JP3641161B2 - Continuous water branch joint - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a continuous water branch joint used for an existing main pipe.
[0002]
[Prior art]
Conventionally, branch joints have been widely used in which water is cut off in a certain area for a certain period of time, and the existing main pipe is branched from the main pipe via packing.
[0003]
[Problems to be solved by the invention]
However, there has been a problem that water must be worked for a certain period of time for a certain period of time, and there are many adverse effects associated with water-breaking work such as inconvenience to the whole area, and the construction cost and construction period are increased.
[0004]
Accordingly, an object of the present invention is to provide a continuous water branch joint that has a simple structure, can be easily and quickly mounted, can be branched without being cut off, and can achieve high water tightness.
[0005]
[Means for Solving the Problems]
To achieve the above object, without suspension of water supply branching joint according to the present invention, At a without suspension of water supply branch joint having a joint body attached via a packing member to the main pipe already set, the packing body of the pair A first packing half and a second packing half are provided, and the first packing half and the second packing half are disposed so that their end faces face each other so as to closely surround the main pipe. The joint body includes a pair of first joint halves and a second joint half, and the first packing half is attached to the first joint half on the branch side. Attach the second packing half to the body, and further increase the thickness of the first packing half and the second packing half as they approach the end face to form a sloped surface on the outer surface near the end face And the inner surface of the joint body corresponding to the inclined surface. It is obtained by forming a pressure gradient surface.
[0006]
In the continuous water branch joint having a joint body attached to an existing main pipe via a packing body, the packing body includes a pair of first packing halves and a second packing half. The packing half and the second packing half are arranged so that the end faces thereof face each other so as to closely surround the main pipe, and the first packing half has a hole for a branch pipe. And the end surface of the hole is formed to be substantially perpendicular to the outer surface of the first packing half, and receives water pressure to the gap between the outer surface of the main pipe and the inner surface of the joint body. The joint body is provided with a pair of first joint halves and a second joint half, and the first packing half is attached to the first joint half on the branch side, The second packing half is attached to the second joint half, and the first The thickness of the packing half and the second packing half are increased as they approach the end face, and a gradient surface is formed on the outer surface in the vicinity of the end surface, and the inner surface of the joint body corresponding to the gradient surface Is formed with a pressure gradient surface.
[0007]
Further, the inclined surface may be formed to have an angle of 45 ° to 80 ° with respect to the boundary surface between the first joint half and the second joint half, and the first packing around the branch pipe hole portion. It is also preferable to provide a closed annular ridge on the inner surface of the half.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
[0009]
FIG. 1 is an explanatory view of the use of the continuous water branch joint according to the present invention. As shown in FIG. The joint body 2 (made of metal or the like) is attached to form a continuous water branch joint. Then, a gate valve 31 is attached to the joint body 2, and a punching machine 32 is attached to the gate valve 31. At this time, the valve body 33 of the gate valve 31 is opened. Thereafter, as shown in FIG. 1B, the main pipe 30 is perforated by the cutter 34 of the perforator 32. At this time, the perforated portion 30a of the main pipe 30 is penetrated into the cutout portion 35 of the cutter 34 so that the perforated portion 30a does not flow into the main pipe 30. Thereafter, as shown in FIG. 1C, the cutter 34 of the punching machine 32 is returned to the original position, the valve body 33 is closed, and water flowing from the main pipe 30 is prevented. Then, as shown in FIG. 1 (d), the perforator 32 is removed, the branch pipe 36 is attached, the valve body 33 is opened, and water is passed. In this way, a branch pipe can be made without water interruption.
Therefore, there is no trouble of cutting off the water, cutting the main pipe, and joining the T-shaped pipe as in the prior art, and there is no harmful effect associated with the water-cutting work such as washing drainage after completion of construction, and the construction cost and construction period can be reduced or shortened.
[0010]
FIG. 2 is a perspective view of the packing body 1, and the packing body 1 includes a pair of first packing halves 3 and second packing halves 4. The first packing half 3 and the second packing half 4 are disposed so that both end faces 3d, 3d of the first packing half 3 and both end faces 4d, 4d of the second packing half 4 face each other. By doing so, the inner surface 3b of the first packing half 3 and the inner surface 4b of the second packing half 4 are configured to closely surround the main pipe 30.
[0011]
The first packing half 3 is preliminarily formed with a branch pipe hole 7 so that the labor of punching the packing body 1 with the cutter 34 of the punching machine 32 (see FIG. 1B) can be saved. The formation end surface 8 of the hole 7 is formed so as to be substantially perpendicular to the outer surface 3 a of the first packing half 3.
[0012]
Further, a closed annular ridge portion 10 is provided on the inner surface 3b of the first packing half 3 so as to surround the hole 7 (in FIG. 2, two ridge portions 10, 10 are provided). The degree of adhesion between the first packing half 3 around the hole 7 and the main pipe 30 is increased. Therefore, the sealing of the branch pipe 36 and the main pipe 30 (see FIG. 1D) is ensured.
[0013]
Further, the thickness of the first packing half 3 is formed so as to increase as it approaches the both end faces 3d, 3d, and the outer surface 3a in the vicinity of both end faces 3d, 3d of the first packing half 3 is inclined surface 3c. , 3c. Further, the thickness of the second packing half 4 is formed so as to increase as it approaches the both end faces 4d, 4d, and the outer surface 4a in the vicinity of both end faces 4d, 4d of the second packing half 4 is inclined surface 4c. , 4c.
[0014]
Next, FIG. 3 shows a front sectional view, and FIG. 4 shows a side sectional view. The joint body 2 includes a pair of first joint halves 5 and a second joint half 6. The first joint half 5 becomes the branch side connected to the branch pipe 36 (see FIG. 1 (d)), and the first packing half 3 is connected to the first joint half 5 and the first joint half. 5 so as to be fitted into the grooves 5d and 5d. Further, the second packing half 4 is attached to the second joint half 6 so as to be fitted into the grooves 6 d and 6 d of the second joint half 6. Thereafter, the first joint half 5 and the second joint half 6 are fastened and fixed with bolts 11 and nuts 12 so as to closely surround the main pipe 30. In addition, at both ends of the first joint half 5 and the second joint half 6 on the main pipe 30 side, retaining bodies 13 and 13 are provided, respectively, so that the joint body 2 can be securely fixed to the main pipe 30. It is said.
[0015]
The inner surface 5b of the first joint half 5 is formed with pressing gradient surfaces 5c, 5c corresponding to the gradient surfaces 3c, 3c of the first packing half 3, and the inner surface 6b of the second joint half 6. Are formed with pressure gradient surfaces 6c, 6c corresponding to the gradient surfaces 4c, 4c of the second packing half 4, and the pressure gradient surfaces 5c, 6c press the gradient surfaces 3c, 4c in close contact with each other.
[0016]
Further, the gradient surfaces 3c and 4c and the pressure gradient surfaces 5c and 6c are formed with an angle θ that is 45 ° to 80 ° with respect to the boundary surface X between the first joint half 5 and the second joint half 6. ing.
[0017]
If the angle θ exceeds 80 °, the clamping force G of the first joint half 5 and the second joint half 6 by the bolt 11 and the nut 12 (see FIG. 5A) is applied to the pressing gradient surface 5c. 6c cannot be converted into a pressing force F against the inclined surfaces 3c, 4c, between the packing body 1 and the main pipe 30 (near the tightening), between the packing body 1 and the joint body 2 (near the tightening) , The degree of adhesion becomes insufficient, and sufficient water tightness cannot be achieved.
[0018]
Further, when the angle θ is less than 45 °, the tightening force G can be converted into the pressing force F, but the pressing force F only presses the first packing half 3 and the second packing half 4 to each other. In addition, the degree of adhesion between the packing body 1 and the main pipe 30 (near the tightening) becomes insufficient, and sufficient water tightness cannot be achieved. In addition, the thickness of the packing body 1 is increased, the weight is heavy and expensive, and the outer diameter is excessively large.
[0019]
Accordingly, when the angle θ is 45 ° to 80 °, the tightening force G can be converted into the pressing force F, and the pressing force F presses the packing body 1 against the main pipe 30, and the packing body 1 and the main pipe 30 ( The degree of adhesion between the vicinity of the tightening) and between the packing body 1 and the joint body 2 (near the tightening) is sufficient, and high water tightness can be obtained.
[0020]
FIG. 5 (a) shows an operation explanatory diagram of the tightened state of the first joint half 5 and the second joint half 6, and the first joint half 5 and the second joint half by the bolt 11 and the nut 12 are shown. 6 is converted into a pressing force F of the pressing gradient surfaces 5c and 6c against the gradient surfaces 3c and 4c, and the pressing force F presses the packing body 1 against the main pipe 30. At this time, when the bolt 11 and the nut 12 are sufficiently tightened, the closed annular ridge portions 10 and 10 (see FIG. 3) are deformed by elastic deformation, and the packing body 1 and the main pipe 30 are deformed. This further increases the degree of adhesion. In addition, since the packing body 1 tightly surrounds the main pipe 30, the second packing half body 4 that bears the reaction force punctures (see Fig. 1 (b)). The deformation of the main pipe 30 at the time can be prevented.
[0021]
Next, FIG. 5 (b) shows an operation explanatory view by water pressure after drilling. After drilling, the forming end surface 8 receives a pressing force P by water pressure, but the forming end surface 8 is applied to the outer surface 3 a of the first packing half 3. The first packing half 3 is pushed into the gap 9 between the outer surface 30b of the main pipe 30 and the inner surface 2b of the joint body 2 by this pressure reception of the forming end surface 8 because it is formed so as to face substantially right angle to the surface. It becomes like this. The elastic deformation of the first packing half 3 generates a pressing force R against the outer surface 30b of the main pipe 30 and the inner surface 2b of the joint body 2, and between the packing body 1 and the main pipe 30, and between the packing body 1 and the joint body. The adhesion degree between the two is further increased. Thus, the higher the water pressure is, the higher the degree of adhesion is, so that water leakage can be effectively prevented.
[0022]
In addition, this invention is not limited to the above-mentioned embodiment, For example, you may divide the packing body 1 and the coupling main body 2 into three instead of two, and the 1st packing half 3 on the branch side. Further, only the first joint half 5 may be provided with the gradient surface 3c and the pressing gradient surface 5c, and the design can be freely changed without departing from the gist of the present invention.
[0023]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0024]
Since the packing body 1 and the joint body 2 are used (according to the continuous water branch joint according to the first aspect ) , the structure is simple and the mounting is easy. Further, since the first packing half 3 and the second packing half 4 are configured to closely surround the main pipe 30, the main pipe 30 can be prevented from being deformed during drilling, and further, a water hammer or the like can be used. Absorbs vibration, prevents damage, and has a long life. And since the gradient surfaces 3c and 4c and the press gradient surfaces 5c and 6c are formed, the contact degree is further increased and water leakage can be prevented more effectively.
[0025]
Since the packing body 1 and the joint body 2 are used (according to the continuous water branch joint according to claim 2 ), the structure is simple and the mounting is easy. Further, since the first packing half 3 and the second packing half 4 are configured to closely surround the main pipe 30, the main pipe 30 can be prevented from being deformed during drilling, and further, a water hammer or the like can be used. Absorbs vibration, prevents damage, and has a long life. The formed end face 8 is formed so as to face substantially the right angle with respect to the outer surface 3a of the first packing half 3, and receives elastic pressure to the gap portion 9 between the outer surface 30b of the main pipe 30 and the inner surface 2b of the joint body 2. In addition, since it is configured to be pushed in while being compressed and the gradient surfaces 3c and 4c and the pressure gradient surfaces 5c and 6c are formed, water leakage can be prevented more effectively.
[0026]
(According to the continuous water branch joint according to claim 3 ), if the angle θ exceeds 80 °, sufficient adhesion cannot be obtained, and there is a possibility of water leakage, and if the angle θ is less than 45 °, The thickness is further increased, the weight is heavier, and the outer packing is an expensive packing body 1 that cannot be expected to prevent water leakage when the water pressure increases. However, when the angle θ is 45 ° to 80 °, the degree of adhesion increases, and excellent water tightness can always be exhibited.
[0027]
(According to the continuous water branch joint according to claim 4 ), since the closed annular ridge portion 10 is provided, the degree of adhesion is further increased and water leakage can be more effectively prevented.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an explanatory view of use showing an embodiment of a continuous water branch joint of the present invention.
FIG. 2 is a perspective view of a packing body.
FIG. 3 is a front sectional view of a continuous water branch joint.
FIG. 4 is a side sectional view of a continuous water branch joint.
FIG. 5 is an explanatory view of the main part action.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Packing body 2 Joint main body 2b Inner surface 3 1st packing half 3a Outer surface 3b Inner surface 3c Gradient surface 3d End surface 4 Second packing half 4a Outer surface 4c Gradient surface 4d End surface 5 First joint half 5c Pressing gradient surface 6 Second joint Half body 6c Pressing gradient surface 7 Hole 8 Forming end surface 9 Gap
10 Closed ring ridge
30 main
30b Outer surface X Boundary surface θ angle

Claims (4)

  In an uninterrupted water branch joint having a joint body 2 attached to an existing main pipe 30 via a packing body 1, the packing body 1 includes a pair of first packing halves 3 and a second packing half 4. The first packing half 3 and the second packing half 4 are arranged so as to closely surround the main pipe 30 by arranging their end faces 3d and 4d so as to face each other. 2 includes a pair of first joint halves 5 and a second joint half 6, and the first packing half 3 is attached to the first joint half 5 on the branch side, and the second joint half 6 is attached to the second joint half 6. The second packing half 4 is attached, and the thickness of the first packing half 3 and the second packing half 4 is increased as it approaches the end faces 3d, 4d, and in the vicinity of the end faces 3d, 4d. Slope surfaces 3c, 4c are formed on the outer surfaces 3a, 4a, and the slope surfaces 3c, 4c Corresponding to 4c, a continuous water branch joint in which pressure gradient surfaces 5c, 6c are formed on the inner surface 2b of the joint body 2.   In an uninterrupted water branch joint having a joint body 2 attached to an existing main pipe 30 via a packing body 1, the packing body 1 includes a pair of first packing halves 3 and a second packing half 4. The first packing half 3 and the second packing half 4 are arranged so as to closely surround the main pipe 30 by arranging their end faces 3d and 4d so as to face each other. A branch pipe hole 7 is formed in the packing half 3, and a forming end surface 8 of the hole 7 is formed so as to be substantially perpendicular to the outer surface 3 a of the first packing half 3. The joint body 2 is configured to be pushed into the gap 9 between the outer surface 30 b of the main pipe 30 and the inner surface 2 b of the joint body 2, and the joint body 2 includes a pair of first joint half 5 and second joint half 6. And attaching the first packing half 3 to the first joint half 5 on the branch side, The second packing half 4 is attached to the two joint halves 6, and the thicknesses of the first packing half 3 and the second packing half 4 are increased as they approach the end faces 3d and 4d, Gradient surfaces 3c and 4c are formed on the outer surfaces 3a and 4a in the vicinity of the end surfaces 3d and 4d, and pressure gradient surfaces 5c and 6c are formed on the inner surface 2b of the joint body 2 corresponding to the gradient surfaces 3c and 4c. An uninterrupted water branch joint. The continuous water according to claim 1 or 2 , wherein the inclined surfaces 3c and 4c are formed so as to have an angle θ of 45 ° to 80 ° with respect to the boundary surface X of the first joint half 5 and the second joint half 6. Branch joint. The continuous water branch joint according to claim 2 or 3 , wherein a closed annular ridge 10 is provided on an inner surface 3b of the first packing half 3 around the branch pipe hole 7.

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