Blade-driven micropulverization unit

Abstract

The present invention relates to a blade-driven micro-pulverizing unit, which is provided with a pipe connecting body that provides a predetermined flow path to allow inflow and outflow of fluid, a blade rotating body that is rotatably installed on the flow path in the pipe connecting body, and a driver for rotatably driving the blade rotating body, wherein the blade rotating body continuously applies mechanical rotational impact to fluid by high-speed rotation through a multiple stacked blade portion having a plurality of gaps through which fluid can pass, causes the fluid flowing into the inside to be discharged to the outside through the gaps, thereby effectively pulverizing and killing microorganisms and the like contained in the fluid.

Description

Technical Field

[0001] This invention relates to a micro-pulverizing unit (micro-cutting unit), and more specifically, to a blade-driven micro-pulverizing unit that can simultaneously pulverize microorganisms contained in ballast water while being installed in a ballast water treatment device for purifying ballast water to be filled into a ship's ballast tank, thereby meeting environmental regulations for ship ballast water discharge. Background Technology

[0002] Typically, multiple ballast tanks are arranged in a ship to fill seawater supplied from the ship's sea valve box.

[0003] Ballast tanks are located at the bottom or on the port and starboard sides of the hull, so the amount of ballast water (seawater) they contain can be adjusted to lower the ship's center of gravity and control the ship's port and starboard balance according to the weight of the cargo inside the ship, thus enabling the ship to sail smoothly.

[0004] However, when a ship enters a port in another country, the ballast water (seawater) filling the ballast tanks must be discharged from the ship to the outside. In this case, harmful microorganisms, plankton, pathogens, bacteria and other substances contained in the ballast water are discharged together with the ballast water, thereby disrupting the original ecosystem around the sea area and causing marine pollution.

[0005] Therefore, in order to prevent marine pollution caused by ballast water discharge, many countries around the world have put forward environmental regulations for ballast water discharge. The International Maritime Organization (IMO) requires the installation of ballast water treatment devices to remove harmful marine organisms from ballast water before it is discharged into ports and the high seas.

[0006] Therefore, ships are equipped with ballast water treatment systems (BWTS) to purify ballast water in order to meet ballast water discharge regulations.

[0007] In the following text, reference will be made to Figure 1 This describes a conventional ballast water treatment system.

[0008] Figure 1 This is a schematic diagram used to represent a typical ballast water treatment system.

[0009] As shown in the figure, a typical ballast water treatment system is suitable for purifying seawater supplied from the sea valve box 100 to the ballast tank 300, and includes a ballast water treatment device 200.

[0010] Therefore, the seawater introduced from the sea valve box 100 by the ballast pump is purified by the ballast water treatment device 200 and then filled into the ballast tank 300.

[0011] In this case, the ballast water treatment device 200 includes a physical treatment unit 210 for removing harmful microorganisms or plankton contained in seawater, a chemical treatment unit 220 for disinfecting harmful microorganisms or plankton, and a neutralization treatment unit 230 for neutralizing ballast water when it is discharged from the ship to the outside.

[0012] The physical treatment unit 210 is used to physically filter microorganisms, and the chemical treatment unit 220 uses disinfectants with disinfecting effects, such as hypochlorite (NaClO), to disinfect harmful microorganisms or plankton.

[0013] In addition, the ballast water treatment device 200 uses a power-consuming device to disinfect harmful microorganisms contained in the ballast water, such as an electrolysis device, an ultraviolet (UV) disinfection device, or an ozone disinfection device.

[0014] In this case, the conventional physical treatment unit 210 uses a filter element to filter the ballast water.

[0015] The conventional filter element used in the physical processing unit 210 is formed by a filter element with a mesh or disc structure having multiple fine pores or gaps, and the size of these pores or gaps is about 50 to 100 μm.

[0016] Therefore, the filter components filter and remove microorganisms or plankton contained in seawater, thereby initially purifying the seawater.

[0017] However, conventional filter components have the following problems.

[0018] First, conventional filter components must have pores or gaps limited to a size of tens of micrometers to filter microorganisms, which can cause periodic clogging, leading to system shutdowns and increased maintenance costs.

[0019] Secondly, the ballast tanks are filled with approximately 500-3000 tons of ballast water. The corresponding ballast water treatment equipment must be able to process hundreds to thousands of tons of seawater per hour, depending on the size of the ship. Therefore, in order to meet these requirements, the filter components must be very large, making it difficult to ensure installation space and operability. It is also necessary to move the ship to a dry dock for installation or replacement and other maintenance work while the ship is stopped from sailing, resulting in huge losses due to the stoppage.

[0020] Third, the size of the pores or gaps in the filter components must be greater than about 50 μm to ensure the flow rate of seawater, so that microorganisms or planktonic organisms smaller than 50 μm cannot pass through the filter components and are completely filtered out.

[0021] Finally, conventional filtration components cannot filter microorganisms smaller than 50 μm. In order to kill these microorganisms, the chemical treatment unit must use a high concentration of hypochlorite, making a neutralization device necessary to neutralize the hypochlorous acid remaining in the ballast water. Summary of the Invention

[0022] The technical problem that the invention aims to solve

[0023] Therefore, one object of the present invention is to provide a blade-driven micronizer unit that provides a rotatable, multi-stacked blade section with a relatively large gap, which replaces conventional filter components to prevent clogging in seawater supply.

[0024] Another object of the present invention is to provide a blade-driven micro-pulverizing unit that enables conventional physical processing units to be compact, minimizing installation space and allowing maintenance work such as installation or replacement of ballast water treatment devices to be performed on the ship itself without having to move to a dry dock.

[0025] Another object of the present invention is to provide a blade-driven micronizer unit that can effectively kill microorganisms, thereby allowing for minimal chemical treatment in the chemical processing section, thus eliminating the need for neutralization devices to remove residual oxidants from ballast water when it is discharged from a ship.

[0026] Technical solution of the present invention

[0027] To achieve the above objectives, the blade-driven micro-pulverizing unit of the present invention may include: a pipe connector adapted to provide a defined flow path along which fluid is introduced and discharged; a blade rotor rotatably disposed on the flow path formed in the pipe connector; and a driver for rotating the blade rotor, wherein the blade rotor may include multiple stacked blade portions having multiple gaps for fluid to pass through, so as to continuously apply mechanical rotational impact to the fluid by high-speed rotation, causing the fluid flowing in therein to be discharged to the outside through the multiple gaps.

[0028] In this configuration, the blade rotor may include: an upper plate mounted on the drive shaft of the driver; a lower plate spaced apart from the upper plate in the direction of the rotation center axis and having an inlet hole formed in its central portion to introduce fluid therein; and the multiple stacked blade section mounted between the upper plate and the lower plate.

[0029] In this configuration, the multi-stacked blade portion may include: a plurality of first multi-stacked blade portions mounted around the periphery of the inner surfaces of the upper and lower plates to stackably form the plurality of gaps; and a plurality of second multi-stacked blade portions, each having a front end connected to a corresponding first multi-stacked blade portion and a rear end extending radially and thus adjacent to the rotational central axis to stackably form the plurality of gaps.

[0030] Furthermore, each second multi-stacked blade portion may have an inclined arch shape in the rotation direction of the blade rotor, and the rear end of the second multi-stacked blade portion may be located on an imaginary circle around the rotation center axis.

[0031] In this case, ideally, the diameter of the imaginary circle can be smaller than the diameter of the inlet hole in the lower plate.

[0032] Furthermore, the front end of the second multi-stacked blade portion can be inserted into the gap formed by the first multi-stacked blade portion, such that the gap formed by the first multi-stacked blade portion and the gap formed by the second multi-stacked blade portion can be located at a position where they intersect each other.

[0033] Beneficial effects

[0034] As described above, the micronization unit of the present invention has the following advantages.

[0035] First, multiple stacked blade sections with relatively large gaps can be used to prevent blockages in the seawater supply, thereby effectively operating the ballast water treatment unit and significantly reducing its maintenance costs.

[0036] Secondly, the physical processing unit can be compact in size, allowing its associated devices to be effectively positioned to improve space availability, thus enabling its application to various ship structures.

[0037] Third, maintenance work such as the installation or replacement of ballast water treatment equipment can be carried out on the ship itself, thereby significantly reducing the costs associated with ship downtime.

[0038] Finally, minimal chemical treatment can be performed in the chemical treatment department to meet environmental regulations for ballast water discharge without any additional equipment, such as a neutralization unit for removing residual oxidants from the ballast water. Attached Figure Description

[0039] Figure 1 This is a schematic diagram used to represent a typical ballast water treatment system.

[0040] Figure 2 This is a cross-sectional view used to illustrate the micronization unit of the present invention.

[0041] Figure 3This is a perspective view of the blade rotating body of the micro-pulverizing unit of the present invention.

[0042] Figure 4 It is used to represent Figure 3 A bottom view of the rotating blade.

[0043] Figure 5 It is used to represent Figure 3 A top view of the multiple stacked blade sections of the blade rotating body.

[0044] Figure 6 It is used to represent Figure 3 A perspective view of the second multi-stacked blade section of the blade rotating body. Detailed Implementation

[0045] In the following description, the blade-driven micro-pulverizing unit of the present invention will be described in detail with reference to the accompanying drawings.

[0046] like Figure 1 As shown, firstly, the ballast water treatment system includes a ballast water treatment device 200 for purifying and treating seawater. The ballast water treatment device 200 includes a physical treatment unit 210, a chemical treatment unit 220, and a neutralization treatment unit 230.

[0047] The conventional physical treatment section 210 of the ballast water treatment unit 200 must continuously use filter components to filter large amounts of seawater, which leads to periodic clogging of the filter components, causing the ballast water treatment system to malfunction and increasing maintenance costs.

[0048] Therefore, the micro-pulverizing unit of the present invention can replace the filter component used in the physical treatment section 210 of the conventional ballast water treatment device 200, thereby effectively pulverizing and killing microorganisms contained in seawater and preventing blockages in the seawater supply.

[0049] Now, refer to Figures 2 to 6 The blade-driven micro-pulverizing unit of the present invention is described in detail.

[0050] First, refer to Figure 2 The overall structure of the blade-driven micro-pulverizing unit of the present invention is described.

[0051] in this case, Figure 2 The overall structure of the micronization unit 1 of the present invention is shown.

[0052] like Figure 2 As shown, the micro-pulverizing unit 1 includes a tube connector 10, a blade rotator 30, and a driver 80.

[0053] Pipe connector 10 is connected to seawater supply pipe 110 (see...) Figure 1It is used to supply seawater from the sea valve box 100 to the ballast tank 300, and has a pipe structure for providing the flow path through which the seawater passes.

[0054] In this case, the pipe connector 10 has an inlet pipe 11 and an outlet pipe 17, which are connected to the seawater supply pipe 110.

[0055] The inlet pipe 11 has an inlet 12 into which fluid (seawater) is introduced, and the outlet pipe 17 has an outlet 18 into which the introduced fluid is discharged.

[0056] In this configuration, inlet 12 and outlet 18 have flanges that allow pipe connector 10 to be connected to seawater supply pipe 110, and as shown, they are formed on the same horizontal line at opposite positions to each other.

[0057] However, the locations of inlet 12 and outlet 18 are not limited to this; therefore, they can be formed in various locations and directions depending on the location or shape of the seawater supply pipe 110.

[0058] Furthermore, the inlet pipe 11 has a specified length in the horizontal direction, and the tubular pulverizer 15 with a specified length is located at the top of the front side (outlet side) of the inlet pipe 11.

[0059] In this case, the front side of the water inlet pipe 11 facing the inlet 12 in the horizontal direction is blocked, and the partition wall 13 is provided on top of the water inlet pipe 11 connected to the pulverizer 15.

[0060] The partition wall 13 has a connecting hole 14 formed thereon to allow fluid to pass through, such that the internal region of the inlet pipe 11 and the internal region of the pulverizer 15 are connected to each other through the connecting hole 14.

[0061] Therefore, as shown in the figure, the water inlet pipe 11 has an inverted "L" shaped structure that is bent at a right angle.

[0062] Furthermore, the pulverizer 15 is the component into which the blade rotating body 30, which will be discussed later, is inserted, and has a hollow cylindrical structure. The lower side of the pulverizer 15 is connected to the partition wall 13 of the water inlet pipe 11, and the top of the pulverizer 15 is connected to the lower side of the bushing 85 of the drive 80 via a flange.

[0063] In addition, the pulverizer 15 has an outlet hole 16 formed on one of its side walls (outlet side) and thus communicating with the outlet pipe 17, so that the internal region of the pulverizer 15 is in communication with the internal region of the outlet pipe 17.

[0064] In this case, the outlet hole 16 of the pulverizer 15 is formed above the outlet 18 of the water outlet pipe 17. Therefore, the water outlet pipe 17 extends obliquely downward from the outlet hole 16 and then bends in the horizontal direction to form the outlet 18.

[0065] Accordingly, the internal areas of the inlet pipe 11, the pulverizer 15, and the outlet pipe 17 are sequentially connected to each other through the connecting hole 14 and the outlet hole 16.

[0066] At the same time, through the ballast pump (see Figure 1 The fluid (seawater) supplied from the sea valve box 100 moves to the physical treatment unit 210, such as... Figure 1 As indicated by the arrow, in this case, fluid enters the micronization unit 1 of the present invention to replace the conventional physical processing unit 210.

[0067] Accordingly, the fluid (seawater) is introduced into the inlet pipe 11 of the pipe connector 10 through the inlet 12, and the fluid entering the inlet pipe 11 moves into the interior of the pulverizer 15 through the connecting hole 14.

[0068] The fluid entering the pulverizer 15 passes sequentially through the blade rotor 30, outlet hole 16, water outlet pipe 17, and outlet 18, such as... Figure 2 As indicated by the arrow, it then enters the seawater supply pipe 110 again.

[0069] In this case, as referenced Figure 1 As explained, the discharged fluid moves to the chemical processing unit 220.

[0070] Therefore, the fluid enters inlet 12, moves horizontally, moves upward by colliding with the front sidewall surface of inlet pipe 11, and enters the interior of pulverizer 15. Next, the fluid moves downward at an angle and is discharged horizontally through outlet 18 of outlet pipe 17.

[0071] In addition, the internal region of the inlet pipe 11 is provided with guide members of various shapes to smoothly form the flow path of the fluid, so that the fluid can move easily. In the same manner as above, the internal regions of the pulverizer 15 and the outlet pipe 17 are provided with guide members of various shapes to smoothly guide the flow of the fluid.

[0072] Meanwhile, for ease of description, the inlet pipe 11, the pulverizer 15, and the outlet pipe 17 are arranged separately from each other, but they can also be formed integrally with each other. In addition, they can also be detachably connected to each other.

[0073] The driver 80 of the present invention will be described below.

[0074] like Figure 2As shown, the driver 80 includes a drive motor 81, a drive shaft 82, and a bushing 85.

[0075] The drive motor 81 applies a rotational force to the rotating blade body 30 and is connected to the rotating blade body 30 via the drive shaft 82, thereby rotating the entire rotating blade body 30.

[0076] In this case, the drive motor 81 is connected to the bushing 85, and the bushing 85 is connected to the crusher 15 of the pipe connector 10.

[0077] The bushing 85 has a cylindrical structure with a hollow interior, through which the drive shaft 82 passes coupled, and the lower side of the bushing 85 is connected to the top of the crusher 15.

[0078] In this configuration, the drive shaft 82 rotatably passes through the underside of the bushing 85 and the top of the crusher 15, and is thus connected to the blade rotor 30.

[0079] Therefore, the underside of the bushing 85 through which the drive shaft 82 passes and the top of the pulverizer 15 have a sealing structure to prevent fluid leakage.

[0080] In addition, the bearing 86 is located on the underside of the bushing 85 to smoothly rotate the drive shaft 82, and the underside of the bushing 85 through which the drive shaft 82 passes and the top of the crusher 15 are sealed by common methods to prevent fluid leakage.

[0081] In this case, considering the size or scale of the unit, the drive shaft 82 can be extended via a shaft connection and thus connected to the blade rotor 30 if necessary.

[0082] Now, refer to Figures 3 to 6 Detailed description of blade rotating body 30.

[0083] in this case, Figure 3 This is a perspective view showing the blade rotating body 30 of the micronizer unit 1 of the present invention. Figure 4 It is used to represent Figure 3 A bottom view of the blade rotating body 30, and Figure 5 It is used to represent Figure 3 A top view of the multiple stacked blade section 40 of the blade rotating body 30.

[0084] also, Figure 6 It is used to represent Figure 3 A perspective view of the second multi-stacked blade section 60 of the blade rotating body 30.

[0085] in this case, Figure 5The structure of the blade 51 of the first multi-stacked blade section 50 and the blades 61 of the six second multi-stacked blade sections 60 forming a layer of the multi-stacked blade section 40 of the blade rotor 30 is shown for ease of description.

[0086] like Figure 2 As shown, the blade rotor 30 is connected to the communication hole 14 of the water inlet pipe 11 and is thus located in the fluid flow path. As the blade rotor 30 rotates at high speed, the fluid introduced therein passes through multiple gaps G1, G2 and is thus discharged to the outside (radially), thereby crushing and killing the microorganisms contained in the fluid.

[0087] In this case, such as Figure 3 As shown, the blade rotor 30 has a multi-stacked blade section 40 with multiple gaps G1 and G2 repeatedly formed, and the multi-stacked blade section 40 is cylindrical, allowing fluid to enter its center.

[0088] Therefore, the fluid flows along the rotation center axis (drive shaft) S of the blade rotor 30 (see... Figure 4 The direction of the blade is introduced into the interior of the blade rotor 30 through the connecting hole 14 of the tube connector 10, and passes through the rotation region A of the multiple stacked blade section 40 (see) by means of the rotation of the blade rotor 30 by the driver 80. Figure 5 The blades pass through multiple gaps G1 and G2 formed in the multi-stacked blade section 40 and are discharged radially.

[0089] like Figure 3 As shown, the blade rotating body 30 includes an upper plate 31, a lower plate 35, and a multi-stacked blade section 40.

[0090] In this case, the upper plate 31 and the lower plate 35 have the shape of circular plates and each has a specified area and thickness, and are spaced apart from each other facing each other in the direction of the rotation center axis S.

[0091] In this case, such as Figure 3 As shown, the drive shaft 82 is connected to the central part of the upper plate 31.

[0092] In addition, such as Figure 4 As shown, the lower plate 35 has the same circular plate as the upper plate 31, and has an inlet hole 36 through its central portion to introduce fluid into it.

[0093] The inlet hole 36 is formed to correspond to the connecting hole 14 of the water inlet pipe 11.

[0094] The blade rotor 30 is coupled to the drive shaft 82 and therefore rotates at high speed. Consequently, the lower plate 35 is positioned spaced apart from the top of the partition wall 13 formed on the inlet pipe 11. Ideally, in this configuration, a cylindrical guide member is arranged along the inner circumferential surface of the connecting hole 14 to allow fluid to efficiently enter the interior of the inlet hole 36.

[0095] In addition, such as Figure 3 As shown, the multi-stacked blade section 40 is disposed between the upper plate 31 and the lower plate 35.

[0096] The multi-stacked blade section 40 is used to crush and kill microorganisms contained in the fluid by means of high-speed rotation, and is arranged between the upper plate 31 and the lower plate 35 to repeatedly form multiple gaps G1 and G2 in the direction of the rotation center axis S, so that the fluid introduced into the central part of the blade rotating body 30 is discharged to the outside (radially) through the multiple gaps G1 and G2.

[0097] In this case, the multi-stacked blade section 40 includes a first multi-stacked blade section 50 and a second multi-stacked blade section 60, and as... Figure 4 and Figure 5 As shown, they are configured to form a rotating region A (a circular band of a predetermined width around the rotation center axis S) along the periphery of the blade rotating body 30.

[0098] The first multi-stacked blade section 50 has a plurality of circular strip blades 51, which are sequentially stacked on top of each other while being mounted along the periphery of the inner surfaces (facing surfaces) of the upper plate 31 and the lower plate 35 to repeatedly form a plurality of gaps G1 in the direction of the rotational central axis S.

[0099] As a result, Figure 3 As shown, the gap G1 is arranged in a ring around the periphery of the blade rotating body 30 with the rotation center axis S as the center, and thus is repeatedly stacked in the direction of the rotation center axis S to form a cylinder.

[0100] In this case, ideally, the outer diameter of the entire blade 51 of each first multi-stacked blade section 50 is slightly smaller than the outer diameter of the upper plate 31 and the lower plate 35, thereby ensuring damage resistance and stability.

[0101] like Figure 5 As shown, each of the first multi-stacked blade portions 50 has through holes 53 formed at predetermined intervals, and fixing bolts 70 are connected to the through holes 53 through the holes.

[0102] The fixing bolt 70 is penetrated and connected to the connecting hole 37 formed radially along the periphery of the lower plate 35, thereby allowing the lower plate 35 and the first multi-stacked blade portion 50 to be fixed to the upper plate 31.

[0103] In addition, such as Figure 6As shown, each second multi-stacked blade section 60 includes a pair of retainers 62 and a plurality of blades 61 disposed between the pair of retainers 62.

[0104] Second multi-stacked blade section 60 Figure 6 As shown, a portion of the blade 61 is removed, and the blade 61 is configured to form a stacked portion in which the same gap G2 is repeatedly formed.

[0105] In this case, the blade 61 has strips stacked on top of each other to form a gap G2.

[0106] Each second multi-stacked blade section 60 is configured such that the front end of the blade 61 is coupled into the gap G1 of each first multi-stacked blade section 50 and the rear end of the blade 61 extends to a predetermined length and is thus adjacent to the rotation center axis S of the blade rotor 30.

[0107] In this case, such as Figure 5 and 6 As shown, each of the second multi-stacked blade portions 60 has an arched shape of a specified length, and the six second multi-stacked blade portions 60 are arranged radially around the rotation center axis S along the blade 51 of each first multi-stacked blade portion 50.

[0108] In this case, such as Figure 5 As shown, each blade 61 has an arched shape that is inclined in its rotational direction.

[0109] In addition, such as Figure 5 As shown, the rear ends of the six blades 61 extending in the direction of the rotation center axis S are located on an imaginary circle C with a specified diameter.

[0110] In this case, such as Figure 4 As shown, the diameter of the imaginary circle C is slightly smaller than the diameter of the inlet hole 36 for introducing fluid. Therefore, when viewed from the underside of the blade rotor 30, the rear end of the second multi-stacked blade section 60 is exposed to the outside.

[0111] As a result, the fluid introduced from the inlet hole 36 of the lower plate 35 enters the rotating region A of the multi-stacked blade section 40, rotates together with the multi-stacked blade section 40, and is discharged radially.

[0112] In this case, such as Figure 5 As shown, the tip of the blade 61 is ideally connected to the blade 51 of the corresponding first multi-stacked blade section 50 so as to protrude outward from the blade 51, but as Figure 3 As shown, they do not protrude outward from the periphery of the upper plate 31 and the lower plate 35, thus ensuring the protection and stability of the blade 61 from damage.

[0113] In addition, the retainer 62 and the blade 61 have through holes 67 and 68 formed at their two ends in the same straight line in the vertical direction, and an inclined surface 63 is formed at their front end.

[0114] In this case, such as Figure 3 As shown, the fixing bolt 70 is connected through the through holes 67 and 68, thereby fixing the second multi-stacked blade section 60 to the upper plate 31 by means of the fixing bolt 70 and the nut.

[0115] Specifically, the fixing bolts 70 for connecting the lower plate 35 and the first multi-stacked blade portion 50 to the upper plate 31 are connected to the through hole 68 formed on the front end of the blade 61, and the fixing bolts 70 for connecting the second multi-stacked blade portion 60 to the upper plate 31 are connected to the through hole 67 formed on the rear end of the blade 61.

[0116] Therefore, when the driver 80 rotates, the first multi-stacked blade section 50 and the second multi-stacked blade section 60 rotate together with the upper plate 31 and the lower plate 35.

[0117] Furthermore, the front end of the retainer 62 and the blade 61 of the second multi-stacked blade section 60 are coupledly inserted into the gap G1 of the first multi-stacked blade section 50, such that the second multi-stacked blade section 60 provides a gap G2 corresponding to the thickness of the blade 51 of the first multi-stacked blade section 50.

[0118] Therefore, the spacer 65 corresponding to the gap G1 is fitted into the through hole 67 formed on the rear end of the second multi-stacked blade section 60.

[0119] Spacer 65 is a common washer that can be fitted onto fixing bolt 70, but they can be freely used as spacers 65 as long as the specified components can maintain the gap G2.

[0120] As a result, the blades 61 of the second multi-stacked blade section 60 are stacked on top of each other while maintaining a gap G2 corresponding to the thickness of the spacer 65.

[0121] Furthermore, the tip of the blade 61 of the second multi-stacked blade section 60 is alternately stacked with the blade 51 of the first multi-stacked blade section 50. As a result, the blade 61 of the second multi-stacked blade section 60 maintains the gap G1 fitted to the first multi-stacked blade section 50. Therefore, the gap G1 formed by the first multi-stacked blade section 50 and the gap G2 formed by the second multi-stacked blade section 60 do not have any equal height and are thus located at the intersection of them.

[0122] Specifically, when viewed in the horizontal direction of the blade rotating body 30, the blade 51 of the first multi-stacked blade section 50 is located at the same height as the gap G2 of the second multi-stacked blade section 60, and the blade 61 of the second multi-stacked blade section 60 is located at the same height as the gap G1 of the first multi-stacked blade section 50.

[0123] Furthermore, if the blade 51 of the first multi-stacked blade section 50 has the same thickness as the blade 61 of the second multi-stacked blade section 60, then the gaps G1 and G2 have the same thickness.

[0124] As a result, the fluid passing through the gap G2 of the second multi-stacked blade section 60 collides with the blades 51 of the first multi-stacked blade section 50 while having centrifugal force applied to it, so that microorganisms can be more effectively crushed and killed.

[0125] In this case, taking into account the thickness of the blade 51 of the first multi-stacked blade section 50, the second multi-stacked blade section 60 has a spacer 65 of appropriate thickness, thereby appropriately adjusting the gaps G1 and G2.

[0126] Specifically, spacers 65 are not required on the overlapping portions of the first multi-stacked blade portion 50 and the second multi-stacked blade portion 60. However, if it is necessary to adjust the gaps G1 and G2, spacers 65 may be located on the overlapping portions of the first multi-stacked blade portion 50 and the second multi-stacked blade portion 60.

[0127] According to the invention, the gap between the first multi-stacked blade portion 50 and the second multi-stacked blade portion 60 is ideally maintained at about 2 to 5 mm, but is not limited thereto, and can be appropriately determined taking into account the flow rate of seawater or available conditions.

[0128] If the gaps G1 and G2 are too small, they can effectively remove microorganisms, but cannot guarantee an appropriate fluid volume. Conversely, if the gaps G1 and G2 are too large, although a larger fluid volume can be guaranteed, the removal effect on microorganisms will be worse.

[0129] Therefore, the sizes of gaps G1 and G2 should be appropriately determined, taking into account factors such as seawater flow velocity, the size or nature of the microorganisms to be removed, etc.

[0130] Furthermore, even though the paired retainers 62 of the second multi-stacked blade section 60 are also inserted into the gap G1 of the first multi-stacked blade section 50, they have a suitable thickness determined with respect to the gap G1 of the first multi-stacked blade section 50.

[0131] The operation of the blade-driven micro-pulverizing unit 1 of the present invention will be described in detail below.

[0132] First, such as Figure 1 As shown, seawater enters the physical treatment section 210 of the ballast water treatment device 200 from the sea valve box 100 via a ballast pump. In this case, the seawater enters the micro-pulverizing unit 1 of the present invention, which replaces the conventional filter element used in the physical treatment section 210.

[0133] In this case, since the seawater supply pipe 110 is connected to the inlet pipe 11 of the pipe connector 10, the fluid (seawater) enters the inlet pipe 11 through the inlet 12, moves upward, passes through the connecting hole 14 of the partition wall 13 and the inlet hole 36 formed on the lower plate 35 of the blade rotor 30, and enters the rotation area A of the blade rotor 30.

[0134] Furthermore, since the blade rotor 30 and the multi-stacked blade section 40 rotate at high speed due to the rotation of the driver 80, the fluid entering the rotation area A of the multi-stacked blade section 40 rotates together with the multi-stacked blade section 40.

[0135] In this case, the fluid receives the flow pressure from the ballast pump and the centrifugal force generated by the rotation of the multi-stacked blade section 40, passes through the gap G2 of the second multi-stacked blade section 60 and the gap G1 of the first multi-stacked blade section 50, and is discharged to the outside of the blade rotating body 30 (in the radial direction).

[0136] In this case, the blade rotor 30 ideally rotates at a high speed, typically about 850 to 1200 rpm, but the rotation speed can be appropriately determined according to the flow rate, the size of the gaps G1 and G2 of the blade rotor 30, etc.

[0137] Furthermore, the blades 51 and 61 of the first multi-stacked blade section 50 and the second multi-stacked blade section 60 apply rotational force while allowing fluid to pass through them, and as the fluid passes through gaps G1 and G2 and is pushed outward, the blades 51 and 61 continuously apply mechanical rotational impact to the fluid. In this situation, the fluid generates complex vortices as it collides with or is cut by the blades 51 and 61, thereby being discharged radially along the blade rotating body 30.

[0138] As a result, the microorganisms contained in the fluid repeatedly collide with or are cut by the blades 51 of the first multi-stacked blade section 50 and the blades 61 of the second multi-stacked blade section 60, causing them to be crushed and killed.

[0139] In addition, such as Figure 2 As shown, the fluid passing through the blade rotor 30 moves obliquely downwards and enters the outlet pipe 17. Next, the fluid passes through the seawater supply pipe 110 and enters the chemical treatment section 220.

[0140] Therefore, the micro-grinding unit 1 of the present invention has multiple stacked blade sections 40 with a relatively large gap compared to conventional filter components, thereby preventing periodic clogging during seawater supply. Moreover, the micro-grinding unit 1 of the present invention is compact in size, so maintenance work such as installation or replacement of ballast water treatment devices can be carried out on the ship itself without having to move to a dry dock, thereby significantly reducing costs caused by downtime.

[0141] Furthermore, since the mechanical rotational impact is applied directly to the fluid, ultra-small microorganisms can be completely killed, thus fully meeting the environmental regulations for ballast water discharge.

[0142] As described above, a preferred embodiment of the micronization unit of the present invention has been explained, but the present invention is not limited thereto, and various other embodiments may be adopted.

[0143] The blades 51 of each first multi-stacked blade section 50 are connected to each other to have an integral structure in the form of a single ring, but for example, six blades 51 can be individually connected to each other to form a circular blade 51 in the same way as the second multi-stacked blade section 60.

[0144] In this case, if some blades 51 of the first multi-stacked blade section 50 are damaged, only the damaged blades 51 are replaced with new ones, making it easy to maintain them.

[0145] Furthermore, each second multi-stacked blade section 60 having six radially arranged arched blades 61 has been described, but the number of blades 61 can be appropriately determined according to the flow rate to be processed, the gaps G1 and G2, etc.

[0146] Furthermore, it has been explained that the blades 61 of the second multi-stacked blade section 60 have a gently sloping arched structure, but they may have a sloping linear or elliptical structure or a combination thereof.

[0147] Industrial utilization

[0148] As described above, the blade-driven micro-pulverizing unit of the present invention can be applied to ballast water treatment devices 200 used to remove harmful microorganisms or plankton contained in seawater, as well as to various fluid supply lines suitable for pulverizing and killing microorganisms contained in fluids.

Claims

1. A blade-driven micro-pulverizing unit, comprising: a pipe connection body adapted to provide a prescribed flow path along which fluid is introduced and discharged; a blade rotating body rotatably disposed on the flow path formed in the pipe connection body; and a driver for rotating the blade rotating body, the blade-driven micro-pulverizing unit being characterized in that the blade rotating body comprises a plurality of stacked blade portions having a plurality of gaps for fluid to pass through to continuously apply mechanical rotational impact to fluid by high-speed rotation such that fluid flowing therein is discharged radially to the outside through the plurality of gaps, and the blade rotating body comprises: an upper plate fitted on a driving shaft of the driver; a lower plate spaced apart from the upper plate in the direction of a rotational center axis and having an inlet hole formed on a central portion thereof to introduce fluid therein; and the plurality of stacked blade portions installed between the upper plate and the lower plate, the plurality of stacked blade portions including annular first stacked blades and arched second stacked blades.

2. The blade-driven micro-pulverizing unit according to claim 1, wherein the plurality of stacked blade portions comprise: a plurality of first stacked blade portions installed along the periphery of inner surfaces of the upper plate and the lower plate to stackedly form the plurality of gaps; and a plurality of second stacked blade portions each having a front end coupled with a corresponding first stacked blade portion and a rear end extending radially and thus adjacent to the rotational center axis to stackedly form the plurality of gaps.

3. The blade-driven micro-pulverizing unit according to claim 2, wherein each second stacked blade portion has an inclined arch in the rotational direction of the blade rotating body, and the rear end of the second stacked blade portion is located on an imaginary circle around the rotational center axis.

4. The blade-driven micro-pulverizing unit according to claim 3, wherein the diameter of the imaginary circle is smaller than the diameter of the inlet hole of the lower plate.

5. The blade-driven micro-pulverizing unit according to any one of claims 2 to 4, wherein the front end of the second stacked blade portion is inserted into the gap formed by the first stacked blade portion such that the gap formed by the first stacked blade portion and the gap formed by the second stacked blade portion are located at positions intersecting each other. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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