JP5986760B2 - Non-contact valve device - Google Patents

Description

  The present invention relates to a non-contact type valve device in which a valve body is rotatably provided in a non-contact state with respect to a seat member disposed in a housing.

  2. Description of the Related Art Conventionally, as one of valve devices for opening / closing or switching a flow path for circulating an object such as fluid or powder (hereinafter referred to as a distribution object in this specification), a predetermined axis (hereinafter referred to as a predetermined axis) is used. A valve body that is provided rotatably around an axis line (referred to as a reference axis line) and that has a communication passage penetrating perpendicularly or substantially perpendicular to the reference axis line, and a valve body housing chamber that houses the valve body are formed. In addition, at least two flow passages that can communicate with each other via a communication passage of a valve body that is built in the valve body storage chamber (for example, two flow passages in the case of a two-way valve, three flow passages in the case of a three-way valve) There is provided a valve device including a housing in which two flow passages and the like are formed (see, for example, Patent Document 1).

  In such a valve device, an annular seat member is disposed around the opening end on the inner side in the flow passage formed in the housing. And, this type of valve device rotates the valve body around the reference axis, so that the flow path of the housing communicates with the communication path of the valve body (a state in which the flow of the flow object is allowed), The non-penetrating portion of the valve body is in close contact with the seat member, and the valve body is switched to a state in which the flow passage of the housing is blocked (a state in which the flow of the flow object is blocked).

  Then, if the valve body rotates with the valve body and the seat member in contact with each other, the seat member will be worn away and the flow path cannot be properly blocked. There is provided a non-contact type valve device configured to rotate in a non-contact manner.

  The valve body of such a non-contact type valve device is provided with recesses at both side positions passing on the reference axis. Based on this assumption, in addition to the above-described configuration, the non-contact type valve device includes a first shaft that is inserted into the housing so as to pass on a reference axis that is a rotation center of the valve body, and a side opposite to the first shaft. And a second shaft inserted through the housing.

  The first shaft has a first end and a second end. The first end of the first shaft is disposed inside the housing, and the second end of the first shaft is disposed outside the housing. The first end of the first shaft is inserted into one recess of the valve body. And the 1st end part of the 1st axis | shaft is supporting the valve body so that tilting is possible in the state which can transmit the rotational force of the surroundings of a reference axis line with respect to a valve body.

  The second shaft is provided concentrically with the first shaft so as to be rotatable. The second shaft has a first end and a second end. The first end of the second shaft is disposed inside the housing, and the second end of the second shaft is disposed outside the housing. The first end of the second shaft is inserted into the other recess of the valve body. The first end portion of the second shaft is provided with a pressing portion capable of pressing the inner peripheral surface in the recess when the non-penetrating portion of the valve body faces the seat member.

  As a result, this type of non-contact type valve device rotates the first shaft around the reference axis so that the valve body rotates in a non-contact state with respect to the seat member, and the communication passage of the valve body flows through the housing. A state in which the passage is in communication (a state in which the flow target is circulated) and a state in which the non-penetrating portion of the valve body is interposed between the flow passages of the housing (a state in which the non-penetrating portion of the valve body faces the flow passage) It is designed to switch. The non-contact type valve device is configured such that the non-penetrating portion of the valve body rotates around the reference axis of the second shaft in a state where the non-penetrating portion of the valve body faces the flow passage of the housing, so The inner peripheral surface is pressed. As a result, the non-contact type valve device tilts the valve body toward the seat member, and closes the non-penetrating portion of the valve body to the seat member (blocks the flow passage).

JP 2008-95811 A

  By the way, this kind of non-contact type valve device can secure a sealing property over a long period of time (excellent wear resistance of the seat member), and not only liquids and gases but also solids (for example, various raw materials and incineration) It is used to open and close a flow channel that uses the ash of equipment) as a distribution object.

  However, in the non-contact type valve device having the above configuration, when the flow path is opened, the valve body is in a state of being spaced from the housing and the seat member. Therefore, in the non-contact valve device, when the flow path is opened, the flow target object flows between the valve body and the housing, and the flow target object enters the recess provided in the valve body. is there. For this reason, the flow object may accumulate in the recess of the valve body in which the first end of the second shaft is inserted, and the tilting of the valve body may be hindered.

  More specifically, when a flow object enters the recessed portion of the valve body into which the first end of the second shaft is inserted, the flow object moves to the inner periphery of the pressing portion of the second shaft and the recessed portion of the valve body. When the second shaft is rotated around the reference axis (the inner surface of the recess is pressed by the pressing portion), the distribution object damages the inner surface of the pressing portion or the recess. Or wear out. As a result, the pressing portion cannot properly press the inner peripheral surface of the concave portion of the valve body, and the pressing force on the inner peripheral surface of the concave portion by the pressing portion is insufficient. Therefore, there is a problem that the valve body does not tilt to the required amount of the sheet member side, resulting in poor contact between the valve body and the seat member.

  In particular, when the distribution object is a fine powder (for example, ash of an incineration facility) or a liquid (for example, a monomer or the like) that promotes a polymerization reaction and stays when left standing, The entering distribution object is compressed with the rotation of the second shaft (pressing portion) and compacted in the recess, and the second shaft (pressing portion) is difficult to rotate. As a result, there is a problem that the valve body does not tilt smoothly and the flow path cannot be reliably blocked.

  Then, this invention makes it a subject to provide the non-contact-type valve apparatus which can ensure a sealing performance over a long term, without raise | generating tilting failure of a valve body in view of such a situation.

A non-contact type valve device according to the present invention is provided so as to be rotatable around a predetermined axis, and has a valve body formed with a communication passage penetrating orthogonally or substantially orthogonally to the predetermined axis, and the valve body A housing in which a valve body housing chamber is formed, and at least two flow passages communicating with each other via the communication passage of the valve body in the valve body housing chamber; An annular sheet member disposed around the opening end on the inner side of at least one of the flow passages, and the housing is inserted so as to pass on the predetermined axis, and is rotatable around the predetermined axis A first shaft connected to the valve body so as to transmit a rotational force around the predetermined axis, and inserted through the housing from the opposite side of the first shaft, Concentric or nearly concentric times A second shaft, the valve body having a recess disposed on an outer surface through which the predetermined axis passes, and the second shaft is a first end disposed inside the housing. A first end disposed in the recess of the valve body, and a second end disposed on the outside of the housing, the second end opposite to the first end. And a pressing portion capable of pressing the inner peripheral surface of the concave portion in a state where the non-penetrating portion of the valve body faces the seat member is provided at the first end portion of the second shaft. In the non-contact type valve device configured to bring the valve body into contact with and away from the seat member by pressing the inner peripheral surface of the concave portion by a portion, the second shaft includes a fluid path through which fluid flows, The fluid path has a first open end and a second open end, and the first open end is open at the first end of the second shaft. And, the second open end, characterized in that it is configured to supply the fluid from the outside open at the second end side of the second shaft.

  According to the non-contact type valve device having the above-described configuration, when the flow path is opened, the valve body is spaced from the housing and the seat member. Therefore, the target object flowing through the flow path may flow between the valve body and the housing, and the flow target object may enter a recess provided in the valve body. However, by supplying the fluid from the outside to the second open end of the fluid path, the flow target that has entered the recess of the valve body (the recess accommodated in the first end of the second shaft) is removed from the first of the fluid path. The fluid flowing out from one open end can be blown out (excluded from the recess) from the inside of the recess. Thereby, the flow object is compacted in the concave portion of the valve body, or the pressing portion (second shaft) rotates with the flow target object interposed between the pressing portion and the inner peripheral surface of the concave portion of the valve body. It will never be done. Therefore, the non-contact valve device having the above-described configuration can prevent the second shaft (pressing portion) and the valve body (inner peripheral surface of the recess) from being worn, and the like. The smoothness of rotation of the shaft can be ensured. Thereby, the valve body can be tilted to the seat member side by a necessary amount by rotation around the axis of the second shaft (pressing of the inner peripheral surface of the recess by the pressing portion), and the sealing performance between the valve body and the housing Can be secured over a long period of time.

  Further, as one aspect of the present invention, the housing has a shaft insertion portion formed with a shaft insertion hole through which the second shaft is inserted, and passes through the shaft insertion portion and is opened toward the shaft insertion hole. A fluid supply path having an internal open end and an external open end open to the outside, the fluid supply path configured to be able to supply fluid from the external open end, and the shaft of the second shaft The portion in the insertion portion is provided with at least two annular protrusions arranged at intervals in the predetermined axial direction, each protruding radially outward from the entire outer periphery of the second shaft, The second open end and the internal open end are preferably open between the annular projecting portions adjacent in the predetermined axial direction.

  In this way, the flow path (second open end) and the fluid supply path (internal open end) communicate with each other through the space formed between the annular protrusions. Therefore, even if the second shaft is rotated around the axis (even if the valve body rotates), the fluid supply path and the fluid path communicate with each other. Therefore, when supplying the fluid from the outside, the fluid can be supplied from the outside to the concave portion of the valve body without aligning the flow path (second open end) and the fluid supply path (internal open end).

  As another aspect of the present invention, the concave portion has a bottom portion facing the second shaft, a first open end of the fluid path opens toward the bottom portion, and the bottom portion includes the It is preferable that a convex portion protruding toward the opening on the one end side where the fluid path is opened is formed. If it does in this way, the fluid which flows out out of the opening of the open end of the fluid path will be guided to the convex part, and will be diffused in the concave part. Therefore, it is possible to blow away the distribution object that has entered the recess of the valve body in a wider range.

  Furthermore, as another aspect of the present invention, it is preferable that the first open end of the fluid path is opened at a plurality of locations of the first end of the second shaft. If it does in this way, the fluid supplied to the 2nd open end will flow out from a plurality of places (a plurality of 1st open ends) of the 1st counter part of the 2nd axis in the crevice of a valve element. Therefore, the fluid from the outside can be sprayed over a wide range in the concave portion, and the flow target attached to the inner peripheral surface of the pressing portion or the concave portion can be surely skipped and eliminated.

  As described above, according to the non-contact valve device of the present invention, it is possible to achieve an excellent effect that the sealing performance can be ensured over a long period of time without causing the valve body to tilt poorly.

FIG. 1 is a cross-sectional view of a non-contact valve device according to an embodiment of the present invention. FIG. 2 is a partial cross-sectional view of the non-contact valve device, and is a cross-sectional view taken along the line II of FIG. FIG. 3 is an enlarged cross-sectional view of a main part of the non-contact valve device. FIG. 4 is an enlarged cross-sectional view of a main part of a non-contact valve device according to another embodiment of the present invention. FIG. 5 is an enlarged cross-sectional view of a main part of a non-contact valve device according to another embodiment of the present invention.

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

  A non-contact type valve device (hereinafter simply referred to as a valve device) according to the present embodiment is a two-way valve for switching between blocking and opening of a flow path through which a flow target is circulated. That is, in the valve device according to the present embodiment, two pipes constituting the flow path are connected and switched between a state in which the flow target can flow and a state in which the flow target cannot flow between the pipes. Be able to.

  As shown in FIG. 1, the non-contact valve device is provided so as to be rotatable around a predetermined axis line L (hereinafter, the predetermined axis line is referred to as a reference axis line) L and is orthogonal or substantially orthogonal to the reference axis line L. A valve body 2 in which a penetrating communication path R1 is formed and a valve body housing chamber 30 for housing the valve body 2 are formed, and via the communication path R1 of the valve body 2 in the valve body housing chamber 30 And a housing 3 in which two flow passages R2 and R3 communicating with each other are formed.

  Further, in addition to the above configuration, the valve device 1 is inserted into the housing 3 so as to pass through the annular seat member 4 arranged around the opening end on the inner side of one of the flow paths R2 and the reference axis L, and the reference A first shaft 5 that is rotatably provided around the axis L and is connected to the valve body 2 so as to be able to transmit a rotational force around the reference axis L, and to the housing 3 from the opposite side of the first shaft 5. A second shaft 6 that is inserted and is rotatable concentrically or substantially concentrically with the first shaft 5 is provided.

  The communication path R1 of the valve body 2 is a through hole that extends straight in a direction orthogonal to the reference axis L. And the outer surface between the both-ends opening of communication path R1 of the outer peripheral surface of the valve body 2 is formed in spherical shape. That is, in a state where the non-penetrating portion of the valve body 2 (between the opening at both ends of the communication passage R1) faces the flow passage R2 of the housing 3, the region facing the seat member 4 around the flow passage R2 is formed in a spherical shape. The In the present embodiment, the outer surface of the valve body 2 around the opening of the communication passage R1 and the outer surface between the both end openings of the communication passage R1 in the circumferential direction around the reference axis L in the valve body 2, When the non-penetrating portion (between the openings at both ends of the communication passage R1) is made to face the flow passage R2 of the housing 3, the region facing the sheet member 4 around the flow passage R2 is formed in a spherical shape.

  As a result, the valve body 2 is in a state in which the communication path R1 communicates with the flow path R2 of the housing 3, and a non-penetrating portion of the valve body 2 (between the openings at both ends of the communication path R1) faces the flow path R2 of the housing 3. In this state, the sheet member 4 is formed so as to be spaced apart from the sheet member 4 by a certain distance.

  And the recessed parts 25 and 20 are provided in the both ends of the valve body 2 in the direction where the reference axis line L is extended. That is, a concave portion (hereinafter referred to as a first shaft insertion portion) 20 for inserting a first end portion, which will be described later, of the first shaft 5 is formed at one end portion of the valve body 2 in the extending direction of the reference axis L. A concave portion (hereinafter referred to as a second shaft insertion portion) 25 for inserting a first end portion of the second shaft 6 to be described later is formed at the other end portion of the valve body 2 in the extending direction of L.

  The first shaft insertion portion 20 is defined by a bottom portion that is orthogonal to the reference axis L, and an inner peripheral surface that rises from the outer periphery of the bottom and is formed around the reference axis L. The inner peripheral surface of the first shaft insertion portion 20 is a pair of first plane portions 20a and 20b that are parallel or substantially parallel to the reference axis L, and a pair of first plane portions 20a formed with the reference axis L interposed therebetween. , 20b and a pair of second plane portions 21a, 21b which are parallel or substantially parallel to the reference axis L and are perpendicular to or substantially perpendicular to the pair of first plane portions 20a, 20b, with the reference axis L sandwiched therebetween It has a pair of 2nd plane parts 21a and 21b formed.

  The second shaft insertion portion 25 is defined by a bottom portion that is orthogonal to the reference axis L and an inner peripheral surface that stands around the outer periphery of the bottom and is formed around the reference axis L. The inner peripheral surface of the second shaft insertion portion 25 has pressed portions 25 a and 25 b that are pressed (biased) by a pressing portion 61 described later of the second shaft 6. In the present embodiment, the inner peripheral surface of the second shaft insertion portion 25 has pressed portions 25a and 25b at two locations. One pressed portion (hereinafter, referred to as a first pressed portion) 25a is configured such that the pressing force by the pressing portion 61 is disposed around the sheet member 4 with the non-penetrating portion of the valve body 2 facing the sheet member 4. It is formed so as to act toward the other flow passage R2 side. The other pressed portion (hereinafter, referred to as a second pressed portion) 25b is configured by a surface facing the first pressed portion 25a, and is pressed in a state where the non-penetrating portion of the valve body 2 faces the sheet member 4. The pressing force by the portion 61 is formed so as to act toward the side opposite to the one flow passage R2 side where the sheet member 4 is disposed around.

  Two flow passages R <b> 2 and R <b> 3 formed in the housing 3 continuously form a row in the valve body housing chamber 30. That is, as described above, since the communication passage R1 of the valve body 2 is formed by a straight hole, the two flow passages R2 and R3 are formed to be substantially concentric with the communication passage R1 of the valve body 2. . The two flow passages R2 and R3 are set to have the same diameter as the inner diameter of the communication passage R1 of the valve body 2.

  Here, the housing 3 will be specifically described. The housing 3 includes a main frame 31 and a sub frame 32 attached to the main frame 31.

  The main frame 31 has a first body portion 310 that defines a part of the valve body housing chamber 30 that houses the valve body 2 and a shaft insertion hole through which the first shaft 5 is inserted (hereinafter referred to as a first shaft insertion hole). A shaft insertion portion (hereinafter referred to as a first shaft insertion portion) 311 in which H1 is formed and a shaft insertion portion (hereinafter referred to as a second shaft insertion hole) H2 in which the second shaft 6 is inserted (referred to as a first shaft insertion portion). (Hereinafter referred to as a second shaft insertion portion) 312 and a cylindrical pipe connection portion 313 that defines the other flow passage R3.

  The first main body 310 has a space in which the valve body 2 can be accommodated in a non-contact state. That is, the first main body 310 is formed with a recess having an opening (not numbered) for inserting the valve body 2 on one side surface. The opening of the first main body 310 is formed in a substantially circular shape with a center line CL orthogonal to the reference axis L passing through the approximate center of the valve body housing chamber 30 (recess). A plurality of screw holes (not shown) are provided around the opening of the first main body 310.

  The first shaft insertion portion 311 is provided continuously at one end portion of the first main body portion 310 in the direction in which the reference axis L extends. The first shaft insertion portion 311 is provided with a first shaft insertion hole H1 penetrating substantially concentrically with the reference axis L. In other words, the first shaft insertion portion 311 communicates between the inside and the outside (the recess (the valve body housing chamber 30) and the outside) of the first body portion 310 so as to be orthogonal to the center line CL of the opening of the first body portion 310. A first shaft insertion hole H1 is provided.

  The first shaft insertion hole H <b> 1 is formed by a stepped hole penetrating the inside and the outside. A cylindrical gasket G is fitted in the first shaft insertion hole H1. The first shaft 5 is inserted through the gasket G. The gasket G is in close contact with the outer peripheral surface of the first shaft 5 and the inner peripheral surface of the first shaft insertion hole H1. Thereby, the sealing performance between the housing 3 and the first shaft 5 is ensured while allowing the rotation of the first shaft 5.

  The second shaft insertion portion 312 is provided continuously to the other end portion of the first main body portion 310 in the direction in which the reference axis L extends. That is, the second shaft insertion portion 312 is provided on the opposite side of the first shaft insertion portion 311 (upper portion of the first main body portion 310) with the valve body accommodating chamber 30 (first main body portion 310) interposed therebetween. The second shaft insertion portion 312 is provided with a second shaft insertion hole H2 penetrating substantially concentrically with the reference axis L. That is, the second shaft insertion portion 312 is concentric with the first shaft insertion hole H1 through the second shaft insertion hole H2 that communicates the inside and outside (the recess (the valve body housing chamber 30) and the outside of the first body portion 310). It is provided as follows.

  The second shaft insertion hole H <b> 2 is configured by a through hole with a step that allows the inside and the outside to communicate with each other. A cylindrical gasket G is fitted in the second shaft insertion hole H2. The second shaft 6 is inserted through the gasket G. The gasket G is in close contact with the outer peripheral surface of the second shaft 6 and the inner peripheral surface of the second shaft insertion hole H2. Thereby, the sealing performance between the housing 3 and the second shaft 6 is secured while allowing the rotation of the second shaft 6.

  As shown in FIG. 2, the second shaft insertion portion 312 includes a fluid supply path 314 that communicates the second shaft insertion hole H2 with the outside. The fluid supply path 314 extends in a direction intersecting the reference axis L. Thereby, the fluid supply path 314 has an internal open end 314a opened in the second shaft insertion hole H2, and an external open end 314b opened outward. A pipe (not shown) connected to a compressor (not shown) is connected to the external open end of the distribution supply path 314.

  Returning to FIG. 1, the pipe connection portion 313 has one end on the first side so that the internal flow passage R3 communicates with the inside of the recess of the first main body portion 310 and is orthogonal to the center line CL reference axis L of the flow passage R3. It is connected to the main body 310. A pipe connection flange 319 for connecting a pipe is provided on the other end side of the pipe connection portion 313.

  The sub-frame 32 is attached to the main frame 31, and has a second main body 320 fixed around an opening on one side surface of the first main body 310, and a tubular pipe connection portion defining one flow passage R2. 321.

  The second main body 320 is connected to the plate-like fixing portion 320a and one surface of the fixing portion 320a (the surface opposite to the surface facing the main frame 31), and the tip from the fixing portion 320a side. And a reduced diameter portion 320b having an outer diameter reduced toward the end. A plurality of through holes (not shown) corresponding to a plurality of screw holes (not shown) formed around the opening of the first main body 310 are formed in the fixing part 320a. Thereby, the main frame 31 and the sub-frame 32 are connected by screwing the bolt inserted into the through hole into the screw hole of the first main body portion 310.

  The pipe connection portion 321 of the subframe 32 is connected at one end to the opening edge portion on the other surface side of the second main body portion 320 (opening edge portion of the reduced diameter portion 320b). A pipe connection flange 322 for connecting pipes is also provided at the other end of the pipe connection part 321 of the subframe 32.

  As a result, the housing 3 is provided with the sub-frame 32 attached to the main frame 31 so that the first main body portion 310 of the main frame 31 and the second main body portion 320 of the sub-frame 32 contain the valve body 2. A body accommodation chamber 30 is formed.

  The sheet member 4 is molded from a soft material that can be elastically deformed, and the material is selected according to the properties of the distribution object (in consideration of heat resistance and chemical resistance). For example, natural rubber, Synthetic rubber (synthetic rubber such as nitrile rubber, silicone rubber, acrylic rubber, styrene butadiene rubber, fluorine rubber, ethylene propylene rubber), tetrafluoroethylene rubber resin, etc.

  The sheet member 4 includes an annular seal portion 40 and a cylindrical extension portion 41 that extends concentrically from the seal portion 40. The seat member 4 is fitted around one flow passage R2 of the housing 3 with the seal portion 40 facing the valve body housing chamber 30 side. The sheet member 4 is provided to be movable in the direction of the center line CL of the flow passage R2.

  Accordingly, the valve device 1 includes an urging unit 7 that urges the seat member 4 toward the valve body accommodating chamber 30 (valve body 2). The urging means 7 is interposed between the housing 3 and the sheet member 4 (sheet portion 40). Various types such as a coil spring and a disc spring can be adopted as the urging means 7, and a disc spring is adopted in this embodiment. The disc spring is formed in an annular shape, and is interposed between the housing 3 and the seat member 4 so that the center thereof is concentric or substantially concentric with the hole center line CL of the flow path R2. Further, as the seat member 4 is movably provided, a seal member (not numbered) is interposed between the seat member 4 and the housing 3. Although not mentioned in the description of the housing 3, in the valve device 1 according to the present embodiment, the piping connection portion 321 of the housing 3 (subframe 32) communicates the space in which the seat member 4 is provided with the outside. A ventilation path 35 is formed. Thereby, the valve device 1 can blow away the fluid object attached to the seat member 4 or the fluid object sandwiched between the seat member 4 and the valve body 2 by supplying fluid to the air passage 35 from the outside. It is like that.

  The first shaft 5 has a first end and a second end opposite to the first end. The first shaft 5 is inserted through the first shaft insertion portion 311 (first shaft insertion hole H1) of the housing 3. Accordingly, the first end portion of the first shaft 5 is disposed inside the housing 3 and in the first shaft insertion portion 20 that is a concave portion of the valve body 2 in the housing 3. The second end is disposed outside the housing 3. A connection portion 50 that is inserted into the first shaft insertion portion 20 of the valve body 2 is provided at the first end portion of the first shaft 5.

  The connecting portion 50 has a prismatic shape, and the protruding strips 51a and 51b that are in contact with the first flat portions 20a and 20b serve as fulcrums when the valve body 2 is tilted on the two opposing surfaces constituting the outer peripheral surface thereof. It is provided along a direction orthogonal to the reference axis L. Further, the remaining two opposing surfaces constituting the outer peripheral surface of the connecting portion 50 are in surface contact with the second flat surface portions 21a and 21b in the first shaft insertion portion 20 of the valve body. Thereby, the rotational torque around the reference axis L can be transmitted to the valve body 2.

  The first shaft 5 can be manually rotated by attaching a handle or the like to the second end, but in the present embodiment, the rotation angle of the first shaft 5 can be arbitrarily set, such as a pulse motor. A drive motor (not shown) is connected to the second end, and is rotated about the reference axis L by being driven by the drive motor. Thereby, the ridges 51a and 51b can transmit rotational torque to the second flat surface portions 21a and 21b. In the present embodiment, the drive motor is connected to the second end of the first shaft 5, and the first shaft 5 rotates around the reference axis L by driving with the drive motor. For example, an air actuator is connected to the second end portion of the first shaft 5, and the first shaft 5 rotates around the reference axis L by driving with the air actuator. Good.

  The second shaft 6 has a first end and a second end opposite to the first end. The second shaft 6 is inserted into the second shaft insertion portion 312 (second shaft insertion hole H <b> 2) of the housing 3. Accordingly, the first end portion of the second shaft 6 is disposed inside the housing 3 and in the second shaft insertion portion 25 that is a recess of the valve body 2 in the housing 3. On the other hand, the second end portion of the second shaft 6 is disposed outside the housing 3. And the press part 61 inserted in the 2nd axis | shaft insertion part 25 of the valve body 2 is formed in the 1st end part of the 2nd axis | shaft 6. As shown in FIG. More specifically, the second shaft 6 is a second shaft main body portion 60 extending in the direction of the reference axis L, the second shaft main body portion 60 having a first end and a second end, and a second shaft main body. And a pressing part 61 provided continuously at the first end of the part 60.

  The pressing part 61 is eccentric with respect to the second shaft main body part 60. That is, the pressing portion 61 partially protrudes radially outward from the outer periphery of the second shaft main body portion 60. Thus, when the second shaft 6 is rotated in one direction around the reference axis L in a state where the non-penetrating portion of the valve body 2 is opposed to the seat member 4, the pressing portion 61 causes the first cover of the valve body 2. The pressing part 25a is pressed. The pressing portion 61 presses the second shaft 6 around the reference axis L in the other direction (the first pressed portion 25a is pressed against the pressing portion 61 with the non-penetrating portion of the valve body 2 facing the seat member 4. The second pressed portion 25b is pressed by rotating in the direction opposite to the rotation direction when the second pressed portion 25b is rotated.

  Similarly to the first shaft 5, the second shaft 6 having the above-described configuration can be manually rotated by attaching a handle or the like to the second end portion. A drive motor (not shown) such as a pulse motor capable of arbitrarily setting the rotation angle is connected to the second end. That is, the non-contact valve device 1 according to the present embodiment uses the pressing portion 61 when the valve body 2 is tilted by rotating the second shaft 6 with a drive motor such as a pulse motor whose rotation angle can be arbitrarily set. The pressing force with respect to the valve body 2 is configured to be a predetermined pressing force. In the present embodiment, the drive motor is connected to the second end of the second shaft 6, and the second shaft 6 rotates around the reference axis L by driving with the drive motor. For example, an air actuator is connected to the second end portion of the second shaft 6, and the second shaft 6 rotates around the reference axis L by driving by the air actuator. Good.

  In the present embodiment, the second shaft 6 includes a fluid path 62 through which fluid flows, as shown in FIGS. The fluid path 62 has a first open end 62a and a second open end 62b opposite to the first open end 62a. The first open end 62 a of the fluid path 62 is open at the first end of the second shaft 6 in the second shaft insertion portion 25. On the other hand, the second open end 62b of the fluid path 62 is configured to be open on the second end side of the second shaft 6 so that fluid can be supplied from the outside.

  More specifically, as shown in FIGS. 2 to 3, the fluid path 62 is formed in the second shaft 6 so as to extend in the direction of the reference axis L of the second shaft 6. The first open end 62 a of the fluid path 62 is open toward the bottom 25 c that forms the second shaft insertion portion 25. Accordingly, the end surface of the second end portion of the second shaft 6 is spaced from the bottom portion 25 c that forms the second shaft insertion portion 25. That is, the second shaft 6 has a gap between the end surface of the second end and the bottom 25c of the second shaft insertion portion 25 so as to allow the fluid flowing out from the first open end 62a of the fluid path 62 to flow. It is arranged in a state of forming.

  The second shaft 6 includes a pair of annular protrusions 63 and 63 that are disposed with a space in the direction of the reference axis L so that a fluid supply path 314 provided in the second shaft insertion portion 312 is interposed. That is, on the outer periphery of the second shaft main body portion 60, a pair of annular projecting portions 63, 63 arranged at intervals in the reference axis L direction are provided. Each of the pair of annular protrusions 63, 63 is formed over the entire outer periphery of the second shaft main body 60 (second shaft 6). The outer circumferences of the pair of annular protrusions 63 and 63 are substantially in close contact with the inner circumferential surface that defines the second shaft insertion hole H2 of the second shaft insertion portion 312. Thus, a space S is formed around the entire circumference of the second shaft 6 (second shaft main body portion 60) and between the pair of annular protrusions 63 of the second shaft 6 so as to face the fluid supply path 314. ing. Accordingly, the second open end 62 b of the fluid path 62 is on the outer peripheral surface of the second shaft 6 in the second shaft insertion portion 312 and is open between the pair of annular protrusions 63 and 63. doing. Further, the inner open end 314 a of the fluid supply path 314 of the housing 3 is also opened between the pair of annular protrusions 63 and 63. Thereby, the fluid supply path 314 of the housing 3 and the fluid path 62 of the second shaft 6 are in fluid communication with each other via the space S between the pair of annular protrusions 63 and 63.

  The non-contact valve device 1 according to the present embodiment has the above-described configuration. Next, the operation of the valve device 1 having the above configuration will be described. In addition, in this embodiment, the case where the non-contact-type valve apparatus 1 is employ | adopted as the line (for example, ash conveyance line of incineration equipment) which conveys a circulation target object is demonstrated, for example.

  The non-contact type valve device 1 is configured to circulate from one flow passage R2 side to the other flow passage R3 side in a state where the two flow passages R2 and R3 communicate with each other via the communication passage R1 of the valve body 2. The distribution target object is distributed. In this state, the two flow passages R2, R3 and the communication passage R1 of the valve body 2 are concentric or substantially concentric, the valve body 2 is not in contact with the seat member 4, and the pressing portion 61 is The valve body 2 is not pressed against either the first pressed portion 25a or the second pressed portion 25b.

  And in order to interrupt | block flow path R2 from the state (open state) which permitted distribution | circulation of the distribution | circulation target object in this way, only the 1st axis | shaft 5 is rotated 90 degrees, maintaining the 2nd axis | shaft 6 as it is. Let If it does so, the rotational force of the 1st axis | shaft 5 will be transmitted to the valve body 2, and the valve body 2 will rotate 90 degrees.

  Thus, when rotating the valve body 2 without rotating the 2nd axis | shaft 6, the press part 61 is a state (it tilts the valve body 2) which neither the 1st pressed part 25a nor the 2nd pressed part 25b presses. The valve body 2 rotates around the reference axis L while being maintained in a non-contact state with respect to the seat member 4. Then, the non-penetrating portion of the valve body 2 faces the one flow passage R2 (the sheet member 4) with a gap therebetween, and the tilting of the valve body 2 is allowed.

  Thereafter, when the second shaft 6 is rotated, the pressing portion 61 presses the first pressed portion 25a (the upper side of the valve body 2) to urge the valve body 2 toward the seat member 4, and by the urging. The valve body 2 tilts toward the seat member 4 with the tip end of the first shaft 5 (support point supporting the valve body 2) as a tilting fulcrum, and the non-penetrating portion of the valve body 2 is in pressure contact with the seal portion 40. As a result, the sealing performance between the valve body 2 and the seat member 4 is enhanced, so that the space between the valve body 2 and the housing 3 is sealed in a liquid-tight or air-tight manner. Therefore, one flow path R2 (between the two flow paths R2 and R3) is blocked, and the flow of the flow target is stopped.

  And in order to switch from this state to the state (open state) which distribute | circulates a distribution | circulation target object, first, the 2nd axis | shaft 6 is reversely rotated, and the contact of the press part 61 with respect to the 1st to-be-pressed part 25a is cancelled | released. The second pressed portion 25b is pressed by the pressing portion 61. If it does so, the valve body 2 will tilt in the direction away from the sheet | seat member 4 (seal part 40) by the press effect | action of the press part 61 with respect to the 2nd to-be-pressed part 25b. As a result, as the valve body 2 returns to the original position, the non-penetrating portion of the valve body 2 and the seal portion 40 return to a state of facing each other in a non-contact manner.

  And if the 1st axis | shaft 5 is reversely rotated without rotating the 2nd axis | shaft 6, the valve body 2 will rotate in a non-contact state with respect to the sheet | seat member 4, and two flow path R2, R3 will become the valve body 2 The communication path R1 communicates to return to a state (open state) in which the flow of the flow object is permitted. In this manner, the valve body 2 is rotated or reversely rotated in a non-contact state with respect to the seat member 4 by rotation or reverse rotation of the first shaft 5, and the valve is rotated or reversely rotated by the second shaft 6 The opening and closing of the valve body is switched by tilting the body 2 so as to be in contact with and away from the seat member 4 (seal part 40).

  Also in the valve device 1 according to the present embodiment, as described above, when the flow path is opened, the valve body 2 is spaced from the housing 3 and the seat member 4. For this reason, the flow object passing through the flow path flows between the valve body 2 and the housing 3 and enters the second shaft insertion portion 25 provided in the valve body 2.

  However, in the valve device 1 according to the present embodiment, fluid is supplied from the outside to the second open end 62b of the fluid path 62 via the fluid supply path 314 formed in the second shaft insertion portion 312 of the housing 3. Thus, the flow target that has entered the second shaft insertion portion 25 of the valve body 2 is blown out from the second shaft insertion portion 25 to the outside by the fluid flowing out from the first open end 62a of the fluid path 62 (second shaft). Can be excluded from the insertion portion 25).

  Thereby, a flow target object is compacted in the 2nd axis insertion part 25 of the valve body 2, or the inner peripheral surface (1st pressed part 25a, the 2nd axis insertion part 25 of the press part 61 or the valve body 2). The pressing portion 61 (second shaft 6) is not rotated in a state where the flow object is interposed between the second pressed portion 25b).

  Therefore, the valve device 1 having the above configuration includes the second shaft 6 (pressing portion 61) and the valve body 2 (the inner peripheral surface of the second shaft insertion portion 25 (first pressed portion 25a, second pressed portion 25b)). Can be prevented, and smoothness of rotation of the pressing portion 61 (second shaft 6) in the second shaft insertion portion 25 can be ensured. Accordingly, the valve body 2 can be tilted toward the seat member 4 by a necessary amount by rotation of the second shaft 6 around the reference axis L (pressing of the inner peripheral surface of the second shaft insertion portion 25 by the pressing portion 61). The sealing performance between the valve body 2 and the housing 3 can be ensured over a long period of time.

  Further, in the valve device 1 of the present embodiment, the fluid supply path 314 of the second shaft insertion portion 312 communicates with the fluid path 62 via the space S formed between the pair of annular protrusions 63 and 63. Therefore, even if the second shaft 6 is rotated around the reference axis L (the valve body 2 is rotated), the fluid supply path 314 and the fluid path 62 communicate with each other. This eliminates the need to align the fluid supply path and the second open end 62b of the fluid path when supplying the fluid from the outside. Therefore, it is possible to more efficiently exclude (blow away) the flow target object that has entered the second shaft insertion portion 25 of the valve body 2 even when the flow path is blocked or the flow target object is flown. it can. Further, even when the second shaft 6 rotates around the reference axis L, the fluid can be blown out to the second shaft insertion portion 25, so that the circulation object in the second shaft insertion portion 25 can be efficiently used. Can be blown away.

  Therefore, according to the valve device according to the present embodiment, even if the valve body 2 is used to open and close the flow path through which the flow target is circulated, the valve body 2 does not cause a tilt failure, and the sealing performance can be ensured over a long period of time. Such an excellent effect can be achieved.

  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 flow path R2 and the communication path R1 are formed to have the same diameter or substantially the same diameter, but the present invention is not limited to this. For example, one flow path R2 has a larger diameter than the communication path R1. It may be set to. In contrast, the communication path R1 may be set to have a larger diameter than the one flow path R2.

  Further, either one of the flow passages R2 and R3 may be set to have a larger diameter than the other, and the communication passage R1 of the valve body 2 may be configured with a tapered hole to absorb the difference in diameter.

  In the above embodiment, a disc spring is employed as the biasing means 7 that biases the sheet member 4. However, the present invention is not limited to this. For example, a plurality of coil springs are used as the biasing means 7 in the circumferential direction of the sheet member 4. You may make it arrange | position to. Even in this case, the same effect as when a disc spring is employed as the biasing means 7 can be obtained.

  In the above embodiment, the two-way valve has been described. However, the present invention is not limited to this. For example, three flow passages are formed in the housing 3 around the reference axis L at every predetermined angle, and A communication passage communicating with two of the three flow passages and a non-penetrating portion facing the remaining flow passages are formed, and the flow communicates via the communication passage R1 by rotating the valve body 2 forward and backward. It may be a three-way valve that switches the road.

  In the above embodiment, the pair of annular protrusions 63 are provided in pairs (two) with a gap in the axial direction of the second shaft 6, but the present invention is not limited to this. More than one may be provided. Even in this case, the second open end 62b of the fluid path 62 is opened between the annular protrusions 63 and 63, and the fluid supply path 314 is disposed so as to correspond to the space S between the annular protrusions 63. Similarly to the above embodiment, when supplying the fluid from the outside, the fluid supplied from the outside is positioned in the second shaft insertion portion 25 without aligning the fluid supply path and the second open end 62b of the fluid path. Can be supplied.

  In the above embodiment, the bottom portion of the second shaft insertion portion 25 is formed in a planar shape, and the first open end 62a of the fluid path 62 is opposed to the bottom portion on the plane. However, the present invention is not limited to this. For example, as shown in FIG. 4, a convex portion 26 that protrudes toward the first open end 62 a of the fluid path 62 may be provided at the bottom in the second shaft insertion portion 25 as a concave portion. In this way, the fluid flowing out from the opening at one open end of the fluid path 62 is guided by the convex portion 26 and diffused into the second shaft insertion portion 25, so that the fluid in the second shaft insertion portion 25 of the valve body 2 is diffused. It is possible to blow away the distribution object that has entered into a wider range. In this case, it is preferable that the convex part 26 is made into the form (for example, cone shape and pyramid shape) which tapered toward the 2nd axis | shaft 6 side. If it does in this way, the fluid discharge | released from the 1st open part of the fluid path | route 62 can be efficiently diffused in the 2nd axis | shaft insertion part 25, and the distribution | circulation target object which entered in the 2nd axis | shaft insertion part 25 Can be efficiently eliminated.

  In the said embodiment, although the 1st open part of the fluid path | route 62 was open | released in one place on the end surface of the 1st one end part of the 2nd axis | shaft 6, it is not limited to this. For example, as shown in FIG. 5, the first open end 62 a of the fluid path 62 may be opened at a plurality of locations on the first end portion of the second shaft 6 in the second shaft insertion portion 25. That is, the fluid path 62 may be formed so as to be branched in the second shaft 6, and the first open end 62 a may be provided at a plurality of locations on the outer surface of the first end portion. If it does in this way, the fluid from the outside will flow out from a plurality of places of the 1st end part of the 2nd axis 6 in the 2nd axis insertion part 25 of valve body 2, and the wide range in the 2nd axis insertion part 25 The fluid can be sprayed on. Accordingly, it is possible to reliably blow away and eliminate the flow target in the second shaft insertion portion 25 (flow target attached to the inner surface of the pressing portion 61 and the second shaft insertion portion 25).

  In the above embodiment, the fluid supply path 314 and the fluid path 62 are fluidly connected via the space S between the pair of annular protrusions 63 provided on the outer periphery of the second shaft 6 (second shaft main body portion 60). Although configured to communicate, the present invention is not limited to this. For example, the second open end 62b of the fluid path 62 may be opened on the end surface of the second end of the second shaft 6, and fluid from the outside may be directly supplied to the second open end 62b. .

  In the above embodiment, the second shaft 6 is provided with a pair of annular protrusions 63, 63, and the fluid path 62 and the fluid supply path 314 are communicated with each other via the space S between the pair of annular protrusions 63, 63. However, the present invention is not limited to this. For example, the fluid supply path 314 is provided in the second shaft insertion portion 312 on the assumption that the outer periphery of the second shaft 6 (second shaft main body portion 60) is in close contact with the inner peripheral surface that defines the second shaft insertion hole H2. The second open end 62b of the fluid path 62 may be opened at one place on the outer peripheral surface of the second shaft 6 (second shaft main body portion 60) so as to be able to communicate with the fluid supply path 314. . In this case, the fluid from the outside can be supplied to the fluid path 62 by rotating the second shaft 6 so that the fluid supply path 314 and the second open end 62 b of the fluid path 62 overlap (match). . However, in this case, when supplying the fluid from the outside, it is necessary to align the arrangement of the fluid supply path 314 and the arrangement of the opening on the other end side of the fluid path 62. Needless to say, it is preferable to adopt this.

  Although not particularly mentioned in the above embodiment, the fluid sprayed into the second shaft insertion portion 25 may be a liquid such as water or oil in addition to a solvent, for example, a gas such as air, gas, or steam. Good. In this way, if the solvent is supplied, not only can the flow object that has entered the second shaft insertion portion 25 be skipped and removed, but also the inner peripheral surface of the pressing portion 61 and the second shaft insertion portion 25 can be cleaned. It can be performed.

  In the above embodiment, the flow target is excluded from the second shaft insertion portion 25 only by spraying the fluid into the second shaft insertion portion 25, but the present invention is not limited to this. For example, in addition to the above configuration, a vibrator for vibrating the valve body 2 and the second shaft 6 may be provided. In this way, the valve body 2 and the second shaft 6 are vibrated by the vibrator, and the flow target (ash) attached to the inner peripheral surface of the pressing portion 61 and the second shaft insertion portion 25 is shaken off. Thus, the flow object in the second shaft insertion portion 25 can be eliminated by the fluid supplied from the outside.

  In the above embodiment, the fluid path 62 is provided only on the second shaft 6, but the present invention is not limited to this, and for example, a similar fluid path may be provided on the first shaft 5.

  Although not specifically mentioned in the above embodiment, the valve device 1 can be employed in a flow channel that uses a solid (particularly, powder) as a circulation object in addition to a gas or a liquid. In addition, it can be used for a flow channel having a high hardness and high wear property, a highly corrosive material, or a highly adhesive material as a distribution object. In this case, the fluid supply path 314 is supplied with a fluid (solvent, detergent, etc.) suitable for removing the circulation object or a mixture of a fluid (gas or liquid) suitable for removal of the circulation object and another fluid (gas or liquid). May be.

  DESCRIPTION OF SYMBOLS 1 ... Valve apparatus (non-contact type valve apparatus), 2 ... Valve body, 3 ... Housing, 4 ... Seat member, 5 ... 1st axis | shaft, 6 ... 2nd axis | shaft, 7 ... Energizing means, 20 ... 1st axis | shaft insertion Part (concave part), 20a, 20b ... first flat part, 21a, 21b ... second flat part, 25 ... second shaft insertion part (concave part), 25a ... first pressed part (pressed part), 25b ... first Two pressed parts (pressed parts), 26 ... convex part, 30 ... valve body accommodating chamber, 31 ... main frame, 32 ... subframe, 35 ... vent path, 40 ... seal part, 41 ... extension part, 50 ... Connection part, 51a, 51b ... ridge, 60 ... second shaft main body part, 61 ... pressing part, 62 ... fluid path, 62a ... first open end, 62b ... second open end, 63 ... annular projecting part, 310 ... 1st main-body part, 311 ... 1st axis insertion part (axis insertion part), 312 ... 2nd axis insertion part (axis insertion part), 313 ... Pipe connection part, DESCRIPTION OF SYMBOLS 14 ... Fluid supply path, 314a ... Internal open end, 314b ... External open end, 319 ... Flange for pipe connection, 320 ... Second body part, 320a ... Fixed part, 320b ... Reduced diameter part, 321 ... Pipe connection part, 322 ... Pipe connection flange, CL ... Center line, G ... Gasket, H1 ... First shaft insertion hole (shaft insertion hole), H2 ... Second shaft insertion hole (shaft insertion hole), L ... Axis line, R ... Communication passage, R1: Communication path, R2, R3: Flow path, S: Space

Claims (4)

A valve body is provided which is provided so as to be rotatable around a predetermined axis and has a communication passage penetrating orthogonally or substantially orthogonally to the predetermined axis, and a valve body housing chamber in which the valve body is housed. And a housing in which at least two flow passages communicating with each other via the communication passage of the valve body in the valve body housing chamber are formed, and an interior of at least one of the two flow passages An annular seat member disposed around the opening end on the side, and is inserted into the housing so as to pass on the predetermined axis, and is rotatably provided around the predetermined axis. A first shaft connected to be able to transmit a rotational force around a predetermined axis, and a second shaft that is inserted into the housing from the opposite side of the first shaft and is concentrically or substantially concentric with the first shaft. And the valve body includes A concave portion disposed on an outer surface through which the predetermined axis passes, wherein the second shaft is a first end portion disposed in the housing and is disposed in the concave portion of the valve body; One end and a second end opposite to the first end, and a second end disposed outside the housing, the first end of the second shaft A pressing portion capable of pressing the inner peripheral surface of the recess is provided in a state where the non-penetrating portion of the valve body faces the seat member, and the valve is pressed by the pressing of the inner peripheral surface of the recess by the pressing portion. In the non-contact type valve device configured to bring a body into and out of contact with the seat member, the second shaft includes a fluid path through which a fluid flows, and the fluid path includes a first open end and a second open end. has the door, said first open end is open at the first end of said second shaft, said second open end, said second shaft Non-contact type valve apparatus characterized by being configured to supply the fluid from the outside open at the second end portion side.   The housing has a shaft insertion portion formed with a shaft insertion hole through which the second shaft is inserted, an inner open end that passes through the shaft insertion portion and opens toward the shaft insertion hole, and opens to the outside. A fluid supply path having an external open end, wherein the fluid supply path is configured to be able to supply fluid from the external open end, and a portion in the shaft insertion portion of the second shaft includes the fluid supply path. The second open end and the internal open end are provided with at least two annular protrusions that are arranged at predetermined intervals in the axial direction, each protruding radially outward from the entire outer periphery of the second shaft. The non-contact valve device according to claim 1, wherein an opening is provided between the annular protrusions adjacent in the predetermined axial direction.   The concave portion has a bottom portion facing the second shaft, the first open end of the fluid path opens toward the bottom portion, and the bottom portion has an opening on one end side of the fluid path. The non-contact type valve device according to claim 1, wherein a convex portion protruding toward the surface is formed. The non-contact type valve device according to any one of claims 1 to 3, wherein the first open end of the fluid path is opened at a plurality of locations of the first end portion of the second shaft.

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