JP2011255315A - Washing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing apparatus which can wash a rotating drum container.SOLUTION: Two rollers are provided horizontally. The rollers support the drum container 18 in a lying state. A moving means not shown moves these rollers. By this movement, nozzles 31b-33b turn to a status inserted into the drum container 18. A motor rotates the rollers in one direction. By the rotation of the rollers, the drum container 18 rotates in one direction. The nozzles 31b-33b spray a cleaning liquid to a part which moves by an angle of θ1 from a vertical opposing direction to a rotating direction. The angle of θ1 is ≥10° and ≤90°.

Description

  The present invention relates to a cleaning apparatus for cleaning a drum-shaped container.

  A drum-like container (hereinafter referred to as a drum container) is used as a container for storing a liquid substance such as emulsion or paint. After the liquid material is removed from the drum container, the empty drum container is washed for reuse.

  A conventionally known method for cleaning a drum container is to rotate a lying drum container and insert a nozzle into the rotating drum container, as described in Patent Document 1, for example. The nozzle sprays the cleaning agent toward the inner surface of the drum container at a predetermined spray pressure. In this manner, the deposits and the like can be removed from the drum container by spraying the cleaning agent.

JP-A-10-156300

  However, in the cleaning method as in Patent Document 1, in the region where the cleaning liquid is sprayed on the inner surface of the drum container, the sprayed cleaning liquid may stay without flowing downward, resulting in a film of the cleaning agent. The presence of such a film of cleaning liquid makes it difficult to apply the sprayed cleaning agent directly to the inner surface of the drum container. Therefore, in the cleaning method as in Patent Document 1, it may be difficult to remove the deposits.

  Furthermore, when performing the cleaning method as in Patent Document 1, it is necessary to increase the spraying pressure of the cleaning agent when removing a residue having a large adhesion to the drum container. However, the drum container cannot rotate stably due to an increase in the spray pressure of the cleaning agent. As a result, the drum container could not be cleaned.

  This invention solves the said subject and provides the washing | cleaning apparatus which can wash | clean the rotating drum container.

  The cleaning device according to the present invention holds a drum container whose one end side is lying open and rotates the drum container in one direction around the axis of the drum container or an axis parallel to the axis. An inner peripheral surface cleaning unit that is relatively inserted through the opening end into the drum container and injects the cleaning liquid onto the inner peripheral surface of the drum container, and an inner part that injects the cleaning liquid onto the inner bottom surface of the drum container. A bottom surface cleaning unit, and the inner peripheral surface cleaning unit injects the cleaning liquid into a portion that has moved by an angle θ1 from the opposite direction to the rotation direction on a surface orthogonal to the rotation axis, and the angle θ1 is It is characterized by being 10 ° or more and 90 ° or less.

  It is preferable that the injection unit for injecting the liquid to the drum container is arranged at a position where the force received by the drum container by the liquid cancels all or a part of the force received by the drum container by the cleaning liquid. Moreover, it is preferable that the said injection unit is provided in the exterior of the said drum container, and is provided with the outer peripheral surface washing | cleaning unit which injects the said liquid to the outer peripheral surface of the said drum. Furthermore, it is preferable that the outer peripheral surface cleaning unit is disposed at a position facing the inner peripheral surface cleaning unit.

  The inner peripheral surface cleaning unit is provided with a plurality of inner peripheral surface injection nozzles that inject the cleaning liquid and are arranged from the other end side to the one end side, and the injection is performed from the inner bottom surface cleaning unit to the inner peripheral surface cleaning unit. Preferably, the cleaning liquid is sprayed from the inner peripheral surface spray nozzle disposed on the other end side to the inner peripheral surface spray nozzle disposed on the one end side. . Preferably, the inner peripheral surface cleaning unit and the inner bottom surface cleaning unit are each provided with a solenoid valve, and the injection is switched by operating the solenoid valve. Furthermore, it is preferable to have a moving part that moves the inner peripheral surface cleaning unit and the inner bottom surface cleaning unit between the inside and the outside of the drum container.

  Since the cleaning apparatus of the present invention has the inner surface cleaning unit that ejects the cleaning liquid toward a predetermined portion of the inner surface of the drum container, the sprayed cleaning liquid can be directly applied to the inner surface of the drum container. Therefore, according to the present invention, the drum container can be reliably cleaned.

  In addition, the cleaning device of the present invention includes an inner surface cleaning unit that injects the inner surface cleaning liquid onto the inner surface of the drum container, and an injection unit that injects the liquid into the drum container. The injection unit is arranged at a position where the force received by the drum container by the injected liquid cancels all or part of the force received by the drum container by the cleaning liquid. For this reason, even if the spraying pressure of the cleaning liquid is increased, the drum container can be stably rotated. Therefore, according to the present invention, it is easy to remove a residue having a large adhesion force with the drum container.

It is explanatory drawing which shows the outline | summary of the washing | cleaning apparatus of a retracted state in which the rotation unit was provided movably. It is a side view which shows the outline | summary of a rotation unit. (A) is explanatory drawing which shows the outline when a drum container exists in a horizontal position, (B) is explanatory drawing which shows the outline when a drum container exists in an oblique position. It is explanatory drawing which shows the outline | summary of the washing | cleaning apparatus when it exists in an insertion state. It is sectional drawing which shows the outline | summary of the inside of a drum container when a washing | cleaning apparatus is an insertion state. It is explanatory drawing which shows the outline | summary of the washing | cleaning of a drum container by an inner bottom face injection unit. It is explanatory drawing which shows the outline | summary of the washing | cleaning of a drum container by an internal peripheral surface injection unit. (A) is due to the first inner peripheral surface injection unit, (B) is due to the second inner peripheral surface injection unit, and (C) is due to the third inner peripheral surface injection unit. It is explanatory drawing which shows the outline | summary of the washing | cleaning apparatus of the retracted state in which the washing | cleaning unit was provided movably. It is explanatory drawing which shows the outline | summary of the washing | cleaning unit provided with an inner bottom surface injection unit, an inner peripheral surface injection unit, and an outer peripheral surface injection unit. It is sectional drawing which shows the outline | summary of the washing | cleaning unit provided with an inner bottom surface injection unit, an inner peripheral surface injection unit, and an outer peripheral surface injection unit. It is sectional drawing which shows the outline | summary of the washing | cleaning unit provided with multiple pairs of injection unit pairs which consist of an inner peripheral surface injection unit and an outer peripheral surface injection unit. It is sectional drawing which shows the outline | summary of the washing | cleaning unit provided with an inner peripheral surface injection unit and an outer peripheral surface injection unit. It is sectional drawing which shows the outline | summary of the washing | cleaning unit provided with an inner peripheral surface injection unit and an outer peripheral surface injection unit. It is sectional drawing which shows the outline | summary of the washing | cleaning unit provided with a some internal peripheral surface injection unit. FIG. 3 is a cross-sectional view showing an outline of inserting an inner bottom surface injection unit into the drum container 18 and cleaning the inner bottom surface. It is sectional drawing which shows the outline | summary which inserts an inner peripheral surface injection unit in the drum container 18, and cleans an inner peripheral surface and an outer peripheral surface. It is sectional drawing which shows the outline | summary of the washing | cleaning unit provided with an inner bottom surface injection unit, an inner peripheral surface injection unit, and an outer peripheral surface injection unit. It is sectional drawing which shows the outline | summary of the washing | cleaning unit provided with an inner bottom surface injection unit, an inner peripheral surface injection unit, and an outer peripheral surface injection unit. It is sectional drawing which shows the outline | summary of the washing | cleaning unit provided with an inner bottom surface injection unit, an inner peripheral surface injection unit, an outer peripheral surface injection unit, and an outer bottom surface injection unit.

  As shown in FIG. 1, the drum container cleaning device 10 includes a rotating unit 12 and a cleaning unit 14. As shown in FIGS. 1 and 2, the rotating unit 12 rotates in one direction while supporting the drum container 18, and includes rotating rollers 21 and 22 that support the drum container 18, and a motor 24. Have. The rotating rollers 21 and 22 are provided horizontally and are rotatable about an axis. A motor 24 is connected to each of the rotating rollers 21 and 22. And by the drive of the motor 24, the rotation rollers 21 and 22 rotate in the same direction. The drum container 18 having an open end 18o on one end side and a closed end 18c on the other end side is disposed on the rotating rollers 21 and 22 in a lying state. As a result, the drum container 18 disposed on the rotation rollers 21 and 22 rotates around the axis AX of the drum container 18. A stopper 26 that supports the closed end 18c side of the drum container 18 may be provided.

  As shown in FIG. 3, a cylinder 28 is provided below the drum container 18 disposed on the rotating rollers 21 and 22. The cylinder 28 is movably provided between a position where the drum container 18 is pushed up (push-up position) and a position where the cylinder 28 is retracted from the pushed-up position. The controller 29 causes the cylinder 28 to have a horizontal position (see FIG. 3A) where the drum container 18 is disposed horizontally and an oblique position where the open end 18o is lower than the closed end 18c (FIG. 3B). The drum container 18 is moved between Instead of driving the cylinder 28, the drum container 18 may be moved between the horizontal position and the oblique position by driving the rotating rollers 21 and 22. Further, a support member (not shown) for supporting the open end 18o of the drum container 18 at an oblique position may be provided.

  Returning to FIG. 1, the cleaning unit 14 sprays a predetermined cleaning liquid onto the drum container 18 to clean the drum container 18, and includes first to third inner peripheral surface injection units 31 to 33, an inner bottom surface, and the like. An injection unit 34 and a pump 36 that sends cleaning liquid to each of the injection units 31 to 34 are provided.

  The 1st inner peripheral surface injection unit 31 is provided with piping 31a and nozzle 31b provided in piping 31a. The nozzle 31b is arranged in the front-end | tip part of the piping 31a. Similarly, the second inner peripheral surface injection unit 32 includes a pipe 32a and a nozzle 32b provided in the pipe 32a, and the third inner peripheral surface injection unit 33 is provided in the pipe 33a and the pipe 33a. And a nozzle 33b. The inner bottom surface injection unit 34 includes a pipe 34a and a nozzle 34b provided at the tip of the pipe 34a.

  A branch pipe 38 is provided between each of the injection units 31 to 34 and the pump 36. Moreover, the flexible hose 39 connects each injection unit 31-34 and the branch pipe 38, respectively. Each flexible hose 39 is provided with electromagnetic valves 41 to 44, respectively. The flexible hose 48 connects the branch pipes 38 to each other, and the flexible hose 49 connects the branch pipe 38 and the pump 36.

  The solenoid valve 41 turns on and off the injection of the nozzle 31b, and the solenoid valves 42 and 43 turn on and off the injection of the nozzles 32b and 33b, respectively. The electromagnetic valve 44 performs on / off of the injection of the nozzle 34b.

  A three-way valve 52 is provided between the pump 36 and the cleaning liquid storage section 50 that stores the cleaning liquid and the rinse storage section 51 that stores the rinse. The three-way valve 52, the cleaning liquid reservoir 50, the three-way valve 52, the rinse reservoir 51, and the three-way valve 52 and the pump 36 are connected by a pipe 54, respectively. The rinse storage unit 51 may be omitted.

  The rotary unit 12 is movable inside and outside the drum container 18. Then, the shift unit 56 moves the rotary unit 12 to a predetermined position. By this movement of the rotating unit 12, the cleaning device 10 has an inserted state (see FIG. 4) in which the nozzles 31b to 34b are relatively inserted into the drum container 18 and a retracted state in which the nozzle 31b is retracted from the insertion position (see FIG. 1). ).

  As shown in FIG. 4, when the cleaning apparatus 10 is in the inserted state, the nozzle 31b is located on the closed end 18c side, the nozzle 33b is located on the open end 18o side, and the nozzle 32b is located between the nozzle 31b and the nozzle 33b. To position.

  As shown in FIG. 5, the nozzles 31 b to 33 b have ejection ports 31 o to 33 o that eject the cleaning liquid, respectively. When the cleaning device 10 is in the inserted state, the injection ports 31o to 33o face the inner peripheral surface 18ns of the drum container 18. The direction of each of the injection ports 31o to 33o is preferably such that the injected cleaning liquid corresponds to a portion of the inner peripheral surface 18ns of the rotating drum container 18 that moves from the upper side to the lower side. Each of the injection units 31 to 33 injects the cleaning liquid toward the inner peripheral surface 18 ns.

(0019)
It is preferable that the spray pattern of the cleaning liquid sprayed from the spray ports 31o to 33o is circular, elliptical, or linear. Furthermore, it is preferable that the linear injection pattern extends in the direction of the generatrix of the drum container 18.

  A portion extending in the Y direction opposite to the vertical direction from the axis AX of the drum container 18 is defined as a first line segment L1, and a portion connecting the axis AX and a portion to which the cleaning liquid sprayed from each of the nozzles 31b to 33b is applied is a second line segment L2. When the angle θ1 between the first line segment L1 and the second line segment L2 is preferably 10 ° or more and 90 ° or less, more preferably 20 ° or more and 75 ° or less, It is particularly preferable that the angle is 30 ° or more and 45 ° or less. Note that θ1 represents the rotation direction of the drum container as positive from the first line segment L1. In addition, the portion to which the cleaning liquid ejected from each of the nozzles 31b to 33b is applied may be any one of the downstream end in the rotational direction, the upstream end in the rotational direction, or the intermediate position thereof in the region actually applied with the cleaning liquid.

  As shown in FIG. 4, each nozzle 34b has an ejection port 34o that ejects the cleaning liquid. When the cleaning device 10 is in the inserted state, the inner bottom surface injection unit 34 is arranged so that the injection port 34o and the inner bottom surface 18nt located on the closed end 18c side face each other. The inner bottom surface injection unit 34 injects the cleaning liquid toward the inner bottom surface 18nt.

  As shown in FIG. 5, it is preferable to apply the cleaning liquid sprayed from the inner bottom surface spray unit 34 to a portion other than the bottom portion of the inner bottom surface 18nt. Here, the bottom portion refers to a portion in the drum container 18 where the cleaning liquid sprayed from the nozzles 31b to 34b is accumulated. The cleaning liquid sprayed from the inner bottom surface spray unit 34 may be applied to the entire inner bottom surface 18nt.

  The spray pattern of the cleaning liquid sprayed from the nozzle 34b is preferably circular, elliptical, or linear. Further, it is preferable that the linear injection pattern passes through the axis AX of the drum container 18.

  As shown in FIG. 1, the controller 29 is connected to the motor 24, the cylinder 28 (see FIG. 3), the pump 36, the solenoid valves 41 to 44, the shift unit 56, and the three-way valve 52. And control.

  Next, the operation of the present invention will be described. As shown in FIG. 1, the drum container 18 to be cleaned is disposed on the rotating rollers 21 and 22 and is in a horizontal position. Further, the injection units 31 to 34 are located outside the drum container 18 under the control of the shift unit 56.

  The shift unit 56 inserts the injection units 31 to 34 located outside the drum container 18 into the drum container 18 (see FIG. 4). Thereby, the injection port 34o of the nozzle 34b is opposed to the inner bottom surface 18nt of the drum container 18, and the injection ports 31o to 33o of the nozzles 31b to 33b are opposed to the inner peripheral surface 18ns of the drum container 18 (see FIG. 5). .

  By driving the motor 24, the drum container 18 held by the rotating rollers 21 and 22 rotates in one direction.

  As shown in FIG. 1, the controller 29 closes the solenoid valves 41 to 43 and opens the solenoid valve 44. And by operation of the three-way valve 52 and the pump 36 by the controller 29, the inner bottom surface injection unit 34 injects the cleaning liquid onto the inner bottom surface 18nt. Thereby, the inner bottom surface 18nt is cleaned (see FIG. 6).

  Next, the controller 29 closes the electromagnetic valves 42 to 44 and opens the electromagnetic valve 41 (see FIG. 1). Thereby, the inner peripheral surface 18 ns is cleaned by the first inner peripheral surface injection unit 31 (see FIG. 7A). Thirdly, the controller 29 closes the electromagnetic valves 41 and 43 to 44 and opens the electromagnetic valve 42 (see FIG. 1). Thereby, the inner peripheral surface 18 ns is cleaned by the second inner peripheral surface injection unit 32 (see FIG. 7B). Fourth, the controller 29 closes the electromagnetic valves 41, 42, and 44 and opens the electromagnetic valve 43 (see FIG. 1). Thereby, the inner peripheral surface 18 ns is cleaned by the third inner peripheral surface injection unit 33 (see FIG. 7C). In this way, after cleaning the inner bottom surface 18nt, the inner peripheral surface 18ns is cleaned. In the cleaning of the inner peripheral surface 18ns, the inner peripheral surface 18ns is sequentially cleaned from the closed end 18c side to the opening end 18o side. .

  Similarly, by the operation of the three-way valve 52 and the pump 36 by the controller 29, the injection unit 34 injects rinse to the inner bottom surface 18nt, and then each injection unit 31 to 33 injects rinse to the inner peripheral surface 18ns. The order of the rinsing jets by the jetting units 31 to 33 may be the same as that of the cleaning liquid.

  Then, as shown in FIG. 3B, the drum container 18 is placed at an oblique position by the cylinder 28. As a result, the cleaning liquid and rinse remaining in the drum container 18 can be flowed out of the drum container 18.

  In the present invention, the direction of the injection ports 31o to 33o of the nozzles 31b to 33b is the direction in which the cleaning liquid strikes the portion of the inner peripheral surface 18ns of the rotating drum container 18 that moves downward from the upper side. The cleaning liquid that hits the peripheral surface 18 ns smoothly flows downward. As a result, the formation of the cleaning liquid film on the inner peripheral surface 18 ns can be suppressed, so that the fresh cleaning liquid can be reliably applied to the inner peripheral surface 18 ns.

  Further, when the cleaning liquid is sprayed onto the inner peripheral surface 18 ns, the cleaning liquid film formed on the inner peripheral surface 18 ns contains deposits (dirt) such as emulsion. When the cleaning liquid is sprayed onto such a film, dirt is scattered to the nozzles 31b to 33b. And when the dirt which scattered to nozzles 31b-33b falls to inner peripheral surface 18ns, as a result, cleaning of inner peripheral surface 18ns cannot be performed reliably. According to the present invention, since the formation of the cleaning liquid film on the inner peripheral surface 18 ns can be suppressed, the scattering of dirt that causes recontamination of the inner peripheral surface 18 ns can be avoided.

  Thus, according to the present invention, spray cleaning with a fresh cleaning liquid can be reliably performed.

  In addition, in the said embodiment, although the drum container 18 was moved, this invention is not restricted to this, You may move each injection unit. As shown in FIG. 8, the cleaning device 60 includes an inner peripheral surface injection unit 31 and an inner bottom surface injection unit 34. The inner peripheral surface injection unit 31 and the inner bottom surface injection unit 34 are connected by a connecting member 62. Under the control of the controller 29, the shift unit 64 moves the connecting member 62 to a predetermined position. By the shift unit 64, the inner peripheral surface injection unit 31 and the inner bottom surface injection unit 34 move between the inside and the outside of the drum container 18.

  The nozzles 31b and 34b are moved by the shift unit 64 from the closed end 18c side to the open end 18o side in the direction of the axis AX (X direction) of the drum container 18 while spraying the cleaning liquid in the drum container 18. To do. As a result, the inner peripheral surface 18ns and the outer peripheral surface 18gs can be sequentially cleaned from the closed end 18c side to the open end 18o side.

  In FIG. 8, one inner peripheral surface injection unit 31 is used as the injection unit. However, the present invention is not limited to this, and a plurality of inner peripheral surface injection units as shown in FIG. 1 are used as the injection unit. May be.

  In the above embodiment, the nozzles connected by the connecting member 62 are moved as a unit. However, the present invention is not limited to this, and each nozzle may be provided so as to be movable, and each nozzle may be moved individually.

  In the above embodiment, the cleaning liquid is sprayed on the inner peripheral surface 18 ns and the inner bottom surface 18 nt, but the present invention is not limited to this, and as shown in FIG. 9, in addition to the inner peripheral surface 18 ns and the inner bottom surface 18 nt, You may spray a washing | cleaning liquid. The cleaning unit 80 includes an outer peripheral surface injection unit 81 in addition to the inner peripheral surface injection unit 31, the inner bottom surface injection unit 34, and the pump 36 (see FIG. 1). The pump 36 sends cleaning liquid to the outer peripheral surface injection unit 81 in addition to the inner peripheral surface injection unit 31 and the inner bottom surface injection unit 34.

  The outer peripheral surface injection unit 81 includes a pipe 81a and a nozzle 81b provided on the pipe 81a. As shown in FIG. 10, the nozzle 81b has an ejection port 81o that ejects the cleaning liquid. The nozzle 81 b is arranged so that the injection port 81 o faces the outer peripheral surface 18 gs of the drum container 18.

  The nozzle 31b and the nozzle 81b are arranged so that the injection ports 31o and 81o face each other. Moreover, it is preferable that the spray pattern of the cleaning liquid sprayed from the spray port 81o is circular, elliptical, or linear. Furthermore, it is preferable that the linear injection pattern extends in the direction of the generatrix of the drum container 18.

  The cleaning liquid spray pattern of the nozzle 31b and the cleaning liquid spray pattern of the nozzle 81b may be the same or different. Moreover, when the spray pattern of the cleaning liquid of the nozzle 31b and the spray pattern of the cleaning liquid of the nozzle 81b are both linear, they may cross each other or may overlap.

  In the cleaning of the drum container 18, when a large spray pressure is required to remove the deposits on the drum container 18, a large force acts on the drum container 18 by spraying the cleaning liquid. For this reason, the drum container 18 moves on the rotating rollers 21 and 22 and becomes unstable due to the ejection of the cleaning liquid from the nozzle 31b. As a result, the drum container 18 can be stably washed on the rotating rollers 21 and 22 because the drum container 18 does not rotate smoothly or the drum container 18 falls off the rotating rollers 21 and 22. Can not be done.

  In the present invention, since the injection port 81o of the nozzle 81b faces the injection port 31o of the nozzle 31b, the force applied to the drum container 18 by the cleaning liquid sprayed from the nozzle 81b is the force applied to the drum container 18 by the cleaning liquid sprayed from the nozzle 31b. Can be canceled out in whole or in part. As a result, even when the cleaning liquid is sprayed with a large spraying pressure using the nozzle 31b, the drum container 18 is stabilized on the rotating rollers 21 and 22. As a result, the drum container 18 can be stably cleaned.

  In order for the force due to the cleaning liquid from the nozzle 31b to cancel all or part of the force due to the cleaning liquid from the nozzle 81b, each nozzle 31b, This can be achieved by adjusting the spraying pressure of the cleaning liquid in 81b.

  In the above embodiment, the cleaning liquid is ejected from the outer peripheral surface injection unit 81, but the present invention is not limited to this, and the cleaning liquid is ejected from the outer peripheral surface injection unit 81, but other liquids may be ejected.

  In the above embodiment, the rotation axis of the drum container 18 is the axis AX of the drum container 18, but the present invention is not limited to this, and the drum container 18 may be rotated by an axis parallel to the axis AX of the drum container 18. Good.

  In the above embodiment, the cleaning liquid or the like is sprayed onto the drum container 18 in the horizontal position (see FIG. 3A), but the present invention is not limited to this, and the drum container 18 in the oblique position (see FIG. 3B). Alternatively, a cleaning liquid or the like may be sprayed.

  In the above embodiment, one inner peripheral surface injection unit 31 and one outer peripheral surface injection unit 81 are provided. However, the present invention is not limited to this, and the force received by the drum container 18 by the cleaning liquid from the inner peripheral surface injection unit 31. It suffices if the outer peripheral surface injection unit 81 is arranged at a position where all or a part of the nozzle is canceled. Examples of the arrangement of the nozzles 31 and 32 are shown in FIGS.

  As illustrated in FIG. 11, a plurality of nozzle pairs each including an inner peripheral surface injection unit and an outer peripheral surface injection unit with which the injection ports 31o and 81o face each other may be provided. As shown in FIG. 12, one outer peripheral surface injection unit having a nozzle 31b is provided, and an outer peripheral surface having a nozzle 81b at a position that counteracts the force received by the drum container 18 by the cleaning liquid from the inner peripheral surface injection unit 31. A plurality of injection units may be provided. A plurality of inner peripheral surface injection units having nozzles 31b may be provided. As shown in FIG. 13, two inner peripheral surface injection units having nozzles 31b are provided, and outer peripheral surface injection having nozzles 81b is arranged at a position where the force received by the drum container 18 by the cleaning liquid from the inner peripheral surface injection units is canceled. One unit may be provided. In addition, you may provide multiple outer peripheral surface injection | pouring units which have the nozzle 81b.

  In the above embodiment, the inner peripheral surface injection unit having the nozzle 31b and the outer peripheral surface injection unit having the nozzle 81b are provided. However, the present invention is not limited to this, and a plurality of inner peripheral surface injection units having the nozzle 31b are provided. The other inner peripheral surface injection unit may be disposed at a position where all or part of the force received by the drum container 18 by the cleaning liquid from one inner peripheral surface injection unit is canceled. An example of the arrangement of each nozzle 31b is shown in FIG. In FIG. 14, the right nozzle 31b is for cleaning the drum container 18, and the left nozzle 31b is for canceling all or part of the force received by the drum container 18 by the cleaning liquid from the right nozzle 31b. It is. The left nozzle 31b is preferably provided at a position where the sprayed cleaning liquid flows down before reaching the spray area of the right nozzle 31b. Thus, since the cleaning liquid sprayed from the left nozzle 31b flows down before reaching the spray area of the right nozzle 31b, it does not hinder cleaning by the right nozzle 31b. As described above, the embodiment shown in FIG. 14 can also achieve both cleaning of the drum container 18 and stabilization of rotation of the drum container 18.

  In the said embodiment, although the inner bottom face injection unit 34 was connected and moved to the inner peripheral surface injection unit 31, this invention is not limited to this. For example, after the inner bottom surface injection unit 34 is first inserted into the drum container 18, the inner bottom surface 18nt is cleaned (see FIG. 15). After cleaning, the inner bottom surface injection unit 34 is moved out of the drum container 18. Next, after inserting the inner peripheral surface injection unit 31 into the drum container 18, the inner peripheral surface 18ne may be cleaned. In addition, you may wash | clean the inner peripheral surface 18ne and the outer peripheral surface 18gs using the outer peripheral surface injection unit 81 together as needed (FIG. 16).

  As shown in FIG. 17, an angle θ2 formed by the third line segment L3 and the first line segment L1 extending from the axis AX in the direction in which the cleaning liquid is sprayed from the inner bottom surface spray unit 34 is 10 ° or more and 90 ° or less. Preferably, it is 20 ° or more and 75 ° or less, and more preferably 30 ° or more and 45 ° or less. Note that θ2 represents the rotation direction of the drum container as positive from the first line segment L1. Moreover, as shown in FIG. 18, it is preferable that (theta) 1 and (theta) 2 are equal.

  Furthermore, as shown in FIG. 19, an outer bottom surface injection unit 100 that injects the cleaning liquid onto the outer bottom surface 18gt of the drum container 18 may be used in combination. The outer bottom surface injection unit 100 includes a pipe 100a and a nozzle 100b provided in the pipe 100a. The nozzle 100b has an injection port 100o. The outer bottom surface injection unit 100 is arranged so that the injection port 100o through which the cleaning liquid is injected faces the outer peripheral surface 18gt. The spray pattern of the cleaning liquid of the outer bottom surface spray unit 100 is preferably circular, elliptical, or linear. Moreover, it is preferable that the injection pattern of the outer bottom surface injection unit 100 overlaps the injection pattern of the inner bottom surface injection unit 34.

  In the above embodiment, the cleaning liquid branched by the branch pipe is sent to the plurality of injection nozzles. However, the present invention is not limited to this, and the cleaning liquid may be individually sent from the pump 36 to the plurality of injection nozzles.

(Cleaning solution)
The cleaning liquid preferably dissolves the residue in the drum container 18, although it depends on the composition of the deposits in the drum container 18. As the cleaning liquid, for example, water, particularly water having a temperature of 60 ° C. or higher and 90 ° C. or lower is preferably used. When the deposit on the drum container 18 contains an emulsion containing gelatin, it is preferable to use water at 75 ° C. or more and 85 ° C. Further, as the rinse, it is preferable to use water, particularly pure water.

(Experiment 1)
Using the nozzle 31b, the cleaning liquid was sprayed onto the inner peripheral surface 18ns of the drum container 18 rotating on the rotating rollers 21 and 22, and the drum container 18 was cleaned. The moving speed of the inner peripheral surface 18 ns of the drum container 18 was 400 mm / second. Water at 80 ° C. or higher was used as the cleaning liquid. The cleaning liquid injection pressure P1 was 3 MPa, and the cleaning liquid injection amount was 14 L / min. θ1 was 0 °.

(Experiments 2-9)
In Experiments 2 to 9, the drum container 18 was cleaned in the same manner as in Experiment 1 except that θ1 was changed to that shown in Table 1.

(Drum cleaning evaluation)
Evaluation was based on the following criteria. The evaluation results in Experiments 1 to 21 are shown in Table 1.
A: No emulsion remained in the drum container. Further, no emulsion remained in the nozzle 31b.
○: No emulsion remained in the drum container, but some emulsion remained in the nozzle 31b.
Δ: No emulsion remained in the drum container, but emulsion remained in the nozzle 31b.
X: The emulsion remained in the drum container, and the emulsion remained in the nozzle 31b.

10, 60 Cleaning device 12 Rotating unit 14, 80 Cleaning unit 18 Drum container 21, 22 Rotating roller 24 Motors 31-33 Inner peripheral surface injection unit 34 Inner bottom surface injection unit 81 Outer peripheral surface injection unit 100 Outer bottom surface injection unit

Claims (7)

A rotary unit that holds the drum container whose one end side lies at the open end and rotates the drum container in one direction around the axis of the drum container or an axis parallel to the axis;
An inner peripheral surface cleaning unit that is relatively inserted through the opening end into the drum container and injects a cleaning liquid onto the inner peripheral surface of the drum container;
An inner bottom surface cleaning unit that sprays the cleaning liquid onto the inner bottom surface of the drum container;
The inner peripheral surface cleaning unit injects the cleaning liquid into a portion moved by an angle θ1 from the opposite direction to the rotation direction on the surface orthogonal to the rotation axis,
The said angle (theta) 1 is 10 degrees or more and 90 degrees or less, The washing | cleaning apparatus characterized by the above-mentioned.   The injection unit for injecting liquid to the drum container is arranged at a position where the force received by the drum container by the liquid cancels all or part of the force received by the drum container by the cleaning liquid. The cleaning apparatus according to claim 1.   The cleaning apparatus according to claim 2, wherein the injection unit includes an outer peripheral surface cleaning unit that is provided outside the drum container and injects the cleaning liquid onto the outer peripheral surface of the drum.   The cleaning apparatus according to claim 3, wherein the outer peripheral surface cleaning unit is disposed at a position facing the inner peripheral surface cleaning unit. The inner peripheral surface cleaning unit is provided with a plurality of inner peripheral surface injection nozzles that inject the cleaning liquid and are arranged from the other end side to the one end side,
The injection is performed by sequentially switching from the inner bottom surface cleaning unit to the inner peripheral surface cleaning unit,
5. The spray of the cleaning liquid is performed by sequentially switching from the inner peripheral surface spray nozzle disposed on the other end side to the inner peripheral surface spray nozzle disposed on the one end side. The cleaning apparatus of any one of these. The inner peripheral surface cleaning unit and the inner bottom surface cleaning unit are each provided with a solenoid valve,
6. The cleaning apparatus according to claim 5, wherein the injection is switched by operating the electromagnetic valve.   The cleaning according to any one of claims 1 to 6, further comprising a moving unit that moves the inner peripheral surface cleaning unit and the inner bottom surface cleaning unit between the inside and the outside of the drum container. apparatus.

Images