JPH09152191A - Circulation type purifier for bath - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable supplying a circulating pump and water-suction pipe with priming water easily and surely independently the position of a filter whether the filter is above or below the water level of a bathtub. SOLUTION: A water-suction pipe 7 is provided with a first check valve 9 for preventing water from flowing backward to a bathtub 1. A discharge side channel 34 which connects a circulating pump 5 and a discharge pipe 8 is positioned higher than the circulating pump 5 and the water-suction pipe 7. To this discharge side channel 36 in the part of it placed on the side of the circulating pump 5 from the uppermost part a priming water pipe 48 connects a water-supply hole 69 from which priming water is supplied to the circulating pump 5 and the water-suction pipe 7. In supplying priming water this constitution enables supplying priming water from the water-supply hole 69 to the circulating pump 5, whereas a second check valve 51 is provided in the priming water pipe 48 as a means of stopping a flow of discharged water from the circulating pump 5 to the water-supply hole 49.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulation purifying apparatus for a bath employing an underwater filtration system or a pumping filtration system.

[0002]

2. Description of the Related Art As a circulating purifying apparatus for a bath, for example, as described in Japanese Utility Model Publication No. 2-109968, a circulating pump circulates water in a bath through an intake pipe and a discharge pipe while a filter is used. Various proposals have been made to purify water in a bathtub.

[0003] In this circulation type purification device, a filter is interposed between a circulation pump and a water absorption pipe, and the filter and the circulation pump are housed vertically in a device body installed above the water surface of a bathtub. The upper lid of the apparatus main body is detachably provided, and the lid portion of the filter can be opened and closed when the upper lid is removed.

When the circulation pump is operated after cleaning the filter material in the filter, the tip of the discharge pipe is raised above the opening side of the filter, and the filter is opened from the opening side of the filter. A system is adopted in which the priming water is supplied to the inside of the filter, and the priming water is supplied to the entire circulation pump, the filter and the water absorption pipe.

[0005]

In the conventional priming water supply system, when operating the circulating pump, the upper lid of the apparatus main body and the lid of the filter are opened, and the circulating pump and the water absorption are opened from the opening side of the filter. Since the priming water is supplied to the pipe, it is necessary to attach and detach the top cover of the device main body and the lid of the filter every time the priming water is supplied, so that the work of supplying the priming water is troublesome. .

Further, when a circulation pump and a filter are provided in the main body of the apparatus and a pumping-up filtration method is adopted in which the water in the bathtub is pumped into the filter by the circulation pump and filtered,
If the upper lid of the device main body is opened, there is a filter inside the device main body, and it is possible to supply priming water from the opening side of the filter. When an underwater filtration method is adopted in which a filter is connected and a filter is arranged in the bathtub water to perform filtration, it is impossible to supply priming water to the circulating pump side with the conventional priming water supply structure. In view of such conventional problems, the present invention can easily and surely supply priming water to a circulation pump and a suction pipe regardless of the position of a filter, regardless of the position of the filter even when the filter is above or below the water surface of a bathtub. An object of the present invention is to provide a circulation type purification device for a bath.

[0007]

According to the present invention as set forth in claim 1, the circulation pump 5 circulates the water in the bath 1 through the water absorption pipe 7 and the discharge pipe 8, while the filter 10 is used to circulate the water in the bath 1. In a circulation type purification device for a bath that purifies water, a first check valve 9 that blocks the reverse flow of water to the bath 1 side is provided in the water suction pipe 7, and the discharge that connects the circulation pump 5 and the discharge pipe 8 is provided. The side flow path 34 is configured to be higher than the circulation pump 5 and the water absorption pipe 7, and the water supply port 49 for supplying the priming water to the circulation pump 5 and the water absorption pipe 7 is located closer to the circulation pump 5 than the uppermost part of the discharge side flow path 34. Is connected via the priming pipe 48 to enable the priming water to be supplied from the water supply port 49 to the circulation pump 5 at the time of supplying the priming water, and to prevent the discharge water from flowing from the circulation pump 5 to the water supply port 49 side. The stop valve 51 is provided on the priming pipe 48.

According to a second aspect of the present invention, in the first aspect of the invention, a sealing plug 63 for sealing the water supply port 49 is provided.
Is provided.

The present invention according to claim 3 is the same as the invention according to claim 1 or 2, wherein the circulation pump 5 and the priming pipe 48 are provided.
The water supply port 49 is provided so as to be opened on the upper surface side of the device body 2, and the sealing plug 63 is removably inserted into the water supply port 49 from the upper side of the device body 2. Is.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the water supply port 49 to the funnel 61 are provided.
The second check valve 51 is provided near the water supply port 49 so that the second check valve 51 opens when the funnel 61 is inserted into the water supply port 49.

According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, a valve body made of an elastic material is provided between a pair of fitting valve bodies 52,66, 53,67. The check valves 9 and 51 are formed by interposing 55 and 69, and the valve bodies 55 and 69 have annular portions 58 and 73 sandwiched between a pair of valve bodies 52, 66 and 53 and 67, and the opening and closing direction. Through the bendable connection part 59,78 to the annular part 58,73
Valve seats 54,6 integrally formed in and in one valve body 52,67
It is provided with valve lid portions 60 and 79 which can be brought into and out of contact with the valve 8.

The present invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the upper lid 14 of the apparatus main body 2 is provided.
A water supply port 49 is provided at the same time, and a valve connection portion 50 projecting downward from the upper lid 14 is integrally formed so as to surround the water supply port 49, and a second check valve 51 is connected to the valve connection portion 50 from below. It was done.

According to a seventh aspect of the present invention, in the invention according to any one of the first to sixth aspects, a filter 10 is connected to the lower end of the water absorption pipe 7, and the filter 10 is connected to the water in the bath 1. It was placed in.

[0014]

An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. In FIG. 1, 1 is a bathtub, 2 is a device body, and this device body 2 is a mounting base.
It is attached to the corner of bathtub 1 through 3. Equipment body
Inside 2, a circulation pump 5 with a motor 4 and a heater 6 are installed. A water absorption pipe 7 and a discharge pipe 8 extending downward from the bottom surface of the device body 2 are connected to the device body 2 from the lower side, and a first check valve 9 and a filter 10 are provided at the lower end of the water absorption pipe 7.
In addition, the jet nozzle 11 is connected to the lower end of the discharge pipe 8, respectively. Water suction pipe 7, discharge pipe 8, first check valve 9, filter
The 10 and the injection nozzle 11 are arranged at the corners in the bath 1, and the first check valve 9, the filter 10 and the injection nozzle 11 are immersed in the water of the bath 1.

The apparatus main body 2 is hollow, and as shown in FIG. 2 to FIG. 4, a U-shaped front body portion 12a and a rear body portion 12b are connected to each other in the front-rear direction to form a rectangular rectangular tube shape. The body 12 includes a bottom plate 13 mounted on the lower side of the body 12, and an upper lid 14 detachably mounted on the upper side of the body 12.

As shown in FIG. 5, the bottom plate 13 can be attached to and detached from the mounting base 3 by a nut 15 fixed to the bottom plate 13 and a screw 16 which is inserted into the mounting base 3 from below and screwed into the nut 15. It is fixed to. As shown in FIGS. 2 to 4, a cylindrical water absorption pipe connecting portion 17 and a discharge pipe connecting portion 18 are integrally formed on the bottom plate 13 on the left and right sides of the front portion.
The water absorption pipe 7 is connected to the water absorption pipe
The discharge pipes 8 are detachably connected to 18 from the lower side. The water absorption pipe 7 and the discharge pipe 8 are made of a flexible material such as urethane rubber.

As shown in FIG. 5, the front side of the bottom plate 13 between the water suction pipe connecting portion 17 and the discharge pipe connecting portion 18 is separated from the front and rear by a first suction pipe connecting portion 19 and a second suction pipe connecting portion. The portion 20 is integrally formed so as to project upward, and the air pipe connecting portion 21 communicating with the first suction pipe connecting portion 19 is integrally formed so as to project downward.

First suction pipe connection 19 and second suction pipe connection
As shown in FIG. 5, a suction pipe 22 is detachably connected to 20 from above. In addition, a void 23 is formed in the mounting base 3 in correspondence with the second suction pipe connecting portion 20,
The air in the void 23 is sucked from the opening end side of the second suction pipe connecting portion 20, and is shielded by the mounting base 3 at the time of suction to prevent water in the bathtub 1 from entering.

The air pipe connecting portion 21 has an opening / closing cock in the middle thereof.
A cock pipe 25 having 24 is detachably connected from below. The opening / closing cock 24 includes a cock fitting portion 26 integrally formed in the middle of the cock pipe 25 and opened in the lateral direction, and a cock fitted in the cock fitting portion 26 so as to be rotatable about the horizontal axis. It is composed of a main body 27 and a knob 28 for turning operation which is integrally formed on a side portion of the cock main body 27. The cock body 27 has a tubular shape, and an opening having substantially the same diameter as the inside of the cock tube 25 is opened, and the opening / closing cock 24 is opened and closed by the turning operation of the cock body 27. An air pipe 29 connected to the injection nozzle 11 is connected to the cock pipe 25 from below.

As shown in FIG. 2, the circulation pump 5 is fixed on the bottom plate 13 in the apparatus body 2 via a pair of mounting stays 30. The circulation pump 5 is provided with a suction port 31 at the lower center and a discharge port 32 at the side surface. The suction port 31 of the circulation pump 5 is connected to the water suction pipe connecting portion 17 via the suction side flow passage 33, and the discharge port 32 is connected to the discharge pipe connecting portion 18 via the discharge side flow passage 34.

The inlet side of the suction side flow path 33 is a water suction pipe connecting portion 17
Pipe joint 35 connected to the L-shaped pipe joint 35 and this pipe joint 35
And a connection hose 36 interposed between the outlet side and the suction port 31 side of the circulation pump 5.

The discharge side flow path 34 includes a rising pipe 38 connected to the discharge port 32 side of the circulation pump 5 via a connection hose 37 having an approximately L-shaped inlet side, and a rising pipe 38 connected via a connection hose 39. An inverted U-shaped connection pipe 40 connected to the upper end side, a heater holding cylinder 42 connected to the lower side of the connection pipe 40 via a connection hose 41, and integrally formed on the lower side of the heater holding cylinder 42. Further, it is composed of an inverted L-shaped falling pipe 44 connected to the discharge pipe connecting portion 18 via a connecting hose 43.

The rising pipe 38 is provided with a pressure switch 45 so as to detect the pressure of the water flowing therein, and the heater holding cylinder 42 is provided with a circulation pump 5 for the bath 1.
Heater to heat and keep water drawn from the water
6. A thermistor 46 for measuring the temperature of water and a thermostat 47 for controlling the water temperature are provided.

The connection pipe 40 of the discharge-side flow passage 34 has a part of its height so that the priming water can be filled from the circulation pump 5 through the suction-side flow passage 33 to the entire water-absorption pipe 7 side when the priming water is supplied. Is located at a position higher than the height of the circulation pump 5, the suction-side flow path 33, and the water suction pipe 7 at the uppermost position or more, and the L-shaped call is made on the circulation pump 5 side than the uppermost part of the connecting pipe 40. The water pipe 48 is integrally formed.

As shown in FIGS. 2 and 6, in the central portion of the upper lid 14, a water supply port 49 for supplying priming water from the circulation pump 5 to the water suction pipe 7 is surrounded by the water supply port 49 and integrated downward. A protruding tubular valve connecting portion 50 is formed. That is, the water supply port 49 is formed on the uppermost upper lid 14 of the apparatus main body 2, and the valve connection portion 50 is integrally formed on the upper lid 14 so as to project downward from the upper lid 14 and surround the water supply port 49.

A priming pipe 48 is connected to the valve connecting portion 50 via a second check valve 51 from below. The second check valve 51 is for enabling the supply of the priming water from the water supply port 49 to the circulation pump 5 during the supply of the priming water and for blocking the flow of the discharge water from the circulation pump 5 to the water supply port 49 side. .

As shown in FIGS. 6 and 7, the second check valve 51 includes an upper valve main body 52, a lower valve main body 53 fitted and bonded to the lower side of the upper valve main body 52, and an upper valve main body 52. Below the valve seat 54 of the main body 52, the valve body 55 is interposed between the valve main bodies. Fitting recesses 52a, 53a of annular grooves are formed on the upper side of the upper valve body 52 and the lower side of the lower valve body 53, respectively.
The valve connection portion 50 is fitted to 52a, and the priming pipe 48 is fitted to the fitting recess 53a of the lower valve body 53 via spacers 56 and 57, respectively.

As shown in FIGS. 6 and 7, the valve body 55 includes an annular portion 58 sandwiched between an outer peripheral portion of the valve seat 54 of the upper valve body 52 and an upper end of the lower valve body 53, and an opening / closing direction. A valve lid portion 60 which is integrally formed in the annular portion 58 via a vertically bendable connecting portion 59 and whose outer peripheral portion can be brought into contact with and separated from the lower surface of the valve seat 54. The water inlet 49 is an inlet portion 62 of the funnel 61 when priming water is supplied.
Can be inserted from above, and this water supply port 49
When the injection port portion 62 of the funnel 61 is inserted into the, the lower end portion of the second check valve 51 pushes the valve lid portion 60 downward.

In the water supply port 49, as shown in FIG. 6, a sealing plug 63 for sealing the water supply port 49 after supplying the priming water is provided with an upper lid.
It is inserted from above 14 so that it can be inserted and removed freely. The sealing plug 63 is made of urethane or another elastic material such as a soft synthetic resin material, and a large diameter portion 64 is integrally formed on the upper end side, and at the center of the shape surface side of the large diameter portion 64, A knob 65 is provided in the diameter direction.

The injection nozzle 11 is for injecting filtered water into the bath 1 and is arranged near the upper side of the filter 10. An air pipe 29 is connected to the injection nozzle 11, and when the opening / closing cock 24 is opened, the ejector nozzle 11 sucks the air on the side of the void 23 through the air pipe 29 by the ejector action to inject bubbles into the water in the bathtub 1. It has become.

The first check valve 9 is for preventing the backflow of water into the bath 1, and the water suction pipe 7 is connected to the filter 10 via the first check valve 9. There is. First check valve 9
Is configured to be upside down from the second check valve 51. That is, as shown in FIGS. 8 and 9, the first check valve 9 includes an upper valve body 66, a lower valve body 67 fitted and bonded to the lower side of the upper valve body 66, and a lower valve body 67. The valve seat 69 is formed on the upper side of the valve seat 68 and is interposed between the valve bodies. Fitting recesses 66a, 67a of annular grooves are formed on the upper side of the upper valve body 66 and the lower side of the lower valve body 67, respectively.
The water suction pipe 7 is attached to 66a, and the filter is inserted into the fitting recess 67a
Ten outlet connection parts 70 are fitted via spacers 71 and 72, respectively.

As shown in FIG. 9, the valve body 69 includes a lower valve body 67.
The annular portion 73 sandwiched between the outer peripheral portion of the valve seat 68 and the lower end of the upper valve main body 66, and the annular portion 73 that is integrally formed in the annular portion 73 via a connection portion 78 that is bendable up and down in the opening / closing direction. The outer peripheral part is the valve seat
A valve lid portion 79 that can be brought into contact with and separated from the upper surface of 68 is provided. In addition,
The valve bodies 55 and 69 of the check valves 9 and 51 are made of urethane or other elastic material such as soft synthetic resin material, and the valve lids 60 and 79 have the maximum thickness in the center. Valve seat
The 54 and 68 sides are flat and the opposite side is spherical.

The filter 10 is, as shown in FIG.
It is arranged in the corner of the bathtub 1 below 2 and is detachably connected to the first check valve 9 at the lower end of the water absorption pipe 7 from the lower side in water. The filter 10 is a hollow filter case.
An outflow chamber 81 and an inflow chamber 82 are provided above and below the inside of 80, and a fiber filtration layer 86 and a granular filtration layer 87 are provided between the outflow chamber 81 and the inflow chamber 82 via three cages 83, 84, 85. And are detachably loaded on the top and bottom.

The outlet case 70 is provided at the upper end of the filtration case 80,
Filter inlets 88 are respectively formed at the lower ends. The filter inlet 88 has a hair catcher for removing hair, dust, etc. in the water.
89 is detachably attached. The filter 10 is detachably attached to the inner wall of the bathtub 1 via the suction plate 90.

The granular filtration layer 87 is formed by filling a large number of granular filtration materials in a storage bag having water permeability and flexibility.
Far-infrared emitting ceramic balls, etc., which are formed by mixing barley stone, natural zeolite, alumina, sand, etc. in the form of powder into a filter material and sintering the mixture into a spherical shape of about 3 to 5 mm to form a porous material. Is used and the water is a granular filtration layer
When it passes through 87, it decomposes and absorbs fine dust, organic substances, and odors in water to remove it, and also elutes minerals to make water weakly alkaline.

The fiber filter layer 86 is for finally removing and filtering fine dust, organic matter, etc. that have passed through the granular filter layer 87, and the long long fibers are contained in a storage bag having water permeability and flexibility. They are packed together randomly so that the directions are not aligned. That is, the fiber filtration layer 86 constitutes a non-twisted string by bundling a large number of long fibers, for example, several tens to hundreds, without twisting, and forms a non-twisted string. After unwinding, the untwisted strings are randomly unraveled and packed in a storage bag so that they do not line up in the same direction.

The long fibers are in a crimped state such that they are bulky when bundled, and long chemical fibers having a low specific gravity, hydrophobicity and stretchability are used for the long fibers.
As long fibers, for example, the specific gravity is the lowest, hydrophobicity and stretchability are excellent, and abrasion resistance, chemical resistance, acid resistance,
A polypropylene fiber having excellent alkalinity, corrosion resistance and mold resistance is suitable.

Next, a usage state of this circulation type purification device will be described. The apparatus main body 2 including the circulation pump 5 and the heater 6 is fixed on a corner of the bathtub 1 via a mounting base 3. Then, a water absorption pipe 7 and a discharge pipe 8 are connected to the lower side of the apparatus main body 2, and the water absorption pipe 7 and the discharge pipe 8 are connected to a bathtub.
Position it at the corner of 1 and connect the filter 10 via the first check valve 9 to the lower end side of the water absorption pipe 7 and then until the level at which the filter 10 and the first check valve 9 are fully immersed. Fill the bathtub 1 with water. The filter 10 is fixed to the inner wall of the bath 1 via the suction plate 90.

Before starting the circulation pump 5, priming water is supplied from the circulation pump 5 through the water absorption pipe 7. At the time of this water supply, first, remove the sealing plug 63 of the upper lid 14 of the apparatus main body 2 to open the water supply port 49, and then prepare a water supply funnel 61 prepared in advance.
Insert the inlet portion 62 of the above into the water inlet 49. Then, the lower end portion of the funnel 61 pushes the valve lid portion 60 of the second check valve 51 downward, so that a gap is formed between the valve lid portion 60 and the valve seat 54, and the second check valve is formed.
51 is open.

Next, priming water is supplied from the water supply port 49 through the funnel 61. Then, the priming water is supplied from the water supply port 49 to the second check valve 5
1, the priming pipe 48, the rising pipe 38 to enter the circulation pump 5 side, from which the suction side flow path 33 and the water suction pipe
Filled throughout 7. In other words, since there is the first check valve 9 at the lower part of the water suction pipe 7 and the inverted U-shaped connection pipe 40 is higher than all of the good sides including the circulation pump 5, the water is supplied from the water supply port 49. When the water is supplied, the priming water is filled between the first check valve 9 and the connecting pipe 40 over the whole of the circulation pump 5, the suction side flow path 33, and the water suction pipe 7.

At this time, the inlet 62 of the funnel 61 is the second check valve.
Since the valve cover 60 of the valve 51 is spread downward and the second check valve 51 is in the open state, the priming pipe 48 is not water-sealed by the water from the funnel 61, and the circulation pump 5, the air in the suction side flow passage 33 and the water suction pipe 7 quickly escapes from the water supply port 49 to the outside through the priming pipe 48 and the second check valve 51.

When the priming water is filled to a predetermined level, the funnel 61 is pulled out from the water supply port 49. The valve lid portion 60 of the second check valve 51 is restored by the elasticity of the connecting portion 59 and comes into contact with the lower side of the valve seat 54,
Since the second check valve 51 returns to the closed state, the water supply port 49 has a sealing plug 63.
After inserting and sealing, start circulation pump 5 and enter the operating state.

When the circulation pump 5 is operated, the circulation pump 5
Filter the water in the bathtub 1, the first check valve 9, the water suction pipe 7,
After pumping to the device main body 2 side through the suction side flow path 33, the water is returned from the injection nozzle 11 to the water in the bath 1 through the discharge side flow path 34 and the discharge pipe 8, and the water in the bath 1 is circulated sequentially. Let
At this time, the second check valve 51 on the side of the water supply port 49 is pressurized by the discharge pressure from the circulation pump 5 and maintains the closed state, so that the circulating water may flow out from the water supply port 49 to the outside. Absent.

On the filter 10 side, the water in the bath 1 is filtered at the filter inlet.
From 88 to the inflow chamber 82, the granular filtration layer 8 in the filtration case 80
7. Flows to the first check valve 9 side through the fiber filter layer 86 and the outflow chamber 81, and removes or decomposes and absorbs dust and organic substances in water by the filtering action of the granular filter layer 87 and the fiber filter layer 86. Filter.

The water that has passed through the filter 10 is collected by the first check valve 9,
After being pumped to the inside of the device body 2 via the water absorption pipe 7,
From the circulation pump 5 to the heater holding cylinder 42 in the discharge side flow passage 34,
It is again discharged into the water in the bathtub 1 from the injection nozzle 11 via the discharge pipe 8. If the heater 6 is energized, the water can be heated by the heater 6 and kept at the set temperature.

According to this structure, the work of supplying the priming water before the operation of the circulation pump 5 can be easily performed. That is, when supplying the priming water, the upper lid of the device body 2
Remove the sealing plug 63 of 14 and insert the funnel 61 into the water supply port 49, supply the priming water from the water supply port 49 to the circulation pump 5 side through the funnel 61, and then close the water supply port 49 with the sealing plug 63. Therefore, despite the fact that the filter 10 is placed in the water of the bathtub 1 and the submersible filtration system is used, priming water can be supplied from the circulation pump 5 to the water suction pipe 7 side, and the water supply work is more It's very easy.

In particular, there is a first check valve 9 at the lower end of the water suction pipe 7, the connection pipe 40 of the discharge side flow passage 34 is above the circulation pump 5, the suction side flow passage 33 and the water suction pipe 7, Since the priming pipe 48 is connected to the circulation pump 5 side with respect to the uppermost part of the connecting pipe 40, the priming water can be reliably filled from the circulation pump 5 to the entire water absorption pipe 7 side.

Further, since the priming water can be supplied by inserting the funnel 61 into the water supply port 49, the water supply port 49 to which the funnel 61 can be inserted is provided in the upper lid 14 of the apparatus main body 2, and the priming water can be easily discharged. Since it is possible to supply water and the water supply port 49 is closed by the sealing plug 63, the appearance of the apparatus main body 2 side is not spoiled.

Further, there is a second check valve 51 in the middle of the priming pipe 48, and when the circulation pump 5 is operated after the priming water is supplied, the second check valve 51 is closed by the discharge pressure of the circulated water, so that the priming water is discharged. Even if you do not insert the sealing plug 63 into the water supply port 49 after water supply,
Circulation water can be prevented from leaking from the water supply port 49, and the circulation pump 5 can be started immediately after the priming water is supplied.

Further, the second check valve 51 is located near the water supply port 49, and when the funnel 61 is inserted into the water supply port 49, the valve cover 60 of the second check valve 51 can be pushed down by the funnel 61. Therefore, priming water can be smoothly supplied while bleeding air on the side of the circulation pump 5 from the second check valve 51.

Further, the check valves 9 and 51 are constituted by interposing valve bodies 55 and 69 made of an elastic material between the pair of valve bodies 52, 66 and 53, 67, and the valve bodies 55 and 69 are provided with a pair of check valves. Of the valve body 52,66, 53,67 between the annular part 58,73 and the connecting part that can bend in the opening and closing direction
Since valve seats 60 and 79 which are integrally formed in the annular parts 58 and 73 via 59 and 78 and can be brought into and out of contact with the valve seats 54 and 68 of the one valve body 52 and 67, are provided. Although the two check valves 9 and 51 are used, the structure of each check valve 9 and 51 is simple and can be implemented at low cost.

A sealing plug is provided at the water supply port 49 of the upper lid 14 of the apparatus body 2.
Even if the circulation pump 5 is left for a long time with the circulation pump 5 stopped, the water from the circulation pump 5 to the suction pipe 7 side is the first
It does not flow into the bathtub 1 from the check valve 9 side.

That is, when supplying the priming water, the first check valve 9 is closed, and even when the circulation pump 5 is stopped for a short time,
As long as the second check valve 51 is in the closed state, the water pumped to the device body 2 side is in equilibrium between the suction pipe 7 side and the discharge pipe 8 side, so the water from the circulation pump 5 to the suction pipe 7 side absorbs water. Tube 7, first
It does not flow back into the bathtub 1 via the check valve 9.

However, when the circulation pump 5 is stopped, the valve lid 79 of the first check valve 9 is slowly closed by the elastic force of the connecting portion 78, so that the gravity of the water in the water suction pipe 7 works downward, The gravity of the water in the discharge pipe 8 also acts downward. Therefore, the pressure below the second check valve 51 decreases, and the water supply port 49 side has a sealing plug.
If there is no 63, the valve lid portion 60 of the second check valve 51 is slightly opened downward against the elastic force of the connecting portion 59 due to the pressure decrease, and air is supplied from the water supply port 49 to the priming pipe 48 side. Water gradually enters, so if the circulation pump 5 is left for a long time with the pump stopped, the water inside the circulation pump 5 etc.
Will gradually flow into bathtub 1.

Even in such a case, if the water supply port 49 is sealed with the sealing plug 63, even if the pressure below the valve cover portion 60 of the second check valve 51 is reduced, the air is supplied from the water supply port 49. Is not entered,
The second check valve 51 is opened so that the water in the circulation pump 5 does not flow out of the water suction pipe 7 into the bath 1 and the circulation pump 5 immediately.
Can drive.

Further, since the outflow of water in the circulation pump 5 can be prevented by using the sealing plug 63, it becomes possible to use a simple structure for each of the check valves 9 and 51, and at the same time, each check valve can be used. It is not necessary to increase the restoring force of 9,51 in the closing direction. Therefore, when the priming water is supplied, the second check valve 51 can be easily opened by inserting the funnel 61 into the water supply port 49, and when the circulation pump 5 is operated, the first check valve 9 is replaced by the circulation pump 5. It does not become a big load of.

Moreover, since the water supply port 49 is provided in the upper lid 14 of the apparatus main body 2 and the sealing plug 63 is removably inserted into the water supply port 49 from above, the sealing structure of the water supply port 49 is simple. The sealing plug 63 can be easily inserted and removed. Secondly, below the sealing plug 63
There is a check valve 51, and this second check valve 51 is closed when the circulation pump 5 is in operation so that the discharge pressure of the circulation pump 5 does not act on the side of the sealing plug 63. Check valve 51
It suffices if it can be hermetically sealed so that air does not enter through the water supply port 49 even when the pressure on the lower side of the lower side falls. Therefore, it is not necessary to strongly push the sealing plug 63 into the water supply port 49, and also in this respect, the sealing plug 63 can be easily inserted and removed.

Further, since the underwater filtration system in which the filter 10 is immersed in the water in the bathtub 1 is adopted, the apparatus main body 2 side can be downsized, and the installation work etc. is easy. It should be noted that the present invention is not limited to this embodiment, and even if it is applied to, for example, a circulation filtration device of the pumping-up filtration type in which the filter 10 is housed in the device main body 2, the object of the present invention is sufficiently achieved. Can be achieved.

In the embodiment, the second check valve 51 is interposed between the priming pipe 48 and the valve connecting portion 50 of the upper lid 14, but
The check valve 51 may be interposed in the middle portion of the priming pipe 48. Of course, various design changes and modifications can be made within the scope of the claims of the present invention.

[0060]

According to the present invention as set forth in claim 1, the water in the bathtub 1 is circulated through the water suction pipe 7 and the discharge pipe 8 by the circulation pump 5, and the water in the bathtub 1 is purified by the filter 10. In the circulating purification system for baths,
Discharge side flow path 34 that connects the circulation pump 5 and the discharge pipe 8 with the first check valve 9 that blocks the reverse flow of water to the 1 side
Is configured to be higher than the circulation pump 5 and the water suction pipe 7, and a water supply port 49 for supplying the priming water to the circulation pump 5 and the water suction pipe 7 is provided on the circulation pump 5 side from the uppermost part of the discharge side flow path 34. Connection to enable circulation of priming water from the water supply port 49 to the circulation pump 5 when supplying the priming water and the circulation pump.
Since the second check valve 51 for blocking the flow of the discharge water from the water supply port 5 side to the water supply port 49 side is provided in the priming pipe 48, the filter 10 is installed in the bathtub 1
Regardless of the position of the filter 10, the priming water can be easily and reliably supplied to the circulation pump 5 and the water absorption pipe 7 regardless of the position of the water surface of the water, and the priming work can be performed more easily than before. Moreover, immediately after the priming water is supplied, the circulation pump 5
It is possible to drive.

According to the invention described in claim 2, in the invention described in claim 1, since the sealing plug 63 for sealing the water supply port 49 is provided, the circulation pump 5 is stopped for a long time. Also in this case, water can be prevented from flowing out in the circulation pump 5, and the check valves 9 and 51 can have a simple structure. Further, since the sealing plug 63 and the second check valve 51 are combined, the sealing plug 63 is only required to seal the water supply port 49.

According to the present invention as set forth in claim 3, in the present invention as set forth in claim 1 or 2, the circulation pump 5 and the priming pipe 48 are housed in the device body 2 and the device body 2
Since the water supply port 49 is provided so as to open on the upper surface side of the device, and the sealing plug 63 is inserted into the water supply port 49 from the upper side of the device body 2 in a removable manner, the appearance of the device body 2 side can be improved. At the same time, the sealing plug 63 can be easily inserted and removed.

According to the present invention as set forth in claim 4, in the present invention as set forth in any one of claims 1 to 3, the funnel 61 can be inserted from the water supply port 49, and the funnel 61 is provided at the water supply port 49. Since the second check valve 51 is provided in the vicinity of the water supply port 49 so that the second check valve 51 will open when inserted, even if the water supply port 49 is made small, the circulation pump 5 side can be easily primed. Water can be supplied, and furthermore, priming water can be supplied smoothly while bleeding air on the side of the circulation pump 5 from the second check valve 51.

According to the fifth aspect of the present invention, in the present invention according to any one of the first to fourth aspects, an elastic material is provided between the pair of fitting valve bodies 52, 66, 53, 67. Valve body 5
The check valves 9 and 51 are formed by interposing 5,69, and the valve bodies 55 and 69 are annular portions 58 and 73 sandwiched between the pair of valve bodies 52, 66 and 53 and 67.
And a valve lid that is integrally formed in the annular portion 58,73 via a connecting portion 59,78 that is bendable in the opening / closing direction and that can be brought into and out of contact with the valve seat 54,68 of the one valve body 52,67. Since the parts 60 and 79 are provided, the structure of the check valves 9 and 51 can be simplified and can be implemented at low cost.

According to a sixth aspect of the present invention, in the present invention according to any one of the first to fifth aspects, the apparatus main body 2
The upper lid 14 is provided with a water supply port 49, and a valve connecting portion 50 projecting downward from the upper lid 14 is integrally formed so as to surround the water supplying opening 49, and the second check valve 51 is provided at the valve connecting portion 50. Since the second check valve 51 is connected from the side, the second check valve 51 can be securely fixed with a simple structure and the work such as assembling is easy, and the funnel 61 is inserted into the water supply port 49 to allow the second check valve 51 to be inserted. Can be opened and closed reliably.

According to the present invention as set forth in claim 7, in the present invention as set forth in any one of claims 1 to 6, a filter 10 is connected to a lower end portion of the water absorption pipe 7, and the filter 10 is connected to a bathtub. Since it is placed in water 1, the device body 2 side can be easily and miniaturized.

[Brief description of the drawings]

FIG. 1 is a schematic view of a circulation purifying apparatus for a bath showing one embodiment of the present invention.

FIG. 2 is a cross-sectional view of the inside of the apparatus body showing an embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a sectional view taken along line CC of FIG. 4;

FIG. 6 is an enlarged vertical sectional view of a second check valve portion showing the embodiment of the present invention.

FIG. 7 is a sectional view taken along line DD of FIG. 6;

FIG. 8 is an enlarged vertical sectional view of a first check valve portion showing an embodiment of the present invention.

FIG. 9 is a sectional view taken along line EE of FIG. 8;

[Explanation of symbols]

 1 Bathtub 2 Device body 5 Circulation pump 7 Water suction pipe 8 Discharge pipe 9 First check valve 10 Filter 14 Top lid 34 Discharge side flow passage 48 Priming pipe 49 Water intake 50 Valve connection 51 Second check valve 52,66 Above Valve body 53,67 Lower valve body 54,68 Valve seat 55,69 Valve body 58,73 Annular part 59,78 Connection part 60,79 Valve lid part 61 Funnel 63 Sealing plug

Claims (7)

[Claims] 1. The water in the bathtub (1) is circulated through the water suction pipe (7) and the discharge pipe (8) by the circulation pump (5), and the water in the bathtub (1) is purified by the filter (10). In the circulation type purification device for a bath, the first check valve (9) for preventing backflow of water to the bathtub (1) side is installed in the water suction pipe (7), and the circulation pump (5) and the discharge are provided. The discharge side flow path (34) connecting the pipe (8) is constructed higher than the circulation pump (5) and the water absorption pipe (7), and the circulation pump (5) is higher than the top of the discharge side flow path (34). On the side, the water supply port (49) for supplying priming water to the circulation pump (5) and the water suction pipe (7) is connected via the priming pipe (48), and the water supply port is provided when priming water is supplied.
The second check valve (51) that allows the priming water from the (49) to the circulation pump (5) and blocks the flow of discharge water from the circulation pump (5) to the water supply port (49) side is provided with the priming pipe. A circulating purifying device for a bath, which is provided in (48). 2. A sealing plug (63) for sealing the water supply port (49).
The circulating purifying apparatus for a bath according to claim 1, further comprising: 3. The circulation pump (5) and the priming pipe (48) are housed in the device body (2), and a water supply port (49) is provided so as to open on the upper surface side of the device body (2) to supply water. The circulating purifying apparatus for bath according to claim 1 or 2, wherein a sealing plug (63) is removably inserted into the mouth (49) from the upper side of the apparatus body (2). 4. A second non-return valve when the funnel (61) is insertable from the water supply port (49) and the funnel (61) is inserted into the water supply port (49).
The circulation type purification apparatus for a bath according to any one of claims 1 to 3, wherein a second check valve (51) is provided in the vicinity of the water supply port (49) so that the (51) is opened. . 5. A pair of mating valve bodies (52) (66), (53) (6)
The check valves (9) and (51) are formed by interposing the valve bodies (55) and (69) made of elastic material between the valve body (7) and the valve bodies (55) and (69). Five
2) The annular portion (58) (73) sandwiched between (66), (53) and (67) and the annular portion (58) via the connecting portions (59) and (78) that are bendable in the opening / closing direction.
(73) a valve lid (60) (79) integrally formed in the valve body (52) (67) and capable of coming into contact with and separating from the valve seats (54) (68) A circulating purifying device for a bath according to any one of claims 1 to 4. 6. The water supply port (49) is provided on the upper lid (14) of the device body (2), and the valve connection portion (50) projecting downward from the upper lid (14) surrounds the water supply port (49). 6. The circulation type purification for a bath according to claim 1, wherein the second check valve (51) is integrally formed with the valve connection portion (50) from the lower side. apparatus. 7. The filter (10) is connected to the lower end of the water absorption pipe (7), and the filter (10) is placed in the water of the bath (1). The circulating purification apparatus for bath according to any one of the above.