Secondary oxidation equipment for yellow lead

Abstract

The utility model relates to secondary oxidation equipment for yellow lead, which comprises an oxidation furnace, the oxidation furnace comprises a horizontally arranged oxidation furnace body and a conveying roller arranged in the oxidation furnace body, and one end of the conveying roller is connected with an output shaft of a driving motor; a resistance wire, refractory bricks and heat preservation cotton are sequentially arranged on the outer side of the oxidizing furnace body from inside to outside, a feeding port and an air inlet are formed in the upper portion of the end, away from the driving motor, of the oxidizing furnace body, an exhaust port is formed in the upper portion of the end, close to the driving motor, of the oxidizing furnace body, and a discharging port is formed in the lower portion of the end. According to the secondary oxidation equipment for the yellow lead, the yellow lead powder is conveyed in the horizontal oxidation furnace body through the conveying rollers, meanwhile, the oxidation furnace body is heated through the resistance wire, fresh air is introduced through the air inlet, the secondary oxidation effect is good, and the oxidation efficiency is high. Refractory bricks and heat preservation cotton are arranged outside the resistance wires for heat preservation, and heat loss is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of yellow lead production, and in particular relates to yellow lead secondary oxidation equipment. Background Art

[0002] Yellow lead, whose main component is lead tetraoxide, is a traditional Chinese medicinal material and has also been used as a pigment and for other purposes. During production, pure lead is placed in a container, heated, stir-fried, and oxidized with air. After cooling, it is ground into powder, rinsed with water, and the coarse and fine powders are separated. The fine powder that is rinsed out is then oxidized for 24 hours, ground into fine powder, and sieved. Existing heating furnaces are not ideal for the secondary oxidation of yellow lead powder, requiring multiple heating cycles and resulting in low production efficiency. In response to the above problems, the utility model provides a yellow lead secondary oxidation device with good oxidation effect, high production efficiency, high thermal utilization rate, energy saving and environmental protection. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a yellow lead secondary oxidation device with good oxidation effect, high production efficiency, high heat utilization rate, energy saving and environmental protection.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is:

[0005] A yellow lead secondary oxidation device comprises an oxidation furnace, the oxidation furnace comprising a horizontally arranged oxidation furnace body and a conveying roller arranged inside the oxidation furnace body, one end of the conveying roller is connected to the output shaft of a driving motor; the outer side of the oxidation furnace body is sequentially provided with a resistance wire, a refractory brick and a thermal insulation cotton from the inside to the outside, a feed port and an air inlet are provided at the upper part of the end of the oxidation furnace body away from the driving motor, an exhaust port is provided at the upper part of the end of the oxidation furnace body close to the driving motor, and a discharge port is provided at the lower part.

[0006] As an embodiment of the present invention, it also includes a heat exchange box, in which a heat exchange pipeline is provided, and a second air inlet pipe and a second air outlet pipe corresponding to the heat exchange pipeline are provided on the heat exchange box. A third air inlet pipe and a third air outlet pipe are also provided on the heat exchange box, and the third air inlet pipe is connected to the exhaust port through a pipeline, and the second air outlet pipe is connected to the air inlet through a pipeline.

[0007] As an embodiment of the present invention, a filtering device is further included between the oxidation furnace and the heat exchange box, and the gas flowing out of the exhaust port is filtered by the filtering device.

[0008] As an embodiment of the present utility model, the filtering device includes a filter box, a first air inlet pipe is provided on the side wall of the filter box, a first air outlet pipe is provided on the top, a conical portion is provided at the bottom of the filter box and a discharge pipe is provided at the bottom of the conical portion; an adsorption layer is provided on the upper part of the filter box above the first air inlet pipe; the third air inlet pipe is connected to the first air outlet pipe through a pipeline, and the exhaust port is connected to the first air inlet pipe through a pipeline.

[0009] As an embodiment of the present invention, the adsorption layer includes a support mesh plate fixed horizontally on the upper part of the filter box and activated carbon laid above the support mesh plate.

[0010] As an embodiment of the present invention, the first air inlet pipe is located inside the filter box with the air outlet end facing downward; a wind shield is fixedly provided horizontally below the first air inlet pipe in the filter box.

[0011] As an embodiment of the present invention, the filtering device is a pulse dust collector, which filters the gas through a high-temperature resistant dust bag arranged inside the pulse dust collector.

[0012] As an embodiment of the present invention, the conveying roller is a spiral conveying roller, which is composed of a roller shaft and spiral blades; a material stripping plate is also provided on the roller shaft.

[0013] As an implementation mode of the present invention, the oxidation furnace body is cylindrical and made of 310S stainless steel, and its two ends are sealed by a furnace head made of cast iron.

[0014] As an embodiment of the present invention, a control valve is provided on the discharge pipe, and legs are provided at the bottom of the oxidation furnace body, the filter box and the heat exchange box. The drive motor is a reduction motor fixed on the support.

[0015] The beneficial effects of adopting the above technical solution are:

[0016] The yellow lead secondary oxidation equipment provided by the utility model allows yellow lead powder to be transported within a horizontal oxidation furnace body via a conveying roller, while simultaneously heating the oxidation furnace body via a resistance wire and introducing fresh air through an air inlet, resulting in a good secondary oxidation effect and high oxidation efficiency. Refractory bricks and thermal insulation cotton are provided on the outside of the resistance wire for insulation, thereby reducing heat loss. A heat exchange box is provided to exchange heat between the air exhausted from the oxidation furnace body and the fresh air introduced, thereby improving heat utilization, facilitating the oxidation reaction, and saving energy and protecting the environment. A filter box is provided to filter materials in the air exhausted from the oxidation furnace body, preventing the materials from entering the outside world and causing harm to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the oxidation furnace in the utility model.

[0018] Figure 2 yes Figure 1 A partial enlarged schematic diagram of point A in the middle.

[0019] Figure 3 It is a structural diagram of the filter box in the utility model.

[0020] Figure 4 It is a structural diagram of the heat exchange box in the utility model.

[0021] Figure 5 It is a schematic diagram of the working state of the utility model.

[0022] Among them: 1 oxidation furnace body, 2 conveyor roller, 3 furnace head, 4 drive motor, 5 feed port, 6 discharge port, 7 resistance wire, 8 refractory brick, 9 insulation cotton, 10 exhaust port, 11 air inlet, 12 filter box, 13 tapered part, 14 first air inlet pipe, 15 first air outlet pipe, 16 discharge pipe, 17 support mesh plate, 18 activated carbon, 19 wind shield, 20 heat exchange box, 21 heat exchange pipeline, 22 second air inlet pipe, 23 second air outlet pipe, 24 third air inlet pipe, 25 third air outlet pipe, 26 support, 27 feed plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described clearly and completely below in conjunction with specific embodiments.

[0024] like Figure 1 and Figure 2 The shown embodiment shows a yellow lead secondary oxidation device, which includes an oxidation furnace, the oxidation furnace including a horizontally arranged oxidation furnace body 1 and a conveying roller 2 arranged inside the oxidation furnace body 1, one end of the conveying roller 2 is connected to the output shaft of the driving motor 4; the outer side of the oxidation furnace body 1 is provided with a resistance wire 7, a refractory brick 8 and a thermal insulation cotton 9 in sequence from the inside to the outside, the upper part of the end of the oxidation furnace body 1 away from the driving motor 4 is provided with a feed port 5 and an air inlet 11, the upper part of the end of the oxidation furnace body 1 close to the driving motor 4 is provided with an exhaust port 10, and the lower part is provided with a discharge port 6.

[0025] The yellow lead secondary oxidation equipment transports yellow lead powder within a horizontal oxidation furnace body 1 via conveyor rollers 2. Simultaneously, the oxidation furnace body 1 is heated via a resistance wire 7, and fresh air is introduced through an air inlet 11. This results in a good secondary oxidation effect and high oxidation efficiency. Refractory bricks 8 and insulation cotton 9 are placed outside the resistance wire 7 for insulation, reducing heat loss.

[0026] As a further optimization, Figure 4 and Figure 5As shown, the yellow lead secondary oxidation equipment also includes a heat exchange box 20, which is provided with a heat exchange pipeline 21. The heat exchange box 20 is provided with a second air inlet pipe 22 and a second air outlet pipe 23 corresponding to the heat exchange pipeline 21. The heat exchange box 20 is also provided with a third air inlet pipe 24 and a third air outlet pipe 25. The third air inlet pipe 24 is connected to the exhaust port 10 via a pipeline, and the second air outlet pipe 23 is connected to the air inlet 11 via a pipeline. The heat exchange box 20 is provided to exchange heat between the air exhausted from the oxidation furnace body 1 and the fresh air introduced, thereby improving heat utilization, facilitating the oxidation reaction, and saving energy and being environmentally friendly. The air exhausted from the oxidation furnace body 1 contains a small amount of powder. Fresh air is introduced into the heat exchange pipeline 21, and the air exhausted from the oxidation furnace body 1 is directly introduced into the heat exchange box 20. The powder is deposited on the outer surface of the heat exchange pipeline 21, making it easier to clean it later.

[0027] As a further optimization, the yellow lead secondary oxidation equipment further includes a filtering device disposed between the oxidation furnace and the heat exchange box 20, which filters the materials carried in the gas flowing out of the exhaust port 10. In one embodiment, the filtering device is a pulse dust collector, which filters the gas through a high-temperature resistant dust bag disposed therein.

[0028] As another embodiment, Figure 3 and Figure 5 As shown, the filtering device includes a filter box 12, with a first air inlet pipe 14 disposed on the side wall and a first air outlet pipe 15 disposed on the top. A tapered portion 13 is disposed at the bottom of the filter box 12, and a discharge pipe 16 is disposed at the bottom of the tapered portion 13. An adsorption layer is disposed on the top of the filter box 12 above the first air inlet pipe 14. The third air inlet pipe 24 is connected to the first air outlet pipe 15 via a pipeline, and the exhaust port 10 is connected to the first air inlet pipe 14 via a pipeline. The filter box 12 is provided to filter materials in the air discharged from the oxidation furnace body 1, preventing them from entering the outside world and causing harm to the human body.

[0029] In this embodiment, the adsorption layer includes a support mesh 17 fixed horizontally on the upper part of the filter box 12 and activated carbon 18 laid on the support mesh 17. The support mesh 17 has a dense mesh to prevent the activated carbon 18 from falling.

[0030] As a further optimization, the first air inlet pipe 14 is located inside the filter box 12 and the air outlet end is set downward to promote the powder to settle to the bottom of the filter box 12; the filter box 12 is fixed with a wind shield 19 horizontally below the first air inlet pipe 14. The wind shield 19 has a relatively sparse mesh and is used to reduce the wind speed and improve the dust settling effect.

[0031] The conveying roller 2 is a spiral conveying roller, which consists of a roller shaft and spiral blades. As a further optimization, a material shifting plate 27 is also provided on the roller shaft. The material shifting plate 27 is arranged perpendicular to the axis of the roller shaft and is in the shape of a sheet. It is used to shift the material, improve the turning effect of the material, and promote its secondary oxidation effect.

[0032] In this embodiment, the oxidation furnace body 1 is cylindrical and made of 310S stainless steel, which improves the flow resistance of the oxidation furnace at high temperatures, reduces pitting corrosion, and achieves stability during the material oxidation process. The two ends of the oxidation furnace body 1 are sealed by a cast iron burner 3.

[0033] The discharge pipe 16 is provided with a control valve. The bottoms of the oxidation furnace body 1 , the filter box 12 and the heat exchange box 20 are all provided with supporting legs. The driving motor 4 is a reduction motor fixed on the support 26 .

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A yellow lead secondary oxidation device, characterized in that: The invention comprises an oxidation furnace, wherein the oxidation furnace comprises a horizontally arranged oxidation furnace body (1) and a conveying roller (2) arranged inside the oxidation furnace body (1), one end of the conveying roller (2) being connected to the output shaft of a driving motor (4); a resistance wire (7), a refractory brick (8) and a heat-insulating cotton (9) are sequentially arranged on the outside of the oxidation furnace body (1) from the inside out; a feed port (5) and an air inlet (11) are arranged on the upper part of the end of the oxidation furnace body (1) away from the driving motor (4); an exhaust port (10) is arranged on the upper part of the end of the oxidation furnace body (1) close to the driving motor (4), and a discharge port (6) is arranged on the lower part.

2. The yellow lead secondary oxidation equipment according to claim 1, characterized in that: The heat exchange box (20) further comprises a heat exchange pipe (21) provided in the heat exchange box (20), a second air inlet pipe (22) and a second air outlet pipe (23) corresponding to the heat exchange pipe (21) provided on the heat exchange box (20), and a third air inlet pipe (24) and a third air outlet pipe (25) provided on the heat exchange box (20), wherein the third air inlet pipe (24) is connected to the exhaust port (10) via a pipe, and the second air outlet pipe (23) is connected to the air inlet (11) via a pipe.

3. The yellow lead secondary oxidation equipment according to claim 2, characterized in that: It also includes a filtering device arranged between the oxidation furnace and the heat exchange box (20), and the filtering device is used to filter the gas flowing out of the exhaust port (10).

4. The yellow lead secondary oxidation equipment according to claim 3, characterized in that: The filtering device comprises a filter box (12), a first air inlet pipe (14) is provided on the side wall of the filter box (12), a first air outlet pipe (15) is provided on the top, a tapered portion (13) is provided at the bottom of the filter box (12), and a discharge pipe (16) is provided at the bottom of the tapered portion (13); an adsorption layer is provided on the upper part of the filter box (12) above the first air inlet pipe (14); the third air inlet pipe (24) is connected to the first air outlet pipe (15) through a pipeline, and the exhaust port (10) is connected to the first air inlet pipe (14) through a pipeline.

5. The yellow lead secondary oxidation equipment according to claim 4, characterized in that: The adsorption layer comprises a support mesh plate (17) fixed horizontally on the upper part of the filter box (12) and activated carbon (18) laid above the support mesh plate (17).

6. The yellow lead secondary oxidation equipment according to claim 5, characterized in that: The first air inlet pipe (14) is located inside the filter box (12) with the air outlet end facing downwards; a wind shield (19) is fixedly provided horizontally below the first air inlet pipe (14) in the filter box (12).

7. The yellow lead secondary oxidation equipment according to claim 3, characterized in that: The filtering device is a pulse dust collector, which filters the gas through a high-temperature resistant dust bag arranged inside the pulse dust collector.

8. The yellow lead secondary oxidation equipment according to claim 1, characterized in that: The conveying roller (2) is a spiral conveying roller, consisting of a roller shaft and spiral blades; a material shifting plate (27) is also provided on the roller shaft.

9. The yellow lead secondary oxidation equipment according to claim 1, characterized in that: The oxidation furnace body (1) is cylindrical and made of 310S stainless steel, with both ends sealed by a furnace head (3) made of cast iron.

10. The yellow lead secondary oxidation equipment according to claim 4, characterized in that: A control valve is provided on the discharge pipe (16), and legs are provided at the bottom of the oxidation furnace body (1), the filter box (12), and the heat exchange box (20). The drive motor (4) is a reduction motor fixed on the support (26).

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