Decomposing furnace with variable air inlet direction

Abstract

The utility model discloses a decomposing furnace with a variable air inlet direction, which relates to the technical field of decomposing furnaces and comprises a decomposing furnace main body, an air inlet pipe and a feeding connecting pipe, and the outer side of the top end of the decomposing furnace main body is connected with the air inlet pipe. When the decomposing furnace with the variable air inlet direction is used, the guide pipe transversely rotates or longitudinally rotates through the auxiliary mechanism, so that the air inlet direction of the decomposing furnace main body is changed, a worker is helped to adjust an air flow mode in the decomposing furnace, pulverized coal and materials are more sufficiently mixed and dispersed in the furnace, and the decomposing efficiency is improved. And dust and other particulate matters in the air are blocked through the filtering mechanism, so that the dust and other particulate matters are prevented from interfering with heat exchange in the decomposing furnace main body, the product quality is ensured, and when the decomposing furnace is used, the effect of conveniently filtering the air to ensure the product quality is achieved.

Description

Technical Field

[0001] This utility model relates to the field of decomposition furnace technology, specifically a decomposition furnace with variable air intake direction. Background Technology

[0002] A precalciner is a thermal device primarily used for simultaneous fuel combustion, heat exchange, and decomposition reactions. Inside the precalciner, raw meal powder is dispersed and suspended in a high-temperature gas stream. The heat generated by fuel combustion is rapidly transferred to the raw meal, promoting the decomposition of calcium carbonate. In cement production, the precalciner is the core equipment of precalciner technology. It not only improves the decomposition rate of raw meal but also reduces the heat load within the rotary kiln, contributing to increased overall production efficiency and reduced energy consumption of the kiln system. Furthermore, the precalciner can accommodate different types of fuels.

[0003] According to patent announcement CN116972639A, a decomposition furnace includes a furnace body and air ducts, coal supply connecting pipes, material supply connecting pipes, and rotary kiln connecting pipes connected to the furnace body. The coal supply connecting pipes, material supply connecting pipes, and rotary kiln connecting pipes all have identical structures. The coal supply connecting pipe includes a first connecting pipe, a second connecting pipe, and a third connecting pipe connected to the furnace body. The ends of the first and second connecting pipes that are close to each other are inclined, forming a conical notch between the first and second connecting pipes that is identical in structure to the third connecting pipe. The coal supply connecting pipe also includes a first locking mechanism for locking the third connecting pipe to the first connecting pipe and a second locking mechanism for locking the third connecting pipe to the second connecting pipe. This invention aims to reduce the precision requirements for the reserved dimensions of the pipelines.

[0004] However, the air ducts in the aforementioned patents are fixed, making it difficult to adjust the air intake direction. This results in the airflow pattern inside the decomposition furnace being difficult to adjust, leading to insufficient mixing and dispersion of pulverized coal and materials within the furnace. Consequently, this affects the combustion efficiency and heat exchange efficiency of the decomposition furnace, thus impacting its operation. Utility Model Content

[0005] The purpose of this invention is to provide a decomposition furnace with a variable air intake direction to solve the problems mentioned in the background art, which cannot meet people's usage needs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a decomposition furnace with variable air intake direction, comprising a decomposition furnace body, an air intake pipe, and a feeding connection pipe. The air intake pipe is connected to the outer side of the top of the decomposition furnace body, and a feeding connection pipe is connected to one side of the outer wall of the decomposition furnace body, while a coal supply connection pipe is connected to the other side of the outer wall of the decomposition furnace body. An outlet pipe is connected to the bottom of the decomposition furnace body, and an auxiliary mechanism is provided above the outlet pipe. The auxiliary mechanism includes a rubber sleeve, a guide tube, a protective box, an electric push rod, a lifting plate, a drive motor, a drive gear, a driven gear, a fixed column, and a transmission column. A rubber sleeve is connected to one side of the outer wall of the air intake pipe, and a guide tube is fixedly connected to the side of the rubber sleeve away from the air intake pipe. A protective box is welded to the top of the decomposition furnace body, and an electric push rod is installed at the top of the inner wall of the protective box.

[0007] Preferably, the output end of the electric push rod is connected to a lifting plate, and a drive motor is embedded in the middle of the lifting plate.

[0008] Preferably, the output end of the drive motor is connected to a drive gear, and the outer wall of the drive gear is meshed with a driven gear.

[0009] Preferably, a fixing column is welded to the top of the lifting plate, a guide hole corresponding to the fixing column is opened on the top of the protective box, and a transmission column is welded inside the driven gear.

[0010] Preferably, the bottom end of the transmission column is welded to the guide tube, and the top of the transmission column is connected to the lifting plate through a bearing seat. The driven gears are distributed at an angle to the outside of the driving gear.

[0011] Preferably, the outer wall of the air inlet pipe is provided with a filtration mechanism, and the filtration mechanism includes a support plate, a filter seat, an outlet, a filter screen, an extension plate, a fixing seat, a limiting seat and a fixing strip, and a support plate is welded to the middle of the outer wall of the decomposition furnace body.

[0012] Preferably, the top of the support plate is connected to a filter seat, and one side of the outer wall of the filter seat is connected to an outlet.

[0013] Preferably, a filter screen plate is slidably connected inside the filter base, and an extension plate is welded to the top of the filter screen plate.

[0014] Preferably, a fixing seat is welded to the middle of the top of the filter seat, and limiting seats are connected to both sides of the top of the filter seat.

[0015] Preferably, the fixing seat has a fixing strip slidably connected inside, and the filter seat and other components are distributed at an angle on the top of the support plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: When the variable air intake direction decomposition furnace is in use, the auxiliary mechanism allows the duct to rotate laterally or longitudinally, thereby changing the air intake direction of the decomposition furnace body. This helps the operator adjust the airflow pattern inside the decomposition furnace, allowing the pulverized coal and materials to be more fully mixed and dispersed in the furnace, thereby improving combustion efficiency and heat exchange efficiency. The filtration mechanism blocks dust and other particulate matter in the air, preventing dust and other particulate matter from interfering with the heat exchange inside the decomposition furnace body and ensuring product quality. Thus, when the decomposition furnace is in use, it plays a role in facilitating air filtration to ensure product quality. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of this utility model;

[0019] Figure 3 This is a three-dimensional sectional view of the protective box of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the active gear of this utility model, viewed from below.

[0021] Figure 5 This is a three-dimensional structural diagram of the auxiliary mechanism of this utility model;

[0022] Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the rubber sleeve of this utility model;

[0023] Figure 7 This is a three-dimensional structural diagram of the filtration mechanism of this utility model.

[0024] In the diagram: 1. Main body of the decomposition furnace; 2. Air inlet pipe; 3. Feeding connection pipe; 4. Coal supply connection pipe; 5. Outlet pipe; 6. Auxiliary mechanism; 601. Rubber sleeve; 602. Conduit; 603. Protective box; 604. Electric push rod; 605. Lifting plate; 606. Drive motor; 607. Drive gear; 608. Driven gear; 609. Fixed column; 610. Transmission column; 7. Filtering mechanism; 701. Support plate; 702. Filter seat; 703. Outlet; 704. Filter screen; 705. Extension plate; 706. Fixed seat; 707. Limiting seat; 708. Fixing strip. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-6 This utility model provides a technical solution: a decomposition furnace with variable air intake direction, including a decomposition furnace body 1, an air intake pipe 2, and a feeding connection pipe 3. The air intake pipe 2 is connected to the outer side of the top of the decomposition furnace body 1, and the feeding connection pipe 3 is connected to one side of the outer wall of the decomposition furnace body 1. The coal supply connection pipe 4 is connected to the other side of the outer wall of the decomposition furnace body 1. The bottom of the decomposition furnace body 1 is connected to an outlet pipe 5, and an auxiliary mechanism 6 is provided above the outlet pipe 5. The auxiliary mechanism 6 includes a rubber sleeve 601, a guide pipe 602, a protective box 603, an electric push rod 604, a lifting plate 605, a drive motor 606, a drive gear 607, a driven gear 608, a fixed column 609, and a transmission column 610. The rubber sleeve 601 is connected to one side of the outer wall of the air intake pipe 2, and the guide pipe 602 is fixedly connected to the side of the rubber sleeve 601 away from the air intake pipe 2. The protective box 603 is welded to the top of the decomposition furnace body 1, and an electric push rod is installed on the top of the inner wall of the protective box 603. 604; The output end of the electric push rod 604 is connected to the lifting plate 605, and the driving motor 606 is embedded in the middle of the lifting plate 605; The output end of the driving motor 606 is connected to the driving gear 607, and the driven gear 608 is meshed with the outer wall of the driving gear 607; A fixed column 609 is welded to the top of the lifting plate 605, and a guide hole corresponding to the fixed column 609 is opened on the top of the protective box 603. A transmission column 610 is welded inside the driven gear 608; The bottom end of the transmission column 610 is welded to the guide tube 602, and the top of the transmission column 610 is connected to the lifting plate 605 through a bearing seat. The driven gear 608 is distributed at equal angles on the outside of the driving gear 607; The fixed column 609 is distributed at equal angles on the lifting plate 605. The fixed column 609 and the protective box 603 are slidably connected, and the transmission column 610 and the decomposition furnace body 1 are slidably connected. The electric push rod 604 is symmetrically distributed about the vertical center line of the protective box 603.

[0027] In specific implementation, during the use of the decomposition furnace, in order to change the airflow pattern inside the main body 1 of the decomposition furnace, the drive motor 606 in the middle of the lifting plate 605 is first started. Since the output end of the drive motor 606 is connected to the drive gear 607, the start of the drive motor 606 will drive the drive gear 607 to rotate. Since the drive gear 607 and the driven gear 608 are meshed, the rotation of the drive gear 607 will drive the driven gear 608 to rotate. Then the rotation of the driven gear 608 will drive the transmission column 610 to rotate. Since the transmission column 610 is connected to the duct 602, the rotation of the transmission column 610 will cause the duct 602 to rotate laterally. Since the duct 602 is connected to the air inlet pipe 2 through the rubber sleeve 601, the lateral rotation of the duct 602 will cause the air inlet direction to change laterally.

[0028] Next, the electric push rod 604 on the top of the protective box 603 is activated. Since the output end of the electric push rod 604 is connected to the lifting plate 605, the extension of the electric push rod 604 will drive the lifting plate 605 to move downward. Since the top of the lifting plate 605 is welded to the fixed column 609, the fixed column 609 slides along the protective box 603, thereby guiding the movement of the lifting plate 605, so that the lifting plate 605 moves smoothly. Then, the lifting plate 605 moves downward, driving the transmission column 610 to move downward, which in turn generates a downward thrust on the duct 602, causing the duct 602 to rotate longitudinally, thereby causing the air intake direction to change longitudinally.

[0029] Furthermore, by rotating the duct 602 horizontally or vertically, the air intake direction of the decomposition furnace body 1 is changed, thereby helping the staff to adjust the airflow pattern inside the decomposition furnace. This allows the pulverized coal and materials to be more fully mixed and dispersed inside the furnace. By changing the air intake direction, the temperature field inside the decomposition furnace can be better controlled, avoiding excessively high local temperatures, thereby improving combustion efficiency and heat exchange efficiency. In addition, a reasonable air intake direction can reduce the scaling phenomenon on the inner wall of the decomposition furnace, keep the furnace clean, and reduce maintenance workload. Ultimately, when the decomposition furnace is in use, it plays a role in facilitating the adjustment of the air intake direction to improve combustion efficiency.

[0030] See Figure 1 , Figure 2 , Figure 6 and Figure 7It is known that a filter mechanism 7 is provided on the outer wall of the air inlet duct 2, and the filter mechanism 7 includes a support plate 701, a filter seat 702, an outlet 703, a filter screen 704, an extension plate 705, a fixing seat 706, a limiting seat 707, and a fixing strip 708. A support plate 701 is welded to the middle of the outer wall of the decomposition furnace body 1; a filter seat 702 is connected to the top of the support plate 701, and an outlet 703 is connected to one side of the outer wall of the filter seat 702; a filter is slidably connected inside the filter seat 702. The filter screen 704 has an extension plate 705 welded to its top; a fixed seat 706 is welded to the middle of the top of the filter seat 702, and limit seats 707 are connected to both sides of the top of the filter seat 702; a fixed strip 708 is slidably connected inside the fixed seat 706, and the filter seats 702 are distributed at equal angles on the top of the support plate 701; a limit groove corresponding to the fixed strip 708 is opened inside the fixed seat 706, the filter screens 704 are parallel to each other, and the fixed strip 708 is "L" shaped.

[0031] In practice, during the use of the decomposition furnace, in order to improve product quality, the filter seat 702 is placed on the support plate 701 in advance, so that the outlet 703 is connected to the air inlet pipe 2. Then, when the air inlet pipe 2 introduces the outside into the decomposition furnace body 1, the outside air will first pass through the filter screen plate 704, and then the air will be filtered by the filter screen plate 704, so that dust and other particles in the air are blocked, thereby preventing dust and other particles from interfering with the heat exchange inside the decomposition furnace body 1 and ensuring product quality.

[0032] When the filter screen 704 becomes clogged and needs cleaning due to prolonged use, first move the fixing strip 708 inside the limiting seat 707, causing the fixing strip 708 to move away from the fixing seat 706 until the fixing strip 708 is disengaged from the extension plate 705. This releases the limiting effect on the filter screen 704. Then, remove the filter screen 704 from the filter base 702 for cleaning. This will resolve the clogging of the filter screen 704 without repeatedly turning multiple sets of bolts, allowing for easy disassembly, cleaning, or replacement of the filter screen 704. This saves time and facilitates subsequent installation, thus ensuring product quality during use in the decomposition furnace by effectively filtering air.

[0033] In summary, when using this variable air intake direction decomposition furnace, the raw materials are first introduced into the decomposition furnace body 1 through the feeding connection pipe 3, and the coal is introduced into the decomposition furnace body 1 through the coal feeding connection pipe 4. Then, air is introduced into the decomposition furnace body 1 through the air intake pipe 2. The decomposition furnace body 1 is then started to exchange heat, thereby converting limestone into calcium oxide. Afterward, the limestone is discharged from the decomposition furnace body 1 through the outlet pipe 5. This is existing technology and will not be elaborated on here. The auxiliary mechanism 6 causes the duct 602 to change the air intake direction of the decomposition furnace body 1, thereby helping the operator to adjust the airflow pattern inside the decomposition furnace. This allows the coal powder and materials to be more fully mixed and dispersed in the furnace. Furthermore, by changing the air intake direction, the temperature field inside the decomposition furnace can be better controlled, avoiding the problem of local high temperature or uneven temperature inside the decomposition furnace, thereby improving combustion efficiency and heat exchange efficiency. The filter mechanism 7 blocks dust and other particulate matter in the air, thereby preventing dust and other particulate matter from interfering with the heat exchange inside the decomposition furnace body 1 and ensuring product quality. The contents not described in detail in this description are existing technologies known to those skilled in the art.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A variable air inlet direction decomposition furnace, comprising a decomposition furnace body (1), an air inlet pipe (2) and a feeding connection pipe (3), characterized in that: The outer side of the top end of the decomposition furnace body (1) is connected with the air inlet pipe (2), one side of the outer wall of the decomposition furnace body (1) is butt jointed with the feeding connection pipe (3), the other side of the outer wall of the decomposition furnace body (1) is butt jointed with the coal supply connection pipe (4), the bottom end of the decomposition furnace body (1) is connected with the guide pipe (5), the upper side of the guide pipe (5) is provided with the auxiliary mechanism (6), and the auxiliary mechanism (6) comprises a rubber sleeve (601), a guide pipe (602), a protective box (603), an electric push rod (604), a lifting plate (605), a driving motor (606), a driving gear (607), a driven gear (608), a fixed column (609) and a transmission column (610), one side of the outer wall of the air inlet pipe (2) is connected with the rubber sleeve (601), the side away from the air inlet pipe (2) of the rubber sleeve (601) is fixedly connected with the guide pipe (602), the top of the decomposition furnace body (1) is welded with the protective box (603), and the inner wall of the protective box (603) is mounted with the electric push rod (604).

2. A variable air inlet direction furnace according to claim 1, wherein: The output end of the electric push rod (604) is butt jointed with the lifting plate (605), and the middle part of the lifting plate (605) is embeddedly mounted with the driving motor (606).

3. A variable air inlet direction furnace according to claim 2, wherein: The output end of the driving motor (606) is butt jointed with the driving gear (607), and the outer wall of the driving gear (607) is meshingly connected with the driven gear (608).

4. A variable air inlet direction furnace according to claim 3, wherein: The top end of the lifting plate (605) is welded with the fixed column (609), the top of the protective box (603) is provided with a guide hole corresponding to the fixed column (609), and the inside of the driven gear (608) is welded with the transmission column (610).

5. A variable air inlet direction furnace according to claim 4, wherein: The bottom end of the transmission column (610) is welded with the guide pipe (602), and the top of the transmission column (610) is connected with the lifting plate (605) through a bearing seat, and the driven gear (608) is distributed at the outer side of the driving gear (607) at an angle.

6. A variable air inlet direction furnace according to claim 1, wherein: The outer wall of the air inlet pipe (2) is provided with a filtering mechanism (7), and the filtering mechanism (7) comprises a supporting plate (701), a filtering seat (702), a guide outlet (703), a filtering mesh plate (704), an extension plate (705), a fixed seat (706), a limiting seat (707) and a fixed strip (708), and the middle part of the outer wall of the decomposition furnace body (1) is welded with the supporting plate (701).

7. A variable air inlet direction furnace according to claim 6, characterised in that: The top end of the supporting plate (701) is connected with the filtering seat (702), and one side of the outer wall of the filtering seat (702) is butt jointed with the guide outlet (703).

8. A variable air inlet direction furnace according to claim 7, wherein: The inside of the filtering seat (702) is slidably connected with the filtering mesh plate (704), and the top of the filtering mesh plate (704) is welded with the extension plate (705).

9. A variable air inlet direction furnace according to claim 8, characterised in that: The middle part of the top end of the filtering seat (702) is welded with the fixed seat (706), and the top end of the filtering seat (702) is connected with the limiting seat (707) on both sides.

10. A variable air inlet direction furnace according to claim 9, wherein: The inside of the fixed seat (706) is slidably connected with the fixed strip (708), and the filtering seat (702) is distributed at the top of the supporting plate (701) at an angle.

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