Auxiliary rotary kiln coal injection duct positioning tool
By designing an auxiliary rotary kiln coal injection pipe positioning tool and using a laser pen fixture to adjust the center axis of the coal injection pipe, the problem of inaccurate coal injection pipe positioning was solved, the precise alignment of the kiln mouth position was achieved, and the accuracy of the calcination operation was improved.
Patent Information
- Application Number
- CN202422857505.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-21
AI Technical Summary
In the prior art, the coal injection pipe is not accurately positioned at the kiln mouth of the rotary kiln, and is difficult to align with the center of the kiln mouth, resulting in large errors in the calcining operation.
A tool to assist in positioning the coal injection pipe of a rotary kiln is designed. The tool includes a fixing assembly and a laser pen fixing part. The laser is emitted toward the kiln mouth, and the central axis of the coal injection pipe is adjusted by the laser landing point so that it is accurately aligned with the center of the kiln mouth to avoid the kiln skin affecting the positioning.
The positioning accuracy of the coal injection pipe at the kiln mouth is improved, ensuring the accuracy and efficiency of the calcination operation.
Smart Images
Figure CN223388912U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermal equipment structure design, in particular to a positioning tool for an auxiliary rotary kiln coal injection pipe. Background Art
[0002] The kiln mouth of a rotary kiln is usually circular. The coal injection pipe needs to be aligned with the kiln mouth of the rotary kiln during clinker calcining operations. At this time, the output port of the coal injection pipe is aligned with the position of the kiln mouth of the rotary kiln, and the central axis of the coal injection pipe needs to pass through the center of the kiln mouth of the rotary kiln as much as possible. Clinker calcining operations are carried out in this state. In actual circumstances, a certain thickness of kiln lining will be attached to the kiln mouth of the rotary kiln. The kiln lining is naturally generated due to long-term clinker calcining operations. Since the thickness of the kiln lining at different positions is different, if the center position is measured and calculated directly from the kiln mouth, the thickness of the kiln lining will cause a large error in the measurement and calculation of the center position. Therefore, it is inaccurate to locate the center of the circle only at the kiln mouth of the rotary kiln, and it is difficult to position the coal injection pipe to the correct position.
[0003] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in this technical field. Utility Model Content
[0004] The problem to be solved by the utility model is how to improve the positioning accuracy of the coal injection pipe at the kiln mouth before the clinker calcination operation is carried out.
[0005] In a first aspect, a tool for assisting the positioning of a rotary kiln coal injection pipe is provided, comprising: a fixing assembly, wherein:
[0006] One end of the fixing assembly is a docking piece 1, and the other end of the fixing assembly is a laser pen fixing piece 2. The docking piece 1 and the laser pen fixing piece 2 are located on the same central axis.
[0007] The docking member 1 is used to be arranged in the output port of the coal injection pipe 3, and the inner side wall of the output port of the coal injection pipe 3 is sleeved on the outer periphery of the docking member 1;
[0008] The laser pen fixture 2 is in the shape of a hollow cylinder. A laser pen is set inside the laser pen fixture 2. The laser pen is located on the central axis of the laser pen fixture 2. The laser pen fixture 2 is set toward the kiln mouth 41 of the rotary kiln 4. The laser pen in the laser pen fixture 2 is directed toward the kiln mouth 41 of the rotary kiln 4 to emit laser light, so that the laser light falls on the area without kiln lining in the rotary kiln 4.
[0009] Preferably, the docking member 1 is cylindrical;
[0010] The difference between the outer radius of the butt joint 1 and the inner wall radius of the output port of the coal injection pipe 3 is 1±0.5 mm.
[0011] Preferably, the docking member 1 and the laser pen fixing member 2 are integrally formed.
[0012] Preferably, the docking member 1 is further provided with a second connecting portion 5, wherein:
[0013] The second connecting portion 5 and the docking member 1 are located on the same central axis;
[0014] The second connecting portion 5 is used to connect with the laser pen fixing member 2 , and the second connecting portion 5 and the laser pen fixing member 2 are located on the same central axis.
[0015] Preferably, the length of the docking piece 1 is 40±1 mm.
[0016] Preferably, the length of the second connecting portion 5 is 40±1 mm.
[0017] Preferably, the laser pen fixing member 2 is further provided with a third connecting portion 6, wherein:
[0018] The third connecting portion 6 and the laser pointer fixing member 2 are located on the same central axis;
[0019] The third connection portion 6 is sleeved on the periphery of the second connection portion 5 to achieve docking between the third connection portion 6 and the second connection portion 5 .
[0020] Preferably, the third connection portion 6 is in a truncated cone shape, and its diameter gradually increases from the end facing the second connection portion 5 to the end facing away from the second connection portion 5 .
[0021] Preferably, an accommodating through hole 21 is provided at the center axis position of the laser pen fixing member 2;
[0022] The accommodating through hole 21 is used for placing a laser pen.
[0023] Preferably, the laser pen fixing member 2 is provided with at least three screw holes 22 , and the at least three screw holes 22 are evenly distributed around the circumference of the laser pen fixing member 2 , and each of the screw holes 22 leads to the accommodating through hole 21 ;
[0024] Each screw hole 22 is used to set an adjustment screw. By adjusting the depth of the adjustment screw inserted into the accommodating through hole 21 , the position of the laser pen in the accommodating through hole 21 is adjusted so that the laser pen is located on the central axis of the accommodating through hole 21 .
[0025] The utility model provides a tool for assisting the positioning of a coal injection pipe of a rotary kiln, comprising: a fixing component, wherein: one end of the fixing component is a docking component 1, and the other end of the fixing component is a laser pen fixing component 2, the docking component 1 and the laser pen fixing component 2 are located on the same central axis; the docking component 1 is used to be arranged in the output port of the coal injection pipe 3, and the inner side wall of the output port of the coal injection pipe 3 is sleeved on the outer periphery of the docking component 1; the laser pen fixing component 2 is hollow cylindrical, and a laser pen is arranged in the laser pen fixing component 2, and the laser pen is located on the central axis of the laser pen fixing component 2, and the laser pen fixing component 2 is used to be arranged toward the kiln mouth 41 of the rotary kiln 4, and the laser pen in the laser pen fixing component 2 is emitted toward the kiln mouth 41 of the rotary kiln 4, and the output port of the coal injection pipe 3 is positioned by the landing point of the laser in the laser pen, so that the central axis of the coal injection pipe 3 passes through the center position of the kiln mouth 41, thereby avoiding the kiln skin near the kiln mouth 41 from affecting the measurement data, thereby improving the positioning accuracy of the coal injection pipe 3. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0027] Figure 1 A schematic diagram of a device for assisting the positioning of a rotary kiln coal injection pipe provided by an embodiment of the utility model;
[0028] Figure 2 A schematic diagram of the structure of a rotary kiln coal injection pipe positioning tool provided by an embodiment of the utility model in actual application;
[0029] Figure 3 A schematic diagram of another device for assisting the positioning of a rotary kiln coal injection pipe provided by an embodiment of the utility model;
[0030] Figure 4 A cross-sectional view of a butt joint and a second connecting portion of a rotary kiln coal injection pipe positioning tool provided by an embodiment of the utility model;
[0031] Figure 5 A cross-sectional view of a laser pen fixing member and a third connecting portion of a rotary kiln coal injection pipe positioning tool provided by an embodiment of the utility model;
[0032] Figure 6 A cross-sectional view of a laser pen fixing member of a rotary kiln coal injection pipe positioning tool provided by an embodiment of the utility model;
[0033] The accompanying drawings are numbered as follows:
[0034] Docking member 1; laser pen fixing member 2; accommodating through hole 21; screw hole 22; coal injection pipe 3; rotary kiln 4; kiln mouth 41; second connecting portion 5; third connecting portion 6. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0036] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.
[0037] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "multiple" means two or more. In addition, for example, the description may also use the method of adding "A" and "B" at the end to describe the same type of nouns as two independent individuals. In this case, the corresponding features defined as "A" and "B" are only used to distinguish the description purposes of the same type of individuals, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.
[0038] When describing some embodiments, the expressions “coupling”, “coupling” and “connection” and their derivatives may be used. For example, when describing some embodiments, the term “connection” may be used to indicate that two or more components are in direct physical or electrical contact with each other. For another example, when describing some embodiments, the term “coupling” may be used to indicate that two or more components are in direct physical or electrical contact. However, the term “connection” or “coupling” may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other, such as “optical coupling”, “wireless connection”, etc. The embodiments disclosed here are not necessarily limited to the contents of the present invention.
[0039] In the description of the present invention, "A and / or B" will be mentioned, where A and B are used to formally represent specific characteristic contents. The corresponding expressions include the following three combinations: only A, only B, and a combination of A and B.
[0040] As used herein, “about,” “substantially,” or “approximately” includes the stated value and an average value that is within an acceptable range of deviation from the particular value as determined by one of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity, i.e., the limitations of the measurement system.
[0041] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as meaning open inclusion, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that the specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner, that is, although they may be carried in the embodiments or examples of the above terms due to reasons such as the order and position of appearance, it is not limited to that they can be carried in combination by one embodiment or example.
[0042] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0043] Example 1:
[0044] This embodiment provides a tool for assisting the positioning of the coal injection pipe of a rotary kiln. Figure 1 and Figure 2 As shown, the device comprises a fixing assembly, wherein one end of the fixing assembly is a docking member 1, and the other end is a laser pen holder 2, the docking member 1 and the laser pen holder 2 being located on the same central axis. The docking member 1 is configured to be mounted within the outlet of a coal injection pipe 3, with the inner sidewall of the outlet of the coal injection pipe 3 being sleeved onto the outer periphery of the docking member 1. The laser pen holder 2 is hollow and cylindrical, and is configured to house a laser pen located on its central axis. The laser pen holder 2 is configured to be positioned toward the kiln opening 41 of the rotary kiln 4. The laser pen in the laser pen holder 2 is directed toward the kiln opening 41 of the rotary kiln 4 to emit laser light, directing the laser light onto an area within the rotary kiln 4 that is free of kiln lining.
[0045] The docking member 1 and the fixing assembly can be integrally formed or comprised of two detachable components. In this embodiment, the docking member 1 is cylindrical, and its outer dimensions are slightly smaller than the dimensions of the outlet of the coal injection pipe 3, ensuring that the docking member 1 can be inserted into the outlet of the coal injection pipe 3. When the coal injection pipe 3 is positioned horizontally, the outlet of the coal injection pipe 3 can retain the docking member 1, preventing it from being removed from the outlet of the coal injection pipe 3. Furthermore, since the outer dimensions of the docking member 1 are similar to the dimensions of the outlet of the coal injection pipe 3, the central axis of the docking member 1 and the central axis of the coal injection pipe 3 can be considered to be consistent. Since the docking member 1 and the laser pen fixing member 2 are located on the same central axis, the laser pen fixed in the laser pen fixing member 2 is located on the central axis of the laser pen fixing member 2. Therefore, the laser light emitted by the laser pen fixed in the laser pen fixing member 2 can be considered to be the central axis of the coal injection pipe 3. Adjusting the laser light emitted by the laser pen to a specified position can adjust the central axis of the coal injection pipe 3 to the specified position.
[0046] In actual application, the reference landing point of the laser can be marked on the inner wall of the rotary kiln 4 in advance, and the horizontal line where the reference landing point is located will pass through the center of the kiln mouth 41; when the auxiliary rotary kiln coal injection pipe positioning tool provided in this embodiment is used to position the coal injection pipe 3, the coal injection pipe 3 can be carried by a trolley on a fixed track, and a fixed component is set on the output end of the coal injection pipe 3 to control the trolley to transport the coal injection pipe 3 to the position of the kiln mouth 41 so that the output end of the coal injection pipe 3 and the kiln mouth 41 are aligned; the technician enters the rotary kiln to observe the positional relationship between the actual landing point of the laser on the inner wall of the rotary kiln 4 and the reference landing point; the range between the reference landing point and the kiln mouth 41 is taken as the front, and the range of the reference landing point facing away from the kiln mouth 41 is taken as the back When the actual landing point of the laser is before the reference landing point, it means that one end of the output port of the coal injection pipe 3 is tilted downward, and it is necessary to adjust one end of the output port of the coal injection pipe 3 upward until the actual landing point of the laser is moved to the same horizontal height as the reference landing point; when the reference landing point of the laser is after the reference landing point, it means that one end of the output port of the coal injection pipe 3 is tilted upward, and it is necessary to adjust one end of the output port of the coal injection pipe downward until the actual landing point of the laser is moved to the same horizontal height as the reference landing point; then, according to the position difference between the actual landing point of the laser and the reference landing point at the same horizontal height, adjust the left and right deflection of the coal injection pipe 3 until the actual landing point of the laser coincides with the reference landing point, and at this time, the coal injection pipe 3 is positioned.
[0047] In this embodiment, since the rotary kiln 4 has a certain inclination when it is set, the inclination is usually 2.29°±0.01°, and the radius of the kiln mouth 41 of the rotary kiln 4 is usually 2.4±0.1m. Figure 2As shown, one end of the kiln mouth 41 of the rotary kiln 4 is inclined downward, and the other end of the rotary kiln 4 is inclined upward, and the length of the rotary kiln 4 is relatively long. The coal injection pipe 3 needs to be kept horizontal and placed at the kiln mouth 41 during the clinker calcining operation. Therefore, the laser emitted by the fixed component arranged at the output port of the coal injection pipe 3 will hit the lower inner wall of the rotary kiln 4. Since the inclination angle of the rotary kiln 4 is small, taking the inclination angle of the rotary kiln 4 as 2.29° and the kiln mouth 41 radius of 2.4m as an example, the distance between the reference landing point on the inner wall of the rotary kiln 4 and the kiln mouth 41 is 60 meters, and the kiln skin is usually generated at a position extending 20m to 25m from the kiln mouth position to the inside of the rotary kiln. Therefore, there is basically no kiln skin at the landing point of the laser on the inner wall of the rotary kiln 4, and there will be no positioning error due to the kiln skin. By adjusting the position of the landing point of the laser on the inner wall of the rotary kiln 4, the coal injection pipe 3 can be positioned relatively accurately.
[0048] In this embodiment, in order to ensure stable docking between the docking member 1 and the output port of the coal injection pipe 3, the outer contour of the docking member 1 needs to match the size and shape of the inner sidewall of the output port of the coal injection pipe 3. Therefore, this embodiment also involves the following design: the docking member 1 is cylindrical; the difference between the outer radius of the docking member 1 and the radius of the inner sidewall of the output port of the coal injection pipe 3 is 1±0.5mm.
[0049] Furthermore, in this embodiment, considering that the entire fixing assembly itself has a certain weight, it is necessary to ensure that the docking piece 1 is inserted into the output port of the coal injection pipe 3 to a sufficient length, so as to prevent the fixing assembly from falling off from the output port of the coal injection pipe 3 due to the weight of the fixing assembly. Therefore, this embodiment also involves the following design: the length of the docking piece 1 is 40±1 mm.
[0050] Furthermore, in this embodiment, the docking component 1 and the laser pen fixing component 2 can be an integrally formed structure, which makes the device easier to carry during actual use. At the same time, due to the integrally formed structure, the length of the entire device is longer. When the docking component 1 is inserted into the output port of the coal injection pipe 3, the entire device cannot be completely immersed in the output port. A large part of the device must extend out of the output port, and the situation where the device is completely immersed in the output port and cannot be removed from the output port will not occur. On this basis, the docking component 1 can be inserted into the output port of the coal injection pipe 3 for a longer length, making it less likely that the laser pen fixing component 2 will fall out of the output port.
[0051] This embodiment also involves the following designs: Figure 3 and Figure 4 As shown, the docking member 1 is further provided with a second connecting portion 5, wherein: the second connecting portion 5 and the docking member 1 are located on the same central axis; the second connecting portion 5 is used to dock with the laser pen fixing member 2, and the second connecting portion 5 and the laser pen fixing member 2 are located on the same central axis.
[0052] like Figure 3 and Figure 5 As shown, the laser pen fixing part 2 is further provided with a third connecting part 6, wherein: the third connecting part 6 and the laser pen fixing part 2 are located on the same central axis; the third connecting part 6 is sleeved on the periphery of the second connecting part 5 to achieve docking of the third connecting part 6 and the second connecting part 5.
[0053] In this embodiment, the second connecting portion 5 is cylindrical, and the length of the second connecting portion 5 can be 40±1 mm, and the outer diameter of the second connecting portion 5 can be 39.5±0.5 mm. The third connecting portion 6 is provided with a through hole at the central axis position, and the inner diameter of the through hole can be 40±0.5 mm. The through hole is used to be sleeved on the outer periphery of the second connecting portion 5. In actual use, the docking member 1 can be first inserted into the output port of the coal injection pipe 3. The docking member 1 is first firmly inserted into the output port and fixed securely to prevent the docking member 1 from falling out of the output port during the docking process. After the docking member 1 is firmly docked, the third connecting portion 6 and the second connecting portion 5 are docked. Since the weight of a single docking member 1 is lighter than that of an integrally formed one, the docking member 1 is more stable when docking with the output port of the coal injection pipe 3, making the docking between the docking member and the output port more stable, and the docking member 1 is less likely to fall out of the output port during operation.
[0054] In this embodiment, in order to further reduce the overall weight of the fixing assembly and thereby further improve the docking stability between the docking portion and the output port, this embodiment also involves the following designs:
[0055] like Figure 3 and Figure 5 As shown, the third connection portion 6 is in a truncated cone shape, and its diameter gradually increases from the end facing the second connection portion 5 to the end facing away from the second connection portion 5 .
[0056] In this embodiment, the third connecting portion 6 is truncated cone-shaped. The diameter of the end of the third connecting portion 6 facing the second connecting portion 5 can be 40±0.5 mm, and the diameter of the end of the third connecting portion 6 facing away from the second connecting portion 5 can be 100±0.5 mm. The truncated cone-shaped third connecting portion 6 reduces the material used, thereby reducing the overall weight of the fixing assembly.
[0057] Furthermore, in this embodiment, a laser pen is also provided in the laser pen fixture 2, so the laser pen fixture 2 requires a corresponding limiting and fixing structure of the laser pen. Therefore, this embodiment also involves the following designs: Figure 3 、 Figure 5 and Figure 6As shown, an accommodating through-hole 21 is provided at the central axis position of the laser pen fixing part 2; the accommodating through-hole 21 is used to place the laser pen; at least three screw holes 22 are provided on the laser pen fixing part 2, and the at least three screw holes 22 are evenly distributed at the circumference position of the laser pen fixing part 2, and each of the screw holes 22 leads to the accommodating through-hole 21; each of the screw holes 22 is used to set an adjusting screw, and by adjusting the depth of the adjusting screw inserted into the accommodating through-hole 21, the position of the laser pen in the accommodating through-hole 21 is adjusted so that the laser pen is located on the central axis of the accommodating through-hole 21.
[0058] In this embodiment, a corresponding accommodating through-hole 21 is provided at the central axis position of the laser pen fixing member 2 for placing the laser pen. The diameter of the accommodating through-hole 21 is slightly larger than the outer diameter of the adapted laser pen, and is used to place the laser pen in the laser pen fixing member 2. At the same time, in order to ensure that the laser pen is located at the central axis position of the accommodating through-hole 21, each adjusting screw is adjusted so that each adjusting screw is evenly abutted against the peripheral position of the laser pen, so that the laser pen is limited and fixed on the central axis of the accommodating through-hole 21.
[0059] In this embodiment, when the laser pointer holder 2 is provided with three screw holes 22, the angle between two adjacent screw holes 22 and the perpendicular line connecting the central axis of the receiving through hole 21 can be 120 degrees. This ensures that the abutment force exerted by each adjustment screw on the laser pointer is uniform, achieving stable positioning. In this embodiment, the length of the laser pointer holder 2 can be 100±0.5mm to match the length of the laser pointer.
[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A tool for assisting the positioning of a rotary kiln coal injection pipe, characterized in that: include: A fixed assembly, wherein: One end of the fixing assembly is a docking piece (1), and the other end of the fixing assembly is a laser pen fixing piece (2), and the docking piece (1) and the laser pen fixing piece (2) are located on the same central axis; The docking piece (1) is used to be arranged in the output port of the coal injection pipe (3), and the inner side wall of the output port of the coal injection pipe (3) is sleeved on the outer periphery of the docking piece (1); The laser pen fixing part (2) is in the shape of a hollow cylinder. A laser pen is arranged in the laser pen fixing part (2). The laser pen is located on the central axis of the laser pen fixing part (2). The laser pen fixing part (2) is arranged toward the kiln opening (41) of the rotary kiln (4). The laser pen in the laser pen fixing part (2) emits laser light toward the kiln opening (41) of the rotary kiln (4), so that the laser light is projected onto an area without a kiln lining in the rotary kiln (4).
2. The auxiliary rotary kiln coal injection pipe positioning tool according to claim 1, characterized in that: The docking piece (1) is cylindrical; The difference between the outer radius of the docking piece (1) and the inner wall radius of the output port of the coal injection pipe (3) is 1±0.5 mm.
3. The auxiliary rotary kiln coal injection pipe positioning tool according to claim 1, characterized in that: The docking piece (1) and the laser pen fixing piece (2) are integrally formed.
4. The auxiliary rotary kiln coal injection pipe positioning tool according to claim 1, characterized in that: The docking piece (1) is further provided with a second connecting portion (5), wherein: The second connecting portion (5) and the docking member (1) are located on the same central axis; The second connecting portion (5) is used for docking with the laser pen fixing member (2); the second connecting portion (5) and the laser pen fixing member (2) are located on the same central axis.
5. The auxiliary rotary kiln coal injection pipe positioning tool according to claim 4, characterized in that: The length of the docking piece (1) is 40±1 mm.
6. The auxiliary rotary kiln coal injection pipe positioning tool according to claim 4, characterized in that: The length of the second connecting portion (5) is 40±1 mm.
7. The auxiliary rotary kiln coal injection pipe positioning tool according to claim 4, characterized in that: The laser pen fixing member (2) is further provided with a third connecting portion (6), wherein: The third connecting portion (6) and the laser pen fixing member (2) are located on the same central axis; The third connecting portion (6) is sleeved on the periphery of the second connecting portion (5), thereby achieving docking of the third connecting portion (6) and the second connecting portion (5).
8. The auxiliary rotary kiln coal injection pipe positioning tool according to claim 7, characterized in that: The third connecting portion (6) is in a truncated cone shape, and its diameter gradually increases from one end facing the second connecting portion (5) to the end facing away from the second connecting portion (5).
9. The auxiliary rotary kiln coal injection pipe positioning tool according to claim 7, characterized in that: An accommodating through hole (21) is provided at the center axis position of the laser pen fixing member (2); The accommodating through hole (21) is used for placing a laser pen.
10. The auxiliary rotary kiln coal injection pipe positioning tool according to claim 9, characterized in that: At least three screw holes (22) are provided on the laser pen fixing member (2), and the at least three screw holes (22) are evenly distributed around the circumference of the laser pen fixing member (2), and each of the screw holes (22) leads to the accommodating through hole (21); Each screw hole (22) is used to set an adjustment screw, and by adjusting the depth of the adjustment screw inserted into the accommodating through hole (21), the position of the laser pen in the accommodating through hole (21) is adjusted so that the laser pen is located on the central axis of the accommodating through hole (21).