Quantitative sampling device for detection reagent

Abstract

The utility model discloses a quantitative sampling device for a detection reagent, and belongs to the technical field of detection reagents. Comprising a sampling pipe, a lifting structure is arranged on the sampling pipe and used for moving the sampling pipe in the vertical direction, the sampling pipe is of a cavity structure, a piston is slidably arranged on the inner wall of the cavity structure, a push rod is fixedly arranged on the piston, the push rod extends to the outer side of the sampling pipe and is fixedly provided with a handle, and a quantitative plate is arranged on the inner wall of the cavity structure. The piston can abut against the quantifying plate, and a limiting guide structure is arranged on the sampling pipe and used for limiting and moving the quantifying plate. According to the utility model, the piston is driven to move through the push rod, so that the sampling needle extracts the reagent into the sampling tube, and when the piston is propped against the quantitative plate in the sampling process, the extraction of the reagent by the piston can be stopped, and the sampling amount each time is accurate and consistent.

Description

Technical Field

[0001] This utility model relates to a quantitative sampling device for a testing reagent, belonging to the field of testing reagent technology. Background Technology

[0002] Reagents, also known as biochemical reagents or test reagents, are pure chemicals primarily used for chemical reactions, analytical testing, research experiments, teaching experiments, and chemical formulations. They are generally categorized by use into general-purpose reagents, high-purity reagents, analytical reagents, instrumental analysis reagents, clinical diagnostic reagents, biochemical reagents, and inorganic ion colorimetric reagents. Sampling refers to the process of extracting an individual or sample from a population, i.e., the process of testing or observing the population. When sampling chemical reagents, pipettes are typically used. However, in the reagent sampling process, in many cases, researchers rely solely on observing the graduation lines to control the sample volume, which can lead to inconsistent sampling results, making it difficult to achieve uniform standards and interfering with the accuracy and reliability of experimental results. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a quantitative sampling device for a test reagent, which solves the problem in the prior art that the experimental personnel rely solely on observing the scale line to control the sampling amount of the reagent, which may lead to inconsistent sampling results, making it difficult to achieve a uniform standard and interfering with the accuracy and reliability of the experimental results.

[0004] The technical problem to be solved by this utility model is achieved by the following technical solution: it includes a sampling tube, on which a lifting structure is provided. The lifting structure is used to move the sampling tube vertically. The sampling tube is a hollow structure. A piston is slidably provided on the inner wall of the hollow structure. A push rod is fixedly provided on the piston. The push rod extends to the outside of the sampling tube and is fixedly provided with a handle. A metering plate is provided on the inner wall of the hollow structure. The piston can abut against the metering plate. A limiting guide structure is provided on the sampling tube. The limiting guide structure is used to limit and move the metering plate.

[0005] By adopting the above technical solution, when using this device, the required amount is determined, and the quantitative plate is moved to a suitable position by the limiting guide structure. Then, the push rod is moved by the handle, and the push rod moves the piston, allowing the sampling tube to sample the reagent. When the piston comes into contact with the quantitative plate during the sampling process, the movement of the piston can be stopped, ensuring that the sampling amount is accurate and consistent each time. This effectively avoids the problem of inaccurate sampling due to over- or under-sampling, making the experimental data more reliable and reducing the interference of sampling errors on the experimental results.

[0006] The present invention is further configured such that: the lifting structure includes a support base, a support plate is fixedly mounted on the support base, a sliding groove is provided on the support plate, a threaded rod is rotatably mounted on the support plate, one end of the threaded rod extends into the interior of the sliding groove and is threadedly mounted with a sliding block, the sliding block and the sliding groove are slidably connected, and the sliding block and the sampling tube are fixedly connected.

[0007] By adopting the above technical solution, the threaded rod is rotated, causing the sliding block to slide in the sliding groove, and then the sliding block drives the sampling tube to move synchronously.

[0008] The present invention is further configured such that: the limiting and guiding structure includes a guiding component and a limiting component, the guiding component includes a connecting rod fixedly connected to the quantitative plate, one end of the connecting rod is horizontally and radially fixedly provided with a guiding plate, a guiding groove is provided on the sampling tube, the guiding plate and the guiding groove are slidably connected, and the limiting component is provided on the guiding plate and is used to limit the guiding plate.

[0009] The present invention is further configured such that: the limiting component includes a plurality of limiting grooves opened on the sampling tube and communicating with the cavity structure, the limiting grooves passing through the sampling tube, the guide plate is provided with a positioning groove, a positioning plate is slidably arranged inside the positioning groove, one end of the positioning plate extends to the outside of the sampling tube, a transmission rod is fixedly arranged on the positioning plate at one end of the positioning groove, a limiting block is fixedly arranged on the transmission rod, one end of the limiting block extends to the outside of the positioning groove and can be inserted into the limiting groove.

[0010] The present invention is further configured such that: a spring is fixedly installed on one end of the positioning groove and the inner wall of the positioning groove on the positioning plate; a pointer is fixedly installed on the limiting block; and a scale line is provided on the outer surface of the sampling tube through which the limiting groove passes, with the scale line aligned with the positioning groove respectively, and the pointer can pass through the positioning groove and be aligned with the scale line.

[0011] By adopting the above technical solution, the positioning plate slides within the positioning groove. During this sliding process, the positioning plate compresses the spring, simultaneously moving the transmission rod. The transmission rod then moves the limiting block away from the limiting groove, causing the pointer to move and separating the limiting block from the limiting groove. This cancels the position limitation of the guide plate. Next, by pushing the positioning plate, the guide plate slides within the guide groove. During this movement, the guide plate simultaneously moves the connecting rod, which in turn moves the quantitative plate. By observing the scale lines and moving the pointer to the appropriate limiting groove side, the positioning plate is released. The spring then resets the positioning plate and transmission rod, causing them to move back to their original positions. The transmission rod then moves the limiting block towards the limiting groove, thus achieving the limitation of the limiting block and the limiting groove.

[0012] The present invention is further configured such that: a sampling needle is fixedly connected to one end of the sampling tube away from the handle. A fixing plate is fixedly installed on the sampling tube, and a protective cover is provided on the fixing plate. The protective cover is used to seal the sampling needle, and the protective cover and the fixing plate are detachably fixedly connected.

[0013] By adopting the above technical solution, the sampling needle is protected by a protective cover when sampling is not being performed, which prevents accidental contact with the sampling needle and damage. The detachable fixing method makes it easy for staff to remove the protective cover.

[0014] The beneficial effects of this invention are as follows: When using this device, the required amount is determined by moving the quantitative plate to a suitable position via the limiting guide structure. Then, the push rod is moved by the handle, which in turn moves the piston, allowing the sampling tube to sample the reagent. When the piston comes into contact with the quantitative plate during sampling, the movement of the piston is stopped, ensuring that the sampling amount is accurate and consistent each time. This effectively avoids the problem of inaccurate sampling due to over- or under-sampling, making the experimental data more reliable and reducing the interference of sampling errors on the experimental results. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional schematic diagram of the sampling tube in this utility model;

[0017] Figure 3 This is a cross-sectional view of the sampling tube in this utility model;

[0018] Figure 4 This is a three-dimensional schematic diagram of the guide and limiting component in this utility model.

[0019] In the diagram: 1. Sampling tube; 2. Cavity structure; 3. Piston; 4. Push rod; 5. Handle; 6. Quantitative plate; 1011. Support base; 1012. Support plate; 1013. Sliding groove; 1014. Threaded rod; 1015. Sliding block; 1021. Connecting rod; 1022. Guide plate; 1023. Guide groove; 1031. Limiting groove; 1032. Positioning groove; 1033. Positioning plate; 1034. Transmission rod; 1035. Limiting block; 1041. Spring; 1042. Pointer; 1043. Scale line; 1051. Sampling needle; 1061. Fixing plate; 1062. Protective cover. Detailed Implementation

[0020] In order to make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0021] like Figures 1 to 3 As shown, a quantitative sampling device for a test reagent includes a sampling tube 1, a lifting structure on the sampling tube 1, a cavity structure 2, a piston 3 slidably disposed on the inner wall of the cavity structure 2, the piston 3 moves to generate suction, causing the reagent to be drawn into the sampling tube 1, a push rod 4 is fixedly disposed on the piston 3, the push rod 4 extends to the outside of the sampling tube 1 and a handle 5 is fixedly disposed thereon, a quantitative plate 6 is slidably disposed on the inner wall of the cavity structure 2, the quantitative plate 6 is located in the direction in which the piston 3 generates suction, the piston 3 can abut against the quantitative plate 6, and a limit guide structure is provided on the sampling tube 1.

[0022] like Figure 1 As shown, the lifting structure includes a support base 1011, a support plate 1012 fixedly mounted on the support base 1011, a sliding groove 1013 opened along the axial direction of the sampling tube 1 on the support plate 1012, a threaded rod 1014 rotatably mounted on the support plate 1012, one end of the threaded rod 1014 extending into the interior of the sliding groove 1013 and threadedly mounted with a sliding block 1015, the sliding block 1015 and the sliding groove 1013 being slidably connected, the sliding block 1015 moving along the opening direction of the sliding groove 1013, the other end of the threaded rod 1014 extending to the outside of the support plate 1012 and fixedly mounted with a rotating block for facilitating the rotation of the threaded rod 1014, the sliding block 1015 and the sampling tube 1 being fixedly connected.

[0023] like Figure 3 and Figure 4As shown, the limiting and guiding structure includes a guiding component and a limiting component. The guiding component includes a connecting rod 1021 fixedly connected to the quantitative plate 6. A guide plate 1022 is horizontally and radially fixed at one end of the connecting rod 1021 away from the quantitative plate 6. A guide groove 1023 is opened on the sampling tube 1 along the axial direction of the sampling tube 1. The guide plate 1022 slides back and forth along the opening direction of the guide groove 1023. The limiting component is set on the guide plate 1022. The limiting component includes several limiting grooves 1031 that are opened on the sampling tube 1 and communicate with the cavity structure 2. The limiting grooves 1031 penetrate the sampling tube 1 and are linearly arrayed along the axial direction of the sampling tube 1. A positioning groove 1032 is radially opened on the guide plate 1022. A positioning plate 1033 is slidably arranged inside the positioning groove 1032. The positioning plate 1033 reciprocates along the opening direction of the positioning groove 1032. One end of the positioning plate 1033 extends to the outside of the sampling tube 1. A transmission rod 1034 is fixedly arranged at one end of the positioning plate 1033 located in the positioning groove 1032. Two transmission rods 1034 are provided. A limiting block 1035 is fixedly arranged on the transmission rod 1034. One end of the limiting block 1035 extends to the outside of the positioning groove 1032 and can be inserted into the limiting groove 1031. A spring 1041 is fixedly installed on one end of the positioning groove 1032 and on the inner wall of the positioning plate 1033. When the spring 1041 is not under force, the limiting block 1035 and the limiting groove 1031 are inserted to limit the position of the quantitative plate 6. When the spring 1041 is compressed, the limiting block 1035 and the limiting groove 1031 are separated, and the quantitative plate 6 can be moved. A pointer 1042 is fixedly installed on the limiting block 1035. The outer surface of the sampling tube 1 observed by the limiting groove 1031 is provided with scale lines 1043. The scale lines 1043 are aligned with the positioning groove 1032 respectively. The pointer 1042 can pass through the positioning groove 1032 and align with the scale lines 1043.

[0024] like Figures 1 to 3 As shown, a sampling needle 1051 is fixedly connected to the end of the sampling tube 1 away from the handle 5. A fixing plate 1061 is fixedly installed on the sampling tube 1, and a protective cover 1062 is provided on the fixing plate 1061. The protective cover 1062 is used to close the sampling needle 1051. The protective cover 1062 and the fixing plate 1061 are detachably fixedly connected. The detachable fixed connection includes, but is not limited to, snap-fit ​​and threaded connection. A protrusion is fixedly installed on the protective cover 1062, and a groove is opened on the side of the fixing plate 1061 facing the sampling needle 1051. The protrusion and the groove are snapped together.

[0025] When using this device, the required amount is determined by moving the quantitative plate 6 to the appropriate position via the limiting guide structure. Then, the handle 5 drives the push rod 4 to move, which in turn drives the piston 3 to move, allowing the sampling tube 1 to sample the reagent. When the piston 3 comes into contact with the quantitative plate 6 during sampling, the movement of the piston 3 is stopped, ensuring that the sampling amount is accurate and consistent each time. This effectively avoids inaccurate sampling due to over- or under-sampling, making the experimental data more reliable and reducing the interference of sampling errors on the experimental results.

[0026] The threaded rod 1014 is rotated, causing the sliding block 1015 to slide within the sliding groove 1013. The sliding block 1015 then drives the sampling tube 1 to move synchronously.

[0027] By pressing the positioning plate 1033 and sliding it within the positioning groove 1032, the positioning plate 1033 compresses the spring 1041 during the sliding process, simultaneously driving the transmission rod 1034 to move. The transmission rod 1034 then drives the limiting block 1035 to move away from the limiting groove 1031. The limiting block 1035 then drives the pointer 1042 to move, separating the limiting block 1035 from the limiting groove 1031, thus releasing the position limit on the guide plate 1022. Finally, by pushing the positioning plate 1033, the guide plate 1022 moves within the guide groove 1023. During the sliding process, the guide plate 1022 will simultaneously drive the connecting rod 1021 to move. Then, the connecting rod 1021 will drive the metering plate 6 to move. By observing the scale line 1043, the pointer 1042 will be moved to one side of the appropriate limiting groove 1031. Then, by releasing the positioning plate 1033, the spring 1041 will reset and push the positioning plate 1033 and the transmission rod 1034 to reset and move. Then, the transmission rod 1034 will drive the limiting block 1035 to move towards the limiting groove 1031, thereby achieving the limiting of the limiting block 1035 and the limiting groove 1031.

[0028] When not taking samples, the sampling needle 1051 is protected by the protective cover 1062 to prevent accidental contact with the sampling needle 1051 and damage. The protective cover 1062 can be easily removed by staff through its detachable fixing method.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A quantitative sampling device for a detection reagent, characterized in that: The sample tube (1) is provided with a lifting structure, which is used to move the sample tube (1) vertically. The sample tube (1) is a cavity structure (2). A piston (3) is slidably provided on the inner wall of the cavity structure (2). A push rod (4) is fixedly provided on the piston (3). The push rod (4) extends to the outside of the sample tube (1) and is fixedly provided with a handle (5). A quantitative plate (6) is provided on the inner wall of the cavity structure (2). The piston (3) can abut against the quantitative plate (6). A limiting guide structure is provided on the sample tube (1). The limiting guide structure is used to limit and move the quantitative plate (6).

2. The quantitative sampling device for a detection reagent according to claim 1, characterized in that: The lifting structure includes a support base (1011), a support plate (1012) is fixedly mounted on the support base (1011), a sliding groove (1013) is provided on the support plate (1012), a threaded rod (1014) is rotatably mounted on the support plate (1012), one end of the threaded rod (1014) extends into the interior of the sliding groove (1013) and a sliding block (1015) is threadedly mounted thereon, the sliding block (1015) is slidably connected to the sliding groove (1013), and the sliding block (1015) is fixedly connected to the sampling tube (1).

3. The quantitative sampling device for a detection reagent according to claim 1, characterized in that: The limiting and guiding structure includes a guiding component and a limiting component. The guiding component includes a connecting rod (1021) fixedly connected to the quantitative plate (6). One end of the connecting rod (1021) is horizontally and radially fixed with a guiding plate (1022). A guiding groove (1023) is provided on the sampling tube (1). The guiding plate (1022) and the guiding groove (1023) are slidably connected. The limiting component is provided on the guiding plate (1022) and is used to limit the guiding plate (1022).

4. The quantitative sampling device for a detection reagent according to claim 3, characterized in that: The limiting component includes several limiting grooves (1031) opened on the sampling tube (1) and communicating with the cavity structure (2). The limiting grooves (1031) pass through the sampling tube (1). The guide plate (1022) is provided with a positioning groove (1032). A positioning plate (1033) is slidably arranged inside the positioning groove (1032). One end of the positioning plate (1033) extends to the outside of the sampling tube (1). A transmission rod (1034) is fixedly arranged at one end of the positioning plate (1033) located in the positioning groove (1032). A limiting block (1035) is fixedly arranged on the transmission rod (1034). One end of the limiting block (1035) extends to the outside of the positioning groove (1032) and can be inserted into the limiting groove (1031).

5. The quantitative sampling device for a detection reagent according to claim 4, characterized in that: A spring (1041) is fixedly installed on one end of the positioning plate (1033) inside the positioning groove (1032) and on the inner wall of the positioning groove (1032). A pointer (1042) is fixedly installed on the limiting block (1035). A scale line (1043) is provided on the outer surface of the sampling tube (1) through which the limiting groove (1031) passes. The scale line (1043) is aligned with the positioning groove (1032) respectively. The pointer (1042) can pass through the positioning groove (1032) and align with the scale line (1043).

6. The quantitative sampling device for a detection reagent according to claim 1, characterized in that: A sampling needle (1051) is fixedly connected to one end of the sampling tube (1) away from the handle (5).

7. The quantitative sampling device for a detection reagent according to claim 6, characterized in that: A fixing plate (1061) is fixedly installed on the sampling tube (1), and a protective cover (1062) is installed on the fixing plate (1061). The protective cover (1062) is used to seal the sampling needle (1051). The protective cover (1062) and the fixing plate (1061) are detachably fixedly connected.

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