JPS632145Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a cleaning device that cleans containers such as tanks using the impact force of jetting high-pressure water. This invention relates to an improvement of a nozzle rotating type cleaning device that can be rotated to cover a wide range of cleaning objects.

(Technical background of the invention) Regardless of its type, a rotary nozzle device is constructed for the purpose of cleaning a wide area by continuously changing the direction of a high-pressure water jet nozzle. There is. Structurally, there are two types: those in which the nozzle is installed in the radial direction of the water supply pipe, and those in which the nozzle is installed in a direction perpendicular to the axis of the arm that extends in the radial direction of the water supply pipe. be done. Furthermore, there are two types: those in which the nozzle is rotated by the reaction force of high-pressure water jetted from the nozzle, and those in which the nozzle is rotated by a separate drive device. Each nozzle is effectively configured by a combination of the nozzle installation method and the drive method. As such a device, the special public
-23472, Jitsugyo 52-32625, USP3001534,
USP3416732 etc. are publicly known.

Generally, in a device in which an arm extends in the radial direction of the water supply pipe and a nozzle is installed in a direction perpendicular to the axis of the arm, the nozzle rotates around the axis of the arm. Furthermore, the arm rotates around the axis of the water supply pipe. That is, the nozzle is configured to rotate relative to the arm and revolve relative to the water supply pipe. and,
Many achieve this goal by using bevel gears placed concentrically with the respective axes of the water pipe and arm to generate rotational and orbital motion of the nozzle. In other words, in a type that is rotated by a separate drive device, when the bevel gear installed concentrically with the axis of the water supply pipe is rotated, the bevel gear installed concentrically with the axis of the arm rotates. The resulting arm rotates about its axis, causing the nozzle to rotate. At the same time, the arm pivots together with the water supply pipe about the axis of the water supply pipe. On the other hand, in the case where the nozzle rotates due to the jet reaction force, when the nozzle rotates around the axis of the arm due to the jet reaction force of high-pressure water, the bevel gear provided on the arm rotates, and as a result, the bevel gear is connected to the water supply pipe. It engages with a bevel gear fixed to and rotates around the water supply pipe.

(Problems with the prior art) Such cleaning devices are often used to clean the inner surfaces of containers such as tanks, and contaminants adhering to the inner surfaces of the containers are scattered with the cleaning water, causing damage to the cleaning device. collide with There is no problem if the contaminant is liquid, but if it is solid, the scattered solids adhere to the bevel gear and prevent the bevel gear from operating, making it impossible for the nozzle to rotate, resulting in high-pressure water Because the jet is sprayed concentratedly at a specific location, the container may be damaged or some portions may remain unwashed.
Therefore, it is extremely inconvenient for the operator to constantly check the rotational movement of the nozzle while working, and there are other problems such as the need to clean the uncleaned area again, which is extremely troublesome. Ta.

(Purpose of the invention) Therefore, by preventing foreign matter from getting caught in the bevel gear, which was the cause of inhibiting smooth operation in conventional devices, it was possible to ensure stable and smooth operation of the cleaning device. The purpose of this is to improve work efficiency and shorten work time, as well as to prevent damage to equipment.

(Structure of the invention) In order to achieve the above object, a second cleaning nozzle that opens toward the engaging portion of the bevel gear is provided, and the second cleaning nozzle is communicated with the water supply pipe and the injection nozzle. The second cleaning nozzle is arranged so as to always match the engaging portion of the bevel gear even if the position of the injection nozzle changes.

(Embodiments of the invention) Next, the invention will be described in more detail based on illustrated embodiments. Fig. 1, Fig. 2, and Fig. 3 show embodiments in which the present invention is applied to cleaning devices with different structures, respectively. FIG. 3 shows an example of a structure in which the nozzle automatically rotates by the reaction force of high-pressure water jetted from the nozzle.

First, in FIG. 1, reference numeral 1 denotes a fixed pipe, which is fixed to a base 2 and suspended in a tank 3. The base 2 is connected to a manhole flange 4 of the tank 3.
is fixed. Reference numeral 5 denotes a high-pressure water conduit, which is rotatably supported within the fixed pipe 1 by a bearing box 6 disposed at the upper part of the fixed pipe 1 and a bearing section 7 at the lower part. 1
A driven sprocket 8 is fixedly installed at a portion protruding from the upper part of the base 2, and a chain 12 is wound between the driven sprocket 8 and a drive sprocket 11 that is fixedly installed on a swing drive motor 10 provided on the base 2 via a motor bracket 9. . Reference numeral 13 denotes a rotary joint disposed at the upper end of the high-pressure water conduit 5, to which a high-pressure water hose 15 is connected via a high-pressure water valve 14. The nozzle portion will be described based on the longitudinal cross-sectional side view of FIG. A flange portion 16 is formed at the lower end of the fixed tube 1, and is engaged with a flange portion 17 formed on the bearing portion 7 and fixed with bolts 18. The flange portion 17 further has a drive bevel gear 1 at its lower end.
9 are integrally formed. The high-pressure water conduit 5 has a flange portion 20 formed at its lower end, which engages with a flange portion 24 formed at the upper end of a tubular shaft 23 supported by bearings 21 and 22 fitted in the bearing portion 7, and the bolt 25
It is integrally fixed by. Reference numeral 26 denotes a rotating member, which is fitted onto the tubular shaft 23 and which is connected to the key 2.
7 and fixed by a nut 28. The rotating member 26 has a rotating arm 29
protrudes in a direction perpendicular to the tubular shaft 23 and is locked therein, and a rotating member 31 formed with a driven bevel gear 30 that engages with the driving bevel gear 19 is rotatably fitted around the rotating member 26. I am wearing it. 32,3
Reference numeral 3 designates injection nozzles that are respectively locked to rotating members 31. 34 is a cleaning nozzle, which is connected to the tubular shaft 2.
3 and a water passage 36 provided on the swing arm 29 that communicates with the water passage 35 provided in the rotary arm 29, and opens toward the engagement portion 37 between the drive bevel gear 19 and the driven bevel gear 30. be.

In the device configured in this way, the base 2
When the swing drive motor 10 disposed via the motor bracket 9 is started, the drive sprocket 1
1. Drive the driven sprocket 8 via the chain 12, so that the high pressure water conduit 5 is rotated. At the same time, the high pressure valve 14 is opened and the high pressure water conduit 5 is passed from the high pressure hose 15 through the rotary joint 13.
Introduce high-pressure water to the Since the high-pressure water hose 15 and the high-pressure water conduit 5 are connected by the rotary joint 13, care is taken to prevent the high-pressure water hose 15 from rotating even when the high-pressure water conduit 5 is driven to rotate. The fixed pipe 1 is fixed to the base 2, and the base 2 is fixed to the tank 3 by the manhole flange 4, so that the high pressure water conduit 5
Even if the fixed tube 1 is rotated by the swing drive motor 10, the fixed tube 1 is not rotated together. The high-pressure water conduit 5 that has been driven to rotate integrally rotates a tubular shaft 23 that is connected together with bolts 25 through flanges 20 and 24 . At the same time, the pivoting member 26, which is prevented from rotating by the key 27, is also pivoted, so that the pivoting arm 29 protruding from the pivoting member 26 and its peripheral components pivot around the axis of the high-pressure water conduit 5 or the tubular shaft 23. It is something to do. At this time, the driven bevel gear 30 engaged with the driving bevel gear 19 formed integrally with the bearing part 7 and fixed to the fixed tube 1 with bolts 18.
rotates while changing the engagement position with the drive bevel gear 19. That is, the driven bevel gear 30 rotates around the axis of the swing arm 29 while meshing with the fixed driving bevel gear 19. In other words, it revolves around the tubular shaft 23 while rotating. The rotation of the driven bevel gear 30 means that the rotating member 3
It is clear from the figure that this is the rotation of the injection nozzles 32 and 33. At the same time as this movement, the high pressure water introduced into the high pressure water conduit 5 is supplied from the water passages 35, 36 through the through hole 38 sealed with a packing 39 to the injection nozzles 32, 33 and is ejected. In addition, some of the high pressure water is
5 or 36 to the cleaning nozzle 34 and is ejected, collides with the engaging portion 37 between the driving bevel gear 19 and the driven bevel gear 30 to clean the teeth. Strictly speaking, the driving bevel gear 19 and the driven bevel gear 30
The cleaning nozzle 34 at a position just before the engagement position with the cleaning nozzle 34
The streamlines of the cleaning nozzle 34 are engaged with each other, and the cleaning nozzle is configured such that foreign matter adhering to both bevel gears 19 and 30 is blown off by a high-pressure water jet from the cleaning nozzle 34 immediately before it is bitten by the teeth at the engaged position. It is effective to set 34 opening positions. Cleaning nozzle 34
is bored in the rotating member 26 as described above, so even if the driven bevel gear 30 revolves around the driving bevel gear 19, the engaging portion 3 of both bevel gears 19 and 30
7, the opening is always at a position under the same conditions, and therefore the optimum cleaning effect can always be achieved.

Next, a description will be given of an embodiment in which the present invention is applied to a device of the type shown in FIG. 3, which is rotated by the spray reaction force from the spray nozzles 32 and 33. In the drawings, the same numbers as in FIGS. 1 and 2 indicate the same parts or parts having the same function. In this embodiment, the high-pressure water conduit 5 is fixed to the rotation control unit 40, and is generally used by being fixed to a container such as a tank so as not to rotate. The tubular shaft 23 is rotatably supported with respect to the high-pressure water conduit 5 or the rotation control part 40, and the drive bevel gear 19 is fixed to the bearing part 7, and the bearing part 7 is fixed to the rotation control part 40, respectively. As shown in FIG. 4, the injection nozzles 32 and 33 are disposed opposite to the center of rotation of the rotating member 31 with an eccentric amount e. The high-pressure water introduced from the high-pressure water conduit 5 passes through the water passage 35 of the tubular shaft 23, the water passage 36 of the swing arm 29, and is ejected from the injection nozzles 32, 33. The injection nozzles 32 and 33 receive a reaction force from the high-pressure water that is ejected at this time, but since the injection nozzles 32 and 33 are disposed opposite each other with an eccentric amount of e, the reaction force is applied to the rotating member 3.
As a result, the driven bevel gear 30, the rotating member 31, the injection nozzles 32, 3
3 rotate together around the pivot arm 29. Then, the driven bevel gear 30 engaged with the driving bevel gear 19 which is fixed so as not to rotate.
rotates around the pivot arm 29 while engaging with the drive bevel gear 19 and pivoting around the tubular shaft 23 . That is, the driven bevel gear 30 revolves while rotating. Therefore, the injection nozzles 32 and 33 also rotate around the rotating arm 29 and revolve around the tubular shaft 23 while jetting high-pressure water. Cleaning nozzle 34
As in the first embodiment, the engagement portion 3 between the driving bevel gear 19 and the driven bevel gear 30 is always
7. Preferably, the cleaning nozzle 34 is opened at a position immediately before the engaging portion 37 engages, and is sprayed from the cleaning nozzle 34 to remove foreign matter attached to both the bevel gears 19 and 30 immediately before the bevel gears 19 and 30 engage. By cleaning the tooth surface by blowing it away with high-pressure water, the tooth surface can always be kept clean.

(Effects of the invention) As described in detail above, according to the invention, when cleaning containers such as tanks using a rotating nozzle device, deposits peeled off from the containers are not scattered. some of it adheres to the nozzle device,
To prevent foreign objects from getting caught in gears and causing operational problems, high-pressure water is jetted toward the tooth surface of the gear at the engaging portion of the gear, preferably at a position immediately before the engaging portion of the gear, to clean and remove foreign matter. By doing so, the gears are always engaged in a clean state, making it possible to completely prevent operational failures. As a result, there is no uneven cleaning or damage to containers, and extremely efficient cleaning can be achieved.

[Brief explanation of the drawing]

Fig. 1 is an external view of an embodiment of the present invention, Fig. 2 is an enlarged vertical sectional side view of the main part of the embodiment shown in Fig. 1, Fig. 3 is a vertical sectional side view of another embodiment, and Fig. 4 is a vertical sectional side view of another embodiment. It is a XX sectional view of the figure. 3... Tank, 5... High pressure water conduit, 19... Driven bevel gear, 23... Tubular shaft, 29... Swivel arm, 30... Driven bevel gear, 31... Rotating member, 3
2... Injection nozzle, 33... Injection nozzle, 34...
...Washing nozzle, 35... Water passage, 36... Water passage, 37... Engagement portion.

Claims (1)

[Scope of utility model registration request] In a cleaning device having a bevel gear disposed concentrically with a high-pressure water conduit, and an injection nozzle that rotates integrally with another bevel gear engaged with the bevel gear, An automatic cleaning device for tanks, etc., which is equipped with a cleaning nozzle that opens toward an engaging part, and which is communicated with a high-pressure water flow path from a high-pressure water conduit to an injection nozzle.