JP4531790B2 - Tank cleaning device - Google Patents

Description

  The present invention relates to a tank cleaning device used for cleaning a tanker tank, for example.

  2. Description of the Related Art Conventionally, a cleaning device used for cleaning a tanker tank is known. The tank cleaning device includes a cleaning unit to which an injection nozzle is attached, and the partition in the tank is cleaned by inserting the cleaning unit into the tank and injecting cleaning water from the injection nozzle. In the tank cleaning device, the entire cleaning unit and the injection nozzle are rotated so that the entire inside of the tank can be cleaned. For this reason, the tank cleaning apparatus includes a drive unit for rotationally driving the cleaning unit. Patent Document 1 describes a tank cleaning apparatus in which a drive unit is integrally attached to a cleaning unit, and both the drive unit and the cleaning unit are inserted into a tank. However, when the drive unit and the cleaning unit are integrated, there is a problem that both the cleaning unit and the drive unit must be taken out of the tank when repairing or maintaining, and the usability is poor.

  On the other hand, there is known a drive separation type tank cleaning device in which the drive unit and the cleaning unit are separated and the drive unit is provided outside the tank (see Patent Document 2). By providing the drive unit outside the tank, repair and maintenance are facilitated. FIG. 2 shows a configuration of a tank cleaning apparatus described in Patent Document 2 as an example of a conventional tank cleaning apparatus. The tank cleaning apparatus includes a drive unit 110 that is attached to the upper side of the upper deck 101 of the tank upper surface. The drive unit 110 is connected to the cleaning unit 120 inserted into the tank via a connecting cylinder 121. The cleaning unit 120 includes a swivel cylinder 122 and an injection nozzle 123. A turning shaft 124 that transmits the rotational driving force of the driving unit 110 to the cleaning unit 120 is inserted into the connecting cylinder 121. The drive unit 110 includes a casing 111 and a gear box 112. The casing 111 is provided with an intake pipe 118 that takes in the cleaning water 100. The intake pipe 118 extends in the horizontal direction, and the cleaning water 100 is supplied from the horizontal direction. The intake pipe 118 is divided into two passages in the casing 111, an impeller 116 is inserted into one passage, and an opening / closing valve 119 is interposed in the other passage. The gear box 112 is provided at the upper part of the intake pipe 118 and has a gear train 113 therein and is sealed. The rotary shaft on the inlet side of the gear box 112 protrudes toward the casing 111 and is attached with an impeller 116. The rotary shaft 115 on the outlet side also protrudes toward the casing 111 side. The rotating shaft 115 is connected to the turning shaft 124.

In this tank cleaning device, as described in paragraph [0011] of Patent Document 2, when water is supplied from the intake pipe 118 of the drive unit 110, the impeller 116 rotates and the rotational force causes the gear train 113 to rotate. The swivel shaft 124 is rotated through the swivel shaft 122 and the swivel cylinder 122 is rotated around the vertical axis. On the other hand, the wash water 100 supplied from the casing 111 to the inside of the swivel cylinder 122 via the opening / closing valve 119 and the inside of the connecting cylinder 121 injects a water flow from the nozzle opening while rotating the injection nozzle 123 around the horizontal axis. To do. The jet water radiates radially in the vertical plane, and the jet direction continuously changes by 360 ° by the swivel cylinder 122, so that the partition walls, the bottom face, and the top face in the tank can be washed. Moreover, since this jet water swirls also in a horizontal surface, the whole surface in a tank can be wash | cleaned.
Japanese Utility Model Publication No. 7-544 Japanese Patent Laid-Open No. 2005-81221

  Here, in the structure described in Patent Document 2, the cleaning water 100 is sealed so as not to enter the gear box 112 of the drive unit 110. However, in the structure described in Patent Document 2, a gear mechanism (gear train 113) for rotationally driving the pivot shaft 124 is provided in the gear box 112 above the intake pipe 118. Lubricating oil is required in the gearbox 112 to move the In this case, although the gear box 112 is hermetically sealed, it is connected to the tank via the rotary shaft 115 and the pivot shaft 124, so that the lubricating oil is passed from the gear box 112 via the rotary shaft 115 and the pivot shaft 124. There is a risk of leakage into the cleaning unit 120. And there exists a possibility that lubricating oil may be discharge | released from the injection nozzle 123 of the washing | cleaning part 120, and the inside of a tank may be soiled. For this reason, there is a problem in terms of cleaning performance.

  The present invention has been made in view of such a problem, and the object thereof is to separate the drive unit and the cleaning unit into a user-friendly configuration, while the drive unit does not require lubricating oil inside the tank without lubricating oil. It is an object to provide a tank cleaning apparatus that is excellent in cleaning performance and that does not cause soiling.

A tank cleaning apparatus according to the present invention includes a cleaning unit that is inserted into a tank and provided with an injection nozzle for spraying cleaning water, a drive transmission rod having a lower end connected to the cleaning unit, and an upper end of the drive transmission rod. A pipe that is connected to the whole and is provided outside the tank, and rotates the cleaning unit via a drive transmission rod, and a pipe in which cleaning water is taken in from one end and the other end is connected to the upper end of the driving unit. A cleaning water intake part, a cleaning part and a drive part are connected, a drive transmission rod is penetrated inside, and a connecting cylinder into which the cleaning water taken in from the cleaning water intake part flows is provided. The cleaning water taken in from the take-in portion is configured to be supplied to the wash portion via the connecting cylinder after flowing into the drive portion from the upper end portion of the drive portion. Moreover, the drive part has a gear mechanism inside. Gear mechanism, with cleaning water which has flowed into the inside of the drive unit from the top portion of the captured from the wash water uptake section drive unit, a state which is entirely flooded, drive transmission to obtain a rotational driving force hydraulically by the washing water also the in is Ru rotate the rod.

In the tank cleaning apparatus according to the present invention, the drive unit is separated from the cleaning unit, and the cleaning water intake unit is connected to the upper end of the drive unit. And after the washing water taken in from the washing water taking-in part flows into the inside of a drive part from the upper end part of a drive part, it is supplied to a washing part via a connecting pipe. The gear mechanism in the drive unit is taken in from the cleaning water intake unit, obtains a rotational driving force by the cleaning water flowing into the drive unit from the upper end of the drive unit , and rotates the drive transmission rod. Since the gear mechanism is configured to obtain a rotational driving force by the wash water that has flowed into the interior, the lubrication oil is necessary, unlike the conventional system in which the drive mechanism is sealed and the gear mechanism is moved using the lubricant. And not. As a result, there is no risk of oil leakage while the drive separation type configuration is easy to use, and the cleaning performance is improved.

In the tank cleaning device according to the present invention, the gear mechanism inside the drive unit is, for example, a gear wheel connected to the upper end of the drive transmission rod and the wash water intake unit, and the drive unit from the upper end of the drive unit to the inside of the drive unit. An impeller that is rotated by the flow of the wash water that has flowed into the turbine, a turbine shaft that is coupled to the impeller and is driven to rotate by the rotation of the impeller, and a pinion mechanism that transmits the rotational power of the turbine shaft to the gear wheel. be able to.

In this case, a rectifying member that is provided upstream of the impeller, is taken in from the cleaning water intake unit, and rectifies the cleaning water flowing into the drive unit from the upper end of the drive unit is provided inside the drive unit. You may do it.

  According to the tank cleaning apparatus of the present invention, the drive unit is separated from the cleaning unit, the cleaning water intake unit is connected to the upper part of the drive unit, and the cleaning water that is taken in from the cleaning water intake unit and flows into the inside As a result, the gear mechanism inside the drive unit obtains the rotational driving force and rotates the drive transmission rod to drive the cleaning unit. Therefore, the drive unit and the cleaning unit are separated from each other to make the configuration easy to use. Lubricating oil is not required inside, and excellent cleaning performance can be realized without the risk of contaminating the tank with lubricating oil.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a configuration example of a tank cleaning apparatus according to an embodiment of the present invention. This tank cleaning apparatus includes a cleaning unit 1 inserted into the tank, a driving unit 2 that is provided outside the tank and drives the cleaning unit 1, and an extension pipe unit 3 that connects the cleaning unit 1 and the driving unit 2. , And a washing water intake unit 4 that is connected to the upper part of the drive unit 2 and takes in the washing water 100.

  The extension pipe portion 3 has a connecting cylinder 32 through which a drive shaft (drive transmission rod) 31 penetrates and into which the washing water 100 taken in from the washing water intake portion 4 flows. The washing water intake unit 4 includes an intake port 41 for taking in the washing water 100, a valve 42 for adjusting the flow of the taken washing water 100, one end connected to the valve 42, and the other end at the upper end of the drive unit 2. And an L-shaped pipe 43 connected to the section. This tank cleaning apparatus is configured such that the cleaning water 100 taken from the washing water intake unit 4 is supplied to the cleaning unit 1 via the connecting cylinder 32 after flowing into the drive unit 2. .

  The cleaning unit 1 includes a cleaning unit main body 11 to which cleaning water 100 is supplied via a connecting cylinder 32, and an injection nozzle 12 attached in the horizontal (X-axis) direction of the cleaning unit main body 11. The upper end of the cleaning unit main body 11 is rotatably attached to the lower end of the connecting cylinder 32 by the lower mounting flange 6. Further, the lower end portion of the drive transmission rod 31 is attached to the cleaning unit main body 11. As a result, the cleaning unit 1 is rotated (turned) 360 degrees clockwise, for example, in the horizontal plane with the vertical axis (Y axis) as the rotation axis by the rotational driving force transmitted by the drive transmission rod 31. Yes. The spray nozzle 12 rotates (rotates), for example, clockwise 360 degrees in a vertical plane with the horizontal axis (X axis) as a rotation axis by the flow of the cleaning water 100 supplied to the cleaning unit main body 11 via the connecting cylinder 32. At the same time, the cleaning water 100 is jetted radially from the tip.

  The bottom of the drive unit 2 is connected to the upper portion of the extension pipe unit 3 and is fixed to a hatch 102 provided on the upper deck 101 of the tank upper surface by an upper mounting flange 5. The driving unit 2 has a gear mechanism that rotates the drive transmission rod 31 by obtaining a rotational driving force by the cleaning water 100 taken in from the cleaning water intake unit 4 and flowing into the driving unit 2. The entire gear mechanism is submerged by the wash water 100 that has flowed into the drive unit 2. The washing water intake part 4 is attached to the upper part of the drive part 2, and since the water pressure is applied from the upper part, it is easy to operate the gear mechanism.

  The gear mechanism in the drive unit 2 includes an impeller (impeller) 22, a turbine shaft 23, a horizontal shaft 24, a pinion gear 25, and a gear wheel 26. The gear wheel 26 is connected to the upper end portion of the drive transmission rod 31. The impeller 22 has an impeller shape and is rotated by the water flow of the washing water 100 taken from the washing water intake unit 4. The turbine shaft 23 is connected to the impeller 22 and is rotationally driven by the rotation of the impeller 22. The horizontal shaft 24 and the pinion gear 25 form a pinion mechanism that transmits the rotational power of the turbine shaft 23 to the gear wheel 26. The rotational power of the turbine shaft 23 is applied to the pinion gear 25 via a horizontal shaft 24 attached to the turbine shaft 23 in the horizontal direction so that the pinion gear 25 rotates. The pinion gear 25 is meshed with the gear wheel 26. Thereby, the gear wheel 26 rotates.

  A rectifying member (impeller guide) 21 that rectifies the cleaning water 100 taken from the cleaning water intake unit 4 is also provided in the drive unit 2 upstream of the impeller 22. The impeller guide 21 has, for example, a grid-like rectifying plate structure, and is for uniformly rotating a water flow in a horizontal plane to efficiently rotate the impeller 22.

  In addition, although the rotating shaft is converted into the different direction between the turbine shaft 23 and the horizontal shaft 24, such an axis conversion is realizable by the worm gear mechanism using a worm wheel (not shown). For example, a worm gear can be formed by using a worm (screw gear) as the turbine shaft 23 and providing a worm wheel combined with the worm at the joint between the turbine shaft 23 and the horizontal shaft 24. Similarly, the horizontal shaft 24 and the pinion gear 25 can be converted in axis by a worm gear mechanism in which a worm wheel is provided at the joint. It is preferable that the gear mechanism in the drive unit 2 is composed of a combination of metal and plastic. By constituting a part of the plastic material, it is possible to reduce the weight of the gear mechanism. Moreover, it becomes easy to move a gear mechanism smoothly with a water flow. For example, the worm wheel may be made of plastic.

Next, the operation of the tank cleaning apparatus configured as described above will be described.
In this tank cleaning apparatus, the drive unit 2 is separated from the cleaning unit 1, and the cleaning water intake unit 4 is connected to the upper part of the drive unit 2. Then, the cleaning water 100 taken from the washing water intake unit 4 flows into the drive unit 2 and then supplied to the cleaning unit 1 via the connecting cylinder 32. The gear mechanism inside the drive unit 2 is taken in from the cleaning water intake unit 4, obtains a rotational driving force by the cleaning water 100 flowing into the inside, and rotates the drive transmission rod 31. Specifically, the cleaning water 100 that has flowed into the interior is first rectified by the impeller guide 21, and the impeller 22 is rotated by the flow of the rectified cleaning water 100. Then, the turbine shaft 23 is rotationally driven by the rotational force of the impeller 22. The rotational power of the turbine shaft 23 is transmitted to the gear wheel 26 through the horizontal shaft 24 and the pinion gear 25, and the gear wheel 26 rotates. The drive transmission rod 31 is rotationally driven by the rotation of the gear wheel 26.

  As a result, the cleaning unit 1 connected to the drive transmission rod 31 rotates (turns) 360 ° clockwise, for example, in the horizontal plane with the vertical axis (Y axis) as the rotation axis. On the other hand, the cleaning water 100 supplied to the inside of the cleaning unit main body 11 through the inside of the connecting cylinder 32 rotates (turns) the spray nozzle 12 around the horizontal axis (X axis), and the cleaning water 100 from the tip thereof. Are sprayed radially. In this way, the jet water jumps 360 ° radially in the vertical plane, and the entire cleaning unit 1 rotates in the horizontal plane, whereby the entire surface in the tank can be cleaned.

  As described above, according to the tank cleaning apparatus according to the present embodiment, the gear mechanism is configured to obtain the rotational driving force by the cleaning water 100 that has flowed into the inside thereof. Unlike the conventional method (FIG. 2) in which the gear mechanism is moved using the lubricating oil, the cleaning water 100 itself plays the role of the lubricating oil, so that the lubricating oil is not required. As a result, there is no risk of oil leakage while the drive separation type configuration is easy to use, and the cleaning performance is improved.

  Further, in the conventional structure, the cleaning water 100 flows from the horizontal direction of the drive unit 2, but in the tank cleaning device of the present embodiment, the cleaning water 100 flows from the upper part of the drive unit 2, The gear mechanism can be moved efficiently.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible. For example, the gear mechanism inside the drive unit 2 is not limited to the example shown in FIG. 1 and can take other forms. The tank cleaning apparatus of the present invention is not limited to a tanker, and may be used for other tank cleaning applications such as cleaning in a tank fixed on the ground.

It is sectional drawing which shows one structural example of the tank cleaning apparatus which concerns on one embodiment of this invention. It is sectional drawing which shows the structural example of the conventional tank cleaning apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Cleaning part, 2 ... Drive part, 3 ... Extension pipe part, 4 ... Washing water taking-in part, 5 ... Upper mounting flange, 6 ... Lower mounting flange, 11 ... Cleaning part main body, 12 ... Injection nozzle, 21 ... Impeller Guide (rectifying member), 22 ... Impeller (impeller), 23 ... Turbine shaft, 24 ... Horizontal shaft, 25 ... Pinion gear, 26 ... Gear wheel, 31 ... Drive shaft (drive transmission rod), 32 ... Connecting cylinder, 41 ... Inlet, 42 ... Valve, 43 ... L-shaped pipe, 100 ... Washing water, 101 ... Upper deck, 102 ... Hatch.

Claims (3)

A cleaning unit inserted in the tank and provided with an injection nozzle for injecting cleaning water;
A drive transmission rod having a lower end connected to the cleaning unit;
A drive unit coupled to the upper end of the drive transmission rod, and provided entirely outside the tank, for rotating the cleaning unit via the drive transmission rod;
Washing water is taken in from one end side, and the other end is connected to the upper end of the drive unit, a pipe-shaped washing water intake unit,
The cleaning part and the drive part are connected, the drive transmission rod is penetrated inside, and a connecting cylinder into which the cleaning water taken in from the cleaning water intake part flows is provided, from the cleaning water intake part The taken-in cleaning water flows into the drive unit from the upper end of the drive unit, and is then supplied to the cleaning unit via the connecting cylinder.
The drive unit has a gear mechanism inside,
The gear mechanism is
The washing water flows into the driving portion from the upper end of the captured from the washing water uptake unit the drive unit, the whole becomes a state of being flooded, the drive transmission rod to give a rotational driving force hydraulically by the washing water A tank cleaning device characterized by being made to rotate. The gear mechanism inside the drive unit is
A gear wheel coupled to the upper end of the drive transmission rod;
An impeller that is taken in from the washing water intake unit and rotates by the flow of the washing water flowing into the driving unit from the upper end of the driving unit ;
A turbine shaft connected to the impeller and driven to rotate by rotation of the impeller;
The tank cleaning device according to claim 1, further comprising: a pinion mechanism that transmits rotational power of the turbine shaft to the gear wheel. Further, a rectifying member provided on the upstream side with respect to the impeller, which is taken in from the cleaning water intake unit and rectifies the cleaning water flowing into the driving unit from the upper end of the driving unit , is provided in the driving unit. The tank cleaning apparatus according to claim 2, wherein the tank cleaning apparatus is provided.

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