Oxygen inlet structure of rotary furnace

Abstract

The utility model discloses an oxygen inlet structure of a rotary furnace, which belongs to the technical field of rotary furnaces and comprises a rotary furnace body, an air inlet hearth is arranged in the rotary furnace body, an air inlet straight pipe is sleeved at the end of the rotary furnace body, one end of the air inlet straight pipe extends to an inner cavity of the air inlet hearth and is fixedly connected with an air inlet disc, and the other end of the air inlet straight pipe is fixedly connected with an air outlet disc. A plurality of air blowing holes are formed in the end of the air inlet disc, and the side face of the air inlet disc is attached to the inner wall of the air inlet hearth. According to the rotary furnace, when the rotary furnace body rotates, the first gear is driven by the servo motor to rotate, and the air inlet straight pipe and the air inlet disc are driven to rotate in the direction opposite to the rotary furnace body through meshing transmission between the first gear and the second gear, so that air in the air inlet disc is rotationally blown into the air inlet hearth from the air blowing holes; and it is guaranteed that air is evenly guided into the air inlet hearth, oxygen is evenly supplied to the rotary furnace body, and practicability is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of rotary furnace, more particularly to a rotary furnace oxygen gas inlet structure. BACKGROUND

[0002] The rotary kiln is a steel thin-walled cylinder with one to six degrees of slope, the material rotates along the circumference while moving along the axial direction in the kiln to complete physical and chemical changes such as dewatering and decarburization. Fuel is injected into the high-temperature zone from the kiln tail for combustion, and hot flue gas and material flow through the whole kiln in the opposite direction, and finally discharged into the atmosphere through the chimney. When the rotary kiln is in use, air needs to be introduced into the interior to make the fuel burn by using oxygen in the air.

[0003] After searching, the utility model patent with publication number CN221036719U discloses a rotary furnace gas inlet device structure, which comprises a rotary furnace body and a gas inlet hearth, the gas inlet hearth is arranged inside the rotary furnace body, the rotary furnace body is internally assembled with a gas inlet mechanism, the gas inlet mechanism comprises a gas inlet straight pipe and a gas inlet disc, the gas inlet disc is arranged on the left side of the gas inlet hearth, and the gas inlet straight pipe is inserted into the left side end of the rotary furnace body; when the patent is assembled and used, on the one hand, the contact time of the introduced carbon source gas with the material moving along the circumference of the furnace body is longer during the operation of the rotary furnace, the utilization rate of the carbon source is improved, on the other hand, the carbon source gas entering obliquely has a wider coverage of the furnace wall and a reflux process during the flow process, so that the coating is more sufficient and uniform, thereby avoiding the problems of poor contact with the material, uneven coating, low carbon source utilization rate and material accumulation caused by the direct straight pipe introduction of the gas inlet pipe.

[0004] However, the above-mentioned patent still has the following disadvantages: although the air blown in through the air outlet holes on the side of the gas inlet disc can avoid direct blowing of air into the rotary furnace, it is not convenient to ensure that the material in the middle of the furnace body contacts with the oxygen in the air, and the air introduced into the rotary furnace contains moisture, which affects the drying of the material in the rotary furnace if not cleaned. Therefore, we propose a rotary furnace oxygen gas inlet structure. UTILITY MODEL CONTENTS

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a rotary furnace oxygen gas inlet structure.

[0006] To solve the above problems, the utility model adopts the following technical scheme:

[0007] The utility model provides an oxygen gas inlet structure of rotary furnace, including rotary furnace body, the inside of rotary furnace body is provided with gas inlet hearth, the end of rotary furnace body is sleeved with gas inlet straight pipe, one end of gas inlet straight pipe extends to the inner chamber of gas inlet hearth and is fixedly connected with gas inlet disc, a plurality of blowholes are formed in the end of gas inlet disc, the side of gas inlet disc and the inner wall of gas inlet hearth are in close contact, the outside of gas inlet straight pipe is fixedly sleeved with rotating bearing, the outside of rotating bearing is sleeved with two assembly guard plates, two assembly guard plates are respectively sleeved with mounting bolt, and the end of a plurality of mounting bolts is screw mounted to the inside of rotary furnace body, the other end of gas inlet straight pipe is provided with air induction filtering mechanism, and the driving mechanism is arranged on the air induction filtering mechanism.

[0008] As a preferred scheme of the utility model, the air induction filtering mechanism includes a rotary joint fixedly sleeved on the other end of the gas inlet straight pipe, a filter outer box fixedly sleeved on the end of the rotary joint, an air induction pump fixedly installed on the end face of the filter outer box, an input end of the air induction pump extending into the inner chamber of the filter outer box, a filter inner box sleeved in the inner chamber of the filter outer box, the end of the filter inner box extending to the outside of the filter outer box, a first slot seat provided in the inner chamber of the filter inner box, a filter screen sleeved on the inner side of the first slot seat, a second slot seat provided in the inner chamber of the filter inner box, and a water absorption cotton sleeved on the inner side of the second slot seat.

[0009] As a preferred scheme of the utility model, the driving mechanism includes a mounting seat fixedly connected on the end face of the filter outer box, a servo motor fixedly installed on the top face of the mounting seat, a first gear fixedly sleeved on the output shaft of the servo motor, a second gear meshingly driven on the side of the first gear, and the second gear fixedly sleeved on the outside of the gas inlet straight pipe.

[0010] As a preferred scheme of the utility model, a front air permeation hole is formed on one side of the filter inner box, the front air permeation hole is aligned with the input end of the air induction pump, a rear air permeation hole is formed on the other side of the filter inner box, and the rear air permeation hole is aligned with the end of the rotary joint.

[0011] As a preferred scheme of the utility model, a handle is fixedly installed on the end face of the filter inner box.

[0012] As a preferred scheme of the utility model, the inner wall of the filter outer box and the side face of the filter inner box are in close contact.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) The utility model discloses a first gear is rotated through servo motor when rotary furnace body generates rotation, drives the straight pipe of admission and admission disc to rotate in the opposite direction of rotary furnace body through the meshing transmission between first gear and second gear to make the air in admission disc rotate and blow from multiple blowholes to admission hearth, guarantee even introduction air in admission hearth to even oxygen supply in rotary furnace body.

[0015] (2) The utility model discloses a filter inner box is rotated through the air suction pump to the inside chamber of filter outer box, carries out the filtration to the dust in air with the filter screen of filter inner box inside chamber, absorbs the moisture in air with the water absorption cotton, guarantees dry air to be introduced to rotary furnace body, and the practicality is good. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model;

[0017] Figure 2 It is the structure schematic diagram of rotary furnace body of the utility model;

[0018] Figure 3 It is the structure schematic diagram of filter outer box of the utility model;

[0019] Figure 4 It is the split schematic diagram of filter outer box and filter inner box of the utility model.

[0020] Mark explanation in drawing:

[0021] 1, rotary furnace body;2, admission hearth;3, straight pipe of admission;4, admission disc;5, blowhole;6, assembly guard plate;7, mounting bolt;8, rotation bearing;9, air induction filter mechanism;10, rotary joint;11, filter outer box;12, air suction pump;13, filter inner box;14, first slot seat;15, filter screen;16, second slot seat;17, water absorption cotton;18, front air hole;19, rear air hole;20, handle;21, mounting seat;22, servo motor;23, first gear;24, second gear;25, drive mechanism. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] In the description of the utility model, it needs to explain, the term "upper", "lower", "inner", "outer", "top / bottom end" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only is for the convenience of describing the utility model and simplifying the description, and is not indicate or imply that the device or element must have a particular orientation, construct and operate in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the term "first", "second" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the utility model, it needs to explain, unless otherwise expressly provided and limited, the term "installation", "set with", "sleeve set / interface", "connection" and so on, should be understood broadly, for example, "connection", can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0025] Embodiment:

[0026] Please refer to Figures 1-4 , a rotary furnace oxygen inlet structure, including rotary furnace body 1, the inside of rotary furnace body 1 is provided with inlet furnace 2, the end of rotary furnace body 1 is sleeved with inlet straight pipe 3, one end of inlet straight pipe 3 extends to the inner cavity of inlet furnace 2 and is fixedly connected with inlet disc 4, the end of inlet disc 4 is provided with a plurality of air blowing holes 5, the side surface of inlet disc 4 and the inner wall of inlet furnace 2 are in close contact, the outer side of inlet straight pipe 3 is fixedly sleeved with rotating bearing 8, the outer side of rotating bearing 8 is sleeved with two assembly guard plates 6, two assembly guard plates 6 are respectively sleeved with mounting bolts 7, the end of a plurality of mounting bolts 7 is screw-mounted to the inside of rotary furnace body 1, the other end of inlet straight pipe 3 is provided with air guide filtering mechanism 9, and air guide filtering mechanism 9 is provided with driving mechanism 25.

[0027] Specifically, please refer to Figure 1 , Figure 3 and Figure 4 , air guide filtering mechanism 9 includes rotary joint 10 fixedly sleeved on the other end of inlet straight pipe 3, the end of rotary joint 10 is fixedly sleeved with filter outer box 11, the end surface of filter outer box 11 is fixedly installed with air guide pump 12, the input end of air guide pump 12 extends to the inner cavity of filter outer box 11, the inner cavity of filter outer box 11 is sleeved with filter inner box 13, the end of filter inner box 13 extends to the outside of filter outer box 11, the inner cavity of filter inner box 13 is provided with first slot seat 14, the inner side of first slot seat 14 is sleeved with filter screen 15, the inner cavity of filter inner box 13 is provided with second slot seat 16, and the inner side of second slot seat 16 is sleeved with water absorption cotton 17.

[0028] In this embodiment, the dust in the air is filtered by the filter screen 15, and the moisture in the air is absorbed by the water-absorbing cotton 17.

[0029] Specifically, please refer to Figure 3 The driving mechanism 25 includes a mounting seat 21 fixedly connected to the end face of the filter outer box 11, the top surface of the mounting seat 21 is fixedly installed with a servo motor 22, the output shaft of the servo motor 22 is fixedly sleeved with a first gear 23, the side of the first gear 23 is meshingly driven with a second gear 24, and the second gear 24 is fixedly sleeved on the outside of the air inlet straight pipe 3.

[0030] In this embodiment, the servo motor 22 drives the first gear 23 to rotate, and the air inlet straight pipe 3 and the air inlet disc 4 are driven to rotate through the meshing transmission between the first gear 23 and the second gear 24, so that the air in the air inlet disc 4 is rotated and blown from the blowing hole 5 to the inner cavity of the air inlet hearth 2.

[0031] Specifically, please refer to Figure 3 and Figure 4 One side of the filter inner box 13 is provided with a front air permeable hole 18, the front air permeable hole 18 is aligned with the input end of the air suction pump 12, and the other side of the filter inner box 13 is provided with a rear air permeable hole 19, the rear air permeable hole 19 is aligned with the end of the rotary joint 10.

[0032] In this embodiment, the air introduced by the air suction pump 12 can enter the inner cavity of the filter inner box 13 through the front air permeable hole 18, and the air in the inner cavity of the filter inner box 13 can enter the rotary joint 10 through the rear air permeable hole 19.

[0033] Specifically, please refer to Figure 4 The end face of the filter inner box 13 is fixedly installed with a handle 20.

[0034] In this embodiment, the handle 20 is used to hold the filter inner box 13.

[0035] Specifically, please refer to Figure 1 and Figure 4 The inner wall of the filter outer box 11 and the side surface of the filter inner box 13 are in close contact.

[0036] In this embodiment, the stability of the filter inner box 13 inserted into the inner cavity of the filter outer box 11 is ensured.

[0037] Working principle: when using, firstly, the rotary furnace body 1 is driven by the driving device, the material in the rotary furnace body 1 is turned over by the rotation of the rotary furnace body 1, the servo motor 22 drives the first gear 23 to rotate, the air inlet straight pipe 3 and the air inlet disc 4 are driven to rotate in the opposite direction of the rotary furnace body 1 by the meshing transmission between the first gear 23 and the second gear 24, then the air is sucked into the inner cavity of the filter inner box 13 by the air induction pump 12, the dust in the air is filtered by the filter screen 15 in the inner cavity of the filter inner box 13, the moisture in the air is absorbed by the water absorbing cotton 17 in the inner cavity of the filter inner box 13, so that the air becomes dry, finally, the air in the filter inner box 13 enters the inner cavity of the air inlet disc 4 from the rotary joint 10 and the air inlet straight pipe 3, the rotating air inlet disc 4 makes the air rotate and blow from the air blowing hole 5 to the air inlet hearth 2, so that the oxygen in the air contacts with the material in the rotary furnace body 1.

[0038] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An oxygen intake structure for a rotary kiln, comprising a rotary kiln body (1), characterized in that: An air intake furnace (2) is provided inside the rotary furnace body (1), and an air intake straight pipe (3) is sleeved on the end of the rotary furnace body (1). One end of the air intake straight pipe (3) extends to the inner cavity of the air intake furnace (2) and is fixedly connected to an air intake disc (4). A plurality of blowing holes (5) are provided on the end of the air intake disc (4). The side of the air intake disc (4) fits the inner wall of the air intake furnace (2). A rotating bearing (8) is fixedly sleeved on the outer side of the air intake straight pipe (3). Two assembly guard plates (6) are sleeved on the outer side of the rotating bearing (8). The two assembly guard plates (6) are respectively sleeved with mounting bolts (7). The ends of the plurality of mounting bolts (7) are all threadedly mounted on the interior of the rotary furnace body (1). An air intake filter mechanism (9) is provided on the other end of the air intake straight pipe (3), and a driving mechanism (25) is provided on the air intake filter mechanism (9).

2. The oxygen intake structure of a rotary kiln according to claim 1, characterized in that: The induced air filter mechanism (9) includes a rotary joint (10) fixedly sleeved on the other end of the air intake straight pipe (3), the end of the rotary joint (10) is fixedly sleeved with a filter outer box (11), the end surface of the filter outer box (11) is fixedly installed with an induced air pump (12), the input end of the induced air pump (12) extends to the inner cavity of the filter outer box (11), the inner cavity of the filter outer box (11) is sleeved with a filter inner box (13), the end of the filter inner box (13) extends to the outside of the filter outer box (11), the inner cavity of the filter inner box (13) is provided with a first slot seat (14), the inner side of the first slot seat (14) is sleeved with a filter net (15), the inner cavity of the filter inner box (13) is provided with a second slot seat (16), the inner side of the second slot seat (16) is sleeved with absorbent cotton (17).

3. The oxygen intake structure of a rotary kiln according to claim 2, characterized in that: The driving mechanism (25) comprises a mounting seat (21) fixedly connected to the end surface of the filter outer box (11); a servo motor (22) is fixedly mounted on the top surface of the mounting seat (21); an output shaft of the servo motor (22) is fixedly sleeved with a first gear (23); a side portion of the first gear (23) is meshed with a second gear (24); and the second gear (24) is fixedly sleeved on the outside of the intake straight pipe (3).

4. The oxygen intake structure of a rotary kiln according to claim 2, characterized in that: A front air vent (18) is provided on one side of the filter inner box (13), and the front air vent (18) is aligned with the input end of the induced draft pump (12). A rear air vent (19) is provided on the other side of the filter inner box (13), and the rear air vent (19) is aligned with the end of the rotary joint (10).

5. The oxygen intake structure of a rotary kiln according to claim 2, characterized in that: A handle (20) is fixedly mounted on the end surface of the filter inner box (13).

6. The oxygen intake structure of a rotary kiln according to claim 2, characterized in that: The inner wall of the outer filter box (11) and the side surface of the inner filter box (13) are in contact with each other.

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