Power plant boiler ash recovery method and device

Abstract

The invention provides a power plant boiler ash recovery method and device, and relates to the technical field of boiler ash cleaning. The power plant boiler ash recovery device comprises a boiler combustion chamber used for fuel combustion, an ash collecting hopper is fixedly connected to the middle of the bottom end of the boiler combustion chamber, a plurality of containing rollers are connected to the top end of the inner wall of the ash collecting hopper through adjusting assemblies and used for containing combustion materials, and an ash pot is installed at the bottom end of the inner wall of the ash collecting hopper and used for containing the combustion materials. The outer diameter of the top end of the ash pot is rotationally connected with a chute drum, and cleaning plates are fixedly connected to the four sides of the inner wall of the chute drum. By arranging the chute drum and the extrusion rod, in the process that the reciprocating motor drives the extrusion rod to reciprocate up and down, the extrusion rod extrudes a chute in the outer wall of the chute drum, so that the chute drum rotates to drive the cleaning plate to clean the inner wall of the ash pot, and the situation that ash is adhered to the inner wall and is difficult to clean after being accumulated on the inner wall for a long time is prevented; the cleaning efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of boiler ash cleaning, and in particular to a method and a device for recovering boiler ash in a power plant. Background Art

[0002] In modern power production, the generation of boiler ash is inevitable, especially in coal-fired power plants. Boiler ash not only occupies a large amount of land resources, but also pollutes the environment. Therefore, it is particularly important to develop effective ash recovery methods and devices.

[0003] When traditional boiler ash is recycled, incomplete combustion will result in two parts: ash and slag. The slag is somewhat large and inconvenient to clean. The ash will also easily adhere to the inner wall of the boiler due to untimely treatment, resulting in low cleaning efficiency and affecting subsequent combustion. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method and device for recovering ash from a power plant boiler, which solves the problem of low ash cleaning efficiency.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A power plant boiler ash recovery device, comprising:

[0006] A boiler combustion chamber for fuel combustion, wherein an ash hopper is fixedly connected to the middle of the bottom end of the boiler combustion chamber, and a plurality of placing rollers are connected to the top of the inner wall of the ash hopper through an adjusting component, and the placing rollers are used to place combustion materials, and an ash pot is installed at the bottom end of the inner wall of the ash hopper, and the outer diameter of the top of the ash pot is rotatably connected to a chute cylinder, and cleaning plates are fixedly connected to the four sides of the inner wall of the chute cylinder, and the bottom ends of the cleaning plates are tightly attached to the inner wall surface of the ash pot, and are used to clean the ash attached to the inner wall of the ash pot, and the middle of the left and right sides of the outer wall of the ash hopper are fixed A reciprocating motor is connected, and the driving ends of the reciprocating motors on both sides are connected to extrusion rods through reciprocating components, and the opposite ends of the extrusion rods on both sides are interlocked with the inner wall of the outer diameter of the chute barrel, and the extrusion rods are used to drive the chute barrel to rotate, and the outer wall of the extrusion rods is slidably connected to the inner wall of the ash hopper, and the inner wall of the extrusion rods is fixedly connected to an ash baffle plate, and the top of the opposite end of the ash baffle plate is fixedly connected to a push rod, and the top ends of the push rods on both sides are commonly fixedly connected to a spreading component, which is used to spread the distance between adjacent placement rollers to facilitate the falling of fuel ash;

[0007] A threaded plug is used to release ash, the outer wall of the threaded plug is connected to the bottom of the inner wall of the boiler combustion chamber by a thread, the top of the threaded plug penetrates the inner wall of the boiler combustion chamber and is interconnected with the bottom of the ash pot, a telescopic frame is fixedly connected to the bottom of the outer wall of the right end of the ash collecting hopper, a slide is slidably connected to the inner wall of the bottom end of the telescopic frame, a reset frame is fixedly connected to the bottom end of the slide, the inner wall of the reset frame is connected to the threaded plug by a twisting assembly, a recovery frame is placed directly below the ash collecting hopper, and a filter is installed in the middle of the inner wall of the recovery frame.

[0008] Preferably, the adjustment assembly includes a slider rotatably connected to the two ends of the placing roller, the outer walls of the slider are slidably connected to the inner wall of the boiler combustion chamber, the inner walls of the sliders on the same side are slidably connected to a sliding rod, both ends of the sliding rod are fixedly connected to the inner wall of the ash hopper, and a tension spring is connected between adjacent sliders, and the tension spring is sleeved on the outer wall of the sliding rod.

[0009] Preferably, the reciprocating assembly includes a turntable fixedly connected to the driving end of the reciprocating motor, an eccentric rod is rotatably connected to the edge of the opposite end of the turntable, a connecting rod is rotatably connected to the top of the eccentric rod, and the opposite end of the connecting rod is respectively fixedly connected to the outer end of the extrusion rod on both sides.

[0010] Preferably, the expansion assembly includes an upper push frame fixedly connected to the top end of the push rod, and a plurality of conical expansion plates are fixedly connected to the front and rear sides of the top end of the upper push frame. Rollers are rotatably connected to the upper sides of the inner walls of the conical expansion plates, and adjacent conical expansion plates and adjacent storage rollers are staggered in the vertical direction.

[0011] Preferably, the twisting assembly includes a pull plate slidably connected to the inner wall of the reset frame, the inner wall of the left end of the pull plate is rotatably connected to the lower side of the outer wall of the threaded plug, the bottom end of the threaded plug is fixedly connected to a large gear, the right side of the outer diameter of the large gear is meshed with a small gear, the bottom end of the pull plate is fixedly connected to a servo motor, the bottom end of the small gear is rotatably fixedly connected to the driving end of the servo motor, and the middle part of the right end of the pull plate passes through the outer wall of the reset frame.

[0012] Preferably, the inner walls at both ends of the pull plate are slidably connected with guide rods, both ends of the guide rods are fixedly connected to the inner wall of the reset frame, and the outer walls of the guide rods are sleeved with tension springs three, one end of the tension spring three is fixedly connected to the right end of the pull plate, and the other end of the tension spring three is fixedly connected to the inner wall of the reset frame.

[0013] Preferably, a plurality of tension springs 2 are fixedly connected to the top of the slide plate, and the tops of the tension springs 2 are fixedly connected to the inner wall of the telescopic frame.

[0014] Preferably, a method for recovering boiler ash from a power plant comprises the following steps:

[0015] Step 1. First, when the boiler combustion chamber is in use, the fuel inside the coal bunker will be transported to the top of the loading roller through the rear conveying pipe, and then it will be ignited by the igniter to heat the tube walls on the four sides of the inner wall of the boiler combustion chamber, thereby performing the boiler heating and power generation work;

[0016] Step 2. The finished ash will then fall into the ash pot at the bottom of the inner wall of the ash hopper at the gap between adjacent placement rollers. After cooling for a period of time, start the reciprocating motors on both sides to rotate the turntable and drive the eccentric rod to rotate, and then pull the connecting rod to slide up and down on the inner wall of the ash hopper, so that the top ash baffle plate slides up and down, thereby pushing the push rod to slide up and down on the inner wall of the ash hopper, and further making the upper push frame move up and down on the lower side of the placement roller, and then the conical support plate at the top of the upper push frame will be inserted into the gap between the two adjacent placement rollers during the up and down movement. The placement roller will roll under the support of the conical support plate and drive the sliders on both sides to slide on the outer wall of the slide rod, thereby compressing the tension spring 1, and under the reciprocating action, the ash or larger residue remaining above the placement roller will fall to the inner wall of the ash pot below;

[0017] Step 3. When the connecting rod moves up and down, it also drives the extrusion rod to move up and down, so that the extrusion rod can slide up and down in the inclined groove of the outer wall of the inclined groove cylinder, so that the inclined groove cylinder rotates at the top of the ash pot. Each reciprocating up and down movement rotates a certain distance, thereby driving the cleaning plate to scrape and clean the ash on the inner wall of the ash pot to prevent it from adhering to the inner wall and being difficult to clean;

[0018] Step 4. When opening the threaded plug at the bottom of the ash hopper, start the servo motor to drive the small gear to rotate, and then drive the large gear to drive the threaded plug to rotate on the inner wall of the pull plate. During the rotation of the threaded plug, it will move downward along the thread, and then the reset frame will move downward, so that the slide plate slides downward on the inner wall of the telescopic frame by pulling the tension spring 2, and after the threaded plug is completely rotated out from the bottom of the ash hopper, the pull plate will slide and retract into the inner wall of the reset frame along the guide rod under the pulling effect of the tension springs 3 on both sides, so that the threaded plug will quickly move to the side after being rotated out so as not to hinder the normal discharge of ash;

[0019] Step 5. After being discharged, the ash will fall into the inner wall of the recovery frame below and under the filtering effect of the filter net, the larger ash will be separated at the top and the smaller ash will fall below, and they will be collected separately to improve the safety of recycling.

[0020] The present invention provides a method and device for recovering boiler ash from a power plant, which has the following beneficial effects:

[0021] 1. The present invention arranges a conical expansion plate and a placing roller, so that the fuel placed inside the boiler combustion chamber is placed on the placing roller. When discharging, the reciprocating motor drives the conical expansion plate to move up and down, so that the adjacent placing rollers are reciprocatedly expanded and contracted, so that the incompletely burned materials fall from the gap of the placing rollers to the inside of the ash pot for centralized collection, so that the remaining burned ash in the boiler can quickly leave the boiler combustion chamber without affecting the next combustion.

[0022] 2. The present invention provides a chute cylinder and an extrusion rod, so that when the reciprocating motor drives the extrusion rod to move up and down, the extrusion rod squeezes the chute on the outer wall of the chute cylinder, and then the chute cylinder rotates to drive the cleaning plate to clean the inner wall of the ash pot, preventing the ash from accumulating on the inner wall for too long and adhering to the inner wall and being difficult to clean, thereby improving the cleaning efficiency.

[0023] 3. The present invention provides a threaded plug and a pull plate, so that when the ash is discharged for recycling, the user does not need to open the threaded plug at the bottom of the ash hopper, thereby improving the safety of recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0025] Figure 2 It is a cross-sectional schematic diagram of a boiler combustion chamber of the present invention;

[0026] Figure 3 It is a cross-sectional schematic diagram of the ash collecting hopper of the present invention;

[0027] Figure 4 It is a cross-sectional schematic diagram of the ash pot of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the upper push frame of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the extrusion rod of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the placing roller of the present invention;

[0031] Figure 8 It is a schematic diagram of the eccentric rod structure of the present invention;

[0032] Fig. 9 It is a schematic diagram of the recycling frame structure of the present invention;

[0033] Fig.10 It is a cross-sectional schematic diagram of the reset frame of the present invention.

[0034] Among them, 1. boiler combustion chamber; 2. ash hopper; 3. recovery frame; 4. filter screen; 5. telescopic frame; 6. reset frame; 7. storage roller; 8. push rod; 9. upper push frame; 10. ash pot; 11. inclined groove cylinder; 12. threaded plug; 13. reciprocating motor; 14. conical expansion plate; 15. roller; 16. extrusion rod; 17. ash baffle plate; 18. cleaning plate; 19. turntable; 20. connecting rod; 21. eccentric rod; 22. slide rod; 23. slider; 24. tension spring one; 25. tension spring two; 26. guide rod; 27. tension spring three; 28. pull plate; 29. ​​servo motor; 30. small gear; 31. slide plate; 32. large gear. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] like Figure 1 , Figure 7 and Fig. 9 As shown, an embodiment of the present invention provides a boiler ash recovery device for a power plant, including a boiler combustion chamber 1 for fuel combustion, an ash collecting hopper 2 is fixedly connected to the middle of the bottom end of the boiler combustion chamber 1, a slide bar 22 is fixedly connected to the front and rear sides of the top of the inner wall of the ash collecting hopper 2, a plurality of sliders 23 are slidably connected to the outer wall of the slide bar, and a placing roller 7 is connected to the opposite ends of the sliders on the front and rear sides for common rotation, a tension spring 24 is connected between adjacent sliders 23, and the tension springs 24 are all sleeved on the outer wall of the slide bar 22, the placing roller 7 is used to place combustion materials, a recovery frame 3 is placed directly below the ash collecting hopper 2, and a filter screen 4 is installed in the middle of the inner wall of the recovery frame 3.

[0038] Specifically, a fuel delivery channel is installed on the rear side of the outer wall of the boiler combustion chamber 1, and the bottom of the delivery channel is located directly above the placement roller 7, which is used to transport the fuel to the placement roller 7. Its delivery mechanism is inside the pipeline and belongs to the boiler's own component. An igniter is installed on the front side of the outer wall of the boiler combustion chamber 1. The igniter runs through the inside and outside of the boiler combustion chamber 1 and is used to ignite the fuel on the placement roller 7. The ash hopper 2 is used to recover the ash remaining after combustion for centralized treatment. The four sides of the inner wall of the boiler combustion chamber 1 are evenly fixedly connected with a pipe wall formed by a plurality of pipes, which are used to heat the internal liquid to perform power generation. The filter screen on the inner wall of the recovery frame 3 can be taken out by the handles on both sides, so as to facilitate the separate recovery of ash of different sizes. The recovery frame 3 can be pulled away from the ash hopper 2 by the lifting rings on both sides. The slider 23 below can be pulled back to a position that can carry the upper fuel under the action of the adjacent tension spring 24, and the slide bar 22 is used to guide the slider 23 to drive the placement rollers 7 to move closer or farther away from each other.

[0039] Example 2: Figure 3 , Figure 6 and Figure 8 As shown, an ash pot 10 is installed at the bottom end of the inner wall of the ash collecting hopper 2, and a chute cylinder 11 is rotatably connected to the outer diameter of the top end of the ash pot 10. Cleaning plates 18 are fixedly connected to the four sides of the inner wall of the chute cylinder 11. The bottom ends of the cleaning plates 18 are tightly attached to the inner wall surface of the ash pot 10, and are used to clean the ash attached to the inner wall of the ash pot 10. Reciprocating motors 13 are fixedly connected to the middle parts of the left and right sides of the outer wall of the ash collecting hopper 2, and the driving ends of the reciprocating motors 13 on both sides are fixedly connected to turntables 19. The edges of the opposite ends of the turntables 19 are rotatably connected to eccentric rods 21, and the tops of the eccentric rods 21 are rotatably connected to connecting rods 20. The opposite ends of the connecting rods 20 are fixedly connected to extrusion rods 16, and the opposite ends of the extrusion rods 16 on both sides are engaged with the inner walls of the outer diameter chute of the chute cylinder 11. The extrusion rods 16 are used to drive the chute cylinder 11 to rotate, and the outer wall of the extrusion rods 16 is slidably connected to the inner wall of the ash collecting hopper 2, and the inner wall of the extrusion rods 16 is fixedly connected to ash baffle plates 17.

[0040] Specifically, the reciprocating motors 13 on both sides are started uniformly by an external controller. When the reciprocating motors 13 drive the turntables 19 on both sides to rotate simultaneously, the eccentric rod 21 can be driven to rotate reciprocatingly up and down to push the connecting rod 2 to slide up and down on the inner wall of the ash collecting hopper 2, thereby driving the extrusion rod 16 to move up and down to squeeze the inclined groove of the outer wall of the inclined groove cylinder 11, thereby making the inclined groove cylinder 11 rotate and drive the internal cleaning plate 18 to clean the inner wall of the ash pot 10, and the ash baffle plate 17 can block the sliding gap of the connecting rod 20 to prevent the ash from escaping through the gap.

[0041] Example 3: Figure 4 and Figure 5As shown, the top of the opposite end of the ash baffle plate 17 is fixedly connected to a push rod 8, and the tops of the push rods 8 on both sides are commonly fixedly connected to an upper push frame 9. The front and rear sides of the top of the upper push frame 9 are fixedly connected to a plurality of conical expansion plates 14, and the upper sides of the inner walls of the conical expansion plates 14 are rotatably connected to rollers 15. Adjacent conical expansion plates 14 and adjacent placement rollers 7 are staggered in the vertical direction, so as to expand the distance between adjacent placement rollers 7 to facilitate the falling of fuel ash.

[0042] Specifically, the upper push frame 9 is used to carry the conical expansion plate 14. When the dust blocking plate 17 moves up and down, the push rod 8 will slide up and down. The push rod 8 drives the conical expansion plate 14 to be inserted up and down between adjacent placement rollers 7. The rollers 15 on the inner wall of the conical expansion plate 14 will rub against each other during the process of releasing from the placement roller 7, thereby causing the placement roller 7 to rotate.

[0043] Example 4: Figure 2 and Fig.10 As shown, a threaded plug 12 for releasing ash is provided, the outer wall of the threaded plug 12 is connected to the bottom of the inner wall of the boiler combustion chamber 1 through a thread, the top of the threaded plug 12 penetrates the inner wall of the boiler combustion chamber 1 and is mutually connected with the bottom end of the ash pot 10, the bottom of the outer wall of the right end of the ash collecting hopper 2 is fixedly connected with a telescopic frame 5, the inner wall of the bottom end of the telescopic frame 5 is slidably connected with a slide plate 31, the bottom end of the slide plate 31 is fixedly connected with a reset frame 6, the inner wall of the reset frame 6 is slidably connected with a pull plate 28, the inner wall of the left end of the pull plate 28 is rotatably connected to the lower side of the outer wall of the threaded plug 12, the bottom end of the threaded plug 12 is fixedly connected with a large gear 32, the right side of the outer diameter of the large gear 32 is meshed with a small gear 30, the bottom end of the pull plate 28 is fixedly connected with a servo motor 29, the bottom end of the small gear 30 is rotatably fixedly connected to the driving end of the servo motor 29, the middle part of the right end of the pull plate 28 penetrates the outer wall of the reset frame 6, the top of the slide plate 31 is fixedly connected with a plurality of tension springs 25, and the tops of the tension springs 25 are all fixedly connected to the inner wall of the telescopic frame 5.

[0044] Specifically, the threaded plug 12 is used to block the bottom of the ash pot 10. The servo motor 29 is started by an external motor to automatically open the threaded plug 12 to discharge the ash, thereby improving the safety of recycling. The servo motor 29 drives the small gear 30 to rotate, and then drives the large gear 32 to drive the threaded plug 12 to rotate on the inner wall of the pull plate 28. During the rotation of the threaded plug 12, it will move downward along the thread, thereby causing the reset frame 6 to move downward, so that the slide plate 31 slides downward on the inner wall of the telescopic frame 5 by pulling the tension spring 25, and after the threaded plug 12 is completely screwed out from the bottom of the ash hopper 2, the pull plate 28 will slide and retract into the inner wall of the reset frame 6 along the guide rod 26 under the pulling action of the tension springs 3 27 on both sides, so that the threaded plug 12 can be quickly moved to the side after being screwed out without hindering the normal discharge of ash.

[0045] A method for recovering boiler ash from a power plant comprises the following steps:

[0046] Step 1. First, when the boiler combustion chamber 1 is in use, the fuel inside the coal bunker will be transported to the top of the placement roller 7 through the rear conveying pipe, and then it will be ignited under the action of the igniter to heat the tube walls on the four sides of the inner wall of the boiler combustion chamber 1, thereby performing the boiler heating and power generation work;

[0047] Step 2. The ash after completion will be sprinkled into the ash pot 10 at the bottom of the inner wall of the ash hopper 2 at the gap between the adjacent placement rollers 7. After cooling for a period of time, the reciprocating motors 13 on both sides are started to rotate the turntable 19 and drive the eccentric rod 21 to rotate, and then the connecting rod 20 will be pulled to slide up and down on the inner wall of the ash hopper 2, so that the top ash baffle plate 17 will slide up and down, thereby pushing the push rod 8 to slide up and down on the inner wall of the ash hopper 2, and further make the upper push frame 9 move up and down on the lower side of the placement roller 7, and then the conical support plate 14 at the top of the upper push frame 9 will be inserted into the gap between the two adjacent placement rollers 7 during the up and down movement. The placement roller 7 will roll under the support of the conical support plate 14 and drive the sliders 23 on both sides to slide on the outer wall of the slide rod 22, thereby compressing the tension spring 1 24, and under the reciprocating action, the ash or larger residue remaining on the placement roller 7 will fall to the inner wall of the ash pot 10 below;

[0048] Step 3. When the connecting rod 20 moves up and down, it also drives the extrusion rod 16 to move up and down, so that the extrusion rod 16 can slide up and down in the inclined groove of the outer wall of the chute drum 11, so that the chute drum 11 rotates at the top of the ash pot 10, and each reciprocating up and down movement rotates a certain distance, thereby driving the cleaning plate 18 to scrape and clean the ash on the inner wall of the ash pot 10 to prevent it from adhering to the inner wall and being difficult to clean;

[0049] Step 4. When the threaded plug 12 at the bottom of the ash hopper 2 is opened, the servo motor 29 is started to drive the small gear 30 to rotate, and then the large gear 32 is driven to drive the threaded plug 12 to rotate on the inner wall of the pull plate 28. During the rotation of the threaded plug 12, it will move downward along the thread, thereby causing the reset frame 6 to move downward, so that the slide plate 31 slides downward on the inner wall of the telescopic frame 5 by pulling the tension spring 25, and after the threaded plug 12 is completely screwed out from the bottom of the ash hopper 2, the pull plate 28 will slide and retract into the inner wall of the reset frame 6 along the guide rod 26 under the pulling effect of the tension springs 27 on both sides, so that the threaded plug 12 is screwed out and quickly moves to the side without hindering the normal discharge of ash;

[0050] Step 5. After being discharged, the ash will fall into the inner wall of the recovery frame 3 below and under the filtering effect of the filter screen 4, the larger ash will be separated at the top and the smaller ash will fall below, and they will be collected separately to improve the safety of recycling.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power plant boiler ash recovery device, characterized in that: include: A boiler combustion chamber (1) for fuel combustion, wherein an ash collecting hopper (2) is fixedly connected to the middle of the bottom end of the boiler combustion chamber (1), and a plurality of placing rollers (7) are connected to the top of the inner wall of the ash collecting hopper (2) through an adjusting component, and the placing rollers (7) are used to place combustion materials, and an ash pot (10) is installed at the bottom end of the inner wall of the ash collecting hopper (2), and the top of the ash pot (10) is rotatably connected to a chute drum (11), and cleaning plates (18) are fixedly connected to the four sides of the inner wall of the chute drum (11), and the bottom ends of the cleaning plates (18) are tightly attached to the inner wall surface of the ash pot (10) and are used to clean the ash attached to the inner wall of the ash pot (10), and the middle of the left and right sides of the outer wall of the ash collecting hopper (2) are fixed A reciprocating motor (13) is connected, and the driving ends of the reciprocating motors (13) on both sides are connected to extrusion rods (16) through reciprocating components. The opposite ends of the extrusion rods (16) on both sides are mutually engaged with the inner wall of the outer diameter inclined groove of the inclined groove cylinder (11). The extrusion rods (16) are used to drive the inclined groove cylinder (11) to rotate. The outer wall of the extrusion rods (16) is slidably connected to the inner wall of the ash collecting hopper (2). The inner wall of the extrusion rods (16) is fixedly connected to an ash baffle plate (17). The top of the opposite end of the ash baffle plate (17) is fixedly connected to a push rod (8). The top ends of the push rods (8) on both sides are commonly fixedly connected to a spreading component, which is used to spread the distance between adjacent placement rollers (7) to facilitate the falling of fuel ash residue. A threaded plug (12) for releasing ash, the outer wall of the threaded plug (12) being connected to the bottom of the inner wall of the boiler combustion chamber (1) through a thread, the top of the threaded plug (12) penetrating the inner wall of the boiler combustion chamber (1) and being mutually connected with the bottom of the ash pot (10), a telescopic frame (5) being fixedly connected to the bottom of the outer wall of the right end of the ash collecting hopper (2), a slide plate (31) being slidably connected to the inner wall of the bottom end of the telescopic frame (5), a reset frame (6) being fixedly connected to the bottom end of the slide plate (31), the inner wall of the reset frame (6) being connected to the threaded plug (12) through a twisting assembly, a recovery frame (3) being placed directly below the ash collecting hopper (2), a filter screen (4) being installed in the middle of the inner wall of the recovery frame (3).

2. A power plant boiler ash recovery device according to claim 1, characterized in that: The adjustment component comprises a slider (23) rotatably connected to the two ends of the placing roller (7), the outer wall of the slider (23) is slidably connected to the inner wall of the boiler combustion chamber (1), the inner wall of the slider (23) on the same side is slidably connected to a slide rod (22), both ends of the slide rod (22) are fixedly connected to the inner wall of the ash hopper (2), and a tension spring (24) is connected between adjacent sliders (23), and the tension spring (24) is sleeved on the outer wall of the slide rod (22).

3. The power plant boiler ash recovery device according to claim 1, characterized in that: The reciprocating assembly comprises a turntable (19) fixedly connected to the driving end of the reciprocating motor (13); an eccentric rod (21) is rotatably connected to the edge of one opposite end of the turntable (19); a connecting rod (20) is rotatably connected to the top of the eccentric rod (21); and the connecting rod (20) is fixedly connected to the outer end of the extrusion rod (16) on both sides at one opposite end.

4. The power plant boiler ash recovery device according to claim 1, characterized in that: The spreading assembly comprises an upper push frame (9) fixedly connected to the top of the push rod (8), a plurality of conical spreading plates (14) are fixedly connected to the front and rear sides of the top of the upper push frame (9), the upper sides of the inner walls of the conical spreading plates (14) are rotatably connected to rollers (15), and adjacent conical spreading plates (14) and adjacent placement rollers (7) are staggered in the vertical direction.

5. The power plant boiler ash recovery device according to claim 1, characterized in that: The twisting assembly includes a pull plate (28) slidably connected to the inner wall of the reset frame (6); the inner wall of the left end of the pull plate (28) is rotatably connected to the lower side of the outer wall of the threaded plug (12); the bottom end of the threaded plug (12) is fixedly connected to a large gear (32); the right side of the outer diameter of the large gear (32) is meshingly connected to a small gear (30); the bottom end of the pull plate (28) is fixedly connected to a servo motor (29); the bottom end of the small gear (30) is rotatably fixedly connected to the driving end of the servo motor (29); and the middle part of the right end of the pull plate (28) passes through the outer wall of the reset frame (6).

6. The power plant boiler ash recovery device according to claim 5, characterized in that: The inner walls of the front and rear ends of the pull plate (28) are slidably connected to guide rods (26), both ends of the guide rods (26) are fixedly connected to the inner wall of the reset frame (6), and the outer wall of the guide rods (26) is sleeved with tension springs (27), one end of the tension springs (27) is fixedly connected to the right end of the pull plate (28), and the other end of the tension springs (27) is fixedly connected to the inner wall of the reset frame (6).

7. The power plant boiler ash recovery device according to claim 1, characterized in that: A plurality of tension springs (25) are fixedly connected to the top of the slide plate (31), and the tops of the tension springs (25) are fixedly connected to the inner wall of the telescopic frame (5).

8. A method for recovering boiler ash from a power plant, using a device for recovering boiler ash from a power plant as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1. First, when the boiler combustion chamber (1) is in use, the fuel inside the coal bunker is transported to the top of the storage roller (7) through the rear conveying pipe, and then ignited by the igniter to heat the tube walls on the four sides of the inner wall of the boiler combustion chamber (1), thereby performing the boiler heating and power generation work; Step 2. The finished ash will then fall into the ash pot (10) at the bottom of the inner wall of the ash hopper (2) through the gap between the adjacent placement rollers (7). After cooling for a period of time, the reciprocating motors (13) on both sides are started to rotate the turntable (19) and drive the eccentric rod (21) to rotate, and then pull the connecting rod (20) to slide up and down on the inner wall of the ash hopper (2), thereby causing the top ash baffle (17) to slide up and down, thereby pushing the push rod (8) to slide up and down on the inner wall of the ash hopper (2), further The upper push frame (9) moves up and down on the lower side of the placement roller (7), and then the conical expansion plate (14) at the top of the upper push frame (9) is inserted into the gap between two adjacent placement rollers (7) during the process of moving up and down. Under the expansion action of the conical expansion plate (14), the placement roller (7) rolls and drives the sliders (23) on both sides to slide on the outer wall of the slide rod (22), thereby compressing the tension spring 1 (24). Under the reciprocating action, the ash or larger residues remaining on the placement roller (7) fall to the inner wall of the ash pot (10) below. Step 3. When the connecting rod (20) moves up and down, it also drives the extrusion rod (16) to move up and down, so that the extrusion rod (16) can slide up and down in the inclined groove of the outer wall of the inclined groove cylinder (11), so that the inclined groove cylinder (11) rotates at the top of the ash pot (10). Each time it moves up and down reciprocatingly, it rotates a certain distance, thereby driving the cleaning plate (18) to scrape and clean the ash on the inner wall of the ash pot (10) to prevent it from adhering to the inner wall and being difficult to clean; Step 4. When the threaded plug (12) at the bottom of the ash hopper (2) is opened, the servo motor (29) is started to drive the small gear (30) to rotate, thereby driving the large gear (32) to drive the threaded plug (12) to rotate on the inner wall of the pull plate (28). During the rotation of the threaded plug (12), it will move downward along the thread, thereby causing the reset frame (6) to move downward, so that the slide plate (31) slides downward on the inner wall of the telescopic frame (5) by pulling the tension spring 2 (25), and after the threaded plug (12) is completely screwed out from the bottom of the ash hopper (2), the pull plate (28) will slide and retract into the inner wall of the reset frame (6) along the guide rod (26) under the pulling action of the tension spring 3 (27) on both sides, so that the threaded plug (12) can be quickly moved to the side after being screwed out without hindering the normal discharge of ash; Step 5. After being discharged, the ash will fall into the inner wall of the recovery frame (3) below and, under the filtering effect of the filter screen (4), the larger ash will be separated at the top and the smaller ash will fall to the bottom, and they will be collected separately, thereby improving the safety of recovery.

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