A liftable wind screen device for a cement clinker grate cooler

Abstract

The application provides a liftable wind baffle device for a cement clinker grate cooler, comprising a grate cooler roof, the grate cooler roof is provided with a portal crane on the upper side, and the lower side of the portal crane is provided with a wind baffle body, a lifting mechanism is arranged between the wind baffle body and the portal crane, and a sealing mechanism is arranged between the wind baffle body and the grate cooler roof. The application is flexible and can be adjusted in real time: the fixed wind baffle "one-time-for-all" disadvantage is completely changed. The operator can adjust the height of the wind baffle at any time according to the changes of the kiln system output and working conditions, realize the accurate control of the secondary air temperature and the tertiary air temperature, and effectively solve the problem of "wind stealing". The stability and thermal efficiency are improved: through dynamic adjustment, more stable secondary air and tertiary air can be provided for the rotary kiln and the decomposing furnace, which creates a core condition for the stable operation of the kiln system, and significantly enhances the heat recovery efficiency of the grate cooler.

Description

Technical Field

[0001] This utility model relates to the field of cement production equipment, specifically to a liftable windbreak device for a cement clinker grate cooler. Background Technology

[0002] Cement clinker grate coolers are key thermal equipment in cement production lines. Their main function is to cool the high-temperature clinker exiting the rotary kiln, while simultaneously recovering heat to provide a stable supply of secondary and tertiary air to the rotary kiln and precalciner, and to provide a heat source for the coal mill and waste heat power generation system (AQC boiler). Currently, to balance the air volume and temperature at each air intake (such as secondary air, tertiary air, hot air entering the coal mill, and hot air entering the AQC boiler) within the grate cooler and to prevent "air grabbing," a fixed-height windbreak wall is typically installed inside the grate cooler.

[0003] Currently, this type of fixed windbreak wall has a significant drawback: once installed, its height cannot be adjusted. Cement kiln systems operate continuously, and the demands on airflow distribution and heat recovery within the grate cooler dynamically change under varying output, raw material, and operating conditions. A fixed-height windbreak wall cannot adapt to these changes, resulting in the system's thermal efficiency not consistently remaining at its optimal level. If adjustments are needed, the system must wait for a shutdown for maintenance, dismantle the windbreak wall, and reinstall a new one, consuming significant manpower, resources, and time, increasing production costs, and impacting production continuity and flexibility.

[0004] Therefore, we have made improvements to this by proposing a liftable windbreak device for cement clinker grate coolers. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a liftable windbreak device for cement clinker grate coolers, which solves the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: A liftable windbreak device for cement clinker grate coolers is proposed to solve the above problems.

[0007] The application is as follows: The device includes a grate cooler roof, on which a gantry crane is mounted on the upper side. A windbreak wall body is installed on the lower side of the gantry crane. A lifting mechanism is provided between the windbreak wall body and the gantry crane, and a sealing mechanism is provided between the windbreak wall body and the grate cooler roof.

[0008] As a preferred technical solution of this application, the windbreak wall body includes a base and a wear-resistant castable layer, and the base includes several connecting plates and several connecting pipes, and the several connecting plates and several connecting pipes are connected by welding to form the main frame. Several reinforcing ribs are fixedly connected to both sides of the connecting plate. The connecting plate is a CrNi heat-resistant stainless steel plate, and the connecting pipe is a CrNi heat-resistant steel pipe.

[0009] As a preferred technical solution of this application, the wear-resistant castable layer adopts RT-grade or higher grade aluminosilicate high-strength wear-resistant castable, and the wear-resistant castable layer is tightly attached to the surface of the substrate and penetrates into part of the structural gaps of the substrate to form a stable bond with the substrate.

[0010] As a preferred technical solution of this application, the lifting mechanism includes a manual hoist, a lifting ring, and a lifting lug, and each of the three is provided in twos. The lifting ring is fixedly installed on the surface of the gantry crane, and the lifting lug is connected to the windbreak wall. The upper hook and lower hook of the manual hoist are respectively connected to the lifting ring and the lifting lug.

[0011] As a preferred technical solution of this application, the sealing mechanism includes a sealing box, and the sealing box is installed on the surface of the grate cooler roof, and the windbreak wall body is slidably connected in the channel of the sealing box.

[0012] As a preferred technical solution of this application, the gap between the windbreak wall body and the sealing box is filled with high-temperature resistant aluminum silicate cotton.

[0013] Compared with the prior art, the present invention has the following significant advantages: 1. Flexible operation and real-time adjustment: It completely changes the drawbacks of fixed windbreak walls that are "one-time solution". Operators can adjust the height of the windbreak wall at any time according to changes in the kiln system's output and operating conditions, achieving precise control of secondary and tertiary air temperatures and effectively solving the problem of "wind grabbing".

[0014] 2. Improve system stability and thermal efficiency: Through dynamic adjustment, more stable secondary and tertiary air can be provided for rotary kiln and decomposition furnace, creating the core conditions for stable operation of kiln system, while significantly enhancing the heat recovery efficiency of grate cooler.

[0015] 3. Increase waste heat power generation: By optimizing the airflow distribution within the grate cooler, the exhaust gas leading to the AQC boiler can be more effectively guided and distributed, which is expected to increase its inlet air temperature and volume, thereby increasing power generation per ton of clinker. It is estimated that this technological upgrade can achieve an economic benefit of increasing power generation per ton of clinker by 0.5 kWh / t or more.

[0016] 4. Saves maintenance costs and downtime: It avoids the downtime, dismantling and reconstruction work that must be carried out due to the adjustment of the windbreak wall, saving a lot of maintenance material costs, labor costs and valuable production time.

[0017] 5. Simple structure and high reliability: It adopts mature gantry cranes and hand chain hoists as the drive mechanism, which has a simple structure, low manufacturing cost, and convenient maintenance. It is also very suitable for the harsh environment of high temperature and high dust inside the grate cooler, with a low failure rate. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the second embodiment of the present invention; Figure 3 This is a frontal cross-sectional view of the present invention. Figure 4 This is a schematic diagram of the internal structure of the windbreak wall body of this utility model.

[0019] The image shows: 1. Grate cooler roof; 2. Gantry crane; 3. Windbreak wall body; 31. Base; 311. Connecting plate; 312. Connecting pipe; 313. Reinforcing rib; 32. Wear-resistant castable layer; 4. Lifting mechanism; 41. Manual hoist; 42. Lifting ring; 43. Lifting lug; 5. Sealing mechanism; 51. Sealing box; 52. High-temperature resistant aluminum silicate cotton. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described examples are only some embodiments of this utility model, and not all embodiments.

[0021] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0022] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[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 utility model, it should be noted that the terms "upper" and "lower," 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 utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms 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 on this utility model. In addition, the terms "first" and "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] To address the technical problems in the background section, the following liftable windbreak wall device for cement clinker grate coolers is provided: Combination Figure 1 - Figure 4 As shown, the present invention provides a liftable windbreak wall device for a cement clinker grate cooler, including a grate cooler roof 1, a gantry crane 2 installed on the upper side of the grate cooler roof 1, a windbreak wall body 3 installed on the lower side of the gantry crane 2, a lifting mechanism 4 between the windbreak wall body 3 and the gantry crane 2, and a sealing mechanism 5 between the windbreak wall body 3 and the grate cooler roof 1.

[0026] In this embodiment, a gantry crane 2 is installed on the top of the grate cooler 1, providing solid support for the stable operation of the device. A windbreak wall body 3 is located on the lower side of the gantry crane 2, which is the core component for achieving the windbreak function. To achieve flexible raising and lowering of the windbreak wall body 3, a lifting mechanism 4 is installed between the windbreak wall body 3 and the gantry crane 2. Operators can conveniently adjust the height of the windbreak wall body 3 according to actual production needs through this mechanism. Meanwhile, considering the complex environment of high temperature and high dust inside the grate cooler, a sealing mechanism 5 is specially installed between the windbreak wall body 3 and the top of the grate cooler 1 to prevent gas leakage and ensure the sealing and stability of the device. This effectively avoids interference from external factors on the device's performance, ensuring that the entire liftable windbreak wall device can operate efficiently and stably in the cement clinker grate cooler.

[0027] As a preferred embodiment, based on the above method, the windbreak wall body 3 further includes a base 31 and a wear-resistant castable layer 32, and the base 31 includes a plurality of connecting plates 311 and a plurality of connecting pipes 312, and the plurality of connecting plates 311 and the plurality of connecting pipes 312 are connected by welding to form a main frame. A plurality of reinforcing ribs 313 are fixedly connected to both sides of the connecting plates 311. The connecting plates 311 are 06Cr25Ni20 heat-resistant stainless steel plates, and the connecting pipes 312 are 06Cr25Ni20 heat-resistant steel pipes.

[0028] In this embodiment, the windbreak wall body 3 adopts a layered composite structure, consisting of a substrate 31 and a wear-resistant castable layer 32. This structure ensures both overall strength and improved wear resistance. The main frame of the substrate 31 is formed by welding several connecting plates 311 and several connecting pipes 312 together, ensuring the strength and sealing of the connections. To enhance structural stability, several reinforcing ribs 313 are fixedly installed on both sides of the connecting plates 311, forming a three-dimensional support system.

[0029] In terms of material selection, the connecting plate 311 is made of 06Cr25Ni20 heat-resistant stainless steel plate, and the connecting pipe 312 is made of the same type of heat-resistant steel pipe. This austenitic heat-resistant steel has excellent high-temperature strength and oxidation resistance, and can operate stably for a long time under the harsh working conditions of high temperature and frequent thermal shock of the grate cooler, effectively extending the service life of the windbreak wall body.

[0030] As a preferred embodiment, based on the above method, the wear-resistant castable layer 32 is further made of aluminosilicate high-strength wear-resistant castable of grade RT-85 or above, and the wear-resistant castable layer 32 is tightly attached to the surface of the substrate 31 and penetrates into part of the structural gaps of the substrate 31 to form a stable bond with the substrate 31.

[0031] In this embodiment, the aluminosilicate-based high-strength wear-resistant castable possesses excellent wear resistance and high-temperature stability. It effectively resists the intense erosion and wear of materials within the complex and harsh working environment of the cement clinker grate cooler, significantly reducing the wear rate of the windbreak wall body. During construction, the wear-resistant castable layer 32 adheres tightly to the surface of the substrate 31, penetrating into some of the structural gaps of the substrate 31. This tight embedding method creates a stable bond between the wear-resistant castable layer 32 and the substrate 31, integrating them into a robust, durable, and reliable windbreak wall structure, providing strong support for the stable operation of the grate cooler.

[0032] As a preferred embodiment, based on the above method, the lifting mechanism 4 further includes a manual hoist 41, a lifting ring 42 and a lifting lug 43, and each of the three is provided in twos. The lifting ring 42 is fixedly installed on the surface of the gantry crane 2, and the lifting lug 43 is connected to the windbreak wall. The upper hook and the lower hook of the manual hoist 41 are respectively connected to the lifting ring 42 and the lifting lug 43.

[0033] In this embodiment: two lifting rings 42 are symmetrically fixedly installed on the preset position surface of the gantry crane 2 to ensure balanced force; the lifting lugs 43 are precisely welded to the corresponding position on the top of the windbreak wall body 3, forming a stable connection with the windbreak wall. In actual operation, the upper hook of each manual hoist 41 is reliably connected to the lifting ring 42 on the gantry crane 2, and the lower hook is tightly hooked to the lifting lug 43 on the windbreak wall body 3. By manually operating the two manual hoists simultaneously, the windbreak wall can be raised and lowered smoothly and reliably vertically.

[0034] In a preferred embodiment, based on the above method, the sealing mechanism 5 further includes a sealing housing 51, which is installed on the surface of the grate cooler roof 1, and the windbreak wall body 3 is slidably connected within the channel of the sealing housing 51. The gap between the windbreak wall body 3 and the sealing housing 51 is filled with high-temperature resistant aluminum silicate cotton 52.

[0035] In this embodiment: the sealing housing 51 is made of high-strength alloy steel and is firmly installed on the surface of the grate cooler roof 1, slidingly engaging with the windbreak wall body 3. The gap between the windbreak wall body 3 and the sealing housing 51 is filled with high-temperature resistant aluminum silicate cotton 52. This high-quality insulation material has excellent high-temperature resistance and good elasticity, maintaining stability for extended periods in environments above 1000℃ and effectively filling tiny gaps created during machining. This combination of soft sealing material and rigid housing ensures the flexibility of the windbreak wall body 3 during lifting and lowering, while also forming multiple sealing lines to effectively prevent the leakage of high-temperature gas and dust from inside the grate cooler, while preventing cold air infiltration that could affect cooling efficiency, significantly improving the sealing performance and thermal stability of the entire device.

Claims

1. A liftable windbreak device for a cement clinker grate cooler, comprising a grate cooler roof (1), characterized in that: The grate cooler roof (1) drives the gantry crane (2) installed on the upper side, and the gantry crane (2) is provided with a windbreak wall body (3) on the lower side. A lifting mechanism (4) is provided between the windbreak wall body (3) and the gantry crane (2), and a sealing mechanism (5) is provided between the windbreak wall body (3) and the grate cooler roof (1).

2. The liftable windbreak wall device for a cement clinker grate cooler according to claim 1, characterized in that: The windbreak wall body (3) includes a base (31) and a wear-resistant castable layer (32). The base (31) includes several connecting plates (311) and several connecting pipes (312). The connecting plates (311) and several connecting pipes (312) are connected by welding to form the main frame. Several reinforcing ribs (313) are fixedly connected to both sides of the connecting plate (311). The connecting plate (311) is a 06Cr25Ni20 heat-resistant stainless steel plate, and the connecting pipe (312) is a 06Cr25Ni20 heat-resistant steel pipe.

3. A liftable windbreak device for a cement clinker grate cooler according to claim 2, characterized in that: The wear-resistant castable layer (32) is made of RT-85 grade or higher aluminosilicate high-strength wear-resistant castable, and the wear-resistant castable layer (32) is tightly attached to the surface of the substrate (31) and penetrates into part of the structural gaps of the substrate (31) to form a stable bond with the substrate (31).

4. A liftable windbreak wall device for a cement clinker grate cooler according to claim 1, characterized in that: The lifting mechanism (4) includes a manual hoist (41), a lifting ring (42) and a lifting lug (43), and each of the three is provided in twos. The lifting ring (42) is fixedly installed on the surface of the gantry crane (2), and the lifting lug (43) is connected to the windbreak wall. The upper hook and lower hook of the manual hoist (41) are respectively connected to the lifting ring (42) and the lifting lug (43).

5. A liftable windbreak wall device for a cement clinker grate cooler according to claim 1, characterized in that: The sealing mechanism (5) includes a sealing box (51), and the sealing box (51) is installed on the surface of the grate cooler roof (1), and the windbreak wall body (3) is slidably connected in the channel of the sealing box (51).

6. A liftable windbreak wall device for a cement clinker grate cooler according to claim 5, characterized in that: The gap between the windbreak wall body (3) and the sealed box (51) is filled with high-temperature resistant aluminum silicate cotton (52).

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