JPH0547800Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a water stop valve connected in the middle of a water pipe, and particularly relates to a stop valve opening device for a ball valve type water stop valve.

[Prior art]

Water stop valves in normal water pipes are installed approximately 30 cm underground within the water stop valve housing. In order to open and close a water stop valve that is located at such a deep location and has a large resistance, it is necessary to use a stop valve with a handle of a predetermined length. Various configurations of this type of cap opener are well known. Generally, a conventional tap opener includes a holding part that engages with the end of the stopcock handle or stopper rod, and a long handle is attached to the holding part. The handle or the end of the stopper rod can be engaged with and disengaged from the stopcock regardless of the open or closed position of the stopcock.

[Problem that the idea aims to solve]

However, all conventional stop valve opening devices are configured so that they can be engaged and disengaged regardless of whether the stop valve is fully open or fully closed, so the actual opening and closing of the stop valve is left to the operator's intuition. The reality is that we are moving forward. Therefore, it is actually impossible to confirm whether the water stop valve is fully open or fully closed, and it is even more difficult to confirm whether the water stop valve is a ball valve. In particular, if the stop valve is a ball valve, if the valve is opened or closed halfway, for example when the valve is opened, if it is not fully opened, the ball's passageway will be constricted, and the constricted passage will become constricted. As the water flows forcefully through the waterway, the edges on the inlet and outlet sides of the ball's waterway are eroded by the water current, and the waterway is deformed, resulting in damage to all subsequent water. Unable to close. In addition, as shown in Fig. 5, if the ball is closed halfway during the full closing operation, a gap is created between the water passage b of the ball a and the ball seat c arranged in a water-stopping relationship. As the pressure water flows out from the water flow, the edges d on the water inlet and outlet sides of the ball's water passage and the surface of the ball seat c are corroded by the water flow, as described above, and the water passage is damaged. It also has the problem that it deforms and cannot be fully closed afterwards.

[Means to solve the problem]

As a specific means for solving the above problems, the present invention includes: a cylindrical movable member that is engaged with the tip of a stopcock; a cylindrical cap that wraps around the movable member and is fixed to the top of the stopcock; It consists of a capper that is equipped with a cup part that can be attached to and removed from the cap and a T-shaped handle, and a pair of notches are provided at symmetrical positions on the upper edge of the movable member, and a pair of notches are provided in corresponding positions on the upper edge of the movable member. four notches are provided on the upper edge of the cap at approximately 90° intervals and extend to the side surface, and any pair of these notches are formed in communication with each other on the side surface, and Provided is a water stop valve opening device characterized in that a pair of protrusions that fit into the pair of notches are provided inside the part, the protrusion of the stopcock and the notch of the movable member being connected to each other. The valve can be accurately opened and closed to the fully open or fully closed state by the notch in the cap and the notch in the cap.

【Example】

Next, the present invention will be explained in more detail with reference to illustrated embodiments. 1 is a ball valve type water stop valve;
A ball valve 2 is disposed in the body of the water stop valve, and a cylindrical portion 1a is integrally formed upwardly in correspondence with the disposed position of the ball valve.
The ball valve 2 has a pair of ball seats 3 and 4.
The water-tight relationship is maintained by the above. The lower end of a stopper rod 5 inserted from above through the cylindrical portion 1a is engaged with the ball valve 2,
The stopper rod 5 is provided with a flange portion 6, and a cylindrical rotating member 7 that presses down the flange portion and rotates while engaging with the stopper rod 5 is disposed. 7 is completely surrounded by a cylindrical cap 8 with one end closed and held rotatably. In short, the rotating member 7 is housed within the cap 8. The cap 8 is fixed to the cylindrical portion 1a with a pin 9 or the like. A pair of notches 10 and 11 are provided on the upper edge of the rotating member 7 at symmetrical positions and extending to the side surface. Also, four notches 12, 13,
14 and 15 are provided extending to the sides, and any pair of these notches corresponds to the notches 10 and 11 in the open and closed positions. Among these four notches, any pair of adjacent ones on the side surface of the cap 8 are connected to the communicating portions 16 and 1.
7 in communication. In other words, the notches 12 and 13 communicate through the communication portion 16, and the notches 1
4 and 15 are formed in a state where they are in communication with each other through the communication portion 17. Rotating member 7 and cap 8 configured in this way
That is, first, the rotating member 7 is positioned and attached to the stopper rod 5, and then the cap 8 is attached to the rotating member 7 so as to cover it. In this case, the positioning is such that after the ball valve 2 is opened or closed, the notches 10 and 11 of the rotating member 7 are positioned approximately parallel to or perpendicular to the body of the stopcock. The notch 1 is positioned so as to correspond to the notches 10 and 11.
A pair of caps 2, 13, 14, and 15 are positioned, the cap 8 is fitted thereon, and the cap 8 is fixed to the cylindrical portion 1a with a predetermined pin 9. The cap opener 18 that fits or engages with the cap 8 to open or close the cap includes a cylindrical cup portion 19;
A handle 2 having a long T-shape is integrally attached and protrudes from approximately the center of the upper surface of the cup part.
0, and inside the cup part 19 there is a pair of protrusions 21 corresponding to the notches 10, 11,
22 is integrally provided in a protruding manner. These protrusions are provided approximately parallel to the T-shaped handle.

[Explanation of operation]

The opening/closing drive of the cap opening device according to the present invention having the above configuration will be explained with reference to FIGS. 3A and 4B and FIGS. 4A and 4B. For example, in FIGS. 3A and 3B, when opening and closing the ball valve 2 using the valve opener 18 for the stopcock 1 connected in the middle of the water pipe.
When the ball valve 2 of the water stop valve 1 is in an open state and when the ball valve 2 is to be closed, a cup part 19 is inserted so as to cover the cap 8 attached to the upper part of the water stop valve 1. In this case, when the T-shaped handle of the cap opener 18 is inserted in a direction substantially parallel to the piping direction, the protrusions 21 and 22 provided inside the cup portion 19 fit into the notches 12 and 14, respectively. , the notches 10, 1 of the movable member 7 are placed in the notches.
1 coincide with each other, the protrusions 21 and 22 pass through the notches 12 and 14 and fit into the notches 10 and 11. In this state, when the handle 18 is rotated to the left as shown by arrow a, the protrusions 21 and 22 move along the communication parts 16 and 17,
The movable member 7 and the stopper rod 5 rotate, and the ball valve 2
rotates in the closing direction. Its rotation is exactly 90°
When the rotation is made, the protrusions 21 and 22 open the notch 1.
3 and 15, respectively, and the cup portion 19, that is, the cap opener 18 is in a state where it can be pulled out from the cap 8. At this time, the T-shaped handle of the cap opener 18 is in a direction substantially perpendicular to the piping direction. Therefore, the cap opener 18 cannot be pulled out at a position where it has not been rotated accurately by 90 degrees. In addition, as shown in Fig. 4A and B, the water stop valve 1
When the ball valve 2 is in the closed state and the valve is to be opened, the T-shaped handle of the valve opener 18 is turned in a direction substantially perpendicular to the piping direction, contrary to the above, and the cup portion 19 of the valve opener 18 is opened. When inserted into the cap 8, the protrusions 21 and 22 align with the notches 13 and 15, respectively, and fit into the notches 10 and 11. When the handle is rotated to the right in this state, the protrusions 21 and 22 move along the communication parts 16 and 17 as shown by arrow b, the movable member 7 and the stopper rod 5 rotate, and the ball valve 2 rotates in the direction that opens. Even in this case, the cap opener 18 cannot be pulled out at a position where it has not been accurately rotated by 90 degrees. In other words,
The rotation of the ball valve 2 by the handle 18 will not complete the work unless it is either fully open or fully closed, and as a result, the ball valve 2 may be opened or closed at a halfway position. will disappear.

[Effect of the idea]

As explained above, the water stop valve opening device according to the present invention includes a cylindrical movable member that is engaged with the tip of a stopper rod, and a cylindrical movable member that wraps around the movable member and is fixed to the upper part of the water stop valve. It consists of a cylindrical cap, a cap opener equipped with a cup part that can be fitted on and removed from the cap, and a T-shaped handle, and a pair of notches are provided at targeted positions on the upper edge of the movable member, Corresponding to the notches, four notches are provided on the upper edge of the cap at approximately 90° intervals and extend to the side surfaces, and any pair of these notches are in communication with each other on the side surfaces. By forming a pair of protrusions on the inside of the cap portion and fitting into the pair of notches, when opening and closing the water stopcock using a stopper, the cap portion can be opened and closed. The notch restricts the insertion and removal of the valve opener, which limits the opening/closing operation to an accurate 90° rotation range. If this is not completed, it will not be possible to remove the valve opener, and the valve will not be opened or closed in a half-finished state, which will prevent erosion of the edges on the water inlet and outlet sides of the water flow channel as in the conventional case. Also, it has the excellent effect of eliminating corrosion of the ball seat.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of each component constituting the valve opening device according to the present invention, Fig. 2 is a sectional view of a stopcock incorporating the same valve opening device, and Figs. 3 A and B.
4A and 4B are cross-sectional views of the main parts showing the relationship between the same valve opening device and the ball valve of the water stop valve, respectively, and Figure 5 is a midway view of the ball valve of the conventional water stop valve. It is an explanatory view showing an odd closed state. 1... Water stop valve, 1a... Cylindrical part, 2... Ball valve, 3, 4... Ball seat, 5... Stopper rod,
5a... Upper end of stopper rod, 6... Flange part, 6a
... Stopper, 7 ... Rotating member, 8 ... Cap, 9 ... Pin, 10, 11 ... Notch, 12,
13, 14, 15... Notch, 16, 17... Communication portion, 18... Cap opener, 19... Cup portion, 20...
...Handle, 21, 22...Protrusion.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A cylindrical movable member engaged with the tip of a stopcock, a cylindrical cap that wraps around the movable member and is fixed to the top of the stopcock, and the cap. A cap opener is provided with a T-shaped handle and a cup portion that can be fitted and removed, and a pair of notches are provided at targeted positions on the upper end edge of the movable member, and a pair of notches are provided at targeted positions on the upper edge of the movable member, and the capper is provided with a pair of notches corresponding to the notches. Approximately 90° to the top edge of the cap
Four notches are provided extending to the side surface with an interval of A water stop valve opening device characterized by having a pair of protrusions that fit into the stop valve. (2) The stopcock opening device according to claim (1), wherein the T-shaped handle of the stopcock opening device and the pair of protrusions provided in the cup portion are substantially parallel to each other.