JP2010110705A - Joint pipe and cleaning method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint pipe and a cleaning method for reducing variation of disposing positions of a cleaning member and performing efficient cleaning. <P>SOLUTION: The joint pipe 10 has a cylindrical part 12 with a flow path 14 formed therein, one end of the cylindrical part 12 being provided with a connection part 16. An opening/closing valve 20 is disposed to be adjacent to a step 22 in the cylindrical part 12. A tank 70 is connected to the connection part 16. A circular opening 16B for liquid flow is formed on the cylindrical part 12 side of the connection part 16, and an opening 16D with a diameter larger than the opening 16B is formed via a tapered part 16C continued to the opening 16B. A sponge member 30 is locked to the opening 16D in a compressed state. This configuration prevents dropping of the sponge member 30 and reduces the variation of setting positions of the sponge member 30. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a joint pipe and a cleaning method provided with a cylindrical part having one end connected to a pipe and a connection part having a tank connected to the other end of the cylindrical part.

  2. Description of the Related Art Conventionally, a liquid feeding device is known in which one end of a joint pipe is connected to a tank, the other end of the joint pipe is connected to a pipe, and liquid in the tank is sent from the pipe to the server through the joint pipe.

  In this liquid feeding device, a structure that reduces the number of cleaning steps by disposing a valve body on the joint pipe instead of a ball that prevents backflow of the tank and also serving as backflow prevention means for the cleaning sponge that cleans through the pipe is disclosed. (See Patent Document 1).

  Moreover, the structure which provided the level | step difference to the inner peripheral part of the joint is disclosed (refer patent documents 2 and 3).

Furthermore, the method of cleaning piping with the pig (cleaning tool) is disclosed (refer patent document 4).
JP 2008-142600 A JP 2006-200587 A JP 2006-200588 A JP 2005-30553 A

  However, in the configuration described in Patent Document 1, when the sponge is set in the connection portion, the position of the sponge varies and the workability is poor.

  In the configurations described in Patent Documents 2 and 3, a step is provided on the inner peripheral portion of the joint, but the method of attaching the cleaning member is not considered and there is room for improvement.

  In the configuration described in Patent Document 4, it is not considered that when the pipe is cleaned by the pig (cleaning tool), the cleaning tool moves until the cleaning liquid passes by allowing the cleaning tool to remain until the pipe is connected. Inferior workability during pipe cleaning.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a joint pipe and a cleaning method that can reduce the variation in the position where the cleaning member is disposed and can be cleaned efficiently.

  In order to solve the above-described problem, a joint pipe according to the invention described in claim 1 is provided with a cylindrical part having one end connected to the pipe and having a flow path formed at the other end of the cylindrical part. A connecting portion connected to the cylindrical portion, and an on-off valve provided between the connecting portion and the cylindrical portion for opening and closing the flow path, and the connecting portion is disposed on the opposite side of the cylindrical portion and is washed. A locking portion to which a member is locked, a narrow hole portion that is connected to the locking portion and is provided between the locking portion and the on-off valve, and has an inner diameter smaller than the inner diameter of the locking portion; It is comprised including.

  In the first aspect of the present invention, the pipe is connected to one end of the cylindrical portion, and the tank is connected to the connecting portion provided at the other end of the cylindrical portion. In addition, an on-off valve is provided between the cylindrical portion and the connection portion, and the flow path is opened by opening the on-off valve, and liquid is introduced from the connection portion into the cylindrical portion. The connecting portion has a locking portion disposed on the side opposite to the cylindrical portion, and the cleaning member is locked to the locking portion. The connecting portion is provided with a narrow hole portion having an inner diameter smaller than the inner diameter of the locking portion between the locking portion and the on-off valve, and is engaged with the locking portion by the pressure of the cleaning liquid introduced from the connecting portion. The stopped cleaning member starts moving, and the cleaning member is sent to the narrow hole part together with the cleaning liquid. Further, the cleaning member is sent to the pipe through the joint pipe together with the cleaning liquid, and the inside of the pipe is cleaned. By locking the cleaning member to the locking portion, it is possible to reduce the variation in the position where the cleaning member is arranged, prevent or suppress the cleaning member from dropping from the connecting portion, and efficiently clean piping and the like. Can do.

  According to a second aspect of the present invention, in the joint pipe according to the first aspect, the on-off valve includes a valve body that closes the flow path, and an end of the valve body that is introduced by introducing liquid from the connection portion. And a support member that is supported so as to be rotatable only toward the cylindrical portion.

  In the invention according to claim 2, the on-off valve includes a valve body that closes the flow path, and a support member that supports the end portion of the valve body so as to be rotatable only toward the cylindrical portion, By introducing the cleaning liquid from the valve body, the valve body is rotated to open the flow path. Accordingly, the cleaning member can be sent together with the cleaning liquid through the on-off valve to the cylindrical portion.

  A cleaning method according to a third aspect of the present invention is a method for cleaning a pipe provided with the joint pipe according to the first or second aspect, wherein a pipe is connected to the cylindrical portion, and the locking portion The cleaning member is disposed while being compressed in the radial direction, the connection portion is connected to a cleaning container filled with a cleaning liquid, and the cleaning liquid is introduced from the cleaning container into the connection section, whereby the on-off valve is controlled by the pressure of the cleaning liquid. The cleaning member is introduced into the cylindrical portion together with the cleaning liquid, and is sent from the cylindrical portion into the pipe.

  In invention of Claim 3, piping is connected to a cylindrical part and it arrange | positions, compressing a cleaning member to a latching | locking part to radial direction. Then, the connecting part is connected to the cleaning container filled with the cleaning liquid, and the cleaning liquid is introduced from the cleaning container into the connecting part, thereby opening the on-off valve by the pressure of the cleaning liquid and introducing the cleaning member together with the cleaning liquid into the cylindrical part. . Then, the cleaning member is sent together with the cleaning liquid from the cylindrical portion into the pipe to clean the inside of the pipe. In this cleaning method, the cleaning member is locked to the locking portion while being compressed in the radial direction, thereby reducing variation in the position where the cleaning member is disposed and preventing or suppressing the cleaning member from dropping from the connecting portion. It is possible to clean the piping and the like efficiently.

  According to the present invention, it is possible to reduce the variation in the position where the cleaning member is arranged, and to clean the piping and the like efficiently.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a cross-sectional view showing a joint pipe 10 according to an embodiment of the present invention. The joint pipe 10 includes a cylindrical portion 12. A flow path 14 through which a liquid (for example, beer) can pass is formed on the inner peripheral side of the cylindrical portion 12. The inner circumferential side of the cylindrical portion 12 has a large diameter portion 12A on the upstream side in the liquid introduction direction (lower side in FIG. 1), and the diameter gradually increases from the large diameter portion 12A toward the downstream side in the liquid introduction direction. The taper part 12B which shrinks | reduces, and the small diameter part 12C which continues in a liquid introduction direction downstream from the taper part 12B. That is, the flow path 14 is comprised by the large diameter part 12A, the taper part 12B, and the small diameter part 12C.

  As shown in FIG. 3, a pipe (not shown) such as a hose is connected to one end of the cylindrical portion 12 on the downstream side in the liquid introduction direction (upper side in FIG. 3) via a joint 18. . The downstream end of the pipe is connected to a server (not shown) for supplying beer, for example. Further, a cylindrical connecting portion 16 is provided at the other end of the cylindrical portion 12 which is the upstream side in the liquid introduction direction (the lower side in FIG. 3), and this connecting portion 16 is used as a cleaning container. It is connected to the tank 70.

  As shown in FIG. 1, the inner peripheral portion on the other end side (upstream side in the liquid introduction direction) of the cylindrical portion 12 has a larger diameter than the large diameter portion 12A, and a screw portion 12D is formed on the inner peripheral portion. Has been. Moreover, the outer peripheral part on the opposite side to the cleaning tank 70 of the connection part 16 has a large diameter, and a screw part 16A to be screwed with the screw part 12D is formed on the outer peripheral part. The connecting portion 16 is attached to the cylindrical portion 12 by screwing the screw portion 16 </ b> A of the connecting portion 16 into the screw portion 12 </ b> D of the cylindrical portion 12.

  As shown in FIG. 2, a circular opening 16 </ b> B through which a liquid flows is formed on the cylindrical portion 12 side of the core portion of the connection portion 16. On the side of the cleaning tank 70 (see FIG. 3) of the core portion of the connecting portion 16, a tapered portion 16C that is continuous with the opening portion 16B and has an increased inner diameter is formed, and on the cleaning tank 70 side of the tapered portion 16C, An opening 16D having a diameter larger than that of the opening 16B is formed continuously with the lower portion of the tapered portion 16C. As shown in FIGS. 2 and 3, a substantially U-shaped opening 36 is formed at a position opposite to the wall surface of the opening 16D. The inner diameter of the opening 16D is set to 7.6 mm, and the inner diameter of the opening 16B is set to 5 mm. The angle of the tapered portion 16C with respect to the opening portion 16B is set to 45 °.

  The opening 16D is formed in such a size that a substantially cylindrical sponge member 30 (see FIG. 4) as a cleaning member for cleaning the inside of a pipe (not shown) can be set. The outer diameter of the sponge member 30 (see FIG. 4) is set to, for example, 7.8 mm to 8.5 mm. For example, foaming polyurethane is used as the sponge member 30. The opening 16D is a locking portion that can lock the sponge member 30, and is configured to fit into the opening 16D in a state where the sponge member 30 is compressed in the radial direction. At that time, the inner diameter of the opening portion 16 </ b> D is set to such a diameter that the sponge member 30 does not fall into the cleaning tank 70. Further, the opening 16B is a pinching portion having an inner diameter smaller than the outer diameter of the sponge member 30.

  The inner diameter of the opening 16B is smaller than the inner diameter of the large-diameter portion 12A of the cylindrical portion 12, and a step portion 22 is formed at the end of the connection portion 16 opposite to the cleaning tank 70. An opening / closing valve 20 that can open and close the flow path 14 is disposed adjacent to the step portion 22 between the connection portion 16 and the cylindrical portion 12. The mounting structure of the on-off valve 20 will be described later.

  As shown in FIG. 1, the on-off valve 20 includes a circular rubber plate 24, and a circular shape leaving a support portion 25 that is a part of a circle on the inner diameter side of the circumferential portion 24 </ b> A of the rubber plate 24. A slit S1 cut into two is formed, and a circular portion inside the slit S1 is a valve body 26. Concave portions 27 are formed on both sides of the rubber plate 24 around the support portion 25 and the support portion 25, and the thickness of the support portion 25 and the periphery of the support portion 25 is the thickness of the rubber plate 24 of other portions. Thinner than that. A corner portion 27A in the recess 27 is cut out in an R shape. A circular opening 26 </ b> B is formed at the center of the rubber plate 24 constituting the valve body 26.

  As shown in FIG. 1, a rigidity auxiliary member 28 including support portions 28 </ b> A and 28 </ b> B supported on the upper surface and the lower surface of the rubber plate 24 is fitted in the opening 26 </ b> B of the rubber plate 24. The rigidity auxiliary member 28 is for preventing the backflow of liquid, and is formed of a material (for example, resin) harder than the rubber material of the rubber plate 24 so that the circular portion of the valve body 26 is not deformed. The stiffness assisting member 28 is for preventing the backflow of the liquid, and a conical projecting portion 28 </ b> C projecting toward the cylindrical portion 12 is formed at the center.

  At this time, the outer diameter of the stiffness assisting member 28 is set in the range of 40% to 80% of the inner diameter of the large diameter portion 12A of the cylindrical portion 12, and more preferably in the range of 40% to 65%. By setting the outer diameter of the rigid auxiliary member 28 within a range of 40% to 80% of the inner diameter of the large-diameter portion 12A of the cylindrical portion 12, the valve body 26 can be easily rotated to the cylindrical portion 12 side. When the body 26 is opened, the projecting portion 28 </ b> C stably contacts the inside of the tubular portion 12. Moreover, the outer diameter of the valve body 26 is set to 9.4 mm.

  Between the cylindrical portion 12 and the connecting portion 16, the stepped portion 22, the end surface 17 of the large-diameter portion 12 </ b> A, and the inner peripheral portion of the cylindrical portion 12 adjacent thereto are disposed downstream of the stepped portion 22 in the liquid introduction direction. A configured groove is formed, and a circumferential portion 24A of the rubber plate 24 is sandwiched between the grooves. Then, by adjusting the tightening amount of the threaded portion 16A of the connecting portion 16 to the threaded portion 12D of the tubular portion 12, the circumferential portion 24A of the rubber plate 24 is connected to the stepped portion 22 of the connecting portion 16 and the tubular portion 12. It is fixed between the end face 17.

  In the normal state, the opening / closing valve 20 has the valve body 26 and the circumferential portion 24A of the rubber plate 24 on the same plane by the support portion 25, and the valve body 26 comes into contact with the step portion 22 to close the flow path 14. ing. On the other hand, as shown in FIG. 6, when the liquid is introduced, the rubber support portion 25 extends and the valve body 26 rotates to the downstream side in the liquid introduction direction, so that the flow path 14 is opened. ing. At that time, when the thickness of the support portion 25 and the concave portion 27 around the support portion 25 is thinner than the thickness of the rubber plate 24, the support portion 25 is easily stretched and liquid is introduced at a low fluid pressure. However, the valve body 26 is easy to rotate. Further, by providing the rigidity auxiliary member 28 at the center of the valve body 26, the valve body 26 is stably held at the position where the flow path 14 is closed, and the valve body 26 is moved toward the cylindrical portion 12 by introducing liquid. It can be smoothly rotated. Thereby, the back flow of the liquid can be suppressed.

  In addition, as a material which comprises the rubber plate 24 as the on-off valve 20, SBR, NBR, EPDM, silicone rubber, fluororubber, IIR (butyl rubber), natural rubber, etc. are used, for example. The material of the stiffness assisting member 28 is desirably a material harder than the rubber plate 24 in order to prevent deformation of the circular portion of the rubber plate 24. For example, PBT (polybutylene terephthalate), polypropylene, polyacetal, or the like is used. Yes.

  As shown in FIG. 1, the joint 18 includes a cap nut 42 at one end of a substantially L-shaped tubular joint body 40. The screw portion 42A of the cap nut 42 is screwed into a screw portion 12E formed at the other end of the cylindrical portion 12. An annular locking member 44 is disposed on the inner wall of the cap nut 42, and the protrusion 40 </ b> A of the joint body 40 is locked to the locking member 44. An annular seal member 46 is disposed between the longitudinal end face of the protrusion 40A of the joint body 40 and the longitudinal end face of the tubular portion 12, and the cap nut 42 and the joint body 40 are sealed. Has been.

  Next, an operation of the joint pipe 10 according to the present invention, which is a method for cleaning a pipe, will be described.

  A connecting portion 16 provided at one end of the tubular portion 12 is connected to the joint pipe 10 to a beer barrel (not shown). A pipe is connected to the downstream side of the joint pipe 10, and a server is connected to the downstream side of the pipe. When cleaning the piping and the server on the downstream side of the joint pipe 10, as shown in FIG. 4, the beer barrel (not shown) of the connection portion 16 is removed and the opening portion 16 </ b> D (locking portion) of the connection portion 16 is removed. A substantially cylindrical sponge member 30 is set on the surface. At this time, as shown in FIG. 5, since the opening 16D (locking portion) is smaller than the outer diameter of the sponge member 30, the sponge member 30 is fitted into the opening 16D while being compressed in the radial direction. Thereby, the sponge member 30 can be prevented from falling from the opening 16D. In this state, a cleaning tank 70 filled with a cleaning liquid (for example, water) is attached to the connecting portion 16.

  Then, as shown in FIG. 4, by introducing a predetermined gas (for example, carbon dioxide gas) and introducing the cleaning liquid from the cleaning tank 70 to the connecting portion 16 by gas pressure, the valve body 26 of the on-off valve 20 is downstream in the introduction direction. The flow path 14 is opened by rotating to the side, and the cleaning liquid is introduced into the flow path 14 of the joint pipe 10 from the connection portion 16. The sponge member 30 locked to the opening 16D starts to move by the pressure of the cleaning liquid introduced from the connection portion 16, and the sponge member 30 is sent to the opening 16B together with the cleaning liquid. At that time, the opening portion 16B is a pinching portion having an inner diameter smaller than the outer diameter of the sponge member 30, and the sponge member 30 is sent to the opening portion 16B in a compressed state. Washing can be performed reliably. Further, since the sponge member 30 is locked to the opening 16D in a compressed state, variations in the setting position of the sponge member 30 can be suppressed.

  Furthermore, as shown in FIG. 6, the sponge member 30 passes through the on-off valve 20 together with the cleaning liquid by opening the valve body 26 and moves in the flow path 14. At this time, since the support portion 25 of the valve body 26 and the surrounding thickness are thinner than the thickness of the rubber plate 24, the support portion 25 is easily extended, and the valve body 26 is easily rotated downstream in the introduction direction.

  Further, a rigid auxiliary member 28 is fitted in the opening 26B of the valve body 26, and when the valve body 26 is opened, the conical protrusion 28C stably contacts the inner wall of the cylindrical portion 12 within a relatively wide range. . For this reason, the open state of the valve body 26 is stabilized in the liquid, and the sponge member 30 easily passes between the valve body 26 and the cylindrical portion 12. Thereby, it is possible to prevent or suppress the sponge member 30 from being caught near the valve body 26.

  The sponge member 30 that has passed through the valve body 26 moves in the flow path 14 of the cylindrical portion 12 together with the cleaning liquid. At this time, by setting the inner diameter of the small diameter portion 12C of the cylindrical portion 12 to be smaller than the outer diameter of the sponge member 30, the sponge member 30 can be compressed and moved while being in contact with the inner wall of the small diameter portion 12C. As a result, the inside of the small diameter portion 12C can be more reliably cleaned. Further, the sponge member 30 is sent from the joint pipe 10 through the joint 18 along the introduction direction of the cleaning liquid to the pipe and a server (not shown) on the downstream side of the pipe, and the pipe and the server are washed.

  In such a joint pipe 10, after removing the beer barrel (not shown) connected to the connection portion 16, in order to attach the cleaning tank 70 with the sponge member 30 fitted in the opening portion 16 </ b> D of the connection portion 16, The fall of the sponge member 30 into the cleaning tank 70 can be prevented or suppressed. Further, the sponge member 30 is unlikely to vary in the position where the sponge member 30 is set to the connection portion 16. Accordingly, the joint pipe 10, the pipe, and the server (not shown) can be efficiently cleaned with a small number of processes.

  When the liquid is not introduced into the joint pipe 10 (when the pressure is not applied in the direction in which the sponge member 30 is passed), the valve body 26 is closed by the contact of the valve body 26 with the stepped portion 22, and the valve body 26 is closed. Can be prevented from leaking in the opposite direction (on the side of the connecting portion 16).

  On the other hand, FIG.7 and FIG.8 shows the coupling pipe 100 which concerns on a comparative example. In addition, the same code | symbol is attached | subjected to the member same as the joint pipe which concerns on one Embodiment, and the overlapping description is abbreviate | omitted.

  As shown in FIGS. 7 and 8, the joint pipe 100 includes a connection portion 102, and a circular straight opening 102 </ b> A through which a liquid flows is formed in the core portion of the connection portion 102. A substantially U-shaped opening 104 is formed at a position opposite to the wall surface of the opening 102A. The inner diameter of the opening 102A is set to 8 mm, which is about the same as the outer diameter of the sponge member or larger than the outer diameter of the sponge member.

  The on-off valve 120 provided in the joint pipe 100 is fitted with a rigidity auxiliary member 122 having support portions 122A and 122B supported on the upper and lower surfaces of the rubber plate 24 in a circular opening 26B of the rubber plate 24. It is. The rigidity auxiliary member 122 is formed in a substantially flat plate shape, and no protruding portion is provided on the cylindrical portion 12 side.

  In such a joint pipe 100, the connecting portion 102 is provided with a straight opening 102A, and it is difficult to lock the sponge member in the opening 102A, and the sponge member easily falls from the opening 102A. In addition, variation is likely to occur in the position where the sponge member is set in the opening 102A. On the other hand, in this embodiment, since the cleaning tank 70 is attached in a state where the sponge member 30 is fitted in the opening 16D of the connection portion 16, the fall of the sponge member 30 onto the cleaning tank 70 is prevented or suppressed. Can do.

  Note that the shapes and dimensions of the openings 16B and 16D of the connection portion 16 are not limited to the above-described embodiment, and other configurations may be used as long as the shapes and dimensions can lock the cleaning member in the openings 16D.

It is sectional drawing which shows the joint pipe which concerns on one Embodiment of this invention. FIG. 2 is a half-cut sectional view showing a connecting portion provided in the joint pipe shown in FIG. 1. It is the side view and perspective view which show the connection part provided in the joint pipe shown in FIG. It is sectional drawing which shows the state which set the sponge member to the connection part of the coupling pipe shown in FIG. 1, and connected the washing tank. It is the half-cut sectional view and top view which show the state which set the sponge member to the connection part of the joint pipe shown in FIG. In the joint pipe shown in FIG. 1, it is sectional drawing which shows the process in which a sponge member moves the inside of the cylindrical part of a joint pipe. It is sectional drawing which shows the joint pipe of a comparative example. It is a half cut sectional view which shows the connection part used for the joint pipe of a comparative example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Joint pipe 12 Cylindrical part 14 Flow path 16 Connection part 16B Opening part 16C Taper part 16D Opening part 20 On-off valve 25 Support part (support member)
26 Valve body 30 Sponge member 70 Cleaning tank (cleaning container)

Claims (3)

A cylindrical portion having one end connected to the pipe and a flow path formed;
A connecting portion provided at the other end of the cylindrical portion and connected to the tank;
An open / close valve provided between the connecting portion and the tubular portion and opening and closing the flow path;
The connecting portion is disposed on the opposite side of the cylindrical portion and is engaged with the locking portion, and is connected to the locking portion and is provided between the locking portion and the on-off valve. And a narrow tube formed smaller than the inner diameter of the locking portion.   The on-off valve includes: a valve body that closes the flow path; and a support member that supports the end of the valve body so as to be rotatable only toward the cylindrical portion by introducing liquid from the connection portion. Item 2. The joint pipe according to Item 1. A method for cleaning a pipe comprising the joint pipe according to claim 1 or 2,
Connecting a pipe to the tubular part,
Place the cleaning member in the locking portion while compressing in the radial direction,
Connect the connecting part to a cleaning container filled with a cleaning liquid,
By introducing the cleaning liquid from the cleaning container into the connection part, the on-off valve is opened by the pressure of the cleaning liquid, the cleaning member is introduced into the cylindrical part together with the cleaning liquid, and is sent from the cylindrical part into the pipe. How to clean piping.

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