Water sampling and mixing system and method for outdoor water quality automatic detection station
By designing a water sampling mixing system in an automatic water quality detection station, and using the automatic collection and mixing process controlled by timer, the problem that conventional monitoring systems cannot capture the secret discharge or leakage of water bodies is solved, and the representativeness of the monitoring results is improved and accuracy.
Patent Information
- Application Number
- CN201810941494.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-08-17
- Publication Date
- 2024-12-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The conventional automatic water quality monitoring station lacks a mixed sample process, resulting in a long monitoring gap and the inability to capture the phenomenon of secret discharge or leakage of water bodies, resulting in a lack of representativeness in the detection data and cannot reflect the actual situation of water quality.
A water sampling and mixing system for outdoor water quality automatic detection stations is designed, including mixing cups, water sampling pipes and timers, through front pipelines, sampling pipes, overflow pipes, vents and drain pipes. Combined, the opening cycle of the water inlet valve, backflush valve, sampling valve and drain valve is controlled by using a timer to realize the automatic time-dividing and sample mixing process, ensuring that each monitoring object is within the interval between two water collections. Mix water samples.
By collecting and mixing water samples in time periods, the representativeness of the monitoring results is improved, and the comprehensive water quality status during the monitoring blank period can be effectively reflected, reducing the impact of the water discharge or leakage of water on the detection results.
Smart Images
Figure CN108827713B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of environmental protection water quality monitoring, and in particular to a water sampling and mixing system for an outdoor water quality automatic detection station and a water sampling and mixing method for an outdoor water quality automatic detection station. Background Art
[0002] With the development of science and technology, environmental protection has received more and more attention. As a sub-sector of environmental protection, the water quality monitoring industry has also attracted more and more attention from the public. Conventional water quality automatic monitoring station sampling systems do not have a mixed sampling process. The general standard sampling monitoring cycle is once every 4 hours, and the monitoring interval is long. In the interval between two water sampling monitoring, if there is any secret discharge or leakage of the measured water body, it cannot be captured, making the monitored data unrepresentative and unable to monitor the actual nature of the water quality. Summary of the invention
[0003] The present invention is based on at least one of the above-mentioned technical problems and proposes a new water sampling and mixing scheme for outdoor water quality automatic detection stations, so that the monitoring object each time is a mixed water sample within the interval time period between two water sampling monitorings, which can reflect the comprehensive status of water quality in the monitoring blank time period to a certain extent.
[0004] After further research on the present invention, the inventors found that during use, the conventional water quality automatic monitoring station sampling system does not have a mixed sample process. The national site standard detection cycle is usually adopted, and the water quality of the test site is sampled once every 4 hours. The water sample of this period is directly used for detection. If there is any secret discharge or leakage of the water body to be tested during the 4-hour interval, it is easy to fail to detect it. This will make the water sample to be tested lack representativeness and cannot reflect the comprehensive condition of the water quality during the monitoring blank time period.
[0005] In view of this, the present invention proposes a new water sampling and mixing system for an outdoor water quality automatic detection station, comprising: a mixing cup, the mixing cup is provided with a water inlet, an overflow port and a drain port; a water sampling pipeline, comprising a front pipeline, a sampling tube, an overflow pipe, a vent pipe and an emptying pipe, the water sampling pipeline is connected to a water sampling pump through the front pipeline, the front pipeline comprises a water inlet pipe and a backwash pipe, the water inlet pipe is provided with a water inlet valve, the backwash pipe is provided with a backwash valve, the water inlet pipe is connected to the backwash pipe and is connected to the sampling tube, the sampling tube is provided with a sampling valve, the The other end of the sampling tube is connected to the water inlet, one end of the drain pipe is connected to the drain outlet, the drain pipe is provided with a drain valve, one end of the overflow pipe is connected to the overflow port, the other end of the overflow pipe is connected to the drain pipe, one end of the ventilation pipe is connected to the overflow pipe, and the other end of the ventilation pipe is connected to the water inlet pipe; a timer, the timer is connected to the water inlet valve, the recoil valve, the sampling valve and the drain valve, and is used to control the opening cycle and opening times of the water inlet valve, the recoil valve, the sampling valve and the drain valve.
[0006] In this technical solution, an inlet pipe and a backwash pipe are arranged on the front pipeline. The inlet valve and the backwash valve arranged on the inlet pipe and the backwash pipe can, when opened, use a water sampling pump to pump water, so that water enters the water inlet pipe and flows out from the backwash pipe, thereby cleaning the front pipeline and avoiding blockage of the front pipeline; the drain pipe can be connected to the mixing cup in combination with the inlet pipe and the sampling pipe, and water is pumped by the water sampling pump to clean the mixing cup, thereby preventing impurities in the mixing cup from affecting the detection results; the timer is connected to the inlet valve, the backwash valve, the sampling valve and the drain valve, so that the automatic opening and closing of the inlet valve, the backwash valve, the sampling valve and the drain valve can be controlled in time periods according to the mixing cycle and mixing time set by the user on the timer, thereby realizing automatic water sampling in time periods and mixing, so that the monitoring object each time is a mixed water sample within the interval time period between two water sampling monitorings.
[0007] In the above technical solution, preferably, a partition is further provided in the mixing cup to separate the overflow port and the drain port from the water inlet, and a filter screen is provided on the upper portion of the partition.
[0008] In the above technical solution, preferably, manual valves are provided on both the sampling tube and the ventilation tube.
[0009] In the above technical solution, preferably, the head ends of the water inlet pipe and the backwash pipe, and the end of the overflow pipe are all provided with flexible joints.
[0010] In the above technical solution, preferably, the mixing cup is made of transparent material.
[0011] In this technical solution, the transparent mixing cup allows the user to directly observe the mixing conditions in the mixing cup.
[0012] According to a second aspect of the present invention, a water sampling and mixing method for an outdoor water quality automatic detection station is proposed, comprising: a first step of detecting a sample mixing cycle and a sample mixing number preset by a user in the timer; a second step of obtaining a pipeline flushing time point, a sample mixing cup cleaning time point and a water storage start time point according to the sample mixing cycle; a third step of, when it is detected that the timer runs to the pipeline flushing time point, starting the water sampling pump, the water inlet valve and the backflush valve to flush the front pipeline; a fourth step of, when it is detected that the timer runs to the sample mixing time point In the first step, when the timer reaches the water storage start time point, the sampling valve and the drain valve are opened to clean the mixing cup; in the fifth step, when it is detected that the timer runs to the water storage start time point, the drain valve is closed, the mixing cup starts to store water, and a single injection of the mixing cycle is completed; in the sixth step, when it is detected that a single injection of the mixing cycle is completed, the third step, the fourth step and the fifth step are repeated within the mixing cycle until the detected number of mixing times is completed, wherein the drain valve is opened only for the first injection within the mixing cycle.
[0013] In this technical solution, the pipeline flushing time point, the mixing cup cleaning time point and the water storage start time point are obtained by detecting the mixing cycle and the number of mixing times preset by the user in the timer. The pipeline flushing time point, the mixing cup cleaning time point and the water storage start time point are configurable, and the time interval between the pipeline flushing time point, the mixing cup cleaning time point and the water storage start time point can be shortened, which can shorten the mixing cycle; when it is detected that one sampling of a single mixing cycle is completed, within a single mixing cycle, the water sampling pump, the water inlet valve, the backwash valve, and the emptying valve are repeatedly opened and closed until the mixing times are completed. The number of mixing times can be configured, so that the number of mixing times in a complete mixing cycle can be increased, the monitoring interval can be shortened, and the mixing frequency can be increased, which can effectively reduce the impact of the situation where the water body's secret discharge and leakage phenomena in the monitoring interval are ignored on the water quality detection, so that the monitoring results are representative and can reflect the comprehensive status of the water quality in the monitoring blank time period to a certain extent.
[0014] Through the above technical scheme, water samples from the area to be tested can be extracted in different time periods, and then mixed to form the water samples to be tested, so that the monitoring object each time is a mixed water sample within the time interval between two water sampling monitoring periods, which improves the representativeness of the monitoring results and can reflect the comprehensive status of water quality in the monitoring blank time period to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic structural diagram of a water sampling and mixing system for an outdoor water quality automatic detection station according to an embodiment of the present invention is shown;
[0016] Figure 2 A schematic side structural diagram of a water sampling and mixing system for an outdoor water quality automatic detection station according to another embodiment of the present invention is shown;
[0017] Figure 3 A schematic diagram of the top view of a water sampling and mixing system for an outdoor water quality automatic detection station according to another embodiment of the present invention is shown;
[0018] Figure 4 A schematic block diagram showing the connection between the timer according to the present invention and the water inlet valve, the backflush valve, the sampling valve and the drain valve is shown;
[0019] Figure 5 A schematic flow chart of a water sampling and mixing method for an outdoor water quality automatic detection station according to an embodiment of the present invention is shown. DETAILED DESCRIPTION
[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.
[0022] Combine Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The present invention is further described.
[0023] like Figures 1 to 4As shown, the water sampling and mixing system for an outdoor water quality automatic detection station according to an embodiment of the present invention comprises: a mixing cup 101, on which a water inlet 102, an overflow port 103 and a drain port 104 are provided; a water sampling pipeline, comprising a front pipeline, a sampling pipe 105, an overflow pipe 106, a vent pipe 107 and an emptying pipe 108, the water sampling pipeline is connected to a water sampling pump (not shown in the figure) through the front pipeline, the front pipeline comprises a water inlet pipe 109 and a backwash pipe 110, the water inlet pipe 109 is provided with a water inlet valve 111, the backwash pipe 110 is provided with a backwash valve 112, the water inlet pipe 109 and the backwash pipe 110 are connected and communicated with the sampling pipe 105, the sampling pipe 105 is provided with a sampling valve 113, the sampling pipe 1 The other end of 05 is connected to the water inlet 102, one end of the drain pipe 108 is connected to the drain outlet 104, the drain pipe 108 is provided with a drain valve 114, one end of the overflow pipe 106 is connected to the overflow port 103, the other end of the overflow pipe 106 is connected to the drain pipe 108, one end of the vent pipe 107 is connected to the overflow pipe 106, and the other end of the vent pipe 107 is connected to the water inlet pipe 109; a timer 115, the timer 115 is connected to the water inlet valve 111, the backflush valve 112, the sampling valve 113 and the drain valve 114, and is used to control the opening cycle and opening times of the water inlet valve 111, the backflush valve 112, the sampling valve 113 and the drain valve 114.
[0024] In the above technical solution, preferably, a partition 116 is further provided in the mixing cup 101 to separate the overflow port 103 and the drain port from the water inlet 102 , and a filter screen 117 is provided on the upper portion of the partition 116 .
[0025] In the above technical solution, preferably, a manual valve 118 is provided on both the sampling tube 105 and the ventilation tube 107 .
[0026] In the above technical solution, preferably, the head ends of the water inlet pipe 109 and the backwash pipe 110 , and the end of the overflow pipe 106 are all provided with a flexible joint 119 .
[0027] In the above technical solution, preferably, the mixing cup 101 is made of transparent material.
[0028] In this technical solution, a water inlet pipe 109 and a backwash pipe 110 are arranged on the front pipeline. The water inlet valve 111 and the backwash valve 112 arranged on the water inlet pipe 109 and the backwash pipe 110 can be opened to use a water sampling pump to pump water, so that water enters the water inlet pipe 109 and flows out from the backwash pipe 110, thereby cleaning the front pipeline and avoiding blockage of the front pipeline; the drain pipe 108 can be connected to the mixing cup 101 in combination with the water inlet pipe 109 and the sampling pipe 105, and the mixing cup 101 is cleaned by pumping water with a water sampling pump to prevent impurities in the mixing cup 101 from affecting the detection results. The timer 115 is connected to the water inlet valve 111, the backflush valve 112, the sampling valve 113 and the drain valve 114, so that the water inlet valve 111, the backflush valve 112, the sampling valve 113 and the drain valve 114 can be automatically opened and closed in different time periods according to the mixing cycle and mixing time set by the user on the timer 115, so as to realize the purpose of automatically collecting water samples in different time periods and mixing samples, so that the monitoring object each time is the mixed water sample within the interval time period between two water sampling monitoring; the mixing cup 101 made of transparent material is convenient for the user to directly observe the mixing situation in the mixing cup 101.
[0029] like Figure 5 As shown, a water sampling and mixing method for an outdoor water quality automatic detection station comprises:
[0030] Step 501, the first step is to detect the mixing cycle and the number of mixing times preset by the user in the timer;
[0031] Step 502, the second step, obtaining the pipeline flushing time point, the mixing cup cleaning time point and the water storage start time point according to the mixing cycle;
[0032] Step 503, the third step, when it is detected that the timer runs to the pipeline flushing time point, the water sampling pump, the water inlet valve and the backflush valve are turned on to flush the front pipeline;
[0033] Step 504, the fourth step, when it is detected that the timer runs to the mixing cup cleaning time point, the sampling valve and the drain valve are opened to clean the mixing cup;
[0034] Step 505, the fifth step, when it is detected that the timer runs to the water storage start time point, the drain valve is closed, the mixing cup starts to store water, and a single sample injection of the mixing cycle is completed;
[0035] Step 506, the sixth step, when it is detected that one injection of a single mixing cycle is completed, within the single mixing cycle, the third step, the fourth step and the fifth step are repeated until the detected number of mixing times is completed, wherein the drain valve is opened only at the first injection within the single mixing cycle.
[0036] In this technical solution, the pipeline flushing time point, the mixing cup cleaning time point and the water storage start time point are obtained by detecting the mixing cycle and the number of mixing times preset by the user in the timer. The pipeline flushing time point, the mixing cup cleaning time point and the water storage start time point are configurable, and the time interval between the pipeline flushing time point, the mixing cup cleaning time point and the water storage start time point can be shortened, which can shorten the mixing cycle; when it is detected that one sampling of a single mixing cycle is completed, within a single mixing cycle, the water sampling pump, the water inlet valve, the backwash valve, and the emptying valve are repeatedly opened and closed until the mixing times are completed. The number of mixing times can be configured, so that the number of mixing times in a complete mixing cycle can be increased, the monitoring interval can be shortened, and the mixing frequency can be increased, which can effectively reduce the impact of the situation where the water body's secret discharge and leakage phenomena in the monitoring interval are ignored on the water quality detection, so that the monitoring results are representative and can reflect the comprehensive status of the water quality in the monitoring blank time period to a certain extent.
[0037] In actual use, the user connects the water inlet pipe of the system to the water sampling pump, and the backwash pipe and the drain pipe are externally connected to the site to be tested; when water sampling and mixing begins, the front pipe is automatically flushed, the mixing cup is cleaned, and water begins to be stored in the mixing cup according to the preset mixing cycle in the detected timer, that is, the water sampling pump, the water inlet valve, and the backwash valve are first opened to flush the front pipe, and the flushing time is configurable. After the configured flushing time is completed, the backwash valve is closed, and the sampling valve and the drain valve are opened to clean the mixing cup, wherein the drain valve is only opened for the first sampling in a single mixing cycle, and the cleaning time is configurable. After the configured cleaning time is completed, the drain valve is closed, and the mixing cup begins to store water, wherein the mixing cycle and the number of mixing times are configurable, wherein, within a single mixing cycle, the above-mentioned actions within a mixing cycle are repeated until the set number of mixing times is completed, and a single water sampling and mixing process is completed.
[0038] The technical solution of the present invention is described in detail above in conjunction with the accompanying drawings. The technical solution of the present invention proposes a new water sampling and mixing system and method for an outdoor water quality automatic detection station, which can extract water samples from the area to be tested in time periods, and mix them to form water samples to be tested, so that each monitoring object is a mixed water sample within the time interval between two water sampling monitoring periods, which improves the representativeness of the monitoring results and can reflect the comprehensive status of the water quality in the monitoring blank time period to a certain extent.
[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A water sampling and mixing system for an outdoor water quality automatic detection station, characterized in that: include: A mixing cup, wherein the mixing cup is provided with a water inlet, an overflow port and a drain port; A water sampling pipeline, comprising a front pipeline, a sampling pipe, an overflow pipe, a vent pipe and an emptying pipe, wherein the water sampling pipeline is connected to a water sampling pump through the front pipeline, the front pipeline comprises a water inlet pipe and a backwash pipe, the water inlet pipe is provided with a water inlet valve, the backwash pipe is provided with a backwash valve, the water inlet pipe is connected to the backwash pipe and is connected to the sampling pipe, the sampling pipe is provided with a sampling valve, the other end of the sampling pipe is connected to the water inlet, one end of the emptying pipe is connected to the drain, the emptying pipe is provided with an emptying valve, one end of the overflow pipe is connected to the overflow, the other end of the overflow pipe is connected to the emptying pipe, one end of the vent pipe is connected to the overflow pipe, and the other end of the vent pipe is connected to the water inlet pipe; A timer, the timer is connected to the water inlet valve, the backflush valve, the sampling valve and the drain valve, and is used to control the opening cycle and opening times of the water inlet valve, the backflush valve, the sampling valve and the drain valve; A partition is also provided in the mixing cup to separate the overflow port and the drain port from the water inlet, and a filter screen is provided on the upper part of the partition; The sampling pipe and the ventilation pipe are both provided with manual valves.
2. The water sampling and mixing system for outdoor water quality automatic detection station according to claim 1 is characterized in that: The head ends of the water inlet pipe and the backwash pipe, and the tail end of the overflow pipe are all provided with flexible joints.
3. The water sampling and mixing system for outdoor water quality automatic detection station according to claim 1 is characterized in that: The sample mixing cup is made of transparent material.
4. A water sampling and mixing method for an outdoor water quality automatic detection station, using the water sampling and mixing system for an outdoor water quality automatic detection station according to any one of claims 1 to 3, characterized in that: include: The first step is to detect the mixing cycle and the number of mixing times preset by the user in the timer; The second step is to obtain the pipeline flushing time point, the mixing cup cleaning time point and the water storage start time point according to the mixing cycle; The third step is to start the water pump, the water inlet valve and the backflush valve to flush the front pipeline when it is detected that the timer runs to the pipeline flushing time point; Step 4, when it is detected that the timer reaches the mixing cup cleaning time point, the sampling valve and the drain valve are opened to clean the mixing cup; Step 5, when it is detected that the timer runs to the water storage start time point, the drain valve is closed, the mixing cup starts to store water, and a single sample injection of the mixing cycle is completed; Step 6. When it is detected that one injection of a single mixing cycle is completed, within the single mixing cycle, steps 3, 4, 5 and 6 are repeated until the detected number of mixing times is completed, wherein the drain valve is opened only for the first injection within the single mixing cycle.