JP5296743B2 - Pneumatic operation mechanism and pneumatic operation valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pneumatic type operating mechanism composable with different operating directions with respect to a valve element in a valve mechanism by simple work without requiring spare parts accompanying change of a circulation circuit. <P>SOLUTION: The pneumatic type operating mechanism 2 is equipped with an operating means 20 internally provided with an operating member 200, an energizing means 30 for energizing the operating member, and a connecting means 40 for connecting the valve mechanism 1 carrying out circulation control of a fluid and the operating means. The energizing means is composed of a coil spring, and the connecting means is equipped with a cylindrical housing 410 inserted with a shaft body 400, a pair of screw members 412a, 412b rotatably attached to both ends of the housing and composed so they can be screwed in externally fit states onto either one of a cylindrical valve mechanism side connecting part 13 provided on the valve mechanism and a cylindrical actuator side connecting part 206 provided on a casing of the operating means, a first spring receiver 420 fixed to a one end side of a housing interior, and a second spring receiver 430 fixed to a one end side of the shaft body positioned in another end side of the housing. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a pneumatic operating mechanism that operates a valve mechanism that controls flow of fluid by supplying and exhausting compressed air, and a pneumatic operating valve.

  Conventionally, as an operating mechanism that operates a valve mechanism that controls flow of fluid such as flow rate and pressure, an operating body that can move in a predetermined axial direction, and a casing that forms a space in which the operating body is housed, Actuating means provided so that the operating body bisects the space in the axial direction, biasing means for biasing the operating body in any one of the axial directions, a valve mechanism and operating means for controlling fluid flow There is known a pneumatic operation mechanism including a connecting means for connecting the two.

  Such a pneumatic operating mechanism includes a shaft body that connects the valve body of the valve mechanism and the operating body so that the connecting means is movable in the axial direction. In this type of pneumatic operating mechanism, a coil spring is employed as the urging means, and the coil spring is incorporated in the activating means so as to directly urge the operating body, or the operating body via the shaft body. There is one in which the coil spring is built in the connecting means so as to indirectly urge the shaft, but in any case, by supplying compressed air to any one of the spaces in the casing divided by the operating body, the shaft body By moving the valve body connected to the operating body via the valve in any axial direction (the direction opposite to the biasing direction of the coil spring) while exhausting compressed air from the operating means (space) The valve body and the actuating body are moved in any one of the axial directions by urging by a coil spring and returned to the original position (for example, see Patent Document 1).

  By the way, the pneumatic operating mechanism having the above configuration moves the operating body and the valve body in one axial direction by supplying compressed air, and moves the operating body and the valve body in the other axial direction by urging by a coil spring. Contrary to this, for example, one that opens the flow path in the valve mechanism by supplying compressed air and closes the flow path in the valve mechanism by energizing a coil spring. And the valve body is moved in the other axial direction, and is moved to one side in the axial direction of the actuating body and the valve body by biasing of the coil spring (for example, while the flow path in the valve mechanism is opened by biasing of the coil spring) However, since the urging direction of the coil spring is exactly opposite, the pneumatic operating mechanism itself corresponds to the operating mode of the valve mechanism. When it is considered as a dedicated product, or how to bias the coil spring There parts spring receptacle such as to receive a shaft or a spring so that the opposite directions (only part) it may recombination can configured.

JP-A-5-39879

  However, as described above, in order to reverse the biasing direction of the coil spring, the pneumatic operating mechanism itself is a dedicated part, or each part (shaft body, spring receiver, etc.) is a dedicated part that can be recombined. Then, there is a problem that the operation mode of the valve mechanism cannot be changed unless the pneumatic operation mechanism itself or a dedicated part is owned as a spare part. In addition, if the dedicated parts (shaft body, spring receiver, etc.) are recombined to reverse the biasing direction of the coil spring, it is necessary to disassemble and reassemble a plurality of parts constituting the operating means and the connecting means. There is also a problem that the operation of changing the operation mode of the valve mechanism becomes very complicated.

  SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a pneumatic operating mechanism and a pneumatic operating valve that do not require spare parts such as dedicated parts and that can change the operating mode of the valve mechanism with a simple operation. And

  A pneumatic operating mechanism according to the present invention includes an operating body movable in a predetermined axial direction, and a casing in which a space for housing the operating body is formed, and the operating body bisects the space in the axial direction. An actuating means provided; an urging means for urging the actuating body in any one of the axial directions; and a linking means for linking a valve mechanism for controlling the flow of fluid and the activating means. The means includes a shaft body configured to be movable in the axial direction and connecting the valve body of the valve mechanism and the operating body, and supplying compressed air to one of the spaces divided into the operating body. While the operating body moves in any other direction in the axial direction, the operating body moves in any one direction in the axial direction by urging by the urging means by exhausting the compressed air in the space. Pneumatic actuation mechanism configured to return to the position The urging means is constituted by a coil spring, and the connecting means is rotatable about a cylindrical housing in which the shaft body is inserted, and both ends of the housing about the axis as a rotation center. A cylindrical valve mechanism side connecting portion provided in the valve mechanism and a cylindrical actuator side connecting portion provided in the casing of the operating means can be screwed in an externally fitted state. A pair of screw members; a first spring receiver fixed to one end inside the housing and receiving one end of the coil spring; and a coil spring fixed to one end of the shaft located on the other end of the housing A second spring receiver that receives the other end of the shaft, and the shaft body is configured such that both ends thereof can be connected to either the operating body or the valve body, and the housing is configured such that both ends of the shaft body are the operating body and In a state connected to the valve body, Each pair of the screw member, characterized in that the end portions are screwed on the valve mechanism side connection portion and the actuator-side connecting portion is configured to be coupled to the valve mechanism and the casing. Here, any one direction of the axial direction is a direction in which the axis extends, and means either one of the directions or the other direction, and any one of the axial directions means the axis. It is a direction in which the one direction extends, and one direction of the direction or the other direction of the other direction, that is, a direction opposite to the one direction.

  According to the pneumatic operating mechanism having the above-described configuration, the biasing unit is configured by a coil spring, and the connecting unit includes a cylindrical housing in which the shaft body is inserted, and both ends of the housing. Attached to the cylindrical valve mechanism side connecting portion provided in the valve mechanism and the cylindrical actuator side connecting portion provided in the casing of the operating means. A pair of screw members configured to be able to be screwed together in a state; a first spring receiver fixed to one end of the housing and receiving one end of the coil spring; and the shaft positioned on the other end of the housing And a second spring receiver that receives the other end of the coil spring.The shaft body is configured such that both ends can be connected to either the operating body or the valve body, and the housing Both ends of the shaft actuate In addition, each of the pair of screw members is screwed into the valve mechanism side connecting portion and the actuator side connecting portion while being connected to the valve body, and both ends are connected to the valve mechanism and the casing. The one end side of the housing is connected to the casing and the other end side of the shaft body is directly or indirectly connected to the operating body, while the other end side of the housing is connected to the valve mechanism and the one end side of the shaft body is connected to the valve. By directly or indirectly connecting to the valve body of the mechanism, the biasing force of the coil spring interposed between the first spring receiver and the second spring receiver causes the second spring receiver to move toward the valve mechanism. As a result of acting to push, in a normal state, the shaft body to which the second spring receiver is fixed is displaced in one direction in the axial direction (valve mechanism side), and the valve body connected to the shaft body and The operating body is displaced in the same direction.

  Then, the space in the casing (one of the bisected spaces) is set so that the pressure of the compressed air causes a pressing action in the other direction in the axial direction with respect to the operating body (the direction opposite to the biasing direction by the coil spring). When compressed air is supplied to the space, the operating body is pushed and displaced in the other direction in the axial direction against the urging force of the coil spring by the pressure of the compressed air, so that it operates via the shaft body. The valve body connected to the body is also displaced in the same direction as the shaft body. When compressed air is exhausted from the space (operating means) in the casing from this state, the operating body is released from the pressure of the compressed air. As a result, the operating body and the valve body are directed in one axial direction by the biasing force of the coil spring. (The valve mechanism side) and return (return) to the original position.

  Then, the connecting means is removed from the valve body and the operating means, and the other end side of the housing is connected to the casing and one end side of the shaft body is connected to the operating body, while one end side of the housing is connected to the valve mechanism and the shaft body. The other end side is directly or indirectly connected to the valve body of the valve mechanism. Even in this case, the urging force of the coil spring interposed between the first spring receiver and the second spring receiver acts, but the first spring receiver fixed to the housing is located on the valve mechanism side. On the other hand, since the second spring receiver fixed to the shaft body movable in the axial direction is located on the operating means side, the second spring receiver is pushed to the operating means side by the biasing force of the coil spring. The shaft body to which the second spring receiver is fixed is displaced in the other direction in the axial direction (the operating means side: the opposite side to the valve mechanism), and the valve body and the operating body connected to the shaft body Are displaced in the same direction.

  And the space in the casing (the other of the bisected spaces) so that the pressure of the compressed air causes a pressing action in one axial direction (the direction opposite to the biasing direction by the coil spring) with respect to the operating body. When the compressed air is supplied to the space), the operating body is displaced toward the axial direction (valve mechanism side) against the biasing force of the coil spring by the pressure of the compressed air, The valve body connected to the operating body via the shaft body is also displaced in the same direction as the shaft body. When compressed air is exhausted from the space (operating means) in the casing from this state, the operating body is released from the pressure of the compressed air. As a result, the operating body and the valve body are directed in the other axial direction by the biasing force of the coil spring. (The side opposite to the valve mechanism side) is displaced to return (return) to the original position.

  Therefore, according to the pneumatic operating mechanism according to the present invention, the operating mode of the valve mechanism differs only by connecting the operating means and the valve mechanism with the connecting means so as to invert the single connecting means by 180 °. It can be made into an aspect.

  A pneumatic operating valve according to the present invention includes a valve mechanism that controls flow of fluid and a pneumatic operating mechanism that operates the valve mechanism by supplying compressed air, and the pneumatic operating mechanism is arranged in a predetermined axial direction. An actuating means having a movable actuating body, and a casing forming a space in which the actuating body is housed, wherein the actuating body bisects the space in the axial direction; and any one of the axial directions An urging means for urging the operating body, a valve mechanism for controlling the flow of fluid, and a connecting means for connecting the operating means, wherein the connecting means is configured to be movable in the axial direction, and the valve mechanism The valve body and the operating body are connected to each other, and the operating body moves in any one of the axial directions by supplying compressed air to one of the spaces divided into the operating body. , By evacuating the compressed air in the space The pneumatic operating valve is configured so that the operating body moves in any one of the axial directions and returns to the original position by the biasing by the biasing means, wherein the biasing means is configured by a coil spring, The connecting means includes a cylindrical housing in which the shaft body is inserted, and a cylindrical valve mechanism provided in the valve mechanism, which is rotatably attached to both ends of the housing around the axis line as a rotation center. A pair of screw members configured to be able to be screwed in an externally fitted state to both of the side connecting portion and the cylindrical actuator side connecting portion provided in the casing of the operating means, and fixed to one end inside the housing A first spring receiver that receives one end of the coil spring, and a second spring receiver that is fixed to one end of the shaft located on the other end of the housing and receives the other end of the coil spring. The shaft body is made at both ends. The housing is configured to be connectable to any of the body and the valve body, and the housing is configured such that both ends of the shaft body are coupled to the operating body and the valve body, and each of the pair of screw members includes the valve mechanism side coupling portion and the actuator. It is configured to be screwed into the side connecting portion so that both end portions are connected to the valve mechanism and the casing. Here, any one direction of the axial direction is a direction in which the axis extends, and means either one of the directions or the other direction, and any one of the axial directions means the axis. It is a direction in which the one direction extends, and one direction of the direction or the other direction of the other direction, that is, a direction opposite to the one direction.

  According to the pneumatic operating valve having the above-described configuration, the urging means is constituted by a coil spring, and the connecting means is a cylindrical housing in which the shaft body is inserted, and the both ends of the housing with respect to the cylindrical housing. Attached to the cylindrical valve mechanism side connecting portion provided in the valve mechanism and the cylindrical actuator side connecting portion provided in the casing of the operating means. A pair of screw members configured to be able to be screwed together in a state; a first spring receiver fixed to one end of the housing and receiving one end of the coil spring; and the shaft positioned on the other end of the housing And a second spring receiver that receives the other end of the coil spring.The shaft body is configured such that both ends can be connected to either the operating body or the valve body, and the housing Both ends of the shaft body are actuating bodies In the state of being connected to the valve body, each of the pair of screw members is screwed into the valve mechanism side connecting portion and the actuator side connecting portion, and both ends are connected to the valve mechanism and the casing. The one end side of the housing is connected to the casing and the other end side of the shaft body is directly or indirectly connected to the operating body, while the other end side of the housing is connected to the valve mechanism and the one end side of the shaft body is connected to the valve. By directly or indirectly connecting to the valve body of the mechanism, the biasing force of the coil spring interposed between the first spring receiver and the second spring receiver causes the second spring receiver to move toward the valve mechanism. As a result of acting to push, in a normal state, the shaft body to which the second spring receiver is fixed is displaced in one direction in the axial direction (valve mechanism side), and the valve body connected to the shaft body and The operating body is displaced in the same direction.

  Then, the space in the casing (one of the bisected spaces) is set so that the pressure of the compressed air causes a pressing action in the other direction in the axial direction with respect to the operating body (the direction opposite to the biasing direction by the coil spring). When compressed air is supplied to the space, the operating body is pushed and displaced in the other direction in the axial direction against the urging force of the coil spring by the pressure of the compressed air, so that it operates via the shaft body. The valve body connected to the body is also displaced in the same direction as the shaft body. When compressed air is exhausted from the space (operating means) in the casing from this state, the operating body is released from the pressure of the compressed air. As a result, the operating body and the valve body are directed in one axial direction by the biasing force of the coil spring. (The valve mechanism side) and return (return) to the original position.

  Then, the connecting means is removed from the valve body and the operating means, and the other end side of the housing is connected to the casing and one end side of the shaft body is connected to the operating body, while one end side of the housing is connected to the valve mechanism and the shaft body. The other end side is directly or indirectly connected to the valve body of the valve mechanism. Even in this case, the urging force of the coil spring interposed between the first spring receiver and the second spring receiver acts, but the first spring receiver fixed to the housing is located on the valve mechanism side. On the other hand, since the second spring receiver fixed to the shaft body movable in the axial direction is located on the operating means side, the second spring receiver is pushed to the operating means side by the biasing force of the coil spring. The shaft body to which the second spring receiver is fixed is displaced in the other direction in the axial direction (the operating means side: the opposite side to the valve mechanism), and the valve body and the operating body connected to the shaft body Are displaced in the same direction.

  And the space in the casing (the other of the bisected spaces) so that the pressure of the compressed air causes a pressing action in one axial direction (the direction opposite to the biasing direction by the coil spring) with respect to the operating body. When the compressed air is supplied to the space), the operating body is displaced toward the axial direction (valve mechanism side) against the biasing force of the coil spring by the pressure of the compressed air, The valve body connected to the operating body via the shaft body is also displaced in the same direction as the shaft body. When compressed air is exhausted from the space (operating means) in the casing from this state, the operating body is released from the pressure of the compressed air. As a result, the operating body and the valve body are directed in the other axial direction by the biasing force of the coil spring. (The side opposite to the valve mechanism side) is displaced to return (return) to the original position.

  Therefore, according to the pneumatically operated valve according to the present invention, the operating mechanism of the valve mechanism differs only by connecting the operating means and the valve mechanism with the connecting means so as to invert the single connecting means by 180 °. It can be made into an aspect.

  As described above, according to the pneumatic operating mechanism and the pneumatic operating valve according to the present invention, it is possible to change the operation mode of the valve mechanism with a simple operation without requiring spare parts such as dedicated parts. An excellent effect can be achieved.

1 shows an overall front view of a pneumatically operated valve (actuating mechanism) according to an embodiment of the present invention. It is a longitudinal cross-sectional view of the pneumatic operating valve (operating mechanism) according to the same embodiment, and (a) connects one end side of the connecting means to the operating means and connects the other end side of the connecting means to the valve mechanism side. (B) shows a state in which one end side of the connecting means is connected to the valve mechanism and the other end side of the connecting means is connected to the actuating means side (the connecting means is inverted from the state of (a)). State)). FIG. 2 is an operation explanatory diagram when the connecting means of the pneumatic operation valve (operation mechanism) according to the same embodiment is set as the attachment mode of FIG. 2A, (a) shows a state in which compressed air is supplied; (B) shows the state which compressed air was exhausted. FIG. 2 is an operation explanatory diagram when the connecting means of the pneumatic operation valve (operation mechanism) according to the same embodiment is set as the attachment mode of FIG. 2B, wherein (a) shows a state in which compressed air is supplied; (B) shows the state which compressed air was exhausted. The coil spring is removed from the pneumatic actuation valve (actuation mechanism) according to the embodiment, and (a) shows a state in which one end side (first spring receiver) of the coupling means is arranged on the actuation means side. , (B) shows a state in which one end side (first spring receiver) of the connecting means is arranged on the valve mechanism side. FIG. 6 is an operation explanatory view when the connecting means of the pneumatic operation valve (operation mechanism) according to the embodiment is set to the attachment mode of FIG. 5 (a), and (a) shows compressed air on the first casing member side. The state which supplied is shown, (b) shows the state which supplied compressed air to the 2nd casing member side. FIG. 5B is an operation explanatory diagram when the connecting means of the pneumatic operating valve (operating mechanism) according to the same embodiment is installed in FIG. 5B, and (a) shows compressed air on the first casing member side. The state which supplied is shown, (b) shows the state which supplied compressed air to the 2nd casing member side.

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

  As shown in FIG. 1, FIG. 2 (a) and FIG. 2 (b), the pneumatic operating valve according to the present embodiment includes the valve mechanism 1 for controlling the flow of fluid, the supply of compressed air, and the exhaust. A pneumatic operating mechanism (hereinafter simply referred to as an operating mechanism) 2 for operating the valve mechanism 1 is provided.

  The valve mechanism 1 can employ various types such as a control valve that adjusts the flow rate of fluid and a pressure adjustment valve that adjusts the pressure of fluid. A valve body 10 provided so as to be reciprocally movable or displaceable in an axial direction) and a valve mechanism body 11 in which the valve body 10 is accommodated are employed. The valve mechanism main body 11 is configured to be able to connect upstream and downstream pipes (not numbered), and an internal space in which the valve body 10 is accommodated (a space that allows movement of the valve body 10). Both pipes are in communication with each other. The valve body 10 functions to open and close the fluid flow path and open and close the escape path for releasing the pressure. The mode varies depending on the application and type of the valve mechanism 1. A gate valve, a needle valve, or the like is employed as one that moves in the direction, and a diaphragm or the like is employed as one that deforms in the axial direction. FIG. 2 shows a valve body 10 of a type that opens and closes a flow path by reciprocating in the axial direction.

  The valve body 10 is connected to an operating shaft 12 penetrating the valve mechanism main body 11. The operating shaft 12 is provided such that its axis extends in parallel to the axial direction, and is provided so as to be movable in the axial direction. Further, a screw portion (in this embodiment, a male screw) for connecting a shaft body 400 of a connecting means 40 (described later) of the operating mechanism 2 to the end portion of the operating shaft 12 protruding outward from the valve mechanism main body 11. N1 is formed. Thereby, the valve body 10 can be moved or deformed in the same direction as the shaft body 400 moves in the axial direction. In the valve mechanism 1, a seal member S is interposed between the operating shaft 12 and the valve mechanism main body 11 so as to prevent fluid leakage while allowing the operating shaft 12 to move.

  The valve mechanism body 11 is provided with a connecting portion (hereinafter referred to as a valve mechanism side connecting portion) 13 for connecting the connecting means 40. The valve mechanism side connecting portion 13 is provided so as to surround the operating shaft 12 penetrating the valve mechanism main body 11. In the present embodiment, the valve mechanism side connecting portion 13 is formed in a cylindrical shape so as to protrude outward from the valve mechanism body 11 substantially concentrically with the operating shaft 12 (a hole through which the operating shaft 12 is inserted). A screw groove for screwing screw members 412a and 412b, which will be described later, is provided on the outer periphery.

  Further, in the present embodiment, a positioning portion 14 for positioning the connecting means 40 with respect to the valve mechanism 1 (valve mechanism main body 11) is provided in the tubular valve mechanism side connecting portion 13 having a cylindrical shape. It has been. The positioning portion 14 is connected to the inner peripheral surface of the valve mechanism side coupling portion 13 and has a substantially disk shape, and a hole (not numbered) in which the operating shaft 12 is loosely inserted is formed in the center portion. It is installed. The positioning portion 14 has a positioning surface (hereinafter referred to as a first positioning surface 14 ') for positioning the housing 410 by bringing a housing 410 (end surface) described later of the connecting means 40 into contact therewith. It is formed so as to be orthogonal to (or substantially orthogonal to) the axial direction and to face outward. In addition, the valve mechanism side connection part 13 which concerns on this embodiment is comprised so that the housing 410 may be fitted, and the outer periphery of this housing 410 is set to the internal diameter which substantially contacts an inner periphery, The housing 410 that is positioned in the axial direction on the first positioning surface 14 ′ is configured to be able to limit the tilt (inclination) based on the axial direction of the housing 410.

  The operating mechanism 2 includes an operating body 200 that can move in a predetermined axial direction, and a casing 201 that forms a space (sealed space) A in which the operating body 200 is housed. Actuating means 20 provided so as to bisect in the axial direction, urging means 30 for urging the actuating body 200 in any one of the axial directions, and a connection for connecting the valve mechanism 1 and the actuating means 20 Means 40, and supplying the compressed air to one of the spaces A1 and A2 divided into two by the working body 200, the working body 200 moves in any one of the axial directions while the space A1. , The compressed air in A2 is exhausted, and the actuating body 200 is moved in any one of the axial directions by the urging force of the urging means 30 and returned to the original position.

  As described above, the operating means 20 includes the operating body 200 and the casing 201. The operating body 200 includes a diaphragm 202 disposed so as to bisect the sealed space A in the casing 201, and the operating body 200. And a shaft 203 connected in an orthogonal state to the diaphragm 202.

  The diaphragm 202 according to the present embodiment is formed with an insertion hole 204 through which the shaft 203 is inserted substantially at the center. More specifically, the diaphragm 202 according to the present embodiment is connected to the inner periphery of the casing 201 by extending outward from the outer periphery of the plate portion 202a having a substantially disk shape and the plate portion 202a. And a flexible portion 202b. The plate portion 202a has an insertion hole 204a through which the shaft 203 is inserted at the center. The plate portion 202a according to the present embodiment is composed of two disk-shaped metal plates 202a ′ and 202a ′, and the metal plates 202a ′ and 202a ′ are for forming the flexible portion 202b. The sheet-like elastic material 202b ′ is provided so as to be sandwiched therebetween.

  The flexible portion 202b is made of an elastic material such as rubber. The flexible portion 202b according to this embodiment is set to have a larger diameter than the plate portion 202a (larger than the inner diameter of the casing 201), and the insertion hole 204b through which the shaft 203 is inserted is formed in the center portion. It is comprised by the outer peripheral part of elastic material 202b '. In other words, the flexible portion 202b sandwiches a sheet-like elastic material 202b ′ having a larger diameter than the metal plates 202a ′ and 202a ′ between the two metal plates 202a ′ and 202a ′, whereby the metal plate 202a. It is comprised by the annular part extended in radial direction from the outer periphery of ', 202a'.

  The shaft 203 has a stepped rod shape in which small-diameter portions 203b and 203c are formed concentrically on both sides of the large-diameter portion 203a. One small-diameter portion 203b is inserted into the insertion hole 204 of the diaphragm 202, and the small-diameter portion 203b. The diaphragm 202 is sandwiched between a nut (not numbered) screwed into a screw portion (not numbered) provided on the shaft 203 and the large-diameter portion 203a of the shaft 203, thereby being fixed to the diaphragm 202. The shaft 203 is provided so as to be movable in the axial direction (the predetermined axial direction) corresponding to the allowable deformation amount of the flexible portion 202b. The shaft 203 is provided so as to penetrate the casing 201 (first and second casing members 201a and 201b described later). In the present embodiment, the large-diameter portion 203a penetrates the first casing member 201a, and the one small-diameter portion 203b penetrates the second casing member 201b, and the other portion located on the connecting means 40 side. A screw portion N2 for connecting the shaft body 400 of the connecting means 40 is formed in the small diameter portion 203c. The threaded portion N2 is formed in the same form (the same outer diameter, pitch, etc.) as the threaded portion N1 formed on the operating shaft 12 of the valve mechanism 1.

  A seal member S is interposed between the casing 201 and the shaft 203, and the compressed air supplied into the casing 201 is prevented from leaking outside while allowing the shaft 203 to move in the axial direction. It is like that.

  The casing 201 is connected to the first casing member 201a to which the connecting means 40 is connected, and the second casing member that forms the sealed space A together with the first casing member 201a by being connected to the first casing member 201a. 201b.

  The first casing member 201a includes a first casing main body 205 formed in a bottomed cylindrical shape, and a connecting portion (hereinafter referred to as a connecting portion) that is connected to the outer surface of the first casing main body 205 and connects the connecting means 40. , Referred to as an actuator side connecting portion) 206 is provided.

  The first casing body 205 includes a cylindrical first peripheral wall 205a and a first bottom 205b having a circular shape in plan view that closes one end opening of the first peripheral wall 205a. A connection port P1 for connecting an air hose H for supplying compressed air is formed in the first peripheral wall portion 205a so as to communicate the inside and outside. The connection port P1 is configured to screw a joint (not numbered) for connecting the air hose H.

  The first bottom portion 205b is formed with an insertion hole 207 through which the shaft 203 is inserted at the center. An annular groove 208 is formed in the inner periphery of the insertion hole 207, and the sealing member (in this embodiment, an O-ring) for ensuring the sealing performance with the inserted shaft 203 is formed in the annular groove 208. S is arranged.

  The actuator side connecting portion 206 is connected to the outer surface of the first bottom portion 205b so as to be concentric with the shaft 203 extending outward from the first casing member 201a. That is, the actuator side connecting portion 206 is formed in a cylindrical shape that is substantially concentric with the insertion hole 207 so as to surround the insertion hole 207 of the first bottom portion 205b. And the screw groove for screwing together the said screw member 412a, 412b is provided in the outer periphery of the actuator side connection part 206 which concerns on this embodiment.

  Furthermore, a positioning surface (hereinafter referred to as a second positioning surface) 209 for positioning the connecting means 40 with respect to the actuating means 20 (casing 201) is provided inside the actuator side connecting portion 206 according to the present embodiment. Is formed. The second positioning surface 209 is a substantially circular (annular) region corresponding to the end surface shape of the housing 410, and is configured by a straight plane. In the present embodiment, the casing 201 (first casing) 201a).

  The second positioning surface 209 is formed so as to be orthogonal to (or substantially orthogonal to) the predetermined axis and to be directed to the outside, and by contacting the end surface of the housing 410, the axis ( The housing 410 can be positioned such that the center line) and the axis of the shaft 203 inserted through the casing 201 are parallel or substantially parallel (in the present embodiment, concentric or substantially concentric). In addition, the actuator side connection part 206 which concerns on this embodiment is comprised so that the housing 410 may be fitted, and the outer periphery of this housing 410 is set to the internal diameter which substantially contacts an inner periphery. As a result, the actuating means 20 (casing 201) can also be restricted from tilting (inclination) with respect to the axial direction of the housing 410 that is positioned in the axial direction on the positioning surface 209, as in the valve mechanism 1. It is configured.

  The second casing member 201b is composed of a second casing main body 211 having a bottomed cylindrical shape, and a cylindrical connecting part 212 continuously provided over the entire circumference of the opening end of the second casing main body 211. Has been.

  The second casing body 211 includes a cylindrical second peripheral wall portion 211a and a second bottom portion 211b having a circular shape in plan view that closes one end opening of the second peripheral wall portion 211a. The second peripheral wall portion 211a is set to have substantially the same diameter as the first peripheral wall portion 205a, and supplies compressed air into the sealed space A or the air in the sealed space A as with the first peripheral wall portion 205a. A connection port P2 for connecting an air hose H for exhaust is formed so as to communicate the inside and outside.

  The second bottom portion 211b is formed with an insertion hole 213 through which the shaft 203 (one small diameter portion 203b in this embodiment) is inserted. The insertion hole 213 is formed to be concentric with the insertion hole 207 of the first casing member 201a in a state where the sealed space A is formed by the first casing member 201a and the second casing member 201b. An annular groove 214 is formed on the inner periphery of the hole 213. The annular groove 214 is provided with the sealing member (O-ring in the present embodiment) S for ensuring the sealing performance with the inserted shaft 203.

  And the said cylindrical connection part 212 is provided so that it may extend toward the opposite side of the 2nd bottom part 211b from the outer periphery of the opening end side of the 2nd surrounding wall part 211a, and an inner peripheral surface is the 1st casing member 201a. It is comprised so that it can be screwed together in the outer periphery of the 1st surrounding wall part 205a. When the first casing member 201a and the second casing member 201b are screwed together (when the sealed space A is formed), the casing 201 having the above-described configuration is connected to the first peripheral wall portion 205a of the first casing member 201a and the second casing member 201a. The outer peripheral edge of the diaphragm 202 (elastic material 202b ′) is sandwiched between the second peripheral wall portion 211a of the casing member 201b and the outer periphery of the diaphragm 202 is connected to the inner periphery of the casing 201. The diaphragm 202 opens the sealed space A. It is configured to be in a state divided into two in the axial direction (a state in which two spaces A1 and A2 are formed with the diaphragm 202 as a boundary).

  The urging means 30 is composed of a coil spring (compression coil spring). The connecting means 40 is configured to be movable in the axial direction so as to connect the valve body 10 of the valve mechanism 1 and the operating body 200, and the shaft body 400 is inserted, and the valve mechanism A cylindrical housing 410 that connects the main body 11 and the casing 201, a first spring receiver 420 that is fixed to one end of the housing 410 and receives one end of the coil spring 30, and is positioned on the other end of the housing 410. A second spring receiver 430 that is fixed to one end side of the shaft body 400 and receives the other end of the coil spring 30 is provided. In other words, the coupling means 40 according to the present embodiment includes a coil spring 30 as a biasing means for biasing the operating body 200, and the coil spring 30 includes the first spring receiver 420 and the second spring receiver 430. It is intervened between.

  The shaft body 400 is inserted concentrically or substantially concentrically with respect to the cylindrical housing 410. The shaft body 400 is configured such that both ends thereof can be directly or indirectly connected to either the operating body 200 or the valve body 10. The shaft body 400 according to the present embodiment has screw portions at both ends so that the shaft body 400 and the screw portions N1 and N2 (male screws) of the operating shaft 12 connected to the valve body 10 can be screwed together. N3 and N4 (female screws) are formed. The threaded portions N3 and N4 are formed so as to pass over the shaft center of the shaft body 400, and the shaft body 400, the shaft 203, and the operating shaft 12 that are screwed together are concentric.

  The shaft body 400 is configured to be able to fix the second spring receiver 430 on one end side. In the present embodiment, a screw portion (in this embodiment, a male screw) 402 for screwing the second spring receiver 430 into one end portion of the shaft body 400 is formed.

  The housing 410 is configured such that both ends can be connected to either the casing 201 or the valve mechanism 1. The housing 410 according to the present embodiment is formed in a substantially cylindrical shape, and both end portions in the axial direction can be fitted in the valve mechanism side connecting portion 13 and the actuator side connecting portion 206. The housing 410 has both end surfaces in the axial direction orthogonal to its own axis, and when the other end portion is fitted in the valve mechanism side connecting portion 13, the other end surface of the housing 410 is When the other end of the housing 410 comes into surface contact with the first positioning surface 14 'over the entire circumference and is fitted into the actuator-side coupling portion 206, the other positioning surface of the housing 410 extends over the entire circumference. 209 (first casing member 201a) is in surface contact.

  In addition, when the inner end of the housing 410 is also fitted into the valve mechanism side connecting portion 13, it is in surface contact with the first positioning surface 14 ′ over the entire circumference and is fitted into the actuator side connecting portion 206. Although it may be configured to make surface contact with the second positioning surface 209 (first casing member 201a) over the entire circumference, in the present embodiment, the first spring support fixed to one end side of the housing 410 is provided. Since the large-diameter portion 421 (described later) of the body 420 is sandwiched between the housing 410 and the valve mechanism 1 (valve mechanism main body 11) or the operating means 20 (casing 201), one end surface of the housing 410 is large. When the one end side of the housing 410 abuts on the valve mechanism side connecting portion 13 when it is in contact with the diameter portion 421 over the entire circumference, it is opposite to the surface of the large diameter portion 421 that contacts the housing 410. ~ side When the surface (hereinafter referred to as a contact surface) is in surface contact with the first positioning surface 14 ′ over the entire circumference and the one end side of the housing 410 is fitted into the actuator-side connecting portion 206, The contact surface is configured to be in surface contact with the second positioning surface 209 (first casing member 201a) over the entire circumference.

  Further, flanges 411 and 411 extending radially outward are provided at both ends of the housing 410 in the axial direction. When the end of the housing 410 is fitted into the valve mechanism side connecting portion 13 or the actuator side connecting portion 206, each flange portion 411, 411 is formed on the annular end surface of the valve mechanism side connecting portion 13 or the actuator side connecting portion 206. It is comprised so that it may contact | abut. And each collar part 411,411 is set to the same diameter as the outer diameter of valve mechanism side connection part 13 or actuator side connection part 206, or smaller than these, and when making it contact with an annular end face, It is formed so as not to extend radially outward from the outer periphery of the valve mechanism side connecting portion 13 or the actuator side connecting portion 206.

  Further, the screw member 412a, 412b that can be screwed into any of the valve mechanism side connecting portion 13 and the actuator side connecting portion 206 is externally fitted to the housing 410. Two screw members 412a and 412b are provided for one end side and for the other end side of the housing 410, and have the same configuration. Each of the screw members 412a and 412b includes an annular pressing portion 413 for pressing the flange portions 411 and 411 provided in the housing 410, and a cylindrical screwing portion 414 connected to the outer periphery of the annular pressing portion 413. Has been. The annular pressing portion 413 has a hole that is slightly larger than the outer diameter of the housing 410 and has a donut shape in plan view, and is externally fitted to the housing 410 so as to be movable in the axial direction. The screwing portion 414 has screw grooves (female screws) corresponding to the screw grooves formed on the outer periphery of the valve mechanism side connecting portion 13 and the actuator side connecting portion 206 on the inner peripheral surface.

  The two screw members 412a and 412b are a pair of the housing 410 in a state where the annular pressing portions 413 are opposed to each other (with the back) and the screwing portion 414 is positioned on the end side in the axial direction of the housing 410. Are fitted between the flange portions 411 and 411. Thereby, when each screw member 412a, 412b (screwing part) is screwed to the valve mechanism side connecting part 13 and the actuator side connecting part 206, the annular pressing part 413 and the valve mechanism side connecting part 13 or the actuator side connecting The flanges 411 and 411 of the housing 410 are sandwiched by the end face of the portion 206 so that the housing 410 can be connected to the valve mechanism 1 and the operating means 20.

  The first spring receiver 420 is configured to be detachable from the housing 410. Specifically, the first spring receiver 420 according to the present embodiment is formed in a cylindrical shape so that it can be fitted into one end of the housing 410, and one end in the axial direction is larger than the inner diameter of the housing 410. A large-diameter portion 421 that has a large diameter and is set to be the same as or smaller than the outer diameter of the housing 410 is formed. As a result, the first spring receiver 420 has the other end side fitted in the housing 410 and the large diameter portion 421 contacts the one end surface of the housing 410 and the other end surface receives the coil spring 30 as described above. It becomes a receiving surface and can be extracted from the housing 410. As described above, when the housing 410 is connected to the valve mechanism 1 or the operating means 20 by the screw members 412a and 412b, the large-diameter portion 421 of the first spring receiver 420 is connected to the end surface of the housing 410 and the operating means 20. The first spring receiver 420 is fixed to the housing 410 by being sandwiched between the casing 201 (second positioning surface 209) or the positioning portion 14 (first positioning surface 14 ') of the valve mechanism 1. It has come to be.

  The first spring receiver 420 is provided with a shaft hole 422 through which the shaft body 400 is inserted so as to be movable concentrically with the housing 410. The first spring receiver 420 is formed such that a substantially truncated cone-shaped recess 423 having a small diameter toward the other end surface is communicated with the shaft hole 422 substantially concentrically at one end surface.

  In the operating mechanism 2 according to the present embodiment, as described above, the large-diameter portion 421 of the first spring receiver 420 has the housing 410 and the casing 201 (positioning surface 209) or the valve mechanism body 11 (positioning portion 14). Since the first spring receiver 420 is fixed by being sandwiched between the two, the length in the axial direction from the flange 411 on one end side of the housing 410 to one end of the housing 410 is The length is set by subtracting the thickness in the axial direction of the large diameter portion 421 from the length in the axial direction between the provided flange portions 411 and 411 and the other end of the housing 410. Accordingly, the length from the end face of the large diameter portion 421 to the flange portions 411 and 411 on one end side of the housing 410 matches the length of the flange portions 411 and 411 on the other end portion side from the other end of the housing 410. The flanges 411 and 411 correspond to the positional relationship between the valve mechanism side connecting portion 13 and the actuator side connecting portion 206.

  A cylindrical portion 425 through which the shaft body 400 is inserted is connected to the first spring receiver 420 according to the present embodiment. The cylindrical portion 425 has an outer diameter that is smaller than the inner diameter of the coil spring 30 and an inner diameter of the inner hole 427 that is slightly larger than the outer diameter of the shaft body 400, and the inner hole 427 is the first spring receiver. The first spring receiver 420 is connected to the other end surface so as to be substantially concentric with the shaft hole 422 of the 420.

  Further, cylindrical bushes 426 and 426 as guide members for guiding the shaft body 400 are fitted into both ends of the cylindrical portion 425 in the axial direction. In the present embodiment, the cylindrical portion 425 is connected to the first spring receiver 420, and the shaft hole 422 of the first spring receiver 420 and the inner hole 427 of the cylindrical portion 425 are in communication with each other. The bush 426 on the first spring receiver 420 side is disposed so as to straddle the inner hole 427 and the shaft hole 422 of the cylindrical portion 425. As described above, the bushes 426 and 426 for guiding the shaft body 400 are arranged at intervals in the axial direction, so that the shaft body 400 can move in the axial direction without causing a core blur.

  The second spring receiver 430 is formed in a substantially disc shape whose outer diameter is set slightly smaller than the inner diameter of the housing 410, and a screw portion 402 formed at one end of the shaft body 400 at the center. A screw hole 431 to be screwed is formed to penetrate therethrough. Accordingly, by rotating the second spring receiver 430 screwed to the shaft body 400, the position of the second spring receiver 430 can be changed in the axial direction of the shaft body 400 (the predetermined axial direction). It is like that. The second spring receiver 430 is formed with an annular convex portion 432 on the surface facing the first spring receiver 420 so as to surround the screw hole 431. The annular convex portion 432 is formed so that the outer diameter with respect to the center of the hole corresponds to the inner diameter of the coil spring 30, so that the coil spring 30 can be positioned by being fitted inside the end of the coil spring 30. It has become.

  The coil spring 30 is externally fitted between the first spring receiver 420 and the second spring receiver 430 to the shaft body 400 (in this embodiment, the tubular portion 425 through which the shaft body 400 is inserted). One end is received by the first spring receiver 420 and the other end is received by the second spring receiver 430.

  The pneumatic operating valve having the above configuration connects the operating body 200 (the shaft 203) and the valve body 10 (the operating shaft 12) via the shaft body 400, and either one end of the housing 410 of the connecting means 40 is connected. While being fitted into one of the valve mechanism side coupling part 13 or the actuator side coupling part 206, the other end of the housing 410 is fitted into the other of the valve mechanism side coupling part 13 or the actuator side coupling part 206, Assembling is completed by screwing the screw members 412a and 412b into the connecting portions 13 and 206, respectively.

  In order to restrict the movement of the shaft body 400 toward the actuating means 20 side, in this embodiment, the shaft 203 and the shaft body and the annular restriction plate 440 having a larger diameter than the shaft body 400 are used. 400 and the restriction plate 440 contacts the casing 201 of the actuating means 20 (around the hole through which the actuating shaft 12 is inserted) to move the shaft 400 toward the actuating means 20 side. I try to regulate it.

  As shown in FIG. 2A, the first spring receiver 420 is positioned on the actuating means 20 side, and the second spring receiver 430 is positioned on the valve mechanism 1 side so that the connecting means 40 operates the actuating means. When the valve mechanism 1 is connected to the valve mechanism 1, the urging force of the coil spring 30 acts in one direction in the axial direction in a normal state, and the operating body 200 (diaphragm 202) in the operating means 20 is placed in the casing 201 (sealed space A). And the valve body 10 of the valve mechanism 1 is also shifted in the same direction. Therefore, in the valve mechanism 1 shown in FIG. 2, the valve body 10 is in the state which obstruct | occluded the flow path by the normal state. In the present embodiment, one direction in the axial direction means the direction in which the axis extends, and the direction from the connecting means 40 side toward the valve mechanism 1 side. The other direction in the axial direction means the direction in which the axis extends. In this case, it means a direction from the connecting means 40 side to the actuating means 20 side.

  From this state, as shown in FIG. 3A, when compressed air is supplied from the connection port P1 provided in the first casing member 201a, the diaphragm 202 is displaced in the other axial direction by the pressure Ep of the compressed air. However, the air in the space A2 on the second casing member 201b side defined by the diaphragm 202 is exhausted from the connection port P2 provided in the second casing member 201b. When the diaphragm 202 is displaced in the other direction in the axial direction in this way, the shaft body 400, the operating shaft 12 and the valve body 10 are also displaced in the other direction in the axial direction together with the shaft 203 connected to the diaphragm 202. The mechanism 1 will operate. Therefore, in the valve mechanism 1 shown in FIG. 2, by supplying compressed air, the flow path in the valve mechanism 1 is opened, and the fluid can be circulated.

  As shown in FIG. 3B, when the compressed air supplied to the operating means 20 is exhausted from the connection port P1 of the first casing member 201a, the shaft body 400 is applied by the biasing force Sp of the coil spring 30 in the connecting means 40. The shaft 203 and the operating shaft 12 move in one axial direction. As a result, while the diaphragm 202 is displaced in one axial direction, air flows into the space A2 on the second casing member 201b side from the connection port P2 provided in the second casing member 201b. As a result, the diaphragm 202 of the actuating means 20 and the valve body 10 in the valve mechanism 1 are moved in the same direction as the shaft body 400 and returned to their original positions.

  As shown in FIG. 2B, the first spring receiver 420 is positioned on the valve mechanism 1 side, and the second spring receiver 430 is positioned on the operating means 20 side. When the valve mechanism 1 is connected to the valve mechanism 1, the urging force of the coil spring 30 normally acts in the other axial direction (on the operating means 20 side), and the operating body 200 (diaphragm 202) in the operating means 20 is in the casing. In 201 (in the space A), the valve body 10 of the valve mechanism 1 is displaced in the same direction while being displaced in the other direction in the axial direction. Therefore, in this case, in the valve mechanism 1 shown in FIG. 2, the flow path in the valve mechanism 1 is normally opened, and the fluid can be circulated.

  From this state, as shown in FIG. 4A, when compressed air is supplied from the connection port P2 provided in the second casing member 201b, the diaphragm 202 is displaced in one axial direction by the pressure Ep of the compressed air. However, the air in the space A1 on the first casing member 201a side defined by the diaphragm 202 is exhausted from the connection port P1 provided in the first casing member 201a. When the diaphragm 202 is displaced in one axial direction in this way, the shaft body 400, the operating shaft 12 and the valve body 10 are also displaced in one axial direction together with the shaft 203 connected to the diaphragm 202. As a result, the valve mechanism 1 Will be activated. Therefore, in the valve mechanism 1 shown in FIG. 2B, the valve body 10 is in a state of closing the flow path by supplying the compressed air.

  As shown in FIG. 4B, when the compressed air supplied to the operating means 20 is exhausted from the connection port P2 of the second casing member 201b, the shaft body 400 is applied by the biasing force Sp of the coil spring 30 in the connecting means 40. The shaft 203 and the operating shaft 12 move in the other direction of the axial direction. As a result, air flows into the space A1 on the first casing member 201a side from the connection port P1 provided in the first casing member 201a while the diaphragm 202 is displaced in the other direction of the axial direction. As a result, the diaphragm 202 of the actuating means 20 and the valve body 10 in the valve mechanism 1 move in the same direction as the shaft body 400 and return to the original position.

  In the pneumatic operating valve according to the present embodiment, the first spring receiver 420 can be removed from the housing 410, so that the other end side of the housing 410 is shown in FIGS. 5 (a) and 5 (b). And the coil spring 30 can be removed. Then, when the coil spring 30 is removed and the first spring receiver 420 is attached to the housing 410, and the operating means 20 and the valve mechanism 1 are connected by the connecting means 40, the pneumatic operating valve is a pneumatic return valve. It becomes. In FIGS. 5A and 5B, the first spring receiver 420 is fixed to the shaft body 400. When the coil spring 30 is removed in this way, the first spring receiver 420 is fixed. It may be removed.

  In this case, as shown in FIG. 5 (a), the first spring receiver 420 is positioned on the operating means 20 side, and the second spring receiver 430 is positioned on the valve mechanism 1 side and is operated by the connecting means 40. Even if the means 20 and the valve mechanism 1 are connected, the biasing force of the coil spring 30 does not act in the normal state. Therefore, as shown in FIGS. 6A and 6B, the first casing member in the casing 201 is used. Compressed air is always supplied to the internal spaces A1 and A2 from either the connection port P1 on the 201a side or the connection port P2 on the second casing member 201b side.

  Specifically, as shown in FIG. 6A, by supplying compressed air from the connection port P1 on the first casing member 201a side, the diaphragm 202 is moved in the other axial direction by the pressure Ep of the compressed air. While being displaced, the air in the space A2 on the second casing member 201b side defined by the diaphragm 202 is exhausted from the connection port P2 provided in the second casing member 201b. Thus, when the diaphragm 202 is displaced in the other direction of the axial direction, the shaft body 400, the operating shaft 12 and the valve body 10 are also displaced in the other direction of the axial direction together with the shaft 203 connected to the diaphragm 202. Will be activated.

  Then, from this state, as shown in FIG. 6 (b), while supplying compressed air from the connection port P2 on the second casing member 201b side and exhausting compressed air from the connection port P1 on the first casing member 201a side, The diaphragm 202 is displaced in one axial direction by the pressure Ep of the compressed air. When the diaphragm 202 is displaced in one axial direction in this way, the shaft body 400, the operating shaft 12 and the valve body 10 are also displaced in one axial direction together with the shaft 203 connected to the diaphragm 202. As a result, the valve mechanism 1 Will be activated.

  Even when the coil spring 30 is removed from the connecting means 40 as described above, the second spring receiver 430 is positioned on the operating means 20 side as shown in FIG. Even if the actuating means 20 and the valve mechanism 1 are connected by the connecting means 40 so that 420 is positioned on the valve mechanism 1 side, the coil spring 30 is not restrained in the urging direction, so that FIG. As shown in b), by supplying compressed air to the connection ports P1 and P2 and exhausting compressed air from the connection ports P1 and P2, the valve mechanism 1 is operated in the same manner as in the above-described mounting mode. be able to.

  As described above, the pneumatic operation valve according to the present embodiment can have different operation modes of the valve mechanism 1 simply by reversing the single connecting means 40 constituting the operation mechanism 2. Thus, the pneumatic operating valve does not require a spare part such as a dedicated part for changing the operation mode of the valve mechanism 1 and can change the operation mode of the valve mechanism 1 with a simple operation. Such an excellent effect can be achieved.

  Further, since the pneumatic operating valve according to the present embodiment can also remove the coil spring 30, the reciprocating operation of displacing the operating body 200 (valve body 10) in both the axial direction and the other direction by the supply of compressed air. It can also be changed to one having a moving type actuating mechanism 2.

  And since the said 2nd spring receptacle 430 is provided so that position adjustment is possible in the axial center direction of the axial body 400, the adjustment of the urging | biasing force with respect to the 2nd spring receptacle 430 (operating body 200) can be performed, It is also possible to adjust the operation timing of the valve body 10 and the like.

  Furthermore, it further includes a cylindrical portion 425 that is connected to the first spring receiver 420 and into which the shaft body 400 is inserted substantially concentrically, and a shaft body is provided on the inner periphery of both ends of the cylindrical portion 425 in the axial direction. Since the guide member (bush) 426 is provided to guide the shaft 400 in the axial direction, even if the shaft body 400 can be moved in the axial direction, the shaft shake of the shaft body 400 can be suppressed, and a smooth operation is realized. can do.

  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 pneumatic operating valve including the valve mechanism 1 and the operating mechanism 2 has been described. However, for example, the operating mechanism 2 may be configured as an independent one that can be connected to the various valve mechanisms 1. Even if it does in this way, the operation direction of the various valve mechanisms 1 can be made into a reverse direction by inverting the connection means 40 which comprises the operation mechanism 2. FIG.

  In the above embodiment, the operating body 200 in the operating means 20 is configured by the diaphragm 202 and the shaft 203 connected to the diaphragm 202. However, the present invention is not limited to this. For example, the casing 201 is formed in a cylindrical shape. The operating body 200 may be configured by a piston that is movable substantially concentrically with the casing 201 and a piston rod (corresponding to the shaft 203) connected to the piston.

  And in the said embodiment, although it provided so that the shaft 203 might penetrate the casing 201 whole (it penetrates both the 1st casing member 201a and the 2nd casing member 201b), it is not limited to this, For example, The shaft 203 (piston rod) may be passed through only the first casing member 201a connected to the connecting means 40.

  In the embodiment described above, the first spring receiver 420 is detached and the coil spring 30 is removed. However, the present invention is not limited to this. For example, the first spring receiver 420 is fixed to the housing 410. Alternatively, the second spring receiver 430 may be configured to be removable from the shaft body 400, and the second spring receiver 430 may be removed to remove the coil spring 30.

  In the above-described embodiment, the first spring receiver 420 is provided with the large-diameter portion 421, and the large-diameter portion 421 is sandwiched between the housing 410 and the valve mechanism 1 (positioning portion 14) or the operating means 20 (casing 201). The first spring receiver 420 is fixed. For example, a screw groove is formed on the outer periphery of the first spring receiver 420 and a screw groove is formed on the inner periphery of the housing 410. The spring receiver 420 may be screwed together. Even in this way, the coil spring 30 can be removed by removing the first spring receiver 420 by relatively rotating the housing 410 and the first spring receiver 420.

  Further, it is not always necessary to remove the coil spring 30, and it may be a structure in which the urging force of the coil spring 30 always acts on the operating body 200 via the shaft body 400.

  In the above-described embodiment, the second spring receiver 430 is configured to be movable in the axial direction of the shaft body 400. However, the present invention is not limited to this. It may be a fixed configuration. However, in order to give an appropriate biasing force, it is preferable that the second spring receiver 430 is movable so that the biasing force can be adjusted.

  Further, in the above embodiment, the cylindrical portion 425 is connected to the first spring receiver 420, and the bushes 426 and 426 as guide members are provided at both ends of the cylindrical portion 425. However, the present invention is not limited to this. For example, a guide member (bush) may be provided over the entire axial length of the cylindrical portion 425. Moreover, in the said embodiment, although the cylindrical part 425 was continuously provided in the 1st spring receiving part 420, the cylindrical part 425 does not necessarily need to be provided and should just be provided as needed. However, in order to ensure the smooth operation of the operation mechanism 2, it is needless to say that the cylindrical portion 425 is provided and the guide member 426 that guides the shaft body 400 is provided at at least both ends of the cylindrical portion 425.

  DESCRIPTION OF SYMBOLS 1 ... Valve mechanism, 2 ... Actuation mechanism (pneumatic operation mechanism), 10 ... Valve body, 11 ... Valve mechanism main body, 12 ... Actuation shaft, 13 ... Valve mechanism side connection part, 14 ... Positioning part, 14 '... 1st 1 positioning surface (positioning surface), 20 ... acting means, 30 ... biasing means (coil spring), 40 ... connecting means, 200 ... acting body, 201 ... casing, 201a ... first casing member, 201b ... second casing 202, diaphragm, 202a ... plate part, 202a '... metal plate, 202b ... flexible part, 202b' ... elastic material, 203 ... shaft, 203a ... large diameter part, 203b, 203c ... small diameter part, 204, 204a, 204b ... insertion hole, 205 ... first casing body, 205a ... first peripheral wall, 205b ... first bottom, 206 ... actuator side connecting portion, 207 ... insertion hole, 208 ... annular 209, second positioning surface (positioning surface), 211, second casing body, 211a, second peripheral wall, 211b, second bottom, 212, cylindrical connecting portion, 213, insertion hole, 214, annular Groove, 400 ... shaft body, 402 ... screw portion, 410 ... housing, 411,411, flange portion, 412a, 412b ... screw member, 413 ... annular pressing portion, 414 ... screw fitting portion, 420 ... first spring receiver, 421 ... large diameter portion, 422 ... shaft hole, 423 ... concave portion, 425 ... cylindrical portion, 426 ... bush, 427 ... inner hole, 430 ... second spring receiver, 431 ... screw hole, 432 ... annular convex portion, 440 ... Regulating plate, A ... Sealed space, A1, A2 ... Space, H ... Air hose, N1, N2 ... Screw part (male thread), N3, N4 ... Screw part (female thread), P1, P2 ... Connection port, S ... Seal member

Claims (2)

  An actuating body movable in a predetermined axial direction, and a casing forming a space in which the actuating body is housed, and an actuating means provided so that the actuating body bisects the space in the axial direction; An urging means for urging the operating body in any one direction; and a linking means for linking the valve mechanism for controlling the flow of fluid and the activating means, wherein the linking means is movable in the axial direction. A shaft body configured to connect the valve body of the valve mechanism and the operating body, and supplying the compressed air to one of the spaces divided into the operating body, the operating body is any one of the axial directions While moving in the direction, the working body is moved in any one of the axial directions by the urging force of the urging means by exhausting the compressed air in the space and returned to the original position. A pneumatic operating mechanism, wherein the biasing means is a coil spring. The connecting means includes a cylindrical housing in which the shaft body is inserted, and a cylinder provided in a valve mechanism that is rotatably attached to both ends of the housing around the axis as a rotation center. A pair of screw members configured to be screwed in an externally fitted state to any of the cylindrical valve mechanism side coupling portion and the cylindrical actuator side coupling portion provided in the casing of the operating means, A first spring receiver fixed to one end and receiving one end of the coil spring, and a second spring receiver fixed to one end of the shaft positioned on the other end of the housing and receiving the other end of the coil spring The shaft body is configured such that both ends thereof can be connected to both the operating body and the valve body, and the housing is a pair in a state where both ends of the shaft body are connected to the operating body and the valve body. Each screw member is a valve mechanism Pneumatic actuation mechanism both ends screwed in the connecting portion and the actuator-side connecting portion is characterized by being configured to be coupled to the valve mechanism and the casing.   A valve mechanism that controls flow of fluid; and a pneumatic operating mechanism that operates the valve mechanism by supplying compressed air. The pneumatic operating mechanism is movable in a predetermined axial direction, and the operating body. An operating means provided so that the operating body bisects the space in the axial direction, and a biasing means for biasing the operating body in any one of the axial directions A connection mechanism that connects the valve mechanism that performs fluid flow control and the operation means, and the connection means is configured to be movable in the axial direction and connects the valve body of the valve mechanism and the operation body. The operating body moves in any one of the axial directions by supplying compressed air to one of the spaces divided into the operating body, and exhausts the compressed air in the space. The actuating body is urged by the urging means so that the axis is A pneumatically operated valve configured to move in any one direction and return to its original position, wherein the urging means is constituted by a coil spring, and the connecting means includes An inserted cylindrical housing, and a cylindrical valve mechanism side connecting portion provided in the valve mechanism and a casing of the operating means, which is rotatably attached to both ends of the housing with the axis as a rotation center. A pair of screw members configured to be threadably engageable with any of the provided cylindrical actuator-side coupling portions, and a first member that is fixed to one end inside the housing and receives one end of the coil spring. A first spring receiver and a second spring receiver fixed to one end of the shaft located on the other end of the housing and receiving the other end of the coil spring, the shaft being actuated at both ends. Connectable to both body and valve body The housing is configured in a state where both ends of the shaft body are connected to the operating body and the valve body, and each of the pair of screw members is screwed to the valve mechanism side connecting portion and the actuator side connecting portion, and both ends are A pneumatically operated valve configured to be connected to a valve mechanism and a casing.

Images