Anti-clogging engineering drainage pump and drainage system based on multi-stage filtration

Abstract

The invention relates to the technical field of engineering drainage, in particular to an anti-blocking engineering drainage pump and drainage system based on multi-stage filtration, which comprises a base, supporting legs are welded and connected to the bottom edge of the lower part of the base, and an electric box bracket is embedded in the upper part of the right half edge of the base. The multi-stage filtration system composed of the primary coarse filtration tank, the secondary medium filtration tank and the tertiary fine filtration tank is adopted, impurities with different particle sizes can be comprehensively and effectively removed, the blocking risk is reduced, and the service life is prolonged. The filtering and buffering net cover is arranged, water flow can be further filtered and buffered, abrasion of parts is reduced, and working efficiency is improved. A backwashing system is arranged, so that the filtering performance can be recovered in time when the filtering device is blocked, and the manual cleaning workload is reduced. The supporting legs below the base provide stable supporting, and vibration damage of equipment is reduced. Flow, liquid level and flow velocity instruments are installed on a front plate of the electric cabinet, related data can be monitored in real time, operators can find abnormities in time conveniently, and safe and stable operation of the drainage system is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of engineering drainage, and in particular to an anti-clogging engineering drainage pump and a drainage system based on multi-stage filtration. Background Art

[0002] In many fields such as engineering construction, mining, and urban drainage, drainage operations are a vital part of work. As a key device for achieving drainage functions, the performance of drainage pumps directly affects the progress and safety of the project. With the development of technology, drainage pumps are being used more and more widely, but the existing drainage pump technology still exposes many deficiencies in actual use.

[0003] At present, most drainage pumps use single-stage filtration devices. This filtration method can only filter impurities within a specific particle size range, and it is difficult to deal with a variety of impurities in a complex water quality environment. For example, in the drainage scene of a construction site, large particles of gravel and wood chips, as well as fine silt and suspended matter may coexist in the water. Single-stage filtration devices can often only filter out larger impurities, while fine silt and suspended matter can easily pass through the filtration device into the pump body. After long-term accumulation, it will cause increased wear inside the pump body and reduce the service life of the drainage pump.

[0004] Since there is no graded filtration mechanism, larger impurities and smaller impurities impact the filter device at the same time, causing the filter device to be blocked quickly. Once the filter device is blocked, the water flow resistance increases, the drainage efficiency is significantly reduced, and it may even cause the drainage pump to fail to work properly. At this time, the filter device needs to be cleaned frequently manually, which not only increases maintenance costs and workload, but also affects the continuity of drainage operations.

[0005] When existing drainage pumps process sewage containing impurities, the impeller, flow channel and other parts inside the pump body are easily blocked by impurities. When larger impurities enter the pump body, they may get stuck between the impeller and the pump casing, causing the impeller to be unable to rotate normally, thereby causing the drainage pump to lose its drainage capacity. For example, during the drainage process of mines, the water may be mixed with ore fragments. Once these fragments enter the pump body, they can easily cause blockage.

[0006] Most of the current drainage pumps lack the real-time monitoring and early warning functions for blockage. When the pump body is blocked, it is often difficult for operators to detect it in time. By the time they find that the drainage is abnormal, the pump body may have been seriously damaged. Moreover, once the pump body is blocked, it is usually necessary to shut down and disassemble the pump body for cleaning, which takes a long time to repair and affects the progress of the project.

[0007] The support structure design of some drainage pumps is unreasonable, which is prone to vibration and displacement during operation. Especially in some large-scale drainage engineering scenarios, drainage pumps need to work continuously for a long time. Unstable support structures will cause increased wear of equipment parts and reduce the reliability and service life of the equipment.

[0008] The structural design of existing drainage pumps makes it difficult to disassemble and replace some key components. When a component fails, maintenance personnel need to spend a lot of time and energy to disassemble and install it, increasing maintenance costs and downtime. At the same time, due to the lack of effective self-cleaning or backwashing functions, the cleaning of the filter device is cumbersome, further affecting the maintainability of the equipment.

[0009] Most drainage pumps are only equipped with simple flow monitoring devices, which can only provide limited operating information. There is a lack of real-time monitoring of other important parameters such as liquid level and water flow rate, which cannot fully reflect the operating status of the drainage pump. For example, in some underground drainage projects, the change of liquid level is crucial to determine whether the drainage is normal, but existing drainage pumps often cannot provide accurate liquid level information in a timely manner.

[0010] Even though some drainage pumps are equipped with a variety of monitoring instruments, there is a lack of effective analysis and feedback mechanism for monitoring data. Operators are unable to adjust the operating parameters of the drainage pump in time according to the monitoring data to adapt to different working environments and water quality conditions, resulting in the drainage pump's working efficiency not being able to reach the optimal state. Therefore, we propose an anti-clogging engineering drainage pump and drainage system based on multi-stage filtration. Summary of the invention

[0011] The purpose of the present invention is to address the problems raised by the existing background technology. In order to achieve the above invention purpose, the present invention provides the following technical solutions: an anti-clogging engineering drainage pump based on multi-stage filtration, comprising a base, a supporting foot is welded to the bottom edge below the base, an electric box bracket is embedded on the upper right half of the base, a drainage pump electric control box is installed above the electric box bracket, a pump body electric control switch is electrically installed on the power supply board inside the drainage pump electric control box, and a flow meter, a liquid level meter, and a flow rate meter are electrically installed on the front panel of the drainage pump electric control box in sequence.

[0012] As a preferred technical solution of the present invention, a water inlet pipe is fixed on the right half of the base, the tail end of the water inlet pipe is connected to an anti-clogging water pump, and a water supply pipeline is embedded in the pipe mouth of the anti-clogging water pump.

[0013] As a preferred technical solution of the present invention, a fixing frame is embedded above the base, and a primary coarse filter tank, a secondary medium filter tank, and a final tertiary fine filter tank are sequentially placed on the outer surface of the fixing frame.

[0014] As a preferred technical solution of the present invention, the primary coarse filter tank, the secondary medium filter tank, and the tertiary fine filter tank are all interconnected with the water supply pipeline.

[0015] As a preferred technical solution of the present invention, the other end of the water supply pipeline is connected to a warning elbow connecting pipe, the other two sides of the warning elbow connecting pipe are embedded in the filter buffer mesh cover, and a pipeline connecting pipe is inserted into the top pipe opening of the filter buffer mesh cover.

[0016] As a preferred technical solution of the present invention, the other end of the pipeline connecting pipe is connected to an anti-clogging drainage pump, and the anti-clogging drainage pump is located above the base, and a drainage pipe is provided on one side of the bottom of the anti-clogging drainage pump.

[0017] As a preferred technical solution of the present invention, a backwash filter tank and a backwash tank are respectively installed on the inner side of the electrical box bracket, and the anti-clogging drainage pump is also located in the electrical box bracket, and the backwash filter tank and the backwash tank are connected by a pipeline.

[0018] As a preferred technical solution of the present invention, a pipeline on one side of the backwash filter tank is connected to a sewage discharge pipe, and a backwash liquid inlet pipe is embedded on the left side of the backwash tank.

[0019] An anti-clogging engineering drainage system based on multi-stage filtration includes the following system steps: Step 1. Start-up preparation: Make sure the power supply in the drainage pump electric control box is normal, check whether the pump body electric control switch is in the off state, and check whether the flow meter, liquid level meter and flow rate meter can display normally; Step 2. Pumping water in: Turn on the electric control switch of the pump body, the anti-clogging pump starts to work, pumps water in through the water inlet pipe, and the water enters the water delivery pipeline; Step 3. Multi-stage filtration Primary coarse filtration: Water flows through the water pipeline into the primary coarse filtration tank, where it undergoes preliminary filtration to remove larger impurities; Secondary medium filtration: The water that has passed the primary coarse filtration continues to flow into the secondary medium filtration tank through the water pipeline to further filter out medium-sized impurities; Third-stage fine filtration: The water that has completed the second-stage medium filtration enters the third-stage fine filtration tank through the water pipeline for fine filtration to remove smaller impurities; Step 4. Buffering transition: The water after multi-stage filtration flows into the alarm elbow connecting pipe through the water delivery pipeline, and then enters the filter buffer mesh cover for buffering, making the water flow more stable; Step 5. Drain output: The buffered water enters the anti-clogging drainage pump through the pipe connection pipe, and the anti-clogging drainage pump discharges the water out of the system through the drainage pipe; Step 6. Backwashing operation: When the filtration system needs to be backwashed, backwashing liquid is injected into the backwashing tank through the backwashing liquid inlet pipe. The backwashing liquid enters the backwashing filter tank through the pipeline to reversely flush the filtration system. The impurities generated by the flushing are discharged through the magazine drain pipe.

[0020] As a preferred technical solution of the present invention, the following system steps are included: the cross-sectional continuity flow formula at different positions of the water pipeline is: ; Where: Q represents the flow rate ; and are the cross-sectional areas of different sections of the pipeline ; and are the flow velocities of the fluid at the corresponding cross section m / s; The relationship between the head H and pressure P of the anti-clogging water pump and the anti-clogging drainage pump is: P=ρgH; Where: H is the head of the pump (mmm); g is the acceleration of gravity, g = 9.8m / ; ρ represents the density of the liquid.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the drainage pump of the present invention adopts a multi-stage filtration system consisting of a primary coarse filter tank, a secondary medium filter tank and a tertiary fine filter tank. The primary coarse filter tank can intercept large particles of impurities such as branches, leaves, and plastic fragments to prevent them from entering subsequent equipment and causing serious blockages. The secondary medium filter tank further filters medium-sized impurities such as sand and pebbles to reduce the burden of subsequent fine filtration. The tertiary fine filter tank finely filters tiny silt and suspended matter to ensure that the water quality entering the drainage pump is relatively clean. Through this step-by-step filtration method, impurities of different particle sizes can be comprehensively and effectively removed, greatly reducing the risk of blockage in the drainage pump and extending the service life of the drainage pump.

[0022] The present invention sets a filtering buffer screen before the water flows into the anti-clogging drainage pump. It can not only further filter tiny impurities, but also play a role in buffering the water flow. The stable water flow can reduce the impact on the internal components of the drainage pump and reduce the wear of the components. It also helps to improve the working efficiency of the drainage pump and reduce the blockage that may be caused by unstable water flow.

[0023] The present invention is equipped with a backwashing system consisting of a backwashing filter tank and a backwashing tank. When the filter device is blocked by impurities and the drainage efficiency is affected, the backwashing program can be started. The backwashing liquid enters the backwashing tank through the backwashing liquid inlet pipe, and after preliminary filtration by the backwashing filter tank, the filter tanks and filter buffer screens of various levels are backwashed to discharge the accumulated impurities through the magazine sewage pipe. This backwashing function can restore the filtering performance of the filter device in time, ensure the continuous and stable operation of the drainage system, and reduce the frequency and workload of manual cleaning of the filter device.

[0024] The support feet welded under the base of the present invention provide a stable support for the entire drainage pump device, ensuring that the device remains stable during operation. The stable support structure can reduce the displacement and damage of the device caused by vibration, ensure the normal operation of the drainage pump, and also help to extend the service life of the device.

[0025] A flow meter, a liquid level meter and a flow velocity meter are installed on the front panel of the electric control box of the drainage pump of the present invention. The flow meter can monitor the flow of drainage in real time, so that the operator can understand the speed and efficiency of drainage; the liquid level meter can monitor the liquid level height of the drainage area, so as to adjust the operation status of the drainage pump in time according to the liquid level; the flow velocity meter can monitor the water flow speed and judge whether the water flow is smooth. The real-time data provided by these instruments helps the operator to timely discover abnormal conditions in the operation of the equipment. For example, a sudden drop in flow may indicate that the filter device is blocked, so that corresponding measures can be taken to ensure the safe and stable operation of the drainage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure provided by the present invention; Figure 2 A schematic diagram of the structure of the anti-clogging drainage pump provided by the present invention; Figure 3 A schematic diagram of the structure of the electric control box for the drainage pump provided by the present invention; Figure 4 This is a schematic diagram of the structure of the backwash filter tank provided by the present invention.

[0027] Indicated in the figure: 1. Base; 2. Support feet; 3. Electric box bracket; 4. Drain pump electric control box; 5. Pump body electric control switch; 6. Flow meter; 7. Liquid level meter; 8. Flow rate meter; 9. Water inlet pipe; 10. Anti-clogging water pump; 11. Water supply pipeline; 12. Fixed bracket; 13. Primary coarse filter tank; 14. Secondary medium filter tank; 15. Tertiary fine filter tank; 16. Alarm elbow connecting pipe; 17. Filter buffer mesh cover; 18. Pipeline connecting pipe; 19. Anti-clogging drainage pump; 20. Drain pipe; 21. Backwash filter tank; 22. Magazine sewage pipe; 23. Backwash tank; 24. Backwash liquid inlet pipe. DETAILED DESCRIPTION

[0028] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0029] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features and technical solutions in the embodiments can be combined with each other without conflict. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] Example 1: Please refer to Figure 1-Figure 4 , an anti-clogging engineering drainage pump based on multi-stage filtration, including a base 1, a support foot 2 welded to the bottom edge below the base 1, an electric box bracket 3 embedded above the right half of the base 1, a drainage pump electric control box 4 installed above the electric box bracket 3, a pump body electric control switch 5 electrically installed on the power supply board inside the drainage pump electric control box 4, and a flow meter 6 and a liquid level meter 7, as well as a flow rate meter 8 are electrically installed on the front panel of the drainage pump electric control box 4 in sequence. A water inlet pipe 9 is fixed on the right half of the base 1, and an anti-clogging water pump 10 is connected to the tail end of the water inlet pipe 9, and a water delivery pipe 11 is embedded in the pipe mouth of the anti-clogging water pump 10.

[0031] A fixing frame 12 is embedded above the base 1, and a primary coarse filter tank 13, a secondary medium filter tank 14, and a final tertiary fine filter tank 15 are sequentially placed on the outer surface of the fixing frame 12. The primary coarse filter tank 13, the secondary medium filter tank 14, and the tertiary fine filter tank 15 are all interconnected with the water delivery pipeline 11. The other end of the water delivery pipeline 11 is connected to a variable alarm elbow connecting pipe 16, and the other two sides of the variable alarm elbow connection are embedded in the filter buffer screen cover 17, and a pipeline connecting pipe 18 is inserted into the top pipe opening of the filter buffer screen cover 17.

[0032] The other end of the pipe connecting pipe 18 is connected to the anti-clogging drain pump 19, and the anti-clogging drain pump 19 is located above the base 1, and a drain pipe 20 is provided on one side of the bottom of the anti-clogging drain pump 19. A backwash filter tank 21 and a backwash tank 23 are respectively installed on the inner side of the electric box bracket 3, and the anti-clogging drain pump 19 is also located in the electric box bracket 3, and the backwash filter tank 21 and the backwash tank 23 are connected by a pipe. A magazine drain pipe 22 is connected to one side of the backwash filter tank 21, and a backwash liquid inlet pipe 24 is embedded on the left side of the backwash tank 23. The drainage pump system is mainly used to realize the drainage function, and at the same time, a multi-stage filtering device is used to prevent the pump body from being blocked, and a backwash system is equipped to clean the filtering device to maintain the normal operation of the system.

[0033] Working principle of the anti-clogging engineering drainage pump based on multi-stage filtration: When the drainage operation needs to be started, the operator can turn on the entire system through the pump body electric control switch 5 in the drainage pump electric control box 4. At this time, the flow meter 6, the liquid level meter 7 and the flow velocity meter 8 start working. The flow meter 6 is used to monitor the water flow rate in the drainage process in real time, the liquid level meter 7 can monitor the liquid level height of the drainage area, and the flow velocity meter 8 monitors the speed of the water flow. These data help the operator to understand the operating status of the drainage system.

[0034] Pumping stage: After the drainage system is started, the anti-clogging pump 10 starts to work. Water is sucked from the water inlet pipe 9, which is connected to the anti-clogging pump 10 to ensure that water can enter the system smoothly. The anti-clogging pump 10 transports the water to the subsequent filtering device through the water pipe 11.

[0035] Multi-stage filtration stage: Primary coarse filter tank 13: Water first enters the primary coarse filter tank 13, which is mainly used to filter larger impurities in the water, such as branches, leaves, plastic bottles and other large objects. Through primary coarse filtration, most of the large particle impurities that may cause subsequent filtration devices and pumps to be blocked can be removed, reducing the burden of subsequent filtration.

[0036] Secondary medium filter tank 14: The water after primary coarse filtration then flows into the secondary medium filter tank 14. The secondary medium filter tank 14 further filters medium-sized impurities in the water, such as sand, pebbles, etc. Through this level of filtration, the water quality can be further improved and the wear on the subsequent fine filtration device can be reduced.

[0037] Third-stage fine filter tank 15: Finally, the water enters the third-stage fine filter tank 15. The third-stage fine filter tank 15 finely filters the tiny impurities in the water, such as fine silt, suspended matter, etc. After the third-stage fine filtration, the impurity content in the water is greatly reduced, which basically meets the working requirements of the drainage pump and effectively prevents the clogging of the anti-clogging drainage pump 19.

[0038] Buffering and drainage stage: The water after multi-stage filtration enters the alarm elbow connection pipe 16 through the water delivery pipe 11, and then flows into the filter buffer screen 17. The filter buffer screen 17 plays a role in further buffering the water flow and filtering tiny impurities, ensuring that the water entering the anti-clogging drainage pump 19 is cleaner. The water enters the anti-clogging drainage pump 19 from the filter buffer screen 17 through the pipeline connection pipe 18, and the anti-clogging drainage pump 19 discharges the water from the system through the drainage pipe 20 to complete the drainage operation.

[0039] Backwashing stage: As the filtering process proceeds, the primary coarse filter tank 13, the secondary medium filter tank 14, the tertiary fine filter tank 15 and the filter buffer screen 17 and other filtering devices will gradually accumulate impurities, affecting the filtering effect and water flow rate. At this time, it is necessary to start the backwashing system for cleaning.

[0040] The backwashing liquid inlet pipe 24 introduces the backwashing liquid into the backwashing tank 23. After the backwashing liquid is initially filtered by the backwashing filter tank 21, it is transported to each filter device (primary coarse filter tank 13, secondary medium filter tank 14, tertiary fine filter tank 15 and filter buffer screen 17) through a pipeline for backwashing. During the backwashing process, the water flow direction is opposite to the normal filtering direction, and the impurities in the filter device are washed out. The impurities are discharged from the system through the magazine drain pipe 22, thereby restoring the filtering performance of the filter device and ensuring the continuous and stable operation of the drainage system.

[0041] In summary, the anti-clogging engineering drainage pump based on multi-stage filtration effectively prevents pump blockage through multi-stage filtration and backwashing system, thereby improving drainage efficiency and system reliability.

[0042] Embodiment 2: An anti-clogging engineering drainage system based on multi-stage filtration, comprising the following system steps: Step 1. Start-up preparation: Ensure that the power supply in the drainage pump electric control box 4 is normal, check that the pump body electric control switch 5 is in the off state, and check whether the flow meter 6, liquid level meter 7 and flow rate meter 8 can display normally; Step 2. Pumping water in: Turn on the pump body electric control switch 5, the anti-clogging pump 10 starts to work, pumps water in through the water inlet pipe 9, and the water enters the water delivery pipe 11; Step 3. Multi-stage filtration Primary coarse filtration: water flows through the water delivery pipe 11 into the primary coarse filtration tank 13, where it is initially filtered to remove larger impurities; Secondary medium filtration: The water after primary coarse filtration continues to flow into the secondary medium filter tank 14 through the water pipeline 11 to further filter out medium-sized impurities; Third-stage fine filtration: The water that has completed the second-stage medium filtration enters the third-stage fine filtration tank 15 through the water pipeline 11 for fine filtration to remove smaller impurities; Step 4. Buffering transition: The water after multi-stage filtration flows into the alarm elbow connecting pipe 16 through the water delivery pipe 11, and then enters the filter buffer mesh cover 17 for buffering, making the water flow more stable; Step 5. Drainage output: The buffered water enters the anti-clogging drainage pump 19 through the pipeline connecting pipe 18, and the anti-clogging drainage pump 19 discharges the water from the system through the drainage pipe 20; Step 6. Backwashing operation is optional: when the filtration system needs to be backwashed, backwashing liquid is injected into the backwashing tank 23 through the backwashing liquid inlet pipe 24, and the backwashing liquid enters the backwashing filter tank 21 through the pipeline to reversely flush the filtration system. The impurities generated by the flushing are discharged through the magazine drain pipe 22.

[0043] The cross-sectional continuous flow formula at different positions of the water pipeline 11 is: ; Where: Q represents the flow rate ; and are the cross-sectional areas of different sections of the pipeline ; and are the flow velocities of the fluid at the corresponding cross sections in m / s; The relationship between the head H and the pressure P of the anti-clogging water pump 10 and the anti-clogging drainage pump 19 is: P=ρgH; Where: H is the head of the pump mm; g is the acceleration of gravity, g = 9.8m / ; ρ represents the density of the liquid.

[0044] Workflow steps of anti-clogging engineering drainage pump system based on multi-stage filtration: Preparation before starting: Step 1. Check device integrity Check whether the base 1 and the supporting feet 2 below it are stable, and ensure that the entire drainage pump device is placed stably without looseness or damage.

[0045] Check whether the components such as the electric box bracket 3 and the fixing bracket 12 are firmly installed and whether the connection with the base 1 is tight.

[0046] Step 2. Check the electrical connections Confirm that the pump body electric control switch 5 on the power supply board inside the drainage pump electric control box 4 is in the off state.

[0047] Check whether the electrical connection between the flow meter 6, liquid level meter 7 and flow rate meter 8 and the drainage pump electric control box 4 is normal and there is no looseness, short circuit, etc.

[0048] Step 3. Check the pipe connections Check whether the connections of the water inlet pipe 9, water delivery pipe 11, alarm elbow connecting pipe 16, pipe connecting pipe 18, drain pipe 20 and other pipes are tight and leak-free.

[0049] Confirm whether the backwash filter tank 21, the backwash tank 23 and the related connecting pipes are connected correctly, and whether the magazine sewage pipe 22 and the backwash liquid inlet pipe 24 are unobstructed.

[0050] Normal drainage workflow: Step 1. Start the device Open the drainage pump electric control box 4, and turn the pump body electric control switch 5 to the on position. At this time, the anti-clogging water pump 10 and the anti-clogging drainage pump 19 start to be powered on and run.

[0051] The flow meter 6, the liquid level meter 7 and the flow velocity meter 8 start to work, and monitor the water flow rate, the liquid level height and the water flow velocity in the drainage process in real time.

[0052] Step 2. Pumping The anti-clogging water pump 10 starts to work and sucks water from the water inlet pipe 9. The water inlet pipe 9 can be directly connected to the area that needs to be drained, such as a sump, a sewage pool, etc.

[0053] The sucked water enters the water delivery pipe 11 through the anti-clogging water pump 10 and begins to be delivered to the subsequent filtering device.

[0054] Step 3. Multi-stage filtration Primary coarse filtration: Water first flows into the primary coarse filtration tank 13, which filters larger impurities in the water, such as branches, leaves, plastic fragments, etc., to prevent these large particles from entering subsequent equipment and causing blockage.

[0055] Secondary medium filtration: The water after primary coarse filtration continues to flow into the secondary medium filter tank 14 through the water pipe 11, and the secondary medium filter tank 14 further filters medium-sized impurities in the water, such as sand, pebbles, etc.

[0056] Third-stage fine filtration: The water then enters the third-stage fine filtration tank 15, which finely filters tiny impurities in the water, such as fine silt, suspended matter, etc., to further purify the water quality.

[0057] Step 4. Buffering and Drainage The water after multi-stage filtration flows into the alarm elbow connecting pipe 16 through the water delivery pipe 11, and then enters the filter buffer screen 17. The filter buffer screen 17 plays the role of buffering the water flow and further filtering tiny impurities.

[0058] Water enters the anti-clogging drainage pump 19 from the filter buffer screen 17 through the pipeline connecting pipe 18, and the anti-clogging drainage pump 19 discharges the treated water to a designated area through the drainage pipe 20.

[0059] Backwashing workflow: Step 1. Trigger condition determination According to the monitoring data of the flow meter 6, the liquid level meter 7 and the flow rate meter 8, when the flow rate drops significantly, the liquid level rises abnormally or the flow rate slows down, it may mean that the filter device is blocked by impurities and a backwash operation is required.

[0060] The backwash process can also be started regularly at preset time intervals to ensure the normal operation of the filter device.

[0061] Step 2. Backwash start The anti-clogging water pump 10 and the anti-clogging drainage pump 19 are turned off to stop the normal drainage work.

[0062] The backwashing procedure is started through the drain pump electric control box 4.

[0063] Step 3. Introduce backwash fluid The backwash liquid enters the backwash tank 23 through the backwash liquid inlet pipe 24. The backwash liquid can be clean water or a special cleaning solution, which is selected according to actual conditions.

[0064] Step 4. Backwash filter tank for initial filtration The backwashing liquid flows from the backwashing tank 23 into the backwashing filter tank 21 , and the backwashing filter tank 21 performs preliminary filtration on the backwashing liquid to remove impurities that may be contained therein, thereby preventing secondary contamination of the filter device during the backwashing process.

[0065] Step 5. Backwashing operation The backwash liquid after preliminary filtration is transported through pipelines to filter devices such as primary coarse filter tank 13, secondary medium filter tank 14, tertiary fine filter tank 15 and filter buffer screen 17. The flow direction of the backwash liquid is opposite to that of normal filtration, and the impurities accumulated in the filter device are washed out.

[0066] Step 6. Impurity removal The impurities flushed out are discharged from the system along with the backwashing liquid through the magazine drain pipe 22, completing the backwashing process.

[0067] Stop a workflow: Step 1. Turn off the device When the drainage work is completed or the equipment needs to be stopped, the pump body electric control switch 5 in the drainage pump electric control box 4 is turned to the closed position, and the anti-clogging water pump 10 and the anti-clogging drainage pump 19 stop running.

[0068] Step 2. Follow-up inspection Check whether there are any abnormalities in the various parts of the equipment, such as water leakage, electric leakage, etc.

[0069] Record equipment operating time, flow, liquid level and other related data to provide reference for subsequent maintenance and overhaul.

[0070] Embodiment 3: An anti-clogging engineering drainage system based on multi-stage filtration, the pump body electric control switch 5 is turned on, the anti-clogging water pump 10 starts to work, and water is pumped in through the water inlet pipe 9, and the water enters the water delivery pipe 11; the water flows through the water delivery pipe 11 into the primary coarse filter tank 13, and is initially filtered in the primary coarse filter tank 13 to remove larger impurities; the water after the primary coarse filtration continues to flow through the water delivery pipe 11 into the secondary medium filter tank 14, and further filters out medium-sized impurities; The water that has completed the secondary filtration enters the third-level fine filter tank 15 through the water delivery pipe 11 for fine filtration to remove smaller impurities; the water that has undergone multi-stage filtration flows into the alarm elbow connecting pipe 16 through the water delivery pipe 11, and then enters the filter buffer mesh cover 17 for buffering to make the water flow more stable; the buffered water enters the anti-clogging drainage pump 19 through the pipeline connecting pipe 18, and the anti-clogging drainage pump 19 discharges the water from the system through the drainage pipe 20; Step 6. Backwashing operation is optional: when the filtration system needs to be backwashed, backwashing liquid is injected into the backwashing tank 23 through the backwashing liquid inlet pipe 24, and the backwashing liquid enters the backwashing filter tank 21 through the pipeline to reversely flush the filtration system. The impurities generated by the flushing are discharged through the magazine drain pipe 22.

[0071] The cross-sectional continuous flow formula at different positions of the water pipeline 11 is: ; Where: Q represents the flow ; and are the cross-sectional areas of different sections of the pipeline ; and are the flow rates of the fluid at the corresponding cross-sections m / s; the relationship between the head H and the pressure P of the anti-clogging water pump 10 and the anti-clogging drainage pump 19 is: P=ρgH; where: H is the head of the water pump mmm; g is the acceleration of gravity, g=9.8m / ; ρ represents the density of the liquid.

[0072] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. An anti-clogging engineering drainage pump based on multi-stage filtration, comprising a base (1), wherein a support foot (2) is welded to the bottom edge below the base (1), characterized in that: An electrical box bracket (3) is embedded on the upper right half of the base (1), a drainage pump electrical control box (4) is installed above the electrical box bracket (3), a pump body electrical control switch (5) is electrically installed on the power supply board inside the drainage pump electrical control box (4), and a flow meter (6), a liquid level meter (7), and a flow rate meter (8) are electrically installed in sequence on the front panel of the drainage pump electrical control box (4).

2. The anti-clogging engineering drainage pump based on multi-stage filtration according to claim 1 is characterized in that: A water inlet pipe (9) is fixed on the right half of the base (1), the tail end of the water inlet pipe (9) is connected to an anti-clogging water pump (10), and a water delivery pipe (11) is embedded in the pipe mouth of the anti-clogging water pump (10).

3. The anti-clogging engineering drainage pump based on multi-stage filtration according to claim 2 is characterized in that: A fixing frame (12) is inlaid above the base (1), and a primary coarse filter tank (13), a secondary medium filter tank (14), and a final tertiary fine filter tank (15) are sequentially placed on the outer surface of the fixing frame (12).

4. The anti-clogging engineering drainage pump based on multi-stage filtration according to claim 3 is characterized in that: The primary coarse filter tank (13), the secondary medium filter tank (14), and the tertiary fine filter tank (15) are all interconnected with the water delivery pipeline (11).

5. The anti-clogging engineering drainage pump based on multi-stage filtration according to claim 4 is characterized in that: The other end of the water delivery pipeline (11) is connected to an alarm elbow connecting pipe (16), and the other two sides of the alarm elbow connecting pipe are embedded in the filter buffer mesh cover (17), and a pipeline connecting pipe (18) is inserted into the top pipe opening of the filter buffer mesh cover (17).

6. The anti-clogging engineering drainage pump based on multi-stage filtration according to claim 5 is characterized in that: The other end of the pipeline connecting pipe (18) is connected to an anti-clogging drainage pump (19), and the anti-clogging drainage pump (19) is located above the base (1), and a drainage pipe (20) is provided on one side of the bottom of the anti-clogging drainage pump (19).

7. The anti-clogging engineering drainage pump based on multi-stage filtration according to claim 6 is characterized in that: A backwash filter tank (21) and a backwash tank (23) are respectively mounted on the inner side of the electrical box bracket (3), and the anti-clogging drainage pump (19) is also located in the electrical box bracket (3), and a pipeline is connected between the backwash filter tank (21) and the backwash tank (23).

8. The anti-clogging engineering drainage pump based on multi-stage filtration according to claim 7 is characterized in that: A pipeline on one side of the backwash filter tank (21) is connected to a sewage discharge pipe (22), while a backwash liquid inlet pipe (24) is embedded on the left side of the backwash tank (23). 9.An anti-clogging engineering drainage system based on multi-stage filtration, characterized in that: The system steps include: Step 1. Start-up preparation: Ensure that the power supply in the drainage pump electric control box (4) is normal, check that the pump body electric control switch (5) is in the off state, and check whether the flow meter (6), liquid level meter (7) and flow rate meter (8) can display normally; Step 2. Pumping water in: Turn on the pump body electric control switch (5), the anti-clogging pump (10) starts to work, pumps water in through the water inlet pipe (9), and the water enters the water delivery pipe (11); Step 3. Multi-stage filtration Primary coarse filtration: water flows through the water delivery pipe (11) into the primary coarse filtration tank (13), where it is initially filtered to remove larger impurities; Secondary medium filtration: The water that has passed the primary coarse filtration continues to flow into the secondary medium filtration tank (14) through the water delivery pipeline (11) to further filter out medium-sized impurities; Third-stage fine filtration: The water that has completed the second-stage intermediate filtration enters the third-stage fine filtration tank (15) through the water delivery pipeline (11) for fine filtration to remove smaller impurities; Step 4. Buffering transition: the water after multi-stage filtration flows into the alarm elbow connecting pipe (16) through the water delivery pipe (11), and then enters the filter buffer screen (17) for buffering, so that the water flow is more stable; Step 5. Drainage output: The buffered water enters the anti-clogging drainage pump (19) through the pipeline connecting pipe (18), and the anti-clogging drainage pump (19) discharges the water out of the system through the drainage pipe (20); Step 6. Backwashing operation: When the filter system needs to be backwashed, backwashing liquid is injected into the backwashing tank (23) through the backwashing liquid inlet pipe (24). The backwashing liquid enters the backwashing filter tank (21) through the pipeline to reversely flush the filter system. Impurities generated by the flushing are discharged through the impurity discharge pipe (22).

10. The anti-clogging engineering drainage system based on multi-stage filtration according to claim 9, characterized in that: The system comprises the following steps: The cross-sectional flow rate formula at different positions of the water pipeline (11) is: ; Where: Q represents the flow rate ; and are the cross-sectional areas of different sections of the pipeline ; and are the flow velocities of the fluid at the corresponding cross sections in m / s; The relationship between the head H and the pressure P of the anti-clogging water pump (10) and the anti-clogging drainage pump (19) is: P=ρgH; Where: H is the head of the pump (mmm); g is the acceleration of gravity, g = 9.8m / ; ρ represents the density of the liquid.

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