A centrifuge

Abstract

The invention discloses a centrifuge, which belongs to the technical field of centrifuges. It includes an operating device, a rotor, a cover assembly, a driving mechanism and a limiting mechanism. The operating device is provided with a centrifugal cavity, and 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 accommodating groove to accommodate the sample to be centrifuged; the cover assembly is arranged on the operating 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 take-in and put-out opening is opened, and the size of the take-in and put-out opening is not less than the cross-sectional size of a accommodating groove; the driving mechanism can drive the cover assembly to switch between the open state and the closed state; the limiting mechanism includes a gear and a limiting rack, and a limiting groove is arranged on the cover assembly, and the gear can drive the limiting rack to move, so that the limiting rack is engaged or separated with the limiting groove. The cover assembly of the centrifuge can be opened and closed automatically, and the locking method is reliable, and it is convenient and safe to use.

Description

Technical Field

[0001] The present invention relates to the technical field of centrifuges, and in particular to a centrifuge. Background Art

[0002] A centrifuge is a device that uses centrifugal force to separate components of different specific gravities in a mixture. The centrifuge includes a centrifugal chamber and a door cover that closes the centrifugal chamber opening. A door lock is usually set to lock the door cover with the centrifugal chamber, and the door is opened and locked by manual pushing, 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.

[0003] In order to avoid the above situation, there is a centrifuge with a door cover that automatically opens, closes and locks in the prior art. The door cover is set as a double-layer structure, the upper layer is fixed to the centrifuge body, the upper layer is provided with an opening, the lower layer can rotate and has a hole that is consistent with the shape and size of the opening. When the opening and the hole are rotated to coincide, the opening is in an open state. Among them, an electromagnet door lock is used to lock the lower layer at the desired position. With respect to the locking method of the above door cover, when there is a circuit fault, the electromagnet fails and the lower layer of the door cover cannot be locked, which poses a safety hazard. Summary of the invention

[0004] The object of the present invention 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 fails, so that the locking state of the door cover is stable, thereby ensuring the safety of the equipment during operation.

[0005] As conceived above, the technical solution adopted by the present invention is:

[0006] A centrifuge, characterized in that it comprises:

[0007] The operating device is provided with a centrifugal chamber;

[0008] A rotor is rotatably disposed in the centrifugal chamber, wherein a plurality of receiving slots are disposed on the rotor, and a hanging basket is hung in each of the receiving slots, and the hanging basket is used to receive the sample to be centrifuged;

[0009] A cover assembly is arranged on the working device, covers the opening of the centrifugal chamber, and has an open state and a closed state. In the open state, the cover assembly is provided with a take-in and put-out opening, and the size of the take-in and put-out opening is not less than the cross-sectional size of one of the accommodating grooves;

[0010] A driving mechanism capable of driving the cover assembly to switch between the open state and the closed state;

[0011] The limiting mechanism includes a gear and a limiting rack. The gear is fixed relative to the operating device. A limiting groove is provided on the cover body assembly. The gear can drive the limiting rack to move, so that the limiting rack is engaged with or separated from the limiting groove.

[0012] Optionally, the cover body assembly includes a coaxially arranged fixed disc and a rotating disc, the fixed disc is fixedly connected to the operating device, the fixed disc covers the opening of the centrifugal chamber, the rotating disc is rotatably connected to the inner side of the fixed disc, the fixed disc is provided with a first opening, the rotating disc is provided with a second opening, and the first opening and the second opening are overlapped to form the taking and placing opening.

[0013] Optionally, the driving mechanism includes a driving gear, and a gear ring is provided on the circumference of the rotating disk, and the gear ring is meshed with the driving gear.

[0014] Optionally, the edge of the gear ring is provided with the limiting groove, and the limiting rack can be inserted into the limiting groove.

[0015] Optionally, the limiting groove is set to two, divided into a first limiting groove and a second limiting groove. When the cover body assembly is in the open state, the limiting rack can be inserted into the first limiting groove. When the cover body assembly is in the closed state, the limiting rack can be inserted into the second limiting groove.

[0016] Optionally, the ring length of the gear ring is smaller than the circumference of the rotating disk, the first limiting groove is formed at one end of the gear ring, and the second limiting groove is formed at the other end of the gear ring.

[0017] Optionally, the driving mechanism further includes a driving motor, which is disposed on the operating device, and the driving gear is connected to an output end of the driving motor, and the driving motor can drive the rotating disc to rotate via the driving gear.

[0018] Optionally, the limiting mechanism further includes a motor, the motor is disposed on the operating device, and the gear is connected to an output end of the motor.

[0019] Optionally, the number of the accommodating grooves is set to two, and the two accommodating grooves are symmetrically arranged on the rotor.

[0020] Optionally, a box is provided on the outside of the operating device, the box is provided on a side close to the taking and placing port, and the driving mechanism and the limiting mechanism are both provided on the box.

[0021] Beneficial effects of the present invention:

[0022] The present invention proposes a centrifuge, wherein a cover assembly covers the opening of a centrifugal chamber and has an open state and a closed state. A driving mechanism can drive the cover assembly to switch between the open state and the closed state, thereby realizing automatic opening or closing of the access opening. A limiting groove is provided on the cover assembly, and the limiting mechanism includes a gear and a limiting rack. The gear can drive the limiting rack to move, so that the limiting rack is engaged with or separated from the limiting groove. When the cover assembly is in a closed state or an open state, the limiting rack is engaged with the limiting groove to lock the cover assembly, thereby ensuring the locking state and making the use of the equipment safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a centrifuge provided by an embodiment of the present invention;

[0024] Figure 2 is a top view of a centrifuge provided by an embodiment of the present invention;

[0025] Figure 3 is a side view of a centrifuge provided by an embodiment of the present invention;

[0026] Figure 4 yes Figure 3 Sectional view at AA in the middle;

[0027] Figure 5 It is a structural schematic diagram of a part of the structure of the centrifuge provided in this embodiment.

[0028] In the figure:

[0029] 1. Operating device; 2. Rotor; 3. Cover assembly; 4. Box; 5. Hanging basket;

[0030] 30. Take-in and put-out port; 31. Fixed disc; 32. Rotating disc; 33. Ring gear; 34. Rotating shaft; 41. Driving gear; 51. Gear; 52. Limiting rack;

[0031] 331, first limiting groove; 332, second limiting groove. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0036] This embodiment provides a centrifuge, such as Figures 1 to 5 As shown, it includes an operating device 1, a rotor 2, a cover assembly 3, a driving mechanism and a limiting mechanism. The operating device 1 is provided with a centrifugal cavity, the rotor 2 is rotatably arranged in the centrifugal cavity, a plurality of accommodating grooves are arranged on the rotor 2, and a hanging basket 5 is hung in each accommodating groove, and the hanging basket 5 is used to accommodate the sample to be centrifuged; the cover assembly 3 is arranged on the operating device 1, covers the opening of the centrifugal cavity, and has an open state and a closed state. When the cover assembly 3 is in the open state, a take-in and put-out port 30 is opened, and the size of the take-in and put-out port 30 is not less than the cross-sectional size of a accommodating groove; the driving mechanism can drive the cover assembly 3 to switch between the open state and the closed state; the limiting mechanism includes a gear 51 and a limiting rack 52, the gear 51 is fixedly arranged relative to the operating device 1, and a limiting groove is arranged on the cover assembly 3, and the gear 51 can drive the limiting rack 52 to move, so that the limiting rack 52 is engaged or separated with the limiting groove. By setting the driving mechanism, the cover assembly 3 can be opened or closed automatically. The limiting rack 52 is clamped in the limiting groove to realize the locking of the cover assembly 3. In the centrifuge provided in this embodiment, the cover assembly 3 can be opened and closed automatically, the locking method is firm, and the use is convenient and safe.

[0037] Further, the cover assembly 3 includes a coaxially arranged fixed disc 31 and a rotating disc 32, the fixed disc 31 is fixedly connected to the operating device 1, the fixed disc 31 covers the opening of the centrifugal cavity, the rotating disc 32 is rotatably connected to the inner side of the fixed disc 31, a first opening is provided on the fixed disc 31, and a second opening is provided on the rotating disc 32, and a pick-up and release opening 30 is formed when the first opening and the second opening coincide with each other. The rotating disc 32 rotates relative to the fixed disc 31, and correspondingly, the second opening rotates relative to the first opening, so that the first opening and the second opening can coincide or separate, thereby realizing the opening or closing of the pick-up and release opening 30. In this embodiment, a rotating shaft 34 and a bearing seat supporting the rotating shaft 34 are provided at the center of the fixed disc 31, and the rotating disc 32 is rotatably connected to the fixed disc 31 via the rotating shaft 34.

[0038] like Figure 5 As shown, the driving mechanism includes a driving gear 41 . A gear ring 33 is provided on the circumference of the rotating disk 32 . The gear ring 33 meshes with the driving gear 41 , so that the driving gear 41 rotates to drive the rotating disk 32 to rotate.

[0039] Furthermore, a limiting groove is provided on the edge of the gear ring 33, and the limiting rack 52 can be inserted into the limiting groove, so that when the rotating disk 32 rotates to the opening 30 to be in an open state or a closed state, the rotating disk 32 is locked to fix the state, thereby ensuring the safety of the equipment.

[0040] Furthermore, two limiting grooves are provided, namely, a first limiting groove 331 and a second limiting groove 332. When the cover assembly 3 is in the open state, the limiting rack 52 can be inserted into the first limiting groove 331, and when the cover assembly 3 is in the closed state, the limiting rack 52 can be inserted 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 symmetric position of the first limiting groove 331.

[0041] Furthermore, the ring length of the gear ring 33 is smaller than the circumference of the rotating disc 32, and a first limiting groove 331 is provided at one end of the gear ring 33, and a second limiting groove 332 is provided at the other end of the gear ring 33. The rotation range is within the range of the circumference of the gear ring 33, so that the second opening can be quickly positioned and locked.

[0042] Furthermore, the driving mechanism also includes a driving motor, which is arranged on the working device 1, and the driving gear 41 is connected to the output end of the driving motor, and the driving motor can drive the rotating disc 32 to rotate through the driving gear 41. When the driving motor is running, the driving gear 41 rotates, and the driving gear 41 drives the rotating disc 32 to rotate by meshing with the ring gear 33.

[0043] Furthermore, the limiting mechanism also includes a motor, which 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, the gear 51 is driven to rotate, and the rotation of the gear 51 drives the limiting rack 52 meshed with it to make a linear motion to disengage or engage in the limiting groove, thereby realizing the locking of the rotating disc 32.

[0044] In this embodiment, if Figure 4 As shown, the number of the accommodating grooves is preferably two, and the two accommodating grooves are symmetrically arranged on the rotor 2. Correspondingly, the length of the gear ring 33 is preferably slightly larger than 1 / 2 of the circumference of the rotating disk 32, the first limiting groove 331 is provided on the gear ring 33 near the second opening, and the second limiting groove 332 is provided on the gear ring 33 away from the second opening.

[0045] Optionally, a box body 4 is provided outside the operating device 1, and the box body 4 is provided on a side close to the access opening 30, and the driving mechanism and the limiting mechanism are both provided on the box body 4. The provision of the box body 4 makes the positions of the various mechanisms compact and the arrangement reasonable. In this embodiment, the gear 51 and the driving gear 41 are both installed on the upper end surface of the box body 4, and the motor and the driving motor are installed inside the box body 4.

[0046] The door opening and closing process of the centrifuge is as follows: the door opening button is pressed, and under the drive of the motor and the driving motor, the gear 51 rotates to drive the limiting rack 52 to make a linear motion to disengage from the second limiting groove 332, and the driving gear 41 drives the rotating disc 32 to rotate to the first limiting groove 331 and opposite to the limiting rack 52. At this time, the first opening and the second opening are opposite to form a taking and placing opening 30, and the limiting rack 52 makes a linear motion to be inserted into the first limiting groove 331, and the rotating disc 32 is locked, and the sample to be centrifuged can be taken and placed; then the door closing button is pressed, and similarly, the limiting rack 52 disengages from the first limiting groove 331, and the rotating disc 32 rotates to the second limiting groove 332 and opposite to the limiting rack 52. At this time, the first opening and the second opening are symmetrically distributed, the first opening is blocked, the limiting rack 52 is inserted into the second limiting groove 332, and the rotating disc 32 is locked.

[0047] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A centrifuge, characterized in that: include: The operating device (1) is provided with a centrifugal chamber; A rotor (2) is rotatably disposed in the centrifugal chamber, wherein a plurality of receiving grooves are disposed on the rotor (2), and a hanging basket (5) is hung in each of the receiving grooves, wherein the hanging basket (5) is used to receive a sample to be centrifuged; A cover assembly (3) is arranged on the operating device (1) and covers the opening of the centrifugal chamber, and has an open state and a closed state. In the open state, the cover assembly (3) is provided with an access opening (30), and the size of the access opening (30) is not less than the cross-sectional size of one of the accommodating grooves; A driving mechanism capable of driving the cover assembly (3) to switch between the open state and the closed state; The limiting mechanism comprises a gear (51) and a limiting rack (52), wherein the gear (51) is fixedly arranged relative to the operating device (1), and a limiting groove is arranged on the cover body assembly (3), and the gear (51) can drive the limiting rack (52) to move, so that the limiting rack (52) is engaged with or separated from the limiting groove; The cover assembly (3) comprises a coaxially arranged fixed disc (31) and a rotating disc (32), the fixed disc (31) being fixedly connected to the operating device (1), the fixed disc (31) covering the opening of the centrifugal chamber, the rotating disc (32) being rotatably connected to the inner side of the fixed disc (31), the fixed disc (31) being provided with a first opening, the rotating disc (32) being provided with a second opening, and the first opening and the second opening being overlapped to form the access opening (30); The driving mechanism comprises a driving gear (41), a gear ring (33) is provided on the circumference of the rotating disc (32), and the gear ring (33) is meshed with the driving gear (41); The edge of the gear ring (33) is provided with the limiting groove, and the limiting rack (52) can be inserted into the limiting groove; The limiting grooves are provided in two numbers, namely a first limiting groove (331) and a second limiting groove (332); when the cover assembly (3) is in the open state, the limiting rack (52) can be inserted into the first limiting groove (331); when the cover assembly (3) is in the closed state, the limiting rack (52) can be inserted into the second limiting groove (332); The ring length of the gear ring (33) is smaller than the circumference of the rotating disc (32); one end of the gear ring (33) is provided with the first limiting groove (331); and the other end of the gear ring (33) is provided with the second limiting groove (332).

2. The centrifuge according to claim 1, characterized in that The driving mechanism further comprises a driving motor, the driving motor being arranged on the working device (1), the driving gear (41) being connected to an output end of the driving motor, and the driving motor being able to drive the rotating disc (32) to rotate via the driving gear (41).

3. The centrifuge according to claim 1, characterized in that The limiting mechanism further comprises a motor, the motor is arranged on the operating device (1), and the gear (51) is connected to an output end of the motor.

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

5. The centrifuge according to any one of claims 1 to 4, characterized in that: A box body (4) is arranged outside the operating device (1), the box body (4) is arranged on a side close to the taking and placing opening (30), and the driving mechanism and the limiting mechanism are both arranged on the box body (4).

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