JPH04136591A - Water passing and stopping cock - Google Patents

Abstract

PURPOSE:To freely make fluid to stop and pass by inserting a hollow screw rod in a cylindrical elastic body and arranging receiving plates abutting on the cylindrical elastic body at the head of the elastic body and detachably fitting a washer, which abuts on the base section of the elastic body, and the nut neighboring the washer to the middle part of the thread rod. CONSTITUTION:A water stopping cock 1 which allows water to pass is inserted into a pipe. In this state, the nut 4a of the water stopping cock 1 is fitted to the fitting section 5a of the head of an external cylinder 5 in a detention state. The left hand thread section 4b of the water stopping cock 1 is threadedly fitted to the thread section 6a of the head of a cylinder 6 to install the water stopping cock 1 in the end section of the pipe. When the external cylinder 5 is rotated in the direction to which the nut 4a goes ahead, the nut 4a goes ahead toward the head of a screw rod 4, and an elastic body 8 is intensively pressed between a washer 9 and receiving plate 7, and the peripheral surface of the elastic body 8 expands toward the internal wall face of the pipe to clog the pipe. In this state, when a pipe with pressure gauge and check valve are connected to water pass section 2 and pressured gas is charged in the system through the water pass section 2, pressure loss can be measured, and whether or not there are portions where fluid leaks from piping newly embedded in a wall can also be measured.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a water stopper that allows water to pass through, and its purpose is to use a water stopper for testing liquid leakage immediately after new piping and a valve for a liquid storage tank. To provide a water shutoff piece capable of shutting off water and allowing water to flow, which can be used as a temporary valve in case of failure.

(Prior Art) Conventionally, the water stopper that the present inventors have already developed and revealed is usually used to repair broken water pipes, and it prevents water from leaking from the broken water pipes and preventing water exposure to workers. Therefore, there are tools for repairing broken water pipes that can prevent accidents for workers.

The repair tools are described below.

Figure 5 (^), (B), (C), (D), (
As shown in E), conventionally, the water pipe (40) was covered at the point in (A) due to aging, vibration, earthquake, etc.
If your water breaks, ±(42) around the water rupture point (A)
excavate and remove the area, and cut the water pipes (41) around the water rupture point (^).

At that time, the tap water (43) will continue to flow, so as shown in Figure 4 (C), the water stop piece (44) is placed at the end of the water pipe (41a) from which the tap water (43) is flowing. Insert the water stop piece (44) into the water stop piece (44) and support the water stop piece (44) by aligning the core material of the water stop piece (44) with the inner rod (44a),
While in this supported state, turn the nut using the outer rod (44b),
A water stop piece (44) is swollen within the water pipe (41a) to stop the flow of tap water (43).

In this state, connect the branch pipe (45) to the water pipe (41a), loosen the water stop part (44) by reversing the above water stop operation, and then disconnect the water stop part (44) from the water pipe (41a). By moving the connecting branch pipe (45) to the proximal end (45b) and connecting the branch pipe (45a) and the water pipe (41b), the water pipe (
41) and restore the original state of the water supply (43) for a short period of time without stopping the flow of water in the water main (not shown). Existing device exists.

(Problem to be Solved by the Invention) On the other hand, as shown in Fig. 6, during a liquid leakage test immediately after piping of a new pipe (46) such as a water pipe or gas pipe, the terminal of the new pipe (46) taps due to its positional relationship with the wall surface (10). There are cases where it is necessary to check whether there is any liquid leakage in the new piping (46) due to pinholes, poor connections, etc., even though the new piping (47) cannot be installed.

Furthermore, as shown in Figure 7, when the liquid drain valve (49) of the liquid storage tank (48) is clogged, this device can stop the water and replace the valve (49), but the replacement work is not complete. However, there is a drawback that the accumulated liquid splashes onto the worker and wets the worker's own face, limbs, etc., as well as the worker's clothes.

Furthermore, even if the storage tank (48) is a pharmaceutical or cleaning solution for precision electronic equipment that should not be contaminated with dirt or impurities, the use of this device has the disadvantage that dirt or impurities will inevitably enter the liquid storage tank (48). there were.

Also, before attaching the liquid drain valve (49) to the liquid storage tank (48) shown in Figure 7, it is necessary to inspect whether the liquid storage tank (48) is liquid-tight and airtight. Ta.

(Means for Solving the Invention) In view of the above-mentioned drawbacks of the prior art, the present invention includes a cylindrical elastic body, a through hole is bored along the central axis of the elastic body, and a hollow screw rod is inserted into the through hole. A receiving plate that contacts the distal end surface of the elastic body is connected to the tip of the screw rod, and a washer that comes into contact with the proximal end surface of the elastic body is loosely fitted in the middle of the screw rod. By providing a water-permeable water stop part in which the washer and the adjacent nand are screwed together so that they can advance and retreat from the base end of the washer in the middle part, the above-mentioned conventional drawbacks can be solved and new pipes can be installed immediately after piping. To provide a water-stopping part capable of shutting off water and allowing water to pass through, which can be used for testing liquid leakage, as a plate valve for inspecting a liquid storage tank, or as a temporary valve in case of valve failure.

(Example) Below, Figure 1, Figure 2 (^), (B), Figure 3 (^
), (B), (C), (D) and Figure 4 (A)
, (B) An embodiment of the present invention will be described based on .

In Fig. 1, (1) is a water stop part that allows water to pass through, and this water stop part (1) that allows water to pass is connected to a water flow part (2) and a water stop part (3).
It consists of.

(8) is an elastic body, and the elastic body (8) has a cylindrical shape and is made of rubber or other material.

A through hole (8a) is bored in the elastic body (8) along its central axis.

A screw rod (4) is inserted into the through hole (8a).

The screw rod (4) has a right-hand thread (4C) carved therein, and a small-diameter left-hand thread (4d) extending from its base end.

A receiving plate (7) is connected to the tip of the screw rod (4) and comes into contact with the tip surface (8b) of the elastic body (81).

The receiving plate (7) is loosely fitted into the screw rod (4), and is prevented from being pulled out at the head (4e) at the tip of the screw rod (4).

The base end surface (8C) of the elastic body (8) is located in the middle of the screw rod (4).
The washer (9) is loosely fitted in contact with the washer (9).

In the middle of the screw rod (4), a nut (4a) adjacent to the washer (9) is hinged to the base end side of the washer (9) so as to be able to move forward and backward.

To use this water-permeable water stop portion (1), an outer cylinder (5) and an inner cylinder (6) are used as shown in the first figure.

The tip (5a) of the outer cylinder (5) is the screw rod (4) of the water stop part (1)
It fits into the nut (4a) provided at the base end of the inner cylinder (6
) is threadedly engaged with the tip (4b) of the screw rod (4).

The screw rod (4) is hollow, and this hollow part acts as a water passage part (2).

The diameter of this hollow part is preferably about one-third or less of the diameter of the screw rod (4), and is usually about one crane.

The reason for this is that if the diameter of the hollow part is too small, the surface tension of the liquid will act and the liquid will not pass through the water passage part (2) sufficiently.

The water-permeable water stopper t1) according to the present invention having such a configuration is shown in FIGS. 3(A), (B), (C),
As shown in (D), a new pipe (1
)) can be used to check for gas or liquid leaks.

First, at the end of the pipe (1), a water stop piece (1
) into the pipe (1)).

At this time, a water cutoff piece (1) that allows water to flow is inserted into the inner end of the pipe (lla). See Figure 3 (^).

In this state, attach the water stopper (1) that allows water to pass through, and connect the tip (5a) of the outer cylinder (5) to the screw rod (4a) provided at the base end of the screw rod (4) of the waterstopper (1). and the tip (6a) of the inner cylinder (6) is screwed together with the tip (4b) of the screw rod (4).

In this state, the inner cylinder (6) is rotated to expand the elastic body (8). See Figure 3 (B').

In addition, when installing the water stop piece (1) to the inner end of the pipe (Ila), make sure that the nut (4a) of the water stop piece (1) is not turned to the fitting part (5a) at the tip of the outer cylinder (5). At the same time, the left-hand threaded portion (4b) of the water stopper (1) is screwed into the female threaded portion (6a) at the tip of the inner cylinder (6).

With the water stopper (1) inserted into the pipe (1)), when the outer cylinder (5) is turned in the threading direction of the nut (4a), the nut (4a) will move towards the tip of the threaded rod (4). Screw it forward and remove the washer (
The elastic body (8) is strongly pressed between the support plate (7) and the elastic body (8), and the circumferential side of the elastic body (8) bulges toward the inner wall surface of the pipe (1)), causing the pipe (1)) to Obstructed. See Figure 3(C).

In this state, the pipe with pressure gauge (12) and check valve (13)
) and the pressure gas (14) are connected to the water passage part (2), the pressure gas (14) is filled into the system through the water passage part (2), and the pressure loss is inspected. It is possible to inspect newly buried piping (1)) to see if there are any leaks of gas or liquid. See Figure 3(D).

Figures 4(A) and 4(B) show other usage conditions, such as when inspecting the liquid tank (15) for liquid leakage or when inspecting the liquid tank (15).
) When the discharge valve (16) in the opening (17) is blocked due to a failure, insert the water stopper (1) that allows water to flow into the opening (17) (it may be a pre-installed opening or a newly drilled opening). The end (18a) of the branch pipe (]8) is closed and fixed as above.
A gas (19) such as air is supplied from.

Pressurized gas (21) is placed above the liquid (20) in the liquid tank (15).
) accumulates and press the liquid (20).

Gas such as air (
19), the center (1
8b), the liquid (20) flows out to the outside.

In addition, the liquid tank (1) before installing the discharge valve (16)
5) To check for liquid leakage, install a water stop piece (1) that allows water to flow through the planned installation position of the discharge valve (16) of the liquid tank (15).
) may be occluded and fixed, and the same treatment as shown in FIG. 3(D) may be performed.

(Effect of the invention) The broken water pipe repair tool according to the present invention includes a cylindrical elastic body and a through hole formed along the central axis of the elastic body, and a hollow screw rod is inserted into this through hole. A receiving plate that comes into contact with the distal end surface of the elastic body is connected to the distal end of the screw rod, and
A washer that comes into contact with the proximal end surface of the elastic body is loosely fitted in the middle part of the screw rod, and a nut adjacent to the washer is screwed into the base end of the washer so that it can move forward and backward. Because it is a water stopper, it can be used as a water stopper for testing liquid leaks immediately after installing new piping, or as a temporary valve in the event of a valve failure in a liquid storage tank. It works as a water stopper.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional explanatory diagram of a water-permeable water stop piece and its related jig according to an embodiment of the present invention, and FIG.
An explanatory diagram of the appearance of the illustrated water-permeable water-stop piece, Figure 2 (B)
is a longitudinal cross-sectional explanatory diagram of the water-permeable water stop piece shown in Figure 2 (8);
Figures 3 (A) to (D'') are explanatory diagrams of the state of use of a water-permeable water stop piece according to an embodiment of the present invention, and Figure 4 (A)
, (B) is an explanatory diagram of another usage state of the water-permeable water stop piece according to an embodiment of the present invention, and FIGS. 5(A) to (E')
6 and 7 are explanatory diagrams of conventional examples. +1) -- Water stop piece (3) - Water stop part (4a) - - Nut (81 - Elastic body (9) - Washer water passage part screw rod receiving plate - - Through hole No. (A) Figure (B) Figure CB) Figure (E) 5a Figure

Claims (1)

[Claims] (1) A cylindrical elastic body and a through hole are bored along the central axis of the elastic body, a hollow screw rod is inserted into the through hole, and the tip of the screw comes into contact with the tip end surface of the elastic body. A receiving plate is continuously provided, and a washer that comes into contact with the proximal end surface of the elastic body is loosely fitted in the middle part of the screw rod, and a nut adjacent to the washer moves forward and backward from the washer in the middle part of the screw rod. A water stop piece that can be screwed together to allow water to pass through.