JPH0328885Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a filtration device that eliminates clogging and can be used for a long period of time without cleaning.

(Prior art and its problems) As shown in Fig. 1, a conventional strainer has a conical base A with a large number of holes and an open base, and a filter body B is brought into close contact with the inner surface of the conical base A. The strainer is inserted into the fluid piping so that the base end opening is on the upstream side, and impurities in the fluid are filtered by the filter body B. However, since the flow of fluid in this strainer is steady, there is a drawback that the surface of the filter body B is relatively quickly and almost uniformly covered with the layer C of the material to be filtered, which tends to cause clogging.

In filtration devices such as strainers, it is of course important to maintain high filtration efficiency, but it is also important not to require cleaning for a long period of time. The ability to continue with this process is a major factor determining the value of the filtration device itself.

(Purpose of the invention) Therefore, the present invention differs from conventional strainers,
A filtration device that can be used for a long period of time without cleaning etc. by providing a blade body at the base end opening to make the flow of fluid a swirling flow so that the inner surface of the filtration body is not uniformly covered with the filtered material. The purpose is to provide.

(Means for Solving the Problems) Therefore, the present invention provides a conical strainer having a large number of holes, a filter body in close contact with the inner surface, and a blade body provided near the base end of the opening. This filtration device is characterized in that the base end of the opening is installed so as to be in close contact with the inner wall of a linear fluid path.

The present invention will be explained below.

Cosmetics such as hair washing foam and food products are often contaminated with impurities, and it is of course preferable to remove these impurities before storing these fluids in a case or the like and making them into products. It is.

Separately setting this removal step is not preferable because it increases cost and installation area, and has conventionally been performed at the same time as fluid transport. In other words, a filtration device is installed in the fluid path piping to transport the fluid and remove impurities at the same time. In the case of a straight fluid path, the strainer shown in Figure 1 is installed in close contact with the inner surface of the fluid path to perform filtration, but as mentioned above, this is because the fluid is in a steady flow and impurities are spread uniformly across the inner surface of the strainer. Even if the amount of coating is small, there is no effective filtration area and it becomes impossible to continue effective filtration operation.

Therefore, in the present invention, a blade body for converting a steady flow of fluid into a swirling flow is provided near the base end of the strainer installed in a straight fluid path, and the fluid that has been made into a swirling flow by the blade body is The material to be filtered, which is almost uniformly coated on the inner surface of the filter body, is peeled off from the inner surface and collected at the tip of the strainer, thereby suppressing a decrease in the effective filtration area and efficiently performing the filtration operation over a long period of time. There is. Furthermore, in the present invention, the filter body has a conical shape, and the fluid from which the filtered matter has been removed flows out from the filter body between the filter body and the inner wall of the fluid path and flows as it is within the fluid path.
There is almost no increase in fluid resistance due to the installation of the filtration device.

The present invention will be explained in more detail below based on the embodiments shown in FIGS. 2 and 3, but the embodiments are not intended to limit the present invention.

FIG. 2 is a perspective view showing an example of a strainer used in the present invention, and FIG. 3 is a longitudinal cross-section showing an example of a filtration device according to the present invention in which the strainer shown in FIG. 2 is installed in a straight fluid path. It is a diagram.

Reference numeral 1 denotes a conical base body in which a large number of circular holes 2 are bored, and the base end of the base body 1 is open. 3 is a filter body coated on the inner surface of a conical base;
Impurities etc. in the fluid are filtered out. 4 is a blade provided near the base end opening of the conical base 1;
In this embodiment, it is made up of three blades that curve in the same direction.

As shown in FIG. 3, when a strainer having such a configuration is installed in close contact with the inner surface of the linear fluid path 5, the fluid flowing from the right side of the fluid path 5 hits the blade body 4 as shown by the arrow. The flow turns into a swirling flow, and moves forward while peeling off the material to be filtered that has already adhered to the inner surface of the filter body 3, collecting the material to be filtered at the tip of the strainer, and exposing other parts of the filter body 3 to the fluid. maintain this condition to suppress the decrease in effective filtration area. Therefore, impurities in the fluid can be efficiently removed without disassembly and cleaning over a long period of time.

(Effects of the Invention) In the present invention, a vane body for converting a steady flow of fluid into a swirling flow is installed near the base end opening of the strainer.

As a result, the fluid converted into a swirl flow moves forward while peeling off the substances to be filtered that have already adhered to the inner surface of the filter body 3, and collects the substances to be filtered at the tip of the strainer. It has a continuous filtration function without the accumulation of substances to be filtered, and can achieve the very strong requirement for filtration equipment to perform filtration work over a long period of time without disassembling the equipment. . Furthermore, since there is almost no decrease in the effective filtration area and the fluid from which the filtered substances have been removed can be smoothly circulated, there is almost no increase in resistance due to the installation of the filtration device of the present invention, and the filtration operation is extremely efficient. becomes possible.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view showing an example of a conventional strainer, Fig. 2 is a perspective view showing an example of a strainer used in the present invention, and Fig. 3 shows the strainer shown in Fig. 2 installed in a straight fluid path. FIG. 2 is a vertical cross-sectional view showing one embodiment of the installed filtration device according to the present invention. DESCRIPTION OF SYMBOLS 1... Conical base, 2... Circular hole, 3... Filter body, 4... Vane body, 5... Straight fluid path.

Claims (1)

[Scope of utility model registration request] The opening base end of a conical strainer is formed with a large number of holes, a filter body is brought into close contact with the inner surface, and a blade body is provided near the opening base end of the conical strainer, and the opening base end thereof is brought into close contact with the inner wall of the linear fluid path. A filtration device characterized by being installed as follows.