Open caisson water suction pumping device and pumping method thereof

Abstract

The invention belongs to the technical field of mine water supply, and particularly relates to an open caisson water suction pumping device and a pumping method thereof. A supporting column is fixed to the bottom of a water tank, a water suction pipe is connected to the right side of the water tank, and an impeller is fixed to a central framework of the water tank and right faces the water suction pipe; the bottom of the water tank is connected with a flushing pipe, the other end of the flushing pipe is connected with the water outlet end of the centrifugal water pump, the flushing pipe is provided with an electric flushing valve, the tail end of the water outlet end of the centrifugal water pump is connected with a water supply pipe, and the water supply pipe is connected with a first sedimentation pool. According to the device, logic programming and intelligent control are achieved, and automatic intelligent control over the flow and the pressure of the centrifugal water pump is achieved according to liquid level and concentration sensing.

Description

Technical Field

[0001] The invention belongs to the technical field of mine water supply, and in particular relates to a caisson water suction pumping device and a pumping method thereof. Background Art

[0002] Wet grinding and separation are important processes in the mineral processing process. Both processes require a large amount of industrial water. At present, industrial water is obtained by using underground deep well vacuum pump water, shore water pump station or pump room centrifugal water pump to suck water from the downstream of the river. Both underground deep well vacuum pump water and shore centrifugal water pump water suction have the problem of insufficient water suction at the centrifugal water pump suction end, causing accidents such as cavitation and turbulence of the centrifugal water pump. It is necessary to add an auxiliary vacuum pump to ensure the vacuum degree at the centrifugal water pump suction end to meet the water suction end to be full of water, but it still cannot meet the water needs of large industrial production; at the same time, if the vacuum degree is insufficient, the water suction is insufficient, and accidents such as blockage of the centrifugal water pump and pipeline, cavitation and turbulence will occur. Summary of the invention

[0003] The purpose of the present invention is to provide a caisson water suction pumping device and a pumping method thereof, so as to solve the problem that the existing underground deep well vacuum pump water and shore centrifugal water pump water suction require vacuum drawing at the water suction end to be fully sucked up with water, and even if the water suction end is fully sucked up with water, it still cannot meet the water needs of large-scale industrial production.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme: A caisson water suction pumping device comprises a filtering mechanism, a pumping mechanism, a sedimentation separation mechanism and a controller, wherein the filtering mechanism is placed in river water, a river water concentration detection sensor and a river water level detection sensor are arranged in the river water, the pumping mechanism is placed in the caisson, the filtering mechanism comprises a water tank, the pumping mechanism comprises a centrifugal water pump, the sedimentation separation mechanism comprises a first sedimentation water tank and a second sedimentation water tank, a water inlet hole is arranged on the box wall of the water tank, a frame is welded with channel steel inside the water tank, a screen is fixed outside the water tank by bolts and a pressure plate, a support column is fixed at the bottom of the water tank, a bottom plate is fixed at the bottom end of the support column, A suction pipe is connected to the right side of the water tank, an impeller is fixed on the central frame of the water tank, the impeller is facing the suction pipe, the other end of the suction pipe is connected to the water inlet end of the centrifugal water pump, a first coupler is connected between the suction pipe and the centrifugal water pump, the number of the suction pipes is consistent with the number of pipelines on the left side of the first coupler, the number of the centrifugal water pumps is consistent with the number of water pipes on the right side of the first coupler, an electric ball valve and an electric butterfly valve are arranged on the left side of the first coupler, and a manual butterfly valve and an electric butterfly valve are arranged on the right side, a flushing pipe is connected to the bottom of the water tank, the other end of the flushing pipe is connected to the water outlet end of the centrifugal water pump, an electric flushing valve is arranged on the flushing pipe, and the water outlet end of the centrifugal water pump is not connected to the water supply A water pipe, a water supply pipe is connected to the first sedimentation water tank, a check valve and a concentration detection sensor are arranged at the water inlet of the first sedimentation water tank, a liquid level detection sensor is arranged in the first sedimentation water tank, a sewage pipe is arranged at the bottom of the first sedimentation water tank, the water outlet of the first sedimentation water tank is connected to the second sedimentation water tank through an overflow pipe, a concentration detection sensor is arranged at the water inlet of the second sedimentation water tank, a liquid level detection sensor is arranged in the second sedimentation water tank, a sewage pipe is arranged at the bottom of the second sedimentation water tank, the second sedimentation water tank is connected to the first clear water tank through an overflow pipe, a liquid level detection sensor is arranged in the first clear water tank, a sewage pipe is arranged at the bottom of the first clear water tank, and a concentration sensor is arranged at the water outlet of the first clear water tank. The first clean water tank is connected to the second clean water tank through an overflow pipe, a liquid level detection sensor is arranged in the second clean water tank, a sewage pipe is arranged at the bottom of the second clean water tank, the center of the side wall of the second clean water tank is connected to the outlet pipe, a concentration detection sensor is arranged at the outlet pipe end of the second clean water tank, the variable frequency motors of the electric butterfly valve, the electric ball valve and the centrifugal water pump are all connected to the controller, the electric butterfly valve, the electric ball valve, the centrifugal water pump are interlocked with each concentration detection sensor and the liquid level detection sensor PLC to realize logic programming and intelligent control, and realize automatic intelligent control of the flow rate and pressure of the centrifugal water pump according to the liquid level and concentration perception.

[0005] Preferably, the impeller, flushing pipe, water suction pipe and centrifugal water pump are all in multiple groups.

[0006] Preferably, the water suction pipe is cast on the inner wall of the caisson.

[0007] Preferably, the nozzles are evenly spaced at the end of the flushing pipe.

[0008] Preferably, a check valve, a manual butterfly valve, an electric butterfly valve, a second connector and a third connector are connected in sequence between the water outlet of the centrifugal water pump and the water supply pipe, the check valve is connected to the controller, and the check valve is interlocked with each concentration detection sensor and liquid level detection sensor PLC to realize logic programming and intelligent control.

[0009] Preferably, the first connector has two pipelines on the left side and four pipelines on the right side, with a manual butterfly valve disposed in the middle.

[0010] Preferably, the second coupler is connected to the third coupler, the second coupler has four pipes on the left side and two pipes on the right side, a manual butterfly valve is arranged in the middle, the third coupler has two pipes on the left side and one pipe on the right side, two manual butterfly valves are arranged in the middle, the right side of the second coupler is connected to the left side of the third coupler, and the right side pipe of the third coupler is connected to the water supply pipe.

[0011] Preferably, the water supply angle of the water supply pipe is less than 90°.

[0012] Based on the above-mentioned pumping method of the caisson water suction pumping device, the specific steps are as follows: S1: The impeller rotates automatically through the strong suction of the centrifugal water pump, without the need for a motor drive. The river water enters the water tank through the impeller and the centrifugal water pump, is filtered through the screen, and is stirred by the impeller; S2: River water enters the suction pipe, water supply pipe, check valve, first sedimentation tank, second sedimentation tank, first clear water tank and second clear water tank in turn through the pumping action of impeller and centrifugal water pump, and industrial water is provided by the outlet pipe. As the pumping volume and pressure of the centrifugal water pump increase, water enters the first clear water tank and the second clear water tank from the top overflow pipe of the first sedimentation tank and the second sedimentation tank. The concentration detection sensor, liquid level detection sensor, electric ball valve, electric butterfly valve, centrifugal water pump, check valve and controller are interlocked to drive the automatic intelligent caisson water suction pumping production intelligent logic programming PLC control line of river water-filtration-stirring-water suction-pumping-sedimentation-overflow. The whole process of filtering, conveying, sedimentation, separation and overflowing river water is an automatic detection perception intelligent logic programming PLC control process; S3: Automatically and intelligently pump water according to the liquid levels of the first sedimentation tank and the second sedimentation tank: the liquid level detection sensor automatically detects, senses and intelligently controls the liquid levels of the first sedimentation tank and the second sedimentation tank, and sets the variable frequency motor operating parameters of the centrifugal water pump to be interlocked with the liquid level detection sensor PLC of the first sedimentation tank and the second sedimentation tank to realize logic programming and intelligent control; when the liquid level detection sensor automatically detects, senses and intelligently controls the liquid levels of the first sedimentation tank and the second sedimentation tank to be between the upper and lower parts of the overflow pipe, the existing operating frequency of the centrifugal water pump is maintained, and water is automatically pumped at a normal frequency; when the liquid level detection sensor automatically detects, senses and intelligently controls the liquid levels of the first sedimentation tank and the second sedimentation tank to be lower than the position below the overflow pipe, the frequency conversion of the centrifugal water pump is automatically increased. The motor frequency and running speed automatically increase the water supply (the speed is proportional to the water supply) until the liquid level of the first sedimentation tank and the second sedimentation tank gradually rises to the overflow pipe position; when the liquid level detection sensor automatically detects, senses and intelligently controls the first sedimentation tank and the second sedimentation tank to be higher than the overflow pipe position, the frequency and running speed of the centrifugal water pump variable frequency motor are automatically reduced to reduce the water supply until the liquid level of the first sedimentation tank and the second sedimentation tank gradually decreases to approach the overflow pipe position, and then resumes normal frequency operation; in addition, when the production water demand increases, the frequency and running speed of the variable frequency motors of 2 to 6 centrifugal water pumps are automatically increased through computer instructions to increase the water supply until the overflow water of the first sedimentation tank and the second sedimentation tank increases, further increasing the production water supply; S4: Automatically and intelligently pump water according to the liquid concentration in the first sedimentation tank and the second sedimentation tank: the concentration detection sensor automatically detects, senses and intelligently controls the liquid concentration in the first sedimentation tank and the second sedimentation tank, and sets the variable frequency motor operating parameters of the centrifugal water pump to interlock with the liquid concentration detection sensor PLC in the first sedimentation tank and the second sedimentation tank to realize logic programming and intelligent control; when the liquid concentration detection sensor in the first sedimentation tank and the second sedimentation tank automatically detects, senses and intelligently controls that the water concentration at the water inlet of the first sedimentation tank and the second sedimentation tank is less than 5%, stabilize the existing operating frequency of the centrifugal water pump and pump water at a normal frequency; when the concentration detection sensor automatically detects, senses and intelligently controls that the river water concentration at the water inlet of the first sedimentation tank and the second sedimentation tank is 5% <8%, an alarm signal is issued, and it is manually determined whether it is necessary to stop pumping water; when the concentration detection sensor detects that the river water concentration at the water inlet of the first sedimentation tank and the second sedimentation tank is >8%, the alarm signal is issued and the machine automatically stops 60 seconds later; S5: Automatic intelligent pumping according to the river water level: The river water level detection sensor automatically detects, senses and intelligently controls the high and low positions of the river water level, and sets the variable frequency motor operating parameters of the centrifugal water pump to interlock with the river water level detection sensor PLC to realize logic programming and intelligent control. When the river water level detection sensor automatically detects, senses and intelligently controls the river water level to be higher than the top of the water tank, the existing operating frequency of the centrifugal water pump is maintained and water is pumped at a normal frequency; when the river water level detection sensor automatically detects, senses and intelligently controls the river water level to be 100 to 300 mm lower than the top of the water tank, the variable frequency motor frequency and operating speed of the centrifugal water pump are automatically reduced to reduce the water supply until the river water level gradually rises to the top of the centrifugal water pump, and the upstream is notified to open the gate to release water; when the river water level detection sensor automatically detects, senses and intelligently controls the river water level to be 10 to 50 mm lower than the top of the suction pipe, the centrifugal water pump is automatically stopped, and the upstream is notified to open more gates to increase the amount of water released; S6: Automatically and intelligently pump water according to the river water concentration: The river water concentration detection sensor automatically detects, senses and intelligently controls the river water concentration near the water tank, and sets the variable frequency motor operating parameters of the centrifugal water pump to interlock with the river water concentration detection sensor PLC to achieve logic programming and intelligent control. When the river water concentration detection sensor automatically detects, senses and intelligently controls that the water concentration at the water inlet of the water tank is less than 5%, the existing operating frequency of the centrifugal water pump is stabilized and water is pumped at a normal frequency; when the river water concentration detection sensor automatically detects, senses and intelligently controls that the river water concentration at the water inlet is 5% less than 8%, an alarm signal is issued, and it is manually determined whether the pumping needs to be stopped; when the river water concentration detection sensor detects that the river water concentration at the water inlet of the water tank is greater than 8%, the alarm signal is issued and the machine automatically stops 60 seconds later; S7: When the river water concentration detection sensor automatically detects, senses and intelligently controls that the river water concentration at the water inlet of the water tank is greater than 5%, and the variable frequency motor of the electric flushing valve and the centrifugal water pump is interlocked with the river water concentration detection sensor PLC, logical programming and intelligent control are realized, and the electric flushing valve of the flushing pipe at the bottom of the water tank is automatically opened to realize automatic flushing of the nozzle at the head of the flushing pipe under high-pressure water; in addition, when the system is shut down for maintenance, the sludge under the water tank is regularly flushed to ensure that the area 5 to 10 meters below the water tank is clean and free of sludge.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) The water tank, impeller and centrifugal water pump in the river water form a spatial separation, and the centrifugal water pump uses the water suction power to automatically rotate and stir the water tank and the suction pipe, eliminating pipe blockage, cavitation and turbulence accidents, and avoiding equipment failures and hidden dangers such as large vibration of the centrifugal water pump, impeller breakage and flying out, pump casing cracking, and short spare parts life; at the same time, the centrifugal water pump can absorb water without vacuuming the suction end; (2) Optimize the water supply angle of the water supply pipe to less than 90°, reduce elbow wear, greatly reduce water supply resistance, avoid cavitation and turbulence accidents, effectively reduce pipeline leakage, improve pumping efficiency, achieve the goals of large flow, high efficiency and low energy consumption, reduce pumping costs, and extend the service life of centrifugal water pumps and main spare parts; (3) Through automatic detection by concentration detection sensors and liquid level detection sensors, combined with intelligent control of electric butterfly valves and electric ball valves, the pumping safety is improved, pipe wear is reduced, and the technical problems of "unstable pressure, low pumping efficiency, pipe blockage, high energy consumption, pump emptying, cavitation and turbulence and other unreliable operation" in the previous production process are solved. At the same time, the problem of the water suction end being full of water but still not being able to meet the water needs of large industrial production is avoided; (4) The variable frequency motors of the electric butterfly valve, electric ball valve, and centrifugal water pump are interlocked with the concentration detection sensors and liquid level detection sensors PLC to realize logic programming and intelligent control, and realize automatic intelligent control of the flow and pressure of the centrifugal water pump based on the liquid level and concentration perception; (5) The sewage pipes of the first sedimentation tank, the second sedimentation tank, the first clean water tank and the second clean water tank are used to facilitate regular flushing of the sludge; (6) Through PLC, the internal structures (integrated sensor + actuator + control system, etc.) of electric ball valves, electric butterfly valves, check valves, motors of centrifugal water pumps, etc. are intelligently controlled, and the electric structures, various valves, motors and other equipment are precisely controlled and intelligently managed on-site and remotely, and the operating status of the electric structures, various valves, motors and other equipment is monitored in real time; the operating parameters of the centrifugal water pump are automatically controlled based on the liquid level and concentration perception. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the present invention; Figure 2 Schematic diagram of the structure of the first connecting pipe in an embodiment of the present invention; Figure 3 Schematic diagram of the connection relationship between the second connecting pipe and the third connecting pipe in an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure between the water tank and the water supply pipe in an embodiment of the present invention.

[0015] Explanation of the reference numerals: 1. support column; 2. water tank; 3. impeller; 4. river water concentration detection sensor; 5. river water; 6. river water level detection sensor; 7. flushing pipe; 8. suction pipe; 9. river bank; 10. caisson; 11. first electric butterfly valve; 12. electric ball valve; 13. first connector; 14. first manual butterfly valve; 15. second electric butterfly valve; 16. centrifugal water pump; 17. electric flushing valve; 18. first check valve; 19. second manual butterfly valve; 20. third electric butterfly valve; 21. second connector; 22. third connector; 23. water supply pipe; 24. first sewage pipe; 25. second check valve; 26. first concentration detection sensor; 27. first sedimentation tank; 28. first liquid level detection sensor; 29. ​​first overflow pipe; 30. second concentration detection sensor; 31. second sedimentation tank water tank; 32, second liquid level detection sensor; 33, second overflow pipe; 34, third liquid level detection sensor; 35, first clean water tank; 36, third concentration detection sensor; 37, third overflow pipe; 38, fourth liquid level detection sensor; 39, second clean water tank; 40, outlet pipe; 41, fourth concentration detection sensor, 42, third manual butterfly valve; 43, fourth manual valve; 44, fifth manual valve; 45, sixth manual valve; 46, second sewage pipe; 47, third sewage pipe; 48, fourth sewage pipe. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is described clearly and completely below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1 As shown, a caisson water suction pumping device is designed according to the pipeline conditions, production water demand and pressure requirements of the existing river water suction pipe. A water tank 2 is set in the river water 5, and a caisson 10 is set on the river bank 9 150 to 200 meters away from the water tank. The inner diameter of the caisson is 20 to 30 meters, the depth is 20 to 26 meters, the elevation of the bottom of the caisson is 1109 meters, and the elevation of the top of the caisson is 1133 meters. The caisson is cast with reinforced cement concrete 450 with a thickness of 600 to 1000mm. A Φ20 to Φ30mm steel mesh is set inside and a waterproof material is applied outside to prevent a large amount of river water from seeping into the caisson. Combined with the caisson water absorption, water supply speed and water volume, the diameter of the water supply pipe is calculated to be Φ1100mm through an empirical formula, and a first sedimentation tank and a second sedimentation tank are set on the top of the mountain at the end of the water supply pipe.

[0018] like Figure 1As shown, a caisson water suction pumping device includes a filtering mechanism, a pumping mechanism and a sedimentation separation mechanism. The filtering mechanism is placed in river water 5. A river water concentration detection sensor 4 and a river water level detection sensor 6 are arranged in the river water 5 to detect the height of the river water level and the turbidity of the river water. The pumping mechanism is placed in a caisson 10. The filtering mechanism includes a water tank 2. The pumping mechanism includes a centrifugal water pump 16. The sedimentation separation mechanism includes a first sedimentation water tank 27 and a second sedimentation water tank 31. The water tank 2 is a rectangular parallelepiped, and the length, width and height are 12m, 4m and 5m respectively. The depth from the water surface is 10-20m. A water inlet hole is opened on the wall of the water tank 2. A frame is welded with 30#-40# channel steel in the water tank 2. The continuous welding and the welding height>12 mm, the screen is fixed on the outside of the water tank 2 by bolts and pressure plates. The screen is made of 304 stainless steel, has a rectangular shape, and a mesh size of (10-20) × (5-11) mm. It filters debris in the river water and prevents fish in the river from being sucked into the pipe; the support column 1 is fixed at the bottom of the water tank 2. The support column is welded by 40#~60# I-steel with a width of 1. The bottom plate is fixed at the bottom of the support column 1 to ensure that the water tank is fixed reliably. Two suction pipes 8 are connected to the right side of the water tank 2. The suction pipe 8 has a diameter of φ1400~φ1600mm, a length of 150~200m, and a thickness of 14~16mm. It is inserted into the water tank 1 by 100~300mm. It is designed to use spiral double-sided welded pipes with a length of 12m / root, a material of Q235, and a connection form of 1. The quick flange joint is welded at every 12m interface. The flanges are connected with M24×100 bolts. When welding the flanges, a 30° groove is made and continuous welding is performed. The welding height is greater than 15mm. A 3-5mm wear-resistant rubber sheet is pasted inside the suction pipe to extend the service life of the suction pipe. The suction pipe is cast on the inner wall of the caisson. The purpose is to ensure that the suction pipe is fixed reliably and eliminate the resonance caused by cavitation and turbulence. The impeller 3 is fixed on the central frame of the water tank 2. The impeller 3 is directly opposite to the suction pipe 8. The thickness of the blades in the impeller is 1-3mm, the number of blades is 6-12 groups, the rotation direction is left-handed, and the blade material is corrosion-resistant aluminum-magnesium alloy material. The other end of the suction pipe 8 is connected to the water inlet end of the centrifugal water pump 16. The pump body of the centrifugal water pump adopts ZG23 0-450 material, double volute design, smooth and flawless flow channel, no sharp angles in all water flow parts, so that the flow rate and flow direction changes are balanced, the flow parts are treated with anti-corrosion coating, the cross-section of the channel is large enough to ensure that the required particle size of debris can pass through, the centrifugal water pump body structure is linear, beautiful appearance, compact structure, shortening the support distance at both ends of the pump body, increasing the rigidity of the shaft, easy to install, and automatically correcting the pump cover; the centrifugal water pump shaft sleeve is made of 304 stainless steel, and the centrifugal water pump impeller ring is made of ZG230-450 material. According to the different turbidity of the river water, the minimum life of the main spare parts is 20000h~30000h, which improves the service life and pumping efficiency of the centrifugal water pump and reduces equipment failures;During the water suction process of the centrifugal water pump, the impeller 3 automatically rotates due to the strong suction force of the centrifugal water pump 16, without the need for a motor drive. The impeller 3 automatically rotates under the rotating hydraulic impact of the water suction pipe 8, automatically stirs the water flow, generates water sound, turbulence and vibration, and prevents fish in the river water from approaching the water tank 2. At the same time, it stirs the turbid particles in the water tank and precipitates out of the box body through the filter holes of the box body 2 with a mesh size of (10-20) × (5-11) mm. In particular, due to the action of gravity, the turbid particles are precipitated from the filter holes at the bottom of the box body 2, and the particles are effectively prevented from clogging the water suction pipe 8. ;

[0019] like Figure 1-4As shown, the first coupling 13 is connected between the suction pipe 8 and the centrifugal water pump 16. The two pipes on the left side of the first coupling 13 are respectively connected to the suction pipe 8, and the four pipes on the right side are provided with a third manual butterfly valve 42 in the middle; there are four centrifugal water pumps 16, which are connected in parallel. The two pipes on the left side of the first coupling 13 are provided with an electric ball valve 12 and a first electric butterfly valve 11, and the four pipes on the right side are provided with a first manual butterfly valve 14 and a second electric butterfly valve 15. The ends of the four pipes on the right side of the first coupling 13 are respectively connected to the water inlet end of the centrifugal water pump 16. The first coupling 13 allows the two sets of suction pipes 8 to be repaired alone without affecting production, such as replacing any one of them. The bottom of the water tank 2 is connected to the flushing pipe 7, and the nozzles are evenly arranged at the end of the flushing pipe 7. The number of nozzles is 5-12 groups. The other end of the flushing pipe 7 is connected to the water outlet of the centrifugal water pump 16. The flushing pipe 7 is provided with an electric flushing valve 17. The electric flushing valve 17 is interlocked with the concentration detection sensor PLC to realize logic programming and intelligent control, so as to realize the goal of automatically flushing the sludge and debris in the water tank, flush the sludge under the water tank 2, and ensure that there is no sludge in the space of 5 to 10 m below the water tank 2. The outlet end of the centrifugal water pump 16 is connected to the water supply pipe 23, and the centrifugal water pump 1 The first check valve 18, the second manual butterfly valve 19, the third electric butterfly valve 20, the second coupler 21 and the third coupler 22 are connected in sequence between the water outlet and the water supply pipe 23. The second coupler 21 is connected to the third coupler 22. There are four pipelines on the left side of the second coupler 21 and two pipelines on the right side. A fourth manual butterfly valve 43 is arranged in the middle. The four pipelines on the left side of the second coupler 21 are respectively connected to the water outlet of the centrifugal water pump 16. There are two pipelines on the left side and one pipeline on the right side of the third coupler 22. A fifth manual butterfly valve 44 and a sixth manual butterfly valve 45 are arranged in the middle. The two pipelines on the right side of the second coupler 21 are respectively connected to the two pipelines on the left side of the third coupler 22. , the right pipeline of the third coupler 22 is connected to the water supply pipe 23, and the second coupler 21 and the third coupler 22 are provided with multiple pipelines. When repairing any of the first check valve 18, the second manual butterfly valve 19, and the third electric butterfly valve 20, they do not affect each other, do not interfere with each other, and do not affect production; in order to replace the water pump impeller 3 and the shaft sleeve, it is necessary to close all the valves of the water suction pipe 8. If one of the electric ball valves or the electric butterfly valve is broken, it is necessary to close the manual butterfly valve to ensure that there is no water in the water pipe, which is convenient for disassembly and repair of the water pump, replacement of wearing parts and other operations; after closing the third manual butterfly valve 42, the two water suction pipes can absorb water separately without affecting each other. For example, one of the water suction pipes 8 can supply water separately, realizing 1# and 2# centrifugal water pump for water supply, and 3# and 4# centrifugal water pumps for maintenance; open the third manual butterfly valve 42 to realize water supply to any one of 1# to 4# centrifugal water pumps, and after closing the third manual butterfly valve 42, prevent water from flowing back to the centrifugal water pump. The functions of the fourth manual butterfly valve 43, the fifth manual butterfly valve 44 and the sixth manual butterfly valve 45 are similar to those of the third manual butterfly valve 42.

[0020] like Figure 1 As shown, the water supply pipe 23 is connected to the first sedimentation water tank 27, the water inlet of the first sedimentation water tank 27 is provided with a second check valve 25 and a first concentration detection sensor 26, the first sedimentation water tank 27 is provided with a first liquid level detection sensor 28, the first concentration detection sensor 26 is convenient for detecting the concentration, turbidity and turbidity particle distribution of the first sedimentation water tank 27; the first liquid level detection sensor 28 is convenient for detecting the liquid level of the first sedimentation water tank; a first sewage pipe 24 is provided at the bottom of the first sedimentation water tank 27, the water outlet of the first sedimentation water tank 27 is connected to the second sedimentation water tank 31 through a first overflow pipe 29, the water inlet of the second sedimentation water tank 31 is provided with a second concentration detection sensor 30, and the second sedimentation water tank 31 is provided with a second concentration detection sensor 30. A second liquid level detection sensor 32 is provided in the sedimentation tank 31, a second sewage pipe 46 is provided at the bottom of the second sedimentation tank 31, and a second concentration detection sensor 30 is convenient for detecting the concentration, turbidity and distribution of turbid particles in the second sedimentation tank 31; the second liquid level detection sensor 32 is convenient for detecting the liquid level of the second sedimentation tank 31; the second sedimentation tank 31 is connected to the first clear water tank 35 through the second overflow pipe 33, a third liquid level detection sensor 34 is provided in the first clear water tank 35, a third sewage pipe 47 is provided at the bottom of the first clear water tank 35, and a third concentration detection sensor 36 is provided at the water outlet of the first clear water tank 35, and the third liquid level detection sensor 34 is convenient for detecting the first clear water tank 3 5 liquid level, the third concentration detection sensor 36 is convenient for detecting the concentration, turbidity and turbid particle distribution at the outlet of the first clean water tank 35; the first clean water tank 35 is connected to the second clean water tank 39 through the third overflow pipe 37, and the front ends of the first overflow pipe 29, the second overflow pipe 33 and the third overflow pipe 37 are all provided with sieves, the sieve material is 304 stainless steel mesh, the installation angle is 30°~60°, the sieve hole size is 5×3mm, and the debris is filtered and separated; the second clean water tank 39 is provided with a fourth liquid level detection sensor 38, the bottom of the second clean water tank 39 is provided with a fourth sewage pipe 48, the center of the side wall of the second clean water tank 39 is connected to the outlet pipe 40, and the outlet water in the second clean water tank A fourth concentration detection sensor 41 is provided at the end of the pipe 40, and the fourth liquid level detection sensor 38 is convenient for detecting the liquid level of the second clean water tank 39. The fourth concentration detection sensor 41 is convenient for detecting the concentration, turbidity and distribution of turbid particles at the outlet of the second clean water tank 39. The outlet pipe 40 is used to provide industrial production water or on-site water. The first sewage pipe 24, the second sewage pipe 46, the third sewage pipe 47 and the fourth sewage pipe 48 are convenient for regular flushing and sludge discharge. The first clean water tank 35 and the second clean water tank 39 are shut down once a year for cleaning and flushing to discharge sludge, and the first sedimentation tank 27 and the second sedimentation tank 31 are shut down once a quarter for cleaning and flushing to discharge sludge, and the cycles are different.

[0021] Based on the above-mentioned pumping method of the caisson water suction pumping device, the specific steps are as follows: S1: The impeller 3 rotates automatically due to the strong suction force of the centrifugal water pump 16, without the need for a motor drive. The river water 5 enters the water tank 2 through the impeller 3 and the centrifugal water pump 16, is filtered through the screen, and is stirred by the impeller 3; S2: The river water 5 enters the suction pipe 8, the water supply pipe 23, the second check valve 25, the first sedimentation tank 27, the second sedimentation tank 31, the first clean water tank 35 and the second clean water tank 39 in sequence through the pumping action of the impeller 3 and the centrifugal water pump 16, and industrial water is provided by the outlet pipe 40. As the pumping volume and pressure of the centrifugal water pump 16 increase, the water enters the first clean water tank 35 and the second clean water tank 39 from the first overflow pipe 29 and the second overflow pipe 33 at the top of the first sedimentation tank 31 and the second sedimentation tank 32 in sequence. Combined with the river water concentration detection sensor 4, the river water level detection sensor 6, the first concentration detection sensor 26, the first liquid level detection sensor 28, the second concentration detection sensor 30, the second liquid level detection sensor 32, the first The three concentration detection sensors 34, the third liquid level detection sensor 36, the fourth concentration detection sensor 38, the fourth liquid level detection sensor 41, the electric ball valve 12, the first electric butterfly valve 11, the second electric butterfly valve 15, the third electric butterfly valve 20, the centrifugal water pump 16, the first check valve 18, the second check valve 25 and the controller are interlocked to drive the automatic intelligent caisson water suction pumping production intelligent logic programming PLC control line of river water-filtration-stirring-water suction-pumping-sedimentation-overflow. The whole process of filtering, conveying, sedimentation, separation and overflowing river water is an automatic detection perception intelligent logic programming PLC control process; the designed river water pumping concentration is 1-5%, the impurities are 1-5%, and the pumping flow rate is Q=3000-15000 m³ / h, the pumping pressure is 0.5~0.8Mpa, and the average specific gravity of river water is 1.01~1.09t / m³. After implementation, it can ensure the continuity of river water pumping, stabilize the river water delivery pressure, and prevent the water supply pipe from being blocked, worn, turbulent, vibrated, and having additional loads; S3: Automatically and intelligently pump water according to the liquid levels of the first sedimentation water tank 27 and the second sedimentation water tank 31: the first liquid level detection sensor 28 and the second liquid level detection sensor 32 automatically detect, sense and intelligently control the liquid levels of the first sedimentation water tank 27 and the second sedimentation water tank 31, respectively, and set the variable frequency motor operating parameters of the centrifugal water pump 16 to be interlocked with the liquid level detection sensors PLC of the first sedimentation water tank 27 and the second sedimentation water tank 31 to realize logic programming and intelligent control; when the first liquid level detection sensor 28 and the second liquid level detection sensor 32 automatically detect, sense and intelligently control the liquid levels of the first sedimentation water tank 27 and the second sedimentation water tank 31 to be between the upper and lower parts of the first overflow pipe 29 and the second overflow pipe 33, the existing operating frequency of the centrifugal water pump 16 is maintained, and water is automatically pumped at a normal frequency; when the first liquid level detection sensor 28 and the second liquid level detection sensor 32 automatically detect, sense and intelligently control the liquid levels of the first sedimentation water tank 27 and the second sedimentation water tank 31 to be lower than the first overflow pipe 29 and the second overflow pipe 33 position, automatically increase the frequency and running speed of the variable frequency motor of the centrifugal water pump 16, and automatically increase the water supply (the speed is proportional to the water supply) until the liquid level of the first sedimentation water tank 27 and the second sedimentation water tank 31 gradually rises to the position of the first overflow pipe 29 and the second overflow pipe 33; when the first liquid level detection sensor 28 and the second liquid level detection sensor 32 automatically detect, sense and intelligently control the liquid level of the first sedimentation water tank 27 and the second sedimentation water tank 31 to be higher than the position of the first overflow pipe 29 and the second overflow pipe 33, the frequency and running speed of the variable frequency motor of the centrifugal water pump 16 are automatically reduced to reduce the water supply until the liquid level of the first sedimentation water tank 27 and the second sedimentation water tank 31 gradually decreases to the position of the first overflow pipe 29 and the second overflow pipe 33, and then resumes normal frequency operation; in addition, when the production water demand increases, the frequency and running speed of the variable frequency motors of the four centrifugal water pumps 16 are automatically increased through computer instructions to increase the water supply until the overflow water of the first sedimentation water tank 27 and the second sedimentation water tank 31 increases, further increasing the production water supply; S4: Automatic intelligent pumping according to the concentration of liquid in the first sedimentation tank 27 and the second sedimentation tank 31: the first concentration detection sensor 26 and the second concentration detection sensor 30 automatically detect, sense and intelligently control the concentration of liquid in the first sedimentation tank 27 and the second sedimentation tank 31, and set the variable frequency motor operating parameters of the centrifugal water pump 16 to interlock with the liquid concentration detection sensor PLC in the first sedimentation tank 27 and the second sedimentation tank 31 to achieve logic programming and intelligent control; when the first concentration detection sensor 26 and the second concentration detection sensor 30 in the first sedimentation tank 27 and the second sedimentation tank 31 automatically detect, sense and intelligently control the concentration of liquid in the first sedimentation tank 27 and the second sedimentation tank 31 When the water concentration at the water inlet is less than 5%, the existing operating frequency of the centrifugal water pump 16 is stabilized and water is pumped at a normal frequency; when the first concentration detection sensor 26 and the second concentration detection sensor 30 automatically detect, sense and intelligently control that the river water concentration at the water inlet of the first sedimentation tank 27 and the second sedimentation tank 31 is 5% less than 8%, an alarm signal is issued, and it is manually determined whether it is necessary to stop pumping water; when the first concentration detection sensor 26 and the second concentration detection sensor 30 detect that the river water concentration at the water inlet of the first sedimentation tank 27 and the second sedimentation tank 31 is greater than 8%, an alarm signal is issued and the machine automatically stops after 60 seconds to prevent the centrifugal water pump 16 from absorbing high-concentration river water, clogging pipes and valves, and wearing the pump casing and impeller 3, thereby extending the service life of spare parts; S5: Automatic intelligent pumping according to the level of the river water 5: The river water level detection sensor 6 automatically detects, senses and intelligently controls the high and low positions of the river water level, and sets the variable frequency motor operating parameters of the centrifugal water pump 16 and the river water level detection sensor 6 PLC interlocking realizes logic programming and intelligent control. When the river water level detection sensor 6 automatically detects, senses and intelligently controls the river water level to be higher than the top of the water tank 2, the existing operating frequency of the centrifugal water pump 16 is maintained and water is pumped at a normal frequency; when the river water level detection sensor 6 automatically detects, senses and intelligently controls the river water 5 level to be 100 to 300 mm lower than the top of the water tank 2, the frequency conversion motor frequency and operating speed of the centrifugal water pump 16 are automatically reduced to reduce the water supply, and the upstream is notified to open the gate to release water until the river water 5 level gradually rises to the top position of the centrifugal water pump 16; when the river water level detection sensor 6 automatically detects, senses and intelligently controls the river water level to be 10 to 50 mm lower than the top of the suction pipe 8, the centrifugal water pump 16 is automatically stopped to eliminate early failure safety accidents such as large equipment vibration, impeller breakage and flying out, and pump body cracking caused by emptying, cavitation, and turbulence of the centrifugal water pump 16, and the upstream is notified to open more gates to increase the amount of water released; S6: Automatically and intelligently pump water according to the river water concentration: the river water concentration detection sensor 4 automatically detects, senses and intelligently controls the river water concentration near the water tank, and sets the variable frequency motor operating parameters of the centrifugal water pump 16 to interlock with the river water concentration detection sensor 4 PLC to realize logic programming and intelligent control. When the river water concentration detection sensor 4 automatically detects, senses and intelligently controls that the water concentration at the water inlet of the water tank 2 is less than 5%, the existing operating frequency of the centrifugal water pump 16 is stabilized and water is pumped at a normal frequency; when the river water concentration detection sensor 4 automatically detects, senses and intelligently controls that the river water concentration at the water inlet of the water tank 2 is 5% less than 8%, an alarm signal is issued, and it is manually determined whether the pumping needs to be stopped; when the river water concentration detection sensor 4 detects that the river water concentration at the water inlet of the water tank 2 is greater than 8%, an alarm signal is issued and the machine automatically stops 60 seconds later to prevent the centrifugal water pump 16 from absorbing high-concentration river water, clogging pipes and valves, and wearing the pump casing and impeller 3, thereby extending the service life of spare parts; S7: When the river water concentration detection sensor 4 automatically detects, senses and intelligently controls that the river water concentration at the water inlet hole of the water tank 2 is greater than 5%, and the variable frequency motor of the electric flushing valve 17 and the centrifugal water pump 16 are interlocked with the concentration detection sensor 4 PLC to realize logic programming and intelligent control, the electric flushing valve 17 of the flushing pipe 7 at the bottom of the water tank 2 is automatically opened to realize automatic flushing of the nozzle at the head of the flushing pipe 7 under high-pressure water; in addition, when the system is shut down for maintenance, the sludge under the water tank 2 is regularly flushed to ensure that the 5-10m below the water tank is clean and free of sludge.

Claims

1. A caisson water suction pumping device, characterized in that: It includes a filtering mechanism, a pumping mechanism, a sedimentation separation mechanism and a controller. The filtering mechanism is placed in river water. A river water concentration detection sensor and a river water level detection sensor are arranged in the river water. The pumping mechanism is placed in a caisson. The filtering mechanism includes a water tank. The pumping mechanism includes a centrifugal water pump. The sedimentation separation mechanism includes a first sedimentation water tank and a second sedimentation water tank. A water inlet hole is provided on the wall of the water tank. A frame is welded with channel steel inside the water tank. A screen is fixed outside the water tank by bolts and a pressure plate. A support column is fixed at the bottom of the water tank. A bottom plate is fixed at the bottom end of the support column. A water suction pipe is connected to the right side of the water tank. The impeller is fixed on the central frame of the water tank, and the impeller is facing the suction pipe. The other end of the suction pipe is connected to the water inlet of the centrifugal water pump. The first coupling is connected between the suction pipe and the centrifugal water pump. The number of the suction pipes is consistent with the number of pipelines on the left side of the first coupling. The number of the centrifugal water pumps is consistent with the number of water pipes on the right side of the first coupling. An electric ball valve and an electric butterfly valve are arranged on the left side of the first coupling, and a manual butterfly valve and an electric butterfly valve are arranged on the right side. A flushing pipe is connected to the bottom of the water tank. The other end of the flushing pipe is connected to the water outlet of the centrifugal water pump. An electric flushing valve is arranged on the flushing pipe. The water outlet of the centrifugal water pump is not connected to the water supply pipe. The water supply pipe The first sedimentation tank is connected to the first sedimentation tank, the water inlet of the first sedimentation tank is provided with a check valve and a concentration detection sensor, the first sedimentation tank is provided with a liquid level detection sensor, the bottom of the first sedimentation tank is provided with a sewage pipe, the water outlet of the first sedimentation tank is connected to the second sedimentation tank through an overflow pipe, the water inlet of the second sedimentation tank is provided with a concentration detection sensor, the second sedimentation tank is provided with a liquid level detection sensor, the bottom of the second sedimentation tank is provided with a sewage pipe, the second sedimentation tank is connected to the first clear water tank through an overflow pipe, the first clear water tank is provided with a liquid level detection sensor, the bottom of the first clear water tank is provided with a sewage pipe, and the water outlet of the first clear water tank is provided with a concentration detection sensor. The first clean water tank is connected to the second clean water tank through an overflow pipe, a liquid level detection sensor is arranged in the second clean water tank, a sewage pipe is arranged at the bottom of the second clean water tank, the center of the side wall of the second clean water tank is connected to the outlet pipe, a concentration detection sensor is arranged at the outlet pipe end of the second clean water tank, the variable frequency motors of the electric butterfly valve, the electric ball valve and the centrifugal water pump are all connected to the controller, the electric butterfly valve, the electric ball valve and the centrifugal water pump are interlocked with the various concentration detection sensors and the liquid level detection sensor PLC to realize logic programming and intelligent control, and realize automatic intelligent control of the flow rate and pressure of the centrifugal water pump according to the liquid level and concentration perception.

2. A caisson water suction pumping device according to claim 1, characterized in that: The impeller, flushing pipe, water suction pipe and centrifugal water pump are all in multiple groups.

3. A caisson water suction pumping device according to claim 2, characterized in that: The water suction pipe is cast on the inner wall of the caisson.

4. The caisson water suction pumping device according to claim 3, characterized in that: The nozzles are evenly arranged at the end of the flushing pipe.

5. The caisson water suction pumping device according to claim 4, characterized in that: A check valve, a manual butterfly valve, an electric butterfly valve, a second connector and a third connector are connected in sequence between the water outlet of the centrifugal water pump and the water supply pipe. The check valve is connected to the controller, and the check valve is interlocked with each concentration detection sensor and the liquid level detection sensor PLC.

6. The caisson water suction pumping device according to claim 5, characterized in that: The first connector has two pipelines on the left side and four pipelines on the right side, and a manual butterfly valve is arranged in the middle.

7. The caisson water suction pumping device according to claim 6, characterized in that: The second coupler is connected to the third coupler. The second coupler has four pipes on the left side and two pipes on the right side, with a manual butterfly valve in the middle. The third coupler has two pipes on the left side and one pipe on the right side, with two manual butterfly valves in the middle. The right side of the second coupler is connected to the left side of the third coupler, and the right side pipe of the third coupler is connected to the water supply pipe.

8. The caisson water suction pumping device according to claim 7, characterized in that: The water supply angle of the water supply pipe is less than 90°.

9. The pumping method of the caisson water suction pumping device according to claim 8, characterized in that: The specific steps are as follows: S1: The impeller rotates automatically through the strong suction of the centrifugal water pump, without the need for a motor drive. The river water enters the water tank through the impeller and the centrifugal water pump, is filtered through the screen, and is stirred by the impeller; S2: River water enters the suction pipe, water supply pipe, check valve, first sedimentation tank, second sedimentation tank, first clear water tank and second clear water tank in turn through the pumping action of impeller and centrifugal water pump, and industrial water is provided by the outlet pipe. As the pumping volume and pressure of the centrifugal water pump increase, water enters the first clear water tank and the second clear water tank from the top overflow pipe of the first sedimentation tank and the second sedimentation tank. The concentration detection sensor, liquid level detection sensor, electric ball valve, electric butterfly valve, centrifugal water pump, check valve and controller are interlocked to drive the automatic intelligent caisson water suction pumping production intelligent logic programming PLC control line of river water-filtration-stirring-water suction-pumping-sedimentation-overflow. The whole process of filtering, conveying, sedimentation, separation and overflowing river water is an automatic detection perception intelligent logic programming PLC control process; S3: Automatically and intelligently pump water according to the liquid levels of the first sedimentation tank and the second sedimentation tank: the liquid level detection sensor automatically detects, senses and intelligently controls the liquid levels of the first sedimentation tank and the second sedimentation tank, and sets the variable frequency motor operating parameters of the centrifugal water pump to be interlocked with the liquid level detection sensor PLC of the first sedimentation tank and the second sedimentation tank to realize logic programming and intelligent control; when the liquid level detection sensor automatically detects, senses and intelligently controls the liquid levels of the first sedimentation tank and the second sedimentation tank to be between the upper and lower parts of the overflow pipe, the existing operating frequency of the centrifugal water pump is maintained, and water is automatically pumped at a normal frequency; when the liquid level detection sensor automatically detects, senses and intelligently controls the liquid levels of the first sedimentation tank and the second sedimentation tank to be lower than the position below the overflow pipe, the frequency conversion of the centrifugal water pump is automatically increased. The motor frequency and running speed automatically increase the water supply (the speed is proportional to the water supply) until the liquid level of the first sedimentation tank and the second sedimentation tank gradually rises to the overflow pipe position; when the liquid level detection sensor automatically detects, senses and intelligently controls the first sedimentation tank and the second sedimentation tank to be higher than the overflow pipe position, the frequency and running speed of the centrifugal water pump variable frequency motor are automatically reduced to reduce the water supply until the liquid level of the first sedimentation tank and the second sedimentation tank gradually decreases to approach the overflow pipe position, and then resumes normal frequency operation; in addition, when the production water demand increases, the frequency and running speed of the variable frequency motors of 2 to 6 centrifugal water pumps are automatically increased through computer instructions to increase the water supply until the overflow water of the first sedimentation tank and the second sedimentation tank increases, further increasing the production water supply; S4: Automatically and intelligently pump water according to the liquid concentration in the first sedimentation tank and the second sedimentation tank: the concentration detection sensor automatically detects, senses and intelligently controls the liquid concentration in the first sedimentation tank and the second sedimentation tank, and sets the variable frequency motor operating parameters of the centrifugal water pump to interlock with the liquid concentration detection sensor PLC in the first sedimentation tank and the second sedimentation tank to realize logic programming and intelligent control; when the liquid concentration detection sensor in the first sedimentation tank and the second sedimentation tank automatically detects, senses and intelligently controls that the water concentration at the water inlet of the first sedimentation tank and the second sedimentation tank is less than 5%, stabilize the existing operating frequency of the centrifugal water pump and pump water at a normal frequency; when the concentration detection sensor automatically detects, senses and intelligently controls that the river water concentration at the water inlet of the first sedimentation tank and the second sedimentation tank is 5% <8%, an alarm signal is issued, and it is manually determined whether it is necessary to stop pumping water; when the concentration detection sensor detects that the river water concentration at the water inlet of the first sedimentation tank and the second sedimentation tank is >8%, the alarm signal is issued and the machine automatically stops 60 seconds later; S5: Automatic intelligent pumping according to the river water level: The river water level detection sensor automatically detects, senses and intelligently controls the high and low positions of the river water level, and sets the variable frequency motor operating parameters of the centrifugal water pump to interlock with the river water level detection sensor PLC to achieve logic programming and intelligent control. When the river water level detection sensor automatically detects, senses and intelligently controls the river water level to be higher than the top of the water tank, the existing operating frequency of the centrifugal water pump is maintained and water is pumped at a normal frequency; when the river water level detection sensor automatically detects, senses and intelligently controls the river water level to be 100 to 300 mm lower than the top of the water tank, the variable frequency motor frequency and operating speed of the centrifugal water pump are automatically reduced to reduce the water supply, and the upstream is notified to open the gate to release water until the river water level gradually rises to the top of the centrifugal water pump; when the river water level detection sensor automatically detects, senses and intelligently controls the river water level to be 10 to 50 mm lower than the top of the suction pipe, the centrifugal water pump is automatically stopped, and the upstream is notified to open more gates to increase the amount of water released; S6: Automatically and intelligently pump water according to the river water concentration: The river water concentration detection sensor automatically detects, senses and intelligently controls the river water concentration near the water tank, and sets the variable frequency motor operating parameters of the centrifugal water pump to interlock with the river water concentration detection sensor PLC to achieve logic programming and intelligent control. When the river water concentration detection sensor automatically detects, senses and intelligently controls that the water concentration at the water inlet of the water tank is less than 5%, the existing operating frequency of the centrifugal water pump is stabilized and water is pumped at a normal frequency; when the river water concentration detection sensor automatically detects, senses and intelligently controls that the river water concentration at the water inlet is 5% less than 8%, an alarm signal is issued, and it is manually determined whether the pumping needs to be stopped; when the river water concentration detection sensor detects that the river water concentration at the water inlet of the water tank is greater than 8%, the alarm signal is issued and the machine automatically stops 60 seconds later; S7: When the river water concentration detection sensor automatically detects, senses and intelligently controls that the river water concentration at the water inlet of the water tank is greater than 5%, and the variable frequency motor of the electric flushing valve and the centrifugal water pump is interlocked with the river water concentration detection sensor PLC, logical programming and intelligent control are realized, and the electric flushing valve of the flushing pipe at the bottom of the water tank is automatically opened to realize automatic flushing of the nozzle at the head of the flushing pipe under high-pressure water; in addition, when the system is shut down for maintenance, the sludge under the water tank is regularly flushed to ensure that the area 5 to 10 meters below the water tank is clean and free of sludge.

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