CN201096655Y - A water quality monitoring percent sampler - Google Patents

Abstract

The utility model discloses a water quality monitoring proportion sampling meter, which comprises a constant-temperature cabinet. The utility model is characterized in that: an automatic monitoring device is arranged at upper part of the cabinet, a sampling bottle and a sample retaining bottle, the inlet end of the sampling bottle is connected with a to-be-tested water sample by a peristaltic pump, the outlet of the sampling bottle is divided into two ways, one way is that the water sample is discharged by discharge valve, the other way is that the water sample is led to the sample retaining bottle via the Peristaltic pump and an automatic positioning device. As adopting the structure, the prior instantaneous measurement monitoring is enhanced to the continuous full-process monitoring, moreover the utility model can realize equal proportional online with flow meter and water quality content analyzer, simultaneously the doubtful samples are retained. The entire water body flow and water quality content can be collected in one time, total amount of sludge discharge can be calculated intermittently. The utility model can be widely applied for online measurement monitoring in various production processes, sludge discharge openings or natural water bodies. The utility model has the advantages of simple and reasonable structure, simple operation, and wide application prospect.

Description

A proportional sampling instrument for water quality monitoring

technical field

The utility model relates to water quality detection equipment.

Background technique

In order to implement the strategy of sustainable economic development and protect the natural environment on which human beings depend, the state has continuously invested a lot of manpower and material resources to resolutely control the seriously polluted water environment, making various sewage treatment processes and facilities continuously put into operation. Playing an active role in water governance and environment. However, the existing water quality sampling equipment collects samples according to a certain time or flow rate and stores them at a constant temperature for manual sampling and analysis. It has not realized the linkage function with online automatic detection instruments such as COD instruments and the intelligent analysis function of retaining samples after exceeding the standard and qualified samples. The automatic sampling function of the system causes the water quality sampling and water quality monitoring equipment to operate independently, resulting in deviations between the measured data and the collected samples, so that water quality related data for reference cannot be accurately provided.

Contents of the invention

The utility model is to provide a proportional sampler for water quality monitoring, which can realize sampling in various ways such as flow rate sampling, timing sampling, manual sampling, automatic cleaning of pipelines, automatic measurement of water quality components, and automatic discharge of water samples. The water quality composition, flow rate, etc. are accurately recorded and collected and measured at one time, so as to overcome the disadvantages of the existing technology.

The purpose of this utility model is achieved in the following ways: this water quality monitoring proportional sampling instrument includes a constant temperature cabinet, which is characterized in that an automatic monitoring device is installed on the upper part of the cabinet, and sampling bottles and sample retention bottles are respectively installed in the cabinet. The inlet end of the bottle is connected with the test water sample through a peristaltic pump, and the outlet of the sampling bottle is divided into two paths, one path is discharged through the discharge valve, and the other path passes through the peristaltic pump and the automatic positioning device in turn and then passes into the retention sample bottle.

The automatic monitoring device is composed of a flow control unit, a central control unit, a wireless transmission unit, and a water quality component analysis unit. The wireless transmission unit adopts GRPS or GSM remote wireless transmission, and the water quality component analysis unit adopts an online automatic analysis instrument, thereby Realize functions such as remote control, online real-time measurement and data transmission.

A circulation homogenizer is connected between the peristaltic pump at the inlet end of the sampling bottle and the detection water sample, especially when the utility model is used for remote water quality monitoring, the monitored water source can be pumped into the circulation homogenizer through the primary sampling pump at the monitoring water sample end. The homogenizer is continuously circulated and homogenized, and then the homogenized water sample is pumped into the sampling bottle by a peristaltic pump.

The sampling bottle is a transparent bottle body with scales, an overflow pipe is arranged on the upper part of the sampling bottle, and an electromagnetic stirrer is arranged on the bottom.

The sample retention bottle is composed of an effective number of fan-shaped bottles, and each fan-shaped bottle is arranged to form a circular distribution.

The number of the sector bottles is preferably six to twenty-four.

The automatic positioning device includes an automatic positioning arm equipped with a stepping motor, the sampling pipeline is fixed on the positioning arm, and the end of the automatic positioning arm, that is, the outlet of the sampling pipeline communicates with the inlet of the circularly distributed sample bottle.

The automatic monitoring device involved in the utility model is composed of a flow control unit, a central control unit, a wireless transmission unit and a water quality component analysis unit.

The technological progress achieved by the utility model: due to the adoption of the structure of the utility model, the previous instantaneous measurement and monitoring can be upgraded to a continuous and uninterrupted whole-process monitoring process, and the equal-proportion connection with the flow meter and the water quality component analysis instrument can be realized, and at the same time Suspect samples are retained. The flow rate and water quality components of the entire monitored water body can be collected at one time, and the total amount of sewage discharge can be calculated continuously. It can be widely used in online measurement and monitoring of various production processes, sewage outlets or natural water bodies. And the structure is simple and reasonable, easy to operate, and has broad application prospects.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Figure 1 is a schematic diagram of the overall structure of the utility model.

FIG. 2 is a schematic diagram of the structure and principle of FIG. 1 .

Fig. 3 is a schematic diagram of the structure and principle of the utility model during remote monitoring.

Detailed ways

Embodiment 1: As shown in Fig. 1 and Fig. 2, this water quality monitoring proportional sampler includes a thermostatic cabinet 1 that can be refrigerated or heated, and a flow control unit and a central control unit are installed on the top of the cabinet 1. , a wireless transmission unit, and an automatic monitoring device composed of a water quality component analysis unit. A sampling bottle 4 and a retention sample bottle 2 are respectively installed in the cabinet 1. The sampling bottle 4 is a transparent bottle with a scale, and its inlet port 6 passes through the cabinet 1. The upper peristaltic pump 8 is connected with the detection water sample. The peristaltic pump 8 has the function of measuring the sampling volume. The outlet of the sampling bottle 4 is divided into two paths, one path is discharged through the discharge valve 9, and the other path is sequentially passed through the peristaltic pump 7 and the automatic positioning device. Pass into the retention sample bottle 2 at the bottom of the sampling bottle 4 . The upper part of the sampling bottle 4 is provided with an overflow pipe 5, and the bottom thereof is provided with a magnetic stirrer. The sample bottle 2 is composed of twenty-four sector bottles, and each sector bottle is arranged to form a circular distribution. The automatic positioning device includes an automatic positioning arm 3 equipped with a stepping motor, and the end of the automatic positioning arm 3 communicates with the inlets of the retaining sample bottles 2 distributed in a circular manner.

The above-mentioned sampling bottle 4, magnetic stirrer, discharge valve 9, automatic positioning arm 3, and sample retention bottle 2 are all arranged in a constant temperature cabinet 1, and it is best to maintain a constant temperature of 4°C ± 1°C in the cabinet during monitoring.

The flow meter of the measurement control unit and the water quality component analyzer of the water quality component analysis unit of the utility model realize equal proportion online, and the water flow rate is used as the original trigger signal, and the actions of the sampling mechanism and the water quality component analyzer change according to the change of the original trigger signal . In actual monitoring, the flow data is collected to the flow measurement control unit through the flow sensor installed above the monitored water body, and then the sampling frequency and sampling volume are determined by the central control unit, and the peristaltic pump 8 is controlled to perform quantitative sampling, and the collected samples enter After the sampling bottle 4, the magnetic stirrer at the bottom of the sampling bottle 4 starts to rotate and stir to make the time of collecting samples uniform. When the sample amount in the sampling bottle 4 reaches the set value of the controller, the central control unit forces the water quality component analysis unit to Start the measurement. After the measurement is over, the central control unit collects the data and compares it with the set value to judge. If it is qualified, it will control the discharge valve 9 to discharge; The arm 3 rotates to the entrance of a certain set sample bottle 2, at this time the peristaltic pump 7 starts to quantitatively collect unqualified samples into the sample bottle 2, and then controls the discharge valve 9 to discharge the remaining samples.

Sampling is carried out according to the sampling interval (1-9999 minutes can be set arbitrarily) set by the central control unit. When the sampling volume reaches the set requirement, the central control unit controls the water quality component analysis unit to measure the sample in the sampling bottle 4, and the measurement result If the requirements are met, the discharge valve 9 at the bottom of the sampling bottle 4 is opened to discharge the sample; if the requirements are not met, the peristaltic pump 7 is controlled to introduce the sample into the designated fan-shaped bottle in the sample bottle 2 through the positioning arm 3 .

Embodiment 2: The difference between this embodiment and Embodiment 1 is that the sample bottle 2 is composed of six fan-shaped bottles.

Embodiment 3: The difference between this embodiment and Embodiment 1 is that the sample bottle 2 is composed of twelve sector-shaped bottles.

Embodiment 4: As shown in Figure 3, the difference between this embodiment and Embodiment 1 is that when the utility model is used for remote water quality monitoring, a cycle is connected between the peristaltic pump 8 at the inlet end of the sampling bottle 4 and the monitoring water sample. The homogenizer 10, the primary sampling pump at the monitoring water sample end pumps the monitored water source into the circulating homogenizer 10 for continuous circulation homogenization, and then the homogeneous water sample is pumped into the sampling bottle 4 through the peristaltic pump 8 . This embodiment can meet the requirement of long-distance sampling, especially the requirement that the sampling suction distance is greater than 50 meters.

Claims (7)

1. A water quality monitoring proportional sampler, which comprises a constant temperature cabinet (1), is characterized in that an automatic monitoring device is installed on the top of the cabinet (1), and sampling bottles (4) are respectively installed in the cabinet (1) ), the sample bottle (2), the inlet (6) end of the sample bottle (4) is connected with the detection water sample by a peristaltic pump (8), the outlet of the sample bottle (4) is divided into two paths, and one path passes through the discharge valve ( 9) discharge, and the other path passes through the peristaltic pump (7) and the automatic positioning device successively and then passes into the sample retention bottle (2). 2. The proportional sampler for water quality monitoring according to claim 1, wherein the automatic monitoring device is composed of a flow control unit, a central control unit, a wireless transmission unit, and a water quality component analysis unit, and the wireless transmission unit adopts GRPS or GSM remote wireless transmission, the water quality component analysis unit adopts online automatic analysis instrument. 3. The proportional sampler for water quality monitoring according to claim 1, characterized in that a circulation homogenizer (10) is connected between the peristaltic pump (8) and the detection water sample. 4. The water quality monitoring proportional sampler according to claim 1, characterized in that the sampling bottle (4) is a transparent bottle with scale, the sampling bottle (4) top is provided with an overflow pipe (5), and the bottom is provided with There is an electromagnetic stirrer. 5. The proportional sampler for water quality monitoring according to claim 1, characterized in that the sample retention bottle (2) is composed of an effective number of sector-shaped bottles, and each sector-shaped bottle is arranged to form a circular distribution. 6. The proportional sampler for water quality monitoring according to claim 5, characterized in that there are six to twenty-four sector-shaped bottles. 7. The water quality monitoring proportional sampler according to claim 1, wherein said automatic positioning device comprises an automatic positioning arm (3) equipped with a stepping motor, the end of the automatic positioning arm (3) and the circular distribution The inlets of the sample retention bottles (2) are connected.

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