JPH02138007A - Dehydrating and pressurizing vertical belt conveyer - Google Patents

Abstract

PURPOSE:To intend to improve workability while saving space by forming the device in the title for such as digged earth generated in underground construction work and the like with filter cloth belts sandwiching and carrying articles to be carried and dehydrating and pressurizing rollers arranged at their perpendicularly moving parts. CONSTITUTION:A device is formed with two sheets of filter cloth belts 2 and dehydrating and pressurizing rollers 3 arranged at vertically moving parts, earth 1 is placed on a lower belt 2a at a carrying in part A, and carried on while being sandwiched between the upper and lower belts 2a, 2b. And it is passed between dehydrating and pressurizing rollers 3 in the process of being carried vertically upward on vertically moving part, and pressurized and dehydrated. The upper and lower belts 2a, 2b are separated from each other before a carrying out part B and the dehydrated earth 1 is carried out to the carrying out part B with the lower belt 2a. Accordingly to this constitution, workability can be improved while saving space.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to a dewatering pressurized vertical belt conveyor apparatus. More specifically, this invention is applicable to underground construction,
This invention relates to a dewatering and pressurizing vertical belt conveyor device that can continuously dewater and convey vertically, in a space-saving manner, earth and sand such as excavated soil and residual soil generated from river construction, etc., and their fine granular materials in a space-saving manner.

(Conventional technology and its issues) Conventionally, excavated soil and residual soil generated at construction sites, etc., have generally been dehydrated before being transported from the site due to transportation and post-processing considerations. It is being said.

These dehydration processes include dehydration using gravity or vibration, belt press dehydration using pressure using a filter cloth belt,
It is also used as a method such as drum press dehydration.

However, all of these conventional dewatering processes were developed for work sites where there is a relatively large degree of freedom in work spaces, such as horizontal areas or slightly sloped areas.In recent years, shield construction methods have been attracting particular attention. It is not suitable for dewatering at underground construction sites or for transportation.

Until now, earth and sand generated from underground construction work has been handled by (a) pressure conveyance using pipes, (b) lifting using clamshells, baguettes, etc., or vertical conveyors such as tray lifters, depending on the excavation method and condition of the excavated soil. The method used to convey vertically to the ground, but in the case of earth and sand containing a large amount of moisture, the load involved in such transportation was large, and both work efficiency and economic efficiency were not good.

In order to overcome these problems, it is possible to dewater the earth and sand at the underground site or in the underground space nearby, but in reality, it is difficult to dewater the earth and sand in narrow tunnels or vertical shafts during shield construction etc. This was not desirable because it was quite unreasonable in terms of space and processing capacity of conventional equipment and devices.

Therefore, in view of these circumstances, the present invention is intended to be implemented as a device that is economical and has good workability even in spaces where space is severely restricted such as shafts for shield construction or underground work sites. The purpose is to provide a new means for dewatering and transport that can be carried out.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention includes opposing warm cloth belts that sandwich objects to be conveyed and dehydrate them and convey them vertically;
A dewatering and pressurizing vertical belt conveyor device is provided, characterized in that it has a dehydrating pressurizing roller disposed in a vertically moving portion of the belt.

(Function) In the belt conveyor device of the present invention, a filter cloth belt is used to convey earth and sand vertically in a shaft, etc., and the earth and sand are sandwiched and pressurized in this filter cloth belt, so that the earth and sand are conveyed vertically and dewatered at the same time. becomes possible. Moreover, by providing the dewatering pressure roller, this dewatering can be carried out more effectively.

Therefore, water can be dewatered even in a vertical shaft or the like in a narrow space, and since dewatering can be performed only within the shaft or the like, wastewater treatment is facilitated, and noise treatment is also facilitated.

(Example) Hereinafter, an example of the belt conveyor device of the present invention will be described along with the drawings.

FIG. 1 is a sectional view of a device inside a shaft site showing an example of the present invention.

For example, the device of the present invention can be installed in a shaft that can be 60 meters or more in length, and achieves excellent effects.As illustrated in FIG. Two opposing filter cloth belts (2)
and a dewatering pressure roller (3) disposed on the vertically moving portion of the filter cloth belt (2).

As in this example, a plurality of pairs of dewatering pressure rollers (3) can be provided in the vertically moving section. The filter cloth belt (2
) The number of dewatering pressure rollers (3) to be provided may be determined as appropriate, taking into consideration the length of the vertically moving portion of the rollers (3).

Earth and sand (1), such as excavated soil containing water, is placed on the lower belt (2a) at the loading section (A), and is vertically moved upward through the vertical movement section while being sandwiched between the upper belts (2b). transported. In this process, the sediment (1) is removed by this filter cloth belt (2) and by the dewatering pressure roller (3).
It will be dehydrated under pressure.

After the lower belt (2a) and upper belt (2b) are separated, the dewatered earth and sand (1) is conveyed to a predetermined unloading section (B) by the lower belt (2a) on the ground. At this time, the dewatering rate of the earth and sand can be increased to around 80%.

Therefore, the cost of disposing of the remaining soil later using dump trucks, etc. is 50% lower than that of soil containing water.
% or less.

Of course, the shape of the installation of the cloth belt (2), including the arrangement of the feed roller (4), can be made to any appropriate specifications depending on the length, or depth, and size of the shaft. Nor.

For example, if the shaft is used at a site with different depths, belt play (h) should be provided at an appropriate location in the vertically moving part of the filter cloth belt (2), as shown in Figure 2. This can be easily dealt with.

Furthermore, if dirt remains attached to the return belt, it will fall off on the rollers while the vehicle is running, making cleaning difficult. In particular, dirt tends to adhere to the filter cloth belt (2).

For this purpose, as shown in FIG.
It is also effective to install a

FIG. 3 illustrates a cross section of the vertically moving portion of the filter cloth belt (2). Water-containing soil (1) is removed by a filter cloth belt (2) and then dehydrated by a pressure roller (3).
The material is pressed down and conveyed vertically while being dehydrated. FIG. 4 shows a cross section taken along the line a-a in FIG. 3. The earth and sand (1) is pressed and dewatered by dewatering pressure rollers (3) on both sides. At this time, spillage prevention rollers (5) are placed in contact with both open edges of the filter cloth belt (2) to prevent the soil (1) from spilling during dewatering and conveyance, and both edges are sealed. do it like this. As an alternative to this spillage prevention roller (5), a continuous slit guide may be placed in contact with it.

The pressing force of the dewatering pressure roller (3) may be adjusted using an elastic body such as a spring (6). In general, the dewatering effect will be improved if the mutual distance (j) of the dewatering pressure rollers (3) is such that the pressing force thereof gradually increases as the position increases above the vertically moving portion of the belt.

In addition, if there is debris mixed into the conveyed object, there is a risk of damaging the Sawafu belt (2) when pressurizing it with the dehydration pressure roller (3), but by installing springs (6), etc. It is also possible to create an escape to prevent this.

The dewatering pressure roller (3) may be, for example, a porous press roller that has many drainage holes on its surface and drainage grooves inside, or it may be a porous press roller that has water absorption and water retention properties. In this latter case, for example, as shown in FIG. A pressure roller (8) for roller dewatering is arranged, and the water from the Sawafu belt (2) is first passed through the water absorbing roller (
7), then apply pressure roller for roller dehydration (8)
This water (9) may be removed by applying pressure.

In addition, in order to reduce the water weight load due to dehydration in the vertically moving section, dewatering may be performed intensively below this vertically moving section, or as shown in Fig. 6, a filter may be used. In the middle of the vertical movement part of the cloth belt (2) and/or
A horizontal dewatering section (C) may be provided just before the mana, and means such as vibration dehydration or belt pre-rel dehydration (10) may be employed.

These can be selected depending on the size of the shaft and dewatering capacity.

There are various kinds of filter cloth belts that can be used in this invention, but preferable ones are those in which the short fibers on the surface of the filter cloth belt are oriented at an angle in the conveying direction, and those in which both side edges are Examples include those reinforced with airtight rubber or steel-filled rubber.

Naturally, the present invention is not limited to the above examples. Furthermore, regarding the wastewater treatment system, belt drive system, control system, etc., previously known systems or improved systems thereof may be adopted. It goes without saying that it can be done.

(Effects of the Invention) As described in detail above, the present invention makes it possible to transport earth and sand generated from underground construction sites such as shield construction to the surface with high efficiency while dewatering the earth and sand in a shaft.

Excellent effects such as space saving effect and continuity have also been realized.
A dewatering and conveying device with extremely good economic efficiency and workability is provided.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an apparatus showing an example of the present invention. FIG. 2 is a sectional view showing another example. FIGS. 3 and 4 are sectional views of essential parts showing the vertically moving portion of the sawcloth belt. FIG. 5 is a sectional view of a main part showing another example of the vertically moving part of the filter cloth belt. FIG. 6 is a sectional view showing yet another example of the invention. 1... Soil, sand 2... Filter cloth belt 3... Dewatering pressure roller 4... Feed roller 5... Load spill prevention roller 6... Spring 7... Water absorbing roller 8. ... Roller dehydration Pressure roller 9 ... Water 10 ... Belt press dehydration

Claims (10)

[Claims] (1) A dewatering and pressurizing vertical belt conveyor device characterized by having opposing filter cloth belts that sandwich objects to be conveyed and dehydrate and vertically convey them, and a dehydrating pressurizing roller disposed in a vertically moving portion of the belts. . (2) The dewatering press vertical belt conveyor device according to claim 1, wherein a plurality of pairs of dehydrating pressure rollers are provided. (3) The dewatering press vertical belt conveyor apparatus according to claim 1, wherein the dewatering press roller is a perforated press roller having surface drainage holes and internal drainage grooves. (4) The dewatering and pressurizing vertical belt conveyor apparatus according to claim (1), further comprising a dehydrating pressurizing roller group consisting of a water-absorbing pressurizing roller and a roller dehydrating pressurizing roller. (5) The dewatering and pressurizing vertical belt conveyor apparatus according to claim (1), wherein the dewatering is performed in a concentrated manner below the vertical movement of the belt. (6) The dewatering and pressurizing vertical belt conveyor apparatus according to claim (1), further comprising a horizontal dewatering section in the middle and/or immediately before the vertically moving section of the belt. (7) Claim (6) providing a vibration and belt press dewatering section
Dewatering pressurized vertical belt conveyor equipment as described. (8) The dewatering and pressurizing vertical belt conveyor device according to claim (1), wherein the short fibers on the surface of the filter cloth belt are oriented obliquely in the conveying direction. (9) The dewatering and pressurizing vertical belt conveyor device according to claim (1), wherein both edges of the filter cloth belt are made of non-stretchable sealing reinforcing material. (10) The dewatering and pressurizing vertical belt conveyor device according to claim (1), wherein rollers for preventing spillage are disposed opposite both side edges of the filter cloth belt.