JPH0346049Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention belongs to the field of water distribution equipment for preventing freezing, and is an improvement of the Koma valve (Utility Model Registration No. 939103) of the anti-freezing faucet of the applicant. The present invention relates to such a valve structure.

(Prior art) The valve structure conventionally used for antifreeze faucets and water drain valves is one in which the valve body disengages from the water hole when opening the water hole that communicates the water inlet and water outlet. This caused unnecessary external force to be applied to the spindle guide and valve body, insufficient measures against water pressure when the water was stopped, and packing to prevent intermediate drainage during cold weather that caused drainage to occur when the water was stopped. The hole is frozen and occluded,
There are problems such as the risk of damaging the valve structure due to the freezing expansion pressure on the secondary side.

(Problems to be solved by the invention) In view of the above-mentioned prior art, this invention has been developed to provide a method that can ensure a stable water-stopping function of the valve, gradually reduce water impact pressure, and prevent damage caused by freezing and expansion pressure on the secondary side. The present invention provides a valve structure for a freezing faucet.

(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. A guide piece having a means for gradually reducing water impact pressure whose space gradually increases and decreases is integrally suspended, a communication hole is provided through the center of the piece stand and the guide piece, and an opening/closing means is installed in the communication hole of the guide piece. It is.

Here, the water impact pressure gradual reduction means may be any means that gradually changes the water passage space of the water passage hole as the spindle rotates when opening and closing the water passage hole. For example, the thickness of the seat may be changed as appropriate, or the cross section of the outer diameter of the guide guided to the water hole may be gradually changed.

(Function) According to the above valve structure, the bending stress applied to the spindle guide part and the valve body is alleviated, and the water stop position is maintained constant, so the water stop function is stably maintained, and the spindle By gradually changing the water flow space of the water inlet in the axial direction, water impact pressure is reduced, and the lower surface of the guide piece is fully exposed to the water inlet side, making it less likely to freeze. The freezing and expansion pressure on the secondary side is released by the communication hole provided through the piece and the communication hole opening/closing means in the guide piece.

(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 of an anti-freeze faucet having a spring 13 interposed therebetween, a ring groove 14 is recessed in the lower bottom of a piece stand 7 which is suspended from the lower end of the spindle 5 via a piece suspension 6. A screw hole 16 is provided in the shaft portion 15 which hangs down the inner circumferential surface of the ring groove 14 as required.
A communication hole 17 is provided through the center of the screw hole 16, and the above-mentioned packing 8, that is, the upper part has a seating surface that seats on the periphery of the water passage hole 4, and the lower part has a diameter that has a seating surface that seats on the periphery of the water passage hole 4.
A ring-shaped packing 8 having a fitting hole 18 in the center and having an outer diameter and a required height to fit into the ring.
into the ring groove 14 of the piece stand 7. As shown in FIG. 2, the guide piece b has the outer diameter of the seat 19 such that it fits into the water passage hole 4, and a screw shaft 20 is erected at the center of the upper part of the seat 19. A small hole 21 is dug in the center of the hole 21, and a communicating hole 22 is inserted through the bottom of the small hole 21, and a leg 2 equally divided into three parts is provided at the bottom.
3, 24, and 25 are suspended, and the outer surface of the legs is the same outer circumferential surface as the outer diameter of the seat 19, and the height of the outer periphery of the seat 19 is between the three divided legs, that is, as shown in FIG. 2mm between legs 25 and 23, legs 23 and 2
The steps are 2.5 mm between the legs 24 and 25, and 3 mm between the legs 24 and 25.The small diameter 21 of the guide piece b is equipped with a small ball 26 and a spring 27 that presses the small ball 26 as a means for opening and closing the communication hole 22. By screwing and fixing the screw shaft 20 of the guide piece b into the screw hole 16 of the piece stand 7 with the O-ring 28 stored in the screw hole 16 of the piece stand 7, the spindle 5 is fixed while the packing 8 is fixed. The piece valve itself at the lower end is always guided to the water passage hole 4, and the water passage space 29 from the water inlet 2 side to the water passage hole 4 when water is stopped is provided by a spindle as shown in FIGS. 6 to 8. As the valve 5 descends, it gradually decreases as shown by diagonal lines, thereby gradually lowering the water impact pressure, making the descent (as well as the rise) of the spindle lighter, and preventing unnecessary external force from being applied to the valve itself. Conversely, when raising the spindle 5 to open the water passage hole 4, rotate the spindle 5 counterclockwise to open the split washer 1.
The packing 12 fitted into the drain hole 1 of the stopper stand 9
1 is closed, but at this time, the ring groove 14 of the piece stand 7 is closed.
The lower part of the packing 8 fitted into the water passage hole 4 is in a state where no water passes through, and when the spindle 5 is further rotated to the left, the spring 13 is compressed and the packing 8 is disengaged from the water passage hole 4. Water is allowed to flow in the state shown in FIG. 4 without intermediate drainage, and by rotating and raising the spindle 5, the flow area of the water hole 4 is gradually increased to reach the fully open state shown in FIG. 5. In this fully opened state, guide piece b has its legs 23,
Guided to the inner periphery of the water passage hole 4 at 24 and 25,
The guide part of the spindle 5 and the valve itself are prevented from being deformed due to twisting or bending resistance. next,
When the water is stopped as shown in FIG.
If expansion pressure due to freezing occurs on the secondary side with the drainage hole 11 blocked by freezing and sticking, the water pushed into the stopper box 1 on the water outlet 3 side by the expansion pressure will be As shown in the figure, the piece is guided through the gap 30 between the inner circumference of the frame suspension 6 and the outer circumference of the spindle 5, and into the gap 30 between the stator 31 at the tip of the spindle 5 and the inner circumference of the piece stand 7, and further into the communication hole 17. The water enters further and presses the small ball 26, passes through the small hole 21, flows backward from the communication hole 22 to the water inlet 2 side, drastically reduces the expansion pressure on the water outlet 3 side in the stopper box 1, and causes damage to the valve itself and the spindle 5. to prevent damage to the guide section. In addition, as a means for gradually reducing the water impact pressure, there is also a method of appropriately changing the cross section of the leg of the guide piece b while maintaining the guide outer diameter to change the water passage space 29 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. Stably and gradually lowers the water impact pressure when the water is turned off, especially when the water is stopped, protects the valve and makes handle operation easier, and relieves the expansion pressure when the secondary side freezes, and
There will be no intermediate drainage when water is flowing.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view showing one embodiment of the valve structure of the antifreeze faucet according to this invention when the valve is closed, Fig. 2 is a perspective view of guide piece b, and Fig. 3 includes the legs of guide piece b. FIG. 4 is a partial vertical sectional view of the valve main part showing an intermediate state when the spindle is raised; FIG. 5 is a partial longitudinal sectional view of the valve main part showing the fully open state; FIG. 6 is a developed view of the outer peripheral surface of the seat. 8 to 8 show 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 and 12 are packing, 14 is a ring groove, 15 is a shaft part, 16 is a screw hole, 17 , 22 is a communication hole, 18 is a fitting hole, 19 is a seat plate, 20 is a screw shaft, 21 is a small hole, 23, 24,
25 is a leg, 26 is a small ball, 28 is an O-ring, 29 is a water passage space, 30 is a gap, 31 is a stator, a is a piece valve, and 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 guide piece having a water impact pressure gradual reduction means that gradually increases and decreases the water passage space is hung down integrally, a communication hole is provided through the center of the piece stand and the guide piece, and an opening/closing means is provided inside the communication hole of the guide piece. The valve structure of an antifreeze faucet consists of: