JPH0619664Y2 - Urinal flush valve for cold regions - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a flash valve used for cleaning urinals and is suitable for cold regions.

[Prior Art] A conventional flush valve for a urinal is shown in FIG. 4, in which an inlet d having a flow rate adjusting portion c on a side of a cylinder portion b in a body a, a valve seat e below, and an outlet f. A push button h having a starting rod g is provided on the lower side of the valve seat e, and an umbrella-like packing j that is in contact with the cylinder surface i is fixed on the valve seat e by a packing presser k, and a valve seat is provided below the valve seat e. Ring packing that contacts e
Is installed, and there is a valve body n having a notch m that serves as a water passage thereunder. A strainer p and a valve body n beside the valve body n so that the water pressure reaches the pressure chamber o above the packing presser k. A communication path is provided in the packing presser k, and a flat packing q is fixed in the lower part inside the valve body n by a flat packing presser r, and a spring t is packed in the packing presser k so that the starting valve s is closely attached to the flat packing q. A cap v having a water amount adjusting rod u which is provided between
It is known to have fixed.

[Problems to be solved by the invention] Conventional flash valves are used in cold regions as well, but there were no accidents mainly in places where there was no risk of freezing of pipes in buildings and the like. However, even in small stores, it may be installed as shown in Fig. 5 due to the spread of sewers.
In this case, even if the water in the pipe x is completely drained by the water drain w in the cold season, residual water is generated on the valve seat e in the flash valve y as shown in FIG. 4, and if frozen, it cannot be used the next morning, Also, the equipment was sometimes damaged. Therefore, the toilet is heated, the water drain plug w is drained, the cap v and the valve body n are removed to discharge the residual water, and the toilet is attached again for use. From the above, the conventional type was not suitable for cold regions. Although it is inconvenient to use the faucet-like flushing device and operate the handle after use, there is a labor to open the faucet when draining water from the piping, and the user is After using it, the faucet was still open, so the water could continue to flow. Therefore, even if the water was drained from the pipe with the flush valve, it was requested that the water could be used as usual when the water was discharged the next morning.

Since the conventional flush valve is not suitable for cold regions, the purpose of the present invention is to flush the pipe completely by simply operating the drain plug when draining the pipe. It intends to provide a flash valve for cold climates, which does not generate residual water inside and can be used normally the next morning.

[Means for Solving the Problem] A push button 7 for fixing the inflow port 3 and the starter rod 6 is attached to one side, and a cap 24 for screwing the water amount adjusting rod 23 is screwed on the upper side. A urinal flush valve having a pressure chamber 14 in the upper part, a cylinder part 2 in the center, and a valve seat 4 in the upper part of the body 1 where the pipe 32, which is the outlet 5, is screwed with the cap nut 33. On top of the valve seat 4, an umbrella-like packing 8 that contacts the cylinder surface 29 is fixed by a plug-like packing retainer 9 on the upper side, and an annular packing 10 that contacts the valve seat 4 is mounted on the lower side to form a water passage below it. The valve body 12 having the notch 11 is held by the spring 13, and the water pressure reaches the pressure chamber 14 above the packing presser 9, so that the valve body 12 and the packing presser 9 are provided with a communication path 15, and also in the communication path 15. The strainer 16 is stored in the valve body 12, and a flat pad is The Kin 17 stuck in flat packing presser 18, the gland spring 20 so that the start valve 19 comes into close contact with the flat packing 17
The packing presser 9 is provided between the starting valve 19 and the starting valve 19 and has a communication hole 22 for communicating with the starting chamber 21 and the pressure chamber 14.

[Operation] When the toilet bowl is not washed, as shown in FIG.
Water pressure from the valve body 12 reaches the pressure chamber 14 via the connecting passage 15 of the packing retainer 9, and pushes down the valve body 12 by the pressure, and the annular packing 10 comes into close contact with the valve seat 4, so that the water flows to the outflow port 5. Absent. At this time, pressure is applied to the starting chamber 21 from the pressure chamber 14 through the communication hole 22 of the packing presser 9. Since the starting valve 19 is closely attached to the flat packing 17 by the spring 20, there is no water leakage. To clean the toilet bowl, push the push button 7 and it is stuck to it.
19 is tilted, the starting valve 19 is separated from the flat packing 17, the pressure in the pressure chamber 14 drops, and as shown in FIG. 2, the valve body 12 rises due to the water pressure from the inflow port 3 and the annular packing 10 Water leaves the valve seat 4 and flows from the notch 11 that serves as a water passage under the valve body 12 to the outlet 5 and the toilet bowl. After that, part of the water
When the pressure gradually fills, the state shown in FIG. 1 is reached, the valve body 12 is lowered, and the water stops. With this, for a certain period of time,
Water will come out.

When draining water from the inside of the pipe, operating the water drain plug creates a negative pressure inside the pipe, and the pressure in the pressure chamber 14 also disappears, so the spring 13 raises the valve body 12 and the water remaining in the body 1 is removed. It is discharged from the inflow port 3 and the outflow port 5. In addition, a part of the water in the pressure chamber 14 comes out of the communication path 15, but as shown in FIG. 3, the umbrella-shaped packing 8 has expanded its outer periphery by water pressure and was in contact with the cylinder surface 29 until now. When the water pressure disappears, the water is released from the cylinder surface 29, and the water comes out from the gap. Therefore, no residual water is generated in the pressure chamber 14. No residual water is generated in the connecting passage 15 because the structure allows water to easily escape. Next, when the water drain plug is operated to pass water through the pipe, the pressure is transmitted to the pressure chamber 14, and the state becomes as shown in FIG.

[Examples] Examples will be described with reference to the drawings.

At the center of the body 1, there is a cylinder portion 2 containing a valve body 12, and at the side there is an inlet 3. A valve seat 4 is provided below the cylinder portion 2, and a push button 7 having an activation rod 6 extending in the central direction is provided on the side below the valve seat 4. The valve body 12 is hollow, and the umbrella-shaped packing 8 is provided on the upper side.
Is screwed with a plug-like packing holder 9. A vertical hole 25 is provided in the packing retainer 9 from above and communicates with the horizontal hole 26. Further, a bush 27 accommodating the mesh strainer 16 is screwed onto the vertical hole 25 to have a vertical communication hole 28.
The space above the packing retainer 9 is referred to as a pressure chamber 14, and the inner wall of the cylinder portion 2 is in contact with the umbrella-like packing 8 at the cylinder surface 29. The material of the umbrella-shaped packing 8 may be synthetic rubber or leather, and the outer periphery thereof does not come into contact with the cylinder surface 29 when draining water. A hole 30 is provided on the side of the valve body 12 and communicates with a vertical hole 25 of the packing retainer 9. Hold flat packing 17 in valve body 12 with flat packing.
It is fixed at 18, and the starting valve 19 is accommodated therein. The starting valve 19 is rod-shaped, and the head is forcibly brought into close contact with the flat packing 17 from the packing retainer 9 by the spring 20, and the flat packing 17 is inserted below the head. A communication hole 22 is provided in the packing presser 9 to connect the pressure chamber 14 and the starting chamber 21. Disc 12
An annular packing 10 is attached to the lower outer periphery and contacts the valve seat 4.
The valve seat 4 is fitted under the valve body 12 and a plurality of notches 11 are provided to serve as a water passage when water comes out. There is a spring 13 from above the valve seat 4 around the valve body 12 and has a force to lift the valve body 12,
The spring 13 contracts when a certain amount of pressure is accumulated in the pressure chamber 14. A cap 24 having a water amount adjusting rod 23 having a notch 31 at a lower end is screwed onto the body 1, and the notch 31 is a passage for introducing water pressure from the inflow port 3 into the pressure chamber 14. To connect the device to the toilet, use a pipe 32 and fix it with a cap nut 33.

[Advantages of the Invention] Since the present invention is configured as described above, it has the following effects.

First, because the outer periphery of the umbrella-shaped packing 8 is separated from the cylinder surface 29 when draining water due to the relationship between the umbrella-shaped packing 8 and the cylinder surface 29, water in the pressure chamber 14 can be drained and no residual water is generated in the pressure chamber 14. . Also, no residual water is generated in the connecting passage 15. Secondly, since the valve body 12 can be lifted by the spring 13 when draining water, no residual water is generated in the cylinder portion 2.

From the above, when there is no residual water and water is passed the next morning, water immediately comes out to the toilet bowl, and the present invention works normally.

[Brief description of drawings]

FIG. 1 is a sectional view showing a state in which water is stopped, FIG. 2 is a sectional view showing a state in which water is flowing out, FIG. 3 is an enlarged sectional view of an essential part when draining water, and FIG. FIG. 5 is a sectional view of the urinal flush valve, and FIG. 5 is a piping diagram in which the urinal flush valve is attached to the toilet bowl. In the figure, 2 is a cylinder portion, 4 is a valve seat, 8 is an umbrella-like packing,
9 is a packing retainer, 10 is an annular packing, 12 is a valve body, 13
Is a spring, 14 is a pressure chamber, 15 is a connecting passage, 16 is a strainer, 19 is a starting valve, 21 is a starting chamber, 22 is a communication hole for packing retainer, 23 is a water amount adjusting rod, 25 is a vertical hole for retaining packing,
26 is a side hole for the packing holder, and 29 is a cylinder surface.

Claims (1)

[Scope of utility model registration request] 1. A push button (7) for fixing an inflow port (3) on one side and a starting rod (6) on the other side, and a water amount adjusting rod (23) screwed on the upper side. The cap (24) is screwed on, and the pipe (32) that is the outlet (5) is screwed on the bottom with the cap nut (33). Inside the barrel (1), the pressure chamber (14) is located above the center. In a urinal flush valve having a cylinder portion (2) and a valve seat (4), an umbrella-like packing (8) that contacts the cylinder surface (29) upwardly on the valve seat (4) has a plug-like packing retainer ( A valve element that is fixed at 9), has an annular packing (10) that contacts the valve seat (4) below, and has a notch (11) below which serves as a water passage.
Hold the (12) with the spring (13), and the water pressure will reach the pressure chamber (14) above the packing retainer (9), so the valve body (12) and the packing retainer (9) will be provided with a communication path (15). , Again the connecting path (15)
The strainer (16) is housed inside the valve body (12), the flat packing (17) is fixed to the inside of the valve body (12) with the flat packing retainer (18), and the starting valve (19) is fixed to the flat packing (17). Install a spring (20) between the packing retainer (18) and the start valve (19) to ensure close contact,
A urinal flush valve for cold regions in which a packing hole (9) is provided with a communication hole (22) for connecting to the pressure chamber (14) to the starting chamber (21).