JP2017036804A - Air piping system and construction method of air piping system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air piping system capable of easily mounting an air takeout port of a simple structure without using a dedicated component.SOLUTION: An air piping system includes a master pipeline extended in a horizontal direction to supply compressed air, and an air takeout port for taking out the compressed air from the master pipeline. The air takeout port is disposed on an intermediate route of the master pipeline, and includes a route branch portion for branching the route upward from the horizontal direction, and an inverted U-shaped pipeline connected to the route branch portion at one end. The inverted U-shaped pipeline is formed by bending one air piping, and the route branch portion connects the inverted U-shaped pipeline by a fitting structure.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an air piping system and a construction method for the air piping system, and more particularly to an air piping system having an air outlet and a construction method for forming an air outlet in the air piping system.

  In various factories such as automobile factories, food factories, and semiconductor factories, compressed air compressed by a compressor is incorporated with air tools such as an air gun at the work site and an air drive source such as an air cylinder via a pipe. Supplied to the air device. Such a supply path of compressed air is referred to as an air piping system, and piping forming the air piping system is generally referred to as air piping. Air piping is mainly classified into iron steel pipes, resin resin pipes, multilayer pipes in which a resin layer and a metal layer are stacked (see Non-Patent Document 1), and the like.

  The compressed air supply path of the air piping system includes a pipe and a joint that connects the pipes in addition to the air pipe. In the air piping system, the installation route is designed in consideration of the size of the factory to which it is applied and other equipment, and the air piping is formed in a desired length and shape, and piping is performed by a joint so as to form the desired route. And pipes are laid. Moreover, in order to supply compressed air to an air tool or an air apparatus, the air piping system laid in the factory has an air outlet for taking out compressed air in the middle of the path.

  By the way, the compressed air flowing through the route of the air piping system contains moisture generated by condensation, etc., and if this flows into the air tool or air device together with the compressed air, the air tool or air device may break down or the air There was a problem peculiar to the air piping system, such as adversely affecting the work on which the tool was applied. Accordingly, the air outlet is devised in various ways so that moisture in the air pipe does not flow out to the air tool.

  In order to prevent moisture from flowing out, for example, in a conventional air piping system using steel pipes, a route is branched so that it rises upward from the main piping route extending in the horizontal direction of the piping system, and a route is formed so that it falls downward again. There is an air piping system provided with an air outlet (see FIG. 8) using the inverted U-shaped piping path. By branching the path so as to rise upward at this air outlet, only the air can be taken out without causing moisture accumulated on the bottom side of the main pipeline extending in the horizontal direction to flow out to the air outlet.

  In addition, for example, in the air piping system using a multilayer pipe described in Non-Patent Document 1, air extraction cheese with a special structure is used as an air outlet (see FIG. 9). This air extraction cheese is provided in the middle of the main pipe line extending in the horizontal direction, forms a main flow path that communicates the primary side and the secondary side in the horizontal direction, and further flows in the middle of the main flow path. A branch flow path for branching the path and distributing compressed air is formed.

  In this air extraction cheese, a branch pipe extending from the branch side to the middle of the main flow path is provided as a branch flow path. As a result, even if the branch pipe is attached to the air pipe with the branch side down, the branch pipe rises in the main flow path beyond the bottom of the main flow path. Only the air can be taken out without causing the water accumulated at the bottom to flow out to the air outlet.

Catalog “Light Air (registered trademark)”, Tabuchi Co., Ltd., issued in October 2014

  However, in the conventional air piping system using steel pipes, as shown in FIG. 8, a T-shaped joint and an L-shaped joint are used for manufacturing the path branching portion and the inverted U-shaped piping path. A female thread is cut at the connection port of these joints, and a male thread is cut at the end of the pipe to be connected, and the pipes are joined by a screwed structure. In this connection, an air leak is prevented by winding a sealing tape for sealing around the male thread of the pipe and screwing the pipe to an appropriate part in the joint.

  Therefore, for the construction of the air outlet, the pipe is threaded. Piping threading requires large equipment or craftsmanship, which makes construction difficult. In addition, in the coupling by the screwed structure, the screwing amount to which the pipe is screwed into the joint and the angle at which the pipe is screwed into the joint must be determined at the same time.

  If the pipe is screwed in too much and then screwed back, the sealing tape loses the sealing effect. Therefore, in this case, it is necessary to replace the seal tape, and it is necessary to remove the pipe from the joint and perform the screwing operation again. As described above, the connection by the screw-in structure is complicated.

  Furthermore, when supplying air to the air device from the air outlet, the lower end of the inverted U-shaped pipe line is connected to the air supply port of the air device, so the position is fixed from the branch path part. It was necessary to manufacture an inverted U-shaped pipeline with an accurate size and angle up to the air supply port of the air device, and to accurately lead the end of the inverted U-shaped pipeline to the air supply port. However, manufacturing such an inverted U-shaped pipe line with a screwed structure has been a very difficult task.

  Therefore, in the conventional air piping system using steel pipes, the construction of the reverse U-shaped piping path, the positioning of connecting the reverse U-shaped piping path to the path branching part, and the angle determination are the work-around. It was.

  In addition, the piping system using multi-layered pipes can easily form an air outlet using air extraction cheese, but the air extraction cheese, which is a dedicated product for the air outlet, has a complicated structure and is expensive. It was. Furthermore, since the cheese for air extraction is provided with a branch pipe protruding in the path in the joint, the diameter of the branch pipe becomes smaller than the diameter of the pipe, and air with a desired flow rate may not be extracted. Further, when the amount of water is large enough to reach the opening of the branch pipe that protrudes beyond the bottom of the main channel, the moisture may flow out to the branch channel.

  The present invention has been made to solve these problems, and it is an object of the present invention to provide or construct an air piping system that has an air outlet with a simple structure and that is easy to construct without using a dedicated product. And

  One air piping system according to the present invention includes a main pipe line that extends in the horizontal direction and supplies compressed air, and an air outlet that takes out the compressed air from the main pipe line. The air outlet is provided in a middle path of the main pipe line, and includes a path branch part that branches the path upward from the horizontal direction, and an inverted U-shaped pipe line having one end connected to the path branch part. . The reverse U-shaped pipe line is formed in a U shape by bending a single air pipe, and the path branching portion is connected to the reverse U-shaped pipe line by a fitting structure. It is characterized by.

  According to this air piping system, since the reverse U-shaped pipe line is connected to the path branching portion by a fitting structure, the reverse U-shaped pipe line serving as the air outlet can be easily connected to the main pipe line. As a result, compared to the conventional screw-in structure used for connecting steel pipes, pipe threading is unnecessary, and it is easy to adjust the mounting angle of the reverse U-shaped pipe line, which is a complicated reverse U-shaped pipe. The work of installing the road becomes very easy.

  In addition, according to this air piping system, since the reverse U-shaped pipe line is formed by bending one air pipe, it is easy to manufacture the reverse U-shaped pipe line, and the reverse U-shaped pipe in the conventional steel pipe Compared to the production with the screwed structure of the road, threading of the pipe is not required, and the direction of each pipe part of the reverse U-shaped pipe line is easy to make, making the complicated reverse U-shaped pipe line very easy to manufacture. become.

  Furthermore, according to this air piping system, since the reverse U-shaped pipe line is manufactured from a single air pipe by bending, the path changing portion of the reverse U-shaped pipe path is an elbow (L-shaped joint). Compared to the conventional inverted U-shaped pipe line of a steel pipe, it is not necessary to use a joint, and the pressure loss and the risk of air leakage are reduced.

  The one air pipe of the one pipe system is preferably a multilayer pipe including a resin layer and a metal layer. According to this pipe, a resin pipe with only a resin layer cannot maintain its desired shape with a low rigidity, or it cannot be fixed with a desired shape due to repulsion if its elasticity is too high. On the other hand, in the case of a multilayer pipe including a metal layer, the pipe can be fixed in a desired shape by plastic deformation of the metal layer, and the resin layer reinforces the strength of the pipe. Thereby, the reverse U-shaped piping path of a desired shape can be manufactured easily.

  The multilayer pipe of the one piping system is preferably a three-layer pipe including a resin layer, a metal layer, and a resin layer from the inside. According to this piping, the metal layer is fixed in a desired shape by plastic deformation, and the inner and outer resin layers reinforce the strength of the piping. Furthermore, since the inner layer is a resin layer, corrosion caused by moisture contained in the air of the air piping system can be prevented.

  Another piping system according to the present invention includes a main piping path that extends in the first horizontal direction and supplies compressed air, and an air outlet that extracts compressed air from the main piping path. The air outlet is provided in a midway route of the main pipeline, and a route branching portion that branches upward from the first horizontal direction, and is connected to the route branching portion and extends upward to route the route in the vertical direction. A first vertical piping section to be formed; a first path changing section that changes a path from a terminal end of the first vertical piping section to a second horizontal direction that intersects a first horizontal direction; and the first A horizontal pipe part extending in the second horizontal direction from the path changing part and forming a path in the second horizontal direction; a second path changing part changing the path downward from the end of the horizontal pipe part; A second vertical piping section extending downward from the second path changing section and forming a path in the vertical direction. The path branching portion is connected to the first vertical piping portion by a fitting structure.

  According to this air piping system, the inverted U-shaped piping formed from the first vertical piping section, the first path changing section, the horizontal piping section, the second path changing section, and the second vertical piping section is provided. The main pipe line is connected to the route branching portion by a fitting structure. Since the fitting structure is easy to connect, pipe threading is not required and the mounting angle of the reverse U-shaped pipe line is less than that of a conventional screw-type pipe threaded structure that is required for steel pipes. Adjustment becomes easy and the work of attaching the complicated inverted U-shaped pipe line becomes very easy.

  The first path changing unit of the other air piping system may be connected to the first vertical piping unit and the horizontal piping unit by a fitting structure. This air piping system eliminates the need for pipe threading compared to the connection of an air outlet with a screw-in structure that is required for conventional steel pipes, and in the connection of the piping part of an inverted U-shaped pipe line. The angle can be easily adjusted, and the complicated inverted U-shaped pipe line can be easily manufactured.

  In addition, since the pipe and the pipe are connected by the fitting structure, the length of the first vertical pipe and the horizontal pipe is not limited for thread cutting, and the air pipe system can be used without cutting out the dedicated pipe. It is possible to use a surplus pipe of the pipe forming the part.

  That is, in the conventional inverted U-shaped pipe line of a steel pipe, a large apparatus is required for threading the steel pipe, and a first vertical pipe part and a horizontal pipe part having a certain length are necessary to adapt to the large apparatus. It was. However, in this air piping system, the pipes of the inverted U-shaped pipelines are connected to each other with a fitting structure, so that there is no need for threading, and excess piping can be used for the production of the air outlet. Air piping system can be manufactured efficiently.

  In the other air piping system, it may be connected to the horizontal piping portion and the second vertical piping portion by a fitting structure. This air piping system eliminates the need for pipe threading compared to the connection of an air outlet with a screw-in structure that is required for conventional steel pipes, and in the connection of the piping part of an inverted U-shaped pipe line. The angle can be easily adjusted, and the complicated inverted U-shaped pipe line can be easily manufactured.

  In addition, since the pipes and pipes are connected by the fitting structure, the length of the horizontal pipe part and the second vertical pipe part are eliminated due to the threading process, and the air pipe system can be used without cutting out dedicated pipes. It is possible to use a surplus pipe of the pipe forming the part.

  That is, in the conventional inverted U-shaped pipe line of a steel pipe, a large apparatus is required for threading the steel pipe, and a horizontal pipe part and a second vertical pipe part of a certain length are necessary to adapt to the large apparatus. It was. However, in this air piping system, the pipes of the inverted U-shaped pipelines are connected to each other with a fitting structure, so that there is no need for threading, and excess piping can be used to manufacture the air outlet, without wasting the piping. Air piping system can be manufactured efficiently.

  At least one of the first and second path changing portions of the other piping system may be formed by bending the piping. Thereby, since a joint can be reduced, construction of an air outlet becomes easy and the risk of air leakage is also reduced.

  In one or another air piping system according to the present invention, an end of the inverted U-shaped pipe line opposite to the path branching part may be connected to an air supply port whose position is fixed. In order to connect the end of the inverted U-shaped pipeline to the fixed air supply port, it is necessary to manufacture and lead an accurate inverted U-shaped pipeline. Although it was extremely difficult to produce an accurate inverted U-shaped pipe line by the conventional screw-in structure, an accurate inverted U-shaped pipe line can be easily manufactured if the connection is made by the fitting structure, and the end portion is air-operated. Can lead accurately to the supply port.

  In the construction method of the air piping system according to the present invention, a route branching portion that branches the route upward is formed in the main piping route that extends in the first horizontal direction and forms the route of the compressed air in order to supply compressed air. A first step, a first vertical pipe section extending upward, and a first path changing section for changing a path from a terminal end of the first vertical pipe section to a second horizontal direction orthogonal to the first horizontal direction A horizontal pipe portion extending in the second horizontal direction from the first route change portion, a second route change portion changing the route downward from an end of the horizontal pipe portion, and the second route change portion from the second route change portion A second step of producing an inverted U-shaped piping path comprising a second vertical piping section extending downward beyond the horizontal position of the main piping path; and a starting end of the first vertical path of the inverted U-shaped piping path. And a third step of connecting to the route branching portion. The first vertical pipe part is connected to the path branch part by a fitting structure.

  In the conventional air piping system using steel pipes, when constructing an air outlet, the second water vertical piping section is connected to the main piping line in order to form an inverted U-shaped piping path and then connect to the main piping line. When extending beyond the position, the reverse U-shaped pipeline cannot be rotated due to the screwed structure, and the connection to the path branching portion is impossible. Further, when the air piping system is laid on a ceiling or the like, it is difficult to manufacture an inverted U-shaped piping path in order with a large number of joints at a high work. However, in this construction method, the reverse U-shaped pipe can be connected to the route branching part of the main pipe line without rotating it after forming the reverse U-shaped pipe line that becomes the air outlet, so the construction of the air outlet is It becomes very simple.

  The first step of the construction method of the air piping system includes a first step of cutting the main pipe line and a first horizontal direction of the path branching portion between the cut main pipe line. And a second step of joining the cut ends of the main pipe line to the respective connection ports of the primary side and the secondary side by a fitting structure. According to the construction method of this air piping system, after constructing the piping system, an air outlet can be additionally created.

  An object of the present invention is to provide an air piping system in which an air outlet having a simple structure can be easily attached without using a dedicated product.

It is a perspective view showing an air piping system concerning a 1st embodiment of the present invention. It is an enlarged view of F2 in FIG. 1, and is a figure which shows the air outlet of the air piping system concerning the 1st Embodiment of this invention. It is a figure which shows the cheese which comprises the path | route branch part of the air extraction opening of FIG. 2, (A) is a side view, (B) is a front view, (C) is front sectional drawing, (D) shows a front exploded view. . It is a figure which shows the elbow which comprises the path | route change part of the air extraction opening of FIG. 2, (A) is a side view, (B) is a front view, (C) is front sectional drawing, (D) shows a front exploded view. . It is a flowchart which shows the construction method of the air outlet of the air piping system concerning the 1st Embodiment of this invention. It is a figure which shows the air outlet of the air piping system concerning the 2nd Embodiment of this invention. It is a flowchart which shows the construction method of the air extraction opening of the air piping system concerning the 2nd Embodiment of this invention. It is a figure which shows the air outlet by the conventional steel pipe. It is an expansion exploded view of F9 in FIG. 2, and is a figure which shows the air extraction opening by the cheese for known air extraction which is an exclusive article.

[First air piping system]

  First, a piping system (hereinafter referred to as “air piping system”) 100 for supplying compressed air according to a first embodiment of the present invention will be described. As shown in FIG. 1, the air piping system 100 includes a plurality of pipes and various joints such as a straight shape, a T shape, and an L shape for connecting the pipes to each other, and is formed in an infinite loop shape. Has been. The piping used for the air piping system 100 is referred to as an air piping 101. The T-shaped joint is referred to as cheese 102, and the L-shaped joint is referred to as elbow 103.

  The air piping system 100 is suspended from the ceiling by a suspension band 104. In addition, the air piping system 100 is generally formed in a loop shape that forms a horizontal plane, but when intersecting with other equipment, it is laid so as to bend the pipe by bending and avoid other equipment. Yes. The air piping system 100 is connected via a valve 105 to a compressor (not shown) that is a supply source of compressed air. Therefore, by opening the valve 105, compressed air is supplied from the compressor to the air piping system.

  The air piping 101 used in the air piping system is configured in a cylindrical shape including three layers of a first resin layer 101a, a metal layer 101b, and a second resin layer 101c from the inside (the air piping 101 in FIG. 5). (See a partially enlarged view). The air pipe 101 can be bent, and the bent state is maintained by the plastic deformation of the metal layer 101b. Furthermore, the air pipe 101 is provided with the first and second resin layers 101a and 101c, so that appropriate rigidity is ensured.

  The air pipe 101 can be bent by a conventionally well-known bending apparatus (not shown). However, the air pipe 101 according to the present embodiment has the resin layers 101a and 101c and the metal layer 101b appropriately selected in thickness, and can be bent manually without using a bending apparatus.

  The air piping system 100 is intended to supply compressed air to an air device equipped with an air tool, such as an air gun, an air drill, an air sander, or an air drive source such as an air cylinder, an air pump. An air gun 106 is illustrated as an air tool. The air gun 106 is connected to the air outlets 120 and 920 in a suspended state via a coil-type air hose 107. However, the air outlet may be connected to a fixed air supply port of the air device.

  Thereby, compressed air is supplied from the compressor to the air gun 106 through the air piping system 100. The air piping system 100 includes a plurality of main piping lines 110 extending linearly in a horizontal direction, and an air outlet 120 (for example, F2 in FIG. 1) or an air outlet 920 (for example, F2) is provided in a part of each main piping path 110. F9) of FIG. 1 is formed.

  The air outlet 920 includes an air extraction cheese (hereinafter referred to as “female cheese”) 922 that is a dedicated product for an air piping system using a multilayer pipe. As shown in FIG. 9, the female cheese 922 is connected in the middle of the main pipe line 110, and the main flow path part 922 a that communicates with the main pipe line 110, and the main flow path part 922 a branch downward. And a branch pipe 922b protruding upward from the bottom of the flow path part 922a.

  As a result, even if water is collected at the bottom of the main flow path portion 922a, the water does not flow out to the branch pipe 922b, but the water flows out to the air tool 106 connected to the female cheese 922 and supplied with air. There is no. However, female cheese 922 is a dedicated product for multilayer tubes, and has a complicated and expensive structure.

  As shown in FIG. 2, the air outlet 120 is coupled to the path branching section 121 that branches the path of the main pipeline 110 and the path branching section 121 with respect to the air outlet 920 configured from the female cheese 922. And an inverted U-shaped pipe line 122.

  The path branching part 121 of the air outlet 120 is arranged in the horizontal direction of the main pipe line 110 (FIG. 2) so as not to allow moisture accumulated at the bottom of the main pipe line 110 to flow out to the air tool provided on the downstream side of the air outlet 120. The X direction is attached so as to branch upward (Z direction in FIG. 2). The route branching part 121 is the cheese 102 and is provided in the middle route of the main pipeline 110 extending in the horizontal direction.

  As shown in FIG. 3, the cheese 102 forms a main channel 102A that extends linearly and a branch channel 102B that branches the main channel 102A (see FIG. 3C). The cheese 102 is connected to the main pipe line 110 so that the branch channel 102B faces upward (Z direction in FIG. 2) with respect to the horizontal direction (X direction in FIG. 2).

  The cheese 102 is formed of a synthetic resin and includes a connection port 20 to which the air pipe 101 is connected at the primary side, the secondary side, and the end of the branch channel 102B of the main channel 102A. Each connection port 20 of the cheese 102 is formed with a diameter substantially the same as that of the main pipeline 110.

  Each connection port 20 of the cheese 102 has an annular annular portion 20a formed in the cheese 102 body, an O-ring 20b housed inside the annular portion 20a, and an O-ring 20b inside the annular portion 20a. A chuck ring 20c to be incorporated and a nut 20d that covers the annular portion 20a from the outside and fits so as to store and hold the O-ring 20b and the chuck ring 20c are provided (see FIG. 3D).

  The O-ring 20b and the chuck ring 20c are formed in an annular shape having the same diameter, and the annular portion 20a has a first step portion 20f having the same diameter as the O-ring 20b and the chuck ring 20c inside. Thereby, in the assembly of the connection port 20, the O-ring 20b is accommodated in the annular portion 20a, is engaged with the first step portion 20f, the chuck ring 20c is incorporated from the outside, and the nut 20d is fitted (see FIG. 3 (C)).

  The nut 20d is formed in an annular shape, and a female screw is cut on the inner peripheral side surface. Correspondingly, the annular portion 20a is male threaded on the outer peripheral side surface. The nut 20d is fitted to the annular portion 20a by screwing the female screw of the nut 20d with the male screw of the annular portion 20a.

  The chuck ring 20c has a plurality of claw portions 20e having tapered surfaces that abut against the inner peripheral surface of the nut 20d. The nut 20d is screwed into and fitted into the annular portion 20a, so that the tapered surface is the nut 20d. The plurality of claw portions 20e are narrowed inward while contacting the inner peripheral surface (see FIG. 3D). Therefore, when the nut 20d is screwed and fitted into the annular portion 20a, the plurality of claw portions 20e of the chuck ring 20c are reduced in diameter.

  When the air pipe 101 is coupled to the cheese 102, the air pipe 101 is passed through the annular nut 20d, the chuck ring 20c, and the O-ring 20b while the screwing of the nut 20d is loosened. Inserted inside. The second step portion 20g is configured to have the same inner diameter as the air pipe 101, and is in contact with the end portion of the inserted air pipe 101. That is, the air pipe 101 is inserted into the annular portion 20a until it abuts on the second step portion 20g.

  With the air pipe 101 inserted into the annular portion 20a, the nut 20d is screwed into the annular portion 20a. Thereby, the chuck ring 20c grips the air pipe 101 when the diameter of the claw portion 20e is reduced. With the chuck ring 20c gripping the air pipe 101, the air pipe 101 is connected to the connection port 20 by being fixed between the nut 20d and the first step portion 20f of the annular portion 20a via an O-ring. They are connected by an embedded structure.

  At this time, the nut 20d is screwed into and fitted into the annular portion 20a, whereby the O-ring 20b is pressed toward the first step portion 20f via the chuck ring 20c. As a result, the O-ring 111b is crushed and brought into close contact with the air pipe 110, and the connection port 20 is reliably sealed.

  As the connection port 20 having such a fitting structure, for example, there is a joint connection port described in JP-A-2015-31342. Thereby, the air piping 101 is reliably connected to the cheese 102 by the fitting structure. In the connection of the air pipe 101 by the fitting structure, the pipes need not be threaded and the connection of the inverted U-shaped pipe line 122 becomes very easy. However, the fitting structure may be realized by other configurations.

  Compared with the air piping system 100 according to the present embodiment, in a conventional air piping system 800 using a steel pipe, as shown in FIG. 8, a male screw portion 801 a provided at an end of the piping 801 and a joint 802. The pipe and the joint are connected by screwing the female thread portion 802a provided on the pipe. That is, the pipe and the joint are connected by being threaded into a female thread provided in the joint by threading the pipe into a male thread. In this connection, sealing is performed by winding a seal tape around the male thread portion 801 a of the pipe 801.

  Therefore, the reverse U-shaped pipe line 822 is connected to the cheese 802, which is a T-shaped joint, by a screwed structure. Therefore, for example, the inverted U-shaped pipe line may not be attached at a desired angle (the angle in the θ direction in FIG. 8). Further, the inverted U-shaped pipe line 822 is manufactured by connecting the pipe 801 to the elbow 803 which is an L-shaped joint by a screwed structure. Therefore, for example, the pipe 801 facing the inverted U-shaped pipe line 822 may have a twisted relationship (a relationship in which the angle in the δ direction in FIG. 8 is shifted).

  In particular, in connection with a screw-in structure, it is necessary to determine the screw-in amount of the pipe and the angle between the inserted pipe and the joint at the same time. Need to return. However, when the screwing is restored, the sealing tape loses the sealing effect, and the joint is removed from the pipe and the work is performed again by replacing the sealing tape. That is, since the sealing tape loses the sealing effect by returning the screwing, the connection angle between the joint and the pipe cannot be finely adjusted, and the joint needs to be removed once. Therefore, the connection by the screwing operation has been an extremely complicated operation.

  On the other hand, in the air piping system 100 according to the present embodiment, pipe threading is unnecessary, the direction of the inverted U-shaped piping path 122 is determined (positioning in the θ direction in FIG. 2), and the inverted U-shaped piping 822 is manufactured. Becomes simple, and the construction of the air outlet 120, which has been complicated, becomes very easy.

  Referring to FIG. 2 again, the inverted U-shaped pipe line 122 in the first embodiment extends upward from the path branching part 121, and forms a first vertical pipe part 122a that forms a path in the vertical direction. A first path changing unit 122b that changes the path in the horizontal direction from the end of the vertical pipe part 122a, a horizontal pipe part 122c that extends from the first path changing unit 122b in the horizontal direction and forms a path in the horizontal direction, A second route changing unit 122d that changes the route downward from the end of the horizontal piping unit 122c, and a second vertical piping unit 122e that extends downward from the second route changing unit 122d and forms a route in the vertical direction. Prepare. The lower end of the second vertical piping part 122e extends to a position exceeding the lower end of the first vertical piping part 122a, and is connected to the air hose 107. When the air take-out port takes air into the air device, the end of the second vertical pipe portion 122e, that is, the end of the inverted U-shaped pipe line 122 extends downward to a point where it can be connected to the air supply port of the air device. It may be.

  The first and second path changing portions 122b and 122d of the inverted U-shaped pipe line 122 are configured by an elbow 103 having a fitting structure, and change the flow path to approximately 90 degrees. As shown in FIG. 4, the elbow 103 includes a connection port 30 having a fitting structure similar to that of the cheese 102 described above at the end of the primary flow path and the end of the secondary flow path. .

  As with the connection port 20, the connection port 30 includes an annular annular portion 30a formed in the elbow 103 main body, an O-ring 30b housed inside the annular portion 30a, and an O-ring 30b inside the annular portion 30a. And a nut 30d that covers the annular portion 30a from the outside, and fits to hold and hold the O-ring 30b and the chuck ring 30c (see FIG. 4D). . The connection port 30 has the same configuration as that of the connection port 20 and will not be described in detail. The elbow 103 can be coupled with the air pipe 101 by a connection structure 30 through the connection port 30.

  In the conventional air piping system using a steel pipe, the inverted U-shaped piping path 822 is connected to the elbow 803 by a screwed structure (see FIG. 8). Compared to this, in the inverted U-shaped pipeline 122 of the air piping system 100 according to the present embodiment, threading of the piping is unnecessary, and the direction of each piping portion of the inverted U-shaped pipeline 122 (θ in FIG. 2) is determined. Determination of the angle in the direction and δ direction) becomes easy, and the manufacture of the complicated inverted U-shaped pipe line 122 becomes very easy.

[Construction method of the first air piping system]

  Next, a construction method (ST1) of the air piping system 100 according to the first embodiment of the present invention will be described with reference to FIG. The construction method (ST1) includes a first step (ST1-1) for forming the route branch portion 121 in the main pipeline 110, a second step (ST1-2) for manufacturing the inverted U-shaped pipeline 122, And a third step (ST1-3) for connecting the inverted U-shaped pipe line 122 to the path branching part 121.

  In the first step (ST 1-1), the main pipeline 110 is separated into a primary side and a secondary side, and the respective ends are fitted into the horizontal connection ports 20 of the cheese 102, whereby the cheese 102. Are connected to the main pipeline 110. Thereby, the primary side and the secondary side of the main pipe line 110 communicate with each other through the main flow path 102 </ b> A of the cheese 102. In addition, the cheese 102 is attached so that the main channel 102A is branched into the branch channel 102B inside the cheese 102 (see FIG. 3D), and the connection port 20 at the end of the branch channel 102B faces upward. It is done. As a result, the route is branched upward.

  Since the cheese 102 is connected to the main pipeline 110 by an inset structure, it is not necessary to rotate the cheese 102 to screw it. Therefore, the cheese 102 can be connected to the air pipe 101 while the direction is fixed so that the direction of the branch flow path 102B faces upward. This facilitates cheese orientation.

  The first step (ST1-1) is a linear shape of the cheese 102 between the first step of cutting the main pipe line 110 after the air pipe system 100 is laid and the cut main pipe line 110. And a second step of coupling the cut ends of the main pipe line 110 to the respective connection ports 20 on the primary side and the secondary side communicating with each other by a fitting structure. By doing so, after the air piping system 100 is laid once, the air outlet 120 can be additionally attached.

  In the second step, the first vertical piping portion 122a, the first route changing portion 122b, the horizontal piping portion 122c, the second route changing portion 122d, and the second vertical piping portion 122e are connected. Thus, the inverted U-shaped pipe line 122 is manufactured. The first and second path changing portions 122b and 122d are constituted by the elbow 103, and the pipes are coupled by the fitting structure of the connection port 30. Thereby, since piping can be combined with the direction of the elbow 103 fixed, manufacture of the reverse U-shaped piping path 122 becomes very easy.

  In the third step, the lower end portion of the first vertical piping portion 122a of the inverted U-shaped piping passage 122 formed in the second step is a route branch formed in the first step (ST1-1). It is connected to the cheese 102 of the part 121. Since the connection port 20 of the cheese 102 can be coupled with a pipe by a fitting structure, it is not necessary to rotate the inverted U-shaped pipeline 122. This makes it very easy to determine the angle of the inverted U-shaped pipeline 122.

  In the present embodiment, the lower end of the second vertical piping portion 122e extends beyond the horizontal position of the main piping passage 110, that is, the position of the lower end of the first vertical piping portion 122a. Therefore, in order to connect to the cheese 102, the reverse U-shaped pipeline 122 cannot be rotated (in the direction of θ in FIG. 2). It cannot be connected to the branch part 121. However, in the present embodiment in which the inverted U-shaped pipeline 122 is connected to the branch path by the fitting structure, it is possible to connect to the path branch portion 121 even after the inverted U-shaped pipeline 122 is formed.

[Second air piping system]

  Next, an air piping system 200 according to the second embodiment will be described. As shown in FIG. 6, the air piping system 200 according to the second embodiment includes a main pipeline 110 similar to the air piping system 100 according to the first embodiment, and an air outlet 220. The configuration of the air outlet 220 other than the inverted U-shaped pipe line 222 is the same as that of the first embodiment. Therefore, in the following description, only the inverted U-shaped pipe line 222 will be described in detail.

  The inverted U-shaped pipe line 222 of the air piping system 200 according to the second embodiment of the present invention is formed by bending one air pipe 101. Like the other air pipes, the air pipe 101 has a three-layered cylindrical shape including a first resin layer 101a, a metal layer 101b, and a second resin layer 101c from the inside (the air pipe 101 in FIG. 7). The thickness of each layer is selected so that bending can be performed.

  The inverted U-shaped pipe line 222 extends upward from the path branching part 121 and changes the path in the horizontal direction from the end of the first vertical pipe part 222a and the first vertical pipe part 222a that forms the path in the vertical direction. The first route changing unit 222b, the horizontal piping unit 222c extending in the substantially horizontal direction from the first route changing unit 222b and forming the route in the substantially horizontal direction, and the route changing from the end of the horizontal piping unit 222c downward. A second route changing unit 222d and a second vertical piping unit 222e extending downward from the second route changing unit 222d and forming a route in the vertical direction are provided. The lower end of the second vertical piping portion 222e extends to a position exceeding the lower end of the first vertical piping portion 222a, and is connected to the air hose 107.

  In the air piping system 200 according to the present embodiment, since the inverted U-shaped pipe line 222 is formed by bending a single pipe, the boundaries of the respective parts of the inverted U-shaped pipe path 222 are virtual. It becomes. However, the inverted U-shaped pipe line 222 only needs to form an inverted U-shaped path as a whole. Moreover, each piping part should just extend substantially linearly, and may be curving.

  In the air piping system 200, the reverse U-shaped pipe line 222 is formed by bending and bending a single pipe. Therefore, compared with the case where the reverse U-shaped pipe line is formed using a joint, Risk of leakage and pressure loss can be reduced.

[Second air piping system construction method]

  Next, with reference to FIG. 7, the construction method (ST2) of the air piping system 200 concerning the 2nd Embodiment of this invention is demonstrated. The construction method of the air piping system 200 according to the present embodiment includes a first step (ST2-1) for forming the path branching portion 121 in the main piping line 110 and a second process for manufacturing the inverted U-shaped piping line 222. The process (ST2-2) and the 3rd process (ST2-3) which connects the reverse U-shaped piping line 222 to the route branch part 121 are included.

  The first step (ST2-1) and the third step (ST2-3) are the first step (ST1-1) and the third step of the construction method of the air piping system 100 according to the first embodiment. Each of the steps (ST1-3) is the same step. Therefore, in the description of the construction method of the air piping system 200 according to the second embodiment, only the second step will be described in detail.

  In the second step, it is formed by bending one pipe. The air pipe 101 is bent by a well-known pipe bending apparatus (not shown). However, the air pipe 101 according to the present embodiment can be bent manually without using an apparatus.

  Therefore, for example, by manually bending the pipe, the route branch portion 121 is formed in the main pipeline 110, and after connecting the straight air pipe 101 to the route branch portion 121, The inverted U-shaped pipe line 222 can be manufactured by bending. The reverse U-shaped pipe line only needs to be formed in a substantially U shape, and may have another shape.

  The air outlets 102 and 202 according to the first or second embodiment of the present invention may be connected to an air supply port of an air device. In this case, the inverted U-shaped pipe lines 122 and 222 are coupled to the air supply port at the end opposite to the path branching part 121 connected to the main trunk line 110. The air device is large and heavy and cannot be easily moved, and the position of the air supply port is fixed. Therefore, in order to connect the end of the inverted U-shaped pipe line to the air supply port, it is necessary to manufacture an accurate inverted U-shaped pipe line and lead the end accurately to the air supply port.

  The conventional inverted U-shaped pipe line 822 having a screwed structure with a steel pipe is difficult to adjust the screwing amount and determine the angle, and if it does not depend on advanced craftsmanship, the production of an accurate inverted U-shaped pipe line 822 and the air supply port It was difficult to lead. For example, even if the screwing amount is misadjusted and there is a misalignment of several millimeters, it is necessary to redo the production of the inverted U-shaped pipe line or lead the work. However, the inverted U-shaped pipe line with the fitting structure is easy to manufacture and leads to the end part easily.

  Furthermore, according to the reverse U-shaped piping paths 122 and 222 manufactured using the cheese 102 and the elbow 103, the angle connecting the cheese 102 and the elbow 103 can be easily adjusted. The work of leading the end of the U-shaped pipe line to the air supply port of the air device (for example, angle adjustment in the θ or δ direction in FIG. 2) is facilitated.

  The present invention can be used for an air piping system that supplies compressed air.

100, 200 Air piping system 101 Air piping 102 Cheese 102A Main flow path 102B Branch flow path 103 Elbow 110 Main piping path 120, 220 Air outlet 121 Path branching section 122, 222 Reverse U-shaped piping paths 122a, 222a First vertical Piping sections 122b and 222b First path changing sections 122c and 222c Horizontal piping sections 122d and 222d Second path changing sections 122e and 222e Second vertical piping section

Claims (10)

An air piping system that extends in the horizontal direction and includes a main pipe line for supplying compressed air, and an air outlet for taking out compressed air from the main pipe line,
The air outlet is
A path branching section provided in the middle path of the main pipeline and branching the path upward from the horizontal direction;
An inverted U-shaped pipe line having one end connected to the path branch part;
The inverted U-shaped pipe line is formed in a U shape by bending one air pipe,
The path branching portion is characterized in that the inverted U-shaped pipe line is connected by a fitting structure,
Air piping system.
The air piping system according to claim 1, wherein the one air pipe is a multilayer pipe including a resin layer and a metal layer.
The air pipe system according to claim 2, wherein the multilayer pipe is a three-layer pipe including a resin layer, a metal layer, and a resin layer from the inside.
A main pipeline extending in a first horizontal direction for supplying compressed air;
An air piping system comprising an air outlet for taking out compressed air from the main pipeline,
The air outlet is
A path branching portion provided in a middle path of the main pipeline, and branching the path upward from the first horizontal direction;
A first vertical pipe connected to the path branch and extending upward and forming a path in the vertical direction;
A first path changing unit that changes a path in a second horizontal direction intersecting with the first horizontal direction from an end of the first vertical piping unit;
A horizontal piping section extending in a second horizontal direction from the first path changing section and forming a path in a second horizontal direction;
A second route changing unit that changes the route downward from the end of the horizontal piping unit;
A second vertical piping section extending downward from the second path changing section and forming a path in the vertical direction;
The route branching portion is an air piping system in which a first vertical piping portion is connected by a fitting structure.
The air piping system according to claim 4, wherein the first path changing unit is connected to the first vertical piping unit and the horizontal piping unit by a fitting structure.
The air piping system according to claim 4 or 5, wherein the second path changing unit is connected to the horizontal piping unit and the second vertical piping unit by a fitting structure.
The air piping system according to claim 4, wherein at least one of the first and second path changing units is formed by bending a pipe.
The air piping system according to any one of claims 1 to 7, wherein the inverted U-shaped piping path is connected to an air supply port whose position is fixed at an end opposite to the path branching section.
A construction method of an air piping system for supplying compressed air,
A first step of forming a route branching portion for branching the route upward in a main pipeline that extends in a first horizontal direction and forms a route of compressed air;
A first vertical piping section extending upward; a first path changing section for changing a path from a terminal end of the first vertical piping section to a second horizontal direction orthogonal to the first horizontal direction; and the first path. A horizontal piping portion extending in the second horizontal direction from the changing portion, a second route changing portion changing the route downward from the end of the horizontal piping portion, and a horizontal position of the main piping route from the second route changing portion A second step of manufacturing an inverted U-shaped piping path comprising a second vertical piping section extending downward beyond
A third step of connecting a starting end of the first vertical path of the inverted U-shaped pipe line to the path branching portion;
The first vertical pipe part is connected to the path branch part by a fitting structure,
How to install an air piping system.
The first step includes a first step of cutting the main pipeline,
The cut ends of the main pipe line are inserted into the respective connection ports on the primary side and the secondary side communicating with the first horizontal direction of the path branch part between the cut main pipe lines by the structure. The construction method of the air piping system of Claim 9 including the 2nd step to couple | bond.