JPS6017207Y2 - Sludge dewatering equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a press dewatering machine such as a filter press for dewatering sludge or slurry generated from sewage or other industrial waste liquids.

In general, press dehydrators are known to have a large number of furnace plates covered with furnace cloth and pressure-filter sludge, but there is a limit to the dewatering speed, the processing capacity is small, and the water content of the dehydrated cake is also comparable. There are problems such as high standards.

The present invention attempts to improve these conventional problems.
Therefore, it is an object of the present invention to provide an apparatus that can significantly increase the dewatering speed compared to conventional press dehydrators and obtain a dehydrated cake with an extremely low water content.

In the present invention, a dehydration auxiliary plate having an ultrasonic vibrator is disposed in the barrel chamber of a compression dehydrator, and an outflow channel for furnace liquid is provided on the surface of the dehydration auxiliary plate that faces the sludge. This is a sludge dewatering device.

The present invention can be applied to any type of press dehydrator, and a specific example is filter plate 1.
There are various types such as

Therefore, in the following explanation, a filter press will be used as an example.

An embodiment of the present invention will be explained with reference to the drawings. Figures 1 and 2 are front views of a filter press 1 to which the present invention is applied, and the first illustrated example is a combination of an upper end plate 1 and a lower end plate 2. A plurality of furnace plates 3 are arranged between the upper end plate 1, each furnace plate 3, and the lower end plate 2.
This is a vertical filter press in which a furnace cloth 4 is provided in between so as to run endlessly on rolls 5.

The furnace cloth 4 is endless and hung on a movable pulley 21 and a fixed pulley 22, and runs in a zigzag pattern on the furnace plates 3 arranged in multiple stages. The lower end plate 2 is designed to be able to press the cake on the oven cloth 4 by a pressure drive mechanism 24.

In the second illustrated example, a plurality of furnace plates 3 supported by side pars 8 so as to be movable back and forth are arranged between a movable head 6 and a fixed head 7, and a furnace cloth 4 (not shown) is provided between each furnace plate 3. This is a horizontal filter press with one or two sheets of filter press.

In addition, in Fig. 2, 25 is a frame, 26 is a stock solution inlet, and 2
7 is a furnace liquid outlet, 28 is a gear, 29 is a node wheel, and 30 is a moving wheel.

Now, in the embodiment described above, a specific example of the structure inside the furnace chamber 9 formed by the furnace plate 3 is as shown in FIGS. 3 and 4.

In FIG. 3, a dewatering auxiliary plate 10 having an ultrasonic vibrator 11 is installed in a furnace chamber 9 formed by furnace plates 3 and 3'.

That is, a furnace chamber 9 is formed by two single furnace plates 3, 3', two furnace cloths 4, 4' are stretched inside the furnace chamber 9, and the furnace chamber 9 is located on the sludge supply side. 12 and furnace liquid discharge side 13, 13'
It is divided into.

A dehydration auxiliary plate 10 having an ultrasonic vibrator 11 connected to an ultrasonic oscillator (not shown) is disposed on the furnace liquid discharge side 13'. A water passage hole 18 is provided on the surface of the dehydration auxiliary plate 10 on the furnace cloth 4' side as a flow path for the furnace liquid.

Furthermore, a sludge supply port 14 and furnace liquid ports 15, 15' are provided in the upper and lower portions of the furnace chamber 9, respectively.

On the other hand, on the side shown in FIG. 4, a diaphragm 16 is further installed inside the furnace chamber 9.

That is, a diaphragm 16 is provided on the furnace liquid discharge side 13, and a dehydration auxiliary plate 10 similar to the third illustrated example is provided on the furnace liquid discharge side 13', and the diaphragm 16 is provided with an inlet for high pressure gas or pressure water. 17 are provided.

The rest is the same as the third illustrated example.

In the above embodiments, a single type is shown, but a double type can also be applied.

Furthermore, although the reactor fluid outflow channel is the water passage hole 18, it may also be a groove-shaped channel, that is, a water passage groove.

In the case of the fourth illustrated example, the slurry is press-fitted from the slurry supply port 14 into the slurry supply side 12 in the furnace chamber 9 and is filtered and dehydrated, and the furnace liquid is passed through the furnace cloths 4 and 4. ' through the furnace liquid inlet 15.
15' to the outside of the system.

Next, as the filtration and dehydration progresses, the filtration rate decreases, and when a certain filtration pressure is reached, the slurry supply port 14 is closed, and high pressure gas or pressure water is introduced from the inlet 17 to the diaphragm 1.
6 is expanded and deformed and pushed to the slurry supply side 12, and further compressed and dehydrated to minimize moisture in the cake.

During this filtration dehydration and compression dehydration process, the ultrasonic vibrator 11 applies an appropriate frequency (preferably 1 kHz to I) to the slurry.
When ultrasonic vibrations (MHz) are applied, the energy makes it easier to separate water, resulting in a dehydrated cake with an extremely low water content.

Note that the output of the ultrasonic vibration may be appropriately set depending on the properties of the slurry, and the larger the output, the more effective it is.

Note that the ultrasonic vibrator 11 can be appropriately used such as a magnetostrictive vibrator, a piezoelectric vibrator, an electrostrictive vibrator, etc., and may have any shape.

Further, a horn may be attached to the ultrasonic vibrator 11, and vibrations may be applied from the horn.

In the present invention, the dehydration auxiliary plate 10 provided with the ultrasonic vibrator 11 may be rotated 900 times compared to the case of the above embodiment.

Further, the dehydration auxiliary plate 10 may be provided on both sides of the furnace cloths 4, 4' (in the third illustrated example, it is also provided on the furnace liquid discharge side 13).
This has the advantage of further improving the dehydration effect.

Further, the dehydration auxiliary plate 10 may be a single plate or may be configured by combining two or more plates.

That is, in the third illustrated example and the fourth illustrated example, the water passage hole 1
8 and the ultrasonic vibrator 11 are provided on the right side of the dehydration auxiliary plate 10, but they may be provided on both the left and right sides.

The ultrasonic vibrator 11 may be attached to the dehydration auxiliary plate 10 on the outside of the dehydration auxiliary plate 10, or alternatively, as in the above embodiment, the dehydration auxiliary plate 10 may be made hollow and placed inside the dehydration auxiliary plate 10. Alternatively, it may be attached to one end of the outside of the dehydration auxiliary plate 10.

As described above, according to the present invention, in a compression dehydrator, a dehydration auxiliary plate having an ultrasonic vibrator connected to an ultrasonic vibrator is disposed in the furnace chamber formed by the furnace plate, and
By providing a water passage hole or a water passage groove on the surface of the dehydration auxiliary plate facing the muddy material, ultrasonic vibration is applied to the filtration dehydration and compression dehydration actions, creating a synergistic effect and making it effective. It is possible to obtain a dehydrated cake with extremely low water content, the dewatering speed is also greatly improved, there is almost no clogging of the cloth, and stable dehydration processing is possible and the operation rate is good. It has advantages such as easy operation management.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 and 2 are front views of a filter press to which the present invention is applied, and FIGS. 3 and 4 are sectional views showing embodiments of the present invention, respectively. 3.3'... Furnace plate, 4,4'... Furnace cloth, 9... Furnace chamber, 10... Dehydration auxiliary plate,
11... Ultrasonic vibrator, 12... Sludge supply side, 13.13'... Furnace liquid discharge side, 14
...Sludge supply port, 15, 15'...
Furnace liquid inlet, 16...Diaphragm, 17...
...Inlet, 18...Water hole.

Claims (1)

[Claims for Utility Model Registration] 1. A dehydration auxiliary plate having an ultrasonic vibrator is disposed in the barrel chamber of the compressor dehydrator, and a furnace liquid is applied to the surface of the dehydration auxiliary plate that faces the sludge. A sludge dewatering device with an outflow channel. 2. The sludge dewatering device according to claim 1, wherein the dewatering auxiliary plate is a hollow body, and the ultrasonic vibrator is disposed inside the hollow body. 3. Claim 1 of the Utility Model Registration Claim, wherein the P chamber includes a diaphragm having an inlet for high-pressure gas or pressure water, and the expansion and deformation surface of the diaphragm is arranged to face the dehydration auxiliary plate. Sludge dewatering device according to item 2.