Portable test tube liquid high-efficiency mixing device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHENGDU METROLOGY TESTING INST
- Filing Date
- 2026-04-27
- Publication Date
- 2026-06-26
Smart Images
Figure CN122273370A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of mixing equipment technology, specifically a portable test tube liquid high-efficiency mixing device. Background Technology
[0002] In laboratory testing, medical clinical testing, field sampling, and emergency rapid testing, the mixing of liquids in test tubes is a key pretreatment step to ensure accurate test results and stable and reliable experiments. It is widely used in blood sample mixing, reagent preparation, cell suspension preparation, and viscous liquid dissolution.
[0003] Currently, commonly used mixing methods are mainly divided into two categories: manual mixing and instrumental mixing. Manual mixing relies on hand-held shaking, inversion, or agitation, which suffers from low mixing efficiency, poor consistency of force and frequency, fatigue from prolonged operation, and sample splashing or foaming, making it difficult to meet the requirements of standardized, batch operations. However, a Chinese utility model patent (CN214917114U) discloses a portable mixing centrifuge suitable for multi-sized test tubes. It achieves efficient automatic mixing of multi-sized test tubes through adjustable tube clamps combined with a tube plate and fixing rod. While the adjustable tube clamps enable automatic mixing of multi-sized test tubes, the device is large and heavy, and requires an external AC power source, making it unsuitable for use in scenarios without a fixed power source or mobile operation, such as field sampling, emergency room bedside, or outdoor testing. Furthermore, Chinese utility model patent CN106769368A discloses a portable electronic mixer for anticoagulated venous blood samples. It uses a motor to drive a tube holder with clamping holes of different diameters and a sponge anti-breakage layer, and a delay potentiometer to adjust the rotation speed and time, achieving efficient automatic mixing of anticoagulated venous blood samples. Although it uses battery power and an adjustable-speed motor, it only supports unidirectional rotation, has a limited mixing mode, and is suitable for a limited range of samples. Additionally, the clamping holes require manual adjustment, making operation cumbersome and inconvenient.
[0004] Therefore, this application provides a portable test tube liquid high-efficiency mixing device to solve the above problems. Summary of the Invention
[0005] This application provides a portable test tube liquid high-efficiency mixing device, which aims to solve the problems of existing mixing devices mentioned in the background art, such as poor portability, reliance on external power supply, cumbersome test tube adaptation and fixing operation, single mixing mode, insufficient ease of use, and inability to meet the high-efficiency and stable mixing needs of multi-specification test tubes and multi-type liquids in mobile scenarios.
[0006] To achieve the above objectives, this application provides the following technical solution: a portable test tube liquid high-efficiency mixing device, including a hollow cylindrical shell for handheld use; The clamping structure includes a connecting sleeve disposed at the top opening of the hollow cylindrical shell, an elastic clamping part disposed within the connecting sleeve for elastically holding the test tube, and a limiting component disposed within the hollow cylindrical shell for limiting the insertion depth of the test tube. An eccentric drive structure includes a brushless DC motor disposed inside the hollow cylindrical shell at a position corresponding to the position below the limiting component, a fan-shaped eccentric wheel fixedly connected to the output shaft of the brushless DC motor for rotating to generate periodic centrifugal force to form vibration, and a vibration damping and noise reduction component disposed between the hollow cylindrical shell and the brushless DC motor for vibration damping and noise reduction. The power supply structure includes a lithium battery fixedly disposed inside the hollow cylindrical shell at a position corresponding to the lower part of the brushless DC motor for overall power supply, and a Type-C charging interface fixedly disposed at the bottom of the hollow cylindrical shell for charging the lithium battery. The use of a hollow cylindrical shell achieves lightweight, handheld compatibility, solving the problems of large size and poor portability of traditional devices. Simultaneously, the connecting sleeve, elastic clamping part, and limiting component in the clamping structure work together to adaptively clamp test tubes of different diameters and limit the insertion depth through elastic deformation, achieving plug-and-play functionality and solving the problems of cumbersome clamping and compatibility in existing technologies. In addition to addressing the shortcomings of poor performance, the brushless DC motor in the eccentric drive structure drives the fan-shaped eccentric wheel to rotate, generating periodic centrifugal force to form high-frequency vibration. Combined with the vibration damping and noise reduction components, it selectively absorbs harmful radial vibration and reduces noise, achieving dual-mode mixing of high-frequency vibration and low-speed circumferential mixing. It is suitable for viscous or easily foaming liquids, solving the problems of single mixing mode, hand discomfort, and high noise. The power supply structure provides offline power supply from the lithium battery and convenient charging via the Type-C charging interface, eliminating dependence on external power sources. It can meet the needs of mobile scenarios such as field sampling and bedside testing, improving the convenience and reliability of liquid mixing in multiple scenarios.
[0007] Preferably, in order to facilitate the assembly and disassembly of the connecting sleeve and the hollow cylindrical shell, the top opening of the hollow cylindrical shell is provided with an external thread, and the inner wall of the end of the connecting sleeve near the hollow cylindrical shell is provided with an internal thread for matching the external thread; through the threaded engagement of the external and internal threads, the assembly and disassembly of the connecting sleeve and the hollow cylindrical shell and their coaxial and stable assembly are realized, ensuring the stable transmission of vibration power, while also facilitating the quick replacement of silicone rings of different specifications, expanding the device's adaptability to various types of test tubes.
[0008] Preferably, to achieve adaptive clamping of test tubes of different diameters, the elastic clamping part includes a silicone ring coaxially arranged with the connecting sleeve and located inside the connecting sleeve, and an elastic element arranged in a ring on the outside of the silicone ring. The two ends of the elastic element are fixedly connected to the outside of the silicone ring and the inner wall of the connecting sleeve, respectively. By providing a uniform radial elastic force in the circumferential direction through the elastic element, the silicone ring is able to adapt to the elastic deformation of the outer diameter of the test tube, thereby completing the automatic centering and tight clamping of test tubes of different diameters. There is no need for manual adjustment of the locking structure, and the test tubes can be quickly installed and fixed.
[0009] Preferably, in order to provide radial elastic clamping force and subsequent vibration force, the elastic element is an elastic sheet or a vibration spring; through the stable elastic rebound and deformation characteristics of the elastic sheet or vibration spring itself, a long-term stable radial clamping force output is achieved, while the flexible transmission of vibration force is realized, ensuring that the clamping structure moves synchronously and smoothly with the vibration mechanism.
[0010] Preferably, in order to limit the insertion depth of the test tube and align the center of gravity of the test tube with the vibration center of the eccentric drive structure, the limiting component includes a limiting ring disposed inside the hollow cylindrical shell and located between the silicone ring and the brushless DC motor to support the bottom of the test tube, and an adjustment component disposed on the hollow cylindrical shell to drive the limiting ring to move axially and lock it. The axial displacement adjustment and locking of the limiting ring are achieved by the adjustment component. By using the limiting ring to support and limit the bottom of the test tube, the insertion depth of test tubes of different lengths is limited, so that the center of gravity of various test tubes is uniformly aligned with the vibration center, avoiding the hidden dangers of test tube eccentric shaking and liquid splashing, and realizing the safe and stable operation of the mixing operation.
[0011] Preferably, to achieve the adjustment and locking of the limiting ring, the adjustment assembly includes through slots respectively opened on the hollow cylindrical shell at positions corresponding to both sides of the limiting ring, a guide rail fixedly connected in the through slots, a sliding sleeve slidably sleeved on the guide rail and fixedly connected to the side of the limiting ring, an annular sleeve sleeved on the outside of the hollow cylindrical shell and fixedly connected to the side of the two sliding sleeves away from the limiting ring, positioning holes respectively opened on both sides of the guide rail near the annular sleeve and linearly distributed, a fixed cylinder fixedly connected to the side of the sliding sleeve near the positioning hole, a telescopic rod transversely penetrating the fixed cylinder and slidably connected in the fixed cylinder, a return spring sleeved on the telescopic rod, and a positioning bead fixedly connected to the end of the telescopic rod away from the fixed cylinder for insertion into the positioning hole to achieve gear locking. The two ends of the return spring are fixedly connected to the telescopic rod and the inside of the fixed cylinder, respectively. By sliding the sliding sleeve along the guide rail in a straight line, the height of the limiting ring is continuously adjusted. Then, by driving the positioning bead with the return spring to engage the positioning hole, the gear is automatically locked after adjustment. The insertion depth can be flexibly limited according to the test tube specifications.
[0012] Preferably, in order to improve the friction of hand operation, the outer walls of the annular sleeve and the hollow cylindrical shell are provided with anti-slip textures for hand gripping; by increasing the external contact friction coefficient of the shell through the anti-slip textures, anti-slip limiting is achieved during the gripping and adjustment operation, avoiding hand slippage that could lead to operational errors or equipment slippage.
[0013] Preferably, in order to reduce vibration transmission and operating noise, the vibration damping and noise reduction assembly includes a base fixedly connected to the bottom of the brushless DC motor, an inner damping pad wrapped around the outside of the base, a hollow vibration damping bracket fixedly connected at both ends to the base and the inner wall of the hollow cylindrical shell respectively, and an outer damping pad filling the gap between the brushless DC motor and the hollow cylindrical shell. Multiple hollow vibration damping brackets are provided. The inner and outer damping pads buffer and offset the radial vibration of the motor, and the hollow vibration damping brackets cut off the rigid vibration transmission path, thereby realizing multi-level vibration damping and reducing the transmission of vibration to the handheld end and suppressing structural resonance noise.
[0014] Preferably, in order to further absorb operating noise, the inner wall of the hollow cylindrical shell is filled with sound-absorbing cotton; through the porous sound-absorbing structure of the sound-absorbing cotton laid on the inner wall of the hollow cylindrical shell, the sound waves of mechanical operation are absorbed and attenuated, and the noise is blocked from spreading outward, further optimizing the quiet operation effect of the equipment.
[0015] Preferably, to achieve brushless DC motor speed regulation, mode switching, power control, and operational status visualization, the high-efficiency mixing device further includes a control module, a speed control button for adjusting the brushless DC motor located on one side of the bottom of the hollow cylindrical shell, a mode button for mode switching, a power switch, and indicator lights. The brushless DC motor is connected to the output terminal of the control module, and the speed control button, mode button, and power switch are all connected to the input terminal of the control module. The indicator lights are electrically connected to the control module. By connecting the speed control button, mode button, and power switch to the input terminal of the control module, start / stop, speed adjustment, and mode switching commands can be input in real time. The control module regulates the speed and operating status of the brushless DC motor through its output terminal, and the indicator lights synchronously provide feedback on the device's operating information. It can flexibly switch between vibration and circular mixing modes to adapt to the needs of different liquid samples, improving the device's operational flexibility and practicality.
[0016] This portable test tube liquid high-efficiency mixing device achieves lightweight and handheld carrying by adopting a hollow cylindrical shell, solving the problems of large size and poor portability of traditional equipment; This portable test tube liquid high-efficiency mixing device works in concert with the connecting sleeve, elastic clamping part and limiting component in the clamping structure. It can adaptively clamp test tubes of different diameters and limit the insertion depth by using elastic deformation, so as to achieve plug and play and solve the defects of existing technology such as cumbersome clamping and poor adaptability. This portable test tube liquid high-efficiency mixing device uses a brushless DC motor in an eccentric drive structure to drive a fan-shaped eccentric wheel to rotate, generating periodic centrifugal force to form high-frequency vibration. Combined with a shock absorption and noise reduction component, it selectively absorbs harmful radial vibration and reduces noise, enabling high-frequency vibration and low-speed circumferential dual-mode mixing. It is suitable for viscous or foamy liquids and solves the problems of single mixing mode, hand discomfort and high noise. This portable test tube liquid high-efficiency mixing device is powered offline by a lithium battery in the power supply structure and can be conveniently charged by a Type-C charging interface, eliminating the dependence on external power sources. It can meet the needs of mobile scenarios such as field sampling and bedside testing, and improve the convenience and reliability of liquid mixing in multiple scenarios. This portable test tube liquid high-efficiency mixing device achieves the disassembly and assembly of the connecting sleeve and the hollow cylindrical shell through the threaded engagement of the external and internal threads, ensuring stable transmission of vibration power. It also facilitates the quick replacement of silicone rings of different specifications, expanding the device's adaptability to various types of test tubes. Attached Figure Description
[0017] Figure 1 A schematic diagram of the application structure of a portable test tube liquid high-efficiency mixing device; Figure 2 A schematic diagram of a portable test tube liquid high-efficiency mixing device with an elastic sheet as the elastic element; Figure 3 A schematic diagram of a portable test tube liquid high-efficiency mixing device with a vibrating spring as the elastic element. Figure 4 A cross-sectional schematic diagram of a portable test tube liquid high-efficiency mixing device; Figure 5 A partial structural diagram of the power supply structure in a portable test tube liquid high-efficiency mixing device; Figure 6 A schematic diagram of the exploded structure of the clamping structure in a portable test tube liquid high-efficiency mixing device. Figure 7 A schematic diagram of the limiting component in a portable test tube liquid high-efficiency mixing device; Figure 8 This is a schematic diagram of the fixed cylinder, telescopic rod, and return spring in a portable test tube liquid high-efficiency mixing device.
[0018] In the picture: 1. Hollow cylindrical shell; 11. External thread; 2. Clamping structure; 21. Connecting sleeve; 211. Internal thread; 22. Elastic clamping part; 221. Silicone ring sleeve; 222. Elastic element; 23. Limiting assembly; 231. Limiting ring; 232. Adjusting assembly; 2321. Through groove; 2322. Guide rail; 2323. Sliding sleeve; 2324. Ring sleeve; 2325. Positioning hole; 2326. Fixing cylinder; 2327. Telescopic rod; 2328. Return spring; 2329. Positioning bead; 3. Eccentric drive structure; 31. Brushless DC motor; 32. Fan-shaped eccentric wheel; 33. Vibration damping and noise reduction components; 331. Base; 332. Hollowed-out vibration damping bracket; 333. Outer damping pad; 4. Power supply structure; 41. Lithium battery; 42. Type-C charging port; 5. Speed adjustment button; 6. Mode button; 7. Power switch; 8. Anti-slip texture; 9. Indicator lights. Detailed Implementation
[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Example
[0020] This embodiment provides a portable, high-efficiency liquid mixing device for test tubes, such as... Figures 1-8 As shown, the portable test tube liquid high-efficiency mixing device includes a hollow cylindrical shell 1 for handheld use; a clamping structure 2, which includes a connecting sleeve 21 disposed at the top opening of the hollow cylindrical shell 1, an elastic clamping part 22 disposed within the connecting sleeve 21 for elastically holding the test tube, and a limiting component 23 disposed within the hollow cylindrical shell 1 for limiting the insertion depth of the test tube; and an eccentric drive structure 3, which includes a brushless DC motor 31 disposed within the hollow cylindrical shell 1 at a position corresponding to the position below the limiting component 23. The system includes a fan-shaped eccentric wheel 32 fixedly connected to the output shaft of the brushless DC motor 31 for generating periodic centrifugal force to form vibration, and a vibration damping and noise reduction component 33 disposed between the hollow cylindrical shell 1 and the brushless DC motor 31 for vibration damping and noise reduction; a power supply structure 4, which includes a lithium battery 41 fixedly disposed inside the hollow cylindrical shell 1 at a position corresponding to the lower part of the brushless DC motor 31 for overall power supply, and a Type-C charging interface 42 fixedly disposed at the bottom of the hollow cylindrical shell 1 for charging the lithium battery 41.
[0021] It should be noted that, in order to realize speed regulation, mode switching, power control, and visualization of the working status of the brushless DC motor 31, the high-efficiency mixing device also includes a control module, a speed control button 5 for adjusting the speed of the brushless DC motor 31 located on one side of the bottom of the hollow cylindrical shell 1, a mode button 6 for mode switching, a power switch 7, and an indicator light 9. The brushless DC motor 31 is connected to the output terminal of the control module, and the speed control button 5, mode button 6, and power switch 7 are all connected to the input terminal of the control module. The indicator light 9 is electrically connected to the control module. By connecting the speed control button 5, mode button 6, and power switch 7 to the input terminal of the control module, start / stop, speed adjustment, and mode switching commands can be input in real time. The control module regulates the speed and operating status of the brushless DC motor 31 through the output terminal, and the indicator light 9 synchronously feeds back the equipment's working information. It can flexibly switch between vibration and circular mixing modes to adapt to the needs of different liquid samples, improving the device's operational flexibility and practicality.
[0022] In use, the hollow cylindrical shell 1 serves as the main support and handheld base. First, press the power switch 7 to send a start input signal to the control module. Upon receiving the power-on command, the control module completes the circuit connection, and the indicator light 9 illuminates simultaneously to show the device's standby status. Then, the operator inserts the test tube to be mixed from top to bottom into the connecting sleeve 21 at the top of the clamping structure 2. The outer wall of the test tube contacts and presses against the elastic clamping part 22. The elastic clamping part 22 undergoes elastic deformation under pressure, using its own elastic recoil force to radially clamp and fix test tubes of different sizes. Simultaneously, the operator can adjust the limiting component 23 inside the hollow cylindrical shell 1 according to the actual length of the test tube. The limiting component 23 axially abuts and limits the bottom of the test tube, precisely controlling the insertion depth. To ensure the test tube's center of gravity is coaxially aligned with the vibration center of the eccentric drive structure 3, stable clamping and positioning of the test tube is achieved. After clamping, the operator presses the mode button 6 to send a mode switching command to the control module. The control module switches the device's operating type based on the received signal, selecting either high-frequency vibration mixing mode or low-speed circular mixing mode according to the mixing requirements. Simultaneously, the operator presses the speed adjustment button 5 to input speed adjustment parameters to the control module. After integrating all input control signals, the control module outputs a matching drive command to the brushless DC motor 31 through its output terminal, precisely controlling the operating speed and working logic of the brushless DC motor 31. When switching to high-frequency vibration mode, the control module controls the brushless DC motor 31 to maintain high-speed continuous operation, driving the brushless DC motor 31... The fan-shaped eccentric wheel 32 rotates at high speed in a circumferential direction. Due to its center of gravity deviating from the axis of rotation, the fan-shaped eccentric wheel 32 continuously generates a periodic centrifugal force with cyclical changes in direction. This centrifugal force is transmitted step-by-step to the hollow cylindrical shell 1, the clamping structure 2, and the clamped test tube, causing the entire test tube to produce small-amplitude, high-frequency radial reciprocating vibrations. This high-frequency oscillation breaks up viscous precipitates, achieving rapid mixing of viscous liquids and precipitated samples. When switching to a low-speed circumferential mixing mode, the control module regulates the brushless DC motor 31 to reduce its operating speed and maintain a stable, uniform rotation. The fan-shaped eccentric wheel 32 rotates synchronously at low speed and outputs a gentle circumferential centrifugal force. Simultaneously, the hand-held mechanism naturally tilts the entire structure. Under the gentle circumferential centrifugal force, the clamping structure 2 at the front end and the clamped test tube... The test tube makes a low-speed, small-amplitude circular oscillation motion centered on the axis of the brushless DC motor 31. This gentle circular motion effectively mixes easily foaming and emulsifying liquids, avoiding the generation of large amounts of bubbles that could affect the testing results from violent shaking. Throughout the operation of the brushless DC motor 31, the vibration damping and noise reduction component 33 installed between the hollow cylindrical shell 1 and the brushless DC motor 31 effectively buffers and absorbs the rigid vibrations and mechanical noise generated by the motor, preventing excessive vibrations from being transmitted to the outside of the hollow cylindrical shell 1. This reduces hand-held vibration and operating noise, ensuring operator comfort during extended use. Simultaneously, the entire device is provided with a stable and uninterrupted power output by the lithium battery 41 inside the power supply structure 4, providing a runtime of over 4 hours.It can meet the needs of independent offline use of the device, and when the lithium battery 41 is low on power, it can be recharged through the Type-C charging port 42 at the bottom of the hollow cylindrical shell 1.
[0023] Specifically, the elastic clamping part 22 includes a silicone ring 221 coaxially arranged with the connecting sleeve 21 and located inside the connecting sleeve 21, and an elastic member 222 arranged on the outside of the silicone ring 221 and distributed in a ring. The two ends of the elastic member 222 are fixedly connected to the outside of the silicone ring 221 and the inner wall of the connecting sleeve 21, respectively.
[0024] In order to provide radial elastic clamping force and subsequent vibration force, the elastic element 222 is an elastic sheet or a vibration spring. Through the stable elastic rebound and deformation characteristics of the elastic sheet or vibration spring itself, a long-term stable radial clamping force output is achieved, while the flexible transmission of vibration force is realized, ensuring that the clamping structure 2 moves synchronously and smoothly with the vibration mechanism.
[0025] When clamping a test tube is required, first insert the test tube to be mixed into the silicone ring 221 from top to bottom. The outer wall of the test tube will compress the silicone ring 221, causing it to elastically deform. Simultaneously, the silicone ring 221 will drive the elastic element 222 to deform synchronously. The elastic element 222 generates a counterforce through its own elastic restoring force, which acts on the outer wall of the test tube through the silicone ring 221, achieving a tight clamping of the test tube. Regardless of the test tube diameter, the elastic deformation of the elastic element 222 can adaptively adjust, ensuring that the silicone ring 221 fits tightly against the outer wall of the test tube. This achieves stable clamping of test tubes of different diameters without the need for manual adjustment of the clamping force. When the insertion depth of the test tube changes, the elastic deformation of the silicone ring 221 and the elastic element 222 will also adjust accordingly, always maintaining effective clamping of the test tube. Simultaneously, in conjunction with the limiting component 23, the test tube is kept in the centered position to prevent it from shifting, ensuring uniform vibration transmission and thus guaranteeing the stability and consistency of liquid mixing. The elastic element 222 can be an elastic sheet or a vibration spring. The elastic sheet, with its own elasticity and toughness, can continuously provide a stable clamping force, while the vibration spring can further enhance the stability and adaptability of the clamping through its own expansion and contraction. Both can achieve adaptive clamping of test tubes of different specifications, ensuring that the test tube does not loosen or shift during vibration mixing, providing a stable clamping foundation for subsequent liquid mixing operations, and also ensuring the stable operation of the entire device. This ensures that the elastic clamping part 22 can stably perform its clamping and fixing function, adapt to test tubes of different specifications, and meet diverse mixing needs.
[0026] Furthermore, the limiting component 23 includes a limiting ring 231 disposed within the hollow cylindrical shell 1 and located between the silicone ring 221 and the brushless DC motor 31 to support the bottom of the test tube, and an adjusting component 232 disposed on the hollow cylindrical shell 1 to drive the limiting ring 231 to move axially and lock it; in addition, the adjusting component 232 includes through slots 2321 respectively opened on the hollow cylindrical shell 1 at positions corresponding to both sides of the limiting ring 231, guide rails 2322 fixedly connected in the through slots 2321, sliding sleeves 2323 slidably sleeved on the guide rails 2322 and fixedly connected to the sides of the limiting ring 231, and sleeves 2323 sleeved on the outside of the hollow cylindrical shell 1 and away from the limiting ring 23 by the two sliding sleeves 2323. 1. A ring sleeve 2324 fixedly connected to one side; positioning holes 2325 linearly distributed on both sides of the guide rail 2322 near the ring sleeve 2324; a fixed cylinder 2326 fixedly connected to the side of the sliding sleeve 2323 near the positioning hole 2325; a telescopic rod 2327 transversely penetrating the fixed cylinder 2326 and slidably connected inside the fixed cylinder 2326; a return spring 2328 sleeved on the telescopic rod 2327; and a positioning bead 2329 fixedly connected to the end of the telescopic rod 2327 away from the fixed cylinder 2326 for insertion into the positioning hole 2325 to achieve gear locking. The two ends of the return spring 2328 are fixedly connected to the telescopic rod 2327 and the inside of the fixed cylinder 2326, respectively.
[0027] Before inserting the test tube into the silicone ring 221 to complete the clamping operation, the operator manually pushes and pulls the annular sleeve 2324 on the outside of the hollow cylindrical shell 1 according to the overall length specifications of the test tube. The annular sleeve 2324 synchronously drives the sliding sleeves 2323 fixed on both sides to slide axially in a straight line along the guide rail 2322 installed inside the through groove 2321. The side of the sliding sleeve 2323 is fixedly connected to the limiting ring 231. While the sliding sleeve 2323 slides, it directly drives the limiting ring 231 to move up and down synchronously, thereby adjusting the height position of the limiting ring 231 inside the hollow cylindrical shell 1. To accommodate the limiting requirements of test tubes of different lengths, during the sliding of the sliding sleeve 2323, the side wall of the guide rail 2322 will squeeze the positioning bead 2329, causing the positioning bead 2329 to retract under force and drive the telescopic rod 2327 to retract into the fixed cylinder 2326. Simultaneously, the return spring 2328 sleeved on the outside of the telescopic rod 2327 is compressed, allowing the return spring 2328 to store elastic potential energy. When the limiting ring 231 is adjusted to the target height and the sliding sleeve 2323 moves to the position corresponding to the positioning hole 2325 on the guide rail 2322, the external extrusion force disappears, and the compression state is restored. The return spring 2328 releases its potential energy through its own elastic rebound, pushing the telescopic rod 2327 to slide laterally outward within the fixed cylinder 2326. This, in turn, causes the positioning bead 2329 to precisely engage with the corresponding positioning hole 2325. The mechanical locking is achieved through the insertion and engagement of the positioning bead 2329 and the positioning hole 2325, firmly locking the adjustment position of the sliding sleeve 2323 and the limit ring 231, preventing the limit ring 231 from slipping or shifting during equipment vibration operation. If the limit height needs to be adjusted again, simply continue to apply force to push the annular sleeve 2324. Then, the positioning bead 2329 can be squeezed again to retract and disengage from the positioning hole 2325, releasing the gear lock and continuing to slide for adjustment. The positioning holes 2325 linearly arranged on the guide rail 2322 maintain a uniform spacing. Together with the scale markings on the outer wall of the hollow cylindrical shell 1, the limiting ring 231 can be precisely adjusted in multiple gears, so that the limiting ring 231 stably supports the bottom of the test tube, accurately controls the insertion depth of the test tube, and ensures that the center of gravity of various test tubes can be aligned with the vibration center of the eccentric drive structure 3, avoiding eccentric shaking of the test tube and ensuring that the subsequent mixing operation is carried out smoothly and orderly.
[0028] Furthermore, the vibration damping and noise reduction component 33 includes a base 331 fixedly connected to the bottom of the brushless DC motor 31, an inner damping pad wrapped around the outside of the base 331, a hollow vibration damping bracket 332 fixedly connected at both ends to the base 331 and the inner wall of the hollow cylindrical shell 1 respectively, and an outer damping pad 333 filling the gap between the brushless DC motor 31 and the hollow cylindrical shell 1. Multiple hollow vibration damping brackets 332 are provided, and the inner wall of the hollow cylindrical shell 1 is filled with sound insulation cotton.
[0029] When the brushless DC motor 31 generates centrifugal vibration and mechanical noise during operation, it is first positioned and installed by the base 331 fixedly connected to the bottom. The inner damping pad wrapped around the outside of the base 331 can preferentially fit and wrap the base 331, buffering the initial vibration generated by the operation of the brushless DC motor 31 and weakening the initial transmission of vibration to the external structure. Multiple hollow vibration damping brackets 332 are firmly connected at both ends to the base 331 and the inner wall of the hollow cylindrical shell 1, respectively. Utilizing their hollow, non-rigid structural characteristics, they cut off the rigid vibration transmission path, preventing the motor vibration force from being directly transmitted to the hollow cylindrical shell 1 through the rigid structure. At the same time, the outer damping pad 333 filling the gap between the brushless DC motor 31 and the hollow cylindrical shell 1 can fill the structural gap, further... The device absorbs residual radial vibration and mechanical vibration in one step, forming a double-layer damping buffer protection to reduce the overall resonance phenomenon of the equipment. The sound insulation cotton filled in the inner wall of the hollow cylindrical shell 1 can simultaneously absorb various noise waves generated by the operation of the brushless DC motor 31 and structural vibration, blocking the noise from spreading outward. Through the multi-level cooperation of the inner layer damping pad of the base 331, the hollow shock absorption bracket 332, the outer layer damping pad 333, and the sound insulation cotton, the vibration energy is consumed in layers, rigid vibration transmission is blocked, and operating noise is absorbed, reducing the hand-held vibration on the surface of the hollow cylindrical shell 1 and the overall operating noise of the machine. This ensures the stable power output of the brushless DC motor 31 and avoids vibration interference with the clamping accuracy of the front clamping structure 2 and the mixing effect of the test tube, thus maintaining the comfort and operational stability of the device for hand-held use for a long time.
[0030] It is worth noting that, in order to improve the friction of hand operation, the outer walls of the annular sleeve 2324 and the hollow cylindrical shell 1 are provided with anti-slip textures 8 for hand gripping; by increasing the external contact friction coefficient of the shell through the anti-slip textures 8, anti-slip limit is achieved during the gripping and adjustment operation, avoiding hand slippage that could cause operational errors or equipment slippage. Example
[0031] Unlike Example 1, as Figure 4 and Figure 6 As shown, in order to facilitate the assembly and disassembly of the connecting sleeve 21 and the hollow cylindrical shell 1, the top opening of the hollow cylindrical shell 1 is provided with an external thread 11, and the inner wall of the connecting sleeve 21 near the hollow cylindrical shell 1 is provided with an internal thread 211 for matching the external thread 11.
[0032] When it is necessary to replace the elastic clamping part 22 of different specifications, simply rotate the connecting sleeve 21 to gradually separate and unlock the internal thread 211 and the external thread 11. The connecting sleeve 21 can then be removed from the top of the hollow cylindrical shell 1 for easy replacement, maintenance, or replacement of different models of elastic clamping parts 22. Conversely, rotating the connecting sleeve 21 clockwise causes the internal thread 211 and the external thread 11 to gradually mesh. Through the locking method of thread engagement, the connecting sleeve 21 is securely assembled and fixed at the top of the hollow cylindrical shell 1, thus completing the installation of the elastic clamping part 22. This ensures that the connecting sleeve 21 and the hollow cylindrical shell 1 maintain coaxiality and connection stability, ensuring that the vibration force generated by the eccentric drive structure 3 can be completely and evenly transmitted to the clamping structure 2 and the test tube, maintaining the smooth operation of the mixing process.
[0033] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.
Claims
1. A portable test tube liquid high-efficiency mixing device, characterized in that: Includes a hollow cylindrical shell for handheld use (1); The clamping structure (2) includes a connecting sleeve (21) disposed at the top opening of the hollow cylindrical shell (1), an elastic clamping part (22) disposed in the connecting sleeve (21) for elastically holding the test tube, and a limiting component (23) disposed in the hollow cylindrical shell (1) for limiting the insertion depth of the test tube. An eccentric drive structure (3) includes a brushless DC motor (31) located inside the hollow cylindrical shell (1) below the limiting component (23), a fan-shaped eccentric wheel (32) fixedly connected to the output shaft of the brushless DC motor (31) for rotating to generate periodic centrifugal force to form vibration, and a vibration damping and noise reduction component (33) located between the hollow cylindrical shell (1) and the brushless DC motor (31) for vibration damping and noise reduction. The power supply structure (4) includes a lithium battery (41) fixedly disposed inside the hollow cylindrical shell (1) at a position corresponding to the position below the brushless DC motor (31) for overall power supply, and a Type-C charging interface (42) fixedly disposed at the bottom of the hollow cylindrical shell (1) for charging the lithium battery (41).
2. The portable test tube liquid high-efficiency mixing device according to claim 1, characterized in that: The hollow cylindrical shell (1) has an external thread (11) at the top opening, and the connecting sleeve (21) has an internal thread (211) on the inner wall of one end near the hollow cylindrical shell (1) for matching the external thread (11).
3. The portable test tube liquid high-efficiency mixing device according to claim 2, characterized in that: The elastic clamping part (22) includes a silicone ring (221) coaxially arranged with the connecting sleeve (21) and located inside the connecting sleeve (21), and an elastic member (222) arranged on the outside of the silicone ring (221) and distributed in a ring. The two ends of the elastic member (222) are fixedly connected to the outside of the silicone ring (221) and the inner wall of the connecting sleeve (21), respectively.
4. The portable test tube liquid high-efficiency mixing device according to claim 3, characterized in that: The elastic element (222) is an elastic sheet or a vibration spring.
5. The portable test tube liquid high-efficiency mixing device according to claim 3, characterized in that: The limiting component (23) includes a limiting ring (231) disposed inside the hollow cylindrical shell (1) and located between the silicone ring (221) and the brushless DC motor (31) for supporting the bottom of the test tube, and an adjusting component (232) disposed on the hollow cylindrical shell (1) for driving the limiting ring (231) to move axially and locking it.
6. The portable test tube liquid high-efficiency mixing device according to claim 5, characterized in that: The adjusting assembly (232) includes through slots (2321) respectively opened on the hollow cylindrical shell (1) at positions corresponding to both sides of the limiting ring (231), a guide rail (2322) fixedly connected in the through slots (2321), a sliding sleeve (2323) slidably sleeved on the guide rail (2322) and fixedly connected to the side of the limiting ring (231), an annular sleeve (2324) sleeved on the outside of the hollow cylindrical shell (1) and fixedly connected to the side of the two sliding sleeves (2323) away from the limiting ring (231), and positioning holes (232) respectively opened on both sides of the guide rail (2322) near the annular sleeve (2324) and linearly distributed. 5) A fixed cylinder (2326) is fixedly connected to the side of the sliding sleeve (2323) near the positioning hole (2325), a telescopic rod (2327) is transversely penetrating the fixed cylinder (2326) and slidably connected inside the fixed cylinder (2326), a return spring (2328) sleeved on the telescopic rod (2327), and a positioning bead (2329) fixedly connected to the end of the telescopic rod (2327) away from the fixed cylinder (2326) for insertion into the positioning hole (2325) to achieve gear locking. The two ends of the return spring (2328) are fixedly connected to the telescopic rod (2327) and the inside of the fixed cylinder (2326) respectively.
7. The portable test tube liquid high-efficiency mixing device according to claim 6, characterized in that: The outer walls of the annular sleeve (2324) and the hollow cylindrical shell (1) are provided with anti-slip textures (8) for hand gripping.
8. The portable test tube liquid high-efficiency mixing device according to claim 1, characterized in that: The vibration damping and noise reduction assembly (33) includes a base (331) fixedly connected to the bottom of the brushless DC motor (31), an inner damping pad wrapped around the outside of the base (331), a hollow vibration damping bracket (332) fixedly connected at both ends to the inner wall of the base (331) and the hollow cylindrical shell (1) respectively, and an outer damping pad (333) filling the gap between the brushless DC motor (31) and the hollow cylindrical shell (1). Multiple hollow vibration damping brackets (332) are provided.
9. The portable test tube liquid high-efficiency mixing device according to claim 8, characterized in that: The inner wall of the hollow cylindrical shell (1) is filled with sound insulation cotton.
10. The portable test tube liquid high-efficiency mixing device according to claim 1, characterized in that: The high-efficiency mixing device also includes a control module, a speed control button (5) for adjusting the speed of the brushless DC motor (31) located on one side of the bottom of the hollow cylindrical shell (1), a mode button (6) for mode switching, a power switch (7), and an indicator light (9). The brushless DC motor (31) is connected to the output terminal of the control module, and the speed control button (5), mode button (6), and power switch (7) are all connected to the input terminal of the control module. The indicator light (9) is electrically connected to the control module.