Sampling device of turbidity meter

Abstract

The turbidity meter sampling device comprises a liquid storage tank and a sampling pipe, the liquid storage tank is provided with a liquid inlet, a liquid outlet, an exhaust port and a drain outlet, the inner wall of the liquid storage tank is connected with a spiral flow channel circling from top to bottom, the liquid inlet is located in the upper portion of the liquid storage tank and connected with the spiral flow channel, and the liquid outlet is located in the position close to the bottom of the liquid storage tank. The liquid outlet is connected with a turbidity meter through a liquid discharge pipe, the exhaust port is located at the top end of the liquid storage tank, and the drain outlet is located at the bottom of the liquid storage tank. One end of the sampling pipe extends into the pipeline to be sampled, the other end of the sampling pipe is connected with a liquid inlet of the liquid storage tank, and a sampling opening of the sampling pipe faces upwards and is in a spoon shape. According to the invention, sampling is convenient, bubbles mixed in liquid can be conveniently discharged, sufficient time is provided for gas-liquid separation, and the measurement precision of the turbidity meter is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of turbidity detection, and in particular to a turbidity meter sampling device and method. Background Art

[0002] When testing liquid turbidity, it's necessary to sample the liquid within the sampling pipe. Currently, turbidimeters on the market are generally designed for a full pipe. The sample to be tested should be pure liquid, free of bubbles, as bubbles can affect test accuracy. If the pipe contains a gas-liquid mixture, the turbidimeter's operating requirements will not be met, and the test results will be inaccurate. Furthermore, the presence of numerous bubbles can cause unstable flow rates within the pipe, making direct liquid sampling impossible.

[0003] Typically, the sampling pipe is arranged horizontally, and bubbles will automatically float upwards, so there are very few bubbles in the liquid being sampled, and there is no need to exhaust. If the sampling pipe is arranged vertically, it is not conducive to gas-liquid separation, and the sampled liquid will still be a gas-liquid mixture, which will also lead to inaccurate turbidity test data. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related art to at least a certain extent. To this end, an embodiment of the present invention provides a turbidity meter sampling device that can discharge bubbles in a liquid to be tested and improve the accuracy of turbidity detection.

[0005] An embodiment of the present invention provides a turbidity meter sampling device, comprising: a liquid storage tank and a sampling tube, the liquid storage tank having a liquid inlet, a liquid discharge port, an exhaust port and a sewage discharge port, the inner wall of the liquid storage tank being connected to a spiral flow channel spiraling from top to bottom, the liquid inlet being located at the upper part of the liquid storage tank and connected to the spiral flow channel, the liquid discharge port being located near the bottom of the liquid storage tank, the liquid discharge port being connected to the turbidity meter through a liquid discharge pipe, the liquid discharge pipe being connected to a first control valve, the exhaust port being located at the top of the liquid storage tank, the sewage discharge port being located at the bottom of the liquid storage tank, the sewage discharge port being connected to the sewage discharge pipe, and the sewage discharge pipe being connected to a second control valve.

[0006] One end of the sampling tube extends into the interior of the pipeline to be sampled, and the end of the sampling tube extending into the pipeline to be sampled has a sampling port, which is close to the inner wall of the pipeline to be sampled. The side wall of the pipeline to be sampled has a first socket for inserting the sampling tube. The other end of the sampling tube is connected to the liquid inlet of the liquid storage tank to send the taken liquid sample into the liquid storage tank. The sampling tube is connected to a third control valve.

[0007] In some embodiments, the spiral flow channel is a spiral groove structure, and the upper part of the spiral flow channel is open.

[0008] In some embodiments, the spiral flow channel is fixedly connected to the inner wall of the liquid storage tank by welding.

[0009] In some embodiments, the sampling port of the sampling tube is upward and spoon-shaped, the top of the sampling port is located at the axis of the pipe to be sampled, and the bottom of the sampling port is close to the inner wall of the pipe to be sampled.

[0010] In some embodiments, the sampling tube is tilted upward at one end extending into the pipeline to be sampled.

[0011] In some embodiments, the third control valve is a T-type three-way reversing valve having a first port, a second port and a third port. The first port and the second port are connected to the sampling tube in the horizontal direction, and the third port is vertically downward. The third port is connected to the return liquid tube, and the return liquid tube is inserted into the pipe to be sampled so as to discharge the liquid in the sampling tube back to the pipe to be sampled in time when not being tested.

[0012] In some embodiments, the end of the liquid return tube inserted into the pipe to be sampled is tilted downward.

[0013] In some embodiments, a sealing ring is also included. The material of the sealing ring is soft silicone with a hardness of less than 30A. The sealing ring is mounted on the sampling tube and adhered to the first socket of the pipe to be sampled. There is a through hole in the middle of the sealing ring for the sampling tube to pass through. The inner diameter of the through hole is slightly smaller than the outer diameter of the sampling tube. After the sampling tube passes through the through hole, it fits tightly with the sealing ring.

[0014] In some embodiments, the bottom of the liquid storage tank is a conical bottom, and the sewage outlet is located at the center of the conical bottom.

[0015] In some embodiments, a liquid level sensor is provided in the liquid storage tank to maintain the liquid level in the liquid storage tank at no more than 1 / 3 of the internal height of the liquid storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings.

[0017] in:

[0018] Figure 1 Schematic diagram of the structure of the turbidity meter sampling device in an embodiment of the present invention;

[0019] Reference numerals:

[0020] 1. Pipeline to be sampled; 2. Sampling port; 3. Sealing ring; 4. Sampling tube; 5. Third control valve; 6. Liquid return pipe; 7. Exhaust pipe; 8. Liquid storage tank; 9. Spiral flow channel; 10. Drain pipe; 11. Second control valve; 12. Drain pipe; 13. First control valve; 14. Turbidimeter. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0022] The turbidity meter sampling device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0023] like Figure 1 As shown, an embodiment of the present invention proposes a turbidity meter sampling device, including: a liquid storage tank 8 and a sampling tube 4, the liquid storage tank 8 has a liquid inlet, a liquid discharge port, an exhaust port and a sewage discharge port, the inner wall of the liquid storage tank 8 is connected with a spiral flow channel 9 spiraling from top to bottom, the liquid inlet is located at the upper part of the liquid storage tank 8 and is connected to the spiral flow channel 9, the liquid discharge port is located near the bottom of the liquid storage tank 8, the liquid discharge port is connected to the turbidity meter 14 through the liquid discharge pipe 12, the liquid discharge pipe 12 is connected to a first control valve 13, the exhaust port is located at the top of the liquid storage tank 8, the sewage discharge port is located at the bottom of the liquid storage tank 8, the sewage discharge port is connected to the sewage pipe 10, and the sewage pipe 10 is connected to a second control valve 11.

[0024] One end of the sampling tube 4 extends into the interior of the pipeline to be sampled 1, and the end of the sampling tube 4 extending into the pipeline to be sampled 1 has a sampling port 2, which is close to the inner wall of the pipeline to be sampled 1. The side wall of the pipeline to be sampled 1 has a first socket for inserting the sampling tube 4. The other end of the sampling tube 4 is connected to the liquid inlet of the liquid storage tank 8 to send the taken liquid sample into the liquid storage tank 8. The sampling tube 4 is connected to a third control valve 5.

[0025] This embodiment of the present invention utilizes a liquid storage tank 8 and a vent within the tank to facilitate the removal of bubbles contained within the liquid. A rotating flow channel is provided to allow the liquid to slowly flow along the channel to the bottom of the tank 8, providing ample time for gas-liquid separation. Liquid flows downward to form the liquid to be tested, while gas flows upward through the vent. A sewage outlet is also provided for regular sewage removal. The outlet can also be used to remove residual liquid after sampling, preventing contamination of newly sampled liquid and potentially affecting test results.

[0026] The embodiment of the present invention satisfies various sampling pipes 1 without changing the layout and original operating conditions, solves the problem of bubbles in the sampled liquid, improves the measurement accuracy of the turbidity meter 14, has a simple design, low material loss, small installation space, and is easy to install and manufacture.

[0027] Furthermore, the exhaust port is connected to an exhaust pipe 7, and an air pump is connected to the exhaust pipe 7 to improve the efficiency of gas exhaust.

[0028] Furthermore, the exhaust pipe 7 is connected to a gas purification device to prevent the separated gas from becoming harmful gas and polluting the atmosphere.

[0029] In some alternative embodiments, the spiral flow channel 9 can also be realized by turning a rotating groove on the inner wall of the liquid storage tank 8. In order to prevent the liquid from flowing directly from the outside of the rotating groove to the bottom of the liquid storage tank 8 without flowing down the rotating groove, a rotating groove can be turned downward at the bottom of the rotating groove.

[0030] In some embodiments, the spiral flow channel 9 is a spiral groove structure, and the upper part of the spiral flow channel 9 is open.

[0031] In some embodiments, the spiral flow channel 9 is fixedly connected to the inner wall of the liquid storage tank 8 by welding.

[0032] In some embodiments, the sampling port 2 of the sampling tube 4 is upward-facing and spoon-shaped, with the top of the sampling port 2 located at the axis of the pipe 1 to be sampled, and the bottom of the sampling port 2 close to the inner wall of the pipe 1 to be sampled. Designing the sampling port 2 as a spoon-shaped structure can increase the sampling area. Placing the sampling port 2 close to the inner wall of the pipe 1 to be sampled can collect liquid flowing down the inner wall of the pipe 1 to be sampled, effectively solving the problem of insufficient medium in the sampling tube 4.

[0033] In some embodiments, the sampling tube 4 is tilted upward at one end thereof extending into the pipe to be sampled 1, so that the liquid falling into the sampling port 2 can flow into the sampling tube 4, thereby achieving rapid sampling.

[0034] In some embodiments, the third control valve 5 is a T-type three-way reversing valve having a first port, a second port, and a third port. The first port and the second port are horizontally connected to the sampling tube 4, and the third port is vertically downward. The third port is connected to the return liquid tube 6, which is inserted into the pipeline to be sampled 1 to discharge the liquid in the sampling tube 4 back to the pipeline to be sampled 1 in a timely manner when not being tested. The pipeline to be sampled 1 has a second socket for inserting the return liquid tube 6.

[0035] When sampling is not required, the T-type three-way reversing valve is set to have liquid inlet at the first port and liquid outlet at the third port. When sampling is required, the T-type three-way reversing valve is switched to have liquid inlet at the first port and liquid outlet at the second port.

[0036] Furthermore, the sampling tube 4 and the liquid return tube 6 are made of stainless steel, which can prevent them from rusting due to long-term immersion or flushing in liquid, thereby preventing them from contaminating the liquid.

[0037] In some embodiments, the end of the liquid return tube 6 inserted into the pipe to be sampled 1 is tilted downward to facilitate rapid discharge of liquid in the liquid return tube 6 into the pipe to be sampled 1 and avoid liquid retention.

[0038] In some embodiments, the turbidity meter sampling device also includes a sealing ring 3, the material of the sealing ring 3 is soft silicone with a hardness of less than 30A, the sealing ring 3 is sleeved on the sampling tube 4 and adhered to the first socket of the pipe to be sampled 1, and the middle of the sealing ring 3 has a through-hole for the sampling tube 4 to pass through, the inner diameter of the through-hole is slightly smaller than the outer diameter of the sampling tube 4, and the sampling tube 4 fits tightly with the sealing ring 3 after passing through the through-hole.

[0039] In some embodiments, the bottom of the liquid storage tank 8 is conical, and the sewage outlet is located at the center of the conical bottom, so that the sludge and impurities in the liquid are collected in the sewage pipe 10 for subsequent discharge.

[0040] In some embodiments, a liquid level sensor is provided in the liquid storage tank 8 to maintain the liquid level in the liquid storage tank 8 not exceeding 1 / 3 of the internal height of the liquid storage tank 8 .

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0043] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0044] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0045] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0046] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A turbidity meter sampling device, characterized in that: include: A liquid storage tank, the liquid storage tank having a liquid inlet, a liquid discharge port, an exhaust port and a sewage discharge port, the inner wall of the liquid storage tank being connected to a spiral flow channel spiraling from top to bottom, the liquid inlet being located at the upper portion of the liquid storage tank and connected to the spiral flow channel, the liquid discharge port being located near the bottom of the liquid storage tank, the liquid discharge port being connected to a turbidity meter via a liquid discharge pipe, the liquid discharge pipe being connected to a first control valve, the exhaust port being located at the top of the liquid storage tank, the sewage discharge port being located at the bottom of the liquid storage tank, the sewage discharge port being connected to a sewage discharge pipe, and the sewage discharge pipe being connected to a second control valve; A sampling tube, one end of the sampling tube extends into the interior of the pipeline to be sampled, the end of the sampling tube extending into the pipeline to be sampled has a sampling port, the sampling port is close to the inner wall of the pipeline to be sampled, the side wall of the pipeline to be sampled has a first socket for inserting the sampling tube, the other end of the sampling tube is connected to the liquid inlet of the liquid storage tank to deliver the taken liquid sample into the liquid storage tank, and the sampling tube is connected to a third control valve.

2. The turbidity meter sampling device according to claim 1, characterized in that: The spiral flow channel is a spiral groove structure, and the upper part of the spiral flow channel is open.

3. The turbidity meter sampling device according to claim 2, characterized in that: The spiral flow channel is fixedly connected to the inner wall of the liquid storage tank by welding.

4. The turbidity meter sampling device according to claim 1, characterized in that: The sampling port of the sampling tube faces upward and is spoon-shaped. The top of the sampling port is located at the axis of the pipeline to be sampled, and the bottom of the sampling port is close to the inner wall of the pipeline to be sampled.

5. The turbidity meter sampling device according to claim 1, characterized in that: The sampling tube is tilted upward at one end thereof extending into the pipeline to be sampled.

6. The turbidity meter sampling device according to claim 1, characterized in that: The third control valve is a T-type three-way reversing valve having a first port, a second port and a third port. The first port and the second port are connected to the sampling tube in the horizontal direction, and the third port is vertically downward. The third port is connected to the return liquid tube, and the return liquid tube is inserted into the pipe to be sampled so as to discharge the liquid in the sampling tube back into the pipe to be sampled in time when not being tested.

7. The turbidity meter sampling device according to claim 6, characterized in that: The end of the liquid return pipe inserted into the pipe to be sampled is tilted downward.

8. The turbidity meter sampling device according to claim 1, characterized in that: It also includes a sealing ring, which is made of soft silicone with a hardness of less than 30A. The sealing ring is sleeved on the sampling tube and adhered to the first socket of the pipe to be sampled. The middle of the sealing ring has a through hole for the sampling tube to pass through. The inner diameter of the through hole is slightly smaller than the outer diameter of the sampling tube. After the sampling tube passes through the through hole, it fits tightly with the sealing ring.

9. The turbidity meter sampling device according to claim 1, characterized in that: The bottom of the liquid storage tank is a conical bottom, and the sewage outlet is located at the center of the conical bottom.

10. The turbidity meter sampling device according to claim 1, characterized in that: A liquid level sensor is provided in the liquid storage tank to maintain the liquid level in the liquid storage tank at no more than 1 / 3 of the internal height of the liquid storage tank.

Images