JPS6377561A - Washing spray ball - Google Patents

Abstract

PURPOSE:To prevent the generation of the unwashed part by providing a first group of plural nozzles radially to the center of curvature of one curved surface, and radially furnishing a second group of plural nozzles on the curved surface with the eccentric point as the virtual center. CONSTITUTION:The first group 7d of nozzles are radially provided on one curved surface of the hollow ball body 5 from the center of curvature B of the curved surface. Besides, at least one set of the plural nozzles 7a-7c is furnished on the curved surface at a regular pitch from a virtual center A with a point different from the center of curvature B of the curved surface as the virtual center A. Namely, a washing soln. can be injected over the whole tank having plural ruggedness even when the ball is set at a site shifted from the center of the tank, plural washing soln. jets hit each ruggedness, and unwashed part is not generated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning device for a reaction tank used in the manufacturing process of chemicals, and particularly to a cleaning spray ball for spraying a cleaning liquid.

[Prior Art] Figure 3 shows a conventional tank cleaning spray pole described in Sharp No. 50-146368. In Figure 9, the cleaning liquid supply pipe (13) is installed through the center of the tank (11). A spherical spray ball main body (16) is attached to the tip ζ:°"j of the cleaning liquid supply pipe (13). The spray ball main body (16) has an ejection hole (1
7), (17')no! The ejection holes (17), (17')J, -'J are ejected. A recess (15) is provided at the top of the spray ball main body (16), and a recess (15) is provided on the surface of the recess (15). Cleaning liquid supply pipe (13) located above from the ejected hole (17')
As is clear from FIG. 9, the spray pole main body (16) in the conventional example has nozzle holes (17) radially bored from the center of curvature of the pole. ), (17'), and although there is no particular description of the directionality of the nozzle holes (17), (27'), the thickness of the ball body is relative to the diameter of the nozzle holes (17), (17°). Since the thickness is small, the directionality is poor.

In addition, due to factory automation, it has become necessary to continuously and automatically manufacture different Class 4!1 chemicals in one reaction device, and recent reaction tanks are Multiple nozzles (3) for injecting various raw material chemicals into the upper part of (1), (3°
), etc. (two locations are illustrated in the figure), and although not shown, a device for stirring the chemicals is usually installed in the center of the tank. In a tank having such a configuration, the cleaning spray ball (5) may not be installed in the center as shown in the figure. In addition, since solvents are generally used for cleaning liquids, large amounts of cleaning liquid cannot be used due to waste liquid treatment and cost considerations, and cleaning processes must be completed in a short period of time from the standpoint of automation. is required to be cleaned.

[Problems to be Solved by the Invention] As mentioned above, in the conventional cleaning spray ball, the jet holes are drilled radially from the center of curvature of the spray ball body, so the angle with the adjacent jet water stream becomes large. , 3rd
There is no particular problem when cleaning a tank with relatively few irregularities as shown in the figure, but if it is installed in a tank with many irregularities as shown in Figure 2 and in a location away from the center, the cleaning solution may leak. There was a problem in that there were areas that were not sprayed, that is, areas that were left unwashed.

This invention was made to solve the above-mentioned problems, and even if installed at a location away from the center of the tank, the cleaning liquid can be sprayed over the entire tank that has multiple uneven parts, and it can also spray cleaning liquid over the entire tank that has multiple uneven parts. It is an object of the present invention to provide a cleaning spray ball that does not leave any unwashed residue by hitting the cleaning liquid jet.

[Means for Solving the Problems 1jJ] The cleaning spray ball according to the present invention includes a plurality of first nozzle holes provided on at least one curved surface radially with respect to the center of curvature of the curved surface; A plurality of second ejection holes are provided on the orientation surface at a constant pitch radially with a point eccentric from the center of curvature of the curved surface as the virtual center.

[Operation] The first ejection holes (plurality) eject cleaning liquid radially from the center of the spherical surface, and the cleaning liquid ejected from the first ejection holes is injected onto the tank inner wall at regular intervals to clean the tank inner wall.

Each set of second ejection holes ejects a jet of cleaning liquid targeting a specific part such as a nozzle section provided in the tank, and the cleaning liquid ejected from the first ejection hole is used for washing 1? Clean the uneven parts that cannot be cleaned. Each set of second jet holes corresponds to a plurality of jet holes and injects a plurality of streams of cleaning liquid to a target.

In addition, since the injection angles of the adjacent jets of cleaning liquid jetted by the second jet hole group are small, even if there is a manufacturing error in the spray ball and tank, at least one of the multiple jets of cleaning liquid will hit the target. do.

C Example 1 An example of the cleaning spray ball according to the present invention will be described with reference to Fig. g51 and Fig. 2.

The cleaning spray ball is fixed to the cleaning liquid supply pipe (6) and the nozzle part (2) of the tank (1) as shown in FIG. At the top of the tank (1), nozzles (3) and (3°) for injecting raw materials are provided.Although only 2 is shown in Figure 0, there are actually more than 10 nozzles. Also, although not shown, there are nozzles (3
A stirring device for mixing raw materials is also installed in the section ').

FIG. 1 is an enlarged sectional view of the cleaning spray ball. As shown in the figure, the spray ball body (5) is composed of two upper and lower spherical parts (5a) and (5b). Since this cleaning spray ball is always installed in the tank (1) during the manufacturing process of chemicals, etc., it is made of a chemical-resistant material such as metal such as stainless steel or resin such as Teflon (trademark) with a 0-spherical surface. There are jet holes (7a), (7b), (7c), (7d) for jetting cleaning liquid on the surface of
)--- are provided in large numbers. The cleaning liquid is applied with a constant pressure, for example, 1.5 to 2 kg/cm2G (gauge pressure), and when the cleaning spray ball is made of Teflon (trademark), it is sprayed from the strength side and the jet hole. Because it is necessary to ensure the directionality of the jet of cleaning liquid, it has been found from experience that a resin thickness of approximately 7 mm and a hole diameter of approximately 1.2 mm are suitable values.In other words, resin thickness! The nozzle part (2) for attaching the cleaning spray ball is a blind spot due to the cleaning liquid supply pipe (6) when viewed from the spray ball main body (5), so the cleaning liquid jet does not hit the cleaning liquid supply pipe. There is also an ejection hole (7e) at the top of (6) as shown in Figure 1.
, (7f) are provided, and the ejection holes (7e), (7
The cleaning liquid sprayed from f) cleans the nozzle part (2). In order to clean the nozzle (3), the nozzle (3) is attached to the upper flat (5b) of the spray ball body (5) as shown in FIG.
A plurality of ejection holes (7a), (7b), and (7c) are provided for ejecting cleaning liquid with the target of 3), and three jets (10a) are ejected. In order to effectively clean the inner wall of the nozzle (3) as shown in FIG. It must be hit at a certain angle in order to be able to clean the inner wall of the blade, and the permissible angular error is approximately 1 degree according to the illustrated example. However, rather than increasing the machining accuracy by taking into consideration parts machining errors, assembly errors, machining costs, etc., as shown in Fig. It is more advantageous to set a plurality of jets (for example, three jets) to be jetted with slight angle differences. The position and angle of the jet hole (7b) are set so that the jet (10a-2) hits the target nozzle (3) with zero design error. ! ! The jet flows in a parabolic shape due to the influence of force, and it goes without saying that the angle is set taking this phenomenon into account. Also, since the influence of gravity is corrected in this way, the pressure of the cleaning liquid injected into the cleaning spray ball is must be constant, nozzle hole (7a
) and (7b), even if the jet (10a-2) deviates from the target due to machining error or assembly error, the jet (10a-2)
-1) or (10a-3) to effectively clean the nozzle (3).
2) is set to be ejected with a predetermined angular difference (for example, 1 degree). Here, from the diameter of each nozzle hole and the strength of the spray ball body, the pitch of each nozzle hole is required to be about 1.7++ m' as shown in the figure. Therefore, as shown in FIG. 1, a jet hole (7a) for jetting three jets (10a) aiming at the nozzle (3),
(7b) (7c) are each jet (10a-1)
, (IQa-2), (10a-3) are extended in the opposite direction and the point (A) where they intersect is set as the virtual center, and radial lines are formed at a constant angular pitch (for example, 1 degree) with respect to this virtual center. It can be said that it has been established.

In the figure, the jet (10a-2) is the spray ball (5b
) (or the center of curvature of the curved surface of that part), but it does not necessarily have to pass through the center of the spherical surface in this way, and may be at any angle with respect to the spherical surface.

In the above explanation, three jet holes are associated with each other to generate three jets for one target, but this number is determined by taking into account the location and size of the target object to be cleaned. It goes without saying that the number may be more than that, and that similar ejection holes may be provided for other nozzles (not shown). In addition, in order to clean the uneven part of the tank (1), as shown by the nozzle (7d) in Fig. The jet of cleaning liquid radiated onto the inner wall of the tank (1) travels along the inner wall of the tank (1) and cleans the tank (1), and the non-ejection holes (4) at the bottom of the tank (1) ) is discharged to the outside of the tank (1).

The spray ball body (5) is equipped with approximately 80 spray holes in total, and the cleaning liquid sprayed from these holes covers all parts of the tank (1), so there are no unwashed areas in the tank (1). Although only one cleaning spray ball is shown in FIG. 2, a plurality of cleaning spray balls may be installed.

[Effects of the Invention] As explained above, the cleaning spray ball according to the present invention has a second jet hole for jetting the cleaning liquid targeting each uneven portion of the tank, and this jet The holes are designed to ensure that the cleaning solution hits the target area even if there is an error due to machining or assembly errors. There is also a first spout hole that spouts out the cleaning liquid, so there is no unwashed area throughout the tank.Also, since the cleaning liquid is spouted over the entire tank, you can rotate the cleaning spray ball or There is no need to move it up and down, and the amount of cleaning solution is kept to a minimum.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the cleaning spray ball according to the present invention, FIG. 2 is a sectional view showing a reaction tank in which the cleaning spray ball is installed, and FIG. 3 is a conventional cleaning spray ball. (1) in Figure 0, which is a diagram showing the tank,
(5a), (5b) are spherical surfaces forming the spray ball body, (7a), (7b), (7c),
(7d). (7e) and (7f) are ejection holes, respectively. Figure 1 Figure 2 Cleaning j night↓ t9+-out Figure 3

Claims (2)

[Claims] (1) A plurality of first holes provided on at least one curved surface on the hollow ball body in a radial direction from the center of curvature of the curved surface.
a group of ejection holes, and at least one set of second ejection holes provided on the curved surface with a virtual center at a point different from the center of curvature of the curved surface, and a plurality of second ejection holes provided at a constant pitch in a radial direction from the virtual center; A cleaning spray ball equipped with (2) The cleaning spray ball according to claim 1, wherein the radius of curvature of the second ejection hole is larger than the radius of curvature of the first group of ejection holes.