JPS641163B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The disclosed technology belongs to the technical field of a filter cloth cleaning device for a filter press, which is a solid-liquid separation device.

Accordingly, the present invention provides a filter cloth cleaning device for a filter press in which a cleaning liquid jetting nozzle faces a filter frame which is arranged alternately with filter plates and has filter cloths attached to both sides when the plates are opened. In particular, the invention relates to a cleaning liquid, in which the cleaning liquid jetting nozzle is formed to protrude from an elastic body such as rubber, and further, the base of the nozzle is linked to a displacement device such as a turning movement device or a parallel movement device. This invention relates to a filter cloth cleaning device for a filter press that is connected and supported by a conduit and is pressed and slid against the filter cloth surface.

<Prior art> As is well known, solid-liquid separation is widely used as an indispensable basic technology in all industries, and this equipment has high solid-liquid separation efficiency and requires relatively small space occupancy. Filter presses are widely used.

The structure of this type of filter press will be briefly explained based on FIG. A large number of filter plates 4... and a hydraulic jack 5 that presses and supports the filter plates 4 at one end are interposed and supported between them, and the filter plates 4... are further supported by filter frames 6... having filter cloths on both sides. are interposed between them, and the support block 2,
Its opening and closing is guided by a guide rail 7 running between 2'.

When performing solid-liquid separation using the filter press 1, first, the filter plates 4... and
The filter frames 6... are pressed by the hydraulic jacks 5 supported by the support block 2', and the filter frames 4...
are set in a state where both sides of the filter frame 6 are pressed and supported, and then, in this state, slurry is flowed into each filter frame 6 at high pressure.

As a result, the solid content of the slurry remains in the filter frame 6 as a cake, and the liquid content flows out of the filter frame 6 from the filter cloth surface.

When the solid-liquid separation is completed, the filter plates 4 and the filter frames 6 are separated by the hydraulic jacks 5, and then the filter frames 6 are opened and the filter frames 6 are separated.
The solid matter remaining inside is taken out as a cake.

Furthermore, after the filter press 1 finishes removing the cake remaining in the filter frame 6 as described above, the same solid-liquid separation process as described above is repeated.

However, in this filter press 1, as the solid-liquid separation process as described above is repeated, the filter cloths attached to both sides of the filter frame 6 naturally become clogged, and eventually solidify. Liquid separation becomes impossible.

Therefore, in the seed filter press, it becomes necessary to periodically replace the filter cloth or remove solid matter adhering to the surface of the filter cloth.

However, since the filter cloths used in filter presses are generally expensive, the latter method of regenerating the function of the filter cloth has been more desired than the former method of replacing the filter cloth.

As a conventional method for regenerating the filter cloth function, after taking out the cake, a nozzle is placed facing the filter cloth surface, and a high-pressure cleaning fluid is jetted from the nozzle, and the jet pressure causes the cleaning fluid to adhere to the filter cloth surface. A method that removes the solid content is generally used.

<Problems to be Solved by the Invention> However, the above-mentioned embodiment in which the nozzle is made to face the filter cloth surface and the high-pressure fluid is jetted from the nozzle is not possible due to only the jet flow pressure of the cleaning liquid jetted from the nozzle. However, since the method attempts to remove solid matter adhering to the surface of the filter cloth, there is a problem in that complete regeneration of the filter cloth cannot be expected.

Furthermore, in the conventional method described above, since the ejection angle of the ejection nozzle is set, there is also the disadvantage that uneven removal of solid matter adhering to the filter cloth surface tends to occur near the ejection part.

In addition, in the above-mentioned conventional method, since the jet nozzles are fixed, a large number of jet nozzles must be provided when trying to cover the entire surface of the filter cloth, and in order to increase the jet flow pressure of each nozzle, it is difficult to The disadvantage was that it required an extremely large prime mover.

The purpose of the present invention is to solve the problems of the filter cloth cleaning device of a filter press based on the above-mentioned prior art, and to improve the cleaning efficiency by adding a mechanical cleaning operation to the filter cloth. It is an object of the present invention to provide an excellent filter cloth cleaning device for a filter press that is useful for the field of application of solid-liquid separation technology in various industries by increasing the degree of regeneration of solid-liquid separation and increasing the efficiency of solid-liquid separation work.

<Means/effects for solving the problems> In order to solve the above-mentioned problems, the structure of the present invention, which is based on the above-mentioned claims, is such that filter plates are arranged alternately with filter plates on both sides. A cleaning fluid conduit connected to a displacement device and operating along the filter cloth surface is provided near the filter frame to which a filter cloth is attached, and the cleaning fluid conduit is further provided with a protruding shape that faces and abuts against the filter cloth surface. By connecting the elastic cleaning nozzle, when cleaning the filter cloth, the nozzle presses and slides against the filter cloth to mechanically scrape off deposits on the surface of the filter cloth, and at the same time, a high-pressure cleaning liquid is released from the nozzle. A technical measure has been taken to more reliably remove the clogged deposits on the filter cloth surface by ejecting the filter cloth.

<Embodiment - Configuration> Next, one embodiment of the present invention will be described below based on FIGS. 1 and 2.

Note that the same parts as in FIG. 3 will be described with the same reference numerals.

1' is a filter press, and a filter cloth cleaning device 8 of this invention is provided, and the filter press 1'
A pair of support blocks 2 and 2' are placed and fixed at a predetermined distance on the base of a plant (not shown). A pair of guide rails 7, 7 are interposed, and the guide rails 7,
A plurality of filter plates 4 .

Furthermore, a filter frame 6 is interposed between each of the filter plates 4, which is guided by guide rails 7, 7 and has filter cloths 10 on both sides in the same way as the filter plates 4. A cleaning device 8 and a fixed cleaning liquid conduit 11 are attached to the sides extending between 2'.

Thus, the cleaning device 8 includes a rotating rod 12.
and a movable cleaning fluid conduit 14 supported by the rod 12 via a swivel joint 13, which rod 12 is pivotally supported via brackets 15 on the sides of the support blocks 2, 2' and its It is connected via a link 16 to an air cylinder (not shown) provided on the side, and the rod 12 is further provided with a swivel in the longitudinal direction thereof corresponding to the position of the filter frame 6 when the filter plate 4 is disassembled. A set number of joints 13 are provided.

Each swivel joint 13 has an inlet (not shown) connected to a fixed cleaning liquid conduit 11 provided parallel to the rod 12, and an outlet (also not shown) connected to a movable cleaning liquid conduit 14. .

Furthermore, the movable cleaning fluid conduit 14 connected to each of the swivel joints 13 has a predetermined number of jet nozzles 17 connected to its tip.
7 is made of an elastic body such as a rubber material, and is able to come into pressure contact with the filter cloth 10 surface of the filter frame 6 which is in a disassembled state.

<Embodiment - Effect> In the above-described configuration, when the filter press 1 is operated to perform solid-liquid separation, first, a plurality of filter plates 4 and a filter frame 6, each of which is opened at a predetermined interval, are mounted on the support block 2'. They are pressed by the rod 9 of the hydraulic jack supported by the rod 9, and are pressed into close contact with each other and set, and then, in this set state, high pressure slurry
The slurry S is filtered by filter cloths 10 attached to both sides of the filter frame 6.

At this time, the solid content of the slurry S remains in the filter frame 6, and the liquid content flows out of the filter frame 6 through the filter cloth.

Furthermore, when a predetermined amount of slurry S flows into the filter frame 6 from the guide pipe, the flow of the slurry S is stopped, and the hydraulic jack 5 moves the filter plate 4 into the filter frame 6.
... and the filter frame 6... are each dissociated and opened, and then,
The filter frame 6 is opened and the solid matter remaining in the filter frame 6 is taken out as a cake.

Furthermore, while each of the filter frames is kept open by the hydraulic jack 5, the filter cloths 10 attached to both sides thereof are washed by the filter cloth cleaning device 8, and the filter cloths 10 attached to the surfaces of the filter cloths 10 are cleaned. The solid matter that has been removed is removed.

When each of the filter cloths 10 is cleaned by the filter cloth cleaning device 8, the fixed cleaning liquid conduit 1
Pressurized cleaning liquid is introduced into the rod 12.
An air cylinder (not shown) provided at the end is driven, and the pressurized cleaning liquid is transferred from the fixed cleaning liquid conduit 14 to the swivel joint 13 and the movable cleaning liquid conduit 1.
4 to the jet nozzle 17 and is ejected from the tip of the jet nozzle 17. On the other hand, the driving force of the air cylinder is sent to the rod 12 through the link 16.
The movement of the rod 12 causes the movable cleaning liquid conduit 14 to swivel through the swivel joint 13, and the jet nozzle 1 connected to its tip.
7 is pressed and slid against the surface of the filter cloth 10.

Therefore, the solid matter adhering to the surface of the filter cloth 10 is removed by the scraping action of the tip of the jet nozzle 17 and the flow pressure of the cleaning liquid jetted from the tip of the nozzle 17.

Furthermore, since the jet nozzle 17 is made of an elastic material, it bends appropriately when pressed against the surface of the filter cloth 10, and the jet angle of the cleaning liquid is gradually changed.

<Other Embodiments> It goes without saying that the embodiments of the present invention are not limited to the above-mentioned embodiments. For example, the displacement device connected to the cleaning liquid conduit may be of a parallel displacement type instead of a rotational displacement type. Various aspects can be adopted, such as the following.

<Effects of the Invention> As described above, according to the present invention, the efficiency of cleaning the filter cloth is basically improved, thereby increasing the degree of regeneration of the filter cloth and enabling efficient solid-liquid separation work. The effect is produced.

That is, a cleaning liquid conduit connected to a displacement device and operating along the filter cloth surface is provided near a filter frame which is arranged alternately with the filter plates and has filter cloth attached to both sides, and furthermore, the cleaning liquid conduit is connected to a displacement device and operates along the filter cloth surface. An elastic cleaning nozzle which faces and abuts against the filter cloth surface is connected to the filter cloth surface, and when the filter cloth is cleaned, the nozzle presses and slides against the filter cloth surface and at the same time its tip moves and jets out high-pressure cleaning liquid. This provides an excellent effect in that solid matter adhering to the filter cloth surface can be removed more reliably.

Further, since the cleaning nozzle is made of an elastic material, the jetting angle is appropriately displaced when the cleaning liquid is jetted onto the filter cloth surface, and an excellent effect is achieved in that deposits on the filter cloth surface can be removed more evenly.

Furthermore, since the above-mentioned cleaning nozzle that spouts high-pressure cleaning liquid displaces its tip along the filter cloth surface when cleaning the filter cloth, the entire surface of the filter cloth can be covered with a minimum number of nozzles, and as a result, the jetted cleaning liquid This has the excellent effect of making it possible to use a smaller capacity motor for increasing the pressure.

[Brief explanation of drawings]

1 and 2 are explanatory diagrams of one embodiment of the present invention, in which FIG. 1 is a perspective view, FIG. 2 is a plan view, and FIG. 3 is a schematic side view of a conventional embodiment. 6... Filter plate, 10... Filter cloth, 4... Filter frame, 17
...Washing liquid jet nozzle, 1'...Filter press,
8... Filter cloth cleaning device, 12, 13... Displacement device,
14...Cleaning liquid conduit.

Claims (1)

[Scope of Claims] 1. In a filter cloth cleaning device for a filter press in which a cleaning liquid jetting nozzle faces a filter frame which is arranged alternately with filter plates and has filter cloths attached to both sides, the cleaning liquid jetting nozzle is made of an elastic body. 1. A filter cloth cleaning device for a filter press, characterized in that the filter cloth cleaning device is connected to and supported by a cleaning liquid conduit connected to a displacement device so as to be able to press and slide against the filter cloth surface. 2. A filter cloth cleaning device for a filter press according to claim 1, wherein the displacement device is a rotational movement device. 3. The filter cloth cleaning device for a filter press according to claim 1, wherein the displacement device is a parallel displacement device.