Magnetic stirrer

Abstract

The utility model provides a magnetic stirrer, which relates to the stirrer field, the magnetic stirrer comprises a base, a liquid containing cup and a cup cover, the top of the base is provided with a containing groove, the liquid containing cup is placed on the containing groove, the cup cover is arranged on the liquid containing cup, the top of the inner wall of the cup cover is provided with a vertical rod, the vertical rod is in sliding fit with a ring, and the ring is provided with a through hole. Magnetic rods are symmetrically arranged on the ring left and right. A groove is formed in the base, a motor is arranged in the groove, a motor transmission shaft is vertically upwards aligned with the vertical rod, and supporting plates are connected to the motor transmission shaft in a bilateral symmetry mode. The magnetic stirrer is composed of a base, a liquid containing cup and a top cover, a vertical rod is arranged in the top cover, the vertical rod is in sliding fit with a ring, the ring is connected with a magnetic rod, a motor is arranged in the base, a motor transmission shaft is connected with a supporting plate, the supporting plate is connected with an electromagnet module, and the magnitude of current is changed through cooperation of an electric push rod and a sliding rheostat, so that the ring is controlled to move up and down. Liquid is stirred at different depths, and the overall stirring effect and efficiency are improved.

Description

Technical Field

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

[0002] When mixing liquids with liquids, a magnetic stirrer is needed. The basic principle of the magnetic stirrer is to utilize the principle of repulsion between like poles and attraction between opposite poles of a magnetic field, and use the magnetic field to drive a magnetic stir bar placed in a container to rotate in a circle, so as to achieve the purpose of stirring.

[0003] The Chinese utility model patent with the authorization announcement number CN206924702U discloses a magnetic stirrer, which includes a stirring base, two container bases fixed on the stirring base, and a magnetic stirring assembly arranged between the two container bases. A temperature control board is arranged in the container base. The magnetic stirring assembly includes a vertical rod, a horizontal rod and a magnetic stir bar. The bottom of the vertical rod is fixed on an adjusting seat, the adjusting seat is fixed on the stirring base, an adjusting block is installed on the vertical rod, the horizontal rod passes through the adjusting block, an adjusting bolt is arranged on the adjusting block, sliding blocks are respectively arranged at both ends of the horizontal rod, a magnetic stir bar is vertically installed on the adjusting block, and a contact temperature sensor is also installed on the sliding block.

[0004] The structure of the traditional stirrer is simple, the position of the stirring blade is basically fixed, and there are differences in the mixing degree of liquids at different depths, resulting in poor stirring effect of the solution and slow stirring efficiency. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a magnetic stirrer, which solves the problems put forward in the above background technique.

[0007] (2) Technical Solutions

[0008] To achieve the above purposes, the utility model is realized through the following technical solutions: A magnetic stirrer includes a base, a liquid holding cup and a cup cover. A holding groove is opened at the top of the base, the liquid holding cup is placed on the holding groove, the cup cover is placed on the liquid holding cup, a vertical rod is arranged at the top of the inner wall of the cup cover, the vertical rod is slidably matched with a ring, and magnetic bars are symmetrically arranged on the left and right of the ring.

[0009] A groove is opened in the base, a motor is arranged in the groove, the motor transmission shaft is vertically upward and aligned with the vertical rod, the motor transmission shaft is symmetrically connected with support plates on the left and right, an electromagnet module is arranged at the end of the support plate, a resistance bar is arranged at the top of the support plate, the resistance bar is slidably matched with a conductive slider, a storage battery is connected to the bottom of the support plate, the conductive slider and the resistance bar form a sliding rheostat, and the electromagnet module, the sliding rheostat and the storage battery are electrically connected.

[0010] The electromagnet module can attract the magnetic bar.

[0011] Preferably, a small electric push rod is connected to the side of the support plate. The movable end of the small electric push rod is connected to a connecting rod, and the end of the connecting rod far from the small electric push rod is connected to a conductive slider. A single-chip microcomputer is provided at the bottom of the support plate.

[0012] Preferably, a plurality of sliding grooves are formed in the vertical rod along its length direction. The plurality of sliding grooves are arranged in a ring shape. The inner side of the ring is connected with sliders corresponding to the sliding grooves. The sliders are in sliding fit with the sliding grooves. A spring is connected to the top of the inner wall of the sliding groove, and the lower end of the spring is connected to the ring.

[0013] Preferably, a convex block is connected to the top of the cup cover. A vertical plate is connected to the back of the base. A horizontal plate is slidably fitted on the vertical plate. The vertical plate and the horizontal plate are vertically staggered. A sleeve is provided at the front end of the horizontal plate, and the sleeve can sleeved the convex block.

[0014] Preferably, a stud is threaded through the rear end of the horizontal plate. The stud passes through the vertical plate, and a nut is connected to the stud through the vertical plate and the horizontal plate by threading.

[0015] (III) Beneficial Effects

[0016] The present utility model provides a magnetic stirrer, which has the following beneficial effects:

[0017] 1. The magnetic stirrer is composed of a base, a liquid holding cup, and a top cover. A vertical rod is provided in the top cover, and a ring is slidably fitted on the vertical rod. The ring is connected with a magnetic bar. A motor is provided in the base, and the transmission shaft of the motor is connected to a support plate. The support plate is connected with an electromagnet module. By cooperating with an electric push rod and a sliding rheostat to change the current magnitude, the up and down movement of the ring is controlled, so as to stir the liquid at different depths, improving the overall stirring effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0019] Figure 2 is a sectional view of the base structure of the present utility model;

[0020] Figure 3 is the present utility model Figure 2 the enlarged view of the structure at A in

[0021] Figure 4 is a sectional view of the cup cover structure of the present utility model;

[0022] Figure 5 is a schematic diagram of the ring structure of the present utility model.

[0023] In the figure: 1 base, 11 containing groove, 12 groove, 13 vertical plate, 14 horizontal plate, 15 stud, 2 liquid cup, 3 cup cover, 31 convex block, 4 motor, 5 support plate, 51 electromagnet module, 52 resistance bar, 53 conductive slider, 54 storage battery, 55 small electric push rod, 56 connecting rod, 6 vertical rod, 61 chute, 7 ring, 71 magnetic bar, 72 slider, 8 spring. Specific implementation manner

[0024] An embodiment of the present utility model provides a magnetic stirrer, as Figures 1-5 shown, including a base 1, a liquid cup 2, and a cup cover 3. A containing groove 11 is opened at the top of the base 1. The liquid cup 2 is placed on the containing groove 11. The cup cover 3 is threadedly connected to the liquid cup 2. A vertical vertical rod 6 is pivotally connected to the top inner wall of the cup cover 3. The vertical rod 6 is slidably fitted with a ring 7. The ring 7 is symmetrically arranged left and right and fixedly installed with magnetic bars 71.

[0025] A groove 12 is opened in the base 1. A motor 4 is fixedly installed in the groove 12. The transmission shaft of the motor 4 is vertically upward and aligned with the vertical rod 6. Support plates 5 are symmetrically welded to the left and right of the transmission shaft of the motor 4. An electromagnet module 51 is fixedly installed at the end of the support plate 5. A resistance bar 52 is fixedly installed at the top of the support plate 5. The resistance bar 52 is slidably fitted with a conductive slider 53. A storage battery 54 is fixedly installed at the bottom of the support plate 5. The conductive slider 53 and the resistance bar 52 form a sliding rheostat. The electromagnet module 51, the sliding rheostat, and the storage battery 54 are electrically connected.

[0026] The electromagnet module 51 can attract the magnetic bar 71.

[0027] The N pole of the electromagnet module 51 on the left support plate 5 faces upward, and the S pole of the left magnetic bar 71 faces downward. The S pole of the electromagnet module 51 on the right support plate 5 faces upward, and the N pole of the right magnetic bar 71 faces downward.

[0028] A small electric push rod 55 is fixedly installed on the side of the support plate 5. The movable end of the small electric push rod 55 is welded with a connecting rod 56. One end of the connecting rod 56 away from the small electric push rod 55 is fixedly installed together with the conductive slider 53. A single-chip microcomputer is fixedly installed at the bottom of the support plate 5.

[0029] The single-chip microcomputer, the storage battery 54, and the small electric push rod 55 are electrically connected. A wireless transmission module is electrically connected through the single-chip microcomputer. The small electric push rod 55 is controlled by the single-chip microcomputer to expand and contract.

[0030] A plurality of chutes 61 are opened along the length direction of the vertical rod 6. The plurality of chutes 61 are arranged in a ring shape. Sliders 72 corresponding to the chutes 61 are welded on the inner side of the ring 7. The sliders 72 are slidably fitted with the chutes 61. Springs 8 are welded to the top inner wall of the chutes 61. The lower ends of the springs 8 are welded to the ring 7.

[0031] Working principle: The electromagnet module 51 is energized to generate a magnetic field, the motor 4 drives the support plate 5 to rotate, and the electromagnet module 51 absorbs the magnetic rod 71. The resistance of the sliding rheostat is changed by the extension and contraction of the small electric push rod 55. When the resistance becomes smaller, the current increases, the magnetic field of the electromagnet module 51 is enhanced, the suction force is enhanced, the ring 7 is lowered, and the spring 8 is stretched. When the resistance becomes larger, the current decreases, the magnetic field of the electromagnet module 51 is weakened, the suction force is weakened, and the spring 8 contracts due to elastic potential energy, pulling the ring 7 up.

[0032] The ring 7 moves up and down during the rotation, so that the magnetic rod 71 can stir the liquid at various locations, thereby improving the stirring effect.

[0033] A convex block 31 is welded on the top of the cup cover 3, and a vertical vertical plate 13 is welded on the back of the base 1. The vertical plate 13 is slidably matched with a horizontal plate 14. The vertical plate 13 and the horizontal plate 14 are vertically staggered. A collar is provided at the front end of the horizontal plate 14, and the collar can cover the convex block 31. By fixing the horizontal plate 14 with the vertical plate 13, the horizontal plate 14 presses the cup cover 3 to prevent the liquid from splashing out of the liquid cup 2 during the stirring process.

[0034] A stud 15 is threadedly penetrated through the rear end of the horizontal plate 14 , and the stud 15 penetrates the vertical plate 13 . The stud 15 passes through the vertical plate 13 and the horizontal plate 14 and is threadedly connected with a nut.

[0035] To sum up, the magnetic stirrer is composed of a base 1, a liquid holding cup, and a top cover 3. A vertical rod 6 is provided in the top cover 3. The vertical rod 6 is slidably matched with a ring 7. The ring 7 is connected to a magnetic rod 71. A motor 4 is provided in the base 1. The transmission shaft of the motor 4 is connected to a support plate 5. The support plate 5 is connected to an electromagnet module 51. The current is changed by an electric push rod and a sliding rheostat to control the up and down movement of the ring 7, so that the liquid is stirred at different depths, thereby improving the overall stirring effect and efficiency.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic stirrer, characterized in that: It includes a base (1), a liquid cup (2), and a cup cover (3). A placing groove (11) is provided at the top of the base (1). The liquid cup (2) is placed on the placing groove (11), and the cup cover (3) is placed on the liquid cup (2). A vertical rod (6) is provided at the top of the inner wall of the cup cover (3). A ring (7) is slidably fitted with the rod (6). Magnetic rods (71) are symmetrically arranged on the left and right sides of the ring (7). A groove (12) is provided in the base (1). A motor (4) is provided in the groove (12). The transmission shaft of the motor (4) is vertically upward and aligned with the rod (6). Support plates (5) are symmetrically connected to the left and right sides of the transmission shaft of the motor (4). An electromagnet module (51) is provided at the end of the support plate (5). A resistance strip (52) is provided at the top of the support plate (5). A conductive slider (53) is slidably fitted with the resistance strip (52). A storage battery (54) is connected to the bottom of the support plate (5). The conductive slider (53) and the resistance strip (52) form a slide rheostat. The electromagnet module (51), the slide rheostat, and the storage battery (54) are electrically connected. The electromagnet module (51) can attract the magnetic rod (71).

2. The magnetic stirrer according to claim 1, characterized in that: A small electric push rod (55) is connected to the side of the support plate (5). A connecting rod (56) is connected to the movable end of the small electric push rod (55). One end of the connecting rod (56) away from the small electric push rod (55) is connected to the conductive slider (53). A single-chip microcomputer is provided at the bottom of the support plate (5).

3. A magnetic stirrer according to claim 2, characterized in that: A plurality of sliding grooves (61) are provided along the length direction of the rod (6). The plurality of sliding grooves (61) are arranged in a ring shape. Sliders (72) corresponding to the sliding grooves (61) are connected to the inner side of the ring (7). The sliders (72) are slidably fitted with the sliding grooves (61). Springs (8) are connected to the top of the inner walls of the sliding grooves (61). The lower ends of the springs (8) are connected to the ring (7).

4. A magnetic stirrer according to claim 3, characterized in that: A convex block (31) is connected to the top of the cup cover (3). A vertical plate (13) is connected to the back of the base (1). A horizontal plate (14) is slidably fitted with the vertical plate (13). The vertical plate (13) and the horizontal plate (14) are vertically and crosswise arranged. A sleeve is provided at the front end of the horizontal plate (14). The sleeve can sleeved on the convex block (31).

5. A magnetic stirrer according to claim 4, characterized in that: A stud (15) is threaded through the rear end of the horizontal plate (14). The stud (15) passes through the vertical plate (13). A nut is threaded on the stud (15) passing through the vertical plate (13) and the horizontal plate (14).

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