Water purification system

Abstract

In a water purification device operating at an ultra-low speed, the present invention provides a structure that allows for a sufficiently large vertical length of the cylindrical flow. [Solution] In the comparative example shown in Figure 7(a), the vertical length Ha of the cylindrical flow 48 is limited. In contrast, with the water purification device 10 with the structure shown in Figure 7(b), the vertical length Hb of the cylindrical flow 48 becomes sufficiently large.

Description

【Technical Field】 【0001】 The present invention relates to a water purification device installed in large water tanks, ponds, marshes, lakes, river mouths, inlets, etc. and used for water purification. 【Background Art】 【0002】 In waters where the flow is extremely small or no flow can be expected, such as large water tanks, ponds, marshes, lakes, river mouths, inlets, etc., corruption and oxygen deficiency become problems. Various countermeasures have been proposed to eliminate corruption and oxygen deficiency. Among them, a water purification device with excellent energy-saving performance is known (see, for example, Patent Document 1 (Figure 2)). 【0003】 Patent Document 1 will be described based on the following figure. FIG. 11 is a diagram for explaining the basic structure of a conventional water purification device. The water purification device 100 includes a base 102 supported by a float 101, a motor 103 supported by this base 102, a disk 105 supported by a motor shaft 104 of this motor 103, and a plurality of blades 106 radially arranged on the lower surface of this disk 105. The disk 105 is a hollow body and also serves as a floating body. 【0004】 When the disk 105 is rotated by the motor shaft 104, a flow indicated by an arrow (111) is generated on the water surface 107 by the blades 106. In conjunction with the flow of the arrow (111), a cylindrical flow (arrow (112)) is generated. Due to this cylindrical flow, the circulation of water is maintained and corruption and oxygen deficiency are eliminated. 【0005】 The motor shaft 104 is rotated at a rotational speed of 3 to 6 revolutions per minute. Since the rotational speed of a general-purpose electric motor is 1450 to 1500 revolutions per minute, the rotational speed of 3 to 6 revolutions per minute is an ultra-low speed. If it is an ultra-low speed, there is an advantage that very little electric energy needs to be supplied to the motor 103. 【0006】 On the other hand, it was found that the water purification device 100 has the following drawbacks. Firstly, the flows indicated by arrows (113) and (114) strike disk 105 after rising and remain there for a while. This stagnation weakens the flows indicated by arrows (113) and (114). 【0007】 Secondly, in the case of a relatively shallow pond or sea, the cylindrical flow (arrow (112)) generated by the water purification device 100 reaches near the bottom, but if it is deeper than that, the cylindrical flow (arrow (112)) does not reach the bottom. In other words, there is a limit to the height of the cylindrical flow (arrow (112)) generated by the water purification device 100. 【0008】 However, even with a water purification device that rotates at an ultra-low speed, a structure is desired that can sufficiently increase the height of the cylindrical flow (arrow (112)) and also strengthen the cylindrical flow (arrow (112)). [Prior art documents] [Patent Documents] 【0009】 [Patent Document 1] Patent No. 3360075 [Overview of the project] [Problems that the invention aims to solve] 【0010】 The present invention aims to provide a structure for an ultra-low-speed rotating water purification device that can sufficiently increase the vertical length of the cylindrical flow and strengthen the cylindrical flow. [Means for solving the problem] 【0011】 The invention according to claim 1 is a water purification device that purifies water by floating and rotating blades that extend radially along the water surface from a rotating shaft that is erected perpendicular to the water surface, without splashing the water on the water surface, and creating a stream of water that flows radially from the center of rotation of the blades on the water surface. The vane consists of an upper flange, a lower flange, and a web connecting them, forming a channel that opens forward in the direction of travel, with the upper flange positioned on the water surface and the lower flange positioned in the water, and the upper flange and the lower flange exert an action of gripping the water on the water surface. The blade consists of a first blade portion extending horizontally from the axis of rotation and a second blade portion extending horizontally further from the tip of the first blade portion. When the length along the rotation axis is referred to as the height dimension, the height dimension of the first blade is set to be greater than the height dimension of the second blade. 【0012】 The invention according to claim 2 is a water purification device that purifies water by floating and rotating upper blades that extend radially along the water surface from a rotating shaft that is erected perpendicular to the water surface, and without splashing the water surface, by creating a river flowing radially from the center of rotation of the upper blades on the water surface. The upper vane consists of an upper flange, a lower flange, and a web connecting them, forming a channel that opens forward in the direction of travel, with the upper flange positioned on the water surface and the lower flange positioned in the water, and the upper flange and the lower flange exert an action of gripping the water on the water surface. Below the aforementioned upper feather, there is further a lower feather, The radius of the lower blade is set to be smaller than the radius of the upper blade. 【0013】 The invention according to claim 3 is a water purification device that purifies water by floating and rotating blades that extend radially along the water surface from a rotating shaft that is erected perpendicular to the water surface, without splashing the water on the water surface, and creating a river flowing radially from the center of rotation of the blades on the water surface. The aforementioned vane consists of an upper flange and a web extending downward from this upper flange, and is an angle that opens forward in the direction of travel. The blade consists of a first blade portion extending horizontally from the axis of rotation and a second blade portion extending horizontally further from the tip of the first blade portion. When the length along the rotation axis is defined as the height dimension, the height dimension of the first blade root is set to be larger than the height dimension of the second blade root. 【0014】 The invention according to claim 4 is a water purification device that floats and rotates blades that extend radially along the water surface from a rotation axis standing perpendicular to the water surface, causing a river that flows radially from the center of rotation of the blades on the water surface without splashing the water on the water surface, thereby purifying the water. The blade consists of a first blade root that extends horizontally from the rotation axis and a second blade root that further extends horizontally from the tip of the first blade root. When the length along the rotation axis is defined as the height dimension, the height dimension of the first blade root is set to be larger than the height dimension of the second blade root. 【Advantages of the Invention】 【0015】 In the invention according to claim 1, upper and lower flanges are provided on the blade. Since the upper and lower flanges grasp the water on the water surface, the blade effectively exerts the action of pushing the water on the water surface horizontally. By pushing it horizontally, an upward flow is generated and strengthened. Then, the blades are extended radially from the rotation axis. There is a fan-shaped space between the blades, and due to the existence of this fan-shaped space, the upward flow is maintained without being hindered. 【0016】 Also, the radius of the first blade root is set to be small. Since the radius of the first blade root is made small, the length in the height direction of the cylindrical flow becomes sufficiently large. Therefore, according to the present invention, in a water purification device with ultra-low-speed rotation, a structure is provided that can make the length in the height direction of the cylindrical flow sufficiently large and strengthen the cylindrical flow. 【0017】 In the invention according to claim 2, similar to claim 1, upper and lower flanges are provided on the blade. Since the upper and lower flanges grasp the water on the water surface, the blade effectively exerts the action of pushing the water on the water surface horizontally. By pushing it horizontally, an upward flow is generated and strengthened. Then, the blades were radially extended from the rotation axis. There is a fan-shaped space between the blades, and due to the existence of this fan-shaped space, the upward flow is maintained without being hindered. 【0018】 Also, the radius of the lower blades was reduced. Since the radius of the lower blades was reduced, the length of the cylindrical flow in the height direction becomes sufficiently large. Therefore, according to the present invention, in a water purification device with ultra-low speed rotation, a structure is provided that can sufficiently increase the length of the cylindrical flow in the height direction and strengthen the cylindrical flow. 【0019】 In addition, in claim 2, the blades can be separately manufactured as upper blades and lower blades, and then connected with bolts or the like to form one large blade. Since they can be separately manufactured, the manufacturing cost can be reduced. 【0020】 In the invention according to claim 3, similar to claim 1, the first blade part has a reduced radius. Since the radius of the first blade part is reduced, the length of the cylindrical flow in the height direction becomes sufficiently large. Therefore, according to the present invention, in a water purification device with ultra-low speed rotation, a structure is provided that can sufficiently increase the length of the cylindrical flow in the height direction and strengthen the cylindrical flow. 【0021】 In addition, in claim 3, it is possible to prevent water from escaping upward at the upper flange. Although the force of holding water is weaker than the structure shown in claim 1, the structure of the blades becomes simpler and the weight of the blades can be reduced due to the absence of the lower flange. 【0022】 In the invention according to claim 4, similar to claim 1, the first blade part has a reduced radius. Since the radius of the first blade part is reduced, the length of the cylindrical flow in the height direction becomes sufficiently large. Therefore, according to the present invention, in a water purification device with ultra-low speed rotation, a structure is provided that can sufficiently increase the length of the cylindrical flow in the height direction and strengthen the cylindrical flow. 【0023】 In addition, in claim 4, the upper and lower flanges are missing, allowing water to escape vertically. Although this further weakens the water-grabbing force compared to the structure shown in claim 1, it simplifies the blade structure considerably and allows for significant weight reduction of the blades. [Brief explanation of the drawing] 【0024】 [Figure 1] This is a front view of the water purification device according to the present invention. [Figure 2] This is a view from arrow 2-2 in Figure 1. [Figure 3] This is a view from arrow 3-3 in Figure 1. [Figure 4] This is a cross-sectional view taken along line 4-4 in Figure 1. [Figure 5] (a) is a perspective view of the wing, (b) is a front view of the first wing section, and (c) is a front view of the second wing section. [Figure 6] (a) is a cross-sectional view along line 6a-6a in Figure 1, and (b) and (c) are diagrams illustrating the operation of the blades. [Figure 7] (a) is a diagram showing a comparative example, and (b) is a diagram illustrating the operation of the water purification device of the present invention. [Figure 8] This is a front view of a water purification device according to a modified example of the present invention. [Figure 9] (a) to (c) are diagrams illustrating the structure of the wings in relation to further modifications. [Figure 10] (a) to (c) are diagrams illustrating the structure of the wings in relation to further modifications. [Figure 11] This diagram illustrates the basic structure of a conventional water purification system. [Modes for carrying out the invention] 【0025】 Embodiments of the present invention will be described below with reference to the attached drawings. [Examples] 【0026】 As shown in Figure 1, the water purification device 10 is a device that purifies water by floating and rotating blades 30 that extend radially along the water surface 11 from a rotating shaft 12 that is erected vertically on the water surface 11, without splashing the water on the water surface 11, and creating a stream of water that flows radially from the center of rotation of the blades 30 (the center of the rotating shaft 12) on the water surface 11. 【0027】 [Rotation speed] The bottom of lakes, ponds, rivers, and the seabed will be referred to as the "bottom of the water" below. The agitator blades installed at the bottom of the water rotate at a speed of at least several revolutions per second. If it rotates at 5 revolutions per second, that is 300 revolutions per minute. If a stirring blade rotating at 5 revolutions per second (300 revolutions per minute) were to be placed on the water surface 11, the water on the water surface 11 would splash up, making it unsuitable for the present invention. 【0028】 If the rotation speed is reduced to 0.1 revolutions per second (6 revolutions per minute) or less, the water on the surface 11 will not splash up. In this invention, the rotation speed of the blades is set to 0.1 revolutions per second (6 revolutions per minute) or less. This setting prevents the water on the water surface 11 from splashing up. 【0029】 [Water purification system] The specific structure of the water purification device 10 for this purpose is described below. As shown in Figure 1, the water purification device 10 consists of a plurality of floats 13, a bridge 14 spanning the floats 13, a motor with a reduction gear 16 mounted in the center of the bridge 14 with the motor shaft 15 extending downward, a rotating shaft 12 connected to the motor shaft 15 and extending downward, and a blade 30 fixed to this rotating shaft 12. 【0030】 In principle, wires are extended from multiple points on land and the ends of the wires are tied to the bridge 14. This prevents the bridge 14 and float 13 from rotating and moving. However, it is permissible to eliminate the wires and make the water purification device 10 movable and rotatable. 【0031】 [Motor with reduction gear] The motor with reduction gear 16 is a structure that integrates a gear-type reduction gear with a reduction ratio of approximately 1:400 and an electric motor with a rated rotational speed of approximately 1500 revolutions per minute. Specifically, the input shaft of the gear reducer will be made into a hollow shaft. The motor shaft of the electric motor will be fitted onto this hollow shaft. 【0032】 While it is possible to fit a drive pulley onto the motor shaft 15, a driven pulley onto the input shaft of a gear-type reducer, and a timing belt between the drive pulley and the driven pulley, using a motor 16 with a reduction gear has the advantage of eliminating the need for a drive pulley, driven pulley, and timing belt. 【0033】 Furthermore, when drive pulleys, driven pulleys, and timing belts are present, waterproof covers are essential to protect them, and these waterproof covers tend to be large and have a complex structure. In this respect, a motor with a gearbox 16 has the advantage that the motor and gearbox can be housed in a single enclosure, making waterproofing easy, and even if a protective cover is provided, this cover can be small and have a simple structure. Therefore, a motor 16 with a reduction gear is suitable for the water purification device 100 of the present invention, which is used outdoors and floats on the water surface. 【0034】 The motor with a reduction gear 16 can be a geared motor in which the gears of the gear-type reduction gear are composed of spur gears or helical gears. Alternatively, a motor with a planetary gear reducer may be used, where the gears of the gear-type reducer are composed of planetary gears. Alternatively, the gear reducer may be a cycloidal-trochoidal reducer motor, where the gear reducer is composed of a cycloidal-trochoidal reducer. 【0035】 In a geared motor, the motor shaft and the reduction gear output shaft are misaligned perpendicular to each other. Therefore, when mounting it vertically, balance adjustment is necessary. In contrast, motors with planetary gear reducers and motors with cycloidal-trochoidal gear reducers are preferable because the motor shaft and the reducer output shaft lie on the same axis and have a symmetrical structure with respect to the vertical axis, thus eliminating (or making easy) the need for balance adjustment. However, geared motors have the advantage of being less expensive than motors with planetary gear reducers or motors with cycloidal or trochoidal gear reducers. Therefore, the selection of the motor 16 with a reduction gear may be made as appropriate. 【0036】 [Material of the element] The material of the float 13 is preferably foamed resin, particularly expanded polystyrene (styrene that has been foamed). The material for bridge 14 is preferably stainless steel, which combines strength and water resistance. However, the materials of each element may be changed or selected as appropriate. 【0037】 [Number of floats] As shown in Figure 2, three floats 13 are arranged at 120° intervals. Therefore, the bridge 14 has three legs. Preferably, a motor mounting plate 17 is provided in the center of the bridge 14, and a motor 16 with a reduction gear is fixed to this motor mounting plate 17 with bolts 18. Also preferably, the bridge 14 is extended from the motor mounting plate 17. Note that the number of floats 13 can be three or more. Depending on the number of floats 13, the bridge 14 will have four legs, five legs, or so. 【0038】 [Number of feathers] As shown in Figure 3, three blades 30 extend radially from the rotation axis 12. The blades 30 are arranged at 120° intervals, but can also be arranged as four blades at 90° intervals or five blades at 72° intervals. However, since manufacturing costs increase with each additional blade (30 blades), a three-blade design is preferable. 【0039】 The blades 30 are fixed to the rotating shaft 12, but in order to relieve stress on the fixing part, an upper bracket 31 may be attached to the rotating shaft 12 and the blades 30 may be fixed to this upper bracket 31 with bolts 32. 【0040】 In addition, as shown in Figure 4, a lower bracket 33 may be attached to the rotating shaft 12, and the blades 30 may be fixed to this lower bracket 33 with bolts 34. 【0041】 [Feather details] As shown in Figure 5(a), the blade 30 consists of an upper flange 36, lower flanges 37 and 38, and a web 39 connecting them, forming a channel that opens forward in the direction of travel. That is, the rotation axis 12 rotates as indicated by the arrow, and the channel opens forward in the direction of travel. 【0042】 The blade 30 shown in Figure 5(a) will be explained by dividing it into sections for convenience. As shown in Figure 5(b), the first blade portion 41 extends horizontally from the rotation axis 12. The radius of the first blade portion 41 is R1, and the height dimension, defined by the length along the rotation axis 12, is H1. The first blade section 41 primarily generates an upward flow of water 43. 【0043】 As shown in Figure 5(c), the second wing section 42 extends horizontally from the first wing section 41, which is shown by the dashed line. The radius (turning radius) of the second wing section 42 is R2, and its height dimension is H2. As is clear from the figure, the height dimension H2 of the second wing section 42 is set to be smaller than the height dimension H1 of the first wing section 41. Centrifugal force is mrω 2 It is defined as (m is mass, r is the turning radius, and ω is the angular velocity). Because the radius R2 of the second blade section 42 is large, the centrifugal force generated in the second blade section 42 is large. As a result, the second blade section 42 generates a lateral flow 44 along the water surface. 【0044】 As shown in Figure 5(a), the web 39 can be made from a single piece. However, this will result in a lower material yield. Therefore, the first blade section 41 and the second blade section 42 may be manufactured separately, and the second blade section 42 may be connected to the first blade section 41. This improves material yield. Therefore, the method for manufacturing the feather 30 can be freely selected. 【0045】 [The action of channel-shaped blades] As shown in Figure 6(a), the channel-shaped vane 30 moves in the direction of the arrow. At this time, the upper flange 36 prevents water from escaping upwards. The lower flanges 37 and 38 prevent water from escaping downwards. In other words, the channel-shaped vane 30 exerts an effect of gripping the water on the water surface 11. 【0046】 As shown in Figure 6(b), when the channel-shaped vane 30 moves, a triangular cross-sectional space 46 is created instantaneously. The water beneath the vane 30 rises to fill this space 46. In other words, as shown in Figure 6(c), an upward flow 43 is generated as the space 46 is filled. This phenomenon continues as the blade 30 moves. 【0047】 In addition, as shown in Figure 4, a large sector-shaped space 47 is formed between adjacent blades 30. An upward flow (reference numeral 43 in Figure 6(c)) passes through this sector-shaped space 47. Therefore, in this invention, the upward flow (Figure 6(c), reference numeral 43) reaches the water surface (Figure 1, reference numeral 11) smoothly without being obstructed by the disc (Figure 11, reference numeral 105). As a result, the upward trend will be strengthened. 【0048】 [How water purification systems work] Figure 7(a) shows a comparative example, and Figure 7(b) shows an example. In the comparative example shown in Figure 7(a), the height dimension H2 of the blade 30 is small. And because the radius of the blade 30 is large, the length Ha of the cylindrical flow 48 is not very large. 【0049】 In contrast, in the embodiment shown in Figure 7(b), the first blade portion 41 of the blade 30 has a small radius R1 and extends downwards to a height dimension H1. As the diameter (radius) of the blade 30 decreases, the length Hb of the cylindrical flow 48 increases. In other words, the blade 30 according to the present invention comprises a first blade portion 41 and a second blade portion 42, and the small-diameter first blade portion 41 increases the length Hb of the cylindrical flow 48. 【0050】 Although the operation of the water purification device 10 was explained visually in Figures 7(a) and (b), it can also be explained using mathematical formulas. The inventors have researched, prototyped, experimented with, and acquired experimental data on the water purification device 10 over a long period of time. Based on these experiments, they devised the following [Equation 1]. 【0051】 【number】 【0052】 Although the experimental data will not be presented here, it was confirmed that the experimental data is in good agreement with [Equation 1]. In Figure 7(a), the radius of the blade 30 is large. In [Equation 1], as R increases, H decreases. This is consistent with the fact that the vertical length Ha of the cylindrical flow 48 decreases in Figure 7(a). In Figure 7(b), the radius R1 of the first vane section 41 is small. In [Equation 1], as R decreases, H increases. This corresponds to the fact that the length Hb of the cylindrical flow 48 increases in Figure 7(b). 【0053】 Furthermore, the following usage of [Number 1] is recommended. In Figure 7(b), R is 2m and M is 300m. 3 Assume that a water purification device 10 with H at a rate of 10 m / min is in practical use. 【0054】 M is 300m 3 When trying to find R such that H is 30m while keeping the value per minute, [Equation 2], which is a modified version of [Equation 1], is useful. 【0055】 【number】 【0056】 M remains unchanged, but H changes from 10m to 30m. 4 It becomes (10 / 30) times. (10 / 30) 0.25 The calculation = 0.76 means that R becomes 0.76 times the original value (2m). The calculation 2 × 0.76 = 1.5 means that R becomes 1.5m. In other words, M is 300m 3 Assuming the value remains per minute, if H is 30m, then R is 1.5m. 【0057】 Thus, using [Equation 1], the unknown can be calculated by assigning values ​​to one of H, M, and R, and leaving the other two as unknowns. Therefore, [Equation 1] is extremely useful in determining the shape of the water purification device 10 according to the present invention. 【0058】 [Examples of modifications to water purification systems] Next, an example of modifying the water purification device 10 will be explained based on Figure 8. The modified water purification device 10, like the water purification device 10 shown in Figure 1, consists of a plurality of floats 13, a bridge 14 spanning the floats 13, a motor with a reduction gear 16 mounted in the center of the bridge 14 with the motor shaft 15 extending downward, a rotating shaft 12 connected to the motor shaft 15 and extending downward, and a blade 30 fixed to this rotating shaft 12. 【0059】 The blade 30 consists of an upper blade 51 positioned directly below the water surface 11 and a lower blade 52 positioned below the upper blade 51. The lower blade 52 is in close contact with the upper blade 51 and connected by bolts 53 (or welded, rivet). 【0060】 The upper vane 51 consists of an upper flange 36, a lower flange 37, and a web 39, forming a channel that opens in the direction of travel, with a radius of R3 and a height dimension of H3. The radius R3 is large, and the height dimension H3 is small. 【0061】 The lower vane 52 consists of an upper flange 36, a lower flange 38, and a web 39, forming a channel that opens in the direction of travel, with a radius of R4 and a height dimension of H4. The radius R4 is small, and the height dimension H4 is large. 【0062】 In other words, the radius R4 of the lower blade 52 is set to be smaller than the radius R3 of the upper blade 51. As a result, the lower blades 52 with a relatively small radius generate an upward flow 43, and the upper blades 51 with a relatively large radius generate a sideways flow 44. This configuration and operation result in a cylindrical flow 48 as shown in Figure 7(b). 【0063】 The water purification device 10 shown in Figure 8 has the advantage that the blades 30 are composed of an upper blade 51, a lower blade 52, and a bolt 53, so the upper blade 51 and the lower blade 52 can be manufactured individually, resulting in improved material yield. In contrast, in the water purification device 10 shown in Figure 1, the material yield is poor because the web 39 is L-shaped as shown in Figure 5(a). On the other hand, there is an advantage in that the upward flow 43 shown in Figure 5(b) is maintained more effectively because there is no flange in the middle of the web 39 in the height direction. 【0064】 Therefore, it is optional whether to adopt the water purification device 10 shown in Figure 1 or the water purification device 10 shown in Figure 8. 【0065】 [Further examples of modifications to water purification systems] As shown in Figure 9(a), the blade 30 consists of an upper flange 36 and a web 39 that extends downward from the upper flange 36, and is an angle that opens forward in the direction of travel. The blade 30 consists of a first blade portion 41 extending horizontally from the rotation axis 12 and a second blade portion 42 extending horizontally further from the tip of the first blade portion 41. As shown in Figures 9(b) and (c), when the length along the rotation axis 12 is referred to as the height dimension, the height dimension H1 of the first blade 41 is set to be larger than the height dimension H2 of the second blade 42. 【0066】 The upper flange 36 prevents water from escaping upwards. Although the water-grabbing force is weaker than the structures shown in Figures 5(a) to (c), the absence of the lower flange simplifies the structure of the blade 30 and allows for a reduction in the weight of the blade 30. 【0067】 [Further examples of modifications to water purification systems] As shown in Figure 10(a), the blade 30 consists only of the web 39. The blade 30 consists of a first blade portion 41 extending horizontally from the rotation axis 12 and a second blade portion 42 extending horizontally further from the tip of the first blade portion 41. As shown in Figures 10(b) and (c), when the length along the rotation axis 12 is referred to as the height dimension, the height dimension H1 of the first blade 41 is set to be larger than the height dimension H2 of the second blade 42. 【0068】 Because the upper and lower flanges are missing, water escapes vertically, and although the water-grabbing force is even weaker than in the structures shown in Figures 5(a) to (c), the structure of the blade 30 becomes very simple, and the blade 30 can be made significantly lighter. 【0069】 Furthermore, the configuration (structure) of the water purification device 10 according to the present invention is not limited to the examples, and may be modified as appropriate insofar as it achieves the function and effects of the present invention. 【0070】 Furthermore, the water purification device 10 according to the present invention generates an upward flow, such as water welling up from a pond. Therefore, "water purification device" can be read as "upwelling flow generating device." [Industrial applicability] 【0071】 This invention is suitable for water purification devices used to clean ponds, swamps, lakes, estuaries, inlets, and the like. [Explanation of Symbols] 【0072】 10...Water purification device, 11...Water surface, 12...Rotating shaft, 30...Blade, 36...Upper flange, 37, 38...Lower flange, 39...Web, 41...First blade section, 42...Second blade section, 43...Upward flow, 44...Sideways flow, 47...Fan-shaped space, 48...Cylindrical flow, 51...Upper blade, 52...Lower blade, H1...Height dimension of the first blade section, H2...Height dimension of the second blade section, R3...Radius of the upper blade, R4...Radius of the lower blade, Ha, Hb...Height length of the cylindrical flow.

Claims

[Claim 1] A water purification device that rotates blades extending radially along the water surface from a rotating shaft positioned vertically on the water surface, without splashing the water, thereby creating a stream of water radiating from the center of rotation of the blades on the water surface and purifying the water. The vane consists of an upper flange, a lower flange, and a web connecting them, forming a channel that opens forward in the direction of travel, with the upper flange positioned on the water surface and the lower flange positioned in the water, and the upper flange and the lower flange exert an action of gripping the water on the water surface. The blade consists of a first blade portion extending horizontally from the axis of rotation and a second blade portion extending horizontally further from the tip of the first blade portion. A water purification device characterized in that, when the length along the rotation axis is referred to as the height dimension, the height dimension of the first blade is set to be greater than the height dimension of the second blade. [Claim 2] A water purification device that rotates upper blades extending radially along the water surface from a rotating shaft positioned vertically on the water surface, without splashing the water, thereby creating a stream of water flowing radially from the center of rotation of the upper blades on the water surface and purifying the water. The upper vane consists of an upper flange, a lower flange, and a web connecting them, forming a channel that opens forward in the direction of travel, with the upper flange positioned on the water surface and the lower flange positioned in the water, and the upper flange and the lower flange exert an action of gripping the water on the water surface. Below the aforementioned upper feather, there is further a lower feather, A water purification device characterized in that the radius of the lower blade is set to be smaller than the radius of the upper blade. [Claim 3] A water purification device that rotates blades extending radially along the water surface from a rotating shaft positioned vertically on the water surface, without splashing the water, thereby creating a stream of water radiating from the center of rotation of the blades on the water surface and purifying the water. The aforementioned vane consists of an upper flange and a web extending downward from this upper flange, and is an angle that opens forward in the direction of travel. The blade consists of a first blade portion extending horizontally from the axis of rotation and a second blade portion extending horizontally further from the tip of the first blade portion. A water purification device characterized in that, when the length along the rotation axis is referred to as the height dimension, the height dimension of the first blade is set to be greater than the height dimension of the second blade. [Claim 4] A water purification device that rotates blades extending radially along the water surface from a rotating shaft positioned vertically on the water surface, without splashing the water, thereby creating a stream of water radiating from the center of rotation of the blades on the water surface and purifying the water. The blade consists of a first blade portion extending horizontally from the axis of rotation and a second blade portion extending horizontally further from the tip of the first blade portion. A water purification device characterized in that, when the length along the rotation axis is referred to as the height dimension, the height dimension of the first blade is set to be greater than the height dimension of the second blade.

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