Backflushing type self-cleaning water quality sampling device

Abstract

The utility model discloses a back-flushing type self-cleaning water quality sampling device, relates to the technical field of water quality sampling devices, and solves the problems of sampling flow reduction, even sampling channel blockage and high manual cleaning cost caused by pollutant attachment in the prior art. Comprising a sampling main body, the bottom of the sampling main body is connected with a filtering assembly, a sampling cavity is formed in the sampling main body, and the sampling cavity is communicated with the filtering assembly through a connecting piece; the filter assembly comprises a shell and a filter screen, the interior of the shell is divided into a filter cavity and a cleaning cavity by the filter screen, the filter cavity is communicated with the communicating pipeline of the connecting piece, and a water inlet pipeline is arranged on one side of the shell and communicated with the cleaning cavity; the side wall of the connecting piece is connected with a backwashing pipeline, and the backwashing pipeline is communicated with the communicating pipeline; and flow sensors are arranged on the water inlet pipeline and the communicating pipeline. The self-cleaning filter screen has the beneficial effects that the filter screen can be subjected to back-flushing cleaning through the back-flushing pipeline, and self-cleaning is realized.

Description

Technical Field

[0001] This utility model relates to the technical field of water quality sampling devices, specifically a backwashing self-cleaning water quality sampling device. Background Technology

[0002] In the field of water quality monitoring, accurately obtaining representative water samples is fundamental to conducting water quality analysis and assessment. An automatic water sampler is a suction-type water sample dispensing device capable of various sampling methods and bottling methods to meet different water sample requirements. It is an ideal sampling tool for scientific monitoring of rivers, lakes, and industrial wastewater.

[0003] Current water quality samplers generally have a structure similar to that described in patent application number "CN201820374747.7", including a water collection bucket, a handle, and a lifting ring. The handle is fixedly installed on the upper end of the outer wall of the water collection bucket, and the lifting ring is sleeved on the handle. A water passage hole is provided at the bottom of the water collection bucket, and a filter screen is installed inside the water passage hole. A movable base plate matching the size of the water passage hole is located inside the water collection bucket, and a limiting block is provided above the base plate. A movable bucket lid is provided on the top of the water collection bucket.

[0004] However, during long-term operation, pollutants can adhere to the filter screen of this water quality sampling device, leading to a decrease in sampling flow and even blockage of the sampling channel. Manual cleaning is labor-intensive and incomplete, resulting in high maintenance costs.

[0005] Therefore, this invention proposes a backwashing self-cleaning water sampling device to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this invention is to provide a backwash-type self-cleaning water quality sampling device to solve the problems in the prior art where pollutant adhesion leads to reduced sampling flow or even blockage of the sampling channel, and high manual cleaning costs.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A backwashing self-cleaning water quality sampling device includes a sampling body, a filter assembly connected to the bottom of the sampling body, a sampling chamber provided inside the sampling body, and the sampling chamber communicating with the filter assembly through a connector.

[0009] The filter assembly includes a housing and a filter screen. The filter screen is installed inside the housing and divides the interior of the housing into a filtration chamber and a cleaning chamber. The filtration chamber is connected to a connecting pipe of the connector. A water inlet pipe is provided on one side of the housing and is connected to the cleaning chamber. A backwash pipe is connected to the side wall of the connector and is connected to the connecting pipe. Flow sensors are provided on both the water inlet pipe and the connecting pipe.

[0010] Furthermore, the cleaning chamber is provided with stirring blades, which are connected to a drive motor via a stirring shaft. The drive motor is installed outside the outer casing.

[0011] Furthermore, a drain outlet is provided at the bottom of the outer casing, and a drain door is installed on the drain outlet.

[0012] Furthermore, a one-way valve is connected to the backwash pipe, and a pressure pump is also connected to the backwash pipe.

[0013] Furthermore, an exhaust pipe is provided on the top of the sampling body, the exhaust pipe is connected to the sampling chamber, and an exhaust valve is installed on the exhaust pipe.

[0014] Furthermore, the filter screen has a cylindrical structure, and the cleaning cavity is formed between the outer side wall of the filter screen and the inner side wall of the outer shell, and the interior of the filter screen is the filtration cavity.

[0015] Furthermore, the outer surfaces of both the sampling body and the filter assembly are coated with an epoxy resin anti-corrosion coating.

[0016] In summary, compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. When the sampling flow rate decreases due to the adhesion of pollutants to the filter screen, the pressurization pump can drive water flow through the backwashing pipe to backwash the filter screen, using the impact force of the water flow to remove the attached pollutants, thus achieving a self-cleaning function. This eliminates the need for frequent manual cleaning and significantly reduces labor costs.

[0018] 2. This utility model, in conjunction with the stirring blades inside the cleaning chamber, stirs the water flow under the drive of the motor, enhancing the flushing and peeling effect on the surface of the filter screen, further improving cleaning efficiency and making the cleaning more thorough. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 This is the front view of the present invention;

[0021] Figure 3This is a partial cross-sectional view of the main view of this utility model;

[0022] Figure 4 This is the right view of the present invention;

[0023] In the diagram: 1. Sampling body; 4. Connector; 5. Connecting pipe; 6. Outer shell; 7. Filter screen; 8. Filter chamber; 9. Cleaning chamber; 10. Water inlet pipe; 11. Backwash pipe; 12. Flow sensor; 13. Stirring blade; 14. Stirring shaft; 15. Drive motor; 16. Drain outlet; 17. Drain gate; 18. Check valve; 19. Booster pump; 20. Exhaust pipe; 21. Exhaust valve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In this application, the terms "upper," "inner," "outer," "middle," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] like Figure 1-4 As shown, a backwash-type self-cleaning water sampling device includes a sampling body 1, a filter assembly connected to the bottom of the sampling body 1, and a sampling chamber disposed inside the sampling body 1. The sampling chamber is connected to the filter assembly via a connector 4. The outer surfaces of both the sampling body 1 and the filter assembly are coated with an epoxy resin anti-corrosion coating. An exhaust pipe 20 is disposed at the top of the sampling body 1, the exhaust pipe 20 is connected to the sampling chamber, and an exhaust valve 21 is installed on the exhaust pipe 20.

[0027] Furthermore, the filter assembly includes a housing 6 and a filter screen 7. The filter screen 7 is installed inside the housing 6 and divides the interior of the housing 6 into a filter chamber 8 and a cleaning chamber 9. The filter screen 7 has a cylindrical structure. The cleaning chamber 9 is formed between the outer side wall of the filter screen 7 and the inner side wall of the housing 6. The interior of the filter screen 7 is the filter chamber 8.

[0028] Furthermore, the filter chamber 8 is connected to the connecting pipe 5 of the connector 4, and a water inlet pipe 10 is provided on one side of the outer shell 6, which is connected to the cleaning chamber 9; a backwash pipe 11 is connected to the side wall of the connector 4, which is connected to the connecting pipe 5; a one-way valve 18 is connected to the backwash pipe 11, and a booster pump 19 is also connected to the backwash pipe 11. Flow sensors 12 are provided on both the water inlet pipe 10 and the connecting pipe 5.

[0029] Furthermore, a stirring blade 13 is provided inside the cleaning chamber 9, and the stirring blade 13 is connected to a drive motor 15 via a stirring shaft 14. The drive motor 15 is installed outside the outer casing 6. A drain port 16 is provided at the bottom of the outer casing 6, and a drain door 17 is installed on the drain port 16.

[0030] The working process of this utility model is as follows:

[0031] First, the water to be sampled flows into the cleaning chamber 9 from the inlet pipe 10. The cleaning chamber 9 is formed by the cylindrical filter screen 7, with its outer wall and the inner wall of the outer shell 6. The inner side is the filtration chamber 8. After the water flows through the filter screen 7, it enters the filtration chamber 8 and then flows into the sampling chamber of the sampling body 1 through the connecting pipe 5, thus completing the water sampling. The exhaust pipe 20 at the top of the sampling body 1 is connected to the sampling chamber. When sampling begins, the exhaust valve 21 is opened to expel the air in the sampling chamber, ensuring that the sampling chamber is filled with water sample. Then the exhaust valve 21 is closed. The flow sensor 12 on the inlet pipe 10 and the connecting pipe 5 monitors the water flow rate in real time, providing data for subsequent determination of whether self-cleaning is required.

[0032] When self-cleaning is required, first close the valve of the inlet pipe 10 to cut off the water supply, and then start the booster pump 19 on the backwash pipe 11. The booster pump 19 works to make the water flow from the backwash pipe 11 into the connecting pipe 5. Since the backwash pipe 11 is connected to the connecting pipe 5 and a one-way valve 18 is installed on the backwash pipe 11, it can prevent the water from flowing back, thereby forming a backwash water flow from the sampling chamber to the filter chamber 8 and the cleaning chamber 9.

[0033] When backwash water flows through the filter screen 7, the inlet pipe 10 is first closed to flush away the contaminants attached to the filter screen 7, causing them to detach from the filter screen 7. Simultaneously, the stirring blades 13 inside the cleaning chamber 9 begin to rotate under the drive of the motor 15. The rotation of the stirring blades 13 further stirs and washes away the contaminants on the outside of the filter screen 7, enhancing the cleaning effect and making it easier for the contaminants to detach from the surface of the filter screen 7. The detached contaminants accumulate in the cleaning chamber 9 with the backwash water flow, and the drain valve 16 at the bottom of the outer casing 6 opens, allowing the contaminants to be discharged from the device through the drain valve 16, completing the cleaning process. After cleaning, the pressure pump 19, the relevant valves of the backwash pipe 11, and the drain valve 17 are closed, and then the inlet pipe 10 is reopened, restoring the device to normal sampling status and continuing water quality sampling. The epoxy resin anti-corrosion coating on the outer surface of the sampling body 1 and the filter components effectively protects the device, extends its service life in the water quality sampling environment, and reduces malfunctions and maintenance needs caused by corrosion.

Claims

1. A backflushing self-cleaning water quality sampling device comprising a sampling body (1), characterized in that, The bottom of the sampling body (1) is connected to a filter assembly, and a sampling cavity is provided inside the sampling body (1). The sampling cavity is connected to the filter assembly through a connector (4). The filter assembly includes a housing (6) and a filter screen (7). The filter screen (7) is installed inside the housing (6) and divides the interior of the housing (6) into a filter chamber (8) and a cleaning chamber (9). The filter chamber (8) is connected to the connecting pipe (5) of the connector (4). A water inlet pipe (10) is provided on one side of the housing (6) and is connected to the cleaning chamber (9). A backwash pipe (11) is connected to the side wall of the connector (4) and is connected to the connecting pipe (5). A flow sensor (12) is provided on both the water inlet pipe (10) and the connecting pipe (5).

2. The backflushing self-cleaning water quality sampling device according to claim 1, characterized in that, The cleaning chamber (9) is provided with stirring blades (13), which are connected to the drive motor (15) via stirring shaft (14). The drive motor (15) is installed outside the outer shell (6).

3. The backflushing self-cleaning water quality sampling device according to claim 1, characterized in that, The bottom of the outer casing (6) is provided with a drain port (16), and a drain door (17) is installed on the drain port (16).

4. The backflushing self-cleaning water quality sampling device according to claim 1, characterized in that, A one-way valve (18) is connected to the backwash pipe (11), and a pressure pump (19) is also connected to the backwash pipe (11).

5. The backflushing self-cleaning water quality sampling device according to claim 1, characterized in that, The sampling body (1) is provided with an exhaust pipe (20) at the top, the exhaust pipe (20) is connected to the sampling chamber, and an exhaust valve (21) is installed on the exhaust pipe (20).

6. The backflushing self-cleaning water quality sampling device according to claim 1, characterized in that, The filter (7) has a cylindrical structure, and the cleaning cavity (9) is formed between the outer side wall of the filter (7) and the inner side wall of the outer shell (6). The interior of the filter (7) is the filtration cavity (8).

7. The backflushing self-cleaning water quality sampling device according to claim 1, characterized in that, The outer surfaces of the sampling body (1) and the filter assembly are coated with an epoxy resin anti-corrosion coating.

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