JP2004019308A - Water tap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain valve of excellent operability, easily installed, taking little space and particularly optimum for water supply to a low tank of a flush toilet in a cold district. <P>SOLUTION: An outflow fitting 20 having an outflow port 19 is connected to the upper end of a pipe 13 extended from a valve casing 1 buried underground, and an operating part case 23 is further connected to the upper part respectively in a horizontally rotatable manner. An operating rod connected to a rotor 27 having a lever part 26 is connected to a rod 14 extended from a piston 8 of the valve casing, and an outflow cylinder 15, in which outflow side annular packing 34 mounted to the operating rod slides, having a diameter equal to or slightly larger than the diameter of a cylinder of the valve casing, is formed above the outflow port. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water tap used for preventing freezing of a water supply pipe in a cold region, and particularly to a water tap suitable for low tank water supply of a flush toilet.
[0002]
[Prior art]
Conventionally, water taps have been used in water supply systems for flush toilets in cold regions to prevent freezing. Since the two pipes protrude into a small room, they are difficult to operate, receive a cluttered feeling, hinder the cleaning, and have a defect that the space for placing objects is limited accordingly. In addition, since the span of the two pipes is fixed and the riser pipe cannot be rotated after installation, there is also a problem that the connection work becomes difficult when installing the toilet.
[0003]
[Problems to be solved by the invention]
The present invention has been filed in order to solve the above problems, and takes up little space, can be neatly arranged, has good operability, and connection work is easy, and is particularly suitable as a low tank water supply device for flush toilets. It is intended to provide a drain plug.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the drain valve of the present invention is buried underground and has an inflow port and a drain port on the side, a valve box having a cylinder inside, and is housed in the valve box, and slides the cylinder. The piston to which the annular packing is mounted is extended to the ground by pipes and rods, and the outflow fitting with an outlet at the upper end of the pipe, and the operating unit case by a nut above it, can be rotated horizontally, respectively. An operating rod connected to a rotor having a lever portion, which is connected and rotates vertically with the operating portion case as a fulcrum, is connected to the rod, and has the same diameter as the valve box cylinder above the outflow port. A slightly large-diameter, outflow cylinder in which the outflow-side annular packing mounted on the operation rod slides is formed. Only one pipe protrudes into the room, and the outflow port and the direction of the handle can be freely set. To Since Erareru, those that can provide aesthetic appeal, construction, excellent drain tap operability.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of a water tap according to the present invention. A valve box 1 buried below the freezing depth in the ground is provided with an inflow port 2 at an upper side and a drain port 3 at a lower end, and is provided inside. Forms a water stop cylinder 4 above the inflow port 2, an intermediate cylinder 6 between the inflow port 2 and the drainage preparation chamber 5, and a drainage cylinder 7 between the drainage preparation chamber 5 and the drainage port 3.
[0006]
Reference numeral 8 denotes a piston, which is provided with three annular packings 9, 10, and 11 that slide on the cylinders 4, 6, and 7, and that has a drainage passage that communicates between the annular packings 10 and 11 from above the annular packing 9 therein. I have 12 In addition, the valve box 1 is extended to the above-ground part by the pipe 13 and the piston 8 is extended by the rod 14. Although not shown, a check valve is connected to the drain port 3 to prevent underground wastewater from entering the valve box 1.
[0007]
An outflow cylinder 15 having the same diameter as the cylinders 4, 6, and 7 is formed at the upper end of the pipe 13 protruding into the room, and a support bracket 17 having a plurality of outflow lateral holes 16 is screwed and fixed below the outflow cylinder 15. An outflow fitting 20 having a rotatable outlet 19 is provided at a position corresponding to the outflow side hole 16 so as to be sandwiched between the pipe 13 and the step 18 of the support fitting 17.
[0008]
An operation unit case 23 screwed to a nut 22 locked to a projection 21 at the upper end of the support bracket 17 forms a window 24 at a front end, and a lever portion 26 hinged to the side by a support pin 25. Is accommodated.
[0009]
The rotor 27 is bifurcated and accommodates therein a rectangular portion 29 of an operation rod 28 screwed to the upper end of the rod 14 so as to sandwich the same. Both are connected by the attached connecting pin 31 so as not to be separated.
[0010]
A torsion spring 32 is fixed to the lower end of the rectangular portion 29 by a roll pin 33 so as to sandwich the rectangular portion 29 so as to apply a pressing force to the rotor 27 to maintain the current state. An outflow-side annular packing 34 that slides on the outflow cylinder 15 is mounted on the operating rod 28, and the outflow fitting 20 is equipped with two O-rings 35 and 36 to prevent water leakage.
[0011]
The figure shows a water passing state, in which the water from the inflow port 2 flows through the pipe 13 to the outflow side hole 16 to the outflow port 19, and reaches a low tank (not shown). At this time, since the cylinders 4, 6, 7 and the outflow cylinder 15 of the valve box 1 have the same diameter, the downward force and the upward force due to the water pressure acting on the piston 8 and the operating rod 28 are offset, and the rotor No force acts to rotate 27 in the vertical direction.
[0012]
When it is desired to drain water from this state, the low tank may be opened and the lever 27 may be pushed down, and the rotor 27 rotates around the support pin 25 as a result of overcoming the elastic force of the torsion spring 32, and accordingly, The operating rod 28 in which the lateral groove 30 is locked by the connecting pin 31 also rises, but first, the annular packing 9 of the piston 8 comes into close contact with the water-stop cylinder 4 to block water from the inflow port 2, and thereafter, the annular The packing 11 comes off the drainage cylinder 7.
[0013]
After rotating about 110 °, the piston 8 reaches the highest position and is drained. At this time, the water in the pipe reaching the low tank flows out of the outlet 19 without flowing out to other places by the annular packings 9, 10, and 34. , And is discharged into the ground from the drain port 3 through the pipe 13 and the drain channel 12.
[0014]
Since the water stop cylinder 4 and the intermediate cylinder 6 have the same diameter, there is also an advantage that the piston 8 does not receive any upward or downward force due to the water pressure at this time, so that the handle operation is simple and light. .
[0015]
The outflow metal fitting 20 is rotatable at a fixed position, and the operation unit case 23 can be freely changed in its direction by loosening the nut 22 tightened by hand. Can be freely rotated like the outflow joint 20 without loosening or tightening.
[0016]
FIG. 2 shows another embodiment of the upper structure. An outflow fitting 20 having an outflow port 19 is formed integrally with the support fitting 21 of FIG. 1, and is engaged with a metal elastic ring 37 whose end is cut off. The retaining ring 38 does not rotate the elastic ring 37, but the outflow fitting 20 and the retaining nut 38 are rotatably connected to the pipe 13.
[0017]
The operation case 23 is connected to the upper end of the outflow fitting 20 from above by a nut 22, and the rotor 27 having the lever 26 is connected to the operation case 23 by the support pin 25, and the tip of the rotor 27 is bifurcated. The terminals 39 are hinged to each other by connecting pins 31.
[0018]
At the upper end of the operating rod 28, a U-shaped circular groove 40 in which the actuator 39 slides is bored, and a coil spring 41 for pressing the actuator 39 is accommodated. , 15 'are fitted with two outflow-side annular packings 34, 34'.
[0019]
Inside the operation rod 28, an intake passage 42 penetrating from above the outflow-side annular packing 34, 34 'to above the outflow-side annular packing 34' is formed, and a water stop valve 43 seated at the upper end of the rod 14 is housed therein. In the water flowing state, the outflow side annular packing 34 prevents the pressurized water from acting on the water stop valve 43. Reference numeral 36 denotes an O-ring for preventing water leakage, which is in close contact with the upper end of the pipe 13.
[0020]
When the lever portion 26 is rotated downward from the water passing state in the figure, the rotor 27 also rotates about the support pin 25, and the operation rod 28 is moved while the actuator 39 connected by the connection pin 31 is moved in the lateral direction. At this time, the outflow-side annular packing 34 separates from the lower outflow cylinder 15, and the outflow-side annular packing 34 ′ comes into close contact with the upper outflow cylinder 15 ′.
[0021]
Therefore, the atmosphere is introduced into the pipe 13 through the intake passage 42, water can be drained without opening the low tank, and the valve chamber is heated so that it does not freeze. There is the convenience that water can be left and used at night.
[0022]
Since the water shutoff valve 43 is housed in the intake passage 42, water does not flow out of the intake passage 42 to the operation case 23 side even when the position of the low tank is high. Further, during normal water flow, pressure water does not act on the water stop valve 43 due to the outflow side annular packing 34, and therefore, so-called sticking due to water leakage or the water stop valve 43 being pressed by water pressure for a long period of time. There is an advantage that it does not occur.
[0023]
In addition, two outlets 19 may be provided at a horizontal position to be used for low tank and washlet water supply. Further, two outlets can be provided at different levels so that they can rotate freely with respect to each other. The position of the operation unit case 23 can be freely set, and the lever 26 rotates within 180 ° in the vertical direction. Therefore, even if the lever 26 is mounted on any corner or a narrow place, the handle operation can be performed by hitting the lever 26 against a wall or the like. It will not be impossible.
[0024]
In the present invention, since the cylinder of the valve box and the outflow cylinder are formed to have the same diameter, the water pressure does not act as a force for raising the piston, so that the handle operation can be performed easily and lightly, and The piston does not move automatically due to water pressure, so-called self-running does not occur.However, when the piston is pulled out for repair etc., the annular packing of the piston flows out of the valve box cylinder so that it does not slide on the outflow cylinder. The cylinder may be formed slightly larger. When pulling out the piston, the nut 22 can be easily pulled out together with the operating section case 23 and the operating rod 28 by loosening the nut 22.
[0025]
【The invention's effect】
As described above, in the present invention, only one pipe protrudes into the room, the direction of the outflow port and the lever portion can be freely changed, and it is not subjected to the force of water pressure. In addition to being cleaner, the interior can be used more effectively, cleaning becomes easier, etc. In addition to this, costs can be reduced, plumbing work is easy, operability is good, the interior is narrow, toilets etc. Although it is often difficult to operate because of the shade of water, it is most suitable as a water tap for low tank water supply of flush toilets, but of course, it can be used for water supply in kitchens and other places.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a water drainage plug according to an embodiment of the present invention in a normal water flow state.
FIG. 2 is a partial vertical cross-sectional view showing another embodiment of the water drainage plug of the present invention in a normal water flow state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Valve box 2 Inflow port 3 Drain port 4, 6, 7 Cylinder 8 Piston 9, 10, 11 Ring packing 13 Pipe 14 Rod 15, 15 'Outflow cylinder 19 Outflow port 20 Outflow fitting 22 Nut 23 Operating part case 26 Lever part 27 Rotors 34, 34 ′ Outflow side annular packing 42 Intake path 43 Water stop valve

Claims (2)

A valve box buried in the ground and having an inflow port and a drain port on the side and a cylinder inside, and a piston fitted with an annular packing that is housed in the valve box and slides on the cylinder, each a pipe, An outflow fitting with an outlet is connected to the upper end of the pipe by a rod, and an operating case is connected to the upper part of the pipe by a nut so as to be rotatable in the horizontal direction. The operation rod connected to the rotor having the lever portion, which rotates in the direction, is connected to the rod, and is attached to the operation rod having a diameter slightly larger than the cylinder of the valve box above the outlet. A drain plug formed by forming an outflow cylinder on which the outflow side annular packing slides. An intake path for introducing air into the pipe is formed between the two outflow-side annular packings which are in close contact with the outflow cylinder, and is opened above the upper outflow-side annular packing. 2. The water drainage plug according to claim 1, wherein a water stop valve for preventing water from entering the operation unit case during drainage is accommodated in the intake path.

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