High-water-content slag brick drying device utilizing industrial waste heat

Abstract

The utility model discloses a high-water-content slag brick drying device utilizing industrial waste heat, which comprises a drying box body, a heat preservation lining is arranged on the inner wall of the drying box body, and a conveying unit enters a drying channel from an inlet of the drying box body and extends out of the drying box body from an outlet; a plurality of air inlet pipe sets arranged at intervals are arranged at the top of the drying box body, one section of each air inlet pipe set communicates with the drying channel, the other end of each air inlet pipe set is arranged outside the drying box body, any air inlet pipe set comprises an inner air inlet pipe and an outer air inlet pipe, and the inner air inlet pipes and the outer air inlet pipes are coaxially arranged through inner supporting plates. The outer air inlet pipe is arranged at one end outside the drying box and communicated with the air collecting box, the air collecting box is communicated with the first hot air pipe, the inner air inlet pipe penetrates through the air collecting box and then is communicated with the second hot air pipe, and air outlets are formed in the two sides of the air inlet pipe set. Air heated through industrial waste heat is blown into the semi-closed drying device, efficient drying of brick materials can be achieved, and compared with the prior art, the drying efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of slag brick manufacturing, in particular to a drying device for high-moisture slag bricks utilizing industrial waste heat. Background Art

[0002] Slag, as a by-product generated during the metal smelting process, has always attracted much attention in terms of its treatment methods. Traditional treatment methods often dispose of it as waste, but this approach not only wastes resources but may also cause environmental pollution. With the development of technology and the enhancement of environmental awareness, people have started to explore more environmentally friendly and economical utilization methods. Among them, using slag for brick making is a very effective way. By mixing slag with other raw materials, not only can bricks of excellent quality be manufactured, but also environmental pollution can be effectively reduced. This utilization method not only saves raw materials but also realizes the recycling of resources, having important economic and environmental double benefits.

[0003] During the brick making process, the moisture content of the brick blank is a key factor. Generally, the initial moisture content of the brick blank usually exceeds 20%. Excessive moisture content will not only increase the energy consumption during the firing process but also affect the final quality of the bricks. Therefore, reducing the moisture content of the brick blank to below 10% is an important step in improving the brick quality and saving energy. Currently, using the waste heat generated during the metal smelting process to dry high-moisture slag bricks is a very effective method. This method can not only reduce energy consumption but also improve production efficiency, and at the same time has less impact on the environment. The utilization of waste heat not only reduces the dependence on traditional energy sources but also lowers the production cost, which is a typical green production method.

[0004] At an earlier time, the applicant had disclosed a device for drying brick materials using waste heat in a utility model patent with the publication number of CN215952151U. In this device, the air in the sealed space is heated through heat exchange tubes to achieve the drying of the brick materials. Although this method can dry a large amount of brick materials at the same time, the drying efficiency is low, and auxiliary heating is often required to better reduce the moisture content in the brick materials. Summary of the Utility Model

[0005] To solve the problems existing in the prior art, the purpose of the utility model is to disclose a drying device for high-moisture slag bricks utilizing industrial waste heat. By blowing air heated by industrial waste heat into a semi-closed drying device, the efficient drying of brick materials can be achieved. Compared with the traditional technology, the drying efficiency is greatly improved.

[0006] To achieve the above effects, the present application discloses a drying device for high-moisture slag bricks using industrial waste heat, which includes a drying box body. The inner wall of the drying box body is provided with a heat-insulating lining. An inner drying channel with a rectangular cross-section is formed inside the heat-insulating lining. The conveying unit enters the drying channel from the entrance of the drying box body, passes through the drying channel, and extends out of the drying box body from the exit of the drying box body. A plurality of spaced air inlet pipe groups are arranged at the top of the drying box body. One end of each air inlet pipe group communicates with the drying channel, and the other end is arranged outside the drying box body. Any of the air inlet pipe groups includes an inner air inlet pipe and an outer air inlet pipe. The inner air inlet pipe is coaxially arranged with the outer air inlet pipe through an inner support plate. The end of the outer air inlet pipe arranged outside the drying box body communicates with the air collecting box. The air collecting box communicates with the first hot air pipe. After passing through the air collecting box, the inner air inlet pipe communicates with the second hot air pipe. Air outlet openings are arranged on both sides of the air inlet pipe group.

[0007] Further, a dust collecting hood is arranged inside the air outlet opening. The dust collecting hood includes an outer frame that is in interference fit with the inner wall of the air outlet opening, and a dust collecting net is arranged inside the outer frame.

[0008] Further, wind shielding curtains are arranged at equal intervals at the entrance and the exit, and the wind shielding curtains are stacked on top of each other in sequence.

[0009] Further, the hot air temperature of the first hot air pipe is higher than the temperature of the second hot air pipe.

[0010] Further, the hot air pressure of the first hot air pipe is lower than the air pressure of the second hot air pipe.

[0011] Further, the cross-section of the air outlet opening is circular, and the cross-section of the dust collecting hood is circular.

[0012] Further, the drying box body is of a flat circular structure, and the drying box body is supported by three groups of support legs.

[0013] Further, the conveying unit includes a plurality of conveying rollers supported by a support frame, and the conveying rollers are arranged either driven or undriven.

[0014] The beneficial effects of the present utility model include:

[0015] The baking device for high-moisture slag bricks disclosed in the present application performs drying treatment through a drying box body. The inner wall of the drying box body has a heat-insulating lining, and a drying channel is formed inside for the conveying and drying of slag bricks. The conveying unit enters from the entrance of the drying box body, passes through the drying channel, and finally extends out of the box body from the exit. A plurality of air inlet pipe groups are arranged at the top of the drying box body. One end of these pipe groups communicates with the drying channel, and the other end is arranged outside the box body.

[0016] The air inlet pipe group is composed of an inner air inlet pipe and an outer air inlet pipe. The inner air inlet pipe is coaxially arranged with the outer air inlet pipe through an inner support plate. One end of the outer air inlet pipe communicates with the air collecting box, which in turn communicates with the first hot air pipe. After passing through the air collecting box, the inner air inlet pipe communicates with the second hot air pipe. Such a design enables hot air to enter the drying channel through the inner air inlet pipe after being distributed by the air collecting box, thereby drying the slag bricks. Air outlets are also provided on both sides of the air inlet pipe group for evenly blowing hot air into the drying channel to ensure the uniformity of the drying effect. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a cross-sectional view of the position of the air inlet pipe group of the present invention.

[0020] Figure 3 It is a cross-sectional view of the position of the air outlet of the present invention.

[0021] Figure 4 It is a schematic diagram of the dust collection hood of the present invention.

[0022] Among them: 1. Drying box body, 2. Heat preservation lining, 3. Drying channel, 4. Conveying unit, 5. Inlet, 6. Outlet, 7. Inner air inlet pipe, 8. Outer air inlet pipe, 9. Inner support plate, 10. Air collecting box, 11. First hot air pipe, 12. Second hot air pipe, 13. Air outlet, 14. Dust collection hood, 15. Wind shielding curtain, 16. Support legs, 41. Support frame, 42. Conveying roller, 141. Outer frame, 142. Dust collection net. Detailed Embodiments

[0023] The following will further elaborate on the detailed embodiments of the present invention in the form of combining with the drawings. However, the following embodiments only list the relatively preferred embodiments, which only serve to explain and help understand the present invention, and should not be construed as a limitation on the present invention.

[0024] Reference Figures 1-4, A drying device for slag bricks with high water content using industrial waste heat, comprising a drying box body 1, the inner wall of the drying box body is provided with a heat-insulating lining 2, and a drying channel 3 with a rectangular cross-section is formed inside the heat-insulating lining. The conveying unit 4 enters the drying channel from the inlet 5 of the drying box body 1, passes through the drying channel 3, and extends out of the drying box body 1 from the outlet 6 of the drying box body 1; several spaced air inlet pipe groups are arranged at the top of the drying box body, one end of each air inlet pipe group communicates with the drying channel, and the other end is arranged outside the drying box body. Any air inlet pipe group includes an inner air inlet pipe 7 and an outer air inlet pipe 8. The inner air inlet pipe 7 is coaxially arranged with the outer air inlet pipe 8 through an inner support plate 9. The end of the outer air inlet pipe arranged outside the drying box body communicates with the air collecting box 10, the air collecting box communicates with the first hot air pipe 11, and the inner air inlet pipe communicates with the second hot air pipe 12 after passing through the air collecting box. Air outlet openings 13 are arranged on both sides of the air inlet pipe group.

[0025] For a high-water-content slag brick baking device disclosed in the above technical solution, drying treatment is carried out through a drying box body. The inner wall of the drying box body has a heat-insulating lining, and a drying channel is formed inside for the conveying and drying of slag bricks. The conveying unit enters from the inlet of the drying box body, passes through the drying channel, and finally extends out of the box body from the outlet. Air inlet pipe groups are arranged at the top of the drying box body. One end of these pipe groups communicates with the drying channel, and the other end is arranged outside the box body. The air inlet pipe group consists of an inner air inlet pipe and an outer air inlet pipe. The inner air inlet pipe is coaxially arranged with the outer air inlet pipe through an inner support plate. One end of the outer air inlet pipe communicates with the air collecting box, the air collecting box communicates with the first hot air pipe, and the inner air inlet pipe communicates with the second hot air pipe after passing through the air collecting box. Such a design enables hot air to be distributed through the air collecting box, enter the drying channel through the inner air inlet pipe, and then dry the slag bricks. Air outlet openings are also arranged on both sides of the air inlet pipe group to evenly blow hot air into the drying channel to ensure the uniformity of the drying effect.

[0026] During use, industrial waste heat enters the air collecting box through the first hot air pipe. The air collecting box distributes the hot air to each outer air inlet pipe, and another part of the hot air is sent into the inner air inlet pipe through the second hot air pipe. The hot air enters the drying channel through the inner air inlet pipe and the outer air inlet pipe to dry the slag bricks. The dried slag bricks are conveyed out of the box body from the outlet of the drying box body by the conveying unit. During the whole process, the hot air circulates in the drying channel and is evenly distributed through the air outlet openings to ensure the consistency of the drying effect.

[0027] As a preferred technical solution, refer to Figure 4A dust collection hood 14 is provided inside the air outlet. The dust collection hood includes an outer frame 141 that is in interference fit with the inner wall of the air outlet, and a dust collection net 142 is arranged inside the outer frame. A dust collection hood 14 is specially designed inside the air outlet, and its main function is to capture and filter dust and impurities that may be generated during the drying process. The dust collection hood is closely fitted with the inner wall of the air outlet through its outer frame 141 to ensure its stable installation and prevent displacement due to the flow of hot air. A dust collection net 142 is arranged inside the outer frame, and this mesh structure can effectively intercept and filter the dust in the hot air, thereby keeping the drying environment clean and the hot air pure.

[0028] Preferably, wind shielding curtains 15 are arranged at equal intervals on the inlet 5 and the outlet 6, and the wind shielding curtains are stacked on top of each other in sequence. At the inlet 5 and the outlet 6 of the drying device, wind shielding curtains 15 arranged at equal intervals are designed. The main function of these wind shielding curtains is to control the air flow and heat distribution inside the drying box body and prevent the ineffective loss of heat. By arranging the wind shielding curtains, the heat loss during the drying process can be effectively reduced, and the thermal efficiency can be improved. The sequential stacking arrangement between the wind shielding curtains enhances the sealing performance of the wind shielding curtains.

[0029] As the most preferred technical solution, the hot air temperature of the first hot air pipe is higher than the temperature of the second hot air pipe. The hot air pressure of the first hot air pipe is lower than the hot air pressure of the second hot air pipe. By setting the hot air temperature of the first hot air pipe 11 to be higher than the temperature of the second hot air pipe 12, and at the same time keeping the hot air pressure of the first hot air pipe lower than the hot air pressure of the second hot air pipe, a series of benefits can be brought. First of all, the higher hot air temperature helps to evaporate the moisture in the slag bricks faster, accelerate the drying process, and improve the drying efficiency. Secondly, the lower air pressure can reduce the impact of the hot air on the materials in the drying channel, reduce energy consumption, and help to maintain the uniform distribution and flow of the materials during the drying process, avoiding uneven drying or damage of the materials due to excessive wind force.

[0030] Generally speaking, as a relatively common choice, the cross-section of the air outlet is circular, and the cross-section of the dust collection hood is circular. The drying box body is of a flat circular structure, and the drying box body is supported by three groups of support legs 16. The conveying unit 4 includes a plurality of conveying rollers 42 supported by a support frame 41, and the conveying rollers are arranged either driven or undriven.

[0031] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A high-water content slag brick drying device using industrial waste heat, characterized in that: The invention comprises a drying box (1), the inner wall of which is provided with a heat-insulating lining (2), the interior of which forms a drying passage (3) having a rectangular cross-section, the conveying unit (4) enters the drying passage from an entrance (5) of the drying box (1), passes through the drying passage (3), and then extends out of the drying box (1) from an exit (6) of the drying box (1); a plurality of air inlet duct groups arranged at intervals are provided on the top of the drying box, one section of the air inlet duct group is communicated with the drying passage, and the other section of the air inlet duct group is communicated with the drying passage. The end is arranged outside the drying box body, and any of the air inlet pipe groups includes an inner air inlet pipe (7) and an outer air inlet pipe (8), the inner air inlet pipe (7) is coaxially arranged with the inner support plate (9) and the outer air inlet pipe (8), one end of the outer air inlet pipe arranged outside the drying box body is communicated with an air collecting box (10), the air collecting box is communicated with a first hot air pipe (11), and the inner air inlet pipe is communicated with a second hot air pipe (12) after passing through the air collecting box, and air outlets (13) are arranged on both sides of the air inlet pipe group.

2. The high-water content slag brick drying device using industrial waste heat according to claim 1 is characterized in that: A dust collecting hood (14) is arranged inside the air outlet, the dust collecting hood comprising an outer frame (141) which is interference fit with the inner wall of the air outlet, and a dust collecting net (142) is arranged inside the outer frame.

3. The high-water content slag brick drying device using industrial waste heat according to claim 1 is characterized in that: The inlet (5) and the outlet (6) are provided with wind shielding curtains (15) arranged at equal intervals, and the wind shielding curtains are stacked one on another.

4. The high-water content slag brick drying device using industrial waste heat according to claim 1 is characterized in that: The hot air temperature of the first hot air pipe is higher than the temperature of the second hot air pipe.

5. The high-water content slag brick drying device using industrial waste heat according to claim 4 is characterized in that: The hot air pressure of the first hot air pipe is lower than the pressure of the second hot air pipe.

6. The high-water content slag brick drying device using industrial waste heat according to claim 2 is characterized in that: The cross section of the air outlet is circular, and the cross section of the dust collecting hood is circular.

7. The high-water content slag brick drying device using industrial waste heat according to claim 1 is characterized in that: The drying box body is an oblate structure and is supported by three groups of supporting legs (16).

8. The high-water content slag brick drying device using industrial waste heat according to claim 1 is characterized in that: The conveying unit (4) comprises a plurality of conveying rollers (42) supported by a support frame (41), wherein the conveying rollers are arranged to be driven or undriven.

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