Drinking water sampling device

Abstract

The utility model relates to water quality detection field, concretely relates to domestic drinking water sampling device, including sampling bottle, the sampling bottle is equipped with the baffle, the baffle is circular, adopts the material of the material such as polystyrene that can float, such as the material of low density below water and insoluble in water, the mouth of sampling bottle is equipped with the limit ring, the diameter of baffle is less than the mouth diameter of sampling bottle, is greater than the inner diameter of limit ring, namely baffle can enter the mouth of sampling bottle, but will not go out from limit ring, when adding the water of sampling, baffle floats on the water surface, when sampling water is full, baffle floats and blocks limit ring, thereby realizes automatic sealing of sampling bottle after filling with water, avoids leaving air in sampling bottle, can avoid the medicine in sampling bottle dissolving in water, and with water flow overflows and leads to dilution and affects the test result.

Description

Technical Field

[0001] This utility model relates to the field of water quality testing, specifically to a sampling device for drinking water. Background Technology

[0002] Drinking water is safe for direct consumption, therefore it has high quality requirements and must meet the requirements of the "Standard Examination Methods for Drinking Water" (GB / T 5750-2023). This standard has detailed technical requirements, and the sample collection volume varies for different test indicators. Some samples require full bottle sampling. The sampling bottles are also pre-treated, such as by adding various preservatives.

[0003] However, existing sampling bottles rely on manual water addition for sampling, which is unstable due to inconsistent manual control. Incomplete sampling can leave space, causing gas-liquid imbalance. Volatile organic compounds in the water may evaporate into the air, and volatile organic compounds in the air may dissolve in the water, affecting the accuracy of the monitoring results. If the water sample overflows during sampling, some preservatives, such as ascorbic acid, will be carried away, resulting in insufficient preservatives remaining in the bottle, which will affect the accuracy of the experiment. At the same time, some preservatives are harmful to human health, and direct contact with them may cause damage to the skin and mucous membranes of operators. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a drinking water sampling device that automatically closes when the water sample is full to prevent overflow.

[0005] To achieve the above objectives, this utility model provides a drinking water sampling device, including a sampling bottle. The sampling bottle has a shielding plate inside. The shielding plate is circular and made of a floating material. A limiting ring is provided at the mouth of the sampling bottle. The diameter of the shielding plate is smaller than the diameter of the mouth of the sampling bottle and larger than the inner diameter of the limiting ring.

[0006] The principle and beneficial effects of the technical solution are as follows: the sampling bottle is a common sample bottle, including a bottle body, a cap, and a pre-placed preservative; the shielding plate is located in the sampling bottle and is made of a floating material, such as polystyrene, which has a density lower than water and is insoluble in water; the diameter of the shielding plate is smaller than the diameter of the sampling bottle opening and larger than the inner diameter of the limiting ring, that is, the shielding plate can enter the opening of the sampling bottle but will not exit from the limiting ring; when water to be sampled is added, the shielding plate floats on the water surface; when the sampling water is full, the shielding plate floats up and blocks the limiting ring, thereby automatically sealing the sampling bottle after it is filled with water, preventing air from remaining in the sampling bottle, and preventing the reagent in the sampling bottle from dissolving in water and overflowing with the water flow, thus diluting and affecting the test results.

[0007] In a preferred embodiment of this utility model, the shielding plate is provided with a limiting rod, and the inner wall of the sampling bottle mouth is provided with sliding grooves on both sides in the vertical direction; the limiting rod passes through the shielding plate and its two ends are set in the sliding grooves on both sides.

[0008] Beneficial effects: The two ends of the limiting rod are located in the sliding groove, which is set on the inner wall of the sampling bottle opening. This allows the limiting rod to slide up and down only in the sliding groove, thereby allowing the shielding plate to slide up and down at the bottle opening. This prevents the shielding plate from getting stuck at the connection between the bottle body and the bottle opening when water to be sampled is added, thus avoiding failure to seal the limiting ring in time. At the same time, the limiting rod can also be used to position the shielding plate so that it is on the same axis as the center of the limiting ring, allowing the shielding plate to accurately abut against the limiting ring when it floats up.

[0009] In a preferred embodiment of this utility model, the shielding plate and the limiting rod are rotatably connected.

[0010] Beneficial effects: The shielding plate can rotate relative to the limiting rod. When no water is added, the shielding plate naturally hangs down under the action of gravity and is in a vertical state, which makes it easy to add water to be sampled. After the water to be sampled is added, it automatically flips under the action of buoyancy and drives the limiting rod to move upward, abutting against the limiting ring, thereby sealing the mouth of the sampling bottle.

[0011] In a preferred embodiment of this utility model, the limiting rod is provided with hemispherical heads at both ends.

[0012] Beneficial effects: The hemispherical head can reduce resistance during sliding, making it easier for the limiting rod to slide up and down, and it is also easy to snap into the groove during installation.

[0013] In a preferred embodiment of this utility model, a water-resistant membrane is fixed on both sides of the shielding sheet.

[0014] Beneficial effects: The water-resistant membrane can be made of polytetrafluoroethylene or polyethylene, and is used to separate the shielding sheet from the water to be tested, preventing water from entering.

[0015] In a preferred embodiment of this utility model, a sampling tube is connected to the top of the sampling bottle, and a diversion tube is connected to the bottom side of the sampling tube.

[0016] Beneficial effects: The sampling tube is used to connect to a faucet or other water source outlet, allowing water to flow directly into the sampling bottle, while the diverter tube is located on the bottom side of the sampling tube. When the shielding plate closes the mouth of the sampling bottle, the water flows directly out from the diverter tube. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of an embodiment of the drinking water sampling device of this utility model.

[0019] Figure 2 This is a cross-sectional view of an embodiment of the drinking water sampling device of this utility model.

[0020] Figure 3 This is a schematic diagram illustrating the use of an embodiment of the drinking water sampling device of this utility model.

[0021] The reference numerals in the accompanying drawings are as follows: 1. Sampling bottle, 2. Shielding plate, 3. Limiting ring, 4. Limiting rod, 5. Slide groove, 6. Hemispherical head, 7. Waterproof membrane, 8. Sampling tube, 9. Diverter tube. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0023] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] As attached Figure 1 and Figure 2As shown, this utility model provides a drinking water sampling device, including a sampling bottle 1, which is a common sample bottle, comprising a bottle body, a cap, and a pre-placed preservative (not shown in the figure); the inner wall of the sampling bottle 1 has vertical grooves 5 on both sides; a limiting rod 4 is provided in the two grooves 5, and the two ends of the limiting rod 4 are provided with hemispherical heads 6, which can reduce resistance during sliding, facilitate the up and down sliding of the limiting rod 4, and also facilitate insertion into the grooves 5 during installation; a rotatable shielding plate 2 is provided on the limiting rod 4, the shielding plate 2 is circular and made of a floating material, such as polystyrene, which has a density lower than water and is insoluble in water; a limiting ring 3 is provided at the mouth of the sampling bottle 1; the diameter of the shielding plate 2 is smaller than the diameter of the mouth of the sampling bottle 1 and larger than the inner diameter of the limiting ring 3.

[0027] The diameter of the shielding plate 2 is smaller than the diameter of the mouth of the sampling bottle 1 and larger than the inner diameter of the limiting ring 3. That is, the shielding plate 2 can enter the mouth of the sampling bottle 1, but will not exit the limiting ring 3. The two ends of the limiting rod 4 are located in the sliding groove 5, and the sliding groove 5 is set on the inner wall of the mouth of the sampling bottle 1, so that the limiting rod 4 can only slide up and down in the sliding groove 5, thereby allowing the shielding plate 2 to slide up and down at the mouth of the bottle. This prevents the shielding plate 2 from getting stuck at the connection between the bottle body and the mouth when the water to be sampled is added, thus preventing it from failing to seal the limiting ring 3 in time. At the same time, the limiting rod 4 can also be used to position the shielding plate 2 so that it is on the same axis as the center of the limiting ring 3, so that the shielding plate 2 can accurately abut against the limiting ring 3 when it floats up.

[0028] As attached Figure 3 As shown, in this embodiment, a water-resistant membrane 7 is fixed on both sides of the shielding sheet 2. The water-resistant membrane 7 can be made of polytetrafluoroethylene or polyethylene, and is used to separate the shielding sheet 2 from the water to be tested, so as to prevent water from entering.

[0029] As attached Figure 3 As shown, in this embodiment, a sampling tube 8 is connected to the top of the sampling bottle 1, and a diversion pipe 9 is connected to the bottom side of the sampling tube 8. The sampling tube 8 is used to connect to a faucet or other water source outlet so that water flows directly into the sampling bottle 1. The diversion pipe 9 is located on the bottom side of the sampling tube 8. When the shielding plate 2 closes the bottle opening of the sampling bottle 1, the water flows directly out from the diversion pipe 9.

[0030] When no water is added, the shielding plate 2 hangs down naturally under gravity, maintaining a vertical position, which facilitates the addition of water to be sampled. Then, the upper end of the sampling tube 8 is connected to the outlet of the water source to be sampled, and the lower end is placed on the mouth of the sampling bottle 1 for sampling. As water is gradually added, the shielding plate 2 rotates and floats on the water surface, then drives the limiting rod 4 to move upward. When the sampling water is full, the shielding plate floats up and blocks the limiting ring 3, thereby automatically sealing the sampling bottle 1 after it is filled with water, preventing air from remaining in the sampling bottle 1, and preventing the reagent in the sampling bottle 1 from dissolving in the water and overflowing with the water flow, thus diluting and affecting the test results. At this time, the outlet of the water source to be sampled is closed. Even if it is not closed in time, the excess water to be sampled can be discharged from the diversion pipe 9 and will not enter the sampling bottle 1, causing dilution of the preservative.

[0031] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. Typical known structures and common knowledge techniques in the preferred embodiments have not been described in detail here. Those skilled in the art can improve and implement the technical solution of this utility model based on the inspiration given in these embodiments and their own capabilities. Some typical known structures, known methods or common knowledge techniques should not be obstacles for those skilled in the art to implement this application.

[0032] The scope of protection claimed in this application shall be determined by the contents of its claims. The contents of the utility model description, specific embodiments, and drawings are used to interpret the claims.

[0033] Within the scope of the technical concept of this application, several modifications can be made to the specific implementation of this application, and these modified implementations should also be considered within the protection scope of this application.

Claims

1. A drinking water sampling device, comprising a sampling bottle, characterized in that: The sampling bottle is equipped with a shielding plate, which is circular and made of a floating material. A limiting ring is provided at the mouth of the sampling bottle. The diameter of the shielding plate is smaller than the diameter of the mouth of the sampling bottle and larger than the inner diameter of the limiting ring.

2. The drinking water sampling device according to claim 1, characterized in that: The shielding plate is provided with a limiting rod, and the inner wall of the sampling bottle opening is provided with vertical grooves on both sides; the limiting rod passes through the shielding plate and is set at both ends in the grooves on both sides.

3. The drinking water sampling device according to claim 2, characterized in that: The shielding plate and the limiting rod are rotatably connected.

4. The drinking water sampling device according to claim 2, characterized in that: The limiting rod has hemispherical heads at both ends.

5. The drinking water sampling device according to claim 2, characterized in that: Waterproof membranes are fixed on both sides of the shielding sheet.

6. The drinking water sampling device according to any one of claims 1 to 4, characterized in that: The sampling bottle is connected to a sampling tube at the top, and a diversion tube is connected to the bottom side of the sampling tube.

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