Roller kiln cooling system

Abstract

The utility model discloses a roller way kiln cooling system which comprises a cooling section furnace body, a heat exchange pipeline is arranged in a hearth of the cooling section furnace body, the roller way kiln cooling system further comprises a cooling fan, and a rotating shaft of the cooling fan extends into the hearth of the cooling section furnace body. Cooling blades are installed at the end, located in a hearth of the cooling section furnace body, of the rotating shaft. According to the sagger, on one hand, materials in the sagger can be subjected to heat exchange cooling through the heat exchange pipeline, on the other hand, the cooling fan drives the cooling blades to rotate through the rotating shaft, the airflow speed around the sagger is increased, the cooling efficiency is further improved, and the structure is simple and effective.

Description

Technical Field

[0001] The utility model relates to sintering equipment, in particular to a roller kiln cooling system. Background Art

[0002] At present, roller furnaces are the main equipment for mass sintering of lithium iron phosphate, high nickel ternary, graphite and other lithium battery materials. However, due to the high temperature oxidation characteristics of lithium battery materials, a higher cooling efficiency is required after sintering in the furnace to ensure a lower outlet temperature to prevent the product from being oxidized when it leaves the furnace. In addition, the high material discharge temperature will also cause certain damage to the sensor components of the external circulation line. Therefore, improving the cooling efficiency of the furnace cooling section is the direction of efforts of major equipment manufacturers. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a roller kiln cooling system which has a simple structure and is conducive to improving the cooling efficiency.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A roller kiln cooling system comprises a cooling section furnace body, wherein a heat exchange pipe is arranged in the furnace of the cooling section furnace body, and the roller kiln cooling system further comprises a cooling fan, wherein a rotating shaft of the cooling fan extends into the furnace of the cooling section furnace body, and a cooling blade is installed at one end of the rotating shaft located in the furnace of the cooling section furnace body.

[0006] As a further improvement of the above technical solution: a sealing seat assembly is provided on the temperature-lowering section furnace body, the rotating shaft is passed through the sealing seat assembly, a cavity is provided inside the sealing seat assembly and is connected to an inflation tube.

[0007] As a further improvement of the above technical solution: the sealing seat assembly includes a first sealing seat arranged on the cooling section furnace body and a second sealing seat threadedly connected to the first sealing seat, the cavity is arranged in the second sealing seat, the first sealing seat is provided with a seal and a bearing, and the rotating shaft passes through the cavity, the seal and the bearing.

[0008] As a further improvement of the above technical solution: a pressing sheet and a pressing ring for pressing the sealing member are provided at the end of the second sealing seat.

[0009] As a further improvement of the above technical solution: the sealing member is a polytetrafluoroethylene sealing ring.

[0010] As a further improvement of the above technical solution: the bearing is a zirconia ceramic bearing.

[0011] As a further improvement of the above technical solution: a conveying roller is provided on the furnace body of the cooling section, and the heat exchange pipeline is provided on the upper and lower sides of the conveying roller.

[0012] As a further improvement of the above technical solution: the heat exchange pipe is a spiral fin type water-cooled heat exchange pipe.

[0013] As a further improvement of the above technical solution: a cooling gas channel is provided inside the conveying roller.

[0014] As a further improvement of the above technical solution: the roller kiln cooling system also includes a heating section furnace body, one end of the conveying roller rod is connected to the cooling air source, and the other end of the conveying roller rod is connected to the heating section furnace body.

[0015] Compared with the prior art, the utility model has the following advantages: the roller kiln cooling system disclosed in the utility model can, on the one hand, utilize the heat exchange pipe to perform heat exchange cooling on the materials in the sagger; on the other hand, the cooling fan drives the cooling blades to rotate through the rotating shaft, thereby accelerating the air flow speed around the sagger and further improving the cooling efficiency; the structure is simple and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a main structural schematic diagram of a roller kiln cooling system of the utility model.

[0017] Figure 2 It is a side structural schematic diagram of the cooling fan in the utility model.

[0018] Figure 3 It is a structural schematic diagram of an enlarged sealing seat assembly in the utility model.

[0019] The symbols in the figure represent:

[0020] 1. Cooling section furnace body; 2. Heat exchange pipe; 3. Cooling fan; 31. Rotating shaft; 32. Cooling blades; 4. Sealing seat assembly; 41. Cavity; 42. Pressing sheet; 43. First sealing seat; 44. Second sealing seat; 45. Sealing element; 46. Bearing; 48. Pressing ring; 5. Conveying roller; 6. Inflating pipe; 7. Sagger. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying 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 operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. 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] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Figures 1 to 3 An embodiment of the roller kiln cooling system of the utility model is shown. The roller kiln cooling system of this embodiment includes a cooling section furnace body 1, a heat exchange pipe 2 is arranged in the furnace of the cooling section furnace body 1, and the roller kiln cooling system also includes a cooling fan 3. The rotating shaft 31 of the cooling fan 3 extends into the furnace of the cooling section furnace body 1, and a cooling blade 32 (for example, a fan blade or a wind wheel, which is convenient for adjusting the size of the air volume and the wind receiving area) is installed at one end of the rotating shaft 31 located in the furnace of the cooling section furnace body 1. Preferably, the cooling fan 3 is a variable frequency fan, which is convenient for adjusting the speed.

[0026] When the equipment is running, there is a temperature gradient between the heated material in the sagger 7, the atmosphere in the cooling section furnace body 1, and the cooling medium in the heat exchange pipe 2. The heat in the material will first be dissipated through the sagger 7 to the furnace of the cooling section furnace body 1 with a lower temperature, and then taken away by the cooling medium in the heat exchange pipe 2 through the heat convection heat exchange method. The cooling fan 3 controls the start and stop and adjusts the speed of the cooling blades 32 according to the ambient temperature range in the furnace, thereby improving the heat exchange efficiency for cooling the gas in the furnace of the cooling section furnace body 1.

[0027] Furthermore, in this embodiment, a sealing seat assembly 4 is provided on the temperature-lowering furnace body 1, the rotating shaft 31 is passed through the sealing seat assembly 4, and a cavity 41 is provided inside the sealing seat assembly 4 and connected to a gas charging pipe 6. Protective gas can be charged into the cavity 41 through the gas charging pipe 6 to form a positive pressure, or the gas pressure in the cavity 41 is greater than the gas pressure outside the sealing seat assembly 4, thereby preventing external gas from entering the furnace of the temperature-lowering furnace body 1 through the sealing seat assembly 4, and the structure is reasonable and effective.

[0028] Furthermore, in this embodiment, the sealing seat assembly 4 includes a first sealing seat 43 disposed on the cooling section furnace body 1 and a second sealing seat 44 threadedly connected to the first sealing seat 43, the cavity 41 is disposed in the second sealing seat 44, a sealing member 45 and a bearing 46 are disposed in the first sealing seat 43, and the rotating shaft 31 is penetrated through the cavity 41, the sealing member 45 and the bearing 46. The first sealing seat 43 and the second sealing seat 44 are threadedly connected, which facilitates the disassembly and maintenance of the sealing member 45, the bearing 46 and other components inside the sealing seat assembly 4, and is also conducive to ensuring the sealing performance; the sealing member 45 can be, for example, a commonly used sealing ring, a sealing filler, etc., which fits tightly with the rotating shaft 31 after being squeezed to avoid leakage; the bearing 46 is used to realize the relative rotation of the rotating shaft 31 relative to the sealing seat assembly 4, and can also play a guiding role to ensure the accurate positioning and installation of the rotating shaft 31, and the overall structure is simple and reliable.

[0029] As a preferred embodiment, a pressing sheet 42 and a pressing ring 48 are provided at the end of the second sealing seat 44 for pressing the sealing member 45. When the second sealing seat 44 is tightened, the end of the second sealing seat 44 pushes the pressing sheet 42 and the pressing ring 48 to uniformly press the sealing member 45 at various locations around the circumference. After being pressed, the sealing member 45 is tightly fitted with the rotating shaft 31 to ensure sealing performance.

[0030] As a preferred embodiment, the sealing member 45 is a polytetrafluoroethylene sealing ring, which is resistant to high temperatures, has a long service life and good sealing performance.

[0031] As a preferred embodiment, the bearing 46 is a zirconia ceramic bearing, which is resistant to high temperatures and is not prone to heat generation when rotating at high speeds.

[0032] Furthermore, in this embodiment, a conveying roller 5 is provided on the furnace body 1 of the cooling section, and a heat exchange pipe 2 is provided on the upper and lower sides of the conveying roller 5. The heat exchange pipe 2 is arranged on the upper and lower sides of the conveying roller 5, which is conducive to ensuring that both the upper and lower sides of the sagger 7 can be cooled, and further improves the cooling effect. Preferably, two layers of heat exchange pipes 2 are arranged on the upper side of the conveying roller 5, and only one layer of heat exchange pipes 2 is arranged on the lower side of the conveying roller 5; and the cooling fan 3 is preferably arranged on the upper side of the furnace body 1 of the cooling section, which can reasonably utilize the internal space of the furnace, without increasing the furnace space additionally, and does not interfere with the work of other components in the furnace. Of course, in other embodiments, the cooling fan 3 can also be arranged on the lower side or left and right sides of the furnace body 1 of the cooling section.

[0033] As a preferred embodiment, the heat exchange pipe 2 is a spiral fin type water-cooled heat exchange pipe. The spiral fin type water-cooled heat exchange pipe has a large contact area with the hot air in the furnace and a good heat exchange effect. Of course, in other embodiments, other structural forms of heat exchange pipes can also be used, and the heat exchange medium in the heat exchange pipe 2 can also be other types.

[0034] Furthermore, in this embodiment, a cooling gas channel is provided inside the conveying roller 5. Cooling gas can be input into the conveying roller 5 to perform heat exchange cooling on the material in the sagger 7 simultaneously with the heat exchange pipe 2, further improving the cooling effect.

[0035] Furthermore, in this embodiment, the roller kiln cooling system also includes a heating section furnace body (not shown in the figure), one end of the conveying roller 5 is connected to a cooling gas source (not shown in the figure), and the other end of the conveying roller 5 is connected to the heating section furnace body. The cooling gas enters from one end of the conveying roller 5 of the cooling section furnace body 1, exchanges heat with the sagger 7 when passing through the cooling gas channel, absorbs heat and heats up before entering the heating section furnace body, taking away heat while realizing the utilization of waste heat, thereby reducing the energy consumption of the kiln.

[0036] Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A roller kiln cooling system, comprising a cooling section furnace body (1), wherein a heat exchange pipe (2) is arranged in the furnace of the cooling section furnace body (1), and characterized in that: The roller kiln cooling system also includes a cooling fan (3), the rotating shaft (31) of the cooling fan (3) extending into the furnace of the cooling section furnace body (1), and a cooling blade (32) is installed at one end of the rotating shaft (31) located in the furnace of the cooling section furnace body (1).

2. The roller kiln cooling system according to claim 1 is characterized in that: The cooling section furnace body (1) is provided with a sealing seat assembly (4), the rotating shaft (31) is passed through the sealing seat assembly (4), and a cavity (41) is provided inside the sealing seat assembly (4) and is connected to an inflation tube (6).

3. The roller kiln cooling system according to claim 2 is characterized in that: The sealing seat assembly (4) comprises a first sealing seat (43) arranged on the cooling section furnace body (1) and a second sealing seat (44) threadedly connected to the first sealing seat (43); the cavity (41) is arranged in the second sealing seat (44); a sealing member (45) and a bearing (46) are arranged in the first sealing seat (43); and the rotating shaft (31) is inserted into the cavity (41), the sealing member (45) and the bearing (46).

4. The roller kiln cooling system according to claim 3 is characterized in that: A pressing sheet (42) and a pressing ring (48) for pressing the sealing member (45) are provided at the end of the second sealing seat (44).

5. The roller kiln cooling system according to claim 3 is characterized in that: The sealing element (45) is a polytetrafluoroethylene sealing ring.

6. The roller kiln cooling system according to claim 3, characterized in that: The bearing (46) is a zirconia ceramic bearing.

7. The roller kiln cooling system according to any one of claims 1 to 6, characterized in that: The temperature-dropping section furnace body (1) is provided with a conveying roller bar (5), and the heat exchange pipe (2) is arranged on the upper and lower sides of the conveying roller bar (5).

8. The roller kiln cooling system according to any one of claims 1 to 6, characterized in that: The heat exchange pipe (2) is a spiral fin type water-cooled heat exchange pipe.

9. The roller kiln cooling system according to claim 7, characterized in that: A cooling gas channel is provided inside the conveying roller bar (5).

10. The roller kiln cooling system according to claim 9, characterized in that: It also comprises a heating section furnace body, one end of the conveying roller rod (5) is connected to a cooling air source, and the other end of the conveying roller rod (5) is connected to the heating section furnace body.

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