CN115031230B - Omnibearing kiln tail coal sprayer of combustor, use method and combustor - Google Patents
Omnibearing kiln tail coal sprayer of combustor, use method and combustor Download PDFInfo
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- CN115031230B CN115031230B CN202210651195.0A CN202210651195A CN115031230B CN 115031230 B CN115031230 B CN 115031230B CN 202210651195 A CN202210651195 A CN 202210651195A CN 115031230 B CN115031230 B CN 115031230B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention relates to the technical field of coal injection devices, in particular to an omnibearing kiln tail coal injection device of a burner, a using method and the burner. The invention is convenient for the pulverized coal to be uniformly sprayed out of the spray cylinder and is convenient for the subsequent pulverized coal to be fully reacted.
Description
Technical Field
The invention relates to the technical field of coal injectors, in particular to an omnibearing kiln tail coal injector of a combustor, a using method and the combustor.
Background
The waste heat of the kiln tail in the existing cement firing process can be supplied with the pulverized coal again, and the pulverized coal is generally fully reacted with high-temperature flue gas generated in the kiln tail through a coal injection pipe so that cement raw materials are fully contacted with the high-temperature gas to quickly absorb the heat of the flue gas for predecomposition, thereby improving the yield and the quality of cement clinker.
The utility model discloses a kiln tail coal injection pipe with cyclone burner, like the patent of application number CNCN202121495753.6, including the kiln body, the right-hand member middle part fixedly connected with connecting device of the kiln body, the right-hand member middle part of connecting device alternates swing joint and has coal injection pipe body, the surface right part of coal injection pipe body alternates fixedly connected with first solid fixed ring, the right-hand member fixedly connected with coal injection device of first solid fixed ring, the utility model discloses be favorable to the burning of kiln tail buggy, improved the kiln and calcined efficiency; however, the applicant found that the coal injection is not uniform because only one nozzle is provided.
Disclosure of Invention
In view of the above, the present invention provides an all-directional kiln tail coal injection device of a burner, a use method thereof and a burner, so as to solve the problem of non-uniform coal injection.
Based on the aim, the invention provides an all-dimensional kiln tail coal sprayer of a combustor, which comprises a coal inlet pipe and a coal spraying pipe communicated with the coal inlet pipe, wherein a constant temperature plate is arranged in the coal spraying pipe, a spraying barrel is arranged at the end part of the coal spraying pipe, the lower end surface of the spraying barrel is hermetically arranged, at least two groups of spraying pieces are arranged on the side wall of the spraying barrel, each group of spraying pieces comprises spraying nozzles which are arranged on the spraying barrel at equal angles, the spraying nozzles of the two groups of spraying pieces which are adjacently arranged up and down are staggered, an upper angle piece and a lower angle piece are connected onto the coal spraying pipe, and the upper angle piece and the lower angle piece are used for controlling the coal spraying pipe to swing up and down.
Optionally, an axis of rotation is provided on the coal injection pipe, an adjusting chamber is provided between the coal injection pipe and the injection cylinder, an inlet port communicated with the coal injection pipe is provided at the upper left end of the adjusting chamber, an outlet port communicated with the injection cylinder is provided at the lower end before the adjusting chamber, a driving rotating shaft connected with the axis of rotation in a transmission manner is provided at the upper end of the adjusting chamber, a driving rotating cylinder coaxially connected with the driving rotating shaft is provided in the adjusting chamber, a fixed cylinder is provided in the driving rotating cylinder, the lower end of the fixed cylinder is fixedly connected with the inner bottom of the adjusting chamber through a fixed shaft, an annular sliding groove is provided on the side wall of the fixed cylinder, a sliding block is slidably connected in the annular sliding groove, the annular sliding groove comprises two upper arc sliding grooves symmetrically arranged about the axis of the fixed cylinder, lower arc sliding grooves are provided at oblique bottoms of two sides of the upper arc sliding grooves, adjacent upper arc sliding grooves and lower arc sliding grooves are communicated through connecting arc sliding grooves, a driving rotating shaft is provided at equal angle with the driving rotating cylinder, one end of the driving rotating shaft is connected with the sliding block through a driving connecting frame, and a material receiving plate located outside the driving rotating cylinder is provided at the other end of the driving rotating shaft.
The coal powder is input into the coal injection pipe through the coal inlet pipe, then the coal powder enters the adjusting chamber, the rotating shaft is rotated to drive the driving rotating shaft and the driving rotating drum to rotate, due to the arrangement of the annular sliding groove and the sliding block, when the driving rotating drum rotates, the receiving plate is driven to overturn around the driving rotating shaft, the coal powder enters the receiving plate in the adjusting chamber, the driving rotating drum rotates to drive the receiving plate to be converted from a horizontal state to a vertical state, so that the coal powder on the receiving plate can be poured into the injection cylinder and then is ejected through the injection cylinder.
Optionally, an upper cleaning roller is arranged on the right side in the adjusting chamber, a lower cleaning roller is arranged below the upper cleaning roller, the driving rotating shaft is located between the upper cleaning roller and the lower cleaning roller, and cleaning brushes are arranged on the outer side walls of the upper cleaning roller and the lower cleaning roller.
Optionally, a protective cover is arranged on the upper portion of the adjusting chamber, a first transmission shaft in transmission connection with the driving rotating shaft is arranged in the protective cover, the first transmission shaft is located on the rear side of the adjusting chamber, a first helical gear is arranged at the lower end of the first transmission shaft, a second helical gear is in meshing transmission connection with the first helical gear, and the second helical gear is in coaxial connection with the upper cleaning roller.
Optionally, a plurality of first vibrating springs are arranged on the first transmission shaft at equal angles, and a first vibrating ball arranged in contact with the outer side wall of the regulating chamber is arranged at the end of each first vibrating spring.
Optionally, a support is arranged in the coal injection pipe, the rotating shaft is arranged in the support, a third bevel gear is arranged at the end of the rotating shaft, the third bevel gear is in meshing transmission connection with a fourth bevel gear, the fourth bevel gear is connected with a constant-temperature rotating shaft coaxially arranged with the coal injection pipe, the constant-temperature plate is arranged on the side wall of the constant-temperature rotating shaft and is in a spiral shape, and a containing cavity containing the third bevel gear and the fourth bevel gear is arranged in the support.
Optionally, the upper and lower angle pieces comprise a counterweight sleeve connected with the other end of the coal injection pipe, the counterweight sleeve is provided with a counterweight block, the counterweight sleeve is connected with the counterweight block in a sliding manner, a clamping piece is arranged on the counterweight sleeve, and a clamping groove matched with the clamping piece is formed in the counterweight block.
Optionally, the coal injection pipe outside is provided with the casing, is provided with the upper and lower moving member of being connected with the coal injection pipe in the casing, and upper and lower moving member is connected with the left and right sides moving member that is located the casing upper portion, has seted up out the mouth of pipe on the casing, and the coal injection pipe sets up the one end of spouting the section of thick bamboo and can shift out the casing through the mouth of pipe, and left and right sides moving member is used for controlling the coal injection pipe and moves about, and upper and lower moving member is used for controlling the coal injection pipe and reciprocates.
Based on the above embodiment, a method for using an omnibearing kiln tail coal sprayer of a combustor is provided, which comprises the following steps: the coal powder is input into the coal injection pipe through the coal inlet pipe, the coal powder in the coal injection pipe enters the adjusting chamber through the thermostatic plate, the control rotating shaft rotates to drive the driving rotating shaft and the driving rotating drum to rotate, due to the arrangement of the annular sliding groove and the sliding block, when the driving rotating drum rotates, the driving receiving plate is driven to overturn around the driving rotating shaft, the coal powder enters the receiving plate in the adjusting chamber, the driving rotating drum rotates to drive the receiving plate to be converted into a vertical state from a horizontal state, the coal powder on the receiving plate is poured into the spraying barrel, and then the coal powder is sprayed out through the spraying barrel.
Based on above-mentioned embodiment, provide a combustor, including the kiln, be provided with the kiln mouth on the kiln, the kiln intercommunication has the waste heat tuber pipe, and kiln one side sets up the casing, and the coal-injection pipe in the casing loops through out mouth of pipe and kiln mouth and enters into the kiln.
The invention has the beneficial effects that: according to the omnibearing kiln tail coal sprayer of the combustor, the using method and the combustor, coal powder is input into the coal spraying pipe through the coal inlet pipe, the coal powder in the coal spraying pipe passes through the thermostatic plate and then is sprayed out through the spraying barrel, the thermostatic plate increases the area of the coal inlet pipe, the temperature of the coal inlet pipe is further reduced, a plurality of nozzles arranged on the spraying barrel are used for uniformly spraying the coal powder, in addition, the coal spraying pipe can be adjusted to swing up and down through the upper angle piece and the lower angle piece, the coal powder is further uniformly sprayed out, and the follow-up coal powder can be fully reacted conveniently.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a spray nozzle according to an embodiment of the present invention;
FIG. 3 is a schematic view showing the internal structure of a conditioning chamber according to an embodiment of the present invention;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;
FIG. 5 is a schematic view of the interior of the conditioning chamber according to the embodiment of the present invention;
FIG. 6 is a schematic structural view of a stent according to an embodiment of the present invention;
FIG. 7 is a schematic view of the internal structure of a coal injection pipe according to an embodiment of the present invention;
fig. 8 is a schematic cross-sectional view of a coal injection pipe according to an embodiment of the present invention.
In the figure: 1. a coal injection pipe; 2. a refractory layer; 3. a thermostatic plate; 4. spraying a cylinder; 5. a spout; 6. a nozzle; 7. a conditioning chamber; 8. a protective cover; 10. driving the rotating shaft; 11. driving the drum; 12. a fixed cylinder; 13. an upper arc-shaped chute; 14. a lower arc-shaped chute; 15. connecting the arc chute; 16. a drive link; 17. driving the rotating shaft; 18. a material receiving plate; 19. a slider; 20. an upper cleaning roller; 21. a first helical gear; 22. a second helical gear; 23. a first drive shaft; 24. a first vibrating spring; 25. a first vibrating ball; 26. a rotating shaft; 27. a constant temperature rotating shaft; 28. a third helical gear; 29. a fourth helical gear; 30. a support; 31. a coal inlet pipe; 32. a left and right moving member; 33. an upper and lower moving member; 34. an upper and lower angle member; 35. a housing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
It should be noted that technical terms or scientific terms used in the embodiments of the present invention should have a general meaning as understood by those having ordinary skill in the art to which the present invention belongs, unless otherwise defined. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
As shown in fig. 1 and 2, an all-round kiln tail coal sprayer of combustor, including advancing coal injection pipe 1 of coal injection pipe 31 rather than the intercommunication, be provided with thermostatic plate 3 in the coal injection pipe 1, coal injection pipe 1 tip is provided with spouts a section of thick bamboo 4, the sealed setting of terminal surface under the section of thick bamboo 4 of spouting, 4 lateral walls of spouting a section of thick bamboo are provided with at least two sets of spouting pieces, and every group spouts the piece and includes that the equal angle sets up spout 5 of 4 lateral walls of spouting a section of thick bamboo, two sets of adjacent setting from top to bottom spout 5 of spouting the piece staggers and sets up, be connected with angle piece 34 from top to bottom on the coal injection pipe 1, angle piece 34 is used for control from top to bottom coal injection pipe 1 luffing motion.
Input the buggy in coal injection pipe 1 through advancing coal pipe 31, coal powder comes through 4 blowout of a spout section of thick bamboo behind thermostated plate 3 in coal injection pipe 1, thermostated plate 3 has increased the area of advancing coal pipe 31, and then reduce the temperature of advancing coal pipe 31, a plurality of spouts 5 of seting up on the spout section of thick bamboo 4 are used for the comparatively even blowout of buggy, 1 luffing motion of coal injection pipe can be adjusted to angle piece 34 about in addition, further make the even blowout of buggy, be convenient for follow-up buggy can abundant reaction.
Optionally, as shown in fig. 8, the thermostatic plate 3 may be fixedly or detachably disposed in the coal injection pipe 1, and at least one thermostatic plate 3 is vertically disposed in the coal injection pipe 1.
As shown in fig. 3, 4, 5 and 7, a rotating shaft 26 is disposed on the coal injection pipe, an adjusting chamber 7 is disposed between the coal injection pipe 1 and the injection cylinder 4, an inlet communicated with the coal injection pipe 1 is disposed at an upper left end of the adjusting chamber 7, a discharge port communicated with the injection cylinder 4 is disposed at a lower front end of the adjusting chamber 7, a driving rotating shaft 10 in transmission connection with the rotating shaft 26 is disposed at an upper end of the adjusting chamber 7, a driving rotating cylinder 11 coaxially connected with the driving rotating shaft 10 is disposed in the adjusting chamber 7, a fixed cylinder 12 is disposed in the driving rotating cylinder 11, a lower end of the fixed cylinder 12 is fixedly connected with an inner bottom of the adjusting chamber 7 through a fixed shaft, an annular sliding groove is disposed on a side wall of the fixed cylinder 12, sliding blocks 19 are slidably connected in the annular sliding groove, the annular sliding groove includes two upper arc sliding grooves 13 symmetrically disposed about an axis of the fixed cylinder 12, lower arc sliding grooves 14 are disposed at two sides of the upper arc sliding grooves 13, a lower arc sliding groove 14 is disposed adjacent to the upper sliding groove 13 and is communicated with the lower arc 15 through a connecting arc 15, an equal angle is disposed to the driving sliding groove 17, one end of the rotating shaft 17 is connected with a driving rotating plate 17, and another end of the driving sliding block 16 is disposed outside the rotating shaft 17, and the driving sliding plate is connected to the rotating cylinder 11.
The pulverized coal is input into the coal injection pipe 1 through the coal inlet pipe 31, then the pulverized coal enters the adjusting chamber 7, the rotating shaft 26 is rotated to drive the driving rotating shaft 10 and the driving rotating drum 11 to rotate, due to the arrangement of the annular sliding groove and the sliding block 19, when the driving rotating drum 11 rotates, the receiving plate 18 is driven to overturn around the driving rotating shaft 17, when the pulverized coal enters the receiving plate 18 in the adjusting chamber 7, the driving rotating drum 11 rotates to drive the receiving plate 18 to be changed from a horizontal state to a vertical state, so that the pulverized coal on the receiving plate 18 can be poured into the injection cylinder 4 and then is sprayed out through the injection cylinder 4.
The rotating shaft 26 is connected with a driving piece, the driving piece comprises an impeller positioned in the coal inlet pipe 31, the impeller is coaxially connected with a driving shaft perpendicular to the axis of the coal inlet pipe 31, and the driving shaft is in transmission connection with the rotating shaft 26.
Optionally, the driving member is replaceable, the driving member is a driving motor, and an output end of the driving motor is fixedly connected or in transmission connection with the rotating shaft 26.
The upper end of the material receiving plate 18 is provided with a material receiving groove which is convenient for receiving the pulverized coal output by the coal injection pipe 1.
In order to facilitate cleaning of the material receiving plate 18, an upper cleaning roller 20 is arranged on the right side in the adjusting chamber 7, a lower cleaning roller is arranged below the upper cleaning roller 20, the driving rotating shaft 17 is located between the upper cleaning roller 20 and the lower cleaning roller, cleaning brushes are arranged on the outer side walls of the upper cleaning roller 20 and the lower cleaning roller, the material receiving plate 18 moves to a position between the lower cleaning roller and the upper cleaning roller 20, the lower cleaning roller and the upper cleaning roller 20 facilitate cleaning of the material receiving plate 18, and adhesion of coal dust on the material receiving plate 18 is reduced.
As shown in fig. 7, a protective cover 8 is arranged on the upper portion of the adjusting chamber 7, a first transmission shaft 23 in transmission connection with the driving rotation shaft 10 is arranged in the protective cover 8, the first transmission shaft 23 is located on the rear side of the adjusting chamber 7, a first helical gear 21 is arranged at the lower end of the first transmission shaft 23, a second helical gear 22 is in meshing transmission connection with the first helical gear 21, the second helical gear 22 is in coaxial connection with the upper cleaning roller 20, the driving rotation shaft 10 rotates to drive the first transmission shaft 23 to rotate, and the lower cleaning roller and the upper cleaning roller 20 are driven to rotate through the meshing transmission arrangement of the first helical gear 21 and the second helical gear 22, so that the cleaning efficiency and the cleaning degree of the material receiving plate 18 are improved.
In order to reduce the adhesion of buggy on the regulating chamber 7 lateral wall, the equidistance is provided with a plurality of first vibrations spring 24 on the first transmission shaft 23, the tip of first vibrations spring 24 be provided with the first vibrations ball 25 that the contact of regulating chamber 7 lateral wall set up rotates at first transmission shaft 23, drives first vibrations ball 25 and rotates and shake the processing to regulating chamber 7, and the buggy of being convenient for can drop from regulating chamber 7 lateral wall, reduces the adhesion of buggy on the regulating chamber 7 lateral wall.
As shown in fig. 6, a support 30 is arranged in the coal injection pipe 1, the rotating shaft 26 is arranged in the support 30, a third helical gear 28 is arranged at an end of the rotating shaft 26, a fourth helical gear 29 is connected to the third helical gear 28 in a meshing transmission manner, the fourth helical gear 29 is connected with a constant temperature rotating shaft 27 coaxially arranged with the coal injection pipe 1, the constant temperature plate 3 is arranged on a side wall of the constant temperature rotating shaft 27, the constant temperature plate 3 is in a spiral shape, and an accommodating cavity for accommodating the third helical gear 28 and the fourth helical gear 29 is arranged in the support 30.
In order to facilitate the up-and-down swinging angle adjustment of the coal injection pipe 1, the up-and-down angle part 34 comprises a counterweight sleeve connected with the other end of the coal injection pipe 1, the counterweight sleeve is provided with a counterweight block, the counterweight sleeve is connected with the counterweight block in a sliding manner, a clamping piece is arranged on the counterweight sleeve, a clamping groove is formed in the counterweight block in a matching manner with the clamping piece, when the up-and-down swinging angle adjustment of the coal injection pipe 1 is needed, the counterweight block moves on the counterweight sleeve, and the up-and-down swinging angle adjustment of the coal injection pipe 1 is facilitated.
The coal injection device is characterized in that a shell 35 is arranged on the outer side of the coal injection pipe 1, an upper moving member 33 and a lower moving member 33 connected with the coal injection pipe 1 are arranged in the shell 35, the upper moving member 33 and the lower moving member 33 are connected with a left moving member 32 and a right moving member 32 which are located on the upper portion in the shell 35, a pipe outlet is formed in the shell 35, the coal injection pipe 1 is arranged at one end of the injection cylinder 4 and can move out of the shell 35 through the pipe outlet, the left moving member 32 and the right moving member 32 are used for controlling the coal injection pipe 1 to move left and right, and the upper moving member 33 and the lower moving member 33 are used for controlling the coal injection pipe 1 to move up and down.
The left and right moving members 32 comprise walking hoists, the upper and lower moving members 33 comprise hand hoists, and the hand hoists are connected with the coal injection pipe 1 through lifting lugs.
Optionally, the upper and lower angle pieces 34 can be replaced, the upper and lower angle pieces 34 include an adjusting motor, an output end of the adjusting motor is provided with an adjusting rotating shaft arranged in parallel with a horizontal line, the coal injection pipe 1 is fixedly connected to a side wall of the adjusting rotating shaft, the adjusting motor is started to drive the adjusting rotating shaft to rotate, and the coal injection pipe 1 and the injection cylinder 4 thereon can be adjusted in an up-and-down swinging manner.
The left and right moving parts 32 can be replaced, the left and right moving parts 32 comprise left and right connecting frames and left and right moving motors connected with the left and right connecting frames, left and right screw rods are arranged at the output ends of the left and right moving motors, left and right ball bearings which are connected with the left and right connecting frames in a sliding connection mode are connected to the left and right screw rods, the left and right ball bearings are connected with the upper and lower moving parts 33, the left and right moving motors are started to drive the left and right screw rods to rotate, the left and right ball bearings and the coal injection pipe 1 connected with the left and right ball bearings can move left and right, and the left and right movement of the coal injection cylinder 4 is facilitated.
The upper moving member 33 and the lower moving member 33 can be replaced, the upper moving member 33 and the lower moving member 33 comprise an upper connecting frame and a lower connecting frame and an up-down moving motor connected with the upper connecting frame and the lower connecting frame, an up-down moving lead screw is arranged at the output end of the up-down moving motor, an up-down moving ball is connected to the up-down moving lead screw in a sliding mode, the up-down moving ball is connected with the coal injection pipe 1, the up-down moving motor is started to drive the up-down moving lead screw to rotate, the up-down moving ball and the coal injection pipe 1 can move up and down, and the up-down moving cylinder 4 can move up and down conveniently.
Wherein coal injection pipe 1 outside is provided with flame retardant coating 2, spout 5 intercommunication has spray tube 6, and every group spouts the piece including 14 spouts 5 for set up 28 spouts 5 altogether on the spray tube, be convenient for comparatively comprehensive coal injection, be provided with the emergency valve on the coal injection pipe 1, adjust the emergent cooling of coal injection pipe 1 through the emergency valve, improve installation regulation nature, leakproofness and the security of coal injection pipe 1.
A use method of an omnibearing kiln tail coal sprayer of a combustor comprises the following steps: the pulverized coal is input into the coal injection pipe 1 through the coal inlet pipe 31, the pulverized coal in the coal injection pipe 1 enters the adjusting chamber 7 through the thermostatic plate 3, the rotating shaft 26 is controlled to rotate, the driving rotating shaft 10 and the driving rotating drum 11 are driven to rotate, due to the arrangement of the annular sliding groove and the sliding block 19, when the driving rotating drum 11 rotates, the receiving plate 18 is driven to overturn around the driving rotating shaft 17, the pulverized coal enters the receiving plate 18 in the adjusting chamber 7, the driving rotating drum 11 rotates to drive the receiving plate 18 to be changed from a horizontal state to a vertical state, the pulverized coal on the receiving plate 18 is poured into the injection cylinder 4, and then the pulverized coal is sprayed out through the injection cylinder 4.
The burner comprises a kiln, wherein a kiln opening is formed in the kiln, the kiln is communicated with a waste heat air pipe, one side of the kiln is provided with a shell 35, and a coal injection pipe 1 in the shell 35 sequentially passes through the pipe outlet and the kiln opening to enter the kiln.
The coal injection pipe 1 is provided with a positioning sleeve, the positioning sleeve is sleeved on the coal injection pipe 1 through a sealing sleeve, the positioning sleeve is in a square horn shape, the positioning sleeve is more labor-saving when the coal injection pipe 1 enters and exits the combustor, and the sealing sleeve enables the joint of the positioning sleeve and the coal injection pipe 1 to be sealed and not easy to shift.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to imply that the scope of the invention is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. An all-dimensional kiln tail coal sprayer of a combustor comprises a coal inlet pipe (31) and a coal spraying pipe (1) communicated with the coal inlet pipe, and is characterized in that a constant temperature plate (3) is arranged in the coal spraying pipe (1), a spraying barrel (4) is arranged at the end part of the coal spraying pipe (1), the lower end face of the spraying barrel (4) is hermetically arranged, at least two groups of spraying pieces are arranged on the side wall of the spraying barrel (4), each group of spraying pieces comprises nozzles (5) which are arranged on the side wall of the spraying barrel (4) at equal angles, the nozzles (5) of the two groups of spraying pieces which are adjacently arranged up and down are staggered, an upper angle piece and a lower angle piece (34) are connected to the coal spraying pipe (1), and the upper angle piece and the lower angle piece (34) are used for controlling the coal spraying pipe (1) to swing up and down;
a rotating shaft (26) is arranged on the coal injection pipe (1), an adjusting chamber (7) is arranged between the coal injection pipe (1) and the coal injection cylinder (4), an inlet communicated with the coal injection pipe (1) is arranged at the upper left end of the adjusting chamber (7), a discharge port communicated with the coal injection cylinder (4) is arranged at the lower front end of the adjusting chamber (7), a driving rotating shaft (10) in transmission connection with the rotating shaft (26) is arranged at the upper end of the adjusting chamber (7), a driving rotating cylinder (11) coaxially connected with the driving rotating shaft (10) is arranged in the adjusting chamber (7), a fixed cylinder (12) is arranged in the driving rotating cylinder (11), the lower end of the fixed cylinder (12) is fixedly connected with the inner bottom of the adjusting chamber (7) through a fixed shaft, an annular sliding chute is arranged on the side wall of the fixed cylinder (12), a sliding block (19) is slidably connected in the annular sliding chute, the annular sliding chute comprises two upper arc-shaped sliding chutes (13) symmetrically arranged about the axis of the fixed cylinder (12), lower arc-shaped sliding chutes (14) are arranged at the oblique lower sides of the upper arc-shaped sliding chute (13), the upper arc-shaped sliding chute (14) is connected with the lower sliding chute (15) through an equal angle, and the rotating chute (17) is arranged between the adjacent sliding chute (14), one end of the driving rotating shaft (17) is connected with the sliding block (19) through a driving connecting frame (16), and the other end of the driving rotating shaft (17) is provided with a material receiving plate (18) located on the outer side of the driving rotating drum (11).
2. The all-directional kiln tail coal sprayer of the burner as claimed in claim 1, characterized in that an upper cleaning roller (20) is arranged at the right side in the adjusting chamber (7), a lower cleaning roller is arranged below the upper cleaning roller (20), the driving rotating shaft (17) is positioned between the upper cleaning roller (20) and the lower cleaning roller, and cleaning brushes are arranged on the outer side walls of the upper cleaning roller (20) and the lower cleaning roller.
3. The omnibearing kiln tail coal sprayer of a burner as claimed in claim 2, wherein a protective cover (8) is arranged at the upper part of the adjusting chamber (7), a first transmission shaft (23) in transmission connection with the driving rotating shaft (10) is arranged in the protective cover (8), the first transmission shaft (23) is positioned at the rear side of the adjusting chamber (7), a first bevel gear (21) is arranged at the lower end of the first transmission shaft (23), a second bevel gear (22) is in meshing transmission connection with the first bevel gear (21), and the second bevel gear (22) is in coaxial connection with the upper cleaning roller (20).
4. The burner all-directional kiln tail coal injector according to claim 3, characterized in that a plurality of first vibrating springs are arranged on the first transmission shaft (23) at equal angles, and the end parts of the first vibrating springs are provided with first vibrating balls (25) which are arranged in contact with the outer side wall of the adjusting chamber (7).
5. The omnibearing kiln tail coal sprayer of a burner as claimed in claim 3, wherein a support (30) is arranged in the coal spraying pipe (1), the rotating shaft (26) is arranged in the support (30), a third bevel gear (28) is arranged at the end of the rotating shaft (26), the third bevel gear (28) is in meshing transmission connection with a fourth bevel gear (29), the fourth bevel gear (29) is connected with a constant temperature rotating shaft (27) coaxially arranged with the coal spraying pipe (1), the thermostatic plate (3) is arranged on the side wall of the constant temperature rotating shaft (27), the thermostatic plate (3) is in a spiral shape, and a containing cavity for containing the third bevel gear (28) and the fourth bevel gear (29) is arranged in the support (30).
6. The all-round kiln tail coal sprayer of a burner as claimed in claim 1, characterized in that the upper and lower angle pieces (34) comprise a counterweight sleeve connected with the other end of the coal spraying pipe (1), the counterweight sleeve is provided with a counterweight block, the counterweight sleeve is connected with the counterweight block in a sliding manner, the counterweight sleeve is provided with a clamping piece, and the counterweight block is provided with a clamping groove matched with the clamping piece.
7. The all-directional kiln tail coal sprayer of the burner according to claim 6, characterized in that a housing (35) is arranged outside the coal spraying pipe (1), an upper moving member (33) and a lower moving member (33) connected with the coal spraying pipe (1) are arranged in the housing (35), the upper moving member (33) and the lower moving member are connected with a left moving member (32) and a right moving member (32) which are positioned at the upper part in the housing (35), a pipe outlet is formed in the housing (35), one end of the coal spraying pipe (1) provided with the spraying barrel (4) can be moved out of the housing (35) through the pipe outlet, the left moving member (32) and the right moving member (32) are used for controlling the coal spraying pipe (1) to move left and right, and the upper moving member (33) and the lower moving member (33) are used for controlling the coal spraying pipe (1) to move up and down.
8. The use method of the all-round kiln tail coal sprayer of the burner as claimed in claim 1 is characterized by comprising the following steps: coal powder is input into the coal injection pipe (1) through the coal inlet pipe (31), the coal powder in the coal injection pipe (1) enters the adjusting chamber (7) through the thermostatic plate (3), the rotating shaft (26) is controlled to rotate, the driving rotating shaft (10) and the driving rotary drum (11) are driven to rotate, due to the arrangement of the annular sliding groove and the sliding block (19), the driving rotary drum (11) is driven to rotate, the material receiving plate (18) is driven to overturn around the driving rotating shaft (17), the coal powder enters the material receiving plate (18) in the adjusting chamber (7), the driving rotary drum (11) rotates to drive the material receiving plate (18) to be converted from a horizontal state to a vertical state, the coal powder on the material receiving plate (18) is poured into the injection cylinder (4), and then the coal powder is sprayed out through the injection cylinder (4).
9. The burner is provided with a coal sprayer, the coal sprayer is the coal sprayer according to claim 7 and is characterized by comprising a kiln, a kiln opening is formed in the kiln, the kiln is communicated with a waste heat air pipe, the shell (35) is arranged on one side of the kiln, and the coal spraying pipe (1) in the shell (35) sequentially passes through the pipe outlet and the kiln opening to enter the kiln.
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| CN202210651195.0A CN115031230B (en) | 2022-06-09 | 2022-06-09 | Omnibearing kiln tail coal sprayer of combustor, use method and combustor |
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| WO2004087601A1 (en) * | 2003-02-24 | 2004-10-14 | Posco | METHOD AND BURNER APPARATUS FOR INJECTING A PULVERIZED COAL INTO ROTARY KILNS, METHOD AND APPARATUS FOR PRODUCING CaO USING THEM |
| CN201981216U (en) * | 2011-03-07 | 2011-09-21 | 佟健 | Long-distance injection device for coal powder injection of blast furnace |
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| WO2022087860A1 (en) * | 2020-10-28 | 2022-05-05 | 江苏惠然实业有限公司 | Rotary kiln roasting structure and and roasting process therefor |
| CN214665949U (en) * | 2021-04-27 | 2021-11-09 | 邢台建德水泥有限公司 | Rotary kiln capable of improving coal burning efficiency |
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