CN216964226U

CN216964226U - Mud base haydite raw meal ball raw materials preparation facilities

Info

Publication number: CN216964226U
Application number: CN202220289871.XU
Authority: CN
Inventors: 石玉敏; 王博文; 靳辉; 尹海; 刘文杰; 何雯雯
Original assignee: Liaoning Environmental Protection Industry Technology Research Institute Co ltd
Current assignee: Liaoning Environmental Protection Industry Technology Research Institute Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-07-15
Anticipated expiration: 2032-02-14

Abstract

The utility model belongs to the field of sludge-based ceramsite preparation, and particularly relates to a sludge-based ceramsite raw material ball preparation device which comprises a quantitative raw material tank, a paddle dryer and a thin-layer air drying device, wherein a reversible platform scale turnover plate is arranged in a quantitative cavity of the quantitative raw material tank, the paddle dryer comprises a hollow stirring shaft, a hollow stirring paddle, a dryer body, a jacket, a heat carrier inlet and a heat carrier outlet, the heat carrier carries out secondary heating and drying on a mixed material through the hollow stirring shaft and a hollow heating cavity between the dryer body and the jacket, the thin-layer air drying device comprises a conveying belt, a scraping plate and an air inlet and outlet pipeline, the scraping plate can process the mixed material into a thin-layer material, and the material is subjected to tertiary heating and drying through hot air. According to the utility model, the moisture content range of the sludge raw material selected from the sludge-based ceramsite is improved, the material drying effect is improved through three-level heating and drying, the process link and the time length required by the overall drying are shortened by combining with the thin-layer material drying, and the addition proportion of the sludge with high moisture content for firing the ceramsite by the sludge incineration is further improved.

Description

Mud base haydite raw meal ball raw materials preparation facilities

Technical Field

The utility model belongs to the field of preparation of sludge-based ceramsite, and particularly relates to a device for preparing a raw pellet raw material of sludge-based ceramsite.

Background

In the urban sewage treatment process, a large amount of residual sludge containing C, N, P organic matter components such as difficultly degradable organic matters and persistent organic matters, pollutants such as heavy metals which cannot be digested in the treatment process, pathogens, microorganisms and the like is generated. The residual sludge is not subjected to reduction, harmless and recycling treatment, so that secondary pollution is caused, and the environment is greatly damaged. At present, in municipal sewage treatment plants covering most cities and towns, the water content of residual sludge generated after sewage treatment is more than 80%, and the sludge needs to be dehydrated to 60% or lower before harmless and recycling treatment. China mainly treats sludge resource utilization in the directions of composting, burning, building material utilization and the like, but with the national guidance that sludge products cannot enter a food chain and the like, the sludge composting and consuming way is limited, and the research and development of sludge building material utilization technology need to be enhanced.

The sludge fired ceramsite belongs to the sludge resource disposal and utilization technology, and has good market prospect; however, the sintered ceramsite of sludge mainly has the defects of more limitation conditions of the moisture content of the selected sludge raw material, low addition amount of directly used sludge with high moisture content, less sludge utilization and the like.

Therefore, it is very important to dry sludge without deep dehydration by a short chain and incinerate the dried sludge for granulation.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems of the existing sludge resource treatment, the utility model aims to provide a device for preparing a raw material ball of sludge-based ceramsite. The preparation device effectively realizes direct short chain drying of sludge without deep dehydration and preparation of ceramsite raw material balls, improves the sludge dehydration effect, shortens the time required by sludge dehydration, and improves the addition ratio of sludge with high water content for firing ceramsite by sludge incineration.

The purpose of the utility model is realized by the following technical scheme:

the quantitative material tank is communicated with a feeding hole at one end of the paddle dryer, a reversible platform scale turning plate is arranged in a quantitative cavity in the quantitative material tank, and a discharging hole at the other end of the paddle dryer is communicated with the feeding hole of the thin-layer air drying equipment; be equipped with at least one set of stirring shaft group in the paddle desiccator, every set the stirring shaft group all includes cavity (mixing) shaft and cavity stirring rake, the cavity (mixing) shaft rotates and installs in the desiccator fuselage of paddle desiccator, it has multiunit cavity stirring rake to follow feeding direction intercommunication on the cavity (mixing) shaft, the one end intercommunication of cavity (mixing) shaft has first heat carrier import, other end intercommunication has first heat carrier export, desiccator fuselage outside cover has the jacket, form the cavity heating chamber between jacket and the desiccator fuselage, set up respectively on the jacket with the second heat carrier import and the second heat carrier export of cavity heating chamber intercommunication, advance a tub pipe-line connection through the heat carrier between first heat carrier import and the second heat carrier import, through heat carrier exit pipe-line connection between first heat carrier export and the second heat carrier export, the heat carrier inlet pipe pipeline and the heat carrier outlet pipe pipeline are respectively connected with a circulating pump; install the conveyer belt in the thin layer air-dries the equipment, the conveyer belt top is equipped with the scraper blade of rigid coupling on the thin layer air-dries equipment inner wall, material on the conveyer belt is scraped for the thin layer by the scraper blade when passing through between scraper blade and the conveyer belt, air inlet pipe and air-out pipeline have been seted up on the thin layer air-dries the equipment respectively, hot-blast the passing scraper blade that the air inlet pipe got into is flowed by the air-out pipeline.

Wherein: the quantitative raw material tanks are one or more, and when the quantitative raw material tanks are multiple, the quantitative raw material tanks are arranged side by side along the width direction of the paddle dryer; the quantitative material tank is characterized in that a feeding hole is formed above the quantitative material tank, a discharging hole is formed below the quantitative material tank, the platform scale turning plate is located between the feeding hole and the discharging hole of the quantitative material tank, and the discharging hole of the quantitative material tank is communicated with the feeding hole at one end of the paddle dryer.

The drier body is arc-shaped at the position below each set of stirring shaft group.

The hollow stirring paddle is T-shaped, and the transverse edge of the T-shaped stirring paddle is arc-shaped.

The number of the hollow stirring paddles in each group is four, the hollow stirring paddles are uniformly arranged along the circumferential direction of the hollow stirring shaft, the hollow stirring paddles in adjacent groups are arranged in a staggered mode, and the hollow stirring paddle in any group is located between the two hollow stirring paddles in the adjacent groups.

And the first heat carrier inlet, the second heat carrier inlet, the first heat carrier outlet and the second heat carrier outlet are respectively provided with a control valve capable of adjusting the flow of liquid/gas.

A first heat carrier inlet is formed in the position, close to the quantitative raw material tank, of the dryer body along the feeding direction, a first heat carrier outlet is formed in the position, far away from the quantitative raw material tank, of the dryer body, and the first heat carrier inlet is communicated with the first heat carrier outlet through a hollow stirring shaft; the position that presss from both sides the cover bottom and be close to quantitative head tank along the pay-off direction is equipped with the import of second heat carrier, keeps away from quantitative head tank's position is equipped with the export of second heat carrier, pass through between import of second heat carrier and the export of second heat carrier cavity heating chamber intercommunication.

The material is conveyed to the other end close to the second heat carrier inlet by the conveyor belt from one end of the thin-layer air drying equipment close to the second heat carrier outlet.

The upper part of the scraper is of a hollow structure for hot air to pass through, and hot air entering the air inlet pipeline passes through the hollow structure on the upper part of the scraper and then flows out of the air outlet pipeline.

The scraper blade is a plurality of that are parallel to each other, every the equal perpendicular to conveyer belt setting of scraper blade, the scraper blade is "protruding" type, the gas that the intake stack got into passes by "protruding" type upper portion both sides, again by the play tuber pipe says and flows.

The utility model has the advantages and positive effects that:

1. by adopting the preparation device, the sludge can be treated without deep dehydration, and the water content range of the sludge raw material selected from the sludge-based ceramsite is widened.

2. The utility model adopts a quantitative mixing multistage drying technology, realizes the moisture content reduction of multiple materials by short chains according to a proportion, shortens the time required by reducing the moisture content of the materials to granulation, and improves the addition ratio of sludge with high moisture content for firing the ceramsite by the sludge incinerator.

3. The utility model adopts a superposition design mode, increases the material drying way and reduces the required construction area of the equipment.

Drawings

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

FIG. 2 is a left side cross-sectional view of the present invention;

FIG. 3 is a schematic view of the quantitative feedstock tank of the present invention;

FIG. 4 is a left side view of FIG. 3;

FIG. 5 is a left side cross-sectional view of the paddle dryer of the present invention;

FIG. 6 is a schematic structural view of the thin layer air drying apparatus of the present invention;

FIG. 7 is a left side cross-sectional view of the thin layer seasoning apparatus of the present invention;

wherein: 1 is quantitative head tank, 2 is quantitative chamber, 3 is the platform scale board that turns over, 4 is the paddle desiccator, 5 is the cavity (mixing) shaft, 6 is the cavity stirring rake, 7 is the desiccator fuselage, 8 is the clamp cover, 9 is the import of first heat carrier, 10 is the import of second heat carrier, 11 is the export of first heat carrier, 12 is the export of second heat carrier, 13 is the thin layer air-dries equipment, 14 is the conveyer belt, 15 is the scraper blade, 16 is the air-inlet pipeline, 17 is the air-out pipeline.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-7, the utility model comprises a quantitative raw material tank 1, a paddle dryer 4 and a thin layer air drying device 13, wherein a feed inlet at one end of the paddle dryer 4 is communicated with the quantitative raw material tank 1, a quantitative cavity 2 in the quantitative raw material tank 1 is provided with a reversible platform scale turning plate 3, a discharge outlet at the other end of the paddle dryer 4 is communicated with a feed inlet of the thin layer air drying device 13, and a discharge outlet of the thin layer air drying device 13 is communicated with a subsequent treatment process; at least one stirring shaft group is arranged in the blade dryer 4, each stirring shaft group comprises a hollow stirring shaft 5 and a hollow stirring paddle 6, the hollow stirring shaft 5 is rotatably arranged in a dryer body 7 of the blade dryer 4, the hollow stirring shaft 5 is communicated with a plurality of groups of hollow stirring paddles 6 along the feeding direction, one end of the hollow stirring shaft 5 is communicated with a first heat carrier inlet 9, the other end of the hollow stirring shaft 5 is communicated with a first heat carrier outlet 11, a jacket 8 is sleeved outside the dryer body 7, a hollow heating cavity is formed between the jacket 8 and the dryer body 7, a second heat carrier inlet 10 and a second heat carrier outlet 12 which are communicated with the hollow heating cavity are respectively arranged on the jacket 8, the first heat carrier inlet 9 and the second heat carrier inlet 10 are connected through a heat carrier inlet pipe pipeline, and the first heat carrier outlet 11 and the second heat carrier outlet 12 are connected through a heat carrier outlet pipe pipeline, the heat carrier inlet pipe pipeline and the heat carrier outlet pipe pipeline are respectively connected with a circulating pump; the thin layer air drying equipment 13 is internally provided with a conveyor belt 14, a scraper 15 fixedly connected to the inner wall of the thin layer air drying equipment 13 is arranged above the conveyor belt 14, materials on the conveyor belt 14 are scraped into thin layers by the scraper 15 when passing between the scraper 1 and the conveyor belt 14, and hot air entering the thin layer air drying equipment 13 through an air inlet pipeline 16 and an air outlet pipeline 17, which are respectively provided with an air inlet pipeline 16, passes through the scraper 15 and flows out through the air outlet pipeline 17.

The quantitative raw material tank 1 is one or more, and when the quantitative raw material tank is multiple, the quantitative raw material tanks are arranged side by side along the width direction of the paddle dryer 4; in the embodiment, four quantitative raw material tanks 1 are arranged side by side along the width direction of a paddle dryer 4, a feed inlet is arranged above each quantitative raw material tank 1, a discharge outlet is arranged below each quantitative raw material tank 1, and a platform scale turning plate 3 is positioned between the feed inlet and the discharge outlet of each quantitative raw material tank 1 and is close to the bottom of a quantitative cavity 2; the platform scale of this embodiment turns over board 3 is prior art, can add multiple raw materials ration in proportion according to the preset condition, and when adding the raw materials and reaching the settlement weight, one side that the platform scale turned over board 3 overturns downwards promptly, and the raw materials falls into paddle dryer 4 by ration chamber 2, and then the platform scale turns over board 3 and resets. The discharge hole of the quantitative raw material tank 1 is communicated with the feed inlet at one end of the paddle dryer 4.

The positions of the dryer body 7 below each set of stirring shaft group are both arc-shaped. Two sets of stirring shaft sets are arranged in the paddle dryer 4 of the embodiment, and the section of the dryer body 7 in the height direction is W-shaped.

In the embodiment, the hollow stirring paddle 6 is in a T shape, and the transverse edge of the T shape is in an arc shape; the number of the hollow stirring paddles 6 in each group is four, the hollow stirring paddles 6 are uniformly arranged along the circumferential direction of the hollow stirring shaft 5, namely the stirring shaft 5 is used as an axis to be oppositely arranged, the hollow stirring paddles 6 in adjacent groups are arranged in a staggered mode, namely the hollow stirring paddles 6 in any one group are positioned between the two hollow stirring paddles 6 in the adjacent groups.

In the embodiment, a first heat carrier inlet 9 is arranged at a position of the dryer body 7 close to the quantitative raw material tank 1 along the feeding direction, a first heat carrier outlet 11 is arranged at a position far away from the quantitative raw material tank 1, and the first heat carrier inlet 9 is communicated with the first heat carrier outlet 11 through a hollow stirring shaft 5; the position that presss from both sides 8 bottoms along the pay-off direction is close to quantitative feedstock tank 1 is equipped with second heat carrier import 10, keeps away from the position of quantitative feedstock tank 1 and is equipped with second heat carrier export 12, through cavity heating chamber intercommunication between second heat carrier import 10 and the second heat carrier export 12. The first heat carrier inlet 9, the second heat carrier inlet 10, the first heat carrier outlet 11 and the second heat carrier outlet 12 are all provided with control valves capable of adjusting the flow of liquid/gas.

The thin-layer air drying device 13 of the present embodiment is a material paving and drying device, and the conveyor belt 14 can convey the material from one end of the thin-layer air drying device 13 close to the second heat carrier outlet 12 to the other end close to the second heat carrier inlet 10. The upper part of the scraper 15 is a hollow structure for hot air to pass through, so that hot air conveyed by the air inlet pipeline 16 can be effectively distributed in the thin-layer air drying equipment 13, and hot air entering the air inlet pipeline 16 passes through the hollow structure on the upper part of the scraper 15 and then flows out of the air outlet pipeline 17. The scrapers 15 of this embodiment are parallel to each other and are arranged along the feeding direction, the distances between the scrapers 15 are equal (the distance between adjacent scrapers 15 of this embodiment is 10cm), each scraper 15 is perpendicular to the conveyor belt 14, the scrapers 15 are in a "convex" shape, and the air entering from the air inlet pipe 16 passes through two sides of the upper part of the "convex" shape and then flows out from the air outlet pipe 17.

The working principle of the utility model is as follows:

during operation, the types of raw materials are determined according to the requirements of the prepared sludge-based ceramsite, the sludge and other raw materials (such as building residue soil, clay, shale, fly ash, coal gangue and the like) are respectively placed into a quantitative cavity 2 of a quantitative raw material tank 1, the quantitative cavity 2 is provided with a platform scale turning plate 3, the platform scale turning plate 3 can measure the feeding quality, when the material quality reaches a preset condition, the platform scale turning plate 3 is turned downwards along the height direction of the quantitative cavity 2, the material is transferred into a paddle dryer 4 from the quantitative cavity 2 through a discharge port of the quantitative raw material tank 1, a hollow stirring shaft 5 is arranged in the paddle dryer 4, the hollow stirring shaft 5 is driven to rotate through external power to drive a hollow stirring paddle 6 to mix the materials, two ends of the hollow stirring shaft 5 along the feeding direction are respectively provided with a first heat carrier inlet 9 and a first heat carrier outlet 11, and during operation, a heat carrier (containing hot liquid/gas) is introduced to dry the mixed materials, meanwhile, a hollow heating cavity is formed by the drier body 7 and the jacket 8, a second heat carrier inlet 10 and a second heat carrier outlet 12 are arranged at the bottom of the jacket 8 along the feeding direction, a heat carrier (containing hot liquid/gas) is introduced to carry out secondary collaborative drying on the mixed material during operation, the first heat carrier inlet 9 and the second heat carrier inlet 10 are communicated through a heat carrier inlet pipe pipeline, the first heat carrier outlet 11 and the second heat carrier outlet 12 are communicated through a heat carrier outlet pipe pipeline, the heat carrier forms circulation outside the device through a circulating pump, the circulating heat carrier is heated through a heating pump or a terminal calcining process section, the dried material is transferred to the thin layer air drying device 13 through a discharge port of the paddle drier 4, the mixed material is transferred to a discharge port far away from one end of the thin layer air drying device 13 from a feed port at one end of the thin layer air drying device 13 through a conveyor belt 14, and passes through a scraper 15 in the transfer process of the mixed material, scraper 15 comprises three perpendicular to conveyer belt 14's scraper 15, scraper 15 is apart from conveyer belt 14 interval 2 ~ 3cm, the mixed material forms the thin layer material after strickleing off through scraper 15, drying performance promotes, thin layer air-dry equipment 13 is equipped with intake stack 16 along the other end that the pay-off direction is close to the discharge gate, the one end that is close to the feed inlet is equipped with out air duct 17, scraper 15 upper portion is hollow out construction, hot-blast accessible hollow out part is carried to air-out pipeline 17 by intake stack 16 and is carried out tertiary drying to the thin layer material, realize the multistage material drying structure of small volume, combine thin layer material drying performance to improve, reduce the dry required time of material and link, it is more energy-conserving to compare with traditional mummification technology.

Four quantitative material jar 1 are equipped with the platform scale in the respective ration chamber 2 and turn over board 3, and the platform scale turns over board 3 and can add material weight by the weighing, and according to predetermineeing weight value automatic control material mixture and add, after material quality reached predetermineeing numerical value, the platform scale turned over one side of board 3 and overturns downwards, shifts the material and mixes in the paddle dryer 4.

Blade desiccator 4 drives cavity stirring rake 6 hybrid material through cavity (mixing) shaft 5, and the heat carrier (can be the conduction oil) is carried to cavity (mixing) shaft 5 and cavity heating chamber in through first heat carrier import 9 and second heat carrier import 10, carries out dual drying to the hybrid material.

Thin layer air-dries equipment 13 and is equipped with conveyer belt 14 along the pay-off direction, can be with the material along the X axle by the feed inlet of thin layer air-dries equipment 13 one end transport to the discharge gate of thin layer air-dries equipment 13 other end, thin layer air-dries equipment 13 top is close to the one end of feed inlet and is equipped with by three groups perpendicular to conveyer belt 14's scraper blade 15, scraper blade 15 and conveyer belt 14 interval 2 ~ 3cm, conveyer belt 14 transports the material and handles the back through scraper blade 15, form the thin layer material, drying performance promotes, thin layer air-dries equipment 13 is equipped with the intake stack 16 that is used for into hot-blast usefulness, for avoiding scraper blade 15 to obstruct hot-blast transmission in thin layer air-dries equipment 13, design scraper blade 15 as "protruding" type structure, hot-blast accessible scraper blade 15 upper portion fretwork position is transmitted in thin layer air-dries equipment 13, carry out tertiary drying to the thin layer material.

The paddle dryer 4 and the thin layer air drying equipment 13 are overlapped along the height direction, and four end points of a horizontal plane with the length and the width are opposite up and down, so that the occupied area of the whole device is saved; meanwhile, the universal wheel can be arranged at the bottom of the device, so that the whole device can be conveniently transferred to the position close to external equipment such as a circulating pump, a heating pump or a fan.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims, rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The utility model provides a mud base haydite raw meal ball raw materials preparation facilities which characterized in that: the quantitative material drying device comprises a quantitative material tank (1), a paddle dryer (4) and a thin-layer air drying device (13), wherein a feed inlet at one end of the paddle dryer (4) is communicated with the quantitative material tank (1), a quantitative cavity (2) in the quantitative material tank (1) is provided with a reversible platform scale turning plate (3), and a discharge outlet at the other end of the paddle dryer (4) is communicated with a feed inlet of the thin-layer air drying device (13); be equipped with at least one set of stirring shaft group in paddle desiccator (4), every set stirring shaft group all includes cavity (mixing) shaft (5) and cavity stirring rake (6), cavity (mixing) shaft (5) rotate and install in desiccator fuselage (7) of paddle desiccator (4), it has multiunit cavity stirring rake (6) to go up along the pay-off direction intercommunication in cavity (mixing) shaft (5), the one end intercommunication of cavity (mixing) shaft (5) has first heat carrier import (9), the other end intercommunication has first heat carrier export (11), desiccator fuselage (7) outside cover has clamp cover (8), form cavity heating chamber (8) and desiccator fuselage (7) between, set up second heat carrier import (10) and second heat carrier export (12) with cavity heating chamber intercommunication on clamp cover (8) respectively, advance a tub pipe connection through the heat carrier between first heat carrier import (9) and second heat carrier import (10), the first heat carrier outlet (11) and the second heat carrier outlet (12) are connected through a heat carrier outlet pipe, and the heat carrier inlet pipe and the heat carrier outlet pipe are respectively connected with a circulating pump; install conveyer belt (14) in thin layer air-dries equipment (13), conveyer belt (14) top is equipped with rigid coupling scraper blade (15) on thin layer air-dries equipment (13) inner wall, material on conveyer belt (14) is scraped for the thin layer by scraper blade (15) when passing through between scraper blade (15) and conveyer belt (14), air inlet line (16) and air-out pipeline (17) have been seted up respectively on thin layer air-dries equipment (13), hot-blast scraper blade (15) of passing that air inlet line (16) got into flows by air-out pipeline (17).

2. The device for preparing the sludge-based ceramsite raw material ball as recited in claim 1, is characterized in that: the quantitative raw material tanks (1) are one or more, and when the quantitative raw material tanks are multiple, the quantitative raw material tanks are arranged side by side along the width direction of the paddle dryer (4); the quantitative material tank is characterized in that a feeding hole is formed above the quantitative material tank (1), a discharging hole is formed below the quantitative material tank (1), the platform scale turning plate (3) is located between the feeding hole and the discharging hole of the quantitative material tank (1), and the discharging hole of the quantitative material tank (1) is communicated with the feeding hole at one end of the paddle dryer (4).

3. The device for preparing the sludge-based ceramsite raw material ball according to claim 1, wherein the device comprises: the drier body (7) is arc-shaped at the position below each set of stirring shaft group.

4. The device for preparing the sludge-based ceramsite raw material ball as recited in claim 1, is characterized in that: the hollow stirring paddle (6) is T-shaped, and the transverse edge of the T-shaped stirring paddle is arc-shaped.

5. The device for preparing the sludge-based ceramsite raw material ball according to claim 1, wherein the device comprises: the number of the hollow stirring paddles (6) in each group is four, the hollow stirring paddles (6) are uniformly arranged along the circumferential direction of the hollow stirring shaft (5), the hollow stirring paddles (6) in adjacent groups are arranged in a staggered mode, and the hollow stirring paddles (6) in any group are located between two hollow stirring paddles (6) in the adjacent groups.

6. The device for preparing the sludge-based ceramsite raw material ball as recited in claim 1, is characterized in that: first heat carrier import (9), second heat carrier import (10), first heat carrier export (11) and second heat carrier export (12) all are equipped with the control flap of adjustable liquid/gas flow.

7. The device for preparing the sludge-based ceramsite raw material ball as recited in claim 1, is characterized in that: a first heat carrier inlet (9) is formed in the position, close to the quantitative raw material tank (1), of the dryer body (7) in the feeding direction, a first heat carrier outlet (11) is formed in the position, far away from the quantitative raw material tank (1), and the first heat carrier inlet (9) is communicated with the first heat carrier outlet (11) through a hollow stirring shaft (5); jacket (8) bottom is equipped with second heat carrier import (10), keeps away from along the position that the pay-off direction is close to quantitative head tank (1) the position of quantitative head tank (1) is equipped with second heat carrier export (12), pass through between second heat carrier import (10) and the second heat carrier export (12) cavity heating chamber intercommunication.

8. The device for preparing the sludge-based ceramsite raw material ball as recited in claim 1, is characterized in that: the material is conveyed to the other end close to the second heat carrier inlet (10) by the conveyor belt (14) from one end of the thin-layer air drying equipment (13) close to the second heat carrier outlet (12).

9. The device for preparing the sludge-based ceramsite raw material ball according to claim 1, wherein the device comprises: the upper part of the scraper (15) is of a hollow structure for hot air to pass through, and hot air entering the air inlet pipeline (16) passes through the hollow structure on the upper part of the scraper (15) and then flows out of the air outlet pipeline (17).

10. The device for preparing the sludge-based ceramsite raw material ball according to claim 9, wherein the device comprises: scraper blade (15) are a plurality of that are parallel to each other, every scraper blade (15) all perpendicular to conveyer belt (14) set up, scraper blade (15) are "protruding" type, the gas that intake stack (16) got into passes by "protruding" type upper portion both sides, again by air-out pipeline (17) flow.