A test device and test method for a trash removal machine based on dynamic water flow simulation

Abstract

The application discloses a kind of based on dynamic water flow simulation's cleaning machine testing device and testing method, belong to cleaning machine test technical field, including flow channel, first steady flow structure and second steady flow structure are equipped in flow channel, installation platform is equipped in the flow channel between first steady flow structure and second steady flow structure, cleaning machine is arranged on installation platform, liquid level measuring unit is equipped in the flow channel of the two sides of cleaning machine;The position of installation platform is close to the position of cleaning machine and is equipped with blockage cleaning and weighing mechanism;The top of flow channel is equipped with blockage input weighing mechanism;The side of flow channel is equipped with the two ends of pipeline communication flow channel, circulation water pump and flowmeter are equipped on the pipeline.The application provides a kind of based on dynamic water flow simulation's cleaning machine testing device and testing method, can simulate dynamic water flow condition, automatically add blockage, real-time acquisition multiple parameters and quickly assess the performance of cleaning machine, to reduce engineering application risk and promote design optimization basis.

Description

Technical Field

[0001] This invention relates to the field of cleaning machine testing technology, specifically to a cleaning machine testing device and method based on dynamic water flow simulation. Background Technology

[0002] Traditional testing methods for screen cleaning machines are based on the "Manufacturing, Installation and Acceptance Specifications for Screen Cleaning Machines in Water Conservancy and Hydropower Projects".

[0003] (T / CWEC 29) only includes no-load operation tests, static and dynamic load tests, and load tests (counterweight simulation) under dry conditions. These methods have the following drawbacks:

[0004] First, it cannot simulate the real water flow environment. The cleaning machine actually works in dynamic water flow, and dry testing cannot reflect its key performance such as interception efficiency and water flow resistance, which may lead to low cleaning efficiency or equipment failure in engineering applications.

[0005] Second, manual addition of blockages has large errors. Traditional testing relies on manual addition of simulated blockages (such as garbage and aquatic plants), which can easily lead to uneven distribution and large weight errors, affecting the reliability of the data.

[0006] Third, the parameter acquisition is singular, only recording the mechanical operating status (such as speed and current), lacking comprehensive monitoring of multiple parameters such as water flow, water level difference, and cleaning efficiency in the application scenario;

[0007] Fourth, the testing cycle is long, with a single test taking more than 2 hours, resulting in low testing efficiency and difficulty in meeting the testing needs of mass production. Summary of the Invention

[0008] To address the problems existing in the prior art, this invention provides a testing device and method for a cleaning machine based on dynamic water flow simulation. This device can simulate dynamic water flow conditions, automatically add blockages, collect multiple parameters in real time, and quickly evaluate the performance of the cleaning machine, thereby reducing engineering application risks and improving the basis for design optimization.

[0009] The technical solution of the present invention is as follows:

[0010] In a first aspect of the invention, a testing device for a cleaning machine based on dynamic water flow simulation is provided, comprising a flow channel, a first flow stabilizing structure and a second flow stabilizing structure provided within the flow channel, an installation platform provided within the flow channel between the first flow stabilizing structure and the second flow stabilizing structure, a cleaning machine provided on the installation platform, liquid level measuring units provided in the flow channels on both sides of the cleaning machine; a blockage removal weighing mechanism provided on the installation platform near the cleaning machine; a blockage input weighing mechanism provided at the top of the flow channel; and a pipe provided on the side of the flow channel connecting the two ends of the flow channel, with a circulating water pump and a flow meter provided on the pipe.

[0011] In some embodiments of the present invention, the two ends of the first flow stabilizing structure are in contact with the inner wall of the flow channel, and the two ends of the second flow stabilizing structure are in contact with the inner wall of the flow channel.

[0012] In some embodiments of the present invention, the first flow stabilizing structure and the second flow stabilizing structure are configured as rectangular plate structures, wherein the width of the first flow stabilizing structure is consistent with the width of the inner wall of the flow channel, and the width of the second flow stabilizing structure is consistent with the width of the inner wall of the flow channel.

[0013] In some embodiments of the present invention, the height of the first flow stabilizing structure is less than the height of the inner wall of the flow channel, and the height of the second flow stabilizing structure is less than the height of the inner wall of the flow channel.

[0014] In some embodiments of the present invention, both the first flow stabilizing structure and the second flow stabilizing structure are composed of cooling tower packing.

[0015] In some embodiments of the present invention, the pipe is provided with an inlet and an outlet at both ends. The inlet is disposed in a first cavity formed by the first flow stabilizing structure and the inner wall of one end of the flow channel, and the outlet is disposed in a second cavity formed by the second flow stabilizing structure and the inner wall of the other end of the flow channel.

[0016] In some embodiments of the present invention, the blockage feeding and weighing mechanism is provided with a drive motor and a container, the two ends of the container being rotatably mounted on the inner walls of both sides of the flow channel; the drive motor is disposed on the side wall of the flow channel, the output end of the drive motor is connected to a rotating shaft, and the rotating shaft is connected to one end of the container.

[0017] In some embodiments of the present invention, the circulating water pump is controlled by a variable frequency drive.

[0018] In a second aspect of the invention, a testing method for a screen cleaner testing device based on dynamic water flow simulation is provided, wherein the screen cleaner is tested under normal operating conditions, including:

[0019] Set the cleaning machine to be tested on the installation platform, put the blockage into the weighing mechanism installed at the top of the flow channel, and fill the flow channel with water to the set liquid level.

[0020] Start the circulating water pump and stabilize the water flow through the first and second flow stabilizing mechanisms;

[0021] The blockage is introduced into the flow channel through a blockage input weighing mechanism, and the weight parameters of the blockage are recorded.

[0022] When the cleaning machine is started, the blockage removal weighing mechanism weighs the blockage removed by the cleaning machine to obtain the blockage removal weight parameter. The liquid level measurement unit collects the liquid level difference information on both sides of the cleaning machine in real time, and the flow meter collects the water flow information in the pipeline in real time.

[0023] Record the time it takes for the cleaning machine to remove the blockages that were previously placed in the flow channel;

[0024] The cleaning capacity parameters of the cleaning machine are calculated by the weight parameters of the blockage removed and the cleaning time, and the cleaning efficiency parameters are calculated by the weight parameters of the blockage input and the weight parameters of the blockage removed.

[0025] In some embodiments of the present invention, when the cleaning machine is tested under extreme operating conditions, it includes:

[0026] Set the cleaning machine to be tested on the installation platform, put the blockage into the weighing mechanism installed at the top of the flow channel, and fill the flow channel with water to the set liquid level.

[0027] When the cleaning machine is not working, the blockage is added to the flow channel through the blockage input weighing mechanism. The liquid level measurement unit collects the liquid level difference information parameters on both sides of the cleaning machine in real time up to the start water level and calculates and records the blockage rate.

[0028] Continue to add blockage material, and collect the liquid level difference information parameters on both sides of the cleaning machine in real time through the liquid level measurement unit until the alarm water level is reached. Calculate and record the blockage rate, and start the cleaning machine to clear the blockage material.

[0029] One or more technical solutions of the present invention have the following beneficial effects:

[0030] This invention provides a testing device and method for a cleaning machine based on dynamic water flow simulation. Through a highly integrated testing system, it simulates the operating conditions of a cleaning machine under real water flow conditions and achieves automated multi-parameter acquisition and efficient analysis. It relies not only on the improved testing effect of individual mechanisms and systems but also on the deep collaboration and linkage between various mechanisms. Specifically, a dynamic water flow generation mechanism is set up to obtain the dynamic water flow conditions under the testing state of the cleaning machine, simulating the actual working conditions of the cleaning machine. A blockage material weighing mechanism is set up to replace manual addition of blockage material, avoiding uneven distribution and large weight errors that could affect the reliability of the test data. A multi-parameter acquisition system is set up to collect and calculate various parameters during the operation of the cleaning machine, enabling effective testing of the cleaning capacity during normal operation and under extreme operating conditions. This achieves performance verification of the cleaning machine under real operating conditions and overcomes the shortcomings of traditional testing methods.

[0031] Specifically, a dynamic water flow generation mechanism is set up. Through the coordinated action of circulating water pumps, flow stabilization devices and flow channels, the actual usage conditions such as river flow velocity and turbulence intensity are accurately simulated. This allows the cleaning machine to withstand the same water flow impact and resistance as in actual working conditions during the test. Compared with traditional dry testing, this reduces the test error of the cleaning machine's interception efficiency under dynamic water flow conditions and improves the authenticity of the cleaning machine's test environment and the reliability of the test data.

[0032] The linkage control between the blockage feeding weighing mechanism and the multi-parameter acquisition system greatly shortens the single test cycle time and enables rapid fault diagnosis. When the cleaning machine is malfunctioning, the multi-parameter acquisition system triggers an alarm in real time and records the water flow, feeding and mechanical status data at the time of the fault, thus shortening the fault troubleshooting time.

[0033] By integrating parameters such as water flow rate, liquid level difference, and cleaning weight, key performance indicators such as cleaning capacity are constructed to quantify the amount of cleaning machine processed per unit time; cleaning efficiency reflects the interception effect and energy consumption ratio; blockage rate-water level difference evaluates the response characteristics of the cleaning machine to water level fluctuations; and extreme recovery time is the time it takes for the equipment to return to normal operation under overload conditions, thus achieving a comprehensive test and evaluation of the cleaning machine.

[0034] This device is used to conduct extreme working condition tests on the cleaning machine. By simulating harsh scenarios (such as a surge in garbage after a rainstorm), the anti-clogging ability of the cleaning machine is verified, and the design defects exposed in the test are examined. This provides direction and data support for further improvement and optimization of the cleaning machine, and reduces the failure rate of the cleaning machine. Attached Figure Description

[0035] Figure 1 This is a top view schematic diagram of the overall structure of a cleaning machine testing device based on dynamic water flow simulation provided in Embodiment 1 of the present invention;

[0036] Figure 2 This is a front view schematic diagram of the overall structure of a cleaning machine testing device based on dynamic water flow simulation provided in Embodiment 1 of the present invention;

[0037] In the diagram: 1. Circulating water pump; 2. Pipeline; 3. Flow channel; 4. First flow stabilizing structure; 5. Blockage input weighing mechanism; 6. Blockage removal weighing mechanism; 7. Second flow stabilizing structure; 8. Liquid level measurement unit; 9. Installation platform; 10. Flow meter. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0039] Example 1

[0040] In a typical embodiment of the present invention, a cleaning machine testing device based on dynamic water flow simulation is proposed, comprising a flow channel 3, wherein a first flow stabilizing structure 4 and a second flow stabilizing structure 7 are provided in the flow channel 3, and an installation platform 9 is provided in the flow channel 3 between the first flow stabilizing structure 4 and the second flow stabilizing structure 7. A cleaning machine is installed on the installation platform 9, and liquid level measuring units 8 are provided in the flow channels 3 on both sides of the cleaning machine. A blockage removal weighing mechanism 6 is provided on the installation platform 9 near the cleaning machine. A blockage input weighing mechanism 5 is provided at the top of the flow channel 3. A pipe 2 is provided on the side of the flow channel 3 connecting the two ends of the flow channel 3, and a circulating water pump 1 and a flow meter 10 are provided on the pipe 2.

[0041] The testing device proposed in this invention can simulate dynamic water flow conditions, automatically add blockages, collect multiple parameters in real time, and quickly evaluate the performance of the cleaning machine, thereby reducing engineering application risks and improving the basis for design optimization. The dynamic water flow generation can simulate real river water flow, making the test environment consistent with actual working conditions; the automated material addition eliminates human error and ensures uniform distribution of blockages; the liquid level measurement unit 8, the blockage addition weighing mechanism 5, and the blockage removal weighing mechanism 6 constitute a multi-parameter acquisition system to comprehensively monitor the performance of the cleaning machine and provide quantitative evaluation basis.

[0042] Furthermore, the two ends of the first flow stabilizing structure 4 are in contact with the inner wall of the flow channel 3, and the two ends of the second flow stabilizing structure 7 are in contact with the inner wall of the flow channel 3.

[0043] In this embodiment, the flow channel 3 is set as a rectangular flow channel 3. Both ends of the first flow stabilizing structure 4 and both ends of the second flow stabilizing structure 7 are in contact with the inner wall of the flow channel 3, which can fully contact and stabilize the flowing water in the flow channel 3, and prevent water flow fluctuations and impacts from affecting the test results.

[0044] Furthermore, the first flow stabilizing structure 4 and the second flow stabilizing structure 7 are configured as rectangular plate structures, the width of the first flow stabilizing structure 4 is consistent with the width of the inner wall of the flow channel 3, and the width of the second flow stabilizing structure 7 is consistent with the width of the inner wall of the flow channel 3.

[0045] In this embodiment, by setting the first flow stabilizing structure 4 and the second flow stabilizing structure 7 as rectangular plate structures, and setting the first flow stabilizing structure 4 and the second flow stabilizing structure 7 perpendicular to the flow channel 3, it is convenient to produce and easy to install into the flow channel 3 for easy use, while ensuring the flow stabilizing effect.

[0046] Furthermore, the height of the first flow stabilizing structure 4 is less than the height of the inner wall of the flow channel 3, and the height of the second flow stabilizing structure 7 is less than the height of the inner wall of the flow channel 3.

[0047] In this embodiment, by setting the heights of the first flow stabilizing structure 4 and the second flow stabilizing structure 7 to be greater than the height of the water flow in the channel 3, the flow stabilization effect is ensured, while the heights of the first flow stabilizing structure 4 and the second flow stabilizing structure 7 are less than the height of the inner wall of the channel 3, which can reduce the production cost of the device.

[0048] Furthermore, both the first flow stabilizing structure 4 and the second flow stabilizing structure 7 are composed of cooling tower packing.

[0049] This setup effectively eliminates turbulence, ensures uniform water flow distribution within channel 3, and reduces testing errors. Furthermore, the cooling tower packing is low in cost, highly durable, and suitable for long-term cyclic testing.

[0050] Furthermore, the pipe 2 is provided with an inlet and an outlet at both ends. The inlet is located in the first cavity formed by the first flow stabilizing structure 4 and the inner wall of one end of the flow channel 3, and the outlet is located in the second cavity formed by the second flow stabilizing structure 7 and the inner wall of the other end of the flow channel 3. By connecting the two cavities with the pipe 2, the flow stabilization effect can be effectively guaranteed.

[0051] Furthermore, the blockage-feeding weighing mechanism 5 is equipped with a drive motor and a container. The two ends of the container are rotatably mounted on the inner walls of both sides of the flow channel 3. The drive motor is located on the side wall of the flow channel 3, and the output end of the drive motor is connected to a rotating shaft, which is connected to one end of the container.

[0052] By incorporating a blockage-feeding weighing mechanism 5, the blockage is automatically, quickly, and evenly added to the test flow channel 3 using the gravity generated by the flipping mechanism. This automated feeding eliminates human error, ensures uniform blockage distribution, and guarantees the accuracy of test results. The feeding speed and weight are controllable, avoiding uneven distribution caused by manual operation; the structure is simple and reliable, with low maintenance costs.

[0053] Furthermore, the circulating water pump 1 employs frequency conversion control. This configuration allows for precise flow control by adjusting the rotational speed, adapting to different flow rate testing requirements, while also saving energy and reducing consumption, and avoiding water flow disturbances caused by valve adjustments.

[0054] In a second aspect of the invention, a testing method for a screen cleaner testing device based on dynamic water flow simulation is provided, wherein the screen cleaner is tested under normal operating conditions, including:

[0055] Set the cleaning machine to be tested on the installation platform 9, put the blockage into the weighing mechanism 5 installed on the top of the flow channel 3, and fill the flow channel 3 with water to the set liquid level.

[0056] Start circulating water pump 1, and stabilize the water flow through the first flow stabilizing mechanism and the second flow stabilizing mechanism;

[0057] The blockage is fed into the flow channel 3 through the blockage feeding and weighing mechanism 5, and the weight parameters of the blockage are recorded.

[0058] Start the cleaning machine, and the blockage removal weighing mechanism 6 weighs the blockage removed by the cleaning machine to obtain the blockage removal weight parameter. The liquid level measurement unit 8 collects the liquid level difference information parameter on both sides of the cleaning machine in real time, and the flow meter 10 collects the water flow information parameter in the pipe 2 in real time.

[0059] Record the cleaning time parameters of the blockage removed by the cleaning machine after it cleaned the blockages in the flow channel 3;

[0060] The cleaning capacity parameters of the cleaning machine are calculated by the weight parameters of the blockage removed and the cleaning time, and the cleaning efficiency parameters are calculated by the weight parameters of the blockage input and the weight parameters of the blockage removed.

[0061] Furthermore, the cleaning machine is tested under extreme operating conditions, including:

[0062] Set the cleaning machine to be tested on the installation platform 9, put the blockage into the weighing mechanism 5 installed on the top of the flow channel 3, and fill the flow channel 3 with water to the set liquid level.

[0063] When the cleaning machine is not working, the blockage is added into the flow channel 3 through the blockage input weighing mechanism 5. The liquid level measurement unit 8 collects the liquid level difference information parameters on both sides of the cleaning machine in real time up to the starting water level and calculates and records the blockage rate.

[0064] Continue to add blockage material, and collect the liquid level difference information parameters on both sides of the cleaning machine in real time through the liquid level measurement unit 8 until the alarm water level is reached. Calculate and record the blockage rate, and start the cleaning machine to clear the blockage material.

[0065] In this embodiment, the calculation of the cleaning capability parameter is specifically as follows:

[0066]

[0067] In the formula, D c This indicates the cleaning capacity parameter, in kg / min; W i The unit is the weight of the blockage removed, expressed in kg; T is the cleaning time.

[0068] The calculation of the cleaning efficiency parameter is as follows:

[0069]

[0070] The unit is min; η represents the cleaning efficiency parameter; W t This indicates the weight of the blockage material added, in kg.

[0071] In this embodiment, the calculation of the congestion rate is specifically as follows:

[0072]

[0073] Where: K represents the blockage rate, which is the percentage of the total flow area of ​​the screen in the cleaning machine;

[0074] F0 represents the total clean flow area of ​​the screen in the cleaning machine, in square meters;

[0075] F1 indicates the total area of ​​the grille, in square meters;

[0076] F2 indicates the area blocked by the blockage, in square meters (m²).

[0077] f represents the percentage of total flow through the grille;

[0078] ΔH r This indicates the water level difference before and after the screen, in Pa.

[0079] l represents the thickness of the grid bar, in mm;

[0080] d r Indicates the net spacing between the grid bars, in mm;

[0081] λ represents the frictional resistance coefficient, a coefficient related to the Reynolds number;

[0082] ξ0 represents the local head loss coefficient, which is related to the percentage of flow through the grid, f.

[0083] ρ represents the fluid density, with units of kg / m³. 3 v represents the flow velocity in front of the grille, in m / s;

[0084] g represents the acceleration due to gravity, and its unit is m / s². 2 .

[0085] This invention provides a testing device and method for a cleaning machine based on dynamic water flow simulation. Through a highly integrated testing system, it simulates the operating conditions of a cleaning machine under real water flow conditions and achieves automated multi-parameter acquisition and efficient analysis. It relies not only on the improved testing effect of individual mechanisms and systems but also on the deep collaboration and linkage between various mechanisms. Specifically, a dynamic water flow generation mechanism is set up to obtain the dynamic water flow conditions under the testing state of the cleaning machine, simulating the actual working conditions of the cleaning machine. A blockage material weighing mechanism is set up to replace manual addition of blockage material, avoiding uneven distribution and large weight errors that could affect the reliability of the test data. A multi-parameter acquisition system is set up to collect and calculate various parameters during the operation of the cleaning machine, enabling effective testing of the cleaning capacity during normal operation and under extreme operating conditions. This achieves performance verification of the cleaning machine under real operating conditions and overcomes the shortcomings of traditional testing methods.

[0086] Specifically, a dynamic water flow generation mechanism is set up. Through the coordinated action of circulating water pumps, flow stabilization structures and flow channels, the actual usage conditions such as river flow velocity and turbulence intensity are accurately simulated. This allows the cleaning machine to withstand the same water flow impact and resistance as in actual working conditions during the test. Compared with traditional dry testing, this reduces the test error of the cleaning machine's interception efficiency under dynamic water flow conditions and improves the authenticity of the testing environment and the reliability of the test data.

[0087] The linkage control between the blockage feeding weighing mechanism and the multi-parameter acquisition system greatly shortens the single test cycle time and enables rapid fault diagnosis. When the cleaning machine is malfunctioning, the multi-parameter acquisition system triggers an alarm in real time and records the water flow, feeding and mechanical status data at the time of the fault, thus shortening the fault troubleshooting time.

[0088] By integrating parameters such as water flow rate, liquid level difference, and cleaning weight, key performance indicators such as cleaning capacity are constructed to quantify the amount of cleaning machine processed per unit time; cleaning efficiency reflects the interception effect and energy consumption ratio; blockage rate-water level difference evaluates the response characteristics of the cleaning machine to water level fluctuations; and extreme recovery time is the time it takes for the equipment to return to normal operation under overload conditions, thus achieving a comprehensive test and evaluation of the cleaning machine.

[0089] This device is used to conduct extreme working condition tests on the cleaning machine. By simulating harsh scenarios (such as a surge in garbage after a rainstorm), the anti-clogging ability of the cleaning machine is verified, and the design defects exposed in the test are examined. This provides direction and data support for further improvement and optimization of the cleaning machine, and reduces the failure rate of the cleaning machine.

[0090] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A test method for a screen cleaning machine testing device based on dynamic water flow simulation, characterized in that, The cleaning machine testing device based on dynamic water flow simulation includes a flow channel, within which a first flow stabilizing structure and a second flow stabilizing structure are provided. An installation platform is located within the flow channel between the first and second flow stabilizing structures. A cleaning machine is mounted on the installation platform, and liquid level measuring units are located in the flow channels on both sides of the cleaning machine. A blockage removal weighing mechanism is located on the installation platform near the cleaning machine. A blockage input weighing mechanism is located at the top of the flow channel. A pipe is located on the side of the flow channel connecting the two ends of the flow channel, and a circulating water pump and a flow meter are installed on the pipe. When the cleaning machine is tested under normal operating conditions, it includes: Set the cleaning machine to be tested on the installation platform, put the blockage into the weighing mechanism installed at the top of the flow channel, and fill the flow channel with water to the set liquid level. Start the circulating water pump and stabilize the water flow through the first and second flow stabilizing mechanisms; The blockage is introduced into the flow channel through a blockage input weighing mechanism, and the weight parameters of the blockage are recorded. When the cleaning machine is started, the blockage removal weighing mechanism weighs the blockage removed by the cleaning machine to obtain the blockage removal weight parameter. The liquid level measurement unit collects the liquid level difference information on both sides of the cleaning machine in real time, and the flow meter collects the water flow information in the pipeline in real time. Record the time it takes for the cleaning machine to remove the blockages that were previously placed in the flow channel; The cleaning capacity parameters of the cleaning machine are calculated by the weight parameters of the blockage removed and the cleaning time, and the cleaning efficiency parameters are calculated by the weight parameters of the blockage input and the weight parameters of the blockage removed.

2. The test method for a screen cleaning machine test device based on dynamic water flow simulation as described in claim 1, characterized in that, Both ends of the first flow stabilizing structure are in contact with the inner wall of the flow channel, and both ends of the second flow stabilizing structure are in contact with the inner wall of the flow channel.

3. The test method for a cleaning machine test device based on dynamic water flow simulation as described in claim 2, characterized in that, The first flow stabilizing structure and the second flow stabilizing structure are configured as rectangular plate structures. The width of the first flow stabilizing structure is the same as the width of the inner wall of the flow channel, and the width of the second flow stabilizing structure is the same as the width of the inner wall of the flow channel.

4. The test method for a cleaning machine test device based on dynamic water flow simulation as described in claim 2, characterized in that, The height of the first flow stabilizing structure is less than the height of the inner wall of the flow channel, and the height of the second flow stabilizing structure is less than the height of the inner wall of the flow channel.

5. The test method for a screen cleaning machine test device based on dynamic water flow simulation as described in claim 2, characterized in that, Both the first and second flow stabilizing structures are composed of cooling tower packing.

6. The test method for a screen cleaning machine test device based on dynamic water flow simulation as described in claim 2, characterized in that, The pipe is provided with an inlet and an outlet at both ends. The inlet is located in a first cavity formed by the first flow stabilizing structure and the inner wall of one end of the flow channel, and the outlet is located in a second cavity formed by the second flow stabilizing structure and the inner wall of the other end of the flow channel.

7. The testing method for a screen cleaning machine testing device based on dynamic water flow simulation as described in claim 1, characterized in that, The blockage-feeding weighing mechanism is equipped with a drive motor and a container. The two ends of the container are rotatably mounted on the inner walls of the flow channel. The drive motor is located on the side wall of the flow channel, and the output end of the drive motor is connected to a rotating shaft, which is connected to one end of the container.

8. The test method for a cleaning machine test device based on dynamic water flow simulation as described in claim 1, characterized in that, The circulating water pump is controlled by frequency converter.

9. The test method for a screen cleaning machine test device based on dynamic water flow simulation as described in claim 1, characterized in that, When the cleaning machine is tested under extreme operating conditions, including: Set the cleaning machine to be tested on the installation platform, put the blockage into the weighing mechanism installed at the top of the flow channel, and fill the flow channel with water to the set liquid level. When the cleaning machine is not working, the blockage is added to the flow channel through the blockage input weighing mechanism. The liquid level measurement unit collects the liquid level difference information parameters on both sides of the cleaning machine in real time up to the start water level and calculates and records the blockage rate. Continue to add blockage material, and collect the liquid level difference information parameters on both sides of the cleaning machine in real time through the liquid level measurement unit until the alarm water level is reached. Calculate and record the blockage rate, and start the cleaning machine to clear the blockage material.

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