Plasma igniter

Abstract

The invention discloses a plasma igniter, and relates to the technical field of igniters, the plasma igniter comprises an igniter body, an electrode bin and an igniter electrode, the igniter body is fixedly provided with the electrode bin, the igniter electrode is arranged in the electrode bin, the igniter body is fixedly provided with an ignition bin, and the ignition bin is fixedly sleeved with an inner interlayer; the inner interlayer is fixedly sleeved with an outer interlayer, and a pulverized coal inlet pipe is fixedly installed below the side wall of the inner interlayer; a cooling air pipe is fixedly installed on the outer interlayer, a scraper blade is movably installed in the inner interlayer, the scraper blade is attached to the inner wall of the inner interlayer, and a movable groove is formed in the inner wall of the inner interlayer. While the inner interlayer is cooled and cooled through air supply of the cooling air pipe, the driving pipe can move in the inner interlayer, so that residual pulverized coal on the inner wall of the inner interlayer and substances generated by combustion are removed from the inner interlayer, and the substances are prevented from affecting heat dissipation of the inner interlayer by airflow in the outer interlayer.

Description

Technical Field

[0001] The invention relates to the technical field of igniters, in particular to a plasma igniter. Background Art

[0002] Plasma igniter is an advanced ignition device that uses high-voltage electric arc to generate high-temperature plasma to ignite fuel.

[0003] After searching the Chinese patent with publication number CN112761820A, a ramjet plasma igniter is disclosed, including a high-voltage electrode, an insulating medium, a low-voltage electrode, a rectifier grid, an annular shell and a flame nozzle; the low-voltage electrode is fixed to the outer circumference of the high-voltage electrode through an insulating medium, and a discharge space is formed between the two; one end of the annular shell is fixed to one end of the low-voltage electrode, and the other end is fixedly connected to the flame nozzle as a flame nozzle, and a swirl space is formed between the annular shell and the low-voltage electrode; a rectifier grid is set at the other end of the low-voltage electrode; a primary air flow hole is set on the low-voltage electrode; a tangential air inlet is set on the annular shell; the plasma igniter and the combustion chamber share the oil-gas mixed fuel, and the high-speed jet combustible mixture enters from the tangential air inlet, forming a rotating air flow in the swirl space, and becomes a direct current to the flame nozzle through the action of the rectifier grid; the combustible mixture enters the discharge space through the primary air flow hole to achieve ignition. This patent can realize multiple ignitions and sustainable combustion of ramjet engines, meeting the wide-range ignition requirements of the engine.

[0004] However, the above invention has the following disadvantages:

[0005] In order to ensure faster ignition, existing plasma igniters generally use coal powder for combustion assistance. However, when the coal powder burns inside the igniter, a certain amount of coal powder residue and some combustion products will remain inside the igniter. These combustion products and coal powder residues on the inner wall of the igniter will affect the heat dissipation effect of the igniter and affect the normal use of the igniter. Summary of the invention

[0006] The object of the present invention is to provide a plasma igniter to solve the problems raised in the above background technology.

[0007] The technical solution of the present invention is: a plasma igniter, comprising an igniter body, an electrode bin and an igniter electrode, the igniter body having an electrode bin fixedly mounted thereon, the igniter electrode being arranged inside the electrode bin, the igniter body having an ignition bin fixedly mounted thereon, an inner partition being fixedly sleeved on the ignition bin, an outer partition being fixedly sleeved on the inner partition, a pulverized coal inlet pipe being fixedly mounted below a side wall of the inner partition, and a primary air duct being fixedly mounted on the inner partition;

[0008] A cooling air duct is fixedly installed on the outer partition, a scraper is movably installed inside the inner partition, the scraper is fitted with the inner wall of the inner partition, a movable groove is opened on the inner wall of the inner partition, a transmission block is movably installed inside the movable groove, the transmission block and the scraper are fixedly connected, a transmission shaft is movably installed inside the movable groove, the transmission shaft passes through the side wall of the transmission block and is threadedly connected with the transmission block, an air bin is fixedly installed on the inner partition, an air intake pipe is fixedly installed on the side wall of the air bin, a check block is movably installed on the upper part of the interior of the air intake pipe through a torsion spring, a check plate is fixedly installed on the check block, an air guide plate is fixedly installed on the inner part of the outer partition at a position corresponding to the cooling air duct, an exhaust port is opened on the inner partition, the exhaust port is connected to the inner partition and the interior of the air bin, a fan blade is movably installed inside the exhaust port, a connecting shaft is fixedly installed on the fan blade, and the connecting shaft and the transmission shaft are fixedly connected.

[0009] Preferably, a movable plate is movably installed inside the gas bin, a limit rod is fixedly installed inside the gas bin, two ends of the limit rod respectively pass through the upper wall and lower wall of the movable plate, a force spring is sleeved on the limit rod, an electric telescopic rod is fixedly installed on the side wall of the ignition bin, a baffle is fixedly installed on the output end of the electric telescopic rod, and the baffle extends upward to the inside of the exhaust port.

[0010] Preferably, a guide seat is fixedly installed on the upper part of the coal powder inlet pipe, a guide block is movably installed inside the guide seat, the guide block is an inverted cone structure, a crushing blade is arranged above the guide block, the crushing blade is inlaid and movably installed inside the coal powder inlet pipe, a connecting rod is fixedly installed on the bottom of the crushing blade, a movable groove is opened inside the guide block, the bottom of the crushing blade is located inside the movable groove, and a reset spring is installed inside the movable groove.

[0011] Preferably, a driving motor is fixedly installed on the outside of the coal powder inlet pipe, and a driving gear is fixedly installed on the output end of the driving motor. The driving gear penetrates the side wall of the coal powder inlet pipe and meshes with the outer wall of the crushing blade for transmission. A protective shell is fixedly installed on the ignition chamber, and the driving gear is located inside the protective shell.

[0012] Preferably, a dustproof net is movably sleeved on the ignition chamber, and an extrusion wheel is fixedly mounted on the output end of the driving motor, and the extrusion wheel is a circular structure with a protrusion.

[0013] Preferably, a mounting block is fixedly installed on the inner wall of the ignition chamber, and a mounting rod is fixedly installed on the dustproof net at a position corresponding to the mounting block. The mounting rod passes through the side wall of the mounting block, and a mounting spring is sleeved on the mounting rod. The dustproof net is movably installed inside the ignition chamber through the mounting block, the mounting rod and the mounting spring.

[0014] Preferably, a cooling interlayer is fixedly installed inside the electrode bin, and a secondary air duct is fixedly installed on the side wall of the electrode bin, and the secondary air duct is communicated with the interior of the cooling interlayer.

[0015] Preferably, a partition plate is fixedly mounted on the cooling interlayer, and a cooling water inlet pipe and a cooling water outlet pipe are fixedly mounted on both sides of the partition plate, respectively, and the cooling water inlet pipe is connected to the output end of an external water pump.

[0016] Preferably, a fuel pipe is fixedly mounted on the electrode bin, the fuel pipe is connected to the interior of the electrode bin, a spray head is fixedly mounted above the interior of the fuel pipe, and a mist-forming net is mounted inside the spray head.

[0017] The present invention provides a plasma igniter through improvement, which has the following improvements and advantages compared with the prior art:

[0018] First, in the present invention, by setting the air guide plate, when the gas is transported to the inside of the outer compartment through the cooling air duct, a part of the gas will be guided by the air guide plate, and then can enter the inside of the gas bin through the air inlet pipe. When the gas enters the inside of the gas bin, the movable plate will move upward inside the gas bin, and at the same time, the baffle plate will seal the inside of the air guide plate. At this time, the gas will be stored inside the gas bin. When the ignition is completed, the electric telescopic rod can be started, and the electric telescopic rod will drive the baffle plate to leave the inside of the air guide plate. At this time, the gas inside the gas bin will be discharged from the exhaust port under the action of its own air pressure and the force spring, thereby driving the fan blade to rotate. The fan blade is connected to the transmission shaft through the connecting shaft and the transmission shaft, and the transmission shaft will also be driven to rotate. The rotation of the transmission shaft can drive the transmission block to move inside the movable groove, thereby driving the scraper to move on the inner wall of the inner compartment. The movement of the scraper can clean the inner wall of the inner compartment, thereby removing the coal powder remaining on the inner wall of the inner compartment and the substances produced by combustion from the inner compartment, so as to prevent these substances from affecting the heat dissipation of the inner compartment by the internal airflow of the outer compartment to the inner compartment.

[0019] Second, in the present invention, when the coal powder is transported through the coal powder inlet pipe, the airflow drives the coal powder to move upward inside the coal powder inlet pipe. Under the action of pressure, the guide block can be lifted upward, and after passing through the guide seat and the guide block, it moves upward. At the same time, the driving motor can be started, and the driving motor drives the driving gear to drive the crushing blades to rotate. The rotation of the crushing blades can break up the larger coal powder that has agglomerated in the airflow, so that the agglomerated coal powder can be turned into powder again, which is convenient for ignition.

[0020] Third: In the present invention, the secondary air duct can be ventilated to the interior of the cooling compartment through an external air pump. After the gas enters the interior of the electrode bin, it can dissipate the heat of the igniter electrode and guide the ignited flame so that the flame burns in the direction of the coal powder. External cooling water can be sent to the interior of the electrode bin through the cooling water inlet pipe. After the cooling water moves inside the electrode bin, it can be discharged from the interior of the electrode bin through the cooling water discharge pipe, thereby further cooling the interior of the electrode bin.

[0021] Fourthly: In the present invention, a certain amount of auxiliary fuel can be transported to the position of the internal igniter electrode of the electrode bin through the fuel pipe. The auxiliary fuel is easier to ignite than coal powder. The auxiliary fuel can be ignited by plasma first, and then the coal powder can be ignited by the temperature of the auxiliary fuel, which can improve the ignition efficiency. A spray head is fixedly installed on the upper part of the fuel pipe, and a mist-forming net is installed inside the spray head. The auxiliary fuel will become mist after passing through the mist-forming net, which is more convenient to ignite. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a cross-sectional view of the internal structure of the present invention;

[0025] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0027] Figure 5 It is a cross-sectional view of the internal structure of the gas bin in the present invention;

[0028] Figure 6 For the present invention Figure 2 Enlarged view of point C in the middle;

[0029] Figure 7 For the present invention Figure 2 Enlarged view of point D in the middle;

[0030] Figure 8 It is a cross-sectional view of the internal structure of the fuel pipe in the present invention.

[0031] Reference numerals:

[0032] 1. Ignition fuselage; 2. Electrode compartment; 3. Ignition electrode; 4. Ignition compartment; 5. Inner compartment; 6. Outer compartment; 7. Cooling air duct; 8. Coal powder inlet pipe; 9. Primary air duct; 10. Scraper; 11. Movable slot; 12. Transmission block; 13. Transmission shaft; 14. Air compartment; 15. Inlet pipe; 16. Check block; 17. Check plate; 18. Air guide plate; 19. Exhaust port; 20. Fan blade; 21. Connecting shaft; 22. Electric telescopic rod; 23. Baffle; 24. Movable plate; 25. Limit rod; 26. Force spring; 27. Guide seat; 28. Guide block; 29. ​​Crushing blade; 30. Connecting rod; 31. Moving groove; 32. Return spring; 33. Driving motor; 34. Driving gear; 35. Dust-proof net; 36. Protective shell; 37. Extrusion wheel; 38. Mounting block; 39. Mounting rod; 40. Mounting spring; 41. Cooling interlayer; 42. Partition plate; 43. Secondary air duct; 44. Cooling water inlet pipe; 45. Cooling water outlet pipe; 46. Fuel pipe; 47. Spray head; 48. Mist net. DETAILED DESCRIPTION

[0033] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. 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.

[0034] The present invention provides a plasma igniter through improvement. The technical solution of the present invention is:

[0035] like Figures 1 to 8As shown, an embodiment of the present invention provides a plasma igniter, including an igniter body 1, an electrode compartment 2 and an igniter electrode 3. The electrode compartment 2 is fixedly installed on the igniter body 1, and the electrode compartment 2 is a hollow cylindrical structure. The igniter electrode 3 is arranged inside the electrode compartment 2. The igniter electrode 3 is fixedly connected to the output end of the igniter body 1. An ignition compartment 4 is fixedly installed on the igniter body 1. The ignition compartment 4 is a hollow cylindrical structure. The electrode compartment 2 and the igniter electrode 3 are located inside the ignition compartment 4. An inner partition 5 is fixedly sleeved on the ignition compartment 4, and an outer partition 6 is fixedly sleeved on the inner partition 5. The side wall of the inner partition 5 A coal powder inlet pipe 8 is fixedly installed at the bottom, and the coal powder inlet pipe 8 penetrates the inner and outer walls of the inner partition 5 and the ignition chamber 4 upward. The coal powder inlet pipe 8 is used to transport the coal powder required for ignition. The coal powder inlet pipe 8 transports the air with coal powder to the front of the igniter electrode 3, and then plasma can be generated through the igniter electrode 3, and the plasma can ignite the coal powder. A primary air duct 9 is fixedly installed on the inner partition 5, and the primary air duct 9 is connected to the inside of the ignition chamber 4. The primary air duct 9 is connected to an external air pump, and gas can be transported to the inside of the ignition chamber 4 through the primary air duct 9, and the gas can guide the ignited coal powder to ignite the fuel;

[0036] A cooling air duct 7 is fixedly installed on the outer partition 6. The cooling air duct 7 is used to transport gas to the inside of the outer partition 6, so as to cool the inner partition 5. A scraper 10 is movably installed inside the inner partition 5. The scraper 10 is a circular ring structure. The scraper 10 fits the inner wall of the inner partition 5. A movable groove 11 is opened on the inner wall of the inner partition 5. The movable groove 11 is a rectangular groove. A transmission block 12 is movably installed inside the movable groove 11. The transmission block 12 is fixedly connected to the scraper 10. A transmission shaft 13 is movably installed inside the movable groove 11. The transmission shaft 13 is a reciprocating screw rod, which penetrates the side wall of the transmission block 12 and is threadedly connected to the transmission block 12. An air chamber 14 is fixedly installed on the inner compartment 5, and an air intake pipe 15 is fixedly installed on the side wall of the air chamber 14. The air intake pipe 15 is a cylindrical pipe, and the air intake pipe 15 is connected to the interior of the outer compartment 6. A check block 16 is movably installed on the upper part of the interior of the air intake pipe 15 through a torsion spring. A check plate 17 is fixedly installed on the check block 16. The check plate 17 is a circular plate with the same size as the interior of the air intake pipe 15. The check plate 17 can be used to check the air intake pipe 15. The inside of the air storage 14 is sealed, the check plate 17 can only be turned toward the inside of the air storage 14, and the inner part of the outer partition 6 is fixedly installed with an air guide plate 18 at the position corresponding to the cooling air duct 7. The air guide plate 18 is a rectangular plate. When the gas is transported to the inside of the outer partition 6 through the cooling air duct 7, a part of the gas will be guided by the air guide plate 18, and then can enter the inside of the air storage 14 through the air inlet pipe 15. An exhaust port 19 is opened on the inner partition 5. The exhaust port 19 is an "L"-shaped groove. The exhaust port 19 connects the inner partition 5 and the inside of the air storage 14, and the exhaust The opening 19 is provided with a fan blade 20 movably mounted inside, and a connecting shaft 21 is fixedly mounted on the fan blade 20. The connecting shaft 21 is a cylindrical structure, and the connecting shaft 21 is fixedly connected to the transmission shaft 13. When the gas enters the interior of the gas bin 14, it can be discharged through the exhaust port 19. At the same time, when the gas moves inside the air guide plate 18, it drives the fan blade 20 to rotate. The fan blade 20 is connected to the transmission shaft 13 through the connecting shaft 21, and the transmission shaft 13 is also driven to rotate. The rotation of the transmission shaft 13 can drive the transmission block 12 to move inside the movable groove 11.

[0037] A movable plate 24 is movably installed inside the gas bin 14. The movable plate 24 is a circular plate of the same size as the inside of the gas bin 14. A limit rod 25 is fixedly installed inside the gas bin 14. The two ends of the limit rod 25 respectively penetrate the upper wall and the lower wall of the movable plate 24. A force spring 26 is sleeved on the limit rod 25. An electric telescopic rod 22 is fixedly installed on the side wall of the ignition bin 4. A baffle 23 is fixedly installed on the output end of the electric telescopic rod 22. The baffle 23 is a rectangular plate. The baffle 23 extends upward to the inside of the exhaust port 19. When the gas enters the inside of the gas bin 14, the movable plate 24 will move upward inside the gas bin 14. At the same time, the baffle 23 seals the inside of the air guide plate 18. At this time, the gas will be in the gas bin. 14 is stored. When ignition is completed, the electric telescopic rod 22 can be started. The electric telescopic rod 22 drives the baffle 23 to leave the inside of the wind guide plate 18. At this time, the gas inside the air bin 14 will be discharged from the exhaust port 19 under the action of its own air pressure and the force spring 26, thereby driving the fan blade 20 to rotate. The rotation of the fan blade 20 makes the transmission block 12 move inside the movable groove 11, thereby driving the scraper 10 to move on the inner wall of the inner partition 5. The movement of the scraper 10 can clean the inner wall of the inner partition 5, thereby removing the coal powder remaining on the inner wall of the inner partition 5 and the substances produced by combustion from the inner partition 5, so as to prevent these substances from affecting the heat dissipation of the inner partition 5 by the internal airflow of the outer partition 6.

[0038] A guide seat 27 is fixedly installed on the upper part of the coal powder inlet pipe 8. The guide seat 27 is an annular structure. A guide block 28 is movably installed inside the guide seat 27. The guide block 28 is an inverted cone structure. A crushing leaf 29 is arranged above the guide block 28. The crushing leaf 29 is embedded and movably installed inside the coal powder inlet pipe 8. A connecting rod 30 is fixedly installed at the bottom of the crushing leaf 29. The connecting rod 30 is a cylindrical rod. A movable groove 31 is opened inside the guide block 28. The bottom of the crushing leaf 29 is located inside the movable groove 31. A reset spring 32 is installed inside the movable groove 31. A drive motor 33 is fixedly installed on the outer side of the coal powder inlet pipe 8. A drive gear is fixedly installed on the output end of the drive motor 33. The wheel 34 and the driving gear 34 penetrate the side wall of the coal powder inlet pipe 8 and mesh with the outer wall of the crushing blade 29 for transmission. A protective shell 36 is fixedly installed on the ignition chamber 4, and the driving gear 34 is located inside the protective shell 36. When the coal powder is transported through the coal powder inlet pipe 8, the airflow drives the coal powder to move upward inside the coal powder inlet pipe 8. Under the action of pressure, the guide block 28 can be lifted upward and move upward after being guided by the guide seat 27 and the guide block 28. At the same time, the driving motor 33 can be started. The driving motor 33 drives the driving gear 34 to drive the crushing blade 29 to rotate. The rotation of the crushing blade 29 can break up the larger coal powder after agglomeration in the airflow, so that the agglomerated coal powder is turned into powder again, which is convenient for ignition.

[0039] A dustproof net 35 is movably sleeved on the ignition chamber 4. The dustproof net 35 is an annular structure. The dustproof net 35 can prevent the coal powder entering the inner compartment 5 from being dusted, and prevent the coal powder from adhering to the outer wall of the ignition chamber 4. An extrusion wheel 37 is fixedly installed on the output end of the drive motor 33. The extrusion wheel 37 is a circular structure with a protrusion. When the drive motor 33 drives the drive gear 34 to rotate, the extrusion wheel 37 will also rotate. The rotation of the extrusion wheel 37 can uniformly impact the dustproof net 35, so that the dustproof net 35 can be vibrated, thereby preventing the coal powder from blocking the dustproof net 35.

[0040] A mounting block 38 is fixedly installed on the inner wall of the ignition chamber 4, and a mounting rod 39 is fixedly installed on the dustproof net 35 at a position corresponding to the mounting block 38. The mounting rod 39 is a cylindrical structure. The mounting rod 39 passes through the side wall of the mounting block 38. A mounting spring 40 is sleeved on the mounting rod 39. The dustproof net 35 is movably installed inside the ignition chamber 4 through the mounting block 38, the mounting rod 39 and the mounting spring 40.

[0041] A cooling partition 41 is fixedly installed inside the electrode bin 2, and the cooling partition 41 is a circular ring structure. A secondary air duct 43 is fixedly installed on the side wall of the electrode bin 2. The secondary air duct 43 is a tubular structure. The secondary air duct 43 is connected to the interior of the cooling partition 41. The secondary air duct 43 can be ventilated to the interior of the cooling partition 41 through an external air pump. After the gas enters the interior of the electrode bin 2, it can not only dissipate heat to the igniter electrode 3, but also guide the ignited flame so that the flame burns in the direction of the coal powder. A partition plate 42 is fixedly installed on the cooling partition 41. The partition plate 42 is a semi-annular structure. A cooling water inlet pipe 44 and a cooling water discharge pipe 45 are fixedly installed on both sides of the partition plate 42. The cooling water inlet pipe 44 is connected to the output end of the external water pump. External cooling water can be sent into the interior of the electrode bin 2 through the cooling water inlet pipe 44. After the cooling water moves in the interior of the electrode bin 2, it can be discharged from the interior of the electrode bin 2 through the cooling water discharge pipe 45, thereby further cooling the interior of the electrode bin 2.

[0042] A fuel pipe 46 is fixedly installed on the electrode bin 2. The fuel pipe 46 is a tubular structure. The fuel pipe 46 is connected to the interior of the electrode bin 2. A certain amount of auxiliary fuel can be transported to the position of the internal igniter electrode 3 of the electrode bin 2 through the fuel pipe 46. The auxiliary fuel is easier to ignite than coal powder. The auxiliary fuel can be ignited by plasma first, and then the coal powder can be ignited by the temperature of the auxiliary fuel, which can improve the ignition efficiency. A spray head 47 is fixedly installed on the upper part of the interior of the fuel pipe 46, and a mist-forming net 48 is installed inside the spray head 47. The auxiliary fuel will become mist after passing through the mist-forming net 48, which is more convenient to ignite.

[0043] Specific implementation steps: the coal powder inlet pipe 8 conveys air with coal powder to the front of the igniter electrode 3, and then plasma can be generated through the igniter electrode 3, and the plasma can ignite the coal powder. The gas can be conveyed to the inside of the ignition chamber 4 through the primary air duct 9, and the gas can guide the ignited coal powder to ignite the fuel;

[0044] At the same time, through the setting of the air guide plate 18, when the gas is transported to the inside of the outer compartment 6 through the cooling air duct 7, a part of the gas will be guided by the air guide plate 18, and then can enter the inside of the air warehouse 14 through the air inlet pipe 15. When the gas enters the inside of the air warehouse 14, the movable plate 24 will move upward inside the air warehouse 14, and at the same time, the baffle 23 seals the inside of the air guide plate 18. At this time, the gas will be stored inside the air warehouse 14. When the ignition is completed, the electric telescopic rod 22 can be started, and the electric telescopic rod 22 drives the baffle 23 to leave the inside of the air guide plate 18. At this time, the gas inside the air warehouse 14 will pass through it. The air is discharged from the exhaust port 19 under the action of its own air pressure and the force spring 26, thereby driving the fan blade 20 to rotate. The fan blade 20 is connected to the transmission shaft 13 through the connecting shaft 21, and the transmission shaft 13 is also driven to rotate. The rotation of the transmission shaft 13 can drive the transmission block 12 to move inside the movable groove 11, thereby driving the scraper 10 to move on the inner wall of the inner partition 5. The movement of the scraper 10 can clean the inner wall of the inner partition 5, thereby removing the coal powder remaining on the inner wall of the inner partition 5 and the substances produced by combustion from the inner partition 5, so as to prevent these substances from affecting the heat dissipation of the inner partition 5 by the internal airflow of the outer partition 6.

[0045] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plasma igniter, comprising an igniter body (1), an electrode compartment (2) and an igniter electrode (3), wherein the electrode compartment (2) is fixedly mounted on the igniter body (1), and the igniter electrode (3) is arranged inside the electrode compartment (2), characterized in that: An ignition chamber (4) is fixedly mounted on the igniter body (1), an inner partition (5) is fixedly sleeved on the ignition chamber (4), an outer partition (6) is fixedly sleeved on the inner partition (5), a coal powder inlet pipe (8) is fixedly mounted below the side wall of the inner partition (5), and a primary air duct (9) is fixedly mounted on the inner partition (5); A cooling air duct (7) is fixedly mounted on the outer partition (6); a scraper (10) is movably mounted inside the inner partition (5); the scraper (10) is in contact with the inner wall of the inner partition (5); a movable groove (11) is provided on the inner wall of the inner partition (5); a transmission block (12) is movably mounted inside the movable groove (11); the transmission block (12) is fixedly connected to the scraper (10); a transmission shaft (13) is movably mounted inside the movable groove (11); the transmission shaft (13) passes through the side wall of the transmission block (12) and is threadedly connected to the transmission block (12); an air bin (14) is fixedly mounted on the inner partition (5); the air bin (14) ) is fixedly mounted on the side wall of the air intake pipe (15), a check block (16) is movably mounted on the upper part of the air intake pipe (15) via a torsion spring, a check plate (17) is fixedly mounted on the check block (16), an air guide plate (18) is fixedly mounted on the inner part of the outer partition (6) at a position corresponding to the cooling air duct (7), an exhaust port (19) is opened on the inner partition (5), the exhaust port (19) is connected to the inner part of the inner partition (5) and the inside of the air bin (14), a fan blade (20) is movably mounted inside the exhaust port (19), a connecting shaft (21) is fixedly mounted on the fan blade (20), and the connecting shaft (21) is fixedly connected to the transmission shaft (13).

2. A plasma igniter according to claim 1, characterized in that: A movable plate (24) is movably installed inside the gas chamber (14), a limit rod (25) is fixedly installed inside the gas chamber (14), two ends of the limit rod (25) respectively penetrate the upper wall surface and the lower wall surface of the movable plate (24), a force spring (26) is sleeved on the limit rod (25), an electric telescopic rod (22) is fixedly installed on the side wall of the ignition chamber (4), a baffle (23) is fixedly installed on the output end of the electric telescopic rod (22), and the baffle (23) extends upward to the inside of the exhaust port (19).

3. A plasma igniter according to claim 1, characterized in that: A guide seat (27) is fixedly installed above the interior of the coal powder inlet pipe (8), a guide block (28) is movably installed inside the guide seat (27), the guide block (28) is an inverted cone structure, and a crushing blade (29) is arranged above the guide block (28), and the crushing blade (29) is embedded and movably installed inside the coal powder inlet pipe (8).

4. A plasma igniter according to claim 3, characterized in that: A connecting rod (30) is fixedly mounted on the bottom of the crushing blade (29), a movable groove (31) is provided inside the guide block (28), the bottom of the crushing blade (29) is located inside the movable groove (31), and a return spring (32) is installed inside the movable groove (31).

5. A plasma igniter according to claim 3, characterized in that: A driving motor (33) is fixedly mounted on the outer side of the coal powder inlet pipe (8), a driving gear (34) is fixedly mounted on the output end of the driving motor (33), the driving gear (34) penetrates the side wall of the coal powder inlet pipe (8) and meshes with the outer side wall of the crushing blade (29) for transmission, a protective shell (36) is fixedly mounted on the ignition chamber (4), and the driving gear (34) is located inside the protective shell (36).

6. A plasma igniter according to claim 5, characterized in that: A dustproof net (35) is movably sleeved on the ignition chamber (4), and an extrusion wheel (37) is fixedly mounted on the output end of the drive motor (33), wherein the extrusion wheel (37) is a circular structure with a protrusion.

7. A plasma igniter according to claim 6, characterized in that: A mounting block (38) is fixedly mounted on the inner wall of the ignition chamber (4); a mounting rod (39) is fixedly mounted on the dustproof net (35) at a position corresponding to the mounting block (38); the mounting rod (39) passes through the side wall of the mounting block (38); a mounting spring (40) is sleeved on the mounting rod (39); and the dustproof net (35) is movably mounted inside the ignition chamber (4) through the mounting block (38), the mounting rod (39) and the mounting spring (40).

8. A plasma igniter according to claim 1, characterized in that: A cooling interlayer (41) is fixedly installed inside the electrode bin (2), and a secondary air duct (43) is fixedly installed on the side wall of the electrode bin (2), and the secondary air duct (43) is connected to the inside of the cooling interlayer (41).

9. A plasma igniter according to claim 8, characterized in that: A partition plate (42) is fixedly mounted on the cooling interlayer (41), and a cooling water inlet pipe (44) and a cooling water outlet pipe (45) are fixedly mounted on both sides of the partition plate (42), respectively. The cooling water inlet pipe (44) is connected to the output end of an external water pump.

10. A plasma igniter according to claim 1, characterized in that: A fuel pipe (46) is fixedly mounted on the electrode bin (2), the fuel pipe (46) being in communication with the interior of the electrode bin (2), a spray head (47) is fixedly mounted above the interior of the fuel pipe (46), and a mist-forming net (48) is mounted inside the spray head (47).

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