Automatic ignition device of biomass fuel boiler

Abstract

The utility model provides an automatic ignition device of a biomass fuel boiler, which relates to the technical field of ignition devices and comprises an air blower, a connecting pipe, a ceramic coating, a through hole, an electric heating pipe, a telescopic shielding mechanism, a sleeve, an annular air outlet cavity and a controller. An electric heating pipe is arranged in a connecting pipe, an air blower communicated with the connecting pipe blows air to take away heat of the electric heating pipe to form hot air, the hot air is exhausted from a through hole and then exhausted along an annular air outlet cavity between the inner wall of a sleeve and the outer wall of the connecting pipe, the annular air outlet cavity reduces the cross section size of a hot air exhaust channel, and then the wind strength is improved; and after air exhaust is finished, the controller controls the air blower and the electric heating pipe to stop working and controls the telescopic shielding mechanism to start, the movable end of the telescopic shielding mechanism shields the inner side end of the through hole after stretching, tempering or impurities are effectively prevented from entering the connecting pipe, and follow-up use of the ignition device is prevented from being affected.

Description

Technical Field

[0001] This utility model relates to the field of ignition device technology, and in particular to an automatic ignition device for a biomass fuel boiler. Background Technology

[0002] A biomass fuel boiler is a type of boiler that uses biomass energy as fuel. The most basic operation when using a boiler is to ignite it.

[0003] In existing automatic ignition devices, the high temperature output by the ignition device causes the biomass fuel to burn. After the biomass fuel burns, the residue contains some non-combustible impurities and ash. These impurities may enter the automatic ignition device in reverse, affecting the use of subsequent ignition devices. At the same time, under atmospheric pressure, the flame in the biomass fuel boiler may backfire, causing damage to the inside of the ignition device and affecting the use of subsequent ignition devices. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic ignition device for biomass fuel boilers, which has the advantage of preventing backfire or impurities from entering the connecting pipe. It solves the technical problem that impurities may enter the automatic ignition device in reverse, and the flame in the biomass fuel boiler may backfire, causing damage to the inside of the ignition device.

[0005] This utility model provides an automatic ignition device for a biomass fuel boiler, comprising:

[0006] The blower has a detachable connecting pipe at its output end, and the inner wall of the connecting pipe is coated with a ceramic coating.

[0007] The end of the connecting pipe furthest from the blower is sealed.

[0008] A through hole is provided in the middle circumference of the outer wall of the connecting pipe;

[0009] An electric heating element is fixedly installed on the inner wall of the connecting pipe near the blower.

[0010] A telescopic shielding mechanism is fixedly installed on the inner wall of the connecting pipe away from the blower, and the movable end of the telescopic shielding mechanism extends and shields the inner end of the through hole.

[0011] The sleeve is detachably assembled to the outer wall of the connecting pipe at the end near the blower, and the through hole is located inside the sleeve;

[0012] An annular air outlet cavity is formed between the inner wall of the sleeve and the outer wall of the connecting pipe;

[0013] The controller is electrically connected to the telescopic shielding mechanism, the blower, and the heating element, respectively.

[0014] As a further optimization, in order to block the inner end of the through hole when needed to prevent backfire or impurities from entering after ignition, the telescopic blocking mechanism includes:

[0015] An electric push rod has one end fixedly connected to the inner wall of the connecting pipe away from the blower, and the other end of the electric push rod is fixedly connected to a cylinder.

[0016] The electric push rod is electrically connected to the controller, and when the movable end of the electric push rod extends, it causes the cylinder to block the inner end of the through hole.

[0017] As a further optimization, in order to improve the shielding effect of the outer wall of the cylinder on the inner end of the through hole, a rubber layer is attached and fixed to the outer wall of the curved surface of the cylinder.

[0018] The rubber layer covers the inner end of the through hole.

[0019] As a further optimization, in order to improve the mechanical strength of the annular air outlet cavity, annular reinforcing ribs are uniformly fixedly assembled on the inner wall of the annular air outlet cavity along its length.

[0020] As a further optimization, in order to guide the hot air discharged from the through hole so that the hot air is discharged along the annular air outlet cavity, and to reduce the cross-sectional size of the hot air discharge channel, thereby increasing the airflow intensity, the sleeve includes:

[0021] A cylindrical tube is fixedly connected to a flange at one end near the blower, and a first countersunk bolt is fixedly connected between the flange and the outer wall of the connecting pipe.

[0022] As a further optimization, in order to shield the end of the annular air outlet cavity, reduce the entry of impurities, and provide support, a shielding metal mesh is detachably installed on the inner wall of the annular air outlet cavity between the sleeve and the connecting pipe at the end away from the blower.

[0023] As a further optimization, to reduce the entry of impurities and improve the stability of the supporting annular air outlet cavity, the shielding metal mesh includes:

[0024] The outer ring is coaxially abutted against the end of the sleeve furthest from the blower;

[0025] The outer ring and the sleeve are evenly screwed with second countersunk bolts at the end away from the blower;

[0026] The inner wall of the outer ring is fixedly fitted with an annular metal mesh, and the inner ring surface of the annular metal mesh is fixedly fitted to the outer wall of the end of the connecting pipe away from the blower.

[0027] As a further optimization, in order to generate heat after being powered on, and to cooperate with the blower to produce high-temperature hot air for fuel ignition, the electric heating element includes:

[0028] A ceramic winding spool, with an electric heating wire attached to its outer wall;

[0029] The heating wire is electrically connected to the controller;

[0030] Both ends of the ceramic winding drum are fixedly fitted with annular mounting blocks.

[0031] A connecting block is fixedly assembled on the outer wall of the annular mounting block, and the outer end of the connecting block is fixedly connected to the inner wall of the connecting pipe near the blower.

[0032] As a further optimization, in order to facilitate the installation and fixing of the device on the platform or bracket and to facilitate the ignition of the device in a biomass fuel boiler, connecting ear plates are uniformly fixedly installed on the rear edge of the outer wall of the blower.

[0033] As a further optimization, to facilitate the installation and disassembly of the connecting pipe and the blower output end, a connecting structure is installed between the blower output end and the end of the connecting pipe near the blower, comprising:

[0034] The first connecting ring is fixedly sleeved on the outer wall of the connecting pipe near the edge of the blower;

[0035] The second connecting ring is fixedly sleeved at the edge of the blower's output end;

[0036] A rubber ring is held between the first connecting ring and the second connecting ring;

[0037] Fixed bolts are evenly screwed between the first connecting ring and the second connecting ring, and the bolts of the fixed bolts pass through the rubber rings.

[0038] This utility model provides an improved automatic ignition device for biomass fuel boilers, which has the following improvements and advantages compared with the prior art:

[0039] The device has an electric heating element installed inside the connecting pipe. A blower connected to the connecting pipe blows air to remove the heat from the electric heating element, forming hot air. The hot air is discharged from the through hole and then discharged along the annular air outlet cavity between the inner wall of the sleeve and the outer wall of the connecting pipe. The annular air outlet cavity reduces the cross-sectional size of the hot air discharge channel, thereby increasing the airflow intensity. After the exhaust is completed, the controller stops the blower and the electric heating element and activates the telescopic shielding mechanism. The movable end of the telescopic shielding mechanism extends and blocks the inner end of the through hole, effectively preventing backfire or impurities from entering the connecting pipe and avoiding affecting the subsequent use of the ignition device. Attached Figure Description

[0040] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the structure of this utility model;

[0042] Figure 2 This is a partial cross-sectional view of the retracted state of the telescopic shielding mechanism of this utility model.

[0043] Figure 3 This is a partial structural schematic cross-sectional view of the telescopic shielding mechanism of this utility model in its extended state.

[0044] Figure 4 This is a schematic diagram of the shielding metal mesh structure of this utility model;

[0045] Figure 5 This is a schematic diagram of the electric heating tube structure of this utility model;

[0046] Figure 6 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0047] Explanation of reference numerals in the attached figures:

[0048] 1-Blower, 2-Connecting pipe, 3-Sleeve, 31-Cylinder, 32-Flange, 33-First countersunk bolt, 4-Connecting structure, 41-First connecting ring, 42-Second connecting ring, 43-Rubber ring, 44-Fixing bolt, 5-Heating tube, 51-Ceramic winding spool, 52-Annular mounting block, 53-Heating wire, 54-Connecting block, 6-Through hole, 7-Annular reinforcing rib, 8-Telescopic shielding mechanism, 81-Electric push rod, 82-Cylinder, 83-Rubber layer, 9-Shielding metal mesh, 91-Outer ring, 92-Annular metal mesh, 93-Second countersunk bolt, 10-Connecting ear plate, 11-Controller. Detailed Implementation

[0049] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0050] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0051] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0052] Please see Figure 1-6 This utility model provides a technical solution: an automatic ignition device for a biomass fuel boiler, comprising:

[0053] Blower 1 has a detachable connecting pipe 2 at its output end, and the inner wall of the connecting pipe 2 is coated with a ceramic coating. The ceramic coating serves as heat insulation to reduce heat loss. The inner wall of the sleeve 3 can also be coated with a ceramic coating for heat insulation.

[0054] The end of the connecting pipe 2 away from the blower 1 is sealed.

[0055] A through hole 6 is provided in the middle of the outer wall of the connecting pipe 2;

[0056] An electric heating element 5 is fixedly installed on the inner wall of the connecting pipe 2 near the blower 1. The electric heating element 5 generates heat when energized, and the heat of the electric heating element 5 is carried away by the blower 1 connected to the connecting pipe 2 to form hot air.

[0057] A telescopic shielding mechanism 8 is fixedly installed on the inner wall of the connecting pipe 2 away from the blower 1, and the movable end of the telescopic shielding mechanism 8 extends and blocks the inner end of the through hole 6.

[0058] Sleeve 3, which is detachably assembled to the outer wall of connecting pipe 2 at the end near blower 1, and through hole 6 is located inside sleeve 3;

[0059] An annular air outlet cavity is formed between the inner wall of the sleeve 3 and the outer wall of the connecting pipe 2. After the hot air is discharged from the through hole 6, it is discharged along the annular air outlet cavity between the inner wall of the sleeve 3 and the outer wall of the connecting pipe 2. The annular air outlet cavity reduces the cross-sectional size of the hot air discharge channel, thereby increasing the wind force.

[0060] The controller 11 is electrically connected to the telescopic shielding mechanism 8, the blower 1, and the heating element 5. After the exhaust is completed, the controller 11 controls the blower 1 and the heating element 5 to stop working and controls the telescopic shielding mechanism 8 to start. After the movable end of the telescopic shielding mechanism 8 extends, it blocks the inner end of the through hole 6, effectively preventing backfire or impurities from entering the connecting pipe 2 and avoiding affecting the subsequent use of the ignition device.

[0061] In some embodiments, in order to block the inner end of the through hole 6 when needed to prevent backfire or impurities from entering after ignition, the telescopic blocking mechanism 8 includes:

[0062] An electric push rod 81 has one end fixedly connected to the inner wall of the connecting pipe 2 away from the blower 1, and the other end of the electric push rod 81 is fixedly connected to a cylinder 82.

[0063] The electric push rod 81 is electrically connected to the controller 11. After the movable end of the electric push rod 81 extends, it drives the cylinder 82 to block the inner end of the through hole 6. The electric push rod 81 is started after being powered on. The controller 11 controls the extension or retraction of the electric push rod 81 and controls the start and stop of the electric push rod 81. After the electric push rod 81 extends to the maximum extent, it drives the cylinder 82 to block the inner end of the through hole 6.

[0064] In some embodiments, in order to improve the shielding effect of the outer wall of the cylinder 82 on the inner end of the through hole 6, a rubber layer 83 is attached and fixed to the curved outer wall of the cylinder 82.

[0065] The rubber layer 83 is shielded at the inner end of the through hole 6.

[0066] In some embodiments, in order to improve the mechanical strength of the annular air outlet cavity, annular reinforcing ribs 7 are uniformly fixedly assembled on the inner wall of the annular air outlet cavity along the length direction.

[0067] In some embodiments, in order to guide the hot air discharged from the through hole 6 so that the hot air is discharged along the annular air outlet cavity, thereby reducing the cross-sectional size of the hot air discharge channel and thus increasing the airflow intensity, the sleeve 3 includes:

[0068] A cylinder 31 is fixedly connected to a flange 32 at one end near the blower 1, and a first countersunk bolt 33 is fixedly connected between the flange 32 and the outer wall of the connecting pipe 2.

[0069] In some embodiments, in order to shield the end of the annular air outlet cavity, reduce the entry of impurities, and provide support, a shielding metal mesh 9 is detachably installed on the inner wall of the annular air outlet cavity between the sleeve 3 and the connecting pipe 2 at the end away from the blower 1.

[0070] In some embodiments, to reduce the entry of impurities and improve stability of the supporting annular air outlet cavity, the shielding metal mesh 9 includes:

[0071] The outer ring 91 is coaxially abutted against the end of the sleeve 3 away from the blower 1;

[0072] A second countersunk bolt 93 is evenly screwed between the outer ring 91 and the end of the sleeve 3 away from the blower 1;

[0073] An annular metal mesh 92 is fixedly assembled on the inner wall of the outer ring 91, and the inner ring surface of the annular metal mesh 92 is fixedly assembled on the outer wall of the end of the connecting pipe 2 away from the blower 1.

[0074] In some embodiments, in order to generate heat after being energized, and to cooperate with the blower 1 to generate high-temperature hot air for fuel ignition, the electric heating element 5 includes:

[0075] A ceramic winding spool 51, with an electric heating wire 53 fitted onto its outer wall;

[0076] Heating wire 53 is electrically connected to controller 11;

[0077] Both ends of the ceramic winding drum 51 are fixedly fitted with annular mounting blocks 52;

[0078] A connecting block 54 is fixedly mounted on the outer wall of the annular mounting block 52, and the outer end of the connecting block 54 is fixedly connected to the inner wall of the connecting pipe 2 near the blower 1.

[0079] In some embodiments, in order to facilitate the installation and fixing of the device on a platform or bracket and to facilitate the ignition of the device in a biomass fuel boiler, connecting ear plates 10 are uniformly fixedly mounted on the rear edge of the outer wall of the blower 1.

[0080] In some embodiments, to facilitate the installation and disassembly of the connecting pipe 2 and the output end of the blower 1, a connecting structure 4 is installed between the output end of the blower 1 and the end of the connecting pipe 2 near the blower 1, which includes:

[0081] The first connecting ring 41 is fixedly sleeved on the outer wall of the connecting pipe 2 near the edge of the blower 1;

[0082] The second connecting ring 42 is fixedly sleeved at the edge of the output end of the blower 1;

[0083] A rubber ring 43 is clamped between the first connecting ring 41 and the second connecting ring 42;

[0084] Fixing bolts 44 are evenly screwed between the first connecting ring 41 and the second connecting ring 42, and the bolts of the fixing bolts 44 pass through the rubber ring 43. When disassembling, all the fixing bolts 44 are unscrewed, and the connecting pipe 2 and the blower 1 can be separated. When installing, the operation is reversed. The design of the rubber ring 43 improves the airtightness of the connection between the connecting pipe 2 and the blower 1.

[0085] Working principle:

[0086] Blower 1 has a detachable connecting pipe 2 at its output end, and the inner wall of the connecting pipe 2 is coated with a ceramic coating. The ceramic coating serves as heat insulation to reduce heat loss. The inner wall of the sleeve 3 can also be coated with a ceramic coating for heat insulation. The electric heating tube 5 is energized and heats up. The blower 1, which is connected to the connecting pipe 2, blows air away the heat from the electric heating tube 5 to form hot air. An annular air outlet cavity is formed between the inner wall of the sleeve 3 and the outer wall of the connecting pipe 2. The hot air is discharged from the through hole 6 and then discharged along the annular air outlet cavity between the inner wall of the sleeve 3 and the outer wall of the connecting pipe 2. The annular air outlet cavity reduces the cross-sectional size of the hot air discharge channel, thereby increasing the wind force.

[0087] After the exhaust is completed, the controller 11 controls the blower 1 and the electric heating tube 5 to stop working, and controls the telescopic shielding mechanism 8 to start. After the movable end of the telescopic shielding mechanism 8 extends, it blocks the inner end of the through hole 6, effectively preventing backfire or impurities from entering the connecting pipe 2, and avoiding affecting the subsequent use of the ignition device.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A biomass fuel boiler automatic ignition device, characterized by, Include: The output end of the air blower (1) is detachably assembled with a connecting pipe (2), and the inner wall of the connecting pipe (2) is coated with a ceramic coating. The end of the connecting pipe (2) away from the air blower (1) is sealed. The outer wall of the connecting pipe (2) is circumferentially provided with a through hole (6) in the middle. The inner wall of the connecting pipe (2) is fixedly connected with an electric heating pipe (5) near the side of the air blower (1). The inner wall of the connecting pipe (2) is fixedly connected with a telescopic shielding mechanism (8) away from the side of the air blower (1), and the movable end of the telescopic shielding mechanism (8) is shielded inside the through hole (6) after extension. The sleeve (3) is detachably assembled on the outer wall of the connecting pipe (2) near the air blower (1), and the through hole (6) is located inside the sleeve (3). The annular air outlet cavity is formed between the inner wall of the sleeve (3) and the outer wall of the connecting pipe (2). The controller (11) is electrically connected with the telescopic shielding mechanism (8), the air blower (1) and the electric heating pipe (5) respectively.

2. The automatic ignition device for biomass fuel boiler according to claim 1, characterized in that, The telescopic shielding mechanism (8) comprises: One end of the electric push rod (81) is fixedly connected with the inner wall of the connecting pipe (2) away from the side of the air blower (1), and the other end of the electric push rod (81) is fixedly connected with a cylindrical body (82). The electric push rod (81) is electrically connected with the controller (11), and the movable end of the electric push rod (81) drives the cylindrical body (82) to shield the inside end of the through hole (6) after extension.

3. The automatic ignition device for biomass fuel boiler according to claim 2, characterized in that, The curved outer wall of the cylindrical body (82) is fixedly connected with a rubber layer (83). The rubber layer (83) shields the inside end of the through hole (6).

4. The automatic ignition device for biomass fuel boiler according to claim 1, characterized in that, The annular reinforcing ribs (7) are uniformly fixedly connected along the length direction of the inner wall of the annular air outlet cavity.

5. The automatic ignition device for biomass fuel boiler according to claim 1, characterized in that, The sleeve (3) comprises: The flange (32) is fixedly connected with the cylindrical body (31) near the air blower (1), and the first countersunk head bolt (33) is fixedly connected between the flange (32) and the outer wall of the connecting pipe (2).

6. The automatic ignition device for biomass fuel boiler according to claim 1, characterized in that, The annular air outlet cavity between the sleeve (3) and the connecting pipe (2) is detachably assembled with a shielding metal mesh (9) away from the side of the air blower (1).

7. The automatic ignition device for biomass fuel boiler according to claim 6, characterized in that, The shielding metal mesh (9) comprises: The outer ring (91) is coaxially abutted on the side of the sleeve (3) away from the air blower (1); The second countersunk head bolt (93) is uniformly screwed between the outer ring (91) and the side of the sleeve (3) away from the air blower (1); The annular metal mesh (92) is fixedly connected with the inner wall of the outer ring (91), and the inner annular surface of the annular metal mesh (92) is fixedly connected with the outer wall of the connecting pipe (2) away from the side of the air blower (1).

8. The automatic ignition device for biomass fuel boiler according to claim 1, characterized in that, The electric heating pipe (5) comprises: The outer wall of the ceramic winding drum (51) is sleeved with an electric heating wire (53); The electric heating wire (53) is electrically connected with the controller (11); The annular mounting block (52) is fixedly connected with the ceramic winding drum (51) on both sides; The connecting block (54) is fixedly connected with the outer wall of the annular mounting block (52), and the outer side of the connecting block (54) is fixedly connected with the inner wall of the connecting pipe (2) near the side of the air blower (1).

9. The automatic ignition device for biomass fuel boiler according to claim 1, characterized in that, The connecting lug plates (10) are uniformly fixedly connected with the outer wall of the air blower (1) on the rear side edge.

10. The automatic ignition device for biomass fuel boiler according to claim 1, characterized in that, The output end of the air blower (1) and the position between the connecting pipe (2) and the end close to the air blower (1) are equipped with a connecting structure (4), which comprises: A first connecting ring (41) fixedly sleeved on the outer wall of the connecting pipe (2) close to the edge of the air blower (1); A second connecting ring (42) fixedly sleeved on the edge of the output end of the air blower (1); The first connecting ring (41) and the second connecting ring (42) are clamped with a rubber ring (43) therebetween; The first connecting ring (41) and the second connecting ring (42) are uniformly screwed with fixed bolts (44) therebetween, and the screw rods of the fixed bolts (44) penetrate the rubber ring (43).

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