Anti-blocking and resistance reducing structure of a decomposition furnace and a cyclone

Abstract

The utility model relates to cement production technical field, and disclose a kind of anti-blocking resistance reduction structure of decomposing furnace and cyclone, including decomposing furnace outlet, decomposing furnace outlet and both sides five-stage cyclone are all communicated by connecting pipeline, and the bottom of connecting pipeline is equipped with first slope left and right symmetrical, and the top of two first slopes is rotatably connected by first hinge seat;The bottom of first slope is rotatably connected with second slope respectively by second hinge seat, and the bottom of both sides second slope is connected with the cyclone side wall of corresponding side five-stage cyclone respectively, and the bottom of two first slopes is equipped with lifting assembly for driving first slope, second slope adjustment inclination angle.The utility model eliminates the accumulated material dead angle of connecting pipeline and five-stage cyclone junction;Meanwhile, according to the flow of gas-solid mixture, particle size and other working conditions, dynamic adjustment slope inclination angle, optimize material flow trajectory, avoid material accumulation in pipeline bottom and form blockage.

Description

Technical Field

[0001] This utility model relates to the field of cement production technology, and in particular to an anti-clogging and drag-reducing structure for a decomposition furnace and a cyclone separator. Background Technology

[0002] In the new dry-process clinker calcination system for cement production, the decomposition furnace and the five-stage cyclone separator are the core equipment of the preheating and pre-decomposition system. The structural design of their connection points directly affects the transmission efficiency of the gas-solid mixture, the stability of system operation, and the energy consumption level. The gas-solid mixture is usually guided and transmitted between the decomposition furnace outlet and the five-stage cyclone separator through a connecting pipe. To guide the material flow and reduce direct impact, the existing technology generally adopts a "double-sloped connection" pipe bottom structure design.

[0003] However, the existing double-slope structure of the connecting pipes has many technical defects, which seriously restrict the efficient operation of the system: First, the slope angle is fixed and cannot adapt to the changing needs of material flow and particle size under different production conditions. This causes material to accumulate in dead corners at the slope connection and the bottom of the pipe, which easily leads to pipe blockage and requires frequent shutdowns for cleaning, significantly increasing equipment maintenance costs and the risk of production interruption. Second, the accumulated material in the pipe directly reduces the actual ventilation cross-sectional area. According to the fluid dynamics characteristics of the cyclone preheater system, the reduction of the ventilation cross-section will cause the overall system resistance to increase sharply. In order to maintain the normal production pressure difference, the high-temperature fan needs to be running at high speed for a long time, resulting in a significant increase in power consumption. Third, the existing double-slope connection method causes the material flow path to be tortuous, forming multiple cleaning dead corners inside the pipe. This not only exacerbates the material accumulation problem, but also brings great inconvenience to daily maintenance and cleaning work, further increasing the difficulty of equipment operation and maintenance.

[0004] Therefore, those skilled in the art urgently need to develop a structure for preventing blockage and reducing drag in the decomposition furnace and cyclone. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-clogging and drag-reducing structure for a decomposition furnace and a cyclone separator.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a decomposition furnace and a cyclone separator anti-clogging and resistance reduction structure, including a decomposition furnace outlet, five-stage cyclones are provided on both the left and right sides of the decomposition furnace outlet, the decomposition furnace outlet and the five-stage cyclones on both sides are connected by connecting pipes, the bottom of the connecting pipes is provided with first slopes symmetrically on the left and right, the first slopes on both sides slope downward from the center of the connecting pipes to both sides, and the tops of the two first slopes are rotatably connected by first hinges. The bottom of the first slope on both sides is rotatably connected to the second slope through the second hinge seat. The bottom of the second slope on both sides is connected to the cyclone side wall of the corresponding five-stage cyclone. The bottom of the two first slopes is provided with lifting components, which are used to drive the first slope and the second slope to adjust the tilt angle.

[0007] Preferably, the bottom of the second slope on both sides is provided with a third hinge seat, and the third hinge seat slides up and down and is in sealed contact with the cyclone sidewall of the corresponding fifth-stage cyclone.

[0008] Preferably, the lifting assembly includes a first telescopic cylinder, a support frame is provided between the five-stage cyclone cylinders on both sides, the top center of the support frame is fixedly connected to the first telescopic cylinder, and the output end of the first telescopic cylinder is fixedly connected to the first hinge seat.

[0009] Preferably, the top two sides of the support frame are rotatably connected to second telescopic cylinders, and the output ends of the second telescopic cylinders on both sides are rotatably connected to the second hinge seats on the corresponding sides.

[0010] Compared with the prior art, the beneficial effects of this utility model are: In this invention, a continuous flow channel is formed by an adjustable first and second slope, eliminating the dead zone of material accumulation at the connection between the connecting pipe and the five-stage cyclone separator. At the same time, the slope inclination angle can be dynamically adjusted according to the working conditions such as the flow rate and particle size of the gas-solid mixture, optimizing the material flow trajectory, avoiding material accumulation at the bottom of the pipe and forming blockages, significantly reducing the frequency of equipment shutdown for cleaning and improving production continuity. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the existing technology; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This is a partial structural schematic diagram of the present invention; Figure 5 The adjustment process of this utility model embodiment Figure 1 ; Figure 6 The adjustment process of this utility model embodiment Figure 2 ; Figure 7 The adjustment process of this utility model embodiment Figure 3 .

[0012] In the diagram: 1-Decomposition furnace outlet; 2-Five-stage cyclone separator; 21-Cyclone separator sidewall; 3-Connecting pipe; 4-Double-slope structure; 5-First slope; 6-First telescopic cylinder; 7-Support frame; 8-Second slope; 9-Second telescopic cylinder; 10-First hinge seat; 11-Second hinge seat; 12-Third hinge seat. Detailed Implementation

[0013] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0014] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] like Figure 1 As shown, this is a common setup in the prior art: the bottom of the connecting pipe 3 is a double-sloping structure 4, which adopts a "double-sloping connection" design. The angle is unreasonable, which makes it easy for materials to accumulate in the pipe during the production process.

[0017] Please see Figures 2-4This utility model provides an embodiment: a structure for preventing blockage and reducing resistance of a decomposition furnace and a cyclone, including a decomposition furnace outlet 1, five-stage cyclone 2 on both the left and right sides of the decomposition furnace outlet 1, the decomposition furnace outlet 1 and the five-stage cyclone 2 on both sides are connected by a connecting pipe 3, the bottom of the connecting pipe 3 is symmetrically provided with a first slope 5, the first slope 5 on both sides slopes downward from the center of the connecting pipe 3 to both sides, and the tops of the two first slopes 5 are rotatably connected by a first hinge seat 10. The bottom of the first ramp 5 on both sides is rotatably connected to the second ramp 8 through the second hinge seat 11. The bottom of the second ramp 8 on both sides is connected to the cyclone side wall 21 of the corresponding five-stage cyclone 2. The bottom of the two first ramps 5 is provided with lifting components. The lifting components are used to drive the first ramp 5 and the second ramp 8 to adjust the tilt angle. By adjusting the angle, a continuous guide channel is formed to avoid the accumulation of gas-solid mixture at the connection part.

[0018] Furthermore, the bottom of the second slope 8 on both sides is provided with a third hinge seat 12. The third hinge seat 12 and the cyclone side wall 21 of the corresponding five-stage cyclone 2 slide up and down and are in sealed contact. The contact part of the two is provided with a high-temperature resistant seal, which can be selected as a graphite ring for sealing. This ensures the sliding freedom of the second slope 8 when it is adjusted with the first slope 5, and can also effectively seal to prevent high-temperature gas leakage and dust infiltration into the sliding gap.

[0019] Furthermore, the lifting assembly includes a first telescopic cylinder 6, a support frame 7 is provided between the five-stage cyclone cylinders 2 on both sides, the top center of the support frame 7 is fixedly connected to the first telescopic cylinder 6, and the output end of the first telescopic cylinder 6 is fixedly connected to the first hinge seat 10; the top two sides of the support frame 7 are rotatably connected to second telescopic cylinders 9, and the output ends of the second telescopic cylinders 9 on both sides are rotatably connected to the second hinge seat 11 on the corresponding side.

[0020] The extension and retraction of the first telescopic cylinder 6 drives the first hinge seat 10 to move up and down, thereby causing the first ramps 5 on both sides to rotate around the first hinge seat 10, thus adjusting the tilt angle of the first ramp 5. To improve the stability and accuracy of the adjustment of the second ramp 8, the top two sides of the support frame 7 are also rotatably connected to the second telescopic cylinders 9. The output ends of the second telescopic cylinders 9 on both sides are rotatably connected to the second hinge seat 11 on the corresponding side. Through the coordinated extension and retraction of the second telescopic cylinders 9, the tilt angle of the second ramp 8 is assisted in adjusting, ensuring that the first ramp 5 and the second ramp 8 always maintain a continuous and smooth guide surface.

[0021] Furthermore, a limiting slider is provided between the first hinge seat 10 and the inner wall of the connecting pipe 3 to prevent the first hinge seat 10 from shifting when it moves; a limiting block is provided on the side wall 21 of the cyclone to prevent the third hinge seat 12 from sliding out.

[0022] Please see Figures 5-6When it is necessary to adjust the slope angle and height, the first telescopic cylinder 6 and the second telescopic cylinder 9 are activated. The piston rod of the first telescopic cylinder 6 extends, driving the first hinge seat 10 to move upward, causing the first slopes 5 on both sides to rotate around the first hinge seat 10. At the same time, the second telescopic cylinder 9 extends in coordination, pushing the second hinge seat 11 to move, adjusting the tilt angle of the second slope 8, and ensuring that the first slope 5 and the second slope 8 always maintain a continuous guide surface without dead angles.

[0023] Please see Figure 7 When it is necessary to reduce the height of the ramp, the first telescopic cylinder 6 and the second telescopic cylinder 9 can be retracted simultaneously.

[0024] Working principle of this utility model: 1. Before the equipment is started, the tilt angles of the first slope 5 and the second slope 8 are preset according to the design conditions. At this time, the first telescopic cylinder 6 and the second telescopic cylinder 9 are both in the initial telescopic position. The first slope 5 and the second slope 8 form a continuous and smooth guide channel to ensure that the gas-solid mixture can smoothly enter the five-stage cyclone.

[0025] 2. When the load on the decomposition furnace changes (such as increased material flow rate or coarser particle size) or when a tendency for material accumulation is detected in the connecting pipe 3, the first telescopic cylinder 6 and the second telescopic cylinder 9 are activated through the control system: the piston rod of the first telescopic cylinder 6 extends or retracts, driving the first hinge seat 10 to move up and down, causing the first ramps 5 on both sides to rotate around the first hinge seat 10, adjusting the tilt angle of the first ramp 5 (the tilt angle can be increased when the flow rate increases, increasing the material's downward speed); at the same time, the second telescopic cylinder 9 extends and retracts in coordination, pushing the second hinge seat 11 to move, adjusting the tilt angle of the second ramp 8, ensuring that the first ramp 5 and the second ramp 8 always maintain a continuous guide surface without dead angles, avoiding material accumulation.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A structure for preventing blockage and reducing resistance in a decomposition furnace and cyclone separators, comprising a decomposition furnace outlet (1), wherein five-stage cyclone separators (2) are provided on both the left and right sides of the decomposition furnace outlet (1), and the decomposition furnace outlet (1) and the five-stage cyclone separators (2) on both sides are connected by connecting pipes (3), characterized in that: The bottom of the connecting pipe (3) is provided with first slopes (5) symmetrically on the left and right. The first slopes (5) on both sides slope downward from the center of the connecting pipe (3) to both sides, and the tops of the two first slopes (5) are rotatably connected by the first hinge (10). The bottom of the first ramp (5) on both sides is rotatably connected to the second ramp (8) through the second hinge seat (11). The bottom of the second ramp (8) on both sides is connected to the cyclone sidewall (21) of the corresponding five-stage cyclone (2). The bottom of the two first ramps (5) is provided with lifting components, which are used to drive the first ramp (5) and the second ramp (8) to adjust the tilt angle.

2. The anti-clogging and drag-reducing structure for a decomposition furnace and cyclone according to claim 1, characterized in that: The bottom of the second slope (8) on both sides is provided with a third hinge seat (12), and the third hinge seat (12) and the cyclone sidewall (21) of the corresponding five-stage cyclone (2) slide up and down and are in sealed contact.

3. The anti-clogging and drag-reducing structure for a decomposition furnace and cyclone according to claim 2, characterized in that: The lifting assembly includes a first telescopic cylinder (6), and a support frame (7) is provided between the five-stage cyclone cylinders (2) on both sides. The top center of the support frame (7) is fixedly connected to the first telescopic cylinder (6), and the output end of the first telescopic cylinder (6) is fixedly connected to the first hinge seat (10).

4. The anti-clogging and drag-reducing structure for a decomposition furnace and cyclone according to claim 3, characterized in that: The top two sides of the support frame (7) are rotatably connected to the second telescopic cylinders (9), and the output ends of the second telescopic cylinders (9) on both sides are rotatably connected to the second hinge seats (11) on the corresponding sides.

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