Constant-voltage current-sharing multifunctional sampling device

Abstract

The utility model discloses a constant-pressure flow-equalizing multifunctional sampling device which comprises a sampling pump, a constant-flow sampler, a constant-liquid-level flow cell, a regulating valve and a central control device, the water inlet end of the sampling pump is connected with a sampling position, and the constant-flow sampler is connected with the water outlet end of the sampling pump through a conveying pipeline; the constant-liquid-level flow cell is arranged between the sampling pump and the constant-current sampler and is mounted on the conveying pipeline, and the regulating valve is arranged between the sampling pump and the constant-liquid-level flow cell and is mounted on the conveying pipeline; and the central control device is electrically connected with the sampling pump, the constant-current sampler, the constant-liquid-level flow cell and the regulating valve. According to the utility model, the sampling accuracy and reliability are ensured by a constant-pressure flow equalizing technology, the multi-point sampling precision is improved, the stable operation of the sampling device is ensured by an intelligent liquid level control and pollution discharge and backflow control mechanism, and the automation and intellectualization of the sampling process are realized by intelligent monitoring and adjustment.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality detection, in particular to a constant-pressure and equal-flow multifunctional sampling device. Background Art

[0002] In the field of water quality testing, the sampling device is a key device for obtaining water quality samples, and its performance directly affects the accuracy and reliability of the test results. Water quality testing is mainly to determine the types, concentrations and changing trends of pollutants in water. Constant pressure and flow are essential to ensure the accuracy of sampling. However, when sampling, due to the volatility of water flow, it is difficult to effectively maintain the stability of pressure and flow, which affects the accuracy of the sampling results. Secondly, in the process of multi-point sampling, it is easy to have inconsistent liquid levels, which reduces the sampling accuracy and makes it difficult to meet the needs of multi-point sampling. Utility Model Content

[0003] In view of this, the utility model aims to solve the deficiencies in the prior art and its main purpose is to provide a constant pressure and equal flow multifunctional sampling device, which solves the technical problems that in traditional sampling, the sampling device is prone to inconsistent liquid levels during multi-point sampling, which reduces the sampling accuracy and makes it difficult to meet the needs of multi-point sampling.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a constant-pressure and current-averaging multifunctional sampling device, comprising:

[0006] A sampling pump, wherein the water inlet end of the sampling pump is connected to a sampling location, and the sampling pump is used to extract water quality samples from the sampling location;

[0007] A constant flow sampler is connected to the water outlet of the sampling pump through a delivery pipeline, and the constant flow sampler is used to take multi-point constant flow samples of the water quality sample and collect water quality data of the water quality sample;

[0008] A constant liquid level circulation pool is arranged between the sampling pump and the constant flow sampler and installed on the delivery pipeline;

[0009] A regulating valve is arranged between the sampling pump and the constant liquid level circulation pool and installed on the delivery pipeline, and the regulating valve is used to adjust the flow rate of the water quality sample entering the sampling device;

[0010] The central control device is electrically connected with the sampling pump, the constant flow sampler, the constant liquid level circulation pool and the regulating valve.

[0011] As a preferred embodiment, a safety valve is also provided on the constant liquid level circulation pool, and the safety valve is electrically connected to the central control device. The safety valve is used to maintain a constant pressure environment of the constant liquid level circulation pool. An overflow pipeline is installed on the constant liquid level circulation pool, and the output end of the overflow pipeline is connected to the sampling point.

[0012] As a preferred solution, a pressure display is further provided between the regulating valve and the constant liquid level circulation pool, and the pressure display is used to monitor and display the system pressure of the sampling device in real time. The pressure display is electrically connected to the central control device, and a reflux branch is further provided between the pressure display and the constant liquid level circulation pool, one end of the reflux branch is connected to the delivery pipeline, and the other end is connected to the sampling point.

[0013] As a preferred solution, a first reflux control valve is further provided on the reflux branch pipe, and the first reflux control valve is electrically connected to the central control device.

[0014] As a preferred solution, a second reflux control valve is further provided between the constant liquid level circulation pool and the constant flow sampling component, the second reflux control valve is electrically connected to the central control device, and the second reflux control valve is installed on the delivery pipeline.

[0015] As a preferred solution, a plurality of sampling components are provided in the constant current sampler, and the sampling components are arranged in sequence along the flow direction for extracting the water quality sample. A sensor component is provided in the sampling component, and the sensor component is electrically connected to the central control device.

[0016] As a preferred solution, a sewage pipeline is installed at the bottom of the sampling element, a sewage control valve is installed on the sewage pipeline, the sewage control valve is electrically connected to the sensor element, and a liquid level threshold is preset in the sensor element.

[0017] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that it mainly has the following advantages:

[0018] 1. Realize constant pressure and flow control: By introducing constant pressure and flow technology, the problem of unstable pressure and flow caused by water flow fluctuations is effectively solved. The precise control of the central control device, the real-time adjustment of the regulating valve and the first reflux control valve, and the constant liquid level circulation pool are used to ensure the constant pressure and flow during the sampling process, thereby greatly improving the accuracy and reliability of the sampling results;

[0019] 2. Improved multi-point sampling accuracy: Multiple sampling components are arranged in sequence along the flow direction of the water quality samples, realizing multi-point sampling, making the sampling more comprehensive and extensive, and being able to more accurately reflect the water quality conditions. In addition, in conjunction with the constant liquid level flow pool, the sensor components are used to monitor the water quality data and liquid level height of the water quality samples in real time, ensuring the consistency of the multi-point sampling liquid level, and further improving the accuracy of multi-point sampling;

[0020] 3. Liquid level control and sewage discharge function: A sewage discharge pipeline is installed at the bottom of each sampling piece, and the sensor is electrically connected to the sewage discharge control valve to realize intelligent liquid level control. When the liquid level of the water sample in the sampling piece exceeds the preset liquid level threshold, the sewage discharge control valve automatically works to discharge excess water samples or impurities, ensuring the purity of the water quality in the sampling piece and the stability of the sampling accuracy;

[0021] 4. Backflow control mechanism: A pressure display is set between the regulating valve and the constant liquid level circulation pool, and connected to the sampling point through a backflow branch pipe. At the same time, a first backflow control valve is equipped, so that when the system pressure is too high, part of the water quality sample can be returned to the sampling point through the backflow branch pipe, further realizing the precise regulation of the system pressure and ensuring the safe and stable operation of the sampling device;

[0022] 5. Intelligent monitoring and adjustment: The entire sampling device uses a central control device to intelligently monitor and adjust each component, realizing the automation and intelligence of the sampling process, which not only improves the sampling efficiency, but also reduces the difficulty of operation, making the sampling process simpler and faster.

[0023] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a constant-pressure and current-averaging multifunctional sampling device according to an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 10. Sampling pump; 11. Delivery pipeline;

[0027] 20. Sampling place;

[0028] 30. Constant current sampler; 31. Sampling piece; 32. Sewage pipe; 33. Sewage control valve;

[0029] 40. Constant liquid level circulation pool; 41. Safety valve; 42. Overflow pipeline;

[0030] 50. Regulating valve;

[0031] 60. Pressure display;

[0032] 70. Second reflux control valve;

[0033] 80. Reflux branch pipe; 81. First reflux control valve. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0036] In water quality testing, the performance of the sampling device is directly related to the accuracy and reliability of the test results. The core goal is to measure the types, concentrations and changing trends of pollutants in water. Stable pressure and flow are key factors to ensure sampling accuracy. However, due to the volatility of water flow, it becomes difficult to maintain constant pressure and flow, which in turn affects the accuracy of sampling results. At the same time, the inconsistency of liquid level during multi-point sampling also reduces the sampling accuracy, making it difficult to meet the professional requirements of multi-point sampling.

[0037] To solve the above problems, please refer to Figure 1 The present invention provides a constant-voltage and current-averaging multifunctional sampling device, comprising:

[0038] The sampling pump 10 has a water inlet end connected to a sampling location 20 . The sampling pump 10 is used to extract water quality samples from the sampling location 20 to ensure efficient and stable sampling.

[0039] The constant flow sampler 30 is connected to the water outlet of the sampling pump 10 through the delivery pipeline 11. The constant flow sampler 30 is used to take multi-point constant flow samples of the water quality samples and collect water quality data of the water quality samples to avoid sampling errors caused by uneven flow.

[0040] The constant liquid level circulation pool 40 is arranged between the sampling pump 10 and the constant flow sampler 30, and is installed on the delivery pipeline 11. The constant liquid level circulation pool 40 can keep the water level in the delivery pipeline 11 constant, and effectively avoid the problem of reduced sampling accuracy due to inconsistent liquid levels in multi-point sampling.

[0041] The regulating valve 50 is arranged between the sampling pump 10 and the constant liquid level circulation pool 40 and installed on the delivery pipeline 11. The regulating valve 50 is used to adjust the flow rate of the water quality sample entering the sampling device. Through the precise flow regulation function, the water quality sample is stably supplied to the constant liquid level circulation pool 40, thereby improving the accuracy and reliability of sampling.

[0042] The central control device is electrically connected to the sampling pump 10, the constant flow sampler 30, the constant liquid level circulation pool 40 and the regulating valve 50, and is used to maintain the constant pressure and flow environment of the sampling device as well as fault control and feedback to ensure the smooth progress of the sampling process.

[0043] In this embodiment, a safety valve 41 is further provided on the constant liquid level circulation pool 40, and the safety valve 41 is electrically connected to the central control device. The safety valve 41 is used to maintain a constant pressure environment of the constant liquid level circulation pool 40. A safety threshold is set in the central control device. When the system pressure exceeds the safety threshold, the safety valve 41 automatically opens to release excess pressure, maintains a constant pressure environment of the constant liquid level circulation pool 40, and is free from flow fluctuations. The opening state of the safety valve 41 can also be fed back to the central control device in a timely manner for more precise control and adjustment. The constant liquid level circulation pool 40 An overflow pipe 42 is installed on it, and the output end of the overflow pipe 42 is connected to the sampling point 20. When the liquid level in the constant liquid level circulation pool 40 exceeds the set height, the excess water quality sample will flow out through the overflow pipe 42 to ensure that the water level of the constant liquid level circulation pool 40 is maintained within a stable range. The output end of the overflow pipe 42 is connected to the sampling point 20, so that the outflowing water quality sample can re-enter the sampling system to achieve the recycling of water resources. This design not only ensures the constant pressure and uniform flow performance of the sampling device, but also achieves resource conservation and environmental protection.

[0044] A pressure display 60 is also provided between the regulating valve 50 and the constant liquid level circulation pool 40. The pressure display 60 is used to monitor and display the system pressure of the sampling device in real time. The pressure display 60 is electrically connected to the central control device to facilitate timely acquisition and adjustment of the state of the sampling device and maintain a constant pressure and uniform flow sampling environment. A reflux branch pipe 80 is also provided between the pressure display 60 and the constant liquid level circulation pool 40. One end of the reflux branch pipe 80 is connected to the delivery pipeline 11, and the other end is connected to the sampling point 20. When the system pressure is too high, part of the water quality sample can be refluxed to the sampling point 20 through the reflux branch pipe 80, thereby adjusting the system pressure and ensuring the safe and stable operation of the sampling device. This design not only improves the reliability and safety of the sampling device, but also increases its flexibility and adaptability.

[0045] Furthermore, a first reflux control valve 81 is provided on the reflux branch 80, and the first reflux control valve 81 is electrically connected to the central control device. The first reflux control valve 81 is used to accurately control the opening and closing of the reflux branch 80 according to the instructions of the central control device. During the sampling process, when the system pressure exceeds the preset safety range, the central control device will send a signal to the first reflux control valve 81 to open it, so that part of the water quality sample will flow back to the sampling point 20 through the reflux branch 80, thereby reducing the system pressure and ensuring the safe and stable operation of the sampling device. The precise control of the first reflux control valve 81 makes the regulation of the system pressure more rapid and accurate, further improving the reliability and stability of the sampling device.

[0046] A second reflux control valve 70 is also provided between the constant liquid level circulation pool 40 and the constant current sampling component 31. The second reflux control valve 70 is electrically connected to the central control device. The second reflux control valve 70 is installed on the delivery pipeline 11. When the constant current sampling component 31 fails or requires maintenance, the second reflux control valve 70 can quickly respond to the instructions of the central control component to close or open the delivery pipeline 11 to prevent the water quality sample from continuing to flow to the constant current sampler 30, thereby preventing the reflux from damaging the sampling device system, ensuring the safety and stability of the sampling device, and further improving the efficiency and reliability of sampling.

[0047] Furthermore, a plurality of sampling components 31 are provided in the constant current sampler 30, and the sampling components 31 are arranged in sequence along the flow direction of the water quality samples to achieve multi-point sampling, thereby ensuring the extensiveness and representativeness of the water quality samples and understanding the water quality conditions more comprehensively and accurately. A sensor component is provided in the sampling component 31, and the sensor component is electrically connected to the central control component. The sensor component is used to detect the water quality data of the water quality sample and the liquid level height of the water quality sample in the sampling component 31 to ensure the accuracy and reliability of the sampling.

[0048] A sewage pipe 32 is installed at the bottom of the sampling piece 31. The sewage pipe 32 is used to remove impurities or excess water samples accumulated in the sampling piece 31. A sewage control valve 33 is installed on the sewage pipe 32. The sewage control valve 33 is electrically connected to the sensor. The sensor also has a preset liquid level threshold. When the liquid level of the water sample in the sampling piece 31 exceeds the liquid level threshold, the sewage control valve 33 works to open the sewage pipe 32 to discharge excess water samples or impurities in the sampling piece 31, ensuring that the sampling piece 31 is always in the best working state, avoiding interference of impurities on the sampling structure, and extending the service life of the sampling piece 31.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A constant pressure and current multifunctional sampling device, characterized in that: include: A sampling pump (10), wherein a water inlet end of the sampling pump (10) is connected to a sampling location (20), and the sampling pump (10) is used to extract a water quality sample from the sampling location (20); A constant flow sampler (30) is connected to the water outlet of the sampling pump (10) via a delivery pipeline (11), and the constant flow sampler (30) is used to perform multi-point constant flow sampling of the water quality sample and collect water quality data of the water quality sample; A constant liquid level circulation pool (40) is arranged between the sampling pump (10) and the constant flow sampler (30), and is installed on the delivery pipeline (11); A regulating valve (50) is arranged between the sampling pump (10) and the constant liquid level circulation pool (40) and installed on the delivery pipeline (11), and the regulating valve (50) is used to adjust the flow rate of the water quality sample entering the sampling device; The central control device is electrically connected to the sampling pump (10), the constant flow sampler (30), the constant liquid level circulation pool (40) and the regulating valve (50).

2. The constant-pressure and current-averaging multifunctional sampling device according to claim 1 is characterized in that: The constant liquid level circulation pool (40) is also provided with a safety valve (41), the safety valve (41) is electrically connected to the central control device, and the safety valve (41) is used to maintain a constant pressure environment of the constant liquid level circulation pool (40). An overflow pipeline (42) is installed on the constant liquid level circulation pool (40), and the output end of the overflow pipeline (42) is connected to the sampling point (20).

3. The constant-pressure and current-averaging multifunctional sampling device according to claim 1 is characterized in that: A pressure display (60) is also provided between the regulating valve (50) and the constant liquid level circulation pool (40). The pressure display (60) is used to monitor and display the system pressure of the sampling device in real time. The pressure display (60) is electrically connected to the central control device. A reflux branch pipe (80) is also provided between the pressure display (60) and the constant liquid level circulation pool (40). One end of the reflux branch pipe (80) is connected to the conveying pipeline (11), and the other end is connected to the sampling point (20).

4. The constant-pressure and current-averaging multifunctional sampling device according to claim 3 is characterized in that: The reflux branch pipe (80) is also provided with a first reflux control valve (81), and the first reflux control valve (81) is electrically connected to the central control device.

5. The constant-pressure and current-averaging multifunctional sampling device according to claim 1 is characterized in that: A second reflux control valve (70) is also provided between the constant liquid level circulation pool (40) and the constant flow sampling component (31), the second reflux control valve (70) is electrically connected to the central control component, and the second reflux control valve (70) is installed on the delivery pipeline (11).

6. The constant-pressure and current-averaging multifunctional sampling device according to claim 1, characterized in that: The constant current sampler (30) is provided with a plurality of sampling components (31), the sampling components (31) are arranged in sequence along the flow direction for extracting the water quality sample, and the sampling components (31) are provided with a sensor component, which is electrically connected to the central control component.

7. The constant-pressure and current-averaging multifunctional sampling device according to claim 6, characterized in that: A sewage discharge pipeline (32) is installed at the bottom of the sampling element (31), a sewage discharge control valve (33) is installed on the sewage discharge pipeline (32), the sewage discharge control valve (33) is electrically connected to the sensor element, and a liquid level threshold is also preset in the sensor element.

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