JP4337978B2 - Water sprinkler faucet device for cold districts - Google Patents

Description

The present invention relates to a mixed faucet column that is installed in a garden or the like and can use water and hot water, and in particular, not only prevents the mixed faucet column itself from freezing, but also prevents freezing of hot water supplied from indoors. The present invention relates to a hot water and water mixing sprinkler device for cold districts.

  Recently, mixed faucet columns that can use not only water but also hot water have started to be used for outdoor hand-washing and car-washing because it has become cold or has good dirt removal.

However, in cold districts such as Hokkaido and Tohoku, the water in the faucet column is frozen and cannot be used in the winter period, or it can lead to accidental damage to the pipes. It wasn't.
JP 2002-348920 A

Therefore, the applicant has proposed a mixed faucet column for cold districts that can be used safely even in cold districts.
Japanese Patent Application No. 2003-384875

  In the above-described method, hot water from the mixing faucet column is discharged into the ground to empty it by operating the handle, thereby preventing freezing. However, in the hot water supplied to the mixing faucet column, the water is buried below the freezing depth in the ground, and when the hot water heater is installed outdoors like the outside of the road, it is similarly buried below the freezing depth. Therefore, there is no worry about freezing, but nothing is said about measures to prevent freezing of hot water when it is installed indoors as in the road.

  An object of the present invention is to provide a mixed water faucet device for cold districts which prevents freezing of hot water supplied from indoors as well as a mixed water faucet column.

  A valve body connected to the handle on the ground via an operating shaft moves through a valve box with a hot water inlet and outlet, and a water inlet downstream of the water inlet. When the mixed faucet column is connected to the water inlet and the hot water inlet by piping, and the mixed faucet column is discharged by the operation of the handle, the water pressure from the water inlet disappears. Therefore, the main feature is that the hot water supply to the mixing faucet column is automatically stopped and the hot water pipe and the switching valve for discharging the hot water in the water pipe from the discharge port are used.

  According to the present invention, not only the mixing faucet column but also the freezing of the hot water pipe on the upstream side thereof can be provided by simply operating the handle of the mixing faucet column. It can greatly contribute to the improvement of comfortable living.

  The present invention relates to a mixing faucet column that is installed outdoors and can be drained by a handle operation, and is installed indoors, at a location where freezing or at least upstream hot water draining can be performed after a water heater. The best mode is to connect hot water pipes and water pipes to a switching valve that automatically shuts off and drains hot water from the pillars and can take in water without using an intake valve.

  FIG. 1 is a cross-sectional view showing an embodiment of the mixed faucet column of the present invention, wherein 1 is a valve box embedded in the ground below the freezing depth, and 2 is a flow of water that opens to the lower side. Inlet 3 is a water inlet opening on the downstream side, 4 is an inlet of hot water provided above and perpendicular to the paper surface, and 5 is an outlet for hot water and water that opens in the middle of the paper at right angles to the paper surface. . 6 is a water bypass and 7 is a hot water bypass. Although not illustrated, a check valve is attached to the discharge port 5 so that underground sewage does not enter the valve box 1.

Inside, three cylinders 8, 9, 10 having the same diameter in order from the top, 8 above the hot water inlet 4, 10 below the outlet 5, hot water inlet 4 and outlet 5 A small-diameter cylinder 11 is provided between the water inlet 2 and the water inlet 3 below, and a valve seat 12 is formed at the upper end.

  A valve body 13 is accommodated inside the valve box 1, and three annular packings 14, 15, 16 that slide on the cylinders 8, 9, 10 are mounted on the valve body 13, and a small diameter is provided at the lower end. A resin water control ring 17 that slides on the cylinder 11 and a flat packing 18 that is in close contact with the valve seat 12 are mounted by screws 19 so as not to be detached. In addition, since the discharge port 5 is disposed between the hot water inlets 4 and 2, even if there is an accident in the annular packings 15 and 16 in the open state, contamination of the hot water on the water side It is possible to effectively prevent water from entering the hot water side, increasing the pressure and causing an accident in the water heater.

  The valve body 13 is extended upward by an operation shaft 20 made of a solid rod, and is connected to a handle 23 at the upper end of the ground part via a shaft coupling 21 and an operation rod 22 pipe-coupled to the shaft coupling 21.

  The valve box 1 is extended to the ground portion concentrically with the operating shaft 20 by a decorative tube 24 made of a circular stainless steel thin tube having a glossy appearance, and the decorative tube 24 has three horizontal holes in the upper end portion, and corresponding positions. The branch valve box 25 accommodated in the water is further passed through the valve lid 27 of the water stop valve 26 protruding outward from the lateral hole, and the packings 28 and 28 'of the valve lid 27' of the hot water stop valve 26 '. Although not shown, it is fixed to the decorative tube 24 via a packing of a discharge joint provided in a direction perpendicular to the drawing. A discharge port is rotatably connected to the discharge joint.

  The water stop valve 26 has a stop packing 30 that is in close contact with the valve lid 27 and the water side valve seat 29 of the branch valve box 25 and a stop valve body 32 to which a stop handle 31 is attached. Is exactly the same, and includes a valve lid 27 ′, a stopper packing 30 ′ in close contact with the hot water side valve seat 29 ′, and a stopper valve body 32 ′ on which a stopper handle 31 ′ is mounted.

  The branch valve box 25 is screwed to the upper end of an operating fitting 34 to which the operating male screw 33 of the operating rod 22 is screwed. The lower end of the branch valve box 25 is connected to the water bypass path 6 and hot water at the left and right target positions. A copper water riser 35 and a hot water riser 35 'communicating with the bypass 7 are inserted. In the drawing, the rising pipes 35 and 35 'are simply O-ring sealed, but in order to improve the sealing performance, the packing may be tightened with a nut. O-rings 38 and 39 for preventing water leakage are attached to the upper and lower flange portions 36 and 37 to which the discharge lids are screw-connected to the valve lids 27 and 27 ', and a mixing portion of hot water is formed between the two over the entire circumference. To do.

  FIG. 2 shows an embodiment of the switching valve 40 of the present invention. A body 41 which is divided into left and right and connected diagonally by several screws (not shown) is arranged at the lower left end of FIG. A water inlet 42 connected to the water inlet 2 via a pipe, a hot water outlet 43 connected to the hot water inlet 4 of FIG. 1 via a pipe at the lower right end, and an air hole 44 at an intermediate lower end thereof. And has a hot water inlet 45 at the upper right end. 46 and 47 are intake valves for taking air into the body 41.

  In the body 41, a large-diameter sealing means 48 made of a diaphragm communicating with the water inlet 42 and a hot water seal 49 are mounted, and are tightly attached to the hot water valve seat 51 formed in the body 41 by being pressed by the spring 50. A possible hot water valve body 52 and a pressure transmission body 54 having a small-diameter sealing means 53 for accommodating the water pressure applied to the large-diameter sealing means 48 to the hot water valve body 52 are accommodated. A valve lid 55 also serves as a guide for the hot water valve body 52 and a base for the spring 50. In this embodiment, a diaphragm is used as the large-diameter sealing means 48, and an O-ring is used as the small-diameter sealing means 53. However, the present invention is not limited to this.

  1 and 2 show the open state of the mixing faucet column and the switching valve 40. Water from the water inflow port 2 passes through the water bypass passage 6 and the water riser pipe 35, and the water side valve. It reaches the seat 29 and further reaches the water inlet 42 through the pipe from the water inlet 3. Due to the pressure difference based on the area difference between the large-diameter sealing means 48 and the small-diameter sealing means 53, the pressure transmission body 54 is pressed to the right, and the hot water valve body 52 opens the hot water valve seat 51 and is supplied from the water heater. Hot water flows from the hot water inlet 45 and the hot water outlet 43 through the piping to the hot water inlet 4, and reaches the hot water side valve seat 29 ′ through the hot water bypass passage 7 and the hot water rising pipe 35 ′. If the stop handles 31, 31 'are rotated from this state, the hot water is discharged from the discharge port through the mixing portion.

  Normally, it is used in this state, but when there is a concern about water freezing in the winter, when the handle 23 is rotated, the operating rod 22 is lowered while rotating in the operating bracket 34 by the operating male screw 33, At the same time, the shaft coupling 21 connected to the operation rod 22 through the pipe and the valve body 13 connected to the shaft coupling 21 via the operation shaft 20 are lowered without rotating in the branch valve box 25 and the valve box 1. .

  First, the water control ring 17 is in close contact with the small diameter cylinder 11 to close the water inlet 2, and then the annular packing 16 is detached from the cylinder 10 and the annular packing 15 is also detached from the cylinder 9. Since the water pressure acting on the large-diameter sealing means 48 through the receiving port 42 is eliminated, the hot water packing 49 of the hot water valve body 52 is brought into close contact with the hot water valve seat 51 due to the flow of hot water and the pressing force of the spring 50. The flow of hot water to the gate 43 is cut off.

  Therefore, the water in the pipe from the water inlet 42 to the water inlet 3 and the hot water in the pipe from the outlet 43 to the hot water inlet 4 are sucked from the intake valves 46 and 47 into the ground from the outlet 5. Then, the valve body 13 is further lowered and the flat packing 18 comes into close contact with the valve seat 12 to be completely discharged. In this state, if the stop valves 26 and 26 'are opened, air is discharged from the discharge port. The hot water in the water rise pipe 35 and the hot water rise pipe 35 'is simultaneously discharged from the discharge port 5 into the ground.

  Therefore, no hot water remains in the mixing faucet column and in the pipe connecting the mixing faucet column and the switching valve 40, and even in severe cold regions such as Hokkaido, the residual water freezes to block the pipeline, There will be no accidents in which water does not come out or freeze and break. If the pressure transmission body 54 is operated smoothly by the air hole 44 and a hose is attached to the tip so that the water can be drained, an accident should water leak from the large-diameter sealing means 48 or the like. It becomes a prevention means.

  When the resin header piping is used, the switching valve 40 is installed adjacent to the hot water header, such as behind the ceiling, under the floor, etc., to prevent freezing of the hot water upstream of the hot water inlet 45 and to use the mixed faucet column during the winter period. This is advantageous from the standpoint of reducing the amount of stagnant water. In addition, a hot water pipe from the switching valve 40 to the mixing faucet column is not buried in the soil, and at least a portion that may be frozen is provided with an appropriate gradient so that no water remains when discharged. Keep it.

  FIG. 3 shows another embodiment of the switching valve 40 of the present invention. The intake valves 46 and 47 in FIG. 2 are omitted, and a large-diameter valve seat 56 and a small-diameter valve seat 57 are placed on the same axis instead of the body 41. In addition, it is normally sealed by the large-diameter sealing means 48, and when draining, the hot water valve body 52 presses the pressure transmission body 54, and the small holes 58 of the large-diameter sealing means 48 through the air holes 44 and the hot water valve body 52 The air can be sucked through the gap.

  The hot water inlet 45 is formed in a horizontal direction, and the hot water valve body 52 is pressed by a conical spring 50 having a C-shaped ring 59 as a pedestal. It has become. The other operation modes are the same as those in FIG.

  The mixed faucet column itself can be variously modified as shown in the above-mentioned Japanese Patent Application No. 2003-384875. However, the difference between the two is in the valve box 1 of this embodiment. It has a water port 3 and does not require a hot water stop means from the hot water inlet 4, and other valve structures, intermediate structures, and upper structures may be combined.

In the present invention, apart from the hot water piping from the switching valve 40 to the mixing faucet column, water piping is also required, but since simultaneous parallel piping is possible, it does not require much labor and cost,
If a resin pipe is used, the cost can be further reduced.

  The valve body 13 of the mixing faucet column uses a valve body that moves up and down to select the open / discharge state. A ceramic valve body that is widely used can be used, and the handle rotation angle is small, so that there is an advantage that the operability is improved. The same applies to the stop valve bodies 32 and 32 '.

  The present invention may be installed not only in the garden of a house but also in a public place used by an unspecified number of people, such as in a park, and can be used for washing in a factory. It can greatly contribute to the improvement of local comfortable life.

It is a longitudinal cross-sectional view in the open state which shows one Example of the mixing faucet pillar of this invention. Example 1 It is a longitudinal cross-sectional view in the open state which shows one Example of the switching valve of this invention. Example 1 It is a longitudinal cross-sectional view in the open state which shows the other Example of the switching valve of this invention. (Example 2)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Valve box 2 Water inlet 3 Water inlet 4 Hot water inlet 5 Outlet 13 Valve body 20 Operation shaft 23 Handle 40 Switching valve 41 Body 42 Water inlet 43 Hot water outlet 44 Air hole 45 Hot water inlet 48 Large diameter sealing means 50 Spring 52 Hot Water Valve Body 53 Small Diameter Sealing Means 54 Pressure Transmitter

Claims (1)

  Inside the valve box, which is buried below the freezing depth, and has a water inlet, outlet, and water inlet downstream of the water inlet, it is connected to the handle on the ground via an operating shaft. A valve body having a sealing means and a hot water discharge means moves to select a both open and discharge state, a water faucet column connected to the water inlet through a pipe, and a hot water supply A hot water valve body capable of blocking hot water from the hot water inlet by being pressed by a spring, and a body having a hot water inlet from the vessel and a hot water outlet connected to the hot water inlet through a pipe; A large-diameter sealing means that communicates with the mouth, accommodates a pressure transmission body that presses the hot-water valve body in the opening direction, and forms a small-diameter sealing means that communicates with the hot water outlet between the two. Hot water for cold districts, comprising a switching valve provided in the body with an air hole that opens between the sealing means If watering faucet device.