JPS607930B2 - Cake discharge device for filtration equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cake discharging device for a filtering device, particularly for a Nutsche type filtering device, which obtains a solid content, that is, a cake, by filtering a slurry liquid containing dyes, chemicals, and other chemical products.

Conventionally, in this type of filtration equipment, it is preferable to discharge the cake deposited on the cross material at the bottom of the main body at once from the center for the next process after completing the trenching, washing, and dewatering processes, and for this reason, generally A method in which an opening □ is provided and an on-off valve is provided at this gate, and the cake is scraped up to the center by a blade attached to a rotating shaft provided in the center of the main body, and discharged to the outside by opening the on-off valve. is taken. However, this method has the disadvantage that the cake tends to form a bridge in the center, making it difficult to discharge the cake smoothly. In addition, for this purpose, a cylindrical body with an open top end is installed at the entrance so that it can be moved up and down, and the cylindrical body is raised to a position above the slurry liquid level or cake surface during the transfer, washing, and dewatering processes. A method has been devised in which the cake is lowered during discharge, and the cake is discharged from the entrance at the upper end. However, even with this method, there is a problem that the slurry liquid level must be adjusted below the upper end of the cylinder, and furthermore, even during the cleaning, washing, and dehydration processes, the slurry liquid and cake enter from the entrance. It had the disadvantage of being easy. In view of the above-mentioned drawbacks of the prior art, the present invention provides a cake discharging device that does not require any adjustment of the slurry liquid level and does not cause any intrusion of slurry liquid or cake during the filtering, washing, and dewatering processes. To provide a cake discharging device for a filtering device, which can easily and automatically discharge the cake from the center to the outside without causing blockage phenomena such as bridging in the cake.

Next, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. In the sieving device shown in FIG. 1, 1 is a housing-like main body with a closed bottom, 2 is a oak plate removably attached to the open bottom of the main body 1, and on this oak plate 2 there is 3 has been counterfeited.

Reference numeral 4 denotes a drive device provided at the upper part of the main body 1, and a shaft 5 is suspended from the center of the interior of the main body 1 so that it can move up and down and rotate forward and backward.

Reference numerals 6 and 7 indicate horizontal arms attached to the lower end of the shaft 5, each having blades 6a and 7a, 7b on the lower surface.

These blades 6a, 7a, and 7b are provided so that the rotation locus of the blade 6a is located between the rotation loci of the blades 7a, 7b, and the rotation locus of the blade 6a is located between the rotation loci of the blades 7a and 7b, and When rotating in either reverse direction, oak wood 3
It is shaped so that the cake accumulated on top can be scraped into the center. Reference numeral 8 denotes a cake discharging device provided at the center of the lower part of the main body 1, and the structure of this device will be explained in detail below.

Reference numeral 9 denotes a cylindrical body that is inserted into an opening 2a formed in the center of the monkey plate 2 and projects into the inside of the main body 1, and is locked to the horizontal plate 2 by a bulge 9a formed at the lower part of the cylindrical body. .

The upper end of the cylindrical body 9 is closed to form a hemispherical shape, and only the lower end is open, and a concentric ring portion 9b projecting downward is formed inside the upper end. A ring 10 and a guide metal 11 are attached to the outer periphery of the ring portion 9b, and a groove 12 is formed between the outer periphery of the bracket and the cylinder body 9.
A packing 19 is attached to the inner part of the housing. Also, the cylinder body 9
As shown in FIG. 2, rectangular notches 13 and 13 are provided facing each other, the lower sides of which are positioned substantially on the same plane as the upper surface of the lumber 3. Reference numeral 14 denotes an inner cylinder whose upper and lower ends are closed and which is inserted into the cylinder 9. A guide metal 15 and a gland packing 16 are installed between the inner cylinder 14 and the bulging portion 9a of the cylinder 9. The inner cylinder 14 is vertically slidable in a sealed state between the inner cylinder 14 and the cylinder body 9.

17, 17 are a pair of cylinders fixed to the lower surface of the horizontal plate 2 in a hanging manner, and horizontal arms 18, 18 attached to the lower ends of the four inner cylinders 14 are connected to each rod 17a, 17a. ing.

In addition, the rods 17a, 17a of the cylinders 17, 17 in the figure
Both are in an extended state, and the upper end of the inner cylinder 14 is located below the lower sides of the notches □l3 and 13 of the cylinder body 9. Further, the stroke L of the rods 17a, 17a of the cylinders 17, 17 is set to be equal to or at least larger than the distance between the upper end of the inner cylinder 14 and the packing 19 attached to the groove 12. In the cake discharging device 8 as described above, during the concentration, washing, and dewatering steps, the sieving device is connected to the cylinder 17,
17 is contracted, and therefore, the upper end of the inner cylinder 14 is inserted into the groove 12 and the upper end abuts against the packing 19, as shown by the broken line in the figure, and the cylindrical body 9 is damaged.
3 and 13 are shielded, and the space between the upper end of the inner cylinder 14 and the ring part 9b is sealed by the packing 19 and the o-ring 10.

In this way, the slurry liquid or cake can be completely prevented from entering through the notches 13, 13 of the cylinder 9. On the other hand, in the discharge process, the cylinders 17, 17 are in an extended state as shown in the figure, and the upper end of the inner cylinder 14 is connected to the notches □13, 1 of the cylinder body 9.
3, and the cake is scraped toward the center by the rotation of the blades 6a, 7a, 7b as the shaft 5 is rotated by the drive device 4, and the cake is scraped toward the center from the notches □ 13, 13 to the inner cylinder 14.
After that, it easily falls without forming a bridge and is discharged to the outside. Next, a second embodiment of the present invention will be described with reference to FIGS. 3 to 6.

In FIG. 3, a cake discharging device 28 is provided at the lower center of the main body 1 (not shown), similar to the cake discharging device 8 of the first embodiment.

In the figure, 29 is a cylinder whose upper end is closed and has a hemispherical shape, and only the lower end is open. On the side thereof, as shown in Fig. 4,
Four rectangular notches 33 are formed at equal intervals in the circumferential direction. This cylindrical body 29 is a guide terminal interposed between the outer and downwardly extending annular extending portion 2b formed at the peripheral edge of the entrance 2a of the oak board 2. It protrudes into the interior of the main body from the closing opening 2a while being slidably sealed by a bolt 35 and a gland packing 36. A pair of cylinders 37, 37 are fixed to the lower surface of the oak board 2 in a hanging manner, and each rod 37a, 37a has a horizontal arm 38 attached to the lower end of the cylinder body 29.
, 38 are connected.

Here, the stroke L2 of Schilling 37, 37 is the third
At the time of maximum extension of the rods 37a, 37a shown in the figure, the cylindrical body 29 is positioned so that only the portion above the notches □ 33 to 33 (in this example, the spherical machine portion) protrudes from above Watarimura into the main body. On the other hand, the rods 37a and 37 shown in FIG.
The lower sides of each of the notches 33 to 33 are set to be located substantially on the same plane as the upper surface of the oak material 3 when contracted. In the cake discharging device 28 as described above, the cylinders 37, 37 are in the third
As shown in the figure, it is extended, and in this state, the notches □ 33 to 33 are located outside and below the main body, and the closed opening 2 of the monkey plate 2
a is blocked.

Therefore, during the above process, the slurry liquid or cake is retained within the main body without leaking to the outside. On the other hand, in the discharge process, the cylinders 37, 37 are in a contracted state as shown in FIG. The cake thus formed falls easily through the notches □ 33 to 33 without forming a bridge, and is discharged to the outside.

In the first and second embodiments described above, the mechanism for vertically moving the inner cylinder 14 and the cylinder body 29 is provided by the cylinders 7 and 17.
As for 37, 37, such an elevating mechanism is not limited to a cylinder, and may use other mechanisms.

Further, the shape of the notches 13 to 13 and 33 to 33 is not limited to a rectangular shape, but may be any shape, and the number thereof can also be selected as appropriate. As described above, the invention as set forth in claim 1 has a cylindrical body with a notch 〇 on the side and whose upper end is closed and whose lower end is open □. is placed inside the main body, and an inner cylinder whose upper and lower ends are closed is slidably inserted into the cylindrical body via a sealing mechanism, and this inner cylinder can be moved up and down by an elevating mechanism. By doing so, the notch opening of the cylinder body can be shielded by the inner cylinder when the inner cylinder is raised, so there is no need to adjust the slurry liquid level and there is no need for ant passage.
It has the advantage that it can completely and reliably prevent leakage of slurry liquid and cake during the cleaning and dewatering processes, and can be easily and quickly discharged without causing blockages such as bridges in the cake.

In addition, the invention set forth in claim 2 is such that a cylindrical body having a notch on the side and having a closed upper end and an open lower end protrudes into the main body from a closed opening formed in the center of the monkey plate. A sealing mechanism is interposed between the cylinder and the opening of the monkey plate, and the cylinder is movable up and down by a lifting mechanism, so that the notch is located inside the main body when the cylinder rises and outside the main body when it descends. This structure has the advantage that the same effect as the invention described in claim 1 can be achieved with a simple structure.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention;
The figure is a longitudinal sectional view showing the sieving device with the cake discharge device attached, FIG. 2 is a sectional view along the Rolo line in FIG.
5 to 5 show a second embodiment of the present invention, and FIG. 3 is a longitudinal cross-sectional view showing a cake discharging device together with a part of a filtering device;
FIG. 4 is a sectional view taken along line W--W in FIG. 3, and FIG. 5 is a longitudinal sectional view of the cake discharging device similar to FIG. 3, showing a state during cake discharging. 1...Main body, 2...Hasashi board, 2a...
- Closing, 3... Oak wood, 8, 28... Cake discharge device, 9, 29... Cylindrical body, 13, 33...
... Notch opening, 14 ... Inner cylinder, 16, 36 ... Gland packing, 17, 37 ... Cylinder. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Scope of Claims] 1. A device for discharging cake deposited on a filter medium placed on a filter plate provided at the bottom of the main body opening of a filtration device from the center of the filter plate, the device comprising: A cylindrical body having a notch opening at the top and a closed bottom end is inserted into the opening formed in the center of the filter plate with the notch opening located inside the main body, and the cylindrical body is fitted into the cylindrical body. An inner cylinder with open upper and lower ends is slidably inserted through a sealing mechanism, and this inner cylinder is movable up and down by an elevating mechanism, so that the notch of the cylinder body is opened when the inner cylinder is raised. A cake discharge device for a filtration device configured to be shielded by the inner cylinder. 2 A device for discharging cake deposited on a filter medium placed on a filter plate provided at the bottom of the main body opening of the filter device from the center of the filter plate, the device having a notch on the side and A cylindrical body with an upper end closed and a lower end open is protruded into the main body from an opening formed in the center of the filter plate, and a sealing mechanism is interposed between the cylindrical body and the opening of the filter plate, and A cake discharge device for a filtration device, wherein the cylindrical body is movable up and down by an elevating mechanism, and the notch opening can be located within the main body when the cylindrical body is raised and outside the main body when the cylindrical body is lowered.