JPH06134219A - Filter paper drawing device for horizontal filter plate filter - Google Patents

Abstract

PURPOSE:To provide a filter paper drawing device of horizontal filter plate type filter which is labor-saving and suitable for the automatic operation and can clamp a filter paper securely and firmly, draw out the paper without damage and dispose a waste paper easily. CONSTITUTION:A filter paper drawing device comprises a lower lever frame of U-shaped plate moving up and down slantedly around a support on the vertical plane and provided with a couple of lower levers 27, 27, left and right, respective front ends of which are fixed to both ends of a chuck installation bar 28 in the left and right direction, and an upper lever frame of U-shaped plate set slightly above and in parallel with the lower frame and moving slantedly around the support on the vertical plane and provided with a couple of upper levers 23, 23, respective front ends of which are fixed to both ends of a filter paper pressing bar 24 in the left and right direction. The filter paper is clamped and pressed by carrying out the synchronous opening and closing and back and forth strokes of front ends of a couple of lever frames, upper and lower, and then the discharge strokes and the return strokes in which both bars are opened and returned to the original positions after the discharge strokes are repeatedly carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter paper withdrawing device for 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 filtering accuracy, it is possible to perform highly accurate filtration, and the filter paper can be automatically replaced. Therefore, 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. Explaining this type of filter, in the side view of FIG. 5, 01, 01 ... Denote a plurality of rectangular frame-type filter plates supported in the vertical direction so that they can be separated and tightened vertically. Filter paper rolls 02, 02 are provided. Adjacent filter plate 0 with pressure jack 04 when feeding and discharging filter paper
Filter paper 03 spread from each filter paper roll 02 by separating 1
Through the space between the filter plates 01, 01, and at the time of filtration, the entire laminated filter plate is tightened with the pressure jack 04.
The stock solution to be processed is pressure-fed by the pump 05, and the stock solution supply header 06 and pressure resistant hoses 07, 07 ...
And then supply to each filter plate 01. The filtrate filtered by the filter paper 03 in the filter plate is discharged to the filtrate tank through the filtrate discharge hose and the header. If the filtration resistance of the filter paper increases and the filtration operation becomes difficult, the pressure jack 04 is driven. The filter plate is separated and opened, and a new filter paper is drawn on the filter plate by the filter paper drawing device 08 to perform the next filtering operation. As a typical device for pulling out filter paper used in the above-mentioned horizontal filter plate type filter, there is the device previously proposed by the applicant in Japanese Patent Publication No. 1-56810.

[0003]

A conventional filter paper drawing device using a filter paper roll of this kind is a very suitable device for automatically and simultaneously drawing the filter papers from a plurality of stacked filter plates. However, if the mechanical strength of the filter paper is weak, or if the filter paper has a tendency to meander, the filter paper may break and it may not be possible to draw it out, or it may not be possible to draw it out to the correct position on the filter plate due to meandering of the filter paper. There's a problem.

The present invention has been proposed in view of the above circumstances, and it is suitable for labor-saving and automatic operation in which the filter paper is securely and firmly clamped and pulled out without being damaged, and waste paper is easily treated. An object of the present invention is to provide a filter paper withdrawing device for a horizontal filter plate type filter.

[0005]

Therefore, according to the invention of claim 1, the filter paper is pulled out to the front side from a plurality of stages of filter paper rolls arranged in parallel from the upper stage to the lower stage, and filtration is performed between a pair of upper and lower filter plates. In the filter paper withdrawing device of the horizontal filter plate type filter machine that automatically discharges each filter paper after performing
The front ends of a pair of left and right lower levers are fixed to both ends of the chuck mounting bar in the left and right direction, and the planar shape is U-shaped. The lower lever frame tilts up and down around the fulcrum on the vertical vertical plane, and the lower lever. Left and right side by side above the frame
The front end of each pair of upper levers is fixed to both ends of the filter paper holding bar in the left and right direction, and the upper surface of the upper lever frame tilts around the fulcrum on the vertical vertical plane and has a U shape on the top surface of the chuck mounting bar. A plurality of chucks projecting at equal intervals and projecting small spikes in the center of the contact surface, and a plurality of small holes respectively formed on the lower surface of the filter paper restraining bar at positions facing the upper ends of the small spikes. After the front and rear ends of the pair of upper and lower lever frames are synchronously opened and closed and the stroke in the front-rear direction is performed, the filter paper is clamped and discharged,
It is characterized in that it is equipped with a filter paper discharging device for repeating the return stroke in which both the bars are opened and returned to the original position. According to a second aspect of the present invention, after the filter paper discharging device according to the first aspect is discharged, the filter paper of the upper stage is discharged, the table is moved backward by a certain distance on the front-rear moving table, and then is lowered by one step, and then is moved forward again by the front-rear moving table, and then the lower step. The above-mentioned operation for discharging the filter paper is sequentially repeated to discharge all the filter papers, and then the filter paper discharging device is returned to the position of the first-stage filter paper.

According to a third aspect of the present invention, a rotary cutter is installed horizontally above the front end of the filter paper pulling device so as to be able to move up and down, and automatically moves down to a predetermined level after the discharge stroke of the filter paper. It is characterized by comprising an automatic filter paper cutting device for cutting the filter paper in the width direction by reciprocating once in the left-right direction.

According to a fourth aspect of the present invention, there is provided a pair of contact type or photoelectric type limit switches symmetrically arranged on the tray of the discharged filter paper and at the left and right edge positions of the filter paper. , The filter paper meandering correction that automatically moves an appropriate amount of the left and right moving table that mounts and supports the tray to the opposite side of the ON limit switch in conjunction with the one limit switch that is turned on by the meandering of the filter paper. It is characterized by having a device.

[0008]

According to the structure of claim 1, when the front ends of the pair of upper and lower lever frames are closed synchronously, the filter paper restraining bar moves downward and the plurality of chucks simultaneously move upward to move the upper and lower surfaces of the filter paper. Because of the clamping pressure, the upper end spike of each chuck penetrates the filter paper and its upper end enters the small hole of the filter paper restraining bar, and the flat surface of the upper end of the chuck presses the filter paper against the filter restraining bar with a uniform surface pressure. Next, the lever frames are synchronized with each other in the discharge stroke, and the filter paper is pulled forward by the surface pressure of multiple places by each chuck, and when the lever frames stop at the end of the discharge stroke, the front ends of the lever frames are synchronized. The lever frames repeat the process of moving forward and returning to their original positions with their front ends opened after being separated from the filter paper in the vertical direction. According to the configuration of claim 2, after the filter paper discharging device of claim 1 is discharged from the upper filter paper, the filter paper is retracted a predetermined distance on the front-rear moving table and then lowered by one step, and then moved forward again on the front-rear moving table. Then, the operation of discharging the lower filter paper is sequentially repeated to discharge all the filter papers, and then the discharging device for returning the filter paper discharge device to the position of the first filter paper has a lifting action.

According to the third aspect of the present invention, when the lateral guide rail moves downward in parallel from the upper position to the lower position at the end of the discharge stroke, the rotary cutter is guided by the relay control by relay control. Make one round trip along the rail. At that time, the rotary cutter automatically cuts the filter paper at a predetermined groove position and then automatically returns to the original position. When the filter paper is cut, the filter paper is held by a pair of upper and lower lever frames.

Further, according to the structure of claim 4, the right and left 1
By the action of the left-right movement table that moves left or right in conjunction with turning on the pair of limit switches, the filter paper that is too close to the right moves slightly to the left, and the filter paper that is too close to the left moves slightly to the right. , The meander is automatically corrected.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described. FIG. 1 is an overall side view thereof, FIG. 2 is a front view taken along line II-II of FIG. 1, and FIG. 3 is a plane taken along line III-III of FIG. Fig. 4 and Fig. 1
3 is a perspective view showing the vicinity of the front and rear sliding plates of FIG.

First, in FIGS. 1 to 3, reference numeral 1 designates four pillars 1a standing on the floor at front, rear, left and right positions, and the upper ends thereof are fixed to each other by a rectangular horizontal frame to form a cuboid space inside. The fixed frame members 2 extend vertically along the left and right sides of the fixed frame member 1, and the upper and lower ends thereof are axially supported by the upper and lower ends of the fixed frame member 1 through a pair of bearings 3 and 3, respectively. It is a pair of left and right ball screw rods, and the ball screw rods 2 are the same through a pair of left and right bevel gear boxes 6 and 6 by a worm reducer 4 and a horizontal drive shaft 5 that are fixed to the center of the upper end of the fixed frame 1. Rotate in the direction. Reference numeral 8 denotes an elevator frame that forms each ridge line of the upright cube, and the left and right ends of the elevator frame 8 are screwed into a pair of left and right ball screw rods 2 and 2 via a pair of upper and lower ball nuts 8a, respectively. The rods 2 and 2 are supported so as to be able to move up and down by the synchronous rotation, and as will be described later, the action of the related members attached causes the action of pulling out the filter paper.

A front and rear end 9 is slidably supported by a pair of left and right linear bearings 10, 10 extending in the front and rear direction along the lower end of the elevator frame 8, and a rectangular front and rear that is moved by the drive cylinder 11 in the front and rear direction. The movable table 13 is a rectangular left-right movable table mounted on the front-rear movable table 9, and the left-right movable table 13 is provided with a pair of front and rear linear bearings 14 extending in the left-right direction along the front-rear ends of the front-rear movable table 9, respectively. The movable table 9 is moved in the left-right direction via a drive cylinder 15 attached to the movable table 9, and the movable tables 9 and 13 cooperate to form a two-dimensional movable table. Reference numeral 17 denotes a pair of left and right gate-shaped frames which are erected on the left and right moving table 13. Next, in FIG. 1 and FIG. 4, as shown in FIG. 4, 19 is a front and rear sliding plate that extends vertically along the vertical vertical planes along the inside of each of the pair of left and right gate frames 17, 17. , The upper overhangs 19 projecting rearward from the upper and lower ends, respectively.
a and a lower overhang 19b, and chain brackets 19c each having a front-rear direction angle that are horizontally provided on the outer surface of the central portion are linear bearings 19d.
It is slidably supported in the front-rear direction on the upper sill member of the gate type frame 17 via.

Reference numeral 21 denotes a sprocket 2 pivotally attached to the front and rear ends of the upper sap members of the gate-shaped frames 17 and 17 by lateral pins.
1a, 21b, a sprocket 21c pivotally attached to the rear end of the sapwood slightly below the sapwood by a lateral pin, and a sprocket 21e of a motor 21d fixed on the left and right moving table 13 in an L-shaped loop. The upper end of the endless chain 21 is fixed to the chain bracket 19c. Reference numeral 23 designates a pair of left and right upper levers extending substantially in the front-rear direction, each of which has a central fulcrum pivotally supported on the inner side surface of the front-rear sliding plate 19 via a lateral pin, and front end portions extending slightly upward and downward from each other. The upper levers 23, 23 are fixed to both ends of the filter paper restraining bar 24 in the direction, and are integrated with the filter paper restraining bar 24 to form a planar U-shaped upper lever frame. Reference numeral 25 is a vertical upper drive cylinder attached between the rear end of the upper lever 23 and the upper overhang 19a of the front-rear sliding plate 19, and 27 is a pair of left and right lower levers extending substantially in the front-rear direction. A central fulcrum is pivotally supported on the inner side surface of the front and rear sliding plate 19 via a lateral pin, and front end portions of the front and rear portions, which extend slightly downwardly, extend in parallel to each other slightly below the filter paper restraining bar 24 in the left-right direction. The lower levers 27, 27 are fixed to both ends of the chuck mounting bar 2
The lower lever frame is formed in a U-shape in plan view by being integrated with the lower lever frame 8. Reference numeral 29 is a vertical lower drive cylinder attached between the rear end of the lower lever 27 and the lower overhang 19b of the front-rear sliding plate 19.

Here, a plurality of chucks 30 with spikes are provided on the chuck mounting bar 28 at appropriate intervals so as to project upward through the respective mounting pieces, while the lower surface of the filter paper restraining bar 24 is provided with the upper end of each chuck 30. Small holes 24a (FIG. 2) into which the upper ends of the small spikes 30a projecting from the center enter are arranged, and a left and right guide plate 24b extending in a slightly upward slope at the front and rear ends is arranged in parallel at the front end. . An upper end member 30b having a small spike 30a protruding from the center of a flat circular surface is coaxially attached to the upper end of the chuck 30 via a spring.

A plurality of reference numerals 32 are arranged in the left-right direction over the upper surface of the front half of the elevator frame 8 at equal intervals in the left-right direction, and are arranged in parallel in the left-right direction at substantially the same level as the upper end surface of the endless chain 21, and the front ends are inclined slightly downward. Shaped tray, which penetrates between the adjacent trays 32, 32 to form the chuck 3
0 is arranged so that it can be moved horizontally. Here, a rotary cutter 34, which will be described later, is provided at a portion near the front end of each tray 32.
Groove 3 extending in the left-right direction for the lower end of the blade to pass
2a is formed (FIG. 3). As shown in FIGS. 1 and 2, 34 is directly below the left and right sides near the front end of the elevator frame 8,
The guide rail 3 is a rotary cutter that cuts the filter paper while moving along the lower edge of the guide rail 35 in the left-right direction.
5 is suspended from the elevator frame 8 via a pair of left and right drive cylinders 35a. Reference numeral 38 denotes a sheet discharge roller conveyor which is disposed at the rear end of the left-right moving table 13 and is obliquely installed via a drive cylinder 39 so that the rear end has a slight downward slope. A brush 40 is provided. 41 is a motor for driving the conveyor belt.

In such a structure, first, the end side of the filter paper pulled out from the first-stage filter plate has the concave groove 32 of the tray 32.
In the position a, the contraction of the lower drive cylinder 29 (FIG. 4) causes the lower lever 27 to tilt counterclockwise around the fulcrum and the chuck attachment bar 28 attached to the front end to move upward. At the same time, due to the synchronous contraction of the upper drive cylinder 25, the upper lever 23 tilts clockwise around the fulcrum, and the filter paper restraining bar 24 attached to the front end of the upper lever 23 moves downward, so that the end of the filter paper is restrained. The pressure is applied from above and below by the bar 24 and the chuck 30. As a result, the upper end spikes 30a of the plurality of chucks 30 simultaneously enter the small holes 24a of the filter paper restraining bar 24, and the flat upper surface of the chuck 30 and the flat lower surfaces of the small holes 24a facing the flat upper surface of the chuck 30 become the lower surface and the upper surface of the filter paper. The ends of the filter paper are firmly and firmly clamped by the elastic pressing force of the built-in spring. Therefore, the filter paper is smoothly and surely sent to the rear and stopped by the discharge stroke in which the motor 21d retracts the sliding plate on which the upper lever and the lower lever are pivotally supported via the endless chain 21.

When the filter paper meanders to the left or right during the discharge stroke, the left and right ends of the filter paper come into contact with one of a pair of left and right limit switches (not shown) to turn them on. As a result, the lateral movement table 13 corrects the meandering of the filter paper by appropriately laterally moving to the limit switch which is not turned on, so that the filter paper always moves parallel to the center line of the filter plate.

When the filter paper pulled out at the end of the paper discharge stroke is stopped, the guide rail 35 is moved downward from the upper position to the lower position by the driving cylinder 35a.
The rotary cutter 34 reciprocates once in the left-right direction along the guide rail 35 that has come to the lower position to quickly cut the filter paper into a predetermined length. The filter paper cut into a predetermined length is sent backward by the rotating brush 40 and the roller conveyor 38 and drops into the waste paper box below. In this way, when the pulling out and cutting of the first stage filter paper is completed, the ejecting device retracts by a certain distance by the operation of the front-rear moving table 9, and the elevator frame 8 reduces the speed reducer 4, the horizontal drive shaft 5, the bevel gear box 6, and the like. 6. The ball screw rods 2, 2 and the like automatically move down to the level of the second stage filter paper, and the forward / backward movement table 9 is operated again to move forward for a certain distance. When the filter paper is pulled out and cut, and thereafter, the filter papers of all the stages are similarly pulled out and cut, the elevator frame automatically returns to the first stage filter paper level.

[0020]

【The invention's effect】

(1) According to the invention of claim 1, since the upper and lower surfaces of the filter paper are automatically and securely sandwiched by a pair of upper and lower contact members with a contact area of an appropriate size, and then pulled out, Even if the filter paper has low mechanical strength, it can be reliably and quickly pulled out without being damaged. Further, since the automatic operation can be performed labor-savingly, the operation management becomes easy. (2) According to the second aspect of the present invention, the filter paper discharging device is sequentially moved from the upper stage to the lower stage, while the filter papers of the respective stages are sequentially discharged and then automatically returned to the upper stage, which is labor-saving. (3) According to the invention of claim 3, it is possible to automatically and quickly cut into an arbitrary length according to the thickness, flexibility and the like of the filter paper, so that the waste paper can be easily carried out and treated. (4) According to the invention of claim 4, even if the filter paper has a property of easily meandering, when it meanders, it is automatically corrected immediately so that the filter paper can always be pulled out to the correct position on the filter plate. It will be possible.

[Brief description of drawings]

FIG. 1 is an overall side view showing an embodiment of the present invention.

FIG. 2 is a front view taken along the line II-II of FIG.

FIG. 3 is a plan view taken along the line III-III in FIG.

4A and 4B are a perspective view and a partially enlarged view showing a structure of a peripheral portion of the front-rear sliding plate of FIG.

FIG. 5 is an overall assembly view of a conventional horizontal filter plate type filter.

[Explanation of symbols]

1; Fixed frame body, 1a; Strut, 2; Ball screw rod, 3; Bearing, 4; Worm reducer, 5; Horizontal drive shaft, 6; Bevel gear box, 8; Elevator frame, 8a; Ball nut,
9; front and rear moving table, 10; linear bearing, 1
1; drive cylinder, 13; left and right moving table, 14;
Linear bearing, 15; drive cylinder, 17; gate frame, 19; front and rear sliding plate, 19a; upper overhang, 19b; lower overhang, 19c; chain bracket, 19d; linear bearing, 21; endless chain, 21a, 21b, 21c; sprocket, 21d; motor, 21e; sprocket, 2
3; upper lever, 23a; small hole, 24: filter paper holding bar,
24a; small hole, 24b; guide plate, 25; upper drive cylinder, 27; lower lever, 28; chuck mounting bar, 29; lower drive cylinder, 30; chuck, 3
0a; small spike, 30b; upper end member, 32; tray,
32a; concave groove, 34; rotary cutter, 35; guide rail, 35a; drive cylinder, 38; roller conveyor, 39; cylinder, 40; rotary brush, 41; motor.

Claims (4)

[Claims] 1. A filter paper is pulled out to a destination from a plurality of filter paper rolls arranged in parallel from an upper stage to a lower stage, and after filtering between a pair of upper and lower filter plates, each filter paper is automatically discharged to the destination. In the filter paper withdrawing device of the horizontal filter plate type filter configured as described above, the front ends of the pair of left and right lower levers are fixed to both ends of the chuck mounting bar in the left-right direction, and the planar shape is a U-shape and is a fulcrum on the vertical vertical plane. The lower lever frame that tilts up and down around the upper and lower lever frames is juxtaposed above the lower lever frame, and the front ends of a pair of left and right upper levers are fixed to both ends of the filter paper holding bar in the left-right direction. None Upper lever frame that tilts around a fulcrum on a vertical vertical plane, a plurality of chucks that project from the upper surface of the chuck mounting bar at equal intervals and project small spikes in the center of the contact surface, and the filter paper restraining bar Underside of With a plurality of small holes respectively formed at positions facing the upper ends of the small spikes, the front and rear ends of the pair of upper and lower lever frames are synchronously opened and closed, and the stroke in the front-rear direction is performed to press and discharge the filter paper. After that, a filter paper discharging device for a horizontal filter plate type filter is provided, which is equipped with a filter paper discharging device for repeating the return stroke in which both the bars are opened and returning to the original position. 2. The filter paper discharging device according to claim 1, after discharging the filter paper of the upper stage, retreating a predetermined distance on the front and rear moving table and lowering by one step, and then moving forward again on the front and rear moving table to discharge the filter paper of the lower stage. The filter paper of the horizontal filter plate type filter characterized in that the filter paper discharge device is equipped with an elevating means of the discharge device for returning the filter paper discharge device to the position of the first stage filter paper after discharging all the filter paper Drawer device. 3. A rotary cutter is horizontally reciprocated along a horizontal guide rail that is vertically movable above and below the front end of a filter paper drawing device and automatically moves down to a predetermined level after a discharge stroke of the filter paper. 3. The filter paper withdrawing device for a horizontal filter plate type filter according to claim 2, further comprising an automatic filter paper cutting device for cutting the filter paper in the width direction. 4. A pair of limit switches symmetrically arranged on the tray of the discharged filter paper at the left and right end positions of the filter paper, and the one limit which is turned on by meandering of the filter paper. 3. A filter paper meandering correction device for automatically moving an appropriate amount of a left-right movement table for mounting and supporting the tray to the opposite side of the turned-on limit switch in association with the switch. Alternatively, the filter paper withdrawing device of the horizontal filter plate type filter according to claim 3.