Water bath magnetic stirrer

Abstract

The utility model relates to a water bath magnetic stirrer, which belongs to the field of water bath magnetic stirrers and comprises a case, a radiating plate is fixed on the upper surface of the case, a water bath kettle is arranged on the upper side of the radiating plate, and a fixing mechanism for fixing the water bath kettle is arranged on the lower surface of the water bath kettle. Lifting mechanisms for conveniently taking beakers are arranged at the left end and the right end of the upper surface of the heat dissipation plate; the fixing mechanism comprises a connecting seat which is in threaded connection with the lower surface of the water bath kettle, a containing groove is formed in the lower surface of the connecting seat, and a mounting plate is fixed to the middle of the upper surface of the heat dissipation plate. According to the water bath magnetic stirrer, the fixing mechanism is arranged on the lower side of the water bath kettle, when the water bath kettle is fixed, the water bath kettle and the heat dissipation plate can be fixed through cooperation of all structures of the fixing mechanism, the problem that the water bath kettle moves or falls off due to the fact that the stirring mechanism collides with the inner wall of the water bath kettle is solved, and the water bath magnetic stirrer is convenient to use by workers; and the practicability is further improved.

Description

Technical Field

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

[0002] A magnetic stirrer is a laboratory instrument used for liquid mixing. It is mainly used to stir or heat and stir low-viscosity liquids or solid-liquid mixtures at the same time. Its basic principle is to use the principle of like charges repelling and opposite charges attracting in the magnetic field, and use the magnetic field to push the magnetic stirrer placed in the container to rotate in a circle, thereby achieving the purpose of stirring the liquid.

[0003] Through searching, it is found that Chinese patent publication number: CN220328485U discloses a water bath magnetic stirrer, including a water bath pot, a slide groove is arranged at the bottom of the inner cavity of the water bath pot, two sliders are slidably installed in the slide groove, a support plate is fixedly installed on the top of the two sliders, a clamping plate is fixedly installed on the top of the two support plates, two through holes are provided on the opposite sides of the two support plates, a support column is fixedly installed in the middle of the slide groove, and a first connecting rod and a second connecting rod are sleeved on the support column; the utility model is through the support plate and The clamping plate can place the beaker on the supporting plate and fix the beaker at the same time so that the beaker can be stably placed in the water bath, which can prevent the boiling force and the buoyancy of water from causing the beaker to become unstable during heating and affecting the magnetic stirring. The two supporting plates can be elastically reset through the tension spring, so that the two clamping plates can clamp the beaker. However, the utility model directly places the water bath on the upper surface of the heat sink. During the stirring process of the user, if the force is too strong, the stirring mechanism will hit the inner wall of the water bath, causing the water bath to move or fall. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a water bath magnetic stirrer, which has the advantages of being able to fix the water bath pot, etc., and solves the problem that when the water bath pot is directly placed on the upper surface of the heat sink, if the user stirs with great force, the stirring mechanism will hit the inner wall of the water bath pot, causing the water bath pot to move or fall.

[0005] To achieve the above object, the utility model provides the following technical solution: a water bath magnetic stirrer, comprising a chassis, a heat sink is fixed on the upper surface of the chassis, a water bath is provided on the upper side of the heat sink, a fixing mechanism for fixing the water bath is provided on the lower surface of the water bath, and a lifting mechanism for facilitating the taking of a beaker is provided on both left and right ends of the upper surface of the heat sink;

[0006] The fixing mechanism includes a connecting seat threadedly connected to the lower surface of the water bath, a receiving groove is opened on the lower surface of the connecting seat, a mounting plate is fixed to the middle part of the upper surface of the heat sink, a bidirectional screw is rotatably connected between the inner top wall and the inner bottom wall of the inner cavity on the left and right ends of the mounting plate through a bearing, a driven bevel gear is fixed to the outer surface of the bidirectional screw, and the outer surface of the driven bevel gear is meshedly connected to the driving bevel gear, the upper and lower ends of the outer surface of the bidirectional screw are threadedly connected to the moving frame, and the opposite sides of the moving frame on the upper and lower sides are fixed with plug blocks.

[0007] Furthermore, the size of the inner cavity of the accommodating groove is adapted to the size of the mounting plate, grooves are provided on opposite sides of the left and right side walls of the inner cavity of the accommodating groove, and limiting grooves are provided on opposite sides of the top wall and the bottom wall of the groove.

[0008] Furthermore, the opposite sides of the movable frames at the left and right ends penetrate the mounting plate and extend to the inner cavity of the groove, and the size of the insert block is adapted to the size of the inner cavity of the limiting groove.

[0009] Furthermore, a rotating rod is fixed to the inner cavity of the active bevel gear, and the front side of the rotating rod passes through the mounting plate and extends to the front side of the mounting plate.

[0010] Furthermore, the inner walls of the left and right ends of the mounting plate on the opposite sides of the inner cavity are fixed with limit strips, and the opposite sides of the left and right movable frames are fixed with limit rods, which perform linear up and down motion in the inner cavity of the limit strips.

[0011] Furthermore, the lifting mechanism includes a protective box fixed on the left and right ends of the upper surface of the heat sink, an electric push rod is fixed to the inner bottom wall of the protective box, a circular ring is provided on the upper surface of the water bath, support plates are fixed on both sides of the circular ring, and the output shaft of the electric push rod passes through the protective box and extends to the upper side of the protective box and is fixed to the support plate.

[0012] Furthermore, a circular groove is formed on the lower surface of the circular ring, and an annular protrusion is fixed on the upper surface of the water bath pot, and the size of the annular protrusion is matched with the size of the inner cavity of the circular groove.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The water bath magnetic stirrer is provided with a fixing mechanism at the lower side of the water bath. When the water bath is fixed, the water bath and the heat sink can be fixed by the cooperation between the various structures of the fixing mechanism, thereby solving the problem that the stirring mechanism hits the inner wall of the water bath, causing the water bath to move or fall, and is convenient for the staff to use, thereby improving the practicality.

[0015] 2. The water bath magnetic stirrer adds a proper amount of water to the inner cavity of the water bath pot, then turns on the switch of the chassis to heat the water, and then fixes the beaker through the set clamp assembly. After the beaker is used, the height of the beaker can be raised through the set lifting mechanism, so that the user can take the beaker easily and avoid scalding the user's hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the fixing mechanism structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the lifting mechanism of the utility model;

[0019] Figure 4 It is a schematic diagram of the circular ring and circular ring protrusion structure of the utility model.

[0020] In the figure: 1 chassis, 2 heat sink, 3 water bath, 4 fixing mechanism, 401 connecting seat, 402 receiving groove, 403 mounting plate, 404 bidirectional screw, 405 driven bevel gear, 406 driving bevel gear, 407 moving frame, 408 plug-in block, 5 lifting mechanism, 501 protective box, 502 electric push rod, 503 ring, 504 support plate. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1 A water bath magnetic stirrer in this embodiment includes a chassis 1, a heat sink 2 is fixed on the upper surface of the chassis 1, a water bath 3 is provided on the upper side of the heat sink 2, a fixing mechanism 4 for fixing the water bath 3 is provided on the lower surface of the water bath 3, and a lifting mechanism 5 for facilitating the taking of a beaker is provided at both left and right ends of the upper surface of the heat sink 2.

[0023] See also Figure 2In order to fix the water bath 3 to the heat sink 2, the fixing mechanism 4 in this embodiment includes a connecting seat 401 threadedly connected to the lower surface of the water bath 3. The connecting seat 401 is screwed on the bottom of the water bath 3, and then the connecting seat 401 is placed on the outer surface of the mounting plate 403. The lower surface of the connecting seat 401 is provided with a receiving groove 402. The middle part of the upper surface of the heat sink 2 is fixed with a mounting plate 403. The left and right ends of the mounting plate 403 are rotatably connected between the inner top wall and the inner bottom wall of the inner cavity. A bidirectional screw 404 is rotatably connected through a bearing. A driven bevel gear 405 is fixed to the outer surface of the bidirectional screw 404. The outer surface of the driven bevel gear 405 The surface is meshedly connected with an active bevel gear 406, and the upper and lower ends of the outer surface of the bidirectional screw 404 are threadedly connected with a moving frame 407, which drives the active bevel gear 406 to rotate. The rotation of the active bevel gear 406 causes the driven bevel gear 405 to drive the bidirectional screw 404 to rotate. The rotation of the bidirectional screw 404 causes the two moving frames 407 threadedly connected at its upper and lower ends to move away from each other. Insert blocks 408 are fixed on the opposite sides of the upper and lower moving frames 407. The movement of the two moving frames 407 can drive the movement of the insert block 408, and then the insert block 408 enters the inner cavity of the limit groove to fix the connecting seat 401.

[0024] Among them, the size of the inner cavity of the accommodating groove 402 is compatible with the size of the mounting plate 403, grooves are provided on the opposite sides of the left and right side walls of the inner cavity of the accommodating groove 402, and limiting grooves are provided on the opposite sides of the top wall and the bottom wall of the groove. The opposite sides of the movable frames 407 at the left and right ends penetrate the mounting plate 403 and extend to the inner cavity of the groove, and the size of the plug block 408 is compatible with the size of the inner cavity of the limiting groove.

[0025] In this embodiment, a rotating rod is fixed to the inner cavity of the active bevel gear 406, the front side of the rotating rod passes through the mounting plate 403 and extends to the front side of the mounting plate 403, and the inner walls of the inner cavities on the left and right ends of the mounting plate 403 on the opposite sides are fixed with limiting strips, and the left and right moving frames 407 on the opposite sides are fixed with limiting rods, and the limiting rods make linear up and down motions in the inner cavity of the limiting strips, which can limit the movement of the moving frame 407 and make it make linear up and down motions.

[0026] See also Figure 3-4 In order to avoid scalding the user's hands, the lifting mechanism 5 in this embodiment includes a protection box 501 fixed to the left and right ends of the upper surface of the heat sink 2, an electric push rod 502 is fixed to the inner bottom wall of the protection box 501, a circular ring 503 is provided on the upper surface of the water bath pot 3, and support plates 504 are fixed on the left and right sides of the circular ring 503. The output shaft of the electric push rod 502 passes through the protection box 501 and extends to the upper side of the protection box 501 and is fixed to the support plate 504. The electric push rod 502 can be started, and the output shaft of the electric push rod 502 moves upward, thereby pushing the support plate 504 to move upward.

[0027] A circular groove is formed on the lower surface of the circular ring 503, and an annular protrusion is fixed on the upper surface of the water bath pot 3, the size of which matches the size of the inner cavity of the circular groove.

[0028] It should be noted that clamp assemblies are fixed on both ends of the lower surface of the ring 503. The clamp assemblies are located in the inner cavity of the water bath 3 to fix the beaker to prevent the beaker from shaking when the water is heated. The movement of the support plate 504 drives the ring 503 and the clamp assembly to move, thereby raising the height of the beaker, making it easier for the user to pick up the beaker and preventing the user's hands from being scalded.

[0029] The working principle of the above embodiment is:

[0030] (1) When fixing the water bath 3, first screw the connecting seat 401 onto the bottom of the water bath 3, then place the connecting seat 401 on the outer surface of the mounting plate 403, then rotate the rotating rod, the rotation of the rotating rod drives the active bevel gear 406 to rotate, the rotation of the active bevel gear 406 causes the driven bevel gear 405 to drive the bidirectional screw 404 to rotate, the rotation of the bidirectional screw 404 causes the two movable frames 407 threadedly connected at the upper and lower ends thereof to move in opposite directions, when the two movable frames 407 move, the limit rod fixed on the right side thereof moves in the inner cavity of the limit bar, and the movement of the movable frame 407 can be limited, so that it can move in an upward and downward linear manner, the movement of the two movable frames 407 can drive the movement of the plug block 408, and then the plug block 408 enters the inner cavity of the limit groove to fix the connecting seat 401; when the water bath 3 needs to be replaced, the rotating rod can be rotated in the opposite direction until the movable frames 407 at the upper and lower ends fit together, and then the connecting seat 401 can be pulled out.

[0031] (2) Add a proper amount of water to the inner cavity of the water bath 3, then turn on the switch of the chassis 1 to heat the water, and then fix the beaker by the provided clamp assembly. After the beaker is used, in order to facilitate the removal of the beaker, the electric push rod 502 can be started, and the output shaft of the electric push rod 502 moves upward, thereby pushing the support plate 504 to move upward. The movement of the support plate 504 drives the ring 503 and the clamp assembly to move, thereby raising the height of the beaker, making it easier for the user to take the beaker.

[0032] 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.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A water bath magnetic stirrer, comprising a housing (1), characterized in that: A heat sink (2) is fixed on the upper surface of the chassis (1); a water bath (3) is provided on the upper side of the heat sink (2); a fixing mechanism (4) for fixing the water bath (3) is provided on the lower surface of the water bath (3); and lifting mechanisms (5) for facilitating the taking of a beaker are provided at both left and right ends of the upper surface of the heat sink (2); The fixing mechanism (4) comprises a connecting seat (401) threadedly connected to the lower surface of the water bath (3), the lower surface of the connecting seat (401) is provided with a receiving groove (402), a mounting plate (403) is fixed in the middle of the upper surface of the heat sink (2), a bidirectional screw (404) is rotatably connected between the inner top wall and the inner bottom wall of the inner cavity at the left and right ends of the mounting plate (403) via a bearing, a driven bevel gear (405) is fixed to the outer surface of the bidirectional screw (404), and the outer surface of the driven bevel gear (405) is meshedly connected with a driving bevel gear (406), the upper and lower ends of the outer surface of the bidirectional screw (404) are both threadedly connected to a moving frame (407), and the opposite sides of the moving frame (407) at the upper and lower sides are both fixed with an insert block (408).

2. A water bath magnetic stirrer according to claim 1, characterized in that: The size of the inner cavity of the accommodating groove (402) is compatible with the size of the mounting plate (403), and grooves are provided on opposite sides of the left and right side walls of the inner cavity of the accommodating groove (402), and limiting grooves are provided on opposite sides of the inner top wall and the inner bottom wall of the groove.

3. A water bath magnetic stirrer according to claim 2, characterized in that: The opposite sides of the movable frames (407) at the left and right ends both penetrate the mounting plate (403) and extend to the inner cavity of the groove, and the size of the insert block (408) is adapted to the size of the inner cavity of the limiting groove.

4. A water bath magnetic stirrer according to claim 1, characterized in that: A rotating rod is fixed to the inner cavity of the active bevel gear (406), and the front side of the rotating rod passes through the mounting plate (403) and extends to the front side of the mounting plate (403).

5. A water bath magnetic stirrer according to claim 1, characterized in that: Limiting strips are fixed to the inner walls of the opposite inner cavities at the left and right ends of the mounting plate (403), and limiting rods are fixed to the opposite sides of the left and right moving frames (407), and the limiting rods perform linear up-and-down motion in the inner cavity of the limiting strips.

6. A water bath magnetic stirrer according to claim 1, characterized in that: The lifting mechanism (5) comprises a protective box (501) fixed to the left and right ends of the upper surface of the heat sink (2); an electric push rod (502) is fixed to the inner bottom wall of the protective box (501); a circular ring (503) is provided on the upper surface of the water bath (3); support plates (504) are fixed to the left and right sides of the circular ring (503); an output shaft of the electric push rod (502) passes through the protective box (501) and extends to the upper side of the protective box (501) and is fixed to the support plate (504).

7. A water bath magnetic stirrer according to claim 6, characterized in that: A circular groove is formed on the lower surface of the circular ring (503), and an annular protrusion is fixed on the upper surface of the water bath pot (3), wherein the size of the annular protrusion matches the size of the inner cavity of the circular groove.

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