Breathable oxygenation device for sintered material layer

Abstract

The utility model discloses a sintered material layer ventilation oxygenation device which comprises a plurality of rows of rotating rollers arranged in parallel at intervals, each rotating roller is horizontally arranged above a sintered material layer through stand columns at the two ends, cutting teeth are installed on each rotating roller, the cutting teeth are fusiform, the middle portions of the cutting teeth are installed on the corresponding rotating rollers, and the rotating rollers are arranged on the stand columns. The mounting positions of the cutting teeth on the rotating rollers are staggered in the axial direction, and the lower ends of the cutting teeth are lower than the top face of the sintered material layer. The problem that an existing ventilation and oxygenation device for promoting combustion needs to be driven by an external power source is solved, the adopted ventilation and oxygenation device conducts unpowered driving through self transmission force, and the complexity and the operation cost of equipment are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sintering equipment technical field, specifically, relate to a sintering material layer ventilation oxygenation device. BACKGROUND

[0002] Sintering process is a complex physical and chemical process, to accurately control temperature, pressure and oxygen content and so on, avoid ignition after sintering material surface compaction, poor permeability, lead to material layer not to burn, affect the improvement of sinter ore production quality. Good permeability then the resistance of fan is very small, the negative pressure in the sintering machine reduces, the air that blows in can be fully contacted with the ore, make the physical and chemical reaction of sintering process be strengthened, finally reach the purpose of uniform sintering along the material layer height and width direction.

[0003] Sintering plant to ensure that raw materials in the sintering machine get uniform heating and sintering, usually adopt reasonable distribution mode in the sintering process, to ensure that raw materials in the sintering machine get uniform heating and sintering. However, after the normal commissioning of sintering equipment, the permeability of sintering material layer is often poor, which leads to insufficient combustion, thereby affecting the quality of sintering material.

[0004] In order to improve the permeability of sintering material layer, some technologies propose to install a ventilation oxygenation device to promote combustion after the ignition device of the sintering machine head. These devices improve the physical structure of the material layer, making the generated pores evenly and reasonably distributed in the sintering material layer, so as to optimize the temperature distribution in the material layer and improve the quality of sintered ore. Although there are some ventilation oxygenation devices to promote combustion in the prior art, these devices still have some problems and limitations in practical application. First, these devices usually need an external power source to drive, which increases the complexity and operating cost of the equipment. Second, these devices adopt single-axis rotation, and the arrangement of the punching members arranged on them is close, which causes compaction and compaction problems in the sintering material layer, making it difficult to effectively improve the permeability of the sintering material layer, and further affecting the quality of the sintered ore. Therefore, how to design a ventilation oxygenation device without external power source, with strong pore depth and penetration, and uniform pore distribution, is a problem to be solved in the current field. SUMMARY

[0005] The present application is a ventilation oxygenation device to promote the permeability of sintering material layer. By using the shuttle-shaped teeth arranged on the double rotating rollers, the structure of the material layer can be improved, the permeability of the material layer can be effectively improved, the temperature distribution in the material layer can be optimized, and the quality of the sintered ore can be improved. The present application adopts a non-powered double rotating roller drive, the insertion depth of the material layer is automatically adjustable, which can greatly reduce the operation complexity and reduce manual intervention management, improve the output and economic benefit of the sintering machine.

[0006] The technical scheme adopted is as follows:

[0007] The application discloses a sintering material layer air-permeable oxygen-increasing device, which comprises multiple rows of rotating rollers arranged in parallel and at intervals, each rotating roller is horizontally arranged above the sintering material layer through vertical columns at two ends, and each rotating roller is provided with a cutting tooth, the cutting tooth is shuttle-shaped, the middle part of the cutting tooth is arranged on the corresponding rotating roller, the installation positions of the cutting teeth on the rotating rollers are axially staggered, and the lower end of each cutting tooth is lower than the top surface of the sintering material layer.

[0008] Optionally, the two rows of rotating rollers are arranged in parallel and at intervals.

[0009] Optionally, each rotating roller is rotatably arranged on the vertical columns at two ends through a bearing seat.

[0010] Optionally, an electric actuator is connected between the lower end of the bearing seat of each rotating roller and the vertical column, and the electric actuator is one of a vertical linear push rod, a pneumatic cylinder and a hydraulic cylinder.

[0011] Optionally, the electric actuator controls the extension and retraction amount according to a material layer thickness signal.

[0012] Optionally, the bearing seat of each rotating roller is arranged on the vertical column through an elastic element.

[0013] Optionally, the bearing seat of each rotating roller is arranged in a groove of a channel steel, a vertical through hole is arranged on the channel steel, a vertical threaded hole is arranged on the upper end of the vertical column, the threaded hole is coaxially arranged with the through hole, a vertical threaded adjusting rod is arranged to pass through the through hole and be screwed on the threaded hole, the channel steel is arranged on the upper end of the vertical column, and an elastic element is arranged on the outer periphery of the threaded adjusting rod, and the extension and retraction amount of the elastic element is adjusted by rotating the threaded adjusting rod.

[0014] Optionally, the threaded adjusting rod is connected with a rotating motor, and the rotating motor controls the rotating speed according to the material layer thickness signal.

[0015] Optionally, the elastic element is a spring.

[0016] Optionally, the multiple rows of rotating rollers arranged in parallel and at intervals are arranged behind an ignition device.

[0017] Compared with the prior art, the application has the following beneficial effects:

[0018] 1) The problem that an external power source is needed to drive the air-permeable oxygen-increasing device for promoting combustion is solved, the air-permeable oxygen-increasing device adopted by the application is driven by the transmission force of the device itself, and the complexity and operation cost of the equipment are reduced.

[0019] 2) The problem of insufficient pore depth and penetration of existing ventilation and oxygenation devices is solved. The present application adopts a piercing method with a shuttle tooth structure and elastic elements are arranged on both sides of the rotating roller. The elastic elements are controlled by an electric actuator. The electric actuator adjusts the expansion and contraction amount of the elastic element by obtaining the material layer thickness signal provided by the sintering plant monitoring system, and then adjusts the depth of the inserted material layer. The depth of the inserted material layer is adjusted in real time through the sintering material layer thickness adjustment device, and the penetration is strong, which can effectively improve the permeability of the sintering material layer.

[0020] 3) This solves the problem of uneven pore distribution in existing ventilation and oxygenation devices. The present invention utilizes the inherent transmission force generated by the contact between the shuttle teeth and the material bed for power. The dual rotating rollers rotate at the same speed as the sintering trolley, preventing the formation of furrows and ridges in the sintered material bed caused by excessively fast or slow rotating rollers, which can seriously affect the physical structure of the bed. By improving the physical structure of the bed, the resulting pores are evenly and reasonably distributed throughout the bed, optimizing the temperature distribution within the bed and improving the quality of the sintered ore.

[0021] 4) Solving the problem of poor air permeability in the sintering bed of existing sintering machines, the present invention's ventilation and oxygen enrichment device, located after the ignition device of the sintering machine head, utilizes a dual-rotating roller drilling method to effectively avoid the compaction and depression of the entire material bed caused by the dense arrangement of the punching components during single-axis drilling. The resulting pores are evenly and reasonably distributed throughout the sintering bed, optimizing the temperature distribution within the bed and achieving uniform sintering across the height and width of the bed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above features and technical advantages of the present invention will become clearer and easier to understand by describing the embodiments thereof in conjunction with the following drawings.

[0023] Figure 1 It is a top view of the sintering material bed ventilation and oxygenation device according to an embodiment of the present application.

[0024] Figure 2 It is a front view of the sintering material bed ventilation and oxygenation device according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following describes embodiments of the present invention with reference to the accompanying drawings. Those skilled in the art will recognize that the described embodiments may be modified in various ways or combinations thereof without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of the claims. Furthermore, throughout this specification, the drawings are not drawn to scale, and like reference numerals represent like parts.

[0026] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" should be understood in a broad sense, for example, "connecting" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium. Among them, "fixed connection" refers to the relative position relationship after connection is unchanged. "Rotary connection" refers to the relative rotation after connection. The orientation terms mentioned in the embodiments of the present application, such as "upper", "lower", "inner", "outer" and the like, are only the direction of the drawings, therefore, the orientation terms used are for better, clearer illustration and understanding of the embodiments of the present application, and are not indicative or implied that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0027] The sinter layer air permeability and oxygen increasing device of the embodiment comprises two rows of rotating rollers arranged in parallel and spaced apart, namely a first rotating roller 100 and a second rotating roller 200, which can be arranged behind the ignition device. The first rotating roller is provided with a first cutting tooth 110, and the second rotating roller 200 is provided with a second cutting tooth 210. Moreover, the mounting positions of the first cutting tooth and the second cutting tooth are axially staggered.

[0028] The first cutting tooth 110 and the second cutting tooth 210 have the same structure, which is a shuttle shape gradually shrinking from the middle to the two ends, wherein the middle part is mounted on the corresponding rotating roller. The shuttle structure has good balance and strength distribution, can effectively bear external load and transmit it to the rotating roller. This structure form performs well in resisting pressure, bending and shear force, and has stronger penetration. Different wedge tooth shapes and sizes can be set according to needs, so that it can penetrate the sinter layer, thereby improving the air permeability.

[0029] The first rotating roller and the second rotating roller are horizontally arranged above the sintering material layer through the two ends of the stand 400, and the lower ends of the first cutting teeth 110 and the second cutting teeth 210 are lower than the top surface of the sintering material layer. Through this arrangement, in the process of the mineral material moving with the sintering trolley, the sintering material pushes the first cutting teeth 110 and the second cutting teeth 210, so that the first rotating roller and the second rotating roller rotate, and in the process of the first cutting teeth 110 and the second cutting teeth 210 rotating, the first cutting teeth 110 and the second cutting teeth 210 contact the sintering material at a certain speed, thereby forming holes in the sintering material. Specifically, when the sintering material pushes the lower end of the first cutting teeth 110, the first rotating roller starts to rotate, the lower end of the first cutting teeth 110 rotates upward, the upper end of the first cutting teeth 110 rotates downward, and when it rotates downward, it cuts into the sintering material to form a hole on the surface of the sintering material, and then comes out of the sintering material to continue to rotate upward, while the upper end continues to rotate downward to cut holes. In this way, multiple holes can be cut in the sintering material.

[0030] The embodiment drives the rotating shaft by using the force of the mineral material moving with the sintering trolley, and does not need to separately arrange a driving device, thereby reducing the high energy consumption and equipment maintenance cost caused by motor driving.

[0031] The rotating speed of the rotating roller is consistent with the traveling speed of the sintering trolley, and the rotating speed is relatively slow, thereby avoiding the situation that the rotating speed of the rotating roller is too fast, the cutting teeth do not cut and press the sintering material sufficiently, and the depth of the pores is relatively shallow, so that the pores generated are uniformly and reasonably distributed in the sintering material layer.

[0032] Since the first cutting teeth 110 of the first rotating roller and the second cutting teeth 210 of the second rotating roller are arranged staggered, this arrangement can make the sintering material have more holes without causing certain compaction and subsidence problems of the entire material layer under the relatively large pressure of the first cutting teeth 110 and the second cutting teeth 210. If only one rotating roller is arranged, in order to ensure that there are more holes, the cutting teeth need to be arranged relatively densely, so that in the rotating process of the rotating roller, the dense cutting teeth cut and press the sintering material at the same time, which may cause compaction and subsidence problems.

[0033] In some embodiments, the height of the first rotating roller and the second rotating roller is adjustable. For example, the first rotating roller and the second rotating roller can be rotatably installed on a bearing seat, and an electric actuator such as a vertical linear push rod, a pneumatic cylinder, a hydraulic cylinder, etc. is connected between the lower end of the bearing seat and the stand 400. The height of the first rotating roller and the second rotating roller can be adjusted through the extension and retraction of the electric actuator. The electric actuator can adjust the extension and retraction amount by acquiring the material layer thickness signal provided by the sintering plant monitoring system.

[0034] In some embodiments, both ends of the first and second rotating rollers can be supported on the upper end of the corresponding column 400 by elastic elements 300. For example, the elastic elements can be springs mounted between the columns 400. The specific implementation is various, and only one way is described below. Both ends of the first and second rotating rollers are mounted on bearing seats mounted in the groove of the channel steel 500. A vertical through hole is provided on the channel steel 500, and a vertical threaded hole is provided on the upper end of the column, which is coaxially arranged with the through hole. The threaded adjusting rod 600 is sequentially inserted through the through hole of the channel steel and the threaded hole, and the channel steel is mounted on the upper end of the column 400. The threaded adjusting rod 600 is retained on the upper end of the channel steel, and the channel steel can slide up and down along the threaded adjusting rod. Moreover, a spring 300 is sleeved on the outer periphery of the threaded adjusting rod, the upper end of the spring is in contact with the lower end of the channel steel 500, and the lower end of the spring is in contact with the upper end of the column. The compression amount of the spring 300 can be adjusted by rotating the threaded adjusting rod. Thus, the height of the rotating roller can be adjusted. The threaded adjusting rod can be connected with a rotating motor, the rotating motor can obtain the layer thickness signal provided by the sintering plant monitoring system, and the compression amount of the spring can be adjusted by controlling the rotating speed of the electric push rod, so as to control the height of the first and second rotating rollers, that is, to adjust the depth of insertion into the layer.

[0035] The above description is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sintering material bed ventilation and oxygenation device, characterized in that: It includes multiple rows of parallel and spaced rotating rollers, each of which is horizontally placed above the sintered material layer through columns at both ends. Cutting teeth are installed on each rotating roller. The cutting teeth are shuttle-shaped, and the middle part is installed on the corresponding rotating roller. The installation position of the cutting teeth on each rotating roller is staggered along the axial direction, and the lower end of each cutting tooth is lower than the top surface of the sintered material layer.

2. The sintering material bed ventilation and oxygenation device according to claim 1, characterized in that: It comprises two rows of parallel rotating rollers.

3. The sintering material bed ventilation and oxygenation device according to claim 1, characterized in that: Both ends of each rotating roller are rotatably mounted on the columns at both ends through bearing seats.

4. The sintering material bed ventilation and oxygenation device according to claim 3, characterized in that: An electric actuator is connected between the lower end of the bearing seat of each rotating roller and the column. The electric actuator is one of a vertical linear push rod, an air cylinder, and a hydraulic cylinder.

5. The sintering material bed ventilation and oxygenation device according to claim 4, characterized in that: The electric actuator controls the expansion and contraction amount according to the material layer thickness signal.

6. The sintering material bed ventilation and oxygenation device according to claim 3, characterized in that: The bearing seats of each rotating roller are installed on the column through elastic elements.

7. The sintering material bed ventilation and oxygenation device according to claim 6, characterized in that: The bearing seat of each rotating roller is installed in the groove of the channel steel. A through hole with a vertical axis is provided on the channel steel, and a threaded hole with a vertical axis is provided on the upper end of the column. The threaded hole is coaxially arranged with the through hole. A vertical threaded adjustment rod passes through the through hole and is screwed onto the threaded hole to install the channel steel on the upper end of the column. In addition, an elastic element is sleeved on the outer periphery of the threaded adjustment rod, and the expansion and contraction amount of the elastic element is adjusted by rotating the threaded adjustment rod.

8. The sintering material bed ventilation and oxygenation device according to claim 7, characterized in that: The threaded adjustment rod is connected to a rotary motor, and the rotary motor controls the rotation speed according to a material layer thickness signal.

9. The sintering material bed ventilation and oxygenation device according to claim 7, characterized in that: The elastic element is a spring.

10. The sintering material bed ventilation and oxygenation device according to claim 1, characterized in that: The multiple rows of rotating rollers arranged in parallel and at intervals are arranged behind the ignition device.

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