A device for washing and desalting solid waste incineration fly ash

Abstract

The present invention discloses a water washing and desalination treatment device for solid waste incineration fly ash, which relates to the technical field of combustion product treatment. It includes a fly ash water washing and desalination tank arranged on the ground in the factory building and a water washing and desalination mechanism connected in the factory building; the water washing and desalination mechanism includes a cage type elution support top plate and a cage type elution support bottom plate, and a plurality of vertically extending cage type elution support vertical rods are fixed between the cage type elution support top plate and the cage type elution support bottom plate; a plurality of filter cloth constraint arc plates are fixed between the outer edges of the cage type elution support top plate and the cage type elution support bottom plate, and an annular water washing and desalination filter cloth is fixed between the cage type elution support top plate and the cage type elution support bottom plate; this device can efficiently desalinate salts such as chlorides and sulfates in the solid waste incineration fly ash, reduce the chlorine content in the solid waste incineration fly ash to a relatively low level, and ensure that the treated solid waste incineration fly ash meets the standard requirements for subsequent disposal or utilization.

Description

Technical Field

[0001] The present invention relates to the technical field of combustion product treatment, and specifically to a water washing and desalination treatment device for solid waste incineration fly ash. Background Art

[0002] Municipal solid waste incineration fly ash is mainly collected in the flue gas pipeline, flue gas purification device, cyclone separator, bag filter and other light-weight and fine-particle powders during the process of municipal solid waste incineration power generation. With the continuous improvement of flue gas purification level, the flue gas discharged into the atmosphere is cleaner and cleaner, while the composition of the fine particles (fly ash) intercepted and captured by the purification system is becoming more and more complex. The main harmful substances in fly ash include organic pollutants such as benzo[a]pyrene, benzo[a]anthracene, and dioxins, as well as heavy metals such as Cr, Cd, Hg, Pb, Cu, and Ni. In addition, it also contains soluble salts such as NaCl and KCl, as well as components such as CaO, SiO2, and Al2O3 that are relatively similar to cement clinker.

[0003] The main function of the fly ash elution system is to separate potassium, sodium, sulfur, chlorine and other ions in the fly ash through a water washing process to meet the requirements for fly ash to enter the kiln. However, the current fly ash elution system still has certain deficiencies in terms of treatment efficiency and treatment effect, and needs to be further improved and optimized. Summary of the Invention

[0004] The purpose of the present invention is to provide a water washing and desalination treatment device for solid waste incineration fly ash, which can more efficiently elute the salt in the solid waste incineration fly ash.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A water washing and desalination treatment device for solid waste incineration fly ash, including a fly ash water washing and desalination pool arranged on the ground in the workshop, and a water washing and desalination mechanism connected in the workshop and located above the fly ash water washing and desalination pool;

[0007] A washing water input pipe and a washing water discharge pipe that are fixed to the outside of the fly ash water washing and desalination pool and are connected to its inside;

[0008] The water washing and desalination mechanism includes a cage-type elution support top plate and a cage-type elution support bottom plate, and a plurality of vertically extending cage-type elution support vertical rods are fixed between the cage-type elution support top plate and the cage-type elution support bottom plate;

[0009] A plurality of filter cloth constraint arc plates are fixed between the outer edges of the cage-type elution support top plate and the cage-type elution support bottom plate, and an annular water washing and desalination filter cloth is fixed between the cage-type elution support top plate and the cage-type elution support bottom plate;

[0010] The water-washing desalination filter cloth is located inside the inner sides of multiple filter cloth restraint arc plates, and the water-washing desalination filter cloth surrounds multiple cage-shaped elution support vertical rods;

[0011] A fly ash water-washing chamber is formed between the lower side of the cage-shaped elution support top plate, the top of the cage-shaped elution support bottom plate, and the inner side of the water-washing desalination filter cloth;

[0012] An initial fly ash input pipe communicating with the fly ash water-washing chamber is fixed on the cage-shaped elution support top plate.

[0013] Preferably, an elution stirring mechanism is provided on the cage-shaped elution support top plate. There is a vertically penetrating stirring shaft connection hole on the cage-shaped elution support top plate. The elution stirring mechanism includes an elution stirring drive shaft rotatably connected in the stirring shaft connection hole. Multiple fly ash water-washing stirring short rods are fixed at one end of the elution stirring drive shaft located inside the fly ash water-washing chamber;

[0014] An elution stirring drive housing is fixed on the top of the cage-shaped elution support top plate. The top of the elution stirring drive shaft extends into the elution stirring drive housing, and an elution stirring drive motor for driving the elution stirring drive shaft to rotate is fixed inside the elution stirring drive housing.

[0015] Explanation: The elution stirring mechanism fully stirs the solid waste incineration fly ash in the fly ash water-washing chamber, so that the salts in the solid waste incineration fly ash are fully dissolved in the clear water.

[0016] Preferably, a slag discharge mechanism is provided on the cage-shaped elution support bottom plate. There is a vertically penetrating slag discharge through hole on the cage-shaped elution support bottom plate. The slag discharge mechanism includes a slag discharge guiding conical shell fixed in the slag discharge through hole and being inverted conical;

[0017] A slag discharge control ring is rotatably connected to the lower end of the cage-shaped elution support bottom plate. An inverted conical slag discharge control conical shell is fixed on the inner side of the slag discharge control ring. The slag discharge control conical shell is rotatably fitted outside the outer side of the slag discharge guiding conical shell;

[0018] Multiple slag discharge perforations are provided on the side wall of the slag discharge guiding conical shell, and multiple slag discharge mating holes are provided on the side wall of the slag discharge control conical shell;

[0019] Multiple vertically extending slag discharge guiding pipes are fixed on the outside of the fly ash water-washing desalination tank, and a slag discharge temporary storage box with an upward opening is fixed on the ground inside the factory building and below the slag discharge guiding pipes.

[0020] Explanation: By controlling the opening and closing of the slag discharge mechanism, it is convenient to discharge the eluted solid waste incineration fly ash from the slag discharge mechanism.

[0021] Preferably, an elution lifting mechanism is provided at the top of the water washing and desalting mechanism. The elution lifting mechanism includes an elution lifting fixed cylinder connected to the inner side wall of the plant and opening downward. An elution lifting sliding cylinder opening upward is slidably connected in the elution lifting fixed cylinder. An elution lifting connecting frame is fixed to the top of the cage-shaped elution support top plate. The lower end of the elution lifting sliding cylinder is fixedly connected to the elution lifting connecting frame;

[0022] An elution lifting driving rod for driving the elution lifting sliding cylinder to move up and down is provided in the elution lifting fixed cylinder.

[0023] Note: The elution lifting mechanism facilitates controlling the depth of the entire water washing and desalting mechanism immersed in water, and the elution lifting mechanism can drive the entire water washing and desalting mechanism to move up and down reciprocally to rinse the solid waste incineration fly ash in the fly ash water washing chamber.

[0024] Preferably, the elution lifting mechanism is connected to the inner side wall of the plant through a horizontal migration mechanism. The horizontal migration mechanism includes a horizontal migration support base fixed to the top of the elution lifting fixed cylinder. The horizontal migration support base has a horizontally penetrating wheel shaft connection hole. A migration wheel support shaft is rotatably connected in the wheel shaft connection hole. A horizontal migration support wheel is fixed to the end of the migration wheel support shaft;

[0025] A horizontally extending horizontal migration support beam is fixed to the inner side wall of the plant. A horizontal migration support track is fixed to the top of the horizontal migration support beam. The horizontal migration support wheel is rollingly supported on the top of the horizontal migration support track.

[0026] Note: The horizontal migration mechanism drives the entire water washing and desalting mechanism to migrate horizontally, facilitating moving the entire water washing and desalting mechanism above the ash slag discharge diversion pipe to facilitate discharging the eluted solid waste incineration fly ash.

[0027] Preferably, the horizontal migration mechanism is driven to move through a linear motor structure. The linear motor structure includes a driving support plate fixed to the top of the horizontal migration support base. A driving support beam arranged parallel to the horizontal migration support beam is fixed to the inner side wall of the plant. The driving support beam is above the driving support plate;

[0028] A linear motor stator is fixed to the lower side of the driving support beam. A linear motor mover is fixed to the top of the driving support plate.

[0029] Note: The linear motor structure can drive the entire water washing and desalting mechanism to migrate horizontally more smoothly.

[0030] Preferably, a one-way water inlet mechanism is provided on the cage-shaped elution support bottom plate. The one-way water inlet mechanism includes a one-way water inlet pipe fixed to the cage-shaped elution support bottom plate and extending vertically. The upper end of the one-way water inlet pipe is communicated with the fly ash water washing chamber. A one-way water inlet lower control plate and a one-way water inlet upper control plate are sequentially fixed in the one-way water inlet pipe from bottom to top;

[0031] The lower control board for unidirectional water inlet has a vertically penetrating unidirectional water inlet hole, and the upper control board for unidirectional water inlet has a vertically penetrating ejector rod connection hole. A unidirectional water inlet control ejector rod is slidably connected in the ejector rod connection hole, and the lower end of the unidirectional water inlet control ejector rod is in top pressure fit in the unidirectional water inlet hole;

[0032] A unidirectional water inlet control spring is in top pressure fit between the unidirectional water inlet control ejector rod and the lower side of the upper control board for unidirectional water inlet;

[0033] The upper control board for unidirectional water inlet has a plurality of vertically penetrating unidirectional water inlet circulation holes.

[0034] Note: The unidirectional water inlet mechanism can utilize the pressure difference of water in the initial stage to quickly make water rush into the fly ash water washing chamber, reduce the total water inlet time, and improve work efficiency.

[0035] Compared with the prior art, the beneficial effects of the present invention are reflected in the following aspects:

[0036] 1. The structure of the present invention is reasonably designed, and can efficiently desalt salts such as chlorides and sulfates in solid waste incineration fly ash, reduce the chlorine content in the solid waste incineration fly ash to a relatively low level, and ensure that the treated solid waste incineration fly ash meets the standard requirements for subsequent disposal or utilization;

[0037] 2. The present invention has strong heavy metal removal ability. In addition to desalination, it can also effectively remove heavy metals such as lead, mercury, and cadmium in solid waste incineration fly ash, separate the heavy metals from the solid waste incineration fly ash, and reduce the toxicity of the solid waste incineration fly ash;

[0038] 3. The present invention has a large operating flexibility, can adapt to solid waste incineration fly ash with various properties and various salt contents, and can flexibly adjust operating parameters according to the changes of the solid waste incineration fly ash, including washing time, water washing temperature, liquid-solid ratio, etc., to ensure the stability of the treatment effect;

[0039] 4. The present invention realizes the recycling of water resources. During the elution process of solid waste incineration fly ash, the washing and dewatering water is recycled repeatedly until the salt content in the water is close to saturation, reducing the use of fresh water, reducing water resource consumption, realizing the recycling of water resources, saving costs and reducing wastewater discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is the front view of the present invention;

[0041] Figure 2 is Figure 1 the left view of

[0042] Figure 3 is the structural schematic diagram of the water washing and desalting mechanism of the present invention;

[0043] Figure 4 It is a schematic structural diagram of the ash discharge mechanism of the present invention;

[0044] Figure 5 It is a schematic structural diagram of the one-way water inlet mechanism of the present invention;

[0045] Figure 6 It is a schematic structural diagram of the elution lifting mechanism of the present invention.

[0046] In the figure, 10 - factory building, 11 - fly ash water washing and desalting tank, 111 - washing and dewatering input pipe, 112 - washing and dewatering discharge pipe, 20 - water washing and desalting mechanism, 211 - cage - type elution support top plate, 212 - cage - type elution support bottom plate, 213 - cage - type elution support vertical rod, 214 - filter cloth restraint arc plate, 215 - initial fly ash input pipe, 22 - water washing and desalting filter cloth, 220 - fly ash water washing chamber, 23 - elution stirring mechanism, 230 - stirring shaft connection hole, 231 - elution stirring drive shaft, 232 - fly ash water washing stirring short rod, 233 - elution stirring drive housing, 234 - elution stirring drive motor, 24 - ash discharge mechanism, 240 - ash discharge through - hole, 241 - ash discharge guide conical shell, 242 - ash discharge control ring, 243 - ash discharge control conical shell, 244 - ash discharge guide pipe, 245 - ash discharge temporary storage box, 2410 - ash discharge perforation, 2430 - ash discharge mating hole, 25 - one - way water inlet mechanism, 251 - one - way water inlet pipe, 252 - one - way water inlet lower control plate, 253 - one - way water inlet upper control plate, 254 - one - way water inlet hole, 255 - ejector rod connection hole, 256 - one - way water inlet control ejector rod, 257 - one - way water inlet control spring, 258 - one - way water inlet flow - through hole, 31 - elution lifting mechanism, 311 - elution lifting fixed cylinder, 312 - elution lifting sliding cylinder, 313 - elution lifting connecting frame, 314 - elution lifting drive rod, 32 - horizontal migration mechanism, 321 - horizontal migration support seat, 3210 - wheel shaft connection hole, 322 - migration wheel support shaft, 323 - horizontal migration support wheel, 324 - horizontal migration support beam, 325 - horizontal migration support track, 33 - linear motor structure, 331 - drive support plate, 332 - drive support beam, 333 - linear motor stator, 334 - linear motor rotor. Detailed implementation mode

[0047] The following combines Figures 1 to 6 to describe the present invention in detail. For the convenience of narration, the directions mentioned below are stipulated as follows: The up - down, left - right, front - back directions mentioned below are consistent with the up - down, left - right, front - back directions of the projection relationship of each main view or structural schematic diagram itself.

[0048] Example 1: A water washing and desalting treatment device for solid waste incineration fly ash, as Figure 1As shown, it includes a fly ash washing and desalting tank 11 arranged on the ground inside the factory building 10, and a washing and desalting mechanism 20 connected inside the factory building 10 and located above the fly ash washing and desalting tank 11;

[0049] Outside the fly ash washing and desalting tank 11, a washing water input pipe 111 and a washing water discharge pipe 112 connected to its interior are fixed;

[0050] As Figure 3 shown, the washing and desalting mechanism 20 includes a cage - type elution support top plate 211 and a cage - type elution support bottom plate 212. Between the cage - type elution support top plate 211 and the cage - type elution support bottom plate 212, multiple vertically extending cage - type elution support vertical rods 213 are fixed;

[0051] Between the outer edges of the cage - type elution support top plate 211 and the cage - type elution support bottom plate 212, multiple filter cloth constraint arc plates 214 are fixed. Between the cage - type elution support top plate 211 and the cage - type elution support bottom plate 212, an annular washing and desalting filter cloth 22 is fixed;

[0052] The washing and desalting filter cloth 22 is inside the multiple filter cloth constraint arc plates 214, and the washing and desalting filter cloth 22 surrounds the multiple cage - type elution support vertical rods 213;

[0053] Between the lower side of the cage - type elution support top plate 211, the top of the cage - type elution support bottom plate 212, and the inside of the washing and desalting filter cloth 22, a fly ash washing chamber 220 is formed;

[0054] On the cage - type elution support top plate 211, an initial fly ash input pipe 215 connected to the fly ash washing chamber 220 is fixed.

[0055] As Figure 3 shown, on the cage - type elution support top plate 211, an elution stirring mechanism 23 is provided. On the cage - type elution support top plate 211, there is a vertically penetrating stirring shaft connection hole 230. The elution stirring mechanism 23 includes an elution stirring drive shaft 231 rotatably connected in the stirring shaft connection hole 230. At one end of the elution stirring drive shaft 231 inside the fly ash washing chamber 220, multiple fly ash washing stirring short rods 232 are fixed;

[0056] On the top of the cage - type elution support top plate 211, an elution stirring drive housing 233 is fixed. The top of the elution stirring drive shaft 231 extends into the elution stirring drive housing 233. Inside the elution stirring drive housing 233, an elution stirring drive motor 234 for driving the elution stirring drive shaft 231 to rotate is fixed.

[0057] The elution stirring drive motor 234 is a commercially available motor of the prior art;

[0058] As Figure 3As shown, a slag discharge mechanism 24 is provided on the cage - type elution support bottom plate 212. As Figure 4 shown, the cage - type elution support bottom plate 212 has a vertically - penetrating slag discharge through - hole 240. The slag discharge mechanism 24 includes a slag discharge guiding conical shell 241 which is fixed in the slag discharge through - hole 240 and is in an inverted conical shape;

[0059] A slag discharge control ring 242 is rotatably connected to the lower end of the cage - type elution support bottom plate 212. An inverted conical slag discharge control conical shell 243 is fixed to the inner side of the slag discharge control ring 242. The slag discharge control conical shell 243 is rotationally fitted and sleeved on the outer side of the slag discharge guiding conical shell 241;

[0060] A plurality of slag discharge perforations 2410 are provided on the side wall of the slag discharge guiding conical shell 241, and a plurality of slag discharge mating holes 2430 are provided on the side wall of the slag discharge control conical shell 243;

[0061] The slag discharge control ring 242 is driven by a servo - motor of the prior art fixed on the cage - type elution support bottom plate 212 to rotate around the vertical axis of the slag discharge control ring 242 through a worm - gear and worm drive;

[0062] A plurality of vertically - extending slag discharge guiding pipes 244 are fixed to the outside of the fly - ash water elution and desalination tank 11. A slag discharge temporary storage box 245 with an upward - opening is fixed on the ground in the workshop 10 and below the slag discharge guiding pipes 244.

[0063] Embodiment 2: On the basis of Embodiment 1, as Figure 6 shown, an elution lifting mechanism 31 is provided at the top of the water elution and desalination mechanism 20. The elution lifting mechanism 31 includes an elution lifting fixed cylinder 311 which is connected to the inner side wall of the workshop 10 and has a downward - opening. An elution lifting sliding cylinder 312 is slidably connected in the elution lifting fixed cylinder 311. An elution lifting connecting frame 313 is fixed to the top of the cage - type elution support top plate 211. The lower end of the elution lifting sliding cylinder 312 is fixedly connected to the elution lifting connecting frame 313;

[0064] An elution lifting driving rod 314 for driving the elution lifting sliding cylinder 312 to move up and down is provided in the elution lifting fixed cylinder 311. The elution lifting driving rod 314 is an electric control telescopic rod driven by a servo - motor in the prior art. The outer rod end of the elution lifting driving rod 314 is fixedly connected to the inner top of the elution lifting fixed cylinder 311, and the inner rod end of the elution lifting driving rod 314 is fixedly connected to the inner bottom of the elution lifting sliding cylinder 312.

[0065] Embodiment 3: On the basis of Embodiment 2, as Figure 6As shown, the elution lifting mechanism 31 is connected to the inner wall of the plant building 10 through the horizontal migration mechanism 32. The horizontal migration mechanism 32 includes a horizontal migration support base 321 fixed to the top of the elution lifting fixed cylinder 311. The horizontal migration support base 321 has a horizontally penetrating wheel shaft connection hole 3210. A migration wheel support shaft 322 is rotatably connected in the wheel shaft connection hole 3210. A horizontal migration support wheel 323 is fixed to the end of the migration wheel support shaft 322;

[0066] A horizontally extending horizontal migration support beam 324 is fixed to the inner wall of the plant building 10. A horizontal migration support rail 325 is fixed to the top of the horizontal migration support beam 324. The horizontal migration support wheel 323 is rollingly supported on the top of the horizontal migration support rail 325.

[0067] Example 4: On the basis of Example 3, as Figure 6 shown, the horizontal migration mechanism 32 is driven to move through the linear motor structure 33. The linear motor structure 33 includes a driving support plate 331 fixed to the top of the horizontal migration support base 321. A driving support beam 332 parallel to the horizontal migration support beam 324 is fixed to the inner wall of the plant building 10. The driving support beam 332 is located above the driving support plate 331;

[0068] A linear motor stator 333 is fixed to the lower side of the driving support beam 332. A linear motor mover 334 is fixed to the top of the driving support plate 331.

[0069] Example 5: On the basis of Example 4, as Figure 3 shown, a one-way water inlet mechanism 25 is provided on the cage-type elution support bottom plate 212. As Figure 5 shown, the one-way water inlet mechanism 25 includes a one-way water inlet pipe 251 fixed to the cage-type elution support bottom plate 212 and extending vertically. The upper end of the one-way water inlet pipe 251 is communicated with the fly ash water washing chamber 220. A one-way water inlet lower control plate 252 and a one-way water inlet upper control plate 253 are sequentially fixed in the one-way water inlet pipe 251 from bottom to top;

[0070] The one-way water inlet lower control plate 252 has a vertically penetrating one-way water inlet hole 254. The one-way water inlet upper control plate 253 has a vertically penetrating ejector rod connection hole 255. A one-way water inlet control ejector rod 256 is slidably connected in the ejector rod connection hole 255. The lower end of the one-way water inlet control ejector rod 256 is in top pressure fit in the one-way water inlet hole 254;

[0071] The lower end of the one-way water inlet control ejector rod 256 is of an inverted cone surface structure. The top of the one-way water inlet hole 254 is also of an inverted cone surface structure. The cone surface at the lower end of the one-way water inlet control ejector rod 256 is in top pressure fit in the cone surface at the top of the one-way water inlet hole 254;

[0072] A one-way water inlet control push rod 256 and a lower side of a one-way water inlet upper control plate 253 are press-fitted with a one-way water inlet control spring 257 therebetween;

[0073] The one-way water inlet upper control plate 253 is provided with a plurality of vertically penetrating one-way water inlet flow holes 258.

[0074] During the actual application process of the present invention, clean water is input into the fly ash water washing and desalting tank 11 through a washing and dewatering input pipe 111, and the input amount of the clean water is 80% of the volume of the fly ash water washing and desalting tank 11;

[0075] Using a conveyor of the prior art, the solid waste incineration fly ash to be processed is input into the fly ash water washing chamber 220 through an initial fly ash input pipe 215;

[0076] By volume, the input amount of the solid waste incineration fly ash each time is 30% of the volume of the fly ash water washing chamber 220;

[0077] Driven by an elution lifting mechanism 31, a cage-type water washing and desalting mechanism 20 is pressed into the clean water. When the inner rod of an elution lifting drive rod 314 extends, it can drive an elution lifting sliding cylinder 312, an elution lifting connecting frame 313, and the entire water washing and desalting mechanism 20 to move downward along the axis of an elution lifting fixed cylinder 311 together, so that the lower half of the entire water washing and desalting mechanism 20 is immersed in the clean water of the fly ash water washing and desalting tank 11;

[0078] Under the action of water pressure, the one-way water inlet control push rod 256 can be pushed upward. In the initial stage, the clean water will quickly enter the fly ash water washing chamber 220 through a one-way water inlet hole 254 and a one-way water inlet flow hole 258;

[0079] And under the action of water pressure, the clean water will also penetrate through a water washing and desalting filter cloth 22 into the fly ash water washing chamber 220. The water washing and desalting filter cloth 22 can adopt a filter cloth with a pore size of 400 meshes in the prior art;

[0080] An elution stirring mechanism 23 is used to fully stir the solid waste incineration fly ash in the fly ash water washing chamber 220, so that the salts in the solid waste incineration fly ash are fully dissolved in the clean water;

[0081] An output shaft of an elution stirring drive motor 234 drives an elution stirring drive shaft 231 to rotate, and the elution stirring drive shaft 231 drives a plurality of fly ash water washing stirring short rods 232 to rotate together, so as to fully stir the solid waste incineration fly ash in the fly ash water washing chamber 220;

[0082] After the salts in the solid waste incineration fly ash are fully dissolved in the clear water, the entire water washing and desalting mechanism 20 is lifted by the elution lifting mechanism 31. The retraction of the inner rod of the elution lifting drive rod 314 can drive the elution lifting sliding cylinder 312, the elution lifting connecting frame 313, and the entire water washing and desalting mechanism 20 to move upward along the axis of the elution lifting fixed cylinder 311, so that the entire water washing and desalting mechanism 20 is separated from the clear water;

[0083] Let the entire water washing and desalting mechanism 20 stand still for 10 minutes, so that the water in the fly ash water washing chamber 220 can pass through the water washing and desalting filter cloth 22 under the action of gravity and fall back into the fly ash water washing and desalting pool 11, and the water in the fly ash water washing chamber 220 is drained;

[0084] The entire water washing and desalting mechanism 20 is driven by the horizontal migration mechanism 32 to be above the ash slag discharge diversion pipe 244, which is convenient for discharging slag. The linear motor structure 33 can drive the elution lifting mechanism 31 together with the entire water washing and desalting mechanism 20 to move along the direction of the horizontal migration support track 325. During this process, the horizontal migration support wheel 323 always rolls and supports on the top of the horizontal migration support track 325, and stops moving when the water washing and desalting mechanism 20 is directly above the ash slag discharge diversion pipe 244;

[0085] In the initial state, the ash slag discharge perforations 2410 and the ash slag discharge matching holes 2430 in the ash slag discharge mechanism 24 are in a staggered and isolated state;

[0086] The ash slag discharge control ring 242 is driven by a servo motor of the prior art fixed on the cage-type elution support bottom plate 212 to rotate around the vertical axis of the ash slag discharge control ring 242 through a worm and gear drive. The ash slag discharge control ring 242 then drives the ash slag discharge control conical shell 243 to rotate together, so that the ash slag discharge perforations 2410 and the ash slag discharge matching holes 2430 are aligned and communicated;

[0087] The solid waste incineration fly ash after elution treatment will be discharged through the ash slag discharge perforations 2410 and the ash slag discharge matching holes 2430, and the solid waste incineration fly ash after elution treatment will fall into the ash slag discharge temporary storage box 245 for temporary storage under the guiding action of the ash slag discharge diversion pipe 244;

[0088] When the salts dissolved in the clear water in the fly ash water washing and desalting pool 11 are saturated to form saturated brine, the saturated brine is discharged through the washing water discharge pipe 112, and the saturated brine is subjected to evaporation crystallization treatment to recover the salts therein.

Claims

1. A water washing and desalination treatment device for solid waste incineration fly ash, characterized in that, It includes a fly ash water washing and desalination tank (11) arranged on the ground inside the workshop (10), and a water washing and desalination mechanism (20) connected inside the workshop (10); The water washing and desalination mechanism (20) includes a cage - type elution support top plate (211) and a cage - type elution support bottom plate (212), and a plurality of vertically extending cage - type elution support vertical rods (213) are fixed between the cage - type elution support top plate (211) and the cage - type elution support bottom plate (212); A plurality of filter cloth constraint arc plates (214) are fixed between the outer edges of the cage - type elution support top plate (211) and the cage - type elution support bottom plate (212), and an annular water washing and desalination filter cloth (22) is fixed between the cage - type elution support top plate (211) and the cage - type elution support bottom plate (212); The water washing and desalination filter cloth (22) is inside a plurality of the filter cloth constraint arc plates (214), and the water washing and desalination filter cloth (22) surrounds a plurality of the cage - type elution support vertical rods (213); A fly ash water washing chamber (220) is formed between the lower side of the cage - type elution support top plate (211), the top of the cage - type elution support bottom plate (212), and the inside of the water washing and desalination filter cloth (22); An initial fly ash input pipe (215) communicating with the fly ash water washing chamber (220) is fixed on the cage - type elution support top plate (211); An elution stirring mechanism (23) is arranged on the cage - type elution support top plate (211). The cage - type elution support top plate (211) has a vertically penetrating stirring shaft connection hole (230). The elution stirring mechanism (23) includes an elution stirring drive shaft (231) rotatably connected in the stirring shaft connection hole (230). One end of the elution stirring drive shaft (231) inside the fly ash water washing chamber (220) is fixed with a plurality of fly ash water washing stirring short rods (232); An elution stirring drive housing (233) is fixed on the top of the cage - type elution support top plate (211). The top of the elution stirring drive shaft (231) extends into the elution stirring drive housing (233), and an elution stirring drive motor (234) for driving the elution stirring drive shaft (231) to rotate is fixed inside the elution stirring drive housing (233); A slag discharge mechanism (24) is arranged on the cage - type elution support bottom plate (212). The cage - type elution support bottom plate (212) has a vertically penetrating slag discharge through - hole (240). The slag discharge mechanism (24) includes a slag discharge guiding conical shell (241) which is fixed in the slag discharge through - hole (240) and is in an inverted conical shape; A slag discharge control ring (242) is rotatably connected to the lower end of the cage - type elution support bottom plate (212). An inverted conical slag discharge control conical shell (243) is fixed inside the slag discharge control ring (242), and the slag discharge control conical shell (243) is rotatably fitted outside the outer side surface of the slag discharge guiding conical shell (241); The side wall of the ash discharge guiding conical shell (241) is provided with a plurality of ash discharge perforations (2410), and the side wall of the ash discharge control conical shell (243) is provided with a plurality of ash discharge matching holes (2430); A plurality of vertically extending ash discharge guiding pipes (244) are fixed outside the fly ash washing and desalination tank (11), and an ash discharge temporary storage box (245) with an upward opening is fixed on the ground in the factory building (10) and below the ash discharge guiding pipes (244); A one-way water inlet mechanism (25) is arranged on the cage-type washing and supporting bottom plate (212). The one-way water inlet mechanism (25) includes a one-way water inlet pipe (251) which is fixed on the cage-type washing and supporting bottom plate (212) and extends vertically. The upper end of the one-way water inlet pipe (251) is communicated with the fly ash washing chamber (220). A one-way water inlet lower control plate (252) and a one-way water inlet upper control plate (253) are sequentially fixed in the one-way water inlet pipe (251) from bottom to top; The one-way water inlet lower control plate (252) is provided with a vertically penetrating one-way water inlet hole (254), and the one-way water inlet upper control plate (253) is provided with a vertically penetrating ejector rod connection hole (255). A one-way water inlet control ejector rod (256) is slidably connected in the ejector rod connection hole (255), and the lower end of the one-way water inlet control ejector rod (256) is in top pressure fit with the one-way water inlet hole (254); A one-way water inlet control spring (257) is in top pressure fit between the one-way water inlet control ejector rod (256) and the lower side of the one-way water inlet upper control plate (253); The one-way water inlet upper control plate (253) is provided with a plurality of vertically penetrating one-way water inlet circulation holes (258).

2. The water washing and desalination treatment device for solid waste incineration fly ash according to claim 1, wherein, An elution lifting mechanism (31) is arranged at the top of the washing and desalination mechanism (20). The elution lifting mechanism (31) includes an elution lifting fixed cylinder (311) which is connected to the inner side wall of the factory building (10) and has a downward opening. An elution lifting sliding cylinder (312) with an upward opening is slidably connected in the elution lifting fixed cylinder (311). An elution lifting connecting frame (313) is fixed at the top of the cage-type washing and supporting top plate (211), and the lower end of the elution lifting sliding cylinder (312) is fixedly connected with the elution lifting connecting frame (313); An elution lifting driving rod (314) for driving the elution lifting sliding cylinder (312) to move up and down is arranged in the elution lifting fixed cylinder (311).

3. The water washing and desalination treatment device for solid waste incineration fly ash according to claim 2, characterized in that, The elution lifting mechanism (31) is connected to the inner side wall of the factory building (10) through a horizontal migration mechanism (32). The horizontal migration mechanism (32) includes a horizontal migration support seat (321) fixed at the top of the elution lifting fixed cylinder (311). The horizontal migration support seat (321) is provided with a horizontally penetrating wheel shaft connection hole (3210). A migration wheel support shaft (322) is rotatably connected in the wheel shaft connection hole (3210), and a horizontal migration support wheel (323) is fixed at the end of the migration wheel support shaft (322); A horizontally extending horizontal migration support beam (324) is fixed on the inner side wall of the factory building (10). A horizontal migration support track (325) is fixed on the top of the horizontal migration support beam (324), and the horizontal migration support wheel (323) is rollingly supported on the top of the horizontal migration support track (325).

4. The water washing and desalination treatment device for solid waste incineration fly ash according to claim 3, characterized in that, The horizontal migration mechanism (32) is driven to move by a linear motor structure (33). The linear motor structure (33) includes a driving support plate (331) fixed on the top of the horizontal migration support base (321). A driving support beam (332) parallel to the horizontal migration support beam (324) is fixed on the inner side wall of the factory building (10), and the driving support beam (332) is located above the driving support plate (331). A linear motor stator (333) is fixed on the lower side of the driving support beam (332), and a linear motor mover (334) is fixed on the top of the driving support plate (331).

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