Plasma burner

Abstract

The utility model relates to the field of combustors, and discloses a plasma combustor which comprises a combustion box, a partition plate is fixedly arranged in the combustion box, and an anode piece is fixedly installed on the partition plate. A supporting plate is arranged in the combustion box in a sliding mode, and a cathode piece is detachably installed on the supporting plate through a fastening piece. A first screw rod is rotationally arranged in the combustion box; one end of the first screw rod is rotationally connected with the partition plate, and the other end is rotationally connected with a box body of the combustion box; the first lead screw penetrates through the supporting plate and is in threaded connection with the supporting plate. A limiting piece is arranged in the combustion box, and the supporting plate is in limiting sliding fit with the limiting piece; and the cathode piece and the anode piece are spliced and matched. The first lead screw pushes the supporting plate to be close to or far away from the partition plate, and the supporting plate drives the cathode piece to be matched with the anode piece on the partition plate in an inserted mode, so that after a cathode head on the cathode piece is separated from an anode head on the anode piece, the stability of the cathode head is kept, and then the stability that the cathode head is pulled out of an electric arc from the anode head is kept; the ignition efficiency is improved while the ignition success rate is increased.

Description

Technical Field

[0001] The utility model relates to the field of burners, in particular to a plasma burner. Background Art

[0002] A plasma burner is a device that uses high-temperature plasma for ignition and combustion. It is often used in the industrial field, especially when efficient and environmentally friendly combustion technology is required. The plasma burner ignites coal powder or other fuels through an arc generated by a plasma generator. This internal combustion burner can directly ignite coal powder without flame in the furnace, achieving oil-free startup of the boiler and oil-free low-load stable combustion.

[0003] A plasma burner described in publication number CN213746719U comprises a burner shell and an adjusting mechanism, two groups of processing boxes are fixedly connected to one side of the burner shell, one end of the inner wall of the two groups of processing boxes is fixedly connected to a motor, a rotating shaft is provided at the output end of the motor, a roller is fixedly connected to the outer surface of the rotating shaft, and a mounting seat is rotatably connected to the other end of the rotating shaft, a cathode body is slidably connected to the bottom ends of the two groups of processing boxes, and a cathode head is fixedly connected to one side of the cathode body.

[0004] Based on the above technical features, the problem that arises is: in order to improve the success rate of arc pulling and the stability of the pulled arc, when the cathode body and the anode body are out of contact, it is necessary to control the position of the cathode body relative to the anode body to maintain the stability of the cathode body. In the prior art, the stability of the cathode body is maintained by the static friction between the roller and the cathode body, which has poor stability and is very easy to damage the cathode body, resulting in leakage accidents.

[0005] Therefore, it is necessary to solve the above problems by using plasma burners. Utility Model Content

[0006] The purpose of the utility model is to provide a plasma burner to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plasma burner, comprising a combustion box, a partition is fixedly arranged in the combustion box, and an anode component is fixedly installed on the partition; a support plate is slidably arranged in the combustion box, and a cathode component is detachably installed on the support plate through a fastener; a first screw rod is rotatably arranged in the combustion box; one end of the first screw rod is rotatably connected to the partition, and the other end is rotatably connected to the body of the combustion box; the first screw rod passes through the support plate and is threadedly connected to the support plate; a limit piece is arranged in the combustion box, and the support plate and the limit piece are limited and slidably matched; the cathode component and the anode component are plug-fitted.

[0008] Preferably, a motor is fixedly arranged on the combustion box, and the output shaft of the motor is coaxially fixedly connected to the first screw rod.

[0009] Preferably, the limiting member comprises a sliding rod; one end of the sliding rod is fixedly connected to the partition, and the other end is fixedly connected to the box body of the combustion box; the sliding rod passes through a support plate, and the support plate and the sliding rod are limited and slidably matched.

[0010] Preferably, the fastener includes a bolt; a slider is arranged on the support plate, a mounting groove is provided on the slider, a mounting plate is slidably arranged in the mounting groove, and the cathode component is fixedly arranged on the mounting plate; the bolt thread penetrates into the slider and extends into the mounting groove; the bolt is threadedly connected to the slider and abuts against the slider to limit the position.

[0011] Preferably, a replacement opening is provided on the combustion box, and a cover plate is slidably installed in the replacement opening; a first transmission member and a second transmission member are arranged in the combustion box, and the input ends of the first transmission member and the second transmission member are both transmission-connected to the support plate; the output end of the first transmission member is transmission-connected to the mounting plate, and the output end of the second transmission member is transmission-connected to the cover plate.

[0012] Preferably, the first transmission member includes a second rack, a first gear as an input end and a second screw as an output end; the first gear is rotatably set on the support plate, the second rack is fixedly set on the inner wall of the combustion box along the sliding direction of the support plate, and the first gear is in contact meshing cooperation with the second rack; a sliding groove is provided on the support plate, and the slider is limitedly slidably engaged with the sliding groove; a second screw is rotatably set in the sliding groove, and the second screw is coaxially fixedly connected to the first gear; the second screw passes through the slider and is threadedly connected to the slider.

[0013] Preferably, the second transmission member includes a second gear, a first rack as an input end and a third screw rod as an output end; the first rack is fixedly connected to the support plate and is arranged along the sliding direction of the support plate; the third screw rod is rotatably arranged in the component replacement port and is arranged along the sliding direction of the cover plate; the third screw rod is threadedly connected to the cover plate; the second gear is coaxially fixedly connected to the third screw rod; the second gear is in contact meshing cooperation with the first rack.

[0014] Preferably, the combustion box is fixedly connected to a jet air inlet pipe; a plug-in slot is provided on the anode component, and the cathode component is plugged into the plug-in slot; an anode head is fixedly provided at the end of the anode component away from the partition, and the anode head is located in the slot; a cathode head is fixedly provided at the end of the cathode component away from the support plate, and the cathode head and the anode head correspond to each other and touch and fit each other; a through hole is provided on the anode component, and the through hole connects the plug-in slot and the inside of the combustion box.

[0015] Preferably, the combustion box is fixedly connected to a pulverized coal feed pipe; and a flame injection hole is provided on the combustion box.

[0016] Preferably, a coil is fixedly arranged on the combustion box, and the coil corresponds to the anode head of the anode member.

[0017] Technical effects and advantages of the utility model:

[0018] First, the utility model pushes the support plate towards or away from the partition through the first screw rod, and the support plate drives the cathode part to be plugged and matched with the anode part on the partition, so that after the cathode head on the cathode part and the anode head on the anode part are out of contact, the stability of the cathode head is maintained, and then the stability of the arc pulled out by the cathode head from the anode head is maintained, thereby improving the ignition success rate and the ignition efficiency.

[0019] Secondly, the utility model controls the support plate through the first screw rod, and the cathode component is controlled by the support plate, so the cathode component is not easily damaged, the service life of the cathode component is guaranteed, and the probability of leakage is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the local structure of the utility model.

[0023] In the figure: 1. combustion box; 2. flame hole; 3. coal powder feed pipe; 4. coil; 5. jet air inlet pipe; 6. cover plate; 7. motor; 8. first screw rod; 9. support plate; 10. bolt; 11. partition; 12. anode member; 13. cathode member; 14. slider; 15. second screw rod; 16. first gear; 17. slide rod; 18. third screw rod; 19. slide groove; 20. second gear; 21. first rack; 22. second rack. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] The utility model provides a plasma burner, comprising a combustion box 1. Figure 1As shown, the top of the combustion box 1 is fixedly connected to a pulverized coal feed pipe 3 for spraying pulverized coal into the combustion box 1 and a jet air inlet pipe 5 for injecting an air jet into the combustion box 1. A circular flame hole 2 is cut on the left side of the combustion box 1, and the flame burning in the combustion box 1 is ejected from the flame hole 2.

[0026] like Figure 2 As shown, a partition 11 is welded and fixed in the combustion box 1, and the partition 11 divides the combustion box 1 into a combustion chamber and a storage chamber. The partition 11 is fixedly assembled with an anode piece 12, and the anode piece 12, the pipe opening of the coal powder feed pipe 3 located in the combustion box 1, and the pipe opening of the jet air intake pipe 5 located in the combustion box 1 are all located in the combustion chamber. A plug-in slot is drilled in the anode piece 12, and the plug-in slot passes through the partition 11 and communicates with the storage chamber. The end of the anode piece 12 away from the partition 11 is fixedly assembled with an anode head, and the anode head is located in the plug-in slot for supplying direct current.

[0027] Two through holes are drilled in the anode member 12, and both through holes are connected to the insertion slot of the anode member 12 and the combustion chamber of the combustion box 1. One through hole corresponds to the nozzle of the jet air inlet pipe 5 located in the combustion box 1, and is used to pass the air jet. The other through hole is used to pass the high-temperature plasma. The high-temperature plasma contacts and mixes with the coal powder sprayed from the coal powder feeding pipe 3, thereby igniting the coal powder.

[0028] The bottom of the combustion box 1 is fixedly connected to a waste discharge pipe, and the pipe opening of the waste discharge pipe is located in the combustion box 1 and is located in the combustion chamber, so as to pass the waste generated during the combustion process.

[0029] The combustion box 1 is fixedly equipped with a coil 4, which corresponds to the anode head of the anode member 12. The coil 4 is used to generate a strong electromagnetic field, thereby controlling a DC air plasma with stable power.

[0030] The support plate 9 is slidably mounted in the combustion box 1, and the support plate 9 is located in the storage chamber of the combustion box 1. A slide groove 19 is cut on the support plate 9, and a limit block is fitted in the slide groove 19, and a fixed slider 14 is welded on the limit block. Figure 3 As shown, a T-shaped mounting groove is chiseled on the slider 14, and a T-shaped mounting plate is limitedly slidably matched in the mounting groove. A cathode member 13 for pulling an arc is fixedly mounted on the mounting plate, and a cathode head is fixedly mounted on the end of the cathode member 13 away from the support plate 9.

[0031] like Figure 2 As shown, the cathode member 13 slides through the partition 11 and is inserted into the insertion slot in the anode member 12. The cathode head of the cathode member 13 and the anode head of the anode member 12 are electrically connected after they touch each other, and an arc is generated when the cathode head of the cathode member 13 and the anode head of the anode member 12 are out of contact.

[0032] The slider 14 is equipped with a fastener, which is limitedly matched with the mounting plate so that the cathode member 13 can be disassembled and assembled on the slider 14. The fastener includes a bolt 10, which penetrates the slider 14 and extends into the mounting groove of the slider 14. The bolt 10 is threadedly connected to the slider 14 and abuts against the mounting plate to limit the position.

[0033] The first screw rod 8 is rotatably mounted in the storage chamber of the combustion box 1, and the first screw rod 8 is arranged along the sliding direction of the support plate 9. One end of the first screw rod 8 is rotatably connected to the partition plate 11, and the other end is rotatably connected to the combustion box 1. The first screw rod 8 passes through the support plate 9 and is threadedly connected to the support plate 9. It is used to push the support plate 9 to slide closer to or away from the partition plate 11.

[0034] The motor 7 is fixed by bolts on the combustion box 1. The output shaft of the motor 7 rotates and penetrates into the combustion box 1 and is coaxially fixedly connected with the first screw rod 8 to drive the first screw rod 8 to rotate.

[0035] The storage chamber of the combustion box 1 is equipped with a limiter, and the support plate 9 and the limiter are limited and slidably matched to ensure that when the first screw rod 8 pushes the support plate 9 to slide, the support plate 9 does not rotate with the first screw rod 8. The limiter includes a slide bar 17, and the slide bar 17 is arranged along the sliding direction of the support plate 9. One end of the slide bar 17 is fixedly connected to the partition plate 11, and the other end is fixedly connected to the combustion box 1. The slide bar 17 passes through the support plate 9, and the support plate 9 and the slide bar 17 are limited and slidably matched.

[0036] A replacement port is cut on the combustion box 1, and the replacement port is connected to the storage chamber of the combustion box 1 and the outside of the combustion box 1. Figure 1 As shown, a cover plate 6 is slidably mounted in the part-changing opening, and the cover plate 6 is used to block or open the part-changing opening. The cover plate 6 is slidably matched with the combustion box 1 in a limited position.

[0037] like Figure 2 As shown, the first transmission member and the second transmission member are installed in the storage room of the combustion box 1. The input ends of the first transmission member and the second transmission member are both transmission-connected to the support plate 9. The output end of the first transmission member is transmission-connected to the slider 14, which is used to drive the slider 14 to move to the part-changing port. The output end of the second transmission member is transmission-connected to the cover plate 6, which is used to drive the cover plate 6 to block or open the part-changing port.

[0038] like Figure 2 and Figure 3As shown, the first transmission member includes a second rack 22, a first gear 16 as an input end, and a second screw 15 as an output end. The second rack 22 is opposite to the replacement port, and the second rack 22 is welded and fixed on the inner wall of the storage chamber of the combustion box 1 and arranged along the sliding direction of the support plate 9. The second screw 15 is located in the slide groove 19 and is rotatably connected to the support plate 9. The second screw 15 passes through the limit block in the slide groove 19 and is threadedly connected to the limit block. The first gear 16 is rotatably assembled on the support plate 9 and is coaxially fixedly connected to the second screw 15. The first gear 16 meshes with the second rack 22 when in contact, so as to drive the first gear 16 to rotate.

[0039] The second transmission member includes a second gear 20, a first rack 21 as an input end, and a third screw 18 as an output end. The first rack 21 is fixedly connected to the support plate 9 and arranged along the sliding direction of the support plate 9. The third screw 18 is rotationally connected to the combustion box 1, and the third screw 18 passes through a connecting block, which is fixedly connected to the cover plate 6. The third screw 18 is threadedly connected to the connecting block. It is used to drive the connecting block to slide along the replacement port. The second gear 20 is coaxially fixedly connected to the third screw 18, and the first rack 21 meshes with the second gear 20 when in contact, so as to drive the second gear 20 to rotate.

[0040] A clearance hole is cut on the combustion box 1, and the first rack 21 slides through the clearance hole.

[0041] Working principle: When in use, start the motor 7, the output shaft of the motor 7 drives the first screw 8 to rotate, and the first screw 8 pushes the support plate 9 to slide close to the partition 11. The support plate 9 drives the slider 14 to move close to the partition 11, and the slider 14 drives the mounting plate to move close to the partition 11. The mounting plate drives the cathode component 13 to be inserted into the insertion slot of the anode component 12. The cathode component 13 drives the cathode head to contact the anode head in the insertion slot of the anode component 12. At this time, the motor 7 stops working.

[0042] Then the output shaft of the motor 7 is reversed and pushes the support plate 9 to slide slowly in the direction away from the partition 11. The support plate 9 drives the slider 14 to move slowly and synchronously in the direction away from the partition 11. The slider 14 drives the mounting plate to move slowly and synchronously in the direction away from the partition 11. The mounting plate drives the cathode member 13 to slide slowly in the direction away from the anode head in the insertion slot of the anode member 12, and the cathode head on the cathode member 13 is disengaged from the anode head in the insertion slot of the anode member 12 and slowly moves away from the anode head after disengagement.

[0043] At this time, an arc is drawn between the cathode head and the anode head. Since the sliding of the support plate 9 is controlled by the first screw 8, the distance between the cathode head and the anode head is controllable, and a stable arc can be drawn. At the same time, the coil 4 is energized to form a strong electromagnetic field. Jet air is introduced into the jet air inlet pipe 5, and the jet air contacts the arc and forms a high-temperature plasma with constant power under the action of a strong magnetic field. Then the high-temperature plasma contacts the coal powder sprayed from the coal powder feed pipe 3 and ignites the coal powder, and the flame generated by the combustion of the coal powder is ejected from the flame hole 2. Thus, ignition is achieved.

[0044] When the cathode member 13 needs to be replaced after a period of use, the motor 7 is started. The output shaft of the motor 7 drives the first screw 8 to rotate, and the first screw 8 pushes the support plate 9 to slide away from the partition 11. In this process, the support plate 9 drives the first gear 16 to move away from the partition 11, and drives the first rack 21 to move away from the partition 11.

[0045] When the support plate 9 moves to overlap with the replacement port, the first gear 16 contacts and meshes with the second rack 22, and the first rack 21 contacts and meshes with the second gear 20, and the cathode 13 has completely slid out of the insertion slot of the anode 12. Thereafter, as the support plate 9 continues to slide, the second rack 22 pushes the first gear 16 to rotate, and the first rack 21 pushes the second gear 20 to rotate.

[0046] When the first gear 16 rotates, the first gear 16 drives the second screw 15 to rotate, the second screw 15 pushes the limit block to slide closer to the replacement port, the limit block drives the slider 14 to slide closer to the replacement port, the slider 14 drives the mounting plate to slide closer to the replacement port, and the mounting plate drives the cathode 13 to move closer to the replacement port.

[0047] When the second gear 20 rotates, the second gear 20 drives the third screw rod 18 to rotate, and the third screw rod 18 pushes the connecting block to move closer to the second gear 20, and the connecting block drives the cover plate 6 to slide and open the component replacement port.

[0048] When the cover plate 6 completely opens the replacement port, the slider 14 just moves to the end of the support plate 9 close to the replacement port. At the same time, the cathode 13 is completely exposed at the replacement port. At this time, the motor 7 is turned off.

[0049] Then, the bolt 10 is screwed, and the bolt 10 is disengaged from the mounting plate and moves away from the mounting plate. The mounting plate is released from being tightened and can slide freely in the mounting groove. Then, the cathode member 13 is pulled, and the cathode member 13 drives the mounting plate to slide out of the mounting groove, thereby removing the cathode member 13.

[0050] Then, the mounting plate with the new cathode member 13 is slid into the mounting groove and the bolts 10 are tightened after the cathode member 13 is completely slid in, so that the bolts 10 are pressed against the mounting plate, thereby completing the assembly of the new cathode member 13 .

[0051] After that, the motor 7 is started again, and the output shaft of the motor 7 drives the first screw 8 to rotate, and the first screw 8 pushes the support plate 9 to move closer to the partition 11. The support plate 9 drives the new cathode member 13 to move closer to the anode member 12.

[0052] During this process, the first rack 21 drives the second gear 20 to reverse, and the second rack 22 drives the first gear 16 to reverse. The second gear 20 drives the third screw 18 to reverse, so that the cover plate 6 blocks the replacement port. The first gear 16 drives the second screw 15 to reverse, so that the slider 14 drives the cathode 13 to align with the anode 12 insertion slot.

[0053] When the cover plate 6 completely blocks the replacement port, the cathode member 13 faces the insertion slot of the anode member 12. At this time, the motor 7 is turned off. At the same time, the first gear 16 is disconnected from the second rack 22, and the first rack 21 is disconnected from the second gear 20.

[0054] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plasma burner comprising a combustion box (1), characterized in that: A partition (11) is fixedly arranged in the combustion box (1), and an anode component (12) is fixedly installed on the partition (11); a support plate (9) is slidably arranged in the combustion box (1), and a cathode component (13) is detachably installed on the support plate (9) through a fastener; a first screw rod (8) is rotatably arranged in the combustion box (1); one end of the first screw rod (8) is rotatably connected to the partition (11), and the other end is rotatably connected to the box body of the combustion box (1); the first screw rod (8) passes through the support plate (9) and is threadedly connected to the support plate (9); a limit piece is arranged in the combustion box (1), and the support plate (9) is slidably matched with the limit piece; the cathode component (13) is plug-fitted with the anode component (12).

2. The plasma burner according to claim 1, characterized in that: A motor (7) is fixedly arranged on the combustion box (1), and an output shaft of the motor (7) is coaxially fixedly connected to a first screw rod (8).

3. The plasma burner according to claim 1, characterized in that: The limiting member comprises a sliding rod (17); one end of the sliding rod (17) is fixedly connected to the partition (11), and the other end is fixedly connected to the body of the combustion box (1); the sliding rod (17) passes through the supporting plate (9), and the supporting plate (9) and the sliding rod (17) are limitedly slidably matched.

4. The plasma burner according to claim 1, characterized in that: The fastener comprises a bolt (10); a slider (14) is arranged on the support plate (9); a mounting groove is provided on the slider (14); a mounting plate is slidably arranged in the mounting groove; the cathode component (13) is fixedly arranged on the mounting plate; the bolt (10) is threadedly inserted into the slider (14) and extends into the mounting groove; the bolt (10) is threadedly connected to the slider (14) and abuts against the slider (14) to limit the position.

5. The plasma burner according to claim 4, characterized in that: The combustion box (1) is provided with a component replacement opening, and a cover plate (6) is slidably installed in the component replacement opening; a first transmission member and a second transmission member are arranged in the combustion box (1), and input ends of the first transmission member and the second transmission member are both transmission-connected to the support plate (9); the output end of the first transmission member is transmission-connected to the mounting plate, and the output end of the second transmission member is transmission-connected to the cover plate (6).

6. The plasma burner according to claim 5, characterized in that: The first transmission member comprises a second rack (22), a first gear (16) as an input end, and a second screw (15) as an output end; the first gear (16) is rotatably arranged on a support plate (9), the second rack (22) is fixedly arranged on an inner wall of a combustion box (1) along a sliding direction of the support plate (9), and the first gear (16) and the second rack (22) are in contact meshing cooperation; a slide groove (19) is provided on the support plate (9), and the slide block (14) is limitedly slidably cooperated with the slide groove (19); a second screw (15) is rotatably arranged in the slide groove (19), and the second screw (15) is coaxially fixedly connected with the first gear (16); the second screw (15) passes through the slide block (14) and is threadedly connected with the slide block (14).

7. The plasma burner according to claim 5, characterized in that: The second transmission member comprises a second gear (20), a first rack (21) as an input end, and a third screw rod (18) as an output end; the first rack (21) is fixedly connected to the support plate (9) and is arranged along the sliding direction of the support plate (9); the third screw rod (18) is rotatably arranged in the component replacement port and is arranged along the sliding direction of the cover plate (6); the third screw rod (18) is threadedly connected to the cover plate (6); the second gear (20) is coaxially fixedly connected to the third screw rod (18); and the second gear (20) is in contact meshing cooperation with the first rack (21).

8. The plasma burner according to claim 1, characterized in that: The combustion box (1) is fixedly connected to the jet air inlet pipe (5); the anode component (12) is provided with a plug-in slot, and the cathode component (13) is plugged into the plug-in slot; the end of the anode component (12) away from the partition (11) is fixedly provided with an anode head, and the anode head is located in the slot; the end of the cathode component (13) away from the support plate (9) is fixedly provided with a cathode head, and the cathode head and the anode head correspond to each other and touch each other; the anode component (12) is provided with a through hole, and the through hole connects the plug-in slot and the inside of the combustion box (1).

9. The plasma burner according to claim 8, characterized in that: The combustion box (1) is fixedly connected to a pulverized coal feed pipe (3); and the combustion box (1) is provided with a flame injection hole (2).

10. The plasma burner according to claim 8, characterized in that: A coil (4) is fixedly arranged on the combustion box (1), and the coil (4) corresponds to the anode head of the anode member (12).

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