JP2017194130A - Non-slide valve and assembly method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-slide valve in which a connection structure of a valve element and valve stems is simplified and the valve element can be opened and closed in a non-sliding manner by simple rotation operation of the valve stems.SOLUTION: A non-slide valve 1 comprises a valve casing 2, a valve element 3, and valve stems 4, 5 rotating the valve element 3, and comprises a connection mechanism 56 connecting the valve element 3 to the valve stems 4, 5 in a co-rotatable manner and in a manner linearly-movable in an orthogonal direction to the valve stem axis O2, a bias member 57 biasing the valve element 3 to a neutral position P1 in the orthogonal direction to the valve stem axis O2, and a pressing mechanism 58 that is provided between the valve casing 2 and the valve element 3 and presses the valve element 3 to a valve seat 18 against the biasing force of the bias member 57 at the time when the valve element 3 is closed. The valve element 3 comprises a ball valve 31, and a pair of valve element receiving members 32, 33 installed to the ball valve 31 and the valve stem 4, 5 to rotate integrally with the ball valve 31. The valve casing 2 comprises a first valve casing 7 having a ball valve insertion opening 15, and a second valve casing 8 internally fitted to the inner peripheral wall of the ball valve insertion opening 15.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a non-sliding valve and an assembling method thereof.

  As a valve designed to reduce the wear of the valve seat, the valve body is brought into close contact with the valve seat only when the valve body is closed, and the valve body and the valve seat are not in contact with each other during the other opening / closing operation. There is a valve, and a conventional example thereof is described in Patent Document 1. In Patent Document 1, the first shaft (one valve rod) is connected to the valve body so as to be able to transmit rotation, while the second shaft (the other valve rod) is connected so as not to be able to transmit rotation, and the second shaft is connected to the second shaft. A ball valve is described in which a pressing portion is provided and a pressed portion that is pressed by the pressing portion is provided on the valve body. According to this ball valve, the valve body is opened and closed by rotating the first shaft, and only when the valve body is fully closed, the second shaft is rotated to press the pressing portion against the pressed portion. Is in close contact with the seat member (valve seat).

JP 2008-95811 A

  According to the technique of Patent Document 1, since one valve stem is connected to the valve body so as to be able to transmit rotation, and the other valve rod is connected so as not to be able to transmit rotation, the structure for connecting the valve body and the valve rod is complicated. There is a problem of becoming. In addition, since two valve rods need to be rotated, two rotation operation mechanisms such as a lever are also required, the valve becomes larger and the opening / closing operation procedure becomes complicated.

  The present invention has been created to solve such problems, and the connection structure between the valve body and the valve stem is simplified, and the valve body can be opened and closed without sliding by a simple rotation operation of the valve stem. An object is to provide a non-sliding valve and a method of assembling the same.

  In order to solve the above-described problems, the present invention provides a non-sliding device including a valve box provided with a valve seat, a valve body that opens and closes a flow path in the valve box, and a valve rod that rotates the valve body. A valve mechanism for connecting the valve body to the valve stem so that the valve body can be rotated and linearly movable in a direction orthogonal to the valve stem axis; and the valve body in a neutral position in the orthogonal direction. An urging member that urges, and a pressing mechanism that is provided between the valve box and the valve body and presses the valve body against the valve seat against the urging force of the urging member when the valve body is closed. The valve body includes a ball valve, and a pair of valve body receiving members assembled to the ball valve and the valve rod so as to rotate integrally with the ball valve. A first valve box having an insertion opening and one flow path end opening are formed, the ball valve insertion opening Characterized in that it comprises a second valve box for internally fitted to the inner peripheral wall of.

The present invention provides a connecting mechanism for the valve body and the valve stem, wherein the valve body is connected to the valve stem so that the valve body can be rotated and linearly movable in a direction orthogonal to the valve stem axis. Regarding the pressing mechanism that presses against the valve seat, it is provided not between the valve body and the valve stem as in Patent Document 1, but between the valve box and the valve body. As a result, the connecting mechanism between the valve body and the valve rod is simple, and as in Patent Document 1, one valve rod is connected to the valve body so as to be capable of rotational transmission, and the other valve rod is not capable of rotational transmission. There is no need to connect to. In addition, since it is not necessary to rotate the two valve rods separately, the valve can be made smaller and the opening / closing operation procedure is simplified.
Then, the ball valve and the valve body receiving member can be separately put into the first valve box from the ball valve insertion opening and assembled inside the first valve box. Accordingly, the diameter of the ball valve insertion opening can be suppressed to be slightly larger than the diameter of the ball valve, and the degree of freedom in structural design of the first valve box and the second valve box is increased.

  Further, according to the present invention, the connection mechanism includes a connection groove formed in the valve body receiving member along the orthogonal direction, and a cross-sectional shape formed in the valve stem and capable of being rotated together. And the biasing member is received in the spring receiving hole of the connecting pin, one end abuts against the bottom of the spring receiving hole, and the other end is on the groove end surface of the connecting groove. It is the spring member which contacts, It is characterized by the above-mentioned.

  According to the present invention, the structure of the coupling mechanism and the assembly structure of the spring member can be simplified.

  Further, according to the present invention, the pressing mechanism includes a position adjusting bolt that is screwed to the valve box so that the position can be adjusted, a boss portion that protrudes from the valve body receiving member and contacts the tip of the position adjusting bolt, It is characterized by having.

  According to the present invention, since the position adjusting bolt screwed into the valve box so that the position can be adjusted is provided, the pressing force of the valve body to the valve seat can be easily adjusted.

  Further, the present invention is characterized in that the other flow path end opening is formed, and a valve seat pressing member that is attached to the first valve box and prevents the valve seat from coming off is provided.

  According to the present invention, the valve seat can be assembled to the valve box by a simple assembling operation.

  The present invention also relates to a non-sliding valve assembling method comprising: a valve box provided with a valve seat; a valve body that opens and closes a flow path in the valve box; and a valve rod that rotates the valve body. The non-sliding valve includes a connecting mechanism that connects the valve body to the valve stem so that the valve body can be rotated and linearly movable in a direction orthogonal to the valve stem axis, and the valve body is orthogonal to the valve stem. An urging member for urging to a neutral position in the direction; and provided between the valve box and the valve body, and when the valve body is closed, the valve body is opposed to the urging force of the urging member. A pressing mechanism that presses against a seat, and the valve body includes a ball valve, and a pair of valve body receiving members that are assembled to the ball valve and the valve stem so as to rotate integrally with the ball valve. The box is formed with a first valve box having a ball valve insertion opening and one flow path end opening. A second valve box that fits inside the inner peripheral wall of the valve insertion opening, and the coupling mechanism is formed in the valve rod and a coupling groove formed in the valve body receiving member along the orthogonal direction. A connecting pin that has a cross-sectional shape that can be rotated and is loosely fitted in the connecting groove, and the biasing member is received in the spring receiving hole of the connecting pin, and one end thereof is a hole in the spring receiving hole. A spring member that abuts the bottom and the other end abuts against the groove end surface of the connecting groove, the valve stem, the valve body receiving member, and the spring member being assembled to create a valve stem assembly; A second step of inserting the rod assembly into the first valve box; a third step of inserting the ball valve into the first valve box through the ball valve insertion opening and assembling the valve valve assembly; A fourth step of assembling the valve box to the first valve box in that order; And wherein the Ukoto.

  According to the present invention, the valve stem assembly can be easily assembled outside the valve box. Then, the valve stem assembly and the ball valve are separately placed in the first valve box and assembled inside the first valve box, so that the diameter of the ball valve insertion opening is suppressed to be slightly larger than the diameter of the ball valve. This increases the degree of freedom in structural design of the first valve box and the second valve box.

  Further, according to the present invention, in the valve stem assembly, a tip of the connection pin penetrates the connection groove and protrudes from the valve body receiving member, and is formed on the peripheral surface of the ball valve along the orthogonal direction. A guide groove is formed in which the tip of the connecting pin is loosely fitted.In the third step, the ball valve is placed inside the first valve box while the tip of the connecting pin is loosely fitted in the guide groove. The ball valve and the valve body receiving member are fitted in an uneven shape.

  According to the present invention, the ball valve and the valve body receiving member can be assembled smoothly inside the first valve box.

  According to the present invention, the connection structure of the valve body and the valve stem is simplified, and the valve body can be opened and closed without sliding by a simple rotation operation of the valve stem. In addition, the diameter of the ball valve insertion opening can be suppressed to be slightly larger than the diameter of the ball valve, and the degree of freedom in structural design of the first valve box and the second valve box is increased.

It is a sectional side view which shows the fully open state of the non-sliding valve concerning this invention. It is a sectional side view which shows the fully closed state of the non-sliding valve concerning this invention. It is a disassembled perspective view of the non-sliding valve concerning the present invention. It is explanatory drawing of the pressing mechanism and compression coil spring seen from the valve-shaft axial direction, (a) shows the case where a non-sliding valve is a full open state, (b) shows the case where a non-sliding valve is a fully closed state.

  1 to 4, a non-sliding valve 1 includes a valve box 2, a valve body 3 that opens and closes a flow path 6 in the valve box 2, and valve rods 4 and 5 that rotate the valve body 3. It is equipped with.

"Valve box 2"
The valve box 2 is divided into a first valve box 7 and a second valve box 8. The first valve box 7 includes a base portion 9 that accommodates the valve body 3, a flange portion 10 that is formed on the other side of the flow path 6 around the flow path axis O1 and is connected to a mating pipe flange, A cylindrical valve stem support 11 that extends around a valve stem axis O2 that is orthogonal to the path axis O1 and supports one valve stem 4, and extends around the valve stem axis O2. And a cylindrical valve stem support portion 12 for supporting the other valve stem 5. A flange portion 13 for attaching a thrust receiving member 48 to be described later is formed at the distal end of the valve stem support portion 11, and a flange portion 14 for attaching a lid member 42 is formed at the distal end of the valve stem support portion 12. ing. Further, the first valve box 7 has a ball valve insertion opening 15 formed on one side of the flow path 6 around the flow path axis O1 and a flow path center O1 on the other side of the flow path 6. And an internal thread portion 16 formed as follows. A diameter L2 of the ball valve insertion opening 15 is smaller than a distance L3 between outer ends of a pair of valve body receiving members 32 and 33, which will be described later, and larger than a diameter L1 of the ball valve 31.

  An annular valve seat fitting groove portion 17 centering on the flow path axis O1 is formed on the inner wall of the base portion 9 closer to the inner side of the valve box 2 than the female screw portion 16. The valve seat 18 is an elastically deformable annular member made of a cored Teflon (registered trademark) resin material or the like. The deformed state is passed through the female screw portion 16 to be elastically restored, thereby allowing the valve seat fitting groove portion 17 to be restored. Mating. A valve seat pressing member 19 is screwed into the female screw portion 16. The valve seat pressing member 19 is an annular member in which the other flow path end opening 20 is formed. The valve seat pressing member 19 is formed with a male screw portion that is screwed into the female screw portion 16 and has one end abutting against the valve seat 18. The flange portion 22 extends radially outward from the other end of the body portion 21 and is applied to the outer surface of the first valve box 7. A seal member 23 is interposed between the first valve box 7 and the flange portion 22. The valve seat pressing member 19 supports the valve seat 18 by one end of the body portion 21 coming into contact with the valve seat 18 and prevents the valve seat 18 from coming off from the first valve box 7. A plurality of recesses 24 are formed in the circumferential direction on the outer periphery of the flange portion 22, and a valve seat is obtained by hooking a bolt head of a detent bolt 25 screwed into the first valve box 7 onto any one of the recesses 24. The presser member 19 is prevented from loosening.

  The second valve box 8 is fitted on the inner peripheral wall of the ball valve insertion opening 15 and the flange portion 26 formed on one side of the flow passage 6 around the flow passage axis O1 and connected to the opposite pipe flange. And a fitting portion 27. One flow path end opening 28 is formed in the second valve box 8. The second valve box 8 is assembled to the first valve box 7 with a bolt (not shown) in a state where the fitting portion 27 is fitted in the inner peripheral wall of the ball valve insertion opening 15. A seal member 29 is interposed between the inner peripheral wall of the ball valve insertion opening 15 and the fitting portion 27.

“Valve 3”
The valve body 3 includes a spherical ball valve 31 having a through-hole 30 penetrating the center, and a pair of valve body receiving members 32 that are assembled to the ball valve 31 and the valve rods 4 and 5 so as to rotate integrally with the ball valve 31. , 33. The valve body receiving members 32 and 33 are symmetrical with respect to the ball valve 31. The valve body receiving member 32 has a short columnar shape centered on the valve stem axis O2, and a connection groove 59 penetrating in the direction of the valve stem axis O2 is formed so that the connection pin 60 of the valve stem 4 is inserted. ing. On both sides of the connecting groove 59 on one end surface of the valve body receiving member 32, when viewed in the direction of the valve stem axis O2, substantially semi-moon-like fitting convex portions 34, 34 that draw an arc around the valve stem axis O2. Is protruding. On the other hand, on the outer peripheral surface of the ball valve 31, a flat portion 35 is formed which has a circular shape centered on the valve shaft axis O <b> 2 and comes into contact with one end surface of the valve body receiving member 32. A concentric fitting concave portion 36 that fits with the fitting convex portions 34, 34 is formed in the flat portion 35. The inner diameter of the fitting recess 36 is slightly larger than the arc diameter of the fitting protrusions 34, 34.

  An arcuate guide groove 37 is formed in the flat portion 35 and the fitting recess 36 along the direction orthogonal to the penetrating direction of the through hole 30. The guide groove 37 is formed in an arc shape that is closest to the center of the ball valve 31 at the center of the flat portion 35. In the guide groove 37, the tip of the connecting pin 60 of the valve stem 4 is loosely fitted. Further, a gap U (FIG. 1) is formed between the other end surfaces of the valve body receiving members 32 and 33 and the inner wall of the base body portion 9 of the first valve box 7.

"Valve 4, 5"
The valve stem 4 is rotatably supported on the inner peripheral surface of the valve stem support portion 11 via a bearing 38. A seal member 39 is interposed between the bearing 38 and the valve stem 4. The valve stem 4 has a connection pin 60 formed at one end and a lever mounting shaft portion 40 formed at the other end. The valve stem 5 is also rotatably supported on the inner peripheral surface of the valve stem support 12 via a bearing 38, and a seal member 39 is interposed between the bearing 38 and the valve stem 5. A connecting pin 60 is formed at one end of the valve stem 5 in the same manner as the valve stem 4. The other end side of the valve stem 5 is closed by a lid member 42 fastened to the flange portion 14 with a bolt 41.

"Intermediate opening holding mechanism 43"
Normally, since the ball valve is used in a fully open state or a fully closed state, the valve body is not structured to be held at an intermediate opening. On the other hand, the non-sliding valve 1 of the present embodiment includes an intermediate opening degree holding mechanism 43 that can hold the valve element 3 in an intermediate opening state. The intermediate opening holding mechanism 43 includes a flat spring 45 as a spring member interposed between the first valve box 7 and the operation lever 44, and the valve stem 4 in the direction of the valve stem axis O2 of the lever 44 with respect to the valve stem 4. And a spring adjusting portion 46 that adjusts the elastic restoring force of the flat spring 45 by displacing the mounting position.

  The lever mounting shaft portion 40 has a cylindrical portion having a diameter smaller than the diameter of the valve stem 4 supported by the bearing 38 when viewed in the direction of the valve stem axis O2, and four sides are square so that peripheral surfaces remain at the four corners. It consists of a cross-sectional shape cut into a shape. A thrust receiving member 48 is fastened to the flange portion 13 of the first valve box 7 by a bolt 47, and the lever mounting shaft portion 40 projects outside through a through hole of the thrust receiving member 48. The flat spring 45 is attached so as to be fitted on the lever attachment shaft portion 40. The lever 44 is formed on one end side with a through hole that allows the lever mounting shaft portion 40 to move in the direction of the valve stem axis O2 and loosely fit around the valve stem axis O2, and to open on the other end side. The cylindrical body portion 49 and the operation arm portion 50 extending radially outward from the outer peripheral surface of the cylindrical body portion 49 are provided. The lever 44 is adjusted via a bolt receiving plate 51 disposed in the cylindrical body portion 49 so as to open a gap S with the end surface of the lever mounting shaft portion 40 in a state where the lever mounting shaft portion 40 is passed through the through hole. The bolt 52 is screwed onto the end surface of the lever mounting shaft portion 40. The bolt receiving plate 51 and the adjusting bolt 52 constitute the spring adjusting portion 46.

  As described above, the flat spring 45 disposed between the thrust receiving member 48 (first valve box 7) and the cylindrical body portion 49 (lever 44) is compressed and deformed, and the elastic restoring force is applied to the flat spring 45, the lever 44, and the like. (There is also a frictional force acting between the annular step surface around the lever mounting shaft portion 40 of the valve stem 4 and the thrust receiving member 48), and a static torque is applied to the valve stem 4. Will occur. Thereby, even if the valve body 3 is affected by the water flow, the valve body 3 can be maintained in an arbitrary intermediate opening state. Further, the elastic restoring force (rotational operation force of the lever 44) of the flat spring 45 can be easily adjusted by the tightening amount of the adjusting bolt 52. The spring member may be a coil spring, for example, but it is preferable to use a flat spring as in this embodiment as a small spring member excellent in fine adjustment of the elastic restoring force.

  As shown in FIG. 3, a part of the flange portion 13 protrudes radially outward, and a stopper 55 is attached to the protruding portion with a bolt 53 and a nut 54. When the base part of the operation arm part 50 contacts the stopper 55, the valve body 3 is fully opened.

  The non-sliding valve 1 includes a connecting mechanism 56 for connecting the valve body 3 to the valve rods 4 and 5 so that the valve body 3 can be rotated and moved linearly in a direction orthogonal to the valve shaft axis O2, and the valve body 3 is connected to the valve rod 3 A biasing member 57 that biases to a neutral position P1 in a direction orthogonal to the axis O2 is provided between the valve box 2 and the valve body 3, and resists the biasing force of the biasing member 57 when the valve body 3 is closed. And a pressing mechanism 58 that presses the valve body 3 against the valve seat 18.

"Coupling mechanism 56"
The connecting mechanism 56 is formed in the valve body receiving members 32 and 33 along the direction orthogonal to the valve stem axis O2 and in the valve stems 4 and 5, respectively, and can be rotated together. And a connecting pin 60 that is loosely fitted in the connecting groove 59. The connecting pin 60 has a cross-sectional shape having a pair of plane portions parallel to each other on each end side of the valve rods 4 and 5. The connection pin 60 can be rotated together with the valve body 3 by pressing the groove side surface of the connection groove 59 to the connection groove 59 formed in the valve body receiving members 32 and 33 respectively. It is loosely fitted so as to be movable along the groove 59. The distal end of the connecting pin 60 passes through the connecting groove 59 and is loosely fitted so as to be able to rotate along the guide groove 37 of the ball valve 31 and linearly move in the direction perpendicular to the valve stem axis O2. As a result, the valve stems 4 and 5, the valve body receiving members 32 and 33, and the ball valve 31 can rotate integrally, and the valve body receiving members 32 and 33 and the ball valve 31 are valved relative to the valve rods 4 and 5. It is configured to be movable in a direction orthogonal to the rod axis O2.

"Biasing member 57"
The urging member 57 includes a spring member disposed inside the connection groove 59. In this embodiment, the spring member is a compression coil spring 61. A pair of peripheral surface portions of the connecting pin 60 is formed with a bottomed spring accommodating hole 62. The pair of compression coil springs 61 </ b> A and 61 </ b> B are accommodated in a compressed state in each spring accommodation hole 62 such that one end abuts against the bottom of the spring accommodation hole 62 and the other end abuts against the groove end surface of the coupling groove 59. Due to the balance between the urging force of the compression coil spring 61A and the urging force of the compression coil spring 61B, the valve body 3 is always urged so as to be positioned at the neutral position P1. The neutral position P1 is a position on the valve stem axis O2. When the valve body 3 is in the neutral position P1, a gap T is formed between the valve body 3 and the valve seat 18 as shown in FIG.

"Pressing mechanism 58"
The pressing mechanism 58 includes a position adjusting bolt 63 that is screwed to the valve box 2 so that the position can be adjusted, and a boss portion 64 that protrudes from each of the valve body receiving members 32 and 33 and contacts the tip of the position adjusting bolt 63. It is prepared for. The boss portion 64 protrudes on the outer peripheral surfaces of the valve body receiving members 32 and 33 in a gently curved surface shape. A pair of position adjusting bolts 63 are screwed into the valve box 2 (the first valve box 7 and the second valve box 8) so as to correspond to the pair of boss portions 64. A groove for inserting a tool (such as a flat-blade screwdriver) is formed on the bolt head end face of the position adjusting bolt 63 facing the outside of the second valve box 8. By adjusting the screwing position of the position adjusting bolt 63 with a tool, the force with which the tip of the position adjusting bolt 63 presses the boss portion 64, that is, the force with which the valve body 3 is pressed against the valve seat 18 is adjusted. A seal member 65 is interposed between the position adjustment bolt 63 and the valve box 2.

"Action"
As shown in FIGS. 1 and 4A, when the non-sliding valve 1 is in the open state, the valve body 3 is in the neutral position P1 due to the balance between the urging force of the compression coil spring 61A and the urging force of the compression coil spring 61B. Is located. In this state, the tip of the position adjusting bolt 63 and the boss portion 64 are not in contact with each other, and a gap T is formed between the valve body 3 and the valve seat 18. This gap T continues to be formed until the non-sliding valve 1 is almost fully closed and the tip of the position adjusting bolt 63 presses the boss 64. As a result, the valve body 3 does not slide on the valve seat 18 in accordance with the opening / closing operation of the non-sliding valve 1, so that the wear of the valve seat 18 can be reduced, and the maintenance frequency and replacement frequency of the valve seat 18 are reduced. it can.

  2 and 4 (b), when the lever 44 is operated to rotate the valve body 3 by 90 ° from the fully open state, the boss portion 64 abuts against the tip of the position adjusting bolt 63 and is pressed downward. Thus, the valve body 3 moves downward from the neutral position P1 against the urging force of the compression coil spring 61A. And if it moves below only the distance V, the valve body 3 will be pressed against the valve seat 18, and the non-sliding valve 1 will be in a fully closed state.

  In addition, the elastic restoring force of the flat spring 45 acts between the valve box 2 and the valve body 3 in any of the fully open state, the fully closed state, and any intermediate opening state of the non-sliding valve 1. The opening state of the valve body 3 can be reliably maintained regardless of the influence of the water flow.

"Assembly method"
The method of assembling the valve body 3 and the valve stems 4 and 5 to the valve box 2 involves the following steps.
(1) The valve stem 4 is assembled by assembling the valve stem 4, the valve body receiving member 32, and the compression coil springs 61A and 61B. Similarly, the valve stem 5 is assembled by assembling the valve stem 5, the valve body receiving member 33, and the compression coil springs 61A and 61B. The bearing 38 is fitted in the first valve box 7.
(2) The pair of valve stem assemblies are inserted into the first valve box 7 through the ball valve insertion opening 15 and the valve stems 4 and 5 are supported by the valve stem support portions 11 and 12, respectively.

(3) The ball valve 31 is inserted into the first valve box 7 through the ball valve insertion opening 15 and assembled with the pair of valve stem assemblies. Specifically, first, each valve stem assembly is once pushed outward in the direction of the valve stem axis O2 so that the gap U shown in FIG. Then, the valve stem axis of each valve stem assembly is such that the relative movement direction between the valve stems 4 and 5 and the valve body receiving members 32 and 33 is the direction of the flow path axis O1 as shown in FIGS. The phase around O2 is matched. As a result, when the ball valve 31 is inserted into the first valve box 7, the tip of the connecting pin 60 smoothly fits into the guide groove 37. Then, the loose fitting is performed as it is, and the fitting concave portion 36 of the ball valve 31 and the fitting convex portions 34 and 34 of the valve body receiving members 32 and 33 are unevenly fitted.
(4) The second valve box 8 is assembled to the first valve box 7, and the position adjusting bolt 63 is attached.

  As described above, the connecting mechanism 56 that allows the valve body 3 to rotate with respect to the valve stems 4 and 5 and is linearly movable in the direction orthogonal to the valve stem axis O2, and the valve body 3 as the valve stem axis. A biasing member 57 that biases to a neutral position P1 in a direction orthogonal to O2 is provided between the valve box 2 and the valve body 3, and resists the biasing force of the biasing member 57 when the valve body 3 is closed. According to the non-sliding valve 1 including the pressing mechanism 58 that presses the valve body 3 against the valve seat 18, the following effects are exhibited.

  As a connecting mechanism 56 between the valve body 3 and the valve rods 4 and 5, the valve body 3 is connected to the valve rods 4 and 5 so that the valve body 3 can be rotated and linearly movable in a direction orthogonal to the valve shaft axis O2. The pressing mechanism 58 that presses 3 against the valve seat 18 is provided between the valve box 2 and the valve body 3. As a result, the connecting mechanism 56 between the valve body 3 and the valve rods 4 and 5 can be a simple structure. As in the prior art, one valve rod is connected to the valve body so as to be able to transmit rotation, and the other valve rod is connected to the valve body. There is no need to connect them so that rotation cannot be transmitted. In addition, since it is not necessary to rotate the two valve rods separately, the valve can be made smaller and the opening / closing operation procedure is simplified.

  The valve body 3 includes a ball valve 31 and a pair of valve body receiving members 32 and 33 assembled to the ball valve 31 and the valve rods 4 and 5 so as to rotate integrally with the ball valve 31. The first valve box 7 having the ball valve insertion opening 15, the second valve box 8 in which one flow path end opening 28 is formed and is fitted into the inner peripheral wall of the ball valve insertion opening 15, The ball valve 31 and the valve body receiving members 32 and 33 can be separately put into the first valve box 7 from the ball valve insertion opening 15 and assembled inside the first valve box 7. . Therefore, the diameter of the ball valve insertion opening 15 can be suppressed to be slightly larger than the diameter of the ball valve 31, and the degree of freedom in structural design of the first valve box 7 and the second valve box 8 is expanded.

  Further, as the connecting mechanism 56, the valve body receiving members 32 and 33 are formed in the connecting groove 59 formed along the direction orthogonal to the valve stem axis O2 and in the valve stems 4 and 5, and can be rotated together. The biasing member 57 is accommodated in the spring accommodating hole 62 of the coupling pin 60, and one end thereof is at the bottom of the spring accommodating hole 62. If the spring member (compression coil spring 61) is in contact and the other end is in contact with the groove end surface of the connecting groove 59, the assembly structure of the spring member is simplified.

  Further, as the pressing mechanism 58, a position adjusting bolt 63 that is screwed to the valve box 2 so that the position can be adjusted, a boss portion 64 that protrudes from the valve body receiving members 32 and 33 and contacts the tip of the position adjusting bolt 63, If it is set as the structure provided, pressing force of the valve body 3 to the valve seat 18 can be adjusted easily.

  Furthermore, the other flow path end opening 20 is formed and provided with the valve seat pressing member 19 which is attached to the first valve box 7 and prevents the valve seat 18 from coming off, so that the valve seat 18 can be easily assembled. Can be assembled to the valve box 2.

  The preferred embodiment of the present invention has been described above. In the embodiment, the structure is such that the valve rods 4 and 5 are rotated by the rotation operation of the lever 44 around the valve shaft axis O2. However, not only the lever 44 but also the valve rods 4 and 5 are rotated via a gear mechanism such as a bevel gear by a rotating handle (rotating cap) that rotates around a vertical axis (vertical axis in FIG. 1). It may be a structure to be moved. In addition to the manual valve, the valve rods 4 and 5 may be rotated as an automatic valve such as an electric valve. Note that the intermediate opening degree holding mechanism 43 may be omitted when a gear mechanism is provided or when an electric valve is used.

DESCRIPTION OF SYMBOLS 1 Non-sliding valve 2 Valve box 3 Valve body 4,5 Valve rod 6 Flow path 7 1st valve box 8 2nd valve box 11, 12 Valve rod support part 15 Ball valve insertion opening 18 Valve seat 19 Valve seat pressing member 31 Ball valves 32, 33 Valve body receiving member 34 Fitting convex portion 35 Flat portion 36 Fitting concave portion 37 Guide groove 43 Intermediate opening degree holding mechanism 45 Sarah spring 46 Spring adjusting portion 48 Thrust receiving member 56 Connecting mechanism 57 Energizing member 58 Pressing mechanism 59 Connecting groove 60 Connecting pin 61 Compression coil spring 62 Spring accommodating hole 63 Position adjusting bolt 64 Boss portion O1 Flow axis O2 Valve stem axis P1 Neutral position

Claims (6)

A non-sliding valve comprising: a valve box provided with a valve seat; a valve body that opens and closes a flow path in the valve box; and a valve rod that rotates the valve body,
A coupling mechanism that couples the valve body to the valve stem so as to be able to rotate and linearly move in a direction orthogonal to the valve stem axis;
A biasing member that biases the valve body to a neutral position in the orthogonal direction;
A pressing mechanism which is provided between the valve box and the valve body and presses the valve body against the valve seat against the biasing force of the biasing member when the valve body is closed;
With
The valve body includes a ball valve, and a pair of valve body receiving members assembled to the ball valve and the valve rod so as to rotate integrally with the ball valve,
The valve box includes: a first valve box having a ball valve insertion opening; and a second valve box in which one flow path end opening is formed and fitted into an inner peripheral wall of the ball valve insertion opening. A non-sliding valve characterized by comprising. The connection mechanism includes a connection groove formed in the valve body receiving member along the orthogonal direction, and a connection groove formed in the valve stem and having a cross-sectional shape that can be rotated together and loosely fitted in the connection groove. A pin, and
The urging member is a spring member that is housed in a spring housing hole of the connecting pin, has one end abutting on the bottom of the spring housing hole, and the other end abutting on the groove end surface of the coupling groove. The non-sliding valve according to claim 1.   The pressing mechanism includes: a position adjusting bolt that is screwed to the valve box so that the position can be adjusted; and a boss portion that protrudes from the valve body receiving member and abuts against a tip of the position adjusting bolt. The non-sliding valve according to claim 1 or 2, characterized in that   4. The valve seat pressing member according to claim 1, further comprising a valve seat pressing member that is formed with the other flow path end opening and that is attached to the first valve box and prevents the valve seat from coming off. 5. A non-sliding valve according to claim 1. A non-sliding valve assembling method comprising: a valve box provided with a valve seat; a valve body that opens and closes a flow path in the valve box; and a valve rod that rotates the valve body,
The non-sliding valve is
A coupling mechanism that couples the valve body to the valve stem so as to be able to rotate and linearly move in a direction orthogonal to the valve stem axis;
A biasing member that biases the valve body to a neutral position in the orthogonal direction;
A pressing mechanism which is provided between the valve box and the valve body and presses the valve body against the valve seat against the biasing force of the biasing member when the valve body is closed;
With
The valve body includes a ball valve, and a pair of valve body receiving members assembled to the ball valve and the valve rod so as to rotate integrally with the ball valve,
The valve box includes: a first valve box having a ball valve insertion opening; and a second valve box in which one flow path end opening is formed and fitted into an inner peripheral wall of the ball valve insertion opening. Prepared,
The connection mechanism includes a connection groove formed in the valve body receiving member along the orthogonal direction, and a connection groove formed in the valve stem and having a cross-sectional shape that can be rotated together and loosely fitted in the connection groove. A pin, and
The biasing member is a spring member that is accommodated in the spring accommodation hole of the connection pin, one end abuts on the bottom of the spring accommodation hole, and the other end abuts on the groove end surface of the connection groove,
A first step of assembling the valve stem, the valve body receiving member, and the spring member to create a valve stem assembly;
A second step of placing the valve stem assembly into the first valve box;
A third step of assembling the ball valve into the first valve box through the ball valve insertion opening and assembling with the valve stem assembly;
A fourth step of assembling the second valve box to the first valve box;
A method of assembling the non-sliding valve, wherein the non-sliding valves are performed in that order. In the valve stem assembly, the tip of the connecting pin protrudes from the valve body receiving member through the connecting groove,
On the peripheral surface of the ball valve, a guide groove is formed which is formed along the orthogonal direction and into which the tip of the connecting pin is loosely fitted,
In the third step, the ball valve is placed inside the first valve box while loosely fitting the tip of the connecting pin in the guide groove, and the ball valve and the valve body receiving member are fitted in an uneven manner. The non-sliding valve assembling method according to claim 5.

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