CN212856217U

CN212856217U - Centrifuge with unbalanced automatic shutdown function

Info

Publication number: CN212856217U
Application number: CN202021702518.7U
Authority: CN
Inventors: 王建辉
Original assignee: Hunan Michael Experimental Apparatus Co ltd
Current assignee: Hunan Michael Experimental Apparatus Co ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-04-02
Anticipated expiration: 2030-08-14

Abstract

The utility model discloses a centrifuge with unbalanced automatic shutdown function, this centrifuge with unbalanced automatic shutdown function including the casing that has accommodating space and locate centrifuge rotor and the response mechanism in the casing, response mechanism is including response module and magnet, and magnet fixed connection is on centrifuge rotor, and the response module sets up the magnetic field that is used for detecting the magnet with the magnet interval and whether changes. The utility model discloses a centrifuge with unbalanced automatic shutdown function judges whether the centrifuge rotor is in the balanced state by detecting the magnetic field change of the magnet, so as to control whether the centrifuge rotor continues to operate, when the induction module detects that the magnetic field changes, a signal is sent out, and a centrifuge control circuit controls the centrifuge to shut down; when the induction module detects that the magnetic field does not change, the centrifuge rotor keeps rotating, the unbalanced automatic shutdown function is realized, the use accuracy of the centrifuge is improved, the service life is prolonged, and the personal safety is ensured.

Description

Centrifuge with unbalanced automatic shutdown function

Technical Field

The utility model relates to a centrifuge technical field especially relates to a centrifuge with unbalanced automatic shutdown function.

Background

Centrifuges are electromechanical devices that utilize centrifugal force to separate components of a liquid from solid particles or a mixture of liquid and liquid. At present, the centrifugal machine on the market is unbalanced in operation because misoperation, if the placed sample is uneven or excessive, the centrifugal machine can be caused to run, huge vibration is generated, the centrifugal machine is easy to damage, the service life is short, and the injury of experimenters can be caused in the use process of the centrifugal machine.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem, an embodiment of the present invention is expected to provide a centrifuge with an unbalanced automatic shutdown function, which has an extended service life and is safe to use.

The technical scheme of the utility model is realized like this:

the utility model provides a centrifuge with unbalanced automatic shutdown function, is including the casing that has accommodating space and locate centrifuge rotor and response mechanism in the casing, response mechanism is including response module and magnet, the response module is fixed in on the casing, magnet fixed connection in on the centrifuge rotor, the response module with the magnet interval sets up and is used for detecting whether the magnetic field of magnet changes.

Preferably, the induction module comprises a fixed support fixed on the bottom plate of the casing, an installation cylinder inserted on the fixed support, and an inductor arranged in the installation cylinder, wherein the inductor is used for detecting the magnetic field change of the magnet.

Preferably, the inductor and the magnet are arranged at the same height.

Preferably, the sensor is a hall sensor.

Preferably, the fixing bracket is L-shaped.

Preferably, the fixing bracket is welded and fixed to the bottom of the casing.

Preferably, the magnet is a magnet.

Preferably, the centrifuge rotor comprises a motor disc fixed on the bottom plate of the casing and a rotating assembly arranged in the motor disc, and the magnet is adhered to the upper surface of the motor disc.

The embodiment of the utility model provides a centrifuge with unbalanced automatic shutdown function judges through detecting the magnetic field change of magnet whether the centrifuge rotor is in balanced state to whether control the centrifuge rotor to continue to operate, when the response module detects that the magnetic field changes, shows that the centrifuge rotor loses balance, the response module sends a signal to centrifuge control circuit, centrifuge control circuit control centrifuge shuts down; when the induction module detects that the magnetic field is not changed, the centrifugal machine rotor is indicated to be continuously in a balanced state, and the centrifugal machine rotor keeps rotating, so that the centrifugal machine is prevented from running in the unbalanced state, an unbalanced automatic shutdown function is realized, the use accuracy of the centrifugal machine is improved, the service life is prolonged, and the personal safety of operators is ensured.

Drawings

Fig. 1 is a schematic structural diagram of a centrifuge with an unbalanced automatic shutdown function according to the present invention;

FIG. 2 is a cross-sectional view of the centrifuge shown in FIG. 1 having an unbalanced automatic shutdown function;

FIG. 3 is a partial block diagram of the centrifuge shown in FIG. 2 having an unbalanced automatic shutdown function.

Detailed Description

In order to illustrate embodiments of the present invention or technical solutions in the prior art more clearly, the following description will be made in conjunction with the accompanying drawings in embodiments of the present invention to describe the technical solutions in the embodiments of the present invention clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Please refer to fig. 1 and fig. 2 in combination, wherein fig. 1 is a schematic structural diagram of a centrifuge with an unbalanced automatic shutdown function according to the present invention; fig. 2 is a cross-sectional view of the centrifuge shown in fig. 1 having an unbalanced automatic shutdown function. The centrifuge with the unbalanced automatic shutdown function comprises a machine shell 1 with a containing space, a centrifuge rotor 3 and an induction mechanism 5, wherein the centrifuge rotor 3 and the induction mechanism 5 are arranged in the machine shell 1.

The centrifuge rotor 3 comprises a motor disc 31 fixed on the bottom plate of the casing 1 and a rotating assembly 33 arranged in the motor disc 31, and the magnet 53 is fixedly connected to the motor disc 31 and used for detecting the jumping of the motor disc 31.

The sensing mechanism 5 includes a sensing module 51 and a magnet 53, and the sensing module 51 is fixed on the housing 1. The magnet 53 is fixedly connected to the centrifuge rotor 3, the induction module 51 and the magnet 53 are arranged at an interval to detect whether the magnetic field of the magnet 53 changes, whether the centrifuge rotor 3 is in a balanced state is judged by detecting the magnetic field change of the magnet 53, so as to control whether the centrifuge rotor 3 continues to operate, when the induction module 51 detects that the magnetic field changes, the centrifuge rotor 3 loses balance, the induction module 51 sends a signal to a centrifuge control circuit, and the centrifuge control circuit controls the centrifuge to stop; when the induction module 51 detects that the magnetic field is not changed, it indicates that the centrifuge rotor 3 is continuously in a balanced state, and the centrifuge rotor 3 keeps rotating, so that the centrifuge is prevented from running under the condition that the centrifuge rotor 3 is unbalanced, the service life of the centrifuge is prolonged, and the personal safety of operators is ensured.

Referring to fig. 3, a partial structure diagram of the centrifuge with the unbalance auto stop function shown in fig. 2 is shown. The sensing module 51 includes a fixing bracket 511 fixed on the bottom plate of the housing 1, a mounting drum 513 inserted on the fixing bracket 511, and a sensor 515 disposed in the mounting drum 513, wherein the sensor 515 is configured to detect a change in a magnetic field of the magnet 53. Specifically, in this embodiment, the sensor is a hall sensor, and the sensing sensitivity thereof is good. When the motor disc 31 jumps to a preset degree, the hall sensor detects the change of the magnetic field formed by the magnet 53, and the hall sensor sends a signal to the control circuit of the centrifugal machine.

Specifically, in this embodiment, the fixing bracket 511 is L-shaped, and the fixing bracket 511 is welded and fixed to the bottom of the casing 1. Of course, the fixing bracket 511 can also be fixedly connected to the casing 1 through bolts, and has simple structure and convenient processing and installation.

Wherein, the inductor 515 and the magnet 53 are arranged at the same height, so that the inductor can better detect the magnetic field around the magnet 53, and the detection accuracy is improved.

Wherein the magnet 53 is adhered to the upper surface of the motor disc 31 by glue. Specifically, in the present embodiment, the magnet 53 is a magnet. Of course, in other embodiments, the magnet 53 may be any magnetic object capable of emitting a magnetic field.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a centrifuge with unbalanced automatic shutdown function, its characterized in that, including the casing that has accommodating space and locating centrifuge rotor and induction mechanism in the casing, induction mechanism is including response module and magnet, the response module is fixed in on the casing, magnet fixed connection in on the centrifuge rotor, the response module with the magnet interval sets up and is used for detecting whether the magnetic field of magnet changes.

2. The centrifuge with the unbalanced automatic shutdown function according to claim 1, wherein the sensing module comprises a fixing bracket fixed on a bottom plate of the casing, a mounting barrel inserted on the fixing bracket, and a sensor arranged in the mounting barrel, and the sensor is used for detecting a magnetic field change of the magnet.

3. The centrifuge with the unbalanced automatic shutdown function according to claim 2, wherein the inductor is disposed at the same height as the magnet.

4. The centrifuge with unbalanced automatic shutdown function of claim 2, wherein the sensor is a hall sensor.

5. The centrifuge with unbalanced automatic shutdown function of claim 2, wherein the fixing bracket is L-shaped.

6. The centrifuge with the unbalanced automatic shutdown function according to claim 2, wherein the fixing bracket is welded and fixed to the bottom of the casing.

7. The centrifuge with unbalanced automatic shutdown function of claim 1, wherein the magnet is a magnet.

8. The centrifuge with the unbalanced automatic shutdown function of claim 1, wherein the centrifuge rotor comprises a motor disk fixed on a bottom plate of the casing and a rotating assembly provided in the motor disk, and the magnet is adhered to an upper surface of the motor disk.