Preheating device for cement production

Abstract

The utility model relates to the technical field of cement production preheating, and discloses a preheating device for cement production. The preheating device for cement production comprises a device structure assembly, an inner cylinder is installed at the upper end of the device structure assembly, a hanging piece is installed in the inner cylinder, a fixing ring is installed at the upper end of the inner cylinder, an outer cylinder is installed at the upper end of the fixing ring, and a part assembly is installed at the lower end of the device structure assembly. The device comprises a device structure assembly, an air chamber assembly is installed on the right side of the upper end of the device structure assembly, an air inlet box is installed at the upper end of the air chamber assembly, an air inlet is formed in the left side of the upper end of the air inlet box, and a nanometer heat insulation plate is installed in the air inlet box. The problems that follow-up resistance is increased, follow-up efficiency is low, power consumption and coal consumption cannot be reduced, and production cost cannot be reduced are solved.

Description

Technical Field

[0001] This utility model relates to the field of cement production preheating technology, specifically a preheating device for cement production. Background Technology

[0002] Cement is an essential raw material for construction. With the continuous advancement of urbanization in China, the construction of large-scale infrastructure and buildings requires a large amount of cement. In existing technologies, calcination preheating is a crucial step in the cement production process; however, in the current social environment, its continued use is no longer practical. Therefore, cement preheaters have emerged on the market.

[0003] A relevant reference is Chinese utility model patent CN211616130U, which discloses a preheating device for cement production, including a tank, a motor, and a support plate. A preheating barrel is installed inside the tank, with a feed inlet at the top and a stirring shaft in the middle. A heater is installed at the bottom of the tank, and discharge ports are located on both sides of the bottom. The tank is mounted on a drive shaft, which has a first pulley with a belt. A second pulley is mounted on the other end of the belt and is mounted on the motor. The motor and the first pulley are mounted on the support plate. This utility model provides a cement preheating device that allows for more thorough preheating of cement, enables the handling of cement during the preheating process, and facilitates operation.

[0004] Based on the above patent search and combined with the existing equipment, it was found that the existing first-line kiln system has high resistance, high power consumption, and high coal consumption, which cannot meet the production requirements of the new era. After research, it was confirmed that the inlet pipes of each stage of the preheater cyclone in the existing system are too small, which leads to increased subsequent resistance, resulting in low efficiency and the inability to reduce power and coal consumption and reduce production costs. These problems affect the use of the equipment. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a preheating device for cement production. It effectively prevents problems such as small inlet pipes of each stage of the preheater in existing systems, which leads to increased subsequent resistance, low efficiency, and inability to reduce power and coal consumption and production costs.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a preheating device for cement production, comprising a device structural component, wherein a component assembly is installed at the lower end of the device structural component to facilitate subsequent discharge of powder, and a wind chamber component is installed on the upper right side of the device structural component to facilitate subsequent expansion of the inlet pipe, thereby increasing production capacity, reducing energy consumption, and reducing costs.

[0009] The upper end of the device structure component is equipped with an inner cylinder, the inside of the inner cylinder is equipped with a hanging plate, the upper end of the inner cylinder is equipped with a fixing ring, the upper end of the fixing ring is equipped with an outer cylinder, and the outer cylinder is installed on the upper end of the fixing ring to facilitate the subsequent exhaust of hot air.

[0010] An air inlet box is installed at the upper end of the air chamber assembly. An air inlet is installed on the upper left side of the air inlet box. A nano-insulation board is installed inside the air inlet box. The air inlet connects the air inlet box to the cyclone body.

[0011] As a preferred technical solution of this utility model, a cyclone body is installed at the upper end of the device structural component. The cyclone body installs the upper structure and facilitates the subsequent heating treatment of raw materials.

[0012] As a preferred embodiment of this utility model, the upper end of the component assembly is equipped with a discharge cylinder, and the upper end of the discharge cylinder is equipped with a connection port. The lower end of the discharge cylinder is equipped with a valve, which is installed at the lower end of the cyclone body to facilitate the subsequent opening and closing of the lower end of the cyclone body.

[0013] As a preferred technical solution of this utility model, a conveying pipe is installed at the upper end of the air chamber assembly, and a connecting box is installed at the upper end of the conveying pipe. The connecting box connects the conveying pipe to facilitate the subsequent delivery of air power to the interior of the air inlet box.

[0014] As a preferred embodiment of this utility model, the component assembly is installed at the lower end of the cyclone body in the device structure assembly, and the wind chamber assembly is installed on the right side of the cyclone body in the device structure assembly.

[0015] As a preferred technical solution of this utility model, the upper end of the cyclone body is raised by 800mm from the original 4492 meters. The height of the inner cylinder is 2.5 meters, and the height of the hanging plate is 0.5 meters higher than the height of the inner cylinder. The hanging plate is reinforced with stainless steel screws.

[0016] As a preferred embodiment of this utility model, the discharge cylinder is tilted to the right at 67°, the lower end of the discharge cylinder has a size of 900mm, and the connection port is installed at the lower end of the cyclone body.

[0017] As a preferred technical solution of this utility model, the air inlet is installed on the right side of the cyclone body, the area of ​​the air inlet is increased from 8.017 square meters to 9.96 square meters, the air inlet box is expanded by 600 mm from the base of 3110 mm, the external angle is 50°, the thickness of the air inlet box is 250 mm, the area of ​​the air inlet box is 11.236 square meters, and the area of ​​the nano-insulation board is 100 mm².

[0018] Compared with the prior art, this utility model provides a preheating device for cement production that has the following features:

[0019] Beneficial effects:

[0020] 1. This utility model, through the design of the overall device, increases the area of ​​the existing cyclone inlet ventilation duct from 8.017 square meters to 9.6 square meters; reduces system resistance, lowers system air consumption, and reduces energy loss. The constriction is changed from a 2.7-meter trapezoid to a 2.6-meter circle with a constriction height of 80cm, ensuring uniform air velocity. It is expected that the tertiary air damper opening will reach 100%, significantly improving the coal combustion rate. The height of the secondary inner cylinder is increased by 0.5 meters from the original 2-meter inner cylinder hanging plates, reinforced with stainless steel screws, improving separation efficiency, which is expected to reach 90%. This enhances heat exchange, improves the efficiency of the high-temperature fan, reducing the pressure head from 10500Pa to 9500Pa. The high-temperature fan valve is removed, reducing system power consumption. This effectively prevents the existing system's preheater cyclone inlet ducts from being too small, leading to increased subsequent resistance, low efficiency, and an inability to reduce power and coal consumption, thus lowering production costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structural components of the structural device of this utility model;

[0023] Figure 3 This is a schematic diagram of the structural component assembly of this utility model;

[0024] Figure 4 This is a schematic diagram of the structural air chamber component of this utility model.

[0025] The components include: 1. Device structural components; 101. Cyclone tube body; 102. Inner tube; 103. Hanging plate; 104. Fixing ring; 105. Outer tube; 2. Parts components; 201. Discharge tube; 202. Connection port; 203. Valve; 3. Air chamber components; 301. Conveying pipe; 302. Connection box; 303. Air inlet box; 304. Air inlet; 305. Nano-insulation board. Detailed Implementation

[0026] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0027] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Please see Figure 1 - Figure 4 In this embodiment, a preheating device for cement production includes: a device structure component 1, an inner cylinder 102 installed at the upper end of the device structure component 1, a hanging plate 103 installed inside the inner cylinder 102, a fixing ring 104 installed at the upper end of the inner cylinder 102, an outer cylinder 105 installed at the upper end of the fixing ring 104, a parts component 2 installed at the lower end of the device structure component 1, a wind chamber component 3 installed on the upper right side of the device structure component 1, an air inlet box 303 installed at the upper end of the wind chamber component 3, an air inlet 304 installed on the upper left side of the air inlet box 303, a nano-insulation board 305 installed inside the air inlet box 303, the parts component 2 installed at the lower end of the cyclone body 101 in the device structure component 1, and the wind chamber component 3 installed on the right side of the cyclone body 101 in the device structure component 1.

[0030] With the above structure: the device structure component 1 facilitates the modification of the original upper structure of the cyclone, thereby reducing resistance and improving efficiency; the component component 2 is installed at the lower end of the device structure component 1 to facilitate the subsequent discharge of powder; and the air chamber component 3 is installed on the right side of the device structure component 1 to facilitate the subsequent expansion of the inlet pipe, thereby achieving the goals of increasing production capacity, reducing energy consumption, and reducing costs.

[0031] Please see Figure 1 - Figure 4 The upper end of the device structure component 1 is equipped with a cyclone body 101. The upper end of the cyclone body 101 is raised by 800mm from the original 4492 meters. The height of the inner cylinder 102 is 2.5 meters. The height of the hanging plate 103 is 0.5 meters higher than the height of the inner cylinder 102. The hanging plate 103 is reinforced with stainless steel screws.

[0032] The above structure allows for the installation of the upper structure by mounting the cyclone body 101, facilitating subsequent heating of the raw materials. The inner cylinder 102 is installed inside the cyclone body 101, enabling effective gas-solid separation of the high-temperature airflow and materials during rotation and promoting heat exchange. The hanging plate 103 is installed inside the inner cylinder 102, enhancing the swirling intensity and heat exchange rate. The fixing ring 104 is installed at the upper end of the cyclone body 101, facilitating the subsequent installation of the upper outer cylinder 105. The outer cylinder 105 is installed at the upper end of the fixing ring 104, facilitating the subsequent discharge of hot air.

[0033] Please see Figure 1 - Figure 4 The upper end of component assembly 2 is equipped with a discharge cylinder 201, and the upper end of the discharge cylinder 201 is equipped with a connection port 202. The lower end of the discharge cylinder 201 is equipped with a valve 203. The discharge cylinder 201 is tilted to the right at 67°. The lower end of the discharge cylinder 201 has a size of 900mm. The connection port 202 is installed at the lower end of the cyclone body 101.

[0034] With the above structure: material is discharged by installing the discharge cylinder 201, the connection port 202 is installed at the upper end of the discharge cylinder 201, which facilitates the subsequent installation of the discharge cylinder 201 to the lower end of the cyclone body 101, and the valve 203 is installed at the lower end of the cyclone body 101, which facilitates the subsequent closing and opening of the lower end of the cyclone body 101.

[0035] Please see Figure 1 - Figure 4 The upper end of the air chamber assembly 3 is equipped with a conveying pipe 301, and the upper end of the conveying pipe 301 is equipped with a connecting box 302. The air inlet 304 is installed on the right side of the cyclone body 101. The area of ​​the air inlet 304 is increased from 8.017 square meters to 9.96 square meters. The air inlet box 303 is expanded by 600 mm from the base of 3110 mm, with an external bevel angle of 50°. The thickness of the air inlet box 303 is 250 mm, and the area of ​​the air inlet box 303 is 11.236 square meters. The area of ​​the nano-insulation board 305 is 100 mm.

[0036] With the above structure: the high-temperature fan is installed and used by installing the delivery pipe 301; the connecting box 302 connects the delivery pipe 301 to facilitate the subsequent delivery of air to the inside of the air inlet box 303; the air inlet box 303 is installed on the left side of the connecting box 302 to facilitate the subsequent delivery of air to the inside of the cyclone body 101; the air inlet 304 connects the air inlet box 303 and the cyclone body 101; and the nano-insulation board 305 is installed inside the air inlet box 303 to facilitate the subsequent heat insulation of the inside of the air inlet box 303.

[0037] In use, firstly, the upper top cover of the cyclone body 101 is raised by 800mm from the 4492m base. An inner cylinder 102 is installed inside the cyclone body 101. The inner cylinder 102 is raised by 500mm from the 2m base. Hanging plates 103 are installed inside the inner cylinder 102, and their height is adjusted to be 0.5m higher than the inner cylinder 102. Stainless steel screws are used to reinforce the hanging plates 103, improving separation efficiency to an expected 90%, enhancing heat exchange, and increasing the existing cyclone inlet ventilation duct area from 8.017 square meters to 9.6 square meters. This reduces system resistance, lowers system air consumption, and reduces energy loss. The constriction is changed from a 2.7m trapezoid to a 2.6m circle with a constriction height of 80cm to ensure uniform airflow. The tertiary air damper opening is expected to reach 1... The system significantly improves coal combustion. An air inlet 304 is installed on the right side of the cyclone body 101. The air inlet 304 is expanded by 600mm from its original 3110mm diameter, with an external angle of 50 degrees. The air inlet 304 is connected to the air inlet box 303. A nano-insulation board 305 with an area of ​​100mm² and a casting refractory thickness of 250mm is installed inside the air inlet box 303. After completion, the area of ​​the air inlet 304 increases from 8.991 square meters to 11.236 square meters. A high-temperature fan is installed at the lower end of the conveying pipe 301. The high-temperature fan is upgraded from 3800KW to 3000KW, improving its efficiency to an expected level of over 85%. This reduces the fan current and improves the high-temperature fan's efficiency, lowering the pressure head from 10500Pa to 9500Pa, thus reducing system power consumption.

[0038] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A preheating device for cement production, characterized in that, The device includes a structural assembly (1), an inner cylinder (102) is installed at the upper end of the structural assembly (1), a hanging plate (103) is installed inside the inner cylinder (102), a fixing ring (104) is installed at the upper end of the inner cylinder (102), an outer cylinder (105) is installed at the upper end of the fixing ring (104), a parts assembly (2) is installed at the lower end of the structural assembly (1), a wind chamber assembly (3) is installed on the upper right side of the structural assembly (1), an air inlet box (303) is installed at the upper end of the wind chamber assembly (3), an air inlet (304) is installed on the upper left side of the air inlet box (303), and a nano-insulation board (305) is installed inside the air inlet box (303).

2. The preheating device for cement production according to claim 1, characterized in that, The upper end of the device structure component (1) is equipped with a cyclone body (101).

3. The preheating device for cement production according to claim 1, characterized in that, The upper end of the component assembly (2) is equipped with a discharge cylinder (201), and the upper end of the discharge cylinder (201) is equipped with a connection port (202), and the lower end of the discharge cylinder (201) is equipped with a valve (203).

4. A preheating device for cement production according to claim 1, characterized in that, The upper end of the air chamber assembly (3) is equipped with a delivery pipe (301), and the upper end of the delivery pipe (301) is equipped with a connecting box (302).

5. A preheating device for cement production according to claim 1, characterized in that, The component assembly (2) is installed at the lower end of the cyclone body (101) in the device structure assembly (1), and the wind chamber assembly (3) is installed on the right side of the cyclone body (101) in the device structure assembly (1).

6. A preheating device for cement production according to claim 2, characterized in that, The upper end of the cyclone body (101) is raised by 800mm from the original 4492 meters. The height of the inner cylinder (102) is 2.5 meters. The height of the hanging plate (103) is 0.5 meters higher than the height of the inner cylinder (102). The hanging plate (103) is reinforced with stainless steel screws.

7. A preheating device for cement production according to claim 3, characterized in that, The discharge cylinder (201) is tilted to the right at 67°, the lower end of the discharge cylinder (201) is 900mm in size, and the connection port (202) is installed at the lower end of the cyclone body (101).

8. A preheating device for cement production according to claim 4, characterized in that, The air inlet (304) is installed on the right side of the cyclone body (101). The area of ​​the air inlet (304) is increased from 8.017 square meters to 9.96 square meters. The air inlet box (303) is expanded by 600 mm from the base of 3110 mm, with an external angle of 50°. The thickness of the air inlet box (303) is 250 mm. The area of ​​the air inlet box (303) is 11.236 square meters. The area of ​​the nano-insulation board (305) is 100 mm.

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