JPS6054547B2 - Check valve with directional injector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a check valve having a directional iso-sector used for blowing gas such as air into a bathtub to stir hot water in the bathtub.

It is known to blow air into hot water in a bathtub to create an agitation effect that produces a massage effect. Now, the known devices shown in the technical literature are not sufficient, and some are even impossible to manufacture in practice.

In fact, there are devices that can be applied to bathtubs with double bottoms, but they cannot be put to practical use. Furthermore, in other devices, the problem of sealing the injector mounting portion has not been solved. An object of the present invention is to provide a check valve having a directional injector that provides a good seal, is reliable, allows automatic cleaning of the valve body and seat surface, and allows easy change of injection direction. .

The object is to provide a sleeve provided with a collar that penetrates the wall of the bathtub and is attached to the inner wall surface of the bathtub via a sealing member, and a head that is rotatably fitted into the sleeve and covers the collar at the inner end of the bathtub. an injector portion having a hollow shaft having a hollow shaft and an air jet hole formed in the head portion of the hollow shaft in an obliquely upward direction so as to communicate with the hollow portion of the hollow shaft; and an injector portion that is screwed onto the outer end of the bathtub of the sleeve. A hollow main body is attached to the outer wall surface of the bathtub via a sealing member, and a series of air passages that are fitted into the inner side of the main body and communicate with the air jet hole together with the hollow parts of the main body and the hollow shaft are formed in the hollow body. A valve seat having a conically shaped seat surface at an end close to the shaft, and a link-shaped circle supported substantially at the center of the valve seat so as to be movable in the direction of air flow and engaged with the seat surface of the valve seat. It consists of a valve body provided with an annular seal and a check valve portion equipped with a spring that biases the valve body so that the toric seal of the valve body presses the valve seat surface, and the sleeve This is achieved by a check valve having a directional injector that is screwed into the main body to fix the injector part and the check valve part in a fluid-tight manner to the inner and outer walls of the bathtub.

According to another feature of the invention, the spring biasing the valve body is a coil spring disposed around a guide rod movably supporting the valve body on the valve seat, and one end of the coil spring is attached to the valve seat. The other ends of the guide rods are respectively supported by heads provided at the ends of the guide rods. According to a further feature of the invention, the body consists of two parts connected by screws, and the valve seat is held between collars on each said part.

According to yet another feature of the invention, the collar of the sleeve and the head of the hollow shaft abut each other, and an annular groove is provided on the outer periphery of the hollow shaft at a position corresponding to the outer end of the sleeve tub,
A toroidal seal mounted in the groove abuts the outer end of the sleeve. Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the check valve of the present invention comprises a check valve part attached to the outer wall of a bathtub, and an injector part screwed to the check valve part and attached to the inner wall of the bathtub. The check valve part has a body consisting of two body parts 1 and 2, one body part 1 being provided with an air inlet orifice 11 and the other body part 2 being provided with an air outlet orifice 21.

The two body parts 1 and 2 are connected by a screw 3, the end of the body part 2 being connected to the inner shoulder 1 of the body part 1.

It comes into contact with the main body part 1 at a connecting surface 4 corresponding to the bottom surface of the main body part 1 . A valve seat 5 is arranged inside the main body part 2, and this is arranged in the main body part 1.
Inner shoulder part 1. and the inner seat part 2 of the main body part 2.

grip between. A groove 51 is provided on the outer periphery of the valve seat 5 at the end on the connecting surface 4 side, and the toric seal 6 is housed in the groove 51. Toroidal seal 6 connects body portions 1 and 2 and valve seat 5 to form a seal between body portions 1 and 2 and to provide a seal of body portions 1 and 2, respectively, to valve seat 5.
comes into contact with. A seat surface 5 formed in a conical shape is provided at the end of the valve seat 5 on the side closer to the bathtub.

A torus seal 7, which will be described later, engages with this surface.
The valve body consists of a disk 8 having an annular groove 81 on its outer periphery and this disk 8.
The guide rod 9 is screwed almost perpendicularly into the guide rod 9, a toric seal 7 is fitted into the annular groove 81, and a head 91 is provided at the end of the guide rod 9.

As shown in FIG. 2, a member 53 having orifices 54 and 55 is provided at the end of the valve seat 5 opposite to the seat surface 52.

The orifice 54 opens approximately at the center of the valve seat 5 and slidably supports the guide rod 9 described above. Another orifice 55 is for allowing passage of compressed air. A coil spring 10 is arranged between the member 53 and the guide rod head 91, thereby keeping the toroidal seal 7 always on the seat surface 5. to press.
The injector part includes a sleeve 11 that penetrates the wall 100 of the bathtub and has a collar 12 at the inner end of the bathtub, and this sleeve 1
The collar 12 is covered with a head 14 provided at the inner end of the tub. The collar 12 is housed in an annular groove 141 provided inside the head 14.

Since the depth of the annular groove 141 is smaller than the thickness of the collar 12, the lower surface of the head 14 does not come into contact with the inner wall surface of the bathtub.
The head 14 can freely pivot. The head 14 has an annular groove 141
contacts the top surface of the collar 12 through the bottom of the collar 12.

To facilitate the pivoting movement of the head 14, a chamfer 121 is provided at the side end of the collar 12. An annular groove 15 is provided at the other end of the hollow shaft 13.

The annular groove 15 is provided at a position that the free end of the sleeve 11 reaches when the head 14 abuts against the collar 12. A toroidal seal 16 accommodated in the annular groove 15 rests against the free end of the sleeve 11 in order to seal without interfering with the pivoting movement of the head 14. The periphery of the head 14 is notched to facilitate handling. The sleeve 11 passes through an opening provided in the wall 100 of the bathtub, and the collar 12
When screwed in and tightened, the action of the screw 111 causes the inner side of the collar 12 and the upper end of the main body portion 2 to close together with the sealing member 20.
, 20, the inside and outside of the wall 100 of the bathtub are fluid-tightly tightened.

The head 14 is provided with an air outlet 17.

The air outlet 17 communicates with the hole in the hollow shaft 13 and is inclined with respect to the axis X-X'' of the hole. Thus, when the head 14 is rotated, compressed air is injected into the bathtub. Next, the operation of this check valve will be explained.

The compressed air that enters the main body part 1 from the air inlet orifice 11 pushes up the disc 8 against the elastic force of the coil spring 10, and the compressed air passes between the toroidal seal 7 and the seat surface 52 and is pushed up into the main body part 1. It is injected into the melt tank through the part 2, the hollow shaft 13 and the air jet hole 17. The spray direction is towards the head 14 of the bather.
It can be adjusted by rotating it in the desired direction. Conversely, if compressed air is not introduced into the orifice 11, the action of the coil spring 10 causes the toroidal seal 7 to close to the seat surface 5.
Pressing 2.

Therefore, hot water in the bathtub does not flow back from the outlet orifice 21 to the inlet orifice 11. When the valve is closed, the toroidal seal 7 progressively abuts against the conically shaped seat surface 52, so that foreign matter adhering to the seat surface 52 is pushed back into the body part 1. Therefore, the seat surface 52 is automatically cleaned. It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

As described above, the present invention exhibits the following excellent effects. (1) The injector equipped with a check valve allows air to be blown into the bathtub, and since the direction of the jet stream ejected by the injector can be changed, the hot water in the bathtub can be stirred over a wide range.

(11) The check valve is equipped with a spring that constantly presses the valve body against the valve seat, so the operation is quick and reliable, and the hot water inside the bathtub is connected to the compressed air pipe system outside the bathtub. There is no risk of backflow.

(As a result of paragraph (1i), only compressed air is injected when the injector is activated.

In other words, water that has flowed back from the bathtub into the compressed air pipe system and accumulated and become contaminated in this system is not sprayed into the bathtub again, so the hot water in the bathtub does not get dirty and is sanitary. (Iv) Since the injector part and the check valve part are fixed to the inside and outside of the bathtub via the sealing member, hot water in the bathtub will not leak.

[Brief explanation of the drawing]

1 and 2 show embodiments of the present invention, FIG. 1 is a cutaway view of the present check valve with the left half in the check valve open state and the right half in the check valve closed state; The diagram is A-A in Figure 1.
FIG.

Claims (1)

[Scope of Claims] 1. A sleeve provided with a collar that penetrates the wall of the bathtub and is attached to the inner wall surface of the bathtub via a sealing member, and a head that is rotatably fitted into the sleeve and covers the collar at the inner end of the bathtub. an injector portion formed by drilling an air jet hole diagonally upward in the hollow shaft head so as to communicate with the hollow portion of the hollow shaft; and an outer end portion of the bathtub of the sleeve. A hollow body that is screwed onto the body and attached to the outer wall surface of the bathtub via a sealing member, and a series of air flow paths that are fitted inside the body and communicate with the air jet holes together with the hollow parts of the body and the hollow shaft. a valve seat having a conically formed seat surface at an end close to the hollow shaft; and a ring supported substantially at the center of the valve seat so as to be movable in the direction of airflow and engaged with the seat surface of the valve seat. The check valve portion includes a valve body provided with a toroidal seal of the shape of a shape, and a spring that biases the valve body so that the toric seal of the valve body presses the valve seat surface, Screw the sleeve into the main body and insert the injector part and check valve part into the bathtub.
A check valve having a directional injector, characterized in that it is liquid-tightly fixed to an outer wall. 2. The spring that biases the valve body is a compression spring arranged around a guide rod that movably supports the valve body on the valve seat, and one end of the compression spring is attached to the valve seat and the other end is attached to the end of the guide rod. A check valve having a directional injector according to claim 1, each supported by a head provided in the section. 3. Directionality according to claim 1 or 2, wherein the main body consists of two parts connected by screws, and the valve seat is held between collars provided on each part. Check valve with injector. 4. A groove is provided on the outer circumferential surface of the end of the valve seat farthest from the hollow shaft, and the toroidal seal attached to the groove is provided at the level of the joining surface of the two parts constituting the main body. A check valve having a directional injector according to scope 3. 5. The collar of the sleeve and the head of the hollow shaft are in contact with each other, and an annular groove is provided on the outer periphery of the hollow shaft at a position corresponding to the outer end of the sleeve bathtub, and the toroidal seal attached to the groove is attached to the sleeve. A check valve having a directional injector as claimed in claim 1 in contact with an outer end of a bathtub.