An automated electronic balance

Abstract

The utility model discloses an automatic electronic balance belongs to intelligent electronic balance technical field, including base, the left side of base is equipped with sterile weighing cabin, the right side of sterile weighing cabin is equipped with piezoelectric micro - drop jet device, the inside bottom of piezoelectric micro - drop jet device is equipped with object table, be equipped with the jet kettle on the object table, the inclination angle direction of base is equipped with display screen, the right side of display screen is equipped with a group of control switch, the bottom of base is installed with electric support foot. The utility model discloses through the integration ultraviolet lamp disinfection system and air filter device (with semicircular filter plate design), can high -efficiently remove the suspended particulate and microorganism in air, forms local super -clean airflow area. Again cooperation jet head's directional injection, make whole weighing liquid adding process under the controlled clean environment, effectively avoid cross -contamination, and widely applicable to pharmaceutical, biological experiment etc. High -demand scene.

Description

Technical Field

[0001] This utility model relates to the field of intelligent electronic balance technology, and more specifically, to an automated electronic balance. Background Technology

[0002] Electronic balances, as commonly used precision measuring devices in laboratories, are widely used in various fields such as chemistry, biology, pharmaceuticals, and food. Currently, traditional electronic balances typically only have basic weighing functions, requiring manual sample addition or powder feeding. This is not only inefficient, but also prone to introducing errors during micro-volume sample addition, making it difficult to meet the experimental requirements of μg-level or higher precision. Furthermore, in some high-cleanliness experimental scenarios, conventional electronic balances lack effective means to control the cleanliness of the weighing environment. When researchers perform weighing and sample addition in an open environment, samples are easily exposed to air and contaminated, affecting the accuracy and repeatability of experimental results.

[0003] In recent years, some high-end laboratories have begun to introduce equipment or clean weighing chamber systems equipped with automatic liquid dispensing functions, but most existing solutions have the following problems:

[0004] 1) The automatic sample dispensing device lacks precision. Traditional peristaltic pump and plunger pump dispensing methods are difficult to achieve nano-level droplet control, resulting in problems of over-dispensing or under-dispensing.

[0005] 2) The clean weighing chamber has a complex structure and high cost. Some of them use external high-flow laminar flow hoods or independent purification devices, which occupy a lot of space and are inconvenient to maintain.

[0006] 3) The weighing platform lacks an automatic leveling function, requiring manual adjustment of the support feet, which affects the equipment installation efficiency and weighing stability;

[0007] 4) Inconvenient human-computer interaction: Most devices only support button operation or limited digital input interface, the operation process is cumbersome and not conducive to rapid parameter configuration.

[0008] Therefore, there is an urgent need for a new type of automated electronic balance that is compact, has microdroplet loading capability, can provide a local sterile weighing environment, and supports automatic leveling and convenient interaction, in order to solve many bottlenecks in existing technologies and improve experimental operation efficiency and precision control capabilities. Utility Model Content

[0009] 1. Technical problems to be solved

[0010] In view of the problems existing in the prior art, the purpose of this utility model is to provide an automated electronic balance that provides a local sterile weighing environment and supports automatic leveling. By integrating an ultraviolet lamp disinfection system and an air filtration device (with a semi-circular filter plate design), it can efficiently remove suspended particles and microorganisms in the air and form a local ultra-clean airflow zone.

[0011] 2. Technical Solution

[0012] To solve the above problems, the present invention adopts the following technical solution.

[0013] An automated electronic balance includes a base, a sterile weighing chamber on the left side of the base, a piezoelectric microdroplet ejection device on the right side of the sterile weighing chamber, a stage on the inner bottom of the piezoelectric microdroplet ejection device, an ejection bottle on the stage, a display screen on the tilt angle of the base, a set of control switches on the right side of the display screen, and an electric support foot installed at the bottom of the base.

[0014] Furthermore, a weighing sensor is provided at the bottom of the platform.

[0015] Based on the above features, the sterile weighing chamber is provided with a top plate, an ultraviolet lamp is installed on the lower side of the top plate, and an air filtration device is provided below the ultraviolet lamp.

[0016] In some embodiments, the top plate is integrated with the ultraviolet lamp and is detachably installed with the sterile weighing chamber, and a door is installed on the left side of the sterile weighing chamber.

[0017] Based on the above features, the air filtration device has a filter plate inside, the filter plate is semi-circular, and the spray bottle has a nozzle that can extend to the air filtration device.

[0018] In some embodiments, the bottom of the display screen is provided with a three-axis tilt sensor, which automatically adjusts the support feet to achieve the balance of the base by detecting the tilt angle signal.

[0019] Based on the above features, the display screen has a touch function, allowing users to make various settings and adjustments through the touch screen, making the weighing process convenient and quick.

[0020] 3. Beneficial effects

[0021] Compared with existing technologies, the advantages of this utility model are:

[0022] 1) This utility model integrates an ultraviolet lamp disinfection system with an air filtration device (with a semi-circular filter plate design), which can efficiently remove suspended particles and microorganisms from the air and form a localized ultra-clean airflow zone. Combined with the directional spray of the nozzle, the entire weighing and liquid addition process is carried out in a controlled clean environment, effectively avoiding cross-contamination, and is widely applicable to high-requirement scenarios such as pharmaceuticals and biological experiments.

[0023] 2) The top plate 22 and the ultraviolet lamp 21 are integrated and detachable, which facilitates the replacement of ultraviolet light source and cleaning of internal components, thereby improving the service life of the equipment and the convenience of maintenance.

[0024] 3) By working in conjunction with the electric support foot 5 at the bottom of the base, the three-axis tilt sensor 91 at the bottom of the display screen can achieve automatic leveling of the balance, ensuring that it maintains a high-precision working state in different installation environments, reducing manual intervention and improving operating efficiency and stability.

[0025] 4) The spray bottle 7, nozzle 8 and sterile weighing chamber 2 are integrated into a single layout, and the nozzle can extend into the air filtration area. This achieves a highly integrated sterile sample dispensing path design within a limited space, effectively reducing the risk of contamination and energy consumption on the transmission path, demonstrating a high degree of engineering rationality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an automated electronic balance according to the present invention;

[0027] Figure 2 This is a top view of an automated electronic balance according to the present invention;

[0028] Figure 3 This is a front view of an automated electronic balance according to the present invention;

[0029] Figure 4 This utility model Figure 3 Sectional view along the AA direction.

[0030] Explanation of the labels in the diagram:

[0031] 1. Door; 2. Sterile weighing chamber; 3. Air filtration device; 4. Base; 5. Electric support feet; 6. Piezoelectric microdroplet jetting device; 7. Sprayer; 8. Nozzle; 9. Display screen; 10. Control switch; 11. Stage; 12. Weighing sensor; 13. Filter plate; 21. Ultraviolet lamp; 22. Top plate; 91. Triaxial tilt sensor. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0033] Example 1:

[0034] Please see Figure 1-4 An automated electronic balance includes a base 4, a sterile weighing chamber 2 on the left side of the base 4, a piezoelectric microdroplet ejection device 6 on the right side of the sterile weighing chamber 2, a platform 11 on the inner bottom of the piezoelectric microdroplet ejection device 6, an ejection bottle 7 on the platform 11, a display screen 9 on the tilt angle of the base 4, a set of control switches 10 on the right side of the display screen 9, an electric support foot 5 installed at the bottom of the base 4, and a weighing sensor 12 at the bottom of the platform 11. A top plate 22 is provided on the top of the sterile weighing chamber 2, an ultraviolet lamp 21 is installed on the lower side of the top plate 22, and an air filter 3 is located below the ultraviolet lamp 21.

[0035] In some embodiments, the top plate 22 is integrated with the ultraviolet lamp 21 and is detachably installed with the sterile weighing chamber 2. A door 1 is installed on the left side of the sterile weighing chamber 2. The air filtration device 3 has a filter plate 13 inside, which is semi-circular. The spray bottle 7 has a nozzle 8 that can extend to the air filtration device 3.

[0036] In some embodiments, a three-axis tilt sensor 91 is provided at the bottom of the display screen 9, which automatically adjusts the support feet to achieve the balance of the base 4 by detecting the tilt angle signal. The display screen 9 has a touch function, allowing users to make various settings and adjustments through the touch screen 9, making the weighing process convenient and quick to operate.

[0037] Working Principle: The base 4 is the foundation platform of the entire device, supporting all core components. It is equipped with electrically powered support feet 5 for automatic leveling. The sterile weighing chamber 2, located on the left side of the base, is a closed or semi-closed cavity and the core working area. A door 1 is located on its left side for placing / removing sample containers. The chamber design ensures a controllable internal operating environment. The piezoelectric microdroplet ejection device 6 is located on the right side of the sterile weighing chamber and extends into the chamber. Its core function is to generate precise and controllable microdroplets using the piezoelectric effect. A stage 11 is located at the bottom inside the device for placing containers (such as sample vials or reaction dishes) to be added.

[0038] The spray bottle 7 stores the liquid to be added. It is equipped with a nozzle 8 that can be precisely positioned and extended near or inside the air filter 3, ensuring that the sprayed droplets are protected by filtered air. The air filter 3 is located at the top of the sterile weighing chamber, below the ultraviolet lamp 21. Its primary function is to maintain the cleanliness of the air inside the chamber.

[0039] The filter plate 13 is the core filter element, designed in a semi-circular shape. This design effectively increases the filtration area and optimizes the airflow path (such as forming laminar or vertical flow), more efficiently removing airborne particles and microorganisms, providing a localized ultra-clean environment for the weighing and liquid addition process. The nozzle 8) extends into this area, further ensuring the sterility of the droplet spraying process. An ultraviolet lamp 21 is installed under the top plate 22. It is used to disinfect the interior of the sterile weighing chamber with ultraviolet light, killing any microorganisms that may be present, and sterilizing the work area before or after operation.

[0040] The top plate 22 and UV lamp 21 feature an integrated, detachable design: this is a significant innovation for maintenance and upgrades. The integrated design simplifies the structure and improves reliability; detachability facilitates replacement of damaged UV lamps or upgrading of lamp types, and also makes cleaning the top plate and UV lamp surfaces easy. The load cell 12 is precisely mounted on the bottom of the stage 11. This is the core metrological component of the equipment, used for real-time, high-precision measurement of the mass of the container and its contents on the stage. Its signal is crucial feedback for controlling the piezoelectric droplet ejection.

[0041] The display screen 9 is located at the tilt angle of the base (for easy viewing by the user).

[0042] The control switch 10 is located on the right side of the display screen. Physical buttons are provided for quick operation of frequently used functions (such as emergency stop, power switch, confirmation button, etc.), serving as a supplement or redundant control to the touchscreen. A three-axis tilt sensor 91 is integrated at the bottom of the display screen 9). Its core function is to monitor the tilt angle of the equipment base in the X, Y, and Z axes in real time, which is crucial for ensuring a high-precision weighing environment. Motorized support feet 5 are mounted on the bottom of the base 4. Receiving commands from the control system, they automatically extend and retract (typically with micrometer / millimeter-level precision adjustment) to adjust the levelness of the base.

[0043] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. An automated electronic balance, comprising a base (4), characterized in that: The base (4) has a sterile weighing chamber (2) on the left side and a piezoelectric microdroplet jetting device (6) on the right side of the sterile weighing chamber (2). The piezoelectric microdroplet jetting device (6) has a platform (11) at the bottom inside and a jetting bottle (7) on the platform (11). The base (4) has a display screen (9) at the tilt angle and a set of control switches (10) on the right side of the display screen (9). The base (4) has an electric support foot (5) installed at the bottom.

2. The automated electronic balance according to claim 1, characterized in that: The bottom of the platform (11) is equipped with a weighing sensor (12).

3. The automated electronic balance according to claim 1, characterized in that: The sterile weighing chamber (2) is provided with a top plate (22) on the top, and an ultraviolet lamp (21) is installed on the lower side of the top plate (22). An air filter device (3) is provided below the ultraviolet lamp (21).

4. An automated electronic balance according to claim 3, characterized in that: The top plate (22) is integrated with the ultraviolet lamp (21) and is detachably installed with the sterile weighing chamber (2). The sterile weighing chamber (2) has a door (1) installed on the left side.

5. An automated electronic balance according to claim 3, characterized in that: The air filter device (3) has a filter plate (13) inside, which is semi-circular, and the spray bottle (7) has a nozzle (8) that can extend to the air filter device (3).

6. An automated electronic balance according to claim 1, characterized in that: The bottom of the display screen (9) is equipped with a three-axis tilt sensor (91), which automatically adjusts the support foot (5) to achieve the balance of the base by detecting the tilt angle signal.

7. An automated electronic balance according to claim 1, characterized in that: The display screen (9) has a touch function, and users can make various settings and adjustments through the touch screen to operate the weighing process conveniently and quickly.

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