JP2005102539A - Oil contamination-preventing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil contamination-preventing device which can prevent the infiltration of leaked oil into a tank, even when the leakage of an oil from a speed reducer is occurred. <P>SOLUTION: This oil contamination-preventing device used to prevent the contamination of a liquid with an oil leaked from a reducer, in a stirring apparatus having a moving blade 28 for stirring the liquid stored in the tank 12, a rotation shaft 26 for rotating the moving blade 28, a motor 22 for rotating the rotation shaft, and the reducer 24 disposed between the motor and the rotation shaft is characterized by having a receiving plate 52 disposed around the rotation shaft in a state covering the tank, and an umbrella-shaped member 50 attached to a position between the reducer and the receiving plate on the rotation shaft and opened downward. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an oil mixing prevention device in a dodge tank for storing beer.

Conventionally, in the production process of beer, there is a process of storing beer in a storage tank called a dodge tank. The dodge tank is provided with a stirring mechanism for stirring the beer in the tank.
JP 2002-323143 A

  FIG. 3 is a partially enlarged view showing a configuration of an upper portion of a conventional dodge tank.

  In FIG. 3, the stirring mechanism for stirring beer includes a motor 102 serving as a driving source, a speed reduction mechanism 104 connected to a rotation shaft 102 a of the motor 102 for reducing the rotation of the motor 102, and an output of the speed reduction mechanism 104. And a rotary shaft 106 connected to the shaft and having a stirring blade 108 attached to the lower end thereof.

  In such a conventional agitation mechanism, lubricating oil (oil) is filled in the speed reduction mechanism 104, and if an oil leak occurs from the speed reduction mechanism 104, the oil is rotated as shown by reference numeral 110. There was a risk of entering the tank through the path and entering into the beer. Of course, when oil is mixed in the beer, all the beer in the tank must be discarded. Therefore, the speed reduction mechanism 104 is designed with due consideration not to cause oil leakage. When a leak occurs, the beer in the tank must be discarded and the tank must be cleaned, which has the problem of significantly reducing productivity.

  Accordingly, the present invention has been made in view of the above-described problems, and an object thereof is to prevent leaked oil from entering the dodge tank even when oil leakage from the speed reduction mechanism occurs.

  In order to solve the above-described problems and achieve the object, an oil mixing prevention device according to the present invention includes a rotating blade for stirring liquid stored in a tank, and a rotating shaft for rotating the rotating blade. An agitation device comprising: a motor for rotationally driving the rotary shaft; and a speed reduction mechanism disposed between the motor and the rotary shaft for decelerating and transmitting the rotation of the motor to the rotary shaft. An oil mixing prevention device for preventing oil leaking from the speed reduction mechanism from being mixed into the liquid, wherein the receiving tank is disposed around the rotating shaft so as to cover the tank. A plate, and an umbrella-like member that is open to the bottom and is attached to a portion of the rotating shaft that is positioned between the speed reduction mechanism and the receiving plate.

  In the oil mixing prevention apparatus according to the present invention, the umbrella-shaped member is made of a white material.

  In the oil mixing prevention apparatus according to the present invention, the umbrella-shaped member is formed of a rubber material.

  Further, in the oil mixing prevention device according to the present invention, a step for preventing the oil accumulated on the receiving plate from entering between the receiving plate and the rotating shaft is formed on the inner peripheral portion of the receiving plate. A portion is formed.

  In the oil mixing prevention device according to the present invention, oil may enter between the receiving plate and the rotating shaft between the inner peripheral surface of the receiving plate and the outer peripheral surface of the rotating shaft. A sealing member for prevention is arranged.

  The oil mixing prevention device according to the present invention further includes a housing that covers the periphery of the umbrella-shaped member, and the side wall of the housing is used for releasing oil accumulated on the receiving plate to the outside of the housing. An opening hole is formed.

  The oil mixing prevention apparatus according to the present invention further comprises a housing that covers the periphery of the umbrella-shaped member, and a window for observing the inside of the housing is provided on a side wall of the housing. Features.

  In the oil mixing prevention apparatus according to the present invention, a cleaning unit for ejecting a cleaning liquid to clean the inside of the tank is disposed on the rotating shaft.

  According to the present invention configured as described above, even when oil leakage from the speed reduction mechanism occurs, it is possible to prevent the leaked oil from entering the dodge tank.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a side view showing an embodiment of a dodge tank to which an oil mixing prevention device of the present invention is applied.

  In FIG. 1, a dodge tank 10 includes a tank main body 12 for storing beer, and an agitation mechanism 20 disposed in the tank main body 12 for agitating the beer in the tank main body 12. The agitation mechanism 20 includes a motor 22 as a drive source disposed on the upper portion of the tank body 12, a speed reduction mechanism 24 connected to a rotation shaft 22 a of the motor 22 for reducing the rotation of the motor 22, and an output of the speed reduction mechanism 24. And a rotary shaft 26 connected to the shaft and having a stirring blade 28 attached to the lower end thereof.

  The rotating shaft 22 a and the rotating shaft 26 of the motor 22 are formed hollow, and the cleaning water supplied from the cleaning water supply unit 30 is supplied from the rotating shaft 22 a of the motor 22 and a pipe (not shown) in the speed reduction mechanism 24. And the inside of the rotating shaft 26, supplied to the cleaning unit 32, and ejected from a spray ball 34 provided at the tip of the cleaning unit 32. In this configuration, after the tank body 12 is emptied, the cleaning of the tank body 12 can be performed by ejecting cleaning water from the spray ball 34 while rotating the rotating shaft 26.

  A manhole 12a is provided in the upper part of the tank body 12, so that an operator can observe the inside of the dodge tank as required.

  FIG. 2 is a partially enlarged view showing the structure of the upper part of the dodge tank of this embodiment.

  In FIG. 2, as already described, the stirring mechanism 20 is connected to the motor 22 as a drive source disposed on the upper portion of the tank body 12 and the rotating shaft 22 a of the motor 22 to decelerate the rotation of the motor 22. A speed reduction mechanism 24 and a rotating shaft 26 connected to the output shaft of the speed reduction mechanism 24 and having a stirring blade 28 attached to the lower end thereof are provided. With this configuration, the rotation speed of the motor 22 is decelerated by the speed reduction mechanism 24, the rotation shaft 26 and the blades 28 rotate at a desired rotation speed, and the beer is stirred.

  The speed reduction mechanism 24 is a speed reduction mechanism using a well-known gear mechanism, and is filled with lubricating oil (oil) in order to smoothly mesh the gears.

  An umbrella-shaped member 50 is attached to a position of the rotating shaft 26 between the speed reduction mechanism 24 and the tank inner shaft portion 26 a located inside the tank body 12 in a state where the umbrella-shaped member 50 is opened downward. The umbrella-shaped member 50 is for receiving oil and dropping the oil to a position away from the outer peripheral surface of the rotating shaft 26 in the event of oil leakage from the speed reduction mechanism 24. The umbrella-like member 50 is formed of a white rubber material. When the umbrella-like member 50 is white, when oil adheres to the umbrella-like member 50, the umbrella-like member 50 can be easily confirmed visually, and oil leakage is caused early. Can be found in.

  Below the umbrella-like member 50, a receiving plate 52 is provided for receiving oil falling from the umbrella-like member 50 and guiding the rotary shaft 26 rotatably. A stepped portion 52 a is provided on the inner peripheral portion of the receiving plate 52 in order to block the oil received by the receiving plate 52 from entering the gap between the rotating shaft 26 and the receiving plate 52. Further, even when the oil on the receiving plate 52 gets over the stepped portion 52a, the rubber seal member 54 is disposed in the stepped portion 52a so that the oil does not enter the gap between the rotating shaft 26 and the receiving plate 52. It is disposed between the peripheral surface and the outer peripheral surface of the rotating shaft 26.

  Further, the periphery of the umbrella-shaped member 50 is covered with a housing 54 fixed to the tank main body 12, and the housing 54 has an opening hole for allowing oil received by the receiving plate 52 to escape to the outside of the housing 54. 56a is provided. This prevents oil from accumulating on the receiving plate 52.

  Further, a window 58 is provided on the side surface of the housing 54 so that an operator can observe the inside from the window 58. As already described, since the umbrella-shaped member 50 is formed of a white material, when the operator peeks through the window 58, the oil attached to the umbrella-shaped member 50 can be easily confirmed, and oil leakage occurs. Can be discovered early.

  As described above, according to the above embodiment, even if oil leaks from the speed reduction mechanism 24, the oil can be dropped to a position away from the outer peripheral surface of the rotary shaft 26 by the umbrella-like member 50. In addition, since the dropped oil can be received by the receiving plate 52, it is possible to reliably prevent the oil from being mixed into the beer.

  Moreover, since the umbrella-shaped member 50 is formed of a white material, oil leakage can be easily found.

  Moreover, since the opening hole 56a is provided in the housing around the umbrella-shaped member 50 so that the oil on the receiving plate 52 is released to the outside, the oil accumulated on the receiving plate 52 is further mixed into the beer. Can be prevented.

  Furthermore, by providing the window 58 in the housing around the umbrella-like member 50, an operator can easily find an oil leak visually.

It is a side view which shows one Embodiment of the dodge tank to which the oil mixing prevention apparatus of this invention was applied. It is the elements on larger scale which show the structure of the upper part of the dodge tank of one Embodiment. It is a figure which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Dodge tank 12 Tank main body 20 Deceleration mechanism 22 Motor 24 Deceleration mechanism 26 Rotating shaft 28 Blade 30 Washing water supply part 32 Washing unit 34 Spray ball 50 Umbrella-shaped member 52 Receiving plate 54 Seal member 56 Housing 56a Opening hole 58 Window

Claims (8)

A rotating blade for stirring the liquid stored in the tank, a rotating shaft for rotating the rotating blade, a motor for rotationally driving the rotating shaft, and between the motor and the rotating shaft Oil for preventing the oil leaking from the speed reduction mechanism from being mixed into the liquid used in a stirrer having a speed reduction mechanism for reducing the speed of rotation of the motor and transmitting it to the rotation shaft A mixing prevention device,
A backing plate disposed around the rotating shaft in a state of covering the tank;
An umbrella-shaped member that opens below and is attached to a portion of the rotating shaft located between the speed reduction mechanism and the receiving plate;
An oil mixing prevention device comprising: The oil mixing prevention device according to claim 1, wherein the umbrella-shaped member is made of a white material. The oil mixing prevention apparatus according to claim 2, wherein the umbrella-shaped member is made of a rubber material. A step portion for preventing oil accumulated on the receiving plate from entering between the receiving plate and the rotating shaft is formed in an inner peripheral portion of the receiving plate. Item 2. The oil mixing prevention device according to Item 1. A seal member is disposed between the inner peripheral surface of the backing plate and the outer peripheral surface of the rotating shaft to prevent oil from entering between the receiving plate and the rotating shaft. The oil mixing prevention device according to claim 1, wherein: The housing further includes a housing that covers the periphery of the umbrella-shaped member, and an opening hole is formed in the side wall of the housing for allowing oil accumulated on the receiving plate to escape to the outside of the housing. The oil mixing prevention device according to claim 1. The oil mixing prevention according to claim 1, further comprising a housing that covers the periphery of the umbrella-shaped member, wherein a side wall of the housing is provided with a window for observing the inside of the housing. apparatus. The oil mixing prevention device according to claim 1, wherein a cleaning unit for ejecting a cleaning liquid to clean the inside of the tank is disposed on the rotating shaft.

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