JP3630806B2 - Solid-liquid separator - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an apparatus for separating solids, particularly suspended solids (SS), contained in a liquid and taking out the separated solid and liquid separately.
[0002]
[Prior art and its problems]
A plurality of laminated filter elements in which a large number of rotating plates having uniform diameters are fitted to the rotating shaft to hold slit grooves between the plates and liquid-feeding through holes are arranged in each plate, A solid-liquid separation device of a type in which adjacent plates are placed in a mating state with their plates inserted into each other's narrow groove is known.
[0003]
In this type of solid-liquid separator, if the rotary plate is deeply inserted into the slit groove, the liquid feed through hole is blocked, so that only the periphery of the plate is inserted into the slit groove. Although the filter element is arranged with a wide space, the area of the overlapping portion between the plates is reduced, resulting in insufficient solid-liquid separation, and the filtrate is drawn out from the liquid-feeding through-hole. The action is also weak, and there is a drawback that the solid material is easily clogged and the removal function does not work in the slit groove and the liquid feed through hole which cannot reach the plate.
[0004]
OBJECT OF THE INVENTION
The object of the present invention relates to a solid-liquid separation device, and it is possible to prevent solids from entering into the slit groove and the liquid feed path by self-cleaning action, and a smooth liquid drawing-out action is performed. The purpose is to exert a separation effect.
[0005]
[Structure of the invention]
In the solid-liquid separation device according to the present invention, the large-diameter filter element having a diameter difference between the side plate and the intermediate plate so as to hold an annular slit groove on the outer periphery of the intermediate plate sandwiched between the circular side plates, and the filtration A laminated rotating body in which a plurality of small-diameter filtering elements having the same configuration as the element and having a smaller diameter than that of the element and having a circular ring groove fitted with a post-circular ring plate are alternately mounted on the same rotation shaft. None, concentric through holes are provided in each of the interplates and the side plates so that the axial direction of the liquid feed passage is penetrated through the laminated rotating body, and among these through holes, the through holes formed in the intermediary plate in the small-diameter filter element are provided. Open the notch that leads to the annular slit groove only on the outer peripheral edge of the disc, and the outer diameter of the free ring plate that fits into the annular slit groove in the small-diameter filter element is larger than the outer diameter of the side plate. Ellipse or other non-true so that the short diameter part is the same diameter or slightly larger than the outer diameter of the intermediate plate and the longer diameter part is larger than the outer diameter of the intermediate plate A plurality of the laminated rotating bodies are sequentially adjacent to each other in a processing tank having a stock solution supply port and a solid content discharge port, and the outer peripheral side surfaces of the side plates in the large-diameter filter element overlap each other and the small-diameter filter element is formed. The outer peripheral part of the idle ring plate was inserted into the annular slit groove of the large-diameter filter element, and a liquid extraction hole facing the liquid feeding path of the laminated rotating body was formed in the side wall of the treatment tank.
[0006]
【Example】
Hereinafter, description will be made with reference to the drawings of the embodiments.
[0007]
1a is a large-diameter filter element that constitutes a part of the laminated rotating body 2 to be described later, and the side plate 3a and the intermediate plate are provided so that an annular slit groove 5a is held on the outer periphery of the intermediate plate 4a sandwiched between the circular side plates 3a and 3a. A diameter difference is given to 4a. 1b is a small-diameter filter element having the same configuration as that of the large-diameter filter element 1a and having a smaller diameter than the large-diameter filter element 1a, and an annular slit groove 5b formed on the outer periphery of the intermediate plate 4b sandwiched between the circular side plates 3b and 3b. A free ring plate 6 to be described later is fitted in the. Each of the large-diameter filter elements 1a and the small-diameter filter elements 1b is inserted into the rotary shaft 7 alternately in such a manner that the axially directed liquid supply path 8 passes through the laminated rotary body 2. Concentric through holes 9... 9 are provided in the side plates 3 a and 3 b and the intermediate plates 4 a and 4 b, and the through holes formed in the intermediate plate 4 b in the small-diameter filter element 1 b of these through holes 9. Only 9 has a notch 10 that opens to the annular slit groove 5b at the outer periphery of the disk. In the small-diameter filter element 1b, the outer diameter of the free ring plate 6 fitted to the annular slit groove 5b is larger than the outer diameter of the side plate 3b, and the inner diameter is the same as the outer diameter of the intermediate plate 4b at the short diameter portion A. It is formed in a non-circular shape such as an ellipse so that it has a slightly larger diameter and a larger diameter than the outer diameter of the intermediate plate 4b at the long diameter portion B.
[0008]
Reference numeral 11 denotes a processing tank, which has a stock solution supply port 12 on its upper wall and a solid content discharge port 13 on its rear end wall. A plurality of the laminated rotators 2... 2 are sequentially adjacent to each other in the treatment tank 11, the side surfaces of the side plates 3a and 3a of the large-diameter filter elements 1a and 1a are overlapped, and the small-diameter filter elements 1b and 1b are idle. With the outer peripheral portions of the annular plates 6 and 6 being inserted into the annular slit grooves 5a and 5a of the large-diameter filter elements 1a and 1a, for example, the solid content outlets 13 are arranged in two rows so as to sandwich the upper and lower sides. The rotating shafts 7 of the laminated rotating bodies 2... 2 are supported on both side walls of the treatment tank 11. Although not shown in the figure, a filtrate chamber is attached to one outer side of the treatment tank 11, and the above-mentioned feed is made through a flow hole formed around the support portion of each rotary shaft 7. The liquid path 8 and the filtrate chamber are electrically connected. Moreover, the front-end | tip part of each rotating shaft 7 ... 7 is derived | led-out by the other outer side of the processing tank 11, and the sprocket wheel is each fitted by the derived | lead-out front-end | tip part. In order to move the undiluted solution supplied from the supply port 12 in the opening direction of the solid content discharge port 13, the upper row of the rotary rotor groups 2 ... 2 and the lower row of the rotary rotor groups 2 ... 2 are mutually connected. The motor shaft is chain-transmitted to each sprocket wheel so that it rotates in the opposite direction.
[0009]
[Action]
The laminated rotator 2... 2 is rotated at a low speed in a predetermined direction by driving the prime mover, and the stock solution is supplied into the treatment tank 11 from the stock solution supply port 12. As the laminated rotating body 2... 2 rotates, the liquid component is transferred from the notch 10 in the annular slit groove 5 through the liquid supply path 8... 8 into the filtrate chamber. Concentrated as it is moved in the direction of opening of the liquid, gradually dehydrated, and the solid content having a low water content is discharged from the outlet 13, and the liquid in the filtrate chamber is discharged to the outside through the liquid outlet at the bottom. The During rotation of the laminated rotator 2... 2, the idler plates 6... 6 stop in an eccentric state or rotate eccentrically with a speed difference from the rotator 2. In the separation process, the self-cleaning effect acts on the groove wall surfaces of the annular slit grooves 5a and 5b, and the forced movement of the filtered fine particles occurs.
[0010]
【The invention's effect】
According to the solid-liquid separation device of the present invention, the idler plate 6 having the inner peripheral edge formed in a non-circular shape is eccentrically contacted with the laminated rotator 2... 2, so that the deep portions of the annular slit grooves 5 a and 5 b The clogging of the solid matter can be prevented by the self-cleaning effect, and the through hole 9 of the intermediate plate 4b in the small-diameter filter element 1b has a notch 10 that opens from the annular slit groove 5b to the liquid feeding path. Therefore, the guidance of the filtrate to the liquid feeding path 8 is smooth, and an effective solid-liquid separation operation is performed in combination with the fact that the overlapping area of each plate is substantially increased.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view of a solid-liquid separator of the present invention.
FIG. 2 is a cross-sectional plan view showing an adjacent aspect of a plurality of laminated rotating bodies in the solid-liquid separation device of the present invention.
FIG. 3 is a longitudinal side view showing an adjacent aspect of a plurality of laminated rotating bodies in the solid-liquid separator of the present invention.
FIG. 4 is a cross-sectional plan view of a large-diameter filter element constituting a laminated rotator in the solid-liquid separator of the present invention.
FIG. 5 is a cross-sectional plan view of a small-diameter filter element constituting a laminated rotator in the solid-liquid separator of the present invention.
FIG. 6 is a side view of a circular side plate constituting a large-diameter filter element in the solid-liquid separation device of the present invention.
FIG. 7 is a side view of an intermediate plate constituting a large-diameter filter element in the solid-liquid separator of the present invention.
FIG. 8 is a side view of a circular side plate constituting a small-diameter filter element in the solid-liquid separator of the present invention.
FIG. 9 is a side view of an intermediate plate constituting a small-diameter filter element in the solid-liquid separator of the present invention.
FIG. 10 is a side view of an idler plate in the solid-liquid separator of the present invention.
[Explanation of symbols]
1a Large-diameter filter element 1b Small-diameter filter element 2 Laminated rotating body 3a Large-diameter filter element circular side plate 3b Small-diameter filter element circular side plate 4a Large-diameter filter element intermediate plate 4b Small-diameter filter element intermediate plate 5a Large-diameter filter element Annular slit groove 5b Annular slit groove 6 of small-diameter filter element Ring plate 7 Rotating shaft 8 Liquid feed path 9 Through hole 10 Notch portion 11 Treatment tank 12 Stock solution supply port 13 Solid content discharge port A Short inner circumference of the ring plate Diameter B The inner circumference long diameter of the idler plate

Claims (1)

A large-diameter filter element with a difference in diameter between the side plate and the inter-plate so that an annular slit groove is held on the outer periphery of the inter-plate sandwiched between the circular side plates, and a smaller diameter than that with the same configuration as the above-described filter element. And a plurality of small-diameter filter elements in which a circular ring plate, which will be described later, is fitted in the annular slit groove, are alternately assembled on the same rotational shaft to form a laminated rotator, and the laminated rotator has an axial direction. Concentric through holes are provided in each of the interplates and the side plates so that the liquid feeding path is penetrated, and only the through holes formed in the interplates of the small-diameter filter element among these through holes are annular slit grooves on the outer periphery of the disc. The outer diameter of the free ring plate that fits into the annular slit groove in the small-diameter filter element is larger than the outer diameter of the side plate, and the inner diameter is the short diameter portion, which is the same as the outer diameter of the intermediate plate. It is formed in a non-circular shape such as an ellipse so that it has a diameter or slightly larger diameter and a larger diameter than the outer diameter of the intermediate plate at the long diameter portion. A plurality of the laminated rotating bodies are sequentially adjacent to each other in a treatment tank having a solid content discharge port, the outer peripheral side surfaces of the side plates of the large-diameter filter element are overlapped, and the outer peripheral portion of the idler plate of the small-diameter filter element is filtered through the large diameter. A solid-liquid separation device, characterized in that a liquid extraction hole that is inserted into an annular slit groove of an element and faces a liquid feeding path of a laminated rotator is formed in a side wall of a processing tank.

Images