Partition door device for reducing air leakage of boiler

Abstract

The invention discloses a partition door device for reducing air leakage of a boiler. The partition door device comprises a slag hopper and a slag discharging assembly. The slag discharging assembly is connected to the lower portion of the slag hopper and comprises a partition door assembly and a slag drying machine, the partition door assembly comprises a supporting shell, a first partition door mechanism and a second partition door mechanism, the first partition door mechanism comprises a first driving mechanism and a first partition door, the first partition door is movably arranged in the supporting shell, the first driving mechanism is connected with the first partition door, and the second partition door is movably arranged in the supporting shell. The second partition door mechanism comprises a second driving mechanism and a second partition door, the second partition door is movably arranged in the supporting shell, and the second driving mechanism is connected with the second partition door. According to the partition door device for reducing air leakage of the boiler, the first partition door mechanism and the second partition door mechanism are alternately opened and closed to sequentially discharge slag, high-temperature flue gas is prevented from entering a slag dryer when the partition door is opened to discharge the slag, and heat loss and air leakage of the boiler in the slag discharge process can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of boilers, in particular to a partition door device for reducing air leakage of a boiler. BACKGROUND

[0002] In order to reduce air leakage of a boiler, a corresponding partition door device needs to be used, and the partition door device in the related art needs to be opened for discharging slag, and there is still a serious air leakage problem in the discharging process. Therefore, there is room for improvement. SUMMARY

[0003] The present application aims at solving at least one of the technical problems in the prior art. To this end, one object of the present application is to provide a partition door device for reducing air leakage of a boiler, which can reduce air leakage of the boiler caused in the process of discharging slag.

[0004] The partition door device for reducing air leakage of a boiler according to the embodiments of the present application comprises: a slag hopper having a slag inlet and a slag outlet, the slag inlet being located at the top of the slag hopper and being used to be connected with a slag discharge port of a boiler, the slag outlet being located at the bottom of the slag hopper; a slag discharging assembly connected below the slag hopper and comprising a partition door assembly and a dry slag machine, the partition door assembly comprising a support shell connected to the bottom of the slag hopper, the dry slag machine being connected below the support shell and having a slag discharge inlet, the support shell having a communication channel for communicating the slag outlet and the slag discharge inlet, the first partition door assembly comprising a first driving mechanism and a first partition door, the first partition door being movably arranged in the support shell, the first driving mechanism being connected with the first partition door for driving the first partition door to open or close the communication channel, the second partition door assembly comprising a second driving mechanism and a second partition door, the second partition door being movably arranged in the support shell, the second driving mechanism being connected with the second partition door for driving the second partition door to open or close the communication channel, the second partition door being located below the first partition door.

[0005] The partition door device for reducing air leakage of a boiler according to the embodiment of the present application can make the slag entering the slag hopper fall on the partition door assembly, and then be discharged, so as to reduce the high-temperature flue gas entering the slag dryer from the slag inlet, and reduce the heat loss caused by the high-temperature flue gas; and the first partition door is driven by the first driving mechanism, and the second partition door is driven by the second driving mechanism, so that the slag is discharged by the first partition door mechanism and the second partition door mechanism alternately, and the slag can be discharged in sequence, the high-temperature flue gas can be prevented from entering the slag dryer when the partition door is opened to discharge the slag, and the heat loss and the air leakage of the boiler caused by the slag discharge can be further reduced.

[0006] According to some embodiments of the present application, the first partition door and the second partition door are slidably arranged in the support shell along a first direction, and the first direction is parallel to the horizontal direction; the first partition door is arranged in two opposite directions along the first direction, and the first driving mechanism is two, and the two first driving mechanisms are connected with the two first partition doors respectively; the second partition door is arranged in two opposite directions along the first direction, and the second driving mechanism is two, and the two second driving mechanisms are connected with the two second partition doors respectively.

[0007] According to some embodiments of the present application, the bottom surface of the first partition door is flush with the top of the second partition door.

[0008] According to some embodiments of the present application, the partition door assembly further comprises a first support pipe and a second support pipe, the second support pipe is located below the first support pipe, the first support pipe and the second support pipe both extend along the first direction and are connected with the support shell, the first support pipe is located on the bottom surface of the first partition door and is in sliding fit with the bottom of the first partition door, and the second support pipe is located on the bottom surface of the second partition door and is in sliding fit with the bottom of the second partition door.

[0009] According to some embodiments of the present application, the partition door device comprises: an air extraction mechanism and a filtering mechanism, the air extraction mechanism comprises an air extraction pump, a first air extraction pipe and a second air extraction pipe, the first air extraction pipe and the second air extraction pipe are connected with the inlet and the outlet of the air extraction pump respectively, the first air extraction pipe is connected with the top of the slag pot for extracting hot air in the upper part of the slag pot, the second air extraction pipe is connected with the partition door assembly for conveying the hot air extracted by the first air extraction pipe into the communication passage; the filtering mechanism comprises a filtering component, the filtering component comprises a mounting shell and a filtering plate, the top of the slag pot is provided with an air extraction hole, the mounting shell is mounted in the air extraction hole, the side of the mounting shell facing the inside of the slag pot is formed with an open hole, the filtering plate is mounted at the open hole, the top of the mounting shell is formed with a first connecting through hole, the first air extraction pipe is connected with the first connecting through hole, and the first connecting through hole communicates the first air extraction pipe with the inner cavity of the mounting shell.

[0010] According to some embodiments of the present application, the second partition door is formed with an air passage cavity, the air passage cavity is provided with a support plate, the top of the second partition door is formed with an air outlet hole, the second driving mechanism comprises a second oil cylinder and a second connecting shaft, the second connecting shaft connects the second oil cylinder and the second partition door, the second connecting shaft is formed with an air flow passage, the second air extraction pipe is connected with the second connecting shaft, and the air flow passage communicates the second air extraction pipe with the air passage cavity.

[0011] According to some embodiments of the present application, the top of the second partition door is provided with a filtering shell, the filtering shell covers the air outlet hole, the filtering shell has a filtering cavity therein, the filtering shell is formed with an air passage hole, and the filtering cavity communicates the air outlet hole with the air passage hole.

[0012] According to some embodiments of the present application, the filtering mechanism comprises a third driving mechanism, the third driving mechanism comprises a motor, a first bevel gear and a second bevel gear, the motor is mounted on the top of the slag pot and located outside the slag pot, the motor is connected with the first bevel gear for driving the first bevel gear to rotate, the second bevel gear is engaged with the first bevel gear, and the gear shaft of the second bevel gear is connected with the filtering component for driving the filtering component to rotate; the top of the slag pot is provided with a scraping piece, the scraping piece is located inside the slag pot and in contact with the bottom surface of the filtering plate.

[0013] According to some embodiments of the present application, the partition door device comprises a back-blowing assembly, the back-blowing assembly comprises an air compressor, a solenoid valve, an air pipe, an air guide pipe and a jet strip, the air pipe is connected with an outlet of the air compressor, the solenoid valve is connected between the air pipe and the air guide pipe for connecting or partitioning the air pipe and the air guide pipe, an end of the air guide pipe away from the air pipe is connected with the jet strip, the jet strip is formed with a plurality of jet holes, the jet strip is located in the mounting shell and fixed to a top of the mounting shell, the top of the mounting shell is formed with a second connecting through hole, the air guide pipe passes through the second connecting through hole.

[0014] According to some embodiments of the present application, the back-blowing assembly comprises a heating component, the heating component comprises a heating shell and a heating wire, the heating shell has a heating cavity inside and is connected between the outlet of the air compressor and the air pipe, the heating wire is arranged in the heating cavity.

[0015] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which: Figure 1 is a sectional view of a partition door device according to some embodiments of the present application; Figure 2 is Figure 1 is a schematic view of a second partition door mechanism in Figure 3 is Figure 2 is a partial enlarged view of A in Figure 4 is Figure 1 is a partial side view of a support shell in Figure 5 is Figure 1 is a schematic view of an air extraction mechanism in Figure 6 is Figure 1 is a schematic view of a filtering mechanism in Figure 7 is Figure 1 is a schematic view of a back-blowing assembly in

[0017] LIST OF REFERENCE NUMERALS 100, partition door device; 10, slag pot; 11, slag inlet; 12, slag outlet; 13, air extraction hole; 20, slag discharging assembly; 30, partition door assembly; 31, support shell; 311, communication passage; 32, first partition door mechanism; 321, first driving mechanism; 322, first partition door; 33, second partition door mechanism; 331, second driving mechanism; 332, second partition door; 333, air outlet hole; 334, second oil cylinder; 335, second connecting shaft; 336, air flow passage; 337, filter shell; 338, air vent hole; 34, first support pipe; 35, second support pipe; 36, air vent cavity; 361, support plate; 40, dry slag machine; 50, air extraction mechanism; 51, air extraction pump; 52, first air extraction pipe; 53, second air extraction pipe; 60, filter mechanism; 61, filter component; 62, mounting shell; 621, first connecting through hole; 622, second connecting through hole; 63, filter plate; 64, third driving mechanism; 641, motor; 642, first bevel gear; 643, second bevel gear; 65, scraper; 66, anti-dropping ring; 70, back flushing assembly; 71, air compressor; 72, solenoid valve; 73, air vent pipe; 74, air guide pipe; 75, jet strip; 76, filter; 77, heating component; 771, heating shell. DETAILED DESCRIPTION

[0018] Embodiments of the present application are described in detail below with reference to several drawings. The embodiments described below are illustrative of the present application and are not intended to limit the present application. The same or similar components have the same or similar reference numbers throughout the several drawings.

[0019] Reference is made to Figures 1-7 A partition door device 100 for reducing air leakage of a boiler according to an embodiment of the present application is described below.

[0020] Reference is made to Figures 1-2 A partition door device 100 for reducing air leakage of a boiler according to an embodiment of the present application is described below.

[0021] The slag hopper 10 has an inlet 11 and an outlet 12. The inlet 11 is located at the top of the slag hopper 10 and is used to connect with a slag outlet of the boiler. The outlet 12 is located at the bottom of the slag hopper 10. The slag in the boiler can enter the slag hopper 10 through the slag outlet of the boiler and the inlet 11 of the slag hopper 10.

[0022] The slag discharging assembly 20 is connected below the slag pot 10 and comprises a partition door assembly 30 and a dry slag machine 40. The partition door assembly 30 comprises a support shell 31, a first partition door mechanism 32 and a second partition door mechanism 33. The support shell 31 is connected to the bottom of the slag pot 10 and is used to support the first partition door mechanism 32 and the second partition door mechanism 33. The dry slag machine 40 is connected below the support shell 31 and has a slag discharging inlet. The support shell 31 has a communication passage 311 for communicating the slag discharging opening 12 with the slag discharging inlet. The dry slag machine 40 is used to cool and transport the slag discharged from the slag discharging opening 12 into the dry slag machine 40 through the communication passage 311 to the outside of the boiler.

[0023] The first partition door mechanism 32 and the second partition door mechanism 33 can reduce the heat loss caused by the high-temperature flue gas entering the dry slag machine 40 when the first partition door mechanism 32 and the second partition door mechanism 33 are closed.

[0024] The first partition door mechanism 32 comprises a first driving mechanism 321 and a first partition door 322. The first partition door 322 is movably arranged in the support shell 31, for example, the first partition door 322 is movable in the horizontal direction. The first driving mechanism 321 is connected with the first partition door 322 and is used to drive the first partition door 322 to open or close the communication passage 311. For example, the first partition door 322 can be one or two oppositely arranged. For example, the first driving mechanism 321 can comprise a first oil cylinder and a first connecting shaft. The first connecting shaft connects the first oil cylinder with the first partition door 322. The first oil cylinder is used to drive the first partition door 322 to move.

[0025] The second partition door mechanism 33 comprises a second driving mechanism 331 and a second partition door 332. The second partition door 332 is movably arranged in the support shell 31, for example, the second partition door 332 is movable in the horizontal direction. The second driving mechanism 331 is connected with the second partition door 332 and is used to drive the second partition door 332 to open or close the communication passage 311. For example, the second partition door 332 can be one or two oppositely arranged. For example, the second driving mechanism 331 comprises a second oil cylinder 334 and a second connecting shaft 335. The second connecting shaft 335 connects the second oil cylinder 334 with the second partition door 332. The second oil cylinder 334 is used to drive the second partition door 332 to move.

[0026] The second partition door 332 is located below the first partition door 322. When the first partition door 322 opens the communication passage 311 and the second partition door 332 closes the communication passage 311, the slag accumulated on the first partition door 322 falls onto the second partition door 332.

[0027] The partition door assembly 30 can be configured to open the communication passage 311 by one of the first partition door 322 and the second partition door 332 and close the communication passage 311 by the other of the first partition door 322 and the second partition door 332 during the slagging process. In this way, during the slagging process, the high-temperature flue gas in the slag tank 10 can be prevented from leaking from the communication passage 311 to the dry slag machine 40, thereby reducing heat loss and preventing boiler air leakage.

[0028] For example, when the boiler needs to discharge slag, the slag is discharged from the slagging port of the boiler, falls into the slag tank 10 from the slag inlet 11, and is accumulated on the first partition door 322. When a certain amount of slag is accumulated on the first partition door 322, the first driving mechanism 321 drives the first partition door 322 to open the communication passage 311, so that the accumulated slag on the first partition door 322 falls onto the second partition door 332. The first driving mechanism 321 then drives the first partition door 322 to close the communication passage 311. At this time, the second driving mechanism 331 drives the second partition door 332 to open the communication passage 311, so that the slag falls into the dry slag machine 40 from the slag inlet through the communication passage 311, is cooled and treated, and is transported outside the boiler for recycling.

[0029] The first driving mechanism 321 then drives the first partition door 322 to open the communication passage 311, so that the first partition door 322 and the second partition door 332 are alternately opened and closed to discharge the slag. In this way, the high-temperature flue gas can be prevented from entering the dry slag machine 40 when the partition door is opened to discharge the slag, so that the partition door assembly 30 always maintains the partitioning effect, thereby further reducing heat loss and preventing boiler air leakage.

[0030] The partition door device 100 according to the embodiment of the present application can make the slag entering the slag tank 10 fall onto the partition door assembly 30 and then be discharged, thereby reducing heat loss caused by the high-temperature flue gas entering the dry slag machine 40 from the slag inlet 11. The first driving mechanism 321 drives the first partition door 322, and the second driving mechanism 331 drives the second partition door 332, so that the first partition door mechanism 32 and the second partition door mechanism 33 are alternately opened and closed to discharge the slag. In this way, the slag can be sequentially discharged, the high-temperature flue gas can be prevented from entering the dry slag machine 40 when the partition door is opened to discharge the slag, and heat loss and boiler air leakage during the slagging process can be further reduced.

[0031] Reference Figures 1-2According to some embodiments of the present application, the first partition door 322 and the second partition door 332 are both slidably arranged in the support shell 31 along a first direction (e1 in the drawings) which is parallel to the horizontal direction; the first partition door 322 is arranged in two opposite directions along the first direction, and the first driving mechanism 321 is arranged in two, with each of the two first driving mechanisms 321 connected to one of the two first partition doors 322; the second partition door 332 is arranged in two opposite directions along the first direction, and the second driving mechanism 331 is arranged in two, with each of the two second driving mechanisms 331 connected to one of the two second partition doors 332.

[0032] For example, when the first partition door mechanism 32 discharges slag, the two first driving mechanisms 321 respectively drive the two first partition doors 322 to move in the first direction away from each other, thereby opening the communication passage 311; after the first partition door 322 discharges slag, the two first driving mechanisms 321 respectively drive the two first partition doors 322 to move in the first direction towards each other, thereby closing the communication passage 311; when the second partition door mechanism 33 discharges slag, the two second driving mechanisms 331 respectively drive the two second partition doors 332 to move in the first direction away from each other, thereby opening the communication passage 311; after the second partition door 332 discharges slag, the two second driving mechanisms 331 respectively drive the two second partition doors 332 to move in the first direction towards each other, thereby closing the communication passage 311. By using two partition doors arranged opposite to each other to open and close the partition door, the driving time during the opening and closing of the partition door can be reduced, and the efficiency of slag discharge can be improved.

[0033] Reference Figure 1 According to some embodiments of the present application, the bottom surface of the first partition door 322 is flush with the top of the second partition door 332.

[0034] For example, during the process of closing the first partition door 322 and opening the second partition door 332, the top of the second partition door 332 can be scraped with the bottom surface of the first partition door 322, and the slag adhered to the bottom surface of the first partition door 322 can be scraped off. Thus, the influence of the slag adhered to the bottom surface of the first partition door 322 on the movement of the first partition door 322 can be reduced, and the opening and closing process of the first partition door 322 can be smoother.

[0035] Reference Figure 4According to some embodiments of the present application, the partition door assembly 30 further comprises a first support pipe 34 and a second support pipe 35, the second support pipe 35 is located below the first support pipe 34, the first support pipe 34 and the second support pipe 35 both extend along the first direction and are connected with the support shell 31. For example, the first support pipe 34 can be one, and the first support pipe 34 can also be multiple, the multiple first support pipes 34 can be arranged at intervals along a second direction (refer to e2 in the drawings), the second direction is parallel to the horizontal direction and perpendicular to the first direction; the second support pipe 35 can be one, and the second support pipe 35 can also be multiple, the multiple second support pipes 35 can be arranged at intervals along the second direction.

[0036] The first support pipe 34 is located at the bottom of the first partition door 322 and is in sliding fit with the bottom of the first partition door 322, and the second support pipe 35 is located at the bottom of the second partition door 332 and is in sliding fit with the bottom of the second partition door 332.

[0037] The first support pipe 34 and the second support pipe 35 can improve the structural strength and stability of the support shell 31, and the first support pipe 34 supports the first partition door 322, and the second support pipe 35 supports the second partition door 332. The sliding fit of the support pipe with the bottom of the partition door can reduce the resistance of the opening and closing movement of the first partition door 322 and the second partition door 332, reduce the energy consumption of the first driving mechanism 321 and the second driving mechanism 331, and also reduce the wear of the first support pipe 34 and the second support pipe 35.

[0038] Reference Figures 5-6 According to some embodiments of the present application, the partition door device 100 comprises an air extraction mechanism 50 and a filtering mechanism 60. The air extraction mechanism 50 comprises an air extraction pump 51, a first air extraction pipe 52 and a second air extraction pipe 53, the first air extraction pipe 52 and the second air extraction pipe 53 are connected with the inlet and outlet of the air extraction pump 51 respectively, the first air extraction pipe 52 is connected with the top of the slag pot 10 for extracting hot air in the upper part of the slag pot 10, and the second air extraction pipe 53 is connected with the partition door assembly 30 for conveying the hot air extracted by the first air extraction pipe 52 into the communication passage 311. One end of the first air extraction pipe 52 is connected with the inlet of the air extraction pump 51, and the other end of the first air extraction pipe 52 is connected with the top of the slag pot 10; one end of the second air extraction pipe 53 is connected with the outlet of the air extraction pump 51, and the other end of the second air extraction pipe 53 is connected with the partition door assembly 30.

[0039] For example, during the slagging process, the air extraction mechanism 50 extracts the hot air on the upper part of the slag pot 10 through the first air extraction pipe 52, the hot air enters the second air extraction pipe 53 through the air extraction pump 51, and then is transported to the communication passage 311. By extracting the hot air on the upper part of the slag pot 10, the pressure difference between the gas in the slag pot 10 and the communication passage 311 can be balanced, thereby reducing the escape of flue gas from the gap of the partition door assembly 30 and reducing the air leakage of the boiler.

[0040] The filtering mechanism 60 includes a filtering component 61, which includes a mounting shell 62 and a filter plate 63. The top of the slag pot 10 is provided with an air extraction hole 13, and the mounting shell 62 is mounted in the air extraction hole 13. The side of the mounting shell 62 facing the inside of the slag pot 10 is formed with an open opening, and the filter plate 63 is mounted at the open opening. For example, the filter plate 63 can be connected to the mounting shell 62 through an anti-dropping ring 66. The top of the mounting shell 62 is formed with a first connecting through hole 621, and the first air extraction pipe 52 is connected to the first connecting through hole 621. The first connecting through hole 621 connects the first air extraction pipe 52 and the inner cavity of the mounting shell 62.

[0041] For example, when the air extraction mechanism 50 extracts the hot air on the upper part of the slag pot 10, the gas enters the mounting shell 62 through the filter plate 63 of the filtering component 61, and then enters the first air extraction pipe 52 from the first connecting through hole 621. The solid impurities in the gas are blocked outside the mounting shell 62 by the filter plate 63, which can prevent the slag debris from entering the first air extraction pipe 52 and the air extraction pump 51 with the air extraction mechanism 50, reduce the solid impurities in the gas extracted by the air extraction mechanism 50, and reduce the risk of clogging of the air extraction mechanism 50.

[0042] Reference Figures 2-3 According to some embodiments of the present application, the second partition door 332 is formed with an air passage cavity 36, the air passage cavity 36 is provided with a support plate 361, the top of the second partition door 332 is formed with an air outlet hole 333, the second driving mechanism 331 includes a second oil cylinder 334 and a second connecting shaft 335, the second connecting shaft 335 connects the second oil cylinder 334 and the second partition door 332, the second connecting shaft 335 is formed with an airflow passage 336, and the second air extraction pipe 53 is connected to the second connecting shaft 335. The airflow passage 336 connects the second air extraction pipe 53 and the air passage cavity 36.

[0043] For example, in the slagging process, the exhaust pump 51 in the exhaust mechanism 50 extracts the hot air on the upper part of the slag pot 10 through the first exhaust pipe 52, the hot air enters the second exhaust pipe 53 through the exhaust pump 51, and then is transported to the air cavity 36 of the second partition door 332 through the airflow channel 336 of the second connecting shaft 335, and then is discharged into the communication channel 311. By forming the airflow channel 336 in the second connecting shaft 335 and the air cavity 36 in the second partition door 332, the space inside the second connecting shaft 335 and the second partition door 332 can be fully utilized for gas transportation, and a separate connecting pipeline for connecting the second exhaust pipe 53 and the partition door assembly 30 is saved. By extracting the hot air on the upper part of the slag pot 10 and then discharging it from the second partition door 332, the hot air can be used to blow off the slag on the second partition door 332, reducing the slag residue on the second partition door 332 when the second partition door 332 is opened to discharge the slag through the communication channel 311. The gas pressure difference between the inside and outside of the slag pot 10 can be balanced, the pressure of the flue gas inside the slag pot 10 can be reduced, and the flue gas can be prevented from escaping from the gap of the partition door assembly 30, thereby reducing the air leakage of the boiler.

[0044] Reference Figures 2-3 According to some embodiments of the present application, the top of the second partition door 332 is provided with a filter shell 337, the filter shell 337 covers the air outlet hole 333, the filter shell 337 has a filter cavity therein, and the filter shell 337 has an air hole 338 formed thereon, the filter cavity communicates the air outlet hole 333 and the air hole 338.

[0045] For example, when the gas is transported to the air cavity 36, the gas flows out of the air outlet hole 333, part of the solid impurities in the gas is filtered out through the filter cavity, and then is sprayed out of the air hole 338. By forming the air hole 338 on the filter shell 337, the impact force of the gas sprayed out of the air hole 338 can be increased, and by spraying the gas from the top of the second partition door 332, the impact force of the gas can be used to blow off the slag on the second partition door 332, reducing the slag residue on the second partition door 332 when the second partition door 332 is opened to discharge the slag through the communication channel 311. By providing the filter cavity in the filter shell 337, the solid impurities in the gas can also be reduced, preventing the air hole 338 from being blocked.

[0046] Reference Figure 6According to some embodiments of the present application, the filtering mechanism 60 comprises a third driving mechanism 64, the third driving mechanism 64 comprises a motor 641, a first bevel gear 642 and a second bevel gear 643, the motor 641 is installed on the top of the slag pot 10 and located outside the slag pot 10, the motor 641 is connected with the first bevel gear 642 for driving the first bevel gear 642 to rotate, the second bevel gear 643 is engaged with the first bevel gear 642, and the gear shaft of the second bevel gear 643 is connected with the filtering component 61 for driving the filtering component 61 to rotate. The top of the slag pot 10 is provided with a scraping piece 65, the scraping piece 65 is located inside the slag pot 10 and in contact with the bottom surface of the filtering plate 63.

[0047] For example, when the air extraction mechanism 50 extracts the hot gas on the upper part of the slag pot 10, the gas enters the installation shell 62 through the filtering plate 63 of the filtering component 61, and then enters the first air extraction pipe 52 from the first connecting through hole 621, and the solid impurities in the gas are blocked outside the installation shell 62 by the filtering plate 63. When the motor 641 of the third driving mechanism 64 is started, the motor 641 drives the filtering plate 63 to rotate through the engagement of the second bevel gear 643 and the first bevel gear 642, so that the filtering plate 63 has relative motion with the scraping piece 65, and the bottom surface of the filtering plate 63 is scraped by the scraping piece 65, so that the slag attached to the filtering plate 63 is scraped into the slag pot 10, preventing the slag and other impurities from blocking the holes of the filtering plate 63 in the filtering mechanism 60, and facilitating the normal operation of the air extraction mechanism 50.

[0048] Reference Figure 7 According to some embodiments of the present application, the partition door device 100 comprises a back-blowing assembly 70, the back-blowing assembly 70 comprises an air compressor 71, an electromagnetic valve 72, an air pipe 73, a gas guide pipe 74 and a jet strip 75.

[0049] The air pipe 73 is connected with the outlet of the air compressor 71, the air compressor 71 compresses the extracted external air into high-pressure gas, enhances the impact force of the gas sprayed by the back-blowing assembly 70, the electromagnetic valve 72 is connected between the air pipe 73 and the gas guide pipe 74 for connecting or cutting off the air pipe 73 and the gas guide pipe 74, the jet strip 75 is connected at the end of the gas guide pipe 74 away from the air pipe 73, the jet strip 75 is formed with a plurality of jet holes, which can further enhance the impact force of the gas sprayed by the jet strip 75, and the plurality of jet holes can also increase the directions of the impact of the sprayed gas, the jet strip 75 is located in the installation shell 62 and fixed to the top of the installation shell 62, the top of the installation shell 62 is formed with a second connecting through hole 622, and the gas guide pipe 74 is arranged in the second connecting through hole 622.

[0050] For example, the back-blowing assembly 70 can further comprise a filter 76. The filter 76 is connected to the air extraction end of the air compressor 71 to filter the extracted air.

[0051] For example, when the filter plate 63 needs to be dredged, the electromagnetic valve 72 and the air compressor 71 are opened, air is filtered by the filter 76 and then enters the air compressor 71 for compression, the compressed gas flows through the air pipe 73, the electromagnetic valve 72, the air guide pipe 74, and is finally sprayed from the spray hole of the spray strip 75, the gas sprays the filter plate 63, and at the same time, the third driving mechanism 64 drives the filter component 61 to rotate, thereby dredging the impurities retained in the filter holes of the filter plate. The sprayed gas also has a cleaning effect on the scraper 65, and the slag on the scraper 65 is blown into the slag bucket 10. By providing the back-blowing assembly 70 and spraying high-pressure gas, the impact force of the gas can clean the filter mechanism 60, prevent the filter holes of the filter plate 63 from being blocked by impurities such as slag, and facilitate the normal operation of the air extraction mechanism 50.

[0052] Reference Figure 7 According to some embodiments of the present application, the back-blowing assembly 70 comprises a heating component 77, the heating component 77 comprises a heating shell 771 and heating wires, the heating shell 771 has a heating cavity therein and is connected between the outlet of the air compressor 71 and the air pipe 73, and the heating wires are arranged in the heating cavity.

[0053] For example, when the filter plate 63 needs to be dredged, the heating wires in the heating shell 771 are powered, the heating wires are heated after being powered, the electromagnetic valve 72 and the air compressor 71 are opened, air is filtered by the filter 76 and then enters the air compressor 71 for compression, the compressed gas is converted into hot gas by the heating component 77, the hot gas flows through the air pipe 73, the electromagnetic valve 72, the air guide pipe 74, and is finally sprayed from the spray hole of the spray strip 75, the hot gas sprays the filter plate 63, and at the same time, the third driving mechanism 64 drives the filter component 61 to rotate, thereby dredging the impurities retained in the filter holes of the filter plate. By providing the heating component 77 in the back-blowing assembly 70, the gas blown into the filter plate 63 can be heated into hot gas, thereby reducing the heat loss of the external gas sprayed into the filter assembly to the flue gas in the slag bucket 10.

[0054] Reference Figures 1-7 The partition door device 100 in some embodiments of the present application is described below.

[0055] In this embodiment, the partition door device 100 comprises a slag bucket 10, a slag discharging assembly 20, an air extraction mechanism 50, a filter mechanism 60, and a back-blowing assembly 70.

[0056] The slag bucket 10 has an inlet 11 and an outlet 12, the inlet 11 is located at the top of the slag bucket 10 and is used to connect with the slag discharge port of the boiler, and the outlet 12 is located at the bottom of the slag bucket 10.

[0057] The slag discharging assembly 20 is connected below the slag pot 10 and comprises a partition door assembly 30 and a dry slag machine 40, the partition door assembly 30 comprises a support shell 31, a first partition door mechanism 32, a second partition door mechanism 33, a first support pipe 34 and a second support pipe 35, the support shell 31 is connected to the bottom of the slag pot 10, the dry slag machine 40 is connected below the support shell 31 and has a slag discharging inlet, and the support shell 31 has a communication channel 311 for communicating the slag outlet 12 and the slag discharging inlet.

[0058] The first partition door mechanism 32 comprises a first driving mechanism 321 and a first partition door 322, the first partition door 322 is movably arranged in the support shell 31, and the first driving mechanism 321 is connected with the first partition door 322 for driving the first partition door 322 to open or close the communication channel 311; the second partition door mechanism 33 comprises a second driving mechanism 331 and a second partition door 332, the second partition door 332 is movably arranged in the support shell 31, and the second driving mechanism 331 is connected with the second partition door 332 for driving the second partition door 332 to open or close the communication channel 311. The second partition door 332 is located below the first partition door 322, and the bottom surface of the first partition door 322 is flush with the top of the second partition door 332. The first partition door 322 and the second partition door 332 are slidably arranged in the support shell 31 along the first direction, the first partition door 322 is two oppositely arranged along the first direction, the first driving mechanism 321 is two, and the two first driving mechanisms 321 are respectively connected with the two first partition doors 322; the second partition door 332 is two oppositely arranged along the first direction, the second driving mechanism 331 is two, and the two second driving mechanisms 331 are respectively connected with the two second partition doors 332.

[0059] The second support pipe 35 is located below the first support pipe 34, and the first support pipe 34 and the second support pipe 35 both extend along the first direction and are connected with the support shell 31, the first support pipe 34 is located on the bottom surface of the first partition door 322 and is in sliding fit with the bottom of the first partition door 322, and the second support pipe 35 is located on the bottom surface of the second partition door 332 and is in sliding fit with the bottom of the second partition door 332.

[0060] The filtering mechanism 60 comprises a filtering component 61 and a third driving mechanism 64. The filtering component 61 comprises a mounting shell 62 and a filtering plate 63. The top of the residue bucket 10 is provided with an air extraction hole 13. The mounting shell 62 is mounted in the air extraction hole 13. An open end of the mounting shell 62 facing the inside of the residue bucket 10 is formed with an open hole. The filtering plate 63 is mounted at the open hole. The top of the mounting shell 62 is formed with a first connecting through hole 621. The first air extraction pipe 52 is connected with the first connecting through hole 621. The first connecting through hole 621 communicates the first air extraction pipe 52 with the inner cavity of the mounting shell 62. The third driving mechanism 64 comprises a motor 641, a first bevel gear 642 and a second bevel gear 643. The motor 641 is mounted on the top of the residue bucket 10 and located outside the residue bucket 10. The motor 641 is connected with the first bevel gear 642 for driving the first bevel gear 642 to rotate. The second bevel gear 643 is engaged with the first bevel gear 642. The gear shaft of the second bevel gear 643 is connected with the filtering component 61 for driving the filtering component 61 to rotate. The top of the residue bucket 10 is provided with a scraping piece 65. The scraping piece 65 is located inside the residue bucket 10 and in contact with the bottom surface of the filtering plate 63.

[0061] The second partition door 332 is formed with an air passage cavity 36. The air passage cavity 36 is provided with a support plate 361. The top of the second partition door 332 is formed with an air outlet hole 333. The second driving mechanism 331 comprises a second oil cylinder 334 and a second connecting shaft 335. The second connecting shaft 335 connects the second oil cylinder 334 with the second partition door 332. The second connecting shaft 335 is formed with an air flow passage 336. The second air extraction pipe 53 is connected with the second connecting shaft 335. The air flow passage 336 communicates the second air extraction pipe 53 with the air passage cavity 36. The top of the second partition door 332 is provided with a filtering shell 337. The filtering shell 337 covers the air outlet hole 333. The filtering shell 337 has a filtering cavity therein. The filtering shell 337 is formed with an air passage hole 338. The filtering cavity communicates the air outlet hole 333 with the air passage hole 338.

[0062] The back flushing assembly 70 comprises an air compressor 71, a filter 76, a solenoid valve 72, an air passage pipe 73, an air guide pipe 74, a jet strip 75 and a heating component 77. The air passage pipe 73 is connected with the outlet of the air compressor 71. The solenoid valve 72 is connected between the air passage pipe 73 and the air guide pipe 74 for communicating or blocking the air passage pipe 73 with the air guide pipe 74. The air guide pipe 74 is connected with the jet strip 75 at the end away from the air passage pipe 73. The jet strip 75 is formed with a plurality of jet holes. The jet strip 75 is located in the mounting shell 62 and fixed to the top of the mounting shell 62. The top of the mounting shell 62 is formed with a second connecting through hole 622. The air guide pipe 74 penetrates the second connecting through hole 622. The heating component 77 comprises a heating shell 771 and heating wires. The heating shell 771 has a heating cavity therein and is connected between the outlet of the air compressor 71 and the air passage pipe 73. The heating wires are arranged in the heating cavity. The filter 76 is connected at the air extraction end of the air compressor 71 for filtering the extracted air.

[0063] When the boiler needs to discharge the slag, the slag is discharged from the slag discharge port of the boiler, falls into the slag hopper 10 from the slag inlet 11, and is accumulated on the first partition door 322. When a certain amount of slag is accumulated on the first partition door 322, the first driving mechanism 321 drives the first partition door 322 to open the communication passage 311, so that the accumulated slag on the first partition door 322 falls on the second partition door 332. The first driving mechanism 321 drives the first partition door 322 to close the communication passage 311. At this time, the second driving mechanism 331 drives the second partition door 332 to open the communication passage 311, so that the slag falls into the dry slag machine 40. The hot air in the upper part of the slag hopper 10 is extracted by the air extraction pump 51 in the air extraction mechanism 50 through the first air extraction pipe 52. The hot air enters the second air extraction pipe 53 through the air extraction pump 51, and is then transported to the air cavity 36 of the second partition door 332 through the airflow passage 336 of the second connecting shaft 335. The gas is sprayed from the air hole 338 of the second partition door 332, and the residual slag on the second partition door 332 is blown off and falls into the dry slag machine 40. The slag in the dry slag machine 40 is subjected to cooling treatment and is transported to the outside of the boiler for recycling. After the second driving mechanism 331 drives the second partition door 332 to close the communication passage 311, the first driving mechanism 321 drives the first partition door 322 to open the communication passage 311, so as to alternately discharge the slag by opening and closing the first partition door 322 and the second partition door 332.

[0064] In the present application, two partition door assemblies are shown for the purpose of illustration, but a person skilled in the art can understand that the present application can be applied to three or more partition door assemblies after reading the following technical solutions, which also falls within the protection scope of the present application.

[0065] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0066] In the description of the present application, "first feature" and "second feature" can include one or more features.

[0067] In the description of the present application, "a plurality of" means two or more.

[0068] In the description of the application, a first feature being "on", "above", or "on top" of a second feature can include the first and second features being directly in contact, or the first and second features not being directly in contact but being in contact through another feature between them.

[0069] In the description of the application, a first feature being "on", "above", and "on top" of a second feature includes the first feature being directly on, above, and on top of the second feature, or only indicating the first feature being horizontally higher than the second feature.

[0070] In the description of the application, the description of the reference terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description of the application, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] Although the embodiments of the application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the application, and the scope of the application is defined by the claims and their equivalents.

Claims

1. A damper door arrangement for reducing air leakage from a boiler, characterised in that, The application relates to a slag discharging device. The slag discharging device comprises a slag hopper, a slag discharging assembly and a gas pumping mechanism. The slag hopper has a slag inlet and a slag outlet, the slag inlet is arranged at the top of the slag hopper and is connected with a slag discharging port of a boiler, and the slag outlet is arranged at the bottom of the slag hopper.

2. The damper door arrangement for reducing air leakage from a boiler of claim 1, wherein, The slag discharging assembly is arranged below the slag hopper and comprises a partition door assembly and a dry slag machine. The partition door assembly comprises a supporting shell, a first partition door mechanism and a second partition door mechanism. The supporting shell is connected with the bottom of the slag hopper.

3. The damper door arrangement for reducing air leakage from a boiler of claim 2, wherein, The dry slag machine is arranged below the supporting shell and has a slag discharging inlet.

4. The damper door arrangement for reducing air leakage from a boiler of claim 2, wherein, The supporting shell has a communication channel for connecting the slag outlet with the slag discharging inlet.

5. A damper gate arrangement for reducing air leakage from a boiler according to any one of claims 1-4, characterized in that The first partition door mechanism comprises a first driving mechanism and a first partition door. The first partition door is movably arranged in the supporting shell and is connected with the first driving mechanism for driving the first partition door to open or close the communication channel. The second partition door mechanism comprises a second driving mechanism and a second partition door. The second partition door is movably arranged in the supporting shell and is connected with the second driving mechanism for driving the second partition door to open or close the communication channel. The second partition door is arranged below the first partition door. The first partition door and the second partition door are slidably arranged in the supporting shell along a first direction which is parallel to the horizontal direction. The first partition door is arranged in pairs along the first direction. The first driving mechanism is arranged in pairs. Each of the first driving mechanism is connected with each of the first partition door. The second partition door is arranged in pairs along the first direction. The second driving mechanism is arranged in pairs. Each of the second driving mechanism is connected with each of the second partition door. The bottom surface of the first partition door is flush with the top of the second partition door. The partition door assembly further comprises a first supporting pipe and a second supporting pipe. The second supporting pipe is arranged below the first supporting pipe. The first supporting pipe and the second supporting pipe are both arranged along the first direction and are connected with the supporting shell. The first supporting pipe is arranged at the bottom surface of the first partition door and is in sliding fit with the bottom of the first partition door. The second supporting pipe is arranged at the bottom surface of the second partition door and is in sliding fit with the bottom of the second partition door. The gas pumping mechanism comprises a gas pumping pump, a first gas pumping pipe and a second gas pumping pipe. The first gas pumping pipe and the second gas pumping pipe are respectively connected with the inlet and the outlet of the gas pumping pump. The first gas pumping pipe is connected with the top of the slag hopper for pumping hot gas in the upper part of the slag hopper. The second gas pumping pipe is connected with the partition door assembly for conveying the hot gas pumped by the first gas pumping pipe into the communication channel. The filter mechanism comprises a filter component, the filter component comprises a mounting shell and a filter plate, the top of the residue bucket is provided with an air extraction hole, the mounting shell is mounted in the air extraction hole, the side of the mounting shell facing the inside of the residue bucket is formed with an open hole, the filter plate is mounted at the open hole, the top of the mounting shell is formed with a first connecting through hole, the first air extraction pipe is connected with the first connecting through hole, and the first connecting through hole communicates the first air extraction pipe with the inner cavity of the mounting shell.

6. The damper door arrangement for reducing air leakage from a boiler of claim 5, wherein, The second partition door is formed with an air passage cavity, the air passage cavity is provided with a support plate, the top of the second partition door is formed with an air outlet hole, the second driving mechanism comprises a second oil cylinder and a second connecting shaft, the second connecting shaft connects the second oil cylinder and the second partition door, the second connecting shaft is formed with an airflow passage, the second air extraction pipe is connected with the second connecting shaft, and the airflow passage communicates the second air extraction pipe with the air passage cavity.

7. The damper door arrangement for reducing air leakage from a boiler of claim 6, wherein, The top of the second partition door is provided with a filter shell, the filter shell covers the air outlet hole, the filter shell has a filter cavity therein, and the filter shell is formed with an air passage hole.

8. The damper door arrangement for reducing air leakage from a boiler of claim 5, wherein, The filter mechanism comprises a third driving mechanism, the third driving mechanism comprises a motor, a first bevel gear and a second bevel gear, the motor is mounted at the top of the residue bucket and located outside the residue bucket, the motor is connected with the first bevel gear for driving the first bevel gear to rotate, the second bevel gear is engaged with the first bevel gear, and the gear shaft of the second bevel gear is connected with the filter component for driving the filter component to rotate. The top of the residue bucket is provided with a scraper, the scraper is located inside the residue bucket and in contact with the bottom surface of the filter plate.

9. The damper door arrangement for reducing air leakage from a boiler of claim 5, wherein, The back-blowing assembly comprises an air compressor, a solenoid valve, an air passage pipe, an air guide pipe and a jet strip, the air passage pipe is connected with the outlet of the air compressor, the solenoid valve is connected between the air passage pipe and the air guide pipe for communicating or blocking the air passage pipe and the air guide pipe, one end of the air guide pipe away from the air passage pipe is connected with the jet strip, the jet strip is formed with a plurality of jet holes, the jet strip is located in the mounting shell and fixed to the top of the mounting shell, the top of the mounting shell is formed with a second connecting through hole, and the air guide pipe penetrates through the second connecting through hole.

10. The damper door arrangement for reducing air leakage from a boiler of claim 9, wherein, The back-blowing assembly comprises a heating component, the heating component comprises a heating shell and a heating wire, the heating shell has a heating cavity therein and is connected between the outlet of the air compressor and the air passage pipe, and the heating wire is arranged in the heating cavity.

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