JPS58124508A - Method and apparatus for driving filter cloth in filter press - Google Patents

Abstract

PURPOSE:To reduce the inclination of damage of bending or breaking of a bar for hanging a filter cloth, in discharging a cake by drawing downward the filter cloth provided to each filter plate, by reducing the running speed of the filter cloth where the filter cloths are crossing. CONSTITUTION:The filter cloth 2 of a filter press is constituted in a two-folded form and a filter cloth hanging bar 6 is attached to the upper end thereof while a filter cloth hanging bar 12 is also attached to the lower end thereof. The upper bar 6 is connected to the lower bar 12 by a chain 8 wound around a drive sprocket 10. When the filter cloth 2 is drawn downward in order to discharge a coke from the filter cloth and turned back around a guide roll 3 the filter cloth during falling and the filter cloth during rising are crossed. Therefore, an apparatus for detecting a position where the upper end and the lower end bars 6, 12 of the filter cloth is provided and remarkably reduce the running speed of the filter cloth in the vicinity of the crossing position, thus mutual interfering contact of both bars during crossing is prevented.

Description

[Detailed description of the invention] This invention provides independent furnace cloths for each P plate,
When discharging the cake, the method and device for driving the P cloth of a filter press configured to pull down these F cloths and return the rotating wheels of the rolls provided at the bottom of the oven plate. Regarding the revised jLK. Conventionally, in this type of filter press, when the F cloth is lowered in order to discharge cake, the descending F cloth and the returning and rising P cloth inevitably intersect between the narrow vhF plates. .

Since these furnace cloths have a narrow space between the furnace plates, the mutual
When I touched it, it swayed. In particular, a bar for hanging the IIKF cloth on the F cloth and a base for supplying the raw solution are provided, and the bottom end of the furnace cloth is
In models equipped with support bars for hanging Fm, if these bars that use a large amount of F fabric or support bars intersect with each other while driving, they may come into contact with the bolt, and the bars may bend or break, resulting in a serious accident. It may happen.

This invention solves the above-mentioned difficulties of this type of filter press.Hereinafter, this invention will be explained in detail based on the drawings.As shown in iiQ, the structure is such that between each plate 1, Furnace cloth 2 is installed to cover the filter bed of each furnace plate 1, and when the cake (F dregs) is discharged, it is pulled down and -plate 1
Make a U-turn by turning the guide roll 30 times at the bottom of the
In a filter press in which the descending P island 2 intersects with the ascending F cloth 2 after making a U-turn, a DC motor 4 is used as a rounding motor for driving the furnace cloth 2, and the furnace cloth 2 A detection device 5 is provided in the transmission path for driving the furnace cloth 2, and the bar 6 is located at the upper and lower ends of the furnace cloth 2.
This detection device 1 and 8i + DC motor 4 are interlocked and connected.
The running speed of the furnace cloth 2 is set to be extremely slow in the vicinity of the position where the upper and lower ends of the furnace cloth 2 intersect. To explain in detail the structure of the F fabric 2 used in this invention, Fig. 14Jl1 is a schematic diagram showing only the F fabric taken out, and the F fabric 2 is configured in a bifold shape. A bar 6 for hanging is attached to the upper end of the bar.
Hanging A-12 for hanging F1 is also attached to the lower end of each of Ii2. Then, #i chain 8 is attached to the upper bar 6.
When the chain 8 is installed, the chain 8 is wound around the sprocket 10 attached to the drive shaft 9, and then wrapped around the lower suspension bar 12.
The connection is broken.

Figure 2 μ shows the above-mentioned furnace cloth suspended between each furnace plate 1, and the lower end of each of the two folded F cloths 2 is
The guide rolls 3 and 3 provided at the lower part of the plate l are respectively wound and the parts between the rpm and x that are in contact with each other are connected to the hanging par 12 at the lower end of the nine furnace cloth 2. Further, the aforementioned drive shaft 9 is interlocked with a slide shaft 13 having a hexagonal round cross section through a bevel gear 14. Hearth cloth 2
moves up and down, and the bars 6 and hanging pars 12 provided at the upper and lower ends of the furnace cloth 2 move up and down like a seesaw. Pottery,
In Fig. 1 and Fig. 31g2, the reference numeral 16 indicates the F cloth gap K.
I [4] indicates the cap for supplying liquid. next,
To explain the above-mentioned detection devices in detail, FIG. 3 is a schematic diagram of the drive device of P162 that includes the first detection device, 4 is a DC motor, 17 is a transmission shaft to the left and right slide shafts 13,
18 indicates a coupling. 5 is a device for detecting the running position of the furnace cloth. FIG. 4 shows the details of this detection device, and the reference numeral 19 in the figure is a screw shaft driven by the power from the transmission shaft 17.
is screwed together, ToL, and the $ set on this nut 20.
21 is engaged with a guide plate 23 whose both ends are fixed to the left and right seven leaves 22 and 22 to prevent rotation. Therefore, it is possible to advance and retreat only in the axial direction of the screw shaft 19.The limit switch 24 is installed facing the movement range of the nut 20.

The filter is designed to be in sliding contact with the outer peripheral surface of the nut, and when the filter is in sliding contact with the top of the nut, the DC motor 15 can be switched to a low speed.

The device according to the present invention is configured as described above, and now,
Limit switch! 4 at the center of the screw shaft 19,
By rotating the screw shaft 23 in the forward and reverse directions, the nut 20 moves left and right and contacts the limit switch 24 at an intermediate portion thereof. Therefore, if the left and right movement stroke of the nut 20 corresponds to the lifting stroke of the oven cloth 2, when the oven cloth 2 is lowered from the state shown in FIG. 2 to discharge the cake, the upper 6 descends to the approximately middle position above and below the furnace plate l, and on the other hand, if the furnace cloth travels to the position where it intersects with the hanging bar 12 at the lower part, this will cause the kljlg and the kala) 20 in the above-mentioned detection device. is the limit switch 24
will come into contact with. Then, by moving the limit switch 24 onto the slope of the nut 20,
When the motor 4 is braked and is in sliding contact with the parallel portion of the top, the motor 4 can be switched to a low speed. In other words, between each P plate, the traveling speed can be reduced only during the period where the upper and lower ends of the running P cloth intersect, so that the KF cloth sways when traveling in this area. However, if the F fabric is thickly coated with scum (F slag) and the R fabric is descending and the P fabric is ascending,
Even if the top and bottom edges of the cloth touch each other,
It is possible to prevent hK from getting caught and causing a major accident. Regarding deceleration, even when pulling up the garden hearth cloth after the discharge in the cooling is finished, the running speed of the %F cloth is reduced in the same manner as described above at the part where the upper and lower ends of the %F cloth intersect. By decelerating the speed by 1 degree, the result is obtained, that is, P
In order to pull up the cloth, when the pongee shaft shown in FIG. 3 K is rotated in the opposite direction to that described above, the screw shaft 19 in FIG. It is slowed down by contacting the limit switch 24 at approximately the mid-leap position and decelerating the traveling speed of the oven cloth 2. The running state of these P cloths 2 is shown in Figure S. The vertical axis is the running speed of the P cloth, and the horizontal axis is time. The two large mountains show how the P cloth is being pulled down and pulled up. i
Ru.

As explained above, the present invention provides a furnace cloth running device in a filter press, which is provided between each P plate and whose upper end and lower end move up and down in a seesaw manner to intersect with each other.
At the part where the upper end and the lower end of the cloth intersect and run, the running speed is slowed down, so in the part where the upper end and the lower end of the cloth intersect, the FIE swings, etc. It is possible to prevent interference with each other, and it is possible to eliminate problems caused by P high running, which often occurred in the past due to the P cloth support par getting caught in this part.

[Brief explanation of drawings]

Figure 311 is an oblique illustration showing the supporting state of the P fabric according to the present invention. Figure 2 is an 11th view of the P fabric being supported between the P plates, and Figure 3 is a view showing the state in which the P fabric is supported between the P plates. FIG. 4 is a plan view showing the transmission mechanism, and FIG. 4 is a plan view of a device for detecting the running position of the oven cloth. Section 5 is a graph showing the running state of F right. Code explanation LP board 2 F cloth & plan ＾p-rule ya DC motor a detection device

Claims (1)

[Claims] +1) A KF cloth is provided between each P plate to cover the filter bed of each furnace plate, and when discharging the cake, this is pulled down to rotate the guide roll provided below the furnace plate. wa),
At the filter press i, which is set so that the descending F cloth intersects with the returning and rising P cloth, the upper end of the descending P cloth and the lower end of the returning and rising FIM are separated. A method for driving a P cloth in a filter press, characterized in that the traveling speed of the armpit P cloth is significantly reduced at the intersecting portions. (!I) K so that each furnace plate 10-overbed is covered between each P plate.
Set up the P cloth and discharge the cake, pull it down and return the guide wheel 3 provided under the furnace plate 1 (111), and return with the F cloth 2 which is descending and ascending. A DC motor 4 is used as a prime mover for driving the furnace cloth 2, and a DC motor 4 is used as a prime mover for driving the furnace cloth 2, and a motor 4 is installed in the transmission path for driving the cloth 2. is provided with a detection device 1 capable of detecting the position where the upper end and the lower end of the V cloth 2 intersect, and this detection device 5 and the aforementioned DC motor 4 are interlocked and connected to detect the upper end of the F cloth 2. In the vicinity of the position where the lower end intersects i,
A drive device for F cloth in a filter press, characterized in that the running speed of the F cloth is significantly reduced.