JPS5837003B2 - Mud slurry processing equipment - Google Patents

Description

[Detailed Description of the Invention] These inventions are mud slurry processing devices that attempt to effectively reuse mud such as excavated soil or topsoil generated at construction sites, etc. Until now, for example, when underground polling The excavated soil that is generated is muddy soil that contains a large amount of water, and when it is transported outside the site, it often stains surrounding roads and becomes a kind of pollution problem.

In addition, in many cases, a steel pipe shaft, concrete shaft, etc. is inserted into the polled hole, and concrete is poured into the gap between the polled hole and the shaft in order to provide supporting force.

These inventions turn mud that was previously discarded into slurry,
A solidifying material is mixed therewith and filled into the above-mentioned gaps, and the required strength can be obtained after a predetermined period of time has elapsed.

The strength can be freely adjusted by adjusting the amount of solidifying agent added, and the maximum strength is 1.
00k! In some cases, a compressive strength of 97 m was obtained.

What is required at this time is to completely slurry the mud, then add additives and mix thoroughly.

In addition, for example, when backfilling after installing an open cut culvert in subway construction, currently mud is put in and water is sprinkled from the top for compaction filling, but voids inevitably form in the middle, and it takes a short period of time after the road surface is paved. There are many cases where the road surface caves in.

Even in such a case, if the slurry is made into a slurry, mixed with a solidifying agent, and then filled, no voids will be formed and the bearing capacity of the soil will be improved, thereby preventing the above-mentioned cases.

Additionally, the devices according to these inventions can be used to dispose of industrial waste, e.g.
Plating sludge, etc. Can also be used to disperse cake after dehydration into slurry to prevent solidification and release of harmful substances.

Until now, batch mixers and the like have been used for crosstalk in such applications, but they have several serious drawbacks that hinder their performance.

That is, one drawback of conventional batch mixers is that they are mixed in a large vessel, which results in non-uniform kneading of the slurry and solidifying agent, which affects the stability of the strength.

If an attempt is made to knead this completely uniformly, it will take a long time to mix and mix, which will significantly reduce workability.

Therefore, if it is attempted to obtain a device having the same performance and capacity as the continuous type device according to the present invention, the device will become larger and more expensive, and it may not be possible to use it particularly in a narrow space such as a building construction site.

These inventions are aimed at making the device more compact and increasing its performance and capacity.

Next, these inventions will be explained in detail based on illustrations.

FIG. 1 and FIG. 2 are a plan view and a front view, respectively, of a mud slurry processing apparatus of the first invention.

In the figure, reference numeral 52 denotes a slurry quantitative supply device, which is installed equiangularly in a cylindrical section inside the mud hopper 1 which opens upward and has a discharge port 7 at the bottom. is attached to the fixed blade 2 and the shielding plate 6 above the discharge port 7.
It is said that it is possible to rotate by passing between the

Further, a scraping blade 5 that passes close to the upper surface of the shielding plate 6 is attached to the rotating shaft 4.

Reference numeral 8 designates a discharge chute for discharging mud supplied in a fixed amount from the discharge port 7, and reference numeral 9 designates a driving device for rotating the feed blade 3 and the scraping blade 5.

Reference numeral 10 denotes a conveyor belt as an example of a transfer device, one end of which is placed below the discharge chute 8, and the tip thereof is directed diagonally upward.

15 is a continuous dispersion device having flexibility;
4, one rotating shaft 11 along the longitudinal force direction;
Helical sending blade 12 and stirring blade 1 centered on
It consists of 3.

A drive device 14 is connected to one end of the shaft 11 .

Further, a mud input portion 55 is formed at the end of the gutter 54 on the side of the belt conveyor 10, and a slurry discharge port 56 is formed at the opposite end.

For example, water is supplied as an additive liquid to the mud input section 55.

A concentration adjusting liquid supply device 53 is provided.

A mesh conveyor 17 covered with a moving screen 16 is arranged parallel to the continuous dispersion device 15 in a plan view and intersects with the continuous dispersion device 15 in a front view.

A chute 18 is provided between the discharge port 56 of the gutter 54 and the lower side of the mesh conveyor 17, and another chute 19 is provided between the upper side of the mesh conveyor 17 and the input portion 55 of the gutter 54.

A driving device 21 for driving the mesh conveyor 17 is provided at one end of the mesh conveyor 17, for example, at the upper end, and a chute 20 for supplying to the storage tank 22 is provided at the lower end of the mesh conveyor 17.

A method of producing mud slurry using the mud slurry processing apparatus configured as described above will be explained.

Mud generated by excavation or the like is put into a mud hopper 1.

The introduced mud is passed through the feed blade 3, which is set to rotate at a constant speed by the drive device 9, while loosening coarse or lumpy mud due to the vertical clearance between the fixed blade 2 and the feed blade 3.
The mud is sent over the bottom surface of the mud hopper 1 and discharged through a chute 8 from a discharge port 7 provided at the bottom of the shielding plate 6.

In other words, the mud is supplied in a fixed amount by the feeding blades 3 arranged in an equiangular radial manner.

The discharged mud is fed into a continuous dispersion device 15 by a belt conveyor 10.

The mud introduced into the base end of the continuous dispersion device 15 receives an additive liquid, such as water, from the concentration adjusting liquid supply 53 and is sent to the feeding blade 3,
The mixture is mixed and stirred by the stirring blade 4, and is carried upward against gravity to form a slurry.

The concentration can be adjusted to any desired value by changing the supply amount of the additive liquid.

The slurry mud is sent from a chute 18 to a mesh conveyor 17.

Here, the slurry is sorted by a moving screen 16 having a predetermined mesh installed on a mesh conveyor 17.

The slurry that has passed through the moving screen 16 flows down and is collected in the storage tank 22, and the coarse mud that did not pass through due to insufficient dispersion is drained by the moving screen 16 and sent from the chute 19 above the mesh conveyor 17 to the continuous dispersion device. 15, and is again sufficiently stirred and dispersed together with the mud continuously conveyed by the belt conveyor 10.

In this way, the continuous dispersion device 15 and the mesh conveyor 17 form a closed circulation circuit, and the slurry is continuously circulated and dispersed until it passes through the screen set to a predetermined mesh size.

Therefore, a uniformly dispersed slurry can always be obtained.

As explained above, according to the first invention, mud can be continuously and quantitatively supplied, and slurry having a desired concentration can be continuously produced.

Compared to the conventional patch method, a large amount of slurry can be produced in a short time using compact equipment.

Next is the second one. This invention will be explained below.

The second invention is the structure of the first invention with the addition of a configuration for supplying a solidifying admixture in a fixed amount.

Accordingly, one embodiment of the structure of the slurry continuous kneading apparatus which supplies a fixed amount of the solidifying admixture to the slurry among the structures of the second invention will be described with reference to FIGS. 3 and 4.

3 and 4 are a plan view and a front view, respectively, of the slurry continuous crosstalk device.

27 is a tank for receiving slurry mud flowing down from the mesh conveyor 17; 23, 24, 25 and 26;
are tanks for storing various solidification admixtures, and are an aggregate tank, an additive tank A1, an additive tank B, and an additive tank C, respectively.

These tanks 23 to 27 are arranged in a line in the figure, and one belt feeder 57 serving as a feeding device is disposed below the tanks 23 to 26.
A chute 40 is provided at the end of the tank 7 and below the tank 27.

Each of the tanks 23 to 26 is provided with a device for supplying a fixed amount.

The aggregate tank 23 has a cut gate device 2B that adjusts the height from the belt feeder 57, an additive tank A24,
The additive tank C25 and the additive tank C26 are provided with quantitative supply devices 35, 36, and 59, respectively.

A quantitative supply device 33 is provided in the slurry tank 27 .

These metering devices 33, 35, 36, and 59 are connected to drive devices 34, 37, and 3L32, respectively.

The drive device 39 is connected to and drives the belt feeder 57.

One end of a single-shaft continuous mixer 58 faces below the chute 40, and the single-shaft continuous mixer 58 is made to move relative to a belt feeder 57 serving as a feeding device and tanks 23 to 27, and is moved diagonally upward during manufacturing. The single-shaft continuous mixer 5B, which is mounted with its tip lifted up, has a flexible bottom, a mixing screw is arranged in the longitudinal direction of the gutter 41, and is connected to a drive device 60.

The mixing screw has a spiral body 50 formed around one shaft 51, and blades 49 are provided at appropriate positions.

The quantitative feeding device 59 is almost the same as the quantitative feeding device 52 of the first invention, and includes a scraping blade 42, a shielding plate 43, and a fixed blade 4.
4, a feed blade 45, a rotating shaft 46, and the like.

Note that 29, 30, and 4B are supply ports for replenishing the respective materials, and 47 is an overflow pipe.

The mixing ratio and type of additives vary depending on the properties of the slurry and the purpose of use, but examples of types include sand in the aggregate tank 23, cement in the additive tank A24, and powder mixture in the additive tank 25B. As the material and additive C, gypsum or the like is used.

The shape and arrangement of the tank are changed as necessary depending on the type and quantity of additives.

In addition, liquid admixtures may also be used.

A slurry processing according to a second invention, which combines the structure of the first invention with a structure for supplying a solidifying admixture in a fixed amount, will be described.

That is, after the mud is turned into slurry in the device part according to the first invention, this slurry is supplied from the storage tank 22 to the slurry tank 27 by a pump or the like (not shown).

The slurry is quantitatively supplied from the tank 27 into the chute 40 by the quantitative supply device 33 .

Additives are supplied quantitatively from each tank 24, 25, 26 to the device 3.
Aggregate tank 2 to be metered continuously by 5, 36, 59
The aggregate from No. 3 is height-adjusted by a cut gate device 28 and continuously weighed, conveyed by a belt feeder 57, and then fed into a single-shaft continuous mixer 58 along with slurry from a chute 40.

These materials are mixed in a uniaxial continuous mixer 58 by rotating the helical body 50 and the blades 49, working together with the flexible tube 41 to lift the slurry and additives diagonally upward while resisting gravity. A homogeneously mixed slurry is produced and discharged.

That is, while kneading is being performed, the single-shaft continuous mixer 58 is kept tilted at a certain angle from the horizontal position, and the material is moved by the gravitational force caused by this tilt.
Make it flow down toward the base end of 8.

Therefore, the feeding action of the material accompanied by this kneading within the single-shaft continuous mixer 5B mechanically pushes the material upward against gravity.

If the single-shaft continuous mixer 58 is tilted and operated in this way, the action of gravity will help in assisting the mixing.

From the above, it is possible not only to turn mud into a slurry, but also to continuously obtain a slurry mixed with additives of varying types and amounts depending on the purpose of use.

And, while it is more compact than a batch type, it is possible to process a small amount of mud into slurry in a short time.

In this way, all of these inventions can turn mud into slurry and reuse it by backfilling, so there is no need to dispose of the entire amount of mud that has been excavated, which has a great effect on reducing construction costs. It is something.

[Brief explanation of drawings]

1 and 2 show an embodiment of the mud slurry processing apparatus of the first invention, in which FIG. 1 is a plan view, FIG. 2 is a front view, and FIGS. 3 and 4 are examples of the second embodiment. FIG. 3 is a plan view and FIG. 4 is a front view of the slurry continuous kneading device portion of the mud slurry processing device of the invention. 1...Mud hopper, 2,44...Fixed blade, 3,45...Feeding blade, 4,46...
... Rotating shaft, 542 ... Scraping blade, 7
...Exhaust port, 8, 1819, 20, 31, 40
... Chute, 10 ... Belt conveyor, 13 ... Stirring blade, 15 ... Continuous dispersion device, 17 ... Mesh conveyor, 23 ...
... Sliding material tank, 24, 25, 26 ... Additive tank, 27 ... Slurry tank, 28 ...
...Cut gate, 33, 34, 36, 59...
...Quantitative supply device, 4154..., 49
...Blade, 50...Spiral body, 5
DESCRIPTION OF SYMBOLS 1...Shaft, 52...Mud constant supply device, 53...Liquid supply device, 55...Charging mechanism, 57...Belt feeder (Feeding device).

Claims (1)

[Scope of Claims] 1. A mud quantitative supply device having a discharge port at the bottom and supplying a fixed amount of mud from the discharge port using feeding blades arranged equiangularly and rotating horizontally, and receiving mud from the mud quantitative supply device. A concentration adjustment liquid supply device that adds liquid to mud to adjust its concentration; and a liquid from the concentration adjustment liquid supply device and mud from the mud quantitative supply device that are received at the base end of the trough and kneaded and stirred to the tip. a continuous dispersion device having a feeding blade and an agitating blade on a shaft along the culvert, and a continuous dispersion device having a feeding blade and a stirring blade on a shaft along the culvert; A mud slurry processing device characterized by comprising a mesh conveyor that can be returned to the soil. 2. A mud quantitative supply device having a discharge port at the bottom and supplying a fixed amount of mud from the discharge port using horizontally rotating feed blades provided in an equiangular radial pattern; A concentration adjusting liquid supply device for adjusting the concentration, and the liquid from the concentration adjusting liquid supply device and the mud from the mud quantitative supply device are received at the base end and kneaded and stirred to form a slurry and transferred to the tip. a continuous dispersion device having a feed blade and a stirring blade on one axis; a mesh conveyor capable of passing slurry-formed mud out of the mud discharged from the tip of the tube and returning solids to the base end of the tube; A tank for receiving the slurry mud flowing down from the mesh conveyor and at least one tank for separately storing various solidification admixtures, and a slurry slurry and various solidification admixtures from the tank in a predetermined ratio. a feeding device for feeding mud and solidification admixture received from the feeding device; a feeding device for feeding mud and solidification admixture; A mud slurry processing device characterized by comprising a continuous shaft mixer equipped with a mixing screw with a flexible bottom that can be pushed up against gravity.