JP2002273109A - Filter press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter press capable of reducing the number of parts and a manufacturing cost, being excellent in workability, and increasing filtering efficiency to a large extent by collectively attaching a filter plate moving block (filter plate drawing mechanism) and a filter cloth shaking device to one unit. SOLUTION: A drive gear 24, a reversible motor 25 for driving the same and a filter plate moving block 30 equipped with a filter plate return pawl 32 are attached to one leg part 11a among both left and right leg parts 11a and 11a of the gate-shaped moving body 11 of the filter press and the rack 23 meshed with the drive gear 24 is provided to the rail 20 of the side plate 1 on the same side. The drive gear 24 is rotated forwardly or rearwardly by the operation of the reversible motor 25 to move the gate-shaped moving body 11 forwardly or rearwardly and filter plates 2 are opened one by one by the action of the filter plate return pawl 32 of the filter moving block 30 integrated with the gate-shaped moving body 11 and the cake adhering to the filter cloths 4, 4 covering both front and rear filtering surfaces of each of the filter plates 2 is revolved by the vibration caused by the operation of the filter cloth vibrator 50 provided to the gate-shaped moving body 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter press, and more particularly to a filter press provided with a self-propelled portal moving body.

[0002] There are two types of filter press: a single type in which only a filter plate is arranged, and a double type in which a filter plate and a filter frame are alternately arranged. The present invention is applied to both types. . Therefore, in this specification, the term “filter plate” includes not only a filter plate but also both a filter plate and a filter frame.

[0003]

2. Description of the Related Art Conventionally, a filter press has a large number of filter plates which are slidably and suspendedly held on left and right side plates via respective hooks, and a filter plate pulling device attached to the left and right side plates. It had a mechanism and a movable body having a filter cloth vibrating device at the top and a gate-shaped movable body as viewed from the front which was slidable.

[0004] After completion of the press filtration by the filter press, it is necessary to successively pull back the filter plates one by one in order to remove the cake remaining on the filter cloth. It is performed by rotating the endless chain and operating the filter plate retraction claw of the filter plate pulling mechanism interposed in the middle of the endless chain. In this case, the rotation direction of the endless chain each time one filter plate is pulled back Was converted.

[0005] By the operation of the filter plate pulling mechanism, the filter plates are opened one by one rearward, and at this time, the filter cloth hanging rods at the upper end of the filter cloth opposing each other are pulled out inside, and both filter cloths are separated. Seen from the side, it was inclined in a substantially C shape. At this time, the gate-shaped moving body is positioned at the center between the two opened filter plates, and the left and right ends of the filter cloth hanging rod at the upper end of the filter cloth facing each other are provided in the portal-shaped moving body. The cake (filtration cake) was beaten off by the vibrating hammer of the filter cloth vibrating device to be shaken off and removed. Then, the next filter plate is pulled back and opened rearward by the operation of the filter plate pulling mechanism, and similarly, every time the filter plate is opened, the above-mentioned cake drop-off operation is automatically and repeatedly performed. I was

[0006]

However, in the above-mentioned conventional filter press, since the filter plate pulling mechanism and the portal-type moving body provided with the filter cloth vibrating device are provided as separate units, the filter press is not provided between the two units. Adjustment was required. The filter plate pulling mechanism includes an endless chain formed in an endless manner through the filter plate pulling mechanism in the middle, a pair of front and rear chain wheels around which the winding portion of the endless chain is wound, and a pivot of the chain wheel. And an intermediate chain wheel, which is provided coaxially with one of the pivots and the driving force is transmitted from a motor via a transmission chain, such a filter plate traction mechanism is provided on both left and right sides of the filter press. It requires a very large number of parts, which results in high manufacturing costs. In addition, there is a problem in that both the right and left sides of the filter press require labor such as adjustment of so-called tension of the endless chain of the filter plate pulling mechanism.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art, and to collectively attach a filter plate moving block (filter plate pulling mechanism) and a filter cloth vibrating device to one unit of a double column moving body. This eliminates the need for adjustment between the two units of the filter plate traction mechanism and the filter cloth vibrating device as in the past, and requires only a small number of parts. It is only necessary to provide it on one of the two sides, so the number of parts can be greatly reduced, the manufacturing cost can be reduced, and the tension of the endless chain of the conventional filter plate pulling mechanism can be adjusted. An object of the present invention is to provide a filter press having a self-propelled portal moving body, which can save labor, is extremely excellent in workability, and can greatly increase filtration efficiency.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a multiplicity of filter plates which are slidably and suspendedly held on left and right side plates via respective hanging hands. ,
A filter press having a filter cloth vibrating device at the top and a gate-shaped moving body as viewed from the front, which is slidable back and forth along rails provided on the left and right side plates, A drive gear and a reversible motor for driving the drive gear and a filter plate moving block having a filter plate pull-back claw are attached to one of the legs, and a drive gear is mounted on the rail of the side plate on the same side. A meshing rack is provided, and the drive gear is rotated forward or backward by the operation of the reversible motor, and the gate-shaped moving body moves forward or backward, and the filter plate of the filter plate moving block integrated with the gate-shaped moving body. The filter plates are opened one by one by the action of the pull-back claw, and the cake adhering to the filter cloth covering both the front and rear filtering surfaces of each filter plate is vibrated by the operation of the filter cloth vibrating device provided in the portal moving body. To be removed It is a symptom.

It is preferable that the rack that meshes with the drive gear provided at the lower edge of the side plate is mounted with its teeth facing downward. This is because this can prevent the cake from biting into the teeth of the rack when the filter plate is opened.

[0010]

Next, an embodiment of the present invention will be described with reference to the drawings.

In this specification, front and rear and left and right refer to FIG. 2, the front means the right side of FIG. 2, ie, the first head side, the rear means the same left side, ie, the rear head side, and the left and right refer to the front. And

FIGS. 1 to 7 show the structure of each part of the filter press, and FIG. 8 shows a time chart of the movement of the filter plate and the operation of the filter cloth vibrating device.

First, referring to FIGS. 1 to 5, a large number of filter plates (2) are provided on the left and right side plates (1) (1) passed to a first head and a rear head (not shown) of a filter press. It is slidably suspended via the lifting hands (3) (3), and is held by the guide rails (20) (20) of the left and right side plates (1) (1).
A portal-shaped moving body (11) having a filter cloth vibrating device (50) on the top is held by rollers (21) and (21) so as to be movable back and forth as viewed from the front.

A filter cloth (4) covering both front and rear filtration surfaces of each filter plate (2)
(4) is held on each filter plate (2). That is, the lower edges of both filter cloths (4) and (4) before and after each filter plate (2)
(2) Attached to the lower edge of
(4) The upper edge of (4) is suspended by one common filter cloth suspension rod (5). In addition, through-holes (not shown) provided at the left and right ends of the filter cloth hanging rod (5) are provided with rising cores composed of long bolts standing at the left and right ends of the upper edge of each filter plate (2). The rods (7) and (7) are inserted respectively, and these core rods
(7) The filter cloth suspension rod (5) is supported so as to be constantly urged upward by the elastic force of the coil springs (6) (6) fitted over the (7).

The gate-shaped moving body (11) connects the front and rear frames (12) and (13), which are gate-shaped when viewed from the front, and the right and left vertical portions (12a) and (13a) of the front and rear frames (12) and (13). Left and right crossbars (14) (14),
The upper and lower frames (12) and (13) are constituted by upper horizontal rails (15) connecting the upper horizontal portions (12b) and (13b) of each other. Then, the left and right vertical parts (12a) (13) of the gate-shaped front and rear frames (12) (13)
Rollers at the lower end of a) via arms (22) and (22) respectively
(21) and (21) are attached, and these rollers (21) and (21) are supported by rails (20) and (20). In addition, portal-shaped moving object (11)
The right leg (11a), and more specifically, the front and rear frames (12)
Right horizontal rail (14) connecting left and right vertical parts (12a) (13a) of (13)
, A reversible motor (25) and a speed reducer (26) are mounted via a bracket (27), and a drive gear (2) is attached to a pivot of the speed reducer (26).
4) is mounted, and a rack (23) meshing with the drive gear (24) is provided on the lower edge of the rail (20) of the right side plate (1) with its teeth facing down over the entire length of the rail (20). I have.

Accordingly, the operation of the motor (25) causes the reduction gear
The drive gear (24) rotates in the forward or reverse direction via (26), and the drive gear (24) meshes with the rack (23) at the lower edge of the rail (20) of the right side plate (1). , After all, portal-shaped mobile (11)
Is capable of self-running in the front-rear direction along the left and right side plates (1) and (1) by the rotation of the drive gear (24) by the operation of the motor (25).

The right vertical portion (1) of the gate-shaped front frame (12)
At the front and back of the middle part of the height of 2a), hang the filter plate (2)
(3) A pair of front and rear filter plate detection sensors (17) (1)
8), and these sensors (17) and (18) are attached to the front and rear horizontal bars (16) and (16) fixed to the right vertical section (12a) of the front frame by mounting rings (19) and (19), respectively. The detection end is a filter plate
(2) It is installed facing the lifting hand (3) side.

The left and right legs (11a) (11a) of the gate-shaped moving body (11),
More specifically, the left and right vertical parts (12a) (12a) of the front frame (12)
Filter plate moving blocks (30) and (30) are provided at the lower end of the roller so as to be positioned above the rollers (21) and (21) via the arms (22) and (22), respectively.

The same filter plate moving block (30) is disposed on both left and right sides of the filter press so as to face each other, and only one of them will be described below.

As shown in detail in FIGS. 5 to 7, the filter plate moving block (30) includes front and rear vertical pillars (31a) and (31b) which are arranged opposite to each other at a predetermined interval. Connect the lower ends together and the left or right vertical part (12a) of the front frame (12)
(12a) The bottom connecting wall (28) protruding from the arm (22) at the lower end and the lower part of the front and rear vertical pillars (31a) (31b) are side plates.
(1) A side connection wall (47) connected on the side.

The bolt connecting slots (29) and (29), which are long in the front-rear direction, are formed in the bottom connecting wall (28) of the filter plate moving block (30) near the front and rear ends on the side plate (1) side. The front ends of a pair of front and rear bolts (44) and (44) vertically inserted into these long holes (29) and (29) from below are front and rear vertical pillars (31a) and (31).
b) is screwed into the screw hole at the lower end,
a) (31b) and the bottom connecting wall (28) are connected. Also, at the front and rear ends of the bottom connecting wall (28), the tip ends of small diameter bolts (45) and (45) for stoppers screwed horizontally from the front and rear outer sides toward the long holes (29) and (29). The front and rear bolts (44) and (44) and the one piece with the front and rear bolts (44) and (44) The movement of the front and rear vertical columns (31a) (31b) is prevented, and the column is firmly fixed.

An elongated hole for inserting a bolt in the bottom connecting wall (28).
(29) According to (29), the front and rear vertical pillars (3
1a) (31b) installation position can be adjusted back and forth,
It is possible to adjust the distance between the front and rear vertical pillars (31a) and (31b), and thus the attachment position of the filter plate pull-back claw (32) described later.

The small-diameter bolts (45) and (45) for the stopper include:
Double nuts (46) and (46) are screwed respectively,
The double nuts (46) and (46) are firmly brought into contact with the front and rear end surfaces of the bottom connecting wall (28), thereby loosening the small bolts (45) and (45) for the front and rear stoppers, The movement of the bolts (44) (44) and the front and rear vertical pillars (31a) (31b) is prevented.

The side connecting wall (47) of the filter plate moving block (30)
A filter plate return claw (32) is swingably attached to a portion near the rear end by a pivot (33) composed of a pin with a head. A downward projection (38) having a through hole is provided at the lower end of the filter plate withdrawal claw (32) that has passed the pivot (33) downward, whereas
A front projection (39) having a through hole is provided in the rear vertical column (31b) of the filter plate moving block (30), and these projections (38) (39)
A tension spring (37) is wound around the filter plate, and the action of the tension spring (37) urges the filter plate retraction claw (32) so as to be always upright. At the rear end of the filter plate pull-back claw (32), a rear contact edge that comes into contact with the filter plate
(32a) is provided on the upper edge of the filter plate pull-back claw (32) for passing the lower side of the hanger (3) of the filter plate (2) when the claw (32) is in the down state. Front-facing upper inclined edge (32b)
The front end of the filter plate pull-back claw (32) is further provided with a front contact edge (abutting vertically) against the rear side surface of the front vertical column (31a) of the moving block (30) in the upright state. 32c) is provided.

The front and rear vertical columns (3) of the filter plate moving block (30)
1a) To the upper end of (31b), a band-shaped filter plate pull-back claw pushing down member (40) is passed, and a long hole (41) (41)
The headed pins (42) and (42) attached to the front and rear vertical pillars (31a) and (31b) of the block (30) are loosely inserted, and the pushing-down member (40) moves the filter plate. The block (30) can be moved back and forth by the length of the long holes (41) and (41) in the longitudinal direction.

In the upper part of the filter plate retraction claw (32), a long hole (34) elongated in the longitudinal direction of the claw (32) and a large-diameter pin escape hole (35) connected to the lower end of the long hole (34). Correspondingly, a pin (43) made of a hexagonal headed bolt is protruded at a predetermined position of the filter plate retraction nail pushing member (40) at a predetermined position and projects toward the retraction claw (32). The claw (32) is provided so as to be inserted into the long hole (33). Under normal conditions, a large pin escape hole (3
The pin (43) is inserted through 5), and the pin escape hole (35) is sized to allow the rocking of the filter plate pull-back claw (32).

A first stopper on the first head side and a second stopper on the rear head side, which are respectively in contact with the front and rear ends of the member for pushing down the filter plate retraction claw (40), at both front and rear ends of the side plate (1). (Both not shown) are provided.

On the other hand, the upper horizontal rail (15) at the top of the gate-shaped moving body (11)
Is provided with a filter cloth vibrating device (50). Filter cloth vibrator (5
(0) is the hammer mounting member mounted on the upper horizontal rail (15)
A plurality of guide rods (52) are held on the (51) so as to be able to move up and down freely.
(56) A vibration hammer (53) having (56) is attached, and an air cylinder (54) is attached to its piston rod.
(55) attached with the piston rod
The lower end of (55) is connected to the center of the vibration hammer (53). An electromagnetic valve (57) for operating an air cylinder (54) and piping are provided on the upper horizontal rail (15) in front of the hammer mounting member (51) of the filter cloth vibrating device (50), and the hammer mounting member (5) is provided.
A filter regulator (58) is attached to the upper horizontal rail (15) on the rear side of 1). The operation (opening / closing) of the solenoid valve (57) causes the piston /
The rod (55) is moved in and out, and the vibrating hammer (53) moves up and down. At the same time, immediately hit the filter cloth hanging bar (5) on the upper part of the filter plate (2) just before the next plate opening to vibrate the cake adhering to the filter cloths (4) (4) of both filter plates (2) (2). To remove it.

Next, the operation of the filter press of the present invention will be described.

After the completion of the press filtration by the filter press, first, the loose head is pulled back to a predetermined position by retracting the piston rod of the cylinder, and the tightening force on all the filter plates (2) is loosened. At this time, the portal moving body (11) equipped with the filter cloth vibrating device (50) is on standby at the rear head side of the filter press.

Next, in order to remove the cake adhering to the filter cloth (4) mounted on the filtration surface of the filter plate (2), the filter plates (2) are removed one by one according to a time chart shown in FIG. Pull back sequentially.

First, the position of the portal movable body (11) waiting on the rear head side is detected by a position detection sensor (LS3) provided on the rear head of the filter press.
The drive gear (24) rotates forward (rotates in the forward direction) via the speed reducer (26) by the operation of the motor (25), and the drive gear (24)
Is engaged with the rack (23) at the lower edge of the rail (20) of the right side plate (1), so that the portal-type moving body (11) and the filter plate moving block (30) integrated therewith have the left and right side plates (1). ) Self-propelled in the return direction (forward) along (1). The portal mobile body (11) reaches the first filter plate (2) to be opened, and the front filter plate detection sensor (LS1) of the mobile body (11) is connected to the first filter plate (2). When the side surface is detected, the timer (T1) is started, and after that, the motor (25) is stopped. During this time, the filter plate retraction claw (32) of the filter plate moving block (30) that moves together with the portal moving body (11)
The first filter plate (2) passes over the lower side of the hanger (3) while falling down, and rises up beyond the hanger (3). Portal type mobile
(11) and the filter plate moving block (30) stop there.

Next, a pause timer (TF) at the time of switching is started, and after the timer is up, the drive gear (24) rotates reversely (rotates in the reverse direction) via the speed reducer (26) by the operation of the motor (25).
Since the drive gear (24) meshes with the rack (23) at the lower edge of the rail (20) of the right side plate (1), the double column-shaped moving body (11) and the filter plate moving block ( 30) is the left and right side plate (1)
Self-propelled in the opening direction (rear) along (1). as a result,
The filter plate pull-back claw (32) hooks the handle (3) of the first filter plate (2) and returns the first filter plate (2) to the loose head which has already been retracted. The second filter plate (2) is opened. With the first filter plate (2) together with the portal mobile body (11)
Reaches the loose head, and this rear filter plate detection sensor
When (LS2) detects the side of the loose head, the timer (T
2) is started, and after that, the motor (25) is stopped.

Next, a pause timer (TF) at the time of switching is started, and after the timer is up, the drive gear (24) rotates forward through the speed reducer (26) by the operation of the motor (25), and the gate-shaped movement is performed. Body (11)
Self-propelled in the return direction (forward) along the left and right plates (1) and (1). The gate-shaped movable body (11) reaches the second filter plate (2) to be opened, and the front filter plate detection sensor (LS1) of the movable body (11).
Detects the side of the second filter plate (2), the timer (T
1) is started, and after that, the motor (25) is stopped. During this time, the filter plate pull-back claw (32) of the filter plate moving block (30) that moves together with the portal moving body (11) is attached to the second filter plate.
It passes over the lower side of the hanger (3) of (2) while falling down, and rises up beyond the hanger (3). The portal moving body (11) and the filter plate moving block (30) stop there.

At this time, the gate-shaped moving body (11) moves between the first filter plate (2) already opened on the loose head side and the second filter plate (2) immediately before opening. It is located in the center. The air cylinder (54) is operated by opening and closing the cylinder operating solenoid valve (57) of the filter cloth vibrating device (50), and the piston rod (55) of the air cylinder (54) is protruded downward or retracted, causing vibration. The hammer (53) is moved up and down, and the filter cloth striking pads (56) and (56) at the front and rear ends of the vibrating hammer (53) are moved forward and backward of the first and second filter plates (2) and (2). Filter cloth covering both sides
(4) The filter cloth hanging rods (5) and (5) hanging the filter cloth (4) are hit, and the cake attached to the surface of the filter cloth (4) (4) is dropped very quickly. By repeating the vibration operation several times, the cake attached to the filter cloths (4) and (4) is removed.

The air cylinder (54) of the filter cloth vibrating device (50) provided on the gate-shaped moving body (11) is operated to cause the piston rod (55) to protrude downward, so that the vibration hammer is provided.
With the drop of (53), the filter cloth hit pads on both front and rear ends (56) (56)
When the filter cloth hanging rods (5) and (5) of the first and second filter plates (2) and (2) after opening are hit from above, both filter cloth hanging rods (5) and (5) As a result, the filter cloths (4) and (4) covering both the front and rear filtration surfaces of each filter plate (2) only loosen from the stretched state and adhere to both filter cloths (4) and (4). The cake does not fall so much. However, subsequently, the piston rod (55) is retracted by the operation of the air cylinder (54), and the vibration hammer
When (53) rises, both filter cloth suspension rods (5) and (5) rise at a stretch by the resilience of coil springs (6) and (6), covering both front and rear filtration surfaces of each filter plate (2). The filter cloths (4) and (4) are strongly pulled upward and become tensioned, and the cake adhering to both filter cloths (4) and (4) is suddenly blown off by the reaction and falls down very quickly to be removed. This vibration operation is repeated several times.

As described above, the filter cloth vibrating device (50) provided on the portal moving body (11) allows the filter cloth hanging rod (5) of the filter plate (2) after the opening to be opened and the filter cloth hanging rod (5) immediately before the next opening. Since the filter cloth hanging rod (5) of the filter plate (2) is simultaneously struck together, the filter cloth vibrating device (50)
The operation of removing the cake can be performed extremely smoothly.

After the operation of removing the cake by the operation of the filter cloth vibrating device (50) as described above, it is confirmed by the sensor (LS7) that the vibration hammer (53) is at the raised position.
Then, a pause timer (TF) at the time of switching is started, and after the timer is up, the drive gear (24) is reversed through the reduction gear (26) by the operation of the motor (25), and the portal mobile body (11) and The filter plate moving block (30) integrated therewith travels in the opening direction (rearward) along the left and right side plates (1) and (1). As a result, the filter plate pull-back claw (32) hooks the hook (3) of the second filter plate (2), and the first filter plate (2) which has already retreated the filter plate (2). Then, the second filter plate (2) is opened. This second
Together with the second filter plate (2), the portal mobile unit (11) reaches the first filter plate (2) which has already been retracted, and the rear filter plate detection sensor of the portal mobile unit (11) When (LS2) detects the side surface of the first filter plate (2) which has already receded, the timer (T2) is started, and after that, the motor (25) is stopped.

Next, a pause timer (TF) at the time of switching is started, and after the timer is up, the drive gear (24) rotates forward through the speed reducer (26) by the operation of the motor (25), and the portal movement is performed. Body (11)
Self-propelled in the return direction (forward) along the left and right plates (1) and (1). The portal mobile body (11) reaches the third filter plate (2) to be opened, and the front filter plate detection sensor (LS1) of the mobile body (11).
Detects the side of the third filter plate (2), the timer (T
1) is started, and after that, the motor (25) is stopped. During this time, the filter plate pull-back claw (32) of the filter plate moving block (30) that moves together with the portal moving body (11) is connected to the third filter plate (2).
Of the hanging hand (3) while falling down, and stands up beyond the hanging hand (3). The portal moving body (11) and the filter plate moving block (30) stop there.

At this time, the gate-shaped moving body (11) is positioned between the second opened filter plate (2) on the loose head side and the third filter plate (2) immediately before opening. It is located in the center. Thereafter, the filter cloth tapping pads (56) (56) at the front and rear ends of the vibrating hammer (53) are similarly moved by the operation of the filter cloth vibrating device (50).
Filter cloth (4) covering both front and rear sides of the third and third filter plates (2) (2)
The vibrating operation is repeated several times by hitting the filter cloth suspending rods (5) and (5) suspending the filter cloth (4).
The cake attached to (4) is removed.

In the same manner as described above, the filter plates (2) are sequentially pulled back one by one, and every time the filter plate (2) is opened, the work of removing the cake by vibration is automatically and repeatedly performed. 4) (4) The cake adhering to the surface is removed.

Then, the gate-shaped moving body (11) is connected to the motor (25)
The drive gear (24) moves forward in the return direction (forward) due to the operation of, reaches the final filter plate (2) on the first head side, and the front filter plate detection sensor (LSF) of the moving body (11) is When the last side of the filter plate (2) is detected, the timer (T1) is started, and after that, the motor (25) is stopped. During this time, the filter plate moving block (3
The filter plate pull-back claw (32) of (0) passes under the hanging part (3) of the final filter plate (2) while falling down, and tries to rise up beyond the hanging part (3). The pushing member (40) provided in the block (30) hits a stopper (not shown) on the first head side, and the pushing member (40) moves backward by a required length, whereby the pushing member (30) is moved. The pin (43) consisting of a hexagonal head bolt provided at a predetermined location in () is transferred from the large-diameter pin escape hole (35) of the filter plate pull-back claw (32) to the long hole (34) connected to it. As a result, the filter plate pullback claw
(32) is forcibly pressed down, and the gate-shaped moving body (11) and the filter plate moving block (30) stop.

In this state, the work of removing the cake adhering to the filter cloths (4) and (4) of the final filter plate (2) and the filter plate (2) of the immediately preceding and last opened plate is performed. After the end, a pause timer (TF) at the time of switching is started.After the timer is up, the drive gear (24) is driven through the reduction gear (26) by the operation of the motor (25).
The portal moving body (11) and the filter plate moving block (30) integral therewith move backward along the left and right plates (1) and (1), but the filter plate moving block (30) The filter plate pullback claw (32)
Since the pin (43) made of a hexagonal head bolt provided at a predetermined position of the pushing-down member (40) remains down, the final filter plate (2) on the first head side is not pulled back, and the filter plate is not pulled back. The filter pull-back claw (32) of the moving block (30) passes under the hanger (3) of all the already opened filter plates (2), these filter plates (2) and the loose head. After that, the gate-shaped moving body (11) and the filter plate moving block (30) integrated therewith reach the rear head.

When the gate-shaped moving body (11) reaches the rear head, the rear end of the pushing-down member (40) of the filter plate moving block (30) hits the second stopper of the rear head, and the pushing-down member (40). Is moved forward by a required length, so that the filter plate retraction claw (32) is held in an upright state by the action of the tension spring (37). As described above, when the gate-shaped moving body (11) reaches the rear head and the moving body detection sensor (LS3) provided on the rear head detects the side surface of the moving body (11), the motor (25) is stopped. , Portal moving body (11) and filter plate moving block (30) integral therewith
Returns to the start position on the rear head side. Therefore, during the next filtration operation, the portal-shaped moving body (11) with the filter plate moving block (30) is not obstructed.

In the same manner, the filtering operation by the filter press is repeated.

According to the above-described filter press of the present invention, the filter plate moving block (30) and the filter cloth vibrating device (50) can be collectively attached to one unit of the portal moving body (11). This eliminates the need for the conventional adjustment between the two units and reduces the number of parts. In addition, it is only necessary to provide the drive mechanism for the gate-shaped moving body (11) on one of the left and right sides of the filter press. Therefore, the number of parts can be greatly reduced, and the manufacturing cost can be reduced.

Further, according to the present invention, the portal mobile body (11)
The filter plate vibrating device (50) provided in
Since the filter cloth hanging rod (5) of (2) and the filter cloth hanging rod (5) of the filter plate (2) immediately before the next opening are simultaneously struck together, the filter cloth vibrating device (50) is used. The cake removal operation by the operation can be performed very smoothly.

According to the above embodiment, the rack (23) provided at the lower edge of the side plate (1) and meshing with the drive gear (24) is
The filter plate is installed with its teeth facing down.
It is possible to prevent the cake from being caught in the teeth of the rack (23) when the plate is opened in (1).

Further, the filter plate pull-back claw (32) of the filter plate moving block (30) pulls back the filter plate (2), and the sensor (LS1) (LS
2) By combining the stop action of the reversible motor (25) by (LS3) (LSF) (LS7) and the timer (T1) (T2) (TF),
Compared with the conventional filter plate pulling mechanism equipped with a stop claw and a filter plate retraction claw, not only the structure of the filter plate moving block (30) part is simplified, but also the shock at the time of stopping the filter plate moving block (30). There is an advantage that the filter plate (2) can be absorbed smoothly and the opening operation of the filter plate (2) can be performed smoothly.

In the above embodiment, each filter plate
Filter cloths (4) and (4) covering both front and rear filtration surfaces of (2)
(2), the upper edges of both front and rear filter cloths (4) and (4)
Suspended by one common filter cloth suspension rod (5),
The filter cloth suspension rod (5) is supported by the resilient force of the coil springs (6) and (6) so as to be constantly urged upward, and the portal moving body (11)
The filter plate vibrating device (50) provided in
A method of removing the cake by simultaneously hitting the filter cloth hanging bar (5) of (2) and the filter cloth hanging rod (5) of the filter plate (2) immediately before the next opening, The present invention is not limited to this.
In addition, although not shown, for example, as in the conventional case, the left and right ends of the filter cloth hanging rod at the upper end of the filter cloth covering the front and rear filtering surfaces of each filter plate are respectively suspended by coiled suspension springs. The left and right ends of the filter cloth hanging rods facing each other between the filter plates adjacent to each other are connected by a connection chain of a predetermined length, and after the end of the squeezing filtration work of the filter press, In order to remove the cake in the filter chamber between the filter plates adjacent to each other, when the filter plates are opened one by one to the rear of the required distance, the length of the connection chain becomes the length of the open filter plate between the opposed filter plates. Since it is shorter than the interval, the filter cloth hanging rods at the upper end of the filter cloth facing each other are pulled out inward, and both filter cloths are inclined in a substantially C shape as viewed from the side,
The filter hammer of the filter cloth vibrator provided on the portal moving body hits the left and right ends of the filter cloth hanging rod at the upper end of the filter cloth facing each other, and removes the cake. , And are similarly applied.

In the illustrated filter press, the installation of the filter cloth cleaning device is omitted, but in some cases, the filter cloth cleaning device is mounted on the gate-shaped moving body (11) together with the filter cloth vibration device (50). Sometimes.

[0052]

As described above, the filter press provided with the self-propelled portal moving body according to the present invention has a driving gear and a driving gear mounted on one of the left and right legs of the portal traveling body. A reversible motor that drives this, a filter plate moving block with a filter plate pullback claw are attached, and a rack that meshes with the drive gear is provided on the rail of the side plate on the same side, and the drive gear is operated by the operation of the reversible motor. The gate-shaped moving body is moved forward or backward by being rotated forward or backward, and the filter plates are opened one by one by the action of the filter plate pull-back claw of the filter plate moving block integrated with the portal-shaped moving body. The cake adhering to the filter cloth covering both the front and rear filtration surfaces of the filter plate is removed by the vibration caused by the operation of the filter cloth vibrator provided in the portal moving body. Board moving block and filter The vibrating device can be collectively attached to one unit composed of a self-propelled gate-shaped moving body, and a unit of a moving body with a filter cloth vibrating device and a unit of a filter plate pulling mechanism by an endless chain as in the related art. 2
There is no need to adjust between the two units, and it is only necessary to provide the drive mechanism for the gate-shaped moving body on one of the left and right sides of the filter press. Therefore, the number of parts can be significantly reduced, The cost is low,
The labor of adjusting the tension of the endless chain of the conventional filter plate pulling mechanism can be omitted, the workability is extremely excellent, and the effect that the filtration efficiency by the filter press can be greatly increased is exhibited.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part of a filter press showing an embodiment of the present invention.

FIG. 2 is an enlarged right side view of the main part.

FIG. 3 is an enlarged right side view of a filter plate moving block portion in which the essential part is further enlarged.

FIG. 4 is an enlarged sectional view of a main part of FIG.

FIG. 5 is an enlarged right side view of a filter plate moving block portion of FIG. 3;

FIG. 6 is a partially cutaway enlarged plan view of a filter plate moving block portion of FIG. 5;

FIG. 7 is an enlarged vertical sectional view of the filter plate moving block portion.

FIG. 8 is a time chart of the opening operation of the filter plate by the filter press and the cake removing operation by the filter cloth vibrating device according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side plate 2 Filter plate 3 Hanger 4 Filter cloth 11 Gate-shaped movable body 11a Leg 20 Rail 23 Rack 24 Drive gear 25 Reversible motor 30 Filter plate moving block 32 Filter plate pull-back claw 40 Filter plate pull-back claw pushing member 50 Filtration Cloth vibration device 53 Vibration hammer 54 Air cylinder

Claims (1)

[Claims] 1. Hangers (3) and (3) on left and right side plates (1) and (1), respectively.
A large number of filter plates (2) slidably and suspendedly held through a filter cloth vibrating device (50) on the top and provided on the left and right side plates (1) (1) The right and left legs (11a) of the gate-shaped moving body (11) are provided in a filter press including a movable body (11) that is slidable back and forth along the rails (20) and (20). ) (11a), one of the legs (11a)
In addition, a drive gear (24) and a reversible motor (25) for driving it
And a filter plate moving block (30) having a filter plate pull-back claw (32), and a rack (23) meshing with the drive gear (24) is provided on the rail (20) of the side plate (1) on the same side. The drive gear (24) is rotated forward or backward by the operation of the reversible motor (25), and the portal mobile body (11) moves forward or backward, and is integrated with the portal mobile body (11). The filter plate (2) is opened one by one by the action of the filter plate retraction claw (32) of the filter plate moving block (30), and the filter cloth (4) covering both front and rear filtration surfaces of each filter plate (2).
(4) A filter press, wherein cake adhering to (4) is removed by vibration caused by operation of a filter cloth vibrating device (50) provided in the portal moving body (11).