JP5839462B2 - Branch pipe device - Google Patents

Description

  The present invention includes a fluid passage connected to a fluid pipe and having a fluid passage communicating with the fluid pipe and a branch passage communicating with the fluid passage formed therein, and the fluid passage and the branch disposed in the tubular body. The present invention relates to a branch pipe device provided with a valve body that switches between opening and closing of a road.

  A conventional branch pipe device is provided with a valve body at the intersection of a straight pipe part (fluid path) and a branch part (branch path) of a T-shaped branch pipe (pipe body). It opens in parallel, rotates when necessary, cuts off the straight pipe section diagonally, and only one running water communicates with the branch section and discharges impurities in the running water (for example, see Patent Document 1).

Japanese Unexamined Patent Publication No. 2002-161559 (first page, FIG. 1)

  However, in Patent Document 1, there is a problem that the impurities in the running water flow downstream until the valve body is operated and the straight pipe portion is shut off. In this case, there is a consideration that the liquid stays in the lower part of the straight pipe portion and cannot be discharged.

  The present invention has been made paying attention to such a problem, and provides a branch pipe device that can remove foreign matters by allowing fluid to flow into a fluid path and discharge the fluid without stagnating. With the goal.

In order to solve the above-mentioned problem, the branch pipe device of the present invention includes:
A fluid pipe connected to the fluid pipe and having a fluid path communicating with the fluid pipe and a branch path communicating with the fluid path formed therein; and switching between opening and closing of the fluid path and the branch path disposed in the pipe body A branch pipe device comprising:
The branch path is provided below the fluid path, and precipitates for depositing impurities in the fluid flowing through the fluid path, and communicates with the settling section, together with the fluid flowing through the branch path, to the settling section. A deriving part that allows debris that has settled out to be derived out of the branch path;
The valve body is a substantially spherical valve body having communication holes that can communicate in three directions with the upstream side, the downstream side, and the settling part of the fluid path in a fully opened state, and the fluid path and the settling part communicate with each other. It is arranged to be able to rotate at the communication point that
By rotating the valve body , the downstream side of the fluid path is closed by closing one of the upstream side, the downstream side, and the settling portion , and the upstream side or the downstream side. Or it is characterized by switching open and close to the state which connects the said upstream one side and the said sedimentation part .
According to this feature, the contaminants in the fluid flowing in the fluid path can be precipitated in the sedimentation portion formed in the branch path. By utilizing the momentum of the fluid flowing through the path, the settled contaminants can be discharged to the outside through the lead-out portion without staying.

The branch pipe device of the present invention is
The end opening of the lead-out portion is provided with a plug member that can lead out or close the fluid from the end opening.
According to this feature, the stopper member is provided at the end opening of the outlet part that is the outlet of the branching path, so that the sedimentation part of the branching path can always be opened and impurities can be always settled. When closed, foreign matter can be prevented from entering the branch path from the end opening of the lead-out portion, and when opened, the settled impurities can be discharged together with the fluid from the end opening of the lead-out portion.

The pipeline structure of the present invention is
A pipe structure including a plurality of branch pipe devices of the present invention,
The plurality of branch pipe devices are characterized in that the fluid paths are connected to each other via a fluid pipe.
According to this feature, in the pipe structure, a plurality of branch pipe devices are configured in series along the fluid path, and contaminants can be precipitated in an appropriate settling portion that is present in plural and discharged through the lead-out portion. Eliminates the removal of foreign objects.

The pipeline structure of the present invention is
The plurality of branch pipe devices are provided with bypass pipes communicating with each other.
According to this feature, the fluid paths between the plurality of branch pipe devices are closed, the branch paths are opened, and the bypass pipe bypasses the fluid so that the fluid paths of the branch pipe devices communicate with each other. It is possible to perform replacement such as pipe replacement with the fluid pipe that has been cut off.

It is a side view which shows the pipe line structure where two or more branch pipe apparatuses were interposed. It is a side view which shows the state which provided the interruption section in the pipe line structure in FIG. (A) is a front view which shows a branch pipe apparatus, (b) is a side view similarly. (A) is sectional drawing of a branch pipe apparatus, (b) is a sectional side view similarly. (A) is a sectional side view showing the fully opened state of the fluid passage and the branch passage, and (b) is a main part enlarged view showing the display of the pattern A of the branch pipe device and the display board. (A) is side sectional drawing which shows the obstruction | occlusion state of the fluid path 4a, (b) is a principal part enlarged view which similarly shows the top view of a branch pipe apparatus, and the display of the pattern B of a display board. (A) is a sectional side view showing a closed state of the branch path 5, and (b) is a plan view of the branch pipe device and an enlarged view of a main part showing display of a pattern C on the display board. (A) is side sectional drawing which shows the obstruction | occlusion state of the fluid path 4b, (b) is a principal part enlarged view which similarly shows the top view of a branch pipe apparatus, and the display of the pattern D of a display board. It is a figure which shows the state which laid the bypass pipe in the branch pipe apparatus before and behind a disconnection area. It is a figure which shows the state by which all the outlets of the branch pipe apparatus in the pipeline area | region G were open | released. It is a figure which shows the state by which only the outlet of the branch pipe apparatus of the terminal in the pipeline area | region G was open | released.

  EMBODIMENT OF THE INVENTION The form for implementing the branch pipe apparatus which concerns on this invention is demonstrated below based on an Example.

  The branch pipe device 3 according to the embodiment will be described with reference to FIGS. 1 to 11.

  FIG. 1 is used, for example, for waterworks, and in this embodiment, a pipe structure that constitutes a fluid pipe network in which members such as a plurality of fluid pipes 1, branch pipe devices 3, and fire hydrants 9 are arranged in a substantially mesh shape. 2 is shown. In this pipe structure 2, the branch pipe devices 3 are connected to each other via the fluid pipe 1, and in this embodiment, the fluid flowing through the pipe structure is directed from the upstream side on the left side to the downstream side on the right side in the figure. Suppose that it is flowing. The above-mentioned fluid pipe network includes not only a single flow path but also a plurality of fluid pipes 1, fluid pipes 1 a, and the like connected to form a plurality of flow paths from the upstream side to the downstream side. means. For example, in FIG. 1, the flow path by the fluid pipe 1 and the other flow by the fluid pipe 1a span the hydrant 9 on the upstream side on the left side of the figure and the hydrant 9 on the right side of the fire hydrant 9 in the figure. Assume that the road is constructed.

  The fluid pipe 1 and the branch pipe device 3 are made of concrete, reinforced concrete, asbestos, ductile cast iron, other cast iron, steel, vinyl chloride, polyethylene, polyolefin, or the like, and the fluid pipe 1 or the branch pipe device 3 is made of metal. In this case, a coating layer (not shown) is formed of mortar or rust preventive paint as a rust preventive treatment for preventing rust from fluid. In this embodiment, the fluid in the fluid pipe is clean water, but the fluid flowing in the fluid pipe is not necessarily limited to clean water. For example, in addition to industrial water, sewage, etc., gas or liquid of gas or gas and liquid It may be a mixture.

  As shown in FIG. 4, the branch pipe device 3 includes a pipe body 7 in which a fluid path 4 that communicates with the fluid pipe 1 and a branch path 5 that communicates with the fluid path 4 are formed. And a valve body 6 for switching between opening and closing in the branch path 5. Further, a flange portion 8 is formed in the end opening 5c of the tube body 7 in which the branch path 5 is formed, and a buried depth adjusting flange short tube 10 connected to the flange portion 8 is provided. A fire hydrant 9 that can lead out or close the fluid from the end opening 5c is provided. More specifically, the fire hydrant 9 includes a discharge port 9a that communicates with the end opening 5c of the outlet 5b, an operation valve 9b that can open or close the discharge port 9a, and a cap 9c that closes the discharge port 9a. Yes. That is, by closing the outlet 9a serving as the outlet of the branch path 5 with the cap 9c and closing the operation valve 9b, foreign matter can be prevented from entering the branch path 5 from the outlet 9a. Further, by removing the cap 9c from the outlet 9a and opening the operation valve 9b, the fluid can be discharged from the outlet 9a. Further, the tube body 7 and the short flange tube 10 are connected in a sealed manner by bolts, nuts and seal members (not shown), and the short flange tube 10 and the fire hydrant 9 are also connected in a sealed manner in the same manner as described above.

  In this pipe structure 2, in each of the installed branch pipe devices 3, the fluid path 4 and the branch path 5 are normally open, and the cap 9c that has blocked the outlet 9a of the fire hydrant 9 is removed. The fluid can be released to the outside by opening the operation valve 9b.

  Further, as shown in FIG. 2, a pipe structure 2 a in which a breakage section E is formed can be obtained by closing the sections of the two branch pipe devices 3 a and 3 b with the valve body 6. The branch pipe devices 3 in the pipe structure 2a are communicated with each other through another flow path (not shown) by the fluid pipe network described above. Therefore, since the pipe structure 2a can maintain an uninterrupted state except for the disconnection section E by the fluid pipe network even if the disconnection section E is formed in part, the disconnection section is defined as the disconnection section E only. The operation such as replacement or repair of the fluid pipe 1 in the section E can be easily performed.

  Next, the branch pipe device 3 will be described in detail. First, the pipe body 7 of the branch pipe device 3 will be described. As shown in FIG. 4, the fluid path 4 and the branch path 5 of the pipe body 7 are constituted by a continuous pipe wall 7a and an outer wall 7c. Below the tube wall 7a and the outer wall 7c, there are provided leg portions 12 on which the tube body 7 is erected. For example, when the branch pipe device 3 is used as a pipe in a factory or the like, the leg 12 can be made to stand on the floor or the like.

  The fluid path 4 of the branch pipe device 3 is communicated between the two fluid pipes 1 connected to both sides of the branch pipe device 3 in a substantially straight line, and is formed by a pipe wall 7a having a substantially circular cross-sectional view. The branch path 5 communicates downward via a communication portion 11 formed at the lower part of the central portion of the fluid path 4 in the tube axis direction, and further covers a part of the outer surface of the central tube wall 7a to the upper side. It is formed by the outer wall 7c extended in the substantially spiral direction. That is, the branch path 5 is formed by a part of the outer surface of the tube wall 7a and the inner surface of the outer wall 7c, and extends upward from the lower side of the fluid path 4 in a spiral curve shape so as to surround the substantially half circumference of the fluid path 4. . In addition, this pipe body is not restricted to this embodiment, for example, a fluid path communicating with a single fluid pipe may be provided, or a branch path is formed in two or more directions, and from the fluid path in various directions. It may be formed toward the surface and can be applied to a wide variety of modes.

  The branch passage 5 will be described in detail. The pipe body 7 is provided below the fluid passage 4 via the communication portion 11 and precipitates contaminants in the fluid flowing through the fluid passage 4, and the precipitation portion 5a. The lead-out part 5b is configured to communicate with the fluid flowing through the branch path 5 and to allow the foreign matter precipitated in the settling part 5a to be led out of the branch path 5. The sedimentation part 5a is a part located below the fluid path 4 in the branch path 5, and the lead-out part 5b is a part located above the sedimentation part 5a in the branch path 5.

  According to this, since the contaminants in the fluid flowing through the fluid passage 4 can be precipitated by the weight in the sedimentation portion 5a formed in the branch passage 5, the contaminants in the fluid can be removed without using a special device. In addition to being able to remove and purify the contaminants from the fluid, the sedimentation portion 5a can be used to remove the contaminants from the fluid. Then, it can be discharged to the outside along with the fluid through the flange short tube 10 and the fire hydrant 9. Further, at this time, since the branch path 5 extends upward on the spiral curve, it has a structure in which impurities do not easily stay.

  Moreover, in the joint part of the pipe body 7 and the fluid pipe | tube 1, each is sealingly connected by the volt | bolt nut which is not shown in figure, and the sealing member. In addition, the shape of the joint part of the pipe body and the fluid pipe may be constituted by a receiving shape or an insertion shape, or may be connected by providing a flange at the end portion. It can be set as appropriate.

  In the tubular body 7, the valve body 6 is disposed at a communication portion 11 where the fluid path 4 and the branch path 5 communicate with each other, and the valve body 6 opens and closes the fluid path 4 and the branch path 5 at the communication portion 11. The state can be switched. The communication portion 11 has a slightly enlarged inner peripheral surface of the tube body 7 so that the valve body 6 can be rotatably installed. The tube wall 7a facing the outer wall 7c at the communication portion 11 is substantially horizontal. A projecting portion 7b that penetrates inward and outward in the direction and projects outward is provided. The protruding portion 7b is installed as an insertion port, and an operation shaft 14 that engages with the valve body 6 is provided. That is, the operating shaft 14 is installed so as to penetrate through the communication portion 11 and the outside of the tube wall 7a via the protruding portion 7b.

  Next, the operation shaft 14 will be described. An outer end portion 14a of the operation shaft 14 extends in a substantially cylindrical shape having a relatively small diameter, and a turning mechanism 15 such as a worm gear meshes with a peripheral surface in the vicinity of the end portion 14a of the operation shaft 14. Attached. Further, a spindle 16 that rotates the operating shaft 14 via the direction changing mechanism 15 extends upward. Further, the end portion 14 b on the communication portion 11 side of the operation shaft 14 has a substantially rectangular shape that engages with the valve body 6.

  The end 14 a side of the operation shaft 14, that is, the side exposed outward from the communication location 11 is closed in a sealed manner by the case body 17, and three display lines 17 a, 17 b, 17 c are formed on the upper surface of the case body 17. Is formed. The display line 17a is shown as a fluid passage 4a on the left side of the drawing with the communication point 11 as a boundary in FIG. 5A, the display line 17b is shown as a branch passage 5, and the display line 17c is a fluid on the right side of the drawing. Shown as path 4b.

  Further, a display plate 19 for displaying the open / closed state of the fluid passage 4 and the branch passage 5 is attached to the extension of the end portion 14 a of the operation shaft 14. By fitting the end portion 14a of the operation shaft 14 into the through hole 22 formed in the substantially central portion of the display plate 19, the display plate 19 is pivotally supported by the end portion 14a. It rotates in synchronization with the valve body 6 via the shaft 14. Further, the nut 18 is attached to the end portion 14a, thereby preventing the display plate 19 from falling. In addition, on the peripheral surface of the display plate 19, patterns A, B, C, and D indicating the open / closed states of the fluid passage 4 and the branch passage 5 are formed at a pitch of approximately 90 degrees. The operation in which the display plate 19 displays the open / close state of the fluid path 4 and the branch path 5 will be described in detail later.

  Next, the valve body 6 will be described. The valve body 6 of the present embodiment is a substantially spherical valve body used as a so-called ball valve, and includes a fluid path 4 communicated with each of the two fluid pipes 1. It has a communication hole 6a that communicates with the branch path 5 in three directions, and a recess 6b formed in the outer peripheral surface of the valve body 6, and rotates in the communication location 11 so that the fluid path 4 and the branch path 5 Open / close switching is performed.

  The case where the valve body 6 is operated by the operation shaft 14 will be described. First, the valve body 6 and the operation shaft 14 are engaged with the end portion 14b of the operation shaft 14 in the recess 6b formed in the valve body 6. . Next, when the spindle 16 is rotated about the vertical axis, the turning mechanism 15 converts the rotation to a horizontal axis rotation, the operation shaft 14 is rotated, and is fitted to the end 14 b of the operation shaft 14. The valve body 6 is rotated by interlocking. As the valve body 6 rotates in this manner, the direction of the communication hole 6a of the valve body 6 changes, whereby the fluid path 4 and the branch path 5 are opened and closed. That is, the tube body 7 is provided with the operation shaft 14 that engages with the valve body 6 and opens and closes the valve body 6 from the outside of the tube body 7, so that the valve body 6 can be operated directly. Opening and closing operations can be easily performed from the outside of the tube body 7. For the turning function, for example, a mechanism for changing the direction of rotation of a bevel gear or the like may be used. Further, the valve body is not limited to the three-way branch ball valve of the present embodiment.

  As described above, the operating shaft 14 and the valve body 6 are rotated in conjunction with each other by turning the spindle 16. Therefore, the display board 19 pivotally supported by the end portion 14a of the operation shaft 14 is also rotated in conjunction with the same manner.

  Next, the operation in which the display plate 19 displays the open / closed state of the fluid path 4 and the branch path 5 will be described in detail.

  As shown in FIG. 5A, the fluid path 4 includes a left fluid path 4 a with the communication location 11 as a boundary and a right fluid path 4 b with the communication location 11 as a boundary. Further, the valve body 6 has a communicating wall 6a communicating with the fluid passages 4a, 4b and the branch passage 5, and a stop wall portion 13 that blocks the upper passage when the fluid passages 4a, 4b and the branch passage 5 are fully opened. A blocking portion 6c located on the side is provided. Thus, when the fluid paths 4a, 4b and the branch path 5 are fully opened, the display board 19 is connected to the fluid paths 4a, 4b and the branch path as shown in the enlarged portion of FIG. 5 A pattern A displaying all fully open states is directed upward.

  When the display plate 19 rotates the spindle 16 approximately 90 degrees from the state of the pattern A, as shown in FIG. 6 (a), the valve body 6 is rotated to connect the communication hole 6a to the branch path 5 and the fluid path 4b. It comes to communicate with the stop wall 13 in the direction. That is, the fluid path 4a is closed by the closing portion 6c of the valve body 6, and in this case, as shown in the enlarged portion of FIG. 6B, the display board 19 matches the display line 17a. A pattern B which has a line and displays a state in which only the fluid path 4a is closed is directed upward.

  7A, the spindle 16 is further rotated approximately 90 degrees from the state where the display plate 19 is in the pattern B, the valve body 6 is rotated, and the communication hole 6a is formed between the fluid passages 4a and 4b and the stop wall portion 13. It shows a state of communication in the direction. That is, the branch path 5 is blocked by the blocking portion 6c. In this case, as shown in the enlarged portion of FIG. 7B, the display board 19 has a line that matches the display line 17b. A pattern C displaying a state in which only the branch path 5 is closed faces upward.

  In FIG. 8A, the spindle 16 is further rotated approximately 90 degrees from the state where the display plate 19 is in the pattern C, the valve body 6 is rotated, and the communication hole 6a becomes the fluid passage 4a, the branch passage 5, and the stop wall portion 13. It shows a state of communication in the direction. That is, the fluid passage 4b is closed by the closing portion 6c. In this case, as shown in the enlarged portion of FIG. 8B, the display board 19 has a line that matches the display line 17c. The pattern D displaying the state in which only the fluid path 4b is closed faces upward.

  By rotating the spindle 16 in this manner, the operation shaft 14, the valve body 6 and the display plate 19 are simultaneously rotated in conjunction with each other. Therefore, the display of the patterns A, B, C and D on the display plate 19 and the display lines. The open / close state of the fluid path 4 and the branch path 5 can be appropriately set while confirming the states of 17a, 17b, and 17c.

  The branch pipe device 3 is configured as described above. Next, a description will be given of an aspect of a pipe line structure including a plurality of branch pipe devices 3.

  FIG. 9 shows an aspect of the pipe structure 2b in which a section F that is in a disconnected state is formed by closing the sections of the two branch pipe devices 3c and 3d in the pipe structure 2 by the valve body 6. Has been. The pipe structure 2b is communicated with other flow paths (not shown) by a fluid pipe network, and a bypass pipe 20 is installed at the outlet 9a of the fire hydrant 9 connected to the extensions of the branch pipe devices 3c and 3d. Has been.

  Therefore, the pipe structure 2b is not only in a non-discontinuous state except for the section F by the other fluid pipe 1a in the fluid pipe network even if the section F in the disconnected state is formed, but also in the mutual branch paths 5 In the section F, water can be supplied from the bypass pipe 20 by allowing the bypass pipe 20 to bypass the fluid in the open state. Furthermore, while the pipe structure 2b is in an uninterrupted state as described above, it is possible to perform pipe replacement or the like by setting the fluid pipe 1 communicating with each other's fluid path 4 of the branch pipe devices 3c and 3d to a disconnected state. .

  Although not particularly shown, in the case of a single fluid channel in which a fluid flows only in a single channel from the upstream side to the downstream side, when performing pipe replacement or the like in the section of the branch pipe devices 3c and 3d The section F on the downstream side of the branch pipe device 3c on the upstream side and the downstream side thereof are completely disconnected, but the bypass pipe 20 is installed so that the section F in the pipe structure 2b is provided. The downstream side can be formed in a continuous flow state. Further, in the section F, water can be supplied from the bypass pipe 20, and the section F can be formed in an uninterrupted flow state.

  Next, the modes of FIGS. 10 and 11 will be described. As shown in FIG. 10 and FIG. 11, a pipe structure 2c in which a plurality of branch pipe devices 3 are interposed is formed with respect to the fluid pipe network or the fluid single pipe described above, and this pipe structure 2c. The branch pipe devices 3 are connected to each other via the fluid pipe 1. In the pipe structure 2c, a plurality of branch pipe devices 3 are provided with a pipe region G that is a section between any plurality of branch pipe devices 3, and this pipe region G is formed on the downstream side. The downstream side of the branch pipe device 3e is closed by the valve body 6 of the branch pipe device 3e located at the end of the branch pipe device 3e.

  Referring to the embodiment of FIG. 10, the branch passages 5 of the respective branch pipe devices 3 in the pipe region G configured in the above manner are all open, and further, the outlet 9 a of the fire hydrant 9 is provided. Both are opened by the operation valve 9b. That is, all the communicating holes 6a of the valve body 6 of the branch pipe device 3 excluding the branch pipe device 3e are open in three directions, and the fluid is discharged from the respective outlets 9a.

  As a result, a plurality of branch pipe devices 3 are configured in series along the fluid path 4 in the pipe region G of the pipe structure 2c, and impurities are settled in the appropriate settling portion 5a, and are led out. Since it can discharge | emit via the part 5b, the oversight of a foreign material can be eliminated. Further, when discharging, the operator can confirm whether or not impurities are mixed in the fluid discharged from the discharge port 9a, and it is easy to determine the range of the pipeline in which the impurities are mixed. It has become.

  11 will be described. In each branch pipe device 3 in the pipe region G of the pipe structure 2c, all the branch paths 5 are open, and the fire hydrant 9 in the branch pipe device 3e is further provided. Only the outlet 9a is opened by the operation valve 9b.

  As a result, the outlet 9a from which the fluid is discharged in the pipe region G of the pipe structure 2c is in an open state only in the branch pipe device 3e, so that the fluid pressure in the pipe region G is significantly reduced. In addition, it is possible to efficiently send the contaminants to the branch pipe device 3e without stagnation, and to collect and discharge the contaminants to the sedimentation portion 5a of the branch pipe device 3e. In this way, the discharge port 9a other than the branch pipe device 3e is closed and the contaminants are collected in the sedimentation portion 5a of the branch pipe device 3e to be discharged, thereby eliminating the contaminants.

  As described above, the branch pipe device 3 of the present invention is connected to the fluid pipe 1, and the pipe body 7 in which the fluid path 4 communicating with the fluid pipe 1 and the branch path 5 communicating with the fluid path 4 are formed. And a valve body 6 that is disposed in the pipe body 7 and switches the fluid path 4 and the branch path 5 between opening and closing, and the branch path 5 is located below the fluid path 4. A settling portion 5a for precipitating contaminants in the fluid flowing through the fluid passage 4 and the sediments that have precipitated in the settling portion 5a together with the fluid flowing through the branch passage 5 are led out of the branch passage 5 The lead-out portion 5b is made possible. As a result, the contaminants in the fluid flowing through the fluid passage 4 can be precipitated by the weight in the sedimentation portion 5a formed in the branch passage 5, so that the contaminants can be removed from the fluid and purified without using a special device. In addition, by using the momentum of the fluid flowing through the branch path 5, the settled impurities can be discharged to the outside through the outlet portion 5b without staying.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, the direction of the fluid flowing through the pipeline structure is not limited to the above-described embodiment, and may be appropriately switched between upstream and downstream. Further, what is connected to the branch pipe is not limited to the fire hydrant, and for example, a drain or the like may be used.

  Further, the plug member of the present invention is the operation valve 9b in the above embodiment, but the plug member may use a cap, a lever or the like, and can operate the open / closed state of the end opening of the lead-out part. That's fine.

DESCRIPTION OF SYMBOLS 1 Fluid pipe 2, Pipe structure 2a, b, c Pipe structure 3 Branch pipe apparatus 3a, b, c, d Branch pipe apparatus 4, 4a, 4b Fluid path 5 Branch path 5a Settling part 5b Lead-out part 5c End opening 6 Valve body 7 Pipe body 9 Fire hydrant (plug member)
11 communication points

Claims (4)

A fluid pipe connected to the fluid pipe and having a fluid path communicating with the fluid pipe and a branch path communicating with the fluid path formed therein; and switching between opening and closing of the fluid path and the branch path disposed in the pipe body A branch pipe device comprising:
The branch path is provided below the fluid path, and precipitates for depositing impurities in the fluid flowing through the fluid path, and communicates with the settling section, together with the fluid flowing through the branch path, to the settling section. A deriving part that allows debris that has settled out to be derived out of the branch path;
The valve body is a substantially spherical valve body having communication holes that can communicate in three directions with the upstream side, the downstream side, and the settling part of the fluid path in a fully opened state, and the fluid path and the settling part communicate with each other. It is arranged to be able to rotate at the communication point that
By rotating the valve body , the downstream side of the fluid path is closed by closing one of the upstream side, the downstream side, and the settling portion , and the upstream side or the downstream side. Alternatively, the branch pipe device is switched to open and close to a state in which one of the upstream side and the settling portion communicate with each other.   The branch pipe device according to claim 1, wherein a plug member capable of leading or closing fluid from the end opening is provided at an end opening of the lead-out portion. A pipe line structure including a plurality of branch pipe devices according to claim 1 or 2,
The plurality of branch pipe devices are configured so that the fluid paths are connected to each other via a fluid pipe.   The pipe structure according to claim 3, wherein a bypass pipe is provided in the plurality of branch pipe devices so as to communicate the branch paths with each other.

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