Slag conveying device of coal-fired boiler
By designing a coal-fired boiler slag conveying device with a multi-channel dust-proof structure in the coal-fired furnace slag conveying system, utilizing the coal-fired furnace slag conveying device with a multi-channel dust-proof structure, and using the fuel slag conveying device with a multi-channel dust-proof structure, the problem of difficult to effectively control dust in the existing technology is solved, effective dust prevention effect is achieved, the dust prevention efficiency is protected, the health of workers and the environment are protected, and environmental protection requirements are met.
Patent Information
- Application Number
- CN202422796048.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-15
AI Technical Summary
The dust generated during the slag conveying process of existing coal-fired boilers is difficult to effectively control, causing environmental pollution and health threats to operators.
A slag conveying device for coal-fired boilers with a multi-pass dust-proof structure was designed, including a rubber belt and dust collecting box at the discharge port of the slag cooler, a wet cloth strip and a sealing structure for the slag hopper. Combined with a sealed room and dust collection duct, the device uses negative pressure air from the flue to extract dust, achieving layer-by-layer isolation and sealing.
It significantly improves dust prevention efficiency, reduces dust concentration in the workplace, protects workers' health and the environment's dust concentration, meets environmental protection requirements, achieves effective dust control, and protects workers' health and environmental safety.
Smart Images
Figure CN223448370U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a coal-fired boiler slag conveying system, especially a coal-fired boiler slag conveying device with dustproof function. BACKGROUND
[0002] In the circulating fluidized bed boiler, the slag produced after the fuel burns is discharged through the slag discharge port at the bottom of the hearth, and the high-temperature slag discharged is first introduced into the slag cooler for cooling to reduce the temperature of the slag and protect the subsequent conveying equipment; the cooled slag is conveyed into the slag storage through the belt conveyor and the large-inclination hopper belt conveyor, and a large amount of dust is leaked during the slag conveying process. The existing dustproof method is to seal the slag discharge port with wool cloth to control the leakage of ash and slag, but the ash dust cannot be effectively controlled and is scattered into the air to pollute the environment and also threatens the health of the operators.
[0003] Therefore, there is an urgent need to design a coal-fired boiler slag conveying device with dustproof function. SUMMARY
[0004] The utility model discloses a kind of coal-fired boiler slag conveying devices with dustproof function, to overcome the deficiencies of prior art, control circulating fluidized bed boiler slag dust, meet environmental protection requirements, create good working environment.
[0005] The utility model discloses a kind of coal-fired boiler slag conveying devices with dustproof function, to overcome the deficiencies of prior art, control circulating fluidized bed boiler slag dust, meet environmental protection requirements, create good working environment.
[0006] The coal-fired boiler slag conveying device is characterized in that: the discharge port of the slag cooler is connected to the horizontal slag conveying belt conveyor, the discharge section of the horizontal slag conveying belt conveyor is connected to the large-inclination hopper belt conveyor through the slag falling hopper, the large-inclination hopper belt conveyor is connected to the slag storage, the slag falling hopper is installed with the slag falling port blocking belt on both sides, the slag falling hopper is sealed with steel plates, forming a sealed chamber for the slag falling port, a dust collection box is installed on the upper part of the slag falling hopper, wet cloth strips are distributed in the dust collection box, a dust collection water tank is fixed on the top of the dust collection box, the dust collection water tank is connected to the cooling water pipeline through the water inlet pipe, the water in the dust collection water tank penetrates into the wet cloth strips, the wet cloth strips capture the dust in the dust collection box to prevent dust leakage, and holes are opened on the dust collection box and the sealed chamber for the slag falling port, and the dust collection pipeline is connected to the boiler tail flue.
[0007] Further, the coal-fired boiler slag conveying device described above, wherein the discharge port of the slag cooler is installed with a rubber belt, and the periphery is sealed with a steel plate to form a dust collection box, dust collection cloth strips are installed on the dust collection box, a dust collection pipeline is connected to the dust collection box, the dust collection pipeline is connected to a dust collection main pipeline, and the dust collection main pipeline is connected to a dust collector.
[0008] Further, the coal-fired boiler slag conveying device described above, wherein a wind volume regulating valve is installed on the dust collection main pipeline.
[0009] Further, the coal-fired boiler slag conveying device, wherein a sealing room is installed along the coal-fired boiler slag conveying pit corridor and the slag channel, and the sealing room covers the slag cooler and the horizontal slag conveying belt machine.
[0010] Further, the coal-fired boiler slag conveying device, wherein the sealing room is provided with a dustproof soundproof door.
[0011] Further, the coal-fired boiler slag conveying device, wherein a belt sweeper is installed on the slag falling hopper.
[0012] The utility model has significant advantages and beneficial effects compared with prior art, and is embodied in the following aspects:
[0013] ①The utility model many dustproof structures, significantly improve dust efficiency, effectively reduce the dust concentration of workplace, protect the health of workers and environmental safety, satisfy environmental protection requirement;The dust isolation structure is designed to the discharge port of the slag cooler and the slag falling hopper of the large angle of repose hopper belt machine, and the wet cloth strip in the dust collection box on the slag falling hopper effectively captures the slag dust particles in the dust collection box, utilizes the flue negative pressure wind to suck out the dust in the dust collection box and the sealing room of the slag falling port, as a dust collection, and the slag falling port baffle belt and belt sweeper control the slag dust leakage of the slag conveying system, and the dust collection box and the slag sealing room control dust flying;
[0014] ②The rubber belt is installed to the discharge port of the slag cooler, and the dust collection box is formed to the periphery, and the dust collection cloth strip is installed to the dust collection box, the dust in the sealing room of the slag conveying system is removed by the flue negative pressure wind, as a dust collection;Through the optimization design of the dust collection pipeline and the air volume valve, more reasonable airflow organization is realized, and the dust removal effect is enhanced;The dust generated by the coal-fired boiler slag conveying system is completely isolated, and is avoided to enter the external air;
[0015] ③The slag conveying system sealing room is installed along the coal-fired boiler slag conveying system pit corridor and the slag channel, as another dustproof, and is isolated and sealed layer by layer;
[0016] ④Through the design of multiple dust isolation structures, the slag leakage of the slag falling port is greatly reduced, and the labor intensity of manual slag cleaning is reduced;Through the dust collection air volume control and the optimization design, the dust of the slag conveying system is controlled, the dustproof structure is simple, easy to install and maintain, and the reliability and service life of the conveying system equipment are improved.
[0017] Other features and advantages of the utility model will be set forth in the subsequent description, and partially become obvious from the description, or be understood by the specific embodiment of the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structure specially pointed out in the written description and the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical schemes of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0019] Figure 1 : the structural schematic diagram of the device of the present application;
[0020] Figure 2 : the schematic diagram of the slag port dustproof structure of the present application. DETAILED DESCRIPTION
[0021] The technical schemes of the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.
[0022] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. Meanwhile, in the description of the present application, orientation terms and order terms, etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0023] As Figure 1 , Figure 2As shown, the coal-fired boiler slag conveying device, the discharge port of the slag cooler 4 is connected to the horizontal slag conveying belt 2, the discharge section of the horizontal slag conveying belt 2 is connected to the large-angle hopper belt 7 through the slag falling hopper 11, the large-angle hopper belt 7 is connected to the slag bin at the conveying outlet end, the slag falling hopper 11 is provided with a slag falling port blocking belt 19 on both sides, the slag falling hopper 11 is sealed by a steel plate to form a slag falling port sealing chamber 10, the slag falling hopper 11 is provided with a belt cleaning device 12, the dust collection box 5 is installed on the upper part of the slag falling hopper 11, the dust collection box 5 is provided with wet cloth strips 15, the dust collection water tank 16 is fixed on the top of the dust collection box 5, the dust collection water tank 16 is connected to the cooling water pipeline through the water inlet pipe 17, the water in the dust collection water tank 16 is used to penetrate into the wet cloth strips 15, the wet cloth strips 15 capture the dust in the dust collection box 5 to prevent dust leakage, the dust collection box 5 and the slag falling port sealing chamber 10 are provided with holes, the dust collection pipeline 18 is connected to the tail flue of the boiler, and the dust collector of the boiler is used to remove dust.
[0024] The discharge port of the slag cooler 4 is provided with a rubber belt and is sealed by a steel plate to form a dust collection box, the dust collection box is provided with a dust collection cloth strip, the dust collection pipeline 1 is connected to the dust collection box, the dust collection pipeline 1 is connected to the dust collection main pipe 6, the dust volume adjusting valve 8 is installed on the dust collection main pipe 6 and is used to control the dust volume, the dust collection pipeline 1 is connected to the dust collection main pipe 6, and the dust collection main pipe 6 is connected to the dust collector. The gate opening of the operation dust volume adjusting valve 8 is used to control the dust volume of the slag conveying system, the dust concentration of the slag conveying system is monitored in real time through a camera or a monitor, and the dust volume is adjusted to achieve the best dust collection and dust removal effect, so that the dust of the slag conveying system meets the standard, the dust collection main pipe is connected to the tail flue of the boiler, the negative pressure wind of the flue is used to remove the dusting in the sealing room of the slag conveying system, and the dust is finally removed by the bag dust collector of the boiler. Through the optimization design of the dust collection pipeline and the dust volume valve, more reasonable airflow organization is realized, and the dust removal effect is enhanced. The dust generated by the coal-fired boiler slag conveying system is completely isolated and does not enter the external air.
[0025] The sealing room 3 is installed along the coal-fired boiler slag conveying pit corridor and the slag ditch, the sealing room 3 covers the slag cooler 4 and the horizontal slag conveying belt 2, and the sealing room 3 is provided with a dustproof soundproof door 9.
[0026] In the circulating fluidized bed boiler, the slag generated after the fuel is burned is discharged through the slag discharge port at the bottom of the furnace, the high-temperature slag discharged is first cooled in the slag cooler 4 to reduce the temperature of the slag, and after the slag is cooled in the slag cooler 4, the slag is conveyed into the horizontal slag conveying belt 2, the horizontal slag conveying belt 2 drives the roller 13 to rotate through the speed reducer, and the slag on the belt falls into the large-angle hopper belt 7 through the slag falling hopper 11, and the large-angle hopper belt 7 conveys the slag into the slag bin for storage. In order to prevent the ash and slag from seeping along the belt from the bottom of the roller, the belt cleaning device 12 is installed on the steel frame of the slag falling hopper 11 to effectively prevent the ash and slag from seeping along the belt. During the conveying process, the ash and slag falling from the slag falling hopper 11 will generate dust, which will pollute the environment if it is scattered into the air.
[0027] The discharge outlet of the slag cooler 4 and the slag falling hopper 11 of the large-inclination hopper belt conveyor 7 are designed with dust isolation structure, the dust collecting box 5 is installed on the slag falling hopper 11, the dust collecting cloth is installed on the upper part of the dust collecting box 5, the slag dust particles can be more effectively captured and collected, and the dust diffusion speed is controlled. The slag conveying system sealing room 3 is installed along the slag conveying system pit corridor and slag channel of the coal-fired boiler, and is layer by layer isolated and sealed, which serves as a dust prevention, the original slag channel guardrail is used as a framework, the color steel tile and transparent glass steel tile are installed for full sealing, the dust prevention and sound insulation door 9 is designed to prevent dust diffusion and avoid dust entering the external air.
[0028] The slag falling port blocking belt 19 is installed on both sides of the slag falling hopper 11 to effectively prevent the ash and slag from splashing outside the belt, the whole slag falling port is fully sealed by the steel plate to form the slag falling port sealing chamber 10, the wet cloth strips 15 are distributed in the dust collecting box 5 above the slag falling hopper 11, the water inlet pipe 17 supplies water to the dust collecting water tank 16 on the top of the dust collecting box 5, after the water tank is supplied with water, the water permeates into the wet cloth strips 15, the wet cloth strips 15 effectively capture the ash dust in the dust collecting box 5 to control dust leakage, the openings on the dust collecting box 5 and the slag falling port sealing chamber 10 are connected to the boiler tail flue through the dust collecting pipeline 18, the dust in the slag falling port sealing chamber 10 and the dust collecting box 5 is sucked out by the flue negative pressure wind, which serves as a dust collection, the dust is removed by the boiler dust collector to meet the environmental protection requirements.
[0029] The slag falling port blocking belt 19 and the belt sweeper 12 control the slag dust leakage of the slag conveying system, the dust collecting box 5 and the slag falling sealing chamber 10 control the dust flying, the dust collecting pipeline 18 absorbs the dust in the slag falling sealing chamber 10 and the dust collecting box 5 to control the dust in the slag falling port sealing chamber 10, which effectively prevents the dust from floating into the air to pollute the environment, and improves the working environment.
[0030] As described above, the multi-dust prevention structure significantly improves the dust prevention efficiency, effectively reduces the dust concentration in the working place, protects the health of workers and environmental safety, and meets the environmental protection requirements. The discharge outlet of the slag cooler 4 and the slag falling hopper 11 of the large-inclination hopper belt conveyor 7 are designed with dust isolation structure, the wet cloth strips 15 in the dust collecting box 5 on the slag falling hopper 11 effectively capture the slag dust particles in the dust collecting box 5, the dust in the dust collecting box 5 and the slag falling port sealing chamber 10 is sucked out by the flue negative pressure wind, which serves as a dust collection, the slag falling port blocking belt 19 and the belt sweeper 12 control the slag dust leakage of the slag conveying system, and the dust collecting box 5 and the slag falling sealing chamber 10 control the dust flying.
[0031] The discharge port of the slag cooler 4 is provided with a rubber belt, and a dust collection box is formed around the rubber belt, and a dust collection cloth is installed on the dust collection box, and the dust in the slag conveying system sealing room is removed by using the flue negative pressure wind, so as to form a dust collection.
[0032] The slag conveying system sealing room 3 is installed along the pit corridor and the slag channel of the coal-fired boiler slag conveying system, and is sealed layer by layer, so as to form a dust prevention.
[0033] The dust isolation structure is designed in multiple ways, so that the slag leakage of the slag discharge port is greatly reduced, the labor intensity of manual slag cleaning is reduced, the dust in the slag conveying system is controlled through the design of the dust collection air volume control and optimization, the dust prevention structure is simple, easy to install and maintain, and the reliability and service life of the conveying system equipment are improved.
[0034] The above only describes preferred embodiments of the present application, and is not used to limit the present application, and for those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0035] The above only describes specific embodiments of the present application, but the protection scope of the present application is not limited to this, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which shall be included in the protection scope of the present application.
[0036] It should be noted that, in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.
Claims
1. A slag conveying device for a coal-fired boiler, characterized by: The discharge port of the slag cooler (4) is connected to the horizontal slag conveyor belt (2), and the discharge section of the horizontal slag conveyor belt (2) is connected to the large-angle hopper belt (7) through the slag hopper (11). The large-angle hopper belt (7) is connected to the slag storage at the conveying outlet. Slag-dropping port slag blocking belts (19) are installed on both sides of the slag hopper (11). The outer periphery of the slag hopper (11) is sealed by a steel plate to form a slag-dropping port sealing chamber (10). A dust collecting box (5) is installed on the upper part of the slag hopper (11). ), wet cloth strips (15) are distributed in the dust collecting box (5), a dust collecting water tank (16) is fixed on the top of the dust collecting box (5), the dust collecting water tank (16) is connected to the cooling water pipeline through the water inlet pipe (17), the water in the dust collecting water tank (16) is used to penetrate into the wet cloth strips (15), the wet cloth strips (15) capture the dust in the dust collecting box (5) to prevent the dust from leaking out, the dust collecting box (5) and the slag outlet sealing chamber (10) are opened, and are connected to the boiler tail flue through the dust collecting pipeline.
2. The slag conveying device for a coal-fired boiler according to claim 1, characterized in that: The discharge port of the slag cooler (4) is equipped with a rubber belt, which is sealed by a steel plate on the outside to form a dust collecting box. A dust collecting cloth strip is installed on the dust collecting box. The dust collecting box is connected to a dust collecting pipe (1). The dust collecting pipe (1) is connected to a dust collecting main pipe (6), and the dust collecting main pipe (6) is connected to a dust collector.
3. The slag conveying device for a coal-fired boiler according to claim 2, characterized in that: An air volume regulating valve (8) is installed on the dust collecting main pipe (6).
4. The slag conveying device for a coal-fired boiler according to claim 1, characterized in that: A sealed room (3) is installed along a slag conveying pit corridor and a slag ditch of a coal-fired boiler. The sealed room (3) covers a slag cooler (4) and a horizontal slag conveying belt conveyor (2).
5. The slag conveying device for a coal-fired boiler according to claim 4, characterized in that: The sealed room (3) is provided with a dustproof and soundproof door (9).
6. The slag conveying device for a coal-fired boiler according to claim 1, characterized in that: A belt cleaner (12) is installed on the slag bucket (11).