JPH0331364Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a filter cloth vibrating device in a filter press.

Prior Art A filter cloth vibrating device in a conventional filter press has a filter cloth vibrating device that lowers a filter cloth vibrating hammer to a predetermined position between the open filter plates by the action of an air cylinder, for example, after the completion of compression filtration. By further raising and lowering the hammer in a vertical plane or moving it in a circular motion, vibrations were imparted to the filter cloth hanging rod and thus to the filter cloth suspended from the rod (for example, see Japanese Patent Publication No. 54-24747). However, with conventional devices, the vibration applied to the filter cloth is relatively slow, so it takes time to remove the cake, and in severe cases, the cake remains until the next filtration step is carried out. This caused a problem in that the efficiency of filtration work by the filter press was poor. Further, in the conventional apparatus, noise is generated when the filter cloth is vibrated by the hammer, and the filter cloth is damaged due to the hammer's impact or abrasion.

Therefore, the present applicant first proposed a filter cloth vibrating device in which the filter cloth hanging rod of the filter press is caught by a trapping means, and the cake is gradually removed by the vibration of a vibrator. (Refer to Publication No. 260610). According to the device proposed by this tip, it is possible to apply more vibration to the filter cloth in a short time compared to the conventional device described above, and therefore the cake can be peeled off and removed quickly, and at the same time, noise can be reduced. This has the advantage that this does not occur and the filter cloth is not damaged. This invention is an improvement on the filter cloth vibrating device proposed by Tsutsumi, so that it can provide vibrations with even larger amplitudes.

Purpose of the invention The purpose of this invention is that when vibrating the filter cloth after filtration work, it is possible to apply vibrations of a very large amplitude to the filter cloth, and therefore the cake can be peeled off and removed more quickly. It is an object of the present invention to provide a filter cloth vibrating device for a filter press that can perform the filtration work easily and reliably, and can greatly improve the efficiency of the filtration work of the filter press.

Structure of the invention In order to achieve the above-mentioned object, this invention has a mounting board that is provided on a moving body that can move back and forth so that it can be raised and lowered freely, and is arranged above a filter cloth hanging rod. An upper mounting plate is provided via a vibration transmission prevention mechanism, and hanging members made of flexible strips are attached to the front and back sides of the upper mounting plate in a hanging manner, facing each other. In a filter press, a lower mounting plate is provided at the lower end of the holding member, and a vibrator and a filter cloth hanging rod catching means for catching the filter cloth hanging rod when the vibrator vibrates are attached to the lower mounting plate. The gist is a filter cloth vibrator.

Embodiment Next, an embodiment of this invention will be described based on the drawings.

In this specification, front, back, right and left are based on Figure 6, front means the right side of Figure 6, rear means the left side of Figure 6, right means the front side of the same drawing sheet, and left means the back side of the same drawing sheet. shall mean.

In this embodiment, this invention is applied to a so-called side plate type filter press in which a large number of filter plates are supported by a pair of left and right side plates and are opened and closed.

In FIG. 6, the filter press includes a first head 3 and a rear head 4 each having a stand 1, a pair of left and right side plates 2, 2 fixed to these, and rollers 9 on both left and right side plates 2, 2.
a loose head that is movable through the
A cylinder 6 is provided on the rear head 4 to move the loose head 5 forward and backward, and a large number of filter plates are slidably held in a hanging manner from the left and right side plates 2, 2 via a pair of hanging hands 8, 8. It has 7.

The left and right side plates 2, 2 are each provided with endless chains 11, 11 for feeding the filter plate in the middle via a filter plate pulling mechanism 12, and each endless chain 11 has a pair of winding portions at both ends, front and rear. It is wrapped around chain foils 13 and 14. Driving force is transmitted to the front chain wheel 13 from a reversible motor 15 with a reduction gear via a transmission mechanism. The filter plate traction mechanism 12 is provided with a filter plate pull-back pawl 41 and a stop pawl 42 that are raised up by the force of a pair of tension springs.

Further, as shown in FIGS. 4 to 6, each side plate 2 is provided with a guide rail 16 below the endless chain 11, and when viewed from the front spanning the left and right side plates 2, 2, a gate-shaped moving body is provided. A pair of front and rear rollers 18, 18 provided on both left and right leg portions 17a, 17a of the movable body 17 are placed on guide rails 16, 16 and guided, so that the movable body 17 can move back and forth. There is.

As shown in FIGS. 1 to 5, the filter cloth vibrating device 20 according to this invention is provided at the top of the portal moving body 17. As shown in FIGS. That is, an air cylinder 21 for lifting and lowering is installed at the top of the moving body 17 and its piston rod 2
2 is fixed with the piston rod facing downward, and the piston rod 2
A substantially rectangular mounting board 23 is horizontally fixed to the tip of the mounting board 2 via a cylindrical connecting member 32 having reinforcing ribs 35 . A substantially rectangular upper mounting plate 24 is horizontally attached to the upper surface of the mounting board 23 via a coil spring 25 as a vibration transmission prevention mechanism. This upper mounting plate 24 has a long pear-shaped through hole 33 on one side.
The tip of the piston rod 22 and the connecting member 3
2 is inserted. Brackets 34, 34 are provided on both the front and rear sides of the lower surface of the upper mounting plate 24, respectively, and these brackets 34, 34 are provided with a pair of suspension members 2 made of flexible spring steel strip plates.
6 and 26 are attached in a hanging manner and facing each other. Since the lower mounting board 23 is larger than the upper mounting board 24, notches 31, 31 are provided on both front and rear sides of the center of the mounting board 23, and the hanging members 26, 31 are provided in these notches 31, 31. 26 are fitted in each. Front and rear suspension members 2
A substantially rectangular lower mounting plate 27 is attached to the lower ends of the filters 6 and 26 via brackets 35 and 35, and a vibrator 28 is mounted on the upper surface of the lower mounting plate 27, and a filter cloth hanging rod 30 is attached when the vibrator 28 vibrates. A filter cloth hanging rod catching means 29 for catching the filter cloth is attached.

Here, as the vibrator 28, a vibration motor, an air type vibrator, a magnetic type vibrator, etc. can be used. The amplitude of the vibration of the vibrator 28 is 2 to 50 mm, preferably 10 to 50 mm.
mm, and frequency 300-5000Vpm, preferably
700~3500Vpm. The illustrated vibrator 28 is a vibration motor, and specifically has an amplitude of 16 mm and a frequency of 1160 Vpm.

In this embodiment, each suspension member 26 is formed by integrating three strips made of flexible spring steel, with a central long strip 26a.
and short strip plates 26b, 26b each having a half length, which are integrally connected to both upper sides of the strip plate with bolts and nuts.
In addition, these hanging members 26 may be constituted by one strip plate, or two.
It may also be made by polymerizing and integrating more than one strip. Further, although the illustrated hanging members 26 have wide ones attached to each side, the invention is not limited to this.
Two or more 6's may be installed on both the front and rear sides.
Further, the hanging member 26 may be made of other flexible materials such as synthetic resin.

At the upper end of the cylindrical connecting member 32 attached to the tip of the piston rod 22, a horizontal plate 36 for preventing rotation of the rod is provided in a forward extending manner, and a slide bar 37 is attached to the tip of this horizontal plate 36 in an upright manner. This slide bar 37 is connected to the moving body 17.
It is slidably inserted into an insertion hole 38 drilled in the top wall of. A non-tact operating plate 39 is attached to the upper end of the slide bar 37, and a proximity switch 40 is attached to the upper surface of the movable body 17 via a bracket 43 so as to face it.

In addition, L-shaped brackets 4 are installed on both the front and rear sides of the moving body 17.
4 and 44 are attached in a hanging manner, respectively, and when the piston rod 22 of the air cylinder 21 protrudes from the lower horizontal portions of these brackets 44 and 44, it comes into contact with the mounting board 23 to determine its lower limit position. An upper positioning stopper 45 is provided in an upwardly projecting shape and adjustable in height,
A lower positioning stopper 46 is provided in a downwardly projecting manner and is adjustable in height by coming into contact with the lower mounting plate 27 when the piston rod 22 is retracted to determine its upper limit position.

Further, the filter cloth hanging rod capturing means 29 has the following configuration. That is, lower mounting plate 2
A pair of front and rear horizontal shafts 51, 50 are mounted on the lower surface of the shaft 7 via a pair of front and rear bearing brackets 50, 50 on each side.
51 is rotatably attached, a lever 52 is provided in the center of each horizontal shaft 51 in an upwardly projecting manner, and bosses 53, 53 are attached to both left and right ends of each horizontal shaft 51, and these bosses 5
3, 53, one pair of arms 5 on the left and right, front and rear
4 and 54 are fixed so as to face each other in the front and rear, and catching plates 55 and 55 each having a square shape and an inverted shape when viewed from the side are fixed to the outside of the lower ends of the front and rear arms 54 and 54, respectively. It should be noted that a urethane rubber plate is attached to the surfaces of the capture plates 55, 55 that come into contact with the filter cloth hanging rod. A balance weight 64 is attached to the right end of each horizontal shaft 51.

Further, on both the front and rear sides of the lower surface of the lower mounting plate 27, there are brackets 5 located on the outside of the arms 54, 54.
A pair of front and rear bellows type air spring mechanisms 57, 57 are attached via pins 59, 56.
59, they are swingably connected. Each air spring mechanism 57 includes a pair of surface plates 62 and 63, and a rubber bellows section 60 provided between these for introducing pressurized air. A pair of return coil springs 6
1 and 61 are arranged, and both ends of each coil spring 61 are fixed to both left and right ends of surface plates 62 and 63. The illustration of means for introducing and discharging pressurized air is omitted.

Both the front and rear filter surfaces of the filter plate 7 are covered with a pair of front and rear filter cloths 10 that are interconnected at the central stock solution introduction hole. Both left and right ends of the filter cloth hanging rod 30 attached to the upper edge of each filter cloth 10 are connected to horizontal upper ends of inverted L-shaped spring hanging brackets 47 provided in an upright manner on both left and right sides of the upper end of the filter plate 7. They are each suspended by a coil spring 48 suspended from the section. The connecting member 49, which is a chain that connects the opposite ends of the filter cloth hanging rods 30 of the adjacent filter plates 7, has a distance greater than the distance between the adjacent filter plates 7. It has a short length. Incidentally, this connecting member 49 may be composed of a rope or the like other than a chain.

In addition, in FIG.
1, 51 is provided with a cleaning liquid spouting pipe 66 held at the same level. This pipe 66 connects to the downward piston rod 6 of the lifting air cylinder 67.
The hose 6 wound around a reel 70 is attached horizontally to the tip of the pipe 66.
The tip of hose 9 is connected, and cleaning liquid is supplied from this hose 69.

Next, the operation of the filter cloth vibrating device 20 will be explained.

After the compression filtration is completed, the gate-shaped movable body 17 of the filter cloth vibrating device 20 is moved by a movable body feeding drive mechanism (not shown) that operates in synchronization with the filter plate traction device 12, and is moved to a separated state. The filter plates 7 are stopped at an intermediate portion between them, and then the air cylinder 21 is actuated to cause the piston rod 22 of the air cylinder 21 to project downward and the mounting board 23 to be lowered. This mounting board 2
The lower limit position of 3 is set in advance by adjusting the height of the upper positioning stopper 45. Mounting board 23
is lowered and brought into contact with the upper stoppers 45, 45, and when the mounting board 23 is stopped at the lower limit position, the air spring mechanisms 57, 57 of the capturing means 29
Pressurized air is introduced into the bellows parts 60, 60 of
As a result, the tip brackets 58, 58 move against the tensile force of the left and right coil springs 61, 61 and hit a stopper (not shown), during which the levers 52, 52 are rotated by a required angle, and at the same time The shafts 51, 51 and the arms 54, 54 rotate to form trapping plates 55, 55 in the shape of a rectangular shape and an inverted shape.
are opened outward, and these are the front and rear filter cloth hanging rods 3.
It is pressed against the inner surface of 0.30. Here, the left and right ends of both the filter cloth hanging rods 30, 30 are connected by a pair of connecting members 49, 49 made of chains, and the filter cloth hanging rods 30, 30 are connected to the capture plate 55,
55 holds it tightly.

Next, by operating the vibrator 28, the filter cloth hanging rods 30, 30 and the filter cloths 10, 10 are caused to vibrate together via the capturing means 29. As mentioned above, the vibrator 28 has a relatively small amplitude of, for example, 2 to 50 mm, but has a very high vibration frequency, and the lower mounting plate 27 on which the vibrator 28 is mounted is made of a flexible band plate. A pair of hanging members 2
6 and 26, so when the vibrator 28 is vibrated, the hanging rod 3 caught by the catching plates 55 and 55
0,30 and the filter cloths 10,10 are significantly amplified, as a result of which the filter cloths 10,10 move forward and backward with an amplitude much larger than the amplitude inherent to the vibrator 28, and also very rapidly. It flutters and also vibrates in the vertical direction, giving the cake a very strong shaking-off action in a certain period of time, thereby removing the cake adhering to the filter cloths 10, 10 in an even shorter period of time. It can be removed quickly and reliably.

Incidentally, although the vibration given to the filter cloth by the vibrator 28 is extremely intense,
Since the filter cloth hanging rods 30, 30 are firmly captured by the capturing means 29, no noise is generated due to vibration, and the filter cloths 10, 10 are not damaged. Furthermore, since a coil spring 25 is interposed between the mounting board 23 and the upper mounting plate 24 as a vibration transmission prevention mechanism, the vibrator 28
The vibrations are hardly transmitted to the moving body 17.

After the cake removal work is completed, the air spring mechanism 57,
When the air in the bellows parts 60, 60 of the bellows part 57 is discharged and the tip brackets 58, 58 are returned to their original states by the tensile force of the coil springs 61, 61, the levers 52, 52 and the arms 54, 54 are moved to the above-mentioned position. At the same time, the horizontal shafts 51, 51 are rotated, and the capture plates 55, 55 are separated from the filter cloth hanging rods 30, 30, respectively, and returned to their original states. Then, the piston rod 22 is retracted by the operation of the air cylinder 21, and the filter cloth hanging rod capturing means 29 is raised, and the lower mounting plate 27 abuts the lower positioning stopper 46 at the upper limit position. In addition, when the proximity switch 40 is activated, the capturing means 29 is stopped.

Then, when the next filter plate 7 is opened by the operation of the filter plate traction mechanism 12, the moving body 17 is synchronously opened by the operation of the feed drive device (not shown) for the moving body 17
is moved a predetermined distance, and the filter cloth hanging rod catching means 29 is positioned between the next open filter cloths 7, and the above-mentioned cake removal work is automatically performed for each filter chamber in the same manner. It is something that is done repeatedly.

In the above embodiment, an air cylinder is used as a means for raising and lowering the mounting board 23, but the present invention is not limited to this. Other means for raising and lowering, for example, using a threaded rod and a female threaded cylinder, or a slide A cylinder or the like may also be used. Furthermore, the filter cloth hanging rod capturing means 29 is not limited to the one shown in the drawings.
Other chuck devices equipped with catch claws that can be opened and closed,
Alternatively, a capturing means such as an electromagnetic holder that attracts the filter cloth hanging rod 30, which is a ferromagnetic material, by magnetic force may be used. Details of the elevating means for the mounting board 23 and the capturing means 29 are disclosed in the above-mentioned Japanese Patent Laid-Open No. 106813/1983.

In addition, the vibration transmission prevention mechanism is not limited to the one shown in the diagram.
Other suitable materials may be used.

Further, in the above embodiment, the movable body 17 has a gate shape when viewed from the front, and is adapted to move while being guided by rails 16, 16 provided on the left and right side plates 2, 2. 17 is not limited to a portal shape, but may have other shapes, for example, the mobile body 1
7 may of course be moved while being guided by a rail arranged above the group of filter plates 7 of the filter press.

Further, in the above embodiment, the invention is applied to a so-called side plate type filter press in which the filter plate 7 is suspended by a pair of left and right side plates 2, 2 so as to be movable back and forth. The present invention is similarly applied to a so-called overhang type filter press (not shown) which is suspended from an upper guide rail so as to be movable back and forth.

In the filter cloth vibrating device for a filter press according to this invention, as described above, the mounting board 23, which is provided on the movable body 17 that can move back and forth so that it can be raised and lowered, is arranged above the filter cloth hanging rod 30. An upper mounting plate 24 is provided on this mounting board 23 via a vibration transmission prevention mechanism 25, and suspension members 26, 26 each consisting of a flexible band plate are arranged opposite to each other on both the front and rear sides of the upper mounting plate 24. A lower mounting plate 27 is provided at the lower end of these hanging members 26, 26.
A vibrator 28 and a filter cloth hanging rod catching means 29 for catching the filter cloth hanging rod 30 when the vibrator 28 vibrates are attached to the lower mounting plate 27 provided with the vibrator 28. The filter cloth hanging rods 30, 30 held by the catching plates 55, 55 are suspended when the vibrator 28 is vibrated.
The vibrations applied to the filter cloths 10, 10 are significantly amplified, and as a result, the filter cloths 10, 10 flutter back and forth with an amplitude much larger than the amplitude inherent to the vibrator 28 and extremely rapidly. It also vibrates in the vertical direction, giving a very large amount of vigorous shaking-off action to the cake in a certain period of time, thereby quickly and reliably removing the cake adhering to the filter cloths 10, 10 in a shorter period of time. It is something that can be removed. Furthermore, since the filter cloth hanging rod 30 caught by the capture means 29 vibrates together with the vibrator 28, unlike the case of conventional filter cloth vibrating devices, no noise is generated due to vibration, and the filter cloth 10 is not damaged. This has the effect of not being affected by

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and FIG. 1 is a left side view of the filter cloth vibrating device of the invention, taken along the line in FIG. 2. Fig. 2 is a front view of the same, Fig. 3 is an enlarged sectional view along the line of Fig. 1,
FIG. 4 is a left side view of the product of the present invention attached to a moving body, and FIG. 5 is a front view of the same, taken along the line of FIG. 6. FIG. 6 is a partially cutaway right side view of the entire filter press. 2... Side plate, 7... Filter plate, 10... Filter cloth, 16
...Guide rail, 17...Moving object, 20...
Filter cloth vibrating device, 21...Air cylinder, 23...
... Mounting board, 24 ... Upper mounting plate, 25 ... Coil spring (vibration transmission prevention mechanism), 26 ... Hanging member,
27... Lower mounting plate, 28... Vibrator, 2
9... Filter cloth hanging rod capturing means, 30... Filter cloth hanging rod.

Claims (1)

[Scope of utility model registration request] A mounting board 23, which is provided on a movable body 17 that can move back and forth so that it can be raised and lowered, is arranged above the filter cloth hanging rod 30. 24, and hanging members 26, 26 made of flexible strip plates are installed on both the front and rear sides of the upper mounting plate 24, respectively, facing each other and hanging down. A lower mounting plate 27 is provided at the lower end of the vibrator 28 .
and a filter cloth hanging rod catching means 29 for catching the filter cloth hanging rod 30 during vibration of the vibrator 28.