CN207066818U - Can self-cleaning nutrients in sea water pre-filtering preparation system - Google Patents

Abstract

The utility model is related to can self-cleaning nutrients in sea water pre-filtering preparation system, including the multi-stage filter core for being filtered successively to seawater, the multi-stage filter core is connected to form filter pipeline, every grade of filter core is respectively connected with the detergent line for cleaning the filter core, every grade of filter core is also each provided with the discharge pipe line for being individually used for draining, the detergent line and discharge pipe line are provided with magnetic valve, and the detergent line of every grade of filter core can connect to form the pipeline being connected with the discharge pipe line by the filter core.Monitoring accuracy is improved, extends filter core service life, simplifies the maintenance mode of equipment, reduces the maintenance cost of equipment.

Description

Self-cleaning seawater nutrient salt pre-filtration preparation system

Technical field:

The utility model relates to a self-cleaning seawater nutrient salt pre-filtration preparation system, a preparation method and a preparation process thereof.

Background technique:

The traditional seawater nutrient detection is to pass seawater through a 0.45μm filter membrane to remove particulate matter, and then add reagents to react and develop color. In order to obtain the change of nutrients with high time resolution in the ocean, wet chemical reaction instruments are often used for in-situ online detection in the ocean. The principle is that when the peristaltic pump or piston inside the in-situ measuring instrument moves, seawater can be passively sucked into the instrument. Thus, the reagent color reaction is automatically carried out. Suspended solids such as high-concentration sediment and biofouling in seawater are two key problems faced by the online monitoring of nutrients in the ocean, especially in the coastal waters, which greatly affect the data precision, accuracy and service life of the instrument. Therefore, online pretreatment of seawater samples It is one of the problems that must be overcome in the on-line monitoring of offshore nutrients.

Utility model content:

The purpose of this utility model is to provide a self-cleaning seawater nutrient salt pre-filtration preparation system, which can self-clean seawater nutrient salt pre-filtration preparation system, including a multi-stage filter element for sequentially filtering seawater. connected to form a filter pipeline, and it is characterized in that each stage of the filter element is connected with a cleaning pipeline for cleaning the filter element, and each stage of the filter element is also provided with a separate drainage pipeline for drainage, and the cleaning Both the pipeline and the drainage pipeline are provided with solenoid valves, and the cleaning pipeline of each stage of the filter element and the drainage pipeline can be connected through the filter element to form a connected pipeline.

As a further improvement of the embodiment of the present utility model, the multi-stage filter element is a three-stage filter element, including a first-stage filter element, a second-stage filter element and a third-stage filter element, and a filter membrane with a pore size of 0.45 μm is provided at the outlet end of the filter pipeline.

As a further improvement of the embodiment of the present utility model, a support partition is provided between the secondary filter element and the tertiary filter element, and the primary filter element, the secondary filter element and the tertiary filter element are sequentially packaged in a high-density PVC cylinder , a support partition is provided between the secondary filter element and the tertiary filter element, and the primary filter element, the secondary filter element and the tertiary filter element are sequentially packaged in a high-density PVC cylinder.

As a further improvement of the embodiment of the present utility model, each of the multi-stage filter elements is separately provided with a pipeline communicating with the air.

As a further improvement of the embodiment of the present utility model, the pipelines communicating with the air are also provided with electromagnetic valves, and the pipelines communicating with the air are connected to the drainage pipeline through the filter element to empty the pipeline. During the emptying process, the solenoid valve provided on the air-connected pipeline and the solenoid valve provided on the drainage pipeline are set to be opened successively at intervals of a certain time.

As a further improvement of the embodiment of the present utility model, the cleaning pipeline and the drainage pipeline of each filter element are equipped with electromagnetic valves, and the electromagnetic valves are set to be opened in sequence according to the different filter elements. The solenoid valves set in the drain line are set to open at the same time, which is used to flush each stage of the filter element individually in turn.

As a further improvement of the embodiment of the present utility model, the cleaning pipelines of each stage of the filter element are connected to the container containing the cleaning liquid, and the pipelines for drainage are connected to the container containing the waste liquid. The container for holding the cleaning solution is connected with the electromagnetic valve through a water pump.

As a further improvement of the embodiment of the present utility model, the filter pipeline is connected to a water pump through a solenoid valve, and the water pump is connected to the seawater to be detected.

As a further improvement of the embodiment of the present utility model, the cleaning pipeline is connected with a safety valve, and the filtering pipeline is also connected with a safety valve.

As a further improvement of the embodiment of the present utility model, the cleaning pipelines of the filter elements of each stage and the drainage pipeline are connected in parallel with the filter pipeline.

Compared with the prior art, the utility model has the beneficial effects that: the utility model can prevent the growth of attached organisms, and the three-stage filter element can limitly prevent large particles of sand from entering the online measuring instrument, and improve the filtration capacity; wood fiber and resin materials are non-nutritive The effect of salt pollution or adsorption; the structure and materials of the device used can withstand the pressure of 200m water depth, which can meet the nutrient salt measurement in the offshore or deep sea; the filtering effect is obvious, and it can be used in situ and online for a long time. The aforementioned seawater nutrient on-line pre-filtration device for preventing biofouling still has certain defects: in seawater with high turbidity, the third-stage filter element is easily blocked, and there is no backwashing process to clean the filter element. , all need to disassemble the entire filter element device, which is inconvenient, and the maximum flow through the filter element is low, which is far from meeting the requirements of online monitoring of water quality. The utility model solves this problem through multi-stage cleaning separately and sequentially , Improve the monitoring accuracy, prolong the service life of the filter element, simplify the maintenance method of the equipment, and reduce the maintenance cost of the equipment.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description The drawings show some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Fig. 1 is a structural diagram of a self-cleaning seawater nutrient salt pre-filtration preparation system provided by Embodiment 1 of the present invention;

In the picture:

1. Primary filter element, 2. Secondary filter element, 3. Third stage filter element, 4. Safety valve, 5. Pump 1, 6, Pump 2, 7. Raw water tank, 8. Clean water tank, 9. Waste water tank, 10, Solenoid valve F1, 11, Solenoid valve F2, 12, Solenoid valve F3, 13, Solenoid valve F4, 14, Solenoid valve F5, 15, Solenoid valve F6, 16, Solenoid valve F7, 17, Solenoid valve F8, 18, Solenoid valve F9, 19, electromagnetic valve F10, 20, electromagnetic valve 11.

Detailed ways

The utility model is further described below in conjunction with the examples, but the utility model is not limited to the following examples.

In the self-cleaning seawater nutrient salt pre-filtration preparation system involved in the utility model, the pretreatment devices for nutrient salt detection are mostly cellulose acetate filter membranes or glass fiber filter membranes used in laboratories, which cannot be used for online monitoring. The commercial online filtration device has a simple structure, only single-stage filtration, no backwash function, and is not suitable for long-term nutrient detection in high-turbidity seawater.

As shown in Figure 1, the system includes: pump 1: pump raw water to the water sample preparation system; pump 2: pump clean water to clean the water sample preparation system; solenoid valve: control the on-off of the water circuit and balance the pressure; Grade filter element: filter raw water; safety valve: maintain system pressure; raw water tank: store raw water to be filtered; fresh water tank: store clean water used when cleaning the system; waste water tank: store waste water after cleaning the system and clean water left in the system.

Preferably, as shown in Figure 1, the multi-stage filter element adopts a three-stage filter element, wherein the last stage filter element is a 0.45um aperture filter element. filter element and three-stage filter element, the first-stage filter element is a polyurethane screen with a pore size of 200 μm, the second-stage filter element is a resin filter core layer with a pore size of 60 μm, and the third-stage filter element is a wood fiber filter core layer with a pore size of 0.45-1 μm. The first-stage filter element is set in the water inlet port of the high-density PVC cylinder, and a high-density PVC support partition is interposed between the second-stage filter element and the third-stage filter element, and the third-stage filter element is packaged In the outlet end of the high-density PVC cylinder. The filter element involved in the utility model can be selected as a secondary filter element, a four-stage filter element or a filter element with more stages. Level filtering, has been able to meet the basic requirements.

As shown in Figure 1, the working principle, working process and water sample preparation process of this system, taking the system of three-stage filter elements as an example, start the pump 1, open the solenoid valves F1 and F2, and close the other solenoid valves. At this time, the pump 1 The raw water will be pumped into the water sample preparation system, and the raw water will be discharged from the F2 outlet after being filtered by the multi-stage filter element.

During the water sample preparation process, when the pressure at the outlet of pump 1 is greater than the safety pressure of the system, the safety valve will open, and the excess pressure will be released by drainage to protect the water sample preparation system. The cleaning process is carried out after the water sample preparation process is completed. The process and steps are: turn off pump 1, solenoid valves F1 and F2, turn on pump 2 to draw clean water, and turn on solenoid valves F5 and F8 respectively to rinse the third-stage filter element; After the flushing time of the third-stage filter element is completed, close the solenoid valves F5 and F8, open F4 and F7 to flush the second-stage filter element; when the flushing time of the second-stage filter element is completed, close the solenoid valves F4 and F7, and open F3 and F6 to flush the first-stage filter element ; When the flushing time of the second-stage filter element is completed, close the solenoid valves F3, F6 and water pump 2.

During the cleaning process, when the pressure at the outlet of pump 2 is greater than the safety pressure of the system, the safety valve will open, and the excess pressure will be released by drainage to protect the water sample preparation system, and the safety valve will discharge the clean water back to the clean water pool , save water.

The emptying process is: open the solenoid valves F6, F7, F8 to discharge the pressure in the filter element;

After a certain period of time after the previous step is completed, continue to open the solenoid valves F9, F10, and F11 to equalize the pressure in the filter element and empty the residual water in the filter element; , close all solenoid valves. After the emptying is completed, a small amount of water remains in the system. When the water sample preparation is started next time, the system can be used to prepare water samples only after a short time of moistening the tube.

It should be understood that although this description is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for the feasible implementation modes of the present utility model, and they are not used to limit the protection scope of the present utility model. Embodiments or modifications should be included within the protection scope of the present utility model.

Claims (10)

1. can self-cleaning nutrients in sea water pre-filtering preparation system, including the multi-stage filter core for being filtered successively to seawater, The multi-stage filter core is connected to form filter pipeline, it is characterised in that every grade of filter core is respectively connected with for cleaning filter core Detergent line, every grade of filter core are also each provided with the discharge pipe line for being individually used for draining, the detergent line and drainpipe Road is provided with magnetic valve, and the detergent line of every grade of filter core can connect to form phase with the discharge pipe line by the filter core The pipeline of connection.

2. according to claim 1 can self-cleaning nutrients in sea water pre-filtering preparation system, it is characterised in that the multistage Filter core is three-level filter core, including one-level filter core, two level filter core and three-level filter core, the water side of the filter pipeline are additionally provided with 0.45 μm of aperture filter membrane.

3. according to claim 2 can self-cleaning nutrients in sea water pre-filtering preparation system, it is characterised in that described one Level filter core is 200 μm of aperture polyurethane screens, and described two level filter core is 60 μm of aperture resin filter element layers, described three-level filter core For the wood fibre filter core layer in 0.45~1 μm of aperture, supporting clapboard is provided between described two level filter core and three-level filter core, it is described One-level filter core, two level filter core and three-level filter core be encapsulated in successively in high density PVC cylinders.

4. according to claim 1 can self-cleaning nutrients in sea water pre-filtering preparation system, it is characterised in that the multistage Filter core is also each separately provided with the pipeline with air communication.

5. according to claim 4 can self-cleaning nutrients in sea water pre-filtering preparation system, it is characterised in that it is described with it is empty The pipeline of gas connection is also both provided with magnetic valve, described to be connected row by filter core with the pipeline of air communication with the discharge pipe line Blank pipe road, the magnetic valve set with the magnetic valve that the pipeline of air communication is set with the discharge pipe line is in evacuation procedure In, it is arranged to separated in time and successively opens successively.

6. according to claim 1 can self-cleaning nutrients in sea water pre-filtering preparation system, it is characterised in that described every grade The magnetic valve that the detergent line of filter core and discharge pipe line are respectively provided with, the difference that the magnetic valve is arranged to filter core are beaten successively Open, the magnetic valve of the detergent line of same filter core and discharge pipe line setting is arranged to open simultaneously, for individually rinsing successively Every grade of filter core.

7. according to claim 1 can self-cleaning nutrients in sea water pre-filtering preparation system, it is characterised in that described every grade The detergent line of filter core is connected with holding the container of cleaning fluid, container of the pipeline for draining with holding waste liquid It is connected, the container for holding cleaning fluid is connected with the magnetic valve by water pump.

8. according to claim 1 can self-cleaning nutrients in sea water pre-filtering preparation system, it is characterised in that the filtering Pipeline is connected by magnetic valve with water pump, and the water pump is connected with seawater to be detected.

9. according to claim 1 can self-cleaning nutrients in sea water pre-filtering preparation system, it is characterised in that the cleaning Pipeline is connected with safety valve, and the filter pipeline is also connected with safety valve.

10. according to claim 1 can self-cleaning nutrients in sea water pre-filtering preparation system, it is characterised in that described each The detergent line of level filter core and the discharge pipe line are connected in parallel with filter pipeline.