JPH09253593A - Washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing device of a small sized and inexpensive capable of obtaining high washing effect. SOLUTION: A flow straightening plate 3 is provided on the lower part of the inside of a washing tank 1. A washing liquid 6 flows against solid particles 5 filled in the upper part of the flow straightening plate 3 from the lower part to the upper part. Thus, a solid-liquid fluidizing layer 4 is formed between the solid particles 5 and the washing liquid 6 and an object A to be washed is washed with large impulse force of the solid particles 5 and shear force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the cleaning of processing oil and the like adhering to the surfaces of machine parts, etc.
The present invention relates to a cleaning device that uses an aqueous cleaning agent instead of a cleaning device that uses trichloroethane.

[0002]

2. Description of the Related Art Conventionally, as a principle used in a cleaning apparatus using a water-based cleaning agent, a method of spraying a water stream from a nozzle and applying it to an object to be cleaned in the air (water injection nozzle method) or a method of applying bubbles in water (Air bubbling method), Water jet method in water (Water jet method), Ultrasonic wave in water (Ultrasonic method), Object to be rotated or moved up and down in water (Rotation / Shake) Is known.

[0003]

In the conventional cleaning device,
In order to obtain a high cleaning effect, it is necessary to combine the above principles and the like, and there is a problem that the cleaning device becomes large and expensive.

An object of the present invention is to provide a cleaning apparatus which is small in size, inexpensive, and has a high cleaning effect by utilizing the movement of solid particles in a solid-liquid fluidized bed for cleaning.

[0005]

In the cleaning apparatus according to the present invention, a straightening vane is provided in the lower part of the washing tank, and the washing liquid flowing from the bottom to the top is flowed to the solid particles filled above the straightening vane. In addition, a solid-liquid fluidized bed of solid particles and a cleaning liquid is formed.

As the solid particles, river sand, glass balls, etc. are used. The diameter of solid particles (representative diameter of non-sphere particles) is about 1 mm to about 5 mm, and the most suitable one is selected according to the finished surface performance of the object to be cleaned.

The cleaning liquid contains clean water, pure water and an aqueous cleaning agent.

The solid-liquid fluidized bed is obtained by causing a cleaning liquid to flow from the bottom to the top of the solid particles filled above the flow straightening plate and adjusting the flow rate thereof.

In the solid-liquid fluidized bed, in addition to the upward flow of the cleaning liquid, the solid particles move freely in the up / down, front / rear, and left / right directions. The large impact force and shearing force wash off the processing oil and the like attached to the object to be cleaned.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram showing the cleaning apparatus of the present invention. The cleaning tank (1) is a cylindrical or square tube, and the cleaning liquid (6) is directed from the bottom to the top in the cleaning tank (1). And a cleaning liquid circulating device (2) for flowing the liquid.

A straightening vane (3) is provided below the washing tank (1), and a solid-liquid flow of solid particles (5) and washing liquid (6) is placed above the straightening vane (3). Layer (4) is formed.

As the current plate (3), there is used a wire net that is reinforced immediately below with a punching metal or the like.

The solid-liquid fluidized bed (4) is obtained by flowing a washing liquid (6) at a predetermined flow rate from bottom to top through a layer of solid particles (5) packed above the flow straightening plate (3). To be In the solid-liquid fluidized bed (4), in addition to the upward flow of the cleaning liquid (6), the solid particles (5) move freely up and down, front and back, and left and right.

As the solid particles (5), river sand, glass spheres, etc. are used, and the diameter (representative diameter of non-spheres) is about 1 mm to about 5 mm.

The cleaning liquid circulation device (2) comprises a pump (7) and a cleaning liquid introducing pipe (8) from the pump (7) to the bottom of the cleaning tank (1).
And a cleaning liquid discharge pipe (9) extending from above the cleaning tank (1) to the pump (7), and an oil-water separator (10) provided in the middle of the cleaning liquid discharge pipe (9).

The upper portion of the washing tank (1) is enlarged from the lower portion, and the enlarged portion (1a) is provided with a discharge port (11) for overflowing the washing liquid (6). Cleaning tank
In the enlarged portion (1a) of (1), the flow rate of the cleaning liquid (6) decreased and the solid particles (5) stopped following the upward flow of the cleaning liquid (6). Only (6) can overflow.

When the object to be cleaned (A) having oil adhered to its surface is immersed in the solid-liquid fluidized bed (4), the object to be cleaned (A) is washed by the rising cleaning liquid (6) and solids particle
When (5) comes into contact with the surface of the object to be cleaned (A), its impact force and shearing force destroy the surface oil film and oil droplets,
The object to be cleaned (A) is cleaned. Since the impact force and the shear force of the solid particles (5) are much larger than the impact force and the shear force of fluids such as water and air, the cleaning effect is greatly enhanced.

As the cleaning liquid circulation device (2), the one used in the conventional water-based cleaning device can be used as it is. Therefore, the cleaning device itself is inexpensive and small, and exhibits a high cleaning effect due to the effect of the solid particles (5). Such a cleaning device can be manually operated and is optimal for rough cleaning.

[0020]

According to the cleaning apparatus of the present invention, not only the cleaning liquid but also solid particles collide with the object to be cleaned, and the large impact force and shearing force wash off the processing oil and the like adhering to the object to be cleaned. Therefore, a high cleaning effect can be obtained without increasing the size of the device.

[Brief description of drawings]

FIG. 1 is a schematic view schematically showing a cleaning device according to the present invention.

[Explanation of symbols]

 (1) Cleaning tank (3) Current plate (4) Solid-liquid fluidized bed (5) Solid particles (6) Cleaning liquid

Claims (1)

[Claims] 1. A solid particle filled in an upper part of the current plate (3), which is provided with a current plate (3) below the cleaning tank (1).
A cleaning device characterized in that a cleaning liquid (6) is flown from the bottom to the top of (5) to form a solid-liquid fluidized bed (4) of solid particles (5) and the cleaning liquid (6).