JPS6036808B2 - Louver type dust collector - Google Patents

Description

[Detailed description of the invention] Inertial dust collectors have a structure in which dust-containing gas collides with a baffle or the like to rapidly change the direction of the airflow, and particles are separated and collected by the inertial force. Inertial dust collectors are required to simultaneously satisfy contradictory factors of increasing dust collection efficiency as much as possible and minimizing pressure loss as much as possible.

In the secondary louver type dust collector, when the gas amount, gas velocity, and dust concentration are respectively assumed values, the two
In order to ensure that the conditions are met simultaneously, the baffle is fixed at a fixed angle to the gas flow and cannot be changed. In such a case, the setting angle of the baffle is not necessarily optimal, and there is a drawback that the two contradictory conditions mentioned above cannot be satisfied.

The present invention relates to a louver-type dust collector that eliminates the above-mentioned drawbacks, and in which the airflow collides with a plate-shaped baffle arranged in the airflow to rapidly change the direction of the flow. In a louver-type dust collector that separates and collects dust, multiple plate-shaped baffles are fixed to both side plates at predetermined intervals.
A changing operation mechanism in which blocks are arranged side by side and have baffle groups, the blocks are pivotally mounted in a casing via the both side plates, and the projected area of the baffle group with respect to the airflow is greatly changed via the both side plates. To provide a louver type dust collector with a very simple structure, which can perform optimal dust collection depending on the gas state and can also be used in a normal duct state.

The present invention provides a louver-type dust collector that causes the airflow to collide with a plate-shaped baffle arranged in the airflow to rapidly change the direction of the flow and separate and collect the dust contained in the airflow. In the device, a plurality of plate-shaped baffles are fixed to both side plates at predetermined intervals and arranged side by side to form a block having a baffle group, the block is pivotally mounted in a casing via the both side plates, and the block is mounted in a case via the both side plates. Since the changing operation mechanism is configured to greatly change the projected area of the baffle group with respect to the airflow, when the dust concentration is high, the baffle group's projected area is increased through the side plates of the block. Rotating the baffle group increases the pressure loss to some extent, but improves the dust collection efficiency and removes dust sufficiently, reducing the dust concentration of the gas suitable for flowing through the dust collector to below the required value. In addition, if the dust concentration is low and high dust collection performance is not required, rotating the baffles so that the projected area of the baffle group becomes smaller will reduce the dust collection efficiency. If the dust concentration in the gas after passing can be ensured below the required value and the pressure loss can be significantly reduced, and furthermore, if the dust concentration is extremely low and dust collection is not required, the baffle group can be By placing them in a parallel state, the flow resistance inside the casing is significantly reduced, and it can be used as a duct, allowing for a wide range of adjustment operations.

Furthermore, the present invention provides a block having a baffle group by fixing and arranging a plurality of plate-shaped baffles at predetermined intervals on both side plates pivotally mounted in the casing, and preventing air from flowing through the baffle group through the side plates. Since it has a change operation mechanism that greatly changes the projected area, the projected area of the baffle group can be changed extremely easily and greatly, eliminating variations in the projected area of each plate-shaped baffle in the baffle group, significantly improving dust collection efficiency. In addition, by significantly swinging the baffle group through the side plates, the interior of the casing can be opened over a wide area, greatly reducing resistance to airflow, and can be operated in the same state as a normal duct. .

As described above, the structure of the present invention is extremely simple, and the projected area of the baffle group relative to the airflow (dust-containing gas) can be changed and adjusted very easily and significantly. Since there is no variation in the adjustment projected area, it is possible to adjust the dust collection performance to the optimum in response to changes in the state of the dust-containing gas, improve dust collection efficiency and reliability, and reduce pressure loss to a minimum. This has the effect of improving acid collection performance and reducing pressure loss.Furthermore, the inside of the casing is opened over a wide area to significantly reduce flow resistance, allowing it to be used in the same way as a regular duct. It has an effect.

Hereinafter, one embodiment of the present invention will be described. In the figure, 1 is a casing (duct) through which dust-containing gas a flows, and two groups of fixed blades are arranged in the downstream part of the casing 1. The structure is such that the airflow of the dust-containing gas a is changed from the arrow direction A to the arrow direction opening by two groups of fixed vanes, and a plurality of plate-shaped baffles 4 are arranged at a predetermined interval between the side plates 3 and 3. As shown in the figure, blocks 3, 3, 4 are fixedly arranged in parallel and have four groups of buttfuls, and the blocks 3, 3, 4
is pivotably mounted inside the casing by shafts 5 provided on both side plates 3, 3, and the above-mentioned Boo.

The side plates 3, 3 of the racks 3, 3, 4 are largely swung around the shaft 5 on the upstream side of the 2 groups of fixed blades as shown in 1, b, m in the figure, and the desired swiveling operation is performed. fixed in position,
A changing operation mechanism is configured in which the projected area of the plurality of plate-shaped baffles 0, 4 groups of baffles, for the airflow of the dust-containing gas a can be largely changed and adjusted. Further, a storage casing 10 for collecting dust is installed below the 4 groups of baffles and 2 groups of fixed blades in the casing 1, and the collected dust in the storage casing 10 can be taken out from the lower lid 10a. .

Since the embodiment of the present invention has the above-described configuration, the projected area of the four groups of baffles with respect to the airflow of the dust-containing gas a is controlled through the side plates 3, 3, for example, as shown in the figure 1, 0, m. The projected area can be adjusted to accommodate changes in the amount of the dust-containing gas a, changes in gas velocity, changes in the amount of dust, etc. due to changes in the gas generation source (not shown). , each can collect dust with optimal dust collection performance.

In the louver type dust collector, generally speaking, if other conditions are the same, the larger the airflow resistance, or pressure loss, due to the baffle group, the higher the dust collection efficiency.For example, if the dust concentration is high, the baffle When the projected area of the fourth group is changed greatly, the pressure loss increases to some extent, but the dust collection efficiency is increased and dust can be removed sufficiently, and the dust concentration after flowing can be reduced to below the required value. If the dust concentration is low and high dust collection performance is not required, the projected area of the 4 groups of baffles should be reduced to an appropriate degree to reduce the dust concentration after flowing to the required value or less and reduce the pressure loss, although this will reduce the dust collection efficiency. Furthermore, if the dust concentration is extremely low and dust collection is not required, the 4 groups of baffles are significantly swung to widen the interior of the casing 1, and the plate surface of each plate-shaped baffle 4 is exposed to the airflow. They can be placed in a parallel state (for example, in the ``ro'' position shown in the figure), and the air flow resistance, that is, pressure loss due to the baffle group, can be significantly reduced, and the inside of the casing can be used like a normal duct.

Also, both side plates 3, which are pivotally mounted (shaft 5) inside the casing 1,
3, a plurality of plate-shaped baffles 4 are fixed at predetermined intervals and arranged in parallel to form a block 3, 3, 4 having four groups of baffles, thereby increasing the projected area of the four groups of baffles against the airflow through the side plates 3, 3. Since it is configured to change and adjust, the projected area can be changed and adjusted very easily and greatly, and the variation in the projected area of each plate-shaped baffle 4 is eliminated, and the dust collection efficiency is significantly improved. In addition, as the dust collection efficiency and reliability are improved, the projected area and the pressure loss can be reduced, and the two conventional conditions of improving the dust collection performance and reducing the pressure loss can be satisfied at the same time. . In the above embodiment, a shaft is provided at one end of both side plates, but it is also possible to provide a shaft at the center of both side plates and use it as the center of rotation. It is not limited to those set up.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

The attached drawing is a longitudinal mechanical diagram showing one embodiment of the present invention. 1: Casing, 3: Both side plates, 4: Plate baffle, 5:
Axis (pivot).

Claims (1)

[Claims] 1. A louver-type dust collector that collides the airflow with a plate-shaped baffle placed in the airflow to rapidly change the direction of the flow to separate and collect dust contained in the airflow,
A plurality of plate-shaped baffles are fixed to both side plates at predetermined intervals and arranged in parallel to form a block having a group of buffles, and the block is pivotally mounted in the casing via the both side plates, and the airflow is controlled through the both side plates. A louver-type dust collector, characterized in that the louver-type dust collector is configured with a changing operation mechanism that greatly changes the projected area of the baffle group.