JPS61149797A - Scale removing ball - Google Patents

Abstract

PURPOSE:To allow the cleaning without stopping the system operation by providing a ball with a through hole in its center and spiral fins around it with the hole's axis as their center so that the ball may be set in the rotational motion by the fluid flowing through the pipe so as to remove the scale in it. CONSTITUTION:The ball 1 has a columnar hole drilled in its center, and has spirally arranged fins 4 on the surface of the body 2 with said hole as their center. The hole 3 is the passage for utility water flowing in the pipe to flow through, and on account of the hole, the ball's attitude is controlled so the hole 3 in the ball 1 may be automatically positioned in the same direction as the flow in the pipe due to the pressure of the fluid flow. When the ball's attitude is controlled in this way, the ball 1 rotates relative to the hole 3 due to the action of the spiral fins 4, generating the effect to remove the scale etc. in the pipe 5 is a guide groove for utility water flowing in the pipe into the hole 3 to assist the attitude control of the ball 1 quickly and accurately.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a ball used for removing scale in pipes, and mainly relates to a scale used in the field of heat exchange systems etc. for the purpose of utilizing wastewater heat. Concerning elimination balls.

[Conventional technology]

So-called domestic water from ordinary households is mainly generated from bathrooms, kitchens, etc., but this water is not cold water but has a medium temperature, and is discharged as is. L/Kashi: Home air conditioning and hot water supply only need to be at a moderate temperature, and if the heat exchange from the waste water is sufficiently carried out, it will be of great help in energy conservation, so this type of heat exchange method is recommended. development is underway.

However, there are various problems that must be solved in recovering heat from domestic water.

One of them is that domestic wastewater originally contains dirt, and this is the main cause of dirt, ammonium, etc. inside the heat exchanger that cannot be avoided.

One way to remove scale, etc. inside the pipes of a heat exchanger is to use an air or water jet method, but although the former allows cleaning during operation, there are doubts about its effectiveness, and the latter In this case, there are drawbacks such as the need to temporarily stop operation. On the other hand, there is a method in which a brush or sponge ball is passed through the pipe, but these do not have any moving or rotating elements and are simply left to the flow, so the effect is a little tingling, and furthermore, there are disadvantages such as dirt directly adhering to these. There is. This has actually led to clogging in the pipe, and a complete solution has not yet been achieved.

It is an object of the present invention to eliminate the above-mentioned drawbacks and to obtain a scale removal ball that can be given rotational force by the flow of fluid.

[Summary of the invention]

The ball according to the present invention has a through hole in the center of the ball body, has a spiral fin around the axial direction of the hole, and causes rotational movement around the hole by the fluid flowing in the tube. 0
In short, the present invention consists of a hard ball with spiral fins, and a through hole in the center of the ball, which allows the ball to rotate extremely smoothly. The specific gravity of this ball is approximately 1.1-1.25
, preferably a rubber or plastic ring with a diameter of about 1.15 to 1.2.

[Embodiments of the invention]

FIG. 1 is a front view showing an example of the scale removal ball of the present invention, and FIG. 2 is a side view thereof.

FIG. 3 is a conceptual diagram showing an example of a heat exchange system in which the balls of the present invention can be used.

In FIGS. 1 and 2, a ball 1 has a main body 2 and a columnar hole 3 formed in the center, and a fin 4 is spirally arranged around the surface of the main body 2 around the hole 3. It is being The fins 4 are generally provided in the columnar holes 3 at symmetrical positions in the front, rear, left and right directions, and in the illustrated example, the fins 4 are fins 4A.

4B and 4C are divided into three parts in the front and back (up and down direction in FIG. 2), each having five strips.

The first fin 4A and the third fin 4C are symmetrical in the front and back, and the second fin 4B in the center is itself a symmetrical body twisted back and forth.

The columnar hole 3 of the ball l is a passageway through which water for living parts flows inside the tube, and because of the existence of this hole 3, the posture of the ball l is 1! ilI, and by the flow pressure of the fluid, the direction of the flow in the tube and the direction of the columnar hole 3 of the ball 1 automatically point in the same direction.

If the posture of ball 1 is controlled in this way, this ball 1
The ball l is moved into the hole 3 by the action of the spiral fin 4 prepared for
It rotates around , which has the effect of scraping off scale, etc. inside the pipe.

Incidentally, reference numeral 5 in the figure is a groove, which is an introduction groove into the hole 3 for domestic water flowing inside the pipe, and is used to accurately and quickly perform M2R of the posture of the ball 1.

FIG. 3 shows the concept of a heat exchange system in which the ball 1 of the present invention can be used, in which reference numeral 6 represents a drainage channel for domestic water, etc., and 7 represents a heat exchanger. The medium is full. A heat exchange tube 8, which is a long passage, is arranged in this heat exchange medium. Reference numeral 9 is a compensator for ball 1, and to.

11 are a ball circulation pump and a ball circulation pipe, respectively.

As can be seen from this figure, the wastewater flows in the following order: drainage flow 116 - heat exchange tube 8 - drainage flow path 6, and in this case, scale and the like adhere to the inside of the heat exchange tube 8 in particular.

However, ball circulation piping II is installed before and after this heat exchange tube 8.
However, in some cases, it is provided together with a ball circulation pump 10, and a ball collector 9 connected to a ball circulation pipe 11 is provided in the drainage channel 6 after the heat exchange pipe 8.

〔Effect of the invention〕

When the scale removal ball of the present invention described above is used in such a heat exchange system, the fins scrape off the scale inside the pipes due to the effect of the rotating ball, and the system can be cleaned without stopping the operation. As a result, the ball does not get stuck in the pipe, making it an extremely effective system.

[Brief explanation of the drawing]

Figure 1 is a front view of the scale removal ball of the present invention, Figure 2
EJ is a side view thereof, and FIG. 3 is a conceptual diagram of a heat exchange system showing one example in which the balls of the present invention are used. DESCRIPTION OF SYMBOLS 1... Scale removal ball, 2... Ball body, 3... Columnar hole, 4... Spiral fin, 5... Groove, 8... Heat exchange tube, 9... Ball collector, 11...Ball circulation piping.

Claims (1)

[Claims] (1) A ball used for removing scale within a heat exchange tube placed in a heat exchange medium, with a through hole in the center of the ball body and a spiral fin centered around the axial direction of the hole. 1. A scale removal ball, characterized in that the ball is provided around the hole and rotates around the hole by a liquid flowing inside the tube.