Magnetic stirrer

Abstract

The utility model relates to the field of magnetic stirrers, and discloses a magnetic stirrer which comprises a base, the top of the base is fixedly connected with a flat plate, the top of the flat plate is fixedly connected with a mounting seat, the top of the mounting seat is fixedly connected with a stirring barrel, the top of the stirring barrel is open, the top of the stirring barrel is fixedly connected with an upper cover, a rotating cavity is formed in the mounting seat, and a motor is arranged in the center of the interior of the base and fixedly connected to the bottom of the flat plate. An output shaft of the motor upwards penetrates through the flat plate and is rotationally connected with the flat plate; an output shaft of the motor upwards penetrates through the flat plate and extends into the rotating cavity, the output shaft of the motor is rotationally connected with the mounting base, and a permanent magnet is fixedly connected to the top end of the output shaft of the motor, located in the rotating cavity and in sliding fit with the inner top wall of the rotating cavity.

Description

Technical Field

[0001] The utility model relates to the field of magnetic stirrers, in particular to a magnetic stirrer. Background Art

[0002] In laboratories and industries, stirrers are an indispensable device in many chemical, biological, and pharmaceutical processes, among which magnetic stirrers are often used.

[0003] However, during the stirring process of the magnetic stirrer, it is often difficult to achieve the ideal stirring effect by relying solely on the rotation of the stirring bar, resulting in low stirring efficiency. The stirring speed and stirring effect need to be further improved. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the utility model provides a magnetic stirrer.

[0005] The technical solution adopted by this utility model:

[0006] A magnetic stirrer comprises a base; the interior of the base is hollow, the top of the base is fixedly connected to a flat plate, the top of the flat plate is fixedly connected to a mounting seat, the top of the mounting seat is fixedly connected to a stirring barrel, the top of the stirring barrel is open, the top of the stirring barrel is fixedly connected to an upper cover, the interior of the mounting seat is provided with a rotating chamber, the interior center of the base is provided with a motor, the motor is fixedly connected to the bottom of the flat plate, the output shaft of the motor passes through the flat plate upward, and the output shaft of the motor is rotatably connected to the flat plate; the output shaft of the motor passes through the flat plate upward and extends into the rotating chamber, the output shaft of the motor is rotatably connected to the mounting seat, the top end of the output shaft of the motor is fixedly connected to a permanent magnet, the permanent magnet is located in the rotating chamber and slidably cooperates with the inner top wall of the rotating chamber, the inner top wall center of the upper cover is fixedly connected to the upper end of a pneumatic slip ring, and the lower end of the pneumatic slip ring is fixedly connected to the upper end of the pneumatic slip ring. The end is fixedly connected to the upper part of the stirring column, the stirring column is hollow, the top of the stirring column is connected to the output end of the pneumatic slip ring, the bottom end of the stirring column is fixedly connected to a magnetic rotor, the bottom center of the magnetic rotor is a hemispherical protrusion, the hemispherical protrusion is in the groove, the hemispherical protrusion slides with the groove, the center of the inner bottom wall of the stirring barrel is provided with a groove, the permanent magnet and the magnetic rotor are magnetically attracted to each other, a number of stirring branch pipes are evenly fixedly connected on the left and right sides of the outer wall of the stirring column, a number of evenly distributed pressure relief valves are fixedly connected on the clockwise sides of the stirring branch pipes, a feed pipe and an exhaust pipe are fixed on the top of the upper cover, and both the feed pipe and the exhaust pipe are connected to the inside of the upper cover; a discharge pipe is fixedly connected to the bottom of the stirring barrel, the discharge pipe passes through the upper part of the mounting seat and extends to the outside of the mounting seat, and a valve is provided at the outer end of the discharge pipe.

[0007] An air pump is arranged on the outside of the base, and an output end of the air pump is fixedly connected with a ventilation pipe, the other end of the ventilation pipe extends to the top of the upper cover and passes through the upper cover, and the other end of the ventilation pipe is fixedly connected with the input end of the pneumatic slip ring.

[0008] The bottom edge of the upper cover and the top edge of the mixing barrel are respectively fixedly connected to flange one and flange two, and flange one and flange two are fixed by bolts, and the bolts penetrate flange one and flange two, and the bolts are clearance-matched with flange one, and the bolts are thread-matched with flange two.

[0009] Beneficial effects of the utility model:

[0010] The utility model drives the permanent magnet to rotate by a motor, thereby driving the magnetic rotor and the stirring column to rotate, thereby realizing all-round stirring of the materials. At the same time, the air pump conveys gas into the stirring column through the pneumatic slip ring, and the gas is discharged through the stirring branch pipe and the pressure relief valve to form airflow-assisted stirring, which further improves the stirring speed and stirring effect and makes the material mixing more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a cross-sectional view of the utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the stirring column of the utility model. Figure 1 ;

[0014] Figure 4 This is a schematic diagram of the structure of the stirring column of the utility model. Figure 2 ;

[0015] Figure 5 yes Figure 2 A partial enlarged view of .

[0016] The specific reference numerals in all the drawings are: 1. base; 2. mounting base; 3. mixing barrel; 4. upper cover; 5. rotating chamber; 6. motor; 7. permanent magnet; 8. pneumatic slip ring; 9. stirring column; 10. magnetic rotor; 11. stirring branch pipe; 12. pressure relief valve; 13. feed pipe; 14. exhaust pipe; 15. discharge pipe; 16. valve; 17. air pump; 18. vent pipe; 19. bolt; 20. flange one; 21. flat plate; 22. hemispherical protrusion; 23. groove; 24. flange two. DETAILED DESCRIPTION

[0017] like Figure 1-5As shown: a magnetic stirrer, including a base 1, the interior of the base 1 is hollow, the top of the base 1 is fixedly connected to a flat plate 21, the top of the flat plate 21 is fixedly connected to a mounting seat 2, the top of the mounting seat 2 is fixedly connected to a stirring barrel 3, the top of the stirring barrel 3 is open, the top of the stirring barrel 3 is fixedly connected to an upper cover 4, the interior of the mounting seat 2 has a rotating chamber 5, the interior center of the base 1 has a motor 6, the motor 6 is fixedly connected to the bottom of the flat plate 21, the output shaft of the motor 6 passes through the flat plate 21 upward, and the output shaft of the motor 6 is rotatably connected to the flat plate 21; the output shaft of the motor 6 passes through the flat plate 21 upward and extends into the rotating chamber 5, the output shaft of the motor 6 is rotatably connected to the mounting seat 2, the top of the output shaft of the motor 6 is fixedly connected to a permanent magnet 7, the permanent magnet 7 is located in the rotating chamber 5 and slidably cooperates with the inner top wall of the rotating chamber 5, the inner top wall center of the upper cover 4 is fixedly connected to the upper end of a pneumatic slip ring 8, and the lower end of the pneumatic slip ring 8 is fixedly connected At the upper part of the stirring column 9, the stirring column 9 is hollow, the top of the stirring column 9 is connected to the output end of the pneumatic slip ring 8, the bottom end of the stirring column 9 is fixedly connected with a magnetic rotor 10, the bottom center of the magnetic rotor 10 is a hemispherical protrusion 22, the hemispherical protrusion 22 is in the groove 23, the hemispherical protrusion 22 and the groove 23 are slidably matched, the center of the inner bottom wall of the stirring barrel 3 has a groove 23, the permanent magnet 7 and the magnetic rotor 10 are magnetically attracted, the left and right sides of the outer wall of the stirring column 9 are evenly fixedly connected with a plurality of stirring branch pipes 11, the clockwise sides of the stirring branch pipes 11 are fixedly connected with a plurality of evenly distributed pressure relief valves 12, the top of the upper cover 4 is fixed with a feed pipe 13 and an exhaust pipe 14, the feed pipe 13 and the exhaust pipe 14 are both connected to the inside of the upper cover 4; the bottom of the stirring barrel 3 is fixedly connected with a discharge pipe 15, the discharge pipe 15 passes through the upper part of the mounting seat 2 and extends to the outside of the mounting seat 2, and the outer end of the discharge pipe 15 is provided with a valve 16. The cooperation between the permanent magnet 7 and the magnetic rotor 10 is prior art.

[0018] An air pump 17 is provided on the outside of the base 1 , and a vent pipe 18 is fixedly connected to the output end of the air pump 17 . The other end of the vent pipe 18 extends to the top of the upper cover 4 and penetrates the upper cover 4 . The other end of the vent pipe 18 is fixedly connected to the input end of the pneumatic slip ring 8 .

[0019] The bottom edge of the upper cover 4 and the top edge of the mixing barrel 3 are fixedly connected to flange 1 20 and flange 2 24 respectively. Flange 1 20 and flange 2 24 are fixed by bolts 19. Bolts 19 penetrate flange 1 20 and flange 2 24. Bolts 19 and flange 1 20 are clearance-matched, and bolts 19 and flange 2 24 are thread-matched.

[0020] The material to be stirred is put into the stirring barrel 3 through the feed pipe 13, the motor 6 drives the permanent magnet 7 to rotate, the permanent magnet 7 rotates to drive the magnetic rotor 10 and the stirring column to rotate, the magnetic rotor 10 rotates to drive the stirring branch pipe 11 to stir the material, the air pump 17 conveys gas to the pneumatic slip ring 8 through the vent pipe 18, the gas flows along the inside of the stirring column 9 to the stirring branch pipe 11, and the gas is discharged through the pressure relief 12. The floating of the gas in the stirring liquid can further assist in stirring evenly, further improving the stirring effect, and the gas in the stirring barrel 3 can be discharged along the exhaust pipe 14. The valve 16 is opened, and the stirred material is output and collected through the discharge pipe 15. The pneumatic slip ring 8 in the utility model is a prior art device, and its structure and the connection structure with the stirring column 9 are not described in detail. The utility model only protects the mechanical part, and the functions related to it realized by the software control part are not within the protection scope of the utility model.

Claims

1. A magnetic stirrer, comprising a base (1), characterized in that: The interior of the base (1) is hollow, the top of the base (1) is fixedly connected to a flat plate (21), the top of the flat plate (21) is fixedly connected to a mounting seat (2), the top of the mounting seat (2) is fixedly connected to a mixing barrel (3), the top of the mixing barrel (3) is open, the top of the mixing barrel (3) is fixedly connected to an upper cover (4), the interior of the mounting seat (2) is provided with a rotating chamber (5), the interior center of the base (1) is provided with a motor (6), the motor (6) is fixedly connected to the bottom of the flat plate (21), and the output shaft of the motor (6) passes through the flat plate (21) in an axial direction. The output shaft of the motor (6) is rotatably connected to the plate (21); the output shaft of the motor (6) passes through the plate (21) upward and extends into the rotating chamber (5); the output shaft of the motor (6) is rotatably connected to the mounting seat (2); a permanent magnet (7) is fixedly connected to the top of the output shaft of the motor (6); the permanent magnet (7) is located in the rotating chamber (5) and is slidably matched with the inner top wall of the rotating chamber (5); the center of the inner top wall of the upper cover (4) is fixedly connected to the upper end of the pneumatic slip ring (8); and the lower end of the pneumatic slip ring (8) is fixedly connected to the upper part of the stirring column (9). The stirring column (9) is hollow, the top of the stirring column (9) is connected to the output end of the pneumatic slip ring (8), the bottom of the stirring column (9) is fixedly connected to the magnetic rotor (10), the bottom center of the magnetic rotor (10) is a hemispherical protrusion (22), the hemispherical protrusion (22) is in the groove (23), the hemispherical protrusion (22) and the groove (23) are slidably matched, the center of the inner bottom wall of the stirring barrel (3) has a groove (23), the permanent magnet (7) and the magnetic rotor (10) are magnetically attracted to each other, and the left and right sides of the outer wall of the stirring column (9) are evenly fixed. A plurality of stirring branch pipes (11) are fixedly connected, and a plurality of evenly distributed pressure relief valves (12) are fixedly connected to the clockwise side of the stirring branch pipes (11). A feed pipe (13) and an exhaust pipe (14) are fixed on the top of the upper cover (4), and both the feed pipe (13) and the exhaust pipe (14) are connected to the interior of the upper cover (4); a discharge pipe (15) is fixedly connected to the bottom of the stirring barrel (3), and the discharge pipe (15) passes through the upper part of the mounting seat (2) and extends to the outside of the mounting seat (2), and a valve (16) is provided at the outer end of the discharge pipe (15).

2. A magnetic stirrer according to claim 1, characterized in that: An air pump (17) is provided on the outside of the base (1); an output end of the air pump (17) is fixedly connected to a vent pipe (18); the other end of the vent pipe (18) extends to the top of the upper cover (4) and penetrates the upper cover (4); the other end of the vent pipe (18) is fixedly connected to an input end of a pneumatic slip ring (8).

3. A magnetic stirrer according to claim 1, characterized in that: The bottom edge of the upper cover (4) and the top edge of the mixing barrel (3) are respectively fixedly connected to flange 1 (20) and flange 2 (24); flange 1 (20) and flange 2 (24) are fixed by bolts (19); bolts (19) penetrate flange 1 (20) and flange 2 (24); bolts (19) and flange 1 (20) are clearance-matched; bolts (19) and flange 2 (24) are thread-matched.

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