JPH10277510A - Elevating/lowering type cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an injection pattern to be regulated in accordance with the shape of the inside of a tank or the like to raise cleaning efficiency by reducing uselessness of high-pressure water in an elevating/lowering type cleaning device in which the inside of the tank or the like is automatically cleaned and treated by injection of high-pressure water. SOLUTION: The elevating/lowering type cleaning device is provided with a swing nozzle in the tip part of a rotary tube 10 penetrating the inside of an elevating/ lowering cylinder 3 in the axial direction and equipped with elevating/lowering mechanisms 6b, 7 moving the elevating/lowering cylinder 3 in the vertical direction by normal and reversal rotation of a motor 4 and with rotary mechanisms 14a-14c driving the rotary tube 10 by rotation of a motor 13. A sliding shaft 11 is supported so that the center of the rotary tube 10 is moved in the vertical direction. A rack extended in the axial direction is formed in the tip part projected from the rotary tube 10 to the lower part. A pinion engaged with the rack is formed on a circumference around the swing axis of the swing nozzle. Motion mechanisms 31, 32 for converting rotary motion of a motor 35 into rectilinear reciprocating motion are relatively freely rotatably joined to the tip projected from the rotary tube 10 of the sliding shaft 11 to the upper part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting type cleaning apparatus for cleaning the inside of various closed spaces such as food tanks, chemical tanks, reaction vessels, etc. by spraying high-pressure water.

[0002]

2. Description of the Related Art As a device for automatically cleaning an internal space such as a food tank, a chemical tank, and a reaction kettle, there has been known a device in which a high-pressure water injection nozzle rises and lowers while rotating in a three-dimensional direction. ing.

[0003]

However, in these conventional devices, the injection nozzle always rotates in a three-dimensional direction, and the injection trajectory of high-pressure water (wash water) has a constant pattern. Depending on the shape and the elevating position, the injection trajectory is not always appropriate, and there has been a problem that efficient cleaning cannot be performed.

For example, in the case where a cylindrical tank has upper and lower spheres that bulge outward, injection of high-pressure water in three-dimensional directions is effective for cleaning the upper and lower parts. Regarding the cylindrical portion, a sufficient cleaning effect can be obtained only by moving the high pressure water injection nozzle up and down while rotating horizontally. Nevertheless, if the injection nozzle always rotates in the three-dimensional direction, the amount of the injection in the vertical direction is often wasted, and the cleaning efficiency is reduced.

The present invention has been made in view of such problems, and an object of the present invention is to provide an elevating type cleaning apparatus in which the rotation direction of an injection nozzle can be adjusted.

[0006]

According to the first aspect of the present invention, a swing nozzle is provided at the tip of a rotary tube which penetrates the inside of the lift cylinder in the axial direction, and the lift cylinder is moved up and down by forward and reverse rotation of a motor. A lifting mechanism that drives the rotating tube by rotating the motor, and a rotating shaft that penetrates the center of the rotating tube so as to be movable up and down, and a tip protruding downward from the rotating tube. A rack extending in the axial direction is provided in the portion, and a pinion that meshes with the rack is formed on a circumference around the swing axis of the swing nozzle, and the rotational movement of the motor is linearly moved to the tip protruding upward from the rotating tube of the slide shaft. A mechanism for converting the reciprocating motion into a relatively reciprocating motion is connected rotatably.

According to a second aspect of the present invention, as the mechanism for converting the rotational motion of the motor into a linear reciprocating motion according to the first aspect, a traverse cam provided with an endless groove continuous on the inner periphery of a cylindrical body and an endless groove are provided. And a driven shaft that is movable in the axial direction inside the cylindrical body while being guided through the engaging projection.

[0008]

According to the present invention, three axes (elevation, rotation, rotation,
High-pressure water (cleaning water) is sprayed to the nozzle with the operation of (up). At this time, the slide shaft receives an operation of a mechanism that converts the rotational motion of the motor into a linear reciprocating motion, and moves the center of the rotary tube in the vertical direction. When the slide shaft reciprocates in the vertical direction, the swing nozzle 21 rotates vertically through a predetermined angle range about the swing axis via the rack and the pinion.

Since the lifting cylinder and the rotary tube each have a motor as a driving means, by individually turning these motors on and off, the injection trajectory of the high-pressure water can be adjusted as required. For example, when the internal shape of the tank or the like is simple, when the motor that drives the slide shaft is stopped, the vertical movement of the slide shaft is also stopped at that position.
The high-pressure water is injected with a two-axis operation of ascending and descending while rotating horizontally.

[0010] With respect to the raising and lowering operation of the swing nozzle, the control system can be simplified because the motor does not need to be rotated forward and backward to reciprocate the swing axis.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 to 3, reference numeral 1 denotes a gantry of a cleaning apparatus, and a lifting cylinder 3 is slidably supported on a bearing 2 thereof. As an elevating mechanism for moving the elevating cylinder 3 in the vertical direction by the rotation of the motor 4, a frame 5 is erected on the gantry 1 in parallel with the elevating cylinder 3, and sprockets 6a and 6b are provided on the upper and lower parts thereof. A chain 7 is provided between the sprockets 6a and 6b.
And the upper part of the lifting cylinder 3 is connected to a part of the chain 7 via the connecting portion 8.

When the sprocket 6b is rotated by the drive of the motor 4, the chain 7 is rotated, and the lifting cylinder 3 moves up and down integrally therewith. The gantry 1 is attached to the tank, and the bearing 2 of the lifting cylinder 3 is sealed so that high-pressure water (washing water) inside the tank does not leak out. Further, the movement of the elevating cylinder 3 is supported at two points in the bearing portion 2 and the connecting portion 8 with the chain 7.

A rotary tube 10 is provided which passes through the inside of the lifting cylinder 3 in the axial direction.
Is provided with a slide shaft 11 penetrating through the center. A mounting base 12 is provided on an upper side of the elevating cylinder 3, and a motor 13 is disposed thereon.

The rotation of the rotating tube 10
A large-diameter gear 14a is provided on the outer periphery of the tip end of the rotating tube 10 that protrudes upward from the lifting cylinder.
A small-diameter gear 14b meshing with the gear 14a via the medium-diameter gear 14c is formed on the rotation shaft of the motor 13, and these gears 14a to 14c reduce the rotation of the motor 14 and transmit the rotation to the rotary tube 10.

The rotary tube 10 is rotatably supported by the upper and lower portions of the lifting cylinder 3 via bearings 15a to 15c, respectively, and rotates the center of the bearings 15a to 15c when receiving the rotation of the motor 13. An injection unit 17 is attached via a base 16 to a tip 10 a of the rotating tube 10 protruding downward from the lifting cylinder 3.

As shown in FIGS. 4 and 5, the injection portion 17 has a swing shaft 20 as a center on both sides of a tip portion 11a which penetrates through the base 16 from the rotary tube 10 of the slide shaft 11 and projects downward. A swing nozzle 21 that can freely rotate in the vertical direction is provided.

1 facing the base 16 at a predetermined interval
A pair of stays 22 project downward, and the swing shaft 20 is attached to these stays 22. A housing 24 of the swing nozzle 21 is rotatably supported on the outer periphery of the swing shaft 20 via a bearing 23, and a pinion 26 that meshes with a rack 25 described later is formed on the outer periphery of the nozzle housing 24.

Racks 25 are provided on both sides of the distal end 11a of the slide shaft 11 so as to extend in the axial direction.
When 1 reciprocates vertically, the rack 25, the pinion 2
6, the swing nozzle 21 rotates vertically around a swing axis 20 within a predetermined angle range. The swing nozzles 21 are symmetrically arranged on both sides of the rack 25, and perform an elevating operation in synchronization with the swing axis 20 as a center. 2
2a represents a connecting rod between the stays.

The slide shaft 11 has bearings 28a (FIG.
), And are slidably supported via 28b. Since the inside of the rotating tube 10 serves as a high-pressure water channel, the slide shaft 11 is sealed with the rotating tube 10. In FIG. 3, a driven shaft 32 of a traverse cam 31 is rotatably connected to a distal end projecting upward from the rotary tube 10 via a rotary joint 30.

A frame 33 is provided above the lifting cylinder 3.
The traverse cam 31 is assembled into first and second stages 33a and 33b.
Are rotatably supported via bearings. The driven shaft 32 penetrates the first stage 33a so that it can move freely in the vertical direction. A large-diameter gear 34a is formed on the outer periphery of the tip end of the traverse cam 31 projecting the third stage 33c upward, and a motor 35 having a small-diameter gear 34b meshing with the gear 34a on a rotating shaft is used as a fourth stage 33d. Mounted on top.

The traverse cam 31 has an endless groove 31b continuous with the inner periphery of the cylindrical body 31a.
When the traverse cam 31 rotates via the reduction gears 34a and 34b by the driving of the motor 35, the endless groove 31
b while being guided through a projection (not shown)
The driven shaft 32 moves inside the cylindrical body 31a in the axial direction.
That is, the traverse cam 31 and its driven shaft 32 constitute a transmission mechanism that converts the rotational movement of the motor 35 into a reciprocating movement to the slide shaft 11.

A high-pressure hose 69 is connected to the upper side surface of the lifting cylinder 3 via a swivel joint 68 (FIG. 2).
reference). In order to supply the high-pressure water to the inside of the rotating tube 11, a water guide ring 40 is interposed between the lifting cylinder 3 and the rotating tube 11. As shown in FIG. 3, the high-pressure water enters through the through hole 41 of the elevating cylinder 3 into the annular groove 42 on the inner periphery thereof, and further flows through the through hole 43 of the water guide ring 40 through the annular groove 44 and through the through hole 45 of the rotating tube 11. Guided inside.

In order to supply high-pressure water from the rotary tube 11 to the swing nozzle 21, communication paths 47 and 48 connecting the inside of the rotary tube 11 and the hollow portion 20 a of the swing shaft 20 as shown in FIGS. The stay 22 is formed. A through hole 20 b is opened in the center portion 20 a of the swing shaft 20, and a water guide ring 50 is interposed between the nozzle housing 24 and the swing shaft 20.

The high-pressure water flows from the inside of the swing shaft 20 through the through hole 2.
Ob flows into the annular groove 51 of the water guide ring 50, and is guided from the passage 52 opening to the annular groove 51 to the nozzle at the tip of the nozzle through the annular groove 53 and the inlet 54 of the nozzle housing 24. Also in these water channel configurations, a seal ring is interposed at a necessary portion of the passage in order to suppress high pressure water leakage.

The gantry 1 is attached to a tank to be cleaned. When the injection nozzle portion 17 is at the raised position, a storage box 60 surrounding the periphery thereof is provided on the lower surface of the gantry 1 via the flexible tube 61, and the lower end thereof is inserted into the insertion port 70a of the tank 70 as shown in FIG. Gate valve 72
Are connected via.

The injection unit 17 is connected to the tank 7 through a gate valve 72.
0 and is inserted according to the internal shape of the tank 70.
High-pressure water is injected by a combination of axes (elevation, turning, and elevation). A controller (not shown) is provided to control these movements. 1 in FIG.
7 is a rotary encoder that tracks the ascending / descending position (stroke) from the rotation of the motor, and 63a and 63b represent an upper limit switch and a lower limit switch for restricting the elevation of the injection unit 17.

Inside the tank, the motors 4, 13,
When the 35 is driven, the high-pressure water from outside is sprayed in three axes (elevation, swivel, and elevating) by the movement of the lifting cylinder 3, the movement of the rotating tube 10, and the movement of the swing nozzle 21. In this case, since each of the elevating cylinder 3, the rotating tube 11, and the swing nozzle 21 includes the motors 4, 13, and 35 as driving means, when these are individually turned on and off, the injection trajectory (injection direction) of the high-pressure water is required. Can be adjusted according to

In the cylindrical tank 70 as shown in FIG. 6, high-pressure water is sprayed in three-dimensional directions by a triaxial operation for cleaning the upper part 70a and the lower part 70b having a spherical surface bulging outward, and a straight cylinder in the middle. With respect to the portion 70c, the motor 35 for driving the slide shaft 11 is stopped at the horizontal position of the swing nozzle 21, and is jetted by the movement of the rotating tube 11 and the movement of the lifting / lowering cylinder 3 with a two-axis operation of moving up and down while rotating horizontally. By doing so, the washing water is less likely to be wasted, and the washing efficiency of the tank 70 and the like can be increased.

With respect to the raising / lowering operation of the swing nozzle 21, the traverse cam 31 is employed, so that the swing shaft 11 is moved.
It is not necessary to rotate the motor 35 forward and backward to reciprocate the motor, so that the configuration of the control system can be simplified. In FIG. 6, reference numeral 71 denotes a part of the stirring device (rotating shaft and stirring blade) provided in the tank 70,
Reference numerals 73 and 74 in FIG. 1 denote a pressure gauge and a safety valve in a passage for releasing the internal pressure of the tank 70.

[Brief description of the drawings]

FIG. 1 is a sectional view of a lower half of an embodiment of the present invention as viewed from the front.

FIG. 2 is a cross-sectional view of a lower half portion similarly viewed from the side.

FIG. 3 is a cross-sectional view of the upper half.

FIG. 4 is a sectional view of the injection unit.

FIG. 5 is a sectional view taken along line AA of FIG.

FIG. 6 is an explanatory diagram of a cleaning process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stand 3 Elevating cylinder 4,13,35 Motor 6a, 6b Sprocket 7 Chain 8 Connection part 10 Rotating tube 11 Slide shaft 16 Base 17 Injection part 20 Swing axis 21 Swing nozzle 22 Stay 24,40 Water guide ring 25 Rack 26 Pinion 30 Rotary Joint 31 Traverse cam 32 Follower shaft

Claims (2)

[Claims] A lift nozzle is provided at the tip of a rotary tube that penetrates the lift cylinder in the axial direction, and a lift mechanism that moves the lift cylinder up and down by forward and reverse rotation of a motor; While having a rotating mechanism to drive the tube, while supporting the slide shaft movably in the up and down direction through the center of the rotating tube, provided a rack extending in the axial direction at the tip protruding downward from the rotating tube, A pinion that meshes with the rack is formed on the circumference around the swing axis of the swing nozzle, and a mechanism that converts the rotational motion of the motor into linear reciprocating motion at the tip protruding upward from the rotating tube of the slide shaft is relatively rotated. An elevating type washing apparatus characterized by being freely connected. 2. A mechanism for converting the rotational motion of the motor into a linear reciprocating motion is guided by a traverse cam having an endless groove continuous with the inner periphery of the cylindrical body and a projection engaged with the endless groove. 2. The lift type washing apparatus according to claim 1, further comprising a driven shaft movable in the axial direction inside the cylindrical body.