KR100710855B1 - Duct using Synthetic resin Plate - Google Patents

Abstract

There is provided a duct structure using a synthetic resin plate which is easily deformed and has excellent strength.

The duct structure includes a plate body 10 formed of synthetic resin and easy to deform in shape and a structure formed by including strength reinforcing means incorporated in the plate body 10 to increase the strength of the plate body 10 The synthetic resin plate 1, which is easy to deform and has high strength, is made up of the duct body 110, and is configured such that the fluid can flow in the sealed state.

According to the present invention, it is possible to use as a duct structure made of polyethylene (PE) which has a strong corrosion resistance and chemical resistance but can not be used because of its weak strength, so that harmful gas or waste water treatment can be safely performed, It is possible to obtain an improved effect of reducing the overall manufacturing cost and facilitating the fabrication thereof.

Chemical resistance, corrosion resistance, polyethylene, synthetic resin plate, duct structure, wall

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a duct structure using a synthetic resin plate,

FIG. 1 is a view showing a synthetic resin plate which is easily deformed and has excellent strength according to the present invention,

(a) is a perspective view showing that a twist net is used as a plate strength strengthening means

(b) is a perspective view showing that a lattice network is used as a plate strength strengthening means

Fig. 2 shows another synthetic resin plate of the present invention using the plate strength strengthening means different from that of Fig. 1,

(a) is a perspective view showing a state in which the bar strength reinforcing means arranged in the longitudinal direction of the synthetic resin plate is used

(b) is a perspective view showing a state in which the bar strength reinforcing means arranged in the width direction of the synthetic resin plate is used

Fig. 3 shows another synthetic resin plate of the present invention using the plate reinforcement means of Figs. 1 and 2,

(a) is a perspective view showing a state in which the rod-shaped strength reinforcing means arranged in the longitudinal direction of the synthetic resin plate is used

(b) is a perspective view showing a state in which the rod-shaped strength reinforcing means arranged in the width direction of the synthetic resin plate is used

4 is a cross-sectional view showing the internal state of the plate strength reinforcing means in the synthetic resin plate of the present invention

FIG. 5 is a side view showing a supplementary member provided at a cutting site of a synthetic resin plate according to the present invention,

(a) is a perspective view showing a rounded additional member

(b) is a perspective view showing a rod-

(c) is a perspective view showing a rounded cover-

(d) is a perspective view showing the rod cover-

6 is a schematic view showing an operation state in which the overlapping member of FIG. 5 is fused together by using hot gas;

FIG. 7 illustrates a rectangular duct in a duct structure using a synthetic resin plate having a high strength and easy to deform in accordance with the present invention,

(a) is a perspective view

(b) is a schematic plan view showing the fusion state of the overlapping member

(c) is a perspective view showing an additional use state of the flange portion

(d) is a perspective view showing a sealing structure of the flange portion

(e) is a perspective view showing the sealing structure of the added flange portion

Figure 8 illustrates another embodiment of the square duct of Figure 7 according to the present invention,

(a) is a schematic view showing an inner overlapping form

(b) is a schematic view showing a staggered stacked form

(c) is a structural diagram showing the structure of a large duct structure

9 shows another embodiment in which the duct strength of the rectangular duct is further reinforced in the duct structure of the present invention,

(a) is a structural view showing that a duct is formed in a concavo-convex shape

(b) is a schematic view showing that at least one surface of the duct is formed in a concavo-convex shape

10 shows a circular duct of a duct structure using a synthetic resin plate which is easily deformed and has excellent strength according to the present invention,

(a) is a perspective view

(b) is a schematic plan view showing the fusion state of the overlapping member

(c) is a perspective view showing the sealing structure of the flange portion

(d) is a perspective view showing the sealing structure of the added flange portion

Figure 11 illustrates another embodiment of the circular duct of Figure 8 according to the present invention,

(a) is a schematic view showing an inner overlapping form

(b) is a schematic view showing a staggered stacked form

(c) is a structural diagram showing a circular duct using the elastic force of the duct

(d) is a structural view showing that an arc-shaped duct structure is formed by using one duct body 110

12 shows another embodiment of the duct structure according to the present invention,

(a) is a perspective view showing a triangular duct,

(b) is a perspective view showing a rectangular duct

13 is a perspective view of a large-sized duct structure using ducts according to the present invention,

FIG. 14 shows a semi-transparent roof structure as an example of a wall using a synthetic resin plate having a high strength and easy to deform in accordance with the present invention,

(a) is a perspective view

(b) is a perspective view showing the installation state of the semi-

15 is a perspective view showing a curved roof structure as another embodiment of the wall according to the present invention.

16 is a perspective view illustrating a sound barrier structure according to another embodiment of the present invention using a synthetic resin plate having good strength and shape,

(a) is a perspective view

(b) is a perspective view showing another noise-canceling structure of Fig. 16 (a) in which a sound-

17 is a view showing a water treatment wall having improved durability as another embodiment of a wall using a synthetic resin plate which is easily deformed according to the present invention and has excellent strength,

(a) is a perspective view showing a state in which a synthetic resin plate is formed in a concavo-convex shape and a reinforcing plate made of a synthetic resin plate is attached to both sides

(b) is a perspective view showing another example in which another reinforcing plate is attached to the concave-convex wall of the water treatment wall of Fig. 17 (a)

(c) is a perspective view showing another example in which a synthetic resin plate is attached to one side or both sides of the water treatment wall of Fig. 17 (b)

(d) is a perspective view showing another example in which a wall of a concavo-convex shape is double-structured and a synthetic resin plate is attached to one side or both sides thereof,

Description of the Related Art [0002]

1 .... synthetic resin plate 10 .... plate body

30a, b, c, d .... strength reinforcing means 50, 150 .... overlap member

100 .... duct structure 110 .... duct body

130, 130a .... body coupling portion 200a .... wall of the roof structure

200b .... wall of the noise barrier plate 200c .... water barrier wall

The present invention relates to a duct structure using a synthetic resin plate which is easily deformed in shape and has excellent strength, and more specifically, it can be used as a duct structure made of polyethylene (PE), which is resistant to corrosion and chemical resistance but weak in strength , It is possible to safely perform hazardous gas and wastewater treatment, and in particular, it is excellent in strength even when it is made of synthetic resin, so that it is possible to reduce the thickness, thereby reducing the overall manufacturing cost, The present invention relates to a duct structure using a plate.

In recent years, the use of electronic products has rapidly increased due to the development of electromagnetic devices. In response to this, the use of electronic components has increased rapidly. For example, when manufacturing semiconductor parts and various types of PCBs, A harmful gas is generated in various manufacturing processes such as an etching process for implementing a process and a circuit, and since such a harmful gas has a strong corrosiveness and chemical resistance, it can not be processed by using an ordinary steel pipe and is excellent in corrosion resistance and chemical resistance And has been processed through a duct structure made of synthetic resin.

In addition, wastewater treatment is an important concern due to the concentration of attention on environmental problems. Waste water discharged from chemical plants or electronic parts factories in wastewater contains a large amount of harmful chemicals. Therefore, when treating such wastewater, corrosion resistance and chemical resistance A processing tube or a water tank made of excellent synthetic resin is used.

However, considering only the corrosion resistance and chemical resistance to be used for such harmful gas or wastewater treatment, the most suitable resin material among the synthetic resins is polyethylene (hereinafter referred to as "PE"), but the PE is a duct structure or a wall Since the strength is too weak, it has to be manufactured by increasing the thickness to a considerable extent in terms of cost and manufacturing.

Recently, the use of fiber reinforced plastics (hereinafter abbreviated as 'FRP') has been rapidly increasing. Such FRPs have lower corrosion resistance and chemical resistance than PE, but they have a mechanical strength Since the strength is higher than that of PE, it is to be used as a duct structure or a wall in the above-mentioned harmful gas or wastewater treatment.

However, although the strength of the FRP is improved, it is required to maintain a thickness of more than a certain level by incorporating fiber, for example, glass fiber, in the synthetic resin. For example, when a duct structure or a wall is made of PE, If it is made to a thickness of 40-50 mm, the thickness of the FRP may be reduced to about 10 mm, but it is still thick, resulting in cost and manufacturing problems.

Therefore, a reinforcing means for enhancing the strength of the plate inside the synthetic resin plate, particularly the PE having the best corrosion resistance and chemical resistance, is built in the duct structure or the wall used for treating the harmful gas or the wastewater with the PE plate material Is preferable in terms of corrosion resistance, chemical resistance and strength, and strength is maintained. Therefore, it is more preferable that the thickness is reduced rather than using FRP, and thus it is useful for cost and production. Structures, walls and the like have been required.

In addition, the wall can be used as a roof structure, a sound barrier plate, or a water treatment wall because it is preferable if all of the structures are required to have strength while maintaining corrosion resistance.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a duct structure which is easy to manufacture a duct structure for treating harmful gas or wastewater, has excellent strength and long service life, And to provide a duct structure using a synthetic resin plate which is easy to deform and has excellent strength.

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Technical Solution [10] In order to achieve the above object, the present invention provides a method of manufacturing a steel plate comprising a plate body formed of synthetic resin and easy to deform in shape, and a strength reinforcing means incorporated in the plate body to increase the strength of the plate body The present invention provides a duct structure using a synthetic resin plate which is easily deformed and has a high strength and which is made of a duct body and which is easily deformed in shape to allow a fluid to flow in a closed state.

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Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 show a synthetic resin plate 1 which is easily deformed and has excellent strength according to the present invention. The synthetic resin plate 1 of the present invention is formed largely of synthetic resin and easy to bend A plate body 10 and strength reinforcing means incorporated in the plate body 10 to increase the strength of the plate body 10. [

At this time, although the plate body 10 of the synthetic resin plate 1 is schematically shown in the figure, the two reinforcing synthetic resin sheets 10a on the upper and lower sides of the strength reinforcing means, which will be described in detail later, Or by integrally joining them in a fused form while passing through a heated down roll.

Alternatively, the plate body 10 may be formed by applying a synthetic resin solution to both side surfaces of the strength enhancing means immediately after the production step without using a synthetic resin sheet, and molding the plate body 10 and the strength reinforcing means Can be integrally combined.

In this case, it is important that the synthetic resin plate body 10 is made of PE, which is disadvantageous in that the PE is excellent in corrosion resistance and durability, Since the strength reinforcing means is built in, it is possible to solve the problem of strength which is a problem when using PE.

1A, the strength reinforcing means may include various types of materials. For example, as shown in FIG. 1A, the strength reinforcing means may include a twist net 30a (not shown) for reinforcing the strength of the plate body 10, ).

Alternatively, as shown in FIG. 1B, the strength enhancing means may be a lattice net 30b incorporated in the plate body 10 to increase the strength of the plate body 10.

In this case, the twisted net or lattice net may be of a wire net type commonly used, for example, a synthetic resin such as a hard plastic may be used, and the twisted net or lattice net 30a 30b are used, there is no fear of corrosion such as a metallic material even when the thickness of the synthetic resin body 10 is not normal, so that it is more difficult to manufacture, but more preferable.

Since the strength reinforcing means made of the twist net 30a or the mesh net 30b provides a certain strength maintaining strength with respect to the bending direction of the synthetic resin plate 1, It would be convenient to construct the duct structure or wall described below.

As shown in FIG. 2, the strength reinforcing means may be constituted by a rod structural body 30c which is embedded in the plate body 10 and increases the strength of the plate body 10. [0040] As shown in FIG.

As shown in FIG. 3, the strength reinforcing means may be formed of a bar structure 30d which is embedded in the plate body 10 to increase the strength of the plate body 10.

2 and 3, the rod reinforcing member 30c or the rod reinforcing member 30d may be reinforced by a steel bar, iron rod or a hard synthetic resin, for example, a bendable rigid plastic or the like In the case of iron (metal), it is easy to purchase. On the other hand, in the case of synthetic resin, it is difficult to manufacture or purchase separately. However, since there is no corrosiveness of itself, the duct structure using the synthetic resin plate 1 It is more preferable in terms of corrosion resistance when the wall is used.

Importantly, in the case of using the reinforcing means of the bar structure 30c or the bar structure 30d, the plate body 10 of the synthetic resin plate 1 is bent in the direction of bending the plate body 10 And arranging them at regular intervals.

2 and 3, when the synthetic resin plate 1 is made of a duct structure or a wall, the strength reinforcing means must be disposed at a right angle to the bending direction of the synthetic resin plate 1, Strength can be maintained.

4 shows the internal state of the strength reinforcing means 30a-d incorporated in the synthetic resin plate 1 of the present invention. The strength reinforcing means is a means for reinforcing the strength of the plate body 10, that is, the PE sheet, It is important that the heat seal or the PE liquid is completely covered with the molded PE plate body 10 so that the end portion e is not exposed to the outside.

This is because, when the strength enhancing means is made of metal (iron), it is corroded when it is exposed to the outside, and it is not beautiful from the outside.

Next, FIG. 5 shows additional members for preventing the strength reinforcing means from being exposed to the outside and being corroded on the cut portion when the synthetic resin plate 1 is cut and used according to necessity during use of the synthetic resin plate 1 of the present invention .

That is, as shown in FIG. 5, the overlapping member is fusion-bonded to the cut portion when cutting the plate body 10 having the strength-compensating means therein.

5A and 5B, the overlapping member may be formed of a round shape 50a having a circular shape on one side or a round cover shape 50b on which the plate body 10 is partially inserted and covered 5D and 5D, the overlapping member may be composed of a rod-like cover 50d in which a rod 50c or the plate body 10 is partially inserted and covered.

At this time, since the round cover type or the rod cover type 50b or 50d is provided to completely cover the strength reinforcing means, it is more preferable in terms of prevention of corrosion although there is difficulty in manufacturing on the side of shielding from the outside .

6 shows an operation of fusing and joining the overlapping members 50a-d of the present invention described in FIG. 5 to the plate body 10 of the synthetic resin plate 1 of the present invention. Hot- Gas generator H and the overlapping members are brought into close contact with the plate body 10 through the jig in a state in which the overlapping members are provided in the form of rolls, So as to be coupled to the plate body 10.

7, 10 and 12 show various embodiments of the duct structure 100 according to the present invention using the synthetic resin plate 1 which is easy to deform in the present invention.

That is, the duct structure 100 using the synthetic resin plate 1 of the present invention is constructed by bending one of the synthetic resin plates 1 of the present invention shown in Figs. 1 to 3, A duct body 110 for allowing the duct body 110 to flow in a hermetically sealed state and at least one or more body coupling parts provided integrally with the duct body 110. [

Meanwhile, in the duct structure 100 of the present invention, the duct body 110 can be used by bending the synthetic resin plate 1 described above. At this time, as described above, the synthetic resin uses a PE having excellent corrosion resistance and chemical resistance do.

In this case, the duct body 110 is formed by joining the flange portions 130 by heat fusion to each other, while the body coupling portion is composed of the flange portion 130 bent in the longitudinal direction of the duct body 110. In this case, As shown in Fig. 7B, the overlapping member 150 as shown in Fig. 5 is fused to complete the duct structure.

Therefore, the fluid flowing inside the duct structure 100, that is, the harmful gas, the wastewater, etc., stably flows through the duct structure 100.

7C, the body coupling portion includes a flange portion 130 bent in the longitudinal direction of the duct body 110, and a flange portion 130 coupled to the front and rear sides of the duct body 110 and connected to each other. And a branch 130a.

Accordingly, in this case, the duct body 110 may be continuously connected as the longitudinal flange 130 and the front and rear end flange portions 130a to provide a single duct structure.

7D and 7C, in the duct structure 100 of the present invention, the body coupling portion includes a seal foam 170 for sealing a fluid flowing therein, that is, a synthetic foam foam The sealing foam 170 may be coupled to the body coupling portion, that is, the body coupling portion of the flange 130 and the end flange 130a, When the foam 170 is used, the fluid can be flowed in a sealed state rather than the case where the internal fluid is a noxious gas, thereby enhancing the sealing property. The sealing foam may use the glass fiber having a long lifetime instead.

At this time, the sealing part 170 and the body coupling parts 130 and 130a of the duct body 110 are integrally joined to each other through a sealing foam, or they are connected to each other through separate bolts and nuts 190 (192) Particularly, it can be combined with a bolt made of a synthetic resin and a nut such as a nut.

However, when the sealing foam 170 is not used, the body coupling parts 130 and 130a of the duct body 110 can be integrally thermally fused to each other.

As shown in FIG. 7, the duct structure 100 of the present invention may be formed such that a pair of duct bodies 110 are mutually coupled to each other to form a rectangular cross section. Alternatively, as shown in FIG. 8, The duct body 110 may be correspondingly coupled or one duct body 110 may be fitted to the other duct body 110 or the pair of duct bodies 110 may be staggeredly arranged.

8A and 8B, the duct body 110 may be integrally formed with the protrusions 112 serving as stoppers for supporting the end portions of the duct bodies when the duct bodies are assembled.

Next, as shown in FIG. 8C, the rectangular duct structure may be formed of a large rectangular duct by integrally connecting the plurality of bent duct bodies 110 'through the body coupling portion 130' In this case, it is more preferable to apply the present invention to a large-capacity duct structure having a large amount of harmful gas or wastewater to be treated.

Next, as shown in FIG. 9, the rectangular duct structure 100 may be configured such that at least one surface of the duct body 110 is formed in a concavo-convex shape to increase the strength of the additional duct.

That is, since the duct body 110 of the present invention shown in FIG. 9 has a concavo-convex shape, the strength of the duct body 110 is increased accordingly.

10 to 11, the duct structure 100 of the present invention is constructed such that a pair of duct bodies 110 are coupled to each other to have an arc-shaped cross section.

10, the duct body 110 of the arc-shaped duct structure is coupled with the body coupling portion 130, which is a flange in the longitudinal direction of the body, and the body coupling portion 130a of another end flange, And it may be possible to join them using a sealing member or a bolt-nut coupling member through the sealing foam 170.

11A and 11B, as in the duct structure 100 of FIG. 7, the arc-shaped duct structure 100 is also connected to a pair of duct bodies 110 correspondingly or to a single duct body 110 may be fitted into the other duct body 110b or the pair of duct bodies 110 may be staggeredly arranged.

At this time, it is also possible to form the protruding portions 112 serving as a stopper on the duct body 110.

Further, as shown in Fig. 11C, one of the half-shell duct bodies 110 is made smaller and the other one is used in a larger size, and a supporting end 114, And the supporting end 114 may be elastically fastened and assembled according to the repulsive force of the arc-shaped duct body 110 by interposing a sealing foam 170 which is in close contact with each other.

As shown in FIG. 11D, an arc-shaped duct structure 100 may be used in which one duct body 110 is rolled and its end portion is joined by fusing or the like, and the additional member 150 is welded and sealed to seal In this case, the manufacturing process will be simpler than using the half body type duct bodies.

12, another example of the duct structure 100 of the present invention is shown. That is, as shown in FIG. 12A, a pair of duct bodies 110 having a triangular shape in cross section are coupled to each other to form a rectangular duct as a whole Alternatively, as shown in FIG. 12B, a pair of duct bodies 110 having a polygonal cross section may be coupled to each other to form a multiple duct.

Therefore, the triangular or polygonal duct structure 100 is more resistant to external shocks than square or arcuate shapes, which is difficult to make, but will increase the strength.

Next, FIG. 13 shows another embodiment of the duct structure of the present invention. For example, the arc-shaped duct structure 100 of FIG. 10 is connected vertically to constitute a large duct structure, that is, a stack structure 100 ' In this case, it is possible to treat harmful gas generated in large quantities in a large electronic parts manufacturing factory. Of course, the arc duct structure is shown in the drawing, but it is possible to mix various types of duct structures described above, There is no difficulty in constructing the stack structure, and it is also possible to construct another duct structure which is inclined at a portion where the diameter is reduced.

Next, Figs. 14 to 17 show the roof structure 200a of the wall using the synthetic resin plate 1 having the excellent strength and ease of deforming the shape of the present invention.

That is, as shown in FIGS. 14 and 15, the synthetic resin plate 1 of the present invention can be bent to form the roof structure 200a of the wall. Such a roof structure 200a of the present invention can prevent sunlight Since the synthetic resin plate 1 made of semitransparent PE which is semi-permeable is bent and used, it can be used variously in gymnasiums, single-family houses, restaurants, and the like.

At this time, the roof structure 200a of the wall of the present invention may be constituted by a concave-convex roof structure as shown in FIG. 14A or a curved roof structure as shown in FIG. 14B.

As shown in FIG. 14B, in the case of the uneven roof structure, an overlapping portion 200a 'that overlaps the both ends is formed and fixed to the structure 210 of the building itself, for example, an H- can do.

Next, FIG. 16 shows a noise barrier plate 200b in a wall using the synthetic resin plate 1 of the present invention.

That is, as shown in FIG. 16A, it may be constituted by a noise shielding plate 200b which is normally fitted to a vertical supporting stand 220 next to the highway.

In addition, the noise-isolating plate 200b may be constructed of a noise-isolating plate 200b of a type in which a pair of synthetic resin plates 1 having concave and convex shapes are coupled to each other to form a sound-absorbing space 230 therein And the noise shielding plate 200b having such a sound absorbing space 230 has an excellent noise shielding property.

In addition, since the noise barrier plate 200b of the present invention is made of a synthetic resin, it is not corroded, and the sunlight is semi-transparent as a translucent body, so that the appearance is also good.

Next, FIG. 17 shows a wastewater treatment wall 200c which can be used as a wall of a wastewater treatment tank or a barrier wall for controlling the flow of wastewater in a wall using a synthetic resin plate which is easily deformed and has high strength, according to the present invention.

That is, as shown in Fig. 17A, the synthetic resin plate 1 of the present invention is formed into a concavo-convex shape to form a body portion 200c1 having increased strength, and on both sides thereof, a reinforcing plate The reinforcing plate 200c2 may be integrally welded (welded) to both sides of the concave-convex body 200c1, for example, by attaching the reinforcing plate 200c2 to the wall of the water tank for treating wastewater or the partition wall of the water treatment facility To maintain the strength of the body portion and to withstand the water pressure and the like. In this case, in the case of the partition wall, holes through which water can flow may be formed.

Therefore, the water treatment wall 200c of the present invention shown in Fig. 17A is excellent in corrosion resistance and is reinforced in strength, so that the strength will be maintained when it is manufactured and used in a water tank or the like.

17B, another reinforcement plate 200c3, that is, a reinforcement plate made of a synthetic resin plate 1, is attached to the wall 200c of Fig. 17A by fusion of the inner surface of the concave-convex body 200c1, The other water treatment walls 200c can be used to further improve the strength of the walls of Fig. 17A.

Therefore, the water treatment wall body 200c shown in Fig. 17B is made of a synthetic resin plate and has no corrosion while further improving the strength.

Next, in Fig. 17C, a water-proofing wall 200c4 made of the synthetic resin plate 1 of the present invention which is not bent in a concave-convex shape in front of, or in front of, or behind, the concave-convex body 200c1 of the water- A wall for water treatment 200c having a large water pressure and a large water-holding capacity, for example, is shown.

Therefore, the wall 200c shown in Fig. 17C is used for water treatment for wastewater treatment, and the water reservoir wall 200c4, which is a synthetic resin plate for the water tank wall, is further reinforced on the front, front and rear sides of the concavo-convex body 200c1, The strength of the wall 200c will be improved.

17D shows another example of the water treatment wall 200c. The body portion 200c1 of FIG. 17A, which is formed by bending the synthetic resin plate 1 of the present invention and formed in a concavo-convex shape, And a water reservoir wall 200c4 made of a synthetic resin plate 1 is coupled to the front, the front, and the rear.

Therefore, the wall 200c of FIG. 17D is obtained by multiplying the concave-convex body portion 200c1 without using the reinforcing plates 200c2 and 200c3 of FIGS. 17a and 17b to increase the strength.

Accordingly, the various types of water treatment walls 200c shown in Fig. 17 are formed by deforming the shape of the synthetic resin plate 1 of the present invention as described above and increasing the strength by reinforcing plates or multiple joints, And provides strength and corrosion resistance to water treatment tanks that retain strength without corrosion and provide a number of advantages when used as bulkheads to control the flow of water.

At this time, though not shown in the drawing, it is of course possible to fabricate a plurality of synthetic resin plates (1) by a wall body (200c) for water treatment of a simple structure or water treatment of a partition wall. In this case, it is suitable for a small water treatment tank will be.

As described above, according to the duct structure of the present invention, the duct structure using the synthetic resin plate which is easy to shape and has high strength is provided with the strength reinforcing means to reduce the thickness, which is useful in terms of cost and production, It is possible to easily produce a duct structure for treating harmful gases and wastewater, and it has a long strength and a long service life. In particular, it provides an effect of reducing manufacturing cost will be.

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Although the present invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the spirit or scope of the invention as set forth in the following claims It will be appreciated that those skilled in the art will readily be able to ascertain the present invention.

Claims (46)

delete delete delete delete delete delete delete delete delete delete delete delete A plate body 10 formed of a synthetic resin and easy to deform in shape and a strength reinforcing means incorporated in the plate body 10 to increase the strength of the plate body 10, Is made of a duct body (110), and the duct structure (1) is made of a synthetic resin plate which is easily deformed in shape and capable of flowing in a sealed state, 14. The duct structure according to claim 13, wherein the duct body (110) includes at least one body coupling part 14. The duct structure according to claim 13, wherein the synthetic resin is made of polyethylene (PE) having excellent corrosion resistance and chemical resistance. 15. The duct structure according to claim 14, wherein the body coupling part comprises a flange part (130) bent in the longitudinal direction of the duct body (110) The duct body (110) according to claim 16, wherein the flange portions (130) are coupled to each other to form a duct, and between the front and rear sides of the duct bodies (110) And the duct structure constitutes a closed structure of the structure 15. The duct according to claim 14, wherein the body coupling part comprises: a flange part formed by being bent in a longitudinal direction of the duct body; a longitudinal flange part coupled to the front and rear sides of the duct body, The duct structure according to claim 1, 19. The duct structure according to claim 16 or 18, wherein the flange part (130) of the body coupling part and the end flange part (130a) are welded to each other to form a closed structure of the duct The duct structure according to claim 16 or 18, wherein the body coupling portion is further coupled with a seal foam (170) for preventing external leakage of fluid flowing in the body coupling portion. 21. The duct structure according to claim 20, wherein the body coupling part is coupled through a sealing foam or through a separate coupling hole, 14. The duct structure according to claim 13, wherein a pair of duct bodies (110) are mutually coupled to form a rectangular duct The duct according to claim 22, wherein the rectangular duct is formed by a pair of duct bodies (110) corresponding to each other, one duct body (110) fitted to another duct body (110), or a pair of duct bodies And the duct structure 23. The duct structure according to claim 22, wherein the rectangular duct structure is configured such that at least one surface of the duct body (110) is formed in a concavo-convex shape to increase the strength of additional duct The duct structure according to claim 22, wherein the rectangular duct structure is formed by connecting a plurality of bent duct bodies (110 ') integrally through a body coupling part (130'). 14. The duct structure according to claim 13, wherein a pair of duct bodies (110) are coupled to each other to form a pipe-like duct having a circular section 27. The duct according to claim 26, wherein the circular pipe-type duct comprises a pair of duct bodies (110) coupled to each other, one duct body (110) fitted to the other duct body (110) Are arranged in a staggered arrangement. 27. The duct structure according to claim 26, wherein the circular pipe-shaped duct is formed by winding one duct body (110) 14. The duct structure according to claim 13, wherein a pair of duct bodies (110) having a triangular cross section are mutually coupled to form a rectangular duct as a whole 14. The duct structure according to claim 13, wherein a pair of duct bodies (110) having a polygonal cross section are mutually coupled to form a multi-duct duct as a whole The duct structure according to claim 13, wherein a plurality of duct structures are connected to form a large duct structure (100 '). delete delete delete delete delete delete delete delete delete delete delete delete The plate body (10) according to claim 13, wherein the plate body (10) is integrally joined with the synthetic resin sheet in the upper and lower sides with the strength reinforcing means in the center by press-fitting or fusion bonding, or the both surfaces of the strength reinforcing means And the duct structure is formed integrally with the duct structure 45. The method of manufacturing a steel plate according to any one of claims 13 and 44, wherein the strength reinforcing means comprises a twist net 30a, a grid net 30b, a bar structure, and the like, which are embedded in the plate body 10 to increase the strength of the plate body 10 And a rod structure (30d). The duct structure (30d) is made of one of a metal material and a synthetic resin. 46. The apparatus of claim 45, wherein the strength enhancing means is disposed in the plate body at equal intervals corresponding to the direction in which the plate bodies (10) are bent, and wherein the strength enhancing means And an additional member is further coupled to the cut portion so as to prevent external exposure of the strength enhancing means when the plate body (10) having the strength compensating means is cut.

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