JP2009050792A - Dust collector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collector excellent in suction power and capable of exerting effective dust removal. <P>SOLUTION: The dust collector 1 has a blow means 2 blowing compressed gas to a surface 5 with dust to be removed to which dust 6 adheres, and a suction means 3 sucking the dust 6 having whirled up by blowing the compressed gas. The suction means 3 has a suction flow path 30 opening to the front edge side, on which a tornado fin 31 making a suction gas stream 41 spiral is disposed. The blow means 2 has a plurality of blow nozzles 20 ejecting the compressed gas at the front edge part 10 of the dust collector 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a dust removing device for removing dust attached to a dust removal surface.

For example, in a painting line for an automobile body, dust may adhere to the surface of an automobile body (hereinafter referred to as a dust removal surface), and therefore, a dust removal process for removing the dust is provided (for example, patent document). 1).
In this dust removal step, for example, there are an air blow method in which compressed air is blown to the surface to be removed to blow away dust, a suction method in which dust is sucked by a suction means, a varnish cloth wipe method in which dust is wiped off with a cloth, etc. Used.

However, in the above air blowing method, there is a risk that dust that has been blown up by compressed air will adhere again to the surface to be removed.
Further, in the above suction method, since the suction port is open to the atmosphere, the suction force may be dispersed and it may be difficult to sufficiently suck the dust.

Also, in the above varnish cloth wiping method, if the surface to be removed has a complicated shape such as a recess, it is difficult to sufficiently wipe off the dust, and it is necessary to purchase a consumable cloth. The cost of the varnish cloth wiping method may increase. Moreover, there is a possibility that the adhesive material adhering to the cloth may adhere to the dust removal surface.
Moreover, even if the above three methods are combined, there is a problem that the working efficiency cannot be sufficiently improved.

JP-A-2005-34786

  The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a dust removing device that is excellent in suction force and can efficiently remove dust.

The present invention is a dust removing apparatus having a blow unit that blows compressed gas onto a dust removal surface to which dust has adhered, and a suction unit that sucks dust that has risen by blowing the compressed gas.
The suction means has a suction channel that opens on the tip side, and a tornado fin that makes the suction airflow spiral is disposed in the suction channel,
The blow means is provided in a dust removing device having a plurality of blow nozzles for discharging the compressed gas at a tip portion of the dust removing device.

Next, the effects of the present invention will be described.
The dust removing apparatus of the present invention has the blow means and the suction means. As a result, compressed air is blown onto the dust removal surface by the blowing means, so that the dust adhering to the dust removal surface can be separated from the dust removal surface, and the rising dust can be immediately sucked by the suction means. As a result, dust removal on the dust removal surface can be performed efficiently.

  Moreover, the tornado fin which makes a suction airflow spiral is arrange | positioned at the suction flow path. As a result, the suction airflow in the vicinity of the extension line on the distal end side of the suction flow path can be spiraled to generate a suction airflow having a strong suction force. Therefore, it is possible to efficiently suck the dust that is blown up by the compressed gas.

Further, the tornado fins can provide a stable spiral suction airflow in the vicinity of the extension line on the distal end side of the suction flow path. That is, the suction airflow is not disturbed even when the compressed gas is blown, and the dust can be sufficiently sucked while maintaining the spiral airflow.
Furthermore, as described above, the suction airflow is swirled by the tornado fins, so that the suction force can be maintained even at a position further away from the distal end portion of the suction flow path, and the dust is sufficiently sucked. Can do. Therefore, the tip of the dust removing device and the dust removal surface can be sufficiently separated from each other to prevent contact between the two, so that the dust removing step can be automated by operating the dust removing device by, for example, a robot. Thereby, the dust removal apparatus which can remove dust efficiently can be obtained.

  As described above, according to the present invention, it is possible to provide a dust removing device that is excellent in suction force and can perform dust removal efficiently.

The present invention (Claim 1) can be used for various applications such as a painting line for automobile bodies.
Examples of the dust removal surface include a surface to be painted before painting, more specifically, a car body surface of an automobile.
Further, in this specification, the side (left side in FIG. 1) facing the dust removing surface of the dust removing device will be described as the front end side, and the opposite side (right side in FIG. 1) will be described as the base end side.

Moreover, it is preferable that the said dust removal apparatus has a static elimination apparatus for neutralizing the said dust (Claim 2).
In this case, the dust attached to the dust removal surface can be removed by electrostatic force in a charged state, and the dust can easily rise from the dust removal surface. Further, since the dust is neutralized, it is possible to prevent the dust from adhering to the dust removal surface again. Thereby, dust removal can be performed more efficiently.

Further, it is preferable that the plurality of blow nozzles are arranged in a state of being inclined with respect to the axial direction of the suction flow path so as to be directed inward toward the distal end side.
In this case, when the compressed gas is blown from the blow nozzle onto the dust removal surface, the dust can be blown inward. As a result, it is possible to prevent dust from being collected on the extension line of the suction channel and scattered to the outer periphery of the suction channel. As a result, the soaring dust can be efficiently sucked by the suction means, and dust can be efficiently removed.

Further, it is preferable that three or more of the plurality of blow nozzles are arranged on the same circumference centering on the central axis of the suction flow path.
In this case, dust can be collected on the extension line of the suction flow path more efficiently, so that dust removal can be performed more efficiently.
In addition, it is desirable to arrange four or more blow nozzles.

The plurality of blow nozzles are preferably arranged at equal intervals (claim 5).
In this case, dust can be collected more efficiently on the extension line of the suction flow path, so that dust removal can be performed more efficiently.

Moreover, it is preferable that the front-end | tip part of the said suction flow path is a taper shape which expands as it goes to a front end side.
In this case, since the suction airflow can be easily spiraled at the front end of the suction flow path, a dust removing device with even better suction power can be obtained.
In addition, it is preferable that the front-end | tip part of a suction channel inclines 30-60 degrees with respect to the central axis of a suction channel.

(Example 1)
A dust removing apparatus according to an embodiment of the present invention will be described with reference to FIGS.
1 is a cross section taken along line BB in FIG. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and one of the eddy current generating blades 310 does not originally appear in the cross section, but is shown by a broken line for convenience of explanation.
As shown in FIG. 1, the dust removing apparatus 1 of the present example includes a blow unit 2 that blows compressed gas onto a dust removal surface 5 to which dust 6 adheres, and a suction unit 3 that sucks dust 6 that has risen by blowing compressed gas. And have.

  As shown in FIGS. 1 to 3, the suction means 3 has a suction flow path 30 that opens to the front end side, and a tornado fin 31 that spirals a suction air flow 41 is disposed in the suction flow path 30. Has been. In this example, the tornado fins 31 are arranged in a state where two flat vortex generating blades 310 are inclined with respect to the central axis of the suction flow path 30 as shown in FIG. That is, as shown in FIG. 1 to FIG. 3, the vortex generating blade 310 is arranged so as to be disposed toward the back of the suction channel 30 as it proceeds from the blade tip 311 toward the blade base end 312. It is fixed inside. The tornado fins 31 are not limited to the above configuration, and can be configured in various shapes as long as the suction air flow 41 can be formed in a spiral shape.

The blow means 2 has a plurality of blow nozzles 20 that discharge compressed gas at the tip portion 10 of the dust removing device 1.
And the some blow nozzle 20 is arrange | positioned in the state inclined with respect to the axial direction of the suction flow path 30 so that it might go inside toward the front end side. In this example, the blow nozzle 20 is disposed around the front end portion of the suction flow path 30 in a state where the blow nozzle 20 is inclined 45 ° inward toward the front end side with respect to the central axis of the suction flow path 30. ing.

  Further, three or more blow nozzles 20 are arranged on the same circumference around the central axis of the suction flow path 30. In this example, as shown in FIGS. 3 and 5, four blow nozzles 20 having a diameter of 0.8 mm are arranged at equal intervals in the tip portion 10 of the dust removing device 1.

As shown in FIG. 1, the distal end portion of the suction channel 30 has a tapered shape whose diameter increases toward the distal end side. In this example, the tip of the suction channel 30 has a tapered shape that is inclined by 45 ° with respect to the central axis of the suction channel 30.
Further, the dust removing apparatus 1 of this example includes an air-passing type static eliminator 121 and a static elimination space generating electrode 122 which are the static eliminator 12 for neutralizing the dust 6.

Next, the operation of the dust removing apparatus 1 of this example will be described. In this example, the dust removal surface 5 is the surface of the vehicle body before painting.
As shown in FIG. 1, a grip 11 having a trigger 110 for starting and stopping the dust removing device 1 is disposed below the dust removing device 1.
By pulling the trigger 110, the dust removing device 1 is activated, and the suction gas 3 is generated by the suction means 3 at the same time as the compressed gas is discharged from the blow nozzle 2.
Note that the pressure and flow rate of the compressed gas and the suction air flow 41 can be set to preset values, or can be set by parameters of cooperative control.

The operation of the blowing means 2 will be described.
In this example, the compressed gas is air. For example, air compressed at a pressure of 0.1 MPa is stored in a tank (not shown).
Then, by pulling the trigger 110, the valve provided in the dust removing device 1 is opened, and the compressed air flows into the blow air flow path 22 of the blow means 2. At this time, the compressed air is neutralized when it passes through the electrode portion 23 in the air-passing static eliminator 121.

The compressed air passes through a distribution channel 21 provided on the base end side of the blow air channel 22 and is distributed to each blow air channel 22. Next, the air is discharged from the blow nozzle 20 formed at the tip of each blow air flow path 22 to the dust removal surface 5, that is, in the direction of the compressed air flow 42 shown in FIG. In this example, the compressed air is discharged onto the dust-removed surface 5 with an inclination of 45 ° toward the inner side as it goes toward the tip side.
In addition, in this example, compressed air is sprayed in the state which 20-20 mm apart the front-end | tip part 10 and the to-be-deposited surface 5 of the dust removal apparatus 1. FIG.

  Further, as shown in FIG. 1, the discharged compressed air is neutralized by passing between the static elimination space generating electrodes 122 formed at the tip of the suction flow path 30. The static elimination space generation electrode 122 neutralizes not only the compressed air but also the space around the static elimination space generation electrode 122.

  Then, the dust 6 adhering to the dust removal surface 5 is blown by the compressed air from the blow means 2 as described above, and moves away from the dust removal surface 5. At this time, even if the dust 6 is charged and adhered to the dust removal surface 5, the dust 6 is also neutralized by the compressed air that has been eliminated, and is easily separated from the dust removal surface 5. Further, the dust 6 that has risen does not scatter to the outer periphery of the tip of the suction channel 30, and as shown in FIGS. 1 and 4, on the extension line of the suction channel, that is, inside the tip of the suction channel 30. Gather together.

Next, the operation of the suction means 3 will be described.
The suction means 3 is connected to a suction device (not shown) disposed on the base end side of the dust removing device 1. By pulling the trigger 110, an air flow toward the suction device is generated, and a suction air flow 41 is generated in the suction means 3. Here, as described above, the tornado fins 31 are disposed in the suction flow path 30, and the suction airflow 41 is spiraled by passing through the tornado fins 31. Then, the suction air flow 41 is generated in a spiral shape on the distal end side of the distal end portion of the suction flow path 30. In this example, the suction air flow 41 flows so as to form a clockwise vortex as shown in FIG. 5 when viewed from the front end side of the dust removing device 1.

Then, the dust 6 rises from the dust removal surface 5 by the compressed air discharged from the blow nozzle 20, and is instantly sucked by the spiral suction air flow 41 without being scattered on the outer periphery of the tip end portion of the suction flow path 30. The suction is continued from the tip of the passage 30 into the dust removing device 1.
Thereafter, the dust 6 further passes through the suction channel 30 and is carried to a collection container (not shown).

Next, the function and effect of this example will be described.
The dust removing apparatus 1 of this example includes a blow unit 2 and a suction unit 3. As a result, compressed air is blown onto the dust removal surface 5 by the blow means 2, and the dust 6 adhering to the dust removal surface 5 is separated from the dust removal surface 5, and the soaring dust 6 is immediately removed by the suction means 3. Can be aspirated. As a result, the dust removal surface 5 can be efficiently removed.

  Further, a tornado fin 31 that makes the suction air flow 41 spiral is disposed in the suction flow path 30. As a result, the suction air flow 41 in the vicinity of the extension line on the distal end side of the suction channel 30 can be spiraled to generate the suction air flow 41 having a strong suction force. Therefore, it is possible to efficiently suck the dust 6 that has been blown up by the compressed gas.

Further, the tornado fin 31 can provide a stable spiral suction airflow 41 in the vicinity of the extension line on the distal end side of the suction flow path 30. That is, the suction air flow 41 is not disturbed even when the compressed gas is blown, and can sufficiently suck the dust 6 while maintaining the spiral air flow.
Furthermore, by making the suction airflow 41 spiral by the tornado fins 31 as described above, the suction force can be maintained even at a position further away from the distal end portion of the suction flow path 30, and the dust 6 can be sufficiently absorbed. Can be aspirated. Therefore, since the tip part 10 of the dust removing device 1 and the dust removal surface 5 can be sufficiently separated to prevent contact between them, the dust removing device 1 is operated by, for example, a robot to automate the dust removing process. be able to. Thereby, the dust removal apparatus 1 which can remove dust efficiently can be obtained.

  Moreover, since the dust removal apparatus 1 has the static elimination apparatus 12 for neutralizing the dust 6, the dust 6 adhering to the dust removal surface 5 by the electrostatic force in the charged state can be eliminated, and the dust removal surface 5 The dust 6 can be easily raised. Further, since the dust 6 is neutralized, it is possible to prevent the dust 6 from adhering to the dust surface 5 again. Thereby, dust removal can be performed more efficiently.

  In addition, the plurality of blow nozzles 20 are disposed in an inclined state with respect to the axial direction of the suction flow path 30 so as to be directed inward toward the distal end side, and centered on the central axis of the suction flow path 30. Four are arranged at equal intervals on the same circumference. Thereby, when compressed air is blown from the blow nozzle 20 onto the dust removal surface 5, the dust 6 can be reliably blown inward. As a result, it is possible to suppress the dust 6 from being collected on the extension line of the suction channel 30 and being scattered to the outer periphery of the suction channel 30. As a result, the dust 6 that has risen can be efficiently sucked by the suction means 3, and dust can be efficiently removed.

  Moreover, the front-end | tip part of the suction flow path 30 is a taper shape which expands in diameter as it goes to the front end side. As a result, the suction air flow 41 can be easily spiraled at the tip of the suction flow path 30, so that dust can be removed more efficiently.

  As described above, according to this example, it is possible to provide a dust removing device that is excellent in suction force and that can efficiently remove dust.

(Example 2)
In this example, as shown in FIGS. 6 to 12, the effect of dust removal is compared between the product of the present invention and the comparative product.
That is, a dust removing device 1 having two tornado fins 31 having the same shape as shown in FIGS. 6, 7A, and 7B was prepared as the product of the present invention. Each tornado fin 31 is formed such that one plate-like body is bent into a substantially S shape and its outer shape is substantially cylindrical. Then, twisted portions 313 are formed at two portions of the tornado fin 31 having a large curvature.

7 (a) and 7 (b), the twisted portion 313 is outward as it goes from the back side of the paper to the front side (as it goes from the base end side to the front end side in the state of being incorporated in the suction flow path 30). It is formed by twisting to go to.
Further, when viewed from the front end side of the dust removing device 1, the two tornado fins 31 are shifted from each other by 90 ° about the central axis of the suction channel 30 as shown in FIGS. 7 (a) and 7 (b). It is disposed in the suction channel 30.

  Moreover, as shown in FIG. 6, in the product of the present invention, the distal end portion of the suction flow path 30 has a tapered shape whose diameter increases toward the distal end side. Four blow nozzles 20 each having a through-hole with a diameter of 0.8 mm are formed on the same circumference around the central axis of the suction channel 30 at the tip of the suction channel 30. The blow nozzle 20 is disposed at the distal end portion of the suction flow path 30 in a state where the blow nozzle 20 is inclined by 45 ° toward the inner side toward the distal end side. The compressed air discharged from the blow means 2 flows from a tank (not shown) and then passes through a TRINC in-line static eliminator, and the pressure of the compressed air is 0.1 MPa. did. Then, the discharged compressed air is introduced from the air introduction port 24 into the blow air flow path 22 and further flows into each blow nozzle 20 through the blow air flow path 22.

As a comparative product, a suction device similar to the suction device according to the present invention was prepared by directly attaching a suction nozzle.
In addition, both the product of the present invention and the comparative product have, for example, a vacuum cleaner suction airflow of about 1.4 m ³ / min and a flow rate of about 25 m / sec.

The experimental procedure is described below.
First, as shown in FIG. 8, fine powder 61 was sprayed on the panel surface 7 by rubbing styrene foam with a paper file. The fine powder 61 is charged and adhered to the panel surface 7.
Next, the panel surface 7 in this state was imaged in a range of about 20 mm × 30 mm with a digital camera using a 10 × magnifier. The photograph is shown in FIG. In addition, the white part in the same figure is the fine powder 61, and it is the same also in following FIG. 10, FIG.

Next, the spacer 8 is attached to the tip of the comparative product, and the comparative product is reciprocated for 5 seconds in a radius range of about 20 mm while maintaining the distance between the tip of the comparative product and the panel surface 7 to be fine powder. 61 was aspirated.
Thereafter, the panel surface 7 was imaged with a digital camera in the same range as described above. The photograph is shown in FIG.

Next, the spacer 8 is attached to the tip of the suction flow path 30 of the product of the present invention, and the distance between the tip 10 of the product of the present invention and the panel surface 7 is kept at 10 mm, while maintaining a radius of about 20 mm for 5 seconds. At the same position as the comparative product, the product of the present invention was reciprocated to suck the remaining fine powder 61.
Thereafter, the panel surface 7 was imaged with a digital camera in the same range as described above. The photograph is shown in FIG. In addition, the cloudiness part in the upper left part of FIG. 10, FIG. 11 is the stain | pollution | contamination of a lens.

Subsequently, the number of fine powders 61 obtained from FIGS. 9 to 11 was measured, and the residual rate of the fine powder 61 after the test was calculated based on the number of the fine powders 61 before the test. The calculation results are shown in FIG.
As can be seen from the figure, according to the comparative product, the residual rate of the fine powder 61 can be reduced to 68%, but when the product of the present invention is further used, the residual rate of the fine powder 61 can be reduced to approximately 0%. it can. As can be seen from the above, according to the present invention, it is possible to obtain a dust removing device having an excellent suction force.

Sectional explanatory drawing of the dust removal apparatus in Example 1. FIG. FIG. 2 is a sectional view taken along line AA in FIG. 1. 1 is a front view of a dust removing device in Embodiment 1. FIG. Explanatory drawing of the airflow which generate | occur | produces in the front-end | tip part of a dust removal apparatus in Example 1. FIG. FIG. 3 is an explanatory diagram of a spiral suction airflow in the first embodiment. FIG. 6 is an explanatory diagram of a product of the present invention in Example 2. In Example 2, (a) Front view of tornado fin, (b) Front view of another tornado fin. Explanatory drawing which shows the condition of the test which measures the dust removal effect in Example 2. FIG. The photograph in Example 2 which shows the state before a test. The photograph which shows the state after the test by the conventional product in Example 2. FIG. The photograph which shows the state after the test by the product of this invention in Example 2. FIG. FIG. 6 is a diagram showing measurement results in Example 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dust removal apparatus 10 Tip part 2 Blow means 20 Blow nozzle 3 Suction means 30 Suction flow path 31 Tornado fin 41 Suction airflow 5 Dust removal surface 6 Dust

Claims (6)

A dust removing device having a blowing unit that blows compressed gas onto a dust-deposited surface to which dust has adhered, and a suction unit that sucks dust that has risen by blowing the compressed gas,
The suction means has a suction channel that opens on the tip side, and a tornado fin that makes the suction airflow spiral is disposed in the suction channel,
The blow means has a plurality of blow nozzles for discharging the compressed gas at the tip of the dust remover.   2. The dust removing apparatus according to claim 1, further comprising a charge removing device for removing the dust.   3. The dust removing device according to claim 1, wherein the plurality of blow nozzles are disposed in an inclined state with respect to an axial direction of the suction flow path so as to be directed inward toward a distal end side. .   4. The dust removing device according to claim 1, wherein three or more of the plurality of blow nozzles are disposed on the same circumference around a central axis of the suction flow path. 5. .   5. The dust removing device according to claim 4, wherein the plurality of blow nozzles are arranged at equal intervals.   6. The dust removing device according to claim 1, wherein a tip portion of the suction channel has a tapered shape whose diameter increases toward the tip side.