Foreign matter removing device

Abstract

A foreign matter removing device (1) removes foreign matter contained in fluid in a pipe using a rotational flow generated in a trapping portion (2), in which the fluid is made to flow into the trapping portion (2) and is separated into an inside fluid flowing on the inside of a separation portion (5) and an outside fluid flowing on the outside of the separation portion (5). First foreign matter heavier than the fluid in specific gravity contained in the outside fluid is caught in a gap between the inside wall of the trapping portion (2) and the separation portion (5), and second foreign matter lighter than the fluid in specific gravity contained in the inside fluid is promoted to separate by a gas-liquid separation portion (11) and is discharged to the outside from a foreign matter discharge member (8) via a foreign matter discharge member connecting portion (9) provided at the top of the trapping portion (2) vertically above the central portion.

Description

Technical Field

[0001] This application relates to a foreign matter removal device. Background Technology

[0002] It is known that a foreign matter removal device utilizes swirling flow and gravity settling to remove foreign matter contained in fluids within piping (see, for example, Patent Document 1). This foreign matter removal device can remove foreign matter such as rust, insoluble salts, and corrosion products that may be present in fluids such as water flowing within piping, thus helping to suppress damage within the piping.

[0003] Foreign matter removal devices are used, for example, in heat pump-type hot water heating systems with circulating water loops that use iron radiators and iron piping. Iron radiators and iron piping in the circulating water loop may generate foreign matter such as rust in the fluid within the loop. Therefore, conventional foreign matter removal devices are used to remove foreign matter such as rust that is heavier than the fluid.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2007-127026 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] However, in fluid flow circuits, in addition to foreign objects such as rust that are heavier than the fluid, foreign objects such as air that are lighter than the fluid may also be generated. For example, in a heat pump-type hot water heating system as described above, due to the temperature rise dependent on the operation of the hot water heating system, air dissolved in the fluid in the circuit may be generated as bubbles. Since the generated bubbles may also affect the pump, there is a need for a foreign object removal device that can more effectively remove foreign objects such as bubbles that are lighter than the fluid.

[0009] This application was made in view of the above circumstances, and its purpose is to provide a foreign matter removal device that can remove foreign matter such as rust that has a higher specific gravity than the fluid, and further improve the removal capacity of foreign matter such as bubbles that has a lower specific gravity than the fluid.

[0010] Methods for solving problems

[0011] The foreign matter removal device disclosed in this application uses a swirling flow within a cylindrical collecting section to remove foreign matter contained in fluid within a piping. The device is characterized by comprising:

[0012] The inflow section allows fluid to flow into the collection section;

[0013] The separation section, which is disposed at the bottom of the collection section, has a cylindrical structure and separates the fluid flowing in from the inflow section into an inner fluid of the swirling flow flowing inside the cylindrical structure and an outer fluid of the swirling flow flowing outside the cylindrical structure.

[0014] The first foreign object capturing part is the gap between the inner wall of the capturing part and the separation part, which captures foreign objects with a higher specific gravity than the fluid.

[0015] An outlet section, wherein the inner fluid, from which foreign matter has been removed by the separation section, flows out from the collection section;

[0016] The foreign matter discharge component connection part is arranged facing the outlet at the center of the collection part, which is vertically above the outlet and higher than the inflow part. The foreign matter discharge component connection part is a space that opens in a way that removes foreign matter with a smaller specific gravity than the fluid.

[0017] The second foreign object discharge component is connected to the foreign object discharge component connection part to discharge foreign objects with low specific gravity;

[0018] A rectifier plate, which vertically divides the opening of the foreign object discharge component connection to promote the buoyancy of low-density foreign objects; and

[0019] The gas-liquid separation section is located in the center of the collection section and below the inflow section, which suppresses the swirling flow towards the outflow section.

[0020] The effects of the invention

[0021] According to the foreign matter removal device disclosed in this application, it is possible to remove foreign matter such as rust that has a higher specific gravity than fluid, and further improve the removal capacity of foreign matter such as bubbles that have a lower specific gravity than fluid. Attached Figure Description

[0022] Figure 1 This is an explanatory diagram schematically showing the foreign matter removal device of Embodiment 1.

[0023] Figure 2 This indicates the view from the AA side. Figure 1 A diagram showing the configuration of each structure.

[0024] Figure 3 This is a diagram showing the shape of the rectifier plate of the foreign matter removal device in Embodiment 1.

[0025] Figure 4 This is a diagram illustrating the shape of the gas-liquid separation section of the foreign matter removal device in Embodiment 1.

[0026] Figure 5This diagram illustrates other installation states of the gas-liquid separation section of the foreign matter removal device according to Embodiment 1. Detailed Implementation

[0027] Hereinafter, with reference to the accompanying drawings, embodiments of the foreign matter removal device disclosed in this application will be described in detail. It should be noted that the embodiments shown below are examples, and this application is not limited to these embodiments. It should also be noted that, unless otherwise specified, the vertical direction refers to the up-and-down direction on the paper, and the horizontal direction refers to the left-and-right direction on the paper.

[0028] Implementation method 1.

[0029] Figure 1 This is an explanatory diagram schematically showing the foreign matter removal device 1 of Embodiment 1. Figure 2 Viewed from the AA side Figure 1 The diagram shows a foreign matter removal device 1 installed in a flow circuit of fluids such as water. The foreign matter removal device 1 is a device that removes foreign matter contained in the incoming fluid and allows the fluid to flow out. It includes a collection section 2, an inflow section 3, an outflow section 4, a separation section 5, a first foreign matter capture section 6, a first foreign matter discharge component 7, a second foreign matter discharge component 8, a second foreign matter discharge component connection section 9, a rectifier plate 10, a gas-liquid separation section 11, and a support column 12. Figure 1 as well as Figure 2 In the diagram, arrows indicate the direction of fluid movement within the foreign matter removal device 1. It should be noted that in the diagram, dashed lines represent the inner wall or parts that are not visible.

[0030] The collecting section 2 is a hollow cylindrical structure. When a foreign object removal device 1 is installed in the fluid flow circuit, such as... Figure 1 As illustrated, the collecting section 2 is configured to extend in a vertical direction. The collecting section 2 can be made of metals such as stainless steel, brass, copper, aluminum, or steel. Alternatively, it can be made of resins such as polytetrafluoroethylene (Teflon resin), polyvinyl chloride, polyethylene, polystyrene, polypropylene, polysulfone, isoprene rubber, butadiene rubber, styrene-butadiene rubber, aromatic polyamide (nylon 6 or nylon 6-6, etc.), ABS (acrylonitrile-butadiene-styrene), acrylic acid, or carbon fiber reinforced plastic.

[0031] The inlet section 3 forms a flow path for allowing fluid flowing in the circuit to flow into the collection section 2. For example... Figure 1 As illustrated, one end of the inflow section 3 is connected to the upper part of the collection section 2, and the other end of the inflow section 3 is connected to the circuit via a pipe, with fluid entering from the circuit side in the direction of arrow B.

[0032] The outlet 4 forms a flow path for the fluid flowing within the collection section 2 to flow out of the collection section 2 into a loop. For example... Figure 1As illustrated, one end of the outlet section 4 is connected to the collection section 2, and the other end of the outlet section 4 is connected to the circuit via a pipe. The fluid inside the swirling flow that flows inside the cylindrical structure of the separation section 5 (described later) flows out through the outlet section 4 to the circuit outside the collection section 2.

[0033] like Figure 2 As illustrated, the inlet section 3 is configured such that the fluid flowing within it creates a swirling flow within the collection section 2. This structure prevents the fluid flowing into the foreign matter removal device 1 from flowing directly out of the outlet section 4 in a straight line. In other words, the fluid flowing from the inlet section 3 into the collection section 2 becomes... Figure 2 The outer periphery of the trapping section 2, which has a circular cross-section in the horizontal direction, is swirled by eddies within the trapping section 2 and descends. This descending swirling flow then flows outward from the outlet section 4.

[0034] The separation section 5 is a separation component used to separate the fluid flowing in from the inflow section 3 into an outer peripheral side and a central side within the collection section 2. The separation section 5 is a hollow cylindrical structure disposed at a predetermined position on the inner side separated from the outer periphery within the collection section 2; in this embodiment, it is a cylindrical component. Therefore, as... Figure 2 As shown, the inner diameter of the separating section 5 is smaller than the inner diameter of the collecting section 2 where the separating section 5 is located. This creates a gap between the inner wall of the collecting section 2 and the separating section 5 (hereinafter referred to as the first foreign object capturing section 6). With this structure, the fluid flowing into the foreign object removal device 1 is separated within the collecting section 2 into an inner fluid of a swirling flow flowing inside the separating section 5 and an outer fluid of a swirling flow flowing outside the separating section 5.

[0035] like Figure 1 As illustrated, the separating section 5 is positioned below the collecting section 2. For example, the separating section 5 is positioned at the bottom of the collecting section 2, vertically below the inflow section 3. Similarly, the outflow section 4 is positioned vertically below the inflow section 3.

[0036] Furthermore, the separation section 5 is positioned at the same level in the vertical direction as the connection portion of the collection section 2 that connects to the outflow section 4. In this embodiment, the outflow section 4 is formed as a cylindrical structure that extends through the separation section 5 and the collection section 2.

[0037] With this structure, foreign objects with a specific gravity greater than the fluid, such as rust, contained in the fluid (hereinafter referred to as the first foreign object) are concentrated in the first foreign object capturing part 6, so that the inner fluid after the first foreign object has been removed flows out from the outflow part 4.

[0038] As described above, in the foreign object removal device 1, the fluid flows in a swirling, vortex-like manner within the collection section 2. Due to the rotation of the vortex, centrifugal force is applied, pushing the fluid outward. That is, the outer side of the fluid within the collection section 2 becomes high pressure, while the central side becomes low pressure. Consequently, foreign objects with a specific gravity less than the fluid (hereinafter referred to as second foreign objects), such as bubbles, concentrate in the horizontal direction at or near the center of the collection section 2 (hereinafter referred to as the central section) due to this pressure difference, and float due to the difference in specific gravity with the fluid.

[0039] On the other hand, due to this pressure difference, the first foreign object moves towards the outer periphery of the collection section 2 and settles at the bottom of the collection section 2 due to gravity. In other words, the first foreign object is concentrated outside the separation section 5 located within the collection section 2. Therefore, the fluid flowing out from the outlet section 4 not only properly removes the first foreign object but also properly removes the second foreign object.

[0040] The first foreign object capturing unit 6 captures the first foreign object that has a high specific gravity and settles by gravity. The first foreign object capturing unit 6 is provided with a first foreign object discharge member 7 that extends vertically downward from the bottom of the capturing unit 2.

[0041] The first foreign object discharge member 7 discharges the first foreign object captured by the first foreign object capturing unit 6. The first foreign object discharge member 7 is, for example, a valve, which, by being set to the open state, discharges the first foreign object captured by the first foreign object capturing unit 6 to the outside. By providing the first foreign object discharge member 7, even when the first foreign object capturing unit 6 captures the first foreign object, the amount of the first foreign object captured by the first foreign object capturing unit 6 can be reduced by discharging it to the outside, and the first foreign object can continue to be effectively captured even if the service life of the foreign object removal device 1 is extended.

[0042] The second foreign object discharge member 8 discharges the second foreign object concentrated in the central part of the collection section 2. The second foreign object discharge member 8 is, for example, an air valve, which, by being set to the open state, discharges the second foreign object that is concentrated in the central part of the collection section 2 and floats to the outside.

[0043] The second foreign object discharge member connecting part 9 connects the second foreign object discharge member 8 to the collection part 2. Specifically, as shown in the figure... Figure 1 As shown, the second foreign object discharge member connection 9 is a space in the center of the collecting section 2, which is vertically above the outflow section 4 and higher than the inflow section 3, that opens upward from the top of the inner wall. With this structure, the second foreign object, which is concentrated in the center of the collecting section 2 and floats up, flows into the second foreign object discharge member connection 9 and floats up to the second foreign object discharge member 8.

[0044] The rectifier plate 10 is disposed at the connecting part 9 of the second foreign object discharge component, causing the second foreign object flowing into the connecting part 9 of the second foreign object discharge component to float up. For example... Figure 3 As shown in (a) to (d), the rectifier plate 10 is shaped to divide the opening of the second foreign object discharge member connection portion 9, which can reduce the swirling flow within the second foreign object discharge member connection portion 9 and cause the second foreign object flowing into the second foreign object discharge member connection portion 9 to float towards the second foreign object discharge member 8. Furthermore, the second foreign object discharge member connection portion 9 and the rectifier plate 10 can suppress malfunctions of the second foreign object discharge member 8 caused by the descending swirling flow generated in the center of the collection portion 2. For example, it can reduce the possibility of leakage caused by the float in the vent valve within the second foreign object discharge member 8 sinking due to the descending swirling flow.

[0045] The gas-liquid separator 11 is a component used to suppress the downward swirling flow generated in the center of the collection section 2. The gas-liquid separator 11 is disposed inside the collection section 2 and below the inflow section 3, supported by a rod-shaped support column 12, which is fixed to the bottom of the collection section 2. Preferably, the gas-liquid separator 11 is disposed in the downward direction of the second foreign matter concentrated in the center of the collection section 2, within the separation section 5 on the central axis C connecting the centers of the two bottom surfaces of the cylindrical collection section 2. It should be noted that the outflow section 4 and the second foreign matter discharge member connection section 9 are also disposed on the same central axis C, as shown below. Figure 2 The arrangement shown is on concentric circles.

[0046] like Figure 2 As shown, the gas-liquid separation section 11 is a circular plate-shaped component, but it can also be as shown in the diagram. Figure 4 As shown in (a) and (b), the shape of the horizontal cross-section (perpendicular to the central axis C) is a circular or polygonal plate-like component. Furthermore, the area of ​​the horizontal cross-section can be smaller than that of the outflow section 4. When the area is smaller than that of the outflow section 4, the effect of suppressing the downward swirling flow is reduced, but the pressure loss of the foreign matter removal device 1 can be decreased. For example... Figure 1 As shown, the plate-shaped component of the gas-liquid separation section 11 extends in a direction perpendicular to the outflow direction from the outflow section 4.

[0047] The gas-liquid separation section 11 configured in this way prevents the second foreign object from flowing into the collection section 2 from the inflow section 3 and concentrating in the central part of the collection section 2 from flowing towards the outflow section 4 due to the descending swirling flow, leaving the second foreign object in the collection section 2, and promoting the second foreign object to float to the second foreign object discharge member 8.

[0048] It should be noted that, in Figure 1 In the middle, the gas-liquid separation section 11 is supported by a support column 12 fixed to the bottom of the collection section 2, but it can also be like... Figure 5As shown, it is supported by a support column 12 fixed to the inner side of the collecting section 2. Alternatively, it can be supported by a support column from the side of the separating section 5. In addition, the gas-liquid separation section 11 is disposed inside the separating section 5 compared to being disposed outside the separating section 5, which increases the suppression effect on the downward swirling flow towards the outflow section 4.

[0049] As described above, the foreign matter removal apparatus according to this embodiment can remove foreign matter such as rust, which is a first foreign matter, and has a higher specific gravity than the fluid, and can further improve the removal capacity of foreign matter such as bubbles, which is a second foreign matter, and has a lower specific gravity than the fluid.

[0050] This application describes exemplary embodiments, but the various features, methods and functions described in the embodiments are not limited to the application of specific embodiments, and can be applied to the embodiments alone or in various combinations.

[0051] Therefore, numerous variations not illustrated can be conceived within the scope of the technology disclosed in this application. These include variations, additions, or omissions of at least one constituent element.

[0052] Explanation of reference numerals in the attached figures

[0053] 1: Foreign object removal device; 2: Collection section; 3: Inflow section; 4: Outflow section; 5: Separation section; 6: First foreign object capture section; 7: First foreign object discharge component; 8: Second foreign object discharge component; 9: Second foreign object discharge component connection section; 10: Rectifier plate; 11: Gas-liquid separation section; 12: Support column.

Claims

1. A foreign matter removal device, characterized in that it uses a swirling flow within a cylindrical collecting section to remove foreign matter contained in a fluid within a piping, wherein... The foreign matter removal device includes: An inflow section that allows the fluid to flow into the collection section; A separation section, disposed at the bottom of the collection section, has a cylindrical structure, which separates the fluid flowing in from the inflow section into an inner fluid of the swirling flow flowing inside the cylindrical structure and an outer fluid of the swirling flow flowing outside the cylindrical structure. The first foreign object capturing part is the gap between the inner wall of the capturing part and the separation part, which captures foreign objects with a specific gravity greater than that of the fluid. An outlet section, wherein the inner fluid, from which foreign matter has been removed by the separation section, flows out from the collection section; The foreign matter discharge component connection part is arranged facing the central part of the collection part, which is vertically above the outflow part and higher than the inflow part. The foreign matter discharge component connection part is a space that opens in a way that removes foreign matter with a smaller specific gravity than the fluid. The second foreign object discharge component is connected to the foreign object discharge component connection part to discharge the low specific gravity foreign object; A rectifier plate, which vertically divides the opening of the foreign object discharge component connection to promote the buoyancy of the low-density foreign object; as well as A gas-liquid separation section is disposed within the separation section on a central axis connecting the centers of the two bottom surfaces of the cylindrical collection section, and is disposed in the center of the collection section and at a position lower than the inflow section, thereby suppressing the flow of the swirling flow toward the outflow section.

2. The foreign matter removal device as described in claim 1, characterized in that, The foreign object removal device includes a first foreign object discharge component, which discharges the high-density foreign object captured by the first foreign object capture unit.

3. The foreign matter removal device as described in claim 1, characterized in that, The outflow section is located below the inflow section.

4. The foreign matter removal device according to any one of claims 1 to 3, characterized in that, The gas-liquid separation section is a plate-shaped component that extends in a direction perpendicular to the flow direction of the swirling flow towards the outlet section.

5. The foreign matter removal device according to any one of claims 1 to 3, characterized in that, The gas-liquid separation section is supported by a support column extending from the bottom of the collection section.

6. The foreign matter removal device according to any one of claims 1 to 3, characterized in that, The gas-liquid separation section is supported by a support column extending from the inner side of the collection section.

7. The foreign matter removal device as described in claim 1 or 2, characterized in that, The inner side of the separating section and the outer side of the outflow section are connected in the horizontal direction to form the bottom.

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