JPS607148B2 - pneumatic faucet - Google Patents

Description

[Detailed Description of the Invention] The present invention can be attached to water cypresses etc. that have been commonly used in the past.
Air is sent to the water supply control section by pressing the pressure section of the pneumatic device, which consists of the pressure supply section and the water supply control section, with a part of your body, such as stepping on it with your foot, and the air sent from this pressure section is sent to the water supply control section. This relates to a pneumatic faucet configured to supply water from a water outlet by flowing into the air sac, expanding the air sac, and pushing open a lever that closes a drainage hole provided in a cylinder in a casing.

Most of the water faucets commonly used in the past have a cock for discharging water that is installed above the water outlet, such as at the top of the valve valve, so it is difficult to wash your hands with soap, for example. Once the water is turned on, such as when washing, the water is not turned off until the hands are finished washing, which not only wastes water and is uneconomical, but also causes water shortages. There are hygienic problems, such as having to operate the cock before washing, which is unhygienic if the cock is not washed at the same time as the hands.Additionally, the operation of turning the cock is not recommended for people with manual disabilities. There were disadvantages such as difficulty in

In addition, conventional water faucets, especially household water faucets, are not equipped with check valves, so if water is being supplied to an electric washing machine, for example, if the water is cut off while the end of the hose remains in the washing liquid, the washing machine will be washed. There is also the disadvantage that sewage inside the aircraft can flow back into the water pipes through the water tap, causing unsanitary accidents.Furthermore, the packing provided at the bottom of the valve cover to prevent water leakage is unnecessary when the cock is rotated. They also had the disadvantage that they wore out if they were forced to close tightly, causing water to leak prematurely. The pneumatic faucet of the present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will now be described with reference to the drawings.

1 is a picture of a commonly used water tap with a handle 3 attached to the upper end of a valve stem 2, and the water outlet 4 of the tap 1 is equipped with pneumatic pressure by an appropriate conventional means in the same way as when installing a normal adjustable faucet. A faucet 5 is connected.

In the embodiment shown in FIG. 1, an annular outlet 8 is formed around the inlet 6 which is closed at the tip of the inlet channel A by enclosing its opening edge 7 to form an annular outlet 8 which is suitable for the outlet channel B. A peripheral edge 9 is provided on its outer periphery so as to be on the same plane as the opening edge 7, and a drainage hole 11 is bored in the bottom surface 1, surrounding the outer peripheral edge 9 of the outlet 8 in the direction of the entrance, with the inlet □6 as the center. A pressurizing cylinder 12 is installed, a water guide hole 14 is bored in the center of the face 13 in the inner chamber, and a piston valve 16 with a small check valve 15 arranged therein is slid toward the inlet 6. The valve head surface 13 of the cylinder 12 is freely arranged so that when it comes into contact with the inlet 6, the inner circumferential edge of the outlet 8, that is, the closing green 7 and the outer circumferential green 9 of the inlet 6 are brought into close pressure contact. The inner chamber has the inlet 6 side connected to the front pressure chamber C bottom surface 10 by the head surface 13 of the piston valve 16.
The drain hole 11 side is divided into a back pressure chamber D. Reference numeral 17 denotes a spring provided to always urge the piston valve 16 toward the top wall of the cylinder 12, and the spring 17 is small enough to lightly support the piston valve 16 against the top wall of the cylinder 12. Although there is usually little need for this, it is useful when the pressure or flow rate of the water to be controlled is so small that the piston valve 16 cannot be moved upward, and in backflow prevention operations.

Reference numeral 18 denotes a lever that is freely connected to one end of the bottom surface 10 of the cylinder 12 and is always biased in a direction in contact with the bottom surface 10 by a biasing member 19. The drain hole 11 thus formed is opened and closed in accordance with the key movement of the lever 18.

As this biasing member 19, a spring is used in the embodiment shown in FIG. In the embodiment shown in FIG. 2, a connecting end 21 between the lever 18 and the bottom surface 10 serves as a biasing member 19 that urges the lever 18 in a direction in which it comes into contact with the bottom surface 10 of the cylinder 12 in FIG. In contrast to the case where a spring was used in the first embodiment, a bellows which expands and contracts according to temperature changes is used, and each part of the process is indicated by the same symbol as the corresponding part in FIG.

A screw hole is provided in the center of the bottom cover 22, a temperature adjustment screw 23 is screwed into the screw hole, and a bellows 25 whose lower end is fixed to the case 24 is fixed to the upper end of the temperature adjustment screw 23. The lever 18 is pushed up at the upper end of the row 25 so that the lever 18 and the bottom surface 10 come into contact with each other.

On the other hand, the pneumatic device 26 consists of a pressure sending section 27 and a water supply control section 28 connected to the section 27 through a vent pipe, and the pressure sending section 27 can be any device as long as it has a pressure sending function. often,
In this embodiment, as shown in FIG. 3, a bellows 32 that expands and contracts with the elastic force of a spring 30 and forms an air chamber 31 therein is provided upright on the case 29, and a second bellows 32 is provided on the case 29.
A push lid 34 that returns to its original position by the elastic force of a spring 33 is placed on the air chamber 31, and a ventilation pipe 35 is connected to the air chamber 31.

The water supply control unit 28 has a U-shaped air pouch 36 which is provided at the end of the vent pipe 35 and is made of a rubber or European resin material that is expandable and has appropriate mechanical strength, axis resistance, and heat resistance. The water supply control section 28 is comprised of a flange 37 and is located between the bottom surface 10 of the cylinder 12 and the lever 18. 38 is the water supply control section 28
A notch 39 is provided in the ventilation pipe 35 to insert the flange 37, and 39 is a flexible pipe for discharging water.

Next, the operation of the pneumatic faucet of the present invention will be explained based on the above embodiment.

First, the handle 3 of the water faucet 1 serving as the main tap is turned to keep the water faucet 1 open at all times. Therefore, when the water entering from the inflow path A reaches the inlet 6, the water supply pressure increases to the piston valve 1.
6 is pushed down and flows into the front pressure chamber C in the cylinder 12, and a part of it flows into the back pressure chamber ○ from the water introduction hole 14.
The water flowing into the prepressure chamber C flows through the water inlet 8 provided at the upper part of the cylinder portion 11 to reach the outflow path B, and is discharged to the outside through the flexible pipe 39. On the other hand, if you lightly press the push cover 34 of the pressure sending part 27 of the air pressure device 26 with your foot, the bellows 32
contracts and sends out the air in the air chamber 31 to the ventilation pipe 35. The air sent to the ventilation pipe 35 passes through the ventilation pipe 35 into the air sac 36 of the water supply control unit 28, and expands the air sac 36. As the air sac 36 expands, the lever 18 overcomes the elastic force of the biasing member 19, that is, the spring, and the lever 18 moves firmly using the connecting end 21 with the cylinder bottom surface 10 as a fulcrum. 1 Drill a drainage hole 1
1 is opened, the water in the back pressure chamber ○ is discharged to the outflow path B, and the water is merged with the water that has reached the outflow path B from the front pressure chamber C through the water inlet 8, and is discharged to the outside through the snake pipe 39. Water is sprayed. With the drain hole 11 open in this way, the pressure in the back pressure chamber D cannot rise, so the piston valve 16 remains pressed down by the water supply pressure, and water discharge continues. Next, the push Z applied to the pressure sending part 27 of the air pressure device 26 is
When the force is removed, the push lid 34 returns to its original position due to the elastic force of the spring 33, and at the same time, the bellows 32 also expands due to the elastic force of the spring 30.

As the air from the pneumatic device 26 is drawn into the air chamber 31 in the bellows 32, the air that was expanding the air sac 36 of the water supply control unit 28 is also drawn in, causing the air sac 36 to contract. As the air sac 36 contracts, the lever 18 moves toward the bottom surface 10 by the elastic force of the biasing member 19, that is, the spring, provided at the connection end 21 with the bottom surface 10, and the supporting valve 20 of the lever 18 moves toward the bottom surface 10. The water drainage hole 11 is closed. The water flowing into the back pressure chamber D from the water introduction hole 14 has no outlet because the water drain hole 11 is blocked, and therefore the pressure inside the back pressure chamber D increases rapidly, causing the spring 17 to spring. In response to the force, the piston valve 16 slides upward in the figure. When the piston valve 16 comes into contact with the top of the cylinder 12 and stops rising, the head surface 13 of the piston valve 16 closes the water inlet 8, so that the water that has flowed into the cylinder 12 flows out to the outlet B. Since there is no water, water discharge will be stopped. The reason why the piston valve 16 rises upward in the figure by closing the drain hole 11 in this way is due to the respective pressure receiving areas of the front pressure chamber C side and the back pressure chamber D side of the head surface 13 of the piston valve 16. are the same, but on the back pressure chamber D side, the pressure of the water flowing in from the water inlet 14 is applied equally to each part as is clear from Pascal's principle, whereas on the front pressure chamber C side, the pressure of the water flowing in from the water inlet 8 is applied equally to each part. flows out, the pressure decreases, and therefore, no matter how the water supply pressure changes, the force pushing up the piston valve 16 from the back pressure chamber D side always exceeds the force pushing down the piston valve 16 with the water supply pressure.
When water is to be sprayed continuously for a long time, or when the pressure sending part 27 of the pneumatic device 26
If you want to discharge water without pressing the water, turn the notch 38 fixed to the ventilation pipe 35 by 9 degrees, rotate the collar 37 of the water supply control unit 28, and push the bar 18 with the collar 37 to drain the water. If the hole 11 is kept open at all times, water discharge will continue.

Next, the operation of the embodiment shown in FIG. 2 will be explained.

This embodiment is primarily suitable for use in cold regions. If the temperature adjustment screw 23 is turned on when the temperature of the outside air drops to near 000, the biasing section 25 that presses the lever 18
In other words, if the pushing force of the bellows is adjusted to be significantly reduced or eliminated, the biasing member 25, that is, the bellows will contract downward in the figure when there is a risk of freezing due to a drop in outside temperature. As the lever 18 increases its own weight and
The foundation is moved by the water discharge force from the drainage hole, the drainage hole 11 is opened, and water is discharged in the same manner as in the above embodiment to prevent water from freezing. 25, that is, the bellows pushes up the lever 18 upward in the figure due to the expansion of the internal air, and the lever 18 comes into pressure contact with the bottom surface 10 and drains the drain hole 1.
1 is blocked. Therefore, when discharging water, the air sac 36 of the water supply control section 28 is expanded by pressing the pressure sending section 27 of the air pressure device 26 with a foot or the like in the same manner as in the previous embodiment. As this air sac 36 expands, the biasing member 25, i.e., the bellows lever 1
It contracts downward in the figure as if being pushed by 8, and the drainage hole 11
Open and release water. When the pushing force applied to the pressure sending part 27 of the air pressure device 26 is removed, the air sac 36 contracts as in the previous embodiment, and the biasing member, that is, the bellows, moves upward in the figure again due to the expansion of the internal air. , and presses the lever 18 all the way to the bottom 10 to close the drain hole 11 and stop water discharge. Next, the effect when water is cut off will be explained.

If a hose or the like is connected to the serpentine pipe 39 and water is being supplied for a long time with the hose or the like submerged in the washing machine and the water supply is cut off, the first thing to do is to check the reverse when a negative pressure phenomenon occurs in the water supply source. The valve 15 senses this and closes the water inlet 14 from the back pressure chamber D side, and then the piston valve 16 slides upward in the figure by the elastic force of the spring 17 and closes the water inlet 8 and the water flow at the head surface 13. The inlet 6 is closed and the cylinder 12 prevents sewage from flowing into the water faucet 1.

Since the pneumatic faucet of the present invention has the above-described structure, to supply water, it is sufficient to inflate the air sac in the water supply control section, push the lever open, and open the drain hole. The pressure part of the air pressure device that inflates the air sac can be blown by pressing lightly with a part of the body such as a hand or foot.For example, when washing dirty hands, press the pressure part with your foot. Supply water while pressing the
When using soap, you only have to press the pressure part when necessary, which saves water and is economical.Moreover, you can supply water by pressing the pressure part with a part of your body, so you don't have to worry about getting your hands dirty. It is hygienic because there is no need to turn the handle, and it is extremely easy to operate.If the pressure sending part is installed in a convenient place such as the floor or the side wall of the sink, even people with manual disabilities can use it. can also be used.

In addition, the amount of pressure sent to the air sac is adjusted by adjusting the force with which the pressure sending part is pressed, thereby changing the state of expansion of the air sac and changing the open state of the drainage hole, thereby increasing the amount of water supplied. Since the amount of water supplied can be adjusted frequently, it is convenient. Furthermore, unlike a phototube, it does not require electrical equipment, so installation and maintenance are extremely simple, and it can be manufactured at low cost. If the lever is configured to be pushed toward the drain hole by a bellow, when the temperature drops in a cold region, the bellows will contract as the temperature drops and open the drain hole, allowing water to be released. Freezing is prevented, but the amount of water discharged can be automatically reduced to the necessary minimum depending on changes in temperature, so water is not wasted. In addition, an inlet that closes at the tip of the inflow channel and an outlet that fits into the outflow channel are provided on the top wall of the cylinder, and the inlet and outlet are constructed so that they can be closed by the face of the piston valve that slides inside the cylinder. Therefore, even if there is a gap between the peripheral wall of the piston valve and the side wall surface of the cylinder, the outflow port will be completely blocked even if water from the inflow channel flows into the cylinder through the water guide hole. No water leaks into the outflow channel. In other words, the piston valve, which is slidably fitted into the cylinder, only needs to be loosened to such an extent that the sliding resistance with the cylinder can be ignored. Therefore, the piston valve operates easily and quickly, regardless of the water supply pressure. The check valve, which is designed to close off the water guide hole provided on the face of the piston valve from the back pressure chamber side, can reliably discharge or stop the water supply, and the water supply source is controlled by the light movement of the piston valve. Even if water is cut off, sewage, etc. will be prevented from flowing back, so you can leave your eyes with peace of mind.To maintain water supply for a long time, turn the flange on the water supply control unit and always move the lever from the drain hole. If you separate it, you can get the required amount of water just like a conventional tap. Furthermore, when using the pneumatic faucet of the present invention,
Well, the valve stem in the Suidou Senzen is always located upwards, and the valve inside the stopper can be kept open at all times, so the packing attached to the valve returns pressure with the valve seat. This eliminates wear and has various effects such as being able to prevent the water hammer phenomenon.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the pneumatic faucet of the present invention,
FIG. 1 is a vertical sectional view of the main part showing the usage mode of the first embodiment,
FIG. 2 is a vertical sectional view of the main part showing the usage mode of the second embodiment;
FIG. 3 is a longitudinal sectional view showing a pressure sending section of the air pressure device, and FIG. 4 is a cross sectional view showing a water supply control section of the air pressure device. Code, 1...Water faucet, 5...Pneumatic water faucet, 6
...Inflow port, 8...Outflow port, 10...
Bottom of the cylinder 11...Drainage hole, 12...
Cylinder, 13...Piston valve head, 14...
...Water introduction hole, 15...Check valve, 16...Piston valve, 17...Spring, 18...Lever, 9...
... biasing village, 23 ... temperature adjustment screw, 25
...Biasing member "26...Pneumatic device, 27...
...'Pressure sending section, 28...Water supply control section, 35...
Ventilation pipe, 36...Air sac, 37...Tsubakin,
38... Notch, 39... Snake pipe. Figure 1 Figure 2 Figure 3 Festival map

Claims (1)

[Claims] 1. An annular outlet is formed by surrounding an inlet opening at the tip of the inlet to form an annular outlet communicating with the outlet, and a peripheral edge is placed on the same plane as the opening edge around the outer periphery of the outlet. and forming a valve seat with the opening edge,
Further, a pressurizing cylinder was installed surrounding the periphery in the opening direction with the inlet as the center, and the inner chamber of the cylinder had exactly the same pressure receiving area inside and outside, and a water guide hole was bored in the center of the head surface. A piston valve is slidably disposed toward the inlet, and a check valve is provided in the water guide hole of the piston valve to block the water guide hole by water flowing toward the inlet, and the head surface of the piston valve A main valve is provided in the cylinder, and this main valve faces a valve seat formed by an opening edge and a peripheral edge provided around the inlet, and the bottom of the cylinder is closed, and a drainage hole is provided in the center of the bottom. At the same time, a lever is provided which is slidably connected to the bottom surface of the cylinder at one end and is always biased by a biasing member such as a spring or a bellows in a direction that contacts the bottom surface of the cylinder from the outside; , the water supply control section of the pneumatic pressure device, which consists of a water supply control section consisting of an air pouch and a flange provided at one end of the vent pipe, and a pressure sending section connected to the other end of the vent pipe, is connected to the bottom surface of the cylinder and the lever. A pneumatic faucet placed between.