and sand metering recess from the upper opening side to the lower opening side while fully receiving and accommodating the earth and sand charged into the casing from the earth and sand charging hopper into the earth and sand measuring recess of the casing of the rotor that rotates. At the time of passing along the semicircular wall formed by the elastic material of the casing, the opening of each sediment measuring recess is blocked in the process of sliding along its open upper edge along the semicircular wall. In a mixer of a solidification processor that mechanically mixes with a solidifying material such as concrete as described in detail in the embodiment while discharging the measured sand and sand from the lower opening of the casing. A fixed amount can be continuously supplied according to the mixing ratio with the solidifying material supplied from the solidifying material feeder, and at the same time, it is attached to the circular inner surface of each sediment measuring recess of the rotor that has finished supplying earth and sand to the mixer. The deposits of sediment such residual can be scraped off by the soil removing member of the rotor cleaner rotating rotor and synchronous. Therefore, the target soil such as sludge and sludge to be mixed with the solidifying material such as concrete can be supplied reliably and continuously in a fixed amount according to the mixing ratio with the solidifying material.

.. The semi-circular wall of the casing that slides along the open upper edge of the rotor's earth and sand measuring recess in the process of fully receiving and storing the earth and sand is made of an elastic material, so it will not mix in the earth and sand. It is possible to prevent foreign matter such as gravel, empty cans, and wood chips from being caught. Therefore, it takes time and effort to remove the clogging as in the past, such as the strength resistance that has solved all the problems in terms of quality control, facility management in the field, etc.
It was possible to provide a fixed quantity supply device having excellent wear resistance.

[Brief description of drawings]

FIG. 1 is a front view showing an example of an embodiment of a quantitative supply device for soil and the like according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an enlarged vertical cross-sectional view of the main part taken along the line III-III in FIG.

FIG. 4 is a vertical cross-sectional view taken along the line IV-IV in FIG.

5 is a cross-sectional view taken along the line VV of FIG.

FIG. 6 is a cross-sectional view showing a part of FIG. 3 in an enlarged manner.

FIG. 7 is a front view showing an example of use of the quantitative supply device for soil and the like of the present invention.

[Explanation of symbols]

1 ... Rotor 1a ... Rotating shaft 1b ... Sediment measuring recess 1g ... Elastic material 1h ... Surface material (material with excellent sliding property) 2 ... Rotor cleaner 2a ... Rotating shaft 2b ... Scraping blade (sediment removing member) 3 ... Casing 3a … Surface materials (materials with excellent sliding properties) 3b… Semi-circular wall parts 4… Sand-sand charging hopper 4a… Surface materials (materials with excellent sliding properties)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shoji Umura 4-1-1 Koraibashi, Chuo-ku, Osaka-shi, Osaka Toyo Construction Co., Ltd.

Claims (3)

[Claims] 1. A rotor having a plurality of semi-circular earth and sand measuring recesses adjacent to each other in the outer peripheral rotation direction of a rotating shaft, and a sand removing member on the outer circumference of the rotating shaft, wherein the earth and sand removing member comprises the earth and sand measuring recesses of the rotor. A rotor cleaner that rotates in synchronism with the rotor along the inner circular surface of the rotor, a vertically open rectangular tubular casing that horizontally houses the rotor cleaner and the rotor in parallel, and is fixed to the upper opening of the casing. A semi-circular shape consisting of an earth-and-sand charging hopper to be equipped, and both side cylindrical walls of the rotor, which are opposed to each other in the rotation direction of the rotor, except for the upper and lower opening sides, along the rotational locus of the open upper edge of each earth and sand measuring concave portion of the rotor. And a semi-circular wall portion on both sides thereof formed of an elastic material. 2. The quantitative supply device for earth and sand according to claim 1, wherein an elastic material is detachably attached to an open upper edge of each earth and sand measuring recess of the rotor. 3. The earth and sand according to claim 1, wherein the circular inner surface of each earth and sand measuring recess of the rotor, the inner surface of the cylinder wall of the casing, and the inner surface of the earth and sand hopper are each provided with a material having excellent lubricity. Quantitative supply device for etc.