Automatic sample adding and weighing device
By designing an automatic sample addition and weighing device, the problems of large manual operation errors and inability to quantify liquids in traditional weighing instruments are solved, realizing automated solid-liquid weighing and improving the accuracy and versatility of weighing.
Patent Information
- Application Number
- CN202520530291.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-25
AI Technical Summary
Traditional weighing instruments require manual operation, are prone to errors, and cannot quantitatively absorb liquids, thus having limited functionality.
An automatic sample feeding and weighing device was designed, comprising a control unit, a moving unit, and a weighing unit. It employs a suction pump, a gripping clamp, and a sampling tube, combined with vertical, horizontal movement, and rotation components, to achieve automated weighing and gripping and suction of liquid and solid substances.
It achieves an automated weighing process, reduces human error, and can simultaneously grasp solids and suck up liquids, improving weighing accuracy and functional versatility.
Smart Images
Figure CN223796122U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of weighing technology, and in particular relates to an automatic sample adding and weighing device. Background Technology
[0002] Traditional weighing instruments all require manual addition and weighing. The weighing process necessitates human observation and continuous addition and subtraction, often resulting in repeated additions and subtractions. This leads to a high rate of human error and can result in inaccurate weighings due to a lack of operator responsibility, thus affecting experiments. Furthermore, current weighing instruments typically only allow for the grasping and weighing of solids and cannot quantitatively absorb liquids, resulting in limited functionality. Utility Model Content
[0003] The purpose of this invention is to provide an automatic sample feeding and weighing device that can automatically weigh solids and absorb liquids.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows: an automatic sample feeding and weighing device, comprising a control unit, a moving unit, and a weighing unit. The control unit is used to control the moving unit and the weighing unit, and the moving unit is used to drive the weighing unit to rotate, move vertically, and move horizontally. The weighing unit includes a suction pump, a mounting block, a gripping clamp, and a sampling tube. The suction pump is connected to the moving unit, and the suction end of the suction pump is connected to the mounting block. The mounting block has a through hole, which communicates directly with the suction end. The gripping clamp and the sampling tube are detachably connected to the mounting block. The upper end of the sampling tube has a negative pressure port, which communicates directly with the through hole.
[0005] Furthermore, the gripping chuck includes a first mounting base and three sets of gripping structures. The three sets of gripping structures are evenly arranged on the first mounting base. Each set of gripping structures includes a gripping drive component, a drive claw, and a gripping claw. The two sides of the drive claw are respectively connected to the gripping drive component and the gripping claw. The gripping drive component is installed in the first mounting base and is connected to the control unit. The three sets of gripping claws are used to grip powdery samples.
[0006] Furthermore, a miniature weighing device is fixed to the top of the first mounting base, and the miniature weighing device can be detachably connected to the mounting block.
[0007] Furthermore, the sampling tube includes a second mounting base and a tube body, the second mounting base being detachably connected to the mounting block; the second mounting base is mounted on the top of the tube body, the negative pressure port is disposed on the second mounting base, and the upper and lower sides of the negative pressure port are respectively connected to the through hole and the inside of the tube body.
[0008] Furthermore, a liquid level sensor is provided inside the tube, and the liquid level sensor is connected to the control unit.
[0009] Furthermore, the moving unit includes a vertical moving component, a horizontal moving component, and a rotating component. The vertical moving component is mounted on the rotating component, the horizontal moving component is mounted on the vertical moving component, and the weighing unit is mounted on the horizontal moving component.
[0010] Furthermore, it also includes a conveying unit on which several sets of sampling containers are placed. The conveying unit is used to transport the empty sampling containers to the weighing unit and the sampling containers containing the samples to a designated location.
[0011] Furthermore, the conveying unit is provided with several sets of placement grooves, and the sampling container is placed in the placement grooves; the spacing between two adjacent sets of placement grooves is the same.
[0012] Furthermore, the control unit is used to control and set multiple positions of the clamping drive.
[0013] Furthermore, the mounting block is equipped with a height detection sensor, which is connected to the control unit; the height detection sensor is used to detect the distance between itself and the sample.
[0014] The working principle of this technical solution is as follows: The gripping chuck and sampling tube are changed according to the type of sample to be collected. The conveying unit transports the sampling container, stopping when it reaches the designated sampling position. Then, the lateral movement and rotation components drive the gripping chuck or sampling tube to move above the sample. Afterward, the vertical movement component is activated, lowering the gripping chuck or sampling tube. When using the gripping chuck, a height sensor detects the surface of the sample and its height; the vertical movement component stops when the designated height is reached. The gripping weight can be selected by adjusting the gripping level, and the total weight can be adjusted by changing the gripping level. When using the sampling tube, a height sensor detects the liquid level and its height; the vertical movement component stops when the designated height is reached. A suction pump then draws in the liquid sample into the tube. A liquid level sensor inside the tube detects the liquid level; the suction pump stops when the designated level is reached. Then, the horizontal moving component and the rotating component move the grasped powder sample or the aspirated liquid sample to above the sampling container. Then, the vertical moving component descends, the gripping chuck releases, or the aspirating pump discharges the liquid sample.
[0015] The beneficial effects of this technical solution are as follows:
[0016] ①This technical solution enables the conversion between the gripping chuck and the sampling tube by detachably connecting them to the mounting block, thus accommodating both powder and liquid samples.
[0017] ②This technical solution, by setting up a vertical moving component, a horizontal moving component, and a rotating component, enables the weighing unit to be moved vertically, horizontally, and rotated, thus allowing the position of the weighing unit to be adjusted.
[0018] ③ In this technical solution, by setting up a miniature weighing device, the gear position of the clamping drive component can be adjusted through testing.
[0019] ④ In this technical solution, a height detection sensor is set up to detect the distance between the sensor and the surface of the sample, which facilitates the adjustment of the height of the gripper and the sampling tube.
[0020] ⑤ In this technical solution, a liquid level sensor is installed to monitor the liquid level inside the pipe.
[0021] ⑥ This technical solution enables the automatic transfer of samples by setting up a transfer unit. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the automatic sample dispensing and weighing device of this utility model;
[0023] Figure 2 A schematic diagram of the gripper's structure;
[0024] Figure 3 This is a schematic diagram of the sampling tube. Detailed Implementation
[0025] The following detailed description illustrates the specific implementation method:
[0026] The reference numerals in the accompanying drawings include: rotating component 1, vertical moving component 2, horizontal moving component 3, suction pump 4, mounting block 5, control unit 6, conveying unit 7, placement groove 8, first mounting base 9, driving claw 10, gripping claw 11, tube body 12, second mounting base 13, and negative pressure port 14.
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] The basic implementation examples are as follows: Figure 1-3As shown: Automatic sample dispensing and weighing device, such as Figure 1 As shown, the system includes a control unit 6, a conveying unit 7, a moving unit, and a weighing unit. The control unit 6 controls the conveying unit 7, the moving unit, and the weighing unit. The moving unit drives the weighing unit to rotate, move vertically, and move horizontally. The moving unit includes a vertical moving component 2, a horizontal moving component 3, and a rotating component 1. The vertical moving component 2 is mounted on the rotating component 1, the horizontal moving component 3 is mounted on the vertical moving component 2, and the weighing unit is mounted on the horizontal moving component 3. The vertical moving component 2 and the horizontal moving component 3 use linear actuators, specifically cylinders, linear push rods, etc. The rotating component 1 can be a motor.
[0029] Several sets of sampling containers are placed on the conveying unit 7. The conveying unit 7 is used to transport empty sampling containers to the weighing unit and to transport sampling containers containing samples to a designated location. The control unit 6 is used to control the start, stop and speed of the conveying unit 7. The conveying unit 7 is provided with several sets of placement grooves 8, and the sampling containers are placed in the placement grooves 8; the spacing between two adjacent sets of placement grooves 8 is the same.
[0030] The weighing unit includes a suction pump 4, a mounting block 5, a gripping chuck, and a sampling tube. The suction pump 4 is connected to the moving unit, and the suction end of the suction pump 4 is connected to the mounting block 5. The mounting block 5 has a through hole that is directly connected to the suction end. The gripping chuck and the sampling tube can be detachably connected to the mounting block 5. The upper end of the sampling tube has a negative pressure port 14 that is directly connected to the through hole.
[0031] like Figure 2 As shown, the gripper includes a first mounting base 9 and three sets of gripping structures. The three sets of gripping structures are evenly arranged on the lower side of the first mounting base 9. Each set of gripping structures includes a gripping drive component, a drive claw 10, and a gripping claw 11. The two sides of the drive claw 10 are connected to the gripping drive component and the gripping claw 11, respectively. The gripping drive component is installed inside the first mounting base 9 and is connected to the control unit 6. The gripping drive component drives the gripping claws 11 to move away from or closer together via the drive claws 10. The three sets of gripping claws 11 are used to grip powdery samples. The gripping drive component can be a linear actuator. A miniature weighing device is fixed to the top of the first mounting base 9. The miniature weighing device can be detachably connected to the mounting block 5. Specifically, a mounting plate can be fixed to the top of the miniature weighing device, and the mounting plate is connected to the mounting block 5 by bolts. The control unit 6 is used to control and set multiple positions of the gripping drive component.
[0032] like Figure 3As shown, the sampling tube includes a second mounting base 13 and a tube body 12. The second mounting base 13 is detachably connected to the mounting block 5, specifically via bolts. The second mounting base 13 is mounted on the top of the tube body 12. A negative pressure port 14 is located on the second mounting base 13, and its upper and lower sides communicate with a through hole and the interior of the tube body 12, respectively. A liquid level sensor is installed inside the tube body 12, and the liquid level sensor is connected to the control unit 6. The tube body 12 has graduation lines.
[0033] Mounting block 5 is equipped with a height detection sensor, which is connected to control unit 6; the height detection sensor is used to detect the distance between itself and the sample.
[0034] The specific implementation process is as follows:
[0035] The gripping chuck and sampling tube are changed according to the type of sample to be collected. The conveying unit 7 conveys the sampling container, and stops conveying when it reaches the designated sampling position. Then, the horizontal moving component 3 and the rotating component 1 drive the gripping chuck or sampling tube to move above the sample. After that, the vertical moving component 2 is activated, and the vertical moving unit drives the gripping chuck or sampling tube to descend. When using the gripping chuck, the height detection sensor detects the surface of the sample and its height. When the designated height is reached, the vertical moving component 2 stops. The gripping level can be selected by the weight of the sample, and the total weight can be gripped by changing the level. When using the sampling tube, the height detection sensor detects the liquid level and its height. When the designated height is reached, the vertical moving component 2 stops. The suction pump 4 suctions the liquid sample into the tube body 12. The liquid level sensor in the tube body 12 detects the liquid level. When the designated liquid level is reached, the suction pump 4 stops. Then, the horizontal moving component 3 and the rotating component 1 move the grasped powder sample or the sucked liquid sample to the top of the sampling container. Then, the vertical moving component 2 descends, the gripping chuck releases, or the suction pump 4 discharges the liquid sample.
[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0037] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. An automatic sample dispensing and weighing device, characterized in that: The device includes a control unit, a moving unit, and a weighing unit. The control unit controls the moving unit and the weighing unit. The moving unit drives the weighing unit to rotate, move vertically, and move laterally. The weighing unit includes a suction pump, a mounting block, a gripping chuck, and a sampling tube. The suction pump is connected to the moving unit, and its suction end is connected to the mounting block. The mounting block has a through hole that communicates with the suction end. The gripping chuck and the sampling tube are detachably connected to the mounting block. The upper end of the sampling tube has a negative pressure port that communicates with the through hole.
2. The automatic sample dispensing and weighing device according to claim 1, characterized in that: The gripping chuck includes a first mounting base and three sets of gripping structures. The three sets of gripping structures are evenly arranged on the first mounting base. Each set of gripping structures includes a gripping drive component, a drive claw, and a gripping claw. The two sides of the drive claw are connected to the gripping drive component and the gripping claw, respectively. The gripping drive component is installed in the first mounting base and is connected to the control unit. The three sets of gripping claws are used to grip powdery samples.
3. The automatic sample dispensing and weighing device according to claim 2, characterized in that: A miniature weighing device is fixed to the top of the first mounting base, and the miniature weighing device can be detachably connected to the mounting block.
4. The automatic sample dispensing and weighing device according to claim 1, characterized in that: The sampling tube includes a second mounting base and a tube body. The second mounting base is detachably connected to the mounting block. The second mounting base is installed on the top of the tube body. The negative pressure port is located on the second mounting base. The upper and lower sides of the negative pressure port are respectively connected to the through hole and the inside of the tube body.
5. The automatic sample dispensing and weighing device according to claim 4, characterized in that: A liquid level sensor is installed inside the tube, and the liquid level sensor is connected to the control unit.
6. The automatic sample dispensing and weighing device according to claim 1, characterized in that: The moving unit includes a vertical moving component, a horizontal moving component, and a rotating component. The vertical moving component is mounted on the rotating component, the horizontal moving component is mounted on the vertical moving component, and the weighing unit is mounted on the horizontal moving component.
7. The automatic sample dispensing and weighing device according to claim 1, characterized in that: It also includes a conveying unit on which several sets of sampling containers are placed. The conveying unit is used to transport the empty sampling containers to the weighing unit and the sampling containers containing the samples to a designated location.
8. The automatic sample dispensing and weighing device according to claim 7, characterized in that: The conveying unit is provided with several sets of placement grooves, and the sampling container is placed in the placement grooves; the spacing between two adjacent sets of placement grooves is the same.
9. The automatic sample dispensing and weighing device according to claim 2, characterized in that: The control unit is used to control and set multiple gear positions of the clamping drive.
10. The automatic sample dispensing and weighing device according to claim 1, characterized in that: The mounting block is equipped with a height detection sensor, which is connected to the control unit; the height detection sensor is used to detect the distance between itself and the sample.