Metering, detecting and sampling device

Abstract

A metering detection sampling device comprises a sampling barrel used for sampling, a sampling opening formed in the middle of the bottom end of the sampling barrel, a piston installed on the inner side of the sampling barrel, a piston rod installed at the top end of the piston and a handle installed at the top end of the piston rod, and further comprises a positioning assembly, and the positioning assembly is arranged on the outer side of the sampling barrel; the positioning assembly comprises arc-shaped blocks, external threads, a positioning barrel, anti-skid lines, internal threads, scale marks and limiting blocks, the arc-shaped blocks are symmetrically arranged on the sampling barrel, the external threads are formed in the outer sides of the arc-shaped blocks, the positioning barrel is connected to the arc-shaped blocks in a screwed mode, and the scale marks are arranged on the portion, located between the arc-shaped blocks, of the sampling barrel. When the sampling liquid is discharged for detection, positioning can be carried out, manual observation is not needed, errors caused by manual observation are avoided, and the accuracy is high.

Description

Technical Field

[0001] The utility model relates to a sampling device, in particular to a measurement and detection sampling device. Background Art

[0002] Before using an unknown liquid, it is necessary to test the internal components of the liquid to avoid harm caused by improper operation during use, thereby ensuring the safe use of the liquid. During the liquid testing process, it is necessary to quantitatively extract the liquid sample in the reagent bottle.

[0003] Most traditional sampling devices use reagent bottles with scales to perform quantitative testing on samples; existing metering and testing sampling devices generally extract samples into a transfer cylinder, which is then pushed into the bottle to be tested. During the pushing process, it is necessary to manually observe the scale of the cylinder to confirm the added test liquid. Manual observation and human subjectivity affect the accuracy of liquid addition, which is not conducive to use. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a metering and testing sampling device, which effectively solves the problem that the existing metering and testing sampling device is generally extracted into a transfer cylinder, and then pushed into the bottle to be tested by the transfer cylinder. When pushing, it is necessary to manually observe the scale of the cylinder to confirm the added test liquid. Manual observation and human subjectivity affect the accuracy of liquid addition, which is not conducive to use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the utility model includes a sampling barrel for sampling, a sampling port arranged in the middle of the bottom end of the sampling barrel, a piston installed inside the sampling barrel, a piston rod installed at the top end of the piston, and a handle installed at the top end of the piston rod, and also includes a positioning assembly, and the outer side of the sampling barrel is provided with a positioning assembly;

[0006] The positioning assembly includes an arc block, an external thread, a positioning cylinder, anti-slip grooves, an internal thread, scale lines and a limit block. The arc block is symmetrically arranged on the sampling cylinder, an external thread is opened on the outer side of the arc block, a positioning cylinder is screwed on the arc block, and the sampling cylinder is provided with scale lines between the arc blocks.

[0007] Preferably, the sampling tube and the positioning tube are both made of transparent plastic material.

[0008] Preferably, the surface of the positioning tube is provided with anti-slip grooves.

[0009] Preferably, the interior of the positioning cylinder is provided with an internal thread engaged with the external thread.

[0010] Preferably, a limit block is provided at the bottom end of the sampling cylinder.

[0011] Preferably, the diameter of the handle is larger than the diameter of the positioning tube.

[0012] Beneficial effect: When the utility model is used, the sampling port is placed in the sampling liquid, the handle is pulled, the handle pulls the piston rod, the piston rod pulls the piston, and the piston moves to draw the liquid into the interior of the sampling tube. When testing, the scale V of the piston position is observed by the scale line, and the liquid to be tested, that is, the discharged liquid, is V. At this time, the positioning cylinder is rotated, and the positioning cylinder is rotated to contact the handle with the cooperation of the external thread and the internal thread, and then the positioning cylinder is rotated downward, and the rotation scale is the length of V. After the rotation is completed, when discharging the sampling liquid for testing, the handle is pushed, the handle pushes the piston rod, and the piston rod pushes the piston. The piston moves to push the liquid out through the sampling port for metering testing until the handle rests on the positioning cylinder. When discharging the sampling liquid for testing, there is no need to observe, which avoids errors caused by human observation and has high accuracy.

[0013] The utility model has a novel structure and an ingenious conception. When the sampling liquid is discharged for detection, positioning can be performed without the need for manual observation, thus avoiding errors caused by manual observation and having high accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the sampling tube of the utility model;

[0017] Figure 3 This is a top view of the sampling tube of the utility model;

[0018] Numbers in the figure: 1. Sampling cylinder; 2. Sampling port; 3. Piston; 4. Piston rod; 5. Handle; 6. Positioning assembly; 7. Arc block; 8. External thread; 9. Positioning cylinder; 10. Anti-slip pattern; 11. Internal thread; 12. Scale line; 13. Limit block. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-3 The specific implementation modes of the present utility model are further described in detail.

[0020] Embodiment 1, by Figure 1-3The utility model provides a metering and testing sampling device, comprising a sampling tube 1 for sampling, a sampling port 2 arranged at the middle of the bottom end of the sampling tube 1, a piston 3 installed on the inner side of the sampling tube 1, a piston rod 4 installed on the top end of the piston 3, and a handle 5 installed on the top end of the piston rod 4, and also comprising a positioning component 6, an arc block 7, an external thread 8, a positioning tube 9, an anti-slip pattern 10, an internal thread 11, a scale line 12 and a limit block 13. The outer side of the sampling tube 1 is provided with a positioning component 6;

[0021] The positioning assembly 6 includes an arc block 7, an external thread 8, a positioning tube 9, an anti-slip pattern 10, an internal thread 11, scale lines 12 and a limit block 13. The arc block 7 is symmetrically arranged on the sampling tube 1. The outer side of the arc block 7 is provided with an external thread 8. The positioning tube 9 is screwed on the arc block 7. The sampling tube 1 is located between the arc blocks 7 and scale lines 12 are arranged.

[0022] The sampling tube 1 and the positioning tube 9 are both made of transparent plastic material, so that the scales of the sampling tube 1 and the positioning tube 9 can be observed more intuitively.

[0023] The surface of the positioning tube 9 is provided with anti-skid grooves 10, so that the positioning tube 9 has good anti-skid performance.

[0024] The interior of the positioning tube 9 is provided with an internal thread 11 which meshes with the external thread 8 for easy fitting and connection.

[0025] A limiting block 13 is provided at the bottom end of the sampling tube 1 for facilitating limiting.

[0026] The diameter of the handle 5 is larger than the diameter of the positioning tube 9 , so that the handle 5 can be positioned by the positioning tube 9 .

[0027] Working principle: When the utility model is used, the sampling port 2 is placed in the sampling liquid, the handle 5 is pulled, the handle 5 pulls the piston rod 4, the piston rod 4 pulls the piston 3, and the piston 3 moves to draw the liquid into the interior of the sampling tube 1. When testing, the scale V1 of the position of the piston 3 is observed through the scale line 12, and the liquid to be tested, that is, the discharged liquid is V2. At this time, the positioning cylinder 9 is rotated, and the positioning cylinder 9 is rotated to contact with the handle 5 under the cooperation of the external thread 8 and the internal thread 11, and then the positioning cylinder 9 is rotated downward, and the rotation scale is the length of V2. After the rotation is completed, when discharging the sampling liquid for testing, the handle 5 is pushed, the handle 5 pushes the piston rod 4, and the piston rod 4 pushes the piston 3. The piston 3 moves to push the liquid out through the sampling port 2 for metering testing until the handle 5 is against the positioning cylinder 9. When discharging the sampling liquid for testing, there is no need to observe, which avoids the error caused by human observation and has high accuracy.

[0028] Beneficial effects: The utility model has a novel structure and an ingenious conception. When discharging the sampling liquid for detection, positioning can be performed without the need for manual observation, thus avoiding errors caused by manual observation and having high accuracy.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A measuring and detecting sampling device, comprising a sampling cylinder (1) for sampling, a sampling port (2) arranged at the middle of the bottom end of the sampling cylinder (1), a piston (3) installed inside the sampling cylinder (1), a piston rod (4) installed at the top end of the piston (3), and a handle (5) installed at the top end of the piston rod (4), characterized in that: It also comprises a positioning component (6), and the positioning component (6) is arranged on the outer side of the sampling tube (1); The positioning assembly (6) comprises an arc block (7), an external thread (8), a positioning cylinder (9), an anti-slip pattern (10), an internal thread (11), a scale line (12) and a limit block (13); the arc block (7) is symmetrically arranged on the sampling cylinder (1); an external thread (8) is provided on the outer side of the arc block (7); the positioning cylinder (9) is screwed onto the arc block (7); and the sampling cylinder (1) is provided with a scale line (12) between the arc blocks (7).

2. A measurement detection sampling device according to claim 1, characterized in that: The sampling tube (1) and the positioning tube (9) are both made of transparent plastic material.

3. A measurement detection sampling device according to claim 1, characterized in that: The surface of the positioning cylinder (9) is provided with anti-slip grooves (10).

4. A measurement detection sampling device according to claim 1, characterized in that: The interior of the positioning cylinder (9) is provided with an internal thread (11) which meshes with the external thread (8).

5. A measurement detection sampling device according to claim 1, characterized in that: A limiting block (13) is provided at the bottom end of the sampling cylinder (1).

6. A measurement detection sampling device according to claim 1, characterized in that: The diameter of the handle (5) is greater than the diameter of the positioning tube (9).

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