JPH09206517A - Solid-liquid separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solid-liquid separator which prevents solid matter from sticking to a disk and solid matter from entering a liquid feeding path by self- cleaning and also filtrate is smoothly brought out to exert a sufficient solid- liquid separation effect in a rotary disk type solid-liquid separator. SOLUTION: Between large and small circular side plates 2, 3 alternately fitted on a rotating shaft 4, interval plates 5 each having a diameter a little smaller than that of the small diameter circular side plate 3 are inserted to form a laminated rotor 1. In the laminated rotor 1, a hole 8 concentric with the side plates 2, 3 and the interval plates 5 is made so that it may pass through liquid feeding paths 7 in the axial direction, and notch parts 9 leading to the liquid feeding paths 7 from the outer periphery of the interval plates 5 through the hole are provided, and on the outer periphery of each interval plate 5, a loose annular plate 6 is fitted with play.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for separating solids contained in a liquid, particularly suspended solids (SS), and for taking out the separated solids and liquids separately.

[0002]

2. Description of the Related Art A large number of rotating plates of uniform diameter are fitted on a rotating shaft so that a slit groove is held between the plates and a liquid feeding through hole is arranged in each plate. 2. Description of the Related Art A solid-liquid separation device of the type in which a plurality of laminated filter elements are arranged in an intersecting state by adhering plates to each other in adjacent slit grooves is known.

In this type of solid-liquid separation device, if the rotary plate is deeply fitted into the slit groove, the liquid feeding through hole is closed, so that only the peripheral portion of the plate is fitted into the slit groove. The arrangement of the filtration elements is such that the inter-axis spacing is wide, but as a result, the area of the overlapping portion of the plates becomes small and the solid-liquid separation action becomes insufficient, and the filtrate from the liquid-feeding through-holes Has a drawback in that the solid substance is apt to be clogged in the slit groove and the liquid feeding through hole which the plate does not reach, and the removing function thereof does not work.

[0004]

The object of the present invention relates to a solid-liquid separation device,
This is because the self-cleaning action can prevent the solid matter from entering the slit groove and the liquid feeding path, and the smooth action of attracting the filtrate can be performed to exert a sufficient solid-liquid separation effect.

[0005]

In the solid-liquid separation device according to the present invention,
A large-diameter circular side plate and a small-diameter circular side plate are alternately fitted to the rotating shaft, and a spacer having a diameter smaller than that of the large-diameter circular side plate is interposed between the large and small side plates to form a laminated rotary body. Concentric through holes are provided in each side plate and the interstitial plate so that the axial liquid passage is penetrated into the body, and only the through holes formed in the interstitial plate among these through holes have a notch formed in the outer peripheral edge of the plate body. Then, a plurality of laminated rotors are arranged at regular intervals in the liquid feeding direction in a processing tank having a stock solution supply port and a solid content discharge port, and a large one of the adjacent laminated rotors has a large size. The outer peripheral edge of the circular circular side plate is close to the outer peripheral edge of the small circular side plate of the other laminated rotary body, and the liquid extraction holes facing the liquid feed passage of each laminated rotary body are formed in the side wall of the processing tank. Each ring-shaped rotating body is fitted with a play ring on the outer periphery of each plate, During rotation, the outer peripheral edge of the idle ring plate of one of the laminated rotary bodies of the adjacent laminated rotary bodies comes into contact with the outer peripheral edge of the idle ring plate of the other laminated rotary body, so that they interfere with each other and become eccentric. It is configured to stop in a state or to be eccentrically rotated at a lower speed than the large and small side plates.

[0006]

Embodiments will be described below with reference to the drawings of the embodiments.

Reference numeral 1 denotes a plurality of large-diameter circular side plates 2 ... 2 and a plurality of small-diameter circular side plates 3 ... 3 which are alternately fitted to a rotating shaft 4 and which are slightly smaller than the small-diameter circular side plates 3. 5 is a laminated rotary body in which 5 and 5 are interposed between the large and small side plates 2 and 3, and free ring plates 6 and 6 are loosely fitted to the outer circumferences of the inter-plates 5 and 5 respectively. Has been done. And the laminated rotor 1
8 have concentric through holes 8 ... 8 on both the large and small side plates 2 and 3 and the interstitial plate 5 so that the axial liquid feed passage 7 can pass therethrough. Only the through hole 8 formed in the interstitial plate 5 is provided with the cutout portion 9 at the outer peripheral edge of the plate body.

An idle ring plate 6 loosely fitted to the outer periphery of the interstitial plate 5 is formed in a shape as illustrated in FIGS. FIG.
In the above example, the outer diameter of the free ring plate 6 is smaller than the outer diameter of the large-diameter circular side plate 2 and larger than the outer diameter of the small-diameter circular side plate 3, and the inner diameter of the free ring plate 6 is It is formed to have a larger diameter than the outer diameter of the interstitial plate 5 so as to maintain a sufficient distance from the outer periphery of the disc. In the case of FIG. 9, the outer diameter of the free ring plate 6 is smaller than the outer diameter of the large-diameter circular side plate 2 and larger than the outer diameter of the small-diameter circular side plate 3, and the inner diameter of the free ring plate 6 is between the two. The end diameter portion A1 having a diameter slightly larger than the outer diameter of the plate 5 and the long diameter portion A2 largely separated from the outer periphery of the interstitial plate 5 are formed into an elliptical shape. In the case of FIG. 10, the inner diameter of the free ring plate 6 is made into a non-round shape by the short diameter portion A1 having a diameter slightly larger than the outer diameter of the spacer 5 and the long diameter portion A2 largely separated from the outer periphery of the spacer 5. The outer diameter of the free ring plate 6 is smaller than the outer diameter of the large-diameter circular side plate 2 and larger than the outer diameter of the small-diameter circular side plate 3, and the short-diameter portion facing the long-diameter portion A2 of the inner diameter. An elliptical shape is formed by B1 and a long diameter portion B2 that faces the short diameter portion A1 of the inner diameter. In the case of FIG. 11, the inner diameter of the free ring plate 6 is formed to be slightly larger than the outer diameter of the spacer plate 5, and the outer diameter of the free ring plate 6 is smaller than the outer diameter of the large-diameter circular side plate 2. A long diameter portion B2 having a diameter larger than the outer diameter of the small-diameter circular side plate 3 and largely separated from the outer periphery of the interstitial plate 5;
A short-diameter portion B1 closer to the outer circumference of the interstitial plate 5 than the long-diameter portion B2
It is formed into an elliptical shape by and.

A treatment tank 10 has a feed port 11 for the undiluted solution on its upper wall and a solids discharge port 12 on its rear end wall. 1 are successively arranged in the processing tank 10 in the liquid feeding direction, and the large-diameter circular side plates 2 of one of the laminated rotary bodies 1, 1 of the adjacent laminated rotary bodies 1, 1 are adjacent to each other. With the outer peripheral edge of the laminated rotary body 1 approaching the outer peripheral edge of the small-diameter circular side plate 3 of the other laminated rotary body 1, for example, the solid component discharge ports 12 are arranged in two rows so as to sandwich the solid matter discharge ports 12 from above and below. The rotating shafts 4 of 4 are supported on both side walls of the processing tank 10. Although not shown in the drawing, a filtrate chamber is attached to one outer side of the processing tank 10, and the above-mentioned feeding chamber is provided through a circulation hole formed in the peripheral portion of the support portion of each rotating shaft 4. The liquid passage 7 and the filtrate chamber are electrically connected. In addition, the rotary shafts 4 ...
.. 4 are led out, and sprocket wheels are fitted to the leading ends. Then, in order to move the stock solution supplied from the supply port 11 in the opening direction of the solid content discharge port 12, the laminated rotor group 1 ... 1 in the upper row and the laminated rotor group 1. The prime mover chain is chain-transmitted to each sprocket wheel so that it rotates in the opposite direction.

[0010]

1 is rotated at a low speed in a predetermined direction by the rotation of the prime mover so that the stock solution supply port 11 causes the processing tank 1 to rotate.
Supply stock solution into 0. With the rotation of the laminated rotating body 1 ... 1, the liquid is transferred from the notch 9 ...
Is transferred into the filtrate chamber through the
As it is transferred to the opening direction of the liquid, it is concentrated by the solid-liquid separation action, gradually dehydrated and becomes a solid having a low water content, and is discharged from the discharge port 12, and the liquid in the filtrate chamber is discharged at the lower bottom. Is discharged from the outside. And the laminated rotor 1
During the rotation of 1, the outer peripheral edges of the idler plates 6, 6 of the adjacent laminated rotary bodies 1, 1 are repeatedly brought into contact with and separated from each other, thereby interfering with each other and stopping in an eccentric state or Since the eccentric rotation is performed at a speed lower than that of the large and small side plates 2 and 3, a self-cleaning function works around each plate body side of the laminated rotary body 1 and the notch 9 communicating with the through hole 8 in the solid-liquid separation process. At the same time, the action of forcing movement of the filtered fine particles occurs.

[0011]

According to the solid-liquid separation device of the present invention, the free ring plate 6 loosely fitted to the outer periphery of the interstitial plate 5 is eccentrically contacted with the laminated rotating body 1, so that self-generated on the side surface of each plate body. It is possible to prevent clogging of solids by the cleaning effect, and since the cutout portion 9 communicating from the peripheral portion of the plate body to the liquid supply path 7 is opened in the through hole 8 of the interstitial plate 5, the above self-cleaning effect is obtained. Combined with the fact that it extends to the periphery of the cutout portion 9, there is an advantage that the guide of the filtrate to the liquid supply path 7 becomes smooth, and the solid-liquid separation work by the laminated rotator 1 can be performed more effectively.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a solid-liquid separation device of the present invention.

FIG. 2 is a side view of a laminated rotating body in the solid-liquid separation device of the present invention.

FIG. 3 is a cross-sectional plan view of a laminated rotating body in the solid-liquid separation device of the present invention.

FIG. 4 is a plan view showing an adjoining aspect of a plurality of laminated rotating bodies in the solid-liquid separation device of the present invention.

FIG. 5 is a side view of a large-diameter circular side plate that constitutes a laminated rotating body in the solid-liquid separation device of the present invention.

FIG. 6 is a side view of a small-diameter circular side plate that constitutes a laminated rotary body in the solid-liquid separation device of the present invention.

FIG. 7 is a side view of an interposing plate which constitutes a laminated rotating body in the solid-liquid separation device of the present invention.

FIG. 8 is a side view exemplifying the shape of a free ring plate loosely fitted to the outer circumference of a plate forming a laminated rotary body in the solid-liquid separator of the present invention, in which the inner diameter and the outer diameter are formed into perfect circles. It is a case of doing.

FIG. 9 is a side view exemplifying the shape of a free ring plate loosely fitted around the outer periphery of the interposing plate that constitutes the laminated rotary body in the solid-liquid separation device of the present invention. An example of forming a perfect circle is shown.

FIG. 10 is a side view exemplifying the shape of a free ring plate loosely fitted to the outer periphery of the plate forming the laminated rotary body in the solid-liquid separation device of the present invention, in which the inner diameter and the outer diameter are formed into an elliptical shape. Here is an example.

FIG. 11 is a side view exemplifying the shape of a free ring plate loosely fitted to the outer circumference of a plate forming a laminated rotary body in the solid-liquid separation device of the present invention, in which the inner diameter is formed into a perfect circle and the outer diameter is formed. An example of forming an ellipse is shown.

[Explanation of symbols]

 1 Laminated Rotating Body 2 Large Diameter Circular Side Plate 3 Small Diameter Circular Side Plate 4 Rotating Shaft 5 Interstitial Plate 6 Free Ring Plate 7 Liquid Transfer Path 8 Through Hole 9 Notch 10 Processing Tank 11 Raw Liquid Supply Port 12 Solids Discharge Port

Claims (1)

[Claims] 1. A laminated rotary body in which large-diameter circular side plates and small-diameter circular side plates are alternately fitted to a rotary shaft and a small-diameter plate smaller than the large-diameter circular side plates is interposed between the large and small side plates. , Concentric through holes are provided in each of the side plates and the interstitial plate so that the liquid feed path in the axial direction is penetrated through the laminated rotor, and only the through holes formed in the interstitial plate among the through holes are the outer peripheral edge of the plate body. The notch is opened in the, and a plurality of laminated rotating bodies are arranged at regular intervals in the liquid feeding direction in a processing tank having a stock solution supply port and a solid content discharge port,
The outer peripheral edge of the large-diameter circular side plate of one laminated rotary body of the adjacent laminated rotary bodies is close to the outer peripheral edge of the small-diameter circular side plate of the other laminated rotary body. A liquid extraction hole facing the liquid passage is bored in the side wall of the processing tank, and an idle ring plate is loosely fitted around the outer periphery of each interposing plate in each laminated rotating body so that they are adjacent to each other when the rotating shafts rotate. The outer peripheral edge of the idle ring plate in one of the laminated rotary bodies of the laminated rotary body is brought into contact with the outer peripheral edge of the idle ring plate in the other laminated rotary body so as to interfere with each other and stop in an eccentric state. Alternatively, the solid-liquid separation device is configured to be eccentrically rotated at a speed lower than that of the large and small side plates.