Anti-overflow device of constant-temperature oscillator
By designing an anti-overflow device with a shell and sealing ring in the constant temperature shaker, the problems of plastic wrap contacting the sample and water vapor condensation and backflow were solved, thus achieving the accuracy and reliability of experimental results and reducing the difficulty of operation and waste of consumables.
Patent Information
- Application Number
- CN202423207826.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-25
AI Technical Summary
In existing constant temperature oscillators, the contact between the plastic wrap and the sample solution during the experiment leads to measurement errors, and the condensation and reflux of water vapor affects the accuracy of the experimental results.
Design a thermostatic shaker anti-overflow device, including a housing and a sealing ring. The housing has an opening adapted to the test tube, and the sealing ring is in close contact with the outer wall of the test tube. The side wall of the housing has an exhaust hole and a drain hole to discharge water vapor and prevent condensation and backflow.
It effectively prevents sample spillage and water vapor backflow, improves the accuracy and reproducibility of measurement results, and reduces waste of experimental consumables.
Smart Images
Figure CN223625836U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of constant temperature oscillator technology, specifically to a constant temperature oscillator anti-overflow device. Background Technology
[0002] Thermostatic shakers are primarily designed based on temperature control technology and oscillation mechanisms. They employ advanced temperature sensors and control systems to monitor and adjust the internal temperature of the shaker in real time, ensuring that experimental samples remain in a constant temperature environment during experiments. Furthermore, driven by a motor, they can achieve sample oscillation to meet the needs of various experiments. With the development of experimental techniques, thermostatic shakers are increasingly used in experiments such as degradation experiments and simulated in vivo dissolution experiments.
[0003] Taking degradation experiments as an example, when using existing constant temperature shakers to perform long-term measurements with samples, after adding the sample to the test tube or test liquid container, in order to avoid sample overflow due to shaking during the experiment, the mouth of the test tube or test liquid container is usually wrapped and sealed with plastic wrap, and then the sealed mouth or test liquid container is placed in the water bath environment of the constant temperature shaker for the experiment.
[0004] While this method ensures that the sample will not spill, the plastic wrap can easily come into contact with the sample solution during the experiment. Different sample solutions may degrade, leading to measurement errors. Furthermore, water vapor generated in the test tube or solution container during the experiment may condense on the plastic wrap and flow back into the test tube along the test tube wall, causing measurement errors and affecting the experimental results. Utility Model Content
[0005] To address the problems existing in the prior art, a constant-temperature oscillator overflow prevention device is provided. The technical solution adopted by this utility model to solve its technical problem is as follows:
[0006] An anti-overflow device for a thermostatic oscillator, comprising:
[0007] The shell has an opening on its bottom wall that fits the test tube. The interior of the shell forms a cavity for accommodating the mouth of the test tube. The cavity is connected to the opening. There is a gap between the inner wall of the cavity and the mouth of the test tube. A sealing ring is fixedly connected to the inner wall of the opening along the circumferential direction. The sealing ring is in close contact with the outer wall of the test tube. Several vent holes are spaced apart on the side wall of the shell. The vent holes are connected to the cavity.
[0008] Preferably, the cross-section of the sealing ring includes circular and rectangular shapes.
[0009] Preferably, the surface of the sealing ring that contacts the outer wall of the test tube has an anti-slip pattern.
[0010] Preferably, the housing and the sealing ring are made of elastic rubber.
[0011] Preferably, a lifting head is fixedly connected to the end of the housing away from the opening.
[0012] Preferably, the inner diameter of the vent hole ranges from 0.03 to 0.07 cm.
[0013] Preferably, the number of vent holes includes 5-8.
[0014] Preferably, the cross-sectional shape of the receiving cavity includes a circle, the radius of the cross-section of the receiving cavity decreases from bottom to top, and the cross-sectional radius at the lower end of the receiving cavity is larger than the outer diameter of the test tube.
[0015] Preferably, a plurality of drainage holes are spaced apart on the bottom wall of the housing surrounding the opening.
[0016] Preferably, the inner diameter of the drain hole ranges from 0.03 to 0.07 cm.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. The shell of this utility model has an opening adapted to fit the test tube, and the inside of the shell forms a receiving cavity for accommodating the mouth end of the test tube. A sealing ring is fixedly connected to the inner wall of the opening along the circumferential direction. Several vent holes are spaced apart on the side wall of the shell. When performing sample measurement, the shell is placed over the mouth end of the test tube. At this time, the sealing ring is in close contact with the outer wall of the test tube. The shell and the sealing ring seal the mouth of the test tube, which can effectively avoid the influence of human or machine operation on the experimental results, reduce the difficulty of operation for experimental personnel, improve the reliability and reproducibility of sample measurement results, and during the experiment, water vapor is discharged through the vent holes to prevent it from condensing into water, avoiding liquid backflow caused by other reasons, greatly improving the accuracy of measurement results and reducing the waste of experimental consumables.
[0019] 2. The shell and sealing ring of this utility model are made of elastic rubber, which makes the size of the sealing ring and the opening variable, so as to adapt to test tubes and test liquid containers of different shapes and diameters, and has strong adaptability.
[0020] 3. In this invention, the radius of the cross-section of the containing cavity decreases from bottom to top. The radius of the cross-section at the lower end of the containing cavity is larger than the outer diameter of the test tube. Furthermore, several vent holes are spaced apart on the bottom wall of the shell around the opening. When water vapor condenses on the inner wall of the containing cavity, it can be collected along the side wall of the containing cavity to the bottom wall under the action of the shape of the containing cavity, and then flow out of the test tube through the vent holes. This avoids the liquid flowing back into the test tube, greatly improves the accuracy of the measurement results, and reduces the waste of experimental consumables. Attached Figure Description
[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0022] Figure 1 This is the main view of the overall structure of this utility model (initial state);
[0023] Figure 2 This is a bottom view (initial state) of the overall structure of this utility model;
[0024] Figure 3 This is a front view of the present invention connected to a test tube (in working condition);
[0025] Figure 4 This is a schematic diagram of the internal structure of this utility model (the sealing ring has a circular cross-section).
[0026] Figure 5 This is a schematic diagram of the internal structure of this utility model (the sealing ring has a rectangular cross-section).
[0027] Explanation of reference numerals in the attached figures:
[0028] 100 Housing; 101 Lifting head; 110 Opening; 111 Sealing ring; 112 Drain hole; 113 Anti-slip pattern; 120 Receiving cavity; 121 Exhaust hole; 200 Test tube. Detailed Implementation
[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0030] like Figures 1 to 3 As shown, this utility model proposes an anti-overflow device for a constant temperature oscillator, which includes:
[0031] The shell 100 has an opening 110 on its bottom wall that is adapted to the test tube 200. The shell 100 has a cavity 120 inside for accommodating the end of the test tube 200. The cavity 120 is connected to the opening 110. There is a gap between the inner wall of the cavity 120 and the end of the test tube 200. A sealing ring 111 is fixedly connected to the inner wall of the opening 110 along the circumferential direction. The sealing ring 111 is in close contact with the outer wall of the test tube 200. Several vent holes 121 are spaced apart on the side wall of the shell 100. The vent holes 121 are connected to the cavity 120.
[0032] Initially, the shell 100 and the test tube 200 are separate.
[0033] When using a thermostatic shaker in experiments, this invention is designed to be used in conjunction with test tubes and other test liquid containers. The thermostatic shaker is designed based on temperature control technology and an oscillation mechanism. It employs an advanced temperature sensor and control system to monitor and adjust the internal temperature of the shaker in real time, ensuring that the experimental sample remains in a set constant temperature environment. Furthermore, driven by a motor, it enables sample oscillation to meet the needs of various experiments. With the development of experimental techniques, thermostatic shakers are increasingly used in experiments such as degradation experiments and simulated in vivo dissolution experiments.
[0034] When using an intelligent constant temperature shaker for long-term water bath experiments, place this device over the opening of the test tube or liquid container containing the sample. This device provides a certain degree of isolation, making the sample more stable in the water bath temperature and avoiding problems such as water vapor backflow and liquid overflow that could cause experimental data to deviate from the actual value or have poor reproducibility.
[0035] The following section describes the use of this device, taking the example of using an intelligent constant-temperature shaker to conduct dissolution or forced degradation experiments:
[0036] Before the experiment, start the intelligent constant temperature oscillator to stabilize the water bath temperature to the measurement temperature. The experimental temperature is generally set in the range of 70-80℃.
[0037] During the experiment, the sample solution to be tested is added to test tube 200. Test tube 200 with the sample solution is placed at the track of the intelligent constant temperature shaker. When the temperature of the sample solution in test tube 200 is the same as the water bath temperature, the mouth of test tube 200 is inserted into the receiving cavity 120 through opening 110, so that the sealing ring 111 is in close contact with the outer wall of test tube 200. Then, the distance of test tube 200 inserted into receiving cavity 120 is adjusted so that there is a certain gap between the inner wall of receiving cavity 120 and the mouth of test tube 200, that is, the mouth of test tube 200 is higher than the bottom wall of receiving cavity 120, and the edge of the mouth of test tube 200 does not contact the side wall of receiving cavity 120. After the adjustment is completed, the shaking function of intelligent constant temperature shaker is turned on to carry out the experiment.
[0038] It should be noted that during the experiment, the water level in the intelligent constant temperature shaker should not exceed 80% of the top of the test tube 200, nor should it exceed the connection between the test tube 200 and the opening 110, even if the connection between the test tube 200 and the opening 110 is above the water bath surface.
[0039] During the experiment, the test tube 200 was oscillated in a water bath environment under the action of a constant temperature oscillator. The water vapor generated in the test tube 200 during the experiment was discharged through the exhaust port 121 and did not condense into water droplets and flow back into the test tube 200. This made the sample more stable in the water bath temperature, increased the measurement accuracy, and ensured the accuracy of the experimental results.
[0040] Meanwhile, the process of venting water vapor through the vent 121 also serves to relieve pressure on the test tube 200. Combined with the sealing ring 111 maintaining close contact with the outer wall of the test tube 200, this effectively prevents the shell 100 from expanding due to excessive temperature or pressure and detaching from the test tube 200. This ensures that the test tube 200 remains firmly attached to its top during oscillation, avoiding errors caused by human or machine misoperation, reducing the difficulty of operation for researchers, improving the reliability and reproducibility of sample measurement results, and reducing waste of experimental consumables.
[0041] After the experiment is completed, remove test tube 200 from the track layout of the intelligent constant temperature oscillator and remove shell 100, then other experimental operations can be performed to obtain experimental results.
[0042] like Figures 1 to 5 As shown in one embodiment of the anti-overflow device for a constant temperature oscillator according to this utility model,
[0043] The cross-section of the sealing ring 111 includes both circular and rectangular shapes.
[0044] The surface of the sealing ring 111 that contacts the outer wall of the test tube 200 has anti-slip patterns 113.
[0045] The housing 100 and the sealing ring 111 are made of elastic rubber.
[0046] In this embodiment, the shell 100 and the sealing ring 111 are made of elastic rubber, which makes the size of the sealing ring 111 and the opening 110 variable, adaptable to test tubes 200 and test liquid containers of different shapes and diameters, with strong adaptability.
[0047] In addition, the sealing ring 111 has a circular or rectangular cross-section. On the one hand, it has a large contact area with the shell 100 and the side wall of the test tube 200. Furthermore, by opening anti-slip patterns 113 on the surface of the sealing ring 111 that contacts the outer wall of the test tube 200, the connection between the sealing ring 111 and the outer wall of the test tube 200 can be made stronger and the sealing effect can be better. On the other hand, this kind of circular or rectangular cross-section sealing ring 111 is more common in the market, with more complete models and lower procurement costs.
[0048] It should be noted that the sealing ring 111 and the housing 100 can be integrally molded or bonded to the housing 100 by applying adhesive. In addition, setting anti-slip patterns 113 is also a common way to increase the friction between the contact surfaces. All of the above are existing technologies frequently used by those skilled in the art and can be easily obtained on the market. They will not be described in detail in this embodiment.
[0049] In addition, a lifting head 101 is fixedly connected to the end of the housing 100 away from the opening 110. The lifting head 101 is provided to facilitate the user to remove the device from the test tube 200. Of course, the lifting head 101 and the housing 100 can be integrally molded, or they can be bonded to the housing 100 by applying glue. Its shape and connection with the housing 100 are all existing technologies, and will not be described in detail in this embodiment.
[0050] The inner diameter of the vent 121 ranges from 0.03 to 0.07 cm, and the number of vent 121 ranges from 5 to 8. In this embodiment, the inner diameter of the vent 121 is 0.05 cm, and the number of vent 121 is 6. The size of the vent 121 is set to 0.05 cm, and the number of vent 121 is 6. On the one hand, this allows water vapor to pass smoothly through the vent 121 and avoids condensation. On the other hand, the size of the vent 121 is relatively small, so when external water splashes near the vent 121, the water on the vent 121 can generate sufficient surface tension to prevent external water from entering the test tube 200 through the vent 121. The principle is similar to the waterproof effect of the small pores in an umbrella tarpaulin, thereby ensuring the accuracy of the experimental results.
[0051] The cross-sectional shape of the receiving cavity 120 includes a circle, and the radius of the cross-section of the receiving cavity 120 decreases from bottom to top. The cross-sectional radius of the lower end of the receiving cavity 120 is larger than the outer diameter of the test tube 200.
[0052] A plurality of drain holes 112 are spaced apart on the bottom wall of the housing 100 surrounding the opening 110, and the inner diameter of the drain holes 112 ranges from 0.05 to 0.09 cm.
[0053] In this embodiment, the inner diameter of the drain hole 112 is 0.07 cm. The drain holes 112 are arranged in a ring around the opening 110. The radius of the cross-section of the receiving cavity 120 decreases from bottom to top, and the radius of the cross-section at the lower end of the receiving cavity 120 is larger than the outer diameter of the test tube 200. When water vapor condenses on the inner wall of the receiving cavity 120 during the water bath, it can be collected along the side wall of the receiving cavity 120 to the bottom wall due to the shape of the receiving cavity 120. Then, under the influence of the weight of the water droplet itself and the pressure difference between the inside and outside of the receiving cavity 120, the water droplet flows out of the test tube 200 through the drain hole 112, avoiding the backflow of liquid into the test tube 200, greatly improving the accuracy of the measurement results and reducing the waste of experimental consumables.
[0054] During the experiment, the test tube 200 was oscillated in a water bath environment under the action of a constant temperature shaker, and the water vapor generated in the test tube 200 during the experiment was discharged through the exhaust port 121.
[0055] When water vapor condenses on the inner wall of the containment cavity 120, it can be drawn along the side wall of the containment cavity 120 to the bottom wall due to the shape of the containment cavity 120. Then, under the influence of the weight of the water droplet itself and the pressure difference between the inside and outside of the containment cavity 120, the water droplet flows out of the test tube 200 through the drain hole 112, thereby making the sample more stable in the water bath temperature, increasing the measurement accuracy, and ensuring the accuracy of the experimental results.
[0056] After the experiment is completed, remove the test tube 200 from the track of the intelligent constant temperature oscillator, and pull the lifting head 101 upward to remove the device from the test tube 200. After removing the shell 100, other experimental operations can be performed to obtain experimental results.
[0057] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A device for preventing overflow in a constant-temperature oscillator, characterized in that, It includes: The shell (100) has an opening (110) on its bottom wall that is adapted to the test tube (200). The shell (100) has a cavity (120) inside for accommodating the end of the test tube (200). The cavity (120) is connected to the opening (110). There is a gap between the inner wall of the cavity (120) and the end of the test tube (200). A sealing ring (111) is fixedly connected to the inner wall of the opening (110) along the circumferential direction. The sealing ring (111) is in close contact with the outer wall of the test tube (200). A plurality of vent holes (121) are spaced apart on the side wall of the shell (100). The vent holes (121) are connected to the cavity (120).
2. The anti-overflow device for a constant-temperature oscillator according to claim 1, characterized in that, The cross-section of the sealing ring (111) includes both circular and rectangular shapes.
3. The anti-overflow device for a constant-temperature oscillator according to claim 2, characterized in that, The sealing ring (111) has anti-slip patterns (113) on the surface that contacts the outer wall of the test tube (200).
4. The anti-overflow device for a constant-temperature oscillator according to claim 3, characterized in that, The housing (100) and the sealing ring (111) are made of elastic rubber.
5. The anti-overflow device for a constant-temperature oscillator according to claim 1, characterized in that, A lifting head (101) is fixedly connected to one end of the housing (100) away from the opening (110).
6. The anti-overflow device for a constant-temperature oscillator according to claim 1, characterized in that, The inner diameter of the vent (121) ranges from 0.03 to 0.07 cm.
7. The anti-overflow device for a constant-temperature oscillator according to claim 6, characterized in that, The number of exhaust ports (121) includes 5-8.
8. The anti-overflow device for a constant-temperature oscillator according to claim 1, characterized in that, The cross-sectional shape of the receiving cavity (120) includes a circle, and the radius of the cross-section of the receiving cavity (120) decreases from bottom to top. The cross-sectional radius of the lower end of the receiving cavity (120) is greater than the outer diameter of the test tube (200).
9. The anti-overflow device for a constant-temperature oscillator according to claim 1, characterized in that, A plurality of drainage holes (112) are spaced apart on the bottom wall of the housing (100) surrounding the opening (110).
10. The anti-overflow device for a constant-temperature oscillator according to claim 9, characterized in that, The inner diameter of the drain hole (112) ranges from 0.05 to 0.09 cm.