Portable municipal sewage time-sharing sampling equipment

Abstract

The utility model discloses a portable municipal sewage time-sharing sampling device which comprises a fixing frame, a sampling box and a sample storage box, the sampling box and the sample storage box are connected with the fixing frame, a plurality of sample storage bottles are arranged in the sample storage box, a confluence plate is arranged in the sampling box, the confluence plate is provided with a water inlet and a water outlet, a normally open solenoid valve is arranged on the water outlet, and the normally open solenoid valve is connected with the sampling box. A plurality of two-way electromagnetic valves are also connected to the confluence plate; outlets of the plurality of two-way electromagnetic valves are respectively connected with a plurality of sample storage bottles through water pipes; the device further comprises a submersible pump, the submersible pump is connected with the fixing frame through a lifting rope, and the water outlet end of the submersible pump is connected with a water inlet of the confluence plate through a water inlet pipe. A power supply is also arranged in the sampling box and is used for supplying power to the submersible pump and the two-way electromagnetic valve. According to the utility model, water samples can be collected according to different time periods and are stored in different sampling bottles, so that the time-space change of water quality can be accurately captured.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage sampling, and particularly relates to a portable municipal sewage time-sharing sampling device. Background Technique

[0002] With the development of intelligent monitoring of urban drainage pipe networks and the integrated management of "plants, networks, rivers, and lake banks", the demand of managers for mastering the temporal and spatial changes of water quality is becoming stronger and stronger. There is an urgent need for a sampling device that is as flexible as manual sampling and as intelligent as automatic sampling to meet diverse sampling requirements.

[0003] The water quality of the drainage pipe network has temporal differences. The concentration of indicators such as COD in the water quality of the sewage outlet varies to different degrees at different times such as morning, noon, evening, and late at night. To ensure the representativeness of the water quality analysis of the upstream and downstream pipe networks, the sampling plan requires staff to sample the monitoring points multiple times at different times of the day, and the sampling time points should also be consistent every day. This results in the staff having to travel back and forth to the same sampling point multiple times a day, which undoubtedly poses great challenges to the efficiency of manual sampling and the quality of personnel. The safety risk of the staff will also increase exponentially when sampling in a harsh environment.

[0004] Most of the existing water quality automatic sampling devices are water quality monitoring stations. Due to the large volume of the devices and the need for supporting power supply facilities and exclusive computer rooms, the coverage scenarios are few, and they cannot be used in small and non-powered municipal inspection wells. The existing new small sampling devices can only collect one bottle of water sample and cannot meet the requirement of sampling in multiple bottles at different times. Content of the Utility Model

[0005] The purpose of the utility model is to propose a portable municipal sewage time-sharing sampling device aiming at the deficiencies of the existing technology. This device can collect water samples at multiple time points according to the preset time and store them in different sampling bottles respectively. In addition, the device is also equipped with a cleaning function to clean the inlet pipeline and the outlet pipeline before and after sampling to avoid cross-contamination, thereby improving the accuracy and reliability of the collected water samples.

[0006] The technical purpose of the utility model is realized through the following technical solutions:

[0007] A portable municipal sewage time-sharing sampling device includes a fixing frame, a sampling box and a sample storage box connected to the fixing frame. A plurality of sample storage bottles are provided in the sample storage box. A confluence plate is provided in the sampling box. The confluence plate is provided with a water inlet and a water outlet. A normally open solenoid valve is arranged on the water outlet. A plurality of two-way solenoid valves are also connected to the confluence plate. The outlets of the plurality of two-way solenoid valves are respectively connected to the plurality of sample storage bottles through water pipes. It further includes a submersible pump. The submersible pump is connected to the fixing frame through a lifting rope. The water outlet end of the submersible pump is connected to the water inlet of the confluence plate through a water inlet pipe. A power supply is also provided in the sampling box. The power supply is used to supply power to the submersible pump and the solenoid valves.

[0008] Preferably, the power supply is a rechargeable power supply.

[0009] Preferably, a control panel is provided on the sampling box. The plurality of two-way solenoid valves are respectively connected to the control panel. The control panel is used to open or close some of the two-way solenoid valves and set the opening time of each two-way solenoid valve.

[0010] Preferably, the fixing frame includes a fixing rod and a balance rod connected to the middle of the fixing rod. The sampling box and the sample storage box are connected to the fixing frame through connecting rods.

[0011] Preferably, a filter screen cover is provided at the water inlet of the submersible pump.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] A portable municipal sewage time-sharing sampling device provided by the utility model can collect water samples at different time periods and store them in different sampling bottles, which helps to accurately capture the temporal and spatial changes of water quality.

[0014] Portability and wide applicability: The device is small in size, with simple mechanical devices and easy to maintain, making it suitable for use in various environments, including narrow spaces. The independent power supply and complete interaction function mean that the device is not restricted by external power supply and network, enhancing its application potential in different locations (such as urban drainage pipelines, water environments such as rivers, lakes and seas, etc.).

[0015] Sampling accuracy and reliability: There is no water stored in the pipeline of the device and it has a pipeline flushing function. The water inlet can stay stably in the preset water layer, thereby ensuring the accuracy of the collected water samples and the accuracy of water quality detection and analysis.

[0016] The device design ensures that there is no water stored in the pipeline, has a pipeline flushing function, and the water inlet can stay stably in the preset water layer, which helps to avoid sample contamination and ensure the accuracy of sampling. Description of the Drawings

[0017] Figure 1Schematic structural diagram of an embodiment of the present utility model.

[0018] Figure 2 Schematic structural diagram of a bus bar in an embodiment of the present utility model.

[0019] Figure 3 Schematic diagram of the usage state of an embodiment of the present utility model.

[0020] In the above-mentioned drawings:

[0021] 10. Fixing frame; 11. Fixing rod; 12. Balance rod; 13. Connecting rod; 20. Sampling box; 21. Bus bar; 22. Water inlet; 23. Normally open solenoid valve; 24. Two-way solenoid valve; 25. Power supply; 26. Control panel; 30. Sample storage box; 31. Sample storage bottle; 40. Submersible pump; 41. Pulling rope; 42. Water inlet pipe; 43. Filter screen; A. Inspection well. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] As a preferred embodiment of a portable municipal sewage time-sharing sampling device of the present utility model, as Figure 1 and Figure 2 shown, this embodiment provides a portable municipal sewage time-sharing sampling device, including a fixing frame 10, a sampling box 20 and a sample storage box 30 connected to the fixing frame 10. A plurality of sample storage bottles 31 are provided in the sample storage box 30. A bus bar 21 is provided in the sampling box 20. The bus bar 21 is provided with a water inlet 22 and a water outlet, and a normally open solenoid valve 23 is arranged on the water outlet. A plurality of two-way solenoid valves 24 are also connected to the bus bar 20. The outlets of the plurality of two-way solenoid valves 24 are respectively connected to the plurality of sample storage bottles 31 through water pipes; it also includes a submersible pump 40. The submersible pump 40 is connected to the fixing frame 10 through a pulling rope 41. The depth of the collected water sample can be changed through the pulling rope 41. The water outlet end of the submersible pump 40 is connected to the water inlet 22 of the bus bar 21 through a water inlet pipe 42; a power supply 25 is also provided in the sampling box 20. The power supply 25 is used to supply power to the submersible pump 40 and the two-way solenoid valve 24.

[0024] In a specific embodiment of the above-described embodiment, six sample storage bottles and six two-way solenoid valves are used. These six two-way solenoid valves are normally closed two-way solenoid valves. After the water sample is collected, it enters the manifold through the water inlet and flows through different solenoid valve passages according to the set rules. The six normally closed two-way solenoid valves respectively correspond to six water sample outlet pipelines, and the water samples are respectively transported to six sampling bottles.

[0025] It should be noted specifically that in the present utility model, an additional normally open solenoid valve is provided to provide a discharge channel corresponding to the waste water passage. This passage can not only discharge the discarded initial water sample to flush the water inlet pipeline, but also communicate with the atmosphere during non-pumping periods to ensure that there is no water stored in the water inlet pipeline.

[0026] In some embodiments, the power supply 25 is a rechargeable power supply. This embodiment uses an independent power supply, supports quick battery replacement and charging with a power bank, ensuring the continuous operation ability and flexibility of the device.

[0027] In some preferred embodiments, a control panel 26 is provided on the sampling box 20. A plurality of the two-way solenoid valves 24 are respectively connected to the control panel 26. The control panel 26 is used to open or close some of the two-way solenoid valves 24 and set the opening time of each two-way solenoid valve 24. The control panel 26 includes a liquid crystal screen, and four operation buttons, namely "OK", "UP", "DOWN", and "CANCEL", are provided on the liquid crystal screen. Optionally, the liquid crystal screen can be equipped with a power display and a function setting function.

[0028] In some preferred embodiments, the fixing frame 10 includes a fixing rod 11 and a balance rod 12 connected to the middle of the fixing rod 11. The sampling box 20 and the sample storage box 30 are connected to the fixing frame 10 through a connecting rod 13.

[0029] In some other embodiments, a filter screen cover 43 is provided at the water inlet of the submersible pump 40. The filter screen cover 43 is used to filter impurities and prevent blockage.

[0030] The present utility model uses a precise control circuit system for operation management, utilizes an efficient small submersible pump to achieve high-lift water delivery, and precisely regulates the water flow channel through a solenoid valve group to ensure that water samples can be stored independently. Users can set the operation process through an intuitive control panel to collect water samples according to different time tasks and automatically distribute them to designated sampling bottles for storage.

[0031] When starting to take samples, when the preset sampling time is reached, such as Figure 3As shown in the figure, A in the figure is an inspection well. Power on the submersible pump and close all two-way solenoid valves. First, flush the inlet pipeline. The water after flushing flows back to the inspection well through the normally open waste water outlet. After the pipeline flushing is completed, open the two-way solenoid valves of the corresponding passages, and at the same time close the normally open solenoid valve 23. The water sample enters the corresponding sampling bottle and operates according to the "sampling duration". The excess water sample will flow out through the overflow hole on the bottle cap and flush the sampling bottle to ensure no pollution. When the sampling is over, cut off the power supply of the submersible pump, open the normally open solenoid valve 23, and keep the two-way solenoid valves of the corresponding passages open for a period of time so that the inlet passage is connected to the atmosphere. All the water samples in the pipeline flow back to the bottom of the well through the submersible pump and the overflow hole on the water sample bottle cap. When there is no water left in the pipeline, cut off the power supply of all solenoid valves, and keep the two-way solenoid valves of the corresponding passages closed. This sampling task is completed.

[0032] After all the sampling tasks in one cycle are completed, the staff can retrieve 6 bottles of water samples collected at different times and replace the sampling bottles to start the next sampling cycle.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A portable municipal sewage time-sharing sampling device, characterized in that: It includes a fixed frame and a sampling box and a sample storage box connected to the fixed frame, wherein a plurality of sample storage bottles are arranged in the sample storage box, a manifold is arranged in the sampling box, the manifold is provided with a water inlet and a water outlet, a normally open solenoid valve is arranged on the water outlet, a plurality of two-way solenoid valves are also connected to the manifold, and outlets of the plurality of two-way solenoid valves are respectively connected to a plurality of sample storage bottles through water pipes; it also includes a submersible pump, which is connected to the fixed frame through a lifting rope, and the water outlet end of the submersible pump is connected to the water inlet of the manifold through a water inlet pipe; a power supply is also arranged in the sampling box, and the power supply is used to power the submersible pump and the two-way solenoid valve.

2. A portable municipal sewage time-sharing sampling device according to claim 1, characterized in that: The power source is a charging power source.

3. A portable municipal sewage time-sharing sampling device according to claim 1, characterized in that: The sampling box is provided with a control panel, and the plurality of two-way solenoid valves are respectively connected to the control panel. The control panel is used to open or close some of the two-way solenoid valves and set the opening time of each two-way solenoid valve.

4. A portable municipal sewage time-sharing sampling device according to claim 1, characterized in that: The fixing frame comprises a fixing rod and a balancing rod connected to the middle part of the fixing rod, and the sampling box and the sample storage box are connected to the fixing frame through a connecting rod.

5. A portable municipal sewage time-sharing sampling device according to claim 1, characterized in that: A filter screen cover is provided at the water inlet of the submersible pump.

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