Rotary kiln

Abstract

The utility model relates to a rotary kiln furnace, and relates to the technical field of smelting equipment, the rotary kiln furnace comprises a rotary kiln furnace body, overhaul stands are fixedly connected to the two sides of the rotary kiln furnace body, an arc-shaped plate is arranged above the overhaul stands, and the inner arc surface of the arc-shaped plate faces one side of the rotary kiln furnace body; the arc-shaped plates are arranged in two pairs and located on the two sides of the rotary kiln body correspondingly, the same heat exchange coil pipe is fixedly connected between the two arc-shaped plates in the same pair, and a lifting assembly used for driving the heat exchange coil pipe to ascend or descend on the overhauling table is arranged on the overhauling table. An adjusting assembly used for driving the heat exchange coil pipe to move towards the side close to the rotary kiln body or the side away from the rotary kiln body is arranged on the overhauling table. The rotary kiln has the effect of recycling heat dissipated outwards by the rotary kiln.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smelting equipment, and particularly relates to a rotary kiln. BACKGROUND

[0002] The rotary kiln is a kind of rotary calcining kiln widely used in the industries of building materials, metallurgy, chemical engineering, environmental protection and the like, and is mainly used for mechanically, physically or chemically treating solid materials. According to different treated materials, the rotary kiln can be classified into a cement kiln, a metallurgical chemical engineering kiln and a lime kiln and the like.

[0003] In the related art, part of the heat of some rotary kilns is usually dissipated to the atmosphere during long-time smelting, but the heat still has certain recycling value, and therefore the present application provides a rotary kiln capable of recycling the heat. CONTENT OF THE UTILITY MODEL

[0004] In order to recycle the heat dissipated outwardly by the rotary kiln, the present application provides a rotary kiln.

[0005] The present application provides a rotary kiln adopting the following technical scheme:

[0006] The rotary kiln comprises a rotary kiln body, two sides of the rotary kiln body are fixedly connected with maintenance tables, arc-shaped plates are arranged above the maintenance tables, inner arc surfaces of the arc-shaped plates face one side of the rotary kiln body, the arc-shaped plates are arranged in two pairs and are respectively located at two sides of the rotary kiln body, one heat exchange coil is fixedly connected between two arc-shaped plates of the same pair, lifting assemblies for driving the heat exchange coils to ascend or descend on the maintenance tables are arranged on the maintenance tables, and adjusting assemblies for driving the heat exchange coils to move towards one side close to the rotary kiln body or one side away from the rotary kiln body are arranged on the maintenance tables.

[0007] By adopting the above technical scheme, when the rotary kiln works and dissipates heat outwardly, circulating water or other medium can be introduced into the heat exchange coil, and then the position of the heat exchange coil is adjusted by the adjusting assembly and the lifting assembly, so that the heat exchange coil is in the optimal heat absorption position, and thus most of the heat dissipated outwardly by the rotary kiln is absorbed by the medium in the heat exchange coil, thereby the heat dissipated outwardly by the rotary kiln can be recycled.

[0008] Optionally, the lifting assembly comprises a plurality of lifting hydraulic cylinders, the lifting hydraulic cylinders are arranged on the upper end of the maintenance table, and the piston rods of the lifting hydraulic cylinders are fixedly connected to the arc-shaped plates.

[0009] By adopting the above technical scheme, the height of the heat exchange coil can be controlled by the extension and retraction of the lifting hydraulic cylinders, and thus the heat exchange coil is facilitated to be maintained.

[0010] Optionally, the adjusting assembly comprises an adjusting hydraulic cylinder fixedly connected to the maintenance platform, the extending direction of the adjusting hydraulic cylinder is perpendicular to the length direction of the rotary kiln, and the extending end of the adjusting hydraulic cylinder is fixedly connected to the lifting hydraulic cylinder.

[0011] By adopting the technical scheme, the distance between the heat exchange coil and the rotary kiln body can be changed by controlling the extension of the adjusting hydraulic cylinder.

[0012] Optionally, the upper end of the maintenance platform is fixedly connected to a guardrail, and the guardrail is located on the side of the maintenance platform away from the rotary kiln body.

[0013] By adopting the technical scheme, the safety of the maintenance platform can be improved by the guardrail.

[0014] Optionally, the upper portion of the rotary kiln body is provided with a top plate, a fixing assembly for fixing the top plate and the guardrail is arranged between the top plate and the guardrail, a plurality of fans are fixedly connected to the top plate, and the air outlets of the fans are directed to the rotary kiln body.

[0015] By adopting the technical scheme, the upwardly emitted heat can be blocked by the top plate, and the heat can be concentrated by the fans.

[0016] Optionally, the fans are arranged in two rows on the top plate, and the plurality of fans are arranged along the length direction of the rotary kiln body, and the air outlets of the fans are directed to the arc surface of the rotary kiln body.

[0017] By adopting the technical scheme, the heat can be concentrated to the heat exchange coils on the two sides of the rotary kiln body by arranging the fans, and the heat absorption efficiency of the heat exchange coil is further improved.

[0018] Optionally, a guide telescopic rod is fixedly connected between the connecting rod and the arc-shaped plate, and the extending direction of the guide telescopic rod is parallel to the extending direction of the adjusting hydraulic cylinder.

[0019] By adopting the technical scheme, the movement track of the arc-shaped plate can be limited by the guide telescopic rod, and the stability of the movement of the arc-shaped plate is improved.

[0020] Optionally, the fixing assembly comprises a plurality of connecting rods, and the connecting rods are fixedly connected between the top plate and the guardrail.

[0021] By adopting the technical scheme, the top plate and the guardrail can be connected by the plurality of connecting rods, and the top plate can be supported, and the excess heat can be dissipated through the gaps of the connecting rods.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. The heat exchange coil can be adjusted to the optimal heat absorption position by circulating water or other medium into the heat exchange coil, then adjusting the position of the heat exchange coil through the adjusting assembly and the lifting assembly, so that the heat exchange coil absorbs most of the heat emitted by the rotary kiln, thereby recycling the heat emitted by the rotary kiln.

[0024] 2. The heat can be concentrated to the heat exchange coil on both sides of the rotary kiln body by setting a fan, further improving the heat absorption efficiency of the heat exchange coil.

[0025] 3. The height of the heat exchange coil can be controlled by the extension and retraction of the lifting hydraulic cylinder, thereby facilitating the maintenance of the heat exchange coil. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0027] Figure 2 is a schematic diagram of the structure of the fan of the embodiment of the present application.

[0028] BRIEF DESCRIPTION OF DRAWINGS: 1, maintenance platform; 11, guardrail; 12, guide telescopic rod; 2, rotary kiln body; 3, fan; 4, arc plate; 5, heat exchange coil; 6, lifting assembly; 61, lifting hydraulic cylinder; 7, adjusting assembly; 71, adjusting hydraulic cylinder; 8, support table; 9, fixing assembly; 91, connecting rod; 10, top plate. DETAILED DESCRIPTION

[0029] The following will be described in detail in combination with the accompanying Figure 1 - the accompanying Figure 2 The present application will be further described in detail.

[0030] The embodiment of the present application discloses a rotary kiln, referring to Figure 1 and the accompanying Figure 2 , comprising a rotary kiln body 2, the lower ends of the rotary kiln body 2 are fixedly connected with support tables 8 for supporting the rotary kiln body 2. Both sides of the rotary kiln body 2 are provided with maintenance platforms 1, the maintenance platforms 1 are fixedly connected on the support tables 8, and the maintenance platforms 1 are fixedly connected with the rotary kiln body 2 through the support tables 8.

[0031] Arc plates 4 are arranged above the maintenance platforms 1, the arc plates 4 are arranged in two pairs and are located on both sides of the rotary kiln body 2, and the inner arc surfaces of the arc plates 4 face one side of the rotary kiln body 2. The two arc plates 4 of the same pair are respectively located at the two ends of the rotary kiln, and the same heat exchange coil 5 is fixedly connected between the two arc plates 4.

[0032] The maintenance platform 1 is provided with a lifting assembly 6 for driving the heat exchange coil 5 to ascend or descend on the maintenance platform 1, the lifting assembly 6 comprises two lifting hydraulic cylinders 61, and the lifting hydraulic cylinders 61 correspond to the arc-shaped plates 4 one by one. The lifting hydraulic cylinders 61 are arranged on the upper end of the maintenance platform 1, the piston rods of the lifting hydraulic cylinders 61 are fixedly connected to the arc-shaped plates 4, and the extension direction of the lifting hydraulic cylinders 61 is perpendicular to the upper end surface of the maintenance platform 1. Thus, the height of the heat exchange coil 5 can be changed by the extension of the lifting hydraulic cylinders 61.

[0033] The maintenance platform 1 is provided with an adjusting assembly 7 for driving the heat exchange coil 5 to move towards the side close to the rotary kiln body 2 or the side away from the rotary kiln body 2. The adjusting assembly 7 comprises an adjusting hydraulic cylinder 71 fixedly connected to the maintenance platform 1, the extension direction of the adjusting hydraulic cylinder 71 is perpendicular to the extension direction of the lifting hydraulic cylinder 61 and perpendicular to the length direction of the rotary kiln body 2, and the extension end of the adjusting hydraulic cylinder 71 is fixedly connected to the lifting hydraulic cylinder 61.

[0034] The distance between the heat exchange coil 5 and the kiln body can be changed by controlling the extension of the adjusting hydraulic cylinder 71.

[0035] The upper end of the maintenance platform 1 is fixedly connected to a guardrail 11, and the guardrail 11 is located on the side of the maintenance platform 1 away from the rotary kiln body 2. An upper plate 10 is arranged above the rotary kiln body 2, and a fixing assembly 9 for fixing the upper plate 10 and the guardrail 11 is arranged between the upper plate 10 and the guardrail 11. The fixing assembly 9 comprises a plurality of connecting rods 91 fixedly connected between the upper plate 10 and the guardrail 11.

[0036] In order to improve the stability of the movement of the arc-shaped plates 4, a guide telescopic rod 12 is fixedly connected between the connecting rod 91 and the arc-shaped plate 4, and the extension direction of the guide telescopic rod 12 is parallel to the extension direction of the adjusting hydraulic cylinder 71.

[0037] A plurality of fans 3 are fixedly connected to the upper plate 10, and the air outlets of the fans 3 are directed towards the rotary kiln body 2. The fans 3 are arranged in two rows on the upper plate 10, and the plurality of fans 3 are arranged along the length direction of the rotary kiln body 2, and the air outlets of the fans 3 are directed towards the arc surface of the rotary kiln body 2.

[0038] Thus, the heat emitted upwards can be blocked by the upper plate 10, and the heat can be concentrated to the heat exchange coils 5 on both sides of the rotary kiln body 2 by the fans 3.

[0039] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, and thus: any equivalent changes made on the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A rotary kiln comprising a rotary kiln body, characterised in that: The both sides of the rotary kiln body (2) are fixedly connected with an inspection table (1), an arc-shaped plate (4) is arranged above the inspection table (1), the inner arc surface of the arc-shaped plate (4) faces one side of the rotary kiln body (2), the arc-shaped plate (4) is arranged in two pairs and is located at the two sides of the rotary kiln body (2) respectively, the same pair of two arc-shaped plates (4) are fixedly connected with the same heat exchange coil (5), the inspection table (1) is provided with a lifting assembly (6) for driving the heat exchange coil (5) to ascend or descend on the inspection table (1), and the inspection table (1) is provided with an adjusting assembly (7) for driving the heat exchange coil (5) to move towards one side close to the rotary kiln body (2) or one side away from the rotary kiln body (2).

2. A rotary kiln according to claim 1, characterised in that: The lifting assembly (6) comprises a plurality of lifting hydraulic cylinders (61), the lifting hydraulic cylinders (61) are arranged on the upper end of the inspection table (1), and the piston rods of the lifting hydraulic cylinders (61) are fixedly connected to the arc-shaped plates (4).

3. A rotary kiln according to claim 2, wherein: The adjusting assembly (7) comprises an adjusting hydraulic cylinder (71) fixedly connected to the inspection table (1), the extension direction of the adjusting hydraulic cylinder (71) is perpendicular to the length direction of the rotary kiln body (2), and the extension end of the adjusting hydraulic cylinder (71) is fixedly connected to the lifting hydraulic cylinder (61).

4. A rotary kiln according to claim 1, wherein: The upper end of the inspection table (1) is fixedly connected with a guardrail (11), and the guardrail (11) is located on the side of the inspection table (1) away from the rotary kiln body (2).

5. A rotary kiln according to claim 4, wherein: The upper side of the rotary kiln body (2) is provided with a top plate (10), a fixing assembly (9) for fixing the top plate (10) and the guardrail (11) is arranged between the top plate (10) and the guardrail (11), and a plurality of fans (3) are fixedly connected to the top plate (10), and the air outlets of the fans (3) face the rotary kiln body (2).

6. A rotary kiln according to claim 5, wherein: The fans (3) are arranged in two rows on the top plate (10), and the plurality of fans (3) are arranged along the length direction of the rotary kiln body (2), and the air outlets of the fans (3) face the arc surface of the rotary kiln body (2).

7. A rotary kiln according to claim 5, wherein: The fixing assembly (9) comprises a plurality of connecting rods (91), and the connecting rods (91) are fixedly connected between the top plate (10) and the guardrail (11).

8. A rotary kiln according to claim 7, characterised in that: The connecting rods (91) and the arc-shaped plates (4) are fixedly connected with guide extension rods (12), and the extension direction of the guide extension rods (12) is parallel to the extension direction of the adjusting hydraulic cylinder (71).

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