Magnetic stirrer

Abstract

The utility model relates to a magnetic stirrer, which belongs to the technical field of stirrers and comprises a stirrer body, a shell and a vertical plate are fixed on the upper surface of the stirrer body, a stirring cup is placed on the upper surface of the stirrer body, a clamping mechanism is arranged in the shell, a transverse plate is fixed on the upper surface of the vertical plate, and a clamping mechanism is arranged in the transverse plate. A first electric push rod is fixed to the lower surface of the transverse plate, and a mounting mechanism is arranged at the output end of the first electric push rod. According to the magnetic stirrer, the motor drives the threaded rod to rotate and drives the rod sleeve and the push block to move, the push block is far away from the two clamping blocks, the clamping blocks are reset, the clamping blocks are far away from the clamping grooves, and a bearing and a magnetic bar are convenient to disassemble; the outer surface of the box body is sleeved with a new bearing; the motor drives the threaded rod to rotate and drives the rod sleeve and the push block to move together; and the clamping blocks are clamped into the clamping grooves to fix the bearings and the magnetic bars, so that the magnetic bars with different lengths can be conveniently replaced according to the size of the stirring cup, and the use of the stirring cup is facilitated.

Description

Technical Field

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

[0002] A magnetic stirrer is a laboratory instrument used for liquid mixing. It is mainly used for stirring or simultaneously heating and stirring low-viscosity liquids or solid-liquid mixtures. Its basic principle is to use the principle of like charges repelling and opposite charges attracting in the magnetic field. The magnetic field is used to drive the magnetic stirrer placed in the container to rotate in a circle, thereby achieving the purpose of stirring the liquid. It is mostly used in the reaction of high-molecular compounds such as polypeptides.

[0003] For example, a Chinese patent (publication number: CN211706637U) discloses a magnetic stirrer, which includes a stirrer body, a stirring table is arranged on the stirrer body, a beaker is placed on the stirring table, a magnet is arranged in the beaker, and multiple groups of positioning components are arranged on the stirring table, and the multiple groups of positioning components are distributed in a circular shape on the outer side of the beaker; the positioning component includes a support tube slidably connected to the stirring table, a scale is arranged on the outer peripheral surface of the support tube, and a locking piece for locking it on the stirring table is arranged on the support tube, a spring is fixed in the support tube, one end of the spring extends out of the inner cavity of the support tube, and an abutment plate is fixed on the end of the spring extending out of the inner cavity of the support tube, and the side wall of the abutment plate facing away from the spring contacts the outer peripheral surface of the beaker. The utility model has the effect of preventing the beaker from tipping over due to vibration.

[0004] The above-mentioned magnetic stirrer still has certain shortcomings. The rotation of the magnet connected to the stabilizing rod increases the stability of the magnet. However, for stirring different liquids, beakers of different sizes are required, while the size of the magnet remains unchanged and it is inconvenient to disassemble and replace it, which affects the stirring effect of the liquid. Therefore, the present application proposes a magnetic stirrer to solve the above-mentioned problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a magnetic stirrer with the advantages of easy replacement, etc., solving the problem of inconvenient replacement of the prior art magnetic stirrer.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a magnetic stirrer, comprising a stirrer body, a shell and a vertical plate are fixed on the upper surface of the stirrer body, a stirring cup is placed on the upper surface of the stirrer body, a clamping mechanism is provided inside the shell, a horizontal plate is fixed on the upper surface of the vertical plate, a first electric push rod is fixed on the lower surface of the horizontal plate, a mounting mechanism is provided at the output end of the first electric push rod, a bearing is provided on the outer surface of the mounting mechanism, and a plurality of magnetic bars are fixed on the outer surface of the bearing;

[0007] The mounting mechanism includes a box body fixed to the output end of the first electric push rod, a motor is fixed to the upper surface of the inner cavity of the box body, a threaded rod is fixed to the output shaft of the motor, the outer surface of the threaded rod is threadedly connected to a rod sleeve, a push block is fixed to the lower surface of the rod sleeve, the left and right sides of the push block are abutted with a clamping block, a sliding block is fixed to the lower surface of the clamping block, a fixing rod is fixed between the left and right sides of the inner cavity of the box body, a spring is sleeved on the outer surface of the fixing rod, and the mounting mechanism also includes two clamping grooves opened in the inner cavity wall of the bearing.

[0008] Furthermore, limit blocks are fixed on both sides of the rod sleeve, two limit rods are fixed on the upper surface of the inner cavity of the box body, the limit blocks are slidably connected to the outer surfaces of the limit rods, the box body is a cylinder, and the bearing is slidably connected to the outer surface of the box body.

[0009] Furthermore, the pushing block and the clamping block are both trapezoidal in shape, the clamping block is slidably connected to the inside of the clamping slot, and the sliding block is slidably connected to the outer surface of the fixing rod.

[0010] Furthermore, the opposite sides of the two springs are respectively fixed to the opposite sides of the two sliders, and the opposite sides of the two springs are respectively fixed to the left and right sides of the inner cavity of the box.

[0011] Furthermore, the clamping mechanism includes a second electric push rod fixed to the right side of the shell cavity, and a first rack is fixed to the output end of the second electric push rod. The clamping mechanism also includes a rotating rod rotatably connected between the upper and lower sides of the shell cavity, and a gear meshing with the first rack is fixed to the outer surface of the rotating rod, and a second rack is meshed on the outer surface of the gear. Connecting rods are fixed to the front sides of the first rack and the second rack, and clamps are fixed to the opposite sides of the two connecting rods.

[0012] Furthermore, T-shaped blocks are fixed on the front side of the first rack and the back side of the second rack, T-shaped slots are opened on the front and rear sides of the inner cavity of the shell, and the T-shaped blocks are slidably connected to the inside of the T-shaped slots.

[0013] Furthermore, sliding holes are provided on both the left and right sides of the shell, the first rack is slidably connected to the inside of the left end sliding hole, and the second rack is slidably connected to the inside of the right end sliding hole.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The magnetic stirrer, through the installation mechanism, the motor drives the threaded rod to rotate, drives the rod sleeve and the push block to move, the push block is away from the two blocks, the block is reset, so that the block is away from the slot, which is convenient for disassembling the bearing and the magnetic rod, and the new bearing is sleeved on the outer surface of the box body. The motor drives the threaded rod to rotate, drives the rod sleeve and the push block to move together, and the push block pushes the block to move, so that the block is stuck in the inside of the slot, fixes the bearing and the magnetic rod, and is convenient for replacing magnetic rods of different lengths according to the size of the stirring cup, which is beneficial to the stirring of the stirring cup and improves the stirring effect.

[0016] 2. The magnetic stirrer places the stirring cup on the stirrer body through the clamping mechanism. The second electric push rod drives the first rack to move, drives the gear and the rotating rod to rotate together, and makes the second rack move in the opposite direction. The first rack and the second rack move in the opposite direction at the same time, so that the two connecting rods move relatively at the same time and drive the clamping plate to move. The stirring cup is fixed by the clamping plate to prevent the stirring cup from shifting during use and affecting the work of the magnetic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a three-dimensional appearance diagram of the installation mechanism, bearing and magnetic rod of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the installation mechanism of the utility model;

[0020] Figure 4 It is a schematic diagram of the top view of the clamping mechanism of the utility model.

[0021] In the figure: 1 agitator body, 2 a shell, 3 a clamping mechanism, 301 a second electric push rod, 302 a first rack, 303 a rotating rod, 304 a gear, 305 a second rack, 306 a connecting rod, 307 a clamping plate, 4 a mounting mechanism, 401 a box, 402 a motor, 403 a threaded rod, 404 a rod sleeve, 405 a push block, 406 a clamping block, 407 a fixing rod, 408 a slider, 409 a spring, 410 a clamping slot, 5 a bearing, 6 a magnetic rod, 7 a stirring cup, 8 a vertical plate, 9 a horizontal plate, 10 a first electric push rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-2 A magnetic stirrer in this embodiment includes a stirrer body 1, a shell 2 and a vertical plate 8 are fixed on the upper surface of the stirrer body 1, the vertical plate 8 is located behind the shell 2, a stirring cup 7 is placed on the upper surface of the stirrer body 1, which is convenient for stirring the liquid, and a clamping mechanism 3 is provided inside the shell 2 for clamping and fixing the stirring cup 7 to prevent the stirring cup 7 from moving during use, thereby affecting the stirring, a horizontal plate 9 is fixed on the upper surface of the vertical plate 8, a first electric push rod 10 is fixed on the lower surface of the horizontal plate 9, an installation mechanism 4 is provided at the output end of the first electric push rod 10, a bearing 5 is provided on the outer surface of the installation mechanism 4, and a plurality of magnetic bars 6 are fixed on the outer surface of the bearing 5.

[0024] It can be understood that the first electric push rod 10 drives the mounting mechanism 4, the bearing 5 and the magnetic rod 6 to move together, so that the magnetic rod 6 moves to the inside of the stirring cup 7 or moves to the outside of the stirring cup 7. By starting the stirrer body 1, the stirrer body 1 drives the magnetic rod 6 to rotate through magnetism to stir the liquid inside the stirring cup 7.

[0025] It should be noted that the stirrer body 1 is a magnetic stirrer in the prior art, and its working principle will not be described in detail herein.

[0026] See also Figure 3 In order to facilitate the replacement of magnetic bars 6 of different lengths, the installation mechanism 4 in this embodiment includes a box body 401 fixed to the output end of the first electric push rod 10, a motor 402 is fixed to the upper surface of the inner cavity of the box body 401, and a threaded rod 403 is fixed to the output shaft of the motor 402. The outer surface of the threaded rod 403 is threadedly connected with a rod sleeve 404, and a push block 405 is fixed to the lower surface of the rod sleeve 404. The motor 402 drives the threaded rod 403 to rotate, driving the rod sleeve 404 and the push block 405 to move together. The left and right sides of the push block 405 are both abutted with a card block 406, and a slider 408 is fixed to the lower surface of the card block 406. A fixed rod 407 is fixed between the left and right sides of the inner cavity of the box body 401, and a spring 409 is sleeved on the outer surface of the fixed rod 407 for driving the card block 406 to reset. The installation mechanism 4 also includes two card grooves 410 opened in the inner cavity wall of the bearing 5.

[0027] Among them, limit blocks are fixed on the left and right sides of the rod sleeve 404, and two limit rods are fixed on the upper surface of the inner cavity of the box body 401. The limit blocks are slidably connected to the outer surface of the limit rods to increase the stability of the rod sleeve 404 when moving. The box body 401 is a cylinder, and the bearing 5 is slidably connected to the outer surface of the box body 401, which facilitates the bearing 5 to drive the magnetic rod 6 to rotate.

[0028] In addition, the push block 405 and the clamping block 406 are both trapezoidal, and the clamping block 406 is slidably connected to the inside of the clamping slot 410, which is convenient for the installation and removal of the bearing 5 and the magnetic bar 6. The slider 408 is slidably connected to the outer surface of the fixed rod 407 to increase the stability of the clamping block 406 when moving.

[0029] In addition, the opposite sides of the two springs 409 are respectively fixed to the opposite sides of the two sliders 408, and the opposite sides of the two springs 409 are respectively fixed to the left and right sides of the inner cavity of the box body 401. When the push block 405 is away from the clamping block 406, the clamping block 406 is away from the clamping slot 410 under the action of the spring 409, which facilitates the disassembly of the bearing 5 and the magnetic rod 6.

[0030] In the installation mechanism 4 of this embodiment, the motor 402 drives the threaded rod 403 to rotate, drives the rod sleeve 404 and the push block 405 to move, and the push block 405 is away from the two blocks 406. The block 406 is reset, so that the block 406 is away from the slot 410, which is convenient for disassembling the bearing 5 and the magnetic bar 6, and the new bearing 5 is sleeved on the outer surface of the box body 401. The motor 402 drives the threaded rod 403 to rotate, drives the rod sleeve 404 and the push block 405 to move together, and the push block 405 pushes the block 406 to move, so that the block 406 is stuck in the inside of the slot 410, fixes the bearing 5 and the magnetic bar 6, and is convenient for replacing the magnetic bars 6 of different lengths according to the size of the stirring cup 7, which is beneficial to the use of the stirring cup 7.

[0031] See also Figure 4 In order to fix the mixing cup 7, the clamping mechanism 3 in this embodiment includes a second electric push rod 301 fixed to the right side of the inner cavity of the shell 2, and a first rack 302 is fixed to the output end of the second electric push rod 301. The clamping mechanism 3 also includes a rotating rod 303 rotatably connected between the upper and lower sides of the inner cavity of the shell 2, and a gear 304 meshing with the first rack 302 is fixed on the outer surface of the rotating rod 303. The outer surface of the gear 304 is meshed with a second rack 305. The second electric push rod 301 drives the first rack 302 to move, drives the gear 304 and the rotating rod 303 to rotate together, and causes the second rack 305 to move in the opposite direction. Connecting rods 306 are fixed to the front sides of the first rack 302 and the second rack 305. The connecting rods 306 are L-shaped, and clamping plates 307 are fixed to the opposite sides of the two connecting rods 306. The clamping plates 307 are arc-shaped, and the clamping plates 307 abut against the mixing cup 7 for clamping and fixing the mixing cup 7.

[0032] Among them, T-shaped blocks are fixed on the front side of the first rack 302 and the back side of the second rack 305, and T-shaped grooves are opened on the front and back sides of the inner cavity of the shell 2. The T-shaped blocks are slidably connected to the inside of the T-shaped grooves to increase the stability of the front side of the first rack 302 and the second rack 305 during rotation.

[0033] In addition, sliding holes are provided on both sides of the shell 2. The first rack 302 is slidably connected to the inside of the left end sliding hole, and the second rack 305 is slidably connected to the inside of the right end sliding hole, so as to facilitate the movement of the first rack 302 and the second rack 305.

[0034] The clamping mechanism 3 in this embodiment places the blending cup 7 on the blender body 1, and the second electric push rod 301 drives the first rack 302 to move, drives the gear 304 and the rotating rod 303 to rotate together, and makes the second rack 305 move in the opposite direction. By the first rack 302 and the second rack 305 moving in the opposite direction at the same time, the two connecting rods 306 move relatively at the same time, and drive the clamping plate 307 to move. The blending cup 7 is fixed by the clamping plate 307 to prevent the blending cup 7 from being offset during use and affecting the operation of the magnetic rod 6.

[0035] The working principle of the above embodiment is:

[0036] (1) When the bearing 5 and the magnetic rod 6 need to be replaced, the motor 402 is started, and the motor 402 drives the threaded rod 403 to rotate. When the threaded rod 403 rotates, it drives the rod sleeve 404 and the push block 405 to move together. The push block 405 will move away from the two blocks 406, releasing the limit on the block 406. The block 406 and the slider 408 will reset under the elastic action of the spring 409, so that the block 406 is away from the slot 410, which is convenient for disassembling the bearing 5 and the magnetic rod 6. The new bearing 5 is sleeved on the outer surface of the box body 401, and the motor 402 is started. The motor 402 drives the threaded rod 403 to rotate, and drives the rod sleeve 404 and the push block 405 to move together. The push block 405 pushes the block 406 to move, and the slider 408 squeezes the spring 409, so that the block 406 is stuck in the inside of the slot 410, and the bearing 5 and the magnetic rod 6 are fixed. It is convenient to replace the magnetic rod 6 of different lengths according to the size of the stirring cup 7, which is beneficial to the use of the stirring cup 7.

[0037] (2) The blending cup 7 is placed on the upper surface of the blender body 1, and the second electric push rod 301 is started. The second electric push rod 301 drives the first rack 302 to move. When the first rack 302 moves, it drives the gear 304 and the rotating rod 303 to rotate together. The gear 304 drives the second rack 305 to move in the opposite direction. The first rack 302 and the second rack 305 move in the opposite direction at the same time, driving the two connecting rods 306 to move relative to each other at the same time. The connecting rod 306 drives the clamping plate 307 to move together. The clamping plate 307 fixes the blending cup 7 to prevent the blending cup 7 from shifting during use and affecting the operation of the magnetic rod 6.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] Although the 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, comprising a stirrer body (1), characterized in that: A shell (2) and a vertical plate (8) are fixed on the upper surface of the stirrer body (1); a stirring cup (7) is placed on the upper surface of the stirrer body (1); a clamping mechanism (3) is provided inside the shell (2); a horizontal plate (9) is fixed on the upper surface of the vertical plate (8); a first electric push rod (10) is fixed on the lower surface of the horizontal plate (9); a mounting mechanism (4) is provided at the output end of the first electric push rod (10); a bearing (5) is provided on the outer surface of the mounting mechanism (4); and a plurality of magnetic bars (6) are fixed on the outer surface of the bearing (5); The mounting mechanism (4) comprises a box (401) fixed to the output end of the first electric push rod (10); a motor (402) is fixed to the upper surface of the inner cavity of the box (401); a threaded rod (403) is fixed to the output shaft of the motor (402); the outer surface of the threaded rod (403) is threadedly connected to a rod sleeve (404); a push block (405) is fixed to the lower surface of the rod sleeve (404); a clamping block (406) is abutted on the left and right sides of the push block (405); a sliding block (408) is fixed to the lower surface of the clamping block (406); a fixing rod (407) is fixed between the left and right sides of the inner cavity of the box (401); a spring (409) is sleeved on the outer surface of the fixing rod (407); and the mounting mechanism (4) further comprises two clamping grooves (410) provided in the inner cavity wall of the bearing (5).

2. A magnetic stirrer according to claim 1, characterized in that: Limit blocks are fixed on both left and right sides of the rod sleeve (404); two limit rods are fixed on the upper surface of the inner cavity of the box body (401); the limit blocks are slidably connected to the outer surfaces of the limit rods; the box body (401) is a cylinder; and the bearing (5) is slidably connected to the outer surface of the box body (401).

3. A magnetic stirrer according to claim 1, characterized in that: The push block (405) and the clamping block (406) are both trapezoidal in shape; the clamping block (406) is slidably connected to the inside of the clamping slot (410); and the sliding block (408) is slidably connected to the outer surface of the fixing rod (407).

4. A magnetic stirrer according to claim 1, characterized in that: The opposite sides of the two springs (409) are respectively fixed to the opposite sides of the two sliders (408), and the opposite sides of the two springs (409) are respectively fixed to the left and right sides of the inner cavity of the box body (401).

5. A magnetic stirrer according to claim 1, characterized in that: The clamping mechanism (3) includes a second electric push rod (301) fixed to the right side of the inner cavity of the shell (2), and a first rack (302) is fixed to the output end of the second electric push rod (301). The clamping mechanism (3) also includes a rotating rod (303) rotatably connected between the upper and lower sides of the inner cavity of the shell (2), and a gear (304) meshing with the first rack (302) is fixed to the outer surface of the rotating rod (303), and a second rack (305) is meshed on the outer surface of the gear (304). Connecting rods (306) are fixed to the front sides of the first rack (302) and the second rack (305), and clamping plates (307) are fixed to the opposite sides of the two connecting rods (306).

6. A magnetic stirrer according to claim 5, characterized in that: T-shaped blocks are fixed on the front side of the first rack (302) and the back side of the second rack (305), and T-shaped grooves are provided on the front and rear sides of the inner cavity of the shell (2), and the T-shaped blocks are slidably connected to the inside of the T-shaped grooves.

7. A magnetic stirrer according to claim 5, characterized in that: The housing (2) has sliding holes on both the left and right sides. The first rack (302) is slidably connected to the inside of the left sliding hole, and the second rack (305) is slidably connected to the inside of the right sliding hole.

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