CN211820889U - Check valve applied to centrifugal machine - Google Patents

Abstract

The utility model provides a be applied to centrifuge's check valve, including case and valve body, be equipped with first passageway, second passageway and cavity in the valve body, first passageway the cavity with the second passageway is put through in proper order, the case accept in the cavity, work as centrifuge during operation, the case receives centrifuge work produced centrifugal force and remove so that seal first passageway and/or the second passageway.

Description

Check valve applied to centrifugal machine

Technical Field

The utility model relates to a check valve field especially relates to a check valve for on centrifuge.

Background

The check valve is a valve in which an opening and closing member is automatically opened or closed by the force of medium flow to prevent the medium from flowing backwards. The check valve belongs to the automatic valve class, is mainly used on the pipeline of medium one-way flow, only allows medium to flow to one direction to prevent the accident.

When a centrifuge is used for centrifugation, there may be a case where two or more liquids are required to be in a separated state in a centrifuged state, and thus it is necessary to prevent the two or more liquids from being mixed using a check valve.

The check valve that uses at present adopts the case of taking the spring to realize the non return function, but along with, the spring is long-time to work under the exogenic action, because stress relaxation can produce micro permanent deformation, influences the non return effect of flowing, and in order to make the check valve be in the connected state, need change both sides pressure in order to produce the power and drive the case and open, especially to using at biological sample centrifugation layered centrifuge, to biological sample pressurization have probably destroyed biological sample.

SUMMERY OF THE UTILITY MODEL

The utility model provides a check valve for centrifuge is last reaches, and is easy and simple to handle, has improved life.

The utility model provides a be applied to centrifuge's check valve, including case and valve body, be equipped with first passageway, second passageway and cavity in the valve body, first passageway the cavity with the second passageway is put through in proper order, the case accept in the cavity, work as centrifuge during operation, the case receives centrifuge work produced centrifugal force and remove so that seal first passageway and/or the second passageway.

Furthermore, the cavity is provided with a mounting hole for mounting the valve core, and the mounting hole is provided with a sealing device.

Furthermore, the sealing device comprises a plug and a sealing ring.

Furthermore, the first channel and the second channel are respectively provided with a connector and a gasket.

Furthermore, the valve core is of a spherical structure, and the second channel is provided with a conical surface structure corresponding to the valve core, so that the valve core can move to block the second channel conveniently.

Furthermore, the valve core is made of steel.

Furthermore, the first channel is of a single-section vertically-distributed pipeline structure, and the second channel is of a pipeline structure with a right angle.

The utility model also provides a centrifuge including above-mentioned check valve, so that work as centrifuge is under operating condition, first passageway with the second passageway does not communicate.

Based on the technical scheme, the utility model utilizes the centrifugal force generated by the work of the centrifuge to move the valve core in the check valve arranged on the centrifuge so as to seal any channel, and the service life of the check valve is prolonged because the valve core has no spring device; when the centrifugal machine stops working, the centrifugal force is eliminated, the valve core does not seal the channel any more, and the operation is simple and convenient.

Drawings

FIG. 1 is a schematic structural view of a check valve applied to a centrifuge according to an embodiment of the present invention

In the figure, 10 is a check valve, 11 is a valve body, 12 is a valve core, 111 is a first channel, 112 is a second channel, 113 is a joint, 114 is a gasket, 115 is a cavity, 1151 is a sealing device, 1152 is a plug, and 1153 is a sealing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. It is to be understood that the drawings are designed solely for the purposes of illustration and description and not as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; either mechanically or electrically, and may be internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

It should be further noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, the present invention provides a schematic structural view of a check valve 10 applied to a centrifuge according to an embodiment, specifically, the check valve 10 includes a valve body 11 and a valve core 12. The valve body 11 includes a first passage 111, a second passage 112, and a cavity 115. The first passage 111, the chamber 112 and the second passage 115 are sequentially communicated. When the centrifuge is operated, a centrifugal force is generated in a direction as indicated by an arrow in the drawing, and the valve body 12 is moved by the centrifugal force to seal the first passage 111 and/or the second passage 112.

With the valve cartridge 12 being disposed within the cavity 115. In this embodiment, the valve core 12 is a spherical structure, a sealing surface that is matched with the valve core 12 to realize sealing is disposed at a communication position of the second channel 112 and the cavity 115, the sealing surface is a conical surface, and a larger diameter end of the conical surface is close to the cavity 115 so that the valve core 12 can move along the conical surface. The diameter of the valve core 12 is smaller than the height of the cavity, and the connection port of the first channel 111 and the cavity is arranged at the top end of the cavity 115, so that the valve core 12 falls on the bottom of the cavity under the condition of not being influenced by centrifugal force, and the channels are communicated.

As a preferred example, the material of the valve core 12 is steel, and in other embodiments, copper may be used as the material of the valve core 12.

The outward side of the cavity 115 is provided with a mounting hole for mounting the valve core 12, and the mounting hole is provided with a sealing device 1151, in this embodiment, the sealing device is a plug 1152 and a sealing ring 1153.

The first channel 111 and the second channel 112 are respectively provided with a connector 113 and a gasket 114 for connecting other pipes or cavities. In this embodiment, the connecting head 113 and the first and second passages 111 and 112 are both screwed, and in other embodiments, other connection manners such as interference fit may also be adopted.

When the centrifugal machine works, the device is firstly assembled once according to the connection relation and is vertically arranged on the centrifugal machine, and when the centrifugal machine works, the centrifugal force generated by the centrifugal machine enables the valve core 12 to move to be in contact with the sealing surface to form sealing, so that the liquid connected with the first channel 111 is separated from the liquid connected with the second channel 112; when the centrifuge stops working, the centrifugal force is removed and the cartridge 12 no longer seals the channel so that the liquid connected to the first channel 111 and the liquid connected to the second channel 112 can be mixed.

The utility model discloses a thereby centrifugal force that utilizes centrifuge to produce has improved check valve sealing performance's life-span as the liquid that drives valve element 12 and pastes the tight seal face separation first passageway 111 and second passageway 112 circulation.

Throughout the description and claims of this application, the words "comprise/comprises" and the words "have/includes" and variations of these are used to specify the presence of stated features, values, steps or components but do not preclude the presence or addition of one or more other features, values, steps, components or groups thereof.

Some features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, certain features of the invention, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable combination in different embodiments.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the present invention.

Claims (8)

1. The check valve applied to the centrifuge comprises a valve core and a valve body, wherein a first channel, a second channel and a cavity are arranged in the valve body, the first channel, the cavity and the second channel are sequentially communicated, and the valve core is contained in the cavity.

2. The check valve for a centrifuge of claim 1, wherein the cavity is provided with a mounting hole for mounting the cartridge, and the mounting hole is provided with a sealing means.

3. The check valve for a centrifuge of claim 2, wherein said sealing means comprises a plug and a sealing ring.

4. The check valve for a centrifuge of claim 1, wherein the first channel and the second channel are provided with a connector and a gasket, respectively.

5. The check valve applied to the centrifuge as claimed in claim 1, wherein the valve core is a ball structure, a sealing surface matched with the valve core to realize sealing is provided at a position where the second channel communicates with the cavity, the sealing surface is a conical surface, and a larger diameter end of the conical surface is close to the cavity so as to facilitate the movement of the valve core along the conical surface.

6. The check valve applied to the centrifuge as claimed in claim 5, wherein the diameter of the valve core is smaller than the height of the cavity, and the connection port of the first channel and the cavity is arranged at the top end of the cavity.

7. The check valve for a centrifuge according to any one of claims 1 to 6, wherein the valve body is made of steel.

8. A centrifuge comprising a check valve according to any one of claims 1 to 7.

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