TW201619535A - Valve and operating handle - Google Patents

Abstract

The subject of the present invention is to provide a valve and operating handle for increasing axial force without increasing size. The rod handle (20) of the valve (1) comprises: a first handle member (21) fixed on the open/close mechanism (4) and extended toward the direction perpendicular to the rotational shaft; a second handle member (22) mounted on the first handle member (21) and capable of reciprocating along the direction perpendicular to the rotational shaft; and a stretching spring (24) for elastically pushing the second handle member (22) toward the rotational shaft. The rod handle (20) is extended or retracted by the reciprocation movement of the second handle member (22) with respect to the first handle member (21). The rod handle (20) may be retracted by the stretching spring (24) without any external force exerted on the second handle member (22).

Description

Valve and operating handle

The present invention relates to a fluid line for a sanitary appliance or the like, and has a valve for operating a handle and an operating handle.

There has been proposed a diaphragm valve that opens and closes a fluid passage by rotating a handle to open a valve body of a diaphragm itself (for example, see Patent Document 1).

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] JP-A-2012-122491

However, when the valve is enlarged, the required shutoff loading is also increased because the pressure receiving area is increased. Therefore, sometimes it is necessary to increase the axial force of the handle, but because there is no way to increase the valve The problem of the configuration space sometimes makes it impossible to enlarge the handle.

Accordingly, it is an object of the present invention to provide a valve that can increase the axial force and an operating handle without requiring an increase in size.

In order to achieve the above object, a valve system according to the present invention includes: a valve body having a fluid passage formed therein; an operating handle that rotates around a rotating shaft; and opening and closing of the fluid passage driven by a rotational force of the operating handle The operation handle includes: a first handle member that is fixed to the opening and closing mechanism and that extends in a direction intersecting with the rotation axis; and is attached to the first handle so as to be movable back and forth in a direction intersecting the rotation axis a second handle member of the member; and a spring pushing means for biasing the second handle member toward the rotation axis, wherein the operation handle is expanded and contracted by the second handle member to reciprocately move the first handle member, and the operation handle In a state where the external force does not act on the second handle member, the elastic force is applied to the contracted state.

Further, the first handle member has a cylindrical shape having a first through hole, and one end portion thereof is fixed to the opening and closing mechanism, and the second handle member has a tubular shape in which a second through hole is formed, and the second through hole is formed. The inner diameter of the hole is larger than the outer diameter of the first handle member, and the portion of the first handle member can be accommodated in the second through hole so as to be movable back and forth along the central axis of the first handle member. It is attached to the above-mentioned first handle member.

Further, the first handle member may be configured The other end portion is provided with an outer protruding portion that protrudes outward, and an inner protruding portion that protrudes inward is provided at one end portion of the second handle member on the side of the rotating shaft, and the operating handle is extended. The outer protruding portion and the inner protruding portion are configured to be in contact with each other along the central axis.

The operation handle according to the present invention is rotated about a rotation axis, and is attached to a device having a drive unit that is driven by the rotational force of the rotation, and is characterized in that it is provided to be fixed to the drive. a first handle member extending in a direction intersecting the rotation axis; a second handle member attached to the first handle member so as to be movable back and forth in a direction intersecting the rotation axis; and the first handle member a spring pushing means for the handle member to be pushed toward the rotation axis, wherein the operation handle is stretched by the back and forth movement of the first handle member by the second handle member, and the operation handle does not act on the second handle member by an external force In the state of the state, it is in a contracted state by the above-described elastic pushing means.

According to the present invention, it is possible to provide a valve and an operating handle which can increase the axial force without increasing the size.

1‧‧‧ valve

2‧‧‧ valve body

4‧‧‧Opening and closing institutions

20‧‧‧ lever handle

21‧‧‧1st handle member

21a‧‧‧1st through hole

21B‧‧‧1st lateral protrusion

22‧‧‧2nd handle member

22a‧‧‧2nd through hole

22B‧‧‧1st inner protruding part

Fig. 1 is a perspective view showing the appearance of a valve according to an embodiment of the present invention.

Fig. 2 is a partially cutaway perspective view showing the valve in a closed state.

Fig. 3 (a) is a cross-sectional view showing a state in which the lever handle is in a stored state, and (b) is a cross-sectional view showing a state in which the lever handle is in an unfolded state.

FIG. 4 is an external perspective view showing a valve in a state in which the lever handle is rotated from the state shown in FIG. 2 toward the counterclockwise direction.

A valve and an operating handle according to an embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is a perspective view showing the appearance of the valve 1 of the present embodiment, and Fig. 2 is a partially cutaway perspective view showing the valve 1 of the embodiment in a closed state.

As shown in FIGS. 1 and 2, the valve 1 includes a valve body 2: a jig 3, an opening and closing mechanism 4, and a lever handle 20.

As shown in FIGS. 1 and 2, the valve body 2 has a fluid flowing into the passage portion 2A as a fluid inlet, a fluid outflow passage portion 2B as a fluid outlet, and a diaphragm mounting portion 2C provided with a diaphragm. . The diaphragm mounting portion 2C is located between the fluid inflow passage portion 2A and the fluid outflow passage portion 2B, and has an open upper side.

The jig 3 is composed of a pair of semi-annular members 3A, and is attached to the opening of the valve body 2 in a ring shape by a nut and a bolt, and the opening and closing mechanism 4 is fixed to the valve body 2.

The opening and closing mechanism 4 includes: a bonnet clamp 5; a hat-shaped casing 6; a rotation support portion 7; a rotation portion 8; The moving portion 9; and the diaphragm 10.

The hat-shaped jig 5 is annular and is fixed to the opening of the valve body 2 by the jig 3 .

The cap-shaped case 6 has a substantially cylindrical shape, and its lower end portion is fixed to the cap-shaped jig 5. Further, the cap-shaped casing 6 is formed with a pair of convex portions 6A (only one of which is shown in Figs. 1 and 2) which oppose each other in the diametrical direction. Each of the convex portions 6A extends in the vertical direction, and is a concave-shaped groove that is recessed toward the outside as viewed from the inside.

As shown in FIG. 2, the rotation support portion 7 has a cylindrical shape having a through hole, and its lower end portion is fixed to the upper end portion of the cap-shaped case 6 by welding or the like, and protrudes upward from the upper end of the cap-shaped case 6.

The rotating portion 8 has a stem head 11 , a shaft 12 , and a cover 13 .

The shaft head 11 has a cylindrical shape having a through hole, and is provided on the upper side of the rotation support portion 7 through the annular sheet-shaped sheet 11A. Further, the lower portion of the through hole of the shaft head 11 has a circular cross section, and the upper portion has a quadrangular cross section. The spindle head 11 is rotated on the sheet 11A so as to be centered on the central axis (rotational axis).

The shaft 12 has a cylindrical large diameter portion 12A, a cylindrical inner diameter portion 12B, and a slightly cylindrical small diameter portion 12C, and the three are integrally formed. The outer diameter of the intermediate diameter portion 12B is smaller than the outer diameter of the large diameter portion 12A, and the outer diameter of the small diameter portion 12B is smaller than the outer diameter of the intermediate diameter portion 12A. Further, the upper portion of the small diameter portion 12B has a circular cross section, and the lower portion has a quadrangular cross section. In the large diameter portion 12A, a pair of pins protruding outward in the radial direction 12D is a position that is disposed opposite to each other in the diameter direction.

The large diameter portion 12A is housed in the cap-shaped case 6 and is positioned on the lower side of the rotation support portion 7. The intermediate diameter portion 12B is a cross-sectional circular portion through which the through hole of the rotation support portion 7 and the through hole of the shaft head 11 are inserted. The quadrangular portion of the small diameter portion 12B is a cross-sectional quadrangular portion that is fitted into the through hole of the shaft head 11, and the circular portion of the small diameter portion 12B protrudes toward the upper side of the shaft head 11. By doing so, once the spindle head 11 is rotated about the rotation axis, the shaft 12 is also rotated. Further, a C-shaped ring 12E is attached to the circular portion of the small-diameter portion 12B to prevent the shaft 12 from coming off the shaft head 11.

The cover 13 is in the form of a cover cylinder covering the shaft head 11; the shaft 12; and the rotation support portion 7.

The vertical movement portion 9 has an adaptor 14 , a joint 15 , a compressor casing 16 , and a compressor 17 .

The adapter 14 is slightly cylindrical and is housed in the cap-shaped casing 6. The large diameter portion 12A is inserted into the inner side of the joint 14, and the joint 14 is movable in the vertical direction along the large diameter portion 12A. The pair of long holes 14a penetrating the inner circumferential surface and the outer circumferential surface of the adapter 14 are formed at positions facing each other in the diameter direction of the adapter. Each of the long holes 14a is formed to be inclined toward the circumferential direction of the adapter 14 at a predetermined angle. The front end portion of the pin 12D provided in the large diameter portion 12A is inserted into each of the long holes 14a. The inclination angle and length of each of the long holes 14a are appropriately set in accordance with the moving distance of the diaphragm 10 in the up-and-down direction in order to open and close the fluid passage.

Further, a pair of balls 14B are provided in the diametrical direction of the adapter 14, opposite to each other, and the slaves of the respective balls 14B are aligned. The protruding portion of the 14 is located in the convex portion 6A of the cap-shaped casing 6.

The compressor 17 is attached to the lower end of the adapter 14 via a joint 15 and a compressor casing 16.

The diaphragm 10 of the valve body is coupled to the compressor 17 by a pin 18. The outer peripheral edge of the valve body 10 is pressed and supported by the opening of the diaphragm mounting portion 2C of the valve body 2 and the cap-shaped jig 5.

The diaphragm 10 is composed of an elastic material having excellent flexion resistance, corrosion resistance, and heat resistance. The elastic material may be: a synthetic resin such as tetrafluoroethylene resin (PTFE), chlorotrifluoroethylene resin (PCTFE), tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer resin (PFA), and natural rubber and nitrile rubber. , styrene rubber, butadiene ‧ polyisobutylene synthetic rubber, polychloroprene rubber, butylene rubber, silicone rubber, polyurethane rubber, fluorinated rubber (FPM), ethylene propylene diene monomer (EPDM) Wait for the rubber.

Next, the lever handle 20 of the operating handle of this embodiment will be described.

The lever handle 20 of the present embodiment is a telescopic rod that is configured to be telescopically: a storage state that is contracted to a minimum state as shown in FIG. 1 and an expanded state that is extended to a maximum state as shown in FIG. .

Fig. 3(a) is a cross-sectional view showing the lever handle 20 in a stored state, and Fig. 3(b) is a cross-sectional view showing the lever handle 20 in an unfolded state.

The lever handle 20 includes a first handle member 21, a second handle member 22, a third handle member 23, and a tension spring 24 of a spring pushing means.

The first handle member 21 has a cylindrical shape having a first through hole 21a. One end portion of the first handle member 21 is press-fitted to the shaft head 11 and fixed so that its central axis can be orthogonal (intersecting) with the rotation axis of the shaft head 11. The other outer end portion of the first handle member 21 is provided with a first outer protruding portion 21B that protrudes outward.

The second handle member 22 has a cylindrical shape having a second through hole 22a. The inner diameter of the second through hole 22a is larger than the outer diameter of the first handle member 21, and the portion of the first handle member 21 is housed in the second. The through hole 22a is attached to the first handle member 21 so as to be movable back and forth along the central axis of the first handle member 21. The first inner protruding portion 22B that protrudes inward is provided at one end portion of the second handle member 22, and the second outer protruding portion 22C that protrudes outward is provided at the other end portion of the second handle member 22. The inner diameter of the second through hole 22a is approximately the same as the outer diameter of the first outer protruding portion 21B, and the inner diameter of the first inner protruding portion 22B is approximately the same as the outer diameter of the first handle member 21.

The third handle member 23 has a cylindrical shape having a third through hole 23a. The inner diameter of the third through hole 23a is larger than the outer diameter of the second handle member 22, and the portion of the second handle member 22 is housed in the third. The through hole 23a is attached to the second handle member 22 so as to be movable back and forth along the central axis of the second handle member 22. A second inner protruding portion 23B that protrudes inward is provided at one end portion of the third handle member 23 . The inner diameter of the third through hole 23a is approximately the same as the outer diameter of the second outer protruding portion 22C, and the inner diameter of the second inner protruding portion 23B is configured to be approximately the same as the outer diameter of the second handle member 22.

Further, the first handle member 21, the second handle member 22, and the third handle member 23 are combined in a coaxial shape. Further, the first handle member 21, the second handle member 22, and the third handle member 23 are nested.

Each end of the tension spring 24 is attached to a pin 25 provided at one end of the first handle member 21 and a pin 26 provided at the other end of the third handle member 23, and the lever handle 20 is pushed Always maintain the state of storage.

Then, in the accommodated state, the lever handle 20 is spring-loaded by the tension spring 24, and most of the first handle member 21 is housed inside the second handle member 22, and most of the second handle member 22 is housed. The state inside the third handle member 23 is the most contracted state. On the other hand, in the unfolded state of the lever handle 20, against the spring force of the tension spring 24, most of the first handle member 21 protrudes from the second handle member 22, and most of the second handle member 22 is from the third. The state in which the handle member 23 is protruded becomes the most extended state. In the state in which the external force does not act on the second handle structure 22 and the third handle member 23, the lever handle 20 is in the most contracted state (storage state) by the spring force of the tension spring 24.

In the unfolded state, the first outer protruding portion 21B abuts against the first inner protruding portion 22B, and the second handle member 22 is prevented from falling off from the first handle member 21, and the second outer protruding portion 22C and the second inner protruding portion 23B are brought into contact with each other. Then, the third handle member 23 is prevented from falling off from the second handle member 22.

Next, the operation of the lever handle 20 and the operation of the opening and closing mechanism 4 when the valve 1 is in the closed state to the open state will be described.

First, the operator holds the third handle member 23 for the lever handle 20 that is in the storage state shown in FIG. 1, and is stretched by the elastic force against the tension spring 24, so that the lever handle 20 is changed from the storage state. The expanded state shown in Figure 2. In this state, the lever handle 20 is rotated in the counterclockwise direction of FIG. 2 around the rotation axis of the spindle head 11, and the lever handle 20 is rotated to the state shown in FIG. As a result, the spindle head 11 also rotates in the counterclockwise direction. As the shaft head 11 rotates, the shaft 12 will also rotate. Once the shaft 12 is rotated, the respective pins 12D also rotate to move within the respective elongated holes 14a. Since each of the long holes 14a is inclined, the adapter 14 is moved toward the upper side. Since the balls 14B provided in the adapter 14 are positioned in the convex portion 6A of the cap-shaped casing 6, the adapter 14 does not rotate.

As the adapter 14 moves toward the upper side, the central portion of the diaphragm 10 is also pulled toward the upper side through the joint 15, the compressor casing 16, and the compressor 17. As a result, the valve 1 will become open. On the other hand, once the operator's hand leaves the third handle member 23, the lever handle 20 returns from the deployed state to the stored state due to the spring force of the tension spring 24.

When the valve 1 is to be changed from the open state to the closed state, the operator simply pulls the third handle member 23 to change the lever handle 20 from the stored state to the unfolded state, and by rotating the lever handle 20 in the clockwise direction, the diaphragm 10 It will block the fluid path and become closed. After that, if the job When the hand is released from the third handle member 23, the lever handle 20 is returned from the unfolded state to the stored state by the spring force of the tension spring 24.

As described above, according to the valve 1 of the present embodiment, the lever handle 20 includes the first handle member 21 that is fixed to the shaft head 11 of the opening and closing mechanism 4 and extends in a direction orthogonal (intersecting) with the rotation axis; The second handle member 22 of the first handle member 21 is attached to the first handle member 21 so as to be movable along the central axis of the first handle member 21, and is movable along the central axis of the second handle member 22 The third handle member 23 attached to the second handle member 22 and the tension spring 24 that constantly pushes the second handle member 22 and the third handle member 23 toward the rotation axis. The lever handle 20 is moved back and forth by the second handle member 22 against the first handle member 21, and the third handle member 23 is moved back and forth against the second handle member 22, and the lever handle 20 does not act on the second handle member in an external force. In the state of the second handle member 23 and the third handle member 23, the contraction state of the tension spring 24 is maximized.

Therefore, when the valve 1 is opened and closed, the operator holds the third handle member 23, pulls against the elastic force of the tension spring 24, and extends the lever handle 20 to be in an unfolded state. In this state, by rotating the lever handle 20, a large torque can be generated in the shaft head 11 without requiring a large operating load. In this way, even when the fluid is pressurized, or the diaphragm 10 is enlarged, the pressure receiving area is increased, and the breaking load is increased, the valve 1 can be easily turned off by using the above-mentioned large torque. . As described above, according to the valve 1 of the present embodiment, that is, the rod handle 20 is not required to be enlarged, the breaking load (axial force) can be increased.

In addition, in a state where the external force does not act on the second handle member 22 and the third handle member 23, the lever handle 20 is in a state of being most contracted by the elastic force of the tension spring 24. That is, once the operator releases the hand from the third handle member 23, the lever handle 20 is automatically returned from the deployed state to the stored state by the spring force of the tension spring 24, so that it is not necessary to separately perform the lever handle 20 The operation of the valve 1 can be improved by returning from the unfolded state to the stored state.

Further, the second handle member 22 has a cylindrical shape in which the second through hole 22a is formed, and the portion of the first handle member 21 is housed in the second through hole 21a so as to be along the central axis of the first handle member 21. The manner of moving back and forth is attached to the first handle member 21. The third handle member 23 has a cylindrical shape having a third through hole 23a, and the portion of the second handle member 22 is housed in the third through hole 23a so as to be movable back and forth along the central axis of the second handle member 22. Installed in the second handle member 22.

Since the first handle member 21, the second handle member 22, and the third handle member 23 are formed in a nested structure, the expansion ratio of the lever handle 20 can be improved.

In the unfolded state, the first outer protruding portion 21B and the first inner protruding portion 22B are in contact with each other along the central axis of the first handle member 21, and the second outer protruding portion 22C and the second inner protruding portion are opposed to each other. 23B is abutting against each other along the central axis of the first handle member 21. According to such a configuration, the second handle member 22 can be prevented from falling off from the first handle member 21, and the second outer protruding portion 22C and the second inner protruding portion 23B can be prevented from coming into contact with each other, thereby preventing the third handle member 23 from being removed from the second handle. Member 22 Fall off.

The invention is not limited to the embodiments described above. Various additions, changes, and the like can be made as long as the applicant is within the scope of the present invention.

For example, in the above embodiment, the valve 1 is a diaphragm valve, but may be another type of valve, and may be, for example, a butterfly valve, a ball valve, a globe valve, a gate valve, or the like. Further, although the tension spring 24 is used as the spring pushing means, it may be a spiral spring.

Further, although the lever handle 20 is constituted by three handle members (the first to third handles 21 to 23), the number of the handle members is not limited to three, and two or four or more members may be used.

Further, although the entire first handle member 21 is orthogonal to the rotation axis of the spindle head 11, only one end portion of the spindle head 11 inserted into the first handle member 21 may be orthogonal to the rotation axis, and the slave shaft may be The 11 protruding part is inclined toward the one end.

Further, in the above-described embodiment, the outer diameter and the inner diameter of the third handle member 23 are larger than the first and second handle members 21 and 22, and the first and second handle members 21 and 22 are housed in the third handle member 23. . However, the outer diameter and the inner diameter of the first handle member 21 may be larger than the second and third handle members 22 and 23, and the second and third handle members 22 and 23 may be housed in the first handle member 21 . .

In the above-described embodiment, the lever handle 20 is attached to the valve 1. However, the lever handle 20 is not limited thereto, and any other device (for example, a press device or the like) may be used as the drive unit. The rotational force of 20 is driven to transmit the drive to other components. this The first to third handle members 21 to 23 are cylindrical, but may have a rectangular tube shape.

20‧‧‧ lever handle

21‧‧‧1st handle member

21a‧‧‧1st through hole

21B‧‧‧1st lateral protrusion

22‧‧‧2nd handle member

22a‧‧‧2nd through hole

22B‧‧‧1st inner protruding part

22C‧‧‧2nd lateral protrusion

23‧‧‧3rd handle member

23a‧‧‧3rd through hole

23B‧‧‧2nd inner protrusion

24‧‧‧ stretching spring

25‧‧ ‧ sales

26‧‧ ‧ sales

Claims (4)

A valve having a valve body formed with a fluid passage, an operating handle that rotates around a rotating shaft, and an opening and closing mechanism for the fluid passage that is driven by a rotational force of the operating handle, the operating handle, The first handle member that is fixed to the opening and closing mechanism and extends in a direction intersecting the rotation axis, and is attached to the second handle member in a second direction so as to be movable back and forth in a direction intersecting the rotation axis a handle member; and a spring pushing means for biasing the second handle member toward the rotating shaft, wherein the operating handle is expanded and contracted by the second handle member reciprocatingly moving the first handle member, and the operating handle is When the external force does not act on the second handle member, the elastic force is applied to the contracted state. The valve according to the first aspect of the invention, wherein the first handle member has a cylindrical shape having a first through hole, and one end portion thereof is fixed to the opening and closing mechanism, and the second handle member is formed a tubular shape of the second through hole, wherein an inner diameter of the second through hole is larger than an outer diameter of the first handle member, and a portion of the first handle member is housed in the second through hole so as to be along the first 1 The movement of the central axis of the handle member back and forth is mounted on The first handle member is described. The valve according to the first or second aspect of the invention, wherein the other end portion of the first handle member is provided with an outer protruding portion that protrudes outward, and on the side of the rotating shaft of the second handle member The one end portion is provided with an inner protruding portion that protrudes toward the inner side, and the outer protruding portion and the inner protruding portion are configured to be in contact with each other along the central axis in a state in which the operating handle is extended. An operation handle that is rotated about a rotation axis and is attached to a device having a drive unit that is driven by a rotational force of the rotation, and is characterized in that: the drive unit is fixed to the drive unit, and has an orientation a first handle member extending in a direction in which the rotating shaft intersects; a second handle member attached to the first handle member so as to be movable back and forth in a direction intersecting the rotating shaft; and the second handle member facing the second handle member In the above-described operation handle, the above-described operation handle is stretched and contracted by the second handle member to the first handle member, and the operation handle is in a state where the external force does not act on the second handle member. By the above-described elastic pushing means, it becomes a contracted state.