CN114932133A

CN114932133A - Fly ash treatment system

Info

Publication number: CN114932133A
Application number: CN202210305857.9A
Authority: CN
Inventors: 刘卫中
Original assignee: Jiaxing Changhong Environmental Protection Technology Co ltd
Current assignee: Jiaxing Changhong Environmental Protection Technology Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-08-23

Abstract

The invention discloses a fly ash treatment system, which comprises a mixing feeding device, a first water washing device, a first filter press, a first filter cake crusher, a second water washing device, a second filter press, a second filter cake crusher, a third water washing device and a third filter press which are sequentially arranged along the flow direction of fly ash solids; a filtrate feed pipe of the hardness removing device is respectively communicated with the first filter press, the second filter press and the third filter press through pipelines; the hardness removing discharge pipe of the hardness removing device is communicated to the filter, all components are matched with each other, water-soluble components in the fly ash can be effectively separated out, solid-liquid separation is carried out, and the hardness of the grey water is effectively reduced by introducing cement kiln tail gas containing a large amount of carbon dioxide into a washing process; meanwhile, the tail gas of the cement kiln can be utilized to the maximum extent, secondary filtration and solid-liquid separation are not needed, and the energy is saved and the environment is protected; the treatment efficiency is high, and continuous automatic production can be realized; and the cost can be greatly reduced.

Description

Fly ash treatment system

Technical Field

The invention relates to the technical field of waste incineration fly ash treatment, in particular to a fly ash treatment system.

Background

In recent years, the waste incineration gradually becomes the mainstream trend of domestic waste treatment in China due to the advantages of reduction, harmlessness and resource utilization, but the harm of chlorine salt in fly ash is not neglected, and along with the development of the technology, a fly ash washing treatment system appears, and the fly ash is melted and solidified after being washed to remove chlorine, decalcify, chelate heavy metal, evaporated and centrifuged, so that the problem of secondary pollution is avoided, and zero discharge of water is realized.

However, fly ash is an inevitable by-product generated in the process of waste incineration treatment, currently, in the treatment process of fly ash, fly ash from different sources needs to be mixed, and the mixed materials are conveyed and treated.

The early common flying dust washing system generally for manual control washs the progress, takes trouble hard, especially adds flying dust and rinsing water stage, owing to need ensure the abundant integration of flying dust and rinsing water, the feeding of throwing into water washing reactor every time all needs strict control, also has the automated control system through material level height and cooperation electronic valve in the floated level sensor control washing reactor, but general level sensor outer wall all crusts relatively more easily and leads to losing efficacy, influences automated control effect. In addition, the washing effect is not good, the water-soluble components in the fly ash cannot be effectively separated, solid-liquid separation is carried out, and the fly ash is respectively sent to a subsequent recycling process for treatment, so that the treatment efficiency is low, continuous automatic production is difficult to realize, the water consumption is high, water resources are wasted, and the later-stage sewage treatment cost is high.

The conventional filter press for treating fly ash cannot perform filter pressing according to the filtering condition, and usually judges according to the filtering time or filtering amount, so that the quality of filter residues after filter pressing is inconsistent, the filter press cannot judge according to the concentration of filtrate, and when the concentration of the filtrate is high, the situation of liquid leakage is easy to occur.

The washing filter cake after the fly ash is handled needs the breakage, just can carry out next operation, and the filter cake can produce a large amount of disintegrating slag after the breakage usually, and these disintegrating slag can splash out along with the work of breaker, and then can cause the pollution to the washing filter cake still can produce a certain amount of dust when broken, and these dusts can lead to the fact certain influence to operational environment.

The fly ash contains a large amount of heavy metals, high chloride ions and dioxin can cause serious pollution accidents, the health of residents is harmed, and the fly ash is classified as dangerous waste in all countries in the world. Because the components of the fly ash are complex, the burned fly ash enters water after being cooled and is continuously concentrated along with the recycling of the water to form the grey water rich in suspended matters, calcium and magnesium ions, silicon dioxide, aluminum ions and other components, the hardness index of the grey water is high, and the scaling and the blockage of equipment are easily caused, so that measures are needed to be taken to reduce the hardness.

The common hard water softening methods at present mainly comprise a sodium carbonate method, a cement kiln co-treatment method and the like. When the sodium carbonate method is adopted for hardness removal, a large amount of chloride ions are dissolved out, meanwhile, a large amount of calcium and magnesium ions are also dissolved out, the dissolution amount is uncontrollable, the calcium and magnesium ions are discharged to a water treatment process along with wastewater after dissolution, and a large amount of sodium carbonate is added to remove the calcium and magnesium ions, so that the resource waste is caused. The cement kiln co-processing method is adopted for hardness removal, carbon dioxide and sodium carbonate are subjected to combined hardness removal after water washing, the purpose of utilizing tail gas to the maximum extent cannot be achieved, secondary filtration is needed for solid-liquid separation, energy is not saved, and the environment is not protected.

Based on the above situation, the present invention provides a fly ash treatment system, which can effectively solve the above problems.

Disclosure of Invention

The invention aims to provide a fly ash treatment system. The fly ash treatment system can effectively separate water-soluble components in fly ash and carry out solid-liquid separation by matching the mixing feeding device, the first washing device, the first filter press, the first filter cake crusher, the second washing device, the second filter press, the second filter cake crusher, the third washing device, the third filter press and the hardness removal device, and can directly solidify calcium and magnesium ions in ash water and carry out solid-liquid separation with fly ash by introducing cement kiln tail gas containing a large amount of carbon dioxide into a washing process; meanwhile, the tail gas of the cement kiln can be utilized to the maximum extent, secondary filtration and solid-liquid separation are not needed, and the energy is saved and the environment is protected; the treatment efficiency is high, continuous automatic production can be realized, the labor intensity of workers is reduced, the labor environment of the workers is improved, and the health of the workers is protected; and the three-stage countercurrent washing mode is formed by mutual matching, so that water resources can be greatly saved, and the later-stage sewage treatment cost is reduced.

The invention is realized by the following technical scheme:

a fly ash treatment system comprises a mixing feeding device, a first water washing device, a first filter press, a first filter cake crusher, a second water washing device, a second filter press, a second filter cake crusher, a third water washing device and a third filter press which are sequentially arranged along the flow direction of fly ash solids;

the mixing and feeding device is used for mixing the fly ash from different sources; the feeding pipe of the mixing and feeding device is communicated with the feeding pipe of the first water washing device through a pipeline;

a spiral conveyor is also arranged on a pipeline between the feeding pipe of the mixing and feeding device and the feeding pipe of the first washing device and is used for conveying the mixed fly ash;

the powder conveying equipment/mode commonly used in the field can be used for conveying.

The discharge pipe of the first water washing device is communicated with the liquid storage cylinder of the first filter press through a pipeline;

the first filter press is used for carrying out solid-liquid separation on the water-ash mixture flowing out of the discharge pipe of the first washing device to obtain a filter cake and filtrate, wherein the filter cake is transferred to the first filter cake crusher to be crushed, and the filtrate flows out of the filtrate discharge port to the hardness removal device;

a filter cake powder outlet of the first filter cake crusher is communicated with a feeding pipe of the second water washing device through a pipeline;

a spiral conveyor is further arranged on a pipeline between a filter cake powder outlet of the first filter cake crusher and a feeding pipe of the second water washing device and is used for conveying filter cake powder crushed by the first filter cake crusher;

a discharge pipe of the second water washing device is communicated with a liquid storage cylinder of the second filter press through a pipeline;

the second filter press is used for carrying out solid-liquid separation on the water-ash mixture flowing out of the discharge pipe of the second water washing device to obtain a filter cake and filtrate, wherein the filter cake is transferred and conveyed to the second filter cake crusher to crush the filter cake, one part of the filtrate flows back to the feed pipe of the first water washing device through the first counter-flow pipeline, and the other part of the filtrate flows out to the hardness removal device through the filtrate discharge hole;

a filter cake powder outlet of the second filter cake crusher is communicated with a feed pipe of the third washing device through a pipeline;

a spiral conveyor is further arranged on a pipeline between a filter cake powder outlet of the second filter cake crusher and a feeding pipe of the third water washing device and is used for conveying filter cake powder crushed by the second filter cake crusher;

a discharge pipe of the third water washing device is communicated with a liquid storage cylinder of a third filter press through a pipeline;

the third filter press is used for carrying out solid-liquid separation on the water-ash mixture flowing out of the discharge pipe of the third washing device to obtain a filter cake and filtrate, wherein the filter cake is transferred and conveyed to the fly ash solid recovery treatment process for treatment, one part of the filtrate flows back to the feed pipe of the second washing device through the second counter-flow pipeline, and the other part of the filtrate flows out to the hardness removal device through the filtrate discharge hole;

a filtrate feeding pipe of the hardness removing device is respectively communicated with the first filter press, the second filter press and the third filter press through pipelines and is used for removing hardness of filtrate by using carbon dioxide; a hardness removing discharge pipe of the hardness removing device is communicated to a filter, and the filter is used for carrying out solid-liquid separation on a solid-liquid mixture flowing out of the hardness removing device to obtain filter residue and filtrate; so as to carry out further recycling treatment.

As a further description of the above technical solution: the first countercurrent pipeline and the second countercurrent pipeline are both provided with circulating booster pumps;

the feeding pipes of the first water washing device and the second water washing device are respectively communicated with a water replenishing pipeline and are used for replenishing water according to requirements; and the feeding pipe of the third water washing device is also communicated with a clear water inlet pipeline and is used for adding water according to the requirement.

As a further description of the above technical solution: the mixing and feeding device comprises a feeding pipe, a feeding mechanism is connected onto the feeding pipe, a large funnel is penetratingly and fixedly connected to the top of the feeding pipe, a plurality of small funnels which are arranged in an annular array are fixedly connected to the top of the large funnel, a double-shaft motor is fixedly connected to the top of the large funnel, a first stirring shaft is penetratingly and rotatably connected to the top of the small funnel, a driving assembly for driving a plurality of first stirring shafts to rotate synchronously is connected to an output end of one side of the double-shaft motor, and a stirring assembly for stirring materials in the large funnel is connected to an output end of the other side of the double-shaft motor;

the feeding mechanism comprises a driving motor fixedly connected to the side wall of the feeding pipe, the output end of the driving motor is fixedly connected with an auger shaft, and the auger shaft penetrates through the feeding pipe and is rotatably connected with the inner wall of the feeding pipe;

the bottom of one side, away from the driving motor, of the feeding pipe penetrates through and is fixedly connected with a discharging pipe which is obliquely arranged;

the mixed feeding device comprises a feeding pipe, wherein a feeding mechanism is connected to the feeding pipe, the top of the feeding pipe penetrates through and is fixedly connected with a large funnel, the top of the large funnel is fixedly connected with a plurality of small funnels which are arranged in an annular array, the top of the large funnel is fixedly connected with a double-shaft motor, and the top of the small funnel penetrates through and is rotatably connected with a first stirring shaft. According to the invention, through the mutual cooperation of the feeding pipe, the large hopper, the small hopper, the double-shaft motor, the first stirring shaft, the driving assembly and the stirring assembly, each fly ash is added into different small hoppers, the double-shaft motor drives the first stirring shaft to stir materials in the small hoppers independently, and the primarily stirred materials enter the large hopper and are stirred by the stirring assembly, so that the stirring efficiency can be fully improved, and the problem of uneven mixing can be effectively reduced.

The first water washing device, the second water washing device and the third water washing device (structure) are the same, and the first water washing device, the second water washing device and the third water washing device comprise fourth water washing reactors positioned in a fly ash water washing system;

a feeding pipe fixedly connected to the upper end of the fourth washing reactor and used for adding fly ash and rinsing water;

a discharge pipe fixedly connected to the lower end of the fourth water washing reactor and used for discharging slurry;

the sludge pump is fixedly connected to one end of the discharge pipe, which is far away from the fourth washing reactor, and is used for increasing the discharge pressure;

the valve structures are arranged on the outer walls of the feeding pipe and the discharging pipe and are used for controlling feeding and discharging time;

the visual structure is arranged on the front wall of the fourth water washing reactor and is used for observing the internal water washing condition;

the liquid level detection assembly is fixedly connected to the side wall of the fourth washing reactor and used for detecting the internal feeding height;

the cleaning structure is arranged on the liquid level detection assembly and used for cleaning the liquid level detection assembly;

the valve structure comprises a feed valve and a discharge valve, and the feed valve and the discharge valve are respectively and fixedly connected to the outer wall of the feed pipe and the outer wall of the discharge pipe;

the visual structure is an observation window, the observation window is embedded in the front wall of the fourth washing reactor, and the observation window and the fourth washing reactor are sealed through edge sealing;

the liquid level detection assembly comprises a fixed cover, an inner sleeve, an electric telescopic rod, a first connecting rod and a liquid level sensor, a round hole is formed in the side wall of the fourth washing reactor and close to the upper end of the side wall of the fourth washing reactor, the fixed cover is fixedly connected to the side wall of the fourth washing reactor and corresponds to the round hole in position, the inner sleeve is fixedly connected to the inner side wall of one end of the fixed cover, away from the fourth washing reactor, the end portion, away from the inner sleeve, of the inner sleeve is flush with the inner side wall of the fourth washing reactor, the electric telescopic rod is fixedly connected to the end portion, away from the fourth washing reactor, of the fixed cover, and the outer wall of an extending shaft of the electric telescopic rod penetrates through the side wall of the fixed cover and extends to the inside of the inner sleeve;

the first connecting rod and the liquid level sensor are sequentially and fixedly connected to the end part of the electric telescopic rod extending shaft extending into the inner sleeve from left to right, and the outer walls of the first connecting rod and the liquid level sensor are in sliding connection with the inner side wall of the inner sleeve;

the cleaning structure comprises a water spraying sleeve, a spring and a water spraying pipe, a water spraying cavity communicated with the interior of the fourth water washing reactor is formed between the outer wall of the inner sleeve and the inner side wall of the fixed cover, the water spraying pipe is fixedly connected to the outer wall of the fixed cover and close to one side of the electric telescopic rod, the water spraying pipe is communicated with the water spraying cavity, the water spraying sleeve is slidably connected to the inner side wall of the water spraying cavity and is slidably connected with the inner sleeve, a step is arranged on the outer wall of one end, away from the fourth water washing reactor, of the water spraying sleeve, the spring sleeve is arranged on the outer wall of the water spraying sleeve and is located between the step and the outer wall of the fourth water washing reactor, a water spraying cavity is formed in the inner wall, away from the fourth water washing reactor, of the water spraying sleeve is contacted with the inner side wall of the inner sleeve, and the water spraying cavity is communicated with the water spraying cavity;

the water washing device comprises a fourth water washing reactor positioned in a fly ash water washing system; and the feeding pipe is fixedly connected to the upper end of the fourth washing reactor and is used for adding fly ash and rinsing water. According to the invention, the extension shaft of the electric telescopic rod drives the liquid level sensor to extend into the fourth washing reactor, the liquid level height in the fourth washing reactor is controlled by matching with the feed valve, after discharging, clear water enters the water spraying cavity through the water spraying cavity and is sprayed out to the surface of the liquid level sensor through the water spraying hole, the liquid level sensor is cleaned, water spraying can be performed to and fro through the change of water pressure and matching with the spring, so that the surface of the liquid level sensor can be kept clean, the test is accurate, the manual maintenance frequency is greatly reduced, whether the liquid level height in the fourth washing reactor is consistent with the set height can be checked through the arranged observation window during manual inspection, the shutdown and the point inspection are avoided, and the production efficiency is improved.

The filter press comprises a first filter press body, a second filter press body and a third filter press body, wherein the first filter press body, the second filter press body and the third filter press body are all the same in structure, the first filter press body, the second filter press body and the third filter press body respectively comprise a filter press case, a liquid storage assembly is arranged at the top of the filter press case, an adjusting assembly, a filtrate assembly and a hydraulic assembly are sequentially arranged in the filter press case from the top to the bottom, the filtrate assembly comprises a fixed plate fixedly connected in the filter press case, slide bars are fixedly connected to two sides of the top of the fixed plate, the outer surfaces of the two slide bars are slidably connected with a same circular plate, supporting springs are sleeved on the outer surfaces of the two slide bars, a filter screen bag is fixedly connected in the circular plate, a telescopic frame is fixedly connected at the bottom of the circular plate and positioned at the periphery of the filter screen bag, a through groove is formed in the fixed plate, and the adjusting assembly comprises a gear shaft rotatably connected in the filter press case, a toothed plate is meshed with one side of the outer surface of the gear shaft, and the top of a circular plate at the bottom end of the toothed plate is fixedly connected;

the filter press (the first filter press, the second filter press and the third filter press) comprises a filter press case, wherein a liquid storage assembly is arranged at the top of the filter press case, an adjusting assembly, a filtrate assembly and a hydraulic assembly are sequentially arranged in the filter press case from the top to the bottom, the filtrate assembly comprises a fixed plate fixedly connected in the filter press case, two sides of the top of the fixed plate are fixedly connected with slide bars, and the outer surfaces of the two slide bars are slidably connected with a same circular plate. According to the invention, the disc is driven to move by setting the content of the filter residue in the filter screen bag, the filter residue in the filter screen bag provides certain gravity for the filter screen bag, the filter screen bag drives the toothed plate to move by the gravity of the internal residue, so that the switch valve on the first water outlet pipe can be controlled, and when the filter residue in the filter screen bag reaches a saturation value, the switch valve is driven to be closed, so that the condition of liquid leakage can be effectively avoided.

The first filter cake crusher and the second filter cake crusher are identical in structure, the first filter cake crusher and the second filter cake crusher respectively comprise a crushing barrel, splash-proof assemblies are arranged on two sides of the inner part of the crushing barrel, each splash-proof assembly comprises a second rotating plate which is rotatably connected to two sides of the inner wall of the crushing barrel, the top of each second rotating plate is fixedly connected with a connecting spring, the top of each second rotating plate is rotatably connected with a telescopic plate, a dust-proof assembly is arranged outside the crushing barrel and comprises a vacuum box fixedly connected to the front side of the crushing barrel, a piston plate is slidably connected inside the vacuum box, a push rod is fixedly connected to the bottom of the piston plate, the right side of the vacuum box is communicated with a water inlet pipe, the top of the vacuum box is communicated with a second water outlet pipe, the other end of the second water outlet pipe is communicated with the inside of the crushing barrel and is communicated with two telescopic pipes, the other ends of the two extension tubes are communicated with spray heads, the two spray heads are fixedly connected to the bottom of the second rotating plate, and the water inlet tube and the second water outlet tube are both provided with one-way valves;

the filter cake crusher (the first filter cake crusher and the second filter cake crusher) comprises a crushing barrel, splash-proof assemblies are arranged on two sides of the inner part of the crushing barrel respectively, the two splash-proof assemblies respectively comprise second rotating plates which are rotatably connected to two sides of the inner wall of the crushing barrel, connecting springs are fixedly connected to the tops of the two second rotating plates, telescopic plates are rotatably connected to the tops of the two second rotating plates respectively, a dustproof assembly is arranged on the outer part of the crushing barrel, and the dustproof assembly comprises a vacuum box which is fixedly connected to the front face of the crushing barrel. According to the invention, the second rotating plate is connected by the connecting spring, the water-washing filter cake can rotate by the gravity of the second rotating plate so as to enter the crushing box for crushing, the second rotating plate automatically resets at the moment, the residue after the water-washing filter cake is crushed is prevented from splashing, the protection effect is achieved, and the cleanliness of the fly ash treatment environment is effectively improved by the arrangement of the dustproof assembly.

The hardness removing device comprises a cement kiln tail gas tank, a first fan, a second fan, a first washing reactor, a second washing reactor, a third washing reactor and an absorption tower; the cement kiln tail gas tank is connected with the first fan through a pipeline, and the first fan conveys gas in the cement kiln tail gas tank to the first washing reactor and the second washing reactor respectively through pipelines; the first water washing reactor and the second water washing reactor are both provided with aeration devices; the upper part of the first water washing reactor is connected with the second water washing reactor through a first gas conveying pipe; the upper part of the second water washing reactor is connected with the third water washing reactor through a second gas conveying pipe, and the bottom of the second water washing reactor is connected with the third water washing reactor through a liquid conveying pipe; a third gas pipe is arranged at the top of the third water washing reactor, and the third water washing reactor is connected with the lower part of the absorption tower through the third gas pipe; the top of the absorption tower is connected with the second fan through a pipeline, and the second fan conveys tail gas generated by the absorption tower to the atmosphere through a pipeline.

The hardness removing device comprises a cement kiln tail gas tank; the cement kiln tail gas tank is connected with a first fan through a pipeline, and the first fan conveys gas in the cement kiln tail gas tank to a first washing reactor and a second washing reactor respectively through pipelines; the first water washing reactor and the second water washing reactor are both provided with aeration devices; the upper part of the first water washing reactor is connected with a second water washing reactor through a first gas pipe; according to the invention, the cement kiln tail gas containing a large amount of carbon dioxide is introduced into a washing process, and the aeration devices of the first washing reactor and the second washing reactor are utilized for efficient aeration during primary washing, so that calcium and magnesium ions in ash water are directly solidified and are subjected to solid-liquid separation together with fly ash, the hardness of the ash water can be effectively reduced, and the scaling and pollution blocking tendency of a gasification ash water system is greatly relieved; meanwhile, the tail gas of the cement kiln can be utilized to the maximum extent, secondary filtration and solid-liquid separation are not needed, and the method is energy-saving and environment-friendly.

As a further description of the above technical solution: the feeding mechanism comprises a driving motor fixedly connected to the side wall of the feeding pipe, an auger shaft is fixedly connected to the output end of the driving motor, and the auger shaft penetrates through the feeding pipe and is connected with the inner wall of the feeding pipe in a rotating mode.

As a further description of the above technical solution: the bottom of one side of the feeding pipe, which is far away from the driving motor, penetrates through and is fixedly connected with a discharging pipe which is obliquely arranged.

As a further description of the above technical solution: the feeding pipe is fixedly connected with a plurality of supporting frames along the two sides of the length direction, and the bottom of each supporting frame is fixedly connected with a positioning plate.

As a further description of the above technical solution: the tops of the small hoppers are all connected with a material guide groove for guiding fly ash in a penetrating way.

As a further description of the above technical solution: the first stirring shaft comprises a vertical shaft which penetrates through the small funnel and is rotatably connected with the small funnel, the bottom of the vertical shaft is connected with a spiral shaft, and the spiral shaft is positioned inside the small funnel.

As a further description of the above technical solution: the driving assembly comprises a central shaft fixedly connected with the corresponding output end of the double-shaft motor, a central gear is fixedly sleeved on the outer surface of the central shaft, and external gears meshed with the central gear are fixedly sleeved on the outer surfaces of the vertical shafts.

As a further description of the above technical solution: the stirring subassembly includes the puddler that corresponds output fixed connection with double-axis motor, the puddler runs through and extends to in the big funnel and a plurality of first puddlers of fixedly connected with.

As a further description of the above technical solution: the liquid storage assembly comprises a liquid storage cylinder fixedly connected to the top of the filter press box, and the bottom end of the liquid storage cylinder is communicated with a first water outlet pipe.

As a further description of the above technical solution: the bottom end of the first water outlet pipe fixedly penetrates through the filter press cabinet and is fixedly connected with a switch valve, the outer surface of the switch valve is fixedly connected with an adjusting gear, and the other side of the gear shaft is meshed with one side of the adjusting gear.

As a further description of the above technical solution: the bottom of flexible frame and the top fixed connection of fixed plate, logical groove sets up to the inverted trapezoid form.

As a further description of the above technical solution: the hydraulic component comprises a hydraulic rod fixedly connected to one side of the filter press case, one end of the hydraulic rod is fixedly connected with a main pressing plate, and the two sides of the inner wall of the filter press case are rotatably connected with a first rotating plate.

As a further description of the above technical solution: the two sides of the first rotating plates are rotatably connected with second connecting rods, the other ends of the second connecting rods close to one side of the hydraulic rod are rotatably connected with the two sides of the main pressing plate, the two second connecting rods far away from one side of the hydraulic rod are rotatably connected with the same auxiliary pressing plate, and the top of the auxiliary pressing plate is slidably connected with the bottom of the fixing plate.

As a further description of the above technical solution: the top ends of the two connecting springs are fixedly connected with the top of the inner wall of the crushing barrel, and the top ends of the two expansion plates are rotatably connected with the top of the inner wall of the crushing barrel.

As a further description of the above technical solution: the bottom of vacuum chamber is provided with the linkage subassembly, the linkage subassembly includes two telescopic links of fixed connection in the vacuum chamber bottom, the same diaphragm of the equal fixedly connected with in bottom of two telescopic links.

As a further description of the above technical solution: the bottom end of the push rod penetrates through the vacuum box in a sliding mode and is fixedly connected with the top of the transverse plate, and the abutting spring is sleeved on the outer surface of the push rod.

As a further description of the above technical solution: the inside of crushing barrel rotates and is connected with two crushing rollers, and the front end of the crushing roller that is located on the left side rotates and runs through crushing barrel and fixedly connected with cam.

As a further description of the above technical solution: the outer surface of the cam is movably connected with the bottom of the transverse plate.

As a further description of the above technical solution: the aeration device comprises a gas-liquid mixer and a first circulating pump; the lower part of the first water washing reactor or the second water washing reactor is connected with the gas-liquid mixer through a liquid circulating pipe, and the first circulating pump is mounted on the liquid circulating pipe; the top of the first water washing reactor or the second water washing reactor is connected with the gas-liquid mixer through a gas circulating pipe; and the mixed liquid in the gas-liquid mixer is conveyed to the first water-washing reactor or the second water-washing reactor through a conveying pipe.

As a further description of the above technical solution: the bottom of the absorption tower is connected with the upper part of the absorption tower through a second circulating pipe, and a second circulating pump is fixedly connected to the second circulating pipe.

As a further description of the above technical solution: the inside of first washing reactor, second washing reactor and third washing reactor all is provided with the second (mixing) shaft, the second (mixing) shaft is provided with stirring vane, and the top of second (mixing) shaft passes through the shaft coupling and links to each other with agitator motor's main shaft.

As a further description of the above technical solution: and bases are arranged below the first water washing reactor, the second water washing reactor and the third water washing reactor.

As a further description of the above technical solution: the top of first washing reactor is provided with the filtrating inlet pipe, the bottom of third washing reactor is provided with removes hard discharging pipe.

Compared with the prior art, the invention has the following advantages and beneficial effects:

the fly ash treatment system can effectively separate water-soluble components in fly ash and carry out solid-liquid separation by matching the mixing feeding device, the first washing device, the first filter press, the first filter cake crusher, the second washing device, the second filter press, the second filter cake crusher, the third washing device, the third filter press and the hardness removal device, and can directly solidify calcium and magnesium ions in ash water and carry out solid-liquid separation with fly ash by introducing cement kiln tail gas containing a large amount of carbon dioxide into a washing process; meanwhile, the tail gas of the cement kiln can be utilized to the maximum extent, secondary filtration and solid-liquid separation are not needed, and the energy is saved and the environment is protected; the treatment efficiency is high, continuous automatic production can be realized, the labor intensity of workers is reduced, the labor environment of the workers is improved, and the health of the workers is protected; and the three-stage countercurrent washing mode is formed by mutual matching, so that water resources can be greatly saved, and the later-stage sewage treatment cost is reduced.

In particular, the amount of the solvent to be used,

compared with the prior art, the hardness removal device has a simple structure, and can be used for directly solidifying calcium and magnesium ions in ash water by introducing cement kiln tail gas containing a large amount of carbon dioxide into a washing process and utilizing aeration devices of a first washing reactor and a second washing reactor to carry out high-efficiency aeration during primary washing, and carrying out solid-liquid separation with fly ash, so that the hardness of the ash water can be effectively reduced, and the scaling and pollution blockage tendency of a gasified ash water system can be greatly relieved; meanwhile, the tail gas of the cement kiln can be utilized to the maximum extent, secondary filtration and solid-liquid separation are not needed, and the method is energy-saving and environment-friendly.

Compared with the prior art, the mixing and feeding device has the advantages that each fly ash is added into different small hoppers through mutual matching of the feeding pipe, the large hopper, the small hoppers, the double-shaft motor, the first stirring shaft, the driving assembly and the stirring assembly, the double-shaft motor drives the first stirring shaft to stir the materials in the small hoppers independently, and the primarily stirred materials enter the large hopper to be stirred by the stirring assembly, so that the stirring efficiency can be fully improved, and the problem of uneven mixing can be effectively reduced.

Compared with the prior art, the mixing and feeding device has the advantages that through the mutual matching of the feeding pipe, the driving motor, the auger shaft and the discharging pipe, the stirred materials in the large hopper fall into the feeding pipe, the driving motor drives the auger shaft to rotate so as to increase the feeding speed, and the mixing and processing efficiency of fly ash is improved.

Compared with the prior art, the washing device has the advantages that when the materials are fed, the extending shaft of the electric telescopic rod extends to drive the liquid level sensor to extend into the fourth washing reactor, the liquid level height in the fourth washing reactor is controlled by matching with the feed valve, the washing water is flushed into the washing cavity through the flushing pipe, the water spraying sleeve is extruded into the fourth washing reactor when the water pressure in the washing cavity is greater than the spring, the clear water enters the water spraying cavity through the washing cavity and is sprayed out to the surface of the liquid level sensor through the water spraying holes to wash the liquid level sensor, the water spraying can be sprayed back and forth by matching with the spring through the change of the water pressure, after the washing is finished, the washing water is stopped, the water spraying sleeve retracts into the fixing cover through the spring action, the liquid level sensor is driven to retract through the extending shaft of the electric telescopic rod, the surface of the liquid level sensor can be kept clean, the test is accurate, the manual maintenance frequency is greatly reduced.

Compared with the prior art, the water washing device provided by the invention can check whether the liquid level height in the fourth water washing reactor is consistent with the set height through the arranged observation window during manual inspection, and does not need to be stopped and opened, so that the shutdown point inspection is avoided, and the production efficiency is improved.

Compared with the prior art, the filter presses (the first filter press, the second filter press and the third filter press) drive the disc to move by setting the content of the filter residues in the filter screen bag, the filter residues in the filter screen bag provide certain gravity for the filter screen bag, and the filter screen bag drives the toothed plate to move by the gravity of the internal residues, so that the switch valve on the first water outlet pipe can be controlled, when the filter residues in the filter screen bag reach a saturation value, the switch valve is driven to be closed, the liquid leakage can be effectively avoided, and the device is simple and convenient to operate, strong in linkage and strong in practicability.

Compared with the prior art, the filter press has the advantages that the main pressing plate is driven to move through the movement of the hydraulic rod, the auxiliary pressing plate can synchronously move in opposite directions through the movement of the main pressing plate and the first rotating plate through the second connecting rod, the two sides of the filter screen bag can be conveniently extruded, and the rapid filter press is realized.

Compared with the prior art, the filter cake crusher (the first filter cake crusher and the second filter cake crusher) is connected with the second rotating plate through the connecting spring, the second rotating plate can be rotated by the washing filter cake through self gravity, so that the washing filter cake enters the crushing box to be crushed, the second rotating plate automatically resets at the moment, the residues generated after the washing filter cake is crushed are prevented from splashing, the protection effect is achieved, the piston plate is driven to move up and down through the rotation of the crushing roller through the arrangement of the dustproof assembly, an external water source enters the inside of the spray head, the dust can be fallen on the crushing roller, the use of an external power source is reduced, the energy-saving purpose is achieved, the integral dust falling effect can be improved, and the cleanliness of a fly ash treatment environment is effectively improved.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic structural diagram of a mixing and feeding device according to the present invention;

FIG. 3 is a top view of the mixing and feeding device of the present invention;

FIG. 4 is a view from the direction A-A in FIG. 3;

FIG. 5 is a schematic view of the overall structure of the water washing apparatus according to the present invention;

FIG. 6 is a sectional view of a liquid level detection assembly connecting structure of the water washing apparatus according to the present invention;

FIG. 7 is a schematic view of the connection structure of the electric telescopic rod, the first connecting rod and the liquid level sensor of the water washing device of the present invention;

FIG. 8 is a sectional view showing the internal structure of the fixing cover of the water washing device according to the present invention;

FIG. 9 is a sectional view showing the inner structure of the water spray casing of the washing apparatus according to the present invention;

FIG. 10 is a schematic view showing the overall internal structure of the filter press according to the present invention;

FIG. 11 is a front elevation view in longitudinal section showing the entire internal structure of the filter press according to the present invention;

FIG. 12 is an enlarged view at A in FIG. 10;

FIG. 13 is an enlarged view at B of FIG. 11;

FIG. 14 is an external view of the overall structure of the cake crusher of the present invention;

FIG. 15 is a front elevation view in longitudinal section of the overall internal structure of the cake crusher of the present invention;

FIG. 16 is a longitudinal sectional side view of the overall internal structure of the cake crusher of the present invention;

FIG. 17 is an enlarged view at C of FIG. 16;

FIG. 18 is a schematic view of the overall structure of the hardness removing device of the present invention.

In the figure: 1. a mixing and feeding device; 21. a first water washing device; 22. a second water washing device; 23. a third water washing device; 41. a first filter press; 42. a second filter press; 43. a third filter press; 51. a first filter cake crusher; 52. a second filter cake crusher; 31. a first counter-flow line; 32. a second counter-flow line; 7. a circulating booster pump; 8. a screw conveyor; 4020. a filtrate outlet; 5018 a filter cake powder outlet;

101. a feed pipe; 102. a large funnel; 103. a small funnel; 104. a dual-axis motor; 105. a first stirring shaft; 10501. a vertical axis; 10502. a screw shaft; 106. a drive motor; 107. a packing auger shaft; 108. a discharging pipe; 109. a support frame; 1010. positioning a plate; 1011. a material guide chute; 1012. a central shaft; 1013. a sun gear; 1014. an outer gear; 1015. a stirring rod; 1016. a first stirring rod;

201. a fourth water washing reactor; 202. a feed pipe; 203. a feed valve; 204. a discharge pipe; 205. a discharge valve; 206. a sludge pump; 207. sealing edges; 208. an observation window; 209. a fixed cover; 2010. an electric telescopic rod; 2011. a flush pipe; 2012. an inner sleeve; 2013. a first connecting rod; 2014. a liquid level sensor; 2015. a water flushing cavity; 2016. a water spraying sleeve; 2017. a spring; 2018. a step; 2019. a water spraying cavity; 2020. a water spray hole;

401. a filter press cabinet; 402. a fixing plate; 403. a slide bar; 404. a circular plate; 405. a support spring; 406. a filter screen bag; 407. a telescopic frame; 408. a through groove; 409. a gear shaft; 4010. a toothed plate; 4011. a liquid storage cylinder; 4012. a first water outlet pipe; 4013. an on-off valve; 4014. an adjusting gear; 4015. a hydraulic lever; 4016. a main pressure plate; 4017. a second connecting rod; 4018. an auxiliary pressing plate; 4019. a first rotation plate;

501. a crushing cylinder; 502. a second rotating plate; 503. a connecting spring; 504. a retractable plate; 505. a vacuum box; 506. a piston plate; 507. a water inlet pipe; 508. a second water outlet pipe; 509. a telescopic pipe; 5010. a spray head; 5011. a one-way valve; 5012. a telescopic rod; 5013. a transverse plate; 5014. a push rod; 5015. an abutment spring; 5016. a crushing roller; 5017. a cam;

601. a cement kiln tail gas tank; 602. a first fan; 603. a second fan; 604. a first water washing reactor; 605. a second water washing reactor; 606. a third water washing reactor; 607. an absorption tower; 608. a first gas delivery pipe; 609. a second gas delivery pipe; 6010. a transfusion tube; 6011. a third gas delivery pipe; 6012. a gas-liquid mixer; 6013. a first circulation pump; 6014. a liquid circulation pipe; 6015. a gas circulation pipe; 6016. a delivery pipe; 6017. A second circulation pipe; 6018. a second circulation pump; 6019. a second stirring shaft; 6020. a stirring blade; 6021. a stirring motor; 6022. a base; 6023. a liquid feed pipe; 6024. and (4) a hardness removal discharge pipe.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

Example 1:

as shown in fig. 1 to 18, a fly ash treatment system comprises a mixing and feeding device, a first water washing device, a first filter press, a first filter cake crusher, a second water washing device, a second filter press, a second filter cake crusher, a third water washing device and a third filter press which are arranged in sequence along the flow direction of fly ash solids;

the mixing and feeding device is used for mixing the fly ashes from different sources; the feeding pipe of the mixing and feeding device is communicated with the feeding pipe of the first water washing device through a pipeline;

a spiral conveyor (which can also be conveyed by powder conveying equipment/mode commonly used in the field) is also arranged on a pipeline between the feeding pipe of the mixing and feeding device and the feeding pipe of the first water washing device and used for conveying the mixed fly ash;

the discharge pipe of the second washing device is communicated with the liquid storage cylinder of the second filter press through a pipeline;

the third filter press is used for carrying out solid-liquid separation on a water-ash mixture flowing out of a discharge pipe of the third washing device to obtain a filter cake and filtrate, wherein the filter cake is transferred and conveyed to a fly ash solid recovery treatment process for treatment, one part of the filtrate flows back to a feed pipe of the second washing device through a second counter-flow pipeline, and the other part of the filtrate flows out of a filtrate discharge port to the hardness removal device;

Example 2:

as shown in fig. 1, a fly ash treatment system comprises a mixing and feeding device, a first water washing device, a first filter press, a first filter cake crusher, a second water washing device, a second filter press, a second filter cake crusher, a third water washing device and a third filter press which are arranged in sequence along the flow direction of fly ash solids;

a spiral conveyor is further arranged on a pipeline between the feeding pipe of the mixing and feeding device and the feeding pipe of the first washing device and is used for conveying the mixed fly ash;

the powder conveying equipment/method commonly used in the art can be used for conveying.

the second filter press is used for carrying out solid-liquid separation on the water-ash mixture flowing out of the discharge pipe of the second washing device to obtain a filter cake and filtrate, wherein the filter cake is transferred to the second filter cake crusher to crush the filter cake, a part of the filtrate flows back to the feed pipe of the first washing device through the first counter-current pipeline, and the other part of the filtrate flows out of the filtrate discharge port to the hardness removal device;

a filter cake powder outlet of the second filter cake crusher is communicated with a feed pipe of the third water washing device through a pipeline;

further, a filtrate feeding pipe of the hardness removal device is respectively communicated with the first filter press, the second filter press and the third filter press through pipelines and is used for removing hardness of filtrate by using carbon dioxide; a hardness removal discharge pipe of the hardness removal device is communicated to a filter, and the filter is used for carrying out solid-liquid separation on a solid-liquid mixture flowing out of the hardness removal device to obtain filter residues and filter liquid; so as to carry out further recycling treatment.

Furthermore, the first countercurrent pipeline and the second countercurrent pipeline are both provided with circulating booster pumps;

the feeding pipes of the first water washing device and the second water washing device are respectively communicated with a water replenishing pipeline and are used for replenishing water according to requirements; the feed pipe of the third washing device is also communicated with a clean water inlet pipeline and is used for adding water according to the requirement

Referring to fig. 2-4, the mixed feeding device comprises a feeding pipe, a plurality of supporting frames are fixedly connected to two sides of the feeding pipe along the length direction, a positioning plate is fixedly connected to the bottom of each supporting frame, the feeding pipe can be stably supported by the aid of the supporting frames, the positioning plates are convenient to fixedly mount the supporting frames, stable mounting of the feeding device is facilitated, a feeding mechanism is connected to the feeding pipe and comprises a driving motor fixedly connected to the side wall of the feeding pipe, an auger shaft is fixedly connected to the output end of the driving motor, penetrates through the feeding pipe and is rotatably connected with the inner wall of the feeding pipe, and a discharging pipe obliquely arranged penetrates through the bottom of one side, away from the driving motor, of the feeding pipe.

Further, the conveying pipe top runs through and the big funnel of fixedly connected with, the little funnel that a plurality of annular array of big funnel top fixedly connected with were arranged, the top of a plurality of little funnels all through connection has the baffle box that is used for leading-in flying dust, make things convenient for the staff to drop into the little funnel in proper order with the flying dust in different sources through setting up the baffle box, big funnel top fixedly connected with biax motor, little funnel top runs through and rotates and is connected with first (mixing) shaft, first (mixing) shaft is including running through little funnel and rotating the vertical axis of being connected with little funnel, the vertical axis bottom is connected with the screw axis, the screw axis is located inside little funnel, the installation of first (mixing) shaft of being convenient for is set up to the vertical axis, can stir flying dust in the little funnel when it rotates, so that flying dust follow-up handles.

Further, the output of one of them side of biax motor is connected with and is used for driving the synchronous pivoted drive assembly of many first (mixing) shafts, drive assembly includes the center pin that corresponds output fixed connection with biax motor, the fixed central gear that has cup jointed of center pin surface, many vertical axis surface all fixed cup joints the outer gear with central gear engaged with, biax motor opposite side output is connected with the stirring subassembly that is used for stirring material in the big funnel, stirring subassembly includes the puddler that corresponds output fixed connection with biax motor, the puddler runs through and extends to in the big funnel and a plurality of first puddlers of fixedly connected with, it rotates to drive first puddler through the puddler after the biax motor starts, first puddler drives each flying dust misce.

When the mixing and feeding device is used, the double-shaft motor and the driving motor are started, fly ash from different sources is put into different guide chutes, the double-shaft motor drives the central gear to rotate through the central shaft, the central gear drives each first stirring shaft to rotate through the outer gear meshed with the central gear, and at the moment, the spiral shaft rotates to stir the fly ash in the small hopper.

In the material entering big funnel after being tentatively stirred in the little funnel, biax motor drives puddler and first stirring rod and rotates the fly ash that gets into each different sources in the big funnel and stir, make it mix, the material after mixing falls into in the pay-off pipe, driving motor drives auger shaft and rotates, auger shaft in the rotation will fall into the promotion of the material in the pay-off pipe, make the material discharge through unloading pipe, can continuously send out the material along with driving motor's continuation work, can realize the continuous mixed pay-off to different sources fly ash like this, the improvement is to the treatment effeciency of fly ash.

Referring to fig. 5 to 9, the first, second and third water washing devices according to the present invention have the same structure, and each of the first, second and third water washing devices includes a fourth water washing reactor in the fly ash water washing system; a feeding pipe fixedly connected to the upper end of the fourth washing reactor and used for adding fly ash and rinsing water; a discharge pipe fixedly connected to the lower end of the fourth water washing reactor and used for discharging slurry; a sludge pump fixedly connected with one end of the discharge pipe, which is far away from the fourth water washing reactor, and used for increasing the discharge pressure; the setting is used for controlling the valve structure of feeding, ejection of compact opportunity at inlet pipe, ejection of compact outer wall, and valve structure includes feed valve, bleeder valve, and feed valve, bleeder valve fixed connection are at feed pipe outer wall and ejection of compact outer wall respectively, are electric control valve and control the part control in by automatic system through feed valve and bleeder valve, can control the business turn over material opportunity for the automation can be realized.

The setting is used for observing the visual structure of the inside washing condition at fourth washing reactor antetheca, and visual structure is the observation window, and the observation window is inlayed at fourth washing reactor antetheca, and is sealed through the banding between observation window and the fourth washing reactor, can be the same with the setting value through the current liquid level height of observation window inspection when artifical point is examined, has avoided stopping in the past and has examined the influence production progress that causes.

The liquid level detection assembly is fixedly connected to the side wall of the fourth washing reactor and used for detecting the height of the inner feeding, the liquid level detection assembly comprises a fixed cover, an inner sleeve, an electric telescopic rod, a first connecting rod and a liquid level sensor, a round hole is formed in the side wall of the fourth washing reactor and close to the upper end of the side wall of the fourth washing reactor, the fixed cover is fixedly connected to the side wall of the fourth washing reactor and corresponds to the round hole, the inner sleeve is fixedly connected to the inner side wall of one end of the fixed cover, which is far away from the fourth washing reactor, of the inner sleeve, the end part, which is far away from the fourth washing reactor, of the inner sleeve is flush with the inner side wall of the fourth washing reactor, the electric telescopic rod is fixedly connected to the end part, which is far away from the fourth washing reactor, of the electric telescopic rod extending shaft penetrates through the side wall of the fixed cover and extends into the inner sleeve, the first connecting rod and the liquid level sensor are sequentially and fixedly connected to the end part, which extends into the electric telescopic rod extending shaft from left to right, first connecting rod, level sensor outer wall all with interior sleeve pipe inside wall sliding connection, during the feeding, do through electric telescopic handle projecting shaft and stretch out the action, drive level sensor and stretch out from interior sleeve pipe, detect liquid level height in the fourth washing reactor.

The cleaning structure is arranged on the liquid level detection assembly and used for cleaning the liquid level detection assembly, the cleaning structure comprises a water spraying sleeve, a spring and a flushing pipe, a flushing cavity communicated with the interior of a fourth water washing reactor is arranged between the outer wall of an inner sleeve and the inner wall of a fixed cover, the flushing pipe is fixedly connected to the outer wall of the fixed cover and close to one side of an electric telescopic rod, the flushing pipe is communicated with the flushing cavity, the water spraying sleeve is slidably connected to the inner wall of the flushing cavity and is slidably connected with an inner sleeve, a step is arranged on the outer wall of one end, away from the fourth water washing reactor, of the water spraying sleeve, the spring is sleeved on the outer wall of the water spraying sleeve and is positioned between the step and the outer wall of the fourth water washing reactor, a water spraying cavity is arranged on the inner wall, away from the fourth water washing reactor, a water spraying hole is formed in the inner wall, which is in contact with the inner sleeve, the water spraying hole is communicated with the water spraying cavity, after the control part flushes cleaning water into the flushing cavity through the flushing pipe, water pressure is greater than spring force, make the water spout cover stretch out from the bath chamber, the washing water gets into the hole for water spraying from the water spout chamber, and spray and wash on the level sensor surface, when washing water is spout from the hole for water spraying, water pressure descends rapidly and is less than spring force, make the water spout cover return by the spring top again, water pressure rises again when the top returns to have the hole for water spraying to be stopped up by interior sleeve pipe outer wall and no longer spray water, the water spout cover is ejecting once more, it is reciprocal so, make hole for water spraying spun water along level sensor length direction back and forth movement, wash more thoroughly.

The washing device of the invention can control the feeding and discharging time through the feeding valve and the discharging valve which are both electric control valves and are controlled by the control part in an automatic system, so that the automation is realized, whether the current liquid level height is the same as the set value or not can be checked through the observation window during manual point inspection, the influence on the production progress caused by the conventional stop point inspection is avoided, during feeding, the extension shaft of the electric telescopic rod is used for extending out to drive the liquid level sensor to extend out from the inner sleeve pipe to detect the liquid level height in the fourth washing reactor, after discharging, the control part flushes the washing water into the washing cavity through the flushing pipe, the water pressure is larger than the spring force, so that the water spraying sleeve extends out from the washing cavity, the washing water enters the water spraying hole from the water spraying cavity and is sprayed on the surface of the liquid level sensor for washing, when the washing water is sprayed out from the water spraying hole, the water pressure is rapidly reduced and is smaller than the spring force, make the water spray cover to be pushed back by the spring again, water pressure rises again when pushing back to have the hole for water spraying to be stopped up by interior sleeve pipe outer wall and no longer spraying water, and the water spray cover is ejecting again, and is reciprocal so for hole for water spraying spun water is along level sensor length direction back and forth motion, washs more thoroughly.

Referring to fig. 10-13, the first filter press, the second filter press and the third filter press are all the same, and each of the first filter press, the second filter press and the third filter press comprises a filter press cabinet, the top of the filter press cabinet is provided with a liquid storage assembly, the interior of the filter press cabinet is sequentially provided with an adjusting assembly, a filtrate assembly and a liquid pressing assembly from the top to the bottom, the filtrate assembly comprises a fixed plate fixedly connected to the interior of the filter press cabinet, two sides of the top of the fixed plate are fixedly connected with slide bars, the outer surfaces of the two slide bars are slidably connected with the same circular plate and are provided with slide bars for controlling the direction of the circular plate to move up and down, the outer surfaces of the two slide bars are respectively sleeved with a supporting spring, the interior of the circular plate is fixedly connected with a filter screen bag, the filter screen bag is arranged at the central position of the circular plate, the bottom of the circular plate is fixedly connected with a telescopic frame at the periphery of the filter screen bag, the flexible frame is around flowing to the fixed plate top in order to prevent the liquid of screen bag, the bottom of flexible frame and the top fixed connection of fixed plate, logical groove has been seted up to the inside of fixed plate, it sets up on the fixed plate of flexible frame inside to lead to the groove, it sets to the inverted trapezoid form to lead to the groove, it is for the convenience of the flexible frame upflow some filtrate can pass through the fixed plate to set up logical groove, the adjusting part is including rotating the gear shaft of connecting at filter-press quick-witted incasement portion, one side meshing of gear shaft surface has the pinion rack, the pinion rack passes through the inside of slider slip at filter-press machine case, the top fixed connection of the bottom plectane of pinion rack.

Deposit the liquid subassembly and include the liquid section of thick bamboo of depositing of fixed connection at the pressure filter roof portion, the bottom intercommunication of depositing the liquid section of thick bamboo has first outlet pipe, the bottom mounting of first outlet pipe runs through pressure filter case and fixedly connected with ooff valve, the external fixed surface of ooff valve is connected with adjusting gear, the opposite side of gear shaft and one side meshing of adjusting gear, the flow of first outlet pipe can be controlled after the ooff valve rotates, the ooff valve rotates the back, first outlet pipe is closed completely.

The hydraulic component comprises a hydraulic rod fixedly connected to one side of the filter press case, the hydraulic rod is connected with an external power source and a control switch, one end of the hydraulic rod is fixedly connected with a main pressing plate, the two sides of the inner wall of the filter press case are all rotatably connected with first rotating plates, the two sides of the two first rotating plates are all rotatably connected with second connecting rods, the other ends of the two second connecting rods close to one side of the hydraulic rod are all rotatably connected with the two sides of the main pressing plate, the two second connecting rods far away from one side of the hydraulic rod are rotatably connected with the same auxiliary pressing plate, the top sliding connection of the auxiliary pressing plate and the bottom of a fixed plate are both kept consistent with each other, and the auxiliary pressing plate and the main pressing plate are symmetrically distributed on the two sides of the filter screen bag.

According to the filter press, the fly ash treatment liquid (water-ash mixture) enters the filter screen bag from the inside of the liquid storage cylinder through the first water outlet pipe, the filter screen bag filters the fly ash treatment liquid, filtered residues remain in the filter screen bag, the filter screen bag has a certain weight, when the filter screen bag has gravity, the circular plate can drive the circular plate to synchronously move downwards, the circular plate can extrude the supporting spring to deform after moving downwards, the circular plate can drive the toothed plate to synchronously move downwards, the toothed plate can be meshed with the gear shaft to rotate after moving downwards, the gear shaft is meshed with the adjusting gear to rotate, the adjusting gear is fixed on the switch valve, the switch valve rotates, the flow of the first water outlet pipe can be controlled after the switch valve rotates, the switch valve is completely closed at the moment, the hydraulic rod is started at the moment, the hydraulic rod extends to push the main pressure plate to move, the main pressure plate can pass through the second connecting rod after moving to enable the first rotating plate to rotate, the first rotating plate rotates to pass through the second connecting rod on the other side, and the auxiliary pressure plate synchronously moves in opposite directions, so that the filter screen bag filled with residues can be extruded; and (4) after filter pressing, enabling the filtrate to flow out from a filtrate discharge port, taking out the filter cake from the filter screen bag, and transferring and conveying.

Referring to fig. 14-17, the first filter cake crusher and the second filter cake crusher are identical, the first filter cake crusher and the second filter cake crusher both comprise a crushing cylinder, splash-proof assemblies are arranged on both sides of the inside of the crushing cylinder, the splash-proof assemblies both comprise second rotating plates rotatably connected to both sides of the inner wall of the crushing cylinder, connecting springs are fixedly connected to the tops of the second rotating plates, the top ends of the two connecting springs are fixedly connected to the top of the inner wall of the crushing cylinder, the two second rotating plates are supported by the connecting springs to be in an inclined state, the connecting springs are arranged, the second rotating plates can reset automatically after rotation, telescopic plates are rotatably connected to the tops of the two second rotating plates, filter cakes are arranged, the filter cakes are prevented from being influenced by falling water washing, the top ends of the two telescopic plates are rotatably connected to the top of the inner wall of the crushing cylinder, a dustproof component is arranged outside the crushing barrel, the dustproof component comprises a vacuum box fixedly connected to the front side of the crushing barrel, a piston plate is connected to the inside of the vacuum box in a sliding mode, a push rod is fixedly connected to the bottom end of the piston plate, the working principle of the vacuum box, the piston plate and the push rod is consistent with that of a needle tube, a water inlet pipe is communicated with the right side of the vacuum box and is connected with an external water source, a second water outlet pipe is communicated with the top of the vacuum box, the other end of the second water outlet pipe extends into the crushing barrel and is communicated with two telescopic pipes, the telescopic pipes are arranged to be connected with a spray head, the spray head can always keep being communicated with the second water outlet pipe after rotating along with the second rotating plate, the other ends of the two telescopic pipes are communicated with the spray head, the two spray heads are fixedly connected to the bottom of the second rotating plate, one-way valves are arranged on the water inlet pipe and the second water outlet pipe, and the one-way valves are arranged on the water inlet pipe and the second water outlet pipe, used for controlling the direction of the water flow in the water inlet pipe and the second water outlet pipe.

The bottom of vacuum box is provided with the linkage subassembly, the linkage subassembly includes two telescopic links of fixed connection in the vacuum box bottom portion, the same diaphragm of the equal fixedly connected with in bottom of two telescopic links, set up the telescopic link, the direction that the control diaphragm reciprocated of being convenient for, the bottom of catch bar slide run through the vacuum box and with the top fixed connection of diaphragm, the butt spring has been cup jointed to the surface of catch bar, the butt spring setting is between the top of diaphragm and the bottom of vacuum box.

The inside of broken section of thick bamboo rotates and is connected with two crushing rollers, and two crushing rollers pass through external power source and rotate to realize the breakage, the front end that is located left crushing roller rotates and runs through broken section of thick bamboo and fixedly connected with cam, the surface of cam and the bottom swing joint of diaphragm, the cam need set up the bottom at the diaphragm.

The filter cake crusher of the invention, when the water washing filter cake left after fly ash treatment needs to be crushed, the water inlet pipe is connected with an external water source, then the single (water washing) filter cake is sequentially put into the crushing cylinder, at the moment, the water washing filter cake drives the second rotating plate to rotate by the self gravity, after the second rotating plate rotates, the water washing filter cake will slide to the inside of the crushing cylinder, at the moment, the second rotating plate will reset under the action of the connecting spring, the water washing filter cake falling to the inside of the crushing cylinder will be crushed by the crushing roller, thereby certain dust and residue will be generated, the splashed residue will be blocked by the second rotating plate, thereby the residue cannot fly out from the top of the crushing cylinder, the crushing roller can drive the cam to rotate while rotating, the minor axis of the cam will contact with the transverse plate first, at the moment, the restoring force of the abutting spring on the push rod, the transverse plate is pushed to move downwards to be in contact with the outer surface of the cam, the piston plate can be enabled to move downwards through the push rod after the transverse plate moves, the pressure inside the vacuum box is reduced at the moment, an external water source can be pumped into the vacuum box through the water inlet pipe, after the cam continues to rotate, the long shaft of the cam is in contact with the transverse plate, the transverse plate can be pushed to move upwards, the transverse plate moves upwards through the push rod, the piston plate moves upwards, the abutting spring on the push rod is in a compression state at the moment, the piston plate moves upwards to extrude the water source inside the vacuum box, the water source can enter the spray head through the second water outlet pipe and the two telescopic pipes, and dust falling treatment is carried out on dust generated during crushing through the spray head; and discharging the crushed filter cake powder from a filter cake powder outlet.

Referring to fig. 18, the hardness removal device of the present invention comprises a cement kiln tail gas tank, a first fan, a second fan, a first water washing reactor, a second water washing reactor, a third water washing reactor and an absorption tower; the cement kiln tail gas tank is connected with the first fan through a pipeline, and the first fan conveys gas in the cement kiln tail gas tank to the first washing reactor and the second washing reactor respectively through pipelines; the first water washing reactor and the second water washing reactor are both provided with aeration devices; the upper part of the first water washing reactor is connected with the second water washing reactor through a first gas conveying pipe; the upper part of the second water washing reactor is connected with the third water washing reactor through a second gas conveying pipe, and the bottom of the second water washing reactor is connected with the third water washing reactor through a liquid conveying pipe; a third gas pipe is arranged at the top of the third water washing reactor, and the third water washing reactor is connected with the lower part of the absorption tower through the third gas pipe; the top of the absorption tower is connected with the second fan through a pipeline, and the second fan conveys tail gas generated by the absorption tower to the atmosphere through a pipeline. The aeration device comprises a gas-liquid mixer and a first circulating pump; the lower part of the first water washing reactor or the second water washing reactor is connected with the gas-liquid mixer through a liquid circulating pipe, and the first circulating pump is mounted on the liquid circulating pipe; the top of the first water washing reactor or the second water washing reactor is connected with the gas-liquid mixer through a gas circulating pipe; and the mixed liquid in the gas-liquid mixer is conveyed to the first water-washing reactor or the second water-washing reactor through a conveying pipe. The bottom of the absorption tower is connected with the upper part of the absorption tower through a second circulating pipe, and a second circulating pump is fixedly connected to the second circulating pipe.

According to the invention, the cement kiln tail gas containing a large amount of carbon dioxide is introduced into a water washing process, and the aeration devices of the first water washing reactor and the second water washing reactor are utilized for efficient aeration during primary water washing, so that calcium and magnesium ions in ash water are directly solidified and are subjected to solid-liquid separation together with fly ash, the hardness of the ash water can be effectively reduced, and the scaling and pollution blocking tendency of a gasified ash water system is greatly reduced; meanwhile, the tail gas of the cement kiln can be utilized to the maximum extent, secondary filtration and solid-liquid separation are not needed, and the method is energy-saving and environment-friendly.

Furthermore, the inside of first washing reactor, second washing reactor and third washing reactor all is provided with the second (mixing) shaft, the second (mixing) shaft is provided with stirring vane, and the top of second (mixing) shaft passes through the shaft coupling and links to each other with agitator motor's main shaft. The grey water can be fully stirred to achieve the purpose of fully reacting carbon dioxide in the first water-washing reactor, the second water-washing reactor and the third water-washing reactor.

Furthermore, bases are arranged below the first water washing reactor, the second water washing reactor and the third water washing reactor.

Further, the top of first washing reactor is provided with the filtrating inlet pipe, the bottom of third washing reactor is provided with except that hard discharging pipe.

Unless otherwise specified, in the present invention, if there are orientations or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientations or positional relationships shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

Claims

1. A fly ash treatment system, characterized by: the device comprises a mixing feeding device (1), a first washing device (21), a first filter press (41), a first filter cake crusher (51), a second washing device (22), a second filter press (42), a second filter cake crusher (52), a third washing device (23) and a third filter press (43) which are sequentially arranged along the flowing direction of the fly ash solid;

the mixing and feeding device (1) is used for mixing fly ash from different sources; the blanking pipe (108) of the mixing and feeding device (1) is communicated with the feeding pipe (202) of the first water washing device (21) through a pipeline;

a spiral conveyor (8) is further arranged on a pipeline between the blanking pipe (108) of the mixing and feeding device (1) and the feeding pipe (202) of the first washing device (21) and is used for conveying the mixed fly ash;

the discharge pipe (204) of the first water washing device (21) is communicated with the liquid storage cylinder (4011) of the first filter press (41) through a pipeline;

the first filter press (41) is used for carrying out solid-liquid separation on the water-ash mixture flowing out of the discharge pipe (204) of the first water washing device (21) to obtain a filter cake and filtrate, wherein the filter cake is transferred to the first filter cake crusher (51) to be crushed, and the filtrate flows out of the filtrate discharge hole (4020) to the hardness removal device (6);

a filter cake powder outlet (5018) of the first filter cake crusher (51) is communicated with a feeding pipe (202) of the second water washing device (22) through a pipeline;

a spiral conveyor (8) is further arranged on a pipeline between a filter cake powder outlet (5018) of the first filter cake crusher (51) and the feeding pipe (202) of the second water washing device (22) and is used for conveying filter cake powder crushed by the first filter cake crusher (51);

a discharge pipe (204) of the second water washing device (22) is communicated with a liquid storage cylinder (4011) of the second filter press (42) through a pipeline;

the second filter press (42) is used for performing solid-liquid separation on the water-ash mixture flowing out of the discharge pipe (204) of the second water washing device (22) to obtain a filter cake and a filtrate, wherein the filter cake is transferred to the second filter cake crusher (52) to crush the filter cake, a part of the filtrate flows back to the feed pipe (202) of the first water washing device (21) through the first counter-current pipeline (31), and the other part of the filtrate flows out of the filtrate discharge port (4020) to the hardness removal device (6);

a filter cake powder outlet (5018) of the second filter cake crusher (52) is communicated with a feeding pipe (202) of the third water washing device (23) through a pipeline;

a spiral conveyor (8) is further arranged on a pipeline between a filter cake powder outlet (5018) of the second filter cake crusher (52) and a feeding pipe (202) of the third water washing device (23) and is used for conveying filter cake powder crushed by the second filter cake crusher (52);

a discharge pipe (204) of the third water washing device (23) is communicated with a liquid storage cylinder (4011) of a third filter press (43) through a pipeline;

the third filter press (43) is used for performing solid-liquid separation on a water-ash mixture flowing out of a discharge pipe (204) of the third washing device (23) to obtain a filter cake and a filtrate, wherein the filter cake is transferred and conveyed to a fly ash solid recovery treatment process for treatment, a part of the filtrate flows back to a feed pipe (202) of the second washing device (22) through a second counter-flow pipeline (32), and the other part of the filtrate flows out to the hardness removal device (6) through a filtrate discharge port (4020);

a filtrate feed pipe (6023) of the hardness removal device (6) is respectively communicated with the first filter press (41), the second filter press (42) and the third filter press (43) through pipelines and is used for removing hardness of filtrate by using carbon dioxide; a hardness removing discharge pipe (6024) of the hardness removing device (6) is communicated to a filter (9), and the filter (9) is used for carrying out solid-liquid separation on a solid-liquid mixture flowing out of the hardness removing device (6) to obtain filter residue and filtrate;

the first countercurrent pipeline (31) and the second countercurrent pipeline (32) are both provided with a circulating booster pump (7);

the feeding pipes (202) of the first water washing device (21) and the second water washing device (22) are respectively communicated with a water replenishing pipeline and are used for replenishing water according to requirements; the feeding pipe (202) of the third water washing device (23) is also communicated with a clean water inlet pipeline and is used for adding water according to the requirement.

2. A fly ash treatment system according to claim 1, wherein:

the mixing and feeding device (1) comprises a feeding pipe (101), a feeding mechanism is connected onto the feeding pipe (101), a large funnel (102) penetrates through and is fixedly connected to the top of the feeding pipe (101), a plurality of small funnels (103) which are distributed in an annular array mode are fixedly connected to the top of the large funnel (102), a double-shaft motor (104) is fixedly connected to the top of the large funnel (102), a first stirring shaft (105) penetrates through and is rotatably connected to the top of the small funnel (103), a driving assembly used for driving a plurality of first stirring shafts (105) to rotate synchronously is connected to an output end of one side of the double-shaft motor (104), and a stirring assembly used for stirring materials in the large funnel (102) is connected to an output end of the other side of the double-shaft motor (104);

the feeding mechanism comprises a driving motor (106) fixedly connected to the side wall of the feeding pipe (101), an auger shaft (107) is fixedly connected to the output end of the driving motor (106), and the auger shaft (107) penetrates through the feeding pipe (101) and is rotatably connected with the inner wall of the feeding pipe (101);

the bottom of one side, away from the driving motor (106), of the feeding pipe (101) penetrates through and is fixedly connected with a discharging pipe (108) which is obliquely arranged;

the first water washing device (21), the second water washing device (22) and the third water washing device (23) comprise fourth water washing reactors (201) located in a fly ash water washing system;

a feeding pipe (202) fixedly connected to the upper end of the fourth water washing reactor (201) and used for adding fly ash and rinsing water;

a discharge pipe (204) fixedly connected to the lower end of the fourth water washing reactor (201) and used for discharging slurry;

a sludge pump (206) which is fixedly connected with one end of the discharge pipe (204) far away from the fourth water washing reactor (201) and is used for increasing the discharge pressure;

the valve structures are arranged on the outer walls of the feeding pipe (202) and the discharging pipe (204) and are used for controlling feeding and discharging time;

a visual structure which is arranged on the front wall of the fourth water washing reactor (201) and is used for observing the internal water washing condition;

the liquid level detection assembly is fixedly connected to the side wall of the fourth water washing reactor (201) and used for detecting the height of the internal feeding material;

the valve structure comprises a feed valve (203) and a discharge valve (205), wherein the feed valve (203) and the discharge valve (205) are respectively and fixedly connected to the outer wall of the feed pipe (202) and the outer wall of the discharge pipe (204);

the visual structure is an observation window (208), the observation window (208) is embedded in the front wall of the fourth water washing reactor (201), and the observation window (208) and the fourth water washing reactor (201) are sealed through a sealing edge (207);

the liquid level detection assembly comprises a fixed cover (209), an inner sleeve (2012), an electric telescopic rod (2010), a first connecting rod (2013) and a liquid level sensor (2014), a round hole is arranged on the side wall of the fourth water washing reactor (201) and close to the upper end, the fixed cover (209) is fixedly connected with the side wall of the fourth water washing reactor (201) and corresponds to the round hole, the inner sleeve (2012) is fixedly connected with the inner side wall of one end of the fixed cover (209) far away from the fourth water-washing reactor (201), the end part of the inner sleeve (2012) far away from the fourth water-washing reactor (201) is flush with the inner side wall of the fourth water-washing reactor (201), the electric telescopic rod (2010) is fixedly connected to the end part of the fixed cover (209) far away from the fourth water washing reactor (201), the outer wall of the extending shaft of the electric telescopic rod (2010) penetrates through the side wall of the fixed cover (209) and extends into the inner sleeve (2012);

the first connecting rod (2013) and the liquid level sensor (2014) are sequentially and fixedly connected to the end part, extending out of the shaft, of the electric telescopic rod (2010) and extending into the inner sleeve (2012), and the outer walls of the first connecting rod (2013) and the liquid level sensor (2014) are in sliding connection with the inner side wall of the inner sleeve (2012);

the cleaning structure comprises a water spraying sleeve (2016), a spring (2017) and a water spraying pipe (2011), a water spraying cavity (2011) which is communicated with the inside of the fourth water washing reactor (201) is arranged between the outer wall of the inner sleeve (2012) and the inner side wall of the fixed cover (209), the water spraying pipe (2011) is fixedly connected to the outer wall of the fixed cover (209) and close to one side of the electric telescopic rod (2010), the water spraying pipe (2011) is communicated with the water spraying cavity (2015), the water spraying sleeve (2016) is slidably connected to the inner side wall of the water spraying cavity (2015) and is slidably connected with the inner sleeve (2012), a step (2018) is arranged on the outer wall of one end of the water spraying sleeve (2016) far away from the fourth water washing reactor (201), the water spraying sleeve (2017) is arranged on the outer wall of the water spraying sleeve (2016) and is located between the step (2018) and the outer wall of the fourth water washing reactor (201), a water spraying sleeve (2016) far away from the end of the fourth water washing reactor (201) is provided with a water spraying cavity (2019), the inner side wall of the water spraying sleeve (2016) in contact with the inner sleeve (2012) is provided with a water spraying hole (2020), and the water spraying hole (2020) is communicated with a water spraying cavity (2019);

the filter press comprises a first filter press machine box (41), a second filter press machine (42) and a third filter press machine (43) which all comprise filter press machine boxes (401), wherein liquid storage assemblies are arranged at the tops of the filter press machine boxes (401), adjusting assemblies, filtrate assemblies and hydraulic assemblies are sequentially arranged from the tops to the bottoms of the filter press machine boxes (401), each filtrate assembly comprises a fixed plate (402) fixedly connected to the inside of each filter press machine box (401), slide rods (403) are fixedly connected to the two sides of the top of each fixed plate (402), the outer surfaces of the two slide rods (403) are slidably connected with a same circular plate (404), supporting springs (405) are sleeved on the outer surfaces of the two slide rods (403), filter mesh bags (406) are fixedly connected to the inside of each circular plate (404), and telescopic frames (407) are fixedly connected to the peripheries of the bottom of each circular plate (404) and located on the filter mesh bags (406), a through groove (408) is formed in the fixing plate (402), the adjusting assembly comprises a gear shaft (409) which is rotatably connected to the inside of the filter press cabinet (401), one side of the outer surface of the gear shaft (409) is meshed with a toothed plate (4010), and the top of a circular plate (404) at the bottom end of the toothed plate (4010) is fixedly connected;

the first filter cake crusher (51) and the second filter cake crusher (52) both comprise a crushing barrel (501), both sides of the inside of the crushing barrel (501) are provided with splash-proof components, the splash-proof components comprise second rotating plates (502) which are rotatably connected to both sides of the inner wall of the crushing barrel (501), the top of each second rotating plate (502) is fixedly connected with a connecting spring (503), the top of each second rotating plate (502) is rotatably connected with a telescopic plate (504), the outside of the crushing barrel (501) is provided with a dustproof component, the dustproof component comprises a vacuum box (505) which is fixedly connected to the front side of the crushing barrel (501), the inside of the vacuum box (505) is slidably connected with a piston plate (506), the bottom of the piston plate (506) is fixedly connected with a push rod (5014), the right side of the vacuum box (505) is communicated with a water inlet pipe (507), the top of the vacuum box (505) is communicated with a second water outlet pipe (508), the other end of the second water outlet pipe (508) extends into the crushing barrel (501) and is communicated with two telescopic pipes (509), the other ends of the two telescopic pipes (509) are both communicated with nozzles (5010), the two nozzles (5010) are both fixedly connected to the bottom of the second rotating plate (502), and the water inlet pipe (507) and the second water outlet pipe (508) are both provided with one-way valves (5011);

the hardness removing device (6) comprises a cement kiln tail gas tank (601), a first fan (602), a second fan (603), a first water washing reactor (604), a second water washing reactor (605), a third water washing reactor (606) and an absorption tower (607); the cement kiln tail gas tank (601) is connected with the first fan (602) through a pipeline, and the first fan (602) respectively conveys gas in the cement kiln tail gas tank (601) to the first water washing reactor (604) and the second water washing reactor (605) through pipelines; the first water washing reactor (604) and the second water washing reactor (605) are both provided with aeration devices; the upper part of the first water washing reactor (604) is connected with the second water washing reactor (605) through a first gas conveying pipe (608); the upper part of the second water washing reactor (605) is connected with the third water washing reactor (606) through a second gas conveying pipe (609), and the bottom of the second water washing reactor (605) is connected with the third water washing reactor (606) through a liquid conveying pipe (6010); a third gas conveying pipe (6011) is arranged at the top of the third water washing reactor (606), and the third water washing reactor (606) is connected with the lower part of the absorption tower (607) through the third gas conveying pipe (6011); the top of the absorption tower (607) is connected with the second fan (603) through a pipeline, and the second fan (603) conveys the tail gas generated by the absorption tower (607) to the atmosphere through a pipeline.

3. A fly ash treatment system according to claim 2, wherein: a plurality of supporting frames (109) are fixedly connected to two sides of the feeding pipe (101) along the length direction, and a positioning plate (1010) is fixedly connected to the bottom of each supporting frame (109);

the tops of the small hoppers (103) are all connected with a material guide groove (1011) for guiding fly ash in a penetrating way;

the stirring assembly comprises a stirring rod (1015) fixedly connected with the corresponding output end of the double-shaft motor (104), and the stirring rod (1015) penetrates through the large hopper (102) and is fixedly connected with a plurality of first stirring rods (1016).

4. A fly ash treatment system according to claim 2, wherein: the first stirring shaft (105) comprises a vertical shaft (10501) which penetrates through the small funnel (103) and is rotationally connected with the small funnel (103), the bottom of the vertical shaft (10501) is connected with a spiral shaft (10502), and the spiral shaft (10502) is positioned inside the small funnel (103);

the driving assembly comprises a central shaft (1012) fixedly connected with the corresponding output end of the double-shaft motor (104), a central gear (1013) is fixedly sleeved on the outer surface of the central shaft (1012), and outer gears (1014) meshed with the central gear (1013) are fixedly sleeved on the outer surfaces of the vertical shafts (10501).

5. A fly ash treatment system according to claim 2, wherein: the liquid storage assembly comprises a liquid storage cylinder (4011) fixedly connected to the top of the filter press cabinet (401), and the bottom end of the liquid storage cylinder (4011) is communicated with a first water outlet pipe (4012);

the bottom end of the first water outlet pipe (4012) fixedly penetrates through the filter press cabinet (401) and is fixedly connected with a switch valve (4013), the outer surface of the switch valve (4013) is fixedly connected with an adjusting gear (4014), and the other side of the gear shaft (409) is meshed with one side of the adjusting gear (4014);

the bottom end of the telescopic frame (407) is fixedly connected with the top of the fixing plate (402), and the through groove (408) is arranged into a reverse trapezoid.

6. A fly ash treatment system according to claim 2, wherein: the hydraulic component comprises a hydraulic rod (4015) fixedly connected to one side of a filter press case (401), one end of the hydraulic rod (4015) is fixedly connected with a main pressure plate (4016), and two sides of the inner wall of the filter press case (401) are rotatably connected with first rotating plates (4019);

two the both sides of first rotation board (4019) are all rotated and are connected with second connecting rod (4017), are close to two of hydraulic stem (4015) one side the other end of second connecting rod (4017) all rotates with the both sides of main clamp plate (4016) and is connected, keeps away from two of hydraulic stem (4015) one side second connecting rod (4017) rotate and are connected with same supplementary clamp plate (4018), the top sliding connection of supplementary clamp plate (4018) and the bottom of fixed plate (402).

7. A fly ash treatment system according to claim 2, wherein: the top ends of the two connecting springs (503) are fixedly connected with the top of the inner wall of the crushing barrel (501), and the top ends of the two expansion plates (504) are rotatably connected with the top of the inner wall of the crushing barrel (501);

the bottom end of the vacuum box (505) is provided with a linkage assembly, the linkage assembly comprises two telescopic rods (5012) fixedly connected to the bottom of the vacuum box (505), and the bottom ends of the two telescopic rods (5012) are fixedly connected with the same transverse plate (5013);

the bottom end of the push rod (5014) penetrates through the vacuum box (505) in a sliding mode and is fixedly connected with the top of the transverse plate (5013), and the outer surface of the push rod (5014) is sleeved with an abutting spring (5015).

8. A fly ash treatment system according to claim 2, wherein: two crushing rollers (5016) are rotatably connected inside the crushing cylinder (501), and the front end of the crushing roller (5016) positioned on the left side rotatably penetrates through the crushing cylinder (501) and is fixedly connected with a cam (5017);

the outer surface of the cam (5017) is movably connected with the bottom of the transverse plate (5013).

9. A fly ash treatment system according to claim 2, wherein: the aeration device comprises a gas-liquid mixer (6012) and a first circulating pump (6013); the lower part of the first water washing reactor (604) or the second water washing reactor (605) is connected with the gas-liquid mixer (6012) through a liquid circulating pipe (6014), and the first circulating pump (6013) is installed on the liquid circulating pipe (6014); the top of the first water washing reactor (604) or the second water washing reactor (605) is connected with the gas-liquid mixer (6012) through a gas circulation pipe (6015); the mixed liquid in the gas-liquid mixer (6012) is conveyed to the first water washing reactor (604) or the second water washing reactor (605) through a conveying pipe (6016);

the bottom of the absorption tower (607) is connected with the upper part of the absorption tower (607) through a second circulating pipe (6017), and a second circulating pump (6018) is fixedly connected to the second circulating pipe (6017).

10. A fly ash treatment system according to claim 2, wherein: second stirring shafts (6019) are arranged in the first water washing reactor (604), the second water washing reactor (605) and the third water washing reactor (606), the second stirring shafts (6019) are provided with stirring blades (6020), and the top of each second stirring shaft (6019) is connected with a main shaft of a stirring motor (6021) through a coupler;

bases (6022) are arranged below the first water washing reactor (604), the second water washing reactor (605) and the third water washing reactor (606);

the top of the first water washing reactor (604) is provided with a filtrate feeding pipe (6023), and the bottom of the third water washing reactor (606) is provided with a hardness removing discharging pipe (6024).