JP2011043228A - Branch valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a branch valve capable of increasing the range of piping design and allowing efficient construction work. <P>SOLUTION: As a piping member provided to be openable and closable, a water stop valve 3 is integrated with a branch base portion between a water hole 21 through which a branch tee passes and a branch water hole 22 perpendicularly branching therefrom, to eliminate intervening members such as pipe nipples so as to reduce the number of part items, while reducing a surface-to-surface distance to reduce the weight of the branch valve. Also, since a flow passage at a branch section can be formed as a flow passage with a smooth curved surface without creating differences in height, foreign matter can be completely removed during sludge removal. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a branch valve that is used in a branch portion when a pipe is branched from a water main, and can be used as a mud valve or a branch cheese at the initial setting in a new pipe.

  Conventionally, when branching a pipe from a water main, it is necessary to set a water stop valve body to control water supply to the branch pipe, and branch pipes have been made using branch cheese and a water stop valve. However, adjustment of the handle position of the water stop valve has been performed by tightening a screw of a pipe nipple (short pipe) and a screwed pipe interposed between the branch cheese and the water stop valve.

  When branching from an existing water main, install a saddle joint or split T-shaped pipe on the outer peripheral surface of the water main while maintaining water tightness, then open the water stop valve and open them. It has been carried out by inserting a cutter of a perforator from the part and perforating a diversion hole on the mating surface of the water main of the mounting member.

  Furthermore, in the branch structure part in the newly installed pipe, a drainage function as a drain at the time of initial water supply is necessary, and the smooth drainage function obstruction due to the step structure of the branch channel part is also a problem.

  About the water stop mechanism for water supply control of a branch piping structure part, as disclosed in Patent Document 1, a hollow body part is communicated with the inside of the body part so as to be inserted through a shielding plate. And a branch valve that is integrally formed with the one side opening of the body part and is provided with a fitting part that is fused to the outer peripheral surface of the main pipe, or at the opening of the saddle body that is fixed to the outer peripheral surface of the main pipe. As disclosed in Patent Document 2, a seal member that surrounds and seals the branch port of the main pipe is installed, a valve storage portion is provided at the upper portion of the opening portion, and a water supply port that connects the water supply pipe is provided at the upper portion of the valve storage portion. A branch valve has also been proposed.

Further, after fitting a joint having a branch port portion on the outer peripheral surface of the fluid pipe, a branch port communicating with the branch port portion is drilled in the fluid pipe, and the tip of the branch hole contacts the inner wall of the fluid pipe. A method has also been used in which a reinforcing pipe having a plurality of cutout holes is press-fitted and a fluid is branched into a branch pipe connected to the branch port.
JP 2003-156187 A JP-A-8-338586 Japanese Patent No. 3806216

  For the method of setting a water stop valve on the branch pipe side through a pipe nipple (short pipe) in the conventional water main, the pipe nipple (short pipe) is placed between the branch cheese and the water stop valve. ) Is extremely troublesome, and it requires a high level of technology and is extremely difficult to work in a narrow place.

  In addition, since the water stop valve must be set via a pipe nipple (short pipe), there is a problem that the number of parts increases and the distance between surfaces becomes long. In addition, since the position of the water stop valve is adjusted by the tightening allowance of the screw of the threaded piping, there remains a problem in that it is easy to cause an accident such as water leakage due to immature connection work.

  Furthermore, after mounting a saddle joint or a split T-shaped pipe on the outer peripheral surface of the water main pipe while maintaining watertightness, the water stop valve is opened, and a water split hole is formed on the mating surface of the water main pipe of the mounting member. In the drilling method, the same inner diameter branch diameter as the main water pipe cannot be secured, so a dedicated tool such as a drilling machine is required, and a step is generated in the drilling part, and foreign matter is completely removed during mud discharge. There was also a problem that it was not possible.

  The present invention is intended to address the above-described problem, and a water stop valve body is provided so as to be openable and closable at a water passage hole penetrating the branched cheese and a branch base portion of the water branch hole branched perpendicularly thereto. By integrating it as a piping member, the design of the piping as a branch valve has been greatly expanded and construction work can be performed efficiently.

  As described above, since the branch cheese and the water stop valve are integrated as described above, there are no intervening members such as pipe nipples, the number of parts is reduced, the distance between the faces is shortened, and the weight as the branch valve is light. It became.

Due to the shortening of the distance between the surfaces and the reduction of the weight of the member, it has become possible to work in a narrow place where work has been difficult until now.
Furthermore, since the screwing work for the pipe joint is reduced, the pipe work time is greatly shortened, and the occurrence of accidents such as water leakage is naturally reduced due to the reduction in the number of joints.

  Moreover, since the branch cheese and the valve box of the water stop valve are integrally formed, the flow path of the branch water passage through which the branch cheese penetrates and the side water passage hole that branches perpendicularly to the water passage hole are also stepped. Since it can be formed in a smooth curved flow path without causing any foreign matter, foreign matter can be completely removed during mud discharge.

The example of the branch valve by this invention is shown, The longitudinal cross-sectional front view of the branch valve at the time of the water stop valve opening which shows the cross flow path structure of the flow path of a cheese joint part and the water flow path of a water stop valve body part Similarly, a longitudinal sectional front view of the branch valve of FIG. 1 when the water stop valve is closed Similarly, right side view of the branch valve in FIG. Similarly, a plan view of the branch valve of FIG. Similarly, the entire cross-sectional view of the buried setting construction part showing the mud discharge path when the branch valve according to the present invention is set buried Similarly, a longitudinal sectional front view of a branch valve according to a conventional example in which a cheese joint and a water stop valve are joined via a short pipe Similarly, after installing a saddle joint on the outer peripheral surface of the water main, a longitudinal branch of the branch valve according to the conventional example in which a water splitting hole is formed in the fitting surface between the mounting member and the water main and a water stop valve body is joined. Front view

  Hereinafter, the embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 denotes a valve box body, in which a valve chamber of a cheese portion 2 and a water stop valve 3 is integrally formed. A through water passage hole 21 and a branch water passage hole 22 branched in a direction perpendicular to the through water passage hole are formed in a T shape.

  At the branch base portion of the branch water passage hole 22, a water stop valve 3 that is moved up and down by the rotation of the handle 31 to open and close the flow path of the branch water passage hole 22 is set. The joint portions 21a and 21b that are screwed to the end of the main pipe P, and the end portion of the branch water passage hole 22 are also the joint portions 22a that are screwed to the branch pipe R, and are directly connected to the piping path. It is configured to be incorporated.

  In the branch valve configured as described above, the main pipe P is joined to the joint portions 21a and 21b to form the main flow path, and the branch pipe R is joined to the joint portion 22a to separate the water from the main pipe. In addition to being used for forming the branch pipe flow path, it is used for forming the branch flow path in the drain terminal portion of the buried pipe as shown in FIG.

  In FIG. 5, B is a manhole box buried in the ground, a branch valve according to the present invention is set at the bottom thereof, and the branch pipe R joined to the joint 22a is joined to the drain pipe D communicating with the drain side groove W. To do. When sludge accumulates in the through water passage hole 21, when the water stop valve body 3 of the branch valve that is normally closed is opened, the accumulated sludge flows into the branch pipe R by the water supply pressure of the through water passage hole 21, and the drain pipe D It is discharged to the drainage gutter W.

  When the branch valve according to the present invention is compared with the conventional example, the conventional example is screwed with the cheese joint T via the short pipe S as shown in FIG. In addition to being adjusted while adjusting the screw tightening of the short pipe S and the branch pipe R that are jointed to both sides of the flow path, the above-mentioned configuration of the present invention reduces the distance between the faces by the short pipe, Since the cheese portion 2 and the water stop valve chamber 32 are fixedly formed, it is not necessary to adjust the handle position of the water stop valve 3.

  FIG. 7 shows a conventional example in which saddle joints C1 and C2 are mounted on the outer peripheral surface of the water main pipe P, and a water diverting hole H is formed on the mating surface with the water main pipe and the water stop valve 3 is joined. However, the distance between the surfaces becomes long and the number of parts increases, which leaves problems in both work efficiency and setting space. In particular, when used for the above-mentioned drain pipe branch, there is a problem that a step is formed in the portion where the water diversion hole H is formed, and foreign matter cannot be completely removed.

Example 1 as an embodiment of the present invention will be described with reference to the drawings.
A valve chamber constituting portion 11a is formed in the upper surface of the branch base portion of the valve box body 1 configured in a T shape, and a valve chamber lid body portion 11b that inserts and supports the water stop valve unit is screwed into the water stop valve unit. A branch valve as a member is configured by mounting and fixing 33.

  As shown in FIG. 1, the valve box body 1 having the basic structure as described above is formed into a curved surface structure having no step as shown in FIG. While preventing the accumulation of sludge, the drainage function by the drain pipe is enhanced.

  The joint portions 22a for joining the joint portions 21a and 21b of the cheese portion 2 and the branch pipe R are joined to the water main pipe P and the branch pipe R, respectively. If it makes it, piping joining work can be performed very efficiently.

  Since the present invention is configured as described above, it can be arranged as a T-shaped branch cheese used for a branch portion in designing water pipes, and can be freely designed without considering the installation space of the stop cock. As a water pipe member that is lightweight and easy to join with each pipe, it has a high utility value on the water supply industry.

DESCRIPTION OF SYMBOLS 1 Valve box main body 11a Valve chamber structure part 11b Valve chamber cover body part 2 Cheese part 21 of valve box main body Penetration through hole 21a of valve box main body Piping joint part 21b of valve box main body through water passage Valve box main body through water passage Piping joint portion 22 of the valve body Branch water passage hole 22a of the valve box body Piping joint portion 3 of the valve body through water passage hole Water stop valve 31 Water stop valve operation handle 32 Water stop valve chamber 33 Water stop valve unit B Manhole box C1 Saddle joint C2 Saddle joint D Drain pipe H Divider hole P Water main pipe R Branch pipe S Short pipe T Cheese joint W Drainage side groove

Claims (2)

  A branch valve characterized in that a water stop valve body is provided so as to be openable and closable at a branch base portion of a water passage hole through which the branch cheese passes and a branch water passage hole that branches perpendicularly thereto.   2. The branch valve according to claim 1, wherein the branch cheese-shaped valve box main body for accommodating the water stop valve body is formed by integral molding.

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