CN211887451U - a centrifuge - Google Patents

Abstract

The utility model discloses a centrifuge, which belongs to the technical field of centrifuges. It includes a working device, a rotor, a cover assembly, a drive mechanism and a limit mechanism. The working device is provided with a centrifugal cavity, the rotor is rotated and arranged in the centrifugal cavity, a plurality of accommodating grooves are set on the rotor, and a hanging basket is hung in each accommodating groove to accommodate the samples to be centrifuged; the cover assembly It is arranged on the working device, covers the opening of the centrifugal cavity, and has an open state and a closed state. When the cover assembly is in the open state, a pick-and-place port is opened, and the size of the pick-and-place port is not less than the cross-sectional size of a accommodating groove; The drive mechanism can drive the cover assembly to switch between the open state and the closed state; the limit mechanism includes a gear and a limit rack, a limit slot is set on the cover assembly, and the gear can drive the limit rack to move to make the limit The rack is snapped or separated from the limit slot. The cover assembly of the centrifuge can be automatically opened and closed, the locking method is firm, and the use is convenient and safe.

Description

a centrifuge

technical field

The utility model relates to the technical field of centrifuges, in particular to a centrifuge.

Background technique

A centrifuge is a device that separates components of a mixture with different specific gravities by centrifugal force. The centrifuge includes a centrifugal chamber and a door cover that closes the opening of the centrifugal chamber. Usually, a door lock is provided to lock the door cover and the centrifugal chamber, and the door is opened and locked by manual push, which is cumbersome and inconvenient to operate. In addition, when the above centrifuge fails, the rotor may hit the door cover to unlock the door lock and cause the rotor to fly out, posing a safety hazard.

In order to avoid the above situation, in the prior art, there is a centrifuge in which the door cover is automatically opened, closed and locked. The door cover is set to a double-layer structure, the upper layer is fixed with the centrifuge body, the upper layer is provided with an opening, and the lower layer can be rotated and the upper layer can be rotated. A hole with the same shape and size as the opening is opened. When the opening is rotated until the opening coincides with the hole, the opening is in an open state. Among them, the electromagnet door lock is used to lock the lower layer at the required position. With regard to the above locking method of the door cover, when there is a circuit failure, the electromagnet will fail, and the lower layer of the door cover cannot be locked, resulting in a potential safety hazard.

Utility model content

The purpose of the utility model is to provide a centrifuge to solve the problem that the electromagnetic lock of the door cover is easy to fail when the circuit of the centrifuge is faulty, so that the locked state of the door cover is stable, thereby ensuring the safety during the operation of the equipment.

Conceived as above, the technical scheme adopted by the present utility model is:

A centrifuge, characterized in that, comprising:

The working device is provided with a centrifugal cavity;

The rotor is rotatably arranged in the centrifugal cavity, a plurality of accommodating grooves are arranged on the rotor, and a hanging basket is hung in each of the accommodating grooves, and the hanging basket is used for accommodating the centrifugal test Sample;

The cover assembly is arranged on the working device, covers the opening of the centrifugal cavity, and has an open state and a closed state. The size of the mouth is not less than the cross-sectional size of one of the accommodating grooves;

a driving mechanism capable of driving the cover assembly to switch between the open state and the closed state;

The limit mechanism includes a gear and a limit rack, the gear is fixed relative to the working device, a limit slot is set on the cover assembly, and the gear can drive the limit rack to move, so that all The limit rack is clamped or separated from the limit slot.

Optionally, the cover assembly includes a coaxially arranged fixed disk and a rotating disk, the fixed disk is fixedly connected to the working device, and the fixed disk covers the opening of the centrifugal cavity, so The rotating disk is rotatably connected to the inner side of the fixed disk, the fixed disk is provided with a first opening, the rotating disk is provided with a second opening, the first opening and the second opening The pick-and-place port is formed when overlapping.

Optionally, the driving mechanism includes a driving gear, a ring gear is provided on the circumference of the rotating disk, and the ring gear is engaged with the driving gear.

Optionally, the limit groove is defined on the edge of the gear ring, and the limit rack can be snapped into the limit groove.

Optionally, there are two limit slots, which are divided into a first limit slot and a second limit slot. When the cover assembly is in the open state, the limit rack can be snapped into the position. In the first limiting slot, when the cover assembly is in the closed state, the limiting rack can be snapped into the second limiting slot.

Optionally, the length of the ring gear is smaller than the circumference of the rotating disk, one end of the ring gear is provided with the first limiting groove, and the other end of the ring gear is provided with the first limit groove. Two limit slots.

Optionally, the driving mechanism further includes a driving motor, the driving motor is arranged on the working device, the driving gear is connected to the output end of the driving motor, and the driving motor can be driven by the driving gear The rotating disc rotates.

Optionally, the limiting mechanism further includes a motor, the motor is arranged on the working device, and the gear is connected to the output end of the motor.

Optionally, the number of the accommodating slots is set to two, and the two accommodating slots are symmetrically arranged on the rotor.

Optionally, a box body is provided on the outer side of the working device, the box body is arranged on a side close to the pick-and-place port, and the drive mechanism and the limit mechanism are both arranged on the box body.

The beneficial effects of the present utility model:

The utility model provides a centrifuge. The cover assembly covers the opening of the centrifugal cavity and has an open state and a closed state, and a driving mechanism can drive the cover assembly to switch between the open state and the closed state to realize automatic opening or closing. Pick and place mouth. The cover assembly is provided with a limit slot, the limit mechanism includes a gear and a limit rack, and the gear can drive the limit rack to move, so that the limit rack is clamped or separated from the limit slot. When the cover body assembly is in the closed state or the open state, the limit rack is clamped in the limit groove to lock the cover body assembly, ensure the locking of the state, and make the use of the equipment more safe and reliable.

Description of drawings

1 is a schematic structural diagram of a centrifuge provided by an embodiment of the present invention;

Fig. 2 is the top view of the centrifuge provided by the embodiment of the present invention;

3 is a side view of a centrifuge provided by an embodiment of the present invention;

Fig. 4 is a sectional view at A-A in Fig. 3;

FIG. 5 is a schematic structural diagram of a partial structure of the centrifuge provided in this embodiment.

In the picture:

1. Working device; 2. Rotor; 3. Cover assembly; 4. Box; 5. Hanging basket;

30, pick and place port; 31, fixed disc; 32, rotating disc; 33, ring gear; 34, shaft; 41, drive gear; 51, gear; 52, limit rack;

331, the first limit slot; 332, the second limit slot.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention.

In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or a fixed connection. It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal connection between two elements or an interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the present invention, unless otherwise expressly specified and limited, the first feature "on" or "under" the second feature may include the first and second features in direct contact, or may include the first and second features The features are not in direct contact but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes that the first feature is directly above and diagonally above the second feature, or simply means that the first feature is level higher than the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

The technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific embodiments.

This embodiment provides a centrifuge, as shown in FIG. 1 to FIG. 5 , which includes a working device 1 , a rotor 2 , a cover assembly 3 , a driving mechanism and a limiting mechanism. The working device 1 is provided with a centrifugal cavity, the rotor 2 is rotated and arranged in the centrifugal cavity, a plurality of accommodating grooves are set on the rotor 2, and a hanging basket 5 is hung in each accommodating groove. Place the sample to be centrifuged; the cover assembly 3 is arranged on the operation device 1, covers the opening of the centrifugal cavity, and has an open state and a closed state. In the open state, the cover assembly 3 opens with a pick-and-place port 30. The size of 30 is not less than the cross-sectional size of an accommodating groove; the drive mechanism can drive the cover assembly 3 to switch between the open state and the closed state; the limit mechanism includes a gear 51 and a limit rack 52, and the gear 51 is relatively The working device 1 is fixedly arranged, the cover assembly 3 is provided with a limit slot, and the gear 51 can drive the limit rack 52 to move, so that the limit rack 52 is clamped or separated from the limit slot. By setting the driving mechanism, the cover assembly 3 can be automatically opened or closed. The limiting rack 52 is clamped in the limiting groove to realize the locking of the cover plate assembly 3 . In the centrifuge provided in this embodiment, the cover assembly 3 can be automatically opened and closed, the locking method is firm, and the use is convenient and safe.

Further, the cover assembly 3 includes a coaxially arranged fixed disk 31 and a rotating disk 32, the fixed disk 31 is fixedly connected with the working device 1, the fixed disk 31 covers the opening of the centrifugal cavity, and the rotating disk 32 is rotatably connected. Inside the fixed disk 31 , the fixed disk 31 is provided with a first opening, and the rotating disk 32 is provided with a second opening. When the first opening and the second opening overlap, a pick-and-place opening 30 is formed. The rotating disk 32 rotates relative to the fixed disk 31 , and correspondingly, the second opening rotates relative to the first opening, so that the first opening and the second opening can be overlapped or separated to realize opening or closing of the pick-and-place port 30 . In this embodiment, a rotating shaft 34 and a bearing seat supporting the rotating shaft 34 are arranged at the center of the fixed disk 31 , and the rotating disk 32 is rotatably connected to the fixed disk 31 through the rotating shaft 34 .

As shown in FIG. 5 , the driving mechanism includes a driving gear 41 , and a ring gear 33 is arranged on the circumference of the rotating disk 32 .

Further, the edge of the ring gear 33 is provided with a limit groove, and the limit rack 52 can be snapped into the limit groove, so that when the rotary disk 32 is rotated to the open state or the closed state of the pick-and-place port 30, the rotating circle is locked. The disk 32 is in a fixed state, so as to ensure the safety of the device.

Further, there are two limit slots, which are divided into a first limit slot 331 and a second limit slot 332 . When the cover assembly 3 is in the open state, the limit rack 52 can be inserted into the first limit slot 331 . Inside, when the cover assembly 3 is in the closed state, the limiting rack 52 can be snapped into the second limiting groove 332 . In this embodiment, the first limiting groove 331 is provided on the circumference of the rotating disk 32 close to the second opening, and the second limiting groove 332 is provided at a position close to the symmetry with the first limiting groove 331 .

Further, the annular length of the ring gear 33 is smaller than the circumference of the rotating disc 32 , one end of the ring gear 33 is provided with a first limiting groove 331 , and the other end of the ring gear 33 is provided with a second limiting groove 332 . The range of rotation is within the range of the length of the circumference where the ring gear 33 is located, so that rapid positioning and locking of the second opening can be achieved.

Further, the drive mechanism further includes a drive motor, the drive motor is disposed on the working device 1 , the drive gear 41 is connected to the output end of the drive motor, and the drive motor can drive the rotary disk 32 to rotate through the drive gear 41 . When the driving motor is running, the driving gear 41 rotates, and the driving gear 41 drives the rotating disk 32 to rotate by meshing with the ring gear 33 .

Further, the limiting mechanism further includes a motor, the motor is arranged on the working device 1 , and the gear 51 is connected to the output end of the motor. When the motor is running, it drives the gear 51 to rotate, and the gear 51 rotates to drive the limit rack 52 meshed with it to make a linear motion to escape or snap into the limit slot, so as to realize the locking of the rotating disc 32 .

In this embodiment, as shown in FIG. 4 , the number of accommodating slots is preferably two, and the two accommodating slots are symmetrically arranged on the rotor 2 . Correspondingly, the length of the ring gear 33 is preferably slightly larger than 1/2 of the circumference of the rotating disc 32 , the first limiting groove 331 is provided on the ring gear 33 near the second opening, and the second limiting groove 332 is provided on the on the ring gear 33 away from the second opening.

Optionally, a box body 4 is provided on the outer side of the working device 1 , and the box body 4 is arranged on one side of the box body 4 close to the pick-and-place port 30 . The arrangement of the box body 4 makes the positions of the various mechanisms compact and the arrangement is reasonable. In this embodiment, the gear 51 and the driving gear 41 are both installed on the upper end surface of the case 4 , and the motor and the driving motor are installed inside the case 4 .

The door opening and closing process of the centrifuge is as follows: pressing the door opening button, under the drive of the motor and the drive motor, the gear 51 rotates and drives the limit rack 52 to move in a straight line to escape from the second limit slot 332, and the drive gear 41 drives the rotating circle The disk 32 rotates until the first limit groove 331 is opposite to the limit rack 52. At this time, the first opening and the second opening are facing each other to form the pick-and-place port 30, and the limit rack 52 moves linearly to snap into the first limit. Slot 331, the rotating disc 32 is locked, and the sample to be centrifuged can be taken and placed; then press the close key, and in the same way, the limit rack 52 is separated from the first limit slot 331, and the rotating disk 32 rotates to the second limit The position slot 332 is opposite to the limit rack 52. At this time, the first opening and the second opening are symmetrically distributed, the first opening is blocked, the limit rack 52 is snapped into the second limit slot 332, and the rotating disc 32 is locked. .

The above embodiments only illustrate the basic principles and characteristics of the present utility model, the present utility model is not limited by the above-mentioned embodiments, and under the premise of not departing from the spirit and scope of the present utility model, the present utility model also has various changes and changes. Variations and modifications fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A centrifuge, comprising:

the working device (1) is provided with a centrifugal cavity;

the rotor (2) is rotatably arranged in the centrifugal cavity, a plurality of accommodating grooves are formed in the rotor (2), a hanging basket (5) is hung in each accommodating groove, and the hanging basket (5) is used for accommodating a sample to be centrifuged;

the cover body assembly (3) is arranged on the operation device (1), covers the opening of the centrifugal cavity and has an opening state and a closing state, a taking and placing opening (30) is opened in the opening state of the cover body assembly (3), and the size of the taking and placing opening (30) is not smaller than the cross section size of one accommodating groove;

a drive mechanism capable of driving the cover assembly (3) to switch between the open state and the closed state;

limiting mechanism, including gear (51) and spacing rack (52), gear (51) for operation device (1) is fixed to be set up, be provided with the spacing groove on lid subassembly (3), gear (51) can drive spacing rack (52) motion makes spacing rack (52) with spacing groove joint or separation.

2. The centrifuge according to claim 1, wherein the cover assembly (3) comprises a fixed disk (31) and a rotating disk (32) which are coaxially arranged, the fixed disk (31) is fixedly connected with the operation device (1), the fixed disk (31) covers the opening of the centrifugal chamber, the rotating disk (32) is rotatably connected to the inner side of the fixed disk (31), a first opening is formed on the fixed disk (31), a second opening is formed on the rotating disk (32), and the first opening and the second opening are overlapped to form the taking and placing opening (30).

3. The centrifuge according to claim 2, characterized in that the drive mechanism comprises a drive gear (41), a gear ring (33) being provided on the circumference of the rotating disk (32), the gear ring (33) being in mesh with the drive gear (41).

4. The centrifuge according to claim 3, characterized in that the edge of the gear ring (33) is provided with the limiting groove, and the limiting rack (52) can be clamped into the limiting groove.

5. The centrifuge according to claim 4, wherein the two limiting grooves are divided into a first limiting groove (331) and a second limiting groove (332), the limiting rack (52) can be clamped into the first limiting groove (331) when the cover assembly (3) is in the open state, and the limiting rack (52) can be clamped into the second limiting groove (332) when the cover assembly (3) is in the closed state.

6. The centrifuge according to claim 5, wherein the ring gear (33) has a length smaller than the circumference of the rotating disk (32), one end of the ring gear (33) is opened with the first stopper groove (331), and the other end of the ring gear (33) is opened with the second stopper groove (332).

7. The centrifuge according to claim 3, characterized in that the driving mechanism further comprises a driving motor disposed on the working device (1), the driving gear (41) is connected to an output end of the driving motor, and the driving motor can drive the rotating disk (32) to rotate through the driving gear (41).

8. The centrifuge according to claim 1, wherein the limiting mechanism further comprises a motor, the motor is arranged on the working device (1), and the gear (51) is connected to an output end of the motor.

9. The centrifuge according to claim 1, characterized in that the number of the receiving grooves is two, and the two receiving grooves are symmetrically arranged on the rotor (2).

10. The centrifuge according to any of the claims 1 to 9, characterized in that a box body (11) is arranged on the outer side of the working device (1), the box body (11) is arranged on one side close to the taking and placing opening (30), and the driving mechanism and the limiting mechanism are both arranged on the box body (11).

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