JPH0760208A - Washing apparatus - Google Patents

Abstract

PURPOSE:To wash an article to be washed by spraying strong jet streams on the surface of the article to be washed without rotating nozzles within a washing tank and weakening the jet streams by the mutual interference of the jet streams of the washing soln. ejected from the respective nozzles when the jet streams of the washing soln. are sprayed on the surface of the article to be washed immersed in the washing soln. within the washing tank from the nozzles. CONSTITUTION:Pipings 4A-4D individually supplying a washing soln. are formed to respective nozzles 1, 1... arranged in positional relation wherein the jet streams of the washing soln. ejected toward an article W to be washed interfere mutually and valves 5A-5D are arranged to the pipings 4A-4D so as to open and close the pipelines thereof and a timing device alternately opening and closing the valves 5A-5D at a definite time interval is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning apparatus in which a nozzle for spraying a jet of the cleaning liquid on the surface of an object to be cleaned, which is immersed in the cleaning liquid in the cleaning tank, is arranged in the cleaning tank.

[0002]

2. Description of the Related Art For example, after a heat treatment such as a quenching treatment or a tempering treatment in a heat treatment furnace, in a cleaning tank in which a cleaning liquid made of an alkaline solution is stored in order to wash off oil and dust adhering to the surface of a work. The work is immersed in the nozzle, and a jet of the cleaning liquid is sprayed onto the surface of the work from a nozzle provided in the tank.

In this case, many nozzles are formed inward on a gate-shaped frame so that the surface of the work can be uniformly cleaned, and the frame is rotated around the fixed work to clean it. Are known. That is, the cleaning liquid is sprayed evenly around the work by rotating the gate frame while spraying the cleaning liquid from each nozzle.

[0004]

However, the portal frame formed with a large number of nozzles is very heavy, and when it is attempted to rotate it, a strong supporting mechanism and a driving mechanism must be used. There is a problem of increased costs. Also, since the inertial force when rotated is very large, it is difficult to rotate smoothly unless the center of gravity and the center of rotation are perfectly aligned, but since the cleaning liquid flows inside the frame, the center of gravity position is Easy to change,
Therefore, the center of rotation and the center of gravity cannot be perfectly matched.

When the center of rotation and the center of gravity deviate from each other and the gate-shaped frame cannot be supported, the rotating gate-shaped frame comes off and the cleaning device is damaged beyond repair. There is. Such a problem does not occur when the cleaning liquid is sprayed by the fixed nozzles provided in the cleaning tank, but in this case, the cleaning liquids sprayed from the nozzles interfere with each other to weaken the jet flow. On the contrary, there was a problem that the cleaning ability was lowered. Therefore, in the present invention, cleaning is performed by spraying a strong jet on the surface of the object to be cleaned without rotating the nozzle in the cleaning tank, and without weakening the jet by cleaning liquids sprayed from the nozzles interfering with each other. Making it possible is a technical issue.

[0006]

In order to solve this problem, according to the present invention, a nozzle for spraying a jet of the cleaning liquid onto the surface of the object to be cleaned immersed in the cleaning liquid in the cleaning tank is provided in the cleaning tank. In the cleaning device provided, for each nozzle arranged in a positional relationship in which the jets of the cleaning liquid sprayed toward the object to be cleaned interfere with each other, a pipe for individually supplying the cleaning liquid is provided. Each pipe is provided with a valve that opens and closes the pipe line, and a time delay device that alternately opens and closes each valve for a fixed time is provided.

[0007]

According to the present invention, the pipes for individually supplying the cleaning liquid are provided for the respective nozzles arranged in such a positional relationship that the jets of the cleaning liquid sprayed toward the object to be cleaned interfere with each other. Since the valves for opening and closing the respective pipes of the respective pipes are alternately opened and closed for a fixed time by the time delay device, the cleaning liquid is simultaneously ejected from the nozzles arranged in such a positional relationship that the jets interfere with each other. Therefore, the jet flows are not interfered with each other and weakened, so that the cleaning effect is improved. Further, since each valve is alternately opened and closed and the cleaning liquid is sequentially ejected from all the nozzles, the cleaning liquid is uniformly sprayed on the surface of the object to be cleaned without rotating the nozzles.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on the embodiments shown in the drawings. FIG. 1 is a plan view showing a cleaning apparatus according to the present invention, FIG. 2 is a side view thereof, and FIGS. 3 and 4 are time charts showing the opening / closing sequence of valves.

In the figure, reference numerals 1, 1, ... Are nozzles for spraying a jet of the cleaning liquid onto the surface of the object to be cleaned W immersed in the cleaning liquid in the cleaning tank 2. The cleaning tank surrounds the object to be cleaned W. Two
Is formed on the riser pipes 3A to 3D standing upright along the side wall 2a, facing the object W to be cleaned, and the cleaning liquid can be sprayed from four directions of front, rear, left and right. And the riser pipes 3A, 3A on the front and the riser pipe 3 on the right side
B, 3B ... And the rear riser pipes 3C, 3C ...
Cleaning liquid supply pipes 4A to 4D for individually supplying the cleaning liquid are connected to the riser pipes 3D, 3D on the left side, and valves 5A to 5D for opening and closing the pipe lines are respectively connected to the pipes 4A to 4D. It is installed.

Reference numeral 6 is a control device having a built-in time-limiter device for alternately opening and closing the valves 5A to 5D for a fixed period of time.
The opening order and the opening / closing timing of are set in advance. For example, when cleaning the box-shaped object to be cleaned W, the cleaning liquid sprayed from the nozzles 1, 1, ..., After hitting the surface of the object to be cleaned W, flows laterally along the surface,
The jets of the nozzles 1, 1 ··· that are in the facing relationship such as the front face and the back face and the right face and the left face do not interfere with each other, and are orthogonal to each other such as the front face and the left and right side faces, and the back face and the left and right side faces. The jets of the nozzles 1, 1 ... Which are in a positional relationship interfere with each other to weaken the jets. Therefore, in such a case, as shown in FIG. 3, the valves 5A and 5C of the riser pipes 3A and 3C, which are arranged so as to face each other,
The timing is set so that the valves 5B and 5D of the riser pipes 3B and 3D are alternately opened and closed for a fixed time.

When the object W to be cleaned is small and a plurality of objects W are put together in a bucket or the like for cleaning, the nozzles 1 and 1 are used.
.. Since the cleaning liquid sprayed from flows straight through the gap between the buckets containing the objects to be cleaned W, the nozzles 1, 1 having the positional relationship of facing each other, such as the front surface and the back surface, the right surface and the left surface, The jets of ・ are weakened by interfering with each other, and the jets of the nozzles 1, 1 ・, which are orthogonal to each other such as the front and left and right side surfaces and the back and left and right side surfaces, also interfere with each other to some extent. Therefore, in such a case, as shown in FIG. 4, the timing is set such that the valves 5A to 5D of the riser pipes 3A to 3D are sequentially opened and closed for a fixed time.

Reference numeral 7 denotes a nozzle pipe having a nozzle 8 for injecting air bubbles upward from the bottom 2b of the cleaning tank 2, 9 denotes an air supply pipe connected to the nozzle pipe 7, and 10 denotes the pipe 9. This is an on-off valve that opens and closes the pipeline.

The above is an example configuration of the present invention.
The operation of a case where a plurality of small objects W to be cleaned are put into a bucket and cleaned will be described. First, the object to be cleaned W is immersed in the cleaning tank 2 in a bucket. At this time, all the valves 5A to 5D are closed, and the cleaning liquid has not been sprayed yet. Then, when the article W to be cleaned is completely submerged in the cleaning tank 2, the cleaning is started.

In this case, from the start of cleaning to the end of cleaning, air bubbles are continuously ejected from the nozzle 8 installed on the bottom portion 2b of the cleaning tank 2 and installed on the front, rear, left and right of the object W to be cleaned along the side wall 2a. The cleaning liquid is sequentially and alternately ejected from the nozzle 1. In this example, each riser pipe 3
Pipe 5A-4D for supplying the cleaning liquid to A-3D Valve 5 of 4A-4D
The cleaning liquid is jetted from the nozzles 1, 1 ... In order to prevent the jet streams from interfering with each other by alternately opening and closing A to 5D.

First, the valve 5A inserted in the pipe 4A is
The object W to be cleaned is opened from the nozzle 1 of the riser pipe 3A.
The cleaning liquid is sprayed toward the front of the₁~
T₂), Then valve 5A is closed and at the same time
5B is opened and washed from the nozzle 1 of the riser pipe 3B.
The cleaning liquid is sprayed toward the right side surface of the purified material W (Fig. 4T).₂
~ T ₃), And thereafter, in the same manner, when the valve 5B is closed.
At the same time, the valve 5C is opened and the riser pipe 3C is
The liquid is jetted from the tool 1 toward the back surface of the object W to be cleaned (Fig.
4T₃~ T_Four), Valve 5C is closed at the same time
5D is opened and the nozzle 1 of the riser pipe 3D is covered.
The liquid is jetted toward the left side surface of the cleaning object W (see FIG. 4T)._Four~
T_Five), Repeat this cycle several times to complete the cleaning.
It

In the description of the embodiment, the case where the cleaning liquid is simultaneously ejected in each of the four directions of the front, rear, left, and right of the object to be cleaned W has been described, but the present invention is not limited to this and, for example, the same. Nozzles 1, 1 ... arranged on the front side
May be further divided into several groups, and the cleaning liquid may be alternately supplied to each group, or the cleaning liquid may be alternately supplied to each nozzle. Also,
The order of injection of the cleaning liquid, the timing, and the injection time can be arbitrarily set according to the object W to be cleaned.

[0017]

As described above, according to the present invention, the cleaning liquid is not simultaneously ejected from the nozzles arranged in the positional relationship in which the jets interfere with each other, and therefore the jets interfere with each other. The cleaning effect is improved because it does not weaken and the cleaning liquid is sprayed sequentially from all nozzles by opening and closing each valve alternately, so it is possible to spray the cleaning liquid on the entire surface of the object to be cleaned without rotating the nozzles. Since it is possible to inject the liquid, there is an extremely excellent effect that a sturdy support mechanism and a rotating mechanism are not required, the facility cost is reduced, and the surface of the object to be cleaned can be uniformly cleaned.

[Brief description of drawings]

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

FIG. 2 is a front view thereof.

FIG. 3 is a timing chart showing an opening / closing sequence of valves.

FIG. 4 is a timing chart showing another opening / closing sequence.

[Explanation of symbols]

 W ... ・ Cleaning object 1 ・ ・ ・ ・ ・ ・ Nozzle 2 ・ ・ Cleaning tank 3A-3D ・ ・ Riser pipe 4A-4D ・ ・ Cleaning liquid supply pipe 5A-5D ・ ・ Opening / closing valve 6 ······Control device

Claims (1)

[Claims] 1. A nozzle (1, 1 ...) For spraying a jet of a cleaning liquid on the surface of an object to be cleaned (W) immersed in the cleaning liquid in the cleaning tank (2) is provided in the cleaning tank (2). In the cleaning device provided, the nozzles (1, 1 ...) Arranged in such a positional relationship that the jets of the cleaning liquid sprayed toward the object to be cleaned (W) interfere with each other, individually. Pipes (4A to 4D) for supplying the cleaning liquid are provided, and valves (5A to 5D) for opening and closing the pipe lines are provided for the respective pipes (4A to 4D), and the respective valves (5A to 5D). A cleaning device comprising a time delay device (6) for alternately opening and closing the cleaning chamber for a predetermined time.