CN213435098U

CN213435098U - Rotary air lock

Info

Publication number: CN213435098U
Application number: CN202022400817.1U
Authority: CN
Inventors: 邱诚; 李姝�; 余贵英; 胡宇; 周铭朗; 潘定平; 邓贵文; 高进长; 郑桂花; 邱阳
Original assignee: Chengdu Technological University CDTU
Current assignee: Chengdu Technological University CDTU; Chengdu Univeristy of Technology
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-06-15
Anticipated expiration: 2030-10-26

Abstract

The utility model discloses a rotary air lock, which comprises a hollow cylindrical shell, wherein an upper air lock mechanism and a lower air lock mechanism are arranged in the shell; a rotating shaft connected with the upper layer air locking mechanism and the lower layer air locking mechanism is arranged in the shell along the axial direction of the shell, and a power mechanism for driving the rotating shaft to rotate is arranged at the end part of the rotating shaft; compared with the traditional heavy hammer type air locker, the rotary air locker of the utility model discharges dust in a subsection way through the double-layer air locking mechanism, thereby ensuring the sealing performance of the air locker, avoiding the occurrence of air leakage and improving the dust removal effect; the device drives the rotating shaft to rotate through the power mechanism so as to open or close the corresponding notch, so that the operation is stable, and the air locker cannot be damaged; in addition, the air locking device of the device is in continuous action, the situation that a large amount of dust is discharged suddenly due to more dust in the air is avoided, and the dust discharging speed is uniform and stable.

Description

Rotary air lock

Technical Field

The utility model belongs to the technical field of the airlock technique and specifically relates to a rotation type airlock for cyclone arranges ash.

Background

Cyclone dust collectors are a type of dust removing device. For the cyclone dust collector, the air lock mainly has the functions of ensuring smooth dust removal and avoiding air leakage to the maximum extent under the condition of high negative pressure in the cyclone dust collector. The dust removal mechanism of the cyclone dust collector is as follows: the dust-containing flue gas tangentially enters from the upper part of the dust remover and spirally rotates from top to bottom. Due to the action of centrifugal force, airflow rotates downwards along the wall surface, and after the airflow reaches the bottom (some airflow can extend into the ash bucket all the way), a core airflow column which rotates and rises strongly is formed, so that a higher negative pressure area is formed at the bottom of the dust remover or in the ash bucket, and the negative pressure value of the negative pressure area is much higher than that of the inlet of the dust remover and is generally closer to or even exceeds that of the outlet of the dust remover; therefore, the dust remover must maintain a high degree of sealing during the ash discharge process.

At present, a relatively common air locker is a heavy hammer type air locker, but a lever of the heavy hammer type air locker passes through equipment from inside to outside to cause untight sealing, so that the equipment leaks air, and researches show that: when the air leakage rate of the air lock reaches 5%, the dust removal efficiency of the dust remover is reduced by 50%; when the air leakage rate of the air locker is increased to 15%, the dust removal efficiency is almost reduced to zero; in addition, the swinging of the weight air locker can cause unstable operation of the equipment and even damage to the components.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rotary air lock which solves the technical problems of untight sealing and unstable operation of the traditional hammer air lock.

The utility model adopts the technical proposal that: the rotary air lock comprises a hollow cylindrical shell, wherein an upper air lock mechanism and a lower air lock mechanism are arranged in the shell; a rotating shaft connected with the upper layer air locking mechanism and the lower layer air locking mechanism is arranged in the shell along the axial direction of the shell, and a power mechanism for driving the rotating shaft to rotate is arranged at the end part of the rotating shaft; the upper layer air locking mechanism comprises a first rotating disc matched with the inner diameter of the shell and a first fixed disc arranged on the lower surface of the first rotating disc; the first rotating disc is fixedly connected with the rotating shaft, and the first fixing disc is fixedly connected with the shell; a first notch is formed in the first rotating disc, and a second notch matched with the first notch is formed in the first fixing disc; the lower layer air locking mechanism comprises a second rotating disc matched with the inner diameter of the shell and a second fixed disc arranged on the lower surface of the second rotating disc; the second rotating disc is fixedly connected with the rotating shaft, and the second fixed disc is fixedly connected with the shell; a third notch matched with the second notch is formed in the second rotating disc, and a fourth notch matched with the third notch is formed in the second fixed disc; the first notch and the third notch are arranged in a staggered mode in the longitudinal direction, and the second notch and the fourth notch are arranged in the same position in the longitudinal direction.

The utility model drives the rotating shaft to rotate through the power mechanism, and further drives the first rotating disc and the second rotating disc which are fixedly connected with the rotating shaft to synchronously rotate; when the first notch on the first rotating disc rotates to overlap with the second notch on the first fixed disc, dust above the upper air locking mechanism sequentially passes through the first notch and the second notch to reach a space between the upper air locking mechanism and the lower air locking mechanism. Because the first gap and the third gap are arranged in a staggered manner in the longitudinal direction, when the first gap of the upper layer air locking mechanism is opened, the third gap of the lower layer air locking mechanism is in a sealed state; the rotating shaft continues to rotate, when the first notch of the upper air locking mechanism is closed, the third notch of the lower air locking mechanism is in an open state, dust between the upper air locking mechanism and the lower air locking mechanism drops to the lower portion of the lower air locking mechanism, and then the dust is discharged through the dust hopper. Compared with the traditional heavy hammer type air locker, the rotary air locker of the utility model discharges dust in a subsection way through the double-layer air locking mechanism, thereby ensuring the sealing performance of the air locker, avoiding the occurrence of air leakage and improving the dust removal effect; the device drives the rotating shaft to rotate through the power mechanism so as to open or close the corresponding notch, so that the operation is stable, and the air locker cannot be damaged; in addition, the air locking device of the device is in continuous action, the situation that a large amount of dust is discharged suddenly due to more dust in the air is avoided, and the dust discharging speed is uniform and stable.

Further, the first notch and the third notch are arranged oppositely in the longitudinal direction. The interval time for opening the first notch of the upper layer air locking mechanism and the third notch of the lower layer air locking mechanism is maximized, so that the sealing performance and the dust exhaust efficiency are effectively guaranteed.

Further, first rotary disk upper surface is provided with the first scraper blade with casing fixed connection, and at first rotary disk pivoted in-process, first scraper blade can hang the dust attached to first rotary disk upper surface and fall, avoids the dust to block up first breach more at first rotary disk upper surface, the effectual dust exhaust efficiency of having guaranteed.

Furthermore, the second scraper blade fixedly connected with the shell is arranged on the upper surface of the second rotating disc, and in the rotating process of the second rotating disc, the second scraper blade can hang down dust attached to the upper surface of the second rotating disc, so that the situation that more dust is accumulated on the upper surface of the second rotating disc, the third notch is blocked and the dust exhaust efficiency is effectively guaranteed.

Furthermore, the ends of the first fixed disk and the second fixed disk, which are adjacent to the rotating shaft, are provided with elastic sealing gaskets, so that certain elasticity is achieved, and the sealing performance between the first fixed disk and the rotating shaft and the sealing performance between the second fixed disk and the rotating shaft can be guaranteed.

Furthermore, the first rotating disc, the first fixed disc, the second rotating disc and the second fixed disc are all made of metal, so that the stability is good, the wear resistance is high, and the cost is low.

Furthermore, the power mechanism is a stepless speed change motor, the performance is reliable and stable, and accurate rotation and speed regulation can be realized.

The utility model has the advantages that:

1. the rotary air-lock device of the utility model discharges dust by the double-layer air-lock mechanism in a subsection way, thereby ensuring the sealing performance of the air-lock device, avoiding the occurrence of air leakage and improving the dust removal effect; the device drives the rotating shaft to rotate through the power mechanism so as to open or close the corresponding notch, so that the operation is stable, and the air locker cannot be damaged; in addition, the air locking device of the device is in continuous action, the situation that a large amount of dust is discharged suddenly due to more dust in the air is avoided, and the dust discharging speed is uniform and stable.

2. The utility model discloses a first scraper blade can hang the dust attached to first rotary disk upper surface and fall, avoids the dust to be more in first rotary disk upper surface, blocks up first breach, the effectual dust exhaust efficiency of having guaranteed.

3. The utility model discloses a second scraper blade can hang the dust that adheres to at second rolling disc upper surface and fall, avoids the dust more long-pending at second rolling disc upper surface, blocks up the third breach, the effectual dust exhaust efficiency of having guaranteed.

4. The utility model discloses an elasticity is sealed to be filled up can guarantee the leakproofness between first fixed disk and second fixed disk and the pivot, avoids leaking out.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an installation schematic diagram of the present invention.

Labeled as:

1. a shell 2 and a rotating shaft; 3. a first rotating disk; 4. a first fixed disk; 5. a second rotating disk; 6. a second fixed disk; 7. a first squeegee; 8. a second squeegee;

31. a first notch; 41. a second notch; 51. a third notch; 61. and a fourth notch.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Example one

Referring to fig. 1 and 2, the rotary air-lock device of the present invention comprises a hollow cylindrical housing 1, wherein an upper air-lock mechanism and a lower air-lock mechanism are arranged in the housing 1; the rotating shaft 2 connected with the upper layer air locking mechanism and the lower layer air locking mechanism is arranged in the shell 1 along the axial direction of the shell, a power mechanism (not shown in the figure) for driving the rotating shaft 2 to rotate is arranged at the end part of the rotating shaft 2, the power mechanism is a stepless speed change motor, the stepless speed change motor has the characteristics of reliable and stable performance and the like, and accurate rotation and speed regulation can be realized.

Referring to fig. 2, the upper layer air locking mechanism includes a first rotary disk 3 matching with the inner diameter of the housing 1 and a first fixed disk 4 disposed on the lower surface of the first rotary disk 3; the first rotating disc 3 is fixedly connected with the rotating shaft 2, and the first fixed disc 4 is fixedly connected with the shell 1; the first rotating disk 3 is provided with a first notch 31, and the first fixed disk 4 is provided with a second notch 41 matched with the first notch 31.

Referring to fig. 2, the lower air-lock mechanism includes a second rotary disk 5 matched with the inner diameter of the housing 1 and a second fixed disk 6 disposed on the lower surface of the second rotary disk 5; the second rotating disc 5 is fixedly connected with the rotating shaft 2, and the second fixed disc 6 is fixedly connected with the shell 1; a third notch 51 matched with the second notch 41 is formed in the second rotating disc 5, and a fourth notch 61 matched with the third notch 51 is formed in the second fixed disc 6; the first notch 31 and the third notch 51 are arranged in a staggered manner in the longitudinal direction, and the second notch 41 and the fourth notch 61 are arranged in the same position in the longitudinal direction.

Referring to fig. 2, the first notch 31 and the third notch 51 are arranged oppositely in the longitudinal direction. The interval time for opening the first notch of the upper layer air locking mechanism and the third notch of the lower layer air locking mechanism is maximized, so that the sealing performance and the dust exhaust efficiency are effectively guaranteed.

Referring to fig. 2, the first notch 31, the second notch 41, the third notch 51 and the fourth notch 61 are all central angles, and the central angle is 90 degrees

The ends of the first fixed disk 4 and the second fixed disk 6 adjacent to the rotating shaft 2 are provided with elastic sealing gaskets (not shown in the figure), and the elastic sealing gaskets can be made of rubber, so that the sealing performance between the first fixed disk and the rotating shaft and the sealing performance between the second fixed disk and the rotating shaft can be ensured.

The first rotating disc 3, the first fixed disc 4, the second rotating disc 5 and the second fixed disc 6 are all made of steel structures.

The working principle is as follows: when the device works, the power mechanism drives the rotating shaft to rotate, and further drives the first rotating disc and the second rotating disc which are fixedly connected with the rotating shaft to synchronously rotate; when the first notch on the first rotating disc rotates to overlap with the second notch on the first fixed disc, dust above the upper air locking mechanism sequentially passes through the first notch and the second notch to reach a space between the upper air locking mechanism and the lower air locking mechanism. Because the first gap and the third gap are arranged in a staggered manner in the longitudinal direction, when the first gap of the upper layer air locking mechanism is opened, the third gap of the lower layer air locking mechanism is in a closed state; the pivot continues rotatory 1/2 circles, and when the first breach of upper strata air-lock mechanism was closed, the third breach of lower floor air-lock mechanism was in the open mode, was located between upper strata air-lock mechanism and the lower floor air-lock mechanism dust and dropped to lower floor air-lock mechanism below, then discharges through the ash bucket. Compared with the traditional heavy hammer type air locker, the rotary air locker of the utility model discharges dust in a subsection way through the double-layer air locking mechanism, thereby ensuring the sealing performance of the air locker, avoiding the occurrence of air leakage and improving the dust removal effect; the device drives the rotating shaft to rotate through the power mechanism so as to open or close the corresponding notch, so that the operation is stable, and the air locker cannot be damaged; in addition, the air locking device of the device is in continuous action, the situation that a large amount of dust is discharged suddenly due to more dust in the air is avoided, and the dust discharging speed is uniform and stable.

Example two

Referring to fig. 1 and 2, the first rotary disk 3 is provided at an upper surface thereof with a first scraper 7 fixedly connected to the housing 1. The upper surface of the second rotating disc 5 is provided with a second scraper 8 fixedly connected with the shell 1. At first rotary disk pivoted in-process, first scraper blade can hang the dust attached to first rotary disk upper surface and fall, avoids the dust more in first rotary disk upper surface, blocks up first breach, the effectual dust exhaust efficiency of having guaranteed. In the rotating process of the second rotating disc, the second scraper can hang down the dust attached to the upper surface of the second rotating disc, the situation that more dust is accumulated on the upper surface of the second rotating disc and blocks the third notch is avoided, and dust exhaust efficiency is effectively guaranteed.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The rotary air lock comprises a hollow cylindrical shell (1), and is characterized in that an upper air lock mechanism and a lower air lock mechanism are arranged in the shell (1);

a rotating shaft (2) connected with the upper layer air locking mechanism and the lower layer air locking mechanism is arranged in the shell (1) along the axial direction of the shell, and a power mechanism for driving the rotating shaft (2) to rotate is arranged at the end part of the rotating shaft (2);

the upper layer air locking mechanism comprises a first rotating disc (3) matched with the inner diameter of the shell (1) and a first fixed disc (4) arranged on the lower surface of the first rotating disc (3); the first rotating disc (3) is fixedly connected with the rotating shaft (2), and the first fixing disc (4) is fixedly connected with the shell (1); a first notch (31) is formed in the first rotating disc (3), and a second notch (41) matched with the first notch (31) is formed in the first fixing disc (4);

the lower-layer air locking mechanism comprises a second rotating disc (5) matched with the inner diameter of the shell (1) and a second fixed disc (6) arranged on the lower surface of the second rotating disc (5); the second rotating disc (5) is fixedly connected with the rotating shaft (2), and the second fixed disc (6) is fixedly connected with the shell (1); a third notch (51) matched with the second notch (41) is formed in the second rotating disc (5), and a fourth notch (61) matched with the third notch (51) is formed in the second fixed disc (6);

the first notch (31) and the third notch (51) are arranged in a staggered mode in the longitudinal direction, and the second notch (41) and the fourth notch (61) are arranged in the same position in the longitudinal direction.

2. A rotary airlock according to claim 1, wherein said first notch (31) and said third notch (51) are longitudinally oppositely disposed.

3. A rotary airlock according to claim 1, wherein said first rotary disk (3) is provided on its upper surface with a first scraper (7) fixedly connected to the housing (1).

4. A rotary airlock according to claim 1, wherein said second rotary disk (5) is provided on its upper surface with a second scraper (8) fixedly connected to the housing (1).

5. A rotary airlock according to claim 1, wherein the ends of the first stationary disk (4) and the second stationary disk (6) adjacent to the shaft (2) are provided with elastic gaskets.

6. A rotary airlock according to claim 1, wherein said first rotary disk (3), first fixed disk (4), second rotary disk (5) and second fixed disk (6) are made of metal.

7. The rotary airlock of claim 1, wherein said power mechanism is a continuously variable motor.