JPH0344845Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a valve structure related to an improvement of the Koma valve (Utility Model Registration No. 939103) of an antifreeze faucet by the applicant of the present application.

(Prior art) The valve structure of conventionally used water supply faucets and drain valves for anti-freezing is such that the valve itself is removed from the water hole that communicates the water inlet and water outlet when water is flowing. The lower end bears the influence of flowing water pressure in a cantilevered state, and there is a defect that the water stop function of the spindle guide part and the valve seating surface deteriorates due to repeated exposure to flowing water pressure. In addition, some valves have a spiral groove around the outer periphery of the water passage hole insertion part of the valve body in order to prevent water from being compressed when the valve is opened and closed.
In addition, since the amount is small, it becomes difficult to operate the handle when inserting the water passage hole of the valve body, and in cold weather, the water in the spiral groove tends to freeze when the water is stopped, making it difficult to maintain the compression relaxation function stably. be.

(Problems to be solved by the invention) This invention solves the deficiencies of the above-mentioned prior art and achieves the stable maintenance of the water shutoff function and the function of gradually reducing the water impact pressure during water shutoff. It provides structure.

(Means for solving the problem) This idea is to attach a piece stand to the lower end of a spindle inserted into the antifreeze faucet box toward the water passage hole between the water inlet and the water outlet in the antifreeze faucet box. The upper part has a diameter that fits on the periphery of the water passage hole, and the lower part has a diameter that fits into the water passage hole.The upper part of the piece holder has a diameter that fits in the water passage hole, and the upper part of the piece holder has a diameter that fits into the water passage hole. Fix the fitted top suspension, fit the washer that is loosely fitted on the spindle between the top suspension and the stopper stand, and fit the packing that connects and separates from the drain hole of the stopper stand, and install a spring between the washer and the stopper stand. In the piece valve of the anti-freeze water faucet which is interposed,
The lower end of the packing that fits into the water passage hole has a guide outer diameter that fits into the water passage hole, and has a height that does not fall out of the water passage hole even at the rising end of the spindle, and a height that allows water to flow through the water passage hole as the spindle goes up and down. It is formed by integrally suspending a guide piece having a means for gradually reducing water impact pressure whose space increases and decreases. Here, the water impact pressure gradual reduction means may be any structure that increases or decreases the amount of water flowing in the cross section of the water hole, such as increasing or decreasing the height of the seat,
Alternatively, the cross section of the leg having the guide outer diameter may be shaped like a pyramid.

(Function) According to the above valve structure, since the guide piece is guided to the inner periphery of the water passage hole even at the rising end of the spindle, the bending stress applied to the spindle is alleviated, and the stable seating of the valve on the valve seat surface is ensured. Since the guide piece gradually increases or decreases the water passage space of the water passage hole in the axial direction, that is, in the plane of the water passage hole, the handle operation when inserting the guide piece into the water passage hole is easy, and the guide piece is easy to operate. The entire bottom surface of the piece is exposed to the water inlet side, so it is difficult to freeze.

(Embodiment) To explain an embodiment of this invention, as shown in FIG.
A piece stand 7 is rotatably fitted into the bottom end of the piece stand 7 via a piece hanger 6, and the upper part has a diameter that has a seating surface that sits on the periphery of the water passage hole 4, and the lower part has a diameter that has a seating surface that sits on the periphery of the water passage hole 4. A piece hanging 8 having a diameter and a required height to fit into the water hole 4 is fitted in a concentric manner, screwed onto the upper part of the piece stand 7, and a piece hanging 6 loosely fitted on the spindle 5.
A packing 12 that comes into contact with and separates from the drainage hole 11 of the stopper stand 9 is fitted onto the split washer 10 that is loosely fitted onto the spindle 5 between the stopper stand 9 and the split washer 10 and the stopper holder 6.
In a piece valve a of an antifreeze faucet having a spring 13 interposed therebetween, a ring groove 14 is recessed in the lower bottom of a piece stand 7 suspended from the lower end of the spindle 5 via a piece hanging 6. At the same time, a threaded hole 16 is provided in the shaft portion 15 that hangs down the inner peripheral surface of the ring groove 14 as required, and the above-mentioned packing is performed. A ring-shaped packing 8, which has an outer diameter and a required height to fit into the water passage hole 4 and has a fitting hole 17 in the center thereof, is fitted into the ring groove 14 of the piece stand 7. As shown in FIG. 4, the guide piece b has the outer diameter of the seat 18 such that it fits into the water passage hole 4, and a screw shaft 19 is installed in the center of the upper part of the seat 18, and a screw shaft 19 is installed in the lower part. Legs 20, 21, 22 equally divided into three are hung down, and the outer surface of the legs is the same outer circumferential surface as the outer diameter of the seat 18,
The height (thickness) of the outer periphery of the seat 18 is between the three divided legs, that is, the height (thickness) of the outer circumference of the seat 18 is between the legs 20 and 21 as shown in FIG.
2mm between legs 21 and 22, 2.5mm between legs 22,
20 has a step of 3 mm, and by screwing and fixing the screw shaft 19 of the guide piece b into the screw hole 16 of the piece stand 7, the packing 8 is fixed and the piece valve itself at the lower end of the spindle 5 has a water passage hole. 4, and the water passage space 23 from the water inlet 2 side to the water passage hole 4 when water is stopped is gradually reduced as the spindle 5 descends, as shown by diagonal lines in Figs. 6 and 7. This gradually lowers the water pressure, making it easier for the spindle to descend and preventing unnecessary external forces from being applied to the valve itself. On the other hand, when the spindle 5 is raised to open the water passage hole 4, when the spindle 5 is rotated counterclockwise, the packing 12 fitted on the split washer 10 closes the drain hole 11 of the stopper base 9 by the spring 13. At this time, the packing 8 fitted in the ring groove 14 of the piece stand 7 is fitted into the water passage hole 4 at its lower part, and no water flows through it.When the spindle 5 is further rotated to the left, the spring 13 is compressed and the packing 8 is fitted into the ring groove 14 of the piece stand 7. 8 escapes from the water passage hole 4, and water flows as shown in Fig. 2 without intermediate drainage, and the spindle 5 still flows.
By rotating and raising the water passage hole 4, the flow area of the water passage hole 4 gradually increases until it reaches the fully open state shown in FIG. In this fully open state, the guide piece b is guided by its legs 20, 21, and 22 to the inner periphery of the water passage hole 4, thereby preventing the valve itself from being deformed due to twisting or bending resistance. In addition, guide piece b is used as a means to gradually reduce water sanitary pressure.
There is also a method of appropriately changing the cross section of the legs to change the water passage space 23 when moving up and down the water passage hole 4.

(Effects of the invention) As described above, according to this invention, the wear and tear caused by twisting and bending resistance on the valve itself is eliminated, and the water stop function at the spindle guide and valve seat surface is stably maintained. Stable and gradual reduction of water pressure, especially when water is stopped, makes handle operation easier, prevents the generation of unnecessary external force, and eliminates intermediate drainage when water is flowing.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view showing an embodiment of the valve structure of the antifreeze faucet according to this invention when the valve is closed; Fig. 2 is a partial vertical sectional view of the main part of the valve showing an intermediate state when the spindle is raised; Figure 3 is a partial vertical sectional view of the valve main part showing the fully open state, Figure 4 is a perspective view of the guide piece, Figure 5 is a developed view of the outer peripheral surface of the seat of guide piece b, and Figures 6 to 8. indicates the water passage space when guide piece b passes through the water passage hole when water is stopped. In the figure, 1 is a stopper box, 4 is a water hole, 5 is a spindle, 6 is a piece hanging, 7 is a piece stand, 8 is a packing,
14 is a ring groove, 15 is a shaft portion, 16 is a screw hole, 1
7 is a fitting hole, 18 is a seat plate, 19 is a screw shaft, 20,
21 and 22 are legs, and 23 is a water passage space. a is komaben, b
is a guide piece.

Claims (1)

[Scope of utility model registration request] A piece stand is rotatably fitted loosely to the lower end of a spindle inserted into the stopper box toward the water passage hole between the water inlet and the water outlet in the antifreeze faucet box. A piece of packing with a diameter that fits on the periphery of the water hole and a diameter that fits into the water hole is fitted concentrically to the lower part, and a piece suspension loosely fitted to the spindle is fixed to the upper part of the piece stand. A piece valve of an antifreeze faucet consisting of a washer that is loosely fitted on the spindle between the faucet bases, and a packing that connects and separates from the drain hole of the faucet base, and a spring is interposed between the washer and the stopper. The lower end of the packing that fits into the water hole has a guide outer diameter that fits into the water hole, and has a height that does not fall out of the water hole even at the rising end of the spindle, and a height that increases the water hole as the spindle goes up and down. A valve structure for an antifreeze faucet comprising a guide piece having a means for gradually reducing water impact pressure that increases and decreases the water flow space.