JP2020172991A - Fluid control valve device - Google Patents

Abstract

To simplify a device as much as possible and to decrease complication of processing.SOLUTION: A body 1 includes an inlet side passage 4, an outlet side passage 5, a first passage 7 which is connected to the inlet side passage 4 via a hollow connection part 6 and opened/closed by a control valve 61 of a control valve part 60, and a second passage 8 connected to the connection part 6. The connection part 6 is provided with a switch ball valve 20. The switch ball valve 20 has one opening 23 and the other opening 24 and forms a communication passage 25 which communicates an inlet connection port 10 and a first opening port 11 at a first position A1 and communicates the inlet connection port 10 and a second connection port 12 at a second position A2. The communication passage 25 is bent and formed into a V-shaped so as to close the first connection port 11 and the second connection port 12 with general surfaces 26, 27 of the switch ball valve 20 where a pair of openings 23, 24 of the communication passage 25 are not formed at a third position A3. The first connection port 11 is provided with a first seal ring 33 and the second connection port 12 is provided with a second seal ring 34.SELECTED DRAWING: Figure 2

Description

The present invention relates to a fluid control valve device that controls various fluids such as water, steam, and oil by opening and closing the control valve.

Conventionally, as a fluid control valve device, for example, a pressure reducing valve technique proposed by the applicant of the present application and published in Japanese Patent Application Laid-Open No. 2003-322268 (Patent Document 1) is known. As shown in FIG. 10, the fluid control valve device Sa includes a main body 100 having a fluid inlet 101 and an outlet 102, and opens and closes the control valve 103 for the fluid extending from the inlet 101 to the outlet 102 to the main body 100. A control valve unit 104 controlled by the fluid is provided. The main body 100 is connected to the inlet side passage 105 on the inlet 101 side, the outlet side passage 106 on the outlet 102 side, and the inlet side passage 105 by disconnecting the hollow connecting portion 107 to reach the outlet side passage 106 and the control valve portion 104. The first passage 108 opened and closed by the control valve 103 of the above, and the second passage 109 as a so-called bypass passage connected to the inlet side passage 105 via the connecting portion 107 and reaching the outlet side passage 106 are provided.

The connecting portion 107 is provided with a switching ball valve 110. The switching ball valve 110 is rotatably provided with an orthogonal axis orthogonal to a predetermined cross section (cross section shown in FIG. 10) as an axis, and is rotated to communicate the inlet side passage 105 and the first passage 108 with the second passage. First position A1 (FIG. 10 (a)) for blocking 109, second position A2 (FIG. 10 (b)) for blocking the first passage 108 by communicating the entrance side passage 105 and the second passage 109, entrance side It is located at the third position A3 (FIG. 10 (c)) that blocks both the passage 105 and the first passage 108 and the second passage 109. The switching ball valve 110 is formed with a T-shaped communication passage 111 composed of a straight path having a first opening a and a second opening b and a right-angled path perpendicular to the straight path having a third opening c. ing. Further, the main body 100 includes a switching ball valve mounting port 112 for mounting the switching ball valve 110. The switching ball valve mounting port 112 is provided with a closing body 113 that can be attached and detached by screwing means. Further, the main body 100 is provided with a tubular inlet-side body 114 in which the inlet-side passage 105 is formed so as to be detachable via a screw means. At the opening edges of the inlet side passage 105, the first passage 108, and the second passage 109 with respect to the connecting portion 107, three ring-shaped seal rings 115, 116, and 117, each of which the surface of the switching ball valve 110 is in sliding contact with each other, are provided. It is provided.

Further, the first passage 108 and the second passage 109 are connected to the exit side passage 106 via the hollow merging portion 118. The merging portion 118 is provided with an accompanying ball valve 120. The accompanying ball valve 120 is rotatably provided with an orthogonal axis orthogonal to a predetermined cross section (cross section of FIG. 10) as an axis, and is rotated so that the first passage 108 and the outlet side are provided at the first position A1 of the switching ball valve 110. The first position B1 (FIG. 10A) that communicates with the passage 106 and blocks the second passage 109 and the outlet side passage 106, and the second passage 109 and the outlet side passage 106 at the second position A2 of the switching ball valve 110. 3 that shuts off the first passage 108, the second passage 109, and the outlet side passage 106 at the second position B2 (FIG. 10B) that shuts off the communication first passage 108 and the third position A3 of the switching ball valve 110. It is located at the number position B3 (FIG. 10 (c)). The accompanying ball valve 120 is formed with a T-shaped continuous path 121. Further, the main body 100 includes an accompanying ball valve mounting port 122 for mounting the accompanying ball valve 120. The accompanying ball valve mounting port 122 is provided with a closing body 123 that can be attached and detached by screwing means. Further, the main body 100 is provided with a tubular outlet-side body 124 in which the outlet-side passage 106 is formed so as to be detachable via a screw means. Then, at the opening edges of the outlet side passage 106, the first passage 108, and the second passage 109 with respect to the merging portion 118, three ring-shaped seal rings 125, 126, 127, each of which the surface of the accompanying ball valve 120 is in sliding contact with each other, are provided. It is provided.

The control valve unit 104 attaches the control valve 103 to the tip of the rod 130 that can move forward and backward, attaches the rod 130 to the diaphragm 131, urges the diaphragm 131 with the coil spring 132, and uses the control valve 103 to connect the first passage 108. When the coil spring 132 is constantly opened and a pressure chamber 134 is formed in the lower part of the diaphragm 131 through which the fluid on the outlet 102 side enters through the connecting path 133 and the pressure of the fluid on the outlet 102 side exceeds a predetermined pressure, the coil spring 132 The rod 130 is retracted against the urging force to close the first passage 108.

Then, at the time of depressurization control, as shown in FIG. 10A, the switching ball valve 110 is set to the first position A1 and the accompanying ball valve 120 is set to the first position B1. In this state, the control valve 103 is always open to allow the fluid to flow, and when the pressure in the pressure chamber 134 increases, the control valve 103 is closed to stop the flow of the fluid and reduce the pressure on the outlet 102 side.
Further, at the time of bypass control, as shown in FIG. 10B, the switching ball valve 110 is set to the second position A2, and the accompanying ball valve 120 is set to the second position B2. In this case, since the first passage 108 is closed and the second passage 109 becomes effective, the fluid on the inlet 101 side is discharged to the outlet 102 side through the second passage 108.
Further, at the time of stop control, as shown in FIG. 10C, the switching ball valve 110 is set to the third position A1, and the accompanying ball valve 120 is set to the third position B3. In this case, since both the inlet side passage 105 and the outlet side passage 106 are closed, the flow of the fluid on the inlet 101 side is stopped.

Japanese Unexamined Patent Publication No. 2003-322268

By the way, in this conventional fluid control valve device Sa, since the communication passage 111 of the switching ball valve 110 is formed in a T shape, the processing becomes complicated by that much, and the passages 105, 108, 109 are also formed. The surface that closes the connection port is the general surface of the switching ball valve 110 between the third opening c and the first opening a of the communication passage 111, and the switching ball valve 110 between the third opening c and the second opening b. On the general side, since the area is small, it is limited to the general side of the switching ball valve 110 on the opposite side of the third opening c, and therefore the connection port is closed at one place. Therefore, the seal rings 115, 116, 117 must also be provided at three locations, the opening edge of the entrance side passage 15, the opening edge of the first passage 108, and the opening edge of the second passage 109, which makes the processing of the device complicated and increases the number of parts. There was a problem of being there.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a fluid control valve device in which the device is simplified as much as possible to reduce the complexity of processing.

In order to achieve such an object, the fluid control valve device of the present invention is provided with a main body having a fluid inlet and outlet, and a control valve that controls the fluid from the inlet to the outlet in the main body by opening and closing the control valve. In a fluid control valve device equipped with a part
It is connected to the main body via a hollow connection portion to the inlet side passage on the inlet side, the outlet side passage on the outlet side, and the inlet side passage to reach the outlet side passage and is opened and closed by the control valve of the control valve portion. The first passage to be constructed and the second passage connected to the entrance side passage via the connection portion are provided.
The center lines X0, X1, and X2 of the entrance connection port of the entrance side passage, the first connection port of the first passage, and the second connection port of the second passage that open to the connection portion are T on a predetermined cross section. It is connected to the connecting portion so as to intersect in a character shape, and the connecting portion is rotatably provided with an orthogonal axis Y passing through the intersection of the center lines X0, X1 and X2 and orthogonal to the predetermined cross section as an axis. The first position that is moved to connect the entrance side passage and the first passage and block the second passage, the second position that connects the entrance side passage and the second passage and blocks the first passage, and the entrance. It is equipped with a switching ball valve located at a third position that blocks both the side passage and both the first passage and the second passage.
The center line X1 of the first connection port of the first passage and the center line X2 of the second connection port of the second passage are orthogonal to the center line X0 of the entrance connection port of the entrance side passage, and the first The center line X1 of the first connection port of the passage and the center line X2 of the second connection port of the second passage are coaxially continuous to form the entrance side passage, the first passage and the second passage.
The switching ball valve has a pair of openings of one opening and the other opening on the surface of the switching ball valve, passes through the intersection of the center lines X0, X1, and X2, and at the first position, the inlet connection port and the first. A communication passage that communicates with the connection port and communicates between the entrance connection port and the second connection port is formed at the second position, and a pair of openings of the communication passage is not formed at the third position. It is configured to be bent in a V shape so as to close the first connection port and the second connection port by the general surface of the switching ball valve.

As a result, the communication passage of the switching ball valve is formed in a V shape, which facilitates the processing as compared with the case of processing a T-shaped communication passage having three openings as in the conventional case. be able to. Further, the connection at the first position, the second position, and the third position of the switching ball valve is simplified because it is only necessary to match the pair of openings of one opening and the other opening of the communication passage with the corresponding connection ports. .. Further, the general surface of the switching ball valve in which the pair of openings of the communication passage is not formed includes a general surface having a surface on the far side between the pair of openings and a general surface having a surface on the side where the pair of openings are close to each other. On the one hand, the general surface is wider than the general surface on the opposite side of the conventional T-shaped third opening, and the other general surface is the general surface between the conventional T-shaped third opening and the first opening. Since it is wider than the surface or the general surface between the third opening and the second opening, the sealing property of the closed portion can be ensured, and the parts and the structure can be simplified accordingly. This also means that the diameter of the connection port can be made the same, and the switching ball valve can be made smaller to reduce the size. That is, since the general surface of the switching ball valve can be widened, even if the switching ball valve is made small, the size of the general surface is not substantially narrowed, so that the size can be reduced. ..

Then, if necessary, a ring-shaped first seal ring with the surface of the switching ball valve in sliding contact is provided on the opening edge of the first connection port, and the surface of the switching ball valve is provided on the opening edge of the second connection port. A ring-shaped second seal ring that is in sliding contact is provided, and a ring-shaped seal ring that is in sliding contact with the surface of the switching ball valve is not provided at the opening edge of the inlet connection port.

As a result, the ring-shaped seal ring on which the surface of the switching ball valve is in sliding contact is not provided on the opening edge of the inlet connection port, so that the number of seal rings is reduced by one as compared with the conventional case, and therefore the number of parts is reduced. At the same time, it is possible to reduce the processing of the portion where the seal ring is provided, and the structure can be simplified accordingly. Further, since the first seal ring and the second seal ring are located on a straight line of the center lines X1 and X2, the support of the switching ball valve is held by the seal ring facing 180 °, which is the only amount. Support can be stabilized.

In this case, if necessary, the main body includes a main body including a part of the exit side passage including the outlet and a main body including the first connection port and forming all or a part of the first passage. Is provided with a switching ball valve mounting port that communicates with the connecting portion and has the center line X2 of the second connecting port of the second passage as an axis so that the switching ball valve can be mounted from the outside in the connecting portion. It is provided so as to be detachably attached to the ball valve mounting port, and the switching ball valve mounting port is closed at the time of mounting, and a closed body including the second connection port and forming all or a part of the second passage is provided.
As a result, the second seal ring is attached to the opening edge of the second connection port of the closed body. The first seal ring and the second seal ring can be easily attached. Further, unlike the conventional case, it is not necessary to provide a tubular inlet-side body having an inlet-side passage formed detachably via a screw means, so that the processing of the main body can be reduced and the case of the main body can be reduced. The structure can also be simplified.

Further, if necessary, the diameter of the entrance connection port is D0, the diameter of the first connection port is D1, the diameter of the second connection port is D2, and the diameters of one opening and the other opening of the communication passage are Dm. When Dm <D0, Dm <D1, Dm <D2, D1 <D0, D2 <D0 are set, one opening of the communication passage opens in the entrance connection port at the first position, and the other opening of the communication passage opens. Opens in the first connection port, the other opening of the communication passage opens in the entrance connection port at the second position, and one opening of the communication passage opens in the second connection port. The configuration is such that the bending angle θ of the center line of is determined. As a result, one opening and the other opening of the connecting passage are opened in the connection port, so that the one opening and the other opening are not blocked and narrowed around the connection port, so that the flow path is surely secured. And the flow of fluid can be smoothed.

Furthermore, if necessary, the second passage is configured as a bypass passage leading to the exit side passage. It can be applied to a control valve device with a bypass passage.

Further, if necessary, it can be configured as a steam trap that automatically discharges ascites of steam as a fluid by controlling the opening and closing of the control valve of the control valve unit.
Further, it can be configured as a pressure reducing valve for reducing the pressure of the fluid on the outlet side by controlling the opening and closing of the control valve of the control valve unit.

When configured as this pressure reducing valve, if necessary, the first passage and the second passage are connected to the outlet side passage via a hollow merging portion, and the outlet merging of the outlet side passage that opens to the merging portion. The mouth, the first merging port of the first passage, and the second merging port of the second passage are connected to the merging portion so that these center lines M0, M1, and M2 intersect in a T shape on a predetermined cross section. At the first position of the switching ball valve, the confluence portion is rotatably provided with an orthogonal axis N passing through the intersection of the center lines M0, M1 and M2 and orthogonal to the predetermined cross section as an axis. No. 1 position for communicating the first passage and the second passage with the outlet side passage, and No. 2 for communicating the second passage and the outlet side passage at the second position of the switching ball valve and blocking the first passage. Equipped with an accompanying ball valve that is positioned and rotated according to the switching ball valve.
The center line M0 of the exit merging port of the exit side passage and the center line M1 of the first merging port of the first passage are orthogonal to the center line M2 of the second merging port of the second passage, and the exit. The center line M0 of the exit merging port of the side passage and the center line M1 of the first merging port of the first passage are coaxially connected to form the exit side passage, the first passage and the second passage.
The accompanying ball valve has three openings on the surface of the accompanying ball valve to form a T-shaped continuous path passing through the intersection of the center lines M0, M1 and M2, and the continuous path is formed through the first opening and the first opening. It is configured to include a straight road having a second opening and being on the same axis as each other and an intersection having a third opening and orthogonal to the straight road.
At the first position, the outlet merging port and the first opening are communicated, the first merging port and the second opening are communicated, the second merging port and the third opening are communicated, and the second opening is communicated. At the position, the outlet merging port and the third opening can be communicated with each other, and the first merging port can be blocked by the general surface of the accompanying ball valve on the opposite side of the third opening. ..

In this case, the outlet side including the merging portion and the exit side passage of the main body is orthogonal to the center line M0 of the exit merging port of the exit side passage and the center line M1 of the first merging port of the first passage. It is cut along a plane passing through the portion, and divided into a main body including the first merging port and forming all or a part of the first passage and an outlet body including the outlet side passage, and the outlet body is used as the main body. On the other hand, it can be attached and detached, and with the outlet body removed, the accompanying ball valve can be attached to the inside of the confluence from the outside.
A ring-shaped inner seal ring is provided on the opening edge of the first merging port so that the surface of the accompanying ball valve is in sliding contact with the opening edge, and a ring-shaped outer sealing ring is provided on the opening edge of the outlet merging port so that the surface of the accompanying ball valve is in sliding contact. Is provided, and a ring-shaped seal ring with which the surface of the accompanying ball valve is in sliding contact is not provided at the opening edge of the second merging port.

As a result, a ring-shaped seal ring on which the surface of the accompanying ball valve is in sliding contact is not provided at the opening edge of the second confluence, so that the number of seal rings is reduced by one as compared with the conventional case, and therefore the number of parts is reduced. At the same time, the processing of the portion where the seal ring is provided can be reduced, and the structure can be simplified accordingly. Further, since the inner seal ring and the outer seal ring are located on a straight line of the center lines M0 and M1, the support of the accompanying ball valve is held by the seal ring facing 180 °, and the support is increased accordingly. Can be stabilized. Further, since the accompanying ball valve can be mounted from the outside inside the merging portion with the outlet body removed, the structure of providing the accompanying ball valve mounting port and closing with the closing body becomes unnecessary as in the conventional case. , It is no longer necessary to attach the tubular outlet-side body with the outlet-side passage formed via screwing means, so that the processing of the main body can be reduced and the case structure of the main body is greatly simplified. can do.

In this case, the diameter of the outlet merging port is E0, the diameter of the first merging port is E1, the diameter of the second merging port is E2, and the diameters of the first opening, the second opening, and the third opening of the continuous path are set. When Em is set, Em <E0, Em <E1, Em <E2 are set, and at the first position, the first opening of the continuous road opens in the exit confluence, and the second opening of the continuous road opens. It opens in the first confluence, the third opening of the continuous road opens in the second confluence, and at the second position, the first opening of the continuous road opens in the confluence, and the continuous road It is effective that the second opening opens in the second merging port and the third opening of the continuous road opens in the outlet merging port. As a result, since each of the three openings of the continuous path opens into the merging port, each opening is not blocked and narrowed around the merging port, so that the flow path can be reliably secured. The flow of fluid can be smoothed.

As described above, according to the fluid control valve device of the present invention, the communication passage of the switching ball valve is formed in a V shape. Therefore, as in the conventional case, a T-shaped communication passage having three openings is used. The processing can be facilitated as compared with the case of processing. Further, the connection at the first position, the second position, and the third position of the switching ball valve is simplified because it is only necessary to match the pair of openings of one opening and the other opening of the communication passage with the corresponding connection ports. .. Further, in the general surface of the switching ball valve in which the pair of openings of the communication passage is not formed, the general surface of the surface on the side close to the pair of openings is the general surface between the conventional T-shaped third opening and the first opening. The general surface on the side that is wider than the general surface between the third opening and the second opening and the pair of openings on the far side is wider than the general surface on the side opposite to the conventional T-shaped third opening. The sealing performance of the part can be ensured, and the parts and structure can be simplified accordingly. This also means that the diameter of the connection port can be made the same, and the switching ball valve can be made smaller to reduce the size. That is, since the general surface of the switching ball valve can be widened, even if the switching ball valve is made small, the size of the general surface is not substantially narrowed, so that the size can be reduced. ..

A fluid control valve device (pressure reducing valve) according to an embodiment of the present invention is shown, (a) is a perspective view seen from above, and (b) is a perspective view seen from below. It is sectional drawing which shows the fluid control valve device (pressure reducing valve) which concerns on embodiment of this invention in the state at the time of pressure reducing control. It is sectional drawing which shows the fluid control valve device (pressure reducing valve) which concerns on embodiment of this invention in the state at the time of bypass control. It is sectional drawing which shows the fluid control valve device (pressure reducing valve) which concerns on embodiment of this invention in the state at the time of stop control. A switching ball valve used in the fluid control valve device according to the embodiment of the present invention is shown, (a) is a perspective view, and (b) is a cross-sectional perspective view. The fluid control valve device (steam trap) according to the embodiment of the present invention is shown, (a) is a perspective view seen from above, and (b) is a perspective view seen from below. It is sectional drawing which shows the fluid control valve device (steam trap) which concerns on embodiment of this invention in the state at the time of trap control. It is sectional drawing which shows the fluid control valve device (steam trap) which concerns on embodiment of this invention in the state at the time of bypass control. It is sectional drawing which shows the fluid control valve device (steam trap) which concerns on embodiment of this invention in the state at the time of stop control. It is sectional drawing which shows an example of the conventional fluid control valve device.

Hereinafter, the fluid control valve device according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.
As shown in FIGS. 1 to 4, the fluid control valve device S according to the embodiment of the present invention is a pressure reducing valve having a function of controlling the pressure reduction of the fluid. The fluid control valve device S includes a main body 1 having a fluid inlet 2 and an outlet 3, and the main body 1 is provided with a control valve unit 60 that controls the fluid from the inlet 2 to the outlet 3 by opening and closing the control valve 61. It is configured to prepare.

The main body 1 is connected to the inlet side passage 4 on the inlet 2 side, the outlet side passage 5 on the outlet 3 side, and the inlet side passage 4 via a hollow connecting portion 6, and reaches the outlet side passage 5 as well as the control valve portion 60. A first passage 7 opened and closed by the control valve 61 and a second passage 8 connected to the inlet side passage 4 via a connecting portion 6 are provided.
The center lines X0, X1 and X2 of the entrance connection port 10 of the entrance side passage 4 opening to the connection portion 6, the first connection port 11 of the first passage 7 and the second connection port 12 of the second passage 8 are predetermined. It is connected to the connecting portion 6 so as to intersect in a T shape on a cross section (cross section shown in FIGS. 2 to 4). Specifically, the entrance side passage 4, the first passage 7, and the second passage 8 have the center line X1 of the first connection port 11 of the first passage 7 with respect to the center line X0 of the entrance connection port 10 of the entrance side passage 4. The center line X2 of the second connection port 12 of the second passage 8 is orthogonal to each other, and the center line X1 of the first connection port 11 of the first passage 7 and the center line X2 of the second connection port 12 of the second passage 8 are aligned. It is formed coaxially and continuously.

The connecting portion 6 is provided with a switching ball valve 20 also shown in FIG. The switching ball valve 20 is rotatably provided with an orthogonal axis Y passing through the intersection of the center lines X0, X1 and X2 and orthogonal to a predetermined cross section as an axis, and is rotated to include the inlet side passage 4 and the first passage 7. The first position A1 (FIG. 2) that communicates with the second passage 8 and blocks the first passage 7, the second position A2 (FIG. 3) that communicates the entrance side passage 4 and the second passage 8 and blocks the first passage 7. It is located at a third position A3 (FIG. 4) that blocks both the passage 4, the first passage 7, and the second passage 8. As shown in FIG. 1, a rotating shaft 21 having an orthogonal axis Y as an axis for rotating the switching ball valve 20 is rotatably attached to the main body 1, and as shown in FIG. The switching ball valve 20 is provided with an engaging recess 22 which is engaged and connected to the inner end of the rotating shaft 21.

The switching ball valve 20 has a pair of openings of one opening 23 and the other opening 24 on the surface of the switching ball valve 20, passes through the intersection of the center lines X0, X1, and X2, and at the first position A1, the inlet connection port 10 And the first connection port 11 are communicated with each other, and a communication passage 25 is formed at the second position A2 to communicate the entrance connection port 10 and the second connection port 12. The communication passage 25 is V so as to block the first connection port 11 and the second connection port 12 by the general surface of the switching ball valve 20 in which the pair of openings 23 and 24 of the communication passage 25 are not formed at the third position A3. It is bent in a character shape. The general surface is composed of a general surface 26 having a pair of openings 23 and 24 on the far side, and a general surface 27 having a pair of openings 23 and 24 on the near side. In the embodiment, as shown in FIG. 4, the first connection port 11 is closed by one general surface 26, and the second connection port 12 is closed by the other general surface 27. However, on the contrary, the first connection port 11 may be closed by the other general surface 27, and the second connection port 12 may be closed by the one general surface 26.

More specifically, the diameter of the inlet connection port 10 is D0, the diameter of the first connection port 11 is D1, the diameter of the second connection port 12 is D2, and the diameters of one opening 23 and the other opening 24 of the passage 25 are Dm. When, Dm <D0, Dm <D1, Dm <D2, D1 <D0, D2 <D0 are set, and one opening 23 of the communication passage 25 opens in the entrance connection port 10 at the first position A1 and the communication passage 25 The other opening 24 opens in the first connection port 11, the other opening 24 of the communication passage 25 opens in the entrance connection port 10 at the second position A2, and one opening 23 of the communication passage 25 opens in the second connection port 12. The bending angle θ of the center line of the communication passage 25 is set so as to open. In the embodiment, 110 ° ≤ θ ≤ 140 °, for example, θ = 120 °.

Further, the main body 1 comprises a main body 30 including a part of the exit side passage 5 including the outlet 3 and a whole or a part (in the embodiment) of the first passage 7 including the first connection port 11. It is configured to prepare. The main body 30 communicates with the connecting portion 6 and has a switching ball valve 20 that can be mounted in the connecting portion 6 from the outside with the center line X2 of the second connecting port 12 of the second passage 8 as the axis. 31 is provided and is provided to be detachably attached to the switching ball valve mounting port 31 to close the switching ball valve mounting port 31 at the time of mounting and to include the second connection port 12 and all or part of the second passage 8 (one in the embodiment). It is configured to include the closing body 32 that constitutes the part). The switching ball valve mounting port 31 crosses the second passage 8 and includes an inner port 31a and an outer port 31b. The obstruction body 32 also includes an inner body 32a that closes the inner opening 31a and an outer body 32b that closes the outer opening 31b. The inner body 32a and the outer body 32b are integrally formed, and the closing body 32 is attached by screwing the male screw provided on the outer body 32b into the female screw provided on the outer opening 31b. The inner body 32a and the outer body 32b may be formed separately and attached individually.

Further, a ring-shaped first seal ring 33 with which the surface of the switching ball valve 20 is in sliding contact is provided at the opening edge of the first connection port 11, and the second connection port 12 formed on the inner body 32a of the closing body 32. A ring-shaped second seal ring 34 that the surface of the switching ball valve 20 is in sliding contact with the opening edge of the switching ball valve 20 is provided. A ring-shaped seal ring with which the surface of the switching ball valve 20 is in sliding contact is not provided on the opening edge of the inlet connection port 10.

On the other hand, the first passage 7 and the second passage 8 are connected to the outlet side passage 5 via a hollow merging portion 36 provided on the outlet 3 side. The center lines M0, M1 and M2 of the exit merging port 40 of the exit side passage 5 opening to the merging portion 36, the first merging port 41 of the first passage 7 and the second merging port 42 of the second passage 8 are It is connected to the merging portion 36 so as to intersect in a T shape on a predetermined cross section (cross section shown in FIGS. 2 to 4). Specifically, the exit side passage 5, the first passage 7, and the second passage 8 are relative to the center line M0 of the exit merging port 40 of the exit side passage 5 and the center line M1 of the first merging port 41 of the first passage 7. The center line M2 of the second merging port 42 of the second passage 8 is orthogonal to each other, and the center line M0 of the exit merging port 40 of the exit side passage 5 and the center line M1 of the first merging port 41 of the first passage 7 are coaxial. It is formed continuously in. Further, the center line X0 and the center line M0 are positioned coaxially.

The merging portion 36 is provided with an accompanying ball valve 50. The accompanying ball valve 50 is rotatably provided with an orthogonal axis N passing through the intersection of the center lines M0, M1 and M2 and orthogonal to a predetermined cross section as an axis, and is rotated to a position at the first position A1 of the switching ball valve 20. The first position B1 (FIG. 2) that communicates the first passage 7 and the second passage 8 with the outlet side passage 5, and the second passage 8 and the outlet side passage 5 that communicate with each other at the second position A2 of the switching ball valve 20. The second position B2 (FIG. 3) that shuts off the first passage 7, and the third position B3 (FIG. 3) that connects the first passage 7 and the second passage 8 at the third position A3 of the switching ball valve 20 and shuts off the outlet side passage 5. It is located in Fig. 4). As shown in FIG. 1, a rotation shaft 51 having an orthogonal axis N as an axis for rotating the accompanying ball valve 50 is rotatably attached to the main body 1.

The accompanying ball valve 50 has a T-shaped continuous path 52 having three openings on the surface of the accompanying ball valve 50 and passing through the intersection of the center lines M0, M1, and M2. The continuous road 52 is configured to include a straight road having a first opening 53 and a second opening 54 and being on the same axis as each other, and a crossing road having a third opening 55 and orthogonal to the straight road. .. Then, at the first position B1, the outlet merging port 40 and the first opening 53 are communicated with each other, the first merging port 41 and the second opening 54 are communicated with each other, and the second merging port 42 and the third opening 55 are communicated with each other. To do. At the second position B2, the outlet merging port 40 and the third opening 55 are communicated with each other, and the first merging port 41 is shut off at the general surface of the accompanying ball valve 50 on the side opposite to the third opening 55. At the third position B3, the outlet merging port 40 is blocked at the general surface of the accompanying ball valve 50 on the side opposite to the third opening 55.

More specifically, the diameter of the outlet merging port 40 is E0, the diameter of the first merging port 41 is E1, the diameter of the second merging port 42 is E2, the first opening 53, the second opening 54 and the third opening of the continuous road 52. When the diameter of 55 is Em, Em <E0, Em <E1, Em <E2 are set, and at the first position B1, the first opening 53 of the continuous road 52 opens in the exit confluence 40, and the continuous road The second opening 54 of the 52 opens in the first confluence 41, the third opening 55 of the continuous road 52 opens in the second confluence 42, and the first opening 53 of the continuous road 52 at the second position B2. Is opened in the merging portion 36, the second opening 54 of the continuous road 52 is opened in the second merging port 42, and the third opening 55 of the continuous road 52 is opened in the exit merging port 40.

Further, in the main body 1, the outlet 3 side including the merging portion 36 and the exit side passage 5 becomes the center line M0 of the exit merging port 40 of the exit side passage 5 and the center line M1 of the first merging port 41 of the first passage 7. The main body 30 which is orthogonal and cut in a plane passing through the merging portion 36 and constitutes all or a part (in the embodiment) of the first passage 7 including the first merging port 41, and the exit side passage 5 It is divided into an outlet body 56 including. The outlet body 56 can be attached to and detached from the main body 30 by bolts 56a and nuts 56b, and with the outlet body 56 removed, the accompanying ball valve 50 can be attached to the merging portion 36 from the outside. There is.

Further, a ring-shaped inner seal ring 57 with which the surface of the accompanying ball valve 50 is in sliding contact is provided at the opening edge of the first merging port 41, and the surface of the accompanying ball valve 50 is provided at the opening edge of the outlet merging port 40. A ring-shaped outer seal ring 58 that is in sliding contact is provided. A ring-shaped seal ring with which the surface of the accompanying ball valve 50 is in sliding contact is not provided at the opening edge of the second merging port 42.

Furthermore, the control valve portion 60 is a rod in which a disk-shaped control valve 61 and one end thereof are slidably supported by the lower wall of the main body 30 of the main body 1 and the control valve 61 is supported in the middle of the one end portion side. 62 and the other end side of the rod 62 are loosely inserted from the control valve 61 of the rod 62 while being provided in the middle of the first passage 7 of the main body 30, and the fluid from the first connection port 11 side flows in from the middle and is first from one end opening. It includes a tubular body 63 that flows out to the merging port 41 side, and a bearing 64 that is provided at the other end opening of the tubular body 63 and supports the rod 62. One end opening of the tubular body 63 is configured as a valve seat 65 that the control valve 61 contacts and closes the first passage 7 at the time of contact. Further, the control valve portion 60 includes a diaphragm 66 that supports the other end of the rod 62. The diaphragm 66 is a fluid on the outlet 3 side between the diaphragm 66 and the partition wall of the main body 30 outside the other end of the tubular body 63. Form a pressure chamber 68 that enters through the communication passage 67. A cup-shaped lid 69 is provided on the upper side of the diaphragm 66 so as to be detachably attached to the main body 30 with a bolt and covers the diaphragm 66. Inside the lid 69, the diaphragm 66 is stored in a compressed state coaxially with the rod 62 and presses the diaphragm 66. The coil spring 70 is housed in it. Reference numeral 71 is an adjusting bolt provided on the lid 69 so as to be able to advance and retreat coaxially with the coil spring 70, and reference numeral 72 is an adjusting bolt for adjusting the compressive strength of the coil spring 70. Reference numeral 72 is a lock nut for positioning the adjusting bolt 71 at an appropriate position.

Therefore, according to the control valve device according to this embodiment, the fluid is controlled as follows.
<During decompression control>
As shown in FIG. 2, the switching ball valve 20 is set to the first position A1 and the accompanying ball valve 50 is set to the first position B1. In this case, the pair of openings 23 and 24 of the switching ball valve 20 are formed on the far side, while the general surface 26 closes the second connection port 12, while the general surface 26 is the conventional surface (FIG. 10). Since it is wider than the general surface on the opposite side of the T-shaped third opening c, the sealing property of the closed portion can be ensured. In this state, the control valve 61 is always open to allow the fluid to flow, the pressure on the outlet 3 side increases, and when the pressure in the pressure chamber 68 increases, the control valve 61 closes to stop the flow of the fluid and exit. Depressurize the 3rd side.

<Bypass control>
As shown in FIG. 3, the switching ball valve 20 is set to the second position A2, and the accompanying ball valve 50 is set to the second position B2. In this case, while the pair of openings of the switching ball valve 20 are formed on the far side, the general surface 26 closes the first connection port 11, while the general surface 26 is a conventional T-shape (FIG. 10). Since it is wider than the general surface on the side opposite to the third opening c, the sealing property of the closed portion can be ensured. Further, in the accompanying ball valve 50, the first merging port 41 is closed by the general surface on the opposite side of the third opening 55, so that the sealing property of the closed portion can be ensured. In this state, since the first passage 7 is closed and the second passage 8 becomes effective, the fluid on the inlet 2 side is discharged to the outlet 3 side through the second passage 8.

<During stop control>
As shown in FIG. 4, the switching ball valve 20 is set to the third position A3, and the accompanying ball valve 50 is set to the third position B3. In this case, the pair of openings 23, 24 of the switching ball valve 20 are made of a far side surface, while the general surface 26 closes the first connection port 11, and the pair of openings 23, 24 of the switching ball valve 20 are close to each other. The other general surface 27 consisting of the side surface closes the second connection port 12, while the general surface 26 is wider than the general surface on the opposite side of the conventional T-shaped third opening c (FIG. 10). On the other hand, the general surface 27 is also wider than the general surface between the conventional T-shaped third opening c and the first opening a and the general surface between the third opening c and the second opening b. , The sealing property of the closed part can be ensured. Further, in the accompanying ball valve 50, the outlet merging port 40 is closed by the general surface opposite to the third opening 55, so that the sealing property of the closed portion can be ensured. In this state, the first connection port 11 and the second connection port 12 are closed, and the outlet merging port 40 is closed, so that the fluid flow is stopped.

At each of these controls, the connections at the first position A1, the second position A2, and the third position A3 of the switching ball valve 20 correspond to the pair of openings 23 of the communication passage 25 and the other opening 24. Since it is only necessary to match the mouths 10, 11 and 12, it is simplified accordingly. Further, in the switching ball valve 20, one opening 23 and the other opening 24 of the communication passage 25 are opened in the connection ports 10, 11 and 12, so that the one opening 23 and the other opening 24 are the connection ports 10, 11 and 12. Since it is not blocked and narrowed by the surroundings, a flow path can be reliably secured and the flow of fluid can be smoothed. On the other hand, also in the accompanying ball valve 50, since the three openings 53, 54, 55 of the continuous path 52 are opened in the merging ports 40, 41, 42, the respective openings 53, 54, 55 are the merging ports 40, 41. , 42 is not blocked and narrowed, so that the flow path can be reliably secured and the fluid flow can be smoothed.

Further, in the connection portion 6, since the ring-shaped seal ring on which the surface of the switching ball valve 20 is in sliding contact is not provided on the opening edge of the inlet connection port 10, one seal ring is provided as compared with the conventional case (FIG. 10). Therefore, the number of parts can be reduced, and the processing of the portion where the seal ring is provided can be reduced, and the structure can be simplified accordingly. Further, since the first seal ring 33 and the second seal ring 34 are located on a straight line of the center lines X1 and X2, the support of the switching ball valve 20 is held by the seal ring facing 180 °. Therefore, the support can be stabilized accordingly.

On the other hand, also in the merging portion 36, since the ring-shaped seal ring on which the surface of the accompanying ball valve 50 is in sliding contact is not provided at the opening edge of the second merging port 42, the seal ring is provided as compared with the conventional case (FIG. 10). The number of parts is reduced by one, so that the number of parts can be reduced and the processing of the portion where the seal ring is provided can be reduced, and the structure can be simplified accordingly. Further, since the inner seal ring 57 and the outer seal ring 58 are located on a straight line of the center lines M0 and M1, the support of the accompanying ball valve 50 is held by the seal ring facing 180 °. The support can be stabilized accordingly.

Further, in the control valve device S according to the present embodiment, since the communication passage 25 of the switching ball valve 20 is formed in a V shape, as in the conventional case (FIG. 10), a T shape having three openings is formed. The processing can be facilitated as compared with the case of processing the one of the communication passage 111 of. Further, as described above, one general surface 26 is wider than the general surface on the opposite side of the conventional T-shaped third opening c, while the other general surface 27 is the same as the conventional T-shaped third opening c. Since it is wider than the general surface between the first opening a and the general surface between the third opening c and the second opening b, the sealing property of the closed portion can be ensured, and the parts and structure can be ensured accordingly. Can be simplified. This also means that the diameters of the connection ports 10, 11 and 12 can be made the same, and the switching ball valve 20 can be made smaller to reduce the size. That is, since the general surface of the switching ball valve 20 can be widened, even if the switching ball valve 20 is made small, the width of the general surface is not substantially narrowed, so that the size can be reduced. It is.

Further, in the main body 1, the main body 30 forms a part of the outlet side passage 5 including the outlet 3, and the surface of the switching ball valve 20 is slidably contacted with the opening edge of the inlet connection port 10. Since it is not provided, it is not necessary to provide the tubular inlet-side body 114 on which the inlet-side passage 4 is formed so as to be detachably attached via the screw means as in the conventional case (FIG. 10). Therefore, the main body 1 is processed. Can be reduced, and the case structure of the main body 1 can also be simplified. Further, in the main body 1, the main body 30 including the first merging port 41 and the outlet body 56 including the outlet side passage 5 are divided, and the accompanying ball valve 50 is inserted in the merging portion 36 with the outlet body 56 removed. Since it can be mounted from the outside, the structure of providing the accompanying ball valve mounting port 122 and closing with the closing body 123 becomes unnecessary, and moreover, the tubular outlet side in which the outlet side passage 106 is formed is not required. The structure for mounting the split body 124 via the screw means becomes unnecessary, so that the processing of the main body 1 can be reduced, and the case structure of the main body 1 can be greatly simplified in this respect as well.

Next, the fluid control valve device S according to another embodiment of the present invention will be described in detail.
As shown in FIGS. 6 to 9, the fluid control valve device S according to another embodiment of the present invention automatically discharges ascites of steam as a fluid by opening / closing control of the control valve 91 of the control valve unit 90. It is configured as a steam trap. Those similar to the above will be described with the same reference numerals.

The main body 1 is connected to the inlet side passage 4 on the inlet 2 side, the outlet side passage 5 on the outlet 3 side, and the inlet side passage 4 via a hollow connecting portion 6, and reaches the outlet side passage 5 as well as the control valve portion 90. A first passage 7 opened and closed by the control valve 91 and a second passage 8 connected to the inlet side passage 4 via a connecting portion 6 are provided.
The center lines X0, X1 and X2 of the entrance connection port 10 of the entrance side passage 4 opening to the connection portion 6, the first connection port 11 of the first passage 7 and the second connection port 12 of the second passage 8 are predetermined. It is connected to the connecting portion 6 so as to intersect in a T shape on a cross section (cross section shown in FIGS. 7 to 9). Specifically, the entrance side passage 4, the first passage 7, and the second passage 8 have the center line X1 of the first connection port 11 of the first passage 7 with respect to the center line X0 of the entrance connection port 10 of the entrance side passage 4. The center line X2 of the second connection port 12 of the second passage 8 is orthogonal to each other, and the center line X1 of the first connection port 11 of the first passage 7 and the center line X2 of the second connection port 12 of the second passage 8 are aligned. It is formed coaxially and continuously.

The connecting portion 6 is provided with a switching ball valve 20 similar to the above shown in FIG. The switching ball valve 20 is rotatably provided with an orthogonal axis Y passing through the intersection of the center lines X0, X1 and X2 and orthogonal to a predetermined cross section as an axis, and is rotated to include the inlet side passage 4 and the first passage 7. 1st position A1 (FIG. 7) that communicates with the second passage 8 and blocks the first passage 7, the second position A2 (FIG. 8) that connects the entrance side passage 4 and the second passage 8 and blocks the first passage 7. It is located at a third position A3 (FIG. 9) that blocks both the passage 4, the first passage 7, and the second passage 8. As shown in FIG. 6, a rotation shaft 21 having an orthogonal axis Y as an axis for rotating the switching ball valve 20 is rotatably attached to the main body 1, and as shown in FIG. The switching ball valve 20 is provided with an engaging recess 22 which is engaged and connected to the inner end of the rotating shaft 21.

The switching ball valve 20 has a pair of openings of one opening 23 and the other opening 24 on the surface of the switching ball valve 20, passes through the intersection of the center lines X0, X1, and X2, and at the first position A1, the inlet connection port 10 And the first connection port 11 are communicated with each other, and a communication passage 25 is formed at the second position A2 to communicate the entrance connection port 10 and the second connection port 12. The communication passage 25 is V so as to block the first connection port 11 and the second connection port 12 by the general surface of the switching ball valve 20 in which the pair of openings 23 and 24 of the communication passage 25 are not formed at the third position A3. It is bent in a character shape. The general surface is composed of a general surface 26 having a pair of openings 23 and 24 on the far side, and a general surface 27 having a pair of openings 23 and 24 on the near side. In the embodiment, as shown in FIG. 9, the first connection port 11 is closed by one general surface 26, and the second connection port 12 is closed by the other general surface 27. However, on the contrary, the first connection port 11 may be closed by the other general surface 27, and the second connection port 12 may be closed by the one general surface 26.

More specifically, the diameter of the inlet connection port 10 is D0, the diameter of the first connection port 11 is D1, the diameter of the second connection port 12 is D2, and the diameters of one opening 23 and the other opening 24 of the passage 25 are Dm. Then, Dm <D0, Dm <D1, Dm <D2, D1 <D0, D2 <D0 are set, and one opening 23 of the communication passage 25 opens in the entrance connection port 10 at the first position A1 and the communication passage 25 The other opening 24 opens in the first connection port 11, the other opening 24 of the communication passage 25 opens in the entrance connection port 10 at the second position A2, and one opening 23 of the communication passage 25 opens in the second connection port 12. The bending angle θ (FIG. 5) of the center line of the communication passage 25 is determined so as to open to. In the embodiment, 110 ° ≤ θ ≤ 140 °, for example, θ = 120 °.

Further, the main body 1 comprises a main body 30 including the entire exit side passage 5 including the outlet 3 and forming all or a part (part in the embodiment) of the first passage 7 including the first connection port 11. It is configured to prepare. The main body 30 communicates with the connecting portion 6 and has a switching ball valve 20 that can be mounted in the connecting portion 6 from the outside with the center line X2 of the second connecting port 12 of the second passage 8 as the axis. 31 is provided and is provided to be detachably attached to the switching ball valve mounting port 31 to close the switching ball valve mounting port 31 at the time of mounting and to include the second connection port 12 and all or part of the second passage 8 (one in the embodiment). It is configured to include the closing body 32 that constitutes the part). The switching ball valve mounting port 31 crosses the second passage 8 and includes an inner port 31a and an outer port 31b. The obstruction body 32 also includes an inner body 32a that closes the inner opening 31a and an outer body 32b that closes the outer opening 31b. The inner body 32a and the outer body 32b are formed as separate bodies, and the inner body 32a is attached by screwing the male screw provided on the inner body 32a to the female screw provided on the inner opening 31a, and the outer body 32a is attached. The 32b is attached by screwing the male screw provided on the outer body 32b into the female screw provided on the outer opening 31b. The inner body 32a and the outer body 32b may be integrally formed and attached.

Further, a ring-shaped first seal ring 33 with which the surface of the switching ball valve 20 is in sliding contact is provided at the opening edge of the first connection port 11, and the second connection port 12 formed on the inner body 32a of the closing body 32. A ring-shaped second seal ring 34 that the surface of the switching ball valve 20 is in sliding contact with the opening edge of the switching ball valve 20 is provided. A ring-shaped seal ring with which the surface of the switching ball valve 20 is in sliding contact is not provided on the opening edge of the inlet connection port 10.

Furthermore, the main body 1 covers the main body 30, the slave body 80 attached to the upper part of the main body 30, a cup-shaped cover 81 that covers the slave body 80, and the slave body 80 and the cover body 81. It is configured to include a lid 82 fixed to the body with bolts. The slave body 80 is formed in a truncated cone shape, and an intermediate path 83 forming a part of the first passage 7 is formed at the center with the central axis X1 as the axis. Further, a space portion 84 covered with the covering body 81 is formed on the upper surface side of the slave body 80. Further, around the intermediate road 83 of the slave body 80, a peripheral road 85 communicating with the exit side passage 5 is formed.

The control valve unit 90 is a well-known bimetal drive type, and has the above-mentioned slave body 80 and cover body 81 as components, and also has a disk-shaped control valve 91 and a drive body that drives the control valve 91. It is configured to include 92. The control valve 91 is housed in the space portion 84, normally closes the intermediate path 83 and the peripheral path 85, and is driven by the driving body 92 to open the intermediate path 83 and the peripheral path 85 to allow the fluid in the first passage 7 to flow. It flows into the exit side passage 5. The drive body 92 is formed of a C-ring-shaped bimetal that is crowned on the inclined outer peripheral surface of the slave body 80, and when the temperature is high, the diameter is expanded and descends along the outer peripheral surface of the slave body 80, and the temperature drops. Then, the diameter is reduced and the temperature is reduced along the outer peripheral surface of the slave body 80 to push up the control valve 91. By pushing up the control valve 91 of the drive body 92, the intermediate passage 83 and the peripheral passage 85 are opened, and the fluid in the first passage 7 can flow into the outlet side passage 5.

Therefore, according to the control valve device S according to this embodiment, the fluid is controlled as follows.
<During trap control>
As shown in FIG. 7, the switching ball valve 20 is set to the first position A1. In this case, the pair of openings 23 and 24 of the switching ball valve 20 are formed on the far side, while the general surface 26 closes the second connection port 12, while the general surface 26 is the conventional surface (FIG. 10). Since it is wider than the general surface on the opposite side of the T-shaped third opening c, the sealing property of the closed portion can be ensured. In this state, the control valve 91 is always closed to stop the flow of the fluid, and when the temperature of the fluid is low and the control valve 91 is opened, the fluid flows into the outlet side passage 5 through the first passage 7. Ascites of steam as a fluid is discharged.

<Bypass control>
As shown in FIG. 8, the switching ball valve 20 is set to the second position A2. In this case, the pair of openings 23 and 24 of the switching ball valve 20 are formed on the far side, while the general surface 26 closes the first connection port 11, while the general surface 26 is the conventional surface (FIG. 10). Since it is wider than the general surface on the opposite side of the T-shaped third opening c, the sealing property of the closed portion can be ensured. In this state, since the first passage 7 is closed and the second passage 8 becomes effective, the fluid on the inlet 2 side is discharged to the outlet 3 side through the second passage 8.

<During stop control>
As shown in FIG. 9, the switching ball valve 20 is set to the third position A3. In this case, the pair of openings of the switching ball valve 20 are formed on the far side, while the general surface 26 closes the first connection port 11, and the pair of openings 23, 24 of the switching ball valve 20 are close to each other. The other general surface 27 is closed by the second connection port 12, while the general surface 26 is wider than the general surface on the opposite side of the conventional T-shaped third opening c (FIG. 10). On the other hand, the general surface 27 is also wider than the general surface between the conventional T-shaped third opening c and the first opening a and the general surface between the third opening c and the second opening b. It is possible to ensure the sealing property of. In this state, the first connection port 11 and the second connection port 12 are closed, so that the fluid flow is stopped.

At each of these controls, the connection at the first position A1, the second position A2, and the third position A3 of the switching ball valve 20 connects the one opening 23 of the communication passage 25 and the pair of openings 23, 24 of the other opening 24. Since it is only necessary to match the corresponding connection ports 10, 11 and 12, it is simplified accordingly. Further, in the switching ball valve 20, one opening 23 and the other opening 24 of the communication passage 25 are opened in the connection ports 10, 11 and 12, so that the one opening 23 and the other opening 24 are the connection ports 10, 11 and 12. Since it is not blocked and narrowed by the surroundings, a flow path can be reliably secured and the flow of fluid can be smoothed.

Further, in the connection portion 6, since the ring-shaped seal ring on which the surface of the switching ball valve 20 is in sliding contact is not provided on the opening edge of the inlet connection port 10, one seal ring is provided as compared with the conventional case (FIG. 10). Therefore, the number of parts can be reduced, and the processing of the portion where the seal ring is provided can be reduced, and the structure can be simplified accordingly. Further, since the first seal ring 33 and the second seal ring 34 are located on a straight line of the center lines X1 and X2, the support of the switching ball valve 20 is held by the seal ring facing 180 °. Therefore, the support can be stabilized accordingly.

Further, in the control valve device S according to the present embodiment, since the communication passage 25 of the switching ball valve 20 is formed in a V shape, as in the conventional case (FIG. 10), a T shape having three openings is formed. The processing can be facilitated as compared with the case of processing the one of the communication passage 111 of. Further, as described above, one general surface 26 is wider than the general surface on the opposite side of the conventional T-shaped third opening c, while the other general surface 27 is the same as the conventional T-shaped third opening c. Since it is wider than the general surface between the first opening a and the general surface between the third opening c and the second opening b, the sealing property of the closed portion can be ensured, and the parts and structure can be ensured accordingly. Can be simplified. This also means that the diameters of the connection ports 10, 11 and 12 can be made the same, and the switching ball valve 20 can be made smaller to reduce the size. That is, since the general surface of the switching ball valve 20 can be widened, even if the switching ball valve 20 is made small, the width of the general surface is not substantially narrowed, so that the size can be reduced. It is.

Further, in the main body 1, the main body 30 constitutes a part of the outlet side passage 5 including the outlet 3, and the surface of the switching ball valve 20 is slidably contacted with the opening edge of the inlet connection port 10. Since the ring is not provided, it is not necessary to provide the tubular inlet-side body 114 on which the inlet-side passage 105 is formed so as to be detachably attached via the screw means as in the conventional case (FIG. 10). The processing can be reduced, and the case structure of the main body 1 can be simplified.

In the above embodiment, the pressure reducing valve that reduces the pressure of the present invention by controlling the opening and closing of the control valve 61 of the control valve unit 60, or the ascites of steam as a fluid is automatically controlled by opening and closing the control valve 91 of the control valve unit 90. Although an example applied to a steam trap that discharges water is shown, the present invention can also be applied to other fluid control valve devices. Of course, it can be applied not only to water and steam but also to various fluids such as oil. It is easy for one of ordinary skill in the art to make many changes to these exemplary embodiments without substantially departing from the novel teachings and effects of the present invention, many of which are within the scope of the present invention. included.

S Fluid control valve device 1 Main body 2 Inlet 3 Outlet 4 Inlet side passage 5 Outlet side passage 6 Connection part 7 1st passage 8 2nd passage 10 Inlet connection port 11 1st connection port 12 2nd connection port X0, X1, X2 center Line Y Orthogonal axis 20 Switching ball valve A1 1st position A2 2nd position A3 3rd position 21 Rotating shaft 23 One opening 24 The other opening 25 Continuous passage 26 One general surface 27 The other general surface 30 Main body 31 Switching ball valve mounting port 32 Blocked body 33 1st seal ring 34 2nd seal ring 36 Confluence 40 Exit confluence 41 1st confluence 42 2nd confluence M0, M1, M2 Center line N Orthogonal axis B1 1st position B2 2nd position B3 3rd Position 50 Accompanying ball valve 51 Rotating shaft 52 Continuous path 53 First opening 54 Second opening 55 Third opening 56 Outlet body 57 Inner seal ring 58 Outer seal ring 60 Control valve part 61 Control valve 80 Subordinate 81 Cover 82 Lid Body 83 Intermediate path 84 Space section 85 Peripheral path 90 Control valve section 91 Control valve 92 Drive

Claims (10)

In a fluid control valve device provided with a main body having fluid inlets and outlets and a control valve unit that controls the fluid from the inlet to the outlet of the main body by opening and closing a control valve.
It is connected to the main body via a hollow connection portion to the inlet side passage on the inlet side, the outlet side passage on the outlet side, and the inlet side passage to reach the outlet side passage and is opened and closed by the control valve of the control valve portion. The first passage to be constructed and the second passage connected to the entrance side passage via the connection portion are provided.
The center lines X0, X1, and X2 of the entrance connection port of the entrance side passage, the first connection port of the first passage, and the second connection port of the second passage that open to the connection portion are T on a predetermined cross section. It is connected to the connecting portion so as to intersect in a character shape, and the connecting portion is rotatably provided with an orthogonal axis Y passing through the intersection of the center lines X0, X1 and X2 and orthogonal to the predetermined cross section as an axis. The first position that is moved to connect the entrance side passage and the first passage and block the second passage, the second position that connects the entrance side passage and the second passage and blocks the first passage, and the entrance. It is equipped with a switching ball valve located at a third position that blocks both the side passage and both the first passage and the second passage.
The center line X1 of the first connection port of the first passage and the center line X2 of the second connection port of the second passage are orthogonal to the center line X0 of the entrance connection port of the entrance side passage, and the first The center line X1 of the first connection port of the passage and the center line X2 of the second connection port of the second passage are coaxially continuous to form the entrance side passage, the first passage and the second passage.
The switching ball valve has a pair of openings of one opening and the other opening on the surface of the switching ball valve, passes through the intersection of the center lines X0, X1, and X2, and at the first position, the inlet connection port and the first. A communication passage that communicates with the connection port and communicates between the entrance connection port and the second connection port is formed at the second position, and a pair of openings of the communication passage is not formed at the third position. A control valve device characterized in that a V-shaped bend is formed so as to close the first connection port and the second connection port by the general surface of the switching ball valve. A ring-shaped first seal ring with the surface of the switching ball valve in sliding contact with the opening edge of the first connection port is provided, and a ring-shaped first seal ring with the surface of the switching ball valve in sliding contact with the opening edge of the second connection port is provided. 2. The control valve device according to claim 1, wherein a seal ring is provided, and a ring-shaped seal ring with which the surface of the switching ball valve is in sliding contact is not provided at the opening edge of the inlet connection port. The main body includes a main body including a part of an exit side passage including the outlet and a main body including the first connection port and forming all or a part of the first passage, and the main body communicates with the connection portion. At the same time, a switching ball valve mounting port is provided in the connection portion so that the switching ball valve can be mounted from the outside with the center line X2 of the second connection port of the second passage as the axis, and the switching ball valve is mounted and removed from the switching ball valve mounting port. The control valve according to claim 2, wherein the control valve is provided so as to be possible and to close the switching ball valve mounting port at the time of mounting and to include a closing body including the second connection port and forming all or a part of the second passage. apparatus. When the diameter of the entrance connection port is D0, the diameter of the first connection port is D1, the diameter of the second connection port is D2, and the diameters of one opening and the other opening of the communication passage are Dm, Dm <D0, Dm <D1, Dm <D2, D1 <D0, D2 <D0 are set, one opening of the communication passage opens in the entrance connection port at the first position, and the other opening of the communication passage opens in the first connection port. The center line of the communication passage is bent so that the other opening of the communication passage opens in the entrance connection port and one opening of the communication passage opens in the second connection port at the second position. The control valve device according to any one of claims 1 to 3, wherein the angle θ is determined. The control valve device according to any one of claims 1 to 4, wherein the second passage is configured as a bypass passage leading to the outlet side passage. The control valve device according to claim 5, further comprising a steam trap that automatically discharges ascites of steam as a fluid by controlling the opening and closing of the control valve of the control valve unit. The control valve device according to claim 5, further comprising a pressure reducing valve for reducing the pressure of the fluid on the outlet side by controlling the opening and closing of the control valve of the control valve unit. The first passage and the second passage are connected to the outlet side passage through a hollow merging portion, and the outlet merging port of the outlet side passage that opens to the merging portion, the first merging port of the first passage, and the first merging port of the first passage. The second merging port of the second passage is connected to the merging portion so that these center lines M0, M1 and M2 intersect in a T shape on a predetermined cross section, and the center lines M0 and M1 are connected to the merging portion. , M2 is rotatably provided and rotated around an orthogonal axis N that passes through the intersection of M2 and is orthogonal to the predetermined cross section, and is rotated at the first position of the switching ball valve to the first passage, the second passage, and the outlet side. It is positioned at the 1st position that communicates with the passage, and at the 2nd position of the switching ball valve that communicates with the 2nd passage and the outlet side passage and blocks the 1st passage, in accordance with the switching ball valve. Equipped with an accompanying ball valve that can be rotated
The center line M0 of the exit merging port of the exit side passage and the center line M1 of the first merging port of the first passage are orthogonal to the center line M2 of the second merging port of the second passage, and the exit. The center line M0 of the exit merging port of the side passage and the center line M1 of the first merging port of the first passage are coaxially connected to form the exit side passage, the first passage and the second passage.
The accompanying ball valve has three openings on the surface of the accompanying ball valve to form a T-shaped continuous path passing through the intersection of the center lines M0, M1 and M2, and the continuous path is formed through the first opening and the first opening. It is configured to include a straight road having a second opening and being on the same axis as each other and an intersection having a third opening and orthogonal to the straight road.
At the first position, the outlet merging port and the first opening are communicated, the first merging port and the second opening are communicated, the second merging port and the third opening are communicated, and the second opening is communicated. The claim is characterized in that the outlet merging port and the third opening are communicated at a position, and the first merging port is blocked by the general surface of the accompanying ball valve on the opposite side of the third opening. Item 7. The control valve device according to Item 7. The outlet side including the merging portion and the exit side passage of the main body is orthogonal to the center line M0 of the exit merging port of the exit side passage and the center line M1 of the first merging port of the first passage and passes through the merging portion. It is cut on a flat surface and divided into a main body including the first merging port and forming all or a part of the first passage and an outlet body including the outlet side passage, and the outlet body is attached to the main body. It can be removed, and with the outlet body removed, the accompanying ball valve can be mounted from the outside inside the merging portion.
A ring-shaped inner seal ring is provided on the opening edge of the first merging port so that the surface of the accompanying ball valve is in sliding contact with the opening edge, and a ring-shaped outer sealing ring is provided on the opening edge of the outlet merging port so that the surface of the accompanying ball valve is in sliding contact. The control valve device according to claim 8, wherein a ring-shaped seal ring with which the surface of the accompanying ball valve is in sliding contact is not provided at the opening edge of the second merging port. The diameter of the outlet merging port is E0, the diameter of the first merging port is E1, the diameter of the second merging port is E2, and the diameters of the first opening, the second opening, and the third opening of the continuous path are Em. When, Em <E0, Em <E1, Em <E2 are set, and at the first position, the first opening of the continuous road opens in the outlet confluence, and the second opening of the continuous road is the first. It opens in the confluence, the third opening of the continuous road opens in the second confluence, and at the second position, the first opening of the continuous road opens in the confluence, and the second opening of the continuous road. 9. The control valve device according to claim 9, wherein the control valve device is opened in the second merging port, and the third opening of the continuous path is opened in the outlet merging port.

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