Grate ash removal structure for biomass boiler

Abstract

The invention discloses a fire grate ash removal structure for a biomass boiler, and relates to the technical field of pipeline cleaning, the fire grate ash removal structure comprises a boiler structure, the boiler structure comprises a boiler body, a combustion furnace, a rotary chamber and a flow dividing chamber, and a plurality of first heat exchange pipes and a plurality of second heat exchange pipes are fixedly connected between the rotary chamber and the flow dividing chamber; a first blocking frame is fixedly connected between the flow dividing chamber and the inner wall of the boiler body, a pipeline dredging structure is arranged between the rotary chamber and the flow dividing chamber, a plurality of first heat exchange pipes and a plurality of second heat exchange pipes are fixedly connected between the rotary chamber and the flow dividing chamber, and a second blocking frame is fixedly connected between the flow dividing chamber and the inner wall of the boiler body. A pipeline dredging structure is arranged between the rotary chamber and the flow dividing chamber, a transmission assembly and a back-flushing cleaning assembly are installed in the boiler body, and dust and impurities attached to the interiors of the second heat exchange pipes can be rapidly cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline cleaning, in particular to a grate cleaning structure for a biomass boiler. Background Art

[0002] Biomass boiler is a type of boiler. A boiler that uses biomass energy as fuel is called a biomass boiler. It is divided into biomass steam boiler, biomass hot water boiler, biomass hot air furnace, biomass thermal oil furnace, vertical biomass boiler, horizontal biomass boiler, etc. The classification of biomass boilers: horizontal biomass boiler, vertical biomass boiler.

[0003] However, the fuel of the boiler is BMF fuel, and the probability of soot production during fuel combustion is higher than that of oil and gas raw materials. This makes it easier for dust and impurities to adhere to the inside of the pressurized heat exchange pipes that utilize the heat in the combustion flue gas, affecting the quality of heat exchange in the pressurized heat exchange pipes and causing heat waste. Summary of the invention

[0004] The object of the present invention is to provide a grate cleaning structure for a biomass boiler to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a biomass boiler grate cleaning structure, comprising a boiler structure, wherein the boiler structure comprises a boiler furnace body, a combustion furnace, a rotary chamber and a diversion chamber; A plurality of heat exchange tubes 1 and 2 are fixedly connected between the rotary chamber and the diversion chamber, a barrier frame 1 is fixedly connected between the diversion chamber and the inner wall of the boiler furnace, a pipeline dredging structure is arranged between the rotary chamber and the diversion chamber, and the pipeline dredging structure comprises a barrier frame 2, a double-axis forward and reverse motor, a transmission assembly and a recoil cleaning assembly, and the transmission assembly cooperates with the recoil cleaning assembly to clean the inside of the plurality of heat exchange tubes 2; The recoil cleaning assembly includes a barrier frame 3, a plurality of heat exchange tubes 2 are each provided with a through hole at one end, a filter screen is provided inside the through hole, a plurality of air guide grooves 2 are each provided at one side of the through hole, a transmission shaft 1 is fixedly connected to a side of the barrier frame 3 close to the dual-axis forward and reverse motor, and a speed change assembly is provided between the transmission shaft 1 and the dual-axis forward and reverse motor; The transmission assembly includes a transmission shaft 2 and a gear 5 fixedly mounted on the outer side of one end of the transmission shaft 2, a gear 6 is arranged on the outer side of multiple heat exchange tubes 2 close to the gear 5, and a gear 7 is mounted on the outer side of the remaining multiple heat exchange tubes 2, multiple gears 6 and multiple gears 7 are fixedly connected to a cleaning rack, and one end of the cleaning rack extends into the interior of the adjacent heat exchange tube 2 and contacts the inner wall of the heat exchange tube 2.

[0006] Preferably, the combustion furnace is inserted on the boiler furnace body, the rotating chamber is fixedly installed on one side of the boiler furnace body, the recoil cleaning assembly is arranged inside the rotating chamber, and the diversion chamber is fixedly installed on the other side of the boiler furnace body, one end of the combustion furnace is fixedly connected with an air intake pipe, one end of the air intake pipe is fixedly connected with a three-way valve, an inlet valve and an exhaust valve are fixedly installed on the top of the boiler furnace body, an ash discharge port is provided at one end of the boiler furnace body away from the three-way valve, a door body is inserted inside the ash discharge port, and a plurality of mounting bolts are threadedly connected between the door body and the boiler furnace body; a connecting pipe 1 is fixedly connected to the air inlet end of the three-way valve, and one end of the combustion furnace away from the air intake pipe passes through the rotating chamber and then extends to the inside of the diversion chamber, the combustion furnace is fixedly connected to the boiler furnace body, the rotating chamber and the diversion chamber, a plurality of the heat exchange tubes 1 are arranged on the outside of the barrier frame 1, and a plurality of the heat exchange tubes 2 are arranged inside the barrier frame 1.

[0007] Preferably, a fuel preheating structure is provided at the top of one side of the air intake pipe, and the fuel preheating structure includes a fuel tank, a feed pipe fixedly connected to the top of the fuel tank, a plurality of inclined guide tubes fixedly connected between one side of the fuel tank and the air intake pipe, and two air guide boxes 1 rotatably connected at both ends of the fuel tank, a plurality of air guide boxes 2 are fixedly connected between the two air guide boxes 1, and one end of the air guide box 2 is in contact with the inner wall of the fuel tank.

[0008] Preferably, one end of an air guide box one away from the boiler furnace body is rotatably connected to a smoke exhaust pipe two, one side of an air guide box one close to the boiler furnace body is fixedly connected to a connecting pipe two, one end of the connecting pipe two is rotatably connected to a connecting pipe three, one side of the diversion chamber is fixedly connected to a smoke exhaust pipe one, one end of the smoke exhaust pipe one extends to the outside of the boiler furnace body and is fixedly connected to the connecting pipe three, a plurality of pipe racks one are fixedly connected between the outside of the connecting pipe three and the boiler furnace body; a gear two is fixedly sleeved on the outside of the connecting pipe two, the gear two is meshed with a gear one, a drive motor is provided on one side of the gear one, the drive motor is fixedly connected to the boiler furnace body, and the gear one is fixedly sleeved on the output end of the drive motor.

[0009] Preferably, a state control structure is arranged between the normally closed end of the three-way valve and the recoil cleaning component, and the state control structure comprises a connecting pipe five fixedly connected to the normally closed end of the three-way valve, an inner ring fixedly connected inside the connecting pipe five, a piston shaft arranged inside the inner ring, and an air storage member fixedly connected to one side of the piston shaft and a plurality of spring-type telescopic rods, and a plurality of spring-type telescopic rods are all fixedly connected to a fixing plate two between the connecting pipe five, the connecting pipe five passes through a boiler furnace body at one end and extends to the interior of a rotary chamber, an electromagnetic valve is fixedly connected between the outer side of the connecting pipe five and the boiler furnace body, and a position on the outer side of the air storage member away from the inner ring is fixed There are two connecting pipes four connected, an air guide groove one is opened on both sides of the barrier frame two, a sliding sealing plate is inserted on both sides of the barrier frame two, a fixed plate one is fixedly connected to one side of the sliding sealing plate, a pneumatic telescopic rod is fixedly connected to one side of the fixed plate one, the outer wall of the pneumatic telescopic rod is fixedly connected to the rotary chamber, the oil inlet of the pneumatic telescopic rod is fixedly connected to the adjacent connecting pipe four, a plurality of baffles are fixedly installed at a position away from the three-way valve inside the connecting pipe five, an air guide groove three is set on one side of the plurality of baffles, the connecting pipe five is rotatably connected to the barrier frame three, and the air guide groove three is opened on the barrier frame three.

[0010] Preferably, the barrier frame 2 and the dual-axis forward and reverse motor are both fixedly installed inside the rotating chamber, the through hole is opened on the barrier frame 3, the filter is fixedly connected to the barrier frame 3, the air guide groove 2 is opened on the barrier frame 3, the transmission shaft 1 is rotatably connected to the rotating chamber, one end of the transmission shaft 2 extends to the inside of the diversion chamber, the gear 5 is arranged inside the barrier frame 1, the multiple gears 6 and the multiple gears 7 are all rotatably connected to the diversion chamber, the gear 7 is meshed with the adjacent gear 6, one of the gears 6 is meshed with the gear 5, and the two adjacent gears 6 are meshed together.

[0011] Preferably, the speed change assembly includes a brake installed on the outside of a transmission shaft one, the brake is fixedly connected to the rotating chamber, a gear four is provided on the fixed sleeve on the outside of the transmission shaft one, the gear four is meshed with gear three, a transmission is fixedly installed on the gear three, a short plate is fixedly connected between the transmission and the rotating chamber, the output end of the dual-axis forward and reverse motor close to the blocking frame three is fixedly connected to the input end of the transmission, and the output end of the dual-axis forward and reverse motor away from the blocking frame three is fixedly connected to the transmission shaft two.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present application, a transmission assembly and a recoil cleaning assembly are installed inside the boiler furnace body, so that dust and impurities attached to the inside of multiple heat exchange tubes can be quickly cleaned.

[0013] 2. When the present application is used, the airflow enters the interior of the barrier frame 3 through the air guide groove 2 and the air guide groove 3. At this time, the air guide groove 2 replaces the filter and is aligned with the heat exchange tube 2. The airflow enters the interior of the heat exchange tube 2 through the air guide groove 2 to blow out the dust and impurities cleaned by the cleaning frame, thereby ensuring the quality of the cleaning inside the heat exchange tube 2, reducing the time for the filter to be recoiled by the high-speed airflow, allowing the filter to be properly maintained and unblocked, and ensuring the service life of the filter.

[0014] 3. When the present application is used, the barrier frame 3 is arranged inside the lower cavity. Under the action of the partition frame, the airflow entering the rotary chamber can only pass through the filter and then enter the heat exchange tube 2 for discharge. The airflow plays the role of backwashing and cleaning the filter. The airflow cleans the dust and impurities accumulated inside the heat exchange tube 2, ensuring the filter's effect on flue gas filtration, and the maintenance of the filter can be completed quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the partial structure of the boiler body of the present invention; Figure 3 It is a structural schematic diagram of the combustion furnace of the present invention; Figure 4 This is a schematic diagram of the structure of the connecting pipe 5 of the present invention; Figure 5 It is a structural schematic diagram of the fuel preheating structure of the present invention; Figure 6 It is a structural schematic diagram of the diversion chamber of the present invention; Figure 7 for Figure 6 A magnified view of the structure at A; Figure 8 It is a structural schematic diagram of the rotary chamber of the present invention; Fig. 9 It is a structural schematic diagram of the sliding sealing plate of the present invention; Fig.10 It is a partial structural schematic diagram of the connecting pipe 5 of the present invention; Fig.11 It is a structural schematic diagram of the second barrier frame of the present invention; Fig.12 It is a structural schematic diagram of the barrier frame 3 of the present invention; Fig.13 It is a schematic structural diagram of a transmission shaft 1 of the present invention.

[0016] Numbers in the figure: 1. Boiler structure; 11. Boiler furnace; 12. Water inlet valve; 13. Exhaust valve; 14. Door body; 15. Mounting bolts; 16. Ash outlet; 17. Air intake pipe; 18. Three-way valve; 19. Connecting pipe 1; 110. Combustion furnace; 111. Rotating chamber; 112. Diverter chamber; 113. Blocking frame 1; 114. Heat exchange tube 1; 115. Heat exchange tube 2; 116. Exhaust pipe 1; 2. Fuel preheating structure; 21. Fuel tank; 22. Air guide box 1; 23. Air guide box 2; 24. Driving motor; 25. Gear 1; 26. Gear 2; 27. Connecting pipe 2; 28. Connecting pipe 3; 29. ​​Pipe frame 1; 210. Exhaust pipe 2; 211. Feed pipe; 212. Feed guide inclined pipe; 3. Pipe dredging structure; 3 1. Blocking frame 2; 32. Air guide groove 1; 33. Sliding sealing plate; 34. Fixed plate 1; 35. Pneumatic telescopic rod; 36. Blocking frame 3; 37. Through hole; 38. Filter; 39. Air guide groove 2; 311. Double-axis forward and reverse motor; 312. Transmission; 313. Gear 3; 314. Gear 4; 315. Transmission shaft 1; 316. Brake; 317. Transmission shaft 2; 318. Gear 5; 319. Gear 6; 320. Gear 7; 321. Cleaning frame; 4. State control structure; 41. Inner ring; 42. Piston shaft; 43. Air storage part; 44. Spring-type telescopic rod; 45. Fixed plate 2; 46. Baffle; 47. Connecting pipe 4; 48. Air guide groove 3; 49. Connecting pipe 5; 410. Solenoid valve. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example: Figure 1-Figure 13As shown, the present invention provides a technical solution of a grate cleaning structure for a biomass boiler, including a boiler structure 1, the boiler structure 1 includes a boiler furnace body 11, a combustion furnace 110 inserted on the boiler furnace body 11, a rotating chamber 111 fixedly connected to one side of the boiler furnace body 11, a diverter chamber 112 fixedly connected to the other side of the boiler furnace body 11, an air intake pipe 17 fixedly connected to one end of the combustion furnace 110, and a three-way valve 18 fixedly connected to one end of the air intake pipe 17, a plurality of heat exchange tubes 114 and a plurality of heat exchange tubes 115 are fixedly connected between the rotating chamber 111 and the diverter chamber 112, A barrier frame 113 is fixedly connected between the flow chamber 112 and the inner wall of the boiler furnace body 11, and a pipeline clearing structure 3 is arranged between the rotating chamber 111 and the diversion chamber 112. The pipeline clearing structure 3 includes a barrier frame 31, a dual-axis forward and reverse motor 311, a transmission assembly and a recoil cleaning assembly. The transmission assembly is arranged inside the diversion chamber 112 for cleaning the inside of multiple heat exchange tubes 115. The recoil cleaning assembly is arranged inside the rotating chamber 111. A state control structure 4 is arranged between the normally closed end of the three-way valve 18 and the recoil cleaning assembly. A fuel preheating structure 2 is arranged on the top of one side of the air intake pipe 17.

[0019] In the boiler structure 1 provided in the present application, the air inlet end of the three-way valve 18 is fixedly connected with a connecting pipe 19, and the connecting pipe 19 is used to connect the air outlet end of the blower, and the normally open end of the three-way valve 18 is fixedly connected with the air inlet pipe 17, and the combustion furnace 110 inserted on the boiler furnace body 11 is fixedly connected with the boiler furnace body 11, the rotary chamber 111 and the diversion chamber 112, and the combustion furnace 110 is fixedly connected with one end of the air inlet pipe 17, and the control blower can be operated to infuse air into the combustion furnace 110 through the three-way valve 18 and the air inlet pipe 17, and the end of the combustion furnace 110 away from the air inlet pipe 17 passes through the rotary chamber 111 and then extends to the inside of the diversion chamber 112, and the combustion furnace 110 is connected with the inside of the diversion chamber 112, and the smoke generated by the combustion in the combustion furnace 110 enters the inside of the diversion chamber 112; A plurality of heat exchange tubes 114 and 115 are fixedly connected between the rotating chamber 111 and the diverter chamber 112. A barrier frame 113 is fixedly connected between the diverter chamber 112 and the inner wall of the boiler body 11. The barrier frame 113 divides the interior of the diverter chamber 112 into an inner ring and an outer ring. One end of the heat exchange tube 114 disposed inside the diverter chamber 112 is disposed outside the barrier frame 113. The heat exchange tube 114 is connected to the inner and outer rings of the diverter chamber 112. One end of the plurality of heat exchange tubes 115 disposed inside the diverter chamber 112 is disposed inside the barrier frame 113. The heat exchange tube 114 is connected to the inner and outer rings of the diverter chamber 112. The inner circles of the diverter chamber 112 are connected, and one end of the combustion furnace 110 is arranged in the inner circle of the diverter chamber 112. After the flue gas enters the diverter chamber 112, it enters the multiple heat exchange tubes 115 under the limit of the barrier frame 113, and enters the rotating chamber 111 under the guidance of the heat exchange tubes 115; and the other ends of the heat exchange tubes 114 and 115 are both arranged in the rotating chamber 111. The flue gas entering the rotating chamber 111 returns to the inner and outer circles of the diverter chamber 112 through the multiple heat exchange tubes 115, and finally the flue gas is discharged from the boiler body 11 through the exhaust pipe 116 fixedly connected to one side of the diverter chamber 112; The boiler structure 1 includes a rotating chamber 111, a diversion chamber 112, a barrier frame 113, a plurality of heat exchange tubes 114, a plurality of heat exchange tubes 2 115, etc. The flue gas moves inside the boiler furnace body 11 for a period of time. The flue gas exchanges heat with water inside the boiler furnace body 11 while flowing inside the plurality of heat exchange tubes 1 114 and the plurality of heat exchange tubes 2 115 having good thermal conductivity, thereby recycling the heat in the flue gas.

[0020] A boiler with automatic pipeline cleaning function is composed of a boiler structure 1, a fuel preheating structure 2, a pipeline dredging structure 3, a state control structure 4 and other structures. The specific working principle is as follows: Embodiment 1: After the premixed gas is supplied to the blower connected to the three-way valve 18 through the connecting pipe 19, the blower conveys the premixed gas to the inside of the combustion furnace 110 through the three-way valve 18 and the air intake pipe 17, and the ignition device arranged inside the combustion furnace 110 (arranging the ignition device inside the combustion chamber of the boiler is a well-known technology and will not be described in detail here) works to ignite the premixed gas, and the premixed gas burns to preheat the inside of the combustion furnace 110; After a period of time, the driving motor 24 fixedly installed on the boiler furnace body 11 in the fuel preheating structure 2 is controlled to work. Since both ends of the fuel tank 21 in the fuel preheating structure 2 are rotatably connected to the air guide box 1 22, and a plurality of air guide boxes 2 23 are fixedly connected between the two air guide boxes 1 22, the two air guide boxes 1 22 and the plurality of air guide boxes 2 23 form a heat exchange rack, and one end of the air guide box 1 22 far away from the boiler furnace body 11 is rotatably connected to the exhaust pipe 2 210, and the exhaust pipe 2 210 is connected to the heat exchanger or the bag dust collector, and one side of the air guide box 1 22 close to the boiler furnace body 11 is fixedly connected to the connecting pipe 27, and the connecting pipe 3 28 rotatably connected to one end of the connecting pipe 27 is fixedly connected to the end of the exhaust pipe 116 extending to the outside of the boiler furnace body 11; The smoke discharged from the smoke exhaust pipe 116 flows toward the heat exchange rack under the action of the connecting pipe 3 28 and the connecting pipe 2 27. The smoke is discharged through the smoke exhaust pipe 2 210 after heat exchange with the biomass fuel inside the fuel tank 21 under the action of multiple air guide boxes 2 23. The biomass fuel inside the fuel tank 21 is preheated by the smoke generated by the combustion inside the combustion furnace 110, so that the biomass fuel is quickly ignited and burned. The smoke in contact with the biomass fuel is the smoke that has been heat exchanged once with the water inside the boiler furnace body 11, so that the internal temperature of the fuel tank 21 is maintained in a relatively safe range, avoiding high temperature damage to the staff when adding biomass fuel to the inside of the fuel tank 21 through the feed pipe 211 fixedly connected to the top of the fuel tank 21.

[0021] The driving motor 24 fixedly connected to the boiler furnace body 11 is controlled to work, and a gear 26 is fixedly sleeved on the outer side of the connecting pipe 27. The gear 26 meshes and drives the gear 1 25 fixedly sleeved on the output end of the driving motor 24. The working driving motor 24 drives the heat exchange frame to rotate through the gear 1 25, the gear 2 26 and the connecting pipe 27. One end of the air guide box 23 is in contact with the inner wall of the fuel tank 21. The rotating multiple air guide boxes 23 stir the biomass fuel inside the fuel tank 21 to avoid agglomeration of the biomass fuel and ensure sufficient combustion of the biomass fuel; and multiple material guide inclined tubes 212 are fixedly connected between one side of the fuel tank 21 and the air intake pipe 17. Part of the biomass fuel stirred by the air guide box 23 enters the interior of the air intake pipe 17 through the multiple material guide inclined tubes 212. The biomass fuel entering the interior of the air intake pipe 17 moves to the interior of the combustion furnace 110 under the action of the airflow, and the biomass fuel burns inside the combustion furnace 110.

[0022] After the driving motor 24 has been working for a period of time, air is supplied to the blower connected to the three-way valve 18 through the connecting pipe 19, and the air flows at a high speed inside the air intake pipe 17. The air continuously pushes the fuel preheating structure 2 into the biomass fuel inside the air intake pipe 17 and transports it to the combustion furnace 110 for combustion; The present application sets a fuel preheating structure 2 on one side of the boiler structure 1 so that the boiler structure 1 can flexibly select and switch between burning premixed fuel gas and biomass fuel, thereby ensuring the flexibility and adaptability of the boiler structure 1.

[0023] Embodiment 2: After the boiler structure 1 has been working for a period of time using biomass fuel, the boiler structure 1 stops working. The multiple mounting bolts 15 threadedly connected between the door body 14 and the boiler furnace body 11 are rotated to remove the fixing between the door body 14 and the boiler furnace body 11. The door body 14 is then pulled out of the ash discharge port 16 opened at the end of the boiler furnace body 11 away from the three-way valve 18, so that the ash discharge port 16 can be exposed. The ash discharge port 16 is connected to the inner circle inside the diversion chamber 112. At this time, the dust generated by the combustion of biomass fuel inside the combustion furnace 110 with a larger internal space can be cleaned.

[0024] Furthermore, because the barrier frame three 36 in the recoil cleaning assembly arranged inside the rotating chamber 111 is rotatably connected to the pipe frame one 29, a plurality of heat exchange tubes two 115 are each provided with a through hole 37 at one end, and the plurality of through holes 37 are all arranged inside the rotating chamber 111, and the through holes 37 are opened on the barrier frame three 36, and the filter net 38 arranged inside the through hole 37 is blocked at one end of the heat exchange tube two 115, so that the flue gas entering the rotating chamber 111 is filtered by the plurality of filter nets 38, and most of the dust and impurities in the flue gas are retained inside the heat exchange tube two 115.

[0025] When the door body 14 is separated from the boiler furnace body 11, the three-way valve 18 and the blower are controlled to work, so that the normally closed end of the three-way valve 18 is opened, and the connecting pipe 5 49 in the state control structure 4 is fixed to the normally closed end of the three-way valve 18, and one end of the connecting pipe 5 49 passes through the boiler furnace body 11 and extends to the inside of the rotary chamber 111. The connecting pipe 5 49 fixedly connected to the boiler furnace body 11 is fixedly connected to the boiler furnace body 11 with a solenoid valve 410, and the gas outlet end of the solenoid valve 410 is arranged inside the rotary chamber 111. The solenoid valve 410 is a normally open valve, and gas can be injected into the rotary chamber 111 through the connecting pipe 5 49 and the solenoid valve 410; An inner ring 41 is fixedly connected inside the connecting tube five 49, and a gas storage component 43 and a plurality of spring-type telescopic rods 44 are fixedly connected to one side of a piston shaft 42 arranged inside the inner ring 41. One end of the gas storage component 43 storing a gas medium inside is rotatably connected to the barrier frame three 36, and a fixed plate two 45 is fixedly connected between the plurality of spring-type telescopic rods 44 and the connecting tube five 49.

[0026] Therefore, the airflow delivered to the inside of the connecting pipe 5 49 by the blower through the three-way valve 18 acts on the piston shaft 42. After the piston shaft 42 moves, the air inlet end of the solenoid valve 410 loses its blockage, and the airflow is discharged into the inside of the rotary chamber 111 through the solenoid valve 410; and two connecting pipes 47 are fixedly connected at a position on the outside of the air storage member 43 away from the inner ring 41, and air guide grooves 32 are provided on both sides of the barrier frame 2 31. One side of the sliding sealing plate 33 inserted on both sides of the barrier frame 2 31 is fixedly connected to a fixed plate 34, and the oil inlet of the pneumatic telescopic rod 35 fixedly connected to one side of the fixed plate 34 is fixedly connected to the adjacent connecting pipe 47. The piston shaft 42 is fixedly connected, so after the piston shaft 42 moves, the piston shaft 42 squeezes the gas storage part 43 so that the internal medium of the gas storage part 43 enters the inside of the pneumatic telescopic rod 35 through the connecting pipe four 47, and the pneumatic telescopic rod 35 whose outer wall is fixedly connected to the rotary chamber 111 extends to push the fixed plate 1 34 and the sliding sealing plate 33 to move, and the sliding sealing plate 33 is inserted into the interior of the blocking frame 2 31 to block the air guide groove 1 32. At this time, the partition frame composed of the blocking frame 2 31 and the two sliding sealing plates 33 enters a sealed state, and the partition frame divides the interior of the rotary chamber 111 into an upper cavity and a lower cavity. One end of a plurality of heat exchange tubes 1 14 is arranged inside the upper cavity, such as Figure 8 As shown, the barrier frame 36 is arranged inside the lower cavity. Under the action of the partition frame, the airflow entering the rotating chamber 111 can only enter the heat exchange tube 2 115 after passing through the filter 38. The airflow plays a role of backwashing and cleaning the filter 38. The airflow cleans the dust and impurities accumulated inside the heat exchange tube 2 115, ensuring the filtering effect of the filter 38 on the flue gas, and the maintenance work of the filter 38 can be completed quickly. Example

[0027] After the cleaning technology provided in the second embodiment is implemented for a period of time, the transmission assembly installed on the rotating chamber 111 is controlled to work, and the double-axis forward and reverse motor 311 fixedly installed on the rotating chamber 111 rotates forward. Since the barrier frame 36 is fixedly connected to the side of the double-axis forward and reverse motor 311 with a transmission shaft 1 315, a gear 4 314 is fixedly sleeved on the outer side of the transmission shaft 1 315 connected to the rotating chamber 111 for rotation. The gear 3 313 meshing with the gear 4 314 is fixedly installed with a transmission 312. The transmission 312 is fixedly connected to the rotating chamber 111 so that it cannot move and plays a role in speed change. The input end of the transmission 312 is fixedly connected to the output end of the double-axis forward and reverse motor 311 close to the barrier frame 3 36. The working double-axis forward and reverse motor 311 transmits rotational force to the transmission 312, and the transmission 312 changes the rotational force and acts on the gear 3 313. The rotating gear 313 drives the barrier frame 3 36 to rotate through the gear 4 314 and the transmission shaft 1 315. After the double-axis forward and reverse motor 311 works for a period of time, the double-axis forward and reverse motor 311 stops working, at which time the blocking frame 36 rotates a certain angle, and the air guide groove 2 39 provided on one side of the through hole 37 and opened on the blocking frame 36 rotates a certain angle, at which time the air guide groove 2 39 replaces the filter screen 38 and is aligned with the heat exchange tube 2 115; Because the output end of the dual-axis forward and reverse motor 311 away from the barrier frame 36 is fixedly connected to the transmission shaft 2 317, one end thereof extends into the diversion chamber 112, and the gear 5 318 fixedly sleeved on the outer side of the transmission shaft 2 317 is arranged inside the barrier frame 1 113, and the outer sides of the plurality of heat exchange tubes 2 115 near the gear 5 318 are all provided with gear 6 319, and the outer sides of the remaining plurality of heat exchange tubes 2 115 are all sleeved with gear 7 320, and the gear 7 320 meshes with the adjacent gear 6 319 to form a transmission relationship, and the plurality of gears 6 319 and the plurality of gears 6 319 are connected to each other. The gear seven 320 is rotatably connected to the diversion chamber 112 and can rotate on its own. Two adjacent gear six 319 are meshed together. When one of the multiple gear six 319 rotates, the remaining gear six 319 and the gear seven 320 meshed with the gear six 319 all rotate. One of the gear six 319 is meshed with the gear five 318. The dual-axis forward and reverse motor 311 is directly connected to the transmission shaft two 317. The transmission shaft two 317 rotates faster, and the gear five 318, the multiple gear six 319 and the multiple gear seven 320 rotate faster. During the working time of the dual-axis forward and reverse motor 311, the multiple cleaning racks 321 fixedly connected to the multiple gears 6 319 and the multiple gears 7 320 rotate multiple times. Because one end of the cleaning rack 321 extends to the inside of the adjacent heat exchange tube 2 115 and contacts the inner wall of the heat exchange tube 2 115, the cleaning rack 321 rotates multiple times to clean the inside of the heat exchange tube 2 115 and the dust and impurities attached to the inner wall of the heat exchange tube 2 115. The inside of the heat exchange tube 2 115 can be cleaned quickly to avoid the situation in which a large amount of dust attached to the inside of the heat exchange tube 2 115 affects the heat exchange efficiency between the heat exchange tube 2 115 and the water inside the boiler furnace body 11 when burning biomass fuel.

[0028] In addition, a plurality of baffles 46 are fixedly installed at a position away from the three-way valve 18 inside the connecting pipe 5, and a gas guide groove 3 48 is provided on one side of each of the plurality of baffles 46. The gas guide groove 3 48 is opened on the blocking frame 3 36. After the blocking frame 3 36 rotates, the gas guide groove 3 48 is staggered with the baffle 46. At this time, the inside of the connecting pipe 5 49 is connected with the inside of the blocking frame 3 36 through the gas guide groove 3 48. When the dual-axis forward and reverse motor 311 is suspended, the control solenoid valve 410 is closed. At this time, the airflow enters the interior of the barrier frame 36 through the air guide groove 2 39 and the air guide groove 3 48. At this time, the air guide groove 2 39 replaces the filter 38 and is aligned with the heat exchange tube 2 115. Therefore, the airflow enters the interior of the heat exchange tube 2 115 through the air guide groove 2 39 to blow out the dust and impurities cleaned by the cleaning frame 321, thereby ensuring the cleaning quality of the interior of the heat exchange tube 2 115 and reducing the time of the filter 38 being recoiled by the high-speed airflow, so that the filter 38 can be properly maintained and unblocked, thereby ensuring the service life of the filter 38.

[0029] Embodiment 4: After embodiment 3 is completed, the dual-axis forward and reverse motor 311 is controlled to reverse, so that the barrier frame 36 is reset, the blower is controlled to stop working, and the solenoid valve 410 is controlled to stop working and return to the normally open state. At this time, multiple spring-type telescopic rods 44 rebound and push the piston shaft 42 to reset, the air storage part 43 recovers to extract the internal medium of the pneumatic telescopic rod 35, and the sliding sealing plate 33 is reset.

[0030] The present application can quickly clean the dust and impurities attached to the inside of multiple heat exchange tubes 115 by installing a transmission component and a recoil cleaning component inside the boiler furnace body 11, thereby solving the problem of dust and impurity condensation on the inner wall of the heat exchange tube 115 caused by the use of biomass fuel.

[0031] In addition, such as Figure 1 As shown, a water inlet valve 12 and an exhaust valve 13 are fixedly installed on the top of the boiler furnace body 11 . The water inlet valve 12 is used to inject water into the boiler furnace body 11 , and the exhaust valve 13 is used to exhaust steam from the boiler furnace body 11 .

[0032] In addition, such as Figure 4 As shown, a plurality of pipe racks 29 are fixedly connected between the outer side of the connecting pipe 3 28 and the boiler furnace body 11 to install the connecting pipe 3 28 .

[0033] In addition, such as Fig.13 As shown, a brake 316 is installed on the outside of the transmission shaft 315, and the brake 316 is fixedly connected to the rotating chamber 111. After the dual-axis forward and reverse motor 311 has finished working, the brake 316 is controlled to brake the transmission shaft 315 to prevent the transmission shaft 315 and the brake 316 from moving, thereby ensuring the stability of the filter 38.

[0034] In addition, installing a human-machine interactive device to control the automatic pipeline cleaning boiler, and installing a supporting structure between the boiler furnace body 11, the fuel tank 21 and the ground are all existing well-known technologies and will not be described in detail here.

[0035] It will be apparent to those skilled in the art that the 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 the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A grate cleaning structure for a biomass boiler, comprising a boiler structure (1), wherein the boiler structure (1) comprises a boiler furnace body (11), a combustion furnace (110), a rotary chamber (111) and a diversion chamber (112), characterized in that: A plurality of heat exchange tubes 1 (114) and a plurality of heat exchange tubes 2 (115) are fixedly connected between the rotating chamber (111) and the flow diversion chamber (112); a barrier frame 1 (113) is fixedly connected between the flow diversion chamber (112) and the inner wall of the boiler furnace body (11); a pipeline dredging structure (3) is provided between the rotating chamber (111) and the flow diversion chamber (112); the pipeline dredging structure (3) comprises a barrier frame 2 (31), a dual-axis forward and reverse motor (311), a transmission assembly and a recoil cleaning assembly; the transmission assembly and the recoil cleaning assembly cooperate to clean the interior of the plurality of heat exchange tubes 2 (115); The recoil cleaning component comprises a barrier frame three (36), a plurality of heat exchange tubes two (115) are each provided with a through hole (37) at one end, a filter screen (38) is provided inside the through hole (37), a gas guide groove two (39) is provided on one side of the plurality of through holes (37), a transmission shaft one (315) is fixedly connected to a side of the barrier frame three (36) close to the dual-axis forward and reverse motor (311), and a speed change component is provided between the transmission shaft one (315) and the dual-axis forward and reverse motor (311); The transmission assembly comprises a transmission shaft 2 (317) and a gear 5 (318) fixedly mounted on the outer side of one end of the transmission shaft 2 (317); gear 6 (319) is arranged on the outer side of a plurality of heat exchange tubes 2 (115) close to the gear 5 (318); gear 7 (320) is mounted on the outer side of the remaining plurality of heat exchange tubes 2 (115); the plurality of gears 6 (319) and the plurality of gears 7 (320) are fixedly connected to a cleaning rack (321); one end of the cleaning rack (321) extends into the interior of an adjacent heat exchange tube 2 (115) and contacts the inner wall of the heat exchange tube 2 (115).

2. The biomass boiler grate cleaning structure according to claim 1 is characterized in that: The combustion furnace (110) is inserted into the boiler furnace body (11); the rotary chamber (111) is fixedly installed on one side of the boiler furnace body (11); the recoil cleaning assembly is arranged inside the rotary chamber (111); the diversion chamber (112) is fixedly installed on the other side of the boiler furnace body (11); one end of the combustion furnace (110) is fixedly connected to an air intake pipe (17); one end of the air intake pipe (17) is fixedly connected to a three-way valve (18); a water inlet valve (12) and an exhaust valve (13) are fixedly installed on the top of the boiler furnace body (11); an ash discharge port (16) is provided at one end of the boiler furnace body (11) away from the three-way valve (18); the ash discharge port (16) A door body (14) is inserted inside, and a plurality of mounting bolts (15) are threadedly connected between the door body (14) and the boiler body (11); the air inlet end of the three-way valve (18) is fixedly connected to a connecting pipe 1 (19); the end of the combustion furnace (110) away from the air inlet pipe (17) passes through the rotary chamber (111) and then extends to the inside of the diversion chamber (112); the combustion furnace (110) is fixedly connected to the boiler body (11), the rotary chamber (111) and the diversion chamber (112); a plurality of the heat exchange tubes 1 (114) are all arranged on the outside of the barrier frame 1 (113), and a plurality of the heat exchange tubes 2 (115) are all arranged inside the barrier frame 1 (113).

3. The biomass boiler grate cleaning structure according to claim 2 is characterized in that: A fuel preheating structure (2) is provided at the top of one side of the air intake pipe (17), the fuel preheating structure (2) comprising a fuel tank (21), a feed pipe (211) fixedly connected to the top of the fuel tank (21), a plurality of inclined guide pipes (212) fixedly connected between one side of the fuel tank (21) and the air intake pipe (17), and two air guide boxes (22) rotatably connected at both ends of the fuel tank (21), a plurality of air guide boxes (23) fixedly connected between the two air guide boxes (22), and one end of the air guide box (23) is in contact with the inner wall of the fuel tank (21).

4. The biomass boiler grate cleaning structure according to claim 3 is characterized by: One end of the air guide box (22) away from the boiler furnace body (11) is rotatably connected to the second smoke exhaust pipe (210), and one side of the air guide box (22) close to the boiler furnace body (11) is fixedly connected to the second connecting pipe (27), and one end of the second connecting pipe (27) is rotatably connected to the third connecting pipe (28), and one side of the diversion chamber (112) is fixedly connected to the first smoke exhaust pipe (116), and one end of the first smoke exhaust pipe (116) extends to the outside of the boiler furnace body (11) and is connected to the third connecting pipe (28). ) are fixedly connected, a plurality of pipe racks (29) are fixedly connected between the outer side of the connecting pipe (28) and the boiler furnace body (11); a gear (26) is fixedly sleeved on the outer side of the connecting pipe (27), the gear (26) is meshed with a gear (25), a drive motor (24) is provided on one side of the gear (25), the drive motor (24) is fixedly connected to the boiler furnace body (11), and the gear (25) is fixedly sleeved on the output end of the drive motor (24).

5. The biomass boiler grate cleaning structure according to claim 2 is characterized by: A state control structure (4) is provided between the normally closed end of the three-way valve (18) and the recoil cleaning assembly. The state control structure (4) comprises a connecting pipe (49) fixedly connected to the normally closed end of the three-way valve (18), an inner ring (41) fixedly connected inside the connecting pipe (49), a piston shaft (42) provided inside the inner ring (41), and an air storage member (43) and a plurality of spring-type telescopic rods (44) fixedly connected to one side of the piston shaft (42). The plurality of spring-type telescopic rods (44) are all fixedly connected to the connecting pipe (49) with a fixing plate (45). The connecting pipe (49) passes through one end of the boiler furnace body (11) and extends into the interior of the rotary chamber (111). An electromagnetic valve (410) is fixedly connected between the outer side of the connecting pipe (49) and the boiler furnace body (11). The outer side of the air storage member (43) is fixedly connected to a position away from the inner ring (41). There are two connecting pipes four (47) connected, air guide grooves one (32) are provided on both sides of the barrier frame two (31), sliding sealing plates (33) are inserted on both sides of the barrier frame two (31), one side of the sliding sealing plate (33) is fixedly connected to a fixed plate one (34), one side of the fixed plate one (34) is fixedly connected to a pneumatic telescopic rod (35), the outer wall of the pneumatic telescopic rod (35) is fixedly connected to the rotary chamber (111), the oil inlet of the pneumatic telescopic rod (35) is fixedly connected to the adjacent connecting pipe four (47), a plurality of baffles (46) are fixedly installed at a position away from the three-way valve (18) inside the connecting pipe five (49), one side of the plurality of baffles (46) is provided with air guide grooves three (48), the connecting pipe five (49) is rotatably connected to the barrier frame three (36), and the air guide grooves three (48) are provided on the barrier frame three (36).

6. The biomass boiler grate cleaning structure according to claim 1, characterized in that: The barrier frame 2 (31) and the double-axis forward and reverse motor (311) are both fixedly installed inside the rotating chamber (111), the through hole (37) is opened on the barrier frame 3 (36), the filter screen (38) is fixedly connected to the barrier frame 3 (36), the air guide groove 2 (39) is opened on the barrier frame 3 (36), the transmission shaft 1 (315) is rotatably connected to the rotating chamber (111), one end of the transmission shaft 2 (317) extends to the inside of the diversion chamber (112), the gear 5 (318) is arranged inside the barrier frame 1 (113), a plurality of gears 6 (319) and a plurality of gears 7 (320) are rotatably connected to the diversion chamber (112), the gear 7 (320) is meshed with an adjacent gear 6 (319), one of the gears 6 (319) is meshed with the gear 5 (318), and two adjacent gears 6 (319) are meshed together.

7. The biomass boiler grate cleaning structure according to claim 1 is characterized by: The speed change assembly comprises a brake (316) installed on the outside of the transmission shaft 1 (315), the brake (316) is fixedly connected to the rotating chamber (111), the outer fixed sleeve of the transmission shaft 1 (315) is provided with a gear 4 (314), the gear 4 (314) is meshed with a gear 3 (313), the gear 3 (313) is fixedly installed with a transmission (312), a short plate is fixedly connected between the transmission (312) and the rotating chamber (111), the output end of the dual-axis forward and reverse motor (311) close to the blocking frame 3 (36) is fixedly connected to the input end of the transmission (312), and the output end of the dual-axis forward and reverse motor (311) away from the blocking frame 3 (36) is fixedly connected to the transmission shaft 2 (317).

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