JPS5835284Y2 - A separate supply tank for filtration stock solution installed in connection with the filtration raw material supply port of the dehydrator. - Google Patents

Description

[Detailed explanation of the invention] Conventionally, when dewatering undiluted sludge using a dehydrator, for example, a polymer flocculant was added to thickened sludge (coagulated sediment). The change is significant,
It was not possible to increase the concentration sufficiently.

As a result, the capacity of the dehydrator could not be fully utilized.

In addition, since various solid contaminants (metal pieces, glass pieces, plastic pieces, and other miscellaneous solid substances) are mixed in the sludge, these contaminants are fed into the dehydrator, damaging the dehydrator and damaging the filter cloth. Many things like damage occur.

This project aims to increase the concentration of the stock solution, which is the drawback mentioned above,
In order to make full use of the improved capacity of the dehydrator, it is possible to remove solid impurities mixed in the sludge before dehydration, and the separation is made to smooth the flow of the stock solution through the tank to improve the dehydration effect in the stock solution. The purpose of this invention is to sufficiently increase the performance of the invention with a simple configuration.

In other words, the present invention divides the inside of the filtration stock solution division tank into upper and lower stages at predetermined intervals using partition plates with a ■-shaped cross section, and connects each stock solution receiving chamber at alternate ends. A classification of filtration stock solution that is to be installed in connection with the filtration raw material supply port of a dehydrator, which has an escape port for the supernatant liquid on the terminal side wall and a draw port for the thickened sludge at the lower end or bottom of the circumferential side of the tank. is the supply tank.

The present invention will be explained below with reference to drawings of embodiments.

In the drawings, a denotes a tank for the filtration stock solution, 1 and 2 the peripheral side walls of the filtration stock solution tank, and 3 the bottom wall.

4, 5.6 are partition plates with a ■-shaped cross section that are stacked in stages at predetermined intervals in the tank a, thereby creating stock solution receiving chambers 7, 8, 9, 10, etc. in the tank in stages. was configured.

Parts of the partition plates 4, 5, 6, etc. with the above-mentioned ■-shaped cross sections are cut out alternately, and this is used as the outlet 1 of each stock solution receiving chamber 7, 8゜9, etc.
1, 12, and 13, the above-mentioned receiving rooms were to be communicated with each other.

In addition, the above-mentioned partition plate is a flat plate bent in the shape of ■ shape A as shown in Figures 4 and 5, one bent into an uneven shape like a rectangular gutter-like opening as shown in Figures 1 and 2, and the one shown in Figure 3. It is convenient to use various shapes such as those bent in a wavy manner.

In the above division, tank a may be square as shown in Figure 1,
Alternatively, as shown in Fig. 4, it may be opened upward, with a funnel-shaped bottom d, and a thickened sludge extraction port 19 may be attached thereto.

Next, 14, 15, 16, etc. are dehydration pipes for the supernatant liquid accumulated in the stock solution receiving chambers 8 and 9. is attached to the tank peripheral wall at the upper left end of the lowermost raw solution receiving chamber 10.

Further, a dewatering pipe 15 is attached to the tank peripheral wall 1 at the upper right end of the intermediate stock solution receiving chamber 9, and is intended to dehydrate the supernatant liquid accumulated in the stock solution receiving chamber 9.

An adjustment spring 17 is attached to each dewatering pipe 14, 15, 16 to adjust the amount of supernatant liquid to be dehydrated.

In addition, 18 is an introduction pipe for feeding the filtration stock solution into tank a.
It is arranged opposite to the upper surface of the raw solution receiving chamber 7 at the top.

Reference numeral 19 denotes a drain port for concentrated sludge liquid attached to the lower end of the peripheral wall of tank a, which was intended to be introduced into the raw liquid supply port 20 of dehydrator b (FIG. 5).

The above-mentioned dehydrator is a known one, and the compression cylinder 21 is equipped with a compressor cylinder 21.
This rotation compresses the concentrated sludge fed into the supply port 20, squeezes out water from the squeeze holes 23 around the compression cylinder 21, and transfers the sludge 24 from the end of the screw to the discharge port 25. You can drop it inside and take it out.

The present invention is constructed as described above, and its effects will now be explained.

The filtration stock solution can be divided by any method of putting the sludge stock solution into the tank a, but for example, as shown in the figure, the stock solution can be put into the stock solution receiving chamber 7 at the top of the tank a through the introduction pipe 18, and a polymer flocculant is added thereto. The sludge is collected in the receiving chamber while being aggregated into particles.

However, since the receiving chamber is divided by the partition plate 4 having a V-shaped cross section, the sludge that has flowed in forms a large number of granular aggregates 26 and accumulates in the separated water in a mixed state.

As the receiving chamber 7 is filled, it begins to overflow from the outlet 11 at the right end of the ■-shaped partition plate 4 of the railway car.
The internal granular aggregates 26 together with the separated water smoothly flow on the V-shaped partition plate towards the outlet 11 side, and flow into the right side of the stock solution receiving chamber 8 at the lower part of this, so that it is filled here. Become.

In such a case, since the granular aggregates are heavier than the separated water, they float to the bottom of the stock solution receiving chamber 8, accumulate together with the separated water, and gradually fill the receiving chamber.

Then, the supernatant liquid comes to flow out from the dehydration pipe 14 at the upper end of the left side wall of the receiving chamber, and the separated water and granular aggregates on the side of the partition plate 5 at the bottom flow into the next stock solution receiving chamber 9 through the flow outlet 12. Similar to the above, separated water and granular aggregates are mixed together and accumulate in the tank, and the supernatant liquid flows out of the tank from the dewatering pipe 17 on the right side wall of the receiving chamber 9 and drains the separated water on the bottom partition plate 6. The granular aggregates enter the lowermost raw solution receiving chamber 10 from the right flow outlet 13, and as the water content gradually decreases and the granular aggregates increase, this section is fully drained while allowing the sludge concentrate to flow smoothly in the supply tank. The sludge is concentrated and flows out from the outlet 19 at the bottom of the tank peripheral wall, and the granular aggregates and sludge are mixed together and flow into the raw material supply port 20 of the dehydrator.

In addition, in the present invention, the inside of the tank a is divided into stages using partition plates with a V-shaped cross section, so that the solid sludge mixed with the undiluted sludge on the bottom partition plate of the raw material receiving chamber 7 at the top can be removed. As shown in Figure 1, C will be pushed and accumulated near the V-shaped intersection, so it can be carefully picked out or scooped up at the appropriate time, so that it can be mixed with the sludge and dehydrated. This can be handled without flowing into the aircraft.

Before directly putting the stock solution to be dehydrated into the dehydrator as described above, the stock solution of the present invention is divided through the supply tank to perform the dehydration operation, so that the stock solution first passes through the graded stock solution receiving chamber in the supply tank a. The undiluted solution accumulates in the lowest liquid receiving chamber and is then poured into the raw material supply port of the dehydrator.The undiluted sludge to be dehydrated is separated by the partition plate with the ■-shaped cross section of the present invention before being directly put into the dehydrator. The liquid flows sequentially through each of the stock solution receiving chambers that are divided into stages.

Therefore, the sludge stock solution flows extremely smoothly on the bottom of the stock solution receiving chamber with the bottom of the ■-shaped partition plate, and the supernatant liquid flows out of the tank one after another, and is transferred to the dehydrator as a sufficiently concentrated sludge stock solution. It is possible to fully contribute to improving the capacity of the dewatering machine, which is the purpose of this application, and it is possible to remove impurities mixed in the sludge before dewatering the machine. The flow effect of the stock solution in the stock solution receiving chamber has the advantage that it can be extremely smoothly concentrated and supplied to the dehydrator by a simple configuration in which partition plates with V-shaped cross sections are installed in stages.

[Brief explanation of the drawing]

The drawings show one embodiment of the supply tank for the division of the filtration stock solution of this proposal, and Fig. 1 is a longitudinal cross-sectional view thereof, and Fig. 2 is Fig. 1 A.
-A cross-sectional view taken along line A and seen in the direction of the arrow; Figure 3 is a partial cross-sectional view of the partition plate with a wavy uneven surface; Figure 4 is a longitudinal cross-sectional view showing one modification of the tank; Figure 5 is a vertical sectional view of the device installed in relation to the dehydrator. a... The filtration stock solution is divided into supply tank, 1, 2,
...Peripheral wall of supply tank, 4,5...■-shaped cross section partition plate, 7,8゜9...Standard solution receiving chamber, 11
, 12.13... Outflow port of stock solution receiving chamber, 14.1
5.16... Dewatering pipe, 19... Thickened sludge extraction port.

Claims (1)

[Scope of utility model registration request] The filtration stock solution is divided into supply tank a by V-shaped cross section or deformed V.
The stock solution receiving chambers 7.8, 9.10 are divided into upper and lower two-stage lids or tops at predetermined intervals by cross-sectional partition plates 4, 5.6, etc.
etc., and cut out one end of each partition board alternately,
This cutout is used as the outlet 11, 12, 13 of each stock solution receiving chamber, and dewatering pipes 14, 15, 16 for the supernatant liquid accumulated in each stock solution receiving chamber are provided on the tank wall facing the outlet. A thickened sludge extraction port 19 is provided at the lower end or bottom of the circumference,
The filtration stock solution section that should be installed in conjunction with the filtration raw material supply port of the dehydrator is the supply tank.