KR102574225B1 - Air piping system, and method for construction of air piping system - Google Patents

Abstract

(Problem) The present invention provides an air piping system capable of easily attaching an air outlet having a simple structure without using a dedicated product.
(Solution) One air piping system according to the present invention includes a main piping line extending in the horizontal direction for supplying compressed air, and an air outlet for taking compressed air out of the main piping line. The air outlet includes a path branching part installed in the middle path of the main pipe line and branching the path upward from a horizontal direction, and an inverted U-shaped pipe line having one end connected to the path branching part. The inverted U-shaped piping passage is formed by bending one air pipe, and the path branching portion is connected to the inverted U-shaped piping passage by a fitting structure.

Description

Air piping system and construction method of air piping system {AIR PIPING SYSTEM, AND METHOD FOR CONSTRUCTION OF AIR PIPING SYSTEM}

The present invention relates to an air piping system and a construction method of the air piping system, and more particularly, to an air piping system having an air outlet and construction of forming an air outlet in the air piping system. It's about how.

In various factories, such as automobile factories, food factories, and semiconductor factories, compressed air compressed by a compressor passes through pipes to air tools such as air guns at work sites, air cylinders, etc. supplied to an air device having an air driving source of The supply path of the compressed air is called an air piping system, and the piping forming the air piping system is generally called an air piping. Air piping is mainly classified into a steel pipe made of iron, a resin pipe made of resin, a multi-layer pipe in which a resin layer and a metal layer are stacked (see Non-Patent Document 1), and the like.

In the air piping system, a supply path of compressed air is composed of an air piping and a coupling connecting the piping to the piping. The air piping system is designed with a laying route in consideration of the size of the factory or other facilities to be applied, so that the air piping is formed in a desired length and shape to form a desired route. is attached by connecting In addition, in the air piping system installed in the factory, an air outlet for taking out compressed air is formed in the middle of the path to supply compressed air to an air tool or an air device.

However, the compressed air flowing through the path of the air piping system contains moisture generated by dew condensation, etc., and if this flows out to an air tool or air device together with the compressed air, the air tool or air device may malfunction or the air tool There was a problem specific to the air piping system that adversely affects the work that acts on it. Therefore, various studies have been conducted on the air outlet so that moisture in the air pipe does not flow out to the air tool.

In a conventional air piping system using steel pipes, for example, as a study to prevent water from flowing out, the route is branched upward from the main piping route extending in the horizontal direction of the piping system. There is an air piping system in which an air outlet (see FIG. 8) is formed using an inverted U-shaped piping passage in which a path is formed so as to go down again. In this air outlet, by diverging the path upwards, only air can be taken out without letting moisture accumulated on the bottom side of the main piping extending in the horizontal direction flow out through the air outlet.

In addition, in the air piping system using multi-layer pipes described in, for example, Non-Patent Document 1, an air blowing cheese having a special structure is used as an air blowing port (see Fig. 9). This cheese for air extraction is installed in the middle of a main piping line extending in the horizontal direction, and a main flow path is formed to connect the primary side and the secondary side in the horizontal direction, and a flow path is formed in the middle of the main flow path. A branch flow path for branching and distributing compressed air is formed.

In this cheese for air blowing, a branch pipe extending from the branch side to the middle of the main flow path is provided as a branch flow path. Accordingly, even when attached to the air pipe with the branch side down, the branch pipe rises beyond the bottom of the main flow path within the main flow path, so that moisture accumulated at the bottom of the main flow path extending in the horizontal direction is discharged to the air outlet. You can only take out air without doing it.

: Catalog "LIGHTAIR (registered trademark)", TABUCHI Corp., issued in October 2014

However, in the conventional air piping system using steel pipes, as shown in FIG. 8, T-shaped couplings and L-shaped couplings are used to manufacture route branching parts and inverted U-shaped pipelines. do. A female thread is formed in the connection port of these couplings, and a male thread is formed in the end part of the pipe to be connected, and the pipe is coupled by the screw fastening structure. In this connection, air leakage is prevented by winding a sealing tape for sealing around the male thread of the pipe and screwing the pipe to the coupling to an appropriate portion.

Therefore, in the construction of the air outlet, threaded groove forming processing is performed on the piping. [0003] In the process of forming threaded piping, a large-sized device or technical skills are required, and the construction is complicated. Also, in the coupling by the screw fastening structure, the screw fastening amount of how far the pipe is screwed to the coupling and the angle at which the pipe is screwed to the coupling must be determined at the same time.

If the pipe is tightened excessively and the screw tightening is reversed, the sealing tape loses its sealing effect. Therefore, in this case, it was necessary to replace the sealing tape, so that the pipe had to be removed from the coupling and the screw fastening operation had to be repeated. Thus, in the coupling by the screw fastening structure, construction has become complicated.

Also, when supplying air from the air intake port to the air unit, since the lower end of the inverted U-shaped piping is connected to the air supply port of the air unit, the air supply port of the air unit whose position is fixed is accurately measured from the branching path. It was necessary to manufacture an inverted U-shaped piping passage with dimensions and angles, and accurately guide the end of the inverted U-shaped piping passage to the air supply port. However, it was a very difficult task to manufacture such an inverted U-shaped pipeline by means of a screw fastening structure.

Therefore, in the conventional air piping system using steel pipes, the manufacture of inverted U-shaped piping passages and the construction of air outlets from the point of determining the position and angle of connecting the inverted U-shaped piping passages to the branching part are far from reality. It was far.

Further, in a piping system using a multi-layer tube, an air outlet can be easily formed by using an air outlet cheese, but the air outlet cheese, which is an exclusive product for the air outlet, has a complicated structure and is expensive. Also, since the cheese for air ejection is provided with a protruding branch pipe in the path within the coupling, the diameter of the branch pipe becomes smaller than that of the piping, and air at a desired flow rate may not be ejected. In addition, when the water content is high as it reaches the opening of the branch pipe protruding beyond the bottom of the main flow path, there is a case where the water flows out into the branch flow path.

The present invention has been made to solve these problems, and an object of the present invention is to provide or construct an air piping system that does not use a special product, has an air outlet with a simple structure, and is easy to install.

One air piping system according to the present invention includes a main piping line extending in a horizontal direction and supplying compressed air, and an air outlet for taking out compressed air from the main piping line. The air outlet includes a path branching part installed on a path of the main pipe line and branching the path upward from a horizontal direction, and an inverted U-shaped pipe line having one end connected to the path branching part. It is characterized in that the inverted U-shaped piping passage is formed into a U-shape by bending one air pipe, and the path branch portion connects the inverted U-shaped piping passage by a fitting structure.

According to this air piping system, since the inverted U-shaped piping passages are connected to the route branching portion by the fitting structure, the inverted U-shaped piping passages serving as air outlets can be easily connected to the main piping passages. As a result, compared to the conventional screw fastening structure used for connecting steel pipes, it is unnecessary to form threaded piping and it is easy to adjust the angle of attachment of the inverted U-shaped pipe, so that the complicated inverted U-shaped pipe is attached. The work becomes very easy.

Furthermore, according to this air piping system, since the inverted U-shaped piping is formed from a single air piping by bending, it is easy to manufacture the inverted U-shaped piping, and the inverted U-shaped piping in the conventional steel pipe. Compared to the manufacturing by the screw fastening structure, it is unnecessary to form a threaded pipe, and the orientation of each pipe part of the inverted U-shaped pipe is easy to determine, so that the complicated inverted U-shaped pipe is very easy to manufacture.

In addition, according to this air piping system, since the inverted U-shaped piping is made of one air piping by bending, the path change portion of the inverted U-shaped piping is formed by an elbow (L-shaped coupling), Compared to the conventional inverted U-shaped piping of steel pipe, there is no need to use a coupling, reducing the risk of pressure loss and air leakage.

It is preferable that the one air pipe in the one piping system is a multi-layer pipe including a resin layer and a metal layer. According to this pipe, in the case of a resin tube containing only a resin layer, a tube having low rigidity could not be maintained in a desired shape, or a tube having too high elasticity could not be fixed in a desired shape due to repulsive force, whereas a multilayer tube including a metal layer In this case, 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. Accordingly, an inverted U-shaped piping path having a desired shape can be easily manufactured.

Preferably, the multi-layer pipe in the single piping system is a three-layer pipe composed of a resin layer, a metal layer, and a resin layer from the inside. According to this pipe, it is fixed in a desired shape by plastic deformation of the metal layer, and the inside and outside resin layers reinforce the strength of the pipe. In addition, since the inner layer is a resin layer, corrosion due to 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 line extending in a first horizontal direction and supplying compressed air, and an air outlet for taking out compressed air from the main piping line. The air outlet may include a path branching part installed in a path of the main piping and branching the path upward from the first horizontal direction, and a second path connected to the path branching part and extending upward to form a path in the vertical direction. A first vertical pipe part, a first path changing part that changes a path from the end of the first vertical pipe part to a second horizontal direction intersecting the first horizontal direction, and extending from the first path changing part in a second horizontal direction. a horizontal pipe part forming a path in the second horizontal direction, a second path change part that changes a path downward from the end of the horizontal pipe part, and a path extending downward from the second path change part to form a path in the vertical direction. A second vertical pipe portion to be formed is provided. The path branching part is connected to the first vertical pipe part by a fitting structure.

According to this air piping system, the inverted U-shaped piping path formed by the first vertical piping part, the first route changing part, the horizontal piping part, the second path changing part and the second vertical piping part is the path of the main piping route. It is connected to the branching part by the fitting structure. Since the fit-in structure is easy to connect, compared to the connection by the screw fastening structure of the inverted U-shaped piping, which was required for conventional steel pipes, the formation of threaded piping is unnecessary, and the angle of attachment of the inverted U-shaped piping is reduced. Adjustment becomes easy, and the work of attaching the complicated inverted U-shaped pipeline becomes very easy.

The first route changing portion in the other air piping system may be connected to the first vertical piping portion and the horizontal piping portion by a fitting structure. According to this air piping system, compared to the connection of the air outlet by the screw fastening structure required for conventional steel pipes, the formation of threaded piping is unnecessary, and the angle of the connection of the piping parts of the inverted U-shaped piping is reduced. Adjustment becomes easy, and manufacturing of the complicated inverted U-shaped piping path becomes easy.

In addition, since the piping and the piping are connected by the fitting structure, there is no limit on the length of the first vertical piping part and the horizontal piping part for thread forming process. Piping remaining from the formed piping can be used.

That is, in the conventional inverted U-shaped pipe line of steel pipe, a large-sized device is required to form the threaded portion of the steel pipe, and the first vertical pipe part and the horizontal pipe part of a certain length are required to adapt to the large-sized device. However, in this air piping system, since the piping in the inverted U-shaped piping path is connected to each other by the fit-in structure, there is no need to form threaded piping, and the piping left over from manufacturing the air outlet can be used, and the air piping can be piped without wasting piping. The system can be built efficiently.

In the other air piping system described above, the second route changing portion may be connected to the horizontal piping portion and the second vertical piping portion by a fitting structure. According to this air piping system, compared to the connection of the air outlet by the screw fastening structure required for conventional steel pipes, the formation of threaded piping is unnecessary, and the angle of the connection of the piping parts of the inverted U-shaped piping is reduced. Adjustment becomes easy, and manufacturing of the complicated inverted U-shaped piping path becomes easy.

In addition, since the piping and the piping are connected by the fitting structure, there is no restriction on the length of the horizontal piping part and the second vertical piping part for thread forming process, so that other parts of the air piping system can be made without cutting the dedicated piping. Piping remaining from the formed piping can be used.

That is, in the conventional inverted U-shaped pipe line of steel pipe, a large-sized device is required to form the threaded portion of the steel pipe, and a horizontal pipe part and a second vertical pipe part of a certain length are required to adapt to the large-sized device. However, in this air piping system, since the piping in the inverted U-shaped piping path is connected to each other by the fit-in structure, there is no need to form threaded ribs, and the piping remaining after manufacturing the air outlet can be used. The system can be built efficiently.

At least either one of the first and second route changing parts in the other piping system may be formed by bending a pipe. Since the coupling can be reduced accordingly, construction of the air outlet is facilitated and the risk of air leakage is reduced.

In one or other air piping system according to the present invention, the end of the inverted U-shaped piping on the opposite side to the branching portion of the path may be connected to an air supply port having a fixed position. In order to connect the end of the inverted U-shaped pipeline to the fixed air supply port, it is necessary to accurately manufacture and deliver the inverted U-shaped pipeline. It was very difficult to manufacture a more accurate inverted U-shaped piping passage in the conventional screw fastening structure, but if the connection is by the fit-in structure, an accurate inverted U-shaped piping passage can be easily manufactured and the end is accurately guided to the air supply port. can do.

A method of constructing an air piping system according to the present invention is a method of forming a path branching part for branching the path upward in a main piping line extending in a first horizontal direction and forming a path for compressed air in order to supply compressed air. Step 1, a first vertical pipe part extending upward, a first path changing part for changing a path from the end of the first vertical pipe part to a second horizontal direction orthogonal to the first horizontal direction, the first path changing part A horizontal pipe part extending in a second horizontal direction from, a second path change part for changing a path downward from the end of the horizontal pipe part, and a second path change part extending downward beyond the horizontal position of the main pipeline from the second path change part A second step of fabricating an inverted U-shaped pipe passage comprising a second vertical pipe section, and a third step of connecting the start end of the first vertical pipe section of the inverted U-shaped pipe passage to the branching portion of the path. The first vertical pipe part is connected to the path diverging part by a fitting structure.

In the conventional air piping system using steel pipes, in order to connect to the main piping after forming the inverted U-shaped piping when constructing the air outlet, when the second vertical piping extends beyond the horizontal position of the main piping. However, the inverted U-shaped piping could not be rotated due to the screw fastening structure, so it was impossible to connect to the branching part. In addition, when the air piping system is attached to a ceiling or the like, it is difficult to sequentially manufacture an inverted U-shaped piping passage by means of a plurality of couplings in high-altitude work. However, in this construction method, after forming the inverted U-shaped piping passage serving as the air outlet, the inverted U-shaped piping can be connected to the branching part of the main piping without rotation, so the construction of the air outlet is very simple.

In the first step of the construction method of the air piping system, the first step of cutting the main pipe line and the first side of the path diverging part in the first horizontal direction passing between the cut main pipe line and the second step A second step may be included to engage the cut ends of the main piping with a fitting structure to each connecting port on the vehicle side. According to this construction method of the air piping system, it is possible to additionally manufacture the air outlet after constructing the piping system.

An object of the present invention is to provide an air piping system capable of easily attaching an air outlet having a simple structure without using a dedicated product.

1 is a perspective view showing an air piping system according to a first embodiment of the present invention.
Fig. 2 is an enlarged view of F2 in Fig. 1, and is a diagram showing an air outlet of the air piping system according to the first embodiment of the present invention.
Fig. 3 is a view showing cheese constituting the path branching part of the air outlet in Fig. 2, wherein (A) is a side view, (B) is a front view, (C) is a front sectional view, and (D) is a front exploded view. indicate
Fig. 4 is a view showing an elbow constituting the path changing part of the air outlet in Fig. 2, wherein (A) is a side view, (B) is a front view, (C) is a front sectional view, and (D) is a front exploded view. indicate
Fig. 5 is a flowchart showing a method of constructing an air outlet of the air piping system according to the first embodiment of the present invention.
Fig. 6 is a diagram showing an air outlet of an air piping system according to a second embodiment of the present invention.
Fig. 7 is a flowchart showing a method of constructing an air outlet of an air piping system according to a second embodiment of the present invention.
Fig. 8 is a view showing an air outlet using a conventional steel pipe.
Fig. 9 is an enlarged exploded view of F9 in Fig. 2, and is a view showing an air blow-out port of a known cheese for air blow-out, which is an exclusive product.

[First air piping system]

First, a piping system (hereinafter, referred to as "air piping system") 100 for supplying compressed air according to the first embodiment of the present invention will be described. As shown in FIG. 1, the air piping system 100 includes a plurality of piping and various couplings such as linear, T-shaped, and L-shaped couplings for connecting the piping to the piping, endless loop formed into a shape. The piping used in the air piping system 100 is called an air piping 101. In addition, the T-shaped coupling is referred to as a cheese 102, and the L-shaped coupling is referred to as an elbow 103.

The air piping system 100 is suspended from the ceiling by means of a suspending band 104. In addition, the air piping system 100 is formed in a loop shape that is roughly a horizontal plane, but in the case of intersecting with other facilities, the piping is bent by bending to avoid other facilities. (敷設) has been. The air piping system 100 is connected via a valve 105 to a compressor (not shown) serving as 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 consists of three layers: a first resin layer 101a, a metal layer 10lb, and a second resin layer 101c from the inside. It is configured in a cylindrical shape (refer to a partially enlarged view of the air pipe 101 in FIG. 5). The air pipe 101 can be bent and maintains a bent state by plastic deformation of the metal layer 10 lb. In addition, the air pipe 101 is secured with appropriate rigidity by forming the first and second resin layers 101a and 101c.

The air pipe 101 can be bent using a conventionally well-known bending device (not shown in the drawings). However, in the air pipe 101 according to the present embodiment, the thicknesses of the resin layers 101a and 101c and the metal layer 10lb are appropriately selected, and the bending process can be performed manually without using a bending device.

The air piping system 100 uses an air tool such as an air gun, an air drill, or an air sander, or an air driving source such as an air cylinder or an air pump. The purpose is to supply compressed air to an air device provided, and in this embodiment, an air gun 106 is exemplified as an air tool. The air gun 106 is connected to the air outlets 120 and 920 in a suspended state via a coiled air hose 107. However, the air outlet may be connected to the air supply port to which the air device is fixed.

Accordingly, compressed air is supplied to the air gun 106 from the compressor through the air piping system 100. The air piping system 100 includes a plurality of main piping passages 110 extending linearly in the horizontal direction, and air outlets 120 (eg, For example, F2 in FIG. 1) or an air outlet 920 (for example, F9 in FIG. 1) is formed.

The air outlet 920 is composed of cheese for air blowing (hereinafter referred to as mass cheese) 922, which is an exclusive product of an air piping system using a multi-layer pipe. As shown in FIG. 9, the female cheese 922 is connected in the middle of the main pipeline 110 and is connected to the main pipeline 110, the main channel section 922a and the main channel section A branch pipe 922b branching the path 922a downward and protruding upward from the bottom of the main passage 922a is provided.

Accordingly, even if moisture accumulates at the bottom of the main flow passage 922a, the moisture does not flow out to the branch pipe 922b, and the air tool 106 connected to the scalpel 922 to supply air so that moisture does not leak out. However, the scalpel cheese 922, as a product exclusively for multi-layer tubes, has a complicated structure and is expensive.

Regarding the air outlet 920 composed of the scalpel cheese 922, the air outlet 120, as shown in FIG. 121) and an inverted U-shaped pipeline 122 coupled to the path branching portion 121.

The path branching part 121 of the air outlet 120 prevents water collected at the bottom of the main pipe 110 from flowing out to an air tool installed downstream of the air outlet 120. ) is attached so that the path in the horizontal direction (X direction in Fig. 2) diverges upward (Z direction in Fig. 2). The path branching part 121 is installed in the middle path of the main pipeline 110 extending in the horizontal direction as the cheese 102 .

As shown in Fig. 3, the cheese 102 forms a main flow passage 102A extending linearly and a branch passage 102B branching off the main flow passage 102A (see Fig. 3(C)). The cheese 102 is connected to the main pipeline 110 so that the branch passage 102B is directed upward (direction Z in Fig. 2) relative to the horizontal direction (direction X in Fig. 2).

The cheese 102 is made of synthetic resin and connects the air piping 101 to the primary side and the secondary side of the main flow path 102A and to the ends of the branch flow path 102B (20). ) is provided. Each connection port 20 of the cheese 102 is formed with a bore approximately the same as that of the main pipe 110.

Each connection port 20 of the cheese 102 includes an annular annular portion 20a formed on the main body of the cheese 102, an O-ring 20b accommodated inside the annular portion 20a, and a ring O-ring 20b and chuck ring 20c are accommodated by covering the chuck ring 20c inserted through the O-ring 20b inside the shaped part 20a and the annular part 20a from the outside. A nut 20d fitted to support is provided (see Fig. 3(D)).

The O-ring 20b and the chuck ring 20c are formed in an annular shape of the same diameter, and the annular part 20a has a first step portion (Section 1) having the same diameter as the O-ring 20b and the chuck ring 20c. A control part (20f) is provided inside. Accordingly, in assembling the connector 20, the O-ring 20b is accommodated in the annular portion 20a and attached to the first stepped portion 20f, the chuck ring 20c is inserted from the outside, and the nut 20d is It fits (see Fig. 3(C)).

The nut 20d is formed in an annular shape, and a female thread is formed on the inner circumferential side surface. Correspondingly, the annular portion 20a has a male thread formed on the outer circumferential side surface. The nut 20d is fitted to the annular portion 20a by screwing the female thread of the nut 20d to the male thread of the annular portion 20a.

The chuck ring 20c has a plurality of claw parts 20e having a tapered surface in contact with the inner circumferential surface of the nut 20d, and the nut 20d is attached to the annular part 20a. By screwing and fitting, the plurality of claw portions 20e are narrowed inward while the tapered surface contacts the inner circumferential surface of the nut 20d (see Fig. 3(D)). Therefore, the diameter of the plurality of claw portions 20e of the chuck ring 20c is reduced by screwing and fitting the nut 20d to the annular portion 20a.

When the air pipe 101 is coupled to the cheese 102, in a state in which the screw connection of the nut 20d is loosened, the air pipe 101 includes the annular nut 20d, the chuck ring 20c, and the O-ring ( 20b) and is inserted into the annular portion 20a. The second stepped portion 20g is configured to have the same inner diameter as the air pipe 101, and comes into contact with the end of the inserted air pipe 101. That is, the air pipe 101 is inserted into the annular portion 20a until it comes into contact with the second stepped portion 20g.

With the air pipe 101 inserted into the annular portion 20a, the nut 20d is screwed into the annular portion 20a. Accordingly, the chuck ring 20c grips the air pipe 101 as the diameter of the claw part 20e is reduced. With the chuck ring 20c holding the air pipe 101, the air pipe 101 is fixed between the nut 20d and the first stepped portion 20f of the annular portion 20a through an O-ring. It is coupled to the connector 20 by a fit-in structure.

At this time, the O-ring 20b is pressed toward the first stepped portion 20f via the chuck ring 20c by screwing the nut 20d into the annular portion 20a. Accordingly, the O-ring (11lb) is crushed and brought into close contact with the air pipe 110, so that the connection port 20 is sealed reliably.

As the connection port 20 of such a fitting structure, there is a connection port of a coupling described in, for example, Japanese Unexamined Patent Publication No. 2015-31342. Accordingly, the air pipe 101 is securely connected to the cheese 102 by the fitting structure. In the connection of the air piping 101 by the fitting structure, thread forming process is not required for the piping, and the connection of the inverted U-shaped pipe 122 is very easy. However, the telescoping structure may be realized by other structures.

Compared to the air piping system 100 according to this embodiment, in the air piping system 800 using a conventional steel pipe, as shown in FIG. 8, the male threaded portion 801a formed at the end of the pipe 801 , the pipe and the coupling were connected by screwing the female threaded portion 802a formed in the coupling 802. That is, the piping and the coupling were connected by subjecting the piping to a thread forming process for forming a male thread and screwing into the female thread formed in the coupling. In addition, in this connection, sealing was performed by winding sealing tape around the male threaded portion 801a of the pipe 801.

Therefore, the inverted U-shaped piping passage 822 was connected to the cheese 802, which is a T-shaped coupling, by a screw fastening structure. Therefore, there were cases where, for example, the inverted U-shaped piping passage was not attached at the desired angle (the angle in the θ direction in FIG. 8). In addition, the inverted U-shaped piping path 822 was manufactured by connecting the pipe 801 to an elbow 803 that is an L-shaped coupling by a screw fastening structure. Therefore, for example, there has been a case where the piping 801 facing the inverted U-shaped piping passage 822 has a torsion relationship (a relationship where the angle in the δ direction in FIG. 8 deviates).

In particular, for connection by screw fastening structure, it is necessary to simultaneously determine the screw fastening amount of the pipe and the angle between the inserted pipe and the coupling. need to get back However, when screw fastening is reversed, the sealing tape loses its sealing effect, and the operation of removing the coupling from the pipe and exchanging the sealing tape is retried. That is, since the sealing tape loses its sealing effect by reversing the screw fastening, fine adjustment of the connection angle between the coupling and the pipe cannot be performed, and the coupling must be removed at once. Therefore, the connection by screw fastening was a very complicated operation.

On the other hand, in the air piping system 100 according to the present embodiment, it is unnecessary to form threaded piping, and direction determination of the inverted U-shaped piping passage 122 (positioning in the θ direction in FIG. 2) and inverted U-shaped piping The fabrication of the 822 becomes simple, and the complicated construction of the air outlet 120 becomes very easy.

Referring again to FIG. 2, the inverted U-shaped piping path 122 in the first embodiment extends upward from the path branch 121 to form a path in the vertical direction. A first route change section 122b for changing a route in the horizontal direction from the end of the first vertical pipe section 122a; A horizontal pipe part 122c extending horizontally from the path changing part 122b to form a path in the horizontal direction, and a second path changing part 122d changing the path downward from the end of the horizontal pipe part 122c. and a second vertical pipe part 122e extending downward from the second path changing part 122d to form a path in the vertical direction. The lower end of the second vertical pipe part 122e extends beyond the lower end of the first vertical pipe part 122a and is connected to the air hose 107. When the air outlet takes air out of the air device, the end of the second vertical pipe portion 122e, that is, the end of the inverted U-shaped pipeline 122 extends downward to a place where it can be connected to the air supply port of the air device. It is good even if it is.

The first and second path changing portions 122b and 122d of the inverted U-shaped pipe passage 122 are constituted by an elbow 103 of a fitting structure and change the flow path at approximately 90 degrees. As shown in Fig. 4, the elbow 103 is provided with connectors 30 having the same fitting structure as the cheese 102 described above at the ends of the primary side flow path and the end of the secondary side flow path.

The connector 30 includes an annular annular portion 30a formed on the main body of the elbow 103, an O-ring 30b accommodated inside the annular portion 30a, and a loop similar to the connector 20. The chuck ring 30c inserted through the O-ring 30b into the inside of the shaped part 30a and the annular part 30a are covered from the outside and fitted so as to accommodate and support the O-ring 30b and the chuck ring 30c. A nut 30d is provided (see Fig. 4(D)). The connector 30 has the same configuration as the connector 20, and detailed description thereof is omitted. The elbow 103 can be coupled to the air pipe 101 by a fitting structure through the connector 30.

In a conventional air piping system using steel pipes, the inverted U-shaped piping passage 822 is connected to the elbow 803 by a screw fastening structure (see Fig. 8). Compared to this, in the inverted U-shaped piping passage 122 of the air piping system 100 according to the present embodiment, it is unnecessary to form threaded piping, and direction determination of each pipe portion of the inverted U-shaped piping passage 122 (Fig. In 2, angle determination in the θ direction and δ direction) becomes easy, and the complicated manufacture of the inverted U-shaped pipeline 122 becomes very easy.

[Construction method of the 1st air piping system]

Next, with reference to FIG. 5, a construction method (ST1) of the air piping system 100 according to the first embodiment of the present invention will be described. The construction method (ST1) includes a first step (ST1-1) of forming the path branching portion 121 in the main piping 110, and a second step (ST1-1) of manufacturing the inverted U-shaped piping 122. 2) and a third step (ST1-3) of connecting the inverted U-shaped pipe passage 122 to the route branching portion 121.

In the first step (ST1-1), the main pipeline 110 is separated into a primary side and a secondary side, and each end is inserted into the joint 20 of the cheese 102 in the horizontal direction, so that the cheese 102 ) is connected to the main pipeline 110. Accordingly, the primary side and the secondary side of the main pipeline 110 communicate with each other through the main channel 102A of the cheese 102. In addition, inside the cheese 102, the main flow path 102A is branched into the branch flow path 102B (see FIG. 3(C)), and the connection port 20 at the end of the branch flow path 102B is directed upward. Cheese 102 is attached. Accordingly, the path diverges upward.

Since the cheese 102 is connected to the main piping 110 by a fitting structure, there is no need to rotate the piping to screw it on. Therefore, the cheese 102 can be connected to the air pipe 101 while the direction of the branch passage 102B is fixed upward. Accordingly, it is easy to determine the direction of the cheese.

In the first step (ST1-1), the first step of cutting the weekly pipe line 110 after the air piping system 100 is laid, and the cheese 102 between the cut weekly pipe line 110. ) may include a second step for coupling the cut end of the main pipeline 110 to each of the connectors 20 on the primary side and the secondary side through a fitting structure. By doing so, the air outlet 120 can be additionally attached after the air piping system 100 is laid once.

In the second process, the first vertical pipe part 122a, the first route change part 122b, the horizontal pipe part 122c, the second route change part 122d, and the second vertical pipe part 122e ) By being connected, the inverted U-shaped pipe passage 122 is produced. The first and second path changing parts 122b and 122d are configured by the elbow 103, and the pipe is coupled by the fitting structure of the connector 30. Accordingly, since the pipe can be coupled while the direction of the elbow 103 is fixed, the manufacture of the inverted U-shaped pipe passage 122 is very easy.

In the third step, the lower end of the first vertical pipe portion 122a of the inverted U-shaped pipe passage 122 formed in the second step is the cheese ( 102) is connected. Since the connection port 20 of the cheese 102 can couple the pipe by the fitting structure, there is no need to rotate the inverted U-shaped pipe passage 122. Accordingly, it is very easy to determine the angle of the inverted U-shaped pipe passage 122 .

In this embodiment, the lower end of the second vertical pipe part 122e extends beyond the horizontal position of the main pipe 110, that is, the position of the lower end of the first vertical pipe part 122a. Therefore, in order to connect to the cheese 102, the inverted U-shaped pipe passage 122 cannot be rotated (in the direction of θ in FIG. Afterwards, it cannot be connected to the path branching unit 121. However, in the present embodiment in which the inverted U-shaped pipe passage 122 is connected to the branching route by the fitting structure, it can be connected to the route branching portion 121 even after the inverted U-shaped pipe passage 122 is formed.

[Second air piping system]

Next, the 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 the same main piping duct 110 and air outlet 220 as the air piping system 100 according to the first embodiment, The configuration other than the inverted U-shaped pipe passage 222 of the air outlet 220 is the same as that of the first embodiment. Therefore, in the following description, only the inverted U-shaped piping path 222 will be described in detail.

The inverted U-shaped piping passage 222 of the air piping system 200 according to the second embodiment of the present invention is formed by bending one air pipe 101. The air piping 101, like other air piping, is composed of a three-layered cylindrical shape composed of a first resin layer 101a, a metal layer 10lb, and a second resin layer 101c from the inside (see FIG. 7). Referring to the enlarged view of the air pipe 101), the thickness of each layer is selected so that bending is possible.

The inverted U-shaped pipeline 222 extends upward from the path branch 121 to form a vertical path, and the first vertical pipe part 222a is horizontal from the end of the first vertical pipe part 222a. A first path changing unit 222b that changes a path in a direction, a horizontal pipe part 222c that extends in a substantially horizontal direction from the first path changing part 222b to form a path in a substantially horizontal direction, and a horizontal pipe part A second path changing part 222d that changes the path downward from the end of 222c, and a second vertical pipe part 222e extending downward from the second path changing part 222d to form a vertical path to provide The lower end of the second vertical pipe part 222e extends beyond the lower end of the first vertical pipe part 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 passage 222 is formed by bending one pipe, the boundary between each part of the inverted U-shaped pipe passage 222 is imaginary.的). However, the inverted U-shaped piping passage 222 should just be formed with an inverted U-shaped path as a whole. In addition, each piping part should just extend substantially linearly, and may be curved.

In the air piping system 200, since the inverted U-shaped piping 222 is formed by bending one pipe, the risk of air leakage compared to the case of forming an inverted U-shaped piping using a coupling and pressure loss can be reduced.

[Construction method of the 2nd air piping system]

Next, with reference to FIG. 7, a construction method (ST2) of the air piping system 200 according to the second embodiment of the present invention will be described. In the construction method of the air piping system 200 according to the present embodiment, the first step (ST2-1) of forming the path branch 121 in the main piping 110, and the inverted U-shaped piping 122 A second step (ST2-2) of manufacturing the , and a third step (ST2-3) of connecting the inverted U-shaped piping passage 122 to the route branching portion 121.

The first step (ST2-1) and the third step (ST2-3) are the first step (ST1-1) and the third step (ST1-) of the construction method of the air piping system 100 according to the first embodiment. 3) is the same process, respectively. 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, the air pipe 101 is formed by bending one pipe. The air pipe 101 is bent by a conventionally well-known pipe bending device (not shown). However, the air pipe 101 according to this embodiment can also be manually bent without using a device.

Therefore, for example, by manually bending the pipe, after forming the path branch 121 in the main piping 110 and connecting one straight air pipe 101 to the path branch 121, An inverted U-shaped pipe passage 122 may be produced by bending one pipe. The inverted U-shaped piping path should just be formed in a substantially U-shape, and may have other shapes.

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 pipelines 122 and 222 are connected to the air supply port at the end opposite to the path branch 121 connected to the main pipeline 110. The air device is large and heavy and cannot be moved easily, and the air supply port is fixed in position. Therefore, in order to connect the end of the inverted U-shaped piping passage to the air supply port, it is necessary to manufacture an accurate inverted U-shaped piping passage and accurately guide the end portion to the air supply port.

In the inverted U-shaped pipe line 822 of the conventional steel pipe screw fastening structure, it is difficult to adjust the screw fastening amount and determine the angle, so unless a highly technical function is used, an accurate inverted U-shaped pipe line 822 is manufactured and air Delivery to the supply port was difficult. For example, even if there is a displacement of several millimeters due to incorrectly adjusted screw-in amount, it is necessary to redo the manufacturing or delivery work of the inverted U-shaped pipeline. However, in the inverted U-shaped piping path by the fit-in structure, it is easy to manufacture and easy to deliver the end.

In addition, according to the inverted U-shaped pipelines 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 manufacturing the child piping 122 and leading the end of the inverted U-shaped piping to the air supply port of the air device (e.g., adjusting the angle 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
102B: branch flow
103: elbow
110: weekly pipeline
120, 220: air outlet
121: path branching
122, 222: inverted U-shaped pipeline
122a, 222a: first vertical pipe
122b, 222b: first path changing unit
122c, 222c: horizontal piping
122d, 222d: second path changing unit
122e, 222e: second vertical pipe

Claims (10)

delete delete delete A main pipeline extending in the first horizontal direction and supplying compressed air;
An air outlet for taking out compressed air from the main piping
As an air piping system provided,
The air outlet is
A path branching part installed on a path in the middle of the main pipeline and branching the path upward from the first horizontal direction;
A first vertical pipe part connected to the path branching part and extending upward to form a path in the vertical direction;
A first path changing unit for changing a path from the terminal end of the first vertical pipe part to a second horizontal direction intersecting the first horizontal direction;
A horizontal pipe part extending in a second horizontal direction from the first path changing part to form a path in the second horizontal direction;
A second path changing unit for changing a path downward from the end of the horizontal pipe unit;
A second vertical pipe part extending downward from the second path changing part to form a path in the vertical direction.
equipped,
The air piping system in which the path branching part is connected to the first vertical pipe part by a fitting structure.
According to claim 4,
The air piping system of claim 1 , wherein the first path changing unit is connected to the first vertical piping unit and the horizontal piping unit by a fitting structure.
According to claim 4 or 5,
The air piping system of claim 1 , wherein the second path changing unit is connected to the horizontal piping unit and the second vertical piping unit by a fit-in structure.
According to claim 4,
An air piping system in which at least either one of the first and second route change parts is formed by bending a pipe.
According to any one of claims 4, 5, and 7,
The air piping system of claim 1 , wherein the inverted U-shaped piping path connects an end portion opposite to the path branching portion to an air supply port having a fixed position.
As a construction method of an air piping system for supplying compressed air,
A first step of forming a path branching part for branching upward in a main piping line extending in a first horizontal direction and forming a path for compressed air;
A first vertical pipe part extending upward, a first path changing part for changing a path from the end of the first vertical pipe part to a second horizontal direction orthogonal to the first horizontal direction, and a second horizontal pipe from the first path changing part. A horizontal pipe part extending in the direction, a second path changing part changing a path downward from the end of the horizontal pipe part, and a second vertical pipe extending downward beyond the horizontal position of the main pipe from the second path changing part. A second step of manufacturing an inverted U-shaped piping passage composed of sections;
A third step of connecting the first end of the first vertical pipe of the inverted U-shaped pipe to the branching part of the path;
include,
The construction method of the air piping system in which the first vertical pipe part is connected to the path branch part by an inserting structure.
According to claim 9,
In the first step,
A first step of cutting the main pipeline;
A second step of coupling the cut end of the main pipe line to each of the primary and secondary side connectors through a first horizontal direction of the branching part between the cut main pipe line by a fitting structure. second
Construction method of the air piping system including.