JPH0761465B2 - Tornado Flow Cleaning Device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tornado flow cleaning device for cleaning the inside of a recess of an object to be cleaned having a recess such as a hole, a groove, or a recess with an air flow that flows in a tornado shape.

[0002]

2. Description of the Related Art Conventionally, foreign matter adhering to the inner surface of a recess of an article to be cleaned is blown off by, for example, air blown from a blowing nozzle, and the scattered foreign matter is sucked from around the article to be cleaned. Had been washed with wind.

[0003]

In the above cleaning method, since the air flow is blown against the object to be cleaned from a certain direction,
There is a problem that the cleaning effect varies depending on the position of foreign matter,
In order to absorb the blown foreign matter, a suction force equal to or higher than the scattering force of the foreign matter is required, so that there is a problem that a large suction device is required. An object of the present invention is to solve the above problems and effectively clean the inside of the recess of the object to be cleaned, and to collect the foreign matter separated from the material to be cleaned while suppressing the scattering thereof.

[0004]

A tornado flow cleaning apparatus according to the present invention comprises a tornado generating cylinder, which is vertically installed above a conveyor for horizontally transporting an object to be cleaned, and is tangential to the cross section of the tornado generating cylinder. A cylindrical outer cylinder part that swirls the high-speed air flow that has flowed in from below along the inner peripheral surface, and a high-speed air flow from the tangential direction of its cross section to the upper end inside this outer cylinder part. An upper blower tube having an inflow portion is formed, and a lower end of the outer cylinder portion is formed in a conical cylinder shape in which the cylinder diameter is gradually decreased downward, and an outlet is opened at the lower end, and the upper blower tube is introduced from the inside. A spiral blower is swirled downward along the inner peripheral surface in a tornado-like manner to generate a tornado-like stream, and a lower blower tube that concentrically connects the washing tornado-like stream to the downward direction from the outlet. The upper part of the tornado flow generating cylinder has a cylinder diameter larger than the diameter of the outlet. A suction cylinder, which is formed in a cylindrical shape, concentrically inserts an air flow that reverses upwards below the outlet and flows upward through the center of the tornado flow and sends it out into the return duct. Have a configuration.

[0005]

The upper blower cylinder having the cylindrical outer cylinder portion and the inflow portion, and the lower blower cylinder, which is conical and is concentrically connected to the lower end of the outer cylinder portion, are formed in the upper and lower parts. A suction cylinder having a diameter larger than the diameter of the outlet at the lower end of the cylinder is concentrically inserted in the upper part of the inside of the tornado-generating cylinder to the upper end in the outer cylinder part from the tangential direction of its cross section. A high-speed air flow flows in through the portion, and the high-speed air flow spirally flows downward in the outer tube portion along the inner peripheral surface thereof and then in the lower blower tube along the inner peripheral surface thereof. The tornado flow swirling and flowing downward in the form of a tornado flows out downward from the outlet, and the object to be cleaned on the conveyor is washed by the washing tornado flow. The air flow that reversely flows upward below the outflow port together with the foreign matter separated from the object to be cleaned flows upward through the central portion of the tornado flow and flows into the suction cylinder, and from the suction cylinder to the return duct. Is sent in.

[0006]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, the foreign matter is accurately separated from the object to be cleaned by the tornado flow for cleaning flowing out from the inside of the lower blower cylinder to the object W to be cleaned. The cleaning can be performed uniformly and effectively, and the fluctuation of the cleaning effect due to the foreign matter adhesion position can be eliminated. In addition, foreign matter separated from the object to be cleaned can be sucked into the tornado flow, moved upward with the air flow, and sent out into the return duct, so scattering of the foreign matter can be suppressed and the foreign matter can be effectively collected. Therefore, the mechanism for collecting foreign matter can be simplified and the equipment cost can be reduced.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. In a tornado flow cleaning device for cleaning the inside of the recess W1 of an object to be cleaned W having a recess W1 such as a hole, a groove, or a recess by a tornado-like air flow, the cover frame 1 is installed upright in parallel. In addition, a pair of side wall portions 1a, 1a and an upper wall portion 1b horizontally installed on both side wall portions 1a and having a hole portion 1c penetrating in the central portion are formed, and inside the cover frame 1. Is a conveyor belt 2a that is circulated by being driven by a motor 3.
Conveyor 2 which has an object to be cleaned W and horizontally transfers it.
Are installed horizontally.

A plurality of pairs of holders 4 for holding each of the objects to be cleaned W and advancing them together with the conveyor belt 2a are joined to the belt conveyor 2a of the conveyor 2 at regular intervals.

A transfer passage 5 through which the article to be cleaned W passes is formed on the conveyor 2 in the cover frame 1, and an inlet portion 5a and an outlet portion 5b are opened at both ends of the cover frame 1.

A blower 6 having a fan rotatably driven by a motor 6a is installed near one end of the cover frame 1, and a blower duct 6 of the blower 6 has a feed duct 7 having a horizontal blower 7a. Is connected to the suction port 6c of the blower 6, and the first return duct 8A and the second return duct
The second return duct includes a filter 9 installed between the second return duct 8B and the foreign matter such as dust and dirt separated from the object W to be cleaned.
Connected via 8B.

Above the center of the conveyor 2, a tornado flow generating cylinder 11 is formed in a downwardly open tubular shape and is installed upright above the conveyor 2, and a tornado flow is generated in a cylindrical shape. A cleaning mechanism 10 having a suction cylinder 12 inserted into the upper part of the cylinder 11 and connected to the filter 9 via the first return duct 8A is installed.

The upper part of the tornado flow generating cylinder 11 has a cylindrical shape having an inner diameter larger than the diameter of the suction cylinder 12, and a high speed air flow 15 flowing from the tangential direction of the cross section to the inner upper end is formed on the circumferential surface. The outer cylinder portion 13a that spirally swirls downward along with the outer cylinder portion 13a is connected to the upper end of the outer cylinder portion 13a and extends horizontally along the tangential direction of the cross section of the outer cylinder portion 13a. Inflow part 13b into which high-speed air flow 15 is introduced from the tangential direction of the cross section of part 13a
An upper blower tube 13 having the above is formed, and the inflow portion 13b of the upper blower tube 13 is directly connected to the blower portion 7a of the feeding duct 7.

The high-speed air stream 15 flowing in through the inflow portion 13b from the tangential direction to the upper end in the outer tube portion 13a of the upper blower tube 13 runs around the center of the outer tube portion 13a along the inner peripheral surface of the outer tube portion 13a. A spiral flow 16 that spirals downward while spirally flowing is generated in the outer cylindrical portion 13a.

In the lower part of the tornado flow generating tube 11, the maximum tube diameter is the same as the tube diameter of the outer tube portion 13a of the upper blower tube 13, and the tube diameter is gradually reduced downward and the shape of a conical tube opening upward and downward. Has an outer cylindrical portion 13a
While being concentrically connected to the lower end of the fan, the lower end is inserted into the hole 1c of the cover frame 1, and the screw flow 16 flowing from the inside of the upper blower tube 13 is swirled in the circumferential direction along the inner peripheral surface. A tornado flow that gradually descends and swirls downwards
A lower blower tube 14 that causes 17 is formed.

At the lower end of the lower blower tube 14 has a diameter smaller than that of the suction tube 12, and the upper wall portion 1b of the cover frame 1 is
An outlet 14a which is substantially aligned with the lower surface of the conveyor is opened so as to face the conveyor 2. The screw flow 16 flowing from the lower end in the outer tube portion 13a of the upper blower tube 13 to the upper end in the lower blower tube 14 is the lower blower tube.
Swirling the inside of 14 around the center of the lower blower cylinder 14 along its inner peripheral surface to gradually reduce the swirling diameter and gradually descend while gradually increasing the flow velocity and swirling downward in a tornado shape. A tornado flow 17 that flows and swirls into and below the lower blower tube 14 in a tornado-like manner occurs, and a tornado flow 17a for cleaning flows out of the outlet port 14
The air flows from a to below the lower air blower 14.

The cleaning tornado flow 17a flowing out from the outlet 14a of the lower blower tube 14 to the lower side thereof is theoretically continuous to the position of the apex 21 of the virtual conical surface 20 extending the inner peripheral surface of the lower blower tube 14. However, experimentally, the cleaning tornado flow 17a can be continuously generated up to about 2/3 of the length of the center line of the virtual conical surface 20.

The tornado flow 17a for cleaning that has flown out of the outlet 14a of the lower blower tube 14 has a recess W1 of the object W to be cleaned when each of the objects W to be cleaned on the conveyor 2 is transferred directly below the lower blower tube 14. Is swirled and flown in the recess W1, and foreign matter adhering to the inner surface of the recess W1 is blown off by the cleaning tornado flow 17a to clean the inside of the recess W1.

The tornado flow 17a for cleaning, which has flown out of the outlet 14a of the lower blower tube 14 and has collided with the object W to be cleaned, has a high atmospheric pressure of the tornado flow 17 itself and a negative pressure inside the tornado flow 17. Therefore, at the collision position below the upper blower tube 14, the flow reverses upward and flows into the cleaning tornado flow 17a together with the foreign matter separated from the object W to be cleaned.

Air flow 18 flowing into washing tornado flow 17a
And foreign matter, the diameter of the outlet 14a of the lower blower cylinder 14 is smaller than the diameter of the suction cylinder 12, and the air pressure in the upper part of the tornado flow 17 is lower than that in the lower part. Suction cylinder flows straight up through the center of flow 17
It flows into 12.

The air flow 18 and foreign matter passing through the suction cylinder 12 are sent into the filter 9 through the first return duct 8A, and the foreign matter is collected by the filter of the filter 9,
The air flow cleaned by the filter 9 flows into the suction port 6b of the blower 6 through the second return duct 8B, is returned to the blower 6 again, and circulates in the tornado flow cleaning device.

Next, the operation and effect of the embodiment having the above configuration will be described. In this example, a tornado generating cylinder installed upright above the conveyor 2 that horizontally transfers the object to be cleaned W.
At the upper part of 11 is a cylindrical outer cylinder part 13a for swirling the high-speed air flow 15 flowing in from the tangential direction of its cross-section along the inner peripheral surface downward, and in this outer cylinder part 13a. An inflow part into which the high-speed air stream 15 flows from the tangential direction of its cross section to the upper end
13b and an upper blower tube 13 having a conical tube shape with a cylinder diameter gradually decreasing downward at the lower end of the outer tube portion 13a, and an outlet 14a is opened at the lower end to allow the air to flow from inside the upper blower tube 13. The spirally wound flow 16 is swirled downward along the inner peripheral surface in a tornado-like manner to generate a tornado flow 17, and a tornado flow 17a for cleaning is provided at the outlet port 14
The lower blower cylinder 14 that flows downward from a is connected concentrically, and the upper part of the tornado flow generating cylinder 11 is formed into a cylindrical shape having a diameter larger than the diameter of the outlet 14a. 14
A suction cylinder 12 is concentrically inserted below a in order to invert and flow upward and flow upward through the center of the tornado flow 17 and send it out into the first return duct 8A.

Therefore, the concave portion W1 of the object to be cleaned W is caused by the cleaning tornado flow 17a flowing out from the inside of the lower blower tube 14 to the lower side thereof.
Foreign matter is accurately separated from the inner surface of the recess W1 of the object W to be cleaned.
It is possible to uniformly and effectively clean the inner surface of the whole surface, and it is possible to eliminate the fluctuation of the cleaning effect due to the position where foreign matter is attached.

Further, the foreign matter separated from the object to be cleaned W is sucked into the tornado flow 17 and is caused to flow upward together with the air flow,
Since it can be sent into the first return duct 8A,
It is possible to suppress the scattering of the foreign matter and effectively collect the foreign matter, simplify the mechanism for collecting the foreign matter, and reduce the equipment cost.

[Brief description of drawings]

FIG. 1 is a side view of a tornado flow cleaning device showing an embodiment of the present invention.

FIG. 2 is likewise a plan view.

FIG. 3 is a vertical sectional view of a main part.

FIG. 4 is an enlarged cross-sectional view taken along line XX of FIG.

[Explanation of symbols]

 2 Conveyors 8A, 8B Return duct 10 Cleaning mechanism 11 Tornado flow generator tube 12 Suction tube 13 Upper air blower tube 13a Outer tube section 13b Inlet section 14 Lower air blower tube 14a Outlet port 15 High speed air flow 16 Spiral flow 17 Tornado flow 17a Cleaning Tornado flow W to be cleaned W1 recess

Claims (1)

[Claims] 1. A high-speed air stream flowing in from a tangential direction of a transverse section of the tornado-generating cylinder, which is vertically installed above a conveyor for horizontally transferring the object to be cleaned, is downwardly moved along the inner peripheral surface. Forming an upper blower cylinder having a cylindrical outer cylinder portion for spirally swirling and flowing, and an inflow portion for allowing a high-speed air flow to flow into the upper end of the outer cylinder portion from a tangential direction of its cross section, The lower end of the tubular portion is formed into a conical tubular shape in which the tubular diameter is gradually reduced downward, and an outlet is opened at the lower end. The screw flow introduced from the inside of the upper blower tube is wound downward along the inner peripheral surface. To form a tornado flow by swirling in a circular shape, and concentrically connect a lower blower cylinder that causes the washing tornado flow to flow out from the outlet port to the lower side thereof, and to the upper part in the tornado flow generating cylinder, It is formed in a cylindrical shape having a diameter larger than the diameter of the outlet, and goes upward below the outlet. A tornado flow cleaning device, characterized in that a suction cylinder is inserted concentrically into which a flow of air that reverses and rises through the center of the tornado flow is introduced and sent out into a return duct.