Grate cooler flow limiting device
By installing a flow restriction device at the tail of the grate cooling machine, and using components such as cross beams and flow stops to limit the material flow, the flow problem of powdered materials is solved, the material layer is stabilized and efficient cooling is achieved, and the stability and heat recovery efficiency of the production line are improved.
Patent Information
- Application Number
- CN202422559163.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-23
AI Technical Summary
When the stepper grate chiller treats powdery materials, the material layer has strong fluidity and is prone to flushing, resulting in reduced cooling efficiency and heat recovery efficiency. Existing solutions such as reducing air volume or increasing equipment cannot effectively solve the production stability problem.
The flow limiting device consisting of cross beams, flow stops, traction lines, brackets, pulleys and counterweights is used to suspend the flow stops above the grate bed through the traction lines, limit the discharge volume, block the material flow, intercept high-temperature clinker and gradually cool it.
It improves the adaptability of powdered materials, stabilizes the material layer, prevents punching, improves cooling effect and heat recovery efficiency, and enhances the stability of the production line.
Smart Images
Figure CN223243335U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a current limiting device for a grate cooler. Background Art
[0002] The walking grate cooler has poor adaptability to powdered materials, and is prone to material impact problems during the production process, which greatly reduces the clinker cooling efficiency and heat recovery efficiency.
[0003] A grate cooler uses a high-volume fan to distribute air through a plenum chamber, lifting the material and dispersing it throughout the bed, cooling it in the process. When used with granular materials (such as cement clinker), the bed's inherent fluidity is poor, resulting in a stable layer that remains stable even as the grate bed moves in a step-by-step manner. However, when used with powdered materials, the inherent fluidity of powders is greater than that of granular materials, and the internal airflow in the grate cooler enhances this fluidity. As the bed moves along the grate bed, the unstable and fluid nature of the material layer can lead to material rushing. This can cause the previously stable material layer to flow from the center of the grate cooler to the discharge outlet in a short period of time, like a stream, without stopping. This high material flow and inadequate cooling significantly reduce the grate cooler's heat recovery efficiency. Furthermore, the high temperature of the material can significantly increase damage to downstream equipment and non-standard components. The current mainstream solution to the problem is to reduce the air volume of the grate cooler, but this does not allow for high-output production. If full production capacity is to be achieved and standards are to be met, a larger grate cooler must be used, which wastes equipment performance and greatly increases the investment in the production line. Summary of the Invention
[0004] The utility model provides a current limiting device for a grate cooler in order to solve the problems existing in the prior art.
[0005] The technical solutions adopted in this utility model are:
[0006] A grate cooler current limiting device comprises a crossbeam, a baffle, a traction line, a bracket, a counterweight and a pulley. The crossbeam is installed at the rear of the grate cooler. Several baffles are arranged along the width direction of the grate cooler, and one end of each baffle is hinged to the crossbeam. The bracket is fixed to the grate cooler. Several pulleys are arranged on the bracket at intervals. The traction line is wound on the pulley, and one end is fixed to the counterweight and the other end is fixed to the baffle. The baffle is horizontally suspended above the grate bed.
[0007] Furthermore, a guide block is provided on each traction line, and the guide block is fixed to the traction line.
[0008] Furthermore, a reinforcement plate is provided at one end of each baffle, and adjacent reinforcement plates are fitted together.
[0009] Furthermore, the traction line is a steel cable.
[0010] The utility model has the following beneficial effects:
[0011] This device can limit the amount of material discharged from the tail end of the movable grate bed to stabilize the material layer, intercept high-temperature clinker during the impact, and block the material flow to restore the material layer. At the same time, the intercepted high-temperature clinker is gradually cooled at the tail end of the grate bed. Grate coolers equipped with current limiting devices can improve the adaptability of step-type grate coolers for powdered materials. They can also be used in production lines with unstable production conditions to improve the stability of the material layer and thus the stability of the production line. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a structural diagram of the utility model.
[0013] Figure 2 It is the main view of the utility model.
[0014] Figure 3 It is a side view of the utility model. DETAILED DESCRIPTION
[0015] The present invention will be further described below with reference to the accompanying drawings.
[0016] like Figures 1 to 3 The present invention provides a grate cooler current limiting device, comprising a crossbeam 1, a baffle 2, a traction line 3, a bracket 6, a counterweight 7, and a pulley 8. The device is mounted on the rear end 4 of the grate cooler. The crossbeam 1 is mounted there and welded to the crossbeam of the grate cooler's lower housing. The baffles 2 are mounted on the crossbeam, with multiple groups arranged across the width of the grate cooler, covering the entire movable grate bed. The baffles 2 are suspended by the counterweight 7 via the traction line 3 (in this application, the traction line is a steel cable), hovering above the grate bed. A guide block 5 is mounted on the top of the grate cooler and embedded in the refractory material. The guide block's top plate is slidable along the length of the grate cooler. The steel cable passes through the guide block, driving the guide block's top plate to slide along the length of the grate cooler as the baffle moves up and down. The pulley 8 is mounted on the pulley 6 bracket, which is mounted on the grate cooler's top cover. After installation, the baffle should rotate freely.
[0017] Install the guide block and pass the steel cable through it. The guide plate can prevent the steel cable from shaking left and right and causing damage to the steel cable. After installation, adjust the number of counterweight blocks so that the baffle can be lifted when the grate bed is pushed forward as a whole. At the same time, ensure that the impact force during the punching process cannot lift the baffle. This can ensure high production while preventing the occurrence of punching.
[0018] During normal operation of a walking grate cooler equipped with this current limiting device, the grate bed's hydraulic propulsion system pushes the grate bed through hydraulic rods as the grate bed advances as a whole, driving the material layer to lift the baffle. During separate recovery, the clinker gradually falls into the discharge port, causing the baffle to fall. When material rushing occurs, the material layer collapses, unable to lift the baffle, causing it to fall. During this collapse, the high-temperature clinker rushing to the rear end of the grate cooler is blocked by the falling baffle, intercepted at the rear end of the grate cooler, and cooled.
[0019] This equipment can limit the flow of material layers, improve the stability of material layers, effectively prevent the occurrence of material impact, and improve the cooling effect and heat recovery efficiency.
[0020] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principles of the present invention. These improvements should also be regarded as the scope of protection of the present invention.
Claims
1. A grate cooler current limiting device, characterized in that: The invention comprises a crossbeam (1), a baffle (2), a traction line (3), a bracket (6), a counterweight (7) and a pulley (8), wherein the crossbeam (1) is installed at the tail of the grate cooler, a plurality of baffles (2) are arranged along the width direction of the grate cooler, and one end of each baffle (2) is hinged to the crossbeam (1), the bracket (6) is fixed on the grate cooler, a plurality of pulleys (8) are arranged on the bracket (6) at intervals, the traction line (3) is wound on the pulley (8), and one end is fixed to the counterweight (7), and the other end is fixed to the baffle (2), and the baffle (2) is suspended horizontally above the grate bed.
2. The grate cooler current limiting device according to claim 1, characterized in that: A guide block (5) is passed through each traction line (3), and the guide block (5) is fixed to the traction line (3).
3. The grate cooler current limiting device according to claim 1, characterized in that: A reinforcement plate (9) is provided at one end of each baffle plate (2), and adjacent reinforcement plates (9) are fitted together.
4. The grate cooler current limiting device according to claim 1, characterized in that: The traction line (3) is a steel cable.