Magnetic stirrer with heating function

Abstract

The invention discloses a magnetic stirrer with a heating function, and relates to the technical field of experimental equipment, the magnetic stirrer comprises a base, a stirring cup is placed on the base, a stand column is arranged on the edge of the base, a transverse column is horizontally connected to the stand column, an adjusting block is installed on the transverse column, a lifting cylinder is arranged on the adjusting block, and the lifting cylinder is connected with a plugging lifting assembly. The sealing lifting assembly is connected with a sealing cover, the sealing cover coincides with the installation axis of the stirring cup, a stirring lifting assembly is arranged in the center of the sealing cover and connected with a stirring mechanism, and a heating wire winding and unwinding mechanism is arranged on the sealing cover. The stirring mechanism drives a first magneton and a second magneton to rotate through a first bevel gear and a second bevel gear, liquid is prevented from making contact with the bottom of a sealing cover while the stirring efficiency is improved, the sealing cover is driven by a blocking lifting assembly to block an upper end opening of a stirring cup, and the liquid is prevented from overflowing out of the stirring cup.

Description

Technical Field

[0001] The invention relates to the technical field of experimental equipment, in particular to a magnetic stirrer with a heating function. Background Art

[0002] A magnetic stirrer is a commonly used laboratory equipment, usually used to stir and mix liquids in the laboratory. The magnetic stirrer is mainly composed of a magnetic stirrer host, a magnetic stirrer and a stirring container. The working principle is to stir the liquid in the stirring container with the magnetic stirrer by magnetic force so that the liquid is evenly mixed. The advantages of a magnetic stirrer are simple, convenient and fast operation. It does not require contact with traditional mechanical stirrers, avoiding the risk of contamination and sputtering by chemical reagents. Magnetic stirrers can be widely used in laboratory work in the fields of chemistry, biology, pharmaceuticals, food, etc.

[0003] Existing magnetic stirrers need to control the stirring power to avoid stirring too quickly and causing the liquid to leak from the edge of the container. However, controlling the stirring power will result in low stirring efficiency and a long time consumption. At the same time, for some liquids with higher viscosity, the magnetic particles at the bottom of the container cannot drive the upper liquid to stir during stirring, which also results in low stirring efficiency and a long stirring time. Summary of the invention

[0004] The object of the present invention is to provide a magnetic stirrer with a heating function to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A magnetic stirrer with a heating function comprises a base, a stirring cup is placed on the base, a column is arranged at the edge of the base, a cross column is horizontally connected to the column, an adjusting block is installed on the cross column, a lifting cylinder is arranged on the adjusting block, the lifting cylinder is connected to a blocking lifting component, the blocking lifting component is connected to a cover, the installation axes of the cover and the stirring cup coincide with each other, a stirring lifting component is arranged at the center of the cover, the stirring lifting component is connected to a stirring mechanism, and a heating wire retracting and releasing mechanism is arranged on the cover.

[0007] The stirring mechanism includes a suspension column, the bottom of the suspension column is rotatably connected to a connecting rod 1, the end of the connecting rod 1 is provided with a plug-in block, a magnet 1 is cooperatively plugged on the plug-in block, a supporting ball joint is provided at the end of the plug-in block, a bevel gear 1 is fixedly provided on the connecting rod 1, a connecting rod 2 is horizontally provided at the end of the suspension column, the connecting rod 2 is rotatably connected to the suspension column, a bevel gear 2 is fixedly provided on the connecting rod 2, the bevel gear 1 and the bevel gear 2 are meshed with each other, and a magnet 2 is provided at the end of the connecting rod 2.

[0008] As a further solution of the present invention: the stirring and lifting assembly includes an outer shell frame, the outer shell frame is hollow, a driving motor is fixedly installed on the top of the outer shell frame, the driving motor is connected to a threaded rod, a matching rod is installed in the outer shell frame, the matching rod and the threaded rod are threadedly matched, and the end of the matching rod is fixedly connected to the suspension column.

[0009] As a further solution of the present invention: the blocking lifting assembly includes a fixed frame connected to the lifting cylinder, the outer shell frame and the fixed frame are fixedly connected, a driving motor 2 is fixedly installed on the side of the fixed frame, the driving motor 2 is connected to a driving bevel gear, and driven bevel gears are symmetrically arranged in the fixed frame, the driven bevel gears are respectively meshed with the driving bevel gears, a winding wheel is coaxially arranged on the driven bevel gear, a suspension wire is wound on the winding wheel, a connecting block is arranged on the end of the suspension wire, the connecting block is sleeved on the outer shell frame, and the connecting block is fixedly connected to the sealing cover.

[0010] As a further solution of the present invention: the heating wire retracting and releasing mechanism includes a supporting tube arranged on the covering cover, a retracting and releasing motor is arranged on the supporting tube, a heating wire is wound inside the supporting tube, a spiral groove is arranged inside the covering cover, the heating wire passes through the spiral groove, a hanging block is arranged at the bottom of the covering cover, the spiral groove extends into the hanging block, the heating wire passes through the spiral groove in the hanging block and enters the stirring cup, and a counterweight ball is arranged at the end of the heating wire.

[0011] As a further solution of the present invention: a cleaning mechanism is also provided on the cover, and the cleaning mechanism includes a support frame connected to the fixed frame, a cleaning cylinder is provided on the support frame, a water pump is provided in the cleaning cylinder, the water pump is connected to a foldable telescopic tube, a branch pipe is provided at the end of the foldable telescopic tube, one end of the branch pipe is connected to the side of the connecting block, water holes are evenly provided on the side of the outer shell frame, the connecting block and the branch pipe penetration part are opposite to the water holes, a vertical water inlet hole is provided inside the matching rod, and a curved drainage hole is provided at the bottom edge of the matching rod.

[0012] As a further solution of the present invention: the other end of the branch pipe points to the entrance of the spiral groove, a closed groove is provided on one side of the connection block close to the water permeable hole, and an inclined chamfer is provided on the inner circle edge of the connection block.

[0013] As a further solution of the present invention: the upper radius of the spiral groove is smaller than the lower radius of the spiral groove, and the diameter of the weighted ball is larger than the inner diameter of the spiral groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) A horizontal connecting rod 2 is synchronously arranged at the end of the suspension column. When the magnet 1 rotates, the connecting rod 1 is driven to rotate. The meshing relationship between the bevel gear 1 and the bevel gear 2 is utilized to drive the connecting rod 2 and the magnet 2 to rotate synchronously. The rotation direction of the eddy current caused by the rotation of the magnet 1 is weakened by the action of the magnet 2, thereby preventing the edge of the liquid eddy current from rising and contacting the bottom of the cover due to the excessively high rotation speed. The magnet 2 disturbs the eddy current and further improves the stirring effect.

[0016] (2) The threaded rod in the outer frame is controlled by a driving motor to engage in threaded engagement with the mating rod. The mating rod and the interior of the outer frame are non-circularly engaged. When the threaded rod rotates, the mating rod can only move up and down inside the outer frame, thereby driving the suspension column at the bottom to move up and down, and further driving the stirring mechanism to move in and out of the stirring cup.

[0017] (3) The driving motor 2 drives the active bevel gear and the driven bevel gear in the fixed frame to mesh with each other. When the driven bevel gears on both sides rotate, they drive the suspension wire on the winding wheel to be retracted and released synchronously, and the suspension wire drives the cover to be raised and lowered on the outside of the outer shell frame. It should be noted that since the driven bevel gears on both sides rotate in opposite directions, the winding direction of the suspension wire on the winding wheel also needs to be opposite, so as to achieve the synchronous lifting and lowering operation of the suspension wire on both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure in which the stirring mechanism of the present invention is located inside the stirring cup.

[0020] Figure 3 It is a schematic diagram of the installation structure of the stirring lifting assembly and the stirring mechanism in the present invention.

[0021] Figure 4 It is a schematic diagram of the cross-section structure of the stirring lifting assembly in the present invention.

[0022] Figure 5 It is a structural schematic diagram of the blocking lifting assembly in the present invention.

[0023] Figure 6 It is a schematic diagram of the installation of the suspension block in the present invention.

[0024] Figure 7 It is a schematic diagram of the installation structure of the cleaning mechanism and the heating wire retracting and releasing mechanism in the present invention.

[0025] Figure 8 It is a structural schematic diagram of the connecting block in the present invention.

[0026] In the figure: 1, base; 10, column; 11, horizontal column; 12, adjustment block; 13, lifting cylinder; 2, stirring cup; 3, cover; 30, spiral groove; 31, hanging block; 4, stirring lifting assembly; 40, outer shell frame; 400, water permeable hole; 41, driving motor 1; 410, threaded rod; 42, matching rod; 420, water inlet hole; 421, drainage hole; 5, plugging lifting assembly; 50, fixed frame; 51, driving motor 2; 52, driving bevel gear; 53, driven bevel gear; 54, winding wheel; 55, hanging Hanging line; 56, connecting block; 560, closed groove; 561, inclined chamfer; 6, cleaning mechanism; 60, supporting frame; 61, cleaning cylinder; 62, folding telescopic tube; 63, branch pipe; 7, heating wire retracting and releasing mechanism; 70, supporting cylinder; 71, retractable electric motor; 72, heating wire; 73, counterweight ball; 8, stirring mechanism; 80, hanging column; 81, magnet one; 82, plug-in block; 820, supporting ball joint; 83, connecting rod one; 84, bevel gear one; 85, bevel gear two; 86, connecting rod two; 87, magnet two. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0028] like Figure 1 , Figure 2 As shown, a magnetic stirrer with a heating function comprises a base 1, a stirring cup 2 is placed on the base 1, a column 10 is arranged at the edge of the base 1, a cross column 11 is horizontally connected to the column 10, an adjusting block 12 is installed on the cross column 11, a lifting cylinder 13 is arranged on the adjusting block 12, the lifting cylinder 13 is connected to a blocking lifting component 5, the blocking lifting component 5 is connected to a cover 3, the installation axis of the cover 3 and the stirring cup 2 coincide with each other, a stirring lifting component 4 is arranged at the center of the cover 3, the stirring lifting component 4 is connected to a stirring mechanism 8, and a heating wire retracting mechanism 7 is arranged on the cover 3.

[0029] Specifically, when the main machine drives the magnets in the stirring cup 2 to stir, the cover 3 is lowered to the upper port of the stirring cup 2 through the sealing lifting assembly 5, and the bottom of the cover 3 is frosted, which can form a good sealing effect when in contact with the upper port of the stirring cup 2, thereby preventing the liquid from flowing out of the edge too quickly during stirring.

[0030] like Figure 3As shown, the stirring mechanism 8 includes a suspension column 80, the bottom of which is rotatably connected to a connecting rod 83, a plug-in block 82 is provided at the end of the connecting rod 83, a magnet 81 is plugged into the plug-in block 82, a supporting ball joint 820 is provided at the end of the plug-in block 82, a bevel gear 84 is fixedly provided on the connecting rod 83, a connecting rod 2 86 is horizontally provided at the end of the suspension column 80, the connecting rod 2 86 is rotatably connected to the suspension column 80, a bevel gear 2 85 is fixedly provided on the connecting rod 2 86, the bevel gear 1 84 and the bevel gear 2 85 are meshed with each other, and a magnet 2 87 is provided at the end of the connecting rod 2 86.

[0031] Specifically, the stirring efficiency is improved mainly by increasing the rotation speed of the magnets. However, when the rotation speed of the magnets is too high, the liquid is in a vortex shape, causing the liquid to contact the upper cover 3, and the cover 3 needs to be cleaned after stirring. By synchronously setting a horizontal connecting rod 2 86 at the end of the suspension column 80, when the magnet 1 81 rotates, the connecting rod 1 83 is driven to rotate, and the mutual meshing relationship between the bevel gear 1 84 and the bevel gear 2 85 is used to drive the connecting rod 2 86 and the magnet 2 87 to rotate synchronously. The rotation direction of the vortex caused by the rotation of the magnet 1 81 is weakened by the action of the magnet 2 87, so as to prevent the edge of the liquid vortex from rising and contacting the bottom of the cover 3 due to the high rotation speed. The magnet 2 87 disturbs the vortex and further improves the stirring effect.

[0032] Further, such as Figure 4 As shown, the stirring lifting assembly 4 includes an outer shell frame 40, which is hollow. A driving motor 41 is fixedly installed on the top of the outer shell frame 40, and the driving motor 41 is connected to a threaded rod 410. A matching rod 42 is installed in the outer shell frame 40, and the matching rod 42 is threadedly matched with the threaded rod 410, and the end of the matching rod 42 is fixedly connected to the suspension column 80.

[0033] Specifically, the threaded mating between the threaded rod 410 and the mating rod 42 in the outer shell frame 40 is controlled by driving the motor 41, and the mating rod 42 and the inside of the outer shell frame 40 are non-circularly mated. When the threaded rod 410 rotates, the mating rod 42 can only move up and down inside the outer shell frame 40, thereby driving the suspension column 80 at the bottom to move up and down, and then driving the stirring mechanism 8 to enter and exit the stirring cup 2.

[0034] Further, such as Figure 5As shown, the blocking lifting assembly 5 includes a fixed frame 50 connected to the lifting cylinder 13, the outer shell frame 40 is fixedly connected to the fixed frame 50, a driving motor 2 51 is fixedly installed on the side of the fixed frame 50, the driving motor 2 51 is connected to a driving bevel gear 52, and driven bevel gears 53 are symmetrically arranged in the fixed frame 50, and the driven bevel gears 53 are respectively meshed with the driving bevel gears 52, and a winding wheel 54 is coaxially arranged on the driven bevel gear 53, and a suspension line 55 is wound on the winding wheel 54, and a connecting block 56 is arranged at the end of the suspension line 55, and the connecting block 56 is sleeved with the outer shell frame 40, and the connecting block 56 is fixedly connected to the cover 3.

[0035] Specifically, the driving motor 2 51 drives the active bevel gear 52 and the driven bevel gear 53 in the fixed frame 50 to mesh with each other, and the driven bevel gears 53 on both sides rotate to drive the suspension wire 55 on the winding wheel 54 to perform synchronous retraction and release operations, and the suspension wire 55 drives the cover 3 to be lifted and lowered on the outside of the outer shell frame 40. It should be noted that since the driven bevel gears 53 on both sides rotate in opposite directions, the winding directions of the suspension wire 55 on the winding wheel 54 also need to be opposite, so as to achieve synchronous lifting and lowering operations of the suspension wire 55 on both sides.

[0036] Further, such as Figure 5 , Figure 6 , Figure 7 As shown, the heating wire retracting and releasing mechanism 7 includes a supporting tube 70 arranged on the cover 3, a retracting and releasing motor 71 is arranged on the supporting tube 70, a heating wire 72 is wound in the supporting tube 70, a spiral groove 30 is arranged in the cover 3, the heating wire 72 passes through the spiral groove 30, a hanging block 31 is arranged at the bottom of the cover 3, the spiral groove 30 extends into the hanging block 31, the heating wire 72 passes through the spiral groove 30 in the hanging block 31 and enters the stirring cup 2, and a counterweight ball 73 is arranged at the end of the heating wire 72.

[0037] Specifically, if the liquid needs to be heated while stirring, the heating wire 72 is sent into the stirring cup 2 through the heating wire retracting and releasing mechanism 7, and the support tube 70 is controlled to rotate in combination with the retracting and releasing motor 71 on the cover 3, so that the heating wire 72 is retracted and released. The heating wire 72 passes through the cover 3 and the spiral groove 30 in the bottom hanging block 31, so that it falls into the stirring cup 2 in a spiral shape, staggered between the magnetic son 1 81 and the magnetic son 2 87, and the stirred liquid is heated synchronously. A counterweight ball 73 is set at the end of the heating wire 72, so that the heating wire 72 can smoothly fall into the stirring cup 2 and participate in the heating.

[0038] Further, such as Figure 4 , Figure 7As shown, a cleaning mechanism 6 is also provided on the cover 3, and the cleaning mechanism 6 includes a support frame 60 connected to the fixed frame 50, and a cleaning cylinder 61 is provided on the support frame 60, and a water pump is provided in the cleaning cylinder 61, and the water pump is connected to a foldable telescopic tube 62, and a branch pipe 63 is provided at the end of the foldable telescopic tube 62, and one end of the branch pipe 63 is connected to the side of the connecting block 56, and the side of the outer shell frame 40 is evenly provided with water holes 400, and the penetration part of the connecting block 56 and the branch pipe 63 is opposite to the water hole 400, and the interior of the matching rod 42 is provided with a vertical water inlet hole 420, and the bottom edge of the matching rod 42 is provided with a curved drainage hole 421.

[0039] Specifically, the stirring mechanism 8 and the stirring lifting assembly 4 will come into contact with the liquid when entering the stirring cup 2. By evenly arranging water-permeable holes 400 on the outer shell frame 40 and setting a water inlet hole 420 on the inner side of the matching rod 42, the cleaning cylinder 61 is combined with the foldable telescopic tube 62 and the branch tube 63 to send the cleaning liquid into the outer shell frame 40 and the matching rod 42, and then flow to the stirring mechanism 8 at the bottom, thereby cleaning the connecting rod 1 83 and the magnet 1 81, and the connecting rod 2 86 and the magnet 2 87 can be removed from the suspension column 80 for separate cleaning.

[0040] Further, such as Figure 8 As shown, the other end of the branch pipe 63 points to the entrance of the spiral groove 30 , a closed groove 560 is provided on one side of the connection block 56 close to the water permeable hole 400 , and an inclined chamfer 561 is provided on the inner circle edge of the connection block 56 .

[0041] Specifically, when cleaning the heating wire 72 , the cleaning liquid enters through the spiral groove 30 to clean the heating wire 72 and the interior of the spiral groove 30 , thereby avoiding liquid residue.

[0042] Further, such as Figure 5 , Figure 6 As shown, the upper radius of the spiral groove 30 is smaller than the lower radius of the spiral groove 30 , and the diameter of the weighted ball 73 is larger than the inner diameter of the spiral groove 30 .

[0043] Specifically, in order to prevent the heating wire 72 from coming into contact with the magnet 1 81 or the magnet 2 87 after entering the stirring cup 2 and causing motion interference, the upper end radius of the spiral groove 30 is smaller than the lower end radius. At this time, when the heating wire 72 passes through the bottom port of the spiral groove 30, it hangs in the stirring cup 2 in a bell shape as a whole to heat the liquid.

[0044] The working principle of the embodiment of the present invention is:

[0045] like Figure 1-Figure 8As shown, by synchronously setting a horizontal connecting rod 2 86 at the end of the suspension column 80, when the magnet 1 81 rotates, the connecting rod 1 83 is driven to rotate, and the meshing relationship between the bevel gear 1 84 and the bevel gear 2 85 is used to drive the connecting rod 2 86 and the magnet 2 87 to rotate synchronously. The eddy current rotation direction caused by the rotation of the magnet 1 81 is weakened by the action of the magnet 2 87, so as to prevent the edge of the liquid eddy current from rising due to excessive rotation speed and contacting the bottom of the cover 3. The magnet 2 87 disturbs the eddy current and further improves the stirring effect. The threaded rod 410 in the outer shell frame 40 is controlled by the driving motor 1 41 to be threadedly matched with the matching rod 42. The matching rod 42 and the inner part of the outer shell frame 40 are non-circularly matched. When the threaded rod 410 rotates, the matching rod 42 can only move up and down inside the outer shell frame 40, thereby driving the suspension column 80 at the bottom to move up and down, and then driving the stirring mechanism 8 to enter and exit the stirring cup 2. The driving motor 2 51 drives the active bevel gear 52 and the driven bevel gear 53 in the fixed frame 50 to mesh with each other, and the driven bevel gears 53 on both sides rotate to drive the suspension wire 55 on the winding wheel 54 to perform synchronous retraction and release operations, and the suspension wire 55 drives the cover 3 to be lifted and lowered on the outside of the outer shell frame 40. It should be noted that since the driven bevel gears 53 on both sides rotate in opposite directions, the winding directions of the suspension wire 55 on the winding wheel 54 also need to be opposite, so as to achieve synchronous lifting and lowering operations of the suspension wire 55 on both sides. If the liquid needs to be heated while stirring, the heating wire 72 is sent into the stirring cup 2 through the heating wire retracting and releasing mechanism 7, and the support tube 70 is controlled to rotate in combination with the retracting and releasing motor 71 on the cover 3, so that the heating wire 72 is retracted and released. The heating wire 72 passes through the cover 3 and the spiral groove 30 in the bottom hanging block 31, so that it falls into the stirring cup 2 in a spiral shape, staggered between the magnetic son 1 81 and the magnetic son 2 87, and the stirred liquid is heated synchronously. A counterweight ball 73 is set at the end of the heating wire 72, so that the heating wire 72 falls smoothly into the stirring cup 2 and participates in heating. The stirring mechanism 8 and the stirring lifting assembly 4 will come into contact with the liquid when entering the stirring cup 2. By evenly setting water-permeable holes 400 on the outer shell frame 40 and setting a water inlet hole 420 on the inner side of the matching rod 42, the cleaning cylinder 61 combines the folding telescopic tube 62 and the branch tube 63 to send the cleaning liquid into the outer shell frame 40 and the matching rod 42, and then flow to the stirring mechanism 8 at the bottom, so as to clean the connecting rod 1 83 and the magnet 1 81, while the connecting rod 2 86 and the magnet 2 87 can be removed from the suspension column 80 for separate cleaning. In order to prevent the heating wire 72 from contacting the magnet 1 81 or the magnet 2 87 after entering the stirring cup 2, resulting in motion interference, the upper end radius of the spiral groove 30 is smaller than the lower end radius. At this time, when the heating wire 72 passes through the bottom port of the spiral groove 30, it hangs in the stirring cup 2 in a bell shape as a whole to heat the liquid.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. Any reference numeral in a claim shall not be regarded as limiting the claim involved.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A magnetic stirrer with a heating function, comprising a base (1), a stirring cup (2) being placed on the base (1), a vertical column (10) being arranged at the edge of the base (1), a horizontal column (11) being horizontally connected to the vertical column (10), an adjusting block (12) being installed on the horizontal column (11), and a lifting cylinder (13) being arranged on the adjusting block (12), wherein: The lifting cylinder (13) is connected to a blocking lifting assembly (5), the blocking lifting assembly (5) is connected to a sealing cover (3), the installation axes of the sealing cover (3) and the stirring cup (2) coincide with each other, a stirring lifting assembly (4) is arranged at the center of the sealing cover (3), the stirring lifting assembly (4) is connected to a stirring mechanism (8), and a heating wire retracting and releasing mechanism (7) is arranged on the sealing cover (3); The stirring mechanism (8) comprises a suspension column (80), the bottom of which is rotatably connected to a connecting rod 1 (83), the end of which is provided with a plug-in block (82), a magnet 1 (81) being plugged in and matched with the plug-in block (82), a supporting ball joint (820) being provided at the end of the plug-in block (82), a bevel gear 1 (84) being fixedly provided on the connecting rod 1 (83), a connecting rod 2 (86) being horizontally provided at the end of the suspension column (80), the connecting rod 2 (86) being rotatably connected to the suspension column (80), a bevel gear 2 (85) being fixedly provided on the connecting rod 2 (86), the bevel gear 1 (84) and the bevel gear 2 (85) being meshed with each other, and a magnet 2 (87) being provided at the end of the connecting rod 2 (86).

2. A magnetic stirrer with heating function according to claim 1, characterized in that: The stirring lifting assembly (4) comprises an outer shell frame (40), the outer shell frame (40) is hollow, a driving motor (41) is fixedly arranged on the top of the outer shell frame (40), the driving motor (41) is connected to a threaded rod (410), a matching rod (42) is mounted in the outer shell frame (40), the matching rod (42) and the threaded rod (410) are threadedly matched, and the end of the matching rod (42) is fixedly connected to the suspension column (80).

3. A magnetic stirrer with heating function according to claim 2, characterized in that: The plugging lifting assembly (5) comprises a fixed frame (50) connected to the lifting cylinder (13); the outer shell frame (40) and the fixed frame (50) are fixedly connected; a second driving motor (51) is fixedly mounted on the side of the fixed frame (50); the second driving motor (51) is connected to a driving bevel gear (52); driven bevel gears (53) are symmetrically arranged in the fixed frame (50); the driven bevel gears (53) are respectively meshed with the driving bevel gears (52); a winding wheel (54) is coaxially arranged on the driven bevel gear (53); a suspension wire (55) is wound on the winding wheel (54); a connecting block (56) is arranged at the end of the suspension wire (55); the connecting block (56) is sleeved with the outer shell frame (40); and the connecting block (56) is fixedly connected to the sealing cover (3).

4. A magnetic stirrer with heating function according to claim 1, characterized in that: The heating wire retracting and releasing mechanism (7) comprises a support tube (70) arranged on the cover (3), a retracting and releasing motor (71) being arranged on the support tube (70), a heating wire (72) being wound inside the support tube (70), a spiral groove (30) being arranged inside the cover (3), the heating wire (72) passing through the spiral groove (30), a hanging block (31) being arranged at the bottom of the cover (3), the spiral groove (30) extending into the hanging block (31), the heating wire (72) passing through the spiral groove (30) in the hanging block (31) and entering the stirring cup (2), and a weight ball (73) being arranged at the end of the heating wire (72).

5. A magnetic stirrer with heating function according to claim 2, characterized in that: The cover (3) is also provided with a cleaning mechanism (6), the cleaning mechanism (6) comprising a support frame (60) connected to the fixed frame (50), the support frame (60) being provided with a cleaning cylinder (61), the cleaning cylinder (61) being provided with a water pump, the water pump being connected to a folding telescopic tube (62), a branch tube (63) being provided at the end of the folding telescopic tube (62), one end of the branch tube (63) being connected to the side of the connecting block (56), the side of the outer shell frame (40) being evenly provided with water permeable holes (400), the connecting block (56) and the branch tube (63) penetrating part being directly opposite to the water permeable hole (400), the interior of the matching rod (42) being provided with a vertical water inlet hole (420), and the bottom edge of the matching rod (42) being provided with a curved drainage hole (421).

6. A magnetic stirrer with heating function according to claim 5, characterized in that: The other end of the branch pipe (63) points to the entrance of the spiral groove (30), a closed groove (560) is provided on one side of the connection block (56) close to the water permeable hole (400), and an inclined chamfer (561) is provided on the inner edge of the connection block (56).

7. The magnetic stirrer with heating function according to claim 4, characterized in that: The radius of the upper end of the spiral groove (30) is smaller than the radius of the lower end of the spiral groove (30), and the diameter of the weighted ball (73) is larger than the inner diameter of the spiral groove (30).

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