CN207760290U - A kind of dry coal powder gasification assembled nozzle - Google Patents

Abstract

The utility model discloses a kind of dry coal powder gasification assembled nozzles, relate generally to coal gasification field.Including coal dust burner, igniter burner, the igniter burner includes successively from inside to outside central tube, into cartridge, the first air inlet pipe, the first water inlet pipe, the first outer tube, the coal dust burner includes successively from inside to outside inner tube, the second air inlet pipe, into coal pipe, the second water inlet pipe, the second outer tube, the outer diameter of the internal diameter of said inner tube and the first outer tube is adapted, and first outer tube is inserted into inner tube.The beneficial effects of the utility model are：It integrally uses fabricated structure, can replace scaling loss component in time according to the service condition of device, can reduce waste, reduces production cost.

Description

A kind of dry coal powder gasification assembled nozzle

Technical field

The utility model is related to coal gasification field, specifically a kind of dry coal powder gasification assembled nozzle.

Background technology

Currently, existing pulverized coal gasification furnace is that igniter burner is inserted into coal dust burner mostly, pass through the two cooperation Mode feed intake, can be in lower pressure down-firing, and heat up, boost, after reaching certain condition, the coal dust that can put into operation is burnt Mouth, after coal dust burner jumps vehicle, igniter burner is still being run, and can continue the coal dust burner that puts into operation after system reparation, but It is that when burner long-play easily leads to scaling loss, and existing igniter burner mostly uses integral structure with coal dust burner, when After one of igniter burner or coal dust burner partial destruction, need integrally to replace igniter burner or coal dust burner, Cause a large amount of waste.

Utility model content

The purpose of this utility model is to provide a kind of dry coal powder gasification assembled nozzles, it integrally uses fabricated structure, Scaling loss component can be replaced in time according to the service condition of device, can reduce waste, reduce production cost.

The utility model to achieve the above object, is achieved through the following technical solutions：

A kind of dry coal powder gasification assembled nozzle, including coal dust burner, igniter burner, the igniter burner is from inside to outside successively Including central tube, into cartridge, the first air inlet pipe, the first water inlet pipe, the first outer tube, set on the outer wall of one end of the central tube There are the first support ring, the outer ring of first support ring to be abutted with into cartridge, it is described removable into cartridge and the first support ring Unload connection, the first support ring of the first support ring upper edge is axially arranged with into teasehole, it is described into cartridge far from first One end of pushing out ring is equipped with igniter, and the outer wall into the one end of cartridge far from igniter is equipped with the second support ring, described The outer ring of second support ring is abutted with the first air inlet pipe, and first air inlet pipe is detachably connected with the second support ring, and described Two the second support rings of support ring upper edge are axially arranged with the first air admission hole, and first air inlet pipe is close to one end of the second support ring Outer wall be equipped with third support ring, the outer ring of the third support ring abuts with the first water inlet pipe, first water inlet pipe and Third support ring is detachably connected, and the third support ring is equipped with the first inlet opening, and first air inlet pipe is far from third branch The outer wall of one end of pushing out ring is equipped with first and blocks ring, and the first closure ring is detachably connected with the first air inlet pipe, and described the The outer ring of one closure ring is fixedly connected with the first outer tube, is set on the outer wall of the one end of first water inlet pipe far from the first closure ring There are the 4th support ring, the outer ring of the 4th support ring to be abutted with the inner wall of the first outer tube, first outer tube and the 4th support Ring is detachably connected, and the 4th support ring of the 4th support ring upper edge is axially arranged with the first osculum, first water inlet pipe First block ring between be equipped with the first drainage channel, the coal dust burner from inside to outside successively include inner tube, the second air inlet pipe, Into coal pipe, the second water inlet pipe, the second outer tube, the outer diameter of the internal diameter of said inner tube and the first outer tube is adapted, outside described first Pipe is inserted into inner tube, and outer wall of the said inner tube close to one end of the 4th support ring is equipped with the 5th support ring, the 5th support The outer ring of ring is abutted with the inner wall of the second air inlet pipe, and second air inlet pipe is detachably connected with the 5th support ring, and the described 5th The 5th support ring of support ring upper edge is axially arranged with the second air admission hole, and the described one end of second air inlet pipe far from the 5th support ring is set There is a swirl vane, the outer wall of the described one end of second air inlet pipe far from swirl vane is equipped with the 6th support ring, described 6th The outer ring of pushing out ring is abutted with the inner wall into coal pipe, described to be detachably connected into coal pipe and the 6th support ring, described 6th The 6th support ring of pushing out ring upper edge is axially arranged with into coal dust hole, it is described into coal pipe on the outer wall of one end of the 6th support ring Equipped with the 7th support ring, the outer ring of the 7th support ring is abutted with the inner wall of the second water inlet pipe, second water inlet pipe and Seven support rings are detachably connected, and the 7th support ring of the 7th support ring upper edge is axially arranged with the second inlet opening, described into coal The one end of tube cell far from the 7th support ring is equipped with second and blocks ring, and the second closure ring is detachably connected with into coal pipe, institute The outer ring for stating the second closure ring is fixedly connected with the second outer tube, and outer wall of second water inlet pipe far from the second closure ring is equipped with The outer ring of 8th support ring, the 8th support ring is abutted with the inner wall of the second outer tube, second outer tube and the 8th support ring Be detachably connected, the 8th support ring of the 8th support ring upper edge is axially arranged with the second osculum, second water inlet pipe with It is equipped with the second drainage channel between second closure ring.

The prior art is compared, the beneficial effects of the utility model are：

The utility model is combined each building block by removable connection type, can complete coal dust gas Change the work that feeds intake of stove, it integrally uses fabricated structure, can arbitrarily dismount, can be according to the service condition of device in time more Scaling loss component is changed, waste can be reduced, reduces production cost.

Description of the drawings

Attached drawing 1 is the structural schematic diagram of the utility model.

Label shown in attached drawing：1, central tube；2, into cartridge；3, the first air inlet pipe；4, the first water inlet pipe；5, outside first Pipe；6, the first support ring；7, into teasehole；8, igniter；9, the second support ring；10, the first air admission hole；11, third support ring； 12, the first inlet opening；13, first ring is blocked；14, the 4th support ring；15, the first osculum；16, the first drainage channel；17, interior Pipe；18, the second air inlet pipe；19, into coal pipe；20, the second water inlet pipe；21, the second outer tube；22, the 5th support ring；23, second Air admission hole；24, swirl vane；25, the 6th support ring；26, into coal dust hole；27, the 7th support ring；28, the second inlet opening；29、 Second blocks ring；30, the 8th support ring；31, the second osculum；32, the second drainage channel.

Specific implementation mode

With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this Utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, in the content for having read the utility model instruction Later, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms equally fall within this Shen It please limited range.

Described in the utility model is a kind of dry coal powder gasification assembled nozzle, including coal dust burner, igniter burner, the igniting Burner includes successively from inside to outside central tube 1, into cartridge 2, the first air inlet pipe 3, the first water inlet pipe 4, the first outer tube 5, nitrogen It is sprayed outward through central tube 1.The outer wall of one end of the central tube 1 is equipped with the first support ring 6, first support ring 6 Outer ring is abutted with into cartridge 2, described to be detachably connected into cartridge 2 and the first support ring 6, can be from first into cartridge 2 It is removed in support ring 6, fuel channel is constituted into the gap between cartridge 2 and central tube 1.First support ring, 6 upper edge One support ring 6 is axially arranged with into teasehole 7, and fuel, which is passed through, to be entered into teasehole 7 into cartridge 2.It is described separate into cartridge 2 One end of first support ring 6 is equipped with igniter 8, and igniter 8 is for lighting a fire.It is described into the one end of cartridge 2 far from igniter 8 Outer wall is equipped with the second support ring 9, and the outer ring of second support ring 9 is abutted with the first air inlet pipe 3, first air inlet pipe 3 Be detachably connected with the second support ring 9, the first air inlet pipe 3 can be removed from the second support ring 9, the first air inlet pipe 3 with into combustion Gap between expects pipe 2 constitutes oxygen channel.Second support ring, 9 the second support ring of upper edge 9 is axially arranged with the first air inlet Hole 10, oxygen are entered by the first air admission hole 10 in the first air inlet pipe 3.Oxygen in first air inlet pipe 3 with into the combustion in cartridge 2 Material mixes at igniter 8, is lighted by igniter 8.First air inlet pipe 3 is on the outer wall of one end of the second support ring 9 Equipped with third support ring 11, the outer ring of the third support ring 11 is abutted with the first water inlet pipe 4, first water inlet pipe 4 and Three-support ring 11 is detachably connected, and the first water inlet pipe 4 can be removed from third support ring 11.It is set in the third support ring 11 There are the first inlet opening 12, the outer wall of first air inlet pipe, 3 one end far from third support ring 11 to be equipped with first and block ring 13, The first closure ring 13 is detachably connected with the first air inlet pipe 3, and described first blocks the outer ring of ring 13 and the fixation of the first outer tube 5 Connection, first water inlet pipe 4 far from first block ring 13 one end outer wall be equipped with the 4th support ring 14, described 4th The outer ring of pushing out ring 14 is abutted with the inner wall of the first outer tube 5, and first outer tube 5 is detachably connected with the 4th support ring 14, and first Outer tube 5 can be removed from the 4th support ring 14, and the 4th support ring 14 of 14 upper edge of the 4th support ring is axially arranged with first Osculum 15, first water inlet pipe 4 and first, which blocks, is equipped with the first drainage channel 16 between ring 13, the first water inlet pipe 4 and the Gap, the first drainage channel 16, the first water inlet pipe 4 between one air inlet pipe 3 and the gap between the first outer tube 5 constitute cooling logical Road, cooling water are entered by the first inlet opening 12, are discharged, can be cooled to igniter burner by the first osculum 15.The coal Powder burner includes successively from inside to outside inner tube 17, the second air inlet pipe 18, into coal pipe 19, the second water inlet pipe 20, the second outer tube 21, The outer diameter of the internal diameter of said inner tube 17 and the first outer tube 5 is adapted, and first outer tube 5 is inserted into inner tube 17, the first outer tube 5 with It is detachable between inner tube 17.Outer wall of the said inner tube 17 close to one end of the 4th support ring 14 is equipped with the 5th support ring 22, institute The outer ring for stating the 5th support ring 22 is abutted with the inner wall of the second air inlet pipe 18, and second air inlet pipe, 18 and the 5th support ring 22 can Dismantling connection, the second air inlet pipe 18 can remove in the 5th support ring 22, the gap structure between the second air inlet pipe 18 and inner tube 17 At oxygen channel.The 5th support ring 22 of 5th support ring, 22 upper edge is axially arranged with the second air admission hole 23, and oxygen is by second Air admission hole 23 enters the second air inlet pipe 18.Second air inlet pipe, 18 one end far from the 5th support ring 22 is equipped with swirl vane 24, swirl vane 24 accelerates the flow velocity of the oxygen of process.The described one end of second air inlet pipe 18 far from swirl vane 24 Outer wall be equipped with the 6th support ring 25, the outer ring of the 6th support ring 25 abuts with the inner wall into coal pipe 19, it is described into Coal pipe 19 is detachably connected with the 6th support ring 25, can be removed from the 6th support ring 25 into coal pipe 19, into coal pipe 19 and the second gap between air inlet pipe 18 constitute coal dust channel, the axial direction of the 6th support ring 25 of 25 upper edge of the 6th support ring Equipped with into coal dust hole 26, coal dust enters via into coal dust hole 26 into coal pipe 19.It is described into coal pipe 19 close to the 6th support ring The outer wall of 25 one end is equipped with the 7th support ring 27, and the outer ring of the 7th support ring 27 and the inner wall of the second water inlet pipe 20 support It connects, second water inlet pipe 20 is detachably connected with the 7th support ring 27, and the second water inlet pipe 20 can be from the 7th support ring 27 It removes.The 7th support ring 27 of 7th support ring, 27 upper edge is axially arranged with the second inlet opening 28, described remote into coal pipe 19 One end from the 7th support ring 27 is equipped with second and blocks ring 29, and the second closure ring 29 is detachably connected with into coal pipe 19, The outer ring of the second closure ring 29 is fixedly connected with the second outer tube 21, and second water inlet pipe 20 blocks ring 29 far from second Outer wall is equipped with the 8th support ring 30, and the outer ring of the 8th support ring 30 is abutted with the inner wall of the second outer tube 21, and described second Outer tube 21 is detachably connected with the 8th support ring 30, and the second outer tube 21 can be removed from the 8th support ring 30.Described 8th The 8th support ring 30 of 30 upper edge of pushing out ring is axially arranged with the second osculum 31, second water inlet pipe 20 and second block ring 29 it Between be equipped with the second drainage channel 32, between coal pipe 19 and the second water inlet pipe 20 gap, the second drainage channel 32, second into Gap between water pipe 20 and the second outer tube 21 constitutes cooling duct, and cooling water is entered by the second inlet opening 28, by the second draining Hole 31 is discharged, and can cool to coal dust burner, and the utility model is by removable connection type by each building block It combines, the work that feeds intake of pulverized coal gasification furnace can be completed, it integrally uses fabricated structure, can arbitrarily dismount, energy It is enough that scaling loss component is replaced according to the service condition of device in time, waste can be reduced, production cost is reduced.

Embodiment：Described in the utility model is a kind of dry coal powder gasification assembled nozzle, including coal dust burner, igniter burner, The igniter burner includes from inside to outside central tube 1 successively, into outside cartridge 2, the first air inlet pipe 3, the first water inlet pipe 4, first Pipe 5, nitrogen spray outward through central tube 1.The outer wall of one end of the central tube 1 is equipped with the first support ring 6, the first support ring Integral structure is used between 6 and central tube 1, the outer ring of first support ring 6 is abutted with into cartridge 2, described into fuel Pipe 2 is detachably connected by hexagon socket head cap screw and the first support ring 6, into cartridge 2 be equipped with hexagon socket head cap screw be adapted Counter sink, the first support ring 6 are equipped with the threaded hole being adapted with hexagon socket head cap screw, can be from the first support ring 6 into cartridge 2 On remove, between cartridge 2 and central tube 1 gap constitute fuel channel.First support ring, 6 the first support ring of upper edge 6 axial array is set there are six into teasehole 7, and fuel into teasehole 7 through entering into cartridge 2.It is described separate into cartridge 2 One end of first support ring 6 is equipped with igniter 8, and igniter 8 is for lighting a fire.It is described into the one end of cartridge 2 far from igniter 8 Outer wall be equipped with the second support ring 9, the second support ring 9 and between cartridge 2 use integral structure, it is described second support The outer ring of ring 9 is abutted with the first air inlet pipe 3, and first air inlet pipe 3 is detachably connected by hexagon socket head cap screw and the second support ring 9 It connects, first air inlet pipe 3 is equipped with the counter sink being adapted with hexagon socket head cap screw, and the second support ring 9 is equipped with and interior hexagonal The adaptable threaded hole of screw, the first air inlet pipe 3 can be removed from the second support ring 9, the first air inlet pipe 3 with into cartridge 2 Between gap constitute oxygen channel.The axial array of second support ring, 9 the second support ring of upper edge 9 set there are six first into Stomata 10, oxygen are entered by the first air admission hole 10 in the first air inlet pipe 3.Oxygen in first air inlet pipe 3 with into cartridge 2 Fuel mixes at igniter 8, is lighted by igniter 8.Outer wall of first air inlet pipe 3 close to one end of the second support ring 9 It is equipped with third support ring 11, integral structure, the third support ring are used between the first air inlet pipe 3 and third support ring 11 11 outer ring is abutted with the first water inlet pipe 4, and first water inlet pipe 4 is detachably connected by hexagon socket head cap screw and third support ring 11 Connect, first water inlet pipe 4 be equipped with hexagon socket head cap screw be adapted counter sink, the third support ring 11 be equipped with it is interior The adaptable threaded hole of hex(agonal)screw, the first water inlet pipe 4 can be removed from third support ring 11.In the third support ring 11 It is set there are six the first inlet opening 12 along the radial arrays of the first support ring 11, first air inlet pipe 3 is far from third support ring 11 One end outer wall be equipped with first block ring 13, it is described first block ring 13 can by hexagon socket head cap screw and the first air inlet pipe 3 Dismantling connection, the first air inlet pipe 3 are equipped with the threaded hole being adapted with hexagon socket head cap screw, and first, which blocks ring 13, is equipped with and interior six The adaptable counter sink of angle screw, described first blocks between ring 13 and the first outer tube 5 using integral structure.Described first into Water pipe 4 far from first block ring 13 one end outer wall be equipped with the 4th support ring 14, the outer ring of the 4th support ring 14 with The inner wall of first outer tube 5 abuts, and uses integral structure, first outer tube 5 logical between the 4th support ring 14 and the first outer tube 5 It crosses hexagon socket head cap screw to be detachably connected with the 4th support ring 14, the first outer tube 5 is equipped with the countersunk head being adapted with hexagon socket head cap screw Hole, the 4th support ring 14 are equipped with the threaded hole being adapted with hexagon socket head cap screw, and the first outer tube 5 can be from the 4th support ring 14 It removing, the axial array of the 4th support ring 14 of 14 upper edge of the 4th support ring is set there are six the first osculum 15, and described first Water inlet pipe 4 and first block ring 13 between be equipped with the first drainage channel 16, between the first water inlet pipe 4 and the first air inlet pipe 3 between Gap between gap, the first drainage channel 16, the first water inlet pipe 4 and the first outer tube 5 constitutes cooling duct, cooling water by first into Water hole 12 enters, and is discharged, can be cooled to igniter burner by the first osculum 15.The coal dust burner is from inside to outside successively Including inner tube 17, the second air inlet pipe 18, into coal pipe 19, the second water inlet pipe 20, the second outer tube 21, the internal diameter of said inner tube 17 omits More than the outer diameter of the first outer tube 5, first outer tube 5 is inserted into inner tube 17, detachable between the first outer tube 5 and inner tube 17.Institute State outer wall of the inner tube 17 close to one end of the 4th support ring 14 and be equipped with the 5th support ring 22, inner tube 17 and the 5th support ring 22 it Between use integral structure, the outer ring of the 5th support ring 22 abuts with the inner wall of the second air inlet pipe 18, the second air inlet pipe 18 Be detachably connected by hexagon socket head cap screw and the 5th support ring 22, the second air inlet pipe 18 be equipped with hexagon socket head cap screw be adapted Counter sink, the 5th support ring 22 are equipped with the threaded hole being adapted with hexagon socket head cap screw, and the second air inlet pipe 18 being capable of the 5th support It is removed on ring 22, the gap between the second air inlet pipe 18 and inner tube 17 constitutes oxygen channel.5th support ring, 22 upper edge The axial array of five support rings 22 is set there are six the second air admission hole 23, and oxygen enters the second air inlet pipe 18 by the second air admission hole 23. Second air inlet pipe, 18 one end far from the 5th support ring 22 is equipped with swirl vane 24, oxygen of the swirl vane 24 to process Flow velocity accelerated.The outer wall of the described one end of second air inlet pipe 18 far from swirl vane 24 is equipped with the 6th support ring 25, Use integral structure between 6th support ring 25 and the second air inlet pipe 18, the outer ring of the 6th support ring 25 with into coal pipe 19 inner wall abuts, described to be detachably connected into coal pipe 19 by hexagon socket head cap screw and the 6th support ring 25, into coal pipe 19 It is equipped with the counter sink being adapted with hexagon socket head cap screw, the 6th support ring 25 is equipped with the screw thread being adapted with hexagon socket head cap screw Hole can be removed into coal pipe 19 from the 6th support ring 25, be constituted into the gap between coal pipe 19 and the second air inlet pipe 18 Coal dust channel, the 6th support ring 25 of 25 upper edge of the 6th support ring are axially arranged with into coal dust hole 26, and coal dust is via into coal dust Hole 26 enters into coal pipe 19.The outer wall into coal pipe 19 close to one end of the 6th support ring 25 is equipped with the 7th support ring 27, the 7th support ring 27 and between coal pipe 19 use integral structure, the outer ring of the 7th support ring 27 with second into The inner wall of water pipe 20 abuts, and second water inlet pipe 20 is detachably connected by hexagon socket head cap screw and the 7th support ring 27, and second Water inlet pipe 20 is equipped with the counter sink being adapted with hexagon socket head cap screw, and the 7th support ring 27 is equipped with to be adapted with hexagon socket head cap screw Threaded hole, the second water inlet pipe 20 can remove from the 7th support ring 27.The 7th support ring of 7th support ring, 27 upper edge 27 are axially arranged with the second inlet opening 28, described into the one end of coal pipe 19 far from the 7th support ring 27 to be equipped with second and block ring 29, it is described second closure ring 29 is detachably connected with into coal pipe 19 by hexagon socket head cap screw, into the outer wall of coal pipe 19 on set There is the threaded hole being adapted with hexagon socket head cap screw, second, which blocks ring 29, is equipped with the counter sink being adapted with hexagon socket head cap screw, institute It states and uses integral structure between the second closure ring 29 and the second outer tube 21.Second water inlet pipe 20 blocks ring 29 far from second Outer wall be equipped with the 8th support ring 30, use integral structure between the 8th support ring 30 and the second water inlet pipe 20, described the The outer ring of eight support rings 30 is abutted with the inner wall of the second outer tube 21, and second outer tube 21 is supported by hexagon socket head cap screw and the 8th Ring 30 is detachably connected, and the second outer tube 21 is equipped with the counter sink being adapted with hexagon socket head cap screw, and the 8th support ring 30 is equipped with The threaded hole being adapted with hexagon socket head cap screw, the second outer tube 21 can be removed from the 8th support ring 30.8th support ring The axial array of the 8th support ring 30 of 30 upper edge is set there are six the second osculum 31, and second water inlet pipe 20 and second blocks ring The second drainage channel 32 is equipped between 29, between coal pipe 19 and the second water inlet pipe 20 gap, the second drainage channel 32, the Gap between two water inlet pipes 20 and the second outer tube 21 constitutes cooling duct, and cooling water is entered by the second inlet opening 28, by second Osculum 31 is discharged, and can cool to coal dust burner, and the utility model is by removable connection type by each composition Component combination together, can complete the work that feeds intake of pulverized coal gasification furnace, it integrally uses fabricated structure, can arbitrarily tear open Dress, can replace scaling loss component in time according to the service condition of device, can reduce waste, reduce production cost.

Claims (1)

1. a kind of dry coal powder gasification assembled nozzle, including coal dust burner, igniter burner, it is characterized in that：The igniter burner is by interior Include successively outward central tube (1), into cartridge (2), the first air inlet pipe (3), the first water inlet pipe (4), the first outer tube (5), institute The outer wall for stating one end of central tube (1) is equipped with the first support ring (6), the outer ring of first support ring (6) with into cartridge (2) it abuts, described to be detachably connected into cartridge (2) and the first support ring (6), the first support ring (6) upper edge first Being axially arranged with into teasehole (7) for pushing out ring (6), it is described to be equipped with igniter into the one end of cartridge (2) far from the first support ring (6) (8), the outer wall into the one end of cartridge (2) far from igniter (8) is equipped with the second support ring (9), second support The outer ring of ring (9) is abutted with the first air inlet pipe (3), and first air inlet pipe (3) is detachably connected with the second support ring (9), institute That states the second support ring (9) the second support ring of upper edge (9) is axially arranged with the first air admission hole (10), and first air inlet pipe (3) is leaned on The outer wall of one end of nearly second support ring (9) is equipped with third support ring (11), the outer ring of the third support ring (11) and the One water inlet pipe (4) abuts, and first water inlet pipe (4) is detachably connected with third support ring (11), the third support ring (11) the first inlet opening (12) are equipped with, are set on the outer wall of the one end of first air inlet pipe (3) far from third support ring (11) There are the first closure ring (13), the first closure ring (13) to be detachably connected with the first air inlet pipe (3), described first blocks ring (13) outer ring is fixedly connected with the first outer tube (5), outside one end that first water inlet pipe (4) blocks ring (13) far from first Wall is equipped with the 4th support ring (14), and the outer ring of the 4th support ring (14) abuts with the inner wall of the first outer tube (5), and described the One outer tube (5) is detachably connected with the 4th support ring (14), the axis of the 4th support ring (14) of the 4th support ring (14) upper edge To equipped with the first osculum (15), the first drainage channel is equipped between first water inlet pipe (4) and the first closure ring (13) (16), the coal dust burner from inside to outside successively include inner tube (17), the second air inlet pipe (18), into coal pipe (19), second into Water pipe (20), the second outer tube (21), the internal diameter of said inner tube (17) and the outer diameter of the first outer tube (5) are adapted, outside described first It manages (5) to be inserted into inner tube (17), outer wall of the said inner tube (17) close to one end of the 4th support ring (14) is equipped with the 5th support The outer ring of ring (22), the 5th support ring (22) is abutted with the inner wall of the second air inlet pipe (18), second air inlet pipe (18) It is detachably connected with the 5th support ring (22), the 5th support ring (22) of the 5th support ring (22) upper edge is axially arranged with second Air admission hole (23), the one end of second air inlet pipe (18) far from the 5th support ring (22) are equipped with swirl vane (24), and described the The outer wall of the one end of two air inlet pipe (18) far from swirl vane (24) is equipped with the 6th support ring (25), the 6th support ring (25) outer ring is abutted with the inner wall into coal pipe (19), described detachably to connect into coal pipe (19) and the 6th support ring (25) It connects, the 6th support ring (25) of the 6th support ring (25) upper edge is axially arranged with into coal dust hole (26), described into coal pipe (19) be equipped with the 7th support ring (27) close to the outer wall of one end of the 6th support ring (25), the 7th support ring (27) it is outer Circle is abutted with the inner wall of the second water inlet pipe (20), and second water inlet pipe (20) is detachably connected with the 7th support ring (27), institute That states the 7th support ring (27) of the 7th support ring (27) upper edge is axially arranged with the second inlet opening (28), described remote into coal pipe (19) One end from the 7th support ring (27) is equipped with second and blocks ring (29), described second block ring (29) with it is removable into coal pipe (19) Connection is unloaded, the outer ring of the second closure ring (29) is fixedly connected with the second outer tube (21), and second water inlet pipe (20) is separate Second outer wall for blocking ring (29) is equipped with the 8th support ring (30), outer ring and the second outer tube of the 8th support ring (30) (21) inner wall abuts, and second outer tube (21) is detachably connected with the 8th support ring (30), the 8th support ring (30) The 8th support ring (30) of upper edge is axially arranged with the second osculum (31), and second water inlet pipe (20) blocks ring (29) with second Between be equipped with the second drainage channel (32).