Constant-temperature magnetic stirrer

Abstract

The utility model belongs to the field of stirring, and particularly relates to a constant-temperature magnetic stirrer which comprises an objective table and a control platform, the objective table is hollow, a magnetic stirrer and a heating structure are placed in the objective table, and the control platform is embedded in one side of the objective table. A stirring control knob electrically connected with the magnetic stirrer and a heating control knob electrically connected with the heating structure are respectively arranged on the control platform; a cover plate is detachably placed on the objective table, a containing outer frame is placed on the cover plate, and a temperature adjusting structure is embedded in the outer side wall of the containing outer frame. When liquid in the cup needs to be cooled, the liquid inlet circulation pipeline and the liquid outlet circulation pipeline are disconnected from external heat source equipment and connected with external cold source equipment, and the temperature adjusting structure is arranged on the outer side wall of the containing outer frame; external cold source equipment sprays cold source gas or liquid into the upper circulation metal pipe, at the moment, the upper circulation metal pipe and the lower circulation metal pipe are rapidly cooled, and the cup in the containing outer frame is rapidly cooled through the first heat conduction protruding block and the second heat conduction protruding block.

Description

Technical Field

[0001] The utility model belongs to the field of stirring, and in particular relates to a constant temperature magnetic stirrer. Background Art

[0002] A magnetic stirrer is a commonly used device in laboratories, mainly used for stirring liquids or solid-liquid mixtures. The basic principle is that like charges repel each other and opposite charges attract each other in a magnetic field, that is, the magnetic field drives the magnets placed in the container to rotate, thereby achieving the purpose of evenly mixing the reactants. During use, a magnetic stirrer is often used together with a heating table to achieve the purpose of simultaneous heating and stirring.

[0003] At present, most of the magnetic stirring heating devices used on the market can heat the samples, but because the heating devices are open and have no insulation system, the liquid cannot maintain the same temperature for a long time after heating, which can easily affect the experimental results. In addition, ordinary magnetic stirring devices often use natural cooling during the cooling process, which has a low cooling rate and takes a long time to cool. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The utility model provides a constant temperature magnetic stirrer to solve the above problems. (II) Contents of the utility model

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A constant temperature magnetic stirrer, comprising a stage and a control platform, wherein the stage is hollow and has a magnetic stirrer and a heating structure placed thereon, the control platform is embedded on one side of the stage, and a stirring control knob electrically connected to the magnetic stirrer and a heating control knob electrically connected to the heating structure are respectively arranged on the control platform;

[0009] A cover plate is detachably placed on the loading platform, an outer frame for accommodating cups is placed on the cover plate, and a temperature regulating structure is embedded on the outer side wall of the outer frame.

[0010] Furthermore, the temperature control structure includes an upper circulation metal tube and a lower circulation metal tube. The upper circulation metal tube is in a circular shape and has a plurality of first heat-conducting protrusions magnetically fixedly connected to the inner wall. The first heat-conducting protrusions are sealed and embedded in a frame that contains the outer frame and are connected to the interior of the outer frame. The outer side wall of the upper circulation metal tube is connected to a liquid flow pipe, and the lower circulation metal tube is arranged at the bottom of the upper circulation metal tube.

[0011] Furthermore, the temperature control structure also includes a plurality of upper limit locking blocks for limiting, the lower surface of the upper limit locking block abuts against the upper surface of the upper circulation metal pipe, and the upper limit locking block is fixedly connected to the containing outer frame by bolts.

[0012] Furthermore, the lower circulation metal tube is connected with the upper circulation metal tube through a pipeline. The lower circulation metal tube is in a circular shape and has a plurality of second heat-conducting protrusions magnetically fixedly connected to the inner wall. The second heat-conducting protrusions are sealed and embedded in the frame body of the containing outer frame and are connected with the interior of the containing outer frame. The outer wall of the lower circulation metal tube is connected with a liquid flow pipeline, and the upper circulation metal tube and the lower circulation metal tube are located in the middle of the outer wall of the containing outer frame.

[0013] Furthermore, the temperature control structure also includes a plurality of lower limit lock blocks corresponding to the upper limit lock blocks one by one, the upper surface of the lower limit lock block abuts against the lower surface of the lower circulation metal pipe, the lower limit lock block is fixedly connected to the containing outer frame by bolts, and the upper limit lock block is fixed to the lower limit lock block below it by long head bolts.

[0014] Furthermore, a plurality of lower surfaces of the upper limit locking blocks and an upper surface of the lower limit locking blocks are provided with a clamping groove, and the same protective mesh plate is clamped in the plurality of the clamping grooves. The protective mesh plate is located between the upper circulation metal pipe and the long head bolts, and there is a gap between the upper circulation metal pipe and the lower circulation metal pipe.

[0015] Furthermore, a heat-insulating plate is detachably and slidably placed on the top of the frame that contains the outer frame, and a pinch head is fixedly connected to the upper surface of the heat-insulating plate;

[0016] A socket is provided on the insulation board, and the heating structure includes an electric heater, an adjusting sleeve and a damping telescopic rod. The electric heater is electrically connected to the heating control knob, the adjusting sleeve is fixedly connected to the upper surface of the electric heater, and the top of the adjusting sleeve passes through the cover plate and extends outside, the damping telescopic rod is slidably connected in the adjusting sleeve, the damping telescopic rod is in an inverted L shape and the free end slides through the socket, the free end of the damping telescopic rod is provided with a heating rod, the damping telescopic rod has a built-in wire, and the heating rod is electrically connected to the electric heater through the wire.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. In the utility model, when it is necessary to cool the liquid in the containing outer frame, the liquid inlet circulation pipe and the liquid outlet circulation pipe are connected to the external cold source device, and the external cold source device sprays the cold source gas or liquid into the upper circulation metal pipe through the liquid inlet circulation pipe. At this time, the upper circulation metal pipe quickly cools down and cools the cup in the containing outer frame through the first heat conductive protrusion.

[0020] 2. In the utility model, the lower circulation metal tube is connected with the upper circulation metal tube through a pipeline, and a plurality of second heat-conducting protrusions are fixedly connected to the inner wall of the lower circulation metal tube, which increases the residence time of the cold source in the metal tube and further improves the cooling rate. The upper circulation metal tube and the lower circulation metal tube are located in the middle of the outer wall of the containing outer frame, so that the liquid in the middle of the cup is quickly cooled and diffused to the surroundings, reducing the time consumed for cooling and improving the cooling efficiency.

[0021] 3. In the present invention, the electric heater is turned on and the heating temperature is set by adjusting the heating control knob. Since the cup is preheated, the heating rod can heat up faster, heat the liquid and keep it consistent with the set temperature, reducing the time required for heating. At the same time, the insulation board can further lock the temperature inside the containing frame and reduce the power consumption of the electric heater.

[0022] 4. In the present invention, the upper and lower limit locking blocks are provided to limit the upper and lower circulation metal tubes, thereby improving stability and preventing the temperature adjustment structure from loosening when the containing outer frame is moved or dropped.

[0023] 5. In the present invention, the protective mesh plate can prevent workers from directly touching the metal pipe, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall three-dimensional schematic diagram of the utility model;

[0025] Figure 2 It is an overall three-dimensional schematic diagram of the utility model from another perspective;

[0026] Figure 3 It is a cross-sectional view of the cup, the containing outer frame and the temperature regulating structure in the utility model;

[0027] Figure 4 It is an exploded schematic diagram of the insulation board, the containing outer frame, the upper circulation metal pipe, the lower circulation metal pipe and the protective mesh plate in the utility model.

[0028] Figure 5 It is a three-dimensional schematic diagram of the interior of the loading platform in the utility model.

[0029] In the figure: 1. stage; 2. operating platform; 3. magnetic stirrer; 4. stirring control knob; 5. heating control knob; 6. cover plate; 7. containing outer frame; 8. upper circulation metal pipe; 9. lower circulation metal pipe; 10. first heat-conducting protrusion; 11. liquid inlet circulation pipeline; 12. upper limit locking block; 13. second heat-conducting protrusion; 14. liquid outlet circulation pipeline; 15. lower limit locking block; 16. long head bolt; 17. clamping groove; 18. protective mesh plate; 19. pinch head; 20. socket; 21. electric heater; 22. adjusting sleeve; 23. damping telescopic rod; 24. heating rod; 25. insulation board. DETAILED DESCRIPTION

[0030] 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.

[0031] Embodiment 1

[0032] like Figure 1-Figure 5 As shown, a constant temperature magnetic stirrer includes a stage 1 and a control platform 2, such as Figure 5 As shown, the stage 1 is hollow inside and is provided with a magnetic stirrer 3 and a heating structure, the control platform 2 is embedded on one side of the stage 1, and the control platform 2 is provided with a stirring control knob 4 electrically connected to the magnetic stirrer 3 and a heating control knob 5 electrically connected to the heating structure;

[0033] like Figure 1 As shown, a cover plate 6 is detachably placed on the stage 1, and a receiving frame 7 for receiving the cup is placed on the cover plate 6. A temperature control structure is embedded on the outer wall of the receiving frame 7. The liquid in the receiving frame 7 can be stirred by a magnetic stirrer 3, and the staff controls the stirring rate by a stirring control knob 4.

[0034] Further, such as Figure 1 , Figure 3 and Figure 4As shown, the temperature control structure includes an upper circulation metal tube 8 and a lower circulation metal tube 9. The upper circulation metal tube 8 is annular and has a plurality of first heat-conducting protrusions 10 fixedly connected to the inner wall thereof by magnetic attraction. The first heat-conducting protrusions 10 are sealed and embedded in the frame of the containing outer frame 7 and are connected to the interior of the containing outer frame 7. A liquid inlet circulation pipe 11 is connected to the outer wall of the upper circulation metal tube 8. The lower circulation metal tube 9 is arranged at the bottom of the upper circulation metal tube 8. When it is necessary to cool the cup in the containing outer frame 7, the liquid inlet circulation pipe 11 and the liquid outlet circulation pipe 14 are connected to an external cold source device. The external cold source device sprays the cold source gas or liquid into the upper circulation metal tube 8 through the liquid inlet circulation pipe 11. At this time, the upper circulation metal tube 8 is rapidly cooled and the cup in the containing outer frame 7 is cooled through the first heat-conducting protrusions 10.

[0035] Further, such as Figure 3 and Figure 4 As shown, in order to improve the cooling efficiency, the lower circulation metal tube 9 is connected with the upper circulation metal tube 8 through a pipeline, thereby increasing the residence time of the cold source in the metal tube. The lower circulation metal tube 9 is annular and has a plurality of second heat-conducting protrusions 13 fixedly connected to the inner wall by magnetic attraction. The second heat-conducting protrusions 13 are sealed and embedded in the frame of the containing outer frame 7 and are connected with the interior of the containing outer frame 7, thereby increasing the residence time of the cold source in the metal tube and further improving the cooling rate. The outer wall of the lower circulation metal tube 9 is connected with a liquid outlet flow pipe 14 so that the cold source can be discharged. The upper circulation metal tube 8 and the lower circulation metal tube 9 are located in the middle of the outer wall of the containing outer frame 7, thereby allowing the liquid in the middle of the cup to be quickly cooled and diffused to the surroundings, thereby reducing the time consumed for cooling.

[0036] Further, such as Figure 4 As shown, the temperature control structure also includes a plurality of upper limit locking blocks 12 for limiting, the lower surface of the upper limit locking block 12 abuts against the upper surface of the upper circulation metal pipe 8, and the upper limit locking block 12 is fixedly connected to the containing outer frame 7 by bolts.

[0037] Further, such as Figure 4 As shown, the temperature control structure also includes a plurality of lower limit lock blocks 15 corresponding to the upper limit lock blocks 12 one by one. The upper surface of the lower limit lock block 15 abuts against the lower surface of the lower circulation metal tube 9. The upper limit lock block 12 and the lower limit lock block 15 can be set to limit the upper circulation metal tube 8 and the lower circulation metal tube 9, thereby improving stability and preventing the temperature control structure from loosening when the containing outer frame 7 is moved or dropped; the lower limit lock block 15 is fixedly connected to the containing outer frame 7 by bolts, and the upper limit lock block 12 is fixed to the lower limit lock block 15 thereunder by long head bolts 16.

[0038] When the cold source is introduced into the upper circulation metal pipe 8 and the lower circulation metal pipe 9, the upper circulation metal pipe 8 and the lower circulation metal pipe 9 will cool down rapidly. In order to prevent the metal pipes in a low-temperature state from causing harm to the staff, further, the lower surfaces of the multiple upper limit locking blocks 12 and the upper surfaces of the lower limit locking blocks 15 are provided with clamping grooves 17, and the same protective mesh plate 18 is clamped in the multiple clamping grooves 17. The protective mesh plate 18 is located between the upper circulation metal pipe 8 and the long head bolts 16, and there is a gap between the upper circulation metal pipe 8 and the lower circulation metal pipe 9, so that the heat can be dissipated faster. The set protective mesh plate 18 can prevent the staff from directly touching the metal pipe, thereby improving safety.

[0039] Embodiment 2

[0040] like Figure 1-Figure 5 As shown, this embodiment is improved on the basis of the first embodiment as follows: Further, as Figure 1 and Figure 4 As shown, a heat-insulating plate 25 is detachably and slidably placed on the top of the frame that accommodates the outer frame 7, and a pinch head 19 is fixedly connected to the upper surface of the heat-insulating plate 25, so that the staff can lift the heat-insulating plate 25;

[0041] like Figure 5 As shown, a socket 20 is provided on the insulation board 25, and the heating structure includes an electric heater 21, an adjusting sleeve 22 and a damping telescopic rod 23. The electric heater 21 is electrically connected to the heating control knob 5. The adjusting sleeve 22 is fixedly connected to the upper surface of the electric heater 21, and the top passes through the cover plate 6 and extends outside. The damping telescopic rod 23 is slidably connected in the adjusting sleeve 22. The damping telescopic rod 23 is in an inverted L shape, and the free end slides through the socket 20. A heating rod 24 is provided at the free end of the damping telescopic rod 23. The damping telescopic rod 23 has a built-in wire, and the heating rod 24 is electrically connected to the electric heater 21 through the wire.

[0042] like Figure 3 As shown, when the cup in the receiving frame 7 needs to be heated, the cup containing the liquid to be heated is placed in the receiving frame 7, and then the free end of the damping telescopic rod 23 is inserted into the socket 20, and then the heating rod 24 is inserted into the cup of the liquid to be heated;

[0043] The liquid inlet circulation pipe 11 and the liquid outlet circulation pipe 14 are connected to the external heat source device, and the external heat source device sprays the heat source gas or liquid into the upper circulation metal pipe 8. At this time, the upper circulation metal pipe 8 and the lower circulation metal pipe 9 are rapidly heated and preheat the cup in the receiving outer frame 7 through the first heat conductive protrusion 10 and the second heat conductive protrusion 13;

[0044] Turn on the electric heater 21 and set the heating temperature by adjusting the heating control knob 5. Since the cup is preheated, the heating rod 24 can heat up faster, heat the liquid and keep it consistent with the set temperature, reducing the time required for heating. At the same time, the insulation board 25 can further lock the temperature inside the containing frame 7, reducing the power consumption of the electric heater 21.

[0045] In summary, the workflow of the utility model is:

[0046] Place the cup containing the liquid to be heated into the receiving outer frame 7, then insert the free end of the damping telescopic rod 23 into the socket 20, and then insert the heating rod 24 into the cup containing the liquid to be heated;

[0047] The liquid inlet circulation pipe 11 and the liquid outlet circulation pipe 14 are connected to the external heat source device, and the external heat source device sprays the heat source gas or liquid into the upper circulation metal pipe 8. At this time, the upper circulation metal pipe 8 and the lower circulation metal pipe 9 are rapidly heated and preheat the cup in the receiving outer frame 7 through the first heat conductive protrusion 10 and the second heat conductive protrusion 13;

[0048] Turn on the electric heater 21, and set the heating temperature by adjusting the heating control knob 5, and heat the liquid through the heating rod 24 and keep it consistent with the set temperature;

[0049] When the liquid in the containing outer frame 7 needs to be cooled, the liquid inlet circulation pipe 11 and the liquid outlet circulation pipe 14 are disconnected from the external heat source device and connected to the external cold source device. The external cold source device sprays the cold source gas or liquid into the upper circulation metal tube 8. At this time, the upper circulation metal tube 8 and the lower circulation metal tube 9 are rapidly cooled and the cup in the containing outer frame 7 is quickly cooled through the first heat conductive protrusion 10 and the second heat conductive protrusion 13.

[0050] However, the working principles and wiring methods of the control platform 2, magnetic stirrer 3, stirring control knob 4, heating control knob 5 and heating structure are commonplace and are all conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0051] The above different embodiments can be combined, replaced and used in conjunction with each other.

[0052] 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.

[0053] 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 constant temperature magnetic stirrer, characterized in that: The invention comprises an object carrier (1) and a control platform (2), wherein the object carrier (1) is hollow inside and is provided with a magnetic stirrer (3) and a heating structure, and the control platform (2) is embedded in one side of the object carrier (1), and the control platform (2) is provided with a stirring control knob (4) electrically connected to the magnetic stirrer (3) and a heating control knob (5) electrically connected to the heating structure; A cover plate (6) is detachably placed on the loading platform (1), an outer frame (7) for accommodating a cup is placed on the cover plate (6), and a temperature regulating structure is embedded on the outer side wall of the outer frame (7).

2. The constant temperature magnetic stirrer according to claim 1, characterized in that: The temperature control structure comprises an upper circulation metal tube (8) and a lower circulation metal tube (9); the upper circulation metal tube (8) is annular and has a plurality of first heat-conducting protrusions (10) fixedly connected to the inner wall thereof by magnetic attraction; the first heat-conducting protrusions (10) are sealed and embedded in a frame body of a containing outer frame (7) and are connected to the interior of the containing outer frame (7); the outer wall of the upper circulation metal tube (8) is connected to a liquid inlet flow pipe (11); and the lower circulation metal tube (9) is arranged at the bottom of the upper circulation metal tube (8).

3. The constant temperature magnetic stirrer according to claim 2, characterized in that: The temperature adjustment structure further comprises a plurality of upper limit locking blocks (12) for limiting the position, wherein the lower surface of the upper limit locking block (12) abuts against the upper surface of the upper circulation metal pipe (8), and the upper limit locking block (12) is fixedly connected to the containing outer frame (7) by means of bolts.

4. The constant temperature magnetic stirrer according to claim 3, characterized in that: The lower circulation metal tube (9) is connected to the upper circulation metal tube (8) through a pipeline. The lower circulation metal tube (9) is annular and has a plurality of second heat-conducting protrusions (13) fixedly connected to the inner wall thereof by magnetic attraction. The second heat-conducting protrusions (13) are sealed and embedded in the frame of the containing outer frame (7) and are connected to the interior of the containing outer frame (7). The outer wall of the lower circulation metal tube (9) is connected to a liquid outlet flow pipeline (14). The upper circulation metal tube (8) and the lower circulation metal tube (9) are located in the middle of the outer wall of the containing outer frame (7).

5. The constant temperature magnetic stirrer according to claim 4, characterized in that: The temperature control structure further comprises a plurality of lower limit locking blocks (15) corresponding one to one with the upper limit locking blocks (12); the upper surfaces of the lower limit locking blocks (15) abut against the lower surface of the lower circulation metal pipe (9); the lower limit locking blocks (15) are fixedly connected to the containing outer frame (7) by bolts; and the upper limit locking blocks (12) are fixed to the lower limit locking blocks (15) therebelow by long head bolts (16).

6. The constant temperature magnetic stirrer according to claim 5, characterized in that: The lower surfaces of the plurality of upper limit locking blocks (12) and the upper surfaces of the lower limit locking blocks (15) are provided with clamping grooves (17), and the same protective mesh plate (18) is clamped in the plurality of clamping grooves (17). The protective mesh plate (18) is located between the upper circulation metal pipe (8) and the long head bolt (16), and there is a gap between the protective mesh plate (18) and the upper circulation metal pipe (8) and the lower circulation metal pipe (9).

7. The constant temperature magnetic stirrer according to claim 6, characterized in that: A heat-insulating plate (25) is detachably and slidably placed on the top of the frame that contains the outer frame (7), and a pinch head (19) is fixedly connected to the upper surface of the heat-insulating plate (25); The insulation plate (25) is provided with a socket (20), and the heating structure comprises an electric heater (21), an adjusting sleeve (22) and a damping telescopic rod (23); the electric heater (21) is electrically connected to the heating control knob (5); the adjusting sleeve (22) is fixedly connected to the upper surface of the electric heater (21), and the top of the adjusting sleeve (22) passes through the cover plate (6) and extends outside; the damping telescopic rod (23) is slidably connected in the adjusting sleeve (22); the damping telescopic rod (23) is in an inverted L shape and the free end thereof slides through the socket (20); a heating rod (24) is provided at the free end of the damping telescopic rod (23); a wire is built into the damping telescopic rod (23); and the heating rod (24) is electrically connected to the electric heater (21) via the wire.

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