Compensation device for thermal expansion amount of hot air duct of lithium mineral roasting rotary kiln

Abstract

The utility model discloses a compensation device for thermal expansion amount of hot air ducts of a lithium mineral roasting rotary kiln, which is arranged between a first hot air duct and a second hot air duct which are discontinuous and adjacent, and comprises a corrugated pipe, the two ends of the corrugated pipe are fixedly connected with the ends, close to each other, of the first hot air duct and the second hot air duct. A guide plate is arranged on the inner side of the corrugated pipe; and striker plates are arranged between one end of the corrugated pipe and the inner side of the first hot air duct and between the other end of the corrugated pipe and the inner side of the second hot air duct. According to the utility model, the corrugated pipe wrinkles extend along the folding direction, and the thermal expansion amount of the hot air duct formed by the first hot air duct and the second hot air duct can be compensated, so that the phenomenon that cracks are generated in the weld joints of the hot air duct due to inconsistent thermal expansion amounts of the barrel body and the hot air duct of the lithium mineral roasting acidification rotary kiln can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium mineral acidification roasting rotary kilns, and in particular relates to a compensation device for thermal expansion of a hot air duct of a lithium mineral roasting rotary kiln. Background Art

[0002] At present, lithium mineral acidification and roasting rotary kiln is widely used in the lithium salt processing industry. Its main structure is the cylinder and the hot air duct inside it, and the cylinder and the hot air duct are connected by welding. During operation, hot air continuously passes through the hot air duct to accelerate the acidification of the material. However, due to the inconsistency in material and thickness between the cylinder and the hot air duct, the thermal expansion of the two after heating is often inconsistent. Specifically, the thermal expansion of the cylinder is greater than the thermal expansion of the hot air duct, which causes cracks in the hot air duct weld. Utility Model Content

[0003] In order to overcome the defects of the prior art, the utility model provides a compensation device for the thermal expansion of a hot air duct of a lithium mineral roasting rotary kiln, which can avoid cracks at the hot air duct weld.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A compensation device for thermal expansion of a hot air duct of a lithium mineral roasting rotary kiln, which is arranged between a discontinuous and adjacent first hot air duct and a second hot air duct, and the compensation device for thermal expansion of a hot air duct of a lithium mineral roasting rotary kiln comprises:

[0006] The two ends of the bellows are respectively fixedly connected to the first hot air duct and the second hot air duct at one end close to each other.

[0007] The beneficial effect of adopting the above technical solution is that the thermal expansion of the hot air duct composed of the first hot air duct and the second hot air duct can be compensated by stretching the corrugated sheet of the bellows along the folding direction, which is beneficial to prevent the phenomenon that cracks appear in the hot air duct weld of the lithium mineral roasting and acidification rotary kiln due to inconsistent thermal expansion of the cylinder and the hot air duct.

[0008] In one embodiment, two ends of the corrugated pipe are fixedly connected to the inner side of the first hot air duct and the inner side of the second hot air duct respectively.

[0009] The beneficial effect of adopting the above technical solution is that the bellows can compensate for the thermal expansion on the inner side of the hot air duct composed of the first hot air duct and the second hot air duct.

[0010] In one embodiment, the bellows is welded to connect the first hot air duct and the second hot air duct.

[0011] The beneficial effect of adopting the above technical solution is that the bellows is welded to connect the first hot air duct and the second hot air duct, so that the bellows is stably and non-detachably installed on the first hot air duct and the second hot air duct.

[0012] In one embodiment, a guide plate is provided inside the bellows.

[0013] The beneficial effect of adopting the above technical solution is that the guide plate on the inner side of the bellows can transport the material inside the bellows forward along the plate surface of the guide plate to prevent the material from accumulating in the waves of the bellows, and at the same time prevent the material from directly contacting the compensator such as the bellows, thereby effectively preventing the material from wearing the compensator such as the bellows.

[0014] In one embodiment, one end of the guide plate is fixedly connected to the first hot air duct or the second hot air duct.

[0015] The beneficial effect of adopting the above technical solution is that one end of the guide plate is fixedly connected to the first hot air duct or the second hot air duct, which can not only fix the guide plate, but also avoid interference of the guide plate on the compensation of the bellows.

[0016] In one embodiment, a material blocking plate is provided between one end of the bellows and the inner side of the first hot air duct and between the other end of the bellows and the inner side of the second hot air duct.

[0017] The beneficial effect of adopting the above technical solution is that the material blocking plate can block the material from falling from the two ends of the bellows to the channel of the cylinder, so as to prevent the material from flowing from the two ends of the bellows to the cylinder.

[0018] In one embodiment, the baffle plate and the first hot air duct, the baffle plate and the corrugated pipe, and the baffle plate and the second hot air duct are all fixedly connected.

[0019] The beneficial effects of adopting the above technical solution are: the baffle plate and the first hot air duct, the baffle plate and the corrugated pipe, and the baffle plate and the second hot air duct are all fixedly connected, so that the baffle plate is stably fixed at both ends of the corrugated pipe to stably block the material from falling from the two ends of the corrugated pipe into the channel of the cylinder.

[0020] In one embodiment, the baffle plate and the first hot air duct, the baffle plate and the corrugated pipe, and the baffle plate and the second hot air duct are all connected by welding.

[0021] The beneficial effects of the utility model are:

[0022] By extending the corrugated sheet of the bellows in the folding direction, the thermal expansion of the hot air duct composed of the first hot air duct and the second hot air duct can be compensated, which is helpful to prevent the phenomenon of cracks in the hot air duct weld due to inconsistent thermal expansion of the cylinder and the hot air duct in the lithium mineral roasting and acidification rotary kiln. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0024] in:

[0025] Figure 1 A schematic diagram of the structure of a rotary kiln for acidification and roasting of lithium minerals is shown;

[0026] Figure 2 The structural schematic diagram of the utility model is shown;

[0027] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0028] Reference numerals:

[0029] 1-cylinder, 2-hot air duct, 3-first hot air duct, 4-guide plate, 5-bellows, 6-blocking plate, 7-second hot air duct. DETAILED DESCRIPTION

[0030] The utility model will be further described below in conjunction with the accompanying drawings.

[0031] The utility model provides a compensation device for thermal expansion of hot air duct of lithium mineral roasting rotary kiln, such as Figure 1 and Figure 2 As shown, it is arranged between the discontinuous and adjacent first hot air duct 3 and the second hot air duct 7, and the compensation device for the thermal expansion of the hot air duct of the lithium mineral roasting rotary kiln includes:

[0032] The bellows 5 has two ends fixedly connected to the first hot air duct 3 and the second hot air duct 7 respectively.

[0033] It can be understood that by stretching the corrugated sheet of the bellows 5 in the folding direction, the thermal expansion of the hot air duct 2 composed of the first hot air duct 3 and the second hot air duct 7 can be compensated, which is helpful to prevent the phenomenon that cracks appear in the weld of the hot air duct 2 due to inconsistent thermal expansion of the cylinder 1 and the hot air duct 2 in the lithium mineral roasting and acidification rotary kiln.

[0034] In one embodiment, two ends of the bellows 5 are fixedly connected to the inner side of the first hot air duct 3 and the inner side of the second hot air duct 7 respectively.

[0035] It can be understood that the bellows 5 can compensate for the thermal expansion inside the hot air duct 2 composed of the first hot air duct 3 and the second hot air duct 7 .

[0036] In one embodiment, the bellows 5 is welded to connect the first hot air channel 3 and the second hot air channel 7 .

[0037] It can be understood that the bellows 5 is connected to the first hot air duct 3 and the second hot air duct 7 by welding, so that the bellows 5 is firmly and non-detachably installed on the first hot air duct 3 and the second hot air duct 7 .

[0038] In one embodiment, a guide plate 4 is disposed inside the bellows 5 .

[0039] It can be understood that the guide plate 4 on the inner side of the bellows 5 can transport the material inside the bellows 5 forward along the plate surface of the guide plate 4 to prevent the material from accumulating in the waves of the bellows 5, and at the same time prevent the material from directly contacting the compensator such as the bellows 5, thereby effectively preventing the material from wearing the compensator such as the bellows 5.

[0040] It should be noted that the shape and size of the guide plate 4 need to be sufficient to completely block the inner side of the bellows 5 to prevent the material from entering the channel of the cylinder 1 from the side of the bellows 5 .

[0041] In one embodiment, one end of the guide plate 4 is fixedly connected to the first hot air duct 3 or the second hot air duct 7 .

[0042] It is understandable that one end of the guide plate 4 is fixedly connected to the first hot air duct 3 or the second hot air duct 7 , which can not only fix the guide plate 4 but also prevent the guide plate 4 from interfering with the compensation of the bellows 5 .

[0043] It should be noted that the guide plate 4 and the first hot air duct 3 or the second hot air duct 7 can be connected by welding.

[0044] In one embodiment, a baffle plate 6 is provided between one end of the bellows 5 and the inner side of the first hot air duct 3 , and between the other end of the bellows 5 and the inner side of the second hot air duct 7 .

[0045] It can be understood that the material blocking plate 6 can block the material from falling from the two ends of the bellows 5 to the channel of the cylinder 1, so as to prevent the material from flowing from the two ends of the bellows 5 to the cylinder 1.

[0046] In one embodiment, the baffle plate 6 and the first hot air duct 3 , the baffle plate 6 and the corrugated tube 5 , and the baffle plate 6 and the second hot air duct 7 are all fixedly connected.

[0047] It can be understood that the baffle plate 6 and the first hot air duct 3, the baffle plate 6 and the bellows 5, and the baffle plate 6 and the second hot air duct 7 are all fixedly connected so that the baffle plate 6 is stably fixed at both ends of the bellows 5 to stably block the material from falling from both ends of the bellows 5 to the channel of the cylinder 1.

[0048] In one embodiment, the baffle plate 6 and the first hot air duct 3 , the baffle plate 6 and the corrugated tube 5 , and the baffle plate 6 and the second hot air duct 7 are all connected by welding.

[0049] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0050] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments, and other arrangements may be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the features described in the various dependent claims and herein may be combined in a manner different from that described in the original claims. It may also be understood that the features described in conjunction with the individual embodiments may be used in other described embodiments.

Claims

1. A device for compensating thermal expansion of a hot air duct of a lithium mineral roasting rotary kiln, which is arranged between a first hot air duct (3) and a second hot air duct (7) which are discontinuous and adjacent, and is characterized in that: include: A bellows (5), wherein both ends of the bellows (5) are respectively fixedly connected to one end of the first hot air duct (3) and the second hot air duct (7) which are close to each other.

2. The device for compensating thermal expansion of a hot air duct of a lithium mineral roasting rotary kiln according to claim 1, characterized in that: The two ends of the corrugated tube (5) are respectively fixedly connected to the inner side of the first hot air duct (3) and the inner side of the second hot air duct (7).

3. A device for compensating thermal expansion of a hot air duct of a lithium mineral roasting rotary kiln according to claim 1 or 2, characterized in that: The bellows (5) is welded to connect the first hot air duct (3) and the second hot air duct (7).

4. The device for compensating thermal expansion of a hot air duct of a lithium mineral roasting rotary kiln according to claim 1, characterized in that: A guide plate (4) is arranged on the inner side of the corrugated tube (5).

5. The device for compensating thermal expansion of hot air duct of a lithium mineral roasting rotary kiln according to claim 4, characterized in that: One end of the guide plate (4) is fixedly connected to the first hot air duct (3) or the second hot air duct (7).

6. The device for compensating thermal expansion of a hot air duct of a lithium mineral roasting rotary kiln according to claim 1, characterized in that: A material blocking plate (6) is provided between one end of the bellows (5) and the inner side of the first hot air duct (3), and between the other end of the bellows (5) and the inner side of the second hot air duct (7).

7. The device for compensating thermal expansion of a hot air duct of a lithium mineral roasting rotary kiln according to claim 6, characterized in that: The baffle plate (6) and the first hot air duct (3), the baffle plate (6) and the corrugated pipe (5), and the baffle plate (6) and the second hot air duct (7) are all fixedly connected.

8. The device for compensating thermal expansion of a hot air duct of a lithium mineral roasting rotary kiln according to claim 7, characterized in that: The baffle plate (6) and the first hot air duct (3), the baffle plate (6) and the corrugated pipe (5), and the baffle plate (6) and the second hot air duct (7) are all connected by welding.

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