JPS5912153Y2 - Sludge treatment equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a sludge treatment device.

The sludge treatment device includes a cylinder having a water-containing sludge supply port at one end, a dehydrated sludge discharge port at the other end, and a large number of dehydration holes in the center, and a cylinder rotatably disposed within the cylinder. It is conceivable that a screw is provided to convey the sludge supplied into the cylinder from the supply port to the discharge port.

According to this device, the sludge compressed by the screw easily enters the dewatering hole, and the dewatering ability is reduced in a relatively short period of time.

Therefore, the present invention provides a sludge treatment device that solves these problems.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

1 is a cylinder having a water-containing sludge supply port 2 at the top of one end, a dehydrated sludge discharge port 3 at the other end, and a number of dehydration holes 4 in the center; 5 is rotatably disposed within the cylinder 1; A screw is provided to convey sludge from the supply port 2 to the discharge port 3 supplied into the cylinder 1, and includes a portion near the center of the small diameter portion 6a at the base end of the screw shaft 5a, a large diameter portion 6b at the center, and the tip. Medium diameter portion 6 between large diameter portion 6d
A plurality of sludge stirring rods 7 and 8 are provided protruding from C, respectively.

Reference numeral 9 denotes a drive unit with a speed reducer that rotates the screw shaft 5a, 10 a water-containing sludge charging hopper disposed above the supply port 2, 11 a gate disposed on the hopper 10, and 12 below the cylinder 1. This is a dehydration tray placed in the

Reference numeral 13 denotes a cylindrical chamber that is fitted onto the outside of the cylinder 1 and is moved back and forth along the longitudinal direction of the cylinder 1 in the directions of arrows A and B by a drive device (not shown). The tip of a hose 14 extending from a compressed air supply source (not shown) is connected to the supply pipe 13H.

Reference numeral 15 designates flexible seal members made of rubber or the like that are fixed to both side surfaces of the chamber 13 and abut against the outer peripheral surface of the cylinder 1.

The operation of the above structure will be explained.

First, before dewatering, the chamber 13 is placed at the imaginary line position in FIG.
The drive machine 9 is activated.

Then, the screw 5 rotates in one direction, and the water-containing sludge in the hopper 10 enters the cylinder 1 through the supply port 2, is pushed out in the direction of arrow A by the screw blade 5b, and is moved by the stirring bar 7 on the small diameter portion 6a at the base end. The sludge is stirred and mixed, compressed and dehydrated by the central large diameter portion 6b, stirred and mixed again by the stirring rod 8 of the medium diameter portion 6C, compressed and dehydrated again by the tip large diameter portion 6d, and the dehydrated sludge is discharged from the discharge port 3. It is something.

Then, when the water-containing sludge is compressed and dehydrated by the large diameter portions 6b and 6d at the center and tip, the water is discharged out of the cylinder 1 through the dehydration hole 4, falls onto the dehydration tray 12, and is drained. It is.

Next, when the dehydration holes 4 become clogged with sludge, the chambers 13 are moved in the direction of arrow A to correspond to each dehydration hole 4, and at the same time, the compressed air supply source is activated, and the hoses 14 and pipes 13 are Compressed air is sent into the chamber 13 through a, and the compressed air that has entered the chamber 13 enters the cylinder 1 through each dehydration hole 4,
The sludge clogged in each dehydration hole 4 is pushed back into the cylinder 1 to eliminate clogging of each dehydration hole 4.

In the above embodiment, the case where the screw 5 has a single shaft has been described as an example, but it goes without saying that it can also be applied to a case where the screw 5 has two shafts as shown in FIG.

As described above, according to the sludge treatment device of the present invention, even if the dehydration hole is clogged with sludge, it is possible to eliminate the clogging by forcing compressed air into the dehydration hole. In particular, the water-containing sludge that enters the cylinder from the supply port is pushed out by the screw blades, stirred and mixed by the stirring rod on the small diameter part of the base, compressed and dehydrated by the large diameter part in the center, and stirred again by the stirring rod in the middle diameter part. The mixture is mixed, compressed and dehydrated again by the large diameter portion at the tip, and discharged from the discharge port.

Therefore, the sludge can be efficiently and reliably dehydrated.

[Brief explanation of drawings]

FIGS. 1 and 2 show an embodiment of the present invention, with FIG. 1 being a longitudinal sectional view and FIG. 2 being a view taken along the line II--II in FIG. 1. FIG. 3 is a cross-sectional view showing another embodiment of the present invention. 1... Cylinder, 2... Water-containing sludge supply port, 3... Dehydrated sludge discharge port, 4...
・Dehydration hole, 5... Screw, 13...
chamber.

Claims (1)

[Scope of utility model registration request] A cylinder having a water-containing sludge supply port at one end, a dehydrated sludge discharge port at the other end, and a large number of dehydration holes in the center; In a sludge treatment device equipped with a screw that transports sludge supplied to a discharge port, the screw shaft is connected to a small diameter portion at the base, a large diameter portion at the center, a large diameter portion at the tip, and a large diameter portion at the tip and the center. A plurality of sludge stirring rods are provided protruding from the center of the small diameter portion at the proximal end and from the middle diameter portion, respectively, and are fitted externally into the cylinder and attached to the cylinder. The sludge is characterized by being provided with a chamber that can freely move back and forth along the longitudinal direction of the sludge, and a compressed air supply source that sends compressed air into the chamber to push back the sludge clogged in the dehydration hole into the cylinder. Processing equipment.