A grid plate water flux testing system and method

Abstract

The present invention relates to a grid plate water flux test system and method. The present invention includes a water storage tank; a vertical flow grid plate test device, including a supporting horizontal plate for installing the vertical flow grid plate, a water inlet guide groove, a water confluence port connected to the water storage tank, and a water level regulating plate; an overflow groove connected to the water storage tank is formed on one side of the water level regulating plate; a lateral flow grid plate test device, including a supporting vertical plate and a water inlet groove and a water confluence port respectively located on both sides of the supporting vertical plate; an overflow port is arranged in the water confluence port, a water baffle is arranged on the side of the water confluence port, and a water outlet groove is arranged on one side of the water baffle; the water outlet groove and the overflow port are respectively connected to the water storage tank; a variable frequency lifting pump, the water inlet end is connected to the water storage tank through a water outlet pipe, and a water outlet valve is arranged on the water outlet pipe; the water outlet end of the variable frequency lifting pump is respectively connected to the water inlet guide groove and the water inlet groove through a water inlet pipe. The present invention can accurately detect the water flux of vertical flow grid plates and lateral flow grid plates with different opening apertures.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a grid plate water flux testing system and method. Background Art

[0002] As the primary link in rainwater and sewage treatment, the screen is mainly used to intercept inert impurities such as suspended matter, rubber and plastic products, hair, plant fibers, etc. in rainwater and sewage. The design and selection of the screen will directly affect the operation effect of subsequent units, the service life of the equipment and the overall process efficiency.

[0003] The water flux of (ultra) fine grids is a key parameter in grid design and selection. Currently, there are two main water inlet flow modes for (ultra) fine grids on the market: vertical flow and lateral flow. Different water inlet modes have a great influence on the water flux of (ultra) fine grids, but there is currently a lack of test methods for the water flux of vertical flow grids and lateral flow grids.

[0004] Therefore, there is an urgent need to develop a test device and test method for the water flux of vertical flow grids and lateral flow grids, which can scientifically and accurately detect the water flux of vertical flow grids and lateral flow grids with different opening apertures, thereby providing support for the design and selection of different types of (ultra) fine grids. Summary of the invention

[0005] To this end, the present invention provides a grid plate water flux testing system and method, which can accurately detect the water flux of vertical flow grid plates and lateral flow grid plates with different opening apertures.

[0006] In order to solve the above technical problems, the present invention provides a grid water flux test system, comprising:

[0007] A water storage tank is provided with a water inlet and a drain pipe, and the drain pipe is provided with a drain valve;

[0008] A vertical flow grid plate testing device comprises a supporting transverse plate for mounting the vertical flow grid plate, a water inlet guide groove located beside the supporting transverse plate, a water confluence located at the lower part of the supporting transverse plate and connected to the water storage tank, and a water level regulating plate installed on the supporting transverse plate in an adjustable height; wherein an overflow groove connected to the water storage tank is formed on one side of the water level regulating plate;

[0009] A lateral flow grid plate test device comprises a support vertical plate for mounting the lateral flow grid plate and a water inlet trough and a water collection trough respectively located on both sides of the support vertical plate; wherein an overflow port is arranged in the water collection trough, a water baffle is arranged on the side of the water collection trough, and a water outlet trough is arranged on one side of the water baffle; the water outlet trough and the overflow port are respectively connected to the water storage tank;

[0010] A variable frequency lifting pump, the water inlet end of the variable frequency lifting pump is connected to the water storage tank through a water outlet pipe, and a water outlet valve is arranged on the water outlet pipe; the water outlet end of the variable frequency lifting pump is connected to the water inlet guide groove and the water inlet groove respectively through a water inlet pipe.

[0011] In one embodiment of the present invention, the overflow trough is connected to the water storage tank through an overflow pipe I, and an electromagnetic flowmeter I is provided on the overflow pipe I; the overflow port is connected to the water storage tank through an overflow pipe II, and an electromagnetic flowmeter II is provided on the overflow pipe II.

[0012] In one embodiment of the present invention, the water inlet pipe is provided with an electromagnetic flowmeter III, a control valve I for controlling the on-off of the water inlet pipe and the water inlet diversion groove, and a control valve II for controlling the on-off of the water inlet pipe and the water inlet groove.

[0013] In one embodiment of the present invention, water level gauges are respectively provided in the water inlet trough and the water collection trough.

[0014] In one embodiment of the present invention, both the supporting transverse plate and the supporting vertical plate are provided with an opening area for installing the grid plate to be detected.

[0015] In one embodiment of the present invention, the water confluence outlet is conical.

[0016] In one embodiment of the present invention, the height of the overflow port is 1-2 cm higher than the height of the water retaining plate.

[0017] In one embodiment of the present invention, the water flux calculation formula of the vertical flow grid plate or the lateral flow grid plate is as follows:

[0018] ,

[0019] Where: Q IN It is the water flow rate data of the vertical flow grid plate test device or the lateral flow grid plate test device, in m 3 / h;Q OF The overflow flow data of the outlet trough of the vertical flow grid plate test device or the overflow flow data of the overflow port of the lateral flow grid plate test device, in m 3 / h; S is the area of ​​the grid to be detected, unit: m 2 ; R is the aperture of the grid plate to be tested, in mm; L1 and L2 are the center spacings of the horizontal and vertical holes of the grid plate 14 to be tested, in mm; when the opening specifications of the grid plate to be tested are round holes with an angle of 60° and staggered openings K The value is 90.69, the hole specification is round hole 45°, staggered hole K The value is 78.50, when the hole specifications are round holes and straight holes K The value is 78.50.

[0020] The present invention also provides a grid plate water flux test method for vertical flow grid plate flux test, using the grid plate water flux test system described in the claims, the test method comprising:

[0021] Controlling to close the drain valve, and filling the water storage tank with clean water through the water injection port;

[0022] Installing the grid plate to be detected on the supporting horizontal plate;

[0023] Control to open the water outlet valve and the control valve I, and close the control valve II;

[0024] By adjusting the height of the water level regulating plate, the water level of the grid plate to be tested is adjusted;

[0025] Controlling and starting the variable frequency lifting pump, adjusting the operating frequency of the variable frequency lifting pump, and the variable frequency lifting pump lifts the clean water in the water storage tank into the water inlet diversion groove through the water inlet pipe;

[0026] Clean water flows into the supporting horizontal plate through the water inlet guide groove, and a part of the clean water flows into the water confluence port after passing through the grid plate to be detected, and flows into the water storage tank; another part of the clean water flows into the overflow groove after passing through the water level regulating plate, and flows into the water storage tank through the overflow pipe I;

[0027] Obtaining the submerged height of the grid plate to be detected;

[0028] The electromagnetic flowmeter I is used to read the overflow flow data of the vertical overflow tank in real time, and the electromagnetic flowmeter III is used to read the water inlet flow data of the vertical flow grid plate test device in real time;

[0029] The water flux of the vertical flow grid plate is obtained according to the overflow flow data and the water inlet flow data.

[0030] The present invention also provides a grid plate water flux test method for lateral flow grid plate flux test, using the grid plate water flux test system, the test method comprises:

[0031] Controlling to close the drain valve, and filling the water storage tank with clean water through the water injection port;

[0032] Installing the grid plate to be detected on the supporting vertical plate;

[0033] Control to open the water outlet valve and the control valve II, and close the control valve I;

[0034] Controlling to start the variable frequency lifting pump, adjusting the operating frequency of the variable frequency lifting pump, and the variable frequency lifting pump lifts the clean water in the water storage tank into the water inlet tank through the water inlet pipe;

[0035] The clean water entering the water inlet trough flows through the grid plate to be detected and then enters the water collection trough. A portion of the clean water flows through the water baffle plate and then flows into the water outlet trough, and then flows into the water storage tank through the connecting port at the bottom of the water outlet trough; the other portion of the clean water flows into the water storage tank through the overflow port and the overflow pipe II.

[0036] According to the scales of the water level gauges of the water inlet trough and the water collection trough, the water level difference before and after the grid plate to be tested is obtained;

[0037] The overflow flow data of the overflow port is read by the electromagnetic flowmeter II, and the water inlet flow data of the lateral flow grid plate testing device is read in real time by the electromagnetic flowmeter III;

[0038] The water flux of the lateral flow grid plate is obtained according to the overflow flow data and the water inlet flow data.

[0039] The above technical solution of the present invention has the following advantages compared with the prior art:

[0040] The vertical flow and lateral flow grid plate test devices of the test system of the present invention are respectively installed in the water storage tank. The water flow guidance, flow regulation, and flow measurement in the test process are all realized through automatic control elements such as electromagnetic flowmeters and control valves, which simplifies the operation steps, reduces manual intervention, ensures the stability and reliability of the test system, and has the advantages of reasonable and compact structure, simple and convenient operation and accurate measurement results.

[0041] The present invention can meet the water flux test of grid plates with different opening specifications and different opening apertures.

[0042] The present invention can satisfy the water flux test of vertical flow grating plates at different grating surface submergence depths and the water flux test of lateral flow grating plates at different grating front and rear liquid level differences. By adjusting the height of the water level regulating plate or regulating the water level difference between the water inlet trough and the water collection trough, a variety of test scenarios can be achieved. In addition, the vertical flow grating plate test can be carried out at different submergence depths, and the lateral flow grating plate test can be adjusted according to the front and rear liquid level difference, which provides a reliable basis for the performance evaluation of grating plates in various practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0044] Figure 1A schematic top view of a grid water flux testing system according to the present invention.

[0045] Figure 2 A schematic structural diagram of a vertical flow grid plate test device of a grid plate water flux test system of the present invention.

[0046] Figure 3 A schematic structural diagram of a lateral flow grid plate test device of a grid plate water flux test system of the present invention.

[0047] Description of the Figures in the Specification:

[0048] 1. Water storage tank; 2. Vertical flow grid plate test device; 3. Lateral flow grid plate test device; 4. Variable frequency lifting pump; 5. Control device; 6. Water filling port; 7. Drain pipe; 8. Vent valve; 9. Water inlet guide trough; 10. Support horizontal plate; 11. Water confluence port; 12. Water level regulating plate; 13. Overflow trough; 14. Grid to be tested; 15. Overflow pipe I; 16. Electromagnetic flowmeter I; 17. Water inlet trough; 18. Support vertical plate; 19. Water confluence trough; 20. Water retaining plate; 21. Water outlet trough; 22. Overflow port; 23. Overflow pipe II; 24. Electromagnetic flowmeter II; 26. Water outlet pipe; 27. Water outlet valve; 28. Water inlet pipe; 29. ​​Electromagnetic flowmeter III; 30. Control valve I; 31. Control valve II. DETAILED DESCRIPTION

[0049] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0050] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation of the present invention.

[0051] In the present invention, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of the present invention, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0052] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected or electrically connected or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0053] Example 1

[0054] Reference Figures 1 to 3 As shown, a grid water flux test system of the present invention comprises:

[0055] A water storage tank 1, wherein a water inlet 6 is provided at the top of the water storage tank 1, a drain pipe 7 is provided at the bottom of the side, and a drain valve 8 is provided on the drain pipe 7;

[0056] The vertical flow grid plate test device 2 is installed on the top of the water storage tank 1, and includes a supporting transverse plate 10 for installing the vertical flow grid plate, a water inlet guide groove 9 located beside the supporting transverse plate 10, a water confluence port 11 located at the lower part of the supporting transverse plate 10 and connected to the top of the water storage tank 1, and a water level regulating plate 12 installed on the supporting transverse plate 10 in a height-adjustable manner; wherein an overflow groove 13 connected to the water storage tank 1 is formed on one side of the water level regulating plate 12;

[0057] The lateral flow grid plate test device 3 is installed on the top of the water storage tank 1, and includes a support vertical plate 18 for installing the lateral flow grid plate and a water inlet trough 17 and a water collection trough 19 respectively located on both sides of the support vertical plate 18; wherein the water collection trough 19 is provided with an overflow port 22, a water baffle plate 20 is provided on the side of the water collection trough 19, and a water outlet trough 21 is provided on one side of the water baffle plate 20; the bottom of the water outlet trough 21 and the overflow port 22 are respectively connected to the top of the water storage tank 1;

[0058] A variable frequency lifting pump 4, the water inlet end of the variable frequency lifting pump 4 is connected to the water storage tank 1 through a water outlet pipe 26, and a water outlet valve 27 is provided on the water outlet pipe 26; the water outlet end of the variable frequency lifting pump 4 is connected to the water inlet guide groove 9 and the water inlet groove 17 respectively through a water inlet pipe 28.

[0059] Specifically, the bottom of the overflow trough 13 is connected to the top of the water storage tank 1 through an overflow pipe Ⅰ15, and an electromagnetic flowmeter Ⅰ16 is provided on the overflow pipe Ⅰ15; the overflow port 22 is connected to the water storage tank 1 through an overflow pipe Ⅱ23, and an electromagnetic flowmeter Ⅱ24 is provided on the overflow pipe Ⅱ23.

[0060] Specifically, the water inlet pipe 28 is provided with an electromagnetic flowmeter III 29 , a control valve I 30 for controlling the on-off of the water inlet pipe 28 and the water inlet diversion groove 9 , and a control valve II 31 for controlling the on-off of the water inlet pipe 28 and the water inlet groove 17 .

[0061] Specifically, the water inlet trough 17 and the water collection trough 19 are respectively provided with water level gauges, which can accurately read the water level height.

[0062] Specifically, both the supporting transverse plate 10 and the supporting vertical plate 18 are provided with an opening area for installing the grid plate 14 to be detected.

[0063] Specifically, the water confluence port 11 is conical; the height of the overflow port 22 is 1-2 cm higher than the height of the water baffle 20. The conical confluence port 11 design improves the water flow collection efficiency and reduces the turbulence of the fluid. The overflow port 22 is 1-2 cm higher than the water baffle 20, ensuring the stable overflow of the water flow and avoiding the influence of the turbulence of the water flow on the accuracy during the test.

[0064] Specifically, it also includes a control device 5 (such as a PLC), which is respectively connected to the variable frequency lift pump 4, the electromagnetic flowmeter I 16, the electromagnetic flowmeter II 24, the electromagnetic flowmeter III 29, the control valve I 30 and the control valve II 31.

[0065] Specifically, the water flux calculation formula of the vertical flow grid plate or the lateral flow grid plate is as follows:

[0066] ,

[0067] Where: Q IN The water flow rate data of the vertical flow grid plate test device 2 or the lateral flow grid plate test device 3, in m 3 / h;Q OF The overflow flow data of the outlet trough 21 of the vertical flow grid plate test device 2 or the overflow flow data of the overflow port 22 of the lateral flow grid plate test device 3, in m 3 / h; S is the area of ​​the grid plate 14 to be detected, unit: m 2 ; R is the aperture of the grid plate 14 to be detected, in mm; L1 and L2 are the center spacings of the horizontal and vertical holes of the grid plate 14 to be detected, in mm; when the hole specifications of the grid plate 14 to be detected are round holes with an angle of 60° and staggered holes K The value is 90.69, the hole specification is round hole 45°, staggered hole K The value is 78.50, when the hole specifications are round holes and straight holes K The value is 78.50.

[0068] The calculation formula of the water flux accurately considers key parameters such as water inlet flow, overflow flow, grid area, hole diameter and hole spacing, and provides a universal calculation method for grids with different hole specifications.

[0069] Example 2

[0070] This embodiment provides a grid plate water flux test method for vertical flow grid plate flux test, using the grid plate water flux test system described in embodiment 1, the test method includes:

[0071] S1, control the vent valve 8 to close, and fill the water storage tank 1 with clean water through the water injection port 6;

[0072] S2, installing the grid plate 14 to be detected in the opening area of ​​the supporting horizontal plate 10;

[0073] S3, control to open the water outlet valve 27 and the control valve I 30, and close the control valve II 31;

[0074] S4, adjusting the height of the water level regulating plate 12 to adjust the water level of the grid plate to be detected 14;

[0075] S5, control to start the variable frequency boost pump 4, adjust the operating frequency of the variable frequency boost pump 4 through the control device 5, and the variable frequency boost pump 4 lifts the clean water in the water storage tank 1 into the water inlet guide groove 9 through the water inlet pipe 28;

[0076] S6, clean water flows into the supporting horizontal plate 10 through the water inlet guide groove 9, a part of the clean water flows into the water inlet 11 after passing through the to-be-detected grid plate 14, and flows into the water storage tank 1; another part of the clean water flows through the water level regulating plate 12 and flows into the overflow groove 13, and flows into the water storage tank 1 through the overflow pipe I 15;

[0077] S7, obtaining the submerged height of the grid plate 14 to be detected;

[0078] S8. The overflow flow data of the vertical overflow trough 13 is read in real time through the electromagnetic flowmeter I16, and the water inlet flow data of the vertical flow grid plate testing device 2 is read in real time through the electromagnetic flowmeter III29. The control device 5 obtains the water flux of the vertical flow grid plate according to the overflow flow data and the water inlet flow data (calculated according to the water flux calculation formula).

[0079] Example 3

[0080] This embodiment provides a grid plate water flux test method for lateral flow grid plate flux test, using the grid plate water flux test system described in embodiment 1, the test method includes:

[0081] S1, control the vent valve 8 to close, and fill the water storage tank 1 with clean water through the water injection port 6;

[0082] S2, installing the grid plate 14 to be detected in the opening area of ​​the supporting vertical plate 18;

[0083] S3, control to open the water outlet valve 27 and the control valve II 31, and close the control valve I 30;

[0084] S4, control to start the variable frequency boost pump 4, adjust the operating frequency of the variable frequency boost pump 4 through the control device 5, and the variable frequency boost pump 4 lifts the clean water in the water storage tank 1 into the water inlet tank 17 through the water inlet pipe 28;

[0085] S5, the clean water entering the water inlet trough 17 flows through the to-be-detected grid plate 14 installed on the supporting vertical plate 18, and then enters the water collection trough 19, a part of the clean water flows through the water baffle 20 and flows into the water outlet trough 21, and flows into the water storage tank 1 through the connecting port at the bottom of the water outlet trough 21; the other part of the clean water flows into the water storage tank 1 through the overflow port 22 and the overflow pipe II 23;

[0086] S6, obtaining the water level difference before and after the grid plate 14 to be detected according to the scales of the water level gauges of the water inlet trough 17 and the water collection trough 19;

[0087] S7. The overflow flow data of the overflow port 22 is read through the electromagnetic flowmeter II 24, and the water inlet flow data of the lateral flow grid plate testing device 3 is read in real time through the electromagnetic flowmeter III 29. The control device 5 obtains the water flux of the lateral flow grid plate according to the overflow flow data and the water inlet flow data (calculated according to the water flux calculation formula).

[0088] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A grid plate water flux test system, characterized in that: include: A water storage tank (1) is provided with a water inlet (6) and a drain pipe (7), wherein the drain pipe (7) is provided with a drain valve (8); A vertical flow grid plate testing device (2), comprising a supporting transverse plate (10) for mounting the vertical flow grid plate, a water inlet guide groove (9) located beside the supporting transverse plate (10), a water confluence (11) located below the supporting transverse plate (10) and connected to the water storage tank (1), and a water level regulating plate (12) mounted on the supporting transverse plate (10) in a height-adjustable manner; wherein an overflow groove (13) connected to the water storage tank (1) is formed on one side of the water level regulating plate (12); A lateral flow grid plate testing device (3), comprising a supporting upright plate (18) for mounting the lateral flow grid plate, and a water inlet trough (17) and a water collection trough (19) respectively located on both sides of the supporting upright plate (18); wherein the water collection trough (19) is provided with an overflow port (22), a water baffle (20) is provided on the side of the water collection trough (19), and a water outlet trough (21) is provided on one side of the water baffle (20); the water outlet trough (21) and the overflow port (22) are respectively connected to the water storage tank (1); A variable frequency lifting pump (4), wherein the water inlet end of the variable frequency lifting pump (4) is connected to the water storage tank (1) via a water outlet pipe (26), and a water outlet valve (27) is provided on the water outlet pipe (26); the water outlet end of the variable frequency lifting pump (4) is connected to the water inlet guide groove (9) and the water inlet groove (17) respectively via a water inlet pipe (28); The calculation formula for the water flux of the vertical flow grid plate or the lateral flow grid plate is as follows: ， Where: Q IN The water flow rate data of the vertical flow grid plate test device (2) or the lateral flow grid plate test device (3), in m 3 / h;Q OF The overflow flow data of the outlet trough (21) of the vertical flow grid plate test device (2) or the overflow flow data of the overflow port (22) of the lateral flow grid plate test device (3), in m 3 / h; S is the area of ​​the grid plate (14) to be detected, in m 2 ; R is the hole diameter of the grid plate (14) to be detected, in mm; L1 and L2 are the center spacings of the horizontal and vertical holes of the grid plate (14) to be detected, in mm; when the hole specifications of the grid plate (14) to be detected are round holes with an angle of 60° and staggered holes K The value is 90.69, the hole specification is round hole 45°, staggered hole K The value is 78.50, when the hole specifications are round holes and straight holes K The value is 78.

50.

2. A grid water flux test system according to claim 1, characterized in that: The overflow trough (13) is connected to the water storage tank (1) via an overflow pipe I (15), and an electromagnetic flowmeter I (16) is provided on the overflow pipe I (15); the overflow port (22) is connected to the water storage tank (1) via an overflow pipe II (23), and an electromagnetic flowmeter II (24) is provided on the overflow pipe II (23).

3. A grid water flux test system according to claim 2, characterized in that: The water inlet pipe (28) is provided with an electromagnetic flowmeter III (29), a control valve I (30) for controlling the on-off connection between the water inlet pipe (28) and the water inlet guide groove (9), and a control valve II (31) for controlling the on-off connection between the water inlet pipe (28) and the water inlet groove (17).

4. A grid water flux test system according to claim 3, characterized in that: The water inlet trough (17) and the water collection trough (19) are respectively provided with water level gauges.

5. A grid water flux test system according to claim 1, characterized in that: The supporting transverse plate (10) and the supporting vertical plate (18) are both provided with an opening area for installing the grid plate (14) to be detected.

6. A grid water flux test system according to claim 1, characterized in that: The water confluence port (11) is conical.

7. A grid water flux test system according to claim 1, characterized in that: The height of the overflow port (22) is 1-2 cm higher than the height of the water retaining plate (20).

8. A grid plate water flux test method for vertical flow grid plate flux test, characterized in that: Using the grid water flux test system of claim 3, the test method comprises: Controlling the vent valve (8) to close, and filling the water storage tank (1) with clean water through the water inlet (6); Mounting the grid plate (14) to be detected on the supporting horizontal plate (10); Controlling to open the water outlet valve (27) and the control valve I (30), and closing the control valve II (31); By adjusting the height of the water level regulating plate (12), the water level of the grid plate (14) to be detected is adjusted; Controlling and starting the variable frequency lifting pump (4), adjusting the operating frequency of the variable frequency lifting pump (4), so that the variable frequency lifting pump (4) lifts the clean water in the water storage tank (1) through the water inlet pipe (28) and enters the water inlet guide groove (9); Clean water flows into the supporting horizontal plate (10) through the water inlet guide groove (9), a portion of the clean water flows into the water confluence port (11) after passing through the to-be-detected grid plate (14), and flows into the water storage tank (1); another portion of the clean water flows through the water level regulating plate (12), flows into the overflow groove (13), and flows into the water storage tank (1) through the overflow pipe I (15); Obtaining the submerged height of the grid plate (14) to be detected; The electromagnetic flowmeter I (16) is used to read overflow flow data of the vertical overflow tank (13) in real time, and the electromagnetic flowmeter III (29) is used to read water inlet flow data of the vertical flow grid plate test device (2) in real time; The water flux of the vertical flow grid plate is obtained according to the overflow flow data and the water inlet flow data.

9. A grid plate water flux test method for lateral flow grid plate flux test, characterized in that: Using the grid water flux test system according to claim 4, the test method comprises: Controlling the vent valve (8) to close, and filling the water storage tank (1) with clean water through the water inlet (6); Installing the grid plate (14) to be detected on the supporting vertical plate (18); Controlling to open the water outlet valve (27) and the control valve II (31), and closing the control valve I (30); Controlling and starting the variable frequency lifting pump (4), adjusting the operating frequency of the variable frequency lifting pump (4), so that the variable frequency lifting pump (4) lifts the clean water in the water storage tank (1) through the water inlet pipe (28) and enters the water inlet tank (17); The clean water entering the water inlet trough (17) flows through the to-be-detected grid plate (14) and then enters the water collection trough (19). A portion of the clean water flows through the water baffle plate (20) and then flows into the water outlet trough (21), and then flows into the water storage tank (1) through the connecting port at the bottom of the water outlet trough (21); the other portion of the clean water flows into the water storage tank (1) through the overflow port (22) and the overflow pipe II (23); Obtaining the water level difference before and after the grid plate (14) to be detected according to the scales of the water level gauges of the water inlet trough (17) and the water collection trough (19); The overflow flow data of the overflow port (22) is read by the electromagnetic flow meter II (24), and the water inlet flow data of the lateral flow grid plate testing device (3) is read in real time by the electromagnetic flow meter III (29); The water flux of the lateral flow grid plate is obtained according to the overflow flow data and the water inlet flow data.

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