JPH072157Y2 - Sludge distribution device for belt press dehydrator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a belt press dehydrator used in a sewage treatment plant for dehydrating flocked sludge by pressing it between two filter cloths, particularly It relates to a sludge distributor that supplies sludge to a dehydrator.

[Prior Art] Generally, in a belt press dewatering machine, sludge is uniformly and evenly supplied to the entire surface of the filter cloth in order to effectively use the entire surface of the filter cloth to improve dewatering efficiency and to prevent wrinkles and damage of the filter cloth. A sludge distribution device is installed.

As the sludge distributor, for example, as shown in FIG. 8, a U-shaped trough 3 is arranged in the width direction of the filter cloth 2 on the front surface of the sludge inlet 1, and a variable speed reducer is provided on the tip side of the trough 3. It is known that the paddle 4 which is rotated by an electric motor is pivotally supported. In the apparatus, sludge that has been flocculated and flocculated in a coagulation / mixing tank is charged into the trough 3 from the charging port 1,
The rotating paddle 4 supplies sludge onto the filter cloth, and since a sludge moving water gradient occurs in the flow direction of the trough 3, the slidable structure is set up and down on one side of the entire device, and the inclination angle is set. It is possible to make the sludge flow out evenly.

[Problems to be Solved by the Invention] However, the conventional apparatus has the following problems and is desired to be improved.

The production cost is high.

It is necessary to adjust the tilt angle and the number of rotations of the paddle according to the change in the treatment amount (sludge flow rate), which is not convenient.

Power is required to rotate the paddle, which complicates the structure and takes up additional space.

The rotation of the paddle may destroy the flocs and reduce the dehydration efficiency.

After the sludge supply operation is completed, sludge remains in the trough and is unsanitary.

The present invention has been made to eliminate the above-mentioned problems of the conventional type, and an object thereof is to provide a hygienic device having a simple structure and free from flock destruction at a low cost.

[Means for Solving the Problems] In order to achieve the above-mentioned object, a sludge distribution device of the present invention has a rotation shaft arranged in front of a sludge inlet along the width direction of a filter cloth, Is a gutter-shaped dispersion plate that inclines downward from the center toward both ends in the width direction of the filter cloth. The opening surface is hung with the opening facing the insertion port, and a rotation angle adjustment mechanism is arranged on the rotation shaft. It was done.

[Embodiment] The present invention will be specifically described below based on the illustrated embodiment.

FIG. 1 is a schematic side view of a belt press dehydrator equipped with the sludge distributor of the present invention. Sludge flocculated and flocculated in the coagulation / mixing tank 10 is fed from the sludge inlet 11 to the sludge distributor.
It is thrown into the filter cloth 13 by 12 and is sandwiched between the two filter cloths 13 and 14, and is dehydrated through a number of dehydrating rollers 15, so that the water content is drained.
From 16, the dehydrated cake is discharged from the cake discharge port 17, respectively.

Now, as shown in FIG. 1, the sludge distributor 12 has a sludge inlet 11
It is located in front of. That is, the bearing is provided on the inlet 11 side of the upper frame 19 of the inclined trough 18 arranged on the upper surface of the filter cloth 12.
20 and 20 are fixed, and a rotary shaft 21 is pivotally supported by this bearing. Then, the dispersion plate 22 is suspended and fixed on the rotating shaft 21 in the width direction of the filter cloth 13. As shown in FIGS. 2 to 4, the dispersion plate 22 has a gutter-shaped slanted flow path 22a which is inclined downward from the central portion toward both sides in the width direction of the filter cloth 13 and has an opening surface 22b. The top of the back plate 22c toward the sludge inlet 11 side
It is fixedly attached to 21. Further, a rotation angle adjusting mechanism 23 of a dispersion plate using a worm gear mechanism is arranged on one of the bearings 20, 20 supporting the rotation shaft 21, and a dispersion mounted on the rotation shaft 21 by rotating a handle 24. The inclination angle of the plate 22 can be adjusted.

[Operation] Next, the operation of the sludge distributor having the above structure will be described.

Sludge that has been flocculated in the coagulation / mixing tank 10 has a sludge inlet 11
It is supplied on the Kararou cloth 13. At this time, the dispersion plate of this device is
If 22 is made vertical as shown in Fig. 5a, the sludge supplied from the inlet to the dispersion plate 22 will be well-balanced from the center and both sides of the dispersion plate 22 as shown by the arrow in Fig. 5b. It drops onto 13 and is evenly fed to the entire filter cloth.

Next, by rotating the handle 24 and setting the dispersion plate 22 in a state of being flipped up to the input port 11 side as shown in FIG. 6a, the sludge supplied from the input port is dispersed as shown in FIG. 6b. twenty two
It hits the back plate 22c, is transmitted through the inclined flow path 22a, and is fed to both ends of the filter cloth 13.

If the handle 24 is further rotated and the dispersion plate 22 is set at a position retracted from the charging port 11 as shown in FIG. 7a, the sludge only slightly contacts the center front surface of the dispersion plate 22 (7b
(Fig.), Most of it is fed as it is to the center of the filter cloth 13.

As described above, the supply device of the present embodiment can adjust the sludge supply position by rotating the handle and changing the inclination angle of the dispersion plate 22.

It is needless to say that the present invention is not limited to the above-described embodiment, and various modifications and design changes can be made without departing from the spirit of the invention.

[Advantages of the Invention] Since the present invention has the above-mentioned configuration, it has the following unique effects.

No electric motor is required, and the structure is simple and the manufacturing cost is low.

Since the device is compact, the dehydrator itself can be downsized accordingly.

Sludge is supplied so that it slides on the dispersion plate, so there is no block destruction and the dewatering efficiency is increased.

At the end of the operation, all sludge is discharged from the inclined dispersion plate, which is hygienic.

[Brief description of drawings]

FIG. 1 is a schematic side view of a belt press dehydrator equipped with a sludge distributor according to an embodiment of the present invention, FIG. 2 is a plan view of the distributor, FIG. 3 is the same side view, and FIG. 4 is a front view. Figure, number 5a
7 to 7b are views showing an operating state, and FIG. 8 is a view showing a conventional type. 10: Coagulation and mixing tank, 11: Sludge inlet, 12: Sludge distributor, 1
3, 14: Filter cloth, 15: Dewatering roller, 16: Drain outlet, 17: Cake outlet, 18: Trough, 19: Upper frame, 20: Bearing, 21: Rotating shaft, 22: Dispersion plate, 22a: Tilt Flow path, 22b: Opening surface, 22c: Back plate, 23: Rotation angle adjusting mechanism, 24: Handle

Claims (1)

[Scope of utility model registration request] 1. A gutter-shaped gutter which is arranged in front of the sludge inlet along the width direction of the filter cloth, and which is inclined downward from the central portion toward both ends in the width direction of the filter cloth. A sludge distribution device for a belt press dewatering machine, in which a dispersion plate is hung with its opening surface facing an input port, and a rotation angle adjusting mechanism is arranged on the rotation shaft.