CN113587085B - Boiler ash taking and returning circulation system - Google Patents

Boiler ash taking and returning circulation system Download PDF

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Publication number
CN113587085B
CN113587085B CN202110800016.0A CN202110800016A CN113587085B CN 113587085 B CN113587085 B CN 113587085B CN 202110800016 A CN202110800016 A CN 202110800016A CN 113587085 B CN113587085 B CN 113587085B
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China
Prior art keywords
ash
flue
boiler
taking
door
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CN113587085A (en
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孙乐天
卜金星
许春刚
任俊纯
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Ningbo Jiufeng Thermal Power Co ltd
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Ningbo Jiufeng Thermal Power Co ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00Fluidised bed combustion apparatus
    • F23C10/02Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
    • F23C10/04Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
    • F23C10/08Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
    • F23C10/10Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00Fluidised bed combustion apparatus
    • F23C10/18Details; Accessories

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasification And Melting Of Waste (AREA)

Abstract

The utility model relates to a boiler is got grey returning charge circulation system relates to thermoelectric technology's field, it includes the boiler, cyclone, slag processing apparatus and fume treatment device, cyclone and boiler intercommunication, slag processing apparatus and fume treatment device are fixed to be linked together with cyclone respectively, be connected with the flue between cyclone and the fume treatment device, still including getting grey subassembly and protection component, get grey subassembly and include the support frame, the emergency exit, get grey portion and cylinder, support frame and flue fixed connection, the last ash mouth of having seted up of flue is got, the emergency exit will get grey mouth seal, it is connected to get one side that grey portion and emergency exit are close to the flue, the cylinder is used for driving emergency exit switching. The protection component is used for sealing the ash taking port. The automatic ash taking operation can be realized in the application using process, the steps needing manual operation are reduced, and the automatic ash taking and returning circulating system has the effect of improving the safety of the boiler in the using process.

Description

Boiler ash taking and returning circulation system
Technical Field
The application relates to the field of thermoelectric technology, in particular to a boiler ash taking and returning circulating system.
Background
The circulating fluidized bed combustion technology is a new generation high-efficiency low-pollution clean coal burning technology which is rapidly developed in the last two decades, is also a stage for rapid development and growth in China at present, and is one of the preferred technologies of a plurality of thermoelectric manufacturers. With the enlargement of the circulating fluidized bed boiler and the rapid development of the circulating fluidized bed boiler in the aspect of power generation technology, the ash discharge amount of the circulating fluidized bed boiler is greatly increased. The ash slag treatment method in the related art comprises the following steps: the fly ash flue gas is discharged from the hearth, subjected to multiple heat exchange, then reaches the desulfurizing tower for spray desulfurization, and the sediment waste liquid after desulfurization is preheated to water in the boiler, so that the utilization rate of the heat of the fly ash in the whole process is improved.
Because circulating fluidized bed is a comparatively complicated combustion system, adopts the cyclone to separate the slag in the flue gas generally at present, and the flue gas is discharged and enters into the desulfurization process, and the slag enters into the returning charge ware, in cyclone long-term work in-process, generally can get the ash to the flue gas and detect, but because get ash in-process temperature high, when the staff holds the ash instrument of getting, very easily causes the injury to the staff.
At present, related technology discloses a boiler ash taking and returning circulation system as in application number 202010259019.3, wherein the boiler is provided with a cyclone separator, a slag treatment device and a flue gas treatment device, a flue is connected between the cyclone separator and the flue gas treatment device, the flue is communicated with an spot check part, the spot check part comprises a frame fixedly connected with the flue and a protective door arranged on the frame, and the protective door and the frame are detachably arranged; the ash collecting device is characterized in that the ash collecting part is movably mounted on the frame, a handle is arranged at one end, far away from the flue, of the ash collecting part, an inserting column is arranged on the handle in a circumferential and outer rotating mode, an inserting hole for inserting the inserting column is formed in the frame, and a clamping assembly for realizing clamping of the ash collecting part is arranged between the inserting column and the frame. The high-temperature operation time of the staff can be reduced in the working process, and the safety of the staff in the ash taking process is improved.
Aiming at the related technology, when the dust taking operation is carried out, a worker is required to hold a handle to open the protective door, and because the smoke in the flue is in a high-temperature and high-pressure state, the high-temperature gas in the flue is very easy to rush out of the frame when the worker opens the protective door, so that the worker is burnt by the high-temperature smoke. The inventor considers that the boiler ash taking and returning circulating system in the related technology has great potential safety hazard.
Disclosure of Invention
In order to improve the safety of the boiler ash taking and returning charge circulating system in the use process, the application provides the boiler ash taking and returning charge circulating system.
The application provides a boiler ash taking and returning charge circulation system adopts following technical scheme:
the utility model provides a boiler ash taking and returning charge circulation system, includes boiler, cyclone, slag processing apparatus and fume treatment device, cyclone with the boiler intercommunication, slag processing apparatus with fume treatment device respectively with cyclone fixed intercommunication, cyclone with be connected with the flue between the fume treatment device, still including getting the ash subassembly, get ash subassembly and include support frame, emergency exit, get ash portion and cylinder, the support frame with flue fixed connection, the ash mouth has been seted up on the flue, the emergency exit will get the ash mouth sealed, get ash portion with the emergency exit is close to one side of flue is connected, the cylinder is used for the drive the emergency exit switching.
By adopting the technical scheme, the fuel is combusted in the boiler, slag and smoke generated by combustion enter the cyclone separator, the cyclone separator separates the slag from the smoke, the smoke is discharged into the smoke treatment device, and the slag is discharged into the slag treatment device to be recycled; when the ash taking operation is performed, the cylinder is started, the piston rod of the cylinder drives the safety door to move towards the direction away from the flue, so that the ash taking opening is opened, and the ash taking part is driven to extend out of the ash taking opening in the moving process of the safety door; after the ash taking is completed, a piston rod of the air cylinder drives the safety door to seal the ash taking port so as to avoid leakage of smoke in the working process of the boiler; the automatic ash taking operation can be realized through the structure, the manual ash taking operation from the flue is not needed, and the safety of the boiler ash taking and returning circulating system in the use process is effectively improved.
Optionally, the device further comprises a protection assembly, wherein the protection assembly comprises a protection door and a driving piece, the protection door is in sliding connection with the flue, and the driving piece is used for opening and closing the protection door.
Through adopting above-mentioned technical scheme, get grey in-process, the driving piece drives the guard gate and slides along the flue for the guard gate can be with getting the shutoff of ash mouth, thereby reduces the problem of getting the in-process flue gas and revealing from getting the ash mouth, and the guard gate can reduce the heat in the flue and to get the problem of ash mouth outer diffusion transmission simultaneously, can avoid the further rising of temperature in the operational environment, thereby can improve a safe comfortable operational environment for the workman.
Optionally, the driving piece includes spring and slide bar, the holding tank has been seted up to the flue lateral wall, guard gate sliding connection in the holding tank, the spring is located the holding tank, the spring makes the guard gate has with get the trend of ash mouth shutoff, the slide bar with the emergency exit is connected, the slide bar orientation is kept away from the direction slope of flue upwards sets up, the slide bar with guard gate bottom butt.
Through adopting above-mentioned technical scheme, when getting the ash operation, the emergency exit drives and gets the ash portion and remove towards the direction of keeping away from the flue, and it removes to get the slide bar to drive when ash portion removes, because the slide bar upwards sets up and with the butt bottom the emergency exit towards the direction of keeping away from the flue slope, so the in-process that the emergency exit was opened, the butt point of slide bar and emergency exit reduces gradually, again because the emergency exit receives the elasticity of spring, so the emergency exit is opened the in-process, the emergency exit will get the ash mouth shutoff gradually; after the ash is taken, the emergency exit removes in order to close the ash taking port towards the direction that is close to the flue, and the emergency exit removes the in-process and drives the slide bar and remove, will protect the door jack-up when the slide bar removes to can not influence and get grey portion to remove in the flue, above-mentioned structure can realize the operation of automatically closing and opening of emergency exit, has further reduced the manual operation step of need in the ash taking process, thereby improves the security of boiler in the ash taking returning charge circulation system use.
Optionally, a sealing plate is fixedly connected with one end of the sliding rod, which is far away from the safety door.
Through adopting above-mentioned technical scheme, after the emergency exit drives and gets the ash portion and remove to getting the ash mouth outside, still there is a silk gap between the guard gate bottom and the ash mouth of getting, and the closing plate of being connected with the slide bar can be sealed the gap this moment, has further reduced the problem of getting the ash in-process flue gas leakage, has improved the security that the boiler got ash returning charge circulation system in the use.
Optionally, the ash taking part comprises an ash taking pipe and an ash taking bucket, the ash taking pipe is fixedly connected with one end of the safety door, which is close to the flue, two ash taking buckets are arranged, the two ash taking buckets are respectively fixedly connected with one end of the ash taking pipe, and the diameter of the ash taking bucket, which is far away from the ash taking pipe, is gradually reduced.
Through adopting above-mentioned technical scheme, set up two ash bucket in being convenient for flue gas gets into the ash pipe, ash bucket diameter reduces gradually, is favorable to adsorbing the ash material in the flue gas on ash bucket inner wall to can improve the ash efficiency of getting of ash subassembly.
Optionally, the collecting assembly is located at the bottom of the supporting frame and comprises a supporting seat and a collecting box, the supporting seat is fixedly connected with the supporting frame, and the collecting box is slidably connected with the supporting seat.
Through adopting above-mentioned technical scheme, the emergency exit drives and gets the ash portion and remove outside getting the ash mouth, and the workman strikes and gets ash pipe and get ash bucket, gets the flue gas flying ash in ash pipe and the ash bucket and drops in the box that gathers materials, then the workman will gather materials in the box follow supporting seat and take out, can detect the work to the flue gas.
Optionally, a circulating water cooling pipe is arranged in the supporting seat.
Through adopting above-mentioned technical scheme, circulating water cooling pipe can cool off the high temperature flying ash that just goes out of stove to reduce the problem of scalding the staff easily.
Optionally, a vibration motor is arranged on the support frame.
Through adopting above-mentioned technical scheme, the emergency exit drives and gets the ash portion and remove outside getting the ash mouth, starts vibrating motor and drives the support frame vibration, and then drives and get material portion vibration to the realization is trembled the fly ash of getting material portion collection and falls the process in the box that gathers materials, further strengthens the automation mechanized operation of getting the material process.
Optionally, a sealing strip is arranged on the safety door, and a sealing groove for clamping the sealing strip is formed in the edge of the ash taking opening of the flue.
Through adopting above-mentioned technical scheme, when the emergency exit was closed, the sealing strip joint will get grey mouthful sealed tight in the seal groove, further reduces the problem that the flue gas revealed.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the utility model provides a boiler gets grey returning charge circulation system is equipped with gets grey subassembly, gets grey subassembly and includes the emergency exit, gets grey portion and cylinder, and when getting grey operation, the cylinder drives the emergency exit and removes, and the emergency exit drives and gets grey portion and remove along getting grey mouthful and get grey operation to can realize automatic grey operation of getting, need not the workman and get grey from the flue manually, effectively improved the security in the boiler and got grey returning charge circulation system use;
2. the utility model provides a boiler gets grey returning charge circulation system is equipped with protection component, protection component includes guard gate and driving piece, gets grey in-process, and driving piece drives the guard gate and slides along the flue for the guard gate can be with getting grey mouthful shutoff, thereby reduces the problem that gets grey in-process flue gas and reveal from getting grey mouthful, and the guard gate can reduce the problem that heat in the flue was to getting grey mouthful outer diffusion transmission simultaneously, can avoid the further rising of temperature in the operational environment, thereby can improve a safe comfortable operational environment for the workman;
3. the application provides a boiler gets grey returning charge circulation system's driving piece includes slide bar and spring, and the driving piece that so set up can realize the operation of automatically closing and opening of guard gate, has further reduced the manual operation step of needs in getting grey in-process to improve the security of boiler in getting grey returning charge circulation system use.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic view of the structure of the ash handling assembly, the guard assembly and the collection assembly of the embodiments of this application;
FIG. 4 is a partial cross-sectional view of an ash handling assembly of an embodiment of this application.
Reference numerals: 1. a boiler; 2. a cyclone separator; 3. a slag treatment device; 4. a flue; 41. an ash taking port; 411. a receiving groove; 42. sealing grooves; 5. a flue gas treatment device; 6. an ash taking component; 61. a support frame; 611. a reinforcing rod; 612. a mounting plate; 613. a vibration motor; 62. a cylinder; 63. a safety door; 631. a sealing strip; 64. taking an ash part; 641. an ash taking pipe; 642. an ash taking bucket; 7. a protective assembly; 71. a protective door; 72. a driving member; 721. a spring; 722. a slide bar; 7221. a connecting rod; 7222. a sealing plate; 8. a collection assembly; 81. a support base; 811. a circulating water cooling pipe; 82. and a collecting box.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-4.
The embodiment of the application discloses a boiler ash taking and returning circulating system. Referring to fig. 1, 2 and 3, a boiler 1 ash taking and returning circulation system comprises a boiler 1, a cyclone separator 2, a slag treatment device 3, a flue 4, a flue gas treatment device 5, an ash taking assembly 6, a protection assembly 7 and a collecting assembly 8.
Referring to fig. 1, a cyclone separator 2 is fixedly communicated with a side wall of a boiler 1 through a pipeline, the cyclone separator 2 is a device for separating flue gas and slag in the related art, a slag treatment device 3 is fixedly communicated with the cyclone separator 2 and a slag outlet through a pipeline, the slag treatment device 3 is a returning device in the related art, one end of the slag treatment device 3, which is far away from the cyclone separator 2, is fixedly communicated with the inside of the boiler 1, one end of a flue 4 is fixedly communicated with an exhaust port of the cyclone separator 2, the other end of the flue 4 is fixedly communicated with a flue gas treatment device 5, the flue 4 is a rectangular pipeline, and the flue gas treatment device 5 is a device for desulfurizing flue gas in the related art.
Referring to fig. 2, 3 and 4, the ash taking assembly 6 includes a support frame 61, an air cylinder 62, a safety door 63 and an ash taking part 64, the support frame 61 is rectangular frame-shaped, the support frame 61 is welded with the flue 4, a reinforcing rod 611 for keeping the support frame 61 stable is welded on the support frame 61, and one end of the reinforcing rod 611 far from the support frame 61 is welded with the flue 4.
Referring to fig. 2, 3 and 4, the cylinder body of the cylinder 62 is fixedly connected with the support frame 61 by adopting screws, the safety door 63 is welded with a piston rod of the cylinder 62, the ash taking port 41 is formed in the side wall of the flue 4, a circle of sealing groove 42 is formed in the edge of the ash taking port 41, a circle of sealing strip 631 is integrally formed in the edge of the side wall of the safety door 63 close to the flue 4, and when the safety door is in normal operation, the safety door 63 is driven by the cylinder 62 to seal the ash taking port 41, and at the moment, the sealing strip 631 is clamped in the sealing groove 42 to enhance the sealing performance of the safety door 63 on the ash taking port 41.
Referring to fig. 3 and 4, ash taking part 64 includes ash taking tube 641 and ash taking hopper 642, and the side wall of side of ash taking tube 641 and safety door 63 near flue 4 is welded, and the axis of ash taking tube 641 is vertical to be set up, and ash taking hopper 642 is equipped with two, and two ash taking hoppers 642 are respectively with the coaxial welding of one end of ash taking tube 641, and the diameter of ash taking hopper 642 towards the direction of keeping away from ash taking tube 641 gradually reduces. The support frame 61 is welded with a mounting plate 612, the mounting plate 612 is fixedly connected with a vibrating motor 613 by adopting screws, and the vibrating motor 613 is used for separating fly ash collected by the material taking part from the ash taking pipe 641 and the material taking hopper.
Referring to fig. 3 and 4, the protection component 7 includes the protection door 71 and the driving piece 72, the holding tank 411 has been seted up at the roof of getting the ash mouth 41 to the flue 4, the protection door 71 sliding connection is in holding tank 411, the driving piece 72 includes spring 721 and slide bar 722, spring 721 is located holding tank 411, spring 721 one end and holding tank 411 diapire welding, the other end and protection door 71 roof welding, spring 721 makes the protection door 71 have the trend of getting the ash mouth 41 to close, slide bar 722 is equipped with two, two slide bars 722 distribute in the both sides of safety door 63 along the direction of movement, slide bar 722 one end and safety door 63 welding, the other end welding has connecting rod 7221, connecting rod 7221 is kept away from the one end and the safety door 63 welding of slide bar 722, connecting rod 7221 is used for making slide bar 722 keep stable, connecting rod 7221 level sets up, slide bar 722 is upwards set up towards the direction slope of keeping away from the flue 4, the bottom wall setting as the inclined plane of protection door 71, slide bar 722 upper surface all the time with the inclined plane butt of the bottom wall of protection door 71. The end of the slide bar 722 remote from the safety door 63 is welded with a sealing plate 7222.
Referring to fig. 3 and 4, during the ash taking operation, the sliding rod 722 can realize the automatic closing and opening operation of the protective door 71 along with the moving process of the safety door 63, so that the manual operation steps in the ash taking process are reduced, and the safety of the boiler ash taking and returning circulating system in the using process is improved.
Referring to fig. 3 and 4, the collecting assembly 8 is located at the bottom of the supporting frame 61, the collecting assembly 8 comprises a supporting seat 81 and a collecting box 82, the collecting box 82 is arranged in the supporting seat 81 in a drawer type sliding connection manner, a circulating water cooling pipe 811 is embedded in the side wall of the supporting seat 81, and the circulating water cooling pipe 811 can cool the high-temperature fly ash just discharged from the furnace; when the safety door 63 is opened, the take-out portion is located just above the magazine 82.
The implementation principle of the ash taking and returning circulating system of the boiler provided by the embodiment of the application is as follows: during operation, fuel is combusted in the boiler 1, slag and flue gas generated by combustion enter the cyclone separator 2, the cyclone separator 2 separates the slag and the flue gas, the flue gas is discharged into the flue gas treatment device 5, and the slag is discharged into the slag treatment device 3 to be recycled; in the combustion process, the flue gas enters the ash taking pipe 641 through the ash taking hopper 642, and fly ash in the flue gas is adhered to the inner walls of the ash taking pipe 641 and the ash taking hopper 642.
When the flue gas is subjected to ash taking detection, the starting cylinder 62 drives the safety door 63 to slide towards the direction away from the flue 4, the safety door 63 drives the ash taking part 64 to move to the position right above the material collecting box 82 when in sliding, the safety door 63 moves, the sliding rod 722 is moved in the process of moving, the abutting point of the sliding rod 722 and the protective door 71 is gradually lowered, and the protective door 71 is subjected to the elasticity of the spring 721, so that the ash taking port 41 is blocked in the process of opening the safety door 63, and the gap at the bottom of the protective door 71 is further blocked by the sealing plate 7222 connected with the sliding rod 722, so that the problem of flue gas leakage in the ash taking process is reduced.
After the ash taking part 64 moves out of the ash taking port 41, a vibration motor 613 is started, the vibration motor 613 drives a supporting frame 61 to vibrate, and then the material taking part is driven to vibrate, so that flue gas fly ash collected in the material taking part is shaken off into the material collecting box 82, then a circulating water cooling pipe 811 in the supporting seat 81 cools the material collecting box 82, further the fly ash in the material collecting box 82 is rapidly cooled, then a worker withdraws the material collecting box 82 from the supporting seat 81, and the flue gas can be detected.
After the ash taking operation is completed, the air cylinder 62 drives the safety door 63 to move towards the direction close to the flue 4, so that the ash taking port 41 is blocked, and the sealing strip 631 of the safety door 63 is clamped in the sealing groove 42 of the flue 4, so that the tightness of the ash taking port 41 is further enhanced; the safety door 63 drives the sliding rod 722 to move in the moving process, and the protective door 71 is jacked up when the sliding rod 722 moves, so that the ash taking part 64 cannot be influenced to move into the flue 4.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (6)

1. The utility model provides a boiler ash taking and returning charge circulation system, includes boiler (1), cyclone (2), slag processing apparatus (3) and flue gas processing apparatus (5), cyclone (2) with boiler (1) intercommunication, slag processing apparatus (3) with flue gas processing apparatus (5) respectively with cyclone (2) fixed intercommunication, cyclone (2) with be connected with flue (4) between flue gas processing apparatus (5), its characterized in that: the ash collecting device comprises a flue (4) and an ash collecting assembly (6), wherein the ash collecting assembly (6) comprises a supporting frame (61), a safety door (63), an ash collecting part (64) and an air cylinder (62), the supporting frame (61) is fixedly connected with the flue (4), an ash collecting opening (41) is formed in the flue (4), the safety door (63) seals the ash collecting opening (41), the ash collecting part (64) is connected with one side, close to the flue (4), of the safety door (63), and the air cylinder (62) is used for driving the safety door (63) to be opened and closed;
the air conditioner further comprises a protection assembly (7), wherein the protection assembly (7) comprises a protection door (71) and a driving piece (72), the protection door (71) is in sliding connection with the flue (4), and the driving piece (72) is used for opening and closing the protection door (71);
the driving piece (72) comprises a spring (721) and a slide bar (722), a containing groove (411) is formed in the side wall of the flue (4), the protective door (71) is connected in the containing groove (411) in a sliding mode, the spring (721) is located in the containing groove (411), the spring (721) enables the protective door (71) to have a trend of blocking the ash taking opening (41), the slide bar (722) is connected with the safety door (63), the slide bar (722) is obliquely upwards arranged towards a direction away from the flue (4), and the slide bar (722) is abutted to the bottom of the protective door (71);
and one end of the sliding rod (722) far away from the safety door (63) is fixedly connected with a sealing plate (7222).
2. The boiler ash removal and return circulation system according to claim 1, wherein: the ash taking part (64) comprises an ash taking pipe (641) and an ash taking hopper (642), the ash taking pipe (641) is fixedly connected with one end of the safety door (63) close to the flue (4), the ash taking hopper (642) is provided with two ash taking hoppers (642) which are respectively fixedly connected with one end of the ash taking pipe (641), and the diameter of the ash taking hopper (642) gradually decreases towards the direction away from the ash taking pipe (641).
3. The boiler ash removal and return circulation system according to claim 1, wherein: still include collection subassembly (8), collection subassembly (8) are located support frame (61) bottom, collection subassembly (8) are including supporting seat (81) and box (82) that gathers materials, supporting seat (81) with support frame (61) fixed connection, box (82) that gathers materials with supporting seat (81) sliding connection.
4. A boiler ash removal and return circulation system according to claim 3, characterized in that: a circulating water cooling pipe (811) is arranged in the supporting seat (81).
5. The boiler ash removal and return circulation system according to claim 1, wherein: the support frame (61) is provided with a vibrating motor (613).
6. The boiler ash removal and return circulation system according to claim 1, wherein: the safety door (63) is provided with a sealing strip (631), and the edge of the ash taking port (41) of the flue (4) is provided with a sealing groove (42) for clamping the sealing strip (631).
CN202110800016.0A 2021-07-15 2021-07-15 Boiler ash taking and returning circulation system Active CN113587085B (en)

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Publication number Priority date Publication date Assignee Title
CN113566191B (en) * 2021-07-15 2024-03-12 宁波久丰热电有限公司 Coal outlet device of circulating fluidized bed boiler
CN113587081B (en) * 2021-07-15 2024-02-09 宁波久丰热电有限公司 Combustion system of coal-fired boiler

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