JP3316693B2 - Filter cloth for 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 filter press, in which when the filtration is completed, the filter plates are opened one by one, and the dewatered cake formed between each pair of filter cloths is dropped. The present invention relates to a filter cloth for a filter press so as not to be scattered.

[0002]

2. Description of the Related Art FIG. 1 is a front view showing an embodiment of the present invention. The structure of a conventional filter press will be described with reference to FIG. Left and right are a pair of vertical legs 1
It is. A fixed frame 2 is mounted on the left leg 1, and a cylinder frame 3 is mounted on the right leg 1. A horizontal main beam 4 is mounted between the fixed frame 2 and the cylinder frame 3 so as to extend over the horizontal frame. A tightening cylinder 5 is mounted on the cylinder frame 3, and a loose head 6 is mounted on a left end of a rod protruding to the left of the tightening cylinder 5. Fixed frame 2 and loose head 6
The filter plate 7 at the right end is attached to the loose head 6. Inverted V-shaped filter cloth suspension links 8 connect the upper ends of adjacent filter plates 7 respectively. A hanging member 9 such as a spring wire rope is lowered from the upper end of the filter cloth hanging link 8, and a filter cloth support bar 10 is attached to the lower end of the hanging member 9. The upper ends of a pair of left and right filter cloths 11 facing each other are attached to each filter cloth support bar 10. As shown in FIGS. 2 and 3,
A feed port 12 is provided at the center of the filter plate 7 or the filter cloth 11. The loose head 6 is moved forward by applying hydraulic pressure to the tightening cylinder 5 to bring each filter plate 7 into close contact. here,
The slurry is poured from the feeder 12 and each pair of filter cloths 1
Dehydration cakes are formed during each one. (Depending on the type of filter press, there is also a type in which a diaphragm is attached to the surface of each filter plate 7. In this type, after filtration, dehydration is further performed to form a dewatered cake.) , Tightening cylinder 5
, The loose head 6 is retracted, and the distance between the first filter plate 7 and the next filter plate 7 is increased. A pair of filter cloths 11 between the two filter plates 7 open in an inverted V shape, and the dewatered cake formed between the two filter cloths 7 falls. (Vibration is applied to the filter cloth support bar 10,
Sometimes the dehydrated cake is shaken off. In this way, the dehydrated cake is dropped one after another while increasing the interval between the filter plates 7 one by one.

[0003]

When a dewatered cake is dropped in a conventional filter press, all of the dewatered cake peeled off from the filter cloth 11 does not always fall directly below, but sometimes jumps out to the side. Then, it fell on the filter plate moving device on the side of the row of the filter plates 7 or jumped out of the airframe. When falling onto the filter plate moving device,
This could cause a malfunction of the filter plate moving device. Also, when jumping out of the aircraft, the floor and the like were soiled.

[0004]

The filter cloth for a filter press according to the present invention has solved such a problem and is as follows. That is, in the pair of mutually opposing filter cloths 11 constituting the filter chamber, the joining members 13 are attached to both side ends of the opposing surfaces. The joining member 13 joins the opposing filter cloths 11 at a portion where the joining member 13 is attached when the filter plate 7 is closed, and when the frame is opened, the pair of filter plates 7 is separated until a certain distance is separated. The joining state is maintained at the joining portion by the joining force, and the joining is released when the joint is separated by a certain distance or more. As the joining member 13, one of the pair of filter cloths 11 may use a male hook-and-loop fastener, and the other may use a female hook-and-loop fastener. Depending on the type of the filter cloth 11 and the male hook-and-loop fastener, a male hook-and-loop fastener is used for only one filter cloth 11 and the joining member 13 is used for the other filter cloth 11.
You may not need to use. Also, one filter cloth 1
A magnet may be used for 1 and a magnetic material may be used for the other filter cloth 11. For both of the pair of filter cloths 11, magnets whose opposing surfaces have different polarities may be used. Further, an adhesive tape having an adhesive surface may be used for both filter cloths 11. Depending on the type of the filter cloth 11 or the adhesive tape, the adhesive tape may be used for only one filter cloth 11 in some cases. The various joining members 13 are attached to the filter cloth 11 by sewing, welding, or stapling.

[0005]

First, the filter plates 7 are brought into close contact with each other by closing the frame. Neighbors of the filter cloths 11 come into close contact with each other, and the portion where the joining member 13 is attached is also pressed and joined. Here, a filtering operation is performed. In order to discharge the dehydrated cake after the filtration is completed, first, the leading filter plate 7 is moved to increase the interval with the next filter plate 7. While the distance is still narrow, both end portions of the pair of filter cloths 11 facing each other remain joined by the joining member 13. The pair of filter cloths 11 swells like a bag and opens downward, during which the dewatered cake falls from the lower mouth. If the distance between the pair of filter plates 7 further increases, the joining of the joining member 13 is released,
The opening of the filter plate 7 is not prevented. In this way, the dewatered cake is dropped one by one while widening the interval between each filter plate 7 one by one.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view schematically showing the entirety of the embodiment, FIG. 2 is a front view schematically showing a main part of the embodiment, and FIG. 3 is a view taken along the line AA of FIG. The structure and use of a conventional filter press are as described above. In this embodiment, the joining members 13 are attached to both ends of the opposing surfaces of the pair of filter cloths 11 so as to oppose each other. The joining member 13 joins when opposing surfaces are pressed against each other, and can be joined by applying a slight force to the opposite side. For example, as shown in FIGS. 5 and 6,
One can be a female hook-and-loop fastener provided with a large number of loops, and the other can be a male hook-and-loop fastener provided with a large number of hooks such as hooks and mushrooms. The above is used as follows. The tightening cylinder 5 is operated in the forward direction to bring the respective filter plates 7 into close contact with each other via the loose head 6. Neighbors of the filter cloths 11 are also in close contact with each other, and the opposing joining members 13 are pressed together and joined. Here, the slurry is injected from the feed port 12 and filtered. To discharge the dewatered cake after the filtration, the tightening cylinder 5 is operated in the retreating direction, and the loose head 6 is retreated. The space between the first filter plate 7 and the next filter plate 7 increases. While the space is still narrow, both ends of the filter cloth 11 are still joined by the joining member 13 as shown in FIG. The pair of filter cloths 11 swells like a bag, and during this time, the dewatered cake falls right below through the lower opening, so that it does not scatter to the side. Then, when the interval between the pair of filter plates 7 further increases, as shown in FIG. 2, the joining of the joining members 13 is released, so that the frame of the filter plates 7 is not obstructed. In this way, the dehydrated cake formed between the filter cloths 11 is dropped one after another.

[0007]

When the filter cloth for a filter press according to the present invention is used, the dewatered cake does not scatter on or outside the filter plate moving device. Therefore, it is possible to prevent a malfunction caused by the dewatered cake adhering to the filter plate moving device, and it does not stain the floor surface or the like.

[Brief description of the drawings]

FIG. 1 is a front view schematically showing an embodiment of the present invention.

FIG. 2 is a front view schematically showing a main part of the embodiment.

FIG. 3 is a view taken along the line AA of FIG. 2;

FIG. 4 is a front view schematically showing a main part of the embodiment.

FIG. 5 is a front view schematically showing a main part of the embodiment.

FIG. 6 is a front view showing a modification of the part shown in FIG. 5;

[Explanation of symbols]

 7 Filter plate 11 Filter cloth 13 Joining member

Claims (4)

(57) [Claims] 1. A pair of mutually opposing filter cloths (11) constituting filter chambers are joined to both ends of opposing surfaces when the filter plate (7) is closed and closed when the filter plate is open. Until a pair of filter plates (7) are separated by a predetermined distance, a bonding state is maintained at a bonding portion by a bonding force, and a filter cloth for a filter press is provided with a bonding member (13) which is separated when separated by a predetermined distance or more. 2. The joining member (13), wherein one of a pair of filter cloths (11) uses a male hook-and-loop fastener and the other uses a female hook-and-loop fastener. For filter press. 3. The filter for a filter press according to claim 1, wherein one of the pair of filter cloths (11) uses a magnet and the other uses a magnetic material as the joining member (13). cloth. 4. The filter cloth for a filter press according to claim 1, wherein an adhesive tape is used for one or both of the pair of filter cloths as the joining member.