JPH07284611A - Continuous filtering device having sliding mechanism of non-rotational filter plates - Google Patents

Abstract

PURPOSE:To surely exclude the suspension fine particles remained at a minute gap between a rotational filter plate and a non-rotational filter plate to the outside edge of a filtering body by sliding the non-rotational filter plate, when a suspension liquid is filtered with a filtering body. CONSTITUTION:This continuous filtering device has an oscillation mechanism of the non-rotational filter plate which is arranged with plural pieces of filtering bodies 2 formed by attaching a cam plate 23 whose outer peripheral working part comes into contact with a rotational filter plate 22 inserted between the non-rotational filter plates 20 and a center hole surface 206 on the rotary shaft 21 in the filtering tank 1 by inserting the rotary shaft 21 into a central hole of the annular non-rotational filter plate 20 at an idle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous filtration device which reliably and efficiently filters a suspension containing suspended fine particles to separate a filtrate and suspended fine particles.

[0002]

2. Description of the Related Art A rotary filtration plate and a non-rotation filtration plate in a filter body in which a large number of circular rotation filtration plates and liners are alternately mounted around a rotation axis and an annular non-rotation filtration plate is arranged on the outer periphery of each liner. As a continuous filtration device for discharging the filtrate out of the system from the filtrate guide passage provided in the filter body while removing the suspended fine particles entering between the both filtration plates toward the outer edge of the filter body due to the friction resistance of Although it has already been put into practical use as disclosed in US Pat. No. 5,385,852, this type of device cannot rotate the filter body at a high speed due to the principle of filtration and the structure thereof. When the amount is large, the suspended fine particles that enter the gap between the rotary filtration plate and the non-rotational filtration plate cannot be eliminated by their rotational friction force and harden there. There are cases where fear is there not be continuous filtration.

[0003]

Therefore, it is an object of the present invention to efficiently slide the non-rotating filtration plate in order to more reliably achieve its installation effect.

[0004]

The ring-shaped non-rotating filtration plate is slid as a whole while the center hole surface of the ring-shaped non-rotating filtration plate is pressed toward the outer edge while the rotary shaft rotates.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings are embodiments for explaining the present invention in detail. This invention comprises a filter tank 1 and a filter body 2.

The filtration tank 1 has a filtrate chamber 1 on both sides of the filtration chamber 11.
2 and 12 are separated by a partition wall 10. Filtration chamber 11
Is provided with a suspension L supply port 13 in the upper part, a suspension particulate discharge port 14 in the front part (right side in FIG. 1), and each filtrate chamber 12 is provided with a filtrate outlet port 15 in the lower part. It is a thing.

The filter body 2 has a central hole 20a of a large number of annular non-rotating filtration plates 20 arranged at predetermined intervals.
And a rotary filtration plate 22 that is inserted between the non-rotational filtration plates 20 and 20 and rotates while contacting the surface of each non-rotational filtration plate 20. , A flat cam type cam plate 23, which is in the central hole 20a of each non-rotating filtration plate 20 and is slightly thicker than the non-rotating filtration plate 20,
Actuator 23, which is the tip of the cam plate 23 in the longitudinal direction.
a is in contact with the center hole surface 20b of the center hole 20a of the non-rotating filtration plate 20.

Rotary filtration plate 22 and cam plate 23
Are fixed to the rotary shaft 21 with a key K and a nut N.

Each rotary filtration plate 22 is provided with a filtrate guide hole 22a in parallel with the central axis, and the cam plate 23 is provided with a notch hole 23a on the outer periphery so as to face the filtrate guide hole 22a and each rotary filtration plate 22. , 22 ... Provide a filtrate guide path 22b formed by integrally forming a filtrate guide hole 22a in a linear shape, and connect both ends of the filtrate guide path 22b to the filtrate chambers 12, 12. I am allowed.

In the filtration chamber 11, four filter bodies 2 in the upper row and six filter bodies 2 in the lower row are arranged in one row, and two rows are slanted toward the discharge port 14 with the discharge port 14 interposed therebetween. Arranged,
Both ends of each rotary shaft 21 are supported by penetrating the filtrate chambers 12, 12, and a rotation driving gear G of the rotary shaft 21 is attached to one end thereof.

Among the filters 2 in each row, at least the adjacent filters 2 and the non-rotating filtration plates 20, 20 are connected to each other so that they do not rotate regardless of the rotational force of the rotating filtration plate 22.

[0012]

Next, the operation of the device of the present invention will be described. The suspension L is supplied from the supply port 13 of the filtration tank 1 and supplied to the discharge port 14 to a level at which the suspension L does not flow out. .. are rotated in the direction of the arrow in FIG.

Then, the suspension L is filtered in the fine gap between the rotary filtration plate 22 and the non-rotational filtration plate 21, and the filtrate is guided to the notch hole 23a of the cam plate 23 and passed through the filtrate guide passage 22b to obtain the filtrate. It is discharged from the chamber 12 to the outside of the filtration tank 1. On the other hand, a small amount of suspended fine particles remain in the fine gap portion between the rotary filtration plate 22 and the non-rotation filtration plate 21, and are gradually removed in the outer peripheral direction of the filter body 2 due to the frictional force of both the filter plates 22 and 21. It At the same time, the operating portion 23a of the cam plate 23 presses the center hole surface 20b of the center hole 20a of the non-rotating filtration plate 20 so that the non-rotating filtration plate 20 slides in the outer peripheral direction of the filter body 2 sequentially from the pressed position. By doing so, a small amount of suspended fine particles remaining in the fine gap portion between the rotary filtration plate 22 and the non-rotation filtration plate 21 can be reliably removed in the outer peripheral direction of the filter body 2.

The suspended fine particles gradually thicker on the outer periphery of the filter body 2 are moved toward the discharge port 14 by the rotation of the filter body 2 and discharged to the outside of the filter tank 1.

[0015]

As described above, by sliding the non-rotating filtration plate with the cam plate, the small amount of suspended fine particles remaining in the fine gap portions of the non-rotating filtration plate and the rotating filtration plate can be removed more reliably. In addition, since the suspended fine particles laminated on the outer periphery of the filter body are sheared in the rotation axis direction, the filtration holes formed between the suspended fine particles are constantly regenerated even in the rotation axis direction. This has the effect of making it more efficient than conventional devices.

[Brief description of drawings]

FIG. 1 is a front sectional view of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is an enlarged view of a main part of FIG.

FIG. 4 is a sectional view taken along line YY of FIG.

[Explanation of symbols]

 1 Filter Tank 2 Filter Body 13 Suspension Supply Port 14 Suspended Particulate Discharge Port 15 Filtrate Outlet 20 Non-rotating Filtration Plate 20a Non-Rotating Filtration Plate Central Hole 20b Non-Rotating Filtration Plate Central Hole Surface 21 Rotation Axis 22 Rotary Filtration Plate 22b Filtrate Guideway 23 Cam Plate 23b Cam Plate Actuator

Claims (1)

[Claims] 1. A central hole of an annular non-rotating filtration plate, which is arranged in a large number at predetermined intervals in a filtration tank provided with a suspension supply port, a suspension fine particle discharge port, and a filtrate outlet port. A rotary shaft is loosely inserted into the rotary shaft, and a rotary filtration plate interposed between the non-rotational filtration plates and a cam plate whose outer peripheral working portion contacts the central hole surface are attached to the rotary shaft. A continuous filtration device having a non-rotating filtration plate sliding mechanism, characterized in that the filtrate guide passage and the filtrate outlet are connected and sequentially arranged next to each other.