JPS6260146B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaning device that uses high-pressure water jetting.

Cleaning equipment that mainly uses high-pressure water to clean the inside of chemical plants, food tanks, brewing and fermentation tanks, etc. generally uses a nozzle that sprays high-pressure water while rotating the nozzle housing to spray water inside the tank. It is designed to spray high-pressure water uniformly.

In this case, the rotational force of both the housing and the nozzle conventionally utilizes high-pressure water supplied to both. For example, the housing is rotated by an impeller in the internal passage, and the nozzle is rotated in a direction opposite to the injection direction due to the reaction of the injection pressure of high-pressure water.

Therefore, the injection force from the nozzle is reduced by the rotational force of the housing and the absorption of the reactionary rotational force at the nozzle, and the nozzle must be rotated approximately 90° to obtain the rotational reaction force.
Due to the bending angle, the amount of water injected was scattered, making it difficult to perform focused injection. In addition, since the rotational speed of the housing and nozzle is proportional to the amount of high-pressure water supplied, it is not possible to perform segmental operations such as increasing or decreasing only the injection pressure from the nozzle while maintaining the rotation of both at a constant rotation suitable for cleaning. However, there was a problem that the scope of its use was limited.

In order to solve this problem, if a damper or the like is installed inside the housing to maintain a constant rotational force, the device becomes larger and more complicated, resulting in higher costs.
Moreover, there was the problem that it could not be used for food-related cleaning due to oil leakage from the damper.

This invention was made to solve these problems, and by rotating the housing and nozzle using high-pressure water that is different from the water jetted from the nozzle, it is possible to rotate the housing and nozzle independently of the jetting pressure of the nozzle. The purpose of the present invention is to provide a washing device that allows rotation speed control.

The present invention will be explained below based on the drawings.

First, to explain the configuration, a fixed shaft 1 is disposed at the center of the device, and a water supply hole 1a is provided in the core of the device up to near the tip. The diameter of the fixed shaft 1 near the end of the water supply hole 1a is reduced in a stepped manner, and at this position a fixed platen 9 having a bevel gear portion 9a on the upper surface of the outer periphery is fixed by tightening a nut 13 to the threaded portion 1e. There is.

In this case, a passage pipe 10 that communicates with the water supply hole 1a of the fixed platen 9 and serves as a dedicated passage for high-pressure water has a threaded hole 1d.
is screwed into. In addition, a rotating shaft 4 having a pinion-shaped gear portion 4a is mounted on a bearing 17 on the fixed plate 9.
A spur gear 3 is integrally attached to the lower end of a rotary shaft 4 which is rotatably supported via a fixed platen 9 and protrudes below the stationary platen 9 by means of a cap screw 15.

An impeller 2 equipped with a bearing 18 is rotatably supported at the small-diameter tip of the rotating shaft 1 with its outer periphery covered by a fixed cover 19. Note that it is prevented from coming off by a bolt 14 fitted into the screw hole 1f. In this case, the gear portion 2a formed on the impeller 2 meshes with the spur gear 3. Further, a nozzle housing 11 having a high-pressure water injection port 12 is attached to a part of the fixed cover 19, and the passage pipe 10 is connected to this housing 11. A needle 12a is inserted into the injection port 12 so that the amount of high-pressure water sprayed onto the impeller 2 can be adjusted by operating an external bolt 12b.

An annular groove 1b is provided on the outer periphery of the large diameter portion of the fixed shaft 1, and this annular groove 1b communicates with the water supply hole 1a via a passage 1c, and serves as a dedicated passage for high-pressure cleaning water.

At the same time, a housing 5 is rotatably fitted onto the fixed shaft 1. A gear portion 5a that meshes with the gear portion 4a of the rotating shaft 4 is provided on the outer peripheral surface of the housing 5.
is provided so that the housing 5 rotates as the impeller 2 rotates. Note that the housing 5 has a thrust bearing 16 arranged between it and the fixed platen 9.
is rotatably supported by the fixed shaft 1.
It is held watertight by a back-up spring 21 disposed with an annular groove 1b sandwiched therebetween.

A rotating shaft 6 of a model rotating sleeve 7 is inserted into a screw hole 5b communicating with the annular groove 1b of the rotating housing 5. This rotating shaft 6 has a passage 6a at its axial center, and a passage 6b extending in the radial direction is formed in the passage 6a. Note that a watertight back-up spring 21 is installed between the outer circumferential surface and the inner circumferential surface of the rotary sleeve 7 in the same manner as described above.

A bevel gear part 7a is provided at the base end of the outer periphery of the model rotating sleeve 7, and by meshing this bevel gear part 7a with the bevel gear part 9a of the fixed plate, the model rotates as the vertical rotating housing 5 rotates about the fixed shaft 1. The rotating sleeve 7 is designed to roll around the outer periphery of the stationary platen 9. In this case, the sleeve 7 is held by a washer 20 fitted onto the shaft end. Further, two nozzles 8A and 8B are inserted into the threaded hole 7b of the model rotating sleeve 7 and communicate with the passages 6a and 6b to spray high-pressure water for cleaning.

Note that 1g in FIG. 2 is a notch for fixedly maintaining the connection state when the threaded portion 1h is screwed into the water supply pipe that supplies high-pressure water to the fixed shaft 1.

Next, the effect will be explained.

When the threaded portion 1h of the fixed shaft 1 is connected to a high-pressure water supply pipe (not shown) to supply high-pressure water to the cleaning device, a portion of the high-pressure water that has entered the water supply hole 1a enters the annular groove 1b from the passage 1c. The liquid is injected to the outside from two nozzles 8A and 8B through passages 6a and 6b of the rotating shaft 6.

Further, the high-pressure water that has reached the bottom of the water supply hole 1a is injected toward the impeller 2 from the injection port 12 of the housing 11 via the passage pipe 10.

When the impeller 2 rotates due to this injection, the spur gear 3 meshing with the gear portion 2a rotates and drives the rotating shaft 4. Therefore, the vertical rotary housing 5 meshing with the gear part 4a rotates in a predetermined direction, but the model rotary sleeve 7 fitted on the rotary shaft 6 integral with the housing 5 is rotated by the bevel gear part of the stationary platen 9. 9a, it moves in the same direction as the vertical rotary housing 5 while rolling and rotating (rotating).

Therefore, the high-pressure water jetted from the nozzles 8A and 8B inserted into the horizontal rotary sleeve 7 hits the horizontal rotary sleeve 7 at all 360-degree circumferential positions in the plane direction corresponding to the rotational direction of the vertical rotary housing 5. Since it can reach the entire 360-degree circumference in the vertical direction, which corresponds to the rolling direction, high-pressure water can be distributed uniformly and focused over the entire surface of spherical tanks in chemical plants, etc., and cylindrical tanks in food-related tanks, etc. It can be sprayed on for complete cleaning.

The high-pressure water injected for cleaning at this time does not need to take into account the rotational driving force of the device, so it can be set at a predetermined pressure so as to obtain a focused jetted water flow without scattering.

In other words, the high-pressure water that drives the device flows through the passage pipe 1.
Since the jet is exclusively injected from the jet port 12 to the impeller 2 after passing through the jet 0, the jet pressure can be selected separately from the jet pressure of the cleaning high-pressure water by adjusting the needle 12a. It can be driven with.

Furthermore, in terms of the device configuration, each transmission part has a simple structure and is easy to manufacture, which reduces costs.Due to the selection of materials, each transmission part does not require lubrication, so it is suitable for food-related applications as well as It can also be used to clean areas that reject other oils.

As explained above, in this invention, the driving force for rotating the housing and the nozzle is obtained by using high-pressure water that is different from the jetting reaction force from the nozzle. While maintaining this state, the driving speed of the device can be freely controlled depending on the purpose.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing the configuration of the washing device according to the present invention, Fig. 2 is a plan view of the fixed shaft that is the main part of the device, and Fig. 3 is a bottom view showing the device partially in cross section. It is a diagram. 1...Fixed shaft, 1a...Water supply hole, 1c...Washing high pressure water dedicated passage, 1d...Device driving high pressure water exclusive passage, 2...
Impeller, 3... Spur gear, 4... Rotating shaft, 5... Vertical rotating housing, 6... Rotating shaft, 7... Horizontal rotating sleeve, 8A, 8B... Cleaning high pressure water injection nozzle, 9... Fixed plate, 12... High pressure water injection port.

Claims (1)

[Claims] 1 A fixed plate with a bevel gear concentrically mounted on a fixed shaft to which a water supply pipe is connected to the upper part, an impeller rotatably supported on the fixed shaft, and a water supply hole communicating with the water supply pipe on the fixed shaft. , a fixed shaft is provided with an injection port that injects high-pressure water to the impeller through a passage branching from the water supply hole, a means for adjusting the injection amount is attached to the injection port, and a rotating housing is coaxially attached to the fixed shaft. A rotary shaft is mounted on a stationary plate and has a large gear formed concentrically on the rotating housing, a small gear formed concentrically on the impeller, and gears at both ends that mesh with the large gear and small gear, respectively. A rotary sleeve is supported on a rotary shaft extending perpendicular to the center of rotation of the rotary housing, and a rotary sleeve is formed on the rotary sleeve. While meshing the bevel gear with the bevel gear of the fixed plate,
A washing device characterized in that a high-pressure water injection nozzle extending in a direction perpendicular to the rotation axis is attached to the rotating sleeve, and a passage for guiding high-pressure water from the water supply hole is formed in the nozzle.