Fly ash washing resource utilization system

Abstract

The invention belongs to the technical field of fly ash treatment, particularly relates to a fly ash washing resource utilization system, and provides the following scheme aiming at the problem that an existing fly ash washing resource utilization system is poor in washing effect: the fly ash washing resource utilization system comprises a washing tank; the first partition bin, the second partition bin and the third partition bin are sequentially arranged on the flushing tank; and the material conveying pipe is arranged on the flushing tank, a cutting groove is formed in the material conveying pipe, two symmetrical baffles are fixedly connected into the cutting groove, and a spiral rod is movably connected to the inner wall of the material conveying pipe. According to the fly ash washing resource utilization system disclosed by the invention, water which does not effectively dissolve soluble substances in fly ash in the partition bin II and the partition bin III can flow back, so that the fly ash in the partition bin I and the partition bin II can be washed again, the dissolution rate of the fly ash is increased in water recycling, the washing effect of the device is improved, and the service life of the device is prolonged. The dissolution efficiency of the fly ash is improved, and the treatment effect on the fly ash is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of fly ash treatment, and in particular to a fly ash water washing resource utilization system. Background Art

[0002] Fly ash from municipal solid waste incineration refers to the bottom ash collected by the flue gas purification system of municipal solid waste incineration facilities and the bottom ash settled at the bottom of flues and chimneys. It is rich in harmful substances such as dioxins and heavy metals. Before the fly ash is harmlessly recycled, it needs to be washed with water to separate water-soluble substances from insoluble substances.

[0003] In the process of washing fly ash, the existing fly ash water washing resource utilization system needs to use a large amount of water to fully dissolve the soluble substances in the fly ash into the water. This method not only has poor washing effect, but also greatly increases water consumption and energy consumption, which has an adverse impact on the resource utilization of fly ash. Summary of the Invention

[0004] The invention discloses a fly ash water washing resource utilization system, which aims to solve the technical problem of poor flushing effect of the existing fly ash water washing resource utilization system in the background technology.

[0005] The present invention proposes a fly ash water washing resource utilization system, comprising:

[0006] flushing tank;

[0007] Partition 1, partition 2 and partition 3, wherein the partition 1, partition 2 and partition 3 are sequentially arranged on the flushing tank;

[0008] The feed pipe is arranged on the flushing tank, and a groove is opened on the feed pipe. Two symmetrical baffles are fixedly connected in the groove, and a spiral rod is movably connected to the inner wall of the feed pipe. The feed pipe is provided with a plurality of equidistantly distributed filtering holes;

[0009] A feed hopper, which is arranged on the feed pipe and located outside the flushing tank;

[0010] A flushing pipe, the outside of which is fixedly connected to the upper side of the flushing tank, a water pump is provided on the outside of the flushing tank, and the output end of the water pump is connected to the flushing pipe through a conduit;

[0011] A countercurrent backwash module is located at the bottom of the flushing tank. The countercurrent backwash module is used to return the flushing water in compartment three and compartment two, and use the wastewater of the next level to wash the fly ash of the previous level.

[0012] In a preferred embodiment, the countercurrent backwash module includes two annular fixed plates, the bottom inner walls of compartment two and compartment three are provided with circular holes, the inner walls of the two circular holes are fixedly connected to the outside of the two annular fixed plates respectively, the inner walls of the annular fixed plates are fixedly connected with filter plates, the bottoms of the annular fixed plates are movably connected with mesh centrifugal cylinders, the outsides of the mesh centrifugal cylinders are provided with filter cotton, and the bottoms of the annular fixed plates are provided with collecting cylinders, the bottoms of the collecting cylinders are provided with circular openings, the inner walls of the circular openings are fixedly connected with hoses, a sealing ring is provided between the annular fixed plates and the collecting cylinders, the bottoms of the collecting cylinders are fixedly connected with pumps, and the output ends of the pumps are connected to the hoses through thin tubes; the two The ends of the hoses away from the collecting cylinders are fixedly connected to water pipes, the outsides of the water pipes are fixedly connected to the upper sides of the flushing troughs, a plurality of equally spaced nozzles are provided on the water pipes, the nozzles on the two water pipes are respectively located above compartment one and compartment two, and a circular groove is provided at the bottom of the collecting cylinders, a circular shaft is movably connected in the circular grooves, a fitting block is fixedly connected to the outside of the circular shaft, a clamping ring is plugged into the outside of the fitting block, and the upper sides of the clamping rings are fixedly connected to the bottom of the mesh centrifugal cylinder on the same side; the bottoms of the two collecting cylinders are fixedly connected to motor one, the output ends of motor one are connected to the bottom of the circular shaft on the same side through a coupling, and the inner walls of the annular fixing plates are fixedly connected to The mounting frame, the bottom of the mounting frame is fixedly connected with a brush, the outside of the brush is in contact with the inner wall of the mesh centrifugal cylinder, and the bottom of the mesh centrifugal cylinder is fixedly connected with a stirring block, the inner walls of compartment one, compartment two and compartment three are provided with slots, the slots are fixedly connected with a drain pipe, the outside of the drain pipe is provided with an electronic valve, the outside of the flushing tank is provided with a drive motor, the output end of the drive motor is connected to one side of the spiral rod through a coupling; the outside of the two annular fixing plates are fixedly connected to two symmetrical mounting seats, the bottom of the mounting seats are fixedly connected with a latch, the latch is provided with an annular groove, the outside of the latch is plugged with a stabilizing seat, and the outside of the stabilizing seat is connected to the collecting The outside of the cylinder is fixedly connected, and three circumferentially equidistant sliding grooves are provided on the upper side of the stable seat, and locking rods are slidably connected in the sliding grooves, and short rods are fixedly connected to the upper sides of the locking rods; the outsides of the two latches are slidably connected to a rotating frame, and the bottoms of the rotating frames are movably connected to the upper sides of the stable seats on the same side, and the outsides of the locking rods are clamped with the inner walls of the annular grooves on the same side, and three circumferentially equidistant curved grooves are provided on the rotating frame, and the inner walls of the curved grooves are slidably connected to the outsides of the short rods on the same side, and the inner walls of the rotating frames are fixedly connected with a coil spring 1, and the end of the coil spring 1 away from the rotating frame is fixedly connected to the outside of the stable seat on the same side, and a feed anti-blocking module is provided on the feed hopper.

[0013] In a preferred embodiment, the feed anti-blocking module includes a base, the inner wall of the base is fixedly connected to the outside of the feed hopper, a gear ring 1 is provided on the outside of the feed hopper, the bottom of the gear ring 1 is movably connected to the upper side of the base, and the inner wall of the feed hopper is provided with three scrapers equidistantly distributed around the circumference, the bottoms of the scrapers are all fixedly connected to the upper side of the gear ring 1; the upper side of the base is fixedly connected to motor 2, the output end of motor 2 is connected to gear 1 through a coupling, gear 1 is meshed with gear ring 1, and the outer fixed connection of the three scrapers has the same notch Gear; The upper side of the pedestal is movably connected with a column, and the upper side of the column is rotatably provided with a support frame through a bearing, the bottom of the support frame is fixedly connected to the upper side of the pedestal, and a fixing ring is provided on the outside of the nozzle, the bottom of the fixing ring is fixedly connected to the upper side of the pedestal, and the inner wall of the fixing ring is fixedly connected with a second coil spring, and the end of the second coil spring away from the fixing ring is fixedly connected to the outside of the column; the outside of the column is fixedly connected with a knocking rod, the outside of the knocking rod is in contact with the outside of the feed hopper, and the outside of the column is fixedly connected with a second gear, and the second gear is meshed with the notched gear.

[0014] From the above, it can be seen that the fly ash water washing resource utilization system provided by the present invention has the function of recirculating the water in compartment two and compartment three that has not effectively dissolved the soluble substances in the fly ash, thereby realizing the fly ash in compartment one and compartment two to be flushed again. In the recycling of water, the dissolution rate of fly ash is enhanced, the water washing effect of the device is improved, the dissolution efficiency of fly ash is improved, and the treatment effect of fly ash is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a fly ash water washing resource utilization system proposed by the present invention;

[0016] Figure 2 This is a schematic cross-sectional view of a fly ash water washing and resource utilization system proposed by the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of a countercurrent backwash module of a fly ash water washing resource utilization system proposed by the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of a mesh centrifugal drum in a fly ash water washing and resource utilization system proposed by the present invention;

[0019] Figure 5 This is a schematic diagram of the structure of a stabilizing seat of a fly ash water washing resource utilization system proposed by the present invention;

[0020] Figure 6 This is a schematic structural diagram of a feed anti-blocking module of a fly ash water washing resource utilization system proposed by the present invention;

[0021] Figure 7This is a schematic diagram of the knocking rod structure of the fly ash water washing resource utilization system proposed by the present invention.

[0022] In the figure: 1, flushing tank; 2, compartment 1; 3, compartment 2; 4, compartment 3; 5, feed pipe; 6, baffle; 7, feed hopper; 8, countercurrent backwash module; 801, annular fixing plate; 802, filter plate; 803, mesh centrifugal cylinder; 804, filter cotton; 805, collecting cylinder; 806, hose; 807, sealing ring; 808, water pipe; 809, nozzle; 810, mounting bracket; 811, brush; 812, motor 1; 813, fitting block; 814, clamping ring; 815, stirring block; 816, mounting base; 817, latch; 818, annular groove; 819, Stable seat; 820, locking rod; 821, short rod; 822, rotating frame; 823, curved groove; 824, coil spring 1; 825, pump; 9, feed anti-blocking module; 901, base; 902, gear ring 1; 903, scraper; 904, motor 2; 905, gear 1; 906, notched gear; 907, support frame; 908, column; 909, gear 2; 910, knocking rod; 911, fixing ring; 912, coil spring 2; 10, drive motor; 11, screw rod; 12, water pump; 13, flushing pipe; 14, drain pipe; 15, electronic valve; 16, filter hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] The fly ash water washing resource utilization system disclosed in the present invention is mainly used in scenarios where the flushing effect of the existing fly ash water washing resource utilization system is poor.

[0025] Reference Figure 1-Figure 7 , a fly ash water washing resource utilization system, comprising:

[0026] Rinse tank 1;

[0027] The first compartment 2, the second compartment 3 and the third compartment 4 are sequentially arranged on the washing tank 1;

[0028] The feed pipe 5 is arranged on the flushing tank 1. A groove is opened on the feed pipe 5. Two symmetrical baffles 6 are connected in the groove by bolts. The inner wall of the feed pipe 5 is rotatably connected to a screw rod 11 through a bearing. The feed pipe 5 is provided with a plurality of equidistantly distributed filter holes 16;

[0029] The feed hopper 7 is provided on the delivery pipe 5 and is located outside the flushing tank 1;

[0030] A flushing pipe 13, the outside of which is connected to the upper side of the flushing tank 1 by bolts. A water pump 12 is provided on the outside of the flushing tank 1, and the output end of the water pump 12 is connected to the flushing pipe 13 through a conduit;

[0031] The countercurrent backwash module 8 is located at the bottom of the flushing tank 1. The countercurrent backwash module 8 is used to return the flushing water in the compartment three 4 and the compartment two 3, and use the wastewater of the next level to wash the fly ash of the previous level.

[0032] The device utilizes the countercurrent backwash module 8 to recirculate the water in compartment 2 3 and compartment 3 4 that has not effectively dissolved the soluble substances in the fly ash, thereby achieving another flushing of the fly ash in compartment 1 2 and compartment 2 3. In the recycling of water, the dissolution rate of the fly ash is enhanced, the water washing effect of the device is improved, the dissolution efficiency of the fly ash is improved, and the treatment effect of the fly ash is enhanced.

[0033] Reference Figure 3 、 Figure 4 and Figure 5In a preferred embodiment, the countercurrent backwash module 8 includes two annular fixed plates 801, the bottom inner walls of the compartment 2 3 and the compartment 3 4 are each provided with a circular hole, the inner walls of the two circular holes are respectively connected to the outside of the two annular fixed plates 801 by bolts, the inner walls of the annular fixed plates 801 are connected with filter plates 802 by bolts, the bottoms of the annular fixed plates 801 are rotatably connected with mesh centrifugal cylinders 803 through bearings, the outsides of the mesh centrifugal cylinders 803 are provided with filter cotton 804, and the bottoms of the annular fixed plates 801 are each provided with collecting cylinders 805, the bottoms of the collecting cylinders 805 are each provided with a circular opening, the inner walls of the circular openings are connected with hoses 806 by bolts, and a filter is provided between the annular fixed plates 801 and the collecting cylinders 805. The sealing ring 807 and the bottom of the collecting tube 805 are connected to the pump 825 by bolts, and the output end of the pump 825 is connected to the hose 806 by a thin tube; the ends of the two hoses 806 away from the collecting tube 805 are connected to the water pipe 808 by bolts, and the outside of the water pipe 808 is connected to the upper side of the flushing tank 1 by bolts. A plurality of equally distributed nozzles 809 are provided on the water pipe 808, and the nozzles 809 on the two water pipes 808 are respectively located above the compartment 1 2 and the compartment 2 3, and the bottom of the collecting tube 805 is provided with a circular groove, and a circular shaft is rotatably connected to the circular groove through a bearing. The outside of the circular shaft is connected to the mosaic block 813 by bolts, and the outside of the mosaic block 813 is plugged with a clamping ring 814 The upper side of the clamping ring 814 is connected to the bottom of the mesh centrifugal cylinder 803 on the same side by bolts; the bottoms of the two collecting cylinders 805 are connected to the motor 1 812 by bolts, and the output ends of the motor 1 812 are connected to the bottom of the circular shaft on the same side by a coupling, and the inner wall of the annular fixing plate 801 is connected to the mounting bracket 810 by bolts, and the bottom of the mounting bracket 810 is connected to the brush 811 by bolts, and the outside of the brush 811 is in contact with the inner wall of the mesh centrifugal cylinder 803, and the bottom of the mesh centrifugal cylinder 803 is connected to the stirring block 815 by bolts, and the inner walls of the compartment 1 2, compartment 2 3 and compartment 3 4 are provided with slots, and the slots are connected with the drain pipe 14 by bolts, and the outside of the drain pipe 14 is provided with a screw thread. An electronic valve 15 is provided, and a driving motor 10 is provided on the outside of the flushing tank 1. The output end of the driving motor 10 is connected to one side of the screw rod 11 through a coupling; the outsides of the two annular fixing plates 801 are connected to two symmetrical mounting seats 816 by bolts, and the bottoms of the mounting seats 816 are connected to latches 817 by bolts. Annular grooves 818 are provided on the latches 817, and the outsides of the latches 817 are connected to stable seats 819. The outsides of the stable seats 819 are connected to the outsides of the collecting tube 805 on the same side by bolts, and the upper sides of the stable seats 819 are provided with three circumferentially equidistant sliding grooves, and the sliding grooves are slidably connected to locking rods 820, and the upper sides of the locking rods 820 are connected to short rods 821 by bolts;The exteriors of both latches 817 are slidably connected to a rotating frame 822. The bottoms of the rotating frames 822 are rotatably connected to the upper sides of the stabilizing seats 819 on the same side via bearings. The exteriors of the locking rods 820 engage the inner walls of the annular grooves 818 on the same side. The rotating frames 822 are each provided with three equally spaced curved grooves 823. The inner walls of the curved grooves 823 are slidably connected to the exteriors of the short rods 821 on the same side. Coil springs 824 are bolted to the inner walls of the rotating frames 822. The ends of the coil springs 824, facing away from the rotating frames 822, are bolted to the exteriors of the stabilizing seats 819 on the same side. A feed blockage prevention module 9 is provided on the feed hopper 7.

[0034] Specifically, the drive motor 10 is started, and the drive motor 10 drives the screw rod 11 to rotate, and the fly ash is fed into the feed hopper 7. Under the transportation of the screw rod 11, the fly ash passes through the compartment 1 2, the compartment 2 3 and the compartment 3 4 in sequence, and the water pump 12 is started, so that the flushing pipe 13 sprays water toward the delivery pipe 5 to flush the fly ash. The flushed waste water flows down through the filter hole 16, passes through the filtration of the filter plate 802 and enters the mesh centrifugal cylinder 803, and the motor 1 812 is started. The motor 1 812 drives the mesh centrifugal cylinder 803 and the stirring block 815 to rotate, and uses centrifugal force to filter the waste water and then throw it into the collection cylinder 805. The brush 811 will scrub the inner wall of the mesh centrifugal cylinder 803 during the rotation of the mesh centrifugal cylinder 803, and the pump is started. 825, the pump 825 transports the waste water through the hose 806 to the water pipe 808 and sprays it into the compartment 1 2 and the compartment 2 3 through the nozzle 809, so that the waste water can once again flush the fly ash in the feed pipe 5. After the flushing is completed, the electronic valve 15 is opened to discharge the waste water through the drain pipe 14. When it is necessary to clean and replace the mesh centrifugal cylinder 803 and the filter cotton 804, the rotating frame 822 is rotated to make the curved groove 823 push the short rod 821 connected to the locking rod 820 to move, so that the locking rod 820 releases the lock on the annular groove 818, and the stabilizing seat 819 together with the collecting cylinder 805 are removed from the pin 817. After cleaning or replacing the mesh centrifugal cylinder 803 and the filter cotton 804, follow the above steps to reinstall them.

[0035] In a specific application scenario, the countercurrent backwash module 8 is mainly suitable for the countercurrent backwash link in the countercurrent backwash process, that is, the countercurrent backwash module 8 uses the collecting tube 805 and the water pipe 808 to reversely transport the wastewater in the compartment 2 3 and the compartment 3 4 to the compartment 1 2 and the compartment 2 3, thereby realizing the re-flushing of the fly ash, increasing the number of flushing times, improving the absorption rate of soluble matter in the fly ash and saving water resources. The locking rod 820 and the annular groove 818 are used to improve the convenience of disassembly of the collecting tube 805, effectively reducing the difficulty of maintenance of the device, making the operation of the device smoother, and using the mesh centrifugal tube 803 and the brush 811 to improve the efficiency and fluency of solid-liquid separation of the device.

[0036] Reference Figure 6 and Figure 7 In a preferred embodiment, the feed anti-blocking module 9 includes a base 901, the inner wall of the base 901 is connected to the outside of the feed hopper 7 by bolts, the outside of the feed hopper 7 is provided with a gear ring 902, the bottom of the gear ring 902 is rotatably connected to the upper side of the base 901 through a bearing, and the inner wall of the feed hopper 7 is provided with three scrapers 903 distributed equidistantly around the circumference, the bottoms of the scrapers 903 are all connected to the upper side of the gear ring 902 by bolts; the upper side of the base 901 is connected to the motor 2 904 by bolts, the output end of the motor 2 904 is connected to the gear 1 905 through a coupling, the gear 1 905 is meshed with the gear ring 1 902, and the outsides of the three scrapers 903 are connected to the same notched gear 906 by bolts; the base 901 The upper side of the column 908 is rotatably connected to the column 908 through a bearing, and the upper side of the column 908 is rotatably connected to the support frame 907 through a bearing, and the bottom of the support frame 907 is connected to the upper side of the base 901 through bolts, and a fixing ring 911 is provided on the outside of the nozzle 809, and the bottom of the fixing ring 911 is connected to the upper side of the base 901 through bolts, and the inner wall of the fixing ring 911 is connected to the coil spring 2 912 through bolts, and the end of the coil spring 2 912 away from the fixing ring 911 is connected to the outside of the column 908 through bolts; the outside of the column 908 is connected to the knocking rod 910 through bolts, and the outside of the knocking rod 910 is in contact with the outside of the feed hopper 7, and the outside of the column 908 is connected to the gear 2 909 through bolts, and the gear 2 909 is engaged with the notched gear 906.

[0037] Specifically, after the fly ash is put into the feed hopper 7, the motor 2 904 is started, and the motor 2 904 drives the gear ring 1 902 to rotate, so that the scraper 903 can continuously scrape the inner wall of the feed hopper 7. During the rotation, the teeth on the notched gear 906 are released and separated from the gear 2 909, so that the coil spring 2 912 can regularly store and release energy, so that the knocking rod 910 completes the process of rotating, storing energy and releasing knocking on the column 908, so that the knocking rod 910 can continuously knock and vibrate the feed hopper 7.

[0038] In a specific application scenario, the feed anti-blocking module 9 is mainly suitable for the feed anti-blocking link in the feed anti-blocking process, that is, the feed anti-blocking module 9 uses the gear ring 1 902 and the scraper 903 to continuously clean up the fly ash adhering to the inner wall of the feed hopper 7 to prevent the fly ash from clumping on the inner wall of the feed hopper 7. The notched gear 906 and the gear 2 909 are used to enable the column 908 to regularly store energy in the coil spring 2 912, so that the knocking rod 910 can knock on the feed hopper 7 when the coil spring 2 912 releases energy, and the fly ash can pass through the feed hopper 7 more smoothly through vibration.

[0039] Working principle: After the fly ash is put into the feed hopper 7, the motor 2 904 is started, and the motor 2 904 drives the gear ring 1 902 to rotate, so that the scraper 903 can continuously scrape the inner wall of the feed hopper 7. During the rotation, the teeth on the notched gear 906 are released and separated from the gear 2 909, so that the coil spring 2 912 can regularly store and release energy, so that the knocking rod 910 completes the process of rotating, storing energy and releasing knocking on the column 908, so that the knocking rod 910 can continuously knock and vibrate the feed hopper 7. Hopper 7, start the drive motor 10, the drive motor 10 drives the screw rod 11 to rotate, and the fly ash is put into the feed hopper 7. Under the transportation of the screw rod 11, the fly ash passes through the compartment 1 2, the compartment 2 3 and the compartment 3 4 in sequence. Start the water pump 12, so that the flushing pipe 13 sprays water toward the feed pipe 5 to flush the fly ash. The flushed waste water flows down through the filter hole 16, passes through the filter plate 802 and enters the mesh centrifugal cylinder 803. Start the motor 1 812, and the motor 1 812 drives The mesh centrifugal cylinder 803 and the stirring block 815 rotate, and the wastewater is filtered by centrifugal force and thrown into the collecting cylinder 805. The brush 811 will scrub the inner wall of the mesh centrifugal cylinder 803 during its rotation. The pump 825 is started, and the pump 825 transports the wastewater to the water pipe 808 through the hose 806 and sprays it into the compartment 1 2 and the compartment 2 3 through the nozzle 809, so that the wastewater once again rinses the fly ash in the feeding pipe 5. After the rinsing is completed, the electronic valve 1 is opened. 5. Drain the wastewater through the drain pipe 14. When it is necessary to clean or replace the mesh centrifugal cylinder 803 and the filter cotton 804, rotate the rotating frame 822 so that the curved groove 823 pushes the short rod 821 connected to the locking rod 820 to move, thereby releasing the locking rod 820 from the annular groove 818. Remove the stabilizing seat 819 together with the collecting cylinder 805 from the latch 817. After cleaning or replacing the mesh centrifugal cylinder 803 and the filter cotton 804, follow the above steps to reinstall them.

[0040] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A fly ash washing resource utilization system, characterized in that: include: Rinse tank (1); Partition 1 (2), partition 2 (3) and partition 3 (4), wherein partition 1 (2), partition 2 (3) and partition 3 (4) are sequentially arranged on the flushing tank (1); A feed pipe (5), the feed pipe (5) being arranged on the flushing tank (1), the feed pipe (5) being provided with a slot, two symmetrical baffles (6) being fixedly connected in the slot, and a spiral rod (11) being movably connected to the inner wall of the feed pipe (5), and a plurality of equally spaced filter holes (16) being provided on the feed pipe (5); A feed hopper (7), the feed hopper (7) being arranged on the delivery pipe (5) and located outside the flushing tank (1); A flushing pipe (13), the outside of which is fixedly connected to the upper side of the flushing tank (1), a water pump (12) is provided outside the flushing tank (1), and the output end of the water pump (12) is connected to the flushing pipe (13) via a conduit; A countercurrent backwash module (8) is located at the bottom of the flushing tank (1). The countercurrent backwash module (8) is used to return the flushing water in the compartment three (4) and the compartment two (3) and use the wastewater of the next level to wash the fly ash of the previous level.

2. A fly ash water washing resource utilization system according to claim 1, characterized in that: The countercurrent backwash module (8) comprises two annular fixed plates (801), the bottom inner walls of the compartment 2 (3) and the compartment 3 (4) are both provided with circular holes, the inner walls of the two circular holes are respectively fixedly connected to the outside of the two annular fixed plates (801), the inner walls of the annular fixed plates (801) are both fixedly connected to the filter plates (802), the bottoms of the annular fixed plates (801) are both movably connected to the mesh centrifugal cylinders (803), and the outsides of the mesh centrifugal cylinders (803) are both provided with Filter cotton (804), and a collecting tube (805) is provided at the bottom of the annular fixing plate (801), a circular opening is opened at the bottom of the collecting tube (805), a hose (806) is fixedly connected to the inner wall of the circular opening, a sealing ring (807) is provided between the annular fixing plate (801) and the collecting tube (805), and a pump (825) is fixedly connected to the bottom of the collecting tube (805), and the output end of the pump (825) is connected to the hose (806) through a thin tube.

3. A fly ash water washing resource utilization system according to claim 2, characterized in that: The ends of the two hoses (806) away from the collecting tube (805) are fixedly connected to a water pipe (808), the outsides of the water pipes (808) are fixedly connected to the upper side of the flushing tank (1), and a plurality of nozzles (809) distributed at equal intervals are provided on the water pipes (808). The nozzles (809) on the two water pipes (808) are respectively located above the first compartment (2) and the second compartment (3). A circular groove is provided at the bottom of the collecting tube (805), a circular shaft is movably connected in the circular groove, and a fitting block (813) is fixedly connected to the outside of the fitting block (813), and a clamping ring (814) is inserted into the outside of the clamping ring (814), and the upper side of the clamping ring (814) is fixedly connected to the bottom of the mesh centrifugal tube (803) on the same side.

4. A fly ash water washing resource utilization system according to claim 3, characterized in that: The bottoms of the two collecting cylinders (805) are fixedly connected to motor 1 (812), and the output ends of motor 1 (812) are connected to the bottom of the circular shaft on the same side through a coupling. The inner wall of the annular fixed plate (801) is fixedly connected to a mounting frame (810), and the bottom of the mounting frame (810) is fixedly connected to a brush (811). The outside of the brush (811) contacts the inner wall of the mesh centrifugal cylinder (803), and the bottom of the mesh centrifugal cylinder (803) is fixedly connected to a stirring block (815). The inner walls of compartment 1 (2), compartment 2 (3) and compartment 3 (4) are each provided with a notch, and a drain pipe (14) is fixedly connected in the notch. The outside of the drain pipe (14) is provided with an electronic valve (15). A driving motor (10) is provided on the outside of the flushing tank (1), and the output end of the driving motor (10) is connected to one side of the screw rod (11) through a coupling.

5. The fly ash washing resource utilization system according to claim 4, characterized in that: The exteriors of the two annular fixing plates (801) are fixedly connected to two symmetrical mounting seats (816), the bottoms of the mounting seats (816) are fixedly connected to latches (817), the latches (817) are provided with annular grooves (818), the exteriors of the latches (817) are plugged with stabilizing seats (819), the exteriors of the stabilizing seats (819) are fixedly connected to the exteriors of the collecting tubes (805) on the same side, and the upper sides of the stabilizing seats (819) are provided with three circumferentially equidistantly distributed sliding grooves, the sliding grooves are slidably connected to locking rods (820), and the upper sides of the locking rods (820) are fixedly connected to short rods (821).

6. The fly ash water washing resource utilization system according to claim 1, characterized in that: The outsides of the two latches (817) are slidably connected to a rotating frame (822), the bottoms of the rotating frames (822) are movably connected to the upper sides of the stabilizing seats (819) on the same side, the outsides of the locking rods (820) are engaged with the inner walls of the annular grooves (818) on the same side, the rotating frames (822) are provided with three circumferentially equidistantly distributed curved grooves (823), the inner walls of the curved grooves (823) are slidably connected to the outsides of the short rods (821) on the same side, and the inner walls of the rotating frames (822) are fixedly connected to coil springs (824), the ends of the coil springs (824) away from the rotating frames (822) are fixedly connected to the outsides of the stabilizing seats (819) on the same side, and a feed anti-blocking module (9) is provided on the feed hopper (7).

7. The fly ash water washing resource utilization system according to claim 6, characterized in that: The feed anti-blocking module (9) comprises a support platform (901), the inner wall of the support platform (901) is fixedly connected to the outside of the feed hopper (7), a gear ring (902) is provided on the outside of the feed hopper (7), the bottom of the gear ring (902) is movably connected to the upper side of the support platform (901), and the inner wall of the feed hopper (7) is provided with three scrapers (903) distributed equidistantly around the circumference, and the bottoms of the scrapers (903) are all fixedly connected to the upper side of the gear ring (902).

8. The fly ash water washing resource utilization system according to claim 7, characterized in that: The upper side of the support platform (901) is fixedly connected to a second motor (904), the output end of the second motor (904) is connected to a first gear (905) via a coupling, the first gear (905) is meshed with the first gear ring (902), and the outsides of the three scrapers (903) are fixedly connected to the same notched gear (906).

9. The fly ash water washing resource utilization system according to claim 8, characterized in that: The upper side of the support platform (901) is movably connected to a column (908), and the upper side of the column (908) is rotatably provided with a support frame (907) through a bearing, and the bottom of the support frame (907) is fixedly connected to the upper side of the support platform (901), and a fixing ring (911) is provided on the outside of the nozzle (809), and the bottom of the fixing ring (911) is fixedly connected to the upper side of the support platform (901), and the inner wall of the fixing ring (911) is fixedly connected to a second coil spring (912), and one end of the second coil spring (912) away from the fixing ring (911) is fixedly connected to the outside of the column (908).

10. The fly ash water washing resource utilization system according to claim 8, characterized in that: The outside of the column (908) is fixedly connected to a knocking rod (910), the outside of the knocking rod (910) contacts the outside of the feed hopper (7), and the outside of the column (908) is fixedly connected to a second gear (909), which is engaged with the notched gear (906).

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