Automatic solid powder sample adding instrument matched with electronic balance

Abstract

The utility model provides an automatic solid powder sample adding instrument matched with an electronic balance. The automatic solid powder sample adding instrument comprises a bracket bottom plate; a lifting mechanism, a driving assembly, a powder barrel and a control system, the lifting mechanism is arranged on the support bottom plate, a cross beam is arranged on the lifting mechanism, and the lifting mechanism can drive the cross beam to ascend and descend; the driving assembly is arranged on the cross beam and can move up and down along with the cross beam; the driving assembly is detachably connected with the powder barrel and can drive the powder barrel to discharge; the control system is a multi-stage variable speed control system, the control system is electrically connected with the lifting mechanism to control the lifting mechanism to ascend and descend, and the control system is connected with the driving assembly to control discharging of the powder barrel. According to the automatic solid powder sample adding instrument disclosed by the utility model, nondestructive installation and automatic use of the balance can be realized, and the sample adding efficiency and the sample adding precision can be considered at the same time by virtue of a multi-stage variable-speed control system, so that the structure can complete a weighing task from a sub-milligram level to a gram level.

Description

Technical Field

[0001] The utility model relates to the field of solid sample addition, in particular to an automatic solid powder sample addition instrument adapted to an electronic balance. Background Art

[0002] In the fields of drug development, high-throughput screening, analytical identification, material science, and catalyst research, trace liquid and solid dosing is often required. High-precision liquid and powder quantitative dosing instruments are used to automatically and accurately dispense trace amounts of liquid and powder solid raw materials in experiments. This type of technology can improve the accuracy and repeatability of dosing, save experimental time and costs, and reduce the risk of human error and contamination.

[0003] However, from a technical perspective, liquids generally have fluidity and uniformity, and can be accurately transferred through forward displacement, air displacement, capillary action, ultrasonic fragmentation, etc., and there are many mature liquid processing workstations and instruments. Solid powders usually have different shapes and properties, and generally have no fluidity and uniformity. Therefore, it is more difficult to achieve solid transfer, especially micro-precise transfer, and the existing technology cannot achieve micro-precise transfer of solids.

[0004] Moreover, in the prior art, it is impossible to clearly understand the name information, number of uses, usage amount, remaining amount, etc. of the medicine in the medicine barrel, which brings trouble to the use. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the utility model provides an automatic solid powder sampler adapted to an electronic balance, comprising:

[0006] Bracket bottom plate;

[0007] A lifting mechanism, the lifting mechanism is arranged on the bottom plate of the support, a crossbeam is arranged on the lifting mechanism, and the lifting mechanism can drive the crossbeam to rise and fall;

[0008] A driving assembly, the driving assembly is arranged on the crossbeam and can move up and down with the crossbeam;

[0009] A powder barrel, the driving assembly being detachably connected to the powder barrel and capable of driving the powder barrel to discharge materials; and

[0010] A control system, wherein the control system is a multi-stage speed control system, the control system is electrically connected to the lifting mechanism to control the lifting mechanism to rise and fall, and the control system is connected to the driving component to control the powder barrel to discharge.

[0011] The automated solid powder adder compatible with the electronic balance in this embodiment adopts a horizontal bracket structure and a lifting design, and can use the external data interface commonly used by balances for communication, so as to realize non-destructive installation and automated use of the balance. It is the first innovation in terms of structural form and has a wider range of applications. Moreover, the control system adopts a multi-stage speed control system, which can take into account both the adding efficiency and the adding accuracy, so that the structure can complete weighing tasks from sub-milligram level to gram level.

[0012] Optionally, the powder barrel comprises a barrel body, a cover body, a push rod and a first gear;

[0013] The cover body is covered on the barrel body, the push rod is arranged in the barrel body, the first gear is arranged on the cover body and connected to the upper end of the push rod, and the driving assembly is in transmission connection with the first gear;

[0014] The lower end of the push rod has a threaded structure, and the threaded structure is at least located at the discharge port of the barrel body.

[0015] Optionally, a stirring frame is provided on the push rod; the lower end of the barrel body has an extension portion, the extension portion has a discharge channel leading to the discharge port of the barrel body, the threaded structure is at least located in the discharge channel, and the diameter of the threaded structure is equal to the inner diameter of the discharge channel.

[0016] Optionally, the end of the threaded structure is semicircular, and the discharge port of the barrel body is rectangular; the side of the barrel body is connected to a feeding port.

[0017] Optionally, the end of the threaded structure is a plurality of circumferentially spaced fan-shaped blocks, the threaded structure includes a plurality of threads, the discharge port of the barrel body includes a plurality of circumferentially spaced fan-shaped openings, and the plurality of fan-shaped blocks correspond one-to-one to the plurality of fan-shaped openings.

[0018] Optionally, the powder barrel further includes a first bearing and a second bearing, the first bearing is arranged on the cover body, the first gear cooperates with the first bearing, the second bearing is arranged on the barrel body, and the push rod cooperates with the second bearing; a plurality of sensing components are arranged on the first gear, and the plurality of sensing components are distributed in a circular array on the first gear, a photoelectric switch is arranged on one side of the first gear, the photoelectric switch can detect the rotation angle of the first gear by sensing the sensing component, and the photoelectric switch is electrically connected to the control system.

[0019] Optionally, the driving assembly includes a support plate, a first motor and a second gear;

[0020] The support plate is disposed on the crossbeam, the first motor is disposed on the support plate, the second gear is disposed on the output shaft of the first motor, and the second gear is meshed with the first gear;

[0021] The support plate is provided with a groove in which a first magnet is built-in, and the barrel body is provided with a second magnet. The first magnet and the second magnet attract each other, and the barrel body is adapted to the groove.

[0022] Optionally, the drive assembly also includes a second motor, a rotating rod and a baffle, the control system is electrically connected to the second motor, the second motor is arranged on the support plate, the control system is electrically connected to the second motor, the output shaft of the second motor is connected to the rotating rod, the rotating rod is connected to the baffle, and the baffle can close or open the discharge port of the barrel body under the drive of the second motor; a pressure-sensitive component and an automatic laser device are arranged on the baffle, the automatic laser device is used to locate the center of the powder barrel, and the control system is electrically connected to the pressure-sensitive component; the first motor and / or the second motor is a closed-loop drive motor.

[0023] Optionally, the powder barrel is provided with a magnetic code or an electronic tag, and the drive assembly is provided with an identifier capable of reading the magnetic code or the electronic tag, and the identifier identifies the name information, number of uses, used amount and remaining amount of the drug in the powder barrel by reading the magnetic code or the electronic tag, and the identifier is a radio frequency identifier or a barcode identifier.

[0024] Optionally, the lifting mechanism includes a third motor, a first pulley, a second pulley, a synchronous belt, a coupling, a connecting block and a vertical shaft;

[0025] The third motor is a stepper motor with a brake, and the third motor is arranged on the bottom plate of the bracket. The output shaft of the third motor is connected to the coupling, and the coupling is connected to the first pulley. The first pulley and the second pulley are connected through the synchronous belt transmission. The synchronous belt is provided with the connecting block, the vertical axis is fixed to the connecting block, and the crossbeam is connected to the top end of the vertical axis.

[0026] Optionally, a bracket plate is arranged on the bracket bottom plate, and the control system is arranged on the bracket plate;

[0027] The automatic solid powder sampler adapted to the electronic balance further comprises a radar device, and the radar device is used to measure the height of the powder barrel;

[0028] The multi-stage speed control system calculates n node quantities from the target value according to the set quantity, thereby obtaining n+1 intervals, and reads the response value of the balance in real time and determines the interval in which it is located. The interval in which the real-time response value is located is used as the judgment standard to control the rotation speed of the drive component to be reduced step by step; in each interval, the powder output speed is monitored at a preset time interval, and the rotation speed is adaptively adjusted.

[0029] Optionally, the automated solid powder sampler adapted to the electronic balance further comprises a wireless control module, and the wireless control module wirelessly communicates with the control system to control the control system through the wireless control module, and the wireless communication method comprises Bluetooth communication and WiFi communication.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0032] Figure 1 It is a schematic diagram of an automated solid powder sampler and a balance adapted to an electronic balance in one embodiment of the utility model;

[0033] Figure 2 It is a schematic diagram of an automated solid powder sampler adapted to an electronic balance in one embodiment of the utility model;

[0034] Figure 3 It is a front view of an automatic solid powder sampler adapted to an electronic balance in one embodiment of the utility model;

[0035] Figure 4 It is a schematic diagram of a drive assembly and a powder barrel in one embodiment of the utility model;

[0036] Figure 5 It is a schematic diagram of a powder barrel in one embodiment of the utility model;

[0037] Figure 6 This is a cross-sectional view of a powder barrel in one embodiment of the utility model;

[0038] Figure 7 It is a schematic diagram of a barrel in one embodiment of the utility model;

[0039] Figure 8 This is a bottom view of the barrel in one embodiment of the utility model;

[0040] Fig. 9 This is a bottom view of a powder barrel in one embodiment of the utility model;

[0041] Fig.10 It is a partial schematic diagram of a push rod in one embodiment of the utility model;

[0042] Fig.11 It is a partial schematic diagram of a push rod in another embodiment of the utility model.

[0043] Reference numerals:

[0044] 1- Balance;

[0045] 10- bracket bottom plate; 11- bracket plate;

[0046] 20-lifting mechanism; 21-third motor; 22-first pulley; 23-second pulley; 24-synchronous belt; 25-coupling; 26-connecting block; 27-vertical axis; 201-crossbeam;

[0047] 30-driving assembly; 31-support plate; 32-first motor; 33-second gear; 34-second motor; 35-rotating rod; 36-baffle;

[0048] 40-powder barrel; 41-barrel body; 411-extension part; 412-feeding port; 42-cover body; 43-push rod; 431-threaded structure; 432-stirring frame; 44-first gear; 45-first bearing; 46-second bearing;

[0049] 50-Control system. DETAILED DESCRIPTION

[0050] The following will further describe the technical solution of the utility model in combination with specific embodiments. It should be understood that the following embodiments are only exemplary descriptions and explanations of the utility model, and should not be interpreted as limiting the scope of protection of the utility model. All technologies implemented based on the above content of the utility model are included in the scope of protection of the utility model.

[0051] This embodiment provides an automated solid powder sampler compatible with an electronic balance, which can be used in conjunction with an existing electronic balance 1 via a universal data interface.

[0052] See also Figure 1-Figure 3The automated solid powder dispenser adapted to the electronic balance comprises: a support base plate 10, a lifting mechanism 20, a driving assembly 30, a powder barrel 40 and a control system 50. The lifting mechanism 20 is arranged on the support base plate 10, and a crossbeam 201 is arranged on the lifting mechanism 20, and the lifting mechanism 20 can drive the crossbeam 201 to rise and fall; the driving assembly 30 is arranged on the crossbeam 201 and can move up and down with the crossbeam 201; the driving assembly 30 is detachably connected to the powder barrel 40 and can drive the powder barrel 40 to discharge materials; the control system 50 is a multi-stage speed control system, the control system 50 is electrically connected to the lifting mechanism 20 to control the lifting and lowering of the lifting mechanism 20, and the control system 50 is connected to the driving assembly 30 to control the discharge of the powder barrel 40.

[0053] The automatic solid powder loading instrument adapted to the electronic balance of the above embodiment controls the lifting mechanism 20 through the control system 50, so that the lifting mechanism 20 drives the crossbeam 201 to rise and fall to the specified position, and then drives the powder barrel 40 to discharge the material through the driving component 30, thereby realizing automatic loading of the powder barrel 40, and the control system 50 is a multi-stage variable speed control system, which first controls the solid powder to be discharged quickly during loading, and when it approaches the preset weight, slows down the loading speed, thereby improving the loading accuracy. The use of a multi-stage variable speed control system can take into account both loading efficiency and loading accuracy, so that the loading instrument can complete weighing tasks from sub-milligram level to gram level.

[0054] The control system 50 adopts an adaptive multi-stage speed change method to calculate multiple (if n) node quantities from the target value according to the set quantity, thereby obtaining n+1 intervals, and reading the response value of the balance 1 in real time and judging the interval it is in. The interval where the real-time response value is located is used as the judgment standard to control the speed to be reduced step by step. In each interval, the powder output speed is monitored at a preset time interval, and the speed is adaptively adjusted to make the powder output speed close to the average rate, thereby ensuring the feeding efficiency of powders of different densities, so that both the feeding efficiency and the feeding accuracy can be taken into account at the same time, so that powders of different densities can reach the same set feeding rate.

[0055] In some embodiments, the automated solid powder sampler adapted to the electronic balance further includes a wireless control module, which wirelessly communicates with the control system 50 to control the control system 50 through the wireless control module, and the wireless communication method includes Bluetooth communication and wifi communication. The wireless control module can coordinate the control system 50 to remotely control the instrument at an appropriate distance, and the use of the wireless control module can greatly facilitate the operator to perform micro-weighing and multiple weighing in the glove box.

[0056] In some embodiments, see Figure 5 and Figure 6The powder barrel 40 includes a barrel body 41, a cover body 42, a push rod 43 and a first gear 44; the cover body 42 covers the barrel body 41, the push rod 43 is arranged in the barrel body 41, and the first gear 44 is arranged in the cover body 42 and connected to the upper end of the push rod 43; the lower end of the push rod 43 has a threaded structure 431, and the threaded structure 431 is at least located at the discharge port of the barrel body 41. The driving assembly 30 is connected to the first gear 44 in a transmission manner to drive the first gear 44 to rotate, and the first gear 44 drives the push rod 43 to rotate. Since the lower end of the push rod 43 has a threaded structure 431, the powder will be pushed out of the discharge port as the push rod 43 rotates. By designing the shape, pitch, number of threads of the thread structure 431 and controlling the rotation speed, the precise distribution requirements of solid powder from sub-milligram level to gram level can be achieved.

[0057] In some embodiments, a stirring frame 432 is provided on the push rod 43; the stirring frame 432 rotates with the push rod 43 to loosen the powder in the barrel body 41. The lower end of the barrel body 41 has an extension portion 411, and the extension portion 411 has a discharge channel leading to the discharge port of the barrel body 41, and the threaded structure 431 is at least located in the discharge channel.

[0058] Furthermore, the diameter of the thread structure 431 is equal to the inner diameter of the discharge channel, so that the powder can only be transported downward through the thread structure 431, thereby improving the accuracy of powder distribution.

[0059] In some embodiments, a plurality of sensing components are provided on the first gear 44, and the plurality of sensing components are distributed in a circumferential array on the first gear 44. A photoelectric switch is provided on one side of the first gear 44, and the photoelectric switch can detect the rotation angle of the first gear 44 by sensing the sensing components, and the photoelectric switch is electrically connected to the control system 50. By providing the sensing components and the photoelectric switch, the rotation angle of the first gear 44 can be accurately determined, thereby more accurately controlling the powder output.

[0060] In some embodiments, see Fig.10 The end of the thread structure 431 is semicircular, see Fig. 9 The discharge port of the barrel body 41 is rectangular, and the semicircular thread structure 431 at the end and the rectangular discharge port can cooperate to achieve a normal opening form for continuous discharge during the sample addition process.

[0061] In some embodiments, see Fig.11 The end of the thread structure 431 is a plurality of circumferentially spaced sector blocks, see Figure 8 The discharge port of the barrel body 41 includes a plurality of sector-shaped ports distributed at circumferential intervals, the plurality of sector-shaped blocks correspond one to one with the plurality of sector-shaped ports, and the thread structure 431 includes a plurality of threads; by providing a plurality of threads, the powder flows along the plurality of threads to avoid material accumulation.

[0062] In some embodiments, see Figure 7 The side of the barrel body 41 is connected to a feeding port 412 , so that solid powder can be added into the barrel body 41 through the feeding port 412 .

[0063] In some embodiments, see Figure 6 The powder barrel 40 further includes a first bearing 45 and a second bearing 46. The first bearing 45 is disposed on the cover 42, the first gear 44 cooperates with the first bearing 45, the second bearing 46 is disposed on the barrel 41, and the push rod 43 cooperates with the second bearing 46. By providing the first bearing 45 and the second bearing 46, the rotation stability of the push rod 43 is improved, thereby improving the accuracy of powder distribution.

[0064] In some embodiments, see Figure 4 The driving assembly 30 includes a support plate 31, a first motor 32 and a second gear 33; the support plate 31 is arranged on the beam 201 and can move synchronously with the beam 201, the first motor 32 is arranged on the support plate 31, the second gear 33 is arranged on the output shaft of the first motor 32, and the second gear 33 is meshed with the first gear 44; thereby, the second gear 33 is driven to rotate by the first motor 32, the second gear 33 drives the first gear 44 to rotate, and the first gear 44 drives the push rod 43 to rotate.

[0065] Furthermore, the support plate 31 is provided with a groove for embedding the first magnet, and the barrel body 41 is provided with a second magnet, the first magnet and the second magnet are attracted to each other, and the barrel body 41 is adapted to the groove, thereby realizing a quick connection between the powder barrel 40 and the driving assembly 30. Among them, the first motor 32 is a closed-loop driving motor, so that the rotation angle can be accurately controlled to improve the accuracy of powder distribution.

[0066] In some embodiments, the drive assembly 30 also includes a second motor 34, a rotating rod 35 and a baffle 36. The second motor 34 is arranged on the support plate 31. The control system 50 is electrically connected to the second motor 34. The rotating rod 35 is connected to the output shaft of the second motor 34. The rotating rod 35 is connected to the baffle 36. The baffle 36 can close or open the discharge port of the barrel body 41 under the drive of the second motor 34; the control system 50 is electrically connected to the second motor 34, so as to control the second motor 34 to drive the rotating rod 35 and the baffle 36 to rotate, so as to close or open the discharge port of the barrel body 41 when necessary. The baffle 36 can effectively prevent accidental discharge.

[0067] Among them, the second motor 34 is a closed-loop drive motor, so that the rotation angle can be controlled more accurately, thereby accurately closing the discharge port of the barrel body 41.

[0068] Preferably, a pressure-sensitive component is provided on the baffle 36, and the control system 50 is electrically connected to the pressure-sensitive component; the pressure-sensitive component can prevent the powder barrel 40 from dropping too low, thereby damaging the scale 1. Specifically, when the pressure-sensitive component contacts the scale 1, a pressure signal is transmitted to the control system 50, and the control system 50 controls the third motor 21 to rotate in the opposite direction to move the powder barrel 40 upward, thereby avoiding damage to the scale 1.

[0069] Preferably, the baffle 36 is provided with an automatic laser device, which is used to locate the center of the powder barrel 40. The automatic laser device is electrically connected to the control system 50. When the baffle 36 closes the discharge port of the barrel body 41, the laser center of the automatic laser device coincides with the discharge port center of the barrel body 41, and the center of the sample bottle on the balance is located by the automatic laser device. When the baffle 36 opens the discharge port of the barrel body 41, the automatic laser device is automatically closed.

[0070] Furthermore, a magnetic code or an electronic tag is provided on the powder barrel 40, and an identifier capable of reading the magnetic code or the electronic tag is provided on the driving assembly 30, and the identifier identifies the name information, the number of times used, the used amount, and the remaining amount of the medicine in the powder barrel 40 by reading the magnetic code or the electronic tag. The identifier may be a radio frequency identifier or a barcode identifier.

[0071] In some embodiments, the lifting mechanism 20 includes a third motor 21, a first pulley 22, a second pulley 23, a synchronous belt 24, a coupling 25, a connecting block 26 and a vertical shaft 27; the third motor 21 is a stepping motor with a brake, and the third motor 21 is arranged on the bracket base plate 10, and the output shaft of the third motor 21 is connected to the coupling 25, and the coupling 25 is connected to the first pulley 22, and the first pulley 22 and the second pulley 23 are connected through the synchronous belt 24, and a connecting block 26 is arranged on the synchronous belt 24, and the vertical shaft 27 is fixed to the connecting block 26, and the crossbeam 201 is connected to the top of the vertical shaft 27.

[0072] Specifically, the control system 50 controls the third motor 21 to rotate, the third motor 21 drives the first pulley 22 to rotate, the first pulley 22 drives the second pulley 23 to rotate through the synchronous belt 24, the connecting block 26 moves up and down synchronously with the synchronous belt 24, the connecting block 26 drives the vertical shaft 27 to move up and down, and the vertical shaft 27 drives the crossbeam 201 to move up and down.

[0073] In some embodiments, a support plate 11 is disposed on the support bottom plate 10, and the control system 50 is disposed on the support plate 11. The automatic solid powder loading instrument adapted to the electronic balance further includes a radar device, which is used to measure the height of the powder barrel 40.

[0074] In summary, the automated solid powder sampler adapted to the electronic balance in this embodiment adopts a horizontal bracket structure and a lifting design, and can use the RS232 external data interface commonly used in balances for communication, which can realize non-destructive installation and automated use of the balance. It is the first innovation in terms of structure and has a wider range of applications. The use of an internal stirring rack and a threaded structure to push powder can effectively solve the problem of material blockage. At the same time, the combination of a rectangular discharge port and the end of a semicircular threaded structure realizes a constant opening form for continuous discharge during the feeding process, which can achieve more accurate discharge control than the reported trace solid feeding structure. And the control mode is only a rotation mode, which cancels the up and down movement, thereby avoiding the lack of powder or uncontrolled powder discharge due to the failure of the elastic structure performance. The use of automatic laser devices and radar devices can effectively locate the discharge center and the height of the powder barrel. The pressure-sensitive component serves as a second layer of protection to prevent the discharge component from being too low and damaging the balance; at the same time, the automatic baffle can effectively prevent accidental discharge. In addition, the multi-speed control system can take into account both the sample addition efficiency and the sample addition accuracy, so that the structure can complete the weighing task from sub-milligram level to gram level. By setting a magnetic code on the powder barrel, the name information, number of uses, used amount and remaining amount of the drug in the powder barrel can be identified, thereby improving the convenience of use.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0076] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0077] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0079] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0080] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automated solid powder sampler adapted to an electronic balance, characterized in that: include: Support bottom plate (10); A lifting mechanism (20), the lifting mechanism (20) being arranged on the support bottom plate (10), the lifting mechanism (20) being provided with a crossbeam (201), and the lifting mechanism (20) being capable of driving the crossbeam (201) to move up and down; A driving assembly (30), wherein the driving assembly (30) is disposed on the crossbeam (201) and is capable of moving up and down along with the crossbeam (201); A powder barrel (40), wherein the driving assembly (30) is detachably connected to the powder barrel (40) and is capable of driving the powder barrel (40) to discharge materials; as well as A control system (50), wherein the control system (50) is a multi-speed control system, wherein the control system (50) is electrically connected to the lifting mechanism (20) to control the lifting mechanism (20) to rise and fall, and wherein the control system (50) is connected to the driving assembly (30) to control the discharge of the powder barrel (40).

2. The automatic solid powder sampler adapted to an electronic balance according to claim 1, characterized in that: The powder barrel (40) comprises a barrel body (41), a cover body (42), a push rod (43) and a first gear (44); The cover body (42) is covered on the barrel body (41), the push rod (43) is arranged in the barrel body (41), the first gear (44) is arranged on the cover body (42) and connected to the upper end of the push rod (43), and the driving component (30) is drivingly connected to the first gear (44); The lower end of the push rod (43) has a threaded structure (431), and the threaded structure (431) is at least located at the discharge port of the barrel body (41).

3. The automatic solid powder sampler adapted to an electronic balance according to claim 2, characterized in that: The push rod (43) is provided with a stirring frame (432); the lower end of the barrel body (41) has an extension portion (411), and the extension portion (411) has a discharge channel leading to the discharge port of the barrel body (41); the threaded structure (431) is at least located in the discharge channel, and the diameter of the threaded structure (431) is equal to the inner diameter of the discharge channel.

4. The automatic solid powder sampler adapted to an electronic balance according to claim 3, characterized in that: The end of the threaded structure (431) is semicircular, and the discharge port of the barrel body (41) is rectangular; the side of the barrel body (41) is connected to a feeding port (412).

5. The automatic solid powder sampler adapted to an electronic balance according to claim 3, characterized in that: The end of the thread structure (431) is a plurality of circumferentially spaced fan-shaped blocks, the thread structure (431) includes a plurality of threads, the discharge port of the barrel body (41) includes a plurality of circumferentially spaced fan-shaped openings, and the plurality of fan-shaped blocks correspond one to one with the plurality of fan-shaped openings.

6. The automated solid powder sampler adapted to an electronic balance according to any one of claims 2 to 5, characterized in that: The powder barrel (40) further comprises a first bearing (45) and a second bearing (46), wherein the first bearing (45) is arranged on the cover body (42), the first gear (44) cooperates with the first bearing (45), the second bearing (46) is arranged on the barrel body (41), and the push rod (43) cooperates with the second bearing (46); The first gear (44) is provided with a plurality of sensing components, which are distributed in a circular array on the first gear (44). A photoelectric switch is provided on one side of the first gear (44), and the photoelectric switch can detect the rotation angle of the first gear (44) by sensing the sensing components. The photoelectric switch is electrically connected to the control system (50).

7. The automatic solid powder sampler adapted to an electronic balance according to claim 2, characterized in that: The driving assembly (30) comprises a support plate (31), a first motor (32) and a second gear (33); The support plate (31) is arranged on the crossbeam (201), the first motor (32) is arranged on the support plate (31), the second gear (33) is arranged on the output shaft of the first motor (32), and the second gear (33) is meshed with the first gear (44); The support plate (31) is provided with a groove in which a first magnet is built, and the barrel body (41) is provided with a second magnet, the first magnet and the second magnet attract each other, and the barrel body (41) is adapted to the groove.

8. The automatic solid powder sampler adapted to an electronic balance according to claim 7, characterized in that: The driving assembly (30) further comprises a second motor (34), a rotating rod (35) and a baffle (36); the second motor (34) is arranged on the supporting plate (31); the control system (50) is electrically connected to the second motor (34); the rotating rod (35) is connected to the output shaft of the second motor (34); the rotating rod (35) is connected to the baffle (36); the baffle (36) can close or open the discharge port of the barrel (41) under the drive of the second motor (34); a pressure-sensitive component and an automatic laser device are arranged on the baffle (36); the pressure-sensitive component and the automatic laser device are both electrically connected to the control system (50); the automatic laser device is used to locate the center of the powder barrel (40); the control system (50) is electrically connected to the pressure-sensitive component; The first motor (32) and / or the second motor (34) are closed-loop drive motors; The powder barrel (40) is provided with a magnetic code or an electronic tag, and the drive assembly (30) is provided with an identifier capable of reading the magnetic code or the electronic tag. The identifier identifies the name information, the number of times the drug is used, the amount used, and the remaining amount of the drug in the powder barrel (40) by reading the magnetic code or the electronic tag. The identifier is a radio frequency identifier or a bar code identifier.

9. The automatic solid powder sampler adapted to an electronic balance according to claim 1, characterized in that: The lifting mechanism (20) comprises a third motor (21), a first pulley (22), a second pulley (23), a synchronous belt (24), a coupling (25), a connecting block (26) and a vertical shaft (27); The third motor (21) is a stepper motor with a brake. The third motor (21) is arranged on the bracket base plate (10). The output shaft of the third motor (21) is connected to the coupling (25). The coupling (25) is connected to the first pulley (22). The first pulley (22) and the second pulley (23) are connected through the synchronous belt (24). The synchronous belt (24) is provided with the connecting block (26). The vertical shaft (27) is fixed to the connecting block (26). The crossbeam (201) is connected to the top of the vertical shaft (27).

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