Steel pipe bright annealing furnace with furnace mouth flame direction adjusting device
By introducing the furnace entrance flame adjustment device into the bright annealing furnace and adjusting the flame direction by using the airflow, the problem of external air entering the furnace entrance is solved, and the steel pipe is uniformly heated and production efficiency is improved.
Patent Information
- Application Number
- CN202422522836.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-18
AI Technical Summary
It is difficult for existing bright annealing furnaces to effectively control the entry of external air at the furnace opening, resulting in oxidation of stainless steel products and affecting product quality and production efficiency.
The flame direction adjustment device with the furnace port is adopted, and the flame direction is adjusted through the telescopic cylinder and tooth plate mechanism using the principle of air flow to prevent the flame from rushing out of the feed port, ensure the smooth air flow and maintain the pressure balance in the furnace.
The heating uniformity of steel pipes is achieved, product quality and production efficiency are improved, flames are prevented from rushing out, and the purity of the atmosphere in the furnace is protected.
Smart Images
Figure CN223226126U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of annealing furnaces, in particular to a steel tube bright annealing furnace with a furnace mouth flame direction adjustment device. Background Art
[0002] Bright annealing of steel pipes is a key process in the steel pipe manufacturing industry. It aims to improve the surface quality and inherent performance of steel pipes by precisely controlling the heating and cooling processes. Bright annealing requires heating stainless steel products in a furnace. Since the alloying elements in stainless steel are highly susceptible to oxidation, achieving a bright surface requires treatment in extremely pure nitrogen or ammonia decomposition gas. Furthermore, the gas must be protected from contamination at high temperatures within the furnace. This requires that the inlet and outlet of the bright annealing furnace be blocked to control the ingress of outside air.
[0003] Some bright annealing furnaces use hydrogen combustion at the furnace mouth and seal the furnace mouth with flames. Due to the high temperature inside the furnace, the external air pressure tends to be higher than the internal pressure of the furnace. Therefore, in order to prevent external air from entering the furnace, the direction of the furnace mouth flame needs to be adjusted. In order to overcome these problems and improve the production efficiency and product quality of steel pipe annealing, a steel pipe bright annealing furnace with a furnace mouth adjustment device has been developed. Utility Model Content
[0004] The utility model aims to provide a steel pipe bright annealing furnace with a furnace mouth flame direction adjustment device, which uses the airflow principle to change the direction of the furnace fire so that the steel pipe is heated evenly, thereby improving product production quality.
[0005] To achieve the above-mentioned object, the utility model provides the following technical solution: a steel pipe bright annealing furnace with a furnace mouth flame direction adjustment device, comprising a base, an annealing assembly is arranged on the base, the annealing assembly includes an annealing furnace, a flame head is arranged on the annealing furnace, the base includes an adjustment mechanism, the adjustment mechanism is provided with a power bracket, a blower is installed on the power bracket, the air outlet end of the blower is provided with a retractable telescopic cylinder, one end of the telescopic cylinder is located on one side of the feed inlet of the annealing furnace, a lifting support is slidably provided on the power bracket, one end of the lifting support is connected to the telescopic cylinder, a first gear plate is installed on one side of the telescopic cylinder, a second gear plate is installed on one side of the first gear plate, a gear is arranged between the first gear plate and the second gear plate, and the first gear plate and the second gear plate are both engaged with the gear, a feed door is connected on one side of the second gear plate, and the feed door slides on the feed inlet of the annealing furnace, an auxiliary furnace is installed on the base, the auxiliary furnace includes a discharge furnace, and a chimney is provided on the discharge furnace.
[0006] Optionally, a pipe connected to the annealing furnace is provided at the rear of the discharge furnace, and a discharge furnace door is installed at the discharge port.
[0007] Optionally, the flame heads are arranged on both sides of the annealing furnace.
[0008] Optionally, the lifting pillar is fixedly connected to the telescopic cylinder. When the lifting pillar moves upward, the first tooth plate moves upward along with the lifting pillar. When the first tooth plate moves upward, it drives the gear to rotate, and when the gear rotates, it drives the second tooth plate to move downward.
[0009] Optionally, one end of the telescopic cylinder is connected to a blower, and the blower is located on one side of the annealing furnace feed port. The first tooth plate and the second tooth plate are both provided with gear teeth, and the first tooth plate and the second tooth plate are both engaged with the gear through the gear teeth.
[0010] Optionally, a slide rail for sliding with the second tooth plate and the first tooth plate is provided on one side of the annealing furnace, and one side of the second tooth plate is connected to the feed door through a connecting rod.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] While the telescopic cylinder drives the blower to adjust the fire direction, the lifting pillar drives the first tooth plate to move upward, the first tooth plate drives the gear to rotate, and the gear rotation drives the second tooth plate to move downward, and the second tooth plate simultaneously drives the feed door to move downward, and then when the blower moves upward to blow to the top of the flame, the feed door moves downward, which can prevent the flame from being blown out from the lower part of the feed port of the annealing furnace; conversely, when the blower moves downward to adjust the fire direction, the feed door moves upward to prevent the flame from being blown out from the upper part of the feed port of the annealing furnace; in addition, the airflow principle is used to change the direction of the furnace fire, so that the steel pipe is heated evenly, thereby improving product production quality.
[0013] The flame heads are arranged on both sides of the annealing furnace. The annealing furnace and the discharge furnace are connected by pipes and are on the same axis. Due to the action of the blower, the air circulation inside the annealing furnace will be accelerated. Therefore, when the annealing furnace is burning, the internal pressure will be lower than the pressure inside the discharge furnace. Therefore, the fire will be discharged along the chimney, thereby controlling the fire direction and preventing the flame from spreading out. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 This is the second partial structural diagram of the utility model;
[0016] Figure 3 This is the second overall structural diagram of the utility model;
[0017] Figure 4 This is the third partial structural diagram of the present utility model;
[0018] Figure 5 This is a schematic diagram of the auxiliary furnace structure of the utility model;
[0019] Figure 6 It is a partial structural diagram of the adjustment mechanism of the utility model.
[0020] In the figure: 1. Base; 2. Annealing assembly; 21. Annealing furnace; 22. Flame head; 3. Adjustment mechanism; 31. Power bracket; 32. Lifting support; 33. Telescopic cylinder; 34. Feed door; 35. Second gear plate; 36. Gear; 37. Blower; 38. First gear plate; 4. Auxiliary furnace; 41. Discharge furnace; 42. Discharge furnace door; 43. Conveyor belt; 44. Pipeline; 45. Chimney. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] The utility model provides a steel pipe bright annealing furnace with a furnace mouth flame direction adjustment device, comprising a base 1, an annealing assembly 2 is arranged on the base 1, the annealing assembly 2 includes an annealing furnace 21, a flame head 22 is arranged on the annealing furnace 21, the base 1 includes an adjustment mechanism 3, the adjustment mechanism 3 is provided with a power bracket 31, a blower is installed on the power bracket 31, and a retractable telescopic cylinder 33 is provided at the air outlet end of the blower, one end of the telescopic cylinder 33 is located at one side of the feed port of the annealing furnace 21, a lifting support 32 is slidably provided on the power bracket 31, and the lifting support 32 is provided. One end of the support 32 is connected to the telescopic cylinder 33. A first tooth plate 38 is installed on one side of the telescopic cylinder 33. A second tooth plate 35 is installed on one side of the first tooth plate 38. A gear 36 is provided between the first tooth plate 38 and the second tooth plate 35. Both the first tooth plate 38 and the second tooth plate 35 are engaged with the gear 36. A feed door 34 is connected to one side of the second tooth plate 35. The feed door 34 slides on the feed port of the annealing furnace 21. An auxiliary furnace 4 is installed on the base 1. The auxiliary furnace 4 includes a discharge furnace 41. A chimney 45 is provided on the discharge furnace 41.
[0023] See also Figures 1 to 6When the fire direction needs to be adjusted, the lifting support 32 can be pulled to move. The lifting support 32 moves upward to drive the blower 37 to move upward. Since the blower 37 is located on one side of the feed port of the annealing furnace 21, when the feed port of the annealing furnace 21 is opened, the wind direction can change the flame to the inside of the annealing furnace 21, avoiding it from running out of the feed port of the annealing furnace 21. In addition, when the telescopic cylinder 33 drives the blower 37 to adjust the fire direction, the lifting support 32 drives the first tooth plate 38 to move upward. 38 drives the gear 36 to rotate, and the rotation of the gear 36 drives the second gear plate 35 to move downward, and the second gear plate 35 simultaneously drives the feed gate 34 to move downward, and then when the blower 37 moves upward to blow toward the top of the flame, the feed gate 34 moves downward, which can prevent the flame from being blown out from the lower part of the feed port of the annealing furnace 21; conversely, when the blower 37 moves downward to adjust the fire direction, the feed gate 34 moves upward, which can prevent the flame from being blown out from the upper part of the feed port of the annealing furnace 21.
[0024] A pipe 44 connected to the annealing furnace 21 is provided at the rear of the discharge furnace 41, a discharge furnace door 42 is installed at the discharge port of the discharge furnace 41, a conveyor belt 43 is arranged in the pipe 44, and the flame heads 22 are arranged on both sides of the annealing furnace 21. The annealing furnace 21 and the discharge furnace 41 are connected through the pipe 44 and are on the same axis; due to the action of the blower 37, the air circulation inside the annealing furnace 21 will be accelerated. Therefore, when the annealing furnace 21 is burning, the internal pressure will be lower than the pressure inside the discharge furnace 41. Therefore, the fire will be discharged along the chimney 45, thereby achieving the purpose of controlling the fire direction and preventing the flame from spreading out.
[0025] The lifting pillar 32 is fixedly connected to the telescopic cylinder 33, and gear teeth are provided on the first gear plate 38 and the second gear plate 35. The first gear plate 38 and the second gear plate 35 are meshed with the gear 36 through the gear teeth. A slide rail for sliding with the second gear plate 35 and the first gear plate 38 is provided on one side of the annealing furnace 21. The first gear plate 38 moves upward with the lifting pillar 32. When the first gear plate 38 moves upward, the gear 36 is driven to rotate, so that when the gear 36 rotates, the second gear plate 35 is driven to move downward. One side of the second gear plate 35 is connected to the feed door 34 through a connecting rod. When the second gear plate 35 moves, the connecting rod drives the feed door 34 to move downward as well. One end of the telescopic cylinder 33 is connected to a blower 37. The blower 37 is located on the side of the feed port of the annealing furnace 21, and the blower 37 slides up and down with the lifting pillar 32; then, when the blower 37 moves upward and blows toward the top of the flame, the feed door 34 moves downward, thereby preventing the flame from escaping from the bottom of the feed port.
[0026] Working principle: When the feed port of the annealing furnace 21 is opened for loading or unloading, in order to prevent the flame from escaping from the feed port, the blower is started at this time, and the air outlet of the blower blows air into the interior of the telescopic cylinder 33, and then the air is discharged by the blower 37. Since the blower 37 is located on one side of the feed port of the annealing furnace 21, when the feed port of the annealing furnace 21 is opened, the wind direction can change the flame toward the interior of the annealing furnace 21, thereby preventing the flame from escaping from the feed port of the annealing furnace 21.
[0027] In addition, when the flame at the feed port needs to be adjusted, the lifting support 32 is pulled downward, and the lifting support 32 drives the telescopic cylinder 33 to move downward, and the telescopic cylinder 33 drives the blower 37 to move downward, and the blower 37 moves to the lower position of the feed port of the annealing furnace 21, and the wind blows to the bottom of the flame; similarly, the lifting support 32 is pushed upward to move, and the lifting support 32 drives the blower 37 to move upward, so that the wind blows to the top of the flame, thereby adjusting the direction of the flame and preventing the flame from spreading out according to actual conditions; in addition, a chimney 45 is provided on the discharge furnace 41 to prevent excessive pressure changes in the annealing furnace 21 during blowing, thereby exacerbating the flame from spreading out.
[0028] When the blowing cylinder 37 moves upward to adjust the fire direction, the lifting support 32 drives the first tooth plate 38 to slide upward, and the first tooth plate 38 drives the gear 36 to rotate. The rotation of the gear 36 drives the second tooth plate 35 to move downward, and the second tooth plate 35 drives the feed door 34 to move downward through the connecting rod. In addition, the lifting support 32 also drives the telescopic cylinder 33 upward. The telescopic cylinder 33 drives the blowing cylinder 37 upward. Then, when the blowing cylinder 37 moves upward to blow toward the top of the flame, the feed door 34 moves downward to prevent the flame from escaping from the lower part of the feed port of the annealing furnace 21 when being blown; conversely, when the blowing cylinder 37 moves downward to adjust the fire direction, the feed door 34 moves upward to prevent the flame from escaping from the upper part of the feed port of the annealing furnace 21 when being blown.
[0029] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A steel tube bright annealing furnace with a furnace mouth flame direction adjustment device, comprising a base (1), characterized in that: An annealing assembly (2) is provided on the base (1), the annealing assembly (2) includes an annealing furnace (21), a flame head (22) is provided on the annealing furnace (21), the base (1) includes an adjustment mechanism (3), the adjustment mechanism (3) is provided with a power bracket (31), a blower is installed on the power bracket (31), a retractable telescopic cylinder (33) is provided at the air outlet end of the blower, one end of the telescopic cylinder (33) is located on the feed port side of the annealing furnace (21), a lifting support (32) is slidably provided on the power bracket (31), one end of the lifting support (32) is connected to the telescopic cylinder (33), and the telescopic cylinder (33) is provided on the power bracket (31). A first tooth plate (38) is installed on one side of the shrink tube (33), and a second tooth plate (35) is installed on one side of the first tooth plate (38). A gear (36) is provided between the first tooth plate (38) and the second tooth plate (35), and both the first tooth plate (38) and the second tooth plate (35) are engaged with the gear (36). A feed gate (34) is connected to one side of the second tooth plate (35), and the feed gate (34) slides on the feed port of the annealing furnace (21). An auxiliary furnace (4) is installed on the base (1), and the auxiliary furnace (4) includes a discharge furnace (41). A chimney (45) is provided on the discharge furnace (41).
2. A steel tube bright annealing furnace with a furnace mouth flame direction adjustment device according to claim 1, characterized in that: A pipe (44) connected to the annealing furnace (21) is provided at the rear of the discharge furnace (41), and a discharge furnace door (42) is installed at the discharge port of the discharge furnace (41).
3. A steel tube bright annealing furnace with a furnace mouth flame direction adjustment device according to claim 1, characterized in that: The flame spray heads (22) are arranged on both sides of the annealing furnace (21).
4. A steel tube bright annealing furnace with a furnace mouth flame direction adjustment device according to claim 1, characterized in that: The lifting support (32) is fixedly connected to the telescopic cylinder (33). When the lifting support (32) moves upward, the first tooth plate (38) moves upward following the lifting support (32). When the first tooth plate (38) moves upward, the gear (36) is driven to rotate, so that when the gear (36) rotates, the second tooth plate (35) is driven to move downward.
5. A steel tube bright annealing furnace with a furnace mouth flame direction adjustment device according to claim 4, characterized in that: One end of the telescopic cylinder (33) is connected to a blower cylinder (37), and the blower cylinder (37) is located on one side of the feed port of the annealing furnace (21). The first tooth plate (38) and the second tooth plate (35) are both provided with gear teeth, and the first tooth plate (38) and the second tooth plate (35) are both engaged with the gear (36) through the gear teeth.
6. A steel tube bright annealing furnace with a furnace mouth flame direction adjustment device according to claim 1, characterized in that: One side of the annealing furnace (21) is provided with a slide rail for sliding with the second tooth plate (35) and the first tooth plate (38), and one side of the second tooth plate (35) is connected to the feed door (34) via a connecting rod.
7. A steel tube bright annealing furnace with a furnace mouth flame direction adjustment device according to claim 2, characterized in that: A conveyor belt (43) is arranged in the pipeline (44).
8. The steel tube bright annealing furnace with a furnace mouth flame direction adjustment device according to claim 1, characterized in that: The annealing furnace (21) and the discharge furnace (41) are connected via a pipe (44) and are on the same axis.