JPH06226731A - Device for cleaning inner part of tank or the like - Google Patents

Abstract

PURPOSE:To provide a device for effecting water cleaning in the inside of a tank, which is inserted into a tank or the like through a hole having a small diameter. CONSTITUTION:On the tip end of a beam 1 slidably supported on a pillar, there is provided a nozzle support arm 12 that can rotate about an axis in the axial direction of the beam, and nozzle attachment seats 15, 16 rotatably secured on the tip end both sides of the nozzle support arm, wherein in the direction intersecting the axis of the nozzle attachment seats, linear injection type nozzles 15a, 15b, 16a are fixed in a manner being positioned outside of the beam. By rotating (swiveling) the nozzle attachments at different cycles at the same time of rotation of the nozzle support arm 12, the injecting direction of the nozzle is shifted to the three dimensional injecting direction, and cleaning is effected by spouting a linear injection water stream toward the entire surface within the tank.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning water inside a container such as a tank.

[0002]

2. Description of the Related Art Conventionally, when cleaning the inside of a container such as a tank, for example, a cement mixer, water is stored in the container and stirred, or a hose is inserted from the outside for cleaning, depending on the size of the container. Workers enter inside to wash off water and remove deposits by hand.

Particularly in a mixer for producing ready-mixed concrete, in order to prevent the residue from adhering and solidifying and maintaining the quality, it is necessary to wash the residue inside the mixer at the end of the work or at the time of changing the admixture. Although it is washed with washing water as described above, one of the concrete mixer trucks for transportation has a large opening and the stirring blades are simple. Therefore, for example, insert it into the drum as in Japanese Utility Model No. 2-80411. There has been proposed an apparatus that is provided with a nozzle attached to the tip of a beam that crosses the beam axis and that reciprocates back and forth in the injection direction, and that moves the beam within the drum while rotating the drum to perform cleaning.

However, in the case where a rotating blade is provided in a closed tank, such as a two-shaft forced kneading mixer which has been used recently as a fixed mixer, the above-mentioned cleaning device cannot clean the entire surface of the tank. Water is poured into the tank to wash it off, or a hose is inserted from the peep hole to wash it off, and then an operator enters through the peep hole to wash the unwashed portion and removes it with a hammer.

Further, a nozzle attached to the tip of a beam inserted in a tank is rotated by the reaction force of water to be sprayed to change the spraying direction, or an actual flat blade 2-26.
As proposed in Japanese Patent No. 5710, one in which a washing pipe is separately attached inside the mixer and high-pressure water is sent at the time of washing and jetted from a large number of water spray nozzles provided in the pipe is used.

[0006]

However, even if water is stored in the tank and stirred or washed through the peephole, sufficient washing cannot be performed, and the back side of the stirring blade or the recessed portion of the shaft,
There are drawbacks such as solidification with residue remaining on the corners of the container, and deterioration of quality due to mixing of residue from different admixtures.Therefore, it is not possible for an operator to enter the tank to remove the residue. However, the work environment is bad, and it not only complicates the work, but also causes an accident.

Further, in the case where the nozzle is rotated by the reaction of the injection, there is a drawback that the water pressure of the injection is reduced and the cleaning effect is deteriorated. In the case where the cleaning pipe and the nozzle are provided in the tank, the structure inside the tank is In addition to making it complicated, it is necessary to increase the number of nozzles and the amount of water sprinkled, which complicates wastewater treatment and may cause cement etc. in the tank to scatter and clog the nozzles, making maintenance inconvenient. There is.

[0008]

In view of the above points, the present invention has a beam slidably supported by a column and can be inserted through a small diameter hole of a container to be cleaned at the time of cleaning into a beam axial direction. With a nozzle support arm that rotates about an axis and a nozzle mounting seat that can rotate in a direction that intersects with the axis of the nozzle support arm, and a straight-ahead jet type nozzle that is oriented in a direction that intersects with the axis of the nozzle mounting seat. The jet water flow is mounted at a position where it does not hit the beam, and the nozzle mounting seat is reciprocally rotated or rotated at different cycles as the nozzle support arm rotates.

[0009]

Therefore, the beam can be inserted through the small diameter hole, and the injection direction of the nozzle attached to the tip is changed from the two-dimensional direction by the rotation (rotation) of the nozzle mounting seat to the three-dimensional direction by the rotation of the nozzle support arm. A straight jet water stream is continuously emitted and moved toward the entire surface of the tank with a small number of nozzles, and the residue is washed.

[0010]

EXAMPLE An example shown in the drawings will be described in detail. 1 is held by the beam so that it can slide on the column 2,
It is operated by a motor 4 by a chain 3 along the beam. A water conduit 5 is provided inside the beam 1, and a gear 6
It is rotated by the motor 7 via. Reference numeral 8 is a hose for supplying pressurized water to the water conduit 5, 9 is a tank to be cleaned such as a cement mixer, and 10 is a peep hole.

Reference numeral 11 is a rotary box provided at the tip of the beam 1 and connected to the water guide pipe 5, 12 is a nozzle support arm projecting from the rotary box in the axial direction of the beam, and 13 is a water supply passage in the nozzle support arm. Water channel 1 in the rotating box
It is connected to the water conduit 5 via 4.

Reference numerals 15 and 16 denote nozzle mounting seats which are rotatably mounted on both sides of the nozzle support arm 12 so as to intersect with the axial center direction of the nozzle support arm 12. Nozzles 15a, 15b and 16a, 1
6b is attached, the nozzle 15 of the nozzle mounting seat 15
a, 15b and nozzles 16a, 16b of the nozzle mounting seat 16
And are attached at right angles. Reference numeral 17 is an internal gear fixed to the beam 1, 18 is a drive shaft provided in the rotating box 11 in parallel with the beam 1, and the spur gear 19 is the internal gear 17
Is biting into.

Reference numeral 20 denotes a transmission device provided on the rotary box 11 for rotating a nozzle mounting seat. The drive gear 21 mounted on the drive shaft 18 and the helical gear 23 mounted on the operation shaft 22 are meshed with each other to form both ends of the operation shaft 22. The crank arms 24 and 25 provided on the
Crank arm 2 of nozzle mounting seats 15 and 16 via
It is connected to 8 and 29.

For simplification of explanation, the drive shaft 1 is rotated by rotating the water pipe 5 and thus the rotary box 11 once.
Crank arm 24, 2 of transmission 20 driven by 8
5 is the nozzle mounting seat 1 through the crank rods 26 and 27.
5 and 16 will be described as being reciprocally rotated at a rotation angle of 90 °.

At the time of cleaning, the tip of the beam 1 is inserted into the tank 9 to be cleaned through the peep hole 10, the peek hole is appropriately closed with a sheet, etc., and the stirring blade is rotated, and the water guiding pipe 5 is driven by the motor 7. While rotating, the beam 1 is lowered, and pressurized water is supplied from the hose 8 to each nozzle via the water conduit 5, the water supply passage 14, and the water supply passage 13.

When the water guide pipe 5 in the beam 1 is rotated by the motor 7 via the gear 6, the nozzle support arm 12 is rotated together with the rotation box 11, and the entire nozzle is rotated about the axis of the nozzle support arm 12. . With this rotation, the spur gear 19 of the drive shaft 18 changes the internal gear 1 of the arm.
7, the drive shaft 18 is rotated, and the drive gear 21 of the transmission device rotationally drives the operation shaft 22 via the helical gear 23. Therefore, the crank arms 24, 25
Rotates the nozzle mounting seats 15 and 16 reciprocally through the crank rods 26 and 27 at a rotation angle of 90 °.

Therefore, as shown in FIG. 4A, the injection direction of the nozzle 15a is two-dimensionally moved leftward from the downward position of the state A by the rotation of the nozzle mounting seat 15 in the direction of the arrow. With the nozzle support arm 12 90 °
The rotation causes the nozzle to change to the forward direction, and the injection direction of the nozzle changes from the lower surface to the front surface of the tank in a three-dimensional arc-shaped locus to be in the B state.

When the nozzle mounting seat 15 is rotated in the opposite direction from the B state and the nozzle support arm 12 is further rotated 90 ° to change to the C state, the direction of the nozzle is changed from the forward direction to the downward direction. In the D state in which the support arm 12 further rotates 90 ° and the nozzle mounting seat 15 rotates in the opposite direction, the support arm 12 is displaced rearward, and the next 90 ° rotation of the nozzle supporting arm 12 and rotation of the nozzle mounting seat 15 in the opposite direction. The movement returns to the downward A state. In this way, the nozzle 15a performs cleaning by radiating a continuous straight-ahead jet water flow that shifts in the front-back direction below the nozzle position for each rotation of the nozzle support arm 12.

Simultaneously with this, the nozzle 15b on the opposite side is similarly rotated by the rotation of the nozzle support arm 12 and the nozzle mounting seat 15 from upward in the state A to backward in the state B,
The state changes to upward in the state C, then returns to the state A in the upward direction through the D state in the forward direction, and radiates a straight jet water flow in the front-back direction above the nozzle position for cleaning.

In addition, the nozzle mounting seat 16 has a nozzle 15a,
As shown in FIG. 4B, the nozzle 16a and the nozzle 16b, which are mounted at right angles to the nozzle 15b, are arranged such that the nozzle 16a facing left in the position of state A rotates the nozzle support arm 12 and reciprocates the nozzle mounting seat 16. By the movement, downward in the B state, rightward in the C state, downward of the D state, and returned to the left side of the A state, irradiating a continuous straight jet water flow that shifts to the left and right below the nozzle position to perform cleaning, At the same time, the nozzle 16b changes from rightward to upward and then leftward, and then upward and returns to rightward, during which time a straight jet water stream is emitted toward the left and right above the nozzle position for cleaning.

In the description of FIG. 4, since the nozzle mounting seats 15 and 16 repeat the reciprocating rotation of 90 ° twice for one rotation of the nozzle supporting arm 12, each nozzle of the nozzle supporting arm 12 rotates once. Although the directions are the same, the number of teeth of the internal gear 17 and the spur gear 19 is, for example, 60:
As shown in FIG. 5, the number of teeth is not an integral multiple, as shown in FIG. 13, and thus the trajectory of the nozzle 15a is biased to the locus AN1 of the first rotation and the locus AN2 of the second rotation as shown in FIG. Occurs, the injection position changes, and the rotation is repeated to clean the entire surface in the tank. BN1 is the trajectory of the first rotation of the nozzle 15b, BN2 is the trajectory of the second rotation, and the same applies to the nozzles 16a and 16b.

In this embodiment, since the nozzle mounting seats 15 and 16 are reciprocally rotated by the crank mechanism, the jet water flow of the nozzles 15a and 16a is directed downward, and the nozzles 15b and 1
Since the jet water flow of 6b moves upward, when it is necessary to radiate only downward from the nozzle position, the nozzles 15b and 16b may be closed.

It should be noted that the up / down, front / rear, left / right, etc. indications indicating the direction of the nozzles are for illustration purposes only.
It will be appreciated that the orientation will change if the is inserted laterally.

In the embodiment of FIG. 6, the same parts as those in FIG. 3 are designated by the same reference numerals, and the rotation axis of the nozzle support arm 12 is deviated from the rotation axes of the water guide pipe 5 and the rotation box 11 by a. , The mounting position of the operation shaft 22 to the nozzle support arm 12
It is provided at a position that matches the axis of the. Therefore, the axial center of the nozzle support arm 12 makes a circular motion with the rotation of the rotary box 11, the nozzle position swings, the emission range of the jet water flow becomes wider, and the cleaning effect increases.

FIG. 7 shows another embodiment, in which the transmission 20 for rotating the nozzle mounting seat is constituted by a crank mechanism and continuously rotated in one direction. Nozzle mounting seat 31 that passes through the inside of the nozzle support arm 30
At one end, four straight injection type nozzles 31 are provided at right angles.
a, 31b, 31c and not shown 31d,
The crank arm 32 provided at the other end is connected to the crank rod 3
3 and crank arm 34 to rotate box 11
Is connected to the operation shaft 22.

Therefore, when the nozzle mounting seat 31 rotates with the rotation of the nozzle support arm 30, each nozzle 31 is rotated.
As shown in FIG. 8, the injection directions of a, 31b, 31c, and 31d are changed from downward in the A state to forward in the B state, upward in the B state, upward in the C state, and forward in the D state. 31b, 31c and 31d also shift in their respective directions and radiate the jet water flow over the entire surface of the tank.

The transmission 20 in the embodiment of FIG.
Attaches a crank arm to the operation shaft 22 and continuously rotates the attachment seat to the nozzle via the crank mechanism.
Instead of the crank mechanism, a gear mechanism, a chain, or a belt can be used to continuously rotate the nozzle mounting seat.

FIG. 9 shows an embodiment in which a nozzle mounting seat is provided on both sides of the transmission 20 using gears, and the same parts as those in FIG. 2 are designated by the same reference numerals. Nozzle mounting seats 15 and 16 are rotatably mounted on both sides of a nozzle support arm 12 mounted on a rotating box 11 that rotates together with the water conduit 5, and driving gears 35 and 36 mounted on both ends of the operating shaft 22 are mounted on the nozzle mounting seat 15 respectively. , 16 are engaged with the driven gears 37, 38 fixed to the gears 16, 16 to form the transmission device 20.

Therefore, as the nozzle support arm 12 rotates, the nozzle mounting seats 15 and 16 rotate, and the nozzle 1
The injection directions of 5a, 15b and 16a, 16b are changed in a three-dimensional direction. By providing the nozzle mounting seats on both sides as in this embodiment, it is possible to eliminate the mechanical imbalance in the embodiment of FIG.
The rotation cycle of the nozzle can be selected by appropriately selecting the number of teeth of the gears 5, 36 and the driven gears 37, 38.

In the above embodiment, while the nozzle support arm 12 rotates 90 °, the nozzle mounting seat 15,
Although 16 or 31 is configured to reciprocally rotate or rotate at 90 °, it is not limited to this, and the rotation or rotation angle of the nozzle mounting seat for one rotation of the nozzle support arm 12 is also set to an arbitrary angle. can do. Further, although four nozzles are provided and the mutual mounting angle is 90 °, it is also possible to mount an appropriate number of nozzles on the nozzle mounting seat and change the mutual angle if necessary. However, in order to prevent the vibration of the nozzle mounting seat, it is desirable that the mounting angle of the nozzle is equally divided, and when reciprocatingly rotating, the rotating angle may be selected according to the nozzle angle.

[0031]

As described above, according to the present invention, the beam slidably supported by the column, the nozzle support arm rotating with the beam at the tip of the beam, and the nozzle support arm intersecting the axis of the nozzle support arm. A nozzle mounting seat that is rotatably mounted in a direction in which the nozzle mount seat is provided, and a plurality of straight jet nozzles that are mounted on the side surface of the nozzle mounting seat in a direction intersecting the axis are provided, and pressurized water is supplied to the nozzle. Since the nozzle support arm is rotated and the nozzle mounting seat is reciprocally rotated or continuously rotated at different cycles, the nozzle can be inserted through a small-diameter hole such as a peephole, and the nozzle can be sprayed inside the tank. The direction changes three-dimensionally, and it is possible to clean the entire inner surface of a tank or the like with a strong pressure with a small number of nozzles.

Therefore, it is not necessary for an operator to enter the inside, sufficient cleaning can be performed easily, quickly and safely, and even if there is a device such as a stirring blade inside, a strong water flow to the corner of the device or the container is achieved. Since it is a straight-ahead jet type water flow, there is an effect that the amount of water used is small and post-treatment is simple. It should be noted that the nozzle mounting seats are rotatably provided on both sides of the nozzle support arm, and the nozzles are provided at equal angles toward both sides of each nozzle mounting seat, so that the reaction force due to the jetting is offset and the vibration of the device is reduced. be able to.

Further, a rotary box which rotates together with the water guide tube is provided at the tip of the beam, and a drive shaft which rotates in mesh with the internal gear of the beam is provided in the rotary box, and a transmission device which rotates the operation shaft by the drive shaft. By rotating the nozzle mounting seat, the rotating structure of the nozzle can be configured with a simple mechanism, and since a motor etc. is not required for operating the nozzle, there is no failure due to water, maintenance is easy and durability A device with

Further, the transmission is composed of a crank mechanism,
If the nozzle mounting seat is reciprocally rotated, the injection direction can be moved to one side of the nozzle position according to the nozzle mounting direction, and cleaning of only one side is possible by simply closing the nozzle in the opposite direction. If the rotary transmission using a gear mechanism or the like is used as the transmission, the mechanism is simple and the number of rotations of the nozzle can be easily set and changed.

Further, if the rotation axis of the nozzle support arm is eccentric so that the rotation axis moves circularly, the nozzle position is swung and the injection position is changed, so that the cleaning effect can be increased. can get.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of a device of the present invention in a use state.

FIG. 2 is a side view of a nozzle portion, a part of which is a cross section.

FIG. 3 is a left side view of FIG.

FIG. 4 is an explanatory view showing the operation of the nozzle in the embodiment of the device of the present invention.

FIG. 5 is a diagram showing a trajectory of injection in the embodiment of the device of the present invention.

FIG. 6 is a view corresponding to FIG. 3 showing another embodiment.

FIG. 7 is a side view of a nozzle portion showing another embodiment.

FIG. 8 is an explanatory diagram showing the operation of the nozzle in the embodiment of FIG.

FIG. 9 is a view corresponding to FIG. 2 showing still another embodiment.

[Explanation of symbols]

 1 Beam 2 Support 3 Chain 4 Motor 5 Water Conduit 6 Gear 7 Motor 8 Hose 9 Tank to be Washed 10 Peep Hole 11 Rotating Box 12 Nozzle Support Arm 13 Water Supply Channel 14 Water Transmission Channel 15 and 16 Nozzle Mounting Seat 15a, 15b, 16a, 16b Nozzle 17 Internal gear 18 Drive shaft 19 Spur gear 20 Transmission device 21 Drive gear 22 Operation shaft 23 Helical gear 24, 25 Crank arm 26, 27 Crank rod 28, 29 Crank arm 30 Nozzle support arm 31 Nozzle mounting seat 31a, 31b, 31c, 31d Nozzle 32, 34 Crank arm 33 Crank rod 35, 36 Driving gear 37, 38 Driven gear

[Procedure amendment]

[Submission date] December 27, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

It should be noted that in FIG. 4, the up / down, front / rear, and left / right indications of the nozzle direction are indicated by the vertical direction of the nozzle support arm 12.
The nozzle support arm 12
The in the transverse direction when inserting from the right nozzle support ah
The direction of the nozzle with respect to the
It will be appreciated that nozzle 15a is up, with 15a in the front, B state .

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

Therefore, when the nozzle mounting seat 31 rotates with the rotation of the nozzle support arm 30, each nozzle 31 is rotated.
When the jetting directions of a, 31b, 31c, and 31d are the vertical directions of the nozzle support arm 12 as shown in FIG.
The direction of 1a is from downward in the A state to forward in the B state,
In the C state, the nozzles move upward and in the D state, the nozzles move forward, and the other nozzles 31b, 31c, 31d also move in their respective directions to radiate the jet water flow over the entire surface of the tank.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction content]

Further, a rotary box which rotates together with the water guide tube is provided at the tip of the beam, and a drive shaft which rotates in mesh with the internal gear of the beam is provided in the rotary box, and a transmission device which rotates the operation shaft by the drive shaft. By rotating the nozzle mounting seat, the rotating structure of the nozzle can be configured with a simple mechanism, and since a motor etc. is not required for nozzle operation, there is no failure due to water, maintenance is easy and durability A device with Incidentally, with the internal gear,
The number of teeth of the spur gear meshed with this is not an integer multiple
Movement of the nozzle support arm can be achieved by keeping the gear ratio.
And the rotation of the nozzle are not synchronized
Cleaning the entire surface of the tank in a short time.
You can

Claims (6)

[Claims] 1. A beam slidably supported on a column,
A nozzle support arm that rotates about the axis of the beam is provided at the tip of the beam, and a nozzle attachment seat that is attached to the nozzle support arm and is rotatable in a direction intersecting the axis of the nozzle support arm. Attached to the side surface of the seat in a direction intersecting the axis of the nozzle mounting seat, the nozzle equipped with a straight injection nozzle located outside the beam, supplying pressure water to the nozzle, and rotating the nozzle support arm, An internal cleaning device for a tank or the like, characterized in that the nozzle mounting seat is reciprocally rotated or rotated at different cycles. 2. A tank according to claim 1, wherein nozzle mounting seats are rotatably provided on both sides of the tip end portion of the nozzle support arm, and a plurality of straight injection nozzles are mounted on each nozzle mounting seat at equal angles. Internal cleaning equipment such as. 3. A beam slidably supported on the column,
A water guide pipe rotatably supported in the beam, a driving device for rotating the water guide pipe, a rotary box attached to the tip of the water guide pipe to rotate together with the water guide pipe, and a feed box in the rotary box attached integrally with the rotary box. A nozzle support arm connected to the water conduit via a water channel, and a nozzle mounting seat rotatably mounted on both sides of the nozzle support arm are provided.
The nozzle mounting seat is provided with a straight injection type nozzle located on the outer side of the mounting beam in a direction intersecting with the axis on the side surface of the nozzle mounting seat, and the rotating box is rotated by a spur gear meshing with an internal gear provided on the beam. A transmission device that reciprocally rotates or rotates the nozzle mounting seat by rotation of a shaft and a drive shaft, and supplies pressurized water to the nozzle,
An internal cleaning device for a tank or the like, characterized in that the nozzle support arm is rotated and the nozzle mounting seat is reciprocally rotated or rotated at different cycles via a transmission device. 4. The internal gear has a number of teeth that is not an integer multiple of the number of teeth of a spur gear, and the transmission is a crank mechanism driven by rotation of a drive shaft, and reciprocally rotates a nozzle mounting seat. Internal cleaning device for the tank, etc. described in 3. 5. The nozzle gear seat according to claim 3, wherein the internal gear has a number of teeth that is not an integral multiple of the number of teeth of the spur gear, and the transmission is a gear mechanism driven by rotation of the drive shaft to rotate the nozzle mounting seat. Internal cleaning equipment for tanks, etc. 6. The rotary shaft center of the nozzle support arm and the rotary shaft center of the water conduit are slightly deviated from each other so that the rotary shaft of the nozzle support arm makes a circular motion. 5. An internal cleaning device for a tank or the like according to any one of 5 above.