JPH02503162A - Directional tank cleaning process - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Directional tank cleaning process Background of the invention Tank cleaners of the type with rotating spray nozzles are commonly used. pass through the machine A type driven by pressurized cleaning fluid is shown in Rocker U.S. Pat. Nos. 3 and 6. 37.138. It is marketed under the trademark GAMAJET II. This tank cleaner has a completely spherical, omnidirectional spray pattern. child The spray pattern is created by moving the spray nozzle around two vertical axes. It is formed. The tip of the nozzle tracks a spherical pattern similar to a ball of thread. spray pattern The omnidirectional nature of the tube makes it easy to clean the entire interior surface of a tank or other container. It is really useful when

However, in some situations it may not be necessary to spray cleaning fluid in all directions. , or may not be allowed. For example, a fermentation tank with an open top can be used in all directions. Not a good target for cleaning machines. In some cases, even if the container is covered In some cases, it may be better to spray the cleaning liquid only on the part of the container below the point where it forms. Ta For example, in some fermentation processes, once the tank is emptied, the upper liquid level It is advisable to thoroughly clean only the lower part. This is a type of beneficial microorganism This is to ensure that biological organisms are not removed or killed. In other words, this In such situations, omnidirectional spray patterns are not acceptable. in other situations A tank or other container only needs to be cleaned below its horizontal position. this Using an omnidirectional tank cleaning machine under such conditions is completely inefficient.

In addition, tanks often have strips of material that are less soluble in intermediate locations along their walls, especially in the upper liquid level. come to have. In such cases, the omnidirectional cleaning machine removes this difficult-to-dissolve band. In order to remove the Ru.

Summary of the invention Applicant's invention provides a directional tank cleaning system with a truncated, hemispherical spray pattern. Uses an improved directional tank cleaning machine to form a tank cleaning machine and thus an omnidirectional tank cleaning machine Advantageously used in situations where it cannot be used or is ineffective Regarding the system that has become possible.

The directional tank cleaner includes a first stationary housing and a first stationary housing mounted on the first housing. 2 housing and the first, typically vertically located, of the 171st housing. a second housing that rotates around an axis; The No. 371 Uzing was suspended and the No. 371 Uzing rotated around the second axis. 371 Uzing. The second housing is housed within the 171st housing. is driven around the first housing through a gear train driven by a mixing vane. be moved. The mixing vanes are rotated by pressurized cleaning fluid passing through the first housing. It is closed. The cleaning fluid then passes through the second and third housings and into the third housing. through at least one nozzle mounted on the ring. second housing, Since the third housing and the nozzle rotate about the first axis, the third housing The gear is typically passed through a pair of bevel gears mounted on first and third housings. and is driven around a second axis. The second axis makes a first acute angle with respect to the first axis. However, the third nozzle axis forms a second acute angle with respect to the second axis. By this truncated spherical spray pattern rather than the omnidirectional spherical spray pattern of conventional tank cleaners. A fog pattern is obtained.

An important feature of Applicant's invention is that, assuming the first axis is generally vertical, The spray pattern is concentrated at its upper and lower ends. Therefore tank clearing Remove the previous liquid by lowering the vacuum cleaner to a horizontal position corresponding to the upper liquid level in the tank. Difficult to dissolve substances that have settled on the surface will be sprayed from an omnidirectional tank to concentrate the spray on this area. It is removed more quickly than with a vacuum cleaner. Furthermore, the concentration of pressurized liquid It occurs directly below. Many tanks have a drain hole directly below where the tank cleaner will be placed. , which prevents the formation of residue that would otherwise occur at the bottom of the tank. can be stopped.

Preferably, both the first and second angles are 45 degrees. This makes it the same as the machine. This allows for the formation of hemispherical spray patterns with a single flat border at the same height. . This is because the upper boundary is at the same height as the machine, making it difficult to position the tank cleaner properly. It is important because it means that it can be learned. Once the tank cleaner is lowered into the tank, and when carrying out work, be careful not to generate dangerous or harmful vapors or gases. This is because further height adjustment would be extremely inconvenient and dangerous. is very important.

Other features and advantages of the invention will be apparent from the following detailed description of the preferred embodiments illustrated in the accompanying drawings. Therefore, it becomes clear.

Brief description of the drawing FIG. 1 is a side sectional view of a tank cleaning machine used when carrying out the cleaning method of the present invention. .

Figure 2 shows the spray pattern obtained by tracking the tip of the nozzle during operation. FIG.

Detailed description of the preferred embodiment In FIG. 1, the tank cleaning machine 2 has a first stationary housing 4 and a stator 10 is passed through the tank cleaning machine 2. housing with a fluid passage 6 through which a cleaning fluid flows along a first fluid passage 8; It has a mixing vane 12 located within the housing 4 and a through hole 13. mixed feathers The root 12 extends downwardly into the gear portion 16 of the stationary housing 4 and the axis 1 of the mixing vane. It is mounted on 4. The mixing vane axis defines a first, typically vertical axis 18. , and drives a gear train 20 terminating in a pinion gear 22 . Binion gear 22 turns A ring internal gear 24 mounted on a rotatable second housing 26 is driven.

The gear train 20 acts as a speed reducer so that the housing 26 has a lower speed than the mixing vane shaft 14. It is designed to rotate.

Said structure is described in US Pat. No. 3.3, incorporated herein by reference. 637. Listed in No. 138 It has the same structure and operates in the same way.

The second housing 26 has an extension 28 extending downwardly and outwardly from the first axis 18. ing. A third rotatable housing 30 is rotatably mounted on the extension portion 28. , and the second axis 32 is positioned so as to form a first angle a with the first axis 1B. It is designed to rotate.

A pair of nozzles 34 are mounted on the third housing 30, and each nozzle is connected to the second glaze line 32. It is located along a third axis 36 at a second angle β with respect to the third axis 36 . Preferred figure 1 In a preferred embodiment, β and α are both equal to 45°. Therefore, the cleaning fluid 1 through the hole 13 along the first fluid passage 8 and along the second passage 38 in the second housing 26. through the hole 40 in the extension 28 and along the third fluid passageway 42 through the rectifier 44. and finally passes through the nozzle tip 46 and is discharged along the nozzle axis 36. Become.

The first, fixed bevel gear 48 is connected to a flange extension 50 of the gear box section 16 and a stationary gear. It is mounted between a ring 52 attached to the lower part of the housing 54. Second A bevel gear 56 is attached to the third housing 30 and engages the first bevel gear 48. It is positioned so that The second and third housings 26.30 are binions rotates around the first axis 18 by the action of the gear 22 and the ring gear 24; The engagement of the bevel gears 48 and 56 similarly connects the third housing 30 and the nozzle 34 to the second axis. Rotate around line 32. The number of teeth of the bevel gear 48.56 is The spray pattern is then selected to change. In this preferred embodiment In this case, the number of teeth of the bevel gear 48 is 61, the number of teeth of the bevel gear 56 is 60, and the number of teeth of the bevel gear 56 is 60. The fog pattern is delayed by 6°.

FIG. 2 shows a pattern 60 of the nozzle tip. This pattern 60 is a mixture of feathers. The shaft is driven by a motor, and a light emitting diode is mounted at each nozzle tip 46. This was obtained from the elapsed time photographs that became available. obtained in this way The image shows uniform coverage of the entire pattern 60. However, above It can be seen that each line 62 is concentrated near the edge 64 and a relatively small lower edge 66. . Due to this, the machine is 2, a concentration of the spray occurs. Therefore, the spray pattern is generally hemispherical. Not only are you limited to the pattern, but its top edge is at the same height as the tank cleaner. When the tank cleaning machine is in a horizontal position, the hard-to-dissolve sediment that has formed inside the tank can be removed from the top. Converging the passages near the edge 64 further concentrates the spray of cleaning fluid.

Is the tank drain hole often located directly below the tank inlet through which the cleaner passes? The concentration of this cleaning solution directly below the tank cleaner means that the removed contaminants solidify. prevent it from forming and accumulating around the drain.

It should be noted that the lower edge 66 is not curved downward. This is the first As shown, the nozzle axis 36 extends from the first axis 18 when it is perpendicular. This reflects that they are not biased. The spray pattern 60 actually has a flat top edge. and a lower edge 64, 66, but in this embodiment, in practice, the lower edge 66 is Can be ignored. The reason is that the distance between the axes 18 and 36 is relatively short. be.

The present invention has been described using terms such as upward, downward and vertical. This is mentioned above This is because it was thought to be convenient for explaining the embodiment in such an orientation.

Machine 2 can be used in any desired position, but in this case the relative terms upper, lower ``direction'', ``vertical'', etc. are expressed in different sentences. However, the applicant's invention It was designed to include other directions as well.

In use, the user places the tank cleaning machine 2 into the liquid cleaning machine at the fluid volume 6. (not shown).

The machine 2 is then suspended in a container, chamber or part to be cleaned. Cleaning liquid to pump Therefore, it is fed into the machine, passes through the stator 10 and the mixing vane 12, and then passes through the hole 13. and flows out from the first housing 4. Therefore, the mixing blade is rotated by the rotating mixing blade shaft 1 4 to drive the binion gear 22 of the drive train 20. Binion gear 22 drives the ring gear 24 and thus keeps the second housing 26 on the first axis 18. Rotate it instead. When the second housing 26 rotates, the bevel gear 48.5 6 holds the third housing 30 together with the nozzle 34 at an acute angle α with respect to the first axis 18. The second axis 32 is rotated around a second axis 32 located at the same position. Nozzle 34 is a cleaning liquid is oriented along a third axis 36, which is oriented along a second axis 32 with respect to the second axis 32. It is located at an acute angle β. Therefore, the nozzle 34 directs the cleaning liquid along the third axis. rotates about the first axis 18 and the second axis 32 when oriented.

The embodiments described above do not depart from the subject matter of the invention, which is defined by the following claims. However, it can be transformed.

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Claims (5)

[Claims] 1. In the spray cleaning method, a stage for positioning the cleaning fluid sprayer in a selected horizontal position close to the surface to be cleaned; floor and Supplying pressurized cleaning fluid to the machine and cleaning from the machine to a truncated glomerular spray pattern. Stage the scavenging liquid to define a plane through which the truncated spray pattern generally passes through the machine. the spray pattern is concentrated in a band proximate to the truncated side; A cleaning method comprising the steps of: 2. 2. A cleaning method according to claim 1, wherein the machine is positioned with the truncated side horizontal. 3. 3. The method of claim 2, wherein the truncated side is the upper side of the spray pattern. 4. A method for cleaning a portion of a tank below a predetermined horizontal position. positioning the scavenging liquid sprayer at a predetermined horizontal position within the tank; the step of pumping the cleaning fluid into the machine and the horizontally truncated thread ball from the machine; At the stage of directing the cleaning liquid into the spray pattern, make sure that the spray pattern is completely horizontal. Once the truncated sides are defined, the spray pattern should be brought closer to the truncated sides. The annular part of the tank collects the concentrated cleaning liquid at a certain horizontal position. A cleaning method comprising a step of accepting spraying. 5. A method of spray cleaning only approximately the lower half of the tank, using pressurized cleaning fluid. The flow is staged in a series of passes to direct the flow, with each pass maximizing the liquid flow. First, at the maximum height required for cleaning, you will be guided to a pre-selected point on the side wall; is guided obliquely below the side wall across the bottom of the tank, and on the opposite side wall. Now guided diagonally upward to the same horizontal plane at a pre-selected point angularly deflecting a sufficient number of passes from the stage, the first pass, and each other pass; A substantially flat surface that defines approximately the lower half of the tank where the flow of cleaning fluid is to be cleaned. the entire spray pattern resembles a horizontally truncated thread ball. A spray cleaning method with steps.