Drip-proof sewage sampling and transferring device

Abstract

The utility model relates to a drip-proof sewage sampling and transferring device. The device comprises a bottle body, a liquid collecting cavity and a connecting assembly, the top of the bottle body is provided with an externally-expanded funnel-shaped flow guide cover, and the smaller end of the flow guide cover is coaxially connected with an opening in the upper end of the bottle body; the liquid collecting cavity is annular and coaxially arranged at the upper end of the bottle body in a sleeving mode, the upper end face of the liquid collecting cavity abuts against the lower end of the outer side wall of the flow guide cover in an attached mode, and a flow guide groove penetrating through the inner side wall and the outer side wall of the liquid collecting cavity is formed in the upper end of the liquid collecting cavity and used for guiding liquid drops on the outer side wall of the flow guide cover into the liquid collecting cavity; the liquid collecting cavity is detachably connected with the flow guide cover through a connecting assembly; the device is simple in overall structure and convenient to use, sample liquid is greatly convenient to pour through the flow guide cover with the external expansion opening, and liquid drops on the outer side wall of the flow guide cover can be prevented from flowing to a table board along the bottle body through the liquid collection cavity.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a leak-proof wastewater sampling and transfer device. Background Technology

[0002] In current wastewater treatment management, it is necessary to regularly sample the wastewater in sedimentation tanks to detect whether the wastewater exceeds standards, and then take appropriate measures. Wastewater sampling refers to the process of extracting water samples from polluted water according to prescribed methods and a certain proportion. By testing and analyzing the extracted water samples, the degree of water pollution, the types and contents of pollutants, and other relevant water quality parameters can be determined. This information guides production activities and enables the implementation of relevant measures to reduce water pollution.

[0003] When sampling wastewater, a sampling bucket is typically used. After collecting the wastewater in the bucket, it is poured into a sampling bottle for transfer, thus completing the sampling process. However, due to the small opening of traditional sampling bottles (such as the structure disclosed in patent publication number CN210638937U), transferring the sample into the sampling bottle is inconvenient, and spillage can easily occur. To avoid this, operators usually use a funnel attached to the sampling bottle to facilitate sample pouring, but this also increases the complexity of the sampling process. Furthermore, since the wastewater sample needs to be emptied from the sampling bottle later, the small opening of the bottle can cause wastewater to flow down the outer wall of the bottle onto the work surface, causing contamination. Therefore, to solve these problems, it is necessary to design a new sampling device to overcome the shortcomings of traditional sampling buckets. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a leak-proof sewage sampling and transfer device that can effectively solve the aforementioned problems.

[0005] To achieve the above requirements, the technical solution adopted by this utility model to solve its technical problem is as follows:

[0006] A drip-proof sewage sampling and transfer device is provided, including a bottle body with an outwardly expanding funnel-shaped flow guide cover on the top, the smaller end of the flow guide cover being coaxially connected to the upper opening of the bottle body;

[0007] The liquid collection chamber is annular and coaxially sleeved on the upper end of the bottle body. The upper end face of the liquid collection chamber is in close contact with the lower end of the outer side wall of the flow guide. The upper end of the liquid collection chamber is provided with a flow guide groove that penetrates its inner and outer side walls to guide the liquid droplets on the outer side wall of the flow guide into the liquid collection chamber.

[0008] A connecting assembly is provided, through which the liquid collection chamber is detachably connected to the flow guide cover.

[0009] The anti-drip sewage sampling and transfer device of this utility model has a hydrophobic coating with a contact angle greater than 150° on the outer surface of the flow guide cover.

[0010] The anti-drip sewage sampling and transfer device of this utility model has a V-shaped cross-section for the guide channel, and multiple guide channels are provided and evenly arranged along the circumference of the liquid collection cavity.

[0011] The anti-drip sewage sampling and transfer device of this utility model has a V-shaped wall between two adjacent guide channels with the smaller end facing outward.

[0012] The anti-drip sewage sampling and transfer device of this utility model includes a return flow hole on the side wall of the bottle body, an outlet flow hole corresponding to the return flow hole on the inner side wall of the liquid collection chamber, and a sealing ring surrounding the outlet flow hole on the side wall of the liquid collection chamber.

[0013] The anti-drip sewage sampling and transfer device of this utility model has an inclined annular bottom surface of the liquid collection chamber, and the liquid outlet hole is located at the lower end of the bottom surface of the liquid collection chamber and is flush with it.

[0014] The anti-drip sewage sampling and transfer device of this utility model has an open upper end for the liquid collection chamber; the connecting component includes an annular positioning groove and an annular rib vertically arranged on the outer wall of the guide shroud; the annular rib is coaxially arranged with the bottle body and its lower end extends to the outer side of the bottle body, and the gap between the annular rib and the outer wall of the bottle body forms the annular positioning groove. When assembled in place, the inner wall of the liquid collection chamber is securely inserted into the annular positioning groove.

[0015] The beneficial effects of this utility model are as follows: the overall structure of this device is simple and easy to use. The flow guide with an outwardly expanding opening greatly facilitates the pouring of sample liquid. Moreover, the liquid collection chamber can also prevent droplets on the outer wall of the flow guide from flowing down the bottle to the table surface. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is an overall side view of the present invention.

[0018] Figure 2This is a longitudinal sectional view of the present invention.

[0019] Figure 3 yes Figure 2 Enlarged view of a local structure.

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the guide channel of this utility model. Detailed Implementation

[0021] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0024] Furthermore, the terms indicating orientation, such as "up," "down," "left," "right," "upper end," "lower end," and "longitudinal," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] The preferred embodiment of this utility model is a leak-proof sewage sampling and transfer device, such as... Figure 1-4As shown, this device includes a bottle body 10, which is a cylindrical transparent structure, generally made of polycarbonate, with a volume between 500mL and 2L, and fluorescent graduation lines (minimum graduation 50mL) printed on its outer wall. The top of the bottle body 10 is equipped with an outwardly expanding funnel-shaped flow guide hood 20. The smaller end of the flow guide hood 20 is coaxially and integrally connected to the upper opening of the bottle body 10. Specifically, the flow guide hood 20 has an inverted truncated cone structure, with its top diameter expanded to 1.5 times the diameter of the bottle body 10 (e.g., if the bottle body diameter is 100mm, then the diameter of the flow guide hood 20 is 150mm). The device also includes a liquid collection chamber 30, which is annular and coaxially sleeved on the upper end of the bottle body 10. The upper end face of the liquid collection chamber 30 is in close contact with the lower end of the outer side wall of the flow guide shroud 20. The upper end of the liquid collection chamber 30 is provided with a flow guide groove 40 that penetrates its inner and outer side walls, which is used to guide the liquid droplets on the outer side wall of the flow guide shroud 20 into the liquid collection chamber 30. The device also includes a connecting assembly 50, through which the liquid collection chamber 30 is detachably connected to the flow guide shroud 20.

[0027] The device has a simple overall structure and is easy to use. The flow guide hood 20 with an outwardly expanding opening greatly facilitates the pouring of sample liquid, and the liquid collection chamber 30 can also prevent droplets on the outer wall of the flow guide hood 20 from flowing down the bottle body 10 onto the table.

[0028] In this embodiment, the outer surface of the flow guide hood 20 has a cone angle of 45° and is coated with a hydrophobic coating with a contact angle greater than 150°. Due to its superhydrophobic properties (contact angle ≥150°), the residual droplets on the outer surface of the flow guide hood 20 quickly coalesce into beads and slide back into the collection chamber 30 along the cone surface, reducing the amount of external liquid (residual amount <0.1mL). This process achieves drip-free sampling through passive physical protection. Compared with traditional sampling bottles, the amount of external liquid residue is reduced from an average of 8.7mL to less than 0.2mL, and the operation time is reduced by at least 5-10 seconds, taking into account both efficiency and cleanliness requirements.

[0029] In this embodiment, the cross-section of the guide channel 40 is V-shaped. Multiple guide channels 40 are provided and are evenly arranged along the circumference of the liquid collection cavity 30. The wall between two guide channels 40 is V-shaped with its smaller end facing outward, thereby preventing droplets flowing up and down the outer wall of the guide cover 20 from flowing downward from the position between the two guide channels 40 onto the bottle body 10.

[0030] In this embodiment, a return flow hole 60 is provided on the side wall of the bottle body 10, and a liquid outlet hole 70 communicating with the return flow hole 60 is provided on the inner side wall of the liquid collection chamber 30. A sealing ring 80 surrounding the liquid outlet hole 70 is provided on the side wall of the liquid collection chamber 30. The sealing ring 80 is an O-ring silicone sealing ring 80 with a compression of approximately 1.5 mm. Through the cooperation of the liquid outlet hole 70 and the return flow hole 60, the liquid in the liquid collection chamber 30 can be reintroduced into the bottle body 10. Specifically, the direction of pouring the sample can be marked on the bottle body 10, with the two ends of a diameter passing through the return flow hole 60 as the front and back directions. This makes it easier to adjust the return flow hole 60 to the rear side when pouring the bottle body 10, preventing liquid from flowing back from the return flow hole 60 and causing leakage.

[0031] In this embodiment, the bottom surface of the inner cavity of the liquid collection chamber 30 is an inclined annular surface with an inclination of approximately 5°. The liquid outlet hole 70 is located at the lowest point of the bottom surface of the liquid collection chamber 30 and is flush with it, so as to facilitate timely introduction of the sample into the return flow hole 60 and avoid accumulation inside the liquid collection chamber 30.

[0032] In this embodiment, the upper end of the liquid collection chamber 30 is open; the connecting component 50 includes an annular positioning groove 51 and an annular rib 52 vertically disposed on the outer wall of the guide cover 20; the annular rib 52 is coaxially disposed with the bottle body 10 and its lower end extends to the outer side of the bottle body 10. The gap between the annular rib 52 and the outer wall of the bottle body 10 forms the annular positioning groove 51. When assembled in place, the inner wall of the liquid collection chamber 30 is tightly inserted into the annular positioning groove 51, thereby fixing the liquid collection chamber 30 on the bottle body 10. Furthermore, the minimum inner diameter of the liquid collection chamber 30 is slightly smaller than the outer diameter of the bottle body 10, and the fitting depth is 8+0.1 / -0.1mm, so that when assembled in place, the liquid collection chamber can be tightly attached to the outer wall of the bottle body 10 to prevent accidental detachment during operation.

[0033] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A leak-proof sewage sampling and transfer device, characterized in that, The bottle includes a bottle body, the top of which is provided with an outwardly expanding funnel-shaped flow guide, the smaller end of which is coaxially connected to the upper opening of the bottle body; The liquid collection chamber is annular and coaxially sleeved on the upper end of the bottle body. The upper end face of the liquid collection chamber is in close contact with the lower end of the outer side wall of the flow guide. The upper end of the liquid collection chamber is provided with a flow guide groove that penetrates its inner and outer side walls to guide the liquid droplets on the outer side wall of the flow guide into the liquid collection chamber. A connecting assembly is provided, through which the liquid collection chamber is detachably connected to the flow guide cover.

2. The anti-drip sewage sampling and transfer device according to claim 1, characterized in that, The outer surface of the fairing is coated with a hydrophobic coating with a contact angle greater than 150°.

3. The anti-drip sewage sampling and transfer device according to claim 1, characterized in that, The cross-section of the guide channel is V-shaped, and multiple guide channels are provided and evenly arranged along the circumference of the liquid collection cavity.

4. The anti-drip sewage sampling and transfer device according to claim 3, characterized in that, The wall between two adjacent guide channels is V-shaped with its smaller end facing outwards.

5. The anti-drip sewage sampling and transfer device according to claim 1, characterized in that, The bottle body has a return flow hole on its side wall, and the liquid collection cavity has a liquid outlet hole on its inner side wall corresponding to the return flow hole. The liquid collection cavity has a sealing ring surrounding the liquid outlet hole on its side wall.

6. The anti-drip sewage sampling and transfer device according to claim 5, characterized in that, The bottom surface of the inner cavity of the liquid collection chamber is an inclined annular surface, and the liquid outlet hole is located at the lower end of the bottom surface of the liquid collection chamber and is flush with it.

7. The anti-drip sewage sampling and transfer device according to any one of claims 1-6, characterized in that, The upper end of the liquid collection chamber is open; the connecting assembly includes an annular positioning groove and an annular rib vertically arranged on the outer wall of the flow guide; the annular rib is coaxially arranged with the bottle body and its lower end extends to the outer side of the bottle body, and the gap between the annular rib and the outer wall of the bottle body forms the annular positioning groove. When assembled in place, the inner wall of the liquid collection chamber is securely inserted into the annular positioning groove.

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