KR101077041B1 - Protecting screen of diffuser in reaction vessel - Google Patents

Abstract

The present invention includes a plurality of pallet support parts 10 including a support 11 coupled with an upper support plate 12a and a lower support plate 12b having fastening holes 41 at upper and lower ends thereof; A plurality of pieces are combined to form a lattice-shaped frame such that a plurality of pallets 30 seating spaces are provided therein, but a seating surface 21 is provided so that the pallets 30 are seated, and bottom surfaces of the plurality of upper support plates 12a. Flat bar 20 is coupled to the top surface of the; And a pallet 30 seated on the seating surface 21 provided in the flat bar 20 and having a plurality of voids 31 formed therein. According to the present invention, it is installed on the front of the reaction tank diffuser and protects the fluidized media and the fluidized media during the impact of the reaction tank, the installation and disassembly of the pallet is easy to maintain, the pallet (pallet) It is firmly supported by a flat bar and a column, so that there is little deflection even under high load, and thus, it is possible to provide a screen for protecting the reactor's engine, which is very stable and light in its own weight, thereby ensuring convenience during maintenance.

Description

Protective Screen Of Diffuser In Reaction Vessel

The present invention is installed on the front of the reaction tank diffuser tube to protect the fluidized bed medium and the fluidized bed medium during the impact of the reaction tank, the installation and disassembly of the screen is easy to maintain, the pallet is a flat bar It is firmly supported by a flat bar and a pillar, and it is very stable and has a light weight of its own.

In recent years, as the use of chemicals increases due to industrialization and urbanization, emissions of nutrients such as nitrogen and phosphorus increase rapidly, and the water environment of coastal and lakes is severely polluted. Various advanced treatment methods have been developed.

The advanced treatment method uses a diffuser as a device for purifying sewage by supplying oxygen to the sewage, which includes a membrane diffuser, a rod-shaped membrane diffuser, and a disc-shaped membrane diffuser.

Here, the membrane diffuser is perforated with a micro diffuser in the soft membrane, and the oxygen transfer rate of the diffuser is the highest.

However, because the membrane diffuser has a structure in which the elastic membrane repeats expansion and contraction, the endurance life is shortened due to the fatigue load, and the soft EPDM membrane having low impact resistance and abrasion resistance may wear out due to collision with the flowing carrier when the fluid carrier is filled In addition, in the rod-type membrane diffuser, bubbles rise along the surface of the rod even at the bottom of the rod, thereby increasing the frequency at which the bubbles can collide with each other and coalescing into a large bubble to collide with each other. This can be degraded.

In addition, the disk-type membrane diffuser does not coalesce bubbles and has an excellent oxygen transfer rate. However, the EPDM disc is fixed on the disk-shaped board with a high and outer frame, but the outer frame and the lower board are fixed with each other by screw type or assembled using bolts and nuts. You can't do it and you can come loose.

The screen is coupled to the upper part of the diffuser of the same type, but in the past, since the structure of the pallet was plate-shaped, the pallet could not be overcome and the pallet could be damaged and the media could be damaged.

In addition, the screen is combined with the upper part of the diffuser of the same type, but conventionally, the screen material is INJECTION GRATING (thermoplastic), MOLDED FRP GRATING, and PULTRUSION FRP GRATING, which is a non-metal material, and EXPENDED METAL GRATING, which is a metal material, PUNCHING PLATE GRATING and STEEL GRATING were used.

However, the materials used in the prior art had the following problems.

First, INJECTION GRATING, which is a non-metallic material, has a disadvantage of high mold cost, and MOLDED FRP GRATING becomes an industrial waste at the end of durable construction, and because it is purely manual work, product quality is uneven, the production period is long, and the price is expensive. When the glass fiber content is low, the strength is lowered, a separate outer frame is required, and the upper surface area is wider, which may cause a problem in fluid flow. PULTRUSION FRP GRATING is expensive, and after assembly, Since the attaching process is performed manually, the manufacturing period takes a long time, the product is somewhat uneven, a separate outer frame is required, and the upper surface area is wide, which may cause a problem in the fluid flow.

In addition, EXPENDED METAL GRATING, which is a metal material, requires a separate outer frame, needs reinforcement due to deflection, and has a disadvantage that it may cause a problem in fluid flow due to its wide top surface area. This is possible, but the price is expensive, and the product with large specifications cannot be manufactured, and a separate frame is required, and the upper surface area has a disadvantage that may cause the flow of the fluid, and the steel grading is customizable, but the weight It is heavy, so it is difficult to perform maintenance work, it requires a lot of materials and construction cost for the lower frame composition, is not suitable to use only the protection screen, and it is expensive.

Therefore, the conventional reactor control engine protection screen using the above materials had a problem that the weight is heavy, the strength is weak, the corrosion is good, the recycling is difficult, and the maintenance is difficult.

An object of the present invention devised to solve the above problems is easy to install and dismantle the screen, easy to maintain, pallet is firmly supported by a flat bar and a pillar high load Its purpose is to provide a reactor protector engine screen that ensures ease of maintenance due to its low stability and low weight.

In addition, another object of the present invention is similar in hardness to the fluidized bed media to prevent breakage of the fluidized bed media even during frequent contact, the pores of a sufficient width is formed on the pallet to enable smooth oxygen transfer, corrosion resistance (耐蝕Made of 20 parts by weight of PP-GF (polypropylene-Glass Fiber, glass fiber reinforced polypropylene), it is a lightweight, high-strength pallet that is uniform in product quality and recyclable. This is to provide an eco-friendly reactor control screen because it does not cause secondary environmental pollution even after the end of service life.

In addition, another object of the present invention is installed in the front of the upper part of the reaction tank is protected fluid medium and the fluid medium during the impact of the reaction medium, the reaction tank which can support and protect the working load during maintenance To provide a protective screen.

In order to achieve the above object, according to a preferred embodiment of the present invention, the present invention is the support 11 coupled to the upper support plate 12a and the lower support plate 12b having fastening holes 41 at the top and the bottom thereof. A plurality of pallet support 10 comprising a; A plurality of pieces are combined to form a lattice-shaped frame such that a plurality of pallets 30 seating spaces are provided therein, but a seating surface 21 is provided so that the pallets 30 are seated, and bottom surfaces of the plurality of upper support plates 12a. Flat bar 20 is coupled to the top surface of the; And a pallet 30 seated on the seating surface 21 provided on the flat bar 20 and having a plurality of voids 31 formed therein, wherein the plurality of pallet support parts 10 are pallets. It is characterized in that it is arranged at the lower end of the corner and the center of 30, respectively.

In addition, the pallet 30, the pair is arranged to the left and right, the bent portion is formed to be coupled to face each other, the fixing plate 40 is provided with a fastening hole 41 at the corner and the top of the center, respectively It is characterized by being fastened by the plurality of upper support plates (12a) and the fastening member.

In addition, the flat bar 20, the central portion 22 is projected, characterized in that to form a seating surface 21 to the left and right of the central portion (22).

In addition, a plurality of angles 50 are fastened to the wall surface W, and the upper surfaces of the angles 50 are welded to the lower surfaces of the ends of the plurality of flat bars 20, respectively.

According to the present invention as described above, the installation and disassembly of the screen is simple and easy to maintain, and the pallet is firmly supported by a flat bar and a column, so that there is little deflection even under high load. Stable, light weight of its own can provide a reactor screen protector screen to ensure convenience during maintenance.

In addition, according to the present invention, the hardness of the fluidized bed media is similar to prevent breakage of the fluidized bed media during frequent contact, and the pores having a sufficient width are formed on the pallet, so that smooth oxygen transfer is possible. Made of 20 parts by weight of PP-GF (polypropylene-Long Glass Fiber), this product is made of 20 parts by weight of lightweight, high-strength pallet, so that the product quality is uniform and recycled. Even after the expiration of the year, it is possible to provide an environmentally friendly reactor engine protection screen without causing secondary environmental pollution.

In addition, according to the present invention is installed on the front of the upper part of the reaction tank diffuser to protect the fluidized bed medium and the fluidized bed medium during the impact of the reaction tank, and the reaction tank protector screen that can support and protect the work load during maintenance Can provide.

1 is an overall perspective view of a reactor tank protector screen according to a preferred embodiment of the present invention,
Figure 2 is a perspective view showing the flat bar coupled to the pallet support in the reactor tank diffuser protection screen according to a preferred embodiment of the present invention,
3 is a partial perspective view of the pallet part of FIG. 1;
4 is a partial perspective view showing the pallet support portion of FIG.
5 is a partial cross-sectional view of FIG.
Figure 6 is an exemplary view showing a side of the pallet is supported on the wall in the reactor tank diffuser protective screen according to an embodiment of the present invention.
7 is a strength test of the reaction tank diffuser protection screen according to a preferred embodiment of the present invention tested at an operating load of 300kgf,
8 is a strength test of the reaction tank diffuser protection screen according to a preferred embodiment of the present invention tested at an operating load of 400kgf,
9 is a strength test of the reaction tank diffuser protection screen according to a preferred embodiment of the present invention tested at a working load of 500kgf.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings for describing a reactor tank protector screen according to embodiments of the present invention.

1 is a perspective view of the reaction tank diffuser protection screen according to a preferred embodiment of the present invention, Figure 2 is a perspective view showing that the flat bar is coupled to the pallet support in the reaction tank diffuser protection screen according to a preferred embodiment of the present invention, Figure 3 Is a partial perspective view of the pallet portion of FIG. 1, FIG. 4 is a partial perspective view of the pallet support portion portion of FIG. 1, and FIG. 5 is a partial sectional view of FIG.

Reactor tank diffuser screen 100 according to a preferred embodiment of the present invention includes a pallet support 10, a flat bar 20, a pallet (30).

As shown in FIG. 1, the pallet support part 10 includes a support 11 in which an upper support plate 12a and a lower support plate 12b are provided with fastening holes 41 at upper and lower ends thereof. .

At this time, the pallet support 10 is a stepped structure that is mounted on the top by the coupling member 13 is padded and welded between the upper support plate 12a and the support 11, and between the lower support plate 12b and the support 11, respectively. It can be supported.

In addition, it is preferable that the plurality of pallet support units 10 are disposed at the edges of the pallets 30 and the lower ends of the centers, respectively.

The pallet supporting part 10 disposed at the corner is vertically installed at the corner outer corner of the pallet 30 to support the pallet 30. For example, if the pallet 30 has a rectangular shape as shown in the drawing, It is installed vertically on each of the four nipples.

As shown in FIG. 1, the upper support plate 12a of the pallet support 21 is placed with the neighboring pallets 30 and the neighboring pallets 30 are fastened by a fastening member, in which the neighboring pallets 30 are connected. The connecting plate 45 may be padded on the upper surface thereof, and the U-shaped bolt 42 is fastened to the connecting plate 45 at the lower portion of the pallet 30 so as not to protrude upward from the connecting plate 45. It is desirable to.

In addition, the pallet support portion 10 disposed in the center serves to support the vertically installed in the center of the pallet 30, it is able to withstand the load to press the pallet 30 even if the fluidized media is placed. .

As shown in FIG. 2, a plurality of flat bars 20 are combined to form a lattice frame such that a plurality of pallets 30 seating spaces are provided therein, but a seating surface 21 is provided so that the pallets 30 are seated. The lower surface is coupled to the upper surface of the plurality of upper support plates 12a.

At this time, it is preferable that the long flat bar 20a and the short flat bar 20b are welded at the same height in order to form the lattice-shaped frame.

In addition, the bottom surface of the flat bar 20 is preferably welded and fixed to the top surface of the upper support plate (12a).

In this case, it is most preferable that the flat bar 20 is placed inside the fastening holes 41 provided on the upper surface of the upper support plate 12a so that the fastening hole 41 is not blocked.

1 to 2, the flat bar 20, the central portion 22 is projected, it is preferable to form a seating surface 21 to the left and right of the central portion (22).

In other words, the flat bar 20 is provided in a T-shape so that the edge of the pallet 30 is seated on the left and right seating surfaces 21.

Pallet 30 has a corner is seated on the seating surface 21 provided on the flat bar 20, a plurality of voids (31) are formed.

At this time, the size of the air gap 31 is most preferably 100mm long and 100mm long, but is not limited thereto.

In addition, the number of the voids 31 may be injection molded by adding or subtracting according to the mold size of the pallet 30.

As shown in Figure 3, the pallet 30, it is preferable that the bent portion is formed to be coupled so that the pair of side (30a, 30b) is arranged left and right to engage.

In addition, a separate fastening member may be fastened to more firmly couple the pair of pallets 30a and 30b.

At this time, the bent portion of the pair of pallets (30a, 30b) is formed in each of the fastening hole 41 is provided with a bolt 42 is fastened through the fastening hole 41, the pair of pallets (30a, 30b) ) Is firmly combined.

In addition, the pallet 30 is provided with a pair (30a, 30b) to be coupled to the left and right to form a single pallet 30, and is fastened during installation, it is possible to reduce the mold cost when manufacturing the pallet 30 The size is also cut in half, so it is designed to be easy to move during maintenance.

The pallet 30 has a fixing plate 40 and a central fixing plate 40 ′ having fastening holes 41 formed at edges and centers of the pallet 30, respectively, to be fastened with the plurality of pallet supporting units 10. It is fastened and fixed by a member.

At this time, in addition to the air gap 31 formed in the pallet 30 may be further provided with a fine air gap 32 in the corners and the center of the pallet 30, which is fixed to the top of the corner and the center plate 40 This is to fix the pallet 30 to the pallet support part 10 through the fastening hole 41 provided in the central fixing plate 40 '.

In detail, as shown in FIG. 5, the pallet 30 seated on the seating surface 21 of the flat bar 20 is disposed between the fixed plate 40 and the upper support plate 12a of the pallet support 10 and the fixed plate ( The bolt 42 is inserted from the fastening hole 41 provided in the 40 and penetrates the fastening hole 41 provided in the upper support plate 12a to cover the bottom of the upper support plate 12a, and then attach a washer 43 to the nut. The pallet 30 is firmly fixed by tightening (44).

In addition, by the above fastening method, the pallet 30 has a pair of pallets 30a and 30b formed by a central fixing plate 40 'and a pallet support part 10 which are placed above and below the pallet 30 at the center thereof. The more firmly coupled, the more the load that the pallet 30 can endure.

Pallet 30 is supported by a plurality of pallet support 10 and fixed by a fixed plate 40, the pallet 30 is made of a special material developed by the present inventors is designed to have excellent strength and good corrosion resistance .

The pallet 30 is preferably made of a material that bears a load of 300 to 500 kgf.

At this time, the pallet 30, including 20 parts by weight of PP-GF (polypropylene-glass fiber, glass fiber reinforced polypropylene), which is a corrosion-resistant material, per 100 parts by weight, the strength (strength) is reinforced and lightweight ( It is provided with a thing.

In addition, 15 parts by weight of PP-LGF (polypropylene-Long Glass Fiber, glass long fiber reinforced polypropylene) may be applied instead of PP-GF.

Figure 6 is an exemplary view showing the side of the pallet is supported on the wall in the reactor tank diffuser protective screen according to an embodiment of the present invention.

As shown in FIG. 6, a plurality of angles 50 are fastened to the wall surface W instead of the pallet support 10 to the wall surface W so that the top surface of the angle 50 is connected to the bottom surface of the flat bar 20. Welded and fixed.

Bolts that can be fastened to concrete, such as anchor bolts 52, are used to fasten the angle 50 to the wall surface W. The lower support plate 12b is attached to the lower support plate 12b in order to be fixed to the ground. It is preferable that the anchor bolt 52 is fastened by the provided fastening hole 41.

7 is a strength test of the reaction tank diffuser protection screen according to a preferred embodiment of the present invention at 300kgf, Figure 8 is a reaction tank diffuser protection screen according to a preferred embodiment of the present invention 400kgf FIG. 9 is a strength test diagram of the reaction tank engine protection screen according to the preferred embodiment of the present invention under a working load of 500 kgf.

7 to 9 summarize the test results of the strength test chart shown in Table 1 below.

division Displacement (mm) Stress (MPa) Allowable stress (MPa) Judgment 300kgf 1.169 16.824 95 OK 400kgf 1.559 22.458 95 OK 500kgf 1.949 28.107 95 OK

FIG. 7 shows test results when a load of 300 kgf is applied to a common proper portion of the pallet 30, and 300 kgf of the classification in Table 1 corresponds to this. As shown in Table 1, when a load of 300 kgf was applied, the stress was 16.824 MPa, which was less than the allowable value of 95 MPa.

FIG. 8 shows test results when a load of 400 kgf is applied to a common part of the pallet 30. In Table 1, the weight of 22.458 MPa is shown in the classification of 400 kgf. This value was well below the allowable stress of 95 MPa and was OK.

In addition, Figure 9 shows the test results that appear when a load of 500kgf to a common portion of the pallet 30, 500 kgf of the division in Table 1, the stress was 28.107MPa, the OK stress was less than the value of 95MPa.

As described above, the pallet of the present invention is determined to have a very good stress against a load of 300 ~ 500kgf, which can be seen as an excellent result in the industry.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. Therefore, the protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope will be construed as being included in the scope of the present invention.

100: protective screen 10: pallet support
11: support 12: support plate
13 coupling member 20 flat bar
21: seating surface 22: center
30: Pallet 31: Void
40: fixing plate 41: fastening hole
45: connecting plate 50: angle

Claims (5)

A plurality of pallet support parts 10 including a support 11 to which an upper support plate 12a and a lower support plate 12b having fastening holes 41 are provided at upper and lower ends thereof;
A plurality of pieces are combined to form a lattice-shaped frame such that a plurality of pallets 30 seating spaces are provided therein, but a seating surface 21 is provided so that the pallets 30 are seated, and bottom surfaces of the plurality of upper support plates 12a. Flat bar 20 is coupled to the top surface of the; And
And a pallet 30 seated on the seating surface 21 provided in the flat bar 20 and having a plurality of voids 31 formed therein.
The plurality of pallet support 10,
Reactor acid tank protective screen, characterized in that disposed on the bottom of the corner and the center of the pallet (30), respectively.
The method of claim 1, wherein the pallet 30,
The pair is arranged left and right to form a bent portion is coupled so as to face each other, the fixing plate 40 is provided with a fastening hole 41 at the corners and the upper end of each of the plurality of upper support plates (12a) Reaction diaphragm protective screen, characterized in that is fastened by a fastening member.
The method of claim 1, wherein the flat bar 20,
The center 22 protrudes and forms a seating surface 21 to the left and right of the center 22.
delete The method of claim 1,
A plurality of angles (50) is fastened to the wall (W), the upper surface of the angle (50) is a reactor tank protector screen, characterized in that each welded with the lower surface of the end of the plurality of flat bar (20).

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