JP2001276766A - Washing apparatus for rotary drum - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly, quickly, and economically clean a rotary drum. SOLUTION: A washing nozzle B to be employed for washing a rotary drum is composed of a hollow cylindrical nozzle body 14, a plurality of nozzles 15-17 for jetting high pressure washing water in jetting patterns of a thin width and rectangular shape toward the inner circumferential face of the rotary drum, and a jetting nozzle 18 which is attached to a connection pipe 19 extended from the base end part of the nozzle body 14 and jets high pressure washing water in a jetting pattern of a thin width and rectangular shape toward the inlet and the discharge outlet of the rotary drum and outer circumferential faces in their peripheries.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a cleaning nozzle used for a rotary drum cleaning apparatus for storing a plurality of types of materials to be stirred and mixed.

[0002]

2. Description of the Related Art In recent years, a rotating drum has been mounted on rotating means such as a friction wheel and rotated, and has been swung by a rocking means like a seesaw, so that a plurality of types of materials (for example, Various mixing apparatuses have been developed to stir and mix powder materials.

In order to wash the rotary drum used in the mixing apparatus having the above-mentioned structure when changing the type of the material to be stirred and mixed, for example, the rotary drum is once dropped from the mixing apparatus to the floor by a crane or the like. In this state, the lid attached to the opening of the rotary drum was manually removed, and washing was performed by spraying washing water into the rotary drum from the opening using a hose or the like.

However, when the rotating drum is washed as described above, every time the washing is performed, the rotating drum is manually lifted or lowered, and washing water is injected into the rotating drum using a hose or the like. Must be
The cleaning work of the rotating drum is not only extremely labor-intensive, but also troublesome and time-consuming.

When the rotary drum is manually cleaned as described above, if the rotary drum is large, the rotary drum can only be cleaned within the reach of an operator. Smoothly move the innermost part or corner away from the opening of the
It is very difficult to clean well and there is a problem that the cleaning of the rotating drum cannot be performed smoothly.

Therefore, in order to solve the above problems,
The present applicant has developed a rotary drum cleaning / drying apparatus described in Japanese Patent Application Laid-Open No. 10-57795. Such washing
According to the drying device, the washing and drying operations of the rotating drum can be automated without relying on humans and can be performed efficiently.

As shown in FIGS. 8 to 10, a cleaning nozzle A used in the rotary drum cleaning / drying apparatus has a front end portion and a front side surface which are inserted into the rotary drum 1 from a charging / discharging port 1a. And a hollow cylindrical first nozzle 2 having a plurality of injection holes a and b formed therein, as shown in FIG.
A U-shaped second nozzle 3 extending from a joint 2a at the base end of the first nozzle 2 to a position facing the inlet / outlet 1a and a truncated cone of the rotary drum 1 from the joint 2a. And an L-shaped third nozzle 4 extending to a position facing the outer peripheral surface of the portion 1b.

When the rotary drum 1 is to be cleaned, first, the rotary drum 1 is turned into its inlet / outlet 1a as shown in FIG.
Invert so that the side faces downward at a predetermined angle. Next, as shown in FIG. 10, by rotating the arm 5 having the first nozzle 2 attached to the tip thereof in the counterclockwise direction from the state shown in FIG. The tip side of the first nozzle 2 is connected to the input / output port 1a.
As shown in FIG. 11, the second and third nozzles 3 and 4 inserted from the side into the rotary drum 1 and extended from the joint 2a at the base end of the first nozzle 2 The outer peripheral surface of the charging / discharging port 1a and the outer peripheral surface of the frustoconical portion 1b of the rotary drum 1 are opposed to each other.

Subsequently, in this state, the rotating drum 1 is rotated by a rotating means of a cleaning device (not shown), and cleaning water supplied from a water supply source (not shown) is supplied to the drum 1 in FIG.
As shown by the arrow, from the injection hole a at the front end of the first nozzle 2 toward the corner from the bottom surface of the rotary drum 1 to the bottom corner of the rotary drum 1, the rotation starts from the injection hole b at the front end side surface of the first nozzle 2. Injection is made toward the inner peripheral surface from the corner on the side of the inlet / outlet 1a of the drum 1 to the truncated cone 1b.
As shown by, by ejecting from the second nozzle 3 toward the outer peripheral surface of the charging / discharging port 1a and from the third nozzle 4 toward the outer peripheral surface of the frustoconical portion 1b of the rotary drum 1, respectively, The inner peripheral surface of the rotary drum 1 and the outer peripheral surface around the charging / discharging port 1a are cleaned.

[0010] At this time, the washing water injected from the injection hole a drilled at the tip of the first nozzle 2 flows from the first nozzle 2 to the bottom surface of the rotary drum 1 as shown in FIG. Because of the long distance, the impact force required to wash away the material adhering to the corners on the bottom side of the rotary drum 1 (the cleaning water injected from the first nozzle 2 As shown in FIG. 9, the ejection pattern P is ejected in a circular shape so as to obtain a force that strikes against the bottom surface of the drum 1 (that is, the ejection pattern P strikes the rotating drum 1 at "points"). ).

[0011]

However, when the rotary drum is washed as described above, the rotary drum is cut from the bottom to the corner on the bottom side and from the corner on the inlet / outlet side. Although the washing water is jetted from the first nozzle over the inner peripheral surface of the conical portion, the washing water cannot be jetted toward the inner peripheral surface of the body of the rotating drum. However, since there is no other method than washing with the washing water flowing down while rotating inside the rotating drum rotated by the rotating means of the washing device, as a result, the residue of the stirring material is firmly attached to the inner peripheral surface of the body ( If so, considerable time was required to wash away the residue.

Further, as described above, it takes a long time to wash out the residue adhering to the inner peripheral surface of the body of the rotary drum. This is because the amount of washing water used for cleaning the rotary drum increases. And it was very uneconomical.

Further, when cleaning the rotary drum with a circular spray pattern of the cleaning water from the tip of the first nozzle, the cleaning water collides with the rotary drum at "points". If a dimensional error has occurred in the axial dimension of the drum, the washing water may come off from the corner on the bottom side, and as a result, the residue adhering to the corner may be washed well. There was a difficult problem.

SUMMARY OF THE INVENTION In view of the above-mentioned various problems, an object of the present invention is to provide a rotary drum cleaning apparatus capable of performing a rotary drum cleaning operation smoothly, quickly, and economically. .

[0015]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a reversing means for reversing a rotary drum so that its charging / discharging port side faces downward at a predetermined angle, and rotating the rotary drum. A rotating means on which the rotating drum is mounted as possible, a falling-off preventing means for preventing the rotating drum from falling off the rotating means when the rotating drum is inverted, and a washing nozzle for spraying washing water toward the rotating drum inverted by the inverting means. In the apparatus for cleaning a rotating drum, the cleaning nozzle includes a hollow cylindrical nozzle main body, and a plurality of cleaning nozzles attached to a distal end side of the nozzle main body and spraying cleaning water toward an inner peripheral surface of the rotary drum. An injection nozzle, and an injection nozzle attached to a connection pipe extending from the base end side of the nozzle body and configured to inject cleaning water toward an input / output port of a rotary drum and an outer peripheral surface around the input / output port. Characterized in that was.

Further, in the apparatus for cleaning a rotary drum according to the first aspect, each of the spray nozzles is configured to spray the wash water in a narrow rectangular shape in a spray pattern. .

Further, in the apparatus for cleaning a rotary drum according to claim 1 or 2, each of the injection nozzles is configured to inject cleaning water at a high pressure toward a respective cleaning area.

Further, in the apparatus for cleaning a rotary drum according to any one of claims 1 to 3, each of the jet nozzles has a narrow jet angle of the wash water from the jet nozzle having a long jet distance of the wash water to the washing area. In addition, the spray angle of the wash water from the spray nozzle whose spray distance to the wash area is short is set to be wide.

Further, in the apparatus for cleaning a rotary drum according to any one of claims 1 to 3, each of the spray nozzles has the narrowest spray angle of the wash water from the spray nozzle having the longest spray distance of the wash water to the washing area. It is characterized in that the jetting angle of the washing water from the jet nozzle is set to gradually widen as the jetting distance of the washing water to the washing area becomes shorter.

According to the present invention, the injection pattern injected from a plurality of injection nozzles attached to the tip end side of the nozzle body is charged and discharged from the bottom of the inner portion of the rotating drum by high-pressure washing water having a narrow rectangular shape. While washing the inner peripheral surface to the outlet satisfactorily, high-pressure washing water that makes the spray pattern sprayed from the spray nozzle attached to the connecting pipe extending from the base end side of the nozzle body into a narrow rectangular shape is used. , The inlet / outlet of the rotary drum and the outer peripheral surface around it are cleaned, so that the cleaning work of the rotary drum can be performed smoothly, promptly and without any special time. It is possible to economically reduce the amount of use.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the present invention,
The same members as those in the prior art are described by the same reference numerals. The difference between the present invention and the prior art is that cleaning water having a narrow rectangular (linear) spray pattern is applied to the inner peripheral surface of the rotary drum and the outer peripheral surface around the inlet / outlet thereof at a high pressure. The point is that it is made to inject.

FIG. 1 shows the overall structure of a cleaning means 10 having a cleaning nozzle B of the present invention. In FIG. 1, reference numeral 11 denotes a mounting plate vertically mounted on a base of a cleaning device (not shown),
A base end of an arm 12 having an elliptical shape having a cleaning nozzle B at a distal end is rotatably mounted on a mounting seat 11a provided on an upper side of the mounting plate 11 via a pivot 11b. 13 is a mounting seat 11 provided below the mounting plate 11.
c, and the distal end side of the arm 1
2. A cylinder connected to the base end of the cylinder 2
3, the cleaning nozzle B provided at the tip of the arm 12 is moved from the standby position shown in FIG. 1 to the cleaning position shown in FIG. 7, or from the cleaning position shown in FIG.
Is rotated to the standby position indicated by.

Next, the structure of the cleaning nozzle B provided at the tip of the arm 12 will be described with reference to FIGS. In FIGS. 2 and 3, reference numeral 14 denotes a hollow cylindrical nozzle main body attached to the tip of the arm 12 by welding or the like. 15 is a first nozzle attached to the tip of the nozzle body 14.
And sprays the washing water toward the inner peripheral surface from the bottom surface of the rotary drum 1 to the corner on the bottom surface side (see FIG. 7). Reference numeral 16 denotes a second injection nozzle mounted on the left side of the tip side of the nozzle body 14 (left side in FIG. 3) in a state inclined slightly forward (rightward in FIG. 2) with respect to the center axis of the nozzle body 14. The washing water is sprayed toward the inner peripheral surface from the corner on the bottom side of the rotating drum 1 to the body of the rotating drum 1 (see FIG. 7).

A third nozzle 17 is mounted on the right side of the tip end of the nozzle body 14 (right side in FIG. 3) in a state where it is further inclined forward (rightward in FIG. 2) than the second injection nozzle 16.
The washing nozzle injects washing water toward the inner peripheral surface from the body of the rotary drum 1 to the charging / discharging port 1a (see FIG. 7). Reference numeral 18 is attached upward to the distal end of an L-shaped connection pipe 19 extending rearward (leftward in FIG. 2) from the left side of the base end side (left side in FIG. 3) of the nozzle body 14. The fourth spray nozzle injects washing water toward the outer peripheral surface from the frusto-conical portion 1b of the rotary drum 1 to the charging / discharging port 1a (see FIG. 7).

In the present invention, the jetting angle θ1 of the washing water from the first jetting nozzle 15 (see FIG. 4) is set to, for example, 15 °, and the jetting angle θ2 of the washing water from the second jetting nozzle 16 (θ2). 5) is, for example, 30 °, the third and fourth
Angle θ3 of washing water from the spray nozzles 17 and 18
(See FIG. 6) is set to, for example, 65 °. The injection angles θ1 and θ2 of the washing water from the first and second injection nozzles 15 and 16 are determined by the third and fourth injection nozzles 1.
The reason why the injection angle θ3 of the washing water from the nozzles 7 and 18 is narrower is that the nozzles are located away from the first and second injection nozzles 15 and 16 (that is, the bottom surface of the rotary drum 1 and the corners on the bottom surface side). In order to obtain the impact force (the force with which the washing water jetted from the washing nozzle B collides with the rotary drum 1) of a strength necessary for satisfactorily washing off the residue of the material (for example, powder material or the like) adhering to the surface. is there. The reason why the spray angle θ3 of the washing water from the third and fourth spray nozzles 17 and 18 may be large is that the distance from the third and fourth spray nozzles 17 and 18 to the respective washing areas is large. This is because a close and sufficient strength can be obtained.

The first to fourth injection nozzles 15 to 18
The cleaning water sprayed from the first to fourth spray nozzles 15 to 18 has a spray pattern P formed into a narrow rectangular shape (linear shape) as shown in FIGS. (That is, the washing water is caused to collide with the rotating drum 1 by a “line”) and is configured to be able to be jetted at a high pressure.

Next, the operation of cleaning the rotating drum 1 by the cleaning means 10 of the present invention will be described. First, as shown in FIG. 7, the rotating drum 1 is inverted by a reversing means of a cleaning device (not shown) so that the charging / discharging port 1a thereof faces downward at a predetermined angle. Subsequently, the cylinder 13
Is activated to rotate the arm 12 in the counterclockwise direction in FIG. 1 so that the distal end side of the nozzle body 14 attached to the distal end of the arm 12 is moved from the inlet / outlet port 1a as shown in FIG. A fourth injection nozzle 18 inserted into the rotary drum 1 and attached upward to a connection pipe 19 extending from the base end side surface of the nozzle body 14 to the inlet / outlet 1a.
It is arranged at a position close to the outer circumference.

Then, as described above, the cleaning nozzle B is moved to the position shown in FIG.
When the rotary drum 1 is rotated to the cleaning position shown in FIG. 5, the cleaning water is supplied from the water supply source (not shown) to the nozzle body 14 through the water supply pipe 20, and a rotating means such as a friction wheel provided in a cleaning device (not shown) is provided. The rotating drum 1 is rotated and oscillated, and the rotating drum 1 is alternately rotated, for example, clockwise and counterclockwise at predetermined time intervals by a mixing means or the like for stirring and mixing a plurality of types of materials. Wash the drum 1.

As shown in FIG. 7, the washing water supplied to the nozzle body 14 is supplied from a first spray nozzle 15 provided at the tip thereof to a corner from the bottom of the innermost part of the rotary drum 1 to the bottom. Toward the inner peripheral surface, the second injection nozzle 16 provided on the left side on the front end side, and the second inner peripheral surface from the corner on the bottom side to the inner peripheral surface from the corner portion on the front side, the second side provided on the right side on the front side. 3 toward the inner peripheral surface from the inner peripheral surface of the body of the rotary drum 1 to the inlet / outlet 1a.
9 from the fourth spray nozzle 18 attached to the outer peripheral surface of the frustoconical portion 1b of the rotary drum 1 and the inlet / outlet 1a, each of the spray patterns P has a narrow rectangular shape (FIGS. 4 to 6).
(See Reference).

As a result, the first to third spray nozzles 15 to
The cleaning water sprayed at a high pressure by forming the spray pattern P into a narrow rectangular shape from 17 is rotated by the rotation of the rotary drum 1 and the inner circumferential surface from the bottom surface of the rotary drum 1 to the inlet / outlet 1a and the rotation. The residue that is evenly sprayed onto the material-raising plate 1c (see FIG. 7) formed on the inner peripheral surface of the drum 1 and adheres to the inner peripheral surface of the rotary drum 1 and the raking plate 1c is removed for a short time. Can be washed off smoothly and quickly. In addition, the injection pattern P
Is formed into a narrow rectangular shape, and the washing water jetted at a high pressure is evenly jetted by the rotation of the rotary drum 1 onto the outer peripheral surface of the frusto-conical portion 1b of the rotary drum 1 and the inlet / outlet 1a. Materials and residues adhering to the truncated cone portion 1b and the charging / discharging port 1a can be satisfactorily washed off in a short time.

Further, first to fourth injection nozzles 15 to 18
Since the cleaning water is sprayed from the spray pattern P in a narrow rectangular shape, the cleaning water collides with the rotary drum 1 with a “line”, and as a result, the cleaning area is widely covered. The rotating drum 1
Even if there is a dimensional error in the dimension in the axial direction, etc., the washing water is properly jetted to each washing area, and the rotary drum 1 can be washed well.

The first to fourth injection nozzles 15 to 18
Since the washing water is sprayed at a high pressure, the rotating drum 1 can be washed in a short time while the impact force for washing off the residue is increased, and as a result, the amount of the washing water used is increased. Can be reduced favorably, and the rotating drum 1 can be economically cleaned.

Moreover, the first and second spray nozzles 15 and 16 for spraying the washing water to a position away from the nozzle body 14.
Is configured to narrow the jet angles θ1 and θ2 of the wash water jetted from the first and second jet nozzles 15 and 16, so that the wash water is set at a position away from the nozzle body 14 as described above. Even in the case of spraying, it is possible to obtain a sufficiently strong hitting force, and it is possible to satisfactorily wash off the residue adhering to the corner on the bottom side of the rotating drum 1.

When the preset cleaning time has elapsed, the supply of the cleaning water from the water supply source (not shown) to the cleaning nozzle B is stopped, and the rotation of the rotating drum 1 by the rotating means is stopped. Subsequently, the cylinder 13 is activated to rotate the cleaning nozzle B clockwise from the cleaning position shown in FIG. 7 to the standby position shown in FIG. 1 (that is, the tip side of the nozzle body 14 is pulled out of the rotary drum 1 and Then, the fourth spray nozzle 18 is separated from the charging / discharging port 1a of the rotary drum 1), thereby completing the cleaning operation of the rotary drum 1.

In the present invention, the cleaning means 10 has been described as being installed on the base of a cleaning apparatus (not shown). However, the cleaning means 10 is installed on the base of a mixing apparatus to discharge the agitated and mixed materials. After that, the rotating drum 1 may be washed while mounted on the mixing device.

In the above description, the nozzle body 14 of the cleaning nozzle B is provided with three injection nozzles 15 to 17 for injecting cleaning water into the rotary drum 1, but the present invention is not limited to this. Needless to say, the number of injection nozzles may be increased or decreased as needed. Further, the spray angle of the cleaning water sprayed from the spray nozzles 15 to 18 is not limited to the numerical value described in the embodiment, and may be appropriately changed as needed without departing from the spirit of the present invention. Is also good.

Further, according to the present invention, a plurality of types of materials are stirred and
It not only cleans the rotating drum used for mixing, but also
Needless to say, the present invention can also be applied to cleaning of various containers used for transporting a kind of material to a predetermined place.

[0038]

According to the present invention, as described above, the first to third injection nozzles inject cleaning water toward the inner peripheral surface from the bottom surface of the rotating drum to the charging / discharging port,
The fourth spray nozzle injects washing water toward the outer peripheral surface around the inlet / outlet to wash the rotary drum, so that the washing of the rotary drum is performed by a conventional cleaning device. As compared with the method, the cleaning can be performed smoothly, quickly, and economically with a reduced amount of washing water, without requiring any special time.

Further, by making the spray pattern of the washing water sprayed from the first to fourth spray nozzles into a narrow rectangular shape, it is possible to cover a wide washing area, and as a result, it is possible to cover the rotating drum. Even when there is a dimensional error in the dimension in the axial direction or the like, it is possible to satisfactorily wash the rotary drum by properly jetting the washing water to each washing region.

Further, by spraying the washing water at high pressure from the first to fourth spray nozzles, it is possible to increase the hitting force for washing off the residue and to wash the rotary drum in a short time. Therefore, combined with the fact that the cleaning water is sprayed on the inner peripheral surface from the bottom surface of the rotary drum to the charging / discharging port, the use amount of the cleaning water is reduced favorably, and the cleaning of the rotary drum is economical. Can be done

Also, of the first to fourth spray nozzles, the first and second spray nozzles for spraying the wash water toward the bottom surface of the rotating drum (that is, the wash water spray distance to the washing area is long). The cleaning water spray angle from the nozzle is narrowed, so that even when the cleaning water is sprayed at a position distant from the first and second spray nozzles, the residue is sufficiently washed off with a sufficiently strong hitting force. be able to.

[Brief description of the drawings]

FIG. 1 is a side view showing an overall configuration of a cleaning unit having a cleaning nozzle of the present invention.

FIG. 2 is a side view of a cleaning nozzle.

FIG. 3 is a vertical sectional front view of a cleaning nozzle.

FIG. 4 is an explanatory diagram for explaining a jet angle and a jet pattern of washing water jetted from a first jet nozzle.

FIG. 5 is an explanatory diagram for explaining a jet angle and a jet pattern of cleaning water jetted from a second jet nozzle.

FIG. 6 is an explanatory diagram for explaining a jet angle and a jet pattern of cleaning water jetted from third and fourth jet nozzles.

FIG. 7 is a vertical sectional side view showing a cleaning state of the rotary drum.

FIG. 8 is a side view showing a conventional cleaning nozzle.

FIG. 9 is an explanatory diagram for describing a jet pattern of cleaning water jetted from a conventional cleaning nozzle.

FIG. 10 is a longitudinal sectional view showing a cleaning state of the rotating drum.

FIG. 11 is a front view showing the cleaning state of the rotary drum.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cleaning means 14 Nozzle main body 15-18 1st-4th injection nozzle 19 Connection pipe B Cleaning nozzle

Claims (5)

[Claims] 1. A reversing means for reversing a rotating drum so that its charging / discharging port side faces downward at a predetermined angle, a rotating means for rotatably mounting the rotating drum, and In a washing device for a rotating drum, comprising: a falling-off preventing means for preventing falling off from the rotating means, and a washing nozzle for injecting washing water toward the rotating drum inverted by the inverting means, the washing nozzle includes: A hollow cylindrical nozzle body, a plurality of spray nozzles attached to the tip side of the nozzle body and spraying washing water toward the inner peripheral surface of the rotary drum, and a connection extending from the base end side of the nozzle body An apparatus for cleaning a rotating drum, comprising: a jet nozzle attached to a pipe for jetting cleaning water toward an inlet / outlet of the rotary drum and an outer peripheral surface around the inlet / outlet. 2. The rotary drum cleaning apparatus according to claim 1, wherein each of the spray nozzles is configured to spray the wash water in a spray pattern having a narrow rectangular shape. 3. The rotary drum cleaning apparatus according to claim 1, wherein each of the injection nozzles is configured to inject cleaning water at a high pressure toward each of the cleaning regions. 4. The spray nozzle according to claim 1, wherein a spray angle of the wash water from the spray nozzle having a long spray distance to the washing area is set to be narrow, and a spray angle of the wash water from the spray nozzle to the wash area is short. 4. The cleaning device for a rotary drum according to claim 1, wherein a spray angle of the cleaning water is set wide. 5. The spray nozzle sets the injection angle of the cleaning water from the injection nozzle having the longest injection distance of the cleaning water to the cleaning area to be the narrowest, and the injection distance of the cleaning water to the cleaning area is short. 4. The cleaning apparatus for a rotary drum according to claim 1, wherein the spraying angle of the washing water from the spraying nozzle is set to be gradually wider according to the following.