A new experimental sampling tube

Abstract

The utility model discloses a novel experimental sampling tube belongs to laboratory instrument technical field, including sampling tube body, the top of sampling tube body is connected with detachable cover, the inner chamber upper portion of sampling tube body is provided with a filter screen, and the filter screen bottom surface and the extension connection of sampling tube body inner chamber direction has the funnel, and the one end away from filter screen of funnel is provided with the flow guide port, and the funnel and flow guide port are located in the inner chamber of sampling tube body and the coaxial heart arrangement of funnel and flow guide port and sampling tube body, and the inner chamber of detachable cover is provided with elastic sealing piece, and the bottom of sampling tube body still detachable is connected with one for supporting the temporary placement support disc of supporting and carrying sampling tube body. The utility model has realized the preliminary purification function to liquid sample, prevented solid impurity interference analysis result or damaged subsequent analysis instrument, reached the effect of improving experimental data accuracy and equipment security.

Description

Technical Field

[0001] This utility model belongs to the field of laboratory equipment technology, and in particular to a novel sampling tube for laboratory use. Background Technology

[0002] Sampling tubes are fundamental laboratory instruments widely used in various fields such as laboratory analysis, environmental monitoring, food testing, and pharmaceutical research and development. They are primarily used for collecting, storing, and transferring liquid samples. Traditional sampling tubes have a relatively simple structure, typically consisting of a transparent tube and a sealed cap. They are single-function and lack features for sample pretreatment. In practical use, especially when preliminary filtration or transfer is required after sample collection, traditional sampling tubes often fail to meet requirements for efficiency and cleanliness, leading to interference with subsequent analytical results and even affecting the accuracy and repeatability of experiments.

[0003] With the advancement of scientific research and the continuous improvement of experimental precision requirements, researchers have placed higher demands on the functionality of sampling tools. Traditional sampling tubes do not integrate any filtration components in their design. Liquid samples are poured directly into the tube. When the sample contains impurities, these particles will enter the sampling tube along with the liquid and may flow into subsequent analytical instruments. If not filtered in time, these tiny particles may alter the physical properties of the sample (such as viscosity and density), thereby affecting the detection data. Utility Model Content

[0004] The purpose of this invention is to provide a novel sampling tube for experiments, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel experimental sampling tube, comprising a sampling tube body, a detachable cap snapped onto the top of the sampling tube body, a filter screen disposed on the upper part of the inner cavity of the sampling tube body, a funnel extending from the bottom surface of the filter screen toward the inner cavity of the sampling tube body, a flow guide port disposed at the end of the funnel away from the filter screen, the funnel and the flow guide port being located in the inner cavity of the sampling tube body and the funnel, the flow guide port and the sampling tube body being coaxially arranged, an elastic sealing element disposed in the inner cavity of the detachable cap, the elastic sealing element wrapping around the top of the sampling tube body when the sampling tube body and the detachable cap are snapped together, and a temporary support plate for supporting and carrying the sampling tube body is detachably connected to the bottom end of the sampling tube body.

[0006] In a preferred embodiment, the bottom periphery of the sampling tube body is provided with an external thread, and the top surface of the temporary support plate is provided with an internal thread insertion hole.

[0007] In a preferred embodiment, the elastic sealing element includes a rubber sealing cap bonded to the inner top wall of the removable cover and a rubber sealing plug bonded to the surface of the rubber sealing cap. When the removable cover is snapped onto the top of the sampling tube body, the rubber sealing plug seals and elastically inserts into the inner cavity of the sampling tube body, and the top surface of the sampling tube body elastically abuts against the surface of the rubber sealing cap.

[0008] In a preferred embodiment, a raised ring is integrally formed on the inner wall of the top of the sampling tube body above the filter screen. The raised ring abuts against the outer wall of the rubber sealing plug, causing the periphery of the rubber sealing plug to be recessed, thereby further improving the sealing performance.

[0009] In a preferred embodiment, a pull plate is fixed to the outer wall of the filter screen on the side away from the funnel, and the end of the pull plate away from the filter screen has a pull ring.

[0010] In this preferred embodiment, the upper inner wall of the sampling tube body is fixed with a support ring for supporting and mounting the filter screen. When installing the filter screen, the filter screen is mounted on the support ring by holding the pull ring with tweezers.

[0011] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0012] This novel experimental sampling tube, through its filter design, effectively intercepts particulate matter (such as dust, soil particles, and metal fragments) in the experimental liquid before it enters the tube body. This achieves preliminary purification of the liquid sample, preventing solid impurities from interfering with analytical results or damaging subsequent analytical instruments, thereby improving the accuracy of experimental data and the safety of equipment. Traditional sampling tubes typically lack built-in filtration, requiring additional filter membranes or devices, which not only increases operational steps but also easily leads to cross-contamination. This solution integrates the filter inside the sampling tube, simplifying the operation process and improving experimental efficiency.

[0013] The design of the funnel and guide port allows the filtered liquid to flow smoothly into the guide port and eventually converge at the bottom of the sampling tube, achieving centralized liquid discharge and preventing liquid residue from adhering to the walls. This improves liquid utilization and reduces errors. The coaxial arrangement of the funnel and guide port ensures optimized liquid flow path, avoiding dead zones and stagnation. This is particularly suitable for sampling high-viscosity or volatile liquids, improving sampling accuracy and safety.

[0014] The design of the temporary support plate being threadedly connected to the bottom of the sampling tube body allows the sampling tube to stand stably upright when not in use, achieving a temporary support function and preventing tipping, protecting the integrity of the sample, and facilitating operation. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram showing the disassembled structure of the sampling tube body and the temporary placement support plate of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure of the rubber sealing plug of this utility model;

[0019] Figure 4 This is a schematic diagram of the installation structure of the filter screen of this utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure of the funnel of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] In the diagram: 1. Sampling tube body; 2. Removable cap; 3. Temporary support plate; 4. External threaded passage; 5. Internal threaded insertion hole; 6. Rubber sealing plug; 7. Rubber sealing cap; 8. Convex ring; 9. Filter screen; 10. Support ring; 11. Pull plate; 12. Pull ring; 13. Funnel; 14. Flow guide port. Detailed Implementation

[0023] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0024] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0025] This embodiment provides, for example Figures 1 to 5The novel experimental sampling tube shown includes a sampling tube body 1, a removable cap 2 snapped onto the top of the sampling tube body 1, a filter screen 9 disposed on the upper part of the inner cavity of the sampling tube body 1, a funnel 13 extending from the bottom surface of the filter screen 9 toward the inner cavity of the sampling tube body 1, a flow guide port 14 disposed at the end of the funnel 13 away from the filter screen 9, the funnel 13 and the flow guide port 14 are located in the inner cavity of the sampling tube body 1 and are coaxially arranged with the sampling tube body 1, an elastic seal is disposed in the inner cavity of the removable cap 2, when the sampling tube body 1 and the removable cap 2 are snapped together, the elastic seal wraps around the top of the sampling tube body 1, and a temporary support plate 3 for supporting and carrying the sampling tube body 1 is detachably connected to the bottom end of the sampling tube body 1. The filter screen 9 is used to filter particulate matter in the experimental liquid, including dust, soil particles, and metal fragments. These solid particles may interfere with the analysis results or damage the analytical instrument. The funnel 13 is designed to guide the liquid flow to the flow port 14. The coaxial arrangement of the flow port 14, the funnel 13, and the filter screen 9 ensures that the liquid flowing out of the flow port 14 flows to the bottom of the sampling tube body 1 and does not stick to the wall. The temporary placement support plate 3 is designed to ensure that the sampling tube body 1 can be properly placed when temporary placement is required and will not tip over.

[0026] In this embodiment, the outer wall of the bottom periphery of the sampling tube body 1 is provided with an external thread 4, and an internal thread insertion hole 5 is opened in the middle of the top surface of the temporary support plate 3.

[0027] In this embodiment, the elastic seal includes a rubber sealing cap 7 bonded to the inner top wall of the removable cap 2 and a rubber sealing plug 6 bonded to the surface of the rubber sealing cap 7. When the removable cap 2 is snapped onto the top of the sampling tube body 1, the rubber sealing plug 6 seals and elastically inserts into the inner cavity of the sampling tube body 1, and the top surface of the sampling tube body 1 elastically abuts against the surface of the rubber sealing cap 7.

[0028] In this embodiment, a raised ring 8 is integrally formed on the top inner wall of the sampling tube body 1 above the filter screen 9. The raised ring 8 abuts against the outer peripheral wall of the rubber sealing plug 6, so that the periphery of the rubber sealing plug 6 is recessed by a ring, thereby further improving the sealing performance.

[0029] In this embodiment, a pull plate 11 is fixed to the outer wall of the filter screen 9 on the side away from the funnel 13, and the end of the pull plate 11 away from the filter screen 9 has a pull ring 12.

[0030] In this embodiment, a support ring 10 for supporting and mounting the filter screen 9 is fixed on the upper inner wall of the inner cavity of the sampling tube body 1. When installing the filter screen 9, the filter screen 9 is mounted on the support ring 10 by holding the pull ring 12 with tweezers.

[0031] Working principle

[0032] This novel experimental sampling tube is used by holding the pull ring 12 on the pull plate 11 with tweezers to place the filter screen 9 on the support ring 10 at the upper part of the inner cavity of the sampling tube body 1. This process requires careful operation to avoid damaging the filter screen. The funnel 13 extending from the bottom surface of the filter screen 9 should hang down naturally, and the guide port 14 at the end away from the filter screen should be aligned with the center of the bottom of the sampling tube body 1 to facilitate the flow of liquid.

[0033] The rubber sealing plug 6 and rubber sealing cap 7 of the elastic seal are bonded to the inner top wall of the removable cover 2. When the removable cover 2 is snapped onto the top of the sampling tube body 1, the rubber sealing plug 6 will seal and elastically insert into the inner cavity of the sampling tube body. At the same time, the convex ring 8 further enhances the sealing performance to prevent leakage. Open the removable cover 2 and pour the liquid sample to be tested through the sampling tube opening. It will undergo preliminary filtration through the filter screen 9 to remove any impurities such as dust, soil particles, or metal fragments that may be present, so as to reduce the impact on subsequent analysis.

[0034] The liquid filtered by the filter screen 9 flows through the funnel 13 to the guide port 14 and finally into the bottom of the sampling tube body 1. Since the funnel 13, the guide port 14 and the filter screen 9 are arranged coaxially with the sampling tube body 1, the liquid can flow smoothly and will not stick to the wall.

[0035] After sample collection is completed, connect the bottom of the sampling tube body 1 to the internal threaded insertion hole 5 of the temporary support plate 3 through the external thread 4 to provide a stable platform and prevent the sampling tube from tipping over accidentally. According to the specific requirements of the laboratory, remove the removable cap 2 and prepare the sample in the sampling tube for subsequent analysis.

[0036] It should be noted that, in this document, relational terms such as "one" and "two" are used merely 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 a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] 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 novel experimental sampling tube, comprising a sampling tube body (1), characterized in that: The top of the sampling tube body (1) is fitted with a removable cover (2). A filter screen (9) is provided on the upper part of the inner cavity of the sampling tube body (1). A funnel (13) is connected to the bottom surface of the filter screen (9) and extends towards the inner cavity of the sampling tube body (1). A flow guide port (14) is provided at the end of the funnel (13) away from the filter screen (9). The funnel (13) and the flow guide port (14) are located in the inner cavity of the sampling tube body (1) and the funnel (13), the flow guide port (14) and the sampling tube body (1) are arranged coaxially. An elastic seal is provided in the inner cavity of the removable cover (2). When the sampling tube body (1) and the removable cover (2) are fitted together, the elastic seal wraps around the top of the sampling tube body (1). A temporary placement support plate (3) for supporting the sampling tube body (1) is also detachably connected to the bottom of the sampling tube body (1).

2. The novel experimental sampling tube according to claim 1, characterized in that: The sampling tube body (1) has an external threaded tooth path (4) on the outer wall of the bottom periphery, and an internal threaded insertion hole (5) is opened in the middle of the top surface of the temporary placement support plate (3).

3. A novel experimental sampling tube according to claim 2, characterized in that: The elastic seal includes a rubber sealing cap (7) bonded to the inner top wall of the removable cap (2) and a rubber sealing plug (6) bonded to the surface of the rubber sealing cap (7). When the removable cap (2) is snapped onto the top of the sampling tube body (1), the rubber sealing plug (6) seals and elastically inserts into the inner cavity of the sampling tube body (1), and the top surface of the sampling tube body (1) elastically abuts against the surface of the rubber sealing cap (7).

4. A novel experimental sampling tube according to claim 3, characterized in that: A raised ring (8) is integrally formed on the top inner wall of the sampling tube body (1) above the filter screen (9). The raised ring (8) abuts against the outer wall of the rubber sealing plug (6), so that the periphery of the rubber sealing plug (6) is recessed by a ring.

5. A novel experimental sampling tube according to claim 4, characterized in that: A pull plate (11) is fixed to the outer wall of the filter screen (9) away from the funnel (13), and the pull plate (11) has a pull ring (12) at the end away from the filter screen (9).

6. A novel experimental sampling tube according to claim 5, characterized in that: The upper inner wall of the sampling tube body (1) is fixed with a support ring (10) for supporting the filter screen (9). When installing the filter screen (9), the filter screen (9) is placed on the support ring (10) by holding the pull ring (12) with tweezers.

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