Fly ash washing dechlorination, decalcification and heavy metal removal device

Abstract

The utility model discloses a fly ash washing dechlorination, decalcification and heavy metal removal device which comprises a reaction tank, an auxiliary flushing device, a suspended aeration device and a stirrer, the reaction tank is of a double-layer structure, the inner layer of the reaction tank is higher than the outer layer, and the bottom of the reaction tank is of a conical structure and fixedly connected with a slurry discharging pipe. The side wall of the reaction tank is fixedly communicated with a slurry feeding pipe, a one-way pressure valve used for controlling the liquid inlet speed and opening and closing of the slurry feeding pipe is fixedly mounted between the slurry feeding pipe and the reaction tank, and the top of the reaction tank is detachably connected with a stirrer used for stirring slurry and a suspended aeration device used for introducing flue gas; one end, far away from the reaction tank, of the aeration device is fixedly connected with an auxiliary flushing device; the device solves the problems that the fly ash washing dechlorination efficiency is low, the reaction time is long, a decalcification and heavy metal removal agent is expensive, a flue gas aeration device is easy to block, and a slag slurry pipeline and a pump are easy to block.

Description

Technical Field

[0001] The invention relates to the field of fly ash treatment, and in particular to a fly ash water washing dechlorination and decalcification heavy metal removal device. Background Art

[0002] In recent years, as people pay more and more attention to environmental issues, the issue of fly ash disposal has also attracted more and more attention from relevant departments, and the corresponding disposal technology is also gradually developing. The main processes for fly ash treatment are low-temperature pyrolysis, cement kiln synergy, high-temperature melting, etc.; fly ash washing is a necessary pretreatment technology for dechlorination of fly ash, among which the water washing tank is a key equipment of the pretreatment technology, which directly determines the efficiency and effect of water washing dechlorination.

[0003] The existing water washing equipment has problems such as low dechlorination efficiency, long reaction time, no decalcification and heavy metal removal function, easy blockage of flue gas aeration device, and easy blockage of slurry pipes and pumps during the water washing process. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention is intended to provide a fly ash water washing dechlorination and decalcification and heavy metal removal device to solve the problems of low fly ash water washing dechlorination efficiency, long reaction time, no decalcification and heavy metal removal function, easy blockage of flue gas aeration device, and easy blockage of slurry pipes and pumps.

[0005] To achieve the above-mentioned purpose, the invention adopts the following technical scheme: a fly ash water washing dechlorination and decalcification heavy metal removal device, characterized in that it includes a reaction tank, an auxiliary flushing device, an aeration device, and a stirrer;

[0006] The reaction tank is a double-layer structure, the inner layer of the reaction tank is higher than the outer layer, the bottom of the reaction tank is a conical structure, and a slurry discharge pipe is fixedly connected to the bottom of the reaction tank; a slurry feed pipe is fixedly connected to the side wall of the reaction tank, and a one-way pressure valve for controlling the liquid inlet speed and switch of the slurry feed pipe is fixedly installed between the slurry feed pipe and the reaction tank; the agitator for stirring the slurry and the aeration device for exhausting smoke are detachably connected to the top of the reaction tank; one end of the aeration device is located inside the reaction tank, and the auxiliary flushing device is fixedly connected to the end away from the reaction tank.

[0007] Compared with the prior art, the invention has the following beneficial effects: 1) The flue gas aeration device of the incineration plant is installed in the water washing and dechlorination device, and the waste heat of the flue gas is used to increase the reaction temperature of the water washing and dechlorination, improve the efficiency of the fly ash water washing and dechlorination, and shorten the reaction time. 2) The carbon dioxide in the flue gas reacts with the soluble heavy metals and soluble calcium in the fly ash to form an insoluble precipitate, realizing the functions of decalcification and heavy metal removal, and reducing the cost of subsequent decalcification agent addition. 3) The reaction tank is a double-layer structure with the inner layer higher than the outer layer, forming an overflow weir to keep the liquid level in the reaction tank stable, and a one-way pressure valve is used to control the input rate of the fly ash liquid, so that the aeration is more uniform and the reaction is more stable; at the same time, the installation height of the flue gas aeration pipe is increased to reduce the problem of ash slag settling and blocking the aeration pipe due to failure shutdown of the fan agitator and the increase in sand content; at the same time, online automatic high-pressure washing and acid washing are set to realize online clearing and maintenance, and realize continuous operation. 4) The bottom of the reaction tank is a conical structure to facilitate the discharge of the precipitate from the slurry discharge pipe to the reaction tank.

[0008] Furthermore, the auxiliary flushing device includes a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, and a flushing regulating device, the flushing regulating device is fixedly connected to the first pipeline, the second pipeline, the third pipeline, and the fourth pipeline, the flushing regulating device is a spherical structure with a through hole, a spherical receiving tube is fixedly connected to the inside of the flushing regulating device, a flushing regulating tube is rotatably connected to the spherical receiving tube, a flushing regulating valve for switching the connection state of the flushing regulating tube with the first pipeline, the second pipeline, and the third pipeline is fixedly connected to the outside of the flushing regulating tube, and the flushing regulating device and the fourth pipeline are a connecting structure; the auxiliary flushing device is used to realize the switching of the three functions of the aeration device: conveying carbon dioxide, high-pressure flushing of the aeration device, and pickling and descaling of the aeration device.

[0009] Furthermore, the aeration device includes: an aeration delivery pipe, an aeration main pipe, an aeration branch pipe, and a flushing pipe flange. The aeration delivery pipe is connected to the fourth pipe at one end away from the reaction tank. The aeration delivery pipe is located inside the reaction tank and is fixedly connected to the aeration main pipe at one end. The aeration branch pipes are fixedly connected to both sides of the aeration main pipe. The aeration branch pipes are open-hole structures, and small aeration branch pipe holes are provided on the aeration branch pipes. The flushing pipe flanges are fixedly installed at both ends of the aeration main pipe to achieve a better aeration effect on the fly ash liquid and make its reaction more sufficient. When the aeration device is seriously blocked, the flushing pipe flange is opened for pickling and descaling to extend the life of the aeration device.

[0010] Furthermore, the agitator includes a stirring motor, a first stirring shaft, and a first stirring blade. The stirring motor provides output power to the first stirring shaft and then drives the first stirring blade to rotate. The first stirring shaft and the first stirring blade are used to achieve a stirring reaction of the fly ash liquid, thereby accelerating the rate of fly ash water washing, dechlorination and heavy metal removal.

[0011] Furthermore, the first stirring blade is a platform-shaped blade structure, and a plurality of through holes are opened on the first stirring blade to ensure that the liquid level is relatively stable during the stirring process and that the fly ash liquid concentration does not vary between the first stirring blades during the sedimentation process.

[0012] Furthermore, the first stirring shaft has a conical structure at one end close to the first stirring blade, so that the stirring blade fits more closely to the bottom of the reaction tank, thereby preventing blockage and achieving a better cleaning effect.

[0013] Furthermore, a slurry cleaning device is fixedly connected to the inside of one end of the slurry discharge pipe close to the reaction tank, and a slurry pump for sucking slurry is fixedly connected to the end of the slurry discharge pipe away from the reaction tank. The slurry cleaning device is used to clean the slurry more quickly and prevent blockage.

[0014] Furthermore, the slurry cleaning device includes a cleaning motor, a first cleaning shaft, a second cleaning shaft, and a cleaning rotating plate; one end of the first cleaning shaft is fixedly connected to the cleaning motor, and the other end is fixedly connected to the second cleaning shaft, and the cleaning rotating plate is fixedly installed on the second cleaning shaft. The cleaning motor provides output power for the first cleaning shaft, and the first cleaning shaft drives the second cleaning shaft to rotate and then drives the cleaning rotating plate to rotate. Using a cleaning motor to drive, the slurry cleaning speed is faster, and the slurry discharge pipe can be blocked when the cleaning motor is not operating.

[0015] Furthermore, a pressure valve switch for controlling the one-way pressure valve is fixedly connected to the outside of the reaction tank. Controlling the one-way pressure valve makes the fly ash water washing, dechlorination and heavy metal removal process more automated, thereby improving the safety factor.

[0016] The beneficial effects of the present invention are as follows: the reaction tank of the present invention has a double-layer structure, the inner layer is higher than the outer layer, an overflow weir is formed to keep the liquid level in the reaction tank stable and the aeration is more stable; the bottom of the reaction tank is a conical structure, which is convenient for precipitation to be discharged from the reaction tank through the slurry discharge pipe; the aeration device inputs carbon dioxide to react with heavy metals and calcium in the fly ash liquid and precipitate to achieve decalcification and heavy metal removal; a one-way pressure valve is used to control the input rate of the fly ash liquid; the auxiliary flushing device is used to realize the switching of the three functions of the aeration device, namely, delivering carbon dioxide, high-pressure flushing of the aeration device, and pickling and descaling of the aeration device; the aeration device fully reacts to the fly ash liquid; when the aeration device is seriously blocked, the flushing pipe flange is opened for pickling and descaling, thereby extending the life of the aeration device; the stirring device can meet the needs of the device when it is working and when it is cleaned; the slurry cleaning device is used to clean the slurry more quickly and prevent blockage; the cleaning motor is used to drive the slurry cleaning speed, and the slurry discharge pipe can be blocked when the cleaning motor is not working. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0018] Figure 1 It is a schematic diagram of a half-section structure of a fly ash water washing dechlorination and decalcification and heavy metal removal device disclosed in an embodiment of the present invention.

[0019] Figure 2 The invention is a schematic structural diagram of an auxiliary flushing device for a fly ash water washing dechlorination and decalcification and heavy metal removal device disclosed in an embodiment of the present invention.

[0020] Figure 3 The invention is a schematic diagram of the structure of an aeration device for a fly ash water washing dechlorination and decalcification and heavy metal removal device disclosed in an embodiment of the present invention.

[0021] Figure 4 The present invention is a schematic diagram of the first agitator structure of a fly ash water washing dechlorination and decalcification and heavy metal removal device disclosed in an embodiment of the present invention.

[0022] Figure 5 The invention is a schematic structural diagram of a slurry cleaning device for a fly ash water washing dechlorination and decalcification and heavy metal removal device disclosed in an embodiment of the present invention.

[0023] Figure 6 The invention discloses an aeration branch pipe structure schematic diagram of a fly ash water washing dechlorination and decalcification and heavy metal removal device.

[0024] In the figure: 1-reaction tank, 2-auxiliary flushing device, 201-first pipeline, 202-second pipeline, 203-third pipeline, 204-fourth pipeline, 205-flushing regulating valve, 206-spherical receiving tube, 207-flushing regulating tube, 208-flushing regulating device, 3-agitator, 301-stirring motor, 302-first stirring shaft, 303-first stirring fan blade, 304-through hole, 4-slurry pump, 401-first driving shaft, 5-slurry discharge pipe, 6-slurry cleaning device, 601-cleaning motor, 602-first cleaning rotating shaft, 603-second cleaning rotating shaft, 604-cleaning rotating plate, 7-slurry feeding pipe, 8-aeration device, 801-aeration conveying pipe, 802-aeration branch pipe, 803-aeration main pipe, 804-flushing pipe flange, 805-aeration branch pipe small hole, 9-pressure valve switch, 10-one-way pressure valve. DETAILED DESCRIPTION

[0025] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0026] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] The sediment produced in the current washing tank during the washing process can easily clog the pipes, the fly ash washing dechlorination efficiency is low, the cost of decalcification and heavy metal removal is high, the ash is easy to settle at the bottom and the high solid content can easily lead to failure of the flue gas aeration device.

[0029] The present invention aims to provide a fly ash water washing dechlorination and decalcification heavy metal removal device to solve the problems of low fly ash water washing dechlorination efficiency, high decalcification and heavy metal removal cost, easy precipitation of ash at the bottom and high solid content, which easily leads to failure of flue gas aeration device.

[0030] Embodiment 1

[0031] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 1 This is a schematic diagram of a half-section structure of a fly ash water washing dechlorination and decalcification and heavy metal removal device disclosed in an embodiment of the present invention. Figure 2 This is a schematic structural diagram of an auxiliary flushing device 2 of a fly ash water washing dechlorination and decalcification and heavy metal removal device disclosed in an embodiment of the present invention. Figure 3 This is a schematic diagram of the structure of an aeration device 8 of a fly ash water washing dechlorination and decalcification and heavy metal removal device disclosed in an embodiment of the present invention. Figure 4 This is a schematic diagram of the structure of the first agitator 3 of a fly ash water washing dechlorination and decalcification and heavy metal removal device disclosed in an embodiment of the present invention. Figure 5 This is a schematic diagram of the structure of a slurry cleaning device 6 of a fly ash water washing dechlorination and decalcification and heavy metal removal device disclosed in an embodiment of the present invention. Figure 6It is a schematic diagram of the structure of an aeration branch pipe 802 of a fly ash water washing, dechlorination, decalcification and heavy metal removal device disclosed in an embodiment of the present invention. A fly ash water washing, dechlorination and decalcification and heavy metal removal device, characterized in that it includes a reaction tank 1, an auxiliary flushing device 2, a suspended aeration device 8, and an agitator 3; the reaction tank 1 is a double-layer structure, the inner layer of the reaction tank 1 is higher than the outer layer, the bottom of the reaction tank 1 is a conical structure, and a slurry discharge pipe 5 is fixedly connected to the bottom of the reaction tank 1; a slurry feed pipe 7 is fixedly connected to the side wall of the reaction tank 1, and a one-way pressure valve 10 for controlling the liquid inlet speed and switch of the slurry feed pipe 7 is fixedly installed between the slurry feed pipe 7 and the reaction tank 1, and the top of the reaction tank 1 is detachably connected to the agitator 3 for stirring the slurry and the aeration device 8 for discharging smoke, and the stirring The device 3 includes a stirring motor 301, a first stirring shaft 302, and a first stirring blade 303. The stirring motor 301 provides output power to the first stirring shaft 302 to drive the first stirring blade 303 to rotate; the first stirring shaft 302 and the first stirring blade 303 are used to realize the stirring reaction of the fly ash liquid. The first stirring blade 303 is a rectangular blade structure. The first stirring blade 303 is provided with a plurality of through holes 304. The aeration device 8 includes: an aeration conveying pipe 801, an aeration main pipe 803, an aeration branch pipe 802, and a flushing pipe flange 804. The aeration conveying pipe 801 is connected to the fourth pipeline 204 at one end away from the reaction tank 1. The aeration conveying pipe 801 is connected to the fourth pipeline 204 at one end away from the reaction tank 1. The pipe 801 is located inside the reaction tank 1, and one end thereof is fixedly connected to the aeration main pipe 803, and the two sides of the aeration main pipe 803 are fixedly connected to the aeration branch pipes 802, and the aeration branch pipes 802 are open-hole structures, and the aeration branch pipes 802 are provided with aeration branch pipe holes 805, and the two ends of the aeration main pipe 803 are fixedly installed with the flushing pipe flanges 804; one end of the aeration device 8 is located inside the reaction tank 1, and the end away from the reaction tank 1 is fixedly connected to the auxiliary flushing device 2; the auxiliary flushing device 2 includes a first pipe 201, a second pipe 202, a third pipe 203, a fourth pipe 204, and a flushing adjustment device 208, and the flushing adjustment device 208 is fixedly connected with the first pipeline 201, the second pipeline 202, the third pipeline 203, and the fourth pipeline 204. The flushing regulating device 208 is a spherical structure with a through hole. A spherical receiving tube 206 is fixedly connected inside the flushing regulating device 208. A flushing regulating tube 207 is rotatably connected to the spherical receiving tube 206. A flushing regulating valve 205 for switching the connection state between the flushing regulating tube 207 and the first pipeline 201, the second pipeline 202, and the third pipeline 203 is fixedly connected to the outside of the flushing regulating tube 207. The flushing regulating device 208 is a connecting structure with the fourth pipeline 204;The auxiliary flushing device 2 is used to realize the switching of the three functions of the aeration device 8, namely, transporting carbon dioxide, high-pressure flushing of the aeration device 8, and pickling and descaling the aeration device 8. The end of the slurry discharge pipe 5 away from the reaction tank 1 is fixedly connected to a slurry pump 4 for sucking slurry. The end of the slurry discharge pipe 5 close to the reaction tank 1 is fixedly connected to a slurry cleaning device 6. The slurry cleaning device 6 includes a cleaning motor 601, a first cleaning shaft 602, a second cleaning shaft 603, and a cleaning rotating plate 604. One end of the first cleaning shaft 602 is fixedly connected to the cleaning motor 601, and the other end is fixedly connected to the second cleaning shaft 603. The second cleaning shaft 603 is fixedly installed with the cleaning rotating plate 604. The cleaning motor 601 provides output power for the first cleaning shaft 602. The first cleaning shaft 602 drives the second cleaning shaft 603 to rotate and then drives the cleaning rotating plate 604 to rotate. ;

[0032] In the embodiment of the present invention, the implementation process is to input fly ash liquid through the slurry feed pipe 7, use the stirring motor 301 to drive the first stirring shaft 302 to drive the first stirring blade 303 to stir, and the auxiliary flushing device 2 is switched to the second pipeline 202 to input high-temperature carbon dioxide into the reaction tank 1, so that it reacts with the fly ash liquid to obtain precipitation, and then the slurry cleaning device 6 and the slurry pump 4 are used in conjunction to discharge the slurry from the slurry discharge pipe 5 to the reaction tank 1; when the entire device is less blocked, the auxiliary flushing device 2 is switched to the first pipeline 201 to flush the reaction tank 1 with high pressure, and when the entire device is more seriously blocked, the flushing pipe flange 804 is opened, and the auxiliary flushing device 2 is switched to the third pipeline 203 to flush the residual precipitation in the reaction tank 1 by inputting an acidic reagent.

[0033] The beneficial effects of the present invention are as follows: the reaction tank of the present invention has a double-layer structure, the inner layer is higher than the outer layer, an overflow weir is formed to keep the liquid level in the reaction tank stable, the bottom of the reaction tank is a conical structure, which is convenient for the precipitation to be discharged from the reaction tank through the slurry discharge pipe, the aeration device inputs carbon dioxide to react with the heavy metals and calcium in the fly ash liquid and precipitate, a one-way pressure valve is used to control the input rate of the fly ash liquid, and the auxiliary flushing device is used to realize the switching of the three functions of the aeration device, namely, delivering carbon dioxide, high-pressure flushing of the aeration device, and pickling and descaling of the aeration device. The aeration device realizes a full reaction to the fly ash liquid, and when the aeration device is seriously blocked, the flushing pipe flange is opened for pickling and descaling, thereby extending the life of the aeration device. The stirring device has two different types, which can meet the needs of the device when it is working and when it is cleaned. The slurry cleaning device is used for cleaning, so that the slurry cleaning is faster and prevents blockage. The cleaning motor is used to drive the slurry cleaning speed, and the slurry discharge pipe can be blocked when the cleaning motor is not working.

[0034] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A fly ash water washing dechlorination and decalcification heavy metal removal device, characterized in that: It comprises a reaction tank (1), an auxiliary flushing device (2), a flue gas aeration device (8), and a stirrer (3); The reaction tank (1) is a double-layer structure, the inner layer of the reaction tank (1) is higher than the outer layer, the bottom of the reaction tank (1) is a conical structure, and the bottom of the reaction tank (1) is fixedly connected to a slurry discharge pipe (5); the side wall of the reaction tank (1) is fixedly connected to a slurry feed pipe (7), and a one-way pressure valve (10) for controlling the liquid feeding speed and switching of the slurry feed pipe (7) is fixedly installed between the slurry feed pipe (7) and the reaction tank (1); the top of the reaction tank (1) is detachably connected to the stirrer (3) for stirring the slurry and the aeration device (8) for introducing flue gas; one end of the aeration device (8) is located inside the reaction tank (1), and the end away from the reaction tank (1) is fixedly connected to the auxiliary flushing device (2).

2. A fly ash water washing dechlorination and decalcification heavy metal removal device according to claim 1, characterized in that: The auxiliary flushing device (2) comprises a first pipeline (201), a second pipeline (202), a third pipeline (203), a fourth pipeline (204), and a flushing regulating device (208); the flushing regulating device (208) is fixedly connected to the first pipeline (201), the second pipeline (202), the third pipeline (203), and the fourth pipeline (204); the flushing regulating device (208) is a spherical structure with a through hole; a spherical receiving tube (206) is fixedly connected inside the flushing regulating device (208); a flushing regulating tube (207) is rotatably connected to the spherical receiving tube (206); a flushing regulating valve (205) for switching the connection state between the flushing regulating tube (207) and the first pipeline (201), the second pipeline (202), and the third pipeline (203) is fixedly connected to the outside of the flushing regulating tube (207); the flushing regulating device (208) and the fourth pipeline (204) are in a connecting structure.

3. A fly ash water washing dechlorination and decalcification heavy metal removal device according to claim 2, characterized in that: The aeration device (8) comprises: an aeration delivery pipe (801), an aeration main pipe (803), an aeration branch pipe (802), and a flushing pipe flange (804); the aeration delivery pipe (801) is connected to the fourth pipe (204) at one end away from the reaction tank (1); the aeration delivery pipe (801) is located inside the reaction tank (1) and is fixedly connected to the aeration main pipe (803) at one end; the aeration main pipe (803) is fixedly connected to the aeration branch pipe (802) at both sides; the aeration branch pipe (802) is an open-hole structure; the flushing pipe flanges (804) are fixedly installed at both ends of the aeration main pipe (803); and the aeration branch pipe (802) is provided with an aeration branch pipe small hole (805).

4. The fly ash water washing dechlorination and decalcification heavy metal removal device according to claim 1, characterized in that: The stirrer (3) comprises a stirring motor (301), a first stirring shaft (302), and a first stirring blade (303); the stirring motor (301) provides output power to the first stirring shaft (302) to drive the first stirring blade (303) to rotate.

5. The fly ash water washing dechlorination and decalcification heavy metal removal device according to claim 4, characterized in that: The first stirring blade (303) is a platform-shaped blade structure, and a plurality of through holes (304) are provided on the first stirring blade (303).

6. The fly ash water washing dechlorination and decalcification heavy metal removal device according to claim 5, characterized in that: The end of the first stirring shaft (302) close to the first stirring blade (303) is a conical structure.

7. The fly ash water washing dechlorination and decalcification heavy metal removal device according to claim 1, characterized in that: A slurry cleaning device (6) is fixedly connected to the interior of the slurry discharge pipe (5) at one end close to the reaction tank (1), and a slurry pump (4) for sucking slurry is fixedly connected to the end of the slurry discharge pipe (5) away from the reaction tank (1).

8. The fly ash water washing dechlorination and decalcification heavy metal removal device according to claim 7, characterized in that: The slurry cleaning device (6) comprises a cleaning motor (601), a first cleaning rotating shaft (602), a second cleaning rotating shaft (603), and a cleaning rotating plate (604); one end of the first cleaning rotating shaft (602) is fixedly connected to the cleaning motor (601), and the other end is fixedly connected to the second cleaning rotating shaft (603); the cleaning rotating plate (604) is fixedly mounted on the second cleaning rotating shaft (603); the cleaning motor (601) provides output power for the first cleaning rotating shaft (602); the first cleaning rotating shaft (602) drives the second cleaning rotating shaft (603) to rotate and then drives the cleaning rotating plate (604) to rotate.

9. The fly ash water washing dechlorination and decalcification heavy metal removal device according to claim 1, characterized in that: A pressure valve switch (9) for controlling the one-way pressure valve (10) is fixedly connected to the outside of the reaction tank (1).

Images