Adjustable constant-temperature magnetic stirrer

Abstract

The utility model relates to an adjustable constant-temperature magnetic stirrer. The device comprises a bottom plate, a water bath kettle arranged at the top of the bottom plate, a centering unit annularly arranged on the outer side of the water bath kettle, a carrier plate arranged above the water bath kettle in a liftable manner, a moving plate arranged on one side, close to the water bath kettle, of the carrier plate in a relatively movable manner, and a second clamping plate fixed on one side, opposite to the moving plate, of the carrier plate, and the centering unit is used for centering and clamping the water bath pot. When the adjustable constant-temperature magnetic stirrer disclosed by the utility model is used, a water bath kettle is placed on the bottom plate, and the centering clamping of the water bath kettle is realized through the centering unit; after a proper amount of water or heat-conducting oil is added into the water bath kettle, the containing cup is clamped by the second clamping plate, the stirrer is placed into the cup container, then the carrying plate drives the containing cup to descend into the water bath kettle, and the stirrer rotates in the cup container to complete stirring of liquid in the containing cup. Vibration generated by rotation of the stirrer does not affect the position of the containing cup, the containing cup is not in contact with the side wall of the water bath kettle all the time, and leakage of an internal solution caused by damage of the containing cup is avoided; and the arrangement of the centering unit can meet the magnetic stirring work of containing cups with different sizes, so that the universality is higher, and the processing cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic stirrers, and in particular relates to an adjustable constant-temperature magnetic stirrer. Background Art

[0002] The magnetic stirrer is a common stirring device, which is widely used in the fields of biopharmaceuticals, food and beverages, and chemicals. It uses magnetic drive (that is, by placing a magnetic stirrer in a container and using a magnetic field to drive the stirrer to rotate in a circle, thereby achieving the purpose of stirring the liquid), realizing shaft-free sealing and avoiding the leakage problem of traditional mechanical seals.

[0003] In actual use, first place the cup in the middle of the stainless steel container, add water or heat transfer oil to the stainless steel container to an appropriate height, put the stirrer into the cup solution, and use the magnetic field to drive the stirrer (usually a magnetic object) to rotate in the cup liquid, thereby stirring the liquid in the cup. The magnetic field here is usually generated by a motor-driven magnet, which makes the stirrer produce a circular motion in the liquid to achieve the purpose of mixing and homogenizing the liquid.

[0004] When using an existing magnetic stirrer, a certain specific specification of the magnetic stirrer can only be adapted to a cup of a specified size. When facing cups of different diameters, a matching magnetic stirrer needs to be replaced, which has poor versatility and high processing cost. In addition, the cup containing the solution is directly placed in a stainless steel container (i.e., a water bath or an oil bath). As the stirrer rotates in the cup, the vibration generated will drive the cup to deviate from its original placement position, causing the cup to gradually contact the side wall of the stainless steel container. Under the influence of the vibration, the glass cup collides with the side wall of the stainless steel container, causing the cup to break, resulting in leakage of the solution in the cup, posing certain safety hazards. Utility Model Content

[0005] The utility model provides an adjustable constant temperature magnetic stirrer, which solves the defects of poor versatility of the existing magnetic stirrer and the fact that the containing cup is easily broken due to contact with the side wall of a stainless steel container under the influence of vibration.

[0006] In order to achieve the above object, the technical solution adopted by the utility model is: an adjustable constant temperature magnetic stirrer, which comprises:

[0007] A bottom plate, a water bath arranged on the top of the bottom plate, a centering unit arranged around the outside of the water bath, a carrier plate arranged above the water bath in a liftable manner, a movable plate arranged on the carrier plate near the water bath in a relatively movable manner, and a second clamping plate fixed on the opposite side of the movable plate;

[0008] The centering unit is used for centering and clamping the water bath.

[0009] Optimally, the angle between each two adjacent groups of centering units is 120°, and each group of the centering units includes a support plate fixed to the top of the bottom plate and a first clamping plate elastically mounted on the inner side of the support plate, and the inner side of the first clamping plate cooperates with the outer side of the water bath.

[0010] Optimally, it further comprises an avoidance groove vertically penetrating the second clamping plate and clamping parts arranged on both sides of the avoidance groove, and the clamping parts are in a "V" shape.

[0011] Optimally, the centering unit also includes a centering shaft fixed on the first clamping plate and passing through the support plate, an anti-slip block fixed on the end of the centering shaft away from the first clamping plate, and a spring sleeved on the centering shaft, wherein the spring is located between the first clamping plate and the support plate, and the diameter of the anti-slip block is larger than the diameter of the centering shaft.

[0012] Optimally, the centering unit further comprises a slide rail fixed on the top of the base plate, a slider slidably mounted on the slide rail, and a synchronization plate fixed on the centering shaft, wherein the synchronization plate is fixed on the slider, and the spring is located between the synchronization plate and the support plate.

[0013] Optimally, it also includes a support frame arranged on one side of the base plate, a slide plate integrally connected to the inner side of the support frame, a lifting plate arranged in the support frame, slide grooves opened on both sides of the lifting plate and clamped on the slide plate, and a lifting cylinder fixed on the top of the support frame and connected to the lifting plate, and the carrier plate is fixed on the lifting plate.

[0014] Optimally, it also includes a limit groove opened on the carrier plate, a limit protrusion integrally connected to one side of the movable plate and cooperating with the limit groove, a flip plate rotatably mounted on the carrier plate, and an adapter plate rotatably connected to the flip plate at one end and rotatably connected to the movable plate at the other end.

[0015] Optimally, it also includes a fixing column fixed on the top of the base plate, an adjusting sleeve sleeved on the fixing column, an extension plate fixed on one side of the adjusting sleeve, clamping tweezers fixed on the side of the extension plate away from the adjusting sleeve, and a temperature sensor clamped on the clamping tweezers, wherein the temperature sensor is inserted into the water bath.

[0016] Optimally, it also includes inner fixing holes which are arranged on the fixing column at intervals along the vertical direction and outer fixing holes which penetrate the adjusting sleeve and match the inner fixing holes.

[0017] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0018] When the adjustable constant temperature magnetic stirrer of the utility model is used, a water bath is placed on a bottom plate, and the water bath is clamped in a centering manner through a centering unit; after a proper amount of water or heat transfer oil is added into the water bath, a serving cup is clamped through a second clamping plate, a stirring bar is placed into the serving cup container, and then the serving cup is driven by a carrier plate to descend into the water bath, and the stirring bar rotates in the serving cup container to complete the stirring of the liquid in the serving cup; since the serving cup is clamped in the second clamping plate, the vibration generated by the rotation of the stirring bar will not affect the position of the serving cup, and the serving cup is always not in contact with the side wall of the water bath, thereby avoiding damage to the serving cup and causing leakage of the internal solution; and the setting of the centering unit can replace water baths of different sizes to meet the magnetic stirring work of serving cups of different sizes, so that the utility model has stronger versatility and saves the cost of equipment processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the utility model from another angle;

[0021] Figure 3 It is the front view of the utility model;

[0022] Figure 4 It is a top view of the utility model;

[0023] Figure 5 For this utility model Figure 1 The enlarged view of point A in the middle;

[0024] Description of reference numerals:

[0025] 1. Bottom plate; 2. Water bath; 3. Slide rail; 4. Slider; 5. Synchronous plate; 6. Centering shaft; 7. Support plate; 8. Anti-slip block; 9. Spring; 10. First clamping plate; 11. Fixed column; 12. Internal fixing hole; 13. Adjustment sleeve; 14. External fixing hole; 15. Extension plate; 16. Clamping tweezers; 17. Temperature sensor; 18. Support frame; 19. Slide plate; 20. Lifting plate; 21. Slide groove; 22. Lifting cylinder; 23. Carrying plate; 24. Limiting groove; 25. Moving plate; 26. Limiting protrusion; 27. Second clamping plate; 28. Avoiding groove; 29. ​​Clamping part; 30. Flipping plate; 31. Adapter plate. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0027] like Figure 1-4 As shown, it is a schematic diagram of the structure of the adjustable constant temperature magnetic stirrer of the utility model. The water bath 2 is placed on the bottom plate 1 for experiment. The inner wall of the water bath 2 is provided with a heating tube for adding water or heat transfer oil into the water bath 2.

[0028] The centering unit is arranged around the outside of the water bath 2. When magnetic stirring is required for cups of different sizes, the water bath 2 that matches the cups needs to be replaced. The centering unit arranged around the water bath 2 can ensure the centering of the water bath 2 and ensure that the water bath 2 is in the center position, so as to avoid the position of the water bath 2 being offset due to vibration during subsequent stirring of the liquid in the cup, thereby affecting the effect of magnetic stirring.

[0029] There are three groups of centering units, and the angle between each two adjacent groups of centering units is 120°. Each group of centering units includes a slide rail 3, a slider 4, a synchronization plate 5, a centering shaft 6, a support plate 7, an anti-drop block 8, a spring 9 and a first clamping plate 10. The slide rail 3 is fixed to the top of the base plate 1 by screw fastening, and the slider 4 is slidably installed on the slide rail 3.

[0030] The support plate 7 is vertically fixed to the bottom of the base plate 1 and is located on the side of the slide rail 3 away from the water bath 2. The centering shaft 6 horizontally penetrates the support plate 7, and a first clamping plate 10 is fixed to the end of the centering shaft 6 close to the water bath 2. Three groups of first clamping plates 10 are arranged around the outer periphery of the water bath 2. When the water bath 2 of different sizes is replaced, the three groups of first clamping plates 10 are synchronously opened outward or moved inward to clamp the water bath 2 to prevent the water bath 2 from being offset.

[0031] The first clamping plate 10 is arc-shaped. When clamping the water bath 2, the inner wall of the first clamping plate 10 fits with the outer wall of the water bath 2, and the contact area between the two is sufficient, thereby improving the clamping stability.

[0032] The synchronous plate 5 is fixed on the centering shaft 6, and the spring 9 is sleeved on the centering shaft 6, and the spring 9 is located between the synchronous plate 5 and the support plate 7. When the water bath 2 of different sizes is replaced, the first clamping plate 10 will be pushed outward. At the same time, the synchronous plate 5 and the centering shaft 6 move outward synchronously until the spring 9 is compressed. Under the reverse force of the spring 9, the first clamping plate 10 is pressed against the outer peripheral surface of the water bath 2, thereby completing the centering clamping of the water bath 2. The presence of the spring 9 makes the clamping of the water bath 2 elastic, avoiding leaving clamping marks on the outer wall of the water bath 2.

[0033] The anti-slip block 8 is fixed to one end of the centering shaft 6 away from the water bath 2 , and the diameter of the anti-slip block 8 is larger than the diameter of the centering shaft 6 , so as to prevent the centering shaft 6 from slipping out of the support plate 7 .

[0034] The slide rail 3 is fixed to the top of the base plate 1 by screw fastening, the slider 4 is slidably installed on the slide rail 3, and the synchronization plate 5 is fixed to the top of the slider 4. When the water bath 2 of different diameters is replaced, the synchronization plate 5 will move outward or inward. By setting the slide rail 3 and the slider 4, the stability of the movement of the synchronization plate 5 can be guaranteed; and the slide rail 3 and the slider 4 can also play a role in supporting the synchronization plate 5, avoiding the centering axis 6 from tilting downward under the influence of gravity, avoiding affecting the centering clamping of the water bath 2.

[0035] The fixing column 11 is vertically fixed on the top of the bottom plate 1 and is located on one side of the water bath 2. The inner fixing holes 12 are arranged on the fixing column 11 at intervals along the vertical direction. The adjusting sleeve 13 is sleeved on the fixing column 11, and the adjusting sleeve 13 is provided with an outer fixing hole 14 that matches the inner fixing hole 12, and the fixing of the adjusting sleeve 13 and the fixing column 11 is completed with a fastening nut.

[0036] By adjusting the height of the adjustment sleeve 13, the height at which the temperature sensor 17 is inserted into the water bath 2 can be changed to detect the temperature of the water or heat transfer oil in the water bath 2 in real time and ensure that the magnetic stirring is in a constant temperature state (in actual use, different sizes of cups will use water baths 2 of different sizes, so the amount of water or heat transfer oil added to the water bath 2 is also different, so it is necessary to set a temperature sensor 17 with adjustable height).

[0037] The extension plate 15 is fixed on the outside of the adjustment sleeve 13 and extends toward the side of the water bath 2. The clamping forceps 16 are fixed on the side of the extension plate 15 away from the adjustment sleeve 13. The clamping forceps 16 can be ordinary tweezers available on the market. The temperature sensor 17 is clamped by the clamping forceps 16 and extends into the water bath 2 to detect the temperature of the water or heat transfer oil in the water bath 2 in real time.

[0038] The support frame 18 is arranged on one side of the bottom plate 1, the lifting plate 20 is arranged in the support frame 18, and the lifting cylinder 22 is fixed on the top of the support frame 18 and connected to the lifting plate 20, and is used to drive the lifting plate 20 to do lifting and lowering movements. The slide plate 19 is integrally connected to the inner side of the support frame 18 and is arranged oppositely. The outer side of the lifting plate 20 begins to have a slide groove 21 that matches the slide plate 19. The slide plate 19 is inserted into the slide groove 21. When the lifting cylinder 22 drives the lifting plate 20 to move, the cooperation between the slide plate 19 and the slide groove 21 is relied on to ensure the stability of the lifting and lowering movement of the lifting plate 20.

[0039] The carrier plate 23 is fixed to the side of the lifting plate 20 close to the water bath 2. The carrier plate 23 rises and falls synchronously with the lifting plate 20, thereby driving the cup to rise and fall in the water bath 2 (when magnetic stirring is performed, the carrier plate 23 drives the cup to descend into the water bath 2. After the magnetic stirring is completed, the carrier plate 23 drives the cup to rise and leave the water bath 2, which is convenient for the staff to take and put). There are two movable plates 25, and the two movable plates 25 can move inward or outward synchronously to clamp cups of different sizes.

[0040] like Figure 5 As shown, a second clamping plate 27 is fixed on the opposite side of the two movable plates 25, and the second clamping plate 27 is used to clamp the cup to be magnetically stirred. The avoidance groove 28 vertically penetrates the second clamping plate 27, and clamping parts 29 are respectively provided on both sides of the avoidance groove 28. The two sets of clamping parts 29 are in a "V" shape, and when clamping the cup, centering can be achieved. In addition, the setting of the avoidance groove 28 can avoid the side wall of the cup at the diameter to prevent the cup from being clamped and exploded.

[0041] The flip plate 30 is rotatably mounted on one side of the carrier plate 23 close to the water bath 2, one side of the adapter plate 31 is rotatably connected to the moving plate 25, and the other side of the adapter plate 31 is rotatably connected to one end of the flip plate 30. The moving cylinder is fixed on the carrier plate 23 and connected to one of the moving plates 25. When the moving cylinder pushes one of the moving plates 25 to move inward, the other moving plate 25 is driven to move inward synchronously through the cooperation of the adapter plate 31 and the flip plate 30, thereby driving the two second clamping plates 27 to move inward to clamp the cup to be magnetically stirred.

[0042] The limiting groove 24 is horizontally opened on one side of the carrier plate 23 close to the water bath 2, and the limiting protrusion 26 is integrally connected to the movable plate 25 and is clamped in the limiting groove 24. On the one hand, the stability of the movable plate 25 during movement is improved, and on the other hand, the limiting cooperation between the limiting protrusion 26 and the limiting groove 24 is relied on to prevent the movable plate 25 from overturning.

[0043] The working principle of the adjustable constant temperature magnetic stirrer of the utility model:

[0044] First, select a suitable water bath 2 according to the size of the serving cup, place the water bath 2 on the bottom plate 1, and use the centering unit to clamp the water bath 2; add a proper amount of water or heat transfer oil into the water bath 2, and adjust the height of the adjusting sleeve 13 appropriately, and insert the temperature sensor 17 into the liquid in the water bath 2; clamp the serving cup through the second clamping plate 27, put the stirring bar into the serving cup container, and then the lifting cylinder 22 drives the serving cup to descend into the water bath 2, and the stirring bar rotates in the serving cup container to complete the stirring of the liquid in the serving cup.

[0045] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An adjustable constant temperature magnetic stirrer, characterized in that: It includes: A bottom plate (1), a water bath (2) arranged on the top of the bottom plate (1), a centering unit arranged around the outside of the water bath (2), a carrier plate (23) arranged above the water bath (2) in a manner that allows it to be lifted, a movable plate (25) arranged relatively movably on a side of the carrier plate (23) close to the water bath (2), and a second clamping plate (27) fixed on the opposite side of the movable plate (25); The centering unit is used for centering and clamping the water bath (2).

2. The adjustable constant temperature magnetic stirrer according to claim 1, characterized in that: The angle between each two adjacent groups of centering units is 120°, and each group of centering units comprises a support plate (7) fixed on the top of the base plate (1) and a first clamping plate (10) elastically mounted on the inner side of the support plate (7), wherein the inner side of the first clamping plate (10) matches the outer side of the water bath (2).

3. The adjustable constant temperature magnetic stirrer according to claim 1, characterized in that: It also includes an avoidance groove (28) vertically penetrating the second clamping plate (27) and clamping portions (29) arranged on both sides of the avoidance groove (28), wherein the clamping portions (29) are in a "V" shape.

4. The adjustable constant temperature magnetic stirrer according to claim 2, characterized in that: The centering unit further comprises a centering shaft (6) fixed on the first clamping plate (10) and penetrating the support plate (7), an anti-slip block (8) fixed on the end of the centering shaft (6) away from the first clamping plate (10), and a spring (9) sleeved on the centering shaft (6), wherein the spring (9) is located between the first clamping plate (10) and the support plate (7), and the diameter of the anti-slip block (8) is larger than the diameter of the centering shaft (6).

5. The adjustable constant temperature magnetic stirrer according to claim 4, characterized in that: The centering unit further comprises a slide rail (3) fixed on the top of the base plate (1), a slider (4) slidably mounted on the slide rail (3), and a synchronization plate (5) fixed on the centering shaft (6); the synchronization plate (5) is fixed on the slider (4); and the spring (9) is located between the synchronization plate (5) and the support plate (7).

6. The adjustable constant temperature magnetic stirrer according to claim 1, characterized in that: It also includes a support frame (18) arranged on one side of the base plate (1), a slide plate (19) integrally connected to the inner side of the support frame (18), a lifting plate (20) arranged in the support frame (18), a slide groove (21) provided on both sides of the lifting plate (20) and clamped on the slide plate (19), and a lifting cylinder (22) fixed on the top of the support frame (18) and connected to the lifting plate (20), and the carrier plate (23) is fixed on the lifting plate (20).

7. The adjustable constant temperature magnetic stirrer according to claim 1, characterized in that: It also includes a limiting groove (24) provided on the carrier plate (23), a limiting protrusion (26) integrally connected to one side of the movable plate (25) and cooperating with the limiting groove (24), a flip plate (30) rotatably mounted on the carrier plate (23), and an adapter plate (31) rotatably connected to the flip plate (30) at one end and rotatably connected to the movable plate (25) at the other end.

8. The adjustable constant temperature magnetic stirrer according to claim 1, characterized in that: It also includes a fixing column (11) fixed on the top of the bottom plate (1), an adjusting sleeve (13) sleeved on the fixing column (11), an extension plate (15) fixed on one side of the adjusting sleeve (13), a clamping forceps (16) fixed on the side of the extension plate (15) away from the adjusting sleeve (13), and a temperature sensor (17) clamped on the clamping forceps (16), wherein the temperature sensor (17) is inserted into the water bath (2).

9. The adjustable constant temperature magnetic stirrer according to claim 8, characterized in that: It also includes inner fixing holes (12) arranged at intervals on the fixing column (11) in the vertical direction and outer fixing holes (14) penetrating the adjustment sleeve (13) and matching with the inner fixing holes (12).

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