Broken belt cooling device for rotary hearth furnace

Abstract

The utility model discloses a broken belt cooling device for a rotary hearth furnace, which comprises a supporting base, two movable wheels are respectively arranged at the left part and the right part of the lower end of the supporting base, a driving device is arranged between the two movable wheels at the right part, and a cooling seat is arranged at the upper end of the supporting base. Cooling devices are installed in the middle of the front end and the middle of the rear end of the cooling base, two clamping grooves are formed in the lower inner wall of the cooling base, and a storage device is installed on the lower inner wall of the cooling base. According to the broken belt cooling device for the rotary hearth furnace, the number of the cooling devices is two, and the two cooling devices are installed at the front end and the rear end of the cooling base respectively, so that metallized pellets in the storage box can be evenly sprayed, and then the cooling effect of the device is improved; a plurality of metallized pellets needing to be cooled can be stored at a time through the storage box, the storage box can be conveniently clamped to the cooling base through the clamping blocks at the lower end of the storage box, and the metallized pellets can be conveniently assembled or disassembled.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary hearth furnaces, in particular to a broken belt cooling device for rotary hearth furnaces. Background Art

[0002] The rotary hearth furnace process is a coal-based rapid direct reduction technology. Iron-containing raw materials, reducing coal and other materials are mixed into a carbon-containing mixture in a certain proportion. The wet balls made by the ball maker are screened and distributed. The qualified wet balls are sorted and dried in a chain grate, and then enter the rotary hearth furnace for rapid reduction.

[0003] When the iron content of iron ore powder is above 67%, a direct reduction process of a rotary hearth furnace is adopted, and the product is metallized pellets for use in electric furnaces; when the iron content of ore powder is below 62%, a molten iron reduction process of a rotary hearth furnace-smelting furnace is adopted, and the product is molten iron for steelmaking. Usually, the metallization rate can reach more than 80%, and the metallized pellets can be used as blast furnace raw materials. However, the high-temperature metallized pellets coming out of the rotary hearth furnace need to be cooled to below 200°C before they can be transported and stored in warehouses. Most existing rotary hearth furnaces cool down by spraying cooling, but the cooling device does not spray comprehensively and is inconvenient to move, resulting in certain limitations in its use. In summary, the existing rotary hearth furnace cooling device still has the following problems:

[0004] The cooling device does not spray comprehensively and is inconvenient to move, which leads to certain limitations in its use. Utility Model Content

[0005] The main purpose of the utility model is to provide a broken belt cooling device for a rotary hearth furnace, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A broken belt cooling device for a rotary hearth furnace comprises a supporting base, two movable wheels are installed on the left and right parts of the lower end of the supporting base, a driving device is installed between the two movable wheels on the right part, a cooling seat is installed on the upper end of the supporting base, cooling devices are installed on the middle part of the front end and the middle part of the rear end of the cooling seat, two slots are opened on the lower inner wall of the cooling seat, and a storage device is installed on the lower inner wall of the cooling seat.

[0008] Preferably, the cooling device comprises a water storage tank and a mounting frame, a tank cover is installed at the right upper end of the water storage tank, a water pump is installed at the middle upper end of the water storage tank, a connecting pipe is installed between the water pump and the mounting frame, a plurality of nozzles are installed at the front end of the mounting frame, the mounting frame is installed on the rear inner wall of the cooling seat, and the water storage tank is installed at the middle of the rear end of the cooling seat. The water in the water storage tank is extracted by the water pump and transported to the nozzle on the mounting frame through the connecting pipe, and the nozzle sprays the water on the metallized pellets in the storage tank. In addition, two cooling devices are provided, and they are respectively installed at the front and rear ends of the cooling seat, so that the metallized pellets in the storage tank can be sprayed more evenly, thereby improving the cooling effect of the device.

[0009] Preferably, the storage device comprises a storage box, a box door is installed at the right end of the storage box, a group of through openings are opened at the front and rear ends of the storage box, two clamping blocks are installed at the lower end of the storage box, and the storage box is installed on the lower inner wall of the cooling seat. The storage box can not only store a plurality of metallized pellets to be cooled at one time, but also the clamping block at the lower end of the storage box facilitates the storage box to be clamped on the cooling seat, which is convenient for installation or removal, and the design of the box door on it also facilitates the pouring out of the cooled metallized pellets.

[0010] Preferably, the driving device includes a motor, a driving gear is installed at the rear end of the motor, a driven gear is meshed and connected at the left end of the driving gear, a movable shaft is installed at the front end of the driven gear, the movable shaft is installed between the two movable wheels on the right, and the motor is installed at the right part of the lower end of the support base. The motor drives the driving gear, which in turn drives the driven gear, which in turn drives the movable shaft, thereby rotating the movable wheels on both sides of the movable shaft, so that the device as a whole can be easily moved to a suitable position.

[0011] Preferably, the mounting frame is in a U-shape.

[0012] Preferably, the card block is consistent with the card slot in size and their positions correspond vertically.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. Through the design of the storage box on the storage device, it can not only store multiple metallized pellets that need to be cooled at one time, but also the clamping block at the lower end makes it easy to connect the storage box to the cooling seat, which is convenient for its installation or disassembly. At the same time, the design of the box door on it is also convenient for pouring out the cooled metallized pellets. When the storage box is placed, the water in the water tank is extracted by the water pump on the cooling device and transported to the nozzle on the mounting frame through the connecting pipe. At this time, the nozzle sprays water on the metallized pellets in the storage box. In addition, two cooling devices are provided, and they are respectively installed on the front and rear ends of the cooling seat, so that the metallized pellets in the storage box can be sprayed more evenly, thereby improving the cooling effect of the device.

[0015] 2. The motor on the driving device drives the driving gear, which in turn drives the driven gear, which in turn drives the movable shaft, thereby rotating the movable wheels on both sides of the movable shaft, so that the entire device can be easily moved to a suitable position for cooling the metallized pellets. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a broken belt cooling device for a rotary hearth furnace according to the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of a cooling device of a broken belt cooling device for a rotary hearth furnace according to the utility model;

[0018] Figure 3 It is a schematic diagram of the overall structure of a storage device of a broken belt cooling device for a rotary hearth furnace according to the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the overall structure of a driving device of a broken belt cooling device for a rotary hearth furnace.

[0020] In the figure: 1. support base; 2. cooling device; 3. storage device; 4. driving device; 5. movable wheel; 6. cooling seat; 7. slot; 20. water storage tank; 21. mounting frame; 22. water pump; 23. tank cover; 24. connecting pipe; 25. nozzle; 30. storage tank; 31. opening; 32. tank door; 33. block; 40. motor; 41. driving gear; 42. driven gear; 43. movable shaft. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1-4 As shown, a broken belt cooling device for a rotary hearth furnace comprises a supporting base 1, two movable wheels 5 are installed at the left and right lower ends of the supporting base 1, a driving device 4 is installed between the two movable wheels 5 at the right end, a cooling seat 6 is installed at the upper end of the supporting base 1, a cooling device 2 is installed at the middle of the front end and the middle of the rear end of the cooling seat 6, two slots 7 are opened on the lower inner wall of the cooling seat 6, and a storage device 3 is installed on the lower inner wall of the cooling seat 6.

[0025] The cooling device 2 includes a water tank 20 and a mounting frame 21. A tank cover 23 is installed on the upper right part of the water tank 20. A water pump 22 is installed in the middle of the upper part of the water tank 20. A connecting pipe 24 is installed between the water pump 22 and the mounting frame 21. A plurality of nozzles 25 are installed at the front end of the mounting frame 21. The mounting frame 21 is installed on the rear inner wall of the cooling seat 6. The water tank 20 is installed in the middle of the rear end of the cooling seat 6. The mounting frame 21 is in the shape of a square. The water in the water tank 20 is extracted by the water pump 22 and transported to the nozzle 25 on the mounting frame 21 through the connecting pipe 24. At this time, the nozzle 25 sprays water on the metallized pellets in the storage box 30. In addition, two cooling devices 2 are provided, and they are respectively installed on the front and rear ends of the cooling seat 6, so that the metallized pellets in the storage box 30 can be sprayed more evenly, thereby improving the cooling effect of the device.

[0026] The storage device 3 includes a storage box 30, a box door 32 is installed at the right end of the storage box 30, a group of through openings 31 are opened at the front and rear ends of the storage box 30, two clamping blocks 33 are installed at the lower end of the storage box 30, and the storage box 30 is installed on the lower inner wall of the cooling seat 6; the clamping blocks 33 are consistent in size with the clamping slots 7 and correspond in position up and down. The storage box 30 can not only store multiple metallized pellets that need to be cooled at one time, but also the clamping blocks 33 at the lower end of the storage box 30 are convenient for clamping the storage box 30 on the cooling seat 6, which is convenient for its installation or removal. At the same time, the design of the box door 32 on it is also convenient for pouring out the cooled metallized pellets.

[0027] The driving device 4 includes a motor 40, a driving gear 41 is installed at the rear end of the motor 40, a driven gear 42 is meshed and connected at the left end of the driving gear 41, a movable shaft 43 is installed at the front end of the driven gear 42, and the movable shaft 43 is installed between the two movable wheels 5 on the right, and the motor 40 is installed at the lower right part of the support base 1. The driving gear 41 is driven by the motor 40, and the driving gear 41 drives the driven gear 42, and the driven gear 42 drives the movable shaft 43, thereby rotating the movable wheels 5 on both sides of the movable shaft 43, so that the device as a whole can be easily moved to a suitable position.

[0028] It should be noted that the utility model is a broken belt cooling device for a rotary hearth furnace. First, the motor 40 on the driving device 4 drives the driving gear 41, and the driving gear 41 drives the driven gear 42, and the driven gear 42 drives the movable shaft 43, so that the movable wheels 5 on both sides of the movable shaft 43 rotate, so that the device as a whole can be easily moved to a suitable position for cooling the metallized pellets. Moreover, through the design of the storage box 30 on the storage device 3, it can not only store a plurality of metallized pellets that need to be cooled at one time, but also the clamping block 33 at the lower end thereof is convenient for clamping the storage box 30 on the cooling seat. 6, which is convenient for its installation or disassembly. At the same time, the design of the box door 32 thereon is also convenient for pouring out the cooled metallized pellets. When the storage box 30 is placed, the water in the water storage tank 20 is extracted by the water pump 22 on the cooling device 2 and transported to the nozzle 25 on the mounting frame 21 through the connecting pipe 24. At this time, the nozzle 25 sprays water on the metallized pellets in the storage box 30. In addition, two cooling devices 2 are provided, and they are respectively installed on the front and rear ends of the cooling seat 6, so that the metallized pellets in the storage box 30 can be sprayed more evenly, thereby improving the cooling effect of the device.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A broken belt cooling device for a rotary hearth furnace, comprising a supporting base (1), characterized in that: The left and right lower ends of the support base (1) are both provided with two movable wheels (5), a driving device (4) is provided between the two movable wheels (5) on the right, a cooling seat (6) is provided at the upper end of the support base (1), a cooling device (2) is provided at the middle of the front end and the middle of the rear end of the cooling seat (6), two slots (7) are provided on the lower inner wall of the cooling seat (6), and a storage device (3) is provided on the lower inner wall of the cooling seat (6).

2. The broken belt cooling device for a rotary hearth furnace according to claim 1, characterized in that: The cooling device (2) comprises a water storage tank (20) and a mounting frame (21); a tank cover (23) is installed at the right upper end of the water storage tank (20); a water pump (22) is installed at the middle upper end of the water storage tank (20); a connecting pipe (24) is installed between the water pump (22) and the mounting frame (21); a plurality of nozzles (25) are installed at the front end of the mounting frame (21); the mounting frame (21) is installed on the rear inner wall of the cooling seat (6); and the water storage tank (20) is installed at the middle rear end of the cooling seat (6).

3. The broken belt cooling device for a rotary hearth furnace according to claim 1, characterized in that: The storage device (3) comprises a storage box (30), a box door (32) is installed at the right end of the storage box (30), a group of openings (31) are opened at the front and rear ends of the storage box (30), two blocks (33) are installed at the lower end of the storage box (30), and the storage box (30) is installed on the lower inner wall of the cooling seat (6).

4. The broken belt cooling device for a rotary hearth furnace according to claim 1, characterized in that: The driving device (4) comprises a motor (40), a driving gear (41) is installed at the rear end of the motor (40), a driven gear (42) is meshedly connected at the left end of the driving gear (41), a movable shaft (43) is installed at the front end of the driven gear (42), and the movable shaft (43) is installed between two movable wheels (5) on the right side. The motor (40) is installed at the right part of the lower end of the support base (1).

5. The broken belt cooling device for a rotary hearth furnace according to claim 2, characterized in that: The mounting frame (21) is in the shape of a square.

6. The broken belt cooling device for a rotary hearth furnace according to claim 3, characterized in that: The card block (33) and the card slot (7) have the same size and are located in corresponding positions.

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