Material locking and backfire preventing device of biomass boiler

Abstract

The utility model relates to the technical field of biomass boilers, in particular to a material locking and backfire preventing device of a biomass boiler, which not only can quantitatively convey biomass into the boiler according to the combustion efficiency of the boiler and improve the use flexibility of the device, but also can avoid backfire through double blocking of locking air and a fire damper. Comprising a biomass boiler which is installed on the ground. The biomass boiler further comprises a quantitative conveying mechanism, an anti-backfire mechanism, a direct conveying mechanism, a driving mechanism and an air supply mechanism, the quantitative conveying mechanism is installed on the biomass boiler and conveys biomass into the anti-backfire mechanism in a quantitative mode, and the anti-backfire mechanism is installed on the quantitative conveying mechanism and avoids backfire; the direct conveying mechanism is installed on the anti-backfire mechanism and conveys biomass into the biomass boiler, the driving mechanism is installed on the direct conveying mechanism and drives the direct conveying mechanism to convey the biomass, and the air supply mechanism is installed on the driving mechanism and accelerates conveying of the biomass to avoid backfire.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass boilers, in particular to a material locking and backfire prevention device for a biomass boiler. Background Art

[0002] The existing biomass boiler locking and anti-backfire device, such as the biomass boiler locking and anti-backfire device disclosed in the utility model patent application number 201320808306.0, has a main structure including a feed hopper, an inclined drop section is provided in the feed hopper, and the inclined drop section is provided with a leak-proof baffle, a material transfer roller, a material broadcasting roller and a feeder in sequence from top to bottom. The end of the feeder extends into the furnace cavity of the biomass boiler, and the material transfer roller and the material broadcasting roller pass through The transmission chain is connected to the rotating shaft of the grate in the biomass boiler; when in use, the biomass material is added to the feed hopper, and the biomass fuel in the feed hopper enters the material transfer roller through the leak-proof baffle, drives the transmission chain through the transmission shaft, and the transmission chain drives the material transfer roller and the material broadcasting roller, rotates the material transfer roller, and transports the material to the material broadcasting roller. The material broadcasting roller transports the material to the feeder, and the biomass fuel is quickly transported to the grate in the boiler furnace by its own weight to prevent the material from catching fire in the feed hopper.

[0003] However, most of the existing locking and anti-backfire devices are difficult to control the feed rate, lack flexibility in use, and are difficult to coordinate with the combustion efficiency of the boiler. Moreover, most of the existing anti-backfire devices rely solely on a single anti-backfire method, making it difficult to achieve a good backfire prevention effect. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a biomass boiler material locking and anti-backfire device that can not only quantitatively transport biomass into the filter according to the combustion efficiency of the boiler, thereby improving the flexibility of the device, but also avoid the occurrence of backfire by locking the wind and the fire baffle.

[0005] The utility model discloses a biomass boiler locks material anti -backfire device, including biomass boiler, biomass boiler installs on the ground, still include ration conveying mechanism, anti -backfire mechanism, straight delivery mechanism, drive mechanism and air supply mechanism, ration conveying mechanism installs on the biomass boiler and will biomass ration delivery to the anti -backfire mechanism, anti -backfire mechanism installs on ration conveying mechanism and avoids backfire, straight delivery mechanism installs on the anti -backfire mechanism and will biomass delivery to the biomass boiler, drive mechanism installs on straight delivery mechanism and drives straight delivery mechanism delivery biomass, air supply mechanism installs on drive mechanism and accelerates the delivery of biomass and avoids backfire, the staff will biomass delivery to ration conveying mechanism, and ration conveying mechanism will biomass ration delivery to the anti -backfire mechanism according to the combustion efficiency of biomass boiler, and the anti -backfire mechanism will biomass delivery to straight delivery mechanism, prevents biomass boiler backfire simultaneously, starts drive mechanism, and drive mechanism drives straight delivery mechanism and will the biomass of delivery delivery to the biomass boiler and burns, and drive mechanism drives air supply mechanism and gas, accelerates the delivery of biomass in the anti -backfire mechanism and straight delivery mechanism and avoids backfire.

[0006] Preferably, the ration conveying mechanism comprises a base, a first conveying cylinder, a feeding hopper, a servo motor, a first speed reducer and a first transmission shaft, the base is installed on the biomass boiler, the first conveying cylinder is installed on the base, the first conveying cylinder is internally provided with a cavity, the bottom end of the feeding hopper is in communication with the top end of the first conveying cylinder, the servo motor is installed on the base, the first speed reducer is installed on the base, the first transmission shaft is rotatably installed in the cavity of the first conveying cylinder and is longitudinally connected with the first speed reducer, and the first auger is installed on the first transmission shaft; the staff delivers biomass particles into the feeding hopper, the biomass particles enter the cavity of the first conveying cylinder, the servo motor is started, the servo motor drives the first transmission shaft to rotate through the first speed reducer, the first transmission shaft drives the first auger to rotate, the first auger drives the biomass particles to be conveyed into the anti-backfire mechanism, the rotation speed of the servo motor is matched with the combustion efficiency of the biomass boiler, and the biomass particles are ration conveyed.

[0007] Preferably, the anti-backfire mechanism comprises a connecting cylinder, a rotating shaft, a fireproof plate, a clamping strip, a spring, a sleeve, a fixing bolt and a blocking rod, the top end of the connecting cylinder is in communication with the bottom end of the first conveying cylinder, the rotating shaft is rotatably installed in the connecting cylinder, the fireproof plate is installed on the rotating shaft, the clamping strip is installed on the rotating shaft, the spring is installed on the connecting cylinder and connected with the clamping strip, the sleeve is installed on the connecting cylinder and has a positioning hole, the fixing bolt is inserted into the positioning hole of the sleeve, and the blocking rod is installed in the connecting cylinder; when the biomass particles are conveyed from the first conveying cylinder into the connecting cylinder, they fall downward and hit the fireproof plate, the fireproof plate drives the rotating shaft to rotate downward, which facilitates the biomass particles to pass through the connecting cylinder into the straight conveying mechanism, then the spring pushes the rotating shaft to reverse through the clamping strip, the rotating shaft drives the fireproof plate to reset to avoid the fire entering into the first conveying cylinder, and the rotating angle of the fireproof plate is limited by the blocking rod, the fixing bolt is inserted into the positioning hole of the sleeve when the conveying is stopped, the rotating shaft is prevented from rotating, and backfire is avoided.

[0008] Preferably, the straight conveying mechanism comprises a second conveying cylinder, a connecting shaft, a second auger and a first sprocket, the second conveying cylinder is installed on the base, the second conveying cylinder is internally provided with an inner cavity, the second conveying cylinder is in communication with the biomass boiler and the connecting cylinder, the connecting shaft is rotatably installed on the second conveying cylinder, the second auger is installed on the connecting shaft and located in the inner cavity of the second conveying cylinder, and the first sprocket is installed on the connecting shaft; the driving mechanism drives the first sprocket to rotate, the first sprocket drives the connecting shaft and the second auger to rotate, the biomass particles in the connecting cylinder enter into the inner cavity of the second conveying cylinder, and the second auger drives the biomass particles to be conveyed into the biomass boiler to be combusted.

[0009] Preferably, the driving mechanism comprises a first motor, a second speed reducer, a second transmission shaft, a second sprocket and a chain, the bottom end of the first motor is connected with the top end of the base, the bottom end of the second speed reducer is connected with the top end of the base, the second transmission shaft is installed on the second speed reducer, the second sprocket is installed on the second transmission shaft, and the chain is transmissionally installed between the first sprocket and the second sprocket; the first motor is started, the first motor drives the second transmission shaft to rotate through the second speed reducer, the second transmission shaft drives the second sprocket to rotate, and the second sprocket drives the first sprocket to rotate through the chain.

[0010] Preferably, the air feeding mechanism comprises a third transmission shaft, a pump body, a suction pipe, a first air pipe, two groups of first nozzles, a second air pipe and two groups of second nozzles, the third transmission shaft is installed on the second speed reducer, the pump body is installed on the third transmission shaft, the suction pipe is installed on the pump body, the first air pipe is installed on the pump body, the two groups of first nozzles are both installed in the connecting cylinder and communicate with the inside of the first air pipe, the second air pipe communicates with the inside of the first air pipe, and the two groups of second nozzles are both installed in the inner cavity of the second conveying cylinder and communicate with the inside of the second air pipe; the second speed reducer drives the third transmission shaft to rotate, the third transmission shaft drives the pump body to suck air through the suction pipe, the pump body conveys compressed air to the two groups of first nozzles through the first air pipe, the two groups of first nozzles spray out air, which not only accelerates the biomass particles to pass through the connecting cylinder, but also avoids the flame from entering the connecting cylinder, meanwhile, the first air pipe conveys compressed air to the two groups of second nozzles through the second air pipe, and the two groups of second nozzles accelerate the biomass particles to enter the biomass boiler and avoid the flame from entering the inner cavity of the second conveying cylinder.

[0011] Compared with the prior art, the biomass is fed into the quantitative conveying mechanism by the staff, the biomass is quantitatively conveyed into the anti-backfire mechanism according to the combustion efficiency of the biomass boiler by the quantitative conveying mechanism, the biomass is conveyed into the straight conveying mechanism by the anti-backfire mechanism, and the biomass boiler is prevented from backfiring, the driving mechanism is started, the driving mechanism drives the straight conveying mechanism to convey the conveyed biomass into the biomass boiler for combustion, and the driving mechanism drives the air feeding mechanism to feed air, so that the biomass is conveyed in the anti-backfire mechanism and the straight conveying mechanism while backfiring is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is the axonometric structural schematic diagram of the utility model;

[0013] Figure 2 is the partial enlarged axonometric structural schematic diagram of the quantitative conveying mechanism of the utility model;

[0014] Figure 3 is the partial enlarged sectional axonometric structural schematic diagram of the quantitative conveying mechanism, the straight conveying mechanism and the air feeding mechanism of the utility model;

[0015] Figure 4 is the partial enlarged sectional axonometric structural schematic diagram of the anti-backfire mechanism and the air feeding mechanism of the utility model;

[0016] Figure 5 is the partial enlarged sectional axonometric structural schematic diagram of the driving mechanism of the utility model.

[0017] Markings in the attached figure: 01, biomass boiler; 02, quantitative conveying mechanism; 21, base; 22, first conveying cylinder; 23, upper hopper; 24, servo motor; 25, first reducer; 26, first transmission shaft; 27, first auger; 03, anti-backfire mechanism; 31, connecting cylinder; 32, rotating shaft; 33, fire baffle; 34, clamping strip; 35, spring; 36, sleeve; 37, fixing bolt; 38, baffle; 04, direct conveying Mechanism; 41. Second conveying cylinder; 42. Connecting shaft; 43. Second auger; 44. First sprocket; 05. Driving mechanism; 51. Electric motor; 52. Second reducer; 53. Second transmission shaft; 54. Second sprocket; 55. Chain; 06. Air supply mechanism; 61. Third transmission shaft; 62. Pump body; 63. Exhaust pipe; 64. First air supply pipe; 65. First nozzle; 66. Second air supply pipe; 67. Second nozzle. DETAILED DESCRIPTION

[0018] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0019] Example 1

[0020] The utility model is a biomass boiler locking material anti-backfire device, comprising a biomass boiler 01, which is installed on the ground; and further comprising a quantitative conveying mechanism 02, an anti-backfire mechanism 03, a direct conveying mechanism 04, a driving mechanism 05 and an air supply mechanism 06. The quantitative conveying mechanism 02 is installed on the biomass boiler 01 and quantitatively conveys biomass into the anti-backfire mechanism 03. The anti-backfire mechanism 03 is installed on the quantitative conveying mechanism 02 and avoids backfire. The direct conveying mechanism 04 is installed on the anti-backfire mechanism 03 and conveys biomass into the biomass boiler 01. The driving mechanism 05 is installed on the direct conveying mechanism 04 and drives the direct conveying mechanism 04 to convey biomass. The air supply mechanism 06 is installed on the driving mechanism 05 and accelerates the conveying of biomass. To avoid backfire; the quantitative conveying mechanism 02 includes a base 21, a first conveying cylinder 22, an upper hopper 23, a servo motor 24, a first reducer 25 and a first transmission shaft 26. The base 21 is installed on the biomass boiler 01, the first conveying cylinder 22 is installed on the base 21, and a cavity is provided inside the first conveying cylinder 22. The bottom end of the upper hopper 23 is connected to the top end of the first conveying cylinder 22. The servo motor 24 is installed on the base 21, the first reducer 25 is installed on the base 21, the first transmission shaft 26 is rotatably installed in the cavity of the first conveying cylinder 22 and is longitudinally connected to the first reducer 25. The first auger 27 is installed on the first transmission shaft 26; the anti-backfire mechanism 03 includes a connecting cylinder 31, a rotating shaft 32, a fire baffle 33, a card strip 34, a spring 35, a sleeve 36, a fixing bolt 37 and a baffle 38. The top of the connecting cylinder 31 is internally connected to the bottom end of the first conveying cylinder 22. The rotating shaft 32 is rotatably mounted in the connecting cylinder 31. The fire baffle 33 is mounted on the rotating shaft 32. The card strip 34 is mounted on the rotating shaft 32. The spring 35 is mounted on the connecting cylinder 31 and connected to the card strip 34. The sleeve 36 is mounted on the connecting cylinder 31 and has a positioning hole. The fixing bolt 37 is inserted into the positioning hole of the sleeve 36. The baffle 38 is mounted in the connecting cylinder 31; the direct transmission mechanism 04 includes a second conveying cylinder 41, a connecting shaft 42, a second auger 43 and a first sprocket 44. The second conveying cylinder 41 is mounted on the base 21. The interior of the second conveying cylinder 41 is provided with an inner cavity. The second conveying cylinder 41 is connected to the inside of the biomass boiler 01 and the connecting cylinder 31. The connecting shaft 42 is rotatably mounted on the second conveying cylinder 41. The second auger 43 is mounted on the connecting shaft 42 and is located in the inner cavity of the second conveying cylinder 41. The first sprocket 44 is mounted on the connecting shaft 42; the driving mechanism 05 includes a first motor 51, a second reducer 52, a second transmission shaft 53, a second sprocket 54 and a chain 55. The bottom end of the first motor 51 is connected to the top of the base 21, the bottom end of the second reducer 52 is connected to the top of the base 21, the second transmission shaft 53 is mounted on the second reducer 52, the second sprocket 54 is mounted on the second transmission shaft 53, and the chain 55 is transmission-installed between the first sprocket 44 and the second sprocket 54;When it is working, first, the staff throws the biomass particles into the upper hopper 23, and the biomass particles enter the cavity of the first conveying cylinder 22, and starts the servo motor 24. The servo motor 24 drives the first transmission shaft 26 to rotate through the first reducer 25, and the first transmission shaft 26 drives the first auger 27 to rotate. The first auger 27 drives the biomass particles to be transported to the connecting cylinder 31. The speed of the servo motor 24 matches the combustion efficiency of the biomass boiler 01, and the biomass particles are quantitatively transported. When the biomass particles are transported from the first conveying cylinder 22 to the connecting cylinder 31, they fall down and hit the fire baffle 33. The fire baffle 33 drives the rotating shaft 32 to rotate downward, making it convenient for the biomass particles to pass through the connecting cylinder 31 and enter the direct transport mechanism 04. Then the spring 35 pushes the rotating shaft through the card bar 34 The shaft 32 rotates in reverse, and the fire baffle 33 is reset to prevent flames from entering the first conveying cylinder 22. The fire baffle 33 is limited by a stop lever 38. When conveying stops, the fixing bolt 37 is inserted into the positioning hole of the sleeve 36 to prevent the shaft 32 from rotating and preventing backfire. The first motor 51 is started, and the first motor 51 drives the second transmission shaft 53 to rotate via the second reducer 52. The second transmission shaft 53 drives the second sprocket 54 to rotate. The second sprocket 54 drives the first sprocket 44 via the chain 55. The first sprocket 44 drives the connecting shaft 42 and the second auger 43 to rotate. The biomass pellets in the connecting cylinder 31 enter the inner cavity of the second conveying cylinder 41. The rotation of the second auger 43 drives the biomass pellets to be transported to the biomass boiler 01 for combustion.

[0021] Example 2

[0022] like Figures 1 to 5As shown, a biomass boiler locking and anti-backfire device of the present invention is based on Example 1; the air supply mechanism 06 includes a third transmission shaft 61, a pump body 62, an air extraction pipe 63, a first air delivery pipe 64, two groups of first nozzles 65, a second air delivery pipe 66 and two groups of second nozzles 67, the third transmission shaft 61 is installed on the second reducer 52, the pump body 62 is installed on the third transmission shaft 61, the air extraction pipe 63 is installed on the pump body 62, the first air delivery pipe 64 is installed on the pump body 62, the two groups of first nozzles 65 are installed in the connecting tube 31 and are connected to the inside of the first air delivery pipe 64, the second air delivery pipe 66 is connected to the inside of the first air delivery pipe 64, and the two groups of second nozzles 67 are installed in the inner cavity of the second conveying cylinder 41 and are connected to the second conveying cylinder 41. The air pipe 66 is internally connected; when it is working, first, the staff throws the biomass particles into the upper hopper 23, and the biomass particles enter the cavity of the first conveying cylinder 22, and starts the servo motor 24. The servo motor 24 drives the first transmission shaft 26 to rotate through the first reducer 25, and the first transmission shaft 26 drives the first auger 27 to rotate. The first auger 27 drives the biomass particles to be transported to the connecting cylinder 31. The speed of the servo motor 24 matches the combustion efficiency of the biomass boiler 01, and the biomass particles are quantitatively transported. When the biomass particles are transported from the first conveying cylinder 22 to the connecting cylinder 31, they fall down and hit the fire baffle 33. The fire baffle 33 drives the rotating shaft 32 to rotate downward, which facilitates the biomass particles to pass through the connecting cylinder 31 and enter the straight The first sprocket 54 rotates and the second sprocket 54 rotates, and the second sprocket 54 drives the first sprocket 44 to rotate through the chain 55. The first sprocket 44 drives the connecting shaft 42 and the second auger 43 to rotate, and the biomass particles in the connecting cylinder 31 enter the second conveying cylinder 22. In the inner cavity of the delivery tube 41, the second auger 43 rotates to drive the biomass pellets to be transported to the biomass boiler 01 for combustion. At the same time, the second reducer 52 drives the third transmission shaft 61 to rotate. The third transmission shaft 61 drives the pump body 62 to exhaust air through the exhaust pipe 63. The pump body 62 delivers the compressed air through the first air pipe 64 to the two groups of first nozzles 65. The two groups of first nozzles 65 spray out the air, which accelerates the biomass pellets to pass through the connecting tube 31 and prevents the flame from entering the connecting tube 31. At the same time, the first air pipe 64 delivers the compressed air through the second air pipe 66 to the two groups of second nozzles 67. The two groups of second nozzles 67 accelerate the biomass pellets to enter the biomass boiler 01 and prevent the flame from entering the inner cavity of the second delivery tube 41.

[0023] The servo motor 24, the first reducer 25, the first electric motor 51, the second reducer 52 and the pump body 62 of the utility model are purchased on the market. Technicians in this industry only need to install and operate them according to the accompanying instruction manuals without the need for creative work by technicians in this field.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A biomass boiler material locking and backfire prevention device, comprising a biomass boiler (01), wherein the biomass boiler (01) is installed on the ground; characterized in that: The invention also includes a quantitative conveying mechanism (02), an anti-backfire mechanism (03), a direct transport mechanism (04), a driving mechanism (05) and an air supply mechanism (06). The quantitative conveying mechanism (02) is installed on the biomass boiler (01) and quantitatively transports biomass into the anti-backfire mechanism (03). The anti-backfire mechanism (03) is installed on the quantitative conveying mechanism (02) and prevents backfire. The direct transport mechanism (04) is installed on the anti-backfire mechanism (03) and transports biomass into the biomass boiler (01). The driving mechanism (05) is installed on the direct transport mechanism (04) and drives the direct transport mechanism (04) to transport biomass. The air supply mechanism (06) is installed on the driving mechanism (05) and accelerates the transport of biomass to prevent backfire.

2. A biomass boiler material locking and anti-backfire device according to claim 1, characterized in that: The quantitative conveying mechanism (02) comprises a base (21), a first conveying cylinder (22), an upper hopper (23), a servo motor (24), a first reducer (25) and a first transmission shaft (26); the base (21) is mounted on the biomass boiler (01); the first conveying cylinder (22) is mounted on the base (21); a cavity is provided inside the first conveying cylinder (22); the bottom end of the upper hopper (23) is connected to the top end of the first conveying cylinder (22); the servo motor (24) is mounted on the base (21); the first reducer (25) is mounted on the base (21); the first transmission shaft (26) is rotatably mounted in the cavity of the first conveying cylinder (22) and is longitudinally connected to the first reducer (25); and the first auger (27) is mounted on the first transmission shaft (26).

3. A biomass boiler material locking and anti-backfire device according to claim 2, characterized in that: The backfire prevention mechanism (03) comprises a connecting cylinder (31), a rotating shaft (32), a fire baffle (33), a clamping strip (34), a spring (35), a sleeve (36), a fixing bolt (37) and a blocking rod (38). The top end of the connecting cylinder (31) is internally connected to the bottom end of the first conveying cylinder (22). The rotating shaft (32) is rotatably mounted in the connecting cylinder (31). The fire baffle (33) is mounted on the rotating shaft (32). The clamping strip (34) is mounted on the rotating shaft (32). The spring (35) is mounted on the connecting cylinder (31) and connected to the clamping strip (34). The sleeve (36) is mounted on the connecting cylinder (31) and has a positioning hole. The fixing bolt (37) is inserted into the positioning hole of the sleeve (36). The blocking rod (38) is mounted in the connecting cylinder (31).

4. A biomass boiler material locking and anti-backfire device according to claim 3, characterized in that: The direct transport mechanism (04) comprises a second conveying cylinder (41), a connecting shaft (42), a second auger (43) and a first sprocket (44). The second conveying cylinder (41) is mounted on the base (21). An inner cavity is provided inside the second conveying cylinder (41). The second conveying cylinder (41) is communicated with the interior of the biomass boiler (01) and the connecting cylinder (31). The connecting shaft (42) is rotatably mounted on the second conveying cylinder (41). The second auger (43) is mounted on the connecting shaft (42) and is located in the inner cavity of the second conveying cylinder (41). The first sprocket (44) is mounted on the connecting shaft (42).

5. A biomass boiler material locking and backfire prevention device according to claim 4, characterized in that: The driving mechanism (05) comprises a first motor (51), a second speed reducer (52), a second transmission shaft (53), a second sprocket (54) and a chain (55). The bottom end of the first motor (51) is connected to the top end of the base (21), the bottom end of the second speed reducer (52) is connected to the top end of the base (21), the second transmission shaft (53) is installed on the second speed reducer (52), the second sprocket (54) is installed on the second transmission shaft (53), and the chain (55) is installed between the first sprocket (44) and the second sprocket (54).

6. A biomass boiler material locking and backfire prevention device according to claim 5, characterized in that: The air supply mechanism (06) comprises a third transmission shaft (61), a pump body (62), an air extraction pipe (63), a first air delivery pipe (64), two groups of first nozzles (65), a second air delivery pipe (66) and two groups of second nozzles (67). The third transmission shaft (61) is mounted on the second reducer (52), the pump body (62) is mounted on the third transmission shaft (61), the air extraction pipe (63) is mounted on the pump body (62), the first air delivery pipe (64) is mounted on the pump body (62), the two groups of first nozzles (65) are both mounted in the connecting cylinder (31) and communicate with the interior of the first air delivery pipe (64), the second air delivery pipe (66) is communicated with the interior of the first air delivery pipe (64), and the two groups of second nozzles (67) are both mounted in the inner cavity of the second delivery cylinder (41) and communicate with the interior of the second air delivery pipe (66).

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