A thermostat water bath kettle

Abstract

This utility model discloses a constant temperature water bath, belonging to the technical field of constant temperature water baths. It includes a constant temperature water bath with a water bath heating chamber. A fixing frame is provided inside the heating chamber. The fixing frame includes a base plate and a top plate, with four uprights connecting the base plate and the top plate. Several fixing grooves are formed on the top surface of the top plate. A first adjusting plate is fixedly installed in each fixing groove. A driving ring is rotatably connected to the outer side of the first adjusting plate, and the driving ring is located above the top plate. A second adjusting plate is fixedly installed inside the driving ring. A first driving groove is formed on the top surface of the first adjusting plate, and several second driving grooves are formed on the top surface of the second adjusting plate. Several fixing blocks are provided between the first and second adjusting plates. A first driving block that slides in the first driving groove is installed on the bottom surface of each fixing block, and a second driving block that slides in the second driving groove is installed on the top surface of each fixing block. A first through hole and a second through hole are respectively formed at the center of the first and second adjusting plates.

Description

Technical Field

[0001] This utility model relates to the field of constant temperature water bath technology, specifically a constant temperature water bath. Background Technology

[0002] Thermostatic water baths are essential tools for scientific research in biological, environmental, pharmaceutical, health, and chemical laboratories, as well as in the field of fine chemical analysis. They are widely used for concentrating, distilling, and heating chemical reagents.

[0003] Chinese Patent No. CN201795588U discloses an electric thermostatic water bath, which includes a water bath tank and a control box, with the control box located on the right side of the tank body. The water bath tank includes a tank body, an inner liner, a heating element, a top cover, and a top ring cover. The inner liner is located inside the tank body, the heating element is installed at the bottom of the inner liner, and the top cover and top ring cover are located at the top of the tank body. The control box includes a thermostat, a power switch, and indicator lights. This utility model has a reasonable structural design, good sealing performance, and adopts a high-precision digital thermostat for intelligent control, making it more accurate and reliable.

[0004] In the heating process for testing chemical reagents, the reagents must first be placed in test tubes or beakers, and then the containers containing the reagents are placed in the water bath at the top of the water bath for heating. Beakers, with their flat bottoms and large contact area, can be placed stably in the water bath, meeting the stability requirements during heating. However, test tubes, with their curved bottoms, high center of gravity, and small contact area with the water bath, are prone to tipping over due to uneven stress when placed directly, affecting heating efficiency and potentially causing reagent spillage, posing a safety hazard. Utility Model Content

[0005] The purpose of this invention is to provide a constant temperature water bath to solve the problems mentioned in the background art.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] A constant temperature water bath includes a water bath with a water bath heating chamber. A fixing frame is provided inside the water bath heating chamber. The fixing frame includes a base plate and a top plate. Four uprights are connected between the base plate and the top plate. A plurality of fixing grooves are formed on the top surface of the top plate. A first adjusting plate is fixedly installed in each fixing groove. A driving ring is rotatably connected to the outer side of the first adjusting plate, and the driving ring is located above the top plate. A second adjusting plate is fixedly installed inside the driving ring. A first driving groove is formed on the top surface of the first adjusting plate, and a plurality of second driving grooves are formed on the top surface of the second adjusting plate. Several fixing blocks are provided between the first and second adjusting plates. A first driving block that slides in a first driving groove is installed on the bottom surface of the fixing blocks, and a second driving block that slides in a second driving groove is installed on the top surface of the fixing blocks. A first through hole and a second through hole are respectively opened at the center of the first and second adjusting plates. The fixing blocks can be synchronously adjusted by rotating the driving ring, which can accommodate test tubes of different diameters without changing the clamps, thus improving the versatility of the equipment. The fixing blocks provide stable clamping for the test tubes, preventing the test tubes from tipping over during water bath heating, reducing the risk of reagent spillage, and ensuring experimental safety and heating efficiency.

[0008] Furthermore, the top view of the first driving groove is a regular hexagon, and the first through hole is located at the center of the first driving groove. The second driving grooves and fixing blocks are all set in six groups, and the six groups of second driving grooves are evenly distributed circumferentially on the outside of the second through hole. The top view of the fixing block is an isosceles triangle, and the six groups of fixing blocks are always in contact. The six groups of fixing blocks apply clamping force to the test tube synchronously and evenly, avoiding damage to the test tube due to uneven force and local stress. The always-in-contact fixing blocks can tightly fit the test tube.

[0009] Furthermore, a limiting ring is installed on the inner wall of the drive ring, and a limiting groove is formed on the side of the first adjusting plate. The limiting ring slides in the limiting groove, and the contact surfaces of the limiting ring and the limiting groove are covered with anti-slip sleeves. The cooperation between the limiting ring and the limiting groove ensures the stable rotation of the drive ring and avoids the drive ring from shifting during the adjustment process, which would affect the adjustment accuracy of the fixing block. The anti-slip sleeve can fix the position of the drive ring and prevent the drive ring from rotating unexpectedly after clamping the test tube, which would cause the clamping to loosen and ensure the stability of the experimental process.

[0010] Furthermore, the first adjustment plate, the second adjustment plate, and the drive ring are all coaxially arranged to avoid the adjustment of the fixing block due to misalignment, ensuring that the fixing block always converges or disperses around the center of the test tube, thereby improving clamping accuracy; at the same time, it reduces misalignment friction between components and extends the service life of the equipment.

[0011] Furthermore, the bottom surface of the drive ring and the top surface of the first adjusting plate are spaced 0.5 cm to 1 cm apart to reduce frictional loss when the drive ring rotates, making the adjustment operation easier; to avoid wear on the surface of the components due to friction, extend the service life of the drive ring and the first adjusting plate, and ensure long-term stable operation of the equipment.

[0012] Furthermore, the fixing block is a rubber plate. The elasticity of the rubber material can buffer the clamping force and prevent the test tube from breaking due to rigid clamping. The high friction of the rubber material can also improve the stability of the test tube clamping. Even if the test tube expands or contracts slightly due to changes in water temperature during the water bath, the fixing block can still hold the test tube stably.

[0013] Furthermore, a plurality of support platforms are installed on the top surface of the base plate, and the top surface of each support platform has a groove. A rubber pad is fitted into the groove. The number of the support platforms and the fixing grooves are equal, and the support platforms and fixing grooves correspond one-to-one and are located directly below the fixing grooves. The one-to-one correspondence between the support platforms and the fixing grooves provides stable support for the bottom of the test tube, preventing the test tube from tipping over due to its high center of gravity. The rubber pads in the grooves protect the bottom of the test tube, preventing damage caused by hard contact between the test tube and the support platform, while also improving the stability of the test tube.

[0014] Furthermore, a positioning groove is provided on the bottom surface of the water bath heating chamber, and a positioning block is installed on the bottom surface of the base plate. The positioning block is located in the positioning groove. The cooperation between the positioning block and the positioning groove facilitates the quick assembly and disassembly of the fixing frame and precise positioning, ensuring that the support platform and the fixing groove are always vertically aligned. At the same time, it prevents the fixing frame from shifting due to water flow impact or equipment vibration during the water bath heating process, thereby improving the overall structural stability.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This constant temperature water bath provides a stable clamping force from the top of the test tube through an adjustable clamping mechanism, limiting the horizontal swaying and tipping tendency of the test tube; on the other hand, a support platform corresponding to the fixing groove is installed on the top surface of the bottom plate, and a rubber pad is attached to the groove on the top surface of the support platform. The bottom of the test tube can be inserted into the groove, thereby providing support for the bottom of the test tube, which increases the contact area between the test tube and the device and lowers the center of gravity of the test tube. Even for long test tubes with a high center of gravity, the bottom support platform can provide a stable support force to offset the risk of tipping. In addition, the limiting ring on the inner wall of the drive ring cooperates with the limiting groove on the side of the first adjusting plate, and the contact surface is covered with an anti-slip sleeve, which can prevent the drive ring from rotating on its own when not in operation, thus preventing the clamping from loosening, further ensuring the stability of the test tube clamping, and fundamentally solving the problem of easy tipping of test tubes in traditional constant temperature water baths. Attached Figure Description

[0016] Figure 1 This is a first three-dimensional structural schematic diagram of the constant temperature water bath disclosed in the embodiment of this utility model;

[0017] Figure 2 This is a second three-dimensional structural schematic diagram of the constant temperature water bath disclosed in the embodiment of this utility model;

[0018] Figure 3 This is a third three-dimensional structural diagram of the constant temperature water bath disclosed in the embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the first exploded structure of the constant temperature water bath disclosed in this embodiment of the utility model;

[0020] Figure 5 This is a schematic diagram of the second explosion structure of the constant temperature water bath disclosed in the embodiment of this utility model.

[0021] In the diagram: 1. Constant temperature water bath; 2. Water bath heating chamber; 3. Top plate; 4. Positioning groove; 5. Bottom plate; 6. Upright; 7. Positioning block; 8. Connecting block; 9. Handle; 10. First adjusting plate; 11. First through hole; 12. Support platform; 13. Fixing groove; 14. Groove; 15. Drive ring; 16. First drive groove; 17. Limiting groove; 18. Limiting ring; 19. Second adjusting plate; 20. Second drive groove; 21. Second through hole; 22. Fixing block; 23. Second drive block; 24. First drive block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 - Figure 5This utility model provides a technical solution: a constant temperature water bath, including a constant temperature water bath 1, the constant temperature water bath 1 having a water bath heating chamber 2, a fixing frame provided in the water bath heating chamber 2, the fixing frame including a bottom plate 5 and a top plate 3, four uprights 6 connected between the bottom plate 5 and the top plate 3, a plurality of fixing grooves 13 opened on the top surface of the top plate 3, a first adjusting plate 10 fixedly installed in the fixing grooves 13, a driving ring 15 rotatably connected to the outer side of the first adjusting plate 10, and the driving ring 15 being located above the top plate 3, a second adjusting plate 19 fixedly installed in the driving ring 15, a first driving groove 16 opened on the top surface of the first adjusting plate 10, a plurality of second driving grooves 20 opened on the top surface of the second adjusting plate 19, a plurality of fixing blocks 22 provided between the first adjusting plate 10 and the second adjusting plate 19, and the bottom surface of the fixing blocks 22 being installed in the first driving grooves The first driving block 24 slides within the first driving groove 16 of the first adjustment plate 16. The top surface of the fixed block 22 is equipped with a second driving block 23 that slides within the second driving groove 20. The first adjustment plate 10 and the second adjustment plate 19 are respectively provided with a first through hole 11 and a second through hole 21 at their centers. The test tube to be heated is passed through the second through hole 21 of the second adjustment plate 19 and the first through hole 11 of the first adjustment plate 10 in sequence. The driving ring 15 is rotated, and the driving ring 15 drives the second adjustment plate 19 to rotate synchronously. The second driving groove 20 on the second adjustment plate 19, through cooperation with the second driving block 23 on the top surface of the fixed block 22, pushes the fixed block 22 to move. At the same time, the first driving block 24 on the bottom surface of the fixed block 22 slides within the first driving groove 16 of the first adjustment plate 10, restricting the movement direction of the fixed block 22, so that several fixed blocks 22 converge towards the center synchronously, thereby clamping the test tube.

[0024] Specifically, the constant temperature water bath 1 is equipped with a top cover. When using it, the top cover of the constant temperature water bath 1 needs to be opened, and an appropriate amount of clean water or the heat-conducting medium required for the experiment needs to be injected into the water bath heating chamber 2. The amount injected must meet the following requirements: after the test tube is fixed, the liquid level of the reagent to be heated in the test tube is lower than the liquid level of the heat-conducting medium in the water bath heating chamber 2, and the liquid level of the heat-conducting medium does not exceed 2 / 3 of the total height of the water bath heating chamber 2 to prevent the medium from overflowing during heating. The target heating temperature and heating time can be set through the control panel of the constant temperature water bath 1. The temperature controller on the control panel monitors the temperature of the heat transfer medium in the water bath heating chamber 2 in real time and feeds the temperature data back to the control system. Pressing the power switch and heating switch on the control panel starts the heating element in the constant temperature water bath 1, heating the heat transfer medium in the water bath heating chamber 2. During heating, the temperature controller continuously monitors the temperature. When the heat transfer medium temperature reaches the set target temperature, the control system automatically adjusts the power of the heating element to maintain the temperature within the error range of the target temperature, achieving constant temperature control. During constant temperature heating, the experimenter can view the status of the reagents in the test tubes in real time and pay attention to the temperature display on the control panel to ensure stable heating temperature. If heating parameters need to be adjusted, the target temperature or heating time can be modified at any time through the control panel. When the heating time reaches the set time or the experiment is completed, first press the heating switch on the control panel to turn off the heating element, and then press the power switch to cut off the power to the equipment. After the temperature of the heat-conducting medium in the water bath heating chamber 2 drops to room temperature, rotate the drive ring 15 counterclockwise to disperse the fixing block 22 to the outside, loosen the clamp on the test tube, then hold the top of the test tube and take it out from the first through hole 11 and the second through hole 21 to complete the entire constant temperature water bath heating operation. Finally, open the valve body to discharge the heat-conducting medium.

[0025] Specifically, anti-slip textures can be provided on the outer circumferential surface of the drive ring 15. These textures can be vertical or diagonal stripes, with a depth of 0.5–1 mm and a width of 1–2 mm. This increases the friction between the operator's hand and the drive ring 15 when rotating the adjusting block 22, allowing for easy and accurate rotation of the drive ring 15 even with wet hands or while wearing gloves, thus improving operational convenience.

[0026] As an embodiment of this utility model, the top view of the first driving groove 16 is a regular hexagon, and the first through hole 11 is located at the center of the first driving groove 16. Several second driving grooves 20 and fixing blocks 22 are each arranged in six groups, with the six groups of second driving grooves 20 evenly distributed circumferentially outside the second through hole 21. The top view of the fixing blocks 22 is an isosceles triangle, and the six groups of fixing blocks 22 are always in contact. The regular hexagonal first driving groove 16 provides a uniform sliding path for the first driving blocks 24 of the six groups of fixing blocks 22. The six groups of second driving grooves 20 are evenly distributed circumferentially, ensuring that the driving force on each group of fixing blocks 22 is consistent when the second adjusting disc 19 is rotated. The isosceles triangular fixing blocks 22 are always in contact during movement, forming a circular clamping space that fits tightly against the outer wall of the test tube.

[0027] As an embodiment of this utility model, a limiting ring 18 is installed on the inner wall of the drive ring 15, and a limiting groove 17 is opened on the side of the first adjusting plate 10. The limiting ring 18 slides in the limiting groove 17, and the contact surfaces of the limiting ring 18 and the limiting groove 17 are covered with anti-slip sleeves. When the drive ring 15 is rotated, the limiting ring 18 on the inner wall of the drive ring 15 slides in the limiting groove 17 on the side of the first adjusting plate 10. The limiting groove 17 restricts the axial movement of the limiting ring 18 and prevents the drive ring 15 from moving up and down. The anti-slip sleeves on the contact surfaces increase the frictional resistance and prevent the drive ring 15 from rotating on its own when not in operation.

[0028] As an embodiment of this utility model, the first adjusting disk 10, the second adjusting disk 19, and the drive ring 15 are all coaxially arranged. When the drive ring 15 drives the second adjusting disk 19 to rotate, the rotation center of the second adjusting disk 19 coincides with the center of the first adjusting disk 10, ensuring that the driving force of the second driving groove 20 on the fixed block 22 is evenly applied around the same center.

[0029] As an embodiment of this utility model, the bottom surface of the drive ring 15 and the top surface of the first adjusting plate 10 are further spaced by 0.5 cm to 1 cm, which provides sufficient space for the rotation of the drive ring 15, avoids direct contact between the bottom surface of the drive ring 15 and the top surface of the first adjusting plate 10 to generate friction, and reduces rotational resistance.

[0030] As an embodiment of this utility model, the fixing block 22 is further made of rubber plate. The rubber material has a certain elasticity and friction. When the fixing block 22 clamps the test tube, the rubber plate can deform slightly and fit against the outer wall of the test tube, increasing the contact area with the test tube. At the same time, the high friction characteristics of rubber prevent the test tube from sliding in the clamping state.

[0031] As an embodiment of this utility model, further, a plurality of support platforms 12 are installed on the top surface of the base plate 5, and a groove 14 is opened on the top surface of the support platform 12. A rubber pad is attached to the groove 14. The number of support platforms 12 and fixing grooves 13 are equal, and the support platforms 12 and fixing grooves 13 correspond one-to-one and are located directly below the fixing grooves 13. After the test tube passes through the adjustment plate structure in the fixing groove 13, the bottom is inserted into the groove 14 on the top surface of the base plate 5 corresponding to the support platform 12. The groove 14 positions the bottom of the test tube. The rubber pad increases the friction between the bottom of the test tube and the groove 14, and at the same time buffers the impact force when the test tube is placed.

[0032] Specifically, the top surface of the base plate 5 has threaded holes 25 corresponding to the support platform 12, and the bottom surface of the support platform 12 is slidably connected with an external threaded post 26. The external threaded post 26 is threadedly engaged with the threaded hole 25, realizing the detachable fixing of the support platform 12 and the base plate 5. When it is necessary to adapt to test tubes of different lengths, simply rotate the support platform 12 clockwise or counterclockwise to unscrew the external threaded post 26 from the threaded hole 25, and the original support platform 12 can be removed; then select a support platform 12 of the corresponding height, align the external threaded post 26 on its bottom surface with the threaded hole 25 on the base plate 5 and screw it in until the bottom surface of the support platform 12 is tightly fitted with the top surface of the base plate 5, thus completing the replacement of the support platform 12.

[0033] As an embodiment of this utility model, the bottom surface of the water bath heating chamber 2 is provided with a positioning groove 4, and the bottom surface of the base plate 5 is provided with a positioning block 7. The positioning block 7 is located in the positioning groove 4. When installing the fixing frame, the positioning block 7 on the bottom surface of the base plate 5 is aligned with the positioning groove 4 on the bottom surface of the water bath heating chamber 2, so that the positioning block 7 is embedded in the positioning groove 4, thereby realizing the quick positioning and installation of the fixing frame in the water bath heating chamber 2.

[0034] Specifically, a pair of connecting blocks 8 can be installed on both sides of the top plate 3, and a handle 9 is rotatably connected between the pair of connecting blocks 8 to facilitate the user to remove the fixing frame.

[0035] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a control cabinet. The control circuit can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

Claims

1. A constant temperature water bath, characterized in that, The system includes a constant temperature water bath (1), which has a water bath heating chamber (2). A fixing frame is provided inside the water bath heating chamber (2). The fixing frame includes a bottom plate (5) and a top plate (3). Four uprights (6) are connected between the bottom plate (5) and the top plate (3). Several fixing grooves (13) are opened on the top surface of the top plate (3). A first adjusting plate (10) is fixedly installed in each fixing groove (13). A driving ring (15) is rotatably connected to the outer side of the first adjusting plate (10), and the driving ring (15) is located above the top plate (3). A second adjusting plate (19) is fixedly installed inside the driving ring (15). The top surface of the first adjusting plate (10) is provided with a first driving groove (16), and the top surface of the second adjusting plate (19) is provided with a plurality of second driving grooves (20). A plurality of fixing blocks (22) are provided between the first adjusting plate (10) and the second adjusting plate (19). The bottom surface of the fixing block (22) is equipped with a first driving block (24) that slides in the first driving groove (16), and the top surface of the fixing block (22) is equipped with a second driving block (23) that slides in the second driving groove (20). The center of the first adjusting plate (10) and the second adjusting plate (19) are respectively provided with a first through hole (11) and a second through hole (21).

2. The constant temperature water bath according to claim 1, characterized in that, The top view of the first drive groove (16) is a regular hexagon, and the first through hole (11) is located at the center of the first drive groove (16). The second drive grooves (20) and the fixing blocks (22) are all set in six groups, and the six groups of second drive grooves (20) are evenly distributed around the outside of the second through hole (21). The top view of the fixing block (22) is an isosceles triangle, and the six groups of fixing blocks (22) are always in contact.

3. A constant temperature water bath according to claim 1, characterized in that, A limiting ring (18) is installed on the inner wall of the drive ring (15), and a limiting groove (17) is opened on the side of the first adjusting plate (10). The limiting ring (18) slides in the limiting groove (17), and the contact surfaces of the limiting ring (18) and the limiting groove (17) are covered with anti-slip sleeves.

4. A constant temperature water bath according to claim 1, characterized in that, The first adjustment disc (10), the second adjustment disc (19), and the drive ring (15) are all coaxially arranged.

5. A constant temperature water bath according to claim 1, characterized in that, The bottom surface of the drive ring (15) and the top surface of the first adjusting plate (10) are spaced 0.5 cm to 1 cm apart.

6. A constant temperature water bath according to claim 1, characterized in that, The fixing block (22) is a rubber plate.

7. A constant temperature water bath according to claim 1, characterized in that, The top surface of the base plate (5) is equipped with several support platforms (12), and the top surface of the support platform (12) is provided with a groove (14). A rubber pad is attached to the groove (14). The number of the support platforms (12) and the fixing groove (13) are equal, and the support platforms (12) and the fixing groove (13) correspond one-to-one and are located directly below the fixing groove (13).

8. A constant temperature water bath according to claim 1, characterized in that, The bottom surface of the water bath heating chamber (2) is provided with a positioning groove (4), and the bottom surface of the base plate (5) is provided with a positioning block (7), which is located in the positioning groove (4).

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