JPS6249084B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cloth traveling device for a filter press, in which a large number of plates arranged in parallel on a guide rail are opened all at once to remove a cake and wash the cloth. Conventionally, as a cloth running device in this type of filter press, a pair of cloths is provided between each plate so as to form an inverted V shape when viewed from the side, and the upper end portion of the cloth is provided above the row of plates. It is connected to the upper device, and its lower end is wound around the guide roller provided at the bottom of the board, and then connected to the lifting device provided above the board mentioned above, and the pulling shaft of the pulling device is rotated in the forward and reverse directions. There are those that are driven to run the cloth up and down and discharge the cake formed between a pair of cloths, and those that are installed between each plate and have an inverted V-shaped cloth placed at the bottom of the plate. There is one in which the cloth is wound up with a take-up roll and pulled down to discharge the cake formed between the pair of cloths.

However, in order to eject the cake, the former
When the cloth is run downward, the cloth that has made a U-turn below the plate will run upward, and these will intersect between the narrow plates. At this time, since the descending cloth is holding the cake, it comes into contact with the ascending cloth and its pulling member when crossing, causing trouble. To prevent this problem, it is possible to widen the interval between each plate when opening the plates, but this will reduce the number of plates that can be installed per unit area (excess chamber), and the excess area will become smaller. There are some drawbacks such as: In addition, in the latter case mentioned above,
There are no parts that rise when the fabric is lowered, but since the take-up roll is located below the plate, this take-up roll is exposed to washing water and flying cake, and there is a risk that it will break down quickly. .

This invention has solved all the problems of the conventional filter press of this type as mentioned above.
The present invention will be described in detail below based on the drawings. First, as shown in the figure, the structure is such that a large number of parallel plates 1 are arranged between each other so as to cover the upper surface 2 of each plate 1... In a filter press in which a pair of cloths 3, 3 forming an inverted V-shape when viewed from the side are hung, and these cloths 2, 2 are freely runable up and down,
A torsion roller 4 is supported on the upper part of each of the above-mentioned plates 1, and the torsion roller 4 is
At the same time, the upper end of the hoisting cloth 5 is fastened to the bottom of the board 1, and the lower end edge of each of the pair of cloths 2, 2 provided between the adjacent boards is attached to the bottom of the board 1. The cloths 2 and 2 are joined together after being wound around a guide roll 6 provided thereon, and the edges of the joined cloths 2, 2 are connected to the lower end edge of the winding cloth 5. . It is connected to a pulley 10 fixedly provided to a shaft 9, and further, this core shaft 9 is operatively connected to a drive shaft 11 provided along the row of plates. To explain in detail the torsion roller 4 and its transmission mechanism, in FIG. The other end is fixed to the core shaft 9 and the torsion roller 4. A bevel pinion 13 is fixed to the outer end of the core shaft 9, and this bevel pinion 13 meshes with a bevel gear 14 of a drive shaft 11 provided along the plate row. This bevel pinion 13 and bevel gear 1
4 are provided in sets, and are provided alternately on the left and right ends of the core shaft 9. That is, when the plate 1 is closed, the size of these gears is limited by the thickness of the plate 1. In the illustrated example, the pulling cloth 5 is constructed of a net at a portion corresponding to the overboard 2 of the plate, and a fastener is used to connect it to the cloth 3. Further, in FIG. 5, reference numeral 15 is a through hole for supplying the stock solution, and reference numeral 16 is a through hole for supplying the stock solution provided in the cloth for pulling up.

The apparatus according to the present invention is constructed as described above, and therefore, when discharging the cake after passing, the plate 1 is opened as shown in FIG. 3, and the plate 1 is opened as shown in FIG. If the core shaft 9 is rotated by the shaft 11 in the direction in which the cloth 3 is loosened, the loosened cloth 3
is wound around a torsion roller 12 via a winding cloth 5. That is, a pair of cloths 3,
3 descends while maintaining tension, and
After the torsion roller 4 has wound up the pulling cloth 5 a predetermined number of times and the winding force by the torsion spring 12 has disappeared, the core shaft 9 is still driven to rotate. The cloth for pulling up is wound up by the winding force of the shaft 9. During this time, the belt 8 is unraveled as the core shaft rotates, and is let out by the torsion roller 4 as much as the cloth for pulling up is wound up. At this time, the length of the winding by the torsion roller 4 and the length of the belt 8 fed out from the pulley 10 are different, but this difference in length is automatically compensated for by the torsion spring 12 provided on the torsion roller 4. It is something that is absorbed and adjusted. That is, by winding up the pulling cloth 5, the pair of cloths 3, 3 are lowered, and the pair of cloths 3, 3 descending are always kept under tension by the above-mentioned torsion spring 12. However, the guide roll part can be opened left and right, and the cake formed therebetween can be completely discharged to the outside of the plate.

Next, after peeling and discharging the cake in this way, in order to return the pair of cloths 3, 3 to their original positions, the core shaft 9 is rotated by the drive shaft 11 in the opposite direction to that described above. By winding the belt 8 around the pulley 10, the pair of cloths 1, 1 can be pulled up. At this time, the pulling cloth 5 wound around the torsion roller 4 is unraveled, but in this case, the pulling cloth 5 is unraveled from the torsion spring 12, which was initially tightened. It is unwound by a force, then by the rotation of the core shaft 9, and in the final stage, by the driving force of the core shaft 9 against the spring force of the torsion spring 12,
Also in this case, the cloths 1, 1 always run under tension. Also in this case, the winding speed of the pulley 10 and the feeding speed from the torsion roller 4 are automatically adjusted by the torsion spring 12. After the pair of cloths 3, 3 have been pulled up to a predetermined position in this manner, the next dewatering operation can be started by closing each plate.

As is clear from the above description, in this invention, the torsion roller 4 provided at the top of the board is used to open the board and peel and discharge the cake, so the cloths 3, 3 are constantly It does not loosen, and therefore, when peeling the cake, there is no risk that the cloths, etc. that go up and down (a pair of cloths and the cloth for winding up, etc.) will come into contact with each other and cause an unexpected accident.
The gap between the plates 1 can be set to the minimum, and the excess area per installation area can be maximized. Furthermore, even if the cloth 3 contracts, the torsion spring 12 built into the torsion roller absorbs the amount of contraction, allowing it to deform the support bar as in the conventional case, or to use it for driving chains, etc. It is possible to prevent an excessive load from being applied. In addition, since the torsion roller 4 is provided above the board,
When peeling off the cake or washing the cloth, there is no chance of splashing cake or washing water falling onto it, and furthermore, maintenance such as replacing the cloth is easy. With the conventional device, it was necessary to work under the narrow row of plates when changing the cloth, but with the device according to the present invention,
To replace the cloth 3, with the plate 1 opened, operate the torsion roller 4 to pull up the fastener 17 shown in FIG. , it is sufficient to suspend it from the pulley 10, wrap its lower end around the guide roller 6, and then connect it at the position of the aforementioned fastener 17. Note that the pulling cloth 5 is not directly involved in excessive dehydration and does not need to be replaced every time a pair of cloths is replaced.

As described in detail above, the apparatus according to the present invention solves the problems caused by the cloth running problems of the conventional single cloth running type filter press, namely, the interference of crossing cloths, the shrinkage of the cloth, etc. As a result, it is possible to install more boards per unit area compared to the conventional method, greatly expanding the excess area, and increasing the opening and closing speed of the boards.
The running speed of the cloth can also be greatly increased, and its performance can be greatly improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a filter press, and FIGS. 2 and 3 are a front view and a side view, respectively, showing essential parts of a cloth traveling device according to the present invention.
FIG. 4 is a front view showing an enlarged part of FIG. 3;
FIG. 5 is a perspective view illustrating the suspended state of the cloth according to the present invention. Code explanation, 1... Board, 2... Overbed, 3...
Cloth, 4... Torsion roller, 5... Cloth for pulling up, 6... Guide roll, 7... Support bar, 8
... Belt, 9 ... Core shaft, 10 ... Pulley, 1
1... Drive shaft, 17... Fastener.

Claims (1)

[Claims] 1. A pair of cloths each forming an inverted V shape when viewed from the side are hung between each of the many parallel boards so as to cover the upper surface of each board, and these cloths are run up and down. In the freely adjustable filter press, a torsion roller 4 is supported on the upper part of each plate 1, and the upper end portion of the winding cloth 5 is fixed to the torsion roller 4, and the winding cloth 5 is fixed to the torsion roller 4. A guide roll 6 provided at the bottom of the plate 1 is wound around the lower edge of each of the pair of fabrics 3, 3 provided between adjacent plates around the lower end portion of the fabric 5. On the other hand, the upper ends of the pair of cloths 3, 3 are joined together, a support bar 7 is provided at the joined part, and a belt 8 is fixed at one end to this support bar 7. The other end is connected to a pulley 10 provided on the core shaft 9 of the torsion roller 4, and the drive shaft 1 is further provided with this core shaft 9 along the plate row.
1. A cloth traveling device in a filter press which is interlocked and connected to 1. 2 A pair of left and right drive shafts 11 are provided above the row of plates, and a core shaft 9 is provided on each plate,
A cloth traveling device in a filter press according to claim 1, which is alternately connected to the left and right drive shafts 11 in an interlocking manner. 3. Claim 1, wherein the pulling cloth 5 is made of a cloth coarser than the pair of cloths 3, 3.
Cloth running device in the filter press described in 2. 4. A cloth running device in a filter press according to claim 1, wherein a portion of the pulling cloth 5 corresponding to the overbed 2 is constructed of a coarse net. 5 In connecting the pulling cloth 5 and the lower end edges of the pair of cloths 3, 3, a belt-shaped connecting tool 17 is used.
A cloth running device in a filter press according to claim 1, characterized in that a cloth running device is used in a filter press. 6. The cloth running device in a filter press according to claim 1, wherein the upper ends of the pair of cloths are cut below the support bar 7, and the two cloths are connected and detached freely by a band-like connector 17.