A chemical reagent sampler

Abstract

The utility model relates to sampling technical field, concretely is a kind of chemical reagent sampler. The top of the sampling tube is provided with a convex eave, the scale area is longitudinally arranged along the outer wall of sampling tube, and the guide rail is longitudinally protrudingly arranged on the outer wall of sampling tube;The hoop is slidably sleeved on the outer wall of sampling tube, and there is a sliding groove matched with the guide rail;Fastening knob is threadedly connected with the hoop and can contact with the guide rail by passing through the hoop;Operating rod is inserted into sampling tube by sampling tube port, and the outer end is provided with a disc, and the inner end is provided with a piston matched with the inner wall of sampling tube;The connecting plate is fixed on the top of hoop and extends upwards through the convex eave;U-shaped claw is vertically fixed on the top end of connecting plate.The utility model can complete the sampling observation of conventional incremental type, and through adjusting hoop, under the cooperation of U-shaped claw and operating rod outer end disc, the moving distance of operating rod during titration is accurately limited, the volume height of reagent flowing out during each titration is accurate, and the accuracy and reliability of experimental result are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of sampling technology, specifically a chemical reagent sampler. Background Technology

[0002] In chemical experiments and testing, sampling and titration are two crucial operational steps, and the accuracy of these steps directly affects the accuracy and reliability of the experimental results. Traditional chemical reagent sampling typically uses tools such as pipettes and graduated cylinders. However, these tools suffer from problems such as unintuitive readings and cumbersome procedures, making it difficult to quickly and accurately obtain the required volume of chemical reagent sample. Furthermore, the accumulation of errors becomes significant when sampling multiple times.

[0003] In the titration stage, existing samplers often rely on the operator's experience and feel to control the reagent titration volume, lacking precise scale references and stable operating structures. Common sampler adjustment components are inconvenient to operate, difficult to quickly adjust their position, and prone to shaking and shifting during adjustment. This results in inconsistent reagent volumes during each titration, with frequent instances of too many or too few drops, severely impacting the accuracy and repeatability of experimental data, and consequently hindering the efficient conduct of chemical experimental research and quality control. Utility Model Content

[0004] The purpose of this invention is to design a chemical reagent sampler that is easy to operate and accurately guarantees the amount of reagent to be dispensed.

[0005] This utility model includes:

[0006] The sampling tube has a raised edge at its top;

[0007] The graduation area is set longitudinally along the outer wall of the sampling tube;

[0008] The guide rail protrudes longitudinally from the outer wall of the sampling tube and is installed on the outer wall of the sampling tube.

[0009] The hoop is slidably fitted onto the outside of the sampling tube and has a groove that mates with the guide rail;

[0010] The fastening knob is threaded to the clamp ring and passes through the clamp ring to contact the guide rail;

[0011] The operating lever extends into the sampling tube from the sampling tube port, with a disc at its outer end and a piston at its inner end that mates with the inner wall of the sampling tube.

[0012] A connecting plate is fixed to the top of the hoop and extends upward through the eaves;

[0013] The U-shaped claw is vertically fixed to the top of the connecting plate, and its U-shaped groove is located on both sides of the operating rod and below the disc.

[0014] Furthermore, the zero mark of the first scale area is located at the bottom, and the zero mark of the second scale area is located at the top.

[0015] Furthermore, the cross-section of the guide rail is dovetail-shaped or T-shaped.

[0016] Furthermore, the connecting plate and the hoop are connected by welding.

[0017] Furthermore, the fastening knob is a wing nut or a wing screw.

[0018] Furthermore, the inner surface of the hoop is provided with grooves corresponding to the positions of the first and second scale areas.

[0019] Furthermore, the cross-section of the guide rail is dovetail-shaped or T-shaped; the connecting plate and the hoop are connected by welding; the top of the operating rod of the sampling tube is provided with a disc, and the disc is covered with a U-shaped claw; the fastening knob is a wing nut or a wing screw; the inner surface of the hoop is provided with grooves corresponding to the positions of the first and second scale areas.

[0020] The beneficial effects of this utility model are as follows: This utility model observes the reagent metering of the sampling tube through the first scale area, and then positions the titration metering by adjusting the hoop ring through the adjacent second scale area. When in use, after the U-shaped claw abuts against the top disc of the operating rod of the sampling tube, the movement distance of the operating rod during titration can be precisely limited, ensuring that the volume of reagent flowing out during each titration is highly accurate, effectively avoiding the phenomenon of too many or too few drops, improving experimental efficiency, and ensuring the accuracy and reliability of experimental results. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a frontal full-section structural diagram of the present invention (the sampling head is not sectioned).

[0023] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0024] Figure 4 This is a top view of the hoop structure in this utility model;

[0025] The components are as follows: 1. Sampling tube; 2. First scale area; 3. Second scale area; 4. Guide rail; 5. Hoop ring; 6. Fastening knob; 7. Connecting plate; 8. U-shaped claw; 9. Disc; 10. Operating lever; 11. Protruding eaves; 12. Piston; 13. Slide groove; 14. Groove; 15. Screw; 16. Sampling head. Detailed Implementation

[0026] Unless otherwise specified, in this utility model, the inner end and outer end described in this embodiment are defined as the inside and outside of the sampling tube 1, respectively; the inner side of this embodiment is defined as the side closer to the center of the hoop 5, and the outer side of this embodiment is defined as the side farther from the center of the hoop 5. Figure 2 The vertical direction is defined as shown in this embodiment.

[0027] As shown in the figure, this embodiment includes a sampling tube 1, a scale area, a guide rail 4, a clamping ring 5, a fastening knob 6, an operating lever 10, a connecting plate 7, and a U-shaped claw 8. Wherein:

[0028] Sampling tube 1, with a protruding eave 11 at its top;

[0029] The graduation area is set longitudinally along the outer wall of sampling tube 1;

[0030] Guide rail 4 is longitudinally protruding from the outer wall of sampling tube 1;

[0031] The hoop 5 is slidably fitted onto the outside of the sampling tube 1 and has a groove 13 that mates with the guide rail 4;

[0032] The fastening knob 6 is threaded to the clamp ring 5 and passes through the clamp ring 5 to contact the guide rail 4;

[0033] The operating lever 10 extends into the sampling tube 1 from the port of the sampling tube 1. A disc 9 is provided at its outer end, and a piston 12 that cooperates with the inner wall of the sampling tube 1 is provided at its inner end.

[0034] The connecting plate 7 is fixed to the top of the hoop 5 and extends upward through the eaves 11;

[0035] The U-shaped claw 8 is vertically fixed to the top of the connecting plate 7, and its U-shaped groove is located on both sides of the operating rod 10 and below the disc 9.

[0036] In this embodiment, the sampling tube 1 is cylindrical, with a sampling head 16 at the lower end. The upper opening of its inner cavity mates with the operating rod 10, and the inner diameter mates with the piston 12 at the lower end of the operating rod 10. The top of the sampling tube 1 has a raised edge 11 with a through hole that mates with the connecting plate 7. The sampling tube 1 serves as the basic supporting component of the overall structure, used to contain and transfer chemical reagents. The scale area includes a first scale area 2 and a second scale area 3, respectively arranged longitudinally along the outer wall of the sampling tube and on both sides of the guide rail 4, facilitating observation of the scale when adjusting the clamping ring. The zero mark of the first scale area 2 is located at the bottom, and the zero mark of the second scale area 3 is located at the top. The first scale area 2 allows the operator to read the reagent volume from bottom to top, suitable for conventional incremental sampling observation. The second scale area 3 can meet the special needs of reading the reagent volume from top to bottom in different experimental scenarios, i.e., adjusting the titration amount.

[0037] The guide rail 4 protrudes longitudinally from the outer wall of the sampling tube 1. The cross-section of the guide rail 4 is dovetail-shaped or T-shaped, providing a stable sliding track for the hoop 5 and ensuring that the hoop 5 will not shift or fall off during movement. The inner surface of the hoop 5 has a groove 13 that mates with the guide rail 4. The hoop 5 is fitted onto the outside of the sampling tube 1, with its groove 13 engaging with the guide rail 4. Furthermore, the inner surface of the hoop 5 has a groove 14 corresponding to the positions of the first scale area 2 and the second scale area 3. The groove 14 is located inside the groove 13 to prevent wear on the scale areas when adjusting the hoop 5.

[0038] The groove 13 on the hoop 5 has a threaded through hole on the outer side of the circumferential center. The threaded through hole is fitted with a fastening knob 6. The fastening knob 6 is a wing nut or a wing screw, which is threaded to the hoop 5. The design of the wing nut or wing screw makes it convenient for users to quickly loosen or tighten it. It is used to lock the relative position of the hoop 5 and the guide rail 4, so that the hoop 5 remains stable in the set position.

[0039] In this embodiment, the connecting plate 7 and the hoop 5 are connected by welding. The lower inner side of the connecting plate 7 has an inverted L-shaped stepped surface. The connecting plate 7 passes through the through hole left on the eaves 11 of the sampling tube, and its stepped surface overlaps and is welded to the top and side of the hoop 5. To save resources, achieve reuse, and facilitate installation, threaded holes can be opened at the overlapping joint between the connecting plate 7 and the side of the hoop 5, that is, threaded holes can also be opened at the opposite position on the side of the hoop 5. The connecting plate 7 and the hoop 5 are fixedly connected by screws 15.

[0040] A U-shaped claw 8 is welded and fixed to the top of the connecting plate 7. The U-shaped claw 8 is perpendicular to the connecting plate 7 and located below the disc of the operating rod 10. The U-shaped claw 8 has a U-shaped groove on one side relative to the operating rod 10. The U-shaped groove is located on both sides of the operating rod 10, so that the operating rod 10 is engaged in the U-shaped groove.

[0041] In this embodiment, during the sampling stage, the operating lever 10 is pulled first to draw the chemical reagent to be tested into the sampling tube 1 using the internal negative pressure. The reagent volume is read from bottom to top by observing the first scale area 2, thus completing the conventional incremental sampling observation and obtaining the accurate volume of chemical reagent.

[0042] Upon entering the titration stage, first loosen the fastening knob 6 on the hoop 5. After loosening, the hoop 5 is released from its locked state. Slide the hoop 5 along the guide rail 4. The hoop 5 drives the connecting plate 7 and simultaneously moves the U-shaped claw 8 synchronously, so that the U-shaped claw 8 abuts against the disc 9 at the top of the operating rod of the sampling tube 1. By observing the second scale area 3, control the downward movement of the U-shaped claw 8. Adjust it to the appropriate position and tighten the fastening knob 6 to precisely limit the movement distance of the operating rod during titration. This ensures that the volume of reagent flowing out during each titration is highly accurate, effectively avoiding the phenomenon of too much or too little dripping, improving experimental efficiency, and ensuring the accuracy and reliability of experimental results.

Claims

1. A chemical reagent sampler, characterized in that, include: The sampling tube (1) has a raised edge (11) at its top. The graduation area is set longitudinally along the outer wall of the sampling tube (1); The guide rail (4) is longitudinally protruding from the outer wall of the sampling tube (1); The hoop (5) is slidably fitted outside the sampling tube (1) and has a groove (13) that cooperates with the guide rail (4). The fastening knob (6) is threaded to the hoop (5) and passes through the hoop (5) to contact the guide rail (4); The operating lever (10) extends into the sampling tube (1) from the sampling tube port. A disc (9) is provided at its outer end, and a piston (12) that cooperates with the inner wall of the sampling tube (1) is provided at its inner end. The connecting plate (7) is fixed to the top of the hoop (5) and extends upward through the eaves (11); The U-shaped claw (8) is vertically fixed to the top of the connecting plate (7), and its U-shaped groove is located on both sides of the operating rod (10) and below the disc (9).

2. A chemical reagent sampler according to claim 1, characterized in that: The zero mark of the first scale area (2) is located at the bottom, and the zero mark of the second scale area (3) is located at the top.

3. A chemical reagent sampler according to claim 1 or 2, characterized in that: The cross-section of the guide rail (4) is dovetail-shaped or T-shaped.

4. A chemical reagent sampler according to claim 1 or 2, characterized in that: The connecting plate (7) and the hoop (5) are connected by welding.

5. A chemical reagent sampler according to claim 1 or 2, characterized in that: The fastening knob (6) is a wing nut or a wing screw.

6. A chemical reagent sampler according to claim 1 or 2, characterized in that: The inner surface of the hoop (5) is provided with grooves corresponding to the positions of the first scale area (2) and the second scale area (3).

7. A chemical reagent sampler according to claim 1 or 2, characterized in that: The cross-section of the guide rail (4) is dovetail-shaped or T-shaped; the connecting plate (7) and the hoop (5) are connected by welding; the top of the operating rod (10) of the sampling tube (1) is provided with a disc (9), and the disc (9) is covered with a U-shaped claw (8); the fastening knob (6) is a wing nut or a wing screw; the inner surface of the hoop (5) is provided with a groove (14) corresponding to the position of the first scale area (2) and the second scale area (3).

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