Kiln head coal injection duct burner
By introducing heating tubes and heat-conducting fins/fin structures into the pulverized coal injection burner at the kiln head, combined with filter barrels and brush assemblies, the problems of poor pulverized coal preheating and insufficient energy-saving effect were solved, achieving more efficient pulverized coal combustion and energy-saving effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 龙里红狮水泥有限公司
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-12
AI Technical Summary
Existing kiln head pulverized coal injection burners suffer from poor pulverized coal preheating and insufficient energy-saving effects.
A kiln head pulverized coal injection pipe burner was designed, which uses heating pipes, heat-conducting fins and heat-conducting fins to heat the pulverized coal conveying pipe and air supply pipe, and uses a filter barrel and brush assembly to prevent clogging. It utilizes recovered hot air for heating, thereby improving the preheating effect and energy saving effect.
It improves the preheating effect and practicality of the kiln head pulverized coal burner, avoids filter clogging, and achieves more efficient pulverized coal combustion and energy-saving effects.
Smart Images
Figure CN224229988U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of kiln head pulverized coal injection pipe burners, specifically a kiln head pulverized coal injection pipe burner. Background Technology
[0002] In recent years, extensive research has been conducted both domestically and internationally on rotary kiln swirl-type four-channel pulverized coal burners. From 1985 to 1987, Germany, France, Denmark, Austria, and other countries successively developed and manufactured different types of swirl-type four-channel pulverized coal burners, whose structure consists of a head tube, a middle tube, and a lower coal tube.
[0003] The existing Chinese utility model patent with publication number CN216307770U discloses a pulverized coal burner, including a rotary kiln body, a pulverized coal burner, a coal air duct, and a clean air duct. A kiln door is installed at the end of the rotary kiln body. The coal air duct surrounds the outside of the rotary kiln body and is fixed by a heating pipe support frame. The clean air duct surrounds the outside of the rotary kiln body and is fixed by a heating pipe support frame. A heat-reflecting plate is installed on the outside of both the coal air duct and the clean air duct. The two ends of the coal air duct are connected to the pulverized coal burner and a coal air fan, respectively. The two ends of the clean air duct are also connected to the pulverized coal burner and a clean air fan, respectively. The inner ring of the airflow inlet of the pulverized coal burner is a central air duct, and a coal air duct is installed outside the central air duct. Spiral blades are installed on the inner wall of the coal air duct, and a swirling air duct is installed outside the coal air duct. An outer air duct is installed outside the swirling air duct. The beneficial effects of this utility model are to promote coal air circulation, improve the mixing of coal air and clean air, and improve combustion efficiency and burnout.
[0004] Although the aforementioned pulverized coal burner has solved the problem of incomplete pulverized coal combustion and limited improvement in burnout rate through spiral blades, the existing kiln head pulverized coal injection pipe burner has poor preheating effect on pulverized coal and insufficient energy-saving effect. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a kiln head pulverized coal injection pipe burner, which has advantages such as excellent preheating effect and energy saving effect, thus solving the above-mentioned technical problems.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a kiln head pulverized coal injection pipe burner, comprising:
[0009] A pulverized coal conveying pipe has a heating pipe fixedly installed on its outer side, an air inlet pipe fixedly installed on one side of the top of the heating pipe, a thermometer fixedly installed in the middle of the air inlet pipe, a connecting pipe fixedly installed on one side of the bottom of the heating pipe, an installation pipe fixedly installed at the bottom of the connecting pipe, an air outlet pipe fixedly installed on one side of the bottom of the installation pipe, a bend fixedly installed on the top of the air inlet pipe, a filter pipe fixedly installed on one side of the bend pipe, a drive motor fixedly installed at the bottom of the filter pipe, a rotating plate fixedly installed on the top of the drive motor, two brushes fixedly installed on both sides of the top of the rotating plate, a filter barrel movably connected inside the filter pipe, and a splicing pipe movably connected to the top of the filter pipe.
[0010] As a preferred embodiment of this utility model, a temperature detector is fixedly installed on one side of the outer side of the pulverized coal conveying pipe, and a heat-conducting fin is fixedly installed on the other side of the outer side of the pulverized coal conveying pipe, wherein the heat-conducting fin can conduct heat.
[0011] As a preferred embodiment of this utility model, a pulverized coal fan is fixedly installed on the left side of the pulverized coal conveying pipe, and an air supply pipe is fixedly installed on one side of the bottom of the pulverized coal conveying pipe. The air supply pipe is a structure used for air supply.
[0012] As a preferred technical solution of this utility model, the air supply duct is in the shape of an "L" and a temperature detector is fixedly installed on one side of the outer side of the air supply duct. The temperature detector can detect the temperature inside the air supply duct.
[0013] As a preferred embodiment of this utility model, a heat-conducting fin is fixedly installed on the other side of the outer side of the air supply pipe, and a blower is fixedly installed on the left side of the air supply pipe. The blower is a structure used for blowing air.
[0014] As a preferred embodiment of this utility model, a burner body is fixedly installed on the right side of the pulverized coal conveying pipe.
[0015] As a preferred embodiment of this utility model, a heating device is fixedly installed on the outside of the burner body. The heating device is a structure used to heat the pulverized coal and air inside the burner body.
[0016] Compared with the prior art, this utility model provides a kiln head pulverized coal injection pipe burner, which has the following characteristics:
[0017] Beneficial effects:
[0018] 1. This utility model connects the splicing pipe and the filter pipe, allowing hot air to be sent into the filter barrel. The filter barrel filters the hot air, preventing dust and impurities in the hot air from entering the equipment. The operation of the drive motor drives the rotating plate to rotate, which in turn drives the two brushes to rotate. The rotation of the brushes cleans the filter barrel, preventing clogging and improving the practicality and filtration effect of the kiln head pulverized coal burner.
[0019] 2. This utility model uses a thermometer to detect the temperature inside the air inlet pipe, and sends hot air into the heating pipe. The heat-conducting fins absorb the heat to heat the coal powder inside the coal powder conveying pipe. The hot air is sent into the installation pipe through the connecting pipe, and the heat-conducting fins absorb the heat to heat the air supply pipe. This improves the practicality and heating effect of the kiln head coal injection pipe burner. At the same time, the recovery of hot air for heating achieves energy saving. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the pulverized coal conveying pipe of this utility model;
[0022] Figure 3 This is a schematic diagram of the heating element of this utility model;
[0023] Figure 4 This is a schematic diagram of the bend in this utility model.
[0024] The components include: 1. Pulverized coal conveying pipe; 11. Temperature detector; 12. Heat-conducting fins; 13. Pulverized coal fan; 14. Air supply pipe; 15. Temperature detector; 16. Heat-conducting fins; 17. Blower; 18. Burner body; 19. Heating device; 2. Heating tube; 21. Air inlet pipe; 22. Thermometer; 23. Connecting pipe; 24. Installation pipe; 25. Air outlet pipe; 3. Bend; 31. Filter pipe; 32. Drive motor; 33. Rotating plate; 34. Brush; 35. Filter barrel; 36. Splicing pipe. Detailed Implementation
[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0026] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] Please see Figure 1 - Figure 4 In this embodiment, a kiln head pulverized coal injection pipe burner includes: a pulverized coal conveying pipe 1, a temperature detector 11 fixedly installed on one side of the outer side of the pulverized coal conveying pipe 1, a heat-conducting fin 12 fixedly installed on the other side of the outer side of the pulverized coal conveying pipe 1, a pulverized coal fan 13 fixedly installed on the left side of the pulverized coal conveying pipe 1, an air supply pipe 14 fixedly installed on one side of the bottom of the pulverized coal conveying pipe 1, the air supply pipe 14 being L-shaped, a temperature detector 15 fixedly installed on one side of the outer side of the air supply pipe 14, a heat-conducting fin 16 fixedly installed on the other side of the outer side of the air supply pipe 14, a blower 17 fixedly installed on the left side of the air supply pipe 14, a burner body 18 fixedly installed on the right side of the pulverized coal conveying pipe 1, and a heating device 19 fixedly installed on the outer side of the burner body 18.
[0029] Specifically, the temperature of the heated coal powder can be detected by the temperature detector 11 on one side of the top of the coal powder conveying pipe 1, the coal powder conveying pipe 1 can be heated by the heat-conducting fin 12, and the air supply pipe 14 can be heated by the heat-conducting fin 16.
[0030] A heating pipe 2 is fixedly installed on the outside of the pulverized coal conveying pipe 1. An air inlet pipe 21 is fixedly installed on one side of the top of the heating pipe 2. A thermometer 22 is fixedly installed in the middle of the air inlet pipe 21. A connecting pipe 23 is fixedly installed on one side of the bottom of the heating pipe 2. An installation pipe 24 is fixedly installed at the bottom of the connecting pipe 23. An air outlet pipe 25 is fixedly installed on one side of the bottom of the installation pipe 24.
[0031] Specifically, hot air can be sent in through the air inlet pipe 21, the temperature of the hot air can be detected through the thermometer 22, the hot air inside the heating tube 2 can be sent into the installation tube 24 through the connecting pipe 23, and the heat-exchanged gas can be discharged through the air outlet pipe 25.
[0032] A bend 3 is fixedly installed at the top of the air inlet duct 21. A filter tube 31 is fixedly installed on one side of the bend duct 3. A drive motor 32 is fixedly installed at the bottom of the filter tube 31. A rotating plate 33 is fixedly installed at the top of the drive motor 32. Two brushes 34 are fixedly installed on both sides of the top of the rotating plate 33. A filter barrel 35 is movably connected inside the filter tube 31. A splicing pipe 36 is movably connected at the top of the filter tube 31.
[0033] Specifically, by fitting the splicing pipe 36 and the filter pipe 31 together, hot air can be sent into the interior of the filter barrel 35, and the filter barrel 35 can filter the hot air. The drive motor 32 can drive the rotating plate 33 to rotate, so that the brush 34 can rotate against the outside of the filter pipe 31, thereby preventing the filter pipe 31 from clogging.
[0034] In operation, the pulverized coal conveying pipe 1 transports pulverized coal through the pulverized coal blower 13. The blower 17 delivers air into the pulverized coal conveying pipe 14 via the air supply pipe 14. The temperature detector 11 monitors the temperature inside the pulverized coal conveying pipe 1. The burner body 18 sprays out pulverized coal for simultaneous combustion. The splicing pipe 36 delivers hot air into the filter barrel 35, where impurities and dust are filtered. The filtered hot air is then delivered into the air inlet pipe 21 through the bend pipe 3. The drive motor 32 rotates the two brushes 34 via the rotating plate 33, brushing the outside of the filter barrel 35. This prevents clogging of the filter barrel 35, improving filtration efficiency and enhancing the overall performance of the kiln head. The practicality of the pulverized coal injection burner is enhanced by the threaded connection between the splicing pipe 36 and the filter pipe 31, which facilitates the disassembly and cleaning of the filter barrel 35. The filtered hot air is sent into the interior of the heating pipe 2, where the heat-conducting fins 12 absorb heat to heat the interior of the pulverized coal conveying pipe 1. The hot air is then sent into the interior of the installation pipe 24 via the connecting pipe 23, where the heat-conducting fins 16 absorb heat to heat the air supply pipe 14. This improves the practicality and heating effect of the kiln head pulverized coal injection burner and also achieves energy saving. The heat-exchanged hot air is discharged through the air outlet pipe 25, and the temperature of the heated air can be detected by the temperature detector 15. The heating device 19 can heat the pulverized coal and air inside the burner body 18, further enhancing the practicality of the kiln head pulverized coal injection burner.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A kiln head pulverized coal injection pipe burner, characterized in that, The kiln head pulverized coal injection burner includes a pulverized coal conveying pipe (1), a heating pipe (2) fixedly installed on the outside of the pulverized coal conveying pipe (1), an air inlet pipe (21) fixedly installed on one side of the top of the heating pipe (2), a thermometer (22) fixedly installed in the middle of the air inlet pipe (21), a connecting pipe (23) fixedly installed on one side of the bottom of the heating pipe (2), an installation pipe (24) fixedly installed at the bottom of the connecting pipe (23), and an air outlet pipe (25) fixedly installed on one side of the bottom of the installation pipe (24). A bend (3) is fixedly installed on the top of the air inlet duct (21), a filter pipe (31) is fixedly installed on one side of the bend (3), a drive motor (32) is fixedly installed on the bottom of the filter pipe (31), a rotating plate (33) is fixedly installed on the top of the drive motor (32), two brushes (34) are fixedly installed on both sides of the top of the rotating plate (33), a filter barrel (35) is movably connected inside the filter pipe (31), and a splicing pipe (36) is movably connected to the top of the filter pipe (31).
2. The kiln head pulverized coal injection pipe burner according to claim 1, characterized in that: A temperature detector (11) is fixedly installed on one side of the pulverized coal conveying pipe (1), and a heat-conducting fin plate (12) is fixedly installed on the other side of the pulverized coal conveying pipe (1).
3. A kiln head pulverized coal injection pipe burner according to claim 2, characterized in that: A pulverized coal fan (13) is fixedly installed on the left side of the pulverized coal conveying pipe (1), and an air supply pipe (14) is fixedly installed on one side of the bottom of the pulverized coal conveying pipe (1).
4. A kiln head pulverized coal injection pipe burner according to claim 3, characterized in that: The air supply duct (14) is L-shaped, and a temperature detector (15) is fixedly installed on one side of the outer side of the air supply duct (14).
5. A kiln head pulverized coal injection pipe burner according to claim 4, characterized in that: A heat-conducting fin (16) is fixedly installed on the other side of the air supply pipe (14), and a blower (17) is fixedly installed on the left side of the air supply pipe (14).
6. A kiln head pulverized coal injection pipe burner according to claim 1, characterized in that: The burner body (18) is fixedly installed on the right side of the pulverized coal conveying pipe (1).
7. A kiln head pulverized coal injection pipe burner according to claim 6, characterized in that: A heating device (19) is fixedly installed on the outside of the burner body (18).