JP2014077485A - Valve device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a valve device capable of surely cutting off a main passage even when it is disposed on a pipe of which an object to be circulated, is a solid matter such as powder.SOLUTION: A valve device includes a housing having a valve element accommodating chamber and a main passage, a valve element disposed rotatably in the valve element accommodating chamber, an annular seal member disposed movably in the extending direction of a central line of the main passage, having a seat surface closely kept into contact with the valve element, and having a controlled portion directing to a valve element accommodating chamber side, an elastic member for energizing the seat member to the valve element accommodating chamber side, a stopper member having a cylindrical interposing portion disposed between the seat member and the housing, and a control portion opposed to the controlled portion while directing to a side opposite to the valve element accommodating chamber side, and fixed to the housing, and the seal member for sealing between the seat member and the interposing portion of the stopper member at the valve element accommodating chamber side with respect to the control portion.

Description

  The present invention relates to a valve device disposed on a flow path for flowing a flow target such as liquid, gas, powder or the like.

  2. Description of the Related Art Conventionally, there are various types of valve devices for opening / closing and switching a flow path through which a circulation object is circulated, and one of them is a rotary valve.

  As shown in FIGS. 5 to 8, the valve device (rotary valve) includes a housing in which a valve body housing chamber VR is formed and at least two main passages R1 and R2 continuous with the valve body housing chamber VR are formed. 100 and a valve body 101 which is provided to be rotatable around a predetermined axis L in the valve body storage chamber VR, and is a sealing portion 101a (which can be opposed to the entire opening of the main passages R1 and R2 in the housing 100). 6 and FIG. 8), and an annular seat member 102 disposed in the periphery of the opening of at least one of the main passages R1 and R2 in the housing 100, the main passage R1, The seat member 102 is provided so as to be movable in the direction in which the center line of R2 extends, the elastic member 103 urges the seat member 102 toward the valve body storage chamber VR, and is fixed in the valve body storage chamber VR. A stopper member 104, and a stopper member 104 having a tip capable of interfering regulating portion 104a of the sheet member 102 in the valve chamber VR side.

  In such a valve device, excessive movement of the seat member 102 is restricted due to interference of the seat member 102 with the stopper member 104 (regulating portion 104a). Separation is prevented.

  5 and 7, the valve device having the above-described configuration has one main passage R1, R2 in a state where the sealing portion 101a of the valve body 101 is not opposed to the main passage R1, R2 of the housing 100. To the other main passages R1 and R2 can be distributed.

  On the other hand, as shown in FIGS. 6 and 8, in the state where the sealing portion 101a of the valve body 101 faces the main passages R1 and R2, the valve body 101 faces the periphery of the main passages R1 and R2. The main passages R1 and R2 are shut off.

  That is, in this type of valve device, the seat member 102 can move in the direction in which the center line of the main passage R1 extends by being separated from the stopper member 104 by the pressure contact of the valve body 101. Thereby, as a result of the sheet member 102 trying to move to the valve body 101 side by the urging of the elastic member 103, the sealing portion 101a of the valve body 101 (the annular region facing the periphery of the main passages R1 and R2). And work closely with the appropriate pressure. Thereby, this type of valve device reliably shuts off the main passages R1 and R2 in a state where the sealing portion 101a of the valve body 101 faces the main passages R1 and R2 (see, for example, Patent Documents 1, 2, and 3). ).

JP 2011-144861 A JP2011-179625A Japanese Patent No. 4192193

  By the way, this type of valve device may be provided on a pipe that circulates not only liquid and gas but also solid such as powder. In this case, in this type of valve device, an object to be circulated enters between the restricting portion 104a of the stopper member 104 and the front end of the sheet member 102, and the close contact between the valve body 101 (sealing portion 101a) and the sheet member 102. May not be secured.

  This will be specifically described. In this type of valve device, the valve body accommodating chamber VR (between the housing 100 and the valve body 101) is connected to the main passages R1, R2 by changing the posture or the position of the valve body 101 when the main passages R1, R2 are opened and closed. The communicating object such as powder flowing through the main passages R1 and R2 enters the valve body housing chamber VR. Therefore, a flow object such as powder entering the valve body storage chamber VR may enter between the regulating portion 104a of the stopper member 104 and the leading end portion of the sheet member 102. As a result, the movement of the seat member 102 toward the valve body 101 is hindered, and the urging force of the elastic member 103 does not act properly as the pressing force (pressing force) of the sheet member 102 against the valve body 101.

  In other words, since the elastic member 103 exerts an urging force corresponding to the deflection amount, in order to apply an appropriate urging force, the elastic member 103 needs to bend with a predetermined amount of bending that can exhibit the predetermined urging force. However, as described above, when the movement of the sheet member 102 is inhibited (the sheet member 102 remains at a position away from the stopper member 104), the elastic member 103 is bent in accordance with the arrangement of the sheet member 102. However, the deflection is due to the presence of the fluid object and the seat member 102 being at a position away from the stopper member 104, and the amount of movement of the seat member 102 due to the valve body 101 being in pressure contact with the seat member 102. The amount of bending of the elastic member 103 is reduced. As a result, the pressure contact force of the seat member 102 with respect to the valve body 101 is reduced. As a result, when the main passages R1 and R2 are blocked, the gap between the valve body 101 and the seat member 102 is not sealed, and the main passages R1 and R2 May not be reliably blocked.

  In particular, as shown in FIGS. 7 and 8, in a valve device in which the valve body 101 is separated from the seat member 102 as the main passages R <b> 1 and R <b> 2 are opened and closed, the flow object is the valve body 101 and the seat member 102. It is prominent that the main passages R1 and R2 cannot be reliably shut off because they easily pass into the valve body accommodating chamber VR.

  Accordingly, an object of the present invention is to provide a valve device that can reliably block a main passage even when disposed on a pipe having a solid such as powder as a circulation target.

  The valve device according to the present invention includes a housing in which a valve body housing chamber is formed, at least two main passages continuous with the valve body housing chamber, and a rotatable around a predetermined axis in the valve body housing chamber. A valve body that is provided and has a sealing portion that can be opposed to the entire opening of the main passage in the housing, and is arranged around the main passage on the valve body housing chamber side and extends the center line of the main passage An annular seat member provided movably in a direction, having a seat surface in close contact with the valve body and having a regulated portion facing the valve body housing chamber side, and the seat member on the valve body housing chamber side An elastic member that is urged against the cylindrical member, a cylindrical interposing part that is externally fitted to the seat member and interposed between the seat member and the housing, and a regulated part facing the side opposite to the valve body housing chamber side It is a stopper member having an opposing regulating portion. Te, and wherein the stopper member fixed to the housing, further comprising a seal member for sealing between the interposed portion of the sheet member and the stopper member in the valve body accommodating chamber side than the regulating unit.

  According to the valve device having the above configuration, the flow target object can flow from one main passage toward the other main passage in a state where the sealing portion of the valve body does not face the main passage of the housing. On the other hand, in a state where the sealing portion of the valve body faces the main passage, the sheet member is in close contact with the sealing portion of the valve body and blocks the main passage.

  Specifically, in the valve device configured as described above, the seat member is moved away from the stopper member by the pressure contact of the valve body, so that the seat member can move in the direction in which the center line of the main passage extends. As a result, as a result of the sheet member attempting to move toward the valve body by the biasing of the elastic member, an appropriate pressure contact force is applied to the sealing portion of the valve body (annular region facing the periphery of the main passage). Closely. As a result, the main passage is reliably blocked with the sealing portion of the valve body facing the main passage.

  In the valve device configured as described above, the seat member is provided so as to be movable in the direction in which the center line of the main passage extends, and is urged toward the valve element (valve element accommodating chamber) by the elastic member. The member tries to move toward the valve body storage chamber, but if the sheet member tries to move excessively toward the valve body storage chamber, the restricted portion of the sheet member comes into contact (interference) with the restriction portion of the stopper member. To do. Thereby, the excessive movement of the sheet member is limited, and for example, separation of the sheet member from the peripheral portion of the opening of the main passage is prevented. In the valve device configured as described above, as in the conventional valve device, the valve body accommodation chamber is in communication with the main passage by changing the posture or position of the valve body as the main passage opens and closes.

  However, in the valve device configured as described above, the seal member seals between the seat member and the interposed portion of the stopper member closer to the valve body housing chamber than the restricting portion. Does not pass through between the sheet member and the interposed portion of the stopper member to reach the region where the restricting portion and the restricted portion exist. Therefore, the flow object does not enter between the restricting portion and the restricted portion, and the sheet member can move in the direction in which the center line of the main passage extends over a long period of time. As a result, as a result of the sheet member attempting to move toward the valve body by the biasing of the elastic member, an appropriate pressure contact force is applied to the sealing portion of the valve body (annular region facing the periphery of the main passage). Closely. Therefore, the valve device having the above-described configuration can reliably block the main passage even if it is disposed on a pipe whose flow target is a solid such as powder.

  As one aspect of the present invention, the valve body may be provided so as to be tiltable with one end side in a direction in which a predetermined axis extends in a state where the sealing portion faces the main passage. If it does in this way, it can switch to the state which the sealing part of the valve body closely_contact | adhered to the sheet member, and the state which the sealing part of the valve body spaced apart from the sheet member by tilting of the valve body. Along with this, the valve body can be rotated around a predetermined axis while being separated from the seat member. Therefore, when the main passage is opened and closed (the valve body is rotated), the valve body does not come into sliding contact with the seat member, and wear of the seat member is suppressed. Thereby, as a result of ensuring the close contact between the valve body and the seat member, the main passage can be properly blocked over a long period of time.

  As another aspect of the present invention, the restricting portion of the stopper member is formed so as to protrude inward from the inner periphery of the interposed portion, and is configured to be capable of guiding the outer periphery of the seat member in the direction in which the center line of the main passage extends. It may be. In this way, when the sheet member moves in the direction in which the center line of the main passage extends, the sheet member moves on a prescribed trajectory. In other words, the seat member is guided by the tip of the restricting portion, whereby the seat member can be smoothly moved, and the seat member is brought into close contact with the valve body in an appropriate state.

  In this case, the interposition part has a first end and a second end in the direction in which the center line of the main passage extends, and the stopper member extends radially outward from the outer periphery of the first end of the interposition part. The annular fixing portion may further include a fixing portion that is fixed in a state along the inner surface of the housing in the valve body housing chamber, and the restricting portion may be provided continuously with the second end of the interposition portion. If it does in this way, a stopper member will be fixed with a proper posture to a housing. Therefore, the regulated portion of the sheet member stably interferes (contacts) with the regulating portion of the stopper member, and the movement of the sheet member can be more appropriately regulated.

  Further, in this case, an annular insertion portion having a first end and a second end in a direction in which the center line of the main passage extends, and an insertion portion inserted between the seat member and the interposition portion, An annular positioning portion connected to the first end of the insertion portion, the fixing member having a positioning portion fixed to the housing in a state of being disposed on the fixing portion of the stopper member, and the sealing member A gland packing disposed between the sheet member and the interposition part, and is pressed toward the regulating part by the second end of the insertion part inserted between the sheet member and the interposition part. It can be in close contact with the upper part. In this way, not only the stopper member is properly fixed to the housing, but also the sealing performance between the seat member and the interposition part is enhanced. That is, the gland packing is in close contact with the interposition part and the seat member in a wide range in the direction in which the center line of the main passage extends. Therefore, it is possible to more reliably prevent a flow target such as powder from passing between the sheet member and the stopper member, and to ensure the movement of the sheet member.

  The seat member is a seat body having a first end and a second end in a direction in which a center line of the main passage extends, a cylindrical seat body disposed concentrically or substantially concentrically with the main passage, and a seat body An annular head portion concentrically or substantially concentrically connected to the first end, the head portion having a seat surface protruding to the valve body housing chamber side, and the outer diameter of the seat body is outside the head portion The regulated portion is provided on the outer periphery of the head portion, the interposed portion of the stopper member is fitted on the head portion of the sheet member, and the elastic member includes the head portion and the housing. It can be arranged between. If it does in this way, the sheet member and the elastic member can be arranged in an overlapping manner in the direction in which the center line of the main passage extends. That is, the seat member and the elastic member are urged toward the valve body housing chamber by the elastic member without being aligned in a line in the direction in which the center line of the main passage extends. Thereby, even if the configuration in which the seat member is urged by the elastic member is adopted, the size of the entire valve device is prevented from being increased.

  As described above, the valve device according to the present invention can exhibit an excellent effect that the main passage can be reliably blocked even when disposed on a pipe having a solid such as powder as a circulation target. .

FIG. 1 is a longitudinal sectional view of a valve device according to an embodiment of the present invention, and is a longitudinal sectional view showing a state in which a first main passage and a second main passage are communicated with each other via a communication passage. FIG. 2 is a longitudinal sectional view of the valve device according to the embodiment, and is a longitudinal sectional view of a state in which the sealing portion of the valve body is opposed to the first main passage. FIG. 3 is an enlarged view of a portion A in FIG. FIG. 4 is an enlarged view of a portion B in FIG. FIG. 5 is a longitudinal sectional view of a conventional valve device, and is a longitudinal sectional view in a state where a main passage is blocked. FIG. 6 is a longitudinal sectional view of the conventional valve device shown in FIG. 5, and is a longitudinal sectional view showing a state in which the main passage is communicated with the communicating passage. FIG. 7 is a longitudinal sectional view of another conventional valve device, in which the main passage is blocked. FIG. 8 is a vertical cross-sectional view of the conventional valve device shown in FIG. 7, and is a vertical cross-sectional view in a state where the main passage is communicated via the communication passage.

  Hereinafter, a valve device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1 and 2, the valve device 1 includes a valve body storage chamber VR and two main passages R1 and R2 (hereinafter, one main passage is defined as a first passage) continuous with the valve body storage chamber VR. The housing 2 in which the main passage R1 is called and the other main passage is called the second main passage R2) and a predetermined axis line (hereinafter referred to as a reference axis line) L are provided in the valve body housing chamber VR. A valve body 3 having a sealing portion 30 (see FIG. 2) that can be opposed to the entire opening of the first main passage R1 in the housing 2, and a first on the valve body housing chamber VR side. An annular seat member 4 disposed around the main passage R1 and movably provided in a direction in which a center line (hereinafter referred to as a reference center line) CL of the first main passage R1 extends, and is in close contact with the valve body 3 Regulated with the seat surface 40 and facing toward the valve body storage chamber VR A seat member 4 having 41, an elastic member 5 that urges the seat member 4 toward the valve body accommodating chamber VR, and a cylinder that is externally fitted to the seat member 4 and interposed between the seat member 4 and the housing 2 A stopper member 6 having a shaped interposing part 60 and having a regulating part 61 facing the regulated part 41 facing the side opposite to the valve body accommodating chamber VR side, and fixed to the housing 2 6, and a seal member 7 that seals between the seat member 4 and the interposition part 60 of the stopper member 6 on the valve body accommodation chamber VR side with respect to the regulation part 61. Furthermore, the valve device 1 according to the present embodiment includes a fixing member 8 that fixes the stopper member 6 to the housing 2. Moreover, the valve device 1 according to the present embodiment includes a first stem 9A and a second stem 9B for performing an opening / closing operation of the flow path.

  The housing 2 includes a main frame 20 and a subframe 21 connected to the main frame 20.

  The main frame 20 is a main body 200 having a first end and a second end in a direction (hereinafter referred to as a second direction) orthogonal to a direction in which the reference axis L extends (hereinafter referred to as a first direction). A first cylindrical shape having a main body portion 200 having an internal space capable of accommodating the body 3, a main flange portion 201 connected to the first end of the main body portion 200, and a first end and a second end in the second direction. A first pipe part 202 having a first end part connected to the second end of the main body part 200, and a first pipe flange 203 for connecting a pipe (not shown). A first piping flange 203 connected to the second end of the tubular portion 202.

  The internal space of the main body portion 200 and the internal space of the first cylindrical portion 202 are communicated in the second direction. The internal space of the main body portion 200 is opened at the first end of the main body portion 200, and the main flange portion 201 is provided concentrically with the internal space of the main body portion 200. The main body part 200 includes a first stem insertion part 204 for inserting the first stem 9A and a second stem insertion part 205 for inserting the second stem 9B.

  The first stem insertion portion 204 is provided at one end portion of the main body portion 200 in the first direction, and the second stem insertion portion 205 is provided at the other end portion of the main body portion 200 in the first direction. Each of the first stem insertion portion 204 and the second stem insertion portion 205 is provided with a gland packing GP1 for liquid-tight or air-tightness between the inserted stems 9A and 9B. Push members 206A and 206B for fixing the gland packing GP1 while allowing 9B to rotate at a fixed position are provided.

  The sub-frame 21 is a connecting flange portion 210 connected to the main flange portion 201 of the main body portion 200, which closes the internal space of the main body portion 200 and forms the valve body accommodating chamber VR together with the main body portion 200. A second cylindrical portion 211 having a flange portion 210 and a first end and a second end in the second direction, the first end being connected to the connecting flange portion 210; A second piping flange 212 for connecting piping (not shown), and a second piping flange 212 connected to the second end of the second cylindrical portion 211.

  As a result, the main frame 20 and the subframe 21 are connected to each other, so that the main body 200 and the connecting flange 210 form a valve body accommodating chamber VR. Accordingly, the second main passage R <b> 2 is formed in the first cylindrical portion 202, and the first main passage R <b> 1 is formed in the second cylindrical portion 211. In the present embodiment, the reference axis L and the reference center line CL are orthogonal to each other. Accordingly, the first main passage R1 and the second main passage R2 are formed in a row in a second direction orthogonal to the reference axis L that is the rotation center of the valve body 3 in the valve body housing chamber VR.

  A seat member 4 is disposed concentrically or substantially concentrically with the first main passage R1 around the opening of the first main passage R1 on the valve element housing chamber VR side in the housing 2 (subframe 21), and the seat member 4 is valved. An annular recess 213 for accommodating the elastic member 5 biased toward the body 3 is formed.

  In the present embodiment, as shown in FIGS. 3 and 4, the annular recess 213 includes a large-diameter portion 213 a that opens toward the valve body storage chamber VR, and a medium-diameter portion 213 b that is set to have a smaller diameter than the large-diameter portion 213 a. The medium diameter portion 213b is continuous with the large diameter portion 213a, and the small diameter portion 213c is set to have a smaller diameter than the medium diameter portion 213b, and the small diameter portion 213c is continuous with the medium diameter portion 213b. The large-diameter portion 213a, the medium-diameter portion 213b, and the small-diameter portion 213c are each formed in a circular shape when viewed from the second direction, and are arranged concentrically with each other.

  In the present embodiment, the housing 2 (subframe 21) is provided with a vent hole 214 for supplying compressed air, which is a vent hole 214 penetrating the second cylindrical portion 211 in and out. Accordingly, in the second cylindrical portion 211 of the housing 2 (subframe 21), a cylindrical shape that guides the compressed air supplied from the vent hole 214 toward the sheet member 4 (a head portion 43 described later). A derivative 22 is arranged. The derivative 22 is formed so as to form a gap with the inner peripheral surface of the housing 2 (second cylindrical portion 211).

  More specifically, the derivative 22 is a cylindrical fluid guide part 220 set to have a smaller diameter than the inner diameter of the second cylindrical part 211, and has a first end and a second end in the second direction. A cylindrical fluid guide part 220 and a flange-shaped retaining part 221 connected to the first end of the fluid guide part 220 are provided. The derivative 22 is inserted into the second cylindrical portion 211 with the second end of the fluid guiding portion 220 on the valve body housing chamber VR side, and the retaining portion 221 is connected to the second piping over the entire circumference. It is made to contact with the flange 212 for use. Thereby, in the valve device 1 of the present embodiment, the inner hole of the fluid guide portion 220 of the derivative 22 defines the first main passage R1.

  In the present embodiment, the valve body 3 has a communication path R3 that passes through a virtual plane that is orthogonal or substantially orthogonal to the reference axis L, as shown in FIGS. The communication path R3 forms openings at two locations on the outer periphery of the valve body 3 around the reference axis L. The valve device 1 according to the present embodiment is a two-way valve. Accordingly, the valve body 3 is formed with a communication path R3 that opens at both ends in a direction orthogonal to the first direction. That is, the communication path R3 of the valve body 3 is formed so as to extend straight in a direction orthogonal to the reference axis L and to open at a symmetrical position with respect to the reference axis L. In connection with this, the valve body 3 has the sealing part 30 between the openings in two places on the outer periphery around the reference axis L (see FIG. 2). That is, the valve body 3 is formed in a spherical shape having a larger diameter than the opening diameters of the first main passage R1 and the second main passage R2. Thereby, the sealing part 30 which can oppose the opening whole area of 1st main channel | path R1 is formed on the outer periphery of the periphery of the reference axis line L in the valve body 3 (refer FIG. 2).

  In the present embodiment, the valve body 3 is provided so as to be tiltable about one end side in the extending direction of the reference axis L as a fulcrum. That is, the valve device 1 tilts the valve body 3 around one end in the first direction by rotating the first stem 9A, and rotates the valve body 3 around the reference axis L by rotating the second stem 9B. Rotate with.

  Accordingly, a first stem connection portion 31 to which the first stem 9A is operatively connected is formed on one end surface of the valve body 3 in the first direction (a surface facing the inner surface of the housing 2). The first stem connecting portion 31 is a recess into which the first stem 9A can be inserted. The inner peripheral surface of the first stem coupling portion 31 (concave portion) is a first pressing surface that is pressed against a cam surface 90 (described later) of the first stem 9A in a state where the sealing portion 30 faces the first main passage R1. S1 and a second pressing surface S2. Thereby, when the 1st press surface S1 is pressed by the cam surface 90 of 9 A of 1st stems, the valve body 3 is pressed by the 1st main channel | path R1 side, and 2nd by the cam surface 90 of 9 A of 1st stems. When the pressing surface S2 is pressed, it is pressed to the second main passage R2 side.

  In addition, a second stem coupling portion 32 to which the second stem 9B is operatively coupled is formed on the other end surface of the valve body 3 in the first direction (a surface facing the inner surface of the housing 2). The 2nd stem connection part 32 is made into the recessed part which can insert the 2nd stem 9B. The inner peripheral surface of the second stem connecting portion 32 (concave portion) is formed so as to be able to transmit a rotational torque around a reference axis L from a torque transmission surface 91 described later of the second stem 9B.

  As described above, the seat member 4 includes the seat surface 40 that is in close contact with the valve body 3 and the regulated portion 41 that faces the valve body accommodating chamber VR. This will be described more specifically. 3 and 4, the sheet member 4 is a sheet body 42 having a first end and a second end in a direction (second direction) in which the reference center line CL extends, and the first main passage R1. A cylindrical seat body 42 arranged concentrically or substantially concentrically, and an annular head portion 43 concentrically or substantially concentrically connected to the first end of the seat body 42, which protrudes into the valve body storage chamber VR. And a head portion 43 having a sheet surface 40.

  The sheet main body 42 has a cylindrical shape corresponding to the shape of the small-diameter portion 213c of the annular recess 213, and the second end is positioned in the small-diameter portion 213c. That is, the outer diameter of the seat body 42 is set to be the same as the inner diameter of the small diameter portion 213c or slightly smaller than the inner diameter of the small diameter portion 213c. As a result, a gap is formed between the sheet main body 42 and the inner peripheral surface that defines the intermediate diameter portion 213b of the annular recess 213. Accordingly, the seal member GP2 is interposed between the seat main body 42 and the inner peripheral surface that defines the middle diameter portion 213b of the annular recess 213. In the present embodiment, a cylindrical gland packing that expands in the radial direction by applying an axial compressive force is employed for the seal member GP2.

  The inner diameter of the head portion 43 is set to be the same as or substantially the same as the inner diameter of the sheet main body 42. On the other hand, the outer diameter of the head portion 43 is set to be larger than the outer diameter of the sheet main body 42. That is, the head portion 43 extends radially outward from the entire circumference of the first end of the sheet main body 42. And the seat surface 40 is formed in the part which faces the valve body storage chamber VR side in the head part 43. As shown in FIG. More specifically, the head portion 43 has a first end and a second end in the second direction. The first end of the head portion 43 is connected to the first end of the sheet main body 42. The inner peripheral surface of the head portion 43 is a tapered surface that expands from the first end toward the second end on the second end side, and the tapered surface partially protrudes over the entire circumference in the circumferential direction. An annular protrusion 430 is formed. Thereby, the sealing part 30 of the valve body 3 comes into contact with the tip of the protruding part 430. That is, the front end surface of the protrusion 430 constitutes the seat surface 40.

  The sheet member 4 according to the present embodiment includes a regulated portion 41 that protrudes radially outward on the outer periphery of the first end portion of the head portion 43. The regulated portion 41 is a surface facing the valve body accommodating chamber VR and has a surface facing the regulating portion 61. In the sheet member 4 according to the present embodiment, an annular convex portion 432 is formed on the outer edge portion of the first end surface of the head portion 43.

  The elastic member 5 is disposed in the large-diameter portion 213a of the annular recess 213. The elastic member 5 applies a force in the opposite direction to the seat member 4 and the housing 2 in the direction (second direction) in which the reference center line CL extends. This will be specifically described. A disc spring is adopted as the elastic member 5. In the present embodiment, the outer peripheral edge of the disc spring 5 abuts against the head portion 43 of the sheet member 4, while the inner peripheral edge of the disc spring 5 defines the inner diameter 213 b of the sheet main body 42 and the annular recess 213. It is in contact with a seal member (gland packing) GP2 interposed between the surface and the surface. As a result, the elastic member (disc spring) 5 urges the seat member 4 toward the valve body accommodation chamber VR, and between the seat body 42 and the inner peripheral surface defining the intermediate diameter portion 213b of the annular recess 213. The interposed seal member (gland packing) GP2 is radially expanded. In the sealing member 7 according to the present embodiment, the annular convex portion 432 is formed on the first end surface of the head portion 43, so the outer peripheral edge portion of the disc spring 5 is in contact with the annular convex portion 432. .

  As described above, the stopper member 6 includes the cylindrical interposing portion 60 interposed between the seat member 4 and the housing 2, and the restricted portion 41 facing the side opposite to the valve body accommodating chamber VR side. It has the regulation part 61 which opposes. More specifically, the stopper member 6 includes a cylindrical interposition part 60 having a first end and a second end in the second direction, and radially outward from the outer periphery of the first end of the interposition part 60. A ring-shaped (flange-shaped) fixing portion 62 that extends to the fixing portion 62 that is fixed along the inner surface of the housing 2 and a restriction portion 61 that is connected to the second end of the interposition portion 60. With.

  In the present embodiment, the outer diameter of the interposition part 60 is set to be the same diameter or substantially the same diameter as the inner diameter of the large diameter part 213a. And the interposition part 60 is inserted in the large diameter part 213a of the annular recessed part 213, and has made the outer peripheral surface closely_contact | adhere to the inner peripheral surface of the large diameter part 213a.

  The fixing portion 62 extends radially outward from the outer periphery of the first end portion of the interposition portion 60. In the present embodiment, the stopper member 6 is fixed to the large-diameter portion 213a by fixing the fixing portion 62 to the housing 2 in a state of being in surface contact with the inner surface of the housing 2 around the opening of the first main passage R1. The inserted interposition part 60 is arranged concentrically with respect to the sheet member 4 (head part 43) around the first main passage R1. Note that the fixing portion 62 of the stopper member 6 according to the present embodiment is fixed to the housing 2 by being sandwiched between the main frame 20 (main flange portion 201) and the subframe 21 (coupling flange portion 210).

  The restricting portion 61 is a surface facing the side opposite to the valve body accommodating chamber VR side, and has a surface facing the restricted portion 41. In the present embodiment, the restricting portion 61 is formed in an annular shape, and is concentrically or substantially concentrically connected to the second end of the interposition portion 60. The restricting portion 61 is formed so as to protrude inward from the inner periphery of the interposition portion 60. Specifically, in the present embodiment, as the restricting portion 61 is formed in an annular shape, the inner diameter of the restricting portion 61 is set to be smaller than the inner diameter of the interposition portion 60. Thereby, the inner peripheral edge of the restricting portion 61 extends inward from the inner periphery of the interposition portion 60. In the present embodiment, the inner diameter of the restricting portion 61 is set to be approximately the same as the outer diameter of the head portion 43 of the sheet member 4. Thereby, the regulation part 61 is comprised so that the head part 43 of the sheet | seat member 4 can be guided to the direction (2nd direction) where the reference | standard centerline CL is extended by the inner side front-end | tip (inner peripheral surface).

  Since the stopper member 6 according to the present embodiment projects the inner peripheral edge of the restricting portion 61 inward from the inner periphery of the interposition part 60, the inner peripheral surface of the interposition part 60 and the head part of the sheet member 4 A gap is formed between the outer peripheral surface of 43. Accordingly, the seal member 7 is interposed between the interposition part 60 and the head part 43. In this embodiment, the seal member 7 employs a cylindrical gland packing that expands in the radial direction by applying an axial compressive force.

  The fixing member 8 is an annular insertion portion 80 having a first end and a second end in a direction in which the reference center line CL extends, and the insertion portion 80 is inserted between the sheet member 4 and the interposition portion 60. And an annular positioning portion 81 connected to the first end of the insertion portion 80, and a positioning portion 81 fixed to the housing 2 in a state of being disposed on the fixing portion 62 of the stopper member 6. .

  The fixing member 8 fixes the positioning portion 81 on the fixing portion 62 of the stopper member 6, whereby the insertion portion 80 is inserted between the sheet member 4 and the interposition portion 60, and the sheet member 4 (head portion) 43). In the present embodiment, since the gland packing is adopted for the seal member 7, the second end of the insertion portion 80 inserted between the sheet member 4 and the interposition portion 60 is used as the fixing member 8. The (gland packing) 7 is pressed against the regulating portion 61 side. Thereby, the cylindrical seal member (gland packing) 7 is sandwiched between the insertion portion 80 and the restriction portion 61. That is, the seal member 7 is compressed in the axial direction. Thereby, the seal member 7 expands radially outward and contracts radially inward, and is in close contact with the seat member 4 and the interposition part 60.

  Returning to FIGS. 1 and 2, the first stem 9 </ b> A is inserted into the first stem insertion portion 204 of the housing 2, and one end side is positioned outside the housing 2, while the other end side is positioned inside the housing 2. ing. A handle and an actuator (not shown) are attached to one end of the first stem 9A. Thereby, the first stem 9A is rotated around the reference axis L by a handle operation or an actuator operation. The other end portion of the first stem 9A is inserted into the first stem connecting portion 31 of the valve body 3 in the valve body housing chamber VR. A cam surface 90 having a center of curvature is formed at a position eccentric to the reference axis L at the other end of the first stem 9A. Accordingly, the first stem 9A is rotated around the reference axis L, so that the cam surface 90 presses the first pressing surface S1 of the valve body 3, and the cam surface 90 is the second pressing surface S2 of the valve body 3. It switches to the state which pressed.

  The second stem 9 </ b> B is inserted into the second stem insertion portion 205 of the housing 2, and one end side is positioned outside the housing 2, while the other end side is positioned inside the housing 2. A handle and an actuator (not shown) are attached to one end of the second stem 9A. As a result, the second stem 9B is rotated around the reference axis L by a handle operation or an actuator operation. The other end of the second stem 9B is inserted into the second stem connecting portion 32 of the valve body 3 in the valve body housing chamber VR. On the outer periphery of the other end portion of the second stem 9B, there is a torque transmission surface 91 extending in a direction orthogonal to the reference axis L, and torque transmission that can come into surface contact with the inner peripheral surface of the second stem connection portion 32 of the valve body 3. A surface 91 is formed. Thereby, by rotating the second stem 9B around the reference axis L, the torque transmission surface 91 transmits rotational torque to the torque transmission surface 91 of the valve body 3, and the valve body 3 is rotated about the reference axis L. It has become. And the other end part of the 2nd stem 9B is supporting the valve body 3 so that tilting is possible.

  The valve device 1 according to the present embodiment is as described above. Next, the operation of the valve device 1 will be described.

  First, when the distribution object is distributed, the first stem 9A is rotated so that the cam surface 90 presses the second pressing surface S2. In this state, the valve body 3 stands up, and the sealing portion 30 is not in contact with the seat member 4 (seat surface 40) in the peripheral portion of the opening of the first main passage R1 in the housing 2. That is, the seat member 4 is pushed toward the valve body storage chamber VR by the urging force of the elastic member 5 to bring the regulated portion 41 into contact with the regulated portion 41 of the stopper member 6.

  This prevents the sheet member 4 from falling off. Then, the second stem 9B is rotated, the valve body 3 is rotated around the reference axis L, and the valve body 3 is disposed so that the communication path R3 corresponds to the first main path R1 and the second main path R2. At this time, the valve body 3 rotates in a non-contact state with the seat member 4 (seat surface 40) and the inner surface of the housing 2. Then, when the communication path R3 is in a state corresponding to the first main path R1 and the second main path R2, the distribution object can flow from the first main path R1 to the second main path R2 via the communication path R3. It becomes.

  On the other hand, when blocking the flow of the flow object, the second stem 9B is rotated in the reverse direction, the valve body 3 is rotated in the reverse direction around the reference axis L, and the sealing portion 30 of the valve body 3 is connected to the first main passage R1. Make it pointed to. At this time, the valve body 3 rotates in a non-contact state with the seat member 4 (seat surface 40) and the inner surface of the housing 2. Even in this state, the sheet member 4 is pushed toward the valve body storage chamber VR by the urging force of the elastic member 5 to bring the regulated portion 41 into contact with the regulated portion 41 of the stopper member 6. And if the sealing part 30 of the valve body 3 will be in the state facing 1st main channel | path R1, the 1st stem 9A will be rotated.

  Thereby, the cam surface 90 of the first stem 9A presses the first pressing surface S1. Along with this, the valve body 3 tilts toward the first main passage R1 with the second stem 9B as a fulcrum, and the seat of the sheet member 4 in which the sealing portion 30 is in the peripheral portion of the opening of the first main passage R1. Close to surface 40. That is, as the valve body 3 tilts, the sealing portion 30 of the valve body 3 presses the sheet member 4 to the side opposite to the valve body accommodating chamber VR side, and moves the sheet member 4 in the second direction.

  Accordingly, the regulated portion 41 is separated from the regulating portion 61. Thereby, as a result of the elastic member 5 being bent by a bending amount corresponding to the movement amount of the sheet member 4, substantially the entire amount of the urging force of the elastic member 5 acts on the sheet member 4, and the sheet member 4 (sheet surface 40) is moved. The valve body 3 is in close contact with the sealing portion 30 while applying an appropriate pressure contact force.

  Thereby, 1st main channel | path R1 is interrupted | blocked and the distribution | circulation of the distribution object toward 2nd main channel | path R2 becomes impossible.

  When the distribution object is a solid such as powder, as described above, when the valve body 3 is changed in posture and separated from the sheet member 4, the distribution object flows into the valve body accommodating chamber VR. However, in the valve device 1 configured as described above, the sealing member 7 seals between the seat member 4 and the interposition part 60 of the stopper member 6 on the valve body accommodating chamber VR side with respect to the regulating part 61. The distribution object flowing into the storage chamber VR does not reach the region where the restricting portion 61 and the restricted portion 41 exist through the space between the sheet member 4 and the stopper member 6 material.

  Therefore, the flow target object does not enter between the regulating portion 61 and the regulated portion 41, and the sheet member 4 moves in the direction in which the reference center line CL extends (second direction in the present embodiment) over a long period of time. It becomes possible.

  As described above, the valve device 1 according to the present embodiment includes the housing 2 in which the valve body housing chamber VR is formed and the two main passages R1 and R2 continuous with the valve body housing chamber VR are formed. A valve body 3 rotatably provided around the reference axis L in the body storage chamber VR, and having a sealing portion 30 that can be opposed to the entire opening of the main passage R1 in the housing 2; An annular seat member 4 disposed around the main passage R1 on the valve body accommodating chamber VR side and provided so as to be movable in the direction in which the reference center line CL extends, and has a seat surface 40 that is in close contact with the valve body 3. A sheet member 4 having a regulated portion 41 facing the valve body storage chamber VR; an elastic member 5 that urges the sheet member 4 toward the valve body storage chamber VR; and a sheet member 4 that is externally fitted to the sheet member 4 A cylindrical shape interposed between the housing 2 A stopper member 6 having a restricting portion 61 facing the restricted portion 41 toward the opposite side to the mounting portion 60 and the valve body accommodating chamber VR side, the stopper member 6 fixed to the housing 2, and the restricting portion 61. The seal member 7 is further provided that seals between the seat member 4 and the interposition part 60 of the stopper member 6 on the valve body accommodating chamber VR side.

  According to the valve device 1, the flow target object flows from one main passage R1 to the other main passage R2 in a state where the sealing portion 30 of the valve body 3 is not opposed to the main passage R1 of the housing 2. It becomes possible. On the other hand, in a state where the sealing portion 30 of the valve body 3 faces the main passage R1, the sheet member 4 is in close contact with the sealing portion 30 of the valve body 3 facing the periphery of the main passage R1, and the main passage R1 is formed. Cut off.

  Specifically, the sheet member 4 is separated from the stopper member 6 by the pressure contact of the valve body 3 (the regulated portion 41 is separated from the regulating portion 61), so that the reference center line CL extends. Can move in any direction. Thereby, as a result of the sheet member 4 trying to move to the valve body 3 side by the urging of the elastic member 5, the sheet member 4 is appropriate with respect to the sealing portion 30 of the valve body 3 (annular region facing the periphery of the main passage R1). It is intimately touching with a large pressure. As a result, the main passage R1 is reliably blocked while the sealing portion 30 of the valve body 3 faces the main passage R1.

  In the valve device 1 configured as described above, the seat member 4 is provided so as to be movable in the direction in which the reference center line CL extends, and is urged toward the valve body 3 (valve body housing chamber VR) by the elastic member 5. Therefore, the sheet member 4 tries to move toward the valve body storage chamber VR, but if the sheet member 4 tries to move excessively toward the valve body storage chamber VR, the sheet member is placed on the regulating portion 61 of the stopper member 6. Four regulated portions 41 come into contact (interference).

  Thereby, excessive movement of the sheet member 4 is restricted, and for example, detachment from the peripheral portion of the opening of the main passage R1 in the sheet member 4 is prevented. In the valve device 1 configured as described above, as in the conventional valve device, the valve body accommodation chamber VR is in communication with the main passage R1 due to the posture change or the position change of the valve body 3 accompanying the opening and closing of the main passage R1. become.

  However, in the valve device 1 having the above-described configuration, the seal member 7 seals between the seat member 4 and the interposition portion 60 of the stopper member 6 on the valve body housing chamber VR side with respect to the restricting portion 61, so that the valve body is accommodated. The distribution object flowing into the chamber VR does not pass between the sheet member 4 and the stopper member 6 to reach the region where the restricting portion 61 and the restricted portion 41 exist.

  Therefore, the flow object does not enter between the restricting portion 61 and the restricted portion 41, and the sheet member 4 can move in the direction in which the reference center line CL extends over a long period of time. Thereby, as a result of the sheet member 4 trying to move to the valve body 3 side by the urging of the elastic member 5, the sheet member 4 is appropriate with respect to the sealing portion 30 of the valve body 3 (annular region facing the periphery of the main passage R1). It is intimately touching with a large pressure.

  Therefore, the valve device 1 having the above-described configuration can reliably block the main passages R1 and R2 even if the valve device 1 is disposed on a pipe whose solid is a powder or the like.

  Further, in the present embodiment, the valve body 3 is provided so as to be tiltable with one end side in the extending direction of the reference axis L as a fulcrum in a state where the sealing portion 30 faces the main passage R1. As a result, the valve body 3 tilts to switch between the state in which the sealing portion 30 of the valve body 3 is in close contact with the sheet member 4 and the state in which the sealing portion 30 of the valve body 3 is separated from the sheet member 4. Can do.

  Accordingly, the valve body 3 can rotate around a predetermined axis while being separated from the seat member 4. Therefore, when the main passage R1 is opened and closed (the valve body 3 is rotated), the valve body 3 is not slidably contacted with the seat member 4, and wear of the seat member 4 is suppressed. Thereby, as a result of ensuring the close contact between the valve body 3 and the seat member 4, the main passages R1 and R2 can be properly blocked over a long period of time.

  The restricting portion 61 of the stopper member 6 is formed so as to protrude inward from the inner periphery of the interposition portion 60, and is configured to be able to guide the outer periphery of the sheet member 4 in the direction in which the reference center line CL extends. According to such a configuration, when the sheet member 4 moves in the direction in which the reference center line CL extends, the sheet member 4 moves on a prescribed trajectory. That is, the seat member 4 is guided by the tip of the restricting portion 61, whereby the seat member 4 can be smoothly moved, and the seat member 4 is in close contact with the valve body 3 in an appropriate state.

  In addition, the interposition part 60 has a first end and a second end in the direction in which the reference center line CL extends, and the stopper member 6 extends radially outward from the outer periphery of the first end of the interposition part 60. It is further provided with a fixed fixing part 62 that is fixed in a state along the inner surface of the housing 2 in the valve body accommodating chamber VR, and the restricting part 61 is a second end of the interposition part 60. It is connected to. According to such a configuration, the stopper member 6 is fixed to the housing 2 in an appropriate posture. Therefore, the regulated portion 41 of the sheet member 4 stably interferes (contacts) with the regulating portion 61 of the stopper member 6, and the movement of the sheet member 4 can be more appropriately regulated.

  Further, the valve device 1 according to the present embodiment is an annular insertion portion 80 having a first end and a second end in a direction in which the reference center line CL extends, and is between the seat member 4 and the interposition portion 60. And an annular positioning portion 81 connected to the first end of the insertion portion 80, and is fixed to the housing 2 while being disposed on the fixing portion 62 of the stopper member 6. A fixing member 8 having a positioning portion 81 is provided, and the seal member 7 is a gland packing disposed between the sheet member 4 (head portion 43) and the interposition portion 60, and the sheet member 4 and the interposition portion The sheet member 4 and the interposition part 60 are brought into close contact with each other by being pressed toward the regulating part 61 by the second end of the insertion part 80 inserted between the sheet part 4 and the sheet part 4.

  According to such a configuration, not only the stopper member 6 is properly fixed to the housing 2, but also the sealing performance between the seat member 4 and the interposition part 60 is enhanced. That is, the gland packing is in close contact with the interposition part 60 and the sheet member 4 in a wide range in the direction in which the reference center line CL extends.

  Therefore, it is possible to more reliably prevent a flow object such as powder from passing between the sheet member 4 and the stopper member 6, and to ensure the movement of the sheet member 4.

  Further, in the present embodiment, the sheet member 4 is a sheet body 42 having a first end and a second end in the direction in which the reference center line CL extends, and is a cylinder disposed concentrically or substantially concentrically with the main passage R1. A sheet body 42 and a head portion 43 having a seat surface 40 protruding to the valve body accommodating chamber VR side, and the outer diameter of the sheet body 42 is set to be smaller than the outer diameter of the head portion 43. In addition, the regulated portion 41 is provided on the outer periphery of the head portion 43, the interposition portion 60 of the stopper member 6 is fitted on the head portion 43 of the sheet member 4, and the elastic member 5 includes the head portion 43 and the housing 2. Between.

  According to such a configuration, the sheet member 4 and the elastic member 5 can be arranged in an overlapping manner in the direction in which the reference center line CL extends. That is, the seat member 4 and the elastic member 5 are urged toward the valve body accommodating chamber VR by the elastic member 5 without being aligned in a line in the direction in which the reference center line CL extends. Thereby, even if the configuration in which the seat member 4 is urged by the elastic member 5 is adopted, the size of the entire valve device 1 is prevented from increasing.

  In addition, this invention is not limited to the said embodiment, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

  In the above embodiment, the valve body 3 is provided so as to be tiltable with any one side of the reference axis L as a fulcrum, and the sealing portion 30 of the valve body 3 is configured to be able to contact and separate from the sheet member 4 (seat surface 40). However, it is not limited to this. For example, even if the rotation center of the valve body 3 is eccentric and the valve body 3 is rotated, the sealing portion 30 of the valve body 3 comes in contact with and separates from the sheet member 4 (sheet surface 40). Good. Moreover, it is not limited to what the valve body 3 contacts / separates with respect to the sheet | seat member 4 (seat surface 40). For example, the seat member 4 (seat surface 40) may be in close contact with the valve body 3 at all times. That is, a so-called ball valve in which the valve body 3 is formed in a spherical shape and the seat member 4 is always in close contact with the outer surface of the valve body 3 may be used. Therefore, the valve body 3 is not limited to the one having the first stem 9A and the second stem 9B (two axes), but may be one in which the valve body 3 is rotated by one axis.

  In the above embodiment, the seat member 4 is provided only on the first main passage R1 side on the premise that the valve element 3 comes in contact with and separates from the seat member 4 with the opening and closing of the flow path, but the present invention is not limited to this. . For example, when the valve body 3 is configured to be tiltable also on the second main passage R2 side, the seat member 4, the elastic member 5, the stopper member 6 and the like may be disposed also on the second main passage R2 side. In particular, as described above, if the seat member 4 (seat surface 40) is always in close contact with the valve body 3, the seat member 4 and the elastic member are provided on both the first main passage R1 side and the second main passage R2 side. 5. Needless to say, the stopper member 6 and the like are arranged.

  In the said embodiment, although the two-way valve which has two main channel | paths R1 and R2 was demonstrated, it is not limited to this. For example, a multi-way valve having three or more main passages around the valve body accommodating chamber VR may of course be used.

  In the above embodiment, the sheet member 4 includes the sheet main body 42 and the head portion 43 having different diameters, but the sheet main body 42 and the head portion 43 may have the same diameter. Needless to say, in this case, the elastic member 5 biases the seat body 42.

  In the above embodiment, the regulated portion 41 protruding radially outward is provided on the sheet member 4 and the regulating portion 61 protruding radially inward is provided on the stopper member 6, but is not limited thereto. For example, by forming a groove on the outer periphery of the seat member 4, a wall-like regulated portion 41 having a surface facing the valve body accommodating chamber VR side is provided, and a restriction projecting on the inner circumference of the stopper member 6 is provided. It is the part 61, Comprising: The regulation part 61 which is inserted in a groove | channel and has a surface facing the to-be-regulated part 41 in this groove | channel may be provided.

  On the other hand, by forming a groove on the inner periphery of the stopper member 6 (interposition part 60), the wall-shaped restricting part 61 having a surface facing the side opposite to the valve body accommodating chamber VR side is formed. Even if a regulated portion 41 is provided which is provided on the outer periphery of the sheet member 4 and has a surface which is inserted into the groove and faces the regulating portion 61 in the groove. Good.

  In these cases, it goes without saying that the restricting portion 61 and the restricted portion 41 are provided so as to be able to contact and separate in the direction in which the reference center line CL extends in order to allow movement of the sheet member 4. Needless to say, the seal member 7 is disposed so as to be able to seal between the seat member 4 and the interposition part 60 of the stopper member 6 on the valve body accommodating chamber VR side with respect to the restriction part 61.

  In the above embodiment, the restricting portion 61 is provided at the end portion of the interposition portion 60 and the restricted portion 41 is provided at the end portion of the head portion 43 of the sheet member 4, but is not limited thereto. For example, the restricting portion 61 may be provided in the middle position of the interposition portion 60, and the restricted portion 41 may be provided in the middle position of the head portion 43. However, when the seat member 4 moves to the valve body storage chamber VR side and reaches a predetermined position, it goes without saying that the restricting portion 61 and the restricted portion 41 interfere with each other. Also in this case, it goes without saying that the seal member 7 seals between the seat member 4 and the interposition part 60 closer to the valve body accommodation chamber VR than the restriction part 61.

  In the said embodiment, although each of the control part 61 and the to-be-controlled part 41 was formed in the cyclic | annular form continued in the circumferential direction, it is not limited to this. For example, the regulating part 61 and the regulated part 41 may be intermittently or partially arranged in the circumferential direction. However, it goes without saying that the restricting portion 61 and the restricted portion 41 are arranged so as to oppose (confront) each other in the direction in which the reference center line CL extends.

  In the above embodiment, the gland packing is used for the seal member 7 disposed between the sheet member 4 and the interposition part 60 of the stopper member 6, but the present invention is not limited to this. For example, the seal member 7 may be a square ring, an O-ring, or the like.

  In this case, providing a groove for interposing the seal member 7 on either the outer periphery of the sheet member 4 or the inner periphery of the interposition part 60 of the stopper member 6, and bringing the seal member 7 in the groove into close contact with the other Needless to say. In this case, since it is not necessary to press the seal member 7 in the direction in which the reference center line CL extends, it is needless to say that the fixing member 8 is not an essential requirement. The same applies to the seal member GP2 between the sheet main body 42 of the sheet member 4 and the inner peripheral surface defining the medium diameter portion 213b of the annular recess 213.

  In the above embodiment, a disc spring is employed as the elastic member 5, but is not limited thereto. For example, the elastic member 5 may be a compression coil spring or the like, or may be a rubber member.

  In the said embodiment, although the valve apparatus 1 which can supply compressed air to the sheet | seat member 4 was demonstrated, it is not limited to this. For example, it may not be provided with a configuration that allows compressed air to be supplied toward the sheet member 4.

  DESCRIPTION OF SYMBOLS 1 ... Valve apparatus, 2 ... Housing, 3 ... Valve body, 4 ... Seat member, 5 ... Elastic member (disc spring), 6 ... Stopper member, 7 ... Seal member (gland packing), 8 ... Fixing member, 9A ... No. One stem, 9A ... second stem, 20 ... main frame, 21 ... sub-frame, 22 ... derivative, 30 ... sealed portion, 31 ... first stem connecting portion, 32 ... second stem connecting portion, 40 ... sheet surface, 41 ... Restricted part, 42 ... Seat body, 43 ... Head part, 60 ... Interposing part, 61 ... Restricting part, 62 ... Fixed part, 80 ... Inserting part, 81 ... Positioning part, 90 ... Cam surface, 91 ... Torque transmission surface, 200 ... main body, 201 ... main flange, 202 ... first cylindrical part, 203 ... first piping flange, 204 ... first stem insertion part, 205 ... second stem insertion part, 206A, 206B ... Pushing member, 210 ... Linking franc 211, second cylindrical part, 212 flange for second piping, 213 annular ring, 213a large diameter part, 213b medium diameter part, 213c small diameter part, 214 vent hole, 220 fluid guide part 221 ... prevention part, 430 ... protrusion part, 432 ... annular convex part, GP1 ... gland packing, GP2 ... seal member (gland packing), L ... predetermined axis (reference axis), CL ... center line of the main passage (reference) (Center line), R1 ... main passage (first main passage), R2 ... main passage (second main passage), R3 ... communication passage, S1 ... first pressing surface, S2 ... second pressing surface, VR ... valve body accommodation Room

Claims (6)

  A housing in which a valve body housing chamber is formed and at least two main passages continuous with the valve body housing chamber are formed; and a valve body rotatably provided around a predetermined axis in the valve body housing chamber. And a valve body having a sealing portion that can be opposed to the entire opening of the main passage in the housing, and disposed around the main passage on the valve body housing chamber side so as to be movable in a direction in which the center line of the main passage extends. An annular seat member having a seat surface in close contact with the valve body and having a regulated portion facing the valve body housing chamber; an elastic member for biasing the sheet member toward the valve body housing chamber; A stopper member having a cylindrical interposing portion that is externally fitted to the seat member and interposed between the seat member and the housing, and a regulating portion facing the regulated portion facing away from the valve body housing chamber side. And fixed to the housing And the stopper member, the valve device characterized by comprising a seal member for sealing between the interposed portion of the sheet member and the stopper member in the valve body accommodating chamber side than the regulating unit.   2. The valve device according to claim 1, wherein the valve body is provided to be tiltable about one end side in a direction in which a predetermined axis extends in a state where the sealing portion faces the main passage.   3. The valve according to claim 1, wherein the restriction portion of the stopper member is formed so as to protrude inward from the inner periphery of the interposition portion, and is configured to be able to guide the outer periphery of the seat member in a direction in which the center line of the main passage extends. apparatus.   The interposition part has a first end and a second end in a direction in which the center line of the main passage extends, and the stopper member has an annular shape extending radially outward from the outer periphery of the first end of the interposition part. 4. The fixing unit according to claim 3, further comprising a fixing unit that is fixed in a state along the inner surface of the housing in the valve body housing chamber, and the restricting unit is connected to the second end of the interposition unit. Valve device.   An annular insertion portion having a first end and a second end in a direction in which the center line of the main passage extends, the insertion portion being inserted between the sheet member and the interposition portion, and the first end of the insertion portion An annular positioning portion connected to the stopper member, and a fixing member having a positioning portion fixed to the housing in a state of being disposed on the fixing portion of the stopper member. A gland packing disposed between the sheet member and the interposed part, and is pressed against the regulating part side by the second end of the insertion part inserted between the sheet member and the interposed part and closely contacts the sheet member and the interposed part. The valve device according to claim 4.   The seat member is a seat body having a first end and a second end in a direction in which a center line of the main passage extends, a cylindrical seat body disposed concentrically or substantially concentrically with the main passage, and a seat body An annular head portion concentrically or substantially concentrically connected to the first end, the head portion having a seat surface protruding to the valve body housing chamber side, and the outer diameter of the seat body is outside the head portion The regulated portion is provided on the outer periphery of the head portion, the interposed portion of the stopper member is fitted on the head portion of the sheet member, and the elastic member includes the head portion and the housing. The valve device according to any one of claims 1 to 5, which is disposed between the two.

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