JP2518212Y2 - Centrifuge - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention is applicable to, for example, surface treatment, cleaning,
The present invention relates to a centrifugal device used for liquid removal and the like.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, in this type of centrifugal device (1), an outer container (2) with a lid (3) and a rotatable outer container (2) can be rotated. Perforated inner tank attached to (4)
And a motor (5) for rotating the porous inner tank (4), and a rotating shaft (6) penetrates from the bottom of the outer container (2),
The rotating shaft (6) is a covered cylinder that is erected from the bottom of the outer container (2).
The periphery is covered by (7) and supported by bearings (8), and the central cylinder (9) of the multi-hole inner tank (4) is covered by the covering cylinder.
It is attached to the rotating shaft (6) via (7), and an O-ring (10) is provided between the covering cylinder (7) and the rotating shaft (6) at the upper end of the covering cylinder (7). It is intervening.

[0003]

In the above-mentioned conventional configuration, for example, the treatment liquid S such as the surface treatment liquid or the cleaning liquid is filled in the outer container (2), and the object W to be treated is put in the inner tank (4). ,motor
(5) rotates the inner tank (4) through the rotating shaft (6) to perform the surface treatment and cleaning of the object W to be processed, and the outer container (2)
The treatment liquid S is drained from the above, the inner tank (4) is rotated, and the liquid adhering to the workpiece W is drained. However, when the processing liquid S is filled in the outer container (2), the central cylinder (9) of the inner tank (4) and the rotating shaft (6)
Between the cover tube (7) and the O-ring (10)
There is a problem that the processing liquid S invades to the above position, corrodes the O-ring (10) and reaches the bearing (8), corrodes the bearing (8) and hinders the rotation of the rotating shaft (6). is there.

[0004]

[Means for Solving the Problems] As a means for solving the above-mentioned conventional problems, the present invention provides an outer container (12) and a porous inner tank (14) rotatably mounted in the outer container (12). And a drive source (15) for rotating the porous inner tank (14), the outer container (12) is penetrated by a rotating shaft (16) from the bottom, and the rotating shaft (16)
Is covered by a covering cylinder (17) standing from the bottom of the outer container (12), and a central cylinder (19) is erected in the porous inner tank (14), and the central cylinder (19) is The rotating shaft (1
6), and the covering cylinder (17) at the upper end of the covering cylinder (17)
An O-ring (20) is interposed between the rotary cylinder (16) and the rotary shaft (16), and a sealing material (2) is provided between the covering cylinder (17) and the upper surface of the central cylinder (19).
The present invention provides a centrifuge (11) with the interposition of (1).

[0005]

The processing liquid S is put in the outer container (12), the object W is put in the porous inner tank (14), and the porous inner tank (14) is driven by the driving source (15).
Is rotated and the treatment liquid S is brought into contact with the object W to be treated. The treatment liquid S is filled in the outer container (12) and enters the gap between the central cylinder (19) of the inner tank (14) and the covering cylinder (17) of the rotating shaft (16). (17) At the upper end, the central tube (1
It is blocked by the sealing material (21) interposed between the upper surface of 9) and the upper surface of 9), and is prevented from reaching the O-ring (20).

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to an embodiment shown in FIGS. 1 and 2. A centrifuge (11) is an outer container with a lid (3).
(12), consisting of a porous inner tank (14) rotatably mounted in the outer container (12), and a motor (15) as a drive source for rotating the porous inner tank (14), From the bottom of the outer container (12) a rotary shaft (16) having a screw portion (16A) at the tip penetrates,
The rotating shaft (16) is covered by a covering cylinder (17) standing from the bottom (12A) of the outer container (12) and between the covering cylinder (17) and the rotating shaft (16). A bearing (18) is interposed to support the rotary shaft (16).

A central cylinder (19) is erected on the porous inner tank (14), and a perforated top plate (19A) is attached to the upper end of the central cylinder (19). ) Indicates the central cylinder (19) and the covering cylinder (17)
It is attached to the rotating shaft (16) through the central cylinder (1
9) In the hole of the top plate (19A) with holes, the male thread (1
6A) and let it go out above the hole.
A) is locked to the step portion (16B) of the rotary shaft (16). Then, the central cylinder (19) of the inner tank (14) is attached to the rotary shaft (16) by screwing the female screw lid (22) onto the male screw portion (16A) of the rotary shaft (16) via the backing (23). Fix to 16).

A support ring (17A) is provided on the upper end of the covering cylinder (17).
Is attached, and the support ring (17A) has a rotating shaft (16)
An O-ring (20) is supported between the top plate and the top plate (19A), which is the upper surface of the central cylinder (19), and a sealing material (21) is supported between the top ring and the top plate (19A). The sealing material (21) is made of felt, rubber, plastic, or the like, but a material such as felt, rubber containing a water-absorbing polymer, or plastic that expands by absorbing liquid is desirable.

A pulley (24) is attached to the lower end of the rotary shaft (16), and the pulley (24) is connected to the pulley (26) of the motor (15) via a belt (25). Outer container (12)
An outlet (27) having a valve (28) is extended from the bottom (12A) of the centrifugal device (11), and the centrifuge (11) is supported by a mount (29).

In the centrifuge (11), a treatment liquid S such as a surface treatment liquid or a cleaning liquid is placed in the outer container (12), and an object to be treated W is placed in the porous inner tank (14) and a motor (15) is placed therein. The inner tank (14) is rotated by the rotating shaft (16) to bring the object W into contact with the processing liquid S for processing. The treatment liquid S enters the gap between the central cylinder (19) of the inner tank (14) and the covering cylinder (17) of the rotating shaft (16) as shown by the arrow in FIG. It is blocked by the seal material (21) interposed between the support ring (17A) and the top plate (19A) of the central tube (19) and does not reach the O-ring (20). When the sealing material (21) is made of a material that absorbs liquid and expands, the blocking effect becomes more reliable. Bearings (18) supporting the rotating shaft (16) in this way
Etc. are prevented from being corroded by contact with the processing liquid S.

After the treatment, the valve (28) of the discharge port (27) is opened to discharge the treatment liquid S from the outer container (12), and the inner tank (14) is further rotated so that the treatment liquid S adheres to the workpiece W. The processing liquid S present is shaken off by centrifugal force.

[0012]

Therefore, in the present invention, since the support mechanism of the rotating shaft is not corroded by the processing liquid filled in the outer container, the centrifugal device is less likely to malfunction and the durability is improved.

[Brief description of drawings]

 1 and 2 show an embodiment of the present invention.

1] Side sectional view

FIG. 2 is an exploded perspective view of a central cylinder upper end portion.

FIG. 3 is a side sectional view of a conventional example.

[Explanation of symbols]

 11 Centrifuge 12 Outer container 14 Porous inner tank 15 Motor (driving source) 16 Rotating shaft 17 Covering cylinder 17A Support ring 19 Center cylinder 19A Perforated top plate 20 O-ring 21 Sealing material

Claims (1)

(57) [Scope of utility model registration request] 1. An outer container, a perforated inner tank rotatably mounted in the outer container, and a drive source for rotating the perforated inner tank. A rotating shaft penetrates from the bottom of the outer container. Then
The circumference of the rotating shaft is covered by a covering cylinder that is erected from the bottom of the outer container, and a central cylinder is erected in the porous inner tank, and the central cylinder is attached to the rotating shaft through the covering cylinder. An O-ring is interposed between the covering cylinder and the rotary shaft at the upper end of the covering cylinder, and a sealing material is interposed between the covering cylinder and the upper surface of the central cylinder. Centrifuge