Precise instrument for automatic weighing and preparation of standard solutions and standard series

Abstract

The utility model discloses a precise instrument for automatic weighing and preparation of standard solutions and standard series, relates to the technical field of standard solution preparation, and provides the following scheme: the precise instrument comprises a device base and a preparation mechanism arranged above the device base, and the preparation mechanism comprises an adjusting assembly and a preparation assembly; the adjusting assembly comprises a driving motor, a driving belt wheel, a transmission belt, a driven belt wheel, a half gear, a rotating gear, a mounting base, a mounting groove, a limiting spring, a limiting ball, a weighing mounting base, a bottom clamping rod and a positioning groove, the driving motor is fixedly mounted in the device base, and the driving belt wheel is mounted at the output end of the driving motor; a plurality of groups of preparation containers are arranged above a weighing mounting seat in an array distribution manner, so that a rotating gear can conveniently drive the weighing mounting seat to rotate so as to adjust the positions of the preparation containers at the bottom of a preparation opening, and the preparation containers are sequentially rotated, so that the preparation opening can more conveniently prepare a solution according to the concentration gradient.

Description

Technical Field

[0001] This utility model relates to the field of standard solution preparation technology, and in particular to a precision instrument for automatic weighing and preparation of standard solutions and standard series. Background Technology

[0002] In fields such as chemical analysis, environmental monitoring, and food and drug testing, the preparation of standard solutions and standard series is a crucial step in the experimental process, and its accuracy directly affects the reliability of the test results.

[0003] Most existing standard solutions are prepared by manual sampling, which requires manual adjustment of the positions of containers for solutions of different concentrations, making the operation too complicated. Therefore, a precision instrument for automatic weighing and preparation of standard solutions and standard series is needed. Utility Model Content

[0004] The purpose of this invention is to provide a precision instrument for the automatic weighing and preparation of standard solutions and standard series, which solves the problem that the preparation of standard solutions in the prior art is mostly carried out by manual sampling, and at the same time, it requires manual adjustment of the position of the container of solution of different concentrations, which is too complicated to operate.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a precision instrument for automatic weighing and preparation of standard solutions and standard series, comprising a device base and a preparation mechanism mounted on the device base, wherein the preparation mechanism includes an adjustment component and a preparation component;

[0006] The adjustment assembly includes a drive motor, a drive pulley, a transmission belt, a driven pulley, a half gear, a rotating gear, a mounting base, a mounting groove, a limit spring, a limit ball, a weighing mounting seat, a bottom locking rod, and a positioning groove. The drive motor is fixedly installed inside the device base. The output end of the drive motor is fitted with a drive pulley. A transmission belt is installed outside the drive pulley. A driven pulley is installed in front of the transmission belt. A coaxial half gear is installed on the top of the driven pulley. A rotating gear meshes with the right side of the half gear. A mounting base is fixedly installed on the top of the rotating gear. A mounting groove is formed on the top of the mounting base. A limit spring is fixedly installed on the inner wall of the mounting groove. A limit ball is fixedly installed on the side of the limit spring. A weighing mounting seat is installed parallel to the top of the mounting base. A bottom locking rod matching the size of the mounting groove is installed at the bottom of the weighing mounting seat. Positioning grooves are arrayed on the side of the bottom locking rod.

[0007] The preparation assembly includes a placement slot, a preparation container, a preparation port, a pump body, a liquid guide tube, a first liquid bottle, and a second liquid bottle. The weighing mounting base has a placement slot inside, and the preparation container is installed inside the placement slot. A preparation port is installed on the upper part of the device base at a position corresponding to the preparation container. The pump body is fixedly installed inside the preparation port. A liquid guide tube is installed on the top of the pump body. One side of the liquid guide tube is connected to the first liquid bottle, and the other side of the liquid guide tube is connected to the second liquid bottle.

[0008] Preferably, the driven pulley forms a transmission structure with the drive motor through the cooperation between the transmission belt and the driving pulley, and the half gear forms a rotation structure through the driven pulley.

[0009] Preferably, the mounting base forms a rotating structure through the cooperation between a rotating gear and a half gear, and the rotating gear is fixed to the mounting base.

[0010] Preferably, the weighing mounting base forms a detachable structure with the mounting base through the cooperation between the bottom locking rod and the mounting groove; the bottom locking rod forms a locking structure with the mounting groove through the cooperation between the positioning groove and the limiting ball; and the limiting ball forms an elastic pressing structure with the mounting base through the limiting spring.

[0011] Preferably, the preparation container has a detachable structure between the placement slot and the weighing mounting base.

[0012] Preferably, the first liquid bottle and the pump body form a flow structure through a liquid guide tube, and the second liquid bottle and the pump body form a flow structure through a liquid guide tube, but there is no flow between the first liquid bottle and the second liquid bottle through a liquid guide tube.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By setting up an array of multiple preparation containers above the weighing mounting base, it is convenient to rotate the gear to drive the weighing mounting base to rotate, thereby adjusting the position of the preparation container at the bottom of the preparation port. Furthermore, rotating the preparation containers in sequence makes it easier to prepare solutions according to the concentration gradient at the preparation port.

[0015] The system includes a first and a second liquid-containing bottle. A pump inside the preparation port draws the solution from the first and second liquid-containing bottles into the preparation port and then into the preparation container to prepare the standard solution. Multiple preparation containers are available to dilute the solution according to a concentration gradient, thus preparing a standard series gradient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a precision instrument for automatic weighing and preparation of standard solutions and standard series proposed in this utility model.

[0017] Figure 2 This is a schematic cross-sectional view of the overall structure of a precision instrument for automatic weighing and preparation of standard solutions and standard series proposed in this utility model.

[0018] Figure 3 This is a cross-sectional view of the base of a precision instrument for automatic weighing and preparation of standard solutions and standard series, as proposed in this utility model.

[0019] Figure 4 This is a cross-sectional view of the mounting base of a precision instrument for automatic weighing and preparation of standard solutions and standard series, as proposed in this utility model.

[0020] Figure 5 This is a schematic diagram of the liquid-holding bottle installation structure of a precision instrument for automatic weighing and preparation of standard solutions and standard series, as proposed in this utility model.

[0021] In the diagram: 1. Device base; 2. Drive motor; 3. Drive pulley; 4. Transmission belt; 5. Driven pulley; 6. Half gear; 7. Rotating gear; 8. Mounting base; 9. Mounting groove; 10. Limiting spring; 11. Limiting ball; 12. Weighing mounting seat; 13. Bottom locking rod; 14. Positioning groove; 15. Placement groove; 16. Preparation container; 17. Preparation port; 18. Pump body; 19. Liquid guide tube; 20. First liquid bottle; 21. Second liquid bottle. Detailed Implementation

[0022] 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.

[0023] Example 1

[0024] like Figures 1-5 As shown in the figure, a precision instrument for automatic weighing and preparation of standard solutions and standard series includes a device base 1 and a preparation mechanism mounted on the device base 1. The preparation mechanism includes an adjustment component and a preparation component.

[0025] The adjustment assembly includes a drive motor 2, a drive pulley 3, a transmission belt 4, a driven pulley 5, a half gear 6, a rotating gear 7, a mounting base 8, a mounting groove 9, a limit spring 10, a limit ball 11, a weighing mounting seat 12, a bottom locking rod 13, and a positioning groove 14. The drive motor 2 is fixedly installed inside the base 1. The drive pulley 3 is installed at the output end of the drive motor 2. The transmission belt 4 is installed outside the drive pulley 3. The driven pulley 5 is installed in front of the transmission belt 4. A corresponding locking rod is installed on the top of the driven pulley 5. A half gear 6 is attached to the shaft. A rotating gear 7 is meshed on the right side of the half gear 6. A mounting base 8 is fixedly mounted on the top of the rotating gear 7. A mounting groove 9 is provided above the mounting base 8. A limit spring 10 is fixedly mounted on the inner wall of the mounting groove 9. A limit ball 11 is fixedly mounted on the side of the limit spring 10. A weighing mounting seat 12 is mounted parallel above the mounting base 8. A bottom locking rod 13 that matches the size of the mounting groove 9 is installed at the bottom of the weighing mounting seat 12. Positioning grooves 14 are arrayed on the side of the bottom locking rod 13.

[0026] The preparation assembly includes a placement slot 15, a preparation container 16, a preparation port 17, a pump body 18, a liquid guide tube 19, a first liquid bottle 20, and a second liquid bottle 21. The weighing mounting base 12 has a placement slot 15 inside, and the preparation container 16 is installed inside the placement slot 15. The preparation port 17 is installed on the upper part of the device base 1 at a position corresponding to the preparation container 16. The pump body 18 is fixedly installed inside the preparation port 17. The liquid guide tube 19 is installed on the top of the pump body 18. One side of the liquid guide tube 19 is connected to the first liquid bottle 20, and the other side of the liquid guide tube 19 is connected to the second liquid bottle 21.

[0027] The driven pulley 5, through the engagement of the transmission belt 4 and the driving pulley 3, forms a transmission structure with the drive motor 2. The half gear 6 forms a rotating structure through the driven pulley 5. In use, the drive motor 2 drives the driving pulley 3 to rotate inside the device. Then, the driving pulley 3 drives the driven pulley 5 to rotate synchronously through the transmission belt 4 in front. Since the half gear 6 and the driven pulley 5 are coaxial, the half gear 6 will be driven by the driven pulley 5 below to rotate synchronously, thereby driving the top mounting base 8 to rotate.

[0028] The mounting base 8 forms a rotating structure through the engagement of the rotating gear 7 and the half gear 6. The rotating gear 7 and the mounting base 8 are fixed to each other. Since the rotating gear 7 and the half gear 6 mesh with each other, the half gear 6 will drive the rotating gear 7 on the side to rotate inside the device when it rotates. Therefore, the rotating gear 7 will only be driven to rotate a circle with the same circumference as the half gear 6. This allows the top dispensing containers 16 to be rotated one by one above the weighing mounting base 12 to the dispensing port 17 for dispensing, improving the flexibility of the device.

[0029] The weighing mounting base 12 forms a detachable structure with the mounting base 8 through the cooperation between the bottom locking rod 13 and the mounting groove 9. The bottom locking rod 13 forms a locking structure with the mounting groove 9 through the cooperation between the positioning groove 14 and the limiting ball 11. The limiting ball 11 forms an elastic pressing structure with the mounting base 8 through the limiting spring 10. During use, the weighing mounting base 12 is installed by inserting the bottom locking rod 13 into the mounting groove 9. During the installation process, the bottom locking rod 13 first enters the mounting groove 9. At this time, the bottom locking rod 13 will squeeze the limiting ball 11 in the mounting groove 9. Under the elastic action of the limiting spring 10, the limiting ball 11 retracts backward. At the same time, the bottom locking rod 13 continues to move downward. When the bottom locking rod 13 enters the bottom of the mounting groove 9, the limiting ball 11 returns to its original position under the elastic action of the limiting spring 10. The limiting ball 11 enters the positioning groove 14 to fix the bottom locking rod 13, thereby improving the stability of the weighing mounting base 12 during the installation process.

[0030] Example 2

[0031] like Figure 2 and Figure 5 As shown, this embodiment further illustrates Example 1. The preparation container 16 forms a detachable structure with the placement groove 15 and the weighing mounting base 12. During use, the preparation container 16 can be placed inside the weighing mounting base 12, and multiple sets of preparation containers 16 can be placed inside the weighing mounting base 12 to facilitate standard dilution and preparation of the solution inside the preparation container 16.

[0032] The first liquid bottle 20 and the pump body 18 form a flow structure through the liquid guide tube 19, and the second liquid bottle 21 and the pump body 18 form a flow structure through the liquid guide tube 19. The first liquid bottle 20 and the second liquid bottle 21 do not flow through the liquid guide tube 19. During use, the first liquid bottle 20 and the second liquid bottle 21 can be placed inside the device base 1. Then, the solution in the first liquid bottle 20 and the second liquid bottle 21 is drawn into the preparation port 17 through the pump body 18 inside the preparation port 17 and introduced into the preparation container 16 to prepare the standard solution. There are multiple preparation containers 16, which can be diluted according to the concentration gradient to prepare a standard series gradient.

[0033] In use: The weighing mounting base 12 is installed by inserting the bottom locking rod 13 into the mounting groove 9. During installation, the bottom locking rod 13 first enters the mounting groove 9, at which point it presses against the limiting ball 11 inside the mounting groove 9. Under the elastic action of the limiting spring 10, the limiting ball 11 retracts backward, while the bottom locking rod 13 continues downward. Once the bottom locking rod 13 reaches the bottom of the mounting groove 9, the limiting ball 11 returns to its original position under the elastic action of the limiting spring 10, and enters the positioning groove 14 to fix the bottom locking rod 13, improving the stability of the weighing mounting base 12 during installation. Then, the drive motor 2 drives the driving pulley 3 to rotate inside the device. The driving pulley 3 then drives the driven pulley 5 to rotate synchronously through the front transmission belt 4, and the half gear 6 and the driven pulley 5 are coaxial. Therefore, the half gear 6 will be driven by the driven pulley 5 below to rotate synchronously. When the half gear 6 rotates, it will drive the rotating gear 7 on the side to rotate inside the device. Therefore, the rotating gear 7 will only be driven to rotate a circle with the same circumference as the half gear 6. This allows the top preparation container 16 to be rotated one by one above the weighing mounting base 12 to the preparation port 17 for preparation, improving the flexibility of the device. Finally, the first liquid bottle 20 and the second liquid bottle 21 can be placed inside the device base 1. Then, the solution in the first liquid bottle 20 and the second liquid bottle 21 is drawn into the preparation port 17 by the pump 18 inside the preparation port 17 and introduced into the preparation container 16 to prepare the standard solution. Multiple preparation containers 16 can be prepared according to the concentration gradient to prepare a standard series gradient.

[0034] 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.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision instrument for automatic weighing and preparation of standard solutions and standard series, comprising a device base (1) and a preparation mechanism mounted above the device base (1), characterized in that: The preparation mechanism comprises an adjusting assembly and a preparation assembly; The adjusting assembly comprises a driving motor (2), a driving pulley (3), a transmission belt (4), a driven pulley (5), a half gear (6), a rotating gear (7), a mounting base (8), a mounting groove (9), a limiting spring (10), a limiting ball (11), a weighing mounting seat (12), a bottom clamping rod (13) and a positioning groove (14), the inside of the device base (1) is fixedly installed with the driving motor (2), the output end of the driving motor (2) is installed with the driving pulley (3), the outside of the driving pulley (3) is installed with the transmission belt (4), the front of the transmission belt (4) is installed with the driven pulley (5), the top of the driven pulley (5) is installed with the coaxial half gear (6), the right side of the half gear (6) is meshedly installed with the rotating gear (7), the top of the rotating gear (7) is fixedly installed with the mounting base (8), the upper portion of the mounting base (8) is provided with the mounting groove (9), the inner wall of the mounting groove (9) is fixedly installed with the limiting spring (10), the side of the limiting spring (10) is fixedly installed with the limiting ball (11), the upper portion of the mounting base (8) is installed in parallel with the weighing mounting seat (12), the bottom of the weighing mounting seat (12) is installed with the bottom clamping rod (13) which is consistent in size with the mounting groove (9), the side of the bottom clamping rod (13) is arrayed with the positioning groove (14). The preparation assembly comprises a placing groove (15), a preparation container (16), a preparation port (17), a pump body (18), a liquid guide pipe (19), a first liquid containing bottle (20) and a second liquid containing bottle (21), the inside of the weighing mounting seat (12) is provided with the placing groove (15), the inside of the placing groove (15) is installed with the preparation container (16), the upper portion of the device base (1) is installed with the preparation port (17) at the position corresponding to the preparation container (16), the inside of the preparation port (17) is fixedly installed with the pump body (18), the top of the pump body (18) is flow-connectedly installed with the liquid guide pipe (19), one side of the liquid guide pipe (19) is flow-connectedly installed with the first liquid containing bottle (20), the other side of the liquid guide pipe (19) is flow-connectedly installed with the second liquid containing bottle (21).

2. A precision instrument for automatic weighing and preparation of standard solutions and standard series according to claim 1, characterized in that: The driven pulley (5) and the driving motor (2) constitute a transmission structure through the cooperation between the transmission belt (4) and the driving pulley (3), and the half gear (6) constitutes a rotating structure through the driven pulley (5).

3. A precision instrument for automatic weighing and preparation of standard solutions and standard series as claimed in claim 1, wherein: The mounting base (8) constitutes a rotating structure through the cooperation between the rotating gear (7) and the half gear (6), and the rotating gear (7) and the mounting base (8) are fixedly connected with each other.

4. The precision instrument for automatic weighing and preparation of standard solutions and standard series according to claim 1, characterized in that: The weighing mounting seat (12) and the mounting base (8) constitute a detachable structure through the cooperation between the bottom clamping rod (13) and the mounting groove (9), the bottom clamping rod (13) and the mounting groove (9) constitute a clamping structure through the cooperation between the positioning groove (14) and the limiting ball (11), and the limiting ball (11) and the mounting base (8) constitute an elastic pressing structure through the limiting spring (10).

5. The precision instrument for automatic weighing and preparation of standard solutions and standard series according to claim 1, characterized in that: The dispensing container (16) is detachably connected between the placing groove (15) and the weighing mounting base (12).

6. A precision instrument for automatic weighing and preparation of standard solutions and standard series as claimed in claim 1, wherein: The first liquid container (20) is in flow communication with the pump body (18) through the liquid guide pipe (19), and the second liquid container (21) is in flow communication with the pump body (18) through the liquid guide pipe (19), and the first liquid container (20) and the second liquid container (21) are not in flow communication through the liquid guide pipe (19).

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