A fuel-fired burner with internal exhaust gas recirculation

Abstract

The application is suitable for the technical field of combustor, and provides a fuel incineration combustor with internal exhaust gas recirculation.The application comprises an outer cover, a fuel assembly is clamped at one end of the outer cover, a separation assembly is inserted into the inner part of the outer cover, a discharge assembly is slidably connected to the inner wall of the separation assembly, and the discharge assembly is fixedly connected to the outer cover.The exhaust gas formed by combustion between the discharge cylinder in the discharge assembly and the second circular cone wall enters the sealed cavity formed by the outer cover and the separation assembly, and is finally mixed with the air in the sealed cavity, so that the recirculation of the exhaust gas of the device is realized;the rotation of the mixing element accelerates the mixing degree of the exhaust gas and the combustion air, reduces the production of harmful oxidizing gas in the exhaust gas, and the atomization of the atomizer, the first circular cone wall is set to gradually increase from bottom to top, so that the atomized fuel has a divergent trend, thereby improving the fuel combustion rate and enabling the fuel to be fully combusted.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of burners, in particular to a fuel incineration burner with internal exhaust gas recirculation. BACKGROUND

[0002] The fuel incineration burner with internal exhaust gas recirculation is that the exhaust gas is transported back to the combustion air inlet from the exhaust chimney, and at the combustion air inlet, the exhaust gas can enter the combustion air fan to mix with the combustion air, and the exhaust gas and air mixture is sent to the air inlet of the burner.

[0003] The fuel incineration burners on the market have the following defects in use:

[0004] The exhaust gas after combustion cannot be recycled and combusted again, resulting in harmful oxidizing gas products in the exhaust gas being discharged into the external environment, thereby polluting the external environment;

[0005] The contact area between the fuel and the air fuel during combustion is not sufficient, which can easily lead to insufficient combustion of the fuel and reduce the fuel combustion rate. SUMMARY

[0006] In view of the deficiencies in the prior art, the purpose of the present application is to provide a fuel incineration burner with internal exhaust gas recirculation, which realizes exhaust gas recycling, improves the fuel combustion rate, allows the fuel to be fully combusted, and reduces the generation of harmful gases:

[0007] To achieve the above purpose, the present application provides the following technical scheme: an external cover is provided; a fuel assembly is connected to one end of the external cover; a partition assembly is inserted into the internal cover; an exhaust assembly is slidably connected to the inner wall of the partition assembly; and the exhaust assembly is fixedly connected to the external cover.

[0008] The fuel assembly comprises a clamping ring, a fixed ring seat, a mixing piece and a fuel pipe; the fixed ring seat is located inside the clamping ring and is clamped and matched with the clamping ring; the mixing piece is rotatably connected between the clamping ring and the fixed ring seat, and the mixing piece is rotatably connected with the clamping ring and the fixed ring seat; and the fuel pipe is located inside the fixed ring seat and is clamped and matched with the fixed ring seat.

[0009] The present application is further provided: the clamping ring is fixed with an annular clamping rail at the bottom; a first sealing groove is formed in the top of one end surface of the external cover; the annular clamping rail is clamped and matched with the first sealing groove; the clamping ring and the external cover are mutually attached at one end, and are fixedly connected by bolts.

[0010] The clamping ring is fixed with a plurality of support baffles at the top; and the support baffles are fixed with a U-shaped groove at the top.

[0011] The top of the fixed ring seat is fixed with a plurality of L-shaped fixing rods; the L-shaped fixing rods are in clasp joint with the U-shaped groove channel, and the two are fixedly connected through bolts.

[0012] The top of the fixed ring seat is provided with a second sealing groove; the top of the fixed ring seat is fixed with a servo motor; the output shaft of the servo motor is fixed with a driving gear.

[0013] The mixing element comprises a rotating cylinder; the first fitting ring is fixed on the circumferential surface of the rotating cylinder; the gear ring is arranged on the inner wall of the rotating cylinder close to one end surface; the gear ring is in meshing engagement with the driving gear.

[0014] A plurality of arc-shaped stirring plates are fixed on the other end surface of the rotating cylinder.

[0015] The fuel pipe is fixed with a fixed ring on the circumferential surface; the fixed ring is fixed with an annular rail on one side; the annular rail is in clasp joint with the second sealing groove.

[0016] The inner wall of the fixed ring seat is fixed with a sliding guide groove; the fixed ring is fixed with a plurality of guide sliding columns on one end; the guide sliding columns are in sliding connection with the sliding guide groove.

[0017] The fuel pipe is connected with an atomizer on one end; the fuel pipe is fixed with a protective cover on the circumferential surface close to one end surface; the inner wall of the protective cover is fixed with a first circular table wall; the first circular table wall has a gradually increasing trend from bottom to top; a plurality of atomizing through holes are formed in the inner bottom of the first circular table wall.

[0018] The outer cover is communicated with an air pipe on the circumferential surface; a plurality of insertion columns are fixed on one end surface of the inner part of the outer cover.

[0019] The separation assembly comprises a separation cylinder; the inner wall of the separation cylinder is fixed with an air injection cylinder; a plurality of insertion rods are fixed on one end surface of the separation cylinder; an insertion hole is formed in one end of the insertion rod; the insertion hole is in insertion joint with the insertion column.

[0020] The outer cover is fixed with an annular clasp ring on one end surface; a third sealing groove is formed in one end of the annular clasp ring; the outer cover is communicated with symmetrical waste gas inlet pipes on the circumferential surface away from the circumferential surface of the air pipe.

[0021] The inner wall of the separation cylinder is fixed with a second fitting ring.

[0022] The discharge assembly comprises a channel cylinder; the third fitting ring is fixed on one end of the channel cylinder; the second fitting ring and the third fitting ring are in mutual fitting.

[0023] The other end of the channel cylinder is fixed with a discharge cylinder; the outer peripheral side of the discharge cylinder is fixed with a sealing ring; the sealing ring is in clamping connection with the third sealing groove.

[0024] The outer peripheral side of the discharge cylinder is fixed with two symmetrical support vertical plates; the outer peripheral side of the discharge cylinder is threadedly connected with two symmetrical igniters.

[0025] One end of the two support vertical plates is fixed with a fixed plate; one side of the fixed plate is fixedly connected with one end of the external cover through bolts.

[0026] The inner wall of the discharge cylinder is fixed with a second circular table wall; one end of the second circular table wall is provided with a steel wire mesh.

[0027] The side of the support vertical plate is connected with a waste gas guide pipe; one end of the waste gas guide pipe is communicated with the outer peripheral side of the discharge cylinder; the other end of the waste gas guide pipe is connected with a suction fan; the output end of the suction fan is communicated with a waste gas leading-out pipe; the waste gas leading-out pipe is fixedly connected with the waste gas inlet pipe.

[0028] The advantages of the present application are:

[0029] 1、The present application starts the suction fan, so that the waste gas formed by combustion between the discharge cylinder and the second circular table wall in the discharge assembly enters the sealing cavity formed by the external cover and the separation assembly through the waste gas guide pipe, the waste gas leading-out pipe and the waste gas inlet pipe in turn, and finally mixes with the air in the sealing cavity, realizing the recirculation of the device waste gas.

[0030] 2、The present application starts the servo motor, drives the gear to rotate, drives the gear ring to rotate, so that the mixing piece rotates between the clamping ring and the fixed ring seat, and is stirred by the rotation of the arc-shaped stirring plate in the rotating mixing piece, so as to accelerate the mixing degree of the waste gas and the combustion air, which enters the discharge assembly through the air injection cylinder for multiple cycle combustion, reducing the generation of harmful oxide gas in the waste gas.

[0031] 3、The present application passes the fuel from the fuel pipe, atomizes it through the atomizer, enters the first circular table wall through the atomizing through hole, starts the igniter, and performs ignition operation on the atomized fuel, increases the contact area of the atomized fuel and air, improves the fuel combustion rate, so that the fuel can be fully burned, reducing the generation of harmful gas.

[0032] 4、The present application sets the first circular table wall to gradually increase from bottom to top, so that the atomized fuel has a divergent trend, thereby improving the fuel combustion rate and enabling the fuel to be fully burned.

[0033] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the description of the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0035] Figure 1 It is a structural schematic diagram of the present application.

[0036] Figure 2 It is a structural schematic diagram of the internal structure of the present application.

[0037] Figure 3 It is a structural schematic diagram of the external cover.

[0038] Figure 4 It is a structural schematic diagram of the internal structure of the external cover.

[0039] Figure 5 It is a structural schematic diagram of the fuel assembly.

[0040] Figure 6 It is a structural schematic diagram of the clamping ring.

[0041] Figure 7 It is a structural schematic diagram of the fixed ring seat.

[0042] Figure 8 It is a structural schematic diagram of the mixing piece.

[0043] Figure 9 It is a structural schematic diagram of the fuel pipe.

[0044] Figure 10 It is a structural schematic diagram of the cross section of the fuel pipe.

[0045] Figure 11 It is a structural schematic diagram of the separation assembly.

[0046] Figure 12 It is a structural schematic diagram of the internal structure of the separation assembly.

[0047] Figure 13 It is a structural schematic diagram of the discharge assembly.

[0048] Figure 14 It is a structural schematic diagram of the internal structure of the discharge assembly.

[0049] In the drawings, the component list represented by each reference sign is as follows:

[0050] 1, outer cover, 2, fuel assembly, 3, separation assembly, 4, exhaust assembly, 5, clamping ring, 6, fixed ring seat, 7, mixing piece, 8, fuel pipe, 101, first sealing groove, 102, air duct, 103, insertion column, 104, annular clamping ring, 105, third sealing groove, 106, exhaust air inlet pipe, 301, separation cylinder, 302, air injection cylinder, 303, insertion rod, 304, insertion hole, 305, second fitting ring, 401, channel cylinder, 402, third fitting ring, 403, exhaust cylinder, 404, sealing ring, 405, support vertical plate, 406, igniter, 407, fixed plate, 408, second circular table wall, 409, steel wire mesh, 410, exhaust guide pipe, 411, air suction fan, 412, exhaust guide pipe, 501, annular clamping rail, 502, support baffle, 503, U-shaped channel, 601, L-shaped fixed rod, 602, second sealing groove, 603, servo motor, 604, drive gear, 605, sliding guide groove, 701, rotating cylinder, 702, first fitting ring, 703, gear ring, 704, arc-shaped stirring plate, 801, fixed ring, 802, annular rail, 803, guide slide column, 804, atomizer, 805, protective cover, 806, first circular table wall, 807, atomizing through hole. DETAILED DESCRIPTION

[0051] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0052] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0053] In the present application, unless otherwise specified, the orientation such as "up, down" is generally with respect to the direction shown in the drawings, or with respect to the vertical, perpendicular or gravity direction; similarly, for the convenience of understanding and description, "left, right" is generally with respect to the left and right shown in the drawings; "inner, outer" refers to the inner and outer with respect to the contour of each component itself, but the above orientation words are not used to limit the present application.

[0054] Embodiment one

[0055] Please refer to Figures 1-14 The present application provides the following technical solutions:

[0056] Specifically, the present application is a fuel incineration burner with internal exhaust gas recirculation, comprising an outer cover 1; the outer cover 1 is connected with a fuel assembly 2 at one end; the outer cover 1 is inserted with a separation assembly 3; the inner wall of the separation assembly 3 is slidably connected with a discharge assembly 4; the discharge assembly 4 is fixedly connected with the outer cover 1; the fuel assembly 2 comprises a clamping ring 5, a fixed ring seat 6, a mixing piece 7 and a fuel pipe 8; the fixed ring seat 6 is located inside the clamping ring 5 and the two are clamped together; the mixing piece 7 is rotatably connected between the clamping ring 5 and the fixed ring seat 6; the fuel pipe 8 is located inside the fixed ring seat 6 and the two are clamped together.

[0057] The working principle of the embodiment is as follows:

[0058] The combustion air is introduced into the air pipe 102 by the combustion air fan, so that the combustion air enters the sealed cavity formed by the outer cover 1 and the separation assembly 3, then the fuel pipe 8 is introduced into the fuel, the fuel is atomized by the atomizer 804 and enters the first circular wall 806 through the atomizing hole 807, then the igniter 406 is started to ignite the atomized fuel, the exhaust gas formed by the combustion of the fuel is introduced into the sealed cavity formed by the outer cover 1 and the separation assembly 3 through the exhaust gas duct 410, the exhaust gas outlet pipe 412 and the exhaust gas inlet pipe 106 in sequence, and finally mixed with the air in the sealed cavity, then the servo motor 603 is started to drive the gear 604 to rotate, which drives the gear ring 703 to rotate, so that the mixing piece 7 rotates between the clamping ring 5 and the fixed ring seat 6, and the rotation of the arc-shaped stirring plate 704 in the mixing piece 7 is used for stirring, so as to accelerate the mixing degree of the exhaust gas and the combustion air, and the air injection cylinder 302 is introduced into the discharge assembly 4 for multiple cycle combustion, so as to realize the recycling of the exhaust gas, reduce the generation of harmful oxide gas in the exhaust gas, increase the contact area of the atomized fuel and the air, improve the fuel combustion rate, so that the fuel can be fully combusted, and the generation of harmful gas is reduced.

[0059] Embodiment two

[0060] Please refer to Figures 1-14The second embodiment is improved on the basis of the first embodiment. Specifically, the bottom of the clamping ring 5 is fixed with an annular clamping rail 501; the top of one end face of the outer cover 1 is provided with a first sealing groove 101; the annular clamping rail 501 is clamped and matched with the first sealing groove 101; the clamping ring 5 is mutually attached to one end of the outer cover 1, and the two are fixedly connected through bolts; the top of the clamping ring 5 is fixed with a plurality of support baffles 502; the top of the support baffle 502 is fixed with a U-shaped groove 503; the top of the fixed ring seat 6 is fixed with a plurality of L-shaped fixed rods 601; the L-shaped fixed rods 601 are clamped and matched with the U-shaped groove 503, and the two are fixedly connected through bolts; the top of the fixed ring seat 6 is provided with a second sealing groove 602; the top of the fixed ring seat 6 is fixed with a servo motor 603; the output shaft of the servo motor 603 is fixed with a drive gear 604; the mixing piece 7 comprises a rotating cylinder 701; the first attachment ring 702 is fixed on the side surface of the rotating cylinder 701; the gear ring 703 is arranged on the inner wall of the rotating cylinder 701 close to one end face; the gear ring 703 is engaged with the drive gear 604; the rotating cylinder 701 is fixed with a plurality of arc-shaped stirring plates 704 on the other end face; the fixed ring 801 is fixed on the side surface of the fuel pipe 8; the annular rail 802 is fixed on one side of the fixed ring 801; the annular rail 802 is clamped with the second sealing groove 602; the sliding guide groove 605 is fixed on the inner wall of the fixed ring seat 6; the fixed ring 801 is fixed with a plurality of guide sliding columns 803 on one end; the guide sliding columns 803 are slidingly connected with the sliding guide groove 605; the fuel pipe 8 is connected with an atomizer 804 on one end; the fixed ring 801 is fixed with a protective cover 805 on the side surface close to one end face; the first circular cone wall 806 is fixed on the inner wall of the protective cover 805; the first circular cone wall 806 gradually increases from bottom to top; a plurality of atomizing through holes 807 are formed in the inner bottom of the first circular cone wall 806.

[0061] One specific application of the embodiment is:

[0062] Put the card ring 5 in the fixed ring seat 6 outer top, the rotating cylinder 701 in the mixing piece 7 is rotatably connected between the fixed ring seat 6 and the card ring 5, and the first side of the fixed first side of the rotating cylinder 701 is matched with the top of the fixed ring seat 6 and the card ring 5 during the connection process. Subsequently, the L-shaped fixing rod 601 is matched with the U-shaped groove 503, and then the L-shaped fixing rod 601 is fixedly connected with the U-shaped groove 503 through the bolt. After the connection, the bottom of the rotating cylinder 701 and the bottom of the U-shaped groove 503 are in the state of mutual adhesion. Then the annular rail 802 in the fuel pipe 8 is butted with the second sealing groove 602 opened at the top of the fixed ring seat 6. The sealing gasket is put into the second sealing groove 602 during the butt joint to maintain the sealing property. After the butt joint, the fixed ring 801 is fixedly connected with the fixed ring seat 6 through the bolt, so that the fixed ring seat 6, the card ring 5 and the fuel pipe 8 are fixedly connected with each other, and the mixing piece 7 is rotatably connected between the card ring 5 and the fixed ring seat 6, so as to form a complete fuel assembly 2. Then the card ring 5 is fixedly connected with one end surface of the external cover 1 through the butt joint between the annular card rail 501 and the first sealing groove 101. During the butt joint, the sealing gasket is put into the first sealing groove 101 to maintain the air tightness. Finally, the card ring 5 is fixedly connected with one end surface of the external cover 1 through the bolt to realize the mutual connection between the fuel assembly 2 and one end surface of the external cover 1. After the connection and fixation are completed, fuel is introduced into the fuel pipe 8. The atomized fuel enters the first circular cone wall 806 through the atomizing through hole 807, the igniter 406 is started, and the atomized fuel is ignited. The first circular cone wall 806 is arranged to gradually increase from bottom to top, the contact area of the atomized fuel and air is increased, the fuel combustion rate is improved, the fuel can be fully combusted, and the generation of harmful gases is reduced. In addition, when the waste gas generated during combustion is circulated into the inside of the external cover 1, the combustion air is introduced into the inside of the external cover 1. At this time, the servo motor 603 is started, the gear 604 is driven to rotate, the gear ring 703 is driven to rotate, the mixing piece 7 is rotated between the card ring 5 and the fixed ring seat 6, the rotation of the arc-shaped stirring plate 704 in the rotating mixing piece 7 is stirred, so as to accelerate the mixing degree of the waste gas and the combustion air. The air injection cylinder 302 enters the exhaust assembly 4 for multiple cycle combustion, and the generation of harmful oxide gases in the waste gas is reduced.

[0063] Example three

[0064] Please refer to Figures 1-14The second embodiment is improved on the basis of the first embodiment, and is specifically improved as follows: the outer periphery side of the outer cover 1 is communicated with an air duct 102; one end surface of the outer cover 1 is fixed with a plurality of insertion columns 103; the separation assembly 3 comprises a separation cylinder 301; the inner wall of the separation cylinder 301 is fixed with an air injection cylinder 302; one end surface of the separation cylinder 301 is fixed with a plurality of insertion rods 303; one end of the insertion rod 303 is provided with an insertion hole 304; the insertion hole 304 is inserted and matched with the insertion column 103; one end surface of the outer cover 1 is fixed with a ring-shaped clamping ring 104; one end of the ring-shaped clamping ring 104 is provided with a third sealing groove 105; the outer periphery side of the outer cover 1, away from the outer periphery side of the air duct 102, is communicated with symmetric waste gas inlet pipes 106; the inner wall of the separation cylinder 301 is fixed with a second fitting ring 305; the discharge assembly 4 comprises a channel cylinder 401; one end of the channel cylinder 401 is fixed with a third fitting ring 402; the second fitting ring 305 and the third fitting ring 402 are mutually fitted; the other end of the channel cylinder 401 is fixed with a discharge cylinder 403; the outer periphery side of the discharge cylinder 403 is fixed with a sealing ring 404; the sealing ring 404 is clamped and matched with the third sealing groove 105; the outer periphery side of the discharge cylinder 403 is fixed with two symmetric support vertical plates 405; the outer periphery side of the discharge cylinder 403 is threadedly connected with two symmetric igniters 406; one end of the support vertical plate 405 is fixed with a fixed plate 407; one side of the fixed plate 407 is fixedly connected with one end of the outer cover 1 through a bolt; the inner wall of the discharge cylinder 403 is fixed with a second circular table wall 408; one end of the second circular table wall 408 is provided with a steel wire mesh 409; one side of the support vertical plate 405 is connected with a waste gas duct 410; one end of the waste gas duct 410 is communicated with the outer periphery side of the discharge cylinder 403; the other end of the waste gas duct 410 is connected with a suction fan 411; the output end of the suction fan 411 is communicated with a waste gas outlet pipe 412; the waste gas outlet pipe 412 is fixedly connected with the waste gas inlet pipe 106.

[0065] One specific application of the embodiment is as follows:

[0066] The air pipe 102 communicated with the outer peripheral side of the outer cover 1 is connected with the output end of the external combustion air fan, so as to improve the external combustion air of the whole device, then the partition assembly 3 is slid to the inner wall of the outer cover 1, until the plug-in hole 304 opened at one end of the plug-in rod 303 in the partition assembly 3 is plugged with the plug-in column 103 fixed to the one end face inside the outer cover 1, and then the plug-in fixing between the partition assembly 3 and the outer cover 1 is completed through the threaded rotation connection between the external nut and the plug-in column 103, then the third abutting ring 402 in the exhaust assembly 4 is abutted with the second abutting ring 305, and at the same time the sealing ring 404 fixed to the outer peripheral side of the exhaust cylinder 403 is clamped with the third sealing groove 105, and the sealing gasket is placed in the third sealing groove 105, the fixed plate 407 on one side is fixed and connected with the other end face of the outer cover 1 through the bolt, and at the same time the two exhaust gas outlet pipes 412 are respectively butted with the two exhaust gas inlet pipes 106, and the two end flanges are fixed and connected through the bolt, and the sealing gasket is placed on the connecting flange during the connecting process to keep airtightness, so as to realize the fixed connection between the exhaust assembly 4 and the other end face of the outer cover 1, after the fixing is completed, the device inside is provided with sufficient oxygen through the external combustion air fan, and then the air pipe 102 enters the sealing cavity formed by the outer cover 1 and the partition assembly 3, then the suction fan 411 is started, so that the exhaust gas formed by the combustion between the exhaust cylinder 403 in the exhaust assembly 4 and the second circular table wall 408 enters the sealing cavity formed by the outer cover 1 and the partition assembly 3 through the exhaust gas pipe 410, the exhaust gas outlet pipe 412 and the exhaust gas inlet pipe 106 in turn, and finally mixes with the air in the sealing cavity, so as to realize the recirculation of the exhaust gas of the device.

[0067] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0068] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0069] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and the above-described accompanying drawings are used only to distinguish similar objects and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0070] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0071] The above only describes the preferred embodiments of the present application and the protection scope of the present application is not limited to the above-described embodiments. Any technical solution falling within the concept of the present application shall be included in the protection scope of the present application. It should be noted that for ordinary skilled in the art, several improvements and refinements without departing from the principle of the present application shall be considered as the protection scope of the present application.

Claims

1. A fuel incineration burner with internal exhaust gas recirculation, comprising an outer cover (1); Characterized in that: One end of the outer cover (1) is clamped with a fuel assembly (2); the inner part of the outer cover (1) is inserted with a separation assembly (3); the inner wall of the separation assembly (3) is slidingly connected with a discharge assembly (4); the discharge assembly (4) is fixedly connected with the outer cover (1); The fuel assembly (2) comprises a clamping ring (5), a fixed ring seat (6), a mixing piece (7) and a fuel pipe (8); the fixed ring seat (6) is located inside the clamping ring (5) and the two are clamped together; the mixing piece (7) is rotatably connected between the clamping ring (5) and the fixed ring seat (6), and the mixing piece (7) is rotatably connected with the clamping ring (5) and the fixed ring seat (6); the fuel pipe (8) is located inside the fixed ring seat (6), and the two are clamped together; The bottom of the clamping ring (5) is fixed with an annular clamping rail (501); The top of one end surface of the outer cover (1) is provided with a first sealing groove (101); The annular clamping rail (501) is clamped with the first sealing groove (101); the clamping ring (5) and one end of the outer cover (1) are mutually adhered, and the two are fixedly connected by bolts; The top of the clamping ring (5) is fixed with a plurality of support baffles (502); the top of the support baffle (502) is fixed with a U-shaped groove (503); The top of the fixed ring seat (6) is fixed with a plurality of L-shaped fixed rods (601); the L-shaped fixed rod (601) is clamped with the U-shaped groove (503), and the two are fixedly connected by bolts; The top of the fixed ring seat (6) is provided with a second sealing groove (602); the top of the fixed ring seat (6) is fixed with a servo motor (603); the output shaft of the servo motor (603) is fixed with a drive gear (604); The mixing piece (7) comprises a rotating cylinder (701); the first fitting ring (702) is fixed on the side surface of the rotating cylinder (701); the gear ring (703) is arranged on the inner wall of the rotating cylinder (701) near one end surface; the gear ring (703) is engaged with the drive gear (604); The other end surface of the rotating cylinder (701) is fixed with a plurality of arc-shaped stirring plates (704); The side surface of the fuel pipe (8) is fixed with a fixed ring (801); one side of the fixed ring (801) is fixed with an annular rail (802); the annular rail (802) is clamped with the second sealing groove (602); The inner wall of the fixed ring seat (6) is fixed with a sliding guide groove (605); One end of the fixed ring (801) is fixed with a plurality of guide sliding columns (803); the guide sliding column (803) is slidingly connected with the sliding guide groove (605); One end of the fuel pipe (8) is connected with an atomizer (804); the side surface of the fuel pipe (8) is fixed with a protective cover (805) near one end surface; the inner wall of the protective cover (805) is fixed with a first circular table wall (806); the first circular table wall (806) has a gradually increasing trend from bottom to top; a plurality of atomizing through holes (807) are formed in the inner bottom of the first circular table wall (806).

2. A fuel-fired incinerator burner with internal exhaust gas recirculation according to claim 1, characterized in that The outer cover (1) is communicated with an air pipe (102) on the outer periphery; a plurality of insertion columns (103) are fixed on one end surface of the inner part of the outer cover (1); The separation assembly (3) comprises a separation cylinder (301); an air injection cylinder (302) is fixed on the inner wall of the separation cylinder (301); a plurality of insertion rods (303) are fixed on one end surface of the separation cylinder (301); an insertion hole (304) is formed on one end of the insertion rod (303); and the insertion hole (304) is inserted into the insertion column (103).

3. A fuel-fired incinerator burner with internal exhaust gas recirculation according to claim 2, characterized in that An annular clamping ring (104) is fixed on one end surface of the outer cover (1); a third sealing groove (105) is formed on one end of the annular clamping ring (104); and symmetrical waste gas inlet pipes (106) are communicated with the outer periphery of the air pipe (102) on the outer periphery of the outer cover (1).

4. A fuel-fired incinerator burner with internal exhaust gas recirculation according to claim 3, characterized in that A second clamping ring (305) is fixed on the inner wall of the separation cylinder (301); The discharge assembly (4) comprises a channel cylinder (401); a third clamping ring (402) is fixed on one end of the channel cylinder (401); and the second clamping ring (305) and the third clamping ring (402) are clamped with each other; A discharge cylinder (403) is fixed on the other end of the channel cylinder (401); a sealing ring (404) is fixed on the outer periphery of the discharge cylinder (403); and the sealing ring (404) is clamped with the third sealing groove (105).

5. A fuel-fired incinerator burner with internal exhaust gas recirculation according to claim 4, characterized in that Symmetrical two support vertical plates (405) are fixed on the outer periphery of the discharge cylinder (403); and symmetrical two igniters (406) are threadedly connected on the outer periphery of the discharge cylinder (403); One end of the two support vertical plates (405) is fixed with a fixed plate (407); and one side of the fixed plate (407) is fixedly connected with one end of the outer cover (1) through a bolt; A second circular table wall (408) is fixed on the inner wall of the discharge cylinder (403); and a steel wire mesh (409) is arranged on one end of the second circular table wall (408).

6. A fuel-fired incinerator burner with internal exhaust gas recirculation according to claim 5, characterized in that The support vertical plate (405) is connected with a waste gas guide pipe (410) on one side; one end of the waste gas guide pipe (410) is communicated with the outer periphery of the discharge cylinder (403); the other end of the waste gas guide pipe (410) is connected with a suction fan (411); the output end of the suction fan (411) is communicated with a waste gas outlet pipe (412); and the waste gas outlet pipe (412) is fixedly connected with the waste gas inlet pipe (106).

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