JPS6032944Y2 - Press roll filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a press roll filter equipped with a filter supply device that uniformly supplies filter objects onto a furnace cloth.

As shown in Fig. 1, a press roll filter generally consists of an upper frame 1, a lower frame 2, a large number of rolls whose shafts are supported by these frames 1 and 2, and an endless ring attached to these rolls. It is composed of an upper furnace cloth 3 and a lower furnace cloth 4.

The operation of this device is such that the object to be filtered 5 is supplied to the horizontal portion of the lower furnace cloth 4, is sandwiched between the upper and lower furnace cloths 3゜4, is dewatered by the upper and lower dewatering roll groups 6, and is then alternately passed through the press roll group 7. As it passes in a zigzag pattern, it is further dehydrated and discharged as a dehydrated cake 8.

By the way, in the above-mentioned apparatus, when the object to be filtered is, for example, sludge, a Fischtel type feeding device is usually used.

As shown in FIG.
The sludge supply trough 9 has a length that is almost the same as the width of the sludge supply trough 9, and the Feistel type chute 10 has a corrugated shape and a widened tip, and supplies the sludge 5 uniformly in the length direction of the trough 9.

The sludge 5 is dropped onto the upper part of the chute 10, is guided by the corrugations of the chute 10, spreads in the width direction of the furnace cloth 4, and is introduced into the trough 9.

The sludge 5 introduced into the trough 9 is further equalized in the width direction and is supplied onto the lower furnace cloth 4.

However, even if such a device is used, especially when treating sludge with a high fiber content such as ice sludge, the fibers will get caught in the middle of the chute, disrupting the uniformity.
Since this must be removed manually, it is difficult to supply sludge uniformly.

If the sludge 5 supplied onto the furnace cloth 4 becomes non-uniform in this way, it will cause wrinkles in the furnace cloth and the dewatering efficiency will deteriorate.

Furthermore, wrinkled sludge cannot be easily recovered even if the sludge is supplied uniformly, and this causes inconveniences such as the need to stop the operation of the filter.

In view of the above circumstances, the present invention provides a press roll filter that uniformly supplies sludge-like material to be filtered onto a furnace cloth. a rotating shaft parallel to the lower edge of the opening of the container; a plurality of scraping blades attached to the rotating shaft for scraping out the filtered material from the supply container; The present invention is a press roll filter equipped with a filter supply device having means for rotating around an axis and means for tilting the supply container with respect to a reference line parallel to the rotation axis.

The present invention will be explained in detail below with reference to the drawings.

3 to 7 show an embodiment of the press roll filter according to the present invention.

In these figures, the same parts as in FIG. 1 are given the same reference numerals and their explanations will be omitted.

In these figures, FIG. 3 is a schematic view showing the entire press roll filter, and FIGS. 4 to 7 are partial detailed views.

In the figure, reference numeral 11 indicates a container body 11c having a C-shaped cross section and a gutter-like shape as a whole;
This is a supply container consisting of cold side plates 11b and llb at both ends of C.

A sludge receiving port 11a is provided at one longitudinal end of the upper part of the supply container 11.

The side plates 11b and llb of the supply container 11 have a lower edge 1 of the opening.
A rotating shaft 12 parallel to 1d is attached.

This rotating shaft 12 has four scraping blades 1 for scraping out sludge.
3 is attached, and the blade 13 is rotated by a motor 14 via a transmission 14a attached to the shaft 12.

In addition, supports 1 are provided on both side plates 11b and llb of the supply container 11.
5.15 is provided.

The supply device A configured in this way has the above-mentioned support 15.1.
The five portions are placed on a support stand 16.16 so that the side opposite to the socket 11a is slightly lowered.

A vertical bolt 17 for adjusting the inclination angle β of the feeding device A with respect to a reference line 16a parallel to the central axis of the rotating shaft 12 is screwed onto the slightly lower side of the support base 16.

Further, as shown in FIG. 7, side plates 11b and l of the supply container 11
lb, near the periphery of the side plate 11b and in the lateral direction of the attachment position of the support 15, the short side tip of an L-shaped pole 18.18 is rotatably attached.

The long side of this single-shaped bolt 18.18 is fastened by two nuts 19.19 which are screwed into screws cut on the long side, each sandwiching a part of the support base 16. Depending on the fastening position 19, the rotation shaft 12 is rotated by an angle of α with respect to an axis parallel to the rotation shaft 12.

Next, install the sludge supply device A configured as above.
This section explains the operation of the press roll filter.

The sludge introduced from the sludge receiving port 11a flows in the length direction of the container 11 (in the width direction of the lower furnace cloth 4) due to the inclination of the supply container 11, and is scraped onto the lower furnace cloth 4 by the scraping blades 13. .

If the sludge 5 scraped out at this time is biased toward the receiving port 11a, operate the vertical bolt 17 to further lower the ash receiving port to improve the flow of sludge, thereby increasing the width of the furnace cloth 4. Adjust the direction so that the sludge is evenly distributed.

Conversely, if the sludge is shifted to one side, reduce the inclination angle β.

In addition, if the sludge introduced from the sludge receiving port 11a makes a short pass and is immediately supplied onto the lower furnace cloth 4, operate the figure 1 bolt 18 to move the supply container 11 clockwise in FIG. A uniform feed of sludge can be obtained by rotating the angle .alpha. to change the angle .alpha. and adjusting the amount of time the sludge is held in the container 11 for a sufficient amount of time.

As described above, the press roll filter according to the present invention is equipped with a feeding device that can adjust the amount of sludge to be fed to the furnace cloth surface to be uniform, so it is possible to obtain a uniform feed. This enables stable operation without wrinkling of the furnace cloth.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram of the press roll filter, Fig. 2 a is a cross-sectional view of the Feistel type feeding device, Fig. 2 is a view taken from the ■-■ direction of Fig. 2 a, and Fig. 3 is the main An overall schematic diagram showing an embodiment of the press roll filter according to the invention, FIGS. 4 to 7 are views showing details of the sludge supply device portion of the press roll filter, and FIG. 4 is a cross-sectional view of the supply device. Figure 5 is a view taken from the ■-■ direction of Fig. 4, Fig. 6 is a view taken from the VI-VI direction of Fig. 4, and Fig. 7 is a view taken from the ■-■ direction of Fig. 5.
- ■ direction arrow view. 11... Supply container, lla... Socket,
llb...Side plate, 11c...Container body, lld...Lower edge, 12...Rotation shaft,
13... Scraping blade, 14... Motor,
14a...Transmission, 15...Support,
16...Support stand, 16a...Reference line,
17... Vertical bolt, 18... L-shaped bolt, 19... Nut, A... Supply device, β... Inclination angle , α...Rotation angle.

Claims (1)

[Scope of utility model registration request] A container for supplying objects to be filtered consisting of a gutter-shaped main body and a plate closing both ends of this main body, a rotating shaft arranged parallel to the lower edge of the opening of this container, and a rotating shaft attached to this rotating shaft to remove objects to be filtered from the supply container. It comprises a plurality of scraping blades, means for rotating the supply container about an axis parallel to the rotation axis, and means for tilting the supply container with respect to a reference line parallel to the rotation axis. A press roll filter having a filtered material supply device.