JPH06272796A - Liquid branching block - Google Patents

Abstract

PURPOSE:To provide a block for branching the liquid capable of freely changing the direction of the branched passage even after a plurality of blocks provided with the branched passage are connected and mounted on the main supply tube. CONSTITUTION:A connection part 4 is extended on the side of one of the opening parts of the main passage 1 of a block 1 provided with the main passage 2 and the branched passage 3, and a supporting part 7 of an O-ring 6 for sealing, a male screw part for connection, and a neck part 9 are provided on the outer circumference of the connection part 4 from the side of the opening end part 31. In addition, a seal inner circumferential part 10 to which the connection part 4 of the same block 1 can be fitted, and which is brought into close contact with the O-ring 6 to the end, a female screw part 11 to be screwed with the male screw part 8 on the inlet side, and an annular groove 12 which has the substantially same diameter as that of the ridge part of the male screw part 8 and the width H equivalent to the effective length L of the male screw part 8 between the inner circumferential part of this seal and the female screw part 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid branching block for branching from a main supply pipe of a flow path for various fluids such as liquids and gases to branch in any direction.

[0002]

2. Description of the Related Art As a means for branching a fluid such as a liquid or a gas from a single main supply pipe, a branch pipe is screwed to the side surface of the main supply pipe as disclosed in Japanese Utility Model Laid-Open No. 2-40191. A T-type branch connection structure in which the branch portion is fixed and reinforced with a frame from the outside is generally widely used. However, since the work of connecting the branch pipe to the mainstream pipe is troublesome, it is necessary to use the branch pipe in advance during piping work. When the necessity is set, for example, JP-A-63-280999 or JP-A-3
As described in Japanese Patent Publication No. 149492, a method of preliminarily inserting a fluid branching tool (multiple pipe joint) in the main supply pipe and connecting a branch pipe to the branch port to divide the fluid is preferably used. Has been done.

However, the fluid branching device as described above has a disadvantage in that the number of branch pipes is specified and the number of branch pipes cannot be increased or decreased. As a means for improving this disadvantage, JP-A-63-29 is known.
As disclosed in Japanese Patent No. 7897, there has been proposed a fluid block in which a desired number of blocks each having a central flow passage and a change flow passage can be connected to be inserted in a main supply pipe.

[0004]

However, in the above conventional fluid block having the central flow passage and the change flow passage, it is possible to equip the main supply pipe with a desired number of branch flow passages by connecting the blocks. Although it has the advantage of being able to do so, on the other hand, once a plurality of blocks have been connected and fixed, the direction of the branch flow passage cannot be changed arbitrarily. For example, four blocks are connected and After the branch channels of one block are fixed in the lateral direction and the remaining one branch channel is fixed in the upward direction, even if it is necessary to change the direction of the branch channels, once the blocks are connected together. You have to work to release the connection and re-connect.

An object of the present invention is to provide a fluid branching block in which the direction of the branch flow passage can be freely changed even after a plurality of them have been connected and interposed in the main supply pipe.

[0006]

According to the present invention, the branching blocks are individually rotatable while a plurality of fluid branching blocks each having a branching channel are airtightly connected and connected. Solved the problem.

That is, the fluid branching block according to the present invention is
It comprises a main flow passage penetrating the block and a branch flow passage extending from this main flow passage through one side surface of the block, and the connection portion is extended to one opening side of the main flow passage and On the outer periphery, a support portion for the sealing O-ring from the opening end side,
A male threaded portion for connection and a neck portion having substantially the same diameter as the valley portion of the male threaded portion are provided, and the connecting portion can be fitted to the inner circumference of the other opening side of the main flow path to the back side. The inner peripheral portion of the seal that is in close contact with the O-ring, the female thread portion that is screwed into the male thread portion on the inlet side, and the ridge portion of the male thread portion between the inner peripheral portion of the seal and the female thread portion. Is provided with an annular groove having the same diameter and a width dimension corresponding to the effective length of the male screw portion, and the male portion of the connecting portion of the block on one side to be connected is provided. When the threaded portion is screwed into the female threaded portion of the other opening of the block on the other side, and the O-ring of the connection portion is inserted into the seal when rotated and rotated more than the number of threads of the male threaded portion to fit in The male screw portion located in the peripheral portion passes through the female screw portion and is located in the annular groove and is in a non-pulled state. Tsu in which click is no to allow relatively rotatably joined while maintaining the coupled state.

The supporting portion of the O-ring of the connecting portion is formed by fitting an elastic O-ring in a groove in the circumferential direction, and the male screw portion is formed in a portion larger than the outer diameter of the O-ring. The number of threads should be at least 1.5 or more.

The inner peripheral portion of the seal on the inner peripheral surface on the other opening side of the main flow path into which the above-mentioned connecting portion is fitted is set to an inner diameter such that the O-ring can be compressed and deformed to fit.
The O-ring is press-fitted into the inner peripheral portion of the seal by screwing the male screw portion of the connecting block into the female screw portion on the inlet side and inserting the support portion of the O-ring. The female screw portion on the inlet side that is screwed with the male screw portion may have a function of advancing and retracting the male screw portion by screwing, and may have, for example, a spiral groove of about 1.5 threads.

An annular shape having a width dimension corresponding to the effective length of the male screw portion, which has substantially the same diameter as the crest portion of the male screw portion provided between the inner peripheral portion of the seal and the female screw portion. As described above, the groove is released from the screwed state when the male screw portion of the connecting block passes through the female screw portion, the male screw portion is housed in the annular groove, and the inner peripheral wall of the female screw portion and the male screw portion are accommodated. The side face of the screw thread of the portion is in contact with the side face of the screw thread, so that the connecting block is relatively rotatable but is in a non-pulled state.

The formation structure of the branch flow passage branched from the main flow passage penetrating the block does not need to be specified. For example, a short pipe communicating with the main flow passage is erected and fixed on one side surface of the block, A structure in which a connecting nut for connecting a branch pipe or a valve to the opening of the short pipe is rotatably and airtightly attached to the short pipe can be preferably applied.

The above-mentioned fluid branching block of the present invention comprises:
It is desirable to use stainless steel, brass, or an antirust metal such as gun metal, but depending on the type of fluid, it may be made of plastic.

[0013]

When the connecting portion of one block to be connected is fitted into the opening portion of the other block and one of the blocks is rotated to screw its male screw portion into the female screw portion of the opening portion of the other block. The O-ring at the tip of the connecting portion is press-fitted into the inner peripheral portion of the other seal to hermetically join the main flow paths of the both. Then, when the male screw portion is rotated by more than the number of threads of the male screw portion to be fitted into the male screw portion, the male screw portion passes through the female screw portion and is housed in the annular groove, and the inner peripheral wall of the female screw portion and the screw of the male screw portion are screwed. The side surfaces of the crests are in contact with each other to prevent separation of both blocks by simple pulling in the axial direction and to allow relative rotation of both connected blocks.

When both blocks connected as described above are pulled in the separating direction and rotated in the opposite direction, the male screw portion located in the annular groove can be screwed into the female screw portion. The two blocks can be separated by continuing the rotation in the opposite direction.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings showing an embodiment of the present invention, FIG. 1 is a partial sectional front view of a fluid branching block according to the present invention, and FIG. 2 shows a connecting state of two blocks. There is something. Block for fluid branch of the present invention (1)
Comprises a main channel (2) penetrating the central part of the block and a branch channel penetrating the side surface of the block (1) and extending in a direction perpendicular to the main channel (2).

On one opening side of the main flow path (2), a connecting portion (4) which can be fitted into the other opening portion is extended, and the connecting portion (4) is provided.
An O-ring support portion (7) for sealing, in which an O-ring (6) made of an elastic material is fitted in a groove (5) in the circumferential direction, is provided on the open end side of the outer periphery of the. And this O-ring support (7)
The male screw portion (8) having a diameter larger than that of the O-ring support portion (7) and the neck portion having substantially the same diameter as the valley portion of the male screw portion (8)
(9) is provided.

On the inner side of the inner periphery of the main flow path (2) of the block (1) on the side of the other opening, as shown in FIG. ) Is fitted, the O-ring support part (7) of the connection part (4) is located, and the seal inner peripheral part (10) is provided which is in close contact with the outer periphery of the O-ring (6). A female screw portion (11) screwed with the male screw portion (8) of the connection portion (4) is formed on the inlet side of the. The effective length of the male screw portion (8) is made to be substantially the same as the outer diameter of the crest portion of the male screw portion (8) between the inner peripheral portion (10) of this seal and the female screw portion (11). It
An annular groove (12) having a width dimension (H) corresponding to (L) is provided.

In the present embodiment, the branch flow path (3) is formed by vertically fixing a short pipe (20) on the side surface of the block (1), and a valve or a valve is provided on the opening side of the short pipe (20). A joint nut (21) for connecting the branch pipe is rotatably and airtightly attached to the short pipe (20). Joining nut (21) to short pipe (20)
As shown in the figure, the block (1) is attached to one end of the joining nut (21) as a means for mounting the
The connection part (4) may have the same structure as the connection part (4), and the inner circumference of the short pipe (20) may have the same structure as the inner circumference of the opening on the other side of the block (1). The means of can also be used.

Subsequently, the branching block of the present invention described above
The procedure for connecting and using a plurality of (1) is described.The male screw part of the connection part (4) of one block (1) to be connected
(8) is screwed into the female threaded portion (11) of the opening of the other block (1), and the block (1) is rotated more than the number of threads of the male threaded portion (8) to be inserted and fitted. As shown in FIG. 2, the O-ring (6) of the O-ring supporting portion (7) of the connecting portion (4) advances while being in pressure contact with the seal inner peripheral portion (10). 10), the male screw portion (8) passes through the female screw portion (11) and is located in the annular groove (12), and the O ring support portion (7) and the seal inner peripheral portion are located.
Both blocks (1) and (1) are airtightly joined by (10).

On the other hand, since the male screw part (8) is located in the annular groove (13) apart from the female screw part (10), the both blocks (1) and (1) are attached to the both blocks (1) and (1). Even if an external force acting in the axial direction is applied, the inner peripheral wall of the female screw part (8) and the side surface of the thread of the male screw part are in contact with each other, and the female screw part (10) does not pass through the male screw part (8). If both of the blocks (1) and (1) are applied with a force greater than the elastic frictional force between the O-ring (6) and the seal inner peripheral portion (11) in the circumferential direction while blocking and holding the non-pulled state, Blocks (1) (1) are main flow paths
It becomes a form in which it can be relatively rotated about (2).

Then, as illustrated in FIG. 4, several blocks (1) and (1) are connected as described above, and the end block (1) is connected to, for example, the connecting portion of the block (1). (4) the same structure as the short shaft portion (4A) with a plug body (30) is inserted to close the opening of the terminal block (1), the main supply pipe (31) at the end of the block The connection body (32) having the same structure as the inner circumference of the other opening of (1) is attached, and this connection body (32) is fitted and attached to the connection portion (4) of the starting block (1). By doing so, the flow path of the main supply pipe (31) can be branched into several
(1) By connecting a valve (33) or a branch pipe (34) to each branch portion of (1), the desired number of fluids in the main supply pipe (31) can be divided.

Moreover, since the connected blocks (1) and (1) are rotatable in the connected state, the branch pipe can be oriented in any direction.

[0023]

As described above, the fluid branching block of the present invention
(1) comprises a main flow path (2) penetrating the block (1) and a branch flow path (3) extending from the main flow path (2) through one side surface of the block (1), A connection part (4) is extended to one opening side of the main flow path (1), and a support part (7) for a sealing O-ring (6) is provided on the outer periphery of the connection part (4) from the opening end side. The connecting male screw portion (8) and the neck portion (9) having substantially the same diameter as the valley portion of the male screw portion (8) are provided, and the inner circumference of the other opening side of the main flow path (2) is provided. The inner peripheral portion (10) of the seal, which is fit into the O-ring (6) so that the connecting portion (4) can be fitted therein, and which is in close contact with the O-ring (6), and the female screw which is screwed into the male screw portion (8) on the inlet side. The portion (11), and between the inner peripheral portion (10) of this seal and the female screw portion (11), the diameter of the male screw portion (8) is made substantially the same as that of the ridge portion of the male screw portion (8). Since the annular groove (13) having the width dimension (H) corresponding to the effective length (L) is provided, one block (1) as described above.
The desired number of blocks (1) and (1) are not pulled out by screwing the male screw part (8) of the connection part (4) of the above into the female screw part (11) of the opening of the other block (1). And rotatably connected to each other.

The connected main flow paths (2) (2) are kept airtight by the elastic force exerted on the seal inner peripheral portion (10) of the O ring (6) of each O ring support portion (7), and the fluid leaks. There is nothing to do.

Therefore, the fluid branching block (1) of the present invention is suitable for, for example, a hot water supply part from a water heating tank or a hot water supply system of a building, and exhibits a beneficial effect in improving the efficiency of piping work.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional front view of a branching block of the present invention.

FIG. 2 is a partial cross-sectional front view showing a connected state of two blocks.

FIG. 3 is a side view of FIG.

FIG. 4 is a front view showing a branched mode of a flow path of a main supply pipe.

[Explanation of symbols]

 1. Branch block 2. Main flow path 3. Branch channel 4. Connection part 5. Groove 6. O-ring 7. O-ring support 8. Male screw part 9. Neck part 10. Inner circumference of seal 11. Female thread 12. Annular groove

Claims (1)

[Claims] 1. A main flow path that penetrates through the block, and a branch flow path that extends from this main flow path through one side surface of the block. A connection part is provided on one opening side of the main flow path. On the outer periphery of the connecting portion, a supporting portion of the sealing O-ring, a connecting male screw portion and a neck portion having substantially the same diameter as the valley portion of the male screw portion are provided from the opening end side, On the inner circumference on the other opening side, the inner peripheral portion of the seal in which the above-mentioned connecting portion of the same block can be fitted and which is in close contact with the O-ring on the back side, and the female screw portion which is screwed into the male screw portion on the inlet side , And an annular groove having a width dimension corresponding to the effective length of the male screw portion is provided between the inner peripheral portion of the seal and the female screw portion so as to have substantially the same diameter as the crest portion of the male screw portion. A liquid branching block characterized in that