Discharge structure

Abstract

To provide a discharge structure capable of discharging fluid efficiently.SOLUTION: A discharge structure comprises: a first flow path that allows fluid to flow upward; a second flow path that discharges the fluid having flowed through the first flow path to a lateral side, and has a downward gradient toward the lateral side; and a throttle part that is provided at a boundary between the first flow path and the second flow path, and has a smaller cross-sectional area than the first flow path and the second flow path.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a discharge structure. [Background technology]

[0002] Patent Document 1 discloses a configuration in which treated water is extracted from a water tank using an air lift pump. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-40510 Summary of the Invention [Problem to be solved by the invention]

[0004] Here, a discharge structure that can efficiently discharge the fluid that has been raised using, for example, an air lift pump is desired.

[0005] An object of the present disclosure is to provide a discharge structure that can efficiently discharge fluid. [Means for solving the problem]

[0006] The discharge structure of the present disclosure includes a first flow path that causes a fluid to flow upward, a second flow path that discharges the fluid that has flowed through the first flow path toward the side and has a downward slope toward the side, and a throttling section that is provided at the boundary between the first flow path and the second flow path and has a smaller cross-sectional area than the first flow path and the second flow path. [Effects of the Invention]

[0007] The present disclosure can provide a discharge structure that can efficiently discharge fluid. [Brief explanation of the drawings]

[0008] [Figure 1]1 is a side cross-sectional view showing a discharge structure according to a first embodiment. [Figure 2] FIG. 10 is a side cross-sectional view showing a discharge structure according to a second embodiment. [Figure 3] FIG. 3 is an enlarged view of the discharge structure shown in FIG. 2. [Figure 4] FIG. 10 is a perspective view of the discharge structure according to the second embodiment, as viewed from above. [Figure 5] FIG. 10 is a perspective view of the discharge structure according to the second embodiment, as viewed from below. DETAILED DESCRIPTION OF THE INVENTION

[0009] An example of an embodiment of the present disclosure will be described below with reference to the drawings. The configuration of the embodiment is not limited to the configuration shown in the drawings. Furthermore, components indicated by the same reference numerals in the drawings are the same or similar components. The drawings used in the following description are all schematic, and the dimensional relationships, ratios, etc. of the elements shown in the drawings do not necessarily match those in reality. Furthermore, the dimensional relationships, ratios, etc. of the elements between multiple drawings do not necessarily match.

[0010] Note that the arrow UP shown in the drawings indicates the upper side (vertical upward) of the configuration according to the embodiment, and the arrow DO indicates the lower side (vertical downward) of the configuration according to the embodiment. The arrow LH shown in the drawings indicates the left side of the configuration according to the embodiment, and the arrow RH indicates the right side of the configuration according to the embodiment. These directions are defined for the sake of convenience, and the configuration of the present disclosure is not limited to these directions.

[0011] <Discharge structure 10 according to the first embodiment> The discharge structure 10 according to this embodiment will be described below. Fig. 1 is a side cross-sectional view showing the discharge structure 10 according to this embodiment.

[0012] The discharge structure 10 is a structure that discharges water (an example of a fluid) as a discharge target. Specifically, the discharge structure 10 is a structure that discharges water that has been raised by the air lift pump 100. In other words, the discharge structure 10 can be said to be a structure that draws water out of a pipe 102 (described below) of the air lift pump 100.

[0013] 1, the discharge structure 10 includes a connection portion 50, a first pipe 30, a first flow path 31, a second pipe 20, a second flow path 22, a throttle portion 40, and a receiving portion 60. The air lift pump 100 and each portion of the discharge structure 10 will be described below.

[0014] <Air Lift Pump 100> 1, the air lift pump 100 has a pipe 102 through which water can rise. The pipe 102 is open on both sides in the axial direction (i.e., the vertical direction), and, for example, its lower part is placed underwater.

[0015] In the air lift pump 100, air is sent into the lower part of the pipe 102 through an air supply pipe (not shown) connected to the lower part of the pipe 102, for example, to create a difference in specific gravity between the water inside and outside the pipe 102. This causes water to flow in from the lower end of the pipe 102, pushing up the water inside the pipe 102 and causing the water to rise inside the pipe 102. Therefore, in the air lift pump 100, the water containing air rises.

[0016] The device for sending water to the inlet 32 ​​of the discharge structure 10, which will be described later, is not limited to the air lift pump 100, but may be a pump that sends water using another driving force, and various other devices can be used.

[0017] <Connection part 50> As shown in Fig. 1, the connection part 50 is a structural part to which the pipe 102 of the air lift pump 100 is connected. In this embodiment, the connection part 50 is configured as a tubular body formed in a cylindrical shape (for example, a substantially cylindrical shape). The connection part 50 has a connection port 52 that opens downward. The upper end of the pipe 102 of the air lift pump 100 is inserted into the connection part 50 through the connection port 52, thereby connecting to the pipe 102.

[0018] <First pipe 30 and first flow path 31> 1 is configured as a tube formed in a tubular shape (for example, a substantially cylindrical shape). The first tube 30 extends upward from the upper end of the connection part 50.

[0019] The first flow path 31 is a flow path formed inside the first pipe 30. This first flow path 31 has an inlet 32 ​​at its upstream end (specifically, its lower end) through which the fluid raised by the air lift pump 100 flows in. The inlet 32 ​​faces an opening 104 of the pipe 102 connected to the connection part 50. In the first flow path 31, water that flows in from the opening 104 of the pipe 102 through the inlet 32 ​​flows upward.

[0020] In addition, in a side cross-sectional view, the first flow path 31 has a straight side wall 33 that extends upward on the discharge side (the right side in FIG. 1) of the second flow path 22. In a side cross-sectional view, the first flow path 31 has a side wall 34 that is on the opposite side to the discharge side of the second flow path 22 (the left side in FIG. 1) that curves toward the discharge side of the second flow path 22 (the right side in FIG. 1).

[0021] As a result, the cross-sectional area of ​​the first flow path 31 gradually decreases toward the throttle section 40 (i.e., the downstream side (upward side)). Note that the cross-sectional area of ​​each portion of the first flow path 31 from the inlet 32 ​​to the throttle section 40 is smaller than the cross-sectional area of ​​the connection section 50.

[0022] <Second pipe 20 and second flow path 22> 1 is configured as a tube formed in a cylindrical shape (for example, a substantially cylindrical shape). The second tube 20 extends from the upper end of the first tube 30 toward the side (the right side in FIG. 1).

[0023] The second flow path 22 is a flow path formed inside the second pipe 20. The second flow path 22 has an outlet 24 at its downstream end (specifically, the right end in FIG. 1 ). The outlet 24 opens to the side (to the right side in FIG. 1 ). In the second flow path 22, the water that has flowed through the first flow path 31 flows toward the outlet 24 and is discharged from the outlet 24.

[0024] Additionally, the second flow path 22 has a downward gradient toward the side (to the right in FIG. 1). In the second flow path 22, in a side cross-sectional view (see FIG. 1), the top wall 25 curves toward the side (to the right in FIG. 1). In the second flow path 22, the bottom wall 26 is inclined so as to have a downward gradient toward the side (to the right in FIG. 1). As a result, the cross-sectional area of ​​the second flow path 22 gradually increases from the throttle section 40 toward the downstream side (to the right).

[0025] <Throat section 40> The throttle section 40 is provided at the boundary between the first flow path 31 and the second flow path 22. The throttle section 40 has a smaller cross-sectional area than the first flow path 31 and the second flow path 22. Therefore, in the flow path including the first flow path 31, the throttle section 40, and the second flow path 22, the flow path cross-sectional area is smallest at the throttle section 40.

[0026] The ratio of the cross-sectional area of ​​the throttle section 40 to the cross-sectional area of ​​the inlet 32 ​​of the first flow path 31 is set, for example, in the range of 50% to 70%. Here, because air is more compressible than water, when the amount of air contained in the water is large, the water flowing through the throttle section 40 is less likely to encounter resistance, even if the throttle section 40 is made smaller, compared to when the amount of air contained in the water is small. Therefore, the greater the amount of air contained in the water, the smaller the throttle section 40 can be made. For example, when the air contained in the water is 50% or more, the above ratio of the cross-sectional area of ​​the throttle section 40 can be set, for example, to 50% or less (e.g., 30% to 50%).

[0027] <Receiving part 60> The receiving portion 60 is a structural portion that receives the water discharged from the discharge port 24 of the second flow path 22. Specifically, the receiving portion 60 has a container 63 having a peripheral wall 62 and a bottom wall 64, and a discharge pipe 66.

[0028] The bottom wall 64 is formed in a substantially circular plate shape in a plan view. The lower end of the connection part 50 is connected to the center of the bottom wall 64.

[0029] The peripheral wall 62 surrounds the first pipe 30 (first flow path 31), the second pipe 20 (second flow path 22), the throttle portion 40, and the connection portion 50, and is formed in a cylindrical shape with its axial direction extending vertically. The lower end of the peripheral wall 62 is connected to the outer periphery of the bottom wall 64. The upper end of the peripheral wall 62 protrudes upward beyond the upper end of the second pipe 20.

[0030] The discharge pipe 66 is provided in the bottom wall 64 and communicates with the inside of the container 63. The discharge pipe 66 is disposed on the discharge port 24 side of the container 63 (the right side in FIG. 1).

[0031] In the receiving section 60, the water discharged from the second flow path 22 through the outlet 24 is temporarily stored in a container 63. Then, the water temporarily stored in the container 63 is discharged to the outside of the container 63 through a discharge pipe 66.

[0032] <Supplement to Emission Structure 10> In the discharge structure 10, for example, the connection portion 50, the first pipe 30, the second pipe 20, and the receiving portion 60 are integrally formed. The discharge structure 10 is made of a resin material, a metal material, or other materials.

[0033] The drainage structure 10 can be configured as, for example, a part of a water circulation system that circulates water. An example of a water circulation system is a system that circulates and purifies wastewater used in a home so that the water can be reused within the home.

[0034] <Function of the exhaust structure 10> In the discharge structure 10, the throttle section 40 provided at the boundary between the first flow path 31 and the second flow path 22 has a cross-sectional area smaller than that of the first flow path 31 and the second flow path 22.

[0035] As a result, the water that has been raised by the air lift pump 100 and flowed in from the inlet 32 ​​rises with a small water pressure up to the throttle section 40. Then, the water that has risen to the throttle section 40 flows sideways through the second flow path 22, which has a downward slope, and is discharged from the second flow path 22 into the inside of the container 63 through the outlet 24.

[0036] In this way, the water that is raised by the air lift pump 100 and flows in through the inlet 32 ​​rises up to the constriction section 40 as its flow rate increases through the constriction section 40, and the water that has risen to the constriction section 40 flows sideways due to the downward slope of the second flow path 22, allowing the water to be discharged efficiently.

[0037] Furthermore, in the discharge structure 10, the cross-sectional area of ​​the first flow path 31 decreases toward the throttled portion 40, so that water flows smoothly through the first flow path 31 toward the throttled portion 40. This allows the discharge structure 10 to discharge water efficiently.

[0038] Furthermore, in the discharge structure 10, the cross-sectional area of ​​the second flow path 22 expands from the throttle section 40 toward the downstream side, so that water flows smoothly through the second flow path 22 toward the downstream side from the throttle section 40. This allows the discharge structure 10 to discharge water efficiently.

[0039] As described above, the discharge structure 10 can discharge water efficiently, so that the water that has risen up the pipe 102 can be efficiently extracted by the air lift pump 100, and the water that has risen up the pipe 102 is prevented from returning down the pipe 102.

[0040] <Modification of the discharge structure 10> In the drain structure 10, the fluid to be drained is water, but this is not limited thereto. For example, the fluid of the present disclosure may be a chemical solution or the like, as long as it can be made to flow through a flow path formed by the first flow path 31, the second flow path 22, and the throttle portion 40. The fluid of the present disclosure may also be wastewater containing foreign matter such as solids. Furthermore, the fluid of the present disclosure may also be a beverage such as juice with grains, or other liquids including liquid cosmetics.

[0041] The cross-sectional areas of the first flow path 31, the second flow path 22 and the throttle portion 40 can be set depending on the viscosity of the fluid to be discharged and the presence or absence of foreign matter in the fluid.

[0042] In the discharge structure 10, the cross-sectional area of ​​the first flow path 31 gradually decreases toward the throttle section 40, but this is not limited to this. The cross-sectional area of ​​the first flow path 31 may be constant along the direction of water flow, for example. Alternatively, the cross-sectional area of ​​the first flow path 31 may be decreased in stages, for example. As long as the cross-sectional area of ​​the throttle section 40 is smaller than the cross-sectional area of ​​the first flow path 31, the cross-sectional area of ​​the first flow path 31 is not important.

[0043] In the discharge structure 10, the cross-sectional area of ​​the second flow path 22 gradually increases from the throttle section 40 toward downstream, but this is not limited to this. The cross-sectional area of ​​the second flow path 22 may be constant along the water flow direction, for example. Alternatively, the cross-sectional area of ​​the second flow path 22 may increase in stages, for example. As long as the cross-sectional area of ​​the throttle section 40 is smaller than the cross-sectional area of ​​the second flow path 22, the cross-sectional area of ​​the second flow path 22 is not important.

[0044] Although the discharge structure 10 includes the connecting portion 50, the first pipe 30, the first flow path 31, the second pipe 20, the second flow path 22, the throttle portion 40, and the receiving portion 60, the present disclosure is not limited to this. The discharge structure 10 may have a structure that does not include at least one of the connecting portion 50 and the receiving portion 60, for example, and the discharge structure of the present disclosure may have a structure that includes at least the first flow path, the second flow path, and the throttle portion.

[0045] In the discharge structure 10, the connecting portion 50, the first pipe 30, the second pipe 20, and the receiving portion 60 are integrally formed, but this is not limiting. In the discharge structure of the present disclosure, each portion may be formed separately as appropriate.

[0046] <Discharge structure 200 according to second embodiment> An exhaust structure 200 according to a second embodiment will be described. Figs. 2 and 3 are cross-sectional views showing the exhaust structure 200 according to this embodiment. Fig. 4 is a perspective view of the exhaust structure 200 according to this embodiment, seen from above. Fig. 5 is a perspective view of the exhaust structure 200 according to this embodiment, seen from below. In the following description, components having the same functions as those of the exhaust structure 10 are given the same reference numerals, and descriptions thereof will be omitted as appropriate.

[0047] In the discharge structure 10 (see FIG. 1), the second flow paths 22 discharge water in one lateral direction (to the right in FIG. 1), whereas in the discharge structure 200 (see FIG. 2), the second flow paths 22 are configured to discharge water in multiple lateral directions (directions including the right and left in FIG. 2). In this embodiment, the discharge structure 200 discharges water such that the second flow paths 22 spread in the circumferential direction of the pipe 102 (see FIG. 2) in a plan view (see FIG. 4). Specifically, the second flow paths 22 discharge water within a 360-degree range in the circumferential direction of the pipe 102. Note that the dashed arrows in FIGS. 2 and 4 indicate part of the discharge direction of the second flow paths 22.

[0048] In the discharge structure 200, the first flow path 31, the second flow path 22, and the throttle portion 40 are provided over a 360-degree range along the circumferential direction about the axis CA of the pipe 102. Therefore, the first flow path 31, the second flow path 22, and the throttle portion 40 are each formed as a whole in a substantially cylindrical shape along the circumferential direction about the axis CA.

[0049] Furthermore, as shown in Fig. 3, the discharge structure 200 has a truncated cone portion 80 formed in a truncated cone shape and having a circular hole 81 in the center, and an upper portion 82 arranged above the truncated cone portion 80. As shown in Fig. 4, the upper portion 82 is formed in a circular shape in a plan view. The upper portion 82 has a central portion 84 that protrudes downward. This central portion 84 is supported by a partition wall 86.

[0050] As shown in Fig. 5, a plurality of (e.g., eight) partition walls 86 are arranged along the circumferential direction. Each of the plurality of partition walls 86 connects the inner wall of the circular hole 81 of the truncated cone portion 80 to the central portion 84. As a result, the upper portion 82 is supported by the truncated cone portion 80 via the partition walls 86. The partition walls 86 divide the first flow path 31 into a plurality of (e.g., eight) partition walls in the circumferential direction. Note that in the discharge structure 200, the peripheral wall 62 of the container 63 has a reduced diameter at the upper portion.

[0051] In the discharge structure 200, water that is raised by the air lift pump 100 and flows in through the inlet 32 ​​rises to the throttle section 40 through the first flow path 31. Since the first flow path 31 and the throttle section 40 are formed in a cylindrical shape along the circumferential direction with respect to the axis CA, the water rises in a cylindrical shape.

[0052] The water that has risen to the throttle section 40 is then discharged in multiple lateral directions (directions including the right and left in FIG. 2 ) through the second flow path 22, which has a downward slope, and into the inside of the container 63 through the outlet 24. Specifically, the second flow path 22 discharges the water in a 360-degree range in the circumferential direction of the pipe 102.

[0053] In this way, the discharge structure 200 has the second flow path 22 discharge water in multiple sides (directions including the right and left in Figure 2), specifically, in a 360-degree range around the pipe 102, so that water can be discharged more efficiently than when discharged in one direction.

[0054] <Modification of the discharge structure 200> The discharge structure 200 may also employ the above-described modified examples of the discharge structure 10 as appropriate.

[0055] In addition, in the discharge structure 200, in addition to or instead of setting the cross-sectional areas of the first flow path 31, the second flow path 22, and the throttling section 40, the number of partitions 86 can be set depending on the viscosity of the fluid to be discharged and the presence or absence of foreign matter in the fluid.

[0056] In the discharge structure 200, the upper portion 82 is supported by the truncated cone portion 80 via the partition wall 86, but this is not limited to this. The upper portion 82 may be connected to the peripheral wall 62 of the container 63 and supported by the peripheral wall 62, for example. This configuration makes it possible to have a configuration without the partition wall 86.

[0057] <Additional Notes> (Appendix 1) a first flow path for allowing a fluid to flow upward; a second flow path that discharges the fluid that has flowed through the first flow path toward a side and has a downward slope toward the side; a throttle portion provided at a boundary between the first flow path and the second flow path and having a cross-sectional area smaller than those of the first flow path and the second flow path; A discharge structure comprising: (Appendix 2) The first flow path has a cross-sectional area that decreases toward the throttle portion. The ejection structure described in Appendix 1. (Appendix 3) The second flow path has a cross-sectional area that expands downstream from the throttle portion. 1. An ejection structure as described in appendix 1 or 2. (Appendix 4) The second flow path is The fluid that has flowed through the first flow path is discharged toward the plurality of sides. Attachment 1 - 3 any one of the discharge structure. (Appendix 5) The first flow path is It has an inlet through which the elevated fluid flows, and the fluid that flows in through the inlet flows upward. Attachment 1 - 4 any one of the discharge structure. [Explanation of symbols]

[0058] 10, 200 discharge structure 22 Second flow path 31 First Channel 32 Inlet 40 Constriction section

Claims

1. a first flow path for allowing a fluid to flow upward; a second flow path that discharges the fluid that has flowed through the first flow path toward a side and has a downward slope toward the side; a throttle portion provided at a boundary between the first flow path and the second flow path and having a cross-sectional area smaller than those of the first flow path and the second flow path; Equipped with an upper end of an upper wall forming the second flow path is positioned higher than an upper end of the throttle portion and curved laterally; The second flow path causes the fluid to flow from the throttle portion toward the side. Exhaust structure.

2. The first flow path has a cross-sectional area that decreases toward the throttle portion. The ejection structure of claim 1 .

3. The second flow path has a cross-sectional area that expands downstream from the throttle portion. The ejection structure of claim 1 .

4. The second flow path is Discharging the fluid that has flowed through the first flow path toward the plurality of sides. The ejection structure of claim 1 .

5. The first flow path is having an inlet through which the elevated fluid flows, and causing the fluid that flows in through the inlet to flow upward; The ejection structure of claim 1 .

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