JP3250593B2 - Driving device for filter cloth in filter press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method in which a large number of filter plates arranged in parallel are opened one by one or every several sheets, and a filter cloth is sequentially moved up and down between the opened filter sheets to form a cake formed between the filter cloths. The present invention relates to an improvement of a driving device for a filter cloth in a filter press for peeling off a filter.

[0002]

2. Description of the Related Art Conventionally, there has been known an apparatus which opens a large number of filter plates one by one or every several sheets and vibrates a filter cloth to peel off a cake. And, the application of our company, Tokuhei 2-126
In Japanese Patent Publication No. 03, the filter cloth driving device is mounted on a movable carriage, the support bar of the filter cloth is gripped by claws provided on a cylinder, and the filter cloth is lowered while operating the cylinder to peel off the cake. Then, a device has been proposed in which the filter cloth that has returned to the home position is held by claws hanging down from the mast above the filter plate.

[0003]

However, in the above-mentioned apparatus for vibrating the filter cloth, the unfilterable stock solution is pressed into the filter press for a long time, and the separated cake is separated from the filter cloth. It was difficult to do. And, in the device for traveling the filter cloth described above, it is extremely effective to discharge cake having poor releasability formed between the filter cloths, but the cylinder for traveling the filter cloth becomes longer. ,
A large space was required above the filter press.
Also, it was difficult to hold the swinging upper filter cloth support bar with claws hanging down from the mast on the upper part of the filter plate. In view of the above, the present invention provides a drive device for a filter cloth in which a device suitable for long-time filtration of the filter press is improved.

[0004]

That is, according to the structure of the present invention, a large number of filter plates arranged in parallel with the guide rail can be opened one by one or every several sheets, and a pair of filter cloths is placed between these filter plates. The upper end of the filter cloth is connected to a chain wrapped around a sprocket above the filter plate, and the lower end of the filter cloth is wound around a guide roll provided below the filter plate,
In a filter press connected to the other end of the chain and hung so that the filter cloth can travel , along the guide rail ,
A filter cloth drive is mounted on a trolley that can travel freely.
Is perpendicular to the guide rail on the cylinder fixed to the trolley
To the end of the drive shaft.
Head with latch and sprocket fastened
A clutch is provided at one end of the shaft.
The filter cloth is moved up and down by engaging the clutch
Those who like to make.

[0005] In addition to the filter cloth traveling device, a brake is resiliently brought into contact with the head shaft to which the sprocket is fixed, and a cylinder for disengagement from the head shaft is provided to face the brake. When the drive is connected to the clutch of the sprocket, the cylinder is operated to release the brake from the head shaft. To describe the brake in more detail, the brake may be rotatably disposed, a recess provided in the brake may be resiliently pressed against the head shaft, and a cylinder may be provided to disengage the brake from the head shaft. Alternatively, an openable / closable holding portion may be provided on the brake, and the headshaft may be held by the holding portion, and a cylinder for releasing the holding portion of the brake from the headshaft may be provided. .

[0006]

The present invention is constructed as described above. Upon discharging the cake formed between the filter plates, the filter plates are opened one by one or every several sheets, and a filter cloth driving device is mounted. The carriage is moved to a predetermined position on the opened filter plate. Next, the drive is moved in the direction of the filter plate, or the clutch of the drive is moved, and the clutch provided at one end of the sprocket is engaged with the clutch of the drive to start the drive. The cloth can be raised and lowered. In the case of a device with a brake abutting on the head shaft, the drive unit is connected to the sprocket, and at the same time, the cylinder opposing the brake abutting against the head shaft is actuated. If the piston is used to release the brake from the head shaft, the brake on the head shaft is released and the filter cloth can be raised and lowered. When the filter cloth is returned after the cake is peeled, the brake will elastically contact the head shaft if the piston of the cylinder is contracted, the rotation of the head shaft is regulated, and the filter cloth suspended between the filter plates naturally It does not deviate from the filtration position.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
In FIG. 1, reference numeral 1 denotes a frame, reference numeral 2 denotes a guide rail spanned between the frames 1.1, reference numeral 3 denotes a number of filter plates parallel to the guide rail 2 so as to be openable and closable, and a known filter plate feeder. The plate is opened one by one or every several sheets. As shown in FIGS. 2 and 3, a pair of filter cloths 4.4 is disposed between the filter plates 3.3. As shown in FIG.
A head shaft 5.5 having two sprockets 6 attached to both ends thereof is rotatably supported on the head metal 5.5, and is guided below the filter plate 3. A roll 8 is provided. The upper ends of the pair of filter cloths 4.4 arranged between the filter plates 3.3 are joined to each other and supported on the upper support bar 9 of the filter cloth 4, and the lower end of the filter cloth 4 is 7. Guide rolls arranged below plate 3
8, each is wound. On the other hand, chains 10 are wound around the sprockets 6, respectively. One end of the chains 10 is connected to both ends of the support bar 9, and the other ends of the chains 10 are front and rear guide rolls 8. 8 is connected to both ends of the filter cloth 4.4 wound around,
The filter cloth 4.4 is suspended as shown in FIG. When the head shaft 7 is rotated, the filter cloth 4 suspended from the chain 10 moves up and down.

Next, a filter cloth 4.4 suspended between the filter plates 3.3.
4 will be described in detail with reference to FIG.
Reference numeral 1 denotes a driving machine, which is disposed on a carriage 12 that can travel along the guide rails 2. The driving machine 11 is connected to a cylinder 13 fixed to the carriage 12, and when the cylinder 13 is operated, the driving machine 11 The filter moves along the width direction of the filter plate 3. The drive shaft of the drive unit 11 is disposed at the same level as the head shaft 7, and a clutch 14 is provided at the tip of the drive shaft of the drive unit 11. Move the carriage 12 to a predetermined position of the filter plate 3.3 that Kaihan, when actuating the cylinder 13 to move the mover 11 halo plate 3 direction, provided at the end of the drive unit 11 side of the head shaft 7 The clutch 15 is engaged. Therefore, it is only necessary to slightly move the driving device 11 with the short cylinder 13, and the driving device can be made compact. Then, when the driving device 11 is started, the head shaft 7 rotates, the filter cloth 4.4 is suspended by the chain 10 and moves up and down, and the cake formed between the filter plates 3.3 becomes the filter cloth 4. The cake is discharged from the filter cloth 4 when the guide roll 8.8 makes a U-turn. The drive unit 11 may be fixed to the carriage 12 and the clutch 14 provided on the drive shaft of the drive unit 11 and the clutch 15 provided at the end of the head shaft 7 may be engaged as an electromagnetic clutch. . In addition, the driving machine 11
May be an electric motor or a hydraulic motor.

Reference numeral 16 denotes a brake, which is rotatably disposed on the head metal 5 supporting the head shaft 7. At the tip of the brake 16, a concave groove 16a is provided as shown in FIG. 6, and as shown in FIGS. 5 and 6,
A spring 17 urges the head shaft 7 from below to resiliently contact the head shaft 7. Normally, brake 1
The head shaft 7 is pressed so as to be sandwiched between the bottoms of the concave grooves 16a of the head 6 so that the head shaft 7 does not rotate due to the weight of the filter cloth 4. On the other hand, a cylinder 18 as shown in FIG. 4 is provided on a frame 18 provided above the carriage 12 on which the filter cloth driving device is mounted, opposite to the tip of the concave groove 16a which holds the head shaft 7. It is set up. When the piston 19a of the cylinder 19 is extended and the brake 16 is pushed back, as shown in FIG. 7, the head shaft 7 is released from the concave groove 16a so that the head shaft 7 can rotate. The brake 16 shown in FIG. 8 is another embodiment, in which the head shaft 7 is resiliently gripped in a normal state by a holding portion 16 b constituted by a pair of leaf springs, and a protrusion provided on a piston 19 b of a cylinder 19. The holding portion 16b is pushed and spread by the raised portion, and the brake 16 is released. When the driving device 11 is linked to the head shaft 7, the cylinder 19 is operated, and at the same time, the brake 16 is released from the head shaft 7 and the driving device 11 is started to allow the filter cloth 4 to run. When the filter cloth 4 is returned and the driving device 11 is separated from the head shaft 7, the piston 19a of the cylinder 19 is contracted, and the brake 16 is pressed against the head shaft 7. At this time, the brake 16 for preventing the rotation of the head shaft 7 is applied to the head shaft 7.
Is provided on the head metal 5 of the filter plate 3 for supporting the brake, and the cylinder 19 for releasing the brake is disposed on the carriage 12 on which the drive unit 11 is mounted. Things. Reference numeral 20 denotes the filter cloth 4.
Reference numeral 21 denotes a stock solution supply port provided at the upper portion of the filter cloth 4 and a lower support bar attached to the lower end of the filter cloth 4.

[0010]

The present invention is configured as described above,
Move the truck to the appropriate place on the opened filter plate, connect the drive to the clutch of the sprocket, and simultaneously release the brake from the head shaft, raise and lower the filter cloth, and discharge the cake formed between the filter plates be able to. That is, in the conventional apparatus, in order to raise and lower the filter cloth, a long cylinder that moves along the filter plate row is required above the filter plate, and furthermore, it is hung on a flexible chain. The upper support bar of the oscillating filter cloth is gripped by the claw of the piston to raise and lower the filter cloth.Therefore, there is a risk of gripping error, but in the present invention, Since the head shaft rotated by the drive unit is supported on the upper part of the filter plate,
If the drive is moved to a predetermined position on the side of the opened filter plate without swinging, the head shaft can be rotated without any erroneous operation to raise and lower the filter cloth, and the drive operation is compact. The space required for the carriage around the filter press can be reduced. The headshaft and the brake are arranged on the same filter plate, and the brake can always be pressed to a predetermined position on the headshaft, so that the headshaft can be rotated by the weight of the filter cloth due to erroneous operation. Not something. And, since the cylinder for disengaging the drive unit and the brake from the head shaft is arranged on the same bogie, the rotation of the head shaft and the release of the brake of the head shaft are performed integrally, and an operation error is caused. It does not occur.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a filter cloth driving device in a filter press according to the present invention.

FIG. 2 is a side view showing the apparatus for suspending a filter cloth.

FIG. 3 is a perspective view showing the suspended filter cloth.

FIG. 4 is a front view of a main part of the drive device for the filter cloth.

FIG. 5 is also a side view of a head shaft brake and its release device.

FIG. 6 is a front view of the main part when the brake abuts on the head shaft.

FIG. 7 is a front view of the main part when the brake is disengaged from the head shaft.

FIG. 8 is a front view of a main part of another embodiment of the brake.

[Explanation of symbols]

2 Guide rail 3 Filter plate 4 Filter cloth 6 Sprocket 7 Head shaft 8 Guide roll 10 Chain 11 Drive unit 12 Truck 13 Cylinder 14, 15 Clutch 16 Brake 16a Recessed groove 16b Clamping part 17 Spring 19 Cylinder 19b Piston

Claims (3)

(57) [Claims] 1. A large number of filter plates 3 arranged in parallel with a guide rail 2.
Can be opened one by one or every few sheets, a pair of filter cloths 4.4 is provided between these filter plates 3.3, and the upper end of the filter cloths 4 is attached to the sprocket 6 above the filter plate 3. After the lower end of the filter cloth 4 is wound around a guide roll 8 provided below the filter plate 3 while being connected to the looped chain 10, the filter cloth 4 is connected to the other end of the chain 10 and travels. in capable filter press was suspended, along the guide rail 2
The driving device 11 for the filter cloth 4 is mounted on a trolley 12 that can travel freely
The drive unit 11 is a cylinder 1 fixed to a carriage 12.
3, is movably connected to the guide rail 2 in the vertical direction,
A clutch 14 is provided at a tip of a shaft of the driving machine 11.
At the same time, the head shaft 7
A clutch 15 is provided at one end, and when the filter plate 3 is opened,
The filter cloth 4 up and down by engaging the switch 14 and the clutch 15
Drive of the filter cloth in the filter press, characterized in that to travel. 2. A headstock to which said sprocket 6 is fixed.
A brake 16 is rotatably arranged on the shaft 7, and this brake
The groove 16a provided on the head shaft 7 is
While being urged by the spring 17 so as to press it resiliently,
The cylinder 19 for dissociation from the
The clutch 14 and the clutch 15 are connected
At the same time, the cylinder 19 is operated to
The rake 16 is separated from the head shaft 7.
The driving device for a filter cloth in the filter press according to claim 1 . 3. In the brake 16, a pair of plate bars is provided.
The head shaft 7 in the normal state by the holding portion 16b made of
At the same time as the cylinder 19
The holding portion 16b is pushed and widened by the projection provided on the stone 19b.
To release the brake 16 from the head shaft 7.
The drive device for a filter cloth in the filter press according to claim 2, characterized in that: