Sedimentation pretreatment device with self-cleaning rain filter function

Abstract

The utility model discloses a sedimentation pretreatment device with a self-cleaning rain filter function, which belongs to the technical field of water quality monitoring systems, and includes a cabinet body, wherein a sand settling component, a water purification component and a sampling component are installed inside the cabinet body; the water inlet end of the sand settling component is connected to a water distribution pipeline, and the water distribution pipeline is connected to external source water; the water purification component water inlet end is connected to the sand settling component, the water outlet end of the water purification component is connected to a cleaning component, the cleaning component is connected to the sand settling component, and the water discharge end of the water purification component is connected to a drainage pipeline. The utility model realizes the functions of automatic sampling, natural sedimentation, automatic sample delivery and analysis, automatic water purification, automatic sample discharge and automatic cleaning of source water, so that while pre-treating the water body before the test of the water quality online monitoring analyzer, part of the water body is converted into clean water for system cleaning; at the same time, when the turbidity of the water body is high, it can realize the pre-treatment of a large water tank with high turbidity by switching, thereby reducing the impact on the online instrument analysis.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality monitoring systems, in particular to a sedimentation pretreatment device with a self-cleaning rain filter function. Background Art

[0002] At present, the pretreatment sedimentation water tank in the online water quality monitoring system used to monitor the quality of cross-basin water bodies is relatively small. For water bodies with high sediment content, the sedimentation effect of water bodies with the same turbidity is worse than that of large sedimentation water tanks per unit time.

[0003] At the same time, online water quality monitoring systems are mostly built in suburban areas or mountainous areas far away from urban areas. Due to geographical factors and the distance from urban areas, it is generally difficult for urban tap water to reach the station building. At the same time, the site is located in a remote area and large drilling equipment cannot reach it. The high cost of drilling wells also restricts the inability to build wells and use groundwater for cleaning. The lack of cleaning in the system has a great impact on the accuracy of the monitoring data.

[0004] Therefore, we need a pretreatment device that can increase the sedimentation volume to reduce the impact of turbidity on automatic monitoring data, and at the same time use local materials to physically treat the surface water to be tested. At the same time, when the turbidity of the river is high and cannot be filtered during the flood season, a pretreatment device that collects rainwater and converts it into water that can be used for system cleaning can be used. To this end, we proposed a sedimentation pretreatment device with a self-cleaning rain filter function to solve the above problems. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a sedimentation pretreatment device with a self-cleaning rain filter function to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sedimentation pretreatment device with a self-cleaning rain filter function comprises a cabinet body, in which a sand settling component, a water purification component and a sampling component are installed;

[0007] The water inlet end of the sand settling component is connected to a water distribution pipeline, the water distribution pipeline is connected to external source water, the water outlet end of the sand settling component is connected to a water purification component, and the drainage end of the sand settling component is connected to a drainage pipeline;

[0008] The water inlet end of the water purification component is connected to the sand settling component, the water outlet end of the water purification component is connected to the cleaning component, the cleaning component is connected to the sand settling component, and the drainage end of the water purification component is connected to the drainage pipeline;

[0009] The sampling component includes an M4 sampling water pump, the water pumping end of which is connected to the top of the sand settling component. The M4 sampling water pump takes the supernatant after sedimentation for analysis by the water quality online monitoring system. The two ports of the M4 sampling water pump are respectively connected to the first port and the three-way port of the V4 three-way valve. The second port of the V4 three-way valve is connected in series with a manual valve and a V6 single-way valve in sequence and then connected to the cleaning component.

[0010] In a preferred embodiment, the sand settling component includes a sand settling tank and a pre-filter, the water inlet end of the sand settling tank is connected to the pre-filter, and the pre-filter is connected to external source water through a water distribution pipeline.

[0011] In a preferred embodiment, the water inlet end of the pre-filter is connected to the V1 three-way valve, and the other two ways of the V1 three-way valve are respectively connected to the water pump and the drainage pipeline; the water outlet end of the pre-filter is connected to the V2 three-way valve, and the other two ways of the V2 three-way valve are respectively connected to the sand settling tank and the water purification component.

[0012] In a preferred embodiment, a hand valve and a V8 one-way valve are installed in parallel between the drainage end of the grit chamber and the drainage pipeline.

[0013] In a preferred embodiment, the water purification component includes a water purification tank and a membrane filter, the water inlet end of the water purification tank is connected to the membrane filter, the water inlet end of the membrane filter is connected to the sand settling tank, and the drainage end of the water purification tank is connected to the drainage pipeline.

[0014] In a preferred embodiment, the water inlet end of the membrane filter is connected in series with a hand valve, a V10 one-way valve, an M1 booster pump and a V2 three-way valve, the water outlet end of the membrane filter is connected to a clean water tank, and the drainage end of the membrane filter is connected to a drainage pipeline through a hand valve.

[0015] In a preferred embodiment, a rainwater collector is installed at the water inlet end of the water purification component, and a VX three-way valve is installed between the rainwater collector and the water inlet component. The three-way port of the VX three-way valve is connected to the rainwater collector, the two-way port of the three-way valve is connected to the water purification tank, and one port of the three-way valve is connected to two manual valves through a pipeline diversion, one of which is connected to the water outlet end of the filter, and the other manual valve is connected in parallel with the V10 single-way valve.

[0016] In a preferred embodiment, a hand valve and a V9 one-way valve are installed in parallel between the drainage end of the water purification tank and the drainage pipeline.

[0017] In a preferred embodiment, the cleaning component includes an M2 cleaning pump and a V3 three-way valve. The water pumping end of the M2 cleaning pump is connected to the clean water tank through a pipeline with a hand valve. The water outlet of the M2 cleaning pump is connected to the hand valve and the V7 single-way valve in sequence to the second port of the V3 three-way valve. One port of the V3 three-way valve is connected to the sand settling tank through a pipeline. The three-way port of the V3 three-way valve is connected to the check valve and the hand valve in sequence and then connected to the air compression pump.

[0018] The output end of the air compression pump is connected in series with a V5 one-way valve, a check valve, and a hand valve in sequence, and then connected to the three-way port of the V2 three-way valve.

[0019] In a preferred embodiment, the water outlet end of the water purification component is connected to the algae removal component, and the algae removal component includes an M3 mixer, an M5 dosing pump and a dosing tank. The M3 mixer is located at the top of the water purification pool, and the dosing tank adds sterilization and disinfection agents into the water purification pool through the M5 dosing pump.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. This device can realize the functions of automatic source water sampling, natural sedimentation, automatic sample analysis, automatic water purification, automatic sample discharge, and automatic cleaning. It can realize the pretreatment of water before the test of water quality online monitoring analyzer, and convert part of the water into clean water for system cleaning. At the same time, when the turbidity of the water is high, it can realize the pretreatment of high turbidity large water tank by switching, reducing the impact on online instrument analysis.

[0022] 2. Through the two methods of sedimentation pretreatment and precipitation conversion of natural water bodies, it can provide uninterrupted clean water supply for mountain water bodies and river water bodies that are greatly affected by the flood season. The two methods complement each other. In the non-rainy season, when the river water is clear, membrane filtration devices are used for treatment; in the rainy season, when the river water is turbid, the sedimentation area can be increased to improve the sedimentation efficiency.

[0023] 3. After collecting rainwater and storing it, disinfect and sterilize it regularly to remove most of the microorganisms in the water, so as to use local materials for cleaning the online monitoring system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a flow chart of the sedimentation pretreatment device with self-cleaning rain filter function proposed by the utility model.

[0025] Figure 2 This is a schematic diagram of the overall structure of the sedimentation pretreatment device with self-cleaning rain filter function proposed by the utility model.

[0026] Figure 3This is a structural schematic diagram of the sedimentation pretreatment device with self-cleaning rain filter function proposed by the utility model from the first perspective after the cabinet body is removed.

[0027] Figure 4 This is a structural schematic diagram of the sedimentation pretreatment device with self-cleaning rain filter function proposed by the utility model from a second viewing angle after the cabinet body is removed.

[0028] Figure 5 This is a schematic structural diagram of the sedimentation pretreatment device with self-cleaning rain filter function proposed by the utility model from a third perspective after the cabinet body is removed.

[0029] Figure 6 This is a schematic diagram of the structure of the sedimentation pretreatment device with self-cleaning rain filter function proposed by the utility model in a top view.

[0030] In the figure: 1. V1 three-way valve; 2. V2 three-way valve; 3. V3 three-way valve; 4. V4 three-way valve; 5. V5 single-way valve; 6. V6 single-way valve; 7. V7 single-way valve; 8. V8 single-way valve; 9. V9 single-way valve; 10. V10 single-way valve; 11. VX three-way valve; 12. Cabinet; 13. Electric control box; 14. Water purification tank; 15. Grit chamber; 16. Pre-filter; 17. Membrane filter; 18. M1 booster pump; 19. M2 cleaning pump; 20. M3 mixer; 21. M4 sample water pump; 22. M5 dosing pump. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0032] Example 1

[0033] As attached Figure 1-6 As shown, this embodiment provides a sedimentation pretreatment device with a self-cleaning rain filter function, which is integrally mounted on a cabinet 12. In this embodiment, signal reception, transmission, switching, etc. are all implemented by an electric control box 13. This embodiment provides a process of using the device in a natural sedimentation state, that is, first precipitating the surface water body, then filtering through an ultrafiltration membrane, removing impurities and other sediments in the surface water body, and storing the treated water body in a clean water tank 14. The specific working process is as follows:

[0034] The first step is the sampling and sedimentation stage; the source water enters the pre-filter 16 through the water distribution pipeline system. The number of pre-filters 16 is set to two. The two pre-filters 16 are respectively equipped with a 200-mesh filter and a 300-mesh filter to perform primary filtration on large particles in the water body. The water sample then enters the grit chamber 15 for sedimentation. After natural sedimentation, the supernatant after sedimentation is taken for analysis by the water quality online monitoring system;

[0035] Specifically, V1 three-way valve 1 is opened (switching 1-2 way), V2 three-way valve 2 is opened (switching 2-3 way), after receiving the feedback signals of V1 three-way valve 1 and V2 three-way valve 2 being opened, the outdoor water intake pump is started, and it stops running after receiving the full water feedback signal. At the same time when the outdoor water intake pump stops, V1 three-way valve 1 is closed (switching 2-3 way), V2 three-way valve 2 is closed (switching 1-2 way), after receiving the feedback signals of V1 three-way valve 1 and V2 three-way valve 2 being closed, the sedimentation timer starts for 30 minutes, the sand settling tank 15 is stratified, and the upper clear liquid is used for analysis by the water quality online monitoring system.

[0036] The second step is the membrane filtration stage; the remaining water sample in the grit chamber 15 first passes through the membrane filter 17, the membrane filter 17 selects an ultrafiltration membrane filter, and then enters the water purification tank 14, where the surface water to be tested is physically treated in preparation for the subsequent cleaning of the device itself;

[0037] Specifically, the V10 one-way valve 10 is opened, and the VX three-way valve 11 is opened (switching 1-2 way), until it is closed after receiving the full water feedback signal. At this time, the remaining water sample is first filtered in the membrane filter 17 to obtain a relatively pure water body, and stored in the clean water tank 14 for self-cleaning of the device.

[0038] The third step is the self-cleaning stage. After sampling, the sand settling tank 15 is emptied, and the clean water in the clean water tank 14 is extracted by a cleaning pump for water-air mixed high-pressure cleaning to clean and remove the dirt on the inner wall and bottom of the sand settling tank 15. The sediment water in the tank is then emptied and put on standby to ensure that the water sample in the next cycle is representative to improve the accuracy of the monitoring data.

[0039] Specifically: V8 one-way valve 8 is closed after opening for 220 seconds; V3 one-way valve is opened (switched from 1 to 2-way), V7 one-way valve 7 is closed after opening for 120 seconds; after receiving the feedback signal of V7 one-way valve 7 being closed, V3 three-way valve 3 is closed (switched from 2 to 3-way), V2 three-way valve 2 is opened (switched from 2 to 3-way), after receiving the feedback signal of V3 three-way valve 3 and V2 three-way valve 2, V7 one-way valve 7 is closed after opening for 10 seconds; after receiving the feedback signal of V7 one-way valve 7 being closed, V5 one-way valve 5 and V8 one-way valve 8 are opened, after receiving the feedback signal of V5 one-way valve 5 and V8 one-way valve 8 being opened, After V5 single-way valve 5 opens for 5 seconds, V2 three-way valve 2 closes (switches 1-2 ways), 30 seconds after receiving the closed feedback of V2 three-way valve 2, V5 single-way valve 5 closes, after receiving the closed feedback of V5 single-way valve 5, V6 single-way valve 6 opens; after receiving the open feedback of V6 single-way valve 6, V7 single-way valve 7 opens for 5 seconds, V4 three-way valve 4 opens (switches 1-2 ways) for 5 seconds, after receiving the open feedback of V4 three-way valve 4, V5 single-way valve 5 closes after opening for 10 seconds, after receiving the closed feedback signal of V5 single-way valve 5, V4 three-way valve 4, V8 single-way valve 8, and V6 single-way valve 6 close. The process ends, and each valve switches back to the initial state.

[0040] Step 4: Algae removal stage; the water purification pool 14 regularly starts the algae removal process to remove microorganisms in the pool, ensure the quality of the cleaning water, and realize the self-purification and self-cleaning automation process of the entire sedimentation pretreatment device;

[0041] Specifically, the M5 dosing pump 22 is started and then stopped after 60 seconds; the M3 mixer 20 is started and then stopped after 120 seconds; after stopping for 600 seconds, the V9 one-way valve 9 is opened; the V9 one-way valve is opened and then closed after 220 seconds, and the process ends.

[0042] In addition, it is worth noting that:

[0043] 1. The processing capacity of the selected membrane filter should not be less than 3000L / h. Small processing capacity will affect the cycle operation of the water quality online monitoring system and increase the maintenance frequency of the system.

[0044] 2. The diameter of the pipes entering and exiting the membrane filter should not be less than 1 inch. If the diameter is too small, it will affect the flow rate of the source water and the processing capacity.

[0045] 3. The filter membrane in the membrane filter needs to be cleaned and regenerated in time according to the amount of water output to ensure the effect of pure water output.

[0046] Example 2

[0047] As attached Figure 1-6 As shown, this embodiment provides a precipitation pretreatment device with a self-cleaning rain filter function, which adopts a precipitation collection and conversion process, that is, rainwater collection. This embodiment can supplement the embodiment 1, and can play an uninterrupted role in supplying clean water for mountain water bodies and river water bodies that are greatly affected by the flood season;

[0048] Specifically, the filtering principle is used to remove large particles and suspended matter, and then the water is stored in the clean water tank 14. After the water is stored by rainwater collection, it is regularly disinfected and sterilized to remove most of the microorganisms in the water. It is used for cleaning the online monitoring system, which completely solves the problem of self-purification of the online water quality monitoring system in remote areas without cleaning water.

[0049] Rainwater collection stage: VX three-way valve 11 is opened (switched 1-3 ways), after receiving the signal from VX three-way valve 11, V10 single-way valve 10 is closed, and water is collected through the rainwater collector until a full water feedback signal is received, VX three-way valve 11 is opened (switched 1-2 ways), and the water is filtered through the filter, and the filtered water enters the clean water tank 14 and is stored until the full water feedback signal is received and the operation is stopped, the process ends, and each valve switches back to the initial state.

[0050] The various filters, various pump bodies, etc. involved in this embodiment can adopt conventional equipment in the field, and their supporting valves and pipelines can also be provided by the manufacturer. In addition, the circuits, electronic components and modules involved in the utility model are all existing technologies, which can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to the internal structure and methods.

[0051] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0052] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0053] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A sedimentation pretreatment device with a self-cleaning rain filter function, comprising a cabinet (12), characterized in that: The cabinet (12) is internally installed with a sand settling component, a water purification component and a sampling component; The water inlet end of the sand settling component is connected to a water distribution pipeline, the water distribution pipeline is connected to external source water, the water outlet end of the sand settling component is connected to a water purification component, and the drainage end of the sand settling component is connected to a drainage pipeline; The water inlet end of the water purification component is connected to the sand settling component, the water outlet end of the water purification component is connected to the cleaning component, the cleaning component is connected to the sand settling component, and the drainage end of the water purification component is connected to the drainage pipeline; The sampling component comprises an M4 sample water pump (21), the pumping end of the M4 sample water pump (21) is connected to the top of the sand settling component, the M4 sample water pump (21) takes the supernatant after sedimentation for analysis by the water quality online monitoring system, the two ports of the M4 sample water pump (21) are respectively connected to the first port and the third port of the V4 three-way valve (4), the second port of the V4 three-way valve (4) is connected in series with the hand valve and the V6 single-way valve (6) in sequence, and then connected to the cleaning component.

2. The sedimentation pretreatment device with self-cleaning rain filter function according to claim 1 is characterized in that: The sand settling component comprises a sand settling tank and a pre-filter (16); the water inlet end of the sand settling tank (15) is connected to the pre-filter (16); and the pre-filter (16) is connected to external source water through a water distribution pipeline.

3. The sedimentation pretreatment device with self-cleaning rain filter function according to claim 2 is characterized in that: The water inlet end of the pre-filter (16) is connected to the V1 three-way valve (1), and the other two ways of the V1 three-way valve (1) are respectively connected to the water pump and the drainage pipeline; the water outlet end of the pre-filter (16) is connected to the V2 three-way valve (2), and the other two ways of the V2 three-way valve (2) are respectively connected to the sand settling tank (15) and the water purification component.

4. The sedimentation pretreatment device with self-cleaning rain filter function according to claim 2 is characterized in that: A hand valve and a V8 one-way valve (8) are installed in parallel between the drainage end of the grit chamber and the drainage pipeline.

5. The sedimentation pretreatment device with self-cleaning rain filter function according to claim 3 is characterized in that: The water purification component comprises a water purification tank (14) and a membrane filter (17); the water inlet end of the water purification tank (14) is connected to the membrane filter (17); the water inlet end of the membrane filter (17) is connected to the sand settling tank (15); and the drainage end of the water purification tank (14) is connected to a drainage pipeline.

6. The sedimentation pretreatment device with self-cleaning rain filter function according to claim 5 is characterized in that: The water inlet end of the membrane filter (17) is connected in series with a hand valve, a V10 one-way valve (10), an M1 booster pump (18) and a V2 three-way valve (2) in sequence; the water outlet end of the membrane filter (17) is connected to a clean water tank (14); and the drainage end of the membrane filter (17) is connected to a drainage pipeline via a hand valve.

7. The sedimentation pretreatment device with self-cleaning rain filter function according to claim 6 is characterized in that: A rainwater collector is installed at the water inlet end of the water purification component, and a VX three-way valve (11) is installed between the rainwater collector and the water purification component. The three-way port of the VX three-way valve (11) is connected to the rainwater collector, and the two-way port of the three-way valve is connected to the water purification tank (14). One port of the three-way valve is connected to two manual valves through a pipeline diversion, one of which is connected to the water outlet end of the filter, and the other is connected in parallel with the V10 single-way valve (10).

8. The sedimentation pretreatment device with self-cleaning rain filter function according to claim 5 is characterized in that: A hand valve and a V9 one-way valve (9) are installed in parallel between the drainage end of the clean water tank (14) and the drainage pipeline.

9. The sedimentation pretreatment device with self-cleaning rain filter function according to claim 5 is characterized in that: The cleaning component comprises an M2 cleaning pump (19) and a V3 three-way valve (3); the water pumping end of the M2 cleaning pump (19) is connected to the clean water tank (14) through a pipeline with a hand valve; the water outlet end of the M2 cleaning pump (19) is connected to the hand valve and the V7 single-way valve (7) in sequence and connected to the second port of the V3 three-way valve (3); one port of the V3 three-way valve (3) is connected to the sand settling tank through a pipeline; the three-way port of the V3 three-way valve (3) is connected to the check valve and the hand valve in sequence and then connected to the air compression pump; The output end of the air compression pump is connected in series with a V5 one-way valve (5), a check valve and a hand valve in sequence, and then connected to the three-way port of a V2 three-way valve (2).

10. The sedimentation pretreatment device with self-cleaning rain filter function according to claim 1 is characterized in that: The water outlet of the water purification component is connected to the algae removal component, and the algae removal component includes an M3 mixer (20), an M5 dosing pump (22) and a dosing box. The M3 mixer (20) is located at the top of the water purification tank (14), and the dosing box adds a sterilizing and disinfecting agent into the water purification tank (14) through the M5 dosing pump (22).

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