JPH09206516A - 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 both the side parts through the hole are provided leaving the circumferential central part of the plate body outer peripheral edge of the interval plates 5, 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 interstitial plate so that the body can be penetrated by the liquid passage in the axial direction, and each interstitial plate leads from each side to each through-hole, leaving the center of the circumference of the outer peripheral edge of the plate body. Open the notch,
A large-diameter circle in one laminated rotor of adjacent laminated rotors with a plurality of laminated rotors 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 side plate is close to the outer peripheral edge of the small-diameter circular side plate in the other laminated rotary body, and a liquid extraction hole facing the liquid feeding path of each laminated rotary body is formed in the side wall of the processing tank. , An idle ring plate is loosely attached to the outer periphery of each interleave plate of each laminated rotary body, and when each rotary shaft rotates, the outer ring of the idle ring plate of one of the adjacent laminated rotary bodies is rotated. The peripheral edge separates from and contacts the outer peripheral edge of the idler plate in the other laminated rotary member, so that they interfere with each other to stop in an eccentric 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 respectively on the large and small side plates 2, 3 and the interstitial plate 5 so that the axial liquid feed passage 7 is penetrated. Notch 9 leading from each side to each through hole 8 ... 8 leaving the center of the outer periphery of the plate body
Make 9 open. That is, of the through holes 8 ... 8 arranged concentrically on the large and small side plates 2 and 3 and the interstitial plate 5, only the through holes 8 ... 8 formed in the interstitial plate 5 are notched in the outer peripheral edge of the plate body. The parts 9 ... 9 will be opened.

In order to form the above-mentioned structure of the interstitial plate 5, the peripheral portion of the plate surface of the thick plate member may be thinly removed so as to have a form as shown in FIGS. 7 and 8, or FIGS.
As shown in FIG. 2, the plate surface of the central plate body 5a is made into two side plates 5b, 5
The central plate member 5a is sandwiched by b, and the central plate member 5a is not provided with a cutout portion in the through holes 8 ... 8 and the cutout portions 9 ... 9 are provided in the through holes 8 ... 8 formed in both side plates 5b, 5b. May be opened. In any of the above-mentioned forms, the center of the circumference of the outer peripheral edge of the plate body of the interstitial plate 5 serves as a contact surface with the inner peripheral edge of the free ring plate 6.

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. In the case of FIG. 13, the outer diameter of the idle 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 idle ring plate 6 is between It is formed to have a diameter larger than the outer diameter of the interstitial plate 5 so as to maintain a sufficient space with the outer periphery of the plate 5. In the case of FIG. 14, the outer diameter of the idle 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 idle ring plate 6 is between 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. 15, the inner diameter of the free ring plate 6 is made into a non-round shape by the short diameter part A1 having a diameter slightly larger than the outer diameter of the spacer 5 and the long diameter part 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, is smaller than the outer diameter of the small-diameter circular side plate 3, and is a short side facing the major diameter portion A2 of the inner diameter. Diameter portion B1 and minor diameter portion A1 of inner diameter
Is formed into an elliptical shape by the long-diameter portion B2 opposed to. In the case of FIG. 16, 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. An ellipse is formed by a long diameter portion B2 that is larger than the outer diameter of the small-diameter circular side plate 3 and is largely separated from the outer periphery of the interstitial plate 5, and a short diameter portion B1 that is closer to the outer periphery of the interstitial plate 5 than the long diameter portion B2. It is formed into a shape.

A treatment tank 10 has a stock solution supply port 11 formed on its upper wall and a solid content 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.

[0011]

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.

[0012]

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.

【The invention's effect】 [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 in the case where the interleaf plate that constitutes the laminated rotary body in the solid-liquid separation device of the present invention is formed in an integral structure.

FIG. 8 is a cross-sectional plan view in the case where the interposing plate that constitutes the laminated rotary body in the solid-liquid separation device of the present invention is formed in an integrated structure.

FIG. 9 is a side view of the central plate body in the case where the interposing plate that constitutes the laminated rotating body in the solid-liquid separation device of the present invention is formed into a joint structure.

FIG. 10 is a side view of a side plate in the case where the interposing plate that constitutes the laminated rotating body in the solid-liquid separation device of the present invention is formed into a joint structure.

FIG. 11 is a side view in the case where the interposing plate that constitutes the laminated rotating body in the solid-liquid separation device of the present invention is formed in a joint structure.

FIG. 12 is a cross-sectional plan view in the case where the interposing plate that constitutes the laminated rotating body in the solid-liquid separation device of the present invention is formed in a joint structure.

FIG. 13 is a side view exemplifying the shape of a free ring plate loosely fitted to the outer periphery of a plate forming a 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 a perfect circle. It is a case of doing.

FIG. 14 is a side view exemplifying the shape of a free ring plate loosely fitted to the outer periphery 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 an elliptical shape and the outer diameter is formed. An example of forming a perfect circle is shown.

FIG. 15 is a side view exemplifying the shape of a free ring plate loosely fitted to the outer periphery of a plate forming a 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. 16 is a side view exemplifying the shape of an idler plate loosely fitted to the outer circumference of a spacer forming the laminated rotary body in the solid-liquid separator 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 side plate and the interstitial plate so that the axial liquid feed passage is penetrated through the laminated rotor, and from both sides except the circumferential center portion of the outer peripheral edge of the interstitial plate body. Opening a notch that leads to each through hole, and arranging a plurality of laminated rotating bodies at regular intervals in the liquid feeding direction in a processing tank having a stock solution supply port and a solid content discharge port, adjacent laminated rotating bodies. The outer peripheral edge of the large-diameter circular side plate in one of the laminated rotary bodies is close to the outer peripheral edge of the small-diameter circular side plate in the other laminated rotary body, and the liquid component facing the liquid feeding path of each laminated rotary body An extraction hole is formed in the side wall of the processing tank, and an idle ring plate is provided on the outer periphery of each interstitial plate in each laminated rotary body. When the rotating shafts are rotated, the outer peripheral edge of the idle ring plate in one of the laminated rotary bodies of the adjacent laminated rotary bodies is separated from the outer peripheral edge of the idle ring plate in the other laminated rotary body. The solid-liquid separation device is configured so as to interfere with each other and stop in an eccentric state or to be eccentrically rotated at a lower speed than the large and small side plates.