CFB (circulating fluidized bed) boiler deslagging device for burning coal gangue

Abstract

The invention discloses a CFB boiler deslagging device for burning coal gangue, and belongs to the technical field of boiler deslagging, the CFB boiler deslagging device comprises a limiting supporting cylinder, a discharging mechanism is arranged above the limiting supporting cylinder, and a plurality of limiting supporting rods for supporting the discharging mechanism are arranged on the upper surface of the limiting supporting cylinder; one end of the limiting supporting rod is fixedly connected with the limiting supporting cylinder, the other end of the limiting supporting rod is fixedly connected with the discharging mechanism, a deslagging mechanism corresponding to the limiting supporting cylinder is arranged at the bottom of the discharging mechanism, the deslagging mechanism is in sliding connection with the discharging mechanism, and the deslagging mechanism is in sliding connection with the limiting supporting cylinder; multiple cleaning is conducted on the inner wall of the hollow slag discharging pipe through mutual cooperation of multiple structures, slag is prevented from being retained on the inner wall of the hollow slag discharging pipe, the situation that normal slag discharging of the hollow slag discharging pipe is affected by continuous accumulation of the slag is prevented, and then the hollow slag discharging pipe has a warning function and can be suitable for boilers of different models.

Description

Technical Field

[0001] This invention belongs to the field of boiler ash removal technology, specifically relating to a CFB boiler ash removal device that burns coal gangue. Background Technology

[0002] Biomass circulating fluidized bed boilers, abbreviated as CFB boilers, have gradually attracted attention from various countries due to their unique advantages in three aspects: alternative fuels, waste treatment, and environmental protection, which are unmatched by other combustion technologies. CFB boilers are used with corresponding ash removal devices. Traditional ash removal devices include a boiler, ash removal pipe, water inlet pipe, water outlet pipe, motor, support platform, outlet pipe, ash removal port, first water cooling pipe, second water cooling pipe, third water cooling pipe, limiting plate, and gears. The advantage of this ash removal device is that it can remove ash from the filter. However, traditional slag removal devices have a relatively simple structure, which makes it easy for slag to accumulate on the inner wall of the slag removal pipe. The continuous accumulation of slag will affect the normal slag removal of the slag removal pipe, requiring users to maintain the slag removal device frequently, and there is an urgent need for improvement. Summary of the Invention

[0003] The purpose of this invention is to provide a ash removal device for a CFB boiler that burns coal gangue, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a ash removal device for a CFB boiler burning coal gangue, comprising a limiting support cylinder, a feeding mechanism being provided above the limiting support cylinder, a plurality of limiting support rods being provided on the upper surface of the limiting support cylinder for supporting the feeding mechanism, one end of the limiting support rod being fixedly connected to the limiting support cylinder, and the other end of the limiting support rod being fixedly connected to the feeding mechanism, and an ash removal mechanism corresponding to the limiting support cylinder being provided at the bottom of the feeding mechanism, the ash removal mechanism being slidably connected to the feeding mechanism, and the ash removal mechanism being slidably connected to the limiting support cylinder.

[0005] As a further aspect of the present invention: the feeding mechanism includes a support box, a movable guide cover is slidably connected to the bottom of the support box, and a plurality of second height adjusting members are provided at both ends of the support box for adjusting the height of the movable guide cover. The second height adjusting members are fixedly connected to the support box and the movable guide cover.

[0006] As a further embodiment of the present invention: the top of the movable guide cover is provided with a plurality of first crushing blades at intervals, the first crushing blades being fixedly connected to the movable guide cover; the bottom of the movable guide cover is provided with a plurality of second crushing blades at intervals, the second crushing blades being fixedly connected to the movable guide cover.

[0007] As a further embodiment of the present invention: a sealing plate is provided on the top of the support box, and a feed pipe is provided in the middle of the upper surface of the sealing plate. The feed pipe passes through the sealing plate and is fixedly connected to the sealing plate.

[0008] As a further embodiment of the present invention: the slag discharge mechanism includes a hollow slag discharge pipe, which is sealed and slidably connected to the support box, sealed and slidably connected to the movable guide cover, and sealed and slidably connected to the limiting support cylinder. A plurality of first height adjustment components are provided on the outer side of the hollow slag discharge pipe. The first height adjustment components are fixedly connected to the limiting support cylinder. A first limiting plate fixedly connected to the hollow slag discharge pipe is provided above the first height adjustment components. An elastic support component corresponding to the first limiting plate is provided at the top of the hollow slag discharge pipe.

[0009] As a further embodiment of the present invention: the top of the first height adjusting member is fixedly connected to a second limiting plate that is slidably connected to the first limiting plate; a ceramic protective tube is sleeved on the outer wall of the hollow slag discharge pipe, and the ceramic protective tube is fixedly connected to the hollow slag discharge pipe; a plurality of limiting brake plates are provided on the inner wall of the limiting support cylinder for braking the hollow slag discharge pipe, and the limiting brake plates are fixedly connected to the limiting support cylinder.

[0010] As a further embodiment of the present invention: the hollow slag discharge pipe is provided with a number of annular transmission components at intervals inside, the annular transmission components are fixedly connected to the hollow slag discharge pipe, a number of annular support plates are fixedly connected to the inner wall of the hollow slag discharge pipe, annular striking components are provided below the annular support plates to cooperate with the annular transmission components to vibrate the hollow slag discharge pipe, and a number of elastic connecting components are provided on the lower surface of the annular support plates to vibrate the annular striking components.

[0011] As a further embodiment of the present invention: a plurality of warning tubes for warning purposes are provided above the limiting support cylinder, and the plurality of warning tubes are spaced apart on the top of the limiting support rod, and the warning tubes are fixedly connected to the limiting support rod.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a simple structure and is easy to use. During use, the inner wall of the hollow slag discharge pipe is cleaned multiple times through the cooperation of multiple structures, which prevents slag from accumulating on the inner wall of the hollow slag discharge pipe and prevents the continuous accumulation of slag from affecting the normal slag discharge of the hollow slag discharge pipe. Secondly, the present invention has a warning function, and the present invention can be applied to different types of boilers, making the application range of the slag discharge device wider, which is worth promoting and using. Attached Figure Description

[0013] Figure 1 A schematic diagram of the ash removal device for a CFB boiler that burns coal gangue. Figure 2This is a schematic diagram of the ash removal mechanism in a CFB boiler ash removal device that burns coal gangue. Figure 3 This is a schematic diagram of the structure of a ring transmission component in a CFB boiler ash discharge device that burns coal gangue. Figure 4 This is a schematic diagram of the feeding mechanism in a CFB boiler ash discharge device that burns coal gangue. In the diagram: 1-Limit brake plate, 2-Limit support cylinder, 3-Slag discharge mechanism, 4-Limit support rod, 5-Warning tube, 6-Feeding mechanism, 30-First height adjustment component, 31-Elastic support component, 32-First limit plate, 33-Elastic connector, 34-Ceramic protective tube, 35-Hollow slag discharge pipe, 36-Annular support plate, 37-Annular striking component, 38-Annular transmission component, 39-Second limit plate, 60-Second height adjustment component, 61-Support box, 62-Movable guide cover, 63-Sealing plate, 64-Feeding pipe, 65-First crushing blade, 66-Second crushing blade. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms “installation,” “connection,” “linking,” and “setting” should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting.

[0016] Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0017] Example 1: Please refer to Figure 1This embodiment provides a ash removal device for a CFB boiler burning coal gangue, including a limiting support cylinder 2. A feeding mechanism 6 is provided above the limiting support cylinder 2. Several limiting support rods 4 are provided on the upper surface of the limiting support cylinder 2 to support the feeding mechanism 6. One end of the limiting support rod 4 is fixedly connected to the limiting support cylinder 2, and the other end of the limiting support rod 4 is fixedly connected to the feeding mechanism 6. A ash removal mechanism 3 corresponding to the limiting support cylinder 2 is provided at the bottom of the feeding mechanism 6. The ash removal mechanism 3 is slidably connected to the feeding mechanism 6 and the limiting support cylinder 2. Several warning tubes 5, which are LED tubes, are provided above the limiting support cylinder 2. Several warning tubes 5 are spaced apart on the top of the limiting support rods 4 and are fixedly connected to the limiting support rods 4.

[0018] Please see Figure 1 and Figure 4 To make the feeding mechanism 6 more reliable, in this embodiment, preferably, the feeding mechanism 6 includes a support box 61, a movable guide cover 62 slidably connected to the bottom of the support box 61, and several second height adjusting members 60 for adjusting the height of the movable guide cover 62 at both ends of the support box 61. The second height adjusting members 60 are hydraulic cylinders and are fixedly connected to the support box 61 and the movable guide cover 62. Several first crushing blades 65 are spaced apart on the top of the movable guide cover 62 and are fixedly connected to the movable guide cover 62. Several second crushing blades 66 are spaced apart on the bottom of the movable guide cover 62 and are fixedly connected to the movable guide cover 62. A sealing plate 63 is provided on the top of the support box 61, and a feed pipe 64 is provided in the middle of the upper surface of the sealing plate 63. The feed pipe 64 passes through the sealing plate 63 and is fixedly connected to the sealing plate 63.

[0019] Please see Figure 1 , Figure 2 and Figure 3 To make the use of the slag discharge mechanism 3 more reliable, in this embodiment, preferably, the slag discharge mechanism 3 includes a hollow slag discharge pipe 35, which is sealed and slidably connected to the support box 61, the hollow slag discharge pipe 35 is sealed and slidably connected to the movable guide cover 62, and the hollow slag discharge pipe 35 is sealed and slidably connected to the limiting support cylinder 2. Several first height adjustment components 30 are provided on the outside of the hollow slag discharge pipe 35. The first height adjustment components 30 are hydraulic cylinders. The first height adjustment components 30 are fixedly connected to the limiting support cylinder 2. A first limiting plate 32 is provided above the first height adjustment components 30 and is fixedly connected to the hollow slag discharge pipe 35. An elastic support component 31 corresponding to the first limiting plate 32 is provided on the top of the hollow slag discharge pipe 35. The elastic support component 31 is a spring. Please see Figure 2 and Figure 3 To enrich the functions of the slag discharge mechanism 3, in this embodiment, preferably, the top of the first height adjustment member 30 is fixedly connected to a second limiting plate 39 that is slidably connected to the first limiting plate 32; a ceramic protective tube 34 is sleeved on the outer wall of the hollow slag discharge pipe 35, and the ceramic protective tube 34 is fixedly connected to the hollow slag discharge pipe 35; a plurality of limiting brake plates 1 are provided on the inner wall of the limiting support cylinder 2 for braking the hollow slag discharge pipe 35, and the limiting brake plates 1 are fixedly connected to the limiting support cylinder 2. The inner wall of the tube 35 is provided with several annular transmission components 38, which are fixedly connected to the hollow slag discharge tube 35. Several annular support plates 36 are fixedly connected to the inner wall of the hollow slag discharge tube 35. Below the annular support plates 36, there are annular striking components 37 that cooperate with the annular transmission components 38 to vibrate the hollow slag discharge tube 35. The lower surface of the annular support plates 36 is provided with several elastic connecting components 33 that vibrate the annular striking components 37. The elastic connecting components 33 are springs.

[0020] Example 2: Please refer to Figure 1 This embodiment provides a ash removal device for a CFB boiler burning coal gangue, including a limiting support cylinder 2. A feeding mechanism 6 is provided above the limiting support cylinder 2. Several limiting support rods 4 are provided on the upper surface of the limiting support cylinder 2 to support the feeding mechanism 6. One end of the limiting support rod 4 is fixedly connected to the limiting support cylinder 2, and the other end of the limiting support rod 4 is fixedly connected to the feeding mechanism 6. A ash removal mechanism 3 corresponding to the limiting support cylinder 2 is provided at the bottom of the feeding mechanism 6. The ash removal mechanism 3 is slidably connected to the feeding mechanism 6 and the limiting support cylinder 2. Several warning tubes 5 for warning purposes are provided above the limiting support cylinder 2. The warning tubes 5 are reflective tubes. Several warning tubes 5 are spaced apart on the top of the limiting support rods 4 and are fixedly connected to the limiting support rods 4.

[0021] Please see Figure 1 and Figure 4To make the feeding mechanism 6 more reliable, in this embodiment, preferably, the feeding mechanism 6 includes a support box 61, a movable guide cover 62 slidably connected to the bottom of the support box 61, and several second height adjusting members 60 for adjusting the height of the movable guide cover 62 at both ends of the support box 61. The second height adjusting members 60 are cylinders and are fixedly connected to the support box 61 and the movable guide cover 62. Several first crushing blades 65 are spaced apart on the top of the movable guide cover 62 and are fixedly connected to the movable guide cover 62. Several second crushing blades 66 are spaced apart on the bottom of the movable guide cover 62 and are fixedly connected to the movable guide cover 62. A sealing plate 63 is provided on the top of the support box 61, and a feed pipe 64 is provided in the middle of the upper surface of the sealing plate 63. The feed pipe 64 passes through the sealing plate 63 and is fixedly connected to the sealing plate 63.

[0022] Please see Figure 1 , Figure 2 and Figure 3 To make the use of the slag discharge mechanism 3 more reliable, in this embodiment, preferably, the slag discharge mechanism 3 includes a hollow slag discharge pipe 35, which is sealed and slidably connected to the support box 61, the hollow slag discharge pipe 35 is sealed and slidably connected to the movable guide cover 62, and the hollow slag discharge pipe 35 is sealed and slidably connected to the limiting support cylinder 2. Several first height adjustment components 30 are provided on the outside of the hollow slag discharge pipe 35. The first height adjustment component 30 is a cylinder. The first height adjustment component 30 is fixedly connected to the limiting support cylinder 2. A first limiting plate 32 is provided above the first height adjustment component 30 and is fixedly connected to the hollow slag discharge pipe 35. An elastic support component 31 corresponding to the first limiting plate 32 is provided on the top of the hollow slag discharge pipe 35. The elastic support component 31 is a metal spring sheet. Please see Figure 2 and Figure 3To enrich the functions of the slag discharge mechanism 3, in this embodiment, preferably, the top of the first height adjustment member 30 is fixedly connected to a second limiting plate 39 that is slidably connected to the first limiting plate 32; a ceramic protective tube 34 is sleeved on the outer wall of the hollow slag discharge pipe 35, and the ceramic protective tube 34 is fixedly connected to the hollow slag discharge pipe 35; a plurality of limiting brake plates 1 are provided on the inner wall of the limiting support cylinder 2 for braking the hollow slag discharge pipe 35; the limiting brake plates 1 are fixedly connected to the limiting support cylinder 2; the hollow slag discharge pipe... The hollow slag discharge pipe 35 is internally spaced with several annular transmission components 38, which are fixedly connected to the hollow slag discharge pipe 35. Several annular support plates 36 are fixedly connected to the inner wall of the hollow slag discharge pipe 35. Below the annular support plates 36, there are annular striking components 37 that cooperate with the annular transmission components 38 to vibrate the hollow slag discharge pipe 35. The lower surface of the annular support plates 36 is provided with several elastic connecting components 33 that vibrate the annular striking components 37. The elastic connecting components 33 are metal springs.

[0023] The working principle and usage process of this invention: During use, slag is discharged through the hollow slag discharge pipe 35. During the slag discharge process, the first height adjustment component 30 is continuously extended and contracted, thereby causing the hollow slag discharge pipe 35 to move vertically back and forth. The vertical back and forth movement of the hollow slag discharge pipe 35 improves the slag falling effect and prevents slag from accumulating on the inner wall of the hollow slag discharge pipe 35. Secondly, when the hollow slag discharge pipe 35 moves vertically back and forth, it will intermittently collide with the limit brake plate 1, thereby generating vibration. At the same time, the vertical back and forth movement of the hollow slag discharge pipe 35 causes the annular striking component 37 to intermittently strike the annular transmission component 38. The striking further vibrates the hollow slag discharge pipe 35, and the vibration of the hollow slag discharge pipe 35 further prevents slag from accumulating. Secondly, during the slag discharge process, the second height adjustment component 60 is continuously extended and retracted. At this time, the movable guide cover 62 moves vertically back and forth. The slag is initially crushed by the first crushing blade 65, and then the slag is further crushed by the second crushing blade 66, thereby achieving multiple crushing of the slag and avoiding blockage of the slag discharge device during use. This invention achieves multiple cleanings of the inner wall of the hollow slag discharge pipe 35 through the cooperation of multiple structures, preventing slag from accumulating on the inner wall of the hollow slag discharge pipe 35 and preventing the continuous accumulation of slag from affecting the normal slag discharge of the hollow slag discharge pipe 35. Secondly, the invention has a warning function and can be applied to different types of boilers, making the application range of the slag discharge device wider. In addition, the invention has a simple structure and is easy to use, making it worthy of promotion and use.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A ash discharge device for a CFB boiler burning coal gangue, comprising a limiting support cylinder, characterized in that: A feeding mechanism is provided above the limiting support cylinder. Several limiting support rods are provided on the upper surface of the limiting support cylinder to support the feeding mechanism. One end of the limiting support rod is fixedly connected to the limiting support cylinder, and the other end of the limiting support rod is fixedly connected to the feeding mechanism. A slag discharge mechanism corresponding to the limiting support cylinder is provided at the bottom of the feeding mechanism. The slag discharge mechanism is slidably connected to the feeding mechanism and to the limiting support cylinder.

2. The ash removal device for a CFB boiler burning coal gangue according to claim 1, characterized in that: The feeding mechanism includes a support box, a movable guide cover is slidably connected to the bottom of the support box, and several second height adjustment components are provided at both ends of the support box for adjusting the height of the movable guide cover. The second height adjustment components are fixedly connected to the support box and the movable guide cover.

3. The ash removal device for a CFB boiler burning coal gangue according to claim 2, characterized in that: The top of the movable guide cover is provided with a plurality of first crushing blades at intervals, and the first crushing blades are fixedly connected to the movable guide cover. The bottom of the movable guide cover is provided with a plurality of second crushing blades at intervals, and the second crushing blades are fixedly connected to the movable guide cover.

4. The ash removal device for a CFB boiler burning coal gangue according to claim 3, characterized in that: The top of the support box is provided with a sealing plate, and a feed pipe is provided in the middle of the upper surface of the sealing plate. The feed pipe passes through the sealing plate and is fixedly connected to the sealing plate.

5. The ash removal device for a CFB boiler burning coal gangue according to claim 4, characterized in that: The slag discharge mechanism includes a hollow slag discharge pipe, which is sealed and slidably connected to the support box, the movable guide cover, and the limiting support cylinder. Several first height adjustment components are provided on the outside of the hollow slag discharge pipe, and the first height adjustment components are fixedly connected to the limiting support cylinder. A first limiting plate is provided above the first height adjustment components and fixedly connected to the hollow slag discharge pipe. An elastic support component corresponding to the first limiting plate is provided at the top of the hollow slag discharge pipe.

6. The ash removal device for a CFB boiler burning coal gangue according to claim 5, characterized in that: The top of the first height adjustment component is fixedly connected to a second limiting plate that is slidably connected to the first limiting plate. A ceramic protective tube is sleeved on the outer wall of the hollow slag discharge pipe. The ceramic protective tube is fixedly connected to the hollow slag discharge pipe. Several limiting brake plates are provided on the inner wall of the limiting support cylinder to brake the hollow slag discharge pipe. The limiting brake plates are fixedly connected to the limiting support cylinder.

7. The ash removal device for a CFB boiler burning coal gangue according to claim 6, characterized in that: The hollow slag discharge pipe is internally equipped with several annular transmission components, which are fixedly connected to the hollow slag discharge pipe. Several annular support plates are fixedly connected to the inner wall of the hollow slag discharge pipe. Below the annular support plates are annular striking components that cooperate with the annular transmission components to vibrate the hollow slag discharge pipe. The lower surface of the annular support plates is equipped with several elastic connecting components that vibrate the annular striking components.

8. The ash removal device for a CFB boiler burning coal gangue according to any one of claims 1-7, characterized in that: Several warning tubes are provided above the limiting support cylinder for warning purposes. The warning tubes are spaced apart on the top of the limiting support rod and are fixedly connected to the limiting support rod.

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