JP6696088B2 - Non-sliding valve and its mounting method - Google Patents

Description

  The present invention relates to a non-slide valve and a method of assembling the same.

  As a valve for the purpose of reducing 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 in non-contact state during other opening / closing operation strokes. There is a valve, and a conventional example thereof is disclosed in Patent Document 1. In Patent Document 1, a first shaft (one valve rod) is rotatably transmitted to a valve body, while a second shaft (the other valve rod) is rotatably transmitted to a second shaft. A ball valve in which a pressing portion is provided and a pressed portion that is pressed by the pressing portion is provided in the valve body is described. 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. To the seat member (valve seat).

JP, 2008-95811, A

  According to the technique of Patent Document 1, one valve rod is connected to the valve body so that rotation can be transmitted, and the other valve rod is connected so that rotation cannot be transmitted. Therefore, the connection structure between the valve body and the valve rod is complicated. There is a problem that becomes. Further, since the two valve rods need to be rotated, two rotary operation mechanisms such as levers are required, the valve becomes large and the opening / closing operation procedure becomes complicated.

  The present invention was created in order to solve such a problem, the connection structure of the valve body and the valve rod is simplified, and the valve body can be opened and closed without sliding by a simple rotation operation of the valve rod. An object of the present invention is to provide a non-slide valve and an assembling method thereof.

In order to solve the above-mentioned problems, the present invention comprises 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, which connects the valve element to the valve rod so as to be linearly movable in a direction orthogonal to the axis of the valve rod, and the valve element to a neutral position in the orthogonal direction. A pressing mechanism that is provided between a biasing member that biases the valve body and the valve body, and that pushes the valve body against the valve seat against the biasing force of the biasing member when the valve body closes. 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, and the valve box includes a ball valve. A first valve box having an insertion opening; and a second valve box in which one flow path end opening is formed and which is fitted into an inner peripheral wall of the ball valve insertion opening, the connection mechanism comprising: A connecting groove formed in the valve body receiving member along the orthogonal direction; and a connecting pin formed in the valve rod and having a cross-sectional shape capable of being rotated together and loosely fitted in the connecting groove, The urging member is a spring member housed in a spring accommodating hole of the connecting pin, one end of which abuts a hole bottom portion of the spring accommodating hole and the other end of which abuts a groove end surface of the connecting groove. ..

The present invention, as a connecting mechanism for a valve body and a valve stem, is configured such that the valve body is coupled to the valve stem so as to be linearly movable in a direction orthogonal to the valve stem axis, and The pressing mechanism that presses against the valve seat is provided between the valve body and the valve body, not between the valve body and the valve rod as in Patent Document 1. Thereby, the connecting mechanism of the valve element and the valve rod has a simple structure, and as in Patent Document 1, one valve rod is connected to the valve element so that rotation can be transmitted, and the other valve rod cannot rotate. No need to connect to. Further, since it is not necessary to separately rotate the two valve rods, the valve can be made smaller and the opening / closing operation procedure can be simplified. Then, the ball valve and the valve body receiving member can be separately put into the first valve box through the ball valve insertion opening and assembled inside the first valve box. Therefore, 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 the structural design of the first valve box and the second valve box is increased. Further, the structure of the connecting mechanism and the assembly structure of the spring member can be simplified.

Further, the present invention is a non-sliding valve 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 coupling mechanism that couples the valve body with the valve rod so as to be linearly movable in a direction orthogonal to the axis of the valve rod, and a biasing force that biases the valve body to a neutral position in the orthogonal direction. A member, 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 biasing force of the biasing 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, and the valve box has a ball valve insertion opening. And a second valve box in which one of the flow path end openings is formed and which is fitted into the inner peripheral wall of the ball valve insertion opening is provided, and the pressing mechanism is positionally adjustable. It is characterized by comprising a position adjusting bolt screwed into the valve box, and a boss portion projecting from the valve body receiving member and abutting against the tip of the position adjusting bolt.

According to the present invention, the valve body-valve rod connecting mechanism is configured such that the valve body is connected to the valve rod such that the valve body can be rotated with the valve rod and is linearly movable in a direction orthogonal to the axis of the valve rod. The pressing mechanism for pressing the body against the valve seat is provided between the valve body and the valve body, not between the valve body and the valve rod as in Patent Document 1. Thereby, the connecting mechanism of the valve element and the valve rod has a simple structure, and as in Patent Document 1, one valve rod is connected to the valve element so that rotation can be transmitted, and the other valve rod cannot rotate. No need to connect to. Further, since it is not necessary to separately rotate the two valve rods, the valve can be made smaller and the opening / closing operation procedure can be simplified. Then, the ball valve and the valve body receiving member can be separately put into the first valve box through the ball valve insertion opening and assembled inside the first valve box. Therefore, 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 the structural design of the first valve box and the second valve box is increased. Further, since the position adjusting bolt is screwed into the valve box so that the position can be adjusted, the pressing force of the valve body against 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 assembly work.

  Further, the present invention relates to a method for assembling a non-sliding valve 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. The non-sliding valve includes a coupling mechanism that couples the valve body to the valve rod so as to be linearly movable in a direction orthogonal to the valve rod axis, and the valve body to the orthogonal mechanism. A biasing member that biases the valve body to a neutral position in a direction, and the valve body is provided between the valve box and the valve body and resists the biasing force of the biasing member when the valve body closes. A pressing mechanism that presses against a seat, 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 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 which is fitted into an inner peripheral wall of the ball valve insertion opening. The connection mechanism has a connection groove formed in the valve body receiving member along the orthogonal direction, and a connection groove formed in the valve rod and having a cross-sectional shape capable of being rotated together and loosely fitted in the connection groove. A pin, wherein the biasing member is a spring member housed in a spring housing hole of the connecting pin, one end of which abuts a hole bottom portion of the spring housing hole and the other end of which abuts a groove end surface of the connecting groove. A first step of assembling the valve stem, the valve body receiving member and the spring member to form a valve stem assembly; a second step of inserting the valve stem assembly into the first valve box; Performing a third step of assembling the valve stem assembly into the first valve box through the ball valve insertion opening and a fourth step of assembling the second valve box into the first valve box in that order. Is characterized by.

  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. Therefore, the degree of freedom in the structural design of the first valve box and the second valve box is expanded.

  According to the present invention, in the valve rod assembly, a tip of the connecting pin penetrates through the connecting groove and protrudes from the valve body receiving member, and is formed on a 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, and in the third step, the ball valve is inserted into the first valve box while the tip of the connecting pin is loosely fitted in the guide groove, It is characterized in that the ball valve and the valve body receiving member are fitted in a recess and projection.

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

  ADVANTAGE OF THE INVENTION According to this invention, the connection structure of a valve body and a valve stem is simplified, and a valve body can be opened and closed without sliding by simple rotation operation of a valve stem. Further, 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 the 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-slide valve which concerns on this invention. It is a sectional side view which shows the fully closed state of the non-slide valve which concerns on this invention. It is an exploded perspective view of a non-slide valve concerning the present invention. It is explanatory drawing of a pressing mechanism and a compression coil spring seen from the valve stem axial direction, (a) shows a non-slide valve in a fully open state, (b) shows a case in which the non-slip valve is in 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. , Are provided.

"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 for accommodating the valve body 3, a flange portion 10 formed on the other side of the flow passage 6 around the flow passage axis O1 and connected to a mating pipe flange, and a flow passage. A cylindrical valve rod support portion 11 that extends around a valve rod axis O2 that is orthogonal to the road axis O1 and supports one valve rod 4 and a valve rod axis O2 that extends And a cylindrical valve rod support portion 12 that supports the other valve rod 5. A flange portion 13 for attaching a thrust receiving member 48, which will be described later, is formed at the tip of the valve rod support portion 11, and a flange portion 14 for attaching the lid member 42 is formed at the tip of the valve rod support portion 12. ing. The first valve box 7 has a ball valve insertion opening 15 formed on one side of the flow path 6 centering on the flow path axis O1 and a flow path axis O1 on the other side of the flow path 6. And a female screw portion 16 formed as. The diameter L2 of the ball valve insertion opening 15 is smaller than the distance L3 between the outer ends of the pair of valve body receiving members 32 and 33 described later and larger than the diameter L1 of the ball valve 31.

  An annular valve seat fitting groove portion 17 centered 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 Teflon (registered trademark) resin material containing a core metal, and is inserted into the valve seat fitting groove portion 17 by being elastically restored by being passed through the female screw portion 16 in a deformed state. 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, and has a body portion 21 in which a male screw portion that is screwed into the female screw portion 16 is formed and one end of which abuts on the valve seat 18. And a flange portion 22 that 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, and has a shape including a collar portion 22. A seal member 23 is provided between the first valve box 7 and the collar portion 22. The valve seat pressing member 19 supports the valve seat 18 by contacting one end of the body portion 21 with the valve seat 18, and prevents the valve seat 18 from coming off from the first valve housing 7. A plurality of recesses 24 are formed in the circumferential direction on the outer periphery of the flange portion 22, and the bolt head of the rotation stop bolt 25 screwed into the first valve box 7 is hooked on any one of the recesses 24 to form a valve seat. The pressing 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 a flange portion 26 which is formed on one side of the flow passage 6 with the flow path axis O1 as the center and is connected to the piping flange on the other side. And a fitting portion 27 for fitting. 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) with the fitting portion 27 fitted in the inner peripheral wall of the ball valve insertion opening 15. A seal member 29 is provided between the inner peripheral wall of the ball valve insertion opening 15 and the fitting portion 27.

"Valve 3"
The valve body 3 has a spherical ball valve 31 having a through hole 30 formed through the center thereof, and a pair of valve body receiving members 32 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 to each other with the ball valve 31 interposed therebetween. The valve body receiving member 32 has a short columnar shape centered on the valve stem axis O2, and is formed with a connecting groove 59 penetrating in the valve stem axis O2 direction so that the connecting pin 60 of the valve stem 4 can be inserted. ing. On both sides of the connecting groove 59 on one end surface of the valve body receiving member 32, substantially half-moon-shaped fitting convex portions 34, 34 that draw an arc around the valve stem axis O2 when viewed in the direction of the valve stem axis O2. Is projected. On the other hand, on the outer peripheral surface of the ball valve 31, a flat surface portion 35 having a circular shape centered on the valve rod axis O2 and abutting against one end surface of the valve body receiving member 32 is formed. The flat surface portion 35 is formed with a concentric fitting concave portion 36 that fits with the fitting convex portions 34, 34. The inner diameter of the fitting concave portion 36 is slightly larger than the diameter of the arc of the fitting convex portions 34, 34.

  An arcuate guide groove 37 is formed in the flat surface portion 35 and the fitting concave portion 36 along a 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 surface portion 35. The tip of the connecting pin 60 of the valve rod 4 is loosely fitted in the guide groove 37. A gap U (FIG. 1) is formed between the other end surface of each of the valve element receiving members 32 and 33 and the inner wall of the base portion 9 of the first valve box 7.

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

"Intermediate opening holding mechanism 43"
Normally, the ball valve is used in a fully open state or a fully closed state, so the valve body is not structured to be held at an intermediate opening degree. On the other hand, the non-slide valve 1 of the present embodiment includes the intermediate opening holding mechanism 43 that can hold the valve body 3 in the intermediate opening state. The intermediate opening degree holding mechanism 43 has a flat spring 45 as a spring member provided between the first valve housing 7 and the operating lever 44, and a lever rod 44 with respect to the valve rod 4 in the valve rod axis O2 direction. 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 rod 4 supported by the bearing 38 when viewed in the direction of the valve rod axis O2, and the four surfaces are square so that the peripheral surfaces remain at the four corners. It has a cross-sectional shape that is cut into a shape. A thrust receiving member 48 is fastened to the flange portion 13 of the first valve casing 7 with a bolt 47, and the lever mounting shaft portion 40 protrudes outside through a through hole of the thrust receiving member 48. The flat spring 45 is attached to the lever attachment shaft portion 40 so as to be externally fitted. The lever 44 has a through hole formed at one end side for allowing the lever mounting shaft portion 40 to move freely in the direction of the valve stem axis O2 and integrally rotatable around the valve stem axis O2, and has an opening formed at the other end side. And a manipulation arm portion 50 extending radially outward from the outer peripheral surface of the barrel body portion 49. The lever 44 is adjusted by a bolt receiving plate 51 arranged in the barrel 49 so that a gap S is formed between the lever mounting shaft 40 and the end surface of the lever mounting shaft 40 while the lever mounting shaft 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 form 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 barrel body 49 (lever 44) is compressed and deformed, and the elastic restoring force of the flat spring 45 and the lever 44 is generated. And also acts as a frictional force acting between the thrust receiving member 48 and the annular step surface around the lever mounting shaft portion 40 of the valve rod 4, and a static torque on the valve rod 4. Occurs. As a result, even if the valve body 3 is affected by the water flow, the valve body 3 can be held in an arbitrary intermediate opening state. Further, the elastic restoring force of the flat spring 45 (the rotational operation force of the lever 44) can be easily adjusted by the tightening amount of the adjusting bolt 52. The spring member may be, for example, a coil spring, but as a small spring member excellent in fine adjustment of elastic restoring force, it is preferable to use a flat spring as in the present embodiment.

  As shown in FIG. 3, a part of the flange portion 13 is provided so as to project radially outward, and a stopper 55 is attached to the protruding portion with a bolt 53 and a nut 54. When the root portion of the operation arm portion 50 comes into contact with the stopper 55, the valve body 3 is fully opened.

  The non-slide valve 1 includes a connecting mechanism 56 that connects the valve body 3 to the valve rods 4 and 5 so as to be linearly movable in a direction orthogonal to the valve rod axis O2, and the valve rod 3 to the valve rod 3. A biasing member 57 that biases the neutral position P1 in a direction orthogonal to the axis O2 and a biasing member 57 that 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 for pressing 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 connecting groove 59 formed along the direction orthogonal to the valve stem axis O2, and in the valve rods 4 and 5, respectively, and has a cross-sectional shape capable of rotating together. And a connecting pin 60 which is loosely fitted in the connecting groove 59. The connecting pin 60 has a cross-sectional shape having a pair of flat portions parallel to each other on one end side of the valve rods 4 and 5. The connecting pin 60 is capable of rotating along with the valve body 3 by the flat surface portion of the connecting pin 60 pressing the groove side surface of the connecting groove 59 into the connecting groove 59 formed in the valve body receiving members 32 and 33, respectively, and is connected. It is loosely fitted so as to be movable along the groove 59. The tip of the connecting pin 60 penetrates the connecting groove 59 and is loosely fitted to the guide groove 37 of the ball valve 31 as described above so as to be linearly movable in the direction orthogonal to the valve rod axis O2. As a result, the valve rods 4, 5 and the valve body receiving members 32, 33 and the ball valve 31 can rotate integrally with each other, and the valve body receiving members 32, 33 and the ball valve 31 act as valves for the valve rods 4, 5. It is configured to be movable in a direction orthogonal to the rod axis O2.

"Biasing member 57"
The biasing member 57 is a spring member arranged inside the connection groove 59. In this embodiment, the spring member is the compression coil spring 61. A bottomed spring accommodating hole 62 is formed in each of the pair of peripheral surface portions of the connecting pin 60. The pair of compression coil springs 61A and 61B are accommodated in each spring accommodation hole 62 in a compressed state such that one end abuts on the hole bottom portion of the spring accommodation hole 62 and the other end abuts on the groove end surface of the coupling groove 59. Due to the balance between the biasing force of the compression coil spring 61A and the biasing force of the compression coil spring 61B, the valve body 3 is always biased so as to be located at the neutral position P1. The neutral position P1 is a position on the valve stem axis O2. When the valve body 3 is at 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 screwed to the valve box 2 in a positionally adjustable manner, and a boss portion 64 protruding from each of the valve body receiving members 32 and 33 and abutting on the tip of the position adjusting bolt 63. It is equipped with. The boss portion 64 is provided on the outer peripheral surface of each of the valve body receiving members 32 and 33 so as to project in a gently curved 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 surface 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 provided between the position adjusting 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 biasing force of the compression coil spring 61A and the biasing force of the compression coil spring 61B. Is located in. 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. The gap T continues to be formed until the non-slide valve 1 is almost completely closed and the tip of the position adjusting bolt 63 presses the boss portion 64. As a result, since the valve body 3 does not slide on the valve seat 18 due to the opening / closing operation of the non-sliding valve 1, the wear of the valve seat 18 can be reduced and the frequency of maintenance and replacement of the valve seat 18 can be reduced. it can.

  2 and 4 (b), when the lever 44 is operated to rotate the valve body 3 by 90 ° from the fully opened state, the boss portion 64 abuts the tip of the position adjusting bolt 63 and is pressed downward at that time. As a result, the valve body 3 moves downward from the neutral position P1 against the biasing force of the compression coil spring 61A. Then, when moving downward by the distance V, the valve body 3 is pressed against the valve seat 18, and the non-slidable valve 1 is brought into a fully closed state.

  In addition, since the elastic restoring force of the flat spring 45 acts between the valve body 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-slide valve 1. Therefore, the degree of opening 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 rods 4, 5 to the valve box 2 involves the following steps.
(1) The valve rod 4, the valve body receiving member 32, and the compression coil springs 61A and 61B are assembled to form a valve rod assembly. Similarly, the valve rod 5, the valve element receiving member 33, and the compression coil springs 61A and 61B are assembled to form a valve rod assembly. The bearing 38 is fitted in the first valve box 7.
(2) The pair of valve rod assemblies are inserted into the first valve housing 7 through the ball valve insertion opening 15 so that the valve rods 4 and 5 are supported by the valve rod support portions 11 and 12, respectively.

(3) The ball valve 31 is put into the first valve box 7 through the ball valve insertion opening 15 and assembled with the pair of valve rod assemblies. Specifically, first, each valve stem assembly is temporarily pushed outward in the direction of the valve stem axis O2 so that the gap U shown in FIG. 1 becomes small. The valve rod shaft centers of the valve rod assemblies are arranged so that the relative movement directions of the valve rods 4 and 5 and the valve body receiving members 32 and 33 are in the direction of the flow passage axis O1 as shown in FIGS. Match the phase around O2. As a result, when the ball valve 31 is placed inside the first valve box 7, the tip of the connecting pin 60 smoothly fits in the guide groove 37. Then, the fitting recesses 36 of the ball valve 31 and the fitting projections 34, 34 of the valve body receiving members 32, 33 are fitted into the recesses and projections by loose fitting.
(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 connects the valve body 3 to the valve rods 4 and 5 and is linearly movable in the direction orthogonal to the valve stem axis O2, and the valve body 3 is the valve stem axis. A biasing member 57 that biases the neutral position P1 in the direction orthogonal to O2, and the valve body 2 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. The non-slide valve 1 including the pressing mechanism 58 that presses the valve body 3 against the valve seat 18 has the following effects.

  As a connecting mechanism 56 for connecting the valve element 3 and the valve rods 4 and 5, the valve element 3 is connected to the valve rods 4 and 5 so as to be able to follow the valve element 3 and to be linearly movable in a direction orthogonal to the valve rod axis O2. The pressing mechanism 58 for pressing the valve 3 against the valve seat 18 was provided between the valve box 2 and the valve body 3. As a result, the connecting mechanism 56 for connecting the valve element 3 and the valve rods 4, 5 has a simple structure, and one valve rod is rotatably connected to the valve element and the other valve rod is connected to the valve element as in the conventional case. It is not necessary to connect them so that rotation cannot be transmitted. Further, since it is not necessary to separately rotate the two valve rods, the valve can be made smaller and the opening / closing operation procedure can be 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. Includes a first valve casing 7 having a ball valve insertion opening 15, a second valve casing 8 having one flow path end opening 28 formed therein and fitted in an inner peripheral wall of the ball valve insertion opening 15. With the configuration including, the ball valve 31 and the valve body receiving members 32 and 33 can be separately inserted 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 the structural design of the first valve box 7 and the second valve box 8 is increased.

  Further, as the connecting mechanism 56, a connecting groove 59 formed in the valve body receiving members 32, 33 along a direction orthogonal to the valve shaft axis O2, and a sectional shape formed in the valve shafts 4, 5 and capable of rotating together. And the biasing member 57 is housed in the spring accommodating hole 62 of the connecting pin 60 and has one end at the bottom of the spring accommodating hole 62. If a spring member (compression coil spring 61) that abuts and the other end abuts on the groove end surface of the connecting groove 59, the assembly structure of the spring member becomes simple.

  Further, as the pressing mechanism 58, a position adjusting bolt 63 screwed to the valve box 2 so as to be positionally adjustable, and a boss portion 64 protruding from the valve body receiving members 32 and 33 and abutting on the tip of the position adjusting bolt 63, With such a configuration, the pressing force of the valve body 3 against the valve seat 18 can be easily adjusted.

  Further, since the other flow path end opening 20 is formed and the valve seat pressing member 19 that is attached to the first valve box 7 and prevents the valve seat 18 from coming off is provided, a simple assembling work of the valve seat 18 is performed. It can be assembled to the valve box 2 with.

  The preferred embodiment of the present invention has been described above. In the embodiment, the valve rods 4 and 5 are rotated by rotating the lever 44 around the valve rod axis O2. However, not limited to the lever 44, for example, a rotary handle (rotary cap) that is rotated around a vertical axis (vertical axis in FIG. 1) rotates the valve rods 4 and 5 via a gear mechanism such as a bevel gear. It may be a moving structure. In addition to the manual valve, the valve rods 4 and 5 may be rotated as an automatic valve such as an electric valve. The intermediate opening holding mechanism 43 may be omitted when a gear mechanism is provided or when a motor-operated valve is used.

1 Non-Sliding Valve 2 Valve Box 3 Valve Body 4, 5 Valve Bar 6 Flow Path 7 1st Valve Box 8 2nd Valve Box 11, 12 Valve Bar Support 15 Ball Valve Insertion Opening 18 Valve Seat 19 Valve Seat Holding Member 31 ball valves 32, 33 valve body receiving member 34 fitting convex portion 35 flat surface portion 36 fitting concave portion 37 guide groove 43 intermediate opening holding mechanism 45 flat spring 46 spring adjusting portion 48 thrust receiving member 56 coupling mechanism 57 biasing member 58 Pressing mechanism 59 Connection groove 60 Connection pin 61 Compression coil spring 62 Spring accommodation hole 63 Position adjustment bolt 64 Boss O1 Flow axis O2 Valve stem axis P1 Neutral position

Claims (5)

A non-sliding valve 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 coupling mechanism that couples the valve element with the valve rod so as to be linearly movable in a direction orthogonal to the axis of the valve rod;
A biasing member that biases the valve element to a neutral position in the orthogonal direction,
A pressing mechanism that is provided between the valve box and the valve body and that presses the valve body against the valve seat against the biasing force of the biasing member when the valve body closes;
Equipped 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 having one flow path end opening formed therein and fitted in an inner peripheral wall of the ball valve insertion opening. Prepare,
The connection mechanism has a connection groove formed in the valve body receiving member along the orthogonal direction, and a connection groove formed in the valve rod and having a cross-sectional shape capable of being rotated together and loosely fitted in the connection groove. With pins,
The urging member is a spring member housed in a spring accommodating hole of the connecting pin, one end of which abuts a hole bottom portion of the spring accommodating hole and the other end of which abuts a groove end surface of the connecting groove. Non-sliding valve. A non-sliding valve 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 coupling mechanism that couples the valve element with the valve rod so as to be linearly movable in a direction orthogonal to the axis of the valve rod;
A biasing member that biases the valve element to a neutral position in the orthogonal direction,
A pressing mechanism that is provided between the valve box and the valve body and that presses the valve body against the valve seat against the biasing force of the biasing member when the valve body closes;
Equipped 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 having one flow path end opening formed therein and fitted in an inner peripheral wall of the ball valve insertion opening. Prepare,
The pressing mechanism includes a position adjusting bolt screwed into the valve box so as to be positionally adjustable, and a boss portion projecting from the valve body receiving member and abutting on a tip of the position adjusting bolt. Characteristic non-slide valve. 3. The valve seat pressing member, which is formed with the other flow path end opening and is attached to the first valve box to prevent the valve seat from slipping off, according to claim 1 or 2 . Non-sliding valve. A method of assembling 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,
The non-slide valve is
A coupling mechanism that couples the valve element with the valve rod so as to be linearly movable in a direction orthogonal to the axis of the valve rod;
A biasing member that biases the valve element to a neutral position in the orthogonal direction,
A pressing mechanism that is provided between the valve box and the valve body and that presses the valve body against the valve seat against the biasing force of the biasing member when the valve body closes;
Equipped 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 having one flow path end opening formed therein and fitted in an inner peripheral wall of the ball valve insertion opening. Prepare,
The connection mechanism has a connection groove formed in the valve body receiving member along the orthogonal direction, and a connection groove formed in the valve rod and having a cross-sectional shape capable of being rotated together and loosely fitted in the connection groove. With pins,
The biasing member is a spring member that is housed in the spring housing hole of the connecting pin and has one end abutting the hole bottom portion of the spring housing hole and the other end abutting the groove end surface of the connecting 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 inserting the valve stem 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 with the valve stem assembly;
A fourth step of assembling the second valve box with the first valve box,
A non-slide valve assembling method, characterized in that the steps are performed in that order. In the valve rod assembly, a tip of the connecting pin penetrates the connecting groove and projects from the valve body receiving member,
A guide groove is formed on the peripheral surface of the ball valve along the orthogonal direction and into which the tip of the connecting pin is loosely fitted.
In the third step, the ball valve is inserted into the first valve box while loosely fitting the tip of the connecting pin into the guide groove, and the ball valve and the valve body receiving member are fitted in a concavo-convex shape. 5. The method for assembling a non-slide valve according to claim 4 , wherein.

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