A kind of anti-clogging device for boiler convection bank ash bucket

Abstract

The utility model provides a kind of for boiler convection tube bundle ash bucket's anti-ash blocking device, belong to boiler anti-blocking technical field.The for boiler convection tube bundle ash bucket's anti-ash blocking device, including support frame, support frame is equipped with boiler main body, boiler main body bottom is communicated with ash pipe, drive assembly is set in ash pipe, pump gas pressurizing component is set in boiler main body, pump gas pressurizing component is communicated with jet cleaning component, jet cleaning component is communicated with drive assembly, pump gas pressurizing component bottom is communicated with impact component.In the present application, for boiler convection tube bundle ash bucket's anti-ash blocking device is convenient to carry out all-around cleaning to ash pipe inner wall, while it is convenient to impact to scatter bridge fly ash, without manual disassembly ash pipe, and unblock can be completed, further shorten the downtime of boiler due to jam processing, guarantee ash efficiency.

Description

Technical Field

[0001] This utility model relates to the field of boiler anti-clogging, specifically to an anti-clogging ash hopper for the lower ash hopper of a boiler convection tube bundle. Background Technology

[0002] A convection tube bundle is installed between the upper and lower drums of the chain grate boiler. The flue gas flows and exchanges heat with the outer wall of the convection tube bundle to heat the boiler water inside the tubes. At the same time, fly ash in the flue gas accumulates outside the convection tube bundle. Currently, the fly ash accumulated on the convection tube bundle can be blown into the tail ash collection hopper below the boiler drum by steam blowing. The fly ash is then discharged into the tail grate and falls into the slag discharge machine through the gravity ash discharge valve in the middle of the ash collection pipe below the ash collection hopper.

[0003] Because of the high temperature of fly ash, the surface of the tail ash collection hopper needs to be coated with refractory castable. This results in poor sliding properties of fly ash on the surface of the refractory material, making it easy for fly ash to accumulate and bridge at the cone opening of the tail ash collection hopper. When fly ash reaches a certain height, it will bury part of the convection tube bundle, affecting heat transfer and reducing boiler efficiency. Currently, the ash collection hopper is usually cleaned manually, which is inefficient and results in long downtime, thus reducing processing efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an anti-clogging device for the ash hopper under the convection tube bundle of a boiler. By using this invention, the problem mentioned above is that cleaning the ash hopper is usually done manually, which results in low cleaning efficiency, long downtime, and reduced processing efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An anti-clogging device for the ash hopper under the convection tube bundle of a boiler includes a support frame, in which a boiler body is installed. An ash discharge pipe is connected to the bottom of the boiler body, and a drive component is installed in the ash discharge pipe. A pump pressurization component is installed in the boiler body, and a jet cleaning component is connected to the pump pressurization component. The jet cleaning component is connected to the drive component, and an impact component is connected to the bottom of the pump pressurization component.

[0006] Furthermore, the drive assembly includes several connecting rods fixedly connected inside the ash discharge pipe. One end of each connecting rod is fixedly connected to a conical protective shell. A motor is installed inside the conical protective shell. The output end of the motor is fixedly connected to a hollow rotating shaft. The hollow rotating shaft is rotatably connected to the conical protective shell. An installation frame is fixedly connected inside the boiler body. The hollow rotating shaft is rotatably connected to the installation frame.

[0007] Furthermore, the top of the mounting frame is provided with a slope.

[0008] Furthermore, the air pump pressurization assembly includes an air storage box that is relatively fixedly connected within the mounting frame. The air storage box contains an air storage chamber and a pumping chamber. An air inlet pipe is provided inside the boiler body and communicates with the pumping chamber. One end of the air inlet pipe is connected to a first one-way valve. A limit frame is fixedly connected to the outer wall of the hollow rotating shaft. An arc-shaped limit groove is provided on one side of the limit frame. Two connecting shafts are rotatably connected within the arc-shaped limit groove. A push-pull rod is rotatably connected to the outer wall of the connecting shaft. The push-pull rod is slidably connected to the mounting frame and the air storage box, respectively. A piston is fixedly connected to one end of the push-pull rod and is slidably connected to the inner wall of the air storage box.

[0009] Furthermore, the jet cleaning assembly includes a second one-way valve installed inside the air storage box. The second one-way valve is connected to the pump chamber. A connecting pipe is connected to one side of the air storage box. A pressure relief valve is connected to one end of the connecting pipe. An air outlet pipe is connected to one end of the pressure relief valve. A branch pipe is connected to one end of the air outlet pipe. A rotary joint is connected to one end of the branch pipe. The rotary joint is connected to one end of the hollow rotating shaft. Several protective cylinders are fixedly connected to the outer wall of the hollow rotating shaft. Nozzles are installed inside the protective cylinders and are connected to the hollow rotating shaft.

[0010] Furthermore, the nozzles are tilted.

[0011] Furthermore, the impact assembly includes a bent pipe connected to the gas storage chamber, a protective frame fixedly connected to the bottom of the mounting frame, the bent pipe being fixedly connected to the protective frame, a solenoid valve connected to one end of the bent pipe, and an impact pipe connected to the other end of the solenoid valve.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up drive components, pump pressurization components, and jet cleaning components, manual cleaning of the ash hopper is no longer required, solving the problems of low efficiency and long downtime of traditional manual cleaning. This effectively reduces boiler downtime caused by cleaning and improves boiler processing efficiency and operational continuity.

[0013] By using the jet cleaning component, combined with the high-pressure gas output from the pump pressurization component, it is convenient to perform all-round cleaning of the inner wall of the ash discharge pipe.

[0014] The impact component utilizes the high-pressure gas stored in the pump pressurization component to quickly eject air to form an air cannon, which instantly impacts and disperses the bridge fly ash. This allows for unblocking without the need for manual disassembly of the ash discharge pipe, further reducing boiler downtime due to blockage and ensuring ash discharge efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an anti-clogging ash hopper for a boiler convection tube bundle provided by an embodiment of the present invention. Figure 2 A schematic diagram of the main cross-sectional structure of an anti-clogging device for the ash hopper under the boiler convection tube bundle, provided for an embodiment of this utility model; Figure 3 A cross-sectional structural diagram of an anti-clogging ash hopper for a boiler convection tube bundle provided for an embodiment of this utility model; Figure 4 for Figure 3 Enlarged view of point A; Figure 5 for Figure 3 Enlarged view of point B; Figure 6 for Figure 3 Enlarged view of point C.

[0017] In the diagram: 1. Support frame; 2. Boiler body; 3. Ash discharge pipe; 4. Drive assembly; 41. Connecting rod; 42. Conical protective shell; 43. Motor; 44. Hollow rotating shaft; 45. Mounting frame; 5. Inclined surface; 6. Pump pressurization assembly; 61. Gas storage box; 62. Gas storage chamber; 63. Pump chamber; 64. Inlet pipe; 65. First one-way valve; 66. Limiting frame; 67. Arc-shaped limiting groove; 68. Connecting shaft; 69. Push-pull rod; 610. Piston; 7. Jet cleaning assembly; 71. Second one-way valve; 72. Connecting pipe; 73. Pressure relief valve; 74. Gas outlet pipe; 75. Rotary joint; 76. Protective cylinder; 77. Nozzle; 8. Impact assembly; 81. Bend; 82. Protective frame; 83. Solenoid valve; 84. Impact pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] To address the technical problem of low efficiency and long downtime in manually cleaning ash hoppers, thus reducing processing efficiency, such as... Figures 1-6 As shown, the following preferred technical solutions are provided: An anti-clogging device for the ash hopper under the convection tube bundle of a boiler includes a support frame 1, which can support and fix various components. A controller is installed on one side of the support frame 1 to control various electrical components. The controller is existing technology and is not shown in the figure. The boiler body 2 is installed inside the support frame 1. The bottom of the boiler body 2 is connected to the ash discharge pipe 3. The ash discharge pipe 3 is equipped with a drive component 4. The boiler body 2 is equipped with a pump air pressurization component 6. The pump air pressurization component 6 is connected to a jet cleaning component 7. The jet cleaning component 7 is connected to the drive component 4. In use, the controller causes the drive component 4 to drive the pump air pressurization component 6 to draw in and pressurize the outside air. At this time, the excess gas is blown towards the inner wall of the ash discharge pipe 3 through the jet cleaning component 7. At the same time, the drive component 4 drives the jet cleaning component 7 to rotate, which can easily clean the ash accumulation on the inner wall of the ash discharge pipe 3 from all directions, effectively preventing fly ash from accumulating and bridging in the ash discharge pipe 3, ensuring smooth ash discharge from the boiler ash hopper, eliminating the need for manual cleaning, and reducing downtime. The bottom of the pump air pressurization component 6 is connected to an impact component 8.

[0020] During use, if fly ash accumulates and bridges in the ash discharge pipe 3, the controller activates the impact component 8. Subsequently, the high-pressure gas inside the pump pressurization component 6 is rapidly ejected, forming an air cannon to impact the fly ash in the ash discharge pipe 3. This facilitates the dispersal of the bridged fly ash, quickly clears the blockage in the ash discharge pipe 3, and prevents fly ash blockage from affecting the ash discharge efficiency of the boiler's lower ash hopper. No manual disassembly and cleaning is required, further reducing the boiler downtime for handling blockages and ensuring stable boiler operation.

[0021] The drive assembly 4 includes several connecting rods 41 fixedly connected inside the ash discharge pipe 3. One end of each connecting rod 41 is fixedly connected to a conical protective shell 42. A motor 43 is installed inside the conical protective shell 42. The output end of the motor 43 is fixedly connected to a hollow rotating shaft 44. The hollow rotating shaft 44 is rotatably connected to the conical protective shell 42. An installation frame 45 is fixedly connected inside the boiler body 2. The hollow rotating shaft 44 is rotatably connected to the installation frame 45.

[0022] The top of the mounting frame 45 is provided with a slope 5, which can help prevent fly ash from accumulating.

[0023] The air pump pressurization assembly 6 includes an air storage box 61 that is fixedly connected to the mounting frame 45. The air storage box 61 is provided with an air storage chamber 62 and an air pumping chamber 63. An air inlet pipe 64 is provided in the boiler body 2. The air inlet pipe 64 is connected to the air pumping chamber 63. One end of the air inlet pipe 64 is connected to a first one-way valve 65. A limit frame 66 is fixedly connected to the outer wall of the hollow rotating shaft 44. An arc-shaped limit groove 67 is opened on one side of the limit frame 66. Two connecting shafts 68 are rotatably connected in the arc-shaped limit groove 67. A push-pull rod 69 is rotatably connected to the outer wall of the connecting shaft 68. The push-pull rod 69 is slidably connected to the mounting frame 45 and the air storage box 61 respectively. A piston 610 is fixedly connected to one end of the push-pull rod 69. The piston 610 is slidably connected to the inner wall of the air storage box 61.

[0024] The jet cleaning assembly 7 includes a second one-way valve 71 installed in the air storage box 61. The second one-way valve 71 is connected to the air pump chamber 63. A connecting pipe 72 is connected to one side of the air storage box 61. A pressure relief valve 73 is connected to one end of the connecting pipe 72. An air outlet pipe 74 is connected to one end of the pressure relief valve 73. A branch pipe is connected to one end of the air outlet pipe 74. A rotary joint 75 is connected to one end of the branch pipe. A hollow rotating shaft 44 is connected to one end of the branch pipe. Several protective cylinders 76 are fixedly connected to the outer wall of the hollow rotating shaft 44. A nozzle 77 is installed inside the protective cylinder 76. The nozzle 77 is connected to the hollow rotating shaft 44.

[0025] The nozzle 77 is tilted, which prevents fly ash from entering the nozzle 77 and facilitates protection.

[0026] In operation, the controller drives the motor 43 to rotate the hollow shaft 44 and the limiting frame 66. The two connecting shafts 68 roll within the arc-shaped limiting groove 67, reciprocating the push-pull rods 69. The two push-pull rods 69 drive the two pistons 610 to pump outside air into the pump chamber 63 through the first one-way valve 65 and the air inlet pipe 64. The pistons 610 then compress the air in the pump chamber 63, causing it to enter the air storage chamber 62 through the second one-way valve 71 for pressurization. Excess gas is then blown onto the inner wall of the ash discharge pipe 3 through the second one-way valve 71, connecting pipe 72, pressure relief valve 73, rotary joint 75, hollow shaft 44, and nozzle 77. Simultaneously, the hollow shaft 44 drives the nozzle 77 to rotate, facilitating comprehensive cleaning of the ash accumulation on the inner wall of the ash discharge pipe 3. This effectively prevents fly ash from accumulating and bridging in the ash discharge pipe 3, ensuring smooth ash discharge from the boiler's lower ash hopper without the need for manual cleaning, thus reducing downtime.

[0027] To address the technical problem of difficulty in quickly handling fly ash accumulation and bridging within the ash discharge pipe 3, such as... Figures 3-5 As shown, the following preferred technical solutions are provided: The impact assembly 8 includes a bent pipe 81 connected to the gas storage chamber 62. A protective frame 82 is fixedly connected to the bottom of the mounting frame 45. The bent pipe 81 is fixedly connected to the protective frame 82. One end of the bent pipe 81 is connected to a solenoid valve 83, and the other end of the solenoid valve 83 is connected to an impact pipe 84.

[0028] During use, if fly ash accumulates and bridges in the ash discharge pipe 3, the controller opens the solenoid valve 83. Subsequently, the high-pressure gas inside the gas storage chamber 62 is quickly ejected through the bend pipe 81, solenoid valve 83, and impact pipe 84 to form an air cannon, which impacts the fly ash in the ash discharge pipe 3. This facilitates the dispersal of the bridged fly ash, quickly clears the blockage in the ash discharge pipe 3, and prevents fly ash blockage from affecting the ash discharge efficiency of the boiler's lower ash hopper. No manual disassembly and cleaning is required, further reducing the boiler downtime for handling blockages and ensuring stable boiler operation.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-clogging device for the ash hopper under the convection tube bundle of a boiler, comprising a support frame (1), characterized in that: The support frame (1) is equipped with a boiler body (2), the bottom of the boiler body (2) is connected to an ash discharge pipe (3), a drive assembly (4) is installed in the ash discharge pipe (3), a pump pressurization assembly (6) is installed in the boiler body (2), the pump pressurization assembly (6) is connected to an air jet cleaning assembly (7), the air jet cleaning assembly (7) is connected to the drive assembly (4), and the bottom of the pump pressurization assembly (6) is connected to an impact assembly (8).

2. The anti-clogging ash hopper for a boiler convection tube bundle according to claim 1, characterized in that, The drive assembly (4) includes several connecting rods (41) fixedly connected inside the ash discharge pipe (3). One end of the connecting rod (41) is fixedly connected to a conical protective shell (42). A motor (43) is installed inside the conical protective shell (42). A hollow rotating shaft (44) is fixedly connected to the output end of the motor (43). The hollow rotating shaft (44) is rotatably connected to the conical protective shell (42). An installation frame (45) is fixedly connected inside the boiler body (2). The hollow rotating shaft (44) is rotatably connected to the installation frame (45).

3. The anti-clogging ash hopper for a boiler convection tube bundle according to claim 2, characterized in that, The top of the mounting frame (45) is provided with a slope (5).

4. The anti-clogging ash hopper for a boiler convection tube bundle according to claim 2, characterized in that, The air pump pressurization assembly (6) includes an air storage box (61) that is fixedly connected to the mounting frame (45). The air storage box (61) is provided with an air storage chamber (62) and an air pumping chamber (63). An air inlet pipe (64) is provided in the boiler body (2). The air inlet pipe (64) is connected to the air pumping chamber (63). One end of the air inlet pipe (64) is connected to a first one-way valve (65). A limit frame (66) is fixedly connected to the outer wall of the hollow rotating shaft (44). An arc-shaped limit groove (67) is opened on one side of the limit frame (66). Two connecting shafts (68) are rolled in the arc-shaped limit groove (67). A push-pull rod (69) is rotatably connected to the outer wall of the connecting shaft (68). The push-pull rod (69) is slidably connected to the mounting frame (45) and the air storage box (61) respectively. A piston (610) is fixedly connected to one end of the push-pull rod (69). The piston (610) is slidably connected to the inner wall of the air storage box (61).

5. The anti-clogging ash hopper for a boiler convection tube bundle according to claim 4, characterized in that, The jet cleaning assembly (7) includes a second one-way valve (71) installed in the air storage box (61). The second one-way valve (71) is connected to the air pump chamber (63). A connecting pipe (72) is connected to one side of the air storage box (61). A pressure relief valve (73) is connected to one end of the connecting pipe (72). An air outlet pipe (74) is connected to one end of the pressure relief valve (73). A branch pipe is connected to one end of the air outlet pipe (74). A rotary joint (75) is connected to one end of the branch pipe. A rotary joint (75) is connected to one end of the hollow rotating shaft (44). Several protective cylinders (76) are fixedly connected to the outer wall of the hollow rotating shaft (44). A nozzle (77) is installed inside the protective cylinder (76). The nozzle (77) is connected to the hollow rotating shaft (44).

6. The anti-clogging ash hopper for a boiler convection tube bundle according to claim 5, characterized in that, The nozzle (77) is tilted.

7. The anti-clogging ash hopper for a boiler convection tube bundle according to claim 4, characterized in that, The impact assembly (8) includes a bent pipe (81) connected to the gas storage chamber (62), a protective frame (82) is fixedly connected to the bottom of the mounting frame (45), the bent pipe (81) is fixedly connected to the protective frame (82), one end of the bent pipe (81) is connected to a solenoid valve (83), and one end of the solenoid valve (83) is connected to an impact pipe (84).

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