CN114950732A - Built-in ash bucket accumulated ash removing coking-removing heat-preserving conveying device - Google Patents

Abstract

The invention discloses a built-in ash bucket accumulated ash removing coking-removing heat-preserving conveying device, and belongs to the technical field of high-temperature dust removal. The gear clamping and working instability of the ash scraping system due to high temperature of the existing electrostatic precipitator are easily caused, and moreover, the temperature loss problem exists in the high-temperature dust conveying process due to the fact that the conveyor cannot keep warm. The device includes: the two groups of ash collecting guide plates are arranged at the bottom in the high-temperature electrostatic dust collector and are used for collecting high-temperature dust from the high-temperature electrostatic dust collector; the ash removal system is arranged on the ash collection guide plate and is used for removing high-temperature dust on the ash collection guide plate; and the embedded scraper conveyer is arranged below the high-temperature electrostatic dust collector and is used for conveying the high-temperature dust to the feed opening.

Description

Built-in ash bucket accumulated ash removing coking-removing heat-preserving conveying device

Technical Field

The invention belongs to the technical field of high-temperature dust removal, and particularly relates to a built-in ash bucket ash-removing coking-removing heat-preserving conveying device.

Background

The ash content in the flue gas is collected through the negative and positive pole to the horizontal electrostatic precipitator of drum type, the ash content falls on the lower arc board of the horizontal electrostatic precipitator of drum type, and pile up in the lower part of the horizontal electrostatic precipitator of drum type, because pile up for a long time and lead to the autonomic ability of flowing of ash content relatively poor, if there is not external force to clear away accumulational ash content, then after the horizontal electrostatic precipitator of drum type operation a period, the height of ash content deposit can constantly increase, make the overlap joint of negative and positive pole, lead to the horizontal electrostatic precipitator of drum type to become invalid.

The ash scraping system which swings along the lower arc surface is arranged in the existing cylindrical horizontal electrostatic dust collector, when the ash scraping system swings along the lower arc surface, accumulated ash can be brought to an ash falling port at the right lower part of the cylindrical horizontal electrostatic dust collector, and then the ash can be discharged out of the cylindrical horizontal electrostatic dust collector along with the ash pulling device, so that the long-term stable operation of the cylindrical horizontal electrostatic dust collector is ensured.

In practical application, the ash scraping system drives high-temperature dust to move to an ash falling port to enter the buried scraper conveyor when swinging inside the equipment, and because the ash scraping system works in the cylindrical horizontal electrostatic dust collector and the temperature in the cylindrical horizontal electrostatic dust collector is higher, under a high-temperature working condition, a shell of the ash scraping system and the ash scraping mechanism are easy to expand, so that a moving gear is blocked, and the ash scraping system is frequently broken down; in addition, in the existing high-temperature type buried scraper conveyor, high-temperature-resistant materials are selected for the equipment, a water-cooling interlayer is arranged outside the casing of the equipment, and the equipment is cooled by circulating water to achieve the purpose of conveying the high-temperature materials. Or the upper part of the buried scraper conveyor shell is designed to be open and is fully contacted with the external environment, and the heat is fully dissipated, so that the purpose of conveying high-temperature materials is achieved.

In conclusion, the gear of the ash scraping system is blocked and the operation of the existing electrostatic precipitator is unstable due to high temperature, and moreover, the temperature loss problem exists in the high-temperature dust conveying process due to the fact that the conveyer cannot keep warm.

Disclosure of Invention

The embodiment of the invention provides a built-in ash bucket accumulated ash cleaning, coking and heat preservation conveying device, which is used for solving the problems that an existing electrostatic precipitator is easy to cause gear locking and unstable work of an ash scraping system due to high temperature, and a conveyor cannot preserve heat to cause temperature loss in a high-temperature dust conveying process.

The embodiment of the invention provides a built-in ash bucket dust-cleaning coking-removing heat-insulating conveying device, which comprises:

the two groups of ash collecting guide plates are arranged at the bottom in the high-temperature electrostatic dust collector and are used for collecting high-temperature dust from the high-temperature electrostatic dust collector;

the ash cleaning system is arranged on the ash collecting guide plate and is used for removing high-temperature dust on the ash collecting guide plate;

the embedded scraper conveyer is arranged below the high-temperature electrostatic dust collector and is used for conveying the high-temperature dust to a feed opening; the embedded scraper conveyor comprises an embedded scraper conveyor shell which is of a double-layer structure, and a heat insulation material is arranged between the double-layer structure.

Preferably, the ash collecting guide plate at least comprises a head end ash slipping plate and a tail end ash slipping plate, the lower part of the head end ash slipping plate and the upper part of the tail end ash slipping plate are both connected with the shell, and the upper part of the head end ash slipping plate is contacted with the lower part of the tail end ash slipping plate;

the front end ash slipping plate and the tail end ash slipping plate form an inclined angle of 20-70 degrees with the horizontal plane.

Preferably, the ash collecting guide plate further comprises at least 1 middle ash sliding plate, and two ends of the middle ash sliding plate are respectively contacted with the head end ash sliding plate and the tail end ash sliding plate;

the head end ash sliding plate and the horizontal plane form an inclined angle of 20 degrees, and the tail end ash sliding plate and the horizontal plane form an inclined angle of at least 20 degrees; or

The head end ash sliding plate and the horizontal plane form an inclined angle of 40 degrees, and the tail end ash sliding plate and the horizontal plane form an inclined angle of at least 40 degrees; or

The front end ash sliding plate and the horizontal plane form an inclination angle of 70 degrees, and the tail end ash sliding plate and the horizontal plane form an inclination angle of at least 70 degrees.

Preferably, a first heat-insulating layer is arranged between each group of the ash collecting guide plates and the high-temperature electrostatic dust collector shell, and a second heat-insulating layer is arranged on the high-temperature electrostatic dust collector shell;

the head end and the tail end of each group of the ash collecting guide plates are in sealing contact with the high-temperature electrostatic dust collector shell; and the two groups of ash collecting guide plates and the high-temperature electrostatic dust collector shell form a cavity.

Preferably, the ash removal system comprises:

the power gas inlet is arranged outside the high-temperature electrostatic dust collector, is connected with a power gas main pipeline and provides the high-temperature electrostatic dust collector with the pressurized temperature and oxygen-free gas;

the electromagnetic control valve is arranged on the power gas main pipeline and is positioned between a power gas inlet and the high-temperature electrostatic dust collector;

one end of the main power gas pipeline is positioned outside the high-temperature electrostatic dust collector, and the other end of the main power gas pipeline extends into the high-temperature electrostatic dust collector;

and the ash cleaning device is arranged on the ash collecting guide plate, is connected with the main power gas pipeline and is used for removing high-temperature dust accumulated on the ash collecting guide plate.

Preferably, the device further comprises a plurality of power gas branch pipes;

the outlet of the main power gas pipeline is vertically connected with a plurality of power gas branch pipes, the interval between every two adjacent power gas branch pipes is 0.2-2 m, and the outlet of each power gas branch pipe is provided with an ash removal device;

when the plurality of power pneumatic branch pipes are positioned on the middle ash sliding plate, the inclination angle of each power pneumatic branch pipe and the ash removal device is consistent with that of the middle ash sliding plate; or when the power pneumatic branch pipes are positioned on the head end ash sliding plate, the inclination angle of each power pneumatic branch pipe and the ash cleaning device is consistent with that of the head end ash sliding plate.

Preferably, the buried scraper conveyor shell comprises an inner shell and an outer shell, a heat insulation material is arranged between the inner shell and the outer shell, the feed inlet is arranged at the top of the buried scraper conveyor shell and is used for receiving high-temperature dust from a high-temperature electrostatic dust collector, and the temperature of the high-temperature dust is 350-600 ℃;

the buried scraper conveyor further comprises:

the feeding hole is arranged at the top of the buried scraper conveyor shell and used for receiving high-temperature dust from the high-temperature electrostatic dust collector, wherein the temperature of the high-temperature dust is 350-600 ℃;

the embedded scraper conveyer comprises a first shaft, a second shaft and a third shaft, wherein the first end of the first shaft, which is positioned outside the embedded scraper conveyer, is provided with a first gear, and the middle section of the first shaft, which is positioned inside the embedded scraper conveyer, is provided with two second gears;

the two second chains are respectively arranged on the second gears and are connected with the two third gears positioned on the other side of the embedded scraper conveyer;

the scraper plates are arranged on the two chains and used for scraping and conveying the high-temperature dust arranged on the bottom plate of the embedded scraper conveyor to a feed opening under the driving of the chains;

the buried scraper conveyor shell comprises an inner shell and an outer shell, and a heat-insulating material is arranged between the inner shell and the outer shell.

Preferably, the buried scraper conveyor housing comprises a plurality of segments;

the head end shell is used for arranging the first shaft, the tail end shell is used for arranging a third gear and a second shaft, and the middle section shell is used for arranging a feed inlet and a feed outlet;

or the head end shell is used for arranging the first shaft and the feed inlet, and the tail end shell is used for arranging the third gear, the second shaft and the feed outlet;

or the head end shell is used for arranging the first shaft and the feed opening, and the tail end shell is used for arranging the third gear, the second shaft and the feed opening;

wherein, set up the expansion gap between head end casing and the tail end casing, set up the expansion gap between head end casing and the interlude casing, the interlude casing with set up the expansion gap between the interlude casing, set up the expansion gap between interlude casing and the tail end casing.

Preferably, the upper surface of the inner shell is positioned right above the two chains, and a ceramic fiber layer and the outer shell are arranged on the upper surface of the inner shell;

the lower surface of the inner shell is in contact with the lower surface of the bottom plate of the embedded scraper conveyor, and a wear-resistant castable and the outer shell are arranged below and on two sides of the inner shell;

the both sides of inlayer casing all set up ceramic fiber layer with outer casing, wherein, ceramic fiber layer's thickness is 300mm, the thickness of wear-resisting castable is 300 mm.

Preferably, the first shaft is disposed through the buried scraper conveyor housing with its second end located outside the buried scraper conveyor;

the first end of the first shaft is arranged on the buried scraper conveyor shell through a bearing; the second end of the first shaft is arranged on the buried scraper conveyor shell through a bearing;

and a filler is arranged between the bearing and the buried scraper conveyor shell.

Preferably, a protective cover is arranged outside the bearing and the buried scraper conveyor shell;

and nitrogen is filled between the protective cover and the buried scraper conveyor shell for sealing.

The embodiment of the invention provides a built-in ash bucket ash-cleaning coking-removing heat-insulating conveying device, which comprises: the two groups of ash collecting guide plates are arranged at the bottom in the high-temperature electrostatic dust collector and are used for collecting high-temperature dust from the high-temperature electrostatic dust collector; the ash removal system is arranged on the ash collection guide plate and is used for removing high-temperature dust on the ash collection guide plate; the embedded scraper conveyer is arranged below the high-temperature electrostatic dust collector and is used for conveying the high-temperature dust to a feed opening; the embedded scraper conveyor comprises an embedded scraper conveyor shell which is of a double-layer structure, and a heat insulation material is arranged between the double-layer structure. The ash collecting guide plate is arranged in the high-temperature electrostatic dust collector, so that the problem that a moving gear included in an ash scraping system is blocked due to high temperature is solved; the ash collecting guide plate is arranged in the high-temperature electrostatic dust collector, has simple structure, can freely stretch at high temperature, and avoids the problem that the dust collector cannot normally work due to high-temperature expansion; moreover, the ash removal system arranged on the ash collection guide plate can accelerate the recovery of high-temperature dust accumulated on the ash collection guide plate and avoid the high-temperature dust accumulated on the ash collection guide plate; further, the casing of the high-temperature electrostatic dust collector of the embedded scraper conveyor arranged below the high-temperature electrostatic dust collector is of a double-layer structure, and a heat insulation material is arranged between the double-layer structure, so that the problem that the temperature is easy to run off when the existing high-temperature dust is conveyed is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a heat-preservation conveying device for removing accumulated ash and coking with an internal ash bucket according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of an ash collecting baffle according to an embodiment of the present invention;

FIG. 3 is a schematic view of an installation of a power manifold according to an embodiment of the present invention;

FIG. 4 is a schematic view of a buried scraper conveyor according to an embodiment of the present invention;

FIG. 5 is a schematic view of a portion of an embodiment of an embedded screed conveyor according to the present disclosure;

FIG. 6 is a schematic cross-sectional view of an embedded screed conveyor according to an embodiment of the present invention;

wherein, the ash collecting guide plate 1, the embedded scraper conveyer 2, the high-temperature electrostatic dust collector shell 3, the ash cleaning system 4, the angle steel support 1-2, the first shaft 2-1, the first gear 2-2, the motor 2-3, the second gear 2-4, the embedded scraper conveyer shell 2-5, the protective cover 2-6, the scraper 2-7, the inner shell 2-8, the outer shell 2-9, the ceramic fiber layer 2-10, the wear-resistant casting material 2-11, the guide rail 2-12, the limiting device 2-13, the feeding port 2-14, the feeding port 2-15, the second insulating layer 3-1, the first insulating layer 3-2, the power gas inlet 4-1, the power gas main pipe 4-2, the ash cleaning device 4-3 and the electromagnetic control valve 4-4, and 4-5 of power pneumatic branch pipes.

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.

FIG. 1 is a schematic structural view of a heat-preservation conveying device for removing accumulated ash and coking with an internal ash bucket according to an embodiment of the present invention; FIG. 2 is a schematic structural view of an ash collecting baffle according to an embodiment of the present invention; FIG. 3 is a schematic view of the installation of the power gas branch pipe 4-5 according to the embodiment of the present invention; FIG. 4 is a schematic view of a buried scraper conveyor according to an embodiment of the present invention; FIG. 5 is a schematic view of a portion of an embodiment of an embedded screed conveyor according to the present disclosure; FIG. 6 is a schematic cross-sectional view of an embedded screed conveyor according to an embodiment of the present invention; the following describes in detail a thermal insulation conveying device for removing accumulated ash from an ash bucket, which is provided by an embodiment of the present invention, with reference to fig. 1 to 6.

As shown in figure 1, the built-in ash bucket ash-cleaning coking-removing heat-preservation conveying device mainly comprises an ash-collecting guide plate 1, an ash-cleaning system and an embedded scraper conveyor 2. Specifically, two sets of ash collecting guide plates 1 are arranged at the bottom in the high-temperature electrostatic dust collector and used for collecting high-temperature dust from the high-temperature electrostatic dust collector, an ash discharging port is formed in one end, close to the bottom in the high-temperature electrostatic dust collector, of each ash collecting guide plate 1, and an embedded scraper conveyor 2 is arranged below each ash discharging port. In practical application, the ash collecting guide plate 1 is simple in structure, is arranged at the bottom of the high-temperature electrostatic dust collector and can freely stretch at high temperature, and the problem that the dust collector stops working due to high-temperature expansion in the prior art is solved.

Further, the ash collecting guide plate 1 is arranged in the high-temperature electrostatic dust collector and used for collecting high-temperature dust. However, the high temperature electrostatic precipitator has a reduced ability of falling along the ash sliding plate due to factors such as temperature change of the high temperature electrostatic precipitator, property change of the high temperature dust, or gas state change, for example, the temperature in the device is 450-. Preferably, set up an deashing system 4 at least in every group collection ash guide plate 1's top, through this deashing system 4, this deashing system 4 is high temperature resistant, the gas of effect can directly let in the high temperature electrostatic precipitator, can be with higher speed pile up the recovery of the high temperature dust on collection ash guide plate 1, avoid piling up the high temperature dust on collection ash guide plate 1, when tar in the pyrolysis gas becomes liquid because of the temperature variation, mix the deposition coking on collection ash guide plate 1 with the high temperature dust, rely on gravity alone to be difficult to satisfy the problem that the high temperature dust was collected.

In the embodiment of the invention, high-temperature dust in the dust collecting guide plate 1 enters the buried scraper conveyor 2 through the dust discharging port. In order to avoid the problem of temperature loss after high-temperature dust enters the buried scraper conveyor 2, the buried scraper conveyor 2 provided by the embodiment of the invention comprises a buried scraper conveyor shell 2-5 which is of a double-layer structure, and a heat insulation material is arranged between the double-layer structures, so that the heat insulation of the high-temperature dust entering through the feeding port 2-15 can be realized through the heat insulation material arranged between the double-layer structures, and the temperature loss is avoided in the transportation process.

It should be noted that the ash collecting guide plate 1 provided in the embodiment of the present invention is disposed at the bottom of the high temperature electrostatic precipitator, and a closed cavity is formed between the ash collecting guide plate 1 and the high temperature electrostatic precipitator casing 3. The high-temperature electrostatic dust collector is internally provided with flammable and explosive gas, and the gas in the high-temperature electrostatic dust collector needs to be replaced before and after operation, so the ash collecting guide plate 1 cannot be made into a sealing structure.

Illustratively, as shown in fig. 2, in the embodiment of the present invention, each group of ash collecting baffles 1 at least includes a head end ash chute plate and a tail end ash chute plate. Specifically, the lower part of the head end dust slipping plate and the upper part of the tail end dust slipping plate are both connected with the high-temperature electrostatic dust collector shell 3, and the upper part of the head end dust slipping plate is in contact with the lower part of the tail end dust slipping plate. It should be noted that the lower portion of the first end dust slipping plate is connected to the high temperature electrostatic precipitator casing 3, and the upper portion of the last end dust slipping plate is connected to the high temperature electrostatic precipitator casing 3, where the connection may be a welding connection or a fixed connection. The upper part of the first end dust slipping plate is in contact with the lower part of the tail end dust slipping plate, the end surface of the upper part of the tail end dust slipping plate is in contact with the end surface of the lower part of the tail end dust slipping plate, the lower part of the tail end dust slipping plate is overlapped above the upper part of the first end dust slipping plate, or the lower part of the tail end dust slipping plate is erected above the upper part of the head end dust slipping plate through a support rod.

Illustratively, as shown in fig. 1, in the embodiment of the present invention, each group of ash collecting baffles 1 at least includes a head end ash chute plate and a tail end ash chute plate. Specifically, the lower part of the head end dust slipping plate and the upper part of the tail end dust slipping plate are both connected with the high-temperature electrostatic dust collector shell 3, and the upper part of the head end dust slipping plate is in contact with the lower part of the tail end dust slipping plate. It should be noted that the lower portion of the first end dust slipping plate is connected to the high temperature electrostatic precipitator casing 3, and the upper portion of the last end dust slipping plate is connected to the high temperature electrostatic precipitator casing 3, where the connection may be a welding connection or a fixed connection. The upper part of the first end dust slipping plate is in contact with the lower part of the tail end dust slipping plate, the end surface of the upper part of the tail end dust slipping plate is in contact with the end surface of the lower part of the tail end dust slipping plate, the lower part of the tail end dust slipping plate is overlapped above the upper part of the first end dust slipping plate, or the lower part of the tail end dust slipping plate is erected above the upper part of the head end dust slipping plate through a support rod.

In practical application, the inclination angle between the first-end ash chute plate and the horizontal plane can be 20-70 degrees; correspondingly, the inclination angle between the end dust chute plate and the horizontal plane can also be 20-70 degrees. Because the ash collecting guide plate 1 is arranged at the bottom in the high-temperature electrostatic dust collector, in practical application, the distance between the lower part of the head end ash slipping plate and the outlet of the high-temperature electrostatic dust collector is smaller than the distance between the upper part of the tail end ash slipping plate and the outlet of the high-temperature electrostatic dust collector, in order to realize the function of the ash collecting guide plate 1, namely collecting high-temperature dust from the high-temperature electrostatic dust collector, preferably, the inclination angle between the tail end ash slipping plate and the horizontal plane is larger than or equal to the inclination angle between the head end ash slipping plate and the horizontal plane.

Specifically, when the inclination angle between the first end ash chute plate and the horizontal plane is 20 °, the inclination angle between the tail end ash chute plate and the horizontal plane is at least 20 °, for example, the inclination angle between the tail end ash chute plate and the horizontal plane may be 20 °, 25 °, 30 °, 35 °, 40 °, in this embodiment, when the inclination angle between the first end ash chute plate and the horizontal plane is 20 °, the inclination angle between the tail end ash chute plate and the horizontal plane is ensured to be greater than or equal to the inclination angle between the first end ash chute plate and the horizontal plane, and the inclination angle between the tail end ash chute plate and the horizontal plane may be 20 ° to 70 °, and meanwhile, the inclination angles between the tail end ash chute plate and the horizontal plane may also be 20 ° to 70 °, respectively.

Illustratively, when the inclination angle between the first end ash chute plate and the horizontal plane is 25 °, the inclination angle between the tail end ash chute plate and the horizontal plane is at least 25 °, for example, the inclination angle between the tail end ash chute plate and the horizontal plane may be 25 °, 30 °, 35 °, 40 °, 45 °, in this embodiment, when the inclination angle between the first end ash chute plate and the horizontal plane is 25 °, the inclination angle between the tail end ash chute plate and the horizontal plane is ensured to be greater than or equal to the inclination angle between the first end ash chute plate and the horizontal plane, and the inclination angle between the tail end ash chute plate and the horizontal plane may be 25 ° to 70 °, and the inclination angles between the tail end ash chute plate and the horizontal plane may be 25 ° to 70 °, respectively.

Illustratively, when the inclination angle between the first end ash chute plate and the horizontal plane is 30 °, the inclination angle between the tail end ash chute plate and the horizontal plane is at least 30 °, for example, the inclination angle between the tail end ash chute plate and the horizontal plane may be 30 °, 35 °, 40 °, 45 °, 50 °, in this embodiment, when the inclination angle between the first end ash chute plate and the horizontal plane is 30 °, the inclination angle between the tail end ash chute plate and the horizontal plane is ensured to be greater than or equal to the inclination angle between the first end ash chute plate and the horizontal plane, and the inclination angle between the tail end ash chute plate and the horizontal plane may be between 30 ° and 70 °, and meanwhile, the inclination angles between the tail end ash chute plate and the horizontal plane may also be 30 ° and 70 °, respectively.

Illustratively, when the inclination angle between the first end ash chute plate and the horizontal plane is 35 °, the inclination angle between the tail end ash chute plate and the horizontal plane is at least 35 °, for example, the inclination angle between the tail end ash chute plate and the horizontal plane may be 35 °, 40 °, 45 °, 50 °, 55 °, in this embodiment, when the inclination angle between the first end ash chute plate and the horizontal plane is 35 °, it is only necessary to ensure that the inclination angle between the tail end ash chute plate and the horizontal plane is greater than or equal to the inclination angle between the first end ash chute plate and the horizontal plane, and the inclination angle between the tail end ash chute plate and the horizontal plane may be 35 ° to 70 °, and meanwhile, the inclination angles between the tail end ash chute plate and the horizontal plane may also be 35 ° to 70 °, respectively.

Illustratively, when the inclination angle between the first end ash chute plate and the horizontal plane is 40 °, the inclination angle between the tail end ash chute plate and the horizontal plane is at least 40 °, for example, the inclination angle between the tail end ash chute plate and the horizontal plane may be 40 °, 45 °, 55 °, 60 °, 65 °, in this embodiment, when the inclination angle between the first end ash chute plate and the horizontal plane is 40 °, it is only necessary to ensure that the inclination angle between the tail end ash chute plate and the horizontal plane is greater than or equal to the inclination angle between the first end ash chute plate and the horizontal plane, and the inclination angle between the tail end ash chute plate and the horizontal plane may be 40 ° to 70 °, and the inclination angles between the tail end ash chute plate and the horizontal plane may also be 40 ° to 70 °, respectively.

Illustratively, when the inclination angle between the first end ash chute plate and the horizontal plane is 45 °, the inclination angle between the tail end ash chute plate and the horizontal plane is at least 45 °, for example, the inclination angle between the tail end ash chute plate and the horizontal plane may be 45 °, 50 °, 55 °, 60 °, 65 °, in this embodiment, when the inclination angle between the first end ash chute plate and the horizontal plane is 45 °, it is only necessary to ensure that the inclination angle between the tail end ash chute plate and the horizontal plane is greater than or equal to the inclination angle between the first end ash chute plate and the horizontal plane, and the inclination angle between the tail end ash chute plate and the horizontal plane may be 45 ° to 70 °, and the inclination angles between the tail end ash chute plate and the horizontal plane may also be 45 ° to 70 °, respectively.

Illustratively, when the inclination angle between the first end ash chute plate and the horizontal plane is 50 °, the inclination angle between the tail end ash chute plate and the horizontal plane is at least 50 °, for example, the inclination angle between the tail end ash chute plate and the horizontal plane may be 50 °, 55 °, 60 °, 65 °, 70 °, in this embodiment, when the inclination angle between the first end ash chute plate and the horizontal plane is 50 °, the inclination angle between the tail end ash chute plate and the horizontal plane is ensured to be greater than or equal to the inclination angle between the first end ash chute plate and the horizontal plane, and the inclination angle between the tail end ash chute plate and the horizontal plane may be 50 ° to 70 °, respectively.

Illustratively, when the inclination angle between the first end ash chute plate and the horizontal plane is 55 °, the inclination angle between the tail end ash chute plate and the horizontal plane is at least 55 °, for example, the inclination angle between the tail end ash chute plate and the horizontal plane may be 55 °, 60 °, 65 °, 70 °, in this embodiment, when the inclination angle between the first end ash chute plate and the horizontal plane is 55 °, it is only necessary to ensure that the inclination angle between the tail end ash chute plate and the horizontal plane is greater than or equal to the inclination angle between the first end ash chute plate and the horizontal plane, and the inclination angle between the tail end ash chute plate and the horizontal plane may be between 55 ° and 70 °, and meanwhile, the inclination angle between the tail end ash chute plate and the horizontal plane may also be 55 ° and 70 °, respectively.

Illustratively, when the inclination angle between the first end ash chute plate and the horizontal plane is 60 °, the inclination angle between the tail end ash chute plate and the horizontal plane is at least 60 °, for example, the inclination angle between the tail end ash chute plate and the horizontal plane may be 60 °, 62 °, 65 °, 68 °, 70 °, or 40 °, in this embodiment, when the inclination angle between the first end ash chute plate and the horizontal plane is 40 °, it is only necessary to ensure that the inclination angle between the tail end ash chute plate and the horizontal plane is greater than or equal to the inclination angle between the first end ash chute plate and the horizontal plane, and the inclination angle between the tail end ash chute plate and the horizontal plane may be 60 ° to 70 °, and meanwhile, the inclination angles between the tail end ash chute plate and the horizontal plane may also be 60 ° to 70 °, respectively.

In the above embodiment, when the ash collecting deflector 1 is composed of the head end ash slipping plate and the tail end ash slipping plate, the upper part of the head end ash slipping plate is contacted with the lower part of the tail end ash slipping plate, the contacted head end ash slipping plate and the tail end ash slipping plate are not welded, the ash collecting deflector 1 composed of the head end ash slipping plate and the tail end ash slipping plate can freely stretch and retract at high temperature, and the problem of high-temperature expansion is solved; moreover, because the working condition of high-temperature coal gas is easy to explode, the lapping function between the ash collecting guide plates 1 is to release local impact force in explosion, so that destructive impact on an ash sliding surface is avoided.

Further, the ash collecting guide plate 1 further comprises at least 1 middle ash sliding plate, and two ends of the middle ash sliding plate are respectively contacted with the head end ash sliding plate and the tail end ash sliding plate.

Specifically, one way is: as shown in fig. 1, the lower part of the first end dust slipping plate is connected to the high temperature electrostatic precipitator casing 3, the upper part of the first end dust slipping plate is in contact with the lower part of the middle dust slipping plate, the upper part of the middle dust slipping plate is in contact with the lower part of the tail dust slipping plate, and the upper part of the tail dust slipping plate is connected to the high temperature electrostatic precipitator casing 3.

In another mode, the dust collector also comprises a belt angle iron support 1-2, as shown in fig. 2, the lower part of the head end dust sliding plate is connected with a high-temperature electrostatic dust collector shell 3, the upper part of the head end dust sliding plate is arranged on the side angle iron of the belt angle iron support 1-2, namely, the head end dust sliding plate is arranged on the side wall in the high-temperature electrostatic dust collector through the belt angle iron support 1-2 and is contacted with the high-temperature electrostatic dust collector shell 3; the upper part of the tail end ash slipping plate is connected with a high-temperature electrostatic dust collector shell 3, and the lower part of the tail end ash slipping plate is arranged on an angle steel support 1-2, namely the tail end ash slipping plate is arranged on the side wall in the high-temperature electrostatic dust collector through the angle steel support 1-2 and is in contact with the high-temperature electrostatic dust collector shell 3; the upper part of the middle ash sliding plate is arranged on the side angle steel of the belt angle steel support 1-2 and is welded with the side angle steel, and the lower part of the middle ash sliding plate is arranged on the belt angle steel support 1-2.

In the above embodiment, when the ash collecting deflector 1 is composed of the head end ash slipping plate, the tail end ash slipping plate and at least one middle ash slipping plate, since the upper part of the middle ash slipping plate is arranged on the side angle steel of the belt angle steel support 1-2 and the lower part of the tail end ash slipping plate is arranged on the belt angle steel support 1-2, a gap is left between the upper part of the middle ash slipping plate and the lower part of the tail end ash slipping plate; the upper part of the head end ash slipping plate is arranged on the side angle steel of the belt angle steel support 1-2, and the lower part of the middle ash slipping plate is arranged on the belt angle steel support 1-2, so that a gap is reserved between the upper part of the head end ash slipping plate and the lower part of the middle ash slipping plate, and on the basis, the ash collecting guide plate 1 consisting of the head end ash slipping plate, the tail end ash slipping plate and at least one middle ash slipping plate can freely stretch at high temperature, so that the problem of high-temperature expansion is solved; moreover, because the high-temperature coal gas working condition is easy to explode, the ash collecting guide plates 1 are lapped to release local impact force in the explosion, so that destructive impact on an ash sliding surface is avoided.

Illustratively, the ash collecting guide plate 1 is arranged at the bottom of the high-temperature electrostatic dust collector, and because of the working condition requirement of the high-temperature electrostatic dust collector, in order to avoid heat loss, preferably, a first heat preservation layer 3-2 is arranged on the high-temperature electrostatic dust collector shell 3; further, in order to avoid that high-temperature dust in the high-temperature electrostatic dust collector falls into a cavity between the high-temperature electrostatic dust collector and the shell 3 of the high-temperature electrostatic dust collector through a gap of the dust sliding plate and long-time dust deposition is difficult to remove, preferably, a second heat insulation layer 3-1 is further arranged between the shell 3 of the high-temperature electrostatic dust collector and the dust collecting guide plate 1, and the second heat insulation layer 3-1 is made of a light heat insulation material.

Because the ash collecting guide plate 1 is arranged inside the high-temperature electrostatic dust collector shell 3, in practical application, the ash collecting guide plate 1 consisting of the head end ash slipping plate and the tail end ash slipping plate has different inclination angles with the horizontal plane respectively, so that the ash collecting guide plate 1 consisting of the head end ash slipping plate and the tail end ash slipping plate and the cavity formed by the high-temperature electrostatic dust collector shell 3 can have different sizes. For example, if the formed cavity is large, the less space is available in the high temperature electrostatic precipitator; accordingly, if the cavity formed is small, the more space is available within the high temperature electrostatic precipitator. In order to enable high-temperature dust on the dust collecting guide plate 1 to smoothly fall, the setting angle of the dust collecting guide plate 1 is increased as much as possible under a general condition, but the built-in dust collecting guide plate 1 occupies the space in the high-temperature electrostatic dust collector as little as possible, and the angle between the dust sliding plate and the horizontal plane is as small as possible on the basis that the use requirement is met and the falling dust is smooth.

Illustratively, as shown in FIG. 1, the ash removal system 4 comprises a motive gas inlet 4-1, an electromagnetic control valve 4-4, a main motive gas conduit 4-2 and an ash removal device 4-3. Specifically, a power gas inlet 4-1 is arranged outside the high-temperature electrostatic dust collector and connected with a power gas main pipeline 4-2, and pressure temperature and oxygen-free gas is provided in the high-temperature electrostatic dust collector; the electromagnetic control valve 4-4 is arranged on the main power gas pipeline 4-2 and is positioned between the power gas inlet 4-1 and the high-temperature electrostatic dust collector; one end of the main power gas pipeline 4-2 is positioned outside the high-temperature electrostatic dust collector, and the other end extends into the high-temperature electrostatic dust collector; the ash cleaning device 4-3 is positioned on the ash collecting guide plate 1, is connected with the main power gas pipeline 4-2 and is used for removing high-temperature dust accumulated on the ash collecting guide plate.

Specifically, the ash removing device 4-3 can be a sound wave ash blower or a gas nozzle. When the ash cleaning device 4-3 is a sound wave ash blower, the ash cleaning device can convert the pressure, temperature and oxygen-free gas into sound waves to vibrate the high-temperature dust accumulated on the ash collecting guide plate, so that the high-temperature dust accumulated on the ash collecting guide plate is removed; when the ash cleaning device 4-3 is a gas nozzle, the ash cleaning device can blow a pressure gas with temperature and without oxygen to the high-temperature dust accumulated on the ash collecting guide plate, so that the high-temperature dust accumulated on the ash collecting guide plate is removed.

In practical application, the pressurized, heated and oxygen-free gas can be heated steam or heated nitrogen. Because the inside of the high-temperature electrostatic dust collector is inflammable and explosive gas, the gas entering through the power gas inlet cannot contain oxygen. When the ash removal device is a sound wave soot blower, the pressure temperature oxygen-free gas is converted into sound waves to vibrate the high-temperature dust accumulated on the ash collection guide plate, and the pressure temperature oxygen-free gas is not converted into sound waves in the other part of the ash removal device, so that the ash removal device blows the high-temperature dust accumulated on the ash collection guide plate.

It should be noted that, because the ash removal system 4 conveys other materials into the high-temperature electrostatic precipitator through the main power gas pipeline 4-2, the main power gas pipeline 4-2 is introduced from the right above to the lower part, because the area of each group of ash collecting guide plates 1 is relatively large, but the acting range of the ash removal device 4-3 is limited, if the ash removal system 4 only comprises one ash removal device 4-3, when the ash removal system blows the high-temperature dust formed on the ash collecting guide plates 1, a blow-through area exists. In order to solve the above problem, it is preferable to further include a power pneumatic branch 4-5.

In the embodiment of the invention, one main power pneumatic pipeline 4-2 is vertically connected with a plurality of power pneumatic branch pipelines 4-5 at intervals, and each power pneumatic branch pipeline 4-5 is provided with 1 ash cleaning device 4-3. Through the arrangement, the problem that the blowing leakage area exists on the ash collecting guide plate 1 can be solved.

It should be noted that the power gas branch pipes 4-5 and the power gas main pipe 4-2 are both positioned on the ash collecting guide plate 1, and when a plurality of power gas branch pipes 4-5 are positioned on the middle ash slipping plate, the inclination angles of each power gas branch pipe 4-5 and the ash removal device 2 are consistent with the inclination angle of the middle ash slipping plate; when the power gas branch pipes 4-5 are positioned on the head end ash slipping plate, the inclination angle of each power gas branch pipe 4-5 and the ash cleaning device is consistent with that of the head end ash slipping plate.

Further, the power air branch pipes 4-5 are positioned on the ash collecting guide plate 1, and when the ash cleaning devices 4-3 connected to the power air branch pipes 4-5 are acoustic soot blowers, the linear distance between the acoustic soot blowers and the ash discharge openings of the ash collecting guide plate 1 is 5-7 meters.

Furthermore, the action range of the acoustic wave soot blower is 6-9m in the right front, and the peripheral diameter is 2-3 m; and the action range of the gas nozzles is relatively small compared with the action range of the acoustic wave soot blower. Therefore, if the ash removing devices 4-3 arranged on the power gas branch pipes 4-5 are acoustic soot blowers, as shown in fig. 3, one power gas branch pipe 4-5 is arranged on each power gas main pipe 4-2 at an interval of 2 meters, and a plurality of power gas branch pipes 4-2 can be arranged on one power gas main pipe 4-2, and each acoustic soot blower is parallel to the middle soot-blowing plate or the head-end soot-blowing plate arranged below the acoustic soot blower; if the ash cleaning device 4-3 arranged on the power gas branch pipe 4-5 is a gas nozzle, the gas nozzle is positioned at the upper part of the head end ash sliding plate. As shown in figure 3, a power pneumatic branch pipe 4-5 is arranged on each power pneumatic main pipe 4-2 at an interval of 0.2-0.4 m, a plurality of power pneumatic main pipes 4-2 can be arranged, and each gas nozzle is parallel to a middle ash sliding plate or a head end ash sliding plate arranged below the gas nozzle.

In the embodiment of the invention, the number of the sound wave soot blowers arranged on the power gas branch pipes 4-5 is related to the length of the power gas main pipe 4-2 and the pressure and the gas quantity of the temperature pressure oxygen-free gas, and the length of the power gas branch pipes 4-5 is related to the area of the ash collecting guide plate 1; the number of the gas nozzles arranged on the power gas branch pipe 4-5 is related to the length of the power gas main pipe 4-2 and the pressure and the gas quantity of the temperature pressure oxygen-free gas, and the length of the power gas branch pipe 4-5 is related to the distance between the power gas main pipe 4-2 and the upper part of the head end ash sliding plate.

In practical application, compressed gas enters a main power gas pipeline 4-2 through a power gas inlet 4-1, the main power gas pipeline 4-2 penetrates through a shell 3 of a high-temperature electrostatic dust collector, a second heat insulation layer 3-1 or the main power gas pipeline 4-2 penetrates through the shell 3 of the high-temperature electrostatic dust collector, the second heat insulation layer 3-1, a first heat insulation layer 3-2 and an ash collecting guide plate 1 and then enters the inside of the high-temperature electrostatic dust collector, an electromagnetic valve 24 controls the on-off of the gas of the main power gas pipeline 4-2 under the control of a controller, the gas in the main power gas pipeline 4-2 is finally converted into high-strength sound waves or wind power through a power gas branch pipe 4-5 and a dust cleaning device 4-3 and acts on ash on an ash collecting guide plate 1, so that the ash collecting guide plate 1 slides into an embedded scraper conveyor 2 and then is transported away, the dust remover can operate stably with high efficiency.

Illustratively, as shown in FIGS. 4-6, the embedded scraper conveyor 2 mainly comprises a feed inlet 2-14, a first shaft 2-1, a second chain, a scraper 2-7, and an embedded scraper conveyor housing 2-5.

In practice, the feed ports 2-14 are located at the top of the buried scraper conveyor housing 2-5, and when the buried scraper conveyor 2 is located below the high-temperature electrostatic precipitator, the feed ports 2-14 can be located opposite to the ash discharge port of the high-temperature electrostatic precipitator, i.e. the high-temperature dust from the high-temperature electrostatic precipitator can enter the buried scraper conveyor 2. In the embodiment of the present invention, the specific position of the feed port 2-14 provided on the top of the buried scraper conveyor casing 2-5 is not limited.

Further, the embedded scraper conveyor 2 comprises a first shaft 2-1, a first gear 2-2 is arranged at a first end outside the embedded scraper conveyor 2, and two second gears 2-4 are arranged at a middle section inside the embedded scraper conveyor 2. Specifically, a belt or a first chain is arranged on the first gear 2-2, the belt or the first chain is connected with a motor 2-3 for providing power, when the first gear 2-2 rotates, the first shaft 2-1 can be driven to rotate, and the first shaft 2-1 can drive two second gears 2-4 arranged on the first shaft 2-1 to rotate.

Further, a second chain is provided on each of the two second gears 2-4, and in the embodiment of the present invention, a first end of the second chain is provided on the second gear 2-4, and correspondingly, a third gear is provided on the other end of the embedded scraper conveyor 2, and the second chain is provided on both the second gear 2-4 and the third gear, so as to rotate around the second gear 2-4 and the third gear under the condition that the second gear 2-4 rotates.

It should be noted that the number of the third gears arranged at the other end of the embedded scraper conveyor 2 is also two, and the two third gears correspond to the second gears 2-4, respectively, and since the second gears 2-4 are driven by the first shaft 2-1 to rotate, the second chain can be driven to rotate, the third gear arranged at the other end of the embedded scraper conveyor 2 can be a driven wheel, that is, the two third gears do not need to be additionally provided with the external motor 2-3.

In the embodiment of the invention, in order to avoid the accumulation of high-temperature dust from the ash discharge port of the high-temperature electrostatic precipitator on the bottom plate of the buried scraper conveyor or the deposition of the high-temperature dust on the bottom plate of the buried scraper conveyor due to temperature, preferably, a scraper 2-7 is further arranged between the two second chains, when the two second chains are driven by the first shaft 2-1 to rotate around the second gear 2-4 and the third gear, the scraper 2-7 can be driven to rotate, and when the scraper 2-7 rotates above the bottom plate of the buried scraper conveyor, the high-temperature dust falling on the bottom plate of the buried scraper conveyor can be driven to move to the feed port 2-15, so that the high-temperature dust from the high-temperature electrostatic precipitator can be transported to the feed port 2-15 from the ash discharge port.

According to the embedded scraper conveyor 2 for heat preservation and conveying of high-temperature materials, the shell is of a double-layer structure, and the heat preservation material is arranged between the double-layer structure, so that the problem that the temperature is easy to lose when the existing high-temperature dust is conveyed is solved; moreover, the two second chains are arranged on the first shaft 2-1, the specifications of the chains are increased, and the problem of expansion of equipment when the temperature inside the embedded scraper conveyor 2 is high is solved due to the fact that the shell is subjected to internal heat insulation; furthermore, the scrapers 2-7 are arranged on the second chain, so that high-temperature dust deposited on the bottom plate of the embedded scraper conveyor can be scraped to the feed openings 2-15, and the problem that the high-temperature dust is deposited on the bottom plate of the embedded scraper conveyor due to temperature change can be solved.

For example, the buried scraper conveyor 2 for conveying high-temperature materials in a heat preservation mode comprises buried scraper conveyor shells 2-5, and for convenience of transportation and adaptation to different application scenarios, the buried scraper conveyor shells 2-5 preferably comprise multiple segments, but in practical application, a head end shell and a tail end shell are necessary, and the number of the middle segment shells can be adjusted according to practical situations. For example, a buried scraper conveyor shell 2-5 comprising only a head end shell and a tail end shell; a buried scraper conveyor housing 2-5 comprising a head end housing, a tail end housing and a middle section housing; a buried scraper conveyor housing 2-5 includes a head end housing, a tail end housing, and a plurality of mid-section housings.

In practical application, a buried scraper conveyor shell 2-5 is provided, wherein a head end shell is used for arranging a first shaft 2-1, a tail end shell is used for arranging a third gear and a second shaft, and a middle section shell is used for arranging a feed inlet 2-14 and a feed outlet 2-15; a buried scraper conveyor shell 2-5 is characterized in that a head end shell is used for arranging a first shaft 2-1 and a feed inlet 2-14, and a tail end shell is used for arranging a third gear, a second shaft and a feed outlet 2-15; a buried scraper conveyor shell 2-5 is provided, wherein a first shaft 2-1 and a feed opening 2-15 are arranged at a head end shell, and a third gear, a second shaft and a feed opening 2-14 are arranged at a tail end shell.

For example, the feed ports 2-14 may be disposed at the top of the head end shell, at the top of the middle shell, or at the top of the tail end shell; the feed openings 2-15 can be arranged at the bottom of the tail end shell, the bottom of the middle section shell and the bottom of the head end shell.

Specifically, when the buried scraper conveyor shell 2-5 comprises a head end shell, a plurality of middle section shells and a tail end shell, in one mode, a feed port 2-14 is arranged at the top of the head end shell, the feed port 2-14 can also be arranged at the top of the middle section shell close to the head end shell, and correspondingly, feed ports 2-15 are arranged at the bottoms of the middle section shell close to the tail end shell and the tail end shell; in one mode, when the feed openings 2-15 are arranged at the bottom of the head end shell, the feed openings 2-15 can also be arranged at the bottom of the middle section shell close to the head end shell, and correspondingly, the feed openings 2-14 are arranged at the top of the middle section shell and the tail end shell close to the tail end shell.

In the embedded scraper conveyor 2 for heat preservation and conveying of high-temperature materials, the collected high-temperature dust is high-temperature dust, the temperature of the collected high-temperature dust is 450-600 ℃, and in order to avoid the problem that the shell is damaged due to expansion caused by high temperature when the high-temperature dust is conveyed, preferably, if the embedded scraper conveyor shell 2-5 comprises multiple sections, an expansion gap is arranged in a contact area of each section.

Specifically, set up the expansion gap between head end casing and the tail end casing, set up the expansion gap between head end casing and the interlude casing, set up the expansion gap between interlude casing and the tail end casing.

For example, the number of the scrapers 2-7 arranged on the second chain may include a plurality of scrapers 2-7, and the plurality of scrapers 2-7 may sequentially scrape and convey the high-temperature dust on the bottom plate of the embedded scraper conveyor, and in practical applications, a gap is provided between the lower surfaces of the scrapers 2-7 and the bottom plate of the embedded scraper conveyor.

In practical application, the preparation materials of the chain, the guide rail 2-12 and the scraper 2-7 are heat-resistant alloy steel, such as chromium molybdenum steel of 15CrMo, 35CrMo, 42CrMo and the like and chromium molybdenum vanadium steel of 12Cr1MoV and the like; in the embodiment of the present invention, the specific materials of the chain, the guide rails 2 to 12, and the scrapers 2 to 7 are not limited.

Illustratively, the buried scraper conveyor shell 2-5 comprises an inner shell 2-8 and an outer shell 2-9, and a thermal insulation material is arranged between the inner shell 2-8 and the outer shell 2-9. In the embodiment of the invention, the embedded scraper conveyor 2 is generally suspended at the bottom of other equipment, so that in order to avoid the excessive weight, higher requirements are also put on the matched equipment, and therefore, the heat-insulating material arranged between the inner shell 2-8 and the outer shell 2-9 is selected from the material with lighter weight as much as possible; however, because the collision of the chain and the scrapers 2-7 arranged in the embedded scraper conveyor 2 is easy to cause the damage of the inner shells 2-8 and the light heat-insulating material, the heat insulation is carried out in the form of wear-resistant casting materials 2-11 in the area of the embedded scraper conveyor bottom plate in direct contact with the high-temperature dust and the scrapers 2-7, the heat insulation thickness is 300mm, and the volume weight of the side wall and the top is 220kg/m for reducing the weight ³ The ceramic fiber module is used for heat preservation, and the heat preservation thickness is 300 mm.

Namely, the upper surface of the inner shell 2-8 is positioned right above the two chains, and the ceramic fiber layer 2-10 and the outer shell 2-9 are arranged on the upper surface; the lower surface of the inner shell 2-8 is contacted with the lower surface of the bottom plate of the embedded scraper conveyer, and the lower part and two sides of the inner shell are provided with wear-resistant castable 2-11 and the outer shell 2-9; the two sides of the inner shell 2-8 are both provided with a ceramic fiber layer 2-10 and an outer shell 2-9.

It should be noted that, in the embodiment of the present invention, when the buried scraper conveyor casing 2-5 includes the inner casing 2-8 and the outer casing 2-9, if the buried scraper conveyor casing 2-5 also includes multiple sections, that is, when the buried scraper conveyor casing 2-5 includes a head casing, a middle casing and a tail casing, or includes a head casing and a tail casing, each section of the casing also includes the inner casing 2-8 and the outer casing 2-9.

For example, when the buried scraper conveyor casing 2-5 comprises a head end casing, a middle section casing and a tail end casing, the head end casing comprises an inner casing 2-8 and an outer casing 2-9, the middle section casing comprises an inner casing 2-8 and an outer casing 2-9, and the tail end casing also comprises an inner casing 2-8 and an outer casing 2-9. Specifically, the shapes of the inner shell 2-8 and the outer shell 2-9 of the head end shell are consistent with the shape of the head end shell, the shapes of the inner shell 2-8 and the outer shell 2-9 of the middle shell are consistent with the shape of the middle shell, and the shapes of the inner shell 2-8 and the outer shell 2-9 of the tail end shell are consistent with the shape of the tail end shell. In the embodiment of the invention, the specific shapes of the inner shell 2-8 and the outer shell 2-9 included in the head end shell, the middle section shell and the tail end shell are not limited as long as the heat insulation materials arranged between the outer shell 2-9 and the inner shell 2-8 are consistent and have the same functions.

Illustratively, the first shaft 2-1 has a first end disposed outside the buried scraper conveyor housing 2-5 and a second end also disposed outside the buried scraper conveyor housing 2-5, i.e., the first shaft 2-1 is disposed through the buried scraper conveyor housing 2-5. In practical application, a bearing is arranged on the buried scraper conveyor shell 2-5 through a hole, and the first shaft 2-1 penetrates through the bearing and is arranged on the buried scraper conveyor shell 2-5. In order to improve the sealing between the first shaft 2-1 and the buried scraper conveyor housing 2-5, it is preferable that sealing fillers are filled between the first shaft 2-1 and the bearings, and between the bearings and the buried scraper conveyor housing 2-5. In order to avoid air leakage between the first shaft 2-1 and the bearings, it is preferred that a protective cover 2-6 is provided outside the bearings and the buried scraper conveyor housing 2-5, i.e. a protective cover 2-6 is provided between the first end of the first shaft 2-1 and the buried scraper conveyor housing 2-5, and a protective cover 2-6 is provided between the second end of the first shaft 2-1 and the buried scraper conveyor housing 2-5; and the space between the protecting cover 2-6 and the buried scraper conveyor casing 2-5 is sealed by filling nitrogen gas.

Because the first shaft 2-1 is at least arranged in the head end shell, and the second shaft is at least arranged in the tail end shell, in practical application, because the temperature of high-temperature dust is higher, the first shaft 2-1 and the second shaft can respectively transfer heat to the head end shell and the tail end shell under the action of high temperature, the head end shell and the tail end shell can generate local high temperature, the strength of the head end shell and the tail end shell is reduced, and then the first shaft 2-1 and the second shaft can be inclined, so that the buried scraper conveyor 2 for heat preservation and conveying of high-temperature materials fails to work. In the embodiment of the invention, when nitrogen is filled between the protective cover 2-6 and the buried scraper conveyor shell 2-5, the nitrogen can not only seal between the protective cover 2-6 and the buried scraper conveyor shell 2-5, but also cool the high temperature generated when the first shaft 2-1 rotates, namely cool the high temperature from the first shaft 2-1, thereby avoiding the problem that the buried scraper conveyor shell 2-5 is softened due to the high temperature.

Illustratively, the buried scraper conveyor 2 further comprises a motor 2-3, a guide rail 2-12 and a guide rail 2-12 limiting device 2-13. Specifically, the motor 2-3 and the first shaft 2-1 are arranged outside the embedded scraper conveyor 2 side by side and connected with the first gear 2-2 through a first chain;

two guide rails 2-12 are respectively arranged at the bottom and the middle part in the embedded scraper conveyor 2 side by side, the guide rails 2-12 are respectively arranged under two second chains, and the two second chains are respectively clamped on the guide rails 2-12; a limiting device 2-13 is arranged above each guide rail 2-12, and the limiting devices 2-13 are used for limiting the height of the second chain.

The embodiment of the invention provides a built-in ash bucket ash-cleaning coking-removing heat-insulating conveying device, which comprises: the two groups of ash collecting guide plates are arranged at the bottom in the high-temperature electrostatic dust collector and are used for collecting high-temperature dust from the high-temperature electrostatic dust collector; the ash removal system is arranged on the ash collection guide plate and is used for removing high-temperature dust on the ash collection guide plate; the embedded scraper conveyer is arranged below the high-temperature electrostatic dust collector and is used for conveying the high-temperature dust to a feed opening; the embedded scraper conveyor comprises an embedded scraper conveyor shell which is of a double-layer structure, and a heat insulation material is arranged between the double-layer structure. The ash collecting guide plate is arranged in the high-temperature electrostatic dust collector, so that the problem that a moving gear included in an ash scraping system is blocked due to high temperature is solved; the ash collecting guide plate is arranged in the high-temperature electrostatic dust collector, has a simple structure, can freely stretch at high temperature, and avoids the problem that the dust collector cannot normally work due to high-temperature expansion; moreover, the ash removal system arranged on the ash collection guide plate can accelerate the recovery of high-temperature dust accumulated on the ash collection guide plate and avoid the high-temperature dust accumulated on the ash collection guide plate; further, the casing of the high-temperature electrostatic dust collector of the embedded scraper conveyor arranged below the high-temperature electrostatic dust collector is of a double-layer structure, and a heat insulation material is arranged between the double-layer structure, so that the problem that the temperature is easy to run off when the existing high-temperature dust is conveyed is solved.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (11)

1. The utility model provides a built-in ash bucket clearance ash removes coking heat preservation conveyor which characterized in that includes:

the two groups of ash collecting guide plates are arranged at the bottom in the high-temperature electrostatic dust collector and are used for collecting high-temperature dust from the high-temperature electrostatic dust collector;

the ash removal system is arranged on the ash collection guide plate and is used for removing high-temperature dust on the ash collection guide plate;

the embedded scraper conveyer is arranged below the high-temperature electrostatic dust collector and is used for conveying the high-temperature dust to a feed opening; the embedded scraper conveyor comprises an embedded scraper conveyor shell which is of a double-layer structure, and a heat insulation material is arranged between the double-layer structure.

2. The internal ash bucket ash-cleaning coking-removal heat-preservation conveying device as claimed in claim 1, wherein the ash-collecting deflector at least comprises a head end ash-slipping plate and a tail end ash-slipping plate, the lower part of the head end ash-slipping plate and the upper part of the tail end ash-slipping plate are both connected with the shell, and the upper part of the head end ash-slipping plate is in contact with the lower part of the tail end ash-slipping plate;

the front end ash slipping plate and the tail end ash slipping plate form an inclined angle of 20-70 degrees with the horizontal plane.

3. The built-in ash bucket dust-cleaning coking-removing heat-preserving conveying device as claimed in claim 2,

the ash collecting guide plate also comprises at least 1 middle ash sliding plate, and two ends of the middle ash sliding plate are respectively contacted with the head end ash sliding plate and the tail end ash sliding plate;

the head end ash sliding plate and the horizontal plane form an inclined angle of 20 degrees, and the tail end ash sliding plate and the horizontal plane form an inclined angle of at least 20 degrees; or

The head end ash sliding plate and the horizontal plane form an inclined angle of 40 degrees, and the tail end ash sliding plate and the horizontal plane form an inclined angle of at least 40 degrees; or

The front end ash sliding plate and the horizontal plane form an inclination angle of 70 degrees, and the tail end ash sliding plate and the horizontal plane form an inclination angle of at least 70 degrees.

4. The built-in ash bucket dust-cleaning coking-removing heat-preserving conveying device as claimed in claim 2,

a first heat-insulating layer is arranged between each group of the ash collecting guide plates and the high-temperature electrostatic dust collector shell, and a second heat-insulating layer is arranged on the high-temperature electrostatic dust collector shell;

the head end and the tail end of each group of the ash collecting guide plates are in sealing contact with the high-temperature electrostatic dust collector shell; and the two groups of ash collecting guide plates and the high-temperature electrostatic dust collector shell form a cavity.

5. The conveyor of claim 1, wherein the ash removal system comprises:

the power gas inlet is arranged outside the high-temperature electrostatic dust collector, is connected with a power gas main pipeline and provides the high-temperature electrostatic dust collector with the pressurized temperature and oxygen-free gas;

the electromagnetic control valve is arranged on the power gas main pipeline and is positioned between a power gas inlet and the high-temperature electrostatic dust collector;

one end of the main power gas pipeline is positioned outside the high-temperature electrostatic dust collector, and the other end of the main power gas pipeline extends into the high-temperature electrostatic dust collector;

and the ash cleaning device is arranged on the ash collecting guide plate, is connected with the main power gas pipeline and is used for removing high-temperature dust accumulated on the ash collecting guide plate.

6. The internal ash bucket ash-removing coking-removing heat-preserving conveying device as claimed in claim 5, further comprising a plurality of power pneumatic branch pipes;

the outlet of the main power gas pipeline is vertically connected with a plurality of power gas branch pipes, the interval between every two adjacent power gas branch pipes is 0.2-2 m, and the outlet of each power gas branch pipe is provided with an ash removal device;

when the plurality of power pneumatic branch pipes are positioned on the middle ash sliding plate, the inclination angle of each power pneumatic branch pipe and the ash cleaning device is consistent with that of the middle ash sliding plate; or when the power pneumatic branch pipes are positioned on the head end ash sliding plate, the inclination angle of each power pneumatic branch pipe and the ash cleaning device is consistent with that of the head end ash sliding plate.

7. The device for cleaning ash and removing coking and insulating the conveying with the built-in ash bucket as claimed in claim 1, wherein the buried scraper conveyor shell comprises an inner shell and an outer shell, an insulating material is arranged between the inner shell and the outer shell, the feed inlet is arranged at the top of the buried scraper conveyor shell and is used for receiving high-temperature dust from a high-temperature electrostatic dust collector, and the temperature of the high-temperature dust is 350-600 ℃;

the buried scraper conveyor further comprises:

the feeding hole is arranged at the top of the buried scraper conveyor shell and used for receiving high-temperature dust from the high-temperature electrostatic dust collector, wherein the temperature of the high-temperature dust is 350-600 ℃;

the embedded scraper conveyer comprises a first shaft, a second shaft and a third shaft, wherein the first end of the first shaft, which is positioned outside the embedded scraper conveyer, is provided with a first gear, and the middle section of the first shaft, which is positioned inside the embedded scraper conveyer, is provided with two second gears;

the two second chains are respectively arranged on the second gears and are connected with two third gears positioned on the other side of the embedded scraper conveyor;

the scraper plates are arranged on the two chains and used for scraping and conveying the high-temperature dust arranged on the bottom plate of the embedded scraper conveyor to a feed opening under the driving of the chains;

the buried scraper conveyor shell comprises an inner shell and an outer shell, and a heat-insulating material is arranged between the inner shell and the outer shell.

8. The internal ash bucket ash removal coking-removal heat-preservation conveying device as claimed in claim 7, wherein the buried scraper conveyor shell comprises a plurality of sections;

the head end shell is used for arranging the first shaft, the tail end shell is used for arranging a third gear and a second shaft, and the middle section shell is used for arranging a feed inlet and a feed outlet;

or the head end shell is used for arranging the first shaft and the feed inlet, and the tail end shell is used for arranging the third gear, the second shaft and the feed outlet;

or the head end shell is used for arranging the first shaft and the feed opening, and the tail end shell is used for arranging the third gear, the second shaft and the feed opening;

wherein, set up the expansion gap between head end casing and the tail end casing, set up the expansion gap between head end casing and the interlude casing, the interlude casing with set up the expansion gap between the interlude casing, set up the expansion gap between interlude casing and the tail end casing.

9. The internal ash bucket ash-removing coking-removing heat-insulating conveying device as claimed in claim 7, wherein the upper surface of the inner shell is positioned right above the two chains, and a ceramic fiber layer and the outer shell are arranged on the upper surface of the inner shell;

the lower surface of the inner shell is in contact with the lower surface of the bottom plate of the embedded scraper conveyor, and a wear-resistant castable and the outer shell are arranged below and on two sides of the inner shell;

the both sides of inlayer casing all set up ceramic fiber layer with outer casing, wherein, ceramic fiber layer's thickness is 300mm, the thickness of wear-resisting castable is 300 mm.

10. The internal ash bucket ash removal coking-removal heat-preservation conveying device as claimed in claim 7, wherein the first shaft is arranged through the buried scraper conveyor shell, and the second end of the first shaft is positioned outside the buried scraper conveyor;

the first end of the first shaft is arranged on the buried scraper conveyor shell through a bearing; the second end of the first shaft is arranged on the buried scraper conveyor shell through a bearing;

and a filler is arranged between the bearing and the buried scraper conveyor shell.

11. The internal ash bucket ash-removing coking-removing heat-preserving conveying device as claimed in claim 10,

a protective cover is arranged outside the bearing and the embedded scraper conveyor shell;

and nitrogen is filled between the protective cover and the buried scraper conveyor shell for sealing.

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