JP2001017810A - Filter apparatus for slurry - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate clogging easily and to be durable in long term use by forming the inside of a filter main body in which needle-shaped projections are formed in a fixed plate to make paste-like slurry sent from a pressure passage advance from the tips of the projections toward the fixed plate. SOLUTION: A filter main body F in which needle-shaped projections 2 are formed at mutually parallel regular intervals on a fixed plate 1 is moved at a position adjacent to the opening end of a slurry supply passage 10 by a driving apparatus 6, with a foreign matter removing plate 3 moved by a removing apparatus 4 to be contacted with the fixed plate 1 of the main body F, the supply of paste-like slurry 8 is started, and the slurry 8 is introduced toward the plate 1 and the plate 3 into the main body F. Foreign matter in the slurry 8 is caught in turn by the sharp tip parts of the projections 2 in the vicinity of the open end of the main body F, reaches the plate 3, and is retained. During the time, the slurry moves in the peripheral direction of the main body F, is pushed outside, falls into a recovery container 5, and is recovered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter device for separating and removing foreign matter from organic substances of a paste slurry obtained by crushing and crushing garbage by, for example, a garbage processing machine.

[0002]

2. Description of the Related Art As an example of a garbage disposal method that is currently performed, a garbage disposal machine is used to obtain a paste-like slurry of garbage, which is further crushed and then fermented. A step of producing a useful substance such as a fertilizer.

However, various foreign substances other than organic substances are mixed in the garbage actually collected. Therefore, foreign substances that cannot be fermented, such as vinyl, wrap, styrofoam, lint, and plant fibers, remain in the slurry, which may adversely affect the subsequent processing steps.

[0004] In particular, vinyl and wrap cannot be completely crushed even in the crushing step after crushing, and in the fermentation treatment step, they are caught by the stirring blades or the like in the processing tank and become entangled, and in the worst case, equipment failure occurs.

Therefore, it is conceivable to remove the above-mentioned foreign substances from the paste slurry. As the simplest method, only the organic slurry is filtered using a mesh filter to separate foreign substances.

[0006]

However, in the separation by filtration using a mesh filter, the clogging phenomenon due to foreign matter is promoted with long-term use, and the filter function is deteriorated. Furthermore, eventually, the filter may no longer function as a filter and may be damaged.

It is difficult to eliminate such clogging,
The only option is to replace the filter, but since the filter cannot be used for a long period of time, it must be replaced frequently, resulting in inevitable reduction in work efficiency and high cost.

In view of the above problems, an object of the present invention is to provide a slurry filter device which can easily eliminate clogging and can withstand longer use than before.

[0009]

In order to achieve the above object, a slurry filter device according to the first aspect of the present invention is provided for collecting and removing foreign matter in a paste slurry fed under pressure. A filter device, comprising: a filter main body having a plurality of needle-like projections projecting at predetermined intervals parallel to each other on a fixing plate; and a sliding body with the needle-like projections penetrating the needle-like projections. Movably disposed foreign matter removing plate, moving means for sliding the foreign matter removing plate from the fixed plate position of the needle-like projection to the tip, and paste-like slurry passed between the needle-like projections of the filter body. A slurry collection container for collection, a foreign matter collection container for collecting foreign matter released from the needle-like puncture state by moving the foreign matter removal plate toward the needle-like protrusion tip direction, and the filter body, A predetermined position adjacent to the slurry pumping passage opening end during rally recovery, in which the foreign matter on the foreign-matter collecting container when particles recovered was and a driving mechanism for moving between a predetermined position of falling.

[0010] In the filter device according to the present invention, a plurality of needle-like projections are protruded at predetermined intervals parallel to each other on the fixed plate to constitute a filter main body, and are sent from the pressure feed path. When the paste-like slurry advances from the tip of the needle-like projection toward the fixing plate (back) in the filter body, foreign matter such as vinyl or wrap mixed in the slurry on the paste may be applied to any of the needle-like projections. Pierce.
That is, when the paste-like slurry is fed by moving the foreign matter removing plate disposed on the filter body in a state where the needle-like projections penetrate to the fixing plate side, the foreign matter pierced into the projections is brought into the foreign matter removing plate side by the slurry pressure feeding. While being pushed into
The slurry is extruded to the outer periphery of the filter body while passing through the gap between the needle-shaped projections by the pumping force, falls, and is collected in the slurry collection container.

Therefore, as the paste-like slurry is continuously fed under pressure, foreign matter sticking into the needle-like projections is more and more sent to the bottom of the main body along the projections and accumulates, and the separation from the paste-like slurry is continued. Proceed to further,
When foreign matter has accumulated on the foreign matter removing plate side for a certain degree or more, the pumping of the paste-like slurry is stopped, and the drive mechanism moves the filter body from a predetermined position adjacent to the opening end of the slurry pressure feeding passage to a predetermined position at the time of foreign matter collection. If the removing plate is slid toward the distal end of the projection, which is the open end of the filter main body, the accumulated foreign substances can be collectively discharged to the outside of the main body and collected in the foreign substance collection container.

In such a filter device of the present invention, since foreign matters accumulated during operation of the device can be easily discharged,
Good separation of foreign substances over a long period of time without the risk of clogging and damage caused by conventional mesh filters, without the need for frequent replacement of filters, and efficient separation of garbage slurry and foreign substances Can be performed at low cost.

In the design of the number and spacing of the needle-like projections, it is necessary that foreign matters must be in a state where they can easily penetrate into the projections and do not easily pass through them. In particular, it is important that the spacing between the projections is not too large. . However, if the projections are too dense, it becomes difficult to pass and collect the garbage paste-like slurry, and it becomes almost clogged.Therefore, the spacing between the projections depends on the particle diameter and the viscosity of the slurry. Set as appropriate.

Further, the needle-shaped projection may be a thin one having a sharp shape, the tip of which is easy to pierce a foreign substance. Materials made of piano wire can be used. However, in the case of horizontal installation, a tip having a diameter that can maintain rigidity such that the tip does not hang down by its own weight or bend by pressing of the slurry is appropriately selected.

The length of the filter body (the length of the needle-like projection)
If the length is too long, it becomes difficult to feed the slurry by pressure or the tip tends to hang down.If the length is too short, foreign matters accumulate too quickly and the discharge operation becomes frequent. What is necessary is just to determine mainly according to the state of the foreign substance mixed. At present, 200 mm or more is practical based on the most problematic foreign materials such as vinyl and wrap.

The moving means of the present invention may be any means that can slide the foreign matter removing plate from the fixed plate to the tip of the projection in the filter body. In addition, the driving unit is configured to move the filter body from a position adjacent to the opening end of the slurry pressure feeding path to a predetermined position on the foreign matter collecting container when foreign matter is collected, that is, to prevent foreign matter from falling on the foreign matter collecting container at the tip end of the main body open end. What is necessary is just to be able to move over the position which can be collected. As these driving sources, for example, a configuration using a hydraulic cylinder such as a hydraulic cylinder is simple.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As an embodiment of the present invention, an example of a filter device for paste-like slurry of a horizontal installation type is shown in a schematic configuration diagram of FIG. In this device, needle-like projections 2 made of a piano wire having a diameter of 2.5 mm are embedded on a fixed plate 1 at intervals of 3 to 5 mm so as to be parallel to each other in the horizontal direction. A filter body F having a cylindrical shape with an outer diameter of about 350 mm is formed.

A foreign substance removing plate 3 is fixed inside the filter body F by a moving device 4 including a hydraulic cylinder incorporated in the filter body F in a state where all the needle-like projections 2 penetrate inside the filter body F. It is slidably disposed from the plate 1 side to the tip end of the projection which is the body open end.

When the paste-like slurry 8 is collected, the filter body F is located at a position adjacent to the opening end of the slurry pumping passage 10, but below the filter body F at this time. Recovery container 5 for recovering slurry 8 that falls between needle-like projections 2 in the interior
Is placed. Further, a foreign substance collecting container 7 for accommodating the foreign substances 9 is also installed in the vicinity, but the foreign substances 9 separated from the slurry 8 are collectively discharged from the open end of the filter body F by the foreign substance removing plate 3 as described later. In this embodiment, a hydraulic cylinder as a driving means for moving the filter body F so that the open end of the filter body F comes to a position above the foreign matter collection container 7 when collecting foreign matter. And a driving device 6 comprising:

The foreign matter removing operation of the filter device of the present embodiment having the above-described configuration is as follows. First, as an initial state, the filter main body F is moved to a predetermined position adjacent to the opening end of the slurry pressure feeding path 10 by the driving device 6, and the foreign matter removing plate 3 is moved by the moving device 4 to fix the filter main body F in advance. In a state where the paste-like slurry 8 is kept in contact with the plate 1, the paste-like slurry 8 is started to be fed into the filter body 1 from its open end toward the fixing plate 1 and the foreign matter removing plate 3 at the back.

Then, as shown in the sectional view along the axial direction of the filter main body in FIG. 1A and the longitudinal sectional view of the filter main body in FIG. The foreign matter 9 such as vinyl or wrap sequentially pierces the sharp tip of the needle-like projection 2 near the open end of the filter body F. These foreign substances 9 are pushed in while being pierced by the needle-like projections 2 toward the foreign substance removing plate 3 at the back of the filter main body F along with the whole slurry 8 being pressure-fed, reach the foreign substance removing plate 3 and accumulate therein. To go.

In the meantime, the paste slurry 8 moves toward the outer periphery of the filter body F while passing through the gap between the needle-like projections 2 while moving toward the fixed plate 1 and the foreign matter removing plate 3 in the filter body F by the pumping force. Eventually, it is pushed out of the filter main body F and finally falls into the slurry collection container 5 and is collected.

As described above, only the foreign matter 9 mixed in the slurry 8 is collected by the needle-like projections 2 only by feeding the paste-like slurry 8 from the open end of the filter body F more and more. From the filter body F and remain on the foreign matter removal plate 3 side.

When the foreign matter 9 accumulates to some extent, the interval between the operation of the apparatus is observed, and as shown in the schematic sectional view of FIG. To the position where it comes to. Then, at that position, the foreign matter removing plate 3 is slid to the tip of the needle-like projection 2 by the moving device 4 so that the accumulated foreign matter 9 is removed.
From the open end of the filter body F. The extruded foreign matter 9 falls into the foreign matter collection container 7 and is collected. After the foreign matter 9 is discharged, the moving device 4 is driven again to remove the foreign matter.
To return to the fixed plate 1 side. Further, the driving device 6
By returning the filter body F to a predetermined position adjacent to the opening end of the slurry pressure feeding path 10, the slurry 8 can be collected again while the foreign matter 9 is separated and removed.

As described above, according to the filter device of the present embodiment, it is possible to easily discharge the accumulated foreign matter, and if this is repeated periodically, the filter performance is not deteriorated and the filter is kept in a stable state without failure for a long time. Can be used.

In the above embodiment, the horizontal (horizontal) type is shown, but the filter device according to the present invention is also effective when configured as a vertical type.

[0027]

As described above, the present invention has the effect that the problem of clogging as in the prior art can be easily solved and the foreign matter can be stably separated from the garbage slurry for a long period of time.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a slurry filter device according to an embodiment of the present invention, in which (a) is a cross-sectional view along the axial direction of the device in an operation state of the device, and (b) is ( FIG. 3A is a longitudinal sectional view taken along line XX of the main body, and FIG. 3C is an axial sectional view of the apparatus when foreign matter is discharged.

[Explanation of symbols]

 F: Filter body 1: Fixing plate 2: Needle-like projection 3: Foreign matter removing plate 4: Moving device 5: Slurry collecting container 6: Driving device 7: Foreign matter collecting container 8: Paste slurry 9: Foreign matter 10: Slurry pressure feed path

Claims (1)

[Claims] 1. A filter device for collecting and removing foreign matter in a paste slurry which is fed under pressure, comprising a plurality of needle-like projections projecting from a fixed plate at predetermined intervals parallel to each other. A filter main body, a foreign matter removing plate slidably disposed with respect to the needle-like projections in a state where these needle-like projections penetrate, and moving the foreign matter removing plate from the fixed plate position of the needle-like projections. A moving means for sliding over the tip, a slurry collecting container for collecting the paste slurry passed between the needle-shaped protrusions of the filter body, and a needle-shaped by moving the foreign matter removing plate toward the needle-shaped protrusion tip. A foreign matter collection container for collecting foreign matter released from the projection puncturing state; a filter body at a predetermined position adjacent to an opening end of a slurry pressure feeding path at the time of slurry collection; And a drive mechanism for moving the foreign matter to a predetermined position where the foreign matter falls.