Biomass boiler tail soot blower

Abstract

The utility model belongs to the technical field of biomass boilers, and particularly relates to a biomass boiler tail soot blower which comprises a boiler body, a wall body with a protection function is arranged on the periphery of the boiler body, a discharging port is formed in the bottom of the boiler body, a hole for installing the discharging port is preset in the wall body, an air inlet pipe is erected on the outer side of the wall body, and an air outlet pipe is erected on the outer side of the air inlet pipe. A flow dividing hole is formed in the air inlet pipe, a switch valve is installed on the flow dividing hole, a rotating pipe is installed in the rotating bearing in a penetrating mode, a rotating handle is installed on the outer wall of one end of the rotating pipe, and by rotating the rotating handle, the direction of a nozzle in the furnace body can be changed, soot blowing operation on the furnace body is achieved, and cleaning of the interior of the furnace body is achieved. Compressed air is adopted as power, the operation cost is low, and damage to pipes is small. The monitoring structure is arranged, soot blowing operation is matched, the air pump is automatically started and stopped, more energy can be saved, meanwhile, pipeline safety is guaranteed, and pipe explosion is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of biomass boilers, and specifically relates to a soot blowing device for the tail of a biomass boiler. Background Art

[0002] A biomass boiler is a boiler device that uses biomass as fuel. Its fuel mainly includes renewable resources such as crop straws, forestry waste, and municipal solid waste. Biomass boilers have the advantages of environmental protection, energy conservation, and renewable resources;

[0003] When cleaning the ash deposit on the heating surface at the tail of a biomass boiler, steam soot blowing is adopted. This technology uses steam as the medium and sends the steam through a pipeline into a steam soot blower for soot blowing;

[0004] The existing soot blowing structure has a high cost, is prone to blockage, and cannot be withdrawn in time after blockage, resulting in the steam flushing the pipeline for a long time and causing the boiler to burst. It requires a large space and has a high operating cost. Therefore, in view of the above problems, a soot blowing device for the tail of a biomass boiler is proposed. Summary of the Utility Model

[0005] In order to make up for the deficiencies of the existing technology and address the problems of the existing equipment, the utility model proposes a soot blowing device for the tail of a biomass boiler.

[0006] The technical solution adopted by the utility model to solve its technical problems is a soot blowing device for the tail of a biomass boiler, which includes a furnace body. A wall for protection is provided on the periphery of the furnace body. An outlet is provided at the bottom of the furnace body. An aperture for installing the outlet is preset on the wall. An outlet cover plate is cooperatively installed on the outlet;

[0007] An inlet pipe is erected on the outer side of the wall. The inlet pipe is provided with shunt holes, and a switching valve is installed on the shunt holes. A monitoring structure is installed on the inlet pipe;

[0008] An installation hole is opened on the wall. A rotary bearing is arranged in the installation hole. A rotary pipe is installed through the inside of the rotary bearing. A rotary handle is installed on the outer wall of one end of the rotary pipe;

[0009] The other end of the rotary pipe penetrates through the bottom furnace wall of the furnace body, and the contact position between the rotary pipe and the furnace wall of the furnace body is treated with rolling seal;

[0010] One end of the rotary pipe is installed with a connector, and the connector is connected to the switching valve through a connecting hose.

[0011] Preferably, a grille is arranged at a position slightly below the inner wall of the furnace body, and the other end of the rotary pipe extends below the grille.

[0012] Preferably, a nozzle is installed on the wall of the other end of the rotating pipe. The nozzle is communicated with the rotating pipe. A feed inlet is arranged on the furnace body, and the feed inlet is located above the grille.

[0013] Preferably, the monitoring structure includes a movable cylinder. The movable cylinder is installed on the surface of the intake pipe through a connecting pipe. Air holes are arranged at the bottom of the movable cylinder. The intake pipe and the connecting pipe are also in a communicated state, which can ensure the communicated state between the monitoring structure and the intake pipe.

[0014] Preferably, a movable plug is slidably installed in the movable cylinder. A push rod is vertically fixed to the top side of the movable plug. The push rod penetrates through the top side wall of the movable cylinder. A spring is fixedly connected between the top side of the movable plug and the inner wall of the top of the movable cylinder. A fixed pipe is fixed to the top of the movable cylinder. An electrode ring is fixed to the inner wall of the fixed pipe. A limit cover plate is fixed to the top end of the push rod, and an electrode plate is sleeved on the outer side of the top of the push rod.

[0015] Preferably, the electrode plate and the electrode ring are contact electrodes. The electrode plate and the electrode ring are connected in series on the switch circuit of the air pump. One end of the intake pipe is externally connected with an air pump, which can provide compressed air for the soot blowing structure.

[0016] The beneficial effects of the present utility model are as follows:

[0017] When the biomass boiler of the present utility model is in use, it is necessary to clean the dust at the bottom thereof. A soot blowing device is used for soot blowing operation. During the soot blowing operation and the operation of the air pump, compressed air is conveyed through the intake pipe. The switch valve is opened, and the compressed air is conveyed into the rotating pipe through the connecting hose. By rotating the rotating handle, the direction of the nozzle in the furnace body can be changed, so as to realize the soot blowing operation of the furnace body and clean the inside of the furnace body, so as to achieve the purpose of soot blowing in different directions. Using compressed air as the power, the operation cost is low and the damage to the pipes is small.

[0018] By arranging the monitoring structure, when soot blowing and exhausting, the pressure in the chamber below the movable plug drops. Under the expansion action of the spring, the movable plug can be pushed downward. At this time, the electrode plate and the electrode ring are in contact, and the air pump can be powered on to perform the compression operation of the air, ensuring the stable air pressure for soot blowing. Cooperating with the soot blowing operation, the air pump starts and stops automatically, which can be more energy-saving and ensure the safety of the pipeline to avoid pipe explosion. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is a schematic diagram of the overall structure;

[0021] Figure 2 is a schematic diagram of the sectional structure of the furnace body;

[0022] Figure 3 is a schematic diagram of the overall top view structure;

[0023] Figure 4 is Figure 3 the schematic diagram of the sectional structure along A-A in

[0024] Figure 5 is a schematic diagram of the monitoring structure;

[0025] In the figure: 1. Furnace body; 2. Discharge port; 3. Discharge port cover plate; 4. On-off valve; 5. Inlet pipe; 6. Monitoring structure; 7. Rotating pipe; 8. Rotating handle; 9. Connecting hose; 10. Wall; 11. Connector; 12. Nozzle; 13. Grille; 14. Feed inlet; 61. Movable cylinder; 62. Movable plug; 63. Connecting pipe; 64. Spring; 65. Push rod; 66. Fixed pipe; 67. Electrode ring; 68. Electrode plate; 69. Limit cover plate. Specific implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-5 As shown, a soot blowing device for the tail of a biomass boiler includes a furnace body 1. A wall 10 with a protective function is arranged on the periphery of the furnace body 1. A discharge port 2 is arranged at the bottom of the furnace body 1. A hole diameter for installing the discharge port 2 is preset on the wall 10, and a discharge port cover plate 3 is cooperatively installed on the discharge port 2;

[0028] An inlet pipe 5 is erected on the outer side of the wall 10. A flow dividing hole is arranged on the inlet pipe 5, and an on-off valve 4 is installed on the flow dividing hole. A monitoring structure 6 is installed on the inlet pipe 5;

[0029] An installation hole is opened on the wall 10, and a rotary bearing is arranged in the installation hole. A rotary pipe 7 is installed through the inside of the rotary bearing. A rotary handle 8 is installed on the outer wall of one end of the rotary pipe 7;

[0030] The other end of the rotary pipe 7 penetrates through the bottom furnace wall of the furnace body 1, and the contact position between the rotary pipe 7 and the furnace wall of the furnace body 1 is subjected to rolling seal treatment;

[0031] One end of the rotating tube 7 is provided with a connector 11, and the connector 11 is connected to the switching valve 4 through a connecting hose 9.

[0032] A grille 13 is arranged at a position slightly below the inner wall of the furnace body 1, and the other end of the rotating tube 7 extends below the grille 13.

[0033] A nozzle 12 is installed on the pipe wall at the other end of the rotating tube 7. The nozzle 12 is communicated with the rotating tube 7. A feed inlet 14 is arranged on the furnace body 1, and the feed inlet 14 is located above the grille 13. One end of the air inlet pipe 5 is externally connected with an air pump;

[0034] When the biomass boiler is in use, it is necessary to clean the dust at its bottom. A soot blowing device is used for soot blowing operation. During the soot blowing operation and the air pump operation, compressed air is conveyed through the air inlet pipe 5. The switching valve 4 is opened, and the compressed air is conveyed into the rotating tube 7 through the connecting hose 9. By rotating the rotating handle 8, the direction of the nozzle 12 in the furnace body 1 can be changed, so as to realize the soot blowing operation of the furnace body 1 and clean the inside of the furnace body 1, so as to achieve the purpose of soot blowing in different directions.

[0035] The monitoring structure 6 includes a movable cylinder 61. The movable cylinder 61 is installed on the surface of the air inlet pipe 5 through a connecting pipe 63. Air holes are arranged at the bottom of the movable cylinder 61, and the air inlet pipe 5 and the connecting pipe 63 are also in a communicating state.

[0036] A movable plug 62 is slidably installed in the movable cylinder 61. A push rod 65 is vertically fixed to the top side of the movable plug 62. The push rod 65 penetrates through the top side wall of the movable cylinder 61. A spring 64 is fixedly connected between the top side of the movable plug 62 and the inner wall of the top of the movable cylinder 61. A fixed pipe 66 is fixed to the top of the movable cylinder 61. An electrode ring 67 is fixed to the inner wall of the fixed pipe 66. A limit cover plate 69 is fixed to the top end of the push rod 65, and an electrode piece 68 is sleeved on the outer side of the top of the push rod 65.

[0037] The electrode piece 68 and the electrode ring 67 are contact electrodes. The electrode piece 68 and the electrode ring 67 are connected in series on the switch circuit of the air pump. One end of the air inlet pipe 5 is externally connected with an air pump;

[0038] In order to be more energy-saving during the soot blowing process, by setting the monitoring structure 6, when the soot blowing operation is not carried out, due to the operation of the air pump, the air pressure in the air inlet pipe 5 increases. When the air pressure in the air inlet pipe 5 increases, since the movable cylinder 61 and the air inlet pipe 5 are in communication with each other, the pressure in the chamber below the movable plug 62 increases, pushing the movable plug 62 upward to compress the spring 64. When the movable plug 62 rises, the push rod 65 rises, which can separate the electrode piece 68 and the electrode ring 67, and can disconnect the circuit of the air pump, and the air pump stops operating;

[0039] During soot blowing and exhausting, the pressure in the chamber below the movable plug 62 drops. Under the expansion of the spring 64, it can push the movable plug 62 downward. At this time, the electrode piece 68 contacts the electrode ring 67, enabling the air pump to be powered on, compressing the air, ensuring the stable air pressure for soot blowing, and coordinating with the soot blowing operation. The air pump starts and stops automatically, which can be more energy-efficient and ensure the safety of the pipeline, avoiding pipe explosion.

[0040] Working principle: When the biomass boiler is in use, it is necessary to clean the dust at its bottom. The soot blowing device is used for soot blowing operation. During the soot blowing operation, the air pump operates. Compressed air is delivered through the air inlet pipe 5. The switch valve 4 is opened, and the compressed air is delivered into the rotating pipe 7 through the connecting hose 9. Through the rotating nozzle 8, the direction of the nozzle 12 in the furnace body 1 can be changed, realizing the soot blowing operation of the furnace body 1 and cleaning the inside of the furnace body 1 to achieve the purpose of soot blowing in different directions.

[0041] By setting the monitoring structure 6, when the soot blowing operation is not carried out, due to the operation of the air pump, the air pressure in the air inlet pipe 5 increases. When the air pressure in the air inlet pipe 5 increases, since the movable cylinder 61 and the air inlet pipe 5 are interconnected, the pressure in the chamber below the movable plug 62 increases, pushing the movable plug 62 upward, compressing the spring 64. When the movable plug 62 rises, the push rod 65 rises, enabling the separation of the electrode piece 68 and the electrode ring 67, and disconnecting the circuit of the air pump, so that the air pump stops operating.

[0042] During soot blowing and exhausting, the pressure in the chamber below the movable plug 62 drops. Under the expansion of the spring 64, it can push the movable plug 62 downward. At this time, the electrode piece 68 contacts the electrode ring 67, enabling the air pump to be powered on, compressing the air, ensuring the stable air pressure for soot blowing, and coordinating with the soot blowing operation. The air pump starts and stops automatically, which can be more energy-efficient and ensure the safety of the pipeline, avoiding pipe explosion.

[0043] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", 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 present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0044] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A biomass boiler tail sootblowing device, characterized by: It includes a furnace body (1), a wall (10) with a protective function is arranged around the furnace body (1), a discharge port (2) is arranged at the bottom of the furnace body (1), a hole diameter for installing the discharge port (2) is preset on the wall (10), and a discharge port cover plate (3) is fitted and installed on the discharge port (2); An intake pipe (5) is erected outside the wall (10), a diversion hole is arranged on the intake pipe (5), a switching valve (4) is installed on the diversion hole, and a monitoring structure (6) is installed on the intake pipe (5); An installation hole is formed in the wall (10), a rotary bearing is arranged in the installation hole, and a rotary pipe (7) is installed through the inside of the rotary bearing. A rotary handle (8) is installed on the outer wall of one end of the rotary pipe (7); The other end of the rotary pipe (7) penetrates through the bottom furnace wall of the furnace body (1), and a rolling seal treatment is performed at the contact position between the rotary pipe (7) and the furnace wall of the furnace body (1); A connector (11) is installed at one end of the rotary pipe (7), and the connector (11) is connected to the switching valve (4) through a connecting hose (9).

2. The biomass boiler tail soot blowing device according to claim 1, characterized in that: A grille (13) is arranged at a position slightly below the inner wall of the furnace body (1), and the other end of the rotary pipe (7) extends below the grille (13).

3. The soot blowing device at the tail of a biomass boiler according to claim 1, characterized in that: A nozzle (12) is installed on the pipe wall at the other end of the rotary pipe (7), the nozzle (12) is communicated with the rotary pipe (7), and a feed port (14) is arranged on the furnace body (1), and the feed port (14) is located above the grille (13).

4. A biomass boiler tail sootblowing device according to claim 1, characterized in that: The monitoring structure (6) includes a movable cylinder (61), the movable cylinder (61) is installed on the surface of the intake pipe (5) through a connecting pipe (63), air holes are arranged at the bottom of the movable cylinder (61), and the intake pipe (5) and the connecting pipe (63) are also in a communicated state.

5. The biomass boiler tail sootblowing device according to claim 4, characterized in that: A movable plug (62) is slidably installed in the movable cylinder (61), a push rod (65) is vertically fixed on the top side of the movable plug (62), the push rod (65) penetrates through the top side wall of the movable cylinder (61), a spring (64) is fixedly connected between the top side of the movable plug (62) and the inner wall of the top of the movable cylinder (61), a fixed pipe (66) is fixed on the top of the movable cylinder (61), an electrode ring (67) is fixed on the inner wall of the fixed pipe (66), a limit cover plate (69) is fixed at the top end of the push rod (65), and an electrode plate (68) is sleeved on the outer side of the top of the push rod (65).

6. The soot blowing device at the tail of a biomass boiler according to claim 5, characterized in that: The electrode plate (68) and the electrode ring (67) are contact electrodes, the electrode plate (68) and the electrode ring (67) are connected in series on the switch circuit of the air pump, and an air pump is externally connected to one end of the intake pipe (5).

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