CN112944925B - Waste sludge high-temperature sintering system - Google Patents

Abstract

The invention relates to the technical field of fire melting processing of hazardous wastes, in particular to a reduction smelting furnace for high-temperature melting of waste sludge, which comprises a plurality of reduction smelting furnaces and smoke collecting devices which are arranged in series, the smoke collecting device comprises a collecting main body, an air extracting box, an air extracting pipe, a first collecting pipe, a second collecting pipe, a fourth collecting pipe and a collecting hopper, the collecting hopper is internally provided with a cleaning scraper which is rotationally arranged, the top of the collecting hopper is provided with a driving component which drives the cleaning scraper to rotate and a valve component which controls the on-off of a communicating pipe, the cleaning scraper comprises a rotating bracket and a cutting edge, the rotating bracket is rotationally arranged in the collecting hopper, the cutting edge is positioned at the edge of the rotating bracket, this cutting edge is contradicted with the inside wall of collecting the fill and is set up, and this cutting edge is provided with the extension subassembly of drive cutting edge extension on the rotation axis of runing rest along the radial sliding who collects the fill and install on the runing rest.

Description

Waste sludge high-temperature sintering system

Technical Field

The invention relates to the technical field of pyrogenic process melting processing of hazardous wastes, in particular to a high-temperature sintering system for waste sludge.

Background

The granulating-drying-reducing smelting process of hazardous wastes is characterized by that firstly, the raw materials are pulverized and sieved according to different components, then the pulverized raw materials are made into a certain grain size by means of granulating machine, then the obtained product is fed into a deep drying furnace to make deep drying, finally the block-shaped sintered material is fed into a reducing smelting furnace to make smelting, and the sintered powder material is made into bricks, dried and fed into the smelting furnace to make smelting.

The waste sludge high-temperature sintering system can generate a large amount of smoke dust and tail gas to be treated in the reduction smelting and drying processes, the selection of the smoke gas treatment mainly depends on various factors such as the original smoke gas condition, the supply condition of an absorbent, the geographical condition of a factory, the utilization of byproducts, engineering investment, running cost and the like, and the principles of safety, reliability, advanced and reasonable technology, environmental protection emission and the like are followed.

In a patent with the patent application number of CN201911134747.5, a smelting furnace flue gas collecting device convenient to clean is disclosed, which comprises a collecting main body, wherein the outer surface of one side of the collecting main body is connected with an air extracting box through bolts, and the outer surface of one side of the air extracting box, which is far away from the collecting main body, is connected with an air extracting pipe through bolts; one end of the air exhaust pipe, far away from the air exhaust box, is connected with a first collecting pipe through a bolt, one end of the first collecting pipe, far away from the air exhaust box, is connected with a second collecting pipe through a bolt, one end of the second collecting pipe, far away from the first collecting pipe, is connected with a third collecting pipe through a bolt, one end of the third collecting pipe, far away from the second collecting pipe, is connected with a fourth collecting pipe through a bolt, and the outer surface of the lower end of the fourth collecting pipe is welded with a fifth collecting pipe; the outer surface of one side of the collecting main body is connected with a high-pressure water pump through bolts, and a first water delivery pipe is fixedly mounted at the upper end of the high-pressure water pump.

However, in the process of cleaning and collecting smoke, the cleaning scraper of the smoke collecting device disclosed in the patent is worn in the long-term cleaning process, so that the subsequent cleaning work becomes inefficient.

Disclosure of Invention

Aiming at the problems, the invention provides a waste sludge high-temperature sintering system, wherein a rotary cleaning scraper is arranged on each collecting hopper, the cleaning scrapers are used for scraping and cleaning the inner walls of the collecting hoppers, and an expansion component is matched, so that a cutting edge on each cleaning scraper is expanded outwards by extrusion force in the cleaning process, even if the cutting edge is partially worn, the cleaning efficiency can be improved by virtue of the extrusion force, the smoke dust removing effect is ensured, and the technical problem of low cleaning effect after the cleaning scrapers are worn in the long-term cleaning process is solved.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a waste sludge high temperature sintering system, includes drying furnace, reduction smelting furnace and the flue gas collection device that a plurality of range set up, the flue gas collection device includes:

the outer surface of one side of the collection main body is connected with an air pumping box through a bolt, and the outer surface of one side of the air pumping box, which is far away from the collection main body, is connected with an air pumping pipe through a bolt;

One end of the air exhaust pipe, which is far away from the air exhaust box, is connected with a first collecting pipe through a bolt, one end of the first collecting pipe, which is far away from the air exhaust box, is connected with a second collecting pipe through a bolt, one end of the second collecting pipe, which is far away from the first collecting pipe, is connected with a third collecting pipe through a bolt, one end of the third collecting pipe, which is far away from the second collecting pipe, is connected with a fourth collecting pipe through a bolt, and the diameters of the first collecting pipe, the second collecting pipe, the third collecting pipe and the fourth collecting pipe are gradually reduced along the axial direction of the first collecting pipe;

the first collecting pipe, the second collecting pipe, the third collecting pipe and the fourth collecting pipe are all provided with collecting hoppers which are communicated through communicating pipes, the collecting hoppers are arranged in a horn shape and are arranged on the corresponding drying furnace and the corresponding reduction smelting furnace, used for collecting flue gas, a cleaning scraper which is arranged in a rotating way is arranged in the collecting hopper, a driving component which drives the cleaning scraper to rotate and a valve component which controls the on-off of the communicating pipe are arranged at the top of the collecting hopper, the cleaning scraper comprises a rotating bracket and a cutting edge, the rotating bracket is rotatably arranged in the collecting hopper, the cutting edge is positioned at the edge of the rotating bracket, the cutting edge is abutted against the inner side wall of the collecting hopper and is slidably mounted on the rotating bracket along the radial direction of the collecting hopper, and an extension component for driving the cutting edge to extend is arranged on a rotating shaft of the rotating bracket;

The driving assembly controls the collecting hoppers on the first collecting pipe, the second collecting pipe, the third collecting pipe and the fourth collecting pipe to be sequentially opened and communicated with the air pumping pipe through a valve assembly.

As an improvement, the outer surface of one side of the collecting main body is connected with a high-pressure water pump through bolts, a first water delivery pipe is fixedly installed at the upper end of the high-pressure water pump, an exhaust box is fixedly installed on the outer surface of the upper end of the collecting main body, supporting foot posts are welded at corners of the outer surface of the lower end of the collecting main body, and a discharge hopper is fixedly installed in the middle of the outer surface of the lower end of the collecting main body;

a second water delivery pipe is arranged inside the collecting main body, one end of the second water delivery pipe is communicated with the first water delivery pipe, and a spray pipe is arranged on the outer surface of the lower end of the second water delivery pipe;

the inside of air-extracting box is provided with the air exhauster, the inside of air-exhausting box is provided with the exhaust fan, the gas outlet has been seted up to the upper end surface of air-exhausting box, the inside of gas outlet is inlayed and is had the filter screen.

As an improvement, the cutting edge is L-shaped, and the cutting edge comprises a cutter body and an edge part, wherein the cutter body is in a fan-shaped arrangement, and the edge part is arranged at the vertical edge of the cutter body.

As an improvement, the drive assembly comprises:

the driven synchronous belt wheel is arranged on a rotating shaft of the rotating bracket and rotates to drive the rotating bracket to rotate;

the driving synchronous belt wheel is arranged on one side of the driven synchronous belt wheel, and a driving motor for driving the driving synchronous belt wheel to rotate is arranged at the driving synchronous belt wheel; and

the synchronous belt is wound on the driven synchronous belt pulley and the driving synchronous belt pulley, and the driving synchronous belt pulley drives the driven synchronous belt pulley to rotate synchronously through the synchronous belt.

As an improvement, the valve assembly comprises:

the sun gear is sleeved on the rotating shaft of the rotating bracket and synchronously rotates along with the rotating shaft;

a planetary gear disposed about the circumferential array of sun gears, the planetary gear disposed in meshing engagement with the sun gears;

the gear ring is sleeved outside the planetary gear, inner teeth meshed with the planetary gear are arranged on the inner ring of the gear ring, and first outer tooth parts and second outer tooth parts which are arranged at intervals are arranged on the outer ring of the gear ring;

And the valve is arranged on the communicating pipe, and a valve rod of the valve is sleeved with a rotating gear which is correspondingly matched with the gear ring.

In a refinement, the first external teeth and the second external teeth have the same number of teeth and are each half of the number of teeth of the rotary gear.

In an improved mode, along the air exhaust direction of the first collecting pipe, the included angle alpha between a first external tooth part and a second external tooth part on the gear rings arranged on the adjacent collecting hoppers is gradually enlarged, and the angle difference beta is 1/2 of the covering angle gamma of the first external tooth part.

As an improvement, initially, the middle parts of the first external tooth parts of the gear rings arranged on the collecting hoppers on the first collecting pipe, the second collecting pipe, the third collecting pipe and the fourth collecting pipe are meshed with the rotating gear.

As an improvement, the rotating shaft is arranged in a hollow mode, a first groove and a second groove are formed in the side wall of the rotating shaft respectively, and a wedge-shaped portion is arranged at the end portion, opposite to the first groove, of the cutting edge.

As an improvement, the extension assembly comprises:

the mandrel penetrates through the hollow part of the rotating shaft, an extrusion block clamped in the first open groove is arranged on the mandrel, the extrusion block is arranged in a wedge shape, and the extrusion block and the wedge-shaped part are arranged in an extrusion matching manner;

The pendulum bob is hinged and mounted in the middle of the mandrel, penetrates through the second groove and is provided with a guide waist groove on a swing rod; and

and the guide pin shaft penetrates through the guide waist groove, and two ends of the guide pin shaft are arranged on the rotating shaft.

The invention has the beneficial effects that:

(1) according to the invention, the rotary cleaning scrapers are arranged on each collecting hopper, the inner walls of the collecting hoppers are scraped and cleaned by the cleaning scrapers, and the extension assemblies are matched, so that the cutting edges on the cleaning scrapers are outwardly extended under extrusion force in the cleaning process, the cleaning efficiency can be improved by virtue of the extrusion force even when the cutting edges are partially worn, the smoke dust cleaning effect is ensured, and the technical problem of low cleaning effect after the cleaning scrapers are worn in the long-term cleaning process is solved;

(2) the expansion assembly is started by means of centrifugal swinging of the pendulum bob driven by rotation of the cleaning scraper, so that the cutting edge is expanded outwards, and the centrifugal swinging of the pendulum bob can knock the collecting hopper, so that smoke dust scraped from the collecting hopper can better fall in a free state, and the dust can be better sucked away by the exhaust tube;

(3) According to the invention, the valve component is arranged on each collecting hopper, and the valve component is used for controlling the on-off of each collecting hopper, so that only one collecting hopper is always communicated with the exhaust pipe in the smoke dust cleaning process, and the rest collecting hoppers are in a state of being disconnected from the exhaust pipe, the supply of the maximum suction force of each collecting hopper is ensured, the smoke dust cleaned by the collecting hoppers is better collected, and the technical problem of insufficient suction force of the exhaust pipe in the cleaning process is solved;

(4) according to the invention, only one collecting hopper is always communicated with the exhaust pipe, and the other collecting hoppers are in a state of being disconnected from the exhaust pipe, so that only smoke generated by one collecting hopper is required to be processed each time in the cleaning process of the collecting main body, the workload of the collecting main body is reduced, and the smooth operation of the collecting main body is ensured;

(5) according to the invention, the valve component is driven to operate by the driving component for driving the cleaning scraper, so that the collecting hopper can still be cleaned by scraping in the process of being disconnected from the exhaust pipe, the working efficiency is greatly improved, the connection between the collecting hopper and the exhaust pipe is opened by scraping, the smoke generated by cleaning can be rapidly and intensively discharged, and the cleaning is quicker;

(6) According to the invention, the purpose of independently opening each collecting bucket is achieved by changing the included angle between the first outer tooth part and the second outer tooth part on each collecting bucket, and after cleaning is finished, all the collecting buckets are automatically and synchronously opened, so that the tightness of the on-off of each collecting bucket and the exhaust pipe is ensured.

In conclusion, the automatic cleaning device has the advantages of being rapid in cleaning, automatic and orderly and the like, and is particularly suitable for the technical field of fire melting treatment and processing of hazardous wastes.

Drawings

FIG. 1 is a schematic perspective view of a flue gas collection device according to the present invention;

FIG. 2 is a schematic side view of the flue gas collection device of the present invention;

FIG. 3 is a side cross-sectional structural schematic view of the flue gas collection apparatus of the present invention;

FIG. 4 is a schematic perspective view of the collecting hopper of the present invention;

FIG. 5 is a perspective view of a cleaning scraper according to the present invention;

FIG. 6 is a schematic sectional view of the blade of the present invention;

FIG. 7 is a schematic cross-sectional view of a collection hopper according to the present invention;

FIG. 8 is a schematic view of a partial structure of the collecting hopper of the present invention;

FIG. 9 is an enlarged view of the structure at A in FIG. 8;

FIG. 10 is a first schematic view of a top view of a ring gear of the present invention;

FIG. 11 is a schematic top view of a ring gear of the present invention;

FIG. 12 is a perspective view of an expansion assembly of the present invention;

FIG. 13 is a first cross-sectional view of an expansion assembly of the present invention;

FIG. 14 is an enlarged view of the structure at B in FIG. 13;

FIG. 15 is a schematic cross-sectional view of an expansion assembly of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example (b):

as shown in fig. 1 to 15, a high-temperature sintering system for waste sludge comprises a plurality of drying furnaces, a reduction smelting furnace and a flue gas collecting device which are arranged in an array, wherein the flue gas collecting device comprises:

the collecting device comprises a collecting main body 1, wherein the outer surface of one side of the collecting main body 1 is connected with an air pumping box 11 through bolts, and the outer surface of one side, away from the collecting main body 1, of the air pumping box 11 is connected with an air pumping pipe 2 through bolts;

one end of the exhaust pipe 2, which is far away from the exhaust box 11, is connected with a first collecting pipe 3 through a bolt, one end of the first collecting pipe 3, which is far away from the exhaust pipe 2, is connected with a second collecting pipe 4 through a bolt, one end of the second collecting pipe 4, which is far away from the first collecting pipe 3, is connected with a third collecting pipe 5 through a bolt, one end of the third collecting pipe 5, which is far away from the second collecting pipe 4, is connected with a fourth collecting pipe 6 through a bolt, and the diameters of the first collecting pipe 3, the second collecting pipe 4, the third collecting pipe 5 and the fourth collecting pipe 6 are gradually reduced along the axial direction of the first collecting pipe 3;

the first collecting pipe 3, the second collecting pipe 4, the third collecting pipe 5 and the fourth collecting pipe 6 are all provided with a collecting hopper 7 communicated through a communicating pipe 70, the collecting hopper 7 is arranged in a horn shape, the collecting hopper 7 is all arranged on a corresponding drying furnace and a corresponding reduction smelting furnace and is used for collecting flue gas, a cleaning scraper 71 which is arranged in a rotating way is arranged in the collecting hopper 7, the top of the collecting hopper 7 is provided with a driving component 72 for driving the cleaning scraper 71 to rotate and a valve component 73 for controlling the communicating pipe 70 to be switched on and off, the cleaning scraper 71 comprises a rotating bracket 711 and a cutting edge 712, the rotating bracket 711 is rotatably arranged in the collecting hopper 7, the cutting edge 712 is positioned at the edge of the rotating bracket 711, the cutting edge 712 is abutted against the inner side wall of the collecting hopper 7, and the cutting edge 712 is slidably arranged on the rotating bracket 711 along the radial direction of the collecting hopper 7, an expansion component 74 for driving the blade 712 to expand is arranged on the rotating shaft 710 of the rotating bracket 711;

The driving assembly 72 controls the collecting hoppers 7 on the first collecting pipe 3, the second collecting pipe 4, the third collecting pipe 5 and the fourth collecting pipe 6 to be sequentially opened and communicated with the air suction pipe 2 through a valve assembly 73.

The outer surface of one side of the collecting main body 1 is connected with a high-pressure water pump 12 through bolts, a first water delivery pipe 13 is fixedly installed at the upper end of the high-pressure water pump 12, an exhaust box 14 is fixedly installed on the outer surface of the upper end of the collecting main body 1, supporting foot posts 15 are welded at corners of the outer surface of the lower end of the collecting main body 1, and a discharge hopper 16 is fixedly installed in the middle of the outer surface of the lower end of the collecting main body 1;

a second water pipe 17 is arranged inside the collecting main body 1, one end of the second water pipe 17 is communicated with the first water pipe 13, and a spray pipe 18 is arranged on the outer surface of the lower end of the second water pipe 17;

the inside of air suction box 11 is provided with air exhauster 111, the inside of exhaust case 14 is provided with exhaust fan 141, gas outlet 142 has been seted up to the upper end surface of exhaust case 14, the inside of gas outlet 142 is inlayed and is had the filter screen.

Further, the cutting edge 712 is arranged in an L shape, the cutting edge 712 includes a cutter body 713 and an edge portion 714, the cutter body 713 is arranged in a fan shape, and the edge portion 714 is arranged at the vertical edge of the cutter body 713.

Further, the driving assembly 72 includes:

a driven timing pulley 721, the driven timing pulley 721 being provided on the rotation shaft 710 of the rotating bracket 711, the driven timing pulley 721 rotating to rotate the rotating bracket 711;

a driving synchronous pulley 722, the driving synchronous pulley 722 being disposed at one side of the driven synchronous pulley 721, the driving synchronous pulley 722 being provided with a driving motor 723 for driving the driving synchronous pulley 722 to rotate; and

the synchronous belt 724 is wound on the driven synchronous pulley 721 and the driving synchronous pulley 722, and the driving synchronous pulley 722 drives the driven synchronous pulley 721 to rotate synchronously through the synchronous belt 724.

As a preferred embodiment, the valve assembly 73 includes:

a sun gear 731, the sun gear 731 being fitted over the rotating shaft 710 of the rotating bracket 711, the sun gear 731 rotating synchronously with the rotating shaft 710;

planet gears 732 arranged in a circumferential array around the sun gear 731, the planet gears 732 being arranged in mesh with the sun gear 731;

an annulus 733, the annulus 733 being fitted around the outside of the pinion 732, an inner ring of the annulus 733 being provided with inner teeth 734 meshing with the pinion 732, and an outer ring of the annulus 733 being provided with first outer teeth 735 and second outer teeth 736;

And a valve 737, wherein the valve 737 is disposed on the communication pipe 70, and a valve rod of the valve 737 is sleeved with a rotary gear 738 correspondingly matched with the gear ring 733.

The number of the first outer teeth 735 is equal to that of the second outer teeth 736 and is half of that of the rotary gear 738.

Further, in the air suction direction of the first collecting pipe 3, an included angle α between the first external tooth portion 735 and the second external tooth portion 736 on the ring gear 733, which is provided on the adjacent collecting bucket 7, is gradually enlarged, and the angle difference β is 1/2 of the coverage angle γ of the first external tooth portion 735.

Initially, the middle of the first external tooth portion 735 of the ring gear 733 provided in the collecting bucket 7 of the first collecting pipe 3, the second collecting pipe 4, the third collecting pipe 5, and the fourth collecting pipe 6 is meshed with the rotary gear 738.

In a preferred embodiment, the rotating shaft 710 is hollow, a first opening 7101 and a second opening 7102 are respectively formed on a side wall of the rotating shaft 710, and a wedge portion 7121 is formed at an end of the blade 712 facing the first opening 7101.

Wherein the expansion component 74 comprises:

a mandrel 741, wherein the mandrel 741 is inserted into the hollow portion of the rotating shaft 710, an extrusion block 742 engaged with the first open slot 7101 is disposed on the mandrel 741, the extrusion block 742 is disposed in a wedge shape, and the extrusion block 742 and the wedge portion 7121 are disposed in an extrusion fit manner;

The pendulum 743 is hinged to the middle of the mandrel 741, the pendulum 743 penetrates through the second slot 7102, and a guide waist slot 745 is formed in a swing rod 744 of the pendulum 743; and

and the guide pin 746, the guide pin 746 is inserted into the guide waist groove 745, and both ends of the guide pin 746 are mounted on the rotating shaft 710.

It should be noted that, when the collecting hopper 7 is cleaned, the driving assembly 72 is first activated, the driving assembly 72 drives the cleaning scraper 71 to rotate, the soot on the inner arm of the collecting hopper 7 is scraped off by the cleaning scraper 71, and during the activation of the driving assembly 72, the driving assembly operates through the planetary gear train composed of the sun gear 731, the planet gears 732 and the ring gears 733, the first external teeth 735 on all the ring gears 733 are synchronously matched with the rotating gear 738 on the valve 737 to drive the valve 737 to rotate 90 ° to close, and then, due to the preset angle difference between the first external teeth 735 and the second external teeth 736 on each ring gear 733, the second external teeth 736 on the ring gear 733 with the smallest angle α is firstly matched with the rotating gear 738 to rotate the valve 737 to open, in this application, the collecting hopper 7 on the fourth collecting pipe 6 is preferably firstly opened, then, the third collecting pipe 5, the second collecting pipe 4 and the collecting hopper 7 on the first collecting pipe 3 are opened in sequence.

When the cleaning scraper 71 rotates, the pendulum bob 743 gradually swings to be horizontal by utilizing a rotating centrifugal force, the pendulum bob 743 drives the mandrel 741 to descend, the extrusion block 742 on the mandrel 741 extrudes the wedge-shaped part 7121 on the blade 712, so that the blade 712 is tightly collided with the inner wall of the collecting hopper 7 by virtue of extrusion force to scrape and clean smoke dust, and even after the blade 712 is used for a long time, the blade 712 can thoroughly drive and scrape and clean the inner wall of the collecting hopper 7 by virtue of the extrusion force.

It is further noted that, in order to close the valve 737 again after the second external teeth 736 are engaged with the rotating gear 738 after 180 degrees of rotation, the valve 737 is opened again only when the first external teeth 735 is engaged with the rotating gear 738 again, which ensures the synchronous opening of all the collecting hoppers 7.

It should be further noted that the planetary gear system consisting of the sun gear 731, the planetary gear 732 and the ring gear 733 can ensure that the cleaning scraper 71 has rotated for several revolutions under the condition that the ring gear 733 rotates for one revolution, thereby ensuring that the cleaning scraper 71 can completely clean the inner wall of the collecting hopper 7.

The rotating shaft 710 is provided with a fan at a position facing the communication pipe 70, and the cleaned smoke is guided and output by rotation of the fan.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. The utility model provides a waste sludge high temperature sintering system, includes drying furnace, reduction smelting furnace and the flue gas collection device that a plurality of range set up, its characterized in that, flue gas collection device includes:

the collecting device comprises a collecting main body (1), wherein the outer surface of one side of the collecting main body (1) is connected with an air pumping box (11) through bolts, and the outer surface of one side, far away from the collecting main body (1), of the air pumping box (11) is connected with an air pumping pipe (2) through bolts;

one end of the air exhaust pipe (2) far away from the air exhaust box (11) is connected with a first collecting pipe (3) through a bolt, one end of the first collecting pipe (3) far away from the air exhaust pipe (2) is connected with a second collecting pipe (4) through a bolt, one end of the second collecting pipe (4) far away from the first collecting pipe (3) is connected with a third collecting pipe (5) through a bolt, one end of the third collecting pipe (5) far away from the second collecting pipe (4) is connected with a fourth collecting pipe (6) through a bolt, and the diameters of the first collecting pipe (3), the second collecting pipe (4), the third collecting pipe (5) and the fourth collecting pipe (6) are gradually reduced along the axial direction of the first collecting pipe (3);

The first collecting pipe (3), the second collecting pipe (4), the third collecting pipe (5) and the fourth collecting pipe (6) are all provided with collecting hoppers (7) communicated through communicating pipes (70), the collecting hoppers (7) are arranged in a horn shape, the collecting hoppers (7) are all installed on corresponding drying furnaces and reduction smelting furnaces and used for collecting flue gas, cleaning scrapers (71) which are arranged in a rotating mode are arranged in the collecting hoppers (7), the top of each collecting hopper (7) is provided with a driving assembly (72) for driving the cleaning scrapers (71) to rotate and a valve assembly (73) for controlling the communicating pipes (70) to be switched on and off, each cleaning scraper (71) comprises a rotating support (711) and a cutting edge (712), each rotating support (711) is rotatably installed in each collecting hopper (7), and each cutting edge (712) is located at the edge of each rotating support (711), the cutting edge (712) is abutted against the inner side wall of the collecting hopper (7), the cutting edge (712) is installed on the rotating bracket (711) in a sliding manner along the radial direction of the collecting hopper (7), and an expanding component (74) for driving the cutting edge (712) to expand is arranged on a rotating shaft (710) of the rotating bracket (711);

The driving assembly (72) controls the collecting hoppers (7) on the first collecting pipe (3), the second collecting pipe (4), the third collecting pipe (5) and the fourth collecting pipe (6) to be sequentially opened through a valve assembly (73) to be communicated with the exhaust pipe (2);

the rotating shaft (710) is arranged in a hollow mode, a first open groove (7101) and a second open groove (7102) are formed in the side wall of the rotating shaft (710) respectively, and a wedge-shaped portion (7121) is arranged at the end portion, opposite to the first open groove (7101), of the cutting edge (712);

the extension assembly (74) comprises a mandrel (741), a pendulum bob (743) and a guide pin shaft (746), the mandrel (741) penetrates through the hollow portion of the rotating shaft (710), an extrusion block (742) clamped in the first slot (7101) is arranged on the mandrel (741), the extrusion block (742) is arranged in a wedge shape, the extrusion block (742) and the wedge-shaped portion (7121) are arranged in an extrusion fit manner, the pendulum bob (743) is hinged to the middle portion of the mandrel (741), the pendulum bob (743) penetrates through the second slot (7102), a guide waist slot (745) is formed in a swing rod (744) of the pendulum bob (743), the guide pin shaft (746) penetrates through the guide waist slot (745), and two ends of the guide pin shaft (746) are arranged on the rotating shaft (710).

2. The waste sludge high-temperature sintering system as claimed in claim 1, wherein a high-pressure water pump (12) is bolted to the outer surface of one side of the collecting main body (1), a first water delivery pipe (13) is fixedly installed at the upper end of the high-pressure water pump (12), an exhaust box (14) is fixedly installed on the outer surface of the upper end of the collecting main body (1), supporting foot pillars (15) are welded at corners of the outer surface of the lower end of the collecting main body (1), and a discharge hopper (16) is fixedly installed at the middle position of the outer surface of the lower end of the collecting main body (1);

a second water conveying pipe (17) is arranged inside the collecting main body (1), one end of the second water conveying pipe (17) is communicated with the first water conveying pipe (13), and a spraying pipe (18) is arranged on the outer surface of the lower end of the second water conveying pipe (17);

the inside of air suction box (11) is provided with air exhauster (111), the inside of air discharge box (14) is provided with exhaust fan (141), gas outlet (142) have been seted up to the upper end surface of air discharge box (14), the inside of gas outlet (142) is inlayed and is had the filter screen.

3. The waste sludge high-temperature sintering system as claimed in claim 1, wherein the cutting edge (712) is L-shaped, the cutting edge (712) comprises a blade body (713) and an edge portion (714), the blade body (713) is fan-shaped, and the edge portion (714) is disposed at a vertical edge of the blade body (713).

4. A waste sludge high temperature sintering system as claimed in claim 1 wherein the drive assembly (72) comprises:

a driven timing pulley (721), the driven timing pulley (721) being provided on a rotation shaft (710) of the rotating bracket (711), the driven timing pulley (721) rotating to rotate the rotating bracket (711);

the driving synchronous pulley (722) is arranged on one side of the driven synchronous pulley (721), and a driving motor (723) for driving the driving synchronous pulley (722) to rotate is arranged at the driving synchronous pulley (722); and

the synchronous belt (724) is wound on the driven synchronous belt wheel (721) and the driving synchronous belt wheel (722), and the driving synchronous belt wheel (722) synchronously drives the driven synchronous belt wheel (721) to rotate through the synchronous belt (724).

5. The waste sludge high temperature sintering system of claim 4 wherein the valve assembly (73) comprises:

a sun gear (731), wherein the sun gear (731) is sleeved on the rotating shaft (710) of the rotating bracket (711), and the sun gear (731) rotates synchronously with the rotating shaft (710);

Planet gears (732), said planet gears (732) being arranged around a circumferential array of said sun gear (731), the planet gears (732) being arranged in mesh with said sun gear (731);

the gear ring (733), the gear ring (733) is sleeved outside the planetary gear (732), inner teeth (734) meshed with the planetary gear (732) are arranged on the inner ring of the gear ring (733), and first outer teeth (735) and second outer teeth (736) arranged at intervals are arranged on the outer ring of the gear ring (733);

and the valve (737), the valve (737) set up in on communicating pipe (70), the cover is equipped with on the valve pole of this valve (737) and is in gear ring (733) corresponds complex rotary gear (738).

6. The high-temperature sintering system for waste sludge of claim 5, wherein the number of teeth of the first external tooth portion (735) is identical to that of the second external tooth portion (736) and is half of that of the rotating gear (738).

7. The high-temperature waste sludge sintering system according to claim 5, wherein an included angle α between the first external tooth portion (735) and the second external tooth portion (736) of the ring gear (733) provided on the adjacent collecting hopper (7) is gradually enlarged along the air suction direction of the first collecting pipe (3), and the angle difference β is 1/2 that the first external tooth portion (735) covers the angle γ.

8. The waste sludge high-temperature sintering system according to claim 5, wherein, initially, the middle part of the first external tooth part (735) of the gear ring (733) arranged on the collecting hopper (7) of the first collecting pipe (3), the second collecting pipe (4), the third collecting pipe (5) and the fourth collecting pipe (6) is meshed with the rotating gear (738).

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