Constant-temperature magnetic stirrer

Abstract

The utility model discloses a constant-temperature magnetic stirrer which comprises a magnetic base, a heating groove is formed in the top of the magnetic base, a heating plate is arranged in the heating groove, a container is placed on the heating plate, clamping assemblies are installed on the magnetic base and located on the two sides of the heating plate, and cooling circulation assemblies are arranged on the clamping assemblies. A temperature measuring assembly is installed on one side of the magnetic base. According to the heating device, a solution in the container can be heated, cooling of the solution in the container can be accelerated, practicability is improved, the container is clamped through the clamping assembly, the container is fixed to the heating plate, side turning is prevented, the solution is prevented from being spilled out, and the stability of the container in the using process is improved.

Description

Technical Field

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

[0002] A magnetic stirrer is an instrument that utilizes the property of magnetic materials that like poles repel each other. It drives the magnetic stirrer to rotate by constantly changing the polarity of the two ends of the base, and then relies on the rotation of the magnetic stirrer to drive the sample to rotate, so that the sample is evenly mixed. The constant temperature magnetic stirrer is combined with a heating temperature control system. It can heat and control the sample temperature according to specific experimental requirements, maintain the temperature required by the experimental conditions, and ensure that the liquid mixing meets the experimental requirements. The constant temperature magnetic stirrer has the characteristics of high sensitivity, strong controllability, and a wide temperature control range.

[0003] A Chinese patent with prior art announcement number CN211537576U discloses a constant temperature magnetic stirrer, which is provided with a heating plate at the top center position of a magnetic stirring base, a solution vessel is placed at the top center position of the heating plate, support plates are vertically fixedly connected to the two corresponding sides of the top of the magnetic stirring base, a guide rod is slidably connected to the surface of the support plate, a clamping plate is fixedly connected to one end of the guide rod close to the solution vessel, a clamping spring is fixedly connected between the two corresponding sides of the clamping plate and the support plate and on the surface of the guide rod, so as to achieve the effect of fast and convenient clamping, have a reasonable and simple structure, be easy to operate and use, have good stability, reduce displacement or tipping of the vessel, avoid spilling of the solution, and improve work efficiency and performance.

[0004] Although the above patent can clamp the container and heat it through the heating plate, it can only heat up. When cooling is required, it can only cool naturally, which takes a long time.

[0005] Therefore, the applicant proposes a constant temperature magnetic stirrer to solve the above problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model aims to provide a constant temperature magnetic stirrer.

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

[0008] A constant temperature magnetic stirrer comprises a magnetic base, a heating groove is provided on the top of the magnetic base, a heating plate is arranged in the heating groove, a container is placed on the heating plate, clamping components are installed on both sides of the magnetic base at the heating plate, a cooling circulation component is provided on the clamping component, and a temperature measuring component is installed on one side of the magnetic base.

[0009] Furthermore, the magnetic base comprises a shell, a motor is installed in the shell, an output shaft of the motor is connected to a turntable, and a permanent magnet is provided on the turntable.

[0010] Furthermore, the clamping assembly includes mounting plates installed on both sides of the magnetic base, a connecting rod penetrating the mounting plate is slidably installed on the mounting plate, a clamping plate is installed at one end of the connecting rod, and a pulling block is installed at the other end of the connecting rod, a spring sleeved on the outer surface of the connecting rod is connected between the clamping plate and the mounting plate, a groove is provided on the side of the clamping plate away from the connecting rod, and a cooling circulation assembly is provided in the groove.

[0011] Furthermore, the cooling circulation component includes a serpentine bend installed in the groove and a water tank located on one side of the magnetic base, the water tank is provided with a water pump, the water inlet of the water pump is connected to the water tank through a first connecting pipe, the water outlet of the water pump is connected to one end of the serpentine bend through a pipe, and the other end of the serpentine bend is connected to the water tank through a pipe.

[0012] Furthermore, the water outlet of the water pump is connected to a second connecting pipe, the other end of the second connecting pipe is connected to a first three-way pipe, the first three-way pipe is connected to one end of a serpentine elbow through an inlet pipe, the other end of the serpentine elbow is connected to a second three-way pipe through an outlet pipe, and the second three-way pipe is connected to a water tank through a return pipe.

[0013] Furthermore, the temperature measuring component includes a vertical pole installed on one side of the magnetic base, a sleeve is slidably provided on the vertical pole, a locking screw is threadedly connected to one side of the sleeve, a cross bar is installed on one side of the sleeve, and a temperature sensor is installed on the cross bar.

[0014] Furthermore, a guide rod is installed on one side of the clamping plate close to the mounting plate, and one end of the guide rod away from the clamping plate passes through the mounting plate.

[0015] Furthermore, a one-way valve is provided on the water return pipe.

[0016] Furthermore, a refrigerator is provided in the water tank.

[0017] Furthermore, a limit block is installed on the vertical pole.

[0018] Compared with the prior art, the utility model provides a constant temperature magnetic stirrer, which has the following beneficial effects:

[0019] 1. The utility model heats the solution in the container by means of a heating plate, and clamps the container by means of a clamping assembly to fix it on the heating plate, thereby preventing it from tipping over and spilling the solution, and improving the stability of the container when in use. The outer wall of the container is cooled by means of a cooling circulation assembly, thereby cooling the solution, and achieving the effect of accelerating the cooling. The temperature in the solution is measured by means of a temperature measuring assembly, and constant temperature control is conveniently performed;

[0020] 2. The utility model uses a water pump to transport water in the water tank to the serpentine elbow to cool the outer wall of the container, thereby cooling the solution to achieve the effect of accelerating the cooling. The water in the serpentine elbow flows back to the water tank through the pipeline for recycling, saving water resources and improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0022] Figure 2 It is a main structural schematic diagram of the utility model;

[0023] Figure 3 It is a right side cross-sectional structural schematic diagram of the utility model;

[0024] Figure 4 It is a right view structural schematic diagram of the clamping plate of the utility model;

[0025] Figure 5 It is a schematic diagram of the top cross-sectional structure of the clamping plate of the utility model.

[0026] Markings in the figure: 1. Magnetic base; 11. Shell; 12. Motor; 13. Turntable; 14. Permanent magnet; 2. Heating tank; 3. Heating plate; 4. Container; 5. Clamping assembly; 51. Mounting plate; 52. Connecting rod; 53. Clamping plate; 54. Spring; 55. Pulling block; 56. Guide rod; 57. Groove; 6. Cooling cycle assembly; 61. Serpentine elbow; 62. Water tank; 63. Water pump; 64. First connecting pipe; 65. Second connecting pipe; 66. First three-way pipe; 67. Water inlet pipe; 68. Water outlet pipe; 69. Second three-way pipe; 70. Return pipe; 7. Temperature measuring assembly; 71. Vertical pole; 72. Sleeve; 73. Locking screw; 74. Cross bar; 75. Temperature sensor; 76. Limit block; 8. Refrigerator; 9. One-way valve; 10. Filling port; 15. Support foot. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0028] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0029] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0032] The utility model embodiment provides a constant temperature magnetic stirrer, referring to Figures 1 to 5 , including a magnetic base 1, a heating groove 2 is opened on the top of the magnetic base 1, a heating plate 3 is arranged in the heating groove 2, a container 4 is placed on the heating plate 3, and clamping components 5 are installed on both sides of the heating plate 3 on the magnetic base 1 to clamp the container 4 and fix it on the heating plate 3 to prevent it from tipping over and spilling the solution, thereby improving the stability of the container 4 when in use. A cooling circulation component 6 is provided on the clamping component 5 to cool the outer wall of the container 4, thereby cooling the solution to achieve the effect of accelerating the cooling. A temperature measuring component 7 is installed on one side of the magnetic base 1 to measure the temperature in the solution to facilitate constant temperature control.

[0033] Specifically, a heating wire is provided in the heating plate 3 , and the solution in the container 4 is heated by the heating wire; the temperature measuring component 7 is adjacent to the clamping components 5 on both sides.

[0034] Support feet 15 are installed at the four corners of the bottom of the magnetic base 1, so that the magnetic base 1 can achieve better stability when placed.

[0035] Reference Figure 3 In this embodiment, the magnetic base 1 includes a housing 11 , a motor 12 is installed in the housing 11 , an output shaft of the motor 12 is connected to a turntable 13 , and a permanent magnet 14 is provided on the turntable 13 .

[0036] Specifically, the motor 12 is vertically arranged; through the rotation of the permanent magnet 14 , the stirring bar in the container 4 can be driven to rotate, thereby stirring the solution in the container 4 .

[0037] Reference Figures 1 to 5 In this embodiment, the clamping assembly 5 includes mounting plates 51 installed on both sides of the magnetic base 1, and a connecting rod 52 is slidably installed on the mounting plate 51 and passes through the mounting plate 51. A clamping plate 53 is installed at one end of the connecting rod 52, and a pulling block 55 is installed at the other end of the connecting rod 52. A spring 54 is connected between the clamping plate 53 and the mounting plate 51 and is sleeved on the outer surface of the connecting rod 52. A groove 57 is opened on the side of the clamping plate 53 away from the connecting rod 52, and a cooling circulation assembly 6 is arranged in the groove 57.

[0038] Specifically, the clamping plate 53 is arranged in an arc shape to increase the contact area; a rubber pad is provided on one side of the clamping plate 53 close to the container 4 to avoid damage to the container 4.

[0039] By pulling the pulling block 55 outward, the clamping plate 53 moves outward and compresses the spring 54. At this time, the container 4 is placed on the heating plate 3, and then the pulling block 55 is released. Under the elastic force of the spring 54, the clamping plate 53 clamps the container 4 and fixes it on the heating plate 3 to prevent it from tipping over and the solution from spilling, thereby improving the stability of the container 4 when in use.

[0040] Among them, refer to Figure 1 and Figure 2 In this embodiment, a guide rod 56 is installed on one side of the clamping plate 53 close to the mounting plate 51 , and one end of the guide rod 56 away from the clamping plate 53 passes through the mounting plate 51 .

[0041] Specifically, there are four guide rods 56 on each clamping plate 53, which are located around the clamping plate 53. One end of the guide rod 56 is connected to the clamping plate 53, and the other end of the guide rod 56 passes through the mounting plate 51. The guide rod 56 increases the stability of the movement of the clamping plate 53, so that the clamping plate 53 can better clamp and fix the container 4.

[0042] Reference Figures 1 to 5In this embodiment, the cooling circulation component 6 includes a serpentine elbow 61 installed in the groove 57 and a water tank 62 located on one side of the magnetic base 1. A water pump 63 is provided on the water tank 62. The water inlet of the water pump 63 is connected to the water tank 62 through a first connecting pipe 64. The water outlet of the water pump 63 is connected to one end of the serpentine elbow 61 through a pipeline. The other end of the serpentine elbow 61 is connected to the water tank 62 through a pipeline. Water is recycled, water resources are saved, and the use effect of the device is improved.

[0043] Specifically, the serpentine bend 61 is an arc-shaped serpentine bend 61, which is compatible with the arc structure of the clamping plate 53, so that the serpentine bend 61 can better contact the outer wall of the container 4, and can better cool the container 4, thereby improving the cooling effect; the other end of the serpentine bend 61 is connected to the lower part of the water tank 62 through a pipe; a filling port 10 is provided on one side of the water tank 62 to facilitate adding water to the water tank 62; a drain port is provided on one side of the lower part of the water tank 62 to facilitate the discharge of water in the water tank 62.

[0044] Among them, refer to Figure 1 and Figure 2 In this embodiment, the water outlet of the water pump 63 is connected to a second connecting pipe 65, the other end of the second connecting pipe 65 is connected to a first three-way pipe 66, the first three-way pipe 66 is connected to one end of the serpentine elbow 61 through a water inlet pipe 67, the other end of the serpentine elbow 61 is connected to a second three-way pipe 69 through a water outlet pipe 68, and the second three-way pipe 69 is connected to the water tank 62 through a return pipe 70.

[0045] Specifically, the first three-way pipe 66 and the second three-way pipe 69 have the same structure and both have three branches, wherein one branch of the first three-way pipe 66 is connected to the second connecting pipe 65, and the other two branches of the first three-way pipe 66 are respectively connected to the two serpentine bends 61 through the water inlet pipe 67; one branch of the second three-way pipe 69 is connected to the return pipe 70, and the other two branches of the second three-way pipe 69 are respectively connected to the two serpentine bends 61 through the water outlet pipe 68; the water inlet pipe 67 and the water outlet pipe 68 are corrugated hoses; the second three-way pipe 69 is connected to the lower part of the water tank 62 through the water return pipe 70.

[0046] Reference Figure 1 and Figure 2 In this embodiment, a one-way valve 9 is provided on the return pipe 70 to prevent the water in the water tank 62 from flowing back into the return pipe 70 .

[0047] Reference Figure 2 In this embodiment, a refrigerator 8 is provided in the water tank 62 to ensure the cooling quality and improve the cooling effect. The refrigerator 8 is widely used in this field, and its structure and principle are well known to those skilled in the art, so it will not be described in detail here.

[0048] Reference Figures 1 to 3 In this embodiment, the temperature measuring component 7 includes a vertical rod 71 installed on one side of the magnetic base 1, a sleeve 72 is slidably provided on the vertical rod 71, a locking screw 73 is threadedly connected to one side of the sleeve 72, a cross bar 74 is installed on one side of the sleeve 72, and a temperature sensor 75 is installed on the cross bar 74 to measure the temperature in the solution and facilitate constant temperature control.

[0049] Specifically, the sleeve 72 can be fixed on the vertical pole 71 by the locking screw 73 , so as to facilitate the adjustment of the height of the temperature sensor 75 ; the sleeve 72 can slide along the vertical pole 71 and can also rotate around the axis of the vertical pole 71 .

[0050] Reference Figures 1 to 3 In this embodiment, a limit block 76 is installed on the vertical rod 71, which can limit the sleeve 72 when it slips, preventing the temperature sensor 75 from falling and touching the bottom of the container 4, effectively avoiding the risk of collision between the temperature sensor 75 and the stirrer, making the device safer when in use.

[0051] In this embodiment, the heating plate 3, the motor 12, the water pump 63, the temperature sensor 75 and the refrigerator 8 are all existing technologies and will not be described in detail here.

[0052] Working principle: when in use, by pulling the pulling block 55 outward, the clamping plate 53 moves outward and compresses the spring 54. At this time, the container 4 containing the solution is placed on the heating plate 3, and then the pulling block 55 is released. Under the elastic force of the spring 54, the clamping plate 53 clamps the container 4 and fixes it on the heating plate 3 to prevent it from tipping over and spilling the solution, thereby improving the stability of the container 4 when in use. Then, a stirring bar is placed in the container 4. At this time, the locking screw 73 is loosened again, and the height of the sleeve 72 is adjusted, thereby adjusting the height of the temperature sensor 75 to facilitate temperature measurement. After adjustment, the locking screw 73 is tightened. At this time, the heating plate 3 is turned on to heat the solution in the container 4. At the same time, the motor 12 is started. The motor 12 drives the turntable 13 to rotate through the output shaft, and the turntable 13 drives the permanent magnet 14 to rotate, thereby driving the stirring bar in the container 4 to rotate, thereby stirring the solution in the container 4.

[0053] When the solution in the container 4 needs to be cooled, the water in the water tank 62 is pumped into the serpentine elbow 61 through the first connecting pipe 64, the second connecting pipe 65, the first three-way pipe 66 and the water inlet pipe 67 by the water pump 63, and the water then flows back to the water tank 62 from the other end of the serpentine elbow 61 through the outlet pipe 68, the second three-way pipe 69 and the return pipe 70. At this time, the one-way valve 9 is in an open state, and the outer wall of the container 4 is cooled through the serpentine elbow 61, thereby cooling the solution, achieving the effect of accelerating the cooling, and recycling the water, saving water resources and improving the use effect of the device.

[0054] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0055] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A constant temperature magnetic stirrer, comprising a magnetic base (1), characterized in that: A heating groove (2) is provided on the top of the magnetic base (1), a heating plate (3) is provided in the heating groove (2), a container (4) is placed on the heating plate (3), clamping components (5) are installed on both sides of the magnetic base (1) on the heating plate (3), a cooling circulation component (6) is provided on the clamping component (5), and a temperature measuring component (7) is installed on one side of the magnetic base (1); The clamping assembly (5) comprises mounting plates (51) mounted on both sides of the magnetic base (1); a connecting rod (52) penetrating the mounting plate (51) is slidably mounted on the mounting plate (51); a clamping plate (53) is mounted on one end of the connecting rod (52); a pulling block (55) is mounted on the other end of the connecting rod (52); a spring (54) sleeved on the outer surface of the connecting rod (52) is connected between the clamping plate (53) and the mounting plate (51); a groove (57) is formed on a side of the clamping plate (53) away from the connecting rod (52); a cooling circulation assembly (6) is arranged in the groove (57); The cooling circulation component (6) comprises a serpentine curved pipe (61) installed in the groove (57) and a water tank (62) located on one side of the magnetic base (1); a water pump (63) is provided on the water tank (62); a water inlet of the water pump (63) is connected to the water tank (62) via a first connecting pipe (64); a water outlet of the water pump (63) is connected to one end of the serpentine curved pipe (61) via a pipeline; and the other end of the serpentine curved pipe (61) is connected to the water tank (62) via a pipeline.

2. The constant temperature magnetic stirrer according to claim 1, characterized in that: The magnetic base (1) comprises a housing (11), a motor (12) is installed in the housing (11), an output shaft of the motor (12) is connected to a turntable (13), and a permanent magnet (14) is provided on the turntable (13).

3. The constant temperature magnetic stirrer according to claim 1, characterized in that: The water outlet of the water pump (63) is connected to a second connecting pipe (65), the other end of the second connecting pipe (65) is connected to a first three-way pipe (66), the first three-way pipe (66) is connected to one end of a serpentine elbow (61) via a water inlet pipe (67), the other end of the serpentine elbow (61) is connected to a second three-way pipe (69) via a water outlet pipe (68), and the second three-way pipe (69) is connected to a water tank (62) via a water return pipe (70).

4. The constant temperature magnetic stirrer according to claim 1, characterized in that: The temperature measuring assembly (7) comprises a vertical rod (71) mounted on one side of the magnetic base (1); a sleeve (72) is slidably mounted on the vertical rod (71); a locking screw (73) is threadedly connected to one side of the sleeve (72); a cross bar (74) is mounted on one side of the sleeve (72); and a temperature sensor (75) is mounted on the cross bar (74).

5. The constant temperature magnetic stirrer according to claim 1, characterized in that: A guide rod (56) is installed on one side of the clamping plate (53) close to the mounting plate (51), and an end of the guide rod (56) away from the clamping plate (53) passes through the mounting plate (51).

6. The constant temperature magnetic stirrer according to claim 3, characterized in that: The water return pipe (70) is provided with a one-way valve (9).

7. The constant temperature magnetic stirrer according to claim 3, characterized in that: A refrigerator (8) is provided in the water tank (62).

8. The constant temperature magnetic stirrer according to claim 4, characterized in that: A limit block (76) is installed on the vertical pole (71).

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