JP2788624B2 - Suction filtration mechanism in circulating hot water bath - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction type filtration mechanism in a circulating hot water bath.

[0002]

2. Description of the Related Art Circulating hot water baths are known which circulate warm water in a bath tub to purify and reinforce minerals, and also heat the bath to an appropriate temperature and return it to the inside of the bath tub. This circulation type hot water bath generally has a built-in filter device having a normal filter and an ore particle layer, and removes dust such as hair in hot water with a filter and reinforces minerals in the hot water with the ore particle layer. Therefore, it is a matter of course that the filter is clogged after a long use, and the surface of the ore grain layer is adhered to the mucous membrane due to dirt, so that regular cleaning or replacement is required.

Usually, this type of circulating hot water heater is operated for 24 hours so that the bath can be taken at any time. Therefore, it is necessary to clean and replace the filter of the filter device and the ore bed in a short time. There is. In such a circulation type hot water bath, only Japanese Patent Application Laid-Open No. Hei 6-208647 discloses that the filtration tank is disposed in the suction system.

That is, as shown in FIG. 2, a suction port 2 and a discharge port 3 are provided at the bottom of a bucket-shaped filtration tank 1, and a suction pump 4 is connected to the discharge port 3 side to form a suction system. ing. The tank 1 is fitted with a removable tubular filter 7 having an ore particle layer 5 on the inner side and a filter layer 6 on the outer side, and the hot water to be treated enters through the suction port 2 as shown by the arrow. After passing through the layer 6 and the ore grain layer 5 and passing upward from the through-hole portion 8a of the top plate 8, passing through the center through tube 9, passing through the discharge port 3, and reaches the suction pump 4.

[0005] As shown in FIGS. 3 and 4, the top plate 8 is provided with a foldable handle 1 for lifting up a cylindrical filter.
0 is attached, and the top plate 8 is attached as shown in FIG.
The ore grain layer 5 can be taken out as being detachably assembled to the frame material such as the lower penetration cylinder 9. Naturally, the present applicant has applied a sealing material 12 around the opening / closing lid 11 proposed in Japanese Patent Application No. 232388/1995.
(Since the filtration tank 1 is a suction system, no special fixing means is required for the opening / closing lid 11, and the opening / closing lid 11 naturally opens to the tank opening due to the internal negative pressure if a peripheral seal is secured. The mounting hole 13 is pierced at the center,
A hanging shaft 15 is loosely fitted through the bottom of the handle 14. A rubber ring-shaped packing material 16 is tightly fitted to the shaft 15. Locking piece 1 at lower end of shaft 15
7 prevents the handle 14 from being disengaged. The ring-shaped packing material 16 controls ventilation and air shielding. That is, in FIG. 5, the ring-shaped packing material 1 tightly fitted to the shaft rod 15 is used.
Numeral 6 is aspirated by the negative pressure in the tank and adsorbed on the periphery of the mounting hole 13 to block air (a). Further, when the handle 14 is picked up, the ring-shaped packing material 16 is also lifted, and a ventilation path is formed in the suction surface to perform ventilation (b).

[0006] In the figure, reference numeral 18 denotes a peripheral weir to be attached on the lid 11, and the side of the ring-shaped packing material 16 comes into contact as shown in FIG.
The air-tightness of the ring-shaped packing material 16 is improved. Thus, in the filtration tank of the circulation type hot water bath, the maintenance opening / closing lid can be opened simply by picking up the handle 14 despite the suction system. Can be realized.

[0007] In the circulation type hot water bath of the applicant,
As shown in FIG. 6, the suction port 2 is connected to a bathtub 24, and the discharge-side hose 25 of the suction pump 4 is connected to the filtration tank 1.
(It can't be raised any more because it's in a makeup case.)
It is connected to a bathtub.

[0008]

In the filtration tank of the applicant of the present invention, when the suction pump 4 stops working, the head 26 in the center through tube 9 is set to the head 27 of the hose 25. Accordingly, a space 28 not filled with water is formed in the upper part. Here the waterway is completely shut off. The center through tube 9 must be designed to be as close as possible to the lid 11 in order to bring water into contact with the ore grain layer 5 as much as possible, and the height of the center through tube 9 cannot be designed low to achieve continuous water passages. . For this reason, when restarting the suction pump 4, it is troublesome to open the lid 11 and fill with priming water, or forcibly restart to check the existence of the space 28 under the noise and vibration of bubbling. The only option is to run idle while allowing it. Alternatively, it is necessary to replace the suction pump 4 with a self-priming pump for attaching a self-priming tank to the expensive expensive large makeup case.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to design a self-priming pump having a size that obstructs the design problem of being expensive and compact. It is an object of the present invention to provide a suction-type filtration mechanism in a circulating-type hot water bath that can completely eliminate the space 28 by restarting without change and reproduce operation promptly.

[0010]

An ore layer and a filter layer are arranged on the outer periphery of the center through tube, a discharge port is arranged at the lower end of the center through tube, and a suction port is arranged below the filter layer. In a so-called suction-type filtration tank whose outlet is connected to a suction pump, a small through-hole for passing warm water in the filtration tank is drilled at the lower part of the center through-tube, and when the suction pump is stopped, a water path is cut off and idles. Can be supplied to the suction pump as warm water in the filtration tank through the small through-hole as priming water,
It is intended that the restart of the suction pump can be gradually normalized.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. A small through-hole 29 is formed in the lower part of the center through-tube 9 of the filtration tank 1. Due to this, when the suction pump 4 restarts and sucks out the water in the central through-tube 9 and tries to idle, the hot water in the filtration tank 1 does not pass through the upper end of the central through-tube 9 and becomes small. It flows into the discharge port 3 through the through hole 29.

Thus, even if the formation of the space 28 not filled with water as described with reference to FIG. 6 occurs, the suction pump 4 does not run idle when it is restarted. In other words, the center through tube 9
This is because the warm water in the filtration tank 1 is supplied as so-called priming water from the small through-holes 29 to the space after the remaining remaining water is sucked therein. In practice, the suction pump 4 operates almost normally by priming from the small through-hole 29 while gradually taking in residual air in the space 28.

On the other hand, warm water is sucked up from the suction port 2 into the filtration tank 1 which increases the degree of negative pressure by the suction, and the space 28 gradually filled with water is eliminated. However, under normal conditions, the main circulation flow path of the hot water is maintained through the upper end of the center through tube 9 and the necessary contact with the filter medium is ensured.

[0014]

Since the present invention has the above configuration, the following effects can be obtained. The filter tank can be provided with a self-priming pump function without using an expensive self-priming pump with a large case and without special modification. Pump idling could be eliminated.

[Brief description of the drawings]

FIG. 1 is a detailed vertical sectional view of a main part of a suction-type filtration tank embodying the present invention.

FIG. 2 is an explanatory diagram of a suction system filtration tank.

FIG. 3 is a development view of a suction system filtration tank.

FIG. 4 is a development view of a suction system filtration tank.

FIGS. 5A and 5B are explanatory views when the suction system filtration tank is closed and opened.

FIG. 6 is an explanatory diagram of formation of a water-unsatisfactory space that occurs when a suction pump is stopped in a suction system filtration tank.

[Explanation of symbols]

 Reference Signs List 1 tank 2 suction port 3 discharge port 4 suction pump 5 ore granule layer 6 filter layer 7 cylindrical filter body 8 top plate 8a through hole 9 central through tube 10 handle 11 opening and closing lid 12 sealing material 13 mounting hole 14 handle 15 shaft rod 16 Ring-shaped packing material 17 Engagement piece 18 Perimeter weir 24 Bath tub 25 Discharge side hose 26 Water head 27 Water head 28 Space 29 Small through hole

Continued on the front page (58) Fields surveyed (Int.Cl. ⁶ , DB name) B01D 35/027 B01D 29/50 B01D 29/92 B01D 29/11 B01D 24/10 C02F 1/28

Claims (1)

(57) [Claims] 1. An ore grain layer and a filter layer are arranged on the outer periphery of a center through cylinder, a discharge port is arranged at a lower end of the center through cylinder, a suction port is arranged below the filter layer, and the discharge port is a suction pump. In a so-called suction system filtration tank that is connected to
A suction-type filtration mechanism in a circulating-type hot water bath, wherein a small through-hole through which hot water in a filtration tank passes is formed in a lower portion of the center through tube.