Efficient clinker firing multi-stage suspension preheating mechanism

Abstract

The utility model provides an efficient clinker firing multi-stage suspension preheating mechanism, and relates to the technical field of cement production, the efficient clinker firing multi-stage suspension preheating mechanism comprises a preheating system and a stable raw material feeding system; the preheating system is provided with a vortex cyclone cylinder, an inclined wall for guiding airflow is arranged at an inlet of the vortex cyclone cylinder, the stable raw material feeding system is provided with a homogenizing silo, an air conveying chute and a weighing steady-flow bin, a rotor scale is arranged in the weighing steady-flow bin, the air conveying chute is respectively connected with the homogenizing silo and the weighing steady-flow bin, and the rotor scale is connected with the rotor scale. The raw material feeding device is simple in structure and reasonable in design, stable feeding and efficient preheating of raw materials are achieved by arranging the preheating system and the stable raw material feeding system, the equal-height variable-angle three-center 270-degree large volute spiral structure of the vortex cyclone and the inclined wall design of the vortex cyclone reduce vortex resistance, and therefore the raw materials can be stably fed and efficiently preheated. And the preheating efficiency is further improved.

Description

Technical Field

[0001] This application relates to the field of cement production technology, and more specifically, to a high-efficiency clinker calcination multi-stage suspension preheating mechanism. Background Technology

[0002] Improving the preheating efficiency of clinker calcination is crucial in cement production. The main function of the preheater system used in cement clinker calcination is to preheat and partially decompose the raw meal before it enters the kiln, while simultaneously exchanging heat. Increasing preheating efficiency means that the raw meal reaches a higher temperature before entering the rotary kiln, which helps reduce the heat load within the kiln and makes the carbonate decomposition process more efficient. Therefore, the heat consumption of clinker calcination is correspondingly reduced, which is beneficial to improving the overall energy efficiency of cement production. Thus, improving the preheating efficiency of clinker calcination has multiple important implications in cement production. It not only helps reduce production costs and improve production efficiency but also benefits environmental protection and equipment maintenance.

[0003] Therefore, this application aims to provide a high-efficiency multi-stage suspension preheating mechanism for clinker calcination, so as to better improve the preheating efficiency of cement clinker calcination. Summary of the Invention

[0004] The purpose of this application is to provide a high-efficiency multi-stage suspension preheating mechanism for clinker calcination, which can solve the technical problem of high-efficiency preheating of cement clinker calcination.

[0005] This application provides a high-efficiency clinker calcination multi-stage suspension preheating mechanism, including a preheating system and a stable raw material feeding system;

[0006] The preheating system is equipped with a vortex cyclone separator, and its inlet is provided with an inclined wall to guide the airflow and reduce the vortex resistance in the inlet area; the stable raw material feeding system is equipped with a homogenization silo, an air conveying chute and a weighing and stabilizing chamber. The inclination angle of the air chute is set to 15-25°. The weighing and stabilizing chamber is equipped with a rotor scale. The air conveying chute is connected to the homogenization silo and the weighing and stabilizing chamber respectively. The weighing and stabilizing chamber is connected to the vortex cyclone separator.

[0007] Furthermore, the bottom end of the weighing and stabilizing chamber is connected to a fluidizing gas conveying pipe, and a pneumatic switch valve is installed on the fluidizing gas conveying pipe.

[0008] Furthermore, the weighing and stabilizing chamber is equipped with an exhaust device, which is used to exhaust the gas that forms an air resistance in the weighing and stabilizing chamber cavity while the rotor scale is feeding.

[0009] Furthermore, the air conveying chute is equipped with a discharge flow control valve.

[0010] Furthermore, the stable raw material feeding system is also equipped with a feeding control unit, which is connected to the drive motors of the air conveying chute and the rotor scale, respectively.

[0011] Furthermore, the bottom end of the vortex cyclone is provided with a feeding pipe, and a spreading plate is installed on the feeding pipe.

[0012] Furthermore, the angle between the inclined surface of the spreading plate and the horizontal is set to 13-18°, and the angle between the inclined surface and the discharge pipe is not less than 130°.

[0013] Furthermore, the preheating system is also equipped with a temperature monitoring unit and a pressure regulating unit, which are respectively connected to the feeding control unit.

[0014] The beneficial effects of this utility model are:

[0015] This utility model provides a high-efficiency clinker calcination multi-stage suspension preheating mechanism, including a preheating system and a stable raw material feeding system. The preheating system is equipped with a vortex cyclone, and its inlet is provided with an inclined wall for guiding airflow to reduce vortex resistance in the inlet area. The stable raw material feeding system is equipped with a homogenization chamber, an air conveying chute, and a weighing and stabilizing chamber. The inclination angle of the air chute is set to 15-25°, and a rotor scale is installed in the weighing and stabilizing chamber. The air conveying chute is connected to the homogenization chamber and the weighing and stabilizing chamber, respectively. The weighing and stabilizing chamber is connected to the vortex cyclone. This utility model has a simple structure and reasonable design. By setting up a preheating system and a stable raw material feeding system, it achieves stable feeding and efficient preheating of raw materials. The vortex cyclone's constant height variable angle three-center 270° large volute spiral structure and its inclined wall design reduce vortex resistance and further improve preheating efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 These are schematic diagrams of the structure in some embodiments of this utility model;

[0018] Figure 2 This is a schematic diagram of the material spreading plate in some embodiments of this utility model.

[0019] The reference numerals in the attached figures are as follows:

[0020] 1. Vortex cyclone separator, 11. Feed pipe, 12. Spreading plate, 2. Homogenization silo, 3. Air conveying chute, 31. Unloading flow control valve, 4. Weighing and stabilizing silo, 5. Rotary scale, 6. Fluidizing gas conveying pipe fittings, 61. Pneumatic switch valve, 7. Exhaust device. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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 on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 application based on the specific circumstances.

[0027] See Figures 1-2 As shown in the figure, the high-efficiency clinker calcination multi-stage suspension preheating mechanism described in this embodiment includes a preheating system and a stable raw material feeding system;

[0028] The preheating system is equipped with a vortex cyclone 1, and its inlet is provided with an inclined wall to guide the airflow and reduce the vortex resistance in the inlet area; the stable raw material feeding system is equipped with a homogenization silo 2, an air conveying chute 3, and a weighing and stabilizing chamber 4. The inclination angle of the air chute is set to 15-25°, and the weighing and stabilizing chamber 4 is equipped with a rotor scale 5. The air conveying chute 3 is connected to the homogenization silo 2 and the weighing and stabilizing chamber 4 respectively, and the weighing and stabilizing chamber 4 is connected to the vortex cyclone 1.

[0029] Specifically, in this embodiment, the vortex cyclone 1 has a spiral structure with a constant height and variable angle, consisting of a three-center 270° large vortex shell.

[0030] This embodiment has a simple structure and reasonable design. By setting up a preheating system and a stable raw material feeding system, it achieves stable feeding and efficient preheating of raw materials. The inclined wall design of the vortex cyclone 1 reduces vortex resistance and further improves preheating efficiency.

[0031] In some embodiments, the bottom end of the weighing and stabilizing chamber 4 is connected to a fluidizing gas delivery pipe 6, and a pneumatic switch valve 61 is installed on the fluidizing gas delivery pipe 6.

[0032] In this embodiment, the fluidizing gas conveying pipe 6 and the pneumatic switch valve 61 connected to the bottom of the weighing and stabilizing chamber 4 can ensure the stable flow of raw material in the weighing and stabilizing chamber 4, prevent blockage, and control the on / off of gas through the pneumatic switch valve 61 to achieve precise flow regulation.

[0033] In some embodiments, the weighing and stabilizing chamber 4 is provided with an exhaust device 7, which is used to exhaust the gas that forms an air resistance in the cavity of the weighing and stabilizing chamber 4 while the rotor scale 5 is feeding.

[0034] In this embodiment, by using the exhaust device 7 installed in the weighing and stabilizing chamber 4, the gas blockage formed by the accumulation of materials can be discharged while the rotor scale 5 is feeding, so as to maintain the stable air pressure in the chamber and ensure the accurate measurement of the rotor scale 5.

[0035] In some embodiments, the air conveying chute 3 is equipped with a discharge flow control valve 31.

[0036] In this embodiment, by setting a discharge flow control valve 31 on the air conveying chute 3, the conveying amount of raw material can be precisely adjusted to ensure the stability and uniformity of raw material during the feeding process.

[0037] In some embodiments, the stable raw material feeding system is further provided with a feeding control unit, which is connected to the drive motors of the air conveying chute 3 and the rotor scale 5, respectively.

[0038] In this embodiment, the feeding control unit of the stable raw material feeding system can monitor and control the working status of the air conveying chute 3 and the rotor scale 5 in real time to ensure stable feeding and accurate metering of raw materials.

[0039] In some embodiments, the bottom end of the vortex cyclone 1 is provided with a feeding pipe 11, and a spreading plate 12 is installed on the feeding pipe 11.

[0040] Specifically, the angle between the inclined surface of the spreading plate 12 and the horizontal is set to 13-18°, and the angle between the inclined surface and the discharge pipe 11 is not less than 130°.

[0041] In this embodiment, the feeding pipe 11 and the spreading plate 12 at the bottom of the vortex cyclone 1, and the reasonable angle setting, can ensure that the preheated material is evenly spread to the next stage of preheating or firing equipment, thereby improving the preheating effect and firing quality of the material.

[0042] In some embodiments, the preheating system is further provided with a temperature monitoring unit and a pressure regulating unit, which are respectively connected to the feeding control unit.

[0043] In this embodiment, the temperature monitoring unit and pressure regulation unit of the preheating system can monitor the temperature and pressure changes of the preheating system in real time, and through connection with the feeding control unit, realize automatic adjustment of the feeding amount, so as to ensure the stable operation and efficient preheating of the preheating system.

[0044] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-stage suspension preheating mechanism for efficient clinker firing, characterized by, The preheating system and the stable raw material feeding system are included; The preheating system is provided with a vortex cyclone, and an inclined wall for guiding airflow is arranged at the inlet of the vortex cyclone to reduce vortex resistance in the inlet area; The stable raw material feeding system is provided with a homogenizing bin, an air conveying chute and a weighing and stabilizing bin, a rotor scale is arranged in the weighing and stabilizing bin, the air conveying chute is connected with the homogenizing bin and the weighing and stabilizing bin respectively, and the weighing and stabilizing bin is connected with the vortex cyclone.

2. The multi-stage suspension preheating mechanism for efficient clinker burning according to claim 1, characterized in that, A fluidized gas conveying pipe is connected with the bottom end of the weighing and stabilizing bin, and a pneumatic on-off valve is arranged on the fluidized gas conveying pipe.

3. The multi-stage suspension preheating mechanism for efficient clinker burning according to claim 1, characterized in that, The weighing and stabilizing bin is provided with an exhaust device for exhausting gas that forms air resistance in the cavity of the weighing and stabilizing bin while the rotor scale is feeding.

4. The multi-stage suspension preheating mechanism for efficient clinker burning according to claim 1, characterized in that, The air conveying chute is provided with a discharge flow control valve.

5. The multi-stage suspension preheating mechanism for efficient clinker burning according to claim 1, characterized in that, The stable raw material feeding system is further provided with a feeding control unit, and the feeding control unit is connected with the air conveying chute and the driving motor of the rotor scale respectively.

6. The multi-stage suspension preheating mechanism for efficient clinker burning according to claim 1, characterized in that, A discharging pipe is arranged at the bottom end of the vortex cyclone, and a discharging plate is arranged on the discharging pipe.

7. The multi-stage suspension preheating mechanism for efficient clinker burning according to claim 6, characterized in that, The included angle between the inclined surface of the discharging plate and the horizontal plane is 13-18°, and the included angle between the discharging plate and the discharging pipe is not less than 130°.

8. The multi-stage suspension preheating mechanism for efficient clinker burning according to claim 5, characterized in that, The preheating system is further provided with a temperature monitoring unit and a pressure adjusting unit, and the temperature monitoring unit and the pressure adjusting unit are connected with the feeding control unit respectively.

Images