JPH0741127B2 - Filter paper drawer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter paper drawing device used in a horizontal filter plate type filter.

[0002]

2. Description of the Related Art Since a horizontal filter plate type filter can be operated under pressure by using a filter material such as a filter paper suitable for the required filtration accuracy, it is possible to perform a highly accurate filtration, and the filter paper can be automatically replaced. Because of its characteristics, it is used in a wide range of fields such as cleaning of metal rolling oil or separation of crystals in the field of fine chemicals.

The horizontal filter plate type filter will now be described. FIG. 6 is an overall structural view of the horizontal filter plate type filter. In the figure, reference numerals 1 and 1 denote a plurality of rectangular frame type filter plates which are vertically stacked, and a plurality of stages of filter paper rolls 2 and 2 are arranged along one end of the filter plates 1 and 1. The filter paper P spread from each filter paper roll 2 is drawn out to the other end through the space between the filter plates 1 and 1, and the whole laminated filter plate is tightened by the pressure jack 4, and the stock solution to be processed is pressurized by the pump 5. Each of the filter plates 1 through the stock solution supply header 6 and the pressure-resistant hoses 7, 7 connected thereto
Supply to 1. The filtrate filtered by the filter paper P in the filter plate is discharged to the filtrate tank via a filtrate discharging hose and a header (not shown). If the filtration resistance of the filter paper increases and the filtration operation becomes difficult, the pressure jack 4 is driven to open the gap between the filter plates, and the filter paper withdrawing device 8 pulls a new filter paper onto the filter plate for the next filtration operation. It is being deployed.

The applicant of the present invention has previously made the proposal disclosed in Japanese Patent Publication No. 1-56810 (Japanese Patent Application No. 60-42344) regarding the filter paper drawing device 8 of the horizontal filter plate type filter. The outline of the drawer will be described with reference to the drawings. FIG. 4 is a side view of the drawer, and FIG. 5 is an enlarged view of a main part of the spike portion (however, the members 21 and 23 of FIG. 4 are improved by the present invention). In the figure, 11 is a pair of left and right upper endless chains wound around sprockets at the left and right ends of two rotating shafts arranged in parallel at the upper part of the machine frame 10, and 12 is also a lower endless chain.
Reference numeral 13 denotes a pair of left and right link bars, the upper end of which is pivotally attached to the upper endless chain 11 and the lower end of which is pivotally attached to the lower endless chain 12, and which moves in parallel along the same trajectory as the endless chains 11 and 12. . Reference numeral 14 is a plurality of parallel spike bars whose left and right ends are fixed to the inside of the pair of left and right link bars 13 at equal intervals, and a plurality of spikes 15 are projectingly provided on the lower surface. Reference numeral 16 denotes a filter paper restraining bar which is arranged along the front surface and the rear surface of the spike bar 14 and has vertical guide grooves 17 near both ends thereof. Reference numeral 18 designates a pair of left and right shoulder bolts which are provided in the vicinity of both ends of each spike bar 14 so as to project forward and backward, respectively, to loosely hang the filter paper holding bar loosely through the guide grooves 17. 19 is a machine frame 10 corresponding to each of the laminated filter plates 1 and 1.
It is a filter paper tray that is horizontally installed vertically at appropriate intervals, and each spike 15 has the same number of fine grooves (not shown) as the spikes so that each spike 15 can pierce the filter paper P and move horizontally in the pull-out direction.
Are installed in parallel.

In the above-mentioned filter paper withdrawing device, the link bar 13 moves downward at the right end of FIG. 4 as the upper and lower chains 11, 12 circulate, whereby the spike bar 14 fixed to the link bar 13 is also moved. Since the filter paper P is pierced by the spikes 15, 15 protruding on the lower surface and then moved horizontally to the left, the used filter paper P is pulled out onto the tray 19. Then, when the link bar comes to the left end position in FIG. 4, the spike 15 protruding from the spike bar 14 also moves upward and tries to separate from the filter paper. At this time, the filter paper restraining bar 16 is placed in the vertical guide groove. By the action of 17 and the shoulder bolt 18, the spike 15 moves upward with a slight delay, so that the spike 15 can be completely separated from the filter paper P while holding the filter paper P while the spike 15 is removed from the filter paper P. After this, the spike bar 14 horizontally moves to the right at the height after the upward movement, reaches the right end position in FIG. 4, and the next pulling operation can be performed.

[0006]

As a result of further examination of the above-mentioned filter paper drawing apparatus, the following problems were found. That is, when the filter paper P is pierced by the spikes 15 and pulled out, if the filter paper is strong, it can be pulled out smoothly, but the mechanical strength is weak, especially since it is soaked in the filtrate for a considerable time, the strength when wet is reduced. When moving with the spikes 15, the filter paper is broken and cannot be pulled out smoothly.
The present invention has been made in view of the above problems,
An object of the present invention is to provide a filter paper withdrawing device for a horizontal filter plate type filter that can always smoothly withdraw the filter paper.

[0007]

The gist of the present invention is to spread a filter paper on a tray (19) installed in a machine frame (10) and to vertically move the upper and lower endless chains (11, 12). The filter paper is composed of a pair of left and right link bars (13) whose ends are driven and move horizontally, and spikes (15) protruding from the lower surface of spike bars (14) whose left and right ends are fixed to the link bars. In the filter paper withdrawing device of the horizontal filter plate type filter, which is pierced and pulled out from the filter plate (1),
And (b) machine frame a pair of left and right guide rails that are laid horizontally in the left and right ends of the (10) (21), (ii) two cam followers to slide horizontally fitted in the guide rail (2
2) A pair of left and right carrier plates (23) suspended freely by the filter paper and moving in the pull-out direction of the filter paper, and (c) links whose left and right ends are pivotally attached to the lower part of the carrier plate (23).
The spike bar is fastened to the shaft of the bar cam follower (24).
-Installed in parallel with (14), the spike bar (14)
A filter paper receiving bar (25) that holds the filter paper between the bottom surface and (d)
Link bar with cam follower (24)
The link bar (13) is vertically engraved on (13)
A filter paper withdrawing device characterized in that it is provided with a long groove (26) that can slide downward .

[0008]

The filter paper P pulled out from the filter plate 1 and spread on the tray 19 is inserted between the spike bar 14 and the filter paper receiving bar 25. Since the guide rail 21 is laid parallel to the filter paper tray 19, the filter paper receiving bar 25 fastened to the carrier plate 23 suspended by the sliding cam follower 22 fitted to the guide rail 21 is the filter paper tray. 19
It is possible to move above with a certain small gap. Since the downward force of the link bar 13 is slightly exerted on the spike bar 14, the spike bar 14 has a filter paper receiving bar 25.
Since the upper filter paper is pressed and the spikes 15 also pierce the filter paper at the same time, the filter paper receiving bar 25 and the filter paper can move integrally, so that even mechanically weak filter paper can be pulled out smoothly without breaking. it can.

After pulling out the filter paper for a predetermined length, the link bar 13 tries to move upward at the left end position in FIG. 4, but at this time, the link bar 13 has a long groove 26 that contacts the cam follower 24.
Since it is engraved, the filter paper receiving bar 25 can be smoothly moved upward with the lower position kept. After the upward movement, the spike bar 14 moves horizontally to the right (FIG. 3) while being lifted, but the filter paper receiving bar 25 fastened to the carrier plate 23 slides on the lower surface of the filter paper to the right end in FIG. You can move.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a left half portion of the main part of the present invention, FIG.
4 is a drawing of the filter paper as viewed in YY of FIG. 1, FIG. 3 is a drawing of lifting the spike bar as viewed in YY of FIG.
Is an overall side view. In the figure, the same members as those in the conventional device are designated by the same reference numerals.

In the figure, reference numeral 21 denotes a pair of left and right guide rails horizontally laid on the left and right ends of the machine frame 10, and two cam followers 22 for suspending a carrier plate 23 are fitted to the guide rails 21. At the lower part of the carrier plate 23, a filter paper receiving bar 25 that contacts the lower surface of the spike bar 14 and has a certain gap on the filter paper tray 19 is provided.
The left and right ends of the are fastened using the shaft of the cam follower 24. The link bar 13 is provided with a vertical long groove 26 for mounting the cam follower 24. Reference numeral 15 is a spike protruding from the lower surface of the spike bar 14, and 16 is a filter paper restraining bar which is arranged along the front surface and the rear surface of the spike bar 14 and which is suspended by a shoulder bolt 18.

In the above structure, the filter paper P on the tray 19 is inserted between the spike bar 14 and the filter paper receiving bar 25, and then fixed by the movement of the link bar 13 (direction of arrow in FIG. 2). Spike bar 14 and cam follower 2
The filter paper receiving bar 25, which is attached via 4 in FIG.
To the left end position and pull out the filter paper P by a predetermined length. Next, the link bar 13 moves upward, but the fixed spike bar 14 also moves upward together, and the filter paper restraining bar 16 also moves upward with a slight time delay, and the spike 15 is completely separated from the filter paper P.
At this time, since the filter paper receiving bar 25 is engaged with the long groove 26 of the link bar 13 via the cam follower 24, it does not move upward and remains at the lower position. Then, in this state, the link bar 13 moves (in the direction of the arrow in FIG. 3), but the spike bar 14 is kept at the upper position and the filter paper receiving bar 25
Moves to the right end position in FIG. 4 while slidingly contacting the lower surface of the filter paper P, and waits for the next drawing operation.

[0013]

According to the present invention having the above-described structure and action, the filter paper on the tray is inserted and pulled out by the spike bar and the filter paper receiving bar, so that even filter paper having a weak mechanical strength can be pulled out smoothly. It is possible to obtain the effect of expanding the range of application of the horizontal filter plate type filter.

[Brief description of drawings]

FIG. 1 is a front view showing a left half portion of a main part of the present invention.

FIG. 2 is a drawing showing a filter paper taken along line YY of FIG.

FIG. 3 is a diagram of lifting and returning the spike bar viewed from YY in FIG.

FIG. 4 is a side view of a filter paper withdrawing device of a horizontal filter plate type filter.

FIG. 5 is an enlarged view of a main part of a conventional spike section.

FIG. 6 is an overall schematic view of a horizontal filter plate type filter.

[Explanation of symbols]

1: filter plate, 2: filter paper roll, 4: pressure jack, 5: undiluted solution pump, 6: undiluted solution header, 7: pressure hose, 8:
Filter paper drawing device, 10: machine frame, 11: upper chain, 1
2: lower chain, 13: link bar, 14: spike bar, 15: spike, 16: filter paper restraining bar, 17: vertical guide groove, 18: shoulder bolt, 19: filter paper tray, 21: guide rail, 22: cam follower, 23:
Carrier plate, 24: cam follower, 25: filter paper receiving bar, 26: long groove.

 ─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-61-200822 (JP, A) JP-A 1-215320 (JP, A) JP-A 2-237609 (JP, A) Actual flat 3- 98907 (JP, U)

Claims (1)

[Claims] 1. A tray (1) installed in a machine frame (10).
9) Spread the filter paper on the upper and lower endless chains (11, 1,
2) a pair of left and right link bars (13), whose upper and lower ends are driven horizontally, and spikes (15) projecting from the lower surface of spike bars (14) whose left and right ends are fixed to the link bars. In the filter paper withdrawing device of the horizontal filter plate type filter which pierces the filter paper with the above and draws it from the filter plate (1), (a) a pair of left and right guide rails (21) horizontally laid at the left and right ends of the machine frame (10) and), and (b) a pair of right and left carrier plates that move in the drawing direction of the filter paper freely is suspended to two cam followers to slide horizontally fitted in the guide rail (22) (23), ( C) The left and right ends are pivotally attached to the bottom of the carrier plate (23).
Spy that is fastened to the shaft of the cam follower (24) for the crank bar
The spike bar (1
A filter paper receiving bar (25) for sandwiching the filter paper with the lower surface of 4);
(D) Insert the cam follower (24) for the link bar and insert it.
The link bar (1
3) A device for pulling out a filter paper, which is provided with a long groove (26) that allows the device (3) to slide in the vertical direction .