Multi-section rotary kiln

Abstract

The utility model relates to the technical field of rotary kilns, in particular to a multi-section rotary kiln which comprises a kiln body, an exhaust pipe, a driving assembly and an auxiliary assembly. The exhaust pipe is installed at the top end of the kiln body and communicated with the kiln body, and the inner side of the exhaust pipe is provided with a sealing assembly which is used for exhausting smoke in the kiln body through the exhaust pipe in the using state and sealing the smoke in the exhaust pipe. The driving assembly is arranged at the upper end of the sealing assembly, extends to the outer side of the exhaust pipe and is used for controlling the exhaust pipe in a use state; the auxiliary assembly is installed on the inner side of the exhaust pipe and located below the sealing assembly. When the sealing assembly is driven by the driving assembly to be used in the rotary kiln, communication between the kiln body and the dust removal device is controlled, the situation that the rotary kiln needs to be shut down to adjust communication between the kiln body and the dust removal device is avoided, meanwhile, rising hot air generated by flame combustion in the kiln body drives the fan blades to rotate, and the speed of discharging smoke dust to the dust removal device is increased; and the dust emission efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kilns, in particular to a multi-stage rotary kiln. Background Art

[0002] A rotary kiln refers to a rotating calcining kiln. The operation of a rotary kiln is composed of processes such as gas flow, fuel combustion, heat transfer and material movement.

[0003] In the prior art, a Chinese patent document with authorization publication number CN219713962U discloses a multi-stage drum rotary kiln. The multi-stage drum rotary kiln is provided with a sealing plug. Before the rotary kiln is used, the extension plate is rotated to make the connecting ring leave the matching groove, the sealing plug is removed, and the dust removal device is installed. The smoke generated by the combustion is discharged into the dust removal device through the exhaust pipe, thereby sucking out the smoke and dust generated when the material falls and being discharged. After being processed by the dust removal device, it is discharged into the atmosphere, which can avoid polluting the environment.

[0004] However, when the above solution is used, the machine needs to be stopped to remove and seal the sealing plug, which makes it inconvenient to use. In addition, the use of the sealing plug will also block the connection between the exhaust pipe and the dust removal device, making the connection between the exhaust pipe and the dust removal device more inconvenient. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and propose a multi-stage rotary kiln.

[0006] The technical solution of the utility model is: a multi-stage rotary kiln, comprising a kiln body, an exhaust pipe, a driving assembly and an auxiliary assembly;

[0007] The exhaust pipe is installed at the top of the kiln body and is connected to the kiln body; the inner side of the exhaust pipe is provided with a sealing component for discharging the smoke in the kiln body through the exhaust pipe when in use and sealing it in the exhaust pipe;

[0008] The driving assembly is arranged at the upper end of the closing assembly and extends to the outside of the exhaust pipe for controlling the exhaust pipe in use;

[0009] The auxiliary component is installed on the inner side of the exhaust pipe and is located below the closing component for accelerating the flow velocity of the flue gas when in use.

[0010] Preferably, a flange is provided at the top end of the exhaust pipe, and the flange is bolted to the external dust removal device.

[0011] Preferably, the enclosing assembly includes a vent plate and a baffle;

[0012] The ventilation plate bolts are installed on the inside of the exhaust pipe and are sealed with the inner wall of the exhaust pipe;

[0013] The baffle is rotatably mounted on the inner side of the ventilation plate and is used to close and open the ventilation holes of the ventilation plate when in use.

[0014] Preferably, a limiting groove is provided on the inner side of the ventilation plate near the top end, and when the ventilation plate and the baffle are in a cooperatively installed state, the edge of the baffle is accommodated in the limiting groove.

[0015] Preferably, the driving assembly includes a rotating rod and a rotating disk;

[0016] The rotating rod is rotatably mounted on the exhaust pipe, and one end of the rotating rod extends to the inside of the exhaust pipe and is transmission-connected to the baffle;

[0017] The turntable is mounted on the other end of the rotating rod and is used to control the baffle through the rotating rod when in use.

[0018] Preferably, teeth are installed in a ring array on the upper end surface of the baffle near the edge, and a gear is provided at one end of the rotating rod, and the gear is meshed with the teeth.

[0019] Preferably, a notch is provided at the top of the ventilation plate, and a limiting block is provided at the edge of the upper end surface of the baffle and at the notch, and the side surface of the limiting block contacts the ventilation plate.

[0020] Preferably, the auxiliary assembly includes a fan blade and a stopper;

[0021] The stop bolt is installed on the inside of the exhaust pipe and is located below the closure assembly;

[0022] The fan blade is rotatably mounted on the top of the stopper and is used to rotate when in use to increase the smoke exhaust speed.

[0023] Preferably, the stopper includes a stopper and a mounting rod;

[0024] The blocking block is arranged on the inner side of the exhaust pipe and below the closing assembly;

[0025] The mounting rod is mounted on the outside of the block and is bolted to the inside of the exhaust pipe.

[0026] Preferably, the fan blade includes a blade and a rotating shaft;

[0027] The rotating shaft is rotatably mounted on the top of the blocking block;

[0028] The blade is mounted on the top of the shaft.

[0029] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0030] The utility model drives the closing component by the driving component to control the connection between the kiln body and the dust removal device when the rotary kiln is in use, thereby avoiding the need to stop the rotary kiln to adjust the connection between the kiln body and the dust removal device. At the same time, the rising hot air generated by the flame combustion in the kiln body drives the fan blades to rotate, so that the speed of discharging smoke and dust to the dust removal device is accelerated, thereby improving the smoke and dust emission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a three-dimensional diagram of an embodiment of the present invention.

[0032] Figure 2 This is a schematic diagram of the internal structure of an exhaust pipe in an embodiment of the present invention.

[0033] Figure 3 This is a schematic diagram of the connection structure between the closing component and the driving component in an embodiment of the present utility model.

[0034] Figure 4 This is a schematic structural diagram of a sealing component in an embodiment of the present invention.

[0035] Figure 5 This is a schematic cross-sectional view of a sealing component structure in an embodiment of the present invention.

[0036] Figure 6 This is an exploded schematic diagram of the auxiliary component structure in an embodiment of the present invention.

[0037] Figure numerals: 1. kiln body; 2. exhaust pipe; 3. closing assembly; 31. ventilation plate; 32. baffle; 33. teeth; 34. limit block; 35. limit groove; 4. driving assembly; 41. gear; 42. rotating rod; 43. turntable; 5. flange; 6. fan blade; 61. blade; 62. rotating shaft; 7. block; 71. block; 72. mounting rod. DETAILED DESCRIPTION

[0038] Example 1

[0039] like Figure 1-6 As shown, the utility model proposes a multi-stage rotary kiln, comprising a kiln body 1, an exhaust pipe 2, a drive assembly 4 and an auxiliary assembly;

[0040] The exhaust pipe 2 is installed at the top of the kiln body 1 and is connected to the kiln body 1; the inner side of the exhaust pipe 2 is provided with a sealing component 3 for discharging the flue gas in the kiln body 1 through the exhaust pipe 2 and sealing it in the exhaust pipe 2 when in use; wherein, the top of the exhaust pipe 2 is provided with a flange 5, and the flange 5 is bolted to the external dust removal device to facilitate and quickly connect the flange 5 to the external dust removal device during installation, and to connect the exhaust pipe 2 to the external dust removal device to transport the smoke into the dust removal device, so that the smoke is discharged after purification.

[0041] The driving assembly 4 is arranged at the upper end of the closing assembly 3 and extends to the outside of the exhaust pipe 2 for controlling the exhaust pipe 2 in use;

[0042] The auxiliary component is installed inside the exhaust pipe 2 and below the closing component 3 for accelerating the flow velocity of the flue gas when in use.

[0043] In this embodiment, the exhaust pipe 2 is connected and communicated with the external dust removal device through the flange 5, and the driving component 4 drives the middle part of the closing component 3 to rotate, so that the closing component 3 is opened and closed. When the closing component 3 is opened, the smoke is transported along the inside of the exhaust pipe 2 and through the closing component 3 to the external dust removal device. During the flow of smoke inside the exhaust pipe 2, the auxiliary component is driven to run, so that the top part of the auxiliary component rotates due to the flow of smoke, thereby increasing the flow speed of smoke in the exhaust pipe 2. At the same time, the flame appearing on the inside of the kiln body 1 is blocked by the auxiliary component to prevent the flame from following the smoke to move to the inside of the exhaust pipe 2 and burning.

[0044] Example 2

[0045] like Figure 1-5 As shown, the multi-stage rotary kiln proposed by the present invention, compared with the first embodiment, in this embodiment, the closing component 3 includes a ventilation plate 31 and a baffle 32;

[0046] The ventilation plate 31 is bolted to the inside of the exhaust pipe 2 and is sealed to the inner wall of the exhaust pipe 2 to prevent leakage between the ventilation plate 31 and the exhaust pipe 2 when the ventilation plate 31 is closed during use;

[0047] The baffle 32 is rotatably installed on the inner side of the ventilation plate 31, wherein the ventilation holes of the ventilation plate 31 and the baffle 32 are the same size. When the ventilation holes of the ventilation plate 31 are opened or closed, the baffle 32 is rotated on the ventilation plate 31 so that the ventilation plate 31 and the baffle 32 are overlapped or staggered, so that the baffle 32 controls the opening and closing of the ventilation holes of the ventilation plate 31, and opens and closes the exhaust pipe 2 to the external dust removal device.

[0048] A notch is provided at the top of the ventilation plate 31, and a limiting block 34 is provided on the edge of the upper end face of the baffle 32 and at the notch. The side of the limiting block 34 contacts the edge of the notch of the ventilation plate 31, so that the baffle 32 has a limiting effect when driving the limiting block 34 to rotate, thereby avoiding the situation where the connection between the ventilation plate 31 and the baffle 32 cannot be observed when the baffle 32 is driven to rotate by the driving component 4 on the outside of the exhaust pipe 2.

[0049] In this embodiment, the baffle 32 drives the limit block 34 to rotate inside the ventilation plate 31, so that the limit block 34 cooperates with the notch of the ventilation plate 31 to limit the rotation angle of the baffle 32, so that the rotation angle of the baffle 32 is only the angle of the size of the ventilation hole of the ventilation plate 31 to close, thereby preventing the ventilation hole of the ventilation plate 31 from being unable to be closed due to the rotation angle being too large or too small, and preventing the ventilation plate 31 from rotating infinitely, resulting in the position of the ventilation plate 31 on the baffle 32 remaining unchanged.

[0050] Example 3

[0051] like Figure 5 As shown, the utility model proposes a multi-stage rotary kiln. Compared with the second embodiment, in this embodiment, a limiting groove 35 is provided on the inner side of the ventilation plate 31 and near the top. When the ventilation plate 31 and the baffle 32 are installed in cooperation, the edge of the baffle 32 is accommodated in the limiting groove 35.

[0052] In this embodiment, the limiting groove 35 is wrapped around the edge of the baffle 32, so that the baffle 32 has a blocking effect when closing the ventilation hole of the ventilation plate 31, thereby preventing the baffle 32 from falling off due to high pressure.

[0053] Example 4

[0054] like Figure 3 As shown, the multi-stage rotary kiln proposed in the present invention, compared with the first embodiment, in this embodiment, the driving assembly 4 includes a rotating rod 42 and a rotating disk 43;

[0055] The rotating rod 42 is rotatably mounted on the exhaust pipe 2, and one end thereof extends to the inside of the exhaust pipe 2 and is transmission-connected to the baffle 32;

[0056] The turntable 43 is installed at the other end of the rotating rod 42 and is used to control the baffle 32 through the rotating rod 42 when in use. The surface of the turntable 43 has a position mark of the rotation direction and the rotation point, so that the user can clearly observe the driving status of the baffle 32 through the driving assembly 4.

[0057] In an optional embodiment, teeth 33 are installed in a ring array on the upper end surface of the baffle 32 and near the edge. A gear 41 is provided at one end of the rotating rod 42, and the gear 41 is meshed with the teeth 33.

[0058] In this embodiment, the turntable 43 is rotated through the rotating rod 42 by rotating the turntable 43, and the rotating rod 42 drives the gear 41 engaged with the teeth 33 on the baffle 32 to rotate, thereby driving the baffle 32 to adjust the angle of the ventilation plate 31, so that the ventilation plate 31 and the baffle 32 can be opened and closed.

[0059] Example 5

[0060] like Figure 6As shown, the multi-stage rotary kiln proposed by the present invention, compared with the first embodiment, in this embodiment, the auxiliary components include fan blades 6 and stoppers 7;

[0061] The stopper 7 is bolted to the inside of the exhaust pipe 2 and is located below the closing assembly 3;

[0062] The fan blade 6 is rotatably mounted on the top of the stopper 7 and is used to rotate when in use to increase the smoke exhaust speed.

[0063] In an optional embodiment, the stopper 7 includes a stopper 71 and a mounting rod 72;

[0064] The blocking block 71 is arranged on the inner side of the exhaust pipe 2 and below the sealing assembly 3 ; wherein, a plurality of interconnected through holes are provided at the bottom end of the blocking block 71 , which reduce the volume of the flame in the kiln body 1 moving toward the inner side of the exhaust pipe 2 .

[0065] The mounting rod 72 is mounted on the outside of the blocking block 71 and fixed to the inside of the exhaust pipe 2 by bolts, and the cross section of the mounting rod 72 is diamond-shaped.

[0066] In an optional embodiment, the fan blade 6 includes a blade 61 and a rotating shaft 62;

[0067] The rotating shaft 62 is rotatably mounted on the top of the blocking block 71;

[0068] The blade 61 is mounted on the top end of the rotating shaft 62 and is used to drive the rotating shaft 62 to rotate on the blocking block 71 by the hot gas impulse generated by the flame when in use.

[0069] In this embodiment, the blocking block 71 blocks the flame in the kiln body 1 and allows the smoke and hot air to move upward on the inner side of the exhaust pipe 2 through the gap between the blocking block 71 and the exhaust pipe 2. During the upward movement, the hot air drives the fan blades 6 to rotate, and the rotation of the fan blades 6 increases the upward movement speed of the smoke and improves the smoke emission efficiency in the kiln body 1.

[0070] To sum up, when the present invention is in use, the exhaust pipe 2 is connected and communicated with the external dust removal device through the flange 5, and the turntable 43 is rotated by the turntable 43 through the turn rod 42, and the turn rod 42 drives the gear 41 meshing with the teeth 33 on the baffle 32 to rotate, thereby driving the baffle 32 to adjust the angle of the ventilation plate 31, so that the ventilation plate 31 and the baffle 32 are opened and closed. During the adjustment process, the baffle 32 drives the limit block 34 to rotate inside the ventilation plate 31, so that the limit block 34 cooperates with the notch of the ventilation plate 31 to limit the rotation angle of the baffle 32, so that the rotation angle of the baffle 32 is only the angle of the size of the ventilation hole of the ventilation plate 31, thereby avoiding that the ventilation hole of the ventilation plate 31 cannot be closed due to excessive or too small rotation angle, and preventing ventilation The plate 31 rotates infinitely, and the position of the ventilation plate 31 on the baffle 32 remains unchanged. The limit groove 35 is wrapped around the edge of the baffle 32, so that the baffle 32 has a blocking effect when closing the ventilation hole of the ventilation plate 31, avoiding the baffle 32 falling off due to high pressure. When the ventilation plate 31 is opened, the smoke and dust are transported along the inside of the exhaust pipe 2 and through the ventilation holes of the ventilation plate 31 and the baffle 32 to the external dust removal device. During the flow of smoke and dust inside the exhaust pipe 2, the blocking block 71 blocks the flame in the kiln body 1, and allows the smoke and hot air to move upward on the inside of the exhaust pipe 2 through the gap between the blocking block 71 and the exhaust pipe 2. During the upward movement, the hot air drives the fan blades 6 to rotate, so that the rotation of the fan blades 6 increases the upward movement speed of the smoke and improves the smoke emission efficiency in the kiln body 1.

[0071] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A multi-stage rotary kiln, characterized in that: It comprises a kiln body (1), an exhaust pipe (2), a driving component (4) and auxiliary components; An exhaust pipe (2) is installed at the top of the kiln body (1) and is in communication with the kiln body (1); a sealing component (3) is provided on the inner side of the exhaust pipe (2) for discharging smoke from the kiln body (1) through the exhaust pipe (2) and sealing the smoke in the exhaust pipe (2) when in use; The driving assembly (4) is arranged at the upper end of the closing assembly (3) and extends to the outside of the exhaust pipe (2) for controlling the exhaust pipe (2) in a use state; The auxiliary component is installed inside the exhaust pipe (2) and located below the closing component (3) and is used to increase the flow speed of the smoke when in use.

2. A multi-stage rotary kiln according to claim 1, characterized in that: A flange (5) is provided at the top end of the exhaust pipe (2), and the flange (5) is bolted to an external dust removal device.

3. A multi-stage rotary kiln according to claim 1, characterized in that: The closing assembly (3) includes a ventilation plate (31) and a baffle (32); The ventilation plate (31) is bolted to the inner side of the exhaust pipe (2) and is sealed to the inner wall of the exhaust pipe (2); The baffle (32) is rotatably mounted on the inner side of the ventilation plate (31) and is used to close and open the ventilation holes of the ventilation plate (31) when in use.

4. A multi-stage rotary kiln according to claim 1, characterized in that: A limiting groove (35) is provided on the inner side of the ventilation plate (31) and near the top end. When the ventilation plate (31) and the baffle (32) are in a cooperatively installed state, the edge of the baffle (32) is cooperatively accommodated in the limiting groove (35).

5. A multi-stage rotary kiln according to claim 3, characterized in that: The driving assembly (4) includes a rotating rod (42) and a rotating disk (43); The rotating rod (42) is rotatably mounted on the exhaust pipe (2), and one end thereof extends to the inside of the exhaust pipe (2) and is transmission-connected to the baffle (32); The rotating disk (43) is mounted on the other end of the rotating rod (42) and is used to control the baffle (32) through the rotating rod (42) in a use state.

6. A multi-stage rotary kiln according to claim 5, characterized in that: The upper end surface of the baffle (32) and near the edge thereof are provided with teeth (33) in an annular array. One end of the rotating rod (42) is provided with a gear (41), and the gear (41) is meshedly connected with the teeth (33).

7. A multi-stage rotary kiln according to claim 3, characterized in that: A notch is provided at the top end of the ventilation plate (31), and a limiting block (34) is provided at the edge of the upper end surface of the baffle (32) and located at the notch, and the side surface of the limiting block (34) contacts the ventilation plate (31).

8. The multi-stage rotary kiln according to claim 1, characterized in that: The auxiliary component includes a fan blade (6) and a stopper (7); The stopper (7) is bolted to the inside of the exhaust pipe (2) and is located below the closing assembly (3); The fan blade (6) is rotatably mounted on the top end of the stopper (7) and is used to rotate in a use state to increase the smoke exhaust speed.

9. The multi-stage rotary kiln according to claim 8, characterized in that: The stopper (7) comprises a stopper (71) and a mounting rod (72); The blocking block (71) is arranged on the inner side of the exhaust pipe (2) and is located below the sealing assembly (3); The mounting rod (72) is mounted on the outside of the blocking block (71) and is fixed to the inside of the exhaust pipe (2) by means of bolts.

10. The multi-stage rotary kiln according to claim 9, characterized in that: The fan blade (6) includes a blade (61) and a rotating shaft (62); The rotating shaft (62) is rotatably mounted on the top of the blocking block (71); The blade (61) is mounted on the top end of the rotating shaft (62).

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