JP2011133043A - Opening and closing valve with opening display function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it easy to read an opening when attached to piping. <P>SOLUTION: The opening and closing valve 20 with the opening display function includes a valve casing 22, a closing member 24, a valve lid 26, a penetrating rotary shaft 28, a cup-shaped handle 100, and an opening display mechanism 102. The cup-shaped handle 100 has a cup-shaped shell 112, and a sun gear 114. The cup-shaped shell 112 has a transparent part 112a. The opening display mechanism 102 includes a casing 120, an opening display member 122, and a planetary gear 124. The casing 120 has a view window 120b. The view window 120b is arranged to be opposed to the transparent part 112a. The opening display member 122 and the planetary gear 124 are stored in the casing 120. The opening display member 122 has a display part 122a. The display part 122a is opposed to the transparent part 112a through the view window 120b. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an opening / closing valve with an opening degree display function, and more particularly, to an opening / closing valve with an opening degree display function that is easy to read the opening degree when attached to a pipe.

  Patent document 1 discloses an opening meter. The opening meter is attached to a valve that opens and closes the flow path by rotating the valve rod one or more times. The opening meter includes a handle for rotating the valve stem, and an open / close display member having an open / close display symbol visually recognized from above the handle. This open / close display device is characterized in that a gear transmission is interposed between the handle and the open / close display member. The gear transmission device transmits to the open / close display member by reducing the amount of rotation of the handle required to make the flow path from fully open to fully closed to an angle smaller than π [rad].

  The opening meter disclosed in Patent Document 1 can accurately read the fully open state and the fully closed state.

  Patent Document 2 discloses a valve with an open / close display device. This valve with an open / close display device is a valve that is configured such that a closing member (the closing member is inserted into a valve box) can be opened and closed by a spindle, and a cup-shaped handle is connected to the spindle. A viewing window extending in the meridian direction is provided on at least the fillet portion of the cup-shaped handle. A display tube is inserted into the inner space of the cup-shaped handle. The cup-shaped handle and the display tube are arranged substantially coaxially. The display tube is attached to the valve box fixed side portion in a state where rotation around the shaft center is prevented. An inclined surface that increases in diameter toward the inner end side and faces the handle fillet portion is provided at the outer end portion in the axial direction of the display cylinder. A display tool (the display tool displays the open / closed state of the closing member) is provided on the inclined surface.

  The valve with an open / close display device disclosed in Patent Document 2 can easily read the open / closed state of the closing member.

JP 2000-179743 A JP-A-7-280134

  With the opening meter disclosed in Patent Document 1 and the valve with an open / close display device disclosed in Patent Document 2, it may be difficult to read the opening when incorporated in a valve attached to a pipe. There is a problem. This is because, when the above-described valve is attached to the pipe, the open / close display member described in Patent Document 1 and the viewing window and display tool described in Patent Document 2 may be blocked by another pipe.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an on-off valve with an opening degree display function that is easy to read the opening degree when attached to a pipe.

  The on-off valve with an opening degree display function of the present invention will be described with reference to the drawings. Note that the use of the reference numerals in the figure in this column is intended to assist understanding of the contents of the invention, and is not intended to limit the contents to the illustrated range.

  In order to solve the above-described problems, according to an aspect of the present invention, the opening / closing valve 20 with an opening degree display function includes a valve box 22, a closing member 24, a valve lid 26, a through rotary shaft 28, and a cup shape. A handle 100 and an opening degree display mechanism 102 are provided. The closing member 24 is accommodated in the valve box 22. The valve lid 26 is attached to the valve box 22. The penetrating rotary shaft 28 is for opening and closing the closing member 24. The penetrating rotary shaft 28 penetrates the valve lid 26. The cup-shaped handle 100 is attached to the penetrating rotary shaft 28. The opening display mechanism 102 is disposed in the cup-shaped handle 100. The cup-shaped handle 100 has a cup-shaped outer shell 112, a cylindrical portion 110, and a sun gear 114. The cylindrical portion 110 is provided in the cup-shaped outer shell 112. A through rotary shaft 28 is inserted into the cylindrical portion 110. The cylindrical portion 110 rotates with the rotation of the through rotation shaft 28. The sun gear 114 is provided on the outer peripheral portion of the cylindrical portion 110 and rotates with the rotation of the through rotary shaft 28. The cup-shaped outer shell 112 has a transparent portion 112a. The transparent portion 112a is disposed so as to surround the penetrating rotation shaft 28. The opening display mechanism 102 includes housings 120 and 121, opening display members 122 and 123, and a planetary gear 124. The casings 120 and 121 are provided so that the penetrating rotation shaft 28 penetrates rotatably. The casings 120 and 121 are fixed to at least one of the valve box 22 and the valve lid 26. The opening display members 122 and 123 are housed in the casings 120 and 121. The opening display members 122 and 123 are penetrated by the through-rotating shaft 28 so as to be freely rotatable. The planetary gear 124 is accommodated in the housings 120 and 121. The planetary gear 124 meshes with the sun gear 114. The planetary gear 124 rotates as the sun gear 114 rotates. The casings 120 and 121 have an internal gear 120a and viewing windows 120b and 121b. The internal gear 120 a is disposed so as to surround the sun gear 114. The internal gear 120 a meshes with the planetary gear 124. The observation windows 120b and 121b are disposed so as to face the transparent portion 112a. The opening display members 122 and 123 include a display unit 122a and a rotary shaft installation unit 122b. The display unit 122a faces the transparent portion 112a through the viewing windows 120b and 121b. The display part 122a shows opening degree information. The rotation shaft installation portion 122b is provided with a rotation shaft of the planetary gear 124.

  When the through rotation shaft 28 is rotated to open and close the closing member 24, the sun gear 114 of the cup-shaped handle 100 attached to the through rotation shaft 28 also rotates. When the sun gear 114 rotates, the planetary gear 124 rotates because the sun gear 114 and the internal gear 120a of the casings 120 and 121 mesh with the planetary gear 124. When the planetary gear 124 rotates, the opening display members 122 and 123 that are provided with the rotation shaft and through which the through rotation shaft 28 rotates freely rotate around the through rotation shaft 28. Along with this, the display portion 122 a included in the opening degree display members 122 and 123 also rotates around the through rotation shaft 28. On the other hand, the casings 120 and 121 in which the opening degree display members 122 and 123 are accommodated are fixed to at least one of the valve box 22 and the valve lid 26. Since it is fixed to at least one of the valve box 22 and the valve lid 26, the casings 120 and 121 do not rotate even when the opening degree display members 122 and 123 rotate. Since the casings 120 and 121 do not rotate, the observation windows 120b and 121b included in the casings 120 and 121 also do not rotate. Since the observation windows 120b and 121b do not rotate, the opening information of the display portion 122a that can be seen through the observation windows 120b and 121b and the transparent portion 112a of the cup-shaped outer shell 112 is accompanied by the rotation of the through rotary shaft 28 and the opening and closing of the closing member 24. Change. Thereby, even if the cup-shaped handle 100 rotates, the position where the opening degree information of the display unit 122a can be seen does not change at all. Since the position where the opening degree information can be seen is not changed, the observation windows 120b and 121b are not blocked by other piping even if the cup-shaped handle 100 is rotated. As a result, it is possible to provide the on-off valve 20 with an opening degree display function that makes it easy to read the opening degree when attached to the pipe.

  In addition, it is desirable that the display unit 122a described above has a tip 130 formed in a tapered shape. In this case, the outer peripheral surface of the distal end portion 130 faces the transparent portion 112a through the observation windows 120b and 121b, and indicates opening degree information.

  Since the outer peripheral surface of the distal end portion 130 is opposed to the transparent portion 112a through the observation windows 120b and 121b and indicates the opening degree information, the side of the cup-shaped handle 100 from the side of the cup-shaped handle 100 is also shown. It is easy to read the opening information.

  Alternatively, it is desirable that the display unit 122a described above has a cylindrical part 132 in addition to the tip part 130. The cylindrical part 132 is provided between the tip part 130 and the rotating shaft installation part 122b. In this case, in addition to the outer peripheral surface of the distal end portion 130, the outer peripheral surface of the cylindrical portion 132 is opposed to the transparent portion 112a through the observation windows 120b and 121b, and indicates opening information.

  Not only the distal end portion 130 but also the cylindrical portion 132 is opposed to the transparent portion 112a and shows the opening degree information, so that it is attached to a pipe in a place where the distal end portion 130 such as a high place is difficult to see. Even when the opening is easy to read.

  The on-off valve with an opening degree display function according to the present invention can easily read the opening degree when attached to a pipe.

It is a longitudinal cross-sectional view of the on-off valve with an opening degree display function concerning the Example of this invention. It is a top view of the on-off valve with an opening degree display function concerning the example of the present invention. It is AA sectional drawing of FIG. It is the schematic of the opening degree display member concerning the Example of this invention. It is the schematic of the opening degree display member concerning the modification of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a longitudinal sectional view of an on-off valve 20 with an opening indication function. FIG. 2 is a plan view of the on-off valve 20 with an opening degree display function. 3 is a cross-sectional view taken along the line AA in FIG. FIG. 4 is a schematic view of the opening degree display member 122.

  It is assumed that a gas cylinder (not shown) can be filled with about 15 MPa of nitrogen gas. The opening / closing valve with opening degree display function 20 according to this embodiment is attached to the neck of the gas cylinder (the opening / closing valve 20 with opening degree display function according to this embodiment is replaced with an argon gas instead of a gas cylinder for filling with nitrogen gas. Needless to say, it may be attached to a gas cylinder for filling other gases). The opening / closing valve 20 with an opening degree display function includes a valve box 22. A leg screw portion 220 formed in the valve box 22 is fixed to the neck portion of the gas cylinder with screws. An outlet nozzle 222 projects laterally from the middle of the valve box 22. A gas inlet 224 opened on the lower surface of the leg screw portion 220 opened on the end face of the outlet nozzle 222 through the inlet passage 226, the cylindrical hole of the closing valve seat 228, the closing valve chamber 230, and the outlet passage 232 in this order. It leads to the gas outlet 234. The closing member 24 is accommodated in the closing valve chamber 230. A male screw is provided on the outer periphery of the closing member 24. An internal thread is provided on the inner wall of the shut-off valve chamber 230. Since the male screw and the female screw are engaged with each other, the closing member 24 can freely move up and down in the closing valve chamber 230. Therefore, the synthetic resin valve element 240 fitted in the closing member 24 can contact the closing valve seat 228 or be separated from the closing valve seat 228.

  A safety valve 38 is provided in the blowout passage 238 branched from the middle of the inlet passage 226. The safety valve 38 includes a synthetic resin gasket 380, a copper alloy rupture plate 382, a pressing plug 384, and a ternary eutectic alloy fusible stopper 386.

  A screw hole 236 is formed in the valve box 22 in the upper part of the closing valve chamber 230. The valve lid 26 is screwed into the screw hole 236. The through rotary shaft 28 passes through the hole of the valve lid 26. Between the inner peripheral surface of the hole of the valve lid 26 and the outer peripheral surface of the through-rotating shaft 28 is sealed by two O-rings 30. Thereby, the through-rotating shaft 28 can rotate clockwise or counterclockwise with respect to the valve lid 26. A lower portion of the through rotation shaft 28 is connected to the closing member 24. A cup-shaped handle 100 is attached to the upper part of the through rotation shaft 28. When the cup-shaped handle 100 is rotated, the through rotary shaft 28 is also rotated. When the through rotary shaft 28 rotates, the closing member 24 also rotates.

  The cup-shaped handle 100 has a cylindrical portion 110, a cup-shaped outer shell 112, a sun gear 114, and a top wall 116. In the present embodiment, the cylindrical portion 110, the cup-shaped outer shell 112, the sun gear 114, and the top wall 116 are integrally formed of a transparent resin. An operator holds the cup-shaped outer shell 112 with a finger and applies torque to the cup-shaped handle 100. As a result, the cup-shaped handle 100 and thus the through rotation shaft 28 rotate.

  The cylindrical portion 110 is provided in the cup-shaped outer shell 112. A through rotary shaft 28 is inserted into the cylindrical portion 110. A handle nut 34 and a push-up spring 36 are provided in the cylindrical hole 110 a of the cylindrical portion 110. Due to the elastic force of the push-up spring 36, the annular protrusion 280 provided in the middle of the through rotary shaft 28 contacts the inner wall 262 of the valve lid 26.

  The sun gear 114 is provided on the outer peripheral portion of the cylindrical portion 110. In this embodiment, since the sun gear 114 is integrated with the cylindrical portion 110, the sun gear 114 rotates with the rotation of the through rotation shaft 28.

  The top wall 116 connects the cylindrical portion 110 and the cup-shaped outer shell 112.

  The opening degree display mechanism 102 will be described with reference to FIGS. 1 to 3. The opening indication mechanism 102 is accommodated in an annular space between the cylindrical portion 110 of the cup-shaped handle 100 and the cup-shaped outer shell 112. The opening display mechanism 102 includes a housing 120, an opening display member 122, and a planetary gear 124.

  The casing 120 is provided so that the penetrating rotation shaft 28 penetrates rotatably. The housing 120 is firmly fitted to the hexagonal head 260 of the valve lid 26 so as not to move. The opening degree display member 122 is accommodated in the housing 120 so that the penetrating rotary shaft 28 penetrates rotatably. The planetary gear 124 is accommodated in the housing 120. The planetary gear 124 meshes with the sun gear 114 as shown in FIG. The planetary gear 124 meshes not only with the sun gear 114 but also with the internal gear 120a of the housing 120. Therefore, the planetary gear 124 rotates around the through rotation shaft 28 as the sun gear 114 rotates.

  The housing 120 has an internal gear 120a and a viewing window 120b. The internal gear 120 a is disposed so as to surround the sun gear 114. The internal gear 120 a meshes with the planetary gear 124. The observation window 120b is disposed so as to face the base portion 112a of the cup-shaped outer shell 112.

  The opening degree display member 122 includes a display unit 122a and a rotary shaft installation unit 122b. The display unit 122a faces the base portion 112a of the cup-shaped outer shell 112 through the viewing window 120b. The display part 122a shows opening degree information. Thereby, when the inside is seen from the outside of the cup-shaped outer shell 112, the opening degree information of the display unit 122a can be seen through the cup-shaped outer shell 112 and the observation window 120b as shown in FIG. The rotating shaft 124a of the planetary gear 124 is fitted in the rotating shaft installation part 122b. Therefore, as the planetary gear 124 rotates around the through rotation shaft 28, the opening degree display member 122 also rotates around the through rotation shaft 28.

  The opening degree display member 122 according to the present embodiment will be described with reference to FIGS. 1 and 4. In the present embodiment, the opening degree display member 122 is made of a red synthetic resin. The opening degree display member 122 is provided with a display portion 122a facing the inner peripheral surface (and thus the observation window 120b) of the base portion 112a of the cup-shaped outer shell 112. The display portion 122a has a tip portion 130 and a cylindrical portion 132. The tip portion 130 is inclined so as to expand toward the bottom from the top in FIG. 1 (that is, to be tapered). In the case of the present embodiment, the opening degree information is printed on the tip portion 130. The opening degree information indicates the degree of opening (opening degree) of the valve body 240 with respect to the closing valve seat 228. In the case of the present embodiment, only the distal end portion 130 of the distal end portion 130 and the cylindrical portion 132 faces the viewing window 120b. As a result, only the tip portion 130 of the tip portion 130 and the cylindrical portion 132 is opposed to the inner peripheral surface of the base portion 112 a of the cup-shaped outer shell 112. The cylindrical part 132 is provided between the tip part 130 and the rotating shaft installation part 122b.

  The opening information formed at the distal end portion 130 of the opening display member 122 will be described with reference to FIG. In the case of the present embodiment, the opening degree information is printed on the front end portion 130 of the opening degree display member 122 over almost the entire surface. In other words, a closed state display area 140 provided in an angle range of approximately π / 2 [rad] and an opening intermediate display area 142 formed in a spiral shape in an angle range of approximately π [rad] are printed in a band shape in blue. The A “closed” ground color character is formed in a cut picture shape at substantially the center of the closed state display area 140. The fully open state display area 144 is provided in an angle range of approximately π / 2 [rad] depending on the ground color, and a blue character “fully open” is printed at the substantially central portion of the fully open state display area 144. Such arrangement of the opening degree information is naturally derived based on the opening degree (and thus how many through-rotating shafts 28 can rotate) and the reduction ratio of the opening degree display mechanism 102.

  As shown in FIG. 2, handle operation display information 146 is printed on an inclined surface surrounding the viewing window 120 b in the housing 120. The handle operation display information 146 includes a display surface 146a colored in a C shape, two arrows 146b and 146c indicating the opening and closing directions, and two character portions 146d and 146e displaying the directions.

  Next, the operation of the on-off valve 20 with an opening degree display function according to the present embodiment will be described. In FIG. 2, when the cup-shaped handle 100 is rotated in the clockwise direction, the through rotation shaft 28 rotates. When the through rotation shaft 28 rotates, the closing member 24 also rotates. At this time, the closing member 24 is lowered. When the closing member 24 is sufficiently lowered, the valve body 240 provided at the lower portion of the closing member 24 comes into contact with the closing valve seat 228, and the valve body 240 closes the closing valve seat 228. In this valve-closed state, as shown in FIG. 2, it is possible to look through the cup-shaped handle 100 from the viewing window 120 b through the “closed” display portion printed on the display portion 122 a of the opening degree display member 122.

  Next, referring to FIG. 2, when the cup-shaped handle 100 is rotated in the counterclockwise direction, the penetrating rotary shaft 28 rotates. When the through rotation shaft 28 rotates, the closing member 24 also rotates. At this time, the closing member 24 rises. The valve body 240 of the closing member 24 moves away from the closing valve seat 228.

  At this time, since the cup-shaped handle 100 rotates, the sun gear 114 of the cup-shaped outer shell 112 also rotates. Since the sun gear 114 rotates, the planetary gear 124 that meshes with the sun gear 114 and the internal gear 120a of the housing 120 also rotates. Since the housing 120 is firmly fitted to the hexagonal head 260 of the valve lid 26 so as not to move, the internal gear 120a of the housing 120 does not rotate. At this time, the opening degree display member 122 rotates around the through rotation shaft 28.

  Since the opening degree display member 122 rotates around the penetrating rotary shaft 28, at the time of this valve opening operation, first, a part of the opening direction display area 142 in the circumferential direction faces the viewing window 120b. That is, a part of the display area 142 in the circumferential direction can be seen from the outside of the viewing window 120b. Subsequently, the fully open state display area 144 faces the viewing window 120b. That is, the fully open state display area 144 can be seen from the outside of the viewing window 120b.

  As described above, the opening / closing valve 20 with an opening degree display function according to the present embodiment can obtain an effect that the opening degree can be easily read when attached to the pipe.

  The opening / closing valve with an opening degree display function described in each of the above-described embodiments is exemplified to embody the technical idea of the present invention, and the shape, structure, arrangement, and the like of each member are those of this embodiment. The present invention is not limited to this, and various modifications can be added.

  For example, the cup-shaped handle 100 is not limited to one that is integrally formed of a transparent resin. Only the portion of the cup-shaped handle 100 that faces the viewing window 120b may be transparent. Further, the “transparent” referred to here may be not only colorless and transparent but also transparent with color.

  Further, the housing 120 may be directly fixed to the valve box 22 instead of being fitted into the valve lid 26.

  Further, in the display unit 122a, the opening degree information may be printed not only on the tip part 130 but also on the cylindrical part 132. FIG. 5 is a schematic view showing the opening degree display member 123 and the housing 121 in this case. The casing 121 in this case has a viewing window 121b larger than the viewing window 120b shown in FIG. 4A so that the opening degree information of the cylindrical portion 132 can also be seen from the outside of the cup-shaped outer shell 112. . Thereby, the cylindrical part 132 will oppose the transparent part of the side surface of the cup-shaped outer shell 112 through the observation window 121b.

20 Opening / closing valve 22 Valve box 24 Closing member 26 Valve cover 28 Through rotary shaft 30 O-ring 34 Handle nut 36 Push-up spring 38 Safety valve 100 Cup-shaped handle 102 Opening display mechanism 110 Cylindrical part 110a Cylindrical hole 112 Cup-shaped outer shell 112a Root Portion 114 Sun gear 116 Top wall 120, 121 Housing 120a Internal gear 120b, 121b Viewing window 122, 123 Opening display member 122a Display part 122b Rotating shaft installation part 124 Planetary gear 124a Rotating shaft 130 Tip part 132 Cylindrical part 140 Closed State display area 142 Opening display area 144 Fully open state display area 146 Handle operation display information 146a Display surface 146b, 146c Arrow 146d, 146e Character part 220 Leg screw part 222 Outlet nozzle 224 Gas inlet 226 Inlet path 228 Closing valve seat 230 Closed valve Chamber 232 Outlet path 234 Gas outlet 236 Screw hole 238 Outlet path 240 Valve element 260 Hexagon head 262 Inner wall 280 Annular projection 380 Synthetic resin gasket 382 Rupture plate 384 Pressing plug 386 Soluble plug

Claims (3)

A valve box,
A closing member housed in the valve box;
A valve lid attached to the valve box;
A penetrating rotation shaft for penetrating the valve lid and opening and closing the closing member;
A cup-shaped handle attached to the penetrating rotary shaft;
An opening / closing valve with an opening degree display function provided with an opening degree display mechanism arranged in the cup-shaped handle,
The cup-shaped handle is
A cup-shaped outer shell,
A cylindrical portion provided in the cup-shaped outer shell, into which the through rotation shaft is inserted, and which rotates together with the through rotation shaft;
A sun gear provided on the outer peripheral portion of the cylindrical portion and rotating with the rotation of the through rotation shaft;
The cup-shaped outer shell has a transparent portion disposed so as to surround the penetrating rotation axis;
The opening indication mechanism is
A housing that is provided so that the penetrating rotation shaft penetrates rotatably, and is fixed to at least one of the valve box and the valve lid;
An opening display member that is housed in the housing and through which the penetrating rotation shaft penetrates rotatably;
The planetary gear is housed in the housing, meshes with the sun gear, and rotates with the rotation of the sun gear,
The housing is
An internal gear arranged to surround the sun gear and meshing with the planetary gear;
A viewing window disposed to face the transparent portion,
The opening indication member is
A display unit facing the transparent part through the viewing window and showing opening information;
An opening / closing valve with an opening degree display function, comprising: a rotation shaft installation portion on which a rotation shaft of the planetary gear is provided. The display unit has a tip formed in a tapered shape;
2. The on-off valve with an opening degree display function according to claim 1, wherein an outer peripheral surface of the tip portion is opposed to the transparent portion through the viewing window and indicates opening degree information. The display unit has a cylindrical part provided between the tip part and the rotary shaft installation part in addition to the tip part,
The outer peripheral surface of the cylindrical portion, in addition to the outer peripheral surface of the tip portion, is opposed to the transparent portion through the viewing window, and shows opening degree information. Open / close valve with opening indication function as described.

Images