JPS6257384B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dust collector that continuously performs air overflow dust collection.

Generally, it is well known that synthetic chemical fibers tend to be charged with static electricity due to friction, etc., and in this case, they exert an adsorption effect on other dusty substances. The present invention takes advantage of this property and constructs an over-tube in which foot-long over-members made of chargeable fibers are tightly fixed at one end so as to be aligned in the circumferential direction over the entire outer circumferential surface. Static electricity is charged externally using a high-voltage power supply, and fine dust in the air is attracted and collected as the overtube continuously rotates.
The present invention provides a device that delivers clean air.

If this type of dust collector equipped with a rotating drum-type overtube is operated continuously for a long period of time, the overcapacity will inevitably decrease over time due to clogging of the material. It must be stopped and materials replaced or regenerated. On the other hand, in the dust collector according to the present invention, the over member made of synthetic chemical fiber and exhibiting an electrostatic dust collection function rotates together with the cylinder, and the dust attached in one half rotation is removed in the next half rotation, so that the dust is constantly maintained. Since it is constructed so that air passes through a clean surface that has been cleaned and removed, no clogging occurs in the overlayer, and continuous operation with stable overcapacity is possible. On the other hand, the filtered dust is deposited and accumulated in the lower damper chamber, and can be discharged without stopping the operation of the device.

In order to perform the continuous dust collection function as described above, the present invention has an outer casing consisting of an upper chamber having an air intake port and a lower dust chamber damper chamber, and an outer casing of a perforated cylindrical body member with one end closed and the other end open. The tube is provided with a tube made of chargeable fibers arranged in the circumferential direction over the entire surface of the tube, and one end of each tube is tightly fixed to the tube, and the tube is installed in the tube chamber so as to rotate slowly; A vertical lattice electrode is provided on the side opposite to the air intake port, and a roller electrode is provided at the lower part of the same side as the air intake port so as to come into contact with the over member when the over-tube rotates. A suction blocking plate is fixedly provided at a position facing the vertical grid electrode along the circumferential surface, a suction duct having a fan or the like is connected to the open end of the tube, and the damper chamber is provided with a suction blocking plate at a position opposite to the vertical grid electrode. A high-speed suction slit and a slow-speed suction port communicating with the overchamber are provided near the roller electrode and the roller electrode, respectively, so that continuous air over-collection can be carried out.

Next, an example of implementation of the present invention will be described in detail based on the drawings.

1 is an outer casing with a large air intake port 2 on the front side, an overchamber 3 at the top, and a damper chamber 4 for collecting dust at the bottom. It is mounted so that it rotates slowly. The over-tube 5 has a cylindrical body plate with one end closed and the other end open, with a large number of small holes 7, 7, etc. formed therein. The cover members 8 are tightly fixed at one end so as to be aligned in the circumferential direction.

For the porous cylindrical body member 6, in addition to a metal member with a large number of holes, for example, a wire mesh cylinder can be used, and depending on the type, the diameter is about 30 cm to 1 m, and the length is about three times the diameter. It can be designed as appropriate.

As shown in FIG. 3, the cover member 8 is made up of very thin long single fibers tightly entwined with each other in a network shape, and has a diameter of 1.
Cut a thread-like material less than 5 mm wide or a piece of cloth about 5 mm wide to a length of 10 cm to 15 cm, sew one end, and fix this in the direction of the generatrix of the cylindrical surface of the porous cylindrical body member 6. The entire cylindrical surface is covered with a pitch of 5 mm to 5 mm. In general, the cover member 8 may be made of a fiber material that is easily charged with static electricity due to friction or the like and has an adsorption effect on dust particles floating in the air, and a synthetic chemical fiber material is suitably used.

An arc-shaped vertical grid electrode 10 is arranged along the rear wall 9 on the side opposite to the air intake port 2 of the outer casing 1, and a roller electrode 11 is arranged at the lower part on the same side as the air intake port 2. However, these vertical lattice electrodes 10 and roller electrodes 11 are provided at positions such that when the overtube 5 rotates, they come into contact with the spirally radially extending portions of the overtube 8 .

The vertical grid electrode 10 can be at a positive potential, negative potential, or earth potential with respect to the potential of the roller electrode 11.
It is appropriate to operate with a potential difference of about 3000V.

A suction blocking plate 12 is fixedly provided on the side facing the vertical grid electrode 10 along the inner circumferential surface of the overtube 5,
Even if a suction force is applied to the inside of the overtube 5, air containing dust etc. is not sucked in from the suction blocking plate 12 side. In addition, the lower part of the over-tube 5 is relatively close to the upper wall 13 of the damper chamber 4, and when the over-tube 5 rotates, the over-member 8 falls down in the circumferential direction and rubs against the upper wall 13, causing dust etc. It is designed to prevent it from migrating to the intake port 2 side.

A suction duct 15 having a fan 14 is connected to the open end of the over-tube 5, and by operating the fan 14, the inside of the over-tube 5 is maintained in a suction state, and clean air is released from the outlet 16 of the suction duct 15. do.

In the damper chamber 4 at the lower part of the outer casing 1, there is a partition plate 18 for forming an air flow path 17 that bends up and down.
18... are provided, and grids or nets 19, 19... for preventing dust from flying up are provided in the airflow rising portion of the passage 17. Also, the damper chamber 4 has an upper wall 13
Near the bottom of the vertical grid electrode 10 and the roller electrode 11
A high-speed suction slit 20 and a slow-speed suction port 21, each communicating with the overchamber 3, are provided nearby.

In the operation of the embodiment apparatus having the above-mentioned structure, dust collection is performed as follows. That is, the fan 14 is operated to bring the inside of the over-tube 5 into a suction state, and the over-tube 5 is rotated in the direction of the arrow at a slow rotation rate of about 5 to 10 revolutions per minute. In this case, the leg-long over member 8 is tightly attached at one end so as to be aligned in the circumferential direction so as to cover the entire outer surface of the porous cylindrical body member 6, so that it extends in a spiral radial shape. On the side of the air intake port 2 where the suction force acts through the small holes 7, 7, .

On the other hand, on the side of the suction blocking plate 12, it receives an electrostatic attraction action based on the potential of the vertical grid electrode 10, and becomes a slightly erect spiral radial shape, moving in the direction of the arrow in the figure.

The vertical lattice electrode 10 and the roller electrode 11 are arranged on both sides of the over-tube 5 and in contact with the over-member 8 when the over-tube 5 rotates. A negative potential is applied to the roller electrode 11, and a positive potential is applied to the roller electrode 11. When the over-tube 5 is slowly rotated in the direction of the arrow, the over-member 8 made of synthetic chemical fiber or the like becomes positively charged by contact with the roller electrode 11, and forms an over-layer as described above, so that dust in the outside air is removed. Not only does it physically prevent dust from flowing into the inside of the overtube 8, but it also exerts an electrostatic adsorption action to prevent dust particles smaller than the fineness of the fiber overtube 8 from flowing into the inside of the overtube 8. can be prevented.

The over member 8, which has moved from the roller electrode 11 side to the vertical grid electrode 10 side having a different polarity as the over cylinder 5 rotates, is attracted to the strongly negatively charged vertical grid electrode 10, and by contacting it, becomes electrically neutralized. At the same time, the dust that has been electrostatically adsorbed on the cover member 8 is also neutralized and is released from the electrical attraction force. At this time, since the passer member 8 has a slightly erect spiral radial shape as described above, the adhering dust easily separates from the passer member 8, and as the passer member 5 rotates, the passer member 8 moves toward the vertical grid electrode 10 side. It is collected at the bottom of 2.

Since the suction blocking plate 12 is fixedly disposed along the inner peripheral surface of the over-tube 5 on the side of the vertical grid electrode 10, a pressure difference occurs between the roller electrode 11 side and the vertical grid electrode 12 side in the over chamber 2. The pressure tends to be somewhat negative on the roller electrode 11 side.

A damper chamber 4 is provided near the lower end of the vertical grid electrode 10.
A slit 20 is provided leading to the roller electrode 1.
If a suction port 21 is provided near 1 and the area ratio of the suction port 21 to the slit 20 is made sufficiently large,
High speed air flows into the slit 20 due to atmospheric pressure, and the dust separated from the over member 8 is sent into the damper chamber 4. The flow path within the damper chamber 4 is bent up and down by the partition plates 18, 18, and reaches the suction port 21, but if the cross-sectional area of the flow path within the damper chamber 4 is also made sufficiently larger than the area of the slit 20, The flow velocity in the damper chamber 4 becomes very slow compared to the velocity of the air flowing into the slit 20, and the dust can be caused to settle to the bottom of the damper chamber 4. Furthermore, the net 19 and the like provided in the rising part of the air in the damper chamber 4 prevent settled dust from flying up.

The over member 8 from which dust has been brushed off on the vertical grid electrode 10 side of the over chamber 2 slides into contact with the upper wall 13 of the damper chamber 4 and the roller electrode 11 as the over cylinder 5 rotates, and becomes positively charged. The air then circulates back to the air intake port 2. The dust accumulated at the bottom of the damper chamber 4 is discharged to the outside of the machine by an appropriate discharge means.

As is clear from the above explanation, in the dust collector of the present invention, the over member made of synthetic chemical fiber etc. forms an over layer on the surface of the over cylinder and rotates, removes the attached dust in half a rotation, and removes the attached dust in the next half rotation. Since the air is passed through a surface that is constantly cleaned by rotation, there is no clogging of the overflow member, and continuous operation can be performed for a long period of time.
In addition, despite the relatively simple structure that is easy to maintain, the dust collection efficiency is extremely high because fine dust in the air is captured by the over member using the suction action of the fan and the adsorption action of electrostatic force. It is.

[Brief explanation of the drawing]

Fig. 1 is a partially broken side view showing an embodiment of the dust collector according to the present invention, Fig. 2 is a cross-sectional view taken along the line A--A in Fig. 1, and Fig. 3 is a partially broken side view of the over member fixation mode. It is a diagram. 1... Outer casing, 2... Air intake port, 3... Over chamber, 4... Damper chamber, 5... Over tube, 6... Porous cylindrical body member, 7... Small hole, 8... Over member , 9
... Rear wall, 10 ... Vertical grid electrode, 11 ... Roller electrode, 12 ... Suction blocking plate, 13 ... Upper wall, 14
... Fan, 15 ... Suction duct, 16 ... Outlet, 17 ... Air flow path, 18 ... Partition plate, 19 ...
...net, 20...slit, 21...suction port.

Claims (1)

[Claims] 1. An outer casing consisting of an upper overchamber with an air intake port and a lower damper chamber for dust collection, and a perforated cylindrical body member whose one end is closed and the other end is open. The over-tube is mounted in the over-tube chamber so as to rotate slowly, and is in contact with the over-member when the over-tube is rotated. A vertical grid electrode is disposed on the opposite side of the air intake port, and a roller electrode is disposed on the lower part of the same side as the air intake port, and a roller electrode is disposed on the inner peripheral surface of the cylinder at a position opposite to the vertical grid electrode. A suction blocking plate is fixedly provided, a suction duct having a fan or the like is connected to the open end of the over-tube, and high-speed suction is connected to the over-chamber near the bottom of the vertical grid electrode and near the roller electrode in the damper chamber. A dust collector characterized in that it is equipped with a slit and a slow-speed suction port, and is capable of continuous air-excess dust collection.