Handle Fixture for Valve

Abstract

To provide a handle fixture for a valve capable of being easily manufactured and reducing manufacturing costs.SOLUTION: A handle fixture is used for a valve, the valve being configured to: upon rotational operation of a handle 2, rotate a stem 3, thereby, enabling opening / closing a flow channel by rotating integrally the stem 3 and a valve body inside a valve main body 1a along with the rotation of the stem 3; engage a fully-open position engagement portion 2a with a stopper 4 disposed on the valve main body 1a when the handle 2 is at a fully-open position of the flow channel; and engage a fully-closed position engagement portion 2b with the stopper 4 when the handle is at a fully-closed position of the flow channel. The handle 2 is made of a flat plate material and has a through hole in a thickness direction. The handle fixture for the valve comprises: an engagement opening 11 for fully opening, engageable with the stopper 4, and a mounting hole 12 for fully opening, capable of overlapping the through hole, both as of when the handle 2 is at the fully-open position; and an engagement opening 13 for fully closing, engagable with the stopper 4, and a mounting hole for fully closing, capable of overlapping the through hole, both as of when the handle 2 is at the fully-closed position.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a handle fastener for a valve. [Background technology]

[0002] For example, at construction sites for building facilities such as semiconductor manufacturing plants, there are air conditioning refrigerant pipes, compressed air pipes used in production, and water supply and drainage pipes, and numerous valves are installed along the piping routes. Before the facility is completed, inspections are conducted to ensure that fluids are flowing through the correct piping routes, and the open / closed states of the numerous valves installed along the piping routes must be set. However, during construction work, valve handles can be accidentally touched or bumped into, causing changes in opening and closing. To prevent ball valves from malfunctioning due to accidental touching or bumping, one method is to secure the handle with vinyl tape or similar. However, because this method does not reliably prevent malfunctions, valve handle fixing devices have been devised. During construction of building facilities, a valve is attached to the end of the piping on the facility side of the building, and before the production equipment used in the manufacturing process is brought in, this part is used as the piping attachment for the production equipment, a process known as "valve transfer." Fixing devices are sometimes used at this valve transfer point. A specific example of their use is explained below. During construction, when the production equipment used in the manufacturing process is brought in and the piping is connected, the valve is held securely in place during construction work on the facility side to prevent contamination of the inside of the piping. After the production equipment is installed and connected to the facility side of the building, the production equipment usually has multiple systems. To prevent the operator from mistaking the system for the valve when opening it, the valve is held in place by a fixing device, so that if the operator tries to operate the valve, the fixing device prevents it from moving. This allows the operator time to confirm that it is indeed the system for which the valve is to be opened, allowing for careful operation. When using production equipment on a different system, if the valve of the production equipment in use is closed and the valve of the production equipment on the other system is opened, the valve is held in place by a fixture to ensure proper valve opening and closing, even if the operator attempts to operate it, and also to allow time for the operator to confirm that it is really OK to open or close the valve of that system. Furthermore, in some cases, fluid may be filled up to the valve of the piping on the building equipment side, and opening a valve connected to the production equipment could result in the fluid accidentally flowing to a production equipment on a different system instead of the intended production equipment. To prevent this, the valve is held in place by a fixture to ensure proper valve opening and closing, even if the operator attempts to operate it, and also to allow time for the operator to confirm that it is really OK to open or close the valve of that system. While the valve transfer location is usually located on the building equipment side, it can also be located on the production equipment side or on both sides.

[0003] A handle fixing device has been devised which is held by the handle by surrounding it from four directions (top, bottom, left, and right) and is movable along the handle between a locked position relatively close to the valve box and an unlocked position away from the valve box, and which includes a first locking member which, in the locked position, engages with the valve box to prohibit operation of the handle and, in the unlocked position, releases the engagement to allow operation of the handle; and a second locking member which is inserted into an insertion hole formed in the handle to restrict movement of the first locking member from the locked position to the unlocked position and which, by disengaging from the insertion hole, allows movement of the first locking member from the locked position to the unlocked position (see, for example, Patent Document 1). Also disclosed is a positioning structure for a ball valve, which has a body with an inlet and an outlet, a stem attached to the body, a handle attached to the top of the stem, and the body is opened or closed by rotating the handle, a stopper rod and a connecting part attached to the edge of the perforation, a support part attached to the end of the handle, a through hole attached to the handle, a retaining ring fitted on the outside, the stopper rod restricts the position relative to the support part, the handle is rotated 180 degrees, and the ball valve can be adapted to various locations and rotated left or right to open, and when in the open state, the retaining ring can be held in the connecting part, and a locking device can be inserted into the through hole of the handle to lock the retaining ring (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-124814 [Patent Document 2] Utility Model Registration No. 3219456 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the handle fixing device described in Patent Document 1 has the problem that the first locking member is difficult to manufacture because the structure thereof is not simple, and the second locking member is also required, which increases the manufacturing cost. Furthermore, in Patent Document 2, the retaining ring is difficult to manufacture because its structure is not simple, and a connecting portion is required, which increases manufacturing costs.

[0006] The present invention has been made in light of the above-mentioned problems, and has an object to provide a handle fixing device for a valve that is easy to manufacture and allows for reduced manufacturing costs. [Means for solving the problem]

[0007] In order to achieve the above object, the handle fixing device for a valve according to the present invention comprises: The handle is made of a plate material, and is rotatably attached to the stem by passing the stem through the mounting hole and tightening a nut to the male threaded portion at the upper end of the stem; By rotating the handle The aforementioned A handle fixing device for a valve, which is capable of opening and closing a flow path by rotating a stem and rotating a ball valve element integrally with the stem inside a valve body in accordance with the rotation of the stem, and which engages a fully open position engaging portion of the handle with a stopper provided on the valve body when the flow path is in a fully open position, and engages a fully closed position engaging portion with the stopper when the flow path is in a fully closed position, is thick a fully-open engagement hole engageable with the stopper when the handle is at the fully-open position and a fully-open attachment hole superimposable with the through-hole; and a fully-close engagement hole engageable with the stopper when the handle is at the fully-close position and a fully-close attachment hole superimposable with the through-hole, The handle is made of a flat plate material that can be placed on the upper surface of the handle, and when the handle is placed on the upper surface of the handle, the fully-open engagement hole or the fully-close engagement hole is engaged with the stopper, and when the fully-open attachment hole or the fully-close attachment hole is placed on the through-hole, the handle has a stem insertion hole through which the nut of the stem passes, It is characterized by:

[0008] In the handle fastener for a valve according to the present invention, when fixing the handle in the fully open position, the fully open engagement hole is engaged with the stopper, the fully open mounting hole is aligned with the through hole of the handle, and a mounting member is passed through the fully open mounting hole and through hole to fix the handle.When fixing the handle in the fully closed position, the fully close engagement hole is engaged with the stopper, the fully close mounting hole is aligned with the through hole of the handle, and a mounting member is passed through the fully close mounting hole and through hole to fix the handle.Because the handle fastener for a valve according to the present invention has a simple configuration having a fully open engagement hole, a fully open mounting hole, a fully close engagement hole, and a fully close mounting hole, it is easy to manufacture and can reduce manufacturing costs. The handle fastener for a valve according to the present invention is made of a flat plate material that can be placed on the upper surface of the handle, and when the handle fastener is placed on the upper surface of the handle and the fully open engagement hole or the fully closed engagement hole is engaged with the stopper, and when the fully open attachment hole or the fully closed attachment hole is placed on the through hole, the stem The nut It has a stem insertion hole through which the do. this like The simple structure made of flat plate material makes it easier to manufacture and reduces manufacturing costs. Thread the nut through Since it has a stem insertion hole, it can be placed on the top surface of the handle in a stable state. The flat plate material is preferably made of a washer material having a hole in the center corresponding to the stem insertion hole. In this case, the washer can be easily manufactured by processing a commercially available washer material, which further reduces manufacturing costs.

[0009] In the handle fastener for a valve according to the present invention, it is preferable that the fully open mounting hole and the fully closed mounting hole are the same, and that a detachable mounting member is provided that penetrates the fully open mounting hole and the fully closed mounting hole together with the through hole. In this case, the fully open mounting hole and the fully closed mounting hole are the same, which makes manufacturing easier and reduces manufacturing costs. Also, since the handle has a detachable mounting member, it can be repeatedly fixed in the fully open position or the fully closed position. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a handle fixing device for a valve that is easy to manufacture and allows for reduced manufacturing costs. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a front view of a valve with a handle fixing device for a valve according to an embodiment of the present invention attached thereto, in a fully open position of a flow path of the valve. FIG. [Figure 2] FIG. 2 is a plan view of the valve shown in FIG. [Figure 3] 2 is a plan view of the valve shown in FIG. 1 in a fully closed position. FIG. [Figure 4] FIG. 2 is a plan view of the handle fixture for the valve shown in FIG. 1. [Figure 5] FIG. 10 is a plan view showing a handle fastener for a valve according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. A valve handle fastener 10 according to an embodiment of the present invention, shown in Figures 1 to 4, is used to fasten a handle 2 of a ball valve 1. The handle 2 is made of a plate material and is rotatably attached to the stem 3 by passing the stem 3 through a mounting hole and tightening a nut 3a onto the male threaded portion at the upper end of the stem 3. The handle 2 extends in a direction approximately perpendicular to the stem 3. The handle 2 has a through-hole in the thickness direction near the mounting hole. The ball valve 1 is configured so that turning the handle 2 rotates the stem 3, and as the stem 3 rotates, the valve element rotates integrally with the stem 3 inside the valve body 1a, thereby opening and closing the flow path.

[0013] The valve body 1a has a stopper 4 that extends higher than the handle 2 in the same direction as the stem 3. The handle 2 is designed so that a fully open position engaging portion 2a engages with the stopper 4 provided on the valve body 1a when the flow path is in the fully open position, and a fully closed position engaging portion 2b engages with the stopper 4 when the flow path is in the fully closed position.

[0014] The handle fastener 10 is made of a flat plate material that can be placed on the upper surface 2c of the handle 2. The plate material is made of stainless steel and has a hexagonal planar shape. As shown in Figures 1 and 2, the handle fastener 10 has a fully-open engagement hole 11 that can engage with the stopper 4 when the handle 2 is in the fully-open position, and a fully-open mounting hole 12 that can be placed on the through-hole. As shown in Figure 3, the handle fastener 10 also has a fully-close engagement hole 13 that can engage with the stopper 4 when the handle 2 is in the fully-closed position, and a fully-close mounting hole (fully-open mounting hole 12) that can be placed on the through-hole. The fully-open engagement hole 11 and the fully-close engagement hole 13 have sizes that roughly match the upper end of the stopper 4. The fully-open mounting hole 12 and the fully-close mounting hole are identical circular holes. In addition, instead of making the fully open mounting hole 12 and the fully closed mounting hole the same hole, a fully open mounting hole 12 and a fully closed mounting hole may be provided separately, and the fully open engagement hole 11 and the fully closed engagement hole 13 may be made the same hole. The handle fixing device 10 has a stem insertion hole 15 near the center, through which the nut of the stem 3 passes, when it is placed on top of the upper surface 2c of the handle 2 and the fully open engagement hole 11 or the fully closed engagement hole 13 is engaged with the stopper 4 and the fully open mounting hole (fully closed mounting hole) 12 is placed on top of the through hole (see Figure 4).

[0015] Next, the operation will be described. 1 and 2, when the handle 2 of the valve handle fastener 10 is fixed in the fully open position, the fully open engagement hole 11 is engaged with the stopper 4, the fully open mounting hole 12 is aligned with the through-hole of the handle 2, and a mounting member 14 is passed through the fully open mounting hole 12 and the through-hole to secure the handle 2 in place. The mounting member 14 may be made of nylon rivets that can be detachably attached by clamping the handle fastener 10 from both sides, or it may be made of bolts and nuts, wire (gauge wire), etc. When a detachable mounting member 14 is used, the handle 2 can be repeatedly fixed in the fully open or fully closed position.

[0016] Incidentally, in the past, in order to prevent erroneous valve opening and closing operations and to force the setting of the valve's open / close position, the handle 2 was bound tightly with tape, string, band, or the like, but these methods loosen and deteriorate over time, creating play and making it impossible to securely fasten the handle 2. In contrast, the handle fastener 10 of this embodiment uses the attachment member 14 to fasten the handle 2 without play. Furthermore, the handle fixing device in Patent Document 1 mentioned above has a structure in which the stopper (first locking member) can be easily removed by removing the lock pin (second locking member), so there is no compulsion to set the valve to open or closed, and it is necessary to provide an indication plate or the like to indicate whether the valve is open or closed.In contrast, attachment members 14 such as nylon rivets, bolts, nuts, and wire (gauge wire) require the use of a cutting tool such as a cutter or require some time and effort to remove, and are fixing methods that involve a compulsion to set the valve to open or closed. In the aforementioned Patent Document 2, a locking device is used, which requires key management, and if it is necessary to urgently or quickly change the valve from an open state to a closed state, it is necessary to find the key manager and change the state to the open state. This method can be said to have a stronger force for setting the valve to open.

[0017] As shown in Figure 3, when the handle 2 is fixed in the fully closed position, the fully closed engagement hole 13 is engaged with the stopper 4, the fully closed mounting hole (fully open mounting hole 12) is aligned with the through hole of the handle 2, and the mounting member 14 is passed through the fully closed mounting hole (fully open mounting hole 12) and the through hole to fix it. The handle fastener 10 for a valve according to the present invention has a simple configuration with the fully open engagement hole 11, the fully open mounting hole (fully closed mounting hole) 12, and the fully closed engagement hole 13, and is therefore easy to manufacture, allowing for reduced manufacturing costs. The handle fixture 10 has a simple structure made of a flat plate, making it easier to manufacture and reducing manufacturing costs. In addition, the presence of the stem insertion hole 15 allows it to be placed stably on the top surface 2c of the handle 2.

[0018] The valve handle fixture according to the embodiment of the present invention may be made of a plate material with any flat shape. Figure 5 shows a valve handle fixture according to another embodiment of the present invention. The valve handle fixture 20 is made of a circular, flat plate material that can be placed on the top surface 2c of the handle 2. The plate material can be, for example, a stainless steel or iron washer material with a hole in the center large enough to fit the nut of the stem 3 through. The handle fixing device 20 has a fully open engagement hole 21, a fully open mounting hole (fully closed mounting hole) 22, a fully closed engagement hole 23, and a stem insertion hole 25. The fully open engagement hole 21 and the fully closed engagement hole 23 are each made of a perfect circular hole into which the upper end of the stopper 4 can protrude and engage. The fully open engagement hole 21, the fully open mounting hole (fully closed mounting hole) 22, and the fully closed engagement hole 23 can be easily drilled. The fully open mounting hole 22 and the fully closed mounting hole are made of the same circular hole. The stem insertion hole 25 is made of a hole in the center of the washer material used.

[0019] The fully open engagement hole 21, the fully open mounting hole (fully closed mounting hole) 22, the fully closed engagement hole 23 and the stem insertion hole 25 of the handle fixing device 20 for a valve have the same functions as the fully open engagement hole 11, the fully open mounting hole (fully closed mounting hole) 12, the fully closed engagement hole 13 and the stem insertion hole 15 of the handle fixing device 10 for a valve described above, and the handle fixing device 20 has the same action and effect as the handle fixing device 10. The handle fixing device 20 can be easily manufactured by processing commercially available washer material, which allows for further reduction in manufacturing costs. The valve handle fixing device may be made of a flat C-shaped plate material without a stem insertion hole. [Explanation of symbols]

[0020] 1 ball valve, 1a valve body, 2 handle, 2a fully open position engagement part, 2b Fully closed position engagement part, 2c Top surface, 3 Stem, 3a Nut, 4 Stopper, 11 Fully open engagement hole, 12 Fully open mounting hole (fully closed mounting hole), 13 Fully closed engagement hole, 14 Mounting member, 15 Stem insertion hole, 20 Handle fixing device for valve, 21 Fully open engagement hole, 22 Fully open mounting hole (full-closing mounting hole), 23 Fully closed engagement hole, 25 Stem insertion hole

Claims

1. A handle made of a plate material is rotatably attached to a stem by passing the stem through a mounting hole and tightening a nut onto the male threaded portion at the upper end of the stem, the stem is rotated by turning the handle, and as the stem rotates, a ball valve body rotates integrally with the stem inside the valve body to open and close a flow path, and the handle engages a fully open position engaging portion with a stopper provided on the valve body when the flow path is in a fully open position, and engages a fully closed position engaging portion with the stopper when the flow path is in a fully closed position, The handle has a through hole in the thickness direction, a fully open engagement hole engageable with the stopper when the handle is at the fully open position and a fully open attachment hole superimposable with the through hole, and a fully closed engagement hole engageable with the stopper when the handle is at the fully closed position and a fully closed attachment hole superimposable with the through hole, The handle is made of a flat plate material that can be placed on the upper surface of the handle, and when the handle is placed on the upper surface of the handle, the fully-open engagement hole or the fully-close engagement hole is engaged with the stopper, and when the fully-open attachment hole or the fully-close attachment hole is placed on the through-hole, the handle has a stem insertion hole through which the nut of the stem passes, A handle fixing device for a valve.

2. 2. A handle fixing device for a valve according to claim 1, wherein said flat plate material is made of a washer material having a hole in the center corresponding to said stem insertion hole.

3. 3. A handle fastener for a valve according to claim 1, wherein the fully open mounting hole and the fully closed mounting hole are the same, and a detachable mounting member is provided that passes through the fully open mounting hole and the fully closed mounting hole together with the through hole.

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