CN213078649U

CN213078649U - Ball mill is used in production of gu sulphur lime-ash

Info

Publication number: CN213078649U
Application number: CN202021636155.1U
Authority: CN
Inventors: 任思谦; 王巍; 许刚
Original assignee: Shaanxi Zhengyuan Lindian Environmental Protection Industry Co ltd
Current assignee: Shaanxi Zhengyuan Lindian Environmental Protection Industry Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-04-30
Anticipated expiration: 2030-08-07

Abstract

The utility model relates to a ball mill is used in production of gu sulphur lime-ash relates to grinding device technical field, aims at solving the problem that the material adhesion is not convenient for clear up on grinding a section of thick bamboo inner wall among the correlation technique. It includes the base, be provided with on the base and grind a section of thick bamboo and drive arrangement, it includes the barrel to grind a section of thick bamboo, feeding end cover and ejection of compact end cover all with base fixed connection, barrel both ends opening sets up, and barrel one end rotates with the feeding end cover to be connected, the other end rotates with ejection of compact end cover to be connected, coaxial being provided with on the barrel be used for with drive arrangement complex ring gear, be provided with the scrubbing brush along barrel axis direction between feeding end cover and the ejection of compact end cover, and the scrubbing brush sets up in barrel inner chamber and keeps away from base one side, the brush. This application has just with the effect of clearing up the material of adhesion on grinding a section of thick bamboo inner wall.

Description

Ball mill is used in production of gu sulphur lime-ash

Technical Field

The utility model relates to a grinding device technical field especially relates to a ball mill is used in production of solid sulphur lime-ash.

Background

At present, with the popularization and application of the circulating fluidized bed coal-fired technology in thermal power plants, the discharged solid sulfur ash slag increases year by year, and the discharged solid sulfur ash slag is often used as building material for recycling treatment, namely used as a cement admixture. In the process of carrying out building material recycling treatment on the solid sulfur ash, the solid sulfur ash needs to be crushed, the solid sulfur ash is treated into particles meeting the requirement of the particle size of admixture, and a ball mill is a common device for crushing the solid sulfur ash. The ball mill is composed of a horizontal cylinder, a feeding and discharging hollow shaft, a grinding head and the like, wherein the cylinder is a long cylinder, and a grinding body is arranged in the cylinder and is generally a steel ball. The material is packed into the barrel by ball mill feed end hollow shaft in, when the ball mill barrel rotates, the rinding body is because inertia, centrifugal force and the effect of friction force, attaches on the barrel and is taken away by the barrel, when being taken to certain height, is thrown off because its own action of gravity, and the rinding body that falls smashes the material that falls on the material in with the barrel and gives and smash.

The utility model discloses a chinese utility model patent that publication number is CN205199621U discloses a ball mill, and it includes main motor, main motor passes through transmission and is connected with grinding the section of thick bamboo, and the drive grinds a section of thick bamboo and rotates, grinding a section of thick bamboo including feed inlet and discharge gate, be located the feed inlet lateral wall and be provided with the baffle, the baffle to grinding a section of thick bamboo inboard extension and form the slope column structure. The material is carried through the input pipeline from material input direction and is got into grinding the section of thick bamboo in, grinds the section of thick bamboo and is rotated by main motor drive, and the material constantly collides the extrusion in grinding the section of thick bamboo, and under powerful extrusion force, the material is smashed. The material is in a weightless state after being thrown up from the grinding cylinder, and in the weightless state, the material is thrown down in all directions. Wherein the material that is close to feed inlet or discharge gate one side can pound and hit a grinding section of thick bamboo lateral wall, and the baffle will obstruct pounding of material to a grinding section of thick bamboo, and pound the material of hitting on the baffle and slide to grinding section of thick bamboo inside along the baffle.

In view of the above-mentioned related art, the inventor believes that in actual production, materials can adhere to the inner wall of the grinding cylinder, and the defect that the materials are inconvenient to clean exists.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that the material of adhesion on grinding a section of thick bamboo inner wall is not convenient for clear up, this application provides a ball mill is used in production of solid sulphur lime-ash.

The application provides a ball mill is used in production of solid sulphur lime-ash, adopts following technical scheme:

the utility model provides a ball mill is used in production of gu sulphur lime-ash, includes the base, be provided with on the base and grind a section of thick bamboo and drive arrangement, it includes barrel, feeding end cover and ejection of compact end cover to grind a section of thick bamboo, feeding end cover and ejection of compact end cover all with base fixed connection, barrel both ends opening sets up, just barrel one end rotates with the feeding end cover to be connected, and the other end rotates with the ejection of compact end cover to be connected, coaxial being provided with on the barrel be used for with drive arrangement complex ring gear, be provided with the scrubbing brush along barrel axis direction between feeding end cover and the ejection of compact end cover, just the scrubbing brush set up in the barrel inner chamber is kept away from base one side, the brush hair.

By adopting the technical scheme, the adjusting driving device is started, the driving device drives the cylinder body to rotate through the gear ring, the grinding bodies and materials are added into the cylinder body through the feeding hole in the feeding end cover, when the cylinder body rotates, the grinding bodies and the materials are attached to the cylinder body and are driven by the cylinder body to be lifted upwards, the grinding bodies collide with each other to grind the materials clamped between the grinding bodies, when the grinding bodies reach a certain height, the grinding bodies are thrown down under the action of self gravity, the falling grinding bodies are thrown down onto the materials to break and crush the materials, and the crushed materials are discharged through the discharging hole in the discharging end cover; in the rotating process of the cylinder body, the brush and the cylinder body move relatively, and the bristles of the brush scrape materials adhered to the inner wall of the cylinder body. The grinding cylinder and the scrubbing brush of design, the barrel rotates for the brush hair of scrubbing brush carries out real-time cleaning to the barrel inner wall, and the clearance is effectual, has improved the problem that the material of adhesion on grinding the inner wall of a section of thick bamboo is not convenient for clear up greatly, simultaneously, has reduced the adhesion loss in solid sulphur ash, the sediment course of working, and resources are saved has reduced the maintenance number of times to the ball mill, and then has reduced the pollution of the raise dust that produces when clearing up the ball mill to the environment.

Preferably, the scrubbing brush with all be connected through elastic mechanism between feeding end cover and the ejection of compact end cover, elastic mechanism including set up in the loading board on feeding end cover or the ejection of compact end cover, be provided with between the fixed plate of loading board and scrubbing brush and make the compression spring of scrubbing brush and barrel inner wall butt.

Through adopting above-mentioned technical scheme, the elastic mechanism of design for elasticity butt between scrubbing brush and the barrel makes the brush hair of scrubbing brush still can keep with the butt of barrel inner wall after using a period wearing and tearing, has reduced the change cycle of scrubbing brush, simple structure, convenient and practical.

Preferably, the bearing plate is provided with a guide rod, the guide rod is arranged along the telescopic direction of the compression spring, and one end, far away from the bearing plate, of the guide rod penetrates through the fixing plate of the scrubbing brush.

Through adopting above-mentioned technical scheme, the guide bar of design leads to the scrubbing brush removal, prevents that the scrubbing brush from receiving the barrel to drive and take place the incline, guarantees on the one hand that the brush hair of scrubbing brush can normally clear up the barrel inner wall, and on the other hand reduces compression spring and receives the side direction load effect to produce the possibility of warping, guarantees compression spring's life.

Preferably, at least one group of supporting devices are arranged on the base below the barrel body, each supporting device comprises a supporting seat and a supporting plate arranged on the supporting seat, the top wall of the supporting plate is arc-shaped, and a plurality of balls abutted against the outer wall of the barrel body are arranged on the top wall of the supporting plate.

By adopting the technical scheme, the designed supporting device supports the cylinder body, and reduces the pressure of the cylinder body on the feeding end cover and the discharging end cover; the ball of design for change into rolling friction by sliding friction between barrel and the backup pad, reduce the barrel when rotating and the backup pad between frictional force, the barrel of being convenient for rotates and grinds a section of thick bamboo and seal.

Preferably, the driving device includes a first driving motor, a speed reducer and a driving gear, an output shaft of the first driving motor is connected to an input end of the speed reducer, the driving gear is connected to an output end of the speed reducer, and the driving gear is engaged with the gear ring.

By adopting the technical scheme, the first driving motor is adjusted to be started, the first driving motor drives the speed reducer to work, the speed reducer drives the driving gear to rotate, the driving gear drives the cylinder body to rotate through the gear ring, and the cylinder body drives the grinding body and the materials in the grinding cylinder to move so as to grind the materials; the designed driving device has simple structure, convenience and practicability.

Preferably, be provided with feed mechanism on the feed end lid, feed mechanism includes feeder hopper and conveyer pipe, the feed inlet of conveyer pipe and the discharge gate intercommunication of feeder hopper, the discharge gate of conveyer pipe with the feed inlet of feed end lid is connected, the coaxial propeller blade that is provided with in the conveyer pipe, be provided with the drive outside the conveyer pipe propeller blade pivoted second driving motor.

By adopting the technical scheme, materials are added into the feed hopper, the second driving motor is started, the second driving motor drives the propeller blades to rotate, and the propeller blades send the materials into the grinding cylinder through the conveying pipe for grinding and crushing; the feeding mechanism of design is convenient for carry out the continuous feeding in grinding the section of thick bamboo, and can adjust feed speed through adjusting propeller blade slew velocity, simple structure facilitates the use.

Preferably, a discharging mechanism is arranged on the discharging end cover and comprises a discharging pipe, an exhaust fan and a conveying pipe; the feed inlet of the discharge pipe is communicated with the discharge outlet of the discharge end cover, and a grid plate is arranged on the feed inlet of the discharge pipe; one end, far away from the discharging end cover, of the discharging pipe is connected with the side wall of the conveying pipe, the inner cavity of the discharging pipe is communicated with the inner cavity of the conveying pipe, and the included angle between the conveying pipe and a vertical plane where the axis of the discharging pipe is located is not more than 60 degrees; the base one end is kept away from to the air exhauster set up in the conveying pipeline, the air inlet of air exhauster with the conveying pipeline inner chamber intercommunication, just be provided with the filter screen on the air inlet of air exhauster.

By adopting the technical scheme, the exhaust fan is started, the exhaust fan performs air exhaust, a negative pressure environment is formed in the material conveying pipe and the material discharging pipe, air in the grinding cylinder is sucked out, the material crushed to reach the standard particle size is taken out while the air is sucked into the material discharging pipe, the material with the unqualified particle size is blocked by the grate plate to continue grinding and crushing, the material entering the material discharging pipe continues moving towards the material conveying pipe, one part of the material after the material conveying pipe leaves the material conveying pipe from one end of the material conveying pipe, which is far away from the exhaust fan, under the action of gravity to enter the next process, the other part of the material suspends in the inner cavity of the material conveying pipe under the action of the exhaust fan, and the exhaust fan is adjusted to be temporarily closed every other time, so that the material in the material conveying pipe leaves the; the designed discharging mechanism discharges materials under the action of negative pressure, and has a simple structure, convenience and practicability; the designed grid plate limits the discharged particle size of the material and ensures the crushing quality; the designed included angle between the vertical planes of the axes of the material conveying pipe and the material discharging pipe enables materials in the material conveying pipe to be discharged from the pipe opening at one end of the material conveying pipe, which is far away from the exhaust fan, under the action of self gravity, so that the possibility of blockage of the material conveying pipe is reduced; the filter screen of design avoids the material to be inhaled the air exhauster, guarantees that the air exhauster can normal use.

Preferably, the conveying pipeline is arranged along the vertical direction.

Through adopting above-mentioned technical scheme, the conveying pipeline sets up along vertical direction, and the material in the conveying pipeline of being convenient for falls under the action of gravity, and convenient collection reduces the accumulational possibility of material in the conveying pipeline.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the grinding cylinder and the scrubbing brush of design, the barrel rotates for the brush hair of scrubbing brush carries out real-time cleaning to the barrel inner wall, and the clearance is effectual, has improved the problem that the material of adhesion on grinding the inner wall of a section of thick bamboo is not convenient for clear up greatly, simultaneously, has reduced the adhesion loss in solid sulphur ash, the sediment course of working, and resources are saved has reduced the maintenance number of times to the ball mill, and then has reduced the pollution of the raise dust that produces when clearing up the ball mill to the environment.

2. The designed elastic mechanism enables the scrubbing brush to be elastically abutted with the cylinder body, so that the bristles of the scrubbing brush can still be abutted with the inner wall of the cylinder body after being worn for a period of time, the replacement period of the scrubbing brush is shortened, and the scrubbing brush is simple in structure, convenient and practical;

3. the designed supporting device supports the cylinder body and reduces the pressure of the cylinder body on the feeding end cover and the discharging end cover; the ball of design for change into rolling friction by sliding friction between barrel and the backup pad, reduce the barrel when rotating and the backup pad between frictional force, the barrel of being convenient for rotates and grinds a section of thick bamboo and seal.

Drawings

FIG. 1 is a schematic view of the overall structure of a ball mill for producing fluidized bed combustion ash in an embodiment of the present application.

FIG. 2 is a schematic sectional view of the ball mill for producing fluidized bed combustion ash in FIG. 1.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Description of reference numerals: 1. a base; 2. grinding the cylinder; 21. a barrel; 211. a ring gear; 22. a feed end cap; 23. a discharge end cover; 3. a drive device; 31. a first drive motor; 32. a speed reducer; 33. a driving gear; 4. scrubbing and brushing; 5. an elastic mechanism; 51. a carrier plate; 52. a compression spring; 53. a guide bar; 6. a support device; 61. a supporting seat; 62. a support plate; 63. a ball bearing; 7. a feeding mechanism; 71. a feed hopper; 72. a delivery pipe; 721. a propeller blade; 722. a second drive motor; 8. a discharging mechanism; 81. a discharge pipe; 811. a grid plate; 82. an exhaust fan; 821. a filter screen; 83. a delivery pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a ball mill is used in production of solid sulphur lime-ash. Referring to fig. 1, the ball mill for producing the fluidized bed combustion ash comprises a base 1, wherein a grinding cylinder 2, a supporting device 6 and a driving device 3 are arranged on the base 1.

Referring to fig. 1 and 2, the grinding cylinder 2 includes a cylinder body 21, a feeding end cover 22 and a discharging end cover 23, the feeding end cover 22 is provided with a feeding mechanism 7, the discharging end cover 23 is provided with a discharging mechanism 8, the feeding end cover 22 and the discharging end cover 23 are both welded and fixed with support columns on the base 1, openings at two ends of the cylinder body 21 are arranged, one end of the cylinder body 21 is rotatably connected with the feeding end cover 22, the other end of the cylinder body is rotatably connected with the discharging end cover 23, and the cylinder body 21 is coaxially welded with a gear ring 211 used for being matched with the driving.

Referring to fig. 1 and 2, the feeding mechanism 7 includes a conveying pipe 72 welded on the feeding end cover 22 and a feeding hopper 71 welded on the conveying pipe 72, a feeding port of the conveying pipe 72 is communicated with a discharging port of the feeding hopper 71, a discharging port of the conveying pipe 72 is connected with the feeding port of the feeding end cover 22, a propeller blade 721 is coaxially arranged in the conveying pipe 72, the propeller blade 721 includes a rotating shaft and a helical blade, a second driving motor 722 is arranged on an extending section of the rotating shaft extending out of the conveying pipe 72, and an output shaft of the second driving motor 722 is concentrically connected with the rotating shaft through a coupling.

Referring to fig. 1 and 2, the discharging mechanism 8 includes a discharging pipe 81, an exhaust fan 82, and a conveying pipe 83. The discharging pipe 81 is welded on the discharging end cover 23, the feeding hole of the discharging pipe 81 is communicated with the discharging hole of the discharging end cover 23, and a grid plate 811 is fixed on the feeding hole of the discharging pipe 81 through bolts. Discharging pipe 81 is kept away from discharge end cover 23 one end and conveying pipeline 83 lateral wall welded fastening, discharging pipe 81 inner chamber and conveying pipeline 83 inner chamber through seting up with the through-hole intercommunication on the conveying pipeline 83 lateral wall, and conveying pipeline 83 is not more than 60 degrees with the vertical planar contained angle in discharging pipe 81 axis place, and in this embodiment, conveying pipeline 83 is 0 degree with the vertical planar contained angle in discharging pipe 81 axis place, and conveying pipeline 83 sets up along vertical direction promptly. Exhaust fan 82 is installed in the delivery pipeline 83 and is kept away from base 1 one end, and the intake pipe of exhaust fan 82 and delivery pipeline 83 keep away from base 1 one end welded connection for the air inlet of exhaust fan 82 and the delivery pipeline 83 inner chamber intercommunication, bolted connection has filter screen 821 on the air inlet of exhaust fan 82.

Referring to fig. 1, the driving device 3 includes a first driving motor 31, a speed reducer 32, and a driving gear 33, an output shaft of the first driving motor 31 is concentrically connected to an input end of the speed reducer 32 through a coupling, the driving gear 33 is concentrically connected to an output end of the speed reducer 32 through a transmission shaft, and the driving gear 33 is engaged with a ring gear 211.

Referring to fig. 1 and 2, two sets of supporting devices 6 are arranged on the base 1 below the cylinder 21, each supporting device 6 includes a supporting seat 61 welded on the base 1 and a supporting plate 62 welded on the supporting seat 61, the top wall of the supporting plate 62 is arc-shaped, and a plurality of balls 63 abutted against the outer wall of the cylinder 21 are embedded on the top wall of the supporting plate 62.

Referring to fig. 2 and 3, in order to clean up the material adhered to the inner wall of the cylinder 21, a scrubbing brush 4 is arranged between the feeding end cover 22 and the discharging end cover 23 along the axial direction of the cylinder 21, and the scrubbing brush 4 is arranged in the inner cavity of the cylinder 21 and far away from one side of the base 1, the scrubbing brush 4 is connected with the feeding end cover 22 and the discharging end cover 23 through an elastic mechanism 5, the elastic mechanism 5 comprises a bearing plate 51 arranged on the feeding end cover 22 or the discharging end cover 23, a guide rod 53 is welded on the bearing plate 51, the guide rod 53 is arranged along the axial direction of the cylinder 21, and one end of the bearing plate 51, which is far away from the guide rod 53, penetrates through a fixing plate of the scrubbing brush 4, a compression spring 52 is sleeved on the guide rod 53 between the bearing plate 51 and the fixing plate of the scrubbing.

The implementation principle of the ball mill for producing the solid sulfur clinker is as follows: the first driving motor 31 is adjusted to start, the first driving motor 31 drives the speed reducer 32 to work, the speed reducer 32 drives the driving gear 33 to rotate, and the driving gear 33 drives the barrel 21 to rotate through the gear ring 211. The feed hopper 71 is filled with the material, the second driving motor 722 is started, the second driving motor 722 drives the propeller blade 721 to rotate, and the propeller blade 721 feeds the material into the grinding cylinder 2 through the conveying pipe 72. When the cylinder 21 rotates, the grinding bodies and the materials are attached to the cylinder 21 and driven by the cylinder 21 to be lifted upwards, the grinding bodies collide with each other to grind the materials clamped between the grinding bodies, the materials are thrown off under the action of self gravity after reaching a certain height, and the falling grinding bodies are thrown off on the materials to break and crush the materials. Meanwhile, in the rotation process of the cylinder 21, the brush and the cylinder 21 move relatively, and the bristles of the brush scrape the materials adhered to the inner wall of the cylinder 21. After the materials are ground for a period of time, the exhaust fan 82 is started, the exhaust fan 82 exhausts the air, negative pressure environments are formed in the material conveying pipe 83 and the material discharging pipe 81, air in the grinding cylinder 2 is sucked into the material discharging pipe 81, the materials with the standard particle size are taken out, the materials with the unqualified particle size are blocked by the grate plate 811 to continue grinding and crushing, the materials entering the material discharging pipe 81 continue moving towards the material conveying pipe 83, one part of the material conveying pipe 83 is separated from the material conveying pipe 83 from one end of the material conveying pipe 83 away from the exhaust fan 82 under the action of gravity to enter the next process, the other part of the material conveying pipe 83 is suspended in the inner cavity of the material conveying pipe 83 under the action of the exhaust fan 82, the exhaust fan 82 is adjusted to be temporarily closed every other end time, so that the materials in the material conveying pipe 83 leave the material conveying pipe 83 under the action of.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a production of gu sulphur lime-ash is with ball mill, includes base (1), be provided with on base (1) and grind a section of thick bamboo (2) and drive arrangement (3), its characterized in that: grind a section of thick bamboo (2) including barrel (21), feeding end cover (22) and ejection of compact end cover (23) all with base (1) fixed connection, barrel (21) both ends opening sets up, just barrel (21) one end rotates with feeding end cover (22) to be connected, and the other end rotates with ejection of compact end cover (23) to be connected, coaxial being provided with on barrel (21) be used for with drive arrangement (3) complex ring gear (211), be provided with scrubbing brush (4) along barrel (21) axis direction between feeding end cover (22) and ejection of compact end cover (23), just scrubbing brush (4) set up in barrel (21) inner chamber is kept away from base (1) one side, the brush hair and barrel (21) inner wall butt of scrubbing brush (4).

2. The ball mill for producing fluidized bed combustion ash according to claim 1, wherein: scrubbing brush (4) with all connect through elastic mechanism (5) between feeding end cover (22) and the ejection of compact end cover (23), elastic mechanism (5) including set up in loading board (51) on feeding end cover (22) or ejection of compact end cover (23), be provided with between the fixed plate of loading board (51) and scrubbing brush (4) make scrubbing brush (4) and barrel (21) inner wall butt compression spring (52).

3. The ball mill for producing fluidized bed combustion ash according to claim 2, wherein: the blackboard eraser is characterized in that a guide rod (53) is arranged on the bearing plate (51), the guide rod (53) is arranged along the telescopic direction of the compression spring (52), and one end, far away from the bearing plate (51), of the guide rod (53) penetrates through a fixing plate of the blackboard eraser (4).

4. The ball mill for producing fluidized bed combustion ash according to claim 1, wherein: at least one group of supporting devices (6) are arranged on the base (1) below the barrel body (21), each supporting device (6) comprises a supporting seat (61) and a supporting plate (62) arranged on the supporting seat (61), the top wall of each supporting plate (62) is arc-shaped, and a plurality of balls (63) abutted to the outer wall of the barrel body (21) are arranged on the top wall of each supporting plate (62).

5. The ball mill for producing fluidized bed combustion ash according to claim 1, wherein: the driving device (3) comprises a first driving motor (31), a speed reducer (32) and a driving gear (33), an output shaft of the first driving motor (31) is connected with an input end of the speed reducer (32), the driving gear (33) is connected with an output end of the speed reducer (32), and the driving gear (33) is meshed with the gear ring (211).

6. The ball mill for producing fluidized bed combustion ash according to claim 1, wherein: be provided with feed mechanism (7) on feeding end cover (22), feed mechanism (7) include feeder hopper (71) and conveyer pipe (72), the feed inlet of conveyer pipe (72) and the discharge gate intercommunication of feeder hopper (71), the discharge gate of conveyer pipe (72) with the feed inlet of feeding end cover (22) is connected, coaxial screw blade (721) that is provided with in conveyer pipe (72), conveyer pipe (72) are provided with the drive outward screw blade (721) pivoted second driving motor (722).

7. The ball mill for producing fluidized bed combustion ash according to claim 1, wherein: the discharging end cover (23) is provided with a discharging mechanism (8), and the discharging mechanism (8) comprises a discharging pipe (81), an exhaust fan (82) and a conveying pipe (83); a feed inlet of the discharge pipe (81) is communicated with a discharge outlet of the discharge end cover (23), and a grid plate (811) is arranged on the feed inlet of the discharge pipe (81); one end, far away from the discharging end cover (23), of the discharging pipe (81) is connected with the side wall of the material conveying pipe (83), the inner cavity of the discharging pipe (81) is communicated with the inner cavity of the material conveying pipe (83), and the included angle of the material conveying pipe (83) and the vertical plane where the axis of the discharging pipe (81) is located is not more than 60 degrees; air exhauster (82) set up in base (1) one end is kept away from in conveying pipeline (83), the air inlet of air exhauster (82) with conveying pipeline (83) inner chamber intercommunication, just be provided with filter screen (821) on the air inlet of air exhauster (82).

8. The ball mill for producing fluidized bed combustion ash according to claim 7, wherein: the material conveying pipe (83) is arranged along the vertical direction.