CN111203136A

CN111203136A - A multipurpose magnetic stirrer

Info

Publication number: CN111203136A
Application number: CN202010136076.2A
Authority: CN
Inventors: 赵正印; 李明; 闫润瑛
Original assignee: Xuchang University
Current assignee: Shanghai Huxi Industrial Co ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-05-29
Anticipated expiration: 2040-03-02
Also published as: CN111203136B

Abstract

The invention discloses a multipurpose magnetic stirrer which comprises a box body, a first rotating shaft, a fourth rotating shaft and a rotary heating assembly, wherein the first rotating shaft is vertically and rotatably arranged on a bottom plate of the box body and is driven by a motor to rotate, so that a permanent magnet rotating block arranged at the upper end part of the first rotating shaft can be driven to rotate in the circumferential direction; the rotary heating assembly comprises a mounting seat embedded in a top plate of the box body, a heater fixed on the mounting seat and a rotating seat rotatably sleeved on the outer circumference of the mounting seat, the heater is used for heating utensils placed in the rotating seat, the rotating seat is driven to rotate by a rotating shaft IV through a gear component, and the rotating seat and the utensils on the rotating seat can rotate in a direction opposite to the rotating direction of the permanent magnet rotating block; the rotating shaft IV is driven to rotate by the rotating shaft I through a ratchet group I; and when the motor stops working, the rotating shaft IV can drive the rotating shaft I to rotate by adopting the ratchet group II, so that the manual mode and the electric mode can be realized.

Description

Multipurpose magnetic stirrer

Technical Field

The invention particularly relates to the technical field of magnetic stirring, and particularly relates to a multipurpose magnetic stirrer.

Background

In some laboratories, magnetic stirrers are often required as the means for liquid mixing, which are used primarily for stirring or simultaneously heating and stirring low-viscosity liquids or solid-liquid mixtures.

The stirring principle is that magnetic stirrer inside the container is driven to rotate circularly by magnetic field to stir liquid.

According to investigation and analysis, the existing magnetic stirrer is driven by a motor, has a single mode and cannot be applied to the power failure or power-free condition, and in addition, the existing magnetic stirrer also has the problems of low stirring efficiency, difficult heat dissipation generated by the motor and incapability of working for a long time.

Therefore, there is a need for a multipurpose magnetic stirrer that solves the problems of the prior art

Disclosure of Invention

The present invention is directed to a multipurpose magnetic stirrer, which solves the above problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a multipurpose magnetic stirrer comprises a box body, a first rotating shaft, a fourth rotating shaft and a rotary heating assembly, wherein the first rotating shaft is vertically and rotatably arranged on a bottom plate of the box body and is driven by a motor to rotate, so that a permanent magnet rotating block arranged at the upper end part of the first rotating shaft can be driven to rotate in the circumferential direction;

the rotary heating assembly comprises a mounting seat embedded in a top plate of the box body, a heater fixed on the mounting seat and a rotating seat rotatably sleeved on the outer circumference of the mounting seat, the heater is used for heating utensils placed in the rotating seat, the rotating seat is driven to rotate by a rotating shaft IV through a gear component, and the rotating seat and the utensils on the rotating seat can rotate in a direction opposite to the rotating direction of the permanent magnet rotating block;

the rotating shaft IV is driven to rotate by the rotating shaft I through a ratchet group I;

and when the motor stops working, the rotating shaft IV can drive the rotating shaft I to rotate by adopting the ratchet wheel set II.

Preferably, a driving gear is fixed to an output end of the motor, and the driving gear is meshed with a first gear fixed to the first rotating shaft so as to drive the first rotating shaft to rotate.

Further, preferably, the first ratchet group comprises a first ratchet wheel, a first transmission wheel and a third ratchet wheel, the first ratchet wheel is fixed on the first rotating shaft, the first ratchet wheel is meshed with the first transmission wheel, the first transmission wheel is fixed on the second rotating shaft, the second rotating shaft is rotatably arranged in a bottom plate in the box body, the first transmission wheel is further meshed with the three phases of the ratchet wheels, the third ratchet wheel is fixed on the fourth rotating shaft, and the fourth rotating shaft is rotatably arranged between a top plate and a top plate of the box body;

and when the rotating shaft I rotates clockwise, the ratchet wheel I and the ratchet wheel III can do corresponding rotating actions along with the rotating shaft I, and when the rotating shaft I rotates anticlockwise, the ratchet wheel I and the ratchet wheel III can keep relatively static.

Further, preferably, the ratchet wheel group II comprises a ratchet wheel II, a driving wheel II and a ratchet wheel IV, the ratchet wheel II is fixed on the rotating shaft I, the ratchet wheel II is meshed with the driving wheel II, the driving wheel II is fixed on the rotating shaft III, the rotating shaft III is rotatably arranged in a top plate in the box body, the driving wheel II is further meshed with the ratchet wheel IV, and the ratchet wheel IV is fixed on the rotating shaft IV and is positioned above the ratchet wheel III;

when the rotating shaft IV rotates clockwise, the second ratchet wheel and the fourth ratchet wheel can keep relatively static, and when the rotating shaft IV rotates anticlockwise, the second ratchet wheel and the fourth ratchet wheel can correspondingly rotate;

and moreover, the specifications of each gear and the ratchet wheel in the first ratchet wheel group can form a smaller transmission ratio, so that the third rotating shaft does accelerated motion.

Further, as preferred, the gear component includes driving gear and driven gear, the driving gear is fixed in the pivot four and upwards extends and stretches out on the extension end that the box formed along its axial, the driving gear meshes with driven gear mutually, driven gear coaxial cover is established on the outer circumference of rotating the seat.

Further, preferably, a hand lever is further fixed to the extending end of the rotating shaft IV, so that when the motor is stopped, the rotating shaft IV is driven to rotate through the hand lever.

Further, preferably, the mounting seat is a revolving body with a convex cross section, the outer circumference of the convex part of the mounting seat is rotatably connected with a rotating seat through a thin-wall bearing, an outer abutting seat is sleeved on the outer circumference of the rotating seat to serve as a support, the thin-wall bearing is also arranged between the outer abutting seat and the rotating seat, the outer abutting seat is fixed on a top plate of the box body, and a placing ring is coaxially fixed at the bottom of the rotating seat and used for placing a utensil.

Furthermore, as preferred, the middle one ends of the first rotating shaft, the second rotating shaft and the third rotating shaft, which are close to the box body, are respectively arranged on corresponding stable bearing seats by adopting bearings.

Further, as preferred, still include the fan, the fan is fixed in pivot two, the fan can upwards lift its bottom air when changeing to in sending the air to the dashpot that the mount pad middle part was seted up through seting up the ventilation hole on the box roof, the circumferencial direction array intercommunication of dashpot has a plurality of L type ventilation pipes, the ventilation pipe can send the air in the dashpot to the outside of mount pad and in the inside of rotating the seat.

Further, as the preferred, still be provided with controller and power on the box, the controller is continuous with power, motor and heater electrical property respectively.

Compared with the prior art, the invention has the beneficial effects that: this device is provided with ratchet group one and the work of mutually supporting of ratchet group two, thereby can realize manual mode and electric mode work, the application scope is improved, in addition still be provided with the gear component make rotate the seat and the household utensils on it can rotate with the direction opposite with permanent magnetism turning block rotation direction, the household utensils can rotate with the direction opposite with rotor rotation direction promptly, stirring efficiency has been improved, in addition under electric mode, the fan can rotate thereupon, send the motor heat to the outside, and play the effect of auxiliary heating household utensils, thereby the operating time of this device has been prolonged, make it can deal with the long demand of length of long stirring.

Drawings

FIG. 1 is a schematic perspective view of a multipurpose magnetic stirrer;

FIG. 2 is a schematic plan view of a multipurpose magnetic stirrer;

FIG. 3 is a schematic view of a multi-purpose magnetic stirrer with the rotary heating element removed;

FIG. 4 is a schematic view of a rotary heating assembly of a multipurpose magnetic stirrer;

FIG. 5 is a schematic view of a prior art ratchet;

in the figure: 1. a box body; 2. a controller; 3. a power source; 4. rotating the heating assembly; 5, a hand rocker; 6. a motor; 7. a first rotating shaft; 8. a second rotating shaft; 9. a rotating shaft III; 10. a rotating shaft IV; 11. stabilizing the bearing seat; 12. a first gear; 13. a first ratchet wheel; 14. a second ratchet wheel; 15. a permanent magnet turning block; 16. a first transmission wheel; 17. a second driving wheel; 18. a third ratchet wheel; 19. a fourth ratchet wheel; 20. a driving gear; 21. a driven gear; 22. a mounting seat; 23. a rotating seat; 24. a resting ring; 25. a heater; 26. a vent hole; 27. a vent pipe; 28. and the outer part is abutted against the seat.

Detailed Description

Referring to fig. 1 to 5, in an embodiment of the present invention, a multipurpose magnetic stirrer includes a box body 1, a first rotating shaft 7, a fourth rotating shaft 10 and a rotary heating element 4, wherein the first rotating shaft 7 is vertically and rotatably disposed on a bottom plate of the box body 1 and is driven to rotate by a motor 6, so as to drive a permanent magnet rotating block 15 disposed at an upper end portion of the first rotating shaft 7 to circumferentially rotate;

the rotary heating component 4 comprises a mounting seat 22 embedded in a top plate of the box body 1, a heater 25 fixed on the mounting seat 22 and a rotating seat 23 rotatably sleeved on the outer circumference of the mounting seat 22, the heater 25 is used for heating a vessel placed in the rotating seat 23, the rotating seat 23 is driven to rotate by a rotating shaft four 10 through a gear component, and the rotating seat 23 and the vessel on the rotating seat can rotate in a direction opposite to the rotating direction of the permanent magnet rotating block 15;

the rotating shaft IV 10 is driven to rotate by the rotating shaft I7 through a ratchet group I;

and when the motor 6 stops working, the rotating shaft four 10 can drive the rotating shaft one 7 to rotate by adopting a ratchet group two.

In this embodiment, a driving gear is fixed at an output end of the motor 6, and the driving gear is meshed with a first gear 12 fixed on the first rotating shaft 7, so that the first rotating shaft 7 can be driven to rotate.

In this embodiment, the first ratchet group comprises a first ratchet 13, a first transmission wheel 16 and a third ratchet 18, the first ratchet 13 is fixed on the first rotating shaft 7, the first ratchet 13 is meshed with the first transmission wheel 16, the first transmission wheel 16 is fixed on the second rotating shaft 8, the second rotating shaft 8 is rotatably arranged in a bottom plate in the box body 1, the first transmission wheel 16 is further meshed with the third ratchet 18, the third ratchet 18 is fixed on the fourth rotating shaft, and the fourth rotating shaft 10 is rotatably arranged between a top plate and a top plate of the box body 1;

and when the rotating shaft I7 rotates clockwise, the ratchet I13 and the ratchet III 18 can do corresponding rotating actions, and when the rotating shaft I7 rotates anticlockwise, the ratchet I13 and the ratchet III 18 can keep relatively static.

In this embodiment, the second ratchet group includes a second ratchet 14, a second transmission wheel 17 and a fourth ratchet 19, the second ratchet 14 is fixed on the first rotating shaft 7, the second ratchet 14 is meshed with the second transmission wheel 17, the second transmission wheel 17 is fixed on a third rotating shaft 9, the third rotating shaft 9 is rotatably arranged in a top plate in the box body 1, the second transmission wheel 17 is further meshed with the fourth ratchet 19, and the fourth ratchet 19 is fixed on a fourth rotating shaft 10 and is in an upper position of the third ratchet 18;

when the rotating shaft IV 10 rotates clockwise, the second ratchet wheel 14 and the fourth ratchet wheel 19 can keep relatively static, and when the rotating shaft IV 10 rotates anticlockwise, the second ratchet wheel 14 and the fourth ratchet wheel 19 can do corresponding rotating actions along with the rotating shaft IV;

moreover, the specifications of each gear and the ratchet wheel in the first ratchet wheel group can form a smaller transmission ratio, so that the third rotating shaft 9 does accelerated motion, and the specifications of the third rotating shaft include the number of teeth, the gear ring and the like, which is not described herein again.

In addition, it should be noted that the structures of the first ratchet wheel, the second ratchet wheel, the third ratchet wheel and the fourth ratchet wheel are the prior structures shown in fig. 5, specifically, the prior structures can rotate in a single direction, so that when the first ratchet wheel group is operated, the second ratchet wheel group is in a static state, and when the second ratchet wheel group is operated, the first ratchet wheel group is in a static state.

In this embodiment, the gear member includes a driving gear 20 and a driven gear 21, the driving gear 20 is fixed on an extending end of the rotating shaft 10 extending upward along the axial direction thereof and extending out of the box body 1, the driving gear 20 is engaged with the driven gear 21, and the driven gear 21 is coaxially sleeved on the outer circumference of the rotating seat 23.

In this embodiment, the extending end of the rotating shaft four 10 is further fixed with a hand lever 5, so that when the motor is stopped, the rotating shaft four 10 is driven to rotate by the hand lever 5.

Therefore, the device has two working modes, namely a manual mode and an electric mode, in the electric mode, the motor is started to rotate to drive the first rotating shaft 7 to rotate clockwise, so that the permanent magnet rotating block 15 arranged at the upper end part of the first rotating shaft 7 can be driven to rotate circumferentially, and the first ratchet wheel 13 and the third ratchet wheel 18 can do corresponding rotating actions along with the first rotating shaft, so that the driving gear 20 on the fourth rotating shaft 10 is driven to rotate clockwise, the driving gear 20 drives the driven gear to rotate, so that a vessel placed in the rotating seat 23 rotates, in addition, a rotor needs to be placed in the vessel, so that the permanent magnet rotating block 15 drives the vessel to rotate, at the moment, the rotating direction of the permanent magnet rotating block 15 is opposite to the rotating direction of the vessel, and the; in the manual mode, the motor is turned off, the hand lever 5 is adopted to drive the rotating shaft four 10 to rotate anticlockwise, the ratchet wheel two 14 and the ratchet wheel four 19 can rotate correspondingly, so that the rotating shaft one 7 and the permanent magnet rotating block 15 at the upper end of the rotating shaft one 7 are driven to rotate in the circumferential direction, meanwhile, the rotating seat is driven to rotate correspondingly, and the effect of the electric mode can be achieved.

In a preferred embodiment, the mounting seat 22 is a revolving body with a convex cross section, the outer circumference of the convex part of the mounting seat is rotatably connected with a rotating seat 23 by a thin-wall bearing, an outer abutting seat 28 is sleeved on the outer circumference of the rotating seat 23 for supporting, a thin-wall bearing is also arranged between the outer abutting seat 28 and the rotating seat 23, the outer abutting seat 28 is fixed on the top plate of the box body 1, and a resting ring 24 is coaxially fixed at the bottom of the rotating seat 23 for placing a vessel.

In this embodiment, the ends of the first rotating shaft 7, the second rotating shaft 8 and the third rotating shaft 9, which are close to the middle of the box body 1, are respectively arranged on the corresponding stable bearing seats 11 by using bearings.

In this embodiment, still include the fan, the fan is fixed on pivot two 8, the fan can upwards lift its bottom air when changeing to in the dashpot that the middle part was seted up is sent the air to mount pad 22 through seting up the ventilation hole 26 on the roof of box 1 with the air, the circumferencial direction array intercommunication of dashpot has a plurality of L type ventilation pipes 27, ventilation pipes 27 can send the air in the dashpot to the outside of mount pad 22 and in the inside of rotating seat 23, so under the electronic mode, the fan can rotate thereupon, sends the motor heat to the outside to play the effect of auxiliary heating household utensils.

In this embodiment, the box body 1 is further provided with a controller 2 and a power supply 3, and the controller 2 is electrically connected with the power supply 3, the motor 6 and the heater 25 respectively.

This device is provided with ratchet group one and the work of mutually supporting of ratchet group two, thereby can realize manual mode and electric mode work, the application scope is improved, in addition still be provided with the gear component make rotate the seat and the household utensils on it can rotate with the direction opposite with permanent magnetism turning block rotation direction, the household utensils can rotate with the direction opposite with rotor rotation direction promptly, stirring efficiency has been improved, in addition under electric mode, the fan can rotate thereupon, send the motor heat to the outside, and play the effect of auxiliary heating household utensils, thereby the operating time of this device has been prolonged, make it can deal with the long demand of length of long stirring.

Claims

1. A multipurpose magnetic stirrer, comprising a casing (1), a rotating shaft one (7), a rotating shaft four (10) and a rotary heating assembly (4), wherein the rotating shaft one (7) rotates vertically It is arranged on the bottom plate of the box body (1) and is driven to rotate by the motor (6), so as to drive the permanent magnet rotating block (15) arranged on the upper end of the rotating shaft one (7) to perform circumferential rotation;

The rotary heating assembly (4) includes a mounting seat (22) embedded in the top plate of the box body (1), a heater (25) fixed on the mounting seat (22), and a heater (25) rotatably sleeved outside the mounting seat (22). A rotating seat (23) on the circumference, the heater (25) is used to heat the utensils placed inside the rotating seat (23), and the rotating seat (23) is driven and rotated by the rotating shaft four (10) using a gear member, And the rotating seat (23) and the utensils on it can be rotated in a direction opposite to the rotating direction of the permanent magnet rotating block (15);

The four (10) rotating shafts are driven and rotated by the first rotating shaft (7) using a ratchet group;

Moreover, when the motor (6) stops working, the fourth rotating shaft (10) can use the second ratchet group to drive the rotating shaft one (7) to rotate.

2 . The multipurpose magnetic stirrer according to claim 1 , wherein a drive gear is fixed at the output end of the motor ( 6 ), and the drive gear is connected to a gear fixed on the first rotating shaft ( 7 ). 3 . One (12) is engaged, so that the one (7) of the rotating shaft can be driven to rotate.

3. The multi-purpose magnetic stirrer according to claim 1, wherein the ratchet wheel group 1 comprises a ratchet wheel 1 (13), a transmission wheel 1 (16) and a ratchet wheel 3 (18), and the ratchet wheel 1 (13) is fixed on the rotating shaft one (7), the ratchet wheel one (13) is meshed with the transmission wheel one (16), and the transmission wheel one (16) is fixed on the rotating shaft two (8), so the The second rotating shaft (8) is rotatably arranged in the bottom plate in the box body (1), the first transmission wheel (16) is also engaged with the third ratchet (18), and the third ratchet (18) is fixed on the fourth rotating shaft, The four (10) rotating shafts are rotatably arranged between the top plate and the top plate of the box body (1);

Moreover, when the first rotating shaft (7) rotates clockwise, the first ratchet (13) and the third ratchet (18) can rotate accordingly, and when the first rotating shaft (7) rotates counterclockwise, the first ratchet (13) ) and ratchet three (18) can remain relatively stationary.

4 . The multipurpose magnetic stirrer according to claim 1 , wherein the second ratchet wheel group comprises a second ratchet wheel (14), a second driving wheel (17) and a fourth ratchet wheel (19), and the second ratchet wheel (14) is fixed on the rotating shaft one (7), the ratchet wheel two (14) is meshed with the transmission wheel two (17), and the transmission wheel two (17) is fixed on the rotating shaft three (9), so The third (9) of the rotating shaft is rotatably arranged in the top plate in the box (1), and the second (17) of the transmission wheel is also engaged with the fourth (19) of the ratchet, and the fourth (19) of the ratchet is fixed on the fourth (10) of the rotating shaft. ) and above the ratchet wheel three (18);

Moreover, when the four (10) rotating shaft rotates clockwise, the second ratchet (14) and the fourth ratchet (19) can remain relatively stationary, and when the fourth (10) rotates counterclockwise, the second (14) and the fourth ratchet (19) (19) Able to perform corresponding rotation actions accordingly;

In addition, the specification setting of each gear and ratchet in the first ratchet group can form a smaller transmission ratio, so that the three (9) rotating shafts can perform accelerated motion.

5. A multipurpose magnetic stirrer according to claim 1, wherein the gear member comprises a driving gear (20) and a driven gear (21), and the driving gear (20) is fixed on the rotating shaft four (10) extends upward along its axial direction and protrudes from the extension end formed by the casing (1), the driving gear (20) meshes with the driven gear (21), and the driven gear (21) The coaxial sleeve is arranged on the outer circumference of the rotating seat (23).

6. A multipurpose magnetic stirrer according to claim 5, characterized in that a hand rocker (5) is also fixed on the extended end of the four (10) rotating shafts, so that when the motor stops The rocker (5) drives the rotating shaft four (10) to rotate.

7. The multipurpose magnetic stirrer according to claim 1, wherein the mounting seat (22) is a revolving body with a convex cross-section, and a thin-walled bearing is used on the outer circumference of the protruding part. A rotating seat (23) is rotatably connected, the outer circumference of the rotating seat (23) is sleeved with an outer abutting seat (28) as a support, and the space between the outer abutting seat (28) and the rotating seat (23) is also A thin-walled bearing is provided, and the outer abutting seat (28) is fixed on the top plate of the box (1), and the bottom of the rotating seat (23) is coaxially fixed with a rest ring (24) for placing utensils .

8. A kind of multi-purpose magnetic stirrer according to claim 1, characterized in that, one end of rotating shaft (7), two rotating shafts (8) and three rotating shafts (9) near the middle part of the box (1) all adopt bearings They are respectively arranged on the corresponding stable bearing seats (11).

9. A multipurpose magnetic stirrer according to claim 1, characterized in that it further comprises a fan, the fan is fixed on the second rotating shaft (8), and the air at the bottom of the fan can be lifted upward when the fan rotates, And through the ventilation holes (26) opened on the top plate of the box body (1), the air is sent to the buffer groove opened in the middle of the mounting seat (22), and the circumferential direction of the buffer groove is connected with a plurality of L-shaped ventilation pipes ( 27), the ventilation pipe (27) can send the air in the buffer groove to the outside of the mounting seat (22) and inside the rotating seat (23).

10. A multipurpose magnetic stirrer according to claim 1, characterized in that, a controller (2) and a power supply (3) are also provided on the box (1), and the controller (2) They are respectively electrically connected with the power supply (3), the motor (6) and the heater (25).