JPH0625681U - Ball tap - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a compact ball tap that does not use a lever and is easy to install, inspect, and repair. [Structure] An upward pipe portion 12 is provided at an end of a water supply passage 11 of a valve pipe 10 which is detachably attached and stands from the ceiling wall at an opening 2 in a ceiling wall 1 of a liquid storage tank, and a diameter is larger than that of the upward pipe portion. A downward tube portion 13 having a small water outlet 14 is concentrically connected in the vertical direction, and a standing shaft 22 standing from a float 21 penetrates the water outlet and is inserted from the downward tube portion into the upward tube portion. A slide valve 23 that slides vertically in the upward tube portion and a pressing valve 24 that moves vertically in the downward tube portion under the water outlet to open and close the water outlet from below are attached to the upright shaft, and stand up. A water passage space 15 is provided between the outer circumference of the shaft and the inner circumference of the spout.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a ball tap, which is provided in a liquid storage tank, supplies water into the tank when the liquid level in the tank drops below a predetermined level, and stops water supply when the liquid level in the tank rises due to water supply and recovers.

[0002]

[Prior art]

 In conventional ball taps, a float that moves up and down according to the level of the liquid in the tank is attached to the free end of the lever, and when the float moves downward due to the lowering of the liquid level, the float does not When the valve that closes the spout via the lever is opened to start water supply and the liquid level rises and recovers, the float pushes the lever up against the water force from the spout due to its own buoyancy, and the spout Must be closed with a valve.

[0003]

[Problems to be solved by the device]

 Therefore, it is necessary to use a large float that is heavy and has a large buoyancy, or to use a long lever. Generally, the ball tap is installed near the manhole on the ceiling of the liquid storage tank for inspection and repair, so if the float is large or the lever is long, the inside of the liquid storage tank will be cleaned. It opens the manhole and interferes with the entry of workers into the tank. Also, since it is fixed on the upper part of the side wall of the liquid storage tank, it is difficult to inspect and repair.

[0004]

[Means for Solving the Problems]

 Therefore, the present invention relates to a ball tap capable of opening and closing a water discharge port without using a lever, wherein the ball tap according to claim 1 has an upward tube portion at the front end of a water supply channel and the upward tube. A downwardly facing tubular portion having a water outlet having a diameter smaller than that of the portion, and is concentrically connected in the vertical direction, and an upright shaft standing from a float is inserted through the outlet into the upwardly facing tubular portion, A slide valve that slides up and down in the upward cylinder and a pressure valve that moves up and down in the downward cylinder under the water outlet to open and close the water outlet from below are attached to the upright shaft, and A feature is that a water passage space is provided between the outer circumference of the shaft and the inner circumference of the spout. Further, in the ball tap according to claim 2, the water supply passage, the upward cylinder portion, and the downward cylinder portion are integrally formed with a valve cylinder standing outside the tank through an opening formed in a ceiling wall of the liquid storage tank. And

[0005]

【Example】

 1 and 2 show an embodiment of the ball tap according to the present invention. FIG. 1 shows a state when the water supply is stopped and FIG. 2 shows a state when the water supply is performed. A valve cylinder 10 stands outside the tank by fixing a flange 10 ′ at the lower end around the opening 2 of the ceiling wall 1 of the liquid storage tank with bolts and nuts, and the tip of the water supply passage 11 to which the water supply pipe 3 of the water supply is connected. Further, it is provided with an upward tube portion 12 which is concentrically connected in the vertical direction and a downward tube portion 13 having a water discharge port 14 having a diameter smaller than that of the upward tube portion. The opening 2 of the ceiling wall 1 has a size that allows a float, which will be described later, to pass therethrough. 21 is a float, and an upright axis 22 stands from the float. The upright shaft penetrates the water discharge port 14 and is inserted from the downward tube portion 13 into the upward tube portion 12. The upper end portion of the upright shaft is a piston type that slides vertically in the upward tube portion 12. A slide valve 23 is attached, and a plate-like pressing valve 24 that moves up and down in the downward cylindrical portion 13 below the water outlet 14 to open and close the water outlet from below is attached below the slide valve 23. A water passage space 15 is provided between the outer circumference of the upright shaft 22 and the inner circumference of the water discharge port 14. The float 21, the upright shaft 22, the sliding valve 23, and the pressing valve 24 form a valve body 20 with a float. Further, since the upper end of the upward tube portion 12 is closed by the upper lid 16, the space above the slide valve 23 is opened to the atmosphere, so that one end of the upright shaft 22 is opened at the upper end of the shaft and the other end is opened. Is provided with a vent hole 25 that opens to the peripheral side below the pressure valve 24. Normally, a through cylinder 9 is erected on the ceiling wall 1 of the liquid storage tank, and the liquid level in the tank is communicated with the atmosphere through a filter provided inside the cylinder for preventing invasion of insects and dust. Therefore, even if the upper end of the upward cylinder is closed by the upper lid 16, the space above the sliding valve 23 communicates with the atmosphere, and if the upper lid 16 is not present, dust will not accumulate on the sliding valve 23. Preventable and hygienic. Further, in order to prevent the float or the upright shaft from swinging, a guide 17 for slidably holding the upright shaft 22 is provided on the inner periphery of the lower end portion of the downward cylindrical portion 13. This guide has a plurality of water passages 17 'at the periphery for allowing the water discharged from the water spout 14 to flow down to the water tank. Reference numeral 18 denotes a stopper that determines the lower limit of the sliding valve, and even if the sliding valve is fully lowered together with the float and the standing shaft, the sliding valve is positioned above the liquid supply passage 11.

In FIG. 1, the liquid level in the tank is at the full water level, and the float 21 presses the push valve 24 by a buoyancy force through the upright shaft 22 against the valve seat projecting downward around the spout 14, Water supply to the tank is stopped. When the water supply is stopped in this way, an upward water pressure P ₁ acting on the slide valve 23 from the water supply passage 11 and a downward water pressure P ₂ acting on the push valve 24 via the water discharge port 14 are generated. As described above, the diameter of the water discharge port is smaller than the diameter of the upward cylinder portion 12 on which the sliding valve slides, so the upward water pressure P ₁ acting on the sliding valve by the difference in the pressure receiving area is larger. Due to this large pressure difference (P ₁ -P ₂ ), the standing shaft 22 is pulled upward, and the pressing valve 24 is urged to close the water discharge port. The weight of the float valve body 20 is set so that it can be lowered against the water pressure difference (P ₁ -P ₂ ).

Therefore, when the water in the tank is pumped to an elevated water tank or the like and the liquid level drops, and the float 21 loses its buoyancy, the valve element 20 with float descends integrally against the biasing force of the water pressure difference. Then, the pressing valve 24 is separated from the valve seat of the discharge port 14 downward, and as shown in FIG. 2, the supply of water into the tank is started from the water supply passage 11 through the downward cylinder portion 13 and the water discharge port 14. In this way, when the liquid level in the tank rises due to water supply, the float 21 rises accordingly, and when the liquid level reaches the full water level, the pressing valve 24 closes the valve seat of the spout with buoyancy as described above, and closes due to the water pressure difference. Energized to the valve state.

In order to increase the buoyancy of the float-equipped valve body 20 that presses the pressure valve from below onto the valve seat of the water outlet 14 to close the water outlet, the float 21 or its upright shaft 22 is vertically overlapped and floats as a unit. One or a plurality of auxiliary floats, that is, two upper and lower auxiliary floats 21A and 21B in the figure may be connected by a string-like connecting tool 26 such as a chain.

As a guide 27 for vertically floating the upper and lower auxiliary floats 21 A and 21 B so as to be vertically overlapped with each other under the float 21, a guide shaft is attached to the float 21 so that the auxiliary float is movable in the vertical direction. It's skewered. Instead of the guide shaft, as shown by a broken line, a water pipe that surrounds the float 21 and the auxiliary floats 21A and 21B is hung vertically from around the valve pipe 10 or the opening 2 in the ceiling wall, and inside the water pipe, the float and the auxiliary pipe are provided. The float may be moved up and down.

As a result, as shown in FIG. 3, the liquid level in the tank is lowered, and even if the float 21 comes out above the liquid level and loses buoyancy, the liquid level is further lowered and the float 21A above the liquid level is lowered. Even if the buoyancy is lost on the surface, the pressure valve 24 closes the water discharge port 14 from below due to the water pressure difference (P ₁ -P ₂ ), and the liquid level becomes the drought level near the bottom of the tank, and the auxiliary float 21B below also. Only when the buoyancy is lost, the float valve body 20 descends, and the push valve 24 can be separated from the water discharge port 14 downward to start water supply. Further, by continuing the water supply, the lower auxiliary float 21B first floats below the upper auxiliary float 21A, and further the upper and lower auxiliary floats 21A and B float together, so that the liquid level becomes the full water level. As shown in FIG. 1, when the upper and lower auxiliary floats are superposed below the float 21 and float together, the floated valve body 20 rises and resists the water force discharged from the water discharge port 14 and presses the pressure valve. At 24, the discharge port is closed from the bottom, and the pressure valve can be kept closed by the water pressure difference (P ₁ -P ₂ ). In this way, the start of water supply can be controlled when the liquid level in the tank reaches the dry water level, and the stop of water supply can be controlled when the liquid level reaches the full water level to prevent chattering of the pressure valve.

To install on the ceiling wall, the bolt 4 is planted around the opening 2 with the nut 5, and the hole in the collar 10 ′ at the lower end of the valve cylinder is fitted to the bolt and nut to mount the valve cylinder. It can be installed easily because it can be set up on the ceiling wall, the bolt 4 can be fitted with a washer from above, and the nut 6 can be screwed in and tightened from above. Further, by removing the nut 6 from the bolt, the valve cylinder together with the float can be removed from the ceiling wall, so that inspection and repair can be easily performed.

FIG. 4 shows another embodiment in which the mounting manner of the valve cylinder 10 to the opening 2 of the ceiling wall is changed. A screw cylinder 7 with a collar having internal and external threads is inserted into the opening 2 from above, and a nut 8 is screwed into a male screw on the outer periphery of the screw cylinder to fix the screw cylinder to the ceiling wall 1, and the valve cylinder 10 is directed downward. A male screw 13b is provided below the collar 13a on the outer periphery of the tubular portion 13, and the male screw 13b is screwed into a female screw on the inner periphery of the screw cylinder 7 so that the collar 13a is superposed on the collar 7a of the screw cylinder. Therefore, this embodiment is also easy to install, and the valve cylinder can be detached from the ceiling wall together with the float by twisting and rotating the valve cylinder in the opposite direction, so that inspection and repair can be easily performed.

When the weight of the float 21 is light, a spring 28 for depressing the slide valve 23 is provided as shown by a broken line, and the weight of the float is supplemented by this spring to start water supply. Good. If the buoyancy of the float is small, a spring 29 for pushing the pressing valve 24 upward may be provided as shown by the broken line, and the buoyancy of the float may be supplemented by this spring to stop the water supply.

[0014]

[Effect of device]

 As is apparent from the above, according to the present invention, it is possible to provide a compact ball tap that controls start and stop of water supply by upward and downward displacement of a float without using a lever. Then, an opening of a size that allows the float to pass through is opened in the ceiling wall of the liquid storage tank, and the valve cylinder need only be erected on the ceiling wall from that opening, so installation, inspection, and repair can be performed easily.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a ball tap according to an embodiment of the present invention when water supply is stopped.

FIG. 2 is a cross-sectional view of the ball tap of FIG. 1 during water supply.

FIG. 3 is an explanatory diagram when a plurality of floats are used in the ball taps of FIGS.

FIG. 4 is a side view, partly in section, of another embodiment of the ball tap of the present invention in which the mounting method of the valve cylinder on the ceiling wall is changed.

[Explanation of symbols]

 1 Ceiling Wall of Storage Tank 2 Opening of Ceiling Wall 10 Valve Cylinder 11 Water Supply Channel 12 Upward Cylinder 13 Downward Cylinder 14 Outlet 15 Water Passage 20 Valve with Float 21 Float 21A Auxiliary Float 21B Auxiliary Float 22 Standing Axis 23 Sliding valve 24 Pressing valve 26 String-shaped connector 27 Float up / down guide

Claims (4)

[Scope of utility model registration request] 1. An upright tube portion at the tip of a water supply channel and a downward tube portion having a water outlet having a diameter smaller than that of the upward tube portion are vertically and concentrically connected to each other, and an upright shaft standing up from a float is discharged. A sliding valve that penetrates through the water port and is inserted from the downward cylinder into the upward cylinder, and slides vertically on the upright shaft in the upward cylinder, and moves vertically in the downward cylinder under the spout. Then, a pressure valve that opens and closes the water discharge port from below is attached, and a water passage space is provided between the outer circumference of the standing shaft and the inner circumference of the water discharge port. 2. The ball tap according to claim 1, wherein the water supply passage, the upward cylinder portion, and the downward cylinder portion are integrally formed with a valve cylinder standing outside the tank through an opening formed in the ceiling wall of the liquid storage tank. A ball tap that is characterized. 3. The ball tap according to claim 1, wherein the upper end of the upward cylindrical portion is closed with an upper lid, and one end of a standing shaft standing from the float is open at the upper end of the shaft. A ball tap, characterized in that a vent hole is provided, the end of which is open to the peripheral side below the pressure valve. 4. The ball tap according to any one of claims 1 to 3, wherein one or a plurality of auxiliary floats that vertically overlap with the float or its upright axis and float as a unit is connected to the string-like connector. A ball tap characterized by being connected with.