JP3041072U - Automatic open / close valve - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an automatic opening / closing valve that is detachable from a liquid supply port and has a simple structure that is relatively small and that can open and close reliably. SOLUTION: An automatic opening / closing valve 1 has a liquid supply port 2 to which a cylindrical body 4 is detachably fixed, a water guiding portion 5 is extended downward, and a valve seat 6 is formed on the upper surface thereof. The valve body 7 has a shape to be seated and closed by the pressure of fluid, and a supporting rod 8 is provided on the lower surface so as to project. A lever member 9 is attached to this lower end, and the suspension member 10 is locked by inserting the lever member 9 through the opening 5a of the water guiding portion 5. Hanging material 10 is a container 1 that can be attached and removed at the lower end.
1 is supported, and the liquid to be supplied is housed therein to form a weight.
When the liquid is contained, the weight of the weight keeps the valve open, but when the weight is submerged in the liquid, the force for pushing up the support rod 8 disappears, and the valve body 7 is pressed by the fluid pressure to be closed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a device which is attached to a liquid supply port such as a bathtub or a water receiving tank and automatically opens and closes a valve by raising or lowering the water level, and more particularly, to an automatic opening / closing valve which uses the buoyancy of a float.

[0002]

[Prior art]

 Conventionally, a ball plug called a so-called ball tap has been generally used for a liquid supply port of a water receiving tank or the like, and its mechanism is to attach a floating ball formed of plastic or copper plate to the tip of the arm. The buoyancy lifted the support rod linked to the arm to open and close the valve.

Further, as an automatic water supply device for a bathtub, there is an overflow prevention device as described in, for example, Japanese Utility Model Laid-Open No. 57-171476. In this device, the outlet for supplying hot water to the bathtub can be opened and closed by a solenoid valve, and when the water level in the bathtub reaches the set water level, the valve is operated by a capacitive proximity switch provided on the outer wall surface of the bathtub. The water supply was stopped to prevent overflow.

[0004]

[Problems to be solved by the device]

 However, the floating ball used in the conventional ball-tap type automatic opening / closing valve raises the supporting rod with the required weight to open the valve, and ascends due to buoyancy while lowering the supporting rod with the upward load to close the valve. Because of this structure, there is a drawback that the valve cannot be opened or closed without fail unless it is a relatively large sphere having a large buoyancy. Moreover, such a ball tap type automatic on-off valve was not suitable for the water supply port of the bathtub in the home because it was fixedly attached to various tanks.

On the other hand, an overflow prevention device using a solenoid valve has a drawback that the structure is complicated, and since each member is incorporated in a tank or a pipe, it cannot be diverted and the price becomes expensive. It was.

The present invention solves the above problems and is an automatic opening / closing valve that can be attached to and detached from a liquid supply port, is relatively small, and can be opened and closed reliably, has a simple structure, and can be manufactured at low cost. The purpose is to provide an automatic on-off valve that can be used.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the automatic opening / closing valve of the present invention has a tubular body that extends downwardly with a water guiding portion and is detachably attached to a liquid supply port, and is seated on the valve seat of this tubular body with fluid pressure. A valve body with a supporting rod protruding from the lower surface, a lever member that engages one end with the lower end of the supporting rod and inserts an opening provided on the side surface of the water guiding portion, and locks the suspending member at the other end, and the suspending member. It is a weight that is supported at the lower end and has the same unit volume weight as the specific gravity of the liquid to be supplied.Before the buoyancy force is applied, the valve body is pushed up through the lever member to open the valve. It is characterized in that it is provided with a heavy weight that lowers and closes the valve body, and it is desirable that the weight is a container that accommodates the liquid so that it can be taken in and out and that can be attached to and detached from the suspension member.

The lever member moves up and down the support rod with the load of the weight with the opening as a fulcrum. When the weight is submerged in the liquid, almost no load acts, so the valve body is pressed against the valve seat by the fluid pressure and is closed. In the case of a weight that stores liquid in the container, even if the container itself is lightweight, the required weight can be obtained by putting the liquid into the container and suspending it when the liquid is supplied. It can also be stored.

[0009]

[Embodiment of the invention]

 Next, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a sectional view of the automatic opening / closing valve when the valve is opened, and FIG. 2 is a sectional view of the same when the valve is closed. The automatic opening / closing valve 1 has a structure in which a cylinder 4 is fixed to a mounting member 3 fitted to a liquid supply port 2 such as a faucet. Both the cylinder 4 and the mounting member 3 can be detached from the liquid supply port 2. is there. The tubular body 4 has a water guiding portion 5 extending downward and a valve seat 6 formed on the upper surface thereof. The valve body 7 has a shape to be seated and closed by the pressure of fluid, and a support rod 8 is provided on the lower surface so as to project.

One end of a lever member 9 is swingably attached to the lower end of the support rod 8, and an opening 5 a provided on a side surface of the water guiding part 5 is inserted to lock the suspension member 10 at the other end. The hanging member 10 has a detachable container 11 supported at its lower end, and accommodates a liquid to be supplied therein to form a weight.

When the liquid is stored in this way, the lever member 9 pushes up the support rod 8 with the opening 5a as a fulcrum by the weight of the weight and maintains the valve open state as shown in FIG. When the liquid surface rises and the weight is submerged in the liquid, the load acting on the lever member 9 is only the weight of the suspending member 10 and the container 11, and the force for pushing up the supporting rod 8 hardly acts. Therefore, the valve body 7 is pressed against the valve seat 6 by the fluid pressure, and is closed as shown in FIG.

After closing the valve, the liquid in the container 11 can be discarded and removed from the suspending member 10. Further, the automatic opening / closing valve 1 itself can be removed from the liquid supply port 2 by tightening a main plug (not shown). The container 11 may be an empty can or the like, but the container 11 is not limited to the container as long as it has a unit volume weight equivalent to the specific gravity of the liquid and has a required weight, for example, a structure in which a fruit or the like is hung. Is.

Further, when the water guiding portion 5 is bent toward the side surface of the water tank in the direction opposite to the direction in which the weight is suspended, the liquid surface can be prevented from waving, so that the valve can be smoothly closed. Further, since it also has the effect of circulating the liquid in the tank, it also prevents dead water. In this way, the automatic opening / closing valve 1 can be expected to have the same effect as a conventional ball tap even with a simple structure, and can be easily attached and detached, and household items can be widely applied to the weight. Can also be used to prevent overflow. Further, it can be applied to a water receiving tank and various tanks.

[0014]

[Effect of the invention]

 As described above, the automatic opening / closing valve of the present invention has a valve body that is closed by fluid pressure and a weight that has a unit volume weight equivalent to the specific gravity of liquid, so it is a small weight and has a simple structure. Even if there is, the valve can be opened and closed reliably. Further, it can be applied to a bathtub or the like by having a structure that can be attached to and detached from the liquid supply port.

Further, in the automatic on-off valve according to the second aspect, since the container which can accommodate the liquid in and out and which can be attached to and detached from the suspending member is a weight, after the valve is closed, the liquid in the container is discarded and removed from the suspending member. This makes it easier to handle.

[0016]

[Brief description of the drawings]

FIG. 1 is a sectional view of an automatic opening / closing valve when it is opened.

FIG. 2 is a sectional view of the automatic on-off valve when the valve is closed.

[Explanation of symbols]

 1 Automatic Open / Close Valve 2 Liquid Supply Port 4 Cylindrical Body 5 Water Transfer Section 5a Opening 6 Valve Seat 7 Valve Body 8 Support Rod 9 Lever Member 10 Suspension Material 11 Container

Claims (2)

[Utility model registration claims] 1. A tubular body having a water guiding portion extending downward and detachably attached to a liquid supply port, and a valve body having a valve rod seated on a valve seat of the tubular body and having a support rod projecting from a lower surface thereof. And a lever member that engages one end with the lower end of the support rod and passes through an opening provided on the side surface of the water guiding portion and locks the suspending material at the other end, and a weight that is a fishing rod supported at the lower end of the suspending material. Has a unit volume weight equivalent to the specific gravity of the liquid
Before the action of buoyancy, push up the valve body through the lever member to open the valve,
An automatic opening / closing valve, which is equipped with a weight of weight that lowers and closes the valve body by fluid pressure when buoyancy acts. 2. The weight is a container capable of accommodating the liquid so that the liquid can come in and out, and detachable from the hanging material.
The automatic open / close valve described.