Rotary kiln tail sealing device

Abstract

The utility model relates to the technical field of rotary kilns, in particular to a rotary kiln tail sealing device which comprises a rotary drum, a friction sleeve fixedly arranged on the rotary drum, a fish scale ring abutting against the friction sleeve, a kiln tail connected with the fish scale ring, an exhaust mechanism and an ash discharge mechanism, and the exhaust mechanism and the ash discharge mechanism are arranged in the kiln tail. The exhaust mechanism comprises an exhaust pipe communicated with the kiln tail, an exhaust fan arranged in the kiln tail and a dust baffle, the dust baffle is connected with a cleaning assembly, the cleaning assembly comprises a first mounting plate connected with the inner wall of the kiln tail, a roller brush connected with the first mounting plate in a sliding mode and a driving assembly arranged on the first mounting plate, and the driving assembly is connected with the roller brush; the ash discharging mechanism comprises an ash discharging pipe communicated with the kiln tail and an anti-blocking mechanism arranged in the ash discharging pipe. The device has the advantages that the dust baffle is cleaned, the dust discharging pipe is dredged, and therefore the discharging efficiency of smoke and dust in the kiln tail is improved.

Description

Technical Field

[0001] This application relates to the field of rotary kiln technology, and in particular to a rotary kiln tail sealing device. Background Technology

[0002] Rotary kilns are widely used in the cement, chemical, and metallurgical industries. Because a rotary kiln operates by rotating and reciprocating along its axial direction for approximately 50mm, while the feeding device is a fixed structure, a sufficient gap must be maintained between the rotary kiln and the feeding device. To prevent dust from leaking out of the gap, a sealing device needs to be installed at the gap.

[0003] Existing technology CN220552263U discloses a rotary kiln tail sealing structure, which includes a rotary drum, a kiln tail, and a collection hopper. A friction sleeve is fixedly installed on the rotary drum, and a fish-scale ring is provided on the side of the friction sleeve away from the rotary drum. The kiln tail is equipped with an exhaust port, an exhaust fan, a dust baffle, a reverse air baffle, and an ash discharge port. This structure achieves smoke and ash discharge from the rotary kiln tail sealing structure, thereby reducing the accumulation of smoke and dust in the kiln tail sealing structure and improving the safety of rotary kiln operation. However, after a period of use, the dust baffle in the kiln tail will experience a decrease in filtration efficiency due to dust accumulation, thus reducing the efficiency of smoke exhaust from the kiln tail. Simultaneously, dust accumulation on the dust baffle reduces the ash discharge efficiency of the kiln tail.

[0004] Regarding the aforementioned technologies, the inventors believe that the dust baffle in the kiln tail will cause dust accumulation during use, thereby reducing the efficiency of flue gas and dust discharge in the kiln tail. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application provides a rotary kiln tail sealing device.

[0006] This application provides a rotary kiln tail sealing device, which adopts the following technical solution:

[0007] A rotary kiln tail sealing device includes a rotary drum, a friction sleeve fixedly mounted on the rotary drum, a fish-scale ring abutting against the friction sleeve, a kiln tail connected to the fish-scale ring, an exhaust mechanism and an ash removal mechanism disposed in the kiln tail. The exhaust mechanism includes an exhaust pipe communicating with the kiln tail, an exhaust fan disposed in the kiln tail, and a dust baffle plate. The dust baffle plate is connected to a cleaning assembly. The cleaning assembly includes a first mounting plate connected to the inner wall of the kiln tail, a roller brush slidably connected to the first mounting plate, and a drive assembly disposed on the first mounting plate. The drive assembly is connected to the roller brush. The ash removal mechanism includes an ash removal pipe communicating with the kiln tail and an anti-clogging mechanism disposed in the ash removal pipe.

[0008] By adopting the above technical solution, the drive component drives the roller brush to reciprocate on the dust baffle, thereby effectively cleaning the dust accumulated on the dust baffle, maintaining the filtration efficiency of the dust baffle, and thus improving the discharge efficiency of flue gas in the kiln tail. By setting an anti-clogging mechanism in the ash discharge pipe, the accumulation of dust and impurities in the ash discharge pipe is reduced, thereby improving the dust discharge efficiency in the kiln tail.

[0009] Preferably, the first mounting plate is provided with a first limiting groove, and the driving assembly includes a first transmission motor fixedly connected to the first mounting plate, a lead screw and a first slider disposed in the first limiting groove. One end of the lead screw is fixedly connected to the transmission shaft of the first transmission motor, and the other end is rotatably connected to the first mounting plate. The first slider is threadedly connected to the lead screw and slidably connected to the first limiting groove. The first slider is connected to the roller brush.

[0010] By adopting the above technical solution, the first drive motor drives the lead screw to rotate, the lead screw drives the first slider to slide in the limiting groove, and the first slider drives the roller brush to move back and forth, thereby cleaning the dust baffle.

[0011] Preferably, a second mounting plate is provided in the kiln tail, and a second limiting groove is provided on the second mounting plate. The driving assembly further includes a second slider and a second transmission motor disposed in the second limiting groove. The second slider is slidably connected to the second limiting groove, the second transmission motor is fixedly connected to the second slider, and the transmission shaft of the second transmission motor is fixedly connected to the end of the roller brush away from the first slider. The roller brush is rotatably connected to the first slider.

[0012] By adopting the above technical solution, the setting of the second mounting plate and the second slider increases the stability of the roller brush movement process, and the second drive motor drives the roller brush to rotate, thereby improving the cleaning effect of the roller brush on the dust baffle.

[0013] Preferably, the first slider is connected to a dust collection trough, the dust collection trough is connected to a dust conveying hose, the dust collection trough is located at the end of the roller brush away from the dust baffle, and the end of the dust collection trough away from the first slider is connected to the second slider.

[0014] By adopting the above technical solution, the dust collection trough collects the dust cleaned by the roller brush, reducing the phenomenon that the cleaned dust is carried back to the dust baffle by the flue gas, thereby improving the cleaning effect of the cleaning component on the dust baffle.

[0015] Preferably, a guide plate is provided at the end of the ash collection trough away from the roller brush. The guide plate is inclined and connected to the ash conveying hose.

[0016] By adopting the above technical solution, the setting of the guide plate improves the dust discharge efficiency, thereby improving the ash discharge efficiency at the kiln tail.

[0017] Preferably, a vibration motor is provided on the side wall of the ash collection trough.

[0018] By adopting the above technical solution, the installation of the vibration motor reduces the accumulation of dust in the ash collection trough and further improves the ash removal efficiency at the kiln tail.

[0019] Preferably, the ash collection trough is connected to a shock-absorbing assembly, which includes a shock-absorbing spring and a limiting telescopic rod disposed in the shock-absorbing spring. One end of the shock-absorbing spring is connected to the ash collection trough and the other end is connected to the first slider. One end of the limiting telescopic rod is connected to the ash collection trough and the other end is connected to the first slider.

[0020] By adopting the above technical solution, the damping component reduces the impact of the vibration motor on the roller brush and drive assembly, thereby improving the stability of the roller brush movement.

[0021] Preferably, the anti-clogging mechanism includes a guide ring and a vibration component disposed in the ash discharge pipe. The guide ring is inclined, with the end of the guide ring away from the ash discharge pipe inclined in a direction away from the kiln tail.

[0022] By adopting the above technical solution, the inclined guide ring facilitates the falling of dust, thereby reducing dust accumulation. The vibration component drives the guide ring to vibrate, further improving the dust falling efficiency.

[0023] Preferably, the vibration assembly includes a third drive motor fixedly connected to the ash discharge pipe, a cam fixedly connected to the drive shaft of the third drive motor, and a return spring. A third limiting groove is provided on the inner wall of the ash discharge pipe. A third slider is connected to the guide ring. The third slider is slidably connected to the third limiting groove. The cam abuts against the guide ring. The return spring is disposed in the third limiting groove. One end of the return spring is connected to the third slider, and the other end is connected to the ash discharge pipe.

[0024] By adopting the above technical solution, the third drive motor drives the cam to rotate, and the cam and the return spring drive the guide ring to vibrate, thereby improving the dust falling efficiency.

[0025] In summary, this application has the following beneficial technical effects:

[0026] 1. This application effectively cleans the dust accumulated on the dust baffle plate by using cleaning components and drive components, thereby improving the discharge efficiency of flue gas in the kiln tail;

[0027] 2. This application collects the dust cleaned by the roller brush through a dust collection trough, thereby reducing the phenomenon that the flue gas will bring the fallen dust back to the dust baffle plate, thus improving the cleaning effect of the cleaning component on the dust baffle plate;

[0028] 3. This application has an anti-clogging mechanism in the ash discharge pipe, which drives the guide plate to vibrate back and forth through the vibration component, thereby improving the dust falling efficiency and thus improving the dust discharge efficiency in the kiln tail. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a rotary kiln tail sealing device.

[0030] Figure 2 It is a cross-sectional structural diagram of the kiln tail, exhaust mechanism, ash discharge mechanism, cleaning components and ash collection trough;

[0031] Figure 3 This is a cross-sectional structural diagram of the cleaning component;

[0032] Figure 4 It is a cross-sectional structural diagram of the cleaning components, dust collection trough, and shock absorption components;

[0033] Figure 5 This is a cross-sectional structural diagram of the ash removal mechanism.

[0034] Explanation of reference numerals in the attached drawings: 1. Rotary drum; 11. Friction sleeve; 12. Fish scale ring; 2. Kiln tail; 3. Exhaust mechanism; 31. Exhaust pipe; 32. Exhaust fan; 33. Dust baffle; 4. Ash removal mechanism; 41. Ash removal pipe; 411. Third limit slide groove; 412. Third slider; 42. Anti-clogging mechanism; 421. Guide ring; 422. Vibration assembly; 4221. Third drive motor; 4222. Cam; 4223. Return spring; 5. Cleaning assembly Components; 51. First mounting plate; 511. First limiting slide groove; 52. Roller brush; 53. Drive assembly; 531. First transmission motor; 532. Lead screw; 533. First slider; 534. Second slider; 535. Second transmission motor; 54. Second mounting plate; 541. Second limiting slide groove; 6. Ash collection trough; 61. Ash conveying hose; 62. Guide plate; 63. Vibration motor; 7. Shock absorption assembly; 71. Shock absorption spring; 72. Limiting telescopic rod. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0036] This application discloses a rotary kiln tail sealing device.

[0037] Reference Figure 1 , Figure 2 and Figure 3A rotary kiln tail sealing device includes a rotary drum 1, a friction sleeve 11 fixedly mounted on the rotary drum 1, a fish-scale ring 12 abutting against the friction sleeve 11, a kiln tail 2 fixedly connected to the fish-scale ring 12, an exhaust mechanism 3 and an ash removal mechanism 4 disposed in the kiln tail 2. The exhaust mechanism 3 includes an exhaust pipe 31 fixedly connected to the kiln tail 2, an exhaust fan 32 fixedly mounted in the kiln tail 2, and a dust baffle 33 fixedly mounted in the kiln tail 2. The dust baffle 33 is connected to a cleaning assembly 5. The cleaning assembly 5 includes a first mounting plate 51 fixedly connected to the inner wall of the kiln tail 2, a roller brush 52 slidably connected to the first mounting plate 51, and a drive assembly 53 disposed on the first mounting plate 51. The drive assembly 53 is connected to the roller brush 52. The ash removal mechanism 4 includes an ash removal pipe 41 connected to the kiln tail 2 and an anti-clogging mechanism 42 disposed in the ash removal pipe 41.

[0038] The first mounting plate 51 has a first limiting groove 511. The drive assembly 53 includes a first transmission motor 531 fixedly connected to the first mounting plate 51, a lead screw 532 and a first slider 533 disposed in the first limiting groove 511. One end of the lead screw 532 is fixedly connected to the transmission shaft of the first transmission motor 531, and the other end is rotatably connected to the first mounting plate 51 through a bearing. The first slider 533 is threadedly connected to the lead screw 532 and slidably connected to the first limiting groove 511. The first slider 533 is rotatably connected to the roller brush 52 through a bearing.

[0039] A second mounting plate 54 is fixedly installed in the kiln tail 2. A second limiting groove 541 is provided on the second mounting plate 54. The drive assembly 53 also includes a second slider 534 and a second drive motor 535 disposed in the second limiting groove 541. The second slider 534 is slidably connected to the second limiting groove 541. The second drive motor 535 is fixedly connected to the second slider 534. The drive shaft of the second drive motor 535 is fixedly connected to the end of the roller brush 52 away from the first slider 533.

[0040] The first slider 533 is connected to a dust collection trough 6, which is fixedly connected to a dust conveying hose 61. The dust collection trough 6 is located at the end of the roller brush 52 away from the dust baffle 33, and the end of the dust collection trough 6 away from the first slider 533 is connected to the second slider 534.

[0041] Reference Figure 4A guide plate 62 is fixedly installed at the end of the ash collection trough 6 away from the roller brush 52. The guide plate 62 is inclined and fixedly connected to the ash conveying hose 61. A vibration motor 63 is fixedly installed on the side wall of the ash collection trough 6. The ash collection trough 6 is connected to a shock absorption assembly 7, which includes a shock absorption spring 71 and a limiting telescopic rod 72 disposed in the shock absorption spring 71. One end of the shock absorption spring 71 is fixedly connected to the ash collection trough 6, and the other end is fixedly connected to the first slider 533. One end of the limiting telescopic rod 72 is fixedly connected to the ash collection trough 6, and the other end is fixedly connected to the first slider 533. In the embodiment of this application, there are two shock absorption assemblies 7, which are respectively disposed at both ends of the ash collection trough 6 and are fixedly connected to the first slider 533 and the second slider 534, respectively.

[0042] Reference Figure 5 The anti-clogging mechanism 42 includes a guide ring 421 and a vibration component 422 disposed in the ash discharge pipe 41. The guide ring 421 is inclined, with the end of the guide ring 421 away from the ash discharge pipe 41 inclined in a direction away from the kiln tail 2.

[0043] The vibration assembly 422 includes a third drive motor 4221 fixedly connected to the ash discharge pipe 41, a cam 4222 fixedly connected to the drive shaft of the third drive motor 4221, and a return spring 4223. A third limiting groove 411 is provided on the inner wall of the ash discharge pipe 41. A third slider 412 is fixedly connected to the guide ring 421. The third slider 412 is slidably connected to the third limiting groove 411. The cam 4222 abuts against the guide ring 421. The return spring 4223 is disposed in the third limiting groove 411. One end of the return spring 4223 is fixedly connected to the third slider 412, and the other end is fixedly connected to the ash discharge pipe 41.

[0044] The implementation principle of the rotary kiln tail sealing device in this embodiment is as follows: the first drive motor 531 drives the lead screw 532 to rotate, and the lead screw 532 drives the roller brush 52 to move through the first slider 533. At the same time, the second drive motor 535 drives the roller brush 52 to rotate, thereby cleaning the dust baffle 33 and improving the exhaust efficiency of flue gas in the kiln tail 2. The dust cleaned from the dust baffle 33 falls into the ash collection trough 6. The vibration motor 63 drives the ash collection trough 6 to vibrate, thereby promoting the dust to enter the ash discharge pipe 41 through the guide plate 62 and the ash conveying hose 61, and then discharge it from the kiln tail 2. When dust falls onto the guide ring 421, some of the dust falls through the inclined guide ring 421 and is discharged from the kiln tail 2. The remaining dust accumulates on the guide ring 421. The third drive motor 4221 drives the cam 4222 to rotate. The cam 4222 and the return spring 4223 drive the guide ring 421 to vibrate back and forth, thereby shaking off the dust accumulated on the guide ring 421. This reduces the phenomenon of dust clogging the ash discharge pipe 41 and improves the ash discharge efficiency of the kiln tail 2.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rotary kiln tail sealing device, comprising a rotary drum (1), a friction sleeve (11) fixedly disposed on the rotary drum (1), a fish scale ring (12) abutting against the friction sleeve (11), a kiln tail (2) connected to the fish scale ring (12), an exhaust mechanism (3) and an ash removal mechanism (4) disposed in the kiln tail (2), characterized in that: The exhaust mechanism (3) includes an exhaust pipe (31) connected to the kiln tail (2), an exhaust fan (32) disposed in the kiln tail (2), and a dust baffle (33). The dust baffle (33) is connected to a cleaning component (5). The cleaning component (5) includes a first mounting plate (51) connected to the inner wall of the kiln tail (2), a roller brush (52) slidably connected to the first mounting plate (51), and a drive component (53) disposed on the first mounting plate (51). The drive component (53) is connected to the roller brush (52). The ash discharge mechanism (4) includes an ash discharge pipe (41) connected to the kiln tail (2) and an anti-clogging mechanism (42) disposed in the ash discharge pipe (41).

2. The rotary kiln tail sealing device according to claim 1, characterized in that: The first mounting plate (51) is provided with a first limiting groove (511). The drive assembly (53) includes a first transmission motor (531) fixedly connected to the first mounting plate (51), a lead screw (532) and a first slider (533) disposed in the first limiting groove (511). One end of the lead screw (532) is fixedly connected to the transmission shaft of the first transmission motor (531), and the other end is rotatably connected to the first mounting plate (51). The first slider (533) is threadedly connected to the lead screw (532) and slidably connected to the first limiting groove (511). The first slider (533) is connected to the roller brush (52).

3. The rotary kiln tail sealing device according to claim 2, characterized in that: A second mounting plate (54) is provided in the kiln tail (2). A second limiting groove (541) is provided on the second mounting plate (54). The drive assembly (53) also includes a second slider (534) and a second drive motor (535) provided in the second limiting groove (541). The second slider (534) is slidably connected to the second limiting groove (541). The second drive motor (535) is fixedly connected to the second slider (534). The drive shaft of the second drive motor (535) is fixedly connected to the end of the roller brush (52) away from the first slider (533). The roller brush (52) is rotatably connected to the first slider (533).

4. The rotary kiln tail sealing device according to claim 3, characterized in that: The first slider (533) is connected to a dust collection trough (6), which is connected to a dust conveying hose (61). The dust collection trough (6) is located at one end of the roller brush (52) away from the dust baffle (33), and the end of the dust collection trough (6) away from the first slider (533) is connected to the second slider (534).

5. A rotary kiln tail sealing device according to claim 4, characterized in that: The ash collection trough (6) is provided with a guide plate (62) at one end away from the roller brush (52). The guide plate (62) is inclined and is connected to the ash conveying hose (61).

6. A rotary kiln tail sealing device according to claim 5, characterized in that: A vibration motor (63) is installed on the side wall of the ash collection trough (6).

7. A rotary kiln tail sealing device according to claim 6, characterized in that: The ash collection trough (6) is connected to a shock absorption assembly (7). The shock absorption assembly (7) includes a shock absorption spring (71) and a limiting telescopic rod (72) disposed in the shock absorption spring (71). One end of the shock absorption spring (71) is connected to the ash collection trough (6), and the other end is connected to the first slider (533). One end of the limiting telescopic rod (72) is connected to the ash collection trough (6), and the other end is connected to the first slider (533).

8. A rotary kiln tail sealing device according to claim 1, characterized in that: The anti-clogging mechanism (42) includes a guide ring (421) and a vibration component (422) disposed in the ash discharge pipe (41). The guide ring (421) is inclined, and the end of the guide ring (421) away from the ash discharge pipe (41) is inclined in a direction away from the kiln tail (2).

9. A rotary kiln tail sealing device according to claim 8, characterized in that: The vibration assembly (422) includes a third drive motor (4221) fixedly connected to the ash discharge pipe (41), a cam (4222) fixedly connected to the drive shaft of the third drive motor (4221), and a return spring (4223). A third limiting groove (411) is provided on the inner wall of the ash discharge pipe (41). A third slider (412) is connected to the guide ring (421). The third slider (412) is slidably connected to the third limiting groove (411). The cam (4222) abuts against the guide ring (421). The return spring (4223) is disposed in the third limiting groove (411). One end of the return spring (4223) is connected to the third slider (412), and the other end is connected to the ash discharge pipe (41).

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