JPS582559Y2 - Band press type dehydrator - Google Patents

Description

[Detailed description of the invention] The present invention relates to a band press type dewatering machine, and its purpose is to remove the upper band from the top side of the upper band at the end of the sludge dehydration area formed during the opposing travel path of a pair of upper and lower bands. The purpose is to prevent the water squeezed out from being drawn into the dehydrated cake through the band again and being splattered.

An embodiment of the present invention will be described below.

1 is an endless filter band, and 12 is an endless press milling band.

In each of these bands 1 and 2, a path 3f is formed in which each of the outgoing and returning paths of the filter band 1 and the outgoing path of the press milling band 2 are opposed to each other, and each band 1 and 2 runs facing each other. : is formed, and a sludge desorption area Z is formed in this opposite travel path 3.

That is, the filter band 1 has left and right end rolls 4 and 5.
The press trimming band 2 is wound between the end rolls 6 and 7 provided near the center of the forward path and near the end of the return path of the filter band 1, and the return path is wound between a plurality of intermediate rolls 8. It is designed to be guided by

At the end of the opposite running path 3, filter band rolls 9 and press rimming rolls 10 are arranged alternately in a staggered manner, and each band 1°2 is disposed between these rolls 9 and 10. It is wrapped in a meandering pattern.

Further, a leveling roll 11 is provided before the beginning of the relative amount path 3 so as to face the filter band 1.

Receiving tanks 12 and 13 are provided below the outgoing path and below the returning path of the filter band 1, respectively, and the upper receiving tank 12 and the lower receiving tank 13 are connected by a water conduit 14.

When the above button is pressed and the sludge A containing moisture is supplied to the beginning of the outgoing path of the filter band 1, this sludge A is sent to the opposite traveling path 3 side by the running of the filter band 1, and is smoothed by the leveling roller 11. After that, the relative strike path 3 is reached.

The sludge that has entered the opposite travel path 3 is transferred to the filter band 1.
and the press rimming band 2, and the path 3
The water is roughly squeezed in the first half of the
After being collected at 2, it passes through the water conduit 14 and enters the lower receiving tank 12.

After the rough squeezing, the sludge passes through the meandering path 15 at the end of the opposing travel path 3, and then passes through the filter band 1 and the press rimming, which are tensioned by the filter band roll 9 and the press rimming roll 10. band 2
It is held even more tightly by the and, and excess moisture is released.

The moisture at this time is received in the lower receiving tank 13.

The sludge dehydrated while passing through the meandering passage 15 exits the passage 15 and is discharged outside the machine as a dewatered cake B.

Further, the water collected in the lower receiving tank 13 is drained through a drainage channel 16.

As explained above, in the case of a band press type dewatering machine that dewaters sludge A containing water by sandwiching it between the filter band 1 and the press rimming band 2, it is necessary to There is also a drawback that water in the sludge A is squeezed out from the upper surface of the filter band 1, and this squeezed out water permeates the filter band 1 again and is drawn into the dewatered cake B.

Therefore, in order to dehydrate oil mud more effectively,
It is necessary to quickly remove the water squeezed out onto the upper surface of the filter band 1 to the outside of the filter hand 1.

Therefore, in this embodiment, an endless running body 17 having a water-absorbing sponge-like substance disposed on the surface is used for the meandering path 15.
The filter band 1 is pressed against the upper surface of the filter band 1 near the final press rimming roll 10, and the water squeezed out on the upper surface of the filter band 1 is absorbed into the endless running body 17 side. I try to do that.

Particularly in this embodiment, one of the end rolls 18 and 19 around which the endless running body 17 is wound is pressed against the final press □ ring roll 10, thereby removing the moisture in the sludge A. Since the end roll 18 and the final press-milling roll 10 are used to forcibly squeeze out the water, the dehydration effect is greatly improved, and the water once squeezed out is drawn into the dehydrated cake B again. It is possible to reliably prevent this from occurring.

On the other hand, the endless running body 17 is dewatered by the cooperation of the above-mentioned end roll 19 and a dewatering roll 20 provided opposite to the other end roll 19 in the running path.

The water thus dehydrated passes through the passage 21 into the lower receiving tank 13.
sent to.

The following table compares the sludge dewatering efficiency of the present invention, which is provided with a water-absorbing endless running body, and the conventional system, which is not provided with a water-absorbing endless running body.

As described above, according to the present invention, the water content of the dehydrated cake B can be greatly reduced compared to the conventional cake, and the dewatering efficiency can be improved.

According to the present invention, the water squeezed out to the upper surface of the upper bund at the end of the sludge dehydration zone is quickly absorbed and removed by the endless running body provided in contact with the upper surface of the upper band, so that the water is squeezed out. It is possible to completely prevent the removed water from being drawn into the dehydrated cake again.

Therefore, the dewatering efficiency of the band press type dehydrator can be improved.

[Brief explanation of the drawing]

The drawing is a schematic side view showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Filter band, 2... Press slimming hand, 3... Reciprocal running path, 17... Endless running body, 2... Sludge desorption area, A... Sludge, B... Dehydrated cake.

Claims (1)

[Scope of utility model registration request] A band press type dehydrator characterized in that a water-absorbing endless running body is brought into contact with the upper surface of the upper band at the end of a sludge dehydration zone formed in the opposing travel paths of a pair of upper and lower bands.