KR101530565B1

KR101530565B1 - Casing assembly for centrifugal machine

Info

Publication number: KR101530565B1
Application number: KR1020130095170A
Authority: KR
Inventors: 이현근
Original assignee: 이현근
Priority date: 2013-08-12
Filing date: 2013-08-12
Publication date: 2015-06-22
Also published as: KR20150018956A

Abstract

The present invention relates to a casing assembly for a centrifuge, comprising: a casing rotated by a rotor; And a cap coupled to an upper portion of the casing, wherein the cap includes: an inlet port through which liquid to be separated flows; a cap body formed with an outlet port through which the separated liquid is discharged; A ceramic ring inserted into a lower portion of the cap body; A packing member coupled to an upper portion of the casing; And a lower end portion thereof is inserted and fixed in the packing member, and an upper surface thereof is exposed to the outside of the packing member and is contacted and rotated with the ceramic ring.

Description

[0001] CASING ASSEMBLY FOR CENTRIFUGAL MACHINE [0002]

The present invention relates to a casing assembly for a centrifuge, and more particularly, to a casing assembly for a centrifuge that can prevent external leakage of liquid to be separated.

The centrifugal separator is used for separating the liquid to be separated by centrifugal force. When the liquid to be separated is put into the centrifuge and rotated at high speed, the material can be separated according to the difference of particle size and density. The supernatant is composed of a material of comparatively small size and density, and a substance of comparatively large size and density is precipitated or deposited on the inner wall surface.

Such a centrifugal separator is disclosed in U.S. Patent Application No. 11-0096881 entitled "Vertical Centrifuge", and Registration No. 20-0430393 entitled "Centrifuge with Dual Cover".

Conventionally, the centrifugal separator is provided with a casing rotated by a rotor, and a cap coupled to an upper portion of the casing, into which a liquid to be separated is introduced. 1 is an exploded perspective view showing a structure of a cap 10 of a conventional centrifugal separator. As shown in the drawings, the conventional cap 10 includes a lower stopper 17 coupled to a casing (not shown), a rotary ring 15 coupled to the upper portion of the lower stopper 17, And a resilient stopper 11 disposed on the upper portion of the bearing 13. The bearing 13 includes a bearing 13,

In the conventional cap 10, the rotary ring 15 rotates together with the casing (not shown) in a state where the bearing 13 is fixed. At this time, an elastic member 11a is formed under the elastic stopper 11 to elastically press the bearing 13 toward the rotary ring 15 side.

However, in the conventional cap 10, the elastic member 11a of the elastic stopper 11 is not packed, and the centrifuged liquid in the interior of the conventional cap 10 may leak to the outside during high-speed rotation.

SUMMARY OF THE INVENTION An object of the present invention is to provide a casing assembly for a centrifuge which can prevent external leakage of liquid to be separated with a simple structure.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

The object of the invention can be achieved by a casing assembly for a centrifuge. A casing assembly for a centrifuge of the present invention comprises: a casing rotated by a rotor; And a cap coupled to an upper portion of the casing, wherein the cap includes: an inlet through which liquid to be separated flows; a cap body formed with an outlet through which the liquid to be separated is discharged; A ceramic ring inserted into a lower portion of the cap body; A packing member coupled to an upper portion of the casing; And a lower end portion thereof is inserted and fixed in the packing member, and an upper surface thereof is exposed to the outside of the packing member and is contacted and rotated with the ceramic ring.

Here, the packing member is made of a material having elasticity, and accommodates the lower region of the carbon bearing.

According to one embodiment, the carbon bearing includes a ring-shaped bearing body; A ring contact portion formed on an upper portion of the bearing body so as to be stepped at a diameter smaller than the diameter of the bearing body and in contact with the ceramic ring; And a packing receiving portion formed in a lower portion of the bearing body and received in the packing member.

On the other hand, the object of the present invention can be achieved by a casing assembly. A casing assembly for a centrifuge of the present invention comprises: a casing rotated by a rotor; And a cap coupled to an upper portion of the casing, wherein the cap includes: an inlet port through which liquid to be separated flows; a cap body formed with an outlet port through which the separated liquid is discharged; A carbon bearing inserted into a lower portion of the cap body; A packing member coupled to an upper portion of the casing; And the lower region is inserted into the packing member and the upper region includes a ceramic ring which is rotated in contact with the carbon bearing.

The casing for centrifugal separator according to the present invention can smoothly rotate the ceramic ring and the carbon bearing forming the cap smoothly to minimize friction generated during rotation and improve surface contact. Thus, even when the bearing is rotated, the contact with the ceramic ring is maintained, and the liquid to be separated from the inside can be prevented from being discharged to the outside.

In addition, the packing member disposed at the lower portion of the cap may be made of a material having an elastic force to absorb shock and vibration generated by the centrifugal force, thereby minimizing external discharge of the liquid to be separated.

FIG. 1 is an exploded perspective view showing a structure of a conventional centrifuge separator.
2 is a perspective view illustrating the construction of a casing assembly for a centrifugal separator according to the present invention,
3 is an exploded perspective view of a casing assembly for a centrifuge according to an embodiment of the present invention,
4 is a schematic view schematically illustrating the operation of a casing assembly for a centrifuge according to the present invention.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

FIG. 2 is a perspective view showing the construction of a casing assembly 1 for a centrifuge according to the present invention. FIG. 3 is a perspective view of a centrifugal separator according to a first embodiment of the present invention, It is a perspective view.

As shown in the figure, the casing assembly 1 for a centrifuge according to the present invention includes a casing 200 in which a rotation space for rotating a liquid to be separated is formed, and a cap 100 covering an upper portion of the casing 200 . Here, the centrifugal separator in which the casing assembly 1 for centrifugal separator according to the present invention is used is preferably used for separating blood, liquid food or the like for research and other purposes.

The cap 100 is coupled to the upper portion of the casing 200 to supply the liquid A to be separated into the casing 200. The cap 100 stably covers the casing 200 so that the liquid to be separated A is prevented from leaking to the outside while the casing 200 is rotating.

The cap 100 includes a cap body 110 through which the liquid to be separated A flows in and a ceramic ring 120 coupled to a lower portion of the cap body 110 and a carbon bearing (130), and a packing member (140) for receiving the lower portion of the carbon bearing (130).

The cap body 110 is disposed in the upper part to inject the liquid A to be separated into the inside and discharge the separated liquid B to the outside. The cap body 110 includes a supply pipe 111 and an inlet pipe 113 which is connected to one side of the supply pipe 111 and receives the liquid A to be separated, (Not shown).

Although not shown in the drawing, the inlet pipe 113 and the outlet pipe 115 are provided with opening and closing valves (not shown) for controlling opening and closing of the opening and closing valves, respectively. The discharge tube 115 is closed when the liquid A to be separated flows into the inlet tube 113 and both the inlet tube 113 and the discharge tube 115 are closed during the centrifugal operation in which the casing 200 rotates So that leakage of the liquid to be separated to the outside is blocked. Further, after the centrifugation is completed, the inflow pipe 113 is closed and only the discharge pipe 115 is opened so that the separated liquid B is discharged to the outside.

A ring coupling plate 117 is coupled to a lower portion of the supply pipe 111. An engaging groove (not shown) is recessed at a certain depth in the ring coupling plate 117 to receive the upper portion of the ceramic ring 120.

Here, the flow pipe 150 is coupled to the inside of the supply pipe 111 coaxially with the supply pipe 111. The separation target liquid A flowing into the supply pipe 111 is moved to the casing 200 and the separated liquid B which has been separated can be discharged via the flow pipe 150 via the supply pipe 111 .

The ceramic ring 120 is formed in a circular ring shape and is contact-supported with the carbon bearing 130. The ceramic ring 120 has a smooth surface so that the carbon bearing 130 is smoothly rotated. The upper region of the ceramic ring 120 is inserted and fixed in the ring coupling plate 117 and the lower region of the ceramic ring 120 is exposed to the lower portion of the ring coupling plate 117 to be in contact with the carbon bearing 130.

The carbon bearing 130 is disposed below the ceramic ring 120 and rotated together with the casing 200. The carbon bearing 130 rotates in contact with the lower portion of the ceramic ring 120 when rotated together with the casing 200 and the liquid to be separated A leaks between the carbon bearing 130 and the ceramic ring 120 It blocks things.

The carbon bearing 130 includes a bearing body 131 formed to have a predetermined diameter, a ring contact portion 133 formed to be stepped on the upper portion of the bearing body 131, a packing 133 formed to be stepped on the lower portion of the bearing body 131, And includes a receiving portion 135. Here, the ring contact portion 133 and the packing accommodating portion 135 are formed to be smaller in diameter than the bearing body 131, respectively. The ring contact portion 133 and the packing accommodating portion 135 are formed to protrude from the upper and lower portions of the bearing body 131, respectively.

The ring contact portion 133 is rotated with the protruded upper surface in contact with the lower end surface of the ceramic ring 120. The packing receiving portion 135 is fixed in a state of being seated inside the packing member 140. As a result, the carbon bearing 130 is rotated together with the casing 200 and the packing member 140.

The carbon bearing 130 may be formed of a carbon material or a slidable material. The carbon bearing 130 is also smoothly machined to minimize frictional force upon contact with the ceramic ring 120, thereby smoothly rotating the carbon bearing 130.

Here, the carbon bearing 130 and the ceramic ring 120 may be vertically shifted from each other. The carbon bearing 130 may be disposed under the ceramic ring 120 and the carbon bearing 130 may be coupled to the cap body 110 and the ceramic ring 120 may be connected to the packing member 140, respectively. In this case, the ceramic ring 120 and the carbon bearing 130 are contacted and rotated.

The packing member 140 is disposed between the casing 200 and the carbon bearing 130. The packing member 140 is formed of a material such as rubber or silicon having an elastic force so as to maintain airtightness and to exert an elastic force so that the liquid to be separated does not leak. That is, the packing member 140 also functions as a resilient member in the conventional cap 10 (FIG. 1).

The packing member 140 includes a packing body 141 having an upper surface and a lower surface opened, a seating surface 143 formed inside the packing body 141 to receive the carbon bearing 130, And a casing insertion portion 145 formed to extend downward and cover the upper portion of the casing 200.

The packing member 140 is formed to have a predetermined thickness so that an elastic force of a material can act on the packing member 140 as a whole. The inner diameter of the packing member 140 is formed to correspond to the outer diameter of the packing receiving portion 135 so that the packing receiving portion 135 is fit on the receiving surface 143. Accordingly, when the casing 200 is rotated by the rotor (not shown), rotational force can be transmitted to the carbon bearing 130.

Meanwhile, a flow pipe 150 is coupled to the inside of the cap 100. The flow pipe 150 is integrally or separately formed with the supply pipe 111 so that the liquid A to be separated is supplied into the casing 200 or the separated liquid B is supplied from the casing 200 to the discharge pipe 115 . The flow tube (150) extends to the inside of the casing (200).

The casing 200 is coupled to the lower portion of the cap 100 and forms a space through which the liquid to be separated A flows. Although not shown in the drawing, a rotor (not shown) is coupled to the lower portion of the casing 200 and rotated.

The operation of the casing 200 for a centrifuge according to the present invention having such a configuration will be described with reference to Figs. 2 to 4. Fig.

The operator joins the cap 100 to the top of the casing 200. The packing member 140 is coupled to the upper surface of the casing 200 and the carbon bearing 130 is fixed on the packing member 140. [ At this time, only the packing receiving portion 135 is inserted into the packing member 140, and the bearing body 131 and the ring contacting portion 133 are exposed to the outside.

A ceramic ring 120 is coupled to the lower portion of the cap body 110 and a lower portion of the ceramic ring 120 is seated on the ring contact portion 133.

In this state, when the operator supplies the separation target liquid A to the inlet pipe 113, the separation target liquid A is supplied into the casing 200 via the supply pipe 111 and the flow pipe 150. When the casing 200 rotates and the rotor 200 rotates, the liquid to be separated A is rotated in the casing 200 by the centrifugal force. Due to the difference in density and weight, the heavy material moves to the bottom of the casing 200 The separating liquid B adheres to the wall surface or precipitates and the light material, that is, the separating liquid B floats inside the casing 200.

When centrifugal separation is completed and decompression is applied at the end of the discharge pipe 115, the separated liquid B which has been separated from the inside of the casing 200 is moved along the flow pipe 150 and discharged to the discharge pipe 115.

In this centrifugal separation process, the carbon bearing 130 is rotated together with the rotation of the casing 200, and is kept in contact with the ring contact portion 133. At this time, since the packing member 140 elastically flows up and down over a certain range, it is possible to absorb the impact generated by the rotation and to prevent the liquid to be separated from leaking to the outside due to the impact.

The embodiments of the centrifugal casing assembly of the present invention described above are merely illustrative and those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. You will know very well. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

1: Casing assembly 100: Cap
110: cap body 111: supply pipe
113: inlet pipe 115: outlet pipe
117: ring-
120: Ceramic ring 130: Carbon bearing
131: bearing body 133: ring contact portion
135: packing receiving part 140: packing member
141: packing body 143: seat surface
145: casing insertion portion 150:
200: casing

Claims

A casing rotated by the rotor;
And a cap coupled to an upper portion of the casing,
The cap
A cap body formed with an inlet through which the liquid to be separated flows into and an outlet through which the separated liquid is separated;
A ceramic ring inserted into a lower portion of the cap body;
A packing member coupled to an upper portion of the casing, the packing member being made of a material having elasticity;
And a lower end portion of the packing member is inserted and fixed, and an upper surface of the packing member is exposed to the outside of the packing member and is rotated in contact with the ceramic ring,
Wherein the packing member comprises:
A packing body having an upper surface and a lower surface opened;
A seating surface formed in the packing body and on which the carbon bearing is seated;
And a casing insertion portion extending to a lower portion of the packing main body to cover an upper portion of the casing,
Wherein the carbon bearing
A ring-shaped bearing body;
A ring contact portion formed on an upper portion of the bearing body so as to be stepped at a diameter smaller than the diameter of the bearing body and in contact with the ceramic ring;
And a packing receiving portion formed at a lower portion of the bearing body so as to be stepped at a diameter smaller than the diameter of the bearing body and received in the packing member,
And the packing receiving portion is forcedly fitted on the seating surface.

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