CN211756042U - Centrifuge rotor positioning device - Google Patents

Abstract

The utility model discloses a centrifuge rotor positioner, it includes location motor and position sensor, and the location motor is connected to the centrifuge motor that is used for installing the rotor through clutching mechanism, and clutching mechanism includes one-way bearing, and one-way bearing includes the circle layer that two mutual covers were established, and the location motor is connected with wherein round layer, and centrifuge motor is connected with another circle layer. The centrifugal motor is connected with the positioning motor through the one-way bearing, and when the centrifugal motor normally operates, the centrifugal motor can freely rotate relative to the positioning motor; when the rotor on the centrifugal motor is reset, the positioning motor rotates reversely, so that the rotor on the centrifugal motor is driven to rotate and position through the one-way bearing. The utility model discloses under the prerequisite that does not influence centrifugal motor normal use, can realize the accurate location of rotor, need not manual operation, improve experimental efficiency.

Description

Centrifuge rotor positioning device

Technical Field

The utility model relates to a centrifuge rotor positioner among the centrifuge technical field.

Background

The centrifugal machine is widely applied to chemical engineering, petroleum, food processing, pharmacy, nuclear energy industry and other departments. With the increasingly wide application of industrial automation, centrifugal sample taking and placing is gradually changed into automation, so that the rotor positioning of the centrifuge becomes a difficult problem in the industry. After the centrifugal process of the existing centrifugal machine is finished, the position where the rotor stops is usually unfixed, manual assistance is often needed, the operation is not only inconvenient, but also accurate positioning can not be carried out, and the centrifugal machine is not beneficial to subsequent centrifugal operation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a centrifuge rotor positioner, it can carry out accurate location to the centrifuge rotor after using.

According to the utility model discloses an embodiment of the first aspect provides a centrifuge rotor positioner, it includes location motor and position sensor, the location motor is connected to the centrifuge motor that is used for installing the rotor through clutching mechanism, clutching mechanism includes one-way bearing, one-way bearing includes the circle layer that two mutual covers were established, the location motor is connected with one of them circle layer, centrifuge motor is connected with another circle layer.

According to the utility model discloses the first aspect embodiment, furtherly, the circle layer is outer circle layer and inner circle layer respectively, the outer circle layer is connected with the positioning motor, the inner circle layer is connected with the centrifugal motor.

According to the utility model discloses the first aspect embodiment, furtherly, the circle layer is outer circle layer and inner circle layer respectively, the outer circle layer is connected with the centrifugal motor, the inner circle layer is connected with the positioning motor.

According to the utility model discloses first aspect embodiment, furtherly, the outer lane layer passes through connecting sleeve and is connected with centrifugal motor, a pot head of connecting sleeve is established at centrifugal motor's caudal axis end, the other pot head of connecting sleeve is established in the outside on outer lane layer.

According to the utility model discloses the embodiment of the first aspect, furtherly, be equipped with the step in the connecting sleeve, one-way bearing fixes the path section at the connecting sleeve, the big footpath section at the connecting sleeve is fixed to centrifugal motor's caudal peduncle end.

According to the utility model discloses the first aspect embodiment, furtherly, the inner circle layer passes through the connecting piece and is connected with the positioning motor, the one end of connecting piece is equipped with the blind hole, the output of positioning motor inserts fixedly in the blind hole of connecting piece, the other end of connecting piece inserts fixedly in the inner circle layer.

According to the utility model discloses the embodiment of the first aspect, furtherly, the positioning motor is step motor, the positioning motor is connected with the position sensor electricity.

According to the utility model discloses first aspect embodiment, further, one-way bearing is one-way bearing.

The utility model has the advantages that: the centrifugal motor is connected with the positioning motor through the one-way bearing, and when the centrifugal motor normally operates, the centrifugal motor can freely rotate relative to the positioning motor; when the rotor on the centrifugal motor is reset, the positioning motor rotates reversely, so that the rotor on the centrifugal motor is driven to rotate and position through the one-way bearing. The utility model discloses under the prerequisite that does not influence centrifugal motor normal use, can realize the accurate location of rotor, need not manual operation, improve experimental efficiency.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of section A-A of FIG. 1;

fig. 3 is an exploded view of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and 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.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 3, a centrifuge rotor positioning device according to an embodiment of the present invention includes a positioning motor 30 and a position sensor 60, the positioning motor 30 is connected to a centrifuge motor 20 for installing a rotor 70 through a clutch mechanism, the clutch mechanism includes a one-way bearing 10, the one-way bearing 10 includes two ring layers sleeved with each other, the positioning motor 30 is connected to one of the ring layers, and the centrifuge motor 20 is connected to the other ring layer. The ring layers are an outer ring layer and an inner ring layer, respectively, and in this embodiment, the outer ring layer is connected with the centrifugal motor 20, and the inner ring layer is connected with the positioning motor 30. Preferably, the one-way bearing 10 is a one-way needle bearing, the positioning motor 30 is a stepping motor, and the positioning motor 30 is electrically connected to the position sensor 60. The position sensor 60 can detect the position of the sample on the rotor to determine whether the rotor has rotated to a specified position, thereby achieving the positioning of the rotor. In addition, as an equivalent alternative embodiment, the outer ring layer may be connected to the positioning motor 30 and the inner ring layer may be connected to the centrifugal motor 20, as needed.

The centrifugal motor 20 is connected with the outer ring layer through the connecting sleeve 40, that is, one end of the connecting sleeve 40 is sleeved at the tail shaft end of the centrifugal motor 20, and the other end of the connecting sleeve 40 is sleeved at the outer side of the outer ring layer. Because the connecting sleeve 40 is sleeved on the outer side of the outer ring layer, namely the one-way bearing 10 is positioned in the connecting sleeve 40, the contact between the one-way bearing 10 and the outside can be reduced, the one-way bearing 10 is effectively protected, and the working process is not influenced. In addition, the positioning motor 30 is connected with the inner ring layer through the connecting piece 50, one end of the connecting piece 50 is provided with a blind hole, the output end of the positioning motor 30 is inserted into the blind hole of the connecting piece 50 for fixation, and the other end of the connecting piece 50 is inserted into the inner ring layer for fixation.

Further, as a preferred embodiment, a step portion is provided in the connecting sleeve 40, the one-way bearing 10 is fixed on the small diameter section of the connecting sleeve 40, and the tail shaft end of the centrifugal motor 20 is fixed on the large diameter section of the connecting sleeve 40, that is, the end face of the tail shaft end of the centrifugal motor 20 is opposite to the shoulder of the step portion, so that the condition that the tail shaft end of the centrifugal motor 20 is axially displaced in the connecting sleeve 40 and then contacts with the one-way bearing 10 to damage the structure of the one-way bearing 10 is prevented.

The working principle of the present invention is illustrated below:

when the centrifugal motor 20 drives the rotor to rotate clockwise (counterclockwise), the tail shaft end of the centrifugal motor 20 also rotates clockwise (counterclockwise), and the tail shaft end of the centrifugal motor 20 is fixed on the one-way bearing 10 through the connecting sleeve 40, that is, the connecting sleeve 40 and the outer ring layer of the one-way bearing 10 also rotate along with the rotor, but the positioning motor 30 connected with the inner ring layer is not affected, and the output shafts of the inner ring layer and the positioning motor 30 are always in a static state. However, when the rotor is to be reset, the output end of the positioning motor 30 rotates in the counterclockwise (clockwise) direction, so that the inner ring layer of the one-way bearing 10 is driven to rotate by the connecting member 50, and the outer ring layer rotates integrally with the inner ring layer because the inner ring layer and the outer ring layer of the one-way bearing can only rotate relatively in one direction. The outer ring layer drives the tail shaft end of the centrifugal motor 20 to rotate through the connecting sleeve 40, so that the rotor rotates. When the rotor rotates to a designated position, the position sensor 60 sends an electric signal to stop the rotation of the positioning motor 30, thereby completing the positioning of the rotor.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims (8)

1. A centrifuge rotor positioning device is characterized in that: including positioning motor (30) and position sensor (60), positioning motor (30) are connected to centrifugal motor (20) that are used for installing rotor (70) through clutching mechanism, clutching mechanism includes one-way bearing (10), one-way bearing (10) include two circle layers of establishing each other cover, positioning motor (30) are connected with one of them circle layer, centrifugal motor (20) are connected with another circle layer.

2. The centrifuge rotor positioning apparatus of claim 1 wherein: the ring layer is respectively an outer ring layer and an inner ring layer, the outer ring layer is connected with a positioning motor (30), and the inner ring layer is connected with a centrifugal motor (20).

3. The centrifuge rotor positioning apparatus of claim 1 wherein: the ring layer is respectively an outer ring layer and an inner ring layer, the outer ring layer is connected with the centrifugal motor (20), and the inner ring layer is connected with the positioning motor (30).

4. The centrifuge rotor positioning apparatus of claim 3 wherein: the outer ring layer is connected with the centrifugal motor (20) through a connecting sleeve (40), one end of the connecting sleeve (40) is sleeved at the tail shaft end of the centrifugal motor (20), and the other end of the connecting sleeve (40) is sleeved on the outer side of the outer ring layer.

5. The centrifuge rotor positioning apparatus of claim 4 wherein: a step part is arranged in the connecting sleeve (40), the one-way bearing (10) is fixed on the small-diameter section of the connecting sleeve (40), and the tail shaft end of the centrifugal motor (20) is fixed on the large-diameter section of the connecting sleeve (40).

6. The centrifuge rotor positioning apparatus of claim 3 wherein: the inner ring layer is connected with the positioning motor (30) through the connecting piece (50), a blind hole is formed in one end of the connecting piece (50), the output end of the positioning motor (30) is inserted into the blind hole of the connecting piece (50) to be fixed, and the other end of the connecting piece (50) is inserted into the inner ring layer to be fixed.

7. The centrifuge rotor positioning apparatus of claim 1 wherein: the positioning motor (30) is a stepping motor, and the positioning motor (30) is electrically connected with the position sensor (60).

8. The centrifuge rotor positioning apparatus of claim 1 wherein: the one-way bearing (10) is a one-way needle bearing.

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