JPS61238308A - Apparatus for washing filter cloth of filter press - Google Patents

Abstract

PURPOSE:To further ensure removal of the adhered substance on the surface of filter cloth, in the filter cloth washing apparatus in a filter press, by providing a washing solution conduit connected to a displacement apparatus and acting on the surface of the filter cloth and connecting a protruded elastic washing nozzle to said conduit. CONSTITUTION:When filter cloth 10 is washed by a filter cloth washing apparatus 8, a pressurized washing solution is introduced into a fixed washing solution conduit 14 while the air cylinder provided to the end part of a rod 12 is driven and said pressurized washing solution is supplied to a jet nozzle 17 from said fixed washing solution conduit 14 through a swivel joint 13 and a movable washing solution conduit to be injected from the leading end of said jet nozzle 17. The driving force of the above-mentioned air cylinder revolves the rod 12 through a link 16 and the operation of said rod 12 revolves the movable washing solution conduit through the above-mentioned swivel joint 13 and the jet nozzle 17 connected to the leading end thereof is pressed to and slide with the surface of the filter cloth 10.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> 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 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 diameter #JJ device or a parallel displacement device. connected to the cleaning fluid conduit,
This invention relates to a filter cloth cleaning device for a filter press that is configured to press and slide 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 the seed 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, and the filter plates 4... have filter cloths on both sides. A filter frame 6... is interposed between the filter frames 6 and the support 10.
The opening and closing of the rail 7 is guided by the idle rail 7.

When solid-liquid separation is performed using the filter press 1, first, the filter plates 4 and the filter frame 6 are
is pressed by the hydraulic presser 5 supported by the support block 2', and the filter frame 4 is set in a state where both sides of the filter frame 6 are pressed and supported. In this state, slurry is flowed into each filter frame 6 under 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 surface of the heavy cloth.

Further, when the solid-liquid separation is completed, the filter plate 4... and
The filter frame 6... is separated by the hydraulic jack 5,
Thereafter, the filter frame 6 is opened and the solid matter remaining in the filter frame 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, it repeats the same solid-liquid separation process as above.

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

Therefore, this type of filter press requires regular replacement of the heavy cloth.
Alternatively, it becomes necessary to remove solid matter adhering to the surface of the filter cloth.

However, since 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 means for regenerating the function of heavy cloth, a nozzle is placed facing the filter cloth surface after removing the cake, and 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 placed facing the filter cloth surface and the high-pressure fluid is jetted from the nozzle is such that only the jet pressure of the cleaning liquid jetted from the nozzle is used. 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 embodiment, since the jet nozzles are fixed, a large number of jet nozzles must be provided in order to cover the entire surface of the filter cloth, and in order to increase the jet flow pressure of each nozzle, it is necessary to provide a large number of jet nozzles. The disadvantage was that it required an extremely large prime mover.

The purpose of this invention is to solve the problems of the filter cloth cleaning device for a filter press based on the above-mentioned prior art, and
By adding mechanical cleaning to heavy fabrics and improving their cleaning efficiency, the degree of regeneration of heavy fabrics is increased, and the efficiency of solid-liquid separation work is improved, thereby improving the application field of solid-liquid separation technology in various industries. It is an object of the present invention to provide an excellent filter cloth cleaning device for a filter press that is beneficial to the user.

In order to solve the above-mentioned problems, the structure of the present invention, which is based on the above-mentioned object and the gist of the above-mentioned claims, is to solve the above-mentioned problems. A cleaning liquid conduit connected to a displacement device and operating along the filter cloth surface is provided near the filter frame to which a cloth is attached, and a protruding shape is provided in the cleaning liquid conduit to face and abut against the heavy cloth surface. By connecting an elastic cleaning nozzle, when cleaning the filter cloth, the nozzle presses the heavy cloth to open and mechanically scrape off deposits on the surface of the heavy cloth, and at the same time, high-pressure cleaning liquid is jetted from the nozzle. In this way, technical measures have been taken to more reliably remove the clogged deposits on the surface of the heavy cloth.

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

still. Components having the same features as those in FIG. 3 will be described with the same reference numerals.

Reference numeral 1' denotes a filter press, and a filter cloth cleaning device 8 of this invention is installed. and the support block 2.2
A pair of guide rails 7.7 running in the direction between the blocks 2.2' are interposed between the blocks 2.2', and a plurality of filter plates 4 guided by the guide rails 7.7 and the filter plates 4. Hydraulic jack 5 supporting filter plate 4 at one end via its rod 9
The interposition is fixed.

Furthermore, a filter frame 6 is interposed between each of the filter plates 4, which is guided by a guide rail 7.7 and has filter cloths 10 on both sides in the same way as the filter plates 4. Support block 2.2
A cleaning device 8 and a fixed cleaning liquid conduit 11 are installed on the side between
is attached.

The cleaning device 8 thus comprises a rotatable rod 12 and a movable cleaning liquid conduit 14 supported on the rod 12 via a swivel joint 13, the rod 12 being connected to the side surface of the support block 2.2'. Bracket 15...
The rod 12 is pivotally supported via a link 16 and is connected via a link 16 to an air cylinder (not shown) provided on the side thereof. A set number of the swivel joints 13 are provided corresponding to the positions of 6.

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 liquid conduit 14 connected to each of the swivel joints 13 has a predetermined number of jet nozzles 17 connected to its tip. Filter cloth 10 of the filter frame 6 placed
It can be pressed into contact with the surface.

<Example - Effect> In the above-described configuration, when the filter press 1 is operated to perform solid-liquid separation, first, the plurality of filter plates 4 and the filter frame 6, which are respectively spaced at predetermined intervals, are supported by a support block. They are pressed by the rod 9 of the hydraulic jack supported by the hydraulic jack 2' and are set in a close contact with each other, and then, in this set state, high-pressure slurry S is flowed in from a guide pipe (not shown). The slurry S flowing in 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 plates 4 and the filter frame 6.
. are separated 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.

Further, each filter frame is cleaned by a filter cloth cleaning device 8, while the filter cloths 10 attached to both sides of each filter frame are kept in the state of being pressed by the hydraulic jack 5, and the filter cloths 10 are cleaned by the filter cloth cleaning device 8. The attached solid matter is removed.

When each of the filter cloths 10 is cleaned by the filter cloth cleaning device 8, pressurized cleaning liquid is introduced into the fixed cleaning liquid conduit 14 and an air cylinder (not shown) provided at the end of the rod 12 is introduced. is driven, and the pressurized cleaning liquid is fed from the fixed cleaning liquid conduit 14 to the jet nozzle 17 via the swivel joint 13 and the movable cleaning liquid conduit 14,
The jet is ejected from the tip of the jet nozzle 17. On the other hand, the driving force of the air cylinder rotates the rod 12 via the link 16, and the movement of the rod 12 is controlled by the swivel joint 1.
-13, the movable cleaning liquid conduit 14 is rotated, and the ejection nozzle 17 connected to the tip thereof 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 operation by the tip of the jet nozzle 11 and the nozzle 1
7 is removed by the flow pressure of the cleaning liquid jetted from the tip.

Furthermore, since the jet nozzle 17 is made of an elastic body,
When pressed against the 10 sides of the L filter cloth, bend it appropriately,
The jetting 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. A large number of embodiments can be adopted.

<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 the 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.

In addition, 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, resulting in the excellent effect that deposits on the filter cloth surface can be removed more evenly. .

Furthermore, since the 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, an excellent effect can be achieved in that the motor for increasing the pressure of the jetted cleaning liquid can be made smaller in capacity.

[Brief explanation of drawings]

Figure 1.2 is an explanatory diagram of one embodiment of this invention, and the first
The figure is a perspective view, the second figure is a plan view, and the third figure is a schematic side view of a conventional mode. 6... Filter plate, 10... Filter cloth,

Claims (3)

[Claims] (1) In a filter cloth cleaning device for a filter press in which a cleaning liquid jetting nozzle faces a filter frame that is arranged alternately with filter plates and has filter cloths attached to both sides, the cleaning liquid jetting nozzle is formed of an elastic material. 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 as set forth in claim 1, wherein the displacement device is a turning device. (3) A filter cloth cleaning device for a filter press according to claim 1, wherein the displacement device is a parallel displacement device.