JPS6017681A - Dehydrating drier for muddy material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a method for removing muddy materials such as sewage sludge from streams (at a low cost per month).
1 (2) Water, slurry that can be dried 1112 Relates to water drying equipment.

The development of sewage systems in recent years has been remarkable, and they are gradually spreading from large cities to small cities, and from small cities to towns and villages.

Most of the current sewage equipment, such as dewatering and drying equipment for sewage sludge, was developed for heavy use and is large in scale. Furthermore, fII2 watering and drying of muddy materials is a laborious process due to its nature, and in order to achieve a high 11 hit rate, it is necessary to use a large, high-grade (unfortunately) facility, which requires huge equipment costs, operation costs, and maintenance costs. As it became more popular, it required skilled workers and engineers.

However, in the case of sewage facilities required by small cities and towns, small-scale C ``low cost and no need for skilled workers and engineers are required, and the above-mentioned sewage facilities are not suitable for small cities and towns. Currently, there is no sewer R211fl+ suitable for these requirements.

The present invention was made in view of the current situation, and Bell 1
- Dehydration and drying tables are stacked three-dimensionally and the number of stages is increased to provide sufficient action area and time, dehydration is performed by m-force dehydration, and drying is performed mainly by air drying using countercurrent air, resulting in a simple structure. The object of the present invention is to provide a sludge dewatering and drying device that has low operating costs and can be operated unmanned.

Examples of the present invention will be described below with reference to the drawings.HH+7. I will explain it in detail.

Person 41" (Sludge supply pipe 2 is installed at the top of corner l1fq1,
Immediately below the f'7 mud 1 bar supply pipe 2 is an Il++ water table 3,
Furthermore, there is a drying table 4 (4a...III) on the other side.
('J, a discharge conveyor 5 is installed at the bottom of the human-shaped square tank 1.
Established 4J.

The 11;1 water lap 3 has drive rolls 6°6 at both ends.
Endless l1t2 water belt 7 with the required mesh
The side of the water belt 7 is supported by guide rollers 8 so that it is horizontal, and the guide [l-ra 9 is supported by the guide roller 8 to prevent the lower side from drooping. The dewatering bells 1 to 7 are driven by the guide 6 in a direction opposite to the 111 direction.
1-A water tray 111110 is placed on the 1Z side of La 8, 19(],
The water receptacle 111110 ”C: The received sewage is placed on an external stage (
J et al. () to a sewage treatment facility (not shown).

Move the form 11 up and down in the direction of 1j (2 water table 3).
The lower part of the formwork is installed in the lower part of the C dewatering belt 7 so as to be in close contact with the upper surface of the dewatering belt 7 so that sludge water can be stored in the formwork 11.
t2 Dehydrate compressed air to the required location on water table 3.
Air jets that blow out from the inside of 7 to the outside]・Scrubber 1
2 will be provided.

The drying table 4 (4a...4g> has endless bells 1 to 14 wound around drive rolls 13 and 13, respectively, and endless bells 1 to 14 on guides 1 to 15 and 16.
The endless bells 1 to 14 are configured to run in the opposite direction to the upper table (both the dewatering table and the drying table are shown).
Each drying table 4 (4a...4g>) is alternately shifted in the horizontal direction with respect to the upper table.

A partition plate 17 is provided between the DI2I2-blue 3 and the top drying table 4a, and the left drive roll (roll on the side where the belt changes direction downward) 6 of the n12 water table 3 is installed.
A humanoid square tank 1. A guide plate 18 is installed on the side wall.
The guide plate 18 constitutes a kite plate 19 and a C chute 20, which are installed at the end of the cutting plate 17.

Further, a power board 18 is installed on each side of the drying dagel 4 at each stage, facing the drive roll 13 on the direction changing side.

An air supply 1' 21 is installed on the side wall of the human-shaped square tank 1, below the lowest drying bubble 4g, and an air IJI outlet 22 is installed on the upper part of the side wall of the human-shaped square tank 1. 21, L:
``At the air supply fan, below the air 1 no 1 outlet 22;
A deodorizing device (both not shown in the figure) is connected to A, and air is always supplied from the air supply 1121 to the shuttle.

Next, the drying process in the apparatus described in 1-1 will be explained.

n (2 water j - sol 3, dry = 7 = sol 4 is all 1 u II
Lower the form 11 in the - state and supply sludge? Sludge water is supplied into the form 11 from 22.

This sludge water is supplied once a day for 1
i2 Water Havre 3 and Dry Lanol 4 are driven once a day (
Take Jicle.

The water content of sludge water is higher than gravity. The water passes through the water bell 1-7, is collected in the water tray 10 directly below it, and is fed to an external sewage treatment device.

The next day, the frame 11 is pulled up, the L Asialer 1 Hescrubber 12 is moved, and the water table 3, dry table 4a...4g, and publication conveyor 5 are driven and covered all at once.

The dehydrated Pj mud falls sequentially from the shoes 1 to 20 as the till water pels 1 to 7 run, and is transferred to the dry rubble 4 in the lower stage.
It can be transferred to a. This l18711i2 water bell 1-7
By matching the running speeds of the dowels 1 to 14, the transfer is averaged, and the effect of turning over and breaking down the sludge automatically occurs when it falls to the daple 4a at the bottom of the sludge.

The sludge has been transferred to the lower level η Drying table 4
a...4, the discharge conveyor 5 stops all at once 1, the dewatering table 3 runs several times after the drying 7--nols 4a...4g stop, and during this running the dewatering bell 1 ~7
Is the clogging caused by Air Sea Lts 1 to Scrubber 12?
be converted into

When the dewatering table 3 stops, the form 11 is lowered again and sludge water is supplied from the sludge supply chamber 2 and stored in the form 11.
One culm of 11 noikuru is completed in a day.

1! By repeating the culm, the sludge is sequentially transferred to the lower drying table 4, and at each transfer, a reversal and cutting effect occurs, and the sludge that has reached the lowest stage is discharged onto the conveyor 5'c.
It is discharged into an external hopper, etc.

Further, the air supplied through the air supply port 21J hits the guide plate 18 provided for each drying table 4a...4g, changes direction, flows against the flow of sludge, and finally The air is discharged from the air outlet 22.

The flow path that regulates the flow of air is constituted by the drying tables 4a...4g, the guide plate 18, the partition plate 11, and the dewatering table 3.

Due to the transfer of the sludge to the lower stage by each table and the flow of air, the sludge dries until it reaches the lower stage, and by the time of discharge, it has been air-dried for a full 2 minutes. or,
The amount of air to be supplied is preferably such that the water content is close to the saturated state (=I) when the air leaves the air IJI + Jt II 22 from an economic standpoint.

Incidentally, FIG. 2 shows another embodiment, and corresponds to the view taken along the arrow Δ-A in FIG.

In the embodiment shown in Fig. 1, the drying air is flowed completely in the opposite direction to the sludge running, but in the embodiment shown in Fig. 2C, it is flowed across the sludge running at right angles. ,
In this case as well, the flow flows from the lower stage to the upper stage, and the flow is also counter-current.

In FIGS. 1 and 2, 23 is the running direction of the sludge, and 24 is the air flow direction.

In addition, although the above embodiment was explained using 1E11 cycles, it is of course possible to use 2 or more cycles.
The number of stages of the t2 water table and the number of stages of the drying table are not limited to those in the above embodiment.

Further, the drying table may be operated continuously at a very slow speed at one stage per day, or the speed of each drying dauffle may be relatively changed.

Furthermore, depending on the properties of the sludge, a frame may not be necessary.

As stated above, the present invention has the following advantages: (1) It can be operated by a simple switch operation about once a day, and no special technology is required. 0. Since it is a short-term drive, it requires extremely little energy and has a long life. (f) The structure is simple, so it is inexpensive. (v). Since it is used, it has various excellent effects such as requiring less installation space.

[Brief explanation of the drawing]

FIG. 1 is a schematic vertical cross-sectional view of the 7II embodiment of the present invention as seen from the front, and FIG. 2 is a schematic vertical cross-sectional view of another embodiment of the same as seen from the side. 1 is a dog-shaped square tank, 2 is a sludge supply tube, 3 is an N12 water table, 4 is a drying "7-' full, 18 is a sword id temporary, and 24 is an air flow. Figure 1 Figure 2 414

Claims (1)

[Claims] 1) An endless 1112 water belt that can run is stretched horizontally just below the slurry supply installed at the top of the square tank, and a water receiving part is installed below the 11;2 water belt. Install a dewatering table with a drying table, and purchase the required number of drying tables equipped with endless belts that can run in the opposite direction to the upper table below the dewatering table, and drying air is supplied sequentially from the bottom of each table. A sludge dehydrating and drying device characterized by forming an air passage so that the air flows counter-currently to the civilians.