JPH046824B2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention a Industrial application field The present invention relates to an antifreeze drain plug.

b. Prior Art A conventional water drain valve 50 has a switching valve 51 that is operated by a handle 53 above the ground and is buried deep underground. The pipes are installed to each water supply section.

Therefore, 51 is a switching valve that switches between water supply and water drainage, and its lower end is connected to the water pipe 54 via an elbow 54A, and the outer shell pipe 52 is connected to its upper end and rises above the ground. A handle 53 for operating the switching valve is fixed.

Reference numeral 55 denotes a riser pipe for water supply, which is piped to each water supply section, and its lower end is connected to the water supply port 62A of the switching valve 51.
59 is an ice melting pipe, 60 is a cold protection material, and 61 is a cap of the ice melting pipe.

58 indicates the ground surface, and 57 indicates the floor of the building.

62 is a valve body body, into which a piston 64 is slidably fitted.

The upper part of the piston 64 is connected to the handle 53 via a rod 66 and a spindle 67.
In addition, since the cap 63 fixed to the upper end of the outer tube 52 and the spindle 67 are screwed together, when the handle 53 is turned, the spindle 67 moves up and down, so the piston 64 connected to it also moves up and down. Sliding.

When the piston 64 is in the upward position, water is supplied. That is, water from the water pipe enters from the lower end of the valve body, passes through the water passage hole 62C, reaches the water supply port 62A, and is supplied via the riser pipe 55. At this time, the gasket 72 prevents water from flowing upward.

Next, by turning the handle 53, as shown in FIG.
If the water passage hole 62C is closed by lowering it until it comes into close contact with the upper surface of the water bottle 2C, the water supply will be stopped and the water will be drained.

That is, the water in the riser pipe 55 and each piping beyond it passes from the water supply port 62A between the inner surface of the valve body body and the bottom of the piston, and enters the water drain hole 6 provided in the piston.
4B enters the check valve chamber 64A, and the check ball valve 6
8 and is discharged to the outside through the drain passage 62B.

69 is a water stop bulb, and when the piston part is pulled upward during maintenance etc., water pressure causes the water stop bulb 69 to close.
is in close contact with the lower surface of the water passage hole 62C to prevent water from gushing out. Normally, the water stop bulb 69 is held in the water passage hole 62C by the water stop ball holder 65 attached to the lower end of the piston.
It is held in such a way that it does not block the area. 71, 73 and 74 are patchkins.

c Problems with the conventional technology (1) Since the switching valve 51 is buried deep underground, when the groundwater level is high in the draining state, underground sewage flows into the check valve chamber 64A through the drain passage 62B. Since the water flows in and pollutes the valve seat 64D, the contact between the valve seat 64D and the check ball valve 68 becomes poor, and as a result, the dirty water flows through the drain hole 64B to the water supply port 62.
Because it flows in direction A, when the valve is switched to water supply, this dirty water will flow to each water supply section, which poses a sanitary problem.

(2) When servicing the main body of the switching valve 51,
It is necessary to close the main valve of the underground water supply and dig up to the location of valve 51.

(3) Rise branched from valve 51 (water supply)
The pipe 55 usually does not have heat insulation equipment, and there is a risk of freezing in cold weather.

In addition, in some cold regions, a method is used in which a deicing pipe 59 is fitted into the riser pipe and hot water is injected from the upper end to thaw the ice when it freezes, but this method prevents freezing. There's nothing to do. In addition, there are some cases in which the outside of the deicing pipe 59 is covered with a cold protection material 60 made of foam polystyrene or the like, but it is currently difficult to maintain the heat retention effect because it is damaged by frost heave on the ground surface and other causes.

B Arrangement of the Invention a Means for Solving the Problem The present invention attempts to solve the above-mentioned problem with the following arrangement. That is, in the present invention, by combining the water drain valve and the water supply riser pipe into one cylinder and raising the operation part of the water drain valve above the ground, it can be easily repaired in the event of a breakdown, and the water supply riser pipe part is vacuum-proof. The space prevents freezing, and even if water is dropped, the operation section is above ground, so sewage underground will not get in. In addition, the control unit is configured to use geothermal heat by convection of fluorocarbon gas to prevent freezing.

b Embodiment of the Invention 1 is an antifreeze water drain plug of the present invention, the lower end of which is connected to the water pipe 2 via an elbow 2A, and the water supply pipe 3 is connected from the side surface of the upper end, from which each water supply part is connected. Water is sent to

4 indicates the ground, and 5 indicates the floor of the building.

6 is a switching valve, and 7 is a handle for operating the switching valve. 13 is a water pipe;
A water stop bulb casing 21 is screwed onto its upper end. Water stop bulb 22 in the hollow part of the water stop bulb casing 21
A water stop bulb holder 23 is screwed to the lower side of the water stop bulb to prevent the water stop bulb from falling. The valve casing 20 is arranged on the upper surface of the water stop bulb casing 21, and a knock pin 24 prevents mutual rotation. 20A is a hole into which a dowel pin is inserted.
A water stop bulb holder 25 is fixed to the valve casing 20, and normally supports the water stop bulb 22 so as not to block the water passage in the water stop bulb casing 21.

When the valve casing 20 is removed for maintenance or the like, the water pressure causes the water stop bulb 22 to come into close contact with the lower surface of the hole in the water stop ball casing 21, thereby preventing water from gushing out. A disk-shaped lower valve plate 26, a valve operating plate 27, and an upper valve plate 28, all made of ceramic material, are arranged in close contact with each other in order from the lower surface of the cylindrical hollow portion of the valve casing 20.

The valve plates 26 and 28 each have a set screw 3.
2 and 33 prevent rotation relative to the valve casing 20.

The upper surface of the valve plate 28 is held down with appropriate pressure by a joint nut 19 via a packing 41.

Upper water pipe 1 on the top of the joint nut.
8, the upper end of which is connected to the upper casing 17.
is connected to. 29 is a valve drive shaft;
The middle part is pipe-shaped, and the hollow part is sealed with Freon gas to keep the water warm.

The notch 29A at the lower end of the valve drive shaft 29 is
Elongated hole 2 provided in the center of the valve actuation plate 27
7B, and its upper cylindrical portion is rotatably fitted into a hole 28D in the center of the valve plate 28. On the other hand, the notch 29B at the upper end fits into the groove 31A at the lower end of the spindle. Moreover, the leading edge part has a cylindrical shape, and the groove 31A of the spindle 31
The top is pressed with appropriate pressure by a compression spring 30 placed in the deep hole.

35 is a screw cap screwed onto the upper casing 17. A spindle receiver 36 is screwed onto the screw cap 35 and supports the spindle 31 via a packing 38.

Reference numeral 37 denotes a retaining ring, which fits into a groove provided in the spindle 31 and is supported by a screw cap to prevent it from slipping upward.

Next, we will explain the heat insulation equipment.

Three layers of pipes are arranged outside the water passage and each layer is sealed and fixed. These are referred to as a first pipe 8, a second pipe 10, and a third pipe 12 from the outside.

The sealed upper surface of these pipes is the upper casing 17
Fixed.

Further, the inner surface of the third pipe 12 is supported and fixed to the water pipe 13 by an upper support ring 14 and a lower support ring 15.

The upper support ring 14 and the lower support ring 15 are provided with drainage holes 16A and 16B, respectively.

The intermediate vacuum chamber 9 between the first pipe 8 and the second pipe 10 is maintained at a high degree of vacuum and is intended for insulation to prevent conduction of external cold air.

Freon gas is sealed in an intermediate portion between the second pipe 10 and the third pipe 12, and a gas chamber 11 is formed with the outer diameter of the lower end portion 10A projecting outward.

Operation mechanism of switching valve When water is supplied, water flows from the water passage hole of the water stop bulb holder 23 to the water supply hole 20B of the valve casing 20.
, and the water supply holes 26A, 27A, and 28A provided in the lower valve plate 26, valve operating plate 27, and upper valve plate 28 match, so water passes through these holes and flows through the upper water pipe 18 and the upper part. The water reaches the water supply pipe 3 through the hollow part of the casing 17, and is supplied to each water supply section.

On the other hand, in this state, the upper and lower valve plates 2
Drain holes 26B and 28B provided in 6 and 28
has a structure in which water does not flow out from the drainage path because it is partitioned off by the valve operating plate 27.

Next, turn the handle to remove the valve operating plate 27.
Rotate 180° to drain water. That is, since the water supply holes 26A and 28A of the valve plate are closed by the valve operation plate 27, when the water supply is stopped, the water supply hole 27A of the valve operation plate is aligned with the drain holes 26B and 28B of the valve plate. , water in the pipe above the switching valve 6 flows through the holes 28B, 27A, 26.
B, falls through the drain hole 20C of the valve casing, and then drops to the drain hole 16 of the support rings 14 and 15.
A, 16B to the outside of the lower end of the device.

A small-diameter portion is provided on the outer periphery of the valve actuation plate 27, and a set screw 34 is fixed to the outer wall of the valve casing 20 in a manner corresponding to the position of the valve actuation plate 27, and the tip thereof is connected to the valve actuation plate 27. The structure is such that when the valve operating plate 27 is at the water supply position and the water draining position, the set screw 34 stops when it hits the end (stepped part) 27C of the small diameter part of the valve operating plate. When switching the valve, it is sufficient to turn the handle 7 until it stops, and the structure is such that there is no fear of erroneous operation.

39, 40, 41, 42, 43 are Patsukins.

c Action When using water, turn the handle 7 to the left, and water flows from the water supply pipe 3 to the water pipe 13, the water stop bulb casing 21, the water supply hole 20B of the valve casing, the water supply hole 26A of the valve plate 26, and the valve operating plate. Water passes through the water supply hole 27A of the valve plate 27, the water supply hole 28A of the valve plate 28, and the upper water pipe 18, passes through the pipe from the water supply pipe 3, and comes out from the faucet. When draining water, turn the handle 7 to the right and the water supply hole 27A of the valve operating plate 27, the valve plate 26,
28 are the same as the drain holes 26B and 28B, and when the water that was in the pipe is opened, air enters from the faucet due to the gravity of the water and drains into the valve plate 2.
Drain holes 26B, 28B of 6 and 28, long hole 27B of valve operating plate 27, drain hole 20C of valve casing, and drain hole 16 of lower support ring.
The water in the pipes penetrates into the ground through A and 16B. (When using water, please use the valve plate 28, 2.
The elongated hole 27B of the valve operating plate sandwiched between the drain holes 28B and 26B of No. 6 is located at the water supply position, and the drain hole is water-tight. Also, when water is dropped, the water supply holes 28A, 26A of the valve plates 28, 26
The elongated hole 27B of the valve actuation plate 27 sandwiched between the valve actuating plates 27 is in a water draining position, and the water supply hole is water-tight.

C. Effect of the invention In conventional water draining devices, water is supplied from the main water supply pipe using a drain valve and a water supply riser pipe, but if you forget to drain water in cold regions, the water supply riser pipe may freeze and break, and the water drain valve gasket may wear out. Failures such as replacement will occur.

On the other hand, with the device of the present application, such failures do not occur, and it is possible to provide a sanitary water supply without contamination with sewage when water is dropped, and even if you forget to drain the water, the water supply outlet of this device is connected to the geothermal heat. Protects against freezing (due to convection of Freon gas). Another feature of this device is that it protects against gas damage with a high vacuum, increases thermal efficiency, and does not freeze at all even in extremely cold regions.

[Brief explanation of drawings]

Figure 1 is a front view of the whole with a part cut away, Figure 2
The figure is an enlarged longitudinal sectional view of the main part, Fig. 3 is an enlarged perspective view of the main part disassembled, Fig. 4 is a sectional view taken along line E-E, Fig. 5 is a longitudinal sectional view showing the water passage during water supply, Figure 6 is F-
A sectional view taken along line F, Fig. 7 is a longitudinal sectional view showing the passage of water when water is drained, Fig. 8 is an overall front view with a portion of the conventional model cut away, and Fig. 9 is an enlarged longitudinal sectional view of the main part of the conventional model. The top view, FIGS. 10 and 11 are longitudinal sectional views showing the operation of the valve. 1... Antifreeze water drain valve, 6... Switching valve, 9...
Vacuum chamber, 11... gas chamber.

Claims (1)

[Claims] 1 Water stop bulb casing 2 at the upper end of the water pipe 13
1 is screwed onto the water stop bulb casing 21, and a water stop bulb 22 is placed in the hollow part of the water stop bulb casing 21.
A water stop bulb holder 23 for preventing the water stop bulb from falling is screwed onto the lower side of the water stop bulb 1, a valve casing 20 is arranged on the top surface of the water stop bulb casing 21, and a water stop bulb 22 is attached to the valve casing 20. Water stop bulb holder 25 so as not to block the water passage in 21
is fixed, and a disc-shaped lower valve plate 26, a valve operating plate 27, and an upper valve plate 28, all made of ceramic material, are arranged in close contact with each other in order from the lower surface of the cylindrical hollow part of the valve casing 20, and the upper surface of the valve plate 28 is , Patsukin 4
1, and is held down by a joint nut 19 with appropriate pressure, and an upper water passage pipe 18 is disposed on the upper surface of the joint nut, the upper end of which is connected to the upper casing 17, and the valve drive shaft 29
The middle part of the valve drive shaft 29 is pipe-shaped, and the hollow part is sealed with fluorocarbon gas to keep the water warm.The notch 29A at the lower end of the valve drive shaft 29
It fits into the elongated hole 27B provided in the center of 7.
The upper cylindrical part is rotatably fitted into the hole 28D at the center of the valve plate 28, while the notch 29B at the upper end is fitted into the groove 31A at the lower end of the spindle. A first pipe 8, a second pipe 10, and a third pipe 12 are arranged, and each pipe is sealed and fixed, and a vacuum chamber 9 located between the first pipe 8 and the second pipe 10 has a high degree of vacuum. The intermediate part between the second pipe 10 and the third pipe 12 is filled with fluorocarbon gas.
An antifreeze water drain plug characterized in that the gas chamber 11 has an outer diameter of its lower end portion 10A projecting outward.