JP2011127690A - Valve opening and closing jig - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a worker to fasten a handle by a constant torque in closing a valve. <P>SOLUTION: A valve opening and closing jig 1 includes a torque wrench 10 and a socket 20. The torque wrench 10 includes a head part 12 and a lever part 11 for operation, and operates by the action of a prescribed torque and informs the worker of the arrival at the prescribed torque. The socket 20 is attached to the head part 12, and includes a fitting hole 23, to which the handle of the valve is fitted unrotatably. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a valve opening / closing jig capable of tightening a handle of a valve with a predetermined torque.

  Conventionally, a container provided with a valve is used in various fields. For example, in the manufacture of compound semiconductor devices, the MOCVD method (metal organic chemical vapor deposition method) is generally used, and in order to vaporize a solid organometallic compound at room temperature and supply it to a vapor phase growth apparatus, The metal compound is filled in a container and provided to the manufacturing site. The container is connected to the vapor phase growth apparatus for supplying the vaporized organometallic compound to the vapor phase growth apparatus together with the carrier gas, and an introduction port connected to the carrier gas source for introducing the carrier gas into the container. Equipped with a discharge port. The used container is filled again with the organometallic compound and used repeatedly, and for this purpose, valves are provided at the inlet and the outlet. The valve has a handle that is manually operated at the time of opening and closing, and is opened by an operator by rotating the handle in a predetermined direction at least during filling of the organometallic compound into the container and during operation of the vapor phase growth apparatus. But otherwise it is closed.

  In such a manual valve, a jig may be used to open and close the valve. Patent Document 1 discloses a jig that assists in opening and closing a gate valve interposed in a pipe buried in the ground, for example.

JP 9-42526 A

  In a container filled with an organometallic compound, the tightening torque of the handle when closing the valve is very important. If the tightening torque is too weak, the filled organometallic compound may leak out. On the other hand, if it is too strong, it will be difficult to open manually, and the flow path in the valve will be closed. This is because an unnecessarily large force is applied to the flow path and the contact surface of the flow path and the valve body may be damaged. If the handle is rotated with an appropriate tightening torque in the closing direction of the valve, the above problem does not occur. However, the tightening torque greatly depends on the operator's force, and it is difficult to always rotate the handle with a constant tightening torque. The same applies to the case where a jig for assisting the opening and closing of the valve is used, since the valve is eventually closed by the operator's appropriate force.

  It is an object of the present invention to provide a valve opening / closing jig that enables an operator to always tighten a handle with a constant torque when closing a valve.

In order to achieve the above object, the valve opening / closing jig of the present invention is a valve opening / closing jig used to close at least a valve that is opened and closed by manually rotating a handle,
A torque wrench comprising a head portion and a lever portion for operation and configured to notify an operator that a predetermined torque has been reached by operating by a predetermined torque;
A socket that is attached to the head of the torque wrench and the valve handle fits in a non-rotatable manner,
Have

  In the valve opening / closing jig of the present invention, the socket part may be detachably attached to the head part. Further, the socket portion may have a fitting hole in which the handle is fitted from the upper surface thereof, and in this case, the handle has a shape having a plurality of convex portions that the operator hangs with fingers when manually rotating. If so, the fitting hole may have a shape having at least one concave portion into which the convex portion is inserted.

  According to the valve opening and closing jig of the present invention, the valve can be opened and closed by rotating the lever portion of the socket wrench with the valve handle fitted in the socket. Here, when the valve is closed, if the handle is rotated with a torque greater than the tightening torque set for the torque wrench, the torque wrench informs the operator that the torque has been reached, so the handle always has a constant torque. As a result, it is possible to prevent the valve from being closed with an excessive torque.

It is the perspective view seen from the upper side of the valve opening / closing jig by one Embodiment of this invention. It is the perspective view seen from the lower side of the valve | bulb opening / closing jig | tool shown in FIG. FIG. 2 is a front view of the valve opening / closing jig shown in FIG. 1. FIG. 2 is a rear view of the valve opening / closing jig shown in FIG. 1. FIG. 2 is a left side view of the valve opening / closing jig shown in FIG. 1. FIG. 2 is a right side view of the valve opening / closing jig shown in FIG. 1. FIG. 2 is a top view of the valve opening / closing jig shown in FIG. 1. FIG. 2 is a bottom view of the valve opening / closing jig shown in FIG. 1. It is a perspective view of an example of the valve | bulb which can be opened and closed with the valve | bulb opening / closing jig | tool shown in FIG. It is a top view of the fitting member shown in FIG. It is sectional drawing of the fitting member shown in FIG. It is a figure which shows the correspondence of the shape of the fitting hole of the fitting member shown to FIG. 2 and FIG. 8, and the shape of the handle | steering_wheel of the valve | bulb shown in FIG. It is the perspective view which looked at the state which attached the valve opening / closing jig | tool shown in FIG. 1 to the valve | bulb shown in FIG. 9 from the downward direction.

  1 to 8 show a valve opening / closing jig 1 according to an embodiment of the present invention viewed from various directions.

  As shown in the figure, the valve opening / closing jig 1 of this embodiment has a torque wrench 10 and a socket 20 attached to the torque wrench 10, for example, when opening and closing the valve 5 as shown in FIG. Can be used for The valve 5 is, for example, disposed in a flow channel that is opened or shut off, such as a gas introduction port or a discharge port of a container filled with the above-described organometallic compound, and is connected to the flow channel. It has a valve body 50 provided inside, and a handle 51 that is rotated forward and backward for opening and closing operations. When opening / closing the valve 5 using the valve opening / closing jig 1, the socket 20 is fitted to the handle 51.

  The type of valve that is opened / closed using the valve opening / closing jig 1 is not particularly limited, but the valve 5 shown in this embodiment has a diaphragm disposed in the flow path in the valve body 50, and the flow path is blocked by the operation of the diaphragm. It is a diaphragm valve that opens and closes. The diaphragm is operated by a valve rod that moves forward and backward by a screw mechanism, and this screw mechanism is moved forward and backward by the rotation of the handle 51.

  The torque wrench 10 includes a cylindrical lever portion 11 that is operated by an operator when the valve 5 is opened and closed, and a head portion 12 connected to the lever portion 11. The head portion 12 is configured such that the socket 20 is detachably attached, and is pivotally connected to the tip end portion of the lever portion 11 by the head pin 13 with a part thereof entering the inside of the lever portion 11. ing.

  The lever portion 11 is a portion to which an operator applies force when opening and closing the valve 5, and incorporates a toggle mechanism (not shown) that operates when a predetermined torque is applied. The torque at which the toggle mechanism operates can be set by an adjusting screw 14 provided at the end of the lever portion 11. The torque value set by the adjustment screw 14 is a scale (not shown) linked with the adjustment screw 14 and can be visually recognized by the operator through the window 11 a provided in the lever portion 11.

  The toggle mechanism is connected to the head portion 12 inside the lever portion 11 and normally holds the head portion 12 so as not to swing with respect to the lever portion 11, but a torque greater than the set torque. When the lever portion 11 acts on the lever portion 11, the toggle mechanism is actuated so that the head portion 12 swings with respect to the lever portion 11. Thus, the operator can recognize that a torque more than the set torque has been applied by a change in the operational feeling of the lever portion 11.

  As described above, the torque wrench 10 has a torque setting mechanism for setting the tightening torque and an operating mechanism for notifying the operator when the tightening torque reaches the set value. ing. These mechanisms may be known mechanisms provided in a general torque wrench. As for the torque wrench 10, the head part 12 may have a ratchet mechanism. The ratchet mechanism may also be a known ratchet mechanism used in this type of wrench, and the head portion 12 includes the ratchet mechanism, so that the operator can open and close the valve 5 without changing the lever portion 11. Can be done.

  The socket 20 includes a fitting member 22 that is fitted to a handle 51 (see FIG. 9) of the valve 5, and a cylindrical member 21 that couples the fitting member 22 and the head portion 12. One end of the cylindrical member 21 is detachably attached to the head portion 12. The fitting member 22 is fixed to the other end of the cylindrical member 21 so as not to rotate with respect to the cylindrical member 21. Specifically, in this embodiment, the center of the upper surface of the fitting member 22 is inserted into a hole (not shown) formed in the lower surface of the cylindrical member 21 (the surface opposite to the surface mounted on the head portion 12). The boss 22a (see FIGS. 10A and 10B) formed in the portion is inserted, and the fixing member 24 is passed from the outer peripheral surface of the tubular member 21 to the boss 22a of the fitting member 22 in that state, thereby fitting the fitting member 21 It is fixed.

  In order to ensure the non-rotatable fixing of the fitting member 22 to the tubular member 21, the cross-sectional shape of the hole of the tubular member 21 and the boss 22a of the fitting member 22 is preferably non-circular, and more preferably. It is a polygon. In particular, when the cross-sectional shape of the boss 22a is a regular hexagon, a hexagon bolt socket used in a general wrench can be used as the cylindrical member 21.

  A fitting hole 23 into which the handle 51 is fitted from the upper surface of the handle 51 of the valve 5 is formed on the lower surface of the fitting member 22. The shape of the fitting hole 23 viewed from the lower surface side of the fitting member 22 is a shape in which the handle 51 is fitted to the fitting member 22 so as not to rotate.

  For example, as shown in FIG. 9, a plurality of convex portions 51 a (six convex portions 51 a in FIG. 9) project outward in the radial direction for hooking an operator's finger when the handle 51 is manually rotated. Are formed at equal intervals in the circumferential direction of the handle 51.), the fitting hole 23 corresponds to these convex portions 51a and a plurality of the convex portions 51a of the handle 51 are inserted. The shape has a recess 23a (see FIGS. 2 and 8).

  FIG. 11 shows a correspondence relationship between the shape of the fitting hole 23 of the fitting member 22 and the shape of the handle 51. In FIG. 11, the handle 51 is indicated by a broken line and the fitting member 22 is indicated by a solid line in order to facilitate understanding of both shapes. As shown in FIG. 11, in a state where the handle 51 is fitted in the fitting hole 23, the convex portions 51 a of the handle 51 are positioned in the respective concave portions 23 a of the fitting hole 23, and thereby, in the fitting hole 23. The handle 51 cannot be rotated.

  In this embodiment, the number of the recesses 23a is equal to the number of the projections 51a of the handle 51. However, the number of the recesses 23a may be at least one. However, in order for the fitting member 22 to fit the handle 51 more securely and non-rotatably, the fitting member 22 preferably has a plurality of recesses 23a, and more preferably has the same number of recesses 23a as the number of the protrusions 51a. .

  The depth of the fitting hole 23 is such that a force is applied to the lever portion 11 in a state where the fitting member 22 is fitted to the handle 51 to rotate the valve opening / closing jig 1 (particularly, rotation in the direction in which the valve 5 is closed). Any depth can be used as long as the fitting member 22 does not come off the handle 51 when it is moved. In this embodiment, as shown in FIG. 12, the depth of the fitting hole 23 is made smaller than the thickness of the handle 51.

  In the valve opening / closing jig 1 configured as described above, the fitting member 22 is fitted to the handle 51, and the handle 51 rotates in a predetermined direction corresponding to the opening / closing of the valve 5 with the lever portion 11 in that state. The valve opening / closing jig 1 is rotated so as to be used.

  When the valve 5 is closed, the handle 51 can be rotated with a relatively small torque when the valve 5 is open. However, as the valve 5 is reduced, a large torque is required to rotate the handle 51. It becomes necessary. That is, although the flow path in the valve body 50 is reliably shut off, in order to close the valve 5 appropriately so that it can be opened manually without excessive force when opening, the handle 51 must be closed. There is an appropriate torque to rotate. Therefore, before the valve 5 is closed using the valve opening / closing jig 1, the torque necessary to rotate the handle 51 until the valve 5 is properly closed is set in advance by adjusting the adjustment screw 14. Yes. Once this torque is set, it is not necessary to set it each time because it is common to the same type of valve 5.

  When torque is set in the valve opening / closing jig 1, the valve 5 is closed using the valve opening / closing jig 1. As the valve 5 is closed, the torque required to rotate the handle 51 increases. When the torque reaches the torque set in the valve opening / closing jig 1 in advance, the toggle mechanism built in the lever portion 11 is activated. To do. Since the fact that the torque mechanism has been activated can be recognized by a change in the feeling during operation, the operator stops rotating the valve opening / closing jig 1 when the toggle mechanism is activated.

  As a result, the handle 51 of the valve 5 is always tightened with a constant torque regardless of the operator, and as a result, an excessive force is required when opening the valve 5 while reliably blocking the flow of fluid through the valve 5. The valve 5 can be closed properly so that it can be opened manually without the need for.

  To open the valve 5 closed using the valve opening / closing jig 1, the handle 51 of the valve 5 is rotated in the reverse direction. The reverse rotation of the handle 51 may be performed manually or using the valve opening / closing jig 1. That is, the valve opening / closing jig 1 may be configured to be used when closing the valve 5 at least.

  As described above, the valve opening / closing jig of the present invention has been described by taking a typical embodiment as an example. However, the valve opening / closing jig of the present invention is not limited to the above-described embodiment, and various modifications can be made. it can.

  For example, in the above-described embodiment, an example is shown in which the operating mechanism for notifying the operator of the tightening torque reaching the set value is the toggle mechanism. However, the operation mechanism is not limited to this, and includes an arbitrary sensor that detects torque, and notifies the operator with light and / or sound when the torque detected by the sensor exceeds a set value. Various mechanisms can be used, such as a mechanism in which the lock is released when a set torque is reached, and the socket 20 rotates freely so that the socket 20 does not rotate any further.

  Moreover, in the form mentioned above, although the socket 20 can be attached or detached with the torque wrench 10, these may be integrated. However, since the socket 20 can be attached and detached, the socket 20 can be exchanged according to the shape of the handle 51 of the valve 5 to be opened and closed, so that versatility is improved.

  Furthermore, in the embodiment described above, the socket wrench 10 has a torque setting mechanism. However, when the valve 5 to be opened and closed is specified as one type, a predetermined torque corresponding to the valve 5 is used as the operating mechanism. It is also possible to eliminate the need for a torque setting mechanism.

DESCRIPTION OF SYMBOLS 1 Valve opening / closing jig | tool 5 Valve 10 Torque wrench 11 Lever part 12 Head part 14 Adjustment screw 20 Socket 21 Cylindrical member 22 Fitting member 22a Boss 23 Fitting hole 50 Valve main body 51 Handle

Claims (4)

A valve opening / closing jig used to close at least a valve that is opened and closed by manually rotating a handle,
A torque wrench comprising a head portion and a lever portion for operation and configured to notify an operator that the predetermined torque has been reached by operating by a predetermined torque;
A socket that is attached to the head of the torque wrench and in which the handle of the valve is non-rotatably fitted;
A valve opening and closing jig.   The valve opening / closing jig according to claim 1, wherein the socket part is detachably attached to the head part.   The valve opening / closing jig according to claim 1, wherein the socket portion has a fitting hole into which the handle is fitted from an upper surface thereof. The handle has a plurality of protrusions on which an operator hangs a finger when manually rotating,
The valve fitting jig according to claim 3, wherein the fitting hole has at least one concave portion into which the convex portion is inserted.

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