Cooling circulation wear-resistant discharging bin

Abstract

The utility model discloses a cooling circulation wear-resistant blanking bin. The discharging bin is in an inverted rectangular pyramid shape, a discharging bin outlet is formed in the bottom of the discharging bin, the discharging bin is defined by four inverted trapezoidal discharging bin walls, a U-shaped water tank is arranged on the outer surface of each discharging bin wall, the U-shaped water tanks are arranged in an S shape from top to bottom, the top ends of the U-shaped water tanks are communicated with a circulating water inlet pipeline, and the bottom ends of the U-shaped water tanks are communicated with a circulating water outlet pipeline. The circulating water inlet pipeline and the circulating water outlet pipeline are jointly communicated with a circulating water tank, wear-resistant strip groups are arranged on the inner surface of each blanking bin wall and comprise transverse wear-resistant strip groups and vertical wear-resistant strip groups, the transverse wear-resistant strip groups are uniformly arranged along the central axis of the inner surface of the blanking bin, and the vertical wear-resistant strip groups are uniformly arranged along the central axis of the inner surface of the blanking bin. And the vertical wear-resistant strip groups are vertical to the transverse wear-resistant strip groups and are paved on the residual space of the inner surface of the blanking bin. The wear resistance of the blanking bin wall is improved, cooling circulation of the blanking bin wall is achieved, potential safety hazards are reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum ash processing equipment, in particular to a cooling circulation wear-resistant lower bin. Background Art

[0002] Aluminum ash is produced in all aluminum melting processes such as aluminum electrolysis and aluminum (including recycled aluminum) processing. Its sources can be divided into aluminum ash produced in aluminum electrolysis smelting, aluminum ash in aluminum casting, and aluminum ash in recycled aluminum processing. Aluminum ash is prone to produce high-risk chemicals such as ammonia, hydrogen fluoride, and cyanide during its production and disposal. In recent years, facing the increasingly severe environmental situation, the disposal of hazardous waste aluminum ash in the aluminum industry has become a focus issue in the industry.

[0003] At present, the domestic and foreign technologies for the disposal of aluminum ash are mainly divided into wet and pyrolysis. The pyrolysis is generally mixed with limestone in a certain ratio to produce calcium aluminate, and its products can be sold as refined slag. However, the pyrolysis process uses natural gas to heat up the rotary kiln to 1300°C. If the residence time is long, the material temperature will be too high and red. When passing through the lower bin, a large amount of high-temperature material will hit the surrounding wall panels of the lower bin. In the long run, it will cause the lower bin wall panels to turn red and the surrounding wall panels to wear through. Therefore, there is an urgent need for a lower bin design that can be cooled externally and wear-resistant internally. Utility Model Content

[0004] The utility model aims to provide a cooling cycle wear-resistant lower material bin with wear-resistant inner wall of the lower material bin and cooling cycle realized by the lower material bin wall in view of the deficiencies in the prior art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a cooling circulation wear-resistant lower material bin, including a rotary kiln, a rotary kiln head cover and a lower material bin, the lower material bin is in the shape of an inverted quadrangular pyramid, a lower material bin outlet is provided at the bottom of the lower material bin, and the lower material bin is formed by four inverted trapezoidal lower material bin walls;

[0006] A U-shaped water trough is provided on the outer surface of each lower silo wall, and the U-shaped water trough is arranged in an S shape from top to bottom. The top of the U-shaped water trough is connected to a circulating water inlet pipeline, and the bottom of the U-shaped water trough is connected to a circulating water outlet pipeline. The circulating water inlet pipeline and the circulating water outlet pipeline are connected to a circulating water tank together. A control valve is provided in the circulating water inlet pipeline. The circulating water inlet pipeline extends into the bottom of the circulating water tank and is provided with a water pump.

[0007] The inner surface of each lower silo wall is provided with a wear-resistant strip group, which is divided into a transverse wear-resistant strip group and a vertical wear-resistant strip group. The transverse wear-resistant strip group is evenly arranged along the central axis of the inner surface of the lower silo, and the vertical wear-resistant strip group is perpendicular to the transverse wear-resistant strip group and covers the remaining space on the inner surface of the lower silo.

[0008] It needs to be further explained that since the most concentrated part of the high-temperature material falling through the rotary kiln to the lower silo wall is located at the central axis position of the lower silo wall, a transverse wear-resistant strip group is provided to reduce the wear of the lower silo wall by the high-temperature material. At the same time, since a large amount of high-temperature material is easily decomposed into small fragments after free fall impact, in order to reduce the accumulation of small fragments remaining on the lower silo wall, vertical wear-resistant strip groups are provided on both sides of the transverse wear-resistant strip group to reduce the accumulation of small fragments on both sides.

[0009] Preferably, the wear-resistant strip group is formed by a plurality of wear-resistant strips arranged in equal combination.

[0010] Preferably, the spacing between the wear-resistant strips is ≤50 mm, the diameter of the wear-resistant strips is 32 mm≤65 mm, and the length of the wear-resistant strips is ≤1 m.

[0011] Preferably, the wear-resistant strip is round steel.

[0012] Preferably, the width of the U-shaped sink is 150㎜≤200㎜.

[0013] Compared with the prior art, the utility model has the following advantages: by arranging a wear-resistant strip group inside the lower silo wall, the wear of the lower silo wall by high-temperature materials is reduced, and the coordinated use of the horizontal wear-resistant strip group and the vertical wear-resistant strip group reduces the accumulation of small debris and reduces the number of maintenance and cleaning times; by arranging a U-shaped water tank on the outer surface of the lower silo wall and connecting it to a circulating water tank, the lower silo wall is continuously cooled, reducing the high-temperature softening of the lower silo wall by high-temperature materials, preventing the lower silo wall from being penetrated by high temperature to form a safety hazard, and extending the service life of the lower silo. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the outer surface of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the inner surface of the utility model.

[0016] Among them, 1-rotary kiln, 2-rotary kiln head cover, 3-lower silo, 31-lower silo outlet, 32-lower silo wall, 33-U-shaped water tank, 41-circulating water tank, 42-circulating water inlet pipeline, 43-circulating water outlet pipeline, 44-control valve, 45-water pump, 51-transverse wear-resistant strip group, 52-vertical wear-resistant strip group. DETAILED DESCRIPTION

[0017] The present invention is further explained below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0018] like Figure 1 to Figure 2 A cooling cycle wear-resistant lower material bin 3 shown in the figure comprises a rotary kiln 1, a rotary kiln head cover 2 and a lower material bin 3, the lower material bin 3 is in the shape of an inverted quadrangular pyramid, a lower material bin outlet 31 is provided at the bottom of the lower material bin 3, and the lower material bin 3 is formed by four inverted trapezoidal lower material bin walls 32;

[0019] A U-shaped water trough 33 is provided on the outer surface of each lower silo wall 32, wherein the width of the U-shaped water trough 33 is 150 mm ≤ ≤ 200 mm, and the U-shaped water trough 33 is arranged in an S shape from top to bottom, and the top of the U-shaped water trough 33 is connected to a circulating water inlet pipeline 42, and the bottom of the U-shaped water trough 33 is connected to a circulating water outlet pipeline 43, and the circulating water inlet pipeline 42 and the circulating water outlet pipeline 43 are connected to a circulating water tank 41 together, and a control valve 44 is provided in the circulating water inlet pipeline 42, and the circulating water inlet pipeline 42 extends into the bottom of the circulating water tank 41 and is provided with a water pump 45;

[0020] The inner surface of each lower silo wall 32 is provided with a wear-resistant strip group, which is formed by a plurality of wear-resistant strips arranged and combined evenly, the spacing between the wear-resistant strips is ≤50㎜, the diameter of the wear-resistant strips is 32㎜≤65㎜, the length of the wear-resistant strips is ≤1m, the wear-resistant strips are round steel, and the wear-resistant strip group is divided into a transverse wear-resistant strip group 51 and a vertical wear-resistant strip group 52. The transverse wear-resistant strip group 51 is evenly arranged along the central axis of the inner surface of the lower silo 3, and the vertical wear-resistant strip group 52 is perpendicular to the transverse wear-resistant strip group 51 and covers the remaining space on the inner surface of the lower silo 3.

[0021] Working principle: Aluminum ash becomes high-temperature material after passing through the rotary kiln 1, and enters the lower silo 3 from the end of the rotary kiln 1 through free fall. The high-temperature material becomes small fragments when passing through the horizontal wear-resistant strips. The small fragments are dispersed to the two ends of the horizontal wear-resistant strip group 51 and are blocked by the vertical wear-resistant strip group 52 to continue to move downward into the lower silo outlet 31. During the whole process, the water pump 45 in the circulating water tank 41 continuously presses cooling water into the circulating water inlet pipe 42, cools the lower silo wall 32 through the U-shaped water tank 33, and returns to the circulating water tank 41 through the circulating water outlet pipe 43, completing the continuous cooling of the lower silo wall 32.

[0022] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A cooling cycle wear-resistant material bin, comprising a rotary kiln, a rotary kiln head cover and a material bin, wherein the material bin is in the shape of an inverted quadrangular pyramid, and a material bin outlet is provided at the bottom of the material bin, characterized in that: The lower material bin is formed by enclosing four inverted trapezoidal lower material bin walls; A U-shaped water trough is provided on the outer surface of each lower silo wall, and the U-shaped water trough is arranged in an S shape from top to bottom. The top of the U-shaped water trough is connected to a circulating water inlet pipeline, and the bottom of the U-shaped water trough is connected to a circulating water outlet pipeline. The circulating water inlet pipeline and the circulating water outlet pipeline are connected to a circulating water tank together. A control valve is provided in the circulating water inlet pipeline. The circulating water inlet pipeline extends into the bottom of the circulating water tank and is provided with a water pump. The inner surface of each lower silo wall is provided with a wear-resistant strip group, which is divided into a transverse wear-resistant strip group and a vertical wear-resistant strip group. The transverse wear-resistant strip group is evenly arranged along the central axis of the inner surface of the lower silo, and the vertical wear-resistant strip group is perpendicular to the transverse wear-resistant strip group and covers the remaining space on the inner surface of the lower silo.

2. The cooling cycle wear-resistant lower silo according to claim 1, characterized in that: The wear-resistant strip group is formed by a plurality of wear-resistant strips arranged and combined in an even manner.

3. The cooling cycle wear-resistant lower silo according to claim 2, characterized in that: The spacing between the wear-resistant strips is ≤50mm, the diameter of the wear-resistant strips is 32mm≤65mm, and the length of the wear-resistant strips is ≤1m.

4. The cooling cycle wear-resistant lower silo according to claim 1, characterized in that: The wear-resistant strip is round steel.

5. The cooling cycle wear-resistant lower silo according to claim 1, characterized in that: 150㎜≤The width of the U-shaped sink is ≤200㎜.

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