Safe sampler for anti-corrosion liquid
By designing a corrosion-resistant liquid safety sampler, using corrosion-resistant materials and a snap-fit structure, the safety hazards and leakage problems of existing equipment have been solved, achieving safe and efficient liquid sampling.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MINMETALS SALT LAKE CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-05-01
AI Technical Summary
Existing sampling equipment poses safety hazards, makes samples susceptible to contamination, and carries a high risk of leakage when dealing with liquid hazardous chemicals such as hydrochloric acid and nitric acid, affecting sample quality and operator safety.
A safety sampler consisting of a handle, a sealing cap, and a container has been designed. It is made of corrosion-resistant materials and uses a snap-fit and press-cap structure to achieve a fast and safe sampling process while ensuring a tight seal.
It improves the safety and accuracy of the sampling process, prevents liquid leakage, protects the health of operators, and ensures sample integrity.
Smart Images

Figure CN224189611U_ABST
Abstract
Description
A safety sampler for corrosive liquids Technical Field
[0001] This utility model relates to the field of liquid sampling equipment technology, and in particular to a safe sampler suitable for highly corrosive liquids such as hydrochloric acid and nitric acid. Background Technology
[0002] In chemical and mining production, sampling of various chemical products and raw materials is crucial. However, existing sampling equipment has many shortcomings when dealing with hazardous liquid chemicals such as hydrochloric acid and nitric acid. Currently, there is no fixed, professional sampling equipment for these hazardous liquids, and in practice, a simple method is often used, where one end of a wire is tied to an open plastic bottle for sampling. This method not only poses significant safety hazards—volatile gases can easily leak during sampling, harming the health of operators—but also makes the sample highly susceptible to external contamination, affecting sample quality and the accuracy of test results. Furthermore, this simple sampling tool cannot effectively prevent liquid splashing, and leaks are prone to occur during transportation and storage, further reducing sample reliability. Summary of the Invention
[0003] The present invention aims to solve the problems mentioned in the background art above, and provides a safety sampler for anti-corrosion liquids, so as to solve the problems of lack of professionalism in existing sampling equipment for hazardous liquid products such as hydrochloric acid and nitric acid, safety hazards in the sampling process, and impact on sample quality, so as to achieve safe and efficient sampling and ensure sample integrity.
[0004] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a safety sampler for anti-corrosion liquids, comprising a handle, a sealing cap, and a container, wherein the handle is hollow; the container is connected to one side of the lower end of the handle via a connecting block; a round hole is provided on one side of the upper end of the handle, and an elongated through hole A is provided on one side of the lower end of the handle near the container; a through hole B is provided at the upper end of the handle; a pressing cap is inserted into the through hole B; a snap-fit structure is provided at the lower end of the pressing cap; a movable rod is provided at the lower end of the snap-fit structure; a spring is sleeved on the upper end of the movable rod; a rotating structure is connected to the lower end of the movable rod; the rotating structure passes through the through hole A and is connected to the sealing cap; the sealing cap is used in conjunction with the container.
[0005] Furthermore, the buckle structure includes a buckle component, a connecting piece, and a protrusion; the buckle component is a hollow cylindrical shape; a long strip-shaped notch is provided on one side of the buckle component; a connecting piece is provided at the upper end of the notch; the connecting piece is made of thin iron sheet material; a circular protrusion is provided at one outer end of the connecting piece; the protrusion is used in conjunction with a circular hole.
[0006] Furthermore, the rotating structure includes a shaft, a connecting rod, and a ring; the movable rod has a through hole C near its lower end; the lower end of the movable rod has a through hole D perpendicular to the through hole C; the ring is welded perpendicularly to one end of the connecting rod; the other end of the ring passes through the through hole A and is welded to the sealing cap; the shaft passes through the ring and is inserted into the through hole D.
[0007] Furthermore, two semi-circular baffles are provided inside the handle near the upper end; springs are placed on the upper ends of the two semi-circular baffles.
[0008] Furthermore, a gasket is placed between the pressing cap and the buckle; one end of the pressing cap has a protruding edge extending outwards; the upper opening of the handle has a protruding edge extending inwards; the protruding edge of the pressing cap and the protruding edge of the handle mutually block each other.
[0009] Compared with the prior art, this utility model has the following advantages:
[0010] This device achieves rapid and safe sampling through a pressing cap and buckle on the handle. The sealing cap ensures no leakage during sampling, preventing harm to the environment and personnel. Both the container and the sealing cap are made of corrosion-resistant materials, enhancing the equipment's durability. This invention features a stable and reliable structural design, ensuring smooth and accurate sampling, and is easy to maintain, facilitating daily cleaning and upkeep. This corrosion-resistant liquid safety sampler not only improves sampling safety but also ensures ease of operation and equipment durability, possessing high practical value and promising market application prospects. Attached Figure Description
[0011] Figure 1 is a schematic diagram of the overall structure of this utility model;
[0012] Figure 2 is a right-side plan view of this utility model;
[0013] Figure 3 is a schematic diagram of the opening structure of this utility model;
[0014] Figure 4 is a schematic diagram of the exploded structure of this utility model;
[0015] Figure 5 is a frontal view (AA) of the opened lid of this utility model.
[0016] Legend: 1-Hand lever, 101-Round hole, 102-Through hole A, 103-Through hole B, 104-Baffle, 2-Sealing cap, 3-Container, 4-Press cap, 5-Gasket, 6-Snap fastener, 601-Connecting piece, 602-Protrusion, 7-Spring, 8-Moving rod, 801-Through hole C, 802-Through hole D, 803-Shaft, 9-Connecting rod, 10-Ring, 11-Connecting block. Detailed Implementation
[0017] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model: A safety sampler for corrosive liquids includes a handle 1, a sealing cap 2, and a container 3. The handle 1 is hollow, with an open upper end and a closed lower end, which facilitates weight reduction and provides sufficient strength. A container 3 is connected to one side of the lower end of the handle 1 via a connecting block 11, allowing for convenient and safe sampling from areas containing corrosive liquids while preventing liquid leakage and operator contact with the corrosive liquid. A circular hole 101 is provided on one side of the upper end of the handle 1, which cooperates with a protrusion 602 on a fastener 6. The protruding edge of the pressing cap 4 and the protruding edge of the handle 1 mutually block each other. A long, narrow through-hole A102 is provided on one side of the lower end of the handle 1 near the container 3 to accommodate the rotating structure. A through-hole B103 is provided at the upper end of the handle 1 for installing the pressing cap 4 and preventing it from falling out of the upper end of the handle 1. The pressing cap 4 is inserted into the through-hole B103. A snap-fit structure is provided at the lower end of the pressing cap 4. The snap-fit structure includes a snap-fit component 6, a connecting piece 601, and a protrusion 602. The snap-fit component 6 is a hollow cylindrical shape. A long, narrow notch is provided on one side of the snap-fit component 6. A connecting piece 601 is provided at the upper end of the notch. The connecting piece 601 is made of thin iron sheet material, which is easily deformable. The connecting piece 601 has a circular protrusion 602 on one outer end. The protrusion 602 works in conjunction with the circular hole 101. When the pressing cap 4 is pressed down, the protrusion 602 is in a relatively closed position. When it slides into the circular hole 101, it pops out and locks the protrusion 602 into the circular hole 101. The lower end of the buckle structure has a movable rod 8. The upper end of the movable rod 8 is fitted with a spring 7. When the user presses down on the protrusion 602, the spring force will restore the buckle 6 to its original position in the opposite direction. The lower end of the movable rod 8 is connected to a rotating structure. The rotating structure includes a shaft 803, a connecting rod 9, and a ring 10. The movable rod 8 has a through-hole near its lower end. A through hole C801 is provided; a through hole D802 is provided at the lower end of the movable rod 8 perpendicular to the through hole C801; the ring 10 is vertically welded to one end of the connecting rod 9; the other end of the ring 10 passes through the through hole A102 and is welded to the sealing cover 2; the shaft 803 passes through the ring 10 and is inserted into the through hole D802. When the movable rod 8 moves downward, the connecting rod 9 connected to the shaft 803 will be blocked by the bottom edge of the through hole A102, forming a lever effect, which lifts the sealing cover upward; the rotating structure passes through the through hole A102 and is connected to the sealing cover 2, which plays a sealing role to prevent corrosive acidic liquids from splashing out; the sealing cover 2 is used in conjunction with the container 3.
[0018] Furthermore, two semi-circular baffles 104 are provided inside the handle 1 near the upper end, so that the movable rod 8 can be inserted therein; a spring 7 is placed on the upper end of the two semi-circular baffles 104, which acts as a block to the spring 7 and compresses the spring 7.
[0019] Furthermore, a pad 5 is placed between the pressing cap 4 and the buckle 6 to provide cushioning; one end of the pressing cap 4 has a protruding edge extending outward; the upper opening of the handle 1 has a protruding edge extending inward.
[0020] In use, the user presses down on the pressing cap 4, causing the buckle 6 to slide downwards. Under the force of the buckle 6, the protrusion 602 on the buckle 6 snaps into the round hole 101. At this time, the lower end of the buckle 6 compresses the spring 7 and pushes the downward movable rod 8. Under the pressure of the spring 7, the buckle 6 is stably fixed. The rotating structure at the lower end of the downward movable rod 8 is blocked by the bottom of the through hole A102 on the handle 1, forming a lever principle to lift the connecting rod 9. At the same time, the sealing cap 2 connected to one end of the connecting rod 9 is also lifted. At this time, the user can take a sample. After the sample is taken, the user only needs to press the protrusion 602 inwards. Under the reaction of the spring 7, the buckle 6 and the pressing cap 4 are fully reset. In addition, the cushioning effect of the gasket 5 effectively prevents the sealing cap 2 from being reset with excessive force, which may cause corrosive liquid to splash out.
[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.
Claims
1. A safety sampler for corrosive liquids, comprising a handle (1), a sealing cap (2), and a container (3), characterized in that: The handle (1) is hollow; a container (3) is connected to one side of the lower end of the handle (1) via a connecting block (11); a round hole (101) is provided on one side of the upper end of the handle (1), and a long through hole A (102) is provided on one side of the lower end of the handle (1) near the container (3); a through hole B (103) is provided at the upper end of the handle (1); a pressing cap (4) is inserted into the through hole B (103); a buckle structure is provided at the lower end of the pressing cap (4); a movable rod (8) is provided at the lower end of the buckle structure; a spring (7) is sleeved on the upper end of the movable rod (8); a rotating structure is connected to the lower end of the movable rod (8); a sealing cap (2) is connected to the rotating structure through the through hole A (102); the sealing cap (2) is used in conjunction with the container (3).
2. The safety sampler for corrosion-resistant liquids according to claim 1, characterized in that: The buckle structure includes a buckle member (6), a connecting piece (601), and a protrusion (602); the buckle member (6) is a hollow cylinder; a long strip-shaped notch is provided on one side of the buckle member (6); a connecting piece (601) is provided at the upper end of the notch; the connecting piece (601) is made of thin iron sheet material; a circular protrusion (602) is provided at one end of the outer side of the connecting piece (601); the protrusion (602) is used in conjunction with the circular hole (101).
3. A safety sampler for corrosive liquids according to claim 1, characterized in that: The rotating structure includes a shaft (803), a connecting rod (9), and a ring (10); the movable rod (8) has a through hole C (801) near its lower end; the movable rod (8) has a through hole D (802) at its lower end perpendicular to the through hole C (801); the ring (10) is welded perpendicularly to one end of the connecting rod (9); the other end of the ring (10) passes through the through hole A (102) and is welded to the sealing cover (2); the shaft (803) passes through the ring (10) and is inserted into the through hole D (802).
4. A safety sampler for corrosive liquids according to claim 1, characterized in that: The handle (1) has two semi-circular baffles (104) located near the upper end; a spring (7) is placed on the upper end of the two semi-circular baffles (104).
5. A safety sampler for corrosive liquids according to claim 1, characterized in that: A gasket (5) is placed between the pressing cap (4) and the buckle (6); one end of the pressing cap (4) has a protruding edge; the upper opening of the handle (1) has a protruding edge; the protruding edge of the pressing cap (4) and the protruding edge of the handle (1) play a blocking role against each other.