JP2000140707A - Centrifugal separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten washing/replacing work for taking out the solid accumulated in a rotary body to a large extent and to facilitate this work, in a centrifugal separator wherein a mixed liquid containing a solid is introduced into the rotary body to be separated into a liquid and a solid, by attaching a cylindrical solid bonding member made of a metal to the interior of the rotary body in a freely detachable manner. SOLUTION: In a centrifugal separator having a cylindrical rotary body 30 separating a mixed liquid into a solid and a liquid and a flow distribution plate 34 housed in the rotary body to rotate along with the rotary body, a cylindrical solid bonding member 33 is provided in the rotary body 30 in a freely detachable manner. An engaging recessed part is provided to the inside of the lower end part of the rotary body 30 and an engaging projected part 36b capable of being engaged with the engaging recessed part in female and male relation is provided to the cylindrical solid bonding member 33 and the solid bonding member 33 is formed of a metal member, and a draw-out hole is provided to the flow distribution plate 34 near to the center position on the lower side thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifugal separator in which a rotating body for separating a liquid mixed with a solid, that is, a mixed liquid into a solid and a liquid has a double structure.

[0002]

2. Description of the Related Art As shown in FIG. 4, a centrifuge apparatus according to the prior art is rotatable via a drive motor 11 attached to a frame 10 and a drive belt 13 attached to a pulley 12 of the drive motor 11. And the centrifuge 1 attached to the same frame 10 as the drive motor 11
And 4.

The centrifugal separator 14 includes a rotating body 15 rotated by a driving belt 13, a bearing 16 for receiving a central axis of the rotating body 15, a rotating body cover 17 for rotatably covering the rotating body 15, and a rotating body 15. The rotating body 15 includes a mixed liquid input section 18 for inputting a mixed liquid below the central axis, and a rotating liquid 15 having a separated liquid outlet 19 above the central axis.

[0004] As shown in FIG.
A mixed liquid separation chamber 20 communicating with the mixed liquid inlet 18 for inputting the mixed liquid inside the cylindrical shape is provided, and a bottom lid 21 screwed to and engaged with the rotating body is provided on the lower side. Structure. Further, the mixed liquid separation chamber 20 has a structure communicating with a separated liquid outlet 19 for discharging the separated liquid to an upper portion thereof. Further, the mixed liquid separation chamber 20
As shown in FIG. 5 (B), a solid object attachment body 22 formed of a cylindrical roll paper member attached along the inner peripheral surface and a rectifying plate 23 that rotates together with the rotating body 15 are built in It has a structure that was made.

[0005] The solid matter adhering body 22 is formed in a cylindrical shape having upper and lower portions opened, and is formed by rolling one sheet of paper.

The rectifying plate 23 is formed into a shape that can be accommodated in the mixed liquid separation chamber 20 having a cylindrical shape, and is provided with three rectangular plate members 23a.
Have a three-bladed structure in which one end in the longitudinal direction is joined at the same angle. An elastic member 23b, for example, a plate spring, which comes into contact with the inner peripheral surface of the mixed liquid separation chamber 20 is provided at a free end in the longitudinal direction of the plate member 23a. 20 is supported on the inner peripheral surface. Further, a drawer hole 27 for engaging with a scratch bar or the like is provided at an outer position near the lower end of the three-plate member 23a.

In the centrifugal separator having such a structure, as shown in FIG. 5 (B), a solid adhered body 22 made of a roll-shaped paper for adhering the solid to the rotating body 15 is arranged from the lower side. It is inserted and attached so as to be attached to the inner peripheral surface of the mixed liquid separation chamber 20, and then the current plate 23 is inserted and supported by the elastic member 23b of the three-plate member 23a in the inner peripheral surface direction of the separation chamber 20. While pushing, a scratch bar or the like is engaged with the drawer hole 27 and pushed into the depth direction. Then, the screw-in type bottom cover 21 is screwed to the rotating body 15 to complete the mounting and assembly.

The rotating body 15 assembled as described above
Is, as shown in FIG.
When the rotating body 15 is rotated by inputting the mixed liquid 24 from 8, the solid 25 and the liquid are separated, and the separated liquid 26 is separated.
Is discharged from the separated liquid outlet 19, and the solid matter 25 is accumulated on the lower side of the solid matter attached body 22 attached to the inner peripheral surface of the mixed liquid separation chamber 20 by centrifugal force (initial situation). When used in such a state, the solid matter 2 accumulated on the lower side
5 gradually accumulates along the upper direction of the inner peripheral surface, and the accumulated amount increases (in use). When the accumulated amount of the solid 25 increases, the rotation of the current plate 23 is hindered,
The separation function has also been reduced and the limit of use has been reached (before replacement). In such a case, the apparatus is stopped, and it is time to clean the mixed liquid separation chamber 20 and replace the solid matter adhering body 22 (maintenance), and perform cleaning and replacement work.

In the cleaning / replacement operation, the bottom cover 21 (see FIG. 5A) screwed to the rotating body 15 is removed, and the plate member 23a is removed.
The solid material closing the drawer hole 27 is removed by tapping or the like, and the solid material 25 attached to the solid material attached body 22 of the roll paper member is removed together with the solid material attached body 22. Then, a scratch bar is hooked on the drawing hole 27 and the current plate 23 is taken out, and the inside of the mixed liquid separation chamber 20 and the bottom cover 2 are removed.
Wash with 1. After washing, the washed mixed liquid separation chamber 20
Inside, a roll-shaped paper member as a new solid matter attachment body 22 is attached so as to be attached, and the current plate 23 is pushed in, and the bottom cover 21 is screwed to complete a series of washing and replacing operations. After the washing / replacement operation is completed, the rotating body 15 is attached to the original position, and the mixed liquid 24 is injected and rotated to separate the liquid and the solid.

[0010]

However, in the above-described cleaning and replacing operation of the rotating body to which the solid matter adheres, if the solid matter has a strong adhesive force, it is difficult to remove the solid matter even if it is removed with a scratch bar, and the work of removing the solid matter is complicated. Therefore, there is a problem that it takes time for cleaning and replacement work.

[0011] Therefore, there is a problem that it is necessary to solve the problem of a solid substance adhering body to which a solid substance adheres in the mixed liquid separation chamber so that the solid substance can be easily removed.

[0012]

In order to solve the above-mentioned problems, a centrifuge according to the present invention comprises a cylindrical rotating body for separating a mixed liquid into a solid and a liquid, and a rotating body accommodated inside the rotating body. And a rectifying plate that rotates together with the rotating body, wherein the solid body attached to the rotating body is detachably provided inside the rotating body.

An engaging recess is provided inside the lower end portion of the rotating body, and an engaging protrusion is provided on the cylindrical solid attachment body so as to be able to engage with the engaging recess in a male and female relationship. That the solid adhered body is formed of a metal member,
Further, a drawer hole is provided in the current plate near the center position on the lower side.

As described above, by adopting a structure in which the solid adhered body is detachably provided inside the rotating body, the solid adhered body having the solid matter adhered thereto can be taken out of the rotating body as it is. Since the accumulated solids can be taken out without performing operations such as scraping the inside of the rotating body, the time for cleaning and replacing the inside of the rotating body can be greatly reduced and simple operations can be performed.

Further, since the solid adhered body is formed in a cylindrical shape made of metal, it can be used repeatedly, and it is not necessary to replace it with a new one every time washing and replacing work, so that the running cost can be reduced. .

[0016]

Next, an embodiment of a centrifuge according to the present invention will be described with reference to the drawings. In addition, since it is the same as the centrifugal separator attached to the drive motor and the like described in the related art, the description thereof is omitted (see FIG. 4).

As shown in FIG. 1, the centrifugal separator according to the present invention has a structure in which a rotating body constituting the centrifuge is improved, and is rotated by a drive belt transmitted to a drive motor (not shown). A rotating body 30 having a cylindrical shape, and a detachable metal cylindrical solid body 33 attached along an inner peripheral surface 32 of a mixed liquid separation chamber 31 formed inside the rotating body 30; A rectifying plate 34 which is attached to the central support shaft of the liquid separation chamber 31 and rotates together with the rotating body 30;
And a bottom cover 35 which is screwed from the lower side of the rotating body 30 to cover.

The solid attachment body 33 is made of a metal member or the same material as the material forming the rotating body 30.
The diameter of the inner peripheral surface 32 and the diameter of the outer periphery of the solid cylindrical body 33 of the metal cylinder are substantially the same. The solid adhered body 33 formed in a metal cylindrical shape may be provided with a slit 33a in the longitudinal direction so that the diameter can be increased or decreased. When the solid matter attachment body 33 made of the same material as the rotating body 30 is used in this way, it is not necessary to replace the solid matter attachment body with a new one every washing and replacement work as compared with the case of using the roll paper described above. It can be used repeatedly, and the running cost can be reduced.

Further, a structure in which engagement protrusions 36b are formed at the lower end of the solid adhered body 33 formed in a metal cylindrical shape, and four engagement protrusions 36b at equal intervals in the embodiment. It has become. The engagement convex portion 36b is a so-called engagement means, and is formed to have a size to be engaged with the engagement concave portion 36a provided at the lower end portion on the inner peripheral surface 32 of the rotating body 30. The material forming the solid adhered body 33 and the engagement convex portion 36b
The structure can be made durable in accordance with the intended use of the rotating body 30, that is, the properties of the mixed liquid to be separated. More specifically, the durability may be improved by increasing the thickness of the metal cylindrical shape or increasing the size of the engagement convex portion 36b.

At the lower end of the mixed liquid separation chamber 31, there is provided an engaging concave portion 36a cut out to a size that can be engaged with the engaging convex portion 36b provided at the lower end of the solid adhered body 33. ing. The engaging concave portion 36a has a shape corresponding to the size of the engaging convex portion 36b of the solid matter adhered body 33, and has a structure of engaging in a male and female relationship.

The rectifying plate 34 is shaped so as to be accommodated in the mixed liquid separation chamber 31, and the three rectangular plate members 40 are spaced apart at equal intervals so that one end in the longitudinal direction has the same angle. Are joined to form a three-blade structure. A structure in which a drawer hole 41 which is provided near a center position on the lower side of the three-blade structure and which engages with a scratch bar, and an elastic member 40 a, for example, a plate spring or the like, is provided at a free end in the longitudinal direction of the plate member 40. It has become. The elastic member 40 a contacts the inner peripheral surface of the mixed liquid separation chamber 31 to support the flow regulating plate 34 inside the mixed liquid separation chamber 31.

In the rotating body 30 having such a structure, first, a rectifying plate 34 is mounted inside the rotating body 30, and then, the engaging projection 36 of the solid substance attaching body 33 is attached to the inner peripheral surface 32 of the rotating body 30.
b is engaged with the engagement concave portion 36a, that is, is engaged and attached in a male and female relationship. The elastic member 4 of the current plate 34
The bottom cover 35 is pushed into the back while contacting and supporting the inner peripheral surface of the solid attachment portion 33, and the bottom cover 35 is engaged with the screw portion 37 of the rotating body 30 and attached. Thus, the rotating body 3
The centrifuge consisting of zeros is completed. Then, as shown in FIGS. 2 and 3, the liquid mixture 42 is rotated around the support shaft 38 (see FIG. 1), and the mixed liquid 42 is introduced from the mixed liquid inlet 39. Are separated. The separated liquid 43 is discharged from the separated liquid outlet 38b provided in the upper lid 38c of the rotating body 30, and the solids 44 are accumulated in a state where the solids 44 adhere to the solid attached body 33. Since the relationship between the separation liquid 43 and the solids 44 has been described in detail with reference to FIG. 6 in the related art, the description thereof will be omitted.

The solid matter accumulates and accumulates in the mixed liquid separation chamber 31 of the rotating body 30, and when the cleaning / replacement operation comes, the solid matter accumulated in the mixed liquid separating chamber 31 of the rotating body 30 is reached. An operation of taking out the object 44 is performed. This operation is performed by the solid matter adhered body 33 formed in a metal cylindrical shape.
The solids 44 attached to the rectifying plate 34 are drawn out of the holes 4
1 and a scratch bar is engaged to move the solid adhered body 3 downward.
3 and the current plate 34 are pulled out together as they are, and immersed in a washing tank (tank storing water) not shown. In this manner, the solid matter adhered body 33 to which the solid matter 44 is adhered is simply pulled out,
Only the operation of immersing in the cleaning tank eliminates the need for the operator to perform the operation of completely scraping. Since this drawer plate 34 has a drawer hole 41 for hooking a scratch bar near the center, no solid matter adheres. Therefore, the operation of removing the solid matter before hooking the scratching rod in the drawing hole 41 becomes unnecessary, and the scraping rod is hooked in the drawing hole 41 and the solid matter adhered body 33 on which the solid matter 44 is adhered together. Alternatively, the straightening plate 34 may be pulled out, and then the solid adhered body 33 may be pulled out.

[0024]

As described above, the centrifugal separator according to the present invention has a metal cylinder-shaped solid material adhering member on the inner peripheral surface where the solid material inside the rotating body where the mixed liquid is separated adheres. The detachable mounting allows cleaning / replacement of the inside of the rotating body to be cleaned / replaced by removing the solid adhered body to which the solid is adhered. There is an effect that the work can be easily performed and the scraping-out work can be omitted, so that the work can be reduced.

Further, since the solid adhered body is formed in the shape of a metal cylinder, the solid adhered body such as paper which has been replaced every time the washing and replacement work is not required, so that the running cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing the structure of a rotating body in a centrifuge according to the present invention.

FIG. 2 is a schematic bottom view of the rotating body as viewed from below with a bottom cover removed.

FIG. 3 is a schematic sectional view of the rotating body.

FIG. 4 is a schematic plan view of a centrifuge mounted on the same frame as a drive motor according to the prior art.

FIG. 5 is a plan view of a rotating body according to the related art;
(A) is an overall plan view of the rotating body with the bottom lid attached,
(B) is an explanatory view schematically showing the structure of the rotating body.

FIG. 6 is an explanatory diagram showing a state in which solid matter accumulates in a rotating body in a conventional technique.

[Explanation of symbols]

30; rotating body, 31; mixed liquid separation chamber, 32; inner peripheral surface, 3
3; solid deposit, 34; current plate, 35; bottom lid, 36
a: engaging concave portion, 36b; engaging convex portion, 37; screwing portion, 3
8; spindle, 39; mixed liquid inlet, 40; separated liquid outlet, 40a; elastic member, 41; draw-out hole, 42; mixed liquid, 43; separated liquid, 44;

Claims (4)

[Claims] 1. A centrifugal separator having a cylindrical rotating body for separating a mixed liquid into a solid and a liquid, and a rectifying plate housed inside the rotating body and rotating together with the rotating body. A centrifugal separator characterized in that a solid adhered body formed in a cylindrical shape is detachably provided inside a rotating body. 2. An engaging concave portion is provided inside a lower end portion of the rotating body, and an engaging convex portion capable of engaging with the engaging concave portion in a male-female relationship is provided on the cylindrical solid adhered body. The centrifuge according to claim 1, wherein: 3. The centrifuge according to claim 1, wherein the solid substance is formed of a metal member. 4. The centrifugal separator according to claim 1, wherein the straightening plate is provided with a drawing hole near a center position on a lower side.