Hot air baffle door shaft sealing device
By setting up bearing seat bracket and packing fill on the door shaft of the hot air baffle, combined with the rear bearing and short bearing design, the sealing and clamping problems of the hot primary air adjustment door are solved, and flexible adjustment and stable operation in high temperature environments are achieved, and the component life is extended.
Patent Information
- Application Number
- CN202422153313.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-08
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The active hot primary air regulating door is deformed due to its large material deformation, which causes the adjustment door to be stuck and sealed leaks, affecting the safe operation of the boiler.
It adopts a seal structure filled with bearing seat bracket and pack, combined with the design of rear bearing and short bearing, and is equipped with oil injection holes to ensure sealing effect and operating stability.
Under the harsh working conditions of high temperature hot air and ash, no leakage is achieved, avoiding jamming, ensuring the safe and flexible operation of the boiler, and extending the life of the components.
Smart Images
Figure CN223076258U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of door shaft seals, in particular to a hot air baffle door shaft seal device. Background Art
[0002] The door body and door frame of the primary hot air regulating door in service in our factory are made of Q235. This material has a large deformation amount in the hot state, often resulting in defects such as abnormal jamming of the regulating door, difficult adjustment, and external leakage of the shaft seal. The blade adopts a whole valve plate, and the shaft seal of the door body is a packing seal with serious external leakage.
[0003] The regulating door often gets jammed during the start and stop of the mill, causing difficulties in operation and affecting the safe operation of the unit's peak shaving. Therefore, in order to meet the requirements of safe, reliable and economic operation, it is necessary to modify the regulating door to ensure flexible adjustment without jamming under the harsh working conditions of high-temperature hot air and ash, so as to achieve the purpose of ensuring the safe combustion of the boiler. Content of the Utility Model
[0004] To solve the above technical problems, the utility model provides a hot air baffle door shaft seal device.
[0005] The utility model is realized by the following technical solutions: A hot air baffle door shaft seal device includes a mounting frame. The left end of the mounting frame is fixedly connected with a motor bracket. The left end of the motor bracket is fixedly connected with a motor. The output end of the motor is fixedly connected with a transmission shaft. The right end of the transmission shaft is fixedly connected with a door shaft. A bearing is installed on the inner wall of the mounting frame. A bearing seat bracket is installed on the inner wall of the mounting frame. Packing is arranged at both ends of the bearing. The right end of the door shaft is fixedly connected with a short bearing. The surface of the short bearing is rotatably connected with a rear bearing.
[0006] Through the above technical solutions, the material of the bearing seat bracket is not lower than Q355B. By filling the packing between the bearing seat bracket and the bearing, the sealing effect is improved, ensuring no air leakage and ash leakage during use. At the same time, it prevents dust from entering the interior of the bearing, thus avoiding the occurrence of jamming and making the door shaft run more flexibly.
[0007] As a further improvement of the above solution, the surface of the transmission shaft is rotatably connected with the inner wall of the motor bracket, and the surface of the door shaft is rotatably connected with the inner wall of the bearing.
[0008] Through the above technical solutions, the motor drives the transmission shaft to rotate, causing the door shaft to rotate, thereby driving the sealing baffle to rotate to achieve opening and closing.
[0009] As a further improvement of the above solution, one end of the bearing seat bracket is in contact with the surface of the packing, and the bearing seat bracket is located at both ends of the bearing.
[0010] Through the above technical solution, the packing is extruded by the bearing seat bracket, ensuring the sealing effect and effectively preventing external dust from entering the interior of the bearing.
[0011] As a further improvement of the above solution, the rear bearing is located outside the mounting frame. A mounting bracket is fixedly connected to the right end of the rear bearing, and the left end of the mounting bracket is fixedly connected to the right end of the mounting frame.
[0012] Through the above technical solution, by arranging a rear bearing and a short bearing outside the mounting frame, the fixing rod runs more flexibly, ensuring the stability during operation.
[0013] As a further improvement of the above solution, oil injection holes are formed in the inner wall of the rear bearing, and the number of the oil injection holes is multiple.
[0014] Through the above technical solution, through the oil injection holes formed in the rear bearing, it is convenient to add lubricating oil into the interior of the rear bearing, reducing friction, extending the service life of the fixing rod, the rear bearing and the short bearing, avoiding the phenomenon of jamming during operation, and the multiple oil injection holes improve the efficiency of oil injection.
[0015] As a further improvement of the above solution, a fixing seat is fixedly connected to the surface of the door shaft. One end of the fixing seat is fixedly connected to a sealing baffle, and a limiting plate is fixedly connected to the inner wall of the mounting frame.
[0016] Through the above technical solution, the sealing baffle can be driven to rotate when the door shaft rotates through the fixing seat.
[0017] As a further improvement of the above solution, the number of the limiting plates is two, and the mutually approaching ends of the two limiting plates are in contact with both ends of the sealing baffle.
[0018] Through the above technical solution, the position of the sealing baffle is limited by the limiting plate, improving the sealing effect after the sealing baffle is closed.
[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0020] By arranging bearings, bearing seat brackets and packing, specifically by filling packing in the gap between the bearings and the bearing seat brackets, the present utility model improves the sealing effect during use, ensures no air leakage and dust leakage during use, and at the same time prevents dust from entering the interior of the bearings, ensuring flexible adjustment without jamming under the harsh working conditions of high-temperature hot air and ash, so as to achieve the purpose of ensuring the safe combustion of the boiler, thereby improving the practicability during use.
[0021] The utility model makes the fixed rod operate more flexibly and ensures the stability during operation by arranging a rear bearing and a short bearing, specifically by arranging the rear bearing and the short bearing outside the installation frame. Through the oil injection hole opened in the rear bearing, it is convenient to add lubricating oil into the interior of the rear bearing, reduce friction, extend the service life of the fixed rod, the rear bearing and the short bearing, and avoid the phenomenon of jamming during operation. Brief Description of the Drawings
[0022] Figure 1 is a schematic diagram of the overall structure of the utility model;
[0023] Figure 2 is a schematic diagram of the overall sectional structure of the utility model;
[0024] Figure 3 is of the utility model Figure 2 is a schematic diagram of the enlarged structure of part A in;
[0025] Figure 4 is a schematic diagram of the overall side view structure of the utility model;
[0026] Figure 5 is a schematic diagram of the overall side view structure of the utility model.
[0027] Main Symbol Description:
[0028] 1. Installation frame; 2. Motor frame; 3. Motor; 4. Transmission shaft; 5. Door shaft; 6. Bearing; 7. Bearing seat bracket; 8. Packing; 9. Rear bearing; 10. Short bearing; 11. Oil injection hole; 12. Installation bracket; 13. Fixed seat; 14. Sealing baffle; 15. Limiting plate. Detailed Embodiment
[0029] Next, in combination with the drawings and specific embodiments, the utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.
[0030] Embodiment:
[0031] Please combine Figures 1-5, A hot air baffle door shaft sealing device of this embodiment includes an installation frame 1. A motor bracket 2 is fixedly connected to the left end of the installation frame 1. A motor 3 is fixedly connected to the left end of the motor bracket 2. The output end of the motor 3 is fixedly connected to a transmission shaft 4. The right end of the transmission shaft 4 is fixedly connected to a door shaft 5. A bearing 6 is installed on the inner wall of the installation frame 1. A bearing seat bracket 7 is installed on the inner wall of the installation frame 1. Packing 8 is arranged at both ends of the bearing 6. The right end of the door shaft 5 is fixedly connected to a short bearing 10. A rear bearing 9 is rotatably connected to the surface of the short bearing 10. By filling packing 8 in the gap between the bearing 6 and the bearing seat bracket 7, the sealing effect during use is improved, ensuring no air leakage and ash leakage during use. At the same time, it prevents dust from entering the inside of the bearing 6, ensuring flexible adjustment without jamming under the harsh working conditions of high-temperature hot air and ash, so as to achieve the purpose of ensuring the safe combustion of the boiler, thereby improving the practicality during use.
[0032] The surface of the transmission shaft 4 is rotatably connected to the inner wall of the motor bracket 2. The surface of the door shaft 5 is rotatably connected to the inner wall of the bearing 6.
[0033] One end of the bearing seat bracket 7 contacts the surface of the packing 8. The bearing seat bracket 7 is located at both ends of the bearing 6.
[0034] The rear bearing 9 is located outside the installation frame 1. The right end of the rear bearing 9 is fixedly connected to an installation bracket 12. The left end of the installation bracket 12 is fixedly connected to the right end of the installation frame 1. By arranging the rear bearing 9 and the short bearing 10 outside the installation frame 1, the operation of the fixed rod 5 is more flexible, ensuring the stability during operation.
[0035] An oil injection hole 11 is opened on the inner wall of the rear bearing 9. The number of the oil injection holes 11 is set to be multiple. Through the oil injection holes 11 opened on the rear bearing 9, it is convenient to add lubricating oil into the inside of the rear bearing 9, reducing friction, prolonging the service life of the fixed rod 5, the rear bearing 9 and the short bearing 10, and avoiding the phenomenon of jamming during operation.
[0036] A fixed seat 13 is fixedly connected to the surface of the door shaft 5. A sealing baffle 14 is fixedly connected to one end of the fixed seat 13. A limiting plate 15 is fixedly connected to the inner wall of the installation frame 1.
[0037] The number of the limiting plates 15 is set to be two. The mutually approaching ends of the two limiting plates 15 contact both ends of the sealing baffle 14.
[0038] In the embodiment of the present application, the implementation principle of a hot air baffle door shaft sealing device is as follows: By filling packing 8 at the gap between bearing 6 and bearing seat bracket 7, the sealing effect during use is improved, ensuring no air leakage and ash leakage during use. At the same time, dust entering the interior of bearing 6 is avoided, ensuring flexible adjustment without jamming under the harsh working conditions of high-temperature hot air and ash, so as to achieve the purpose of ensuring the safe combustion of the boiler, thereby improving the practicality during use. By setting rear bearing 9 and short bearing 10 outside mounting frame 1, the operation of fixed rod 5 becomes more flexible, ensuring the stability during operation. Through oil injection hole 11 opened in rear bearing 9, it is convenient to add lubricating oil into the interior of rear bearing 9, reducing friction and extending the service life of fixed rod 5, rear bearing 9 and short bearing 10, and avoiding the phenomenon of jamming during operation.
[0039] The above-mentioned implementation manner is only the preferred implementation manner of the present invention, and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.
Claims
1. A hot air damper door shaft sealing device, characterized in that, It includes an installation frame (1). A motor bracket (2) is fixedly connected to the left end of the installation frame (1). A motor (3) is fixedly connected to the left end of the motor bracket (2). The output end of the motor (3) is fixedly connected to a transmission shaft (4). The right end of the transmission shaft (4) is fixedly connected to a door shaft (5). A bearing (6) is installed on the inner wall of the installation frame (1). A bearing seat bracket (7) is installed on the inner wall of the installation frame (1). Packing (8) is arranged at both ends of the bearing (6). A short bearing (10) is fixedly connected to the right end of the door shaft (5). A rear bearing (9) is rotatably connected to the surface of the short bearing (10).
2. The hot air damper door shaft sealing device according to claim 1, characterized in that: The surface of the transmission shaft (4) is rotatably connected to the inner wall of the motor bracket (2). The surface of the door shaft (5) is rotatably connected to the inner wall of the bearing (6).
3. The hot air baffle door shaft sealing device according to claim 1, characterized in that: One end of the bearing seat bracket (7) contacts the surface of the packing (8). The bearing seat bracket (7) is located at both ends of the bearing (6).
4. The hot air baffle door shaft sealing device according to claim 1, characterized in that: The rear bearing (9) is located outside the installation frame (1). An installation bracket (12) is fixedly connected to the right end of the rear bearing (9). The left end of the installation bracket (12) is fixedly connected to the right end of the installation frame (1).
5. The hot air baffle door shaft sealing device according to claim 4, characterized in that: An oil injection hole (11) is formed in the inner wall of the rear bearing (9). The number of the oil injection holes (11) is set to be multiple.
6. The hot air baffle door shaft sealing device according to claim 2, characterized in that: A fixed seat (13) is fixedly connected to the surface of the door shaft (5). A sealing baffle (14) is fixedly connected to one end of the fixed seat (13). A limiting plate (15) is fixedly connected to the inner wall of the installation frame (1).
7. The hot air baffle door shaft sealing device according to claim 6, characterized in that: The number of the limiting plates (15) is set to be two. The two ends of the limiting plates (15) that are close to each other contact both ends of the sealing baffle (14).