JPH07260015A - Sluicing valve device - Google Patents

Abstract

PURPOSE:To dispense with any linking mechanism for linking a pressing mechanism with moving pieces by providing an auxiliary pressing mechanism for pressing the moving pieces by the movement of an extruding member, and for extruding the moving pieces in the direction perpendicular to the inserting direction. CONSTITUTION:A synthetic rubber-made elastic seal member 10 to be elastically deformed by pressing by a pressing mechanism 5, and to be bonded to the pipe inner surface side is provided on a sluicing valve body 2. Moreover, an auxiliary pressing mechanism 13 for extruding a pair of right and left, metallic, and hard moving pieces 12 in the direction perpendicular to the valve rod shaft core X direction, and pressing the elastic seal member 10 to the pipe inner surface side in the direction perpendicular to the X direction by means of the moving pieces 12 is provided. That is, in the auxiliary pressing mechanism 13, a connecting plate 20 is an extruding member for pressing the moving pieces 12 by the movement along the X direction according to the elastic deformation of the elastic seal member 10, and extruding the moving pieces 12 in the direction perpendicular to the X direction. Moreover, it is a hard supporting member for slidably and movably supporting the moving pieces 12 of a cylindrical metal fitting 23 in the direction perpendicular to the X direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a valve body which is inserted into a pipe through an opening formed in a peripheral wall of the pipe, and a pressing mechanism which presses the valve body inserted into the pipe along its insertion direction. An elastic seal material that is elastically deformed by the pressing by the pressing mechanism and comes into close contact with the inner surface of the pipe to the valve body, and a movable piece is pushed out in a direction intersecting with the insertion direction, and the elastic seal is formed by the movable piece. The present invention relates to a partition valve device provided with an auxiliary pressing mechanism that presses a material toward the inner surface of the pipe in a direction intersecting the insertion direction.

[0002]

2. Description of the Related Art The valve device for partitioning described above uses a pressing mechanism to press a valve body inserted into a pipe through an opening formed in a peripheral wall of the pipe to elastically deform an elastic sealing material provided on the valve body to cause the inside of the pipe to be deformed. Since it is in close contact with the surface side, there is an advantage that the flow path in the pipe can be easily partitioned at a desired position, but since the elastic seal material is elastically deformed by pressing in the insertion direction of the valve body, the elastic seal material There is a drawback that it is difficult to make a pressure contact with a sufficient pressure contact force to the inner surface of the pipe in the direction that intersects the insertion direction.To solve this drawback, push out the movable piece in the direction that intersects the insertion direction. Then, an auxiliary pressing mechanism for pressing the elastic seal material with the movable piece toward the pipe inner surface side in the direction intersecting the insertion direction is provided, and the elastic seal material is pressed against the pipe inner surface side in the direction intersecting the insertion direction. Positively press And form (for example, Japanese Utility Model 64-390
(See Publication No. 9).

[0003]

However, the auxiliary pressing mechanism provided in the conventional partition valve device described above is
When the pressed member on the valve body side that is pressed by the pressing mechanism is also used as the movable piece and the pressed member, that is, the movable piece is pressed by the pressing mechanism along the insertion direction, the elastic seal material elastically deforms at the same time. Since the movable piece is configured to be pushed out in a direction intersecting the insertion direction, there is a drawback that the linkage structure between the pressing mechanism and the movable piece becomes complicated, and the assembling of the pressing mechanism and the movable piece is difficult. However, there is also a drawback that it takes time.

Further, since the elastic sealing material is only in pressure contact with the inner surface of the pipe at the tip end side in the insertion direction of the valve body inserted in the pipe, the pressure difference in the pipe in the state where the pipe flow passage is partitioned. Due to the above, there is a drawback that the valve element is easily displaced in the tube axis direction, and the sealing function of the elastic sealing material is easily impaired.

The present invention has been made in view of the above circumstances, and by devising a pushing structure in a direction intersecting the inserting direction of the movable piece, the elastic sealing material intersects the inserting direction. To provide a partitioning valve device that can be easily pressed against the inner surface of the pipe with a sufficient pressure contact force, yet can simplify the structure of the auxiliary pressing mechanism and that does not impair the sealing function of the elastic sealing material. With the goal.

Another object of the present invention is to enable the movable piece to be efficiently pushed out in a direction intersecting the insertion direction.

Another object of the present invention is to simplify the support structure for supporting the movable piece on the support member so that the movable piece can swing.

Another object of the present invention is to make it possible to strongly press the elastic seal material toward the inner surface of the pipe in the direction intersecting the insertion direction.

Another object of the present invention is to make it possible to effectively maintain the sealing function of the elastic sealing material.

Another object of the present invention is to make it possible to effectively maintain the sealing function of the elastic sealing material while simplifying the structure of the pressing mechanism.

It is another object of the present invention to provide a partition valve device in which the sealing function of the elastic sealing material is easily maintained.

[0012]

To achieve the above object, the present invention is characterized in that a valve body inserted into a pipe through an opening formed in a peripheral wall of the pipe, and a direction in which the valve body inserted into the pipe is inserted. A pressing mechanism that presses along with is provided, and in the valve body, an elastic sealing material that elastically deforms by the pressing by the pressing mechanism and comes into close contact with the inner surface of the pipe, and the movable piece intersects the insertion direction. A valve device for partitioning, which is provided with an auxiliary pressing mechanism that pushes the elastic seal material toward the inner surface of the pipe in a direction intersecting the insertion direction by pushing the movable piece in the direction of the auxiliary valve. The mechanism is provided with a push-out member for pushing the movable piece by a movement along the insertion direction accompanying the elastic deformation of the elastic seal member, and pushing out the movable piece in a direction intersecting the insertion direction in the valve body. Composed before The insertion direction leading end side of the valve body, while inserting the valve body in the tube lies in the engaging portion for engaging the stepped portion formed in the pipe wall is provided.

A support member that supports the movable piece so as to be movable in a direction intersecting the insertion direction is provided on the valve body, and the pushing member and the support member are formed of the elastic seal material. Along with the elastic deformation, they are fitted so as to be relatively movable along the pressing direction, and the relative movement of the pushing member and the supporting member due to the elastic deformation of the elastic sealing material causes the pushing member to move the movable piece. When the movable piece is pressed and pushed out in the direction intersecting the insertion direction, the movable piece can be efficiently pushed out in the direction intersecting the insertion direction.

When the movable piece is fitted to the support member so as to be capable of swinging movement in a direction intersecting with the insertion direction, when the movable piece is swingably supported by the support member. The support structure can be simplified.

When the elastic sealing material is held by a holding member that moves integrally with the pushing member and the elastic sealing material is elastically deformed by the pressing of the holding member by the pressing mechanism, the elastic sealing material is inserted. It is possible to strongly press the inner surface of the pipe in the direction intersecting the direction.

A shaft member inserted into the pipe from the opening is inserted into the valve body, the valve body is inserted into the pipe from the opening along the shaft member, and the shaft member is inserted from the valve body. When the insertion end portion is configured as the locking portion, the sealing function of the elastic sealing material can be effectively maintained.

When the pressing mechanism is constructed by screwing the valve body and the shaft member together, and the valve body inserted into the pipe is pressed by the rotation of the shaft member along the inserting direction, The structure of the pressing mechanism can be simplified and the sealing function of the elastic sealing material can be effectively maintained.

When the locking portion is locked in the through hole as a step formed in the peripheral wall of the tube, the sealing function of the elastic sealing material can be easily maintained.

[0019]

The valve body inserted into the pipe is pressed through the opening formed in the peripheral wall of the pipe along the inserting direction to elastically deform the elastic seal material provided on the valve body, and the elastic seal material is moved to the inner surface of the pipe. Although it is possible to partition the flow path in the pipe by closely contacting each other, the pressing mechanism and the movable piece are linked so that the elastic seal material is elastically deformed by the pressing of the movable piece by the pressing mechanism, and at the same time the movable piece is inserted in the insertion direction. Instead of an auxiliary pushing mechanism that pushes in a direction intersecting with each other, a pushing member that moves along the insertion direction due to elastic deformation of the elastic sealing material is provided on the valve body, and the moving piece is pushed by the movement of the pushing member. ,
Since the auxiliary pressing mechanism for pushing out the movable piece in a direction intersecting the insertion direction is provided, it is possible to eliminate a linking structure for linking the pressing mechanism and the movable piece.

Further, on the tip end side in the insertion direction of the valve body, since the valve body is inserted into the pipe, there is provided a locking portion which is locked to a step formed on the peripheral wall of the pipe. It is possible to regulate the displacement movement of the valve body in the pipe axis direction due to the pressure difference in the pipe in the state of partitioning.

The valve member is provided with a support member for movably supporting the movable piece in a direction intersecting with the insertion direction, and the pushing member and the support member are elastically deformed by the elastic seal material. The movable member is fitted so as to be relatively movable along the pressing direction, and the relative movement between the pushing member and the supporting member due to the elastic deformation of the elastic sealing material causes the pushing member to press the movable piece, so that the movable piece moves in the insertion direction. When pushed out in a direction intersecting with each other, the pushing direction of the pushing member against the movable piece can be made constant.

When the movable piece is fitted into the support member so as to be capable of swinging movement in a direction intersecting with the insertion direction, when the movable piece is swingably supported by the support member, the movable piece is movable. The supporting structure can be simplified as compared with the case where the supporting member and the supporting member are swingably connected via a shaft member such as a pin.

When the elastic sealing material is held by the holding member that moves integrally with the pushing member and the elastic sealing material is elastically deformed by the pressing of the holding member by the pressing mechanism, the pushing member along with the holding member along the insertion direction. Since it moves efficiently, the amount of extrusion of the movable piece can be increased.

A shaft member inserted into the pipe from the opening is inserted into the valve body, the valve body is inserted into the pipe from the opening along the shaft member, and the insertion end of the shaft member from the valve body is locked. If it is configured in the pipe part, the valve element can be inserted into the pipe because the shaft member with relatively low resistance of the fluid flowing in the pipe can be locked to the step formed on the peripheral wall of the pipe in advance, and then inserted into the pipe. There is little displacement due to the flow of fluid in the valve body,
The elastic seal material can be brought into close contact with the inner surface of the pipe with high accuracy.

When the pressing mechanism is constructed by screwing the valve body and the shaft member together and the valve body inserted into the pipe is pressed along the insertion direction by the rotation of the shaft member, the structure of the pressing mechanism is While simplifying, the elastic sealing material can be brought into close contact with the inner surface of the pipe with high accuracy.

When the locking portion is locked in the through hole as a step portion formed on the pipe peripheral wall, for example, the locking portion is formed on the step portion having a shallow depth such as a counterbore formed on the inner surface of the pipe peripheral wall. The locking portion can be locked more reliably than in the case of locking.

[0027]

According to the partitioning valve device of the first aspect of the present invention, it is easy to press the elastic sealing material against the inner surface of the pipe in the direction intersecting the insertion direction with a sufficient pressing force.
The structure of the auxiliary pressing mechanism can be simplified, and the sealing function of the elastic sealing material is not easily impaired.

According to the partitioning valve device of the second aspect, the movable piece can be efficiently pushed out in the direction intersecting the insertion direction.

In the partition valve device according to the third aspect, when the movable piece is supported by the support member so as to be swingable, the support structure thereof can be simplified.

In the partitioning valve device according to the fourth aspect, the elastic seal material can be strongly pressed against the inner surface of the pipe in the direction intersecting the insertion direction.

The partition valve device according to the fifth aspect can effectively maintain the sealing function of the elastic sealing material.

In the partitioning valve device according to the sixth aspect, the sealing function of the elastic sealing material can be effectively maintained while simplifying the structure of the pressing mechanism.

In the partition valve device according to the seventh aspect, it is easy to maintain the sealing function of the elastic sealing material.

[0034]

【Example】

[First Embodiment] FIGS. 7 and 8 show that an opening 1 is formed in a peripheral wall of an existing pipe A, such as a water pipe buried underground, in an uninterrupted state in which the fluid in the pipe such as tap water is not stopped. Shows a valve device B for partitioning which divides an in-pipe flow path by a valve body 2 inserted into the pipe from the opening 1 in an undisturbed flow state, in which a closed case 3 enclosing the outer peripheral surface of the pipe in a closed state and an inside of the closed case 3 A valve rod 4 which is an example of a shaft member inserted into the pipe from an opening 1 formed in the peripheral wall of the pipe, a valve body 2 for partitioning in which the valve rod 4 is screwed in an inserted state, and an opening along the valve rod 4. 1, a pressing mechanism 5 for pressing the partitioning valve body 2 inserted into the pipe in the insertion direction, that is, the valve stem axis X direction, and a branching opening formed in the closed case 3 for connecting the branching pipe C. A branch opening / closing valve body 7 for opening / closing 6 is provided.

The closed case 3 is a lower case 3 mounted so as to hold the peripheral wall of the existing pipe A from the lower surface side thereof.
c, the intermediate case 3b to which the short pipe 8 forming the branching opening 6 is connected, and the lid case 3a are vertically connected by bolts, and the partition valve body 2 is screwed into the lid case 3a. The fitted valve rod 4 and the branch opening / closing valve body 7 are rotatably supported, and the branch opening / closing valve body 7 is opened / closed along a guide circumferential groove 9 formed in the inner surface of the intermediate case 3b in the circumferential direction. It is installed.

As shown in FIGS. 1 to 5, the partition valve body 2 is made of a synthetic rubber elastic seal member 10 which is elastically deformed by the pressing force of the pressing mechanism 5 and adheres closely to the inner surface of the pipe. A casting cored bar 11 that is a hard holding member for holding 10 and a pair of left and right metal hard movable pieces 12 are pushed out in a direction intersecting the valve stem axis X direction, and the movable piece 12 is elastic. An auxiliary pressing mechanism 13 that presses the sealing material 10 toward the inner surface of the pipe in the direction intersecting the X-axis direction of the valve stem is provided.

The core metal 11 is fitted in a guide groove 14 formed in the inner surface of the hermetically sealed case extending in parallel to the axis X of the valve rod, extending between the lid case 3a and the intermediate case 3b.
And a pressing flange 16 that presses the elastic sealing material 10 against the peripheral edge of the opening 1 from the outside of the peripheral wall of the pipe when the flow path in the pipe is partitioned.
A screw piece mounting portion 17 integrally formed on the lower surface side of the pressing flange 16, and a pair of front and rear collar plates 18 and 19 integrally formed on the lower surface side of the screw piece mounting portion 17 in a collar shape.
A downward V-shaped connecting plate 20 that integrally connects the collar plates 18 and 19 together, and the connecting plate 20 forms a wedge surface 2 described later.
It is configured as a hard extrusion member including the screw piece 1, and the screw piece 22 is attached to the screw piece attachment portion 17 in a non-rotating state.

The pressing mechanism 5 is constructed by screwing a male screw formed on the valve rod 4 into a screw piece 22. When the valve rod 4 is rotated in any one direction, the screw piece 22 moves up and down to form a partition valve. The body 2 moves up and down along the valve stem 4,
1 to 3, the partition valve body 2 is inserted into the pipe until the elastic seal material 10 on the lower surface comes into contact with the inner surface of the peripheral wall of the pipe as shown in FIGS. When the rod 4 is rotated, the screw piece 22 that tries to move downward
2, the core metal 11 is pressed, and as shown in FIG. 2, the partitioning valve body 2 is pressed in the direction of the valve rod axis X to elastically deform the elastic seal material 10, so that the elastic seal material 10 moves toward the inner surface of the pipe. To be in close contact.

The auxiliary pressing mechanism 13 has an elastic sealing material 1.
A connecting plate 20 which is a pushing member that pushes the movable piece 12 by the movement along the X direction of the valve stem axis due to the elastic deformation of 0 and pushes out the movable piece 12 in a direction intersecting the X direction of the valve stem axis. And a tubular metal fitting 23, which is a hard support member that supports the movable piece 12 so as to be capable of swinging movement in a direction intersecting with the valve stem axis X direction, are provided in the partition valve body 2. .

As shown in FIG. 6, the movable piece 12 has a lower end surface 24 serving as a swing fulcrum formed in an arcuate surface centered on the swing axis Y, and the lower end surface 24 is formed into a cylindrical metal fitting 23. The groove 26 of the lower end face 24 is supported by being fitted in a groove 26 having an arcuate cross section formed in the lower end flange 25 and supported so as to be swingable.
The elastic seal member 1 that covers the movable piece 12
It is blocked by 0.

Then, a through hole 27 is formed in the pushing member 20 and two O-rings 28 are fitted therein.
7. The tubular metal fitting 23 is inserted through 7, and the pushing member 20 and the tubular metal fitting 23 are fitted so as to be relatively movable along the valve rod axis X direction due to the elastic deformation of the elastic seal member 10. There is.

At the tip end side of the partitioning valve body 2 in the direction of the valve rod axis X, with the partitioning valve body 2 inserted in the pipe,
An engagement portion 30 that engages with a spot facing hole 29, which is an example of a step portion formed on the inner peripheral surface side of the pipe peripheral wall, is provided.

The locking portion 30 includes the core metal 11 and the tubular metal fitting 2.
3 and the elastic sealing material 10 are formed by providing a small diameter portion at the insertion end portion of the valve rod 4 which is inserted into the through hole 31 formed in series. The insertion end portion of the valve rod 4 is formed into the counterbore hole 29. It is fitted and locked.

The elastic sealing material 10 is not filled between the movable piece 12 and the wedge surface 21 of the connecting plate 20 and the outer peripheral surface of the cylindrical metal fitting 23 facing the movable piece 12, and the space 3 is formed in this portion.
2 is formed to facilitate the swinging movement of the movable piece 12 in a direction intersecting the valve rod axis X direction.

Further, the elastic sealing material 10 is in the range shown by cross hatching in FIGS. 1, 3, 4, and 5, that is, the wedge surface 21 of the connecting plate 20 and the movable pieces of the collar plates 19, 19. The surfaces facing each other with 12 in between, the outer peripheral surface of the tubular metal fitting 23, and the core metal peripheral surface between the pressing flange 16 and the front flange plate 18 without being bonded to the movable piece 12. , Tubular fitting 2
The movable piece 1 is formed into a predetermined shape so as to cover the peripheral surface of the movable piece 1.
2 is provided so as to be embedded in the elastic sealing material 10.

Next, a method for partitioning the in-pipe flow path by the partition valve device B and changing the flow path from the existing pipe A to the branch pipe C connected to the closed case 3 in a continuous flow state is described. Will be described with reference to FIGS. 9 to 16.

As shown in FIG. 9, the lower case 3c and the intermediate case 3b of the closed case 3 are attached to the outer peripheral surface of the pipe at a predetermined position with the sealing material sandwiched therebetween, and the branching opening 6 of the intermediate case 3b is provided with the cap 33. Block it in advance with lower case 3
A work sluice valve D is attached to the outer peripheral edge of the flange 34 of the intermediate case 3b so that the inside of the closed case 3 composed of c and the intermediate case 3b can be kept watertight.

Next, as shown in FIG. 10, a punching machine E for rotating and punching a cylindrical cutter 35 is provided with a working sluice valve D.
Watertightly connect to the flange of. The cutter 35
A drill 38 having a first cutting edge 36 forming a counterbore hole 29 on the inner peripheral surface of the pipe peripheral wall and a second cutting edge 37 forming a through hole on the peripheral wall of the pipe is fixed to the center of rotation of the pipe. 11, the feed handle 39 is rotated to lower the cutter 35 into the intermediate case 3b through the work sluice valve D, and while the feed handle 39 is rotated, as shown in FIG. A through hole is formed in the pipe peripheral wall, and the opening 1 is formed in the pipe peripheral wall by the cutter 35 while the drill 38 is inserted in the pipe peripheral wall.

Next, the rotation of the cutter 35 is stopped, the feed handle 39 is rotated, and as shown in FIG.
8 is fed until the first cutting edge 36 hits the peripheral wall of the pipe, and the feed amount (stroke) by the feed handle 39 at that time is read and recorded.

Then, the cutter 35 is rotated again, and the feed handle 39 is rotated until the feed amount (stroke) including the predetermined counterbore depth is reached, and as shown in FIG.
A counterbore hole 29 of a predetermined depth is formed on the peripheral wall of the pipe, and the cutter 3
Stop rotation of 5.

Next, the feed handle 39 is turned in the opposite direction, and the cutter 35 is held with the pipe peripheral wall section 40 held inside.
Is pulled up to the perforator E side, the work sluice valve D is closed, and the perforator E is removed from the work sluice valve D.

Then, instead of the punching machine E, as shown in FIG. 14, the lid case 3a is inserted into the working sluice valve D,
The inserter F for connecting to the flange 34 of the intermediate case 3b is watertightly connected to the flange of the work gate valve D.

In this inserting machine F, a lid case 3a supporting a partition valve body 2 screwed on a valve rod 4 and a branch opening / closing valve body 7 is housed so that it can be moved up and down. As shown in FIG. 15, the work sluice valve D is opened, the lid case 3a is lowered, and the engaging portion 30 formed at the insertion end portion of the valve rod 4 is fitted into the counterbore hole 29, while the flange of the intermediate case 3b is inserted. 34, and the bolt 41, which is screwed into the flange 34 in advance, is temporarily tightened, and the lid case 3a and the intermediate case 3 are
and b are connected in a substantially watertight manner.

Next, as shown in FIG. 16, the insertion machine F and the work sluice valve D are removed, the bolts 41 are fully tightened, and the branch opening / closing valve body 7 is used to close the branch opening 6; The cap 33 that has blocked the branch opening 6 is removed.

Then, when a predetermined branch pipe C is connected to the short pipe 8 and the branch opening / closing valve body 7 is rotated to open the branch opening 6, the fluid in the existing pipe A flows into the branch pipe C. To do.

Next, when the valve rod 4 is rotated, the partition valve body 2 moves down along the guide groove 14 while being prevented from rotating by the guide piece 15 fitted in the guide groove 14.
Enter the tube through the opening 1 and, as shown in FIGS. 1 and 3,
When the insertion end side of the elastic sealing material 10 inserted into the pipe is in contact with the inner surface of the pipe, when the valve rod 4 is further rotated, the screw piece 22 descends, and the core metal 11 is pressed by the screw piece 22 so that the partition valve is formed. The body 2 is pressed downward along the axis X of the valve stem, and as shown in FIG. 2, the elastic sealing material 10 elastically deforms and comes into close contact with the inner surface of the pipe, and as shown in FIGS. 7 and 8, The flow path inside the pipe is partitioned and the flow path is changed to a flow path from the existing pipe A to the branch pipe C.

As the elastic sealing material 10 elastically deforms, the pushing member 20 moves closer to the tubular metal fitting 22 side along the direction of the valve rod axis X, and pushes out as shown in FIG. The wedge surface 21 of the member 20 is a movable piece 12 on the left and right.
Since the movable piece 12 is pressed by the wedge surface 21 and oscillated in a direction intersecting with the valve stem axis X direction, the movable seal 12 is pushed out to push the elastic seal member 10 in the valve stem axis X direction. The elastic sealing material 10 is pressed strongly against the pipe inner surface side in the direction intersecting with the pipe, and the elastic sealing material 10 is pressed against the pipe inner surface side over substantially the entire circumference.
Pressed with sufficient pressing force.

[Second Embodiment] FIG. 17 shows another embodiment of the structure in which the locking portion 30 formed at the insertion end of the valve rod 4 is locked at the stepped portion formed at the pipe peripheral wall. An engaging portion 30 of the valve rod 4 is engaged with a flat-faced counterbore hole 29 which is another example of the formed step portion. Other configurations are similar to those of the first embodiment.

[Third Embodiment] FIG. 18 shows another embodiment of the structure in which the locking portion 30 formed at the insertion end of the valve rod 4 is locked at the stepped portion formed on the pipe peripheral wall, which is formed on the pipe peripheral wall. The locking portion 30 of the valve rod 4 is inserted into the through hole 29, which is another example of the stepped portion, and locked, and the tip end surface 42 of the locking portion 30 formed at the insertion end of the valve rod 4 is conical. It is formed on the surface so that it can be easily inserted into the through hole 29. Other configurations are similar to those of the first embodiment.

In the case of the present embodiment, not only can the locking portion 30 be reliably locked, but the step portion can be formed without considering the depth of the hole as compared with the case where the counterbore hole is formed as the step portion. Therefore, there is an effect that the work of forming the step can be easily performed.

In this embodiment, the locking portion 30 is formed to have a diameter smaller than the diameter of the valve rod 4. However, instead of such a locking portion 30, a locking portion having substantially the same diameter as the valve rod 4 is used. May be formed, or the tip portion of the valve rod 4 itself may be formed as a locking portion. In this case, even if the length of the valve rod 4 is slightly longer than the predetermined length, the valve rod 4 can be mounted in the closed case 3, so that the valve rod 4 can be manufactured without requiring high precision.

[Fourth Embodiment] FIG. 19 shows another embodiment of a locking portion provided on the distal end side of the partition valve body 2 in the insertion direction. The outer surface of the elastic seal material 10 is tubular along the through hole 31. The locking portion 30 is formed so as to project to the.

As shown in the first to third embodiments, when the engaging portion 30 is formed at the insertion end of the valve rod 4, the valve rod 4 is
It is necessary to accurately manufacture the locking portion 30 so that the locking portion 30 can be locked to the stepped portion 29 formed on the peripheral wall of the pipe, but it is locked to the partition valve body 2 itself as in the present embodiment. Part 30
By providing the valve rod 4, there is an effect that the valve rod 4 can be manufactured without such accuracy, and the length of the valve rod 4 can be shortened. The size of the inserter F for connecting the lid case 3a supporting the valve body 2 and the branch opening / closing valve body 7 to the flange 34 of the intermediate case 3b can be reduced in size. Other configurations are similar to those of the first embodiment.

Also in this embodiment, similarly to the third embodiment, a through hole which is another example of a step portion is formed in the peripheral wall of the pipe, and the elastic sealing material 10 is projected into this through hole. The locking portion 30 formed as above may be locked.

[Fifth Embodiment] FIG. 20 shows another embodiment of the locking portion provided on the distal end side of the partitioning valve body 2 in the insertion direction. The inner peripheral surface side of the through hole 31 formed in the elastic sealing material 10 is shown. Tsuba 43
The metal ring 44 provided with is fitted in, and the protruding end of the metal ring 44 from the elastic seal material 10 is formed in the locking portion 30. In this embodiment, the elastic sealing material 10 is provided so as to cover the entire outer peripheral surface of the collar plate 18.

Also in the case of this embodiment, the same effect as the special effect in the fourth embodiment is obtained. Other configurations are similar to those of the first embodiment.

Also in this embodiment, similarly to the third embodiment, a through hole which is another example of a step portion is formed in the peripheral wall of the pipe, and the metal ring formed as the locking portion 30 in this through hole. The projecting end of the elastic seal member 44 of 44 may be locked.

Other Embodiments 1. The partition valve device according to the present invention is not limited to being mounted on a liquid transport pipe such as a water pipe, but may be mounted on a gas transport pipe such as a gas pipe. 2. The partition valve device according to the present invention may be mounted in a state where the flow of the fluid in the pipe is stopped. 3. The partition valve device according to the present invention may be configured such that all of the openings formed in the peripheral wall of the pipe are closed by the elastic sealing material to partition the flow passage in the pipe into front and rear. 4. The movable piece may be configured to be pressed by a wedge surface provided so as to move due to elastic deformation of the elastic seal material, and to slide toward the inner surface of the pipe in a direction intersecting the insertion direction. 5. The movable piece may be configured to be pressed by the elastically deformable elastic sealing material itself and swing or slide toward the inner surface of the pipe in a direction intersecting the insertion direction. 6. The pushing member and the holding member that holds the elastic sealing material may be provided separately.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a main part

FIG. 2 is a cross-sectional view of the main part

FIG. 3 is a vertical cross-sectional view of the main part

4 is a sectional view taken along the line IV-IV in FIG.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is a perspective view of a main part.

FIG. 7 is a partial cross-sectional front view of a partition valve device.

FIG. 8 is a partially longitudinal side view of the partition valve device.

FIG. 9 is a schematic vertical sectional side view showing the construction method.

FIG. 10 is a schematic vertical sectional side view showing a construction method.

FIG. 11 is a schematic cross-sectional front view of essential parts showing a construction method.

FIG. 12 is a schematic cross-sectional front view of essential parts showing a construction method.

FIG. 13 is a schematic cross-sectional front view of essential parts showing a construction method.

FIG. 14 is a schematic vertical sectional side view showing a construction method.

FIG. 15 is a schematic vertical sectional side view showing a construction method.

FIG. 16 is a schematic vertical sectional side view showing a construction method.

FIG. 17 is a transverse cross-sectional view of the main parts showing the second embodiment.

FIG. 18 is a transverse cross-sectional view of the main parts showing the third embodiment.

FIG. 19 is a transverse cross-sectional view of the main parts showing the fourth embodiment.

FIG. 20 is a vertical cross-sectional view of the main parts showing the fifth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opening 2 Valve body 4 Shaft member 5 Pressing mechanism 10 Elastic sealing material 11 Holding member 12 Movable piece 13 Auxiliary pressing mechanism 20 Extruding member 23 Supporting member 29 Step part 30 Locking part

Claims (7)

[Claims] 1. A valve body (2) inserted into a pipe through an opening (1) formed in a peripheral wall of the pipe, and a pressing mechanism (5) for pressing the valve body (2) inserted into the pipe along its insertion direction. )
The valve body (2) is provided with an elastic seal material (10) that is elastically deformed by the pressing by the pressing mechanism (5) and comes into close contact with the inner surface of the pipe, and a movable piece (12) in the insertion direction. The movable piece (1
2) an auxiliary pressing mechanism (1) for pressing the elastic sealing material (10) toward the inner surface of the pipe in a direction intersecting the insertion direction.
3) is provided, wherein the auxiliary pressing mechanism (13) is provided with the elastic sealing material (1).
0) pushes the movable piece (12) by the movement along the insertion direction due to elastic deformation of the movable piece (12) and pushes out the movable piece (12) in a direction intersecting the insertion direction. A step portion (29) provided on the valve body (2) and formed on the peripheral wall of the pipe on the distal side in the insertion direction of the valve body (2) with the valve body (2) inserted in the pipe.
A partition valve device provided with a locking portion (30) for locking to. 2. A support member (2) for movably supporting the movable piece (12) in a direction intersecting the insertion direction.
3) is provided on the valve body (2), and the pushing member (20) and the supporting member (23) move in the pressing direction in accordance with the elastic deformation of the elastic sealing material (10). The push-out member (20) is movable by the relative movement of the push-out member (20) and the support member (23) which are fitted together so as to be relatively movable along the elastic seal member (10). The partition valve device according to claim 1, wherein the movable piece (12) is pushed in a direction intersecting the insertion direction by pressing the piece (12). 3. The movable piece (12) is provided with the support member (2).
3. The partition valve device according to claim 2, wherein the partition valve device is fitted in 3) so as to be capable of swinging movement in a direction intersecting the insertion direction. 4. The elastic sealing material (10) is held by a holding member (11) that moves integrally with the pushing member (20), and the holding member (1) by the pressing mechanism (5).
The partition valve device according to claim 1, 2 or 3, wherein the elastic seal material (10) is elastically deformed by being pressed against (1). 5. A shaft member (4) inserted into the pipe through the opening (1) is inserted into the valve body (2), and the valve body (2) is opened along the shaft member (4). The insertion end from the valve body (2) of the shaft member (4) is inserted into the pipe from (1), and the engaging portion (30) is configured as the engaging end (30). Or the valve device for partition according to 4. 6. The valve body (2) comprises the pressing mechanism (5).
6. The valve body (2), which is configured by screwing a shaft member (4) with the shaft member (4) and is inserted into a pipe, is pressed along the insertion direction by rotation of the shaft member (4). Valve device for partition. 7. The partition according to claim 1, 2, 3, 4, 5 or 6, wherein the locking portion (30) is locked in a through hole (29) as a step formed in the peripheral wall of the tube. Valve device.